/* roulang page: index */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: 
                radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }

        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        /* Hero Section */
        .hero {
            padding: 5rem 0 4rem;
            position: relative;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-1.jpg') center/cover no-repeat;
            opacity: 0.12;
            z-index: 0;
        }

        .hero .container {
            display: flex;
            align-items: center;
            gap: 3.5rem;
            position: relative;
            z-index: 1;
        }

        .hero-content {
            flex: 1 1 55%;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--border-color);
            padding: 0.4rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
            font-weight: 500;
        }

        .hero h1 {
            font-size: clamp(2.2rem, 5vw, 3.5rem);
            font-weight: 800;
            line-height: 1.15;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #FFFFFF, #94A3B8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.03em;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 600px;
        }

        .hero-buttons {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, #2563EB, #1E40AF);
            color: #fff;
            padding: 0.8rem 2rem;
            border-radius: 3rem;
            border: none;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: var(--shadow-glow);
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.5);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.8rem 2rem;
            border-radius: 3rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 1rem;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
        }
        .btn-secondary:hover {
            background: rgba(37, 99, 235, 0.1);
            border-color: var(--accent-cyan);
        }

        .hero-panel {
            flex: 1 1 45%;
            background: rgba(17, 24, 39, 0.7);
            backdrop-filter: blur(12px);
            border: 1px solid rgba(37, 99, 235, 0.25);
            border-radius: var(--radius-lg);
            padding: 2rem;
            box-shadow: var(--shadow-glow);
        }

        .leaderboard-header {
            font-size: 1.15rem;
            font-weight: 700;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .leaderboard-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.9rem;
        }

        .leaderboard-item {
            display: flex;
            align-items: center;
            gap: 1rem;
            padding: 0.7rem 1rem;
            background: rgba(37, 99, 235, 0.08);
            border-radius: 0.75rem;
            border: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition);
        }
        .leaderboard-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 10px rgba(56, 189, 248, 0.2);
        }

        .leaderboard-rank {
            font-weight: 800;
            font-size: 1.1rem;
            color: var(--accent-cyan);
            min-width: 28px;
        }

        .leaderboard-name {
            font-weight: 500;
            flex: 1;
        }

        .leaderboard-amount {
            font-weight: 700;
            color: #F59E0B;
            font-size: 0.95rem;
        }

        /* Common Section Styles */
        section {
            padding: 4rem 0;
        }

        .section-header {
            margin-bottom: 3rem;
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            margin-bottom: 0.75rem;
        }

        .section-title {
            font-size: clamp(1.8rem, 3.5vw, 2.5rem);
            font-weight: 700;
            line-height: 1.2;
            margin-bottom: 1rem;
        }

        .section-desc {
            color: var(--text-secondary);
            font-size: 1.05rem;
            line-height: 1.7;
            max-width: 750px;
        }

        /* Search / Entry Bar */
        .search-entry-bar {
            background: rgba(17, 24, 39, 0.6);
            border: 1px solid var(--border-color);
            border-radius: 3rem;
            padding: 0.6rem 1.5rem;
            display: flex;
            align-items: center;
            gap: 1rem;
            max-width: 550px;
            backdrop-filter: blur(12px);
            transition: var(--transition);
        }
        .search-entry-bar:focus-within {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
        }
        .search-entry-bar input {
            background: transparent;
            border: none;
            color: var(--text-primary);
            flex: 1;
            font-size: 0.95rem;
            outline: none;
        }
        .search-entry-bar button {
            background: var(--accent-blue);
            border: none;
            color: #fff;
            padding: 0.55rem 1.4rem;
            border-radius: 2rem;
            cursor: pointer;
            font-weight: 600;
            transition: var(--transition);
        }
        .search-entry-bar button:hover {
            background: #1D4ED8;
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.5);
        }

        /* Category Matrix Grid */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
            gap: 1.5rem;
        }

        .category-card {
            background: rgba(17, 24, 39, 0.7);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            text-align: left;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            text-decoration: none;
            color: inherit;
            display: block;
        }
        .category-card::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at center, rgba(56, 189, 248, 0.06) 0%, transparent 60%);
            pointer-events: none;
        }
        .category-card:hover {
            transform: translateY(-4px);
            border-color: var(--accent-cyan);
            box-shadow: 0 8px 30px rgba(37, 99, 235, 0.3);
        }
        .category-card-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
            position: relative;
            z-index: 1;
        }
        .category-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.7rem;
            position: relative;
            z-index: 1;
        }
        .category-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
            position: relative;
            z-index: 1;
        }

        /* Featured / Curated Grid */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 1.75rem;
        }

        .game-card {
            background: rgba(17, 24, 39, 0.65);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            backdrop-filter: blur(8px);
        }
        .game-card:hover {
            transform: translateY(-6px);
            border-color: var(--accent-cyan);
            box-shadow: 0 12px 35px rgba(37, 99, 235, 0.35);
        }
        .game-card-image {
            height: 180px;
            background-size: cover;
            background-position: center;
            position: relative;
        }
        .game-card-tag {
            position: absolute;
            top: 12px;
            right: 12px;
            background: #DC2626;
            color: #fff;
            padding: 0.3rem 0.9rem;
            border-radius: 1rem;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.03em;
        }
        .game-card-body {
            padding: 1.25rem;
        }
        .game-card-body h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
        }
        .game-card-body p {
            color: var(--text-secondary);
            font-size: 0.88rem;
            line-height: 1.5;
            margin-bottom: 1rem;
        }
        .game-card-meta {
            display: flex;
            justify-content: space-between;
            color: var(--accent-cyan);
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* Rankings */
        .rankings-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 1rem;
            max-width: 850px;
        }
        .ranking-item {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            padding: 1.15rem 1.5rem;
            background: rgba(17, 24, 39, 0.55);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            transition: var(--transition);
        }
        .ranking-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(56, 189, 248, 0.15);
        }
        .ranking-pos {
            font-size: 1.5rem;
            font-weight: 800;
            color: var(--accent-cyan);
            min-width: 40px;
        }
        .ranking-info {
            flex: 1;
        }
        .ranking-info h4 {
            font-weight: 600;
            margin-bottom: 0.2rem;
        }
        .ranking-info span {
            color: var(--text-secondary);
            font-size: 0.85rem;
        }
        .ranking-score {
            font-weight: 700;
            color: #F59E0B;
        }

        /* Resource Center */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.5rem;
        }
        .resource-card {
            background: rgba(17, 24, 39, 0.6);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.8rem;
            text-align: left;
            transition: var(--transition);
            text-decoration: none;
            color: inherit;
            display: block;
        }
        .resource-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-3px);
        }
        .resource-card i {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
            display: block;
        }
        .resource-card h4 {
            font-weight: 700;
            margin-bottom: 0.5rem;
        }
        .resource-card p {
            color: var(--text-secondary);
            font-size: 0.88rem;
        }

