/* roulang page: index */
/* ===== 设计变量 ===== */
        :root {
            --primary: #F26B3A;
            --primary-hover: #D95828;
            --secondary: #0E7C66;
            --secondary-hover: #0A5F4E;
            --bg: #FAF6F0;
            --card: #FFFFFF;
            --border: #E8DED3;
            --text-main: #2B3734;
            --text-muted: #6B7A76;
            --accent: #F2B544;
            --error: #D94B3D;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-sm: 8px;
            --shadow-card: 0 2px 10px rgba(43, 55, 52, 0.06);
            --shadow-hover: 0 10px 24px rgba(43, 55, 52, 0.12);
            --shadow-btn: 0 4px 14px rgba(242, 107, 58, 0.3);
            --shadow-nav: 0 2px 12px rgba(43, 55, 52, 0.06);
            --spacing-section: 72px;
            --spacing-mobile: 48px;
        }

        /* ===== Reset / Base ===== */
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        html {
            scroll-behavior: smooth;
        }
        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
            background: var(--bg);
            color: var(--text-main);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }
        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color 0.2s ease;
        }
        a:hover {
            color: var(--secondary-hover);
            text-decoration: underline;
        }
        img {
            max-width: 100%;
            display: block;
        }
        ul {
            list-style: none;
        }
        button {
            cursor: pointer;
            border: none;
            background: none;
            font-family: inherit;
        }
        .grid-container {
            max-width: 1200px;
            padding-right: 24px;
            padding-left: 24px;
        }
        @media (max-width: 640px) {
            .grid-container {
                padding-right: 16px;
                padding-left: 16px;
            }
        }

        /* ===== 导航 ===== */
        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            box-shadow: var(--shadow-nav);
            height: 60px;
        }
        .header-inner {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 60px;
            gap: 20px;
        }
        .header-left {
            display: flex;
            align-items: center;
            gap: 36px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-main);
            white-space: nowrap;
        }
        .logo:hover {
            color: var(--text-main);
            text-decoration: none;
        }
        .logo-icon {
            width: 34px;
            height: 34px;
            background: var(--primary);
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #fff;
            font-size: 17px;
            font-weight: 800;
            flex-shrink: 0;
        }
        .nav-links {
            display: flex;
            gap: 28px;
            align-items: center;
        }
        .nav-links a {
            font-size: 14px;
            font-weight: 500;
            color: var(--text-main);
            padding: 4px 0;
            position: relative;
            letter-spacing: 0.5px;
            transition: color 0.2s;
        }
        .nav-links a:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .nav-links a.active {
            color: var(--primary);
        }
        .nav-links a.active::after {
            content: '';
            position: absolute;
            left: 0;
            right: 0;
            bottom: -2px;
            height: 2px;
            background: var(--primary);
            border-radius: 2px;
        }
        .header-right {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        .search-wrap {
            position: relative;
        }
        .search-toggle {
            display: flex;
            align-items: center;
            gap: 6px;
            font-size: 14px;
            color: var(--text-muted);
            padding: 8px 14px;
            border: 1px solid var(--border);
            border-radius: 999px;
            background: var(--card);
            transition: all 0.2s;
        }
        .search-toggle:hover {
            border-color: var(--secondary);
            color: var(--secondary);
        }
        .search-dropdown {
            position: absolute;
            right: 0;
            top: 48px;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-hover);
            padding: 12px;
            display: none;
            z-index: 100;
            width: 280px;
        }
        .search-dropdown.active {
            display: flex;
        }
        .search-dropdown input {
            flex: 1;
            border: 1px solid var(--border);
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            outline: none;
            font-family: inherit;
            min-width: 0;
        }
        .search-dropdown input:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 2px rgba(14, 124, 102, 0.15);
        }
        .search-dropdown button {
            background: var(--secondary);
            color: #fff;
            border-radius: 8px;
            padding: 10px 14px;
            font-size: 14px;
            margin-left: 8px;
            white-space: nowrap;
        }
        .header-cta {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: var(--primary);
            color: #fff;
            padding: 8px 20px;
            border-radius: var(--radius-md);
            font-size: 14px;
            font-weight: 600;
            box-shadow: var(--shadow-btn);
            transition: background 0.2s, transform 0.2s;
        }
        .header-cta:hover {
            background: var(--primary-hover);
            color: #fff;
            text-decoration: none;
            transform: translateY(-1px);
        }
        .nav-burger {
            display: none;
            font-size: 22px;
            color: var(--text-main);
            padding: 8px;
        }
        .mobile-drawer {
            display: none;
            position: fixed;
            top: 0;
            right: -280px;
            width: 280px;
            height: 100%;
            background: var(--bg);
            z-index: 1100;
            box-shadow: -4px 0 20px rgba(43, 55, 52, 0.12);
            padding: 30px 24px;
            transition: right 0.3s ease;
        }
        .mobile-drawer.open {
            right: 0;
        }
        .mobile-drawer .drawer-close {
            font-size: 22px;
            color: var(--text-main);
            margin-bottom: 24px;
        }
        .mobile-drawer a {
            display: block;
            padding: 14px 0;
            font-size: 16px;
            color: var(--text-main);
            border-bottom: 1px solid var(--border);
        }
        .mobile-drawer a.active {
            color: var(--primary);
            font-weight: 600;
        }
        .drawer-overlay {
            display: none;
            position: fixed;
            inset: 0;
            background: rgba(43, 55, 52, 0.4);
            z-index: 1050;
        }
        .drawer-overlay.open {
            display: block;
        }

        /* ===== 通用板块 ===== */
        .section {
            padding: var(--spacing-section) 0;
        }
        .section-header {
            text-align: center;
            margin-bottom: 32px;
        }
        .section-tag {
            display: inline-block;
            background: rgba(242, 107, 58, 0.12);
            color: var(--primary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 16px;
            border-radius: 999px;
            margin-bottom: 12px;
            letter-spacing: 1px;
        }
        .section-header h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            color: var(--text-main);
        }
        .section-header p {
            color: var(--text-muted);
            font-size: 15px;
            margin-top: 8px;
        }

        /* ===== Hero ===== */
        .hero {
            padding: 48px 0 24px;
            position: relative;
            overflow: hidden;
        }
        .hero-inner {
            min-height: 70vh;
            align-items: center;
            gap: 40px;
        }
        .hero-visual {
            position: relative;
            border-radius: 22px;
            overflow: hidden;
            height: 480px;
            box-shadow: var(--shadow-hover);
        }
        .hero-visual img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .hero-circle-1 {
            position: absolute;
            width: 180px;
            height: 180px;
            background: rgba(242, 107, 58, 0.22);
            border-radius: 50%;
            top: -50px;
            right: -40px;
            z-index: 2;
        }
        .hero-circle-2 {
            position: absolute;
            width: 90px;
            height: 90px;
            background: rgba(242, 181, 68, 0.3);
            border-radius: 50%;
            bottom: 30px;
            left: -20px;
            z-index: 2;
        }
        .hero-content {
            padding: 20px 0;
        }
        .hero-content h1 {
            font-size: 38px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-main);
            margin-bottom: 16px;
            letter-spacing: 0.5px;
        }
        .hero-sub {
            font-size: 18px;
            color: var(--text-muted);
            line-height: 1.5;
            margin-bottom: 28px;
            font-weight: 400;
        }
        .hero-ctas {
            display: flex;
            gap: 14px;
            flex-wrap: wrap;
            margin-bottom: 28px;
        }
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-size: 16px;
            font-weight: 600;
            transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
            border: none;
            cursor: pointer;
        }
        .btn:focus {
            outline: none;
            box-shadow: 0 0 0 3px rgba(242, 107, 58, 0.3);
        }
        .btn-primary {
            background: var(--primary);
            color: #fff;
            box-shadow: var(--shadow-btn);
        }
        .btn-primary:hover {
            background: var(--primary-hover);
            color: #fff;
            transform: translateY(-2px);
        }
        .btn-primary:active {
            background: #c94d1f;
        }
        .btn-outline {
            background: var(--card);
            color: var(--secondary);
            border: 1px solid var(--border);
        }
        .btn-outline:hover {
            border-color: var(--secondary);
            color: var(--secondary-hover);
            transform: translateY(-2px);
        }
        .btn-small {
            padding: 8px 16px;
            font-size: 14px;
            border-radius: 8px;
        }
        .hero-trust {
            display: flex;
            gap: 22px;
            flex-wrap: wrap;
        }
        .hero-trust li {
            font-size: 14px;
            color: var(--text-muted);
            display: flex;
            align-items: center;
            gap: 6px;
        }
        .hero-trust li::before {
            content: '';
            width: 6px;
            height: 6px;
            background: var(--secondary);
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* ===== 信任徽章条 ===== */
        .trust-strip {
            padding: 24px 0;
        }
        .trust-strip-inner {
            background: var(--card);
            border-radius: var(--radius-lg);
            padding: 16px 24px;
            display: flex;
            justify-content: space-around;
            flex-wrap: wrap;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            gap: 12px;
        }
        .trust-item {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: var(--text-main);
            padding: 6px 8px;
        }
        .trust-item i {
            color: var(--secondary);
            font-size: 18px;
            width: 20px;
            text-align: center;
        }

        /* ===== 爆款课程 ===== */
        .courses-section {
            padding: var(--spacing-section) 0;
        }
        .course-card {
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s, box-shadow 0.3s;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .course-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
        }
        .course-cover {
            position: relative;
            height: 190px;
            overflow: hidden;
        }
        .course-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform 0.3s;
        }
        .course-card:hover .course-cover img {
            transform: scale(1.03);
        }
        .badge-hot {
            position: absolute;
            top: 14px;
            right: 14px;
            background: var(--accent);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.12);
        }
        .course-body {
            padding: 20px 24px 24px;
            flex: 1;
            display: flex;
            flex-direction: column;
        }
        .course-cat {
            font-size: 13px;
            color: var(--secondary);
            font-weight: 500;
            margin-bottom: 4px;
        }
        .course-body h3 {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 8px;
            line-height: 1.5;
        }
        .course-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 16px;
            flex: 1;
        }
        .course-foot {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-top: 4px;
        }
        .course-price {
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }

        /* ===== 评价轮播 ===== */
        .testimonials-section {
            background: #EAF4F0;
            padding: var(--spacing-section) 0;
        }
        .orbit {
            max-width: 720px;
            margin: 0 auto;
            position: relative;
        }
        .orbit-wrapper {
            background: var(--card);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-card);
            padding: 48px 40px;
            text-align: center;
        }
        .orbit-container {
            display: block;
            list-style: none;
            padding: 0;
        }
        .orbit-slide {
            display: none;
        }
        .orbit-slide.is-active {
            display: block;
        }
        .orbit-controls {
            position: absolute;
            top: 50%;
            left: -50px;
            right: -50px;
            transform: translateY(-50%);
            pointer-events: none;
            z-index: 5;
        }
        .orbit-controls button {
            pointer-events: auto;
            width: 42px;
            height: 42px;
            border-radius: 50%;
            background: var(--card);
            border: 1px solid var(--border);
            color: var(--secondary);
            font-size: 16px;
            box-shadow: var(--shadow-card);
            transition: background 0.2s, color 0.2s;
        }
        .orbit-controls button:hover {
            background: var(--secondary);
            color: #fff;
        }
        .orbit-previous {
            float: left;
        }
        .orbit-next {
            float: right;
        }
        .orbit-bullets {
            display: flex;
            justify-content: center;
            gap: 8px;
            margin-top: 20px;
        }
        .orbit-bullets button {
            width: 10px;
            height: 10px;
            border-radius: 999px;
            background: rgba(14, 124, 102, 0.3);
            border: none;
            padding: 0;
            transition: background 0.2s, width 0.2s;
        }
        .orbit-bullets button.is-active {
            background: var(--secondary);
            width: 24px;
        }
        .stars {
            color: var(--accent);
            font-size: 18px;
            letter-spacing: 2px;
            margin-bottom: 20px;
        }
        .testimonial-text {
            font-size: 16px;
            color: var(--text-main);
            line-height: 1.8;
            margin-bottom: 24px;
            font-style: normal;
        }
        .testimonial-author {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
        }
        .author-avatar {
            width: 44px;
            height: 44px;
            border-radius: 50%;
            background: var(--secondary);
            color: #fff;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 16px;
            font-weight: 700;
        }
        .author-name {
            font-size: 15px;
            font-weight: 600;
            color: var(--text-main);
        }
        .author-role {
            font-size: 13px;
            color: var(--text-muted);
        }

        /* ===== 资讯动态 ===== */
        .news-section {
            padding: var(--spacing-section) 0;
        }
        .news-feature {
            display: block;
            background: var(--card);
            border-radius: var(--radius-lg);
            overflow: hidden;
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            transition: transform 0.3s, box-shadow 0.3s;
            margin-bottom: 24px;
            height: 100%;
        }
        .news-feature:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            text-decoration: none;
        }
        .news-feature-cover {
            position: relative;
            height: 240px;
            overflow: hidden;
        }
        .news-feature-cover img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }
        .news-feature-cover .badge {
            position: absolute;
            top: 14px;
            left: 14px;
            background: var(--primary);
            color: #fff;
            font-size: 12px;
            font-weight: 600;
            padding: 3px 12px;
            border-radius: 999px;
        }
        .news-feature-body {
            padding: 20px 24px 24px;
        }
        .news-feature-body h3 {
            font-size: 18px;
            margin-bottom: 8px;
            line-height: 1.5;
            color: var(--text-main);
        }
        .news-feature-body p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 14px;
        }
        .news-feature-body .meta {
            font-size: 13px;
            color: var(--text-muted);
        }
        .news-list {
            display: flex;
            flex-direction: column;
            gap: 16px;
            height: 100%;
        }
        .news-item {
            display: block;
            background: var(--card);
            border-radius: var(--radius-md);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            padding: 18px 20px;
            transition: border-color 0.2s, box-shadow 0.2s;
            text-decoration: none;
        }
        .news-item:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-hover);
            text-decoration: none;
        }
        .news-item h4 {
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            margin-bottom: 6px;
            line-height: 1.4;
        }
        .news-item p {
            font-size: 14px;
            color: var(--text-muted);
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            margin-bottom: 8px;
        }
        .news-item-meta {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 13px;
            color: var(--text-muted);
            flex-wrap: wrap;
        }
        .news-item-meta .badge {
            background: rgba(14, 124, 102, 0.12);
            color: var(--secondary);
            font-size: 12px;
            padding: 2px 10px;
            border-radius: 999px;
            font-weight: 500;
        }
        .empty-state {
            text-align: center;
            padding: 48px 24px;
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px dashed var(--border);
            color: var(--text-muted);
            font-size: 15px;
        }
        .empty-state i {
            font-size: 36px;
            color: var(--border);
            display: block;
            margin-bottom: 12px;
        }

        /* ===== 保障条 ===== */
        .guarantee-section {
            padding: var(--spacing-section) 0;
            background: var(--bg);
        }
        .guarantee-card {
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            padding: 28px 24px;
            text-align: center;
            box-shadow: var(--shadow-card);
            transition: transform 0.2s, box-shadow 0.2s;
            height: 100%;
        }
        .guarantee-card:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-hover);
        }
        .guarantee-icon {
            width: 52px;
            height: 52px;
            border-radius: 50%;
            background: rgba(14, 124, 102, 0.1);
            color: var(--secondary);
            font-size: 22px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 16px;
        }
        .guarantee-card h3 {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 8px;
        }
        .guarantee-card p {
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.6;
        }

        /* ===== FAQ ===== */
        .faq-section {
            padding: var(--spacing-section) 0;
        }
        .faq-accordion {
            max-width: 760px;
            margin: 0 auto;
            background: var(--card);
            border-radius: var(--radius-lg);
            border: 1px solid var(--border);
            box-shadow: var(--shadow-card);
            overflow: hidden;
        }
        .accordion-item {
            border-bottom: 1px solid var(--border);
            background: transparent;
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-title {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 18px 24px;
            font-size: 16px;
            font-weight: 600;
            color: var(--text-main);
            transition: color 0.2s;
            position: relative;
        }
        .accordion-title:hover {
            color: var(--primary);
            text-decoration: none;
        }
        .accordion-title::after {
            content: '+';
            font-size: 22px;
            font-weight: 400;
            color: var(--text-muted);
            transition: transform 0.3s, color 0.3s;
            position: absolute;
            right: 24px;
        }
        .accordion-item.is-active .accordion-title {
            color: var(--primary);
        }
        .accordion-item.is-active .accordion-title::after {
            transform: rotate(45deg);
            color: var(--primary);
        }
        .accordion-content {
            padding: 0 24px 18px;
            font-size: 14px;
            color: var(--text-muted);
            line-height: 1.7;
            max-width: 640px;
        }

        /* ===== CTA ===== */
        .cta-section {
            padding: var(--spacing-section) 0;
        }
        .cta-banner {
            position: relative;
            background: linear-gradient(rgba(14, 124, 102, 0.82), rgba(14, 124, 102, 0.88)), url('/assets/images/backpic/back-2.webp') center / cover no-repeat;
            border-radius: 22px;
            padding: 68px 48px;
            text-align: center;
            color: #fff;
            overflow: hidden;
        }
        .cta-banner h2 {
            font-size: 24px;
            font-weight: 700;
            margin-bottom: 12px;
        }
        .cta-banner p {
            font-size: 16px;
            color: rgba(255, 255, 255, 0.85);
            margin-bottom: 28px;
        }
        .cta-banner .btn {
            background: #fff;
            color: var(--primary);
            font-weight: 700;
            box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
        }
        .cta-banner .btn:hover {
            background: #f8f0ea;
            transform: translateY(-2px);
        }

        /* ===== Footer ===== */
        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, 0.85);
            padding-top: 56px;
        }
        .footer-main {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr;
            gap: 40px;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 24px 40px;
        }
        .footer-brand .logo {
            color: #fff;
            margin-bottom: 14px;
        }
        .footer-brand .logo .logo-icon {
            background: var(--primary);
        }
        .footer-brand p {
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, 0.7);
            max-width: 320px;
        }
        .footer-col h4 {
            font-size: 15px;
            font-weight: 600;
            color: #fff;
            margin-bottom: 16px;
        }
        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, 0.7);
            font-size: 14px;
            padding: 5px 0;
            transition: color 0.2s;
        }
        .footer-col a:hover {
            color: #fff;
            text-decoration: none;
        }
        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, 0.15);
            padding: 18px 24px;
            text-align: center;
            font-size: 13px;
            color: rgba(255, 255, 255, 0.6);
            max-width: 1200px;
            margin: 0 auto;
        }

        /* ===== 响应式 ===== */
        @media (max-width: 1023px) {
            .nav-links {
                display: none;
            }
            .nav-burger {
                display: block;
            }
            .header-cta {
                display: none;
            }
            .mobile-drawer {
                display: block;
            }
            .hero-inner {
                min-height: auto;
            }
            .hero-visual {
                height: 320px;
            }
            .hero-content h1 {
                font-size: 30px;
            }
            .cta-banner {
                padding: 48px 24px;
            }
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
        }
        @media (max-width: 767px) {
            .hero {
                padding: 24px 0 8px;
            }
            .hero-visual {
                height: 240px;
                border-radius: 16px;
            }
            .hero-content h1 {
                font-size: 24px;
            }
            .hero-sub {
                font-size: 16px;
            }
            .hero-ctas {
                flex-direction: column;
            }
            .hero-ctas .btn {
                width: 100%;
                justify-content: center;
            }
            .trust-strip-inner {
                flex-direction: column;
                align-items: center;
                gap: 8px;
            }
            .trust-item {
                width: 100%;
                justify-content: center;
            }
            .section {
                padding: var(--spacing-mobile) 0;
            }
            .section-header h2 {
                font-size: 22px;
            }
            .course-cover {
                height: 160px;
            }
            .orbit-wrapper {
                padding: 32px 20px;
            }
            .orbit-controls {
                left: -10px;
                right: -10px;
            }
            .footer-main {
                grid-template-columns: 1fr;
                padding-bottom: 24px;
            }
            .cta-banner {
                padding: 40px 20px;
                border-radius: 16px;
            }
            .cta-banner h2 {
                font-size: 20px;
            }
            #whatsapp-preview {
                display: none;
            }
        }
        @media (max-width: 520px) {
            .header-inner {
                padding: 0 16px;
            }
            .logo {
                font-size: 17px;
            }
            .logo-icon {
                width: 30px;
                height: 30px;
                font-size: 14px;
            }
            .search-dropdown {
                position: fixed;
                left: 16px;
                right: 16px;
                top: 60px;
                width: auto;
            }
        }

