/* roulang page: index */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --sharp-radius: 0px;
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        h1, h2, h3, h4 {
            font-family: var(--font-heading);
            color: var(--text-white);
            font-weight: 700;
            line-height: 1.3;
        }

        a {
            color: var(--accent-cyan);
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-blue);
        }

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

        /* header & nav */
        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
        }

        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }

        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }

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

        @media (max-width: 1024px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
        }

        /* Hero coupon wall */
        .hero-section {
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 140px 0 100px;
            margin-top: 0;
            display: flex;
            align-items: center;
            min-height: 85vh;
        }
        .hero-overlay {
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: linear-gradient(135deg, rgba(8,9,15,0.85) 0%, rgba(13,17,30,0.7) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .hero-text {
            flex: 1;
        }
        .hero-text h1 {
            font-size: 3.2rem;
            margin-bottom: 18px;
            color: white;
            text-shadow: 0 0 18px rgba(0,240,255,0.6);
        }
        .hero-text p {
            font-size: 1.2rem;
            color: var(--text-silver);
            margin-bottom: 32px;
            max-width: 700px;
        }
        .coupon-wall {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        .main-coupon {
            background: var(--gradient-coupon);
            padding: 36px;
            border-radius: 12px;
            text-align: left;
            box-shadow: 0 10px 35px rgba(0,82,255,0.5);
        }
        .main-coupon h2 {
            font-size: 2.4rem;
            color: white;
            margin-bottom: 10px;
        }
        .main-coupon p {
            color: rgba(255,255,255,0.85);
            margin-bottom: 20px;
        }
        .btn-coupon {
            background: white;
            color: #0052FF;
            border: none;
            padding: 14px 30px;
            font-weight: 700;
            border-radius: 8px;
            transition: 0.2s;
        }
        .btn-coupon:hover {
            background: #CBD5E1;
        }
        .sub-coupons {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
        }
        .mini-coupon {
            background: rgba(255,255,255,0.1);
            backdrop-filter: blur(10px);
            padding: 18px;
            border-radius: 8px;
            border: 1px solid var(--accent-cyan);
            color: white;
        }

        /* sections general */
        .section {
            padding: 70px 0;
        }
        .section-dark {
            background: var(--secondary-bg);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* benefits */
        .benefit-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }
        .benefit-card {
            background: var(--card-bg);
            padding: 28px;
            border-radius: 8px;
            border-left: 4px solid var(--accent-blue);
        }

        /* stat bar */
        .stats-bar {
            display: flex;
            justify-content: space-around;
            background: var(--secondary-bg);
            padding: 40px 0;
        }
        .stat-item h3 {
            font-size: 2.5rem;
            color: var(--accent-cyan);
        }

        /* lead form */
        .lead-form-box {
            background: linear-gradient(145deg, #0D111E, #08090F);
            padding: 40px;
            border: 1px solid var(--accent-blue);
            border-radius: 12px;
        }
        .lead-form-box input {
            background: rgba(255,255,255,0.05);
            border: 1px solid var(--border-color);
            color: white;
            margin-bottom: 15px;
        }
        .btn-submit {
            background: var(--accent-blue);
            color: white;
            font-weight: 700;
            width: 100%;
        }

        /* news list */
        .news-list {
            list-style: none;
        }
        .news-list li {
            border-bottom: 1px solid rgba(255,255,255,0.1);
            padding: 14px 0;
        }

        /* privacy */
        .privacy-badges {
            display: flex;
            gap: 25px;
            flex-wrap: wrap;
        }

        /* fab */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 24px;
            z-index: 50;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(10px);
            border-radius: 50px;
            padding: 14px 22px;
            border: 2px solid #00F0FF;
            box-shadow: 0 0 22px rgba(0,240,255,0.6);
            color: white;
            font-weight: bold;
            display: flex;
            align-items: center;
            gap: 10px;
            transition: 0.2s;
        }
        .fab-left:hover {
            background: #00F0FF;
            color: black;
        }

        footer {
            background: #08090F;
            border-top: 2px solid var(--accent-blue);
            padding: 30px 0;
        }

        @media (max-width: 768px) {
            .hero-text h1 { font-size: 2.2rem; }
            .benefit-grid { grid-template-columns: 1fr; }
            .stats-bar { flex-direction: column; gap: 30px; }
        }

