/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

/* 链接样式 */
a {
    color: #007bff;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* 容器 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 无障碍 */
.skip-link {
    position: absolute;
    top: 0;
    left: 0;
    padding: 8px 16px;
    background: var(--brand);
    color: #fff;
    z-index: 10000;
    transform: translateY(-100%);
    transition: transform 0.2s;
}
.skip-link:focus {
    transform: translateY(0);
}
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 15px 0;
}

.logo img {
    max-height: 50px;
}

/* 主导航菜单 */
.main-nav ul {
    list-style: none;
    display: flex;
    gap: 30px;
}

.main-nav a {
    color: #333;
    font-weight: 500;
    padding: 5px 10px;
    border-radius: 4px;
    transition: all 0.3s ease;
}

.main-nav a:hover,
.main-nav a.active {
    color: #007bff;
    background-color: #f0f8ff;
}

/* 移动端菜单按钮 */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主要内容区域 */
.main-content {
    margin-top: 80px;
    min-height: calc(100vh - 80px);
}

/* 页面头部 */
.page-header {
    background-color: #f8f9fa;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.page-header p {
    font-size: 18px;
    color: #666;
}

/* 英雄横幅 */
.hero-banner {
    position: relative;
    height: 500px;
    overflow: hidden;
    margin-top: -80px;
}

.hero-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    display: none;
    align-items: center;
}

.hero-slide.active {
    display: flex;
}

.hero-content {
    max-width: 600px;
    padding: 40px;
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    border-radius: 8px;
    animation: fadeIn 0.8s ease;
}

.hero-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
}

/* 章节头部 */
.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-header h2 {
    font-size: 36px;
    margin-bottom: 15px;
    color: #333;
}

.section-header p {
    font-size: 18px;
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

/* 产品网格 */
.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.product-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
}

.product-image {
    height: 250px;
    overflow: hidden;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.product-card:hover .product-image img {
    transform: scale(1.1);
}

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.product-info p {
    color: #666;
    margin-bottom: 15px;
}

.product-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.price {
    font-size: 24px;
    font-weight: bold;
    color: #e74c3c;
}

.category {
    color: #666;
    font-size: 14px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 500;
    text-align: center;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: #007bff;
    color: #fff;
}

.btn-primary:hover {
    background-color: #0056b3;
}

.btn-secondary {
    background-color: #6c757d;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #545b62;
}

.btn-lg {
    padding: 12px 30px;
    font-size: 18px;
}

/* 解决方案网格 */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.solution-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.solution-image {
    height: 250px;
    overflow: hidden;
}

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

.solution-content {
    padding: 20px;
}

.solution-content h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: #333;
}

.solution-content p {
    color: #666;
    margin-bottom: 15px;
}

.solution-features ul {
    list-style: none;
    padding-left: 0;
}

.solution-features li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 8px;
}

.solution-features li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* 新闻网格 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.news-info {
    padding: 20px;
}

.news-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #333;
}

.news-info p {
    color: #666;
    margin-bottom: 15px;
}

.read-more {
    color: #007bff;
    font-weight: 500;
    display: inline-flex;
    align-items: center;
    gap: 5px;
}

.read-more:hover {
    text-decoration: none;
}

/* 关于我们区域 */
.about-section {
    background-color: #f8f9fa;
    padding: 80px 0;
}

.about-content {
    display: flex;
    gap: 40px;
    align-items: center;
}

.about-image {
    flex: 1;
    flex-shrink: 0;
}

.about-image img {
    width: 100%;
    height: auto;
    border-radius: 8px;
}

.about-text {
    flex: 1;
}

.about-text h2 {
    font-size: 32px;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    color: #666;
    margin-bottom: 15px;
}

.about-text h3 {
    font-size: 24px;
    margin: 30px 0 15px;
    color: #333;
}

.about-text ul {
    list-style: none;
    padding-left: 0;
}

.about-text li {
    position: relative;
    padding-left: 20px;
    margin-bottom: 10px;
    color: #666;
}

.about-text li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #28a745;
    font-weight: bold;
}

/* FAQ 手风琴 */
.faq-section {
    padding: 64px 0 88px;
}

.faq-list {
    max-width: var(--reading-width);
    margin: 0 auto;
}

.faq-item {
    margin-bottom: 14px;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    overflow: hidden;
    transition: border-color 180ms ease;
}

.faq-item:focus-within {
    border-color: var(--brand);
    box-shadow: 0 0 0 3px rgba(22, 155, 150, 0.12);
}

.faq-question {
    display: flex;
    width: 100%;
    padding: 20px 22px;
    border: 0;
    background: transparent;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--ink);
    font-size: 17px;
    font-weight: 650;
    line-height: 1.45;
    text-align: left;
    cursor: pointer;
    transition: color 180ms ease, background-color 180ms ease;
}

.faq-question:hover {
    color: var(--brand-dark);
    background: var(--brand-soft);
}

.faq-icon {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--surface-soft);
    color: var(--brand);
    font-size: 20px;
    font-weight: 400;
    line-height: 1;
    transition: transform 220ms ease, background-color 180ms ease;
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 350ms ease, padding 200ms ease;
}

.faq-answer p {
    padding: 0 22px 20px;
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.8;
}

/* 展开态 */
.faq-item.open {
    border-color: #b7d7d3;
}

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

.faq-item.open .faq-answer {
    max-height: 600px;
}

/* 页脚 */
.footer {
    background-color: #2c3e50;
    color: #ecf0f1;
    padding: 50px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-section p {
    color: #bdc3c7;
    margin-bottom: 10px;
}

.footer-section ul {
    list-style: none;
    padding-left: 0;
}

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

.footer-section a {
    color: #bdc3c7;
    text-decoration: none;
    transition: color 0.3s ease;
}

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

.footer-bottom {
    border-top: 1px solid #34495e;
    padding-top: 24px;
    text-align: center;
    color: #8e9b9f;
    font-size: 13px;
    line-height: 2;
}

