/* roulang page: index */
:root {
            --primary: #E07B2D;
            --primary-dark: #C9681F;
            --primary-light: #F5A96A;
            --secondary: #1F3A32;
            --secondary-light: #2E5A4D;
            --bg: #F6F3EE;
            --bg-alt: #FBFAF7;
            --card: #FFFFFF;
            --text: #2B2B2B;
            --text-muted: #6B6B6B;
            --border: #E5DFD6;
            --success: #3D7A4E;
            --warning: #E8A843;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-sm: 0 1px 3px rgba(31,58,50,0.06);
            --shadow-hover: 0 8px 24px rgba(31,58,50,0.12);
            --shadow-primary: 0 4px 12px rgba(224,123,45,0.25);
            --spacing-section: 72px;
            --spacing-card: 24px;
            --container-max: 1200px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 200ms ease;
        }

        /* Reset & Base */
        *, *::before, *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }

        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }

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

        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(224,123,45,0.35);
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            background: none;
        }

        input {
            font-family: var(--font-stack);
        }

        ul, ol {
            list-style: none;
        }

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

        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            padding: 0 0;
        }

        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--secondary);
            white-space: nowrap;
        }

        .logo-icon {
            width: 38px;
            height: 38px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
        }

        .nav-links a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }

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

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

        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }

        .nav-cta {
            display: inline-block;
            background-color: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }

        .nav-cta:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff !important;
        }

        .nav-cta::after {
            display: none !important;
        }

        /* Mobile Menu Toggle */
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
        }

        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }

        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }

        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        /* Hero Section */
        .hero {
            background: linear-gradient(135deg, #F6F3EE 0%, #FBFAF7 100%);
            padding: 72px 0 64px;
            border-bottom: 1px solid var(--border);
        }

        .hero .container {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 56px;
            align-items: center;
        }

        .hero-content {
            display: flex;
            flex-direction: column;
            gap: 24px;
        }

        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: rgba(224,123,45,0.1);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 6px 16px;
            border-radius: var(--radius-badge);
            width: fit-content;
        }

        .hero-badge::before {
            content: '';
            width: 8px;
            height: 8px;
            background-color: var(--success);
            border-radius: 50%;
            flex-shrink: 0;
        }

        .hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--secondary);
            letter-spacing: -0.5px;
        }

        .hero-subtitle {
            font-size: 17px;
            line-height: 1.8;
            color: var(--text-muted);
            max-width: 520px;
        }

        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            margin-top: 8px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            cursor: pointer;
            white-space: nowrap;
        }

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

        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(1px);
            box-shadow: none;
        }

        .btn-secondary {
            background-color: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }

        .btn-secondary:hover {
            background-color: rgba(31,58,50,0.08);
            border-color: var(--secondary-light);
            color: var(--secondary);
            transform: translateY(-1px);
        }

        .btn-text {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            text-underline-offset: 4px;
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }

        .btn-text:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }

        .hero-trust {
            display: flex;
            flex-wrap: wrap;
            gap: 28px;
            margin-top: 16px;
        }

        .trust-item {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            font-weight: 500;
        }

        .trust-icon {
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
        }

        .trust-number {
            font-weight: 700;
            color: var(--primary);
            font-size: 16px;
        }

        .hero-visual {
            position: relative;
            aspect-ratio: 16/10;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: 0 16px 40px rgba(31,58,50,0.15);
            background-color: var(--card);
        }

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

        .hero-visual-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            background: linear-gradient(to top, rgba(31,58,50,0.85) 0%, rgba(31,58,50,0.35) 60%, transparent 100%);
            padding: 36px 24px 20px;
            color: #fff;
        }

        .hero-visual-overlay p {
            font-size: 14px;
            font-weight: 500;
        }

        /* Section Common */
        section {
            padding: var(--spacing-section) 0;
        }

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

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

        .section-label {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background-color: rgba(224,123,45,0.1);
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            letter-spacing: 1px;
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--secondary);
            letter-spacing: -0.3px;
        }

        .section-desc {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 620px;
            margin: 12px auto 0;
        }

        /* Category Entry Section */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
        }

        .category-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: var(--spacing-card);
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
            overflow: hidden;
        }

        .category-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background-color: var(--primary);
            transform: scaleX(0);
            transform-origin: left;
            transition: transform var(--transition);
        }

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

        .category-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .category-card-icon {
            width: 44px;
            height: 44px;
            background-color: rgba(224,123,45,0.1);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .category-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex-grow: 1;
        }

        .category-card-arrow {
            display: flex;
            align-items: center;
            justify-content: flex-end;
            font-size: 20px;
            color: var(--primary);
            transition: transform var(--transition);
        }

        .category-card:hover .category-card-arrow {
            transform: translateX(4px);
        }

        /* Special Topic Banner */
        .topic-banner {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            border-radius: 16px;
            padding: 48px 56px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .topic-banner::after {
            content: '';
            position: absolute;
            top: -60px;
            right: -60px;
            width: 240px;
            height: 240px;
            background-color: rgba(224,123,45,0.15);
            border-radius: 50%;
        }

        .topic-banner-left h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }

        .topic-banner-left p {
            font-size: 15px;
            line-height: 1.8;
            color: rgba(255,255,255,0.85);
            position: relative;
            z-index: 1;
        }

        .topic-banner-right {
            display: flex;
            flex-direction: column;
            gap: 16px;
            position: relative;
            z-index: 1;
        }

        .topic-feature-item {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 15px;
            font-weight: 500;
            background-color: rgba(255,255,255,0.08);
            padding: 14px 18px;
            border-radius: var(--radius-card);
            border: 1px solid rgba(255,255,255,0.15);
        }

        .topic-feature-icon {
            color: var(--primary-light);
            font-size: 18px;
            flex-shrink: 0;
            font-weight: 700;
        }

        /* News Section */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card);
        }

        .news-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 12px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .news-card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
        }

        .news-tag {
            display: inline-block;
            background-color: rgba(224,123,45,0.1);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 3px 10px;
            border-radius: var(--radius-badge);
        }

        .news-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex-grow: 1;
        }

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

        .news-card-link:hover {
            color: var(--primary-dark);
        }

        .news-empty {
            grid-column: 1 / -1;
            text-align: center;
            padding: 48px 24px;
            background-color: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-card);
        }

        .news-empty-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.5;
        }

        .news-empty p {
            font-size: 15px;
            color: var(--text-muted);
        }

        /* Hot Software Section */
        .software-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
        }

        .software-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .software-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

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

        .software-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }

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

        .software-card-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 10px;
            flex-grow: 1;
        }

        .software-rating {
            display: flex;
            align-items: center;
            gap: 4px;
            font-size: 14px;
            color: var(--warning);
            font-weight: 600;
        }

        .software-rating span {
            color: var(--text-muted);
            font-weight: 400;
            font-size: 13px;
        }

