/* roulang page: index */
:root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all var(--transition-smooth);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 32px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text-primary);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero Section - Industrial Parameter */
        .hero-section {
            padding: 150px 0 90px;
            background: linear-gradient(180deg, rgba(8, 18, 41, 0.6) 0%, var(--primary-bg) 100%);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -150px;
            width: 700px;
            height: 700px;
            background: radial-gradient(circle, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 750;
            letter-spacing: -0.02em;
            line-height: 1.18;
            margin-bottom: 22px;
            color: var(--text-primary);
            background: linear-gradient(135deg, #F8FAFC 30%, #60A5FA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-subtitle {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 22px;
            max-width: 540px;
        }

        .hero-metrics {
            display: flex;
            gap: 28px;
            margin-bottom: 28px;
            flex-wrap: wrap;
        }

        .metric-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            color: var(--text-holo);
            font-weight: 550;
        }

        .metric-dot {
            width: 10px;
            height: 10px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.6);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        .hero-cta-group {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFF;
            padding: 13px 32px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
            letter-spacing: 0.01em;
        }

        .btn-primary:hover {
            box-shadow: 0 0 36px rgba(37, 99, 235, 0.65);
            transform: translateY(-2px);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
        }

        .hero-visual-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-chamfer);
            padding: 28px 26px;
            position: relative;
            box-shadow: var(--shadow-card);
            width: 100%;
            max-width: 460px;
        }

        .hero-visual-card .chart-bars {
            display: flex;
            align-items: flex-end;
            gap: 14px;
            height: 140px;
            padding: 10px 0;
        }

        .chart-bar {
            flex: 1;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
            border-radius: 6px 6px 2px 2px;
            min-height: 30px;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 14px rgba(56, 189, 248, 0.2);
            position: relative;
        }

        .chart-bar:nth-child(1) { height: 50%; }
        .chart-bar:nth-child(2) { height: 70%; }
        .chart-bar:nth-child(3) { height: 45%; }
        .chart-bar:nth-child(4) { height: 85%; }
        .chart-bar:nth-child(5) { height: 55%; }
        .chart-bar:nth-child(6) { height: 90%; }
        .chart-bar:nth-child(7) { height: 62%; }

        .chart-label {
            font-size: 0.75rem;
            color: var(--text-holo);
            text-align: center;
            margin-top: 10px;
            font-weight: 500;
        }

        .live-indicator {
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 16px;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .live-dot {
            width: 8px;
            height: 8px;
            background: #22D3EE;
            border-radius: 50%;
            animation: pulse-live 1.4s infinite;
        }

        @keyframes pulse-live {
            0%, 100% { box-shadow: 0 0 4px #22D3EE; }
            50% { box-shadow: 0 0 16px #22D3EE, 0 0 24px rgba(34, 211, 238, 0.5); }
        }

        /* Section Common */
        .section {
            padding: 70px 0;
        }

        .section-header {
            margin-bottom: 48px;
            display: flex;
            align-items: flex-start;
            gap: 20px;
            flex-wrap: wrap;
        }

        .section-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.15);
            color: var(--accent-cyan);
            font-size: 0.78rem;
            font-weight: 650;
            padding: 5px 14px;
            border-radius: 50px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            border: 1px solid var(--border-subtle);
            white-space: nowrap;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            line-height: 1.25;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.7;
            max-width: 720px;
        }

        /* Directory Cards */
        .directory-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: 22px;
        }

        .directory-card {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-chamfer);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(8px);
        }

        .directory-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 3px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 0 2px 2px 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .directory-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 8px 28px rgba(37, 99, 235, 0.2);
            transform: translateY(-4px);
        }

        .directory-card:hover::before {
            opacity: 1;
        }

        .directory-card h3 {
            font-size: 1.15rem;
            font-weight: 650;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .directory-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .directory-icon {
            font-size: 2rem;
            margin-bottom: 14px;
            color: var(--accent-cyan);
        }

        /* Info Cards */
        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 24px;
        }

        .info-card {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: all var(--transition-smooth);
            backdrop-filter: blur(8px);
            position: relative;
        }

        .info-card:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-card);
        }

        .info-card .card-number {
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 10px;
        }

        .info-card h4 {
            font-size: 1.15rem;
            font-weight: 650;
            margin-bottom: 8px;
        }

        .info-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Table */
        .comparison-table-wrap {
            overflow-x: auto;
            margin: 0 -10px;
            padding: 0 10px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 680px;
            font-size: 0.92rem;
        }

        .comparison-table th {
            text-align: left;
            padding: 16px 18px;
            background: rgba(37, 99, 235, 0.12);
            color: var(--text-holo);
            font-weight: 650;
            border-bottom: 2px solid var(--border-subtle);
            white-space: nowrap;
        }

        .comparison-table td {
            padding: 15px 18px;
            border-bottom: 1px solid rgba(37, 99, 235, 0.1);
            color: var(--text-secondary);
        }

        .comparison-table tr:hover td {
            background: rgba(37, 99, 235, 0.04);
        }

        .comparison-table .highlight-col {
            background: rgba(37, 99, 235, 0.08);
        }

        .comparison-table .highlight-col td {
            color: var(--text-primary);
            font-weight: 550;
        }

        .badge-recommend {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFF;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.03em;
        }

        /* Coupon Wall */
        .coupon-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
            gap: 18px;
        }

        .coupon-card {
            background: var(--card-glass);
            border: 1px dashed var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 22px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .coupon-card::after {
            content: '';
            position: absolute;
            top: -20px;
            right: -20px;
            width: 60px;
            height: 60px;
            background: rgba(37, 99, 235, 0.2);
            border-radius: 50%;
            pointer-events: none;
        }