.footer-copyright {
    margin: 0;
    color: #bdc3c7;
    font-size: 14px;
}

.footer-info {
    color: #7d8b8f;
    font-size: 12px;
}

.footer-links {
    margin-top: 4px;
}

.footer-links a,
.footer-links span {
    color: #8e9b9f;
    font-size: 13px;
    text-decoration: none;
    transition: color 0.2s;
}

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

.footer-links .sep {
    margin: 0 8px;
    color: #556;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-content {
        padding: 10px 0;
    }

    .main-nav {
        display: none;
    }

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

    .hero-content h1 {
        font-size: 32px;
    }

    .hero-content {
        padding: 20px;
    }

    .about-content {
        flex-direction: column;
    }

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

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

/* 动画 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 类别筛选 */
.category-filter {
    background-color: #f8f9fa;
    padding: 20px 0;
    margin-bottom: 40px;
}

.filter-tabs {
    display: flex;
    gap: 15px;
    justify-content: center;
    flex-wrap: wrap;
}

.tab-btn {
    padding: 8px 20px;
    border: 2px solid #dee2e6;
    background-color: #fff;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn:hover {
    border-color: #007bff;
    color: #007bff;
}

.tab-btn.active {
    background-color: #007bff;
    border-color: #007bff;
    color: #fff;
}

/* 文本居中 */
.text-center {
    text-align: center;
}

/* 无数据状态 */
.no-products,
.no-solutions,
.no-news {
    text-align: center;
    padding: 60px 0;
    color: #666;
    font-size: 18px;
}

/* =========================================
   新增样式 - 2026-01-14 优化
   ========================================= */

/* 快速导航 (Quick Navigation) */
.quick-nav {
    background-color: #fff;
    padding: 40px 0;
    margin-top: -40px;
    /* Overlap effect if desired, or just close to hero */
    position: relative;
    z-index: 10;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.quick-nav-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.quick-nav-item {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-decoration: none;
    display: block;
}

.quick-nav-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    background: #e9ecef;
}

.quick-nav-item h3 {
    color: #333;
    font-size: 18px;
    margin-bottom: 5px;
}

.quick-nav-item p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

/* 订阅模块 (Newsletter Subscription) */
.subscription-section {
    background-color: #f0f4f8;
    padding: 60px 0;
    text-align: center;
}

.subscription-content {
    max-width: 600px;
    margin: 0 auto;
}

.subscription-form {
    margin-top: 30px;
    display: flex;
    gap: 10px;
    justify-content: center;
}

.subscription-form input[type="email"] {
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
    flex: 1;
    font-size: 16px;
}

.subscription-form button {
    padding: 12px 25px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 500;
    transition: background-color 0.3s;
}

.subscription-form button:hover {
    background-color: #0056b3;
}

/* 行动号召 (Call to Action - CTA) */
.cta-section {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    padding: 80px 0;
    text-align: center;
}

.cta-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    color: white;
}

.cta-content p {
    font-size: 20px;
    margin-bottom: 30px;
    opacity: 0.9;
}

.btn-light {
    background-color: white;
    color: #007bff;
    padding: 15px 40px;
    font-size: 18px;
    border-radius: 30px;
    font-weight: bold;
    display: inline-block;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-light:hover {
    transform: scale(1.05);
    /* Slightly enlarge */
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
    text-decoration: none;
}

/* Footer 更新 */
.footer-qrcode {
    background: #fff;
    padding: 10px;
    border-radius: 4px;
    display: inline-block;
}

.footer-qrcode img {
    width: 120px;
    height: 120px;
    display: block;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .subscription-form {
        flex-direction: column;
    }

    .quick-nav {
        margin-top: 0;
    }

    .cta-content h2 {
        font-size: 28px;
    }
}

/* Contact Page Styles */.contact-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 40px;
}

@media (max-width: 768px) {
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

.contact-form-section,
.contact-info-section {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.contact-form .form-group {
    margin-bottom: 20px;
}

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.contact-form .required {
    color: #cc0000;
}

.contact-form input,
.contact-form textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-family: inherit;
}

.contact-form input:focus,
.contact-form textarea:focus {
    border-color: #007bff;
    outline: none;
}

.contact-info-section .contact-item {
    display: flex;
    margin-bottom: 20px;
    padding-bottom: 20px;
    border-bottom: 1px solid #eee;
}

.contact-info-section .contact-item:last-child {
    border-bottom: none;
}

.contact-info-section .icon {
    width: 40px;
    height: 40px;
    background: #f0f4f8;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 15px;
    color: #007bff;
}

.contact-info-section h3 {
    font-size: 16px;
    margin-bottom: 5px;
    color: #333;
}

.contact-info-section p {
    color: #666;
    margin-bottom: 0;
    line-height: 1.5;
}

.map-section {
    margin-top: 40px;
}

.map-container {
    height: 400px;
    background: #eee;
    position: relative;
    border-radius: 8px;
    overflow: hidden;
}

.map-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.map-placeholder .map-bg {
    position: absolute;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.5;
}

.map-placeholder .map-content {
    background: rgba(255, 255, 255, 0.9);
    padding: 20px;
    border-radius: 8px;
    text-align: center;
    z-index: 1;
    max-width: 300px;
}

/* Product Center Styles */
.pagination {
    display: flex;
    justify-content: center;
    margin-top: 40px;
    gap: 10px;
}

.pagination .page-link {
    display: inline-block;
    padding: 8px 16px;
    background: #fff;
    border: 1px solid #ddd;
    color: #333;
    text-decoration: none;
    border-radius: 4px;
    transition: all 0.3s;
}

.pagination .page-link:hover,
.pagination .page-link.active {
    background: #007bff;
    color: #fff;
    border-color: #007bff;
}

.product-detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.product-detail-main {
    min-width: 0;
}

.product-detail-sidebar {
    position: sticky;
    top: 24px;
}

.solution-detail-layout {
    display: grid;
    grid-template-columns: 1fr 320px;
    gap: 48px;
    align-items: start;
}

