/* roulang page: index */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }

        .btn-glass {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 24px;
            transition: var(--transition-smooth);
        }

        .btn-glass:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        /* Navbar */
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

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

        .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 8px 4px;
            transition: var(--transition-fast);
        }

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

        .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 100%;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
            box-shadow: 0 0 8px var(--accent-cyan);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-smooth);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: 0 2px 10px rgba(0, 80, 255, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 4px 20px rgba(0, 240, 255, 0.55);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: #fff;
            padding: 6px 12px;
            border-radius: var(--radius-sm);
        }

        .navbar-toggler-icon {
            filter: invert(1);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                border-radius: var(--radius-md);
                padding: var(--spacing-sm);
                margin-top: 8px;
                border: 1px solid var(--border-color);
            }
            .navbar-nav {
                gap: 8px;
                flex-direction: column;
                align-items: flex-start;
            }
            .navbar-actions {
                margin-top: 12px;
                flex-wrap: wrap;
            }
        }

        /* Hero Bento */
        .hero-bento {
            display: grid;
            grid-template-columns: 1.4fr 0.8fr;
            grid-template-rows: auto auto;
            gap: 24px;
            align-items: stretch;
            padding-top: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
        }

        .hero-bento-main {
            grid-row: span 2;
            background: linear-gradient(135deg, #0D111E, #1A1E35);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-lg) var(--spacing-md);
            display: flex;
            flex-direction: column;
            justify-content: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 0 40px rgba(0, 80, 255, 0.15);
            backdrop-filter: blur(8px);
        }

        .hero-bento-main::before {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 260px;
            height: 260px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.25) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-bento-feature {
            background: var(--bg-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            display: flex;
            flex-direction: column;
            justify-content: center;
            transition: var(--transition-smooth);
        }

        .hero-bento-feature:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.2);
        }

        .hero-cta-strip {
            background: linear-gradient(90deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.2));
            border: 1px solid var(--border-color);
            border-radius: 50px;
            padding: 14px 28px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
            margin-top: var(--spacing-md);
        }

        @media (max-width: 991.98px) {
            .hero-bento {
                grid-template-columns: 1fr;
            }
            .hero-bento-main {
                grid-row: auto;
            }
        }

        /* Section headings */
        .section-label {
            font-size: 0.85rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1.5px;
            color: var(--accent-cyan);
            margin-bottom: 8px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.3;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1.1rem;
            max-width: 760px;
            margin-bottom: var(--spacing-lg);
        }

        /* Card game */
        .game-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.25);
        }

        .game-card-img {
            position: relative;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: #1A1E35;
        }

        .game-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

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

        .game-card-body {
            padding: var(--spacing-sm);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .badge-neon {
            background: linear-gradient(135deg, var(--accent-pink), #FF4040);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 800;
            padding: 4px 10px;
            border-radius: 50px;
            letter-spacing: 0.5px;
        }

        .badge-cyan {
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            border: 1px solid var(--accent-cyan);
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-md);
            margin-bottom: 16px;
            transition: var(--transition-fast);
        }

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

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            font-weight: 700;
            display: flex;
            justify-content: space-between;
            align-items: center;
            color: var(--text-primary);
        }

        .faq-answer {
            padding: 0 24px 20px;
            color: var(--text-secondary);
            display: none;
        }

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

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

        /* Timeline */
        .timeline {
            position: relative;
            padding-left: 32px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
        }

        .timeline-node {
            position: relative;
            margin-bottom: 32px;
            padding-left: 24px;
        }

        .timeline-node::before {
            content: '';
            position: absolute;
            left: -28px;
            top: 6px;
            width: 14px;
            height: 14px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 10px var(--accent-cyan);
        }

        /* FAB */
        .fab-custom {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: rgba(19, 24, 39, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.5);
            animation: fabPulse 2.5s infinite ease-in-out;
            color: var(--accent-cyan);
            font-size: 1.6rem;
        }

