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

/* 可访问性样式 */
/* 屏幕阅读器专用文本 */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* 增强焦点样式 */
*:focus {
    outline: 2px solid #0066cc;
    outline-offset: 2px;
}

/* 移除链接的默认下划线，但保持可访问性 */
a {
    color: inherit;
    text-decoration: none;
    transition: all 0.3s ease;
}

a:hover {
    text-decoration: underline;
}

/* 按钮可访问性改进 */
button {
    cursor: pointer;
    transition: all 0.3s ease;
}

button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

/* 优化表单元素对比度 */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
textarea, select {
    background-color: #fff;
    color: #333;
    border: 1px solid #666;
    padding: 8px 12px;
    border-radius: 4px;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
input[type="tel"]:focus,
textarea:focus, select:focus {
    border-color: #0066cc;
    outline: none;
    box-shadow: 0 0 0 2px rgba(0, 102, 204, 0.2);
}

/* 优化颜色对比度 */
body {
    color: #333333;
    background-color: #ffffff;
}

/* 确保文本颜色与背景有足够对比度 */
section {
    background-color: #ffffff;
    color: #333333;
}

/* 页脚颜色优化 */
footer {
    background-color: #2c3e50;
    color: #ffffff;
}

/* 按钮颜色优化 */
.btn-primary {
    background-color: #0066cc;
    color: #ffffff;
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background-color: #0052a3;
    text-decoration: none;
}

/* 导航栏颜色优化 */
.navbar {
    background-color: #ffffff;
    color: #333333;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* 链接颜色优化 */
.nav-link {
    color: #333333;
}

.nav-link:hover,
.nav-link.active {
    color: #0066cc;
}

/* 新增动画定义 */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes slideInRight {
    from {
        opacity: 0;
        transform: translateX(50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInLeft {
    from {
        opacity: 0;
        transform: translateX(-50px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}



body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8f9fa;
}

/* 响应式图片样式 */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

.container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1500px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 24px;
    font-weight: bold;
    color: #333;
}

.logo-img {
    max-width: 150px;
    max-height: 120px;
    width: auto;
    height: auto;
    margin-right: 15px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #215ea4;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: #215ea4;
    transition: width 0.3s ease;
}

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

.language-switcher {
    display: flex;
    align-items: center;
    margin-right: 20px;
}

.language-btn {
    background: linear-gradient(135deg, #215ea4, #308ccf);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 50px;
    text-align: center;
    box-shadow: 0 2px 8px rgba(30, 80, 216, 0.2);
}

/* 英文文本默认隐藏 */
.en-text {
    display: none !important;
}

/* 中文文本默认显示 */
.zh-text {
    display: inline !important;
}

/* 当body有lang-en类时，显示英文文本，隐藏中文文本 */
body.lang-en .en-text {
    display: inline !important;
}

body.lang-en .zh-text {
    display: none !important;
}

/* 修复换行问题，确保语言切换时布局正确 */
body.lang-en h1, body.lang-en h2, body.lang-en h3, body.lang-en h4, body.lang-en h5, body.lang-en h6, body.lang-en p, body.lang-en a {
    white-space: normal;
    line-height: 1.6;
}

/* 确保按钮文本在语言切换时显示正常 */
body.lang-en .btn {
    display: inline-block;
    vertical-align: middle;
}

.language-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(30, 80, 216, 0.3);
}

.language-btn:active {
    transform: translateY(0);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 首页轮播图 */
.hero {
    position: relative;
    height: 100vh;
    overflow: hidden;
    margin-top: 70px;
}

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

.slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slide.active {
    opacity: 1;
}

.slide-content {
    text-align: center;
    color: white;
    z-index: 2;
    position: relative;
    max-width: 800px;
    padding: 0 20px;
}

.slide-content h1 {
    font-size: 3.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

.slide-content p {
    font-size: 1.3rem;
    margin-bottom: 30px;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.hero-controls {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 100%;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
    z-index: 3;
}

.prev-btn,
.next-btn {
    background: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    font-size: 24px;
    padding: 15px;
    border-radius: 50%;
    cursor: pointer;
    transition: background 0.3s ease;
}

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

.hero-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 3;
}

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

.indicator.active {
    background: white;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 30px;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.btn-primary {
    background: linear-gradient(135deg, #215ea4, #308ccf);
    color: white;
    box-shadow: 0 4px 15px rgba(30, 80, 216, 0.3);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #215ea4, #308ccf);
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(30, 80, 216, 0.4);
}

.btn-primary:active {
    transform: translateY(1px);
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-primary:hover::before {
    left: 100%;
}

/* 微交互增强 */


/* 章节标题 */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 15px;
    position: relative;
}

.section-header h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #215ea4;
}

.section-header p {
    font-size: 1.2rem;
    color: #666;
}

/* 核心业务 */
.services-overview {
    padding: 100px 0;
    background: #f8f9fa;
}

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

.service-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #f0f0f0;
    animation: fadeIn 0.6s ease-out;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.15);
}

