/* roulang page: index */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        .btn-login:hover {
            background: rgba(245,158,11,0.1);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            padding: 8rem 0 5rem;
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #052215 100%);
            position: relative;
            overflow: hidden;
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 70%;
            height: 150%;
            background: radial-gradient(circle, rgba(245,158,11,0.08) 0%, transparent 70%);
            border-radius: 50%;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
            position: relative;
            z-index: 2;
        }

        .hero-content h1 {
            font-size: 3rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 1.25rem;
            letter-spacing: -0.03em;
        }
        .hero-content h1 span {
            color: var(--accent-gold);
        }

        .hero-content .hero-desc {
            font-size: 1.1rem;
            line-height: 1.7;
            color: var(--text-mint);
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .invite-progress {
            background: rgba(6,46,32,0.7);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            margin-bottom: 1.5rem;
        }
        .invite-progress .progress-label {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 0.75rem;
            font-weight: 600;
        }
        .progress-bar {
            height: 10px;
            background: rgba(245,158,11,0.15);
            border-radius: 10px;
            overflow: hidden;
        }
        .progress-fill {
            height: 100%;
            width: 65%;
            background: linear-gradient(90deg, var(--accent-gold), #FCD34D);
            border-radius: 10px;
            transition: width 0.6s ease;
        }
        .reward-preview {
            display: flex;
            gap: 0.5rem;
            margin-top: 0.5rem;
            font-size: 0.85rem;
            color: var(--text-warm);
        }
        .reward-preview i {
            color: var(--accent-gold);
        }

        .hero-btns {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(245,158,11,0.35);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245,158,11,0.5);
        }
        .btn-secondary {
            background: transparent;
            border: 1.5px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
        }
        .btn-secondary:hover {
            background: rgba(245,158,11,0.1);
        }

        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual img {
            max-height: 420px;
            border-radius: var(--radius-xl);
            box-shadow: 0 20px 60px rgba(0,0,0,0.4), 0 0 40px rgba(245,158,11,0.1);
        }

        /* Section Commons */
        .section {
            padding: 5rem 0;
        }
        .section-header {
            margin-bottom: 3rem;
        }
        .section-header h2 {
            font-size: 2.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }
        .section-header p {
            font-size: 1.05rem;
            color: var(--text-mint);
            max-width: 650px;
        }

        /* Capability Cards */
        .capability-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 1.75rem;
        }
        .capability-card {
            background: linear-gradient(145deg, #062E20, #052215);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 2rem 1.75rem;
            transition: var(--transition-base);
        }
        .capability-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 16px 40px rgba(0,0,0,0.4);
            border-color: rgba(245,158,11,0.4);
        }
        .capability-icon {
            font-size: 2.25rem;
            color: var(--accent-gold);
            margin-bottom: 1.25rem;
        }
        .capability-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.6rem;
        }
        .capability-card p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.6;
        }

        /* Progress / Roadmap List */
        .roadmap-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
            max-width: 800px;
        }
        .roadmap-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
            background: rgba(6,46,32,0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
        }
        .roadmap-item:hover {
            border-color: rgba(245,158,11,0.5);
            background: rgba(6,46,32,0.8);
        }
        .roadmap-status {
            min-width: 48px;
            height: 48px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            background: rgba(245,158,11,0.1);
            color: var(--accent-gold);
        }
        .roadmap-item.completed .roadmap-status {
            background: rgba(16,185,129,0.15);
            color: var(--accent-green);
        }
        .roadmap-content h3 {
            font-weight: 700;
            font-size: 1.1rem;
            color: var(--text-white);
            margin-bottom: 0.3rem;
        }
        .roadmap-content p {
            color: var(--text-mint);
            font-size: 0.9rem;
        }

        /* Changelog */
        .changelog-item {
            background: rgba(6,46,32,0.4);
            border-left: 3px solid var(--accent-gold);
            padding: 1.25rem 1.5rem;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-bottom: 1rem;
        }
        .changelog-item .version-tag {
            display: inline-block;
            background: var(--accent-gold);
            color: #031A12;
            font-weight: 700;
            font-size: 0.8rem;
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.5rem;
        }

