/* roulang page: index */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --bg-card: #0D3520;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --accent-light-gold: #F0E68C;
            --text-white: #FFFFFF;
            --text-pale-mint: #D1F2EB;
            --text-soft: #A0C2B5;
            --border-gold: #B8860B;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.2);
            --shadow-dark: 0 8px 24px rgba(0,0,0,0.4);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-heading: 'Georgia', serif;
            --font-body: 'Segoe UI', 'Roboto', sans-serif;
            --max-width: 1200px;
            --nav-height: 70px;
        }

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

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-pale-mint);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 20px;
        }

        a { color: var(--accent-gold); transition: color 0.25s ease; text-decoration: none; }
        a:hover { color: var(--accent-light-gold); }

        h1, h2, h3, h4 { font-family: var(--font-heading); color: var(--accent-gold); line-height: 1.3; font-weight: 700; }
        h1 { font-size: 2.6rem; }
        h2 { font-size: 2rem; margin-bottom: 0.6rem; }
        h3 { font-size: 1.45rem; color: var(--text-pale-mint); }

        .btn {
            display: inline-block; padding: 12px 28px; border-radius: var(--radius-md);
            font-weight: 700; font-size: 1rem; text-align: center; cursor: pointer;
            transition: all 0.3s ease; border: none; line-height: 1.3;
        }
        .btn-gold {
            background: linear-gradient(145deg, var(--accent-gold), #e6b800);
            color: #1a2e1a; box-shadow: 0 4px 14px rgba(255,215,0,0.35);
        }
        .btn-gold:hover { background: var(--accent-light-gold); color: #000; transform: translateY(-2px); box-shadow: 0 8px 20px rgba(255,215,0,0.5); }
        .btn-outline {
            background: transparent; border: 2px solid var(--accent-gold); color: var(--accent-gold);
        }
        .btn-outline:hover { background: var(--accent-gold); color: #0A2E1C; }
        .btn-red { background: var(--accent-red); color: white; box-shadow: 0 4px 12px rgba(211,47,47,0.4); }
        .btn-red:hover { background: #b71c1c; }

        header {
            position: fixed; top: 0; left: 0; right: 0; z-index: 100;
            background: rgba(10, 46, 28, 0.92); backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-gold); height: var(--nav-height);
            display: flex; align-items: center;
        }
        .nav-container {
            display: flex; justify-content: space-between; align-items: center;
            width: 100%; max-width: var(--max-width); margin: 0 auto; padding: 0 20px;
        }
        .logo {
            font-family: var(--font-heading); font-size: 1.5rem; font-weight: 700;
            color: var(--accent-gold); white-space: nowrap;
        }
        .nav-links { display: flex; gap: 2.2rem; align-items: center; }
        .nav-links a {
            color: var(--text-pale-mint); font-weight: 600; font-size: 1rem;
            padding: 6px 0; position: relative;
        }
        .nav-links a.active { color: var(--accent-gold); }
        .nav-links a::after {
            content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 2px;
            background: var(--accent-gold); transition: width 0.25s;
        }
        .nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
        .nav-actions { display: flex; gap: 12px; align-items: center; }
        .mobile-toggle { display: none; color: var(--accent-gold); font-size: 1.8rem; }

        @media (max-width: 768px) {
            .nav-links { display: none; flex-direction: column; position: absolute; top: var(--nav-height); left: 0; right: 0; background: #0A2E1C; padding: 20px; gap: 1.2rem; border-bottom: 2px solid var(--border-gold); }
            .nav-links.show { display: flex; }
            .mobile-toggle { display: block; }
            h1 { font-size: 2rem; }
        }

        section { padding: 70px 0; }
        .hero {
            margin-top: var(--nav-height); background: linear-gradient(rgba(10,46,28,0.8), rgba(10,46,28,0.9)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            padding: 80px 0; text-align: left; position: relative;
        }
        .hero-content { max-width: 700px; }
        .hero h1 { font-size: 2.8rem; margin-bottom: 1.2rem; text-shadow: 2px 2px 8px rgba(0,0,0,0.6); }
        .hero p { font-size: 1.15rem; color: var(--text-pale-mint); margin-bottom: 2rem; line-height: 1.7; }
        .hero-cta-group { display: flex; gap: 16px; flex-wrap: wrap; }

        .promo-bar {
            background: var(--accent-red); color: white; padding: 14px 20px;
            border-radius: var(--radius-md); display: flex; align-items: center;
            justify-content: space-between; flex-wrap: wrap; margin-bottom: 30px;
        }
        .promo-bar span { font-weight: 700; }
        .countdown { font-family: monospace; background: #00000040; padding: 6px 14px; border-radius: 20px; }

