/* roulang page: index */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

        ::selection {
            background: var(--accent-blue);
            color: #fff;
        }

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

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

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

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

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

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

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

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }

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

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 70%),
                        linear-gradient(180deg, #030712 0%, #081229 50%, #030712 100%);
            padding: 120px 0 80px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-4.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.12;
            z-index: 0;
        }

        .hero-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 60px;
            align-items: center;
            width: 100%;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.3);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.85rem;
            width: fit-content;
            backdrop-filter: blur(8px);
        }

        .hero-badge i {
            font-size: 0.75rem;
            animation: pulse-dot 1.5s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.2); }
        }

        .hero-title {
            font-family: var(--font-heading);
            font-size: clamp(2.5rem, 5vw, 3.8rem);
            font-weight: 900;
            color: var(--text-white);
            line-height: 1.15;
            letter-spacing: -0.02em;
        }

        .hero-title span {
            background: linear-gradient(135deg, var(--accent-cyan), #818CF8);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 1.1rem;
            color: var(--text-slate);
            line-height: 1.7;
            max-width: 520px;
        }

        .hero-buttons {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-blue), #1D4ED8);
            border: none;
            color: #fff;
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.5);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }

        .btn-primary-glow:hover {
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-glow {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.5);
            color: var(--text-white);
            padding: 14px 32px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }

        .btn-outline-glow:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.2);
        }

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

        .hero-visual img {
            border-radius: var(--radius-lg);
            box-shadow: 0 20px 60px rgba(37, 99, 235, 0.25), 0 0 80px rgba(56, 189, 248, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.3);
            position: relative;
            z-index: 2;
        }

        .hero-visual::after {
            content: '';
            position: absolute;
            inset: -12px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border-radius: calc(var(--radius-lg) + 12px);
            z-index: 1;
            filter: blur(30px);
        }

        /* Stats Bar */
        .stats-bar {
            background: rgba(15, 23, 42, 0.8);
            backdrop-filter: blur(12px);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            padding: 32px 0;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }

        .stat-item {
            text-align: left;
            padding: 0 16px;
            border-right: 1px solid rgba(148, 163, 184, 0.15);
        }

        .stat-item:last-child {
            border-right: none;
        }

        .stat-number {
            font-family: var(--font-heading);
            font-size: 2.2rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1;
            margin-bottom: 6px;
        }

        .stat-number span {
            background: linear-gradient(135deg, var(--accent-cyan), #60A5FA);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-label {
            font-size: 0.9rem;
            color: var(--text-slate);
            font-weight: 500;
        }

        /* Services Matrix */
        .services-matrix {
            padding: 100px 0;
            background: linear-gradient(180deg, #030712 0%, #081229 100%);
        }

        .section-label {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.85rem;
            text-transform: uppercase;
            letter-spacing: 0.08em;
            margin-bottom: 16px;
        }

        .section-label::before {
            content: '';
            width: 24px;
            height: 2px;
            background: var(--accent-cyan);
            border-radius: 2px;
        }

        .section-title {
            font-family: var(--font-heading);
            font-size: clamp(2rem, 3.5vw, 2.8rem);
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

        .section-desc {
            font-size: 1.05rem;
            color: var(--text-slate);
            line-height: 1.7;
            max-width: 650px;
            margin-bottom: 48px;
        }

        .services-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .service-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .service-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, transparent, var(--accent-cyan), transparent);
            opacity: 0;
            transition: opacity 0.4s ease;
        }

        .service-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: 0 8px 32px rgba(37, 99, 235, 0.15);
            transform: translateY(-4px);
        }

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

        .service-icon {
            width: 52px;
            height: 52px;
            background: rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.5rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            transition: var(--transition-smooth);
        }

        .service-card:hover .service-icon {
            background: rgba(56, 189, 248, 0.2);
            box-shadow: 0 0 20px rgba(56, 189, 248, 0.25);
        }

        .service-card h3 {
            font-family: var(--font-heading);
            font-size: 1.25rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 10px;
        }

        .service-card p {
            font-size: 0.95rem;
            color: var(--text-slate);
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Comparison Section */
        .comparison-section {
            padding: 100px 0;
            background: var(--primary-bg);
            position: relative;
        }

        .comparison-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-6.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.06;
            z-index: 0;
        }

        .comparison-grid {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
        }

        .comparison-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 36px 28px;
        }

        .comparison-card.highlight {
            border-color: rgba(56, 189, 248, 0.5);
            box-shadow: 0 0 40px rgba(37, 99, 235, 0.2);
            position: relative;
        }

        .comparison-card.highlight::after {
            content: 'LỰA CHỌN TỐT NHẤT';
            position: absolute;
            top: -14px;
            right: 24px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 4px 16px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.04em;
        }

        .comparison-card h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
        }

        .comparison-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .comparison-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 0.95rem;
            color: var(--text-slate);
            line-height: 1.5;
        }

        .comparison-list li i {
            margin-top: 3px;
            font-size: 0.9rem;
            flex-shrink: 0;
        }

        .comparison-list li i.fa-check-circle {
            color: #10B981;
        }

        .comparison-list li i.fa-times-circle {
            color: #EF4444;
        }

        /* Milestones */
        .milestones-section {
            padding: 100px 0;
            background: linear-gradient(180deg, #081229 0%, #030712 100%);
        }

        .milestones-timeline {
            display: flex;
            gap: 0;
            position: relative;
            overflow-x: auto;
            padding: 40px 0 20px;
        }

        .milestones-timeline::before {
            content: '';
            position: absolute;
            top: 56px;
            left: 0;
            right: 0;
            height: 2px;
            background: linear-gradient(90deg, rgba(37, 99, 235, 0.4), rgba(56, 189, 248, 0.4));
            z-index: 0;
        }

        .milestone-item {
            flex: 1;
            min-width: 200px;
            text-align: left;
            position: relative;
            z-index: 1;
            padding: 0 20px;
        }

        .milestone-dot {
            width: 16px;
            height: 16px;
            background: var(--accent-cyan);
            border-radius: 50%;
            margin-bottom: 16px;
            position: relative;
            left: 0;
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.6);
        }

        .milestone-year {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .milestone-desc {
            font-size: 0.9rem;
            color: var(--text-slate);
            line-height: 1.5;
        }

        /* News/CMS Section */
        .news-section {
            padding: 100px 0;
            background: var(--primary-bg);
        }

        .news-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr;
            gap: 40px;
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            padding: 20px;
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }

        .news-item:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: 0 4px 16px rgba(37, 99, 235, 0.1);
            transform: translateX(4px);
        }

        .news-thumb {
            width: 120px;
            height: 80px;
            border-radius: var(--radius-sm);
            overflow: hidden;
            flex-shrink: 0;
            background: var(--primary-deep);
        }

        .news-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .news-info {
            flex: 1;
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .news-category {
            font-size: 0.75rem;
            color: var(--accent-cyan);
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.05em;
        }

        .news-info h3 {
            font-family: var(--font-heading);
            font-size: 1.05rem;
            font-weight: 700;
            color: var(--text-white);
            line-height: 1.4;
            margin: 0;
        }

        .news-meta {
            font-size: 0.8rem;
            color: var(--text-slate);
        }

        .news-sidebar {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: fit-content;
        }

        .news-sidebar h3 {
            font-family: var(--font-heading);
            font-size: 1.3rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
        }

        .sidebar-list {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .sidebar-list li a {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-slate);
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            padding: 4px 0;
        }

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

        .sidebar-list li a i {
            font-size: 0.7rem;
            color: var(--accent-cyan);
        }

        /* Trust Section */
        .trust-section {
            padding: 100px 0;
            background: linear-gradient(180deg, #030712 0%, #081229 100%);
        }

        .trust-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 28px;
        }

        .trust-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px 24px;
            text-align: left;
            transition: var(--transition-smooth);
        }

        .trust-card:hover {
            border-color: rgba(56, 189, 248, 0.4);
            box-shadow: 0 8px 32px rgba(37, 99, 235, 0.12);
        }

        .trust-icon {
            font-size: 2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
        }

        .trust-card h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .trust-card p {
            font-size: 0.9rem;
            color: var(--text-slate);
            line-height: 1.6;
            margin: 0;
        }

