/* roulang page: index */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --card-bg: #131A2B;
            --card-bg-alt: #161E33;
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-electric: #00D4FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: #1E293B;
            --border-active: #00F0FF;
            --gradient-primary: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --gradient-dark: linear-gradient(180deg, #08090F 0%, #0D111E 100%);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.6);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --radius-xs: 8px;
            --space-xs: 8px;
            --space-sm: 16px;
            --space-md: 24px;
            --space-lg: 40px;
            --space-xl: 64px;
            --space-2xl: 96px;
            --font-family: 'Be Vietnam Pro', 'Inter', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-family);
            background-color: var(--primary-bg);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 50% 0%, rgba(0, 82, 255, 0.15) 0%, transparent 50%);
            background-repeat: no-repeat;
        }

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

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            border: none;
            background: none;
        }

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

        h1, h2, h3, h4, h5, h6 {
            line-height: 1.25;
            font-weight: 700;
            color: var(--text-primary);
        }

        h1 {
            font-size: clamp(2.2rem, 6vw, 3.5rem);
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: clamp(1.8rem, 4.5vw, 2.6rem);
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: clamp(1.3rem, 3vw, 1.75rem);
        }

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

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 28px;
            font-weight: 600;
            border-radius: 50px;
            transition: var(--transition-smooth);
            font-size: 1rem;
            letter-spacing: 0.01em;
            white-space: nowrap;
            text-align: center;
        }

        .btn-primary {
            background: var(--gradient-primary);
            color: #08090F;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.4);
            border: 1px solid transparent;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
        }

        .btn-outline {
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            background: transparent;
        }

        .btn-outline:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--shadow-neon);
            transform: translateY(-2px);
        }

        .btn-lg {
            padding: 18px 40px;
            font-size: 1.125rem;
        }

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 50px;
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }

        .tag-hot {
            background: rgba(255, 0, 127, 0.2);
            color: #FF007F;
            border-color: rgba(255, 0, 127, 0.4);
        }

        .text-gradient {
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
        }

        .nav {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
        }

        .nav-logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.03em;
        }

        .nav-logo span {
            color: var(--accent-cyan);
        }

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

        .nav-links a {
            font-weight: 500;
            color: var(--text-secondary);
            font-size: 0.95rem;
            transition: var(--transition-fast);
            position: relative;
        }

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

        .nav-links a.active::after {
            content: '';
            position: absolute;
            bottom: -6px;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-login {
            font-weight: 600;
            color: var(--text-secondary);
            background: transparent;
            padding: 10px 18px;
            border-radius: 50px;
            transition: var(--transition-fast);
        }

        .btn-login:hover {
            color: var(--text-primary);
        }

        .btn-signup {
            background: var(--gradient-primary);
            color: #08090F;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 50px;
            box-shadow: 0 0 15px rgba(0, 82, 255, 0.4);
        }

        .btn-signup:hover {
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            transform: scale(1.03);
        }

        .mobile-menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: transparent;
            border: none;
            cursor: pointer;
            padding: 8px;
        }

        .mobile-menu-toggle span {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            transition: var(--transition-fast);
            border-radius: 2px;
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--border-subtle);
            }

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

            .nav-actions {
                gap: 8px;
            }

            .btn-login, .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }

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

        /* Hero Bento Grid */
        .hero {
            padding: var(--space-xl) 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(8,9,15,0.85) 0%, rgba(13,17,30,0.9) 100%);
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 32px;
            align-items: center;
        }

        .hero-text {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .hero-text h1 {
            font-size: clamp(2.8rem, 7vw, 4.5rem);
            line-height: 1.15;
        }

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

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }

        .hero-mini-cards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
        }

        .hero-mini-card {
            background: rgba(19, 26, 43, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 8px;
            transition: var(--transition-smooth);
        }

        .hero-mini-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
        }

        .hero-mini-icon {
            font-size: 2rem;
        }

        .hero-mini-title {
            font-weight: 700;
            font-size: 1.1rem;
        }

        .hero-mini-num {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-primary);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        @media (max-width: 860px) {
            .hero-content {
                grid-template-columns: 1fr;
            }
            .hero-mini-cards {
                grid-template-columns: 1fr;
            }
        }

