/* roulang page: index */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --surface: #132743;
            --surface-light: #1A3557;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-neon: rgba(0, 240, 255, 0.25);
            --shadow-neon: 0 0 18px rgba(0, 240, 255, 0.35);
            --shadow-lime: 0 0 14px rgba(204, 255, 0, 0.3);
            --radius-lg: 16px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --transition: all 0.25s ease;
        }

        * {
            box-sizing: border-box;
        }

        html, body {
            margin: 0;
            padding: 0;
            background: var(--primary-bg);
            color: var(--text-white);
            font-family: 'Segoe UI', 'Inter', system-ui, -apple-system, sans-serif;
            line-height: 1.6;
            scroll-behavior: smooth;
        }

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

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

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

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

        /* Header / Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border-neon);
            padding: 0;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .logo-brand {
            font-weight: 800;
            font-size: 1.15rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .logo-brand i {
            color: var(--accent-lime);
            font-size: 1.5rem;
        }

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

        .nav-links a {
            color: var(--text-silver);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
        }

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

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

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

        .btn-login {
            background: transparent;
            color: var(--accent-cyan);
            border: 1px solid var(--border-neon);
            padding: 8px 18px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .btn-login:hover {
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
        }

        .btn-signup {
            background: var(--accent-lime);
            color: var(--primary-bg);
            border: none;
            padding: 10px 22px;
            border-radius: 24px;
            font-weight: 700;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.25);
        }

        .btn-signup:hover {
            background: #e0ff4a;
            transform: translateY(-2px);
            box-shadow: 0 0 22px rgba(204, 255, 0, 0.45);
        }

        .nav-toggle {
            display: none;
            background: transparent;
            border: 1px solid var(--border-neon);
            color: var(--accent-cyan);
            font-size: 1.3rem;
            padding: 6px 12px;
            border-radius: 8px;
            cursor: pointer;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.96), rgba(11, 26, 48, 0.9)), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            padding: 80px 0 100px;
            border-bottom: 1px solid var(--border-neon);
        }

        .hero-grid {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 48px;
            align-items: center;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.12);
            border: 1px solid rgba(204, 255, 0, 0.4);
            color: var(--accent-lime);
            padding: 8px 18px;
            border-radius: 24px;
            font-weight: 600;
            font-size: 0.85rem;
            margin-bottom: 20px;
        }

        .hero-title {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            letter-spacing: -0.03em;
            margin-bottom: 20px;
            background: linear-gradient(135deg, #FFFFFF 60%, var(--accent-lime));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 560px;
        }

        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }

        .btn-primary {
            background: var(--accent-cyan);
            color: var(--primary-bg);
            border: none;
            padding: 14px 32px;
            border-radius: 32px;
            font-weight: 800;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-neon);
        }

        .btn-primary:hover {
            background: #66f5ff;
            transform: translateY(-3px);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.55);
        }

        .btn-outline {
            background: transparent;
            color: var(--accent-lime);
            border: 2px solid var(--accent-lime);
            padding: 12px 28px;
            border-radius: 32px;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
        }

        .btn-outline:hover {
            background: rgba(204, 255, 0, 0.1);
            box-shadow: 0 0 18px rgba(204, 255, 0, 0.35);
        }

        .hero-stats {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

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

        .hero-stat strong {
            font-size: 1.6rem;
            color: var(--accent-lime);
            font-weight: 800;
        }

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

        .hero-visual {
            background: rgba(19, 39, 67, 0.6);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-neon);
        }

        .hero-visual img {
            border-radius: var(--radius-md);
            margin-bottom: 20px;
        }

        .visual-kpi {
            display: flex;
            justify-content: space-between;
            gap: 16px;
        }

        .kpi-item {
            background: rgba(0, 0, 0, 0.3);
            padding: 16px;
            border-radius: var(--radius-sm);
            text-align: center;
            flex: 1;
        }

        .kpi-item strong {
            display: block;
            color: var(--accent-cyan);
            font-size: 1.3rem;
        }

        .kpi-item span {
            font-size: 0.75rem;
            color: var(--text-silver);
        }

        /* Section Common */
        .section-block {
            padding: 72px 0;
        }

        .section-heading {
            margin-bottom: 48px;
        }

        .section-heading h2 {
            font-size: 2.2rem;
            font-weight: 800;
            letter-spacing: -0.02em;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .section-heading p {
            font-size: 1.05rem;
            color: var(--text-silver);
            max-width: 680px;
            line-height: 1.6;
        }

        /* Progress Section */
        .progress-section {
            background: var(--secondary-bg);
        }

        .progress-panel {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 36px;
            border-left: 4px solid var(--accent-lime);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
        }

        .progress-bar-custom {
            background: rgba(255, 255, 255, 0.08);
            border-radius: 24px;
            height: 14px;
            overflow: hidden;
            margin: 18px 0 24px;
        }

        .progress-fill {
            height: 100%;
            width: 72%;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            border-radius: 24px;
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.5);
        }

        .progress-meta {
            display: flex;
            justify-content: space-between;
            color: var(--text-silver);
            font-weight: 600;
        }

        /* Reward Tiers */
        .tier-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .tier-card {
            background: var(--surface);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .tier-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
        }

        .tier-card.featured {
            border-color: var(--accent-lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.2);
        }

        .tier-badge {
            position: absolute;
            top: 16px;
            right: 16px;
            background: var(--accent-lime);
            color: var(--primary-bg);
            font-weight: 700;
            font-size: 0.7rem;
            padding: 4px 12px;
            border-radius: 16px;
            text-transform: uppercase;
        }

        .tier-card h3 {
            font-size: 1.4rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: var(--text-white);
        }

        .tier-price {
            font-size: 2rem;
            font-weight: 900;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .tier-card p {
            color: var(--text-silver);
            margin-bottom: 20px;
        }

