/* roulang page: index */
:root {
            --bg: #0B3C25;
            --bg2: #062315;
            --accent: #FFCC00;
            --accent2: #32CD32;
            --text: #FFFDF0;
            --soft: #C5E2D2;
            --muted: rgba(197, 226, 210, 0.75);
            --border: rgba(255, 204, 0, 0.25);
            --radius: 16px;
            --shadow: 0 12px 30px rgba(0, 0, 0, 0.25);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, sans-serif;
            background: var(--bg2);
            color: var(--text);
            line-height: 1.65;
            -webkit-font-smoothing: antialiased;
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        a {
            color: var(--accent);
            text-decoration: none;
            transition: color 0.25s ease;
        }
        a:hover {
            color: var(--accent2);
        }
        img {
            max-width: 100%;
            display: block;
        }
        button, input, select, textarea {
            font-family: inherit;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 24px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn:focus-visible {
            outline: 3px solid var(--accent2);
            outline-offset: 2px;
        }
        .btn-primary {
            background: var(--accent);
            color: #062315;
            box-shadow: 0 8px 18px rgba(255, 204, 0, 0.3);
        }
        .btn-primary:hover {
            background: #e0b800;
            transform: translateY(-2px);
            box-shadow: 0 12px 22px rgba(255, 204, 0, 0.45);
            color: #062315;
        }
        .btn-outline {
            background: transparent;
            color: var(--accent);
            border-color: var(--accent);
        }
        .btn-outline:hover {
            background: var(--accent);
            color: #062315;
            transform: translateY(-2px);
        }
        .btn-ghost {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            border-color: rgba(255, 255, 255, 0.15);
        }
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.12);
            color: var(--accent);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            letter-spacing: 0.3px;
            background: rgba(255, 204, 0, 0.12);
            color: var(--accent);
            border: 1px solid rgba(255, 204, 0, 0.3);
        }
        .badge-green {
            background: rgba(50, 205, 50, 0.12);
            color: var(--accent2);
            border-color: rgba(50, 205, 50, 0.3);
        }
        .section-padding {
            padding: 70px 0;
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            color: var(--text);
        }
        .section-desc {
            font-size: 17px;
            color: var(--muted);
            max-width: 720px;
            line-height: 1.7;
        }
        .card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.2);
            border-radius: var(--radius);
            padding: 24px;
            transition: all 0.35s ease;
        }
        .card:hover {
            border-color: var(--accent);
            transform: translateY(-4px);
            box-shadow: 0 14px 28px rgba(0, 0, 0, 0.35);
            background: rgba(255, 255, 255, 0.07);
        }
        .header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(6, 35, 21, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(255, 204, 0, 0.2);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
            gap: 16px;
        }
        .logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.4px;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            line-height: 1.3;
        }
        .logo i {
            color: var(--accent);
            font-size: 22px;
        }
        .logo:hover {
            color: var(--accent);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 24px;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--soft);
            padding: 6px 0;
            position: relative;
            transition: color 0.25s ease;
        }
        .nav-link:hover, .nav-link.active {
            color: var(--accent);
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 204, 0, 0.4);
            color: var(--accent);
            width: 42px;
            height: 42px;
            border-radius: 10px;
            font-size: 20px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 8px;
            padding: 16px 0 20px;
            border-top: 1px solid rgba(255, 204, 0, 0.15);
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 10px 4px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
        }
        .hero {
            position: relative;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            min-height: 580px;
            display: flex;
            align-items: center;
            border-bottom: 1px solid rgba(255, 204, 0, 0.2);
        }
        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6, 35, 21, 0.95) 0%, rgba(11, 60, 37, 0.85) 50%, rgba(6, 35, 21, 0.92) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            padding: 80px 0;
            width: 100%;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 40px;
            align-items: center;
        }
        .hero-badge-row {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 40px;
            font-weight: 800;
            letter-spacing: -1px;
            line-height: 1.25;
            margin-bottom: 18px;
            color: var(--text);
        }
        .hero h1 span {
            color: var(--accent);
        }
        .hero-desc {
            font-size: 18px;
            color: var(--soft);
            max-width: 560px;
            line-height: 1.75;
            margin-bottom: 28px;
        }
        .hero-cta-row {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            margin-bottom: 24px;
        }
        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 10px;
        }
        .hero-stat {
            display: flex;
            flex-direction: column;
        }
        .hero-stat strong {
            font-size: 26px;
            color: var(--accent);
            font-weight: 700;
        }
        .hero-stat span {
            font-size: 14px;
            color: var(--muted);
        }
        .hero-visual {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.25);
            border-radius: 24px;
            padding: 30px;
            backdrop-filter: blur(10px);
        }
        .hero-visual img {
            border-radius: 16px;
            margin-bottom: 20px;
            aspect-ratio: 16/10;
            object-fit: cover;
            width: 100%;
        }
        .hero-visual h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .hero-visual p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
        }
        .info-panel {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 204, 0, 0.18);
            border-radius: var(--radius);
            padding: 26px;
        }
        .info-panel h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--accent);
        }
        .info-panel ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .info-panel li {
            display: flex;
            gap: 10px;
            align-items: flex-start;
            font-size: 15px;
            color: var(--soft);
        }
        .info-panel li i {
            color: var(--accent2);
            margin-top: 3px;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }
        .benefit-item {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .benefit-icon {
            width: 48px;
            height: 48px;
            border-radius: 14px;
            background: rgba(255, 204, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 20px;
            flex-shrink: 0;
        }
        .benefit-item h4 {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .benefit-item p {
            font-size: 15px;
            color: var(--muted);
            line-height: 1.7;
        }
        .content-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0;
        }
        .content-list li {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: 14px 0;
            display: flex;
            align-items: center;
            gap: 14px;
            transition: background 0.25s ease;
        }
        .content-list li:hover {
            background: rgba(255, 255, 255, 0.03);
        }
        .content-list li .num {
            font-size: 14px;
            font-weight: 700;
            color: var(--accent);
            width: 32px;
            height: 32px;
            border-radius: 10px;
            background: rgba(255, 204, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
        }
        .content-list li a {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            flex: 1;
        }
        .content-list li a:hover {
            color: var(--accent);
        }
        .content-list li span {
            font-size: 13px;
            color: var(--muted);
        }
        .testimonial-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 204, 0, 0.2);
            border-radius: var(--radius);
            padding: 24px;
        }
        .testimonial-card .stars {
            color: var(--accent);
            margin-bottom: 12px;
            font-size: 16px;
        }
        .testimonial-card p {
            font-size: 15px;
            color: var(--soft);
            line-height: 1.7;
            margin-bottom: 16px;
        }
        .testimonial-card .author {
            font-weight: 700;
            font-size: 14px;
        }
        .testimonial-card .role {
            font-size: 13px;
            color: var(--muted);
        }
        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            padding: 18px 0;
        }
        .faq-question {
            font-size: 17px;
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            color: var(--text);
            transition: color 0.25s ease;
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question i {
            color: var(--accent);
            transition: transform 0.3s ease;
        }
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease;
            font-size: 15px;
            color: var(--muted);
            line-height: 1.75;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding-top: 12px;
        }
        .form-group {
            margin-bottom: 16px;
        }
        .form-group label {
            display: block;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 6px;
            color: var(--soft);
        }
        .form-group input, .form-group textarea {
            width: 100%;
            padding: 12px 16px;
            border-radius: 10px;
            border: 1px solid rgba(255, 204, 0, 0.25);
            background: rgba(255, 255, 255, 0.06);
            color: var(--text);
            font-size: 15px;
            transition: border-color 0.25s ease, box-shadow 0.25s ease;
        }
        .form-group input:focus, .form-group textarea:focus {
            outline: none;
            border-color: var(--accent);
            box-shadow: 0 0 0 3px rgba(255, 204, 0, 0.15);
        }
        .form-group textarea {
            resize: vertical;
            min-height: 110px;
        }
        .footer {
            background: #041B0E;
            border-top: 1px solid rgba(255, 204, 0, 0.2);
            padding: 50px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 30px;
            margin-bottom: 30px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            color: var(--accent);
        }
        .footer p, .footer a {
            font-size: 14px;
            color: var(--muted);
            line-height: 1.7;
        }
        .footer a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: var(--muted);
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 70;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(6, 35, 21, 0.95);
            border: 2px solid var(--accent);
            color: var(--accent);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            animation: fabFloat 3s ease-in-out infinite;
            transition: all 0.3s ease;
            opacity: 0.7;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
        }
        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }
        .fab-left::after {
            content: '';
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: #D32F2F;
            border: 2px solid #062315;
            animation: blink 1.5s infinite;
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .grid-3 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .header-actions .btn-ghost {
                display: none;
            }
            .section-padding {
                padding: 48px 0;
            }
            .hero {
                min-height: auto;
            }
            .hero h1 {
                font-size: 30px;
            }
            .hero-desc {
                font-size: 16px;
            }
            .grid-2 {
                grid-template-columns: 1fr;
            }
            .section-title {
                font-size: 23px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .fab-left {
                left: 12px;
                bottom: 80px;
                width: 50px;
                height: 50px;
                font-size: 20px;
            }
        }
        @media (max-width: 520px) {
            .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .hero h1 {
                font-size: 26px;
            }
            .hero-cta-row {
                flex-direction: column;
            }
            .hero-cta-row .btn {
                width: 100%;
                justify-content: center;
            }
            .container {
                padding: 0 16px;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0A2E1C;
            --secondary-bg: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-muted: rgba(209, 242, 235, 0.7);
            --border-gold: rgba(255, 215, 0, 0.3);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.15);
            --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.3);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 22px;
            --radius-xl: 30px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * { margin: 0; padding: 0; box-sizing: border-box; }
        html { scroll-behavior: smooth; }
        body {
            font-family: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, #0A2E1C 0%, #123E25 50%, #0D3520 100%);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
        }
        img { max-width: 100%; height: auto; display: block; }
        a { text-decoration: none; color: inherit; transition: var(--transition); }
        button { cursor: pointer; font-family: inherit; border: none; background: none; }
        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }
        .container-narrow { max-width: 800px; margin: 0 auto; padding: 0 20px; }
        .block { display: block; }
        .mb-2 { margin-bottom: 8px; }
        .mr-2 { margin-right: 8px; }

