:root {
    --primary-color: #0056b3;
    --secondary-color: #003366;
    --accent-color: #4CAF50;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --section-bg: #f5f7fa;
}

/* 全局样式 */
body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    margin: 0;
    padding: 0;
    background-color: white;
}

.container {
    width: 92%;
    max-width: 1400px;
    margin: 0 auto;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.header-top {
    padding: 1.5rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

/* Logo样式 */
.logo {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.logo img {
    height: 50px;
    width: auto;
    display: block;
    transition: transform 0.3s ease;
    object-fit: contain;
}

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

.company-slogan {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-top: 0.8rem;
    letter-spacing: 1px;
    font-weight: 300;
}

/* 搜索框样式 */
.search-box {
    flex: 1;
    max-width: 500px;
    margin: 0 3rem;
    position: relative;
    display: flex;
    align-items: stretch;
}

.search-box input {
    flex: 1;
    height: 42px;
    padding: 0 1rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 4px 0 0 4px;
    background: rgba(255, 255, 255, 0.1);
    color: white;
    font-size: 1rem;
    transition: all 0.3s ease;
    border-right: none;
    line-height: 42px;
}

.search-box input::placeholder {
    color: rgba(255, 255, 255, 0.7);
}

.search-box input:focus {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    outline: none;
}

.search-box button {
    width: 50px;
    border: 1px solid var(--accent-color);
    background: var(--accent-color);
    color: white;
    border-radius: 0 4px 4px 0;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
}

.search-box button i {
    font-size: 1rem;
}

.search-box button:hover {
    background: #3d8b40;
    border-color: #3d8b40;
}

.search-box button:active {
    background: #2d632f;
    border-color: #2d632f;
}

/* 服务热线样式 */
.service-hotline {
    display: flex;
    align-items: center;
    font-size: 1rem;
}

.service-hotline i {
    font-size: 1.5rem;
    margin-right: 0.8rem;
    color: var(--accent-color);
}

.hotline-info {
    display: flex;
    flex-direction: column;
}

.hotline-label {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.8);
}

.hotline-number {
    font-size: 1.2rem;
    font-weight: bold;
    color: white;
}

/* 导航栏样式 */
.header-nav {
    padding: 0.8rem 0;
    background: rgba(0, 0, 0, 0.1);
}

nav ul {
    display: flex;
    justify-content: center;
    list-style: none;
    padding: 0;
    margin: 0;
}

nav ul li {
    margin: 0 1.5rem;
    position: relative;
    display: flex;
    align-items: center;
}

nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    font-weight: 500;
    padding: 0.5rem 0;
    transition: color 0.3s;
    display: flex;
    align-items: center;
}

/* 下拉菜单样式 */
.nav-item {
    display: flex;
    align-items: center;
}

.nav-item > a {
    display: flex;
    align-items: center;
    height: 100%;
}

.nav-item > a::after {
    content: '\f107';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    margin-left: 0.5rem;
    transition: transform 0.3s;
    font-size: 0.8em;
    line-height: 1;
}

.nav-item:hover > a::after {
    transform: rotate(180deg);
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);
    padding: 15px;
    min-width: 220px;
    border-radius: 5px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 100;
}

/* 两列布局下拉菜单 */
.dropdown-columns {
    display: flex;
    gap: 20px;
}

.dropdown-column {
    min-width: 200px;
}

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

.dropdown-menu a {
    display: flex;
    align-items: center;
    padding: 10px;
    color: var(--secondary-color);
    text-decoration: none;
    transition: all 0.2s ease;
    border-radius: 4px;
    margin-bottom: 2px;
}

.dropdown-menu a i {
    margin-right: 10px;
    width: 20px;
    text-align: center;
    color: var(--primary-color);
    transition: transform 0.2s ease;
}

.dropdown-menu a:hover {
    background: #f5f5f5;
    color: var(--primary-color);
}

.dropdown-menu a:hover i {
    transform: translateX(3px);
}

.dropdown-menu .menu-title {
    font-weight: 600;
    color: var(--primary-color);
    padding: 0 10px 10px;
    margin-bottom: 5px;
    border-bottom: 1px solid #eee;
}

.dropdown-menu a:hover {
    background: linear-gradient(to right, var(--primary-color) 0%, var(--primary-color) 5px, var(--light-color) 5px, var(--light-color) 100%);
    color: var(--primary-color) !important;
    padding-left: 2rem;
}

.dropdown-menu a:hover i {
    color: var(--accent-color);
}

.dropdown-menu .menu-title {
    font-size: 0.85em;
    color: #666;
    padding: 0.5rem 1.5rem;
    margin-top: 0.5rem;
    border-top: 1px solid #eee;
}

/* 产品中心样式 */
.products-section {
    padding: 60px 0;
    background: #f8f9fa;
}

.products-section h1 {
    text-align: center;
    color: #333;
    margin-bottom: 50px;
    font-size: 2.5rem;
    position: relative;
}

.products-section h1:after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: #007bff;
    margin: 20px auto 0;
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
    padding: 20px;
}

.category-card {
    background: white;
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    position: relative;
    overflow: hidden;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.category-card:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 5px;
    background: #007bff;
    transform: scaleX(0);
    transform-origin: right;
    transition: transform 0.3s ease;
}

.category-card:hover:before {
    transform: scaleX(1);
    transform-origin: left;
}

.category-icon {
    width: 80px;
    height: 80px;
    background: #f8f9fa;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon {
    background: #007bff;
}

.category-icon i {
    font-size: 32px;
    color: #007bff;
    transition: all 0.3s ease;
}

.category-card:hover .category-icon i {
    color: white;
}

.category-card h2 {
    color: #333;
    font-size: 1.5rem;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 15px;
}

.category-card h2:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 2px;
    background: #e9ecef;
}

.category-card ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.category-card li {
    margin: 12px 0;
    transition: all 0.3s ease;
}

.category-card li a {
    color: #666;
    text-decoration: none;
    display: block;
    padding: 8px 15px;
    border-radius: 6px;
    transition: all 0.3s ease;
    position: relative;
    padding-left: 25px;
}

.category-card li a:before {
    content: '•';
    position: absolute;
    left: 10px;
    color: #007bff;
}