        /* ===== Foundation覆盖 ===== */
        .cell {
            padding: 0 12px;
        }
        .grid-x {
            margin-left: -12px;
            margin-right: -12px;
        }
        @media (max-width: 640px) {
            .cell {
                padding: 0 8px;
            }
            .grid-x {
                margin-left: -8px;
                margin-right: -8px;
            }
        }
        .accordion {
            background: transparent;
            border: none;
            margin: 0;
        }
        .accordion-item {
            border-bottom: 1px solid var(--border);
        }
        .accordion-item:last-child {
            border-bottom: none;
        }
        .accordion-title {
            border: none;
            background: transparent;
            outline: none;
        }
        .accordion-title:hover {
            background: transparent;
        }
        .accordion-content {
            border: none;
            background: transparent;
            display: none;
            padding: 0 24px 18px;
        }
        .accordion-item.is-active .accordion-content {
            display: block;
        }

/* roulang page: article */
:root {
            --primary: #F26B3A;
            --primary-hover: #D95828;
            --primary-light: rgba(242, 107, 58, .14);
            --secondary: #0E7C66;
            --secondary-hover: #0A5F4E;
            --secondary-light: #EAF4F0;
            --bg: #FAF6F0;
            --card: #FFFFFF;
            --border: #E8DED3;
            --text-dark: #2B3734;
            --text-mid: #6B7A76;
            --amber: #F2B544;
            --error: #D94B3D;
            --radius-lg: 16px;
            --radius-md: 10px;
            --radius-pill: 999px;
            --shadow-sm: 0 2px 10px rgba(43, 55, 52, .06);
            --shadow-hover: 0 10px 24px rgba(43, 55, 52, .12);
            --shadow-btn: 0 4px 14px rgba(242, 107, 58, .3);
            --header-h: 60px;
            --container-w: 1200px;
            --space-section: 72px;
            --space-section-mobile: 48px;
        }

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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
            background: var(--bg);
            color: var(--text-dark);
            line-height: 1.75;
            font-size: 16px;
            -webkit-font-smoothing: antialiased;
        }

        body.no-scroll {
            overflow: hidden;
        }

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

        a {
            color: var(--secondary);
            text-decoration: none;
            transition: color .25s ease;
        }

        a:hover {
            color: var(--secondary-hover);
            text-decoration: underline;
        }

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

        @media screen and (max-width: 640px) {
            .container {
                padding: 0 16px;
            }
        }

        .site-header {
            position: sticky;
            top: 0;
            z-index: 1000;
            background: var(--bg);
            border-bottom: 1px solid var(--border);
            height: var(--header-h);
            transition: box-shadow .3s ease;
        }

        .site-header.scrolled {
            box-shadow: 0 2px 12px rgba(43, 55, 52, .08);
        }

        .header-inner {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
            height: 100%;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .header-left {
            display: flex;
            align-items: center;
            gap: 32px;
        }

        .logo {
            display: inline-flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--text-dark) !important;
            text-decoration: none;
            white-space: nowrap;
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--primary);
            color: #fff;
            border-radius: 10px;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            font-size: 18px;
            font-weight: 700;
            box-shadow: var(--shadow-btn);
        }

        .nav-links {
            display: flex;
            align-items: center;
            gap: 24px;
        }

        .nav-links a {
            font-size: 15px;
            font-weight: 500;
            color: var(--text-dark);
            padding: 6px 2px 8px;
            border-bottom: 2px solid transparent;
            letter-spacing: .5px;
            text-decoration: none;
            transition: color .25s ease, border-color .25s ease;
        }

        .nav-links a:hover {
            color: var(--primary);
            text-decoration: none;
        }

        .nav-links a.active {
            color: var(--primary);
            border-bottom-color: var(--primary);
        }

        .header-right {
            display: flex;
            align-items: center;
            gap: 14px;
        }

        .search-wrap {
            position: relative;
        }

        .search-toggle {
            display: inline-flex;
            align-items: center;
            gap: 6px;
            background: none;
            border: none;
            padding: 8px 12px;
            color: var(--text-dark);
            font-size: 14px;
            cursor: pointer;
            border-radius: var(--radius-md);
            transition: background .25s ease, color .25s ease;
        }

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

        .search-dropdown {
            display: none;
            position: absolute;
            right: 0;
            top: calc(100% + 8px);
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            box-shadow: var(--shadow-hover);
            padding: 8px;
            width: 300px;
            z-index: 100;
        }

        .search-dropdown.open {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .search-dropdown input {
            flex: 1;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            padding: 10px 14px;
            font-size: 14px;
            outline: none;
            background: #fff;
            color: var(--text-dark);
            transition: border-color .25s ease, box-shadow .25s ease;
        }

        .search-dropdown input:focus {
            border-color: var(--secondary);
            box-shadow: 0 0 0 3px rgba(14, 124, 102, .15);
        }

        .search-dropdown button {
            background: var(--secondary);
            color: #fff;
            border: none;
            border-radius: 8px;
            padding: 10px 14px;
            cursor: pointer;
            transition: background .25s ease;
        }

        .search-dropdown button:hover {
            background: var(--secondary-hover);
        }

        .header-cta {
            background: var(--primary);
            color: #fff !important;
            padding: 10px 22px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 15px;
            box-shadow: var(--shadow-btn);
            text-decoration: none;
            transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
        }

        .header-cta:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            text-decoration: none;
            box-shadow: 0 6px 18px rgba(242, 107, 58, .35);
        }

        .header-cta:active {
            background: #c94e22;
            transform: translateY(0);
        }

        .nav-burger {
            display: none;
            background: none;
            border: none;
            font-size: 22px;
            color: var(--text-dark);
            cursor: pointer;
            padding: 10px;
            border-radius: 8px;
            transition: background .25s ease;
        }

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

        .mobile-menu {
            display: none;
            position: fixed;
            top: var(--header-h);
            right: 0;
            width: min(320px, 85vw);
            height: calc(100vh - var(--header-h));
            background: var(--bg);
            border-left: 1px solid var(--border);
            box-shadow: -8px 0 24px rgba(43, 55, 52, .12);
            padding: 28px 24px;
            flex-direction: column;
            gap: 8px;
            z-index: 999;
            transform: translateX(100%);
            transition: transform .3s ease;
        }

        .mobile-menu.open {
            transform: translateX(0);
        }

        .mobile-menu a {
            font-size: 16px;
            padding: 14px 8px;
            color: var(--text-dark);
            border-bottom: 1px solid var(--border);
            font-weight: 500;
            text-decoration: none;
            transition: color .25s ease;
        }

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

        .mobile-menu .mobile-menu-cta {
            background: var(--primary);
            color: #fff;
            border-radius: var(--radius-md);
            text-align: center;
            border-bottom: none;
            margin-top: 16px;
            box-shadow: var(--shadow-btn);
        }

        .mobile-menu .mobile-menu-cta:hover {
            background: var(--primary-hover);
            color: #fff;
        }

        .mobile-overlay {
            position: fixed;
            inset: 0;
            background: rgba(43, 55, 52, .42);
            z-index: 998;
            opacity: 0;
            visibility: hidden;
            transition: opacity .3s ease, visibility .3s ease;
        }

        .mobile-overlay.visible {
            opacity: 1;
            visibility: visible;
        }

        @media screen and (max-width: 1024px) {
            .nav-links {
                display: none;
            }

            .nav-burger {
                display: block;
            }

            .mobile-menu {
                display: flex;
            }
        }

        .breadcrumb-wrap {
            background: var(--card);
            border-bottom: 1px solid var(--border);
            padding: 16px 0;
        }

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

        .breadcrumb a {
            color: var(--secondary);
            text-decoration: none;
        }

        .breadcrumb a:hover {
            color: var(--secondary-hover);
            text-decoration: underline;
        }

        .breadcrumb .sep {
            color: #c0b8ae;
            font-size: 12px;
            display: inline-flex;
        }

        .breadcrumb .current {
            color: var(--text-mid);
            overflow: hidden;
            text-overflow: ellipsis;
            white-space: nowrap;
            max-width: 280px;
        }

        .article-section {
            padding: 48px 0 72px;
        }

        .article-paper {
            max-width: 860px;
            margin: 0 auto;
            background: var(--card);
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            box-shadow: var(--shadow-sm);
            padding: 48px 56px;
        }

        .article-header-wrap {
            max-width: 760px;
            margin: 0 auto 32px;
        }

        .article-h1 {
            font-size: 36px;
            font-weight: 700;
            line-height: 1.3;
            color: var(--text-dark);
            margin-bottom: 16px;
        }

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

        .meta-badge {
            background: var(--secondary-light);
            color: var(--secondary);
            font-size: 13px;
            font-weight: 600;
            padding: 4px 14px;
            border-radius: var(--radius-pill);
        }

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

        .article-body-wrap {
            max-width: 760px;
            margin: 0 auto;
        }

        .article-body {
            font-size: 16px;
            line-height: 1.8;
            color: var(--text-dark);
            overflow-wrap: break-word;
        }

