/* ==================== 基础样式 ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #2563eb;
    --primary-dark: #1e40af;
    --secondary-color: #64748b;
    --text-color: #1e293b;
    --text-light: #64748b;
    --bg-color: #f8fafc;
    --white: #ffffff;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --transition: all 0.3s ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
}

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

a {
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
}

a[target="_blank"] {
    color: var(--primary-color);
    font-weight: 500;
}

a[target="_blank"]::after {
    content: ' ↗';
    font-size: 0.8em;
}

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

/* ==================== Logo样式 ==================== */
.logo a {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-image-wrapper {
    width: 200px;
    height: 100px;
    border-radius: 8px;
    position: relative;
    overflow: hidden;
    flex-shrink: 0;
}

.logo-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.logo-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: #666;
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 1.5rem;
    font-weight: bold;
}

.logo-text {
    font-size: 40px;
    font-weight: bold;
    color: #333;
}

/* ==================== Banner轮播样式 ==================== */
.banner-slider {
    width: 100%;
    position: relative;
    overflow: hidden;
    margin-bottom: 0;
    padding-bottom: 0;
}

.banner-container {
    width: 100%;
    position: relative;
    aspect-ratio: 1200 / 400;
    max-height: 400px;
    overflow: hidden;
}

.banner-slide {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 0.5s ease;
    overflow: hidden;
}

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

.banner-slide img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.banner-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 30px;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.7));
    color: var(--white);
}

.banner-overlay h2 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.banner-overlay p {
    font-size: 1rem;
    opacity: 0.9;
}

.banner-controls {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.banner-prev,
.banner-next {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: none;
    color: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.banner-indicators {
    display: flex;
    gap: 10px;
}

.banner-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.5);
    border: none;
    cursor: pointer;
    transition: background 0.3s ease;
}

.banner-indicator.active {
    background: var(--white);
}

/* ==================== 搜索框样式 ==================== */
.filter-search-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 15px;
}

.search-box {
    position: relative;
    width: 250px;
}

.search-box input {
    width: 100%;
    padding: 10px 15px 10px 40px;
    border: 1px solid var(--border-color);
    border-radius: 25px;
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.search-box input:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
}

/* ==================== 页面标题 ==================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 60px 0;
    text-align: center;
}

.page-header h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
}

.page-header p {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* ==================== 公司简介模块 ==================== */
.about-section {
    padding: 60px 0;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: flex-start;
}

.about-text h3 {
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 15px;
    line-height: 1.8;
}

.about-image-wrapper {
    width: 100%;
    height: 350px;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.about-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 1;
    transition: opacity 0.3s ease;
}

.about-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

/* ==================== 热门产品模块 ==================== */
.hot-products-section {
    padding: 60px 0;
    background: var(--light-bg);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 30px;
}

.section-header h3 {
    margin-bottom: 0;
}

.section-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* ==================== 优势展示模块 ==================== */
.advantages-section {
    padding: 60px 0;
}

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

.advantage-item {
    text-align: center;
    padding: 30px 20px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    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 {
    font-size: 3rem;
    margin-bottom: 15px;
}

.advantage-item h4 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.advantage-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ==================== 新闻动态模块 ==================== */
.news-section {
    padding: 60px 0;
    background: var(--light-bg);
}

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

.news-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    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-wrapper {
    width: 100%;
    height: 200px;
    position: relative;
    overflow: hidden;
}

.news-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.news-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.news-info {
    padding: 20px;
}

.news-date {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
    display: block;
}

.news-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.news-summary {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 15px;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

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

/* ==================== 图片容器和占位符 ==================== */
.product-image-wrapper {
    width: 100%;
    height: 240px;
    position: relative;
    overflow: hidden;
}

.product-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: 10px;
}

.placeholder-text {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hot-product-icon-wrapper {
    width: 80px;
    height: 80px;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
    flex-shrink: 0;
}

.hot-product-icon {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.hot-product-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 2rem;
}

.product-detail-image-wrapper {
    width: 100%;
    height: 400px;
    position: relative;
    overflow: hidden;
    border-radius: 12px;
}

.product-detail-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.product-detail-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.product-detail-placeholder .placeholder-icon {
    font-size: 5rem;
}

/* ==================== 导航栏 ==================== */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 20px;
}