        /* Header */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(10, 46, 28, 0.95);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-gold);
            padding: 12px 0;
            transition: var(--transition);
        }
        .header.scrolled {
            background: rgba(10, 46, 28, 0.98);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: -0.3px;
            transition: var(--transition);
            flex-shrink: 0;
        }
        .logo i {
            font-size: 24px;
            color: var(--accent-gold);
            filter: drop-shadow(0 0 8px rgba(255, 215, 0, 0.5));
        }
        .logo:hover {
            transform: translateY(-2px);
            filter: brightness(1.1);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 8px;
            flex: 1;
            justify-content: center;
        }
        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-mint);
            border-radius: 999px;
            transition: var(--transition);
            position: relative;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.08);
        }
        .nav-link.active {
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.12);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            font-size: 14px;
            font-weight: 600;
            border-radius: 999px;
            transition: var(--transition);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }
        .btn-ghost {
            color: var(--text-mint);
            border: 1px solid rgba(209, 242, 235, 0.3);
            background: transparent;
        }
        .btn-ghost:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255, 215, 0, 0.05);
        }
        .btn-primary {
            background: linear-gradient(135deg, #FFD700 0%, #FFC107 100%);
            color: #0A2E1C;
            font-weight: 700;
            box-shadow: 0 4px 16px rgba(255, 215, 0, 0.35);
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.5);
        }
        .btn-primary:active {
            transform: translateY(0);
        }
        .btn-outline-gold {
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            background: transparent;
            font-weight: 600;
        }
        .btn-outline-gold:hover {
            background: var(--accent-gold);
            color: #0A2E1C;
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(255, 215, 0, 0.3);
        }
        .nav-toggle {
            display: none;
            font-size: 22px;
            color: var(--accent-gold);
            padding: 8px;
            border-radius: 8px;
            transition: var(--transition);
        }
        .nav-toggle:hover {
            background: rgba(255, 215, 0, 0.1);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding-top: 16px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            display: block;
            text-align: left;
            padding: 12px 16px;
            font-size: 15px;
            border-radius: 8px;
        }

