/* roulang page: index */
:root {
            --primary-deep: #0B1A30;
            --primary-dark: #0F0C20;
            --primary-bg: #0F0C20;
            --primary-surface: #16203a;
            --primary-surface-light: #1e2c4a;
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --accent-gold: #FFD700;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #6C757D;
            --border-glow: rgba(0, 240, 255, 0.25);
            --border-glow-strong: rgba(0, 240, 255, 0.6);
            --shadow-neon: 0 0 20px rgba(0, 240, 255, 0.25);
            --shadow-neon-hover: 0 0 35px rgba(0, 240, 255, 0.5);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-section: 80px;
            --spacing-section-mobile: 48px;
            --font-primary: 'Segoe UI', 'Inter', system-ui, -apple-system, 'Roboto', 'Helvetica Neue', sans-serif;
            --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-base: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-primary);
            background-color: var(--primary-bg);
            color: var(--text-white);
            line-height: 1.6;
            overflow-x: hidden;
            background-image: 
                radial-gradient(circle at 15% 20%, rgba(0, 240, 255, 0.05) 0%, transparent 45%),
                radial-gradient(circle at 85% 80%, rgba(204, 255, 0, 0.04) 0%, transparent 45%),
                radial-gradient(circle at 50% 50%, rgba(15, 12, 32, 0.98) 0%, rgba(11, 26, 48, 0.98) 100%);
            background-attachment: fixed;
        }

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

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible,
        select:focus-visible {
            outline: 2px solid var(--accent-cyan);
            outline-offset: 3px;
            border-radius: 4px;
        }

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

        .container {
            max-width: 1200px;
            padding-left: 24px;
            padding-right: 24px;
        }

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

        .section-sm {
            padding-top: 48px;
            padding-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.15em;
            text-transform: uppercase;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
        }

        .section-title {
            font-size: 2.2rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-silver);
            line-height: 1.7;
            max-width: 720px;
            margin-bottom: 40px;
        }

        .section-divider {
            height: 1px;
            background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
            margin: 0;
        }

        /* Header / Nav */
        .site-header {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.15);
            position: sticky;
            top: 0;
            z-index: 1050;
            transition: background var(--transition-base), box-shadow var(--transition-base);
        }

        .site-header.scrolled {
            background: rgba(15, 12, 32, 0.98);
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        }

        .navbar-brand {
            font-weight: 800;
            font-size: 1.25rem;
            color: var(--text-white) !important;
            letter-spacing: -0.01em;
            white-space: normal;
            line-height: 1.3;
        }

        .navbar-brand .brand-icon {
            color: var(--accent-cyan);
            margin-right: 8px;
            font-size: 1.4rem;
        }

        .navbar-nav .nav-link {
            color: var(--text-silver) !important;
            font-weight: 500;
            font-size: 0.95rem;
            padding: 10px 18px !important;
            border-radius: 8px;
            transition: all var(--transition-fast);
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-white) !important;
            background: rgba(0, 240, 255, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-cyan) !important;
            background: rgba(0, 240, 255, 0.1);
        }

        .navbar-nav .nav-link.active::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 20px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .btn-login-nav {
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.25);
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 8px 18px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

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

        .btn-signup-nav {
            background: linear-gradient(135deg, var(--accent-cyan), #0088cc);
            border: none;
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 8px 22px;
            border-radius: 8px;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(0, 240, 255, 0.3);
            white-space: nowrap;
        }

        .btn-signup-nav:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            box-shadow: 0 6px 24px rgba(0, 240, 255, 0.5);
            transform: translateY(-2px);
            color: var(--primary-dark);
        }

        .navbar-toggler {
            border: 1px solid rgba(0, 240, 255, 0.3);
            background: rgba(0, 240, 255, 0.05);
            padding: 6px 12px;
            border-radius: 8px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.2);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300F0FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* Hero */
        .hero-video-section {
            position: relative;
            min-height: 620px;
            display: flex;
            align-items: center;
            overflow: hidden;
            background: linear-gradient(135deg, rgba(15, 12, 32, 0.9), rgba(11, 26, 48, 0.85));
            padding: 100px 0 80px;
        }

        .hero-bg-image {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.35;
            z-index: 0;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.75) 0%, rgba(11, 26, 48, 0.85) 100%);
            z-index: 1;
        }

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

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 8px 18px;
            border-radius: 50px;
            margin-bottom: 24px;
        }

        .hero-badge i {
            font-size: 0.9rem;
        }

        .hero-title {
            font-size: 3rem;
            font-weight: 900;
            line-height: 1.15;
            letter-spacing: -0.03em;
            margin-bottom: 24px;
            color: var(--text-white);
            text-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
        }

        .hero-title .highlight {
            color: var(--accent-cyan);
            text-shadow: 0 0 30px rgba(0, 240, 255, 0.5);
        }

        .hero-desc {
            font-size: 1.15rem;
            color: var(--text-silver);
            line-height: 1.75;
            max-width: 650px;
            margin-bottom: 36px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-bottom: 36px;
        }

        .btn-hero-primary {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            color: var(--primary-dark);
            font-weight: 700;
            font-size: 1.05rem;
            padding: 14px 32px;
            border-radius: 12px;
            border: none;
            transition: all var(--transition-base);
            box-shadow: 0 8px 28px rgba(0, 240, 255, 0.35);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 36px rgba(0, 240, 255, 0.55);
            color: var(--primary-dark);
        }

        .btn-hero-secondary {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(0, 240, 255, 0.4);
            color: var(--text-white);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 14px 28px;
            border-radius: 12px;
            transition: all var(--transition-base);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero-secondary:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            transform: translateY(-3px);
            color: var(--text-white);
        }

        .hero-play-btn {
            width: 72px;
            height: 72px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.15);
            border: 2px solid var(--accent-cyan);
            color: var(--accent-cyan);
            font-size: 2rem;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-base);
            animation: pulse-glow 2.5s infinite;
            box-shadow: 0 0 40px rgba(0, 240, 255, 0.3);
        }

        .hero-play-btn:hover {
            background: rgba(0, 240, 255, 0.3);
            transform: scale(1.08);
            box-shadow: 0 0 60px rgba(0, 240, 255, 0.6);
        }

        @keyframes pulse-glow {
            0%, 100% { box-shadow: 0 0 40px rgba(0, 240, 255, 0.3); }
            50% { box-shadow: 0 0 60px rgba(0, 240, 255, 0.55); }
        }

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

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

        .hero-stat-value {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-lime);
            line-height: 1.2;
        }

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

        /* Flash sale track */
        .flash-sale-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.95), rgba(11, 26, 48, 0.95));
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
            padding: 40px 0;
            overflow: hidden;
        }

        .flash-sale-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-cyan) transparent;
        }

        .flash-sale-track::-webkit-scrollbar {
            height: 6px;
        }

        .flash-sale-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .flash-sale-track::-webkit-scrollbar-thumb {
            background: var(--accent-cyan);
            border-radius: 10px;
        }

        .flash-item {
            flex: 0 0 260px;
            scroll-snap-align: start;
            background: var(--primary-surface);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-md);
            padding: 20px;
            transition: all var(--transition-base);
            position: relative;
        }

        .flash-item:hover {
            border-color: var(--border-glow-strong);
            box-shadow: var(--shadow-neon-hover);
            transform: translateY(-4px);
        }

        .flash-item-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: linear-gradient(135deg, #FF007F, #FF4444);
            color: #fff;
            font-size: 0.7rem;
            font-weight: 700;
            padding: 4px 12px;
            border-radius: 50px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

        .flash-item-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .flash-item-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .flash-item-desc {
            font-size: 0.85rem;
            color: var(--text-silver);
            margin-bottom: 12px;
        }

        .flash-item-price {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--accent-lime);
        }

        .flash-item-old-price {
            font-size: 0.85rem;
            color: var(--text-muted);
            text-decoration: line-through;
            margin-left: 8px;
        }

        /* Stock alert */
        .stock-alert-section {
            background: rgba(255, 0, 127, 0.06);
            border: 1px solid rgba(255, 0, 127, 0.2);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            margin-top: 32px;
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .stock-alert-icon {
            font-size: 2rem;
            color: var(--accent-pink);
            animation: blink-warning 1.5s infinite;
        }