.logo h1 {
    font-size: 1.5rem;
    color: var(--primary-color);
    font-weight: 700;
}

.nav-links {
    display: flex;
    gap: 30px;
}

.nav-links a {
    color: var(--text-color);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
}

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

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

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



/* ==================== 产品列表 ==================== */
.products-section {
    padding: 60px 0;
}

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

.section-header h3 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.filter-bar {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid var(--border-color);
    background: var(--white);
    color: var(--text-color);
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white);
}

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

/* ==================== 产品卡片 ==================== */
.product-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    cursor: pointer;
}

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

.product-info {
    padding: 20px;
}

.product-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 10px;
}

.product-title {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-color);
}

.product-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 15px;
    line-height: 1.5;
}

.product-price {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-color);
}

.product-price span {
    font-size: 0.9rem;
    font-weight: 400;
}

/* ==================== 热门产品推荐 ==================== */
.hot-products {
    padding: 60px 0;
    background: var(--white);
}

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

.hot-product-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 12px;
    transition: var(--transition);
    position: relative;
}

.hot-product-item:hover {
    background: #f1f5f9;
}

.hot-product-icon {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    color: var(--white);
}

.hot-product-info {
    flex: 1;
}

.hot-product-link {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-color);
    display: block;
    margin-bottom: 8px;
}

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

.hot-product-desc {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 8px;
}

.hot-product-price {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--primary-color);
}

.hot-product-price span {
    font-weight: 400;
}

.hot-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    padding: 5px 12px;
    background: #f59e0b;
    color: var(--white);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* ==================== 合作伙伴 ==================== */
.partners {
    padding: 60px 0;
    background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
}

.partner-link {
    text-decoration: none;
}

.partner-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.partner-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.partner-name {
    color: var(--text-color);
    font-weight: 500;
    text-align: center;
}

/* ==================== 产品详情 ==================== */
.detail-section {
    padding: 40px 0 60px;
}

.breadcrumb {
    margin-bottom: 30px;
    color: var(--text-light);
}

.breadcrumb a {
    color: var(--primary-color);
}

.breadcrumb a:hover {
    text-decoration: underline;
}

.breadcrumb span {
    margin: 0 10px;
}

.product-detail {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    margin-bottom: 60px;
}

.product-detail-info {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.product-detail-info h2 {
    font-size: 2rem;
    color: var(--text-color);
}

.product-detail-category {
    display: inline-block;
    padding: 6px 16px;
    background: var(--bg-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    width: fit-content;
}

.product-detail-price {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
}

.product-detail-desc {
    color: var(--text-light);
    line-height: 1.8;
}

.product-detail-desc a {
    color: var(--primary-color);
    font-weight: 500;
}

.product-specs {
    background: var(--bg-color);
    padding: 20px;
    border-radius: 8px;
}

.product-specs h4 {
    margin-bottom: 15px;
    color: var(--text-color);
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid var(--border-color);
}

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

.spec-label {
    color: var(--text-light);
}

.spec-value {
    font-weight: 500;
    color: var(--text-color);
}

.product-reference {
    padding: 15px;
    background: #fef3c7;
    border-radius: 8px;
    border-left: 4px solid #f59e0b;
    font-size: 0.9rem;
    color: var(--text-color);
}

.product-reference a {
    color: var(--primary-color);
    font-weight: 500;
}

.btn-primary {
    padding: 15px 40px;
    background: var(--primary-color);
    color: var(--white);
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    width: fit-content;
}

.btn-primary:hover {
    background: var(--primary-dark);
}

/* ==================== 相关产品 ==================== */
.related-products {
    margin-top: 60px;
}

.related-products h3 {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: var(--text-color);
}

/* ==================== 通用页面样式 ==================== */
.page-header {
    text-align: center;
    padding: 40px 0;
}

.page-header h2 {
    font-size: 2.5rem;
    margin-bottom: 15px;
    color: var(--text-color);
}

.page-header p {
    color: var(--text-light);
    font-size: 1.1rem;
}

/* ==================== 关于我们页面 ==================== */
.about-section {
    padding: 40px 0 60px;
}

.about-content {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.about-item {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.about-item h3 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.about-item p {
    color: var(--text-light);
    line-height: 1.8;
}