/* 元素进入动画 */
.fade-in {
    animation: fadeIn 0.8s ease-out forwards;
    opacity: 0;
}

.slide-in-right {
    animation: slideInRight 0.8s ease-out forwards;
    opacity: 0;
}

.slide-in-left {
    animation: slideInLeft 0.8s ease-out forwards;
    opacity: 0;
}

/* 延迟动画 */
.delay-1 {
    animation-delay: 0.1s;
}

.delay-2 {
    animation-delay: 0.2s;
}

.delay-3 {
    animation-delay: 0.3s;
}

.delay-4 {
    animation-delay: 0.4s;
}



/* 滚动进度条 */
.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    height: 3px;
    background: linear-gradient(90deg, #1e50d7, #406fd8);
    z-index: 9999;
    transition: width 0.1s ease;
    width: 0%;
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
}

.service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #215ea4, #308ccf);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.service-card h3 {
    font-size: 1.4rem;
    /* color: #1E50D8; */
    margin-bottom: 15px;
}

.service-card p {
    color: #666;
    line-height: 1.6;
}

/* 公司实力 */
.company-strength {
    padding: 100px 0;
    background: #F5F7FA;
}

.strength-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.strength-text h2 {
    font-size: 2.5rem;
    /* color: #1E50D8; */
    margin-bottom: 25px;
}

.strength-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.stat-item {
    text-align: center;
    padding: 20px;
    background: white;
    border-radius: 10px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #215ea4;
    margin-bottom: 10px;
}

.stat-label {
    color: #666;
    font-size: 0.9rem;
}

.strength-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* 企业文化 */
.company-culture {
    padding: 100px 0;
    background: white;
}

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

.culture-item {
    text-align: center;
    padding: 30px 20px;
    background: #F5F7FA;
    border-radius: 15px;
    transition: transform 0.3s ease;
}

.culture-item:hover {
    transform: translateY(-5px);
}

.culture-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #215ea4, #308ccf);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.8rem;
}

.culture-item h3 {
    font-size: 1.3rem;
    /* color: #1E50D8; */
    margin-bottom: 10px;
}

.culture-item p {
    color: #666;
    font-size: 1rem;
}

/* 页脚 */
.footer {
    background: #1a1a1a;
    color: 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 h3,
.footer-section h4 {
    color: #1369ca;
    margin-bottom: 20px;
    white-space: normal;
    line-height: 1.4;
}

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

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

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

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

.footer-section ul li a:hover {
    color: #1369ca;
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 20px;
}

.social-links a {
    width: 40px;
    height: 40px;
    background: #1369ca;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #4A90E2;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #333;
    color: #999;
}

/* 关于我们页面样式 */
.page-header {
    background: linear-gradient(135deg, #1E50D8 0%, #4A90E2 100%);
    color: white;
    padding: 120px 0 80px;
    text-align: center;
    margin-top: 70px;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 15px;
    font-weight: bold;
}

.page-header p {
    font-size: 1.3rem;
    opacity: 0.9;
}

.company-intro {
    padding: 100px 0;
    background: white;
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    /* color: #1E50D8; */
    margin-bottom: 25px;
}

.intro-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 20px;
    line-height: 1.8;
}

.intro-highlights {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-top: 30px;
}

.highlight-item {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: #F5F7FA;
    border-radius: 10px;
    border-left: 4px solid #215ea4;
}

.highlight-item i {
    color: #215ea4; 
    font-size: 1.2rem;
}

.intro-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.company-culture-detailed {
    padding: 100px 0;
    background: #F5F7FA;
}

.culture-detailed-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.culture-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.culture-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
}

.culture-card .culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #215ea4, #308ccf);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.culture-card h3 {
    font-size: 1.4rem;
    color: #215ea4;
    margin-bottom: 10px;
}

.culture-card h4 {
    font-size: 1.1rem;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.culture-card p {
    color: #666;
    line-height: 1.6;
}

.team-spirit {
    padding: 100px 0;
    background: white;
}

.spirit-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.spirit-text p {
    font-size: 1.1rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

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

.value-item {
    text-align: center;
    padding: 20px 10px;
    background: #F5F7FA;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
}

.value-icon {
    width: 50px;
    height: 50px;
    background: linear-gradient(135deg, #215ea4, #308ccf);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 15px;
    font-size: 1.2rem;
    font-weight: bold;
}

.value-item h4 {
    color: #215ea4;
    margin-bottom: 10px;
    font-size: 1rem;
}

.value-item p {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.4;
}

.spirit-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.company-strength-detailed {
    padding: 100px 0;
    background: #F5F7FA;
}

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

.stat-card {
    background: white;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
}

.stat-card .stat-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #215ea4, #308ccf);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.8rem;
}

.stat-card .stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: #215ea4;
    margin-bottom: 10px;
}