        /* CMS / News Feed */
        .news-feed {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 2.5rem;
            align-items: start;
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }
        .news-item {
            display: flex;
            gap: 1.25rem;
            padding: 1rem;
            background: rgba(17, 24, 39, 0.5);
            border-radius: var(--radius-md);
            border: 1px solid transparent;
            transition: var(--transition);
            text-decoration: none;
            color: inherit;
        }
        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.15);
        }
        .news-item-thumb {
            width: 90px;
            height: 70px;
            border-radius: 0.6rem;
            background-size: cover;
            background-position: center;
            flex-shrink: 0;
        }
        .news-item-content h4 {
            font-weight: 600;
            font-size: 0.95rem;
            margin-bottom: 0.3rem;
        }
        .news-item-content .news-date {
            font-size: 0.8rem;
            color: var(--accent-cyan);
        }
        .news-item-content p {
            font-size: 0.82rem;
            color: var(--text-secondary);
            margin-top: 0.3rem;
            line-height: 1.4;
        }

        .news-sidebar {
            background: rgba(17, 24, 39, 0.6);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            backdrop-filter: blur(8px);
        }
        .news-sidebar h4 {
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--accent-cyan);
        }
        .sidebar-item {
            padding: 0.7rem 0;
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            font-size: 0.9rem;
        }
        .sidebar-item:last-child {
            border-bottom: none;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 0.7rem;
        }
        .tag-pill {
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid var(--border-color);
            padding: 0.5rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            color: var(--text-secondary);
            transition: var(--transition);
            text-decoration: none;
            white-space: nowrap;
        }
        .tag-pill:hover {
            background: rgba(37, 99, 235, 0.3);
            border-color: var(--accent-cyan);
            color: var(--text-primary);
        }

        /* Safety Section */
        .safety-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 1.75rem;
        }
        .safety-card {
            text-align: left;
            padding: 2rem 1.5rem;
            background: rgba(17, 24, 39, 0.5);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }
        .safety-card i {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1rem;
            display: block;
        }
        .safety-card h4 {
            font-weight: 700;
            margin-bottom: 0.7rem;
        }
        .safety-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        /* Help Directory */
        .help-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
        }
        .help-card {
            padding: 1.8rem;
            background: rgba(17, 24, 39, 0.55);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            transition: var(--transition);
        }
        .help-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
        }
        .help-card h4 {
            font-weight: 700;
            margin-bottom: 0.6rem;
        }
        .help-card p {
            color: var(--text-secondary);
            font-size: 0.88rem;
        }

        /* Quick FAQ Accordion */
        .faq-accordion {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border-color);
            padding: 1.25rem 0;
        }
        .faq-question {
            font-weight: 700;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 1rem;
            transition: var(--transition);
        }
        .faq-question:hover {
            color: var(--accent-cyan);
        }
        .faq-answer {
            color: var(--text-secondary);
            margin-top: 0.8rem;
            line-height: 1.65;
            display: none;
        }
        .faq-item.active .faq-answer {
            display: block;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 90;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            border: 2px solid;
            border-image-slice: 1;
            border-image-source: linear-gradient(135deg, #A3E635, #06B6D4);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #06B6D4;
            font-size: 1.5rem;
            cursor: pointer;
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            transition: var(--transition);
            animation: fabPulse 2.5s infinite;
        }
        .fab:hover {
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.7);
        }
        @keyframes fabPulse {
            0%, 100% { box-shadow: 0 0 20px rgba(6, 182, 212, 0.45); }
            50% { box-shadow: 0 0 32px rgba(6, 182, 212, 0.7); }
        }

        /* Footer */
        footer {
            background: rgba(3, 7, 18, 0.9);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 2rem;
            margin-top: 3rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }
        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }
        .footer-col a,
        .footer-col p {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 0.6rem;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
            padding-top: 2rem;
            border-top: 1px solid rgba(37, 99, 235, 0.15);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero .container {
                flex-direction: column;
            }
            .news-feed {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 1.25rem;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.95);
                flex-direction: column;
                padding: 1.5rem;
                display: none;
                backdrop-filter: blur(15px);
            }
            .nav-links.open {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                gap: 0.5rem;
            }
            .btn-login, .btn-signup {
                padding: 0.5rem 1.2rem;
                font-size: 0.85rem;
            }
            .hero {
                padding: 3rem 0 2rem;
            }
        }

        @media (max-width: 520px) {
            .hero h1 {
                font-size: 1.8rem;
            }
            .btn-primary, .btn-secondary {
                padding: 0.65rem 1.5rem;
                font-size: 0.9rem;
            }
            .category-grid,
            .featured-grid,
            .safety-grid,
            .help-grid {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: article */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        .article-hero {
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
            border-bottom: 1px solid var(--border-color);
        }

        .article-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

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

        .article-meta {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            margin-bottom: 1.5rem;
            color: var(--text-secondary);
            font-size: 0.9rem;
        }

        .article-meta .category-tag {
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-cyan);
            padding: 0.35rem 1rem;
            border-radius: 2rem;
            font-weight: 600;
            font-size: 0.85rem;
            border: 1px solid var(--border-color);
        }

        .article-meta time {
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }

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

        .article-hero h1 {
            font-size: 2.75rem;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #F8FAFC, #94A3B8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }

        .article-excerpt {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            max-width: 800px;
        }

        .article-body {
            padding: 3rem 0 4rem;
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 3rem;
            align-items: start;
        }

        .article-main {
            min-width: 0;
        }

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

        .article-content h2 {
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 2.5rem 0 1rem;
            padding-bottom: 0.75rem;
            border-bottom: 2px solid var(--border-color);
        }

        .article-content h3 {
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-primary);
            margin: 2rem 0 0.75rem;
        }

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

        .article-content ul,
        .article-content ol {
            margin: 1rem 0 1.5rem 1.5rem;
        }

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

        .article-content strong {
            color: var(--text-holo);
            font-weight: 600;
        }

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

        .article-content a:hover {
            color: #7DD3FC;
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent-blue);
            background: rgba(37, 99, 235, 0.08);
            padding: 1.25rem 1.5rem;
            margin: 1.5rem 0;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-primary);
            font-style: italic;
        }

        .article-sidebar {
            position: sticky;
            top: 6rem;
        }

        .sidebar-card {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            margin-bottom: 1.5rem;
            transition: var(--transition);
        }

        .sidebar-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: var(--shadow-cyan);
        }

        .sidebar-card h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }

        .sidebar-card h4 i {
            color: var(--accent-cyan);
        }

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

        .sidebar-card ul li {
            margin-bottom: 0.75rem;
        }

        .sidebar-card ul li a {
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
            display: block;
            padding: 0.4rem 0;
        }

        .sidebar-card ul li a:hover {
            color: var(--accent-cyan);
            padding-left: 0.5rem;
        }

        .cta-card {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            text-align: center;
            transition: var(--transition);
        }