        /* Article Hero */
        .article-hero {
            padding-top: 140px;
            padding-bottom: 40px;
            background: linear-gradient(180deg, rgba(10, 46, 28, 0.95) 0%, rgba(18, 62, 37, 0.9) 100%);
            position: relative;
            overflow: hidden;
        }
        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 0;
        }
        .article-hero-content {
            position: relative;
            z-index: 1;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--accent-gold);
            transition: var(--transition);
        }
        .breadcrumb a:hover {
            color: #FFC107;
            text-decoration: underline;
        }
        .breadcrumb i {
            font-size: 10px;
            color: var(--text-muted);
        }
        .article-title {
            font-size: clamp(28px, 4vw, 44px);
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .article-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta i {
            color: var(--accent-gold);
            font-size: 14px;
        }
        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 6px 14px;
            background: rgba(255, 215, 0, 0.12);
            color: var(--accent-gold);
            border: 1px solid var(--border-gold);
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        /* Article Content */
        .article-content-section {
            padding: 40px 0 60px;
        }
        .article-body {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 215, 0, 0.15);
            border-radius: var(--radius-lg);
            padding: 40px;
            backdrop-filter: blur(8px);
        }
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--accent-gold);
            margin: 32px 0 16px;
            line-height: 1.35;
            letter-spacing: -0.3px;
        }
        .article-body h2:first-child {
            margin-top: 0;
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--text-white);
            margin: 24px 0 12px;
            line-height: 1.4;
        }
        .article-body p {
            font-size: 16px;
            color: var(--text-mint);
            margin-bottom: 16px;
            line-height: 1.7;
        }
        .article-body ul, .article-body ol {
            margin: 16px 0 20px 24px;
            color: var(--text-mint);
            font-size: 16px;
            line-height: 1.7;
        }
        .article-body li {
            margin-bottom: 8px;
        }
        .article-body li::marker {
            color: var(--accent-gold);
            font-weight: 700;
        }
        .article-body strong {
            color: var(--accent-gold);
            font-weight: 600;
        }
        .article-body blockquote {
            margin: 24px 0;
            padding: 16px 20px;
            background: rgba(255, 215, 0, 0.05);
            border-left: 4px solid var(--accent-gold);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-mint);
            font-style: italic;
            font-size: 16px;
        }
        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-gold);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            font-size: 14px;
            color: var(--text-mint);
        }
        .article-body table th {
            background: rgba(255, 215, 0, 0.1);
            color: var(--accent-gold);
            font-weight: 600;
            padding: 12px 16px;
            text-align: left;
            border: 1px solid rgba(255, 215, 0, 0.2);
        }
        .article-body table td {
            padding: 10px 16px;
            border: 1px solid rgba(255, 215, 0, 0.15);
        }
        .article-body a {
            color: var(--accent-gold);
            text-decoration: underline;
            transition: var(--transition);
        }
        .article-body a:hover {
            color: #FFC107;
        }

        /* Not Found State */
        .not-found-state {
            text-align: center;
            padding: 60px 20px;
        }
        .not-found-state i {
            font-size: 56px;
            color: var(--accent-gold);
            margin-bottom: 20px;
            opacity: 0.7;
        }
        .not-found-state h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .not-found-state p {
            color: var(--text-muted);
            margin-bottom: 24px;
            font-size: 16px;
        }

