/* roulang page: index */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1A1A1A;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-warm: #FF6B35;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-active: #FF4500;
            --shadow-glow: 0 0 20px rgba(255,69,0,0.15);
            --shadow-card: 0 4px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,69,0,0.2);
            transition: background var(--transition-smooth);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .logo span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(255,69,0,0.1);
        }

        .main-nav a.active {
            color: var(--accent-lava);
            background: rgba(255,69,0,0.12);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            padding: 9px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 15px rgba(255,69,0,0.3);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 25px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 100px;
            position: relative;
            min-height: 70vh;
            display: flex;
            align-items: center;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.25;
            mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 100%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.3) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .hero-text h1 {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 0%, #FF6B35 60%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-text .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 540px;
        }

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

        .btn-primary {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            color: #FFF;
            background: linear-gradient(135deg, #FF4500, #CC3700);
            box-shadow: 0 8px 30px rgba(255,69,0,0.35);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 12px 40px rgba(255,69,0,0.55);
            transform: translateY(-2px);
        }

        .btn-outline {
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            background: transparent;
            border: 2px solid var(--border-subtle);
            transition: all var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
            background: rgba(255,69,0,0.05);
        }

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

        .hero-card-stack {
            position: relative;
            width: 100%;
            max-width: 440px;
        }

        .hero-card-stack img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
            border: 2px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .hero-card-stack::after {
            content: '';
            position: absolute;
            inset: -12px;
            border-radius: var(--radius-xl);
            border: 1px solid rgba(255,69,0,0.25);
            z-index: -1;
            transform: rotate(-2deg);
        }

        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

        .hero-stat {
            text-align: left;
        }

        .hero-stat .stat-num {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
        }

        .hero-stat .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            margin-top: 4px;
        }

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

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

        .section-tag {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--accent-lava);
            background: rgba(255,69,0,0.08);
            border: 1px solid rgba(255,69,0,0.2);
            margin-bottom: 16px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }

        /* Comparison Table */
        .comparison-table-wrap {
            overflow-x: auto;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .comparison-table thead th {
            background: var(--bg-secondary);
            color: var(--accent-lava);
            font-weight: 700;
            font-size: 1rem;
            padding: 18px 20px;
            text-align: left;
            border-bottom: 2px solid var(--border-active);
        }

        .comparison-table tbody td {
            padding: 16px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

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

        .comparison-table tbody tr:hover td {
            background: rgba(255,69,0,0.03);
        }

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

        .badge-check {
            color: #32CD32;
        }

        .badge-x {
            color: var(--text-muted);
        }

        /* Recommended Cards */
        .recommend-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }

        .recommend-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .recommend-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #FF4500, #FF0000);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

        .recommend-card:hover {
            border-color: rgba(255,69,0,0.4);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

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

        .recommend-card.featured {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }

        .recommend-card.featured::before {
            opacity: 1;
        }

        .card-badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            background: rgba(255,69,0,0.15);
            color: var(--accent-lava);
            margin-bottom: 16px;
        }

        .recommend-card h4 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .recommend-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 20px;
        }

        .card-features {
            list-style: none;
            margin-bottom: 20px;
        }

        .card-features li {
            padding: 6px 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .card-features li i {
            color: #32CD32;
            font-size: 0.85rem;
        }

        .recommend-card .btn-primary {
            width: 100%;
            justify-content: center;
        }

        /* News Section */
        .news-layout {
            display: grid;
            grid-template-columns: 1fr 360px;
            gap: 48px;
        }

        .news-main-list {
            list-style: none;
        }

        .news-main-list li {
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .news-main-list li:first-child {
            padding-top: 0;
        }

        .news-main-list li:hover {
            padding-left: 8px;
        }

        .news-main-list a {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            gap: 16px;
            color: var(--text-primary);
        }

        .news-main-list .news-title {
            font-weight: 600;
            font-size: 1.05rem;
            flex: 1;
            line-height: 1.4;
            transition: color var(--transition-fast);
        }

        .news-main-list a:hover .news-title {
            color: var(--accent-lava);
        }

        .news-main-list .news-date {
            font-size: 0.85rem;
            color: var(--text-muted);
            white-space: nowrap;
        }

        .news-sidebar {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .news-sidebar h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 16px;
            color: var(--accent-lava);
        }

        .news-sidebar-list {
            list-style: none;
        }

        .news-sidebar-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
        }

        .news-sidebar-list li:last-child {
            border-bottom: none;
        }

        .news-sidebar-list a {
            font-size: 0.9rem;
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

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

        .news-empty {
            padding: 40px;
            text-align: center;
            color: var(--text-muted);
            font-style: italic;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, #1A0A00 0%, #0B0B0B 100%);
            border-top: 1px solid rgba(255,69,0,0.3);
            border-bottom: 1px solid rgba(255,69,0,0.3);
        }

        .cta-inner {
            text-align: left;
            display: grid;
            grid-template-columns: 1fr auto;
            gap: 40px;
            align-items: center;
        }