        .coupon-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .coupon-value {
            font-size: 2.2rem;
            font-weight: 750;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 6px;
        }

        .coupon-condition {
            font-size: 0.8rem;
            color: var(--text-secondary);
            margin-bottom: 14px;
        }

        .coupon-expiry {
            font-size: 0.75rem;
            color: var(--text-holo);
            opacity: 0.7;
        }

        .btn-coupon {
            display: inline-block;
            background: var(--accent-blue);
            color: #FFF;
            padding: 8px 20px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-top: 8px;
            transition: all var(--transition-smooth);
        }

        .btn-coupon:hover {
            background: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }

        /* Quick FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            color: var(--text-primary);
            padding: 18px 22px;
            font-size: 1rem;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            border: none;
        }

        .faq-answer {
            padding: 0 22px 18px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.65;
            display: none;
        }

        .faq-item.open .faq-answer {
            display: block;
        }

        .faq-item.open {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(56, 189, 248, 0.15);
        }

        .faq-icon {
            font-size: 1.3rem;
            transition: transform var(--transition-fast);
            color: var(--accent-cyan);
        }

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

        /* Content List */
        .content-list-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 30px;
        }

        .content-list-main {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .content-list-item {
            display: flex;
            align-items: center;
            gap: 18px;
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 20px;
            transition: all var(--transition-smooth);
        }

        .content-list-item:hover {
            border-color: var(--accent-blue);
            box-shadow: var(--shadow-card);
        }

        .content-list-item .thumb {
            width: 80px;
            height: 60px;
            border-radius: var(--radius-sm);
            object-fit: cover;
            flex-shrink: 0;
            background: var(--secondary-bg);
        }

        .content-list-item .item-info {
            flex: 1;
        }

        .content-list-item .item-title {
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .content-list-item .item-meta {
            font-size: 0.78rem;
            color: var(--text-secondary);
        }

        .content-sidebar {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            height: fit-content;
            backdrop-filter: blur(8px);
        }

        .content-sidebar h5 {
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 14px;
            color: var(--text-holo);
        }

        .sidebar-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .sidebar-list a {
            font-size: 0.88rem;
            color: var(--text-secondary);
            padding: 6px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: color var(--transition-fast);
            display: block;
        }

        .sidebar-list a:hover {
            color: var(--accent-cyan);
        }

        /* Platform Assurance */
        .assurance-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
            gap: 20px;
        }

        .assurance-item {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 26px 20px;
            text-align: left;
            transition: all var(--transition-smooth);
        }

        .assurance-item:hover {
            border-color: var(--accent-blue);
        }

        .assurance-icon {
            width: 44px;
            height: 44px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            margin-bottom: 12px;
            color: var(--accent-cyan);
        }

        .assurance-item h5 {
            font-weight: 650;
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

        .assurance-item p {
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* Trust Bar */
        .trust-bar {
            display: flex;
            align-items: center;
            gap: 18px;
            flex-wrap: wrap;
            padding: 18px 24px;
            background: rgba(37, 99, 235, 0.08);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-top: 30px;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        .trust-bar span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .trust-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-cyan);
            padding: 3px 10px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.75rem;
        }

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            padding: 50px 0 26px;
            margin-top: 50px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
            gap: 32px;
            margin-bottom: 30px;
        }

        .footer-col h6 {
            font-size: 0.9rem;
            font-weight: 650;
            color: var(--text-holo);
            margin-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 7px;
        }

        .footer-col ul a {
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 18px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .footer-bottom .brand-name {
            color: var(--text-holo);
            font-weight: 600;
        }

        .footer-badges {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 8px;
            justify-content: center;
        }

        /* FAB */
        .fab-cyber {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.82);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #A3E635, #06B6D4) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: #22D3EE;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(6, 182, 212, 0.4);
            transition: all var(--transition-smooth);
            animation: fab-breathe 2.6s ease-in-out infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        .fab-cyber:hover {
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.65);
            transform: scale(1.08);
        }

        .fab-badge {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #F43F5E;
            border-radius: 50%;
            border: 2px solid #07070D;
            animation: pulse-live 1.2s infinite;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }

            .hero-content h1 {
                font-size: 2.2rem;
            }

            .content-list-grid {
                grid-template-columns: 1fr;
            }

            .content-sidebar {
                order: -1;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }

            .main-nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.96);
                backdrop-filter: blur(20px);
                padding: 20px 24px;
                gap: 10px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 999;
            }

            .mobile-toggle {
                display: block;
            }

            .header-inner {
                gap: 16px;
            }

            .hero-section {
                padding: 120px 0 60px;
            }

            .hero-content h1 {
                font-size: 1.8rem;
            }

            .section-title {
                font-size: 1.5rem;
            }

            .directory-grid {
                grid-template-columns: 1fr;
            }

            .coupon-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .content-list-item {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .hero-metrics {
                flex-direction: column;
                gap: 10px;
            }

            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .btn-primary {
                width: 100%;
                text-align: center;
            }

            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }

            .coupon-grid {
                grid-template-columns: 1fr;
            }

            .assurance-grid {
                grid-template-columns: 1fr;
            }

            .fab-cyber {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all var(--transition-smooth);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 32px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text-primary);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px;
            line-height: 1;
        }