        /* Section Spacing */
        .section {
            padding: var(--space-2xl) 0;
        }

        .section-header {
            margin-bottom: 48px;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .section-header.badge {
            align-self: flex-start;
        }

        .section-header h2 {
            margin: 0;
        }

        .section-header p {
            max-width: 600px;
            font-size: 1.05rem;
        }

        /* Brand Story */
        .story-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .story-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .story-image img {
            width: 100%;
            height: auto;
        }

        .story-text h2 {
            margin-bottom: 20px;
        }

        .story-text p {
            font-size: 1.05rem;
            line-height: 1.75;
            margin-bottom: 24px;
        }

        .story-features {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 16px;
        }

        .story-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .story-feature-item span {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        @media (max-width: 768px) {
            .story-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
        }

        /* Featured Cards */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 28px;
        }

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

        .feature-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
        }

        .feature-card-icon {
            font-size: 2.5rem;
            margin-bottom: 16px;
        }

        .feature-card h3 {
            margin-bottom: 10px;
        }

        .feature-card p {
            font-size: 0.95rem;
        }

        /* Testimonials Bubble Wall */
        .testimonials-wall {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 24px;
        }

        .testimonial-bubble {
            background: var(--card-bg-alt);
            border-radius: 24px 24px 24px 4px;
            padding: 24px;
            border: 1px solid var(--border-subtle);
            transition: var(--transition-smooth);
            position: relative;
        }

        .testimonial-bubble:hover {
            border-color: var(--accent-cyan);
        }

        .testimonial-bubble p {
            font-style: italic;
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--gradient-primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: #08090F;
        }

        .author-name {
            font-weight: 700;
            font-size: 0.9rem;
        }

        .author-role {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* CMS News List */
        .news-layout {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 40px;
            align-items: start;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 0;
        }

        .news-item {
            padding: 20px 0;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            flex-direction: column;
            gap: 6px;
            transition: var(--transition-fast);
        }

        .news-item:hover {
            padding-left: 12px;
            border-left: 2px solid var(--accent-cyan);
        }

        .news-item a {
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-primary);
        }

        .news-item a:hover {
            color: var(--accent-cyan);
        }

        .news-item .news-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }

        .news-item .news-excerpt {
            font-size: 0.9rem;
            color: var(--text-secondary);
            margin: 0;
        }

        .news-sidebar {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid var(--border-subtle);
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-sidebar h3 {
            font-size: 1.2rem;
        }

        .sidebar-tips p {
            font-size: 0.9rem;
            margin-bottom: 12px;
        }

        @media (max-width: 768px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
            background: var(--card-bg-alt);
        }

        .faq-item h3 {
            margin-bottom: 10px;
            font-size: 1.15rem;
        }

        .faq-item p {
            font-size: 0.95rem;
        }

        /* CTA Section */
        .cta-section {
            background: var(--card-bg-alt);
            border-radius: var(--radius-lg);
            padding: 64px 32px;
            text-align: left;
            border: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-section h2 {
            margin-bottom: 16px;
        }

        .cta-section p {
            max-width: 500px;
            margin-bottom: 32px;
        }

        .cta-buttons {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
        }

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

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: 40px;
        }

        .footer-col h4 {
            margin-bottom: 16px;
            color: var(--text-primary);
            font-size: 1rem;
        }

        .footer-col a, .footer-col p {
            font-size: 0.9rem;
            color: var(--text-muted);
            display: block;
            margin-bottom: 8px;
            transition: var(--transition-fast);
        }

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

        .footer-bottom {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(16px);
            border: 1.5px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: 0;
            border-radius: 50px;
            padding: 1.5px;
            background: linear-gradient(135deg, #00F0FF, #0052FF);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
        }

        @media (max-width: 768px) {
            .fab-left {
                left: 16px;
                bottom: 80px;
                width: 48px;
                height: 48px;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --card-bg: rgba(15, 12, 32, 0.8);
            --card-border: rgba(0, 240, 255, 0.3);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --neon-glow-lime: 0 0 15px rgba(204, 255, 0, 0.5);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --spacing-section: 80px;
            --spacing-inner: 40px;
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: var(--font-heading);
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(15, 12, 32, 0.95);
            border-bottom: 1px solid rgba(0, 240, 255, 0.4);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.4rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-decoration: none;
            letter-spacing: -0.5px;
            white-space: nowrap;
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
            transition: var(--transition-smooth);
        }