        .card-grid {
            display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px; margin-top: 30px;
        }
        .feature-card {
            background: var(--bg-card); border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg); padding: 28px 22px;
            transition: transform 0.25s, box-shadow 0.3s;
        }
        .feature-card:hover { transform: translateY(-6px); box-shadow: var(--shadow-gold); }
        .feature-card h3 { margin-bottom: 12px; }

        .step-timeline {
            display: flex; flex-wrap: wrap; gap: 36px; margin-top: 30px;
            justify-content: space-between;
        }
        .step-item {
            flex: 1 1 200px; background: var(--bg-card); border-left: 5px solid var(--accent-gold);
            padding: 24px 18px; border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }
        .step-num { font-size: 2.4rem; font-weight: 800; color: var(--accent-gold); }

        .news-feed {
            display: flex; flex-wrap: wrap; gap: 28px; margin-top: 25px;
        }
        .news-list { flex: 2; display: flex; flex-direction: column; gap: 16px; }
        .news-item {
            background: var(--bg-card); padding: 18px 22px; border-radius: var(--radius-md);
            border: 1px solid #2a5a3a;
        }
        .news-item a { font-weight: 700; font-size: 1.1rem; }
        .news-side { flex: 1; background: var(--bg-secondary); border-radius: var(--radius-lg); padding: 24px; }

        .social-proof {
            display: flex; flex-wrap: wrap; gap: 28px; align-items: center;
            justify-content: space-around; background: var(--bg-secondary); padding: 40px 20px;
            border-radius: var(--radius-lg);
        }
        .proof-stat { text-align: center; }
        .proof-stat .number { font-size: 2.2rem; font-weight: 800; color: var(--accent-gold); }

        .faq-list { max-width: 800px; margin: 30px 0 0 0; }
        .faq-item { border-bottom: 1px solid var(--border-gold); padding: 18px 0; }
        .faq-question { font-weight: 700; font-size: 1.15rem; color: var(--accent-gold); margin-bottom: 8px; }

        footer {
            background: #071f12; border-top: 2px solid var(--border-gold);
            padding: 40px 0 20px; text-align: center;
        }
        .footer-links { display: flex; justify-content: center; gap: 32px; flex-wrap: wrap; margin-bottom: 24px; }
        .footer-links a { color: var(--text-pale-mint); }

        .fab-button {
            position: fixed; left: 16px; bottom: 80px; z-index: 50;
            width: 56px; height: 56px; border-radius: 50%;
            background: #000; border: 3px solid var(--accent-gold);
            display: flex; align-items: center; justify-content: center;
            box-shadow: 0 4px 20px rgba(255,215,0,0.35);
            animation: floatBreath 3s infinite ease-in-out;
            transition: transform 0.3s;
        }
        .fab-button:hover { transform: scale(1.12); }
        @keyframes floatBreath {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-5px); }
        }
        .notification-dot {
            position: absolute; top: -4px; right: -4px; width: 14px; height: 14px;
            background: var(--accent-red); border-radius: 50%; border: 2px solid white;
        }

/* roulang page: article */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-soft: #D1F2EB;
            --text-muted: #6b8a7a;
            --border-gold: #B8860B;
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --transition: all 0.3s ease;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

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

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.25);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.75rem 0;
            transition: var(--transition);
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .logo i {
            font-size: 1.8rem;
            color: var(--accent-gold);
            filter: drop-shadow(0 0 6px rgba(255, 215, 0, 0.5));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.8rem;
            flex-wrap: wrap;
        }

        .nav-links a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-soft);
            position: relative;
            padding: 0.4rem 0;
            transition: var(--transition);
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0%;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.55rem 1.3rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            box-shadow: 0 0 12px rgba(255, 215, 0, 0.4);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA000 100%);
            border: none;
            color: #0A2E1C;
            padding: 0.55rem 1.5rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 14px rgba(255, 215, 0, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(255, 215, 0, 0.55);
            background: linear-gradient(135deg, #FFE44D 0%, #FFB300 100%);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 0.25rem;
        }

        /* Article Page Layout */
        .article-hero {
            background: linear-gradient(180deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            border-bottom: 2px solid rgba(255, 215, 0, 0.2);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 300px;
            height: 300px;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-meta-top {
            display: flex;
            align-items: center;
            gap: 1.2rem;
            flex-wrap: wrap;
            margin-bottom: var(--spacing-sm);
            font-size: 0.9rem;
            color: var(--text-soft);
        }

        .article-category-badge {
            background: var(--accent-red);
            color: white;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 0.4px;
            text-transform: uppercase;
        }

        .article-date {
            display: flex;
            align-items: center;
            gap: 0.4rem;
            color: var(--text-muted);
        }

        .article-date i {
            font-size: 0.85rem;
        }

        .article-hero-title {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: var(--spacing-sm);
            max-width: 850px;
        }