        /* News Section */
        .news-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 2.5rem;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1.5rem;
        }
        .news-item {
            display: flex;
            gap: 1.25rem;
            background: rgba(6,46,32,0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.25rem;
            transition: var(--transition-base);
        }
        .news-item:hover {
            border-color: rgba(245,158,11,0.4);
        }
        .news-thumb {
            width: 120px;
            height: 80px;
            object-fit: cover;
            border-radius: var(--radius-md);
            flex-shrink: 0;
        }
        .news-info h4 {
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.35rem;
            font-size: 1rem;
        }
        .news-info .news-excerpt {
            font-size: 0.85rem;
            color: var(--text-mint);
            line-height: 1.5;
        }
        .news-sidebar {
            background: rgba(6,46,32,0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 1.75rem;
            height: fit-content;
        }
        .news-sidebar h3 {
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--accent-gold);
            margin-bottom: 1.25rem;
        }
        .sidebar-item {
            display: flex;
            gap: 0.75rem;
            margin-bottom: 1rem;
            padding-bottom: 1rem;
            border-bottom: 1px solid rgba(245,158,11,0.1);
        }
        .sidebar-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        /* Subscribe */
        .subscribe-box {
            background: linear-gradient(135deg, rgba(245,158,11,0.08), rgba(16,185,129,0.08));
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            text-align: center;
        }
        .subscribe-form {
            display: flex;
            max-width: 480px;
            margin: 1.5rem auto 0;
            gap: 0.75rem;
        }
        .subscribe-form input {
            flex: 1;
            padding: 0.85rem 1.25rem;
            border-radius: 50px;
            background: rgba(6,46,32,0.7);
            border: 1px solid var(--border-subtle);
            color: var(--text-white);
            font-size: 0.95rem;
            outline: none;
        }
        .subscribe-form input:focus {
            border-color: var(--accent-gold);
        }

        /* Misconception Clarification */
        .misconception-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            max-width: 800px;
        }
        .misconception-item {
            background: rgba(6,46,32,0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
        }
        .misconception-item .wrong {
            color: #F87171;
            font-weight: 600;
            text-decoration: line-through;
            margin-bottom: 0.25rem;
        }
        .misconception-item .correct {
            color: var(--accent-green);
            font-weight: 600;
        }

        /* Pricing Tiers */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .pricing-card {
            background: rgba(6,46,32,0.5);
            border: 1.5px solid transparent;
            border-radius: var(--radius-xl);
            padding: 2rem 1.5rem;
            transition: var(--transition-base);
            text-align: center;
        }
        .pricing-card.featured {
            border-color: var(--accent-gold);
            background: rgba(245,158,11,0.05);
            position: relative;
        }
        .pricing-card.featured::before {
            content: 'Phổ biến nhất';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--accent-gold);
            color: #031A12;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.25rem 1rem;
            border-radius: 50px;
        }
        .pricing-card h3 {
            font-weight: 700;
            font-size: 1.3rem;
            color: var(--text-white);
        }
        .pricing-card .price {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin: 1rem 0;
        }

        /* Integration Ecosystem */
        .ecosystem-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
            gap: 1rem;
        }
        .ecosystem-item {
            background: rgba(6,46,32,0.6);
            border-radius: var(--radius-md);
            padding: 1.25rem;
            text-align: center;
            font-weight: 600;
            color: var(--text-mint);
            border: 1px solid var(--border-subtle);
        }

        /* Seasonal Banner */
        .seasonal-banner {
            background: linear-gradient(135deg, #450A0A, #2B0404);
            border: 1px solid rgba(245,158,11,0.3);
            border-radius: var(--radius-xl);
            padding: 2.5rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1.5rem;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #031A12, #062E20);
            border: 2px solid var(--accent-gold);
            box-shadow: 0 6px 25px rgba(245,158,11,0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
            cursor: pointer;
            opacity: 0.85;
            transition: var(--transition-base);
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 10px 35px rgba(245,158,11,0.5);
        }
        @keyframes fabFloat {
            0%,100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }

        /* Footer */
        .site-footer {
            background: #020F0A;
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 2.5rem;
        }
        .footer-col h4 {
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        .footer-col a {
            display: block;
            color: var(--text-mint);
            font-size: 0.9rem;
            margin-bottom: 0.5rem;
        }
        .footer-bottom {
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(245,158,11,0.1);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 1rem;
            font-size: 0.85rem;
            color: var(--text-mint);
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
            }
            .hero-content h1 {
                font-size: 2.5rem;
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .hero-content h1 {
                font-size: 2rem;
            }
            .section-header h2 {
                font-size: 1.75rem;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .hero-btns {
                flex-direction: column;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: auto;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(245,158,11,0.1);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }

        .help-hero {
            padding: 7rem 0 4rem;
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #052215 100%);
            position: relative;
            overflow: hidden;
            text-align: center;
        }

        .help-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            left: 50%;
            transform: translateX(-50%);
            width: 60%;
            height: 120%;
            background: radial-gradient(circle, rgba(245,158,11,0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .help-hero-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
            margin: 0 auto;
        }

        .help-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: -0.03em;
        }

        .help-hero h1 span {
            color: var(--accent-gold);
        }

        .help-hero .help-desc {
            font-size: 1.05rem;
            color: var(--text-mint);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .search-box {
            display: flex;
            align-items: center;
            background: rgba(255,255,255,0.08);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            padding: 0.4rem 0.4rem 0.4rem 1.5rem;
            max-width: 550px;
            margin: 0 auto 1.5rem;
            transition: var(--transition-base);
        }

        .search-box:focus-within {
            border-color: var(--accent-gold);
            box-shadow: 0 0 20px rgba(245,158,11,0.2);
        }

