/* roulang page: index */
:root {
            --primary: #6C3BF4;
            --primary-dark: #5B2ED6;
            --primary-light: #F4F1FA;
            --accent: #2DD4BF;
            --bg-warm: #FAFAF8;
            --bg-light: #F4F1FA;
            --bg-dark: #17111F;
            --text-main: #24212B;
            --text-secondary: #5D5866;
            --text-inverse: #F5F3F7;
            --border: #E8E4F0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto Mono", monospace;
            --max-w: 1280px;
            --pad-x: 24px;
            --section-space: 96px;
            --mobile-section-space: 56px;
        }

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

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-body);
            color: var(--text-main);
            background: var(--bg-warm);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: var(--pad-x);
            padding-right: var(--pad-x);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all 0.25s ease;
        }

        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #9D66FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 24px;
            height: 24px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .search-icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all 0.25s;
        }

        .search-icon-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
            border: none;
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s;
        }

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px var(--pad-x) 20px;
            box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            border-radius: 10px;
        }

        /* Hero */
        .hero-section {
            position: relative;
            background: var(--bg-dark);
            min-height: 640px;
            display: flex;
            align-items: center;
            overflow: hidden;
            padding-top: 0;
            padding-bottom: 0;
        }

        .hero-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/8fc838a62844de63.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.32;
            z-index: 1;
        }

        .hero-overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(23, 17, 31, 0.88) 0%, rgba(23, 17, 31, 0.65) 50%, rgba(23, 17, 31, 0.82) 100%);
            z-index: 2;
        }

        .hero-container {
            position: relative;
            z-index: 3;
            padding: 100px var(--pad-x);
            display: grid;
            grid-template-columns: 1.1fr 0.9fr;
            gap: 56px;
            align-items: center;
            width: 100%;
            max-width: var(--max-w);
            margin: 0 auto;
        }

        .hero-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: rgba(108, 59, 244, 0.28);
            color: #C4B5FD;
            padding: 6px 16px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
            letter-spacing: 0.8px;
            margin-bottom: 20px;
            border: 1px solid rgba(108, 59, 244, 0.35);
            backdrop-filter: blur(4px);
        }

        .hero-tag .dot {
            width: 8px;
            height: 8px;
            border-radius: 50%;
            background: var(--accent);
            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: 52px;
            font-weight: 700;
            line-height: 1.25;
            color: #fff;
            margin-bottom: 20px;
            letter-spacing: -0.5px;
        }

        .hero-title .highlight {
            background: linear-gradient(135deg, #A78BFA, var(--accent));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            background-clip: text;
        }

        .hero-desc {
            font-size: 17px;
            color: #C9C0D4;
            line-height: 1.9;
            max-width: 560px;
            margin-bottom: 32px;
        }

        .hero-btns {
            display: flex;
            flex-wrap: wrap;
            gap: 14px;
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: var(--primary);
            color: #fff;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 59, 244, 0.35);
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background: transparent;
            color: #E5DEFF;
            padding: 13px 26px;
            border-radius: var(--radius-sm);
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            border: 1px solid rgba(200, 180, 255, 0.4);
            transition: all 0.3s;
        }

        .btn-secondary:hover {
            background: rgba(108, 59, 244, 0.2);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
        }

        .hero-visual {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.45);
            aspect-ratio: 4/3;
            background: var(--bg-light);
        }

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

        .hero-visual:hover img {
            transform: scale(1.04);
        }

        .hero-visual-badge {
            position: absolute;
            bottom: 16px;
            left: 16px;
            background: rgba(23, 17, 31, 0.85);
            color: #fff;
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 13px;
            font-weight: 500;
            backdrop-filter: blur(6px);
            border: 1px solid rgba(255, 255, 255, 0.18);
        }

        /* Section common */
        .section {
            padding: var(--section-space) 0;
        }

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

        .section-dark {
            background: var(--bg-dark);
            color: var(--text-inverse);
        }

        .section-header {
            max-width: 720px;
            margin-bottom: 48px;
        }

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 1.2px;
            text-transform: uppercase;
            margin-bottom: 10px;
        }

        .section-title {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.35;
            margin-bottom: 14px;
            color: inherit;
        }

        .section-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.85;
        }
        .section-dark .section-desc {
            color: #BFB8CC;
        }

        /* Features */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(12, 1fr);
            gap: 20px;
        }

        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px;
            box-shadow: var(--shadow);
            transition: all 0.3s;
            grid-column: span 4;
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
            border-color: rgba(108, 59, 244, 0.3);
        }

        .feature-card.wide {
            grid-column: span 8;
            flex-direction: row;
            align-items: center;
            gap: 24px;
        }

        .feature-card.wide .feature-icon {
            flex-shrink: 0;
            width: 64px;
            height: 64px;
        }

        .feature-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            flex-shrink: 0;
        }

        .feature-icon svg {
            width: 26px;
            height: 26px;
        }

        .feature-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Scenarios */
        .scenario-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 16px;
        }

        .scenario-item {
            display: flex;
            gap: 18px;
            align-items: flex-start;
            background: #fff;
            border-radius: var(--radius);
            padding: 22px 24px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .scenario-item:hover {
            border-color: rgba(108, 59, 244, 0.3);
            box-shadow: var(--shadow);
        }

        .scenario-num {
            width: 40px;
            height: 40px;
            border-radius: 12px;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
            font-family: var(--font-num);
        }

        .scenario-item h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .scenario-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }

        /* Screenshot */
        .screenshot-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .screenshot-card {
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
        }

        .screenshot-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .screenshot-card .shot-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
        }

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

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

        .screenshot-card .shot-caption {
            padding: 16px 20px;
        }

        .screenshot-card .shot-caption h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .screenshot-card .shot-caption p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

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

        .case-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all 0.3s;
        }

        .case-card:hover {
            box-shadow: var(--shadow-hover);
            border-color: rgba(108, 59, 244, 0.25);
        }

        .case-metrics {
            display: flex;
            gap: 28px;
            flex-wrap: wrap;
        }

        .case-metric .num {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
            line-height: 1.2;
        }

        .case-metric .label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .case-card h3 {
            font-size: 18px;
            font-weight: 600;
        }

        .case-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .case-tag {
            display: inline-block;
            padding: 3px 12px;
            border-radius: 999px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
        }

        /* Brand intro */
        .brand-intro {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .brand-visual {
            border-radius: 20px;
            overflow: hidden;
            background: var(--bg-light);
            aspect-ratio: 4/3;
        }

        .brand-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .brand-info h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .brand-info p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.9;
            margin-bottom: 16px;
        }

        .brand-points {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .brand-point {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            padding: 6px 14px;
            border-radius: 999px;
            font-size: 13px;
            font-weight: 500;
        }

        /* Pricing */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
            align-items: stretch;
        }

        .price-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px 28px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            display: flex;
            flex-direction: column;
            gap: 14px;
            transition: all 0.3s;
            position: relative;
        }

        .price-card:hover {
            box-shadow: var(--shadow-hover);
        }

        .price-card.highlight {
            border-color: var(--primary);
            box-shadow: 0 8px 28px rgba(108, 59, 244, 0.18);
            background: #fff;
        }

        .price-card .badge {
            position: absolute;
            top: -12px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--primary);
            color: #fff;
            padding: 4px 20px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            white-space: nowrap;
        }

        .price-card h3 {
            font-size: 20px;
            font-weight: 600;
        }

        .price-card .price {
            font-size: 40px;
            font-weight: 700;
            color: var(--primary);
            font-family: var(--font-num);
            line-height: 1;
        }

        .price-card .price span {
            font-size: 16px;
            font-weight: 400;
            color: var(--text-secondary);
        }

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

        .price-card ul li {
            font-size: 14px;
            color: var(--text-secondary);
            padding-left: 22px;
            position: relative;
        }

        .price-card ul li::before {
            content: "✓";
            position: absolute;
            left: 0;
            color: var(--accent);
            font-weight: 700;
        }

        .price-card .btn-primary,
        .price-card .btn-secondary {
            width: 100%;
            justify-content: center;
            margin-top: auto;
        }

        /* Testimonials */
        .testimonial-wall {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .testimonial-card {
            background: #fff;
            border-radius: var(--radius);
            padding: 24px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
        }

        .testimonial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .testimonial-card:nth-child(2) {
            transform: translateY(16px);
        }
        .testimonial-card:nth-child(4) {
            transform: translateY(-8px);
        }
        .testimonial-card:nth-child(2):hover,
        .testimonial-card:nth-child(4):hover {
            transform: translateY(0);
        }

        .testimonial-card .stars {
            color: #F5B50A;
            font-size: 14px;
            letter-spacing: 2px;
            margin-bottom: 10px;
        }

        .testimonial-card blockquote {
            font-size: 14px;
            color: var(--text-main);
            line-height: 1.75;
            margin-bottom: 14px;
        }