        /* CTA Section */
        .cta-section {
            padding: 60px 0;
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.05) 0%, rgba(10, 46, 28, 0.95) 100%);
            border-top: 1px solid var(--border-gold);
            border-bottom: 1px solid var(--border-gold);
        }
        .cta-box {
            background: linear-gradient(135deg, #123E25 0%, #0A2E1C 100%);
            border: 2px solid var(--accent-gold);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-gold);
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.08) 0%, transparent 60%);
            animation: pulse-glow 4s ease-in-out infinite;
        }
        @keyframes pulse-glow {
            0%, 100% { transform: scale(1); opacity: 0.5; }
            50% { transform: scale(1.2); opacity: 1; }
        }
        .cta-box h2 {
            font-size: clamp(24px, 3vw, 36px);
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 16px;
            color: var(--text-mint);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .footer {
            background: rgba(8, 30, 18, 0.98);
            padding: 60px 0 20px;
            border-top: 2px solid var(--border-gold);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
        }
        .footer p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        .footer a {
            font-size: 13px;
            color: var(--text-mint);
            transition: var(--transition);
            line-height: 2;
        }
        .footer a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 215, 0, 0.2);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1A1A1A 0%, #0D0D0D 100%);
            border: 3px solid var(--accent-gold);
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 24px;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.7;
            animation: fab-breathe 3s ease-in-out infinite;
        }
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 30px rgba(255, 215, 0, 0.5);
        }
        .fab:active {
            transform: scale(0.95);
        }
        .fab .notification-dot {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 14px;
            height: 14px;
            background: #FF0040;
            border-radius: 50%;
            border: 2px solid #0A2E1C;
            animation: blink-dot 1.5s ease-in-out infinite;
        }
        @keyframes fab-breathe {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        @keyframes blink-dot {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-desktop { gap: 4px; }
            .nav-link { padding: 8px 12px; font-size: 13px; }
            .footer-grid { grid-template-columns: 1fr 1fr; gap: 30px; }
        }
        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-toggle { display: inline-flex; }
            .header-actions .btn { display: none; }
            .header-actions .btn-ghost, .header-actions .btn-primary {
                display: inline-flex;
                padding: 6px 14px;
                font-size: 13px;
            }
            .header-actions {
                gap: 6px;
            }
            .article-body {
                padding: 24px 20px;
                border-radius: var(--radius-md);
            }
            .article-body h2 { font-size: 22px; }
            .article-body h3 { font-size: 18px; }
            .article-body p { font-size: 15px; }
            .article-title { font-size: 26px; }
            .cta-box { padding: 32px 20px; }
            .footer-grid { grid-template-columns: 1fr; gap: 24px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .fab { left: 12px; bottom: 80px; width: 48px; height: 48px; font-size: 20px; }
        }
        @media (max-width: 520px) {
            .container { padding: 0 14px; }
            .article-title { font-size: 22px; }
            .article-meta { gap: 10px; font-size: 12px; }
            .article-body { padding: 20px 16px; }
            .article-body h2 { font-size: 20px; }
            .article-body p { font-size: 14px; }
            .article-body ul, .article-body ol { margin-left: 18px; font-size: 14px; }
            .cta-box h2 { font-size: 22px; }
            .btn { padding: 8px 16px; font-size: 13px; }
            .header-actions .btn-ghost { display: none; }
            .header-actions .btn-primary { padding: 6px 12px; font-size: 12px; }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0B3C25;
            --bg-secondary: #062315;
            --accent-gold: #FFCC00;
            --accent-lime: #32CD32;
            --text-white: #FFFDF0;
            --text-light: #C5E2D2;
            --border-soft: rgba(255, 204, 0, 0.25);
            --shadow-soft: 0 8px 32px rgba(0,0,0,0.25);
            --shadow-hover: 0 16px 48px rgba(0,0,0,0.35);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 32px;
            --spacing-lg: 56px;
            --spacing-xl: 80px;
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-secondary);
            color: var(--text-white);
            line-height: 1.6;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--accent-gold);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(6, 35, 21, 0.92);
            backdrop-filter: blur(16px);
            border-bottom: 1px solid var(--border-soft);
            padding: 12px 0;
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--text-white);
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-gold);
            font-size: 24px;
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 28px;
            flex-wrap: wrap;
        }
        .nav-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-light);
            padding: 8px 2px;
            border-bottom: 2px solid transparent;
            transition: all 0.2s ease;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
        }
        .nav-link.active {
            color: var(--accent-gold);
            border-bottom-color: var(--accent-gold);
            font-weight: 700;
        }
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn {
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 15px;
            transition: all 0.25s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-ghost {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255,255,255,0.35);
        }
        .btn-ghost:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
            background: rgba(255,204,0,0.08);
        }
        .btn-primary {
            background: linear-gradient(135deg, #FFCC00, #FFB300);
            color: #062315;
            border: none;
            box-shadow: 0 4px 16px rgba(255,204,0,0.3);
        }
        .btn-primary:hover {
            box-shadow: 0 8px 28px rgba(255,204,0,0.45);
            transform: translateY(-2px);
        }
        .nav-toggle {
            display: none;
            color: var(--text-white);
            font-size: 24px;
            padding: 8px;
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 4px;
            padding-top: 16px;
            border-top: 1px solid var(--border-soft);
            margin-top: 12px;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu .nav-link {
            padding: 12px 4px;
            border-bottom: 1px solid rgba(255,255,255,0.08);
        }
        .hero {
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 80px 0 70px;
            border-bottom: 1px solid var(--border-soft);
        }
        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(6,35,21,0.92) 0%, rgba(11,60,37,0.82) 100%);
        }
        .hero .container {
            position: relative;
            z-index: 1;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(255,204,0,0.15);
            border: 1px solid rgba(255,204,0,0.35);
            color: var(--accent-gold);
            padding: 8px 18px;
            border-radius: 999px;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 20px;
        }
        .hero h1 {
            font-size: 44px;
            line-height: 1.2;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        .hero h1 .highlight {
            color: var(--accent-gold);
        }
        .hero p {
            font-size: 18px;
            color: var(--text-light);
            line-height: 1.7;
            margin-bottom: 28px;
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .hero-visual {
            background: rgba(255,255,255,0.06);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(12px);
        }
        .hero-visual h3 {
            font-size: 20px;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }
        .hero-visual ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }
        .hero-visual ul li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-light);
            font-size: 15px;
        }
        .hero-visual ul li i {
            color: var(--accent-lime);
            margin-top: 3px;
        }
        .section {
            padding: 64px 0;
        }
        .section-alt {
            background: rgba(255,255,255,0.03);
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }
        .section-header {
            margin-bottom: 40px;
            max-width: 720px;
        }
        .section-tag {
            display: inline-block;
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 14px;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }
        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 14px;
        }
        .section-header p {
            color: var(--text-light);
            font-size: 17px;
            line-height: 1.65;
        }
        .grid-2 {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .card {
            background: rgba(255,255,255,0.04);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all 0.25s ease;
        }
        .card:hover {
            border-color: rgba(255,204,0,0.5);
            box-shadow: var(--shadow-soft);
            transform: translateY(-4px);
        }
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }
        .card p {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.65;
        }
        .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(255,204,0,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            color: var(--accent-gold);
            font-size: 22px;
        }
        .step-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .step-list li {
            display: flex;
            gap: 16px;
            align-items: flex-start;
        }
        .step-num {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--accent-gold);
            color: #062315;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 16px;
        }
        .step-list h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 4px;
        }
        .step-list p {
            color: var(--text-light);
            font-size: 15px;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding: 20px 0;
        }
        .faq-question {
            font-size: 18px;
            font-weight: 600;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            color: var(--text-white);
        }
        .faq-question i {
            color: var(--accent-gold);
            transition: transform 0.3s ease;
        }
        .faq-answer {
            color: var(--text-light);
            font-size: 15px;
            line-height: 1.7;
            padding-top: 12px;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }
        .faq-item.active .faq-question i {
            transform: rotate(180deg);
        }
        .cta-box {
            background: linear-gradient(135deg, #0B3C25, #062315);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
        }
        .cta-box h2 {
            font-size: 30px;
            font-weight: 800;
            margin-bottom: 16px;
        }
        .cta-box p {
            color: var(--text-light);
            font-size: 17px;
            margin-bottom: 28px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        .footer {
            background: #051A0F;
            border-top: 1px solid var(--border-soft);
            padding: 56px 0 24px;
            margin-top: 40px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            color: var(--accent-gold);
            margin-bottom: 16px;
        }
        .footer p {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.7;
        }
        .footer a {
            display: inline-block;
            color: var(--text-light);
            font-size: 14px;
            margin-bottom: 8px;
            transition: color 0.2s;
        }
        .footer a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            color: rgba(255,255,255,0.6);
            font-size: 13px;
        }
        .fab-left {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 60;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #1a3a2a, #0B3C25);
            border: 2px solid var(--accent-gold);
            color: var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            box-shadow: 0 4px 20px rgba(255,215,0,0.3);
            opacity: 0.7;
            transition: all 0.3s ease;
            animation: float 3s ease-in-out infinite;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255,215,0,0.45);
        }
        .fab-left:active {
            transform: scale(0.95) translateY(2px);
        }
        @keyframes float {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-8px); }
        }
        .mr-2 { margin-right: 8px; }
        .block { display: block; }
        .mb-2 { margin-bottom: 8px; }
        .img-cover {
            width: 100%;
            border-radius: var(--radius-md);
            object-fit: cover;
            border: 1px solid var(--border-soft);
        }
        .divider {
            height: 1px;
            background: rgba(255,255,255,0.1);
            margin: 40px 0;
        }
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-3 {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: block;
            }
            .header-actions .btn-ghost,
            .header-actions .btn-primary {
                display: inline-flex;
            }
            .hero h1 {
                font-size: 32px;
            }
            .grid-2, .grid-3, .grid-4 {
                grid-template-columns: 1fr;
            }
            .section {
                padding: 48px 0;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }
        @media (max-width: 520px) {
            .hero h1 {
                font-size: 26px;
            }
            .hero p {
                font-size: 16px;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .header-actions .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            .logo span {
                font-size: 16px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #0F0C20;
            --bg-secondary: #0B1A30;
            --bg-card: #151233;
            --accent-primary: #CCFF00;
            --accent-secondary: #00F0FF;
            --accent-hot: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --border-glow: rgba(0, 240, 255, 0.35);
            --radius-sm: 12px;
            --radius-md: 18px;
            --radius-lg: 28px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.4);
            --transition: all 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
            --font-main: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-main);
            background: linear-gradient(160deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
            color: inherit;
            transition: var(--transition);
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 14px 0;
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-weight: 800;
            font-size: 1.1rem;
            letter-spacing: -0.01em;
            color: var(--text-primary);
            transition: var(--transition);
        }