        .article-hero-summary {
            font-size: 1.2rem;
            color: var(--text-soft);
            line-height: 1.6;
            max-width: 750px;
            border-left: 4px solid var(--accent-gold);
            padding-left: var(--spacing-sm);
            margin-top: var(--spacing-sm);
        }

        .article-content-section {
            padding: var(--spacing-lg) 0;
            background: var(--primary-bg);
        }

        .article-body-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
            align-items: start;
        }

        .article-main-content {
            background: rgba(18, 62, 37, 0.5);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            backdrop-filter: blur(4px);
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-soft);
        }

        .article-main-content h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            color: var(--accent-gold);
            margin: 2rem 0 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 2px solid rgba(255, 215, 0, 0.3);
        }

        .article-main-content h3 {
            font-family: var(--font-heading);
            font-size: 1.4rem;
            color: var(--text-white);
            margin: 1.8rem 0 1rem;
        }

        .article-main-content p {
            margin-bottom: 1.2rem;
        }

        .article-main-content ul,
        .article-main-content ol {
            margin: 1.2rem 0;
            padding-left: 2rem;
        }

        .article-main-content li {
            margin-bottom: 0.6rem;
        }

        .article-main-content strong {
            color: var(--accent-gold);
        }

        .article-main-content blockquote {
            background: rgba(255, 215, 0, 0.05);
            border-left: 5px solid var(--accent-gold);
            padding: 1.2rem 1.5rem;
            margin: 2rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-soft);
        }

        .article-main-content img {
            border-radius: var(--radius-md);
            margin: 2rem 0;
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
        }

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

        .sidebar-card {
            background: rgba(18, 62, 37, 0.6);
            border: 1px solid rgba(255, 215, 0, 0.25);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            backdrop-filter: blur(4px);
        }

        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
            padding-bottom: 0.5rem;
            border-bottom: 1px solid rgba(255, 215, 0, 0.3);
        }

        .sidebar-tip-list {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .sidebar-tip-item {
            display: flex;
            align-items: flex-start;
            gap: 0.8rem;
            padding: 0.6rem 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .sidebar-tip-item:last-child {
            border-bottom: none;
        }

        .sidebar-tip-icon {
            font-size: 1.3rem;
            color: var(--accent-gold);
            flex-shrink: 0;
            margin-top: 2px;
        }

        .sidebar-tip-text {
            font-size: 0.9rem;
            color: var(--text-soft);
            line-height: 1.5;
        }

        .cta-box {
            background: linear-gradient(135deg, #1a4a2e 0%, #0f361f 100%);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            text-align: center;
        }

        .cta-box p {
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .btn-cta-gold {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-gold) 0%, #FFA000 100%);
            color: #0A2E1C;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 6px 18px rgba(255, 215, 0, 0.3);
            cursor: pointer;
            border: none;
            text-align: center;
        }

        .btn-cta-gold:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 28px rgba(255, 215, 0, 0.5);
        }

        .related-articles-section {
            padding: var(--spacing-lg) 0;
            background: var(--secondary-bg);
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-lg);
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -8px;
            left: 0;
            width: 70px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 3px;
        }

        .related-cards-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
            gap: var(--spacing-md);
        }

        .related-card {
            background: rgba(18, 62, 37, 0.7);
            border: 1px solid rgba(255, 215, 0, 0.2);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition);
            cursor: pointer;
        }

        .related-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent-gold);
            box-shadow: 0 14px 30px rgba(0, 0, 0, 0.5);
        }

        .related-card-img {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .related-card-img .tag {
            position: absolute;
            top: 12px;
            left: 12px;
            background: var(--accent-red);
            color: white;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.75rem;
            font-weight: 700;
        }

        .related-card-body {
            padding: var(--spacing-sm);
        }

        .related-card-body h3 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

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

        .not-found-section {
            padding: var(--spacing-xl) 0;
            text-align: center;
            background: var(--primary-bg);
        }

        .not-found-section .icon-large {
            font-size: 4rem;
            color: var(--accent-gold);
            margin-bottom: var(--spacing-sm);
        }

        .not-found-section h2 {
            font-size: 1.8rem;
            color: var(--text-white);
            margin-bottom: var(--spacing-sm);
        }

        .not-found-section .btn-back {
            display: inline-block;
            background: var(--accent-gold);
            color: #0A2E1C;
            padding: 0.7rem 2rem;
            border-radius: 30px;
            font-weight: 700;
            margin-top: var(--spacing-sm);
            transition: var(--transition);
        }

        .not-found-section .btn-back:hover {
            box-shadow: var(--shadow-gold);
            transform: translateY(-2px);
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: radial-gradient(circle at 30% 30%, #3b2814, #1a1a1a);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: var(--transition);
            animation: floatCoin 3s ease-in-out infinite;
            cursor: pointer;
        }