        .cta-inner h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .cta-inner p {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 500px;
        }

        /* FAQ */
        .faq-list {
            display: grid;
            gap: 12px;
        }

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

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            user-select: none;
            transition: color var(--transition-fast);
        }

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

        .faq-question i {
            transition: transform var(--transition-smooth);
            color: var(--accent-lava);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

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

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

        .faq-item.open {
            border-color: rgba(255,69,0,0.5);
            box-shadow: var(--shadow-glow);
        }

        /* Beginner Guide */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }

        .step-card {
            text-align: left;
            padding: 32px 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            position: relative;
            transition: all var(--transition-smooth);
        }

        .step-card:hover {
            border-color: rgba(255,69,0,0.4);
            box-shadow: var(--shadow-glow);
        }

        .step-num {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-lava);
            line-height: 1;
            margin-bottom: 12px;
            font-family: var(--font-heading);
        }

        .step-card h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

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

        /* Social Proof */
        .proof-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            align-items: center;
            justify-content: flex-start;
        }

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

        .proof-item i {
            color: var(--accent-lava);
            font-size: 1.4rem;
        }

        .proof-item strong {
            color: var(--text-primary);
            font-size: 1.3rem;
            margin-right: 4px;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--bg-card);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(255,69,0,0.3);
            transition: all var(--transition-smooth);
            animation: fabFloat 3s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF4500, #FF0000, #FF4500);
            z-index: -1;
            animation: fabRotate 4s linear infinite;
        }

        .fab-left:hover {
            transform: scale(1.15);
            box-shadow: 0 0 30px rgba(255,69,0,0.6);
        }

        .fab-left:active {
            transform: scale(0.95);
        }

        .fab-left i {
            color: #FFF;
            font-size: 1.3rem;
        }

        .fab-notif {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: #FF0000;
            animation: blink 1.2s ease-in-out infinite;
        }

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

        @keyframes fabRotate {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-col h5 {
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--text-secondary);
            text-decoration: underline;
        }