        .logo:hover {
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.8);
            color: #FFFFFF;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.95rem;
            font-weight: 500;
            position: relative;
            transition: var(--transition-smooth);
            padding: 8px 0;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: var(--neon-glow);
        }

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

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .btn-login {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 8px 20px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
        }

        .btn-signup {
            background: var(--accent-cyan);
            color: var(--secondary-bg);
            border: none;
            padding: 10px 24px;
            border-radius: 8px;
            font-size: 0.9rem;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-smooth);
            white-space: nowrap;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .btn-signup:hover {
            background: #FFFFFF;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.6);
            transform: translateY(-1px);
        }

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

        .mobile-menu-btn {
            display: none;
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 12px;
            border-radius: 6px;
            transition: var(--transition-smooth);
        }

        .mobile-menu-btn:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* Hero Section */
        .hero-section {
            padding-top: 130px;
            padding-bottom: 60px;
            position: relative;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            min-height: 500px;
            display: flex;
            align-items: center;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.9) 0%, rgba(11, 26, 48, 0.85) 100%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(204, 255, 0, 0.15);
            border: 1px solid var(--accent-lime);
            color: var(--accent-lime);
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            box-shadow: 0 0 10px rgba(204, 255, 0, 0.2);
        }

        .hero-title {
            font-size: clamp(2.2rem, 5vw, 3.4rem);
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 20px;
            color: var(--text-white);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
        }

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

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-silver);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
            margin-bottom: 36px;
        }

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

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            line-height: 1;
        }

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

        .btn-group {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: var(--secondary-bg);
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 700;
            border: none;
            cursor: pointer;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-smooth);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .btn-primary:hover {
            background: #FFFFFF;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.6);
            transform: translateY(-2px);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            padding: 14px 32px;
            border-radius: 10px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            text-decoration: none;
            transition: var(--transition-smooth);
        }

        .btn-secondary:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }

        /* Section Styling */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--text-white);
            text-align: left;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 48px;
            text-align: left;
            max-width: 600px;
        }

        /* Steps Grid */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 24px;
        }

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

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

        .step-number {
            font-size: 3.5rem;
            font-weight: 800;
            color: rgba(0, 240, 255, 0.15);
            position: absolute;
            top: 20px;
            right: 24px;
            line-height: 1;
        }

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

        .step-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text-white);
        }

        .step-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        /* Feature Grid */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .feature-item {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 24px;
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

        .feature-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
        }

        .feature-icon-box {
            font-size: 2rem;
            min-width: 50px;
            color: var(--accent-cyan);
        }

        .feature-text h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 6px;
            color: var(--text-white);
        }

        .feature-text p {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        /* Comparison Box */
        .comparison-box {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: left;
        }

        .compare-table {
            width: 100%;
            border-collapse: collapse;
            margin-top: 24px;
        }

        .compare-table th {
            text-align: left;
            padding: 12px 16px;
            border-bottom: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .compare-table td {
            padding: 14px 16px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--text-silver);
        }

        .compare-table .check-icon {
            color: var(--accent-lime);
            font-weight: bold;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            max-width: 800px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            cursor: pointer;
            transition: var(--transition-smooth);
        }

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

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-white);
        }

        .faq-answer {
            margin-top: 12px;
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

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

        .faq-toggle {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
        }

        .faq-item.open .faq-toggle {
            transform: rotate(45deg);
        }

        /* CTA Block */
        .cta-block {
            text-align: center;
            padding: 60px 40px;
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.1), rgba(204, 255, 0, 0.05));
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
        }

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

        .cta-block p {
            font-size: 1.05rem;
            color: var(--text-silver);
            margin-bottom: 28px;
        }

        /* Footer */
        .footer {
            background: rgba(15, 12, 32, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.3);
            padding: 60px 0 30px;
            margin-top: var(--spacing-section);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }

        .footer-col p,
        .footer-col a {
            color: var(--text-silver);
            font-size: 0.9rem;
            text-decoration: none;
            display: block;
            margin-bottom: 10px;
            transition: var(--transition-smooth);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 100px;
            width: 56px;
            height: 56px;
            background: rgba(15, 12, 32, 0.9);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(15,12,32,0.9), rgba(15,12,32,0.9)), linear-gradient(135deg, #CCFF00, #00F0FF);
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            z-index: 999;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            animation: float 3s ease-in-out infinite;
        }

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

        .fab:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
            animation: none;
        }

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

        .fab-notification {
            position: absolute;
            top: 2px;
            right: 2px;
            width: 12px;
            height: 12px;
            background: #FF007F;
            border-radius: 50%;
            animation: blink 1.5s infinite;
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .hero-stats {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid rgba(0, 240, 255, 0.3);
                backdrop-filter: blur(20px);
            }

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

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

            .hero-section {
                min-height: 400px;
            }

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

            .section {
                padding: 60px 0;
            }

            .btn-group {
                flex-direction: column;
            }

            .hero-stats {
                flex-direction: column;
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .compare-table {
                font-size: 0.8rem;
            }
            .comparison-box {
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #0B1A30;
            --bg-secondary: #0F0C20;
            --bg-card: #14213D;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #7B8794;
            --border-color: rgba(0, 240, 255, 0.15);
            --border-glow: rgba(0, 240, 255, 0.4);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --font-heading: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.15s ease;
            --transition-smooth: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
            --container-max: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: linear-gradient(175deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

        /* Header & Navigation */
        .header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-color);
            transition: background var(--transition-smooth);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 0;
            gap: 20px;
            flex-wrap: wrap;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            text-decoration: none;
            letter-spacing: -0.3px;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.2rem;
            color: #0B1A30;
            font-weight: 800;
        }

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

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 500;
            font-size: 0.95rem;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

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

        .nav-links a.active {
            color: var(--accent-cyan);
            font-weight: 600;
        }

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

        .btn-nav-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            padding: 9px 20px;
            border-radius: 22px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
        }

        .btn-nav-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

        .btn-nav-signup {
            background: linear-gradient(135deg, var(--accent-cyan), #0099CC);
            border: none;
            color: #0B1A30;
            padding: 10px 22px;
            border-radius: 22px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            white-space: nowrap;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }

        .btn-nav-signup:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
            transform: translateY(-1px);
        }

        /* Main Content */
        .main-content {
            flex: 1;
            padding: 40px 0 60px;
        }

        .article-container {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

        .article-body {
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 36px 40px;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-card);
        }

        .article-body h1 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-primary);
            margin-bottom: 12px;
            letter-spacing: -0.4px;
        }

        .article-meta {
            display: flex;
            gap: 16px;
            color: var(--text-muted);
            font-size: 0.9rem;
            margin-bottom: 28px;
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border-color);
        }

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

        .article-content {
            font-size: 1.05rem;
            line-height: 1.8;
            color: var(--text-secondary);
            word-break: break-word;
        }

        .article-content p {
            margin-bottom: 18px;
        }

        .article-content h2 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 32px 0 14px;
            padding-bottom: 8px;
            border-bottom: 2px solid rgba(0, 240, 255, 0.25);
        }

        .article-content img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-md);
            margin: 20px 0;
        }

        .article-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-not-found {
            text-align: center;
            padding: 80px 24px;
            grid-column: 1 / -1;
        }

        .article-not-found h2 {
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 24px;
        }

        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-cyan), #0099CC);
            color: #0B1A30;
            padding: 12px 28px;
            border-radius: 24px;
            font-weight: 700;
            text-decoration: none;
            transition: all var(--transition-smooth);
        }

        .btn-back-home:hover {
            box-shadow: var(--shadow-neon);
            transform: translateY(-1px);
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

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

        .sidebar-card h3 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-cyan);
        }

        .sidebar-card p,
        .sidebar-card li {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

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

        .sidebar-card ul li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border-color);
        }