        /* FAQ */
        .faq-section {
            padding: 100px 0;
            background: var(--primary-bg);
            position: relative;
        }

        .faq-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-1.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.05;
            z-index: 0;
        }

        .faq-grid {
            position: relative;
            z-index: 1;
        }

        .faq-item {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            overflow: hidden;
            transition: var(--transition-smooth);
        }

        .faq-item:hover {
            border-color: rgba(56, 189, 248, 0.3);
        }

        .faq-question {
            width: 100%;
            background: none;
            border: none;
            color: var(--text-white);
            font-weight: 600;
            font-size: 1.05rem;
            padding: 20px 24px;
            text-align: left;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            font-family: var(--font-body);
        }

        .faq-question i {
            transition: transform 0.3s ease;
            color: var(--accent-cyan);
        }

        .faq-question.collapsed i {
            transform: rotate(0deg);
        }

        .faq-question:not(.collapsed) i {
            transform: rotate(180deg);
        }

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

        /* Footer */
        .footer {
            background: var(--primary-deep);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 60px 0 30px;
        }

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

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

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

        .footer-links {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

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

        .footer-badges {
            display: flex;
            gap: 12px;
            align-items: center;
        }

        .footer-badges span {
            font-size: 0.8rem;
            color: var(--text-slate);
            padding: 4px 12px;
            border: 1px solid rgba(148, 163, 184, 0.2);
            border-radius: 4px;
        }

        /* FAB */
        .fab {
            position: fixed;
            left: 20px;
            bottom: 120px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            background: rgba(8, 18, 41, 0.85);
            backdrop-filter: blur(16px);
            border: 2px solid transparent;
            border-image: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue)) 1;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.3rem;
            cursor: pointer;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.35);
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .fab:hover {
            box-shadow: 0 0 36px rgba(56, 189, 248, 0.55);
            transform: scale(1.08);
            color: #fff;
        }

        .fab .badge-dot {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 10px;
            height: 10px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #030712;
            animation: pulse-dot 1.5s infinite;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: 40px;
            }
            .hero-visual {
                order: -1;
            }
            .hero-visual img {
                max-width: 80%;
                margin: 0 auto;
            }
            .services-grid,
            .trust-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .stat-item {
                border-right: none;
            }
            .comparison-grid {
                grid-template-columns: 1fr;
            }
            .milestones-timeline {
                flex-wrap: wrap;
                gap: 24px;
            }
            .milestone-item {
                min-width: auto;
                flex: 1 1 45%;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(20px);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                border-bottom: 1px solid rgba(37, 99, 235, 0.2);
                z-index: 1049;
            }
            .nav-links.mobile-open {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .services-grid,
            .trust-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .hero-title {
                font-size: 2rem;
            }
            .section-title {
                font-size: 1.7rem;
            }
            .comparison-card {
                padding: 24px 20px;
            }
            .news-item {
                flex-direction: column;
            }
            .news-thumb {
                width: 100%;
                height: 160px;
            }
            .fab {
                left: 16px;
                bottom: 100px;
                width: 48px;
                height: 48px;
                font-size: 1.1rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .hero-section {
                padding: 100px 0 60px;
                min-height: auto;
            }
            .hero-buttons {
                flex-direction: column;
            }
            .btn-primary-glow,
            .btn-outline-glow {
                width: 100%;
                justify-content: center;
            }
            .stats-grid {
                grid-template-columns: 1fr;
                text-align: center;
            }
            .stat-item {
                text-align: center;
                padding: 12px 0;
                border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            }
            .stat-item:last-child {
                border-bottom: none;
            }
            .milestone-item {
                flex: 1 1 100%;
            }
        }

/* roulang page: article */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

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

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

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }

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

        /* Article Hero Banner */
        .article-hero {
            position: relative;
            min-height: 50vh;
            display: flex;
            align-items: flex-end;
            background: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.2) 0%, transparent 70%),
                linear-gradient(180deg, #030712 0%, #081229 50%, #030712 100%);
            padding: 140px 0 60px;
            overflow: hidden;
        }

        .article-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-3.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.18;
            z-index: 0;
        }

        .article-hero .container {
            position: relative;
            z-index: 2;
            width: 100%;
        }

        .article-hero-content {
            max-width: 900px;
        }

        .article-category-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: rgba(37, 99, 235, 0.25);
            border: 1px solid rgba(56, 189, 248, 0.3);
            color: var(--accent-cyan);
            padding: 6px 16px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }

        .article-hero-content h1 {
            font-family: var(--font-heading);
            font-size: 2.75rem;
            font-weight: 800;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.02em;
        }

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

        .article-meta span {
            display: flex;
            align-items: center;
            gap: 6px;
        }

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

        /* Article Body */
        .article-main {
            padding: 60px 0;
            background: var(--primary-bg);
        }

        .article-layout {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            align-items: start;
        }

        .article-content {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 48px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
        }

        .article-content h2 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-white);
            margin-top: 36px;
            margin-bottom: 16px;
            letter-spacing: -0.01em;
        }

        .article-content h2:first-child {
            margin-top: 0;
        }

        .article-content h3 {
            font-family: var(--font-heading);
            font-size: 1.35rem;
            font-weight: 700;
            color: var(--text-white);
            margin-top: 28px;
            margin-bottom: 12px;
        }

        .article-content p {
            margin-bottom: 18px;
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-slate);
        }

        .article-content ul,
        .article-content ol {
            margin-bottom: 20px;
            padding-left: 24px;
        }

        .article-content li {
            margin-bottom: 10px;
            font-size: 1.05rem;
            line-height: 1.7;
            color: var(--text-slate);
        }

        .article-content blockquote {
            border-left: 4px solid var(--accent-cyan);
            background: rgba(37, 99, 235, 0.08);
            padding: 20px 28px;
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            margin: 28px 0;
            font-style: italic;
            color: var(--text-holo);
            font-size: 1.1rem;
            line-height: 1.65;
        }

        .article-content img {
            border-radius: var(--radius-md);
            margin: 28px 0;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
        }

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

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

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

        /* Table of Contents */
        .article-toc {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            margin-bottom: 28px;
        }

        .article-toc h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .article-toc h4 i {
            color: var(--accent-cyan);
        }

        .article-toc ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }

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

        .article-toc a {
            color: var(--text-slate);
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            display: block;
            padding: 6px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
        }

        .article-toc a:hover {
            color: var(--accent-cyan);
            padding-left: 6px;
        }

        /* Sidebar */
        .article-sidebar {
            position: sticky;
            top: 90px;
        }

        .sidebar-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            margin-bottom: 24px;
        }

        .sidebar-card h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

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

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

        .sidebar-related-list li {
            margin-bottom: 12px;
        }

        .sidebar-related-list a {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            color: var(--text-slate);
            font-size: 0.95rem;
            padding: 8px 0;
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            transition: var(--transition-smooth);
        }

        .sidebar-related-list a:hover {
            color: var(--accent-cyan);
        }

        .sidebar-related-list img {
            width: 60px;
            height: 60px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .sidebar-cta-card {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 28px;
            text-align: center;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-glow);
        }

        .sidebar-cta-card h4 {
            font-family: var(--font-heading);
            font-size: 1.2rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .sidebar-cta-card p {
            font-size: 0.9rem;
            color: var(--text-slate);
            margin-bottom: 20px;
        }

        .sidebar-cta-card .btn-cta-sidebar {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
            text-align: center;
            width: 100%;
        }

        .sidebar-cta-card .btn-cta-sidebar:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        /* Article CTA Banner */
        .article-cta-banner {
            background: linear-gradient(135deg, #081229 0%, #0e1a3a 100%);
            border: 1px solid rgba(37, 99, 235, 0.4);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            margin-top: 48px;
            text-align: center;
            box-shadow: 0 8px 32px rgba(37, 99, 235, 0.25);
        }

        .article-cta-banner h3 {
            font-family: var(--font-heading);
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 8px;
        }

        .article-cta-banner p {
            color: var(--text-slate);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .article-cta-banner .btn-cta-banner {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 20px rgba(37, 99, 235, 0.5);
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .article-cta-banner .btn-cta-banner:hover {
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
        }

        /* Content Not Found */
        .not-found-state {
            text-align: center;
            padding: 80px 24px;
        }

        .not-found-state i {
            font-size: 3rem;
            color: var(--accent-cyan);
            margin-bottom: 20px;
            opacity: 0.6;
        }

        .not-found-state h3 {
            font-size: 1.5rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }

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

        .not-found-state .btn-back-home {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
            text-decoration: none;
        }

        .not-found-state .btn-back-home:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        /* Newsletter Section */
        .newsletter-section {
            padding: 60px 0;
            background: linear-gradient(180deg, rgba(8, 18, 41, 0.5) 0%, rgba(3, 7, 18, 1) 100%);
        }

        .newsletter-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 48px;
            text-align: center;
            backdrop-filter: blur(16px);
            box-shadow: var(--shadow-card);
            max-width: 700px;
            margin: 0 auto;
        }

        .newsletter-card h3 {
            font-family: var(--font-heading);
            font-size: 1.75rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .newsletter-card p {
            color: var(--text-slate);
            margin-bottom: 24px;
            font-size: 1rem;
        }

        .newsletter-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .newsletter-form input {
            flex: 1;
            min-width: 240px;
            background: rgba(3, 7, 18, 0.8);
            border: 1px solid rgba(148, 163, 184, 0.3);
            color: var(--text-white);
            padding: 12px 20px;
            border-radius: 50px;
            font-size: 0.95rem;
            outline: none;
            transition: var(--transition-smooth);
        }

        .newsletter-form input:focus {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.2);
        }

        .newsletter-form button {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .newsletter-form button:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-2px);
        }

        /* Footer */
        .footer {
            background: rgba(3, 7, 18, 0.98);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 60px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 12px;
        }

        .footer-col h4::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 32px;
            height: 2px;
            background: var(--accent-cyan);
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.5);
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-slate);
            line-height: 1.6;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding: 24px 0;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

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

        .footer-badges {
            display: flex;
            gap: 16px;
            align-items: center;
            flex-wrap: wrap;
        }

        .footer-badges span {
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid rgba(148, 163, 184, 0.2);
            color: var(--text-slate);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 500;
        }

        /* FAB */
        .fab-floating {
            position: fixed;
            left: 24px;
            bottom: 96px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(7, 7, 13, 0.85);
            backdrop-filter: blur(16px);
            border: 2px solid transparent;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 24px rgba(6, 182, 212, 0.45);
            background-clip: padding-box;
        }

        .fab-floating::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 18px;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            opacity: 0.8;
            animation: fabPulse 2s ease-in-out infinite;
        }

        @keyframes fabPulse {
            0%,
            100% {
                opacity: 0.6;
            }
            50% {
                opacity: 1;
            }
        }

        .fab-floating i {
            font-size: 1.5rem;
            color: var(--accent-cyan);
            z-index: 2;
            transition: transform 0.3s ease;
        }

        .fab-floating:hover {
            transform: scale(1.1);
            box-shadow: 0 0 36px rgba(6, 182, 212, 0.6);
        }

        .fab-floating:hover i {
            transform: scale(1.1);
        }

        .fab-notification {
            position: absolute;
            top: 4px;
            right: 4px;
            width: 12px;
            height: 12px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: ping 1.5s ease-in-out infinite;
        }

        @keyframes ping {
            0%,
            100% {
                transform: scale(1);
                opacity: 1;
            }
            50% {
                transform: scale(1.3);
                opacity: 0.7;
            }
        }

        /* Mobile Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: 1fr;
            }

            .article-sidebar {
                position: static;
                top: auto;
            }

            .article-content {
                padding: 28px;
            }

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

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

        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                flex-direction: column;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            }

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

            .mobile-toggle {
                display: block;
            }

            .article-hero {
                min-height: 40vh;
                padding: 120px 0 40px;
            }

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

            .article-content {
                padding: 20px;
            }

            .article-cta-banner {
                padding: 28px 24px;
            }

            .newsletter-card {
                padding: 28px 20px;
            }

            .newsletter-form {
                flex-direction: column;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }

            .fab-floating {
                left: 12px;
                bottom: 80px;
                width: 48px;
                height: 48px;
                border-radius: 12px;
            }

            .fab-floating::before {
                border-radius: 14px;
            }

            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }

            .logo {
                font-size: 1.1rem;
            }

            .article-hero-content h1 {
                font-size: 1.5rem;
            }

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

            .article-content {
                padding: 16px;
            }

            .article-content h2 {
                font-size: 1.35rem;
            }

            .article-content h3 {
                font-size: 1.15rem;
            }

            .article-content p,
            .article-content li {
                font-size: 1rem;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

/* roulang page: category1 */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        h1,
        h2,
        h3,
        h4,
        h5,
        h6 {
            font-family: var(--font-heading);
            color: var(--text-white);
            line-height: 1.3;
        }

        h1 {
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 800;
            letter-spacing: -0.02em;
        }

        h2 {
            font-size: clamp(1.5rem, 3.5vw, 2.2rem);
            font-weight: 700;
            letter-spacing: -0.01em;
        }

        h3 {
            font-size: 1.25rem;
            font-weight: 600;
        }

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

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

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

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }

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

        /* Hero Section */
        .hero-section {
            position: relative;
            min-height: 85vh;
            display: flex;
            align-items: center;
            justify-content: center;
            background: radial-gradient(ellipse at 50% 0%, rgba(37, 99, 235, 0.15) 0%, transparent 70%),
                linear-gradient(180deg, #030712 0%, #081229 50%, #030712 100%);
            padding: 140px 0 80px;
            overflow: hidden;
        }

        .hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-2.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.1;
            z-index: 0;
        }

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

        .hero-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--glass-border);
            color: var(--accent-cyan);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-bottom: 20px;
            backdrop-filter: blur(10px);
        }

        .hero-content h1 {
            margin-bottom: 18px;
            text-shadow: 0 4px 24px rgba(37, 99, 235, 0.3);
        }

        .hero-content .lead {
            font-size: 1.15rem;
            color: var(--text-slate);
            margin-bottom: 32px;
            line-height: 1.7;
        }

        .btn-hero {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.05rem;
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.5);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }

        .btn-hero:hover {
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        /* Section Common */
        .section-block {
            padding: 80px 0;
            position: relative;
        }

        .section-label {
            display: inline-block;
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid var(--glass-border);
            color: var(--accent-cyan);
            padding: 5px 16px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

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

        .section-header h2 {
            margin-bottom: 12px;
        }

        .section-header p {
            color: var(--text-slate);
            font-size: 1rem;
            max-width: 600px;
        }

        /* Glass Cards */
        .glass-card {
            background: var(--card-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 32px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .glass-card:hover {
            border-color: rgba(37, 99, 235, 0.5);
            box-shadow: var(--shadow-glow);
            transform: translateY(-4px);
        }

        .glass-card .card-icon {
            width: 56px;
            height: 56px;
            border-radius: 16px;
            background: rgba(37, 99, 235, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 1.6rem;
            color: var(--accent-cyan);
            margin-bottom: 18px;
            flex-shrink: 0;
        }

        .glass-card h3 {
            margin-bottom: 10px;
        }

        .glass-card p {
            color: var(--text-slate);
            font-size: 0.95rem;
            line-height: 1.6;
            margin-bottom: 0;
        }

        /* Game Cards */
        .game-card {
            background: var(--card-bg);
            border: 1px solid rgba(37, 99, 235, 0.2);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-smooth);
            position: relative;
        }

        .game-card:hover {
            border-color: var(--border-glow);
            box-shadow: 0 0 28px rgba(37, 99, 235, 0.25), 0 8px 24px rgba(0, 0, 0, 0.4);
            transform: translateY(-4px);
        }

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

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

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

        .game-card .tag-hot {
            position: absolute;
            top: 12px;
            right: 12px;
            background: linear-gradient(135deg, #DC2626, #EF4444);
            color: #fff;
            padding: 3px 12px;
            border-radius: 50px;
            font-size: 0.7rem;
            font-weight: 700;
            letter-spacing: 0.5px;
            z-index: 2;
        }

        .game-card .card-body-custom {
            padding: 20px;
        }

        .game-card .card-body-custom h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
        }

        .game-card .card-body-custom .game-meta {
            font-size: 0.85rem;
            color: var(--text-slate);
            display: flex;
            align-items: center;
            gap: 16px;
        }

        .game-card .card-body-custom .game-meta i {
            color: var(--accent-cyan);
            font-size: 0.7rem;
        }

        /* Trust Banner */
        .trust-strip {
            background: rgba(37, 99, 235, 0.08);
            border-top: 1px solid rgba(37, 99, 235, 0.15);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            padding: 24px 0;
        }

        .trust-strip .trust-items {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 48px;
            flex-wrap: wrap;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            color: var(--text-white);
            font-weight: 500;
            font-size: 0.9rem;
        }

        .trust-item i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
        }

        /* CTA Section */
        .cta-block {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.1));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .cta-block::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(56, 189, 248, 0.08) 0%, transparent 60%);
            z-index: 0;
        }

        .cta-block>* {
            position: relative;
            z-index: 1;
        }

        .btn-cta-lg {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 16px 40px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.5);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 10px;
            margin-top: 20px;
        }

        .btn-cta-lg:hover {
            box-shadow: 0 0 48px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        /* List Block */
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 14px;
            margin-bottom: 20px;
            padding: 18px 20px;
            background: rgba(15, 23, 42, 0.4);
            border: 1px solid rgba(37, 99, 235, 0.1);
            border-radius: var(--radius-sm);
            transition: var(--transition-smooth);
        }

        .feature-list li:hover {
            border-color: rgba(37, 99, 235, 0.3);
            background: rgba(15, 23, 42, 0.6);
        }

        .feature-list li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            margin-top: 2px;
            flex-shrink: 0;
        }

        .feature-list li strong {
            display: block;
            color: var(--text-white);
            font-weight: 600;
            margin-bottom: 4px;
        }

        .feature-list li span {
            color: var(--text-slate);
            font-size: 0.9rem;
            line-height: 1.5;
        }

        /* Table Compare */
        .compare-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            border-radius: var(--radius-md);
            overflow: hidden;
            border: 1px solid rgba(37, 99, 235, 0.2);
        }

        .compare-table th,
        .compare-table td {
            padding: 16px 24px;
            text-align: left;
            border-bottom: 1px solid rgba(37, 99, 235, 0.1);
        }

        .compare-table th {
            background: rgba(37, 99, 235, 0.2);
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.9rem;
        }

        .compare-table td {
            background: rgba(15, 23, 42, 0.4);
            color: var(--text-slate);
            font-size: 0.9rem;
        }

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

        .text-success-glow {
            color: #10B981;
            font-weight: 600;
        }

        /* News Card */
        .news-card {
            background: var(--card-bg);
            border: 1px solid rgba(37, 99, 235, 0.15);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
            display: flex;
            flex-direction: column;
        }

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

        .news-card .news-img {
            aspect-ratio: 16/9;
            overflow: hidden;
        }

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

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

        .news-card .news-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card .news-body .news-date {
            font-size: 0.8rem;
            color: var(--text-holo);
            margin-bottom: 8px;
        }

        .news-card .news-body h4 {
            font-size: 1rem;
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-card .news-body p {
            font-size: 0.85rem;
            color: var(--text-slate);
            flex: 1;
            margin-bottom: 12px;
        }

        .btn-outline-sm {
            display: inline-block;
            border: 1px solid rgba(37, 99, 235, 0.4);
            color: var(--accent-cyan);
            padding: 6px 18px;
            border-radius: 50px;
            font-size: 0.85rem;
            font-weight: 500;
            transition: var(--transition-smooth);
            text-align: center;
        }

        .btn-outline-sm:hover {
            background: rgba(37, 99, 235, 0.15);
            border-color: var(--accent-cyan);
            color: var(--text-white);
        }

        /* Footer */
        .footer {
            background: #020510;
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 60px 0 24px;
            margin-top: 80px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

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

        .footer-col p {
            font-size: 0.85rem;
            color: var(--text-slate);
            line-height: 1.6;
        }

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

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

        .footer-links a {
            color: var(--text-slate);
            font-size: 0.85rem;
            transition: var(--transition-smooth);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(37, 99, 235, 0.15);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .footer-bottom p {
            font-size: 0.8rem;
            color: var(--text-slate);
            margin: 0;
        }

        .footer-badges {
            display: flex;
            gap: 16px;
        }

        .footer-badges span {
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid rgba(37, 99, 235, 0.2);
            color: var(--text-holo);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
        }

        /* FAB */
        .fab-float {
            position: fixed;
            left: 16px;
            bottom: 96px;
            z-index: 50;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 18, 41, 0.85);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--accent-cyan);
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            animation: fabPulse 3s ease-in-out infinite;
        }

        .fab-float::before {
            content: '';
            position: absolute;
            inset: -3px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            z-index: -1;
            opacity: 0.7;
            filter: blur(8px);
        }

        .fab-float:hover {
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.6);
            color: #fff;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.35);
            }
            50% {
                box-shadow: 0 0 36px rgba(6, 182, 212, 0.55);
            }
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 18px;
            height: 18px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid var(--primary-bg);
            animation: badgeBlink 1.5s ease-in-out infinite;
        }

        @keyframes badgeBlink {
            0%,
            100% {
                opacity: 1;
            }
            50% {
                opacity: 0.5;
            }
        }

        /* Responsive */
        @media (max-width: 991px) {
            .nav-links {
                gap: 20px;
            }
            .nav-links a {
                font-size: 0.85rem;
            }
            .trust-strip .trust-items {
                gap: 24px;
            }
        }

        @media (max-width: 768px) {
            .mobile-toggle {
                display: block;
            }
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 18px;
                transform: translateY(-120%);
                opacity: 0;
                transition: all 0.35s ease;
                z-index: 1040;
                border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            }
            .nav-links.show {
                transform: translateY(0);
                opacity: 1;
            }
            .hero-section {
                padding: 120px 0 60px;
                min-height: auto;
            }
            .section-block {
                padding: 50px 0;
            }
            .trust-strip .trust-items {
                gap: 16px;
                justify-content: flex-start;
            }
            .cta-block {
                padding: 36px 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .compare-table {
                font-size: 0.8rem;
            }
            .compare-table th,
            .compare-table td {
                padding: 10px 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .nav-bar {
                height: 60px;
            }
            .logo {
                font-size: 1.1rem;
            }
            .btn-login,
            .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }
            .hero-content h1 {
                font-size: 1.6rem;
            }
            .section-header h2 {
                font-size: 1.3rem;
            }
            .glass-card {
                padding: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .trust-strip .trust-items {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-slate);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            padding-top: 70px;
        }

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

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

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

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

        /* Header & Navigation */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

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

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

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }

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

        /* Section Spacing */
        .section-padding {
            padding: 80px 0;
        }

        .section-padding-sm {
            padding: 60px 0;
        }

        .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 16px;
            letter-spacing: -0.03em;
        }

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

        /* Hero Category */
        .hero-category {
            position: relative;
            background: var(--primary-bg);
            padding: 80px 0 60px;
            overflow: hidden;
        }

        .hero-category::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 20% 50%, rgba(37, 99, 235, 0.15), transparent 60%),
                linear-gradient(135deg, #030712 0%, #081229 100%);
            z-index: 0;
        }

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

        .hero-category h1 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.8rem;
            color: var(--text-white);
            line-height: 1.2;
            margin-bottom: 16px;
            letter-spacing: -0.03em;
            text-shadow: 0 0 20px rgba(56, 189, 248, 0.3);
        }

        .hero-category .lead {
            font-size: 1.15rem;
            color: var(--text-slate);
            max-width: 650px;
            margin-bottom: 24px;
        }

        /* Cards */
        .card-glass {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px 28px;
            transition: var(--transition-smooth);
            height: 100%;
        }

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

        .card-glass .card-icon {
            font-size: 2.2rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.4));
            display: block;
        }

        .card-glass h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-white);
            font-size: 1.25rem;
            margin-bottom: 8px;
        }

        .card-glass p {
            font-size: 0.95rem;
            color: var(--text-slate);
            line-height: 1.6;
            margin: 0;
        }

        /* Steps */
        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            position: relative;
            transition: var(--transition-smooth);
        }

        .step-card:hover {
            border-color: var(--accent-blue);
            box-shadow: 0 6px 24px rgba(37, 99, 235, 0.15);
        }

        .step-number {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2.5rem;
            color: var(--accent-cyan);
            opacity: 0.3;
            line-height: 1;
            margin-bottom: 12px;
        }

        .step-card h3 {
            color: var(--text-white);
            font-weight: 700;
            font-size: 1.1rem;
            margin-bottom: 8px;
        }

        .step-card p {
            color: var(--text-slate);
            font-size: 0.9rem;
            margin: 0;
        }

        /* CTA Buttons */
        .btn-cta {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.5);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
        }

        .btn-cta:hover {
            box-shadow: 0 0 36px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }

        .btn-outline-glow {
            background: transparent;
            border: 1px solid rgba(96, 165, 250, 0.5);
            color: var(--text-holo);
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: var(--transition-smooth);
            display: inline-block;
            text-decoration: none;
        }

        .btn-outline-glow:hover {
            border-color: var(--accent-cyan);
            box-shadow: 0 0 24px rgba(56, 189, 248, 0.3);
            color: var(--accent-cyan);
        }

        /* Feature List */
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
            font-size: 0.95rem;
            color: var(--text-slate);
        }

        .feature-list li i {
            color: var(--accent-cyan);
            font-size: 1.1rem;
            margin-top: 3px;
            flex-shrink: 0;
        }

        /* Process Box */
        .process-box {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            text-align: left;
            transition: var(--transition-smooth);
            height: 100%;
        }

        .process-box:hover {
            border-color: var(--accent-blue);
            box-shadow: 0 6px 28px rgba(37, 99, 235, 0.2);
        }

        .process-box .process-icon {
            font-size: 2.5rem;
            color: var(--accent-cyan);
            margin-bottom: 16px;
            display: block;
        }

        .process-box h3 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-white);
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

        .process-box p {
            color: var(--text-slate);
            font-size: 0.9rem;
            margin: 0;
        }

        /* Testimonials */
        .testimonial-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 24px;
            transition: var(--transition-smooth);
        }

        .testimonial-card:hover {
            border-color: var(--accent-blue);
        }

        .testimonial-card .stars {
            color: #FBBF24;
            font-size: 0.9rem;
            margin-bottom: 8px;
        }

        .testimonial-card p {
            color: var(--text-slate);
            font-size: 0.9rem;
            font-style: italic;
            margin-bottom: 12px;
            line-height: 1.6;
        }

        .testimonial-card .author {
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.85rem;
        }

        /* FAQ Section */
        .faq-section {
            background: var(--primary-deep);
        }

        .accordion-button {
            background: var(--card-bg) !important;
            color: var(--text-white) !important;
            font-weight: 600;
            font-size: 1rem;
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm) !important;
            padding: 16px 20px;
            transition: var(--transition-smooth);
        }

        .accordion-button:not(.collapsed) {
            background: rgba(37, 99, 235, 0.15) !important;
            border-color: var(--accent-blue);
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.2);
        }

        .accordion-button:focus {
            box-shadow: 0 0 12px rgba(56, 189, 248, 0.3);
            border-color: var(--accent-cyan);
        }

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

        .accordion-body {
            background: var(--card-bg);
            color: var(--text-slate);
            font-size: 0.95rem;
            line-height: 1.7;
            border: 1px solid var(--glass-border);
            border-top: none;
            border-radius: 0 0 var(--radius-sm) var(--radius-sm);
            padding: 16px 20px;
        }

        .accordion-item {
            background: transparent;
            border: none;
            margin-bottom: 12px;
        }

        /* Footer */
        .footer {
            background: #020617;
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 60px 0 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-white);
            font-size: 1.1rem;
            margin-bottom: 16px;
        }

        .footer-col p {
            color: var(--text-slate);
            font-size: 0.9rem;
            line-height: 1.6;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.15);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 20px;
        }

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

        .footer-badges {
            display: flex;
            gap: 16px;
        }

        .footer-badges span {
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            padding: 6px 16px;
            font-size: 0.75rem;
            color: var(--text-holo);
            font-weight: 600;
        }

        /* News list */
        .news-card {
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: var(--transition-smooth);
            height: 100%;
        }

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

        .news-card img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }

        .news-card .news-body {
            padding: 20px;
        }

        .news-card .news-category {
            font-size: 0.75rem;
            color: var(--accent-cyan);
            text-transform: uppercase;
            letter-spacing: 0.05em;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .news-card h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 1rem;
            color: var(--text-white);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .news-card p {
            font-size: 0.85rem;
            color: var(--text-slate);
            margin-bottom: 12px;
            line-height: 1.5;
        }

        .news-card .news-date {
            font-size: 0.75rem;
            color: var(--text-slate);
            opacity: 0.7;
        }

        .news-card a {
            text-decoration: none;
            color: inherit;
            display: block;
            height: 100%;
        }

        /* Intense CTA bar */
        .cta-bar {
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.2), rgba(56, 189, 248, 0.15));
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
        }

        .cta-bar h2 {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 2rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }

        .cta-bar p {
            color: var(--text-slate);
            font-size: 1.1rem;
            margin-bottom: 28px;
        }

        /* Floating Action Button */
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 100px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: rgba(8, 18, 41, 0.8);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 2px solid transparent;
            background-clip: padding-box;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition-smooth);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            animation: fabPulse 2s infinite ease-in-out;
            color: var(--accent-cyan);
            font-size: 1.5rem;
        }

        .fab-left::before {
            content: '';
            position: absolute;
            inset: -2px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            z-index: -1;
            mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #fff calc(100% - 2px));
            -webkit-mask: radial-gradient(farthest-side, transparent calc(100% - 2px), #fff calc(100% - 2px));
        }

        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(56, 189, 248, 0.7);
        }

        .fab-badge {
            position: absolute;
            top: -4px;
            right: -4px;
            width: 16px;
            height: 16px;
            background: #EF4444;
            border-radius: 50%;
            border: 2px solid #fff;
            animation: badgeBlink 1.5s infinite;
        }

        @keyframes fabPulse {
            0%,
            100% {
                box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            }
            50% {
                box-shadow: 0 0 40px rgba(6, 182, 212, 0.7);
            }
        }

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

        /* Responsive */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
            .hero-category h1 {
                font-size: 2.2rem;
            }
            .section-title {
                font-size: 1.8rem;
            }
        }

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.95);
                backdrop-filter: blur(20px);
                -webkit-backdrop-filter: blur(20px);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 20px;
                border-bottom: 1px solid var(--glass-border);
                display: none;
            }
            .nav-links.show {
                display: flex;
            }
            .mobile-toggle {
                display: block;
            }
            .hero-category h1 {
                font-size: 1.8rem;
            }
            .hero-category .lead {
                font-size: 1rem;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .fab-left {
                width: 48px;
                height: 48px;
                left: 16px;
                bottom: 80px;
                font-size: 1.2rem;
            }
            .cta-bar {
                padding: 32px 20px;
            }
            .cta-bar h2 {
                font-size: 1.5rem;
            }
            .section-title {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .btn-signup {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .btn-login {
                padding: 6px 16px;
                font-size: 0.8rem;
            }
            .logo {
                font-size: 1.1rem;
            }
            .hero-category h1 {
                font-size: 1.6rem;
            }
            .card-glass {
                padding: 24px 20px;
            }
        }

/* roulang page: category3 */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --accent-orange: #F97316;
            --accent-gold: #FBBF24;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }

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

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

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

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

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

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

        h1,
        h2,
        h3,
        h4 {
            font-family: var(--font-heading);
            color: var(--text-white);
            letter-spacing: -0.02em;
        }

        h1 {
            font-size: 2.6rem;
            font-weight: 800;
            margin-bottom: 16px;
            line-height: 1.2;
        }

        h2 {
            font-size: 2rem;
            font-weight: 700;
            margin-bottom: 24px;
            line-height: 1.3;
        }

        h3 {
            font-size: 1.35rem;
            font-weight: 600;
            margin-bottom: 12px;
        }

        /* Header & Navigation (aligned with index) */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }

        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }

        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }

        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }

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

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

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

        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }

        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }

        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }

        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }

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

        /* Hero Section for Category */
        .category-hero {
            position: relative;
            padding: 140px 0 80px;
            background: radial-gradient(ellipse at 50% 30%, rgba(251, 191, 36, 0.12) 0%, transparent 65%),
                        radial-gradient(ellipse at 80% 20%, rgba(37, 99, 235, 0.18) 0%, transparent 50%),
                        linear-gradient(180deg, #030712 0%, #081229 50%, #030712 100%);
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-7.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }

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

        .hero-content-wrapper {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .hero-text h1 {
            font-size: 2.8rem;
            line-height: 1.15;
            background: linear-gradient(135deg, #F8FAFC 0%, #FBBF24 50%, #F97316 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-text p {
            font-size: 1.1rem;
            color: var(--text-slate);
            margin: 20px 0 32px;
            line-height: 1.7;
        }

        .hero-stats-row {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            margin-bottom: 32px;
        }

        .stat-badge {
            background: rgba(251, 191, 36, 0.1);
            border: 1px solid rgba(251, 191, 36, 0.25);
            border-radius: var(--radius-sm);
            padding: 12px 20px;
            text-align: center;
            min-width: 110px;
        }

        .stat-badge .stat-num {
            font-size: 1.6rem;
            font-weight: 800;
            color: var(--accent-gold);
            line-height: 1.2;
        }

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

        .hero-icon-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 16px;
            align-items: center;
            justify-items: center;
        }

        .icon-matrix-item {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            transition: var(--transition-smooth);
            width: 100%;
        }

        .icon-matrix-item:hover {
            border-color: var(--accent-gold);
            box-shadow: 0 0 24px rgba(251, 191, 36, 0.25);
            transform: translateY(-4px);
        }

        .icon-matrix-item i {
            font-size: 2rem;
            color: var(--accent-gold);
            margin-bottom: 8px;
            display: block;
        }

        .icon-matrix-item span {
            font-size: 0.9rem;
            font-weight: 600;
            color: var(--text-white);
        }

        /* Features Section */
        .features-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .feature-card {
            background: var(--card-bg);
            border: 1px solid rgba(37, 99, 235, 0.12);
            border-radius: var(--radius-md);
            padding: 32px 24px;
            transition: var(--transition-smooth);
            position: relative;
            overflow: hidden;
        }

        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 4px;
            height: 100%;
            background: linear-gradient(180deg, var(--accent-gold), var(--accent-orange));
            border-radius: 4px 0 0 4px;
        }

        .feature-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
            transform: translateY(-2px);
        }

        .feature-card .feature-icon {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(251, 191, 36, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 16px;
        }

        .feature-card .feature-icon i {
            font-size: 1.4rem;
            color: var(--accent-gold);
        }

        .feature-card h3 {
            font-size: 1.2rem;
            margin-bottom: 8px;
        }

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

        /* Code Cards Grid */
        .code-cards-section {
            padding: 80px 0;
            background: #050a16;
        }

        .code-cards-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .code-card {
            background: var(--glass-bg);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            display: flex;
            flex-direction: column;
            transition: var(--transition-smooth);
        }

        .code-card:hover {
            border-color: rgba(251, 191, 36, 0.5);
            box-shadow: 0 0 32px rgba(251, 191, 36, 0.2);
            transform: translateY(-4px);
        }

        .code-card-header {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-bottom: 16px;
        }

        .code-card-header .badge-platform {
            background: rgba(37, 99, 235, 0.25);
            color: var(--accent-cyan);
            padding: 4px 14px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
        }

        .code-card-header .badge-hot {
            background: rgba(239, 68, 68, 0.2);
            color: #EF4444;
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .code-card-body h3 {
            font-size: 1.25rem;
            margin-bottom: 8px;
            color: var(--text-white);
        }

        .code-card-body .code-value {
            font-family: monospace;
            font-size: 1.4rem;
            font-weight: 700;
            background: rgba(0, 0, 0, 0.4);
            padding: 8px 16px;
            border-radius: var(--radius-sm);
            color: var(--accent-gold);
            display: inline-block;
            margin: 12px 0;
            letter-spacing: 1px;
        }

        .code-card-body p {
            font-size: 0.9rem;
            color: var(--text-slate);
            margin-bottom: 20px;
        }

        .btn-claim {
            background: linear-gradient(135deg, var(--accent-gold), var(--accent-orange));
            border: none;
            color: #030712;
            padding: 12px 28px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 0.95rem;
            align-self: flex-start;
            box-shadow: 0 0 20px rgba(251, 191, 36, 0.3);
            transition: var(--transition-smooth);
        }

        .btn-claim:hover {
            box-shadow: 0 0 36px rgba(249, 115, 22, 0.5);
            transform: translateY(-2px);
        }

        /* Steps Section */
        .steps-section {
            padding: 80px 0;
            background: radial-gradient(ellipse at 70% 50%, rgba(37, 99, 235, 0.08) 0%, transparent 50%),
                        var(--primary-bg);
        }

        .steps-timeline {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            position: relative;
        }

        .step-item {
            text-align: left;
            position: relative;
            padding-left: 48px;
        }

        .step-item .step-number {
            position: absolute;
            left: 0;
            top: 0;
            width: 36px;
            height: 36px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 800;
            font-size: 0.9rem;
            color: #fff;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.5);
        }

        .step-item h4 {
            font-size: 1.05rem;
            color: var(--text-white);
            margin-bottom: 6px;
        }

        .step-item p {
            font-size: 0.9rem;
            color: var(--text-slate);
            margin: 0;
            line-height: 1.5;
        }

        /* Comparison Table */
        .comparison-section {
            padding: 80px 0;
            background: #050a16;
        }

        .comparison-table-wrap {
            overflow-x: auto;
            -webkit-overflow-scrolling: touch;
        }

        .comparison-table {
            width: 100%;
            border-collapse: separate;
            border-spacing: 0;
            min-width: 700px;
        }

        .comparison-table thead th {
            background: rgba(37, 99, 235, 0.15);
            color: var(--text-white);
            font-weight: 700;
            padding: 16px 20px;
            text-align: left;
            font-size: 0.95rem;
            border-bottom: 2px solid rgba(37, 99, 235, 0.3);
        }

        .comparison-table thead th:first-child {
            border-radius: var(--radius-sm) 0 0 0;
        }

        .comparison-table thead th:last-child {
            border-radius: 0 var(--radius-sm) 0 0;
        }

        .comparison-table tbody td {
            padding: 14px 20px;
            font-size: 0.9rem;
            color: var(--text-slate);
            border-bottom: 1px solid rgba(148, 163, 184, 0.1);
            background: rgba(15, 23, 42, 0.4);
        }

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

        .comparison-table .check-icon {
            color: #10B981;
            font-weight: 700;
        }

        .comparison-table .cross-icon {
            color: #EF4444;
        }

        /* Social Proof */
        .social-proof-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .proof-cards {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .proof-card {
            background: var(--card-bg);
            border: 1px solid rgba(37, 99, 235, 0.1);
            border-radius: var(--radius-md);
            padding: 28px 24px;
            text-align: left;
            transition: var(--transition-smooth);
        }

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

        .proof-card .proof-rating {
            color: var(--accent-gold);
            font-size: 1.1rem;
            margin-bottom: 12px;
        }

        .proof-card blockquote {
            font-size: 0.95rem;
            color: var(--text-slate);
            font-style: italic;
            margin: 0 0 16px;
            line-height: 1.6;
            border-left: 3px solid var(--accent-gold);
            padding-left: 16px;
        }

        .proof-card .proof-user {
            font-weight: 600;
            color: var(--text-white);
            font-size: 0.9rem;
        }

        /* FAQ */
        .faq-section {
            padding: 80px 0;
            background: #050a16;
        }

        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .faq-item {
            border-bottom: 1px solid rgba(148, 163, 184, 0.12);
            padding: 24px 0;
            cursor: pointer;
            transition: var(--transition-smooth);
        }

        .faq-item:first-child {
            border-top: 1px solid rgba(148, 163, 184, 0.12);
        }

        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.05rem;
            color: var(--text-white);
            gap: 16px;
        }

        .faq-question i {
            color: var(--accent-cyan);
            transition: transform 0.3s ease;
            font-size: 1rem;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            font-size: 0.95rem;
            color: var(--text-slate);
            line-height: 1.7;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding-top: 16px;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        /* CTA Banner */
        .cta-banner {
            padding: 80px 0;
            background: radial-gradient(ellipse at 40% 50%, rgba(251, 191, 36, 0.2) 0%, transparent 60%),
                        radial-gradient(ellipse at 70% 40%, rgba(37, 99, 235, 0.2) 0%, transparent 60%),
                        linear-gradient(135deg, #081229 0%, #030712 100%);
            text-align: center;
        }

        .cta-banner h2 {
            font-size: 2.2rem;
            margin-bottom: 16px;
        }

        .cta-banner p {
            font-size: 1.05rem;
            color: var(--text-slate);
            margin-bottom: 32px;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .btn-cta-large {
            display: inline-block;
            background: linear-gradient(135deg, var(--accent-gold), #F97316);
            color: #030712;
            padding: 16px 44px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1.1rem;
            box-shadow: 0 0 32px rgba(251, 191, 36, 0.4);
            border: none;
            transition: var(--transition-smooth);
        }

        .btn-cta-large:hover {
            box-shadow: 0 0 48px rgba(249, 115, 22, 0.6);
            transform: translateY(-3px);
        }

        /* Updates List */
        .updates-section {
            padding: 80px 0;
            background: var(--primary-bg);
        }

        .updates-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }

        .update-card {
            background: var(--card-bg);
            border: 1px solid rgba(37, 99, 235, 0.1);
            border-radius: var(--radius-md);
            padding: 24px;
            display: flex;
            gap: 20px;
            transition: var(--transition-smooth);
            align-items: flex-start;
        }

        .update-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-card);
            transform: translateY(-2px);
        }

        .update-card img {
            width: 100px;
            height: 80px;
            object-fit: cover;
            border-radius: var(--radius-sm);
            flex-shrink: 0;
        }

        .update-card-content h4 {
            font-size: 1.05rem;
            margin-bottom: 6px;
            color: var(--text-white);
        }

        .update-card-content h4 a {
            color: var(--text-white);
            text-decoration: none;
        }

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

        .update-card-content .update-meta {
            font-size: 0.8rem;
            color: var(--text-slate);
            margin-bottom: 6px;
        }

        .update-card-content p {
            font-size: 0.9rem;
            color: var(--text-slate);
            margin: 0;
            line-height: 1.5;
        }

        /* Footer */
        .footer {
            background: #02050c;
            padding: 60px 0 30px;
            border-top: 1px solid rgba(37, 99, 235, 0.2);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            margin-bottom: 40px;
        }

        .footer-col h4 {
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
        }

        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-slate);
            line-height: 1.6;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            font-size: 0.85rem;
            color: var(--text-slate);
            gap: 16px;
        }

        .footer-badges {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }

        .footer-badges span {
            background: rgba(37, 99, 235, 0.15);
            border: 1px solid rgba(37, 99, 235, 0.3);
            padding: 4px 12px;
            border-radius: 50px;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--text-holo);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-content-wrapper {
                grid-template-columns: 1fr;
                gap: 32px;
            }

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

            .code-cards-grid {
                grid-template-columns: 1fr;
            }

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

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

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

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

        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.97);
                flex-direction: column;
                padding: 24px;
                gap: 16px;
                display: none;
                border-bottom: 1px solid rgba(37, 99, 235, 0.2);
            }

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

            .nav-actions .btn-login,
            .nav-actions .btn-signup {
                padding: 6px 14px;
                font-size: 0.8rem;
            }

            .mobile-toggle {
                display: block;
            }

            h1 {
                font-size: 2rem;
            }

            h2 {
                font-size: 1.6rem;
            }

            .hero-stats-row {
                justify-content: center;
            }

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

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

            .steps-timeline {
                grid-template-columns: 1fr;
            }

            .proof-cards {
                grid-template-columns: 1fr;
            }

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

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
        }

        @media (max-width: 520px) {
            .hero-stats-row {
                flex-direction: column;
                align-items: stretch;
            }

            .stat-badge {
                text-align: center;
            }

            .btn-claim,
            .btn-cta-large {
                width: 100%;
                text-align: center;
            }
        }

/* roulang page: category4 */
:root {
            --primary-deep: #081229;
            --primary-bg: #030712;
            --accent-blue: #2563EB;
            --accent-cyan: #38BDF8;
            --text-white: #F8FAFC;
            --text-slate: #94A3B8;
            --text-holo: #60A5FA;
            --border-glow: rgba(37, 99, 235, 0.4);
            --card-bg: rgba(15, 23, 42, 0.8);
            --glass-bg: rgba(8, 18, 41, 0.6);
            --glass-border: rgba(37, 99, 235, 0.25);
            --radius-lg: 20px;
            --radius-md: 12px;
            --radius-sm: 8px;
            --shadow-glow: 0 8px 32px rgba(37, 99, 235, 0.2);
            --shadow-card: 0 4px 20px rgba(0, 0, 0, 0.3);
            --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
            --font-heading: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
            --font-body: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
        }
        body {
            font-family: var(--font-body);
            background: var(--primary-bg);
            color: var(--text-slate);
            line-height: 1.65;
            overflow-x: hidden;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: var(--transition-smooth);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        button, .btn {
            cursor: pointer;
            transition: var(--transition-smooth);
            font-family: var(--font-body);
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
        }
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(3, 7, 18, 0.85);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-bottom: 1px solid rgba(37, 99, 235, 0.15);
            transition: var(--transition-smooth);
        }
        .header.scrolled {
            background: rgba(3, 7, 18, 0.95);
            box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
        }
        .nav-bar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }
        .logo {
            font-family: var(--font-heading);
            font-weight: 800;
            font-size: 1.35rem;
            color: var(--text-white);
            letter-spacing: -0.02em;
            display: flex;
            align-items: center;
            gap: 8px;
            text-decoration: none;
            white-space: nowrap;
        }
        .logo i {
            color: var(--accent-cyan);
            font-size: 1.5rem;
            filter: drop-shadow(0 0 8px rgba(56, 189, 248, 0.6));
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 32px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text-slate);
            font-weight: 500;
            font-size: 0.95rem;
            position: relative;
            padding: 6px 0;
            text-decoration: none;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent-cyan);
            transition: width 0.3s ease;
            box-shadow: 0 0 8px rgba(56, 189, 248, 0.6);
        }
        .nav-links a:hover,
        .nav-links a.active {
            color: var(--text-white);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-actions {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-login {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.4);
            color: var(--text-white);
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        .btn-login:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }
        .btn-signup {
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: none;
            color: #fff;
            padding: 8px 20px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
            transition: var(--transition-smooth);
        }
        .btn-signup:hover {
            box-shadow: 0 0 28px rgba(56, 189, 248, 0.6);
            transform: translateY(-1px);
        }
        .mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: var(--text-white);
            font-size: 1.5rem;
            cursor: pointer;
        }
        .page-banner {
            position: relative;
            padding: 140px 0 60px;
            background: radial-gradient(ellipse at 30% 50%, rgba(37, 99, 235, 0.15) 0%, transparent 60%),
                        linear-gradient(180deg, #030712 0%, #081229 100%);
            overflow: hidden;
        }
        .page-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background-image: url('/assets/images/backpic/back-6.jpg');
            background-size: cover;
            background-position: center;
            opacity: 0.08;
            z-index: 0;
        }
        .banner-content {
            position: relative;
            z-index: 1;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
        }
        .banner-badge {
            display: inline-block;
            background: rgba(37, 99, 235, 0.2);
            border: 1px solid var(--glass-border);
            color: var(--accent-cyan);
            font-weight: 600;
            font-size: 0.8rem;
            padding: 6px 16px;
            border-radius: 50px;
            margin-bottom: 16px;
            letter-spacing: 0.05em;
        }
        .banner-content h1 {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.8rem;
            color: var(--text-white);
            margin-bottom: 16px;
            line-height: 1.25;
        }
        .banner-content h1 span {
            background: linear-gradient(135deg, var(--accent-cyan), var(--accent-blue));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }
        .banner-desc {
            font-size: 1.1rem;
            color: var(--text-slate);
            max-width: 650px;
            margin: 0 auto 32px;
        }
        .btn-primary-glow {
            background: linear-gradient(135deg, var(--accent-blue), #1d4ed8);
            border: none;
            color: #fff;
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 700;
            font-size: 1rem;
            box-shadow: 0 0 24px rgba(37, 99, 235, 0.5);
            transition: var(--transition-smooth);
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary-glow:hover {
            box-shadow: 0 0 40px rgba(56, 189, 248, 0.7);
            transform: translateY(-2px);
            color: #fff;
        }
        .btn-secondary-ghost {
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.5);
            color: var(--text-white);
            padding: 14px 36px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 1rem;
            transition: var(--transition-smooth);
        }
        .btn-secondary-ghost:hover {
            border-color: var(--accent-cyan);
            color: var(--accent-cyan);
            box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
        }
        .section-padding {
            padding: 80px 0;
        }
        .section-header {
            margin-bottom: 48px;
        }
        .section-label {
            display: inline-block;
            font-size: 0.8rem;
            font-weight: 600;
            color: var(--accent-cyan);
            letter-spacing: 0.08em;
            text-transform: uppercase;
            margin-bottom: 8px;
        }
        .section-title {
            font-family: var(--font-heading);
            font-weight: 700;
            font-size: 2.2rem;
            color: var(--text-white);
            margin-bottom: 12px;
        }
        .section-subtitle {
            color: var(--text-slate);
            font-size: 1rem;
            max-width: 650px;
        }
        .glass-card {
            background: var(--glass-bg);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-lg);
            padding: 32px;
            box-shadow: var(--shadow-card);
            transition: var(--transition-smooth);
        }
        .glass-card:hover {
            border-color: var(--border-glow);
            box-shadow: var(--shadow-glow);
        }
        .step-card {
            display: flex;
            gap: 20px;
            align-items: flex-start;
            padding: 28px;
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-md);
            transition: var(--transition-smooth);
        }
        .step-card:hover {
            border-color: var(--border-glow);
        }
        .step-number {
            flex-shrink: 0;
            width: 48px;
            height: 48px;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.25rem;
            color: #fff;
            box-shadow: 0 0 16px rgba(37, 99, 235, 0.4);
        }
        .step-body h4 {
            font-family: var(--font-heading);
            font-weight: 600;
            color: var(--text-white);
            margin-bottom: 6px;
        }
        .step-body p {
            color: var(--text-slate);
            font-size: 0.95rem;
            margin-bottom: 0;
        }
        .device-tabs {
            display: flex;
            gap: 8px;
            margin-bottom: 32px;
            flex-wrap: wrap;
        }
        .device-tab {
            padding: 10px 24px;
            border-radius: 50px;
            font-weight: 600;
            font-size: 0.9rem;
            color: var(--text-slate);
            background: transparent;
            border: 1px solid rgba(148, 163, 184, 0.3);
            transition: var(--transition-smooth);
        }
        .device-tab.active,
        .device-tab:hover {
            background: rgba(37, 99, 235, 0.2);
            border-color: var(--accent-cyan);
            color: var(--text-white);
            box-shadow: 0 0 12px rgba(37, 99, 235, 0.3);
        }
        .benefit-list {
            list-style: none;
            padding: 0;
            display: grid;
            gap: 16px;
        }
        .benefit-list li {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 14px 20px;
            background: var(--card-bg);
            border: 1px solid var(--glass-border);
            border-radius: var(--radius-sm);
            color: var(--text-white);
            font-weight: 500;
            transition: var(--transition-smooth);
        }
        .benefit-list li:hover {
            border-color: var(--border-glow);
        }
        .benefit-list li i {
            color: var(--accent-cyan);
            font-size: 1.2rem;
            flex-shrink: 0;
        }
        .footer {
            background: rgba(8, 18, 41, 0.9);
            border-top: 1px solid rgba(37, 99, 235, 0.2);
            padding: 60px 0 30px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-col h4 {
            font-family: var(--font-heading);
            font-weight: 700;
            color: var(--text-white);
            margin-bottom: 16px;
            font-size: 1rem;
        }
        .footer-col p {
            font-size: 0.9rem;
            color: var(--text-slate);
        }
        .footer-links {
            list-style: none;
            padding: 0;
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-links a {
            color: var(--text-slate);
            font-size: 0.9rem;
            transition: var(--transition-smooth);
        }
        .footer-links a:hover {
            color: var(--accent-cyan);
        }
        .footer-bottom {
            border-top: 1px solid rgba(148, 163, 184, 0.1);
            padding-top: 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }
        .footer-bottom p {
            margin: 0;
            font-size: 0.85rem;
            color: var(--text-slate);
        }
        .footer-badges {
            display: flex;
            gap: 16px;
        }
        .footer-badges span {
            padding: 6px 14px;
            background: rgba(37, 99, 235, 0.1);
            border: 1px solid var(--glass-border);
            border-radius: 50px;
            font-size: 0.75rem;
            font-weight: 600;
            color: var(--text-slate);
        }
        .cta-sticky-bar {
            position: fixed;
            bottom: 0;
            left: 0;
            right: 0;
            z-index: 1050;
            background: rgba(8, 18, 41, 0.95);
            backdrop-filter: blur(20px);
            -webkit-backdrop-filter: blur(20px);
            border-top: 1px solid rgba(37, 99, 235, 0.3);
            padding: 12px 0;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
        }
        .cta-sticky-bar span {
            color: var(--text-white);
            font-weight: 600;
            font-size: 0.95rem;
        }
        .cta-sticky-bar .btn-primary-glow {
            padding: 10px 28px;
            font-size: 0.95rem;
        }
        .fab-left {
            position: fixed;
            left: 24px;
            bottom: 100px;
            z-index: 1040;
            width: 56px;
            height: 56px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--accent-blue), var(--accent-cyan));
            border: 2px solid var(--accent-cyan);
            box-shadow: 0 0 20px rgba(6, 182, 212, 0.45);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 1.4rem;
            cursor: pointer;
            transition: var(--transition-smooth);
            opacity: 0.85;
            animation: fabFloat 3s ease-in-out infinite;
        }
        .fab-left:hover {
            opacity: 1;
            transform: scale(1.1);
            box-shadow: 0 0 32px rgba(6, 182, 212, 0.7);
        }
        @keyframes fabFloat {
            0%, 100% { transform: translateY(0); }
            50% { transform: translateY(-6px); }
        }
        @media (max-width: 1024px) {
            .nav-links { gap: 20px; }
            .footer-grid { grid-template-columns: repeat(2, 1fr); }
            .banner-content h1 { font-size: 2.2rem; }
        }
        @media (max-width: 768px) {
            .nav-links {
                display: none;
                position: absolute;
                top: 70px;
                left: 0;
                right: 0;
                background: rgba(3, 7, 18, 0.98);
                backdrop-filter: blur(24px);
                flex-direction: column;
                padding: 20px;
                gap: 16px;
                border-bottom: 1px solid var(--glass-border);
            }
            .nav-links.show { display: flex; }
            .mobile-toggle { display: block; }
            .footer-grid { grid-template-columns: 1fr; }
            .banner-content h1 { font-size: 1.8rem; }
            .section-title { font-size: 1.6rem; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .fab-left { bottom: 120px; }
        }
        @media (max-width: 520px) {
            .nav-actions .btn-login { display: none; }
            .banner-content h1 { font-size: 1.5rem; }
            .cta-sticky-bar { flex-direction: column; padding: 12px 20px; gap: 8px; }
            .btn-primary-glow, .btn-secondary-ghost { width: 100%; text-align: center; justify-content: center; }
        }

/* 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}