        .tier-list {
            list-style: none;
            margin: 0 0 24px;
            padding: 0;
        }

        .tier-list li {
            padding: 8px 0;
            color: var(--text-silver);
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .tier-list li i {
            color: var(--accent-lime);
            font-size: 0.85rem;
        }

        /* Supporter Wall */
        .supporter-section {
            background: linear-gradient(180deg, var(--primary-bg), var(--secondary-bg));
        }

        .supporter-wall {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
        }

        .supporter-bubble {
            background: var(--surface);
            border: 1px solid rgba(0, 240, 255, 0.15);
            border-radius: var(--radius-md);
            padding: 22px;
            transition: var(--transition);
        }

        .supporter-bubble:hover {
            border-color: var(--accent-cyan);
            transform: scale(1.02);
        }

        .supporter-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: 12px;
        }

        .supporter-avatar {
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            color: var(--primary-bg);
        }

        .supporter-name {
            font-weight: 700;
            color: var(--text-white);
        }

        .supporter-comment {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        /* News / CMS List */
        .news-section {
            background: var(--primary-bg);
        }

        .news-layout {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 36px;
        }

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

        .news-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
            transition: var(--transition);
        }

        .news-item:hover {
            padding-left: 8px;
            border-bottom-color: var(--accent-cyan);
        }

        .news-item a {
            color: var(--text-white);
            font-weight: 600;
            font-size: 1rem;
            flex: 1;
        }

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

        .news-date {
            color: var(--text-silver);
            font-size: 0.8rem;
            white-space: nowrap;
        }

        .news-sidebar {
            background: var(--surface);
            border-radius: var(--radius-lg);
            padding: 28px;
            border: 1px solid var(--border-neon);
        }

        .news-sidebar h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 16px;
            color: var(--accent-lime);
        }

        .news-sidebar p {
            color: var(--text-silver);
            margin-bottom: 18px;
        }

        .sidebar-cta {
            background: var(--accent-lime);
            color: var(--primary-bg);
            border: none;
            padding: 12px 24px;
            border-radius: 28px;
            font-weight: 700;
            width: 100%;
            cursor: pointer;
            transition: var(--transition);
        }

        .sidebar-cta:hover {
            background: #e0ff4a;
            transform: translateY(-2px);
        }

        /* Support CTA */
        .support-cta {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.12), rgba(204, 255, 0, 0.08));
            border-top: 1px solid var(--border-neon);
            border-bottom: 1px solid var(--border-neon);
        }

        .support-cta-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }

        .support-cta h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 8px;
        }

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

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

        .faq-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-md);
            padding: 24px;
            border: 1px solid rgba(255, 255, 255, 0.06);
            transition: var(--transition);
        }

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

        .faq-item h3 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--accent-lime);
        }

        .faq-item p {
            color: var(--text-silver);
            margin: 0;
            line-height: 1.7;
        }

        /* Footer */
        .site-footer {
            background: #0A0A14;
            border-top: 1px solid var(--border-neon);
            padding: 48px 0 24px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr 0.8fr;
            gap: 40px;
            margin-bottom: 36px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 14px;
        }

        .footer-desc {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-col h4 {
            color: var(--accent-cyan);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 16px;
        }

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

        .footer-col li {
            margin-bottom: 10px;
        }

        .footer-col a {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 20px;
            text-align: center;
            color: var(--text-silver);
            font-size: 0.8rem;
        }

        /* FAB */
        .fab-left {
            position: fixed;
            left: 20px;
            bottom: 96px;
            z-index: 50;
            background: rgba(0, 0, 0, 0.65);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(0,0,0,0.65), rgba(0,0,0,0.65)), linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            border-radius: 32px;
            width: 56px;
            height: 56px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-lime);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.45);
            animation: fabPulse 2.8s infinite;
        }

        .fab-left:hover {
            transform: scale(1.1);
            color: var(--accent-cyan);
            box-shadow: 0 0 26px rgba(0, 240, 255, 0.7);
        }

        @keyframes fabPulse {
            0%, 100% { opacity: 0.65; }
            50% { opacity: 1; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .tier-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .supporter-wall {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-layout {
                grid-template-columns: 1fr;
            }
            .faq-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 68px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid var(--border-neon);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta-group {
                gap: 10px;
            }
            .btn-login, .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-title {
                font-size: 2.2rem;
            }
            .section-heading h2 {
                font-size: 1.7rem;
            }
            .tier-grid {
                grid-template-columns: 1fr;
            }
            .supporter-wall {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .container-custom {
                padding: 0 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.8rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-stats {
                gap: 16px;
            }
            .visual-kpi {
                flex-direction: column;
            }
            .progress-panel {
                padding: 20px;
            }
        }

/* roulang page: article */
:root {
            --primary-bg: #0F0C20;
            --secondary-bg: #0B1A30;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --card-bg: rgba(18, 22, 40, 0.85);
            --card-border: rgba(204, 255, 0, 0.25);
            --radius-lg: 18px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.35);
            --shadow-lime: 0 0 15px rgba(204, 255, 0, 0.3);
            --transition: all 0.25s ease;
            --font-main: 'Be Vietnam Pro', sans-serif;
            --max-width: 1280px;
            --gap-section: 72px;
            --gap-inner: 32px;
        }

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

        body {
            font-family: var(--font-main);
            background: linear-gradient(160deg, var(--primary-bg) 0%, var(--secondary-bg) 100%);
            color: var(--text-white);
            line-height: 1.6;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

