/* roulang page: index */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-light: #FFFFFF;
            --text-muted: #D1F2EB;
            --border-subtle: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 15px rgba(255, 215, 0, 0.2);
            --radius-card: 12px;
            --radius-btn: 8px;
            --spacing-section: 4rem 0;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
            --transition-base: all 0.3s ease;
        }

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

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

        /* Container Override */
        .grid-container {
            max-width: 1200px;
            padding-left: 1.25rem;
            padding-right: 1.25rem;
        }

        /* Typography */
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--accent-gold);
        }
        h1 { font-size: 2.8rem; }
        h2 { font-size: 2.2rem; }
        h3 { font-size: 1.6rem; }
        p { margin-bottom: 1rem; color: var(--text-muted); }

        /* Header & Navigation */
        .site-header {
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 100;
            padding: 0.75rem 0;
        }
        .nav-logo {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold) !important;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            transition: var(--transition-base);
        }
        .nav-logo:hover { opacity: 0.9; }
        .site-nav a {
            color: var(--text-muted);
            font-weight: 600;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-btn);
            transition: var(--transition-base);
            text-decoration: none;
        }
        .site-nav a:hover, .site-nav a.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.1);
        }
        .nav-cta {
            background: linear-gradient(135deg, #FFD700, #FFA000);
            color: #0A2E1C !important;
            font-weight: 800;
            padding: 0.6rem 1.5rem !important;
            border-radius: 50px;
            box-shadow: var(--shadow-gold);
        }
        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 215, 0, 0.4);
        }

        /* Mobile Menu */
        .menu-toggle {
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
            display: none;
        }
        @media screen and (max-width: 768px) {
            .menu-toggle { display: block; }
            .site-nav {
                display: none;
                flex-direction: column;
                width: 100%;
                background: var(--secondary-bg);
                border-radius: 0 0 12px 12px;
                padding: 1rem 0;
                margin-top: 0.75rem;
            }
            .site-nav.is-active { display: flex; }
            .site-nav a { padding: 0.8rem 1.5rem; border-bottom: 1px solid var(--border-subtle); }
            .nav-cta { display: inline-block; margin: 0.5rem 1.5rem; text-align: center; }
        }

        /* Hero */
        .hero-section {
            background: linear-gradient(135deg, #0A2E1C 0%, #123E25 50%, #0A2E1C 100%);
            position: relative;
            padding: 5rem 0 4rem;
            border-bottom: 2px solid var(--border-subtle);
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0; left: 0; right: 0; bottom: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.2;
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 2;
        }
        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            color: var(--accent-gold);
            text-shadow: 0 2px 10px rgba(0,0,0,0.5);
        }
        .hero-sub {
            font-size: 1.2rem;
            color: var(--text-muted);
            max-width: 750px;
            margin-top: 1.5rem;
        }
        .hero-stats {
            display: flex;
            gap: 2.5rem;
            margin-top: 2rem;
            flex-wrap: wrap;
        }
        .hero-stat-item {
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 1.2rem 1.8rem;
            text-align: center;
            backdrop-filter: blur(5px);
        }
        .hero-stat-num {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-gold);
        }
        .hero-cta-wrap {
            margin-top: 2.5rem;
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, #FFD700, #FF8C00);
            color: #0A2E1C;
            font-weight: 800;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            border: none;
            box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
            transition: var(--transition-base);
            cursor: pointer;
            text-decoration: none;
            display: inline-block;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(255, 215, 0, 0.6);
            color: #0A2E1C;
        }
        .btn-outline {
            background: transparent;
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.85rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            transition: var(--transition-base);
            text-decoration: none;
            display: inline-block;
        }
        .btn-outline:hover {
            background: rgba(255, 215, 0, 0.15);
            color: var(--accent-gold);
        }

        /* Section Common */
        .section {
            padding: var(--spacing-section);
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 0.75rem;
        }
        .section-desc {
            color: var(--text-muted);
            font-size: 1.1rem;
            max-width: 800px;
            margin-bottom: 2rem;
        }