        @keyframes blink-warning {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.5; }
        }

        .stock-alert-text {
            flex: 1;
            min-width: 200px;
        }

        .stock-alert-text strong {
            color: var(--text-white);
            font-size: 1.05rem;
            display: block;
        }

        .stock-alert-text span {
            color: var(--text-silver);
            font-size: 0.9rem;
        }

        .stock-progress {
            width: 160px;
            height: 8px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 10px;
            overflow: hidden;
        }

        .stock-progress-bar {
            height: 100%;
            background: linear-gradient(90deg, var(--accent-pink), #FF4444);
            border-radius: 10px;
            width: 78%;
            transition: width var(--transition-slow);
        }

        /* Content list section */
        .content-list-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.97), rgba(11, 26, 48, 0.97));
        }

        .content-list-grid {
            display: grid;
            grid-template-columns: 1fr 340px;
            gap: 40px;
            align-items: start;
        }

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

        .content-list-item {
            display: flex;
            align-items: center;
            gap: 20px;
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 20px 24px;
            transition: all var(--transition-base);
            text-decoration: none;
        }

        .content-list-item:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
            transform: translateX(6px);
        }

        .content-list-icon {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            border-radius: 12px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        .content-list-info {
            flex: 1;
            min-width: 0;
        }

        .content-list-title {
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .content-list-meta {
            font-size: 0.8rem;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
        }

        .content-list-meta i {
            margin-right: 4px;
        }

        .content-sidebar {
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px;
            position: sticky;
            top: 100px;
        }

        .content-sidebar-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .content-sidebar-title i {
            color: var(--accent-cyan);
        }

        .sidebar-cover {
            width: 100%;
            border-radius: var(--radius-sm);
            margin-bottom: 16px;
            border: 1px solid var(--border-glow);
        }

        .sidebar-card {
            margin-bottom: 16px;
            padding-bottom: 16px;
            border-bottom: 1px solid rgba(0, 240, 255, 0.08);
        }

        .sidebar-card:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }

        .sidebar-card-title {
            font-size: 0.95rem;
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 4px;
            line-height: 1.4;
        }

        .sidebar-card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* Buy button group */
        .buy-button-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.06), rgba(204, 255, 0, 0.04));
            border-top: 1px solid rgba(0, 240, 255, 0.1);
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .buy-button-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 20px;
        }

        .buy-button-card {
            background: var(--primary-surface);
            border: 1px solid var(--border-glow);
            border-radius: var(--radius-md);
            padding: 28px;
            text-align: center;
            transition: all var(--transition-base);
            position: relative;
            overflow: hidden;
        }

        .buy-button-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime));
        }

        .buy-button-card:hover {
            transform: translateY(-6px);
            box-shadow: var(--shadow-neon-hover);
            border-color: var(--border-glow-strong);
        }

        .buy-button-icon {
            font-size: 2.5rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .buy-button-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .buy-button-desc {
            font-size: 0.9rem;
            color: var(--text-silver);
            margin-bottom: 20px;
        }

        .btn-buy {
            background: linear-gradient(135deg, var(--accent-cyan), #0088cc);
            color: var(--primary-dark);
            font-weight: 700;
            padding: 12px 24px;
            border-radius: 10px;
            border: none;
            transition: all var(--transition-base);
            display: inline-block;
            width: 100%;
        }

        .btn-buy:hover {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            transform: translateY(-2px);
            color: var(--primary-dark);
            box-shadow: 0 8px 24px rgba(0, 240, 255, 0.4);
        }

        /* Feature section */
        .feature-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.97), rgba(11, 26, 48, 0.97));
        }

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

        .feature-card {
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 28px;
            transition: all var(--transition-base);
            position: relative;
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
        }

        .feature-card-icon {
            width: 56px;
            height: 56px;
            border-radius: 14px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            margin-bottom: 16px;
        }

        .feature-card-title {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .feature-card-desc {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* Agenda timeline */
        .timeline-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.97), rgba(11, 26, 48, 0.97));
        }

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

        .timeline::before {
            content: '';
            position: absolute;
            left: 12px;
            top: 0;
            bottom: 0;
            width: 2px;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-lime), var(--accent-pink));
            border-radius: 2px;
        }

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

        .timeline-item:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -32px;
            top: 6px;
            width: 16px;
            height: 16px;
            border-radius: 50%;
            background: var(--accent-cyan);
            border: 3px solid var(--primary-bg);
            box-shadow: 0 0 16px rgba(0, 240, 255, 0.5);
        }

        .timeline-time {
            font-size: 0.85rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 4px;
        }

        .timeline-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .timeline-desc {
            font-size: 0.95rem;
            color: var(--text-silver);
            line-height: 1.6;
        }

        /* Entry matrix */
        .entry-matrix-section {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.04), rgba(204, 255, 0, 0.03));
        }

        .entry-matrix-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 16px;
        }

        .entry-matrix-card {
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            padding: 24px;
            text-align: center;
            transition: all var(--transition-base);
            text-decoration: none;
            color: var(--text-white);
            display: block;
        }

        .entry-matrix-card:hover {
            border-color: var(--border-glow-strong);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
            color: var(--text-white);
        }

        .entry-matrix-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .entry-matrix-title {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 4px;
        }

        .entry-matrix-desc {
            font-size: 0.8rem;
            color: var(--text-silver);
        }

        /* Media highlight */
        .media-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.97), rgba(11, 26, 48, 0.97));
        }

        .media-track {
            display: flex;
            gap: 20px;
            overflow-x: auto;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            padding-bottom: 12px;
            scrollbar-width: thin;
            scrollbar-color: var(--accent-cyan) transparent;
        }

        .media-track::-webkit-scrollbar {
            height: 6px;
        }

        .media-track::-webkit-scrollbar-track {
            background: transparent;
        }

        .media-track::-webkit-scrollbar-thumb {
            background: var(--accent-cyan);
            border-radius: 10px;
        }

        .media-card {
            flex: 0 0 300px;
            scroll-snap-align: start;
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-base);
        }

        .media-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-neon);
        }

        .media-card img {
            width: 100%;
            height: 170px;
            object-fit: cover;
            border-bottom: 1px solid rgba(0, 240, 255, 0.1);
        }

        .media-card-body {
            padding: 18px;
        }

        .media-card-tag {
            display: inline-block;
            font-size: 0.7rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            padding: 4px 10px;
            border-radius: 50px;
            margin-bottom: 8px;
        }

        .media-card-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
            margin-bottom: 4px;
        }

        .media-card-date {
            font-size: 0.8rem;
            color: var(--text-muted);
        }

        /* FAQ */
        .faq-section {
            background: linear-gradient(180deg, rgba(15, 12, 32, 0.97), rgba(11, 26, 48, 0.97));
        }

        .faq-accordion .accordion-item {
            background: var(--primary-surface);
            border: 1px solid rgba(0, 240, 255, 0.1);
            border-radius: var(--radius-md) !important;
            margin-bottom: 16px;
            overflow: hidden;
        }

        .faq-accordion .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            padding: 20px 24px;
            border-radius: var(--radius-md);
        }

        .faq-accordion .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.05);
            color: var(--accent-cyan);
            box-shadow: none;
        }

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

        .faq-accordion .accordion-button:focus {
            box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.2);
        }

        .faq-accordion .accordion-body {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.7;
            padding: 0 24px 20px;
        }

        /* FAB */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-image: linear-gradient(rgba(15, 12, 32, 0.85), rgba(15, 12, 32, 0.85)), linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            background-origin: border-box;
            background-clip: padding-box, border-box;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: all var(--transition-base);
            box-shadow: 0 0 20px rgba(0, 240, 255, 0.4);
            animation: fab-float 3s ease-in-out infinite;
            text-decoration: none;
        }

        .fab-support:hover {
            box-shadow: 0 0 35px rgba(0, 240, 255, 0.7);
            transform: scale(1.1);
            color: var(--accent-lime);
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            border-radius: 50%;
            background: var(--accent-pink);
            border: 2px solid var(--primary-dark);
            animation: blink-warning 1.5s infinite;
        }