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

        button,
        .button {
            cursor: pointer;
            font-family: var(--font-main);
            border: none;
            outline: none;
            transition: var(--transition);
        }

        button:focus-visible,
        a:focus-visible,
        input:focus-visible {
            outline: 3px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        /* Header & Navigation */
        .site-header {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(14px);
            -webkit-backdrop-filter: blur(14px);
            border-bottom: 1px solid rgba(204, 255, 0, 0.2);
            position: sticky;
            top: 0;
            z-index: 100;
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.45);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 76px;
            gap: 20px;
            flex-wrap: wrap;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--text-white);
            letter-spacing: -0.02em;
            white-space: nowrap;
        }

        .logo-brand i {
            color: var(--accent-lime);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px rgba(204, 255, 0, 0.7));
        }

        .logo-brand span {
            background: linear-gradient(135deg, #fff 20%, var(--accent-cyan) 80%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .nav-toggle {
            display: none;
            background: rgba(204, 255, 0, 0.1);
            border: 1px solid rgba(204, 255, 0, 0.4);
            color: var(--accent-lime);
            font-size: 1.6rem;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            align-items: center;
            justify-content: center;
        }

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

        .nav-links a {
            display: inline-block;
            padding: 10px 18px;
            border-radius: 40px;
            font-weight: 600;
            font-size: 0.98rem;
            color: var(--text-silver);
            white-space: nowrap;
            border: 1px solid transparent;
        }

        .nav-links a:hover {
            color: var(--accent-lime);
            border-color: rgba(204, 255, 0, 0.35);
            background: rgba(204, 255, 0, 0.05);
        }

        .nav-links a.active {
            color: var(--accent-lime);
            border-color: rgba(204, 255, 0, 0.5);
            background: rgba(204, 255, 0, 0.08);
            box-shadow: var(--shadow-lime);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            margin-left: auto;
        }

        .btn-login {
            color: var(--text-white);
            font-weight: 700;
            font-size: 0.95rem;
            padding: 10px 18px;
            border-radius: 40px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
        }

        .btn-login:hover {
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #0F0C20;
            font-weight: 800;
            font-size: 0.95rem;
            padding: 10px 22px;
            border-radius: 40px;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            border: none;
        }

        .btn-signup:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 25px rgba(204, 255, 0, 0.6);
            color: #0F0C20;
        }

        /* Article Page Hero / Header */
        .article-hero {
            padding: 56px 0 32px;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            position: relative;
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.78) 0%, rgba(11, 26, 48, 0.94) 100%);
        }

        .article-hero-content {
            position: relative;
            z-index: 1;
            max-width: 920px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.12);
            border: 1px solid rgba(204, 255, 0, 0.4);
            color: var(--accent-lime);
            padding: 8px 18px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.85rem;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .article-category-badge i {
            color: var(--accent-cyan);
        }

        .article-hero h1 {
            font-size: clamp(2rem, 5vw, 3.2rem);
            font-weight: 800;
            line-height: 1.2;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: var(--text-white);
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 18px;
            color: var(--text-silver);
            font-size: 0.95rem;
            align-items: center;
        }

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-meta i {
            color: var(--accent-cyan);
        }

        /* Article Body Layout */
        .article-body-section {
            padding: 48px 0 72px;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 300px;
            gap: 48px;
            align-items: start;
        }

        .article-main {
            max-width: 820px;
            min-width: 0;
        }

        .article-featured-img {
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 36px;
            border: 1px solid rgba(0, 240, 255, 0.25);
            box-shadow: 0 18px 40px rgba(0, 0, 0, 0.5);
        }

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

        .article-content {
            color: #D1D5DB;
            font-size: 1.06rem;
            line-height: 1.75;
        }

        .article-content h2 {
            font-size: 1.8rem;
            font-weight: 800;
            color: var(--text-white);
            margin-top: 42px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
            line-height: 1.3;
        }

        .article-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--accent-lime);
            margin-top: 30px;
            margin-bottom: 12px;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 0 0 20px 22px;
            padding-left: 8px;
        }

        .article-content li {
            margin-bottom: 10px;
        }

        .article-content strong {
            color: var(--accent-cyan);
            font-weight: 700;
        }

        .article-content a {
            color: var(--accent-cyan);
            text-decoration: underline;
            text-underline-offset: 4px;
            font-weight: 600;
        }

        .article-content a:hover {
            color: var(--accent-lime);
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            border: 1px solid rgba(255, 255, 255, 0.1);
        }

        .article-content blockquote {
            background: rgba(0, 240, 255, 0.05);
            border-left: 4px solid var(--accent-cyan);
            padding: 18px 22px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            color: var(--text-silver);
            font-style: italic;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-widget {
            background: rgba(18, 22, 40, 0.75);
            backdrop-filter: blur(8px);
            border: 1px solid rgba(0, 240, 255, 0.18);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
        }

        .sidebar-widget h4 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--accent-lime);
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

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

        .sidebar-widget ul li {
            margin-bottom: 12px;
            padding-left: 20px;
            position: relative;
            font-size: 0.95rem;
            color: var(--text-silver);
        }

        .sidebar-widget ul li::before {
            content: '\f105';
            font-family: 'Font Awesome 6 Free';
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 2px;
            color: var(--accent-cyan);
        }

        .sidebar-widget ul li a {
            color: var(--text-silver);
            font-weight: 500;
        }

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

        .sidebar-cta-box {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.12), rgba(0, 240, 255, 0.08));
            border: 1px solid rgba(204, 255, 0, 0.35);
            text-align: left;
        }

        .sidebar-cta-box h4 {
            font-size: 1.3rem;
            margin-bottom: 8px;
        }

        .sidebar-cta-box p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }

        .sidebar-cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #0F0C20;
            font-weight: 800;
            padding: 12px 20px;
            border-radius: 40px;
            font-size: 0.9rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.35);
        }

        .sidebar-cta-btn:hover {
            transform: translateY(-2px);
            color: #0F0C20;
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.55);
        }