        /* Promo Tier */
        .promo-card {
            background: linear-gradient(145deg, #123E25, #0A2E1C);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-card);
            padding: 1.5rem;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
        }
        .promo-card:hover {
            border-color: var(--accent-gold);
            box-shadow: var(--shadow-gold);
            transform: translateY(-5px);
        }
        .promo-badge {
            position: absolute;
            top: 15px;
            right: 15px;
            background: var(--accent-red);
            color: white;
            font-weight: 700;
            padding: 0.3rem 1rem;
            border-radius: 20px;
            font-size: 0.8rem;
        }

        /* Comparison Table */
        .compare-table {
            background: rgba(18, 62, 37, 0.7);
            border-radius: var(--radius-card);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
        }
        .compare-table th {
            background: var(--accent-gold);
            color: #0A2E1C;
            font-weight: 800;
        }
        .compare-table td, .compare-table th {
            padding: 1rem;
            border-bottom: 1px solid var(--border-subtle);
        }

        /* Guarantee Bar */
        .guarantee-item {
            display: flex;
            align-items: center;
            gap: 0.8rem;
            padding: 1rem;
            background: rgba(255, 215, 0, 0.05);
            border-radius: var(--radius-card);
            border-left: 4px solid var(--accent-gold);
        }

        /* News / Latest List */
        .news-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 0.8rem 0;
            border-bottom: 1px dashed var(--border-subtle);
            flex-wrap: wrap;
        }
        .news-title {
            font-weight: 700;
            color: var(--text-light);
            text-decoration: none;
            transition: var(--transition-base);
        }
        .news-title:hover { color: var(--accent-gold); }
        .news-date {
            color: var(--text-muted);
            font-size: 0.85rem;
            white-space: nowrap;
        }

        /* Bubble Reviews */
        .bubble {
            background: #123E25;
            border-radius: 20px 20px 20px 5px;
            padding: 1.2rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-subtle);
            position: relative;
        }
        .bubble-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #0A2E1C;
            margin-right: 0.8rem;
        }

        /* Beginner Steps */
        .step-card {
            background: #123E25;
            border-radius: var(--radius-card);
            padding: 1.8rem;
            border-top: 4px solid var(--accent-gold);
            transition: var(--transition-base);
        }
        .step-card:hover {
            background: #1a4d2e;
            border-top-color: var(--accent-red);
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 5rem;
            z-index: 99;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #FFD700, #B8860B);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0A2E1C;
            font-size: 1.8rem;
            cursor: pointer;
            transition: all 0.3s ease;
            opacity: 0.8;
            border: 2px solid #FFD700;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 25px rgba(255, 215, 0, 0.7);
        }

        /* Footer */
        .site-footer {
            background: #051A10;
            border-top: 2px solid var(--border-subtle);
            padding: 2.5rem 0;
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-links a {
            color: var(--text-muted);
            text-decoration: none;
            margin-right: 1.5rem;
            transition: var(--transition-base);
        }
        .footer-links a:hover { color: var(--accent-gold); }

        @media screen and (max-width: 640px) {
            h1 { font-size: 2rem; }
            .hero-title { font-size: 2.2rem; }
            .hero-stats { flex-direction: column; gap: 1rem; }
        }

/* roulang page: article */
:root {
            --bg-primary: #0A0E17;
            --bg-secondary: #111827;
            --bg-card: #1A1F2E;
            --accent-gold: #E2B659;
            --accent-red: #C0392B;
            --accent-green: #27AE60;
            --text-primary: #F0F0F0;
            --text-secondary: #B0B5C0;
            --text-muted: #6B7280;
            --border-color: #2D3340;
            --border-gold: #E2B659;
            --shadow-card: 0 4px 20px rgba(0,0,0,0.5);
            --shadow-gold: 0 2px 12px rgba(226,182,89,0.25);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --font-heading: 'Georgia', 'Times New Roman', serif;
            --font-body: 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