        .fab-custom:hover {
            border-color: var(--accent-cyan);
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.75);
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.7; }
            50% { opacity: 1; }
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 18px;
            height: 18px;
            background: var(--accent-pink);
            border-radius: 50%;
            box-shadow: 0 0 8px var(--accent-pink);
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-md);
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: var(--spacing-lg);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.08);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 0.9rem;
        }

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

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        .text-gradient {
            background: linear-gradient(135deg, var(--accent-cyan), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }

        .btn-glass {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 24px;
            transition: var(--transition-smooth);
        }

        .btn-glass:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        /* Navbar */
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: 8px;
            transition: var(--transition-fast);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-cyan) !important;
            background: rgba(0, 240, 255, 0.08);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-fast);
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            padding: 8px 24px;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 2px 10px rgba(0, 80, 255, 0.35);
        }

        .btn-signup:hover {
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 240, 255, 0.5);
        }

        /* Article Hero */
        .article-hero {
            background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 70%);
            padding: var(--spacing-xl) 0 var(--spacing-lg);
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 550px;
            height: 550px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 20px;
        }

        .article-category-badge {
            background: rgba(0, 240, 255, 0.12);
            border: 1px solid var(--border-color);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
        }

        .article-date {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .article-hero h1 {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .article-hero .lead {
            color: var(--text-secondary);
            font-size: 1.1rem;
            line-height: 1.65;
            max-width: 800px;
        }

        .article-featured-img {
            margin-top: var(--spacing-md);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-color);
        }

        /* Article Body */
        .article-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: var(--spacing-lg);
            align-items: start;
            padding: var(--spacing-xl) 0;
        }

        .article-body {
            background: var(--bg-secondary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            border: 1px solid rgba(255, 255, 255, 0.06);
        }

        .article-body h2 {
            font-size: 1.7rem;
            font-weight: 700;
            margin-top: var(--spacing-lg);
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
            border-left: 3px solid var(--accent-cyan);
            padding-left: 16px;
        }

        .article-body h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-top: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
            color: var(--text-primary);
        }

        .article-body p {
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-sm);
        }

        .article-body ul,
        .article-body ol {
            color: var(--text-secondary);
            padding-left: 24px;
            margin-bottom: var(--spacing-sm);
        }

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

        .article-body img {
            border-radius: var(--radius-md);
            margin: var(--spacing-md) 0;
        }

        .article-body blockquote {
            border-left: 4px solid var(--accent-pink);
            background: rgba(255, 0, 127, 0.05);
            padding: 20px 24px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: var(--spacing-md) 0;
            color: var(--text-secondary);
            font-style: italic;
        }

        .article-body .highlight-box {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 24px;
            margin: var(--spacing-md) 0;
        }

        .article-sidebar {
            position: sticky;
            top: calc(var(--navbar-height) + 20px);
        }

        .sidebar-card {
            background: var(--bg-glass);
            backdrop-filter: blur(14px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-md);
            box-shadow: var(--shadow-card);
        }

        .sidebar-card h5 {
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-cyan);
            font-size: 1rem;
        }

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

        .sidebar-card ul li {
            padding: 10px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            font-size: 0.92rem;
        }

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

        .sidebar-card ul li a {
            color: var(--text-secondary);
            transition: var(--transition-fast);
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 80, 255, 0.12) 0%, rgba(0, 240, 255, 0.08) 100%);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            margin: var(--spacing-xl) 0;
            text-align: center;
        }

        .cta-section h4 {
            font-weight: 700;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            margin-bottom: 20px;
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            color: var(--text-muted);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .footer-custom h5,
        .footer-custom h6 {
            color: #fff;
        }

        .footer-custom a {
            color: var(--text-muted);
            text-decoration: none;
        }

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

        .footer-bottom {
            margin-top: var(--spacing-lg);
            padding-top: var(--spacing-md);
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            display: flex;
            justify-content: space-between;
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 20px;
            bottom: 40px;
            z-index: 1040;
            width: 52px;
            height: 52px;
            border-radius: 50px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            animation: neonPulse 2.2s infinite;
        }