        .testimonial-user {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .testimonial-user .avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            color: var(--primary);
            font-size: 16px;
            flex-shrink: 0;
        }

        .testimonial-user .name {
            font-size: 14px;
            font-weight: 600;
        }

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

        /* Community quotes */
        .community-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 14px;
        }

        .community-quote {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 18px 20px;
            border-left: 3px solid var(--primary);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
            transition: all 0.3s;
        }

        .community-quote:hover {
            box-shadow: var(--shadow);
            border-left-color: var(--accent);
        }

        .community-quote p {
            font-size: 14px;
            line-height: 1.75;
            margin-bottom: 8px;
        }

        .community-quote .meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-secondary);
        }

        .community-quote .meta .likes {
            color: var(--primary);
            font-weight: 600;
        }

        /* News list */
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

        .news-item {
            display: flex;
            gap: 20px;
            background: #fff;
            border-radius: var(--radius);
            padding: 18px 20px;
            border: 1px solid var(--border);
            transition: all 0.3s;
        }

        .news-item:hover {
            box-shadow: var(--shadow);
            border-color: rgba(108, 59, 244, 0.25);
        }

        .news-thumb {
            width: 140px;
            flex-shrink: 0;
            border-radius: 10px;
            overflow: hidden;
            aspect-ratio: 16/10;
            background: var(--bg-light);
        }

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

        .news-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 6px;
        }

        .news-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-meta {
            font-size: 12px;
            color: var(--text-secondary);
        }

        .news-meta .date {
            margin-right: 12px;
        }

        .news-meta .category {
            color: var(--primary);
            font-weight: 500;
        }

        /* CTA banner */
        .cta-banner {
            position: relative;
            border-radius: 20px;
            overflow: hidden;
            background: var(--bg-dark);
            padding: 64px 48px;
            text-align: center;
            color: #fff;
        }

        .cta-banner .cta-bg {
            position: absolute;
            inset: 0;
            background-image: url('/assets/images/67acd3c40d029eba.webp');
            background-size: cover;
            background-position: center;
            opacity: 0.2;
            z-index: 1;
        }

        .cta-content {
            position: relative;
            z-index: 2;
        }

        .cta-content h2 {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .cta-content p {
            font-size: 16px;
            color: #C9C0D4;
            max-width: 600px;
            margin: 0 auto 28px;
            line-height: 1.8;
        }

        /* Match schedule */
        .schedule-table-wrap {
            overflow-x: auto;
            border-radius: var(--radius);
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            background: #fff;
        }

        .schedule-table {
            width: 100%;
            border-collapse: collapse;
            min-width: 720px;
        }

        .schedule-table thead {
            background: var(--primary);
            color: #fff;
        }

        .schedule-table th {
            padding: 14px 20px;
            text-align: left;
            font-weight: 600;
            font-size: 14px;
        }

        .schedule-table td {
            padding: 14px 20px;
            font-size: 14px;
            border-bottom: 1px solid var(--border);
            color: var(--text-main);
        }

        .schedule-table tbody tr {
            transition: background 0.25s;
        }

        .schedule-table tbody tr:hover {
            background: var(--primary-light);
        }

        .schedule-table .status-badge {
            display: inline-block;
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 500;
        }

        .status-badge.live {
            background: #FFE4E6;
            color: #D6336C;
        }
        .status-badge.upcoming {
            background: #E6F7F4;
            color: #0D9488;
        }
        .status-badge.finished {
            background: #F0F0F2;
            color: #7A7485;
        }

        /* Game zones */
        .game-strip {
            display: flex;
            gap: 16px;
            overflow-x: auto;
            padding-bottom: 16px;
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
        }

        .game-card {
            flex: 0 0 auto;
            width: 260px;
            scroll-snap-align: start;
            border-radius: var(--radius);
            overflow: hidden;
            background: #fff;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
            transition: all 0.3s;
        }

        .game-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .game-card .game-cover {
            aspect-ratio: 16/9;
            background: var(--bg-light);
            overflow: hidden;
        }

        .game-card .game-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s;
        }
        .game-card:hover .game-cover img {
            transform: scale(1.06);
        }

        .game-card .game-body {
            padding: 16px;
        }

        .game-card .game-body h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 4px;
        }

        .game-card .game-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* Academy */
        .academy-grid {
            display: grid;
            grid-template-columns: 2fr 1fr;
            gap: 20px;
        }

        .academy-main {
            background: #fff;
            border-radius: var(--radius);
            padding: 32px;
            border: 1px solid var(--border);
            box-shadow: var(--shadow);
        }
        .academy-main h3 {
            font-size: 22px;
            font-weight: 600;
            margin-bottom: 12px;
        }
        .academy-main p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 16px;
        }

        .academy-steps {
            display: flex;
            flex-direction: column;
            gap: 12px;
            list-style: none;
        }

        .academy-steps li {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 14px;
            padding: 10px 14px;
            background: var(--bg-light);
            border-radius: 10px;
        }

        .academy-steps .step-num {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 13px;
            font-weight: 700;
            flex-shrink: 0;
            font-family: var(--font-num);
        }

        /* Partners */
        .partner-wall {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 14px;
        }

        .partner-item {
            background: #fff;
            border-radius: var(--radius-sm);
            padding: 22px;
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 15px;
            transition: all 0.3s;
            text-align: center;
        }

        .partner-item:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow);
        }

        /* FAQ */
        .faq-list {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            box-shadow: 0 1px 8px rgba(28, 18, 48, 0.04);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow);
        }

        .faq-q {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            padding: 18px 24px;
            background: none;
            cursor: pointer;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            transition: all 0.25s;
        }

        .faq-q:hover {
            color: var(--primary);
        }
        .faq-q .arrow {
            width: 28px;
            height: 28px;
            border-radius: 8px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            transition: transform 0.3s;
            flex-shrink: 0;
        }
        .faq-q .arrow svg {
            width: 14px;
            height: 14px;
            color: var(--primary);
        }
        .faq-item.open .faq-q .arrow {
            transform: rotate(180deg);
        }

        .faq-a {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            display: none;
        }

        .faq-item.open .faq-a {
            display: block;
        }

        /* Subscribe */
        .subscribe-form {
            display: flex;
            gap: 10px;
            max-width: 560px;
            margin: 0 auto;
        }

        .subscribe-form input {
            flex: 1;
            padding: 14px 20px;
            border-radius: var(--radius-sm);
            background: #fff;
            border: 1px solid var(--border);
            font-size: 15px;
            color: var(--text-main);
            transition: all 0.3s;
        }
        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 59, 244, 0.15);
        }
        .subscribe-form input::placeholder {
            color: #A9A3B5;
        }

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: #BFB8CC;
            padding: 64px 0 32px;
        }

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

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.8;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: #BFB8CC;
            padding: 4px 0;
            transition: color 0.25s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 13px;
        }

        .footer-bottom a {
            color: #BFB8CC;
            transition: color 0.25s;
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }

        .footer-bottom .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.25);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .hero-container {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 72px var(--pad-x);
            }
            .hero-title { font-size: 42px; }
            .hero-desc { max-width: 100%; }
            .hero-visual { aspect-ratio: 16/9; }

            .feature-card { grid-column: span 6; }
            .feature-card.wide { grid-column: span 12; }

            .brand-intro {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .testimonial-wall { grid-template-columns: repeat(2, 1fr); }
            .testimonial-card:nth-child(2),
            .testimonial-card:nth-child(4) { transform: none; }
            .pricing-grid { grid-template-columns: 1fr 1fr; }
            .price-card.highlight { grid-column: span 2; }
            .screenshot-row { grid-template-columns: repeat(2, 1fr); }
            .case-grid { grid-template-columns: 1fr; }
            .news-thumb { width: 110px; }
            .community-list { grid-template-columns: 1fr; }
            .partner-wall { grid-template-columns: repeat(3, 1fr); }
            .academy-grid { grid-template-columns: 1fr; }
            .footer-grid { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .nav-desktop { display: none; }
            .nav-toggle { display: flex; }
            .mobile-menu { display: block; }
            .mobile-menu .nav-link.active::after { display: none; }

            .section { padding: 56px 0; }
            .hero-title { font-size: 34px; }
            .hero-desc { font-size: 15px; }
            .feature-card { grid-column: span 12; }
            .feature-card.wide { flex-direction: column; align-items: flex-start; gap: 16px; }
            .scenario-list { grid-template-columns: 1fr; }
            .testimonial-wall { grid-template-columns: 1fr; }
            .pricing-grid { grid-template-columns: 1fr; }
            .price-card.highlight { grid-column: span 1; }
            .screenshot-row { grid-template-columns: 1fr; }
            .partner-wall { grid-template-columns: repeat(2, 1fr); }
            .subscribe-form { flex-direction: column; }
            .footer-grid { grid-template-columns: 1fr; }
            .cta-banner { padding: 40px 24px; }
            .news-item { flex-direction: column; }
            .news-thumb { width: 100%; aspect-ratio: 16/9; }
            .faq-q { font-size: 15px; padding: 14px 16px; }
            .faq-a { padding: 0 16px 14px; }
            .brand-points { display: flex; flex-wrap: wrap; }
        }