.category-card li a:hover {
    color: #007bff;
    background: #f8f9fa;
    transform: translateX(5px);
}

@media (max-width: 768px) {
    .category-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
        padding: 15px;
    }

    .category-card {
        padding: 25px;
    }

    .category-icon {
        width: 60px;
        height: 60px;
    }

    .category-icon i {
        font-size: 24px;
    }

    .category-card h2 {
        font-size: 1.3rem;
    }
}

@media (max-width: 480px) {
    .products-section h1 {
        font-size: 2rem;
    }

    .category-grid {
        grid-template-columns: 1fr;
    }
}

/* 服务支持样式 */
.services-section {
    padding: 4rem 0;
    background-color: white;
}

.services-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.service-category {
    background: var(--section-bg);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.service-category::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.service-category:hover::before {
    transform: scaleX(1);
}

.service-category:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.service-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.service-icon i {
    font-size: 2rem;
    color: var(--primary-color);
}

.service-category h3 {
    color: var(--dark-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.service-category p {
    color: #666;
    margin-bottom: 1.5rem;
}

.service-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
    text-align: left;
}

.service-category ul li {
    padding: 0.5rem 0;
    color: #555;
    position: relative;
    padding-left: 1.5rem;
}

.service-category ul li::before {
    content: '\f00c';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
}

/* 页脚样式 */
footer {
    background: var(--dark-color);
    color: white;
    padding: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: white;
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.footer-section h4::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 50px;
    height: 2px;
    background: var(--accent-color);
}

.footer-section p {
    margin: 0.8rem 0;
    color: rgba(255, 255, 255, 0.8);
}

.footer-section p i {
    margin-right: 0.8rem;
    color: var(--accent-color);
}

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

.footer-section ul li {
    margin: 0.8rem 0;
}

.footer-section ul li a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color 0.3s;
}

.footer-section ul li a:hover {
    color: var(--accent-color);
}

.social-links {
    display: flex;
    gap: 1rem;
}

.social-links a {
    color: white;
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--accent-color);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

/* 移动端响应式优化 */
@media (max-width: 768px) {
    .container {
        width: 95%;
        padding: 0 10px;
    }

    .header-content {
        flex-direction: column;
        align-items: center;
        padding: 1rem 0;
    }

    .logo {
        margin-bottom: 1rem;
        text-align: center;
        align-items: center;
    }

    .search-box {
        width: 100%;
        max-width: 100%;
        margin: 1rem 0;
    }

    .service-hotline {
        margin-top: 1rem;
        justify-content: center;
    }

    nav ul {
        flex-direction: column;
        align-items: center;
    }

    nav ul li {
        margin: 0.5rem 0;
        width: 100%;
        text-align: center;
    }

    .dropdown-menu {
        position: static;
        width: 100%;
        box-shadow: none;
        background: rgba(0, 0, 0, 0.1);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-section {
        margin-bottom: 2rem;
        width: 100%;
    }

    .social-links {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .header-top {
        padding: 1rem 0;
    }

    .logo img {
        height: 40px;
    }

    .company-slogan {
        font-size: 0.9rem;
    }

    .search-box input {
        height: 36px;
        font-size: 0.9rem;
    }

    .hotline-number {
        font-size: 1rem;
    }

    .nav-item > a {
        font-size: 1rem;
        padding: 0.3rem 0;
    }

    .footer-bottom {
        padding: 1rem 0;
        font-size: 0.9rem;
    }
}

/* 关于我们样式 */
.about-section {
    padding: 4rem 0;
    background-color: var(--section-bg);
}

.about-section h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.about-content {
    background: white;
    border-radius: 10px;
    padding: 3rem;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
}

.about-text h3 {
    color: var(--primary-color);
    font-size: 1.8rem;
    margin: 2rem 0 1.5rem;
    position: relative;
    padding-bottom: 0.8rem;
}

.about-text h3:first-child {
    margin-top: 0;
}

.about-text h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, var(--primary-color), var(--accent-color));
}

.about-text p {
    color: #555;
    line-height: 1.8;
    margin-bottom: 1.5rem;
}

.about-text ul {
    list-style: none;
    padding: 0;
    margin: 0 0 2rem;
}

.about-text ul li {
    padding: 0.8rem 0;
    color: #555;
    display: flex;
    align-items: center;
}

.about-text ul li i {
    color: var(--accent-color);
    margin-right: 1rem;
    font-size: 1.2rem;
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin: 2rem 0;
}

.partner-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.partner-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.partner-item img {
    max-width: 100%;
    height: 80px;
    object-fit: contain;
    margin-bottom: 1rem;
}

.partner-item h4 {
    color: var(--dark-color);
    font-size: 1.1rem;
    margin: 0;
    font-weight: 500;
}

@media (max-width: 1200px) {
    .partners-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .partners-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .partner-item img {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .partners-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .partner-item {
        padding: 1rem;
    }
}

/* 联系我们页面样式 */
.contact-page {
    background: #f8f9fa;
    padding-bottom: 40px;
}

.contact-banner {
    background: linear-gradient(rgba(0, 86, 179, 0.9), rgba(0, 51, 102, 0.9));
    padding: 40px 0;
    text-align: center;
    color: white;
    margin-bottom: 40px;
}

.contact-banner h1 {
    font-size: 2.2rem;
    margin-bottom: 12px;
    animation: fadeInDown 0.8s ease;
}

.contact-banner p {
    font-size: 1.1rem;
    opacity: 0.9;
    animation: fadeInUp 0.8s ease 0.2s;
    animation-fill-mode: forwards;
}

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

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

.contact-card {
    background: white;
    padding: 25px 15px;
    border-radius: 12px;
    text-align: center;
    transition: all 0.4s ease;
    box-shadow: 0 6px 20px rgba(0,0,0,0.08);
    position: relative;
    overflow: hidden;
    min-height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.contact-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(to right, #007bff, #00a6ff);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.4s ease;
}

.contact-card:hover::before {
    transform: scaleX(1);
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.12);
}

.card-icon {
    width: 60px;
    height: 60px;
    background: #f0f7ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    transition: all 0.4s ease;
    position: relative;
    z-index: 1;
}

.contact-card:hover .card-icon {
    background: #007bff;
    transform: rotateY(180deg);
}

