/* roulang page: index */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }
        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }
        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }
        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }
        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }
        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }
        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }
        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }
        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }
        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }
        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }
        .nav-transparent .nav-logo {
            color: #ffffff;
        }
        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }
        .mobile-menu.open {
            display: flex;
        }
        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }
        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }
        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* Hero Bento */
        .hero-bento-grid {
            display: grid;
            grid-template-columns: 1fr;
            gap: 1.25rem;
            align-items: stretch;
        }
        @media (min-width: 768px) {
            .hero-bento-grid {
                grid-template-columns: 1.5fr 1fr;
                grid-template-rows: auto auto;
                gap: 1.5rem;
            }
            .hero-main-block {
                grid-row: 1 / 3;
            }
            .hero-sub-block-top {
                grid-column: 2;
                grid-row: 1;
            }
            .hero-sub-block-bottom {
                grid-column: 2;
                grid-row: 2;
            }
        }
        @media (min-width: 1024px) {
            .hero-bento-grid {
                grid-template-columns: 1.6fr 1fr 1fr;
                grid-template-rows: 1fr 1fr;
                gap: 1.5rem;
            }
            .hero-main-block {
                grid-column: 1;
                grid-row: 1 / 3;
            }
            .hero-sub-block-top {
                grid-column: 2;
                grid-row: 1;
            }
            .hero-sub-block-bottom {
                grid-column: 3;
                grid-row: 1;
            }
            .hero-cta-strip {
                grid-column: 2 / 4;
                grid-row: 2;
            }
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }
        .card-interactive {
            cursor: pointer;
        }

        /* 按钮 */
        .btn {
            display: inline-flex;
            align-items: center;
            justify-content: center;
            padding: 0.75rem 1.5rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.2s ease;
            text-decoration: none;
            white-space: nowrap;
            border: 2px solid transparent;
            line-height: 1.4;
        }
        .btn:hover {
            text-decoration: none;
        }
        .btn-primary {
            background: #FF6A3D;
            color: #ffffff;
            border-color: #FF6A3D;
        }
        .btn-primary:hover {
            background: #E55A2F;
            border-color: #E55A2F;
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }
        .btn-primary:active {
            background: #CC4F28;
            border-color: #CC4F28;
        }
        .btn-outline {
            background: transparent;
            color: #FF6A3D;
            border-color: #FF6A3D;
        }
        .btn-outline:hover {
            background: #FF6A3D;
            color: #ffffff;
            border-color: #FF6A3D;
        }
        .btn-outline-light {
            background: transparent;
            color: #ffffff;
            border-color: #ffffff;
        }
        .btn-outline-light:hover {
            background: #ffffff;
            color: #FF6A3D;
            border-color: #ffffff;
        }
        .btn-lg {
            padding: 0.9rem 2rem;
            font-size: 1.1rem;
            border-radius: 10px;
        }
        .btn-sm {
            padding: 0.5rem 1rem;
            font-size: 0.875rem;
            border-radius: 6px;
        }

        /* 标签 */
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.03em;
            line-height: 1.4;
        }
        .badge-accent {
            background: #FFC107;
            color: #2B2D42;
        }
        .badge-primary {
            background: #FF6A3D;
            color: #ffffff;
        }
        .badge-outline {
            background: transparent;
            border: 1px solid #FF6A3D;
            color: #FF6A3D;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid #E5E7EB;
            background: #FFFFFF;
            border-radius: 8px;
            margin-bottom: 0.5rem;
            overflow: hidden;
        }
        .faq-item summary {
            padding: 1.1rem 1.5rem;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            user-select: none;
            transition: background 0.2s ease;
            color: #2B2D42;
            font-size: 1rem;
        }
        .faq-item summary::-webkit-details-marker {
            display: none;
        }
        .faq-item summary:hover {
            background: #F8F9FA;
        }
        .faq-item summary .faq-icon {
            transition: transform 0.3s ease;
            font-size: 1.2rem;
            color: #FF6A3D;
            flex-shrink: 0;
            margin-left: 0.75rem;
        }
        .faq-item[open] summary .faq-icon {
            transform: rotate(45deg);
        }
        .faq-item .faq-answer {
            padding: 0 1.5rem 1.2rem 1.5rem;
            color: #4B5563;
            line-height: 1.7;
            font-size: 0.95rem;
        }

        /* 价格卡片 */
        .price-card {
            background: #FFFFFF;
            border-radius: 16px;
            padding: 2rem 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            position: relative;
            border: 2px solid transparent;
            display: flex;
            flex-direction: column;
        }
        .price-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
        }
        .price-card.featured {
            border-color: #FF6A3D;
            background: #FFF8F5;
            box-shadow: 0 4px 20px rgba(255, 106, 61, 0.15);
        }
        .price-card.featured::before {
            content: '推荐';
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: #FF6A3D;
            color: #fff;
            padding: 0.3rem 1.2rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 700;
            letter-spacing: 0.04em;
            white-space: nowrap;
        }

        /* 滚动条 */
        ::-webkit-scrollbar {
            width: 6px;
        }
        ::-webkit-scrollbar-track {
            background: #F3F4F6;
        }
        ::-webkit-scrollbar-thumb {
            background: #D1D5DB;
            border-radius: 3px;
        }
        ::-webkit-scrollbar-thumb:hover {
            background: #9CA3AF;
        }

        /* 响应式 */
        @media (max-width: 767px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .nav-desktop-links {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: flex !important;
            }
            .hero-bento-grid {
                grid-template-columns: 1fr;
                gap: 1rem;
            }
            .price-card.featured {
                transform: none;
            }
            .btn {
                padding: 0.65rem 1.2rem;
                font-size: 0.9rem;
            }
            .btn-lg {
                padding: 0.75rem 1.5rem;
                font-size: 1rem;
            }
        }
        @media (min-width: 768px) {
            .nav-desktop-links {
                display: flex !important;
            }
            .nav-mobile-toggle {
                display: none !important;
            }
        }
        @media (max-width: 639px) {
            .card-grid-3 {
                grid-template-columns: 1fr !important;
            }
            .card-grid-2 {
                grid-template-columns: 1fr !important;
            }
            .card-grid-4 {
                grid-template-columns: 1fr !important;
            }
        }