        .main-content {
            padding-top: 68px;
        }

        .article-hero {
            background: linear-gradient(180deg, rgba(8, 18, 41, 0.95) 0%, rgba(3, 7, 18, 0.98) 100%);
            border-bottom: 1px solid var(--border-subtle);
            padding: 48px 0 40px;
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), var(--accent-blue), transparent);
            opacity: 0.5;
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
        }

        .article-category-badge {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            color: var(--text-holo);
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
        }

        .article-hero h1 {
            font-size: 2.5rem;
            font-weight: 750;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.02em;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            color: var(--text-secondary);
            font-size: 0.9rem;
            flex-wrap: wrap;
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-body-wrapper {
            padding: 48px 0 60px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 48px;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

        .article-featured-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 36px;
            border: 1px solid var(--border-subtle);
            position: relative;
        }

        .article-featured-image img {
            width: 100%;
            height: auto;
            object-fit: cover;
        }

        .article-content {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-content h2 {
            font-size: 1.75rem;
            color: var(--text-primary);
            margin: 40px 0 16px;
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        .article-content h3 {
            font-size: 1.35rem;
            color: var(--text-primary);
            margin: 32px 0 12px;
            font-weight: 650;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content ul, .article-content ol {
            margin: 16px 0 24px 24px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content blockquote {
            border-left: 3px solid var(--accent-blue);
            padding: 16px 24px;
            margin: 28px 0;
            background: var(--card-bg);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-holo);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
        }

        .article-content strong {
            color: var(--text-primary);
            font-weight: 650;
        }

        .article-sidebar {
            position: sticky;
            top: 88px;
        }

        .sidebar-card {
            background: var(--card-glass);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            margin-bottom: 20px;
        }

        .sidebar-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
        }

        .sidebar-card ul {
            list-style: none;
        }

        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(37, 99, 235, 0.1);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .sidebar-card ul li a {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
        }

        .sidebar-card ul li a i {
            font-size: 0.7rem;
            color: var(--accent-blue);
        }

        .sidebar-promo-card {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-md);
            padding: 24px;
            color: #FFFFFF;
            position: relative;
            overflow: hidden;
        }

        .sidebar-promo-card::before {
            content: '';
            position: absolute;
            top: -30px;
            right: -30px;
            width: 100px;
            height: 100px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 50%;
        }

        .sidebar-promo-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .sidebar-promo-card p {
            font-size: 0.9rem;
            opacity: 0.95;
            margin-bottom: 16px;
            line-height: 1.5;
        }

        .sidebar-promo-card .btn-sidebar-cta {
            display: inline-block;
            background: #FFFFFF;
            color: var(--accent-blue);
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .sidebar-promo-card .btn-sidebar-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .article-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-top: 36px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
        }

        .article-tags span {
            padding: 6px 14px;
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid rgba(37, 99, 235, 0.2);
            border-radius: 50px;
            font-size: 0.8rem;
            color: var(--text-holo);
            font-weight: 500;
        }

        .related-articles {
            padding: 48px 0 60px;
            background: rgba(8, 18, 41, 0.4);
        }

        .related-articles h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 32px;
            letter-spacing: -0.01em;
        }

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .related-card {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.2);
        }

        .related-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }

        .related-card-body {
            padding: 16px;
        }

        .related-card-body h3 {
            font-size: 1rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .article-cta-strip {
            background: linear-gradient(180deg, rgba(8, 18, 41, 0.9), var(--secondary-bg));
            padding: 48px 0;
            text-align: center;
            border-top: 1px solid var(--border-subtle);
        }

        .cta-box {
            background: var(--card-glass);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            max-width: 700px;
            margin: 0 auto;
            box-shadow: 0 0 32px rgba(37, 99, 235, 0.15);
        }

        .cta-box h2 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .btn-primary-glow {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 13px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.4);
            transition: all var(--transition-smooth);
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 36px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        .not-found-section {
            padding: 80px 0;
            text-align: center;
        }

        .not-found-section h2 {
            font-size: 2rem;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .not-found-section p {
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .site-footer {
            background: rgba(8, 18, 41, 0.8);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h6 {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

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

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(37, 99, 235, 0.15);
        }

        .footer-badges {
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 12px;
        }

        .trust-badge {
            padding: 6px 16px;
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid rgba(37, 99, 235, 0.25);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-holo);
            letter-spacing: 0.04em;
        }

        .footer-bottom p {
            color: var(--text-secondary);
            font-size: 0.8rem;
            line-height: 1.5;
        }

        .fab-cta {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FFFFFF;
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: float-glow 3s ease-in-out infinite;
        }

        .fab-cta:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.7);
        }

        @keyframes float-glow {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-hero h1 {
                font-size: 2rem;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .header-actions .btn-login {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .article-hero h1 {
                font-size: 1.6rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 24px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-content {
                font-size: 0.95rem;
            }
            .fab-cta {
                width: 48px;
                height: 48px;
                left: 16px;
                bottom: 80px;
                font-size: 1.3rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .header-inner {
                height: 60px;
            }
            .logo-brand {
                font-size: 1.1rem;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 1rem;
            }
            .article-hero h1 {
                font-size: 1.4rem;
            }
            .cta-box {
                padding: 28px 20px;
            }
            .cta-box h2 {
                font-size: 1.3rem;
            }
        }

/* roulang page: category1 */
/* ===== Design System Continuation ===== */
        :root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all var(--transition-smooth);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* ===== Header & Navigation ===== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 32px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text-primary);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px;
        }

        /* ===== Category Hero Section ===== */
        .category-hero {
            padding: 140px 0 80px;
            background: linear-gradient(180deg, rgba(8, 18, 41, 0.95) 0%, rgba(3, 7, 18, 0.98) 100%);
            border-bottom: 1px solid var(--border-subtle);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-content-left h1 {
            font-size: 3.2rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, var(--text-primary) 0%, var(--accent-cyan) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content-left .hero-subtitle {
            font-size: 1.2rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 30px;
        }