        .search-box input {
            flex: 1;
            background: transparent;
            border: none;
            outline: none;
            color: var(--text-white);
            font-size: 0.95rem;
            padding: 0.6rem 0;
        }

        .search-box input::placeholder {
            color: rgba(167,243,208,0.5);
        }

        .search-box button {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            border: none;
            border-radius: 50px;
            padding: 0.65rem 1.5rem;
            font-weight: 700;
            font-size: 0.9rem;
        }

        .help-chips {
            display: flex;
            flex-wrap: wrap;
            justify-content: center;
            gap: 0.75rem;
            position: relative;
            z-index: 2;
        }

        .chip {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            background: rgba(245,158,11,0.08);
            border: 1px solid var(--border-subtle);
            border-radius: 50px;
            color: var(--text-mint);
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-base);
            white-space: nowrap;
        }

        .chip:hover {
            background: rgba(245,158,11,0.2);
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            transform: translateY(-1px);
        }

        .section {
            padding: 4.5rem 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .section-header h2 span {
            color: var(--accent-gold);
        }

        .section-header p {
            font-size: 1rem;
            color: var(--text-mint);
            line-height: 1.6;
            max-width: 650px;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 1.5rem;
        }

        .strategy-card {
            background: rgba(6,46,32,0.6);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 2rem;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .strategy-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 12px 40px rgba(245,158,11,0.15);
            transform: translateY(-4px);
        }

        .strategy-card .card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-md);
            background: linear-gradient(135deg, rgba(245,158,11,0.15), rgba(16,185,129,0.1));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-gold);
        }

        .strategy-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin: 0;
        }

        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin: 0;
        }

        .strategy-card .card-tag {
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-green);
            background: rgba(16,185,129,0.1);
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            width: fit-content;
        }

        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .scenario-item {
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.5rem;
            background: rgba(6,46,32,0.4);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            transition: var(--transition-base);
        }

        .scenario-item:hover {
            border-color: var(--accent-gold);
            background: rgba(6,46,32,0.7);
        }

        .scenario-num {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1rem;
            flex-shrink: 0;
        }

        .scenario-content h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.4rem;
        }

        .scenario-content p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin: 0;
        }

        .video-showcase {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }

        .video-showcase .showcase-img {
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }

        .showcase-text h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
        }

        .showcase-text p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.7;
            margin-bottom: 1.5rem;
        }

        .benefit-badges {
            display: flex;
            flex-wrap: wrap;
            gap: 0.8rem;
        }

        .badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(16,185,129,0.12);
            color: var(--accent-green);
            border: 1px solid rgba(16,185,129,0.2);
        }

        .social-proof {
            background: linear-gradient(135deg, #062E20, #052215);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .stats-row {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 1.5rem;
            text-align: center;
        }

        .stat-item .stat-num {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--accent-gold);
            margin-bottom: 0.3rem;
            letter-spacing: -0.02em;
        }

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

        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: rgba(6,46,32,0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
        }

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

        .faq-item h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin: 0;
        }

        .cta-section {
            background: linear-gradient(135deg, #062E20, #031A12);
            border-radius: var(--radius-xl);
            border: 1px solid var(--border-subtle);
            padding: 3rem 2rem;
            text-align: center;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
        }

        .cta-section p {
            font-size: 1rem;
            color: var(--text-mint);
            margin-bottom: 1.5rem;
        }

        .news-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.5rem;
        }

        .news-card {
            background: rgba(6,46,32,0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
        }

        .news-card:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 8px 28px rgba(245,158,11,0.15);
            transform: translateY(-3px);
        }

        .news-card .news-img {
            height: 180px;
            overflow: hidden;
        }

        .news-card .news-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-card .news-body {
            padding: 1.25rem;
        }

        .news-card .news-body h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .news-card .news-body p {
            font-size: 0.85rem;
            color: var(--text-mint);
            line-height: 1.5;
            margin-bottom: 0.75rem;
        }

        .news-card .news-meta {
            font-size: 0.8rem;
            color: var(--accent-gold);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-mint);
            margin-bottom: 0.6rem;
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-mint);
            flex-wrap: wrap;
            gap: 0.5rem;
        }

        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: #031A12;
            box-shadow: 0 6px 25px rgba(245,158,11,0.35);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition-base);
            border: 2px solid rgba(245,158,11,0.4);
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 10px 35px rgba(245,158,11,0.5);
        }

