/* roulang page: index */
:root {
            --primary: #D9480F;
            --primary-hover: #BC3F0C;
            --primary-light: #FDE8DD;
            --secondary: #2F9E44;
            --secondary-hover: #22853A;
            --secondary-light: #E4F5E8;
            --bg: #F7F4ED;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-secondary: #5B6673;
            --text-muted: #8B95A1;
            --border: #E5DED3;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.05);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.06);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Source Han Sans SC", "Alibaba PuHuiTi", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Source Code Pro", monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --container: 1200px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

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

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
        }

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

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

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

        button, input, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

        ul, ol {
            list-style: none;
        }

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(247, 244, 237, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(31, 41, 51, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: var(--spacing-lg);
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }

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

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }

        .nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width var(--transition);
        }

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

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

        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg);
            z-index: 99;
            padding: var(--spacing-2xl) var(--spacing-lg);
            flex-direction: column;
            gap: var(--spacing-lg);
            overflow-y: auto;
        }

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

        .mobile-menu a {
            font-size: 18px;
            font-weight: 600;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            transition: color var(--transition), padding-left var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: var(--primary);
            padding-left: 8px;
        }

        /* ============ Section Base ============ */
        .section {
            padding: var(--spacing-3xl) 0;
        }

        .section-alt {
            background-color: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

        .section-header {
            text-align: center;
            max-width: 680px;
            margin: 0 auto var(--spacing-2xl);
        }

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .section-tag {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.5px;
        }

        /* ============ Hero ============ */
        .hero {
            position: relative;
            padding: var(--spacing-4xl) 0 var(--spacing-3xl);
            background-color: var(--bg);
            background-image: radial-gradient(circle, rgba(217, 72, 15, 0.04) 1px, transparent 1px);
            background-size: 28px 28px;
            overflow: hidden;
        }

        .hero::before {
            content: '';
            position: absolute;
            top: -120px;
            right: -120px;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(217, 72, 15, 0.06) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }

        .hero-inner {
            display: grid;
            grid-template-columns: 1.15fr 0.85fr;
            gap: var(--spacing-3xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }

        .hero-content h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text);
            letter-spacing: -0.5px;
            margin-bottom: var(--spacing-lg);
        }

        .hero-content h1 .highlight {
            color: var(--primary);
            position: relative;
        }

        .hero-content .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: var(--spacing-xl);
            max-width: 520px;
        }

        .hero-cta-group {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            margin-bottom: var(--spacing-xl);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-size: 15px;
            font-weight: 600;
            padding: 12px 24px;
            border-radius: 10px;
            transition: all var(--transition);
            white-space: nowrap;
            letter-spacing: 0.2px;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 12px rgba(217, 72, 15, 0.3);
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            box-shadow: 0 6px 20px rgba(217, 72, 15, 0.4);
            transform: translateY(-1px);
            color: #fff;
        }

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: 0 2px 8px rgba(217, 72, 15, 0.3);
        }

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

        .btn-outline:hover {
            background: var(--secondary-light);
            border-color: var(--secondary-hover);
            color: var(--secondary-hover);
            transform: translateY(-1px);
        }

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

        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        .hero-stats {
            display: flex;
            gap: var(--spacing-xl);
            flex-wrap: wrap;
        }

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

        .hero-stat-number {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }

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

        .hero-visual {
            position: relative;
        }

        .hero-card {
            background: var(--surface);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-lg);
            padding: var(--spacing-xl);
            position: relative;
            z-index: 1;
        }

        .hero-card::after {
            content: '';
            position: absolute;
            inset: -6px;
            border-radius: calc(var(--radius-lg) + 6px);
            border: 2px dashed rgba(47, 158, 68, 0.3);
            pointer-events: none;
            z-index: -1;
        }

        .hero-card-header {
            display: flex;
            align-items: center;
            gap: 12px;
            margin-bottom: var(--spacing-lg);
        }

        .hero-card-icon {
            width: 48px;
            height: 48px;
            background: var(--primary-light);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        .hero-card-title {
            font-size: 16px;
            font-weight: 700;
            color: var(--text);
        }

        .hero-card-sub {
            font-size: 13px;
            color: var(--text-secondary);
        }

        .hero-card-filename {
            font-size: 14px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
        }

        .hero-card-filename strong {
            color: var(--text);
            font-family: var(--font-mono);
            font-size: 13px;
        }

        .hero-card-progress {
            height: 6px;
            background: var(--border);
            border-radius: 3px;
            margin-bottom: var(--spacing-md);
            overflow: hidden;
        }

        .hero-card-progress-bar {
            height: 100%;
            width: 72%;
            background: linear-gradient(90deg, var(--secondary), #4CAF50);
            border-radius: 3px;
        }

        .hero-card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-sm);
        }

        .hero-card-badge {
            display: inline-flex;
            align-items: center;
            gap: 4px;
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
            background: var(--secondary-light);
            padding: 4px 10px;
            border-radius: 20px;
        }

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

        /* ============ Search Bar ============ */
        .search-section {
            padding: 0 0 var(--spacing-2xl);
            background: var(--bg);
        }

        .search-bar {
            display: flex;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            align-items: center;
        }

        .search-input-wrap {
            flex: 1;
            min-width: 200px;
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .search-input-wrap svg {
            flex-shrink: 0;
            color: var(--text-muted);
        }

        .search-input {
            width: 100%;
            height: 44px;
            padding: 0 12px;
            font-size: 15px;
            color: var(--text);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .search-input::placeholder {
            color: var(--text-muted);
        }

        .search-input:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(217, 72, 15, 0.1);
        }

        .search-select {
            height: 44px;
            padding: 0 32px 0 12px;
            font-size: 14px;
            color: var(--text);
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            cursor: pointer;
            transition: border-color var(--transition), box-shadow var(--transition);
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235B6673' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
        }

        .search-select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(217, 72, 15, 0.1);
        }

        /* ============ Category Entry ============ */
        .category-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .category-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            transition: all var(--transition);
            position: relative;
            overflow: hidden;
            text-decoration: none;
            color: var(--text);
        }

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

        .category-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
            color: var(--text);
        }

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

        .category-card-icon {
            width: 52px;
            height: 52px;
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
            margin-bottom: var(--spacing-md);
        }

        .category-card:nth-child(1) .category-card-icon {
            background: var(--primary-light);
        }
        .category-card:nth-child(2) .category-card-icon {
            background: var(--secondary-light);
        }
        .category-card:nth-child(3) .category-card-icon {
            background: #FFF3E0;
        }

        .category-card h3 {
            font-size: 19px;
            font-weight: 700;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.2px;
        }

        .category-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: var(--spacing-md);
        }

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

        .category-card:hover .category-card-link {
            gap: 8px;
        }

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

        .news-card {
            display: block;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
            text-decoration: none;
            color: var(--text);
        }

        .news-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            color: var(--text);
        }

        .news-card-thumb {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg);
            position: relative;
        }

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

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

        .news-card-body {
            padding: var(--spacing-lg);
        }

        .news-card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .news-card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.2px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .news-card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            margin-bottom: var(--spacing-md);
        }

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

        .news-empty {
            text-align: center;
            padding: var(--spacing-3xl);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ============ Hot Software Ranking ============ */
        .ranking-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .ranking-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition);
            position: relative;
            text-decoration: none;
            color: var(--text);
            display: block;
        }

        .ranking-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: var(--border);
            color: var(--text);
        }

        .ranking-number {
            position: absolute;
            top: var(--spacing-md);
            right: var(--spacing-md);
            font-size: 42px;
            font-weight: 700;
            color: rgba(217, 72, 15, 0.15);
            line-height: 1;
            letter-spacing: -2px;
        }

        .ranking-card-thumb {
            aspect-ratio: 16 / 9;
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: var(--spacing-md);
            background: var(--bg);
        }