/* roulang page: article */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }
        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-cyan);
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-blue);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
        }
        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }
        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .article-page {
            padding-top: 120px;
            min-height: 70vh;
        }
        .article-header {
            background: var(--secondary-bg);
            border-bottom: 2px solid var(--border-color);
            padding: 60px 0 40px;
            margin-bottom: 50px;
            position: relative;
            overflow: hidden;
        }
        .article-header::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at 20% 30%, rgba(0, 82, 255, 0.15) 0%, transparent 70%);
            z-index: 0;
        }
        .article-header .container {
            position: relative;
            z-index: 1;
        }
        .article-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }
        .article-category {
            background: var(--accent-blue);
            color: white;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .article-date {
            color: var(--text-silver);
            font-size: 0.9rem;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-date i {
            color: var(--accent-cyan);
        }
        .article-header h1 {
            font-size: 2.8rem;
            color: var(--text-white);
            font-weight: 800;
            line-height: 1.3;
            margin: 0 0 15px;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }
        .article-featured-image {
            margin: 30px 0 0;
            border-radius: 8px;
            overflow: hidden;
            border: 1px solid var(--border-color);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
        }
        .article-featured-image img {
            width: 100%;
            display: block;
            object-fit: cover;
            max-height: 450px;
        }
        .article-body {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 50px;
            padding: 0 0 80px;
        }
        @media (max-width: 900px) {
            .article-body {
                grid-template-columns: 1fr;
            }
        }
        .article-content {
            background: var(--secondary-bg);
            padding: 40px;
            border-radius: 8px;
            border: 1px solid var(--border-color);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
        }
        .article-content h2 {
            color: var(--accent-cyan);
            font-size: 1.8rem;
            margin-top: 35px;
            margin-bottom: 15px;
            font-weight: 700;
            border-left: 4px solid var(--accent-blue);
            padding-left: 18px;
        }
        .article-content h3 {
            color: var(--text-white);
            font-size: 1.4rem;
            margin-top: 25px;
            margin-bottom: 12px;
            font-weight: 600;
        }
        .article-content p {
            font-size: 1.05rem;
            line-height: 1.75;
            margin-bottom: 18px;
            color: var(--text-silver);
        }
        .article-content ul, .article-content ol {
            margin-bottom: 20px;
            padding-left: 25px;
        }
        .article-content li {
            margin-bottom: 10px;
            line-height: 1.7;
        }
        .article-content strong {
            color: var(--text-white);
        }
        .article-content blockquote {
            background: rgba(0, 82, 255, 0.08);
            border-left: 5px solid var(--accent-blue);
            padding: 20px 25px;
            margin: 25px 0;
            border-radius: 0 8px 8px 0;
            font-style: italic;
            color: var(--text-silver);
        }
        .article-content img {
            border-radius: 6px;
            margin: 20px 0;
            border: 1px solid rgba(255,255,255,0.05);
        }
        .article-sidebar {
            position: sticky;
            top: 110px;
            align-self: start;
        }
        .sidebar-card {
            background: var(--secondary-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 25px;
            margin-bottom: 25px;
            box-shadow: 0 4px 15px rgba(0,0,0,0.2);
        }
        .sidebar-card h4 {
            color: var(--accent-cyan);
            font-size: 1.2rem;
            margin-bottom: 18px;
            font-weight: 700;
            border-bottom: 2px solid var(--border-color);
            padding-bottom: 12px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }
        .sidebar-card ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-card li {
            margin-bottom: 14px;
            display: flex;
            align-items: flex-start;
            gap: 10px;
        }
        .sidebar-card li i {
            color: var(--accent-cyan);
            margin-top: 4px;
            font-size: 0.9rem;
        }
        .sidebar-card li a {
            color: var(--text-silver);
            text-decoration: none;
            font-size: 0.95rem;
            transition: color 0.2s;
        }
        .sidebar-card li a:hover {
            color: var(--accent-cyan);
        }
        .not-found-message {
            text-align: center;
            padding: 80px 20px;
            color: var(--text-silver);
        }
        .not-found-message h2 {
            color: var(--accent-cyan);
            font-size: 2rem;
            margin-bottom: 15px;
        }
        .not-found-message a {
            display: inline-block;
            margin-top: 20px;
            background: var(--accent-blue);
            color: white;
            padding: 12px 30px;
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            transition: background 0.2s, box-shadow 0.2s;
        }
        .not-found-message a:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }
        footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 30px 0;
            margin-top: 50px;
            color: var(--text-silver);
            font-size: 0.9rem;
        }
        footer .container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }
        footer a {
            color: var(--text-silver);
            text-decoration: none;
            margin: 0 8px;
            transition: color 0.2s;
        }
        footer a:hover {
            color: var(--accent-cyan);
        }
        @media (max-width: 768px) {
            .article-header h1 {
                font-size: 2rem;
            }
            .article-content {
                padding: 20px;
            }
            footer .container {
                flex-direction: column;
                text-align: center;
            }
        }
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 40px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all 0.3s;
            color: var(--accent-cyan);
            font-size: 1.6rem;
            animation: floatGlow 2.5s infinite ease-in-out;
        }
        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 40px;
            padding: 2px;
            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 30px rgba(0, 240, 255, 0.85);
        }
        @keyframes floatGlow {
            0%, 100% { opacity: 0.7; transform: translateY(0); }
            50% { opacity: 1; transform: translateY(-6px); }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --sharp-radius: 0px;
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-blue);
        }