        @media (max-width: 1024px) {
            .help-hero h1 {
                font-size: 2rem;
            }
            .video-showcase {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 26, 18, 0.95);
                backdrop-filter: blur(20px);
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-subtle);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .header-actions .btn-login {
                display: none;
            }
            .help-hero {
                padding: 6rem 0 3rem;
            }
            .help-hero h1 {
                font-size: 1.7rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .stats-row {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .search-box {
                flex-direction: column;
                gap: 0.5rem;
                padding: 0.75rem;
                border-radius: var(--radius-md);
            }
            .search-box input {
                width: 100%;
            }
            .search-box button {
                width: 100%;
            }
            .help-chips {
                gap: 0.5rem;
            }
            .chip {
                font-size: 0.75rem;
                padding: 0.4rem 0.8rem;
            }
            .section {
                padding: 3rem 0;
            }
            .section-header h2 {
                font-size: 1.5rem;
            }
            .cta-section {
                padding: 2rem 1rem;
            }
            .cta-section h2 {
                font-size: 1.4rem;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: var(--transition-base);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        .container-narrow {
            max-width: 820px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.88);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-green);
            font-size: 1.5rem;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--accent-gold);
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(245,158,11,0.12);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.35);
            white-space: nowrap;
        }
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.5);
        }
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }

        /* Article Hero / Banner */
        .article-banner {
            padding: 8rem 0 3rem;
            background: linear-gradient(180deg, #041f16 0%, #031A12 100%);
            position: relative;
            overflow: hidden;
        }
        .article-banner::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 60%;
            height: 140%;
            background: radial-gradient(circle, rgba(245,158,11,0.07) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-banner .banner-bg {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0.25;
            pointer-events: none;
        }
        .banner-content {
            position: relative;
            z-index: 2;
            text-align: left;
        }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            background: rgba(245,158,11,0.15);
            color: var(--accent-gold);
            padding: 0.4rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1rem;
            border: 1px solid rgba(245,158,11,0.25);
        }
        .banner-content h1 {
            font-size: 2.6rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        .banner-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 1.5rem;
            color: var(--text-mint);
            font-size: 0.9rem;
            margin-bottom: 1rem;
        }
        .banner-meta span {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .banner-meta i {
            color: var(--accent-gold);
        }

        /* Article Body */
        .article-main {
            padding: 3rem 0 5rem;
        }
        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 3rem;
            align-items: start;
        }
        .article-content {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 2.5rem;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
        }
        .article-content h2 {
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 2rem 0 1rem;
        }
        .article-content h3 {
            font-size: 1.4rem;
            font-weight: 600;
            color: var(--text-white);
            margin: 1.5rem 0 0.75rem;
        }
        .article-content p {
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-mint);
            margin-bottom: 1.25rem;
        }
        .article-content ul, .article-content ol {
            margin-bottom: 1.5rem;
            padding-left: 1.5rem;
        }
        .article-content li {
            font-size: 1rem;
            line-height: 1.7;
            color: var(--text-mint);
            margin-bottom: 0.5rem;
        }
        .article-content img {
            border-radius: var(--radius-lg);
            margin: 2rem 0;
            box-shadow: var(--shadow-card);
        }
        .article-content blockquote {
            border-left: 4px solid var(--accent-gold);
            padding: 1rem 1.5rem;
            margin: 2rem 0;
            background: rgba(245,158,11,0.06);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            font-style: italic;
            color: var(--text-warm);
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 90px;
        }
        .sidebar-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border-subtle);
            margin-bottom: 1.5rem;
        }
        .sidebar-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
            letter-spacing: -0.01em;
        }
        .sidebar-card .tag-list {
            display: flex;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        .sidebar-card .tag {
            background: rgba(245,158,11,0.1);
            color: var(--accent-gold);
            padding: 0.4rem 0.9rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
            border: 1px solid rgba(245,158,11,0.2);
            transition: var(--transition-base);
        }
        .sidebar-card .tag:hover {
            background: rgba(245,158,11,0.2);
        }
        .related-item {
            display: flex;
            gap: 0.75rem;
            padding: 0.75rem 0;
            border-bottom: 1px solid rgba(245,158,11,0.1);
            align-items: center;
        }
        .related-item:last-child {
            border-bottom: none;
        }
        .related-item img {
            width: 60px;
            height: 60px;
            border-radius: var(--radius-md);
            object-fit: cover;
            flex-shrink: 0;
        }
        .related-item .info {
            flex: 1;
        }
        .related-item .info a {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-white);
            line-height: 1.3;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-item .info a:hover {
            color: var(--accent-gold);
        }