        .sidebar-card ul li:last-child {
            border-bottom: none;
        }

        .cta-sidebar-btn {
            display: block;
            width: 100%;
            text-align: center;
            background: linear-gradient(135deg, var(--accent-lime), #99CC00);
            color: #0B1A30;
            padding: 13px 20px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 1rem;
            text-decoration: none;
            margin-top: 12px;
            transition: all var(--transition-smooth);
        }

        .cta-sidebar-btn:hover {
            box-shadow: 0 0 24px rgba(204, 255, 0, 0.45);
            transform: translateY(-1px);
        }

        /* Footer */
        .footer {
            background: rgba(15, 12, 32, 0.95);
            border-top: 1px solid var(--border-color);
            padding: 48px 0 28px;
            margin-top: auto;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .footer-col p,
        .footer-col a {
            color: var(--text-muted);
            font-size: 0.9rem;
            text-decoration: none;
            display: block;
            margin-bottom: 8px;
            transition: color var(--transition-fast);
        }

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

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

        /* FAB */
        .fab {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 28px;
            background: rgba(0, 0, 0, 0.7);
            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-cyan);
            font-size: 1.4rem;
            cursor: pointer;
            transition: all var(--transition-smooth);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            text-decoration: none;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 30px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            z-index: -1;
            opacity: 0.7;
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask-composite: exclude;
            -webkit-mask-composite: xor;
            padding: 2px;
        }

        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.6);
            color: #fff;
        }

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

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

        @media (max-width: 768px) {
            .nav-bar {
                flex-direction: column;
                gap: 10px;
            }

            .nav-links {
                justify-content: center;
                gap: 4px;
            }

            .nav-links a {
                padding: 6px 12px;
                font-size: 0.85rem;
            }

            .nav-actions {
                width: 100%;
                justify-content: center;
            }

            .article-body {
                padding: 24px 20px;
            }

            .article-body h1 {
                font-size: 1.6rem;
            }

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

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

            .fab {
                left: 12px;
                bottom: 80px;
                width: 46px;
                height: 46px;
            }
        }

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

            .logo {
                font-size: 1.1rem;
            }

            .nav-links a {
                padding: 5px 10px;
                font-size: 0.8rem;
            }

            .btn-nav-login,
            .btn-nav-signup {
                padding: 7px 16px;
                font-size: 0.8rem;
            }