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

        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .logo a {
            color: inherit;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
        }

        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: var(--soft-radius);
            transition: all 0.2s;
            font-size: 0.9rem;
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }

        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: var(--soft-radius);
            transition: all 0.2s;
            font-size: 0.9rem;
        }

        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }

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

        .page-banner {
            background: var(--secondary-bg);
            padding: 120px 0 60px;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.15;
            z-index: 1;
        }

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

        .page-banner h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.2;
        }

        .page-banner .subtitle {
            font-size: 1.2rem;
            color: var(--text-silver);
            max-width: 800px;
            margin-bottom: 12px;
        }

        .rating-stars {
            color: #FFD700;
            font-size: 1.2rem;
            margin-bottom: 20px;
        }

        .section {
            padding: 70px 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            margin-top: 8px;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.5);
        }

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

        .intro-text {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .review-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 32px;
            margin-bottom: 32px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .review-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-2px);
        }

        .review-card .rank-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--gradient-coupon);
            color: white;
            font-weight: 700;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 0.9rem;
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .review-header img {
            width: 80px;
            height: 80px;
            border-radius: 12px;
            object-fit: cover;
            border: 2px solid var(--border-color);
        }

        .review-header h3 {
            font-size: 1.5rem;
            color: var(--text-white);
            margin: 0;
        }

        .review-metrics {
            display: flex;
            gap: 30px;
            flex-wrap: wrap;
            margin: 20px 0;
            padding: 16px;
            background: rgba(0, 82, 255, 0.05);
            border-radius: 6px;
            border-left: 3px solid var(--accent-blue);
        }

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

        .metric-value {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--accent-cyan);
        }

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

        .pros-cons-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin: 20px 0;
        }

        .pros-box,
        .cons-box {
            padding: 16px;
            border-radius: 6px;
        }

        .pros-box {
            background: rgba(0, 255, 100, 0.05);
            border: 1px solid rgba(0, 255, 100, 0.2);
        }

        .cons-box {
            background: rgba(255, 0, 100, 0.05);
            border: 1px solid rgba(255, 0, 100, 0.2);
        }

        .pros-box h4,
        .cons-box h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 10px;
        }

        .pros-box h4 {
            color: #00ff64;
        }

        .cons-box h4 {
            color: #ff0064;
        }

        .pros-box ul,
        .cons-box ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .pros-box li,
        .cons-box li {
            padding: 4px 0;
            font-size: 0.95rem;
        }

        .pros-box li::before {
            content: '✓ ';
            color: #00ff64;
            font-weight: 700;
        }

        .cons-box li::before {
            content: '✗ ';
            color: #ff0064;
            font-weight: 700;
        }

        .btn-visit {
            display: inline-block;
            background: var(--accent-blue);
            color: white;
            padding: 12px 32px;
            font-weight: 600;
            text-decoration: none;
            border-radius: var(--soft-radius);
            transition: all 0.2s;
            margin-top: 12px;
        }

        .btn-visit:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
            color: white;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            margin: 30px 0;
            background: var(--card-bg);
            border-radius: 8px;
            overflow: hidden;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 14px 16px;
            text-align: left;
            border-bottom: 1px solid var(--border-color);
            color: var(--text-silver);
        }

        .comparison-table th {
            background: var(--secondary-bg);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .comparison-table tr:hover td {
            background: rgba(0, 240, 255, 0.03);
        }

        .faq-block {
            margin-top: 40px;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 6px;
            margin-bottom: 12px;
            padding: 20px;
            transition: all 0.2s;
        }

        .faq-item h4 {
            color: var(--text-white);
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 8px;
        }

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

        .cta-section {
            background: var(--gradient-coupon);
            padding: 60px 0;
            text-align: left;
            border-radius: 0;
            margin: 0;
        }

        .cta-content h2 {
            font-size: 2rem;
            color: white;
            margin-bottom: 12px;
        }

        .cta-content p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.1rem;
            margin-bottom: 24px;
        }

        .btn-cta-large {
            display: inline-block;
            background: white;
            color: var(--accent-blue);
            padding: 14px 40px;
            font-size: 1.1rem;
            font-weight: 700;
            text-decoration: none;
            border-radius: 6px;
            transition: all 0.2s;
        }