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

        .ranking-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
            letter-spacing: -0.2px;
            display: -webkit-box;
            -webkit-line-clamp: 1;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

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

        .ranking-card .ranking-meta {
            font-size: 13px;
            color: var(--text-muted);
        }

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

        .process-step {
            text-align: center;
            padding: var(--spacing-xl) var(--spacing-lg);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            transition: all var(--transition);
            position: relative;
        }

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

        .process-step-number {
            width: 44px;
            height: 44px;
            margin: 0 auto var(--spacing-md);
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

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

        /* ============ Feature Section ============ */
        .feature-split {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }

        .feature-content h2 {
            font-size: 24px;
            font-weight: 700;
            line-height: 1.4;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.3px;
        }

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

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            background: var(--bg);
        }

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

        .feature-points {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: var(--spacing-md);
        }

        .feature-points li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        .feature-points li::before {
            content: '✓';
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 20px;
            height: 20px;
            background: var(--secondary-light);
            color: var(--secondary);
            border-radius: 50%;
            font-size: 11px;
            font-weight: 700;
            flex-shrink: 0;
            margin-top: 3px;
        }

        /* ============ Tutorial Cards ============ */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .tutorial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition);
            text-decoration: none;
            color: var(--text);
            display: block;
        }

        .tutorial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            color: var(--text);
        }

        .tutorial-card-badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--secondary);
            background: var(--secondary-light);
            padding: 3px 10px;
            border-radius: 20px;
            margin-bottom: var(--spacing-sm);
        }

        .tutorial-card-badge.difficulty {
            color: var(--primary);
            background: var(--primary-light);
        }

        .tutorial-card h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            line-height: 1.5;
            letter-spacing: -0.2px;
        }

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

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

        .tutorial-card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            gap: var(--spacing-md);
        }

        /* ============ Security Section ============ */
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }

        .security-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            transition: all var(--transition);
        }

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

        .security-icon {
            width: 56px;
            height: 56px;
            margin: 0 auto var(--spacing-md);
            background: var(--secondary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 28px;
        }

        .security-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }

        .security-card p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* ============ Timeline ============ */
        .timeline {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
            position: relative;
            padding-left: 24px;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 8px;
            top: 8px;
            bottom: 8px;
            width: 2px;
            background: var(--border);
            border-radius: 1px;
        }

        .timeline-item {
            position: relative;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-lg);
            transition: all var(--transition);
            text-decoration: none;
            color: var(--text);
            display: block;
        }

        .timeline-item::before {
            content: '';
            position: absolute;
            left: -20px;
            top: 20px;
            width: 10px;
            height: 10px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid var(--bg);
            box-shadow: 0 0 0 2px var(--primary);
        }

        .timeline-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateX(4px);
            color: var(--text);
        }

        .timeline-item h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: var(--spacing-xs);
        }

        .timeline-item:hover h3 {
            color: var(--primary);
        }

        .timeline-item .timeline-date {
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-xs);
        }

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

        /* ============ Testimonials ============ */
        .testimonial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }

        .testimonial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition);
        }

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

        .testimonial-stars {
            color: #F5A623;
            font-size: 16px;
            letter-spacing: 2px;
            margin-bottom: var(--spacing-sm);
        }

        .testimonial-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: var(--spacing-md);
        }

        .testimonial-author {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
        }

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

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

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

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

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-md);
            padding: var(--spacing-lg);
            cursor: pointer;
            text-align: left;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            background: none;
            transition: all var(--transition);
        }

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

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            background: var(--primary-light);
            border-radius: 50%;
            transition: transform var(--transition);
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height var(--transition), padding var(--transition);
            padding: 0 var(--spacing-lg);
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 var(--spacing-lg) var(--spacing-lg);
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
        }

        /* ============ CTA Banner ============ */
        .cta-banner {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }

        .cta-banner::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            background: rgba(255, 255, 255, 0.08);
            border-radius: 50%;
            pointer-events: none;
        }

        .cta-banner h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
        }

        .cta-banner p {
            font-size: 15px;
            opacity: 0.9;
            margin-bottom: var(--spacing-lg);
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn {
            position: relative;
            z-index: 1;
        }

        .cta-banner .btn-white {
            background: #fff;
            color: var(--primary);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
        }

        .cta-banner .btn-white:hover {
            background: #f5f0ea;
            color: var(--primary-hover);
            transform: translateY(-1px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.2);
        }

        /* ============ Tag Cloud ============ */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
            justify-content: center;
        }

        .tag-link {
            display: inline-block;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--surface);
            border: 1px solid var(--border);
            padding: 6px 16px;
            border-radius: 20px;
            transition: all var(--transition);
            text-decoration: none;
        }

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

        /* ============ Footer ============ */
        .site-footer {
            background: #1F2933;
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-3xl) 0 var(--spacing-xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            margin-bottom: var(--spacing-2xl);
        }

        .footer-brand .logo-text {
            color: #fff;
            font-size: 20px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            margin-top: var(--spacing-md);
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
        }

        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
        }

        .footer-col a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: var(--spacing-lg);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.5);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }

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

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .hero-inner {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }

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

            .hero-visual {
                max-width: 480px;
            }

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

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

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

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

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

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

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

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

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

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

            .hamburger {
                display: flex;
            }

            .section {
                padding: var(--spacing-2xl) 0;
            }

            .hero {
                padding: var(--spacing-2xl) 0 var(--spacing-xl);
            }

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

            .hero-stats {
                gap: var(--spacing-md);
            }

            .hero-stat-number {
                font-size: 20px;
            }

            .search-bar {
                flex-direction: column;
                align-items: stretch;
            }

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

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

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

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

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

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

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

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .section-header h2 {
                font-size: 22px;
            }

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

            .container {
                padding: 0 var(--spacing-md);
            }

            .hero-cta-group {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .hero-card {
                padding: var(--spacing-lg);
            }
        }

        @media (max-width: 520px) {
            .hero-content h1 {
                font-size: 21px;
                line-height: 1.45;
            }

            .section-header h2 {
                font-size: 20px;
            }

            .header-inner {
                height: 60px;
            }

            .logo-text {
                font-size: 16px;
            }

            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 15px;
            }

            .search-bar {
                padding: var(--spacing-sm);
            }

            .search-input {
                font-size: 14px;
                height: 40px;
            }

            .search-select {
                height: 40px;
                font-size: 13px;
            }
        }

/* roulang page: article */
:root {
            --primary: #D9480F;
            --primary-hover: #BC3F0C;
            --primary-light: #FDE8DD;
            --secondary: #2F9E44;
            --secondary-hover: #22853A;
            --secondary-light: #E4F5E8;
            --bg: #F7F4ED;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-secondary: #5B6673;
            --text-muted: #8B95A1;
            --border: #E5DED3;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.05);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.06);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Source Han Sans SC", "Alibaba PuHuiTi", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Source Code Pro", monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --container: 1200px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            margin: 0;
        }

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

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

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

        button, input, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(247, 244, 237, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(31, 41, 51, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: var(--spacing-lg);
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }

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

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }

        .nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width var(--transition);
        }

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

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

        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

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

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

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

        /* ============ Buttons ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 20px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            line-height: 1.5;
            transition: all var(--transition);
            border: 2px solid transparent;
            text-decoration: none;
            cursor: pointer;
            outline: none;
        }

        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

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

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

        .btn-primary:active {
            transform: translateY(0);
            box-shadow: none;
        }

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

        .btn-outline-primary:hover {
            background: var(--primary-light);
            border-color: var(--primary);
            color: var(--primary-hover);
            transform: translateY(-1px);
        }

        .btn-outline-secondary {
            background: transparent;
            color: var(--secondary);
            border-color: var(--secondary);
        }

        .btn-outline-secondary:hover {
            background: var(--secondary-light);
            border-color: var(--secondary);
            color: var(--secondary-hover);
            transform: translateY(-1px);
        }