            .article-body h1 {
                font-size: 1.35rem;
            }

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

/* roulang page: category2 */
:root {
            --bg-primary: #0A2E1C;
            --bg-secondary: #123E25;
            --accent-gold: #FFD700;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-muted: #D1F2EB;
            --border-gold: rgba(255, 215, 0, 0.3);
            --border-red: rgba(211, 47, 47, 0.5);
            --shadow-gold: 0 4px 20px rgba(255, 215, 0, 0.3);
            --shadow-red: 0 4px 15px rgba(211, 47, 47, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --spacing-xs: 0.5rem;
            --spacing-sm: 1rem;
            --spacing-md: 1.5rem;
            --spacing-lg: 2.5rem;
            --spacing-xl: 4rem;
            --spacing-2xl: 6rem;
            --font-heading: 'Segoe UI', 'Roboto', sans-serif;
            --font-body: 'Segoe UI', 'Roboto', sans-serif;
            --transition-base: all 0.3s ease;
        }
        *, *::before, *::after {
            box-sizing: border-box;
        }
        body {
            font-family: var(--font-body);
            line-height: 1.6;
            background-color: var(--bg-primary);
            color: var(--text-white);
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-white);
            margin-top: 0;
        }
        h1 { font-size: clamp(2rem, 5vw, 2.8rem); margin-bottom: var(--spacing-md); }
        h2 { font-size: clamp(1.8rem, 4vw, 2.2rem); margin-bottom: var(--spacing-md); }
        h3 { font-size: clamp(1.4rem, 3vw, 1.6rem); margin-bottom: var(--spacing-sm); }
        h4 { font-size: 1.2rem; margin-bottom: var(--spacing-xs); }
        p { margin-bottom: var(--spacing-sm); color: var(--text-muted); }
        a {
            color: var(--accent-gold);
            text-decoration: none;
            transition: var(--transition-base);
        }
        a:hover { color: var(--accent-red); text-decoration: underline; }
        img { max-width: 100%; height: auto; display: block; }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: var(--spacing-sm);
            padding-right: var(--spacing-sm);
        }
        .header {
            background: var(--bg-secondary);
            border-bottom: 2px solid var(--border-gold);
            position: sticky;
            top: 0;
            z-index: 1000;
            backdrop-filter: blur(10px);
        }
        .navbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: var(--spacing-sm) 0;
            flex-wrap: wrap;
        }
        .logo {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-gold);
            white-space: nowrap;
        }
        .logo:hover { color: var(--accent-red); text-decoration: none; }
        .nav-links {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }
        .nav-links a {
            color: var(--text-muted);
            font-weight: 600;
            padding: var(--spacing-xs) var(--spacing-sm);
            border-radius: var(--radius-sm);
            transition: var(--transition-base);
            white-space: nowrap;
        }
        .nav-links a.active {
            color: var(--accent-gold);
            border-bottom: 2px solid var(--accent-gold);
        }
        .nav-links a:hover {
            color: var(--accent-gold);
            text-decoration: none;
            background: rgba(255, 215, 0, 0.05);
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .btn-login {
            color: var(--text-muted);
            font-weight: 600;
            background: transparent;
            border: 1px solid var(--border-gold);
            padding: 0.5rem 1.2rem;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: var(--transition-base);
        }
        .btn-login:hover {
            border-color: var(--accent-gold);
            color: var(--accent-gold);
        }
        .btn-signup {
            background: var(--accent-red);
            color: #fff;
            font-weight: 700;
            border: none;
            padding: 0.5rem 1.5rem;
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: var(--shadow-red);
        }
        .btn-signup:hover {
            background: #c62828;
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(211, 47, 47, 0.5);
        }
        .hero-section {
            background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            padding: var(--spacing-2xl) 0 var(--spacing-xl);
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-gold);
        }
        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.08;
            z-index: 0;
        }
        .hero-content {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-xl);
            align-items: center;
        }
        .hero-text h1 {
            color: var(--accent-gold);
        }
        .hero-badges {
            display: flex;
            gap: var(--spacing-sm);
            margin-top: var(--spacing-md);
            flex-wrap: wrap;
        }
        .badge-tag {
            background: rgba(255, 215, 0, 0.1);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            padding: 0.3rem 0.8rem;
            border-radius: 1rem;
            font-size: 0.85rem;
            font-weight: 600;
        }
        .hero-visual {
            background: rgba(18, 62, 37, 0.6);
            padding: var(--spacing-lg);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-gold);
            backdrop-filter: blur(10px);
        }
        .hero-visual img {
            border-radius: var(--radius-md);
            margin-bottom: var(--spacing-md);
        }
        .stat-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-sm);
        }
        .stat-item {
            text-align: center;
            padding: var(--spacing-sm);
            background: rgba(0,0,0,0.3);
            border-radius: var(--radius-sm);
        }
        .stat-number {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold);
        }
        .stat-label {
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        .section {
            padding: var(--spacing-2xl) 0;
            border-bottom: 1px solid rgba(255, 215, 0, 0.1);
        }
        .section-alt {
            background: var(--bg-secondary);
        }
        .section-title {
            margin-bottom: var(--spacing-lg);
            position: relative;
            padding-bottom: var(--spacing-sm);
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent-gold);
            border-radius: 2px;
        }
        .card-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: var(--spacing-lg);
        }
        .card {