/* roulang page: category1 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-transparent .nav-logo {
            color: #ffffff;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.7rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            background-color: #FF6A3D;
            color: #ffffff;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

        .btn-primary:hover {
            background-color: #E55A2F;
            text-decoration: none;
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }

        .btn-outline {
            display: inline-block;
            padding: 0.7rem 1.6rem;
            border-radius: 8px;
            font-weight: 600;
            background-color: transparent;
            color: #FF6A3D;
            border: 2px solid #FF6A3D;
            cursor: pointer;
            transition: all 0.2s ease;
            font-size: 0.95rem;
        }

        .btn-outline:hover {
            background-color: #FF6A3D;
            color: #ffffff;
            text-decoration: none;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.85rem;
            color: #6B7280;
            flex-wrap: wrap;
            padding: 0.5rem 0;
        }

        .breadcrumb a {
            color: #6B7280;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #FF6A3D;
            text-decoration: underline;
        }

        .breadcrumb .separator {
            color: #9CA3AF;
        }

        .breadcrumb .current {
            color: #FF6A3D;
            font-weight: 600;
        }

        /* 文章列表项 */
        .article-list-item {
            display: flex;
            gap: 1.5rem;
            padding: 1.5rem 0;
            border-bottom: 1px solid #E5E7EB;
            transition: background-color 0.2s ease;
        }

        .article-list-item:hover {
            background-color: #FAFAFB;
        }

        .article-date-block {
            flex-shrink: 0;
            width: 90px;
            text-align: center;
            background: #F8F9FA;
            border-radius: 8px;
            padding: 0.75rem 0.5rem;
            align-self: flex-start;
        }

        .article-date-day {
            font-size: 1.6rem;
            font-weight: 700;
            color: #FF6A3D;
            line-height: 1;
        }

        .article-date-month {
            font-size: 0.8rem;
            color: #6B7280;
            margin-top: 0.2rem;
        }

        .article-date-year {
            font-size: 0.7rem;
            color: #9CA3AF;
            margin-top: 0.1rem;
        }

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

        .article-title {
            font-size: 1.15rem;
            font-weight: 700;
            color: #2B2D42;
            margin: 0 0 0.4rem 0;
            line-height: 1.4;
        }

        .article-title a {
            color: #2B2D42;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .article-title a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .article-summary {
            font-size: 0.9rem;
            color: #6B7280;
            line-height: 1.7;
            margin: 0 0 0.6rem 0;
        }

        .article-tags {
            display: flex;
            gap: 0.5rem;
            flex-wrap: wrap;
            margin-bottom: 0.5rem;
        }

        .article-tag {
            display: inline-block;
            font-size: 0.75rem;
            padding: 0.2rem 0.6rem;
            border-radius: 20px;
            background-color: #FFF3ED;
            color: #FF6A3D;
            font-weight: 500;
        }

        .read-more-link {
            font-size: 0.85rem;
            font-weight: 600;
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease;
            display: inline-flex;
            align-items: center;
            gap: 0.3rem;
        }

        .read-more-link:hover {
            color: #E55A2F;
            text-decoration: none;
        }

        .read-more-link .arrow {
            transition: transform 0.2s ease;
        }

        .read-more-link:hover .arrow {
            transform: translateX(4px);
        }

        /* 分类Banner */
        .category-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            min-height: 320px;
            display: flex;
            align-items: center;
            overflow: hidden;
        }

        .category-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(43, 45, 66, 0.88) 0%, rgba(43, 45, 66, 0.7) 100%);
            z-index: 1;
        }

        .category-banner-content {
            position: relative;
            z-index: 2;
            max-width: 700px;
        }

        /* 筛选标签栏 */
        .filter-bar {
            display: flex;
            gap: 0.6rem;
            flex-wrap: wrap;
            padding: 1rem 0;
            border-bottom: 2px solid #E5E7EB;
            margin-bottom: 1.5rem;
        }

        .filter-tag {
            padding: 0.45rem 1rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 500;
            cursor: pointer;
            transition: all 0.2s ease;
            border: 1px solid #E5E7EB;
            background: #FFFFFF;
            color: #6B7280;
            white-space: nowrap;
        }

        .filter-tag:hover {
            border-color: #FF6A3D;
            color: #FF6A3D;
            background: #FFF8F5;
        }

        .filter-tag.active-filter {
            background: #FF6A3D;
            color: #ffffff;
            border-color: #FF6A3D;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-desktop-links {
                gap: 0.8rem;
            }
            .nav-link {
                font-size: 0.85rem;
            }
            .article-list-item {
                flex-direction: column;
                gap: 0.8rem;
            }
            .article-date-block {
                width: auto;
                display: flex;
                align-items: center;
                gap: 0.5rem;
                padding: 0.5rem 0.8rem;
                border-radius: 6px;
            }
            .article-date-day {
                font-size: 1.2rem;
            }
            .category-banner {
                min-height: 240px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop-links {
                display: none;
            }
            .nav-mobile-toggle {
                display: block !important;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .category-banner {
                min-height: 200px;
            }
            .category-banner h1 {
                font-size: 1.6rem;
            }
            .filter-bar {
                gap: 0.4rem;
            }
            .filter-tag {
                font-size: 0.78rem;
                padding: 0.35rem 0.75rem;
            }
            .article-title {
                font-size: 1.05rem;
            }
            .article-summary {
                font-size: 0.85rem;
            }
        }