        /* Share & CTA */
        .share-bar {
            display: flex;
            gap: 0.75rem;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
        }
        .share-btn {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(245,158,11,0.1);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.1rem;
            border: 1px solid rgba(245,158,11,0.2);
            transition: var(--transition-base);
        }
        .share-btn:hover {
            background: var(--accent-gold);
            color: #031A12;
        }
        .cta-box {
            background: linear-gradient(135deg, rgba(245,158,11,0.1), rgba(16,185,129,0.08));
            border: 1px solid rgba(245,158,11,0.3);
            border-radius: var(--radius-lg);
            padding: 2rem;
            text-align: left;
            margin-top: 2rem;
        }
        .cta-box h4 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 0.5rem;
        }
        .cta-box p {
            color: var(--text-mint);
            margin-bottom: 1.25rem;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2rem;
        }
        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }
        .footer-col p {
            font-size: 0.9rem;
            line-height: 1.6;
        }
        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-mint);
            margin-bottom: 0.5rem;
            transition: var(--transition-base);
        }
        .footer-col a:hover {
            color: var(--accent-gold);
            transform: translateX(4px);
        }
        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            padding-top: 1.5rem;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            font-size: 0.85rem;
            color: var(--text-mint);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 60;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #F59E0B, #B45309);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 25px rgba(245,158,11,0.4);
            cursor: pointer;
            transition: var(--transition-base);
            border: 2px solid #FCD34D;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab i {
            font-size: 1.5rem;
            color: #031A12;
        }
        .fab:hover {
            transform: scale(1.12);
            box-shadow: 0 10px 30px rgba(245,158,11,0.55);
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 18px;
            height: 18px;
            background: #DC2626;
            border-radius: 50%;
            border: 2px solid #031A12;
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
            }
            .banner-content h1 {
                font-size: 2.2rem;
            }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 26, 18, 0.98);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-subtle);
                backdrop-filter: blur(20px);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .banner-content h1 {
                font-size: 1.8rem;
            }
            .article-content {
                padding: 1.5rem;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .header-actions .btn-login {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
            .header-actions .btn-signup {
                padding: 0.5rem 1rem;
                font-size: 0.8rem;
            }
            .banner-content h1 {
                font-size: 1.5rem;
            }
            .article-content {
                padding: 1.25rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        
        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        
        a {
            color: inherit;
            text-decoration: none;
            transition: var(--transition-base);
        }
        
        button, .btn {
            cursor: pointer;
            border: none;
            outline: none;
            font-family: inherit;
            transition: var(--transition-base);
        }
        
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }
        
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        
        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }
        
        .logo i {
            color: var(--accent-green);
            font-size: 1.5rem;
        }
        
        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        
        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }
        
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        
        .nav-links a.active {
            color: var(--accent-gold);
        }
        
        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }
        
        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
        }
        
        .btn-login:hover {
            background: rgba(245,158,11,0.1);
        }
        
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
        }
        
        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }
        
        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(245,158,11,0.35);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245,158,11,0.5);
        }
        
        .btn-secondary {
            background: transparent;
            border: 1.5px solid var(--accent-gold);
            color: var(--accent-gold);
            padding: 0.9rem 2rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        
        .btn-secondary:hover {
            background: rgba(245,158,11,0.1);
            transform: translateY(-2px);
        }
        
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }
        
        .section-title span {
            color: var(--accent-gold);
        }
        
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-mint);
            line-height: 1.7;
            max-width: 680px;
        }
        
        .card-glow {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        
        .card-glow::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        
        .card-glow:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 12px 40px rgba(245,158,11,0.15);
            transform: translateY(-4px);
        }
        
        .card-glow:hover::before {
            opacity: 1;
        }
        
        .badge-hot {
            background: linear-gradient(135deg, #DC2626, #EF4444);
            color: #FFF;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            display: inline-block;
        }
        
        .site-footer {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 2rem;
            margin-top: 4rem;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        
        .footer-col h4 {
            color: var(--accent-gold);
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }
        
        .footer-col a {
            display: block;
            color: var(--text-mint);
            font-size: 0.9rem;
            padding: 0.4rem 0;
            transition: var(--transition-base);
        }
        
        .footer-col a:hover {
            color: var(--accent-gold);
            transform: translateX(4px);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: var(--text-mint);
            flex-wrap: wrap;
            gap: 1rem;
        }
        
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 26, 18, 0.98);
                flex-direction: column;
                padding: 2rem;
                gap: 1.5rem;
                border-bottom: 1px solid var(--border-subtle);
            }
            
            .nav-links.active {
                display: flex;
            }
            
            .mobile-menu-toggle {
                display: block;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
            }
            
            .section-title {
                font-size: 1.5rem;
            }
        }
        
        .hero-category {
            padding: 8rem 0 4rem;
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #052215 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero-category::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 60%;
            height: 130%;
            background: radial-gradient(circle, rgba(245,158,11,0.06) 0%, transparent 70%);
            border-radius: 50%;
        }
        
        .hero-cat-content {
            position: relative;
            z-index: 2;
        }
        
        .hero-cat-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 1.25rem;
        }
        
        .hero-cat-content h1 span {
            color: var(--accent-gold);
        }

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

/* roulang page: category3 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(245,158,11,0.1);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245,158,11,0.3);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245,158,11,0.45);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }

        .page-banner {
            padding: 8rem 0 4rem;
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #052215 100%);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 60%;
            height: 140%;
            background: radial-gradient(circle, rgba(16,185,129,0.12) 0%, transparent 70%);
            border-radius: 50%;
        }

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

        .badge-tag {
            display: inline-block;
            background: rgba(245,158,11,0.15);
            color: var(--accent-gold);
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(245,158,11,0.3);
            margin-bottom: 1rem;
        }

