/* roulang page: index */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }
        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
        }
        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
        }
        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 12px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            min-width: 56px;
            text-align: center;
            cursor: pointer;
            border: 1px solid transparent;
        }
        .header-nav .nav-icon-item i {
            font-size: 1.15rem;
            transition: transform var(--transition-fast);
        }
        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            border-color: var(--color-primary-light);
            text-decoration: none;
            transform: translateY(-1px);
        }
        .header-nav .nav-icon-item:hover i {
            transform: scale(1.1);
        }
        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
            border-color: rgba(26, 86, 219, 0.2);
        }
        .header-nav .nav-icon-item.active i {
            color: var(--color-primary);
        }
        .header-search {
            display: flex;
            align-items: center;
            gap: 8px;
            background: var(--color-bg);
            border-radius: var(--radius-full);
            padding: 8px 16px;
            border: 1px solid var(--color-border);
            transition: all var(--transition-fast);
            min-width: 200px;
        }
        .header-search:focus-within {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
            background: var(--color-bg-white);
        }
        .header-search input {
            border: none;
            background: transparent;
            padding: 0;
            flex: 1;
            min-width: 0;
            font-size: 0.9rem;
            color: var(--color-text);
        }
        .header-search input:focus {
            outline: none;
            box-shadow: none;
        }
        .header-search i {
            color: var(--color-text-muted);
            font-size: 0.9rem;
        }
        .mobile-menu-toggle {
            display: none;
            font-size: 1.4rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            background: none;
            border: none;
        }
        .mobile-menu-toggle:hover {
            background: var(--color-bg);
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(170deg, #f0f4ff 0%, #e8f0fe 30%, #f8fafc 70%, #ffffff 100%);
            padding: 60px 0 70px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-text-strong);
            line-height: 1.25;
            letter-spacing: -0.02em;
            margin-bottom: 16px;
        }
        .hero-content h1 .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .hero-content .hero-subtitle {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 24px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
            cursor: pointer;
            border: 2px solid transparent;
            letter-spacing: 0.01em;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border-color: var(--color-primary);
            box-shadow: var(--color-shadow);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
            text-decoration: none;
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border-color: var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary-light);
            border-color: var(--color-primary-dark);
            color: var(--color-primary-dark);
            text-decoration: none;
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--color-secondary);
            color: #1e293b;
            border-color: var(--color-secondary);
            font-weight: 700;
        }
        .btn-accent:hover {
            background: #e8900b;
            border-color: #e8900b;
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
            text-decoration: none;
            color: #1e293b;
        }
        .btn-lg {
            padding: 15px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }
        .hero-whitepaper-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--color-shadow-xl);
            padding: 32px 28px;
            width: 100%;
            max-width: 440px;
            border: 1px solid var(--color-border-light);
            position: relative;
        }
        .hero-whitepaper-card .wp-cover {
            width: 100%;
            aspect-ratio: 16/10;
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 20px;
            background: #f1f5f9;
            position: relative;
        }
        .hero-whitepaper-card .wp-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-whitepaper-card .wp-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--color-secondary);
            color: #1e293b;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 5px 10px;
            border-radius: var(--radius-sm);
            letter-spacing: 0.02em;
        }
        .hero-whitepaper-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }
        .hero-whitepaper-card .wp-toc {
            list-style: none;
            padding: 0;
            margin: 0 0 20px;
            font-size: 0.88rem;
            color: var(--color-text-muted);
        }
        .hero-whitepaper-card .wp-toc li {
            padding: 5px 0;
            border-bottom: 1px dashed var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .hero-whitepaper-card .wp-toc li i {
            color: var(--color-accent);
            font-size: 0.7rem;
        }
        .hero-whitepaper-card .wp-form {
            display: flex;
            gap: 8px;
        }
        .hero-whitepaper-card .wp-form input {
            flex: 1;
            min-width: 0;
            padding: 10px 14px;
            border-radius: var(--radius);
            border: 1px solid var(--color-border);
            font-size: 0.9rem;
        }
        .hero-whitepaper-card .wp-form .btn {
            flex-shrink: 0;
            padding: 10px 18px;
            font-size: 0.9rem;
        }
        .hero-stats-row {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
            margin-top: 8px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }
        .hero-stat .stat-value {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.01em;
        }
        .hero-stat .stat-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        /* Sections */
        section {
            padding: 60px 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 44px;
        }
        .section-header .section-tag {
            display: inline-block;
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 600;
            font-size: 0.82rem;
            padding: 6px 14px;
            border-radius: var(--radius-full);
            margin-bottom: 12px;
            letter-spacing: 0.02em;
        }
        .section-header h2 {
            font-size: 2rem;
            font-weight: 800;
            color: var(--color-text-strong);
            letter-spacing: -0.01em;
            margin-bottom: 10px;
        }
        .section-header p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 620px;
            margin: 0 auto;
            line-height: 1.7;
        }
        .section-header-left {
            text-align: left;
            margin-bottom: 36px;
        }
        .section-header-left h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-text-strong);
            letter-spacing: -0.01em;
            margin-bottom: 8px;
        }
        .section-header-left p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 600px;
            line-height: 1.7;
        }

        /* Pain Points */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .pain-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--color-shadow-sm);
            transition: all var(--transition);
            text-align: center;
        }
        .pain-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
            border-color: #fecaca;
        }
        .pain-card .pain-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-full);
            background: #fef2f2;
            color: #ef4444;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 1.3rem;
        }
        .pain-card h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* Solution */
        .solution-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .solution-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--color-border-light);
            box-shadow: var(--color-shadow);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .solution-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--color-primary);
            border-radius: 0 4px 4px 0;
            opacity: 0;
            transition: opacity var(--transition);
        }
        .solution-card:hover::before {
            opacity: 1;
        }
        .solution-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .solution-card .sol-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 1.2rem;
        }
        .solution-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }
        .solution-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }

        /* Brand intro */
        .brand-intro-block {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .brand-intro-block .brand-text h3 {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: 14px;
        }
        .brand-intro-block .brand-text p {
            font-size: 0.95rem;
            color: var(--color-text-muted);
            line-height: 1.75;
        }
        .brand-intro-block .brand-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #f1f5f9;
        }
        .brand-intro-block .brand-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* Collection */
        .collection-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .collection-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            cursor: pointer;
            text-decoration: none;
            color: inherit;
            display: block;
        }
        .collection-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-4px);
            text-decoration: none;
            color: inherit;
        }
        .collection-card .coll-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #f1f5f9;
        }
        .collection-card .coll-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }
        .collection-card:hover .coll-img img {
            transform: scale(1.04);
        }
        .collection-card .coll-body {
            padding: 18px 20px;
        }
        .collection-card .coll-body h3 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }
        .collection-card .coll-body p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            margin-bottom: 10px;
        }
        .collection-card .coll-body .coll-count {
            font-size: 0.78rem;
            color: var(--color-primary);
            font-weight: 600;
            display: flex;
            align-items: center;
            gap: 4px;
        }

        /* Data metrics */
        .metrics-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .metric-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .metric-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .metric-card .metric-value {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            margin-bottom: 4px;
        }
        .metric-card .metric-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }
        .metric-card .metric-sub {
            font-size: 0.75rem;
            color: var(--color-text-light);
            margin-top: 4px;
        }

        /* Steps */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }
        .step-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .step-card .step-num {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 14px;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-card h3 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }
        .step-card p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.55;
        }

        /* Testimonials */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            position: relative;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
        }
        .testimonial-card .t-quote {
            font-size: 0.92rem;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
            position: relative;
            padding-left: 20px;
            border-left: 3px solid var(--color-primary-light);
        }
        .testimonial-card .t-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-card .t-avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .testimonial-card .t-info .t-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-strong);
        }
        .testimonial-card .t-info .t-role {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* Guarantee */
        .guarantee-strip {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 36px 28px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .guarantee-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }
        .guarantee-item .g-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-full);
            background: var(--color-accent-light);
            color: var(--color-accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
        }
        .guarantee-item h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--color-text-strong);
        }
        .guarantee-item p {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            line-height: 1.4;
        }

        /* Security */
        .security-block {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 36px;
            align-items: center;
        }
        .security-block .sec-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .security-block .sec-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.92rem;
            color: var(--color-text);
            line-height: 1.6;
        }
        .security-block .sec-list li i {
            color: var(--color-accent);
            font-size: 1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }
        .security-block .sec-visual {
            border-radius: var(--radius-lg);
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #f1f5f9;
        }
        .security-block .sec-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        /* News */
        .news-layout {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .news-item {
            display: flex;
            align-items: baseline;
            gap: 16px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
            transition: all var(--transition-fast);
            text-decoration: none;
            color: inherit;
        }
        .news-item:hover {
            background: #fafbfd;
            text-decoration: none;
            color: inherit;
            padding-left: 6px;
            border-radius: 4px;
        }
        .news-item .news-date {
            font-size: 0.8rem;
            color: var(--color-text-light);
            white-space: nowrap;
            flex-shrink: 0;
            font-weight: 500;
        }
        .news-item .news-content {
            flex: 1;
            min-width: 0;
        }
        .news-item .news-content h4 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 4px;
            line-height: 1.4;
        }
        .news-item .news-content p {
            font-size: 0.83rem;
            color: var(--color-text-muted);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-sidebar {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
        }
        .news-sidebar h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--color-primary);
        }
        .news-sidebar .hot-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .news-sidebar .hot-list li a {
            font-size: 0.9rem;
            color: var(--color-text);
            text-decoration: none;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: color var(--transition-fast);
            line-height: 1.4;
        }
        .news-sidebar .hot-list li a:hover {
            color: var(--color-primary);
            text-decoration: none;
        }
        .news-sidebar .hot-list li a .hot-rank {
            width: 24px;
            height: 24px;
            border-radius: var(--radius-sm);
            background: var(--color-primary-light);
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.75rem;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        /* Brand Story */
        .story-block {
            background: linear-gradient(135deg, #1a3c6e 0%, #1a56db 40%, #2563eb 100%);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .story-block::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -40px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .story-block .story-inner {
            position: relative;
            z-index: 1;
            max-width: 700px;
        }
        .story-block h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }
        .story-block p {
            font-size: 0.95rem;
            line-height: 1.8;
            opacity: 0.9;
            margin-bottom: 12px;
        }
        .story-block .btn {
            margin-top: 8px;
        }