.stat-card .stat-label {
    font-size: 1.2rem;
    color: #333;
    margin-bottom: 15px;
    font-weight: 600;
}

.stat-card .stat-desc {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.5;
}

.development-timeline {
    padding: 100px 0px;
    background: linear-gradient(135deg, #f8f9fa 0%, #eef2f7 100%);
}

.timeline {
    position: relative;
    max-width: 1200px;
    margin: 60px auto 0;
}

.timeline-items {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
}

.timeline-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 180px;
    transition: all 0.3s ease;
    margin-bottom: 30px;
}

.timeline-node-wrap {
    display: flex;
    flex-direction: column;
    align-items: center;
}

.timeline-node {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 3;
    margin-bottom: 12px;
}

.node-dot {
    width: 20px;
    height: 20px;
    background: #215ea4;
    border-radius: 50%;
    position: relative;
    z-index: 2;
    transition: all 0.3s ease;
    box-shadow: 0 0 0 0 rgba(30, 80, 216, 0.4);
}

.node-ring {
    position: absolute;
    width: 36px;
    height: 36px;
    border: 3px solid #839feb;
    border-radius: 50%;
    opacity: 0.4;
    transition: all 0.3s ease;
}

.timeline-item:hover .node-dot {
    background: #4A90E2;
    box-shadow: 0 0 0 10px rgba(30, 80, 216, 0.15);
    transform: scale(1.3);
}

.timeline-item:hover .node-ring {
    opacity: 1;
    border-color: #215ea4;
    transform: scale(1.4);
}

.timeline-date {
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    color: white;
    padding: 8px 20px;
    border-radius: 25px;
    font-weight: bold;
    font-size: 0.95rem;
    text-align: center;
    box-shadow: 0 4px 15px rgba(30, 80, 216, 0.3);
    transition: all 0.3s ease;
    position: relative;
    z-index: 2;
    margin-bottom: 35px;
    white-space: nowrap;
}

.timeline-item:hover .timeline-date {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 6px 25px rgba(30, 80, 216, 0.4);
}

.timeline-content {
    background: white;
    padding: 20px;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: all 0.3s ease;
    border: 1px solid #e8eef4;
    position: relative;
    overflow: hidden;
    text-align: center;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(to right, #215ea4, #4A90E2);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.timeline-item:hover .timeline-content {
    transform: translateY(-8px);
    box-shadow: 0 12px 40px rgba(30, 80, 216, 0.18);
    border-color: #839feb;
}

.timeline-item:hover .timeline-content::before {
    transform: scaleX(1);
}

.timeline-content h3 {
    color: #215ea4;
    margin-bottom: 10px;
    font-size: 1.1rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-content h3 {
    color: #4A90E2;
}

.timeline-content p {
    color: #666;
    line-height: 1.6;
    font-size: 0.85rem;
    transition: all 0.3s ease;
}

.timeline-item:hover .timeline-content p {
    color: #444;
}

/* 业务服务页面样式 */
.services-overview-detailed {
    padding: 100px 0;
    background: white;
}

.services-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 40px;
}

.tab-btn {
    background: #F5F7FA;
    border: 2px solid #E5E7EB;
    color: #666;
    padding: 15px 30px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
}

.tab-btn:hover,
.tab-btn.active {
    background: #215ea4;
    color: white;
    /* border-color: #215ea4; */
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(30, 80, 216, 0.3);
}

.service-detail {
    padding: 100px 0;
    background: #F5F7FA;
}

.service-detail:nth-child(even) {
    background: white;
}

.service-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.service-text h2 {
    font-size: 2.5rem;
    /* color: #1E50D8; */
    margin-bottom: 25px;
}

.service-intro {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 40px;
    line-height: 1.8;
}

.service-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    flex-shrink: 0;
}

.feature-content h3 {
    /* color: #1E50D8; */
    margin-bottom: 10px;
    font-size: 1.2rem;
}

.feature-content p {
    color: #666;
    line-height: 1.6;
    font-size: 0.95rem;
}

.service-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.service-advantages {
    padding: 100px 0;
    background: white;
}

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

.advantage-card {
    background: #F5F7FA;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #E5E7EB;
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
    background: white;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #1E50D8, #4A90E2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.advantage-card h3 {
    font-size: 1.4rem;
    /* color: #1E50D8; */
    margin-bottom: 15px;
}

.advantage-card p {
    color: #666;
    line-height: 1.6;
}

/* 产品中心页面样式 */
.products-container {
    padding: 60px 0;
    background: #F5F7FA;
}

.products-container .container {
    display: flex;
    gap: 30px;
}

.sidebar {
    width: 280px;
    flex-shrink: 0;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    padding: 30px;
    position: sticky;
    top: 100px;
    align-self: flex-start;
}

.sidebar-header {
    margin-bottom: 25px;
    padding-bottom: 20px;
    border-bottom: 2px solid #F5F7FA;
}