        .fab-floating:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.55);
        }

        @keyframes floatCoin {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-8px);
            }
        }

        /* Footer */
        .site-footer {
            background: #061f12;
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: var(--spacing-lg) 0 var(--spacing-md);
            text-align: center;
            color: var(--text-soft);
        }

        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 2rem;
            margin-bottom: var(--spacing-sm);
        }

        .footer-links a {
            color: var(--text-soft);
            font-weight: 600;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-gold);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-body-wrapper {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
            }
            .article-hero-title {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                background: rgba(10, 46, 28, 0.98);
                padding: var(--spacing-sm);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                margin-top: 0.8rem;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                gap: 0.6rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }
            .article-hero-title {
                font-size: 1.8rem;
            }
            .article-hero-summary {
                font-size: 1rem;
            }
            .article-main-content {
                padding: var(--spacing-sm);
            }
            .related-cards-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-primary: #FFFFFF;
            --text-soft: #D1F2EB;
            --border-gold: #FFD700;
            --card-bg: rgba(18, 62, 37, 0.8);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3rem;
            --spacing-xl: 5rem;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

        *, *::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(--primary-bg);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            display: flex;
            flex-direction: column;
            min-height: 100vh;
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, opacity 0.25s ease;
        }

        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }

        .container {
            max-width: 1260px;
            margin: 0 auto;
            padding: 0 var(--spacing-sm);
        }

        /* HEADER & NAV */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.98) 0%, rgba(10, 46, 28, 0.92) 100%);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 215, 0, 0.25);
            padding: 0.65rem 0;
            transition: all 0.3s ease;
        }

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

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            font-family: var(--font-heading);
            color: var(--accent-gold);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            line-height: 1.2;
        }

        .logo i {
            font-size: 1.6rem;
            color: var(--accent-gold);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.65rem;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-soft);
            font-weight: 600;
            font-size: 0.92rem;
            position: relative;
            padding: 0.35rem 0;
            transition: color 0.25s;
            white-space: nowrap;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            transition: width 0.3s ease;
            border-radius: 2px;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-gold);
        }

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

        .auth-buttons {
            display: flex;
            align-items: center;
            gap: 0.85rem;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1px solid rgba(255, 215, 0, 0.6);
            padding: 0.5rem 1.4rem;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(255, 215, 0, 0.1);
            border-color: var(--accent-gold);
        }

        .btn-signup {
            background: linear-gradient(135deg, #FFD700, #FFBF00);
            color: #0A2E1C;
            padding: 0.5rem 1.6rem;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 18px rgba(255, 215, 0, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5);
        }

        .menu-toggle {
            display: none;
            background: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* PAGE BANNER */
        .page-banner {
            padding: 8rem 0 3rem;
            position: relative;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.75) 0%, rgba(10, 46, 28, 0.95) 100%);
            z-index: 1;
        }

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

        .banner-tag {
            display: inline-block;
            background: var(--accent-red);
            color: #fff;
            padding: 0.4rem 1.2rem;
            border-radius: 25px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.03em;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 900;
            color: var(--accent-gold);
            line-height: 1.2;
            margin-bottom: 1rem;
            font-family: var(--font-heading);
        }

        .page-banner .subtitle {
            font-size: 1.2rem;
            color: var(--text-soft);
            max-width: 700px;
            line-height: 1.6;
        }

        /* MAIN CONTENT */
        main {
            flex: 1;
        }

        .content-section {
            padding: var(--spacing-xl) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 1.25rem;
            font-family: var(--font-heading);
        }

        .section-desc {
            color: var(--text-soft);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: var(--spacing-lg);
            max-width: 800px;
        }

        /* STATS DASHBOARD */
        .stats-dashboard {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-bottom: var(--spacing-lg);
        }

        .stat-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 1.8rem 1.5rem;
            text-align: center;
            border: 1px solid rgba(255, 215, 0, 0.2);
            transition: all 0.3s ease;
        }

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

        .stat-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .stat-number {
            font-size: 2.6rem;
            font-weight: 900;
            color: #fff;
            line-height: 1;
            margin-bottom: 0.4rem;
        }

        .stat-label {
            color: var(--text-soft);
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* FEATURE GRID */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-top: var(--spacing-lg);
        }

        .feature-item {
            background: rgba(18, 62, 37, 0.5);
            border-radius: var(--radius-lg);
            padding: 2rem;
            border: 1px solid rgba(255, 215, 0, 0.15);
            transition: all 0.3s ease;
            text-align: left;
        }

        .feature-item:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 28px rgba(255, 215, 0, 0.15);
        }

