/* roulang page: index */
:root {
            --bg-deep: #08090F;
            --bg-panel: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 82, 255, 0.25);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        a:hover {
            color: #66F0FF;
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

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

        h1, h2, h3, h4, h5, h6 {
            font-family: var(--font-heading);
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        h1 {
            font-size: 2.75rem;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: 2rem;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 1.5rem;
        }

        p {
            margin-bottom: 1rem;
            color: var(--text-silver);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--accent-cyan));
        }

        .logo:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width 0.3s ease;
            border-radius: 2px;
        }

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

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
        }

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 9px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.5);
        }

        .btn-signup:hover {
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.8);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Hero Section */
        .hero-section {
            position: relative;
            padding: 140px 0 90px;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 55%),
                        var(--bg-deep);
            border-bottom: 1px solid var(--card-border);
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 50px;
        }

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

        .hero-text h1 {
            font-size: 2.85rem;
            background: linear-gradient(135deg, #FFFFFF 0%, #A0D8FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 1.25rem;
        }

        .hero-text .hero-desc {
            font-size: 1.15rem;
            color: var(--text-silver);
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 14px 32px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.5);
            text-transform: uppercase;
            letter-spacing: 0.03em;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
            transform: translateY(-2px);
            color: #08090F;
        }

        .btn-secondary {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 12px 28px;
            border-radius: 10px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-secondary:hover {
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .hero-visual {
            flex: 1 1 400px;
            position: relative;
            z-index: 2;
        }

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 0 30px rgba(0, 82, 255, 0.4);
            border: 1px solid var(--card-border);
        }

        .hero-stats {
            display: flex;
            gap: 30px;
            margin-top: 2rem;
            flex-wrap: wrap;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
        }

        .stat-number {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

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

        /* Section Common */
        section {
            padding: 80px 0;
            position: relative;
        }

        .section-title {
            font-size: 2rem;
            margin-bottom: 0.75rem;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-silver);
            margin-bottom: 3rem;
            max-width: 650px;
        }

        /* Countdown Section */
        .countdown-section {
            background: linear-gradient(135deg, #0A1120 0%, #0D1425 100%);
            border-top: 1px solid var(--card-border);
            border-bottom: 1px solid var(--card-border);
            text-align: center;
        }

        .countdown-timer {
            display: flex;
            justify-content: center;
            gap: 24px;
            flex-wrap: wrap;
            margin-top: 2rem;
        }

        .countdown-box {
            background: var(--bg-panel);
            border: 1px solid var(--accent-cyan);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            min-width: 90px;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.2);
        }

        .countdown-number {
            font-size: 2.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            display: block;
        }

        .countdown-label {
            font-size: 0.8rem;
            color: var(--text-silver);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        /* Highlights Wall */
        .highlights-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
            gap: 24px;
            margin-top: 2rem;
        }

        .highlight-card {
            background: var(--card-bg);
            backdrop-filter: blur(8px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px 22px;
            transition: var(--transition-base);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .highlight-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
            transform: translateY(-4px);
        }

        .highlight-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.5));
        }

        .highlight-card h3 {
            font-size: 1.25rem;
            margin-bottom: 0;
        }

        .highlight-card p {
            font-size: 0.95rem;
            color: var(--text-silver);
            margin-bottom: 0;
        }

        /* Ticket Comparison */
        .comparison-table-wrap {
            overflow-x: auto;
            margin-top: 2rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0 12px;
        }

        .comparison-table th {
            background: rgba(0, 82, 255, 0.25);
            color: var(--text-primary);
            padding: 16px 18px;
            text-align: left;
            font-weight: 700;
            font-size: 1rem;
            border-radius: var(--radius-sm) var(--radius-sm) 0 0;
        }

        .comparison-table td {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            padding: 14px 18px;
            color: var(--text-silver);
            border-radius: var(--radius-sm);
        }

        .comparison-table tr:last-child td {
            border-bottom: 1px solid var(--card-border);
        }