        .btn-cta-large:hover {
            box-shadow: 0 4px 25px rgba(255, 255, 255, 0.4);
            color: #0039b3;
        }

        footer {
            background: var(--secondary-bg);
            padding: 32px 0;
            border-top: 1px solid var(--border-color);
            margin-top: 0;
        }

        footer .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            align-items: center;
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        footer a {
            color: var(--text-silver);
            text-decoration: none;
        }

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

        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-cyan);
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            transition: all 0.2s;
            animation: pulse-glow 2s infinite;
        }

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

        @keyframes pulse-glow {
            0%,
            100% {
                box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            }
            50% {
                box-shadow: 0 0 25px rgba(0, 240, 255, 0.8);
            }
        }

        @media (max-width: 1024px) {
            .pros-cons-grid {
                grid-template-columns: 1fr;
            }
            .nav-links {
                gap: 18px;
            }
            .page-banner h1 {
                font-size: 2.2rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 16px;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
            .page-banner h1 {
                font-size: 1.8rem;
            }
            .review-metrics {
                flex-direction: column;
                gap: 14px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .review-card {
                padding: 20px;
            }
            footer .container {
                flex-direction: column;
                gap: 12px;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-container {
                padding: 0 16px;
            }
            .logo {
                font-size: 1.3rem;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .page-banner {
                padding: 110px 0 40px;
            }
            .page-banner h1 {
                font-size: 1.5rem;
            }
            .comparison-table {
                font-size: 0.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }
        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }
        a {
            color: var(--accent-cyan);
            transition: color 0.2s;
        }
        a:hover {
            color: var(--accent-blue);
        }
        img {
            max-width: 100%;
            height: auto;
        }
        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }
        .logo a {
            color: inherit;
            text-decoration: none;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
        }
        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }
        .nav-auth-btns {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }
        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
        }
        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
        }
        @media (max-width: 1024px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
        }
        @media (max-width: 768px) {
            .nav-auth-btns {
                gap: 8px;
            }
            .btn-login, .btn-signup {
                padding: 8px 16px;
                font-size: 0.9rem;
            }
        }
        .banner-section {
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 140px 0 80px;
            margin-top: 0;
            min-height: 60vh;
            display: flex;
            align-items: center;
        }
        .banner-overlay {
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: linear-gradient(135deg, rgba(8,9,15,0.9) 0%, rgba(13,17,30,0.75) 100%);
        }
        .banner-content {
            position: relative;
            z-index: 2;
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
        }
        .banner-text {
            flex: 1;
        }
        .banner-text h1 {
            font-size: 2.8rem;
            margin-bottom: 18px;
            color: white;
            text-shadow: 0 0 18px rgba(0,240,255,0.6);
            font-weight: 800;
        }
        .banner-text p {
            font-size: 1.2rem;
            color: var(--text-silver);
            margin-bottom: 32px;
            max-width: 700px;
            line-height: 1.7;
        }
        .banner-visual {
            flex: 0 0 380px;
            background: var(--gradient-coupon);
            padding: 36px;
            border-radius: 12px;
            text-align: left;
            box-shadow: 0 10px 35px rgba(0,82,255,0.5);
        }
        .banner-visual h2 {
            font-size: 2.2rem;
            color: white;
            margin-bottom: 12px;
        }
        .banner-visual p {
            color: rgba(255,255,255,0.85);
            margin-bottom: 24px;
        }
        .btn-coupon {
            background: white;
            color: var(--accent-blue);
            padding: 14px 32px;
            font-weight: 700;
            text-decoration: none;
            border-radius: 4px;
            display: inline-block;
            transition: all 0.2s;
            font-size: 1.1rem;
        }
        .btn-coupon:hover {
            background: var(--accent-cyan);
            color: #08090F;
            box-shadow: 0 0 25px rgba(0,240,255,0.7);
        }
        @media (max-width: 768px) {
            .banner-section {
                min-height: auto;
                padding: 120px 0 60px;
            }
            .banner-text h1 {