        .btn-lg {
            padding: 12px 28px;
            font-size: 16px;
        }

        .btn-sm {
            padding: 6px 14px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* ============ Breadcrumb ============ */
        .breadcrumb-section {
            background-color: #FBF8F3;
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }

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

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

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

        .breadcrumb .separator {
            color: var(--text-muted);
            user-select: none;
        }

        .breadcrumb .current {
            color: var(--text);
            font-weight: 600;
            max-width: 300px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }

        /* ============ Article Head ============ */
        .article-head {
            padding: 48px 0 24px;
            background-color: var(--bg);
        }

        .article-head .article-title {
            font-size: 32px;
            line-height: 1.4;
            font-weight: 700;
            color: var(--text);
            margin: 0 0 16px;
            letter-spacing: -0.3px;
        }

        .article-meta {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 16px;
            font-size: 14px;
            color: var(--text-secondary);
        }

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

        .article-meta .badge-category {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 600;
            font-size: 13px;
        }

        /* ============ Article Body ============ */
        .article-body-section {
            padding: 24px 0 48px;
        }

        .article-body {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px;
            box-shadow: var(--shadow-sm);
            font-size: 16px;
            line-height: 1.8;
            color: var(--text);
        }

        .article-body h2 {
            font-size: 26px;
            line-height: 1.4;
            font-weight: 700;
            margin: 32px 0 16px;
            color: var(--text);
        }

        .article-body h3 {
            font-size: 20px;
            line-height: 1.5;
            font-weight: 600;
            margin: 24px 0 12px;
            color: var(--text);
        }

        .article-body h4 {
            font-size: 18px;
            line-height: 1.5;
            font-weight: 600;
            margin: 20px 0 10px;
            color: var(--text);
        }

        .article-body p {
            margin: 0 0 1em;
        }

        .article-body ul,
        .article-body ol {
            padding-left: 24px;
            margin: 0 0 1em;
        }

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

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: #FFF9F5;
            padding: 16px 20px;
            margin: 20px 0;
            border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
            color: var(--text-secondary);
        }

        .article-body code {
            font-family: var(--font-mono);
            background: #F4F1EB;
            padding: 2px 6px;
            border-radius: 4px;
            font-size: 0.9em;
            color: #B4370E;
        }

        .article-body pre {
            background: #1F2933;
            color: #F4F1EB;
            padding: 20px;
            border-radius: var(--radius-sm);
            overflow-x: auto;
            font-family: var(--font-mono);
            font-size: 14px;
            line-height: 1.6;
            margin: 20px 0;
        }

        .article-body pre code {
            background: none;
            color: inherit;
            padding: 0;
            font-size: inherit;
        }

        .article-body img {
            border-radius: var(--radius-md);
            margin: 20px auto;
            max-width: 100%;
            border: 1px solid var(--border);
        }

        .article-body a {
            color: var(--primary);
            text-decoration: underline;
        }

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

        /* ============ Resource Card ============ */
        .article-resource-section {
            padding: 24px 0;
        }

        .resource-card {
            background: linear-gradient(135deg, #FFF5ED 0%, #FFFFFF 100%);
            border: 1px solid #F3D9C8;
            border-radius: var(--radius-lg);
            padding: 28px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 20px;
            box-shadow: var(--shadow-sm);
        }

        .resource-card .resource-icon {
            flex-shrink: 0;
            width: 52px;
            height: 52px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            color: var(--primary);
        }

        .resource-card .resource-content {
            flex: 1;
            min-width: 200px;
        }

        .resource-card .resource-content h3 {
            font-size: 18px;
            font-weight: 700;
            margin: 0 0 4px;
            color: var(--text);
        }

        .resource-card .resource-content p {
            margin: 0;
            font-size: 14px;
            color: var(--text-secondary);
        }

        .resource-card .btn {
            flex-shrink: 0;
        }

        /* ============ Related Posts ============ */
        .related-section {
            padding: 48px 0;
            background-color: #FBF8F3;
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }

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

        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-header p {
            font-size: 16px;
            color: var(--text-secondary);
            margin: 8px 0 0;
        }

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

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

        .post-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
            border-color: #D9CFC2;
        }

        .post-card .post-thumb {
            position: relative;
            padding-top: 56.25%; /* 16:9 */
            background: #FAF7F2;
            overflow: hidden;
        }

        .post-card .post-thumb img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s ease;
        }

        .post-card:hover .post-thumb img {
            transform: scale(1.02);
        }

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

        .post-card .post-category {
            display: inline-block;
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 10px;
            align-self: flex-start;
        }

        .post-card .post-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.5;
            margin: 0 0 8px;
            color: var(--text);
        }

        .post-card .post-title a {
            color: inherit;
            text-decoration: none;
        }

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

        .post-card .post-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0 0 16px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .post-card .post-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: auto;
            padding-top: 12px;
            border-top: 1px solid var(--border);
        }

        /* ============ Article Footer Nav ============ */
        .article-footer-nav {
            padding: 48px 0;
            background-color: var(--bg);
        }

        .footer-nav-inner {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 16px;
        }

        .footer-nav-inner .back-link {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text-secondary);
        }

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

        .footer-nav-inner .prev-next {
            display: flex;
            gap: 24px;
        }

        .footer-nav-inner .prev-next a {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
            color: var(--text-secondary);
        }

        .footer-nav-inner .prev-next a:hover {
            color: var(--primary);
        }

        /* ============ Not Found ============ */
        .not-found-section {
            padding: 80px 0;
            text-align: center;
            background-color: var(--bg);
        }

        .not-found-section h1 {
            font-size: 32px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 16px;
        }

        .not-found-section p {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        /* ============ Footer ============ */
        .site-footer {
            background-color: #1F2933;
            color: rgba(255,255,255,0.7);
            padding: 64px 0 24px;
        }

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

        .footer-brand .logo {
            margin-bottom: 16px;
        }

        .footer-brand .logo-icon {
            background: var(--primary);
            color: #fff;
        }

        .footer-brand .logo-text {
            color: #fff;
        }

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

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            max-width: 300px;
        }

        .footer-col h4 {
            font-size: 16px;
            font-weight: 700;
            color: #fff;
            margin: 0 0 16px;
        }

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

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

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.5);
        }

        .footer-bottom a {
            color: rgba(255,255,255,0.7);
        }

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

        /* ============ Mobile Menu Overlay ============ */
        .mobile-overlay {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            width: 100%;
            height: calc(100vh - 68px);
            background: rgba(31,41,51,0.98);
            z-index: 99;
            padding: 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }

        .mobile-overlay.active {
            display: flex;
        }

        .mobile-overlay a {
            color: #fff;
            font-size: 18px;
            font-weight: 500;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255,255,255,0.1);
        }

        .mobile-overlay a:hover,
        .mobile-overlay a.active {
            color: var(--primary);
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .post-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 32px;
            }
        }