        /* News / CMS Section */
        .news-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 30px;
            margin-top: 2rem;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            transition: var(--transition-base);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
        }

        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.2);
        }

        .news-item h4 {
            font-size: 1.05rem;
            margin-bottom: 4px;
        }

        .news-item .news-meta {
            font-size: 0.8rem;
            color: var(--accent-cyan);
        }

        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 24px 20px;
            height: fit-content;
        }

        .news-sidebar h3 {
            font-size: 1.2rem;
            margin-bottom: 1rem;
        }

        .topic-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .topic-tag {
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: var(--accent-cyan);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.82rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .topic-tag:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.3);
        }

        /* Registration CTA */
        .cta-register {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2) 0%, rgba(0, 240, 255, 0.1) 100%);
            border: 1px solid var(--accent-cyan);
            border-radius: var(--radius-lg);
            padding: 50px 40px;
            text-align: center;
        }

        .cta-register h2 {
            margin-bottom: 1rem;
        }

        .cta-register p {
            max-width: 600px;
            margin: 0 auto 2rem;
        }

        /* FAQ Accordion */
        .faq-list {
            max-width: 800px;
            margin: 2rem auto 0;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .faq-question {
            width: 100%;
            background: transparent;
            border: none;
            color: var(--text-primary);
            padding: 18px 22px;
            font-weight: 700;
            font-size: 1rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: var(--transition-base);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.3s;
            padding: 0 22px;
            color: var(--text-silver);
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

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

        .faq-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }

        /* Footer */
        .site-footer {
            background: #05070A;
            border-top: 1px solid var(--card-border);
            padding: 50px 0 30px;
            color: var(--text-silver);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
        }

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

        .footer-col a {
            display: block;
            color: var(--text-silver);
            margin-bottom: 6px;
            font-size: 0.9rem;
        }

        .footer-bottom {
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            text-align: center;
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border-radius: 30px;
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.7), rgba(0,0,0,0.7)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            transition: var(--transition-base);
            animation: floatFab 3s infinite ease-in-out;
        }

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

        .fab-left:hover {
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.08);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            h1 { font-size: 2.2rem; }
            .hero-content { flex-direction: column; }
            .news-grid { grid-template-columns: 1fr; }
        }

        @media (max-width: 768px) {
            .main-nav { display: none; }
            .nav-buttons .btn-login,
            .nav-buttons .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .mobile-toggle { display: block; }
            .hero-text h1 { font-size: 1.9rem; }
            .countdown-box { min-width: 70px; padding: 14px 16px; }
        }

        @media (max-width: 520px) {
            .header-inner { height: 60px; }
            .logo { font-size: 1rem; }
            .hero-stats { gap: 16px; }
            .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
        }

/* roulang page: article */
:root {
            --bg-deep: #08090F;
            --bg-panel: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 82, 255, 0.25);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

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

        a:hover {
            color: #66F0FF;
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--accent-cyan));
        }

        .logo:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width 0.3s ease;
            border-radius: 2px;
        }

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

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
        }

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 9px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.5);
        }

        .btn-signup:hover {
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.8);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Article Page Specific */
        .article-page {
            padding-top: 120px;
            padding-bottom: 80px;
            background: radial-gradient(ellipse at 20% 30%, rgba(0, 82, 255, 0.08) 0%, transparent 55%),
                radial-gradient(ellipse at 80% 70%, rgba(0, 240, 255, 0.05) 0%, transparent 50%),
                var(--bg-deep);
            min-height: 70vh;
        }

        .article-layout {
            display: flex;
            gap: 40px;
            flex-wrap: wrap;
        }

        .article-main {
            flex: 1 1 720px;
            max-width: 720px;
        }

        .article-sidebar {
            flex: 0 0 280px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .article-header {
            margin-bottom: 32px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 16px;
        }

        .article-category-tag {
            display: inline-block;
            background: rgba(0, 82, 255, 0.2);
            border: 1px solid var(--accent-blue);
            color: var(--accent-cyan);
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .article-date {
            color: var(--text-silver);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-date i {
            color: var(--accent-cyan);
            font-size: 0.85rem;
        }