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

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: color 0.2s ease;
        }

        a:hover {
            color: #f0d68a;
        }

        img {
            max-width: 100%;
            height: auto;
            border: 0;
        }

        button, .button {
            cursor: pointer;
            font-family: inherit;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            background: rgba(10,14,23,0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 12px 0;
        }

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

        .logo {
            font-family: var(--font-heading);
            font-size: 1.6rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.5px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }

        .logo i {
            font-size: 1.8rem;
            color: var(--accent-gold);
        }

        .logo:hover {
            color: #f0d68a;
        }

        .site-nav {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
        }

        .site-nav a {
            color: var(--text-secondary);
            font-weight: 500;
            text-decoration: none;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
            transition: color 0.2s, border-color 0.2s;
            font-size: 0.95rem;
        }

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

        .nav-cta {
            background: linear-gradient(135deg, #E2B659 0%, #C5923A 100%);
            color: #1A1A1A !important;
            padding: 8px 20px !important;
            border-radius: 30px !important;
            font-weight: 700 !important;
            border: none !important;
            transition: transform 0.2s, box-shadow 0.2s !important;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        .nav-cta:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 18px rgba(226,182,89,0.4);
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--accent-gold);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        @media (max-width: 900px) {
            .menu-toggle {
                display: block;
            }
            .site-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: var(--bg-secondary);
                margin-top: 12px;
                padding: 16px;
                border-radius: var(--radius-md);
                border: 1px solid var(--border-color);
                gap: 10px;
            }
            .site-nav.show {
                display: flex;
            }
            .site-nav a {
                border-bottom: none;
                padding: 10px 12px;
                border-radius: var(--radius-sm);
            }
            .site-nav a.active {
                background: rgba(226,182,89,0.1);
            }
            .nav-cta {
                width: fit-content;
                margin-top: 6px;
            }
        }

        /* Article Layout */
        .article-page {
            padding: 40px 0 60px;
        }

        .article-wrapper {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 40px;
            align-items: start;
        }

        @media (max-width: 900px) {
            .article-wrapper {
                grid-template-columns: 1fr;
            }
        }

        .article-main {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .article-hero-image {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 30px;
            border: 2px solid var(--border-gold);
            box-shadow: var(--shadow-gold);
        }

        .article-hero-image img {
            width: 100%;
            display: block;
            object-fit: cover;
            aspect-ratio: 16/9;
        }

        .article-category-tag {
            display: inline-block;
            background: rgba(226,182,89,0.15);
            color: var(--accent-gold);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 16px;
            border: 1px solid rgba(226,182,89,0.3);
        }

        .article-title {
            font-family: var(--font-heading);
            font-size: 2.4rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 0 0 12px;
            line-height: 1.3;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
            flex-wrap: wrap;
        }

        .article-meta i {
            color: var(--accent-gold);
        }

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

        .article-body h2 {
            font-family: var(--font-heading);
            color: var(--accent-gold);
            font-size: 1.6rem;
            margin: 28px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid rgba(226,182,89,0.25);
        }

        .article-body h3 {
            font-family: var(--font-heading);
            color: var(--text-primary);
            font-size: 1.25rem;
            margin: 20px 0 10px;
        }

        .article-body p {
            margin-bottom: 16px;
        }

        .article-body ul, .article-body ol {
            margin: 12px 0 20px 24px;
            padding-left: 8px;
        }

        .article-body li {
            margin-bottom: 8px;
            position: relative;
        }

        .article-body strong {
            color: var(--accent-gold);
            font-weight: 600;
        }

        .article-body blockquote {
            background: rgba(226,182,89,0.05);
            border-left: 4px solid var(--accent-gold);
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 20px 0;
            background: var(--bg-secondary);
            border-radius: var(--radius-sm);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .article-body th, .article-body td {
            padding: 12px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
        }

        .article-body th {
            background: rgba(226,182,89,0.15);
            color: var(--accent-gold);
            font-weight: 700;
        }