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

        /* Footer */
        .site-footer {
            background: rgba(11, 26, 48, 0.98);
            border-top: 1px solid rgba(0, 240, 255, 0.15);
            padding: 60px 0 30px;
        }

        .footer-brand {
            font-size: 1.2rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.4;
        }

        .footer-desc {
            color: var(--text-silver);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .footer-title {
            font-size: 0.95rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: 0.05em;
            text-transform: uppercase;
        }

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

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

        .footer-links a {
            color: var(--text-silver);
            font-size: 0.9rem;
            transition: all var(--transition-fast);
        }

        .footer-links a:hover {
            color: var(--accent-cyan);
            padding-left: 4px;
        }

        .footer-payment {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-top: 16px;
        }

        .payment-badge {
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: 8px;
            padding: 8px 14px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-silver);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

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

        .footer-bottom p {
            color: var(--text-muted);
            font-size: 0.85rem;
            margin: 0;
        }

        .footer-trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(0, 240, 255, 0.06);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.8rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.4rem;
            }

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

            .content-sidebar {
                position: static;
                margin-top: 24px;
            }

            .section {
                padding-top: 60px;
                padding-bottom: 60px;
            }
        }

        @media (max-width: 768px) {
            .hero-video-section {
                min-height: auto;
                padding: 80px 0 60px;
            }

            .hero-title {
                font-size: 1.9rem;
            }

            .hero-desc {
                font-size: 1rem;
            }

            .hero-stats {
                gap: 16px;
            }

            .hero-stat-value {
                font-size: 1.3rem;
            }

            .section-title {
                font-size: 1.6rem;
            }

            .section-desc {
                font-size: 0.95rem;
            }

            .navbar-brand {
                font-size: 1rem;
            }

            .navbar-nav {
                padding: 16px 0;
            }

            .navbar-nav .nav-link {
                padding: 10px 16px !important;
            }

            .btn-login-nav,
            .btn-signup-nav {
                font-size: 0.85rem;
                padding: 8px 14px;
            }

            .fab-support {
                width: 48px;
                height: 48px;
                font-size: 1.2rem;
                left: 12px;
                bottom: 80px;
            }

            .stock-alert-section {
                flex-direction: column;
                align-items: flex-start;
            }

            .stock-progress {
                width: 100%;
            }

            .timeline {
                padding-left: 24px;
            }

            .timeline-item {
                padding-left: 16px;
            }

            .timeline-dot {
                left: -24px;
                width: 14px;
                height: 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .hero-title {
                font-size: 1.6rem;
            }

            .hero-cta-group {
                flex-direction: column;
                width: 100%;
            }

            .btn-hero-primary,
            .btn-hero-secondary {
                width: 100%;
                justify-content: center;
                font-size: 0.95rem;
                padding: 12px 20px;
            }

            .hero-play-btn {
                width: 56px;
                height: 56px;
                font-size: 1.5rem;
            }

