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

:root {
    --primary-color: #1E90FF;
    --secondary-color: #4169E1;
    --accent-color: #87CEEB;
    --text-dark: #333;
    --text-light: #666;
    --bg-light: #f5f5f5;
    --white: #fff;
    --shadow: 0 2px 10px rgba(0,0,0,0.1);
}

body {
    font-family: 'Microsoft YaHei', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

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

/* 头部导航 */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

.header .container {
    padding: 0;
    max-width: 100%;
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 30px;
}

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

.logo a {
    display: flex;
    align-items: center;
    text-decoration: none;
}

.logo-img {
    height: 60px;
    width: auto;
}

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

/* 移动端菜单按钮 */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 24px;
    color: var(--primary-color);
    cursor: pointer;
    padding: 5px;
}

.nav-menu a {
    padding: 10px 0;
    font-size: 18px;
    transition: color 0.3s;
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s;
}

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

/* 轮播图区域 */
.hero-section {
    position: relative;
    height: 100vh;
    min-height: 600px;
    overflow: hidden;
}

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

.banner-slide {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 0.5s;
    background-size: contain;
    background-repeat: no-repeat;
    background-position: center;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.banner-content {
    text-align: center;
    color: var(--white);
    padding: 40px 60px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
}

.banner-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.banner-content p {
    font-size: 24px;
}

.banner-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
}

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

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

/* 底部统计数字长条 */
.stats-bar {
    background: linear-gradient(90deg, #0066CC 0%, #0099DD 25%, #00BB77 50%, #00CC66 75%, #00DD55 100%);
    padding: 25px 40px;
    margin-top: -2px;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 8px;
}

.stats-bar .stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.stats-bar .stat-item {
    text-align: center;
    padding: 10px;
}

.stats-bar .stat-number {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 5px;
    color: #fff;
    font-family: 'Arial Black', 'Microsoft YaHei', sans-serif;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.stats-bar .stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.95);
    font-weight: 500;
}

/* 核心业务区域 */
.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 35px;
}

.section-title h2 {
    font-size: 36px;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.section-title p {
    font-size: 18px;
    color: var(--text-light);
}

.business-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
}

.business-card {
    background: var(--white);
    padding: 40px 30px;
    text-align: center;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.business-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.business-icon {
    font-size: 60px;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.business-card h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.business-card p {
    color: var(--text-light);
}

/* 核心业务英雄区域 */
.business-hero {
    position: relative;
    min-height: 500px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 80px;
}

.business-hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    transition: background-image 0.5s ease;
}

.business-circle-container {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.ripple-container {
    position: absolute;
    width: 450px;
    height: 450px;
    border-radius: 50%;
    pointer-events: none;
    z-index: 2;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.ripple {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 50%;
    border: 3px solid rgba(255, 255, 255, 0.7);
    animation: ripple-expand 4s infinite ease-out;
}

.ripple-1 {
    animation-delay: 0s;
}

.ripple-2 {
    animation-delay: 1.3s;
}

.ripple-3 {
    animation-delay: 2.6s;
}

@keyframes ripple-expand {
    0% {
        transform: scale(1);
        opacity: 0.8;
    }
    50% {
        opacity: 0.5;
    }
    100% {
        transform: scale(1.8);
        opacity: 0;
    }
}

.business-circle-mask {
    width: 450px;
    height: 450px;
    border-radius: 50%;
    background: rgba(30, 144, 255, 0.75);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 40px;
    position: relative;
    z-index: 1;
    box-sizing: border-box;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.business-circle-content {
    text-align: center;
    color: white;
}

.business-circle-content h2 {
    font-size: 36px;
    margin-bottom: 20px;
    font-weight: bold;
}

.business-circle-content p {
    font-size: 16px;
    line-height: 1.8;
    margin-bottom: 25px;
}

.business-circle-features {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
}

.business-circle-feature {
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 8px 16px;
    border-radius: 25px;
    font-size: 14px;
}