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

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

        .sidebar-card h4 {
            font-family: var(--font-heading);
            color: var(--accent-gold);
            font-size: 1.15rem;
            margin: 0 0 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border-color);
        }

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

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

        .sidebar-card ul li a {
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
            padding: 8px 10px;
            border-radius: var(--radius-sm);
            transition: background 0.2s, color 0.2s;
            font-size: 0.9rem;
        }

        .sidebar-card ul li a:hover {
            background: rgba(226,182,89,0.1);
            color: var(--accent-gold);
        }

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

        .sidebar-cta {
            background: linear-gradient(135deg, #1E2A3A, #1A1F2E);
            border: 2px solid var(--border-gold);
            text-align: center;
        }

        .sidebar-cta h4 {
            border-bottom: none;
            margin-bottom: 8px;
        }

        .sidebar-cta .button {
            background: var(--accent-gold);
            color: #1A1A1A;
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 30px;
            margin-top: 12px;
            display: inline-block;
            transition: transform 0.2s, box-shadow 0.2s;
        }

        .sidebar-cta .button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(226,182,89,0.4);
        }

        /* Article CTA */
        .article-cta {
            background: linear-gradient(135deg, #1E2A3A 0%, #0F1724 100%);
            border: 2px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 32px;
            margin: 36px 0 0;
            text-align: center;
        }

        .article-cta h3 {
            font-family: var(--font-heading);
            color: var(--accent-gold);
            font-size: 1.4rem;
            margin: 0 0 8px;
        }

        .article-cta p {
            color: var(--text-secondary);
            margin-bottom: 16px;
        }

        .btn-cta-gold {
            background: linear-gradient(135deg, #E2B659 0%, #C5923A 100%);
            color: #1A1A1A;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 30px;
            display: inline-block;
            transition: transform 0.2s, box-shadow 0.2s;
            text-decoration: none;
            font-size: 1rem;
        }

        .btn-cta-gold:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 24px rgba(226,182,89,0.45);
            color: #1A1A1A;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 2px solid var(--border-gold);
            padding: 40px 0 24px;
            margin-top: 40px;
        }

        .site-footer h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .site-footer .footer-links {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .site-footer .footer-links a {
            color: var(--text-secondary);
            padding: 4px 0;
            transition: color 0.2s;
        }

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

        @media (max-width: 768px) {
            .article-main {
                padding: 20px;
            }
            .article-title {
                font-size: 1.8rem;
            }
            .article-body {
                font-size: 0.95rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #062315;
            --secondary-bg: #0B3C25;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-white: #FFFDF0;
            --text-light-green: #C5E2D2;
            --border-soft: rgba(255,204,0,0.15);
            --shadow-card: 0 6px 24px rgba(0,0,0,0.4);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 2rem;
            --spacing-lg: 3.5rem;
            --spacing-xl: 5rem;
            --transition-smooth: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
        }

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

        body {
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

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

        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition-smooth);
        }

        a:hover {
            color: var(--accent-lime);
            text-decoration: none;
        }

        h1, h2, h3, h4, h5 {
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: var(--spacing-sm);
        }

        h1 {
            font-size: 2.5rem;
            color: var(--accent-gold);
        }

        h2 {
            font-size: 1.9rem;
            color: var(--text-white);
            position: relative;
            padding-bottom: 0.5rem;
        }

        h2::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: var(--accent-gold);
            border-radius: 2px;
        }

        h3 {
            font-size: 1.4rem;
            color: var(--accent-lime);
        }

        .section-title {
            text-align: left;
            margin-bottom: var(--spacing-lg);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 0.5rem;
            padding: 0.9rem 2.2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            border: none;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold), #FFB300);
            color: #062315;
            box-shadow: 0 8px 20px rgba(255,204,0,0.35);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, #FFD633, #FFC400);
            transform: translateY(-3px);
            box-shadow: 0 14px 28px rgba(255,204,0,0.5);
            color: #062315;
        }