        .feature-item i {
            font-size: 2.4rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
            display: block;
        }

        .feature-item h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .feature-item p {
            color: var(--text-soft);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* METHODS TABLE */
        .methods-comparison {
            overflow-x: auto;
            margin: var(--spacing-lg) 0;
        }

        .methods-table {
            width: 100%;
            border-collapse: collapse;
            border-radius: var(--radius-md);
            overflow: hidden;
            background: var(--card-bg);
        }

        .methods-table th {
            background: var(--accent-gold);
            color: #0A2E1C;
            padding: 1rem 1.2rem;
            font-weight: 800;
            text-transform: uppercase;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            text-align: left;
        }

        .methods-table td {
            padding: 1rem 1.2rem;
            color: var(--text-soft);
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
            font-size: 0.95rem;
        }

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

        .methods-table tr:hover td {
            background: rgba(255, 215, 0, 0.05);
        }

        /* CTA BLOCK */
        .cta-block {
            background: linear-gradient(135deg, #123E25, #0A2E1C);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-lg);
            padding: 2.5rem;
            text-align: center;
            margin-top: var(--spacing-lg);
        }

        .cta-block h3 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .cta-block p {
            color: var(--text-soft);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        .btn-cta {
            background: linear-gradient(135deg, #FFD700, #E6A800);
            color: #0A2E1C;
            padding: 0.85rem 2.8rem;
            border-radius: 30px;
            font-weight: 800;
            font-size: 1.05rem;
            box-shadow: 0 6px 22px rgba(255, 215, 0, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .btn-cta:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(255, 215, 0, 0.55);
            background: #FFD700;
        }

        /* FAQ */
        .faq-list {
            margin-top: var(--spacing-lg);
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-md);
            margin-bottom: 1rem;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(255, 215, 0, 0.5);
        }

        .faq-question {
            padding: 1.2rem 1.5rem;
            font-weight: 700;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1.05rem;
        }

        .faq-question i {
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }

        .faq-answer {
            padding: 0 1.5rem 1.2rem;
            color: var(--text-soft);
            line-height: 1.7;
            display: none;
        }

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

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

        /* FAB */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(145deg, #0A2E1C, #123E25);
            border: 2px solid var(--accent-gold);
            box-shadow: var(--shadow-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            opacity: 0.75;
            animation: floatVertical 3s ease-in-out infinite;
            transition: all 0.3s ease;
            color: var(--accent-gold);
            font-size: 1.6rem;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 6px 28px rgba(255, 215, 0, 0.55);
        }

        @keyframes floatVertical {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }

        /* FOOTER */
        .site-footer {
            background: #061F12;
            border-top: 2px solid rgba(255, 215, 0, 0.3);
            padding: 2.5rem 0;
            text-align: center;
        }

        .footer-links {
            display: flex;
            justify-content: center;
            gap: 2rem;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
        }

        .footer-links a {
            color: var(--text-soft);
            font-weight: 600;
            transition: color 0.25s;
        }

        .footer-links a:hover {
            color: var(--accent-gold);
        }

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .stats-dashboard {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                background: rgba(10, 46, 28, 0.98);
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 2px solid var(--accent-gold);
            }

            .nav-links.active-mobile {
                display: flex;
            }

            .menu-toggle {
                display: block;
            }

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

            .stats-dashboard {
                grid-template-columns: 1fr 1fr;
                gap: 1rem;
            }

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

            .section-title {
                font-size: 1.6rem;
            }

            .stat-number {
                font-size: 2rem;
            }
        }

        @media (max-width: 520px) {
            .stats-dashboard {
                grid-template-columns: 1fr;
            }

            .auth-buttons {
                gap: 0.5rem;
            }

            .btn-login, .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }

            .logo {
                font-size: 1.1rem;
            }

            .page-banner {
                padding: 7rem 0 2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #0D111E;
            --bg-container: #131824;
            --bg-card: #1A202E;
            --bg-card-hover: #1F2838;
            --accent-electric: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-hot: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-soft: #94A3B8;
            --border-electric: rgba(0,82,255,0.3);
            --border-cyan: rgba(0,240,255,0.2);
            --border-card: #242C3D;
            --shadow-neon: 0 0 15px rgba(0,240,255,0.35);
            --shadow-electric: 0 0 20px rgba(0,82,255,0.25);
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-pill: 50px;
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --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;
        }

        body {
            font-family: var(--font-heading);
            background: var(--bg-deep);
            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: var(--transition-fast);
        }

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

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

        .container {
            max-width: 1240px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Navigation */
        header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(13,17,30,0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0,82,255,0.15);
            transition: var(--transition-smooth);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            max-width: 1240px;
            margin: 0 auto;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-primary);
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .logo span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-electric));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .nav-links a {
            font-size: 0.925rem;
            font-weight: 500;
            color: var(--text-secondary);
            position: relative;
            padding: 6px 0;
            white-space: nowrap;
            transition: var(--transition-fast);
        }