        /* CTA */
        .cta-section {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 48px 36px;
            box-shadow: var(--color-shadow-lg);
            border: 1px solid var(--color-border-light);
            text-align: center;
            margin: 40px 0;
        }
        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--color-text-strong);
            margin-bottom: 10px;
        }
        .cta-section p {
            font-size: 1rem;
            color: var(--color-text-muted);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-section .cta-form-row {
            display: flex;
            gap: 10px;
            max-width: 480px;
            margin: 0 auto;
            flex-wrap: wrap;
            justify-content: center;
        }
        .cta-section .cta-form-row input {
            flex: 1;
            min-width: 200px;
            padding: 12px 16px;
            border-radius: var(--radius);
            border: 1px solid var(--color-border);
            font-size: 0.95rem;
        }
        .cta-section .cta-form-row .btn {
            flex-shrink: 0;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--color-shadow-sm);
        }
        .faq-item:hover {
            box-shadow: var(--color-shadow);
        }
        .faq-item .faq-q {
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            color: var(--color-text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            font-family: inherit;
            transition: background var(--transition-fast);
        }
        .faq-item .faq-q:hover {
            background: #fafbfd;
        }
        .faq-item .faq-q i {
            transition: transform var(--transition);
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }
        .faq-item.open .faq-q i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-item .faq-a {
            padding: 0 24px;
            max-height: 0;
            overflow: hidden;
            transition: all var(--transition);
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }
        .faq-item.open .faq-a {
            padding: 0 24px 20px;
            max-height: 300px;
        }

        /* Footer */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 48px 0 28px;
            margin-top: 20px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 36px;
            margin-bottom: 36px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: 0.01em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.88rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.82rem;
            color: #94a3b8;
        }
        .footer-bottom .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom .footer-links a {
            color: #94a3b8;
            text-decoration: none;
            font-size: 0.82rem;
        }
        .footer-bottom .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-brand {
            font-weight: 700;
            font-size: 1.1rem;
            color: #fff;
            margin-bottom: 8px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .pain-grid,
            .solution-grid,
            .collection-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .guarantee-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .brand-intro-block,
            .security-block {
                grid-template-columns: 1fr;
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .header-nav .nav-icon-item {
                padding: 6px 8px;
                font-size: 0.7rem;
                min-width: 44px;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
            }
            .header-search {
                min-width: 140px;
            }
        }
        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
                height: auto;
                padding: 12px 0;
                gap: 10px;
            }
            .header-nav {
                order: 3;
                width: 100%;
                overflow-x: auto;
                flex-wrap: nowrap;
                gap: 2px;
                padding-bottom: 6px;
                -webkit-overflow-scrolling: touch;
                scrollbar-width: none;
                justify-content: flex-start;
            }
            .header-nav::-webkit-scrollbar {
                display: none;
            }
            .header-nav .nav-icon-item {
                flex-shrink: 0;
                padding: 6px 10px;
                font-size: 0.7rem;
                min-width: 40px;
            }
            .header-search {
                min-width: 120px;
                flex: 1;
                max-width: 200px;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .hero-whitepaper-card {
                max-width: 100%;
            }
            .pain-grid,
            .solution-grid,
            .collection-grid,
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .metrics-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .steps-flow {
                grid-template-columns: 1fr 1fr;
            }
            .guarantee-strip {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            section {
                padding: 40px 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.95rem;
            }
            .hero-stats-row {
                gap: 16px;
            }
            .hero-stat .stat-value {
                font-size: 1.2rem;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .story-block {
                padding: 32px 24px;
            }
            .story-block h3 {
                font-size: 1.3rem;
            }
        }
        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 1.35rem;
            }
            .hero-subtitle {
                font-size: 0.9rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .hero-cta-group .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-whitepaper-card .wp-form {
                flex-direction: column;
            }
            .metrics-row {
                grid-template-columns: 1fr 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .guarantee-strip {
                grid-template-columns: 1fr;
            }
            .cta-section .cta-form-row {
                flex-direction: column;
            }
            .cta-section .cta-form-row input {
                width: 100%;
            }
            .header-nav .nav-icon-item {
                padding: 5px 7px;
                font-size: 0.65rem;
                min-width: 32px;
            }
            .header-nav .nav-icon-item i {
                font-size: 0.85rem;
            }
            .header-brand {
                font-size: 1.1rem;
            }
            .header-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .header-search {
                min-width: 100px;
                max-width: 150px;
                padding: 6px 10px;
            }
            .header-search input {
                font-size: 0.78rem;
            }
        }

/* roulang page: category3 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }

        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }

        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }

        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 12px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .header-nav .nav-icon-item i {
            font-size: 1.15rem;
            transition: transform var(--transition-fast);
        }

        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
        }

        .header-nav .nav-icon-item:hover i {
            transform: translateY(-2px);
        }

        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .header-nav .nav-icon-item.active i {
            color: var(--color-primary);
        }

        .mobile-menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        /* Hero - 白皮书获客风格 */
        .hero-section {
            background: var(--color-bg-white);
            padding: 60px 0 70px;
            border-bottom: 1px solid var(--color-border-light);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .hero-cover {
            background: linear-gradient(145deg, #f0f4ff, #e8ecf8);
            border-radius: var(--radius-xl);
            padding: 40px 30px;
            text-align: center;
            box-shadow: var(--color-shadow-lg);
            position: relative;
            overflow: hidden;
            min-height: 420px;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .hero-cover::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-cover .cover-badge {
            display: inline-block;
            background: var(--color-primary);
            color: #fff;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 20px;
            letter-spacing: 0.03em;
        }

        .hero-cover .cover-title {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .hero-cover .cover-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            margin-bottom: 24px;
            line-height: 1.6;
        }

        .hero-cover .cover-toc {
            text-align: left;
            background: #fff;
            border-radius: var(--radius);
            padding: 20px 24px;
            width: 100%;
            max-width: 320px;
            box-shadow: var(--color-shadow-sm);
        }

        .hero-cover .cover-toc h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 10px;
            letter-spacing: 0.02em;
        }

        .hero-cover .cover-toc ul {
            list-style: none;
            padding: 0;
        }

        .hero-cover .cover-toc ul li {
            padding: 6px 0;
            font-size: 0.85rem;
            color: var(--color-text-muted);
            border-bottom: 1px dashed var(--color-border-light);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .hero-cover .cover-toc ul li i {
            color: var(--color-primary);
            font-size: 0.7rem;
            flex-shrink: 0;
        }

        .hero-cover .cover-toc ul li:last-child {
            border-bottom: none;
        }

        .hero-content h1 {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--color-text-strong);
            line-height: 1.25;
            margin-bottom: 18px;
            letter-spacing: -0.02em;
        }

        .hero-content .hero-summary {
            font-size: 1.1rem;
            color: var(--color-text-muted);
            line-height: 1.8;
            margin-bottom: 28px;
        }

        .hero-form {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        .hero-form input {
            flex: 1;
            min-width: 200px;
            padding: 14px 18px;
            border-radius: var(--radius);
            border: 1px solid var(--color-border);
            font-size: 0.95rem;
            background: var(--color-bg);
        }

        .hero-form input:focus {
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.08);
            background: #fff;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.02em;
            cursor: pointer;
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 2px solid var(--color-primary);
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-1px);
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            text-decoration: none;
            transform: translateY(-1px);
        }

        .btn-sm {
            padding: 8px 18px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        /* 板块通用 */
        .section {
            padding: 70px 0;
        }

        .section-bg-white {
            background: var(--color-bg-white);
        }

        .section-bg-light {
            background: var(--color-bg);
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
        }

        .section-header .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 650px;
            margin: 0 auto;
            line-height: 1.7;
        }

        .badge {
            display: inline-block;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .badge-secondary {
            background: var(--color-secondary-light);
            color: #b45309;
        }

        /* 痛点区 */
        .pain-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .pain-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: #fef2f2;
            color: #ef4444;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 16px;
        }

        .pain-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* 解决方案区 */
        .solution-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .solution-item {
            display: flex;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            align-items: flex-start;
        }

        .solution-item:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
        }

        .solution-item .sol-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            flex-shrink: 0;
        }

        .solution-item .sol-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }

        .solution-item .sol-body p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.65;
        }

        /* 规则卡片 */
        .rules-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .rule-card {
            background: #fff;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .rule-card:hover {
            box-shadow: var(--color-shadow-xl);
            transform: translateY(-4px);
        }

        .rule-card .rule-img {
            height: 180px;
            overflow: hidden;
            position: relative;
        }

        .rule-card .rule-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-slow);
        }

        .rule-card:hover .rule-img img {
            transform: scale(1.05);
        }

        .rule-card .rule-body {
            padding: 20px;
        }

        .rule-card .rule-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }

        .rule-card .rule-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            line-height: 1.65;
            margin-bottom: 14px;
        }

        .rule-card .rule-body .rule-meta {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 0.78rem;
            color: var(--color-text-light);
        }

        .rule-card .rule-body .rule-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .rule-card .rule-body .rule-meta i {
            color: var(--color-primary);
            font-size: 0.7rem;
        }

        /* 证言区 */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 16px;
            right: 20px;
            font-size: 4rem;
            color: var(--color-primary-light);
            font-family: Georgia, serif;
            line-height: 1;
            pointer-events: none;
            opacity: 0.6;
        }

        .testimonial-card .test-text {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.75;
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .testimonial-card .test-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .test-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-card .test-author .author-info {
            font-size: 0.85rem;
            color: var(--color-text-muted);
        }

        .testimonial-card .test-author .author-info strong {
            color: var(--color-text-strong);
            display: block;
            font-size: 0.9rem;
        }

        /* 数据亮点 */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .stat-card {
            text-align: center;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }

        .stat-card .stat-number {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
        }

        .faq-item summary {
            padding: 18px 24px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            transition: background var(--transition-fast);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            background: var(--color-bg);
        }

        .faq-item summary .faq-icon {
            font-size: 0.8rem;
            color: var(--color-primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(180deg);
        }

        .faq-item .faq-answer {
            padding: 0 24px 20px;
            font-size: 0.93rem;
            color: var(--color-text-muted);
            line-height: 1.75;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1a56db 0%, #1e40af 100%);
            padding: 60px 0;
            text-align: center;
            border-radius: 0;
        }

        .cta-section h2 {
            color: #fff;
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 14px;
            letter-spacing: -0.01em;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1.05rem;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .btn-cta {
            background: #fff;
            color: var(--color-primary);
            border: 2px solid #fff;
            font-weight: 700;
            padding: 15px 36px;
            font-size: 1rem;
            border-radius: var(--radius);
        }

