/* 优化后的基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 添加图片懒加载样式 */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

:root {
    --primary-color: #1e3a8a;
    --secondary-color: #3b82f6;
    --accent-color: #10b981;
    --text-dark: #1f2937;
    --text-light: #6b7280;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #e5e7eb;
    --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-dark);
    overflow-x: hidden;
}

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

/* 通用样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 6px;
    font-weight: 500;
    text-align: center;
    cursor: pointer;
    border: 2px solid transparent;
    transition: var(--transition);
    font-size: 14px;
}

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

.btn-primary:hover {
    background-color: #1e40af;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 16px;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background-color: var(--accent-color);
    margin: 20px auto;
    border-radius: 2px;
}

.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 600px;
    margin: 0 auto;
}

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

/* 导航栏 */
.navbar {
    background-color: var(--bg-white);
    box-shadow: var(--shadow);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.logo-img {
    height: 40px;
    margin-right: 12px;
}

.company-name {
    white-space: nowrap;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary-color);
}

.nav-menu {
    display: flex;
    list-style: none;
    align-items: center;
}

.nav-item {
    position: relative;
    margin: 0 12px;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 4px;
    transition: var(--transition);
    white-space: nowrap;
    font-size: 0.95rem;
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-color);
    background-color: var(--bg-light);
}

/* 下拉菜单 */
.dropdown,
.nav-item.dropdown {
    position: relative;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--bg-white);
    min-width: 200px;
    box-shadow: var(--shadow-lg);
    border-radius: 6px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: var(--transition);
    list-style: none;
    padding: 8px 0;
}

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

.dropdown-menu li {
    margin: 0;
}

.dropdown-menu a {
    display: block;
    padding: 8px 16px;
    color: var(--text-dark);
    text-decoration: none;
    transition: var(--transition);
}

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

/* 移动端菜单按钮 */
.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition);
}

/* 轮播图 */
.hero-section {
    position: relative;
    height: 100vh;
    overflow: hidden;
}

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

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

.slide.active {
    opacity: 1;
}

.slide-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.slide-bg::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 58, 138, 0.7);
}

.slide-content {
    position: relative;
    z-index: 10;
    height: 100%;
    display: flex;
    align-items: center;
    color: white;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
}

.hero-buttons .btn {
    padding: 15px 30px;
    font-size: 1rem;
}

.hero-buttons .btn-outline {
    border-color: white;
    color: white;
}

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

/* 轮播图控制 */
.hero-nav {
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    transform: translateY(-50%);
    z-index: 20;
    display: flex;
    justify-content: space-between;
    padding: 0 30px;
}

.hero-nav-btn {
    background-color: rgba(255, 255, 255, 0.2);
    border: none;
    color: white;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1.2rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-nav-btn:hover {
    background-color: rgba(255, 255, 255, 0.3);
}

.hero-indicators {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    z-index: 20;
}

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

.indicator.active {
    background-color: white;
}

/* 关于我们部分 */
.about-section {
    padding: 100px 0;
    background-color: var(--bg-light);
}

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

.about-text h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.about-text p {
    margin-bottom: 1.5rem;
    color: var(--text-light);
    line-height: 1.8;
}

.about-features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 2rem 0;
}

.feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.feature i {
    color: var(--accent-color);
    font-size: 1.2rem;
}

.about-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
}

/* 服务项目 */
.services-section {
    padding: 100px 0;
}

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

.service-card {
    background-color: var(--bg-white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.service-icon {
    width: 80px;
    height: 80px;
    background-color: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.service-card:hover .service-icon {
    background-color: var(--primary-color);
    color: white;
}

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

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

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

.service-card p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.service-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.service-link:hover {
    color: var(--secondary-color);
}

/* 数据统计 */
.stats-section {
    padding: 80px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* 优势特色 */
.advantages-section {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 40px;
}