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

        .btn-outline:hover {
            background: var(--accent-gold);
            color: #062315;
            transform: translateY(-2px);
        }

        .site-header {
            background: var(--secondary-bg);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 4px 18px rgba(0,0,0,0.5);
            border-bottom: 2px solid var(--border-soft);
        }

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

        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            letter-spacing: 0.8px;
            white-space: nowrap;
        }

        .logo i {
            margin-right: 0.4rem;
            color: var(--accent-lime);
        }

        .site-nav a {
            color: var(--text-light-green);
            margin-left: 1.8rem;
            font-weight: 600;
            padding: 0.4rem 0;
            border-bottom: 2px solid transparent;
            transition: var(--transition-smooth);
            white-space: nowrap;
        }

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

        .nav-cta {
            background: var(--accent-gold);
            color: #062315 !important;
            padding: 0.5rem 1.6rem !important;
            border-radius: 40px;
            font-weight: 700;
            margin-left: 2rem !important;
            border-bottom: none !important;
        }

        .nav-cta:hover {
            background: var(--accent-lime);
            color: #062315 !important;
            border-bottom: none !important;
        }

        .hero-section {
            background: linear-gradient(135deg, #062315 0%, #0B3C25 60%, #0A2E1C 100%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            position: relative;
            overflow: hidden;
            border-bottom: 3px solid var(--border-soft);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -80px;
            width: 420px;
            height: 420px;
            background: radial-gradient(circle, rgba(255,204,0,0.12) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }

        .hero-text {
            flex: 1 1 500px;
        }

        .hero-text h1 {
            font-size: 3rem;
            margin-bottom: 1.2rem;
            line-height: 1.2;
        }

        .hero-text .lead {
            font-size: 1.25rem;
            color: var(--text-light-green);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .hero-visual {
            flex: 1 1 380px;
            background: rgba(0,0,0,0.25);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            border: 1px solid var(--border-soft);
            backdrop-filter: blur(4px);
        }

        .download-card {
            background: rgba(11,60,37,0.7);
            border-radius: var(--radius-md);
            padding: 2rem;
            border: 1px dashed var(--accent-gold);
        }

        .download-card h3 {
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 2rem;
            margin: var(--spacing-lg) 0;
        }

        .strategy-card {
            background: var(--secondary-bg);
            border-radius: var(--radius-md);
            padding: 1.8rem;
            border: 1px solid var(--border-soft);
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            gap: 0.8rem;
            box-shadow: var(--shadow-card);
        }

        .strategy-card:hover {
            border-color: var(--accent-gold);
            transform: translateY(-6px);
            box-shadow: 0 16px 36px rgba(255,204,0,0.2);
        }

        .strategy-icon {
            font-size: 2.8rem;
            color: var(--accent-gold);
            margin-bottom: 0.4rem;
        }

        .strategy-card h4 {
            font-size: 1.3rem;
            color: var(--accent-lime);
            margin: 0;
        }

        .strategy-card p {
            color: var(--text-light-green);
            margin: 0;
            line-height: 1.65;
            flex: 1;
        }

        .steps-panel {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 2.2rem;
            margin: var(--spacing-lg) 0;
            border-left: 5px solid var(--accent-gold);
        }

        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 1.5rem;
            padding: 1.2rem 0;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }

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

        .step-number {
            background: var(--accent-gold);
            color: #062315;
            font-weight: 800;
            font-size: 1.3rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }

        .step-body h4 {
            margin-bottom: 0.3rem;
            color: var(--text-white);
        }

        .step-body p {
            color: var(--text-light-green);
            margin: 0;
        }

        .faq-section {
            margin: var(--spacing-lg) 0;
        }

        .faq-item {
            background: var(--secondary-bg);
            border-radius: var(--radius-sm);
            padding: 1.3rem 1.6rem;
            margin-bottom: 1rem;
            border: 1px solid var(--border-soft);
            cursor: pointer;
            transition: var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--accent-gold);
            background: rgba(11,60,37,0.9);
        }