        .btn-cta:hover {
            background: var(--color-secondary);
            color: #fff;
            border-color: var(--color-secondary);
            text-decoration: none;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #1e293b;
            color: #cbd5e1;
            padding: 50px 0 30px;
            font-size: 0.9rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid #334155;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #94a3b8;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 0.8rem;
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-links span {
            color: #64748b;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-cover {
                min-height: auto;
                padding: 32px 24px;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .rules-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-lg);
                gap: 4px;
                z-index: 999;
            }
            .header-nav.active {
                display: flex;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 10px;
                padding: 12px 16px;
                font-size: 0.9rem;
                justify-content: flex-start;
                width: 100%;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 1.7rem;
            }
            .hero-form {
                flex-direction: column;
            }
            .pain-grid {
                grid-template-columns: 1fr;
            }
            .rules-grid {
                grid-template-columns: 1fr;
            }
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .section {
                padding: 48px 0;
            }
            .hero-section {
                padding: 40px 0 48px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-content h1 {
                font-size: 1.45rem;
            }
            .hero-cover .cover-toc {
                max-width: 100%;
            }
            .stats-row {
                grid-template-columns: 1fr;
            }
            .stat-card .stat-number {
                font-size: 2.2rem;
            }
            .btn {
                padding: 11px 20px;
                font-size: 0.88rem;
            }
            .cta-section h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category2 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }

        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }

        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }

        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 12px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 56px;
        }

        .header-nav .nav-icon-item i {
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }

        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
        }

        .header-nav .nav-icon-item:hover i {
            transform: translateY(-2px);
        }

        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .header-nav .nav-icon-item.active i {
            color: var(--color-primary);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: none;
            border: none;
        }

        .mobile-menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background: var(--color-text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        /* Section通用 */
        .section {
            padding: 60px 0;
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-lg {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            margin-bottom: 12px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            max-width: 700px;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-primary);
            color: #fff;
            padding: 12px 28px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            box-shadow: var(--color-shadow-sm);
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-1px);
        }

        .btn-outline-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: var(--color-primary);
            padding: 11px 26px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            border: 2px solid var(--color-primary);
            transition: all var(--transition);
            white-space: nowrap;
        }

        .btn-outline-custom:hover {
            background: var(--color-primary-light);
            color: var(--color-primary-dark);
            text-decoration: none;
            border-color: var(--color-primary-dark);
        }

        .btn-accent-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--color-secondary);
            color: #1e293b;
            padding: 12px 28px;
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            border: none;
            box-shadow: var(--color-shadow);
            white-space: nowrap;
        }

        .btn-accent-custom:hover {
            background: #e68900;
            color: #1e293b;
            text-decoration: none;
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-1px);
        }

        .card-custom {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            padding: 24px;
            transition: all var(--transition);
            height: 100%;
        }

        .card-custom:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }

        .card-custom .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 14px;
            flex-shrink: 0;
        }

        .icon-blue {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .icon-green {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .icon-amber {
            background: var(--color-secondary-light);
            color: var(--color-secondary);
        }

        .badge-custom {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .badge-secondary {
            background: var(--color-secondary-light);
            color: #b45309;
        }

        /* 优惠券墙Hero */
        .coupon-hero {
            background: linear-gradient(160deg, #f0f5ff 0%, #e8f0fe 30%, #f8fafc 70%, #fef9e7 100%);
            padding: 50px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .coupon-hero::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .coupon-hero::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .main-coupon-card {
            background: #fff;
            border-radius: var(--radius-xl);
            box-shadow: var(--color-shadow-xl);
            padding: 32px 28px;
            position: relative;
            border: 2px dashed var(--color-primary);
            text-align: center;
            transition: all var(--transition-slow);
            z-index: 1;
            overflow: hidden;
        }

        .main-coupon-card::before {
            content: '';
            position: absolute;
            top: -30px;
            left: -30px;
            width: 80px;
            height: 80px;
            background: var(--color-secondary);
            border-radius: 50%;
            opacity: 0.15;
            pointer-events: none;
        }

        .main-coupon-card .coupon-ribbon {
            position: absolute;
            top: 16px;
            right: -28px;
            background: var(--color-secondary);
            color: #1e293b;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 5px 32px;
            transform: rotate(45deg);
            z-index: 2;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
        }

        .main-coupon-card .coupon-value {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
            margin: 8px 0;
            letter-spacing: -0.02em;
        }

        .main-coupon-card .coupon-label {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }

        .main-coupon-card .coupon-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 16px;
        }

        .side-coupon-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: 20px 16px;
            border: 1px solid var(--color-border-light);
            text-align: center;
            transition: all var(--transition);
            cursor: pointer;
            height: 100%;
            position: relative;
            z-index: 1;
        }

        .side-coupon-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
            border-color: var(--color-primary-light);
        }

        .side-coupon-card .sc-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
        }

        .side-coupon-card .sc-label {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin: 4px 0;
        }

        .side-coupon-card .sc-desc {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }

        /* 统计数字区 */
        .stats-row-custom {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
            justify-content: center;
        }

        .stat-item-custom {
            text-align: center;
            flex: 1 1 140px;
            min-width: 120px;
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 20px 16px;
            box-shadow: var(--color-shadow-sm);
            border: 1px solid var(--color-border-light);
        }

        .stat-item-custom .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            line-height: 1;
        }

        .stat-item-custom .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* 走势图模拟 */
        .chart-mock {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: 20px;
            border: 1px solid var(--color-border-light);
            position: relative;
            overflow: hidden;
        }

        .chart-mock .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 6px;
            height: 180px;
            padding: 0 4px;
        }

        .chart-mock .chart-bar {
            flex: 1;
            border-radius: 4px 4px 0 0;
            background: linear-gradient(180deg, var(--color-primary) 0%, #93b5f5 100%);
            min-width: 10px;
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
        }

        .chart-mock .chart-bar:hover {
            background: linear-gradient(180deg, var(--color-secondary) 0%, #fcd34d 100%);
            transform: scaleY(1.05);
            transform-origin: bottom;
        }

        .chart-mock .chart-bar.highlight {
            background: linear-gradient(180deg, var(--color-secondary) 0%, #fbbf24 100%);
        }

        /* 证言卡 */
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: 24px;
            border-left: 4px solid var(--color-primary);
            transition: all var(--transition);
            height: 100%;
        }

        .testimonial-card:hover {
            box-shadow: var(--color-shadow-lg);
        }

        .testimonial-card .t-quote {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            font-style: italic;
            margin-bottom: 12px;
        }

        .testimonial-card .t-author {
            font-weight: 600;
            color: var(--color-text-strong);
            font-size: 0.9rem;
        }

        .testimonial-card .t-role {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* 流程步骤 */
        .step-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
            padding: 16px 0;
            position: relative;
        }

        .step-item .step-num {
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
            flex-shrink: 0;
            box-shadow: var(--color-shadow);
        }

        .step-item .step-content h4 {
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 4px;
            font-size: 1rem;
        }

        .step-item .step-content p {
            color: var(--color-text-muted);
            font-size: 0.9rem;
            margin: 0;
        }

        /* FAQ */
        .faq-item {
            background: #fff;
            border-radius: var(--radius);
            box-shadow: var(--color-shadow-sm);
            border: 1px solid var(--color-border-light);
            padding: 18px 20px;
            margin-bottom: 12px;
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .faq-item:hover {
            box-shadow: var(--color-shadow);
            border-color: var(--color-primary-light);
        }

        .faq-item .faq-q {
            font-weight: 600;
            color: var(--color-text-strong);
            font-size: 0.95rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .faq-item .faq-q i {
            color: var(--color-primary);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .faq-item .faq-a {
            color: var(--color-text-muted);
            font-size: 0.88rem;
            margin-top: 8px;
            padding-left: 22px;
            line-height: 1.6;
        }

        /* CTA区块 */
        .cta-section {
            background: linear-gradient(135deg, #1a56db 0%, #1e40af 50%, #143ea8 100%);
            border-radius: var(--radius-xl);
            padding: 48px 32px;
            color: #fff;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -40px;
            right: -40px;
            width: 200px;
            height: 200px;
            background: rgba(255, 255, 255, 0.06);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 150px;
            height: 150px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-weight: 700;
            font-size: 1.8rem;
            margin-bottom: 10px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            margin-bottom: 20px;
            position: relative;
            z-index: 1;
        }

        .cta-section .btn-cta-white {
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .cta-section .btn-cta-white:hover {
            background: #f0f5ff;
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(0, 0, 0, 0.28);
            text-decoration: none;
            color: var(--color-primary-dark);
        }

        /* 页脚 */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: 40px;
        }

        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 32px;
            margin-bottom: 32px;
        }

        .site-footer .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .site-footer h4 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 12px;
        }

        .site-footer ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .site-footer ul li {
            margin-bottom: 6px;
        }

        .site-footer ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .site-footer ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .site-footer .footer-bottom {
            border-top: 1px solid #1e293b;
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #64748b;
        }

        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .site-footer .footer-links a {
            color: #94a3b8;
            font-size: 0.8rem;
        }