            background: var(--bg-secondary);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: var(--transition-base);
            position: relative;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-gold);
            border-color: var(--accent-gold);
        }
        .card-icon {
            font-size: 2.5rem;
            margin-bottom: var(--spacing-sm);
            color: var(--accent-gold);
        }
        .card h3 {
            color: var(--text-white);
            margin-bottom: var(--spacing-xs);
        }
        .card p {
            color: var(--text-muted);
            line-height: 1.6;
        }
        .card-badge {
            position: absolute;
            top: 1rem;
            right: 1rem;
            background: var(--accent-red);
            color: #fff;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            font-size: 0.75rem;
            font-weight: 700;
        }
        .timeline {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
            position: relative;
            padding-left: var(--spacing-lg);
        }
        .timeline::before {
            content: '';
            position: absolute;
            left: 20px;
            top: 0;
            width: 2px;
            height: 100%;
            background: var(--border-gold);
        }
        .timeline-item {
            position: relative;
            padding-left: var(--spacing-lg);
        }
        .timeline-item::before {
            content: '';
            position: absolute;
            left: -22px;
            top: 5px;
            width: 16px;
            height: 16px;
            background: var(--accent-gold);
            border-radius: 50%;
            border: 3px solid var(--bg-primary);
        }
        .timeline-item h4 {
            color: var(--accent-gold);
            margin-bottom: 0.3rem;
        }
        .tips-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: var(--spacing-md);
        }
        .tips-list li {
            padding: var(--spacing-sm) var(--spacing-md);
            background: rgba(255, 215, 0, 0.05);
            border-left: 3px solid var(--accent-gold);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            transition: var(--transition-base);
        }
        .tips-list li:hover {
            background: rgba(255, 215, 0, 0.1);
            transform: translateX(4px);
        }
        .faq-item {
            margin-bottom: var(--spacing-sm);
            border-bottom: 1px solid var(--border-gold);
            padding-bottom: var(--spacing-sm);
        }
        .faq-question {
            font-weight: 700;
            color: var(--text-white);
            cursor: pointer;
            padding: var(--spacing-sm) 0;
            font-size: 1.1rem;
        }
        .faq-answer {
            color: var(--text-muted);
            margin-top: 0.3rem;
        }
        .cta-section {
            background: linear-gradient(180deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
            padding: var(--spacing-2xl) 0;
            text-align: center;
            border-top: 2px solid var(--border-gold);
        }
        .btn-primary {
            background: var(--accent-red);
            color: #fff;
            font-weight: 700;
            padding: 0.8rem 2.5rem;
            border: none;
            border-radius: var(--radius-md);
            cursor: pointer;
            font-size: 1.1rem;
            transition: var(--transition-base);
            box-shadow: var(--shadow-red);
            display: inline-block;
        }
        .btn-primary:hover {
            background: #c62828;
            transform: scale(1.05);
        }
        .btn-secondary {
            background: transparent;
            color: var(--accent-gold);
            border: 2px solid var(--accent-gold);
            padding: 0.7rem 2rem;
            border-radius: var(--radius-md);
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            display: inline-block;
        }
        .btn-secondary:hover {
            background: var(--accent-gold);
            color: var(--bg-primary);
        }
        .footer {
            background: #051a10;
            padding: var(--spacing-xl) 0 var(--spacing-md);
            border-top: 2px solid var(--border-gold);
            color: var(--text-muted);
            font-size: 0.9rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-lg);
        }
        .footer-col h4 {
            color: var(--accent-gold);
            font-size: 1.1rem;
            margin-bottom: var(--spacing-sm);
        }
        .footer-col a {
            display: block;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }
        .footer-col a:hover {
            color: var(--accent-gold);
        }
        .footer-bottom {
            text-align: center;
            padding-top: var(--spacing-md);
            border-top: 1px solid var(--border-gold);
        }
        .fab-left {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1000;
            width: 56px;
            height: 56px;
            background: var(--bg-secondary);
            border: 3px solid var(--accent-gold);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            transition: var(--transition-base);
            animation: pulse 2s infinite;
            font-size: 1.4rem;
        }
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 6px 25px rgba(255, 215, 0, 0.5);
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }
        @media (max-width: 992px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .hero-visual {
                margin-top: var(--spacing-lg);
            }
            .nav-links {
                gap: var(--spacing-sm);
            }
        }
        @media (max-width: 768px) {
            .navbar {
                flex-direction: column;
                gap: var(--spacing-sm);
            }
            .nav-links {
                justify-content: center;
            }
            .card-grid {
                grid-template-columns: 1fr;
            }
            .hero-section {
                padding: var(--spacing-xl) 0;
            }
        }
        @media (max-width: 520px) {
            .nav-actions {
                flex-wrap: wrap;
                justify-content: center;
            }
            .btn-login, .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.9rem;
            }
            .hero-text h1 {
                font-size: 1.8rem;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                bottom: 5rem;
                font-size: 1.2rem;
            }
        }