        .hero-benefits {
            list-style: none;
            padding: 0;
            margin: 0 0 30px 0;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .hero-benefits li {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .hero-benefits li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        .hero-trust {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 25px;
            padding-top: 25px;
            border-top: 1px solid var(--border-subtle);
        }

        .hero-trust .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-holo);
        }

        .hero-trust .trust-item i {
            font-size: 1.3rem;
        }

        .hero-image-right {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-image-right img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 60px rgba(37, 99, 235, 0.3);
            filter: brightness(1.1);
        }

        /* ===== Category Metrics Panel ===== */
        .metrics-panel {
            background: var(--card-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px;
            margin-top: -40px;
            position: relative;
            z-index: 10;
            box-shadow: var(--shadow-card);
        }

        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            text-align: center;
        }

        .metric-item .metric-value {
            font-size: 2.5rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .metric-item .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 8px;
        }

        /* ===== Service Matrix ===== */
        .section-block {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 750;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
        }

        .game-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .game-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
        }

        .game-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(37, 99, 235, 0.3);
            border-color: var(--border-glow);
        }

        .game-card-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }

        .game-card-body {
            padding: 16px;
        }

        .game-card-body h5 {
            font-size: 1.1rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .game-card-body .game-desc {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            margin-bottom: 12px;
        }

        .game-card-tags {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
        }

        .game-tag {
            background: rgba(37, 99, 235, 0.2);
            color: var(--text-holo);
            padding: 3px 10px;
            border-radius: 50px;
            font-size: 0.78rem;
            font-weight: 500;
            border: 1px solid var(--border-subtle);
        }

        /* ===== Comparison Table ===== */
        .comparison-section {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            padding: 50px;
            margin: 0 0 80px;
        }

        .comparison-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 40px;
        }

        .comparison-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 30px;
        }

        .comparison-card.highlight {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(56, 189, 248, 0.2);
        }

        .comparison-card h4 {
            font-size: 1.4rem;
            font-weight: 650;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .comparison-list {
            list-style: none;
            padding: 0;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255,255,255,0.05);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .comparison-list li i.fa-check {
            color: #10B981;
        }

        .comparison-list li i.fa-times {
            color: #EF4444;
        }

        /* ===== Milestone Timeline ===== */
        .timeline-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .timeline-item {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            position: relative;
            transition: all var(--transition-smooth);
        }

        .timeline-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
        }

        .timeline-step {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 10px;
        }

        .timeline-item h5 {
            font-size: 1.1rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .timeline-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== Platform Security ===== */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .security-card {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            text-align: center;
            transition: all var(--transition-smooth);
        }

        .security-card:hover {
            border-color: var(--accent-cyan);
        }

        .security-icon {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .security-card h5 {
            font-size: 1.05rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 8px;
        }

        .security-card p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-list {
            display: grid;
            gap: 16px;
        }

        .faq-item {
            background: var(--card-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
        }

        .faq-item h5 {
            font-size: 1.1rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h5 i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        .faq-item .faq-answer {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            padding-left: 30px;
        }

        /* ===== CTA Section ===== */
        .cta-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 60px 50px;
            text-align: center;
        }

        .cta-section h3 {
            font-size: 2rem;
            font-weight: 750;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 30px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-large {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 14px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: var(--shadow-glow);
            display: inline-block;
        }

        .btn-cta-large:hover {
            box-shadow: 0 0 36px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
            margin-bottom: 40px;
        }

        .footer-col h6 {
            font-size: 1rem;
            font-weight: 650;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255,255,255,0.05);
        }

        .footer-badges {
            display: flex;
            justify-content: center;
            gap: 16px;
            margin-bottom: 12px;
        }

        .trust-badge {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-holo);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid var(--border-subtle);
        }

        .footer-bottom p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            max-width: 700px;
            margin: 0 auto;
        }

        .brand-name {
            color: var(--text-primary);
            font-weight: 600;
        }

        /* ===== Responsive ===== */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .game-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .timeline-list {
                grid-template-columns: 1fr;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-content-left h1 {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
                gap: 16px;
            }
            .main-nav.mobile-open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 7px 14px;
                font-size: 0.82rem;
            }
            .game-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: 1fr;
            }
            .category-hero {
                padding: 110px 0 60px;
            }
            .metrics-panel {
                padding: 24px;
            }
            .comparison-section {
                padding: 30px 20px;
            }
        }

        @media (max-width: 520px) {
            .game-grid {
                grid-template-columns: 1fr;
            }
            .hero-content-left h1 {
                font-size: 1.8rem;
            }
            .hero-benefits {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .cta-section {
                padding: 40px 20px;
            }
            .cta-section h3 {
                font-size: 1.6rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all var(--transition-smooth);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 32px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text-primary);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px;
        }

        main {
            padding-top: 68px;
        }

        .page-hero {
            position: relative;
            padding: 80px 0 60px;
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 480px;
            display: flex;
            align-items: center;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(3,7,18,0.88) 0%, rgba(8,18,41,0.78) 60%, rgba(3,7,18,0.95) 100%);
            z-index: 1;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            max-width: 680px;
        }

        .hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 0%, #60A5FA 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-content .subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .hero-cta-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-holo);
            border: 1.5px solid rgba(96, 165, 250, 0.5);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .section-block {
            padding: 70px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 750;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 40px;
            max-width: 720px;
        }