.card-icon i {
    font-size: 24px;
    color: #007bff;
    transition: all 0.4s ease;
}

.contact-card:hover .card-icon i {
    color: white;
    transform: rotateY(-180deg);
}

.contact-card h3 {
    color: #333;
    font-size: 1.3rem;
    margin-bottom: 12px;
    position: relative;
    padding-bottom: 10px;
}

.contact-card h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 35px;
    height: 2px;
    background: #007bff;
    transition: width 0.3s ease;
}

.contact-card:hover h3::after {
    width: 50px;
}

.contact-card p {
    color: #666;
    line-height: 1.4;
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.contact-card .highlight {
    color: #007bff;
    font-size: 1.1rem;
    font-weight: 600;
    margin: 10px 0;
}

.contact-card .sub-text {
    color: #888;
    font-size: 0.85rem;
    font-style: italic;
}

.contact-card .time-info {
    margin: 6px 0;
    color: #555;
}

.contact-card .time-info span {
    color: #007bff;
    font-weight: 500;
}

.card-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 18px;
    background: #f0f7ff;
    color: #007bff;
    border-radius: 18px;
    text-decoration: none;
    transition: all 0.3s ease;
    margin-top: 12px;
    font-weight: 500;
    font-size: 0.9rem;
}

.card-btn:hover {
    background: #007bff;
    color: white;
    transform: translateX(5px);
}

.qr-code {
    margin-top: 12px;
    position: relative;
}

.qr-code img {
    width: 130px;
    height: 130px;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
    transition: transform 0.4s ease;
    margin-bottom: 8px;
}

.qr-code img:hover {
    transform: scale(1.05);
}

/* 地址区域样式 */
.address-section {
    padding: 40px 0;
    background: white;
}

.address-card {
    background: linear-gradient(145deg, #ffffff, #f5f8ff);
    border-radius: 20px;
    padding: 40px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    display: flex;
    align-items: flex-start;
    gap: 30px;
    max-width: 800px;
    margin: 0 auto;
    transition: all 0.4s ease;
}

.address-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.address-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #007bff, #00a6ff);
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.address-icon i {
    font-size: 35px;
    color: white;
}

.address-content {
    flex-grow: 1;
}

.address-content h2 {
    color: #333;
    font-size: 2rem;
    margin-bottom: 15px;
    position: relative;
    padding-bottom: 15px;
}

.address-content h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: linear-gradient(to right, #007bff, #00a6ff);
}

.company-name {
    font-size: 1.4rem;
    color: #007bff;
    font-weight: 600;
    margin-bottom: 20px;
}

.address-details {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.address-details p {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #555;
    font-size: 1.1rem;
    line-height: 1.6;
}

.address-details i {
    color: #007bff;
    font-size: 1.2rem;
    width: 24px;
    text-align: center;
}

@media (max-width: 768px) {
    .address-card {
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 30px 20px;
    }

    .address-icon {
        width: 70px;
        height: 70px;
    }

    .address-icon i {
        font-size: 30px;
    }

    .address-content h2::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .address-details p {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .address-card {
        padding: 25px 15px;
    }

    .address-content h2 {
        font-size: 1.8rem;
    }

    .company-name {
        font-size: 1.2rem;
    }

    .address-details p {
        font-size: 1rem;
    }
}

/* 联系我们样式 */
.contact-section {
    margin-top: 60px;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 8px;
    text-align: center;
}

.contact-section h2 {
    color: #333;
    margin-bottom: 20px;
}

.contact-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 20px;
}

.contact-info p {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #666;
}

.contact-info i {
    color: #007bff;
}

.contact-form {
    background: #fff;
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 1rem;
}

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--primary-color);
    outline: none;
    box-shadow: 0 0 0 2px rgba(0,86,179,0.1);
}

.submit-btn {
    background: var(--primary-color);
    color: white;
    padding: 0.8rem 2rem;
    border: none;
    border-radius: 4px;
    font-size: 1rem;
    cursor: pointer;
    transition: background-color 0.3s;
}

.submit-btn:hover {
    background: #004494;
}

.submit-btn:disabled {
    background: #ccc;
    cursor: not-allowed;
}

.form-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 4px;
    display: none;
}

.form-message.success {
    display: block;
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.form-message.error {
    display: block;
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

/* 响应式设计补充 */
@media (max-width: 992px) {
    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .baidu-map {
        height: 300px;
    }
}

@media (max-width: 768px) {
    .contact-content {
        margin-top: 2rem;
    }
    
    .contact-info {
        gap: 1.5rem;
    }
    
    .baidu-map {
        height: 250px;
    }
}

@media (max-width: 480px) {
    .contact-info {
        grid-template-columns: 1fr;
    }
}

/* 首页英雄区域样式 */
.hero {
    background: linear-gradient(rgba(0, 86, 179, 0.7), rgba(0, 51, 102, 0.7)), url('index_backgroud.png') no-repeat center center/cover;
    height: 500px;
    display: flex;
    align-items: center;
    text-align: center;
    color: white;
    position: relative;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease 0.4s;
    opacity: 0;
    animation-fill-mode: forwards;
}

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

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

.btn-primary:hover {
    background: #3d8b40;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    transform: translateY(-2px);
}

/* 品牌区域样式 */
.brands {
    padding: 4rem 0;
    background-color: var(--section-bg);
}

.brands h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--secondary-color);
    font-size: 2.2rem;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    margin: 0 auto;
    max-width: 1200px;
}

.brand-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    text-align: center;
}

.brand-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 12px rgba(0,0,0,0.15);
}

.brand-item img {
    max-width: 100%;
    height: 80px;
    object-fit: contain;
    margin-bottom: 1rem;
}

.brand-item h3 {
    color: var(--dark-color);
    font-size: 1.1rem;
    margin: 0;
}

@media (max-width: 1200px) {
    .brands-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

@media (max-width: 768px) {
    .brands-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
    
    .brand-item img {
        height: 60px;
    }
}

@media (max-width: 480px) {
    .brands-grid {
        grid-template-columns: repeat(1, 1fr);
    }
    
    .brand-item {
        padding: 1rem;
    }
}

/* 热门产品样式 */
.featured-products {
    padding: 4rem 0;
    background: white;
}

.featured-products h2 {
    text-align: center;
    margin-bottom: 3rem;
    color: var(--secondary-color);
    font-size: 2.2rem;
}

.products-grid {
    display: flex;
    justify-content: space-between;
    gap: 2rem;
    margin: 0 auto;
    max-width: 1200px;
}

.product-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    width: calc(50% - 1rem);
    position: relative;
    display: flex;
    flex-direction: column;
}

.product-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 15px rgba(0,0,0,0.15);
}

.product-card img {
    width: 100%;
    height: 320px;
    object-fit: contain;
    background-color: #f8f9fa;
    padding: 1.5rem;
    position: relative;
    z-index: 1;
    border-bottom: 1px solid #eee;
    transition: all 0.3s ease;
}

.product-card:hover img {
    background-color: #f0f2f5;
}

.product-info {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-info h3 {
    color: var(--secondary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.product-info p {
    color: var(--dark-color);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.product-buttons {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

.btn-primary {
    background: var(--accent-color);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--accent-color);
}

.btn-primary:hover {
    background: #3d8b40;
    border-color: #3d8b40;
}

.btn-outline {
    color: var(--secondary-color);
    padding: 0.8rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid var(--secondary-color);
}

.btn-outline:hover {
    background: var(--secondary-color);
    color: white;
}

@media (max-width: 768px) {
    .products-grid {
        flex-direction: column;
    }
    
    .product-card {
        width: 100%;
        margin: 0 1rem 2rem;
    }
    
    .product-card img {
        height: 280px;
        padding: 1rem;
    }
    
    .product-info {
        padding: 1.5rem;
    }
    
    .product-info h3 {
        font-size: 1.3rem;
    }
    
    .product-buttons {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-outline {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .product-card {
        margin: 0 0.5rem 1.5rem;
    }
    
    .product-card img {
        height: 220px;
        padding: 0.8rem;
    }
    
    .product-info {
        padding: 1rem;
    }
}

/* 服务优势样式 */
.advantages {
    padding: 4rem 0;
    background: white;
}

.advantages h2 {
    text-align: center;
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.advantage-item {
    text-align: center;
    padding: 2rem;
    background: var(--light-color);
    border-radius: 8px;
    transition: all 0.3s ease;
}

.advantage-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.advantage-item i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

.advantage-item h3 {
    color: var(--dark-color);
    margin: 0 0 1rem;
    font-size: 1.5rem;
}

.advantage-item p {
    color: #666;
    margin: 0;
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计补充 */
@media (max-width: 768px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-content p {
        font-size: 1rem;
    }

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        text-align: center;
    }

    .advantages-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .brands-grid {
        grid-template-columns: 1fr;
    }

    .products-grid {
        grid-template-columns: 1fr;
    }
}

.map-container {
    grid-column: 1 / -1;
    height: 400px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    margin: 2rem 0;
    position: relative;
}

.baidu-map {
    width: 100%;
    height: 100%;
}

.baidu-map iframe {
    border: none;
    width: 100%;
    height: 100%;
}

.map-overlay {
    position: absolute;
    top: 20px;
    left: 20px;
    background: rgba(255, 255, 255, 0.95);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
    max-width: 300px;
}

.map-info h4 {
    color: var(--secondary-color);
    margin: 0 0 10px 0;
    font-size: 1.2rem;
}

.map-info p {
    color: var(--dark-color);
    margin: 0 0 15px 0;
    font-size: 0.95rem;
    line-height: 1.4;
}

.map-info i {
    color: var(--accent-color);
    margin-right: 8px;
}

.map-info .btn {
    display: inline-block;
    padding: 8px 16px;
    font-size: 0.9rem;
}

@media (max-width: 992px) {
    .map-container {
        height: 350px;
    }
    
    .map-overlay {
        top: 15px;
        left: 15px;
        padding: 15px;
        max-width: 250px;
    }

}

@media (max-width: 768px) {
    .map-container {
        height: 300px;
        margin: 1.5rem 0;
    }
    
    .map-overlay {
        position: relative;
        top: auto;
        left: auto;
        max-width: none;
        margin-top: -60px;
        margin-left: 15px;
        margin-right: 15px;
        background: white;
    }
}

@media (max-width: 480px) {
    .map-container {
        height: 250px;
    }
    
    .map-info h4 {
        font-size: 1.1rem;
    }
    
    .map-info p {
        font-size: 0.9rem;
    }
}

/* 微信联系样式 */
.wechat-container {
    position: relative;
    cursor: pointer;
}

.wechat-container .fab.fa-weixin {
    color: #2aae67;
    font-size: 24px;
}

.qr-code-popup {
    position: absolute;
    top: 50%;
    left: 100%;
    transform: translateY(-50%);
    background: white;
    padding: 10px;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.15);
    display: none;
    z-index: 1000;
    margin-left: 20px;
}

.qr-code-popup::before {
    content: '';
    position: absolute;
    top: 50%;
    left: -10px;
    transform: translateY(-50%);
    border-width: 10px;
    border-style: solid;
    border-color: transparent white transparent transparent;
}

.qr-code-popup img {
    width: 150px;
    height: 150px;
    display: block;
}

.wechat-container:hover .qr-code-popup {
    display: block;
}

/* 移除旧的微信联系样式 */
.wechat-contact {
    display: none;
}

/* 产品详情样式 */
.product-description {
    margin: 20px 0;
    line-height: 1.6;
}

.product-description ul {
    list-style-type: none;
    padding-left: 0;
    margin: 15px 0;
}

.product-description li {
    margin: 8px 0;
    padding-left: 20px;
    position: relative;
}

.product-description li:before {
    content: "•";
    position: absolute;
    left: 0;
    color: #007bff;
}

.product-description .note {
    color: #dc3545;
    font-style: italic;
    margin-top: 15px;
}

.product-parameters {
    margin-top: 30px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 8px;
}

.product-parameters h4 {
    margin-bottom: 15px;
    color: #333;
    font-size: 1.2em;
}

.product-parameters img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

/* 面包屑导航样式 */
.breadcrumb {
    background: #f8f9fa;
    padding: 15px 0;
    margin-bottom: 30px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
}