        .software-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
        }

        .software-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex-grow: 1;
        }

        .software-download-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            font-weight: 600;
            font-size: 14px;
            padding: 10px 16px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
            width: 100%;
        }

        .software-download-btn:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff;
            transform: translateY(-1px);
        }

        /* Feature Section */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
        }

        .feature-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .feature-icon {
            width: 56px;
            height: 56px;
            background-color: rgba(224,123,45,0.1);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin: 0 auto 16px;
            color: var(--primary);
        }

        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }

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

        /* Scenario Section */
        .scenario-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
        }

        .scenario-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
        }

        .scenario-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }

        .scenario-img {
            aspect-ratio: 3/2;
            overflow: hidden;
        }

        .scenario-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 400ms ease;
        }

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

        .scenario-body {
            padding: 20px;
            display: flex;
            flex-direction: column;
            gap: 8px;
        }

        .scenario-body h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
        }

        .scenario-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        .scenario-count {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
        }

        /* Stats Section */
        .stats-bar {
            background-color: var(--secondary);
            padding: 56px 0;
            color: #fff;
        }

        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 32px;
            text-align: center;
        }

        .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .stat-number {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--primary-light);
        }

        .stat-label {
            font-size: 15px;
            color: rgba(255,255,255,0.8);
            font-weight: 500;
        }

        /* Guide Process Section */
        .process-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
            position: relative;
        }

        .process-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            position: relative;
        }

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

        .process-number {
            width: 40px;
            height: 40px;
            background-color: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            margin: 0 auto 14px;
        }

        .process-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }

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

        /* Testimonial Section */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card);
        }

        .testimonial-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 28px 24px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

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

        .testimonial-stars {
            color: var(--warning);
            font-size: 16px;
            letter-spacing: 2px;
        }

        .testimonial-text {
            font-size: 15px;
            color: var(--text);
            line-height: 1.8;
            flex-grow: 1;
        }

        .testimonial-author {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .testimonial-avatar {
            width: 40px;
            height: 40px;
            background-color: rgba(224,123,45,0.15);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
            color: var(--primary);
            flex-shrink: 0;
        }

        .testimonial-name {
            font-weight: 600;
            font-size: 14px;
            color: var(--secondary);
        }

        .testimonial-role {
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .faq-item {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }

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

        .faq-item summary {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            cursor: pointer;
            list-style: none;
            transition: color var(--transition);
        }

        .faq-item summary::-webkit-details-marker {
            display: none;
        }

        .faq-item summary:hover {
            color: var(--primary);
        }

        .faq-item summary .faq-icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            font-size: 18px;
            font-weight: 400;
            transition: transform var(--transition);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
        }

        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }

        .faq-body {
            padding: 0 24px 20px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.8;
            border-top: 1px solid var(--border);
            padding-top: 14px;
        }

        /* Bottom CTA */
        .bottom-cta {
            background: linear-gradient(135deg, var(--secondary) 0%, var(--secondary-light) 100%);
            border-radius: 16px;
            padding: 56px 48px;
            text-align: center;
            color: #fff;
        }

        .bottom-cta h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #fff;
        }

        .bottom-cta p {
            font-size: 16px;
            color: rgba(255,255,255,0.85);
            margin-bottom: 24px;
        }

        .bottom-cta .btn-primary {
            background-color: var(--primary);
            color: #fff;
            font-size: 16px;
            padding: 13px 32px;
        }

        /* Footer */
        .site-footer {
            background-color: var(--secondary);
            color: #fff;
            padding: 64px 0 0;
            margin-top: var(--spacing-section);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 48px;
            padding-bottom: 48px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.8;
            margin-top: 16px;
            max-width: 320px;
        }

        .footer-col h3 {
            font-size: 15px;
            font-weight: 600;
            margin-bottom: 16px;
            color: #fff;
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-grid,
            .software-grid,
            .feature-grid,
            .scenario-grid,
            .stats-grid,
            .process-grid {
                grid-template-columns: repeat(3, 1fr);
            }

            .hero .container {
                grid-template-columns: 1fr;
                gap: 40px;
            }

            .hero-visual {
                aspect-ratio: 16/9;
            }

            .topic-banner {
                grid-template-columns: 1fr;
                gap: 32px;
                padding: 40px 32px;
            }

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

        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --spacing-card: 16px;
            }

            .menu-toggle {
                display: flex;
            }

            .nav-links {
                display: none;
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background-color: #fff;
                border-bottom: 1px solid var(--border);
                flex-direction: column;
                align-items: flex-start;
                padding: 24px;
                gap: 20px;
                box-shadow: var(--shadow-hover);
                z-index: 999;
            }

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

            .nav-links a {
                font-size: 17px;
                padding: 10px 0;
                width: 100%;
            }

            .nav-cta {
                width: 100%;
                text-align: center;
            }

            .hero {
                padding: 48px 0;
            }

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

            .hero-subtitle {
                font-size: 15px;
            }

            .category-grid,
            .software-grid,
            .feature-grid,
            .scenario-grid,
            .news-grid,
            .testimonial-grid {
                grid-template-columns: repeat(2, 1fr);
            }

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

            .process-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }

            .stat-number {
                font-size: 32px;
            }

            .bottom-cta {
                padding: 40px 24px;
            }

            .bottom-cta h2 {
                font-size: 22px;
            }

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

            .section-title {
                font-size: 22px;
            }
        }

        @media (max-width: 540px) {
            .hero h1 {
                font-size: 24px;
            }

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

            .hero-actions .btn {
                width: 100%;
                justify-content: center;
            }

            .hero-trust {
                gap: 16px;
                flex-direction: column;
                align-items: flex-start;
            }

            .category-grid,
            .software-grid,
            .feature-grid,
            .scenario-grid,
            .news-grid,
            .testimonial-grid,
            .process-grid,
            .stats-grid {
                grid-template-columns: 1fr;
            }

            .topic-banner {
                padding: 28px 20px;
                border-radius: 12px;
            }

            .topic-banner-left h2 {
                font-size: 22px;
            }

            .bottom-cta {
                padding: 32px 20px;
                border-radius: 12px;
            }

            .bottom-cta h2 {
                font-size: 20px;
            }

            .section-header {
                margin-bottom: 32px;
            }

            .section-title {
                font-size: 20px;
            }

            .container {
                padding: 0 16px;
            }

            .site-header .container {
                min-height: 60px;
            }

            .logo {
                font-size: 15px;
            }

            .logo-icon {
                width: 32px;
                height: 32px;
                font-size: 16px;
            }
        }

        @media (min-width: 1025px) {
            .footer-grid {
                grid-template-columns: 2fr 1fr 1fr 1fr;
            }
        }