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-subtle);
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        .trust-badge i {
            color: #32CD32;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-text h1 {
                font-size: 2.4rem;
            }
            .news-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cta-inner {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .cta-inner p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .main-nav {
                display: none;
                position: fixed;
                top: 60px;
                left: 0;
                right: 0;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 20px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .main-nav a {
                padding: 12px 16px;
                border-radius: var(--radius-md);
                width: 100%;
                text-align: left;
            }
            .nav-cta-group {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-section {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .hero-desc {
                font-size: 0.95rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .recommend-grid {
                grid-template-columns: 1fr;
            }
            .comparison-table-wrap {
                font-size: 0.85rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 44px;
                height: 44px;
            }
            .proof-strip {
                gap: 16px;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn-primary,
            .hero-actions .btn-outline {
                width: 100%;
                text-align: center;
                justify-content: center;
            }
            .hero-stats {
                gap: 16px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 10px 12px;
                font-size: 0.8rem;
            }
            .cta-inner h2 {
                font-size: 1.5rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1A1A1A;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-warm: #FF6B35;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-active: #FF4500;
            --shadow-glow: 0 0 20px rgba(255,69,0,0.15);
            --shadow-card: 0 4px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }
        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color var(--transition-fast);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .button {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: var(--font-body);
            transition: all var(--transition-smooth);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,69,0,0.2);
            transition: background var(--transition-smooth);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }
        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }
        .logo span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
        }
        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(255,69,0,0.1);
        }
        .main-nav a.active {
            color: var(--accent-lava);
            background: rgba(255,69,0,0.12);
        }
        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }
        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }
        .btn-signup {
            padding: 9px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 15px rgba(255,69,0,0.3);
            transition: all var(--transition-smooth);
        }
        .btn-signup:hover {
            box-shadow: 0 6px 25px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }
        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }
        .page-banner {
            position: relative;
            padding: 160px 0 80px;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            z-index: 0;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11,11,11,0.85) 0%, rgba(22,22,22,0.9) 100%);
            z-index: 1;
        }
        .page-banner .container {
            position: relative;
            z-index: 2;
        }
        .banner-content {
            max-width: 800px;
        }
        .banner-content .tag {
            display: inline-block;
            padding: 6px 16px;
            background: rgba(255,69,0,0.2);
            border: 1px solid rgba(255,69,0,0.4);
            border-radius: 50px;
            color: var(--accent-lava);
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 20px;
        }
        .banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            color: var(--text-primary);
        }
        .banner-content h1 span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-content .lead {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .stats-mini {
            display: flex;
            gap: 40px;
            margin-top: 30px;
        }
        .stats-mini .stat-item {
            text-align: left;
        }
        .stats-mini .stat-number {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-lava);
        }
        .stats-mini .stat-label {
            font-size: 0.9rem;
            color: var(--text-muted);
        }
        .content-section {
            padding: 80px 0;
        }
        .content-section.bg-alt {
            background-color: var(--bg-secondary);
        }
        .section-header {
            margin-bottom: 50px;
        }
        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            max-width: 700px;
        }
        .guide-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 30px;
        }
        .guide-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .guide-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 40px;
            background: var(--accent-lava);
            border-radius: 0 0 4px 0;
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }
        .guide-card:hover {
            border-color: rgba(255,69,0,0.3);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }
        .guide-card:hover::before {
            opacity: 1;
        }
        .guide-card .card-icon {
            width: 56px;
            height: 56px;
            background: rgba(255,69,0,0.1);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-lava);
            margin-bottom: 20px;
        }
        .guide-card h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }
        .guide-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 0;
        }
        .guide-card ul {
            list-style: none;
            padding: 0;
            margin: 15px 0 0;
        }
        .guide-card ul li {
            padding: 6px 0;
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: flex;
            align-items: baseline;
            gap: 8px;
        }
        .guide-card ul li i {
            color: var(--accent-lava);
            font-size: 0.7rem;
        }
        .table-wrapper {
            overflow-x: auto;
            margin-top: 30px;
        }
        .ranking-table {
            width: 100%;
            border-collapse: collapse;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .ranking-table th {
            background: rgba(255,69,0,0.1);
            color: var(--accent-lava);
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            font-size: 0.95rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }
        .ranking-table td {
            padding: 14px 20px;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.95rem;
        }
        .ranking-table tr:last-child td {
            border-bottom: none;
        }
        .ranking-table .highlight-row {
            background: rgba(255,69,0,0.05);
        }
        .ranking-table .rank-badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.8rem;
            background: rgba(255,69,0,0.2);
            color: var(--accent-lava);
        }
        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 0;
            margin-top: 30px;
        }
        .process-step {
            display: flex;
            gap: 24px;
            padding: 24px 0;
            border-bottom: 1px solid var(--border-subtle);
            align-items: flex-start;
        }
        .process-step:last-child {
            border-bottom: none;
        }
        .step-number {
            flex-shrink: 0;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.3rem;
            color: #fff;
        }
        .step-info h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }
        .step-info p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            margin: 0;
        }
        .feature-box {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            margin-top: 40px;
        }
        .feature-box img {
            border-radius: var(--radius-xl);
            box-shadow: var(--shadow-card);
        }
        .feature-text h3 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .feature-text p {
            color: var(--text-secondary);
            font-size: 1rem;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .feature-text .check-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .feature-text .check-list li {
            padding: 8px 0;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .feature-text .check-list li i {
            color: var(--accent-lava);
        }
        .faq-section {
            padding: 80px 0;
        }
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }
        .faq-item:hover {
            border-color: rgba(255,69,0,0.25);
        }
        .faq-question {
            padding: 20px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1.05rem;
        }
        .faq-question i {
            color: var(--accent-lava);
            transition: transform var(--transition-smooth);
        }
        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }
        .faq-item.open .faq-answer {
            display: block;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
            text-align: center;
        }
        .cta-card {
            background: var(--bg-card);
            border: 1px solid rgba(255,69,0,0.2);
            border-radius: var(--radius-xl);
            padding: 60px 40px;
            box-shadow: var(--shadow-glow);
        }
        .cta-card h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .cta-card p {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 30px;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta-primary {
            display: inline-block;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 20px rgba(255,69,0,0.4);
            transition: all var(--transition-smooth);
        }
        .btn-cta-primary:hover {
            box-shadow: 0 8px 30px rgba(255,69,0,0.6);
            transform: translateY(-2px);
        }
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h5 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--accent-lava);
        }
        .trust-badge {
            display: inline-block;
            margin-top: 12px;
            padding: 6px 14px;
            background: rgba(255,69,0,0.1);
            border-radius: 50px;
            color: var(--accent-lava);
            font-size: 0.85rem;
            font-weight: 600;
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-muted);
        }
        .footer-bottom a {
            color: var(--text-muted);
            text-decoration: underline;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(11,11,11,0.8);
            backdrop-filter: blur(12px);
            border: 2px solid var(--accent-lava);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(255,69,0,0.3);
            transition: all var(--transition-smooth);
            animation: floatFab 3s ease-in-out infinite;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(255,69,0,0.6);
            background: rgba(255,69,0,0.15);
        }
        @keyframes floatFab {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @media (max-width: 1024px) {
            .container {
                padding: 0 20px;
            }
            .banner-content h1 {
                font-size: 2.2rem;
            }
            .feature-box {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .guide-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11,11,11,0.95);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid rgba(255,69,0,0.2);
            }
            .main-nav.open {
                display: flex;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .guide-grid {
                grid-template-columns: 1fr;
            }
            .process-step {
                flex-direction: column;
                gap: 12px;
            }
            .stats-mini {
                flex-wrap: wrap;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .logo {
                font-size: 1.1rem;
            }
            .header-inner {
                height: 60px;
            }
            .page-banner {
                padding: 120px 0 50px;
            }
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .cta-card {
                padding: 40px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1A1A1A;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-warm: #FF6B35;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-active: #FF4500;
            --shadow-glow: 0 0 20px rgba(255,69,0,0.15);
            --shadow-card: 0 4px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