        @media (max-width: 520px) {
            :root { --pad-x: 16px; }
            .hero-title { font-size: 28px; }
            .hero-btns { flex-direction: column; }
            .hero-btns .btn-primary,
            .hero-btns .btn-secondary { width: 100%; justify-content: center; }
            .scenario-num { width: 32px; height: 32px; font-size: 14px; }
            .case-metric .num { font-size: 26px; }
            .partner-wall { grid-template-columns: 1fr 1fr; gap: 8px; }
            .partner-item { padding: 14px 8px; font-size: 13px; }
            .footer-bottom { flex-direction: column; text-align: center; }
            .schedule-table-wrap { max-width: 100%; }
            .game-card { width: 220px; }
        }

/* roulang page: category2 */
:root {
            --primary: #6C3BF4;
            --primary-dark: #5B2ED6;
            --primary-light: #F4F1FA;
            --accent: #2DD4BF;
            --bg-warm: #FAFAF8;
            --bg-light: #F4F1FA;
            --bg-dark: #17111F;
            --text-main: #24212B;
            --text-secondary: #5D5866;
            --text-inverse: #F5F3F7;
            --border: #E8E4F0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto Mono", monospace;
            --max-w: 1280px;
            --pad-x: 24px;
            --section-space: 96px;
            --mobile-section-space: 56px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-body);
            color: var(--text-main);
            background: var(--bg-warm);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: var(--pad-x);
            padding-right: var(--pad-x);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all 0.25s ease;
        }

        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #9D66FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 24px;
            height: 24px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .search-icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all 0.25s;
        }

        .search-icon-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
            border: none;
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s;
        }

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

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

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px var(--pad-x) 20px;
            box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            font-size: 16px;
            margin-bottom: 4px;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .breadcrumb-list {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            flex-wrap: wrap;
            min-width: 0;
        }

        .breadcrumb-list a {
            color: var(--text-secondary);
            white-space: nowrap;
        }

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

        .breadcrumb-list .sep {
            color: #c9c4d4;
            flex-shrink: 0;
        }

        .breadcrumb-list .current {
            color: var(--primary);
            font-weight: 600;
            white-space: nowrap;
        }

        .breadcrumb-back {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .breadcrumb-back:hover {
            color: var(--primary-dark);
        }

        /* Category Hero */
        .category-hero {
            background: linear-gradient(180deg, var(--primary-light) 0%, var(--bg-warm) 100%);
            padding: 48px 0 40px;
            border-bottom: 1px solid var(--border);
        }

        .category-hero h1 {
            font-family: var(--font-title);
            font-size: 42px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 1px;
            margin-bottom: 12px;
            line-height: 1.3;
        }

        .category-hero .cat-desc {
            font-size: 17px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.8;
        }

        .cat-meta {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-top: 18px;
            flex-wrap: wrap;
        }

        .cat-meta .meta-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 20px;
            padding: 4px 14px;
        }

        .cat-meta .meta-tag .dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            flex-shrink: 0;
        }

        /* Section */
        .section {
            padding: var(--section-space) 0;
        }

        .section-alt {
            background: #fff;
        }

        .section-header {
            margin-bottom: 32px;
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }

        .section-header h2 {
            font-family: var(--font-title);
            font-size: 30px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            line-height: 1.35;
        }

        .section-header .sub {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            line-height: 1.7;
        }

        /* Article List Cards */
        .article-list-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }

        .article-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
            position: relative;
        }

        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .article-card .thumb {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            flex-shrink: 0;
        }

        .article-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

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

        .article-card .cat-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(23, 17, 31, 0.78);
            color: #fff;
            font-size: 12px;
            font-weight: 500;
            padding: 4px 10px;
            border-radius: 20px;
            letter-spacing: 0.5px;
            backdrop-filter: blur(4px);
        }

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

        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 8px;
            transition: color 0.25s;
        }

        .article-card:hover h3 {
            color: var(--primary);
        }

        .article-card .excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .article-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 13px;
            color: #a09aac;
        }

        .article-card .read-more {
            color: var(--primary);
            font-weight: 500;
            font-size: 13px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .article-card .read-more:hover {
            color: var(--primary-dark);
        }

        /* Featured / Hot */
        .featured-strip {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }

        .featured-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .featured-card .thumb {
            aspect-ratio: 16/9;
            overflow: hidden;
            flex-shrink: 0;
        }

        .featured-card .thumb img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.35s ease;
        }

        .featured-card:hover .thumb img {
            transform: scale(1.03);
        }

        .featured-card .card-body {
            padding: 16px 18px 18px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .featured-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.5;
            margin-bottom: 6px;
        }

        .featured-card .excerpt {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .featured-card .hot-tag {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: #e8590c;
            margin-bottom: 8px;
        }

        /* Tag Cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            display: inline-flex;
            align-items: center;
            padding: 8px 18px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            background: #fff;
            border: 1px solid var(--border);
            transition: all 0.25s;
        }

        .tag-cloud a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }

        /* Subscribe */
        .subscribe-strip {
            background: var(--bg-dark);
            border-radius: var(--radius);
            padding: 36px 32px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 20px;
            flex-wrap: wrap;
        }

        .subscribe-strip h3 {
            font-family: var(--font-title);
            font-size: 24px;
            font-weight: 700;
            color: var(--text-inverse);
            line-height: 1.4;
            margin-bottom: 6px;
        }

        .subscribe-strip p {
            font-size: 15px;
            color: rgba(245, 243, 247, 0.75);
            line-height: 1.7;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            flex-shrink: 0;
            flex-wrap: wrap;
        }

        .subscribe-form input {
            width: 280px;
            max-width: 100%;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            background: rgba(255, 255, 255, 0.08);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 15px;
            transition: all 0.25s;
        }

        .subscribe-form input::placeholder {
            color: rgba(255, 255, 255, 0.5);
        }

        .subscribe-form input:focus {
            border-color: var(--accent);
            background: rgba(255, 255, 255, 0.12);
        }

        .subscribe-form button {
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--accent);
            color: #17111F;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            white-space: nowrap;
        }

        .subscribe-form button:hover {
            background: #3ee0cc;
        }

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

        .topic-card {
            position: relative;
            border-radius: var(--radius);
            overflow: hidden;
            aspect-ratio: 16/7;
            display: flex;
            align-items: flex-end;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

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

        .topic-card .overlay {
            position: absolute;
            inset: 0;
            background: linear-gradient(180deg, rgba(23, 17, 31, 0.1) 0%, rgba(23, 17, 31, 0.78) 100%);
        }

        .topic-card .content {
            position: relative;
            z-index: 2;
            padding: 18px 20px;
            width: 100%;
        }

        .topic-card .content .label {
            font-size: 12px;
            font-weight: 500;
            color: var(--accent);
            letter-spacing: 1px;
            margin-bottom: 4px;
        }

        .topic-card .content h3 {
            font-size: 18px;
            font-weight: 600;
            color: #fff;
            line-height: 1.4;
        }

        .topic-card .content p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
            margin-top: 4px;
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow);
            overflow: hidden;
            transition: all 0.3s ease;
        }

        .faq-item:hover {
            border-color: #d8d0e8;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            background: transparent;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            font-family: var(--font-body);
            line-height: 1.6;
            border: none;
        }

        .faq-question .icon {
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            transition: transform 0.3s ease, background 0.3s ease;
            font-size: 18px;
            color: var(--primary);
            font-weight: 400;
        }

        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .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: 200px;
            padding: 0 22px 18px;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(245, 243, 247, 0.8);
            padding: 48px 0 24px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.8fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }

        .footer-brand h3 {
            font-family: var(--font-title);
            font-size: 22px;
            font-weight: 700;
            color: #fff;
            letter-spacing: 0.5px;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(245, 243, 247, 0.65);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 243, 247, 0.65);
            margin-bottom: 10px;
            transition: color 0.25s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(245, 243, 247, 0.5);
        }