        .glass-card {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: all var(--transition-smooth);
        }

        .glass-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.2);
            transform: translateY(-4px);
        }

        .step-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .step-card {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all var(--transition-smooth);
            display: flex;
            gap: 20px;
            align-items: flex-start;
        }

        .step-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.18);
        }

        .step-number {
            width: 48px;
            height: 48px;
            min-width: 48px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            color: #FFFFFF;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
        }

        .step-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-primary);
        }

        .step-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .device-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .device-card {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            text-align: left;
            transition: all var(--transition-smooth);
        }

        .device-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.25);
            transform: translateY(-6px);
        }

        .device-icon {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .device-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .device-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .benefit-list {
            list-style: none;
            padding: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
            margin-top: 24px;
        }

        .benefit-list li {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            padding: 10px 16px;
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
        }

        .benefit-list li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .info-stat {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            transition: all var(--transition-smooth);
        }

        .info-stat:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.18);
        }

        .info-stat .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 8px;
        }

        .info-stat p {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
            margin-top: 32px;
        }

        .faq-item {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 650;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .cta-banner {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.12));
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: left;
            margin-top: 40px;
        }

        .cta-banner h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-banner p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 28px;
            line-height: 1.7;
        }

        .posts-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 32px;
        }

        .post-card {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .post-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.2);
            transform: translateY(-4px);
        }

        .post-card-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            background: var(--secondary-bg);
        }

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

        .post-card-body h5 {
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .post-card-body .post-meta {
            font-size: 0.8rem;
            color: var(--text-holo);
            margin-bottom: 8px;
        }

        .post-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .site-footer {
            background: rgba(8, 18, 41, 0.85);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 32px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h6 {
            font-size: 0.95rem;
            font-weight: 650;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

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

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

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

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
        }

        .footer-badges {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 12px;
            flex-wrap: wrap;
        }

        .trust-badge {
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-holo);
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(3, 7, 18, 0.8);
            backdrop-filter: blur(14px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) 1;
            border-radius: 16px 4px 16px 4px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            cursor: pointer;
            transition: all var(--transition-smooth);
            animation: fabPulse 3s ease-in-out infinite;
        }

        .fab-left:hover {
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
            transform: scale(1.1);
            border-image: linear-gradient(135deg, #EC4899, var(--accent-cyan)) 1;
            color: #EC4899;
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.75; }
            50% { opacity: 1; }
        }

        @media (max-width: 1024px) {
            .step-grid, .device-grid, .faq-grid {
                grid-template-columns: 1fr;
            }
            .info-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .posts-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .hero-content h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
            }
            .mobile-toggle {
                display: block;
            }
            .header-actions .btn-login,
            .header-actions .btn-signup {
                padding: 8px 16px;
                font-size: 0.85rem;
            }
            .hero-content h1 {
                font-size: 1.8rem;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .posts-grid {
                grid-template-columns: 1fr;
            }
            .benefit-list {
                grid-template-columns: 1fr;
            }
            .step-card {
                flex-direction: column;
            }
            .container {
                padding: 0 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .fab-left {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 12px;
            }
            .logo-brand {
                font-size: 1.1rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary, .btn-outline {
                justify-content: center;
                width: 100%;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all var(--transition-smooth);
        }

        .container {
            width: 100%;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-smooth);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 32px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 750;
            font-size: 1.35rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 8px 2px;
            position: relative;
            transition: color var(--transition-fast);
            white-space: nowrap;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth);
            border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active {
            color: var(--text-primary);
        }

        .main-nav a:hover::after, .main-nav a.active::after {
            width: 100%;
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 9px 22px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 0.9rem;
            box-shadow: var(--shadow-glow);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero */
        .hero-section {
            padding: 140px 0 80px;
            position: relative;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(3,7,18,0.92) 20%, rgba(8,18,41,0.78) 60%, rgba(3,7,18,0.9) 100%);
            z-index: 1;
        }

        .hero-section .container {
            position: relative;
            z-index: 2;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 3.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            line-height: 1.15;
            margin-bottom: 24px;
            background: linear-gradient(135deg, var(--text-primary) 20%, var(--accent-cyan) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-text p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-stats {
            display: flex;
            gap: 32px;
            margin-bottom: 36px;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 750;
            color: var(--accent-cyan);
            line-height: 1;
        }

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

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 650;
            font-size: 1rem;
            box-shadow: var(--shadow-glow);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 0 32px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline {
            background: transparent;
            color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .progress-ring-container {
            position: relative;
            width: 280px;
            height: 280px;
        }

        .progress-ring-bg {
            fill: none;
            stroke: rgba(37, 99, 235, 0.15);
            stroke-width: 12;
        }

        .progress-ring-fill {
            fill: none;
            stroke: url(#progressGradient);
            stroke-width: 12;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.5s ease;
            transform: rotate(-90deg);
            transform-origin: 50% 50%;
        }

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

        .progress-percent {
            font-size: 3.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .progress-target {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* Section common */
        .section-padding {
            padding: 80px 0;
        }

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

        .section-tag {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 650;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            color: var(--accent-cyan);
            background: rgba(56, 189, 248, 0.1);
            border: 1px solid rgba(56, 189, 248, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-header h2 {
            font-size: 2.4rem;
            font-weight: 750;
            letter-spacing: -0.015em;
            line-height: 1.25;
            margin-bottom: 14px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 640px;
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .metric-card {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .metric-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-4px);
        }

        .metric-card:hover::before {
            opacity: 1;
        }

        .metric-icon {
            font-size: 2rem;
            margin-bottom: 12px;
        }