/* roulang page: article */
:root {
            --primary: #E07B2D;
            --primary-dark: #C9681F;
            --primary-light: #F5A96A;
            --secondary: #1F3A32;
            --secondary-light: #2E5A4D;
            --bg: #F6F3EE;
            --bg-alt: #FBFAF7;
            --card: #FFFFFF;
            --text: #2B2B2B;
            --text-muted: #6B6B6B;
            --border: #E5DFD6;
            --success: #3D7A4E;
            --warning: #E8A843;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-sm: 0 1px 3px rgba(31,58,50,0.06);
            --shadow-hover: 0 8px 24px rgba(31,58,50,0.12);
            --shadow-primary: 0 4px 12px rgba(224,123,45,0.25);
            --spacing-section: 56px;
            --spacing-card: 24px;
            --container-max: 1200px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 200ms ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition), box-shadow var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(224,123,45,0.35);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            background: none;
        }
        input {
            font-family: var(--font-stack);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--secondary);
            white-space: nowrap;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-block;
            background-color: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        /* Article breadcrumb */
        .breadcrumb-section {
            padding: 20px 0 0;
            background: var(--bg);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: #B0A89E;
            user-select: none;
        }
        .breadcrumb span[aria-current="page"] {
            color: var(--text);
            font-weight: 500;
            max-width: 480px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        /* Article header */
        .article-page {
            padding: 40px 0 72px;
        }
        .article-main {
            max-width: 820px;
            margin: 0 auto;
        }
        .article-header {
            margin-bottom: 36px;
        }
        .article-header .category-badge {
            display: inline-block;
            background-color: rgba(224,123,45,0.1);
            color: var(--primary-dark);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-badge);
            margin-bottom: 16px;
        }
        .article-header h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--secondary);
            margin-bottom: 18px;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 18px;
            font-size: 14px;
            color: var(--text-muted);
            padding-bottom: 20px;
            border-bottom: 1px solid var(--border);
        }
        .article-meta .meta-item {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-icon {
            color: var(--primary);
            font-weight: 700;
        }
        .article-cover {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            border-radius: var(--radius-card);
            margin-bottom: 36px;
            background-color: var(--bg-alt);
            box-shadow: var(--shadow-sm);
        }
        .article-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        /* Article body */
        .article-body {
            font-size: 17px;
            line-height: 2.0;
            color: var(--text);
            max-width: 780px;
            margin: 0 auto;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--secondary);
            margin: 2em 0 0.8em;
            padding-bottom: 8px;
            border-bottom: 2px solid rgba(224,123,45,0.2);
        }
        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            color: var(--secondary);
            margin: 1.8em 0 0.7em;
        }
        .article-body blockquote {
            background: rgba(224,123,45,0.06);
            border-left: 4px solid var(--primary);
            padding: 16px 20px;
            margin: 1.5em 0;
            border-radius: 0 8px 8px 0;
            font-size: 16px;
            color: var(--text-muted);
        }
        .article-body ul,
        .article-body ol {
            padding-left: 1.5em;
            margin-bottom: 1.5em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body code {
            background: rgba(31,58,50,0.06);
            padding: 2px 8px;
            border-radius: 4px;
            font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
            font-size: 0.9em;
            color: var(--secondary);
        }
        .article-body pre {
            background: var(--secondary);
            color: #E8E4DE;
            padding: 20px;
            border-radius: var(--radius-card);
            overflow-x: auto;
            margin: 1.5em 0;
            line-height: 1.7;
        }
        .article-body pre code {
            background: transparent;
            color: inherit;
            padding: 0;
            border-radius: 0;
            font-size: 14px;
        }
        .article-body img {
            border-radius: var(--radius-card);
            margin: 1.5em auto;
        }
        .article-not-found {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 56px 32px;
            text-align: center;
            box-shadow: var(--shadow-sm);
        }
        .article-not-found .not-found-icon {
            font-size: 48px;
            color: var(--primary-light);
            margin-bottom: 16px;
        }
        .article-not-found h2 {
            font-size: 22px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .article-not-found p {
            color: var(--text-muted);
            margin-bottom: 20px;
        }
        /* Related articles */
        .related-section {
            padding: 48px 0 56px;
            background: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .related-section .section-heading {
            text-align: center;
            margin-bottom: 32px;
        }
        .related-section .section-heading h2 {
            font-size: 26px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .related-section .section-heading p {
            color: var(--text-muted);
            font-size: 15px;
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(224,123,45,0.25);
        }
        .related-card .card-cover {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg);
        }
        .related-card .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 350ms ease;
        }
        .related-card:hover .card-cover img {
            transform: scale(1.03);
        }
        .related-card .card-content {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .related-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 10px;
            line-height: 1.5;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .related-card .card-meta {
            font-size: 13px;
            color: var(--text-muted);
            margin-top: 14px;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .related-card .card-link {
            font-weight: 600;
            font-size: 14px;
        }
        /* Article prev/next nav */
        .article-nav-section {
            padding: 40px 0;
            background: var(--bg);
        }
        .article-nav-grid {
            display: grid;
            grid-template-columns: 1fr auto 1fr;
            gap: 24px;
            align-items: center;
        }
        .article-nav-link {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 18px 20px;
            display: flex;
            align-items: center;
            gap: 12px;
            transition: all var(--transition);
            box-shadow: var(--shadow-sm);
        }
        .article-nav-link:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(224,123,45,0.25);
        }
        .article-nav-link .nav-arrow {
            font-size: 20px;
            color: var(--primary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .article-nav-link .nav-label {
            font-size: 13px;
            color: var(--text-muted);
        }
        .article-nav-link .nav-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--secondary);
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .article-nav-link.prev .nav-content {
            text-align: left;
        }
        .article-nav-link.next {
            text-align: right;
            justify-content: flex-end;
        }
        .article-nav-link.next .nav-content {
            text-align: right;
        }
        .back-to-list {
            text-align: center;
        }
        .back-to-list a {
            display: inline-block;
            background: var(--secondary);
            color: #fff;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .back-to-list a:hover {
            background: var(--secondary-light);
            box-shadow: 0 4px 12px rgba(31,58,50,0.25);
            color: #fff;
        }
        /* Article CTA */
        .article-cta {
            background: linear-gradient(135deg, #1F3A32 0%, #2E5A4D 100%);
            border-radius: var(--radius-card);
            padding: 48px 40px;
            text-align: center;
            margin: 48px 0 0;
            position: relative;
            overflow: hidden;
        }
        .article-cta::before {
            content: '';
            position: absolute;
            top: -60%;
            right: -10%;
            width: 300px;
            height: 300px;
            background: rgba(224,123,45,0.15);
            border-radius: 50%;
            pointer-events: none;
        }
        .article-cta h2 {
            font-size: 24px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
            position: relative;
            z-index: 1;
        }
        .article-cta p {
            color: rgba(255,255,255,0.75);
            font-size: 15px;
            margin-bottom: 24px;
            position: relative;
            z-index: 1;
        }
        .article-cta .cta-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }
        .article-cta .cta-form input {
            flex: 1;
            background: rgba(255,255,255,0.1);
            border: 1px solid rgba(255,255,255,0.25);
            border-radius: var(--radius-btn);
            padding: 12px 18px;
            color: #fff;
            font-size: 15px;
            outline: none;
            transition: all var(--transition);
        }
        .article-cta .cta-form input::placeholder {
            color: rgba(255,255,255,0.55);
        }
        .article-cta .cta-form input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(224,123,45,0.3);
        }
        .article-cta .cta-form button {
            background: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .article-cta .cta-form button:hover {
            background: var(--primary-dark);
            box-shadow: var(--shadow-primary);
        }
        /* Footer */
        .site-footer {
            background: var(--secondary);
            color: #fff;
            padding: 56px 0 24px;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .site-footer .footer-brand .logo {
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-brand .logo-icon {
            background: var(--primary);
        }
        .site-footer .footer-brand p {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            line-height: 1.8;
            max-width: 360px;
        }
        .site-footer .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .site-footer .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .site-footer .footer-col ul li {
            margin-bottom: 10px;
        }
        .site-footer .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            transition: color var(--transition);
        }
        .site-footer .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .site-footer .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding-top: 20px;
            text-align: center;
        }
        .site-footer .footer-bottom p {
            color: rgba(255,255,255,0.6);
            font-size: 13px;
            margin: 0;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 48px;
            }
            .article-header h1 {
                font-size: 28px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .article-nav-grid {
                grid-template-columns: 1fr 1fr;
            }
            .back-to-list {
                grid-column: 1 / -1;
                order: -1;
            }
            .nav-links {
                gap: 20px;
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                bottom: 0;
                background: rgba(255,255,255,0.98);
                backdrop-filter: blur(16px);
                -webkit-backdrop-filter: blur(16px);
                flex-direction: column;
                align-items: center;
                justify-content: flex-start;
                padding: 48px 24px;
                gap: 0;
                transform: translateX(100%);
                transition: transform 300ms ease;
                z-index: 999;
                overflow-y: auto;
            }
            .nav-links.active {
                transform: translateX(0);
            }
            .nav-links li {
                width: 100%;
                text-align: center;
                margin-bottom: 20px;
            }
            .nav-links a {
                display: block;
                padding: 12px 0;
                font-size: 18px;
                font-weight: 600;
            }
            .nav-links a.nav-cta {
                display: inline-block;
                margin-top: 16px;
                padding: 12px 32px;
            }
            .nav-links a::after {
                display: none;
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-body {
                font-size: 16px;
                line-height: 1.85;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .article-nav-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .back-to-list {
                grid-column: auto;
                order: 0;
            }
            .article-nav-link.next {
                justify-content: flex-start;
                text-align: left;
            }
            .article-nav-link.next .nav-content {
                text-align: left;
            }
            .article-cta {
                padding: 36px 24px;
            }
            .article-cta .cta-form {
                flex-direction: column;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
            .site-footer .footer-brand {
                grid-column: 1 / -1;
            }
            :root {
                --spacing-section: 40px;
            }
        }
        @media (max-width: 540px) {
            .container {
                padding: 0 16px;
            }
            .article-header h1 {
                font-size: 21px;
            }
            .article-meta {
                gap: 12px;
                font-size: 13px;
                flex-wrap: wrap;
            }
            .breadcrumb span[aria-current="page"] {
                max-width: 220px;
            }
            .related-section .section-heading h2 {
                font-size: 22px;
            }
            .site-footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer .footer-brand {
                grid-column: auto;
            }
        }