.advantage-item {
    display: flex;
    align-items: flex-start;
    gap: 20px;
    padding: 30px;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.advantage-icon {
    width: 60px;
    height: 60px;
    background-color: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.advantage-icon i {
    font-size: 1.5rem;
    color: var(--primary-color);
}

.advantage-item h3 {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-dark);
}

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

/* 成功案例 */
.cases-section {
    padding: 100px 0;
}

.cases-slider {
    position: relative;
    overflow: hidden;
    margin-bottom: 40px;
    display: flex;
    transition: transform 0.5s ease;
    gap: 20px;
    flex-wrap: nowrap;
}

.case-item {
    background-color: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    flex: 0 0 calc(33.333% - 13.333px);
    min-width: 0;
}

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

.case-item img {
    width: 100%;
    height: 250px;
    object-fit: cover;
}

.case-content {
    padding: 30px;
}

.case-content h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

.cases-nav {
    display: flex;
    justify-content: center;
    gap: 20px;
    margin-bottom: 40px;
}

.cases-nav-btn {
    background-color: var(--bg-light);
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-dark);
}

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

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

/* 新闻资讯 */
.news-section {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 60px;
}

.news-item {
    background-color: var(--bg-white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.news-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
}

.news-content {
    padding: 25px;
}

.news-meta {
    display: flex;
    gap: 15px;
    margin-bottom: 15px;
}

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

.news-category {
    color: var(--primary-color);
    font-weight: 500;
}

.news-content h3 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.news-content p {
    color: var(--text-light);
    line-height: 1.6;
    margin-bottom: 1rem;
}

.news-link {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

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

/* 联系我们 */
.contact-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

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

.contact-info h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.contact-info p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    width: 30px;
}

.contact-item h4 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.contact-item p {
    opacity: 0.9;
    margin: 0;
}

.contact-form {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 40px;
    border-radius: 10px;
    backdrop-filter: blur(10px);
}

.contact-form h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
    margin-bottom: 15px;
}

.contact-form input,
.contact-form textarea {
    padding: 12px 15px;
    border: none;
    border-radius: 6px;
    background-color: rgba(255, 255, 255, 0.9);
    color: var(--text-dark);
    font-size: 1rem;
    transition: var(--transition);
}

.contact-form input:focus,
.contact-form textarea:focus {
    outline: none;
    background-color: white;
    box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.3);
}

.contact-form textarea {
    resize: vertical;
    margin-bottom: 20px;
}

/* 页脚 */
.footer {
    background-color: var(--text-dark);
    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-logo {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.footer-logo img {
    height: 40px;
    margin-right: 12px;
}

.footer-logo h3 {
    font-size: 1.2rem;
}

.footer-section h4 {
    font-size: 1.1rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

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

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: #d1d5db;
    text-decoration: none;
    transition: var(--transition);
}

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

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 1rem;
}

.social-links a {
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: var(--transition);
}

.social-links a:hover {
    background-color: var(--accent-color);
    transform: translateY(-2px);
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 20px;
    text-align: center;
    color: #9ca3af;
}

.footer-bottom a {
    color: var(--accent-color);
    text-decoration: none;
}

/* 回到顶部按钮 */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    background-color: var(--primary-color);
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    z-index: 1000;
}

.back-to-top.show {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
}

/* 动画效果 */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* 页面头部样式 */
.page-header {
    height: 300px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    display: flex;
    align-items: center;
    color: white;
    margin-top: 80px;
}

.page-header-content {
    text-align: center;
}

.page-header h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.breadcrumb {
    font-size: 1.1rem;
    opacity: 0.9;
}

.breadcrumb a {
    color: white;
    text-decoration: none;
    transition: var(--transition);
}

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

.breadcrumb span {
    margin: 0 10px;
}

/* 公司简介样式 */
.company-intro {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.intro-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 60px;
    align-items: center;
}

.intro-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.intro-text h3 {
    font-size: 1.5rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    font-weight: 500;
}