        .logo i {
            color: var(--accent-secondary);
            font-size: 1.4rem;
            filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.7));
        }

        .logo:hover {
            transform: translateY(-1px);
            color: var(--accent-secondary);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .nav-link {
            display: inline-flex;
            align-items: center;
            padding: 8px 16px;
            border-radius: 999px;
            font-size: 0.9rem;
            font-weight: 500;
            color: var(--text-secondary);
            transition: var(--transition);
            position: relative;
        }

        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(0, 240, 255, 0.08);
        }

        .nav-link.active {
            color: var(--accent-primary);
            background: rgba(204, 255, 0, 0.1);
            box-shadow: inset 0 0 0 1px rgba(204, 255, 0, 0.3);
        }

        .header-actions {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 10px 22px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            white-space: nowrap;
        }

        .btn:focus-visible {
            outline: 2px solid var(--accent-secondary);
            outline-offset: 2px;
        }

        .btn-ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-1px);
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-primary), #aaff00);
            color: #0F0C20;
            box-shadow: 0 4px 15px rgba(204, 255, 0, 0.35);
        }

        .btn-primary:hover {
            box-shadow: 0 6px 25px rgba(204, 255, 0, 0.55);
            transform: translateY(-2px);
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 10px rgba(204, 255, 0, 0.3);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent-secondary);
            border: 1px solid var(--accent-secondary);
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--shadow-neon);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            font-size: 1.5rem;
            color: var(--text-primary);
            padding: 6px 10px;
            border-radius: 8px;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: 16px 24px;
            gap: 8px;
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            margin-top: 14px;
        }