        .page-title {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: -0.03em;
        }

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

        .page-subtitle {
            font-size: 1.15rem;
            line-height: 1.7;
            color: var(--text-mint);
            max-width: 700px;
        }

        .section {
            padding: 5rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 1rem;
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-mint);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 2.5rem;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .strategy-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 2rem;
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-gold), var(--accent-green));
            border-radius: 0 0 4px 4px;
            opacity: 0;
            transition: opacity 0.3s ease;
        }

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

        .strategy-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(245,158,11,0.4);
        }

        .strategy-icon {
            width: 56px;
            height: 56px;
            border-radius: var(--radius-lg);
            background: rgba(245,158,11,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 1.25rem;
            font-size: 1.75rem;
            color: var(--accent-gold);
        }

        .strategy-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
        }

        .strategy-card p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.65;
            margin: 0;
        }

        .stat-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 2rem;
        }

        .stat-item {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            text-align: center;
        }

        .stat-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1;
            margin-bottom: 0.5rem;
        }

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

        .scenario-bento {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 2rem;
            align-items: start;
        }

        .scenario-main {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
        }

        .scenario-main img {
            width: 100%;
            height: 280px;
            object-fit: cover;
        }

        .scenario-main-body {
            padding: 2rem;
        }

        .scenario-main-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
        }

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

        .scenario-side {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .scenario-side-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
        }

        .scenario-side-card:hover {
            border-color: rgba(245,158,11,0.4);
            box-shadow: 0 4px 20px rgba(0,0,0,0.25);
        }

        .scenario-side-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 0.5rem;
        }

        .scenario-side-card p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin: 0;
        }

        .tips-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1rem;
        }

        .tips-list li {
            display: flex;
            gap: 0.75rem;
            padding: 1rem 1.25rem;
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            font-size: 0.95rem;
            color: var(--text-mint);
            align-items: flex-start;
            line-height: 1.6;
            transition: var(--transition-base);
        }

        .tips-list li:hover {
            border-color: rgba(245,158,11,0.4);
        }

        .tips-list li i {
            color: var(--accent-green);
            font-size: 1.15rem;
            margin-top: 0.15rem;
            flex-shrink: 0;
        }

        .faq-section {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            padding: 3rem;
            border: 1px solid var(--border-subtle);
        }

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 1.25rem;
        }

        .faq-item {
            background: rgba(6, 46, 32, 0.5);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: rgba(245,158,11,0.35);
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-warm);
            margin-bottom: 0.5rem;
        }

        .faq-item p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.65;
            margin: 0;
        }

        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.75rem;
        }

        .news-card {
            background: var(--bg-secondary);
            border-radius: var(--radius-xl);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card);
            border-color: rgba(245,158,11,0.4);
        }

        .news-card-img {
            height: 180px;
            overflow: hidden;
        }

        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

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

        .news-card-body {
            padding: 1.5rem;
        }

        .news-card-tag {
            display: inline-block;
            font-size: 0.78rem;
            font-weight: 600;
            color: var(--accent-gold);
            background: rgba(245,158,11,0.1);
            padding: 0.2rem 0.7rem;
            border-radius: 50px;
            margin-bottom: 0.75rem;
        }

        .news-card-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .news-card-body p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin-bottom: 0.75rem;
        }

        .news-card-meta {
            font-size: 0.8rem;
            color: rgba(167,243,208,0.6);
        }

        .cta-banner {
            background: linear-gradient(135deg, #062E20, #031A12);
            border-radius: var(--radius-xl);
            padding: 3.5rem 3rem;
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .cta-banner-text h3 {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .cta-banner-text p {
            font-size: 1rem;
            color: var(--text-mint);
            margin: 0;
            max-width: 500px;
            line-height: 1.6;
        }

        .btn-big-primary {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.9rem 2.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 6px 20px rgba(245,158,11,0.35);
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

        .btn-big-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(245,158,11,0.5);
        }

        .site-footer {
            background: #02140D;
            border-top: 1px solid var(--border-subtle);
            padding: 3.5rem 0 2rem;
            margin-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin: 0;
        }

        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-mint);
            padding: 0.35rem 0;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--accent-gold);
            padding-left: 0.35rem;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 1.5rem;
            border-top: 1px solid var(--border-subtle);
            font-size: 0.85rem;
            color: rgba(167,243,208,0.55);
            flex-wrap: wrap;
            gap: 0.75rem;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 70px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(3, 26, 18, 0.97);
            backdrop-filter: blur(12px);
            z-index: 49;
            padding: 2rem;
            flex-direction: column;
            gap: 1.5rem;
        }

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

        .mobile-menu a {
            font-size: 1.1rem;
            font-weight: 600;
            color: var(--text-mint);
            padding: 0.75rem 0;
            border-bottom: 1px solid var(--border-subtle);
        }