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

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
            margin: 0;
            padding: 0;
        }

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 69, 0, 0.2);
            transition: background var(--transition-smooth);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .logo span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(255, 69, 0, 0.1);
        }

        .main-nav a.active {
            color: var(--accent-lava);
            background: rgba(255, 69, 0, 0.12);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            padding: 9px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 15px rgba(255, 69, 0, 0.3);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 25px rgba(255, 69, 0, 0.5);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Page Banner */
        .page-banner {
            padding: 120px 0 60px;
            position: relative;
            min-height: 300px;
            display: flex;
            align-items: center;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(11, 11, 11, 0.85) 0%, rgba(11, 11, 11, 0.95) 100%);
            z-index: 1;
        }

        .page-banner .container {
            position: relative;
            z-index: 2;
        }

        .page-banner h1 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .page-banner .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 0.95rem;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .page-banner .breadcrumb a {
            color: var(--accent-lava);
            transition: color var(--transition-fast);
        }

        .page-banner .breadcrumb a:hover {
            color: var(--accent-warm);
        }

        .page-banner .breadcrumb i {
            font-size: 0.7rem;
        }

        .banner-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 12px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

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

        .banner-meta .badge-category {
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
            padding: 4px 14px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* Article Content Layout */
        .article-layout {
            padding: 60px 0;
        }

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

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

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-subtle);
            margin-bottom: 32px;
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-size: 1.7rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 16px;
            line-height: 1.3;
            padding-bottom: 10px;
            border-bottom: 2px solid var(--border-active);
            display: inline-block;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--accent-warm);
            margin: 24px 0 12px;
            line-height: 1.4;
        }

        .article-body p {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-secondary);
            margin-bottom: 18px;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px;
            padding-left: 24px;
            color: var(--text-secondary);
            font-size: 1.02rem;
            line-height: 1.7;
        }

        .article-body li {
            margin-bottom: 10px;
        }

        .article-body strong {
            color: var(--accent-warm);
            font-weight: 700;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent-lava);
            background: rgba(255, 69, 0, 0.05);
            padding: 18px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 24px 0;
            color: var(--text-secondary);
            font-style: italic;
            font-size: 1.05rem;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            width: 100%;
        }

        .article-highlight-box {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.08), rgba(255, 0, 0, 0.05));
            border: 1px solid rgba(255, 69, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 24px 28px;
            margin: 28px 0;
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }

        .article-highlight-box i {
            font-size: 1.8rem;
            color: var(--accent-lava);
            flex-shrink: 0;
            margin-top: 4px;
        }

        .article-highlight-box p {
            margin: 0;
            color: var(--text-primary);
            font-weight: 500;
            font-size: 1.05rem;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
        }

        .sidebar-card {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-subtle);
            margin-bottom: 24px;
        }

        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 20px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .sidebar-card h4 i {
            color: var(--accent-lava);
        }

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

        .sidebar-card ul li {
            margin-bottom: 10px;
        }

        .sidebar-card ul li a {
            display: flex;
            align-items: center;
            gap: 10px;
            padding: 10px 14px;
            border-radius: var(--radius-sm);
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
        }

        .sidebar-card ul li a:hover {
            background: rgba(255, 69, 0, 0.08);
            color: var(--accent-lava);
        }

        .sidebar-card ul li a i {
            font-size: 0.8rem;
            color: var(--accent-lava);
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, #FF4500, #CC3700);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            box-shadow: 0 8px 30px rgba(255, 69, 0, 0.35);
        }

        .sidebar-cta-card h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: #FFFFFF;
            margin-bottom: 12px;
        }

        .sidebar-cta-card p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 0.95rem;
            margin-bottom: 20px;
            line-height: 1.5;
        }

        .sidebar-cta-card .btn-cta {
            display: inline-block;
            padding: 12px 28px;
            background: #FFFFFF;
            color: #FF4500;
            font-weight: 700;
            border-radius: var(--radius-md);
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
        }

        .sidebar-cta-card .btn-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        .share-buttons {
            display: flex;
            gap: 8px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .share-btn {
            width: 38px;
            height: 38px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(255, 255, 255, 0.08);
            color: var(--text-secondary);
            font-size: 1rem;
            transition: all var(--transition-smooth);
        }

        .share-btn:hover {
            background: var(--accent-lava);
            color: #FFFFFF;
            transform: translateY(-2px);
        }

        /* Related Articles */
        .related-section {
            padding: 40px 0 80px;
            border-top: 1px solid var(--border-subtle);
        }

        .related-section h3 {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 32px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

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

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

        .related-card:hover {
            border-color: var(--accent-lava);
            box-shadow: 0 8px 30px rgba(255, 69, 0, 0.2);
            transform: translateY(-4px);
        }