.intro-text p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-light);
    text-align: justify;
}

.intro-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: var(--shadow-lg);
}

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

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

.culture-item {
    text-align: center;
    padding: 40px 20px;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.culture-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.culture-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.culture-icon i {
    font-size: 2rem;
    color: white;
}

.culture-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* 发展历程 */
.company-history {
    padding: 100px 0;
    background-color: var(--bg-light);
}

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

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    top: 0;
    bottom: 0;
    width: 4px;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    display: flex;
    align-items: center;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-year {
    flex: 0 0 100px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-color);
    background-color: var(--bg-white);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    z-index: 10;
}

.timeline-content {
    flex: 1;
    padding: 20px 30px;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    margin: 0 30px;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 0;
    height: 0;
    border: 15px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    left: -30px;
    border-right-color: var(--bg-white);
}

.timeline-item:nth-child(even) .timeline-content::before {
    right: -30px;
    border-left-color: var(--bg-white);
}

.timeline-content h3 {
    font-size: 1.25rem;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

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

/* 资质荣誉 */
.company-honors {
    padding: 100px 0;
}

.honors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.honor-category {
    background-color: var(--bg-white);
    padding: 40px 30px;
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

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

.honor-category h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 2px solid var(--bg-light);
}

.honor-category ul {
    list-style: none;
}

.honor-category li {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
    padding: 10px;
    background-color: var(--bg-light);
    border-radius: 6px;
    transition: var(--transition);
}

.honor-category li:hover {
    background-color: var(--primary-color);
    color: white;
}

.honor-category li i {
    margin-right: 10px;
    color: var(--accent-color);
    width: 20px;
}

.honor-category li:hover i {
    color: var(--accent-color);
}

/* 核心团队 */
.company-team {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.team-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 40px;
    margin-bottom: 60px;
}

.team-stat {
    text-align: center;
    padding: 30px;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.team-stat .stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.team-stat .stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
}

.team-description {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.team-description p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-light);
    font-size: 1.1rem;
}

/* 服务承诺 */
.service-commitment {
    padding: 100px 0;
}

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

.commitment-item {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 10px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.commitment-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.commitment-icon {
    width: 80px;
    height: 80px;
    background-color: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.commitment-item:hover .commitment-icon {
    background-color: var(--primary-color);
}

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

.commitment-item:hover .commitment-icon i {
    color: white;
}

.commitment-item h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

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

/* 服务页面样式 */
.services-overview {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.overview-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.overview-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
}

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

.service-detail.alt-bg {
    background-color: var(--bg-light);
}

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

.service-content.reverse {
    direction: rtl;
}

.service-content.reverse > * {
    direction: ltr;
}

.service-header {
    display: flex;
    align-items: center;
    margin-bottom: 2rem;
}

.service-header .service-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 20px;
}

.service-header .service-icon i {
    font-size: 2.5rem;
    color: white;
}

.service-header h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin: 0;
}

.service-intro {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.service-text h3 {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin: 2rem 0 1rem 0;
}

.service-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 15px;
    margin: 1.5rem 0;
}

.feature-item {
    display: flex;
    align-items: center;
    padding: 12px 15px;
    background-color: var(--bg-light);
    border-radius: 8px;
    transition: var(--transition);
}

.feature-item:hover {
    background-color: var(--primary-color);
    color: white;
}

.feature-item i {
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.1rem;
}

.feature-item:hover i {
    color: var(--accent-color);
}

.tech-standards {
    list-style: none;
    margin: 1.5rem 0;
}

.tech-standards li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    position: relative;
    padding-left: 20px;
}

.tech-standards li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

.service-image {
    position: relative;
}

.service-image img {
    width: 100%;
    border-radius: 15px;
    box-shadow: var(--shadow-lg);
}

.image-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    color: white;
    padding: 30px 20px 20px;
    border-radius: 0 0 15px 15px;
    font-weight: 500;
}