/* roulang page: category1 */
:root {
    --primary: #E07B2D;
    --primary-dark: #C9681F;
    --primary-light: #F5A96A;
    --secondary: #1F3A32;
    --secondary-light: #2E5A4D;
    --bg: #F6F3EE;
    --bg-alt: #FBFAF7;
    --card: #FFFFFF;
    --text: #2B2B2B;
    --text-muted: #6B6B6B;
    --border: #E5DFD6;
    --success: #3D7A4E;
    --warning: #E8A843;
    --radius-card: 12px;
    --radius-btn: 8px;
    --radius-badge: 999px;
    --shadow-sm: 0 1px 3px rgba(31,58,50,0.06);
    --shadow-hover: 0 8px 24px rgba(31,58,50,0.12);
    --shadow-primary: 0 4px 12px rgba(224,123,45,0.25);
    --spacing-section: 72px;
    --spacing-card: 24px;
    --container-max: 1200px;
    --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    --transition: 200ms ease;
}
html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
body {
    font-family: var(--font-stack);
    font-size: 16px;
    line-height: 1.8;
    color: var(--text);
    background-color: var(--bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}
img {
    max-width: 100%;
    height: auto;
    display: block;
}
a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition), background-color var(--transition), border-color var(--transition), box-shadow var(--transition), transform var(--transition), opacity var(--transition);
}
a:hover {
    color: var(--primary-dark);
}
a:focus-visible, button:focus-visible, input:focus-visible {
    outline: 3px solid rgba(224,123,45,0.35);
    outline-offset: 2px;
    border-radius: 4px;
}
button {
    font-family: var(--font-stack);
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    background: none;
}
ul {
    list-style: none;
}
.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 24px;
}

/* Header & Navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}
.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 68px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--secondary);
    white-space: nowrap;
}
.logo-icon {
    width: 38px;
    height: 38px;
    background-color: var(--primary);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #fff;
    font-size: 20px;
    font-weight: 700;
    flex-shrink: 0;
}
.nav-links {
    display: flex;
    align-items: center;
    gap: 26px;
    list-style: none;
}
.nav-links a {
    color: var(--text);
    font-size: 15px;
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    white-space: nowrap;
}
.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary);
    transition: width var(--transition);
}
.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}
.nav-links a.active {
    color: var(--primary);
    font-weight: 600;
}
.nav-cta {
    display: inline-block;
    background-color: var(--primary);
    color: #fff !important;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--radius-btn);
    white-space: nowrap;
}
.nav-cta:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-primary);
    color: #fff !important;
}
.nav-cta::after {
    display: none !important;
}
.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: transparent;
    border: none;
}
.menu-toggle span {
    display: block;
    width: 26px;
    height: 2.5px;
    background-color: var(--secondary);
    border-radius: 2px;
    transition: all var(--transition);
}
.menu-toggle.active span:nth-child(1) {
    transform: translateY(7.5px) rotate(45deg);
}
.menu-toggle.active span:nth-child(2) {
    opacity: 0;
}
.menu-toggle.active span:nth-child(3) {
    transform: translateY(-7.5px) rotate(-45deg);
}