        .fab-floating:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.75);
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-pink)) 1;
        }

        @keyframes neonPulse {
            0%,
            100% {
                box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
            }
            50% {
                box-shadow: 0 0 28px rgba(255, 0, 127, 0.5);
            }
        }

        .not-found-state {
            text-align: center;
            padding: 80px 20px;
        }

        .not-found-state i {
            font-size: 3rem;
            color: var(--accent-pink);
            margin-bottom: 20px;
        }

        @media (max-width: 992px) {
            .article-content-wrapper {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
            }
            .article-hero h1 {
                font-size: 2rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .navbar-actions {
                margin-top: 12px;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.9rem;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .article-body {
                padding: var(--spacing-md);
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: var(--navbar-height);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition-fast);
        }
        a:hover {
            color: var(--accent-blue);
        }
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }
        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }
        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }
        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            white-space: nowrap;
        }
        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }
        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }
        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }
        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }
        .navbar-brand {
            font-size: 1.25rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }
        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-link {
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 16px;
            border-radius: 6px;
            color: var(--text-secondary);
            transition: var(--transition-fast);
        }
        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }
        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-weight: 600;
            cursor: pointer;
            padding: 8px 16px;
            transition: var(--transition-fast);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 10px 24px;
            border-radius: 50px;
            cursor: pointer;
            transition: var(--transition-smooth);
        }
        .page-banner {
            position: relative;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            min-height: 420px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(8,9,15,0.92) 0%, rgba(13,17,30,0.7) 60%, rgba(8,9,15,0.85) 100%);
            z-index: 1;
        }
        .page-banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }
        .page-banner-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.15;
        }
        .hot-tag {
            display: inline-block;
            background: var(--accent-pink);
            color: #fff;
            font-size: 0.75rem;
            font-weight: 700;
            padding: 4px 14px;
            border-radius: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .promo-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: var(--transition-smooth);
            height: 100%;
            position: relative;
            overflow: hidden;
        }
        .promo-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }
        .promo-card .promo-value {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .badge-promo {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-pink);
            color: #fff;
            font-weight: 700;
            font-size: 0.7rem;
            padding: 4px 10px;
            border-radius: 20px;
        }
        .step-item {
            display: flex;
            align-items: flex-start;
            gap: 20px;
            margin-bottom: var(--spacing-md);
        }
        .step-number {
            flex-shrink: 0;
            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;
        }
        .faq-item {
            border-bottom: 1px solid rgba(255,255,255,0.08);
            padding: 20px 0;
        }
        .faq-item h5 {
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.12);
            padding: 60px 0 30px;
            margin-top: var(--spacing-xl);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.06);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 0.8rem;
            color: var(--text-muted);
        }
        @media (max-width: 991px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
            .page-banner-content h1 {
                font-size: 2rem;
            }
            .navbar-nav {
                flex-direction: column;
                align-items: flex-start;
                gap: 4px;
            }
        }
        @media (max-width: 767px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }

        .btn-glass {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 24px;
            transition: var(--transition-smooth);
        }

        .btn-glass:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 600;
            padding: 8px 18px !important;
            border-radius: 50px;
            transition: var(--transition-fast);
            white-space: nowrap;
            font-size: 0.95rem;
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--accent-cyan) !important;
            background: rgba(0, 240, 255, 0.08);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 8px 20px;
            transition: var(--transition-fast);
            cursor: pointer;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            font-weight: 700;
            border-radius: 50px;
            padding: 8px 24px;
            transition: var(--transition-smooth);
            cursor: pointer;
            box-shadow: 0 2px 8px rgba(0, 80, 255, 0.4);
        }

        .btn-signup:hover {
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            padding: 6px 10px;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0,240,255, 0.7)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding: var(--spacing-xl) 0 var(--spacing-md);
            margin-top: var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: var(--spacing-lg);
            padding-bottom: var(--spacing-lg);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-custom h5,
        .footer-custom h6 {
            color: #fff;
            font-weight: 700;
        }