        .faq-question {
            font-weight: 700;
            color: var(--accent-gold);
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
        }

        .faq-answer {
            color: var(--text-light-green);
            margin-top: 0.8rem;
            line-height: 1.7;
            display: none;
        }

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

        .cta-block {
            background: linear-gradient(135deg, #0B3C25, #062315);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            border: 2px solid var(--accent-gold);
            margin: var(--spacing-xl) 0 var(--spacing-lg);
        }

        .cta-block h2 {
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .cta-block p {
            font-size: 1.15rem;
            max-width: 700px;
            margin: 0 auto 2rem;
            color: var(--text-light-green);
        }

        .site-footer {
            background: #041C0E;
            padding: 3rem 0 2rem;
            border-top: 3px solid var(--border-soft);
            margin-top: var(--spacing-xl);
        }

        .site-footer h4 {
            color: var(--accent-gold);
            margin-bottom: 0.8rem;
        }

        .site-footer p {
            color: var(--text-light-green);
            font-size: 0.9rem;
            margin: 0;
        }

        .footer-links {
            display: flex;
            flex-direction: column;
            gap: 0.5rem;
        }

        .footer-links a {
            color: var(--text-light-green);
            font-weight: 500;
        }

        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 6px;
        }

        .fab-left {
            position: fixed;
            left: 1.2rem;
            bottom: 5rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(6,35,21,0.85);
            backdrop-filter: blur(12px);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            border: 2px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255,204,0,0.3);
            cursor: pointer;
            transition: var(--transition-smooth);
            color: var(--accent-gold);
            font-size: 1.6rem;
            animation: float 3s infinite ease-in-out;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255,204,0,0.5);
            background: var(--secondary-bg);
        }

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

        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            .hero-text h1 { font-size: 2.5rem; }
            .site-nav a { margin-left: 1rem; }
        }

        @media (max-width: 768px) {
            .header-inner { flex-direction: column; align-items: flex-start; gap: 0.8rem; }
            .site-nav { display: flex; flex-wrap: wrap; gap: 0.8rem; }
            .site-nav a { margin-left: 0; }
            .hero-text h1 { font-size: 2.2rem; }
            .hero-content { flex-direction: column; }
            .fab-left { bottom: 4rem; left: 0.8rem; }
        }

/* roulang page: category2 */
:root {
            --primary-bg: #121212;
            --secondary-bg: #1C1C1E;
            --accent-gold: #C5A059;
            --accent-amber: #FFBF00;
            --text-white: #F5F5F7;
            --text-muted-gold: #D4AC0D;
            --border-gold: rgba(197, 160, 89, 0.35);
            --shadow-card: 0 2px 14px rgba(0, 0, 0, 0.5);
            --radius-md: 12px;
            --radius-lg: 18px;
            --spacing-section: 4.5rem;
            --transition-base: 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            margin: 0;
            padding: 0;
            font-family: 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
        }

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

        a {
            transition: color var(--transition-base), background var(--transition-base), opacity var(--transition-base);
        }

        button,
        .btn {
            cursor: pointer;
            font-family: inherit;
            transition: all var(--transition-base);
        }

        .grid-container {
            max-width: 1200px;
        }

        .site-header {
            background: rgba(18, 18, 18, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 60;
            padding: 0.85rem 0;
        }

        .site-logo {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: 0.02em;
            white-space: nowrap;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }

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

        .site-logo:hover {
            color: var(--accent-amber);
        }

        .site-nav a {
            color: var(--text-white);
            font-weight: 500;
            padding: 0.5rem 1rem;
            border-radius: 8px;
            margin: 0 0.15rem;
            font-size: 0.95rem;
            text-decoration: none;
            display: inline-block;
        }

        .site-nav a:hover {
            color: var(--accent-gold);
            background: rgba(197, 160, 89, 0.08);
        }

        .site-nav a.active {
            color: var(--accent-amber);
            background: rgba(197, 160, 89, 0.12);
            font-weight: 600;
        }

