/* roulang page: index */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }
        *,
        *::before,
        *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: #fff;
        }
        .section-bg {
            background-color: var(--primary-light);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-img {
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .card-footer {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding-top: 12px;
            border-top: 1px solid #f0f2f5;
        }
        .card-tag {
            font-size: 12px;
            color: var(--text-muted);
            letter-spacing: 0.3px;
        }
        .card-link {
            font-size: 13px;
            font-weight: 500;
            color: var(--primary);
            white-space: nowrap;
        }
        .card-link:hover {
            color: var(--primary-dark);
        }
        .grid-2 {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .grid-3 {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .grid-4 {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
        }
        .grid-6 {
            display: grid;
            grid-template-columns: repeat(6, 1fr);
            gap: 20px;
        }
        .stat-number {
            font-size: 36px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .divider {
            height: 1px;
            background: #e8ecf0;
            margin: 0;
        }
        .tag {
            display: inline-block;
            padding: 3px 10px;
            border-radius: 4px;
            font-size: 11px;
            font-weight: 500;
            letter-spacing: 0.5px;
            margin-right: 6px;
            margin-bottom: 4px;
        }
        .tag-blue {
            background: var(--primary-light);
            color: var(--primary);
        }
        .tag-gold {
            background: var(--accent-light);
            color: #8a6d3b;
        }
        .tag-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .tag-gray {
            background: #f0f2f5;
            color: var(--text-secondary);
        }
        .icon-circle {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            flex-shrink: 0;
            transition: all var(--transition);
        }
        .icon-circle:hover {
            background: var(--primary);
            color: #fff;
            transform: scale(1.05);
        }
        .icon-circle-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .icon-circle-accent:hover {
            background: var(--accent);
            color: #fff;
        }
        .list-check {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .list-check li {
            padding: 8px 0 8px 28px;
            position: relative;
            color: var(--text-secondary);
            font-size: 14px;
            line-height: 1.6;
        }
        .list-check li::before {
            content: "\f00c";
            font-family: "Font Awesome 6 Free";
            font-weight: 900;
            position: absolute;
            left: 0;
            top: 9px;
            color: var(--primary);
            font-size: 13px;
        }
        .faq-item {
            border: 1px solid #e8ecf0;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            background: #fff;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            border-color: var(--primary);
            box-shadow: var(--shadow-sm);
        }
        .faq-question {
            width: 100%;
            background: #fff;
            border: none;
            padding: 16px 20px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            text-align: left;
            transition: all var(--transition);
            min-height: 48px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .faq-icon {
            font-size: 14px;
            color: var(--text-muted);
            transition: transform 0.3s ease;
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 20px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.75;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 20px 18px;
        }
        .header {
            position: relative;
            z-index: 100;
            padding-top: 16px;
        }
        .nav-wrapper {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 8px 20px;
            transition: all var(--transition);
            display: flex;
            align-items: center;
            justify-content: space-between;
            max-width: 1140px;
            margin: 0 auto;
            flex-wrap: wrap;
        }
        .nav-wrapper.sticky {
            position: fixed;
            top: 8px;
            left: 50%;
            transform: translateX(-50%);
            width: calc(100% - 32px);
            box-shadow: var(--shadow-md);
            border-radius: 12px;
            z-index: 999;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            text-decoration: none;
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 22px;
        }
        .nav-logo span {
            color: var(--primary);
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--text-main);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-links li {
            margin: 0;
        }
        .nav-links a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links a:hover,
        .nav-links a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            min-height: 44px;
            min-width: 44px;
        }
        .hero {
            position: relative;
            padding: 48px 0 72px;
            overflow: hidden;
        }
        .hero-bg {
            position: absolute;
            inset: 0;
            background: url('/assets/images/27de73b034790221.webp') center/cover no-repeat;
            z-index: 0;
        }
        .hero-bg::after {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(30, 42, 56, 0.88) 0%, rgba(30, 42, 56, 0.65) 40%, rgba(42, 107, 156, 0.55) 100%);
        }
        .hero-content {
            position: relative;
            z-index: 1;
            padding: 60px 0 40px;
            color: #fff;
            display: grid;
            grid-template-columns: 1fr 380px;
            gap: 48px;
            align-items: center;
        }
        .hero-left h1 {
            font-size: 40px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 16px;
            line-height: 1.25;
            letter-spacing: 1px;
        }
        .hero-left .hero-subtitle {
            font-size: 17px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.88);
            max-width: 600px;
            margin-bottom: 24px;
        }
        .hero-left .hero-desc {
            font-size: 15px;
            line-height: 1.75;
            color: rgba(255, 255, 255, 0.75);
            max-width: 620px;
            margin-bottom: 28px;
        }
        .hero-btns {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
        }
        .hero-btns .btn {
            font-size: 15px;
            padding: 13px 28px;
        }
        .hero-btns .btn-primary {
            background: #fff;
            color: var(--primary-dark);
            border: 1px solid #fff;
        }
        .hero-btns .btn-primary:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
            border-color: var(--primary-light);
        }
        .hero-btns .btn-outline {
            border-color: rgba(255, 255, 255, 0.6);
            color: #fff;
            background: transparent;
        }
        .hero-btns .btn-outline:hover {
            background: rgba(255, 255, 255, 0.15);
            border-color: #fff;
            color: #fff;
        }
        .hero-badges {
            display: flex;
            gap: 12px;
            margin-top: 20px;
            flex-wrap: wrap;
        }
        .hero-badge {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            padding: 5px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: rgba(255, 255, 255, 0.15);
            color: #fff;
            backdrop-filter: blur(4px);
        }
        .hero-badge i {
            font-size: 11px;
            color: var(--accent);
        }
        .hero-right {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(16px);
            border-radius: var(--radius-lg);
            padding: 20px;
            border: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.2);
        }
        .hero-right img {
            border-radius: var(--radius-md);
            margin-bottom: 14px;
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .hero-right-title {
            font-size: 16px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
        }
        .hero-right-text {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.75);
            line-height: 1.6;
        }
        .hero-stats {
            display: flex;
            gap: 24px;
            margin-top: 16px;
            padding-top: 14px;
            border-top: 1px solid rgba(255, 255, 255, 0.2);
        }
        .hero-stat-num {
            font-size: 22px;
            font-weight: 700;
            color: #fff;
        }
        .hero-stat-label {
            font-size: 11px;
            color: rgba(255, 255, 255, 0.7);
        }
        .title-underline {
            display: inline-block;
            position: relative;
        }
        .title-underline::after {
            content: '';
            display: block;
            width: 52px;
            height: 3px;
            background: var(--accent);
            margin-top: 8px;
            border-radius: 2px;
        }
        .case-card {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
        }
        .case-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .case-card .card-img {
            aspect-ratio: 16/9;
        }
        .case-card .card-img img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .case-card .card-body {
            padding: 20px 22px;
        }
        .case-result {
            font-size: 13px;
            color: var(--accent);
            font-weight: 600;
            margin-bottom: 6px;
        }
        .case-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
        }
        .stat-block {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 28px 20px;
            text-align: center;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            border-bottom: 3px solid transparent;
        }
        .stat-block:hover {
            border-bottom-color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .stat-number {
            font-size: 34px;
            font-weight: 700;
            color: var(--primary);
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 6px;
        }
        .stat-icon {
            font-size: 28px;
            color: var(--accent);
            margin-bottom: 10px;
        }
        .flow-step {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 22px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }
        .flow-step:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .flow-num {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-weight: 700;
            font-size: 16px;
            flex-shrink: 0;
        }
        .flow-content h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .flow-content p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }
        .news-list-item {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 14px 4px;
            border-bottom: 1px solid #eef1f4;
            transition: all var(--transition);
        }
        .news-list-item:hover {
            padding-left: 10px;
        }
        .news-list-item a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-main);
            flex: 1;
            line-height: 1.5;
        }
        .news-list-item a:hover {
            color: var(--primary);
        }
        .news-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            margin-left: 12px;
        }
        .news-featured {
            background: #fff;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            height: 100%;
        }
        .news-featured img {
            width: 100%;
            aspect-ratio: 16/10;
            object-fit: cover;
        }
        .news-featured-body {
            padding: 20px 22px;
        }
        .news-featured-body h4 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .news-featured-body p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 10px;
        }
        .partner-tag {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 12px 20px;
            background: #fff;
            border-radius: 8px;
            box-shadow: var(--shadow-sm);
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .partner-tag:hover {
            box-shadow: var(--shadow-hover);
            color: var(--primary);
            transform: translateY(-2px);
        }
        .partner-tag i {
            color: var(--accent);
            font-size: 14px;
        }
        .security-item {
            display: flex;
            align-items: center;
            gap: 14px;
            padding: 16px 18px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
        }
        .security-item:hover {
            background: var(--primary-light);
            transform: translateY(-2px);
        }
        .security-item i {
            font-size: 22px;
            color: var(--primary);
            flex-shrink: 0;
        }
        .security-item span {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
        }
        .community-card {
            background: #fff;
            border-radius: var(--radius-md);
            padding: 22px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            height: 100%;
        }
        .community-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .community-quote {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            font-style: italic;
        }
        .community-author {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .community-author .avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            display: flex;
            align-items: center;
            justify-content: center;
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
        }
        .download-row {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
            justify-content: center;
        }
        .download-btn {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            padding: 14px 28px;
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            font-weight: 600;
            font-size: 14px;
            color: var(--text-main);
            transition: all var(--transition);
            border: 1px solid transparent;
        }
        .download-btn:hover {
            border-color: var(--primary);
            color: var(--primary);
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
        }
        .download-btn i {
            font-size: 20px;
            color: var(--primary);
        }
        .footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.85);
            padding: 56px 0 32px;
            margin-top: 0;
        }
        .footer a {
            color: rgba(255, 255, 255, 0.7);
            transition: color var(--transition);
        }
        .footer a:hover {
            color: #fff;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            line-height: 1.7;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul a {
            font-size: 13px;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-bottom a {
            font-size: 12px;
        }
        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            gap: 16px;
            align-items: center;
        }
        @media (max-width: 1024px) {
            .grid-4 {
                grid-template-columns: repeat(2, 1fr);
            }
            .grid-6 {
                grid-template-columns: repeat(3, 1fr);
            }
            .hero-content {
                grid-template-columns: 1fr;
                gap: 32px;
            }
            .hero-right {
                max-width: 480px;
            }
            .footer-grid {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .nav-wrapper {
                padding: 6px 14px;
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                padding: 12px 0 4px;
                gap: 2px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links a {
                padding: 10px 14px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-cta .btn {
                padding: 8px 16px;
                font-size: 13px;
                min-height: 38px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-wrapper.sticky {
                width: calc(100% - 24px);
                top: 6px;
                border-radius: 10px;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-6 {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .hero {
                padding: 20px 0 40px;
            }
            .hero-content {
                padding: 32px 0 20px;
                gap: 24px;
            }
            .hero-left h1 {
                font-size: 30px;
            }
            .hero-left .hero-subtitle {
                font-size: 15px;
            }
            .hero-left .hero-desc {
                font-size: 14px;
            }
            .hero-btns {
                flex-direction: column;
                gap: 10px;
            }
            .hero-btns .btn {
                width: 100%;
                justify-content: center;
            }
            .hero-badges {
                gap: 8px;
            }
            .hero-stats {
                gap: 16px;
                flex-wrap: wrap;
            }
            .stat-number {
                font-size: 28px;
            }
            .section-title {
                font-size: 21px;
            }
            .card-body {
                padding: 16px 18px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
            }
            .flow-step {
                padding: 16px 14px;
            }
            .partner-tag {
                padding: 10px 16px;
                font-size: 12px;
            }
            .security-item {
                padding: 12px 14px;
            }
            .hero-right {
                padding: 14px;
            }
        }
        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }
            .nav-wrapper.sticky {
                width: calc(100% - 16px);
            }
            .hero-left h1 {
                font-size: 26px;
            }
            .stat-number {
                font-size: 24px;
            }
            .section-title {
                font-size: 19px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
                min-height: 40px;
            }
            .grid-2,
            .grid-3,
            .grid-4,
            .grid-6 {
                gap: 12px;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: #fff;
        }
        .section-bg {
            background-color: var(--primary-light);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        /* 导航 */
        .header {
            position: relative;
            z-index: 100;
            padding-top: 12px;
            padding-bottom: 0;
        }
        .nav-wrapper {
            max-width: 1160px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 22px;
            gap: 16px;
            transition: all var(--transition);
            border: 1px solid rgba(208, 217, 226, 0.4);
        }
        .nav-wrapper.scrolled {
            border-radius: var(--radius-sm);
            box-shadow: var(--shadow-md);
            border-color: var(--border);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 22px;
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
            font-weight: 600;
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
        }

