/* roulang page: index */
:root {
            --bg-deep: #08090F;
            --bg-elevated: rgba(13, 17, 30, 0.8);
            --bg-card: rgba(18, 25, 40, 0.65);
            --accent-primary: #0052FF;
            --accent-secondary: #00F0FF;
            --accent-glow: rgba(0, 82, 255, 0.5);
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-subtle: rgba(0, 240, 255, 0.15);
            --border-active: rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --shadow-glow: 0 0 20px rgba(0, 82, 255, 0.25);
            --transition-base: all 0.25s ease;
        }

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

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-deep);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

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

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

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

        /* Navbar */
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 16px 0;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1030;
            transition: var(--transition-base);
        }

        .navbar-custom .navbar-brand {
            font-weight: 700;
            font-size: 1.25rem;
            background: linear-gradient(135deg, var(--accent-secondary) 0%, var(--accent-primary) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.3px;
            white-space: nowrap;
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 500;
            padding: 8px 16px !important;
            border-radius: var(--radius-sm);
            margin: 0 4px;
            transition: var(--transition-base);
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--text-primary) !important;
            background: rgba(0, 240, 255, 0.08);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.15);
        }

        .btn-outline-neon {
            border: 1px solid var(--accent-secondary);
            color: var(--accent-secondary);
            background: transparent;
            padding: 8px 22px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition-base);
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.15);
            color: #fff;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.4);
        }

        .btn-primary-neon {
            background: var(--accent-primary);
            border: none;
            color: #fff;
            padding: 10px 26px;
            border-radius: 50px;
            font-weight: 700;
            box-shadow: var(--shadow-glow);
            transition: var(--transition-base);
            letter-spacing: 0.3px;
        }

        .btn-primary-neon:hover {
            background: #0040cc;
            box-shadow: 0 0 25px rgba(0, 82, 255, 0.7);
            transform: translateY(-2px);
        }

        /* Hero Section */
        .hero-section {
            padding: 140px 0 80px;
            position: relative;
            background: radial-gradient(circle at 10% 20%, rgba(0, 82, 255, 0.12) 0%, transparent 45%);
            min-height: 85vh;
            display: flex;
            align-items: center;
        }

        .hero-content h1 {
            font-size: 3.25rem;
            font-weight: 800;
            line-height: 1.2;
            background: linear-gradient(to right, #fff, #cbd5e1);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 24px;
            letter-spacing: -0.5px;
        }

        .hero-content .lead {
            color: var(--text-secondary);
            font-size: 1.2rem;
            max-width: 620px;
            line-height: 1.7;
            margin-bottom: 32px;
        }

        .hero-visual {
            background: rgba(13, 17, 30, 0.7);
            backdrop-filter: blur(16px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-card);
        }

        /* Glassmorphism Cards */
        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: var(--transition-base);
            height: 100%;
        }

        .glass-card:hover {
            border-color: var(--border-active);
            box-shadow: var(--shadow-glow);
            transform: translateY(-5px);
            background: rgba(18, 25, 40, 0.8);
        }

        .section-title {
            font-weight: 700;
            font-size: 2.2rem;
            margin-bottom: 16px;
            letter-spacing: -0.3px;
        }

        .section-subtitle {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-bottom: 48px;
            max-width: 700px;
        }

        .badge-custom {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-secondary);
            border: 1px solid rgba(0, 240, 255, 0.25);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
        }

        .stat-number {
            font-size: 2.4rem;
            font-weight: 800;
            color: var(--accent-secondary);
            line-height: 1;
        }

        .list-check li {
            list-style: none;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .list-check i {
            color: var(--accent-secondary);
            font-size: 1.2rem;
        }

        /* Footer */
        .footer-custom {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            color: var(--text-muted);
        }

        .footer-custom a {
            color: var(--text-secondary);
        }

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

        @media (max-width: 992px) {
            .hero-content h1 {
                font-size: 2.5rem;
            }
        }

        @media (max-width: 768px) {
            .hero-content h1 {
                font-size: 2rem;
            }
            .navbar-custom .navbar-brand {
                font-size: 1rem;
            }
        }