.sidebar-header h3 {
    font-size: 1.4rem;
    color: #333;
    margin: 0;
}

.category-nav {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.category-btn {
    background: #F5F7FA;
    border: 2px solid #E5E7EB;
    color: #666;
    padding: 14px 20px;
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    font-size: 1rem;
    text-align: left;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.category-btn:hover,
.category-btn.active {
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    color: white;
    border-color: #215ea4;
    transform: translateX(5px);
    box-shadow: 0 5px 20px rgba(30, 80, 216, 0.3);
}

.products-showcase {
    flex: 1;
    min-width: 0;
}

.product-category {
    margin-bottom: 80px;
}

.product-category:last-child {
    margin-bottom: 0;
}

.category-header {
    text-align: center;
    margin-bottom: 50px;
}

.category-header h2 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 15px;
}

.category-header p {
    font-size: 1.2rem;
    color: #666;
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.product-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.product-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
}

.product-image {
    position: relative;
    height: 250px;
    overflow: hidden;
}

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

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

.product-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* background: rgba(30, 80, 216, 0.8); */
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

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

.view-details {
    background: white;
    color: #215ea4;
    border: none;
    padding: 12px 25px;
    border-radius: 25px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.view-details:hover {
    background: #215ea4;
    color: white;
    transform: scale(1.05);
}

.product-info {
    padding: 25px;
}

.product-info h5 {
    font-size: 1.4rem;
    color: #215ea4;
    margin-bottom: 10px;
}
.product-info h6 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 10px;
}

.product-info p {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

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

.tag {
    background: #F5F7FA;
    color: #215ea4;
;
    padding: 4px 12px;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid #E5E7EB;
}

.product-advantages {
    padding: 100px 0;
    background: white;
}

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

.advantage-item {
    text-align: center;
    padding: 40px 30px;
    background: #F5F7FA;
    border-radius: 15px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #E5E7EB;
}

.advantage-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
    background: white;
}

.advantage-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.advantage-item h3 {
    font-size: 1.4rem;
    color: #333;
    margin-bottom: 15px;
}

.advantage-item p {
    color: #666;
    line-height: 1.6;
}

/* 新闻资讯页面样式 */
.news-categories {
    padding: 40px 0;
    background: white;
    border-bottom: 1px solid #E5E7EB;
}

.category-tabs {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
}

.news-content {
    padding: 80px 0;
    background: #F5F7FA;
}

.news-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
}

.main-news {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.news-item {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 30px;
    border-bottom: 1px solid #E5E7EB;
    transition: transform 0.3s ease;
}

.news-item:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.news-item:hover {
    transform: translateX(5px);
}

.news-item.featured {
    flex-direction: column;
    border: 2px solid #1E50D8;
    border-radius: 15px;
    padding: 0;
    margin-bottom: 40px;
    overflow: hidden;
}

.news-image {
    position: relative;
    flex-shrink: 0;
}

.news-item.featured .news-image {
    width: 100%;
    height: 300px;
}

.news-item:not(.featured) .news-image {
    width: 200px;
    height: 150px;
}

.news-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 10px;
}

.news-item.featured .news-image img {
    border-radius: 0;
}

.news-category {
    position: absolute;
    top: 15px;
    left: 15px;
    background: #1E50D8;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.news-content-text {
    flex: 1;
}

.news-item.featured .news-content-text {
    padding: 30px;
}

.news-content-text h2,
.news-content-text h3 {
    /* color: #1E50D8; */
    margin-bottom: 15px;
    line-height: 1.4;
}

.news-item.featured .news-content-text h2 {
    font-size: 1.8rem;
}

.news-content-text h3 {
    font-size: 1.3rem;
}

.news-excerpt {
    color: #666;
    line-height: 1.6;
    margin-bottom: 15px;
}

.news-meta {
    display: flex;
    gap: 20px;
    color: #999;
    font-size: 0.9rem;
}

.news-meta span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.news-list {
    margin-top: 20px;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 40px;
}

.page-btn {
    background: #F5F7FA;
    border: 1px solid #E5E7EB;
    color: #666;
    padding: 10px 20px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.page-btn:hover:not(:disabled) {
    background: #1E50D8;
    color: white;
    border-color: #1E50D8;
}

.page-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.page-numbers {
    display: flex;
    gap: 5px;
}

.page-number {
    background: #F5F7FA;
    border: 1px solid #E5E7EB;
    color: #666;
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-number:hover,
.page-number.active {
    background: #1E50D8;
    color: white;
    border-color: #1E50D8;
}

.page-ellipsis {
    display: flex;
    align-items: center;
    padding: 0 10px;
    color: #999;
}

.news-sidebar {
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-container {
    background: white;
    border-radius: 15px;
    padding: 40px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    display: flex;
    flex-direction: column;
    gap: 30px;
}