/* Breadcrumb */
.breadcrumb-bar {
    background-color: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 14px 0;
}
.breadcrumb-bar .container {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 14px;
    color: var(--text-muted);
}
.breadcrumb-bar a {
    color: var(--text-muted);
}
.breadcrumb-bar a:hover {
    color: var(--primary);
}
.breadcrumb-sep {
    color: #B0A89E;
}
.breadcrumb-current {
    color: var(--text);
    font-weight: 600;
}

/* Category Header */
.category-header {
    background: linear-gradient(135deg, #F6F3EE 0%, #FBFAF7 100%);
    border-bottom: 1px solid var(--border);
    padding: 56px 0 48px;
}
.category-header .container {
    text-align: center;
    max-width: 820px;
}
.category-header h1 {
    font-size: 36px;
    font-weight: 700;
    line-height: 1.3;
    color: var(--secondary);
    margin-bottom: 16px;
}
.category-header .category-desc {
    font-size: 17px;
    color: var(--text-muted);
    line-height: 1.8;
    margin-bottom: 0;
}
.category-header .keyword-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: #fff5ec;
    border: 1px solid #f5c9a3;
    color: var(--primary-dark);
    font-size: 13px;
    font-weight: 600;
    border-radius: var(--radius-badge);
    padding: 6px 16px;
    margin-bottom: 14px;
}

/* Section Common */
.section {
    padding: var(--spacing-section) 0;
}
.section-alt {
    background-color: var(--bg-alt);
}
.section-title {
    font-size: 28px;
    font-weight: 600;
    line-height: 1.35;
    color: var(--secondary);
    margin-bottom: 12px;
    text-align: center;
}
.section-subtitle {
    font-size: 16px;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 36px;
    line-height: 1.7;
}

/* Software List */
.software-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}
.software-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 18px 22px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}
.software-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-2px);
}
.software-icon {
    width: 52px;
    height: 52px;
    flex-shrink: 0;
    background-color: #FFF5EC;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}
.software-info {
    flex: 1;
    min-width: 0;
}
.software-name {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 4px;
}
.software-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 14px;
    font-size: 13px;
    color: var(--text-muted);
}
.software-meta span {
    display: inline-flex;
    align-items: center;
    gap: 4px;
}
.software-meta .meta-label {
    background-color: var(--bg-alt);
    border-radius: var(--radius-badge);
    padding: 2px 10px;
    font-weight: 500;
    color: var(--secondary-light);
}
.download-btn {
    flex-shrink: 0;
    background-color: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 14px;
    padding: 10px 20px;
    border-radius: var(--radius-btn);
    white-space: nowrap;
    transition: all var(--transition);
}
.download-btn:hover {
    background-color: var(--primary-dark);
    box-shadow: var(--shadow-primary);
    color: #fff;
    transform: translateY(-1px);
}
.see-more-wrap {
    text-align: center;
    margin-top: 28px;
}
.see-more-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background-color: transparent;
    border: 1.5px solid var(--secondary);
    color: var(--secondary);
    font-weight: 600;
    font-size: 15px;
    padding: 12px 28px;
    border-radius: var(--radius-btn);
    transition: all var(--transition);
}
.see-more-btn:hover {
    background-color: rgba(31,58,50,0.08);
    color: var(--secondary);
}

/* Feature Cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 28px 24px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    text-align: center;
}
.feature-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.feature-icon {
    width: 56px;
    height: 56px;
    margin: 0 auto 16px;
    background-color: #F0F7F2;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}
.feature-card h3 {
    font-size: 18px;
    font-weight: 600;
    color: var(--secondary);
    margin-bottom: 8px;
}
.feature-card p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
}

/* News Section */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.news-item {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    padding: 22px 20px;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.news-item:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-3px);
}
.news-item h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 8px;
}
.news-item p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 12px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.news-meta {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 13px;
    color: var(--text-muted);
}
.news-meta .news-tag {
    background-color: #FFF5EC;
    color: var(--primary-dark);
    font-weight: 600;
    padding: 2px 12px;
    border-radius: var(--radius-badge);
}
.empty-state {
    background-color: var(--card);
    border: 1px dashed var(--border);
    border-radius: var(--radius-card);
    padding: 48px 24px;
    text-align: center;
    color: var(--text-muted);
}

/* Guide Cards */
.guide-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.guide-card {
    background-color: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    display: flex;
    flex-direction: column;
    height: 100%;
}
.guide-card:hover {
    box-shadow: var(--shadow-hover);
    transform: translateY(-4px);
}
.guide-card-image {
    aspect-ratio: 16/10;
    overflow: hidden;
    background-color: #EFEBE4;
}
.guide-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}
.guide-card-body {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}
.guide-card-body h3 {
    font-size: 17px;
    font-weight: 600;
    color: var(--text);
    line-height: 1.5;
    margin-bottom: 8px;
}
.guide-card-body p {
    font-size: 14px;
    color: var(--text-muted);
    line-height: 1.7;
    flex: 1;
    margin-bottom: 10px;
}
.guide-card-body .guide-time {
    font-size: 13px;
    color: #B0A89E;
}

/* Tag Cloud */
.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}
.tag-pill {
    display: inline-block;
    background-color: var(--card);
    border: 1px solid var(--border);
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
    padding: 8px 20px;
    border-radius: var(--radius-badge);
    transition: all var(--transition);
}
.tag-pill:hover {
    background-color: var(--primary);
    border-color: var(--primary);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
}

/* CTA Section */
.cta-section {
    position: relative;
    background-image: url('/assets/images/dcbe63a409148b07.webp');
    background-size: cover;
    background-position: center;
    padding: 80px 0;
}
.cta-section::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(31,58,50,0.92) 0%, rgba(31,58,50,0.88) 100%);
}
.cta-section .container {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 720px;
}
.cta-section h2 {
    font-size: 30px;
    font-weight: 700;
    color: #fff;
    line-height: 1.4;
    margin-bottom: 14px;
}
.cta-section p {
    font-size: 16px;
    color: rgba(255,255,255,0.85);
    margin-bottom: 28px;
    line-height: 1.8;
}
.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 16px;
    flex-wrap: wrap;
}
.cta-primary {
    background-color: var(--primary);
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    transition: all var(--transition);
}
.cta-primary:hover {
    background-color: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(224,123,45,0.4);
    color: #fff;
    transform: translateY(-2px);
}
.cta-secondary {
    background-color: transparent;
    border: 1.5px solid rgba(255,255,255,0.7);
    color: #fff;
    font-weight: 600;
    font-size: 16px;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    transition: all var(--transition);
}
.cta-secondary:hover {
    background-color: rgba(255,255,255,0.12);
    border-color: #fff;
    color: #fff;
}