        .article-main h1 {
            font-family: var(--font-heading);
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 0%, #CBD5E1 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .article-featured-image {
            margin-bottom: 32px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }

        .article-featured-image img {
            width: 100%;
            object-fit: cover;
        }

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

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-top: 36px;
            margin-bottom: 16px;
            padding-left: 16px;
            border-left: 3px solid var(--accent-cyan);
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 600;
            color: var(--accent-cyan);
            margin-top: 28px;
            margin-bottom: 12px;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 16px 0 20px 20px;
        }

        .article-content li {
            margin-bottom: 8px;
        }

        .article-content strong {
            color: #FFFFFF;
            font-weight: 700;
        }

        .article-content blockquote {
            background: var(--card-bg);
            border: 1px solid var(--border-glow);
            border-left: 4px solid var(--accent-cyan);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            margin: 24px 0;
            color: var(--text-silver);
            font-style: italic;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-not-found {
            text-align: left;
            padding: 80px 20px;
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            backdrop-filter: blur(10px);
        }

        .article-not-found h2 {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .article-not-found p {
            color: var(--text-silver);
            margin-bottom: 24px;
            font-size: 1.1rem;
        }

        .btn-back-home {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #08090F;
            font-weight: 700;
            padding: 12px 28px;
            border-radius: 8px;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.4);
        }

        .btn-back-home:hover {
            color: #08090F;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.7);
            transform: translateY(-2px);
        }

        /* Sidebar Widgets */
        .sidebar-widget {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            padding: 24px;
            backdrop-filter: blur(8px);
        }

        .sidebar-widget h3 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            padding-bottom: 10px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        }

        .related-post-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: var(--transition-base);
        }

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

        .related-post-item:hover {
            background: rgba(0, 82, 255, 0.05);
            border-radius: 6px;
            padding-left: 8px;
            padding-right: 8px;
        }

        .related-post-thumb {
            flex: 0 0 60px;
            height: 60px;
            border-radius: 6px;
            overflow: hidden;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .related-post-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .related-post-info {
            flex: 1;
        }

        .related-post-info a {
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-primary);
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            transition: var(--transition-base);
        }

        .related-post-info a:hover {
            color: var(--accent-cyan);
            text-shadow: none;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
        }

        .tag-item {
            background: rgba(0, 82, 255, 0.15);
            border: 1px solid rgba(0, 82, 255, 0.3);
            color: var(--text-silver);
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 500;
            transition: var(--transition-base);
            text-decoration: none;
        }

        .tag-item:hover {
            background: rgba(0, 240, 255, 0.2);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            text-shadow: none;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid rgba(0, 82, 255, 0.3);
            padding: 60px 0 30px;
            backdrop-filter: blur(12px);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 16px;
        }

        .footer-col p,
        .footer-col a {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.7;
            display: block;
            margin-bottom: 8px;
            transition: var(--transition-base);
        }

        .footer-col a:hover {
            color: var(--accent-cyan);
            text-shadow: none;
            padding-left: 4px;
        }

        .footer-bottom {
            text-align: center;
            padding-top: 24px;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            font-size: 0.85rem;
            color: var(--text-silver);
        }

        /* Mobile Responsive */
        @media screen and (max-width: 1024px) {
            .article-layout {
                flex-direction: column;
            }

            .article-main {
                max-width: 100%;
            }

            .article-sidebar {
                flex: 0 0 100%;
                flex-direction: row;
                flex-wrap: wrap;
                gap: 16px;
            }

            .sidebar-widget {
                flex: 1 1 250px;
            }
        }

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

            .mobile-toggle {
                display: block;
            }

            .main-nav.open {
                display: flex;
                flex-direction: column;
                position: absolute;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                backdrop-filter: blur(20px);
                padding: 24px;
                gap: 16px;
                border-bottom: 2px solid var(--accent-cyan);
            }