        .related-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }

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

        .related-card-body h4 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .related-card-body p {
            font-size: 0.9rem;
            color: var(--text-muted);
            margin: 0;
            line-height: 1.5;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 60px 0 30px;
            margin-top: 40px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-subtle);
        }

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

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

        .footer-col ul li a {
            color: var(--text-muted);
            font-size: 0.95rem;
            transition: color var(--transition-fast);
        }

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

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            margin-top: 16px;
            padding: 8px 16px;
            background: rgba(255, 69, 0, 0.08);
            border-radius: var(--radius-sm);
            font-size: 0.85rem;
            color: var(--accent-lava);
            font-weight: 500;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        .footer-bottom a {
            color: var(--accent-lava);
        }

        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 999;
            display: flex;
            flex-direction: column;
            align-items: center;
        }

        .fab-btn {
            width: 52px;
            height: 52px;
            border-radius: 26px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid;
            border-image: linear-gradient(135deg, #FF4500, #FF0000) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #FF4500;
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(255, 69, 0, 0.4);
            transition: all var(--transition-smooth);
            opacity: 0.7;
            animation: fabPulse 2.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 15px rgba(255, 69, 0, 0.3);
            }
            50% {
                box-shadow: 0 0 30px rgba(255, 69, 0, 0.6);
            }
        }

        .fab-btn:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(255, 69, 0, 0.7);
            color: #FF6B35;
        }

        .fab-btn:active {
            transform: scale(0.95);
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF0000;
            border-radius: 50%;
            border: 2px solid #0B0B0B;
            animation: badgeBlink 1.5s ease-in-out infinite;
        }

        @keyframes badgeBlink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.3;
            }
        }

        .not-found-block {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-muted);
        }

        .not-found-block h3 {
            font-size: 1.5rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .not-found-block a {
            color: var(--accent-lava);
            font-weight: 600;
            text-decoration: underline;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }

            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }

            .sidebar-card {
                margin-bottom: 0;
            }

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

            .page-banner h1 {
                font-size: 2rem;
            }
        }

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

            .mobile-toggle {
                display: block;
            }

            .main-nav.mobile-open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 11, 11, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                padding: 16px 24px;
                border-bottom: 1px solid rgba(255, 69, 0, 0.3);
                z-index: 999;
            }

            .main-nav.mobile-open a {
                padding: 14px 18px;
                width: 100%;
                text-align: center;
            }

            .header-inner {
                height: 60px;
            }

            .logo {
                font-size: 1.1rem;
            }

            .btn-login,
            .btn-signup {
                font-size: 0.8rem;
                padding: 6px 14px;
            }

            .page-banner {
                padding: 100px 0 40px;
                min-height: 220px;
            }

            .page-banner h1 {
                font-size: 1.6rem;
            }

            .article-body {
                padding: 24px 18px;
            }

            .article-body h2 {
                font-size: 1.4rem;
            }

            .article-sidebar {
                grid-template-columns: 1fr;
            }

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

            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }

            .fab-floating {
                left: 12px;
                bottom: 80px;
            }

            .fab-btn {
                width: 46px;
                height: 46px;
                font-size: 1.2rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .page-banner h1 {
                font-size: 1.35rem;
            }

            .banner-meta {
                gap: 10px;
                font-size: 0.8rem;
            }

            .article-body {
                padding: 20px 14px;
            }

            .article-body p {
                font-size: 0.98rem;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1A1A1A;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-warm: #FF6B35;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-active: #FF4500;
            --shadow-glow: 0 0 20px rgba(255,69,0,0.15);
            --shadow-card: 0 4px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        * {
            box-sizing: border-box;
        }

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11, 11, 11, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255, 69, 0, 0.2);
            transition: background var(--transition-smooth);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .logo span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(255, 69, 0, 0.1);
        }

        .main-nav a.active {
            color: var(--accent-lava);
            background: rgba(255, 69, 0, 0.12);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            padding: 9px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 15px rgba(255, 69, 0, 0.3);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 25px rgba(255, 69, 0, 0.5);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Hero Banner */
        .hero-banner {
            padding: 140px 0 90px;
            position: relative;
            display: flex;
            align-items: center;
            min-height: 50vh;
        }

        .hero-banner-bg {
            position: absolute;
            inset: 0;
            z-index: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.2;
            mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.2) 100%);
            -webkit-mask-image: linear-gradient(to bottom, rgba(0, 0, 0, 0.9) 0%, rgba(0, 0, 0, 0.2) 100%);
        }

        .hero-banner-content {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 800px;
            margin: 0 auto;
        }

        .hero-badge {
            display: inline-block;
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.2), rgba(255, 0, 0, 0.2));
            border: 1px solid rgba(255, 69, 0, 0.4);
            color: var(--accent-warm);
            padding: 6px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            margin-bottom: 24px;
            letter-spacing: 0.02em;
        }