        .fab-floating {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #F59E0B, #D97706);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 6px 25px rgba(245,158,11,0.35);
            cursor: pointer;
            transition: var(--transition-base);
            color: #031A12;
            font-size: 1.5rem;
            animation: floatBreath 3s ease-in-out infinite;
        }

        .fab-floating:hover {
            transform: scale(1.1);
            box-shadow: 0 10px 35px rgba(245,158,11,0.5);
        }

        .fab-floating:active {
            transform: scale(0.95) translateY(2px);
        }

        .fab-notification {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 14px;
            height: 14px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #031A12;
            animation: pulse 2s ease-in-out infinite;
        }

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

        @keyframes pulse {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        @media (max-width: 1024px) {
            .strategy-grid { grid-template-columns: repeat(2, 1fr); }
            .stat-row { grid-template-columns: repeat(2, 1fr); }
            .scenario-bento { grid-template-columns: 1fr; }
            .tips-list { grid-template-columns: 1fr; }
            .faq-grid { grid-template-columns: 1fr; }
            .news-grid { grid-template-columns: repeat(2, 1fr); }
            .page-title { font-size: 2.25rem; }
        }

        @media (max-width: 768px) {
            .nav-links, .header-actions .btn-login, .header-actions .btn-signup { display: none; }
            .mobile-menu-toggle { display: block; }
            .header-actions { gap: 0.5rem; }
            .header-actions .btn-signup { display: inline-flex; font-size: 0.8rem; padding: 0.4rem 1rem; }
            .strategy-grid { grid-template-columns: 1fr; }
            .stat-row { grid-template-columns: 1fr 1fr; }
            .news-grid { grid-template-columns: 1fr; }
            .page-title { font-size: 1.85rem; }
            .section { padding: 3rem 0; }
            .page-banner { padding: 7rem 0 3rem; }
            .faq-section { padding: 2rem 1.5rem; }
            .cta-banner { padding: 2.5rem 1.5rem; flex-direction: column; text-align: center; }
            .cta-banner-text p { max-width: 100%; }
            .footer-grid { grid-template-columns: 1fr; gap: 1.5rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
        }

        @media (max-width: 520px) {
            .container { padding: 0 1rem; }
            .page-title { font-size: 1.55rem; }
            .stat-row { grid-template-columns: 1fr; }
            .stat-number { font-size: 2rem; }
            .section-title { font-size: 1.5rem; }
            .strategy-card { padding: 1.5rem; }
            .scenario-main-body { padding: 1.25rem; }
            .scenario-main img { height: 180px; }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #031A12;
            --bg-secondary: #062E20;
            --accent-gold: #F59E0B;
            --accent-green: #10B981;
            --text-white: #F0FDF4;
            --text-mint: #A7F3D0;
            --text-warm: #FEF3C7;
            --border-subtle: rgba(245,158,11,0.2);
            --shadow-card: 0 8px 32px rgba(0,0,0,0.3);
            --radius-xl: 1.5rem;
            --radius-lg: 1rem;
            --radius-md: 0.75rem;
            --transition-base: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-white);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

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

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

        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(3, 26, 18, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-subtle);
            transition: var(--transition-base);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 0.5rem;
            white-space: nowrap;
        }

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

        .nav-links {
            display: flex;
            align-items: center;
            gap: 2rem;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            font-size: 0.95rem;
            font-weight: 500;
            color: var(--text-mint);
            position: relative;
            padding: 0.5rem 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: width 0.25s ease;
        }

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

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

        .header-actions {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login {
            background: transparent;
            color: var(--accent-gold);
            border: 1.5px solid var(--accent-gold);
            padding: 0.5rem 1.25rem;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(245, 158, 11, 0.1);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.5rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.45);
        }

        .mobile-menu-toggle {
            display: none;
            background: transparent;
            color: var(--text-white);
            font-size: 1.75rem;
            border: none;
            cursor: pointer;
        }

        .page-hero {
            padding: 8rem 0 4rem;
            background: linear-gradient(135deg, #031A12 0%, #062E20 50%, #052215 100%);
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 60%;
            height: 140%;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.06) 0%, transparent 70%);
            border-radius: 50%;
        }

        .page-hero-content {
            position: relative;
            z-index: 2;
            max-width: 720px;
        }

        .page-hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
            color: var(--text-white);
            margin-bottom: 1.25rem;
            letter-spacing: -0.03em;
        }

        .page-hero-content h1 span {
            color: var(--accent-gold);
        }

        .page-hero-content .hero-desc {
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-mint);
            margin-bottom: 2rem;
        }

        .section {
            padding: 4rem 0;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(16, 185, 129, 0.12);
            color: var(--accent-green);
            border: 1px solid rgba(16, 185, 129, 0.25);
            padding: 0.4rem 1.1rem;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            letter-spacing: 0.02em;
            margin-bottom: 1rem;
            text-transform: uppercase;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.75rem;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-mint);
            line-height: 1.6;
            max-width: 680px;
        }