        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 24px;
            z-index: 1050;
            background: rgba(8, 9, 15, 0.6);
            backdrop-filter: blur(14px);
            border: 1px solid var(--accent-secondary);
            border-radius: 50px;
            padding: 12px 24px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--accent-secondary);
            font-weight: 600;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: var(--transition-base);
        }

        .fab-left:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.7);
            color: #fff;
        }

/* roulang page: article */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-gold: #FFD700;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-glow: rgba(0, 240, 255, 0.3);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --radius-sm: 0.5rem;
            --font-heading: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Segoe UI', system-ui, -apple-system, sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            background-image: 
                radial-gradient(ellipse at 50% 0%, rgba(0, 82, 255, 0.08) 0%, transparent 60%),
                radial-gradient(ellipse at 80% 20%, rgba(0, 240, 255, 0.04) 0%, transparent 50%);
        }

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

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

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

        button, .btn {
            cursor: pointer;
            font-family: var(--font-body);
        }

        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 1.5rem;
        }

        /* Navigation */
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            padding: 0.75rem 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-smooth);
        }

        .navbar-brand {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--text-primary) !important;
            letter-spacing: -0.01em;
            white-space: nowrap;
        }

        .navbar-brand span {
            color: var(--accent-cyan);
        }

        .nav-link-custom {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.9rem;
            padding: 0.5rem 1rem;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.1);
        }

        .btn-outline-neon {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 0.5rem 1.25rem;
            border-radius: 2rem;
            transition: all var(--transition-fast);
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.3);
            color: #fff;
        }

        .btn-primary-neon {
            background: linear-gradient(135deg, var(--accent-blue) 0%, #0040cc 100%);
            border: none;
            color: #fff;
            font-weight: 700;
            font-size: 0.85rem;
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .btn-primary-neon:hover {
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.6);
            transform: translateY(-1px);
            color: #fff;
        }

        .offcanvas-custom {
            background: var(--bg-secondary);
            border-left: 1px solid var(--border-subtle);
        }

        .offcanvas-custom .nav-link-custom {
            display: block;
            padding: 0.75rem 1.5rem;
            border-radius: 0;
        }

        /* Article Header */
        .article-header {
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.12) 0%, transparent 100%);
            padding: 3rem 0 2rem;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .article-header::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .article-category-badge {
            display: inline-block;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            border: 1px solid rgba(0, 240, 255, 0.3);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.3rem 0.9rem;
            border-radius: 2rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 1.25rem;
        }

        .article-header h1 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.5rem;
            line-height: 1.3;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.25rem;
            color: var(--text-muted);
            font-size: 0.85rem;
            flex-wrap: wrap;
        }

        .article-meta i {
            margin-right: 0.35rem;
            color: var(--accent-cyan);
        }

        .pull-quote-banner {
            background: url('/assets/images/backpic/back-1.png') center/cover no-repeat;
            position: relative;
            min-height: 280px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin: 2rem 0;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .pull-quote-banner::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(8, 9, 15, 0.75) 0%, rgba(13, 17, 30, 0.65) 100%);
        }

        .pull-quote-content {
            position: relative;
            z-index: 2;
            text-align: center;
            padding: 2rem;
            max-width: 750px;
        }

        .pull-quote-content blockquote {
            font-size: 1.5rem;
            font-weight: 600;
            font-style: italic;
            color: var(--text-primary);
            line-height: 1.5;
            border: none;
            margin: 0;
        }

        .pull-quote-content blockquote::before {
            content: '\201C';
            font-size: 4rem;
            color: var(--accent-cyan);
            display: block;
            line-height: 1;
            margin-bottom: 0.5rem;
            opacity: 0.7;
        }

        /* Article Body */
        .article-body {
            padding: 3rem 0;
            font-size: 1.05rem;
            line-height: 1.75;
            color: var(--text-secondary);
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.6rem;
            color: var(--text-primary);
            margin-top: 2.5rem;
            margin-bottom: 1rem;
            padding-bottom: 0.5rem;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
        }

        .article-body h2::after {
            content: '';
            position: absolute;
            bottom: -1px;
            left: 0;
            width: 60px;
            height: 3px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .article-body h3 {
            font-weight: 600;
            font-size: 1.25rem;
            color: var(--text-primary);
            margin-top: 2rem;
            margin-bottom: 0.75rem;
        }