        .cta-card:hover {
            box-shadow: var(--shadow-glow);
            border-color: var(--accent-cyan);
        }

        .cta-card h4 {
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .cta-card p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            margin-bottom: 1.5rem;
            line-height: 1.5;
        }

        .btn-cta-full {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            color: #fff;
            padding: 0.7rem 2rem;
            border-radius: 2rem;
            font-weight: 700;
            text-decoration: none;
            font-size: 0.95rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            transition: var(--transition);
            width: 100%;
        }

        .btn-cta-full:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
        }

        .related-posts {
            padding: 3rem 0 4rem;
            background: rgba(3, 7, 18, 0.4);
            border-top: 1px solid var(--border-color);
        }

        .section-title {
            font-size: 1.65rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 2rem;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

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

        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .related-card {
            background: var(--bg-card);
            backdrop-filter: blur(15px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
            text-decoration: none;
            display: block;
        }

        .related-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-3px);
        }

        .related-card-img {
            height: 160px;
            background-size: cover;
            background-position: center;
            position: relative;
        }

        .related-card-body {
            padding: 1.25rem;
        }

        .related-card-body h5 {
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .related-card-body p {
            font-size: 0.85rem;
            color: var(--text-secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .not-found-state {
            text-align: center;
            padding: 5rem 2rem;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        .not-found-state i {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 1.5rem;
            display: block;
        }

        .not-found-state h3 {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1rem;
        }

        .not-found-state p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
        }

        .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            color: #fff;
            padding: 0.65rem 2rem;
            border-radius: 2rem;
            font-weight: 700;
            text-decoration: none;
            font-size: 0.95rem;
            transition: var(--transition);
        }

        .btn-back-home:hover {
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-2px);
        }

        footer {
            background: rgba(3, 7, 18, 0.95);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 3.5rem 0 2rem;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 1.25rem;
        }

        .footer-col p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.7;
        }

        .footer-col a {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            font-size: 0.9rem;
            margin-bottom: 0.6rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(37, 99, 235, 0.15);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .fab-left {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 22px rgba(6, 182, 212, 0.45);
            animation: fabPulse 2.4s ease-in-out infinite;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 3px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .fab-left i {
            font-size: 1.5rem;
            color: #38BDF8;
            transition: var(--transition);
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.15);
            box-shadow: 0 0 35px rgba(6, 182, 212, 0.7);
        }

        .fab-left:hover i {
            color: #A3E635;
        }

        @keyframes fabPulse {
            0%,
            100% {
                opacity: 0.75;
                transform: translateY(0);
            }
            50% {
                opacity: 1;
                transform: translateY(-5px);
            }
        }

        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }
            .article-sidebar {
                position: static;
                display: grid;
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .article-hero h1 {
                font-size: 2.25rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(25px);
                padding: 1.5rem;
                border-bottom: 1px solid var(--border-color);
                gap: 1rem;
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }
            .article-hero h1 {
                font-size: 1.85rem;
            }
            .article-sidebar {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.5rem;
            }
            .logo {
                font-size: 1.15rem;
            }
            .article-content {
                font-size: 0.98rem;
            }
        }

        @media (max-width: 520px) {
            :root {
                --container-padding: 1rem;
            }
            .article-hero {
                padding: 2.5rem 0 2rem;
            }
            .article-hero h1 {
                font-size: 1.55rem;
            }
            .article-excerpt {
                font-size: 1rem;
            }
            .section-title {
                font-size: 1.35rem;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 1rem;
                bottom: 5rem;
            }
            .fab-left i {
                font-size: 1.25rem;
            }
        }

/* roulang page: category1 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
        }

        @media (max-width: 768px) {
            :root {
                --container-padding: 1.25rem;
            }
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        @media (max-width: 1024px) {
            .nav-links {
                gap: 1.2rem;
            }
            .nav-links a {
                font-size: 0.85rem;
            }
            .logo {
                font-size: 1.15rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                flex-direction: column;
                background: rgba(3, 7, 18, 0.95);
                backdrop-filter: blur(20px);
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            }
            .nav-links.active-mobile {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
                order: 3;
            }
            .nav-actions {
                order: 2;
            }
            .logo {
                order: 1;
                flex: 1;
            }
            .nav-container {
                flex-wrap: wrap;
                gap: 0.75rem;
            }
        }

        /* Hero Category */
        .hero-category {
            padding: 3.5rem 0 2.5rem;
            position: relative;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-2.jpg') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

        .hero-category .container {
            display: flex;
            align-items: center;
            gap: 3rem;
            position: relative;
            z-index: 1;
        }

        .hero-cat-content {
            flex: 1 1 55%;
        }

        .hero-cat-badge {
            display: inline-flex;
            align-items: center;
            gap: 0.5rem;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.35);
            color: var(--accent-cyan);
            padding: 0.4rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
            letter-spacing: 0.04em;
        }

        .hero-cat-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #FFFFFF, #94A3B8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-cat-content p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .hero-cat-cta {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.75rem 2rem;
            border-radius: 2.5rem;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.5);
            text-decoration: none;
            display: inline-block;
        }

        .btn-primary-glow:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 30px rgba(37, 99, 235, 0.7);
            transform: translateY(-2px);
        }

        .btn-outline-cyan {
            background: transparent;
            border: 1.5px solid var(--accent-cyan);
            color: var(--accent-cyan);
            padding: 0.75rem 2rem;
            border-radius: 2.5rem;
            font-weight: 600;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
        }

        .btn-outline-cyan:hover {
            background: rgba(56, 189, 248, 0.1);
            box-shadow: 0 0 15px rgba(56, 189, 248, 0.3);
        }

        .hero-cat-visual {
            flex: 1 1 45%;
            display: flex;
            justify-content: center;
            align-items: center;
        }

        .hero-cat-visual img {
            max-width: 100%;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-cyan);
        }

        @media (max-width: 768px) {
            .hero-category .container {
                flex-direction: column;
                text-align: left;
            }
            .hero-cat-content h1 {
                font-size: 2rem;
            }
            .hero-cat-content p {
                font-size: 1rem;
                max-width: 100%;
            }
            .hero-cat-visual img {
                max-width: 85%;
            }
        }

        /* Section Spacing */
        .section {
            padding: 4rem 0;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
            position: relative;
            display: inline-block;
        }

        .section-subtitle {
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            font-size: 1.05rem;
            max-width: 650px;
        }

        /* Strategy Cards Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.75rem;
        }

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.75rem;
            transition: var(--transition);
            backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }

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

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-cyan), var(--accent-blue));
        }

        .strategy-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
            display: block;
        }

        .strategy-card h3 {
            font-size: 1.35rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

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

        .strategy-tag {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            color: var(--accent-cyan);
            padding: 0.2rem 0.8rem;
            border-radius: 1rem;
            font-size: 0.8rem;
            font-weight: 600;
            margin-top: 1rem;
        }