        @media (max-width: 520px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .category-banner {
                min-height: 170px;
            }
            .category-banner h1 {
                font-size: 1.35rem;
            }
            .article-list-item {
                padding: 1rem 0;
            }
            .article-date-block {
                flex-direction: row;
                width: auto;
                padding: 0.4rem 0.7rem;
            }
            .article-date-day {
                font-size: 1.1rem;
            }
        }

/* roulang page: category3 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-transparent .nav-logo {
            color: #ffffff;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background: #FF6A3D;
            color: #FFFFFF;
            border-radius: 8px;
            font-weight: 600;
            border: none;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 0.95rem;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #FFFFFF;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }

        .btn-outline {
            display: inline-block;
            padding: 0.7rem 1.5rem;
            border: 2px solid #FF6A3D;
            color: #FF6A3D;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 0.95rem;
            background: transparent;
            text-decoration: none;
        }

        .btn-outline:hover {
            background: #FF6A3D;
            color: #FFFFFF;
            text-decoration: none;
            transform: translateY(-1px);
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: #9CA3AF;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .breadcrumb .separator {
            color: #D1D5DB;
            font-size: 0.75rem;
        }

        .breadcrumb .current {
            color: #FF6A3D;
            font-weight: 600;
        }

        /* 图文交错区块 */
        .story-block {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 2.5rem;
            align-items: center;
            padding: 2.5rem 0;
            border-bottom: 1px solid #E5E7EB;
        }

        .story-block:last-child {
            border-bottom: none;
        }

        .story-block.reverse .story-image {
            order: 2;
        }

        .story-block.reverse .story-content {
            order: 1;
        }

        .story-image {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
            aspect-ratio: 16 / 10;
            background: #E5E7EB;
        }

        .story-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            display: block;
        }

        .story-content {
            display: flex;
            flex-direction: column;
            justify-content: center;
        }

        .story-tag {
            display: inline-block;
            background: #FFF3E0;
            color: #FF6A3D;
            padding: 0.3rem 0.8rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            margin-bottom: 0.75rem;
            width: fit-content;
        }

        .story-content h3 {
            font-size: 1.4rem;
            font-weight: 700;
            color: #2B2D42;
            margin: 0 0 0.75rem 0;
            line-height: 1.4;
        }

        .story-content p {
            font-size: 0.95rem;
            color: #4B5563;
            line-height: 1.75;
            margin: 0 0 1rem 0;
        }

        .story-meta {
            font-size: 0.8rem;
            color: #9CA3AF;
            display: flex;
            align-items: center;
            gap: 0.75rem;
        }

        .story-meta span {
            display: flex;
            align-items: center;
            gap: 0.3rem;
        }

        /* CTA区块 */
        .cta-section {
            background: linear-gradient(135deg, #FF6A3D 0%, #FF8C6B 100%);
            border-radius: 16px;
            padding: 3rem 2.5rem;
            text-align: center;
            color: #FFFFFF;
            margin: 2rem 0;
        }

        .cta-section h2 {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0 0 0.75rem 0;
            color: #FFFFFF;
        }

        .cta-section p {
            font-size: 1rem;
            margin: 0 0 1.5rem 0;
            opacity: 0.92;
            line-height: 1.7;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .cta-section .btn-white {
            display: inline-block;
            padding: 0.8rem 2rem;
            background: #FFFFFF;
            color: #FF6A3D;
            border-radius: 8px;
            font-weight: 700;
            text-decoration: none;
            transition: all 0.2s ease;
            font-size: 1rem;
        }

        .cta-section .btn-white:hover {
            background: #FFF5F0;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.18);
            text-decoration: none;
        }

        /* 统计条 */
        .stats-strip {
            display: flex;
            flex-wrap: wrap;
            gap: 2rem;
            justify-content: center;
            padding: 2rem 0;
            text-align: center;
        }

        .stat-item {
            flex: 1 1 120px;
            min-width: 100px;
        }

        .stat-number {
            font-size: 2rem;
            font-weight: 700;
            color: #FF6A3D;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.85rem;
            color: #6B7280;
            margin-top: 0.3rem;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .story-block {
                grid-template-columns: 1fr;
                gap: 1.25rem;
                padding: 1.5rem 0;
            }

            .story-block.reverse .story-image {
                order: 1;
            }

            .story-block.reverse .story-content {
                order: 2;
            }

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

            .story-content h3 {
                font-size: 1.2rem;
            }

            .cta-section {
                padding: 2rem 1.25rem;
            }

            .cta-section h2 {
                font-size: 1.4rem;
            }

            .nav-desktop-links {
                display: none !important;
            }

            .nav-mobile-toggle {
                display: block !important;
            }

            .stats-strip {
                gap: 1rem;
            }

            .stat-number {
                font-size: 1.5rem;
            }

            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile-toggle {
                display: none !important;
            }

            .nav-desktop-links {
                display: flex !important;
            }
        }

        @media (max-width: 1024px) and (min-width: 769px) {
            .story-block {
                gap: 1.5rem;
            }

            .story-content h3 {
                font-size: 1.25rem;
            }
        }

/* roulang page: category2 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-transparent .nav-logo {
            color: #ffffff;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .card-featured {
            background: #FFFFFF;
            border-radius: 16px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
            transition: transform 0.25s ease, box-shadow 0.25s ease;
            overflow: hidden;
            border: 1px solid rgba(255, 106, 61, 0.15);
        }

        .card-featured:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 32px rgba(0, 0, 0, 0.16);
        }

        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background: #FF6A3D;
            color: #ffffff;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.2s ease;
            border: none;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #ffffff;
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }

        .btn-outline {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            border: 2px solid #FF6A3D;
            color: #FF6A3D;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.2s ease;
            cursor: pointer;
            text-decoration: none;
            background: transparent;
        }

        .btn-outline:hover {
            background: #FF6A3D;
            color: #ffffff;
            text-decoration: none;
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.3);
        }