        .article-body p {
            margin-bottom: 1.25rem;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 1.5rem;
            margin-bottom: 1.25rem;
        }

        .article-body li {
            margin-bottom: 0.5rem;
        }

        .article-body strong {
            color: var(--accent-cyan);
            font-weight: 600;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 1.5rem 0;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
        }

        .article-body blockquote {
            background: rgba(0, 240, 255, 0.03);
            border-left: 4px solid var(--accent-cyan);
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            font-style: italic;
            color: var(--text-secondary);
        }

        .article-cta-box {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.12) 0%, rgba(0, 240, 255, 0.06) 100%);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            margin: 2.5rem 0;
            text-align: center;
            backdrop-filter: blur(8px);
        }

        .article-cta-box h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.4rem;
            color: #fff;
            margin-bottom: 0.5rem;
        }

        .article-cta-box p {
            color: var(--text-secondary);
            margin-bottom: 1.25rem;
        }

        .btn-cta-large {
            background: linear-gradient(135deg, var(--accent-blue) 0%, #0040cc 100%);
            color: #fff;
            font-weight: 700;
            font-size: 1rem;
            padding: 0.75rem 2.5rem;
            border-radius: 2.5rem;
            border: none;
            box-shadow: 0 6px 30px rgba(0, 82, 255, 0.5);
            transition: all var(--transition-fast);
            display: inline-block;
        }

        .btn-cta-large:hover {
            box-shadow: 0 8px 40px rgba(0, 82, 255, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Not Found State */
        .not-found-article {
            text-align: center;
            padding: 5rem 1.5rem;
            min-height: 50vh;
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
        }

        .not-found-article i {
            font-size: 4rem;
            color: var(--accent-cyan);
            opacity: 0.4;
            margin-bottom: 1.5rem;
        }

        .not-found-article h2 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.8rem;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .not-found-article p {
            color: var(--text-muted);
            margin-bottom: 2rem;
            max-width: 500px;
        }

        /* Footer */
        .footer-custom {
            background: var(--bg-secondary);
            border-top: 1px solid var(--border-subtle);
            padding: 2.5rem 0;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        .footer-custom .fw-bold {
            color: var(--text-primary);
            font-family: var(--font-heading);
        }

        /* Back to Top */
        .back-to-top {
            position: fixed;
            bottom: 1.5rem;
            right: 1.5rem;
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: rgba(0, 82, 255, 0.7);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 1000;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 15px rgba(0, 82, 255, 0.3);
        }

        .back-to-top:hover {
            background: rgba(0, 82, 255, 0.9);
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.5);
            transform: translateY(-2px);
        }

        /* Responsive */
        @media (max-width: 991.98px) {
            .article-header h1 {
                font-size: 1.9rem;
            }
            .pull-quote-content blockquote {
                font-size: 1.2rem;
            }
            .pull-quote-banner {
                min-height: 200px;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
        }

        @media (max-width: 767.98px) {
            .article-header {
                padding: 2rem 0 1.5rem;
            }
            .article-header h1 {
                font-size: 1.5rem;
            }
            .article-body {
                padding: 2rem 0;
                font-size: 0.95rem;
            }
            .article-body h2 {
                font-size: 1.3rem;
            }
            .article-cta-box {
                padding: 1.5rem;
            }
            .pull-quote-banner {
                min-height: 160px;
            }
            .pull-quote-content blockquote {
                font-size: 1rem;
            }
            .pull-quote-content blockquote::before {
                font-size: 2.5rem;
            }
            .container-custom {
                padding: 0 1rem;
            }
        }

        @media (max-width: 520px) {
            .navbar-brand {
                font-size: 0.95rem;
            }
            .article-header h1 {
                font-size: 1.3rem;
            }
            .article-meta {
                gap: 0.75rem;
                font-size: 0.78rem;
            }
            .btn-cta-large {
                font-size: 0.9rem;
                padding: 0.65rem 1.75rem;
            }
            .back-to-top {
                width: 38px;
                height: 38px;
                bottom: 1rem;
                right: 1rem;
            }
        }

        .glass-card {
            background: var(--bg-card);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