        .footer-bottom .sep {
            margin: 0 8px;
            color: rgba(255, 255, 255, 0.2);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .article-list-grid {
                grid-template-columns: 1fr;
            }
            .featured-strip {
                grid-template-columns: repeat(2, 1fr);
            }
            .topic-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
            .category-hero h1 {
                font-size: 36px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
            .section {
                padding: var(--mobile-section-space) 0;
            }
            .category-hero {
                padding: 36px 0 28px;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .featured-strip {
                grid-template-columns: 1fr;
            }
            .topic-grid {
                grid-template-columns: 1fr;
            }
            .topic-card {
                aspect-ratio: 16/6;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .subscribe-strip {
                flex-direction: column;
                align-items: flex-start;
                padding: 28px 20px;
            }
            .subscribe-form {
                width: 100%;
            }
            .subscribe-form input {
                flex: 1;
                width: auto;
            }
            .section-header h2 {
                font-size: 24px;
            }
            .breadcrumb-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .breadcrumb-list {
                overflow-x: auto;
                flex-wrap: nowrap;
                width: 100%;
                padding-bottom: 4px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --pad-x: 16px;
            }
            .category-hero h1 {
                font-size: 26px;
            }
            .section-header {
                flex-direction: column;
                align-items: flex-start;
                gap: 8px;
            }
            .article-card .card-body {
                padding: 14px 16px 16px;
            }
            .article-card h3 {
                font-size: 16px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                width: 100%;
            }
            .subscribe-form button {
                width: 100%;
            }
            .topic-card {
                aspect-ratio: 16/5;
            }
            .faq-question {
                font-size: 15px;
                padding: 16px 18px;
            }
            .faq-answer p {
                font-size: 14px;
            }
        }

