/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Microsoft YaHei", "Segoe UI", sans-serif;
}

body {
    color: #333;
    line-height: 1.6;
    background-color: #f8f9fa;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

a {
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
}

ul {
    list-style: none;
}

.btn {
    display: inline-block;
    padding: 10px 25px;
    background-color: #1a6fb0;
    color: white;
    border-radius: 4px;
    font-weight: bold;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
}

.btn:hover {
    background-color: #0d5a9d;
    transform: translateY(-2px);
}

section {
    padding: 70px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 50px;
    position: relative;
}

.section-title h2 {
    font-size: 32px;
    color: #1a6fb0;
    margin-bottom: 15px;
}

.section-title p {
    color: #666;
    max-width: 600px;
    margin: 0 auto;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background: #1a6fb0;
    margin: 15px auto 0;
}

/* 头部样式 */
header {
    background-color: white;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

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

.logo {
    display: flex;
    align-items: center;
}

.logo img {
    height: 50px;
    width: 50px;
    margin-right: 10px;
}

.logo h1 {
    font-size: 24px;
    color: #1a6fb0;
}

.nav-menu {
    display: flex;
}

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    font-weight: 500;
    color: #333;
    padding: 5px 0;
    position: relative;
}

.nav-menu a:hover {
    color: #1a6fb0;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    background: #1a6fb0;
    left: 0;
    bottom: 0;
    transition: width 0.3s ease;
}

.nav-menu a:hover::after {
    width: 100%;
}

.mobile-toggle {
    display: none;
    font-size: 24px;
    cursor: pointer;
}

/* Banner样式 */
.banner {
    background: linear-gradient(rgba(26, 111, 176, 0.8), rgba(26, 111, 176, 0.9)), url('https://images.unsplash.com/photo-1585435557343-3b092031d5ad?ixlib=rb-1.2.1&auto=format&fit=crop&w=1350&q=80');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 180px 0 100px;
    margin-top: 80px;
}

.banner h2 {
    font-size: 42px;
    margin-bottom: 20px;
}

.banner p {
    font-size: 18px;
    max-width: 700px;
    margin: 0 auto 30px;
}

/* 关于我们 */
.about-content {
    display: flex;
    align-items: center;
    gap: 50px;
}

.about-img {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.about-img img {
    width: 100%;
    height: 600px;
    display: block;
    object-fit: cover;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 28px;
    color: #1a6fb0;
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
    color: #555;
}

/* 产品展示 */
.products {
    background-color: #f0f7ff;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
}

.product-img {
    height: 200px;
    overflow: hidden;
}

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

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

.product-info {
    padding: 20px;
}

.product-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
    color: #1a6fb0;
}

.product-info p {
    color: #666;
    font-size: 14px;
    margin-bottom: 15px;
}

/* 新闻动态 */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 30px;
}

.news-card {
    background: white;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

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

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

.news-content {
    padding: 20px;
}

.news-date {
    color: #888;
    font-size: 14px;
    margin-bottom: 10px;
}

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

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

/* 联系我们 */
.contact {
    background-color: #1a6fb0;
    color: white;
}

.contact .section-title h2,
.contact .section-title p {
    color: white;
}

.contact .section-title::after {
    background: white;
}

.contact-content {
    display: flex;
    gap: 50px;
}

.contact-info {
    flex: 1;
}

.contact-info h3 {
    font-size: 24px;
    margin-bottom: 20px;
}

.contact-details {
    margin-bottom: 30px;
}

.contact-details p {
    margin-bottom: 10px;
    display: flex;
    align-items: center;
}

.contact-details i {
    margin-right: 10px;
    width: 20px;
}

.contact-form {
    flex: 1;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
}

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

.contact-form .btn {
    background: white;
    color: #1a6fb0;
}

.contact-form .btn:hover {
    background: #f0f0f0;
}

/* 地图样式 */
.map {
    flex: 1;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    cursor: pointer;
    transition: transform 0.3s ease;
}

.map:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.15);
}

.map img {
    width: 100%;
    height: 225px;
    display: block;
    object-fit: cover;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    animation: fadeIn 0.3s ease;
    overflow: hidden;
}

.modal-content {
    margin: auto;
    display: block;
    max-width: 90%;
    max-height: 90%;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-radius: 4px;
    animation: zoomIn 0.3s ease;
}

.close {
    position: absolute;
    top: 15px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
    z-index: 1001;
    transition: color 0.2s;
}

.close:hover {
    color: #ccc;
}

/* 加载动画 */
.loader {
    display: none;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 50px;
    height: 50px;
    border: 5px solid #f3f3f3;
    border-top: 5px solid #3498db;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    z-index: 1002;
}

/* 动画定义 */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes zoomIn {
    from {
        transform: translate(-50%, -50%) scale(0.5);
        opacity: 0;
    }
    to {
        transform: translate(-50%, -50%) scale(1);
        opacity: 1;
    }
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* 页脚 */
footer {
    background: #0d5a9d;
    color: white;
    padding: 50px 0 20px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    margin-bottom: 30px;
}

.footer-column {
    flex: 1;
    padding: 0 15px;
}

.footer-column h3 {
    font-size: 18px;
    margin-bottom: 20px;
    position: relative;
    padding-bottom: 10px;
}

.footer-column h3::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: 0;
    width: 40px;
    height: 2px;
    background: white;
}

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

.footer-column ul li a:hover {
    color: #a8d2ff;
    padding-left: 5px;
}

.copyright {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 14px;
}

/* 备案信息样式 */
.beian-info {
    margin-top: 15px;
    font-size: 13px;
}

.beian-info a {
    color: rgba(255, 255, 255, 0.8);
    transition: color 0.3s;
}

.beian-info a:hover {
    color: white;
    text-decoration: underline;
}

.beian-separator {
    margin: 0 10px;
    color: rgba(255, 255, 255, 0.5);
}

.beian-gongan {
display: inline-flex;
align-items: center;
vertical-align: middle;
}

/* 响应式设计 */
@media (max-width: 992px) {
    .about-content {
        flex-direction: column;
    }

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

    .footer-content {
        flex-wrap: wrap;
    }

    .footer-column {
        flex: 0 0 50%;
        margin-bottom: 30px;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 80px;
        left: 0;
        width: 100%;
        background: white;
        flex-direction: column;
        padding: 20px;
        box-shadow: 0 5px 10px rgba(0, 0, 0, 0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu li {
        margin: 10px 0;
    }

    .mobile-toggle {
        display: block;
    }

    .banner h2 {
        font-size: 32px;
    }

    .banner p {
        font-size: 16px;
    }

    .footer-column {
        flex: 0 0 100%;
    }

    .modal-content {
        max-width: 95%;
        max-height: 95%;
    }

    .close {
        top: 10px;
        right: 20px;
        font-size: 30px;
    }
}

@media (max-width: 576px) {
    .product-grid,
    .news-grid {
        grid-template-columns: 1fr;
    }

    .banner {
        padding: 150px 0 80px;
    }

    .modal-content {
        max-width: 95%;
        max-height: 95%;
    }

    .close {
        right: 20px;
        font-size: 30px;
    }

    .beian-info {
        display: flex;
        flex-direction: column;
        gap: 5px;
    }

    .beian-separator {
        display: none;
    }
}