        /* 移动端导航 */
        @media (max-width: 768px) {
            .nav-wrapper {
                flex-wrap: wrap;
                padding: 10px 16px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding-top: 10px;
                border-top: 1px solid var(--border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 16px;
                font-size: 15px;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta.open {
                display: flex;
                width: 100%;
                padding-top: 8px;
            }
            .nav-cta.open .btn {
                width: 100%;
            }
        }
        @media (max-width: 520px) {
            .nav-logo span {
                font-size: 16px;
            }
        }

        /* 面包屑 */
        .breadcrumb-section {
            padding: 20px 0 0;
            background: transparent;
        }
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            list-style: none;
            margin: 0;
            padding: 0;
            flex-wrap: wrap;
        }
        .breadcrumb li {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .breadcrumb li + li::before {
            content: ">";
            color: var(--text-muted);
            font-size: 11px;
            margin-right: 2px;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* 分类页头 */
        .category-header {
            padding: 32px 0 24px;
            background: linear-gradient(135deg, var(--primary-light) 0%, #FDF8EF 100%);
            border-radius: 0 0 var(--radius-lg) var(--radius-lg);
            margin-bottom: 32px;
        }
        .category-header .container {
            display: flex;
            align-items: flex-start;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .category-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
            line-height: 1.3;
        }
        .category-header .category-desc {
            font-size: 15px;
            color: var(--text-secondary);
            max-width: 520px;
            line-height: 1.7;
            margin: 0;
        }

        /* 技巧卡片列表 */
        .skill-card-list {
            display: grid;
            grid-template-columns: repeat(2, 1fr);
            gap: 24px;
        }
        .skill-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .skill-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .skill-card .card-img {
            overflow: hidden;
            position: relative;
        }
        .skill-card .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .skill-card:hover .card-img img {
            transform: scale(1.03);
        }
        .skill-card .card-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .skill-card .card-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 12px;
            color: var(--text-muted);
            margin-bottom: 8px;
            flex-wrap: wrap;
        }
        .skill-card .card-meta span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .skill-card h3 {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .skill-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
            flex: 1;
        }
        .skill-card .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
        }
        .skill-card .read-more {
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .skill-card .read-more:hover {
            color: var(--primary-dark);
        }
        .skill-card .read-more i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .skill-card:hover .read-more i {
            transform: translateX(3px);
        }

        /* 精选专题 */
        .featured-skills {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
            margin-top: 16px;
        }
        .featured-skill-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .featured-skill-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .featured-skill-item img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-skill-item:hover img {
            transform: scale(1.03);
        }
        .featured-skill-item .featured-body {
            padding: 18px 20px 20px;
        }
        .featured-skill-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .featured-skill-item p {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
            margin: 0;
        }

        /* 数据条 */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
        }
        .stat-item {
            text-align: center;
            padding: 8px 12px;
            border-right: 1px solid var(--border);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.3;
            margin-bottom: 4px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            text-align: left;
            transition: all var(--transition);
            min-height: 44px;
        }
        .faq-question:hover {
            color: var(--primary);
        }
        .faq-question .fa-chevron-down {
            font-size: 13px;
            color: var(--text-muted);
            transition: transform var(--transition);
            flex-shrink: 0;
        }
        .faq-item.active .faq-question .fa-chevron-down {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 400px;
            padding: 0 24px 18px;
        }
        .faq-answer p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA */
        .cta-section {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
        }
        .cta-section h2 {
            font-size: 26px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .cta-section p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }
        .cta-section .btn {
            background: #fff;
            color: var(--primary);
            border: none;
        }
        .cta-section .btn:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* 相关标签 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud a {
            display: inline-block;
            padding: 6px 16px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            color: var(--text-secondary);
            background: var(--card-bg);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .tag-cloud a:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
        }

        /* 页脚 */
        .footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.7);
            padding: 48px 0 24px;
            margin-top: 48px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 18px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 10px;
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            max-width: 360px;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 6px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 12px;
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.65);
        }
        .footer-legal a:hover {
            color: #fff;
        }
        .footer-legal span {
            color: rgba(255, 255, 255, 0.5);
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .skill-card-list {
                grid-template-columns: repeat(2, 1fr);
            }
            .featured-skills {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
                gap: 12px;
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
            .stat-item:nth-child(1),
            .stat-item:nth-child(2) {
                border-bottom: 1px solid var(--border);
                padding-bottom: 16px;
            }
        }
        @media (max-width: 768px) {
            :root {
                --section-padding: var(--section-padding-mobile);
            }
            .category-header .container {
                flex-direction: column;
                gap: 12px;
            }
            .category-header h1 {
                font-size: 28px;
            }
            .skill-card-list {
                grid-template-columns: 1fr;
            }
            .featured-skills {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
            .cta-section {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .section-title {
                font-size: 22px;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
        }
        @media (max-width: 520px) {
            .stats-bar {
                grid-template-columns: 1fr;
                padding: 20px 16px;
            }
            .stat-item,
            .stat-item:nth-child(2) {
                border-right: none;
                border-bottom: 1px solid var(--border);
                padding-bottom: 14px;
            }
            .stat-item:last-child {
                border-bottom: none;
                padding-bottom: 0;
            }
            .category-header h1 {
                font-size: 24px;
            }
            .skill-card .card-body {
                padding: 14px 16px 18px;
            }
            .skill-card h3 {
                font-size: 16px;
            }
            .featured-skill-item .featured-body {
                padding: 14px 16px 16px;
            }
            .featured-skill-item h4 {
                font-size: 15px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 14px;
            }
            .faq-answer {
                padding: 0 16px;
            }
            .faq-item.active .faq-answer {
                padding: 0 16px 14px;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }

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

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

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }

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

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-sm {
            padding: 48px 0;
        }

        .section-alt {
            background-color: #fff;
        }

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

        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }

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

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

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .badge-outline {
            background: transparent;
            color: var(--text-secondary);
            border: 1px solid var(--border);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
            min-height: 50px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }

        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-img {
            overflow: hidden;
            position: relative;
            flex-shrink: 0;
        }
        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card:hover .card-img img {
            transform: scale(1.04);
        }
        .card-body {
            padding: 20px 22px 22px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.45;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
            flex: 1;
        }
        .card-meta {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 12px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .card-link {
            font-size: 14px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
            transition: all var(--transition);
        }
        .card-link i {
            font-size: 12px;
            transition: transform var(--transition);
        }
        .card-link:hover i {
            transform: translateX(3px);
        }

        /* Header & Nav */
        .header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 14px 20px 0;
            transition: padding var(--transition);
        }
        .header.scrolled {
            padding: 8px 20px 0;
        }
        .nav-wrapper {
            max-width: 1140px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            gap: 16px;
            transition: all var(--transition);
            border: 1px solid rgba(208, 217, 226, 0.5);
        }
        .header.scrolled .nav-wrapper {
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            padding: 8px 18px;
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
            white-space: nowrap;
            flex-shrink: 0;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 22px;
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--text-main);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 4px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-cta {
            flex-shrink: 0;
            margin-left: auto;
        }
        .nav-toggle {
            display: none;
            background: transparent;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: background var(--transition);
            min-height: 44px;
            min-width: 44px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: var(--primary-light);
        }

        /* Breadcrumb */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
            padding: 18px 0 0;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--border);
        }
        .breadcrumb .current {
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Category Hero (non-Hero) */
        .cat-hero {
            background: linear-gradient(135deg, #EAF1F6 0%, #F5F7FA 55%, #F5EFE3 100%);
            padding: 100px 0 52px;
            margin-top: 0;
            position: relative;
            overflow: hidden;
        }
        .cat-hero::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -10%;
            width: 500px;
            height: 500px;
            border-radius: 50%;
            background: rgba(42, 107, 156, 0.04);
            pointer-events: none;
        }
        .cat-hero::after {
            content: '';
            position: absolute;
            bottom: -30%;
            left: -8%;
            width: 380px;
            height: 380px;
            border-radius: 50%;
            background: rgba(201, 160, 92, 0.06);
            pointer-events: none;
        }
        .cat-hero-inner {
            position: relative;
            z-index: 1;
            display: grid;
            grid-template-columns: 1fr 1.4fr;
            gap: 40px;
            align-items: center;
        }
        .cat-hero h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            line-height: 1.25;
            margin-bottom: 10px;
        }
        .cat-hero .cat-tag {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--primary);
            background: rgba(42, 107, 156, 0.1);
            padding: 4px 14px;
            border-radius: 20px;
            margin-bottom: 14px;
        }
        .cat-hero-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 520px;
        }

        /* Article cards grid */
        .guides-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }

        /* Featured / specialty section */
        .specialty-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 20px;
        }
        .specialty-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 22px 24px;
            transition: all var(--transition);
            border: 1px solid rgba(208, 217, 226, 0.4);
            display: flex;
            flex-direction: column;
            gap: 8px;
        }
        .specialty-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-2px);
            border-color: rgba(42, 107, 156, 0.25);
        }
        .specialty-card .icon-circle {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 18px;
            flex-shrink: 0;
            margin-bottom: 4px;
        }
        .specialty-card h3 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            line-height: 1.4;
        }
        .specialty-card p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 4px;
        }
        .specialty-card .text-link {
            font-size: 13px;
            font-weight: 500;
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }

        /* Steps */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .step-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 26px 24px;
            transition: all var(--transition);
            border-top: 3px solid var(--primary);
            text-align: center;
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 14px;
        }
        .step-item h3 {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .step-item p {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
        }

        /* Tag cloud */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
        }
        .tag-cloud .tag {
            display: inline-block;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 13px;
            font-weight: 500;
            background: #fff;
            border: 1px solid var(--border);
            color: var(--text-secondary);
            transition: all var(--transition);
            cursor: default;
        }
        .tag-cloud .tag:hover {
            border-color: var(--primary);
            color: var(--primary);
            background: var(--primary-light);
        }
        .tag-cloud .tag.hot {
            background: rgba(180, 67, 60, 0.08);
            color: var(--red);
            border-color: rgba(180, 67, 60, 0.2);
        }

        /* FAQ */
        .faq-list {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid rgba(208, 217, 226, 0.4);
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 18px 22px;
            background: transparent;
            border: none;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            text-align: left;
            font-family: inherit;
            line-height: 1.5;
            transition: background var(--transition);
            min-height: 52px;
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 12px;
            transition: transform var(--transition);
        }
        .faq-item.open .faq-question .faq-icon {
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 22px;
            color: var(--text-secondary);
            font-size: 15px;
            line-height: 1.8;
        }
        .faq-item.open .faq-answer {
            max-height: 300px;
            padding: 0 22px 20px;
        }

        /* CTA band */
        .cta-band {
            background: linear-gradient(135deg, #1F5278 0%, #2A6B9C 60%, #3579a8 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            text-align: center;
            color: #fff;
            position: relative;
            overflow: hidden;
        }
        .cta-band::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -20%;
            width: 400px;
            height: 400px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.05);
            pointer-events: none;
        }
        .cta-band h2 {
            font-size: 26px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .cta-band p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            max-width: 560px;
            margin: 0 auto 28px;
            line-height: 1.7;
        }
        .cta-band .btn {
            background: #fff;
            color: var(--primary-dark);
            font-weight: 600;
        }
        .cta-band .btn:hover {
            background: var(--accent-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        /* Footer */
        .footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.75);
            padding: 52px 0 28px;
            font-size: 14px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 32px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            letter-spacing: 0.5px;
        }
        .footer-desc {
            font-size: 13px;
            line-height: 1.8;
            color: rgba(255, 255, 255, 0.6);
            max-width: 380px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 14px;
            letter-spacing: 0.3px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.12);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.5);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 10px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.65);
            font-size: 12px;
        }
        .footer-legal a:hover {
            color: #fff;
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .guides-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .specialty-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .nav-links li a {
                padding: 6px 10px;
                font-size: 13px;
            }
            .cat-hero-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .cat-hero h1 {
                font-size: 30px;
            }
        }
        @media (max-width: 768px) {
            .header {
                padding: 10px 12px 0;
            }
            .nav-wrapper {
                padding: 8px 14px;
                flex-wrap: wrap;
                gap: 8px;
            }
            .nav-toggle {
                display: inline-flex;
                margin-left: auto;
            }
            .nav-links {
                display: none;
                width: 100%;
                flex-direction: column;
                align-items: stretch;
                gap: 2px;
                padding: 8px 0 4px;
                border-top: 1px solid var(--border);
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 14px;
                font-size: 15px;
                border-radius: var(--radius-sm);
            }
            .nav-cta {
                margin-left: 0;
            }
            .nav-cta .btn {
                width: 100%;
                justify-content: center;
            }
            .cat-hero {
                padding: 88px 0 40px;
            }
            .cat-hero h1 {
                font-size: 26px;
            }
            .cat-hero-desc {
                font-size: 15px;
            }
            .guides-grid {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .specialty-grid {
                grid-template-columns: 1fr;
                gap: 14px;
            }
            .steps-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-sm {
                padding: 32px 0;
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
            .cta-band {
                padding: 32px 20px;
                border-radius: var(--radius-md);
            }
            .cta-band h2 {
                font-size: 22px;
            }
            .cta-band p {
                font-size: 14px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 8px;
            }
            .breadcrumb {
                font-size: 12px;
                padding: 12px 0 0;
            }
            .card-img img {
                aspect-ratio: 16/9;
            }
        }
        @media (max-width: 520px) {
            .nav-logo span {
                font-size: 16px;
            }
            .nav-logo i {
                font-size: 18px;
            }
            .cat-hero h1 {
                font-size: 24px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 14px;
            }
            .card-body {
                padding: 16px 18px 18px;
            }
            .card-title {
                font-size: 15px;
            }
            .faq-question {
                font-size: 14px;
                padding: 15px 16px;
            }
            .faq-answer {
                font-size: 14px;
            }
            .specialty-card {
                padding: 18px 18px;
            }
            .step-item {
                padding: 20px 16px;
            }
        }