/* roulang page: category1 */
:root {
  --primary: #6C3BF4;
  --primary-dark: #5B2ED6;
  --primary-light: #F4F1FA;
  --accent: #2DD4BF;
  --bg-warm: #FAFAF8;
  --bg-light: #F4F1FA;
  --bg-dark: #17111F;
  --text-main: #24212B;
  --text-secondary: #5D5866;
  --text-inverse: #F5F3F7;
  --border: #E8E4F0;
  --radius: 16px;
  --radius-sm: 12px;
  --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
  --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
  --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
  --font-num: "Inter", "Roboto Mono", monospace;
  --max-w: 1280px;
  --pad-x: 24px;
  --section-space: 96px;
  --mobile-section-space: 56px;
}
html {
  scroll-behavior: smooth;
  -webkit-tap-highlight-color: transparent;
}
body {
  font-family: var(--font-body);
  color: var(--text-main);
  background: var(--bg-warm);
  line-height: 1.85;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding-left: var(--pad-x);
  padding-right: var(--pad-x);
}
img {
  max-width: 100%;
  height: auto;
  display: block;
}
a {
  text-decoration: none;
  color: inherit;
  transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
}
button,
input {
  font-family: inherit;
  outline: none;
  border: none;
  transition: all 0.25s ease;
}
button:focus-visible,
input:focus-visible,
a:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 60;
  background: rgba(255, 255, 255, 0.96);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
}
.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 16px;
}
.logo-area {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}
.logo-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--primary), #9D66FF);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  flex-shrink: 0;
}
.logo-icon svg {
  width: 24px;
  height: 24px;
}
.logo-text {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: 0.5px;
  white-space: nowrap;
}
.logo-text span {
  color: var(--primary);
}
.nav-desktop {
  display: flex;
  align-items: center;
  gap: 4px;
}
.nav-link {
  padding: 8px 16px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 500;
  color: var(--text-secondary);
  white-space: nowrap;
  position: relative;
  transition: color 0.25s, background 0.25s;
}
.nav-link:hover {
  color: var(--primary);
  background: var(--primary-light);
}
.nav-link.active {
  color: var(--primary);
  background: var(--primary-light);
  font-weight: 600;
}
.nav-link.active::after {
  content: "";
  position: absolute;
  bottom: 4px;
  left: 16px;
  right: 16px;
  height: 2px;
  border-radius: 2px;
  background: var(--primary);
}
.search-icon-btn {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  flex-shrink: 0;
  transition: all 0.25s;
}
.search-icon-btn:hover {
  background: var(--primary-light);
  color: var(--primary);
}
.nav-toggle {
  display: none;
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--bg-light);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  flex-shrink: 0;
  border: none;
}
.nav-toggle span {
  width: 20px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: all 0.3s;
}
.nav-toggle.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav-toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}
.mobile-menu {
  display: none;
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px var(--pad-x) 20px;
  box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
}
.mobile-menu .nav-link {
  display: block;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  font-size: 16px;
}
.mobile-menu .nav-link:last-child {
  border-bottom: none;
}
.mobile-menu .nav-link.active {
  background: transparent;
  font-weight: 700;
}
.mobile-menu .nav-link.active::after {
  display: none;
}
@media (max-width: 1024px) {
  .nav-desktop {
    display: none;
  }
  .nav-toggle {
    display: flex;
  }
  .mobile-menu.open {
    display: block;
  }
}
/* Breadcrumb */
.breadcrumb-bar {
  background: #fff;
  border-bottom: 1px solid var(--border);
  padding: 12px 0;
}
.breadcrumb-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}
.breadcrumb-trail {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow-x: auto;
  scrollbar-width: none;
}
.breadcrumb-trail::-webkit-scrollbar {
  display: none;
}
.breadcrumb-trail a {
  color: var(--text-secondary);
  flex-shrink: 0;
}
.breadcrumb-trail a:hover {
  color: var(--primary);
}
.breadcrumb-trail .sep {
  color: #B8B2C4;
  flex-shrink: 0;
}
.breadcrumb-trail .current {
  color: var(--primary);
  font-weight: 600;
  flex-shrink: 0;
}
.back-link {
  font-size: 14px;
  color: var(--primary);
  font-weight: 500;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 6px 12px;
  border-radius: 8px;
  transition: background 0.25s;
}
.back-link:hover {
  background: var(--primary-light);
}
/* Section base */
.section {
  padding: var(--section-space) 0;
}
.section-alt {
  background: var(--bg-light);
}
.section-dark {
  background: var(--bg-dark);
}
/* Category header */
.category-head {
  background: linear-gradient(135deg, #17111F 0%, #2A1F3D 60%, #3D2560 100%);
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}
.category-head::before {
  content: "";
  position: absolute;
  top: -60px;
  right: -40px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(108,59,244,0.25) 0%, transparent 70%);
  pointer-events: none;
}
.category-head::after {
  content: "";
  position: absolute;
  bottom: -80px;
  left: -30px;
  width: 260px;
  height: 260px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(45,212,191,0.15) 0%, transparent 70%);
  pointer-events: none;
}
.category-head .container {
  position: relative;
  z-index: 1;
}
.category-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(255,255,255,0.12);
  color: #D4C9F0;
  font-size: 13px;
  padding: 6px 14px;
  border-radius: 20px;
  margin-bottom: 16px;
  letter-spacing: 0.5px;
}
.category-head h1 {
  font-family: var(--font-title);
  font-size: 44px;
  font-weight: 700;
  color: #fff;
  line-height: 1.3;
  margin: 0 0 16px;
}
.category-head .cat-desc {
  font-size: 16px;
  color: #C9C1D9;
  max-width: 620px;
  line-height: 1.8;
}
.category-stats {
  display: flex;
  gap: 32px;
  margin-top: 28px;
  flex-wrap: wrap;
}
.cat-stat {
  display: flex;
  align-items: center;
  gap: 10px;
}
.cat-stat-num {
  font-family: var(--font-num);
  font-size: 26px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1.2;
}
.cat-stat-label {
  font-size: 13px;
  color: #B5ACC9;
}
/* Article cards */
.article-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 24px;
}
.article-card-horizontal {
  grid-column: span 12;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: all 0.35s ease;
  box-shadow: var(--shadow);
}
.article-card-horizontal:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.article-card-horizontal .card-img {
  width: 100%;
  aspect-ratio: 21/9;
  overflow: hidden;
  position: relative;
}
.article-card-horizontal .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card-horizontal:hover .card-img img {
  transform: scale(1.03);
}
.article-card-horizontal .card-body {
  padding: 20px 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card-horizontal .card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.article-card-horizontal .card-title {
  font-size: 20px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin: 0 0 8px;
  transition: color 0.25s;
}
.article-card-horizontal:hover .card-title {
  color: var(--primary);
}
.article-card-horizontal .card-excerpt {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 12px;
}
.article-card-horizontal .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: auto;
}
.article-card-horizontal .card-date {
  font-size: 13px;
  color: #8F88A0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.article-card-horizontal .read-more {
  font-size: 13px;
  color: var(--primary);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 4px;
  flex-shrink: 0;
}
.article-card-horizontal .read-more:hover {
  color: var(--primary-dark);
}
.article-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all 0.35s ease;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
}
.article-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}
.article-card .card-img {
  aspect-ratio: 16/9;
  overflow: hidden;
  position: relative;
}
.article-card .card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}
.article-card:hover .card-img img {
  transform: scale(1.04);
}
.article-card .card-body {
  padding: 18px 20px;
  flex: 1;
  display: flex;
  flex-direction: column;
}
.article-card .card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.article-card .card-title {
  font-size: 17px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  margin: 0 0 8px;
  transition: color 0.25s;
}
.article-card:hover .card-title {
  color: var(--primary);
}
.article-card .card-excerpt {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 12px;
}
.article-card .card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: auto;
}
.article-card .card-date {
  font-size: 12px;
  color: #8F88A0;
}
.article-card .read-more {
  font-size: 12px;
  color: var(--primary);
  font-weight: 500;
  flex-shrink: 0;
}
.article-card .read-more:hover {
  color: var(--primary-dark);
}
.tag-chip {
  display: inline-flex;
  align-items: center;
  padding: 3px 10px;
  border-radius: 20px;
  background: var(--primary-light);
  color: var(--primary);
  font-size: 12px;
  font-weight: 500;
}
.tag-chip.accent {
  background: rgba(45,212,191,0.15);
  color: #0FA08E;
}
.tag-chip.dark {
  background: #F0EBF8;
  color: var(--text-secondary);
}
/* Layout for articles + sidebar */
.articles-main {
  grid-column: span 12;
}
.articles-sidebar {
  grid-column: span 12;
}
@media (min-width: 1024px) {
  .articles-main {
    grid-column: span 8;
  }
  .articles-sidebar {
    grid-column: span 4;
  }
  .article-card-horizontal .card-img {
    aspect-ratio: auto;
    width: 45%;
    min-height: 220px;
  }
  .article-card-horizontal {
    flex-direction: row;
  }
}
@media (max-width: 1023px) {
  .article-card-horizontal .card-img {
    aspect-ratio: 21/9;
  }
}
/* Hot articles sidebar */
.hot-card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  box-shadow: var(--shadow);
}
.hot-card h2 {
  font-size: 20px;
  font-weight: 700;
  color: var(--text-main);
  margin: 0 0 18px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--primary-light);
  display: flex;
  align-items: center;
  gap: 8px;
}
.hot-card h2::before {
  content: "";
  width: 4px;
  height: 20px;
  border-radius: 2px;
  background: var(--primary);
}
.hot-list-item {
  display: flex;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--border);
  align-items: flex-start;
}
.hot-list-item:last-child {
  border-bottom: none;
  padding-bottom: 0;
}
.hot-list-item img {
  width: 72px;
  height: 56px;
  border-radius: 10px;
  object-fit: cover;
  flex-shrink: 0;
}
.hot-list-item .hot-info {
  flex: 1;
  min-width: 0;
}
.hot-list-item .hot-title {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.5;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin: 0 0 6px;
  transition: color 0.25s;
}
.hot-list-item:hover .hot-title {
  color: var(--primary);
}
.hot-list-item .hot-date {
  font-size: 12px;
  color: #8F88A0;
}
.hot-list-item .hot-num {
  font-family: var(--font-num);
  font-size: 22px;
  font-weight: 700;
  color: #E0D8F0;
  line-height: 1;
  flex-shrink: 0;
}
/* Tag cloud */
.tag-cloud {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}
.tag-cloud-link {
  display: inline-flex;
  align-items: center;
  padding: 8px 18px;
  border-radius: 24px;
  background: #fff;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 14px;
  transition: all 0.3s ease;
}
.tag-cloud-link:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}
/* Subscribe CTA */
.subscribe-bar {
  background: linear-gradient(135deg, var(--primary) 0%, #8B5CF6 50%, #A78BFA 100%);
  border-radius: var(--radius);
  padding: 40px 36px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
  box-shadow: 0 12px 32px rgba(108,59,244,0.25);
}
.subscribe-bar h3 {
  color: #fff;
  font-size: 22px;
  font-weight: 700;
  margin: 0 0 6px;
}
.subscribe-bar p {
  color: #E3D9F8;
  font-size: 14px;
  margin: 0;
}
.subscribe-form {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 280px;
}
.subscribe-form input {
  flex: 1;
  min-width: 200px;
  padding: 12px 18px;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.16);
  border: 1px solid rgba(255,255,255,0.28);
  color: #fff;
  font-size: 14px;
  transition: all 0.3s;
}
.subscribe-form input::placeholder {
  color: #C9B8E9;
}
.subscribe-form input:focus {
  background: rgba(255,255,255,0.22);
  border-color: rgba(255,255,255,0.5);
  outline: 2px solid rgba(255,255,255,0.3);
  outline-offset: 2px;
}
.subscribe-form button {
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  background: #fff;
  color: var(--primary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all 0.3s;
}
.subscribe-form button:hover {
  background: var(--bg-light);
  transform: translateY(-2px);
}
/* FAQ */
.faq-wrap {
  max-width: 820px;
  margin: 0 auto;
}
.faq-item {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  margin-bottom: 14px;
  overflow: hidden;
  transition: all 0.3s;
}
.faq-item:hover {
  border-color: var(--primary);
}
.faq-item summary {
  padding: 18px 22px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text-main);
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  user-select: none;
}
.faq-item summary::-webkit-details-marker {
  display: none;
}
.faq-item summary .faq-icon {
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary-light);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform 0.3s;
}
.faq-item summary .faq-icon svg {
  width: 14px;
  height: 14px;
  color: var(--primary);
  transition: transform 0.3s;
}
.faq-item[open] summary .faq-icon {
  background: var(--primary);
}
.faq-item[open] summary .faq-icon svg {
  color: #fff;
  transform: rotate(45deg);
}
.faq-answer {
  padding: 0 22px 18px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.8;
  border-top: 1px dashed var(--border);
  padding-top: 14px;
  margin: 0 22px;
  padding-left: 0;
  padding-right: 0;
}
/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-sm);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  border: none;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(108,59,244,0.3);
}
.btn-secondary {
  background: transparent;
  color: var(--primary);
  border: 1px solid var(--primary);
}
.btn-secondary:hover {
  background: var(--primary-light);
}
.btn-white {
  background: #fff;
  color: var(--primary);
}
.btn-white:hover {
  background: var(--bg-light);
  transform: translateY(-2px);
}
/* Section title */
.sec-title {
  font-family: var(--font-title);
  font-size: 28px;
  font-weight: 700;
  color: var(--text-main);
  line-height: 1.4;
  margin: 0 0 12px;
}
.sec-sub {
  font-size: 15px;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0 0 32px;
  max-width: 640px;
}
/* Footer */
.site-footer {
  background: var(--bg-dark);
  color: #B5ACC9;
  padding: 56px 0 32px;
  font-size: 14px;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 32px;
  margin-bottom: 32px;
}
.footer-brand {
  grid-column: span 12;
}
.footer-col {
  grid-column: span 6;
}
@media (min-width: 768px) {
  .footer-brand {
    grid-column: span 4;
  }
  .footer-col {
    grid-column: span 2;
  }
}
@media (max-width: 767px) {
  .footer-brand,
  .footer-col {
    grid-column: span 6;
  }
}
.footer-brand h3 {
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  margin: 0 0 10px;
}
.footer-brand p {
  font-size: 14px;
  line-height: 1.8;
  margin: 0;
}
.footer-col h4 {
  font-size: 15px;
  font-weight: 600;
  color: #fff;
  margin: 0 0 12px;
}
.footer-col a {
  display: block;
  color: #B5ACC9;
  padding: 4px 0;
  font-size: 14px;
  transition: color 0.25s;
}
.footer-col a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 20px;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 12px;
  font-size: 13px;
  color: #8F88A0;
}
.footer-bottom .sep {
  margin: 0 8px;
  color: #5D5866;
}
/* Responsive */
@media (max-width: 768px) {
  .section {
    padding: var(--mobile-section-space) 0;
  }
  .category-head {
    padding: 48px 0 40px;
  }
  .category-head h1 {
    font-size: 32px;
  }
  .category-stats {
    gap: 20px;
  }
  .cat-stat-num {
    font-size: 22px;
  }
  .article-grid {
    gap: 16px;
  }
  .article-card-horizontal .card-body {
    padding: 16px 18px;
  }
  .article-card-horizontal .card-title {
    font-size: 17px;
  }
  .subscribe-bar {
    padding: 28px 22px;
    flex-direction: column;
    text-align: center;
  }
  .subscribe-form {
    width: 100%;
    min-width: auto;
  }
  .subscribe-form input,
  .subscribe-form button {
    width: 100%;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
  .hot-list-item img {
    width: 60px;
    height: 48px;
  }
}
@media (max-width: 520px) {
  :root {
    --pad-x: 16px;
  }
  .category-head h1 {
    font-size: 28px;
  }
  .article-card-horizontal .card-meta {
    gap: 8px;
  }
  .breadcrumb-trail {
    font-size: 12px;
  }
  .back-link {
    font-size: 12px;
  }
}