            .section-title {
                font-size: 1.4rem;
            }

            .flash-item {
                flex: 0 0 220px;
            }

            .media-card {
                flex: 0 0 260px;
            }

            .buy-button-grid {
                grid-template-columns: 1fr;
            }

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

            .entry-matrix-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }

            .entry-matrix-card {
                padding: 16px;
            }

            .site-footer {
                padding: 40px 0 20px;
            }
        }

/* roulang page: category1 */
:root {
            --bg-deep: #0F0C20;
            --bg-ocean: #0B1A30;
            --bg-panel: rgba(15, 22, 42, 0.85);
            --bg-card: rgba(18, 28, 50, 0.7);
            --accent-lime: #CCFF00;
            --accent-cyan: #00F0FF;
            --accent-pink: #FF007F;
            --text-white: #FFFFFF;
            --text-silver: #A6ACAF;
            --text-muted: #7A8494;
            --border-glow: rgba(0, 240, 255, 0.3);
            --border-lime: rgba(204, 255, 0, 0.4);
            --shadow-neon: 0 0 18px rgba(0, 240, 255, 0.35);
            --shadow-lime: 0 0 22px rgba(204, 255, 0, 0.3);
            --radius-lg: 24px;
            --radius-md: 16px;
            --radius-sm: 10px;
            --spacing-section: 88px;
            --transition-smooth: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        body {
            font-family: 'Inter', 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, sans-serif;
            background: radial-gradient(circle at 15% 0%, #1a1a3e 0%, var(--bg-deep) 45%, var(--bg-ocean) 100%);
            background-attachment: fixed;
            color: var(--text-white);
            line-height: 1.65;
            min-height: 100vh;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--accent-cyan);
            text-decoration: none;
            transition: var(--transition-smooth);
        }
        a:hover, a:focus {
            color: var(--accent-lime);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            transition: var(--transition-smooth);
            outline: none;
            box-shadow: none;
        }
        button:focus-visible, .btn:focus-visible, a:focus-visible {
            outline: 3px solid var(--accent-cyan);
            outline-offset: 3px;
        }
        .container {
            max-width: 1200px;
        }
        /* HEADER / NAV */
        .site-header {
            background: rgba(10, 12, 30, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
            padding: 12px 0;
            position: sticky;
            top: 0;
            z-index: 1050;
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.55);
        }
        .navbar-brand {
            font-weight: 800;
            font-size: 1.5rem;
            color: var(--text-white);
            display: flex;
            align-items: center;
            letter-spacing: 0.5px;
        }
        .navbar-brand:hover {
            color: var(--accent-lime);
        }
        .brand-icon {
            color: var(--accent-cyan);
            font-size: 1.6rem;
            margin-right: 10px;
            filter: drop-shadow(0 0 10px rgba(0, 240, 255, 0.7));
        }
        .navbar-nav .nav-link {
            color: var(--text-silver);
            font-weight: 600;
            font-size: 0.95rem;
            padding: 8px 16px;
            border-radius: 30px;
            transition: var(--transition-smooth);
            position: relative;
        }
        .navbar-nav .nav-link:hover {
            color: var(--text-white);
            background: rgba(0, 240, 255, 0.12);
        }
        .navbar-nav .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.15);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.4);
        }
        .btn-login-nav, .btn-signup-nav {
            border-radius: 30px;
            padding: 9px 22px;
            font-weight: 700;
            font-size: 0.9rem;
            white-space: nowrap;
            display: inline-block;
        }
        .btn-login-nav {
            color: var(--text-white);
            background: transparent;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }
        .btn-login-nav:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }
        .btn-signup-nav {
            color: #0F0C20;
            background: var(--accent-lime);
            border: none;
            box-shadow: 0 0 16px rgba(204, 255, 0, 0.45);
        }
        .btn-signup-nav:hover {
            background: #e0ff33;
            box-shadow: 0 0 26px rgba(204, 255, 0, 0.65);
            transform: translateY(-2px);
        }
        .navbar-toggler {
            border: 1px solid rgba(0, 240, 255, 0.4);
            background: rgba(0, 240, 255, 0.08);
            padding: 8px 10px;
        }
        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(0, 240, 255, 0.85)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }
        /* HERO */
        .hero-category {
            padding: 90px 0 70px;
            position: relative;
            background: linear-gradient(135deg, rgba(11, 26, 48, 0.92) 0%, rgba(15, 12, 32, 0.9) 60%, rgba(20, 10, 40, 0.88) 100%), url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            background-blend-mode: overlay;
            border-bottom: 1px solid rgba(0, 240, 255, 0.2);
        }
        .hero-category::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            height: 4px;
            background: linear-gradient(90deg, var(--accent-cyan), var(--accent-lime), var(--accent-pink));
            opacity: 0.8;
        }
        .hero-category .lead-question {
            font-size: 1.2rem;
            color: var(--accent-cyan);
            font-weight: 700;
            letter-spacing: 1px;
            text-transform: uppercase;
            margin-bottom: 12px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .hero-category .lead-question i {
            font-size: 1.4rem;
        }
        .hero-category h1 {
            font-size: 3.2rem;
            font-weight: 900;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 24px;
            max-width: 800px;
            text-shadow: 0 4px 28px rgba(0, 240, 255, 0.4);
        }
        .hero-category h1 .highlight {
            background: linear-gradient(135deg, var(--accent-lime), var(--accent-cyan));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-category .hero-desc {
            font-size: 1.15rem;
            color: var(--text-silver);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 32px;
        }
        .hero-form-card {
            background: rgba(15, 22, 42, 0.85);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(0, 240, 255, 0.3);
            border-radius: var(--radius-lg);
            padding: 28px;
            box-shadow: var(--shadow-neon);
        }
        .hero-form-card .form-title {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }
        .hero-form-card .form-label {
            color: var(--text-silver);
            font-weight: 600;
            font-size: 0.9rem;
        }
        .hero-form-card .form-control {
            background: rgba(11, 26, 48, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.3);
            color: var(--text-white);
            border-radius: 10px;
            padding: 12px 16px;
            font-size: 0.95rem;
        }
        .hero-form-card .form-control:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(0, 240, 255, 0.4);
            background: rgba(11, 26, 48, 0.95);
            color: var(--text-white);
        }
        .hero-form-card .form-control::placeholder {
            color: #5a6a7a;
        }
        .btn-neon-primary {
            background: var(--accent-lime);
            color: #0F0C20;
            font-weight: 800;
            border: none;
            border-radius: 30px;
            padding: 13px 32px;
            font-size: 1rem;
            box-shadow: 0 0 22px rgba(204, 255, 0, 0.5);
            letter-spacing: 0.5px;
        }
        .btn-neon-primary:hover {
            background: #e0ff33;
            box-shadow: 0 0 36px rgba(204, 255, 0, 0.75);
            transform: translateY(-2px);
            color: #0F0C20;
        }
        .hero-privacy {
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-top: 12px;
        }
        .hero-privacy i {
            color: var(--accent-cyan);
            margin-right: 5px;
        }
        /* SECTION GENERAL */
        .section-block {
            padding: var(--spacing-section) 0;
            position: relative;
        }
        .section-label {
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--accent-cyan);
            margin-bottom: 14px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .section-label i {
            font-size: 1rem;
        }
        .section-title {
            font-size: 2.5rem;
            font-weight: 800;
            line-height: 1.25;
            color: var(--text-white);
            margin-bottom: 20px;
            max-width: 700px;
        }
        .section-desc {
            font-size: 1.1rem;
            color: var(--text-silver);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 40px;
        }
        /* STEP CARD (numbered) */
        .step-card {
            background: var(--bg-card);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            height: 100%;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }
        .step-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            transform: translateY(-5px);
        }
        .step-number {
            font-size: 3rem;
            font-weight: 900;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-lime));
            -webkit-background-clip: text;
            background-clip: text;
            -webkit-text-fill-color: transparent;
            line-height: 1;
            margin-bottom: 16px;
        }
        .step-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .step-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            line-height: 1.65;
            margin-bottom: 0;
        }
        /* PLATFORM CARD */
        .platform-card {
            background: rgba(18, 28, 50, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: var(--radius-md);
            padding: 32px 28px;
            height: 100%;
            transition: var(--transition-smooth);
            position: relative;
        }
        .platform-card:hover {
            border-color: var(--accent-lime);
            box-shadow: var(--shadow-lime);
            transform: translateY(-6px);
        }
        .platform-icon {
            width: 64px;
            height: 64px;
            border-radius: 18px;
            background: rgba(0, 240, 255, 0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
        }
        .platform-card h3 {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .platform-card p {
            color: var(--text-silver);
            font-size: 0.95rem;
            margin-bottom: 16px;
        }
        .platform-tag {
            display: inline-block;
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            border: 1px solid rgba(204, 255, 0, 0.3);
        }
        /* TROUBLESHOOT LIST */
        .issue-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .issue-list li {
            background: rgba(18, 28, 50, 0.6);
            border-left: 4px solid var(--accent-cyan);
            border-radius: 0 12px 12px 0;
            padding: 18px 22px;
            margin-bottom: 14px;
            transition: var(--transition-smooth);
        }
        .issue-list li:hover {
            background: rgba(18, 28, 50, 0.9);
            border-left-color: var(--accent-lime);
            transform: translateX(6px);
        }
        .issue-list li strong {
            color: var(--text-white);
            display: block;
            font-size: 1.05rem;
            margin-bottom: 6px;
        }
        .issue-list li span {
            color: var(--text-silver);
            font-size: 0.95rem;
        }
        /* FAQ */
        .accordion-item {
            background: rgba(15, 22, 42, 0.7);
            border: 1px solid rgba(0, 240, 255, 0.2);
            border-radius: var(--radius-sm);
            margin-bottom: 14px;
            overflow: hidden;
        }
        .accordion-button {
            background: transparent;
            color: var(--text-white);
            font-weight: 700;
            padding: 20px 24px;
            font-size: 1rem;
            box-shadow: none;
        }
        .accordion-button:not(.collapsed) {
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            box-shadow: none;
        }
        .accordion-button:focus {
            box-shadow: none;
            border-color: var(--accent-cyan);
        }
        .accordion-button::after {
            filter: invert(80%) sepia(80%) saturate(500%) hue-rotate(140deg);
        }
        .accordion-body {
            color: var(--text-silver);
            padding: 18px 24px;
            font-size: 0.95rem;
            line-height: 1.7;
        }
        /* CTA SECTION */
        .cta-panel {
            background: linear-gradient(135deg, rgba(0, 240, 255, 0.15) 0%, rgba(204, 255, 0, 0.12) 100%);
            border: 1px solid rgba(0, 240, 255, 0.4);
            border-radius: var(--radius-lg);
            padding: 60px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-panel::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -20%;
            width: 60%;
            height: 200%;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.2) 0%, transparent 70%);
            transform: rotate(30deg);
            pointer-events: none;
        }
        .cta-panel h2 {
            font-size: 2.4rem;
            font-weight: 900;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }
        .cta-panel p {
            color: var(--text-silver);
            font-size: 1.1rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        /* FOOTER */
        .site-footer {
            background: rgba(8, 10, 26, 0.95);
            border-top: 1px solid rgba(0, 240, 255, 0.2);
            padding: 60px 0 30px;
            margin-top: 0;
        }
        .footer-brand {
            font-size: 1.4rem;
            font-weight: 800;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
        }
        .footer-desc {
            color: var(--text-muted);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 20px;
        }
        .footer-trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.1);
            color: var(--accent-cyan);
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            border: 1px solid rgba(0, 240, 255, 0.3);
        }
        .footer-title {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1rem;
            margin-bottom: 18px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }
        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-links li {
            margin-bottom: 10px;
        }
        .footer-links a {
            color: var(--text-silver);
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        .footer-links a:hover {
            color: var(--accent-lime);
            padding-left: 6px;
        }
        .footer-payment {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }
        .payment-badge {
            background: rgba(18, 28, 50, 0.8);
            border: 1px solid rgba(0, 240, 255, 0.25);
            border-radius: 8px;
            padding: 8px 14px;
            font-size: 0.8rem;
            color: var(--text-silver);
            font-weight: 600;
            transition: var(--transition-smooth);
        }
        .payment-badge:hover {
            border-color: var(--accent-cyan);
            color: var(--text-white);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.08);
            margin-top: 40px;
            padding-top: 22px;
            color: var(--text-muted);
            font-size: 0.8rem;
            text-align: center;
        }
        /* FAB */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 999;
            width: 58px;
            height: 58px;
            border-radius: 50%;
            background: rgba(0, 0, 0, 0.7);
            backdrop-filter: blur(10px);
            border: 2px solid var(--accent-cyan);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.5rem;
            box-shadow: 0 0 22px rgba(0, 240, 255, 0.5);
            opacity: 0.7;
            animation: fab-breathe 3s ease-in-out infinite;
            transition: var(--transition-smooth);
        }
        .fab-left:hover {
            opacity: 1;
            box-shadow: 0 0 38px rgba(0, 240, 255, 0.8);
            transform: scale(1.1);
            border-color: var(--accent-lime);
            color: var(--accent-lime);
        }
        .fab-left:active {
            transform: scale(0.95);
        }
        @keyframes fab-breathe {
            0%, 100% { box-shadow: 0 0 18px rgba(0, 240, 255, 0.4); }
            50% { box-shadow: 0 0 32px rgba(0, 240, 255, 0.7); }
        }
        /* RESPONSIVE */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 64px;
            }
            .hero-category h1 {
                font-size: 2.4rem;
            }
            .section-title {
                font-size: 2rem;
            }
        }
        @media (max-width: 768px) {
            .hero-category {
                padding: 60px 0 50px;
            }
            .hero-category h1 {
                font-size: 1.9rem;
            }
            .hero-category .hero-desc {
                font-size: 1rem;
            }
            .section-block {
                padding: 50px 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .cta-panel h2 {
                font-size: 1.8rem;
            }
            .cta-panel {
                padding: 40px 20px;
            }
            .navbar-brand {
                font-size: 1.3rem;
            }
            .btn-login-nav, .btn-signup-nav {
                padding: 7px 16px;
                font-size: 0.8rem;
            }
        }
        @media (max-width: 520px) {
            .hero-category h1 {
                font-size: 1.6rem;
            }
            .hero-form-card {
                padding: 18px;
            }
            .btn-neon-primary {
                width: 100%;
                padding: 12px 20px;
            }
            .step-card, .platform-card {
                padding: 20px 16px;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .fab-left {
                width: 50px;
                height: 50px;
                font-size: 1.2rem;
                left: 16px;
                bottom: 80px;
            }
            .navbar .d-flex.gap-2 {
                flex-direction: column;
                gap: 8px !important;
            }
            .btn-login-nav, .btn-signup-nav {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: article */
:root {
            --bg-deep: #0A2E1C;
            --bg-forest: #123E25;
            --bg-card: #0D3523;
            --accent-gold: #FFD700;
            --accent-amber: #FF9F00;
            --accent-red: #D32F2F;
            --text-white: #FFFFFF;
            --text-mint: #D1F2EB;
            --text-soft: #A8C9BE;
            --border-gold: rgba(255, 215, 0, 0.35);
            --border-soft: rgba(255, 255, 255, 0.08);
            --radius-sm: 8px;
            --radius-md: 14px;
            --radius-lg: 24px;
            --shadow-card: 0 12px 32px rgba(0, 0, 0, 0.35);
            --shadow-gold: 0 8px 24px rgba(255, 215, 0, 0.18);
            --transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
            --font-body: 'Be Vietnam Pro', sans-serif;
            --font-heading: 'Playfair Display', serif;
            --container-max: 1200px;
            --section-space: 72px;
            --section-space-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-body);
            background: var(--bg-deep);
            color: var(--text-white);
            line-height: 1.65;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