        /* Foundation grid overrides for margin/padding */
        .row {
            margin-left: 0;
            margin-right: 0;
        }
        .columns {
            padding-left: 0;
            padding-right: 0;
        }

/* roulang page: category4 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
            -webkit-text-size-adjust: 100%;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: #fff;
        }
        .section-bg {
            background-color: var(--primary-light);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-img {
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 14px;
        }
        .header {
            position: fixed;
            top: 12px;
            left: 0;
            right: 0;
            z-index: 100;
            padding: 0 16px;
            transition: all var(--transition);
        }
        .header.scrolled .nav-wrapper {
            box-shadow: var(--shadow-md);
            border-radius: 12px;
            background: rgba(255, 255, 255, 0.98);
        }
        .nav-wrapper {
            max-width: 1180px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 8px 20px;
            transition: all var(--transition);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 24px;
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--primary-dark);
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            gap: 4px;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            border-radius: var(--radius-sm);
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover,
        .nav-links li a:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-links li a.active {
            background: var(--primary);
            color: #fff;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            min-height: 44px;
            min-width: 44px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .nav-toggle:hover,
        .nav-toggle:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .nav-cta {
            display: flex;
            align-items: center;
        }
        .community-header {
            background: linear-gradient(135deg, var(--primary-light) 0%, #FFFFFF 55%, #F5EFE3 100%);
            padding: 130px 0 56px;
            border-radius: 0 0 28px 28px;
            position: relative;
            overflow: hidden;
        }
        .community-header::before {
            content: '';
            position: absolute;
            top: -40%;
            right: -15%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(42, 107, 156, 0.08) 0%, transparent 70%);
            border-radius: 50%;
            pointer-events: none;
        }
        .community-header .container {
            position: relative;
            z-index: 1;
        }
        .community-header h1 {
            font-size: 36px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.3;
        }
        .community-header .header-desc {
            font-size: 16px;
            color: var(--text-secondary);
            max-width: 680px;
            line-height: 1.75;
        }
        .community-header .header-meta {
            display: flex;
            align-items: center;
            gap: 20px;
            margin-top: 16px;
            flex-wrap: wrap;
        }
        .community-header .header-meta span {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .community-header .header-meta i {
            color: var(--primary);
        }
        .card-community {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .card-community:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-community .card-img {
            position: relative;
        }
        .card-community .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card-community:hover .card-img img {
            transform: scale(1.04);
        }
        .card-community .badge {
            position: absolute;
            top: 12px;
            left: 12px;
        }
        .card-community .card-body {
            padding: 18px 20px 20px;
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .card-community .card-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .card-community .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
            flex: 1;
        }
        .card-community .card-footer {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding-top: 12px;
            border-top: 1px solid var(--border);
            font-size: 12px;
            color: var(--text-muted);
        }
        .card-community .card-footer .author {
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .card-community .card-footer .author i {
            color: var(--primary);
        }
        .card-community .card-footer .stats {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .card-community .card-footer .stats span {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .sidebar-widget {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            margin-bottom: 20px;
        }
        .sidebar-widget h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 14px;
            line-height: 1.4;
        }
        .sidebar-widget .widget-list {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .sidebar-widget .widget-list li {
            padding: 8px 0;
            border-bottom: 1px solid var(--border);
            font-size: 14px;
            color: var(--text-secondary);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .sidebar-widget .widget-list li:last-child {
            border-bottom: none;
        }
        .sidebar-widget .widget-list li i {
            color: var(--primary);
            font-size: 12px;
        }
        .hot-tag {
            display: inline-block;
            padding: 6px 14px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: var(--primary-light);
            color: var(--primary);
            margin: 4px 4px 4px 0;
            transition: all var(--transition);
            cursor: pointer;
        }
        .hot-tag:hover {
            background: var(--primary);
            color: #fff;
            transform: translateY(-1px);
        }
        .community-stats {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 20px 24px;
            text-align: center;
        }
        .community-stats .stat-number {
            font-size: 28px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
        }
        .community-stats .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            margin-top: 4px;
        }
        .faq-accordion {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }
        .faq-item {
            border-bottom: 1px solid var(--border);
        }
        .faq-item:last-child {
            border-bottom: none;
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 16px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: all var(--transition);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            min-height: 44px;
        }
        .faq-question:hover,
        .faq-question:focus {
            color: var(--primary-dark);
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            transition: transform 0.3s ease;
            color: var(--text-muted);
            flex-shrink: 0;
            margin-left: 12px;
        }
        .faq-question.active .faq-icon {
            transform: rotate(180deg);
            color: var(--primary);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer.active {
            max-height: 200px;
        }
        .faq-answer .faq-answer-inner {
            padding: 0 24px 16px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
        }
        .footer {
            background: var(--text-main);
            color: #fff;
            padding: 56px 0 24px;
            margin-top: 0;
        }
        .footer .container {
            max-width: 1180px;
        }
        .footer-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 32px;
            padding-bottom: 32px;
            border-bottom: 1px solid rgba(255, 255, 255, 0.15);
            margin-bottom: 20px;
        }
        .footer-grid > div:first-child {
            flex: 1 1 280px;
        }
        .footer-grid .footer-col {
            flex: 0 0 auto;
            min-width: 140px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }
        .footer-desc {
            font-size: 13px;
            color: rgba(255, 255, 255, 0.7);
            line-height: 1.7;
            max-width: 320px;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            padding: 0;
            margin: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255, 255, 255, 0.75);
            font-size: 13px;
            transition: color var(--transition);
        }
        .footer-col ul li a:hover,
        .footer-col ul li a:focus {
            color: var(--accent);
        }
        .footer-bottom {
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 12px;
            color: rgba(255, 255, 255, 0.6);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.6);
            font-size: 12px;
        }
        .footer-legal a:hover,
        .footer-legal a:focus {
            color: var(--accent);
        }
        @media (max-width: 1024px) {
            .nav-links {
                gap: 0;
            }
            .nav-links li a {
                padding: 8px 10px;
                font-size: 13px;
            }
            .card-body {
                padding: 16px 18px 18px;
            }
            .card-community .card-body {
                padding: 14px 16px 16px;
            }
            .section {
                padding: 56px 0;
            }
        }
        @media (max-width: 768px) {
            .header {
                top: 8px;
                padding: 0 8px;
            }
            .nav-wrapper {
                padding: 8px 12px;
                border-radius: 12px;
            }
            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                background: #fff;
                border-radius: 12px;
                box-shadow: var(--shadow-md);
                padding: 12px;
                gap: 2px;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li {
                width: 100%;
            }
            .nav-links li a {
                padding: 12px 16px;
                font-size: 14px;
                display: block;
            }
            .nav-cta {
                display: none;
            }
            .community-header {
                padding: 110px 0 40px;
                border-radius: 0 0 20px 20px;
            }
            .community-header h1 {
                font-size: 28px;
            }
            .community-header .header-desc {
                font-size: 14px;
            }
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-title {
                font-size: 22px;
            }
            .section-subtitle {
                font-size: 14px;
                margin-bottom: 24px;
            }
            .card-title {
                font-size: 16px;
            }
            .card-body {
                padding: 14px 16px 16px;
            }
            .card-community .card-body {
                padding: 12px 14px 14px;
            }
            .card-community .card-title {
                font-size: 15px;
            }
            .card-community .card-text {
                font-size: 13px;
            }
            .sidebar-widget {
                padding: 16px 18px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer .faq-answer-inner {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .footer {
                padding: 40px 0 20px;
            }
            .footer-grid {
                flex-direction: column;
                gap: 20px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }
        }
        @media (max-width: 520px) {
            .community-header h1 {
                font-size: 24px;
            }
            .community-header .header-meta {
                gap: 12px;
                font-size: 12px;
            }
            .section-title {
                font-size: 20px;
            }
            .card-community .card-footer {
                flex-direction: column;
                align-items: flex-start;
                gap: 6px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
                min-height: 44px;
            }
            .btn-lg {
                padding: 12px 24px;
                font-size: 14px;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }
        *, *::before, *::after {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: #fff;
        }
        .section-bg {
            background-color: var(--primary-light);
        }
        .section-sm {
            padding: 48px 0;
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-img {
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 12px;
        }
        .card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 8px;
            margin-bottom: 14px;
            flex-wrap: wrap;
        }
        .card-link {
            font-size: 14px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 6px;
        }
        .card-link:hover {
            color: var(--primary-dark);
        }