/* roulang page: category3 */
:root {
            --primary: #6C3BF4;
            --primary-dark: #5B2ED6;
            --primary-light: #F4F1FA;
            --accent: #2DD4BF;
            --bg-warm: #FAFAF8;
            --bg-light: #F4F1FA;
            --bg-dark: #17111F;
            --text-main: #24212B;
            --text-secondary: #5D5866;
            --text-inverse: #F5F3F7;
            --border: #E8E4F0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto Mono", monospace;
            --max-w: 1280px;
            --pad-x: 24px;
            --section-space: 88px;
            --mobile-section-space: 56px;
        }
        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }
        body {
            font-family: var(--font-body);
            color: var(--text-main);
            background: var(--bg-warm);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }
        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: var(--pad-x);
            padding-right: var(--pad-x);
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
        }
        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all 0.25s ease;
        }
        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }
        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #9D66FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }
        .logo-icon svg {
            width: 24px;
            height: 24px;
        }
        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: 4px;
        }
        .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }
        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }
        .search-icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all 0.25s;
            border: none;
        }
        .search-icon-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
            border: none;
        }
        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s;
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px var(--pad-x) 20px;
            box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
        }
        .mobile-menu .nav-link {
            display: block;
            padding: 12px 16px;
            margin-bottom: 4px;
        }
        /* Breadcrumb */
        .breadcrumb-bar {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }
        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: nowrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            overflow-x: auto;
            white-space: nowrap;
            -webkit-overflow-scrolling: touch;
        }
        .breadcrumb a {
            color: var(--text-secondary);
            flex-shrink: 0;
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: #C9C4D1;
            flex-shrink: 0;
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
            flex-shrink: 0;
        }
        .back-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            flex-shrink: 0;
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .back-link:hover {
            color: var(--primary-dark);
        }
        /* Sections */
        .section {
            padding: var(--section-space) 0;
        }
        .section-alt {
            background: var(--bg-light);
        }
        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
            letter-spacing: 0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.8;
            max-width: 680px;
        }
        /* Category Header */
        .category-header {
            background: var(--bg-dark);
            padding: 64px 0 56px;
            position: relative;
            overflow: hidden;
        }
        .category-header::after {
            content: "";
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 59, 244, 0.3), transparent 70%);
            pointer-events: none;
        }
        .category-header .container {
            position: relative;
            z-index: 1;
        }
        .category-h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--text-inverse);
            margin-bottom: 12px;
            line-height: 1.3;
            letter-spacing: 0.5px;
        }
        .category-desc {
            font-size: 17px;
            color: rgba(245, 243, 247, 0.82);
            max-width: 720px;
            line-height: 1.8;
        }
        /* Feature Topics */
        .feature-grid {
            display: grid;
            grid-template-columns: 1.2fr 0.8fr;
            gap: 24px;
        }
        .feature-grid .feature-main {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }
        .feature-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .feature-card .feature-img {
            width: 100%;
            height: 200px;
            object-fit: cover;
        }
        .feature-card .feature-body {
            padding: 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .feature-card .feature-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .feature-card h3 {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .feature-card p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
            flex: 1;
        }
        .feature-main .feature-card {
            flex-direction: row;
        }
        .feature-main .feature-card .feature-img {
            width: 260px;
            height: auto;
            min-height: 200px;
            flex-shrink: 0;
        }
        .feature-main .feature-card .feature-body {
            padding: 24px 28px;
        }
        /* Article Grid */
        .article-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .article-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            display: flex;
            flex-direction: column;
        }
        .article-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .article-card .article-img {
            width: 100%;
            height: 180px;
            object-fit: cover;
        }
        .article-card .article-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .article-card .article-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 10px;
        }
        .article-card .article-tag {
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 2px 10px;
            border-radius: 14px;
        }
        .article-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .article-card h3 a:hover {
            color: var(--primary);
        }
        .article-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-card .article-date {
            font-size: 12px;
            color: #9B96A3;
            margin-top: 12px;
        }
        /* Hot Articles */
        .hot-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 20px;
        }
        .hot-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 20px;
            display: flex;
            gap: 16px;
            align-items: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }
        .hot-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .hot-item img {
            width: 100px;
            height: 72px;
            object-fit: cover;
            border-radius: 10px;
            flex-shrink: 0;
        }
        .hot-item .hot-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.5;
        }
        .hot-item .hot-content h4 a:hover {
            color: var(--primary);
        }
        .hot-item .hot-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* Learning Path */
        .path-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .path-step {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            position: relative;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }
        .path-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .path-step .step-num {
            font-family: var(--font-num);
            font-size: 42px;
            font-weight: 700;
            color: var(--primary-light);
            line-height: 1;
            margin-bottom: 12px;
        }
        .path-step h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .path-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .path-arrow {
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-size: 24px;
            font-weight: 300;
        }
        /* Tags */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }
        .tag-pill {
            display: inline-block;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 24px;
            padding: 8px 20px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            transition: all 0.25s ease;
        }
        .tag-pill:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }
        /* CTA */
        .cta-banner {
            background: var(--bg-dark);
            border-radius: var(--radius);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
            position: relative;
            overflow: hidden;
        }
        .cta-banner::before {
            content: "";
            position: absolute;
            top: -60%;
            left: -10%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: radial-gradient(circle, rgba(108, 59, 244, 0.4), transparent 70%);
            pointer-events: none;
        }
        .cta-banner .cta-text {
            position: relative;
            z-index: 1;
            flex: 1;
            min-width: 260px;
        }
        .cta-banner .cta-text h3 {
            font-size: 24px;
            font-weight: 700;
            color: var(--text-inverse);
            margin-bottom: 8px;
        }
        .cta-banner .cta-text p {
            font-size: 15px;
            color: rgba(245, 243, 247, 0.78);
            line-height: 1.7;
        }
        .cta-banner .cta-actions {
            position: relative;
            z-index: 1;
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(108, 59, 244, 0.3);
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            gap: 8px;
        }
        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 59, 244, 0.4);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: var(--radius-sm);
            padding: 11px 26px;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-secondary:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: var(--accent);
            color: var(--bg-dark);
            border-radius: var(--radius-sm);
            padding: 12px 28px;
            font-size: 15px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        .btn-accent:hover {
            background: #24C4AF;
            transform: translateY(-2px);
        }
        /* Related Topics */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 28px 24px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: var(--shadow);
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
            border-color: var(--primary);
        }
        .related-card .related-icon {
            width: 52px;
            height: 52px;
            border-radius: 14px;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            color: var(--primary);
        }
        .related-card .related-icon svg {
            width: 26px;
            height: 26px;
        }
        .related-card h4 {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 6px;
        }
        .related-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            transition: all 0.25s ease;
            box-shadow: var(--shadow);
        }
        .faq-item:hover {
            border-color: var(--primary);
        }
        .faq-question {
            width: 100%;
            background: none;
            padding: 18px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            border: none;
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            transition: transform 0.3s ease;
            font-size: 20px;
            font-weight: 300;
        }
        .faq-item.open .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s 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: 1.8;
        }
        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: var(--text-inverse);
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(245, 243, 247, 0.65);
            line-height: 1.7;
            max-width: 260px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: #fff;
        }
        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 243, 247, 0.65);
            padding: 5px 0;
            transition: color 0.25s;
        }
        .footer-col a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(245, 243, 247, 0.12);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(245, 243, 247, 0.55);
        }
        .footer-bottom .sep {
            margin: 0 8px;
            color: rgba(245, 243, 247, 0.3);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .article-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: 1fr;
            }
            .feature-main .feature-card {
                flex-direction: column;
            }
            .feature-main .feature-card .feature-img {
                width: 100%;
                height: 200px;
            }
            .hot-list {
                grid-template-columns: 1fr;
            }
            .path-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .path-arrow {
                display: none;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu {
                display: none;
            }
            .mobile-menu.open {
                display: block;
            }
            .article-grid {
                grid-template-columns: 1fr;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .category-h1 {
                font-size: 32px;
            }
            .cta-banner {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-banner .cta-actions {
                justify-content: center;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .section {
                padding: var(--mobile-section-space) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .breadcrumb-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .hot-item {
                flex-direction: column;
                text-align: center;
            }
            .hot-item img {
                width: 100%;
                height: 140px;
                object-fit: cover;
            }
            .btn-primary,
            .btn-secondary,
            .btn-accent {
                width: 100%;
                justify-content: center;
            }
            .cta-banner .cta-actions {
                flex-direction: column;
                width: 100%;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #6C3BF4;
            --primary-dark: #5B2ED6;
            --primary-light: #F4F1FA;
            --accent: #2DD4BF;
            --bg-warm: #FAFAF8;
            --bg-light: #F4F1FA;
            --bg-dark: #17111F;
            --text-main: #24212B;
            --text-secondary: #5D5866;
            --text-inverse: #F5F3F7;
            --border: #E8E4F0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto Mono", monospace;
            --max-w: 1280px;
            --pad-x: 24px;
            --section-space: 96px;
            --mobile-section-space: 56px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-body);
            color: var(--text-main);
            background: var(--bg-warm);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: var(--pad-x);
            padding-right: var(--pad-x);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all 0.25s ease;
        }

        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #9D66FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 24px;
            height: 24px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .search-icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all 0.25s;
        }