.breadcrumb-nav a {
    color: #007bff;
    text-decoration: none;
    transition: color 0.3s ease;
    position: relative;
}

.breadcrumb-nav a:hover {
    color: #0056b3;
}

.breadcrumb-nav a:hover::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #007bff;
    animation: slideIn 0.3s ease;
}

.breadcrumb-nav i {
    color: #6c757d;
    font-size: 0.8rem;
}

.breadcrumb-nav span {
    color: #495057;
    font-weight: 500;
}

@keyframes slideIn {
    from {
        transform: scaleX(0);
    }
    to {
        transform: scaleX(1);
    }
}

/* 产品按钮样式 */
.product-buttons {
    display: flex;
    gap: 15px;
    margin: 30px 0;
    justify-content: center;
}

.product-buttons .btn-primary {
    background: #ff4400;
    border-color: #ff4400;
    color: white;
    padding: 12px 25px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-buttons .btn-primary:hover {
    background: #ff5500;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(255, 68, 0, 0.2);
}

.product-buttons .btn-outline {
    border: 2px solid #007bff;
    color: #007bff;
    padding: 12px 25px;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.product-buttons .btn-outline:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 123, 255, 0.2);
}

@media (max-width: 768px) {
    .breadcrumb {
        margin-bottom: 20px;
    }

    .breadcrumb-nav {
        font-size: 0.9rem;
    }

    .product-buttons {
        flex-direction: column;
        gap: 10px;
    }

    .product-buttons .btn-primary,
    .product-buttons .btn-outline {
        width: 100%;
        justify-content: center;
    }
}

/* 下载部分样式 */
.download-section {
    margin: 3rem 0;
    padding: 2rem;
    background-color: var(--section-bg);
    border-radius: 10px;
}

.download-section h2 {
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
    font-size: 1.8rem;
}

.download-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
}

.download-item {
    display: flex;
    align-items: center;
    padding: 1rem;
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 2px 6px rgba(0,0,0,0.1);
    text-decoration: none;
    color: var(--dark-color);
    transition: all 0.3s ease;
}

.download-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    color: var(--primary-color);
}

.download-item i {
    font-size: 1.8rem;
    color: #e74c3c;
    margin-right: 1rem;
}

.download-item span {
    font-size: 0.95rem;
    font-weight: 500;
}

@media (max-width: 768px) {
    .download-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .download-item {
        padding: 0.8rem;
    }
    
    .download-item i {
        font-size: 1.5rem;
    }
    
    .download-item span {
        font-size: 0.85rem;
    }
}

@media (max-width: 480px) {
    .download-grid {
        grid-template-columns: 1fr;
    }
}

/* 产品应用场合样式 */
.product-applications {
    margin: 2rem 0;
}

.product-applications h2 {
    color: var(--secondary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.product-applications ul {
    list-style: none;
    padding-left: 1rem;
}

.product-applications li {
    margin-bottom: 0.8rem;
    position: relative;
    padding-left: 1.5rem;
    line-height: 1.5;
}

.product-applications li:before {
    content: '\f058';
    font-family: 'Font Awesome 5 Free';
    font-weight: 900;
    color: var(--accent-color);
    position: absolute;
    left: 0;
    top: 2px;
}

/* 搜索结果页面样式 */
.search-results-container {
    padding: 3rem 0;
}

.search-results-container h1 {
    color: var(--secondary-color);
    margin-bottom: 1.5rem;
    font-size: 2rem;
}

.search-query {
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #eee;
}

.search-query p {
    font-size: 1.1rem;
}

.search-query span {
    font-weight: 600;
    color: var(--primary-color);
}

.search-result-item {
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid #eee;
}

.search-result-item:last-child {
    border-bottom: none;
}

.search-result-item h3 {
    margin-bottom: 0.5rem;
}

.search-result-item h3 a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.3s;
}

.search-result-item h3 a:hover {
    color: var(--secondary-color);
}

.result-category {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 0.8rem;
    display: inline-block;
    background-color: #f0f0f0;
    padding: 0.2rem 0.8rem;
    border-radius: 3px;
}

.result-description {
    color: #444;
    line-height: 1.6;
}

.no-results {
    padding: 2rem;
    background-color: #f8f9fa;
    border-radius: 8px;
    text-align: center;
}

.no-results p {
    font-size: 1.1rem;
    color: #666;
}

@media (max-width: 768px) {
    .search-results-container {
        padding: 2rem 0;
    }
    
    .search-results-container h1 {
        font-size: 1.8rem;
    }
    
    .search-query p {
        font-size: 1rem;
    }
    
    .search-result-item {
        margin-bottom: 1.5rem;
        padding-bottom: 1rem;
    }
}

@media (max-width: 480px) {
    .search-results-container h1 {
        font-size: 1.5rem;
    }
    
    .result-description {
        font-size: 0.9rem;
    }
}

/* 轮播图样式 */
.hero-swiper {
    width: 100%;
    height: 500px;
    position: relative;
    z-index: 1;
}

.swiper-slide {
    position: relative;
    background-size: cover;
    background-position: center;
    color: white;
    display: flex;
    align-items: center;
    height: 100%;
}

.swiper-slide::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    z-index: 1;
}

.slide-solution {
    background: linear-gradient(135deg, #0056b3, #003366), url('index_backgroud.png') no-repeat center center/cover;
    background-blend-mode: overlay;
}

.slide-service {
    background: linear-gradient(135deg, #004d40, #00796b), url('index_backgroud.png') no-repeat center center/cover;
    background-blend-mode: overlay;
}

.slide-brands {
    background: linear-gradient(135deg, #303f9f, #1a237e), url('index_backgroud.png') no-repeat center center/cover;
    background-blend-mode: overlay;
}

.swiper-slide .container {
    position: relative;
    z-index: 2;
}

.swiper-pagination-bullet {
    width: 12px;
    height: 12px;
    background: white;
    opacity: 0.6;
}

.swiper-pagination-bullet-active {
    opacity: 1;
    background: var(--accent-color);
}

/* 解决方案区域样式 */
.solutions-section {
    padding: 4rem 0;
    background-color: var(--section-bg);
}

.solutions-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.solution-card {
    background: white;
    border-radius: 8px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
    border: 1px solid #eee;
}