        /* Tips Table - Glassmorphism */
        .tips-glass-table {
            background: rgba(17, 24, 39, 0.6);
            backdrop-filter: blur(15px);
            border: 1px solid rgba(37, 99, 235, 0.25);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-glow);
        }

        .tips-glass-table table {
            width: 100%;
            border-collapse: collapse;
        }

        .tips-glass-table th {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-holo);
            font-weight: 700;
            padding: 1rem 1.5rem;
            text-align: left;
            font-size: 0.9rem;
            text-transform: uppercase;
            letter-spacing: 0.05em;
            border-bottom: 1px solid var(--border-color);
        }

        .tips-glass-table td {
            padding: 1rem 1.5rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(37, 99, 235, 0.08);
            font-size: 0.95rem;
        }

        .tips-glass-table tbody tr:hover {
            background: rgba(37, 99, 235, 0.05);
        }

        @media (max-width: 600px) {
            .tips-glass-table {
                overflow-x: auto;
            }
            .tips-glass-table table {
                min-width: 600px;
            }
        }

        /* News list */
        .news-list-vertical {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
        }

        .news-item {
            display: flex;
            gap: 1.25rem;
            background: rgba(17, 24, 39, 0.5);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-md);
            padding: 1.25rem;
            transition: var(--transition);
            align-items: flex-start;
            text-decoration: none;
            color: inherit;
        }

        .news-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateX(4px);
        }

        .news-item-img {
            width: 100px;
            height: 70px;
            object-fit: cover;
            border-radius: 0.5rem;
            flex-shrink: 0;
            background: #1e293b;
        }

        .news-item-info h4 {
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.3rem;
            font-size: 1.05rem;
        }

        .news-item-info p {
            color: var(--text-secondary);
            font-size: 0.85rem;
            margin-bottom: 0.3rem;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-item-meta {
            display: flex;
            gap: 1rem;
            font-size: 0.75rem;
            color: #64748b;
        }

        @media (max-width: 500px) {
            .news-item {
                flex-direction: column;
            }
            .news-item-img {
                width: 100%;
                height: 140px;
            }
        }

        /* CTA Section */
        .cta-glow-section {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.15), rgba(56, 189, 248, 0.08));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 3.5rem 2rem;
            text-align: center;
            backdrop-filter: blur(10px);
            margin-top: 1rem;
        }

        .cta-glow-section h2 {
            font-size: 2.2rem;
            font-weight: 800;
            margin-bottom: 1rem;
        }

        .cta-glow-section p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 2rem;
        }

        /* Footer */
        footer {
            background: rgba(3, 7, 18, 0.9);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 3.5rem 0 1.5rem;
            margin-top: 4rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 2.5rem;
        }

        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 1.25rem;
            font-size: 1.15rem;
            color: var(--text-primary);
        }

        .footer-col a,
        .footer-col p {
            display: block;
            color: var(--text-secondary);
            text-decoration: none;
            margin-bottom: 0.7rem;
            font-size: 0.9rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            text-align: center;
            margin-top: 2.5rem;
            padding-top: 1.5rem;
            border-top: 1px solid rgba(37, 99, 235, 0.15);
            color: #64748b;
            font-size: 0.85rem;
        }

        /* FAB Left */
        .fab-left-cyber {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(7, 7, 13, 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: 1.5rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 18px rgba(56, 189, 248, 0.35);
            animation: fabPulse 2.5s infinite;
        }

        .fab-left-cyber::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 2px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
            z-index: -1;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 18px rgba(56, 189, 248, 0.35);
            }
            50% {
                box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            }
        }

        .fab-left-cyber:hover {
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(56, 189, 248, 0.7);
        }

        .fab-noti-dot {
            position: absolute;
            top: 6px;
            right: 6px;
            width: 10px;
            height: 10px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: dotBlink 1.2s infinite;
        }

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

        /* Responsive */
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .strategy-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

/* roulang page: category2 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
        }

        :root {
            --container-padding: 1.25rem;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

        /* Header & Navigation */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }

        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        /* Category Hero – Magazine Layout */
        .cat-hero {
            padding: 3.5rem 0 3rem;
            position: relative;
            overflow: hidden;
            background: rgba(8, 18, 41, 0.4);
            border-bottom: 1px solid var(--border-color);
        }

        .cat-hero .container {
            display: flex;
            align-items: center;
            gap: 3rem;
        }

        .cat-hero-content {
            flex: 1 1 55%;
        }

        .cat-hero-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--border-color);
            color: var(--accent-cyan);
            font-size: 0.85rem;
            font-weight: 600;
            padding: 0.4rem 1.2rem;
            border-radius: 2rem;
            margin-bottom: 1.5rem;
            letter-spacing: 0.03em;
        }

        .cat-hero-content h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #F8FAFC 0%, #A5C9FF 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -0.02em;
        }

        .cat-hero-content p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 2rem;
            max-width: 540px;
        }

        .cat-hero-stats {
            display: flex;
            gap: 2rem;
            margin-bottom: 2rem;
        }

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

        .stat-number {
            font-size: 2rem;
            font-weight: 800;
            color: var(--accent-cyan);
            display: block;
            line-height: 1;
        }

        .stat-label {
            font-size: 0.85rem;
            color: var(--text-secondary);
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .cat-hero-visual {
            flex: 1 1 45%;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-glow);
            display: flex;
            flex-direction: column;
            gap: 1rem;
        }

        .featured-tip {
            display: flex;
            gap: 1rem;
            padding: 1rem;
            background: rgba(37, 99, 235, 0.08);
            border-radius: var(--radius-md);
            border-left: 3px solid var(--accent-cyan);
            transition: var(--transition);
        }

        .featured-tip:hover {
            background: rgba(37, 99, 235, 0.15);
            transform: translateX(4px);
        }

        .tip-icon {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            flex-shrink: 0;
            margin-top: 0.2rem;
        }

        .tip-content h4 {
            font-size: 0.9rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.25rem;
        }

        .tip-content p {
            font-size: 0.8rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Section Spacing */
        .section {
            padding: 4rem 0;
        }

        .section-header {
            margin-bottom: 2.5rem;
        }

        .section-header h2 {
            font-size: 2rem;
            font-weight: 700;
            color: var(--text-primary);
            margin-bottom: 0.75rem;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
            max-width: 600px;
        }

        /* Strategy Grid */
        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }

        .strategy-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem 1.5rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(circle at top right, rgba(56, 189, 248, 0.05), transparent 60%);
            pointer-events: none;
        }

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

        .strategy-card .card-number {
            font-size: 3rem;
            font-weight: 900;
            color: rgba(37, 99, 235, 0.15);
            position: absolute;
            top: 1rem;
            right: 1.5rem;
            line-height: 1;
        }

        .strategy-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
            display: block;
        }

        .strategy-card h3 {
            font-size: 1.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
        }