.business-circle-content .btn {
    background: white;
    color: var(--primary-color);
    border: none;
    padding: 12px 30px;
    font-size: 14px;
    border-radius: 30px;
    margin-top: 25px;
    transition: all 0.3s;
}

.business-circle-content .btn:hover {
    background: var(--accent-color);
    color: white;
    transform: translateY(-3px);
}

.business-products-grid {
    display: flex;
    gap: 30px;
    overflow-x: auto;
    scrollbar-width: thin;
    scrollbar-color: rgba(255,255,255,0.5) transparent;
    padding: 20px 0;
    margin-top: 50px;
    position: relative;
    z-index: 1;
    -ms-overflow-style: none;
    justify-content: center;
}

.business-products-grid::-webkit-scrollbar {
    display: none;
}

.business-product-card {
    flex: 0 0 auto;
    opacity: 0;
    transform: translateY(30px);
}

.business-product-card.animate {
    animation: productSlideIn 0.6s ease-out forwards;
}

.business-product-card.animate:nth-child(1) { animation-delay: 0.1s; }
.business-product-card.animate:nth-child(2) { animation-delay: 0.2s; }
.business-product-card.animate:nth-child(3) { animation-delay: 0.3s; }
.business-product-card.animate:nth-child(4) { animation-delay: 0.4s; }
.business-product-card.animate:nth-child(5) { animation-delay: 0.5s; }
.business-product-card.animate:nth-child(6) { animation-delay: 0.6s; }
.business-product-card.animate:nth-child(7) { animation-delay: 0.7s; }
.business-product-card.animate:nth-child(8) { animation-delay: 0.8s; }

@keyframes productSlideIn {
    0% {
        opacity: 0;
        transform: translateY(30px);
    }
    100% {
        opacity: 1;
        transform: translateY(0);
    }
}

.business-product-image {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
}

.business-products {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 25px;
    margin-top: 40px;
}

.business-product-card {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    transition: transform 0.3s, box-shadow 0.3s;
}

.business-product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.25);
}

.business-product-image {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.business-product-info {
    padding: 25px;
}

.business-product-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
    color: var(--text-dark);
}

.business-product-info p {
    color: var(--text-light);
    font-size: 14px;
    margin-bottom: 15px;
}

.business-product-features {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.business-product-feature {
    background: var(--primary-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
}

/* 关于我们预览 */
.about-preview {
    background: #fff;
    padding: 60px 0;
    width: 100%;
    box-sizing: border-box;
    overflow: hidden;
}

.about-content-wrapper {
    width: 100%;
    padding-right: 20px;
    padding-left: 30px;
    box-sizing: border-box;
}

.about-content {
    display: flex;
    gap: 50px;
    align-items: flex-start;
    width: 100%;
}

.about-text {
    flex: 1.5;
}

.about-image {
    flex: 1;
}

/* 左右滑动动画 */
.slide-in-left {
    opacity: 0;
    transform: translateX(-150px) scale(0.8);
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.slide-in-right {
    opacity: 0;
    transform: translateX(150px) scale(0.8);
    transition: opacity 0.6s cubic-bezier(0.34, 1.56, 0.64, 1), transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.slide-in-left.visible,
.slide-in-right.visible {
    opacity: 1;
    transform: translateX(0) scale(1);
}

.about-text h3 {
    font-size: 40px;
    color: #0066CC;
    margin-bottom: 15px;
    font-weight: 600;
}

.about-text .subtitle {
    font-size: 18px;
    color: #666;
    margin-bottom: 20px;
    font-weight: 500;
}

.about-text p {
    margin-bottom: 15px;
    color: #666;
    line-height: 1.8;
    font-size: 18px;
}

.about-image {
    flex: 1;
    background: linear-gradient(135deg, #e8f4fc, #d4eaf7);
    border-radius: 12px;
    overflow: hidden;
    position: relative;
    height: 500px;
}