        .search-icon-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
            border: none;
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s;
        }

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

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

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px var(--pad-x) 20px;
            box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 10px 16px;
            margin-bottom: 4px;
        }

        .breadcrumb-bar {
            background: var(--bg-light);
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 8px;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow-x: auto;
        }

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

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

        .breadcrumb .sep {
            color: #B8B0C4;
            flex-shrink: 0;
        }

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .back-link {
            font-size: 14px;
            color: var(--text-secondary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            white-space: nowrap;
            flex-shrink: 0;
        }

        .back-link:hover {
            color: var(--primary);
        }

        .back-link svg {
            width: 16px;
            height: 16px;
        }

        .page-title-section {
            padding: 48px 0 32px;
            background: var(--bg-warm);
        }

        .page-title-section .badge {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 14px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 999px;
            margin-bottom: 12px;
        }

        .page-title-section h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            margin-bottom: 12px;
            color: var(--text-main);
        }

        .page-title-section .subtitle {
            font-size: 18px;
            color: var(--text-secondary);
            max-width: 720px;
            line-height: 1.7;
        }

        .review-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .review-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .review-card .card-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
        }

        .review-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .review-card:hover .card-img img {
            transform: scale(1.03);
        }

        .review-card .card-body {
            padding: 18px 20px 20px;
        }

        .review-card .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 8px;
        }

        .card-tag {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
            padding: 2px 10px;
            border-radius: 999px;
        }

        .review-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.45;
            margin-bottom: 6px;
            color: var(--text-main);
        }

        .review-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .featured-review {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
            display: flex;
            flex-direction: column;
        }

        .featured-review:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .featured-review .featured-img {
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--bg-light);
        }

        .featured-review .featured-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.4s ease;
        }

        .featured-review:hover .featured-img img {
            transform: scale(1.03);
        }

        .featured-review .featured-body {
            padding: 22px 24px 24px;
        }

        .featured-review h3 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: 8px;
        }

        .featured-review p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .hot-item {
            display: flex;
            gap: 14px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 14px 16px;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .hot-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateX(4px);
        }

        .hot-item .hot-img {
            width: 96px;
            height: 64px;
            border-radius: 8px;
            overflow: hidden;
            flex-shrink: 0;
            background: var(--bg-light);
        }

        .hot-item .hot-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .hot-item .hot-info h4 {
            font-size: 15px;
            font-weight: 600;
            line-height: 1.4;
            margin-bottom: 4px;
        }

        .hot-item .hot-info p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        .hot-rank {
            font-family: var(--font-num);
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1;
            flex-shrink: 0;
            min-width: 32px;
        }

        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-cloud a {
            display: inline-block;
            padding: 6px 16px;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 999px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all 0.25s;
        }

        .tag-cloud a:hover {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        .subscribe-box {
            background: linear-gradient(135deg, var(--bg-dark) 0%, #2D1B4E 100%);
            border-radius: var(--radius);
            padding: 36px 32px;
            display: flex;
            flex-direction: column;
            gap: 16px;
            align-items: center;
            text-align: center;
        }

        .subscribe-box h2 {
            color: var(--text-inverse);
            font-size: 28px;
            font-weight: 700;
        }

        .subscribe-box p {
            color: rgba(245, 243, 247, 0.75);
            font-size: 16px;
            max-width: 560px;
        }

        .subscribe-form {
            display: flex;
            gap: 10px;
            width: 100%;
            max-width: 480px;
            flex-wrap: wrap;
            justify-content: center;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 200px;
            padding: 12px 18px;
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.1);
            border: 1px solid rgba(255, 255, 255, 0.2);
            color: #fff;
            font-size: 15px;
        }

        .subscribe-form input::placeholder {
            color: rgba(245, 243, 247, 0.55);
        }

        .subscribe-form input:focus {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
            background: rgba(255, 255, 255, 0.15);
        }

        .btn-primary {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: var(--primary);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 12px;
            cursor: pointer;
            transition: all 0.3s;
            border: none;
        }

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            background: transparent;
            color: var(--primary);
            font-size: 16px;
            font-weight: 500;
            padding: 11px 23px;
            border-radius: 12px;
            border: 1px solid var(--primary);
            cursor: pointer;
            transition: all 0.3s;
        }

        .btn-outline:hover {
            background: var(--primary-light);
        }

        .topic-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 24px;
            box-shadow: var(--shadow);
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-4px);
        }

        .topic-card h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 6px;
        }

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

        .topic-card .topic-icon {
            width: 44px;
            height: 44px;
            border-radius: 12px;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 12px;
        }

        .topic-card .topic-icon svg {
            width: 24px;
            height: 24px;
        }

        .faq-item {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            overflow: hidden;
        }

        .faq-question {
            padding: 18px 20px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            user-select: none;
            transition: background 0.25s;
        }

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

        .faq-question .faq-icon {
            width: 24px;
            height: 24px;
            flex-shrink: 0;
            transition: transform 0.3s;
            color: var(--primary);
        }

        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }

        .faq-answer {
            display: none;
            padding: 0 20px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

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

        .site-footer {
            background: var(--bg-dark);
            color: var(--text-inverse);
            padding: 56px 0 32px;
            margin-top: 56px;
        }

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

        .footer-brand h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
        }

        .footer-brand p {
            color: rgba(245, 243, 247, 0.7);
            font-size: 15px;
            line-height: 1.7;
            max-width: 380px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #fff;
        }

        .footer-col a {
            display: block;
            color: rgba(245, 243, 247, 0.7);
            font-size: 14px;
            padding: 4px 0;
            transition: color 0.25s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            justify-content: space-between;
            font-size: 13px;
            color: rgba(245, 243, 247, 0.55);
        }

        .footer-bottom .sep {
            margin: 0 6px;
        }

        @media (max-width: 1024px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.show {
                display: block;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 24px;
            }
            .page-title-section h1 {
                font-size: 34px;
            }
            .featured-review .featured-body {
                padding: 18px 20px 20px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --pad-x: 16px;
                --section-space: 64px;
            }
            .header-inner {
                height: 60px;
            }
            .logo-text {
                font-size: 18px;
            }
            .page-title-section {
                padding: 32px 0 24px;
            }
            .page-title-section h1 {
                font-size: 28px;
            }
            .page-title-section .subtitle {
                font-size: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .subscribe-box {
                padding: 24px 18px;
            }
            .subscribe-box h2 {
                font-size: 22px;
            }
            .hot-item .hot-img {
                width: 72px;
                height: 52px;
            }
            .hot-rank {
                font-size: 20px;
                min-width: 26px;
            }
            .breadcrumb-inner {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
        }

        @media (min-width: 769px) {
            .featured-review {
                flex-direction: row;
            }
            .featured-review .featured-img {
                width: 45%;
                aspect-ratio: auto;
                min-height: 240px;
            }
            .featured-review .featured-body {
                flex: 1;
                display: flex;
                flex-direction: column;
                justify-content: center;
                padding: 24px 28px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #6C3BF4;
            --primary-dark: #5B2ED6;
            --primary-light: #F4F1FA;
            --accent: #2DD4BF;
            --bg-warm: #FAFAF8;
            --bg-light: #F4F1FA;
            --bg-dark: #17111F;
            --text-main: #24212B;
            --text-secondary: #5D5866;
            --text-inverse: #F5F3F7;
            --border: #E8E4F0;
            --radius: 16px;
            --radius-sm: 12px;
            --shadow: 0 2px 12px rgba(28, 18, 48, 0.06);
            --shadow-hover: 0 8px 24px rgba(108, 59, 244, 0.12);
            --font-title: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-body: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --font-num: "Inter", "Roboto Mono", monospace;
            --max-w: 1280px;
            --pad-x: 24px;
            --section-space: 96px;
            --mobile-section-space: 56px;
        }

        html {
            scroll-behavior: smooth;
            -webkit-tap-highlight-color: transparent;
        }

        body {
            font-family: var(--font-body);
            color: var(--text-main);
            background: var(--bg-warm);
            line-height: 1.85;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
            overflow-x: hidden;
        }

        .container {
            max-width: var(--max-w);
            margin: 0 auto;
            padding-left: var(--pad-x);
            padding-right: var(--pad-x);
        }

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

        a {
            text-decoration: none;
            color: inherit;
            transition: color 0.25s ease, background-color 0.25s ease, opacity 0.25s ease;
        }

        button,
        input {
            font-family: inherit;
            outline: none;
            border: none;
            transition: all 0.25s ease;
        }

        button:focus-visible,
        input:focus-visible,
        a:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 60;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            box-shadow: 0 1px 6px rgba(28, 18, 48, 0.04);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: 16px;
        }

        .logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }

        .logo-icon {
            width: 42px;
            height: 42px;
            border-radius: 12px;
            background: linear-gradient(135deg, var(--primary), #9D66FF);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            flex-shrink: 0;
        }