        .site-footer .footer-links a:hover {
            color: #fff;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .header-nav {
                gap: 2px;
            }
            .header-nav .nav-icon-item {
                padding: 6px 8px;
                font-size: 0.7rem;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .main-coupon-card .coupon-value {
                font-size: 2.5rem;
            }
            .coupon-hero {
                padding: 36px 0 44px;
            }
            .section {
                padding: 44px 0;
            }
            .section-lg {
                padding: 56px 0;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 12px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-lg);
                gap: 2px;
                z-index: 999;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 10px;
                padding: 10px 16px;
                font-size: 0.9rem;
                width: 100%;
                justify-content: flex-start;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
                width: 20px;
                text-align: center;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .section-subtitle {
                font-size: 0.9rem;
            }
            .main-coupon-card .coupon-value {
                font-size: 2rem;
            }
            .main-coupon-card {
                padding: 20px 16px;
            }
            .side-coupon-card {
                padding: 14px 12px;
            }
            .side-coupon-card .sc-value {
                font-size: 1.3rem;
            }
            .coupon-hero {
                padding: 28px 0 36px;
            }
            .section {
                padding: 32px 0;
            }
            .section-lg {
                padding: 40px 0;
            }
            .stat-item-custom .stat-num {
                font-size: 1.6rem;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-lg);
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
            .chart-mock .chart-bars {
                height: 120px;
                gap: 3px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .site-footer .footer-links {
                justify-content: center;
                flex-wrap: wrap;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                padding: 0 12px;
                gap: 10px;
            }
            .header-brand {
                font-size: 1.1rem;
            }
            .header-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.9rem;
            }
            .container {
                padding: 0 14px;
            }
            .section-title {
                font-size: 1.25rem;
            }
            .main-coupon-card .coupon-value {
                font-size: 1.7rem;
            }
            .main-coupon-card .coupon-ribbon {
                font-size: 0.7rem;
                padding: 4px 24px;
                right: -24px;
                top: 10px;
            }
            .coupon-hero {
                padding: 20px 0 28px;
            }
            .section {
                padding: 24px 0;
            }
            .section-lg {
                padding: 32px 0;
            }
            .stat-item-custom {
                flex: 1 1 100px;
                min-width: 90px;
                padding: 14px 10px;
            }
            .stat-item-custom .stat-num {
                font-size: 1.3rem;
            }
            .stat-item-custom .stat-label {
                font-size: 0.72rem;
            }
            .stats-row-custom {
                gap: 10px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .btn-primary-custom,
            .btn-accent-custom,
            .btn-outline-custom {
                padding: 10px 20px;
                font-size: 0.85rem;
            }
            .cta-section h2 {
                font-size: 1.2rem;
            }
            .card-custom {
                padding: 16px;
            }
            .chart-mock .chart-bars {
                height: 100px;
                gap: 2px;
            }
            .chart-mock .chart-bar {
                min-width: 6px;
            }
        }

/* roulang page: category1 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }

        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }

        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }

        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
            -ms-overflow-style: none;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 11px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 56px;
            position: relative;
        }

        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
        }

        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }

        .header-nav .nav-icon-item.active::after {
            content: '';
            position: absolute;
            bottom: 2px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 3px;
            background: var(--color-primary);
            border-radius: 3px;
        }

        .header-nav .nav-icon-item i {
            font-size: 1.15rem;
            transition: transform var(--transition-fast);
        }

        .header-nav .nav-icon-item:hover i {
            transform: translateY(-2px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 1.4rem;
            color: var(--color-text);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition-fast);
        }

        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        @media (max-width: 1024px) {
            .header-nav {
                gap: 2px;
            }
            .header-nav .nav-icon-item {
                padding: 6px 8px;
                font-size: 0.7rem;
                min-width: 44px;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-white);
                flex-wrap: wrap;
                justify-content: center;
                gap: 4px;
                padding: 12px 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow);
                transform: translateY(-110%);
                opacity: 0;
                pointer-events: none;
                transition: all var(--transition);
                z-index: 999;
            }
            .header-nav.mobile-open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 6px;
                padding: 10px 14px;
                font-size: 0.82rem;
                min-width: auto;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
            }
            .header-nav .nav-icon-item.active::after {
                display: none;
            }
        }

        @media (max-width: 520px) {
            .header-brand {
                font-size: 1.1rem;
                gap: 6px;
            }
            .header-brand .brand-icon {
                width: 30px;
                height: 30px;
                font-size: 0.85rem;
            }
            .header-nav .nav-icon-item {
                padding: 8px 10px;
                font-size: 0.7rem;
                gap: 4px;
            }
            .header-nav .nav-icon-item i {
                font-size: 0.85rem;
            }
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: 0.01em;
        }

        .btn:hover {
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: var(--color-shadow-lg);
        }

        .btn:active {
            transform: translateY(0);
            box-shadow: var(--color-shadow-sm);
        }

        .btn-primary {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
        }

        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }

        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
        }

        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        .btn-accent {
            background: var(--color-accent);
            color: #fff;
        }

        .btn-accent:hover {
            background: #059669;
            color: #fff;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            padding: 5px 12px;
            border-radius: 999px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }

        .badge-accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }

        .badge-secondary {
            background: var(--color-secondary-light);
            color: #b45309;
        }

        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--color-shadow);
            transition: all var(--transition);
            overflow: hidden;
        }

        .card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
        }

        .card-body {
            padding: 24px;
        }

        .section {
            padding: 64px 0;
        }

        .section-sm {
            padding: 40px 0;
        }

        .section-lg {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            letter-spacing: -0.02em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        .section-header {
            text-align: center;
            margin-bottom: 48px;
        }

        .section-header .section-title {
            margin-bottom: 12px;
        }

        .bg-white {
            background: var(--color-bg-white);
        }

        .bg-primary-light {
            background: var(--color-primary-light);
        }

        .bg-soft {
            background: #f1f5f9;
        }

        .hero-progress-ring {
            position: relative;
            width: 180px;
            height: 180px;
            flex-shrink: 0;
        }

        .hero-progress-ring svg {
            transform: rotate(-90deg);
            width: 100%;
            height: 100%;
        }

        .hero-progress-ring .ring-bg {
            fill: none;
            stroke: #e8ecf1;
            stroke-width: 8;
        }

        .hero-progress-ring .ring-fill {
            fill: none;
            stroke: var(--color-primary);
            stroke-width: 8;
            stroke-linecap: round;
            transition: stroke-dashoffset 1s ease;
        }

        .hero-progress-ring .ring-inner {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
        }

        .hero-progress-ring .ring-value {
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            line-height: 1;
        }

        .hero-progress-ring .ring-label {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        .tier-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            border: 2px solid var(--color-border);
            padding: 20px;
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
        }

        .tier-card:hover {
            border-color: var(--color-primary);
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }

        .tier-card.featured {
            border-color: var(--color-primary);
            box-shadow: var(--color-shadow);
            background: linear-gradient(180deg, #ffffff 0%, #f0f5ff 100%);
        }

        .tier-card .tier-badge {
            position: absolute;
            top: -10px;
            right: 16px;
            background: var(--color-secondary);
            color: #fff;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 0.72rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }

        .tier-card .tier-name {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }

        .tier-card .tier-prize {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--color-primary);
            margin-bottom: 8px;
        }

        .tier-card .tier-time {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-bottom: 12px;
        }

        .result-number-ball {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, #e63946, #d62839);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            margin: 0 3px;
            box-shadow: 0 2px 8px rgba(230, 57, 70, 0.3);
        }

        .result-number-ball.blue {
            background: linear-gradient(135deg, #1a56db, #3b82f6);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.3);
        }

        .stat-card {
            text-align: center;
            padding: 28px 20px;
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
            transition: all var(--transition);
        }

        .stat-card:hover {
            box-shadow: var(--color-shadow);
            transform: translateY(-2px);
        }

        .stat-card .stat-value {
            font-size: 2.6rem;
            font-weight: 700;
            color: var(--color-primary);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .testimonial-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
            position: relative;
        }

        .testimonial-card::before {
            content: '"';
            position: absolute;
            top: 12px;
            left: 20px;
            font-size: 4rem;
            color: var(--color-primary-light);
            font-weight: 700;
            line-height: 1;
            opacity: 0.5;
            pointer-events: none;
        }

        .testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 16px;
            padding-top: 8px;
        }

        .testimonial-card .testimonial-author {
            font-weight: 600;
            color: var(--color-text-strong);
            font-size: 0.9rem;
        }

        .testimonial-card .testimonial-role {
            font-size: 0.8rem;
            color: var(--color-text-muted);
        }

        .faq-item {
            border-bottom: 1px solid var(--color-border);
            padding: 18px 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--color-border);
        }

        .faq-question {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--color-text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            width: 100%;
            text-align: left;
            padding: 0;
            background: none;
            border: none;
        }

        .faq-question:hover {
            color: var(--color-primary);
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            font-size: 0.9rem;
            color: var(--color-text-muted);
        }

        .faq-question.open i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-fast);
            color: var(--color-text-muted);
            font-size: 0.93rem;
            line-height: 1.7;
        }

        .faq-answer.open {
            max-height: 400px;
            padding-top: 12px;
        }

        .site-footer {
            background: #1a1f2e;
            color: #cbd5e1;
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            padding-bottom: 36px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-col h4 {
            color: #fff;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.88rem;
            transition: color var(--transition-fast);
            text-decoration: none;
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            font-size: 0.82rem;
            color: #64748b;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 0.82rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        @media (max-width: 992px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }

        @media (max-width: 768px) {
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.55rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .hero-progress-ring {
                width: 140px;
                height: 140px;
            }
            .hero-progress-ring .ring-value {
                font-size: 1.7rem;
            }
            .result-number-ball {
                width: 32px;
                height: 32px;
                font-size: 0.85rem;
                margin: 0 2px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .btn-lg {
                padding: 12px 20px;
                font-size: 0.9rem;
            }
            .hero-progress-ring {
                width: 110px;
                height: 110px;
            }
            .hero-progress-ring .ring-value {
                font-size: 1.4rem;
            }
            .hero-progress-ring .ring-label {
                font-size: 0.7rem;
            }
            .result-number-ball {
                width: 28px;
                height: 28px;
                font-size: 0.75rem;
                margin: 0 1px;
            }
            .stat-card .stat-value {
                font-size: 2rem;
            }
        }

        .hero-section {
            background: linear-gradient(170deg, #f8fafc 0%, #e8f0fe 40%, #ffffff 100%);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -80px;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .pain-point-item {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid var(--color-border-light);
        }

        .pain-point-item:last-child {
            border-bottom: none;
        }

        .pain-point-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: #fef2f2;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #ef4444;
            font-size: 1.1rem;
            flex-shrink: 0;
        }

        .pain-point-item h5 {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin-bottom: 2px;
        }

        .pain-point-item p {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.5;
        }

        .solution-feature {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            padding: 12px 0;
        }

        .solution-feature .feature-icon {
            width: 42px;
            height: 42px;
            border-radius: var(--radius);
            background: var(--color-accent-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-accent);
            font-size: 1rem;
            flex-shrink: 0;
        }

        .result-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .result-mini-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.9rem;
        }

        .result-mini-table th {
            background: #f8fafc;
            padding: 12px 14px;
            text-align: left;
            font-weight: 600;
            color: var(--color-text-strong);
            white-space: nowrap;
            border-bottom: 2px solid var(--color-border);
            font-size: 0.85rem;
        }

        .result-mini-table td {
            padding: 12px 14px;
            border-bottom: 1px solid var(--color-border-light);
            white-space: nowrap;
            color: var(--color-text);
        }