        .footer-custom ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }

        .footer-custom ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: var(--spacing-md);
            font-size: 0.85rem;
            color: var(--text-muted);
        }

        .hero-category {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent);
            border-radius: 50%;
            pointer-events: none;
        }

        .icon-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .icon-item {
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm);
            text-align: center;
            transition: var(--transition-smooth);
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 8px;
        }

        .icon-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            transform: translateY(-3px);
        }

        .icon-item i {
            font-size: 2rem;
            color: var(--accent-cyan);
        }

        .icon-item span {
            font-size: 0.85rem;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .status-bar {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-sm) var(--spacing-md);
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
        }

        .status-dot {
            width: 10px;
            height: 10px;
            border-radius: 50%;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px var(--accent-cyan);
            animation: pulse-dot 2s infinite;
        }

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

        .game-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: var(--shadow-card);
            position: relative;
        }

        .game-card:hover {
            border-color: var(--accent-blue);
            transform: translateY(-5px);
            box-shadow: 0 12px 32px rgba(0, 80, 255, 0.3);
        }

        .game-card .card-img-wrapper {
            position: relative;
            overflow: hidden;
            height: 200px;
        }

        .game-card .card-img-wrapper img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition-smooth);
        }

        .game-card:hover .card-img-wrapper img {
            transform: scale(1.08);
        }

        .game-card .card-overlay {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent-pink);
            color: #fff;
            font-weight: 700;
            font-size: 0.75rem;
            padding: 4px 12px;
            border-radius: 50px;
            z-index: 2;
            text-transform: uppercase;
        }

        .game-card .card-body {
            padding: var(--spacing-sm);
        }

        .game-card .card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: #fff;
        }

        .game-card .card-text {
            color: var(--text-muted);
            font-size: 0.9rem;
        }

        .provider-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.15);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 4px 12px;
            border-radius: 50px;
            margin-right: 8px;
        }

        .feature-block {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: var(--transition-smooth);
        }

        .feature-block:hover {
            border-color: var(--accent-blue);
            box-shadow: 0 0 20px rgba(0, 80, 255, 0.2);
        }

        .feature-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            margin-bottom: var(--spacing-sm);
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: var(--spacing-md);
            margin-bottom: var(--spacing-sm);
            transition: var(--transition-fast);
        }

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

        .faq-question {
            font-weight: 700;
            font-size: 1.05rem;
            color: #fff;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .faq-answer {
            margin-top: var(--spacing-xs);
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .cta-section {
            background: linear-gradient(135deg, rgba(0, 80, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            text-align: center;
        }

        .fab-custom {
            position: fixed;
            left: 1rem;
            bottom: 6rem;
            z-index: 1050;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(var(--bg-glass), var(--bg-glass)), linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transition: var(--transition-smooth);
            opacity: 0.7;
            animation: float-fab 3s ease-in-out infinite;
        }

        .fab-custom:hover {
            opacity: 1;
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
        }

        .fab-custom i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

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

        .section-title {
            font-size: 2rem;
            font-weight: 800;
            color: #fff;
            margin-bottom: var(--spacing-sm);
            position: relative;
        }

        .section-title::after {
            content: '';
            display: block;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-blue));
            margin-top: var(--spacing-xs);
            border-radius: 2px;
        }

        @media (max-width: 991.98px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .icon-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .navbar-actions {
                margin-top: 12px;
            }
        }

        @media (max-width: 767.98px) {
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .icon-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .section-title {
                font-size: 1.6rem;
            }
            .footer-bottom {
                flex-direction: column;
                gap: 8px;
                text-align: center;
            }
            .navbar-actions {
                flex-direction: column;
                width: 100%;
            }
            .btn-login,
            .btn-signup {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }

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

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }

        .btn-glass {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 24px;
            transition: var(--transition-smooth);
            cursor: pointer;
        }

        .btn-glass:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
            color: #fff;
        }

        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
            text-decoration: none;
        }