        .article-not-found {
            background: rgba(18, 22, 40, 0.8);
            border: 1px solid rgba(255, 0, 0, 0.3);
            border-radius: var(--radius-lg);
            padding: 48px 32px;
            text-align: center;
            max-width: 680px;
            margin: 0 auto;
        }

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

        .article-not-found h2 {
            font-size: 1.8rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

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

        /* Shared CTA Section */
        .cta-section {
            padding: 72px 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            position: relative;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            border-bottom: 1px solid rgba(204, 255, 0, 0.2);
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.92), rgba(11, 26, 48, 0.88));
        }

        .cta-inner {
            position: relative;
            z-index: 1;
            max-width: 720px;
            margin: 0 auto;
            text-align: center;
        }

        .cta-inner h2 {
            font-size: clamp(1.8rem, 4vw, 2.6rem);
            font-weight: 800;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .cta-inner p {
            color: var(--text-silver);
            font-size: 1.1rem;
            margin-bottom: 32px;
        }

        .cta-btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: #0F0C20;
            font-weight: 800;
            font-size: 1.05rem;
            padding: 16px 36px;
            border-radius: 50px;
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.45);
            border: none;
        }

        .cta-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 40px rgba(204, 255, 0, 0.65);
            color: #0F0C20;
        }

        /* Footer */
        .site-footer {
            background: #0A0818;
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 56px 0 28px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--accent-lime);
            margin-bottom: 14px;
        }

        .footer-desc {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 420px;
        }

        .footer-col h4 {
            color: var(--text-white);
            font-size: 1.1rem;
            font-weight: 800;
            margin-bottom: 16px;
        }

        .footer-col ul {
            list-style: none;
            margin: 0;
        }

        .footer-col ul li {
            margin-bottom: 10px;
        }

        .footer-col ul li a {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

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

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

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0F0C20, #1A1F3A);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-lime);
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            opacity: 0.7;
            transition: var(--transition);
            animation: fabBreathe 3s ease-in-out infinite;
        }

        .fab-support:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.7);
        }

        .fab-support::after {
            content: '';
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid #0F0C20;
            animation: blinkDot 1.4s infinite;
        }

        @keyframes fabBreathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 0.85; }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                align-items: stretch;
                width: 100%;
                background: rgba(15, 12, 32, 0.98);
                padding: 16px;
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                border: 1px solid rgba(204, 255, 0, 0.25);
                position: absolute;
                top: 76px;
                left: 0;
                right: 0;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 14px 18px;
                border-radius: var(--radius-sm);
            }
            .nav-cta-group {
                gap: 6px;
            }
            .btn-login,
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.85rem;
            }
            .article-body-section {
                padding: 36px 0 56px;
            }
            .article-hero {
                padding: 36px 0 24px;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .cta-section {
                padding: 48px 0;
            }
            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.3rem;
                left: 12px;
                bottom: 80px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 16px;
            }
            .nav-wrapper {
                min-height: 64px;
                gap: 10px;
            }
            .logo-brand {
                font-size: 1.05rem;
                gap: 6px;
            }
            .logo-brand i {
                font-size: 1.3rem;
            }
            .btn-login {
                display: none;
            }
            .btn-signup {
                padding: 8px 14px;
                font-size: 0.8rem;
            }
            .article-hero h1 {
                font-size: 1.7rem;
            }
            .article-content {
                font-size: 0.98rem;
            }
            .article-content h2 {
                font-size: 1.4rem;
            }
            .article-content h3 {
                font-size: 1.15rem;
            }
        }

/* roulang page: category1 */
:root {
            --primary-bg: #0B1A30;
            --secondary-bg: #0F0C20;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --border-neon: rgba(0, 240, 255, 0.35);
            --radius-card: 16px;
            --radius-btn: 10px;
            --shadow-neon: 0 0 15px rgba(0, 240, 255, 0.5);
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.45);
            --spacing-section: 5rem;
            --font-heading: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            --font-body: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: linear-gradient(135deg, var(--secondary-bg) 0%, var(--primary-bg) 100%);
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
        }

        a {
            color: inherit;
            text-decoration: none;
            transition: all 0.3s ease;
        }

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

        button, input {
            font-family: inherit;
        }

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

        /* ========== HEADER ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.18);
            padding: 0.85rem 0;
            transition: all 0.3s ease;
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 1.5rem;
            flex-wrap: wrap;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 0.65rem;
            font-weight: 800;
            font-size: 1.3rem;
            color: var(--text-white);
            letter-spacing: -0.01em;
            transition: color 0.3s;
        }

        .logo-brand i {
            color: var(--accent-cyan);
            font-size: 1.8rem;
            filter: drop-shadow(0 0 6px rgba(0, 240, 255, 0.6));
        }

        .logo-brand:hover {
            color: var(--accent-lime);
        }

        .nav-links {
            display: flex;
            list-style: none;
            gap: 1.75rem;
            margin: 0;
        }

        .nav-links li a {
            display: inline-block;
            padding: 0.5rem 0.15rem;
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--text-silver);
            position: relative;
            transition: color 0.25s;
        }

        .nav-links li a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(0, 240, 255, 0.7);
        }

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

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

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .btn-login,
        .btn-signup {
            padding: 0.55rem 1.25rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 0.9rem;
            letter-spacing: 0.02em;
            transition: all 0.3s ease;
            cursor: pointer;
            white-space: nowrap;
        }

        .btn-login {
            background: transparent;
            color: var(--text-white);
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.25);
        }

        .btn-signup {
            background: var(--accent-cyan);
            color: #0B1A30;
            border: none;
            box-shadow: 0 0 14px rgba(0, 240, 255, 0.45);
        }