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

        /* Scenario Cards */
        .scenario-list {
            display: flex;
            flex-direction: column;
            gap: 1.25rem;
            max-width: 900px;
        }

        .scenario-item {
            display: flex;
            gap: 1.5rem;
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            transition: var(--transition);
            align-items: flex-start;
        }

        .scenario-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-glow);
        }

        .scenario-index {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.2rem;
            color: #fff;
        }

        .scenario-body h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

        .scenario-body p {
            font-size: 0.95rem;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Video/Evidence Panel */
        .evidence-panel {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2rem;
            align-items: center;
        }

        .evidence-image {
            width: 100%;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
            box-shadow: var(--shadow-glow);
        }

        .evidence-content h3 {
            font-size: 1.6rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .evidence-content p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            line-height: 1.7;
        }

        .evidence-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 0.75rem;
        }

        .evidence-list li {
            display: flex;
            align-items: center;
            gap: 0.6rem;
            color: var(--text-secondary);
            font-size: 0.95rem;
        }

        .evidence-list li i {
            color: #10B981;
            font-size: 1rem;
        }

        /* Comparison Table */
        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-color);
        }

        .comparison-table th {
            background: rgba(37, 99, 235, 0.2);
            color: var(--text-primary);
            padding: 1rem 1.5rem;
            text-align: left;
            font-weight: 700;
            font-size: 0.95rem;
            border-bottom: 1px solid var(--border-color);
        }

        .comparison-table td {
            padding: 1rem 1.5rem;
            color: var(--text-secondary);
            border-bottom: 1px solid rgba(37, 99, 235, 0.1);
            font-size: 0.95rem;
        }

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

        .tag-green {
            display: inline-block;
            background: rgba(16, 185, 129, 0.2);
            color: #10B981;
            padding: 0.2rem 0.8rem;
            border-radius: 1rem;
            font-size: 0.8rem;
            font-weight: 600;
        }

        /* FAQ */
        .faq-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1rem;
            max-width: 1000px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-md);
            padding: 1.5rem;
            transition: var(--transition);
            cursor: default;
        }

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

        .faq-item h4 {
            font-size: 1.05rem;
            font-weight: 700;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }

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

        /* CTA Strip */
        .cta-strip {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(29, 78, 216, 0.25));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 3rem;
            text-align: center;
            margin: 3rem 0;
        }

        .cta-strip h3 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
        }

        .cta-strip p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
            font-size: 1.1rem;
        }

        .btn-cta-large {
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            color: #fff;
            padding: 1rem 2.5rem;
            border-radius: 2.5rem;
            font-size: 1.1rem;
            font-weight: 700;
            text-decoration: none;
            display: inline-block;
            transition: var(--transition);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.5);
            border: none;
            cursor: pointer;
        }

        .btn-cta-large:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 35px rgba(56, 189, 248, 0.6);
        }

        /* Footer */
        footer {
            background: rgba(3, 7, 18, 0.95);
            border-top: 1px solid var(--border-color);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }

        .footer-col h4 {
            color: var(--text-primary);
            font-weight: 700;
            margin-bottom: 1rem;
            font-size: 1rem;
        }

        .footer-col p,
        .footer-col a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid var(--border-color);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        /* FAB – Cyber & Neon Style */
        .fab {
            position: fixed;
            left: 1.5rem;
            bottom: 6rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            background: rgba(7, 7, 13, 0.8);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 2px solid transparent;
            background-clip: padding-box;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.4rem;
            color: var(--accent-cyan);
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            opacity: 0.8;
            animation: fabPulse 2.5s ease-in-out infinite;
        }

        .fab::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            padding: 3px;
            background: linear-gradient(135deg, #A3E635, #06B6D4);
            -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
            -webkit-mask-composite: xor;
            mask-composite: exclude;
        }

        .fab:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 30px rgba(56, 189, 248, 0.65);
            color: #fff;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            }
            50% {
                box-shadow: 0 0 35px rgba(56, 189, 248, 0.7);
            }
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cat-hero .container {
                flex-direction: column;
                gap: 2rem;
            }

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

            .evidence-panel {
                grid-template-columns: 1fr;
            }

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

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

            .cat-hero-content h1 {
                font-size: 2.3rem;
            }
        }

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

            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-color);
            }

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

            .nav-container {
                flex-wrap: wrap;
            }

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

            .cat-hero-stats {
                flex-direction: column;
                gap: 1rem;
            }

            .comparison-table {
                font-size: 0.8rem;
            }

            .comparison-table th,
            .comparison-table td {
                padding: 0.75rem;
            }

            .cta-strip {
                padding: 2rem 1.5rem;
            }

            .cta-strip h3 {
                font-size: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .nav-actions .btn-login {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }

            .nav-actions .btn-signup {
                padding: 0.45rem 1.2rem;
                font-size: 0.8rem;
            }

            .logo {
                font-size: 1.1rem;
            }

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

            .section-header h2 {
                font-size: 1.5rem;
            }

            .scenario-item {
                flex-direction: column;
                gap: 0.75rem;
            }
        }

/* roulang page: category3 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.65;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container-custom {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

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

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

        button {
            cursor: pointer;
            font-family: inherit;
        }

        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.88);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }

        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }

        .logo {
            font-size: 1.25rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }

        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
            -webkit-text-fill-color: transparent;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }

        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }

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

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }

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

        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }

        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }

        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }

        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }

        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }

        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        .page-hero {
            padding: 4.5rem 0 3.5rem;
            position: relative;
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-3.jpg') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }

        .page-hero-content {
            position: relative;
            z-index: 1;
            display: flex;
            align-items: center;
            gap: 3rem;
        }

        .page-hero-text {
            flex: 1;
        }

        .page-hero-visual {
            flex: 0 0 380px;
            position: relative;
        }

        .page-hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-cyan);
            border: 1px solid var(--border-color);
        }

        .page-hero-visual::before {
            content: '';
            position: absolute;
            inset: -8px;
            border-radius: var(--radius-lg);
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            opacity: 0.3;
            filter: blur(20px);
        }

        .hero-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--border-color);
            color: var(--accent-cyan);
            padding: 0.4rem 1.2rem;
            border-radius: 2rem;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 1.25rem;
        }

        .page-hero h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #F8FAFC, #94A3B8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .page-hero p {
            font-size: 1.1rem;
            color: var(--text-secondary);
            margin-bottom: 2rem;
            line-height: 1.7;
        }

        .btn-primary {
            background: linear-gradient(135deg, #2563EB, #38BDF8);
            border: none;
            color: #fff;
            padding: 0.8rem 2.2rem;
            border-radius: 2.5rem;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(37, 99, 235, 0.5);
            display: inline-block;
            text-decoration: none;
        }

        .btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(56, 189, 248, 0.6);
            color: #fff;
        }

        .btn-outline-light {
            background: transparent;
            border: 2px solid var(--accent-cyan);
            color: var(--text-primary);
            padding: 0.75rem 2rem;
            border-radius: 2.5rem;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition);
            display: inline-block;
            text-decoration: none;
        }