.sidebar-widget {
    padding: 30px;
    border-bottom: 1px solid #E5E7EB;
}

.sidebar-widget:last-child {
    border-bottom: none;
}

.sidebar-widget h3 {
    /* color: #1E50D8; */
    margin-bottom: 20px;
    font-size: 1.3rem;
    padding-bottom: 10px;
    border-bottom: 2px solid #F5F7FA;
}

.hot-news-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.hot-news-item {
    display: flex;
    gap: 15px;
    align-items: flex-start;
    padding: 15px;
    background: #F5F7FA;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.hot-news-item:hover {
    transform: translateX(5px);
}

.hot-news-number {
    background: #215ea4;
    color: white;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    flex-shrink: 0;
}

.hot-news-content h4 {
    color: #333;
    margin-bottom: 5px;
    font-size: 0.95rem;
    line-height: 1.4;
}

.hot-news-views {
    color: #999;
    font-size: 0.8rem;
}

.tag-cloud {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tag-cloud .tag {
    background: #F5F7FA;
    color: #215ea4;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #E5E7EB;
}

.tag-cloud .tag:hover {
    background: #215ea4;
    color: white;
    transform: translateY(-2px);
}

.contact-widget {
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    color: white;
}

.contact-widget h3 {
    color: white;
    border-bottom-color: rgba(255, 255, 255, 0.2);
}

.contact-info p {
    margin-bottom: 10px;
    /* display: flex; */
    align-items: center;
    gap: 10px;
}

.contact-btn {
    display: inline-block;
    background: white;
    color: #1E50D8;
    padding: 12px 25px;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    margin-top: 20px;
    transition: all 0.3s ease;
}

.contact-btn:hover {
    background: #F5F7FA;
    transform: translateY(-2px);
}

/* 联系我们页面样式 */
.contact-info {
    padding: 80px 0;
    background: white;
}

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

.contact-card {
    background: #F5F7FA;
    padding: 40px 30px;
    border-radius: 15px;
    text-align: center;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #E5E7EB;
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
    background: white;
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 25px;
    color: white;
    font-size: 2rem;
}

.contact-card h3 {
    font-size: 1.4rem;
    /* color: #1E50D8; */
    margin-bottom: 15px;
}

.contact-card p {
    color: #666;
    margin-bottom: 5px;
    line-height: 1.6;
}

.contact-main {
    padding: 80px 0;
    background: #F5F7FA;
}

.contact-layout {
    display: grid;
    /* grid-template-columns: 1fr 1fr;
    gap: 60px; */
}

.map-section h2,
.contact-form-section h2 {
    font-size: 2rem;
    /* color: #1E50D8; */
    margin-bottom: 20px;
}

.map-container {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px;
}

.map-placeholder {
    height: 300px;
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: white;
    text-align: center;
    cursor: pointer;
    transition: transform 0.3s ease;
}

.map-placeholder:hover {
    transform: scale(1.02);
}

.map-placeholder i {
    font-size: 3rem;
    margin-bottom: 20px;
}

.map-placeholder p {
    margin-bottom: 10px;
    font-size: 1.1rem;
}

.map-info h4 {
    /* color: #1E50D8; */
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.map-info ul {
    list-style: none;
    padding: 0;
}

.map-info li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #666;
}

.map-info i {
    color: #215ea4;
    width: 20px;
}

.contact-form-section p {
    color: #666;
    margin-bottom: 30px;
    font-size: 1.1rem;
}

.contact-form {
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    color: #333;
    font-weight: 500;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #E5E7EB;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #1E50D8;
}

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    color: #666;
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.privacy-link {
    color: #1E50D8;
    text-decoration: none;
}

.privacy-link:hover {
    text-decoration: underline;
}

.submit-btn {
    background: linear-gradient(135deg, #1E50D8, #4A90E2);
    color: white;
    border: none;
    padding: 15px 40px;
    border-radius: 25px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 0 auto;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(30, 80, 216, 0.3);
}

.department-contacts {
    padding: 80px 0;
    background: white;
}

.department-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}
.hi{
    text-align: center;
}
.department-card {
    background: #F5F7FA;
    padding: 40px 30px;
    border-radius: 15px;
    /* text-align: center; */
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border: 1px solid #E5E7EB;
}

.department-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(30, 80, 216, 0.15);
    background: white;
}

.department-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, #215ea4, #4A90E2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: white;
    font-size: 1.8rem;
}

.department-card h3 {
    font-size: 1.3rem;
    /* color: #1E50D8; */
    margin-bottom: 10px;
}

.department-card p {
    color: #666;
    margin-bottom: 20px;
}

.department-contact p {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    margin-bottom: 8px;
    color: #666;
    font-size: 0.9rem;
}

.department-contact i {
    color: #215ea4;
    width: 16px;
}

.faq-section {
    padding: 80px 0;
    background: #F5F7FA;
}

.faq-list {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: white;
    border-radius: 15px;
    margin-bottom: 20px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #F5F7FA;
}