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

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

        button {
            font-family: inherit;
            cursor: pointer;
            transition: var(--transition);
        }

        .container {
            max-width: var(--container-max);
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ============ HEADER / NAV ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1050;
            background: rgba(10, 46, 28, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-soft);
            transition: var(--transition);
            padding: 0;
        }

        .site-header.scrolled {
            box-shadow: 0 6px 30px rgba(0, 0, 0, 0.45);
            background: rgba(8, 36, 22, 0.97);
        }

        .site-header .navbar {
            padding: 14px 0;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 1.55rem;
            color: var(--accent-gold) !important;
            letter-spacing: 0.5px;
            text-transform: uppercase;
            transition: var(--transition);
        }

        .navbar-brand:hover {
            color: #fff !important;
            transform: translateY(-1px);
        }

        .brand-icon {
            font-size: 1.7rem;
            color: var(--accent-gold);
            animation: fishFloat 3s ease-in-out infinite;
        }

        @keyframes fishFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-4px); }
        }

        .navbar-nav .nav-link {
            color: var(--text-mint);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 10px 16px !important;
            position: relative;
            transition: var(--transition);
            letter-spacing: 0.3px;
        }

        .navbar-nav .nav-link::after {
            content: '';
            position: absolute;
            bottom: 4px;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: var(--accent-gold);
            border-radius: 2px;
            transition: var(--transition);
        }

        .navbar-nav .nav-link:hover,
        .navbar-nav .nav-link.active {
            color: var(--accent-gold) !important;
        }

        .navbar-nav .nav-link:hover::after,
        .navbar-nav .nav-link.active::after {
            width: 28px;
        }

        .btn-login-nav {
            color: var(--text-mint);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: 50px;
            border: 1.5px solid transparent;
            transition: var(--transition);
        }

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

        .btn-signup-nav {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: var(--bg-deep);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 10px 24px;
            border-radius: 50px;
            border: none;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
        }

        .btn-signup-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 12px 32px rgba(255, 215, 0, 0.35);
            color: var(--bg-deep);
        }

        .navbar-toggler {
            border: 1px solid var(--border-soft);
            background: rgba(255, 255, 255, 0.05);
            padding: 8px 12px;
        }

        .navbar-toggler:focus {
            box-shadow: 0 0 0 3px rgba(255, 215, 0, 0.25);
            outline: none;
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23D1F2EB' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ============ ARTICLE HERO ============ */
        .article-hero {
            position: relative;
            padding: 64px 0 56px;
            background: 
                linear-gradient(180deg, rgba(10, 46, 28, 0.75) 0%, rgba(10, 46, 28, 0.92) 100%),
                url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            border-bottom: 1px solid var(--border-soft);
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at 70% 30%, rgba(255, 215, 0, 0.08) 0%, transparent 60%);
            pointer-events: none;
        }

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

        .article-breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 0.85rem;
            color: var(--text-soft);
            margin-bottom: 20px;
        }

        .article-breadcrumb a {
            color: var(--text-mint);
            transition: var(--transition);
        }

        .article-breadcrumb a:hover {
            color: var(--accent-gold);
        }

        .article-breadcrumb .separator {
            color: var(--accent-gold);
            font-size: 0.7rem;
        }

        .article-breadcrumb .current {
            color: var(--accent-gold);
            font-weight: 600;
        }

        .article-hero h1 {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 2.8rem;
            line-height: 1.2;
            color: var(--text-white);
            margin-bottom: 20px;
            letter-spacing: 0.5px;
            max-width: 900px;
        }

        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 0.9rem;
            color: var(--text-soft);
        }

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

        .article-meta .meta-item i {
            color: var(--accent-gold);
            font-size: 0.85rem;
        }

        .article-category-tag {
            display: inline-block;
            background: rgba(255, 215, 0, 0.15);
            border: 1px solid var(--border-gold);
            color: var(--accent-gold);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: 50px;
            letter-spacing: 0.4px;
        }

        /* ============ ARTICLE CONTENT ============ */
        .article-content-wrapper {
            flex: 1;
            padding: var(--section-space) 0;
        }

        .article-content-wrapper .container {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 320px;
            gap: 48px;
            align-items: start;
        }

        .article-main-content {
            background: rgba(13, 53, 35, 0.6);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-card);
            min-height: 400px;
        }

        .article-main-content .article-cover {
            border-radius: var(--radius-md);
            overflow: hidden;
            margin-bottom: 32px;
            border: 1px solid var(--border-soft);
        }

        .article-main-content .article-cover img {
            width: 100%;
            height: 380px;
            object-fit: cover;
            transition: transform 0.6s ease;
        }

        .article-main-content .article-cover:hover img {
            transform: scale(1.02);
        }

        .article-body {
            color: var(--text-mint);
            font-size: 1.05rem;
            line-height: 1.75;
        }

        .article-body h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.8rem;
            color: var(--text-white);
            margin: 36px 0 16px;
            padding-bottom: 12px;
            border-bottom: 2px solid var(--border-gold);
            letter-spacing: 0.3px;
        }

        .article-body h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.4rem;
            color: var(--accent-gold);
            margin: 28px 0 12px;
            letter-spacing: 0.2px;
        }

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

        .article-body ul,
        .article-body ol {
            margin: 16px 0 20px 24px;
            padding: 0;
        }

        .article-body ul li,
        .article-body ol li {
            margin-bottom: 10px;
            padding-left: 8px;
            position: relative;
        }

        .article-body ul li::marker {
            color: var(--accent-gold);
        }

        .article-body ol li::marker {
            color: var(--accent-gold);
            font-weight: 700;
        }

        .article-body blockquote {
            background: rgba(255, 215, 0, 0.08);
            border-left: 4px solid var(--accent-gold);
            padding: 20px 24px;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            margin: 24px 0;
            font-style: italic;
            color: var(--text-white);
            font-size: 1.05rem;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 24px 0;
            border: 1px solid var(--border-soft);
        }

