/* roulang page: index */
:root {
            --primary: #1F4D3E;
            --primary-deep: #173a2f;
            --accent: #C9953D;
            --accent-hover: #b08330;
            --copper: #B86E3A;
            --bg: #FAF7F2;
            --bg-alt: #F2EFEA;
            --card-bg: #FFFFFF;
            --text: #2B2B2B;
            --text-secondary: #6B6560;
            --text-light: #FFFFFF;
            --border: #E5DFD6;
            --success: #3E7D5A;
            --radius-lg: 8px;
            --radius-md: 4px;
            --radius-sm: 2px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --header-height: 64px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s ease;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.72;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button, input, textarea, select {
            font-family: var(--font-main);
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        ul, ol {
            list-style: none;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-deep {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-deep .section-title {
            color: var(--text-light);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 680px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .sr-only {
            position: absolute;
            width: 1px;
            height: 1px;
            padding: 0;
            margin: -1px;
            overflow: hidden;
            clip: rect(0,0,0,0);
            white-space: nowrap;
            border: 0;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: var(--accent);
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 0 2px;
            position: relative;
            line-height: 1;
            letter-spacing: 0.4px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            letter-spacing: 0.4px;
        }
        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            background: none;
            border: none;
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--bg-alt);
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--card-bg);
            z-index: 999;
            padding: 32px 24px;
            flex-direction: column;
            gap: 8px;
            overflow-y: auto;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            padding: 16px 0;
            border-bottom: 1px solid var(--border);
            letter-spacing: 0.5px;
        }
        .mobile-menu a:hover {
            color: var(--accent);
        }
        /* Hero */
        .hero {
            position: relative;
            padding-top: calc(var(--header-height) + 60px);
            padding-bottom: 64px;
            background: var(--bg);
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/a220916b371683b7.webp') center / cover no-repeat;
            opacity: 0.06;
            pointer-events: none;
            z-index: 0;
        }
        .hero .container {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 55% 45%;
            gap: 48px;
            align-items: center;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 6px 14px;
            background: rgba(31, 77, 62, 0.08);
            border: 1px solid rgba(31, 77, 62, 0.15);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            margin-bottom: 20px;
            letter-spacing: 0.3px;
        }
        .hero-badge .badge-dot {
            width: 6px;
            height: 6px;
            border-radius: 50%;
            background: var(--accent);
            animation: pulse 2s infinite;
        }
        @keyframes pulse {
            0%, 100% { opacity: 1; transform: scale(1); }
            50% { opacity: 0.5; transform: scale(1.4); }
        }
        .hero h1 {
            font-size: 42px;
            font-weight: 700;
            line-height: 1.25;
            color: var(--text);
            margin-bottom: 18px;
            letter-spacing: 0.8px;
        }
        .hero h1 .highlight {
            color: var(--accent);
            position: relative;
            display: inline-block;
        }
        .hero-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 28px;
            max-width: 540px;
            letter-spacing: 0.3px;
        }
        .hero-actions {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            padding: 14px 30px;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition), border-color var(--transition);
            letter-spacing: 0.4px;
            cursor: pointer;
            border: 2px solid transparent;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--accent);
            color: #fff;
            border-color: var(--accent);
        }
        .btn-primary:hover {
            background: var(--primary);
            border-color: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-secondary {
            background: transparent;
            color: var(--primary);
            border-color: var(--primary);
        }
        .btn-secondary:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-sm);
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
            border-color: #fff;
        }
        .btn-light:hover {
            background: var(--accent);
            border-color: var(--accent);
            color: #fff;
            transform: translateY(-2px);
        }
        .hero-visual {
            position: relative;
            display: flex;
            align-items: center;
            justify-content: center;
            min-height: 360px;
        }
        .hero-visual .hero-img-wrap {
            width: 100%;
            max-width: 420px;
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--border);
            background: var(--card-bg);
        }
        .hero-visual img {
            width: 100%;
            object-fit: cover;
        }
        .hero-visual .float-chip {
            position: absolute;
            padding: 10px 16px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-md);
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            border: 1px solid var(--border);
            letter-spacing: 0.3px;
        }
        .float-chip.top-right {
            top: 20px;
            right: 12px;
        }
        .float-chip.bottom-left {
            bottom: 24px;
            left: 12px;
            color: var(--accent);
        }
        /* Stats Bar */
        .stats-bar {
            background: var(--primary);
            padding: 32px 0;
        }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            text-align: center;
        }
        .stat-item {
            padding: 12px 8px;
        }
        .stat-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
            margin-bottom: 4px;
            letter-spacing: 0.5px;
        }
        .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.5;
            letter-spacing: 0.3px;
        }
        /* Download Section */
        .download-section {
            background: var(--bg);
        }
        .download-wrap {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
        }
        .download-content {
            padding-right: 24px;
        }
        .download-content .section-title {
            margin-bottom: 8px;
        }
        .download-desc {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 24px;
            letter-spacing: 0.3px;
        }
        .download-btns {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            align-items: center;
        }
        .store-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 12px 24px;
            background: var(--card-bg);
            border: 1.5px solid var(--border);
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 14px;
            color: var(--text);
            transition: all var(--transition);
            letter-spacing: 0.3px;
        }
        .store-btn:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        .store-btn .icon {
            font-size: 22px;
            line-height: 1;
        }
        .download-qr-placeholder {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 16px;
            flex-direction: column;
            text-align: center;
        }
        .qr-box {
            width: 200px;
            height: 200px;
            border-radius: var(--radius-lg);
            background: var(--card-bg);
            border: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .qr-box img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .qr-hint {
            font-size: 13px;
            color: var(--text-secondary);
            letter-spacing: 0.3px;
        }
        /* Features */
        .features-section {
            background: var(--bg-alt);
        }
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 48px;
            align-items: center;
            margin-bottom: 48px;
        }
        .feature-row:last-child {
            margin-bottom: 0;
        }
        .feature-row.reverse {
            direction: rtl;
        }
        .feature-row.reverse > * {
            direction: ltr;
        }
        .feature-text {
            padding: 0 12px;
        }
        .feature-text .feature-label {
            display: inline-block;
            padding: 4px 12px;
            background: rgba(31, 77, 62, 0.08);
            border-radius: 16px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .feature-text h3 {
            font-size: 22px;
            font-weight: 700;
            margin-bottom: 12px;
            color: var(--text);
            line-height: 1.45;
            letter-spacing: 0.4px;
        }
        .feature-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.72;
            letter-spacing: 0.3px;
        }
        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--border);
            background: var(--card-bg);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .feature-image:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-2px);
        }
        .feature-image img {
            width: 100%;
            object-fit: cover;
        }
        /* Process Steps */
        .process-section {
            background: var(--bg);
        }
        .steps-wrap {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            padding: 24px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            position: relative;
            counter-increment: step;
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .step-item::before {
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .step-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .step-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            letter-spacing: 0.2px;
        }
        /* Category Grid */
        .category-section {
            background: var(--bg-alt);
        }
        .category-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .category-tile {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px 14px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 600;
            color: var(--text);
            text-align: center;
            line-height: 1.5;
            letter-spacing: 0.3px;
            transition: all var(--transition);
            cursor: pointer;
            min-height: 64px;
        }
        .category-tile:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
        }
        /* News / CMS */
        .news-section {
            background: var(--bg);
        }
        .news-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-bottom: 32px;
        }
        .news-card {
            background: var(--card-bg);
            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;
        }
        .news-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .news-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .news-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .news-card:hover .news-card-img img {
            transform: scale(1.03);
        }
        .news-card-body {
            padding: 18px 16px 16px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .news-card-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            letter-spacing: 0.3px;
            min-height: 48px;
        }
        .news-card-summary {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
            letter-spacing: 0.2px;
            flex: 1;
        }
        .news-card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
            padding-top: 12px;
            border-top: 1px solid var(--border);
            letter-spacing: 0.2px;
        }
        .news-tag {
            display: inline-block;
            padding: 3px 10px;
            background: rgba(31, 77, 62, 0.08);
            border-radius: 12px;
            font-size: 11px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.2px;
        }
        .news-empty {
            text-align: center;
            padding: 40px;
            color: var(--text-secondary);
            font-size: 14px;
            letter-spacing: 0.3px;
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
            background: var(--card-bg);
        }
        /* Market Data */
        .market-section {
            background: var(--bg-alt);
        }
        .market-table-wrap {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
        }
        .market-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }
        .market-table th {
            background: var(--primary);
            color: #fff;
            padding: 14px 16px;
            text-align: left;
            font-weight: 600;
            letter-spacing: 0.3px;
            font-size: 13px;
        }