.faq-question h3 {
    color: #1E50D8;
    font-size: 1.2rem;
    margin: 0;
}

.faq-question i {
    color: #1E50D8;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    padding: 0 30px;
    max-height: 0;
    overflow: hidden;
    transition: all 0.3s ease;
}

.faq-item.active .faq-answer {
    padding: 0 30px 25px;
    max-height: 200px;
}

.faq-answer p {
    color: #666;
    line-height: 1.6;
    margin: 0;
}

/* 产品详情页面样式 */
.breadcrumb {
    background: #f8f9fa;
    padding: 20px 0;
    margin-top: 70px;
}

.breadcrumb-nav {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.9rem;
}

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

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

.breadcrumb-nav .separator {
    color: #666;
}

.breadcrumb-nav .current {
    color: #333;
    font-weight: 500;
}

.product-detail {
    padding: 60px 0;
    background: white;
}

.product-detail-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: start;
}

.product-images {
    position: sticky;
    top: 100px;
}

.main-image {
    margin-bottom: 20px;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

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

.thumbnail-images {
    display: flex;
    gap: 10px;
}

.thumbnail {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.thumbnail:hover,
.thumbnail.active {
    border-color: #007bff;
    transform: scale(1.05);
}

.product-info h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.3;
}

.product-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 30px;
}

.product-category {
    /* background: #007bff; */
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.product-sku {
    color: #666;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
}

.product-description {
    margin-bottom: 30px;
    line-height: 1.8;
    color: #666;
}

.product-features {
    margin-bottom: 30px;
}

.product-features h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.product-features ul {
    list-style: none;
    padding: 0;
}

.product-features li {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 10px;
    color: #666;
}

.product-features i {
    color: #007bff;
    font-size: 0.9rem;
}

.product-specs {
    margin-bottom: 40px;
}

.product-specs h3 {
    color: #333;
    margin-bottom: 15px;
    font-size: 1.3rem;
}

.specs-table {
    background: #f8f9fa;
    border-radius: 10px;
    padding: 20px;
}

.spec-row {
    display: flex;
    justify-content: space-between;
    padding: 10px 0;
    border-bottom: 1px solid #e9ecef;
}

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

.spec-label {
    font-weight: 500;
    color: #333;
}

.spec-value {
    color: #666;
}

.product-actions {
    display: flex;
    gap: 20px;
}

.btn-secondary {
    background: #6c757d;
    color: white;
    border: none;
    padding: 12px 30px;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-secondary:hover {
    background: #5a6268;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(108, 117, 125, 0.4);
}

.product-tabs {
    padding: 60px 0;
    background: #f8f9fa;
}

.tab-navigation {
    display: flex;
    justify-content: center;
    margin-bottom: 40px;
    border-bottom: 1px solid #e9ecef;
}

.tab-btn {
    background: none;
    border: none;
    padding: 15px 30px;
    cursor: pointer;
    font-size: 1rem;
    color: #666;
    border-bottom: 3px solid transparent;
    transition: all 0.3s ease;
}

.tab-btn:hover,
.tab-btn.active {
    color:white;
    /* border-bottom-color: #007bff; */
}

.tab-content {
    max-width: 800px;
    margin: 0 auto;
}

.tab-panel {
    display: none;
    background: white;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.tab-panel.active {
    display: block;
}

.tab-panel h3 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.5rem;
}

.tab-panel h4 {
    color: #333;
    margin: 20px 0 10px;
    font-size: 1.2rem;
}

.tab-panel ul {
    margin: 15px 0;
    padding-left: 20px;
}

.tab-panel li {
    margin-bottom: 8px;
    color: #666;
    line-height: 1.6;
}

.specs-detail table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.specs-detail th,
.specs-detail td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid #e9ecef;
}

.specs-detail th {
    background: #f8f9fa;
    font-weight: 600;
    color: #333;
}

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

.application-item {
    text-align: center;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.application-item:hover {
    transform: translateY(-5px);
}

.application-item i {
    font-size: 2rem;
    color: #007bff;
    margin-bottom: 15px;
}

.application-item h4 {
    color: #333;
    margin-bottom: 10px;
}

.application-item p {
    color: #666;
    font-size: 0.9rem;
}

.downloads-list {
    margin-top: 20px;
}

.download-item {
    display: flex;
    align-items: center;
    gap: 20px;
    padding: 20px;
    background: #f8f9fa;
    border-radius: 10px;
    margin-bottom: 15px;
    transition: transform 0.3s ease;
}

.download-item:hover {
    transform: translateX(5px);
}

.download-item i {
    font-size: 2rem;
    color: #dc3545;
}

.download-info {
    flex: 1;
}

.download-info h4 {
    color: #333;
    margin-bottom: 5px;
}

.download-info p {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.btn-outline {
    background: transparent;
    color: #007bff;
    border: 2px solid #007bff;
    padding: 8px 20px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 0.9rem;
}