                font-size: 2rem;
            }
            .banner-visual {
                flex: 1 1 100%;
            }
            .banner-content {
                flex-direction: column;
            }
        }
        .section {
            padding: 70px 0;
        }
        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: white;
            margin-bottom: 12px;
        }
        .section-sub {
            color: var(--text-silver);
            margin-bottom: 48px;
            font-size: 1.1rem;
            max-width: 700px;
        }
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
            gap: 28px;
        }
        .promo-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 28px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }
        .promo-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }
        .promo-tag {
            background: var(--accent-blue);
            color: white;
            padding: 6px 16px;
            font-size: 0.85rem;
            font-weight: 600;
            border-radius: 20px;
            display: inline-block;
            margin-bottom: 16px;
        }
        .promo-card h3 {
            font-size: 1.5rem;
            color: white;
            margin-bottom: 12px;
        }
        .promo-card p {
            color: var(--text-silver);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .promo-value {
            font-size: 2rem;
            font-weight: 800;
            background: var(--gradient-coupon);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 16px;
        }
        .btn-promo {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 24px;
            font-weight: 600;
            text-decoration: none;
            border-radius: 4px;
            display: inline-block;
            transition: all 0.2s;
        }
        .btn-promo:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }
        .steps-container {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 40px;
        }
        .step-item {
            flex: 1 1 250px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 24px;
            text-align: left;
        }
        .step-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }
        .step-item h4 {
            color: white;
            font-size: 1.2rem;
            margin-bottom: 8px;
        }
        .faq-list {
            max-width: 900px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 20px 0;
        }
        .faq-question {
            font-weight: 700;
            font-size: 1.2rem;
            color: white;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin: 0;
        }
        .faq-answer {
            color: var(--text-silver);
            margin-top: 12px;
            line-height: 1.7;
            display: none;
        }
        .faq-answer.show {
            display: block;
        }
        .faq-icon {
            color: var(--accent-cyan);
            font-size: 1.3rem;
            transition: transform 0.2s;
        }
        .cta-section {
            background: var(--secondary-bg);
            padding: 70px 0;
            text-align: center;
            border-top: 2px solid var(--border-color);
        }
        .cta-section h2 {
            color: white;
            font-size: 2.2rem;
            margin-bottom: 18px;
        }
        .cta-section p {
            color: var(--text-silver);
            margin-bottom: 32px;
            font-size: 1.15rem;
            max-width: 700px;
            margin-left: auto;
            margin-right: auto;
        }
        .btn-cta {
            background: var(--accent-blue);
            color: white;
            padding: 16px 40px;
            font-weight: 700;
            font-size: 1.2rem;
            text-decoration: none;
            border-radius: 4px;
            display: inline-block;
            transition: all 0.2s;
        }
        .btn-cta:hover {
            background: #0039b3;
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.6);
            color: white;
        }
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(10px);
            border-radius: 50px;
            border: 2px solid;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00F0FF;
            font-size: 1.5rem;
            box-shadow: 0 0 18px rgba(0,240,255,0.5);
            transition: all 0.3s;
            animation: float 3s ease-in-out infinite;
        }
        .fab-left:hover {
            box-shadow: 0 0 30px rgba(0,240,255,0.8);
            transform: scale(1.08);
        }
        @keyframes float {
            0% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
            100% { transform: translateY(0); }
        }
        footer {
            background: var(--secondary-bg);
            padding: 28px 0;
            color: var(--text-silver);
            border-top: 1px solid var(--border-color);
            text-align: center;
        }
        footer a {
            color: var(--text-silver);
            text-decoration: none;
            margin: 0 12px;
        }
        footer a:hover {
            color: var(--accent-cyan);
        }
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        @media (max-width: 520px) {
            .section-title {
                font-size: 1.7rem;
            }
            .promo-value {
                font-size: 1.6rem;
            }
        }
        .highlight-box {
            background: rgba(0,82,255,0.12);
            border-left: 4px solid var(--accent-blue);
            padding: 18px 24px;
            border-radius: 0 8px 8px 0;
            margin: 24px 0;
        }
        .highlight-box p {
            margin: 0;
            color: var(--text-silver);
        }