        .metric-value {
            font-size: 2.2rem;
            font-weight: 750;
            color: var(--accent-cyan);
            line-height: 1.1;
            margin-bottom: 6px;
        }

        .metric-label {
            font-size: 0.9rem;
            color: var(--text-secondary);
        }

        /* Strategy Cards */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .strategy-card {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-chamfer);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            position: relative;
        }

        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.2);
            transform: translateY(-6px);
        }

        .strategy-number {
            font-size: 3.5rem;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.15);
            position: absolute;
            top: 16px;
            right: 20px;
        }

        .strategy-icon {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: 20px;
        }

        .strategy-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 10px;
            letter-spacing: -0.01em;
        }

        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        .strategy-tag {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--accent-cyan);
            background: rgba(56, 189, 248, 0.1);
            padding: 3px 10px;
            border-radius: 4px;
            margin-top: 14px;
        }

        /* Comparison Table */
        .comparison-wrap {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 40px;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
        }

        .comparison-table th {
            text-align: left;
            padding: 16px 20px;
            font-size: 0.85rem;
            font-weight: 650;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--accent-cyan);
            border-bottom: 1px solid var(--border-subtle);
        }

        .comparison-table td {
            padding: 16px 20px;
            font-size: 0.95rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(37, 99, 235, 0.08);
        }

        .comparison-table tr:last-child td {
            border-bottom: none;
        }

        .comparison-table .col-highlight {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .badge-win {
            display: inline-block;
            background: rgba(16, 185, 129, 0.15);
            color: #10B981;
            font-size: 0.8rem;
            font-weight: 650;
            padding: 4px 10px;
            border-radius: 4px;
        }

        .badge-risk {
            display: inline-block;
            background: rgba(245, 158, 11, 0.15);
            color: #F59E0B;
            font-size: 0.8rem;
            font-weight: 650;
            padding: 4px 10px;
            border-radius: 4px;
        }

        /* Milestone Timeline */
        .timeline-list {
            display: flex;
            flex-direction: column;
            gap: 0;
            padding-left: 0;
            list-style: none;
        }

        .timeline-item {
            display: flex;
            gap: 24px;
            padding: 24px 0;
            border-left: 2px solid var(--border-subtle);
            padding-left: 32px;
            position: relative;
            transition: border-color var(--transition-smooth);
        }

        .timeline-item:hover {
            border-left-color: var(--accent-cyan);
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -7px;
            top: 30px;
            width: 12px;
            height: 12px;
            background: var(--accent-blue);
            border: 2px solid var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.5);
        }

        .timeline-order {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
            min-width: 40px;
        }

        .timeline-content h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .timeline-content p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Article list */
        .article-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .article-card {
            display: flex;
            gap: 20px;
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
        }

        .article-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.2);
            transform: translateX(4px);
        }

        .article-card-img {
            width: 100px;
            height: 100px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
        }

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

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

        .article-card-body {
            flex: 1;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .article-card-body h5 {
            font-size: 1rem;
            font-weight: 650;
            margin-bottom: 6px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-body .article-meta {
            font-size: 0.8rem;
            color: var(--text-secondary);
            display: flex;
            gap: 12px;
            align-items: center;
        }

        /* Trust / Safety */
        .trust-row {
            display: flex;
            gap: 60px;
            align-items: center;
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
        }

        .trust-icons {
            display: flex;
            gap: 28px;
            flex-shrink: 0;
        }

        .trust-icon-item {
            text-align: center;
        }

        .trust-icon-circle {
            width: 64px;
            height: 64px;
            border-radius: 50%;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border: 2px solid var(--border-glow);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.8rem;
            margin: 0 auto 8px;
        }

        .trust-icon-label {
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.04em;
            color: var(--text-secondary);
        }

        .trust-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .trust-text p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .faq-item {
            background: var(--card-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.15);
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 8px;
            letter-spacing: -0.005em;
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* CTA */
        .cta-section {
            padding: 80px 0;
        }

        .cta-box {
            background: var(--secondary-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            background-image: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.12) 0%, transparent 60%);
        }

        .cta-box h3 {
            font-size: 2rem;
            font-weight: 750;
            letter-spacing: -0.015em;
            margin-bottom: 14px;
        }

        .cta-box p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 28px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-col h6 {
            font-size: 0.9rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }

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

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

        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-col a:hover {
            color: var(--text-holo);
        }

        .footer-bottom {
            border-top: 1px solid rgba(37, 99, 235, 0.12);
            padding-top: 24px;
            text-align: center;
        }

        .footer-badges {
            display: flex;
            gap: 16px;
            justify-content: center;
            margin-bottom: 12px;
        }

        .trust-badge {
            display: inline-block;
            font-size: 0.75rem;
            font-weight: 650;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 6px 14px;
            border-radius: 50px;
            border: 1px solid var(--border-subtle);
            background: rgba(37, 99, 235, 0.08);
            color: var(--text-holo);
        }

        .footer-bottom p {
            font-size: 0.82rem;
            color: var(--text-secondary);
        }

        .brand-name {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        /* FAB */
        .fab-btn {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 900;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid var(--border-glow);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            opacity: 0.75;
            animation: fabPulse 2.5s infinite;
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(6, 182, 212, 0.65);
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #FFFFFF;
            animation: fabBlink 1.2s infinite;
        }

        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(6, 182, 212, 0.45); }
            50% { box-shadow: 0 0 28px rgba(6, 182, 212, 0.7); }
        }

        @keyframes fabBlink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.4; }
        }