.btn-outline:hover {
    background: #007bff;
    color: white;
}

.related-products {
    padding: 60px 0;
    background: white;
}

/* 新闻详情页面样式 */
.news-detail {
    padding: 60px 0;
    background: white;
}

.news-detail-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 40px;
    align-items: start;
}

.main-content {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 5px 30px rgba(0, 0, 0, 0.1);
}

.news-article {
    padding: 40px;
}

.news-header {
    margin-bottom: 40px;
    padding-bottom: 30px;
    border-bottom: 1px solid #e9ecef;
}

.news-meta {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.news-category {
    background: #007bff;
    color: white;
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.news-date,
.news-views {
    color: #666;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
}

.news-article h1 {
    font-size: 2.5rem;
    color: #333;
    margin-bottom: 20px;
    line-height: 1.3;
}

.news-summary {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.6;
    background: #f8f9fa;
    padding: 20px;
    border-radius: 10px;
    border-left: 4px solid #007bff;
}

.news-image {
    margin: 40px 0;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

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

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

.news-body {
    line-height: 1.8;
    color: #333;
    font-size: 1.1rem;
}

.news-body h2 {
    color: #333;
    margin: 40px 0 20px;
    font-size: 1.8rem;
    border-bottom: 2px solid #f8f9fa;
    padding-bottom: 10px;
}

.news-body h3 {
    color: #333;
    margin: 30px 0 15px;
    font-size: 1.4rem;
}

.news-body p {
    margin-bottom: 20px;
    text-align: justify;
}

.news-body ul {
    margin: 20px 0;
    padding-left: 30px;
}

.news-body li {
    margin-bottom: 10px;
    color: #666;
}

.news-tags {
    margin: 40px 0;
    padding: 30px 0;
    border-top: 1px solid #e9ecef;
    border-bottom: 1px solid #e9ecef;
}

.news-tags .tag {
    background: #f8f9fa;
    color: #007bff;
    padding: 8px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    margin-right: 10px;
    margin-bottom: 10px;
    display: inline-block;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.news-tags .tag:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
}

.news-share {
    margin: 40px 0;
    padding: 30px;
    background: #f8f9fa;
    border-radius: 15px;
}

.news-share h4 {
    color: #333;
    margin-bottom: 20px;
    font-size: 1.2rem;
}

.share-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.share-btn {
    background: white;
    border: 2px solid #e9ecef;
    color: #666;
    padding: 10px 20px;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
}

.share-btn:hover {
    border-color: #007bff;
    color: #007bff;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 123, 255, 0.2);
}

.share-btn i {
    font-size: 1.1rem;
}

.related-news {
    margin-top: 60px;
    padding: 40px;
    background: #f8f9fa;
    border-radius: 15px;
}

.related-news h3 {
    color: #333;
    margin-bottom: 30px;
    font-size: 1.5rem;
    text-align: center;
}

.related-news-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
}

.related-news-item {
    background: white;
    border-radius: 10px;
    padding: 20px;
    box-shadow: 0 3px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

.related-news-item:hover {
    transform: translateY(-5px);
}

.related-news-item h4 {
    margin-bottom: 10px;
}

.related-news-item h4 a {
    color: #333;
    text-decoration: none;
    transition: color 0.3s ease;
}

.related-news-item h4 a:hover {
    color: #007bff;
}

.related-news-item p {
    color: #666;
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.related-news-meta {
    display: flex;
    gap: 15px;
    font-size: 0.8rem;
    color: #999;
}

/* 响应式设计 */

/* 平板设备 */
@media (max-width: 1024px) {
    .slide-content h1 {
        font-size: 3rem;
    }
    
    .slide-content p {
        font-size: 1.2rem;
    }
    
    .services-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* 平板/手机设备 */
@media (max-width: 768px) {
    .hamburger {
        display: flex;
    }
    
    .language-switcher {
        margin-right: 10px;
    }
    
    .language-btn {
        padding: 6px 12px;
        font-size: 12px;
        min-width: 40px;
    }
    
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: white;
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 20px 0;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-menu li {
        margin: 15px 0;
    }
    
    .slide-content h1 {
        font-size: 2.5rem;
    }
    
    .slide-content p {
        font-size: 1.1rem;
    }
    
    .strength-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .strength-stats {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .services-grid {
        grid-template-columns: 1fr;
    }
    
    .culture-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .hero-controls {
        display: none;
    }
    
    /* 关于我们页面响应式 */
    .intro-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .spirit-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    /* 新闻资讯页面响应式 */
    .news-layout {
        grid-template-columns: 1fr;
        gap: 30px;
    }
    
    /* 联系我们页面响应式 */
    .contact-layout {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    /* 产品页面响应式 */
    .products-container .container {
        flex-direction: column;
        gap: 20px;
    }
    
    .sidebar {
        width: 100%;
        position: relative;
        top: auto;
    }
    