        /* Header Navigation */
        .header {
            position: relative;
            z-index: 100;
            padding-top: 14px;
            padding-left: 16px;
            padding-right: 16px;
        }
        .nav-wrapper {
            max-width: 1180px;
            margin: 0 auto;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(12px);
            border-radius: var(--radius-lg);
            box-shadow: 0 2px 12px rgba(30, 42, 56, 0.08);
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 10px 20px;
            gap: 16px;
            transition: all var(--transition);
        }
        .header.sticky .nav-wrapper {
            position: fixed;
            top: 8px;
            left: 16px;
            right: 16px;
            max-width: 1148px;
            margin: 0 auto;
            border-radius: 12px;
            box-shadow: 0 4px 20px rgba(30, 42, 56, 0.15);
            z-index: 1000;
        }
        .nav-logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: 700;
            color: var(--text-main);
            letter-spacing: 0.5px;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 22px;
        }
        .nav-logo:hover {
            color: var(--text-main);
        }
        .nav-links {
            display: flex;
            align-items: center;
            list-style: none;
            margin: 0;
            padding: 0;
            gap: 4px;
        }
        .nav-links li a {
            display: inline-block;
            padding: 8px 14px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
        }
        .nav-links li a:hover,
        .nav-links li a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            color: var(--primary);
            background: var(--primary-light);
            font-weight: 600;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px 12px;
            border-radius: 8px;
            min-width: 44px;
            min-height: 44px;
            align-items: center;
            justify-content: center;
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-cta {
            display: block;
        }

        /* Category Header */
        .category-header {
            background: linear-gradient(135deg, #EAF1F6 0%, #F5F7FA 55%, #F5EFE3 100%);
            padding: 56px 0 48px;
            position: relative;
            overflow: hidden;
        }
        .category-header::after {
            content: '';
            position: absolute;
            right: -80px;
            bottom: -80px;
            width: 300px;
            height: 300px;
            border-radius: 50%;
            background: rgba(42, 107, 156, 0.05);
            pointer-events: none;
        }
        .category-header-inner {
            display: grid;
            grid-template-columns: 1fr 1.2fr;
            gap: 36px;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        .category-header h1 {
            font-size: 38px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0;
            line-height: 1.25;
        }
        .category-header .cat-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            margin: 0;
        }
        .breadcrumb {
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 16px;
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .breadcrumb a {
            color: var(--text-muted);
        }
        .breadcrumb a:hover {
            color: var(--primary);
        }
        .breadcrumb .sep {
            color: var(--text-muted);
        }
        .breadcrumb .current {
            color: var(--primary);
            font-weight: 500;
        }

        /* Events Grid */
        .events-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .event-card .card-meta .date-item {
            display: inline-flex;
            align-items: center;
            gap: 4px;
        }
        .event-card .card-meta i {
            color: var(--accent);
            font-size: 12px;
        }
        .event-card .btn {
            margin-top: 4px;
        }

        /* Featured Section */
        .featured-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 24px;
        }
        .featured-card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
            display: flex;
            flex-direction: column;
        }
        .featured-card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .featured-card .featured-img {
            overflow: hidden;
        }
        .featured-card .featured-img img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
            transition: transform 0.4s ease;
        }
        .featured-card:hover .featured-img img {
            transform: scale(1.03);
        }
        .featured-card .featured-body {
            padding: 20px 22px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .featured-card .featured-title {
            font-size: 17px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .featured-card .featured-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.65;
            margin-bottom: 16px;
            flex: 1;
        }
        .featured-tag {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            background: var(--accent-light);
            color: var(--accent);
            margin-bottom: 12px;
            align-self: flex-start;
        }

        /* Stats Bar */
        .stats-bar {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 24px;
            border: 1px solid var(--border);
        }
        .stat-item {
            text-align: center;
            padding: 8px 12px;
            border-right: 1px solid var(--border);
        }
        .stat-item:last-child {
            border-right: none;
        }
        .stat-number {
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            line-height: 1.2;
            margin-bottom: 6px;
        }
        .stat-label {
            font-size: 13px;
            color: var(--text-secondary);
            font-weight: 500;
        }

        /* Steps */
        .steps-row {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 24px;
            counter-reset: step;
        }
        .step-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 20px;
            text-align: center;
            position: relative;
            counter-increment: step;
            transition: all var(--transition);
        }
        .step-item:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .step-number {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary);
            color: #fff;
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 16px;
        }
        .step-item .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
        }
        .step-item .step-desc {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: 780px;
            margin: 0 auto;
        }
        .faq-item {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 12px;
            overflow: hidden;
            border: 1px solid var(--border);
        }
        .faq-question {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 18px 24px;
            cursor: pointer;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            background: none;
            border: none;
            width: 100%;
            text-align: left;
            transition: all var(--transition);
            gap: 12px;
            min-height: 52px;
        }
        .faq-question:hover {
            background: var(--primary-light);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            color: var(--primary);
            transition: transform var(--transition);
            font-size: 14px;
        }
        .faq-item.active .faq-icon {
            transform: rotate(45deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0 24px;
        }
        .faq-item.active .faq-answer {
            max-height: 300px;
            padding: 0 24px 18px;
        }
        .faq-answer p {
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin: 0;
        }

        /* CTA Section */
        .cta-box {
            background: linear-gradient(135deg, #1E2A38 0%, #2A4A5E 50%, #2A6B9C 100%);
            border-radius: var(--radius-lg);
            padding: 56px 40px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        .cta-box::before {
            content: '';
            position: absolute;
            left: -60px;
            top: -60px;
            width: 220px;
            height: 220px;
            border-radius: 50%;
            background: rgba(201, 160, 92, 0.15);
            pointer-events: none;
        }
        .cta-box::after {
            content: '';
            position: absolute;
            right: -40px;
            bottom: -40px;
            width: 180px;
            height: 180px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.06);
            pointer-events: none;
        }
        .cta-box h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
            position: relative;
            z-index: 1;
        }
        .cta-box p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.75);
            margin-bottom: 28px;
            position: relative;
            z-index: 1;
        }
        .cta-box .btn {
            position: relative;
            z-index: 1;
        }

        /* Footer */
        .footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 28px;
            margin-top: 0;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.6);
            margin-bottom: 0;
            max-width: 360px;
        }
        .footer-col h5 {
            font-size: 14px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 10px;
        }
        .footer-col ul li a {
            font-size: 14px;
            color: rgba(255, 255, 255, 0.65);
            transition: color var(--transition);
        }
        .footer-col ul li a:hover {
            color: var(--accent);
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            padding-top: 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255, 255, 255, 0.55);
        }
        .footer-legal a:hover {
            color: var(--accent);
        }

        /* Responsive */
        @media (max-width: 1024px) {
            .events-grid,
            .featured-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .stats-bar {
                grid-template-columns: repeat(2, 1fr);
            }
            .step-item {
                border-right: none;
            }
            .stat-item:nth-child(2) {
                border-right: none;
            }
            .steps-row {
                grid-template-columns: repeat(2, 1fr);
            }
        }
        @media (max-width: 768px) {
            .section {
                padding: var(--section-padding-mobile);
            }
            .section-sm {
                padding: 32px 0;
            }
            .header {
                padding-top: 10px;
                padding-left: 10px;
                padding-right: 10px;
            }
            .nav-wrapper {
                padding: 8px 14px;
                border-radius: 12px;
                flex-wrap: wrap;
            }
            .nav-links {
                display: none;
                flex-direction: column;
                width: 100%;
                gap: 2px;
                padding-top: 10px;
                order: 10;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                display: block;
                padding: 12px 14px;
                font-size: 15px;
                border-radius: 8px;
            }
            .nav-toggle {
                display: inline-flex;
            }
            .nav-cta {
                display: none;
            }
            .nav-cta.mobile-show {
                display: block;
                order: 11;
                width: 100%;
                padding-top: 8px;
            }
            .cards-grid,
            .events-grid,
            .featured-grid {
                grid-template-columns: 1fr;
            }
            .stats-bar {
                grid-template-columns: 1fr 1fr;
                gap: 12px;
                padding: 20px 16px;
            }
            .stat-item {
                border-right: none;
                padding: 8px 6px;
            }
            .stat-number {
                font-size: 24px;
            }
            .steps-row {
                grid-template-columns: 1fr;
                gap: 16px;
            }
            .category-header {
                padding: 36px 0 32px;
            }
            .category-header-inner {
                grid-template-columns: 1fr;
                gap: 20px;
            }
            .category-header h1 {
                font-size: 30px;
            }
            .section-title {
                font-size: 22px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 28px;
            }
            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
                gap: 10px;
            }
            .cta-box {
                padding: 40px 20px;
            }
            .cta-box h2 {
                font-size: 22px;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
            .btn {
                padding: 10px 18px;
                font-size: 13px;
            }
            .header.sticky .nav-wrapper {
                left: 10px;
                right: 10px;
                top: 6px;
            }
        }
        @media (max-width: 520px) {
            .stats-bar {
                grid-template-columns: 1fr;
                gap: 4px;
            }
            .stat-item {
                padding: 12px 6px;
            }
            .section-title {
                font-size: 20px;
            }
            .category-header h1 {
                font-size: 26px;
            }
            .category-header .cat-desc {
                font-size: 14px;
            }
            .btn-lg {
                padding: 12px 22px;
                font-size: 14px;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }

        * {
            box-sizing: border-box;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }
        a {
            color: var(--primary);
            text-decoration: none;
            transition: color var(--transition);
        }
        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }
        img {
            max-width: 100%;
            height: auto;
            display: block;
        }
        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }
        .section {
            padding: var(--section-padding);
        }
        .section-alt {
            background-color: #fff;
        }
        .section-bg {
            background-color: var(--primary-light);
        }
        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }
        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }
        .text-center {
            text-align: center;
        }
        .text-muted {
            color: var(--text-muted);
        }
        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }
        .badge-primary {
            background: var(--primary-light);
            color: var(--primary);
        }
        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }
        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
        }
        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-outline {
            background: transparent;
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        .btn-outline:hover,
        .btn-outline:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
            transform: translateY(-2px);
        }
        .btn-accent {
            background: transparent;
            color: var(--accent);
            border: 1px solid var(--accent);
        }
        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }
        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }
        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }
        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }
        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }
        .btn:focus-visible,
        a:focus-visible,
        button:focus-visible {
            outline: 2px solid var(--primary);
            outline-offset: 2px;
        }
        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }
        .card:hover {
            box-shadow: var(--shadow-hover);
            transform: translateY(-3px);
        }
        .card-img {
            overflow: hidden;
            position: relative;
        }
        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .card:hover .card-img img {
            transform: scale(1.03);
        }
        .card-body {
            padding: 20px 24px 24px;
        }
        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }
        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 12px;
        }
        .card-meta {
            font-size: 12px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 12px;
            flex-wrap: wrap;
        }

        /* 导航 */
        .header {
            padding: 12px 20px 0;
            position: relative;
            z-index: 100;
        }
        .nav-wrapper {
            max-width: 1180px;
            margin: 0 auto;
            background: #fff;
            border-radius: var(--radius-lg);
            padding: 12px 24px;
            box-shadow: var(--shadow-sm);
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            position: relative;
            transition: all var(--transition);
        }
        .header.is-sticky .nav-wrapper {
            position: fixed;
            top: 12px;
            left: 20px;
            right: 20px;
            max-width: 1180px;
            margin: 0 auto;
            box-shadow: var(--shadow-md);
            border-radius: 12px;
            z-index: 1000;
            animation: navSlideDown 0.3s ease;
        }
        @keyframes navSlideDown {
            from { transform: translateY(-20px); opacity: 0; }
            to { transform: translateY(0); opacity: 1; }
        }
        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
            text-decoration: none;
        }
        .nav-logo i {
            color: var(--primary);
            font-size: 24px;
        }
        .nav-logo span {
            color: var(--text-main);
        }
        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--text-main);
        }
        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .nav-links li a {
            display: block;
            padding: 10px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 30px;
            transition: all var(--transition);
            white-space: nowrap;
        }
        .nav-links li a:hover {
            color: var(--primary-dark);
            background: var(--primary-light);
        }
        .nav-links li a.active {
            color: #fff;
            background: var(--primary);
        }
        .nav-cta {
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: var(--radius-sm);
            transition: all var(--transition);
        }
        .nav-toggle:hover {
            background: var(--primary-light);
            color: var(--primary);
        }
        .nav-toggle.active {
            color: var(--primary);
        }

        /* 移动端导航 */
        @media (max-width: 992px) {
            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 10px);
                left: 0;
                right: 0;
                background: #fff;
                border-radius: var(--radius-md);
                box-shadow: var(--shadow-hover);
                padding: 16px;
                flex-direction: column;
                align-items: stretch;
                gap: 4px;
                z-index: 1000;
            }
            .nav-links.open {
                display: flex;
            }
            .nav-links li a {
                padding: 12px 18px;
                border-radius: 8px;
                font-size: 15px;
            }
            .nav-toggle {
                display: block;
            }
            .nav-cta {
                display: none;
            }
            .nav-wrapper {
                flex-wrap: wrap;
            }
        }
        @media (max-width: 520px) {
            .header {
                padding: 8px 10px 0;
            }
            .nav-wrapper {
                padding: 10px 16px;
            }
            .nav-logo {
                font-size: 17px;
            }
            .nav-logo i {
                font-size: 20px;
            }
            .nav-links li a {
                font-size: 14px;
                padding: 10px 14px;
            }
        }

        /* 分类页头 */
        .page-header {
            background: linear-gradient(135deg, #EAF1F6 0%, #F5F7FA 55%, #FDFDFD 100%);
            padding: 36px 0 40px;
            margin-top: 16px;
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
        }
        .page-header .container {
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .page-header-left {
            flex: 1 1 50%;
            min-width: 260px;
        }
        .page-header-right {
            flex: 1 1 38%;
            min-width: 260px;
            text-align: right;
        }
        .page-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            margin: 0 0 8px;
            line-height: 1.3;
        }
        .page-header .breadcrumb {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 13px;
            color: var(--text-muted);
            margin-bottom: 12px;
        }
        .page-header .breadcrumb a {
            color: var(--text-muted);
        }
        .page-header .breadcrumb a:hover {
            color: var(--primary);
        }
        .page-header .breadcrumb span {
            color: var(--text-secondary);
        }
        .page-header-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.75;
            max-width: 460px;
            margin-left: auto;
        }

        /* 面包屑 */
        .breadcrumb-bar {
            padding: 16px 0 0;
            background: transparent;
        }
        .breadcrumb-bar .container {
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 13px;
            color: var(--text-muted);
        }
        .breadcrumb-bar a {
            color: var(--text-muted);
        }
        .breadcrumb-bar a:hover {
            color: var(--primary);
        }
        .breadcrumb-bar span {
            color: var(--text-secondary);
        }

        /* 资讯卡片 */
        .news-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }
        .news-card .card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
        }
        .news-card .card-text {
            flex: 1;
        }
        .news-card .card-link {
            align-self: flex-start;
            font-size: 13px;
            font-weight: 600;
            color: var(--primary);
            display: inline-flex;
            align-items: center;
            gap: 4px;
            transition: all var(--transition);
        }
        .news-card .card-link:hover {
            color: var(--primary-dark);
            gap: 8px;
        }

        /* 版本更新列表 */
        .update-list {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            padding: 28px 32px;
        }
        .update-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            padding: 18px 0;
            border-bottom: 1px solid #EDF1F5;
        }
        .update-item:first-child {
            padding-top: 0;
        }
        .update-item:last-child {
            border-bottom: none;
            padding-bottom: 0;
        }
        .update-icon {
            flex-shrink: 0;
            width: 42px;
            height: 42px;
            background: var(--primary-light);
            color: var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
        }
        .update-content {
            flex: 1;
        }
        .update-version {
            font-size: 14px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }
        .update-desc {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.6;
        }
        .update-date {
            font-size: 12px;
            color: var(--text-muted);
            white-space: nowrap;
            padding-top: 4px;
        }

        /* 热点话题 */
        .topic-card {
            position: relative;
            border-radius: var(--radius-md);
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            background: #fff;
            transition: all var(--transition);
            display: block;
            min-height: 180px;
        }
        .topic-card img {
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }
        .topic-card-overlay {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(30,42,56,0.85) 0%, rgba(30,42,56,0.35) 60%, transparent 100%);
        }
        .topic-card h3 {
            font-size: 17px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .topic-card p {
            font-size: 13px;
            color: rgba(255,255,255,0.85);
            margin: 0;
            line-height: 1.5;
        }
        .topic-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }

        /* 标签云 */
        .tag-cloud {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            justify-content: center;
            padding: 32px 0 16px;
        }
        .tag-link {
            display: inline-block;
            padding: 8px 20px;
            background: #fff;
            border-radius: 30px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border: 1px solid var(--border);
            transition: all var(--transition);
        }
        .tag-link:hover {
            color: var(--primary);
            border-color: var(--primary);
            background: var(--primary-light);
            transform: translateY(-2px);
        }

        /* FAQ */
        .faq-wrapper {
            max-width: 820px;
            margin: 0 auto;
        }
        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            margin-bottom: 16px;
            overflow: hidden;
            transition: all var(--transition);
        }
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        .faq-question {
            width: 100%;
            background: none;
            border: none;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            text-align: left;
            transition: all var(--transition);
            min-height: 44px;
        }
        .faq-question:hover {
            background: var(--primary-light);
            color: var(--primary-dark);
        }
        .faq-question .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            background: var(--primary-light);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
            color: var(--primary);
            transition: all var(--transition);
        }
        .faq-question.active .faq-icon {
            background: var(--primary);
            color: #fff;
            transform: rotate(180deg);
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease;
        }
        .faq-answer-content {
            padding: 0 24px 20px;
            font-size: 15px;
            color: var(--text-secondary);
            line-height: 1.75;
        }
        .faq-answer.open {
            max-height: 400px;
        }

        /* 底部CTA */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 24px;
            flex-wrap: wrap;
        }
        .cta-banner-content {
            flex: 1 1 60%;
            min-width: 260px;
        }
        .cta-banner h2 {
            font-size: 24px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 8px;
        }
        .cta-banner p {
            font-size: 15px;
            color: rgba(255,255,255,0.85);
            margin: 0;
        }
        .cta-banner .btn {
            flex-shrink: 0;
        }
        .btn-light {
            background: #fff;
            color: var(--primary);
        }
        .btn-light:hover,
        .btn-light:focus {
            background: var(--primary-light);
            color: var(--primary-dark);
        }

        /* Footer */
        .footer {
            background: #1E2A38;
            color: rgba(255,255,255,0.85);
            padding: 48px 0 28px;
            margin-top: 64px;
        }
        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 36px;
            margin-bottom: 32px;
        }
        .footer-brand {
            font-size: 20px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 8px;
        }
        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255,255,255,0.7);
            max-width: 360px;
            margin: 0;
        }
        .footer-col h5 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 12px;
        }
        .footer-col ul {
            list-style: none;
            margin: 0;
            padding: 0;
        }
        .footer-col ul li {
            margin-bottom: 8px;
        }
        .footer-col ul li a {
            color: rgba(255,255,255,0.7);
            font-size: 14px;
            transition: all var(--transition);
        }
        .footer-col ul li a:hover {
            color: #fff;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255,255,255,0.15);
            padding-top: 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            flex-wrap: wrap;
            font-size: 13px;
            color: rgba(255,255,255,0.6);
        }
        .footer-legal {
            display: flex;
            align-items: center;
            gap: 8px;
            flex-wrap: wrap;
        }
        .footer-legal a {
            color: rgba(255,255,255,0.6);
        }
        .footer-legal a:hover {
            color: #fff;
        }

        /* 响应式调整 */
        @media (max-width: 768px) {
            :root {
                --section-padding: 48px 0;
                --section-padding-mobile: 32px 0;
            }
            .section {
                padding: var(--section-padding-mobile);
            }
            .page-header {
                padding: 24px 16px 28px;
                margin-top: 8px;
            }
            .page-header h1 {
                font-size: 28px;
            }
            .page-header-desc {
                font-size: 15px;
            }
            .footer-grid {
                grid-template-columns: 1fr;
                gap: 24px;
            }
            .cta-banner {
                padding: 32px 24px;
                flex-direction: column;
                text-align: center;
            }
            .cta-banner .btn {
                width: 100%;
                justify-content: center;
            }
            .update-list {
                padding: 20px 16px;
            }
            .update-item {
                flex-wrap: wrap;
                gap: 8px;
            }
            .update-date {
                padding-top: 0;
            }
        }
        @media (max-width: 520px) {
            .page-header h1 {
                font-size: 24px;
            }
            .section-title {
                font-size: 22px;
            }
            .card-body {
                padding: 16px 18px 20px;
            }
            .faq-question {
                padding: 14px 16px;
                font-size: 15px;
            }
            .faq-answer-content {
                padding: 0 16px 14px;
                font-size: 14px;
            }
            .footer-bottom {
                flex-direction: column;
                text-align: center;
                gap: 12px;
            }
            .tag-link {
                padding: 7px 16px;
                font-size: 13px;
            }
        }
        @media (max-width: 1024px) {
            .page-header .container {
                flex-direction: column;
                align-items: flex-start;
            }
            .page-header-right {
                text-align: left;
            }
            .page-header-desc {
                margin-left: 0;
            }
        }

/* roulang page: category6 */
:root {
            --primary: #2A6B9C;
            --primary-dark: #1F5278;
            --primary-light: #EAF1F6;
            --accent: #C9A05C;
            --accent-light: #F5EFE3;
            --red: #B4433C;
            --bg: #F5F7FA;
            --card-bg: #FFFFFF;
            --text-main: #1E2A38;
            --text-secondary: #5A6B7F;
            --text-muted: #8A96A5;
            --border: #D0D9E2;
            --shadow-sm: 0 2px 8px rgba(30, 42, 56, 0.06);
            --shadow-md: 0 4px 16px rgba(30, 42, 56, 0.10);
            --shadow-hover: 0 8px 24px rgba(30, 42, 56, 0.12);
            --radius-sm: 6px;
            --radius-md: 10px;
            --radius-lg: 16px;
            --transition: 0.25s ease;
            --section-padding: 72px 0;
            --section-padding-mobile: 40px 0;
        }

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Microsoft YaHei", "Noto Sans CJK SC", "Helvetica Neue", Arial, sans-serif;
            font-size: 15px;
            font-weight: 400;
            line-height: 1.75;
            color: var(--text-main);
            background-color: var(--bg);
            margin: 0;
            -webkit-font-smoothing: antialiased;
            -moz-osx-font-smoothing: grayscale;
        }

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

        a:hover,
        a:focus {
            color: var(--primary-dark);
            text-decoration: none;
        }

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

        .container {
            max-width: 1180px;
            margin: 0 auto;
            padding-left: 20px;
            padding-right: 20px;
        }

        .section {
            padding: var(--section-padding);
        }

        .section-alt {
            background-color: #fff;
        }

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

        .section-title {
            font-size: 26px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 12px;
            line-height: 1.35;
        }

        .section-subtitle {
            font-size: 16px;
            color: var(--text-secondary);
            margin-bottom: 36px;
            line-height: 1.7;
            max-width: 720px;
        }

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

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

        .badge {
            display: inline-block;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 500;
            line-height: 1.5;
            letter-spacing: 0.4px;
        }

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

        .badge-accent {
            background: var(--accent-light);
            color: var(--accent);
        }

        .badge-red {
            background: rgba(180, 67, 60, 0.1);
            color: var(--red);
        }

        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            border-radius: var(--radius-sm);
            padding: 12px 24px;
            font-size: 14px;
            font-weight: 600;
            line-height: 1.5;
            cursor: pointer;
            transition: all var(--transition);
            border: none;
            text-align: center;
            min-height: 44px;
            white-space: nowrap;
        }

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

        .btn-primary:hover,
        .btn-primary:focus {
            background: var(--primary-dark);
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

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

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

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

        .btn-accent:hover,
        .btn-accent:focus {
            background: var(--accent-light);
            color: #8a6d3b;
            transform: translateY(-2px);
        }

        .btn-cta {
            background: var(--accent);
            color: #fff;
            border: 1px solid var(--accent);
            padding: 14px 32px;
            font-size: 15px;
        }

        .btn-cta:hover,
        .btn-cta:focus {
            background: #b8924b;
            color: #fff;
            transform: translateY(-2px);
            box-shadow: var(--shadow-hover);
        }

        .btn-sm {
            padding: 8px 16px;
            font-size: 13px;
            min-height: 36px;
        }

        .btn-lg {
            padding: 14px 30px;
            font-size: 16px;
        }

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

        .card {
            background: var(--card-bg);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all var(--transition);
        }

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

        .card-img {
            overflow: hidden;
            position: relative;
        }

        .card-img img {
            transition: transform 0.4s ease;
            width: 100%;
            aspect-ratio: 16/9;
            object-fit: cover;
        }

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

        .card-body {
            padding: 20px 24px 24px;
        }

        .card-title {
            font-size: 18px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 8px;
            line-height: 1.4;
        }

        .card-text {
            font-size: 14px;
            color: var(--text-secondary);
            line-height: 1.7;
            margin-bottom: 16px;
        }

        /* 导航样式 */
        .header {
            padding-top: 14px;
            position: relative;
            z-index: 100;
        }

        .nav-wrapper {
            max-width: 1140px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: rgba(255, 255, 255, 0.95);
            border-radius: var(--radius-lg);
            padding: 10px 24px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            position: relative;
        }

        .header.scrolled .nav-wrapper {
            position: fixed;
            top: 12px;
            left: 20px;
            right: 20px;
            max-width: 1140px;
            margin: 0 auto;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            background: #fff;
            z-index: 1000;
        }

        .nav-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }

        .nav-logo i {
            color: var(--primary);
            font-size: 24px;
        }

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

        .nav-logo:hover,
        .nav-logo:focus {
            color: var(--primary);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 6px;
            list-style: none;
            margin: 0;
            padding: 0;
        }

        .nav-links li a {
            display: block;
            padding: 8px 16px;
            font-size: 14px;
            font-weight: 500;
            color: var(--text-secondary);
            border-radius: 8px;
            transition: all var(--transition);
            white-space: nowrap;
        }

        .nav-links li a:hover,
        .nav-links li a:focus {
            color: var(--primary);
            background: var(--primary-light);
        }

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

        .nav-cta {
            flex-shrink: 0;
        }

        .nav-toggle {
            display: none;
            background: none;
            border: none;
            font-size: 24px;
            color: var(--text-main);
            cursor: pointer;
            padding: 8px;
            border-radius: 6px;
        }

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

        /* 面包屑 */
        .breadcrumb-bar {
            padding: 18px 0 0;
            font-size: 13px;
            color: var(--text-muted);
        }

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

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

        .breadcrumb-bar .separator {
            margin: 0 8px;
            color: var(--border);
        }

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

        /* 分类页头 */
        .category-header {
            padding: 48px 0 32px;
            background: linear-gradient(135deg, #EAF1F6 0%, #F5F7FA 60%, #FFFFFF 100%);
            position: relative;
            overflow: hidden;
        }

        .category-header .header-bg {
            position: absolute;
            top: 0;
            right: 0;
            bottom: 0;
            width: 45%;
            background-size: cover;
            background-position: center;
            opacity: 0.15;
            pointer-events: none;
            border-radius: 0 0 0 24px;
        }

        .category-header .container {
            position: relative;
            z-index: 2;
        }

        .category-header h1 {
            font-size: 34px;
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 10px;
            line-height: 1.3;
        }

        .category-header .header-desc {
            font-size: 16px;
            color: var(--text-secondary);
            line-height: 1.8;
            max-width: 560px;
        }

        /* 下载卡片 */
        .download-card {
            display: flex;
            flex-direction: column;
            height: 100%;
        }

        .download-card .card-img {
            aspect-ratio: 16/9;
            min-height: 180px;
        }

        .download-card .card-img img {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

        .download-card .platform-badge {
            position: absolute;
            top: 12px;
            left: 12px;
            z-index: 2;
        }

        .download-card .card-body {
            display: flex;
            flex-direction: column;
            flex: 1;
        }

        .download-card .version-info {
            display: flex;
            flex-wrap: wrap;
            gap: 8px;
            margin-bottom: 12px;
        }

        .download-card .version-info span {
            font-size: 12px;
            color: var(--text-muted);
            background: var(--bg);
            padding: 3px 10px;
            border-radius: 4px;
        }

        .download-card .btn-wrap {
            margin-top: auto;
            display: flex;
            gap: 10px;
            flex-wrap: wrap;
        }

        /* 安装步骤 */
        .step-row {
            display: flex;
            gap: 20px;
            flex-wrap: wrap;
        }

        .step-item {
            flex: 1;
            min-width: 240px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 24px 22px;
            box-shadow: var(--shadow-sm);
            border-left: 3px solid var(--primary);
            transition: all var(--transition);
        }

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

        .step-num {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 700;
            font-size: 14px;
            margin-bottom: 12px;
        }

        .step-title {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

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

        /* 系统要求条 */
        .requirement-list {
            display: flex;
            gap: 16px;
            flex-wrap: wrap;
        }

        .requirement-item {
            flex: 1;
            min-width: 200px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 20px 18px;
            box-shadow: var(--shadow-sm);
            text-align: center;
            border-top: 3px solid var(--accent);
        }

        .requirement-item .req-icon {
            font-size: 28px;
            color: var(--primary);
            margin-bottom: 10px;
        }

        .requirement-item .req-title {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
        }

        .requirement-item .req-detail {
            font-size: 13px;
            color: var(--text-secondary);
            line-height: 1.6;
        }

        /* 更新列表 */
        .update-list {
            display: flex;
            flex-direction: column;
            gap: 14px;
        }

        .update-item {
            display: flex;
            align-items: flex-start;
            gap: 16px;
            background: #fff;
            border-radius: var(--radius-md);
            padding: 18px 20px;
            box-shadow: var(--shadow-sm);
            transition: all var(--transition);
            cursor: default;
        }

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

        .update-version {
            flex-shrink: 0;
            background: var(--primary-light);
            color: var(--primary);
            font-weight: 600;
            font-size: 13px;
            padding: 5px 14px;
            border-radius: 20px;
            white-space: nowrap;
        }

        .update-content h4 {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 4px;
        }

        .update-content p {
            font-size: 13px;
            color: var(--text-secondary);
            margin: 0;
            line-height: 1.6;
        }

        /* FAQ */
        .faq-list {
            max-width: 760px;
            margin: 0 auto;
        }

        .faq-item {
            background: #fff;
            border-radius: var(--radius-md);
            margin-bottom: 12px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            gap: 16px;
            padding: 16px 20px;
            background: none;
            border: none;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            cursor: pointer;
            text-align: left;
            min-height: 44px;
            transition: all var(--transition);
        }

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

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

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

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.3s ease;
            padding: 0 20px;
        }

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

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

        /* CTA区 */
        .cta-banner {
            background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
            border-radius: var(--radius-lg);
            padding: 48px 36px;
            text-align: center;
            color: #fff;
        }

        .cta-banner h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 10px;
            color: #fff;
        }

        .cta-banner p {
            font-size: 15px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 24px;
            max-width: 560px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-banner .btn-cta {
            background: var(--accent);
            border-color: var(--accent);
        }

        /* 页脚 */
        .footer {
            background: #1E2A38;
            color: rgba(255, 255, 255, 0.75);
            padding: 56px 0 24px;
            margin-top: 60px;
        }

        .footer .container {
            max-width: 1180px;
        }

        .footer-grid {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 36px;
        }

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

        .footer-desc {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.65);
            max-width: 360px;
            margin-bottom: 0;
        }

        .footer-col h5 {
            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: 8px;
        }

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

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

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding-top: 20px;
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            justify-content: space-between;
            gap: 12px;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.55);
        }

        .footer-legal {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            gap: 10px;
        }

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

        .footer-legal a:hover {
            color: #fff;
            text-decoration: underline;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .section {
                padding: 56px 0;
            }

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

            .category-header .header-bg {
                width: 50%;
                opacity: 0.1;
            }
        }

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

            .category-header {
                padding: 32px 0 24px;
            }

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

            .category-header .header-desc {
                font-size: 14px;
            }

            .nav-wrapper {
                padding: 8px 16px;
                border-radius: 12px;
            }

            .nav-toggle {
                display: flex;
                align-items: center;
                justify-content: center;
                min-width: 44px;
                min-height: 44px;
            }

            .nav-links {
                display: none;
                position: absolute;
                top: calc(100% + 8px);
                left: 0;
                right: 0;
                flex-direction: column;
                align-items: stretch;
                background: #fff;
                border-radius: 12px;
                box-shadow: var(--shadow-hover);
                padding: 12px;
                gap: 2px;
                z-index: 1001;
            }

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

            .nav-links li a {
                padding: 12px 16px;
                font-size: 15px;
            }

            .nav-cta {
                display: none;
            }

            .header.scrolled .nav-wrapper {
                position: fixed;
                top: 8px;
                left: 8px;
                right: 8px;
                border-radius: 10px;
                max-width: none;
            }

            .step-row {
                flex-direction: column;
            }

            .requirement-list {
                flex-direction: column;
            }

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

            .footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .download-card .btn-wrap {
                flex-direction: column;
            }

            .download-card .btn-wrap .btn {
                width: 100%;
            }

            .cta-banner {
                padding: 32px 20px;
            }

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

            .update-item {
                flex-direction: column;
                gap: 8px;
            }

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

            .card-body {
                padding: 16px 18px 20px;
            }

            .faq-question {
                font-size: 14px;
                padding: 14px 16px;
            }

            .faq-answer p {
                font-size: 14px;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 14px;
                padding-right: 14px;
            }

            .nav-wrapper {
                padding: 6px 12px;
            }

            .nav-logo {
                font-size: 17px;
                gap: 6px;
            }

            .nav-logo i {
                font-size: 20px;
            }

            .header {
                padding-top: 8px;
            }

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

            .section-title {
                font-size: 19px;
            }

            .section-subtitle {
                font-size: 14px;
            }

            .btn {
                padding: 10px 18px;
                font-size: 13px;
                min-height: 40px;
            }

            .btn-lg {
                padding: 12px 22px;
                font-size: 14px;
            }

            .step-item {
                padding: 18px 16px;
            }

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

            .footer {
                padding: 40px 0 16px;
                margin-top: 40px;
            }
        }