/* roulang page: category2 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --sharp-radius: 0px;
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: color 0.2s, text-shadow 0.2s;
        }

        a:hover {
            color: var(--accent-blue);
            text-shadow: 0 0 8px rgba(0, 82, 255, 0.4);
        }

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

        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header */
        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .logo a {
            color: inherit;
            text-decoration: none;
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: var(--soft-radius);
            transition: all 0.2s;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }

        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: var(--soft-radius);
            transition: all 0.2s;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }

        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.8rem;
            cursor: pointer;
            padding: 4px 8px;
        }

        @media (max-width: 1024px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
                gap: 16px;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
        }

        /* Page Banner */
        .page-banner {
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            position: relative;
            padding: 120px 0 70px;
            margin-top: 0;
        }

        .banner-overlay {
            position: absolute;
            top: 0; left: 0;
            width: 100%; height: 100%;
            background: linear-gradient(135deg, rgba(8,9,15,0.88) 0%, rgba(13,17,30,0.75) 100%);
        }

        .banner-content {
            position: relative;
            z-index: 2;
            max-width: 800px;
        }

        .banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            color: white;
            margin-bottom: 16px;
            text-shadow: 0 0 18px rgba(0,240,255,0.4);
            line-height: 1.3;
        }

        .banner-content p {
            font-size: 1.15rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Info Grid Section */
        .info-grid-section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: white;
            margin-bottom: 16px;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-silver);
            margin-bottom: 48px;
            max-width: 750px;
            line-height: 1.7;
        }

        .info-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 24px;
        }

        .info-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 32px 24px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .info-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: var(--gradient-coupon);
            border-radius: 0 4px 4px 0;
        }

        .info-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 25px rgba(0, 240, 255, 0.15);
            transform: translateY(-4px);
        }

        .info-card .card-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            display: block;
        }

        .info-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: white;
            margin-bottom: 10px;
        }

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

        /* Strategies Section */
        .strategies-section {
            padding: 80px 0;
            background: var(--secondary-bg);
        }

        .strategy-block {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
            margin-bottom: 60px;
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            padding: 40px;
            transition: border-color 0.3s;
        }

        .strategy-block:last-child {
            margin-bottom: 0;
        }

        .strategy-block:hover {
            border-color: var(--accent-cyan);
        }

        .strategy-image {
            flex: 1;
            min-width: 280px;
        }

        .strategy-image img {
            border-radius: 8px;
            width: 100%;
            object-fit: cover;
            aspect-ratio: 16 / 10;
            border: 1px solid var(--border-color);
        }

        .strategy-text {
            flex: 1.2;
            min-width: 280px;
        }

        .strategy-text h3 {
            font-size: 1.6rem;
            font-weight: 700;
            color: white;
            margin-bottom: 12px;
        }

        .strategy-text p {
            font-size: 1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .strategy-tag {
            display: inline-block;
            background: rgba(0, 82, 255, 0.2);
            color: var(--accent-cyan);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 8px;
            margin-bottom: 8px;
        }

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

        .strategy-list li {
            padding: 8px 0;
            padding-left: 24px;
            position: relative;
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        .strategy-list li::before {
            content: '\f00c';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            color: var(--accent-cyan);
            position: absolute;
            left: 0;
            top: 8px;
            font-size: 0.85rem;
        }

        /* Tips Banner */
        .tips-banner {
            background: var(--gradient-coupon);
            padding: 50px 40px;
            border-radius: 12px;
            margin: 60px 0;
            text-align: left;
        }

        .tips-banner-inner {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            align-items: center;
            justify-content: space-between;
        }

        .tips-banner-text h3 {
            font-size: 1.8rem;
            color: white;
            margin-bottom: 12px;
            font-weight: 700;
        }

        .tips-banner-text p {
            color: rgba(255,255,255,0.85);
            margin: 0;
            font-size: 1.05rem;
            line-height: 1.6;
        }

        .btn-primary-cta {
            background: white;
            color: #0052FF;
            padding: 14px 32px;
            font-weight: 700;
            border-radius: 8px;
            border: none;
            cursor: pointer;
            font-size: 1.05rem;
            transition: all 0.3s;
            white-space: nowrap;
            display: inline-block;
            text-align: center;
        }

        .btn-primary-cta:hover {
            background: #e0f0ff;
            box-shadow: 0 8px 25px rgba(255,255,255,0.3);
            color: #0039b3;
            text-shadow: none;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 24px 0;
            cursor: pointer;
            transition: all 0.2s;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-color);
        }

        .faq-question {
            font-size: 1.15rem;
            font-weight: 700;
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: color 0.2s;
        }

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding-top 0.4s;
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            padding-right: 30px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

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

        /* Footer */
        footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 40px 0;
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        footer .footer-container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 24px;
            align-items: center;
        }

        footer a {
            color: var(--text-silver);
            transition: color 0.2s;
            margin: 0 8px;
        }

        footer a:hover {
            color: var(--accent-cyan);
            text-shadow: none;
        }

        /* FAB */
        .floating-fab {
            position: fixed;
            left: 24px;
            bottom: 24px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4), 0 4px 15px rgba(0,0,0,0.5);
            transition: all 0.3s;
            animation: fabPulse 2.5s infinite;
        }

        .floating-fab::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #0052FF, #00F0FF);
            -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;
        }

        .floating-fab i {
            font-size: 1.6rem;
            color: #00F0FF;
            position: relative;
            z-index: 2;
            text-shadow: 0 0 8px rgba(0,240,255,0.8);
        }

        .floating-fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7), 0 6px 20px rgba(0,0,0,0.6);
        }

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

        @keyframes fabPulse {
            0%, 100% { opacity: 0.8; }
            50% { opacity: 1; }
        }