        .hero-banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            background: linear-gradient(180deg, #FFFFFF 0%, #CCCCCC 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-banner-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            max-width: 650px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .btn-primary-explore {
            display: inline-block;
            padding: 14px 36px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 20px rgba(255, 69, 0, 0.4);
            transition: all var(--transition-smooth);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .btn-primary-explore:hover {
            box-shadow: 0 8px 30px rgba(255, 69, 0, 0.6);
            transform: translateY(-2px);
            color: #FFFFFF;
        }

        /* Stats Panel */
        .stats-panel {
            padding: 60px 0 80px;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            text-align: center;
        }

        .stat-item {
            padding: 20px;
        }

        .stat-number {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1;
            margin-bottom: 12px;
        }

        .stat-label {
            font-weight: 600;
            color: var(--text-primary);
            font-size: 1.1rem;
            margin-bottom: 6px;
        }

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

        /* Tips Matrix */
        .tips-matrix {
            padding: 90px 0;
            background: var(--bg-primary);
        }

        .section-header {
            max-width: 700px;
            margin: 0 auto 60px;
            text-align: center;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-muted);
            line-height: 1.7;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 30px;
            max-width: 1100px;
            margin: 0 auto;
        }

        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 30px;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

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

        .tip-card-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.15), rgba(255, 0, 0, 0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.6rem;
            margin-bottom: 20px;
        }

        .tip-card h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .tip-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 18px;
        }

        .tip-tag {
            display: inline-block;
            background: rgba(255, 69, 0, 0.1);
            color: var(--accent-warm);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* Experience Timeline */
        .exp-timeline {
            padding: 90px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
        }

        .timeline-container {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
        }

        .timeline-container::before {
            content: '';
            position: absolute;
            left: 28px;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, #FF4500, #FF0000);
            border-radius: 2px;
        }

        .timeline-item {
            position: relative;
            padding-left: 70px;
            margin-bottom: 50px;
        }

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: 16px;
            top: 4px;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--accent-lava);
            border: 4px solid var(--bg-secondary);
            box-shadow: 0 0 0 3px rgba(255, 69, 0, 0.3);
            z-index: 2;
        }

        .timeline-content {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
        }

        .timeline-content:hover {
            border-color: var(--accent-lava);
            box-shadow: var(--shadow-glow);
        }

        .timeline-content h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .timeline-content p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Comparison Table */
        .comparison-section {
            padding: 90px 0;
            background: var(--bg-primary);
        }

        .comparison-table-wrapper {
            max-width: 1000px;
            margin: 0 auto;
            overflow-x: auto;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            background: var(--bg-card);
        }

        .comparison-table thead th {
            background: linear-gradient(135deg, rgba(255, 69, 0, 0.15), rgba(255, 0, 0, 0.1));
            padding: 18px 24px;
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            color: var(--accent-warm);
            border-bottom: 1px solid var(--border-active);
            font-family: var(--font-heading);
        }

        .comparison-table tbody td {
            padding: 16px 24px;
            color: var(--text-secondary);
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border-subtle);
            line-height: 1.5;
        }

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

        .comparison-table tbody tr:hover td {
            background: rgba(255, 69, 0, 0.04);
        }

        .badge-risk {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(255, 69, 0, 0.15);
            color: var(--accent-lava);
        }

        .badge-safe {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(50, 205, 50, 0.15);
            color: #32CD32;
        }

        /* FAQ */
        .faq-section {
            padding: 90px 0;
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
        }

        .faq-grid {
            max-width: 850px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: rgba(255, 69, 0, 0.4);
        }

        .faq-question {
            width: 100%;
            padding: 22px 28px;
            background: none;
            text-align: left;
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
        }

        .faq-question i {
            color: var(--accent-lava);
            transition: transform var(--transition-smooth);
            font-size: 0.9rem;
        }

        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 28px;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 28px 24px;
        }

        .faq-answer p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* CTA */
        .cta-section {
            padding: 100px 0;
            background: var(--bg-primary);
            text-align: center;
            position: relative;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-lava), transparent);
        }

        .cta-section h2 {
            font-family: var(--font-heading);
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 20px;
            color: var(--text-primary);
        }

        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-muted);
            max-width: 550px;
            margin: 0 auto 30px;
            line-height: 1.7;
        }

        .btn-cta-large {
            display: inline-block;
            padding: 16px 42px;
            border-radius: var(--radius-lg);
            font-weight: 800;
            font-size: 1.1rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 6px 25px rgba(255, 69, 0, 0.5);
            letter-spacing: 0.04em;
            transition: all var(--transition-smooth);
        }

        .btn-cta-large:hover {
            box-shadow: 0 10px 35px rgba(255, 69, 0, 0.7);
            transform: translateY(-3px);
            color: #FFFFFF;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 18px;
            color: var(--text-primary);
        }

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

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

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

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

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255, 69, 0, 0.1);
            color: var(--accent-warm);
            padding: 8px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-top: 12px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 15px;
        }

        .footer-bottom a {
            color: var(--accent-lava);
            font-weight: 600;
        }