        .site-nav .nav-cta {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212 !important;
            font-weight: 700;
            padding: 0.55rem 1.35rem;
            border-radius: 30px;
            margin-left: 0.8rem;
            box-shadow: 0 4px 14px rgba(197, 160, 89, 0.28);
        }

        .site-nav .nav-cta:hover {
            background: var(--accent-amber);
            box-shadow: 0 6px 18px rgba(255, 191, 0, 0.4);
            color: #121212 !important;
        }

        .burger-btn {
            background: transparent;
            border: none;
            color: var(--accent-gold);
            font-size: 1.7rem;
            padding: 0.25rem 0.5rem;
            display: none;
        }

        .mobile-menu {
            background: rgba(18, 18, 18, 0.97);
            backdrop-filter: blur(16px);
            border-top: 1px solid var(--border-gold);
            display: none;
            flex-direction: column;
            padding: 0.8rem 1rem;
        }

        .mobile-menu a {
            color: var(--text-white);
            padding: 0.7rem 0.8rem;
            border-radius: 8px;
            font-weight: 500;
            text-decoration: none;
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--accent-amber);
            background: rgba(197, 160, 89, 0.08);
        }

        .hero-section {
            background: linear-gradient(135deg, #0f0f0f 0%, #1a1a1a 50%, #121212 100%);
            position: relative;
            overflow: hidden;
            padding: 4rem 0 3.5rem;
            border-bottom: 1px solid rgba(197, 160, 89, 0.2);
        }

        .hero-section::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 38%;
            height: 100%;
            background: url('/assets/images/backpic/back-2.png') center/cover no-repeat;
            opacity: 0.12;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(197, 160, 89, 0.15);
            color: var(--accent-amber);
            border: 1px solid var(--border-gold);
            border-radius: 30px;
            padding: 0.35rem 1.3rem;
            font-weight: 600;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            margin-bottom: 1.2rem;
        }

        .hero-title {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 1rem;
        }

        .hero-title span {
            color: var(--accent-gold);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: #D5D8DC;
            max-width: 640px;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        .countdown-box {
            background: var(--secondary-bg);
            border: 1px solid var(--border-gold);
            border-radius: 14px;
            padding: 1.2rem 1.8rem;
            display: inline-flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .countdown-label {
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.06em;
        }

        .countdown-timer {
            display: flex;
            gap: 0.8rem;
            align-items: center;
        }

        .cd-digit {
            background: #0a0a0a;
            border: 1px solid var(--accent-gold);
            border-radius: 8px;
            padding: 0.4rem 0.7rem;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-amber);
            min-width: 48px;
            text-align: center;
        }

        .cd-sep {
            color: var(--accent-gold);
            font-weight: 700;
            font-size: 1.3rem;
        }

        .subscribe-btn {
            background: var(--accent-gold);
            color: #121212;
            font-weight: 700;
            padding: 0.7rem 1.8rem;
            border-radius: 30px;
            border: none;
            font-size: 1rem;
            box-shadow: 0 4px 16px rgba(197, 160, 89, 0.25);
        }

        .subscribe-btn:hover {
            background: var(--accent-amber);
            box-shadow: 0 6px 22px rgba(255, 191, 0, 0.45);
        }

        .section-title {
            font-size: 1.9rem;
            font-weight: 700;
            margin-bottom: 0.8rem;
            color: #fff;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -6px;
            width: 55px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 4px;
        }

        .section-sub {
            color: #A6ACAF;
            font-size: 1rem;
            margin-bottom: 2.5rem;
        }

        .strategy-card {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 1.8rem 1.6rem;
            border: 1px solid rgba(197, 160, 89, 0.2);
            height: 100%;
            transition: border-color var(--transition-base), box-shadow var(--transition-base);
        }

        .strategy-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 28px rgba(197, 160, 89, 0.12);
        }

        .strategy-icon {
            font-size: 2.2rem;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .strategy-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 0.6rem;
        }