/* 服务流程 */
.service-process {
    padding: 100px 0;
    background-color: var(--bg-light);
}

.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 40px;
}

.process-step {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.process-step:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 20px;
}

.step-content h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

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

/* 服务保障 */
.service-guarantee {
    padding: 100px 0;
}

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

.guarantee-item {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.guarantee-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.guarantee-icon {
    width: 80px;
    height: 80px;
    background-color: var(--bg-light);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    transition: var(--transition);
}

.guarantee-item:hover .guarantee-icon {
    background-color: var(--primary-color);
}

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

.guarantee-item:hover .guarantee-icon i {
    color: white;
}

.guarantee-item h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

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

/* 联系咨询 */
.service-contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.service-contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-contact p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.contact-actions .btn {
    padding: 15px 30px;
    font-size: 1.1rem;
}

.contact-actions .btn-outline {
    border-color: white;
    color: white;
}

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

/* 联系页面样式 */
.contact-info-section {
    padding: 80px 0;
}

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

.contact-card {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.contact-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.contact-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
}

.contact-icon i {
    font-size: 2rem;
    color: white;
}

.contact-card h3 {
    font-size: 1.5rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

.contact-card p {
    color: var(--text-light);
    margin-bottom: 5px;
}

.contact-card a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.contact-card a:hover {
    color: var(--secondary-color);
}

/* 在线咨询表单 */
.contact-form-section {
    padding: 100px 0;
    background-color: var(--bg-light);
}

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

.form-left h2 {
    font-size: 2.5rem;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.form-left p {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.8;
    margin-bottom: 2rem;
}

.form-features {
    margin-bottom: 2rem;
}

.form-feature {
    display: flex;
    align-items: center;
    margin-bottom: 15px;
}

.form-feature i {
    color: var(--accent-color);
    margin-right: 10px;
    font-size: 1.1rem;
}

.response-time {
    background-color: var(--bg-white);
    padding: 25px;
    border-radius: 10px;
    box-shadow: var(--shadow);
}

.response-time h3 {
    color: var(--primary-color);
    margin-bottom: 15px;
}

.response-time ul {
    list-style: none;
}

.response-time li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
}

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

.consultation-form {
    background-color: var(--bg-white);
    padding: 40px;
    border-radius: 15px;
    box-shadow: var(--shadow);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 15px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    background-color: var(--bg-white);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

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

.checkbox-group {
    display: flex;
    align-items: flex-start;
    line-height: 1.6;
    /* 确保有足够的宽度显示整个复选框组 */
    width: 100%;
    /* 防止内容溢出 */
    overflow: visible;
    /* 修复 - 重置所有内边距和外边距 */
    padding: 0;
    margin: 0;
}

.checkbox-label {
    font-size: 0.9rem;
    line-height: 1.6;
    /* 确保标签有足够的宽度显示完整文本 */
    width: 100%;
    /* 防止文本换行时与复选框重叠 */
    padding-top: 2px;
    /* 修复 - 确保没有额外的内边距 */
    padding-left: 0;
    margin-left: 0;
    /* 修复 - 确保标签本身没有内边距 */
    padding: 0;
    margin: 0;
    /* 修复 - 确保label作为flex容器正确排列内容 */
    display: flex;
    align-items: flex-start;
}

.checkbox-label input[type="checkbox"] {
    display: none;
}

.checkmark {
    /* 调整为合适的尺寸 - 增加宽度以确保完全显示 */
    width: 24px;
    height: 20px;
    /* 确保边框可见 */
    border: 2px solid var(--border-color);
    border-radius: 4px;
    /* 确保与文本有足够间距 */
    margin-right: 10px;
    /* 调整垂直对齐 */
    margin-top: 2px;
    /* 确保定位正确 */
    position: relative;
    /* 确保在所有浏览器中一致显示 */
    box-sizing: border-box;
    /* 添加过渡效果 */
    transition: var(--transition);
    /* 防止被压缩 */
    flex-shrink: 0;
    /* 确保复选框在最上层显示 */
    z-index: 1;
    /* 确保左侧没有额外间距 */
    margin-left: 0;
    padding-left: 0;
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
    /* 确保勾选符号在宽一点的复选框中正确居中 */
    width: 100%;
    text-align: center;
}