        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 28px;
            background: rgba(11, 11, 11, 0.75);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lava);
            font-size: 1.5rem;
            box-shadow: 0 0 15px rgba(255, 69, 0, 0.35);
            transition: all var(--transition-smooth);
            animation: fabPulse 2.5s ease-in-out infinite;
            cursor: pointer;
            position: relative;
        }

        .fab-btn:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(255, 69, 0, 0.65);
            border-color: var(--accent-lava);
        }

        .fab-btn:active {
            transform: scale(0.95);
        }

        .fab-notification {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 12px;
            height: 12px;
            background: #FF0000;
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(255, 0, 0, 0.7);
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 15px rgba(255, 69, 0, 0.35);
            }
            50% {
                box-shadow: 0 0 25px rgba(255, 69, 0, 0.6);
            }
        }

        /* Mobile */
        @media (max-width: 1024px) {
            .hero-banner-content h1 {
                font-size: 2.2rem;
            }
            .tips-grid {
                grid-template-columns: 1fr;
                max-width: 600px;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                gap: 30px;
                max-width: 400px;
                margin: 0 auto;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11, 11, 11, 0.95);
                flex-direction: column;
                padding: 20px;
                gap: 6px;
                border-bottom: 1px solid rgba(255, 69, 0, 0.2);
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta-group {
                gap: 8px;
            }
            .btn-login {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .hero-banner-content h1 {
                font-size: 1.8rem;
            }
            .hero-banner-content p {
                font-size: 1rem;
            }
            .section-header h2 {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.9rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 25px;
            }
            .timeline-container::before {
                left: 16px;
            }
            .timeline-item {
                padding-left: 50px;
            }
            .timeline-dot {
                left: 6px;
                width: 22px;
                height: 22px;
            }
            .stat-number {
                font-size: 2.4rem;
            }
        }

        @media (max-width: 520px) {
            .hero-banner-content h1 {
                font-size: 1.5rem;
            }
            .btn-primary-explore {
                padding: 12px 24px;
                font-size: 0.9rem;
            }
            .tip-card {
                padding: 20px;
            }
            .comparison-table thead th,
            .comparison-table tbody td {
                padding: 12px 14px;
                font-size: 0.85rem;
            }
            .timeline-content {
                padding: 18px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0B0B0B;
            --bg-secondary: #161616;
            --bg-card: #1A1A1A;
            --accent-lava: #FF4500;
            --accent-fire: #FF0000;
            --accent-warm: #FF6B35;
            --text-primary: #FFFFFF;
            --text-secondary: #CCCCCC;
            --text-muted: #999999;
            --border-subtle: #2A2A2A;
            --border-active: #FF4500;
            --shadow-glow: 0 0 20px rgba(255,69,0,0.15);
            --shadow-card: 0 4px 30px rgba(0,0,0,0.5);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 24px;
            --font-heading: 'Segoe UI', 'Roboto', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

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

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

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(255,69,0,0.2);
            transition: background var(--transition-smooth);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-lava);
            font-size: 1.5rem;
        }

        .logo span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .main-nav a {
            padding: 8px 18px;
            border-radius: var(--radius-md);
            font-weight: 500;
            font-size: 0.95rem;
            color: var(--text-secondary);
            transition: all var(--transition-smooth);
            position: relative;
        }

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
            background: rgba(255,69,0,0.1);
        }

        .main-nav a.active {
            color: var(--accent-lava);
            background: rgba(255,69,0,0.12);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            background: transparent;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-lava);
            color: var(--accent-lava);
        }

        .btn-signup {
            padding: 9px 22px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 0.9rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 4px 15px rgba(255,69,0,0.3);
            transition: all var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 25px rgba(255,69,0,0.5);
            transform: translateY(-1px);
        }

        .btn-signup:active {
            transform: translateY(0) scale(0.98);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.6rem;
            cursor: pointer;
            padding: 4px;
        }

        /* Page Banner */
        .page-banner {
            padding: 140px 0 80px;
            position: relative;
            background: var(--bg-secondary);
            border-bottom: 1px solid var(--border-subtle);
            text-align: left;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }

        .banner-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
        }

        .banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .banner-content h1 span {
            background: linear-gradient(135deg, #FF4500, #FF6B35);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .banner-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
            max-width: 650px;
        }

        .banner-meta {
            display: flex;
            align-items: center;
            gap: 24px;
            color: var(--text-muted);
            font-size: 0.9rem;
        }

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

        .banner-meta i {
            color: var(--accent-lava);
        }

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

        .section-label {
            display: inline-block;
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-lava);
            background: rgba(255,69,0,0.1);
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 40px;
        }

        /* Metrics Dashboard */
        .metrics-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 60px;
        }

        .metric-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: center;
            transition: all var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .metric-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, #FF4500, #FF6B35);
            opacity: 0;
            transition: opacity var(--transition-smooth);
        }

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

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

        .metric-icon {
            font-size: 2.5rem;
            color: var(--accent-lava);
            margin-bottom: 16px;
        }