        .mobile-menu .nav-link {
            display: block;
            width: 100%;
            text-align: left;
            padding: 12px 16px;
            border-radius: 12px;
        }

        .hero {
            padding: 140px 0 60px;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.08) 0%, transparent 70%);
            pointer-events: none;
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            border-radius: 999px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-secondary);
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 18px;
            letter-spacing: 0.02em;
        }

        .hero-badge i {
            font-size: 0.7rem;
            animation: pulse-dot 2s infinite;
        }

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

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
        }

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

        .hero-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 560px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .hero-status {
            display: flex;
            align-items: center;
            gap: 20px;
            flex-wrap: wrap;
            padding: 18px 22px;
            border-radius: var(--radius-md);
            background: rgba(21, 18, 51, 0.6);
            border: 1px solid rgba(0, 240, 255, 0.15);
            margin-bottom: 28px;
        }

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

        .status-item i {
            color: var(--accent-primary);
            font-size: 0.9rem;
        }

        .hero-icon-matrix {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 12px;
        }

        .icon-matrix-item {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 6px;
            padding: 18px 10px;
            border-radius: var(--radius-sm);
            background: rgba(21, 18, 51, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.12);
            transition: var(--transition);
            text-align: center;
        }

        .icon-matrix-item:hover {
            border-color: rgba(0, 240, 255, 0.45);
            box-shadow: var(--shadow-neon);
            transform: translateY(-3px);
        }

        .icon-matrix-item i {
            font-size: 1.6rem;
            color: var(--accent-secondary);
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.6));
        }

        .icon-matrix-item span {
            font-size: 0.75rem;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .section {
            padding: 70px 0;
            position: relative;
        }

        .section-header {
            margin-bottom: 40px;
            max-width: 680px;
        }

        .section-tag {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 999px;
            background: rgba(204, 255, 0, 0.08);
            border: 1px solid rgba(204, 255, 0, 0.3);
            color: var(--accent-primary);
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 14px;
        }

        .section-title {
            font-size: clamp(1.6rem, 3.5vw, 2.2rem);
            font-weight: 800;
            letter-spacing: -0.01em;
            line-height: 1.3;
            margin-bottom: 12px;
        }

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

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

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.12);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
            opacity: 0;
            transition: var(--transition);
        }

        .strategy-card:hover {
            border-color: rgba(0, 240, 255, 0.4);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.12);
            transform: translateY(-5px);
        }

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

        .strategy-icon {
            width: 48px;
            height: 48px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            margin-bottom: 18px;
        }

        .strategy-icon i {
            font-size: 1.3rem;
            color: var(--accent-secondary);
        }

        .strategy-card h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
        }

        .strategy-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .step-flow {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 20px;
        }

        .step-item {
            text-align: left;
            padding: 22px;
            border-radius: var(--radius-sm);
            background: rgba(21, 18, 51, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            transition: var(--transition);
        }

        .step-item:hover {
            border-color: rgba(204, 255, 0, 0.4);
            box-shadow: var(--shadow-lime);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            color: #0F0C20;
            font-weight: 800;
            font-size: 1rem;
            margin-bottom: 12px;
        }

        .step-item h4 {
            font-size: 1rem;
            font-weight: 700;
            margin-bottom: 8px;
        }

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

        .split-layout {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .split-content h3 {
            font-size: 1.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .split-content p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            font-size: 0.95rem;
        }

        .split-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid rgba(0, 240, 255, 0.2);
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.35);
        }

        .split-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }

        .split-image:hover img {
            transform: scale(1.03);
        }

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

        .tip-list li {
            display: flex;
            gap: 14px;
            padding: 16px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            align-items: flex-start;
        }

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

        .tip-list .tip-icon {
            flex-shrink: 0;
            width: 32px;
            height: 32px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid rgba(204, 255, 0, 0.25);
            color: var(--accent-primary);
            font-size: 0.9rem;
        }

        .tip-list .tip-text strong {
            display: block;
            font-size: 0.95rem;
            margin-bottom: 4px;
        }

        .tip-list .tip-text span {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.55;
        }

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

        .faq-item {
            background: rgba(21, 18, 51, 0.5);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition);
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 0.95rem;
            font-weight: 600;
            text-align: left;
            color: var(--text-primary);
        }

        .faq-question i {
            color: var(--accent-secondary);
            transition: var(--transition);
            font-size: 0.9rem;
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
        }

        .faq-answer p {
            padding: 0 22px 18px;
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .cta-section {
            padding: 70px 0;
            position: relative;
            overflow: hidden;
        }

        .cta-box {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.08), rgba(204, 255, 0, 0.06));
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-box::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(from 0deg, transparent, rgba(0, 240, 255, 0.05), transparent, rgba(204, 255, 0, 0.05), transparent);
            animation: rotate-glow 8s linear infinite;
            pointer-events: none;
        }

        @keyframes rotate-glow {
            from { transform: rotate(0deg); }
            to { transform: rotate(360deg); }
        }

        .cta-box h3 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-box p {
            color: var(--text-secondary);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
            font-size: 1rem;
            max-width: 500px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-buttons {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .footer {
            background: #08060F;
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 50px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 35px;
        }

        .footer h4 {
            font-size: 0.95rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .footer p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 10px;
        }

        .footer a {
            display: inline-block;
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 8px;
            transition: var(--transition);
        }

        .footer a:hover {
            color: var(--accent-secondary);
            transform: translateX(3px);
        }