        .navbar-brand:hover {
            opacity: 0.9;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 8px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-item .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            padding: 8px 16px;
            border-radius: 50px;
            transition: var(--transition-fast);
            white-space: nowrap;
            text-decoration: none;
            display: inline-block;
        }

        .nav-item .nav-link:hover,
        .nav-item .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--text-muted);
            color: var(--text-primary);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-pink), #D4006A);
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 700;
            cursor: pointer;
            white-space: nowrap;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(255, 0, 127, 0.3);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 20px rgba(255, 0, 127, 0.5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.3);
            background: transparent;
            padding: 6px 10px;
            border-radius: 6px;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(255, 255, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
            width: 24px;
            height: 24px;
        }

        .hero-category {
            background: linear-gradient(135deg, #0D111E 0%, #131827 50%, #1A1030 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 600px;
            height: 100%;
            background: radial-gradient(circle, rgba(0, 80, 255, 0.15) 0%, transparent 70%);
            pointer-events: none;
        }

        .live-badge {
            background: var(--accent-pink);
            color: #fff;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            animation: pulse-live 2s infinite;
        }

        @keyframes pulse-live {
            0%,
            100% {
                box-shadow: 0 0 0 0 rgba(255, 0, 127, 0.6);
            }
            50% {
                box-shadow: 0 0 0 10px rgba(255, 0, 127, 0);
            }
        }

        .countdown-timer {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .countdown-item {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 16px 20px;
            min-width: 80px;
            text-align: center;
        }

        .countdown-item .number {
            font-size: 2rem;
            font-weight: 800;
            background: linear-gradient(135deg, var(--accent-cyan), #fff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .countdown-item .label {
            font-size: 0.75rem;
            color: var(--text-muted);
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-top: 4px;
        }

        .game-card-neon {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: var(--transition-smooth);
            cursor: pointer;
            position: relative;
            overflow: hidden;
        }

        .game-card-neon:hover {
            transform: translateY(-6px);
            border-color: var(--accent-cyan);
            box-shadow: 0 12px 40px rgba(0, 240, 255, 0.2);
        }

        .game-card-neon .tag-hot {
            position: absolute;
            top: 12px;
            right: 12px;
            background: var(--accent-pink);
            color: #fff;
            font-weight: 700;
            font-size: 0.7rem;
            padding: 3px 10px;
            border-radius: 50px;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            z-index: 2;
        }

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

        .feature-list li {
            padding: 10px 0 10px 28px;
            position: relative;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .feature-list li::before {
            content: '';
            position: absolute;
            left: 0;
            top: 16px;
            width: 8px;
            height: 8px;
            background: var(--accent-cyan);
            border-radius: 50%;
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.6);
        }

        .faq-item {
            border-bottom: 1px solid rgba(255, 255, 255, 0.06);
            padding: var(--spacing-md) 0;
        }

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--text-primary);
            cursor: pointer;
            transition: var(--transition-fast);
        }

        .faq-item h4:hover {
            color: var(--accent-cyan);
        }

        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.08);
            padding: var(--spacing-xl) 0 var(--spacing-md);
        }

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

        .footer-custom h5,
        .footer-custom h6 {
            color: var(--text-primary);
        }

        .footer-custom ul {
            list-style: none;
            padding: 0;
        }

        .footer-custom ul li {
            margin-bottom: 6px;
        }

        .footer-custom ul li a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }

        .footer-custom ul li a:hover {
            color: var(--accent-cyan);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.06);
            padding-top: var(--spacing-md);
            display: flex;
            justify-content: space-between;
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-floating-left {
            position: fixed;
            left: 20px;
            bottom: 100px;
            z-index: 1000;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 9, 15, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
            transition: var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 1.4rem;
        }

        .fab-floating-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -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;
            z-index: -1;
        }

        .fab-floating-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.7);
        }