/* roulang page: category1 */
:root {
            --bg-primary: #0D111E;
            --bg-secondary: #121827;
            --bg-card: rgba(18, 24, 39, 0.8);
            --bg-glass: rgba(13, 17, 30, 0.75);
            --accent-cyan: #00F0FF;
            --accent-blue: #0052FF;
            --accent-pink: #FF007F;
            --accent-yellow: #FFD700;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #8892B0;
            --border-neon: rgba(0, 240, 255, 0.3);
            --border-glow: rgba(0, 240, 255, 0.6);
            --shadow-glow: 0 0 20px rgba(0, 240, 255, 0.3);
            --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.4);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --radius-full: 50px;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        body {
            font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }

        /* Glass Morphism Utilities */
        .glass-card {
            background: var(--bg-glass);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
        }

        .glass-card-solid {
            background: var(--bg-card);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            transition: all var(--transition-smooth);
        }

        .glass-card-solid:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow), var(--shadow-card);
            transform: translateY(-4px);
        }

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

        /* Navigation */
        .navbar-custom {
            background: rgba(13, 17, 30, 0.85);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 14px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: all var(--transition-smooth);
        }

        .navbar-brand {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-cyan);
            text-decoration: none;
            letter-spacing: -0.5px;
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
            transition: all var(--transition-fast);
        }

        .navbar-brand:hover {
            color: #fff;
            text-shadow: 0 0 20px rgba(0, 240, 255, 0.7);
        }

        .nav-link-custom {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: var(--radius-full);
            transition: all var(--transition-fast);
            position: relative;
        }

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

        .nav-link-custom.active {
            font-weight: 600;
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }

        .btn-outline-neon {
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            background: transparent;
            padding: 8px 22px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.9rem;
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.3);
            color: #fff;
            border-color: #fff;
        }

        .btn-primary-neon {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 9px 26px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.9rem;
            box-shadow: 0 4px 16px rgba(0, 82, 255, 0.5);
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
            letter-spacing: 0.3px;
        }

        .btn-primary-neon:hover {
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.6);
            transform: translateY(-1px);
            color: #fff;
            background: linear-gradient(135deg, #0066FF, #00BFFF);
        }

        .btn-primary-neon:active {
            transform: translateY(1px);
            box-shadow: 0 2px 8px rgba(0, 240, 255, 0.4);
        }

        .btn-accent-pink {
            background: linear-gradient(135deg, var(--accent-pink), #FF3399);
            border: none;
            color: #fff;
            padding: 10px 28px;
            border-radius: var(--radius-full);
            font-weight: 700;
            font-size: 0.95rem;
            box-shadow: 0 4px 18px rgba(255, 0, 127, 0.4);
            transition: all var(--transition-fast);
            text-decoration: none;
            display: inline-block;
        }

        .btn-accent-pink:hover {
            box-shadow: 0 6px 26px rgba(255, 0, 127, 0.65);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-accent-pink:active {
            transform: translateY(1px);
        }

        /* Offcanvas Mobile Menu */
        .offcanvas-custom {
            background: rgba(13, 17, 30, 0.98);
            backdrop-filter: blur(24px);
            border-left: 1px solid var(--border-neon);
        }

        .offcanvas-custom .nav-link-custom {
            display: block;
            padding: 14px 20px;
            font-size: 1.1rem;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            border-radius: 0;
        }

        /* Page Header Banner */
        .page-banner {
            background: linear-gradient(135deg, #0D111E 0%, #121E3A 50%, #0D111E 100%);
            position: relative;
            overflow: hidden;
            padding: 80px 0 60px;
            border-bottom: 1px solid var(--border-neon);
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 0, 127, 0.05) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .badge-neon {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            border: 1px solid var(--border-neon);
            padding: 6px 16px;
            border-radius: var(--radius-full);
            font-weight: 600;
            font-size: 0.85rem;
            display: inline-block;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.3;
            letter-spacing: -0.5px;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 700px;
        }

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

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

        .step-number {
            width: 52px;
            height: 52px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.3);
        }

        .step-content h4 {
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .step-content p {
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* Info Box */
        .info-box {
            background: rgba(0, 240, 255, 0.06);
            border-left: 4px solid var(--accent-cyan);
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            padding: 20px 24px;
            margin: 20px 0;
        }