        .market-table td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
            color: var(--text);
            letter-spacing: 0.2px;
        }
        .market-table tr:last-child td {
            border-bottom: none;
        }
        .market-table tr:hover td {
            background: #fdfbf8;
        }
        .up {
            color: #c0392b;
            font-weight: 600;
        }
        .down {
            color: #1a7a3c;
            font-weight: 600;
        }
        .market-disclaimer {
            font-size: 12px;
            color: var(--text-secondary);
            margin-top: 12px;
            letter-spacing: 0.2px;
        }
        /* Security */
        .security-section {
            background: var(--bg);
        }
        .security-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .security-item {
            padding: 28px 22px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            text-align: center;
            transition: all var(--transition);
        }
        .security-item:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--success);
        }
        .security-icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(62, 125, 90, 0.1);
            color: var(--success);
            font-size: 24px;
            margin-bottom: 14px;
        }
        .security-item h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            letter-spacing: 0.3px;
        }
        .security-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            letter-spacing: 0.2px;
        }
        /* FAQ */
        .faq-section {
            background: var(--bg-alt);
        }
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
            margin-bottom: 0;
        }
        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 0;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            letter-spacing: 0.3px;
            text-align: left;
            transition: color var(--transition);
        }
        .faq-question:hover {
            color: var(--accent);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text-secondary);
            font-size: 18px;
            transition: all var(--transition);
            margin-left: 16px;
        }
        .faq-item.open .faq-question .faq-icon {
            background: var(--accent);
            color: #fff;
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 0;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 0 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            letter-spacing: 0.2px;
            padding: 14px 16px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
        }
        /* Testimonials */
        .testimonials-section {
            background: var(--bg);
        }
        .testimonials-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .testimonial-card {
            padding: 28px 24px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            position: relative;
            transition: all var(--transition);
        }
        .testimonial-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .testimonial-card::before {
            content: '"';
            font-size: 48px;
            font-weight: 700;
            color: var(--accent);
            opacity: 0.4;
            line-height: 1;
            display: block;
            margin-bottom: 8px;
        }
        .testimonial-text {
            font-size: 14px;
            color: var(--text);
            line-height: 1.7;
            margin-bottom: 14px;
            letter-spacing: 0.2px;
        }
        .testimonial-author {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            letter-spacing: 0.3px;
        }
        .testimonial-role {
            font-size: 12px;
            color: var(--text-secondary);
            letter-spacing: 0.2px;
        }
        /* Partners */
        .partners-section {
            background: var(--bg-alt);
        }
        .partners-grid {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 16px;
        }
        .partner-tile {
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 22px 14px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            font-size: 13px;
            font-weight: 600;
            color: var(--text-secondary);
            letter-spacing: 0.3px;
            transition: all var(--transition);
            text-align: center;
            line-height: 1.4;
            min-height: 72px;
        }
        .partner-tile:hover {
            border-color: var(--accent);
            color: var(--accent);
            box-shadow: var(--shadow-sm);
        }
        /* Bottom CTA */
        .bottom-cta {
            background: var(--primary);
            padding: 64px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .bottom-cta::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('/assets/images/fe414bef0e4bd603.webp') center / cover no-repeat;
            opacity: 0.08;
            pointer-events: none;
        }
        .bottom-cta .container {
            position: relative;
            z-index: 1;
        }
        .bottom-cta h2 {
            font-size: 32px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.6px;
        }
        .bottom-cta p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 28px;
            letter-spacing: 0.3px;
            max-width: 480px;
            margin-left: auto;
            margin-right: auto;
            line-height: 1.7;
        }
        .bottom-cta .btn {
            font-size: 16px;
            padding: 16px 40px;
        }
        /* Related Topics */
        .related-section {
            background: var(--bg);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .related-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }
        .related-card-img {
            width: 100%;
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
        }
        .related-card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform var(--transition);
        }
        .related-card:hover .related-card-img img {
            transform: scale(1.03);
        }
        .related-card-body {
            padding: 16px;
        }
        .related-card-body h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 6px;
            line-height: 1.5;
            letter-spacing: 0.3px;
        }
        .related-card-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            letter-spacing: 0.2px;
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            margin-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.4px;
        }
        .footer-brand p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            letter-spacing: 0.2px;
        }
        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.4px;
        }
        .footer-col ul {
            display: flex;
            flex-direction: column;
            gap: 10px;
        }
        .footer-col ul a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            transition: color var(--transition);
            letter-spacing: 0.2px;
        }
        .footer-col ul a:hover {
            color: var(--accent);
        }
        .footer-contact {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            line-height: 1.7;
            letter-spacing: 0.2px;
        }
        .footer-contact p {
            margin-bottom: 8px;
        }
        .footer-contact .contact-phone {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            letter-spacing: 0.4px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            text-align: center;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.4);
            letter-spacing: 0.3px;
        }
        .footer-bottom a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a:hover {
            color: var(--accent);
        }
        /* Responsive */
        @media (max-width: 1100px) {
            .category-grid {
                grid-template-columns: repeat(4, 1fr);
            }
            .partners-grid {
                grid-template-columns: repeat(3, 1fr);
            }
        }
        @media (max-width: 992px) {
            :root {
                --section-pad: 56px;
            }
            .hero .container {
                grid-template-columns: 1fr;
                gap: 36px;
            }
            .hero-visual {
                min-height: auto;
                max-width: 420px;
                margin: 0 auto;
            }
            .stats-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 20px;
            }
            .download-wrap {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .download-content {
                padding-right: 0;
            }
            .feature-row {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .feature-row.reverse {
                direction: ltr;
            }
            .steps-wrap {
                grid-template-columns: repeat(2, 1fr);
            }
            .news-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .security-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .testimonials-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .related-grid {
                grid-template-columns: 1fr 1fr;
                gap: 20px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 28px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 40px;
                --header-height: 58px;
            }
            body {
                font-size: 14px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .site-header .container {
                padding-right: 12px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .site-logo {
                font-size: 16px;
            }
            .hero {
                padding-top: calc(var(--header-height) + 40px);
                padding-bottom: 40px;
            }
            .hero h1 {
                font-size: 28px;
                letter-spacing: 0.4px;
            }
            .hero-subtitle {
                font-size: 14px;
            }
            .hero-actions {
                gap: 12px;
            }
            .btn {
                padding: 12px 22px;
                font-size: 14px;
            }
            .section-title {
                font-size: 24px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .stat-number {
                font-size: 24px;
            }
            .stat-label {
                font-size: 12px;
            }
            .category-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .category-tile {
                padding: 16px 12px;
                font-size: 12px;
                min-height: 56px;
            }
            .steps-wrap {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .security-grid {
                grid-template-columns: 1fr 1fr;
                gap: 14px;
            }
            .security-item {
                padding: 20px 14px;
            }
            .testimonials-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .partners-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .partner-tile {
                padding: 16px 10px;
                font-size: 11px;
                min-height: 56px;
            }
            .related-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .bottom-cta h2 {
                font-size: 24px;
            }
            .bottom-cta .btn {
                font-size: 14px;
                padding: 14px 28px;
            }
            .market-table {
                font-size: 12px;
            }
            .market-table th,
            .market-table td {
                padding: 10px 8px;
                font-size: 12px;
            }
            .faq-question {
                font-size: 14px;
                padding: 14px 0;
            }
            .testimonial-card {
                padding: 22px 18px;
            }
            .feature-text h3 {
                font-size: 18px;
            }
            .feature-text .feature-label {
                font-size: 11px;
            }
            .news-card-title {
                font-size: 15px;
            }
        }
        @media (max-width: 480px) {
            :root {
                --section-pad: 32px;
            }
            .hero h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 21px;
            }
            .stats-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .stat-number {
                font-size: 20px;
            }
            .category-grid {
                grid-template-columns: 1fr 1fr;
                gap: 10px;
            }
            .security-grid {
                grid-template-columns: 1fr;
                gap: 12px;
            }
            .news-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .footer-grid {
                gap: 20px;
            }
            .store-btn {
                padding: 10px 16px;
                font-size: 12px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #1F4D3E;
            --primary-deep: #173a2f;
            --accent: #C9953D;
            --accent-hover: #b08330;
            --copper: #B86E3A;
            --bg: #FAF7F2;
            --bg-alt: #F2EFEA;
            --card-bg: #FFFFFF;
            --text: #2B2B2B;
            --text-secondary: #6B6560;
            --text-light: #FFFFFF;
            --border: #E5DFD6;
            --success: #3E7D5A;
            --radius-lg: 8px;
            --radius-md: 4px;
            --radius-sm: 2px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --header-height: 64px;
            --section-pad: 64px;
            --section-pad-mobile: 40px;
            --transition: 0.25s ease;
        }