        .metric-value {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 8px;
            line-height: 1;
        }

        .metric-label {
            font-size: 0.95rem;
            color: var(--text-muted);
        }

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

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: all var(--transition-smooth);
            position: relative;
            display: flex;
            flex-direction: column;
        }

        .strategy-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-glow);
            transform: translateY(-6px);
        }

        .strategy-number {
            font-family: var(--font-heading);
            font-size: 3rem;
            font-weight: 900;
            color: rgba(255,69,0,0.15);
            position: absolute;
            top: 20px;
            right: 24px;
            line-height: 1;
        }

        .strategy-card h3 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .strategy-card p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
            font-size: 0.95rem;
            flex: 1;
        }

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

        .tag {
            font-size: 0.8rem;
            padding: 5px 12px;
            border-radius: 20px;
            font-weight: 500;
            background: rgba(255,69,0,0.08);
            color: var(--accent-warm);
            border: 1px solid rgba(255,69,0,0.2);
        }

        /* Comparison Section */
        .comparison-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        .comparison-col {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px 32px;
            border: 1px solid var(--border-subtle);
        }

        .comparison-col.bad {
            border-left: 4px solid #FF0000;
        }

        .comparison-col.good {
            border-left: 4px solid #00C853;
        }

        .comparison-col h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            margin-bottom: 20px;
        }

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

        .comparison-col ul li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .comparison-col ul li:last-child {
            border-bottom: none;
        }

        .comparison-col ul li i {
            font-size: 1rem;
        }

        .comparison-col.bad ul li i {
            color: #FF0000;
        }

        .comparison-col.good ul li i {
            color: #00C853;
        }

        /* Process Steps */
        .steps-vertical {
            max-width: 700px;
        }

        .step-item {
            display: flex;
            gap: 24px;
            margin-bottom: 36px;
        }

        .step-marker {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.2rem;
            color: #fff;
            box-shadow: 0 4px 15px rgba(255,69,0,0.3);
        }

        .step-body h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .step-body p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
            font-size: 0.95rem;
        }

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

        .faq-item {
            background: var(--bg-card);
            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-active);
            box-shadow: var(--shadow-glow);
        }

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: var(--text-primary);
            margin-bottom: 8px;
            font-family: var(--font-heading);
        }

        .faq-answer {
            color: var(--text-muted);
            line-height: 1.6;
            font-size: 0.95rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(255,69,0,0.08) 0%, rgba(255,0,0,0.04) 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-card {
            background: var(--bg-card);
            border: 1px solid var(--border-active);
            border-radius: var(--radius-xl);
            padding: 60px 48px;
            text-align: center;
            max-width: 700px;
            margin: 0 auto;
            position: relative;
            box-shadow: 0 0 40px rgba(255,69,0,0.1);
        }

        .cta-card h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .cta-card p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            font-size: 1.05rem;
            line-height: 1.7;
        }

        .btn-cta-primary {
            display: inline-block;
            padding: 14px 40px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 1.05rem;
            color: #FFFFFF;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            box-shadow: 0 6px 25px rgba(255,69,0,0.4);
            transition: all var(--transition-smooth);
        }

        .btn-cta-primary:hover {
            box-shadow: 0 8px 35px rgba(255,69,0,0.6);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-cta-primary:active {
            transform: translateY(0) scale(0.98);
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 48px;
            margin-bottom: 40px;
        }

        .footer-col h5 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

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

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

        .footer-col ul li a {
            font-size: 0.95rem;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 16px;
            background: rgba(255,69,0,0.08);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-sm);
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin-top: 16px;
        }

        .trust-badge i {
            color: var(--accent-lava);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.9rem;
            color: var(--text-muted);
            flex-wrap: wrap;
            gap: 12px;
        }

        .footer-bottom a {
            color: var(--accent-lava);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(11,11,11,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: #FF4500;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 18px rgba(255,69,0,0.4);
            animation: floatGlow 3s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #FF4500, #FF0000);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
            opacity: 0.7;
        }

        .fab-left:hover {
            transform: scale(1.12);
            box-shadow: 0 0 28px rgba(255,69,0,0.7);
            color: #ff6b35;
        }

        .fab-left:active {
            transform: scale(0.95);
        }

        @keyframes floatGlow {
            0%, 100% { box-shadow: 0 0 18px rgba(255,69,0,0.4); }
            50% { box-shadow: 0 0 28px rgba(255,69,0,0.7); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .metrics-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .strategy-matrix {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(11,11,11,0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 16px;
                border-bottom: 1px solid var(--border-subtle);
                z-index: 999;
            }
            .main-nav.open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-cta-group {
                gap: 8px;
            }
            .banner-content h1 {
                font-size: 2rem;
            }
            .comparison-wrapper {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
            .metrics-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .strategy-matrix {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .banner-content h1 {
                font-size: 1.6rem;
            }
            .cta-card {
                padding: 36px 20px;
            }
            .cta-card h2 {
                font-size: 1.4rem;
            }
        }