.about-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 12px;
}

/* 底部统计数字长条 */
.stats-bar {
    background: linear-gradient(90deg, #0066CC 0%, #0099DD 25%, #00BB77 50%, #00CC66 75%, #00DD55 100%);
    padding: 25px 40px;
    margin-top: 30px;
    width: 100%;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    border-radius: 8px;
}

.stats-bar .stats-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 20px;
}

.stats-bar .stat-item {
    text-align: center;
    padding: 10px;
}

.stats-bar .stat-number {
    font-size: 42px;
    font-weight: 700;
    margin-bottom: 5px;
    color: #fff;
    font-family: 'Arial Black', 'Microsoft YaHei', sans-serif;
    text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.stats-bar .stat-label {
    font-size: 14px;
    color: rgba(255,255,255,0.95);
    font-weight: 500;
}

/* 成功案例样式 */
.section-title {
    text-align: left;
    margin-bottom: 20px;
}

.section-title h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: 14px;
    color: var(--primary-color);
    font-weight: 600;
    letter-spacing: 2px;
}

.case-filter {
    display: flex;
    gap: 15px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.case-filter .filter-btn {
    padding: 12px 30px;
    border: none;
    background: var(--bg-light);
    color: var(--text-dark);
    border-radius: 30px;
    cursor: pointer;
    font-size: 15px;
    transition: all 0.3s;
}

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

.case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 30px;
}

.case-card {
    position: relative;
    overflow: hidden;
    border-radius: 8px;
}

.case-card .case-image {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.case-card:hover .case-image {
    transform: scale(1.05);
}

.case-card .case-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0,0,0,0.8), transparent);
    padding: 30px 20px 20px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.case-card:hover .case-overlay {
    opacity: 1;
}

.case-card .case-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--white);
    margin-bottom: 5px;
}

.case-card .case-subtitle {
    font-size: 14px;
    color: rgba(255,255,255,0.8);
}

.case-card .case-footer {
    padding: 15px 20px;
    background: var(--white);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.case-card .case-footer span {
    font-size: 14px;
    color: var(--text-light);
}

.case-card .case-footer a {
    color: var(--primary-color);
    font-size: 14px;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 5px;
}

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

/* 项目案例预览 */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: transform 0.3s;
}

.project-card:hover {
    transform: translateY(-5px);
}

.project-image {
    height: 200px;
    background: linear-gradient(135deg, var(--secondary-color), var(--accent-color));
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    font-size: 50px;
    position: relative;
    overflow: hidden;
}

.project-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    position: absolute;
    top: 0;
    left: 0;
}

.project-info {
    padding: 20px;
}

.project-info h3 {
    font-size: 20px;
    margin-bottom: 10px;
}

.project-info p {
    color: var(--text-light);
    margin-bottom: 15px;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    color: var(--text-light);
    font-size: 14px;
}

/* 新闻动态 */
.news-preview {
    background: white;
    padding: 60px 0;
}

.news-preview .container {
    max-width: 1400px;
    padding: 0 30px;
}

.news-tabs {
    display: flex;
    gap: 12px;
    margin-bottom: 25px;
}

.news-tab {
    padding: 10px 22px;
    border-radius: 25px;
    border: none;
    background: white;
    color: var(--text-dark);
    font-size: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

.news-tab.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 12px rgba(30, 144, 255, 0.3);
}

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

.news-card {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.06);
}

.news-content {
    padding: 0;
}

.news-content h3 {
    font-size: 16px;
    font-weight: 500;
    color: var(--text-dark);
    margin-bottom: 12px;
    line-height: 1.6;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-content p {
    display: none;
}

.news-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-light);
    font-size: 14px;
}

.news-meta span:first-child {
    flex: 1;
}

.news-meta span:last-child {
    background: var(--bg-light);
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 12px;
}

.news-images {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin-top: 20px;
}

.news-image-wrapper {
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.news-image-wrapper img {
    width: 100%;
    height: auto;
}