        @media (max-width: 991.98px) {
            .navbar-collapse {
                background: rgba(8, 9, 15, 0.95);
                backdrop-filter: blur(20px);
                padding: 20px;
                border-radius: var(--radius-lg);
                margin-top: 12px;
                border: 1px solid rgba(255, 255, 255, 0.1);
            }
            .navbar-nav {
                flex-direction: column;
                gap: 4px;
            }
            .navbar-actions {
                flex-direction: column;
                margin-top: 16px;
            }
            .navbar-actions .btn-login,
            .navbar-actions .btn-signup {
                width: 100%;
                text-align: center;
            }
            .hero-category .row {
                flex-direction: column;
            }
            .countdown-timer {
                justify-content: flex-start;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 1rem;
            }
            .countdown-item {
                min-width: 60px;
                padding: 12px;
            }
            .countdown-item .number {
                font-size: 1.5rem;
            }
            .btn-neon,
            .btn-outline-neon {
                padding: 12px 20px;
                font-size: 0.85rem;
                width: 100%;
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #131827;
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: rgba(0, 240, 255, 0.2);
            --border-strong: #0052FF;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --radius-xl: 28px;
            --spacing-xs: 8px;
            --spacing-sm: 16px;
            --spacing-md: 24px;
            --spacing-lg: 40px;
            --spacing-xl: 64px;
            --spacing-xxl: 96px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --navbar-height: 72px;
        }

        html {
            scroll-behavior: smooth;
        }

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

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

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

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

        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
        }

        .container {
            max-width: 1240px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section-padding {
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .section-padding-lg {
            padding-top: var(--spacing-xxl);
            padding-bottom: var(--spacing-xxl);
        }

        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .btn-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: var(--text-primary);
            font-weight: 700;
            border-radius: 50px;
            padding: 14px 32px;
            position: relative;
            overflow: hidden;
            transition: var(--transition-smooth);
            box-shadow: 0 4px 12px rgba(0, 80, 255, 0.4);
            text-transform: uppercase;
            letter-spacing: 0.5px;
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }

        .btn-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.55);
            color: #fff;
        }

        .btn-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 6px rgba(0, 80, 255, 0.4);
        }

        .btn-outline-neon {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 700;
            border-radius: 50px;
            padding: 12px 30px;
            transition: var(--transition-smooth);
            cursor: pointer;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-outline-neon:hover {
            background: var(--accent-cyan);
            color: var(--bg-primary);
            box-shadow: var(--shadow-neon);
        }

        .btn-glass {
            background: var(--bg-glass);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.15);
            color: var(--text-primary);
            font-weight: 600;
            border-radius: 50px;
            padding: 10px 24px;
            transition: var(--transition-smooth);
        }

        .btn-glass:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.3);
        }

        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            height: var(--navbar-height);
            display: flex;
            align-items: center;
        }

        .navbar-custom .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            width: 100%;
        }

        .navbar-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-primary);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            white-space: nowrap;
            letter-spacing: -0.5px;
        }

        .navbar-nav {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .nav-link {
            color: var(--text-secondary) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: 20px;
            transition: var(--transition-fast);
        }

        .nav-link:hover,
        .nav-link.active {
            color: var(--text-primary) !important;
            background: rgba(0, 240, 255, 0.1);
        }

        .navbar-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .btn-login {
            background: transparent;
            border: none;
            color: var(--text-secondary);
            font-weight: 600;
            padding: 8px 18px;
            border-radius: 20px;
            transition: var(--transition-fast);
            cursor: pointer;
        }

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

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 10px 22px;
            border-radius: 50px;
            transition: var(--transition-smooth);
            cursor: pointer;
            box-shadow: 0 4px 10px rgba(0, 80, 255, 0.35);
        }

        .btn-signup:hover {
            box-shadow: 0 6px 18px rgba(0, 240, 255, 0.5);
            transform: translateY(-1px);
        }

        .navbar-toggler {
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-sm);
            padding: 6px 10px;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 240, 255, 0.8)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        .hero-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-xl);
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .hero-content {
            position: relative;
            z-index: 1;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--border-color);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: var(--spacing-md);
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            color: var(--text-primary);
            margin-bottom: var(--spacing-sm);
        }