        .info-box p {
            margin: 0;
            color: #fff;
            font-weight: 500;
        }

        /* Game Highlight Card */
        .highlight-card {
            background: var(--bg-glass);
            backdrop-filter: blur(16px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-lg);
            padding: 28px;
            transition: all var(--transition-smooth);
            height: 100%;
        }

        .highlight-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(0, 240, 255, 0.2);
        }

        .highlight-card .icon-circle {
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .highlight-card h5 {
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

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

        /* Testimonial Stats */
        .stat-block {
            text-align: center;
            padding: 24px 16px;
            background: rgba(0, 240, 255, 0.04);
            border-radius: var(--radius-md);
            border: 1px solid rgba(0, 240, 255, 0.15);
            transition: all var(--transition-smooth);
        }

        .stat-block:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
        }

        .stat-number {
            font-size: 2.4rem;
            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;
        }

        .stat-label {
            color: var(--text-secondary);
            font-size: 0.95rem;
            margin-top: 6px;
            font-weight: 500;
        }

        /* FAQ Accordion */
        .accordion-custom .accordion-item {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-md) !important;
            margin-bottom: 14px;
            overflow: hidden;
        }

        .accordion-custom .accordion-button {
            background: rgba(13, 17, 30, 0.8);
            color: #fff;
            font-weight: 600;
            box-shadow: none;
            padding: 18px 24px;
            font-size: 1rem;
            border-radius: var(--radius-md) !important;
        }

        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.08);
            color: var(--accent-cyan);
            box-shadow: none;
        }

        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1);
        }

        .accordion-custom .accordion-body {
            background: rgba(18, 24, 39, 0.6);
            color: var(--text-secondary);
            padding: 18px 24px;
            line-height: 1.7;
            border-top: 1px solid rgba(255, 255, 255, 0.05);
        }

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.15), rgba(0, 240, 255, 0.08));
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: left;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -30%;
            right: -15%;
            width: 350px;
            height: 350px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h3 {
            font-size: 1.8rem;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-section p {
            color: var(--text-secondary);
            max-width: 500px;
            margin-bottom: 24px;
        }

        /* Footer */
        .footer-custom {
            background: rgba(10, 14, 23, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 40px 0;
            margin-top: 60px;
            color: var(--text-muted);
        }

        .footer-custom p {
            margin-bottom: 8px;
        }

        .footer-custom .fw-bold {
            color: var(--accent-cyan);
            font-size: 1.1rem;
        }

        /* FAB Left Bottom */
        .fab-custom {
            position: fixed;
            left: 24px;
            bottom: 28px;
            z-index: 999;
            width: 56px;
            height: 56px;
            background: rgba(13, 17, 30, 0.7);
            backdrop-filter: blur(16px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #00F0FF, #0052FF) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            transition: all var(--transition-smooth);
            cursor: pointer;
            animation: floatFAB 3s ease-in-out infinite;
        }

        .fab-custom:hover {
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
            background: rgba(0, 240, 255, 0.15);
            color: #fff;
        }

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

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

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 18px;
            height: 18px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0D111E;
            animation: pulseBadge 1.5s ease-in-out infinite;
        }

        @keyframes pulseBadge {
            0%,
            100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.3);
            }
        }

        /* Responsive */
        @media (max-width: 992px) {
            .section-title {
                font-size: 1.8rem;
            }
            .cta-section {
                padding: 28px;
            }
            .cta-section h3 {
                font-size: 1.5rem;
            }
            .page-banner {
                padding: 50px 0 40px;
            }
            .stat-block {
                margin-bottom: 16px;
            }
        }

        @media (max-width: 768px) {
            .container-custom {
                padding: 0 16px;
            }
            .page-banner {
                padding: 40px 0 30px;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .step-item {
                flex-direction: column;
                gap: 12px;
            }
            .step-number {
                width: 44px;
                height: 44px;
                font-size: 1.3rem;
            }
            .fab-custom {
                left: 16px;
                bottom: 20px;
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
            }
            .navbar-brand {
                font-size: 1.1rem;
            }
            .highlight-card {
                margin-bottom: 16px;
            }
            .cta-section {
                text-align: center;
            }
            .cta-section p {
                max-width: 100%;
            }
        }