.news-more {
    margin-top: 20px;
    padding-left: 10px;
}

.news-more-link {
    display: inline-flex;
    align-items: center;
    color: var(--text-light);
    font-size: 14px;
    transition: color 0.3s ease;
}

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

.news-more-link::before {
    content: '';
    display: inline-block;
    width: 20px;
    height: 1px;
    background: var(--text-light);
    margin-right: 10px;
    transition: background 0.3s ease;
}

.news-more-link:hover::before {
    background: var(--primary-color);
}

/* 企业荣誉区域 */
.honors-section {
    background: white;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 30px;
}

.honor-item {
    background: var(--white);
    padding: 30px 20px;
    text-align: center;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.honor-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.honor-item i {
    font-size: 40px;
    color: var(--primary-color);
}

.honor-item span {
    font-size: 14px;
    color: var(--text-dark);
    font-weight: 500;
}

/* 页脚 */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 60px 0 30px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 40px;
}

.footer-section h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: var(--accent-color);
}

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

.footer-section ul li a {
    color: #ccc;
    transition: color 0.3s;
}

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

.footer-contact p {
    margin-bottom: 10px;
    color: #ccc;
}

.footer-bottom {
    text-align: center;
    padding-top: 30px;
    border-top: 1px solid #555;
    color: #999;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    background: var(--primary-color);
    color: var(--white);
    border-radius: 5px;
    transition: all 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

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

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

.btn-primary {
    background: #0066CC;
    color: #fff;
    border-radius: 6px;
    font-weight: 500;
}

.btn-primary:hover {
    background: #0055AA;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 102, 204, 0.3);
}

.btn-outline {
    background: transparent;
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

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

/* 响应式设计 */

/* 平板设备 */
@media (max-width: 992px) {
    .container {
        max-width: 960px;
    }

    .section-title h2 {
        font-size: 30px;
    }

    .business-grid,
    .projects-grid,
    .news-grid {
        grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    }
}

/* 手机设备 */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }

    /* 导航栏移动端优化 */
    .navbar {
        position: relative;
        padding: 10px 0;
    }

    .logo-img {
        height: 45px;
    }

    .menu-toggle {
        display: block !important;
        font-size: 16px;
        background: #1E90FF;
        color: white !important;
        padding: 5px 8px;
        border-radius: 4px;
        z-index: 9999;
        min-width: 28px;
        min-height: 28px;
        position: fixed;
        right: 5px;
        top: 8px;
        box-shadow: 0 1px 4px rgba(0,0,0,0.1);
        margin: 0;
        outline: none;
        border: none;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        width: 100%;
        height: calc(100vh - 70px);
        background: var(--white);
        flex-direction: column;
        gap: 0;
        transition: left 0.3s ease;
        overflow-y: auto;
        box-shadow: 0 2px 10px rgba(0,0,0,0.1);
        z-index: 1000;
        padding-top: 10px;
    }

    .nav-menu.active {
        left: 0;
    }

    .nav-menu li {
        width: 100%;
        border-bottom: 1px solid #eee;
    }

    .nav-menu a {
        display: block;
        padding: 15px 20px;
        font-size: 16px;
    }

    .nav-menu a::after {
        display: none;
    }

    /* 轮播图移动端优化 */
    .hero-section {
        height: 70vh;
        min-height: 400px;
    }