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

        .hero-subtitle {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
            max-width: 620px;
        }

        .hero-features {
            list-style: none;
            padding: 0;
            margin: 0 0 var(--spacing-lg) 0;
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .hero-features li {
            display: flex;
            align-items: center;
            gap: 8px;
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
        }

        .hero-features li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            margin-bottom: var(--spacing-md);
        }

        .trust-strip {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .trust-strip i {
            color: var(--accent-cyan);
            font-size: 1rem;
        }

        .hero-visual {
            position: relative;
            z-index: 1;
        }

        .hero-visual .glass-card {
            padding: 0;
            overflow: hidden;
            border-radius: var(--radius-xl);
        }

        .hero-visual img {
            width: 100%;
            height: auto;
            border-radius: var(--radius-xl);
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: var(--spacing-xs);
        }

        .section-subtitle {
            font-size: 1rem;
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
        }

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: var(--spacing-md);
            transition: var(--transition-smooth);
            height: 100%;
        }

        .strategy-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.12);
            transform: translateY(-2px);
        }

        .strategy-icon {
            width: 56px;
            height: 56px;
            background: linear-gradient(135deg, rgba(0, 80, 255, 0.15), rgba(0, 240, 255, 0.15));
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: var(--spacing-sm);
        }

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

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

        .tip-block {
            background: var(--bg-secondary);
            border-left: 3px solid var(--accent-cyan);
            padding: var(--spacing-md);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin-bottom: var(--spacing-sm);
        }

        .tip-block p {
            color: var(--text-secondary);
            margin-bottom: 0;
            font-size: 0.95rem;
        }

        .tip-block strong {
            color: var(--accent-cyan);
        }

        .faq-accordion .accordion-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md) !important;
            margin-bottom: var(--spacing-sm);
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-primary);
            font-weight: 600;
            box-shadow: none;
            padding: var(--spacing-md);
            border-radius: var(--radius-md) !important;
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.05);
            color: var(--accent-cyan);
        }

        .faq-accordion .accordion-button::after {
            filter: invert(1);
        }

        .faq-accordion .accordion-body {
            color: var(--text-secondary);
            font-size: 0.95rem;
            padding: var(--spacing-md);
        }

        .cta-section {
            background: linear-gradient(135deg, var(--bg-secondary), var(--bg-primary));
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            z-index: 0;
        }

        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-color);
            padding-top: var(--spacing-xl);
            padding-bottom: var(--spacing-md);
        }

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

        .footer-custom a {
            color: var(--text-muted);
            font-size: 0.9rem;
            transition: var(--transition-fast);
        }

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

        .footer-custom .badge {
            font-size: 0.8rem;
            padding: 6px 12px;
            border-radius: 20px;
        }

        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: var(--spacing-xs);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            padding-top: var(--spacing-md);
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .fab-floating {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1040;
        }

        .fab-btn {
            width: 56px;
            height: 56px;
            border-radius: 50px;
            background: var(--bg-glass);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            color: var(--accent-cyan);
            font-size: 1.4rem;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .fab-btn::before {
            content: '';
            position: absolute;
            top: -2px;
            left: -2px;
            right: -2px;
            bottom: -2px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue), var(--accent-pink));
            z-index: -1;
            opacity: 0.7;
            transition: opacity 0.3s;
        }

        .fab-btn:hover {
            transform: scale(1.08);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.7);
            color: #fff;
        }

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

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

        @keyframes pulse-dot {
            0%,
            100% {
                opacity: 1;
                transform: scale(1);
            }
            50% {
                opacity: 0.4;
                transform: scale(1.3);
            }
        }

        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.2rem;
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
                align-items: flex-start;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .navbar-actions {
                margin-top: 12px;
                flex-direction: column;
                align-items: stretch;
                gap: 8px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-floating {
                left: 16px;
                bottom: 80px;
            }
            .fab-btn {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }