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

body {
    font-family: 'PingFang SC', 'Microsoft YaHei', sans-serif;
    font-size: 14px;
    color: #333;
    line-height: 1.6;
    background-color: #f5f5f5;
}

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

/* 顶部导航栏 */
.top-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
    transition: all 0.3s ease;
}

.top-nav.scrolled {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

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

.nav-left .logo {
    display: flex;
    align-items: center;
    color: #165DFF;
    font-size: 16px;
    font-weight: bold;
    text-decoration: none;
}

.nav-left .logo i {
    margin-right: 8px;
    font-size: 24px;
}

.nav-center .main-nav {
    display: flex;
    list-style: none;
}

.nav-center .main-nav li {
    position: relative;
    margin: 0 15px;
}

.nav-center .main-nav li a {
    display: block;
    padding: 10px 15px;
    color: #333;
    text-decoration: none;
    font-size: 15px;
    transition: color 0.3s ease;
}

.nav-center .main-nav li a:hover,
.nav-center .main-nav li a.active {
    color: #165DFF;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: #fff;
    border: 1px solid #eee;
    border-radius: 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    list-style: none;
    min-width: 160px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
}

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

.dropdown-menu li a {
    padding: 10px 15px;
    font-size: 14px;
}

.dropdown-menu li a:hover {
    background: #f5f7fa;
    color: #165DFF;
}

.nav-right {
    display: flex;
    align-items: center;
}

.search-box {
    display: flex;
    align-items: center;
    margin-right: 15px;
}

.search-box input {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    outline: none;
    font-size: 14px;
    width: 200px;
}

.search-box button {
    padding: 8px 15px;
    background: #165DFF;
    border: none;
    color: #fff;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: background 0.3s ease;
}

.search-box button:hover {
    background: #0d47a1;
}

.quote-btn {
    display: inline-block;
    padding: 10px 20px;
    background: #FF7D00;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    margin-right: 15px;
    transition: background 0.3s ease;
}

.quote-btn:hover {
    background: #e67000;
}

.phone-icon {
    display: flex;
    align-items: center;
    color: #165DFF;
    text-decoration: none;
    font-weight: bold;
}

.phone-icon i {
    margin-right: 5px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
}

/* 移动端菜单 */
.mobile-menu {
    display: none;
    position: fixed;
    top: 70px;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 999;
}

.mobile-menu ul {
    list-style: none;
}

.mobile-menu ul li a {
    display: block;
    padding: 15px 20px;
    color: #333;
    text-decoration: none;
    border-bottom: 1px solid #eee;
}

.mobile-menu ul li a:hover {
    background: #f5f7fa;
    color: #165DFF;
}

.mobile-submenu {
    display: none;
    background: #f9f9f9;
    list-style: none;
}

.mobile-submenu li a {
    padding-left: 40px;
    font-size: 13px;
}

.mobile-dropdown.active .mobile-submenu {
    display: block;
}

/* Banner轮播 */
.banner-section {
    margin-top: 70px;
    position: relative;
    height: 500px;
    overflow: hidden;
}

.banner-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.banner-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.5s ease;
    background: linear-gradient(135deg, #165DFF 0%, #0d47a1 100%);
}

.banner-slide.active {
    opacity: 1;
    visibility: visible;
}

.banner-content {
    text-align: center;
    color: #fff;
    max-width: 800px;
    padding: 0 20px;
}

.banner-content h1 {
    font-size: 48px;
    margin-bottom: 20px;
    font-weight: bold;
}

.banner-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

.cta-btn {
    display: inline-block;
    padding: 15px 40px;
    background: #FF7D00;
    color: #fff;
    text-decoration: none;
    border-radius: 4px;
    font-weight: bold;
    font-size: 16px;
    transition: background 0.3s ease;
}

.cta-btn:hover {
    background: #e67000;
}

.banner-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
}

.prev-btn, .next-btn {
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: #fff;
    padding: 10px 15px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
}

.prev-btn:hover, .next-btn:hover {
    background: rgba(255, 255, 255, 0.5);
}

.banner-dots {
    display: flex;
    margin: 0 20px;
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    margin: 0 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dot.active {
    background: #fff;
    transform: scale(1.2);
}

/* 核心优势区 */
.advantages-section {
    padding: 60px 0;
    background: #fff;
}

.advantages-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
}

.advantage-item {
    text-align: center;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 12px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.advantage-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, #165DFF 0%, #0d47a1 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.advantage-icon i {
    font-size: 36px;
    color: #fff;
}

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

.advantage-item p {
    color: #666;
    font-size: 14px;
    line-height: 1.6;
}

/* 产品分类 */
.categories-section {
    padding: 60px 0;
    background: #f5f5f5;
}

.categories-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

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

.category-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 20px;
    background: #fff;
    border-radius: 12px;
    text-decoration: none;
    color: #333;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.category-image {
    width: 80px;
    height: 80px;
    margin-bottom: 15px;
    background: linear-gradient(135deg, #f0f5ff 0%, #e6efff 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-image i {
    font-size: 36px;
    color: #165DFF;
}

.category-card span {
    font-size: 16px;
    font-weight: 500;
}

/* 爆款推荐 */
.products-section {
    padding: 60px 0;
    background: #fff;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 32px;
    color: #333;
}

.view-more {
    color: #165DFF;
    text-decoration: none;
    font-size: 14px;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.product-card {
    background: #fff;
    border: 1px solid #eee;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.product-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.product-tag {
    position: absolute;
    top: 10px;
    left: 10px;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: bold;
    color: #fff;
}

.product-tag.hot {
    background: #ff4757;
}

.product-tag.new {
    background: #2ed573;
}

.product-tag.cross {
    background: #165DFF;
}

.product-tag.channel {
    background: #FF7D00;
}

.product-card h3 {
    padding: 15px 15px 5px;
    font-size: 16px;
    color: #333;
}

.product-price {
    padding: 0 15px;
    margin-bottom: 15px;
}

.wholesale-price {
    font-size: 18px;
    font-weight: bold;
    color: #FF7D00;
}

.inquire-btn {
    display: block;
    margin: 0 15px 15px;
    padding: 12px;
    background: #165DFF;
    color: #fff;
    text-align: center;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.3s ease;
}

.inquire-btn:hover {
    background: #0d47a1;
}

/* 业务板块 */
.business-section {
    padding: 60px 0;
    background: #f5f5f5;
}

.business-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 40px;
    color: #333;
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.business-card {
    padding: 40px;
    border-radius: 12px;
    color: #fff;
}

.business-card.domestic {
    background: linear-gradient(135deg, #165DFF 0%, #0d47a1 100%);
}

.business-card.import {
    background: linear-gradient(135deg, #FF7D00 0%, #e67000 100%);
}

.business-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 20px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.business-icon i {
    font-size: 36px;
}

.business-card h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.business-card ul {
    list-style: none;
    margin-bottom: 20px;
}

.business-card ul li {
    padding: 8px 0;
    padding-left: 25px;
    position: relative;
}

.business-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #fff;
}

.business-btn {
    display: inline-block;
    padding: 12px 30px;
    background: rgba(255, 255, 255, 0.2);
    color: #fff;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    transition: background 0.3s ease;
}

.business-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

/* 信任背书区 */
.trust-section {
    padding: 60px 0;
    background: #fff;
}

.trust-section h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 30px;
    color: #333;
}

.trust-tags {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.trust-tags span {
    padding: 10px 25px;
    background: #f0f5ff;
    color: #165DFF;
    border-radius: 25px;
    font-size: 14px;
}

.trust-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 40px;
}

.certifications h3,
.customers h3 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #333;
}

.cert-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
}

.cert-item {
    text-align: center;
    padding: 30px 20px;
    background: #f8f9fa;
    border-radius: 12px;
}

.cert-item i {
    font-size: 40px;
    color: #165DFF;
    margin-bottom: 10px;
}

.cert-item span {
    display: block;
    font-size: 14px;
    color: #666;
}

.customers p {
    font-size: 15px;
    color: #666;
    line-height: 1.8;
}

/* 资讯动态 */
.news-section {
    padding: 60px 0;
    background: #f5f5f5;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.news-card {
    background: #fff;
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.news-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.news-image {
    height: 150px;
    overflow: hidden;
}

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

.news-card h3 {
    padding: 15px;
    font-size: 16px;
    color: #333;
    line-height: 1.4;
}

.news-card p {
    padding: 0 15px;
    font-size: 14px;
    color: #666;
    margin-bottom: 15px;
}

.news-date {
    display: block;
    padding: 0 15px 15px;
    font-size: 12px;
    color: #999;
}

/* 底部咨询转化区 */
.contact-section {
    padding: 60px 0;
    background: linear-gradient(135deg, #e8f0fe 0%, #d4e4ff 100%);
    text-align: center;
}

.contact-section h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #333;
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 20px;
}

.contact-btn {
    display: flex;
    align-items: center;
    padding: 15px 30px;
    border-radius: 8px;
    text-decoration: none;
    font-weight: bold;
    font-size: 16px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.contact-btn.phone {
    background: #165DFF;
    color: #fff;
}

.contact-btn.message {
    background: #FF7D00;
    color: #fff;
}

.contact-btn i {
    margin-right: 10px;
}

.contact-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

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

/* 页脚 */
.footer {
    background: #1a1a2e;
    color: #fff;
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
    margin-bottom: 40px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-column ul {
    list-style: none;
}

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

.footer-column ul li a {
    color: #999;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #fff;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.contact-item {
    display: flex;
    align-items: center;
    color: #999;
}

.contact-item i {
    margin-right: 10px;
    color: #165DFF;
}

.qrcode-placeholder {
    width: 120px;
    height: 120px;
    background: #333;
    border-radius: 12px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 10px;
}

.qrcode-placeholder i {
    font-size: 48px;
    margin-bottom: 5px;
}

.qrcode-placeholder span {
    font-size: 12px;
}

.footer-bottom {
    border-top: 1px solid #333;
    padding-top: 30px;
    text-align: center;
}

.footer-bottom p {
    color: #999;
    font-size: 14px;
}

.footer-bottom a {
    color: #165DFF;
    text-decoration: none;
}

.footer-bottom a:hover {
    text-decoration: underline;
}

/* 侧边悬浮栏 */
.float-sidebar {
    position: fixed;
    right: 20px;
    bottom: 100px;
    display: flex;
    flex-direction: column;
    gap: 15px;
    z-index: 998;
}

.float-btn {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background: #165DFF;
    color: #fff;
    border: none;
    border-radius: 25px;
    cursor: pointer;
    font-size: 14px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.float-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(22, 93, 255, 0.4);
}

.float-btn i {
    margin-right: 8px;
}

.float-btn:last-child {
    background: #FF7D00;
}

.float-btn:last-child:hover {
    box-shadow: 0 8px 20px rgba(255, 125, 0, 0.4);
}

/* 客服弹窗 */
.chat-modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1001;
    justify-content: center;
    align-items: center;
}

.chat-modal.active {
    display: flex;
}

.modal-content {
    background: #fff;
    border-radius: 12px;
    width: 90%;
    max-width: 450px;
    overflow: hidden;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    background: #165DFF;
    color: #fff;
}

.modal-header h3 {
    font-size: 18px;
}

.close-btn {
    background: none;
    border: none;
    color: #fff;
    font-size: 20px;
    cursor: pointer;
}

.modal-body {
    padding: 20px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
    color: #333;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 14px;
    outline: none;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: #165DFF;
}

.form-group textarea {
    resize: none;
    height: 100px;
}

.submit-btn {
    width: 100%;
    padding: 15px;
    background: #FF7D00;
    color: #fff;
    border: none;
    border-radius: 6px;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: background 0.3s ease;
}

.submit-btn:hover {
    background: #e67000;
}

/* 响应式设计 */
@media (max-width: 1200px) {
    .banner-content h1 {
        font-size: 36px;
    }
    
    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .categories-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .products-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .news-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 992px) {
    .nav-center,
    .nav-right {
        display: none;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .banner-section {
        height: 400px;
    }
    
    .banner-content h1 {
        font-size: 28px;
    }
    
    .banner-content p {
        font-size: 16px;
    }
    
    .business-grid {
        grid-template-columns: 1fr;
    }
    
    .trust-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .contact-item {
        justify-content: center;
    }
    
    .qrcode-placeholder {
        margin: 0 auto 10px;
    }
}

@media (max-width: 768px) {
    .top-nav .container {
        height: 60px;
    }
    
    .banner-section {
        margin-top: 60px;
        height: 300px;
    }
    
    .banner-content h1 {
        font-size: 22px;
    }
    
    .banner-content p {
        font-size: 14px;
        margin-bottom: 20px;
    }
    
    .cta-btn {
        padding: 12px 30px;
        font-size: 14px;
    }
    
    .advantages-grid,
    .categories-grid,
    .products-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .advantage-item,
    .category-card {
        padding: 20px;
    }
    
    .contact-actions {
        flex-direction: column;
        align-items: center;
    }
    
    .contact-btn {
        width: 100%;
        max-width: 300px;
        justify-content: center;
    }
    
    .float-sidebar {
        right: 10px;
        gap: 10px;
    }
    
    .float-btn span {
        display: none;
    }
    
    .float-btn {
        padding: 12px;
        border-radius: 50%;
    }
    
    .footer-bottom p {
        font-size: 12px;
    }
}

@media (max-width: 480px) {
    .nav-left .logo span {
        display: none;
    }
    
    .banner-content h1 {
        font-size: 18px;
    }
    
    .search-box input {
        width: 150px;
    }
    
    .company-address {
        font-size: 12px;
    }
}

/* ===================== 新增优化样式 ===================== */

/* 可访问性 - 隐藏但保持可访问 */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 跳过导航链接 */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: #165DFF;
    color: #fff;
    padding: 8px 16px;
    z-index: 10000;
    transition: top 0.3s ease;
    text-decoration: none;
    border-radius: 0 0 4px 0;
}

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

/* 焦点样式 - 键盘导航 */
a:focus,
button:focus,
input:focus,
textarea:focus {
    outline: 2px solid #165DFF;
    outline-offset: 2px;
}

/* 图片懒加载占位符 */
.lazy-image {
    transition: opacity 0.3s ease;
}

.lazy-image.loaded {
    opacity: 1;
}

/* 移动端底部固定联系栏 */
.mobile-bottom-bar {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: #fff;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    padding: 10px 0;
    z-index: 998;
}

.mobile-bottom-bar .mobile-contact-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 8px 15px;
    border: none;
    background: none;
    color: #333;
    font-size: 12px;
    text-decoration: none;
    transition: color 0.3s ease;
}

.mobile-bottom-bar .mobile-contact-btn i {
    font-size: 20px;
    margin-bottom: 4px;
}

.mobile-bottom-bar .mobile-contact-btn.phone {
    color: #165DFF;
}

.mobile-bottom-bar .mobile-contact-btn.quote {
    color: #FF7D00;
}

.mobile-bottom-bar .mobile-contact-btn.service {
    color: #2ed573;
}

@media (max-width: 768px) {
    .mobile-bottom-bar {
        display: flex;
        justify-content: space-around;
    }
    
    .float-sidebar {
        display: none;
    }
}

/* 客户评价模块 */
.testimonials-section {
    margin-top: 50px;
}

.testimonials-section h3 {
    text-align: center;
    font-size: 24px;
    margin-bottom: 30px;
    color: #333;
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
}

.testimonial-card {
    background: #f8f9fa;
    padding: 25px;
    border-radius: 12px;
    border-left: 4px solid #165DFF;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.testimonial-card p {
    font-size: 15px;
    line-height: 1.8;
    color: #555;
    margin-bottom: 15px;
    font-style: italic;
}

.testimonial-card cite {
    display: block;
    font-size: 14px;
    color: #165DFF;
    font-weight: 600;
}

@media (max-width: 992px) {
    .testimonials-grid {
        grid-template-columns: 1fr;
    }
}

/* 社交分享按钮 */
.social-share {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 15px;
}

.social-share span {
    font-size: 12px;
    color: #999;
}

.share-btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: none;
    color: #fff;
    cursor: pointer;
    transition: transform 0.3s ease, opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.share-btn:hover {
    transform: scale(1.1);
    opacity: 0.9;
}

.share-btn.wechat {
    background: #07c160;
}

.share-btn.weibo {
    background: #e6162d;
}

.share-btn.qq {
    background: #1296db;
}

/* 表单必填标记 */
.required {
    color: #ff4757;
}

/* 表单提示 */
.form-note {
    font-size: 12px;
    color: #999;
    text-align: center;
    margin-top: 10px;
}

/* 关闭移动端菜单按钮 */
.close-mobile-menu {
    position: absolute;
    top: 15px;
    right: 20px;
    background: none;
    border: none;
    font-size: 24px;
    color: #333;
    cursor: pointer;
    padding: 5px;
}

/* 响应式增强 */
@media (max-width: 768px) {
    .testimonials-section h3 {
        font-size: 20px;
    }
    
    .testimonial-card {
        padding: 20px;
    }
    
    .social-share {
        justify-content: center;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .qrcode-placeholder {
        margin: 0 auto 10px;
    }
    
    .contact-item {
        justify-content: center;
    }
}

/* 动画优化 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .cta-btn,
    .inquire-btn,
    .business-btn {
        border: 2px solid #fff;
    }
    
    .product-tag {
        border: 1px solid rgba(255, 255, 255, 0.5);
    }
}

/* 减少动画支持 */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}