.timeline {
    list-style: none;
}

.timeline li {
    padding: 15px 0;
    border-bottom: 1px solid var(--border-color);
    position: relative;
    padding-left: 100px;
}

.timeline li:last-child {
    border-bottom: none;
}

.timeline .year {
    position: absolute;
    left: 0;
    top: 15px;
    font-weight: 700;
    color: var(--primary-color);
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.honor-item {
    text-align: center;
    padding: 25px;
    background: var(--bg-color);
    border-radius: 8px;
}

.honor-icon {
    font-size: 2.5rem;
    margin-bottom: 15px;
}

.honor-item h4 {
    margin-bottom: 8px;
    color: var(--text-color);
}

.honor-item p {
    font-size: 0.9rem;
}

.media-list {
    list-style: none;
}

.media-list li {
    padding: 10px 0;
    color: var(--text-light);
}

.media-list a {
    color: var(--primary-color);
    font-weight: 500;
}

/* ==================== 联系方式页面 ==================== */
.contact-section {
    padding: 40px 0 60px;
}

.service-intro {
    background: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 100%);
    color: white;
    padding: 30px;
    border-radius: 16px;
    margin-bottom: 40px;
}

.service-intro p {
    font-size: 1.1rem;
    line-height: 1.8;
    text-align: justify;
}

.service-intro .highlight {
    color: #d4a574;
    font-weight: 600;
    padding: 2px 6px;
    background: rgba(212, 165, 116, 0.2);
    border-radius: 4px;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
}

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

.contact-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 20px;
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(30, 58, 95, 0.1);
}

.contact-icon {
    font-size: 1.8rem;
    width: 55px;
    height: 55px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5e6d3, white);
    border-radius: 12px;
    border: 2px solid #d4a574;
}

.contact-item h4 {
    margin-bottom: 5px;
    color: #1e3a5f;
    font-weight: 600;
}

.contact-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 3px 0;
}

.contact-form {
    background: var(--white);
    padding: 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
}

.contact-form h3 {
    margin-bottom: 20px;
    color: var(--text-color);
}

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

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

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

.captcha-row {
    display: flex;
    align-items: center;
    gap: 10px;
}

.captcha-text {
    padding: 12px 16px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-color);
    min-width: 100px;
    text-align: center;
    user-select: none;
}

.captcha-group input {
    flex: 1;
    max-width: 150px;
}

.captcha-refresh {
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    background: var(--white);
    font-size: 1.2rem;
    cursor: pointer;
    transition: var(--transition);
}

.captcha-refresh:hover {
    border-color: var(--primary-color);
    background: var(--primary-color);
    color: var(--white);
}

.map-section {
    margin-top: 50px;
    padding: 30px;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid rgba(30, 58, 95, 0.1);
}

.map-section h3 {
    font-size: 1.3rem;
    color: #1e3a5f;
    margin-bottom: 20px;
    font-weight: 600;
}

.map-container {
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.map-container iframe {
    border-radius: 12px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.form-success {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    padding: 40px;
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    border-radius: 12px;
    border: 2px solid #28a745;
    animation: fadeIn 0.3s ease;
}

.form-success .success-icon {
    font-size: 48px;
    color: #28a745;
    margin-bottom: 16px;
}

.form-success p {
    font-size: 1.1rem;
    color: #155724;
    font-weight: 500;
    text-align: center;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ==================== 新闻动态页面 ==================== */
.news-section {
    padding: 40px 0 60px;
}

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

.news-item {
    background: var(--white);
    padding: 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    position: relative;
}

.news-date {
    position: absolute;
    top: 25px;
    right: 25px;
    font-size: 0.9rem;
    color: var(--text-light);
}

.news-item h3 {
    margin-bottom: 10px;
}

.news-item h3 a {
    color: var(--text-color);
    font-size: 1.2rem;
}

.news-item h3 a:hover {
    color: var(--primary-color);
}

.news-item p {
    color: var(--text-light);
    margin-bottom: 10px;
}

.news-category {
    display: inline-block;
    padding: 4px 12px;
    background: var(--bg-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

/* ==================== 页脚 ==================== */
.footer {
    background: var(--text-color);
    color: var(--white);
    padding: 60px 0 20px;
}