        /* Responsive */
        @media (max-width: 768px) {
            .banner-content h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .strategy-block {
                padding: 24px;
                flex-direction: column;
            }
            .tips-banner {
                padding: 30px 24px;
            }
            .tips-banner-inner {
                flex-direction: column;
                text-align: center;
            }
            .tips-banner-text {
                text-align: center;
            }
            .info-grid {
                grid-template-columns: 1fr;
            }
            .page-banner {
                padding: 110px 0 50px;
            }
        }

        @media (max-width: 520px) {
            .nav-container {
                padding: 0 16px;
            }
            .btn-login, .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .banner-content h1 {
                font-size: 1.7rem;
            }
            .floating-fab {
                width: 48px;
                height: 48px;
                left: 16px;
                bottom: 16px;
            }
            .floating-fab i {
                font-size: 1.3rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary-bg: #08090F;
            --secondary-bg: #0D111E;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #CBD5E1;
            --border-color: rgba(0, 82, 255, 0.3);
            --card-bg: rgba(13, 17, 30, 0.8);
            --gradient-coupon: linear-gradient(135deg, #0052FF 0%, #00F0FF 100%);
            --neon-glow: 0 0 15px rgba(0, 240, 255, 0.5);
            --sharp-radius: 0px;
            --soft-radius: 4px;
            --font-heading: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
            --font-body: 'Inter', 'Segoe UI', -apple-system, BlinkMacSystemFont, sans-serif;
        }

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

        body {
            background-color: var(--primary-bg);
            color: var(--text-silver);
            font-family: var(--font-body);
            line-height: 1.6;
            margin: 0;
            padding: 0;
            -webkit-font-smoothing: antialiased;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--accent-blue);
        }

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

        .container {
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        /* Header & Nav */
        .main-header {
            background: rgba(8, 9, 15, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 100;
            padding: 18px 0;
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1300px;
            margin: 0 auto;
            padding: 0 24px;
        }

        .logo {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.5px;
            background: linear-gradient(135deg, #FFFFFF 0%, #00F0FF 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
        }

        .logo a {
            color: inherit;
            text-decoration: none;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
        }

        .nav-links a {
            color: var(--text-silver);
            text-decoration: none;
            font-weight: 500;
            font-size: 1rem;
            transition: color 0.2s, text-shadow 0.2s;
            position: relative;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--accent-cyan);
            text-shadow: 0 0 8px rgba(0, 240, 255, 0.5);
        }

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

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
            font-family: var(--font-body);
            font-size: 0.95rem;
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: var(--neon-glow);
        }

        .btn-signup {
            background: var(--accent-blue);
            border: none;
            color: white;
            padding: 10px 22px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
            font-family: var(--font-body);
            font-size: 0.95rem;
        }

        .btn-signup:hover {
            background: #0039b3;
            box-shadow: 0 0 20px rgba(0, 82, 255, 0.6);
        }

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

        /* Hero Banner */
        .page-hero {
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            position: relative;
            padding: 160px 0 100px;
            margin-top: 0;
            min-height: 50vh;
            display: flex;
            align-items: center;
        }

        .page-hero-overlay {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.9) 0%, rgba(13, 17, 30, 0.75) 100%);
        }

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

        .page-hero-content h1 {
            font-size: 3rem;
            margin-bottom: 18px;
            color: white;
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.6);
            font-family: var(--font-heading);
            font-weight: 800;
        }

        .page-hero-content p {
            font-size: 1.25rem;
            color: var(--text-silver);
            margin-bottom: 32px;
            max-width: 750px;
        }

        /* Promotion Cards Grid */
        .promo-grid-section {
            padding: 80px 0;
        }

        .section-title {
            font-size: 2.4rem;
            color: var(--text-white);
            margin-bottom: 48px;
            font-weight: 700;
            text-align: left;
            font-family: var(--font-heading);
        }

        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
            gap: 32px;
        }

        .promo-card {
            background: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .promo-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.25);
            transform: translateY(-4px);
        }

        .promo-card-image {
            width: 100%;
            height: 220px;
            object-fit: cover;
        }

        .promo-card-body {
            padding: 28px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .promo-tag {
            display: inline-block;
            background: var(--accent-blue);
            color: white;
            padding: 4px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            margin-bottom: 16px;
            align-self: flex-start;
        }

        .promo-tag.hot {
            background: #FF4500;
        }

        .promo-tag.new {
            background: #32CD32;
        }

        .promo-card-body h3 {
            color: var(--text-white);
            font-size: 1.5rem;
            margin-bottom: 12px;
            font-weight: 700;
            font-family: var(--font-heading);
        }

        .promo-card-body p {
            color: var(--text-silver);
            margin-bottom: 20px;
            line-height: 1.6;
            flex: 1;
        }