.solution-detail-main {
    min-width: 0;
}

.solution-detail-sidebar {
    position: sticky;
    top: 24px;
}

.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

/* 产品图集 */
.product-gallery {
    min-width: 0;
}

.product-gallery .main-image {
    position: relative;
    aspect-ratio: 4 / 3;
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface-soft);
    margin-bottom: 12px;
}

.product-gallery .main-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.thumbnails {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    scrollbar-width: none;
    -webkit-mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent 100%);
    mask-image: linear-gradient(to right, #000 calc(100% - 32px), transparent 100%);
    padding-bottom: 4px;
}

.thumbnails::-webkit-scrollbar { display: none; }

.thumbnails .thumb {
    width: 64px;
    height: 48px;
    object-fit: cover;
    border-radius: 5px;
    border: 2px solid var(--line);
    cursor: pointer;
    flex-shrink: 0;
    transition: border-color 180ms ease, opacity 180ms ease, transform 150ms ease;
    opacity: 0.6;
}

.thumbnails .thumb:hover {
    opacity: 0.9;
    transform: translateY(-2px);
}

.thumbnails .thumb.active {
    border-color: var(--brand);
    opacity: 1;
    box-shadow: 0 0 0 2px rgba(22, 155, 150, 0.2);
}

@media (max-width: 768px) {
    .product-detail-content {
        grid-template-columns: 1fr;
    }

    .product-gallery .main-image {
        aspect-ratio: 16 / 10;
    }

    .thumbnails .thumb {
        width: 56px;
        height: 42px;
    }
}

.product-tabs-wrapper {
    margin-top: 40px;
}

.tabs-header {
    border-bottom: 2px solid var(--line);
    margin-bottom: 30px;
    display: flex;
    gap: 4px;
}

.tabs-header .tab-btn {
    background: var(--surface-soft);
    border: 2px solid var(--line);
    border-bottom: none;
    padding: 10px 24px;
    font-size: 14px;
    font-weight: 600;
    color: var(--muted);
    cursor: pointer;
    font-family: inherit;
    border-radius: 8px 8px 0 0;
    margin-bottom: -2px;
    transition: color 200ms ease, background 200ms ease, border-color 200ms ease;
}

.tabs-header .tab-btn:hover {
    color: var(--text);
    background: var(--surface);
}

.tabs-header .tab-btn.active {
    color: var(--brand);
    background: #fff;
    border-color: var(--line) var(--line) #fff;
}

.tab-pane {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-pane.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.product-features ul {
    list-style: disc;
    padding-left: 20px;
}

.product-features li {
    margin-bottom: 10px;
    color: #666;
}

/* 富文本内容通用表格 */
.tab-pane table,
.content-section table,
.content-body table,
.description-content table,
.specifications-content table,
.solution-overview table {
    width: 100%;
    margin: 20px 0;
    border-collapse: collapse;
    font-size: 15px;
}

.tab-pane th,
.tab-pane td,
.content-section th,
.content-section td,
.content-body th,
.content-body td,
.description-content th,
.description-content td,
.specifications-content th,
.specifications-content td,
.solution-overview th,
.solution-overview td {
    padding: 10px 14px;
    border: 1px solid var(--line);
    text-align: left;
}

.tab-pane th,
.content-section th,
.content-body th,
.description-content th,
.specifications-content th,
.solution-overview th {
    background: var(--surface-soft);
    font-weight: 650;
    color: var(--ink);
}

/* Solution Center Styles */
.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.solution-card {
    background: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s;
    display: flex;
    flex-direction: column;
}

.solution-card:hover {
    transform: translateY(-5px);
}

.solution-image {
    height: 220px;
    overflow: hidden;
}

.solution-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.3s;
}

.solution-card:hover .solution-image img {
    transform: scale(1.05);
}

.solution-content {
    padding: 25px;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.solution-content h3 {
    font-size: 20px;
    margin-bottom: 15px;
    color: #333;
}

.solution-content p {
    color: #666;
    margin-bottom: 20px;
    flex-grow: 1;
    line-height: 1.6;
}

.solution-features {
    background: #f8f9fa;
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.solution-features h4 {
    font-size: 14px;
    color: #555;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.solution-features ul {
    list-style: disk;
    padding-left: 20px;
    margin: 0;
}

.solution-features li {
    font-size: 14px;
    color: #777;
    margin-bottom: 5px;
}

/* Solution Detail Styles */
.solution-hero {
    margin-bottom: 40px;
    border-radius: 8px;
    overflow: hidden;
}

.solution-hero img {
    width: 100%;
    max-height: 500px;
    object-fit: cover;
}

.solution-overview {
    margin-bottom: 60px;
}

.overview-content h2 {
    font-size: 28px;
    margin-bottom: 20px;
    text-align: center;
}

.overview-content>p {
    font-size: 18px;
    line-height: 1.8;
    color: #555;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 40px;
}

.key-features {
    margin-top: 50px;
}

.key-features h3 {
    text-align: center;
    margin-bottom: 30px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.feature-item {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: center;
    gap: 15px;
}

.feature-icon {
    width: 32px;
    height: 32px;
    background: #e6f2ff;
    color: #007bff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.feature-text {
    font-size: 16px;
    font-weight: 500;
    color: #333;
}

.case-studies {
    background: #f8f9fa;
    padding: 60px 0;
    margin: 60px 0;
}

.case-studies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.case-study-card {
    background: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
}

.case-study-card h3 {
    color: #007bff;
    margin-bottom: 15px;
}

.case-result {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px dashed #eee;
}

.case-result h4 {
    font-size: 14px;
    color: #999;
    margin-bottom: 5px;
}

.case-result p {
    font-weight: bold;
    color: #28a745;
    margin: 0;
}

.contact-consultation {
    text-align: center;
    padding: 40px 0;
    background: #e6f2ff;
    border-radius: 8px;
}