        .btn-signup:hover {
            background: var(--accent-lime);
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.55);
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: var(--text-white);
            font-size: 1.5rem;
            padding: 0.35rem 0.75rem;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s;
        }

        .nav-toggle:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        /* ========== HERO ========== */
        .hero-category {
            padding: 9rem 0 4.5rem;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat fixed;
            position: relative;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.92) 0%, rgba(11, 26, 48, 0.85) 100%);
        }

        .hero-category .container-custom {
            position: relative;
            z-index: 2;
        }

        .hero-grid-category {
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 3rem;
            align-items: center;
        }

        .hero-text-category h1 {
            font-size: 3.1rem;
            font-weight: 900;
            line-height: 1.18;
            margin-bottom: 1.25rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        .hero-text-category h1 span {
            color: var(--accent-cyan);
            text-shadow: 0 0 18px rgba(0, 240, 255, 0.55);
        }

        .hero-text-category p.hero-sub {
            font-size: 1.2rem;
            color: var(--text-silver);
            margin-bottom: 2rem;
            max-width: 560px;
            line-height: 1.7;
        }

        .hero-cta-group {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            margin-bottom: 2.2rem;
        }

        .btn-primary-cyan {
            background: var(--accent-cyan);
            color: #0B1A30;
            padding: 0.85rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 800;
            font-size: 1rem;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.5);
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-primary-cyan:hover {
            background: var(--accent-lime);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.6);
            transform: translateY(-2px);
        }

        .btn-outline-cyan {
            background: transparent;
            color: var(--accent-cyan);
            padding: 0.85rem 2rem;
            border-radius: var(--radius-btn);
            font-weight: 700;
            font-size: 1rem;
            border: 2px solid var(--accent-cyan);
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.6rem;
        }

        .btn-outline-cyan:hover {
            background: rgba(0, 240, 255, 0.12);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.3);
        }

        .hero-stats-row {
            display: flex;
            gap: 2.5rem;
            flex-wrap: wrap;
        }

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

        .hero-stat-number {
            font-size: 1.8rem;
            font-weight: 900;
            color: var(--accent-lime);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-silver);
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

        .hero-visual-category {
            background: rgba(15, 12, 32, 0.75);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-card);
            padding: 2rem;
            backdrop-filter: blur(8px);
            box-shadow: var(--shadow-card);
        }

        .hero-visual-category h3 {
            font-size: 1.3rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .time-slot-list {
            display: flex;
            flex-direction: column;
            gap: 0.85rem;
            margin-bottom: 1.75rem;
        }

        .time-slot-item {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0.85rem 1.1rem;
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            transition: all 0.3s;
        }

        .time-slot-item:hover {
            border-color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
            transform: translateX(4px);
        }

        .time-slot-item .slot-day {
            font-weight: 700;
            color: var(--text-white);
        }

        .time-slot-item .slot-status {
            font-size: 0.8rem;
            font-weight: 700;
            color: var(--accent-lime);
            background: rgba(204, 255, 0, 0.12);
            padding: 0.2rem 0.7rem;
            border-radius: 20px;
        }

        /* ========== MAIN SECTIONS ========== */
        .section {
            padding: var(--spacing-section) 0;
        }

        .section-alt {
            background: rgba(255, 255, 255, 0.02);
            border-top: 1px solid rgba(255, 255, 255, 0.05);
            border-bottom: 1px solid rgba(255, 255, 255, 0.05);
        }

        .section-heading {
            font-size: 2.3rem;
            font-weight: 900;
            margin-bottom: 1rem;
            color: var(--text-white);
            line-height: 1.25;
            letter-spacing: -0.01em;
        }

        .section-subheading {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 680px;
            margin-bottom: 2.8rem;
            line-height: 1.7;
        }

        .section-heading .highlight {
            color: var(--accent-cyan);
            text-shadow: 0 0 12px rgba(0, 240, 255, 0.45);
        }

        .platform-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.8rem;
            margin-top: 2rem;
        }

        .platform-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-card);
            padding: 2rem 1.75rem;
            transition: all 0.35s ease;
            position: relative;
            overflow: hidden;
        }

        .platform-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
            opacity: 0;
            transition: opacity 0.35s;
        }

        .platform-card:hover {
            transform: translateY(-8px);
            border-color: var(--border-neon);
            box-shadow: var(--shadow-card);
        }

        .platform-card:hover::before {
            opacity: 1;
        }

        .platform-card .platform-icon {
            width: 60px;
            height: 60px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
        }

        .platform-card h3 {
            font-size: 1.35rem;
            font-weight: 800;
            margin-bottom: 0.7rem;
            color: var(--text-white);
        }

        .platform-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            margin-bottom: 1.2rem;
        }

        .platform-tag {
            display: inline-block;
            background: rgba(204, 255, 0, 0.12);
            color: var(--accent-lime);
            font-size: 0.78rem;
            font-weight: 700;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        /* Comparison Table */
        .comparison-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-card);
            border: 1px solid rgba(255, 255, 255, 0.1);
            margin-top: 1.5rem;
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 760px;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 1.1rem 1.5rem;
            text-align: left;
            border-bottom: 1px solid rgba(255, 255, 255, 0.08);
        }

        .comparison-table th {
            background: rgba(0, 240, 255, 0.07);
            font-weight: 800;
            color: var(--accent-cyan);
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
        }

        .comparison-table td {
            color: var(--text-silver);
            font-size: 0.95rem;
        }

        .comparison-table td strong {
            color: var(--text-white);
        }

        .comparison-table tr:hover td {
            background: rgba(255, 255, 255, 0.02);
        }

        .badge-green {
            display: inline-block;
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            padding: 0.2rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        .badge-cyan {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            padding: 0.2rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
        }

        /* Feature List */
        .feature-list-horizontal {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
            margin-top: 1.5rem;
        }