        .article-body a {
            color: var(--accent-gold);
            text-decoration: underline;
            text-underline-offset: 3px;
        }

        .article-body a:hover {
            color: #fff;
        }

        .article-not-found {
            text-align: center;
            padding: 60px 20px;
        }

        .article-not-found .icon {
            font-size: 4rem;
            color: var(--accent-gold);
            margin-bottom: 24px;
            opacity: 0.7;
        }

        .article-not-found h2 {
            font-family: var(--font-heading);
            font-size: 1.8rem;
            margin-bottom: 12px;
        }

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

        /* ============ SIDEBAR ============ */
        .article-sidebar {
            position: sticky;
            top: 100px;
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .sidebar-card {
            background: rgba(13, 53, 35, 0.7);
            border: 1px solid var(--border-soft);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition);
        }

        .sidebar-card:hover {
            border-color: var(--border-gold);
            box-shadow: var(--shadow-gold);
        }

        .sidebar-card .card-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1.15rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .sidebar-card .card-title i {
            font-size: 1rem;
        }

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

        .sidebar-guide-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--border-soft);
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text-mint);
            font-size: 0.92rem;
            transition: var(--transition);
        }

        .sidebar-guide-list li:last-child {
            border-bottom: none;
        }

        .sidebar-guide-list li i {
            color: var(--accent-gold);
            font-size: 0.75rem;
            margin-top: 5px;
        }

        .sidebar-guide-list li:hover {
            color: var(--accent-gold);
            padding-left: 6px;
        }

        .sidebar-giftcode-box {
            background: linear-gradient(135deg, rgba(255, 215, 0, 0.12), rgba(255, 159, 0, 0.06));
            border: 1.5px solid var(--border-gold);
            border-radius: var(--radius-md);
            padding: 20px;
            text-align: center;
        }

        .sidebar-giftcode-box .gift-icon {
            font-size: 2.5rem;
            color: var(--accent-gold);
            margin-bottom: 12px;
        }

        .sidebar-giftcode-box .gift-text {
            font-size: 0.9rem;
            color: var(--text-mint);
            margin-bottom: 8px;
        }

        .sidebar-giftcode-box .gift-code {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent-gold);
            letter-spacing: 1px;
            background: rgba(0, 0, 0, 0.3);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            display: inline-block;
            margin-bottom: 12px;
        }

        /* ============ CTA SECTION ============ */
        .cta-section {
            padding: var(--section-space) 0;
            background: 
                linear-gradient(180deg, rgba(10, 46, 28, 0.85) 0%, rgba(10, 46, 28, 0.95) 100%),
                url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            border-top: 1px solid var(--border-soft);
            border-bottom: 1px solid var(--border-soft);
        }

        .cta-card {
            background: rgba(13, 53, 35, 0.75);
            border: 1px solid var(--border-gold);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            overflow: hidden;
        }

        .cta-card::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(255, 215, 0, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-card h2 {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 16px;
            position: relative;
            z-index: 1;
        }

        .cta-card p {
            color: var(--text-mint);
            font-size: 1.05rem;
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }

        .cta-buttons {
            display: flex;
            gap: 16px;
            justify-content: center;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        .btn-cta-primary {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-amber));
            color: var(--bg-deep);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            box-shadow: var(--shadow-gold);
            transition: var(--transition);
        }

        .btn-cta-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 16px 40px rgba(255, 215, 0, 0.4);
            color: var(--bg-deep);
        }

        .btn-cta-secondary {
            background: transparent;
            color: var(--accent-gold);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: 2px solid var(--border-gold);
            transition: var(--transition);
        }

        .btn-cta-secondary:hover {
            background: rgba(255, 215, 0, 0.1);
            color: #fff;
            transform: translateY(-3px);
        }

        /* ============ FAB ============ */
        .fab-floating {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 1000;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: radial-gradient(circle at 30% 30%, #1a4a2e, #0a2e1c);
            border: 2px solid var(--accent-gold);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-gold);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
            animation: fabBreathe 3s ease-in-out infinite;
            transition: var(--transition);
            opacity: 0.7;
            text-decoration: none;
        }

        .fab-floating:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 8px 32px rgba(255, 215, 0, 0.5);
            color: var(--accent-gold);
        }

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

        .fab-floating .fab-dot {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: var(--accent-red);
            border-radius: 50%;
            border: 2px solid var(--bg-deep);
            animation: dotBlink 1.5s ease-in-out infinite;
        }

        @keyframes fabBreathe {
            0%, 100% { box-shadow: 0 4px 20px rgba(255, 215, 0, 0.3); }
            50% { box-shadow: 0 4px 28px rgba(255, 215, 0, 0.55); }
        }

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

        /* ============ FOOTER ============ */
        .site-footer {
            background: #071A11;
            border-top: 1px solid var(--border-gold);
            padding: 56px 0 32px;
            margin-top: auto;
        }

        .footer-brand {
            font-family: var(--font-heading);
            font-weight: 900;
            font-size: 1.4rem;
            color: var(--accent-gold);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

        .footer-desc {
            color: var(--text-soft);
            font-size: 0.9rem;
            line-height: 1.7;
            margin-bottom: 16px;
        }

        .footer-trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            color: var(--accent-gold);
            font-size: 0.85rem;
            font-weight: 600;
            background: rgba(255, 215, 0, 0.08);
            border: 1px solid var(--border-gold);
            padding: 8px 16px;
            border-radius: 50px;
        }

        .footer-title {
            font-weight: 700;
            font-size: 1rem;
            color: var(--accent-gold);
            margin-bottom: 18px;
            letter-spacing: 0.5px;
            text-transform: uppercase;
        }

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

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

        .footer-links a {
            color: var(--text-soft);
            font-size: 0.9rem;
            transition: var(--transition);
        }

        .footer-links a:hover {
            color: var(--accent-gold);
            padding-left: 4px;
        }

        .footer-payment {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .payment-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-soft);
            color: var(--text-mint);
            font-size: 0.8rem;
            padding: 8px 14px;
            border-radius: 50px;
            transition: var(--transition);
        }

        .payment-badge:hover {
            border-color: var(--border-gold);
            color: var(--accent-gold);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-soft);
            margin-top: 40px;
            padding-top: 24px;
            text-align: center;
            color: var(--text-soft);
            font-size: 0.85rem;
        }

        .footer-bottom a {
            color: var(--accent-gold);
        }

        .footer-bottom a:hover {
            text-decoration: underline;
        }

        /* ============ RESPONSIVE ============ */
        @media (max-width: 991.98px) {
            .article-content-wrapper .container {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .article-hero h1 {
                font-size: 2.2rem;
            }

            .article-main-content {
                padding: 28px 24px;
            }

            .article-main-content .article-cover img {
                height: 280px;
            }

            .site-header .navbar {
                padding: 10px 0;
            }

            .navbar-brand {
                font-size: 1.3rem;
            }

            .navbar-collapse {
                background: rgba(8, 36, 22, 0.98);
                border-radius: 0 0 var(--radius-md) var(--radius-md);
                padding: 16px;
                border: 1px solid var(--border-soft);
                margin-top: 10px;
            }

            .navbar-nav {
                gap: 4px;
            }

            .navbar-nav .nav-link {
                padding: 12px 16px !important;
            }

            .navbar-nav .nav-link::after {
                display: none;
            }

            .d-flex.gap-2.align-items-center {
                margin-top: 16px;
                flex-direction: column;
                width: 100%;
            }

            .btn-login-nav,
            .btn-signup-nav {
                width: 100%;
                text-align: center;
                padding: 12px 20px;
            }
        }

        @media (max-width: 767.98px) {
            :root {
                --section-space: var(--section-space-mobile);
            }

            .article-hero {
                padding: 40px 0 36px;
            }

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

            .article-meta {
                gap: 12px;
                font-size: 0.8rem;
                flex-wrap: wrap;
            }

            .article-main-content {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }

            .article-main-content .article-cover img {
                height: 200px;
            }

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

            .article-body h2 {
                font-size: 1.4rem;
            }

            .article-body h3 {
                font-size: 1.2rem;
            }

            .cta-card {
                padding: 32px 20px;
            }

            .cta-card h2 {
                font-size: 1.5rem;
            }

            .cta-buttons {
                flex-direction: column;
                gap: 12px;
            }