        .strategy-card p {
            color: #B0B5BA;
            font-size: 0.95rem;
            line-height: 1.55;
        }

        .formula-highlight {
            background: var(--secondary-bg);
            border-left: 4px solid var(--accent-gold);
            border-radius: 0 12px 12px 0;
            padding: 1.4rem 1.8rem;
            margin: 2rem 0;
        }

        .formula-highlight .formula-text {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-amber);
            font-family: 'Courier New', monospace;
        }

        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .step-list li {
            padding: 0.9rem 0 0.9rem 2.4rem;
            position: relative;
            border-bottom: 1px solid rgba(197, 160, 89, 0.15);
            color: #D5D8DC;
            font-size: 0.98rem;
        }

        .step-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 1.15rem;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-gold);
        }

        .faq-block {
            background: var(--secondary-bg);
            border-radius: var(--radius-lg);
            padding: 1.6rem 1.8rem;
            border: 1px solid rgba(197, 160, 89, 0.18);
            margin-bottom: 1.2rem;
            transition: border-color var(--transition-base);
        }

        .faq-block:hover {
            border-color: var(--accent-gold);
        }

        .faq-block h4 {
            font-weight: 700;
            color: var(--accent-amber);
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }

        .faq-block p {
            color: #A6ACAF;
            margin: 0;
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .cta-section {
            background: linear-gradient(135deg, #1C1C1E 0%, #121212 100%);
            border-top: 1px solid var(--border-gold);
            border-bottom: 1px solid var(--border-gold);
            padding: 3.5rem 0;
            text-align: center;
        }

        .cta-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 0.8rem;
        }

        .cta-btn-large {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: #121212;
            font-weight: 700;
            padding: 0.9rem 2.5rem;
            border-radius: 30px;
            font-size: 1.15rem;
            border: none;
            box-shadow: 0 6px 22px rgba(197, 160, 89, 0.3);
            display: inline-block;
            margin-top: 1.2rem;
            text-decoration: none;
        }

        .cta-btn-large:hover {
            background: var(--accent-amber);
            box-shadow: 0 8px 28px rgba(255, 191, 0, 0.5);
            color: #121212;
        }

        .site-footer {
            background: #0a0a0a;
            border-top: 1px solid var(--border-gold);
            padding: 2.5rem 0;
            color: #A6ACAF;
            font-size: 0.9rem;
        }

        .site-footer h4 {
            color: var(--accent-gold);
            font-weight: 700;
            margin-bottom: 0.6rem;
        }

        .footer-links a {
            color: #A6ACAF;
            display: inline-block;
            margin-right: 1.5rem;
            margin-bottom: 0.4rem;
            text-decoration: none;
        }

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

        .fab-float {
            position: fixed;
            left: 1.2rem;
            bottom: 5.5rem;
            z-index: 70;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: var(--secondary-bg);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-amber);
            box-shadow: 0 4px 20px rgba(197, 160, 89, 0.25);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            opacity: 0.75;
        }

        .fab-float:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 6px 26px rgba(255, 191, 0, 0.45);
        }

        @media screen and (max-width: 1024px) {
            .hero-title {
                font-size: 2.1rem;
            }

            .hero-section::after {
                width: 45%;
            }
        }

        @media screen and (max-width: 768px) {
            .site-nav a {
                display: none;
            }

            .site-nav .nav-cta {
                display: inline-block;
            }

            .burger-btn {
                display: inline-block;
            }

            .mobile-menu {
                display: none;
            }

            .mobile-menu.open {
                display: flex;
            }

            .hero-section {
                padding: 2.8rem 0 2.5rem;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .countdown-box {
                flex-direction: column;
                align-items: flex-start;
                width: 100%;
            }

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

            .fab-float {
                bottom: 6rem;
                left: 0.8rem;
            }
        }

        @media screen and (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }

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

            .strategy-card {
                padding: 1.3rem 1.2rem;
            }
        }