        .nav-links a.active {
            color: var(--accent-cyan);
        }

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-electric));
            border-radius: 2px;
            box-shadow: var(--shadow-neon);
        }

        .nav-links a:hover {
            color: var(--accent-cyan);
        }

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .btn-login {
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-primary);
            background: transparent;
            padding: 8px 18px;
            border-radius: 8px;
            transition: var(--transition-fast);
        }

        .btn-login:hover {
            background: rgba(0,240,255,0.08);
        }

        .btn-signup {
            font-size: 0.9rem;
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-electric), #0039CC);
            padding: 10px 22px;
            border-radius: 8px;
            box-shadow: 0 4px 14px rgba(0,82,255,0.4);
            transition: var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-signup:hover {
            box-shadow: 0 6px 22px rgba(0,240,255,0.5);
            transform: translateY(-1px);
        }

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

        /* Hero with Countdown */
        .hero-countdown {
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 30% 20%, rgba(0,240,255,0.06) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 50%, rgba(0,82,255,0.08) 0%, transparent 55%);
            position: relative;
            overflow: hidden;
        }

        .hero-countdown::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0,240,255,0.04) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0,240,255,0.1);
            border: 1px solid rgba(0,240,255,0.25);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            letter-spacing: 0.5px;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 18px;
            letter-spacing: -0.5px;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-electric));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.08rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 32px;
            max-width: 520px;
        }

        .countdown-box {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-lg);
            padding: 28px 32px;
            display: inline-block;
            box-shadow: 0 8px 32px rgba(0,0,0,0.3);
        }

        .countdown-label {
            font-size: 0.85rem;
            color: var(--text-soft);
            margin-bottom: 12px;
            letter-spacing: 0.3px;
        }

        .countdown-timer {
            display: flex;
            gap: 16px;
            align-items: center;
        }

        .time-block {
            background: var(--bg-deep);
            border: 1px solid var(--border-electric);
            border-radius: 10px;
            padding: 14px 18px;
            text-align: center;
            min-width: 64px;
            box-shadow: 0 0 12px rgba(0,82,255,0.15);
        }

        .time-block .num {
            font-size: 2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            line-height: 1;
        }

        .time-block .unit {
            font-size: 0.7rem;
            color: var(--text-soft);
            margin-top: 4px;
            text-transform: uppercase;
        }

        .time-sep {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            font-weight: 300;
        }

        .hero-cta-group {
            margin-top: 32px;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            font-weight: 600;
            color: #fff;
            background: linear-gradient(135deg, var(--accent-electric), #0039CC);
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1rem;
            box-shadow: 0 4px 18px rgba(0,82,255,0.4);
            transition: var(--transition-smooth);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 26px rgba(0,240,255,0.55);
            transform: translateY(-2px);
        }

        .btn-outline {
            font-weight: 600;
            color: var(--accent-cyan);
            background: transparent;
            border: 2px solid rgba(0,240,255,0.4);
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }

        .btn-outline:hover {
            background: rgba(0,240,255,0.06);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

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

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 50px rgba(0,0,0,0.5), 0 0 30px rgba(0,240,255,0.15);
            border: 1px solid var(--border-cyan);
        }

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

        .section-dark {
            background: var(--bg-container);
        }

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

        .section-label {
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 12px;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1rem;
            max-width: 680px;
            line-height: 1.6;
        }

        /* Insights Dashboard */
        .insight-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .insight-card {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
        }

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

        .insight-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .insight-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .insight-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.55;
        }

        .insight-stats {
            display: flex;
            gap: 20px;
            margin-top: 16px;
            padding-top: 16px;
            border-top: 1px solid var(--border-card);
        }

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

        .stat-value {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

        .stat-label {
            font-size: 0.75rem;
            color: var(--text-soft);
        }

        /* Service Matrix */
        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 32px;
        }

        .matrix-item {
            display: flex;
            gap: 20px;
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-smooth);
        }

        .matrix-item:hover {
            border-color: var(--border-electric);
        }

        .matrix-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
        }

        .matrix-content h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 6px;
        }

        .matrix-content p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.55;
        }

        /* Comparison Table */
        .compare-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-md);
            border: 1px solid var(--border-card);
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
            background: var(--bg-card);
        }

        .compare-table th {
            background: var(--bg-container);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border-card);
        }

        .compare-table td {
            padding: 16px 20px;
            font-size: 0.93rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(36,44,61,0.5);
        }

        .compare-table tr:hover td {
            background: rgba(0,240,255,0.02);
        }

        .check-mark {
            color: #00E676;
            font-weight: 700;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-card);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            padding: 24px 28px;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