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

        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.72;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
            padding-top: var(--header-height);
        }

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

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

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

        button,
        input,
        textarea,
        select {
            font-family: var(--font-main);
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

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

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

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

        .section-deep {
            background: var(--primary);
            color: var(--text-light);
        }

        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.72);
        }

        .section-deep .section-title {
            color: var(--text-light);
        }

        .section-title {
            font-size: 28px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 680px;
        }

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

        .section-header.center {
            text-align: center;
        }

        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: var(--accent);
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
            flex-shrink: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 0 2px;
            position: relative;
            line-height: 1;
            letter-spacing: 0.4px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }

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

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }

        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            width: 34px;
            height: 28px;
            justify-content: center;
            align-items: flex-end;
            padding: 0;
        }

        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all 0.3s ease;
            transform-origin: center;
        }

        .nav-toggle span:nth-child(2) {
            width: 18px;
        }

        .nav-toggle.open span:first-child {
            transform: translateY(7px) rotate(45deg);
            width: 24px;
        }

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

        .nav-toggle.open span:last-child {
            transform: translateY(-7px) rotate(-45deg);
            width: 24px;
        }

        /* Breadcrumb */
        .breadcrumb-nav {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 16px;
            display: flex;
            flex-wrap: wrap;
            gap: 6px;
            align-items: center;
        }

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

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

        .breadcrumb-nav .separator {
            color: var(--border);
            user-select: none;
        }

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

        /* Category H1 Section */
        .category-intro {
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            padding-top: 32px;
            padding-bottom: 40px;
        }

        .category-intro-grid {
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
        }

        .category-intro-content {
            max-width: 680px;
        }

        .category-intro h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: 0.8px;
        }

        .category-intro-desc {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-secondary);
            margin-bottom: 24px;
        }

        .intro-actions {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.5;
            letter-spacing: 0.5px;
            cursor: pointer;
            transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
            border: 1px solid transparent;
        }

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

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

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

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

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

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

        .category-intro-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-md);
            aspect-ratio: 4 / 3;
            background: var(--bg-alt);
        }

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

        /* Feature Alternating Section */
        .feature-row {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            align-items: center;
            margin-bottom: 48px;
        }

        .feature-row:last-child {
            margin-bottom: 0;
        }

        .feature-row.reverse {
            direction: rtl;
        }

        .feature-row.reverse > * {
            direction: ltr;
        }

        .feature-image {
            border-radius: var(--radius-lg);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            aspect-ratio: 4 / 3;
            background: var(--bg-alt);
        }

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

        .feature-row:hover .feature-image img {
            transform: scale(1.03);
        }

        .feature-text {
            padding: 0 8px;
        }

        .feature-tag {
            display: inline-block;
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(201, 149, 61, 0.12);
            border-radius: var(--radius-sm);
            margin-bottom: 10px;
            letter-spacing: 0.5px;
        }

        .feature-text h3 {
            font-size: 21px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 10px;
            line-height: 1.4;
        }

        .feature-text p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin-bottom: 0;
        }

        /* Steps */
        .steps-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            margin-top: 12px;
        }

        .step-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 22px 18px;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
        }

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

        .step-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 10px;
            line-height: 1;
            letter-spacing: 1px;
        }

        .step-card h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .step-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Filter Toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            padding: 14px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            margin-bottom: 28px;
        }

        .filter-toolbar .filter-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        .filter-btn {
            padding: 6px 16px;
            background: transparent;
            color: var(--text-secondary);
            font-size: 13px;
            font-weight: 500;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }

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

        .filter-sort {
            margin-left: auto;
            display: flex;
            gap: 8px;
            align-items: center;
        }

        .filter-sort select {
            padding: 6px 12px;
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            font-size: 13px;
            color: var(--text);
            background: var(--bg);
            cursor: pointer;
        }

        /* News Card Grid */
        .news-card-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

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

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

        .news-card .card-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
            display: block;
        }

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

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

        .news-card .card-body {
            padding: 18px 20px 14px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }

        .news-card .card-cat {
            display: inline-block;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(201, 149, 61, 0.1);
            padding: 3px 8px;
            border-radius: var(--radius-sm);
            margin-bottom: 8px;
            align-self: flex-start;
            letter-spacing: 0.5px;
        }

        .news-card .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .card-title a {
            color: inherit;
            transition: color var(--transition);
        }

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

        .news-card .card-excerpt {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 14px;
            flex: 1;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .news-card .card-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
            padding-top: 10px;
            border-top: 1px solid var(--border);
        }

        .empty-state {
            text-align: center;
            padding: 40px 20px;
            color: var(--text-secondary);
            background: var(--bg-alt);
            border-radius: var(--radius-lg);
            font-size: 15px;
        }

        .empty-state-icon {
            font-size: 36px;
            margin-bottom: 8px;
            display: block;
        }

        /* Hot Items */
        .hot-list {
            display: grid;
            grid-template-columns: 1fr;
            gap: 12px;
        }

        .hot-item {
            display: flex;
            align-items: center;
            gap: 16px;
            padding: 14px 18px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .hot-item:hover {
            box-shadow: var(--shadow-sm);
            transform: translateX(2px);
        }

        .hot-rank {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            min-width: 36px;
            text-align: center;
            line-height: 1;
        }

        .hot-item-content {
            flex: 1;
            min-width: 0;
        }

        .hot-item-title {
            font-size: 15px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.45;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }

        .hot-item-title a:hover {
            color: var(--accent);
        }

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

        /* Topic Entry */
        .topic-entry-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .topic-entry-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            transition: box-shadow var(--transition), transform var(--transition);
        }

        .topic-entry-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .topic-entry-card .topic-image {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg-alt);
        }

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

        .topic-entry-card:hover .topic-image img {
            transform: scale(1.04);
        }

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

        .topic-entry-card .topic-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .topic-entry-card .topic-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Data Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            margin-top: 12px;
        }

        .stat-item {
            text-align: center;
            padding: 18px 12px;
        }

        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.3;
            margin-bottom: 6px;
            letter-spacing: 0.5px;
        }

        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.5;
        }

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

        .faq-item {
            border-bottom: 1px solid var(--border);
            padding: 0;
        }

        .faq-item:first-child {
            border-top: 1px solid var(--border);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 8px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            cursor: pointer;
            transition: color var(--transition);
            background: none;
            border: none;
        }

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

        .faq-question .faq-icon {
            font-size: 22px;
            font-weight: 300;
            color: var(--accent);
            flex-shrink: 0;
            transition: transform 0.3s ease;
            line-height: 1;
        }

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

        .faq-answer {
            padding: 0 8px 18px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
            display: none;
        }