        .result-mini-table tbody tr:hover {
            background: #f8fafc;
        }

        .result-mini-table .highlight-row {
            background: #fefce8;
        }

        .cta-section {
            background: linear-gradient(135deg, #1a56db 0%, #143ea8 100%);
            color: #fff;
            padding: 64px 0;
            text-align: center;
            border-radius: 0;
        }

        .cta-section .section-title {
            color: #fff;
        }

        .cta-section .section-subtitle {
            color: rgba(255, 255, 255, 0.8);
        }

/* roulang page: category4 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
            padding-top: var(--nav-height);
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }

        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }

        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }

        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
            height: var(--nav-height);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }

        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }

        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }

        .header-nav {
            display: flex;
            align-items: center;
            gap: 4px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }

        .header-nav::-webkit-scrollbar {
            display: none;
        }

        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 11px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.76rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 52px;
            border: 1px solid transparent;
            background: transparent;
        }

        .header-nav .nav-icon-item i {
            font-size: 1.05rem;
            transition: transform var(--transition-fast);
        }

        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
            border-color: rgba(26, 86, 219, 0.15);
        }

        .header-nav .nav-icon-item:hover i {
            transform: translateY(-2px);
        }

        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
            border-color: rgba(26, 86, 219, 0.25);
            box-shadow: var(--color-shadow-sm);
        }

        .header-nav .nav-icon-item.active i {
            color: var(--color-primary-dark);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            z-index: 1001;
            background: transparent;
            border: none;
        }

        .mobile-menu-toggle span {
            width: 24px;
            height: 2px;
            background: var(--color-text-strong);
            border-radius: 2px;
            transition: all var(--transition-fast);
            display: block;
        }

        /* Hero Video Style */
        .hero-video-section {
            position: relative;
            width: 100%;
            min-height: 580px;
            background: url('/assets/images/backpic/back-1.webp') center center / cover no-repeat;
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }

        .hero-video-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 23, 42, 0.75) 0%, rgba(15, 23, 42, 0.85) 40%, rgba(15, 23, 42, 0.92) 100%);
            z-index: 1;
        }

        .hero-video-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 60px 24px;
            max-width: 800px;
            width: 100%;
        }

        .hero-play-btn {
            width: 80px;
            height: 80px;
            border-radius: var(--radius-full);
            background: rgba(255, 255, 255, 0.95);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition);
            box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.5);
            animation: pulse-ring 2.2s ease-out infinite;
            margin-bottom: 28px;
            border: none;
        }

        .hero-play-btn:hover {
            background: #fff;
            transform: scale(1.08);
            box-shadow: 0 0 0 20px rgba(255, 255, 255, 0);
            animation: none;
        }

        .hero-play-btn i {
            font-size: 2rem;
            color: var(--color-primary);
            margin-left: 4px;
            transition: transform var(--transition-fast);
        }

        .hero-play-btn:hover i {
            transform: scale(1.1);
        }

        @keyframes pulse-ring {
            0% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0.55);
            }
            70% {
                box-shadow: 0 0 0 28px rgba(255, 255, 255, 0);
            }
            100% {
                box-shadow: 0 0 0 0 rgba(255, 255, 255, 0);
            }
        }

        .hero-video-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: #ffffff;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .hero-video-content .hero-subtitle {
            font-size: 1.15rem;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .hero-video-content .hero-cta-group {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .btn-primary-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: var(--color-primary);
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition);
            border: 2px solid var(--color-primary);
            white-space: nowrap;
        }

        .btn-primary-custom:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: var(--color-shadow-lg);
        }

        .btn-outline-light-custom {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 32px;
            background: transparent;
            color: #fff;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 1rem;
            text-decoration: none;
            transition: all var(--transition);
            border: 2px solid rgba(255, 255, 255, 0.5);
            white-space: nowrap;
        }

        .btn-outline-light-custom:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: var(--color-shadow-lg);
        }

        /* Sections */
        .section {
            padding: 72px 0;
        }

        .section-alt {
            background: var(--color-bg-white);
        }

        .section-label {
            display: inline-block;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 12px;
            letter-spacing: 0.03em;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 12px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            margin-bottom: 40px;
            line-height: 1.7;
            max-width: 650px;
        }

        .section-title.text-center+.section-subtitle {
            margin-left: auto;
            margin-right: auto;
            text-align: center;
        }

        /* Pain Point Cards */
        .pain-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            transition: all var(--transition);
            height: 100%;
            position: relative;
            overflow: hidden;
        }

        .pain-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
            border-color: #fecaca;
        }

        .pain-card .pain-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            background: #fef2f2;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            color: #ef4444;
            margin-bottom: 16px;
        }

        .pain-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }

        .pain-card p {
            font-size: 0.92rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* Solution Cards */
        .solution-card {
            background: var(--color-bg-card);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: all var(--transition);
            height: 100%;
            text-align: center;
            box-shadow: var(--color-shadow-sm);
        }

        .solution-card:hover {
            box-shadow: var(--color-shadow-xl);
            transform: translateY(-4px);
            border-color: rgba(26, 86, 219, 0.3);
        }

        .solution-card .solution-icon {
            width: 60px;
            height: 60px;
            border-radius: var(--radius);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--color-primary);
            margin: 0 auto 18px;
            transition: all var(--transition);
        }

        .solution-card:hover .solution-icon {
            background: var(--color-primary);
            color: #fff;
            transform: scale(1.05);
        }

        .solution-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }

        .solution-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* Results Stats */
        .stat-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 32px 20px;
            text-align: center;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }

        .stat-card:hover {
            box-shadow: var(--color-shadow-xl);
            transform: translateY(-3px);
        }

        .stat-card .stat-number {
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
            margin-bottom: 8px;
        }

        .stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            font-weight: 500;
        }

        /* Testimonial Cards */
        .testimonial-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            position: relative;
            height: 100%;
            transition: all var(--transition);
        }

        .testimonial-card:hover {
            box-shadow: var(--color-shadow-xl);
            transform: translateY(-3px);
        }

        .testimonial-card .quote-icon {
            font-size: 2rem;
            color: var(--color-primary-light);
            position: absolute;
            top: 16px;
            left: 20px;
            opacity: 0.6;
        }

        .testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 16px;
            padding-top: 16px;
            font-style: italic;
        }

        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-card .author-avatar {
            width: 42px;
            height: 42px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .testimonial-card .author-info .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-strong);
        }

        .testimonial-card .author-info .author-role {
            font-size: 0.78rem;
            color: var(--color-text-light);
        }

        /* Scenario Cards */
        .scenario-card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }

        .scenario-card:hover {
            box-shadow: var(--color-shadow-xl);
            transform: translateY(-4px);
        }

        .scenario-card .scenario-img {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .scenario-card .scenario-body {
            padding: 20px;
        }

        .scenario-card .scenario-body h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }

        .scenario-card .scenario-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* Process Steps */
        .process-step {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            position: relative;
        }

        .process-step+.process-step {
            border-top: 1px dashed var(--color-border);
        }

        .process-step .step-number {
            width: 50px;
            height: 50px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            flex-shrink: 0;
            box-shadow: var(--color-shadow);
        }

        .process-step .step-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 4px;
        }

        .process-step .step-content p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            margin-bottom: 12px;
            background: var(--color-bg-white);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(26, 86, 219, 0.25);
        }

        .faq-question {
            width: 100%;
            padding: 18px 24px;
            text-align: left;
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            background: transparent;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            cursor: pointer;
            border: none;
            transition: all var(--transition-fast);
        }

        .faq-question:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
        }

        .faq-question i {
            transition: transform var(--transition-fast);
            color: var(--color-text-muted);
            font-size: 0.85rem;
        }

        .faq-question[aria-expanded="true"] i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }

        .faq-answer {
            padding: 0 24px 18px;
            font-size: 0.92rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            display: none;
        }

        .faq-answer.show {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--color-primary), #1e40af);
            border-radius: var(--radius-xl);
            padding: 56px 40px;
            text-align: center;
            color: #fff;
            margin: 0 24px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -40px;
            left: -40px;
            width: 140px;
            height: 140px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.04);
            pointer-events: none;
        }

        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-section p {
            font-size: 1.05rem;
            opacity: 0.9;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 550px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-cta-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 15px 36px;
            background: #fff;
            color: var(--color-primary);
            border-radius: var(--radius);
            font-weight: 700;
            font-size: 1.05rem;
            text-decoration: none;
            transition: all var(--transition);
            position: relative;
            z-index: 1;
        }

        .cta-section .btn-cta-white:hover {
            background: #f0f4ff;
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
            text-decoration: none;
            color: var(--color-primary-dark);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 0.95rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.02em;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.88rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: #64748b;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .footer-links a {
            color: #94a3b8;
            font-size: 0.8rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }

        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }

        /* Modal */
        .video-modal .modal-dialog {
            max-width: 800px;
        }

        .video-modal .modal-content {
            background: #0f172a;
            border: none;
            border-radius: var(--radius-lg);
        }

        .video-modal .modal-body {
            padding: 0;
            aspect-ratio: 16/9;
            display: flex;
            align-items: center;
            justify-content: center;
            background: #000;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }

        .video-placeholder {
            color: #fff;
            text-align: center;
            padding: 40px;
        }

        .video-placeholder i {
            font-size: 3rem;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 16px;
        }

        .video-placeholder p {
            font-size: 1rem;
            color: rgba(255, 255, 255, 0.7);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-nav .nav-icon-item {
                padding: 6px 8px;
                font-size: 0.7rem;
                gap: 2px;
            }
            .header-nav .nav-icon-item i {
                font-size: 0.95rem;
            }
            .hero-video-content h1 {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .section {
                padding: 52px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                position: fixed;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-white);
                flex-direction: column;
                align-items: stretch;
                padding: 12px;
                gap: 4px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-lg);
                display: none;
                z-index: 999;
                max-height: calc(100vh - var(--nav-height));
                overflow-y: auto;
            }
            .header-nav.mobile-open {
                display: flex;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 10px;
                padding: 12px 16px;
                font-size: 0.9rem;
                border-radius: var(--radius);
                justify-content: flex-start;
            }
            .header-nav .nav-icon-item i {
                font-size: 1.1rem;
                width: 24px;
                text-align: center;
            }
            .mobile-menu-toggle {
                display: flex;
            }
            .hero-video-section {
                min-height: 440px;
            }
            .hero-video-content h1 {
                font-size: 1.8rem;
            }
            .hero-video-content .hero-subtitle {
                font-size: 0.95rem;
            }
            .hero-play-btn {
                width: 60px;
                height: 60px;
            }
            .hero-play-btn i {
                font-size: 1.5rem;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .cta-section {
                padding: 36px 20px;
                margin: 0 12px;
                border-radius: var(--radius-lg);
            }
            .cta-section h3 {
                font-size: 1.4rem;
            }
            .btn-primary-custom,
            .btn-outline-light-custom {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .process-step {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
            .process-step .step-number {
                margin: 0 auto;
            }
        }