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

        .faq-item h3 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .faq-item h3 i {
            color: var(--accent-cyan);
        }

        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.93rem;
            line-height: 1.6;
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0,82,255,0.08), rgba(0,240,255,0.04));
            border-top: 1px solid var(--border-electric);
            border-bottom: 1px solid var(--border-electric);
            padding: 80px 0;
        }

        .cta-content {
            text-align: center;
            max-width: 650px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
        }

        .cta-content p {
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.6;
        }

        /* Footer */
        footer {
            background: var(--bg-container);
            border-top: 1px solid var(--border-card);
            padding: 48px 0 32px;
        }

        .footer-links {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-bottom: 24px;
            justify-content: center;
        }

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            font-weight: 500;
            transition: var(--transition-fast);
        }

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

        /* FAB */
        .fab-float {
            position: fixed;
            left: 18px;
            bottom: 90px;
            z-index: 999;
            width: 52px;
            height: 52px;
            background: rgba(19,24,36,0.85);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1.5px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-electric)) 1;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            box-shadow: 0 0 18px rgba(0,240,255,0.35);
            transition: var(--transition-smooth);
            cursor: pointer;
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-float:hover {
            box-shadow: 0 0 30px rgba(0,240,255,0.65);
            transform: scale(1.08);
            color: #fff;
        }

        @keyframes floatBreath {
            0%, 100% { opacity: 0.7; transform: translateY(0); }
            50% { opacity: 1; transform: translateY(-6px); }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-visual {
                order: -1;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .insight-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                background: rgba(13,17,30,0.96);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 18px;
                border-bottom: 1px solid var(--border-electric);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-countdown {
                padding: 120px 0 48px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .insight-grid {
                grid-template-columns: 1fr;
            }
            .matrix-grid {
                grid-template-columns: 1fr;
            }
            .countdown-timer {
                gap: 8px;
            }
            .time-block {
                padding: 10px 12px;
                min-width: 48px;
            }
            .time-block .num {
                font-size: 1.4rem;
            }
            .section {
                padding: 56px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .nav-container {
                padding: 12px 18px;
            }
            .logo {
                font-size: 1rem;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .hero-cta-group {
                flex-direction: column;
            }
            .btn-primary, .btn-outline {
                text-align: center;
                width: 100%;
            }
            .compare-table-wrap {
                margin: 0 -18px;
                border-radius: 0;
            }
        }

/* roulang page: category3 */
:root {
            --bg-dark: #121212;
            --bg-charcoal: #1C1C1E;
            --bg-card: #1E1E20;
            --gold-bronze: #C5A059;
            --gold-amber: #FFBF00;
            --text-warm: #F5F5F7;
            --text-muted-gold: #D4AC0D;
            --text-soft: #A0A0A8;
            --border-subtle: rgba(197, 160, 89, 0.25);
            --shadow-gold: 0 4px 20px rgba(197, 160, 89, 0.15);
            --radius-sm: 6px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --font-sans: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-serif: 'Playfair Display', 'Times New Roman', serif;
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-sans);
            background-color: var(--bg-dark);
            color: var(--text-warm);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* HEADER & NAV */
        .site-header {
            background: rgba(28, 28, 30, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0.85rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .logo {
            font-family: var(--font-serif);
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--gold-bronze);
            text-decoration: none;
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo i {
            margin-right: 8px;
            color: var(--gold-amber);
        }

        .nav-links {
            display: flex;
            gap: 1rem;
            align-items: center;
        }

        .nav-links a {
            color: var(--text-soft);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 0.5rem 0.9rem;
            border-radius: var(--radius-sm);
            transition: var(--transition-smooth);
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--gold-amber);
            background: rgba(197, 160, 89, 0.1);
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--gold-bronze);
            color: var(--gold-bronze);
            padding: 0.55rem 1.4rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
            cursor: pointer;
            background: rgba(0,0,0,0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--gold-bronze), var(--gold-amber));
            border: none;
            color: #121212;
            padding: 0.55rem 1.6rem;
            border-radius: 30px;
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(197, 160, 89, 0.3);
        }

        .btn-login:hover {
            background: var(--gold-bronze);
            color: #121212;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(197, 160, 89, 0.5);
        }

        .mobile-menu-btn {
            display: none;
            background: transparent;
            border: none;
            color: var(--gold-bronze);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* HERO */
        .hero {
            background: linear-gradient(180deg, rgba(18,18,18,0.9) 0%, rgba(28,28,30,0.95) 100%), url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            padding: 4rem 0 3rem;
            text-align: left;
            position: relative;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(197, 160, 89, 0.15);
            color: var(--gold-amber);
            padding: 0.4rem 1.3rem;
            border-radius: 30px;
            font-weight: 600;
            font-size: 0.85rem;
            letter-spacing: 0.5px;
            margin-bottom: 1.2rem;
            border: 1px solid var(--border-subtle);
        }