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

        /* CTA Section */
        .cta-panel {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 40px 48px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 32px;
            flex-wrap: wrap;
        }

        .cta-panel h3 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
            line-height: 1.35;
        }

        .cta-panel p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            line-height: 1.7;
        }

        .cta-panel .btn {
            flex-shrink: 0;
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: var(--text-light);
            padding-top: 48px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.5fr;
            gap: 32px;
            padding-bottom: 32px;
        }

        .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .footer-brand p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            margin-bottom: 0;
        }

        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }

        .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: var(--accent);
        }

        .footer-contact p {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 6px;
        }

        .footer-contact .contact-phone {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 8px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: 16px 0;
        }

        .footer-bottom p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .category-intro-grid {
                grid-template-columns: 1fr 300px;
                gap: 32px;
            }

            .category-intro h1 {
                font-size: 30px;
            }

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

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

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

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

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

        @media (max-width: 768px) {
            :root {
                --section-pad: var(--section-pad-mobile);
            }

            .main-nav {
                display: none;
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                bottom: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: center;
                justify-content: center;
                gap: 28px;
                z-index: 999;
                padding: 40px 24px;
                border-bottom: 1px solid var(--border);
            }

            body.nav-open .main-nav {
                display: flex;
            }

            body.nav-open {
                overflow: hidden;
            }

            .main-nav a {
                font-size: 20px;
                font-weight: 500;
            }

            .main-nav a::after {
                bottom: -8px;
            }

            .nav-cta {
                font-size: 16px;
                padding: 12px 28px;
            }

            .nav-toggle {
                display: flex;
            }

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

            .category-intro-image {
                aspect-ratio: 16 / 9;
            }

            .category-intro h1 {
                font-size: 26px;
            }

            .feature-row,
            .feature-row.reverse {
                grid-template-columns: 1fr;
                direction: ltr;
                gap: 20px;
            }

            .feature-row.reverse > * {
                direction: ltr;
            }

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

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

            .topic-entry-grid {
                grid-template-columns: 1fr;
            }

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

            .stat-number {
                font-size: 22px;
            }

            .cta-panel {
                padding: 28px 24px;
                flex-direction: column;
                text-align: center;
            }

            .cta-panel h3 {
                font-size: 22px;
            }

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

            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }

            .filter-sort {
                margin-left: 0;
                width: 100%;
            }

            .filter-sort select {
                flex: 1;
            }
        }

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

            .section {
                padding-top: 32px;
                padding-bottom: 32px;
            }

            .category-intro {
                padding-top: 20px;
                padding-bottom: 24px;
            }

            .category-intro h1 {
                font-size: 22px;
            }

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

            .stats-row {
                grid-template-columns: 1fr 1fr;
                gap: 8px;
            }

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

            .intro-actions {
                flex-direction: column;
                gap: 10px;
            }

            .intro-actions .btn {
                width: 100%;
            }

            .hot-item {
                padding: 12px 14px;
                gap: 10px;
            }

            .hot-rank {
                font-size: 18px;
                min-width: 28px;
            }
        }