        .logo-icon svg {
            width: 24px;
            height: 24px;
        }

        .logo-text {
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
        }

        .logo-text span {
            color: var(--primary);
        }

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

        .nav-link {
            padding: 8px 16px;
            border-radius: 10px;
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
            position: relative;
            transition: color 0.25s, background 0.25s;
        }

        .nav-link:hover {
            color: var(--primary);
            background: var(--primary-light);
        }

        .nav-link.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }

        .nav-link.active::after {
            content: "";
            position: absolute;
            bottom: 4px;
            left: 16px;
            right: 16px;
            height: 2px;
            border-radius: 2px;
            background: var(--primary);
        }

        .search-icon-btn {
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--text-secondary);
            cursor: pointer;
            flex-shrink: 0;
            transition: all 0.25s;
        }

        .search-icon-btn:hover {
            background: var(--primary-light);
            color: var(--primary);
        }

        .nav-toggle {
            display: none;
            width: 42px;
            height: 42px;
            border-radius: 10px;
            background: var(--bg-light);
            align-items: center;
            justify-content: center;
            flex-direction: column;
            gap: 5px;
            cursor: pointer;
            flex-shrink: 0;
            border: none;
        }

        .nav-toggle span {
            width: 20px;
            height: 2px;
            background: var(--text-main);
            border-radius: 2px;
            transition: all 0.3s;
        }

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

        .mobile-menu {
            display: none;
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px var(--pad-x) 20px;
            box-shadow: 0 8px 20px rgba(28, 18, 48, 0.08);
        }

        .mobile-menu .nav-link {
            display: block;
            padding: 10px 12px;
            margin-bottom: 2px;
        }

        /* Breadcrumb */
        .breadcrumb-bar {
            background: #fff;
            border-bottom: 1px solid var(--border);
            padding: 12px 0;
        }

        .breadcrumb-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            flex-wrap: wrap;
        }

        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-secondary);
            white-space: nowrap;
            overflow-x: auto;
            scrollbar-width: thin;
        }

        .breadcrumb a {
            color: var(--text-secondary);
            transition: color 0.25s;
        }

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

        .breadcrumb .current {
            color: var(--primary);
            font-weight: 600;
        }

        .breadcrumb .sep {
            color: #C9C4D4;
            font-size: 12px;
        }

        .back-link {
            font-size: 14px;
            color: var(--primary);
            font-weight: 500;
            white-space: nowrap;
            flex-shrink: 0;
            padding: 4px 0;
        }

        .back-link:hover {
            text-decoration: underline;
        }

        /* Section base */
        .section {
            padding: var(--section-space) 0;
        }

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

        .section-title {
            font-size: 28px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.35;
            margin-bottom: 12px;
        }

        .section-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 640px;
            line-height: 1.8;
        }

        .section-head {
            margin-bottom: 36px;
        }

        /* Category hero (not homepage hero) */
        .cat-hero {
            background: linear-gradient(160deg, #17111F 0%, #1E1428 60%, #251A35 100%);
            padding: 56px 0 64px;
            position: relative;
            overflow: hidden;
        }

        .cat-hero::before {
            content: "";
            position: absolute;
            top: -40%;
            right: -20%;
            width: 70%;
            height: 180%;
            background: radial-gradient(ellipse, rgba(108, 59, 244, 0.28), transparent 65%);
            pointer-events: none;
        }

        .cat-hero::after {
            content: "";
            position: absolute;
            bottom: -30%;
            left: -15%;
            width: 60%;
            height: 160%;
            background: radial-gradient(ellipse, rgba(45, 212, 191, 0.2), transparent 60%);
            pointer-events: none;
        }

        .cat-hero-inner {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: 1.4fr 1fr;
            gap: 48px;
            align-items: center;
        }

        .cat-hero h1 {
            font-size: 42px;
            font-weight: 700;
            color: var(--text-inverse);
            line-height: 1.25;
            margin-bottom: 16px;
            letter-spacing: -0.5px;
        }

        .cat-hero .cat-desc {
            font-size: 17px;
            color: rgba(245, 243, 247, 0.82);
            line-height: 1.85;
            max-width: 560px;
        }

        .cat-hero-stats {
            display: flex;
            gap: 32px;
            margin-top: 28px;
            flex-wrap: wrap;
        }

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

        .cat-stat-num {
            font-family: var(--font-num);
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            line-height: 1.2;
        }

        .cat-stat-label {
            font-size: 13px;
            color: rgba(245, 243, 247, 0.6);
            margin-top: 4px;
        }

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

        .cat-hero-visual img {
            border-radius: var(--radius);
            box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
            width: 100%;
            max-width: 420px;
            aspect-ratio: 4/3;
            object-fit: cover;
        }

        /* Card styles */
        .card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
            overflow: hidden;
        }

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

        .card-body {
            padding: 20px 22px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.45;
            margin-bottom: 8px;
        }

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

        .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 14px;
        }

        .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: #8A8496;
        }

        .card-tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 20px;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 12px;
            font-weight: 500;
        }

        /* Topic list card (horizontal) */
        .topic-card {
            display: flex;
            gap: 16px;
            align-items: center;
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 16px;
            box-shadow: var(--shadow);
            transition: all 0.3s ease;
        }

        .topic-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }

        .topic-card img {
            width: 120px;
            height: 80px;
            border-radius: 10px;
            object-fit: cover;
            flex-shrink: 0;
        }

        .topic-card-content {
            flex: 1;
            min-width: 0;
        }

        .topic-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
            margin-bottom: 6px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .topic-card-title a:hover {
            color: var(--primary);
        }

        .topic-card-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: 8px;
        }

        .topic-card-meta {
            font-size: 12px;
            color: #8A8496;
            display: flex;
            gap: 12px;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
        }

        .tag-pill {
            padding: 8px 18px;
            border-radius: 24px;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            font-size: 14px;
            transition: all 0.25s ease;
        }

        .tag-pill:hover {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }

        /* Button */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 16px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: all 0.25s ease;
            border: none;
        }

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

        .btn-primary:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(108, 59, 244, 0.25);
        }

        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }

        .btn-outline:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        .btn-white {
            background: #fff;
            color: var(--primary);
        }

        .btn-white:hover {
            background: #F0EBFF;
            transform: translateY(-2px);
        }

        /* Form */
        .subscribe-form {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
            max-width: 520px;
        }

        .subscribe-form input {
            flex: 1;
            min-width: 240px;
            padding: 12px 18px;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            background: #fff;
            font-size: 15px;
            color: var(--text-main);
            transition: all 0.25s;
        }

        .subscribe-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(108, 59, 244, 0.1);
        }

        .subscribe-form button {
            padding: 12px 24px;
            border-radius: var(--radius-sm);
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            cursor: pointer;
        }

        .subscribe-form button:hover {
            background: var(--primary-dark);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-item {
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            background: #fff;
            margin-bottom: 12px;
            overflow: hidden;
            transition: all 0.25s;
        }

        .faq-item:hover {
            border-color: #D8D0E8;
        }

        .faq-question {
            width: 100%;
            text-align: left;
            padding: 18px 22px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: none;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            border: none;
        }

        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 400;
            transition: all 0.3s;
        }

        .faq-item.open .faq-icon {
            transform: rotate(45deg);
            background: var(--primary);
            color: #fff;
        }

        .faq-answer {
            display: none;
            padding: 0 22px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

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

        /* Footer */
        .site-footer {
            background: var(--bg-dark);
            color: rgba(245, 243, 247, 0.85);
            padding: 48px 0 28px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 36px;
        }

        .footer-brand h3 {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.75;
            color: rgba(245, 243, 247, 0.65);
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
        }

        .footer-col a {
            display: block;
            font-size: 14px;
            color: rgba(245, 243, 247, 0.65);
            margin-bottom: 8px;
            transition: color 0.25s;
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(245, 243, 247, 0.12);
            padding-top: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(245, 243, 247, 0.5);
        }

        .footer-bottom .sep {
            margin: 0 8px;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .cat-hero-inner {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .cat-hero-visual img {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .mobile-menu.show {
                display: block;
            }
            .section {
                padding: var(--mobile-section-space) 0;
            }
            .section-title {
                font-size: 24px;
            }
            .cat-hero {
                padding: 36px 0 44px;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
            .topic-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .topic-card img {
                width: 100%;
                height: auto;
                aspect-ratio: 16/9;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .breadcrumb-inner {
                flex-direction: column;
                align-items: flex-start;
            }
        }

        @media (max-width: 520px) {
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-stat-num {
                font-size: 24px;
            }
            .subscribe-form {
                flex-direction: column;
            }
            .subscribe-form input {
                min-width: 100%;
            }
            .subscribe-form button {
                width: 100%;
            }
            .card-body {
                padding: 16px;
            }
            .topic-card {
                padding: 12px;
            }
        }