            .btn-cta-primary,
            .btn-cta-secondary {
                width: 100%;
                text-align: center;
            }

            .fab-floating {
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
                left: 12px;
                bottom: 80px;
            }

            .site-footer {
                padding: 40px 0 24px;
            }
        }

        @media (max-width: 519.98px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }

            .article-hero h1 {
                font-size: 1.5rem;
                letter-spacing: 0.2px;
            }

            .article-breadcrumb {
                font-size: 0.75rem;
                gap: 6px;
            }

            .article-main-content {
                padding: 16px 12px;
            }

            .article-main-content .article-cover img {
                height: 170px;
            }

            .article-body h2 {
                font-size: 1.25rem;
            }

            .article-body blockquote {
                padding: 14px 16px;
                font-size: 0.9rem;
            }

            .sidebar-card {
                padding: 18px;
            }

            .footer-brand {
                font-size: 1.2rem;
            }
        }

/* roulang page: category2 */
:root {
            --bg-deep: #0B1A30;
            --bg-dark: #0F0C20;
            --bg-card: #111A2E;
            --accent-cyan: #00F0FF;
            --accent-lime: #CCFF00;
            --accent-pink: #FF007F;
            --text-primary: #FFFFFF;
            --text-secondary: #A6ACAF;
            --text-muted: #6B7280;
            --border-neon: rgba(0, 240, 255, 0.35);
            --border-subtle: rgba(255, 255, 255, 0.08);
            --shadow-neon: 0 0 18px rgba(0, 240, 255, 0.25);
            --shadow-lime: 0 0 16px rgba(204, 255, 0, 0.25);
            --shadow-pink: 0 0 16px rgba(255, 0, 127, 0.25);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 24px;
            --radius-xl: 32px;
            --spacing-section: 88px;
            --spacing-mobile: 56px;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-display: 'Be Vietnam Pro', 'Inter', 'Segoe UI', sans-serif;
        }

        * {
            box-sizing: border-box;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: var(--font-body);
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.65;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        a {
            text-decoration: none;
            color: var(--accent-cyan);
            transition: color 0.25s ease, opacity 0.25s ease;
        }

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

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

        button {
            cursor: pointer;
            transition: all 0.3s ease;
        }

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

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        /* ===== HEADER & NAV ===== */
        .site-header {
            background: rgba(15, 12, 32, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
        }

        .navbar {
            padding: 14px 0;
            background: transparent;
        }

        .navbar-brand {
            display: flex;
            align-items: center;
            gap: 10px;
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-primary);
            letter-spacing: -0.01em;
            transition: color 0.3s ease;
        }

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

        .brand-icon {
            color: var(--accent-cyan);
            font-size: 1.6rem;
            filter: drop-shadow(0 0 8px rgba(0, 240, 255, 0.7));
        }

        .navbar-nav .nav-link {
            color: var(--text-secondary);
            font-weight: 500;
            font-size: 0.95rem;
            padding: 8px 16px !important;
            border-radius: 50px;
            transition: all 0.3s ease;
            position: relative;
        }

        .navbar-nav .nav-link:hover {
            color: var(--text-primary);
            background: rgba(255, 255, 255, 0.06);
        }

        .navbar-nav .nav-link.active {
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.1);
            box-shadow: inset 0 0 0 1px rgba(0, 240, 255, 0.25);
        }

        .btn-login-nav {
            color: var(--text-primary);
            font-weight: 600;
            font-size: 0.9rem;
            padding: 9px 20px;
            border-radius: 50px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            background: transparent;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-login-nav:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
        }

        .btn-signup-nav {
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 0.9rem;
            padding: 9px 22px;
            border-radius: 50px;
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            border: none;
            box-shadow: var(--shadow-neon);
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-signup-nav:hover {
            transform: translateY(-2px);
            box-shadow: 0 0 26px rgba(0, 240, 255, 0.5);
            color: var(--bg-dark);
        }

        .navbar-toggler {
            border: 1px solid rgba(255, 255, 255, 0.2);
            border-radius: 10px;
            padding: 8px 12px;
            background: rgba(255, 255, 255, 0.05);
        }

        .navbar-toggler-icon {
            background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%2300F0FF' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
        }

        /* ===== HERO ===== */
        .hero-banner {
            background: linear-gradient(135deg, #0F0C20 0%, #0B1A30 55%, #0D1F35 100%);
            padding: 56px 0 48px;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

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

        .hero-banner::before {
            content: '';
            position: absolute;
            bottom: -40%;
            left: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(204, 255, 0, 0.06), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(204, 255, 0, 0.12);
            border: 1px solid rgba(204, 255, 0, 0.35);
            color: var(--accent-lime);
            font-weight: 600;
            font-size: 0.85rem;
            padding: 8px 18px;
            border-radius: 50px;
            letter-spacing: 0.02em;
            margin-bottom: 20px;
            text-transform: uppercase;
        }

        .hero-badge i {
            font-size: 0.9rem;
        }

        .hero-title {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2.8rem;
            line-height: 1.15;
            letter-spacing: -0.02em;
            margin-bottom: 18px;
            color: var(--text-primary);
            max-width: 800px;
        }

        .hero-title .highlight {
            color: var(--accent-cyan);
            text-shadow: 0 0 24px rgba(0, 240, 255, 0.5);
        }

        .hero-subtitle {
            font-size: 1.1rem;
            color: var(--text-secondary);
            max-width: 700px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

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

        .btn-primary-neon {
            background: linear-gradient(135deg, var(--accent-cyan), #00B8D4);
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 1rem;
            padding: 14px 32px;
            border-radius: 50px;
            border: none;
            box-shadow: var(--shadow-neon);
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-primary-neon:hover {
            transform: translateY(-3px);
            box-shadow: 0 0 32px rgba(0, 240, 255, 0.55);
            color: var(--bg-dark);
        }

        .btn-outline-neon {
            background: transparent;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 1rem;
            padding: 14px 28px;
            border-radius: 50px;
            border: 1px solid var(--border-neon);
            transition: all 0.35s ease;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-outline-neon:hover {
            background: rgba(0, 240, 255, 0.1);
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-neon);
            color: var(--accent-cyan);
        }

        .hero-stats-row {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            margin-top: 36px;
            padding-top: 28px;
            border-top: 1px solid var(--border-subtle);
        }

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

        .hero-stat-value {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.7rem;
            color: var(--accent-lime);
            line-height: 1.2;
        }

        .hero-stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ===== SECTION SHARED ===== */
        .section-block {
            padding: var(--spacing-section) 0;
            position: relative;
        }

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

        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent-cyan);
            margin-bottom: 12px;
        }

        .section-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 2rem;
            line-height: 1.25;
            letter-spacing: -0.01em;
            margin-bottom: 16px;
            color: var(--text-primary);
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
            margin-bottom: 36px;
        }

        /* ===== MAGAZINE GRID LAYOUT ===== */
        .magazine-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 28px;
            align-items: start;
        }

        .magazine-feature {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all 0.4s ease;
            position: relative;
        }

        .magazine-feature:hover {
            border-color: var(--border-neon);
            box-shadow: var(--shadow-neon);
            transform: translateY(-4px);
        }

        .magazine-feature-img {
            width: 100%;
            height: 280px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-subtle);
        }

        .magazine-feature-body {
            padding: 28px 30px;
        }

        .magazine-feature-tag {
            display: inline-block;
            background: rgba(0, 240, 255, 0.12);
            color: var(--accent-cyan);
            font-size: 0.75rem;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 0.06em;
            padding: 5px 14px;
            border-radius: 50px;
            margin-bottom: 14px;
        }

        .magazine-feature-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.45rem;
            line-height: 1.35;
            margin-bottom: 12px;
            color: var(--text-primary);
        }

        .magazine-feature-text {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 20px;
        }

        .magazine-side {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .magazine-side-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 22px 24px;
            transition: all 0.35s ease;
        }

        .magazine-side-card:hover {
            border-color: rgba(204, 255, 0, 0.35);
            box-shadow: var(--shadow-lime);
            transform: translateX(4px);
        }