.solution-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
    border-color: var(--primary-color);
}

.solution-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-color);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

.solution-icon i {
    font-size: 2rem;
}

.solution-card:hover .solution-icon {
    background: var(--accent-color);
    transform: scale(1.1);
}

.solution-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.solution-card ul {
    list-style: none;
    padding: 0;
    margin: 0 0 1.5rem 0;
}

.solution-card ul li {
    padding: 0.5rem 0;
    position: relative;
    padding-left: 1.5rem;
    color: #555;
}

.solution-card ul li:before {
    content: '•';
    color: var(--accent-color);
    font-size: 1.2rem;
    position: absolute;
    left: 0;
    top: 0.4rem;
}

/* 产品徽章样式 */
.product-badge {
    display: none !important;
}

/* 隐藏筛选后不匹配的产品 */
.product-item.filtered {
    display: none;
}

/* 产品元数据样式 */
.product-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 0.5rem;
}

.product-brand, .product-category {
    font-size: 0.9rem;
    color: #666;
    background: #f0f0f0;
    padding: 0.2rem 0.6rem;
    border-radius: 3px;
}

/* 品牌合作部分样式 */
.brands-section {
    padding: 4rem 0;
    background: white;
}

.brands-section h2 {
    text-align: center;
    margin-bottom: 2.5rem;
    position: relative;
    color: var(--secondary-color);
}

.brands-section h2:after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: var(--accent-color);
    margin: 1rem auto 0;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .hero-swiper {
        height: 400px;
    }
    
    .solutions-grid {
        grid-template-columns: 1fr;
    }
    
    .solution-card {
        padding: 1.5rem;
    }
    
    .solution-icon {
        width: 60px;
        height: 60px;
    }
    
    .solution-icon i {
        font-size: 1.5rem;
    }
}

@media (max-width: 480px) {
    .hero-swiper {
        height: 350px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
    }
    
    .solution-card {
        padding: 1.2rem;
    }
}

/* 产品中心页面布局 */
.products-layout {
    display: flex;
    gap: 30px;
    margin-top: 30px;
}

/* 左侧导航栏样式 */
.products-sidebar {
    width: 280px;
    flex-shrink: 0;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
    overflow: hidden;
}

.sidebar-title {
    background: var(--primary-color);
    color: white;
    padding: 15px 20px;
    font-size: 18px;
    font-weight: 600;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar-category {
    border-bottom: 1px solid #eee;
}

.category-header {
    display: flex;
    align-items: center;
    padding: 15px 20px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: normal;
    --major-color: #1e50ae;
    text-align: left;
    border-spacing: 0;
    font-family: 微软雅黑;
    color: rgb(102, 102, 102);
    font-size: 14px;
    position: relative;
}

.category-header:hover {
    background-color: #f5f5f5;
    color: var(--primary-color);
}

.category-header i:first-child {
    margin-right: 10px;
    font-size: 16px;
    color: var(--primary-color);
    width: 20px;
    text-align: center;
}

.category-header span {
    flex: 1;
    font-weight: 500;
}

.category-header .fa-chevron-down {
    font-size: 14px;
    transition: transform 0.3s;
    transform: rotate(180deg); /* 默认箭头向上 */
    color: #999;
    padding: 5px;
    border-radius: 50%;
    background-color: #f0f0f0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.category-header:hover .fa-chevron-down {
    background-color: #e0e0e0;
    color: var(--primary-color);
}

.sidebar-category.collapsed .fa-chevron-down {
    transform: rotate(0deg); /* 折叠状态下箭头向下 */
}

/* 移除悬停时的自动展开效果 */
.sidebar-category:hover .category-submenu {
    max-height: 500px; /* 保持与默认相同 */
}

.sidebar-category:hover .fa-chevron-down {
    transform: rotate(180deg); /* 保持与默认相同 */
}

.category-submenu {
    max-height: 500px; /* 默认展开，设置足够大的高度 */
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0;
    margin: 0;
    list-style: none;
    background-color: #f9f9f9;
}

.sidebar-category.collapsed .category-submenu {
    max-height: 0; /* 折叠状态下隐藏子菜单 */
}

.category-submenu li {
    padding: 0;
    margin: 0;
}

.category-submenu li a {
    display: block;
    padding: 10px 20px 10px 50px;
    color: #666;
    font-size: 14px;
    text-decoration: none;
    transition: all 0.2s;
    position: relative;
}

.category-submenu li a:before {
    content: '';
    position: absolute;
    left: 30px;
    top: 50%;
    width: 5px;
    height: 5px;
    background-color: #ccc;
    border-radius: 50%;
    transform: translateY(-50%);
    transition: all 0.2s;
}

.category-submenu li a:hover {
    color: var(--primary-color);
    background-color: #f0f0f0;
}

.category-submenu li a:hover:before {
    background-color: var(--primary-color);
}

/* 菜单项激活状态 */
.category-submenu li a.active {
    color: var(--primary-color);
    background-color: #f0f0f0;
    font-weight: 500;
}

.category-submenu li a.active:before {
    background-color: var(--primary-color);
    width: 7px;
    height: 7px;
}

/* 右侧产品展示样式 */
.products-content {
    flex: 1;
}

.product-section {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #eee;
}

.product-section h2 {
    font-size: 22px;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
    position: relative;
}

.product-section h2:after {
    content: '';
    position: absolute;
    bottom: -1px;
    left: 0;
    width: 80px;
    height: 3px;
    background: var(--primary-color);
}

.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 25px;
}

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

.product-item:hover {
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    transform: translateY(-5px);
}

.product-image {
    height: 200px;
    overflow: hidden;
    background-color: #f9f9f9;
    display: flex;
    align-items: center;
    justify-content: center;
}

.product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s;
}

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

.product-details {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.product-details h3 {
    font-size: 18px;
    margin: 0 0 10px;
    color: var(--dark-color);
}

.product-details p {
    color: #666;
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 15px;
    flex: 1;
}

.btn-more {
    display: inline-block;
    padding: 8px 15px;
    background-color: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 4px;
    font-size: 14px;
    transition: all 0.3s;
    align-self: flex-start;
    margin-top: auto;
}