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

.footer-section h4 {
    font-size: 1.2rem;
    margin-bottom: 20px;
}

.footer-section p {
    color: #94a3b8;
    margin-bottom: 10px;
}

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

.footer-section ul a {
    color: #94a3b8;
}

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

.footer-link {
    display: inline-block;
    margin-top: 10px;
    color: var(--primary-color) !important;
    font-weight: 500;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #334155;
    color: #94a3b8;
}

/* ==================== 关于页面样式 ==================== */
:root {
    --gold-color: #d4a574;
    --gold-light: #f5e6d3;
    --gold-dark: #b8860b;
    --about-blue: #1e3a5f;
    --about-blue-light: #2d5a87;
    --about-gradient: linear-gradient(135deg, #1e3a5f 0%, #2d5a87 50%, #1e3a5f 100%);
}

.about-hero {
    background: var(--about-gradient);
    padding: 80px 0;
    text-align: center;
    color: white;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M54.627 0l.83.828-2.83 2.83-.83-.828 2.83-2.83zM5.373 0l-.83.828L7.373 3.66l.83-.828L4.543 0zM60 54.627l-.83-.828-2.83 2.83.83.828 2.83-2.83zM0 54.627l.83-.828L3.66 57.46l-.83.828L0 55.437zM48.97 6.34l2.122 2.122-4.243 4.243-2.122-2.122 4.243-4.243zM11.03 6.34L8.908 8.46 4.665 4.217 6.787 2.1l4.243 4.24zM48.97 53.66l-2.122 2.122 4.243 4.243 2.122-2.122-4.243-4.243zM11.03 53.66l2.122 2.122 4.243-4.243-2.122-2.122-4.243 4.243z' fill='%23d4a574' fill-opacity='0.1' fill-rule='evenodd'/%3E%3C/svg%3E");
    opacity: 0.5;
}

.about-hero .hero-content {
    position: relative;
    z-index: 1;
}

.about-hero h1 {
    font-size: 2.5rem;
    margin-bottom: 16px;
    font-weight: 700;
    letter-spacing: 2px;
}

.about-hero p {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 40px;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 60px;
    flex-wrap: wrap;
}

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

.stat-value {
    display: block;
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--gold-color);
    line-height: 1.2;
}

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

.about-main {
    padding: 60px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 40px;
}

.section-header h2 {
    font-size: 2rem;
    color: var(--about-blue);
    margin-bottom: 15px;
    font-weight: 600;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--gold-color), var(--about-blue));
    margin: 0 auto;
    border-radius: 2px;
}

.company-intro {
    margin-bottom: 80px;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 40px;
    align-items: center;
}

.intro-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 16px;
    text-align: justify;
}

.intro-image-wrapper {
    height: 300px;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    position: relative;
}

.intro-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.5s ease;
}

.intro-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8ec 100%);
}

.development-history {
    margin-bottom: 80px;
    padding: 40px 0;
    background: linear-gradient(180deg, #fafbfc 0%, white 100%);
}

.timeline-container {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding-left: 40px;
}

.timeline-line {
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(180deg, var(--gold-color), var(--about-blue));
    border-radius: 2px;
}

.timeline-items {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.timeline-item {
    display: flex;
    gap: 25px;
    position: relative;
}

.timeline-marker {
    flex-shrink: 0;
    width: 60px;
    height: 60px;
    background: white;
    border: 3px solid var(--gold-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 1;
    box-shadow: 0 4px 15px rgba(212, 165, 116, 0.3);
}

.marker-icon {
    font-size: 1.5rem;
}

.timeline-content {
    flex: 1;
    background: white;
    padding: 25px 30px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border-left: 4px solid var(--about-blue);
}

.timeline-year {
    display: inline-block;
    background: linear-gradient(135deg, var(--gold-color), #e8c8a0);
    color: white;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 10px;
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--about-blue);
    margin-bottom: 8px;
}

.timeline-content p {
    color: var(--text-light);
    line-height: 1.6;
}

.company-honors {
    margin-bottom: 80px;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 25px;
}

.honor-card {
    background: white;
    border-radius: 16px;
    padding: 30px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 1px solid rgba(30, 58, 95, 0.1);
}

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

.honor-icon-wrapper {
    width: 80px;
    height: 80px;
    margin: 0 auto 20px;
    background: linear-gradient(135deg, var(--gold-light), white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid var(--gold-color);
}