        .feature-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.08);
            border-radius: var(--radius-card);
            padding: 1.75rem 1.5rem;
            transition: all 0.3s;
        }

        .feature-item:hover {
            border-color: var(--border-neon);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.12);
            transform: translateY(-4px);
        }

        .feature-item i {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
        }

        .feature-item h4 {
            font-size: 1.15rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 0.6rem;
        }

        .feature-item p {
            font-size: 0.9rem;
            color: var(--text-silver);
            line-height: 1.65;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            margin-top: 1.5rem;
            max-width: 860px;
        }

        .faq-item {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: 12px;
            overflow: hidden;
            transition: all 0.3s;
        }

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

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 1.25rem 1.5rem;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.05rem;
            text-align: left;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color 0.3s;
        }

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

        .faq-question i {
            transition: transform 0.35s ease;
            color: var(--accent-cyan);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 0 1.5rem;
        }

        .faq-answer.show {
            max-height: 500px;
            padding: 0 1.5rem 1.25rem;
        }

        /* CTA Section */
        .cta-section {
            padding: 5rem 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat fixed;
            position: relative;
            text-align: center;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: rgba(15, 12, 32, 0.85);
        }

        .cta-section .container-custom {
            position: relative;
            z-index: 2;
        }

        .cta-section h2 {
            font-size: 2.6rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 1rem;
        }

        .cta-section p {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 640px;
            margin: 0 auto 2rem;
            line-height: 1.7;
        }

        /* ========== FAB ========== */
        .floating-fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 999;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.8);
            backdrop-filter: blur(10px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all 0.35s ease;
            opacity: 0.6;
            animation: fabBreathe 3s ease-in-out infinite;
            box-shadow: 0 0 15px rgba(0, 240, 255, 0.5);
            text-decoration: none;
        }

        .floating-fab::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan), var(--accent-lime));
            z-index: -1;
            background-size: 300% 300%;
            animation: borderFlow 4s linear infinite;
        }

        .floating-fab i {
            font-size: 1.6rem;
            color: var(--accent-cyan);
            transition: all 0.35s;
        }

        .floating-fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 28px rgba(0, 240, 255, 0.75);
        }

        .floating-fab:hover i {
            color: var(--accent-lime);
            animation: iconSpin 0.5s ease;
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: #FF007F;
            border-radius: 50%;
            border: 2px solid var(--secondary-bg);
            animation: blinkNotif 1.2s ease-in-out infinite;
        }

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

        @keyframes borderFlow {
            0% { background-position: 0% 50%; }
            50% { background-position: 100% 50%; }
            100% { background-position: 0% 50%; }
        }

        @keyframes iconSpin {
            0% { transform: rotate(0deg); }
            100% { transform: rotate(360deg); }
        }

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

        /* ========== FOOTER ========== */
        .site-footer {
            background: #0A0815;
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding: 4rem 0 2rem;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr;
            gap: 3rem;
            margin-bottom: 3rem;
        }

        .footer-brand {
            font-size: 1.5rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 0.85rem;
            letter-spacing: -0.01em;
        }

        .footer-desc {
            color: var(--text-silver);
            font-size: 0.92rem;
            line-height: 1.7;
            max-width: 420px;
        }

        .footer-col h4 {
            font-size: 1.05rem;
            font-weight: 800;
            color: var(--accent-cyan);
            margin-bottom: 1.2rem;
            letter-spacing: 0.02em;
        }

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

        .footer-col ul li {
            margin-bottom: 0.75rem;
        }

        .footer-col ul li a {
            color: var(--text-silver);
            font-size: 0.9rem;
            transition: color 0.3s, padding-left 0.3s;
        }

        .footer-col ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 6px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            padding-top: 1.75rem;
            text-align: center;
            color: var(--text-silver);
            font-size: 0.85rem;
        }

        /* ========== RESPONSIVE ========== */
        @media (max-width: 1024px) {
            .platform-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .hero-grid-category {
                grid-template-columns: 1fr;
                gap: 2.5rem;
            }

            .hero-text-category h1 {
                font-size: 2.5rem;
            }
        }

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

            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(15, 12, 32, 0.98);
                backdrop-filter: blur(12px);
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid rgba(0, 240, 255, 0.2);
                z-index: 999;
            }

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

            .nav-cta-group {
                display: flex;
            }

            .btn-login,
            .btn-signup {
                padding: 0.45rem 1rem;
                font-size: 0.82rem;
            }

            .hero-category {
                padding: 7.5rem 0 3.5rem;
            }

            .hero-text-category h1 {
                font-size: 2.1rem;
            }

            .section {
                padding: 3.5rem 0;
            }

            .section-heading {
                font-size: 1.8rem;
            }

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

            .feature-list-horizontal {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 2rem;
            }

            .hero-stats-row {
                gap: 1.5rem;
            }

            .floating-fab {
                left: 1rem;
                bottom: 5rem;
                width: 50px;
                height: 50px;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 1rem;
            }

            .nav-wrapper {
                gap: 0.8rem;
            }

            .logo-brand {
                font-size: 1.05rem;
            }

            .logo-brand i {
                font-size: 1.4rem;
            }

            .nav-cta-group {
                gap: 0.5rem;
            }

            .btn-login,
            .btn-signup {
                padding: 0.4rem 0.8rem;
                font-size: 0.78rem;
            }