        .magazine-side-card .side-icon {
            font-size: 1.6rem;
            color: var(--accent-lime);
            margin-bottom: 12px;
        }

        .magazine-side-card h3 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
            color: var(--text-primary);
        }

        .magazine-side-card p {
            font-size: 0.88rem;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* ===== GIFTCODE STRIP ===== */
        .giftcode-strip {
            background: linear-gradient(135deg, rgba(204, 255, 0, 0.08), rgba(0, 240, 255, 0.06));
            border: 1px solid rgba(204, 255, 0, 0.25);
            border-radius: var(--radius-md);
            padding: 24px 28px;
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 28px;
        }

        .giftcode-strip .gift-icon {
            font-size: 2rem;
            color: var(--accent-lime);
        }

        .giftcode-strip .gift-info {
            flex: 1;
            min-width: 200px;
        }

        .giftcode-strip .gift-info h4 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 4px;
            color: var(--text-primary);
        }

        .giftcode-strip .gift-info p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        .giftcode-strip .code-box {
            background: rgba(0, 0, 0, 0.4);
            border: 1px dashed rgba(204, 255, 0, 0.5);
            border-radius: 8px;
            padding: 10px 20px;
            font-family: 'Courier New', monospace;
            font-weight: 700;
            font-size: 1rem;
            color: var(--accent-lime);
            letter-spacing: 0.08em;
        }

        .btn-copy-code {
            background: var(--accent-lime);
            color: var(--bg-dark);
            font-weight: 700;
            font-size: 0.85rem;
            padding: 10px 20px;
            border-radius: 50px;
            border: none;
            transition: all 0.3s ease;
            white-space: nowrap;
        }

        .btn-copy-code:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lime);
        }

        /* ===== TIP CARDS (MAGAZINE STYLE) ===== */
        .tips-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .tip-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 28px 26px;
            transition: all 0.4s ease;
            position: relative;
            overflow: hidden;
        }

        .tip-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 0.4s ease;
        }

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

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

        .tip-number {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2.5rem;
            color: rgba(0, 240, 255, 0.2);
            line-height: 1;
            margin-bottom: 14px;
        }

        .tip-card h3 {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.15rem;
            margin-bottom: 10px;
            color: var(--text-primary);
        }

        .tip-card p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 0;
        }

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

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: rgba(0, 240, 255, 0.3);
        }

        .faq-question {
            padding: 20px 24px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            font-weight: 600;
            font-size: 1rem;
            color: var(--text-primary);
            transition: all 0.3s ease;
            user-select: none;
        }

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

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(0, 240, 255, 0.1);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 0.85rem;
            transition: transform 0.35s ease;
        }

        .faq-item.active .faq-question .faq-icon {
            transform: rotate(180deg);
            background: rgba(204, 255, 0, 0.15);
            color: var(--accent-lime);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.45s ease, padding 0.35s ease;
            padding: 0 24px;
            font-size: 0.92rem;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 22px;
        }

        /* ===== CTA SECTION ===== */
        .cta-section {
            background: linear-gradient(135deg, #0B1A30 0%, #0F0C20 100%);
            border: 1px solid var(--border-neon);
            border-radius: var(--radius-lg);
            padding: 52px 44px;
            position: relative;
            overflow: hidden;
        }

        .cta-section::after {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(0, 240, 255, 0.12), transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-section h2 {
            font-family: var(--font-display);
            font-weight: 800;
            font-size: 2.2rem;
            line-height: 1.25;
            margin-bottom: 14px;
            color: var(--text-primary);
        }

        .cta-section p {
            font-size: 1.05rem;
            color: var(--text-secondary);
            max-width: 600px;
            line-height: 1.7;
            margin-bottom: 28px;
        }

        /* ===== FOOTER ===== */
        .site-footer {
            background: #0A0815;
            border-top: 1px solid var(--border-subtle);
            padding: 56px 0 28px;
            margin-top: 0;
        }

        .footer-brand {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1.35rem;
            color: var(--text-primary);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
        }

        .footer-desc {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 18px;
        }

        .footer-trust-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(0, 240, 255, 0.08);
            border: 1px solid rgba(0, 240, 255, 0.25);
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 600;
            padding: 8px 16px;
            border-radius: 50px;
        }

        .footer-title {
            font-family: var(--font-display);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
            margin-bottom: 16px;
            text-transform: uppercase;
            letter-spacing: 0.04em;
        }

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

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

        .footer-links a {
            color: var(--text-secondary);
            font-size: 0.88rem;
            transition: color 0.25s ease;
        }

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

        .footer-payment {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .payment-badge {
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            font-size: 0.78rem;
            font-weight: 600;
            padding: 8px 14px;
            border-radius: 8px;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all 0.3s ease;
        }

        .payment-badge:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            background: rgba(0, 240, 255, 0.06);
        }

        .footer-bottom {
            border-top: 1px solid var(--border-subtle);
            margin-top: 36px;
            padding-top: 20px;
            text-align: center;
            font-size: 0.82rem;
            color: var(--text-muted);
        }

        /* ===== FAB ===== */
        .fab-support {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 999;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(15, 12, 32, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            transition: all 0.35s ease;
            animation: fabPulse 2.5s ease-in-out infinite;
            text-decoration: none;
        }

        .fab-support:hover {
            transform: scale(1.15);
            color: var(--accent-lime);
            box-shadow: 0 0 28px rgba(204, 255, 0, 0.55);
            animation-play-state: paused;
        }

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

        .fab-notification {
            position: absolute;
            top: -2px;
            right: -2px;
            width: 14px;
            height: 14px;
            background: var(--accent-pink);
            border-radius: 50%;
            border: 2px solid var(--bg-dark);
            animation: blinkDot 1.5s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%, 100% {
                box-shadow: 0 0 18px rgba(0, 240, 255, 0.4);
            }
            50% {
                box-shadow: 0 0 28px rgba(0, 240, 255, 0.7);
            }
        }

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

        /* ===== RESPONSIVE ===== */
        @media (max-width: 1024px) {
            .hero-title {
                font-size: 2.3rem;
            }
            .tips-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .magazine-grid {
                grid-template-columns: 1fr;
            }
            .magazine-feature-img {
                height: 220px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --spacing-section: 64px;
            }
            .navbar-brand {
                font-size: 1.15rem;
            }
            .navbar-nav {
                padding: 16px 0;
            }
            .navbar-nav .nav-link {
                padding: 10px 16px !important;
                font-size: 0.95rem;
            }
            .btn-login-nav,
            .btn-signup-nav {
                font-size: 0.85rem;
                padding: 8px 16px;
                display: inline-block;
                margin-top: 8px;
            }
            .hero-banner {
                padding: 40px 0 36px;
            }
            .hero-title {
                font-size: 1.9rem;
            }
            .hero-subtitle {
                font-size: 1rem;
            }
            .hero-stats-row {
                gap: 20px;
            }
            .hero-stat-value {
                font-size: 1.4rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
            .tips-grid {
                grid-template-columns: 1fr;
            }
            .giftcode-strip {
                flex-direction: column;
                align-items: flex-start;
                padding: 20px;
            }
            .cta-section {
                padding: 36px 24px;
            }
            .cta-section h2 {
                font-size: 1.7rem;
            }
            .site-footer {
                padding: 40px 0 20px;
            }
            .fab-support {
                width: 46px;
                height: 46px;
                font-size: 1.1rem;
                bottom: 80px;
                left: 12px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 1.6rem;
            }
            .hero-badge {
                font-size: 0.75rem;
                padding: 6px 14px;
            }
            .btn-primary-neon,
            .btn-outline-neon {
                font-size: 0.9rem;
                padding: 12px 22px;
                width: 100%;
                justify-content: center;
            }
            .hero-actions {
                flex-direction: column;
                width: 100%;
            }
            .magazine-feature-body {
                padding: 20px;
            }
            .magazine-feature-title {
                font-size: 1.25rem;
            }
            .section-title {
                font-size: 1.4rem;
            }
            .tip-card {
                padding: 22px 20px;
            }
            .faq-question {
                padding: 16px 18px;
                font-size: 0.9rem;
            }
            .faq-answer {
                font-size: 0.85rem;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
        }