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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Microsoft YaHei", sans-serif;
    font-size: 16px;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

a {
    color: #1890ff;
    text-decoration: none;
    transition: color 0.3s;
}

a:hover {
    color: #40a9ff;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    font-size: 16px;
    font-weight: 500;
    text-align: center;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
}

.btn-primary {
    background-color: #1890ff;
    color: #fff;
}

.btn-primary:hover {
    background-color: #40a9ff;
    color: #fff;
}

.btn-secondary {
    background-color: #52c41a;
    color: #fff;
}

.btn-secondary:hover {
    background-color: #73d13d;
    color: #fff;
}

.btn-outline {
    background-color: transparent;
    border: 2px solid #1890ff;
    color: #1890ff;
}

.btn-outline:hover {
    background-color: #1890ff;
    color: #fff;
}

/* 头部导航 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.logo a {
    font-size: 20px;
    font-weight: bold;
    color: #1890ff;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 5px;
}

.nav-item > a {
    display: block;
    padding: 10px 18px;
    color: #333;
    font-size: 15px;
    border-radius: 4px;
    transition: all 0.3s;
}

.nav-item > a:hover,
.nav-item.active > a {
    color: #1890ff;
    background-color: #e6f7ff;
}

/* 下拉菜单 */
.dropdown {
    position: relative;
}

.dropdown-toggle::after {
    content: " ▼";
    font-size: 10px;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #fff;
    min-width: 180px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    border-radius: 4px;
    list-style: none;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s;
    padding: 8px 0;
    z-index: 100;
}

.dropdown:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-menu li a {
    display: block;
    padding: 10px 20px;
    color: #333;
    font-size: 14px;
    transition: all 0.3s;
}

.dropdown-menu li a:hover {
    background-color: #e6f7ff;
    color: #1890ff;
}

/* 移动端菜单按钮 */
.mobile-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
}

.mobile-toggle span {
    width: 25px;
    height: 3px;
    background-color: #333;
    border-radius: 2px;
}

/* 主内容区 */
.main-content {
    min-height: calc(100vh - 70px - 120px);
}

/* 区块样式 */
.section {
    padding: 80px 0;
}

.section.bg-light {
    background-color: #f7f9fc;
}

.section-header {
    text-align: center;
    margin-bottom: 50px;
}

.section-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 15px;
}

.section-subtitle {
    font-size: 16px;
    color: #666;
}

/* 首页横幅 */
.hero-banner {
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    color: #fff;
    padding: 100px 0;
    text-align: center;
}

.hero-title {
    font-size: 42px;
    font-weight: bold;
    margin-bottom: 20px;
}

.hero-subtitle {
    font-size: 20px;
    margin-bottom: 40px;
    opacity: 0.9;
}

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

.hero-buttons .btn-outline {
    border-color: #fff;
    color: #fff;
}

.hero-buttons .btn-outline:hover {
    background-color: #fff;
    color: #1890ff;
}

/* 产品背景 */
.background-content {
    display: flex;
    gap: 60px;
    align-items: center;
}

.background-text {
    flex: 1;
}

.background-text p {
    margin-bottom: 15px;
    color: #555;
    line-height: 1.8;
}

.background-stats {
    display: flex;
    gap: 40px;
}

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

.stat-number {
    font-size: 36px;
    font-weight: bold;
    color: #1890ff;
}

.stat-label {
    font-size: 14px;
    color: #666;
    margin-top: 5px;
}

/* 核心卖点 */
.features-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.feature-card {
    background-color: #fff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon img {
    max-width: 100%;
    max-height: 100%;
}

.icon-placeholder {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
}

.feature-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.feature-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.feature-link {
    font-size: 14px;
    color: #1890ff;
}

/* 合作卡片 */
.cooperation-cards {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.coop-card {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.coop-card h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
}

.coop-card p {
    color: #666;
    margin-bottom: 25px;
}

/* 产品中心 */
.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.product-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s, box-shadow 0.3s;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

.product-card-image {
    height: 200px;
    background-color: #f0f0f0;
    overflow: hidden;
}

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

.product-card-content {
    padding: 25px;
}

.product-card-title {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.product-card-desc {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.6;
}

/* 产品详情 */
.breadcrumb {
    margin-bottom: 30px;
    font-size: 14px;
    color: #666;
}

.breadcrumb a {
    color: #1890ff;
}

.breadcrumb span {
    color: #333;
}

.product-header {
    margin-bottom: 40px;
}

.product-title {
    font-size: 32px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
}

.product-subtitle {
    font-size: 16px;
    color: #666;
}

.product-content {
    display: flex;
    gap: 40px;
}

.product-main {
    flex: 1;
}

.product-image {
    margin-bottom: 30px;
}

.product-image img {
    max-width: 100%;
    border-radius: 8px;
}

.product-description,
.product-features {
    margin-bottom: 30px;
}

.product-description h2,
.product-features h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1890ff;
}

.description-content {
    color: #555;
    line-height: 1.8;
}

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

.features-list li {
    padding: 10px 0 10px 25px;
    position: relative;
    color: #555;
}

.features-list li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #52c41a;
    font-weight: bold;
}

.product-sidebar {
    width: 300px;
}

.sidebar-card {
    background-color: #f7f9fc;
    padding: 25px;
    border-radius: 8px;
    position: sticky;
    top: 90px;
}

.sidebar-card h3 {
    font-size: 18px;
    color: #333;
    margin-bottom: 15px;
}

.sidebar-card p {
    font-size: 14px;
    color: #666;
    margin-bottom: 20px;
}

/* 合作邀约 */
.cooperation-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
}

.cooperation-card {
    background-color: #fff;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
    text-align: center;
}

.coop-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
}

.cooperation-card h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
}

.cooperation-card p {
    color: #666;
    margin-bottom: 25px;
    line-height: 1.6;
}

/* 合作详情 */
.cooperation-detail {
    max-width: 800px;
    margin: 0 auto;
}

.detail-content h1 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}

.detail-content .lead {
    font-size: 18px;
    color: #666;
    margin-bottom: 40px;
}

.content-block {
    margin-bottom: 40px;
}

.content-block h2 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1890ff;
}

.content-block p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 15px;
}

.content-block ul {
    padding-left: 20px;
    margin-bottom: 15px;
}

.content-block ul li {
    color: #555;
    line-height: 1.8;
    margin-bottom: 10px;
}

.advantages-grid,
.benefits-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-top: 20px;
}

.advantage-item,
.benefit-item {
    background-color: #f7f9fc;
    padding: 20px;
    border-radius: 8px;
}

.advantage-item h3,
.benefit-item h3 {
    font-size: 16px;
    color: #1890ff;
    margin-bottom: 10px;
}

.advantage-item p,
.benefit-item p {
    font-size: 14px;
    color: #666;
    margin: 0;
}

.contact-info {
    background-color: #f7f9fc;
    padding: 20px;
    border-radius: 8px;
    margin-top: 15px;
}

.contact-info p {
    margin: 0;
}

/* 定制开发 */
.custom-content {
    max-width: 900px;
    margin: 0 auto;
}

.custom-intro {
    background-color: #f7f9fc;
    padding: 30px;
    border-radius: 8px;
    margin-bottom: 50px;
}

.custom-intro h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 15px;
}

.custom-intro p {
    color: #555;
    line-height: 1.8;
}

.custom-process h3,
.custom-services h3,
.custom-cta h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 30px;
    text-align: center;
}

.process-steps {
    display: flex;
    justify-content: space-between;
    margin-bottom: 50px;
    position: relative;
}

.process-steps::before {
    content: "";
    position: absolute;
    top: 30px;
    left: 10%;
    right: 10%;
    height: 2px;
    background-color: #e8e8e8;
    z-index: 0;
}

.step {
    text-align: center;
    position: relative;
    z-index: 1;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: bold;
    margin: 0 auto 15px;
}

.step h4 {
    font-size: 16px;
    color: #333;
    margin-bottom: 8px;
}

.step p {
    font-size: 13px;
    color: #666;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
    margin-bottom: 50px;
}

.service-item {
    background-color: #f7f9fc;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
}

.service-item h4 {
    font-size: 16px;
    color: #1890ff;
    margin-bottom: 10px;
}

.service-item p {
    font-size: 14px;
    color: #666;
}

.custom-cta {
    background: linear-gradient(135deg, #1890ff 0%, #096dd9 100%);
    color: #fff;
    padding: 50px;
    border-radius: 8px;
    text-align: center;
}

.custom-cta h3 {
    color: #fff;
    margin-bottom: 15px;
}

.custom-cta p {
    margin-bottom: 25px;
    opacity: 0.9;
}

.custom-cta .btn-primary {
    background-color: #fff;
    color: #1890ff;
}

.custom-cta .btn-primary:hover {
    background-color: #f0f0f0;
}

/* 关于我们 */
.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-intro,
.about-values,
.about-advantages,
.about-contact {
    margin-bottom: 50px;
}

.about-intro h3,
.about-values h3,
.about-advantages h3,
.about-contact h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1890ff;
}

.about-intro p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 15px;
}

.values-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.value-item {
    background-color: #f7f9fc;
    padding: 25px;
    border-radius: 8px;
    text-align: center;
}

.value-item h4 {
    font-size: 18px;
    color: #1890ff;
    margin-bottom: 10px;
}

.value-item p {
    color: #555;
}

.advantages-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.about-advantages .advantage-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
    background-color: #f7f9fc;
    padding: 25px;
    border-radius: 8px;
}

.advantage-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    flex-shrink: 0;
}

.advantage-content h4 {
    font-size: 18px;
    color: #333;
    margin-bottom: 8px;
}

.advantage-content p {
    color: #666;
    font-size: 14px;
    margin: 0;
}

.contact-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
}

.contact-item {
    background-color: #f7f9fc;
    padding: 20px;
    border-radius: 8px;
}

.contact-item h4 {
    font-size: 14px;
    color: #999;
    margin-bottom: 8px;
}

.contact-item p {
    font-size: 16px;
    color: #333;
    font-weight: 500;
}

/* 底部 */
.footer {
    background-color: #262626;
    color: #fff;
    padding: 30px 0;
}

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

.footer-info p {
    margin-bottom: 8px;
    font-size: 14px;
}

.footer-info .beian a {
    color: #aaa;
    font-size: 13px;
}

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

/* 响应式设计 */
@media (max-width: 1024px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header .container {
        height: 60px;
    }
    
    .nav {
        display: none;
        position: absolute;
        top: 60px;
        left: 0;
        right: 0;
        background-color: #fff;
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        padding: 20px;
    }
    
    .nav.active {
        display: block;
    }
    
    .nav-list {
        flex-direction: column;
    }
    
    .nav-item > a {
        padding: 12px 15px;
    }
    
    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: 20px;
    }
    
    .mobile-toggle {
        display: flex;
    }
    
    .hero-banner {
        padding: 60px 0;
    }
    
    .hero-title {
        font-size: 28px;
    }
    
    .hero-subtitle {
        font-size: 16px;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .section {
        padding: 50px 0;
    }
    
    .section-title {
        font-size: 24px;
    }
    
    .background-content {
        flex-direction: column;
    }
    
    .features-grid,
    .products-grid,
    .cooperation-grid,
    .cooperation-cards {
        grid-template-columns: 1fr;
    }
    
    .product-content {
        flex-direction: column;
    }
    
    .product-sidebar {
        width: 100%;
    }
    
    .process-steps {
        flex-direction: column;
        gap: 20px;
    }
    
    .process-steps::before {
        display: none;
    }
    
    .services-grid,
    .values-grid,
    .contact-grid,
    .advantages-grid,
    .benefits-grid {
        grid-template-columns: 1fr;
    }
    
    .custom-cta {
        padding: 30px 20px;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}

/* ===== 产品新闻 ===== */
.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 25px;
}

.news-card {
    background: #fff;
    border-radius: 8px;
    padding: 25px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
}

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

.news-tag {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 3px;
    font-size: 12px;
    font-weight: 500;
    margin-bottom: 12px;
    width: fit-content;
}

.tag-product { background: #e6f7ff; color: #1890ff; }
.tag-company { background: #f6ffed; color: #52c41a; }
.tag-industry { background: #fff7e6; color: #fa8c16; }

.news-title {
    font-size: 17px;
    font-weight: bold;
    color: #333;
    margin-bottom: 10px;
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-summary {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: 13px;
    padding-top: 12px;
    border-top: 1px solid #f0f0f0;
}

.news-date { color: #999; }
.news-link { color: #1890ff; font-weight: 500; }
.news-link:hover { color: #40a9ff; }

/* ===== 备案文档 ===== */
.docs-grid {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.doc-card {
    background: #fff;
    border-radius: 8px;
    padding: 20px 25px;
    display: flex;
    align-items: center;
    gap: 20px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    transition: box-shadow 0.3s;
}

.doc-card:hover {
    box-shadow: 0 4px 16px rgba(0,0,0,0.1);
}

.doc-icon {
    font-size: 36px;
    flex-shrink: 0;
    width: 56px;
    height: 56px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f7f9fc;
    border-radius: 8px;
}

.doc-info {
    flex: 1;
    min-width: 0;
}

.doc-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.doc-desc {
    font-size: 13px;
    color: #666;
    margin-bottom: 8px;
    display: -webkit-box;
    -webkit-line-clamp: 1;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.doc-meta {
    display: flex;
    gap: 15px;
    font-size: 12px;
    color: #999;
}

.doc-type {
    background: #f0f0f0;
    padding: 1px 6px;
    border-radius: 3px;
    font-weight: 500;
    color: #666;
}

.doc-action {
    flex-shrink: 0;
}

.btn-sm {
    padding: 6px 16px;
    font-size: 13px;
}

.doc-coming {
    font-size: 13px;
    color: #999;
}

@media (max-width: 768px) {
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .doc-card {
        flex-wrap: wrap;
    }
    
    .doc-action {
        width: 100%;
        text-align: right;
    }
}

/* ===== 立即咨询按钮 ===== */
.nav-consult-btn a {
    background: linear-gradient(135deg, #1890ff, #096dd9);
    color: #fff !important;
    border-radius: 20px;
    padding: 8px 20px !important;
    font-weight: 500;
    transition: all 0.3s;
}

.nav-consult-btn a:hover {
    background: linear-gradient(135deg, #40a9ff, #1890ff);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(24,144,255,0.3);
}

/* ===== 合作表单样式 ===== */
.coop-form {
    background: #f7f9fc;
    padding: 30px;
    border-radius: 8px;
    margin-top: 20px;
}

.coop-form .form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 0;
}

.coop-form .form-group {
    margin-bottom: 18px;
}

.coop-form .form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    font-size: 14px;
    color: #333;
}

.coop-form .form-group input,
.coop-form .form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid #d9d9d9;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.coop-form .form-group input:focus,
.coop-form .form-group textarea:focus {
    border-color: #1890ff;
    outline: none;
    box-shadow: 0 0 0 2px rgba(24,144,255,0.1);
}

.coop-form .required {
    color: #f5222d;
    margin-left: 2px;
}

.coop-form .btn-primary {
    margin-top: 10px;
}

.form-success {
    text-align: center;
    padding: 60px 20px;
    background: #f6ffed;
    border: 1px solid #b7eb8f;
    border-radius: 8px;
    margin: 30px 0;
}

.form-success .success-icon {
    width: 64px;
    height: 64px;
    background: #52c41a;
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 32px;
    margin: 0 auto 20px;
}

.form-success h3 {
    font-size: 22px;
    color: #333;
    margin-bottom: 12px;
}

.form-success p {
    font-size: 16px;
    color: #52c41a;
    margin-bottom: 25px;
}

.form-error {
    background: #fff2f0;
    border: 1px solid #ffccc7;
    color: #f5222d;
    padding: 10px 16px;
    border-radius: 4px;
    margin-bottom: 15px;
    font-size: 14px;
}

@media (max-width: 768px) {
    .coop-form .form-row {
        grid-template-columns: 1fr;
    }
    
    .coop-form {
        padding: 20px;
    }
}

/* ===== 业务信息 + 产品文档 双栏布局 ===== */
.info-docs-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: start;
}

.panel-title {
    font-size: 20px;
    font-weight: bold;
    color: #333;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #1890ff;
}

.business-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.business-card {
    background: #fff;
    border-radius: 8px;
    padding: 24px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    display: flex;
    gap: 18px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.business-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.12);
}

.business-icon {
    width: 52px;
    height: 52px;
    background: linear-gradient(135deg, #e6f7ff, #bae7ff);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
    flex-shrink: 0;
}

.business-content h4 {
    font-size: 17px;
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.business-content p {
    font-size: 14px;
    color: #666;
    line-height: 1.6;
    margin-bottom: 12px;
}

.business-features {
    list-style: none;
    padding: 0;
    margin-bottom: 15px;
}

.business-features li {
    font-size: 13px;
    color: #555;
    padding: 3px 0 3px 18px;
    position: relative;
}

.business-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: #52c41a;
    font-weight: bold;
    font-size: 12px;
}

.docs-panel .docs-grid {
    max-height: 520px;
    overflow-y: auto;
}

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