        .footer .mr-2 {
            margin-right: 8px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            padding-top: 25px;
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            flex-wrap: wrap;
        }

        .footer-bottom span {
            font-size: 0.8rem;
            color: var(--text-secondary);
        }

        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-secondary);
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.65;
            animation: fab-breathe 3s ease-in-out infinite;
            position: fixed;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
            z-index: -1;
            opacity: 0.7;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: var(--shadow-neon);
            animation-play-state: paused;
        }

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

        .fab .notification-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            border-radius: 50%;
            background: var(--accent-hot);
            border: 2px solid #0F0C20;
            animation: pulse-dot 1.5s infinite;
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.55; }
            50% { opacity: 0.85; }
        }

        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 35px;
            }
            .strategy-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-flow {
                grid-template-columns: repeat(2, 1fr);
            }
            .split-layout {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .mobile-menu.show {
                display: flex;
            }
            .header-actions .btn-ghost,
            .header-actions .btn-primary {
                padding: 7px 14px;
                font-size: 0.8rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .step-flow {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 25px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .cta-box {
                padding: 35px 22px;
            }
            .hero {
                padding: 120px 0 40px;
            }
            .hero-icon-matrix {
                grid-template-columns: repeat(3, 1fr);
                gap: 8px;
            }
            .icon-matrix-item {
                padding: 14px 6px;
            }
            .icon-matrix-item i {
                font-size: 1.2rem;
            }
            .icon-matrix-item span {
                font-size: 0.65rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-title {
                font-size: 1.8rem;
            }
            .header-actions .btn-ghost {
                display: none;
            }
            .header-actions .btn-primary {
                padding: 6px 12px;
                font-size: 0.75rem;
            }
            .logo span {
                font-size: 0.85rem;
            }
            .section {
                padding: 50px 0;
            }
            .cta-box h3 {
                font-size: 1.4rem;
            }
            .fab {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                left: 12px;
                bottom: 80px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #0F0C20;
            --secondary-bg: #0B1A30;
            --accent-1: #CCFF00;
            --accent-2: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --border-color: rgba(204, 255, 0, 0.25);
            --card-bg: rgba(15, 12, 32, 0.85);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.35);
            --radius: 16px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 32px;
            --spacing-xl: 64px;
            --spacing-2xl: 96px;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        
        /* Header */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 12px 0;
        }
        
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            white-space: nowrap;
            letter-spacing: -0.3px;
        }
        
        .logo i {
            color: var(--accent-1);
            font-size: 24px;
        }
        
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 20px;
            flex: 1;
            justify-content: center;
        }
        
        .nav-link {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 12px;
            border-radius: 8px;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.05);
        }
        
        .nav-link.active {
            color: var(--accent-1);
            background: rgba(204, 255, 0, 0.1);
            font-weight: 600;
        }
        
        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 24px;
            height: 2px;
            background: var(--accent-1);
            border-radius: 2px;
        }
        
        .header-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 22px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            border: none;
            transition: all 0.3s ease;
            text-decoration: none;
            white-space: nowrap;
        }
        
        .btn-primary {
            background: linear-gradient(135deg, var(--accent-1), #a8e600);
            color: #0F0C20;
            box-shadow: 0 4px 15px rgba(204, 255, 0, 0.3);
        }
        
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 25px rgba(204, 255, 0, 0.5);
        }
        
        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(204, 255, 0, 0.3);
        }
        
        .btn-ghost {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid rgba(255, 255, 255, 0.2);
        }
        
        .btn-ghost:hover {
            background: rgba(255, 255, 255, 0.1);
            border-color: rgba(255, 255, 255, 0.4);
        }
        
        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-primary);
            width: 40px;
            height: 40px;
            border-radius: 10px;
            cursor: pointer;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            transition: all 0.3s ease;
        }
        
        .nav-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }
        
        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 8px;
            padding: 16px 24px;
            background: rgba(15, 12, 32, 0.98);
            border-bottom: 1px solid var(--border-color);
        }
        
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            border-radius: 8px;
        }
        
        /* Hero */
        .hero {
            padding: 140px 0 80px;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.95), rgba(11, 26, 48, 0.9)), url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
            border-bottom: 1px solid var(--border-color);
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 30% 50%, rgba(204, 255, 0, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }
        
        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }
        
        .hero-text h1 {
            font-size: 48px;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 24px;
            letter-spacing: -1px;
            background: linear-gradient(135deg, #FFFFFF 0%, #CCFF00 50%, #00F0FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .hero-text p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            line-height: 1.7;
        }
        
        .hero-stats {
            display: flex;
            gap: 40px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        
        .stat-item {
            text-align: left;
        }
        
        .stat-number {
            font-size: 36px;
            font-weight: 800;
            color: var(--accent-1);
            line-height: 1;
            display: block;
        }
        
        .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        
        .hero-image {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow-neon);
            border: 1px solid rgba(0, 240, 255, 0.3);
        }
        
        .hero-image img {
            width: 100%;
            height: auto;
            display: block;
        }
        
        .hero-image::after {
            content: 'MẸO TÍNH ĐIỂM';
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(15, 12, 32, 0.85);
            color: var(--accent-1);
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 14px;
            font-weight: 700;
            letter-spacing: 1px;
            border: 1px solid var(--accent-1);
        }
        
        /* Sections */
        .section {
            padding: 80px 0;
        }
        
        .section-alt {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
        }
        
        .section-header {
            margin-bottom: 48px;
            max-width: 700px;
        }
        
        .section-header h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
            line-height: 1.3;
        }
        
        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        .tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-1);
            border: 1px solid rgba(204, 255, 0, 0.3);
        }
        