        .hero h1 {
            font-family: var(--font-serif);
            font-size: 3rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 1rem;
            line-height: 1.3;
        }

        .hero p {
            font-size: 1.15rem;
            color: var(--text-soft);
            max-width: 700px;
            margin-bottom: 2rem;
        }

        /* DATA PANEL */
        .data-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0 1rem;
        }

        .data-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: var(--transition-smooth);
        }

        .data-card:hover {
            border-color: var(--gold-bronze);
            box-shadow: var(--shadow-gold);
        }

        .data-card i {
            font-size: 2rem;
            color: var(--gold-amber);
            margin-bottom: 0.8rem;
        }

        .data-card h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 0.4rem;
        }

        .data-card p {
            font-size: 0.9rem;
            color: var(--text-soft);
        }

        /* SERVICE MATRIX */
        .service-section {
            padding: 3.5rem 0;
        }

        .section-header {
            display: flex;
            align-items: center;
            gap: 1rem;
            margin-bottom: 2rem;
        }

        .section-header i {
            font-size: 2rem;
            color: var(--gold-amber);
        }

        .section-header h2 {
            font-family: var(--font-serif);
            font-size: 2.2rem;
            font-weight: 700;
            margin: 0;
        }

        .matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.8rem;
        }

        .matrix-item {
            background: var(--bg-card);
            border-left: 4px solid var(--gold-bronze);
            padding: 1.8rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
        }

        .matrix-item h4 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--gold-amber);
        }

        /* COMPARISON */
        .comparison-section {
            background: var(--bg-charcoal);
            padding: 3.5rem 0;
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .compare-table {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            margin-top: 1.5rem;
        }

        .compare-col {
            background: var(--bg-card);
            padding: 2rem;
            border-radius: var(--radius-md);
        }

        .compare-col.negative {
            border: 1px solid rgba(255, 80, 80, 0.4);
        }

        .compare-col.positive {
            border: 1px solid var(--gold-bronze);
        }

        .compare-col h5 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 1.2rem;
        }

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

        .compare-col li {
            margin-bottom: 0.8rem;
            display: flex;
            align-items: center;
            gap: 0.6rem;
        }

        /* FAQ */
        .faq-section {
            padding: 3.5rem 0;
        }

        .faq-item {
            background: var(--bg-card);
            border-radius: var(--radius-md);
            padding: 1.5rem 1.8rem;
            margin-bottom: 1rem;
            border: 1px solid transparent;
            transition: var(--transition-smooth);
        }

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

        .faq-item h4 {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            color: var(--gold-amber);
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, #1C1C1E, #121212);
            padding: 3.5rem 0;
            text-align: center;
            border-top: 2px solid var(--gold-bronze);
        }

        .cta-section h2 {
            font-family: var(--font-serif);
            font-size: 2.3rem;
        }

        .btn-cta-large {
            background: var(--gold-amber);
            color: #121212;
            padding: 1rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            margin-top: 1.5rem;
            display: inline-block;
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .btn-cta-large:hover {
            background: var(--gold-bronze);
            transform: scale(1.03);
            box-shadow: 0 10px 25px rgba(197, 160, 89, 0.4);
        }

        /* FOOTER */
        footer {
            background: var(--bg-charcoal);
            padding: 2rem 0;
            border-top: 1px solid var(--border-subtle);
        }

        .footer-links {
            display: flex;
            gap: 1.8rem;
            justify-content: center;
            margin-bottom: 1rem;
        }

        .footer-links a {
            color: var(--text-soft);
            text-decoration: none;
            transition: var(--transition-smooth);
        }

        .footer-links a:hover {
            color: var(--gold-amber);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 90px;
            width: 52px;
            height: 52px;
            background: rgba(18,18,18,0.85);
            backdrop-filter: blur(10px);
            border: 2px solid var(--gold-bronze);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--gold-amber);
            z-index: 99;
            box-shadow: 0 4px 20px rgba(197, 160, 89, 0.25);
            animation: float 3s infinite ease-in-out;
            transition: 0.2s;
        }

        .fab-left:hover {
            transform: scale(1.1);
            background: var(--gold-bronze);
            color: #121212;
        }

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

        /* RESPONSIVE */
        @media (max-width: 1024px) {
            .compare-table {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                background: var(--bg-charcoal);
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                padding: 1rem;
            }

            .nav-links.open {
                display: flex;
            }

            .mobile-menu-btn {
                display: block;
            }

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

        @media (max-width: 520px) {
            .data-grid {
                grid-template-columns: 1fr;
            }
        }