            .hero-text-category h1 {
                font-size: 1.7rem;
            }

            .hero-text-category p.hero-sub {
                font-size: 1rem;
            }

            .hero-visual-category {
                padding: 1.25rem;
            }

            .section-heading {
                font-size: 1.5rem;
            }

            .cta-section h2 {
                font-size: 1.8rem;
            }

            .comparison-table th,
            .comparison-table td {
                padding: 0.85rem 0.9rem;
                font-size: 0.82rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #CCFF00;
            --primary-dark: #9ECC00;
            --accent: #00F0FF;
            --accent-dark: #00B8CC;
            --bg: #0F0C20;
            --bg-alt: #0B1A30;
            --surface: #1A1535;
            --surface-light: #241E45;
            --text: #FFFFFF;
            --text-muted: #A6ACAF;
            --border: rgba(204, 255, 0, 0.2);
            --radius: 16px;
            --radius-sm: 8px;
            --shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.3);
            --transition: all 0.25s ease;
            --font-main: 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, Roboto, 'Helvetica Neue', sans-serif;
            --container-max: 1200px;
        }

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

        body {
            font-family: var(--font-main);
            background: var(--bg);
            color: var(--text);
            line-height: 1.6;
            font-size: 16px;
            min-height: 100vh;
            overflow-x: hidden;
        }

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

        a:hover {
            color: var(--primary);
        }

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

        .container-custom {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Header / Navigation */
        .site-header {
            background: rgba(15, 12, 32, 0.95);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            position: sticky;
            top: 0;
            z-index: 100;
            transition: var(--transition);
        }

        .nav-wrapper {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 72px;
            gap: 20px;
        }

        .logo-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text);
            font-weight: 800;
            font-size: 1.2rem;
            white-space: nowrap;
        }

        .logo-brand i {
            color: var(--primary);
            font-size: 1.6rem;
        }

        .logo-brand span {
            letter-spacing: -0.02em;
        }

        .logo-brand:hover {
            color: var(--primary);
        }

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

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            border-radius: 50px;
            color: var(--text-muted);
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition);
            position: relative;
        }

        .nav-links li a:hover,
        .nav-links li a.active {
            color: var(--primary);
            background: rgba(204, 255, 0, 0.08);
        }

        .nav-cta-group {
            display: flex;
            align-items: center;
            gap: 10px;
            white-space: nowrap;
        }

        .btn-login {
            padding: 8px 18px;
            border-radius: 50px;
            color: var(--text);
            font-weight: 700;
            font-size: 0.9rem;
            transition: var(--transition);
            border: 1px solid var(--border);
        }

        .btn-login:hover {
            color: var(--accent);
            border-color: var(--accent);
            background: rgba(0, 240, 255, 0.05);
        }

        .btn-signup {
            padding: 8px 20px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--bg);
            font-weight: 800;
            font-size: 0.9rem;
            transition: var(--transition);
            box-shadow: 0 0 15px rgba(204, 255, 0, 0.3);
        }

        .btn-signup:hover {
            background: var(--accent);
            color: var(--bg);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            transform: translateY(-2px);
        }

        .nav-toggle {
            display: none;
            background: none;
            border: 1px solid var(--border);
            color: var(--text);
            font-size: 1.4rem;
            padding: 8px 14px;
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
        }

        .nav-toggle:hover {
            border-color: var(--primary);
            color: var(--primary);
        }

        /* Hero Section */
        .hero-section {
            padding: 80px 0 60px;
            background: linear-gradient(135deg, var(--bg) 0%, var(--bg-alt) 100%);
            position: relative;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.08), transparent 70%);
            pointer-events: none;
        }

        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
            position: relative;
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(204, 255, 0, 0.1);
            color: var(--primary);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.03em;
            margin-bottom: 20px;
            border: 1px solid rgba(204, 255, 0, 0.3);
        }

        .hero-text h1 {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.15;
            margin-bottom: 20px;
            letter-spacing: -0.02em;
        }

        .hero-text h1 .highlight {
            color: var(--primary);
        }

        .hero-text p {
            font-size: 1.15rem;
            color: var(--text-muted);
            margin-bottom: 30px;
            max-width: 500px;
        }

        .hero-actions {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }

        .btn-primary {
            padding: 14px 30px;
            border-radius: 50px;
            background: var(--primary);
            color: var(--bg);
            font-weight: 800;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            box-shadow: 0 0 20px rgba(204, 255, 0, 0.35);
        }

        .btn-primary:hover {
            background: var(--accent);
            color: var(--bg);
            box-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
            transform: translateY(-3px);
        }

        .btn-secondary {
            padding: 14px 28px;
            border-radius: 50px;
            background: transparent;
            color: var(--text);
            font-weight: 700;
            font-size: 1rem;
            transition: var(--transition);
            border: 1px solid var(--border);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-secondary:hover {
            border-color: var(--accent);
            color: var(--accent);
            background: rgba(0, 240, 255, 0.05);
        }

        .hero-visual {
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .hero-visual img {
            border-radius: var(--radius);
            box-shadow: var(--shadow-neon);
            border: 2px solid rgba(0, 240, 255, 0.3);
            max-height: 420px;
            object-fit: cover;
            width: 100%;
        }

        /* Stats Bar */
        .stats-bar {
            display: flex;
            gap: 30px;
            margin-top: 40px;
            flex-wrap: wrap;
            padding-top: 30px;
            border-top: 1px solid var(--border);
        }

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

        .stat-number {
            font-size: 2rem;
            font-weight: 900;
            color: var(--primary);
            display: block;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-muted);
            letter-spacing: 0.02em;
        }

        /* Section Base */
        .section {
            padding: 60px 0;
        }

        .section-alt {
            background: var(--bg-alt);
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 900;
            margin-bottom: 15px;
            letter-spacing: -0.02em;
        }

        .section-subtitle {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 40px;
            max-width: 700px;
            line-height: 1.6;
        }

        .section-header {
            text-align: left;
            margin-bottom: 40px;
        }

        /* Security Tips Grid */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .tip-card {
            background: var(--surface);
            border-radius: var(--radius);
            padding: 30px;
            border: 1px solid var(--border);
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .tip-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--accent));
            opacity: 0;
            transition: var(--transition);
        }