        .event-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            overflow: hidden;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .event-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 12px 40px rgba(0, 0, 0, 0.4);
            border-color: rgba(245, 158, 11, 0.4);
        }

        .event-card-img {
            height: 200px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .event-badge {
            position: absolute;
            top: 1rem;
            left: 1rem;
            background: linear-gradient(135deg, #DC2626, #B91C1C);
            color: #fff;
            padding: 0.35rem 1rem;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            text-transform: uppercase;
            box-shadow: 0 4px 12px rgba(220, 38, 38, 0.4);
        }

        .event-card-body {
            padding: 1.5rem;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .event-card-body h3 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.3;
        }

        .event-card-body p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin-bottom: 1rem;
            flex: 1;
        }

        .event-meta {
            display: flex;
            align-items: center;
            gap: 1rem;
            font-size: 0.85rem;
            color: #94A3B8;
            margin-bottom: 1rem;
        }

        .event-meta i {
            color: var(--accent-gold);
            font-size: 0.85rem;
        }

        .btn-event {
            background: linear-gradient(135deg, var(--accent-gold), #D97706);
            color: #031A12;
            padding: 0.7rem 1.5rem;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.9rem;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(245, 158, 11, 0.25);
            text-align: center;
            transition: var(--transition-base);
        }

        .btn-event:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(245, 158, 11, 0.4);
        }

        .timeline-steps {
            display: flex;
            flex-direction: column;
            gap: 2rem;
            padding-left: 2rem;
            border-left: 2px solid var(--border-subtle);
            position: relative;
        }

        .timeline-step {
            position: relative;
            padding-left: 2.5rem;
        }

        .timeline-step::before {
            content: '';
            position: absolute;
            left: -2.45rem;
            top: 0.4rem;
            width: 1rem;
            height: 1rem;
            background: var(--accent-gold);
            border-radius: 50%;
            box-shadow: 0 0 0 4px rgba(245, 158, 11, 0.15);
        }

        .timeline-step h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.35rem;
        }

        .timeline-step p {
            font-size: 0.95rem;
            color: var(--text-mint);
            line-height: 1.6;
        }

        .prize-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }

        .prize-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.75rem 1.5rem;
            text-align: center;
            transition: var(--transition-base);
        }

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

        .prize-icon {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 0.75rem;
        }

        .prize-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .prize-card p {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.5;
        }

        .cta-banner {
            background: linear-gradient(135deg, #062E20 0%, #052215 100%);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 3rem 2rem;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 2rem;
            flex-wrap: wrap;
        }

        .cta-banner h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
        }

        .cta-banner p {
            font-size: 1rem;
            color: var(--text-mint);
            line-height: 1.6;
            max-width: 500px;
        }

        .news-card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
        }

        .news-card:hover {
            border-color: rgba(245, 158, 11, 0.4);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .news-card h4 {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .news-card .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-mint);
            line-height: 1.6;
            margin-bottom: 0.75rem;
            flex: 1;
        }

        .news-meta {
            font-size: 0.8rem;
            color: #94A3B8;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .site-footer {
            background: #020E0A;
            border-top: 1px solid var(--border-subtle);
            padding: 3rem 0 1.5rem;
            margin-top: 2rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 1rem;
        }

        .footer-col a {
            display: block;
            font-size: 0.9rem;
            color: var(--text-mint);
            margin-bottom: 0.6rem;
            transition: var(--transition-base);
        }

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

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 1rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(245, 158, 11, 0.1);
            font-size: 0.85rem;
            color: #64748B;
        }

        .fab-float {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, #031A12, #062E20);
            border: 2px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.5rem;
            box-shadow: 0 6px 25px rgba(245, 158, 11, 0.35);
            transition: var(--transition-base);
            cursor: pointer;
            opacity: 0.85;
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-float:hover {
            transform: scale(1.1);
            opacity: 1;
            box-shadow: 0 10px 35px rgba(245, 158, 11, 0.55);
        }

        @keyframes fab-breathe {
            0%,
            100% {
                transform: translateY(0);
            }
            50% {
                transform: translateY(-4px);
            }
        }

        .fab-badge {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 16px;
            height: 16px;
            background: #DC2626;
            border-radius: 50%;
            border: 2px solid #031A12;
        }

        @media (max-width: 1024px) {
            .page-hero-content h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-menu-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 26, 18, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-subtle);
                gap: 1rem;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .header-actions {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .page-hero-content h1 {
                font-size: 1.8rem;
            }
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 2rem 1.25rem;
            }
            .event-card-img {
                height: 160px;
            }
            .prize-grid {
                grid-template-columns: 1fr;
            }
            .fab-float {
                width: 48px;
                height: 48px;
                font-size: 1.25rem;
                left: 0.75rem;
                bottom: 5rem;
            }
        }

        @media (max-width: 520px) {
            .page-hero-content h1 {
                font-size: 1.5rem;
            }
            .hero-desc {
                font-size: 0.9rem;
            }
            .container {
                padding: 0 1rem;
            }
        }