.btn-more:hover {
    background-color: var(--secondary-color);
}

/* 响应式调整 */
@media (max-width: 992px) {
    .products-layout {
        flex-direction: column;
    }
    
    .products-sidebar {
        width: 100%;
        margin-bottom: 30px;
    }
    
    .product-list {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .product-list {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .product-details h3 {
        font-size: 16px;
    }
    
    .product-details p {
        font-size: 13px;
    }
}

@media (max-width: 480px) {
    .product-list {
        grid-template-columns: 1fr;
    }
    
    .product-image {
        height: 180px;
    }
}

/* 响应式侧边栏切换按钮 */
.sidebar-toggle {
    display: none;
    width: 100%;
    padding: 12px 15px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 5px;
    margin-bottom: 15px;
    font-size: 16px;
    cursor: pointer;
    text-align: left;
}

.sidebar-toggle i {
    margin-right: 10px;
}

.sidebar-toggle.active {
    background: var(--secondary-color);
}

@media (max-width: 992px) {
    .sidebar-toggle {
        display: flex;
        align-items: center;
    }
    
    .products-sidebar {
        display: none;
        margin-bottom: 30px;
    }
    
    .products-sidebar.active {
        display: block;
    }
    
    .products-layout {
        flex-direction: column;
    }
    
    .products-sidebar {
        width: 100%;
    }
    
    .product-list {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .product-list {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .product-details h3 {
        font-size: 16px;
    }
    
    .product-details p {
        font-size: 13px;
    }
}

/* 产品欢迎提示 */
.product-welcome {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 30px;
    text-align: center;
}

.welcome-message {
    max-width: 500px;
}

.welcome-message i {
    font-size: 40px;
    color: var(--primary-color);
    margin-bottom: 20px;
    animation: pointLeft 1.5s infinite;
}

.welcome-message h2 {
    font-size: 24px;
    color: var(--dark-color);
    margin-bottom: 15px;
}

.welcome-message p {
    font-size: 16px;
    color: #666;
}

@keyframes pointLeft {
    0%, 100% { transform: translateX(0); }
    50% { transform: translateX(-15px); }
}

/* 空产品类别 */
.empty-category {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    background-color: #f9f9f9;
    border-radius: 8px;
    width: 100%;
    text-align: center;
}

.empty-category i {
    font-size: 30px;
    color: #999;
    margin-bottom: 15px;
}

.empty-category p {
    font-size: 16px;
    color: #666;
}

/* 产品详情页样式 */
.product-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 30px;
}

.product-header h1 {
    font-size: 28px;
    color: var(--primary-color);
    margin-bottom: 25px;
    text-align: center;
}

.product-image {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 30px;
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 3px 10px rgba(0,0,0,0.1);
}

.product-image img {
    max-width: 100%;
    max-height: 400px;
    object-fit: contain;
    transition: transform 0.3s ease;
}

.product-image:hover img {
    transform: scale(1.02);
}

.parameter-image {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    margin-top: 20px;
    text-align: center;
}

.parameter-image img {
    max-width: 100%;
    max-height: 500px;
    object-fit: contain;
}

@media (max-width: 768px) {
    .product-header h1 {
        font-size: 24px;
    }
    
    .product-image {
        padding: 20px;
    }
    
    .product-image img {
        max-height: 300px;
    }
    
    .parameter-image img {
        max-height: 400px;
    }
}

@media (max-width: 480px) {
    .product-header h1 {
        font-size: 22px;
    }
    
    .product-image {
        padding: 15px;
    }
    
    .product-image img {
        max-height: 250px;
    }
    
    .parameter-image img {
        max-height: 300px;
    }
}

/* 产品详情页整体布局 */
.product-detail {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px 0 40px;
}

/* 产品头部区域 */
.product-detail .product-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 40px;
    width: 100%;
}

.product-detail .product-header h1 {
    font-size: 32px;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
    font-weight: 600;
}

/* 产品中心页面的产品图片样式 */
.product-item .product-image {
    height: 200px;
    overflow: hidden;
    background-color: #f9f9f9;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    border-radius: 8px 8px 0 0;
    min-height: auto;
    padding: 0;
    margin-bottom: 0;
}

.product-item .product-image img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    transition: all 0.3s;
    max-height: none;
    max-width: 100%;
}

/* 产品详情页的产品图片样式 */
.product-detail .product-image {
    width: 100%;
    min-height: 500px;
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 40px;
    background-color: #f9f9f9;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    overflow: hidden;
}

.product-detail .product-image img {
    width: auto;
    height: auto;
    max-width: 90%;
    max-height: 500px;
    object-fit: contain;
    transition: transform 0.4s ease;
}

.product-detail .product-image:hover img {
    transform: scale(1.03);
}

/* 产品信息区域 */
.product-detail .product-info {
    margin-bottom: 40px;
}

.product-detail .product-info h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #eee;
}

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

/* 技术参数图片样式 */
.product-detail .technical-parameters {
    margin-top: 40px;
}

.product-detail .technical-parameters h2 {
    font-size: 24px;
    color: var(--primary-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 2px solid #eee;
}

.product-detail .parameter-image {
    width: 100%;
    min-height: 400px;
    background-color: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 3px 12px rgba(0,0,0,0.08);
    margin-top: 20px;
    text-align: center;
    display: flex;
    justify-content: center;
    align-items: center;
}

.product-detail .parameter-image img {
    width: auto;
    height: auto;
    max-width: 95%;
    max-height: 600px;
    object-fit: contain;
}

/* 响应式调整 - 产品中心页 */
@media (max-width: 768px) {
    .product-item .product-image {
        height: 180px;
    }
}

@media (max-width: 480px) {
    .product-item .product-image {
        height: 160px;
    }
}

/* 响应式调整 - 产品详情页 */
@media (max-width: 992px) {
    .product-detail .product-image {
        min-height: 400px;
        padding: 30px;
    }
    
    .product-detail .product-image img {
        max-height: 450px;
    }
    
    .product-detail .parameter-image {
        min-height: 350px;
    }
    
    .product-detail .parameter-image img {
        max-height: 500px;
    }
}

@media (max-width: 768px) {
    .product-detail .product-header h1 {
        font-size: 28px;
    }
    