        @media (max-width: 768px) {
            .header-inner {
                height: 60px;
            }
            .logo-text {
                font-size: 16px;
            }
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-overlay {
                top: 60px;
                height: calc(100vh - 60px);
            }
            .article-head .article-title {
                font-size: 26px;
                line-height: 1.4;
            }
            .article-body {
                padding: 24px 20px;
            }
            .article-body h2 {
                font-size: 22px;
            }
            .article-body h3 {
                font-size: 19px;
            }
            .post-grid {
                grid-template-columns: 1fr;
            }
            .resource-card {
                flex-direction: column;
                align-items: flex-start;
            }
            .resource-card .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-nav-inner {
                flex-direction: column;
                align-items: flex-start;
            }
            .footer-nav-inner .prev-next {
                flex-direction: column;
                gap: 12px;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 16px;
            }
            .article-head {
                padding: 32px 0 16px;
            }
            .article-head .article-title {
                font-size: 22px;
            }
            .article-meta {
                gap: 8px;
                font-size: 13px;
            }
            .article-body-section {
                padding: 16px 0 32px;
            }
            .article-body {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-body h2 {
                font-size: 20px;
            }
            .article-body h3 {
                font-size: 18px;
            }
            .related-section {
                padding: 32px 0;
            }
            .post-card .post-body {
                padding: 16px;
            }
            .footer-nav-inner {
                padding: 0;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #D9480F;
            --primary-hover: #BC3F0C;
            --primary-light: #FDE8DD;
            --secondary: #2F9E44;
            --secondary-hover: #22853A;
            --secondary-light: #E4F5E8;
            --bg: #F7F4ED;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-secondary: #5B6673;
            --text-muted: #8B95A1;
            --border: #E5DED3;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.05);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.06);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Source Han Sans SC", "Alibaba PuHuiTi", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Source Code Pro", monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --container: 1200px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
        }

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

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

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

        button,
        input,
        select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(247, 244, 237, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }

        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(31, 41, 51, 0.08);
        }

        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: var(--spacing-lg);
        }

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

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }

        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }

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

        .nav-desktop {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }

        .nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }

        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width var(--transition);
        }

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

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

        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 700;
        }

        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }

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

        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }

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

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

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: rgba(31, 41, 51, 0.98);
            z-index: 99;
            padding: var(--spacing-2xl) var(--spacing-lg);
            flex-direction: column;
            gap: var(--spacing-lg);
        }

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

        .mobile-menu a {
            font-size: 20px;
            font-weight: 600;
            color: #fff;
            padding: var(--spacing-sm) 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            transition: color var(--transition), padding-left var(--transition);
        }

        .mobile-menu a:hover,
        .mobile-menu a.active {
            color: #FDE8DD;
            padding-left: var(--spacing-sm);
        }

        /* ============ Page Banner ============ */
        .page-banner {
            background-color: var(--primary-light);
            background-image: linear-gradient(rgba(217, 72, 15, 0.05) 1px, transparent 1px),
                linear-gradient(90deg, rgba(217, 72, 15, 0.05) 1px, transparent 1px);
            background-size: 32px 32px;
            padding: var(--spacing-2xl) 0 var(--spacing-3xl);
            position: relative;
            overflow: hidden;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            top: -80px;
            right: 10%;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(217, 72, 15, 0.07);
            pointer-events: none;
        }

        .page-banner::after {
            content: '';
            position: absolute;
            bottom: -100px;
            left: 15%;
            width: 250px;
            height: 250px;
            border-radius: 50%;
            background: rgba(47, 158, 68, 0.07);
            pointer-events: none;
        }

        .breadcrumb-nav {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            font-size: 14px;
            color: var(--text-muted);
            margin-bottom: var(--spacing-lg);
            position: relative;
            z-index: 1;
            flex-wrap: wrap;
        }

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

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

        .breadcrumb-nav .separator {
            color: var(--text-muted);
            font-size: 12px;
        }

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

        .page-banner h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 40px;
            color: var(--text);
            margin-bottom: var(--spacing-md);
            position: relative;
            z-index: 1;
            letter-spacing: -0.5px;
        }

        .page-banner h1 span {
            color: var(--primary);
        }

        .page-banner .banner-sub {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
            position: relative;
            z-index: 1;
        }

        /* ============ Section Base ============ */
        section {
            padding: var(--spacing-3xl) 0;
        }

        section.alt-bg {
            background-color: #F0EBE2;
        }

        .section-head {
            display: flex;
            align-items: flex-end;
            justify-content: space-between;
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-2xl);
            flex-wrap: wrap;
        }

        .section-head h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 34px;
            color: var(--text);
            margin: 0;
            letter-spacing: -0.3px;
        }

        .section-head h2 span {
            color: var(--primary);
        }

        .section-head .sub-text {
            font-size: 15px;
            color: var(--text-muted);
            max-width: 460px;
            line-height: 1.6;
        }

        .section-head-left {
            flex: 1;
            min-width: 260px;
        }

        .section-head-left h2 {
            margin-bottom: var(--spacing-sm);
        }

        .section-head-left .section-desc {
            font-size: 15px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.7;
        }

        /* ============ Stats Bar ============ */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
            gap: var(--spacing-lg);
            margin-bottom: var(--spacing-2xl);
        }

        .stat-item {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .stat-item .stat-icon {
            width: 48px;
            height: 48px;
            margin: 0 auto var(--spacing-sm);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            color: #fff;
            background: var(--primary);
            flex-shrink: 0;
        }

        .stat-item:nth-child(2) .stat-icon {
            background: var(--secondary);
        }

        .stat-item:nth-child(3) .stat-icon {
            background: #5B6673;
        }

        .stat-item:nth-child(4) .stat-icon {
            background: #E8590C;
        }

        .stat-item .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--text);
            line-height: 1.2;
            margin-bottom: var(--spacing-xs);
        }

        .stat-item .stat-label {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.5;
        }

        /* ============ Resource Cards ============ */
        .resource-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: var(--spacing-lg);
        }

        .resource-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
        }

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

        .resource-card .card-thumb {
            position: relative;
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--primary-light);
        }

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

        .resource-card:hover .card-thumb img {
            transform: scale(1.04);
        }

        .resource-card .card-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.9);
            color: var(--primary);
            font-size: 12px;
            font-weight: 600;
            padding: 4px 12px;
            border-radius: 20px;
            letter-spacing: 0.3px;
            backdrop-filter: blur(4px);
        }

        .resource-card .card-badge.green {
            color: var(--secondary);
        }

        .resource-card .card-body {
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .resource-card .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: var(--spacing-sm);
            line-height: 1.4;
            transition: color var(--transition);
        }

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

        .resource-card .card-summary {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: var(--spacing-md);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            flex: 1;
        }

        .resource-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-muted);
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border);
        }

        .resource-card .card-meta .meta-left {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }

        .resource-card .card-meta .meta-tag {
            background: var(--primary-light);
            color: var(--primary);
            padding: 2px 10px;
            border-radius: 12px;
            font-weight: 500;
        }

        /* ============ Filter Bar ============ */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
            align-items: center;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: var(--spacing-md) var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            margin-bottom: var(--spacing-2xl);
        }

        .filter-bar .filter-group {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .filter-bar .filter-label {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            white-space: nowrap;
        }

        .filter-bar select {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 8px 14px;
            font-size: 14px;
            color: var(--text);
            cursor: pointer;
            min-width: 130px;
            transition: border-color var(--transition), box-shadow var(--transition);
        }

        .filter-bar select:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(217, 72, 15, 0.1);
        }

        .filter-bar .filter-spacer {
            flex: 1;
        }

        .filter-bar .sort-btns {
            display: flex;
            gap: var(--spacing-sm);
            flex-wrap: wrap;
        }

        .filter-bar .sort-btn {
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            border-radius: 20px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .filter-bar .sort-btn:hover,
        .filter-bar .sort-btn.active {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }

        /* ============ Horizontal Scroll ============ */
        .hscroll-section {
            overflow: hidden;
        }

        .hscroll-container {
            display: flex;
            gap: var(--spacing-lg);
            overflow-x: auto;
            padding-bottom: var(--spacing-md);
            scroll-snap-type: x mandatory;
            -webkit-overflow-scrolling: touch;
            scrollbar-width: thin;
            scrollbar-color: var(--border) transparent;
        }

        .hscroll-container::-webkit-scrollbar {
            height: 4px;
        }

        .hscroll-container::-webkit-scrollbar-thumb {
            background: var(--border);
            border-radius: 2px;
        }

        .hscroll-card {
            flex: 0 0 280px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
            scroll-snap-align: start;
        }

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

        .hscroll-card .hscroll-thumb {
            width: 100%;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: var(--primary-light);
        }