        .tag-pill {
            display: inline-block;
            padding: 0.3rem 0.85rem;
            background: #FFF3ED;
            color: #FF6A3D;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            transition: all 0.2s ease;
            cursor: pointer;
            border: 1px solid transparent;
            white-space: nowrap;
        }

        .tag-pill:hover {
            background: #FF6A3D;
            color: #ffffff;
            border-color: #FF6A3D;
            text-decoration: none;
        }

        .tag-pill.active-tag {
            background: #FF6A3D;
            color: #ffffff;
            border-color: #FF6A3D;
        }

        .breadcrumb-link {
            color: rgba(255, 255, 255, 0.85);
            text-decoration: none;
            font-size: 0.9rem;
            transition: color 0.2s ease;
        }

        .breadcrumb-link:hover {
            color: #FFC107;
            text-decoration: none;
        }

        .breadcrumb-separator {
            color: rgba(255, 255, 255, 0.6);
            margin: 0 0.5rem;
        }

        .breadcrumb-current {
            color: #FFC107;
            font-weight: 600;
            font-size: 0.9rem;
        }

        .section-title {
            font-size: 2rem;
            font-weight: 700;
            color: #2B2D42;
            margin-bottom: 0.5rem;
            line-height: 1.3;
        }

        .section-subtitle {
            font-size: 1.05rem;
            color: #6B7280;
            margin-bottom: 2rem;
            line-height: 1.6;
        }

        @media (max-width: 768px) {
            .section-title {
                font-size: 1.55rem;
            }
            .section-subtitle {
                font-size: 0.95rem;
            }
            .nav-desktop-links {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: block !important;
            }
        }

        @media (min-width: 769px) {
            .nav-mobile-toggle {
                display: none !important;
            }
            .nav-desktop-links {
                display: flex !important;
            }
        }

        @media (max-width: 640px) {
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
        }

/* roulang page: category4 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-top: 70px;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
            color: #2B2D42;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        .nav-transparent .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        /* 时间线 */
        .timeline {
            position: relative;
            padding-left: 2.5rem;
        }

        .timeline::before {
            content: '';
            position: absolute;
            left: 1rem;
            top: 0;
            bottom: 0;
            width: 3px;
            background: linear-gradient(180deg, #FF6A3D 0%, #FFC107 50%, #FF6A3D 100%);
            border-radius: 3px;
        }

        .timeline-node {
            position: relative;
            margin-bottom: 2.5rem;
            padding-left: 1.5rem;
        }

        .timeline-node:last-child {
            margin-bottom: 0;
        }

        .timeline-dot {
            position: absolute;
            left: -2rem;
            top: 0.5rem;
            width: 20px;
            height: 20px;
            border-radius: 50%;
            background: #FF6A3D;
            border: 4px solid #FFFFFF;
            box-shadow: 0 0 0 3px #FF6A3D, 0 2px 8px rgba(255, 106, 61, 0.35);
            z-index: 2;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }

        .timeline-node:hover .timeline-dot {
            transform: scale(1.3);
            box-shadow: 0 0 0 3px #FF6A3D, 0 4px 16px rgba(255, 106, 61, 0.55);
        }

        .timeline-tag {
            display: inline-block;
            background: #FFF3E0;
            color: #FF6A3D;
            font-size: 0.8rem;
            font-weight: 600;
            padding: 0.2rem 0.75rem;
            border-radius: 20px;
            margin-bottom: 0.5rem;
            letter-spacing: 0.03em;
        }

        .timeline-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.5rem 1.75rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            border-left: 4px solid #FF6A3D;
            transition: box-shadow 0.3s ease, transform 0.3s ease;
        }

        .timeline-card:hover {
            box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
            transform: translateX(4px);
        }

        .timeline-card h3 {
            margin: 0 0 0.5rem 0;
            font-size: 1.2rem;
            font-weight: 700;
            color: #2B2D42;
        }

        .timeline-card p {
            margin: 0;
            color: #4B5563;
            line-height: 1.75;
            font-size: 0.95rem;
        }

        .timeline-card .timeline-img {
            border-radius: 8px;
            margin-top: 1rem;
            width: 100%;
            max-height: 240px;
            object-fit: cover;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: #6B7280;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #FF6A3D;
            font-weight: 500;
        }

        .breadcrumb a:hover {
            color: #E55A2F;
            text-decoration: underline;
        }

        .breadcrumb .separator {
            color: #9CA3AF;
            user-select: none;
        }

        .breadcrumb .current {
            color: #2B2D42;
            font-weight: 600;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            background: #FF6A3D;
            color: #FFFFFF;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            border: none;
            transition: all 0.2s ease;
            text-align: center;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #FFFFFF;
            box-shadow: 0 4px 16px rgba(255, 106, 61, 0.4);
            transform: translateY(-2px);
        }

        .btn-outline {
            display: inline-block;
            padding: 0.7rem 1.7rem;
            border: 2px solid #FF6A3D;
            color: #FF6A3D;
            background: transparent;
            border-radius: 8px;
            font-weight: 600;
            font-size: 1rem;
            transition: all 0.2s ease;
            text-align: center;
            cursor: pointer;
            text-decoration: none;
        }

        .btn-outline:hover {
            background: #FF6A3D;
            color: #FFFFFF;
            text-decoration: none;
            box-shadow: 0 4px 16px rgba(255, 106, 61, 0.35);
            transform: translateY(-2px);
        }

        /* 统计卡片 */
        .stat-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.5rem;
            text-align: center;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
        }

        .stat-card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .stat-number {
            font-size: 2.2rem;
            font-weight: 800;
            color: #FF6A3D;
            line-height: 1.2;
        }

        .stat-label {
            font-size: 0.9rem;
            color: #6B7280;
            margin-top: 0.3rem;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-desktop-links {
                gap: 0.8rem;
            }
            .nav-link {
                font-size: 0.82rem;
            }
            .nav-logo {
                font-size: 1.15rem;
            }
            .timeline {
                padding-left: 2rem;
            }
            .timeline::before {
                left: 0.75rem;
            }
            .timeline-dot {
                left: -1.75rem;
                width: 16px;
                height: 16px;
                border-width: 3px;
            }
            .timeline-node {
                padding-left: 1rem;
                margin-bottom: 2rem;
            }
            .timeline-card {
                padding: 1.2rem 1.3rem;
            }
        }

        @media (max-width: 768px) {
            body {
                padding-top: 60px;
            }
            .nav-desktop-links {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: block !important;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .timeline {
                padding-left: 1.75rem;
            }
            .timeline::before {
                left: 0.5rem;
                width: 2px;
            }
            .timeline-dot {
                left: -1.5rem;
                width: 14px;
                height: 14px;
                border-width: 2px;
                top: 0.35rem;
            }
            .timeline-node {
                padding-left: 0.5rem;
                margin-bottom: 1.75rem;
            }
            .timeline-card {
                padding: 1rem 1.1rem;
                border-left-width: 3px;
            }
            .timeline-card h3 {
                font-size: 1.05rem;
            }
            .timeline-card p {
                font-size: 0.9rem;
            }
            .stat-number {
                font-size: 1.6rem;
            }
            .stat-card {
                padding: 1rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.6rem 1.3rem;
                font-size: 0.9rem;
            }
        }

        @media (max-width: 520px) {
            .timeline {
                padding-left: 1.4rem;
            }
            .timeline::before {
                left: 0.35rem;
            }
            .timeline-dot {
                left: -1.3rem;
                width: 12px;
                height: 12px;
                border-width: 2px;
            }
            .timeline-node {
                padding-left: 0.3rem;
                margin-bottom: 1.5rem;
            }
            .timeline-card {
                padding: 0.85rem 0.9rem;
                border-radius: 8px;
            }
            .timeline-card h3 {
                font-size: 0.95rem;
            }
            .timeline-card p {
                font-size: 0.85rem;
                line-height: 1.6;
            }
            .breadcrumb {
                font-size: 0.78rem;
            }
        }

/* roulang page: category5 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
            padding-top: 72px;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        #site-header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        #site-header .nav-link {
            color: #2B2D42;
            font-weight: 500;
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        #site-header .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        #site-header .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        #site-header .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
            color: #2B2D42;
            text-decoration: none;
        }

        .nav-desktop-links {
            display: flex;
            align-items: center;
            gap: 1.5rem;
            flex-wrap: wrap;
            justify-content: flex-end;
        }

        .nav-mobile-toggle {
            display: none;
            background: none;
            border: none;
            color: #2B2D42;
            font-size: 1.6rem;
            padding: 0.3rem;
            line-height: 1;
            cursor: pointer;
            z-index: 51;
        }

        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
            text-decoration: none;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        @media (max-width: 1024px) {
            .nav-desktop-links {
                display: none;
            }
            .nav-mobile-toggle {
                display: block;
            }
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.875rem;
            color: #6B7280;
            flex-wrap: wrap;
            padding: 0.75rem 0;
        }
        .breadcrumb a {
            color: #6B7280;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        .breadcrumb a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }
        .breadcrumb .separator {
            color: #9CA3AF;
            user-select: none;
        }
        .breadcrumb .current {
            color: #FF6A3D;
            font-weight: 600;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }
        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background: #FF6A3D;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            border: none;
            transition: all 0.2s ease;
            text-decoration: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 16px rgba(255, 106, 61, 0.35);
        }
        .btn-outline {
            display: inline-block;
            padding: 0.75rem 1.5rem;
            background: transparent;
            color: #FF6A3D;
            border: 2px solid #FF6A3D;
            border-radius: 8px;
            font-weight: 600;
            transition: all 0.2s ease;
            text-decoration: none;
            cursor: pointer;
            text-align: center;
        }
        .btn-outline:hover {
            background: #FF6A3D;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        /* 标签 */
        .badge {
            display: inline-block;
            padding: 0.25rem 0.75rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 600;
            letter-spacing: 0.02em;
        }
        .badge-accent {
            background: #FFF3E0;
            color: #E55A2F;
        }
        .badge-gold {
            background: #FFF8E1;
            color: #E5A800;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid #E5E7EB;
            overflow: hidden;
        }
        .faq-question {
            width: 100%;
            text-align: left;
            padding: 1.25rem 0;
            background: none;
            border: none;
            font-size: 1.05rem;
            font-weight: 600;
            color: #2B2D42;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 1rem;
            transition: color 0.2s ease;
        }
        .faq-question:hover {
            color: #FF6A3D;
        }
        .faq-question .icon {
            flex-shrink: 0;
            width: 24px;
            height: 24px;
            transition: transform 0.3s ease;
            color: #6B7280;
        }
        .faq-item.open .faq-question .icon {
            transform: rotate(45deg);
            color: #FF6A3D;
        }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.35s ease, padding 0.35s ease;
            padding: 0;
            color: #4B5563;
            line-height: 1.8;
            font-size: 0.95rem;
        }
        .faq-item.open .faq-answer {
            max-height: 500px;
            padding: 0 0 1.25rem 0;
        }

        /* 板块间距 */
        .section {
            padding: 3.5rem 0;
        }
        @media (max-width: 768px) {
            .section {
                padding: 2.5rem 0;
            }
            body {
                padding-top: 60px;
            }
        }

        /* 页脚 */
        footer a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.2s ease;
        }
        footer a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        /* 等级卡片高亮 */
        .tier-card.featured {
            border: 2px solid #FF6A3D;
            position: relative;
            transform: scale(1.03);
            box-shadow: 0 12px 32px rgba(255, 106, 61, 0.18);
            z-index: 2;
        }
        .tier-card.featured .featured-badge {
            position: absolute;
            top: -14px;
            left: 50%;
            transform: translateX(-50%);
            background: #FF6A3D;
            color: #fff;
            padding: 0.3rem 1.2rem;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            white-space: nowrap;
            z-index: 3;
        }
        @media (max-width: 768px) {
            .tier-card.featured {
                transform: scale(1.01);
            }
        }

        /* 资源卡片 */
        .resource-card {
            display: flex;
            align-items: center;
            gap: 1rem;
            background: #fff;
            border-radius: 12px;
            padding: 1.25rem 1.5rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.2s ease;
            border: 1px solid #F3F4F6;
        }
        .resource-card:hover {
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.10);
            border-color: #FF6A3D;
            transform: translateY(-2px);
        }
        .resource-icon {
            width: 48px;
            height: 48px;
            border-radius: 10px;
            background: #FFF3E0;
            display: flex;
            align-items: center;
            justify-content: center;
            flex-shrink: 0;
            font-size: 1.4rem;
        }

/* roulang page: category6 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-transparent .nav-logo {
            color: #ffffff;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            background: #FF6A3D;
            color: #ffffff;
            border: none;
            cursor: pointer;
            text-align: center;
        }

        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #ffffff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }

        .btn-primary:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        .btn-outline {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            border-radius: 8px;
            font-weight: 600;
            font-size: 0.95rem;
            transition: all 0.2s ease;
            background: transparent;
            color: #FF6A3D;
            border: 2px solid #FF6A3D;
            cursor: pointer;
            text-align: center;
        }

        .btn-outline:hover {
            background: #FF6A3D;
            color: #ffffff;
            text-decoration: none;
            transform: translateY(-1px);
        }

        /* FAQ手风琴 */
        .faq-item {
            background: #FFFFFF;
            border-radius: 12px;
            margin-bottom: 0.75rem;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }

        .faq-item:hover {
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.10);
        }

        .faq-question {
            width: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 1.25rem 1.5rem;
            background: none;
            border: none;
            cursor: pointer;
            font-size: 1.05rem;
            font-weight: 600;
            color: #2B2D42;
            text-align: left;
            line-height: 1.5;
            transition: color 0.2s ease;
            gap: 1rem;
        }

        .faq-question:hover {
            color: #FF6A3D;
        }

        .faq-question:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: -2px;
            border-radius: 12px;
        }

        .faq-icon {
            flex-shrink: 0;
            width: 28px;
            height: 28px;
            border-radius: 50%;
            background: #F3F4F6;
            display: flex;
            align-items: center;
            justify-content: center;
            transition: all 0.3s ease;
            font-size: 1.2rem;
            color: #6B7280;
            font-weight: 700;
            line-height: 1;
        }

        .faq-item.open .faq-icon {
            background: #FF6A3D;
            color: #ffffff;
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
        }

        .faq-item.open .faq-answer {
            max-height: 500px;
        }

        .faq-answer-inner {
            padding: 0 1.5rem 1.25rem 1.5rem;
            color: #4B5563;
            line-height: 1.8;
            font-size: 0.95rem;
            border-top: 1px solid #F3F4F6;
            margin-top: 0;
        }

        .faq-item.open .faq-answer-inner {
            padding-top: 1rem;
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: #9CA3AF;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #9CA3AF;
            text-decoration: none;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .breadcrumb .separator {
            color: #D1D5DB;
        }

        .breadcrumb .current {
            color: #FF6A3D;
            font-weight: 600;
        }

        /* 页面Banner */
        .page-banner {
            position: relative;
            background-size: cover;
            background-position: center;
            background-repeat: no-repeat;
            min-height: 320px;
            display: flex;
            align-items: center;
            margin-top: 64px;
        }

        .page-banner::before {
            content: '';
            position: absolute;
            inset: 0;
            background: linear-gradient(135deg, rgba(43, 45, 66, 0.85) 0%, rgba(43, 45, 66, 0.65) 100%);
            z-index: 1;
        }

        .page-banner-content {
            position: relative;
            z-index: 2;
            color: #ffffff;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-desktop-links {
                gap: 0.9rem;
            }
            .nav-link {
                font-size: 0.85rem;
            }
            .nav-logo {
                font-size: 1.2rem;
            }
            .page-banner {
                min-height: 260px;
                margin-top: 56px;
            }
        }

        @media (max-width: 768px) {
            .nav-desktop-links {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: block !important;
            }
            .container {
                padding-left: 1rem;
                padding-right: 1rem;
            }
            .page-banner {
                min-height: 220px;
                margin-top: 52px;
            }
            .faq-question {
                font-size: 0.95rem;
                padding: 1rem 1.25rem;
            }
            .faq-answer-inner {
                padding: 0 1.25rem 1rem 1.25rem;
                font-size: 0.9rem;
            }
            .faq-icon {
                width: 24px;
                height: 24px;
                font-size: 1rem;
            }
        }

        @media (max-width: 520px) {
            .page-banner {
                min-height: 180px;
                margin-top: 48px;
            }
            .faq-question {
                font-size: 0.9rem;
                padding: 0.85rem 1rem;
            }
            .faq-answer-inner {
                padding: 0 1rem 0.85rem 1rem;
                font-size: 0.85rem;
            }
            .btn-primary,
            .btn-outline {
                padding: 0.6rem 1.25rem;
                font-size: 0.85rem;
            }
        }

/* roulang page: category7 */
:root {
            --primary: #FF6A3D;
            --primary-dark: #E55A2F;
            --primary-light: #FF8C6B;
            --secondary: #2B2D42;
            --secondary-light: #3D4060;
            --accent: #FFC107;
            --accent-dark: #E5A800;
            --bg: #F8F9FA;
            --surface: #FFFFFF;
            --muted: #6B7280;
            --muted-light: #9CA3AF;
            --border: #E5E7EB;
            --border-light: #F3F4F6;
            --radius-card: 12px;
            --radius-btn: 8px;
            --radius-container: 16px;
            --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-card-hover: 0 8px 24px rgba(0, 0, 0, 0.12);
            --shadow-nav: 0 1px 4px rgba(0, 0, 0, 0.08);
            --transition-fast: 0.2s ease;
            --transition-smooth: 0.3s ease;
        }

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

        body {
            font-family: 'PingFang SC', 'Microsoft YaHei', 'Helvetica Neue', sans-serif;
            font-size: 1rem;
            line-height: 1.7;
            color: #2B2D42;
            background-color: #F8F9FA;
            margin: 0;
            padding: 0;
            overflow-x: hidden;
        }

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

        a {
            color: #FF6A3D;
            text-decoration: none;
            transition: color 0.2s ease, text-decoration 0.2s ease;
        }

        a:hover {
            text-decoration: underline;
            color: #E55A2F;
        }

        a:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 4px;
        }

        button {
            cursor: pointer;
            font-family: inherit;
        }

        button:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 2px;
            border-radius: 8px;
        }

        input:focus-visible {
            outline: 2px solid #FF6A3D;
            outline-offset: 0;
        }

        .container {
            width: 100%;
            max-width: 1200px;
            margin-left: auto;
            margin-right: auto;
            padding-left: 1.5rem;
            padding-right: 1.5rem;
        }

        /* 导航 */
        .nav-transparent {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 50;
            background: rgba(255, 255, 255, 0.15);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.25);
            box-shadow: 0 1px 4px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .nav-solid {
            background: rgba(255, 255, 255, 0.96);
            backdrop-filter: blur(16px);
            -webkit-backdrop-filter: blur(16px);
            border-bottom: 1px solid #E5E7EB;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.10);
        }

        .nav-transparent .nav-link {
            color: #ffffff;
            font-weight: 500;
        }

        .nav-solid .nav-link {
            color: #2B2D42;
            font-weight: 500;
        }

        .nav-link {
            transition: color 0.2s ease;
            font-size: 0.95rem;
            white-space: nowrap;
        }

        .nav-link:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .nav-link.active {
            color: #FF6A3D;
            font-weight: 700;
        }

        .nav-logo {
            font-size: 1.35rem;
            font-weight: 700;
            letter-spacing: 0.02em;
            white-space: nowrap;
        }

        .nav-transparent .nav-logo {
            color: #ffffff;
        }

        .nav-solid .nav-logo {
            color: #2B2D42;
        }

        /* 移动端菜单 */
        .mobile-menu {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            z-index: 49;
            background: rgba(43, 45, 66, 0.97);
            backdrop-filter: blur(12px);
            -webkit-backdrop-filter: blur(12px);
            flex-direction: column;
            align-items: center;
            justify-content: center;
            gap: 1.5rem;
            padding: 2rem;
        }

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

        .mobile-menu a {
            color: #ffffff;
            font-size: 1.2rem;
            font-weight: 500;
            transition: color 0.2s ease;
        }

        .mobile-menu a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .mobile-menu a.active {
            color: #FFC107;
            font-weight: 700;
        }

        /* 卡片 */
        .card {
            background: #FFFFFF;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            transition: transform 0.2s ease, box-shadow 0.2s ease;
            overflow: hidden;
        }

        .card:hover {
            transform: translateY(-4px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .card-interactive {
            cursor: pointer;
        }

        /* 按钮 */
        .btn-primary {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            background: #FF6A3D;
            color: #fff;
            border-radius: 8px;
            font-weight: 600;
            border: none;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 1rem;
            white-space: nowrap;
        }

        .btn-primary:hover {
            background: #E55A2F;
            text-decoration: none;
            color: #fff;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.35);
        }

        .btn-outline {
            display: inline-block;
            padding: 0.7rem 1.7rem;
            background: transparent;
            color: #FF6A3D;
            border-radius: 8px;
            font-weight: 600;
            border: 2px solid #FF6A3D;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 1rem;
            white-space: nowrap;
        }

        .btn-outline:hover {
            background: #FF6A3D;
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 106, 61, 0.3);
        }

        .btn-accent {
            display: inline-block;
            padding: 0.75rem 1.75rem;
            background: #FFC107;
            color: #2B2D42;
            border-radius: 8px;
            font-weight: 700;
            border: none;
            transition: all 0.2s ease;
            text-align: center;
            font-size: 1rem;
            white-space: nowrap;
        }

        .btn-accent:hover {
            background: #E5A800;
            text-decoration: none;
            color: #2B2D42;
            transform: translateY(-1px);
            box-shadow: 0 4px 14px rgba(255, 193, 7, 0.4);
        }

        /* 面包屑 */
        .breadcrumb {
            display: flex;
            align-items: center;
            gap: 0.5rem;
            font-size: 0.9rem;
            color: #6B7280;
            padding: 0.5rem 0;
            flex-wrap: wrap;
        }

        .breadcrumb a {
            color: #6B7280;
            transition: color 0.2s ease;
        }

        .breadcrumb a:hover {
            color: #FF6A3D;
            text-decoration: none;
        }

        .breadcrumb .current {
            color: #FF6A3D;
            font-weight: 600;
        }

        .breadcrumb .sep {
            color: #9CA3AF;
        }

        /* 进度环 */
        .progress-ring {
            position: relative;
            width: 160px;
            height: 160px;
            flex-shrink: 0;
        }

        .progress-ring svg {
            transform: rotate(-90deg);
        }

        .progress-ring .bg-circle {
            fill: none;
            stroke: rgba(255, 255, 255, 0.25);
            stroke-width: 10;
        }

        .progress-ring .fg-circle {
            fill: none;
            stroke: #FFC107;
            stroke-width: 10;
            stroke-linecap: round;
            transition: stroke-dashoffset 1.2s ease;
        }

        .progress-ring .ring-text {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            color: #fff;
        }

        .progress-ring .ring-text .big-num {
            font-size: 2rem;
            font-weight: 700;
            line-height: 1;
        }

        .progress-ring .ring-text .sub-label {
            font-size: 0.75rem;
            opacity: 0.85;
            white-space: nowrap;
        }

        /* FAQ */
        .faq-item {
            border-bottom: 1px solid #E5E7EB;
            background: #FFFFFF;
            border-radius: 8px;
            margin-bottom: 0.5rem;
            overflow: hidden;
            transition: box-shadow 0.2s ease;
        }

        .faq-item:hover {
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .faq-item summary {
            padding: 1.1rem 1.25rem;
            font-weight: 600;
            cursor: pointer;
            list-style: none;
            display: flex;
            align-items: center;
            justify-content: space-between;
            color: #2B2D42;
            font-size: 1rem;
            transition: color 0.2s ease;
        }

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

        .faq-item summary:hover {
            color: #FF6A3D;
        }

        .faq-item summary .faq-icon {
            width: 20px;
            height: 20px;
            flex-shrink: 0;
            transition: transform 0.3s ease;
            color: #FF6A3D;
        }

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

        .faq-item .faq-answer {
            padding: 0 1.25rem 1.1rem 1.25rem;
            color: #6B7280;
            line-height: 1.75;
            font-size: 0.95rem;
        }

        /* 档位卡片 */
        .tier-card {
            background: #FFFFFF;
            border-radius: 12px;
            padding: 1.5rem;
            text-align: center;
            border: 2px solid #E5E7EB;
            transition: all 0.3s ease;
            position: relative;
        }

        .tier-card.featured {
            border-color: #FF6A3D;
            box-shadow: 0 4px 20px rgba(255, 106, 61, 0.15);
            transform: scale(1.03);
        }

        .tier-card:hover {
            border-color: #FF6A3D;
            box-shadow: 0 6px 24px rgba(255, 106, 61, 0.18);
            transform: translateY(-3px);
        }

        .tier-card.featured:hover {
            transform: scale(1.03) translateY(-3px);
        }

        .tier-card .tier-badge {
            display: inline-block;
            padding: 0.25rem 0.85rem;
            background: #FFC107;
            color: #2B2D42;
            border-radius: 20px;
            font-size: 0.8rem;
            font-weight: 700;
            margin-bottom: 0.75rem;
        }

        .tier-card .tier-name {
            font-size: 1.2rem;
            font-weight: 700;
            color: #2B2D42;
            margin-bottom: 0.5rem;
        }

        .tier-card .tier-desc {
            font-size: 0.85rem;
            color: #6B7280;
            line-height: 1.5;
            margin-bottom: 1rem;
        }

        /* 步骤列表 */
        .step-list {
            list-style: none;
            padding: 0;
            margin: 0;
            counter-reset: step;
        }

        .step-list li {
            counter-increment: step;
            display: flex;
            align-items: flex-start;
            gap: 1rem;
            padding: 1.25rem 0;
            border-bottom: 1px solid #E5E7EB;
            position: relative;
        }

        .step-list li:last-child {
            border-bottom: none;
        }

        .step-list li .step-num {
            flex-shrink: 0;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: #FF6A3D;
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 1.1rem;
        }

        .step-list li .step-content h4 {
            margin: 0 0 0.3rem 0;
            font-size: 1.05rem;
            color: #2B2D42;
        }

        .step-list li .step-content p {
            margin: 0;
            font-size: 0.9rem;
            color: #6B7280;
            line-height: 1.6;
        }

        /* 响应式 */
        @media (max-width: 1024px) {
            .nav-desktop-links {
                gap: 0.9rem;
            }
            .nav-link {
                font-size: 0.82rem;
            }
            .progress-ring {
                width: 130px;
                height: 130px;
            }
            .progress-ring .ring-text .big-num {
                font-size: 1.5rem;
            }
            .tier-card.featured {
                transform: scale(1.01);
            }
            .tier-card.featured:hover {
                transform: scale(1.01) translateY(-3px);
            }
        }

        @media (max-width: 768px) {
            .nav-desktop-links {
                display: none !important;
            }
            .nav-mobile-toggle {
                display: block !important;
            }
            .nav-transparent .nav-mobile-toggle {
                color: #ffffff;
            }
            .nav-solid .nav-mobile-toggle {
                color: #2B2D42;
            }
            .hero-content-row {
                flex-direction: column;
                text-align: center;
                align-items: center;
            }
            .hero-text-block {
                text-align: center;
                align-items: center;
            }
            .hero-text-block h1 {
                font-size: 1.8rem;
            }
            .progress-ring {
                width: 120px;
                height: 120px;
            }
            .progress-ring .ring-text .big-num {
                font-size: 1.35rem;
            }
            .tier-card.featured {
                transform: scale(1);
            }
            .tier-card.featured:hover {
                transform: scale(1) translateY(-3px);
            }
            .step-list li {
                flex-direction: column;
                gap: 0.5rem;
            }
            footer .footer-grid {
                grid-template-columns: 1fr 1fr;
                gap: 1.5rem;
            }
        }

        @media (max-width: 520px) {
            .hero-text-block h1 {
                font-size: 1.5rem;
            }
            .hero-text-block p {
                font-size: 0.9rem;
            }
            .progress-ring {
                width: 100px;
                height: 100px;
            }
            .progress-ring .ring-text .big-num {
                font-size: 1.15rem;
            }
            .tier-grid {
                grid-template-columns: 1fr !important;
            }
            footer .footer-grid {
                grid-template-columns: 1fr;
                gap: 1.25rem;
            }
            .breadcrumb {
                font-size: 0.8rem;
            }
        }