    .product-detail .product-info h2 {
        font-size: 22px;
    }
    
    .product-detail .product-image {
        min-height: 350px;
        padding: 25px;
    }
    
    .product-detail .product-image img {
        max-height: 400px;
    }
    
    .product-detail .parameter-image {
        min-height: 300px;
        padding: 20px;
    }
    
    .product-detail .parameter-image img {
        max-height: 400px;
    }
}

@media (max-width: 480px) {
    .product-detail .product-header h1 {
        font-size: 24px;
    }
    
    .product-detail .product-info h2 {
        font-size: 20px;
    }
    
    .product-detail .product-image {
        min-height: 300px;
        padding: 20px;
    }
    
    .product-detail .product-image img {
        max-height: 350px;
    }
    
    .product-detail .parameter-image {
        min-height: 250px;
        padding: 15px;
    }
    
    .product-detail .parameter-image img {
        max-height: 350px;
    }
}

/* 品牌筛选样式 */
.brand-filter {
    margin-bottom: 20px;
    padding: 0 15px;
    max-height: 300px;
    overflow-y: auto;
    transition: max-height 0.3s ease, opacity 0.3s ease;
}

.sidebar-title {
    position: relative;
    cursor: pointer;
}

.sidebar-title .fa-chevron-down {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    transition: transform 0.3s ease;
    font-size: 14px;
    color: var(--secondary-color);
}

.sidebar-title.collapsed .fa-chevron-down {
    transform: translateY(-50%) rotate(-90deg);
}

.sidebar-title.collapsed + .brand-filter {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    margin: 0;
    padding-top: 0;
    padding-bottom: 0;
}

.brand-item {
    margin: 8px 0;
    display: flex;
    align-items: center;
}

.brand-checkbox {
    margin-right: 10px;
    cursor: pointer;
}

.brand-item label {
    cursor: pointer;
    font-size: 14px;
    color: var(--secondary-color);
    transition: all 0.2s ease;
}

.brand-item label:hover {
    color: var(--accent-color);
}

/* 隐藏筛选后不匹配的产品 */
.product-item.filtered {
    display: none;
}

.small-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px 18px;
    align-items: stretch;
}
.small-card {
    max-width: 260px;
    min-width: 0;
    padding: 14px 10px;
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
    font-size: 14px;
    margin: 0 auto;
}
.small-card img {
    max-width: 90%;
    height: 110px;
    object-fit: contain;
    margin-bottom: 8px;
}
.small-card .product-info h3 {
    font-size: 16px;
    margin: 8px 0 6px 0;
}
.small-card .product-info p {
    font-size: 13px;
    color: #555;
    margin-bottom: 8px;
}
.small-card .product-meta {
    font-size: 12px;
    color: #888;
    margin-bottom: 2px;
}
.small-card .product-buttons {
    display: flex;
    gap: 8px;
}
@media (max-width: 700px) {
    .small-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .small-card {
        max-width: 100%;
        padding: 10px 4px;
    }
    .small-card img {
        height: 80px;
    }
}

.better-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 28px 24px;
    align-items: stretch;
}
.better-card {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: center;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 2px 12px rgba(0,0,0,0.08);
    max-width: 320px;
    min-width: 0;
    min-height: 370px;
    height: 100%;
    padding: 20px 16px 16px 16px;
    transition: box-shadow 0.2s;
    margin: 0 auto;
    position: relative;
}
.better-card:hover {
    box-shadow: 0 6px 24px rgba(0,0,0,0.13);
}
.better-card img {
    max-width: 90%;
    max-height: 140px;
    object-fit: contain;
    margin-bottom: 12px;
    display: block;
}
.better-card .product-info {
    flex: 1 1 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
}
.better-card .product-info h3 {
    font-size: 17px;
    margin: 8px 0 6px 0;
    text-align: center;
    font-weight: 600;
}
.better-card .product-info p {
    font-size: 13px;
    color: #555;
    margin-bottom: 10px;
    text-align: center;
    min-height: 38px;
}
.better-card .product-meta {
    font-size: 12px;
    color: #888;
    margin-bottom: 2px;
    text-align: center;
}
.better-card .product-buttons {
    width: 100%;
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-top: auto;
}
@media (max-width: 900px) {
    .better-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .better-card {
        max-width: 100%;
        min-height: 320px;
        padding: 12px 4px;
    }
    .better-card img {
        max-height: 90px;
    }
}

.pro-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px 28px;
    align-items: stretch;
    justify-items: center;
}
.pro-card {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    background: #fff;
    border-radius: 18px;
    box-shadow: 0 2px 16px rgba(0,0,0,0.10);
    width: 100%;
    max-width: 340px;
    min-width: 0;
    height: 390px;
    padding: 0;
    position: relative;
    overflow: hidden;
    transition: box-shadow 0.2s;
}
.pro-card:hover {
    box-shadow: 0 8px 32px rgba(0,0,0,0.16);
}
.pro-img-area {
    width: 100%;
    height: 160px;
    background: #f7f8fa;
    display: flex;
    align-items: center;
    justify-content: center;
    border-top-left-radius: 18px;
    border-top-right-radius: 18px;
}
.pro-img-area img {
    max-width: 90%;
    max-height: 130px;
    object-fit: contain;
    display: block;
}
.pro-divider {
    width: 90%;
    height: 1px;
    background: #e5e6eb;
    margin: 0 auto;
}
.pro-content {
    flex: 1 1 auto;
    width: 100%;
    padding: 10px 18px 0 18px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    text-align: center;
}
.pro-content h3 {
    font-size: 17px;
    margin: 8px 0 6px 0;
    font-weight: 600;
}
.pro-content p {
    font-size: 13px;
    color: #555;
    margin-bottom: 8px;
    min-height: 36px;
}
.pro-content .product-meta {
    font-size: 12px;
    color: #888;
    margin-bottom: 2px;
}
.pro-btn-area {
    width: 100%;
    display: flex;
    justify-content: center;
    align-items: flex-end;
    padding: 0 0 28px 0;
    margin-top: auto;
}
@media (max-width: 900px) {
    .pro-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    .pro-card {
        max-width: 100%;
        height: 320px;
    }
    .pro-img-area {
        height: 110px;
    }
}