        .btn-outline-light:hover {
            background: rgba(56, 189, 248, 0.15);
            border-color: #fff;
            color: #fff;
            box-shadow: var(--shadow-cyan);
        }

        section {
            padding: 4.5rem 0;
            position: relative;
            z-index: 1;
        }

        .section-header {
            margin-bottom: 3rem;
        }

        .section-label {
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--accent-cyan);
            font-weight: 700;
            margin-bottom: 0.75rem;
            display: inline-block;
        }

        .section-header h2 {
            font-size: 2.2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            line-height: 1.3;
        }

        .section-header p {
            color: var(--text-secondary);
            font-size: 1.05rem;
        }

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

        .section-header.center-align {
            text-align: center;
        }

        .strategy-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.75rem;
        }

        .strategy-card {
            background: var(--bg-card);
            backdrop-filter: blur(10px);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
        }

        .strategy-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent-blue), var(--accent-cyan));
            transform: scaleX(0);
            transform-origin: left;
            transition: var(--transition);
        }

        .strategy-card:hover::before {
            transform: scaleX(1);
        }

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

        .strategy-card .card-icon {
            width: 50px;
            height: 50px;
            background: rgba(37, 99, 235, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 1.25rem;
        }

        .strategy-card h3 {
            font-size: 1.25rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .strategy-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .process-steps {
            display: flex;
            flex-direction: column;
            gap: 2rem;
        }

        .process-item {
            display: flex;
            gap: 1.5rem;
            align-items: flex-start;
        }

        .process-number {
            flex-shrink: 0;
            width: 55px;
            height: 55px;
            background: linear-gradient(135deg, #2563EB, #38BDF8);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 1.3rem;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .process-text h4 {
            font-size: 1.15rem;
            font-weight: 700;
            margin-bottom: 0.35rem;
        }

        .process-text p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.65;
        }

        .tips-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.75rem;
        }

        .tip-card {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1), rgba(56, 189, 248, 0.05));
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-lg);
            padding: 2rem;
            transition: var(--transition);
        }

        .tip-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
            transform: translateY(-3px);
        }

        .tip-card h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--accent-cyan);
        }

        .tip-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.7;
        }

        .comparison-table-wrapper {
            overflow-x: auto;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-color);
        }

        .comparison-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 600px;
        }

        .comparison-table th {
            background: rgba(37, 99, 235, 0.25);
            color: var(--text-primary);
            font-weight: 700;
            padding: 1rem 1.5rem;
            text-align: left;
            font-size: 0.95rem;
            border-bottom: 2px solid var(--accent-blue);
        }

        .comparison-table td {
            padding: 1rem 1.5rem;
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            color: var(--text-secondary);
            font-size: 0.9rem;
            vertical-align: middle;
        }

        .comparison-table tr:hover td {
            background: rgba(37, 99, 235, 0.08);
        }

        .badge-check {
            display: inline-block;
            background: rgba(16, 185, 129, 0.2);
            color: #10B981;
            padding: 0.2rem 0.7rem;
            border-radius: 1rem;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .cta-strip {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.15));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 3rem 2.5rem;
            text-align: center;
        }

        .cta-strip h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 1rem;
        }

        .cta-strip p {
            color: var(--text-secondary);
            margin-bottom: 2rem;
            font-size: 1.05rem;
        }

        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 1.75rem;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: var(--transition);
        }

        .article-card:hover {
            border-color: var(--accent-cyan);
            transform: translateY(-3px);
            box-shadow: var(--shadow-glow);
        }

        .article-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
            border-bottom: 1px solid var(--border-color);
        }

        .article-card-body {
            padding: 1.5rem;
        }

        .article-card-body h4 {
            font-size: 1.1rem;
            font-weight: 600;
            margin-bottom: 0.5rem;
            line-height: 1.4;
        }

        .article-card-body h4 a {
            color: var(--text-primary);
            text-decoration: none;
            transition: var(--transition);
        }

        .article-card-body h4 a:hover {
            color: var(--accent-cyan);
        }

        .article-card-body p {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.6;
        }

        .article-card-body .article-meta {
            font-size: 0.8rem;
            color: var(--text-holo);
            margin-top: 0.75rem;
        }

        footer {
            background: rgba(3, 7, 18, 0.95);
            border-top: 1px solid rgba(37, 99, 235, 0.25);
            padding: 3.5rem 0 1.5rem;
            margin-top: 2rem;
            position: relative;
            z-index: 1;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 2.5rem;
            margin-bottom: 2.5rem;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            margin-bottom: 1.25rem;
            color: var(--text-primary);
        }

        .footer-col p,
        .footer-col a {
            color: var(--text-secondary);
            font-size: 0.9rem;
            display: block;
            margin-bottom: 0.5rem;
            line-height: 1.7;
            transition: var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding-top: 1.5rem;
            text-align: center;
            color: var(--text-secondary);
            font-size: 0.85rem;
        }

        .fab-left {
            position: fixed;
            left: 1.25rem;
            bottom: 5rem;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, #0A0E1A, #081229);
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.45);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            transition: var(--transition);
            opacity: 0.8;
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 35px rgba(56, 189, 248, 0.7);
        }

        @media (max-width: 1024px) {
            .page-hero-content {
                flex-direction: column;
                text-align: center;
            }
            .page-hero-visual {
                flex: 0 0 auto;
                max-width: 300px;
                margin: 0 auto;
            }
            .page-hero h1 {
                font-size: 2.2rem;
            }
            .nav-links {
                gap: 1.2rem;
            }
            .nav-links a {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 100%;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                flex-direction: column;
                padding: 1.5rem;
                gap: 1.25rem;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .page-hero h1 {
                font-size: 1.8rem;
            }
            .strategy-grid,
            .tips-grid,
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .section-header h2 {
                font-size: 1.6rem;
            }
            .cta-strip {
                padding: 2rem 1.25rem;
            }
            .cta-strip h3 {
                font-size: 1.4rem;
            }
            .process-item {
                flex-direction: column;
                align-items: flex-start;
                gap: 0.75rem;
            }
        }

        @media (max-width: 520px) {
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 0.4rem 1rem;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .page-hero {
                padding: 3rem 0 2.5rem;
            }
            section {
                padding: 3rem 0;
            }
        }