        @media (max-width: 520px) {
            .btn-outline-neon,
            .btn-primary-neon {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
            .stat-number {
                font-size: 1.8rem;
            }
            .accordion-custom .accordion-button {
                padding: 14px 16px;
                font-size: 0.9rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: rgba(13, 17, 30, 0.7);
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --border-glow: rgba(0, 240, 255, 0.3);
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-blue: 0 4px 20px rgba(0, 82, 255, 0.4);
            --gradient-cyber: linear-gradient(135deg, #0052FF, #00F0FF);
            --border-radius-card: 12px;
            --border-radius-btn: 30px;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', 'Roboto', 'Oxygen', sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            overflow-x: hidden;
            background-image: radial-gradient(circle at 20% 20%, rgba(0, 82, 255, 0.08) 0%, transparent 50%), radial-gradient(circle at 80% 70%, rgba(0, 240, 255, 0.06) 0%, transparent 50%);
        }
        
        .container-custom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        /* Navigation */
        
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(15px);
            -webkit-backdrop-filter: blur(15px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            padding: 15px 0;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1050;
            transition: background 0.3s ease;
        }
        
        .navbar-brand {
            font-size: 1.5rem;
            font-weight: 800;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.5px;
            text-decoration: none;
        }
        
        .nav-link-custom {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 20px;
            transition: all 0.25s ease;
            position: relative;
        }
        
        .nav-link-custom:hover,
        .nav-link-custom.active {
            color: #FFFFFF;
            background: rgba(0, 240, 255, 0.1);
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.2);
        }
        
        .btn-outline-neon {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 8px 22px;
            border-radius: var(--border-radius-btn);
            font-weight: 700;
            font-size: 0.9rem;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        
        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.15);
            box-shadow: var(--shadow-neon);
            color: #FFFFFF;
            border-color: #FFFFFF;
        }
        
        .btn-primary-neon {
            background: var(--gradient-cyber);
            border: none;
            color: #08090F;
            padding: 8px 22px;
            border-radius: var(--border-radius-btn);
            font-weight: 700;
            font-size: 0.9rem;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-blue);
        }
        
        .btn-primary-neon:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 25px rgba(0, 82, 255, 0.7);
            color: #FFFFFF;
        }
        /* Offcanvas Mobile */
        
        .offcanvas-custom {
            background: var(--bg-secondary);
            border-left: 1px solid var(--accent-cyan);
        }
        
        .offcanvas-custom .nav-link-custom {
            display: block;
            margin: 5px 0;
            text-align: center;
        }
        /* Hero Section */
        
        .hero-category {
            padding: 130px 0 60px;
            background: linear-gradient(180deg, rgba(0, 82, 255, 0.15) 0%, transparent 80%);
            position: relative;
            overflow: hidden;
        }
        
        .badge-glow {
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 20px;
            font-weight: 700;
            font-size: 0.8rem;
            letter-spacing: 1px;
            display: inline-block;
            margin-bottom: 15px;
            box-shadow: 0 0 10px rgba(0, 240, 255, 0.2);
        }
        
        .text-gradient {
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        
        .btn-primary-large {
            background: var(--gradient-cyber);
            border: none;
            color: #000;
            padding: 12px 32px;
            border-radius: var(--border-radius-btn);
            font-weight: 800;
            font-size: 1rem;
            letter-spacing: 0.5px;
            transition: 0.3s;
            text-decoration: none;
            display: inline-block;
            box-shadow: var(--shadow-blue);
        }
        
        .btn-primary-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 30px rgba(0, 82, 255, 0.8);
            color: #000;
        }
        /* Metrics Dashboard */
        
        .section-metrics {
            padding: 30px 0 70px;
            background: transparent;
        }
        
        .glass-card {
            background: rgba(13, 17, 30, 0.5);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--border-radius-card);
            padding: 24px 15px;
            transition: 0.3s;
            height: 100%;
            text-align: center;
        }
        
        .glass-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 25px rgba(0, 240, 255, 0.25);
            transform: translateY(-5px);
        }
        
        .metric-number {
            font-size: 2.8rem;
            font-weight: 800;
            background: var(--gradient-cyber);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        /* Service Matrix */
        