            .article-main h1 {
                font-size: 1.8rem;
            }

            .article-content h2 {
                font-size: 1.5rem;
            }

            .article-sidebar {
                flex-direction: column;
            }
        }

        @media screen and (max-width: 520px) {
            .header-inner {
                height: 60px;
            }

            .logo {
                font-size: 1rem;
            }

            .logo i {
                font-size: 1.2rem;
            }

            .nav-buttons {
                gap: 6px;
            }

            .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }

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

            .article-page {
                padding-top: 90px;
                padding-bottom: 40px;
            }

            .article-main h1 {
                font-size: 1.5rem;
            }

            .article-content {
                font-size: 0.95rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #08090F;
            --bg-panel: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 82, 255, 0.25);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        a:hover {
            color: #66F0FF;
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--accent-cyan));
        }

        .logo:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width 0.3s ease;
            border-radius: 2px;
        }

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

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
        }

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 9px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.5);
        }

        .btn-signup:hover {
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.8);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }

        .page-banner {
            position: relative;
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 82, 255, 0.15) 0%, transparent 60%),
                radial-gradient(ellipse at 70% 30%, rgba(0, 240, 255, 0.08) 0%, transparent 55%),
                var(--bg-deep);
            border-bottom: 1px solid var(--card-border);
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            z-index: 0;
        }

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

        .banner-content h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 18px;
            letter-spacing: -0.02em;
            line-height: 1.2;
        }

        .banner-content p {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        .section-padding {
            padding: 80px 0;
        }

        .section-header {
            margin-bottom: 50px;
        }

        .section-header h2 {
            font-family: var(--font-heading);
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 12px;
        }

        .section-header p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 650px;
        }

        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: var(--transition-base);
        }

        .glass-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 30px rgba(0, 240, 255, 0.15);
            transform: translateY(-2px);
        }

        .coupon-hero {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 2px solid var(--accent-cyan);
            border-radius: var(--radius-lg);
            padding: 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.3);
            margin-bottom: 50px;
        }

        .coupon-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.1) 0%, transparent 70%);
            animation: pulse-ring 3s ease-in-out infinite;
        }

        @keyframes pulse-ring {
            0%,
            100% {
                transform: scale(1);
                opacity: 0.5;
            }

            50% {
                transform: scale(1.1);
                opacity: 0.8;
            }
        }

        .coupon-hero h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            position: relative;
            z-index: 2;
        }

        .coupon-hero p {
            font-size: 1.1rem;
            color: var(--text-silver);
            position: relative;
            z-index: 2;
            margin: 16px 0 24px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 14px 36px;
            border-radius: 12px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            display: inline-block;
            position: relative;
            z-index: 2;
        }

        .btn-primary:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
            transform: translateY(-2px);
            color: #08090F;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }

        .strategy-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-base);
            text-align: left;
        }

        .strategy-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 12px 35px rgba(0, 240, 255, 0.2);
            transform: translateY(-4px);
        }

        .strategy-card img {
            width: 100%;
            height: 200px;
            object-fit: cover;
            border-bottom: 1px solid var(--card-border);
        }

        .strategy-card-body {
            padding: 24px;
        }

        .strategy-card-body h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 10px;
        }

        .strategy-card-body p {
            font-size: 0.95rem;
            color: var(--text-silver);
            margin-bottom: 16px;
            line-height: 1.6;
        }

        .badge {
            display: inline-block;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            background: rgba(0, 82, 255, 0.2);
            color: var(--accent-cyan);
            border: 1px solid var(--accent-blue);
            margin-right: 8px;
            margin-bottom: 8px;
        }

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

        .feature-list li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            font-size: 0.95rem;
            color: var(--text-silver);
        }

        .feature-list li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            margin-top: 3px;
        }

        .steps-block {
            background: var(--bg-panel);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--card-border);
        }

        .step-item {
            display: flex;
            gap: 20px;
            margin-bottom: 32px;
            align-items: flex-start;
        }

        .step-number {
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            color: #08090F;
            flex-shrink: 0;
        }

        .step-text h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 6px;
        }

        .step-text p {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.6;
            margin: 0;
        }

        .faq-section {
            background: var(--bg-panel);
            border-radius: var(--radius-lg);
            padding: 40px;
            border: 1px solid var(--card-border);
        }

        .faq-item {
            border-bottom: 1px solid rgba(0, 82, 255, 0.2);
            padding: 18px 0;
            cursor: pointer;
            transition: var(--transition-base);
        }

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

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

        .faq-answer {
            font-size: 0.95rem;
            color: var(--text-silver);
            margin-top: 10px;
            display: none;
            line-height: 1.6;
        }

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

        .cta-section {
            text-align: center;
            padding: 90px 0;
            background: radial-gradient(ellipse at center, rgba(0, 82, 255, 0.12) 0%, transparent 65%),
                var(--bg-deep);
            border-top: 1px solid var(--card-border);
        }

        .cta-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-primary);
            margin-bottom: 14px;
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 600px;
            margin: 0 auto 28px;
        }

        .site-footer {
            background: var(--bg-panel);
            border-top: 1px solid var(--card-border);
            padding: 50px 0 30px;
            color: var(--text-silver);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 14px;
            font-size: 1.05rem;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(0, 82, 255, 0.2);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #64748B;
        }

        .left-fab {
            position: fixed;
            left: 20px;
            bottom: 80px;
            z-index: 50;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.7);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(8, 9, 15, 0.7), rgba(8, 9, 15, 0.7)), linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            transition: var(--transition-base);
            animation: float-fab 3s ease-in-out infinite;
        }

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

            50% {
                transform: translateY(-6px);
            }
        }

        .left-fab:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
            transform: scale(1.1);
        }

        @media (max-width: 1024px) {
            .header-inner {
                gap: 16px;
            }

            .main-nav {
                gap: 18px;
            }

            .main-nav a {
                font-size: 0.85rem;
            }

            .banner-content h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }

            .main-nav {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                flex-direction: column;
                gap: 0;
                display: none;
                border-bottom: 1px solid var(--card-border);
            }

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

            .main-nav a {
                padding: 14px 20px;
                border-bottom: 1px solid rgba(0, 82, 255, 0.15);
                font-size: 1rem;
            }

            .nav-buttons {
                gap: 8px;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

            .banner-content h1 {
                font-size: 1.8rem;
            }

            .section-padding {
                padding: 50px 0;
            }

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

            .steps-block,
            .faq-section {
                padding: 24px;
            }
        }

        @media (max-width: 520px) {
            .logo {
                font-size: 1rem;
                gap: 4px;
            }

            .btn-login,
            .btn-signup {
                padding: 5px 10px;
                font-size: 0.75rem;
            }

            .banner-content h1 {
                font-size: 1.5rem;
            }

            .coupon-hero {
                padding: 24px;
            }

            .coupon-hero h2 {
                font-size: 1.5rem;
            }

            .left-fab {
                width: 44px;
                height: 44px;
                left: 12px;
                bottom: 60px;
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
/* Shared Design System from Index - DO NOT MODIFY STRUCTURE */
        :root {
            --bg-deep: #08090F;
            --bg-panel: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.75);
            --card-border: rgba(0, 82, 255, 0.25);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 6px;
            --font-heading: 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --font-body: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            --transition-base: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

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

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

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

        a:hover {
            color: #66F0FF;
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .container {
            max-width: 1140px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 999;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 82, 255, 0.3);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.6);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
        }

        .logo {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            white-space: nowrap;
            display: flex;
            align-items: center;
            gap: 8px;
            transition: var(--transition-base);
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 6px var(--accent-cyan));
        }

        .logo:hover {
            color: var(--accent-cyan);
            text-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 28px;
        }

        .main-nav a {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            position: relative;
            padding: 6px 0;
            transition: var(--transition-base);
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0%;
            height: 2px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transition: width 0.3s ease;
            border-radius: 2px;
        }

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

        .main-nav a:hover,
        .main-nav a.active {
            color: var(--text-primary);
        }

        .nav-buttons {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 20px;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #08090F;
            padding: 9px 24px;
            border-radius: 8px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.5);
        }

        .btn-signup:hover {
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.8);
            transform: translateY(-1px);
        }

        .mobile-toggle {
            display: none;
            background: transparent;
            border: none;
            color: var(--text-primary);
            font-size: 1.8rem;
            cursor: pointer;
        }

        /* Inner Page Hero */
        .inner-hero {
            position: relative;
            padding: 130px 0 70px;
            background: radial-gradient(ellipse at 30% 50%, rgba(0, 82, 255, 0.12) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 30%, rgba(0, 240, 255, 0.05) 0%, transparent 55%),
                        var(--bg-deep);
            border-bottom: 1px solid var(--card-border);
            text-align: left;
        }

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

        .inner-hero h1 {
            font-family: var(--font-heading);
            font-size: 2.8rem;
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--text-primary);
            line-height: 1.2;
        }

        .inner-hero p {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 700px;
            line-height: 1.7;
        }

        /* Coupon Wall Section (D Layout Requirement) */
        .coupon-wall-section {
            padding: 70px 0;
            background: var(--bg-panel);
            border-bottom: 1px solid var(--card-border);
        }

        .coupon-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            grid-template-rows: auto auto;
            gap: 24px;
        }

        .coupon-main {
            grid-row: span 2;
            background: linear-gradient(145deg, #0A1128, #0F1A3A);
            border: 2px solid var(--accent-cyan);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
            transition: var(--transition-base);
            cursor: pointer;
        }

        .coupon-main::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: conic-gradient(from 0deg, transparent, rgba(0, 240, 255, 0.08), transparent);
            animation: rotateGlow 8s linear infinite;
        }

        @keyframes rotateGlow {
            to { transform: rotate(360deg); }
        }

        .coupon-main:hover {
            transform: translateY(-5px);
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.5);
        }

        .coupon-main .badge {
            background: var(--accent-cyan);
            color: #08090F;
            font-weight: 800;
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 20px;
            display: inline-block;
            width: fit-content;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .coupon-main h3 {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: 15px;
        }

        .coupon-main p {
            color: var(--text-silver);
            font-size: 1.1rem;
            margin-bottom: 25px;
            line-height: 1.6;
        }

        .coupon-main .btn-claim {
            background: linear-gradient(90deg, #0052FF, #00F0FF);
            border: none;
            color: #08090F;
            font-weight: 800;
            font-size: 1.1rem;
            padding: 14px 32px;
            border-radius: 50px;
            cursor: pointer;
            width: fit-content;
            transition: var(--transition-base);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .coupon-main .btn-claim:hover {
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
            transform: scale(1.03);
        }

        .coupon-secondary {
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 82, 255, 0.3);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            cursor: pointer;
            display: flex;
            flex-direction: column;
        }

        .coupon-secondary:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.25);
            transform: translateY(-3px);
        }

        .coupon-secondary h4 {
            font-weight: 700;
            font-size: 1.3rem;
            color: #fff;
            margin-bottom: 10px;
        }

        .coupon-secondary p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: 18px;
            flex-grow: 1;
        }

        .coupon-secondary .btn-grab {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--accent-cyan);
            padding: 10px 20px;
            border-radius: 6px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-base);
            text-align: center;
        }

        .coupon-secondary .btn-grab:hover {
            background: rgba(0, 82, 255, 0.2);
            border-color: var(--accent-cyan);
        }

        /* Advance Tips Sections */
        .strategy-block {
            padding: 80px 0;
            background: var(--bg-deep);
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
        }

        .strategy-text h2 {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 25px;
            color: #fff;
        }

        .strategy-text p {
            color: var(--text-silver);
            font-size: 1.05rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .strategy-text ul {
            list-style: none;
            padding: 0;
        }