/* Footer */
.site-footer {
    background-color: var(--secondary);
    color: rgba(255,255,255,0.8);
    padding: 56px 0 24px;
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px;
    margin-bottom: 36px;
}
.footer-brand .logo {
    color: #fff;
    margin-bottom: 16px;
}
.footer-brand .logo-icon {
    background-color: var(--primary);
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.8;
    max-width: 320px;
}
.footer-col h3 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 16px;
}
.footer-col ul li {
    margin-bottom: 10px;
}
.footer-col a {
    color: rgba(255,255,255,0.75);
    font-size: 14px;
}
.footer-col a:hover {
    color: var(--primary-light);
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.15);
    padding-top: 20px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,0.55);
}

/* Responsive */
@media (max-width: 1023px) {
    .feature-grid,
    .news-grid,
    .guide-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}
@media (max-width: 767px) {
    .menu-toggle {
        display: flex;
    }
    .nav-links {
        position: fixed;
        top: 68px;
        right: 0;
        width: 100%;
        max-width: 420px;
        height: calc(100vh - 68px);
        background-color: #fff;
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
        padding: 24px 20px;
        box-shadow: -8px 0 30px rgba(0,0,0,0.08);
        transform: translateX(100%);
        transition: transform 250ms ease;
        overflow-y: auto;
    }
    .nav-links.open {
        transform: translateX(0);
    }
    .nav-links li,
    .nav-links a {
        width: 100%;
        display: block;
        font-size: 16px;
        padding: 12px 0;
    }
    .nav-links a.nav-cta {
        text-align: center;
        margin-top: 8px;
    }
    .nav-links a::after {
        display: none;
    }
    .category-header h1 {
        font-size: 28px;
    }
    .section {
        padding: 48px 0;
    }
    .section-title {
        font-size: 24px;
    }
    .software-item {
        flex-wrap: wrap;
        gap: 14px;
    }
    .software-icon {
        width: 44px;
        height: 44px;
        font-size: 22px;
    }
    .download-btn {
        width: 100%;
        text-align: center;
    }
    .software-meta {
        gap: 8px;
    }
    .feature-grid,
    .news-grid,
    .guide-grid {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 28px;
    }
}
@media (max-width: 520px) {
    .container {
        padding: 0 16px;
    }
    .category-header {
        padding: 36px 0 32px;
    }
    .category-header h1 {
        font-size: 24px;
    }
    .category-header .category-desc {
        font-size: 15px;
    }
    .section {
        padding: 40px 0;
    }
    .section-title {
        font-size: 22px;
    }
    .section-subtitle {
        font-size: 15px;
    }
    .software-item {
        padding: 14px 16px;
    }
    .software-name {
        font-size: 15px;
    }
    .software-meta {
        font-size: 12px;
        gap: 6px;
    }
    .cta-section h2 {
        font-size: 24px;
    }
    .cta-buttons {
        flex-direction: column;
        gap: 12px;
    }
    .cta-primary,
    .cta-secondary {
        width: 100%;
        text-align: center;
    }
}