        .section-strategy {
            padding: 70px 0;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }
        
        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }
        
        .strategy-panel {
            background: var(--bg-card);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 82, 255, 0.25);
            border-radius: 16px;
            padding: 30px;
            height: 100%;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }
        
        .strategy-panel::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 40px;
            background: var(--gradient-cyber);
            border-radius: 0 0 4px 0;
        }
        
        .strategy-panel:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 30px rgba(0, 82, 255, 0.3);
            transform: translateY(-5px);
        }
        
        .strategy-icon {
            font-size: 2.5rem;
            color: var(--accent-cyan);
            margin-bottom: 15px;
        }
        /* Result Comparison */
        
        .section-comparison {
            padding: 80px 0;
            background: transparent;
        }
        
        .comp-table-wrapper {
            background: rgba(13, 17, 30, 0.6);
            backdrop-filter: blur(10px);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 16px;
            overflow: hidden;
        }
        
        .comp-header {
            background: rgba(0, 82, 255, 0.2);
            padding: 20px;
            font-weight: 700;
            border-bottom: 1px solid rgba(0, 240, 255, 0.3);
        }
        
        .comp-row {
            display: flex;
            align-items: center;
            padding: 16px 20px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
            transition: 0.2s;
        }
        
        .comp-row:hover {
            background: rgba(0, 240, 255, 0.03);
        }
        
        .check-cyan {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }
        /* FAQ */
        
        .section-faq {
            padding: 70px 0 90px;
            background: var(--bg-secondary);
            border-top: 1px solid rgba(0, 82, 255, 0.15);
        }
        
        .accordion-custom .accordion-item {
            background: transparent;
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 12px !important;
            margin-bottom: 15px;
            overflow: hidden;
        }
        
        .accordion-custom .accordion-button {
            background: rgba(13, 17, 30, 0.7);
            color: #FFFFFF;
            font-weight: 700;
            box-shadow: none;
            padding: 18px 25px;
            border-radius: 12px !important;
        }
        
        .accordion-custom .accordion-button:not(.collapsed) {
            background: rgba(0, 82, 255, 0.2);
            color: var(--accent-cyan);
            box-shadow: none;
        }
        
        .accordion-custom .accordion-button::after {
            filter: brightness(0) invert(1);
        }
        
        .accordion-custom .accordion-body {
            background: rgba(8, 9, 15, 0.5);
            color: var(--text-secondary);
            padding: 20px 25px;
        }
        /* CTA Form */
        
        .section-cta {
            padding: 60px 0 80px;
            text-align: center;
        }
        
        .cta-card {
            background: linear-gradient(135deg, rgba(0, 82, 255, 0.2), rgba(0, 240, 255, 0.1));
            border: 1px solid var(--accent-cyan);
            border-radius: 24px;
            padding: 50px 25px;
            backdrop-filter: blur(10px);
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.2);
        }
        /* Footer */
        
        .footer-custom {
            background: rgba(8, 9, 15, 0.9);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 30px 0;
            text-align: center;
            color: var(--text-secondary);
        }
        /* FAB Left */
        
        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 1050;
            width: 55px;
            height: 55px;
            background: rgba(13, 17, 30, 0.8);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            border-radius: 50px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.45);
            transition: 0.3s;
            cursor: pointer;
            animation: breathe 2.5s infinite;
        }
        
        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.9);
        }
        
        @keyframes breathe {
            0%,
            100% {
                opacity: 0.7;
            }
            50% {
                opacity: 1;
            }
        }
        
        @media (max-width: 768px) {
            .navbar-brand {
                font-size: 1.2rem;
            }
            .hero-category {
                padding-top: 100px;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #08090F;
            --bg-secondary: #0D111E;
            --bg-card: #111827;
            --accent-blue: #0052FF;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #CBD5E1;
            --text-muted: #94A3B8;
            --border-color: #1E293B;
            --border-glow: rgba(0, 240, 255, 0.5);
            --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
            --shadow-glow: 0 0 15px rgba(0, 240, 255, 0.4);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 20px;
            --transition: all 0.3s ease;
        }

        * {
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background-color: var(--bg-primary);
            color: var(--text-primary);
            line-height: 1.6;
            margin: 0;
            overflow-x: hidden;
        }