.honor-icon {
    font-size: 2.5rem;
}

.honor-content h3 {
    font-size: 1.15rem;
    color: var(--about-blue);
    margin-bottom: 10px;
    font-weight: 600;
}

.honor-content p {
    font-size: 0.9rem;
    color: var(--text-light);
    line-height: 1.6;
}

.media-coverage {
    margin-bottom: 60px;
}

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

.media-item {
    display: flex;
    align-items: center;
    gap: 20px;
    background: white;
    padding: 20px 25px;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-decoration: none;
    color: inherit;
    transition: var(--transition);
    border-left: 4px solid var(--about-blue);
}

.media-item:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--gold-color);
}

.media-icon {
    font-size: 2rem;
}

.media-info h4 {
    font-size: 1rem;
    color: var(--about-blue);
    margin-bottom: 4px;
    font-weight: 600;
}

.media-info p {
    font-size: 0.85rem;
    color: var(--text-light);
}

.media-arrow {
    margin-left: auto;
    color: var(--gold-color);
    font-weight: bold;
}

/* ==================== 响应式设计 ==================== */
@media (max-width: 768px) {
    .navbar .container {
        flex-direction: column;
        gap: 15px;
    }

    .nav-links {
        gap: 15px;
    }

    .product-detail {
        grid-template-columns: 1fr;
    }

    .product-detail-image-wrapper {
        height: 300px;
    }

    .filter-bar {
        justify-content: center;
    }

    .hot-product-item {
        flex-direction: column;
        text-align: center;
    }

    .hot-badge {
        top: 20px;
        right: 20px;
    }

    .contact-content {
        grid-template-columns: 1fr;
    }

    .timeline li {
        padding-left: 0;
    }

    .timeline .year {
        position: static;
        margin-bottom: 5px;
    }

    .logo-text {
        font-size: 32px;
    }

    .logo-image-wrapper {
        width: 120px;
        height: 60px;
    }

    .banner-container {
        aspect-ratio: 1200 / 400;
        max-height: 250px;
    }

    .banner-overlay h2 {
        font-size: 1.5rem;
    }

    .banner-overlay p {
        font-size: 0.9rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .advantages-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

@media (max-width: 480px) {
    .banner-container {
        aspect-ratio: 1200 / 400;
        max-height: 200px;
    }

    .banner-overlay {
        padding: 15px;
    }

    .banner-overlay h2 {
        font-size: 1.2rem;
    }

    .banner-overlay p {
        font-size: 0.8rem;
        display: none;
    }

    .banner-prev,
    .banner-next {
        width: 30px;
        height: 30px;
        font-size: 1rem;
    }

    .filter-search-container {
        flex-direction: column;
        align-items: stretch;
    }

    .search-box {
        width: 100%;
    }

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

    .page-header h2 {
        font-size: 2rem;
    }

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

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }
}

/* ==================== 新闻详情页 ==================== */
.news-detail-section {
    padding: 60px 0;
}

.breadcrumb {
    margin-bottom: 30px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.breadcrumb a {
    color: var(--text-secondary);
}

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

.news-detail {
    max-width: 900px;
    margin: 0 auto;
}

.news-detail .news-meta {
    margin-bottom: 20px;
    display: flex;
    gap: 15px;
    align-items: center;
}

.news-detail .news-date,
.news-detail .news-category {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.news-detail .news-title {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--text-primary);
    line-height: 1.4;
}

.news-detail .news-image-wrapper {
    width: 100%;
    height: 450px;
    margin-bottom: 40px;
    border-radius: 12px;
    overflow: hidden;
    position: relative;
}

.news-detail .news-detail-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.news-detail .news-detail-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--white);
}

.news-detail .news-content {
    font-size: 1.05rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.news-detail .news-content p {
    margin-bottom: 20px;
}

.news-detail .news-content h2 {
    font-size: 1.4rem;
    font-weight: 600;
    margin: 40px 0 20px;
    color: var(--text-primary);
}

.news-detail .news-footer {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.news-detail .news-nav {
    margin-top: 40px;
}

/* ==================== 新闻分类标签 ==================== */
.news-category-badge {
    display: inline-block;
    padding: 5px 12px;
    background: var(--bg-color);
    color: var(--primary-color);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.news-title-link {
    color: var(--text-primary);
    transition: color 0.3s ease;
}

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