.consultation-content h2 {
    margin-bottom: 15px;
}

.consultation-content p {
    margin-bottom: 30px;
    color: #666;
}

/* Unified public-site design system.
 * ponytail: compatibility override for legacy templates; consolidate the
 * earlier duplicate selectors once every tenant is on the current markup.
 */
:root {
    --brand: #169b96;
    --brand-dark: #0f7471;
    --brand-soft: #eaf7f5;
    --ink: #172321;
    --muted: #66716f;
    --surface: #ffffff;
    --surface-soft: #f4f7f6;
    --line: #dfe7e5;
    --warm-accent: #c95c4b;
    --warm-cream: #faf8f4;
    --warm-sand: #f2ede5;
    --warm-clay: #c95c4b;
    --warm-amber: #e8a87c;
    --warm-ink: #2d2420;
    --warm-muted: #8b7f78;
    --page-width: 1180px;
    --reading-width: 780px;
    --radius: 8px;
    --header-height: 72px;
}

html { scroll-behavior: smooth; }

body {
    background: var(--surface);
    color: var(--ink);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Microsoft YaHei", "PingFang SC", sans-serif;
    font-size: 16px;
    line-height: 1.7;
    letter-spacing: 0;
    -webkit-font-smoothing: antialiased;
}

body, button, input, textarea, select { font-family: inherit; }
img { display: block; max-width: 100%; }
a { color: var(--brand-dark); text-decoration: none; }
a:hover { text-decoration: none; }

.container {
    width: min(100% - 48px, var(--page-width));
    max-width: none;
    margin-inline: auto;
    padding: 0;
}

.header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 1px solid rgba(223, 231, 229, 0.9);
    box-shadow: none;
    backdrop-filter: blur(12px);
}

.header-content {
    min-height: var(--header-height);
    padding: 0;
    gap: 24px;
}

.logo a { display: flex; align-items: center; }
.logo img { width: auto; max-width: 190px; max-height: 46px; }
.logo-text { color: var(--ink); font-size: 18px; font-weight: 700; }

.main-nav ul { align-items: center; gap: 4px; }
.main-nav a {
    display: block;
    padding: 10px 12px;
    border-radius: 0;
    color: #35413f;
    font-size: 15px;
    font-weight: 500;
    line-height: 1.2;
    transition: color 180ms ease, background-color 180ms ease;
}

.main-nav a:hover,
.main-nav a.active { color: var(--brand-dark); background: var(--brand-soft); }

.mobile-menu-toggle {
    width: 44px;
    height: 44px;
    padding: 9px;
    border: 0;
    background: transparent;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle span {
    width: 24px;
    height: 2px;
    margin: 3px 0;
    background: var(--ink);
    transform-origin: center;
}

.mobile-menu-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.mobile-menu-toggle.active span:nth-child(2) { opacity: 0; }
.mobile-menu-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }

.main-content { min-height: calc(100vh - var(--header-height)); margin-top: 0; }

.page-header {
    position: relative;
    display: grid;
    min-height: 260px;
    padding: 64px 0;
    background: linear-gradient(135deg, var(--surface-soft) 0%, #edf4f3 40%, #f0f7f5 100%);
    text-align: center;
    place-items: center;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -60px;
    right: -80px;
    width: 280px;
    height: 280px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(22, 155, 150, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -40px;
    left: -60px;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(15, 116, 113, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.page-header .container { display: grid; justify-items: center; position: relative; z-index: 1; }
.page-header h1 {
    max-width: 980px;
    margin: 0;
    color: var(--ink);
    font-size: 42px;
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

.page-header h1::after {
    content: '';
    display: block;
    width: 48px;
    height: 3px;
    margin: 16px auto 0;
    border-radius: 2px;
    background: var(--brand);
}

.page-header p { max-width: 640px; margin: 14px auto 0; color: var(--muted); font-size: 17px; }
/* 面包屑条 */
.breadcrumb-bar {
    padding: 12px 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
    font-size: 13px;
    color: var(--muted);
}

.breadcrumb-bar .container {
    display: flex;
    align-items: center;
    gap: 6px;
    overflow: hidden;
    white-space: nowrap;
}

.breadcrumb-bar a {
    color: var(--muted);
    transition: color 180ms ease;
}

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

.breadcrumb-bar .sep {
    color: #c5cdca;
    user-select: none;
}

.section-header { display: block; margin-bottom: 40px; text-align: left; }
.section-header h2 { margin: 0; color: var(--ink); font-size: 34px; font-weight: 700; line-height: 1.25; }
.section-header p { max-width: 600px; margin: 10px 0 0; color: var(--muted); font-size: 16px; }

.btn, .cta-button, .card-btn {
    min-height: 46px;
    padding: 11px 20px;
    border: 1px solid transparent;
    border-radius: 6px;
    font-size: 15px;
    font-weight: 650;
    line-height: 1.4;
    transition: background-color 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.btn-primary, .cta-button, .card-btn-primary { background: var(--brand); color: #fff; }
.btn-primary:hover, .cta-button:hover, .card-btn-primary:hover {
    background: var(--brand-dark);
    color: #fff;
    transform: translateY(-1px);
}

.btn-secondary, .card-btn-outline { border-color: var(--line); background: var(--surface); color: var(--ink); }
.btn-secondary:hover, .card-btn-outline:hover {
    border-color: var(--brand);
    background: var(--brand-soft);
    color: var(--brand-dark);
}

.category-filter {
    padding: 20px 0;
    border-bottom: 1px solid var(--line);
    background: var(--surface);
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 6px;
    overflow-x: auto;
    scrollbar-width: none;
}

.filter-tabs::-webkit-scrollbar { display: none; }
.tab-btn {
    min-height: 38px;
    padding: 7px 18px;
    flex: 0 0 auto;
    border: 1px solid var(--line);
    border-radius: 20px;
    background: var(--surface);
    color: var(--muted);
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 220ms ease;
    font-family: inherit;
}

.tab-btn:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: var(--brand-soft);
}

.tab-btn.active {
    border-color: var(--brand);
    background: var(--brand);
    color: #fff;
}
.products-section, .news-section, .solutions-section { padding: 64px 0 88px; }

.product-grid, .products-grid, .solutions-grid, .related-products-grid, .related-news-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.product-card, .solution-card, .related-product-card, .related-news-item {
    min-width: 0;
    overflow: hidden;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--surface);
    box-shadow: none;
    transition: border-color 180ms ease, transform 180ms ease;
}

.product-card:hover, .solution-card:hover, .related-product-card:hover, .related-news-item:hover {
    border-color: #adc8c4;
    transform: translateY(-3px);
}

.product-image, .solution-image, .related-product-image, .related-news-image {
    height: auto;
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--surface-soft);
}

.product-image img, .solution-image img, .related-product-image img, .related-news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.product-card:hover .product-image img, .solution-card:hover .solution-image img { transform: scale(1.025); }
.product-info, .solution-content, .solution-info, .related-news-content { padding: 22px; }
.product-info h3, .solution-content h3, .solution-info h3 {
    margin: 0 0 10px;
    color: var(--ink);
    font-size: 19px;
    line-height: 1.35;
}

.product-info p, .solution-content p, .solution-info p {
    display: -webkit-box;
    min-height: 3.4em;
    margin: 0 0 18px;
    overflow: hidden;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.7;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.product-meta {
    display: flex;
    margin: 0 0 16px;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    color: var(--muted);
    font-size: 13px;
}

/* =========================================
   新闻列表
   ========================================= */
/* =========================================
   新闻列表 —— 杂志风格
   ========================================= */
.news-section {
    padding: 48px 0 88px;
    background: var(--surface-soft);
}

.news-list {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 24px;
}

.news-item {
    min-width: 0;
    border-radius: 10px;
    background: var(--surface);
    overflow: hidden;
    transition: transform 300ms ease, box-shadow 300ms ease;
    display: flex;
    flex-direction: column;
}

.news-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(23, 35, 33, 0.1);
}

/* 首条大卡片 — 跨2列 */
.news-item--hero {
    grid-column: span 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
}

.news-item--hero .news-image {
    min-height: 320px;
    height: 100%;
}

.news-item--hero .news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-item--hero .news-image::after {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(23, 35, 33, 0) 40%, rgba(23, 35, 33, 0.55) 100%);
    pointer-events: none;
}

.news-item--hero .news-category {
    top: auto;
    bottom: 16px;
    left: 16px;
    background: rgba(255, 255, 255, 0.9);
    color: var(--brand-dark);
}

.news-item--hero .news-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 32px 28px;
    background: var(--brand-soft);
}

.news-item--hero h2 { font-size: 22px; line-height: 1.4; }
.news-item--hero .news-summary { -webkit-line-clamp: 3; }

/* 纯文字卡片 */
.news-item--text {
    background: var(--brand-soft);
    justify-content: center;
    padding: 28px 24px;
    border-left: 3px solid var(--brand);
}

.news-item--text .news-image { display: none; }
.news-item--text .news-content { padding: 0; }
.news-item--text .news-date { color: var(--brand-dark); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: 0.06em; }

/* 图片区域 + 分类浮标 */
.news-image {
    position: relative;
    display: block;
    overflow: hidden;
    background: var(--surface-soft);
}

.news-image img {
    display: block;
    width: 100%;
    height: auto;
    aspect-ratio: 16 / 10;
    object-fit: cover;
    transition: transform 700ms ease;
}

.news-item:hover .news-image img {
    transform: scale(1.05);
}

.news-category {
    position: absolute;
    top: 12px;
    left: 12px;
    z-index: 1;
    padding: 4px 12px;
    border-radius: 3px;
    background: rgba(23, 35, 33, 0.72);
    backdrop-filter: blur(6px);
    color: #fff;
    font-size: 11px;
    font-weight: 700;
    line-height: 1.5;
    letter-spacing: 0.04em;
}

/* 内容区 */
.news-content {
    display: flex;
    flex-direction: column;
    flex: 1;
    padding: 20px 22px 22px;
}

.news-date {
    display: block;
    margin-bottom: 8px;
    color: var(--muted);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.03em;
}

.news-item h2 {
    margin: 0 0 10px;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.5;
}

.news-item h2 a {
    color: var(--ink);
    transition: color 200ms ease;
}

.news-item h2 a:hover {
    color: var(--brand-dark);
}

.news-summary {
    display: -webkit-box;
    margin: 0 0 16px;
    overflow: hidden;
    color: var(--muted);
    font-size: 14px;
    line-height: 1.75;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
}

.read-more {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    margin-top: auto;
    color: var(--brand-dark);
    font-size: 13px;
    font-weight: 650;
    transition: gap 200ms ease, color 200ms ease;
}

.read-more:hover {
    gap: 8px;
    color: var(--brand);
    text-decoration: none;
}

.no-news {
    grid-column: 1 / -1;
    text-align: center;
    padding: 80px 20px;
    color: var(--muted);
    font-size: 15px;
}

/* 分页 — 圆形 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 48px;
    gap: 6px;
}

.pagination .page-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--surface);
    border: 1px solid var(--line);
    color: var(--muted);
    font-size: 14px;
    font-weight: 600;
    transition: all 220ms ease;
    text-decoration: none;
}

.pagination .page-link:hover {
    border-color: var(--brand);
    color: var(--brand);
    background: var(--brand-soft);
}

.pagination .page-link.active {
    background: var(--brand);
    color: #fff;
    border-color: var(--brand);
}

.pagination .page-link--text {
    width: auto;
    height: auto;
    padding: 8px 16px;
    border-radius: 6px;
    border: 1px solid var(--line);
    font-size: 13px;
}

@media (max-width: 960px) {
    .news-list {
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: 20px;
    }

    .news-item--hero {
        grid-column: span 2;
        grid-template-columns: 1fr;
    }

    .news-item--hero .news-image { min-height: 220px; }
    .news-item--hero .news-content { padding: 24px 20px; }
    .news-item--hero h2 { font-size: 19px; }
}

@media (max-width: 640px) {
    .news-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .news-item--hero {
        grid-column: span 1;
        grid-template-columns: 1fr;
    }

    .news-item--hero .news-image { min-height: 200px; }

    .news-section {
        padding: 32px 0 56px;
    }
}

/* 新闻详情 */
.news-detail { padding: 64px 0 96px; }

.news-detail-layout {
    display: grid;
    grid-template-columns: 160px 1fr 240px;
    gap: 28px;
    align-items: start;
}

.news-detail-left {
    position: sticky;
    top: 24px;
}

.news-detail-main {
    min-width: 0;
}

.news-detail-sidebar {
    position: sticky;
    top: 24px;
}
.news-header { margin-bottom: 28px; }
.news-header .news-meta { margin-bottom: 8px; }
.news-header .news-category { font-size: 13px; }

.news-header .news-date,
.news-header .news-views {
    color: var(--muted);
}

.news-author { color: var(--muted); font-size: 14px; margin-top: 8px; }

.news-featured-image {
    margin: 0 0 40px;
    overflow: hidden;
    border-radius: var(--radius);
    background: var(--surface-soft);
}

.news-featured-image img { width: 100%; height: auto; max-height: 520px; object-fit: cover; }

.news-intro {
    margin-bottom: 36px;
    padding: 20px 24px;
    border-left: 3px solid var(--brand);
    border-radius: 0 var(--radius) var(--radius) 0;
    background: var(--brand-soft);
    color: #34423f;
    font-size: 16px;
    line-height: 1.8;
}

.news-content { color: #35413f; font-size: 17px; line-height: 1.9; }
.news-content h2, .news-content h3 { margin: 44px 0 18px; color: var(--ink); line-height: 1.35; }
.news-content p, .news-content ul, .news-content ol { margin: 0 0 22px; }
.news-content img {
    width: auto;
    max-width: 100%;
    height: auto;
    margin: 28px auto;
    border-radius: var(--radius);
}

.news-content table {
    width: 100%;
    margin: 20px 0;
    border-collapse: collapse;
    font-size: 15px;
}

.news-content th,
.news-content td {
    padding: 10px 14px;
    border: 1px solid var(--line);
    text-align: left;
}

.news-content th {
    background: var(--surface-soft);
    font-weight: 650;
    color: var(--ink);
}

/* 标签 */
.news-tags {
    display: flex;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    font-size: 14px;
    color: var(--muted);
}

.tag {
    display: inline-block;
    padding: 4px 12px;
    border-radius: 4px;
    background: var(--surface-soft);
    color: var(--muted);
    font-size: 13px;
    transition: background-color 180ms ease, color 180ms ease;
}

.tag:hover {
    background: var(--brand-soft);
    color: var(--brand-dark);
}

/* 分享 */
.news-share {
    display: flex;
    margin-top: 48px;
    padding-top: 24px;
    border-top: 1px solid var(--line);
    align-items: center;
    gap: 16px;
}

.news-share h3 {
    margin: 0;
    font-size: 15px;
    font-weight: 650;
    color: var(--ink);
    flex-shrink: 0;
}

.share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.share-btn {
    display: inline-flex;
    padding: 7px 14px;
    border: 1px solid var(--line);
    border-radius: 6px;
    align-items: center;
    gap: 4px;
    color: var(--muted);
    font-size: 13px;
    font-weight: 500;
    transition: border-color 180ms ease, background-color 180ms ease, color 180ms ease;
}

.share-btn:hover {
    border-color: var(--brand);
    background: var(--brand-soft);
    color: var(--brand-dark);
}

/* 微信分享弹窗 */
.wechat-modal {
    display: flex;
    position: fixed;
    inset: 0;
    z-index: 9999;
    background: rgba(0, 0, 0, 0.5);
    align-items: center;
    justify-content: center;
    animation: fadeIn 200ms ease;
}

.wechat-modal-inner {
    width: 320px;
    padding: 32px 28px 24px;
    border-radius: 12px;
    background: var(--surface);
    text-align: center;
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.2);
}

.wechat-modal-inner h3 {
    margin: 0 0 16px;
    font-size: 17px;
    font-weight: 700;
    color: var(--ink);
}

.wechat-modal-inner img {
    display: block;
    width: 180px;
    height: 180px;
    margin: 0 auto 16px;
    border: 1px solid var(--line);
    border-radius: 8px;
}

.wechat-modal-inner p {
    margin: 0 0 20px;
    font-size: 13px;
    color: var(--muted);
    line-height: 1.6;
}

.wechat-modal-close {
    padding: 8px 24px;
    border: 1px solid var(--line);
    border-radius: 6px;
    background: var(--surface);
    color: var(--ink);
    font-size: 14px;
    font-family: inherit;
    cursor: pointer;
    transition: border-color 180ms ease, background 180ms ease;
}

.wechat-modal-close:hover {
    border-color: var(--brand);
    background: var(--brand-soft);
}

/* 复制成功提示 */
.copy-toast {
    position: fixed;
    bottom: 40px;
    left: 50%;
    z-index: 9999;
    padding: 10px 28px;
    border-radius: 20px;
    background: rgba(23, 35, 33, 0.85);
    color: #fff;
    font-size: 14px;
    transform: translateX(-50%);
    animation: fadeIn 200ms ease;
}

/* 新闻详情 - 交叉推荐（课程/方案） */
.news-cross-recommend {
    padding: 64px 0 80px;
    background: var(--surface-soft);
    border-top: 1px solid var(--line);
}

.cross-recommend-group {
    margin-bottom: 48px;
}

.cross-recommend-group:last-child {
    margin-bottom: 0;
}

.cross-recommend-title {
    display: flex;
    align-items: baseline;
    justify-content: space-between;
    margin: 0 0 24px;
}

.cross-recommend-title span {
    font-size: 22px;
    font-weight: 700;
    color: var(--ink);
}

.cross-recommend-more {
    font-size: 13px;
    font-weight: 600;
    color: var(--muted);
    transition: color 180ms ease;
}

.cross-recommend-more:hover {
    color: var(--brand);
}

.cross-recommend-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 20px;
}

.cross-recommend-card {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 180ms ease, transform 180ms ease;
}

.cross-recommend-card:hover {
    border-color: var(--brand);
    transform: translateY(-3px);
}

.cross-recommend-thumb {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--surface-soft);
}

.cross-recommend-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

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

.cross-recommend-text {
    padding: 16px 18px;
}

.cross-recommend-text h4 {
    margin: 0;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.45;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cross-recommend-text p {
    margin: 6px 0 0;
    font-size: 12px;
    line-height: 1.5;
    color: var(--muted);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.cross-recommend-price {
    display: inline-block;
    margin-top: 8px;
    color: var(--brand);
    font-size: 15px;
    font-weight: 700;
}

@media (max-width: 960px) {
    .cross-recommend-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media (max-width: 640px) {
    .news-cross-recommend {
        padding: 40px 0 56px;
    }

    .cross-recommend-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .cross-recommend-title span {
        font-size: 19px;
    }
}

/* 相关新闻 */
/* 侧边栏相关推荐 - 紧凑横排 */
.related-news { margin-top: 0; padding-top: 0; border-top: none; }
.related-news h3 { margin: 0 0 16px; font-size: 16px; font-weight: 700; color: var(--ink); }

.related-news-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.related-news-card {
    display: flex;
    gap: 10px;
    align-items: center;
    padding: 8px;
    border: 1px solid var(--line);
    border-radius: 6px;
    overflow: hidden;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 180ms ease, transform 180ms ease;
}

.related-news-card:hover {
    border-color: var(--brand);
    transform: translateY(-1px);
}

.related-news-thumb {
    width: 64px;
    height: 48px;
    border-radius: 4px;
    overflow: hidden;
    background: var(--surface-soft);
    flex-shrink: 0;
}

.related-news-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.related-news-card:hover .related-news-thumb img {
    transform: scale(1.08);
}

.related-news-text {
    padding: 0;
    min-width: 0;
}

.related-news-text h4 {
    margin: 0 0 3px;
    font-size: 13px;
    font-weight: 650;
    line-height: 1.4;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-news-date { color: var(--muted); font-size: 11px; }

/* 新闻详情 - 左侧推荐 */
.left-recommend-group {
    margin-bottom: 28px;
}

.left-recommend-group:last-child {
    margin-bottom: 0;
}

.left-recommend-group h3 {
    margin: 0 0 12px;
    font-size: 15px;
    font-weight: 700;
    color: var(--ink);
}

.left-recommend-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.left-recommend-card {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 180ms ease, transform 180ms ease;
}

.left-recommend-card:hover {
    border-color: var(--brand);
    transform: translateY(-1px);
}

.left-recommend-thumb {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--surface-soft);
}

.left-recommend-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

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

.left-recommend-text {
    padding: 10px 12px;
}

.left-recommend-text h4 {
    margin: 0;
    font-size: 12px;
    font-weight: 650;
    line-height: 1.4;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.left-recommend-price {
    display: inline-block;
    margin-top: 4px;
    font-size: 13px;
    font-weight: 700;
    color: var(--brand);
}

@media (max-width: 1024px) {
    .news-detail-layout {
        grid-template-columns: 1fr 280px;
    }

    .news-detail-left {
        display: none;
    }
}

/* 侧边栏相关产品 */
.product-detail-sidebar .related-products {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.product-detail-sidebar .related-products h3 {
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
}

.related-products-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.product-detail-sidebar .related-product-card {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 180ms ease, transform 180ms ease;
    box-shadow: none;
}

.product-detail-sidebar .related-product-card:hover {
    border-color: var(--brand);
    transform: translateY(-2px);
}

.related-product-thumb {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--surface-soft);
}

.related-product-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

.product-detail-sidebar .related-product-card:hover .related-product-thumb img {
    transform: scale(1.04);
}

.related-product-text {
    padding: 14px 16px;
}

.related-product-text h4 {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.45;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-product-price {
    color: var(--brand);
    font-size: 14px;
    font-weight: 700;
}

/* 侧边栏相关方案 */
.solution-detail-sidebar .related-solutions {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
}

.solution-detail-sidebar .related-solutions h3 {
    margin: 0 0 20px;
    font-size: 18px;
    font-weight: 700;
    color: var(--ink);
}

.related-solutions-list {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.related-solution-card {
    display: block;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    overflow: hidden;
    background: var(--surface);
    text-decoration: none;
    transition: border-color 180ms ease, transform 180ms ease;
}

.related-solution-card:hover {
    border-color: var(--brand);
    transform: translateY(-2px);
}

.related-solution-thumb {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--surface-soft);
}

.related-solution-thumb img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 300ms ease;
}

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

.related-solution-text {
    padding: 14px 16px;
}

.related-solution-text h4 {
    margin: 0 0 6px;
    font-size: 14px;
    font-weight: 650;
    line-height: 1.45;
    color: var(--ink);
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.related-solution-text p {
    color: var(--muted);
    font-size: 12px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
    margin: 0;
}

.news-detail .pagination { margin-top: 56px; }

.footer { padding: 64px 0 24px; background: #172321; color: #d6dfdd; }
.footer-content { grid-template-columns: 1.5fr 0.8fr 1fr 0.7fr; gap: 48px; }
.footer-section h3 { margin-bottom: 18px; color: #fff; font-size: 15px; }
.footer-section p, .footer-section a { color: #b9c6c3; font-size: 14px; }
.footer-section a:hover { color: #fff; }
.footer-bottom { margin-top: 48px; padding-top: 22px; border-color: #30403d; }

@media (max-width: 960px) {
    .main-nav ul { gap: 0; }
    .main-nav a { padding-inline: 8px; font-size: 14px; }
    .product-grid, .products-grid, .solutions-grid, .related-products-grid, .related-news-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .footer-content { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 768px) {
    :root { --header-height: 64px; }
    .container { width: min(100% - 32px, var(--page-width)); }
    .header-content { min-height: var(--header-height); }
    .logo img { max-width: 155px; max-height: 40px; }
    .mobile-menu-toggle { display: flex; flex-direction: column; flex-shrink: 0; }
    .main-nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        padding: 10px 16px 18px;
        border-top: 1px solid var(--line);
        border-bottom: 1px solid var(--line);
        background: var(--surface);
        box-shadow: 0 16px 30px rgba(23, 35, 33, 0.08);
    }

    .main-nav.active { display: block; animation: menuReveal 180ms ease-out; }
    .main-nav ul { display: grid; gap: 2px; }
    .main-nav a { padding: 12px; font-size: 16px; }
    .page-header { min-height: 200px; padding: 42px 0; }
    .page-header h1 { font-size: 30px; }
    .page-header p { font-size: 15px; }
    .section-header { margin-bottom: 28px; }
    .section-header h2 { font-size: 28px; }
    .products-section, .news-section, .solutions-section,
    .news-detail, .product-detail, .solution-detail { padding: 48px 0 72px; }
    .product-grid, .products-grid, .solutions-grid, .related-products-grid, .related-news-grid, .news-list {
        grid-template-columns: 1fr;
        gap: 28px;
    }
    .news-content { font-size: 16px; }
    .news-detail-layout { grid-template-columns: 1fr; gap: 36px; }
    .news-detail-left { display: none; }
    .news-detail-sidebar { position: static; }
    .product-detail-layout { grid-template-columns: 1fr; gap: 36px; }
    .product-detail-sidebar { position: static; }
    .solution-detail-layout { grid-template-columns: 1fr; gap: 36px; }
    .solution-detail-sidebar { position: static; }
    .footer { padding-top: 48px; }
    .footer-content { grid-template-columns: 1fr; gap: 32px; }
}

/* =========================================
   详情页上下篇导航
   ========================================= */
.detail-nav {
    padding: 48px 0 64px;
    border-top: 1px solid var(--line);
}

/* 返回列表 */
.detail-nav-back {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 24px;
    padding: 8px 0;
    color: var(--muted);
    text-decoration: none;
    font-size: 14px;
    transition: color 200ms ease;
}

.detail-nav-back:hover {
    color: var(--brand);
}

/* 上下篇卡片容器 */
.detail-nav-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.detail-nav-card {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 28px;
    border-radius: 10px;
    background: var(--surface);
    border: 1px solid var(--line);
    text-decoration: none;
    transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease;
}

.detail-nav-card:hover {
    border-color: var(--brand);
    box-shadow: 0 4px 20px rgba(23, 35, 33, 0.08);
    transform: translateY(-1px);
}

.detail-nav-card.is-disabled {
    opacity: 0.35;
    cursor: default;
    pointer-events: none;
}

.detail-nav-next {
    text-align: right;
    justify-content: flex-end;
}

.detail-nav-arrow {
    font-size: 20px;
    color: var(--brand);
    flex-shrink: 0;
    transition: transform 200ms ease;
}

.detail-nav-prev:hover .detail-nav-arrow {
    transform: translateX(-4px);
}

.detail-nav-next:hover .detail-nav-arrow {
    transform: translateX(4px);
}

.detail-nav-body {
    min-width: 0;
}

.detail-nav-label {
    display: block;
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.05em;
    margin-bottom: 6px;
}

.detail-nav-title {
    display: block;
    font-size: 15px;
    font-weight: 600;
    color: var(--text);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 360px;
}

@media (max-width: 768px) {
    .detail-nav {
        padding: 36px 0 48px;
    }

    .detail-nav-cards {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .detail-nav-card {
        padding: 18px 20px;
    }

    .detail-nav-next {
        text-align: left;
        justify-content: flex-start;
    }

    .detail-nav-title {
        max-width: none;
    }
}

@keyframes menuReveal {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* 关于我们 - 核心优势 */
.advantages-section {
    position: relative;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.advantage-card {
    position: relative;
    padding: 40px 32px 36px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.advantage-card:hover {
    border-color: #c5ddd9;
    transform: translateY(-4px);
    box-shadow: 0 12px 32px rgba(23, 35, 33, 0.06);
}

.advantage-card h3 {
    margin: 0 0 16px;
    padding-bottom: 16px;
    border-bottom: 2px solid var(--brand-soft);
    color: var(--ink);
    font-size: 20px;
    font-weight: 700;
    line-height: 1.3;
}

.advantage-card p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
}

/* 企业文化 */
.culture-section {
    background: var(--surface-soft);
}

.culture-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 28px;
}

.culture-card {
    position: relative;
    padding: 36px 32px 32px;
    border-radius: var(--radius);
    background: var(--surface);
    border-top: 3px solid var(--brand);
    transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.culture-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 28px rgba(23, 35, 33, 0.05);
}

.culture-card h3 {
    margin: 0 0 14px;
    color: var(--brand-dark);
    font-size: 19px;
    font-weight: 700;
    line-height: 1.3;
}

.culture-card p {
    margin: 0;
    color: var(--muted);
    font-size: 15px;
    line-height: 1.75;
}

/* 团队网格 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 28px;
}

.team-card {
    text-align: center;
    padding: 28px 20px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    transition: transform 180ms ease;
}

.team-card:hover {
    transform: translateY(-3px);
}

.team-image {
    width: 120px;
    height: 120px;
    margin: 0 auto 16px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--surface-soft);
}

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

.team-card h3 {
    margin: 0 0 4px;
    color: var(--ink);
    font-size: 17px;
    font-weight: 650;
}

.team-card p {
    color: var(--muted);
    font-size: 14px;
    margin: 0;
}

/* 资质证书网格 */
.certificates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: 24px;
}

.certificate-card {
    padding: 20px;
    border-radius: var(--radius);
    background: var(--surface);
    border: 1px solid var(--line);
    text-align: center;
    transition: transform 180ms ease;
}

.certificate-card:hover {
    transform: translateY(-2px);
}

.certificate-card img {
    width: 100%;
    height: auto;
    margin-bottom: 12px;
    border-radius: 4px;
}

.certificate-card h4 {
    margin: 0 0 4px;
    color: var(--ink);
    font-size: 15px;
    font-weight: 650;
}

.certificate-card .cert-code {
    color: var(--muted);
    font-size: 13px;
    margin: 0;
}

@media (max-width: 768px) {
    .advantages-grid,
    .culture-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
    }
}