    .category-nav {
        flex-direction: row;
        flex-wrap: wrap;
        gap: 12px;
    }
    
    .category-btn {
        text-align: center;
        align-items: center;
        flex-direction: row;
        gap: 8px;
    }
}

/* 手机设备 */
@media (max-width: 480px) {
    .slide-content h1 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .culture-grid {
        grid-template-columns: 1fr;
    }
    
    .strength-stats {
        grid-template-columns: 1fr;
    }
    
    .spirit-values {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    /* 业务服务页面响应式 */
    .service-content {
        grid-template-columns: 1fr;
        gap: 40px;
    }
    
    .service-features {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .feature-item {
        flex-direction: column;
        text-align: center;
        gap: 15px;
    }
    
    .feature-icon {
        margin: 0 auto 15px;
    }
    
    /* 产品中心页面响应式 */
    .products-grid {
        grid-template-columns: 1fr;
    }
    
    .category-nav {
        flex-direction: column;
        align-items: center;
    }
    
    .category-btn {
        width: 100%;
        max-width: 300px;
    }
    
    /* 新闻资讯页面响应式 */
    .news-item {
        flex-direction: column;
        gap: 15px;
    }
    
    .news-item:not(.featured) .news-image {
        width: 100%;
        height: 200px;
    }
    
    .news-meta {
        flex-direction: column;
        gap: 10px;
    }
    
    .news-item.featured .news-content-text h2 {
        font-size: 1.5rem;
    }
    
    .news-content-text h3 {
        font-size: 1.2rem;
    }
    
    .pagination {
        flex-wrap: wrap;
        gap: 5px;
    }
    
    .page-numbers {
        order: 2;
        width: 100%;
        justify-content: center;
        margin: 10px 0;
    }
    
    .page-btn {
        order: 1;
    }
    
    .next-btn {
        order: 3;
    }
    
    /* 联系我们页面响应式 */
    .contact-form {
        padding: 20px 15px;
    }
    
    .department-grid {
        grid-template-columns: 1fr;
    }
    
    .submit-btn {
        width: 100%;
        justify-content: center;
    }
    
    .map-placeholder {
        height: 250px;
    }
    
    .map-placeholder i {
        font-size: 2rem;
    }
    
    .map-placeholder p {
        font-size: 1rem;
    }
    
    .faq-question {
        padding: 20px;
    }
    
    .faq-question h3 {
        font-size: 1.1rem;
    }
    
    .faq-item.active .faq-answer {
        padding: 0 20px 20px;
    }
    
    /* 通用改进 */
    .page-header h1 {
        font-size: 2.5rem;
    }
    
    .value-item {
        padding: 15px 10px;
    }
    
    /* 发展历程页面响应式 */
    .timeline::before {
        left: 20px;
    }
    
    .timeline-item {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .timeline-date {
        position: relative;
        left: 0;
        transform: none;
        margin-bottom: 20px;
    }
    
    .timeline-content {
        margin: 0;
        margin-left: 40px;
    }
    
    .timeline-content::before {
        left: -40px;
        right: auto;
        border-right-color: white;
        border-left-color: transparent;
    }
}

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

.modal-content {
    background-color: #fff;
    margin: 5% auto;
    padding: 0;
    border-radius: 8px;
    width: 90%;
    max-width: 600px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.2);
    animation: slideInUp 0.3s;
}

.modal-header {
    padding: 20px 30px;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    border-radius: 8px 8px 0 0;
    position: relative;
}

.modal-header h3 {
    margin: 0;
    font-size: 24px;
}

.close {
    color: #fff;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    position: absolute;
    right: 20px;
    top: 15px;
    line-height: 1;
}

.close:hover, .close:focus {
    color: #ffd700;
    text-decoration: none;
    cursor: pointer;
}

.modal-body {
    padding: 30px;
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #333;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input[type="text"]:focus,
.form-group input[type="email"]:focus,
.form-group input[type="tel"]:focus,
.form-group textarea:focus {
    border-color: #2a5298;
    outline: none;
    box-shadow: 0 0 0 2px rgba(42, 82, 152, 0.2);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-group input[type="file"] {
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    width: 100%;
    cursor: pointer;
}

.form-group small {
    display: block;
    margin-top: 5px;
    color: #666;
    font-size: 12px;
}

.submit-btn {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    border: none;
    padding: 12px 24px;
    font-size: 16px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    width: 100%;
    margin-top: 10px;
}

.submit-btn:hover {
    background: linear-gradient(135deg, #2a5298, #3a6ac0);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 82, 152, 0.3);
}

.apply-btn {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    border: none;
    padding: 10px 20px;
    font-size: 14px;
    border-radius: 4px;
    cursor: pointer;
    transition: background 0.3s, transform 0.2s;
    margin-top: 15px;
    width: 100%;
}

.apply-btn:hover {
    background: linear-gradient(135deg, #2a5298, #3a6ac0);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(42, 82, 152, 0.3);
}