.checkbox-label a {
    color: var(--primary-color);
    text-decoration: none;
}

.checkbox-label a:hover {
    text-decoration: underline;
}

.btn-submit {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    margin-top: 10px;
}

/* 公司位置 */
.location-section {
    padding: 100px 0;
}

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

.location-info h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 20px;
}

.transport-methods {
    margin-bottom: 40px;
}

.transport-item {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
    padding: 20px;
    background-color: var(--bg-light);
    border-radius: 10px;
}

.transport-item i {
    font-size: 2rem;
    color: var(--primary-color);
    margin-right: 20px;
    width: 40px;
}

.transport-item h4 {
    color: var(--text-dark);
    margin-bottom: 5px;
}

.transport-item p {
    color: var(--text-light);
    margin: 0;
}

.nearby-landmarks ul {
    list-style: none;
}

.nearby-landmarks li {
    padding: 8px 0;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-light);
    position: relative;
    padding-left: 20px;
}

.nearby-landmarks li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-weight: bold;
}

.map-container {
    background-color: var(--bg-light);
    border-radius: 15px;
    overflow: hidden;
    height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.map-placeholder {
    text-align: center;
    color: var(--text-light);
}

.map-placeholder i {
    font-size: 4rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.map-placeholder h3 {
    margin-bottom: 10px;
    color: var(--text-dark);
}

.map-placeholder p {
    margin-bottom: 20px;
}

/* 联系优势 */
.contact-advantages {
    padding: 100px 0;
    background-color: var(--bg-light);
}

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

.advantage-card {
    text-align: center;
    padding: 40px 30px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.advantage-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 15px;
}

.advantage-card h3 {
    font-size: 1.25rem;
    color: var(--text-dark);
    margin-bottom: 15px;
}

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

/* FAQ 部分 */
.faq-section {
    padding: 100px 0;
}

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

.faq-item {
    background-color: var(--bg-white);
    border-radius: 10px;
    margin-bottom: 15px;
    box-shadow: var(--shadow);
    overflow: hidden;
    transition: var(--transition);
}

.faq-question {
    padding: 25px 30px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.faq-question:hover {
    background-color: var(--bg-light);
}

.faq-question h3 {
    font-size: 1.1rem;
    color: var(--text-dark);
    margin: 0;
}

.faq-question i {
    font-size: 1.2rem;
    color: var(--primary-color);
    transition: var(--transition);
}

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

.faq-answer p {
    padding: 0 30px 25px;
    color: var(--text-light);
    line-height: 1.6;
    margin: 0;
}

.faq-item.active .faq-question {
    background-color: var(--bg-light);
}

/* 工程案例页面样式 */
.cases-overview {
    padding: 80px 0;
    background-color: var(--bg-light);
}

.overview-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    margin-top: 40px;
}

.stat-card {
    text-align: center;
    padding: 30px 20px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.stat-card .stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
}

.stat-card .stat-label {
    font-size: 1.1rem;
    color: var(--text-light);
}

/* 案例筛选 */
.cases-filter {
    padding: 60px 0;
}

.filter-tabs {
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 12px 24px;
    border: 2px solid var(--border-color);
    background-color: var(--bg-white);
    color: var(--text-dark);
    border-radius: 25px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

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

/* 案例展示 */
.cases-gallery {
    padding: 60px 0 100px;
}

.cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
}

.case-item {
    background-color: var(--bg-white);
    border-radius: 15px;
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    opacity: 1;
    transform: translateY(0);
}