/* roulang page: category4 */
:root {
            --bg-primary: #030712;
            --bg-secondary: #081229;
            --bg-card: rgba(17, 24, 39, 0.8);
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-primary: #F8FAFC;
            --text-secondary: #94A3B8;
            --text-holo: #60A5FA;
            --border-color: rgba(37, 99, 235, 0.3);
            --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.25);
            --shadow-cyan: 0 0 15px rgba(56, 189, 248, 0.3);
            --radius-lg: 1.25rem;
            --radius-md: 0.75rem;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --container-padding: 2rem;
            --max-width: 1280px;
            --promo-gold: #F59E0B;
            --promo-amber: #FCD34D;
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
        }

        body {
            font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            background: linear-gradient(135deg, #030712 0%, #081229 50%, #0A0E1A 100%);
            color: var(--text-primary);
            line-height: 1.6;
            min-height: 100vh;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            position: relative;
        }

        body::before {
            content: '';
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background:
                radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                radial-gradient(ellipse at 80% 20%, rgba(56, 189, 248, 0.06) 0%, transparent 50%);
            pointer-events: none;
            z-index: 0;
        }

        .container {
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--container-padding);
            position: relative;
            z-index: 1;
        }

        /* Header */
        header {
            position: sticky;
            top: 0;
            z-index: 100;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
        }
        .nav-container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1rem var(--container-padding);
            max-width: var(--max-width);
            margin: 0 auto;
            gap: 2rem;
        }
        .logo {
            font-size: 1.35rem;
            font-weight: 800;
            background: linear-gradient(135deg, #38BDF8, #2563EB);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            text-decoration: none;
            letter-spacing: -0.02em;
            white-space: nowrap;
            flex-shrink: 0;
            transition: var(--transition);
        }
        .logo:hover {
            filter: brightness(1.2);
            transform: scale(1.02);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 1.75rem;
            list-style: none;
            flex-wrap: wrap;
        }
        .nav-links a {
            color: var(--text-secondary);
            text-decoration: none;
            font-weight: 500;
            font-size: 0.95rem;
            transition: var(--transition);
            position: relative;
            padding: 0.35rem 0;
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-primary);
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 1rem;
            flex-shrink: 0;
        }
        .btn-login {
            background: transparent;
            border: 1px solid var(--accent-blue);
            color: var(--text-primary);
            padding: 0.55rem 1.5rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            white-space: nowrap;
        }
        .btn-login:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            box-shadow: 0 0 15px rgba(37, 99, 235, 0.3);
        }
        .btn-signup {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            border: none;
            color: #fff;
            padding: 0.55rem 1.7rem;
            border-radius: 2rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            font-size: 0.9rem;
            box-shadow: 0 4px 15px rgba(37, 99, 235, 0.4);
            white-space: nowrap;
        }
        .btn-signup:hover {
            background: linear-gradient(135deg, #3B82F6, #2563EB);
            box-shadow: 0 6px 25px rgba(37, 99, 235, 0.6);
            transform: translateY(-1px);
        }
        .mobile-menu-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-primary);
            font-size: 1.5rem;
            cursor: pointer;
            padding: 0.5rem;
        }

        /* Hero */
        .page-hero {
            padding: 4rem 0 3rem;
            position: relative;
            overflow: hidden;
            background: url('/assets/images/backpic/back-5.jpg') center/cover no-repeat;
        }
        .page-hero::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(3, 7, 18, 0.92) 0%, rgba(8, 18, 41, 0.85) 100%);
            z-index: 0;
        }
        .page-hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 3rem;
            align-items: center;
        }
        .hero-text h1 {
            font-size: 2.8rem;
            font-weight: 800;
            line-height: 1.2;
            margin-bottom: 1.25rem;
            background: linear-gradient(135deg, #FCD34D, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .hero-text p {
            font-size: 1.15rem;
            color: var(--text-secondary);
            margin-bottom: 1.75rem;
            line-height: 1.65;
        }
        .hero-actions {
            display: flex;
            gap: 1rem;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn-primary-gold {
            background: linear-gradient(135deg, #F59E0B, #D97706);
            border: none;
            color: #030712;
            padding: 0.85rem 2.2rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            box-shadow: 0 4px 20px rgba(245, 158, 11, 0.4);
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
        .btn-primary-gold:hover {
            background: linear-gradient(135deg, #FBBF24, #F59E0B);
            box-shadow: 0 6px 30px rgba(245, 158, 11, 0.6);
            transform: translateY(-2px);
        }
        .btn-outline-gold {
            background: transparent;
            border: 2px solid var(--promo-gold);
            color: var(--promo-gold);
            padding: 0.85rem 2.2rem;
            border-radius: 2rem;
            font-weight: 700;
            font-size: 1rem;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            display: inline-block;
            text-align: center;
        }
        .btn-outline-gold:hover {
            background: rgba(245, 158, 11, 0.1);
            box-shadow: 0 0 20px rgba(245, 158, 11, 0.3);
            transform: translateY(-2px);
        }
        .hero-trust {
            display: flex;
            gap: 1rem;
            margin-top: 1.5rem;
            flex-wrap: wrap;
        }
        .hero-trust span {
            font-size: 0.85rem;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 0.4rem;
        }
        .hero-trust i {
            color: var(--promo-gold);
        }
        .hero-visual {
            display: flex;
            justify-content: center;
            align-items: center;
        }
        .hero-visual img {
            max-width: 100%;
            height: auto;
            border-radius: var(--radius-lg);
            box-shadow: 0 0 40px rgba(245, 158, 11, 0.2);
            border: 1px solid rgba(245, 158, 11, 0.3);
        }

        /* Section Titles */
        .section-title {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
            color: var(--text-primary);
            text-align: left;
        }
        .section-subtitle {
            font-size: 1.05rem;
            color: var(--text-secondary);
            margin-bottom: 2.5rem;
            text-align: left;
            line-height: 1.6;
        }
        .section-header-center {
            text-align: center;
        }
        .section-header-center .section-title,
        .section-header-center .section-subtitle {
            text-align: center;
        }

        /* Promo Cards Grid */
        .promo-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 1.5rem;
            margin-bottom: 1rem;
        }
        .promo-card {
            background: var(--bg-card);
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            transition: var(--transition);
            position: relative;
            overflow: hidden;
            backdrop-filter: blur(10px);
            display: flex;
            flex-direction: column;
        }
        .promo-card::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle, rgba(245, 158, 11, 0.15) 0%, transparent 70%);
            border-radius: 0 0 0 80px;
        }
        .promo-card:hover {
            border-color: var(--promo-gold);
            transform: translateY(-4px);
            box-shadow: 0 10px 30px rgba(245, 158, 11, 0.2);
        }
        .promo-badge {
            display: inline-block;
            background: linear-gradient(135deg, #F59E0B, #D97706);
            color: #030712;
            padding: 0.3rem 0.9rem;
            border-radius: 1rem;
            font-weight: 700;
            font-size: 0.8rem;
            margin-bottom: 1rem;
            letter-spacing: 0.03em;
            text-transform: uppercase;
            align-self: flex-start;
        }
        .promo-badge.blue {
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            color: #fff;
        }
        .promo-card h3 {
            font-size: 1.3rem;
            font-weight: 700;
            margin-bottom: 0.6rem;
            color: var(--text-primary);
        }
        .promo-card .promo-value {
            font-size: 2.2rem;
            font-weight: 800;
            background: linear-gradient(135deg, #FCD34D, #F59E0B);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            margin-bottom: 0.5rem;
        }
        .promo-card p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
            flex: 1;
        }
        .promo-card .promo-link {
            color: var(--promo-gold);
            font-weight: 600;
            text-decoration: none;
            margin-top: 1rem;
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            transition: var(--transition);
            font-size: 0.95rem;
        }
        .promo-card .promo-link:hover {
            gap: 0.7rem;
            color: var(--promo-amber);
        }

        /* Steps Section */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 1.5rem;
        }
        .step-item {
            background: var(--bg-card);
            border: 1px solid rgba(37, 99, 235, 0.2);
            border-radius: var(--radius-lg);
            padding: 1.75rem;
            text-align: center;
            transition: var(--transition);
            backdrop-filter: blur(10px);
        }
        .step-item:hover {
            border-color: var(--promo-gold);
            box-shadow: var(--shadow-glow);
            transform: translateY(-3px);
        }
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, #2563EB, #1D4ED8);
            color: #fff;
            font-weight: 800;
            font-size: 1.2rem;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.4);
        }
        .step-item h4 {
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 0.5rem;
            color: var(--text-primary);
        }
        .step-item p {
            font-size: 0.9rem;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* Testimonial / Proof */
        .proof-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 1.5rem;
        }
        .proof-card {
            background: var(--bg-card);
            border: 1px solid rgba(56, 189, 248, 0.2);
            border-radius: var(--radius-lg);
            padding: 1.5rem;
            backdrop-filter: blur(10px);
            transition: var(--transition);
        }
        .proof-card:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
        }
        .proof-card .proof-avatar {
            display: flex;
            align-items: center;
            gap: 0.75rem;
            margin-bottom: 0.75rem;
        }
        .proof-card .proof-avatar i {
            font-size: 2.2rem;
            color: var(--accent-cyan);
        }
        .proof-card .proof-user {
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-primary);
        }
        .proof-card .proof-tag {
            font-size: 0.8rem;
            color: var(--promo-gold);
            font-weight: 600;
        }
        .proof-card .proof-text {
            color: var(--text-secondary);
            font-size: 0.9rem;
            line-height: 1.5;
            font-style: italic;
        }
        .proof-card .proof-amount {
            font-weight: 800;
            color: var(--promo-gold);
            margin-top: 0.5rem;
            font-size: 1rem;
        }

        /* CTA Banner */
        .cta-banner {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--border-color);
            border-radius: var(--radius-lg);
            padding: 3rem 2rem;
            text-align: center;
            backdrop-filter: blur(10px);
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: url('/assets/images/backpic/back-6.jpg') center/cover no-repeat;
            opacity: 0.1;
            z-index: 0;
        }
        .cta-banner>* {
            position: relative;
            z-index: 1;
        }
        .cta-banner h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }
        .cta-banner p {
            color: var(--text-secondary);
            margin-bottom: 1.5rem;
            font-size: 1.05rem;
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 1rem;
            text-align: left;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid rgba(37, 99, 235, 0.2);
            border-radius: var(--radius-md);
            padding: 1.25rem 1.5rem;
            transition: var(--transition);
            cursor: pointer;
        }
        .faq-item:hover {
            border-color: var(--accent-cyan);
            box-shadow: var(--shadow-cyan);
        }
        .faq-item h4 {
            font-weight: 700;
            font-size: 1.05rem;
            margin-bottom: 0.4rem;
            color: var(--text-primary);
        }
        .faq-item p {
            color: var(--text-secondary);
            font-size: 0.95rem;
            line-height: 1.6;
        }

        /* Bottom Fixed CTA */
        .bottom-cta-fixed {
            position: fixed;
            bottom: 0;
            left: 0;
            width: 100%;
            z-index: 99;
            background: rgba(3, 7, 18, 0.95);
            backdrop-filter: blur(20px);
            border-top: 1px solid rgba(245, 158, 11, 0.4);
            padding: 0.9rem 1rem;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            flex-wrap: wrap;
        }
        .bottom-cta-fixed .cta-text {
            font-weight: 600;
            font-size: 0.95rem;
            color: var(--promo-gold);
        }

        /* Footer */
        footer {
            background: rgba(3, 7, 18, 0.9);
            border-top: 1px solid rgba(37, 99, 235, 0.25);
            padding: 3rem 0 1.5rem;
            margin-top: 3rem;
            backdrop-filter: blur(10px);
            padding-bottom: 5rem;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 2rem;
            margin-bottom: 2rem;
        }
        .footer-col h4 {
            font-weight: 700;
            margin-bottom: 1rem;
            color: var(--text-primary);
            font-size: 1.05rem;
        }
        .footer-col p,
        .footer-col a {
            color: var(--text-secondary);
            text-decoration: none;
            display: block;
            margin-bottom: 0.5rem;
            font-size: 0.9rem;
            transition: var(--transition);
        }
        .footer-col a:hover {
            color: var(--promo-gold);
        }
        .footer-bottom {
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding-top: 1.5rem;
            text-align: center;
            font-size: 0.85rem;
            color: var(--text-secondary);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .page-hero .container {
                grid-template-columns: 1fr;
                gap: 2rem;
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual img {
                max-width: 80%;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .proof-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: 100%;
                left: 0;
                width: 100%;
                background: rgba(3, 7, 18, 0.98);
                padding: 1.5rem;
                gap: 1rem;
                border-bottom: 1px solid var(--border-color);
            }
            .nav-links.active {
                display: flex;
            }
            .mobile-menu-toggle {
                display: block;
            }
            .nav-actions {
                gap: 0.5rem;
            }
            .btn-login,
            .btn-signup {
                padding: 0.45rem 1rem;
                font-size: 0.8rem;
            }
            .hero-text h1 {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.5rem;
            }
            .promo-grid {
                grid-template-columns: 1fr;
            }
            .steps-grid {
                grid-template-columns: 1fr;
            }
            .proof-strip {
                grid-template-columns: 1fr;
            }
            .bottom-cta-fixed {
                gap: 0.75rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
        }

        @media (max-width: 520px) {
            .hero-text h1 {
                font-size: 1.7rem;
            }
            .btn-primary-gold,
            .btn-outline-gold {
                width: 100%;
                text-align: center;
            }
            .hero-actions {
                flex-direction: column;
            }
            .page-hero {
                padding: 2.5rem 0 2rem;
            }
        }

        section {
            padding: 3rem 0;
        }

/* roulang: framework shim */
/* 覆盖 Bootstrap 等对 a/btn 的全局默认，避免导航出现下划线/蓝链 */
.site-header a,.site-header a:hover,.navbar a,.navbar a:hover,.nav-links a,.nav-links a:hover,header nav a,header nav a:hover{text-decoration:none}
.site-header .btn,.navbar .btn,.nav-cta{text-decoration:none}