/* roulang page: article */
:root {
            --primary: #1F4D3E;
            --primary-deep: #173a2f;
            --accent: #C9953D;
            --accent-hover: #b08330;
            --copper: #B86E3A;
            --bg: #FAF7F2;
            --bg-alt: #F2EFEA;
            --card-bg: #FFFFFF;
            --text: #2B2B2B;
            --text-secondary: #6B6560;
            --text-light: #FFFFFF;
            --border: #E5DFD6;
            --success: #3E7D5A;
            --radius-lg: 8px;
            --radius-md: 4px;
            --radius-sm: 2px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --header-height: 64px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s ease;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.72;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
            padding-top: var(--header-height);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button, input, textarea, select {
            font-family: var(--font-main);
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-deep {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 680px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: var(--accent);
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 0 2px;
            position: relative;
            line-height: 1;
            letter-spacing: 0.4px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: none;
            border: none;
            cursor: pointer;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: all var(--transition);
        }
        .nav-toggle.open span:nth-child(1) {
            transform: translateY(7px) rotate(45deg);
        }
        .nav-toggle.open span:nth-child(2) {
            opacity: 0;
        }
        .nav-toggle.open span:nth-child(3) {
            transform: translateY(-7px) rotate(-45deg);
        }
        /* Breadcrumb */
        .breadcrumb-section {
            padding-top: 28px;
            padding-bottom: 0;
            background: var(--bg);
        }
        .breadcrumb-nav {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 6px;
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 32px;
            padding: 12px 0;
            border-bottom: 1px solid var(--border);
        }
        .breadcrumb-nav a {
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .breadcrumb-nav a:hover {
            color: var(--accent);
        }
        .breadcrumb-nav .separator {
            color: var(--border);
            font-size: 14px;
            margin: 0 4px;
        }
        .breadcrumb-nav .current {
            color: var(--text);
            font-weight: 500;
            max-width: 280px;
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
        }
        /* Article Layout */
        .article-layout {
            display: grid;
            grid-template-columns: minmax(0, 1fr) 340px;
            gap: 40px;
            padding-top: 0;
            padding-bottom: var(--section-pad);
            align-items: start;
        }
        .article-main {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 40px 44px;
            box-shadow: var(--shadow-sm);
            min-width: 0;
        }
        .article-header {
            margin-bottom: 32px;
            padding-bottom: 24px;
            border-bottom: 1px solid var(--border);
        }
        .article-header h1 {
            font-size: 34px;
            font-weight: 700;
            line-height: 1.45;
            color: var(--primary);
            margin-bottom: 16px;
            letter-spacing: 0.3px;
            word-break: break-word;
        }
        .article-meta {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
            font-size: 13px;
            color: var(--text-secondary);
        }
        .article-meta .meta-item {
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .article-meta .meta-item::before {
            content: '';
            display: inline-block;
            width: 5px;
            height: 5px;
            border-radius: 50%;
            background: var(--accent);
            margin-right: 2px;
        }
        .article-meta .meta-item:first-child::before {
            display: none;
        }
        .article-category-tag {
            display: inline-flex;
            align-items: center;
            padding: 4px 12px;
            background: rgba(201, 149, 61, 0.12);
            color: var(--accent);
            font-size: 12px;
            font-weight: 600;
            border-radius: 2px;
            letter-spacing: 0.3px;
        }
        .article-views {
            color: var(--text-secondary);
        }
        /* Article Body */
        .article-body {
            font-size: 16px;
            line-height: 1.85;
            color: var(--text);
            max-width: 760px;
            margin: 0 auto;
            word-break: break-word;
        }
        .article-body p {
            margin-bottom: 1.5em;
        }
        .article-body h2 {
            font-size: 22px;
            font-weight: 700;
            line-height: 1.5;
            color: var(--primary);
            margin-top: 2em;
            margin-bottom: 0.8em;
            padding-bottom: 8px;
            border-bottom: 2px solid var(--bg-alt);
        }
        .article-body h3 {
            font-size: 19px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--primary);
            margin-top: 1.8em;
            margin-bottom: 0.7em;
        }
        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
            margin-top: 1.5em;
            margin-bottom: 0.6em;
        }
        .article-body blockquote {
            margin: 1.8em 0;
            padding: 16px 20px;
            background: var(--bg-alt);
            border-left: 3px solid var(--accent);
            border-radius: 0 var(--radius-md) var(--radius-md) 0;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .article-body ul,
        .article-body ol {
            margin: 0 0 1.5em 0;
            padding-left: 1.6em;
        }
        .article-body li {
            margin-bottom: 0.5em;
        }
        .article-body img {
            border-radius: var(--radius-lg);
            margin: 1.8em auto;
            box-shadow: var(--shadow-sm);
        }
        .article-body a {
            color: var(--accent);
            text-decoration: underline;
            text-underline-offset: 3px;
        }
        .article-body a:hover {
            color: var(--accent-hover);
        }
        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 1.8em 0;
            font-size: 14px;
        }
        .article-body table th,
        .article-body table td {
            padding: 10px 14px;
            border: 1px solid var(--border);
            text-align: left;
        }
        .article-body table th {
            background: var(--bg-alt);
            font-weight: 600;
            color: var(--text);
        }
        .article-body code {
            background: var(--bg-alt);
            padding: 2px 6px;
            border-radius: 2px;
            font-size: 0.9em;
            color: var(--primary);
        }
        .article-body pre {
            background: var(--bg-alt);
            padding: 16px 20px;
            border-radius: var(--radius-md);
            overflow-x: auto;
            margin: 1.8em 0;
        }
        .article-body pre code {
            background: none;
            padding: 0;
            color: var(--text);
        }
        /* Article Empty */
        .article-empty {
            text-align: center;
            padding: 60px 20px;
            color: var(--text-secondary);
        }
        .article-empty p {
            font-size: 18px;
            margin-bottom: 20px;
        }
        .article-empty .btn {
            display: inline-flex;
            align-items: center;
            padding: 10px 24px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: background var(--transition);
        }
        .article-empty .btn:hover {
            background: var(--primary);
            color: #fff;
        }
        /* Tags & Share */
        .article-tags-share {
            margin-top: 40px;
            padding-top: 24px;
            border-top: 1px solid var(--border);
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 16px;
        }
        .article-tags {
            display: flex;
            align-items: center;
            flex-wrap: wrap;
            gap: 8px;
        }
        .article-tags .tag-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-right: 4px;
            font-weight: 500;
        }
        .article-tags .tag {
            display: inline-block;
            padding: 4px 12px;
            background: var(--bg-alt);
            color: var(--text);
            font-size: 12px;
            border-radius: 2px;
            transition: all var(--transition);
            cursor: default;
        }
        .article-tags .tag:hover {
            background: var(--accent);
            color: #fff;
        }
        .article-share {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .article-share .share-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-right: 4px;
        }
        .share-btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: 50%;
            background: var(--bg-alt);
            color: var(--text);
            font-size: 13px;
            font-weight: 600;
            transition: all var(--transition);
            cursor: pointer;
            border: none;
        }
        .share-btn:hover {
            background: var(--primary);
            color: #fff;
        }
        /* Article Return */
        .article-return {
            margin-top: 36px;
            padding-top: 20px;
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .btn-return {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 10px 22px;
            background: var(--bg-alt);
            color: var(--text);
            font-size: 14px;
            font-weight: 500;
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            transition: all var(--transition);
            cursor: pointer;
        }
        .btn-return:hover {
            background: var(--border);
            color: var(--text);
        }
        /* Sidebar */
        .article-sidebar {
            display: flex;
            flex-direction: column;
            gap: 24px;
            position: sticky;
            top: calc(var(--header-height) + 24px);
        }
        .sidebar-widget {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
        }
        .sidebar-widget .widget-title {
            font-size: 17px;
            font-weight: 700;
            color: var(--text);
            margin-bottom: 18px;
            padding-bottom: 10px;
            border-bottom: 1px solid var(--border);
            letter-spacing: 0.3px;
        }
        .sidebar-hot-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-hot-list li {
            padding: 10px 0;
            border-bottom: 1px solid var(--bg-alt);
        }
        .sidebar-hot-list li:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .sidebar-hot-list a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            line-height: 1.6;
            display: block;
            transition: color var(--transition);
        }
        .sidebar-hot-list a:hover {
            color: var(--accent);
        }
        .sidebar-hot-list .hot-date {
            font-size: 12px;
            color: var(--text-secondary);
            display: block;
            margin-top: 4px;
        }
        .sidebar-nav-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-nav-list li {
            margin-bottom: 6px;
        }
        .sidebar-nav-list a {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 14px;
            background: var(--bg-alt);
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            transition: all var(--transition);
        }
        .sidebar-nav-list a:hover {
            background: var(--primary);
            color: #fff;
        }
        .sidebar-nav-list a::after {
            content: '›';
            font-size: 16px;
            font-weight: 700;
            color: var(--text-secondary);
            transition: color var(--transition);
        }
        .sidebar-nav-list a:hover::after {
            color: var(--accent);
        }
        .sidebar-download {
            text-align: center;
            background: var(--primary);
            color: var(--text-light);
            border: none;
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            box-shadow: var(--shadow-md);
        }
        .sidebar-download img {
            width: 120px;
            height: 120px;
            object-fit: cover;
            border-radius: var(--radius-lg);
            margin: 0 auto 16px;
            box-shadow: 0 4px 12px rgba(0,0,0,0.2);
        }
        .sidebar-download .download-title {
            font-size: 17px;
            font-weight: 700;
            margin-bottom: 8px;
        }
        .sidebar-download .download-desc {
            font-size: 13px;
            color: rgba(255,255,255,0.75);
            margin-bottom: 16px;
            line-height: 1.6;
        }
        .sidebar-download .btn-download-side {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 10px 24px;
            background: var(--accent);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: all var(--transition);
        }
        .sidebar-download .btn-download-side:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        /* Related Articles */
        .related-section {
            padding-top: 0;
            padding-bottom: var(--section-pad);
        }
        .related-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .related-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 12px;
        }
        .related-card:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
            border-color: var(--accent);
        }
        .related-card .related-tag {
            display: inline-flex;
            align-items: center;
            width: fit-content;
            padding: 3px 10px;
            background: rgba(201, 149, 61, 0.12);
            color: var(--accent);
            font-size: 11px;
            font-weight: 600;
            border-radius: 2px;
        }
        .related-card .related-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.55;
            color: var(--text);
            transition: color var(--transition);
            word-break: break-word;
        }
        .related-card .related-title:hover {
            color: var(--accent);
        }
        .related-card .related-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.7;
            flex: 1;
            word-break: break-word;
        }
        .related-card .related-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
            border-top: 1px solid var(--bg-alt);
            padding-top: 12px;
        }
        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255,255,255,0.8);
            padding-top: 56px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255,255,255,0.65);
            max-width: 300px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255,255,255,0.65);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            font-size: 13px;
            margin-bottom: 8px;
            color: rgba(255,255,255,0.65);
        }
        .footer-contact .contact-phone {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            margin: 8px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.12);
            padding: 20px 0;
        }
        .footer-bottom p {
            font-size: 12px;
            color: rgba(255,255,255,0.5);
            margin: 0;
            text-align: center;
            line-height: 1.6;
        }
        /* Mobile Nav Overlay */
        .mobile-nav-overlay {
            display: none;
            position: fixed;
            top: var(--header-height);
            left: 0;
            right: 0;
            bottom: 0;
            background: var(--card-bg);
            z-index: 999;
            padding: 32px 24px;
            overflow-y: auto;
        }
        .mobile-nav-overlay.open {
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .mobile-nav-overlay a {
            font-size: 22px;
            font-weight: 600;
            color: var(--text);
            padding: 14px 0;
            border-bottom: 1px solid var(--bg-alt);
            transition: color var(--transition);
        }
        .mobile-nav-overlay a:hover {
            color: var(--accent);
        }
        .mobile-nav-overlay .nav-cta-mobile {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 14px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 16px;
            font-weight: 600;
            border-radius: var(--radius-md);