/* roulang page: category2 */
:root {
            --primary: #E07B2D;
            --primary-dark: #C9681F;
            --primary-light: #F5A96A;
            --secondary: #1F3A32;
            --secondary-light: #2E5A4D;
            --bg: #F6F3EE;
            --bg-alt: #FBFAF7;
            --card: #FFFFFF;
            --text: #2B2B2B;
            --text-muted: #6B6B6B;
            --border: #E5DFD6;
            --success: #3D7A4E;
            --warning: #E8A843;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-sm: 0 1px 3px rgba(31,58,50,0.06);
            --shadow-hover: 0 8px 24px rgba(31,58,50,0.12);
            --shadow-primary: 0 4px 12px rgba(224,123,45,0.25);
            --spacing-section: 72px;
            --spacing-card: 24px;
            --container-max: 1200px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 200ms ease;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible,
        button:focus-visible,
        input:focus-visible {
            outline: 3px solid rgba(224,123,45,0.35);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            background: none;
        }
        input {
            font-family: var(--font-stack);
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header & Navigation */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--secondary);
            white-space: nowrap;
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-block;
            background-color: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        /* Category Hero */
        .category-hero {
            background: linear-gradient(135deg, #F6F3EE 0%, #FBFAF7 100%);
            padding: 44px 0 40px;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-custom {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .breadcrumb-custom a {
            color: var(--primary);
            font-weight: 500;
        }
        .breadcrumb-custom span {
            color: var(--text-muted);
        }
        .category-title {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.2;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .category-desc {
            font-size: 17px;
            color: var(--text-muted);
            max-width: 700px;
            line-height: 1.7;
        }
        /* Section */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background-color: var(--bg-alt);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .section-title {
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: 32px;
        }
        /* Card */
        .card-custom {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }
        .card-custom:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .card-body-custom {
            padding: var(--spacing-card);
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
        }
        .card-text {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.7;
        }
        .icon-circle {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background-color: rgba(224,123,45,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 700;
            font-size: 20px;
            margin-bottom: 16px;
        }
        .icon-square {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background-color: var(--secondary);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            margin-bottom: 16px;
        }
        /* Feature List */
        .feature-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .feature-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            color: var(--text);
            font-size: 15px;
            margin-bottom: 10px;
            line-height: 1.6;
        }
        .feature-list li::before {
            content: '✓';
            color: var(--success);
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 2px;
        }
        /* Topic Detail Card */
        .topic-detail-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            transition: all var(--transition);
        }
        .topic-detail-card:hover {
            box-shadow: var(--shadow-hover);
        }
        .topic-detail-image {
            position: relative;
            min-height: 320px;
            background-size: cover;
            background-position: center;
        }
        .topic-detail-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            position: absolute;
            top: 0;
            left: 0;
        }
        .topic-detail-content {
            padding: 36px;
            display: flex;
            flex-direction: column;
            justify-content: center;
        }
        .topic-detail-content h2 {
            font-size: 24px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 16px;
            line-height: 1.3;
        }
        .topic-detail-content p {
            font-size: 16px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 24px;
        }
        .btn-group-custom {
            display: flex;
            gap: 12px;
            flex-wrap: wrap;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            padding: 12px 24px;
            border-radius: var(--radius-btn);
            text-align: center;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
        }
        .btn-primary-custom {
            background-color: var(--primary);
            color: #fff;
        }
        .btn-primary-custom:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .btn-outline-custom {
            background-color: transparent;
            border: 1.5px solid var(--secondary);
            color: var(--secondary);
        }
        .btn-outline-custom:hover {
            background-color: rgba(31,58,50,0.08);
            border-color: var(--secondary);
            color: var(--secondary);
        }
        .btn-text {
            color: var(--primary);
            font-weight: 600;
            text-decoration: underline;
            background: none;
            padding: 4px 0;
        }
        .btn-text:hover {
            color: var(--primary-dark);
            text-decoration: none;
        }
        /* Software List */
        .software-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }
        .software-item {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: 16px 20px;
            display: flex;
            align-items: center;
            gap: 16px;
            flex-wrap: wrap;
            transition: all var(--transition);
        }
        .software-item:hover {
            box-shadow: var(--shadow-hover);
            border-color: var(--primary-light);
            transform: translateY(-2px);
        }
        .software-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background-color: rgba(224,123,45,0.12);
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .software-info {
            flex: 1 1 200px;
        }
        .software-name {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
        }
        .software-meta {
            font-size: 13px;
            color: var(--text-muted);
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }
        .software-desc {
            flex: 1 1 240px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }
        .software-action {
            flex-shrink: 0;
        }
        .badge-custom {
            display: inline-block;
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            font-size: 12px;
            font-weight: 600;
            background-color: rgba(224,123,45,0.12);
            color: var(--primary);
            white-space: nowrap;
        }
        /* Tutorial Cards */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .tutorial-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            padding: var(--spacing-card);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tutorial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .tutorial-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .tutorial-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            flex: 1;
            margin-bottom: 12px;
        }
        .tutorial-meta {
            font-size: 12px;
            color: var(--text-muted);
            border-top: 1px solid var(--border);
            padding-top: 12px;
            display: flex;
            justify-content: space-between;
        }
        /* FAQ */
        .faq-list {
            max-width: 800px;
            margin: 0 auto;
        }
        .faq-item {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 24px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--secondary);
            text-align: left;
            transition: background-color var(--transition);
        }
        .faq-question:hover {
            background-color: rgba(31,58,50,0.04);
        }
        .faq-icon {
            font-size: 24px;
            font-weight: 300;
            color: var(--primary);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 200ms ease, padding 200ms ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 20px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-muted);
            line-height: 1.8;
        }
        /* CTA Section */
        .cta-section {
            background-color: var(--secondary);
            padding: 56px 0;
            border-radius: var(--radius-card);
            margin: 0 24px;
        }
        .cta-content {
            text-align: center;
            color: #fff;
        }
        .cta-content h2 {
            font-size: 28px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .cta-content p {
            font-size: 16px;
            color: rgba(255,255,255,0.8);
            margin-bottom: 24px;
        }
        .cta-btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            background-color: var(--primary);
            color: #fff;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            transition: all var(--transition);
        }
        .cta-btn:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff;
            transform: translateY(-1px);
        }
        /* Footer */
        .site-footer {
            background-color: var(--secondary);
            color: rgba(255,255,255,0.8);
            padding: 56px 0 0;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 32px;
            padding-bottom: 36px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.7);
            line-height: 1.7;
        }
        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 8px;
        }
        .footer-col a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding: 20px 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }
        /* Responsive */
        @media (max-width: 1024px) {
            :root {
                --spacing-section: 56px;
                --spacing-card: 20px;
            }
            .topic-detail-card {
                grid-template-columns: 1fr;
            }
            .topic-detail-image {
                min-height: 240px;
            }
            .tutorial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                position: fixed;
                top: 68px;
                left: 0;
                width: 100%;
                height: calc(100vh - 68px);
                background-color: #fff;
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 20px;
                transform: translateX(100%);
                transition: transform 300ms ease;
                z-index: 999;
                box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            }
            .nav-links.open {
                transform: translateX(0);
            }
            .nav-links a {
                font-size: 18px;
            }
            .nav-cta {
                padding: 12px 28px;
            }
            .category-title {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .software-item {
                flex-direction: column;
                align-items: flex-start;
            }
            .software-action {
                width: 100%;
            }
            .software-action .btn {
                width: 100%;
            }
            .tutorial-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 16px;
            }
            .category-title {
                font-size: 24px;
            }
            .topic-detail-content {
                padding: 24px;
            }
            .btn-group-custom {
                flex-direction: column;
                align-items: stretch;
            }
            .btn-group-custom .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .cta-section {
                margin: 0 16px;
                padding: 40px 16px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #E07B2D;
            --primary-dark: #C9681F;
            --primary-light: #F5A96A;
            --secondary: #1F3A32;
            --secondary-light: #2E5A4D;
            --bg: #F6F3EE;
            --bg-alt: #FBFAF7;
            --card: #FFFFFF;
            --text: #2B2B2B;
            --text-muted: #6B6B6B;
            --border: #E5DFD6;
            --success: #3D7A4E;
            --warning: #E8A843;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-badge: 999px;
            --shadow-sm: 0 1px 3px rgba(31,58,50,0.06);
            --shadow-hover: 0 8px 24px rgba(31,58,50,0.12);
            --shadow-primary: 0 4px 12px rgba(224,123,45,0.25);
            --spacing-section: 72px;
            --spacing-card: 24px;
            --container-max: 1200px;
            --font-stack: "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
            --transition: 200ms ease;
        }
        @media (max-width: 768px) {
            :root {
                --spacing-section: 48px;
                --spacing-card: 16px;
            }
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: var(--font-stack);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
            background-color: var(--bg);
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition), background-color var(--transition), border-color var(--transition), opacity var(--transition);
        }
        a:hover {
            color: var(--primary-dark);
        }