        /* Empty state */
        .empty-list {
            text-align: center;
            padding: 40px;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text h1 {
                font-size: 2.6rem;
            }
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .trust-row {
                flex-direction: column;
                text-align: center;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.95);
                backdrop-filter: blur(20px);
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-subtle);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr 1fr;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .article-list {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 28px;
            }
            .comparison-wrap {
                padding: 20px;
                overflow-x: auto;
            }
            .comparison-table {
                min-width: 600px;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 16px;
            }
            .logo-brand {
                font-size: 1.1rem;
            }
            .btn-login, .btn-signup {
                padding: 8px 14px;
                font-size: 0.78rem;
            }
            .hero-section {
                padding: 120px 0 60px;
            }
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-stats {
                gap: 16px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-box {
                padding: 36px 20px;
            }
            .cta-box h3 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #030712;
            --secondary-bg: #081229;
            --card-bg: rgba(14, 22, 48, 0.7);
            --card-glass: rgba(20, 28, 56, 0.65);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-electric: #3B82F6;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-subtle: rgba(37, 99, 235, 0.25);
            --border-glow: rgba(56, 189, 248, 0.45);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.35);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.5);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-chamfer: 10px 2px 10px 2px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-sans: 'Inter', 'SF Pro Display', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
        }

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

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

        body {
            font-family: var(--font-sans);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
            background-image: 
                radial-gradient(ellipse at 20% 10%, rgba(37, 99, 235, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 90%, rgba(56, 189, 248, 0.06) 0%, transparent 55%),
                radial-gradient(ellipse at 50% 50%, rgba(37, 99, 235, 0.03) 0%, transparent 70%);
        }

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

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

        button, .btn {
            cursor: pointer; border: none; outline: none;
            font-family: inherit; transition: all var(--transition-smooth);
        }

        .container { width: 100%; max-width: 1280px; margin: 0 auto; padding: 0 24px; }

        .site-header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
            background: rgba(3, 7, 18, 0.82);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .header-inner {
            display: flex; align-items: center; justify-content: space-between;
            height: 68px; gap: 32px;
        }

        .logo-brand {
            display: flex; align-items: center; gap: 10px;
            font-weight: 750; font-size: 1.35rem; letter-spacing: -0.01em;
            color: var(--text-primary); white-space: nowrap;
        }

        .logo-icon {
            width: 38px; height: 38px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-sm);
            display: flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.2rem; color: #FFFFFF;
            box-shadow: 0 0 18px rgba(37, 99, 235, 0.5);
        }

        .main-nav {
            display: flex; align-items: center; gap: 28px;
            list-style: none;
        }

        .main-nav a {
            font-size: 0.95rem; font-weight: 500; color: var(--text-secondary);
            padding: 8px 2px; position: relative;
            transition: color var(--transition-fast); white-space: nowrap;
        }

        .main-nav a::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width var(--transition-smooth); border-radius: 2px;
        }

        .main-nav a:hover, .main-nav a.active { color: var(--text-primary); }
        .main-nav a:hover::after, .main-nav a.active::after { width: 100%; }

        .header-actions { display: flex; align-items: center; gap: 14px; flex-shrink: 0; }

        .btn-login {
            background: transparent; color: var(--text-holo);
            border: 1px solid rgba(96, 165, 250, 0.4);
            padding: 9px 20px; border-radius: 50px; font-weight: 600; font-size: 0.9rem;
        }
        .btn-login:hover {
            border-color: var(--accent-cyan); color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.25);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF; padding: 9px 22px; border-radius: 50px;
            font-weight: 650; font-size: 0.9rem; box-shadow: var(--shadow-glow);
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.55);
            transform: translateY(-1px);
        }

        .mobile-toggle { display: none; background: none; border: none; color: var(--text-primary); font-size: 1.8rem; }

        main { padding-top: 68px; }

        .page-hero {
            padding: 80px 0 70px;
            background-image: url('/assets/images/backpic/back-6.jpg');
            background-size: cover; background-position: center;
            position: relative;
        }
        .page-hero::before {
            content: ''; position: absolute; inset: 0;
            background: linear-gradient(135deg, rgba(3,7,18,0.88) 0%, rgba(8,18,41,0.75) 100%);
        }
        .hero-content { position: relative; z-index: 2; max-width: 800px; }
        .hero-content h1 { font-size: 2.8rem; font-weight: 750; line-height: 1.2; margin-bottom: 18px; }
        .hero-content p { font-size: 1.15rem; color: var(--text-secondary); line-height: 1.65; }

        .section { padding: 70px 0; }
        .section-dark { background: var(--secondary-bg); }

        .section-label {
            display: inline-block; font-size: 0.8rem; font-weight: 650; text-transform: uppercase;
            letter-spacing: 0.06em; color: var(--accent-cyan);
            background: rgba(37,99,235,0.12);
            padding: 5px 14px; border-radius: 50px; margin-bottom: 16px;
        }

        .section-title { font-size: 2rem; font-weight: 700; margin-bottom: 14px; line-height: 1.25; }

        .section-subtitle { color: var(--text-secondary); font-size: 1.05rem; margin-bottom: 40px; max-width: 680px; }

        .strategy-grid {
            display: grid; grid-template-columns: repeat(3, 1fr); gap: 28px;
        }