            margin-top: 16px;
            border: none;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .article-layout {
                grid-template-columns: minmax(0, 1fr) 300px;
                gap: 28px;
            }
            .article-main {
                padding: 32px 28px;
            }
            .article-header h1 {
                font-size: 30px;
            }
            .related-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 32px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-pad: 48px;
                --header-height: 58px;
            }
            .main-nav {
                display: none;
            }
            .nav-toggle {
                display: flex;
            }
            .article-layout {
                grid-template-columns: 1fr;
                gap: 32px;
                padding-top: 0;
            }
            .article-sidebar {
                position: static;
                width: 100%;
            }
            .article-main {
                padding: 24px 20px;
            }
            .article-header h1 {
                font-size: 26px;
                line-height: 1.5;
            }
            .article-body {
                font-size: 15px;
            }
            .article-meta {
                gap: 10px;
                font-size: 12px;
            }
            .article-tags-share {
                flex-direction: column;
                align-items: flex-start;
                gap: 12px;
            }
            .related-grid {
                grid-template-columns: 1fr;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .breadcrumb-nav .current {
                max-width: 180px;
            }
        }
        @media (max-width: 520px) {
            :root {
                --section-pad: 32px;
            }
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .article-main {
                padding: 20px 16px;
                border-radius: var(--radius-md);
            }
            .article-header h1 {
                font-size: 24px;
            }
            .article-body {
                font-size: 15px;
                line-height: 1.8;
            }
            .related-card {
                padding: 18px;
            }
            .sidebar-download img {
                width: 90px;
                height: 90px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #1F4D3E;
            --primary-deep: #173a2f;
            --accent: #C9953D;
            --accent-hover: #b08330;
            --copper: #B86E3A;
            --bg: #FAF7F2;
            --bg-alt: #F2EFEA;
            --card-bg: #FFFFFF;
            --text: #2B2B2B;
            --text-secondary: #6B6560;
            --text-light: #FFFFFF;
            --border: #E5DFD6;
            --success: #3E7D5A;
            --radius-lg: 8px;
            --radius-md: 4px;
            --radius-sm: 2px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --header-height: 64px;
            --section-pad: 72px;
            --transition: 0.25s ease;
        }
        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.72;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
            padding-top: var(--header-height);
        }
        img {
            display: block;
            max-width: 100%;
            height: auto;
        }
        a {
            color: inherit;
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover {
            color: var(--accent);
        }
        button, input, textarea, select {
            font-family: var(--font-main);
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }
        button {
            cursor: pointer;
        }
        button:focus-visible, a:focus-visible, input:focus-visible {
            outline: 2px solid var(--accent);
            outline-offset: 2px;
        }
        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }
        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }
        .section-alt {
            background: var(--bg-alt);
        }
        .section-deep {
            background: var(--primary);
            color: var(--text-light);
        }
        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.75);
        }
        .section-deep .section-title {
            color: var(--text-light);
        }
        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 680px;
        }
        .section-header {
            margin-bottom: 40px;
        }
        .section-header.center {
            text-align: center;
        }
        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }
        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }
        .section-deep .section-title {
            color: var(--text-light);
        }
        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }
        .site-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }
        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: var(--accent);
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
        }
        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }
        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 0 2px;
            position: relative;
            line-height: 1;
            letter-spacing: 0.4px;
        }
        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }
        .main-nav a:hover::after,
        .main-nav a.active::after {
            width: 100%;
        }
        .main-nav a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
        }
        .nav-cta:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-1px);
        }
        .nav-toggle {
            display: none;
            flex-direction: column;
            gap: 5px;
            padding: 6px;
            background: transparent;
        }
        .nav-toggle span {
            display: block;
            width: 24px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
            transition: transform var(--transition), opacity var(--transition);
        }
        /* Page Hero */
        .page-hero {
            background-image: linear-gradient(rgba(31, 77, 62, 0.85), rgba(23, 58, 47, 0.92)), url('/assets/images/948770ed7862f195.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            padding: 72px 0 64px;
            border-bottom: 4px solid var(--accent);
        }
        .breadcrumb-hero {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 20px;
        }
        .breadcrumb-hero a {
            color: rgba(255, 255, 255, 0.9);
            text-decoration: none;
        }
        .breadcrumb-hero a:hover {
            color: var(--accent);
        }
        .page-hero h1 {
            font-size: 40px;
            font-weight: 700;
            line-height: 1.3;
            margin-bottom: 16px;
            letter-spacing: 0.8px;
        }
        .page-hero .lead {
            font-size: 16px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.85);
            max-width: 800px;
            margin-bottom: 28px;
        }
        .btn-accent {
            display: inline-block;
            padding: 12px 28px;
            background: var(--accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-md);
            border: none;
            transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
            cursor: pointer;
        }
        .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-md);
        }
        .btn-outline-light {
            display: inline-block;
            padding: 11px 26px;
            background: transparent;
            color: #fff;
            font-size: 15px;
            font-weight: 500;
            border: 1px solid rgba(255, 255, 255, 0.5);
            border-radius: var(--radius-md);
            transition: background var(--transition), border-color var(--transition), color var(--transition);
            cursor: pointer;
        }
        .btn-outline-light:hover {
            background: rgba(255, 255, 255, 0.12);
            border-color: #fff;
            color: #fff;
        }
        /* Cards */
        .feature-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px;
            height: 100%;
            box-shadow: var(--shadow-sm);
            transition: box-shadow var(--transition), transform var(--transition);
        }
        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-4px);
        }
        .feature-card .icon {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: rgba(31, 77, 62, 0.08);
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .feature-card h3 {
            font-size: 19px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
            letter-spacing: 0.3px;
        }
        .feature-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }
        /* Steps */
        .step-list {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            position: relative;
            box-shadow: var(--shadow-sm);
        }
        .step-item::before {
            counter-increment: step;
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 38px;
            height: 38px;
            background: var(--accent);
            color: #fff;
            font-size: 16px;
            font-weight: 700;
            border-radius: 50%;
            margin-bottom: 14px;
        }
        .step-item h4 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 8px;
            color: var(--primary);
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin: 0;
        }
        /* Stats */
        .stats-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .stat-card {
            text-align: center;
            padding: 32px 16px;
            background: rgba(255, 255, 255, 0.05);
            border: 1px solid rgba(255, 255, 255, 0.12);
            border-radius: var(--radius-lg);
        }
        .stat-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.8);
            margin-top: 6px;
        }
        /* FAQ */
        .accordion-custom .accordion-item {
            border: none;
            border-bottom: 1px solid var(--border);
            background: transparent;
        }
        .accordion-custom .accordion-button {
            background: transparent;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            padding: 18px 0;
            border: none;
            box-shadow: none;
        }
        .accordion-custom .accordion-button:not(.collapsed) {
            color: var(--primary);
            background: transparent;
        }
        .accordion-custom .accordion-button::after {
            filter: invert(30%) sepia(0%) saturate(0%) hue-rotate(0deg) brightness(50%) contrast(80%);
        }
        .accordion-custom .accordion-body {
            padding: 0 0 18px;
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        /* Related */
        .related-grid {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .related-item {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px;
            box-shadow: var(--shadow-sm);
            transition: transform var(--transition), box-shadow var(--transition);
            display: block;
        }
        .related-item:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-md);
        }
        .related-item h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--primary);
            margin-bottom: 6px;
        }
        .related-item p {
            font-size: 14px;
            color: var(--text-secondary);
            margin: 0;
        }
        /* Subscribe */
        .subscribe-box {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            color: #fff;
            text-align: center;
        }
        .subscribe-box h2 {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 10px;
        }
        .subscribe-box p {
            color: rgba(255, 255, 255, 0.8);
            margin-bottom: 24px;
            font-size: 15px;
        }
        .subscribe-form {
            display: flex;
            gap: 12px;
            max-width: 480px;
            margin: 0 auto;
        }
        .subscribe-form input {
            flex: 1;
            padding: 12px 16px;
            border-radius: var(--radius-md);
            background: #fff;
            border: 1px solid transparent;
            font-size: 15px;
        }
        .subscribe-form input:focus {
            border-color: var(--accent);
        }
        .subscribe-form button {
            padding: 12px 24px;
            background: var(--accent);
            color: #fff;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: background var(--transition);
            border: none;
            cursor: pointer;
        }
        .subscribe-form button:hover {
            background: var(--accent-hover);
        }
        /* Footer */
        .site-footer {
            background: var(--primary-deep);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 56px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.5fr 1fr 1fr 1fr;
            gap: 40px;
            padding-bottom: 40px;
        }
        .footer-brand .footer-logo {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            text-decoration: none;
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-contact p {
            margin-bottom: 6px;
            font-size: 14px;
        }
        .contact-phone {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            margin: 8px 0;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding: 20px 0;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
            text-align: center;
        }
        /* Responsive */
        @media (max-width: 1024px) {
            .main-nav {
                gap: 20px;
                font-size: 13px;
            }
            .stats-row,
            .step-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .site-header .container {
                flex-wrap: wrap;
            }
            .site-logo {
                font-size: 16px;
            }
            .nav-toggle {
                display: flex;
            }
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: flex-start;
                gap: 20px;
                padding: 24px;
                border-bottom: 1px solid var(--border);
                transform: translateY(-100%);
                opacity: 0;
                pointer-events: none;
                transition: transform 0.3s ease, opacity 0.3s ease;
            }
            .main-nav.mobile-open {
                transform: translateY(0);
                opacity: 1;
                pointer-events: auto;
            }
            .main-nav a {
                font-size: 18px;
                width: 100%;
            }
            .nav-cta {
                display: inline-block;
                text-align: center;
            }
            .page-hero {
                padding: 48px 0;
            }
            .page-hero h1 {
                font-size: 30px;
            }
            .section {
                padding-top: 48px;
                padding-bottom: 48px;
            }
            .section-title {
                font-size: 24px;
            }
            .related-grid,
            .step-list,
            .stats-row {
                grid-template-columns: 1fr;
            }
            .subscribe-box {
                padding: 32px 20px;
            }
            .subscribe-form {
                flex-direction: column;
            }
        }
        @media (max-width: 520px) {
            .page-hero h1 {
                font-size: 26px;
            }
            .page-hero .lead {
                font-size: 14px;
            }
            .btn-accent,
            .btn-outline-light {
                display: block;
                width: 100%;
                text-align: center;
                margin-bottom: 8px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #1F4D3E;
            --primary-deep: #173a2f;
            --accent: #C9953D;
            --accent-hover: #b08330;
            --copper: #B86E3A;
            --bg: #FAF7F2;
            --bg-alt: #F2EFEA;
            --card-bg: #FFFFFF;
            --text: #2B2B2B;
            --text-secondary: #6B6560;
            --text-light: #FFFFFF;
            --border: #E5DFD6;
            --success: #3E7D5A;
            --radius-lg: 8px;
            --radius-md: 4px;
            --radius-sm: 2px;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
            --shadow-md: 0 6px 20px rgba(0, 0, 0, 0.10);
            --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.15);
            --font-main: 'PingFang SC', 'Microsoft YaHei', 'Hiragino Sans GB', 'Noto Sans CJK SC', sans-serif;
            --container: 1200px;
            --header-height: 64px;
            --section-pad: 72px;
            --section-pad-mobile: 48px;
            --transition: 0.25s ease;
        }