    .banner-content {
        padding: 20px 30px;
        max-width: 90%;
    }

    .banner-content h2 {
        font-size: 24px;
        margin-bottom: 10px;
    }

    .banner-content p {
        font-size: 14px;
    }

    .banner-dots {
        bottom: 15px;
    }

    .banner-dot {
        width: 10px;
        height: 10px;
    }

    /* 区块间距优化 */
    .section {
        padding: 40px 0;
    }

    .section-title {
        margin-bottom: 30px;
    }

    .section-title h2 {
        font-size: 24px;
    }

    .section-title p {
        font-size: 14px;
    }

    /* 业务卡片优化 */
    .business-card {
        padding: 25px 20px;
    }

    .business-icon {
        font-size: 48px;
    }

    .business-card h3 {
        font-size: 18px;
    }

    /* 关于我们优化 */
    .about-preview {
        padding: 30px 0;
    }

    .about-content {
        flex-direction: column;
        gap: 30px;
    }

    .about-text h3 {
        font-size: 22px;
    }

    .about-image {
        height: 250px;
        order: -1;
    }

    /* 项目卡片优化 */
    .project-image {
        height: 180px;
    }

    .project-info h3 {
        font-size: 18px;
    }

    /* 新闻卡片优化 */
    .news-image {
        height: 160px;
    }

    .news-content h3 {
        font-size: 16px;
    }

    /* 页脚优化 */
    .footer {
        padding: 40px 0 20px;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .footer-section h3 {
        font-size: 16px;
        margin-bottom: 15px;
    }

    .footer-bottom {
        font-size: 12px;
    }

    /* 按钮触摸优化 */
    .btn {
        padding: 14px 28px;
        font-size: 15px;
        min-height: 44px;
    }
}

/* 小屏手机优化 */
@media (max-width: 480px) {
    .hero-section {
        height: 250px;
    }

    .side-nav {
        display: none;
    }

    .banner-content {
        padding: 15px 20px;
    }

    .banner-content h2 {
        font-size: 20px;
    }

    .banner-content p {
        font-size: 12px;
    }

    .section-title h2 {
        font-size: 20px;
    }

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

    .logo-text h1 {
        font-size: 14px;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    /* 增大触摸目标 */
    .nav-menu a {
        min-height: 44px;
    }

    .business-card,
    .project-card,
    .news-card {
        cursor: pointer;
    }

    /* 移除hover效果，改用active */
    .business-card:hover,
    .project-card:hover {
        transform: none;
    }

    .business-card:active {
        transform: scale(0.98);
    }

    /* 优化按钮触摸区域 */
    .btn {
        min-height: 44px;
        padding: 12px 24px;
    }
}

/* 横屏优化 */
@media (max-width: 768px) and (orientation: landscape) {
    .hero-section {
        height: 80vh;
        min-height: 250px;
    }

    .banner-content {
        padding: 15px 30px;
    }

    .banner-content h2 {
        font-size: 20px;
    }

    .banner-content p {
        font-size: 14px;
    }
}

/* 侧边垂直导航 */
.side-nav {
    position: fixed;
    right: 30px;
    top: 50%;
    transform: translateY(-50%);
    z-index: 999;
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.side-nav-item {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: 2px solid transparent;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    color: #333;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0,0,0,0.15);
}

.side-nav-item:hover {
    background: #1E90FF;
    color: #fff;
    transform: scale(1.1);
}

.side-nav-item.active {
    background: #1E90FF;
    color: #fff;
}

/* 打印样式 */
@media print {
    .header,
    .footer,
    .hero-section {
        display: none;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    .container {
        max-width: 100%;
    }
}

/* 产品轮播样式 */
.met-index-case {
    padding: 40px 0 5px;
    background: #fff;
}

.dedicated-team-items {
    margin-top: 30px;
}

.dedicated-team-single-item {
    margin: 0 10px;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 2px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.dedicated-team-single-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.dedicated-team-img-holder {
    position: relative;
    overflow: hidden;
}

.dedicated-team-img-holder img {
    width: 100%;
    height: 280px;
    object-fit: cover;
    transition: transform 0.3s ease;
}

.dedicated-team-single-item:hover .dedicated-team-img-holder img {
    transform: scale(1.1);
}

.dedicated-team-img-holder .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.dedicated-team-single-item:hover .overlay {
    opacity: 1;
}

.dedicated-team-img-holder .overlays {
    text-align: center;
}

.dedicated-team-img-holder .inner-holder h4 {
    color: #fff;
    font-size: 16px;
    font-weight: 600;
    margin: 0;
    padding: 10px 20px;
    background: rgba(30, 144, 255, 0.9);
    border-radius: 4px;
}