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

        .hscroll-card:hover .hscroll-thumb img {
            transform: scale(1.04);
        }

        .hscroll-card .hscroll-body {
            padding: var(--spacing-md);
        }

        .hscroll-card .hscroll-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: var(--spacing-xs);
            line-height: 1.4;
            transition: color var(--transition);
        }

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

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

        /* ============ Notice Card ============ */
        .notice-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            display: flex;
            gap: var(--spacing-xl);
            align-items: flex-start;
        }

        .notice-card .notice-icon {
            width: 56px;
            height: 56px;
            background: var(--secondary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            flex-shrink: 0;
            color: var(--secondary);
        }

        .notice-card .notice-content h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
            color: var(--text);
        }

        .notice-card .notice-content p {
            font-size: 15px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
            line-height: 1.7;
        }

        .notice-card .notice-content p:last-child {
            margin-bottom: 0;
        }

        .notice-card .notice-list {
            list-style: none;
            padding: 0;
            margin: var(--spacing-sm) 0 0;
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }

        .notice-card .notice-list li {
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 6px;
        }

        .notice-card .notice-list li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: 700;
        }

        /* ============ Tag Cloud ============ */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-sm);
        }

        .tag-cloud a {
            display: inline-block;
            padding: 8px 18px;
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: 20px;
            font-size: 14px;
            color: var(--text-secondary);
            transition: all var(--transition);
        }

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

        /* ============ CTA Button ============ */
        .btn-primary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            transition: all var(--transition);
            border: 2px solid var(--primary);
            letter-spacing: 0.3px;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            box-shadow: 0 4px 16px rgba(217, 72, 15, 0.3);
            transform: translateY(-2px);
        }

        .btn-primary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-secondary {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: transparent;
            color: var(--primary);
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            transition: all var(--transition);
            border: 2px solid var(--primary);
            letter-spacing: 0.3px;
        }

        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            box-shadow: 0 4px 16px rgba(217, 72, 15, 0.25);
            transform: translateY(-2px);
        }

        .btn-secondary:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .btn-green {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 28px;
            background: var(--secondary);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: 10px;
            transition: all var(--transition);
            border: 2px solid var(--secondary);
            letter-spacing: 0.3px;
        }

        .btn-green:hover {
            background: var(--secondary-hover);
            border-color: var(--secondary-hover);
            color: #fff;
            box-shadow: 0 4px 16px rgba(47, 158, 68, 0.3);
            transform: translateY(-2px);
        }

        .more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 15px;
            font-weight: 600;
            color: var(--primary);
            padding: 10px 0;
            transition: all var(--transition);
        }

        .more-link:hover {
            color: var(--primary-hover);
            gap: 10px;
        }

        .more-link .arrow {
            font-size: 18px;
            transition: transform var(--transition);
        }

        .more-link:hover .arrow {
            transform: translateX(3px);
        }

        /* ============ Bottom CTA ============ */
        .bottom-cta {
            background: var(--primary);
            background-image: linear-gradient(135deg, #D9480F 0%, #BC3F0C 100%);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl) var(--spacing-xl);
            text-align: center;
            color: #fff;
        }

        .bottom-cta h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.3px;
        }

        .bottom-cta p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: var(--spacing-lg);
            max-width: 520px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }

        .bottom-cta .btn-white {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 32px;
            background: #fff;
            color: var(--primary);
            font-size: 15px;
            font-weight: 700;
            border-radius: 10px;
            transition: all var(--transition);
        }

        .bottom-cta .btn-white:hover {
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
            transform: translateY(-2px);
            color: var(--primary-hover);
        }

        /* ============ Empty State ============ */
        .empty-state {
            text-align: center;
            padding: var(--spacing-3xl) var(--spacing-lg);
            background: var(--surface);
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
            color: var(--text-muted);
            font-size: 15px;
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #1F2933;
            color: rgba(255, 255, 255, 0.75);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
            margin-top: var(--spacing-3xl);
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            margin-bottom: var(--spacing-2xl);
        }

        .footer-brand .logo {
            margin-bottom: var(--spacing-md);
        }

        .footer-brand .logo .logo-icon {
            background: var(--primary);
        }

        .footer-brand .logo .logo-text {
            color: #fff;
        }

        .footer-brand .logo .logo-text span {
            color: #FDE8DD;
        }

        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 280px;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.3px;
        }

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

        .footer-col ul li {
            margin-bottom: var(--spacing-sm);
        }

        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
        }

        .footer-col ul li a:hover {
            color: #FDE8DD;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: var(--spacing-lg);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }

        .footer-bottom a {
            color: rgba(255, 255, 255, 0.6);
            transition: color var(--transition);
        }

        .footer-bottom a:hover {
            color: #FDE8DD;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-xl);
            }
        }

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

            .hamburger {
                display: flex;
            }

            .page-banner {
                padding: var(--spacing-xl) 0 var(--spacing-2xl);
            }

            .page-banner h1 {
                font-size: 26px;
                line-height: 34px;
            }

            .section {
                padding: 40px 0;
            }

            .section-head {
                flex-direction: column;
                align-items: flex-start;
                gap: var(--spacing-sm);
                margin-bottom: var(--spacing-xl);
            }

            .section-head h2 {
                font-size: 22px;
                line-height: 30px;
            }

            .notice-card {
                flex-direction: column;
                gap: var(--spacing-md);
                padding: var(--spacing-lg);
            }

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

            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }

            .filter-bar .filter-spacer {
                display: none;
            }

            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-md);
            }

            .hscroll-card {
                flex: 0 0 240px;
            }

            .bottom-cta {
                padding: var(--spacing-xl) var(--spacing-lg);
            }

            .bottom-cta h2 {
                font-size: 22px;
                line-height: 30px;
            }
        }

        @media (max-width: 576px) {
            .container {
                padding: 0 var(--spacing-md);
            }

            .header-inner {
                height: 60px;
            }

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

            .logo-text {
                font-size: 16px;
            }

            .mobile-menu {
                top: 60px;
                padding: var(--spacing-xl) var(--spacing-md);
            }

            .page-banner h1 {
                font-size: 22px;
                line-height: 30px;
            }

            .stats-bar {
                grid-template-columns: 1fr;
            }

            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-lg);
            }

            .section-head h2 {
                font-size: 20px;
                line-height: 28px;
            }