        @media (max-width: 520px) {
            .hero-video-section {
                min-height: 380px;
            }
            .hero-video-content h1 {
                font-size: 1.5rem;
            }
            .hero-video-content .hero-subtitle {
                font-size: 0.85rem;
            }
            .hero-cta-group {
                flex-direction: column;
                align-items: center;
            }
            .hero-cta-group .btn-primary-custom,
            .hero-cta-group .btn-outline-light-custom {
                width: 100%;
                justify-content: center;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .stat-card .stat-number {
                font-size: 2rem;
            }
        }

/* roulang page: category5 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }
        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 12px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 56px;
        }
        .header-nav .nav-icon-item i {
            font-size: 1.1rem;
            transition: transform var(--transition-fast);
        }
        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
        }
        .header-nav .nav-icon-item:hover i {
            transform: translateY(-2px);
        }
        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }
        .header-nav .nav-icon-item.active i {
            color: var(--color-primary);
        }

        /* Mobile menu toggle */
        .mobile-menu-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: background var(--transition-fast);
        }
        .mobile-menu-toggle:hover {
            background: var(--color-border-light);
        }

        /* Section spacing */
        .section {
            padding: 60px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-lg {
            padding: 80px 0;
        }
        .section-bg-white {
            background: var(--color-bg-white);
        }
        .section-bg-light {
            background: var(--color-bg);
        }
        .section-bg-primary-light {
            background: var(--color-primary-light);
        }

        .section-title {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
            letter-spacing: -0.01em;
        }
        .section-subtitle {
            font-size: 1rem;
            color: var(--color-text-muted);
            margin-bottom: 32px;
            max-width: 640px;
        }
        .section-header {
            text-align: center;
            margin-bottom: 40px;
        }
        .section-header .section-title {
            margin-bottom: 10px;
        }
        .section-header .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Buttons */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            text-decoration: none;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.01em;
            cursor: pointer;
        }
        .btn:hover {
            text-decoration: none;
            transform: translateY(-2px);
            box-shadow: var(--color-shadow-lg);
        }
        .btn:active {
            transform: translateY(0);
            box-shadow: var(--color-shadow-sm);
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            border: 2px solid var(--color-primary);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            border-color: var(--color-primary-dark);
            color: #fff;
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            border: 2px solid var(--color-accent);
        }
        .btn-accent:hover {
            background: #059669;
            border-color: #059669;
            color: #fff;
        }
        .btn-lg {
            padding: 16px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 0.85rem;
            border-radius: var(--radius-sm);
        }

        /* Badge */
        .badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            white-space: nowrap;
        }
        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .badge-accent {
            background: var(--color-accent-light);
            color: #059669;
        }
        .badge-secondary {
            background: var(--color-secondary-light);
            color: #b45309;
        }

        /* Cards */
        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--color-border);
            padding: 24px;
            transition: all var(--transition);
            box-shadow: var(--color-shadow-sm);
            height: 100%;
        }
        .card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
            border-color: transparent;
        }
        .card-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            margin-bottom: 14px;
            flex-shrink: 0;
        }
        .card-icon.blue {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .card-icon.green {
            background: var(--color-accent-light);
            color: #059669;
        }
        .card-icon.amber {
            background: var(--color-secondary-light);
            color: #b45309;
        }
        .card-title {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--color-text-strong);
            margin-bottom: 6px;
        }
        .card-desc {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }
        .card-image {
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 14px;
        }
        .card-image img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        /* Grid */
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        /* Bento Hero */
        .bento-hero {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            grid-template-rows: auto auto;
            gap: 16px;
            padding: 48px 0;
            align-items: start;
        }
        .bento-main {
            grid-row: 1 / 3;
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 40px 36px;
            box-shadow: var(--color-shadow-lg);
            border: 1px solid var(--color-border);
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .bento-main::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .bento-mini {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 22px 20px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border);
            display: flex;
            align-items: center;
            gap: 14px;
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
        }
        .bento-mini:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
        }
        .bento-mini-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .bento-mini-icon.blue {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .bento-mini-icon.amber {
            background: var(--color-secondary-light);
            color: #b45309;
        }
        .bento-mini-text strong {
            display: block;
            font-size: 0.9rem;
            color: var(--color-text-strong);
            margin-bottom: 2px;
        }
        .bento-mini-text span {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }
        .bento-cta-strip {
            grid-column: 2;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius-lg);
            padding: 18px 22px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 14px;
            color: #fff;
            flex-wrap: wrap;
        }
        .bento-cta-strip span {
            font-weight: 600;
            font-size: 0.9rem;
        }
        .bento-cta-strip .btn {
            background: #fff;
            color: var(--color-primary);
            border: none;
            flex-shrink: 0;
        }
        .bento-cta-strip .btn:hover {
            background: #f0f4ff;
            color: var(--color-primary-dark);
        }

        /* Hero title */
        .hero-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-text-strong);
            line-height: 1.3;
            letter-spacing: -0.02em;
            position: relative;
            z-index: 1;
        }
        .hero-title .highlight {
            color: var(--color-primary);
            position: relative;
        }
        .hero-desc {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            margin-top: 12px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }
        .hero-actions {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* Pain point */
        .pain-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            border: 1px solid #fee2e2;
            box-shadow: var(--color-shadow-sm);
            text-align: center;
            transition: all var(--transition);
            height: 100%;
        }
        .pain-card:hover {
            box-shadow: var(--color-shadow-lg);
            border-color: #fecaca;
        }
        .pain-icon {
            font-size: 2rem;
            margin-bottom: 10px;
            display: block;
        }
        .pain-card .pain-title {
            font-weight: 700;
            color: #b91c1c;
            font-size: 1rem;
            margin-bottom: 4px;
        }
        .pain-card .pain-desc {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            line-height: 1.5;
        }

        /* Solution highlight */
        .solution-block {
            display: flex;
            align-items: center;
            gap: 40px;
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            padding: 40px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border);
        }
        .solution-block .solution-image {
            flex: 0 0 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
        }
        .solution-block .solution-image img {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }
        .solution-block .solution-content {
            flex: 1;
        }
        .solution-block .solution-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 8px;
        }
        .solution-block .solution-content p {
            color: var(--color-text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        /* Stats row */
        .stats-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .stat-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border);
            flex: 1;
            min-width: 150px;
            transition: all var(--transition);
        }
        .stat-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--color-primary);
            letter-spacing: -0.02em;
        }
        .stat-label {
            font-size: 0.85rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }

        /* Testimonial */
        .testimonial-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border);
            position: relative;
            height: 100%;
        }
        .testimonial-card::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--color-primary-light);
            position: absolute;
            top: 8px;
            left: 16px;
            line-height: 1;
            font-family: Georgia, serif;
            pointer-events: none;
        }
        .testimonial-card .testimonial-text {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            position: relative;
            z-index: 1;
            padding-top: 10px;
        }
        .testimonial-card .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid var(--color-border-light);
        }
        .testimonial-card .testimonial-author .avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--color-primary);
            font-weight: 700;
            font-size: 0.9rem;
            flex-shrink: 0;
        }
        .testimonial-card .testimonial-author strong {
            font-size: 0.9rem;
            color: var(--color-text-strong);
        }
        .testimonial-card .testimonial-author span {
            font-size: 0.78rem;
            color: var(--color-text-muted);
        }

        /* Steps */
        .step-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            counter-reset: step;
        }
        .step-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 20px 0;
            border-bottom: 1px solid var(--color-border-light);
            counter-increment: step;
        }
        .step-item:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            border-radius: var(--radius-full);
            background: var(--color-primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }
        .step-item .step-content h4 {
            font-weight: 700;
            color: var(--color-text-strong);
            margin-bottom: 4px;
            font-size: 1.05rem;
        }
        .step-item .step-content p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 10px;
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--color-bg-white);
            border-radius: var(--radius);
            border: 1px solid var(--color-border);
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--color-shadow);
        }
        .faq-question {
            padding: 18px 20px;
            font-weight: 600;
            color: var(--color-text-strong);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 0.95rem;
            user-select: none;
        }
        .faq-question i {
            transition: transform var(--transition);
            color: var(--color-text-muted);
            font-size: 0.85rem;
            flex-shrink: 0;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-slow), padding var(--transition-slow);
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .faq-answer p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
        }

        /* CTA section */
        .cta-section {
            background: linear-gradient(135deg, #1a56db, #1e40af);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            box-shadow: var(--color-shadow-xl);
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -80px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -60px;
            left: -60px;
            width: 200px;
            height: 200px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section h3 {
            font-size: 1.6rem;
            font-weight: 700;
            position: relative;
            z-index: 1;
        }
        .cta-section p {
            font-size: 1rem;
            opacity: 0.9;
            margin-top: 8px;
            position: relative;
            z-index: 1;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn {
            margin-top: 18px;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            letter-spacing: -0.01em;
        }
        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 0.8rem;
            color: #64748b;
        }
        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .footer-links a {
            color: #94a3b8;
            font-size: 0.8rem;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-links span {
            color: #64748b;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .bento-hero {
                grid-template-columns: 1fr;
                grid-template-rows: auto;
            }
            .bento-main {
                grid-row: auto;
            }
            .bento-cta-strip {
                grid-column: auto;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .solution-block {
                flex-direction: column;
            }
            .solution-block .solution-image {
                flex: 0 0 auto;
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-title {
                font-size: 1.7rem;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: var(--color-bg-white);
                flex-direction: row;
                flex-wrap: wrap;
                gap: 4px;
                padding: 12px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-lg);
                z-index: 999;
            }
            .header-nav.open {
                display: flex;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 8px;
                padding: 10px 14px;
                font-size: 0.85rem;
                width: calc(50% - 6px);
                justify-content: flex-start;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .grid-3 {
                grid-template-columns: 1fr;
            }
            .grid-4 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 40px 0;
            }
            .section-lg {
                padding: 50px 0;
            }
            .hero-title {
                font-size: 1.5rem;
            }
            .bento-main {
                padding: 28px 20px;
            }
            .bento-hero {
                padding: 28px 0;
                gap: 10px;
            }
            .bento-mini {
                padding: 16px 14px;
            }
            .bento-cta-strip {
                flex-direction: column;
                text-align: center;
                padding: 16px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h3 {
                font-size: 1.3rem;
            }
            .stats-row {
                flex-direction: column;
            }
            .solution-block {
                padding: 24px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .footer-links {
                justify-content: center;
            }
            .section-title {
                font-size: 1.4rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.3rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 0.9rem;
            }
            .bento-main {
                padding: 20px 16px;
            }
            .bento-mini {
                padding: 12px 10px;
                gap: 8px;
            }
            .bento-mini-icon {
                width: 36px;
                height: 36px;
                font-size: 1rem;
            }
            .card {
                padding: 18px;
            }
            .step-item {
                gap: 12px;
            }
            .step-number {
                width: 36px;
                height: 36px;
                font-size: 0.9rem;
            }
            .stat-card {
                padding: 20px 16px;
            }
            .stat-number {
                font-size: 1.6rem;
            }
        }