        a:focus-visible, button:focus-visible, input:focus-visible {
            outline: 3px solid rgba(224,123,45,0.35);
            outline-offset: 2px;
            border-radius: 4px;
        }
        button {
            font-family: var(--font-stack);
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            background: none;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            max-width: var(--container-max);
            margin: 0 auto;
            padding: 0 24px;
        }
        /* Header */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background-color: rgba(255,255,255,0.92);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            min-height: 68px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 700;
            font-size: 18px;
            color: var(--secondary);
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--secondary);
        }
        .logo-icon {
            width: 38px;
            height: 38px;
            background-color: var(--primary);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 28px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links a {
            color: var(--text);
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            position: relative;
            white-space: nowrap;
        }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 2px;
            background-color: var(--primary);
            transition: width var(--transition);
        }
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        .nav-links a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-block;
            background-color: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 10px 22px;
            border-radius: var(--radius-btn);
            white-space: nowrap;
            transition: all var(--transition);
        }
        .nav-cta:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff !important;
        }
        .nav-cta::after {
            display: none !important;
        }
        .menu-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            background: transparent;
            border: none;
        }
        .menu-toggle span {
            display: block;
            width: 26px;
            height: 2.5px;
            background-color: var(--secondary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .menu-toggle.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .menu-toggle.active span:nth-child(2) {
            opacity: 0;
        }
        .menu-toggle.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        /* Breadcrumb */
        .breadcrumb-section {
            background-color: var(--bg-alt);
            padding: 28px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 14px;
            color: var(--text-muted);
            margin: 0;
            padding: 0;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .separator {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text);
            font-weight: 500;
            pointer-events: none;
        }
        /* Page Header */
        .page-header {
            padding: 56px 0 40px;
            background: linear-gradient(135deg, #F6F3EE 0%, #FBFAF7 100%);
            border-bottom: 1px solid var(--border);
        }
        .page-header .container {
            max-width: 800px;
        }
        .page-header h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--secondary);
            margin-bottom: 16px;
        }
        .page-header .page-desc {
            font-size: 17px;
            color: var(--text-muted);
            line-height: 1.8;
            margin-bottom: 0;
        }
        /* Section common */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-alt {
            background-color: var(--bg-alt);
        }
        .section-title {
            font-size: 28px;
            font-weight: 600;
            line-height: 1.3;
            color: var(--secondary);
            margin-bottom: 12px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-card);
            line-height: 1.7;
            max-width: 680px;
        }
        .section-header {
            margin-bottom: var(--spacing-card);
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        /* Resource Grid */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-card);
        }
        .resource-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .resource-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .resource-card .card-img {
            aspect-ratio: 16/10;
            background-color: var(--bg);
            overflow: hidden;
        }
        .resource-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .resource-card .card-body {
            padding: 20px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .resource-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .resource-card .card-count {
            display: inline-block;
            font-size: 13px;
            color: var(--primary);
            font-weight: 600;
            background-color: rgba(224,123,45,0.08);
            padding: 4px 12px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .resource-card .card-desc {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
            flex: 1;
        }
        .resource-card .card-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
            margin-top: 16px;
            color: var(--primary);
        }
        .resource-card .card-link:hover {
            color: var(--primary-dark);
        }
        .resource-card .card-link .arrow {
            transition: transform var(--transition);
            display: inline-block;
        }
        .resource-card .card-link:hover .arrow {
            transform: translateX(4px);
        }
        /* View more */
        .view-more-wrap {
            text-align: center;
            margin-top: 32px;
        }
        .btn-primary {
            display: inline-block;
            background-color: var(--primary);
            color: #fff !important;
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: none;
            font-size: 16px;
            transition: all var(--transition);
        }
        .btn-primary:hover {
            background-color: var(--primary-dark);
            box-shadow: var(--shadow-primary);
            color: #fff !important;
        }
        .btn-secondary {
            display: inline-block;
            background-color: transparent;
            color: var(--secondary);
            font-weight: 600;
            padding: 12px 28px;
            border-radius: var(--radius-btn);
            border: 1.5px solid var(--secondary);
            font-size: 16px;
            transition: all var(--transition);
        }
        .btn-secondary:hover {
            background-color: rgba(31,58,50,0.08);
            color: var(--secondary);
        }
        /* News / CMS list */
        .news-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card);
        }
        .news-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .news-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .news-card .news-tag {
            display: inline-block;
            font-size: 12px;
            color: var(--primary);
            font-weight: 600;
            background-color: rgba(224,123,45,0.08);
            padding: 3px 10px;
            border-radius: var(--radius-badge);
            margin-bottom: 12px;
            align-self: flex-start;
        }
        .news-card .news-title {
            font-size: 16px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .news-card .news-title a {
            color: var(--text);
        }
        .news-card .news-title a:hover {
            color: var(--primary);
        }
        .news-card .news-summary {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }
        .news-card .news-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
        }
        .news-card .news-meta .dot {
            width: 4px;
            height: 4px;
            background-color: var(--border);
            border-radius: 50%;
        }
        .news-empty {
            text-align: center;
            padding: 60px 20px;
            background-color: var(--card);
            border: 1px dashed var(--border);
            border-radius: var(--radius-card);
            color: var(--text-muted);
        }
        .news-empty .empty-icon {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.6;
        }
        .news-empty p {
            font-size: 16px;
            margin-bottom: 4px;
        }
        /* Feature Cards */
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card);
        }
        .feature-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 24px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .feature-card .feature-icon {
            width: 52px;
            height: 52px;
            background-color: rgba(224,123,45,0.1);
            border-radius: var(--radius-card);
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
            font-size: 24px;
            color: var(--primary);
        }
        .feature-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 0;
        }
        /* Tags */
        .tags-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .tag-pill {
            display: inline-block;
            padding: 8px 20px;
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-badge);
            font-size: 14px;
            color: var(--text);
            font-weight: 500;
            transition: all var(--transition);
        }
        .tag-pill:hover {
            background-color: var(--primary);
            color: #fff;
            border-color: var(--primary);
            box-shadow: var(--shadow-primary);
        }
        /* Tutorial cards */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-card);
        }
        .tutorial-card {
            background-color: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-card);
            padding: 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .tutorial-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: var(--primary-light);
        }
        .tutorial-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .tutorial-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .tutorial-card .tutorial-meta {
            font-size: 12px;
            color: var(--text-muted);
        }
        /* CTA */
        .cta-section {
            background-color: var(--secondary);
            padding: 56px 0;
            text-align: center;
        }
        .cta-section h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .cta-section p {
            font-size: 16px;
            color: rgba(255,255,255,0.7);
            margin-bottom: 24px;
            line-height: 1.7;
        }
        .cta-section .btn-primary {
            font-size: 17px;
            padding: 14px 32px;
        }
        .cta-section .btn-primary:hover {
            background-color: var(--primary-light);
            box-shadow: 0 6px 18px rgba(0,0,0,0.25);
        }
        /* Footer */
        .site-footer {
            background-color: var(--secondary);
            color: #fff;
            padding: 56px 0 0;
        }
        .site-footer .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .logo {
            font-size: 18px;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand .logo:hover {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            line-height: 1.7;
            margin-bottom: 0;
        }
        .footer-col h3 {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255,255,255,0.65);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--primary-light);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding: 20px 0;
            text-align: center;
        }
        .footer-bottom p {
            font-size: 13px;
            color: rgba(255,255,255,0.5);
            margin-bottom: 0;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .resource-grid {
                grid-template-columns: repeat(3, 1fr);
            }
            .news-grid, .tutorial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feature-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 768px) {
            .menu-toggle {
                display: flex;
            }
            .nav-links {
                display: none;
                position: fixed;
                top: 68px;
                left: 0;
                right: 0;
                background-color: #fff;
                flex-direction: column;
                gap: 0;
                padding: 20px 24px;
                border-bottom: 1px solid var(--border);
                box-shadow: 0 12px 24px rgba(31,58,50,0.1);
                z-index: 999;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links a {
                display: block;
                padding: 14px 0;
                font-size: 16px;
                border-bottom: 1px solid var(--border);
            }
            .nav-links li:last-child a {
                border-bottom: none;
            }
            .nav-links a.nav-cta {
                display: inline-block;
                margin-top: 12px;
                padding: 12px 24px;
                text-align: center;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .section-title {
                font-size: 24px;
            }
            .resource-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 16px;
            }
            .news-grid, .tutorial-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .feature-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .site-footer {
                padding: 40px 0 0;
            }
            .section {
                padding: 40px 0;
            }
            .page-header {
                padding: 40px 0 32px;
            }
        }
        @media (max-width: 540px) {
            .resource-grid {
                grid-template-columns: 1fr;
            }
            .container {
                padding: 0 16px;
            }
            .page-header h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
        }