        .tag-cyan {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-2);
            border-color: rgba(0, 240, 255, 0.3);
        }
        
        /* Cards */
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 24px;
        }
        
        .card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: var(--radius);
            padding: 28px;
            transition: all 0.3s ease;
            position: relative;
        }
        
        .card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-1);
            box-shadow: 0 12px 35px rgba(204, 255, 0, 0.2);
        }
        
        .card-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: rgba(204, 255, 0, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
            font-size: 22px;
            color: var(--accent-1);
            border: 1px solid rgba(204, 255, 0, 0.25);
        }
        
        .card h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            line-height: 1.4;
        }
        
        .card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        /* Point table */
        .point-table {
            width: 100%;
            border-collapse: collapse;
            background: rgba(15, 12, 32, 0.7);
            border-radius: var(--radius);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }
        
        .point-table th,
        .point-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 15px;
        }
        
        .point-table th {
            background: rgba(204, 255, 0, 0.1);
            color: var(--accent-1);
            font-weight: 700;
            font-size: 14px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        
        .point-table tr:last-child td {
            border-bottom: none;
        }
        
        .point-table tr:hover td {
            background: rgba(255, 255, 255, 0.03);
        }
        
        /* Process steps */
        .process-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 32px;
            counter-reset: step;
        }
        
        .step-item {
            position: relative;
            padding-left: 48px;
            counter-increment: step;
        }
        
        .step-item::before {
            content: counter(step);
            position: absolute;
            left: 0;
            top: 0;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-1), #a8e600);
            color: #0F0C20;
            font-weight: 800;
            font-size: 16px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 4px 12px rgba(204, 255, 0, 0.4);
        }
        
        .step-item h4 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        
        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
            max-width: 800px;
        }
        
        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            border-color: var(--accent-1);
        }
        
        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            font-weight: 600;
            font-size: 16px;
            user-select: none;
            transition: all 0.3s ease;
        }
        
        .faq-question:hover {
            color: var(--accent-1);
        }
        
        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-1);
            flex-shrink: 0;
        }
        
        .faq-item.open .faq-question i {
            transform: rotate(180deg);
        }
        
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s ease;
            padding: 0 24px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 20px;
        }
        
        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.12), rgba(0, 240, 255, 0.08));
            border-top: 1px solid var(--border-color);
            border-bottom: 1px solid var(--border-color);
            padding: 80px 0;
            text-align: center;
        }
        
        .cta-section h2 {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }
        
        .cta-section p {
            font-size: 18px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }
        
        /* Footer */
        .footer {
            background: rgba(11, 26, 48, 0.8);
            border-top: 1px solid var(--border-color);
            padding: 64px 0 32px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 48px;
        }
        
        .footer h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-1);
        }
        
        .footer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 8px;
        }
        
        .footer a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s ease;
            display: inline-block;
        }
        
        .footer a:hover {
            color: var(--accent-1);
        }
        
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 13px;
            color: var(--text-secondary);
        }
        
        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(15, 12, 32, 0.85), rgba(15, 12, 32, 0.85)), linear-gradient(135deg, var(--accent-1), var(--accent-2));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-2);
            font-size: 22px;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.45);
            transition: all 0.3s ease;
            opacity: 0.6;
            animation: fab-breathe 3s ease-in-out infinite;
        }
        
        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            animation-play-state: paused;
        }
        
        .fab:active {
            transform: scale(0.95);
            border-color: #FF007F;
        }
        
        .fab::after {
            content: 'HOT';
            position: absolute;
            top: -6px;
            right: -6px;
            background: #FF007F;
            color: #fff;
            font-size: 9px;
            font-weight: 800;
            padding: 2px 6px;
            border-radius: 10px;
            letter-spacing: 0.5px;
            animation: blink 1.5s ease-in-out infinite;
        }
        
        @keyframes fab-breathe {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.04); }
        }
        
        @keyframes blink {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        
        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            
            .hero-text h1 {
                font-size: 40px;
            }
            
            .hero-image {
                max-width: 600px;
                margin: 0 auto;
            }
        }
        
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            
            .nav-toggle {
                display: flex;
            }
            
            .mobile-menu {
                display: none;
            }
            
            .mobile-menu.open {
                display: flex;
            }
            
            .hero {
                padding: 120px 0 60px;
            }
            
            .hero-text h1 {
                font-size: 32px;
            }
            
            .hero-text p {
                font-size: 16px;
            }
            
            .section {
                padding: 60px 0;
            }
            
            .section-header h2 {
                font-size: 28px;
            }
            
            .card-grid {
                grid-template-columns: 1fr;
            }
            
            .process-steps {
                grid-template-columns: 1fr;
            }
            
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            
            .hero-stats {
                gap: 24px;
            }
            
            .stat-number {
                font-size: 28px;
            }
            
            .header-actions .btn {
                padding: 8px 14px;
                font-size: 13px;
            }
            
            .point-table th,
            .point-table td {
                padding: 12px 14px;
                font-size: 13px;
            }
        }
        
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            
            .hero-text h1 {
                font-size: 26px;
            }
            
            .hero-stats {
                gap: 16px;
            }
            
            .stat-number {
                font-size: 24px;
            }
            
            .logo {
                font-size: 16px;
            }
            
            .logo i {
                font-size: 20px;
            }
            
            .header-actions {
                gap: 8px;
            }
            
            .header-actions .btn {
                padding: 6px 10px;
                font-size: 12px;
            }
            
            .fab {
                width: 48px;
                height: 48px;
                font-size: 18px;
                left: 12px;
                bottom: 80px;
            }
            
            .cta-section h2 {
                font-size: 24px;
            }
        }