        .strategy-card {
            background: var(--card-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 32px 26px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .strategy-card::before {
            content: ''; position: absolute; top: 0; left: 0; width: 4px; height: 100%;
            background: linear-gradient(180deg, var(--accent-blue), var(--accent-cyan));
            opacity: 0; transition: opacity var(--transition-smooth);
        }
        .strategy-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }
        .strategy-card:hover::before { opacity: 1; }
        .strategy-icon {
            font-size: 2.2rem; margin-bottom: 18px;
            display: inline-block;
        }
        .strategy-card h3 { font-size: 1.2rem; font-weight: 680; margin-bottom: 10px; }
        .strategy-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.6; }

        .content-with-sidebar {
            display: grid; grid-template-columns: 1fr 360px; gap: 48px;
            align-items: start;
        }

        .article-list-compact { display: flex; flex-direction: column; gap: 24px; }

        .article-row {
            display: flex; gap: 20px; 
            background: var(--card-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-smooth);
        }
        .article-row:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .article-thumb {
            width: 160px; height: 120px; border-radius: var(--radius-sm);
            object-fit: cover; flex-shrink: 0;
        }
        .article-info h4 { font-size: 1.1rem; font-weight: 680; margin-bottom: 8px; }
        .article-info p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.55; }
        .article-meta { font-size: 0.78rem; color: var(--text-holo); margin-top: 8px; display: flex; gap: 16px; }

        .sidebar-cta {
            background: var(--card-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-lg);
            padding: 32px 26px;
            text-align: center;
            position: sticky; top: 90px;
        }
        .sidebar-cta h3 { font-size: 1.2rem; font-weight: 680; margin-bottom: 12px; }
        .sidebar-cta p { font-size: 0.95rem; color: var(--text-secondary); margin-bottom: 22px; }
        .btn-cta-primary {
            display: inline-block; width: 100%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #FFFFFF; padding: 13px 24px; border-radius: 50px;
            font-weight: 650; font-size: 1rem; box-shadow: var(--shadow-glow);
            text-align: center;
        }
        .btn-cta-primary:hover {
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .procedure-steps { counter-reset: step; list-style: none; display: flex; flex-direction: column; gap: 24px; }
        .procedure-steps li {
            counter-increment: step;
            background: var(--card-glass);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 28px;
            display: flex; gap: 20px; align-items: flex-start;
        }
        .procedure-steps li::before {
            content: counter(step);
            width: 44px; height: 44px; flex-shrink: 0;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%; display: flex; align-items: center; justify-content: center;
            font-weight: 750; font-size: 1.2rem; color: #FFFFFF;
        }
        .procedure-steps h4 { font-size: 1.05rem; font-weight: 680; margin-bottom: 6px; }
        .procedure-steps p { color: var(--text-secondary); font-size: 0.92rem; }

        .faq-list { display: flex; flex-direction: column; gap: 14px; }
        .faq-item {
            background: var(--card-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 26px;
            transition: all var(--transition-fast);
        }
        .faq-item:hover { border-color: var(--border-glow); }
        .faq-item h4 { font-size: 1.05rem; font-weight: 680; margin-bottom: 8px; }
        .faq-item p { font-size: 0.92rem; color: var(--text-secondary); }

        .data-row {
            display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
        }
        .data-card {
            text-align: center; padding: 28px 16px;
            background: var(--card-glass); backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
        }
        .data-number { font-size: 2.2rem; font-weight: 750; color: var(--accent-cyan); }
        .data-label { font-size: 0.9rem; color: var(--text-secondary); margin-top: 6px; }

        .site-footer {
            background: var(--secondary-bg); padding: 50px 0 30px;
            border-top: 1px solid var(--border-subtle); margin-top: 0;
        }
        .footer-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 36px; margin-bottom: 40px; }
        .footer-col h6 { font-size: 1rem; font-weight: 680; margin-bottom: 16px; color: var(--text-primary); }
        .footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
        .footer-col a { font-size: 0.9rem; color: var(--text-secondary); }
        .footer-col a:hover { color: var(--accent-cyan); }
        .footer-bottom { text-align: center; padding-top: 24px; border-top: 1px solid var(--border-subtle); }
        .footer-badges { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }
        .trust-badge {
            display: inline-block; padding: 6px 16px; border-radius: 50px;
            background: rgba(37,99,235,0.1); border: 1px solid var(--border-subtle);
            font-size: 0.8rem; color: var(--text-holo); font-weight: 600;
        }
        .footer-bottom p { font-size: 0.82rem; color: var(--text-secondary); }

        .fab {
            position: fixed; left: 24px; bottom: 96px; z-index: 90;
            width: 56px; height: 56px; border-radius: 50%;
            background: rgba(7,7,13,0.82); backdrop-filter: blur(14px);
            border: 2px solid var(--border-glow);
            display: flex; align-items: center; justify-content: center;
            font-size: 1.5rem; color: var(--accent-cyan);
            box-shadow: 0 0 22px rgba(6,182,212,0.45);
            transition: all var(--transition-smooth);
        }
        .fab:hover { box-shadow: 0 0 32px rgba(6,182,212,0.7); transform: scale(1.08); }

        @media (max-width: 1024px) {
            .strategy-grid { grid-template-columns: repeat(2, 1fr); }
            .content-with-sidebar { grid-template-columns: 1fr; }
            .data-row { grid-template-columns: repeat(2, 1fr); }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
        }
        @media (max-width: 768px) {
            .main-nav { display: none; }
            .mobile-toggle { display: block; }
            .strategy-grid { grid-template-columns: 1fr; }
            .data-row { grid-template-columns: 1fr 1fr; }
            .hero-content h1 { font-size: 2rem; }
            .article-row { flex-direction: column; }
            .article-thumb { width: 100%; height: 180px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 16px; }
            .data-row { grid-template-columns: 1fr; }
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}