        .article-body > *:first-child {
            margin-top: 0;
        }

        .article-body h1,
        .article-body h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            margin: 48px 0 16px;
            padding-bottom: 12px;
            border-bottom: 1px solid var(--border);
        }

        .article-body h3 {
            font-size: 20px;
            font-weight: 600;
            line-height: 1.5;
            margin: 32px 0 12px;
        }

        .article-body h4 {
            font-size: 17px;
            font-weight: 600;
            margin: 24px 0 8px;
        }

        .article-body p {
            margin-bottom: 24px;
        }

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

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

        .article-body img {
            width: 100%;
            height: auto;
            border-radius: 12px;
            margin-bottom: 12px;
        }

        .article-body blockquote {
            border-left: 4px solid var(--primary);
            background: var(--bg);
            padding: 16px 20px;
            margin: 24px 0;
            border-radius: 0 8px 8px 0;
            color: var(--text-mid);
            font-size: 15px;
            line-height: 1.7;
        }

        .article-body blockquote p {
            margin-bottom: 0;
        }

        .article-body ul,
        .article-body ol {
            margin: 16px 0 24px;
            padding-left: 24px;
        }

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

        .article-body table {
            width: 100%;
            border-collapse: collapse;
            margin: 24px 0;
            border-radius: 8px;
            overflow: hidden;
            font-size: 15px;
        }

        .article-body th {
            background: var(--secondary);
            color: #fff;
            padding: 12px 16px;
            text-align: left;
            font-weight: 600;
        }

        .article-body td {
            padding: 12px 16px;
            border-bottom: 1px solid var(--border);
        }

        .article-body tr:nth-child(even) td {
            background: var(--bg);
        }

        .article-body hr {
            border: none;
            border-top: 1px solid var(--border);
            margin: 32px 0;
        }

        .article-body code {
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 2px 8px;
            font-size: 14px;
            font-family: "SFMono-Regular", Consolas, monospace;
        }

        .not-found-box {
            text-align: center;
            padding: 60px 24px 40px;
        }

        .not-found-icon {
            width: 76px;
            height: 76px;
            margin: 0 auto 20px;
            background: var(--secondary-light);
            color: var(--secondary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
        }

        .not-found-box h2 {
            font-size: 26px;
            font-weight: 700;
            margin-bottom: 8px;
        }

        .not-found-box p {
            color: var(--text-mid);
            margin-bottom: 28px;
        }

        .btn-primary {
            background: var(--primary);
            color: #fff;
            padding: 14px 28px;
            border-radius: var(--radius-md);
            font-weight: 600;
            font-size: 16px;
            display: inline-block;
            box-shadow: var(--shadow-btn);
            text-decoration: none;
            transition: background .25s ease, transform .2s ease, box-shadow .25s ease;
        }

        .btn-primary:hover {
            background: var(--primary-hover);
            transform: translateY(-2px);
            text-decoration: none;
            box-shadow: 0 6px 18px rgba(242, 107, 58, .35);
        }

        .btn-primary:active {
            background: #c94e22;
            transform: translateY(0);
        }

        .btn-primary:focus {
            outline: none;
            box-shadow: 0 0 0 4px rgba(242, 107, 58, .3);
        }

        .related-section {
            padding: var(--space-section) 0;
            background: var(--card);
            border-top: 1px solid var(--border);
        }

        .section-heading {
            display: flex;
            align-items: center;
            gap: 16px;
            margin-bottom: 32px;
        }

        .section-heading h2 {
            font-size: 26px;
            font-weight: 700;
            line-height: 1.4;
            margin: 0;
        }

        .heading-line {
            flex: 0 0 auto;
            width: 48px;
            height: 4px;
            border-radius: 2px;
            background: var(--primary);
        }

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

        .related-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: var(--radius-lg);
            overflow: hidden;
            text-decoration: none;
            color: var(--text-dark);
            transition: transform .3s ease, box-shadow .3s ease;
        }

        .related-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-hover);
            text-decoration: none;
            color: var(--text-dark);
        }

        .related-media {
            aspect-ratio: 16 / 9;
            overflow: hidden;
            background: var(--bg);
        }

        .related-media img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: transform .3s ease;
        }

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

        .related-info {
            padding: 16px 20px 20px;
        }

        .related-info h3 {
            font-size: 17px;
            font-weight: 600;
            line-height: 1.5;
            margin-bottom: 8px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }

        .related-date {
            font-size: 13px;
            color: var(--text-mid);
        }

        .back-nav-section {
            padding: 24px 0 64px;
            background: var(--card);
        }

        .back-nav {
            display: flex;
            justify-content: center;
            gap: 40px;
            flex-wrap: wrap;
        }

        .back-link {
            font-size: 15px;
            font-weight: 500;
            color: var(--secondary);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            padding: 10px 20px;
            border: 1px solid var(--border);
            border-radius: var(--radius-md);
            background: #fff;
            text-decoration: none;
            transition: border-color .25s ease, box-shadow .25s ease, transform .2s ease;
        }

        .back-link:hover {
            border-color: var(--secondary);
            box-shadow: var(--shadow-sm);
            transform: translateY(-2px);
            text-decoration: none;
            color: var(--secondary-hover);
        }

        .cta-banner {
            background: linear-gradient(rgba(14, 124, 102, .88), rgba(14, 124, 102, .92)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
            padding: 80px 24px;
            text-align: center;
        }

        .cta-content {
            max-width: 680px;
            margin: 0 auto;
        }

        .cta-content h2 {
            font-size: 28px;
            font-weight: 700;
            color: #fff;
            margin-bottom: 12px;
            line-height: 1.4;
        }

        .cta-content p {
            font-size: 16px;
            color: rgba(255, 255, 255, .9);
            margin-bottom: 28px;
        }

        .btn-light {
            background: #fff;
            color: var(--secondary);
            padding: 14px 32px;
            border-radius: var(--radius-md);
            font-weight: 700;
            font-size: 16px;
            text-decoration: none;
            display: inline-block;
            transition: transform .25s ease, box-shadow .25s ease, background .25s ease;
        }

        .btn-light:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, .18);
            background: #f7f7f7;
            color: var(--secondary-hover);
            text-decoration: none;
        }

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

        .site-footer {
            background: var(--secondary);
            color: rgba(255, 255, 255, .8);
            padding: 64px 0 0;
        }

        .footer-main {
            max-width: var(--container-w);
            margin: 0 auto;
            padding: 0 24px;
            display: grid;
            grid-template-columns: 1.4fr 1fr 1fr;
            gap: 48px;
        }

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

        .footer-brand .logo-icon {
            box-shadow: none;
        }

        .footer-brand p {
            margin-top: 16px;
            font-size: 14px;
            line-height: 1.7;
            color: rgba(255, 255, 255, .75);
        }

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

        .footer-col a {
            display: block;
            color: rgba(255, 255, 255, .75);
            font-size: 14px;
            padding: 6px 0;
            text-decoration: none;
            transition: color .25s ease;
        }

        .footer-col a:hover {
            color: #fff;
            text-decoration: none;
        }

        .footer-bottom {
            border-top: 1px solid rgba(255, 255, 255, .12);
            text-align: center;
            padding: 20px 16px;
            font-size: 13px;
            color: rgba(255, 255, 255, .65);
            margin-top: 48px;
        }

        @media screen and (max-width: 1024px) {
            .footer-main {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media screen and (max-width: 900px) {
            .related-grid {
                grid-template-columns: 1fr 1fr;
            }
        }

        @media screen and (max-width: 768px) {
            .cta-banner {
                padding: 60px 20px;
            }

            .cta-content h2 {
                font-size: 24px;
            }

            .cta-content p {
                font-size: 15px;
            }

            .search-toggle span {
                display: none;
            }

            .search-dropdown {
                width: 260px;
            }

            .article-section {
                padding: 32px 0 48px;
            }

            .article-paper {
                padding: 32px 24px;
                border-radius: 12px;
            }

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

        @media screen and (max-width: 640px) {
            .related-grid {
                grid-template-columns: 1fr;
            }

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

            .footer-brand p {
                font-size: 14px;
            }

            .back-nav {
                flex-direction: column;
                align-items: center;
                gap: 16px;
            }

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

            .breadcrumb-wrap {
                padding: 12px 0;
            }

            .breadcrumb {
                font-size: 13px;
            }

            .breadcrumb .current {
                max-width: 180px;
            }
        }

        @media screen and (max-width: 480px) {
            .search-dropdown {
                position: fixed;
                left: 16px;
                right: 16px;
                top: 68px;
                width: auto;
            }

            .header-cta {
                display: none;
            }

            .article-paper {
                padding: 24px 18px;
            }

            .article-h1 {
                font-size: 24px;
            }

            .article-meta {
                gap: 12px;
            }

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

            .btn-light {
                padding: 12px 24px;
                font-size: 15px;
            }

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

            .related-info h3 {
                font-size: 16px;
            }
        }

/* roulang page: category1 */
:root{
  --primary:#F26B3A;
  --primary-dark:#D95828;
  --primary-light:rgba(242,107,58,.12);
  --accent:#0E7C66;
  --accent-dark:#0A5F4E;
  --accent-light:#EAF4F0;
  --bg:#FAF6F0;
  --card:#FFFFFF;
  --border:#E8DED3;
  --text:#2B3734;
  --muted:#6B7A76;
  --warning:#F2B544;
  --error:#D94B3D;
  --radius-card:16px;
  --radius-btn:10px;
  --radius-input:10px;
  --radius-tag:999px;
  --shadow-card:0 2px 10px rgba(43,55,52,.06);
  --shadow-hover:0 10px 24px rgba(43,55,52,.12);
  --shadow-btn:0 4px 14px rgba(242,107,58,.3);
  --shadow-header:0 2px 12px rgba(43,55,52,.06);
  --transition:.3s ease;
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'PingFang SC','Hiragino Sans GB','Heiti SC','Microsoft YaHei','Source Han Sans CN',sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:16px;
  line-height:1.75;
  -webkit-font-smoothing:antialiased;
}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none;transition:color .2s ease}
a:hover{color:var(--accent-dark);text-decoration:underline}
button{font-family:inherit;cursor:pointer}
h1,h2,h3,h4,h5,p{margin:0}
ul,ol{margin:0;padding:0}
.grid-container{max-width:1200px;padding-left:24px;padding-right:24px}
.grid-margin-x{margin-left:-12px;margin-right:-12px}
.cell{padding-left:12px;padding-right:12px}
@media(max-width:640px){
  .grid-container{padding-left:16px;padding-right:16px}
}
/* ========= Header ========= */
.site-header{
  position:sticky;
  top:0;
  z-index:100;
  background:rgba(250,246,240,.96);
  border-bottom:1px solid var(--border);
  box-shadow:var(--shadow-header);
  backdrop-filter:blur(6px);
}
.header-inner{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px;
  height:60px;
  display:flex;
  align-items:center;
  justify-content:space-between;
}
.header-left{display:flex;align-items:center;gap:32px}
.logo{display:flex;align-items:center;gap:10px;font-weight:700;color:var(--text);font-size:18px;letter-spacing:.5px}
.logo:hover{text-decoration:none;color:var(--text)}
.logo-icon{
  width:34px;height:34px;border-radius:9px;
  background:var(--primary);color:#fff;
  display:inline-flex;align-items:center;justify-content:center;
  font-size:17px;font-weight:700;
  flex-shrink:0;
}
.logo span:last-child{white-space:nowrap}
.nav-links{display:flex;gap:24px;align-items:center}
.nav-links a{
  position:relative;
  font-size:15px;font-weight:500;
  color:var(--text);
  padding:4px 0 6px;
  letter-spacing:.5px;
}
.nav-links a:hover{color:var(--primary);text-decoration:none}
.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:'';
  position:absolute;
  left:0;right:0;bottom:-2px;
  height:2px;
  background:var(--primary);
  border-radius:2px;
}
.nav-mobile-cta{display:none}
.header-right{display:flex;align-items:center;gap:14px}
.search-wrap{position:relative}
.search-toggle{
  display:flex;align-items:center;gap:6px;
  background:none;border:none;
  font-size:14px;color:var(--muted);
  padding:8px 12px;border-radius:8px;
  transition:.2s;
}
.search-toggle:hover{background:var(--primary-light);color:var(--primary)}
.search-dropdown{
  display:none;
  position:absolute;
  top:48px;right:0;
  background:#fff;
  border:1px solid var(--border);
  border-radius:12px;
  box-shadow:var(--shadow-hover);
  padding:8px;
  width:320px;
  z-index:20;
  align-items:center;
  gap:8px;
}
.search-dropdown.open{display:flex}
.search-dropdown input{
  flex:1;
  border:1px solid var(--border);
  border-radius:var(--radius-input);
  padding:10px 14px;
  font-size:14px;
  outline:none;
  color:var(--text);
  background:var(--bg);
  transition:border .2s;
}
.search-dropdown input:focus{border-color:var(--accent);box-shadow:0 0 0 3px rgba(14,124,102,.15)}
.search-dropdown button{
  width:38px;height:38px;
  border:none;border-radius:8px;
  background:var(--accent);color:#fff;
  font-size:15px;
  display:flex;align-items:center;justify-content:center;
  transition:.2s;
}
.search-dropdown button:hover{background:var(--accent-dark)}
.header-cta{
  background:var(--primary);
  color:#fff;
  border-radius:var(--radius-btn);
  padding:10px 22px;
  font-weight:600;
  font-size:15px;
  box-shadow:var(--shadow-btn);
  transition:.3s;
  display:inline-flex;
  align-items:center;
  gap:6px;
}
.header-cta:hover{
  background:var(--primary-dark);
  color:#fff;
  text-decoration:none;
  transform:translateY(-2px);
  box-shadow:0 6px 18px rgba(242,107,58,.35);
}
.nav-burger{
  display:none;
  background:none;border:none;
  font-size:20px;color:var(--text);
  padding:8px;border-radius:8px;
}
.nav-burger:hover{background:var(--primary-light);color:var(--primary)}
/* ========= Section Basics ========= */
.section{padding:72px 0}
.section-head{
  text-align:center;
  max-width:720px;
  margin:0 auto 48px;
}
.section-label{
  display:inline-block;
  background:var(--primary-light);
  color:var(--primary);
  padding:5px 16px;
  border-radius:var(--radius-tag);
  font-size:13px;
  font-weight:600;
  letter-spacing:.5px;
  margin-bottom:14px;
}
.section-head h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:12px}
.section-head p{color:var(--muted);font-size:16px}
.section-head.left{text-align:left;margin-left:0;margin-right:0}
/* ========= Buttons ========= */
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  border-radius:var(--radius-btn);
  padding:14px 32px;
  font-size:16px;
  font-weight:600;
  transition:.3s;
  border:none;
}
.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-btn)}
.btn-primary:hover{background:var(--primary-dark);color:#fff;text-decoration:none;transform:translateY(-2px);box-shadow:0 6px 20px rgba(242,107,58,.38)}
.btn-secondary{background:#fff;color:var(--accent);border:1px solid var(--border);box-shadow:0 2px 8px rgba(43,55,52,.04)}
.btn-secondary:hover{background:var(--accent-light);color:var(--accent-dark);border-color:var(--accent);text-decoration:none;transform:translateY(-2px)}
.btn-white{background:#fff;color:var(--primary);border-radius:var(--radius-btn);padding:14px 34px;font-weight:600;font-size:16px;display:inline-block;box-shadow:0 4px 16px rgba(0,0,0,.16);transition:.3s}
.btn-white:hover{background:#f2f2f2;color:var(--primary-dark);text-decoration:none;transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,.2)}
.btn:focus-visible,.btn-white:focus-visible,.header-cta:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
/* ========= Category Hero ========= */
.category-hero{
  position:relative;
  min-height:72vh;
  display:flex;
  align-items:center;
  padding:110px 0 80px;
  overflow:hidden;
  background:var(--bg);
}
.hero-bg{
  position:absolute;
  inset:0;
  background-size:cover;
  background-position:center;
  opacity:.22;
}
.hero-bg::after{
  content:'';
  position:absolute;
  inset:0;
  background:linear-gradient(90deg,rgba(250,246,240,.98) 30%,rgba(250,246,240,.85) 60%,rgba(250,246,240,.35));
}
.hero-deco{
  position:absolute;
  width:280px;height:280px;
  background:rgba(242,107,58,.14);
  border-radius:50%;
  top:-80px;right:10%;
  z-index:1;
  pointer-events:none;
}
.hero-content{position:relative;z-index:2}
.hero-copy{max-width:600px}
.hero-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:var(--primary-light);
  color:var(--primary);
  padding:6px 18px;
  border-radius:var(--radius-tag);
  font-size:14px;
  font-weight:600;
  margin-bottom:20px;
}
.hero-copy h1{
  font-size:40px;
  line-height:1.3;
  font-weight:700;
  margin-bottom:18px;
  letter-spacing:.5px;
}
.hero-lead{
  font-size:18px;
  color:var(--muted);
  margin-bottom:30px;
  line-height:1.7;
}
.hero-actions{display:flex;gap:16px;flex-wrap:wrap;margin-bottom:34px}
.hero-trust{
  display:flex;
  gap:28px;
  flex-wrap:wrap;
  padding-top:6px;
}
.hero-trust span{
  display:flex;
  align-items:center;
  gap:8px;
  font-size:14px;
  color:var(--muted);
}
.hero-trust span::before{
  content:'';
  width:8px;height:8px;
  background:var(--accent);
  border-radius:50%;
  flex-shrink:0;
}
.hero-visual{position:relative}
.hero-visual::before{
  content:'';
  position:absolute;
  width:200px;height:200px;
  background:rgba(242,107,58,.16);
  border-radius:50%;
  top:-32px;right:-16px;
  z-index:-1;
}
.hero-visual::after{
  content:'';
  position:absolute;
  width:90px;height:90px;
  background:var(--accent-light);
  border-radius:50%;
  bottom:-24px;left:-18px;
  z-index:-1;
}
.hero-visual img{
  width:100%;
  border-radius:20px;
  box-shadow:var(--shadow-hover);
  object-fit:cover;
  aspect-ratio:4/3;
}
/* ========= Intro Split ========= */
.intro-split{padding:80px 0}
.intro-copy .section-label{margin-bottom:14px}
.intro-copy h2{font-size:26px;line-height:1.4;font-weight:700;margin-bottom:16px}
.intro-copy p{color:var(--muted);margin-bottom:16px}
.check-list{list-style:none;margin:20px 0 0;padding:0}
.check-list li{
  position:relative;
  padding-left:30px;
  margin-bottom:12px;
  color:var(--text);
  font-size:15px;
}
.check-list li::before{
  content:'✓';
  position:absolute;
  left:0;top:2px;
  width:22px;height:22px;
  background:var(--accent-light);
  color:var(--accent);
  border-radius:50%;
  font-size:13px;
  font-weight:800;
  display:flex;
  align-items:center;
  justify-content:center;
}
.intro-image-wrap img{
  width:100%;
  border-radius:var(--radius-card);
  box-shadow:var(--shadow-card);
  object-fit:cover;
  aspect-ratio:4/3;
}
/* ========= Guide List ========= */
.guide-list{
  background:var(--card);
  border-top:1px solid var(--border);
  border-bottom:1px solid var(--border);
}
.guide-rank{max-width:840px;margin:0 auto}
.rank-item{
  display:flex;
  align-items:flex-start;
  gap:22px;
  padding:30px 0;
  border-bottom:1px solid var(--border);
  transition:background .2s;
}
.rank-item:last-of-type{border-bottom:none}
.rank-item:hover{background:rgba(250,246,240,.4)}
.rank-num{
  font-size:30px;
  font-weight:800;
  color:rgba(242,107,58,.32);
  line-height:1;
  min-width:55px;
  padding-top:4px;
}
.rank-body{flex:1}
.rank-top{
  display:flex;
  align-items:center;
  gap:12px;
  flex-wrap:wrap;
  margin-bottom:8px;
}
.rank-top h3{font-size:18px;font-weight:600}
.tag{
  display:inline-block;
  background:rgba(242,181,68,.18);
  color:#a97000;
  border-radius:var(--radius-tag);
  padding:2px 14px;
  font-size:13px;
  font-weight:600;
}
.rank-body p{color:var(--muted);font-size:15px;margin-bottom:8px;max-width:640px}
.rank-meta{font-size:13px;color:var(--accent);display:flex;gap:18px;flex-wrap:wrap}
.rank-cta{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-weight:600;
  color:var(--accent);
  white-space:nowrap;
  margin-top:8px;
  font-size:14px;
}
.rank-cta:hover{color:var(--accent-dark)}
.guide-banner{
  margin:36px auto 0;
  max-width:840px;
  background:var(--accent-light);
  border-radius:16px;
  padding:26px 32px;
  border-left:4px solid var(--accent);
}
.guide-banner p{font-size:18px;font-weight:500;color:var(--text);margin-bottom:8px}
.guide-banner cite{font-style:normal;font-size:14px;color:var(--muted)}
/* ========= Process Steps ========= */
.steps-row{display:flex;gap:24px;position:relative}
.step-item{
  flex:1;
  background:var(--card);
  border-radius:var(--radius-card);
  padding:32px 24px;
  box-shadow:var(--shadow-card);
  text-align:center;
  position:relative;
  transition:.3s;
}
.step-item:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.step-num{
  display:block;
  font-size:38px;
  font-weight:800;
  color:rgba(242,107,58,.18);
  line-height:1;
  margin-bottom:12px;
}
.step-icon{
  width:58px;height:58px;
  background:var(--accent-light);
  border-radius:50%;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  color:var(--accent);
  font-size:20px;
  margin-bottom:18px;
}
.step-item h3{font-size:17px;font-weight:600;margin-bottom:10px}
.step-item p{font-size:14px;color:var(--muted);line-height:1.7}
@media(min-width:1024px){
  .steps-row::before{
    content:'';
    position:absolute;
    top:56px;left:16%;right:16%;
    height:2px;
    background:var(--border);
  }
  .step-item::after{
    content:'';
    position:absolute;
    top:54px;left:calc(50% - 6px);
    width:12px;height:12px;
    background:var(--accent);
    border:3px solid var(--card);
    border-radius:50%;
    z-index:2;
  }
}
/* ========= Compare Panel ========= */
.compare-panel{background:var(--accent-light)}
.compare-card{
  background:var(--card);
  border-radius:16px;
  overflow:hidden;
  box-shadow:var(--shadow-card);
  height:100%;
  display:flex;
  flex-direction:column;
  transition:.3s;
}
.compare-card:hover{box-shadow:var(--shadow-hover);transform:translateY(-4px)}
.compare-card img{
  width:100%;
  height:210px;
  object-fit:cover;
}
.compare-body{padding:26px 26px 28px;flex:1;display:flex;flex-direction:column}
.compare-body h3{font-size:18px;font-weight:600;margin-bottom:12px}
.compare-body p{font-size:14px;color:var(--muted);margin-bottom:18px;line-height:1.7}
.compare-body ul{list-style:none;margin:0;padding:0}
.compare-body ul li{
  position:relative;
  padding-left:22px;
  margin-bottom:8px;
  font-size:14px;
}
.compare-body ul li::before{
  content:'·';
  position:absolute;
  left:4px;
  color:var(--primary);
  font-weight:800;
  font-size:18px;
  line-height:1;
}
/* ========= Quote Light ========= */
.quote-light{background:var(--bg)}
.quote-card{
  max-width:760px;
  margin:0 auto;
  text-align:center;
  padding:48px;
  background:var(--card);
  border-radius:16px;
  box-shadow:var(--shadow-card);
}
.quote-stars{
  color:var(--warning);
  font-size:20px;
  margin-bottom:16px;
  letter-spacing:4px;
}
.quote-card p{
  font-size:18px;
  color:var(--text);
  line-height:1.8;
  margin-bottom:24px;
}
.quote-person{
  display:flex;
  align-items:center;
  justify-content:center;
  gap:12px;
}
.avatar{
  width:44px;height:44px;
  background:var(--accent);
  color:#fff;
  border-radius:50%;
  display:flex;
  align-items:center;
  justify-content:center;
  font-weight:600;
  font-size:16px;
}
.quote-person .name{font-weight:600;font-size:15px}
.quote-person .role{font-size:13px;color:var(--muted)}
/* ========= FAQ ========= */
.faq-list{max-width:800px;margin:0 auto}
.faq-item{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:12px;
  margin-bottom:12px;
  overflow:hidden;
  transition:.25s;
}
.faq-item:hover{border-color:rgba(242,107,58,.4)}
.faq-q{
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:16px;
  width:100%;
  background:none;
  border:none;
  padding:20px 24px;
  font-size:16px;
  font-weight:600;
  color:var(--text);
  text-align:left;
  transition:.2s;
}
.faq-q:hover{color:var(--primary)}
.faq-q i{
  transition:transform .3s;
  color:var(--primary);
  font-size:16px;
  flex-shrink:0;
}
.faq-item.open .faq-q i{transform:rotate(45deg)}
.faq-item.open .faq-q{color:var(--primary)}
.faq-a{
  display:none;
  padding:16px 24px 22px;
  border-top:1px solid var(--border);
}
.faq-a p{font-size:14px;color:var(--muted);line-height:1.7;max-width:640px}
.faq-item.open .faq-a{display:block}
/* ========= CTA Panel ========= */
.cta-panel{padding:56px 0}
.cta-inner{
  position:relative;
  background-size:cover;
  background-position:center;
  border-radius:24px;
  padding:72px 40px;
  text-align:center;
  overflow:hidden;
}
.cta-inner::before{
  content:'';
  position:absolute;
  inset:0;
  background:rgba(14,124,102,.88);
}
.cta-inner h2,.cta-inner p,.cta-inner a{position:relative;z-index:2}
.cta-inner h2{
  color:#fff;
  font-size:28px;
  font-weight:700;
  margin-bottom:12px;
}
.cta-inner p{
  color:rgba(255,255,255,.92);
  margin-bottom:28px;
  font-size:16px;
}
/* ========= Footer ========= */
.site-footer{
  background:var(--accent-dark);
  color:rgba(255,255,255,.85);
  padding-top:48px;
}
.footer-main{
  max-width:1200px;
  margin:0 auto;
  padding:0 24px 40px;
  display:grid;
  grid-template-columns:2fr 1fr 1fr;
  gap:48px;
}
.footer-brand .logo{
  color:#fff;
  margin-bottom:16px;
  display:inline-flex;
}
.footer-brand .logo:hover{color:#fff}
.footer-brand .logo .logo-icon{background:var(--primary)}
.footer-brand p{
  font-size:14px;
  line-height:1.8;
  margin:0;
  max-width:360px;
  color:rgba(255,255,255,.72);
}
.footer-col h4{
  color:#fff;
  font-size:16px;
  margin-bottom:16px;
  font-weight:600;
}
.footer-col a{
  display:flex;
  align-items:center;
  gap:8px;
  color:rgba(255,255,255,.75);
  font-size:14px;
  margin-bottom:12px;
  transition:.2s;
}
.footer-col a:hover{color:#fff;text-decoration:none}
.footer-col a i{font-size:13px}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.12);
  text-align:center;
  padding:20px 24px;
  font-size:13px;
  color:rgba(255,255,255,.6);
}
/* ========= Mobile Responsive ========= */
@media(max-width:1023px){
  .header-inner{padding:0 16px}
  .nav-links{
    position:fixed;
    top:0;right:-320px;
    width:300px;
    height:100vh;
    background:var(--bg);
    box-shadow:-4px 0 24px rgba(0,0,0,.12);
    flex-direction:column;
    align-items:stretch;
    padding:80px 24px 32px;
    gap:0;
    transition:right .3s ease;
    z-index:100;
    overflow-y:auto;
  }
  .nav-links.open{right:0}
  .nav-links a{
    font-size:16px;
    padding:14px 4px;
    border-bottom:1px solid var(--border);
  }
  .nav-links a.active::after{display:none}
  .nav-links a.active{color:var(--primary)}
  .nav-mobile-cta{
    display:flex;
    align-items:center;
    justify-content:center;
    margin-top:20px;
    background:var(--primary);
    color:#fff;
    border-radius:var(--radius-btn);
    padding:12px 16px;
    font-weight:600;
    border-bottom:none;
    box-shadow:var(--shadow-btn);
  }
  .nav-mobile-cta:hover{
    background:var(--primary-dark);
    color:#fff;
    text-decoration:none;
  }
  .nav-burger{display:inline-block}
  .header-cta{display:none}
  .search-toggle span{display:none}
  .search-dropdown{width:280px}
  .category-hero{min-height:auto;padding:80px 0 64px}
  .hero-copy h1{font-size:32px}
  .hero-lead{font-size:16px}
  .hero-actions .btn{width:100%}
  .hero-trust{gap:16px}
  .hero-trust span{font-size:13px}
  .hero-visual{margin-top:40px}
  .intro-split,.section{padding:56px 0}
  .intro-copy h2{font-size:22px}
  .section-head h2{font-size:22px}
  .section-head p{font-size:15px}
  .compare-card{margin-bottom:24px}
  .compare-body{padding:22px}
  .cta-inner{padding:56px 24px}
  .cta-inner h2{font-size:24px}
  .footer-main{grid-template-columns:1fr;gap:32px}
}
@media(max-width:640px){
  .header-inner{padding:0 12px}
  .hero-copy h1{font-size:28px}
  .section-head h2{font-size:21px}
  .section-head p{font-size:14px}
  .steps-row{flex-direction:column;gap:16px}
  .steps-row::before{display:none}
  .step-item::after{display:none}
  .rank-item{flex-direction:column;gap:12px}
  .rank-num{min-width:0}
  .guide-banner{padding:20px}
  .guide-banner p{font-size:16px}
  .quote-card{padding:32px 22px}
  .quote-card p{font-size:16px}
  .footer-main{padding:0 16px 32px}
  .footer-bottom{padding:16px}
}

/* roulang page: category2 */
:root {
    --coral: #F26B3A;
    --coral-dark: #D95828;
    --coral-deep: #C94E22;
    --teal: #0E7C66;
    --teal-dark: #0A5F4E;
    --teal-soft: #EAF4F0;
    --bg: #FAF6F0;
    --card: #FFFFFF;
    --border: #E8DED3;
    --text: #2B3734;
    --text-light: #6B7A76;
    --amber: #F2B544;
    --error: #D94B3D;
    --radius-card: 16px;
    --radius-btn: 10px;
    --radius-input: 10px;
    --radius-pill: 999px;
    --shadow-card: 0 2px 10px rgba(43,55,52,.06);
    --shadow-hover: 0 10px 24px rgba(43,55,52,.12);
    --shadow-btn: 0 4px 14px rgba(242,107,58,.3);
    --shadow-header: 0 2px 12px rgba(43,55,52,.06);
    --font-sans: "PingFang SC", "Hiragino Sans GB", "Heiti SC", "Microsoft YaHei", "Source Han Sans CN", sans-serif;
    --space-lg: 72px;
    --space-md: 48px;
    --space-sm: 24px;
}
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}
html {
    scroll-behavior: smooth;
}
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    font-size: 16px;
    line-height: 1.75;
    -webkit-font-smoothing: antialiased;
}
img {
    max-width: 100%;
    display: block;
}
a {
    text-decoration: none;
    color: var(--teal);
    transition: color .2s ease;
}
a:hover {
    color: var(--teal-dark);
    text-decoration: underline;
}
button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}
input, textarea {
    font-family: inherit;
    outline: none;
}
ul {
    list-style: none;
}
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}
.section {
    padding: var(--space-lg) 0;
}
.section-head {
    margin-bottom: 32px;
}
.section-tag {
    display: inline-block;
    font-size: 13px;
    font-weight: 600;
    color: var(--teal);
    background: var(--teal-soft);
    padding: 4px 14px;
    border-radius: var(--radius-pill);
    letter-spacing: .5px;
    margin-bottom: 12px;
}
.section-title {
    font-size: 26px;
    font-weight: 700;
    line-height: 1.4;
    color: var(--text);
}
.section-sub {
    font-size: 15px;
    color: var(--text-light);
    margin-top: 8px;
    max-width: 640px;
}
/* ===== Header ===== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: 60px;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    transition: box-shadow .3s ease;
}
.site-header.scrolled {
    box-shadow: var(--shadow-header);
}
.header-inner {
    max-width: 1200px;
    height: 100%;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.header-left {
    display: flex;
    align-items: center;
    gap: 36px;
}
.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none !important;
}
.logo-icon {
    width: 34px;
    height: 34px;
    background: var(--coral);
    border-radius: 8px;
    color: #fff;
    font-weight: 700;
    font-size: 18px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 2px 8px rgba(242,107,58,.35);
}
.logo span:last-child {
    font-size: 18px;
    font-weight: 700;
    color: var(--text);
    letter-spacing: .5px;
    white-space: nowrap;
}
.nav-links {
    display: flex;
    gap: 28px;
}
.nav-links a {
    font-size: 14.5px;
    color: var(--text);
    font-weight: 500;
    padding: 4px 0;
    border-bottom: 2px solid transparent;
    transition: color .2s, border-color .2s;
    text-decoration: none;
}
.nav-links a:hover {
    color: var(--coral);
    border-bottom-color: var(--coral);
}
.nav-links a.active {
    color: var(--coral);
    border-bottom-color: var(--coral);
}
.header-right {
    display: flex;
    align-items: center;
    gap: 16px;
}
.search-wrap {
    position: relative;
}
.search-toggle {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    color: var(--text);
    padding: 8px 14px;
    border-radius: var(--radius-pill);
    background: transparent;
    transition: background .2s;
}
.search-toggle:hover {
    background: rgba(232,222,211,.5);
    color: var(--teal);
}
.search-dropdown {
    position: absolute;
    right: 0;
    top: calc(100% + 8px);
    width: 320px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: var(--shadow-hover);
    padding: 12px;
    display: flex;
    gap: 8px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-6px);
    transition: opacity .25s, transform .25s, visibility .25s;
}
.search-dropdown.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}
.search-dropdown input {
    flex: 1;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 10px 14px;
    font-size: 14px;
    background: var(--bg);
    transition: border-color .2s;
}
.search-dropdown input:focus {
    border-color: var(--teal);
    box-shadow: 0 0 0 2px rgba(14,124,102,.15);
}
.search-dropdown button {
    width: 42px;
    background: var(--teal);
    color: #fff;
    border-radius: 8px;
    font-size: 14px;
    transition: background .2s;
    display: flex;
    align-items: center;
    justify-content: center;
}
.search-dropdown button:hover {
    background: var(--teal-dark);
}
.header-cta {
    display: inline-flex;
    align-items: center;
    background: var(--coral);
    color: #fff !important;
    font-size: 14px;
    font-weight: 600;
    padding: 10px 22px;
    border-radius: var(--radius-btn);
    transition: background .2s, transform .2s, box-shadow .2s;
    box-shadow: var(--shadow-btn);
    text-decoration: none !important;
}
.header-cta:hover {
    background: var(--coral-dark);
    transform: translateY(-2px);
}
.nav-burger {
    display: none;
    font-size: 22px;
    color: var(--text);
    width: 44px;
    height: 44px;
    border-radius: 8px;
    align-items: center;
    justify-content: center;
}
.nav-burger:hover {
    background: rgba(232,222,211,.5);
}
/* ===== Hero ===== */
.resource-hero {
    position: relative;
    min-height: 72vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, rgba(10,60,50,.82), rgba(14,124,102,.72)), url('/assets/images/backpic/back-1.webp') center/cover no-repeat;
    padding: 120px 0 80px;
    margin-top: 60px;
    overflow: hidden;
}
.resource-hero::after {
    content: "";
    position: absolute;
    right: -60px;
    bottom: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,.18);
}
.resource-hero::before {
    content: "";
    position: absolute;
    right: 80px;
    bottom: -50px;
    width: 130px;
    height: 130px;
    border-radius: 50%;
    background: rgba(242,107,58,.35);
}
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 760px;
}
.hero-crumb {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: rgba(255,255,255,.75);
    background: rgba(255,255,255,.12);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: 22px;
}
.hero-crumb a {
    color: rgba(255,255,255,.85);
}
.hero-crumb a:hover {
    color: #fff;
}
.hero-crumb .sep {
    opacity: .5;
}
.hero-crumb .current {
    color: #fff;
    font-weight: 500;
}
.resource-hero h1 {
    font-size: 38px;
    font-weight: 700;
    color: #fff;
    line-height: 1.3;
    margin-bottom: 16px;
}
.resource-hero h1 span {
    color: var(--amber);
}
.hero-desc {
    font-size: 18px;
    color: rgba(255,255,255,.9);
    line-height: 1.7;
    margin-bottom: 32px;
    max-width: 560px;
}
.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 36px;
}
.btn-primary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--coral);
    color: #fff !important;
    font-size: 16px;
    font-weight: 600;
    padding: 14px 32px;
    border-radius: var(--radius-btn);
    box-shadow: var(--shadow-btn);
    transition: background .2s, transform .2s, box-shadow .2s;
    text-decoration: none !important;
}
.btn-primary:hover {
    background: var(--coral-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(242,107,58,.38);
}
.btn-primary:active {
    background: var(--coral-deep);
    transform: translateY(0);
}
.btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: transparent;
    color: #fff !important;
    font-size: 16px;
    font-weight: 500;
    padding: 13px 28px;
    border-radius: var(--radius-btn);
    border: 1.5px solid rgba(255,255,255,.6);
    transition: background .2s, border-color .2s;
    text-decoration: none !important;
}
.btn-secondary:hover {
    background: rgba(255,255,255,.12);
    border-color: #fff;
}
.hero-trust {
    display: flex;
    gap: 28px;
    flex-wrap: wrap;
}
.hero-trust span {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: rgba(255,255,255,.85);
}
.hero-trust span::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--amber);
    flex-shrink: 0;
}
/* ===== Intro / 图文并排 ===== */
.intro-section {
    padding-top: var(--space-lg);
}
.intro-card {
    display: flex;
    align-items: center;
    gap: 48px;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
    padding: 32px;
}
.intro-media {
    flex: 1;
    border-radius: 12px;
    overflow: hidden;
    min-height: 260px;
    background: var(--teal-soft);
}
.intro-media img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    min-height: 260px;
}
.intro-text {
    flex: 1;
}
.intro-text h2 {
    font-size: 24px;
    font-weight: 700;
    margin-bottom: 16px;
    line-height: 1.4;
}
.intro-text p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.85;
    margin-bottom: 16px;
}
.intro-text p:last-child {
    margin-bottom: 0;
}
.intro-points {
    display: flex;
    flex-wrap: wrap;
    gap: 12px 24px;
    margin-top: 16px;
}
.intro-points li {
    font-size: 14px;
    color: var(--text);
    display: flex;
    align-items: center;
    gap: 8px;
}
.intro-points li i {
    color: var(--teal);
    font-size: 14px;
}
/* ===== 排行 ===== */
.rank-section {
    background: var(--card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.rank-header {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    margin-bottom: 32px;
    flex-wrap: wrap;
    gap: 16px;
}
.rank-note {
    font-size: 14px;
    color: var(--text-light);
}
.rank-list {
    display: flex;
    flex-direction: column;
    gap: 0;
}
.rank-item {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 24px 16px;
    border-bottom: 1px solid var(--border);
    transition: background .2s;
}
.rank-item:last-child {
    border-bottom: none;
}
.rank-item:hover {
    background: var(--bg);
}
.rank-num {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--teal-soft);
    color: var(--teal);
    font-size: 18px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.rank-item:nth-child(1) .rank-num {
    background: var(--coral);
    color: #fff;
}
.rank-item:nth-child(2) .rank-num {
    background: var(--amber);
    color: #fff;
}
.rank-item:nth-child(3) .rank-num {
    background: var(--teal);
    color: #fff;
}
.rank-info {
    flex: 1;
    min-width: 0;
}
.rank-info h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text);
}
.rank-info p {
    font-size: 14px;
    color: var(--text-light);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.rank-tags {
    display: flex;
    gap: 8px;
    flex-shrink: 0;
}
.badge-hot {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: #B55000;
    background: #FFF1E0;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-weight: 600;
}
.badge-new {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 12px;
    color: var(--teal);
    background: var(--teal-soft);
    padding: 4px 12px;
    border-radius: var(--radius-pill);
    font-weight: 600;
}
.rank-meta {
    font-size: 13px;
    color: var(--text-light);
    flex-shrink: 0;
    min-width: 80px;
    text-align: right;
}
/* ===== 专题卡片 ===== */
.topic-section {
    background: var(--bg);
}
.topic-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}
.topic-card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    overflow: hidden;
    transition: transform .3s, box-shadow .3s;
    box-shadow: var(--shadow-card);
}
.topic-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}
.topic-cover {
    position: relative;
    height: 170px;
    overflow: hidden;
}
.topic-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform .4s;
}
.topic-card:hover .topic-cover img {
    transform: scale(1.04);
}
.topic-cover::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(43,55,52,.55));
}
.topic-label {
    position: absolute;
    left: 14px;
    bottom: 14px;
    z-index: 2;
    background: rgba(255,255,255,.92);
    color: var(--teal);
    font-size: 12px;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-pill);
}
.topic-body {
    padding: 20px 20px 24px;
}
.topic-body h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text);
}
.topic-body p {
    font-size: 13.5px;
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 14px;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}
.topic-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
    font-weight: 600;
    color: var(--teal);
    text-decoration: none !important;
    transition: gap .2s;
}
.topic-link:hover {
    gap: 10px;
    color: var(--teal-dark);
}
/* ===== 数据横幅 ===== */
.stats-banner {
    background: linear-gradient(120deg, rgba(14,124,102,.94), rgba(10,95,78,.94)), url('/assets/images/backpic/back-2.webp') center/cover no-repeat;
    padding: 64px 0;
    color: #fff;
}
.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}
.stat-item .stat-num {
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 6px;
}
.stat-item .stat-label {
    font-size: 14px;
    color: rgba(255,255,255,.8);
}
/* ===== 适用人群 ===== */
.audience-section {
    background: var(--card);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}
.audience-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
}
.audience-item {
    display: flex;
    gap: 20px;
    padding: 28px;
    background: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    transition: transform .3s, box-shadow .3s;
}
.audience-item:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}
.audience-icon {
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--teal-soft);
    color: var(--teal);
    font-size: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.audience-text h3 {
    font-size: 17px;
    font-weight: 600;
    margin-bottom: 6px;
}
.audience-text p {
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.65;
    margin-bottom: 8px;
}
.audience-text .tag-group {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}
.tag {
    display: inline-block;
    font-size: 12px;
    color: var(--teal);
    background: var(--teal-soft);
    padding: 3px 10px;
    border-radius: var(--radius-pill);
}
/* ===== FAQ ===== */
.faq-section {
    background: var(--bg);
}
.faq-list {
    max-width: 820px;
    margin: 0 auto;
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-card);
    overflow: hidden;
}
.faq-item {
    border-bottom: 1px solid var(--border);
}
.faq-item:last-child {
    border-bottom: none;
}
.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    font-size: 16px;
    font-weight: 600;
    color: var(--text);
    background: transparent;
    transition: background .2s, color .2s;
    text-align: left;
    min-height: 56px;
}
.faq-question:hover {
    background: var(--bg);
}
.faq-question .icon {
    font-size: 18px;
    color: var(--teal);
    transition: transform .3s;
    flex-shrink: 0;
    margin-left: 16px;
}
.faq-item.active .faq-question {
    color: var(--coral);
}
.faq-item.active .icon {
    transform: rotate(45deg);
    color: var(--coral);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease;
}
.faq-answer-inner {
    padding: 0 24px 20px;
    font-size: 14px;
    color: var(--text-light);
    line-height: 1.7;
}
/* ===== CTA ===== */
.resource-cta {
    position: relative;
    background: linear-gradient(rgba(14,124,102,.88), rgba(10,95,78,.92)), url('/assets/images/backpic/back-3.webp') center/cover no-repeat;
    padding: 80px 0;
    text-align: center;
    color: #fff;
}
.resource-cta h2 {
    font-size: 30px;
    font-weight: 700;
    margin-bottom: 12px;
}
.resource-cta p {
    font-size: 16px;
    color: rgba(255,255,255,.85);
    margin-bottom: 28px;
}
.cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--coral);
    color: #fff !important;
    font-size: 17px;
    font-weight: 600;
    padding: 16px 40px;
    border-radius: var(--radius-btn);
    box-shadow: 0 4px 18px rgba(242,107,58,.4);
    transition: background .2s, transform .2s;
    text-decoration: none !important;
}
.cta-btn:hover {
    background: var(--coral-dark);
    transform: translateY(-3px);
}
.cta-note {
    margin-top: 16px;
    font-size: 13px;
    color: rgba(255,255,255,.6);
}
/* ===== Footer ===== */
.site-footer {
    background: var(--teal-dark);
    color: rgba(255,255,255,.85);
    padding: 56px 0 0;
}
.footer-main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px 40px;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 48px;
}
.footer-brand .logo {
    margin-bottom: 16px;
}
.footer-brand .logo-icon {
    background: var(--coral);
    color: #fff;
}
.footer-brand .logo span:last-child {
    color: #fff;
}
.footer-brand p {
    font-size: 14px;
    line-height: 1.7;
    color: rgba(255,255,255,.7);
    max-width: 360px;
}
.footer-col h4 {
    font-size: 15px;
    font-weight: 600;
    color: #fff;
    margin-bottom: 18px;
    letter-spacing: .5px;
}
.footer-col a {
    display: block;
    font-size: 14px;
    color: rgba(255,255,255,.7);
    padding: 5px 0;
    text-decoration: none !important;
    transition: color .2s;
}
.footer-col a:hover {
    color: var(--amber);
}
.footer-col a i {
    margin-right: 6px;
    width: 16px;
}
.footer-bottom {
    border-top: 1px solid rgba(255,255,255,.12);
    padding: 18px 24px;
    text-align: center;
    font-size: 13px;
    color: rgba(255,255,255,.5);
}
/* ===== 响应式 ===== */
@media (max-width:1024px) {
    .nav-links {
        gap: 18px;
    }
    .topic-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 24px;
    }
    .intro-card {
        flex-direction: column;
        gap: 24px;
        padding: 24px;
    }
    .intro-media,
    .intro-text {
        flex: none;
        width: 100%;
    }
}
@media (max-width:768px) {
    .site-header {
        height: 56px;
    }
    .resource-hero {
        margin-top: 56px;
        min-height: auto;
        padding: 80px 0 60px;
    }
    .nav-links,
    .header-cta,
    .search-toggle span {
        display: none;
    }
    .nav-burger {
        display: flex;
    }
    .nav-links.open {
        display: flex;
        flex-direction: column;
        position: fixed;
        top: 56px;
        right: 0;
        bottom: 0;
        width: 280px;
        background: var(--bg);
        border-left: 1px solid var(--border);
        padding: 32px 24px;
        gap: 8px;
        box-shadow: -8px 0 24px rgba(43,55,52,.08);
        z-index: 999;
    }
    .nav-links.open a {
        display: block;
        padding: 14px 12px;
        font-size: 16px;
        border-bottom: none;
        border-radius: 8px;
    }
    .nav-links.open a:hover,
    .nav-links.open a.active {
        background: rgba(242,107,58,.08);
        border-bottom: none;
    }
    .search-dropdown {
        width: 260px;
    }
    .section {
        padding: var(--space-md) 0;
    }
    .resource-hero h1 {
        font-size: 28px;
    }
    .hero-desc {
        font-size: 16px;
    }
    .topic-grid {
        grid-template-columns: 1fr;
    }
    .audience-grid {
        grid-template-columns: 1fr;
    }
    .footer-main {
        grid-template-columns: 1fr;
        gap: 32px;
    }
    .rank-item {
        flex-wrap: wrap;
        gap: 12px;
    }
    .rank-tags {
        flex: 1;
        justify-content: flex-start;
    }
    .rank-meta {
        min-width: auto;
        text-align: left;
    }
    .stats-grid {
        grid-template-columns: 2fr 2fr;
    }
}
@media (max-width:520px) {
    .container {
        padding: 0 16px;
    }
    .header-inner {
        padding: 0 16px;
    }
    .search-toggle {
        padding: 8px 10px;
    }
    .hero-actions {
        flex-direction: column;
        width: 100%;
    }
    .hero-actions .btn-primary,
    .hero-actions .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    .section-title {
        font-size: 22px;
    }
    .stats-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }
    .stat-item .stat-num {
        font-size: 30px;
    }
    .audience-item {
        padding: 20px;
        flex-direction: column;
        gap: 14px;
    }
    .faq-question {
        font-size: 15px;
        padding: 18px 16px;
    }
    .faq-answer-inner {
        padding: 0 16px 18px;
    }
    .resource-cta h2 {
        font-size: 24px;
    }
    .cta-btn {
        width: 100%;
        justify-content: center;
    }
    .rank-num {
        width: 40px;
        height: 40px;
        font-size: 16px;
    }
}