        .tip-card:hover {
            border-color: var(--accent);
            transform: translateY(-5px);
            box-shadow: var(--shadow-neon);
        }

        .tip-card:hover::before {
            opacity: 1;
        }

        .tip-icon {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            background: rgba(204, 255, 0, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--primary);
            margin-bottom: 18px;
        }

        .tip-card h3 {
            font-size: 1.2rem;
            font-weight: 800;
            margin-bottom: 12px;
        }

        .tip-card p {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Comparison Table */
        .comparison-wrapper {
            overflow-x: auto;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            background: var(--surface);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 700px;
        }

        .comparison-table th,
        .comparison-table td {
            padding: 16px 20px;
            text-align: left;
            border-bottom: 1px solid var(--border);
            font-size: 0.95rem;
        }

        .comparison-table th {
            background: var(--surface-light);
            color: var(--primary);
            font-weight: 800;
            font-size: 0.9rem;
            letter-spacing: 0.03em;
            white-space: nowrap;
        }

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

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

        .check-icon {
            color: var(--primary);
            font-weight: 700;
        }

        .cross-icon {
            color: #FF5252;
            font-weight: 700;
        }

        /* Steps Flow */
        .steps-flow {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 25px;
        }

        .step-item {
            text-align: left;
            padding: 25px;
            background: var(--surface);
            border-radius: var(--radius);
            border: 1px solid var(--border);
            position: relative;
            transition: var(--transition);
        }

        .step-item:hover {
            border-color: var(--primary);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--bg);
            font-weight: 900;
            font-size: 1.1rem;
            margin-bottom: 15px;
        }

        .step-item h4 {
            font-size: 1.05rem;
            font-weight: 800;
            margin-bottom: 10px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-list {
            max-width: 800px;
        }

        .faq-item {
            background: var(--surface);
            border-radius: var(--radius-sm);
            margin-bottom: 15px;
            border: 1px solid var(--border);
            overflow: hidden;
            transition: var(--transition);
        }

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

        .faq-question {
            width: 100%;
            text-align: left;
            background: none;
            border: none;
            color: var(--text);
            font-weight: 800;
            font-size: 1rem;
            padding: 20px 25px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 15px;
            transition: var(--transition);
        }

        .faq-question:hover {
            color: var(--primary);
        }

        .faq-question i {
            transition: var(--transition);
            color: var(--accent);
        }

        .faq-answer {
            padding: 0 25px 20px;
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            display: none;
        }

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

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

        /* CTA Section */
        .cta-section {
            background: linear-gradient(135deg, var(--surface) 0%, var(--bg-alt) 100%);
            border-radius: var(--radius);
            padding: 60px;
            text-align: left;
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            top: -30%;
            right: -5%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.1), transparent 70%);
            pointer-events: none;
        }

        .cta-section h2 {
            font-size: 2.4rem;
            font-weight: 900;
            margin-bottom: 15px;
            letter-spacing: -0.02em;
        }

        .cta-section p {
            font-size: 1.1rem;
            color: var(--text-muted);
            margin-bottom: 30px;
            max-width: 600px;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            padding: 60px 0 30px;
            margin-top: 60px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            font-size: 1.3rem;
            font-weight: 900;
            margin-bottom: 15px;
            color: var(--text);
        }

        .footer-desc {
            color: var(--text-muted);
            font-size: 0.95rem;
            line-height: 1.7;
            max-width: 400px;
        }

        .footer-col h4 {
            font-size: 1rem;
            font-weight: 800;
            margin-bottom: 18px;
            color: var(--primary);
        }

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

        .footer-col ul li {
            margin-bottom: 10px;
        }

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

        .footer-col ul li a:hover {
            color: var(--accent);
            padding-left: 5px;
        }

        .footer-bottom {
            border-top: 1px solid var(--border);
            padding-top: 25px;
            text-align: left;
            color: var(--text-muted);
            font-size: 0.85rem;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(8px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent);
            font-size: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            animation: fab-breathe 3s ease-in-out infinite;
        }

        .fab-float:hover {
            transform: scale(1.1);
            color: var(--primary);
            box-shadow: 0 0 30px rgba(204, 255, 0, 0.5);
        }

        @keyframes fab-breathe {
            0%, 100% { opacity: 0.6; }
            50% { opacity: 1; }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-text h1 {
                font-size: 2.4rem;
            }
            .cta-section {
                padding: 40px;
            }
        }

        @media (max-width: 768px) {
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                position: absolute;
                top: 72px;
                left: 0;
                right: 0;
                background: rgba(15, 12, 32, 0.98);
                flex-direction: column;
                padding: 20px;
                gap: 10px;
                border-bottom: 1px solid var(--border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-cta-group {
                gap: 6px;
            }
            .btn-login {
                padding: 6px 12px;
                font-size: 0.8rem;
            }
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .hero-text p {
                font-size: 1rem;
            }
            .hero-visual img {
                max-height: 300px;
            }
            .section-title {
                font-size: 1.8rem;
            }
            .cta-section h2 {
                font-size: 1.8rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 30px;
            }
            .stats-bar {
                gap: 20px;
            }
            .stat-number {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .container-custom {
                padding: 0 15px;
            }
            .logo-brand span {
                font-size: 0.9rem;
            }
            .nav-cta-group .btn-login {
                display: none;
            }
            .hero-text h1 {
                font-size: 1.6rem;
            }
            .hero-actions {
                flex-direction: column;
            }
            .btn-primary, .btn-secondary {
                width: 100%;
                justify-content: center;
            }
            .cta-section {
                padding: 30px 20px;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .steps-flow {
                grid-template-columns: 1fr;
            }
            .fab-float {
                left: 10px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
            }
        }