            .resource-card .card-title {
                font-size: 16px;
            }

            .hscroll-card {
                flex: 0 0 200px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #D9480F;
            --primary-hover: #BC3F0C;
            --primary-light: #FDE8DD;
            --secondary: #2F9E44;
            --secondary-hover: #22853A;
            --secondary-light: #E4F5E8;
            --bg: #F7F4ED;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-secondary: #5B6673;
            --text-muted: #8B95A1;
            --border: #E5DED3;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.05);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.06);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Source Han Sans SC", "Alibaba PuHuiTi", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Source Code Pro", monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --container: 1200px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }
        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--primary);
        }
        button, input, select {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        .container {
            max-width: var(--container);
            margin: 0 auto;
            padding: 0 var(--spacing-lg);
        }
        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(247, 244, 237, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(31, 41, 51, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: var(--spacing-lg);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }
        .nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--primary);
        }
        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--primary-light);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            flex-direction: column;
            padding: var(--spacing-md) var(--spacing-lg);
            background: rgba(247, 244, 237, 0.98);
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu a {
            padding: 12px 0;
            font-size: 16px;
            color: var(--text-secondary);
            border-bottom: 1px solid var(--border);
        }
        .mobile-menu a:last-child {
            border-bottom: none;
        }
        .mobile-menu a.active {
            color: var(--primary);
            font-weight: 700;
        }
        /* ============ Buttons ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 12px 24px;
            border-radius: 10px;
            font-weight: 600;
            font-size: 15px;
            transition: all var(--transition);
            border: none;
            cursor: pointer;
            gap: 8px;
        }
        .btn-primary {
            background-color: var(--primary);
            color: #fff;
            box-shadow: 0 2px 8px rgba(217, 72, 15, 0.2);
        }
        .btn-primary:hover {
            background-color: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 16px rgba(217, 72, 15, 0.28);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border: 1.5px solid var(--secondary);
        }
        .btn-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary-hover);
            border-color: var(--secondary-hover);
        }
        .btn-outline-orange {
            background: transparent;
            color: var(--primary);
            border: 1.5px solid var(--primary);
        }
        .btn-outline-orange:hover {
            background: var(--primary-light);
            color: var(--primary-hover);
            border-color: var(--primary-hover);
        }
        /* ============ Sections ============ */
        .section {
            padding: var(--spacing-3xl) 0;
        }
        .section-alt {
            background-color: #fff;
        }
        .section-head {
            margin-bottom: var(--spacing-xl);
        }
        .section-title {
            font-size: 26px;
            line-height: 34px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-top: var(--spacing-sm);
            line-height: 1.7;
        }
        /* ============ Category Hero ============ */
        .category-hero {
            background-color: #F7F4ED;
            background-image: radial-gradient(rgba(217, 72, 15, 0.05) 1px, transparent 1px);
            background-size: 24px 24px;
            padding: var(--spacing-3xl) 0;
            border-bottom: 1px solid var(--border);
        }
        .category-hero .container {
            display: flex;
            flex-direction: column;
            gap: var(--spacing-lg);
        }
        .category-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 6px 14px;
            font-size: 13px;
            font-weight: 600;
            width: fit-content;
        }
        .category-hero h1 {
            font-size: 32px;
            line-height: 40px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.5px;
            max-width: 800px;
        }
        .category-hero .subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.7;
        }
        /* ============ Filter Chips ============ */
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            align-items: center;
            background: var(--surface);
            padding: 12px 16px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-sm);
        }
        .filter-label {
            font-weight: 600;
            color: var(--text-secondary);
            font-size: 14px;
        }
        .filter-chip {
            padding: 8px 16px;
            border-radius: 999px;
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            font-size: 14px;
            transition: all var(--transition);
            cursor: pointer;
        }
        .filter-chip:hover,
        .filter-chip.active {
            background: var(--primary-light);
            color: var(--primary);
            border-color: var(--primary);
        }
        /* ============ Tutorial Grid ============ */
        .tutorial-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .tutorial-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            display: flex;
            flex-direction: column;
        }
        .tutorial-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card-cover {
            position: relative;
            aspect-ratio: 16/9;
            overflow: hidden;
            background: #f0ede7;
        }
        .card-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 0;
        }
        .step-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(31,41,51,0.82);
            color: #fff;
            padding: 4px 10px;
            border-radius: 999px;
            font-size: 12px;
            font-weight: 600;
            backdrop-filter: blur(4px);
        }
        .card-body {
            padding: var(--spacing-lg);
            display: flex;
            flex-direction: column;
            gap: var(--spacing-sm);
            flex: 1;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            line-height: 1.4;
            color: var(--text);
        }
        .card-title a:hover {
            color: var(--primary);
        }
        .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            min-height: 48px;
        }
        .card-meta {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            align-items: center;
            font-size: 12px;
            color: var(--text-muted);
            margin-top: auto;
            padding-top: var(--spacing-sm);
            border-top: 1px solid var(--border);
        }
        .badge-soft {
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 999px;
            padding: 2px 10px;
            font-size: 12px;
            font-weight: 600;
        }
        /* ============ Issue Cards ============ */
        .issues-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: var(--spacing-lg);
        }
        .issue-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        .issue-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .issue-icon {
            width: 48px;
            height: 48px;
            border-radius: var(--radius-md);
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 22px;
            margin-bottom: var(--spacing-md);
        }
        .issue-card h3 {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }
        .issue-card p {
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.7;
        }
        /* ============ Tool Cards ============ */
        .tool-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
        }
        .tool-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-sm);
            text-align: center;
            transition: all var(--transition);
        }
        .tool-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
            border-color: var(--primary-light);
        }
        .tool-icon {
            width: 56px;
            height: 56px;
            background: var(--secondary-light);
            color: var(--secondary);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 26px;
            margin: 0 auto var(--spacing-md);
        }
        .tool-card h4 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 6px;
        }
        .tool-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        /* ============ Expert Tips ============ */
        .tiplist {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-sm);
        }
        .tiplist-item {
            display: flex;
            gap: var(--spacing-md);
            padding: var(--spacing-md) 0;
            border-bottom: 1px solid var(--border);
        }
        .tiplist-item:last-child {
            border-bottom: none;
        }
        .tip-check {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--secondary-light);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 16px;
        }
        .tip-text {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .tip-text strong {
            color: var(--text);
        }
        /* ============ CTA Bar ============ */
        .cta-bar {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: var(--spacing-2xl);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: var(--spacing-lg);
            flex-wrap: wrap;
        }
        .cta-bar-text h2 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 6px;
        }
        .cta-bar-text p {
            color: var(--text-secondary);
            margin: 0;
        }
        /* ============ Footer ============ */
        .site-footer {
            background-color: #1F2933;
            color: rgba(255,255,255,0.75);
            padding: var(--spacing-3xl) 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: var(--spacing-xl);
            padding-bottom: var(--spacing-2xl);
        }
        .footer-brand .logo {
            margin-bottom: var(--spacing-md);
        }
        .footer-brand .logo-icon {
            background: var(--primary);
        }
        .footer-brand .logo-text {
            color: #fff;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.6);
            max-width: 320px;
        }
        .footer-col h4 {
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            margin-bottom: var(--spacing-md);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col li {
            margin-bottom: 10px;
        }
        .footer-col a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            transition: color var(--transition);
        }
        .footer-col a:hover {
            color: var(--primary);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.1);
            padding: var(--spacing-lg) 0;
            text-align: center;
            font-size: 13px;
            color: rgba(255,255,255,0.55);
        }
        .footer-bottom a {
            color: rgba(255,255,255,0.7);
        }
        .footer-bottom a:hover {
            color: var(--primary);
        }
        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .tutorial-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .tool-grid {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .mobile-menu.active {
                display: flex;
            }
            .section {
                padding: var(--spacing-2xl) 0;
            }
            .category-hero {
                padding: var(--spacing-2xl) 0;
            }
            .category-hero h1 {
                font-size: 26px;
                line-height: 34px;
            }
            .issues-grid {
                grid-template-columns: 1fr;
            }
            .tool-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: var(--spacing-lg);
            }
            .footer-brand {
                grid-column: span 2;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }
            .tutorial-grid {
                grid-template-columns: 1fr;
            }
            .cta-bar {
                flex-direction: column;
                align-items: stretch;
                text-align: center;
            }
            .cta-bar .btn {
                width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
            }
            .footer-brand {
                grid-column: span 1;
            }
            .filter-bar {
                flex-direction: column;
                align-items: stretch;
            }
            .filter-chip {
                text-align: center;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #D9480F;
            --primary-hover: #BC3F0C;
            --primary-light: #FDE8DD;
            --secondary: #2F9E44;
            --secondary-hover: #22853A;
            --secondary-light: #E4F5E8;
            --bg: #F7F4ED;
            --surface: #FFFFFF;
            --text: #1F2933;
            --text-secondary: #5B6673;
            --text-muted: #8B95A1;
            --border: #E5DED3;
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --radius-xl: 20px;
            --shadow-sm: 0 1px 3px rgba(31, 41, 51, 0.05);
            --shadow-md: 0 4px 16px rgba(31, 41, 51, 0.06);
            --shadow-lg: 0 12px 32px rgba(31, 41, 51, 0.12);
            --font-sans: "Source Han Sans SC", "Alibaba PuHuiTi", "Noto Sans SC", -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
            --font-mono: "SF Mono", "Cascadia Code", "Consolas", "Source Code Pro", monospace;
            --spacing-xs: 4px;
            --spacing-sm: 8px;
            --spacing-md: 16px;
            --spacing-lg: 24px;
            --spacing-xl: 32px;
            --spacing-2xl: 48px;
            --spacing-3xl: 64px;
            --spacing-4xl: 80px;
            --container: 1200px;
            --transition: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
        }

        html {
            scroll-behavior: smooth;
            font-size: 16px;
            -webkit-text-size-adjust: 100%;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

        body {
            font-family: var(--font-sans);
            font-size: 16px;
            line-height: 1.7;
            color: var(--text);
            background-color: var(--bg);
            min-height: 100vh;
            overflow-x: hidden;
        }