        .strategy-text ul li {
            padding: 8px 0;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 1rem;
        }

        .strategy-text ul li i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        .strategy-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--card-border);
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.2);
        }

        .strategy-image img {
            width: 100%;
            height: auto;
            transition: transform 0.5s ease;
        }

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

        /* Glass Cards Section */
        .glass-cards-section {
            padding: 80px 0;
            background: var(--bg-panel);
        }

        .glass-cards-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .glass-card {
            background: rgba(13, 17, 30, 0.65);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-lg);
            padding: 35px 28px;
            transition: var(--transition-base);
            box-shadow: 0 0 12px rgba(0, 0, 0, 0.4);
        }

        .glass-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.3);
            transform: translateY(-6px);
        }

        .glass-card i {
            font-size: 2.4rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.4));
        }

        .glass-card h3 {
            font-weight: 700;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 14px;
        }

        .glass-card p {
            color: var(--text-silver);
            font-size: 0.98rem;
            line-height: 1.7;
        }

        /* FAQ Section */
        .faq-section {
            padding: 80px 0;
            background: var(--bg-deep);
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--card-border);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            padding: 22px 28px;
            cursor: pointer;
            transition: var(--transition-base);
        }

        .faq-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.2);
        }

        .faq-item h3 {
            font-weight: 700;
            font-size: 1.15rem;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-item h3 i {
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
        }

        .faq-item.expanded h3 i {
            transform: rotate(180deg);
        }

        .faq-item p {
            color: var(--text-silver);
            font-size: 0.98rem;
            line-height: 1.7;
            display: none;
            padding-top: 10px;
        }

        .faq-item.expanded p {
            display: block;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, #0A1128, #0F1A3A);
            text-align: center;
            border-top: 1px solid var(--accent-blue);
            border-bottom: 1px solid var(--accent-blue);
        }
        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 800;
            margin-bottom: 18px;
        }
        .cta-section p {
            color: var(--text-silver);
            font-size: 1.1rem;
            max-width: 600px;
            margin: 0 auto 30px;
        }
        .btn-cta-glow {
            background: var(--accent-cyan);
            border: none;
            color: #08090F;
            font-weight: 800;
            font-size: 1.2rem;
            padding: 16px 40px;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.5);
            transition: var(--transition-base);
        }
        .btn-cta-glow:hover {
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.9);
            transform: scale(1.04);
        }

        /* Footer */
        .site-footer {
            background: #05070D;
            border-top: 1px solid rgba(0, 82, 255, 0.4);
            padding: 50px 0 25px;
            color: var(--text-silver);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 35px;
        }
        .footer-col h4 {
            color: #fff;
            font-weight: 700;
            margin-bottom: 15px;
        }
        .footer-col a {
            display: block;
            color: var(--text-silver);
            margin-bottom: 8px;
            font-size: 0.95rem;
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding-top: 20px;
            text-align: center;
            font-size: 0.85rem;
            color: #8A8FA0;
        }

        /* FAB Left */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-image: linear-gradient(135deg, #0052FF, #00F0FF) 1;
            border-radius: 50px;
            width: 52px;
            height: 52px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            cursor: pointer;
            transition: var(--transition-base);
            opacity: 0.75;
        }
        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .coupon-grid {
                grid-template-columns: 1fr 1fr;
            }
            .coupon-main {
                grid-column: span 2;
                grid-row: span 1;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
                gap: 35px;
            }
            .glass-cards-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                flex-wrap: wrap;
            }
            .main-nav {
                display: none;
                width: 100%;
                flex-direction: column;
                background: #0A0F1C;
                padding: 20px;
                border-radius: 2px;
                margin-top: 10px;
            }
            .main-nav.mobile-open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .inner-hero h1 {
                font-size: 2rem;
            }
            .coupon-grid {
                grid-template-columns: 1fr;
            }
            .coupon-main {
                grid-column: span 1;
            }
            .glass-cards-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }