/* ============================================
   CSS重置和基础样式
============================================ */

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Robink, 'Microsoft YaHei', sans-serif;
    line-height: 1.6;
    color: var(--text-primary);
    background-color: #ffffff;
    overflow-x: hidden;
}

/* 容器 */
.container {
    width: 100%;
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 无障碍：跳过导航链接 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-color);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    z-index: 9999;
    transition: top 0.3s;
}

.skip-link:focus {
    top: 0;
}

/* ============================================
   顶部通知栏
============================================ */

.top-bar {
    background-color: var(--bg-dark);
    color: #ffffff;
    padding: 8px 0;
    font-size: 0.875rem;
}

.top-bar-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.contact-info {
    display: flex;
    gap: 24px;
    align-items: center;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 6px;
    color: #cbd5e1;
}

.contact-item svg {
    width: 16px;
    height: 16px;
}

.admin-link {
    color: #ffffff;
    text-decoration: none;
    padding: 4px 12px;
    border: 1px solid #475569;
    border-radius: var(--radius-sm);
    transition: all 0.3s;
}

.admin-link:hover {
    background-color: #334155;
}

/* ============================================
   主导航
============================================ */

.main-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    transition: all 0.3s;
}

.main-header.scrolled {
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
    height: 80px;
}

/* Logo */
.logo a {
    text-decoration: none;
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: auto;
    transition: transform 0.3s;
}

.logo img:hover {
    transform: scale(1.05);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

/* 导航菜单 */
.main-nav .nav-list {
    display: flex;
    list-style: none;
    gap: 32px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-primary);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color 0.3s;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s;
}

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

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
}

/* 头部操作按钮 */
.header-actions {
    display: flex;
    align-items: center;
    gap: 16px;
}

.search-toggle,
.menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    color: var(--text-primary);
    transition: color 0.3s;
}

.search-toggle:hover,
.menu-toggle:hover {
    color: var(--primary-color);
}

.search-toggle svg,
.menu-toggle svg {
    width: 24px;
    height: 24px;
}

.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
}

.menu-icon {
    width: 100%;
    height: 3px;
    background-color: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

/* ============================================
   搜索框
============================================ */

.search-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.search-overlay.active {
    display: flex;
}

.search-container {
    width: 90%;
    max-width: 600px;
    position: relative;
}

.search-form {
    display: flex;
    background: white;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.search-input {
    flex: 1;
    padding: 20px;
    border: none;
    font-size: 1.125rem;
    outline: none;
}

.search-submit {
    background: var(--primary-color);
    border: none;
    padding: 0 24px;
    color: white;
    cursor: pointer;
    transition: background 0.3s;
}

.search-submit:hover {
    background: #1d4ed8;
}

.search-submit svg {
    width: 24px;
    height: 24px;
}

.search-close {
    position: absolute;
    top: -60px;
    right: 0;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
    padding: 8px;
}

/* ============================================
   移动菜单
============================================ */

.mobile-menu {
    position: fixed;
    top: 0;
    right: -100%;
    width: 300px;
    height: 100vh;
    background: white;
    z-index: 1001;
    box-shadow: var(--shadow-lg);
    transition: right 0.3s;
    display: none;
}

.mobile-menu.active {
    right: 0;
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border-color);
}

.mobile-menu-close {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
    color: var(--text-primary);
}

.mobile-nav-list {
    list-style: none;
    padding: 20px;
}

.mobile-nav-link {
    display: block;
    padding: 12px 0;
    text-decoration: none;
    color: var(--text-primary);
    font-size: 1.125rem;
    border-bottom: 1px solid var(--border-color);
    transition: color 0.3s;
}

.mobile-nav-link:hover {
    color: var(--primary-color);
}

/* ============================================
   主横幅
============================================ */

.hero {
    position: relative;
    min-height: 600px;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    overflow: hidden;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.2;
}

.highlight {
    color: var(--accent-color);
    position: relative;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 3px;
    background-color: var(--accent-color);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-buttons {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* ============================================
   通用部分样式
============================================ */

.section {
    padding: 80px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--primary-color);
    margin: 16px auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.section-link {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.section-link:hover {
    transform: translateX(5px);
}

.section-link svg {
    margin-left: 8px;
    width: 16px;
    height: 16px;
}

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

/* ============================================
   特性网格
============================================ */

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.feature-card {
    background: white;
    padding: 40px 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    border: 1px solid var(--border-color);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.feature-icon svg {
    width: 32px;
    height: 32px;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.feature-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   新闻网格
============================================ */

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.news-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.news-image {
    height: 200px;
    overflow: hidden;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.news-content {
    padding: 32px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-meta {
    margin-bottom: 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.news-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.news-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

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

.news-excerpt {
    color: var(--text-secondary);
    margin-bottom: 24px;
    flex: 1;
    line-height: 1.7;
}

.news-link {
    display: inline-flex;
    align-items: center;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.news-link:hover {
    transform: translateX(5px);
}

.news-link svg {
    margin-left: 8px;
    width: 16px;
    height: 16px;
}

/* ============================================
   设备网格
============================================ */

.equipment-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 32px;
}

.equipment-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.equipment-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.equipment-image {
    height: 200px;
    overflow: hidden;
}

.equipment-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.equipment-content {
    padding: 24px;
}

.equipment-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.equipment-desc {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ============================================
   合作伙伴网格
============================================ */

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 40px;
    align-items: center;
}

.partner-logo {
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.partner-logo:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.partner-logo a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.partner-logo img {
    max-width: 100%;
    max-height: 40px;
    object-fit: contain;
}

.partner-logo span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* ============================================
   CTA区域
============================================ */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    text-align: center;
}

.cta-content {
    max-width: 800px;
    margin: 0 auto;
}

.cta-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 20px;
}

.cta-text {
    font-size: 1.25rem;
    margin-bottom: 40px;
    opacity: 0.9;
}

.cta-buttons {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.125rem;
}

/* ============================================
   按钮样式
============================================ */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.3s;
    gap: 8px;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #1d4ed8;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background-color: transparent;
    color: white;
    border: 2px solid white;
}

.btn-secondary:hover {
    background-color: white;
    color: var(--primary-color);
    transform: translateY(-2px);
}

.btn-secondary svg {
    width: 20px;
    height: 20px;
}

/* ============================================
   页脚
============================================ */

.site-footer {
    background-color: var(--bg-dark);
    color: #cbd5e1;
    padding-top: 60px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.footer-section {
    display: flex;
    flex-direction: column;
}

.footer-logo img {
    height: 45px;
    width: auto;
    margin-bottom: 20px;
}

.company-desc {
    margin-bottom: 24px;
    line-height: 1.7;
}

.social-links {
    display: flex;
    gap: 16px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: #334155;
    border-radius: 50%;
    color: white;
    transition: all 0.3s;
}

.social-link:hover {
    background: var(--primary-color);
    transform: translateY(-3px);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

.footer-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: white;
    margin-bottom: 24px;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: var(--primary-color);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: white;
    padding-left: 8px;
}

.contact-info {
    list-style: none;
}

.contact-info li {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 16px;
}

.contact-info svg {
    width: 20px;
    height: 20px;
    color: var(--primary-color);
    flex-shrink: 0;
    margin-top: 4px;
}

.contact-info span {
    line-height: 1.6;
}

/* 底部版权 */
.footer-bottom {
    padding: 30px 0;
    border-top: 1px solid #334155;
    text-align: center;
    font-size: 0.875rem;
}

.copyright,
.technical-info {
    margin-bottom: 12px;
}

.sep {
    margin: 0 12px;
    color: #64748b;
}

.footer-link {
    color: #cbd5e1;
    text-decoration: none;
    transition: color 0.3s;
}

.footer-link:hover {
    color: white;
}

/* ============================================
   返回顶部按钮
============================================ */

.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    z-index: 100;
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: center;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #1d4ed8;
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

/* ============================================
   动画
============================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
    }
    to {
        transform: translateX(0);
    }
}

/* ============================================
   响应式设计
============================================ */

/* 平板设备 */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .features-grid,
    .news-grid,
    .equipment-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 移动设备 */
@media (max-width: 768px) {
    .container {
        padding: 0 16px;
    }
    
    /* 隐藏桌面导航，显示移动菜单按钮 */
    .main-nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .mobile-menu {
        display: block;
    }
    
    /* 调整顶部栏 */
    .top-bar-content {
        flex-direction: column;
        gap: 12px;
        text-align: center;
    }
    
    .contact-info {
        flex-direction: column;
        gap: 8px;
    }
    
    /* 调整英雄区域 */
    .hero {
        min-height: 500px;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* 调整各部分间距 */
    .section {
        padding: 60px 0;
    }
    
    /* 调整网格布局 */
    .features-grid,
    .news-grid,
    .equipment-grid {
        grid-template-columns: 1fr;
        gap: 24px;
    }
    
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    /* 调整CTA按钮 */
    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    /* 调整页脚 */
    .footer-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .footer-bottom {
        text-align: center;
    }
    
    .sep {
        display: block;
        margin: 8px 0;
    }
}

/* 小屏幕设备 */
@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 1.75rem;
    }
    
    .btn {
        width: 100%;
    }
    
    .feature-card,
    .news-card,
    .equipment-card {
        padding: 24px;
    }
    
    .partner-logo {
        height: 60px;
        padding: 12px;
    }
}

/* 打印样式 */
@media print {
    .top-bar,
    .main-header,
    .site-footer,
    .back-to-top {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
    
    .hero {
        min-height: auto;
        background: none !important;
        color: black;
    }
    
    .section {
        padding: 20pt 0;
        page-break-inside: avoid;
    }
}

/* ============================================
   页面特定样式
============================================ */

/* 页面标题区域 */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: 60px 0;
}

.page-header-content {
    text-align: center;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 16px;
}

.breadcrumb {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    font-size: 0.875rem;
}

.breadcrumb a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
}

.breadcrumb a:hover {
    color: white;
}

.breadcrumb .separator {
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb .current {
    color: white;
    font-weight: 500;
}

/* 关于我们页面 */
.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.about-text .section-title {
    text-align: left;
}

.about-text .section-title::after {
    margin-left: 0;
}

.about-desc {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-secondary);
}

.about-desc p {
    margin-bottom: 20px;
}

.about-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.about-image img {
    width: 100%;
    height: auto;
    transition: transform 0.5s;
}

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

/* 统计数据 */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    text-align: center;
}

.stat-item {
    padding: 30px;
}

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-family: 'Arial', sans-serif;
}

.stat-label {
    font-size: 1.125rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* 公司文化 */
.culture-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.culture-card {
    text-align: center;
    padding: 40px 30px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
}

.culture-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.culture-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 24px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.culture-icon svg {
    width: 36px;
    height: 36px;
}

.culture-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.culture-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* 时间线 */
.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 30px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--primary-color);
}

.timeline-item {
    position: relative;
    padding-left: 80px;
    margin-bottom: 40px;
}

.timeline-year {
    position: absolute;
    left: 0;
    top: 0;
    width: 60px;
    height: 60px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
}

.timeline-content {
    background: white;
    padding: 24px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.timeline-content h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
}

/* 团队介绍 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
}

.team-member {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.member-photo {
    height: 300px;
    overflow: hidden;
}

.member-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.team-member:hover .member-photo img {
    transform: scale(1.05);
}

.member-info {
    padding: 24px;
    text-align: center;
}

.member-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.member-position {
    color: var(--primary-color);
    font-weight: 500;
    margin-bottom: 12px;
}

.member-desc {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* 新闻列表 */
.news-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.news-list-item {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-list-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.news-list-image {
    height: 200px;
    overflow: hidden;
}

.news-list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.news-list-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-list-meta {
    display: flex;
    gap: 16px;
    margin-bottom: 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.news-list-meta span {
    display: flex;
    align-items: center;
    gap: 4px;
}

.news-list-meta svg {
    width: 14px;
    height: 14px;
}

.news-list-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
}

.news-list-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.news-list-title a:hover {
    color: var(--primary-color);
}

.news-list-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
    flex: 1;
}

.news-read-more {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.news-read-more:hover {
    transform: translateX(5px);
}

.news-read-more svg {
    width: 16px;
    height: 16px;
}

/* 分页 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 60px;
}

.page-prev,
.page-next {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.page-prev:hover,
.page-next:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.page-prev svg,
.page-next svg {
    width: 16px;
    height: 16px;
}

.page-numbers {
    display: flex;
    gap: 8px;
}

.page-numbers a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
}

.page-numbers a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.page-numbers a.active {
    background: var(--primary-color);
    color: white;
}

/* 新闻详情 */
.news-detail {
    max-width: 800px;
    margin: 0 auto;
}

.news-detail-header {
    margin-bottom: 40px;
}

.news-detail-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--text-primary);
    line-height: 1.3;
}

.news-detail-meta {
    display: flex;
    gap: 24px;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

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

.meta-item svg {
    width: 16px;
    height: 16px;
}

.news-detail-image {
    margin-bottom: 40px;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.news-detail-image img {
    width: 100%;
    height: auto;
    max-height: 500px;
    object-fit: cover;
}

.news-detail-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: 40px;
}

.news-detail-content p {
    margin-bottom: 24px;
}

.news-detail-content h2,
.news-detail-content h3,
.news-detail-content h4 {
    margin: 32px 0 16px;
    color: var(--text-primary);
}

.news-detail-content h2 {
    font-size: 1.5rem;
}

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

.news-detail-content ul,
.news-detail-content ol {
    margin-bottom: 24px;
    padding-left: 24px;
}

.news-detail-content li {
    margin-bottom: 8px;
}

.news-share {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
}

.share-label {
    font-weight: 500;
    color: var(--text-primary);
}

.share-buttons {
    display: flex;
    gap: 12px;
}

.share-button {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    color: white;
    text-decoration: none;
    transition: transform 0.3s;
}

.share-button:hover {
    transform: translateY(-3px);
}

.share-button.wechat {
    background: #07C160;
}

.share-button.weibo {
    background: #E6162D;
}

.share-button.qq {
    background: #12B7F5;
}

.share-button svg {
    width: 20px;
    height: 20px;
}

.news-navigation {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin: 40px 0;
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

.news-nav {
    text-decoration: none;
    padding: 16px;
    border-radius: var(--radius-md);
    transition: all 0.3s;
}

.news-nav:hover {
    background: rgba(37, 99, 235, 0.05);
}

.news-nav.prev {
    text-align: left;
}

.news-nav.next {
    text-align: right;
}

.nav-label {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.nav-title {
    font-weight: 500;
    color: var(--text-primary);
    line-height: 1.4;
}

.related-news {
    margin-top: 40px;
}

.related-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.related-list {
    display: grid;
    gap: 12px;
}

.related-item {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 12px;
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: background 0.3s;
}

.related-item:hover {
    background: rgba(37, 99, 235, 0.05);
}

.related-date {
    font-size: 0.875rem;
    color: var(--primary-color);
    font-weight: 500;
    min-width: 40px;
}

.related-text {
    color: var(--text-primary);
    line-height: 1.5;
}

/* 设备列表 */
.equipment-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.equipment-list-item {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

.equipment-list-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.equipment-list-image {
    height: 200px;
    overflow: hidden;
    background: var(--bg-light);
}

.equipment-list-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

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

.equipment-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.equipment-placeholder svg {
    width: 64px;
    height: 64px;
}

.equipment-list-content {
    padding: 24px;
}

.equipment-category {
    display: inline-block;
    padding: 4px 12px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
    margin-bottom: 12px;
}

.equipment-list-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
    line-height: 1.4;
}

.equipment-list-desc {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.equipment-specs {
    margin-bottom: 20px;
}

.equipment-specs h4 {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 8px;
    font-weight: 500;
}

.spec-item {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    padding-left: 12px;
    position: relative;
}

.spec-item::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
}

/* 分类筛选 */
.category-filter {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.category-item {
    padding: 8px 20px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all 0.3s;
    font-size: 0.875rem;
}

.category-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.category-item.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* 模态框 */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    z-index: 2000;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal.active {
    display: flex;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    border-radius: var(--radius-lg);
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    position: relative;
    animation: slideInUp 0.3s ease;
}

@keyframes slideInUp {
    from {
        transform: translateY(50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    z-index: 1;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all 0.3s;
}

.modal-close:hover {
    background: rgba(0, 0, 0, 0.05);
    color: var(--text-primary);
}

.modal-body {
    padding: 40px;
}

/* 设备详情模态框 */
.equipment-detail-modal {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

.equipment-detail-image {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.equipment-detail-image img {
    width: 100%;
    height: auto;
    max-height: 400px;
    object-fit: cover;
}

.equipment-detail-name {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.equipment-detail-desc {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.equipment-detail-specs {
    margin-bottom: 32px;
}

.equipment-detail-specs h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.specs-content {
    display: grid;
    gap: 8px;
}

.equipment-detail-actions {
    display: flex;
    gap: 16px;
}

/* 下载页面 */
.downloads-list {
    display: grid;
    gap: 20px;
}

.download-item {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 24px;
    align-items: center;
    padding: 24px;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: transform 0.3s;
}

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

.download-icon {
    font-size: 2.5rem;
    width: 60px;
    height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-light);
    border-radius: var(--radius-md);
}

.download-info {
    min-width: 0; /* 防止内容溢出 */
}

.download-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    flex-wrap: wrap;
}

.download-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.download-category {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-radius: var(--radius-sm);
}

.download-desc {
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.6;
}

.download-meta {
    display: flex;
    gap: 24px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

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

.meta-item svg {
    width: 14px;
    height: 14px;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    white-space: nowrap;
}

.download-btn svg {
    width: 16px;
    height: 16px;
}

/* 合作伙伴列表 */
.partners-list-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.partner-list-item {
    background: white;
    border-radius: var(--radius-lg);
    padding: 30px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.partner-list-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.partner-logo-container {
    width: 180px;
    height: 120px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.partner-logo {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.partner-text-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
}

.partner-name {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.partner-name a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.partner-name a:hover {
    color: var(--primary-color);
}

.partner-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 0;
}

.cooperation-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, #1e40af 100%);
    color: white;
    padding: 60px;
    border-radius: var(--radius-lg);
    text-align: center;
}

.cooperation-cta .cta-title {
    font-size: 2rem;
    margin-bottom: 16px;
}

.cooperation-cta .cta-text {
    font-size: 1.125rem;
    margin-bottom: 32px;
    opacity: 0.9;
}

/* 联系页面 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
}

.contact-form-container {
    background: white;
    padding: 40px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.contact-form .section-title {
    text-align: left;
}

.contact-form .section-title::after {
    margin-left: 0;
}

.form-message {
    padding: 16px;
    border-radius: var(--radius-md);
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.form-message.success {
    background: rgba(34, 197, 94, 0.1);
    color: #15803d;
    border: 1px solid rgba(34, 197, 94, 0.2);
}

.form-message.error {
    background: rgba(239, 68, 68, 0.1);
    color: #b91c1c;
    border: 1px solid rgba(239, 68, 68, 0.2);
}

.form-message svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.contact-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.contact-form label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.contact-form label.required::after {
    content: '*';
    color: #ef4444;
    margin-left: 4px;
}

.contact-form input,
.contact-form select,
.contact-form textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    color: var(--text-primary);
    transition: all 0.3s;
}

.contact-form input:focus,
.contact-form select:focus,
.contact-form textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.contact-form input.error,
.contact-form select.error,
.contact-form textarea.error {
    border-color: #ef4444;
}

.contact-form .error-message {
    color: #ef4444;
    font-size: 0.875rem;
    margin-top: 4px;
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form .form-actions {
    margin-top: 32px;
}

.contact-card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.contact-header {
    padding: 40px 40px 0;
}

.contact-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.contact-subtitle {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.contact-items {
    padding: 0 40px 40px;
}

.contact-item {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 16px;
    margin-bottom: 24px;
    align-items: start;
}

.contact-icon {
    width: 40px;
    height: 40px;
    background: rgba(37, 99, 235, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.contact-icon svg {
    width: 20px;
    height: 20px;
}

.contact-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
}

.contact-content p {
    color: var(--text-secondary);
    line-height: 1.6;
    margin: 0;
}

.contact-map {
    height: 300px;
    background: var(--bg-light);
    position: relative;
}

.map-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

.map-placeholder svg {
    width: 48px;
    height: 48px;
    margin-bottom: 16px;
}

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

.faq-item {
    background: white;
    border-radius: var(--radius-lg);
    margin-bottom: 16px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.faq-question {
    padding: 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    transition: background 0.3s;
}

.faq-question:hover {
    background: rgba(37, 99, 235, 0.05);
}

.faq-question h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.faq-toggle {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s;
}

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

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
}

.faq-item.active .faq-answer {
    padding-bottom: 24px;
}

.faq-answer p {
    color: var(--text-secondary);
    line-height: 1.7;
    margin: 0;
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    font-size: 4rem;
    margin-bottom: 24px;
}

.empty-state h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

/* 响应式调整 */
@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .contact-grid {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .equipment-detail-modal {
        grid-template-columns: 1fr;
        gap: 30px;
    }
}

@media (max-width: 768px) {
    .page-title {
        font-size: 2rem;
    }
    
    .news-detail-title {
        font-size: 1.5rem;
    }
    
    .news-detail-meta {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .news-navigation {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .download-item {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .contact-form .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-year {
        width: 40px;
        height: 40px;
        font-size: 0.875rem;
    }
}

@media (max-width: 480px) {
    .section-title {
        font-size: 1.5rem;
    }
    
    .news-list-grid {
        grid-template-columns: 1fr;
    }
    
    .equipment-list-grid {
        grid-template-columns: 1fr;
    }
    
    .partners-list-grid {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        padding: 0;
    }
    
    .modal-body {
        padding: 20px;
    }
}
/* ============================================
   搜索页面样式
============================================ */

/* 搜索框区域 */
.search-box-section {
    padding: 40px 0;
    background: var(--bg-light);
}

.search-box {
    max-width: 800px;
    margin: 0 auto;
}

.search-form-inline {
    background: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.search-input-group {
    display: flex;
    margin-bottom: 24px;
}

.search-input-large {
    flex: 1;
    padding: 16px 24px;
    font-size: 1.125rem;
    border: 2px solid var(--border-color);
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    transition: all 0.3s;
}

.search-input-large:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.search-button-large {
    padding: 0 32px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
}

.search-button-large:hover {
    background: #1d4ed8;
}

.search-button-large svg {
    width: 20px;
    height: 20px;
}

/* 搜索筛选器 */
.search-filters {
    border-top: 1px solid var(--border-color);
    padding-top: 24px;
}

.filter-group {
    display: flex;
    align-items: center;
    gap: 20px;
    flex-wrap: wrap;
}

.filter-label {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
}

.filter-options {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.filter-option {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    user-select: none;
}

.filter-option input[type="radio"] {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
}

.filter-option span {
    color: var(--text-secondary);
    transition: color 0.3s;
}

.filter-option input[type="radio"]:checked + span {
    color: var(--primary-color);
    font-weight: 500;
}

/* 搜索结果头部 */
.search-results-header {
    margin-bottom: 40px;
    padding-bottom: 24px;
    border-bottom: 2px solid var(--border-color);
}

.results-title {
    font-size: 1.75rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.results-title .highlight {
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.1);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.results-meta {
    display: flex;
    align-items: center;
    gap: 16px;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.results-count strong {
    color: var(--primary-color);
    font-size: 1.125rem;
}

/* 搜索结果列表 */
.results-list {
    display: grid;
    gap: 24px;
}

.result-item {
    background: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    transition: all 0.3s;
}

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

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.result-type {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-type.news {
    background: rgba(59, 130, 246, 0.1);
    color: #2563eb;
}

.result-type.equipment {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
}

.result-type.downloads {
    background: rgba(245, 158, 11, 0.1);
    color: #d97706;
}

.result-date {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.result-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 16px;
    line-height: 1.4;
}

.result-link {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

.result-link:hover {
    color: var(--primary-color);
}

.result-title mark {
    background: #fef3c7;
    color: #92400e;
    padding: 1px 4px;
    border-radius: 2px;
}

.result-image {
    margin: 20px 0;
    border-radius: var(--radius-md);
    overflow: hidden;
}

.result-image img {
    width: 100%;
    height: auto;
    max-height: 200px;
    object-fit: cover;
}

.result-excerpt {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 20px;
}

.result-excerpt mark {
    background: #fef3c7;
    color: #92400e;
    padding: 1px 4px;
    border-radius: 2px;
    font-weight: 500;
}

.result-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.result-views,
.result-downloads {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.result-views svg,
.result-downloads svg {
    width: 16px;
    height: 16px;
}

.result-action {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.result-action:hover {
    transform: translateX(5px);
}

.result-action svg {
    width: 16px;
    height: 16px;
}

/* 空结果状态 */
.empty-results {
    text-align: center;
    padding: 60px 20px;
    max-width: 600px;
    margin: 0 auto;
}

.empty-results .empty-icon {
    font-size: 4rem;
    margin-bottom: 24px;
}

.empty-results h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.empty-results p {
    color: var(--text-secondary);
    margin-bottom: 20px;
}

.suggestions {
    text-align: left;
    max-width: 400px;
    margin: 0 auto 30px;
    padding-left: 20px;
    color: var(--text-secondary);
}

.suggestions li {
    margin-bottom: 8px;
}

.popular-searches {
    text-align: left;
    max-width: 400px;
    margin: 0 auto;
}

.popular-searches h4 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.popular-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.popular-tags .tag {
    display: inline-block;
    padding: 6px 16px;
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    text-decoration: none;
    border-radius: var(--radius-lg);
    font-size: 0.875rem;
    transition: all 0.3s;
}

.popular-tags .tag:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
}

/* 搜索分页 */
.search-pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin-top: 60px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

/* 搜索建议 */
.search-suggestions {
    padding: 60px 0;
}

.suggestions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.suggestion-card {
    background: white;
    padding: 30px;
    border-radius: var(--radius-lg);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 20px;
    transition: all 0.3s;
    box-shadow: var(--shadow-sm);
}

.suggestion-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.suggestion-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color) 0%, #1d4ed8 100%);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.suggestion-icon svg {
    width: 24px;
    height: 24px;
}

.suggestion-content {
    flex: 1;
}

.suggestion-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.suggestion-desc {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .search-input-group {
        flex-direction: column;
    }
    
    .search-input-large {
        border-radius: var(--radius-lg);
        border-right: 2px solid var(--border-color);
        margin-bottom: 12px;
    }
    
    .search-button-large {
        border-radius: var(--radius-lg);
        justify-content: center;
        padding: 16px;
    }
    
    .filter-group {
        flex-direction: column;
        align-items: stretch;
    }
    
    .filter-options {
        flex-wrap: wrap;
    }
    
    .result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .result-footer {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
    
    .suggestions-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .search-form-inline {
        padding: 20px;
    }
    
    .result-item {
        padding: 20px;
    }
    
    .results-title {
        font-size: 1.5rem;
    }
    
    .search-pagination {
        flex-direction: column;
        gap: 12px;
    }
}

/* ============================================
   4列视频网格样式
============================================ */

/* 4列视频网格容器 */
.videos-grid-4col {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

/* 4列视频卡片 */
.video-card-4col {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.video-card-4col:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
    border-color: var(--primary-color);
}

/* 4列视频缩略图 */
.video-thumbnail-4col {
    position: relative;
    height: 160px;
    overflow: hidden;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.video-thumbnail-4col img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card-4col:hover .video-thumbnail-4col img {
    transform: scale(1.05);
}

.video-thumbnail-placeholder-4col {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    color: rgba(255, 255, 255, 0.8);
}

/* 4列视频覆盖层 */
.video-overlay-4col {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.video-card-4col:hover .video-overlay-4col {
    opacity: 1;
}

.play-icon-4col {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transform: scale(0.9);
    transition: transform 0.3s ease;
}

.video-card-4col:hover .play-icon-4col {
    transform: scale(1);
}

.play-icon-4col svg {
    width: 20px;
    height: 20px;
    color: #374151;
    margin-left: 3px;
}

.video-duration-4col {
    position: absolute;
    bottom: 8px;
    right: 8px;
    background: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 11px;
    font-weight: 500;
}

/* 4列视频内容 */
.video-content-4col {
    padding: 15px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 4列视频元数据 */
.video-meta-4col {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    font-size: 12px;
}

.video-type-4col {
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 10px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.video-type-4col.youtube {
    background: rgba(255, 0, 0, 0.1);
    color: #ff0000;
    border: 1px solid rgba(255, 0, 0, 0.2);
}

.video-type-4col.vimeo {
    background: rgba(26, 183, 234, 0.1);
    color: #1ab7ea;
    border: 1px solid rgba(26, 183, 234, 0.2);
}

.video-type-4col.bilibili {
    background: rgba(0, 169, 224, 0.1);
    color: #00a9e0;
    border: 1px solid rgba(0, 169, 224, 0.2);
}

.video-type-4col.local {
    background: rgba(59, 130, 246, 0.1);
    color: #3b82f6;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

.video-type-4col.other {
    background: rgba(107, 114, 128, 0.1);
    color: #6b7280;
    border: 1px solid rgba(107, 114, 128, 0.2);
}

.video-views-4col {
    display: flex;
    align-items: center;
    gap: 3px;
    color: #9ca3af;
}

.video-views-4col svg {
    width: 12px;
    height: 12px;
}

/* 4列视频标题 */
.video-title-4col {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
    height: 40px;
    overflow: hidden;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.video-title-4col a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
}

.video-title-4col a:hover {
    color: var(--primary-color);
}

/* 4列视频描述（如果需要显示描述，但4列时通常省略） */
.video-desc-4col {
    display: none; /* 4列布局中通常不显示描述 */
}

/* 4列视频底部 */
.video-footer-4col {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 12px;
    border-top: 1px solid #f3f4f6;
    font-size: 11px;
    color: #9ca3af;
    margin-top: auto;
}

.video-date-4col {
    color: #6b7280;
}

.video-category-4col {
    background: rgba(37, 99, 235, 0.08);
    color: var(--primary-color);
    padding: 1px 6px;
    border-radius: 4px;
    font-size: 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60px;
}

/* ============================================
   响应式设计 - 4列视频网格
============================================ */

/* 桌面大屏 - 保持4列 */
@media (min-width: 1200px) {
    .videos-grid-4col {
        grid-template-columns: repeat(4, 1fr);
        gap: 20px;
    }
    
    .video-thumbnail-4col {
        height: 170px;
    }
}

/* 桌面中等屏幕 - 3列 */
@media (max-width: 1199px) and (min-width: 992px) {
    .videos-grid-4col {
        grid-template-columns: repeat(3, 1fr);
        gap: 18px;
    }
    
    .video-thumbnail-4col {
        height: 160px;
    }
}

/* 平板横屏 - 3列 */
@media (max-width: 991px) and (min-width: 768px) {
    .videos-grid-4col {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }
    
    .video-thumbnail-4col {
        height: 150px;
    }
    
    .video-title-4col {
        font-size: 13px;
        height: 36px;
    }
}

/* 平板竖屏 - 2列 */
@media (max-width: 767px) and (min-width: 576px) {
    .videos-grid-4col {
        grid-template-columns: repeat(2, 1fr);
        gap: 15px;
    }
    
    .video-thumbnail-4col {
        height: 140px;
    }
    
    .video-content-4col {
        padding: 12px;
    }
    
    .video-title-4col {
        font-size: 13px;
        height: 36px;
    }
    
    .video-footer-4col {
        font-size: 10px;
    }
}

/* 手机屏幕 - 1列 */
@media (max-width: 575px) {
    .videos-grid-4col {
        grid-template-columns: 1fr;
        gap: 15px;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .video-thumbnail-4col {
        height: 180px;
    }
    
    .video-content-4col {
        padding: 15px;
    }
    
    .video-title-4col {
        font-size: 14px;
        height: auto;
        -webkit-line-clamp: 3;
    }
    
    .video-footer-4col {
        font-size: 12px;
    }
    
    .video-category-4col {
        max-width: none;
        font-size: 11px;
    }
}

/* ============================================
   分类筛选样式调整
============================================ */

.category-filter {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 30px;
    justify-content: center;
}

.category-item {
    padding: 6px 16px;
    border: 1px solid var(--border-color);
    border-radius: 20px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 13px;
    transition: all 0.3s;
    white-space: nowrap;
}

.category-item:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-1px);
}

.category-item.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    font-weight: 500;
}

/* ============================================
   空状态样式
============================================ */

.empty-state {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 12px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.05);
    margin: 30px 0;
}

.empty-state .empty-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    opacity: 0.6;
}

.empty-state h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.empty-state p {
    color: var(--text-secondary);
    margin-bottom: 25px;
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ============================================
   分页导航样式
============================================ */

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin-top: 40px;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

.page-prev,
.page-next {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.page-prev:hover,
.page-next:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
}

.page-prev svg,
.page-next svg {
    width: 14px;
    height: 14px;
}

.page-numbers {
    display: flex;
    gap: 6px;
}

.page-numbers a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 36px;
    height: 36px;
    border-radius: 6px;
    color: var(--text-primary);
    text-decoration: none;
    font-size: 14px;
    transition: all 0.3s;
}

.page-numbers a:hover {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
}

.page-numbers a.active {
    background: var(--primary-color);
    color: white;
    font-weight: 500;
}

/* ============================================ 
   统一4列网格布局样式
============================================ */

/* 4列网格容器 */
.uniform-4col-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

/* 4列网格项目卡片 */
.uniform-4col-card {
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    height: 100%;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--border-color);
}

.uniform-4col-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

/* 4列卡片图像区域 */
.uniform-4col-image {
    height: 200px;
    overflow: hidden;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.uniform-4col-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.uniform-4col-card:hover .uniform-4col-image img {
    transform: scale(1.05);
}

.uniform-4col-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.8);
    font-size: 3rem;
}

/* 4列卡片内容区域 */
.uniform-4col-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* 4列卡片元数据 */
.uniform-4col-meta {
    margin-bottom: 12px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.uniform-4col-date {
    display: flex;
    align-items: center;
    gap: 6px;
}

.uniform-4col-date svg {
    width: 14px;
    height: 14px;
}

/* 4列卡片标题 */
.uniform-4col-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 12px;
    line-height: 1.4;
    color: var(--text-primary);
}

.uniform-4col-title a {
    color: inherit;
    text-decoration: none;
    transition: color 0.3s;
}

.uniform-4col-title a:hover {
    color: var(--primary-color);
}

/* 4列卡片描述 */
.uniform-4col-desc {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 20px;
    flex: 1;
    font-size: 0.9375rem;
}

/* 4列卡片链接/按钮 */
.uniform-4col-link {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.875rem;
    transition: all 0.3s;
    margin-top: auto;
}

.uniform-4col-link:hover {
    transform: translateX(5px);
}

.uniform-4col-link svg {
    width: 16px;
    height: 16px;
}

/* 合作伙伴logo容器 */
.partner-logo-4col {
    height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background: white;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    transition: all 0.3s;
}

.partner-logo-4col:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.partner-logo-4col a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
}

.partner-logo-4col img {
    max-width: 100%;
    max-height: 60px;
    object-fit: contain;
}

.partner-logo-4col span {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* 视频缩略图特殊样式 */
.video-thumbnail-uniform {
    position: relative;
}

.video-thumbnail-uniform .play-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s;
}

.video-thumbnail-uniform:hover .play-overlay {
    opacity: 1;
}

.play-button-uniform {
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
}

.play-button-uniform svg {
    width: 20px;
    height: 20px;
}

/* ============================================ 
   响应式设计 - 统一4列布局
============================================ */

/* 桌面大屏 - 4列 */
@media (min-width: 1200px) {
    .uniform-4col-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 30px;
    }
}

/* 桌面中等屏幕 - 3列 */
@media (max-width: 1199px) and (min-width: 992px) {
    .uniform-4col-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

/* 平板 - 2列 */
@media (max-width: 991px) and (min-width: 768px) {
    .uniform-4col-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
}

/* 手机 - 1列 */
@media (max-width: 767px) {
    .uniform-4col-grid {
        grid-template-columns: 1fr;
        gap: 20px;
        max-width: 400px;
        margin-left: auto;
        margin-right: auto;
    }
    
    .uniform-4col-image {
        height: 180px;
    }
}

/* ============================================ 
   特定部分样式微调
============================================ */

/* 新闻部分微调 */
.news-section .uniform-4col-image {
    height: 200px;
}

/* 设备部分微调 */
.equipment-section .uniform-4col-image {
    height: 180px;
}

/* 视频部分微调 */
.videos-section .uniform-4col-image {
    height: 180px;
}

/* 合作伙伴部分微调 */
.partners-section .uniform-4col-content {
    padding: 30px;
    text-align: center;
    justify-content: center;
}

.partners-section .uniform-4col-title {
    margin-bottom: 20px;
}

.partners-section .uniform-4col-desc {
    margin-bottom: 0;
    flex: none;
}

/* 特性部分保持原有样式不变 */
.features-section {
    /* 保持原有特性部分的一行4列布局 */
}