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

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

        button, input, select, textarea {
            font-family: inherit;
            font-size: inherit;
            line-height: inherit;
            border: none;
            outline: none;
            background: none;
        }
        button {
            cursor: pointer;
        }

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

        /* ============ Header / Navigation ============ */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 100;
            background-color: rgba(247, 244, 237, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-bottom: 1px solid var(--border);
            transition: box-shadow var(--transition);
        }
        .site-header.scrolled {
            box-shadow: 0 4px 16px rgba(31, 41, 51, 0.08);
        }
        .header-inner {
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 68px;
            gap: var(--spacing-lg);
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-shrink: 0;
        }
        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            border-radius: var(--radius-sm);
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-weight: 700;
            font-size: 18px;
            letter-spacing: -0.5px;
        }
        .logo-text {
            font-size: 18px;
            font-weight: 700;
            color: var(--text);
            letter-spacing: -0.3px;
        }
        .logo-text span {
            color: var(--primary);
        }
        .nav-desktop {
            display: flex;
            align-items: center;
            gap: var(--spacing-lg);
        }
        .nav-desktop a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-secondary);
            padding: 4px 0;
            position: relative;
            white-space: nowrap;
            transition: color var(--transition);
        }
        .nav-desktop a::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--primary);
            border-radius: 1px;
            transition: width var(--transition);
        }
        .nav-desktop a:hover {
            color: var(--primary);
        }
        .nav-desktop a:hover::after,
        .nav-desktop a.active::after {
            width: 100%;
        }
        .nav-desktop a.active {
            color: var(--primary);
            font-weight: 700;
        }
        .hamburger {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 8px;
            cursor: pointer;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .hamburger:hover {
            background: var(--primary-light);
        }
        .hamburger span {
            display: block;
            width: 22px;
            height: 2.5px;
            background: var(--text);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .hamburger.active span:nth-child(1) {
            transform: translateY(7.5px) rotate(45deg);
        }
        .hamburger.active span:nth-child(2) {
            opacity: 0;
        }
        .hamburger.active span:nth-child(3) {
            transform: translateY(-7.5px) rotate(-45deg);
        }

        .mobile-nav {
            display: none;
            position: fixed;
            top: 68px;
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--bg);
            z-index: 99;
            padding: var(--spacing-xl) var(--spacing-lg);
            flex-direction: column;
            gap: var(--spacing-md);
            overflow-y: auto;
        }
        .mobile-nav.open {
            display: flex;
        }
        .mobile-nav a {
            font-size: 20px;
            font-weight: 600;
            color: var(--text);
            padding: var(--spacing-md) 0;
            border-bottom: 1px solid var(--border);
        }
        .mobile-nav a.active {
            color: var(--primary);
        }

        /* ============ Common Section Styles ============ */
        .section-pad {
            padding: var(--spacing-3xl) 0;
        }
        .section-pad-sm {
            padding: var(--spacing-2xl) 0;
        }
        .section-alt {
            background: var(--surface);
        }
        .section-title {
            font-size: 26px;
            font-weight: 700;
            line-height: 34px;
            color: var(--text);
            margin-bottom: var(--spacing-sm);
            letter-spacing: -0.2px;
        }
        .section-sub {
            font-size: 16px;
            line-height: 28px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-xl);
            max-width: 720px;
        }
        .eyebrow {
            display: inline-block;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            background: var(--primary-light);
            padding: 4px 12px;
            border-radius: 20px;
            margin-bottom: var(--spacing-md);
            letter-spacing: 0.3px;
        }

        /* ============ Buttons ============ */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            font-weight: 600;
            font-size: 15px;
            border-radius: 10px;
            padding: 12px 24px;
            transition: all var(--transition);
            border: 2px solid transparent;
            line-height: 1.4;
            text-align: center;
        }
        .btn:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 3px;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            border-color: var(--primary);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            border-color: var(--primary-hover);
            color: #fff;
            box-shadow: 0 6px 16px rgba(217, 72, 15, 0.25);
            transform: translateY(-1px);
        }
        .btn-outline {
            background: transparent;
            color: var(--secondary);
            border-color: var(--secondary);
        }
        .btn-outline:hover {
            background: var(--secondary-light);
            color: var(--secondary-hover);
            border-color: var(--secondary-hover);
            transform: translateY(-1px);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }

        /* ============ Cards ============ */
        .card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            box-shadow: var(--shadow-md);
            transition: all var(--transition);
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .card h3 {
            font-size: 18px;
            font-weight: 600;
            line-height: 28px;
            margin-bottom: var(--spacing-sm);
            color: var(--text);
        }
        .card p {
            font-size: 14px;
            line-height: 24px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-md);
        }

        /* ============ Badge ============ */
        .badge {
            display: inline-block;
            font-size: 12px;
            font-weight: 500;
            padding: 3px 10px;
            border-radius: 6px;
            background: var(--primary-light);
            color: var(--primary);
            letter-spacing: 0.2px;
        }
        .badge-green {
            background: var(--secondary-light);
            color: var(--secondary);
        }
        .badge-outline {
            background: transparent;
            border: 1px solid var(--border);
            color: var(--text-secondary);
        }

        /* ============ Category Hero ============ */
        .category-hero {
            padding: var(--spacing-3xl) 0 var(--spacing-2xl);
            background: var(--bg);
            position: relative;
            overflow: hidden;
        }
        .category-hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 480px;
            height: 480px;
            background: radial-gradient(circle, rgba(217, 72, 15, 0.06) 0%, transparent 70%);
            pointer-events: none;
        }
        .hero-grid {
            display: grid;
            grid-template-columns: 1.2fr 1fr;
            gap: var(--spacing-2xl);
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .hero-content .eyebrow {
            margin-bottom: var(--spacing-md);
        }
        .hero-content h1 {
            font-size: 32px;
            font-weight: 700;
            line-height: 42px;
            color: var(--text);
            margin-bottom: var(--spacing-md);
            letter-spacing: -0.5px;
        }
        .hero-sub {
            font-size: 16px;
            line-height: 28px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-xl);
            max-width: 520px;
        }
        .hero-actions {
            display: flex;
            flex-wrap: wrap;
            gap: var(--spacing-md);
        }
        .hero-visual {
            border-radius: var(--radius-xl);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            background: var(--surface);
            border: 1px solid var(--border);
        }
        .hero-visual img {
            width: 100%;
            height: 300px;
            object-fit: cover;
        }
        .hero-stats {
            display: flex;
            gap: var(--spacing-xl);
            margin-top: var(--spacing-xl);
            flex-wrap: wrap;
        }
        .hero-stat {
            text-align: center;
        }
        .hero-stat .stat-num {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: -0.5px;
        }
        .hero-stat .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }

        /* ============ Troubleshoot List ============ */
        .troubleshoot-list {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .issue-card {
            display: flex;
            gap: var(--spacing-lg);
            padding: var(--spacing-lg);
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: var(--spacing-md);
            transition: all var(--transition);
        }
        .issue-card:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .issue-card-icon {
            flex-shrink: 0;
            width: 44px;
            height: 44px;
            background: var(--primary-light);
            border-radius: var(--radius-md);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }
        .issue-card-content {
            flex: 1;
        }
        .issue-card-content h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 26px;
            margin-bottom: 6px;
        }
        .issue-card-content h3 a:hover {
            color: var(--primary);
        }
        .issue-card-content p {
            font-size: 14px;
            line-height: 22px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        .issue-meta {
            display: flex;
            align-items: center;
            gap: var(--spacing-md);
            flex-wrap: wrap;
            font-size: 12px;
            color: var(--text-muted);
        }
        .issue-meta .badge {
            margin-right: 0;
        }

        /* ============ Steps Section ============ */
        .steps-section {
            background: var(--bg);
        }
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }
        .step-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            text-align: center;
            position: relative;
            transition: all var(--transition);
        }
        .step-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-number {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
            margin: 0 auto var(--spacing-md);
        }
        .step-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: var(--spacing-sm);
        }
        .step-card p {
            font-size: 13px;
            line-height: 22px;
            color: var(--text-secondary);
            margin-bottom: 0;
        }

        /* ============ Error Codes Table ============ */
        .error-codes {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .error-table-wrap {
            overflow-x: auto;
            margin-top: var(--spacing-xl);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            background: var(--surface);
        }
        .error-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
            min-width: 720px;
        }
        .error-table th {
            background: var(--bg);
            font-weight: 700;
            font-size: 13px;
            color: var(--text);
            text-align: left;
            padding: var(--spacing-md) var(--spacing-lg);
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        .error-table td {
            padding: var(--spacing-md) var(--spacing-lg);
            border-bottom: 1px solid var(--border);
            color: var(--text-secondary);
            vertical-align: top;
        }
        .error-table tr:last-child td {
            border-bottom: none;
        }
        .error-table tr:hover td {
            background: rgba(247, 244, 237, 0.5);
        }
        .error-code-text {
            font-family: var(--font-mono);
            font-weight: 600;
            color: var(--text);
            font-size: 13px;
        }

        /* ============ Support CTA ============ */
        .support-cta {
            background: var(--bg);
        }
        .support-wrapper {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: var(--spacing-2xl);
            align-items: center;
        }
        .support-info h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 34px;
            margin-bottom: var(--spacing-md);
        }
        .support-info p {
            font-size: 15px;
            line-height: 26px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-lg);
        }
        .support-features {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .support-features li {
            display: flex;
            align-items: flex-start;
            gap: var(--spacing-sm);
            font-size: 14px;
            color: var(--text-secondary);
            padding: var(--spacing-sm) 0;
        }
        .support-features li::before {
            content: '✓';
            color: var(--secondary);
            font-weight: 700;
            flex-shrink: 0;
        }
        .support-form-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-xl);
            padding: var(--spacing-xl);
            box-shadow: var(--shadow-md);
        }
        .form-label {
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            display: block;
        }
        .form-control {
            width: 100%;
            height: 44px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0 var(--spacing-md);
            font-size: 14px;
            color: var(--text);
            background: #fff;
            transition: all var(--transition);
            margin-bottom: var(--spacing-md);
        }
        .form-control:focus {
            border-color: var(--primary);
            box-shadow: 0 0 0 3px rgba(217, 72, 15, 0.12);
        }
        textarea.form-control {
            height: auto;
            min-height: 100px;
            padding: var(--spacing-md);
            resize: vertical;
        }
        select.form-control {
            appearance: none;
            -webkit-appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath fill='%235B6673' d='M6 8L0 0h12z'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 14px center;
            padding-right: 36px;
        }
        .form-hint {
            font-size: 12px;
            color: var(--text-muted);
            margin-top: -8px;
            margin-bottom: var(--spacing-md);
            display: block;
        }

        /* ============ Community Feedback ============ */
        .community-feedback {
            background: var(--surface);
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
        }
        .feedback-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
        }
        .feedback-card {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: var(--spacing-lg);
            transition: all var(--transition);
        }
        .feedback-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .feedback-card .quote {
            font-size: 14px;
            line-height: 24px;
            color: var(--text-secondary);
            font-style: italic;
            margin-bottom: var(--spacing-md);
        }
        .feedback-user {
            display: flex;
            align-items: center;
            gap: var(--spacing-sm);
        }
        .feedback-avatar {
            width: 32px;
            height: 32px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 14px;
            color: var(--primary);
        }
        .feedback-user-info {
            font-size: 13px;
            color: var(--text-secondary);
        }
        .feedback-user-info .name {
            font-weight: 600;
            color: var(--text);
        }

        /* ============ Related Resources ============ */
        .related-resources {
            background: var(--bg);
        }
        .resources-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: var(--spacing-lg);
            margin-top: var(--spacing-xl);
        }
        .resource-card {
            background: var(--surface);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: all var(--transition);
        }
        .resource-card:hover {
            box-shadow: var(--shadow-lg);
            transform: translateY(-4px);
        }
        .resource-card img {
            width: 100%;
            height: 160px;
            object-fit: cover;
        }
        .resource-card-body {
            padding: var(--spacing-md) var(--spacing-lg) var(--spacing-lg);
        }
        .resource-card-body h3 {
            font-size: 16px;
            font-weight: 600;
            line-height: 24px;
            margin-bottom: 6px;
        }
        .resource-card-body p {
            font-size: 13px;
            line-height: 22px;
            color: var(--text-secondary);
            margin-bottom: var(--spacing-sm);
        }
        .view-more-link {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            margin-top: var(--spacing-md);
            transition: color var(--transition);
        }
        .view-more-link:hover {
            color: var(--primary-hover);
        }

        /* ============ Footer ============ */
        .site-footer {
            background: #1F2933;
            color: rgba(255, 255, 255, 0.72);
            padding: var(--spacing-3xl) 0 var(--spacing-lg);
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.6fr 1fr 1fr 1fr;
            gap: var(--spacing-2xl);
            padding-bottom: var(--spacing-2xl);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 24px;
            margin-top: var(--spacing-md);
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 700;
            color: #fff;
            margin-bottom: var(--spacing-md);
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: var(--spacing-sm);
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.62);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            padding-top: var(--spacing-lg);
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.45);
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.62);
            text-decoration: underline;
        }
        .footer-bottom a:hover {
            color: #fff;
        }

        /* ============ Responsive ============ */
        @media (max-width: 1024px) {
            .hero-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
            .hero-visual img {
                height: 260px;
            }
            .steps-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .feedback-grid {
                grid-template-columns: 1fr;
            }
            .resources-grid {
                grid-template-columns: 1fr;
            }
            .support-wrapper {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop {
                display: none;
            }
            .hamburger {
                display: flex;
            }
            .section-pad {
                padding: var(--spacing-2xl) 0;
            }
            .section-pad-sm {
                padding: var(--spacing-xl) 0;
            }
            .hero-content h1 {
                font-size: 28px;
                line-height: 36px;
            }
            .hero-sub {
                font-size: 15px;
                line-height: 26px;
            }
            .hero-actions {
                flex-direction: column;
            }
            .hero-actions .btn {
                width: 100%;
            }
            .steps-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-md);
            }
            .issue-card {
                flex-direction: column;
                gap: var(--spacing-md);
            }
            .hero-stats {
                gap: var(--spacing-md);
            }
            .hero-stat .stat-num {
                font-size: 24px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: var(--spacing-xl);
            }
        }

        @media (max-width: 520px) {
            .container {
                padding: 0 var(--spacing-md);
            }
            .logo-text {
                font-size: 16px;
            }
            .hero-content h1 {
                font-size: 24px;
                line-height: 32px;
            }
            .section-title {
                font-size: 22px;
                line-height: 30px;
            }
            .btn {
                font-size: 14px;
                padding: 10px 20px;
            }
            .card {
                padding: var(--spacing-md);
            }
        }