        @media (max-width: 1024px) {
            :root {
                --section-pad: 56px;
            }
        }

        @media (max-width: 768px) {
            :root {
                --section-pad: 40px;
                --header-height: 58px;
            }
        }

        @media (max-width: 520px) {
            :root {
                --section-pad: 32px;
            }
        }

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

        body {
            font-family: var(--font-main);
            font-size: 15px;
            line-height: 1.72;
            color: var(--text);
            background: var(--bg);
            overflow-x: hidden;
            padding-top: var(--header-height);
        }

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

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

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

        button, input, textarea, select {
            font-family: var(--font-main);
            font-size: inherit;
            outline: none;
            border: none;
            background: none;
        }

        button {
            cursor: pointer;
        }

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

        .container {
            width: 100%;
            max-width: var(--container);
            margin: 0 auto;
            padding-left: 24px;
            padding-right: 24px;
        }

        .section {
            padding-top: var(--section-pad);
            padding-bottom: var(--section-pad);
        }

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

        .section-deep {
            background: var(--primary);
            color: var(--text-light);
        }

        .section-deep .section-subtitle {
            color: rgba(255, 255, 255, 0.7);
        }

        .section-deep .section-title {
            color: var(--text-light);
        }

        .section-title {
            font-size: 30px;
            font-weight: 700;
            line-height: 1.35;
            color: var(--text);
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }

        .section-subtitle {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 32px;
            max-width: 680px;
        }

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

        .section-header.center {
            text-align: center;
        }

        .section-header.center .section-subtitle {
            margin-left: auto;
            margin-right: auto;
        }

        /* Header & Navigation */
        .site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 1000;
            height: var(--header-height);
            background: var(--card-bg);
            border-bottom: 1px solid var(--border);
            display: flex;
            align-items: center;
        }

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

        .site-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--primary);
            letter-spacing: 0.3px;
            white-space: nowrap;
        }

        .site-logo .logo-mark {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 34px;
            height: 34px;
            border-radius: var(--radius-md);
            background: var(--primary);
            color: var(--accent);
            font-size: 14px;
            font-weight: 800;
            letter-spacing: 0;
        }

        .main-nav {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .main-nav a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text);
            padding: 0 2px;
            position: relative;
            line-height: 1;
            letter-spacing: 0.4px;
        }

        .main-nav a::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: -8px;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width var(--transition);
        }

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

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

        .nav-cta {
            display: inline-flex;
            align-items: center;
            padding: 9px 20px;
            background: var(--accent);
            color: #fff;
            font-size: 13px;
            font-weight: 600;
            border-radius: var(--radius-md);
            line-height: 1.4;
            border: none;
            cursor: pointer;
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
        }

        .nav-cta:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }

        .nav-toggle {
            display: none;
            flex-direction: column;
            justify-content: center;
            align-items: center;
            gap: 5px;
            width: 40px;
            height: 40px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: var(--card-bg);
        }

        .nav-toggle span {
            display: block;
            width: 20px;
            height: 2px;
            background: var(--text);
            transition: all var(--transition);
        }

        /* Breadcrumb */
        .breadcrumb-section {
            padding-top: 28px;
            padding-bottom: 0;
            background: var(--bg);
        }

        .breadcrumb-nav ol {
            display: flex;
            align-items: center;
            list-style: none;
            padding: 0;
            margin: 0;
            font-size: 13px;
            color: var(--text-secondary);
            gap: 8px;
            flex-wrap: wrap;
        }

        .breadcrumb-nav li {
            display: flex;
            align-items: center;
        }

        .breadcrumb-nav li + li::before {
            content: '>';
            margin-right: 8px;
            color: var(--border);
        }

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

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

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

        /* Category Hero (not homepage-style split) */
        .category-hero {
            padding: 32px 0 24px;
            background: var(--bg);
        }

        .category-hero .category-badge {
            display: inline-block;
            padding: 5px 14px;
            font-size: 12px;
            font-weight: 600;
            color: var(--accent);
            background: rgba(201, 149, 61, 0.1);
            border: 1px solid rgba(201, 149, 61, 0.3);
            border-radius: 20px;
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .category-hero h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--primary);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

        .category-hero .category-intro {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 800px;
            margin-bottom: 0;
        }

        /* Stats bar */
        .stats-bar {
            display: flex;
            align-items: center;
            gap: 40px;
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 28px 36px;
            color: var(--text-light);
            flex-wrap: wrap;
        }

        .stats-bar .stat-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
            min-width: 140px;
        }

        .stats-bar .stat-number {
            font-size: 30px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1.2;
        }

        .stats-bar .stat-label {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
        }

        .stats-bar .stat-img-wrap {
            flex: 1;
            min-width: 180px;
            border-radius: var(--radius-md);
            overflow: hidden;
            max-width: 260px;
        }

        .stats-bar .stat-img-wrap img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: var(--radius-md);
        }

        /* Step process */
        .process-steps {
            display: flex;
            gap: 24px;
            flex-wrap: wrap;
            counter-reset: step;
        }

        .process-step {
            flex: 1;
            min-width: 200px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 24px 24px 28px;
            position: relative;
            transition: box-shadow var(--transition), transform var(--transition);
            counter-increment: step;
        }

        .process-step:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
        }

        .process-step::before {
            content: counter(step);
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            background: var(--primary);
            color: var(--accent);
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 14px;
        }

        .process-step h3 {
            font-size: 17px;
            font-weight: 600;
            margin-bottom: 10px;
            color: var(--text);
        }

        .process-step p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 0;
        }

        /* Filter toolbar */
        .filter-toolbar {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 14px 20px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            margin-bottom: 28px;
            flex-wrap: wrap;
            gap: 12px;
        }

        .filter-group {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }

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

        .filter-btn {
            padding: 7px 16px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            transition: all var(--transition);
            background: var(--card-bg);
        }

        .filter-btn:hover,
        .filter-btn.active {
            border-color: var(--primary);
            color: var(--primary);
            font-weight: 600;
            background: rgba(31, 77, 62, 0.04);
        }

        .filter-select {
            padding: 7px 32px 7px 14px;
            font-size: 13px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            color: var(--text);
            background: var(--card-bg);
            appearance: none;
            background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%236B6560' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
            background-repeat: no-repeat;
            background-position: right 12px center;
            cursor: pointer;
            min-width: 120px;
        }

        /* Content cards grid */
        .content-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-bottom: 28px;
        }

        .content-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 20px 22px;
            transition: box-shadow var(--transition), transform var(--transition);
            display: flex;
            flex-direction: column;
            gap: 10px;
        }

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

        .content-card .content-meta {
            display: flex;
            align-items: center;
            justify-content: space-between;
            font-size: 12px;
            color: var(--text-secondary);
            margin-bottom: 4px;
        }

        .content-card .content-category {
            padding: 3px 10px;
            font-size: 12px;
            font-weight: 600;
            color: var(--primary);
            background: rgba(31, 77, 62, 0.08);
            border-radius: 20px;
            white-space: nowrap;
        }

        .content-card .content-title {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 0;
            color: var(--text);
        }

        .content-card .content-title a {
            color: inherit;
        }

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

        .content-card .content-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: 0;
            flex: 1;
        }

        .empty-state {
            text-align: center;
            padding: 40px 24px;
            color: var(--text-secondary);
            font-size: 15px;
            border: 1px dashed var(--border);
            border-radius: var(--radius-lg);
            background: var(--card-bg);
            grid-column: 1 / -1;
        }

        .view-more-btn {
            display: inline-flex;
            align-items: center;
            padding: 12px 28px;
            background: var(--primary);
            color: #fff;
            font-size: 14px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: background var(--transition), transform var(--transition);
            letter-spacing: 0.3px;
        }

        .view-more-btn:hover {
            background: var(--accent);
            color: #fff;
            transform: translateY(-1px);
        }

        /* Hot articles */
        .hot-articles {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .hot-article-item {
            flex: 1;
            min-width: 180px;
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 16px 18px;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            gap: 6px;
        }

        .hot-article-item:hover {
            border-color: var(--accent);
            box-shadow: var(--shadow-sm);
        }

        .hot-article-item .hot-index {
            font-size: 22px;
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
        }

        .hot-article-item .hot-title {
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            color: var(--text);
        }

        .hot-article-item .hot-title a {
            color: inherit;
        }

        .hot-article-item .hot-title a:hover {
            color: var(--accent);
        }

        .hot-article-item .hot-date {
            font-size: 12px;
            color: var(--text-secondary);
        }

        /* Related topics */
        .related-topics {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        .related-topic-card {
            background: var(--card-bg);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            transition: all var(--transition);
        }

        .related-topic-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-3px);
            border-color: var(--accent);
        }

        .related-topic-card .topic-icon {
            font-size: 28px;
            margin-bottom: 12px;
        }

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

        .related-topic-card p {
            font-size: 13px;
            color: var(--text-secondary);
            margin-bottom: 0;
            line-height: 1.6;
        }

        /* CTA box */
        .cta-box {
            background: var(--primary);
            border-radius: var(--radius-lg);
            padding: 44px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 30px;
            flex-wrap: wrap;
            color: var(--text-light);
        }

        .cta-box h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            color: var(--text-light);
            line-height: 1.35;
        }

        .cta-box p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 0;
            max-width: 500px;
            line-height: 1.7;
        }

        .cta-box .btn-accent {
            display: inline-flex;
            align-items: center;
            padding: 13px 30px;
            background: var(--accent);
            color: #fff;
            font-size: 15px;
            font-weight: 600;
            border-radius: var(--radius-md);
            transition: background var(--transition), transform var(--transition);
            white-space: nowrap;
            letter-spacing: 0.3px;
        }

        .cta-box .btn-accent:hover {
            background: var(--accent-hover);
            color: #fff;
            transform: translateY(-2px);
        }

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

        .faq-item {
            border-top: 1px solid var(--border);
            border-bottom: 1px solid var(--border);
            margin-bottom: -1px;
        }

        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 12px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text);
            text-align: left;
            width: 100%;
            transition: color var(--transition);
        }

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

        .faq-question .faq-icon {
            font-size: 20px;
            font-weight: 300;
            color: var(--accent);
            transition: transform var(--transition);
            flex-shrink: 0;
        }

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 12px;
        }

        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 12px 18px;
        }

        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.8;
            margin-bottom: 0;
            background: var(--bg-alt);
            padding: 14px 18px;
            border-radius: var(--radius-md);
        }

        /* Footer */
        .site-footer {
            background: var(--primary);
            color: rgba(255, 255, 255, 0.8);
            padding-top: 56px;
            margin-top: 0;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1.2fr;
            gap: 40px;
            padding-bottom: 40px;
        }

        .footer-brand .footer-logo {
            font-size: 18px;
            font-weight: 700;
            color: var(--text-light);
            margin-bottom: 12px;
        }

        .footer-brand p {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 0;
            max-width: 320px;
        }

        .footer-col h4 {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-light);
            margin-bottom: 14px;
            letter-spacing: 0.5px;
        }

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

        .footer-col ul li a {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }

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

        .footer-contact p {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.65);
            margin-bottom: 4px;
        }

        .footer-contact .contact-phone {
            font-size: 20px;
            font-weight: 700;
            color: var(--accent);
            margin-bottom: 4px;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding: 18px 0;
        }

        .footer-bottom p {
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
            margin-bottom: 0;
            text-align: center;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .content-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .related-topics {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 30px;
            }
        }

        @media (max-width: 768px) {
            .main-nav {
                position: fixed;
                top: var(--header-height);
                left: 0;
                right: 0;
                background: var(--card-bg);
                flex-direction: column;
                align-items: center;
                gap: 0;
                padding: 24px 0;
                border-bottom: 1px solid var(--border);
                box-shadow: var(--shadow-md);
                display: none;
            }
            .main-nav.mobile-open {
                display: flex;
            }
            .main-nav a {
                font-size: 18px;
                padding: 14px 0;
                display: block;
                width: 100%;
                text-align: center;
            }
            .main-nav a::after {
                bottom: 6px;
            }
            .main-nav .nav-cta {
                margin-top: 12px;
                display: inline-flex;
                font-size: 15px;
                padding: 12px 32px;
            }
            .nav-toggle {
                display: flex;
            }
            .category-hero h1 {
                font-size: 30px;
            }
            .stats-bar {
                gap: 20px;
                padding: 22px 24px;
            }
            .stats-bar .stat-img-wrap {
                max-width: 100%;
                flex-basis: 100%;
                max-height: 160px;
            }
            .stats-bar .stat-img-wrap img {
                height: 160px;
            }
            .content-grid {
                grid-template-columns: 1fr;
            }
            .related-topics {
                grid-template-columns: 1fr;
            }
            .process-steps {
                gap: 14px;
            }
            .process-step {
                min-width: 100%;
            }
            .filter-toolbar {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-box {
                flex-direction: column;
                text-align: center;
                padding: 32px 24px;
            }
            .cta-box p {
                max-width: 100%;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .hot-articles {
                flex-direction: column;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 16px;
                padding-right: 16px;
            }
            .section-title {
                font-size: 24px;
            }
            .category-hero h1 {
                font-size: 24px;
            }
            .stats-bar .stat-number {
                font-size: 24px;
            }
            .stats-bar .stat-item {
                min-width: 100px;
            }
            .breadcrumb-nav ol {
                font-size: 12px;
            }
        }