/* roulang page: category6 */
:root {
            --color-primary: #1a56db;
            --color-primary-dark: #143ea8;
            --color-primary-light: #e8f0fe;
            --color-secondary: #f59e0b;
            --color-secondary-light: #fef3c7;
            --color-accent: #10b981;
            --color-accent-light: #d1fae5;
            --color-bg: #f8fafc;
            --color-bg-white: #ffffff;
            --color-bg-card: #ffffff;
            --color-text: #1e293b;
            --color-text-strong: #0f172a;
            --color-text-muted: #64748b;
            --color-text-light: #94a3b8;
            --color-border: #e2e8f0;
            --color-border-light: #f1f5f9;
            --color-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06), 0 1px 2px rgba(0, 0, 0, 0.04);
            --color-shadow: 0 4px 16px rgba(0, 0, 0, 0.07), 0 2px 6px rgba(0, 0, 0, 0.04);
            --color-shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.10), 0 4px 12px rgba(0, 0, 0, 0.05);
            --color-shadow-xl: 0 20px 48px rgba(0, 0, 0, 0.13), 0 8px 20px rgba(0, 0, 0, 0.06);
            --radius-sm: 6px;
            --radius: 10px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --radius-full: 50%;
            --font-sans: 'Inter', 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', Arial, sans-serif;
            --font-mono: 'SF Mono', 'Consolas', 'Monaco', monospace;
            --max-width: 1200px;
            --nav-height: 72px;
            --transition-fast: 0.15s ease;
            --transition: 0.25s ease;
            --transition-slow: 0.35s ease;
        }

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            font-size: 16px;
        }

        body {
            font-family: var(--font-sans);
            background-color: var(--color-bg);
            color: var(--color-text);
            line-height: 1.7;
            min-height: 100vh;
            letter-spacing: 0.01em;
            -webkit-text-size-adjust: 100%;
            margin: 0;
            padding: 0;
        }

        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }

        a {
            color: var(--color-primary);
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:hover {
            color: var(--color-primary-dark);
            text-decoration: underline;
        }
        a:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: 3px;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            font-size: inherit;
            transition: all var(--transition);
        }
        button:focus-visible {
            outline: 2px solid var(--color-primary);
            outline-offset: 3px;
            border-radius: var(--radius-sm);
        }

        input {
            font-family: inherit;
            font-size: inherit;
            border: 1px solid var(--color-border);
            border-radius: var(--radius);
            padding: 10px 16px;
            transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
            background: var(--color-bg-white);
        }
        input:focus {
            outline: none;
            border-color: var(--color-primary);
            box-shadow: 0 0 0 3px rgba(26, 86, 219, 0.1);
        }

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            color: var(--color-text-strong);
            line-height: 1.3;
            margin-top: 0;
        }

        p {
            margin-top: 0;
        }

        ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 24px;
        }

        .section {
            padding: 64px 0;
        }
        .section-sm {
            padding: 40px 0;
        }
        .section-lg {
            padding: 80px 0;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            color: var(--color-primary);
            background: var(--color-primary-light);
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 12px;
        }
        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 12px;
            letter-spacing: -0.02em;
            color: var(--color-text-strong);
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--color-text-muted);
            max-width: 680px;
            line-height: 1.7;
            margin-bottom: 0;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: var(--radius);
            font-weight: 600;
            font-size: 0.95rem;
            letter-spacing: 0.01em;
            transition: all var(--transition);
            white-space: nowrap;
            text-decoration: none;
            cursor: pointer;
            border: none;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn-primary {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.25);
        }
        .btn-primary:hover {
            background: var(--color-primary-dark);
            color: #fff;
            box-shadow: 0 6px 20px rgba(26, 86, 219, 0.35);
            transform: translateY(-1px);
        }
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(26, 86, 219, 0.2);
        }
        .btn-outline {
            background: transparent;
            color: var(--color-primary);
            border: 2px solid var(--color-primary);
        }
        .btn-outline:hover {
            background: var(--color-primary);
            color: #fff;
            box-shadow: 0 4px 14px rgba(26, 86, 219, 0.25);
            transform: translateY(-1px);
        }
        .btn-lg {
            padding: 14px 32px;
            font-size: 1.05rem;
            border-radius: var(--radius-lg);
        }
        .btn-accent {
            background: var(--color-accent);
            color: #fff;
            box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
        }
        .btn-accent:hover {
            background: #059669;
            color: #fff;
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.35);
            transform: translateY(-1px);
        }

        .card {
            background: var(--color-bg-card);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            padding: 28px;
            transition: all var(--transition);
            border: 1px solid var(--color-border-light);
        }
        .card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
            border-color: var(--color-border);
        }

        .badge {
            display: inline-block;
            padding: 5px 12px;
            border-radius: 20px;
            font-size: 0.78rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-primary {
            background: var(--color-primary-light);
            color: var(--color-primary);
        }
        .badge-accent {
            background: var(--color-accent-light);
            color: var(--color-accent);
        }
        .badge-secondary {
            background: var(--color-secondary-light);
            color: #b45309;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--color-bg-white);
            border-bottom: 1px solid var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--nav-height);
            gap: 20px;
        }
        .header-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--color-text-strong);
            white-space: nowrap;
            text-decoration: none;
            letter-spacing: -0.01em;
            flex-shrink: 0;
        }
        .header-brand:hover {
            text-decoration: none;
            color: var(--color-primary);
        }
        .header-brand .brand-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--color-primary), #3b82f6);
            border-radius: var(--radius);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.1rem;
            font-weight: 700;
            flex-shrink: 0;
        }
        .header-nav {
            display: flex;
            align-items: center;
            gap: 6px;
            flex-wrap: nowrap;
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: none;
        }
        .header-nav::-webkit-scrollbar {
            display: none;
        }
        .header-nav .nav-icon-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 3px;
            padding: 8px 12px;
            border-radius: var(--radius);
            color: var(--color-text-muted);
            font-size: 0.78rem;
            text-decoration: none;
            transition: all var(--transition-fast);
            white-space: nowrap;
            flex-shrink: 0;
            min-width: 52px;
            text-align: center;
        }
        .header-nav .nav-icon-item i {
            font-size: 1.15rem;
            transition: color var(--transition-fast);
        }
        .header-nav .nav-icon-item:hover {
            color: var(--color-primary);
            background: var(--color-primary-light);
            text-decoration: none;
        }
        .header-nav .nav-icon-item.active {
            color: var(--color-primary);
            background: var(--color-primary-light);
            font-weight: 600;
        }
        .header-nav .nav-icon-item.active i {
            color: var(--color-primary);
        }
        .header-mobile-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--color-text);
            padding: 8px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            flex-shrink: 0;
        }
        .header-mobile-toggle:hover {
            background: var(--color-border-light);
        }

        /* Hero - Creator Profile Style */
        .hero-section {
            background: linear-gradient(180deg, #f0f4ff 0%, var(--color-bg) 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -80px;
            right: -120px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(26, 86, 219, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .hero-profile-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-xl);
            box-shadow: var(--color-shadow-xl);
            padding: 40px;
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            position: relative;
            z-index: 1;
            border: 1px solid var(--color-border-light);
        }
        .hero-avatar-area {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-shrink: 0;
        }
        .hero-avatar {
            width: 96px;
            height: 96px;
            border-radius: var(--radius-full);
            background: linear-gradient(135deg, #1a56db, #4f8bf9);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2.5rem;
            color: #fff;
            box-shadow: 0 8px 28px rgba(26, 86, 219, 0.3);
            flex-shrink: 0;
            overflow: hidden;
        }
        .hero-avatar img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-nickname-area h2 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 4px;
            color: var(--color-text-strong);
            letter-spacing: -0.01em;
        }
        .hero-nickname-area .hero-role {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-role .verified-icon {
            color: var(--color-primary);
            font-size: 0.85rem;
        }
        .hero-badges-row {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            flex: 1;
            justify-content: flex-end;
            min-width: 200px;
        }
        .hero-data-badge {
            text-align: center;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 16px 20px;
            min-width: 90px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
        }
        .hero-data-badge:hover {
            box-shadow: var(--color-shadow);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }
        .hero-data-badge .badge-number {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .hero-data-badge .badge-label {
            font-size: 0.75rem;
            color: var(--color-text-muted);
            margin-top: 4px;
        }
        .hero-cta-row {
            width: 100%;
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            padding-top: 8px;
        }

        /* Pain Point Section */
        .pain-section {
            background: var(--color-bg-white);
            padding: 56px 0;
            border-top: 1px solid var(--color-border-light);
            border-bottom: 1px solid var(--color-border-light);
        }
        .pain-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 24px;
            border: 1px solid #fee2e2;
            background: #fefafa;
            display: flex;
            align-items: flex-start;
            gap: 14px;
            transition: all var(--transition);
            height: 100%;
        }
        .pain-card:hover {
            box-shadow: var(--color-shadow);
            border-color: #fecaca;
        }
        .pain-icon {
            width: 44px;
            height: 44px;
            border-radius: var(--radius);
            background: #fee2e2;
            color: #dc2626;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .pain-card h4 {
            font-size: 1rem;
            font-weight: 600;
            margin-bottom: 4px;
            color: var(--color-text-strong);
        }
        .pain-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }

        /* Solution Section */
        .solution-section {
            background: var(--color-bg);
            padding: 64px 0;
        }
        .solution-feature-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            height: 100%;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .solution-feature-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .solution-feature-card .feature-icon-circle {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.3rem;
            flex-shrink: 0;
        }
        .solution-feature-card h4 {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--color-text-strong);
            margin: 0;
        }
        .solution-feature-card p {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.65;
        }

        /* Stats Tools Section */
        .tools-section {
            background: #fff;
            padding: 64px 0;
            border-top: 1px solid var(--color-border-light);
        }
        .tool-card {
            background: var(--color-bg-white);
            border-radius: var(--radius-lg);
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .tool-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-3px);
        }
        .tool-card-img {
            height: 180px;
            background: var(--color-bg);
            display: flex;
            align-items: center;
            justify-content: center;
            overflow: hidden;
        }
        .tool-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .tool-card-body {
            padding: 22px;
        }
        .tool-card-body h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--color-text-strong);
        }
        .tool-card-body p {
            font-size: 0.88rem;
            color: var(--color-text-muted);
            margin: 0;
            line-height: 1.6;
        }
        .tool-card-body .tool-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            margin-top: 12px;
        }

        /* Chart Showcase */
        .chart-showcase-section {
            background: #f0f4ff;
            padding: 64px 0;
        }
        .chart-demo-card {
            background: #fff;
            border-radius: var(--radius-xl);
            padding: 36px;
            box-shadow: var(--color-shadow-lg);
            border: 1px solid var(--color-border-light);
        }
        .bar-chart-placeholder {
            display: flex;
            align-items: flex-end;
            gap: 14px;
            height: 200px;
            padding: 0 8px;
            flex-wrap: nowrap;
        }
        .bar-item {
            flex: 1;
            background: linear-gradient(180deg, #1a56db 0%, #4f8bf9 100%);
            border-radius: 8px 8px 4px 4px;
            min-width: 28px;
            transition: all var(--transition);
            cursor: pointer;
            position: relative;
            display: flex;
            align-items: flex-end;
            justify-content: center;
            padding-bottom: 6px;
            color: #fff;
            font-size: 0.7rem;
            font-weight: 600;
        }
        .bar-item:hover {
            background: linear-gradient(180deg, #143ea8 0%, #3b6fd4 100%);
            transform: scaleY(1.04);
            transform-origin: bottom;
        }
        .bar-labels {
            display: flex;
            gap: 14px;
            padding: 0 8px;
            margin-top: 10px;
            flex-wrap: nowrap;
        }
        .bar-labels span {
            flex: 1;
            text-align: center;
            font-size: 0.75rem;
            color: var(--color-text-muted);
            min-width: 28px;
        }

        /* Results Section */
        .results-section {
            background: #fff;
            padding: 64px 0;
        }
        .result-stat-card {
            text-align: center;
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            height: 100%;
        }
        .result-stat-card:hover {
            box-shadow: var(--color-shadow-lg);
            border-color: var(--color-border);
            transform: translateY(-2px);
        }
        .result-stat-card .stat-number {
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--color-primary);
            letter-spacing: -0.02em;
            line-height: 1;
        }
        .result-stat-card .stat-label {
            font-size: 0.9rem;
            color: var(--color-text-muted);
            margin-top: 6px;
        }

        /* Testimonials */
        .testimonials-section {
            background: var(--color-bg);
            padding: 64px 0;
        }
        .testimonial-card {
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--color-shadow);
            border: 1px solid var(--color-border-light);
            height: 100%;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--color-shadow-lg);
            transform: translateY(-2px);
        }
        .testimonial-card .quote-icon {
            font-size: 1.8rem;
            color: var(--color-primary-light);
            opacity: 0.6;
            margin-bottom: 8px;
        }
        .testimonial-card p {
            font-size: 0.95rem;
            color: var(--color-text);
            line-height: 1.7;
            margin-bottom: 16px;
            font-style: italic;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .testimonial-author .author-avatar {
            width: 40px;
            height: 40px;
            border-radius: var(--radius-full);
            background: var(--color-primary-light);
            color: var(--color-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .testimonial-author .author-name {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--color-text-strong);
        }
        .testimonial-author .author-tag {
            font-size: 0.75rem;
            color: var(--color-text-muted);
        }

        /* FAQ */
        .faq-section {
            background: #fff;
            padding: 64px 0;
            border-top: 1px solid var(--color-border-light);
        }
        .faq-item {
            background: var(--color-bg);
            border-radius: var(--radius-lg);
            padding: 22px 26px;
            margin-bottom: 12px;
            border: 1px solid var(--color-border-light);
            transition: all var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--color-border);
            box-shadow: var(--color-shadow-sm);
        }
        .faq-item summary {
            font-weight: 600;
            font-size: 1rem;
            color: var(--color-text-strong);
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary .faq-arrow {
            font-size: 0.8rem;
            color: var(--color-text-muted);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }
        .faq-item[open] summary .faq-arrow {
            transform: rotate(180deg);
            color: var(--color-primary);
        }
        .faq-item .faq-answer {
            margin-top: 12px;
            font-size: 0.9rem;
            color: var(--color-text-muted);
            line-height: 1.7;
            padding-top: 12px;
            border-top: 1px solid var(--color-border-light);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1a3a6b 0%, #1a56db 50%, #2563eb 100%);
            padding: 64px 0;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            bottom: -60px;
            right: -80px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .cta-section .cta-content {
            position: relative;
            z-index: 1;
            text-align: center;
            color: #fff;
        }
        .cta-section .cta-content h2 {
            color: #fff;
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-section .cta-content p {
            color: rgba(255, 255, 255, 0.85);
            font-size: 1rem;
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.7;
        }
        .cta-section .btn-cta-white {
            background: #fff;
            color: var(--color-primary);
            font-weight: 700;
            padding: 14px 32px;
            border-radius: var(--radius-lg);
            font-size: 1rem;
            box-shadow: 0 6px 24px rgba(0, 0, 0, 0.2);
            transition: all var(--transition);
        }
        .cta-section .btn-cta-white:hover {
            background: #f0f4ff;
            box-shadow: 0 10px 32px rgba(0, 0, 0, 0.3);
            transform: translateY(-2px);
        }

        /* Footer */
        .site-footer {
            background: #0f172a;
            color: #cbd5e1;
            padding: 48px 0 28px;
            font-size: 0.9rem;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            margin-bottom: 24px;
        }
        .site-footer .footer-brand {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .site-footer h4 {
            color: #e2e8f0;
            font-size: 0.95rem;
            font-weight: 600;
            margin-bottom: 14px;
            letter-spacing: 0.01em;
        }
        .site-footer ul li {
            margin-bottom: 8px;
        }
        .site-footer ul li a {
            color: #94a3b8;
            font-size: 0.85rem;
            transition: color var(--transition-fast);
        }
        .site-footer ul li a:hover {
            color: #fff;
            text-decoration: none;
        }
        .site-footer .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 0.8rem;
            color: #64748b;
        }
        .site-footer .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .site-footer .footer-links a {
            color: #94a3b8;
            font-size: 0.8rem;
        }
        .site-footer .footer-links a:hover {
            color: #fff;
            text-decoration: none;
        }
        .site-footer .footer-links span {
            color: #64748b;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .header-nav .nav-icon-item {
                padding: 6px 8px;
                font-size: 0.7rem;
                gap: 2px;
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
            }
            .hero-profile-card {
                padding: 28px;
                gap: 20px;
            }
            .hero-badges-row {
                justify-content: center;
                flex: 1 1 100%;
            }
            .hero-data-badge {
                min-width: 70px;
                padding: 12px 14px;
            }
            .hero-data-badge .badge-number {
                font-size: 1.3rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .bar-chart-placeholder {
                height: 150px;
                gap: 8px;
            }
            .bar-labels {
                gap: 8px;
            }
        }

        @media (max-width: 768px) {
            .header-nav {
                display: none;
                position: absolute;
                top: var(--nav-height);
                left: 0;
                right: 0;
                background: #fff;
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--color-border);
                box-shadow: var(--color-shadow-lg);
                gap: 2px;
                z-index: 999;
            }
            .header-nav.mobile-open {
                display: flex;
            }
            .header-nav .nav-icon-item {
                flex-direction: row;
                gap: 10px;
                padding: 10px 14px;
                font-size: 0.9rem;
                width: 100%;
                text-align: left;
                justify-content: flex-start;
                border-radius: var(--radius);
            }
            .header-nav .nav-icon-item i {
                font-size: 1rem;
                width: 20px;
                text-align: center;
            }
            .header-mobile-toggle {
                display: block;
            }
            .hero-profile-card {
                flex-direction: column;
                text-align: center;
                padding: 24px;
            }
            .hero-avatar-area {
                flex-direction: column;
                text-align: center;
            }
            .hero-badges-row {
                justify-content: center;
                flex-wrap: wrap;
            }
            .hero-cta-row {
                justify-content: center;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .section {
                padding: 40px 0;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .site-footer .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .site-footer .footer-links {
                justify-content: center;
            }
            .bar-chart-placeholder {
                height: 120px;
                gap: 6px;
            }
            .bar-labels {
                gap: 6px;
            }
            .bar-labels span {
                font-size: 0.65rem;
            }
            .chart-demo-card {
                padding: 20px;
            }
        }

        @media (max-width: 520px) {
            .hero-avatar {
                width: 72px;
                height: 72px;
                font-size: 1.8rem;
            }
            .hero-nickname-area h2 {
                font-size: 1.2rem;
            }
            .hero-data-badge {
                min-width: 60px;
                padding: 10px 10px;
            }
            .hero-data-badge .badge-number {
                font-size: 1.1rem;
            }
            .hero-data-badge .badge-label {
                font-size: 0.68rem;
            }
            .btn {
                padding: 10px 18px;
                font-size: 0.85rem;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 18px;
            }
            .container {
                padding: 0 16px;
            }
            .bar-chart-placeholder {
                height: 100px;
                gap: 4px;
            }
            .bar-labels {
                gap: 4px;
            }
            .bar-labels span {
                font-size: 0.6rem;
            }
            .bar-item {
                font-size: 0.6rem;
                min-width: 20px;
                border-radius: 5px 5px 3px 3px;
            }
        }