        .promo-amount {
            font-size: 1.8rem;
            color: var(--accent-cyan);
            font-weight: 800;
            margin-bottom: 16px;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
        }

        .btn-promo-detail {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--accent-blue);
            padding: 12px 24px;
            font-weight: 600;
            cursor: pointer;
            border-radius: 4px;
            transition: all 0.2s;
            font-family: var(--font-body);
            text-align: center;
            display: inline-block;
            width: fit-content;
        }

        .btn-promo-detail:hover {
            background: var(--accent-blue);
            color: white;
            box-shadow: 0 0 18px rgba(0, 82, 255, 0.6);
        }

        /* How to Claim */
        .how-to-section {
            background: var(--secondary-bg);
            padding: 80px 0;
        }

        .steps-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 36px;
            margin-top: 48px;
            list-style: none;
            padding: 0;
        }

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

        .step-number {
            background: var(--accent-blue);
            color: white;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.4rem;
            flex-shrink: 0;
            box-shadow: 0 0 16px rgba(0, 82, 255, 0.5);
        }

        .step-text h4 {
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 8px;
            font-weight: 700;
            font-family: var(--font-heading);
        }

        .step-text p {
            color: var(--text-silver);
            margin: 0;
        }

        /* VIP Table */
        .vip-section {
            padding: 80px 0;
        }

        .vip-table-wrapper {
            overflow-x: auto;
            margin-top: 48px;
        }

        .vip-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border: 1px solid var(--border-color);
            border-radius: 8px;
            overflow: hidden;
        }

        .vip-table th {
            background: var(--secondary-bg);
            color: var(--accent-cyan);
            padding: 18px 20px;
            font-weight: 700;
            text-align: left;
            font-size: 1rem;
            border-bottom: 2px solid var(--accent-blue);
        }

        .vip-table td {
            padding: 16px 20px;
            border-bottom: 1px solid rgba(0, 82, 255, 0.15);
            color: var(--text-silver);
        }

        .vip-table tr:last-child td {
            border-bottom: none;
        }

        .vip-table .vip-badge {
            color: #FFD700;
            font-weight: 700;
        }

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

        .faq-list {
            margin-top: 48px;
        }

        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 24px 0;
            cursor: pointer;
            transition: all 0.2s;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border-color);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.15rem;
            font-family: var(--font-heading);
        }

        .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 0.4s ease;
            color: var(--text-silver);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

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

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            text-align: left;
        }

        .cta-box {
            background: var(--gradient-coupon);
            padding: 60px 48px;
            border-radius: 12px;
            box-shadow: 0 12px 40px rgba(0, 82, 255, 0.5);
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            align-items: center;
            justify-content: space-between;
        }

        .cta-box-text h2 {
            color: white;
            font-size: 2.4rem;
            margin-bottom: 12px;
            font-family: var(--font-heading);
            font-weight: 800;
        }

        .cta-box-text p {
            color: rgba(255, 255, 255, 0.9);
            font-size: 1.15rem;
            margin: 0;
        }

        .btn-cta-large {
            background: white;
            color: var(--accent-blue);
            padding: 16px 40px;
            font-weight: 700;
            font-size: 1.15rem;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.25s;
            font-family: var(--font-body);
            white-space: nowrap;
        }

        .btn-cta-large:hover {
            background: #e0e0e0;
            box-shadow: 0 0 28px rgba(255, 255, 255, 0.5);
            transform: scale(1.03);
        }

        /* Footer */
        footer {
            background: var(--secondary-bg);
            border-top: 1px solid var(--border-color);
            padding: 36px 0;
            color: var(--text-silver);
        }

        footer .container {
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
        }

        footer a {
            color: var(--text-silver);
            text-decoration: none;
            margin: 0 8px;
            transition: color 0.2s;
        }

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

        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 50;
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #0052FF, #00F0FF) 1;
            border-radius: 8px;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.3s;
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.5);
            color: var(--accent-cyan);
            font-size: 1.6rem;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.8);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .nav-links {
                gap: 20px;
            }
            .logo {
                font-size: 1.5rem;
            }
            .page-hero-content h1 {
                font-size: 2.4rem;
            }
            .promo-grid {
                grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(8, 9, 15, 0.98);
                padding: 24px;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-auth-btns {
                margin-left: auto;
                margin-right: 20px;
            }
            .page-hero-content h1 {
                font-size: 2rem;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
            }
            .btn-cta-large {
                width: 100%;
            }
            .steps-list {
                grid-template-columns: 1fr;
            }
            footer .container {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .promo-grid {
                grid-template-columns: 1fr;
            }
            .page-hero {
                padding: 130px 0 60px;
                min-height: 40vh;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .cta-box-text h2 {
                font-size: 1.8rem;
            }
        }