        .container-custom {
            max-width: 1280px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* ---- Navbar ---- */
        .navbar-custom {
            background: rgba(8, 9, 15, 0.85);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-color);
            padding: 0.8rem 0;
            position: sticky;
            top: 0;
            z-index: 1020;
        }

        .navbar-brand {
            font-weight: 700;
            font-size: 1.25rem;
            color: var(--accent-cyan) !important;
            text-decoration: none;
            letter-spacing: -0.3px;
        }

        .nav-link-custom {
            color: var(--text-secondary) !important;
            font-weight: 500;
            font-size: 0.9rem;
            margin: 0 0.5rem;
            text-decoration: none;
            padding: 0.4rem 0.8rem;
            border-radius: 20px;
            transition: var(--transition);
        }

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

        .btn-outline-neon {
            background: transparent;
            border: 1px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-weight: 600;
            padding: 0.5rem 1.2rem;
            border-radius: 20px;
            font-size: 0.85rem;
            transition: var(--transition);
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.15);
            color: #fff;
        }

        .btn-primary-neon {
            background: var(--accent-blue);
            border: none;
            color: #fff;
            font-weight: 700;
            padding: 0.5rem 1.4rem;
            border-radius: 20px;
            font-size: 0.85rem;
            box-shadow: 0 0 12px rgba(0, 82, 255, 0.6);
            transition: var(--transition);
        }

        .btn-primary-neon:hover {
            background: #0040cc;
            box-shadow: 0 0 18px rgba(0, 82, 255, 0.9);
        }

        /* ---- Hero ---- */
        .hero-custom {
            background: radial-gradient(circle at 30% 40%, #0D111E, #08090F);
            padding: 3rem 1rem;
            border-bottom: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }

        .hero-badge {
            background: var(--accent-pink);
            display: inline-block;
            padding: 0.3rem 1rem;
            font-weight: 700;
            font-size: 0.8rem;
            border-radius: 20px;
            letter-spacing: 1px;
            margin-bottom: 1rem;
        }

        .hero-title {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
        }

        .hero-sub {
            color: var(--text-secondary);
            font-size: 1.1rem;
            margin-top: 1rem;
        }

        /* ---- Cards ---- */
        .card-custom {
            background: rgba(17, 24, 39, 0.8);
            backdrop-filter: blur(8px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-card);
            transition: var(--transition);
        }

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

        .tip-icon {
            font-size: 2.4rem;
            color: var(--accent-cyan);
        }

        .list-benefit li {
            list-style: none;
            margin-bottom: 0.6rem;
            color: var(--text-secondary);
        }

        .list-benefit i {
            color: var(--accent-cyan);
            width: 20px;
        }

        .stat-block {
            background: rgba(0, 240, 255, 0.05);
            padding: 1.2rem;
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-cyan);
        }

        .btn-cta-large {
            background: var(--accent-blue);
            color: #fff;
            font-weight: 700;
            padding: 0.9rem 2.5rem;
            border-radius: 30px;
            font-size: 1.1rem;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            transition: var(--transition);
            border: none;
        }

        .btn-cta-large:hover {
            background: #003bb3;
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.8);
        }

        /* FAQ */
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            margin-bottom: 0.8rem;
        }

        .faq-item .accordion-button {
            background: transparent;
            color: #fff;
            font-weight: 600;
            box-shadow: none;
        }

        .faq-item .accordion-button:not(.collapsed) {
            color: var(--accent-cyan);
        }

        .faq-item .accordion-body {
            color: var(--text-secondary);
        }

        /* FAB Left */
        .fab-left {
            position: fixed;
            left: 1.2rem;
            bottom: 6rem;
            z-index: 50;
            width: 52px;
            height: 52px;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, #0052FF, #00F0FF) 1;
            border-radius: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #00F0FF;
            font-size: 1.5rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.6);
            transition: 0.3s;
        }

        .fab-left:hover {
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.9);
        }

        /* Footer */
        .footer-custom {
            background: #0A0B14;
            border-top: 1px solid var(--border-color);
            padding: 2rem 1rem;
            color: var(--text-secondary);
        }

        @media (max-width: 768px) {
            .hero-title {
                font-size: 2rem;
            }
            .container-custom {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }