/* roulang page: index */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.4);
        }

        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 480px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mega-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(124, 58, 237, 0.5);
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
        }

        .mega-card-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .mega-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        /* Mobile nav */
        .nav-mobile-toggle {
            display: none;
            width: 44px;
            height: 44px;
            border-radius: 10px;
            background: rgba(255, 255, 255, 0.06);
            border: 1px solid var(--border-subtle);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.1);
        }

        .nav-mobile-toggle .bar {
            width: 20px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle.active .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-mobile-toggle.active .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-mobile-toggle.active .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-drawer {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 10, 20, 0.98);
            backdrop-filter: blur(20px);
            z-index: 99;
            padding: 20px 24px;
            flex-direction: column;
            gap: 6px;
            overflow-y: auto;
            transform: translateY(-8px);
            opacity: 0;
            transition: all var(--transition-normal);
        }

        .mobile-drawer.open {
            transform: translateY(0);
            opacity: 1;
        }

        .mobile-drawer .nav-link {
            display: block;
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            margin-bottom: 4px;
            transition: all var(--transition-fast);
        }

        .mobile-drawer .nav-link:hover,
        .mobile-drawer .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.18);
            border-color: rgba(124, 58, 237, 0.4);
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .mobile-drawer {
                display: flex;
            }
        }

        @media (min-width: 1025px) {
            .mobile-drawer {
                display: none !important;
            }
        }

        /* Hero */
        .hero-section {
            min-height: 100vh;
            display: flex;
            align-items: center;
            padding-top: var(--header-height);
            position: relative;
            overflow: hidden;
            background: linear-gradient(160deg, #0D0D1A 0%, #1A0F2E 40%, #0D0D1A 75%);
        }

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

        .hero-bg-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(13, 13, 26, 0.75) 0%, rgba(13, 13, 26, 0.88) 55%, rgba(13, 13, 26, 0.95) 100%);
            z-index: 1;
        }

        .hero-decor {
            position: absolute;
            border-radius: 50%;
            filter: blur(100px);
            z-index: 1;
            pointer-events: none;
        }

        .hero-decor-1 {
            width: 420px;
            height: 420px;
            background: rgba(124, 58, 237, 0.28);
            top: -100px;
            right: -80px;
        }

        .hero-decor-2 {
            width: 320px;
            height: 320px;
            background: rgba(6, 182, 212, 0.2);
            bottom: -60px;
            left: -100px;
        }

        .hero-content {
            position: relative;
            z-index: 2;
            width: 100%;
            padding: 60px 0;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 48px;
            align-items: center;
        }

        @media (max-width: 900px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: 36px;
            }
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid rgba(124, 58, 237, 0.45);
            border-radius: 100px;
            padding: 6px 16px;
            font-size: 13px;
            font-weight: 600;
            color: #C4B5FD;
            letter-spacing: 0.3px;
            margin-bottom: 20px;
            backdrop-filter: blur(8px);
        }

        .hero-badge .dot {
            width: 7px;
            height: 7px;
            border-radius: 50%;
            background: var(--secondary-light);
            animation: pulse-dot 2s infinite;
        }

        @keyframes pulse-dot {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }

        .hero-title {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.22;
            letter-spacing: -0.5px;
            color: #fff;
            margin-bottom: 20px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, var(--secondary-light), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        @media (max-width: 640px) {
            .hero-title {
                font-size: 32px;
                line-height: 1.28;
            }
        }

        .hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 560px;
            margin-bottom: 28px;
        }

        .hero-cta-group {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            margin-bottom: 32px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 700;
            letter-spacing: 0.3px;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 18px rgba(124, 58, 237, 0.4);
        }

        .btn-primary:hover {
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.55);
            transform: translateY(-2px) scale(1.02);
            background: linear-gradient(135deg, var(--primary-light), #9F7AEA);
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-secondary {
            background: transparent;
            color: #fff;
            border: 1px solid rgba(255, 255, 255, 0.25);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: rgba(255, 255, 255, 0.4);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0);
        }

        .hero-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
        }

        .hero-stat {
            display: flex;
            flex-direction: column;
            gap: 2px;
        }

        .hero-stat-value {
            font-size: 24px;
            font-weight: 800;
            color: #fff;
            letter-spacing: -0.5px;
        }

        .hero-stat-label {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* Hero invite panel */
        .hero-invite-panel {
            background: rgba(20, 20, 40, 0.75);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-xl);
            padding: 28px;
            backdrop-filter: blur(14px);
            box-shadow: var(--shadow-card);
        }

        .invite-title {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .invite-title .icon {
            font-size: 20px;
        }

        .invite-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 18px;
        }

        .invite-progress-wrap {
            margin-bottom: 18px;
        }

        .invite-progress-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .invite-progress-header strong {
            color: #fff;
            font-weight: 700;
        }

        .progress-bar {
            height: 8px;
            background: rgba(255, 255, 255, 0.1);
            border-radius: 100px;
            overflow: hidden;
        }

        .progress-bar-fill {
            height: 100%;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 100px;
            transition: width 0.6s ease;
            position: relative;
        }

        .progress-bar-fill::after {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 20px;
            background: rgba(255, 255, 255, 0.35);
            border-radius: 100px;
            filter: blur(4px);
        }

        .invite-rewards {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
            margin-bottom: 18px;
        }

        .invite-reward-item {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 12px 14px;
            font-size: 13px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .invite-reward-item .emoji {
            font-size: 18px;
        }

        .invite-reward-item strong {
            color: #fff;
            font-weight: 700;
        }

        .invite-code-box {
            display: flex;
            gap: 10px;
            align-items: center;
            background: rgba(0, 0, 0, 0.3);
            border: 1px dashed rgba(255, 255, 255, 0.2);
            border-radius: var(--radius-sm);
            padding: 12px 16px;
            margin-bottom: 16px;
        }

        .invite-code-box .code {
            font-size: 18px;
            font-weight: 800;
            letter-spacing: 3px;
            color: var(--secondary-light);
            flex: 1;
            user-select: all;
        }

        .invite-copy-btn {
            padding: 8px 16px;
            border-radius: 8px;
            background: rgba(124, 58, 237, 0.25);
            color: #C4B5FD;
            font-size: 13px;
            font-weight: 600;
            border: 1px solid rgba(124, 58, 237, 0.35);
            transition: all var(--transition-fast);
        }

        .invite-copy-btn:hover {
            background: rgba(124, 58, 237, 0.4);
            color: #fff;
        }

        .invite-share-btns {
            display: flex;
            gap: 8px;
        }

        .invite-share-btn {
            flex: 1;
            padding: 10px;
            border-radius: 8px;
            font-size: 13px;
            font-weight: 600;
            text-align: center;
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .invite-share-btn:hover {
            background: rgba(255, 255, 255, 0.12);
            color: #fff;
            border-color: rgba(255, 255, 255, 0.25);
        }

        /* Sections */
        .section {
            padding: 80px 0;
            position: relative;
        }

        @media (max-width: 768px) {
            .section {
                padding: 56px 0;
            }
        }

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

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            letter-spacing: 2px;
            text-transform: uppercase;
            color: var(--secondary-light);
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.3;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 680px;
        }

        @media (max-width: 640px) {
            .section-title {
                font-size: 26px;
            }
        }

        /* Pain points */
        .pain-section {
            background: var(--bg-darker);
            position: relative;
            overflow: hidden;
        }

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

        @media (max-width: 1024px) {
            .pain-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .pain-grid {
                grid-template-columns: 1fr;
            }
        }

        .pain-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .pain-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            opacity: 0;
            transition: opacity var(--transition-normal);
        }

        .pain-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
            background: var(--bg-card-hover);
        }

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

        .pain-icon {
            font-size: 32px;
            margin-bottom: 14px;
            display: block;
        }

        .pain-title {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .pain-text {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
        }

        /* Solution / Features */
        .solution-section {
            background: var(--bg-dark);
        }

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

        .solution-grid.reverse {
            grid-template-columns: 0.9fr 1.1fr;
        }

        @media (max-width: 900px) {
            .solution-grid,
            .solution-grid.reverse {
                grid-template-columns: 1fr;
                gap: 28px;
            }
        }

        .solution-image {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
            position: relative;
        }

        .solution-image img {
            width: 100%;
            height: 320px;
            object-fit: cover;
            transition: transform 0.5s ease;
        }

        .solution-image:hover img {
            transform: scale(1.04);
        }

        .solution-image::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 50%, rgba(13, 13, 26, 0.6) 100%);
            pointer-events: none;
        }

        .solution-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.35;
        }

        .solution-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .solution-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 10px;
            margin-top: 16px;
        }

        .solution-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .solution-list li::before {
            content: '✓';
            flex-shrink: 0;
            width: 22px;
            height: 22px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.2);
            color: var(--secondary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            font-weight: 700;
            margin-top: 2px;
        }

        /* Brand intro */
        .brand-section {
            background: linear-gradient(135deg, #1A0F2E 0%, #0D0D1A 50%, #0F1A2E 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .brand-card {
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 36px;
            max-width: 860px;
            margin: 0 auto;
            text-align: center;
        }

        .brand-card h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }

        .brand-card p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
        }

        /* Stats / Achievements */
        .stats-section {
            background: var(--bg-darker);
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-bottom: 40px;
        }

        @media (max-width: 900px) {
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 520px) {
            .stats-grid {
                grid-template-columns: 1fr;
            }
        }

        .stat-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 28px 20px;
            text-align: center;
            transition: all var(--transition-normal);
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
        }

        .stat-card .stat-number {
            font-size: 36px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--secondary-light), var(--primary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            letter-spacing: -1px;
            margin-bottom: 6px;
        }

        .stat-card .stat-label {
            font-size: 14px;
            color: var(--text-muted);
        }

        .stats-cover {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-card);
            border: 1px solid var(--border-subtle);
            position: relative;
        }

        .stats-cover img {
            width: 100%;
            height: 240px;
            object-fit: cover;
        }

        .stats-cover::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(90deg, rgba(13, 13, 26, 0.85) 0%, rgba(13, 13, 26, 0.3) 60%, rgba(13, 13, 26, 0.5) 100%);
        }

        /* Topic cards */
        .topic-section {
            background: var(--bg-dark);
        }

        .topic-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        @media (max-width: 900px) {
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            transition: all var(--transition-normal);
            position: relative;
            overflow: hidden;
        }

        .topic-card::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 80px;
            height: 80px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.2) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(6, 182, 212, 0.4);
            background: var(--bg-card-hover);
        }

        .topic-card .topic-emoji {
            font-size: 30px;
            margin-bottom: 12px;
            display: block;
        }

        .topic-card h4 {
            font-size: 17px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .topic-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }

        .topic-card .topic-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary-light);
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .topic-card .topic-link:hover {
            color: var(--secondary);
            gap: 8px;
        }

        /* Hot recommendations */
        .hot-section {
            background: var(--bg-darker);
        }

        .hot-layout {
            display: grid;
            grid-template-columns: 1.3fr 0.7fr;
            gap: 20px;
        }

        @media (max-width: 900px) {
            .hot-layout {
                grid-template-columns: 1fr;
            }
        }

        .hot-main-card {
            border-radius: var(--radius-xl);
            overflow: hidden;
            position: relative;
            min-height: 340px;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            display: flex;
            align-items: flex-end;
        }

        .hot-main-card img {
            position: absolute;
            inset: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hot-main-card::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, transparent 30%, rgba(13, 13, 26, 0.92) 100%);
        }

        .hot-main-info {
            position: relative;
            z-index: 2;
            padding: 28px;
        }

        .hot-main-info .hot-tag {
            display: inline-block;
            background: rgba(234, 88, 12, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 12px;
            border-radius: 100px;
            margin-bottom: 10px;
        }

        .hot-main-info h4 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }

        .hot-main-info p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
            margin-bottom: 14px;
        }

        .hot-side-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .hot-side-card {
            display: flex;
            gap: 14px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px;
            transition: all var(--transition-fast);
        }

        .hot-side-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-card);
            border-color: rgba(124, 58, 237, 0.4);
        }

        .hot-side-card img {
            width: 90px;
            height: 64px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .hot-side-info {
            flex: 1;
            min-width: 0;
        }

        .hot-side-info h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
            line-height: 1.4;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-side-info .hot-meta {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Testimonials */
        .testimonial-section {
            background: var(--bg-dark);
        }

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

        @media (max-width: 1024px) {
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }

        @media (max-width: 560px) {
            .testimonial-grid {
                grid-template-columns: 1fr;
            }
        }

        .testimonial-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition-normal);
        }

        .testimonial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
        }

        .testimonial-card .quote-mark {
            font-size: 28px;
            color: var(--primary-light);
            line-height: 1;
            opacity: 0.6;
        }

        .testimonial-card .quote-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 10px;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
        }

        .testimonial-avatar {
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            flex-shrink: 0;
        }

        .testimonial-name {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
        }

        .testimonial-role {
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .news-layout {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 32px;
        }

        @media (max-width: 900px) {
            .news-layout {
                grid-template-columns: 1fr;
            }
        }

        .news-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .news-list-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 16px 18px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            transition: all var(--transition-fast);
        }

        .news-list-item:hover {
            transform: translateX(4px);
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
        }

        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            flex-shrink: 0;
            width: 72px;
            text-align: center;
            background: rgba(255, 255, 255, 0.04);
            border-radius: 6px;
            padding: 4px 8px;
            font-weight: 600;
        }

        .news-list-item .news-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            flex: 1;
            line-height: 1.45;
        }

        .news-list-item .news-arrow {
            color: var(--secondary-light);
            font-weight: 700;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
        }

        .news-list-item:hover .news-arrow {
            transform: translateX(4px);
        }

        .news-featured {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-featured-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 20px;
            transition: all var(--transition-normal);
        }

        .news-featured-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(6, 182, 212, 0.4);
        }

        .news-featured-card .nf-date {
            font-size: 12px;
            color: var(--secondary-light);
            font-weight: 600;
            margin-bottom: 6px;
        }

        .news-featured-card h5 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }

        .news-featured-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 10px;
        }

        .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary-light);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition-fast);
        }

        .read-more:hover {
            color: var(--secondary);
            gap: 8px;
        }

        /* Deep content */
        .deep-section {
            background: var(--bg-dark);
        }

        .deep-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 32px;
        }

        @media (max-width: 900px) {
            .deep-grid {
                grid-template-columns: 1fr;
            }
        }

        .deep-article {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            padding: 28px;
            transition: all var(--transition-normal);
        }

        .deep-article:hover {
            box-shadow: var(--shadow-card-hover);
            border-color: rgba(124, 58, 237, 0.3);
        }

        .deep-article .deep-tag {
            display: inline-block;
            font-size: 12px;
            font-weight: 700;
            padding: 3px 10px;
            border-radius: 100px;
            background: rgba(124, 58, 237, 0.2);
            color: #C4B5FD;
            margin-bottom: 12px;
        }

        .deep-article h4 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .deep-article p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 12px;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(140deg, #1A0F2E 0%, #0D0D1A 40%, #0F1A2E 100%);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .cta-section::before {
            content: '';
            position: absolute;
            inset: 0;
            background: radial-gradient(ellipse at 30% 50%, rgba(124, 58, 237, 0.15) 0%, transparent 60%);
            pointer-events: none;
        }

        .cta-panel {
            position: relative;
            z-index: 2;
            text-align: center;
            max-width: 720px;
            margin: 0 auto;
            padding: 48px 32px;
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-xl);
            backdrop-filter: blur(10px);
        }

        .cta-panel h3 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: -0.5px;
        }

        .cta-panel p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
        }

        .cta-form {
            display: flex;
            gap: 10px;
            max-width: 440px;
            margin: 0 auto 16px;
        }

        @media (max-width: 520px) {
            .cta-form {
                flex-direction: column;
            }
        }

        .cta-form input {
            flex: 1;
            padding: 13px 18px;
            background: rgba(0, 0, 0, 0.35);
            border: 1px solid rgba(255, 255, 255, 0.15);
            border-radius: var(--radius-sm);
            color: #fff;
            font-size: 15px;
            font-family: inherit;
            transition: all var(--transition-fast);
        }

        .cta-form input::placeholder {
            color: rgba(255, 255, 255, 0.35);
        }

        .cta-form input:focus {
            outline: none;
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
        }

        .cta-note {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 32px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.3fr 0.8fr 0.8fr 0.8fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col ul a:hover {
            color: var(--secondary-light);
        }

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: var(--secondary-light);
        }

        /* Responsive decorations */
        @media (max-width: 768px) {
            .hero-section {
                min-height: auto;
                padding: 100px 0 40px;
            }
            .hero-stats {
                gap: 16px;
            }
        }

        @media (max-width: 520px) {
            .hero-title {
                font-size: 28px;
            }
            .hero-desc {
                font-size: 15px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
            .section {
                padding: 40px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }
            .invite-rewards {
                grid-template-columns: 1fr;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.4);
        }

        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 480px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mega-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-subtle-hover);
            transform: translateY(-2px);
        }

        .mega-card-title {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 4px;
        }

        .mega-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border-subtle);
            background: transparent;
        }

        .nav-mobile-toggle .bar {
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle.active .bar:nth-child(1) {
            transform: rotate(45deg) translate(5px, 5px);
        }

        .nav-mobile-toggle.active .bar:nth-child(2) {
            opacity: 0;
        }

        .nav-mobile-toggle.active .bar:nth-child(3) {
            transform: rotate(-45deg) translate(5px, -5px);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 10, 20, 0.98);
            z-index: 99;
            padding: 20px 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .nav-link {
            padding: 14px 16px;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .mobile-menu .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            border-color: rgba(124, 58, 237, 0.4);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding-top: calc(var(--header-height) + 28px);
            padding-bottom: 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--secondary-light);
        }

        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: var(--secondary-light);
            font-weight: 500;
        }

        /* Category Hero */
        .category-hero {
            padding: 20px 0 40px;
            display: flex;
            justify-content: space-between;
            align-items: flex-start;
            gap: 30px;
            flex-wrap: wrap;
        }

        .category-hero-main {
            flex: 1 1 600px;
            max-width: 740px;
        }

        .category-tag {
            display: inline-block;
            background: rgba(124, 58, 237, 0.18);
            border: 1px solid rgba(124, 58, 237, 0.35);
            color: var(--primary-light);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }

        .category-hero h1 {
            font-size: 40px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
            background: linear-gradient(135deg, #FFFFFF 40%, rgba(255, 255, 255, 0.7));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .category-hero-desc {
            font-size: 17px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 700px;
        }

        .category-hero-stats {
            display: flex;
            gap: 24px;
            flex: 0 0 auto;
            align-items: center;
            flex-wrap: wrap;
        }

        .stat-item {
            text-align: center;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 18px 24px;
            min-width: 110px;
        }

        .stat-number {
            font-size: 30px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 4px;
        }

        /* Article Card Grid */
        .article-section {
            padding: 40px 0 60px;
        }

        .article-section-title {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 10px;
            color: #fff;
        }

        .article-section-title::after {
            content: '';
            flex: 1;
            height: 1px;
            background: var(--border-subtle);
            max-width: 120px;
        }

        .article-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
            gap: 24px;
        }

        .article-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .article-card:hover {
            background: var(--bg-card-hover);
            border-color: rgba(124, 58, 237, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card-image {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            display: block;
            border-bottom: 1px solid var(--border-subtle);
            transition: transform var(--transition-normal);
        }

        .article-card:hover .article-card-image {
            transform: scale(1.03);
        }

        .article-card-body {
            padding: 20px 22px 22px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .article-card-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .article-card-date::before {
            content: '';
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--secondary);
            display: inline-block;
        }

        .article-card-title {
            font-size: 19px;
            font-weight: 700;
            line-height: 1.45;
            margin-bottom: 10px;
            color: #fff;
            transition: color var(--transition-fast);
        }

        .article-card:hover .article-card-title {
            color: var(--secondary-light);
        }

        .article-card-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .article-card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary-light);
            transition: all var(--transition-fast);
            align-self: flex-start;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
        }

        .article-card-link:hover {
            color: #fff;
            border-bottom-color: var(--secondary-light);
            gap: 10px;
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
            padding: 30px 0 50px;
            flex-wrap: wrap;
        }

        .pagination-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 40px;
            height: 40px;
            padding: 0 12px;
            border-radius: 10px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .pagination-btn:hover {
            background: rgba(255, 255, 255, 0.06);
            color: #fff;
            border-color: var(--border-subtle-hover);
        }

        .pagination-btn.current {
            background: rgba(124, 58, 237, 0.25);
            border-color: rgba(124, 58, 237, 0.5);
            color: #fff;
            font-weight: 700;
            box-shadow: var(--shadow-glow);
        }

        .pagination-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* FAQ */
        .faq-section {
            padding: 50px 0 60px;
        }

        .faq-section-title {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 24px;
            color: #fff;
            text-align: center;
        }

        .faq-list {
            max-width: 760px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item.active {
            border-color: rgba(124, 58, 237, 0.4);
            background: var(--bg-card-hover);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 20px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: 16px;
            width: 100%;
            text-align: left;
        }

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

        .faq-icon {
            width: 24px;
            height: 24px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--secondary-light);
            transition: transform var(--transition-fast);
            flex-shrink: 0;
        }

        .faq-item.active .faq-icon {
            transform: rotate(45deg);
            background: rgba(124, 58, 237, 0.25);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition-normal), padding var(--transition-normal);
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }

        /* CTA */
        .cta-section {
            padding: 60px 0;
        }

        .cta-panel {
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.2), rgba(6, 182, 212, 0.15)), var(--bg-card);
            border: 1px solid rgba(124, 58, 237, 0.35);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-glow);
        }

        .cta-title {
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .cta-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .cta-buttons {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 13px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 700;
            transition: all var(--transition-fast);
            letter-spacing: 0.3px;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: var(--shadow-glow);
            border: 1px solid rgba(255, 255, 255, 0.12);
        }

        .btn-primary:hover {
            background: linear-gradient(135deg, var(--primary-light), #9D6CFF);
            transform: scale(1.03);
            box-shadow: 0 0 40px rgba(124, 58, 237, 0.55);
        }

        .btn-secondary {
            background: transparent;
            border: 1px solid var(--border-subtle-hover);
            color: var(--text-primary);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--text-muted);
            transform: scale(1.02);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 30px;
            margin-top: 30px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom .legal {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-bottom .legal a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }

        .footer-bottom .legal a:hover {
            color: var(--secondary-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-hero {
                flex-direction: column;
            }
            .category-hero-stats {
                width: 100%;
                justify-content: flex-start;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .article-grid {
                grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .cta-panel {
                padding: 32px 20px;
            }
            .cta-title {
                font-size: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .header-inner {
                gap: 12px;
            }
            .logo {
                font-size: 18px;
            }
            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 15px;
                border-radius: 8px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .category-hero-desc {
                font-size: 15px;
            }
            .stat-item {
                padding: 14px 18px;
                min-width: 90px;
            }
            .stat-number {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
                width: 100%;
                justify-content: center;
            }
            .cta-buttons {
                flex-direction: column;
                width: 100%;
            }
            .pagination-btn {
                min-width: 36px;
                height: 36px;
                font-size: 13px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --accent: #F43F5E;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.4);
        }

        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 480px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mega-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-subtle-hover);
            transform: translateY(-2px);
        }

        .mega-card-title {
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            margin-bottom: 4px;
        }

        .mega-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-mobile-toggle .bar {
            width: 24px;
            height: 2px;
            background: #fff;
            border-radius: 2px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            flex-direction: column;
            gap: 12px;
            padding: 16px 24px;
            background: rgba(10, 10, 20, 0.98);
            border-top: 1px solid var(--border-subtle);
        }

        .mobile-menu.open {
            display: flex;
        }

        .mobile-menu .mobile-link {
            padding: 10px 0;
            font-size: 16px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
        }

        .mobile-menu .mobile-link.active {
            color: #fff;
            font-weight: 600;
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
        }

        @media (min-width: 1025px) {
            .mobile-menu {
                display: none !important;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }

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

        .breadcrumb a:hover {
            color: #fff;
        }

        .breadcrumb .separator {
            color: var(--text-muted);
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* Category Banner */
        .category-banner {
            position: relative;
            padding: 160px 0 80px;
            background: linear-gradient(180deg, rgba(124,58,237,0.15) 0%, var(--bg-dark) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            border-bottom: 1px solid var(--border-subtle);
        }

        .category-banner::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(ellipse at center, rgba(124,58,237,0.25) 0%, transparent 65%);
            pointer-events: none;
        }

        .category-banner .inner {
            position: relative;
            z-index: 1;
        }

        .category-banner h1 {
            font-size: 44px;
            font-weight: 800;
            letter-spacing: -0.5px;
            margin: 24px 0 12px;
            line-height: 1.2;
        }

        .category-banner .lead {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.8;
            margin-bottom: 20px;
        }

        .category-banner .badge-group {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .badge-tag {
            display: inline-flex;
            align-items: center;
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid rgba(124, 58, 237, 0.4);
            color: #fff;
        }

        /* Main Content Layout */
        .content-grid {
            display: grid;
            grid-template-columns: 1fr 320px;
            gap: 40px;
            padding: 60px 0;
        }

        @media (max-width: 900px) {
            .content-grid {
                grid-template-columns: 1fr;
                gap: 32px;
            }
        }

        /* Section Titles */
        .section-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 24px;
            display: flex;
            align-items: center;
            gap: 12px;
            line-height: 1.3;
        }

        .section-title .icon {
            width: 8px;
            height: 28px;
            border-radius: 4px;
            background: linear-gradient(180deg, var(--primary), var(--secondary));
            flex-shrink: 0;
        }

        /* Article Cards */
        .article-card {
            display: flex;
            gap: 24px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            margin-bottom: 20px;
        }

        .article-card:hover {
            background: var(--bg-card-hover);
            border-color: var(--border-subtle-hover);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .article-card .cover {
            width: 240px;
            flex-shrink: 0;
            position: relative;
            overflow: hidden;
        }

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

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

        .article-card .cover .date-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(0,0,0,0.7);
            backdrop-filter: blur(8px);
            padding: 4px 10px;
            border-radius: 6px;
            font-size: 12px;
            color: #fff;
            font-weight: 500;
        }

        .article-card .info {
            padding: 20px 20px 20px 0;
            display: flex;
            flex-direction: column;
            justify-content: center;
            flex: 1;
        }

        .article-card .info .meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 6px;
        }

        .article-card .info h3 {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 8px;
            line-height: 1.4;
            color: #fff;
        }

        .article-card .info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .btn-read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary);
            transition: all var(--transition-fast);
        }

        .btn-read-more:hover {
            color: var(--secondary-light);
            gap: 10px;
        }

        @media (max-width: 640px) {
            .article-card {
                flex-direction: column;
            }
            .article-card .cover {
                width: 100%;
                height: 180px;
            }
            .article-card .info {
                padding: 16px;
            }
        }

        /* Sidebar */
        .sidebar {
            display: flex;
            flex-direction: column;
            gap: 28px;
        }

        .sidebar-widget {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 24px;
        }

        .sidebar-widget h3 {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border-subtle);
            display: flex;
            align-items: center;
            gap: 8px;
            color: #fff;
        }

        .widget-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .widget-list .widget-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 10px;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .widget-list .widget-item:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .widget-list .widget-item .rank {
            width: 28px;
            height: 28px;
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            flex-shrink: 0;
        }

        .widget-list .widget-item .rank.rank-1 {
            background: rgba(244, 63, 94, 0.2);
            color: #F43F5E;
        }
        .widget-list .widget-item .rank.rank-2 {
            background: rgba(124, 58, 237, 0.2);
            color: #8B5CF6;
        }
        .widget-list .widget-item .rank.rank-3 {
            background: rgba(6, 182, 212, 0.2);
            color: #22D3EE;
        }
        .widget-list .widget-item .rank.rank-normal {
            background: rgba(255, 255, 255, 0.06);
            color: var(--text-muted);
        }

        .widget-list .widget-item .team-name {
            font-weight: 500;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .widget-list .widget-item .team-score {
            margin-left: auto;
            font-weight: 700;
            font-size: 16px;
            color: #fff;
        }

        .upcoming-match {
            padding: 12px;
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border-subtle);
        }

        .upcoming-match .match-time {
            font-size: 12px;
            color: var(--secondary);
            font-weight: 600;
            margin-bottom: 4px;
        }

        .upcoming-match .match-teams {
            font-size: 14px;
            color: var(--text-primary);
            font-weight: 500;
        }

        .upcoming-match .match-tag {
            font-size: 12px;
            color: var(--text-muted);
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            gap: 8px;
            justify-content: center;
            padding: 20px 0 40px;
        }

        .pagination .page-btn {
            min-width: 40px;
            height: 40px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            font-weight: 500;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            cursor: pointer;
        }

        .pagination .page-btn:hover {
            border-color: var(--border-subtle-hover);
            color: #fff;
            background: var(--bg-card-hover);
        }

        .pagination .page-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
        }

        .pagination .page-btn.disabled {
            opacity: 0.4;
            pointer-events: none;
        }

        /* FAQ */
        .faq-section {
            padding: 60px 0;
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .faq-section .section-title {
            text-align: center;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
        }

        .faq-question .faq-arrow {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform var(--transition-fast);
            font-size: 12px;
            color: var(--text-muted);
        }

        .faq-item.open .faq-arrow {
            transform: rotate(180deg);
            background: rgba(124, 58, 237, 0.2);
            color: #fff;
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 24px 18px;
        }

        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* CTA Section */
        .cta-section {
            padding: 80px 0;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.12) 0%, rgba(6, 182, 212, 0.08) 100%);
            border-bottom: 1px solid var(--border-subtle);
        }

        .cta-box {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle-hover);
            border-radius: var(--radius-xl);
            padding: 48px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .cta-box h2 {
            font-size: 32px;
            font-weight: 800;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .cta-box p {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        .cta-box .cta-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
            justify-content: center;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            background: var(--primary);
            color: #fff;
            transition: all var(--transition-fast);
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: scale(1.02);
            box-shadow: 0 6px 20px rgba(124, 58, 237, 0.55);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: 12px;
            font-size: 15px;
            font-weight: 600;
            background: transparent;
            border: 1px solid var(--border-subtle-hover);
            color: var(--text-primary);
            transition: all var(--transition-fast);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: var(--secondary);
            color: var(--secondary-light);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            padding: 60px 0 20px;
            border-top: 1px solid var(--border-subtle);
        }

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

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        .footer-brand h4 {
            font-size: 22px;
            font-weight: 800;
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h5 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .footer-bottom {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .footer-bottom .legal a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom .legal a:hover {
            color: var(--secondary-light);
        }

        /* Responsive spacing */
        @media (max-width: 768px) {
            .category-banner {
                padding: 120px 0 50px;
            }
            .category-banner h1 {
                font-size: 32px;
            }
            .cta-box {
                padding: 32px 20px;
            }
            .cta-box h2 {
                font-size: 26px;
            }
            .section-title {
                font-size: 24px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition-fast);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }
        img {
            max-width: 100%;
            display: block;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        @media (max-width: 767px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }
        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }
        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }
        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.25);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.5);
        }
        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }
        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }
        .nav-item {
            position: relative;
        }
        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 480px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }
        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }
        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }
        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }
        .mega-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-subtle-hover);
            transform: translateY(-2px);
        }
        .mega-card-title {
            font-weight: 700;
            font-size: 15px;
            color: #fff;
            margin-bottom: 4px;
        }
        .mega-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.5;
        }
        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            border: 1px solid var(--border-subtle);
            background: rgba(255, 255, 255, 0.04);
        }
        .nav-mobile-toggle .bar {
            width: 22px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }
        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-mobile-toggle[aria-expanded="true"] .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-nav {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 10, 20, 0.98);
            z-index: 99;
            padding: 24px;
            overflow-y: auto;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav .nav-link {
            display: block;
            padding: 14px 18px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.03);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .mobile-nav .nav-link:hover,
        .mobile-nav .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            border-color: rgba(124, 58, 237, 0.4);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding-top: calc(var(--header-height) + 32px);
            padding-bottom: 16px;
        }
        .breadcrumb {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            align-items: center;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            transition: color var(--transition-fast);
        }
        .breadcrumb a:hover {
            color: var(--secondary-light);
        }
        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 600;
        }

        /* Category Hero */
        .category-hero {
            padding: 40px 0 48px;
            position: relative;
            overflow: hidden;
            border-radius: var(--radius-xl);
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.25) 0%, rgba(6, 182, 212, 0.15) 50%, rgba(13, 13, 26, 0.6) 100%), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            margin-bottom: 40px;
            border: 1px solid var(--border-subtle);
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }
        .category-hero-inner {
            position: relative;
            z-index: 1;
            padding: 32px 36px;
        }
        .category-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.85), rgba(6, 182, 212, 0.85));
            color: #fff;
            font-size: 14px;
            font-weight: 700;
            padding: 8px 18px;
            border-radius: 100px;
            letter-spacing: 1px;
            margin-bottom: 16px;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.4);
        }
        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .category-hero p {
            font-size: 17px;
            color: rgba(248, 248, 252, 0.85);
            max-width: 680px;
            line-height: 1.8;
            margin-bottom: 20px;
        }
        .category-stats {
            display: flex;
            flex-wrap: wrap;
            gap: 24px;
            margin-top: 16px;
        }
        .category-stat {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: rgba(248, 248, 252, 0.75);
        }
        .category-stat strong {
            font-size: 18px;
            font-weight: 800;
            color: #fff;
        }

        /* Feature Post */
        .feature-post {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: 32px;
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            margin-bottom: 40px;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-card);
        }
        .feature-post:hover {
            border-color: rgba(124, 58, 237, 0.5);
            box-shadow: var(--shadow-card-hover);
        }
        .feature-post-image {
            position: relative;
            min-height: 320px;
            overflow: hidden;
        }
        .feature-post-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .feature-post:hover .feature-post-image img {
            transform: scale(1.04);
        }
        .feature-post-content {
            padding: 28px 32px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .post-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary-light);
            background: rgba(6, 182, 212, 0.12);
            border: 1px solid rgba(6, 182, 212, 0.3);
            padding: 4px 12px;
            border-radius: 100px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .post-date {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .feature-post h2 {
            font-size: 26px;
            font-weight: 800;
            line-height: 1.35;
            color: #fff;
            margin: 12px 0 10px;
        }
        .feature-post p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 18px;
        }

        /* Post Grid */
        .post-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 24px;
            margin-bottom: 32px;
        }
        .post-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-normal);
            box-shadow: var(--shadow-card);
            display: flex;
            flex-direction: column;
        }
        .post-card:hover {
            border-color: rgba(124, 58, 237, 0.5);
            box-shadow: var(--shadow-card-hover);
            transform: translateY(-4px);
        }
        .post-card-image {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }
        .post-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.5s ease;
        }
        .post-card:hover .post-card-image img {
            transform: scale(1.06);
        }
        .post-card-content {
            padding: 20px 24px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .post-card h3 {
            font-size: 18px;
            font-weight: 700;
            line-height: 1.4;
            color: #fff;
            margin: 10px 0 8px;
            transition: color var(--transition-fast);
        }
        .post-card:hover h3 {
            color: var(--secondary-light);
        }
        .post-card .post-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            margin-bottom: 14px;
        }
        .read-more-btn {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary-light);
            transition: all var(--transition-fast);
            align-self: flex-start;
            padding: 6px 0;
            border-bottom: 2px solid transparent;
        }
        .read-more-btn:hover {
            color: #fff;
            border-bottom-color: var(--secondary-light);
            gap: 10px;
        }

        /* Pagination */
        .pagination {
            display: flex;
            justify-content: center;
            gap: 8px;
            padding: 20px 0 8px;
        }
        .pagination a,
        .pagination span {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            min-width: 42px;
            height: 42px;
            padding: 0 14px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .pagination a:hover {
            color: #fff;
            background: rgba(124, 58, 237, 0.3);
            border-color: rgba(124, 58, 237, 0.5);
        }
        .pagination .current-page {
            color: #fff;
            background: var(--primary);
            border-color: var(--primary);
            font-weight: 700;
            box-shadow: 0 0 20px rgba(124, 58, 237, 0.4);
        }
        .pagination .dots {
            border: none;
            background: none;
            min-width: auto;
            padding: 0 4px;
        }

        /* Depth Content */
        .depth-section {
            margin: 40px 0;
            padding: 36px;
            background: var(--bg-card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
        }
        .depth-section h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 20px;
            line-height: 1.3;
        }
        .depth-section p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
            margin-bottom: 16px;
        }
        .depth-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 20px;
            margin-top: 24px;
        }
        .depth-item {
            background: rgba(255, 255, 255, 0.04);
            border-radius: var(--radius-md);
            padding: 18px 22px;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }
        .depth-item:hover {
            border-color: rgba(124, 58, 237, 0.4);
            background: rgba(255, 255, 255, 0.06);
        }
        .depth-item h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 6px;
        }
        .depth-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* FAQ */
        .faq-section {
            margin: 40px 0;
        }
        .faq-section h2 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 24px;
            text-align: center;
        }
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }
        .faq-item:hover {
            border-color: rgba(124, 58, 237, 0.35);
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            cursor: pointer;
            transition: all var(--transition-fast);
            gap: 16px;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.25);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--secondary-light);
            transition: transform var(--transition-normal);
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(124, 58, 237, 0.4);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 24px;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* CTA Section */
        .cta-section {
            margin: 40px 0;
            padding: 48px 36px;
            background: linear-gradient(135deg, rgba(124, 58, 237, 0.35) 0%, rgba(6, 182, 212, 0.2) 60%, rgba(13, 13, 26, 0.8) 100%);
            border-radius: var(--radius-xl);
            border: 1px solid rgba(124, 58, 237, 0.35);
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-section::before {
            content: '';
            position: absolute;
            top: -60%;
            left: 50%;
            transform: translateX(-50%);
            width: 600px;
            height: 600px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.25) 0%, transparent 70%);
            pointer-events: none;
        }
        .cta-section h2 {
            position: relative;
            z-index: 1;
            font-size: 30px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 14px;
        }
        .cta-section p {
            position: relative;
            z-index: 1;
            font-size: 16px;
            color: rgba(248, 248, 252, 0.85);
            max-width: 600px;
            margin: 0 auto 24px;
            line-height: 1.75;
        }
        .cta-buttons {
            position: relative;
            z-index: 1;
            display: flex;
            justify-content: center;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            padding: 14px 32px;
            border-radius: 12px;
            transition: all var(--transition-fast);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.4);
            letter-spacing: 0.5px;
        }
        .btn-primary:hover {
            transform: scale(1.03);
            box-shadow: 0 12px 32px rgba(124, 58, 237, 0.55);
        }
        .btn-secondary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: rgba(255, 255, 255, 0.08);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 14px 28px;
            border-radius: 12px;
            border: 1px solid rgba(255, 255, 255, 0.2);
            transition: all var(--transition-fast);
        }
        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.14);
            border-color: rgba(255, 255, 255, 0.35);
            transform: scale(1.02);
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 24px;
            margin-top: 60px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .footer-col ul li a:hover {
            color: var(--secondary-light);
        }
        .footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding-top: 20px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }
        .legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        .legal a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }
        .legal a:hover {
            color: var(--secondary-light);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .feature-post {
                grid-template-columns: 1fr;
            }
            .feature-post-image {
                min-height: 240px;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 34px;
            }
            .depth-grid {
                grid-template-columns: 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
            .post-grid {
                grid-template-columns: 1fr;
            }
            .category-hero-inner {
                padding: 24px 20px;
            }
            .category-hero h1 {
                font-size: 28px;
            }
            .category-hero p {
                font-size: 15px;
            }
            .feature-post-content {
                padding: 20px;
            }
            .feature-post h2 {
                font-size: 20px;
            }
            .cta-section {
                padding: 32px 20px;
            }
            .cta-section h2 {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .legal {
                justify-content: center;
            }
            .depth-section {
                padding: 24px 20px;
            }
            .depth-section h2 {
                font-size: 22px;
            }
        }
        @media (max-width: 520px) {
            .category-hero {
                border-radius: var(--radius-md);
            }
            .category-hero-inner {
                padding: 20px 16px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .category-stats {
                gap: 12px;
            }
            .post-card-content {
                padding: 16px 18px;
            }
            .post-card h3 {
                font-size: 16px;
            }
            .faq-question {
                padding: 14px 18px;
                font-size: 15px;
            }
            .btn-primary,
            .btn-secondary {
                padding: 12px 20px;
                font-size: 14px;
            }
            .depth-section {
                padding: 20px 16px;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* Header / Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
        }

        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.4);
        }

        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 480px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 12px;
        }

        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mega-card:hover {
            background: rgba(255, 255, 255, 0.08);
            border-color: var(--border-subtle-hover);
            transform: translateY(-2px);
        }

        .mega-card-title {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 4px;
        }

        .mega-card-desc {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 10px;
            border-radius: 8px;
            background: rgba(255, 255, 255, 0.04);
        }

        .nav-mobile-toggle .bar {
            display: block;
            width: 22px;
            height: 2px;
            background: #fff;
            border-radius: 1px;
            transition: all var(--transition-fast);
        }

        .nav-mobile-toggle.open .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-mobile-toggle.open .bar:nth-child(2) {
            opacity: 0;
        }
        .nav-mobile-toggle.open .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .nav-mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 10, 20, 0.98);
            backdrop-filter: blur(18px);
            z-index: 99;
            padding: 24px;
            overflow-y: auto;
        }

        .nav-mobile-menu.open {
            display: block;
        }

        .nav-mobile-menu .nav-link {
            display: block;
            padding: 14px 16px;
            font-size: 17px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            margin-bottom: 4px;
        }

        .nav-mobile-menu .nav-link:hover,
        .nav-mobile-menu .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
            .nav-mobile-toggle {
                display: flex;
            }
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 16px;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

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

        .breadcrumb .separator {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: var(--text-primary);
            font-weight: 500;
        }

        /* Hero */
        .page-hero {
            position: relative;
            min-height: 55vh;
            display: flex;
            align-items: center;
            padding: calc(var(--header-height) + 40px) 0 60px;
            background: linear-gradient(135deg, rgba(13, 13, 26, 0.92) 0%, rgba(26, 26, 46, 0.88) 50%, rgba(13, 13, 26, 0.95) 100%), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-bottom: 1px solid var(--border-subtle);
            overflow: hidden;
        }

        .page-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.3) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -5%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.2) 0%, transparent 70%);
            pointer-events: none;
        }

        .page-hero .container {
            position: relative;
            z-index: 1;
            width: 100%;
        }

        .page-hero h1 {
            font-size: 44px;
            font-weight: 800;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .page-hero .hero-subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 28px;
            line-height: 1.8;
        }

        .hero-actions {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 13px 28px;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-sm);
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .btn-primary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
            box-shadow: 0 8px 30px rgba(124, 58, 237, 0.5);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle-hover);
        }

        .btn-secondary:hover {
            background: rgba(255, 255, 255, 0.06);
            border-color: rgba(255, 255, 255, 0.22);
            transform: translateY(-2px);
        }

        .btn-sm {
            padding: 9px 18px;
            font-size: 14px;
            border-radius: 8px;
        }

        @media (max-width: 768px) {
            .page-hero {
                min-height: 45vh;
                padding: calc(var(--header-height) + 28px) 0 40px;
            }
            .page-hero h1 {
                font-size: 32px;
            }
            .page-hero .hero-subtitle {
                font-size: 16px;
            }
            .hero-actions {
                gap: 10px;
            }
        }

        @media (max-width: 480px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .btn {
                padding: 11px 20px;
                font-size: 14px;
            }
        }

        /* Section shared */
        .section {
            padding: 64px 0;
        }

        .section-dark {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

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

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--secondary-light);
            text-transform: uppercase;
            letter-spacing: 1.5px;
            margin-bottom: 10px;
        }

        .section-header h2 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            color: #fff;
            letter-spacing: -0.3px;
        }

        .section-header .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            margin-top: 12px;
            line-height: 1.8;
        }

        @media (max-width: 768px) {
            .section {
                padding: 44px 0;
            }
            .section-header h2 {
                font-size: 26px;
            }
        }

        @media (max-width: 480px) {
            .section-header h2 {
                font-size: 22px;
            }
        }

        /* Feature asymmetric */
        .feature-asymmetric {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: 40px;
            align-items: center;
        }

        .feature-asymmetric .feature-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .feature-asymmetric .feature-text p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-asymmetric .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }

        .feature-asymmetric .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-normal);
        }

        .feature-asymmetric .feature-image:hover img {
            transform: scale(1.04);
        }

        @media (max-width: 900px) {
            .feature-asymmetric {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-asymmetric .feature-image {
                aspect-ratio: 16/10;
            }
        }

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

        .topic-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .topic-card:hover {
            border-color: rgba(124, 58, 237, 0.4);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
        }

        .topic-card .topic-thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

        .topic-card .topic-thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition-normal);
        }

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

        .topic-card .topic-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(124, 58, 237, 0.9);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 5px 12px;
            border-radius: 6px;
            backdrop-filter: blur(4px);
        }

        .topic-card .topic-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .topic-card .topic-date {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 10px;
        }

        .topic-card .topic-title {
            font-size: 19px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
            line-height: 1.5;
        }

        .topic-card .topic-excerpt {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 16px;
            flex: 1;
        }

        .topic-card .read-more {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--secondary-light);
            transition: all var(--transition-fast);
        }

        .topic-card .read-more:hover {
            color: #fff;
            gap: 10px;
        }

        @media (max-width: 768px) {
            .topic-grid {
                grid-template-columns: 1fr;
            }
        }

        /* Pagination */
        .pagination {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            margin-top: 40px;
            flex-wrap: wrap;
        }

        .pagination .page-btn {
            min-width: 40px;
            height: 40px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            border-radius: var(--radius-sm);
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            padding: 0 12px;
        }

        .pagination .page-btn:hover {
            border-color: rgba(124, 58, 237, 0.5);
            color: #fff;
            background: rgba(124, 58, 237, 0.15);
        }

        .pagination .page-btn.active {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            box-shadow: 0 0 16px rgba(124, 58, 237, 0.4);
        }

        /* Stats strip */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
        }

        .stat-block {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 24px 20px;
            text-align: center;
            transition: all var(--transition-fast);
        }

        .stat-block:hover {
            border-color: rgba(124, 58, 237, 0.35);
            transform: translateY(-3px);
        }

        .stat-block .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 6px;
            background: linear-gradient(135deg, var(--primary-light), var(--secondary-light));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .stat-block .stat-label {
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        @media (max-width: 768px) {
            .stats-strip {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-block .stat-number {
                font-size: 26px;
            }
        }

        /* Squad section */
        .squad-grid {
            display: grid;
            grid-template-columns: 0.9fr 1.1fr;
            gap: 36px;
            align-items: center;
        }

        .squad-info h3 {
            font-size: 24px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            line-height: 1.4;
        }

        .squad-info p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 14px;
        }

        .squad-info .squad-tags {
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
            margin-top: 16px;
        }

        .squad-tag {
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: rgba(255, 255, 255, 0.06);
            padding: 7px 14px;
            border-radius: 20px;
            border: 1px solid var(--border-subtle);
            transition: all var(--transition-fast);
        }

        .squad-tag:hover {
            border-color: rgba(124, 58, 237, 0.5);
            color: #fff;
            background: rgba(124, 58, 237, 0.15);
        }

        .squad-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            aspect-ratio: 16/10;
        }

        .squad-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        @media (max-width: 900px) {
            .squad-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(124, 58, 237, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            cursor: pointer;
            gap: 16px;
            text-align: left;
            width: 100%;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            background: rgba(124, 58, 237, 0.2);
            color: var(--primary-light);
            font-size: 16px;
            transition: all var(--transition-fast);
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: rgba(6, 182, 212, 0.2);
            color: var(--secondary-light);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 18px;
        }

        /* CTA */
        .cta-panel {
            background: linear-gradient(135deg, var(--bg-card) 0%, rgba(124, 58, 237, 0.2) 50%, var(--bg-card) 100%);
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            box-shadow: var(--shadow-card);
        }

        .cta-panel h2 {
            font-size: 30px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: -0.3px;
        }

        .cta-panel p {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 560px;
            margin: 0 auto 24px;
            line-height: 1.8;
        }

        .cta-panel .cta-actions {
            display: flex;
            gap: 14px;
            justify-content: center;
            flex-wrap: wrap;
        }

        @media (max-width: 768px) {
            .cta-panel {
                padding: 32px 20px;
            }
            .cta-panel h2 {
                font-size: 24px;
            }
        }

        /* Footer */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 36px;
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }

        .footer-brand p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 280px;
        }

        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

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

        .footer-col ul li {
            margin-bottom: 8px;
        }

        .footer-col ul li a {
            font-size: 14px;
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: #fff;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            padding-top: 24px;
            border-top: 1px solid var(--border-subtle);
            font-size: 13px;
            color: var(--text-muted);
        }

        .footer-bottom .legal {
            display: flex;
            align-items: center;
            gap: 14px;
            flex-wrap: wrap;
        }

        .footer-bottom a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom a:hover {
            color: #fff;
        }

        @media (max-width: 900px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .footer-brand {
                grid-column: 1 / -1;
            }
        }

        @media (max-width: 520px) {
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #7C3AED;
            --primary-light: #8B5CF6;
            --secondary: #06B6D4;
            --secondary-light: #22D3EE;
            --bg-dark: #0D0D1A;
            --bg-darker: #0A0A14;
            --bg-card: #1A1A2E;
            --bg-card-hover: #20203A;
            --text-primary: #F8F8FC;
            --text-secondary: #C8C8D8;
            --text-muted: #8A8AA0;
            --border-subtle: rgba(255, 255, 255, 0.08);
            --border-subtle-hover: rgba(255, 255, 255, 0.14);
            --radius-sm: 10px;
            --radius-md: 16px;
            --radius-lg: 20px;
            --radius-xl: 24px;
            --shadow-card: 0 8px 24px rgba(0, 0, 0, 0.3);
            --shadow-card-hover: 0 16px 40px rgba(0, 0, 0, 0.45);
            --shadow-glow: 0 0 30px rgba(124, 58, 237, 0.35);
            --transition-fast: 0.18s ease;
            --transition-normal: 0.28s ease;
            --container-max: 1180px;
            --header-height: 72px;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
            background-color: var(--bg-dark);
            color: var(--text-primary);
            line-height: 1.8;
            font-size: 16px;
            overflow-x: hidden;
            min-height: 100vh;
        }

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

        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 2px solid var(--secondary);
            outline-offset: 3px;
            border-radius: 6px;
        }

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

        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
            font-size: inherit;
            color: inherit;
            transition: all var(--transition-fast);
        }

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

        @media (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        /* ========== Header / Navigation ========== */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            background: rgba(13, 13, 26, 0.92);
            backdrop-filter: blur(18px);
            -webkit-backdrop-filter: blur(18px);
            border-bottom: 1px solid var(--border-subtle);
            transition: background var(--transition-normal), box-shadow var(--transition-normal);
        }

        .site-header.scrolled {
            background: rgba(10, 10, 20, 0.97);
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: var(--header-height);
            gap: 20px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 800;
            letter-spacing: 0.5px;
            color: #fff;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            border-radius: 10px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 900;
            color: #fff;
            box-shadow: var(--shadow-glow);
        }

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }

        .nav-desktop .nav-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            border-radius: 8px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all var(--transition-fast);
            position: relative;
            white-space: nowrap;
        }

        .nav-desktop .nav-link:hover {
            color: #fff;
            background: rgba(255, 255, 255, 0.06);
        }

        .nav-desktop .nav-link.active {
            color: #fff;
            background: rgba(124, 58, 237, 0.2);
            box-shadow: inset 0 0 0 1px rgba(124, 58, 237, 0.4);
        }

        .nav-desktop .nav-link .arrow {
            font-size: 10px;
            transition: transform var(--transition-fast);
        }

        .nav-desktop .nav-item:hover .arrow {
            transform: rotate(180deg);
        }

        .nav-item {
            position: relative;
        }

        .mega-panel {
            position: absolute;
            top: calc(100% + 12px);
            right: 0;
            min-width: 520px;
            background: #15152A;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border-subtle);
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.55);
            padding: 20px;
            opacity: 0;
            visibility: hidden;
            transform: translateY(8px);
            transition: all var(--transition-normal);
            z-index: 110;
        }

        .nav-item:hover .mega-panel,
        .nav-item:focus-within .mega-panel {
            opacity: 1;
            visibility: visible;
            transform: translateY(0);
        }

        .mega-panel-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 10px;
        }

        .mega-card {
            background: rgba(255, 255, 255, 0.04);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 14px 16px;
            transition: all var(--transition-fast);
            display: block;
        }

        .mega-card:hover {
            background: rgba(124, 58, 237, 0.15);
            border-color: rgba(124, 58, 237, 0.4);
            transform: translateY(-2px);
        }

        .mega-card-title {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-primary);
            margin-bottom: 4px;
        }

        .mega-card-desc {
            font-size: 12px;
            color: var(--text-muted);
            line-height: 1.5;
        }

        .nav-mobile-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            border-radius: 8px;
            transition: background var(--transition-fast);
            flex-shrink: 0;
        }

        .nav-mobile-toggle:hover {
            background: rgba(255, 255, 255, 0.08);
        }

        .nav-mobile-toggle .bar {
            width: 24px;
            height: 2px;
            background: var(--text-primary);
            border-radius: 2px;
            transition: all var(--transition-normal);
        }

        .nav-mobile-toggle.open .bar:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }

        .nav-mobile-toggle.open .bar:nth-child(2) {
            opacity: 0;
        }

        .nav-mobile-toggle.open .bar:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(10, 10, 20, 0.98);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            z-index: 99;
            padding: 20px 24px 40px;
            overflow-y: auto;
            transform: translateX(100%);
            transition: transform var(--transition-normal);
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu .mobile-nav-link {
            display: block;
            padding: 14px 0;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border-subtle);
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

        .mobile-menu .mobile-nav-link:hover,
        .mobile-menu .mobile-nav-link.active {
            color: #fff;
            padding-left: 8px;
        }

        .mobile-menu .mobile-nav-link.active {
            color: var(--secondary-light);
        }

        /* ========== Breadcrumb ========== */
        .breadcrumb-wrap {
            padding-top: calc(var(--header-height) + 28px);
            background: var(--bg-darker);
            border-bottom: 1px solid var(--border-subtle);
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 12px 0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .breadcrumb a:hover {
            color: var(--secondary-light);
        }

        .breadcrumb .sep {
            color: var(--text-muted);
            opacity: 0.6;
        }

        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* ========== Category Hero ========== */
        .category-hero {
            background: linear-gradient(165deg, #0D0D1A 0%, #15152A 30%, #1A1A2E 55%, #0D0D1A 100%);
            padding: 48px 0 56px;
            border-bottom: 1px solid var(--border-subtle);
            position: relative;
            overflow: hidden;
        }

        .category-hero::before {
            content: '';
            position: absolute;
            top: -200px;
            right: -200px;
            width: 600px;
            height: 600px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.18) 0%, transparent 70%);
            pointer-events: none;
        }

        .category-hero::after {
            content: '';
            position: absolute;
            bottom: -180px;
            left: -150px;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(6, 182, 212, 0.12) 0%, transparent 70%);
            pointer-events: none;
        }

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

        .category-hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 16px;
            background: rgba(124, 58, 237, 0.15);
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            color: var(--secondary-light);
            margin-bottom: 16px;
        }

        .category-hero h1 {
            font-size: 42px;
            font-weight: 800;
            line-height: 1.25;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
            color: #fff;
        }

        .category-hero .hero-desc {
            font-size: 17px;
            line-height: 1.85;
            color: var(--text-secondary);
            max-width: 720px;
            margin-bottom: 28px;
        }

        .category-hero .hero-actions {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            align-items: center;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-sm);
            font-size: 15px;
            font-weight: 600;
            letter-spacing: 0.3px;
            transition: all var(--transition-normal);
            white-space: nowrap;
        }

        .btn-primary {
            background: linear-gradient(135deg, var(--primary), var(--primary-light));
            color: #fff;
            box-shadow: 0 4px 16px rgba(124, 58, 237, 0.35);
            border: 1px solid rgba(124, 58, 237, 0.5);
        }

        .btn-primary:hover {
            transform: translateY(-2px) scale(1.02);
            box-shadow: 0 8px 24px rgba(124, 58, 237, 0.55);
            background: linear-gradient(135deg, var(--primary-light), var(--primary));
        }

        .btn-primary:active {
            transform: translateY(0) scale(0.98);
        }

        .btn-secondary {
            background: transparent;
            color: var(--text-primary);
            border: 1px solid var(--border-subtle-hover);
            backdrop-filter: blur(4px);
        }

        .btn-secondary:hover {
            border-color: var(--secondary);
            background: rgba(6, 182, 212, 0.1);
            color: var(--secondary-light);
            transform: translateY(-2px);
        }

        .btn-secondary:active {
            transform: translateY(0) scale(0.98);
        }

        /* ========== Section Common ========== */
        .section {
            padding: 64px 0;
        }

        .section-alt {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            border-bottom: 1px solid var(--border-subtle);
        }

        .section-header {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 20px;
            margin-bottom: 36px;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-size: 30px;
            font-weight: 700;
            letter-spacing: -0.3px;
            line-height: 1.35;
            color: #fff;
        }

        .section-header .section-sub {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 500px;
            text-align: right;
            line-height: 1.6;
        }

        .section-header h2 .accent {
            color: var(--secondary-light);
        }

        /* ========== Stats Strip ========== */
        .stats-strip {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 16px;
            margin-bottom: 24px;
        }

        .stat-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            padding: 20px 22px;
            text-align: center;
            transition: all var(--transition-fast);
        }

        .stat-item:hover {
            border-color: rgba(124, 58, 237, 0.4);
            background: var(--bg-card-hover);
            transform: translateY(-2px);
        }

        .stat-number {
            font-size: 32px;
            font-weight: 800;
            color: var(--secondary-light);
            line-height: 1.2;
            margin-bottom: 4px;
        }

        .stat-label {
            font-size: 13px;
            color: var(--text-muted);
            font-weight: 500;
        }

        /* ========== Resource Cards Grid ========== */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 22px;
        }

        .resource-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition-normal);
            display: flex;
            flex-direction: column;
        }

        .resource-card:hover {
            transform: translateY(-4px);
            border-color: rgba(124, 58, 237, 0.45);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
        }

        .resource-card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            position: relative;
        }

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

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

        .resource-card-img .tag-sticker {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(124, 58, 237, 0.9);
            color: #fff;
            font-size: 11px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            backdrop-filter: blur(4px);
        }

        .resource-card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .resource-card-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
            line-height: 1.4;
        }

        .resource-card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }

        .resource-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border-subtle);
            gap: 10px;
        }

        .resource-meta-info {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }

        .resource-meta-info span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .btn-download {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 8px 16px;
            background: rgba(124, 58, 237, 0.2);
            border: 1px solid rgba(124, 58, 237, 0.4);
            border-radius: var(--radius-sm);
            color: var(--secondary-light);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition-fast);
            white-space: nowrap;
        }

        .btn-download:hover {
            background: rgba(124, 58, 237, 0.35);
            border-color: rgba(124, 58, 237, 0.6);
            transform: translateY(-1px);
            box-shadow: 0 4px 12px rgba(124, 58, 237, 0.3);
        }

        /* ========== Feature Split ========== */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 40px;
            align-items: center;
        }

        .feature-split.reverse {
            grid-template-columns: 1.2fr 1fr;
        }

        .feature-content h3 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 14px;
            color: #fff;
            line-height: 1.4;
        }

        .feature-content p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border-subtle);
            box-shadow: var(--shadow-card);
            aspect-ratio: 4/3;
        }

        .feature-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

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

        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }

        .feature-list .check-icon {
            flex-shrink: 0;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: rgba(6, 182, 212, 0.2);
            border: 1px solid rgba(6, 182, 212, 0.4);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 11px;
            color: var(--secondary-light);
            margin-top: 2px;
        }

        /* ========== Steps / Process ========== */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 18px;
        }

        .step-card {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-lg);
            padding: 26px 22px;
            text-align: center;
            transition: all var(--transition-normal);
            position: relative;
        }

        .step-card:hover {
            border-color: rgba(6, 182, 212, 0.45);
            transform: translateY(-4px);
            box-shadow: var(--shadow-card-hover);
            background: var(--bg-card-hover);
        }

        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: #fff;
            font-size: 20px;
            font-weight: 800;
            margin-bottom: 14px;
            box-shadow: 0 4px 14px rgba(124, 58, 237, 0.35);
        }

        .step-card h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 8px;
            color: #fff;
        }

        .step-card p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.6;
            margin: 0;
        }

        /* ========== CTA Panel ========== */
        .cta-panel {
            background: linear-gradient(135deg, #1A1028 0%, #12122A 40%, #0D1A24 100%);
            border: 1px solid rgba(124, 58, 237, 0.3);
            border-radius: var(--radius-xl);
            padding: 48px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
            box-shadow: 0 16px 48px rgba(0, 0, 0, 0.35);
        }

        .cta-panel::before {
            content: '';
            position: absolute;
            top: -80px;
            left: 50%;
            transform: translateX(-50%);
            width: 400px;
            height: 400px;
            background: radial-gradient(circle, rgba(124, 58, 237, 0.22) 0%, transparent 70%);
            pointer-events: none;
        }

        .cta-panel h3 {
            font-size: 28px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .cta-panel p {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            margin: 0 auto 24px;
            line-height: 1.75;
            position: relative;
            z-index: 1;
        }

        .cta-panel .cta-actions {
            display: flex;
            justify-content: center;
            gap: 12px;
            flex-wrap: wrap;
            position: relative;
            z-index: 1;
        }

        /* ========== FAQ ========== */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .faq-item {
            background: var(--bg-card);
            border: 1px solid var(--border-subtle);
            border-radius: var(--radius-md);
            overflow: hidden;
            transition: all var(--transition-fast);
        }

        .faq-item:hover {
            border-color: rgba(124, 58, 237, 0.3);
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            font-size: 15px;
            font-weight: 600;
            color: var(--text-primary);
            cursor: pointer;
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition-fast);
            font-family: inherit;
        }

        .faq-question:hover {
            background: rgba(255, 255, 255, 0.04);
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: rgba(124, 58, 237, 0.15);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--secondary-light);
            transition: transform var(--transition-normal);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(45deg);
            background: rgba(6, 182, 212, 0.2);
            color: var(--secondary-light);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 22px 20px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.75;
            margin: 0;
        }

        /* ========== Footer ========== */
        .site-footer {
            background: var(--bg-darker);
            border-top: 1px solid var(--border-subtle);
            padding: 48px 0 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 36px;
            border-bottom: 1px solid var(--border-subtle);
        }

        .footer-brand h4 {
            font-size: 20px;
            font-weight: 800;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            color: var(--text-muted);
            line-height: 1.7;
            margin: 0;
            max-width: 260px;
        }

        .footer-col h5 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .footer-col ul li a {
            font-size: 13px;
            color: var(--text-muted);
            transition: color var(--transition-fast), padding-left var(--transition-fast);
        }

        .footer-col ul li a:hover {
            color: var(--secondary-light);
            padding-left: 4px;
        }

        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 20px 0;
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }

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

        .footer-bottom .legal a {
            color: var(--text-muted);
            transition: color var(--transition-fast);
        }

        .footer-bottom .legal a:hover {
            color: var(--secondary-light);
        }

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

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

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

            .feature-split,
            .feature-split.reverse {
                grid-template-columns: 1fr;
                gap: 28px;
            }

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

            .category-hero h1 {
                font-size: 34px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }

            .nav-mobile-toggle {
                display: flex;
            }

            .mobile-menu {
                display: block;
            }

            .section {
                padding: 48px 0;
            }

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

            .section-header .section-sub {
                text-align: left;
                max-width: 100%;
            }

            .resource-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }

            .stats-strip {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
            }

            .stat-number {
                font-size: 26px;
            }

            .cta-panel {
                padding: 32px 24px;
            }

            .cta-panel h3 {
                font-size: 24px;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }

            .footer-bottom .legal {
                justify-content: center;
            }

            .category-hero {
                padding: 32px 0 40px;
            }

            .category-hero h1 {
                font-size: 28px;
            }

            .category-hero .hero-desc {
                font-size: 15px;
            }

            .steps-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }

            .step-card {
                padding: 20px 18px;
                text-align: left;
                display: flex;
                align-items: flex-start;
                gap: 14px;
            }

            .step-number {
                margin-bottom: 0;
                flex-shrink: 0;
                width: 40px;
                height: 40px;
                font-size: 17px;
            }

            .step-card h4 {
                margin-bottom: 4px;
            }

            .btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .stats-strip {
                grid-template-columns: 1fr;
                gap: 10px;
            }

            .stat-item {
                padding: 14px 16px;
            }

            .stat-number {
                font-size: 24px;
            }

            .category-hero h1 {
                font-size: 24px;
            }

            .hero-actions {
                flex-direction: column;
                align-items: stretch;
            }

            .btn {
                justify-content: center;
            }

            .mega-panel {
                min-width: auto;
                width: 100%;
                left: 0;
                right: 0;
            }
        }