.case-item:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg);
}

.case-image {
    position: relative;
    overflow: hidden;
}

.case-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    transition: var(--transition);
}

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

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 40%, rgba(30, 58, 138, 0.9));
    display: flex;
    align-items: flex-end;
    padding: 30px;
    opacity: 0;
    transition: var(--transition);
}

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

.case-info {
    color: white;
}

.case-info h3 {
    font-size: 1.25rem;
    margin-bottom: 10px;
}

.case-info p {
    margin-bottom: 15px;
    opacity: 0.9;
}

.view-detail {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.view-detail:hover {
    color: white;
}

.case-content {
    padding: 25px;
}

.case-category {
    display: inline-block;
    padding: 6px 12px;
    background-color: var(--bg-light);
    color: var(--primary-color);
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 500;
    margin-bottom: 15px;
}

.case-content h3 {
    font-size: 1.25rem;
    margin-bottom: 15px;
    color: var(--text-dark);
}

.case-details {
    display: flex;
    gap: 15px;
    font-size: 0.9rem;
    color: var(--text-light);
    flex-wrap: wrap;
}

.case-details span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.case-details i {
    color: var(--primary-color);
}

/* 客户评价 */
.client-testimonials {
    padding: 100px 0;
    background-color: var(--bg-light);
}

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

.testimonial-item {
    background-color: var(--bg-white);
    padding: 40px 30px;
    border-radius: 15px;
    box-shadow: var(--shadow);
    transition: var(--transition);
    position: relative;
}

.testimonial-item::before {
    content: '"';
    position: absolute;
    top: -10px;
    left: 30px;
    font-size: 4rem;
    color: var(--primary-color);
    opacity: 0.3;
    font-weight: bold;
}

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

.testimonial-content p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
    margin-bottom: 25px;
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: 15px;
}

.author-info h4 {
    color: var(--primary-color);
    margin-bottom: 5px;
}

.author-info span {
    color: var(--text-light);
    font-size: 0.9rem;
}

/* 合作流程 */
.cooperation-process {
    padding: 100px 0;
}

.process-timeline {
    position: relative;
    max-width: 1000px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: linear-gradient(to bottom, var(--primary-color), var(--secondary-color));
}

.timeline-item {
    display: flex;
    align-items: center;
    margin-bottom: 60px;
    position: relative;
}

.timeline-item:nth-child(odd) {
    flex-direction: row;
}

.timeline-item:nth-child(even) {
    flex-direction: row-reverse;
}

.timeline-marker {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
    font-weight: 700;
    position: relative;
    z-index: 10;
    box-shadow: 0 0 0 5px var(--bg-white);
}

.timeline-content {
    flex: 1;
    max-width: 400px;
    padding: 25px 30px;
    background-color: var(--bg-white);
    border-radius: 15px;
    box-shadow: var(--shadow);
    margin: 0 40px;
    position: relative;
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: 30px;
    width: 0;
    height: 0;
    border: 15px solid transparent;
}

.timeline-item:nth-child(odd) .timeline-content::before {
    left: -30px;
    border-right-color: var(--bg-white);
}

.timeline-item:nth-child(even) .timeline-content::before {
    right: -30px;
    border-left-color: var(--bg-white);
}

.timeline-content h3 {
    color: var(--primary-color);
    font-size: 1.25rem;
    margin-bottom: 10px;
}

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

/* 案例联系 */
.cases-contact {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
    text-align: center;
}

.cases-contact h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cases-contact p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    opacity: 0.9;
}

.contact-actions {
    display: flex;
    justify-content: center;
    gap: 20px;
}

.contact-actions .btn {
    padding: 15px 30px;
    font-size: 1.1rem;
}

.contact-actions .btn-outline {
    border-color: white;
    color: white;
}

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

/* 滚动条样式 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: var(--primary-color);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--secondary-color);
}