/* 
 * 重庆联锂新能源官网主样式表
 * 主色调：科技蓝 #1E88E5
 * 辅助色：深灰 #333333、浅灰 #F5F7FA
 */

/* 重置样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 根变量定义 */
:root {
    --primary-color: #1E88E5;      /* 科技蓝 */
    --secondary-color: #333333;   /* 深灰 */
    --light-gray: #F5F7FA;        /* 浅灰 */
    --white: #FFFFFF;
    --dark-blue: #1565C0;
    --light-blue: #E3F2FD;
    --success: #4CAF50;
    --warning: #FFC107;
    --danger: #F44336;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --transition: all 0.3s ease;
}

/* 基础样式 */
body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--secondary-color);
    background-color: var(--white);
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏样式 */
.navbar {
    background-color: var(--white);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

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

.logo {
    display: flex;
    align-items: center;
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--primary-color);
    text-decoration: none;
}

.logo img {
    height: 40px;
    margin-right: 10px;
}

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

.nav-menu li {
    margin-left: 2rem;
}

.nav-menu a {
    text-decoration: none;
    color: var(--secondary-color);
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

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

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

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

.hamburger span {
    width: 25px;
    height: 3px;
    background-color: var(--secondary-color);
    margin: 3px 0;
    transition: var(--transition);
}

/* 页面横幅样式 */
.hero, .page-hero {
    background: linear-gradient(135deg, var(--primary-color), var(--dark-blue));
    color: var(--white);
    padding: 10rem 0 6rem;
    text-align: center;
    position: relative;
}

.page-hero {
    padding: 8rem 0 4rem;
}

.hero-content h1, .hero-content h2 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.2s both;
}

.cta-button {
    background-color: var(--white);
    color: var(--primary-color);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 50px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: bold;
    animation: fadeInUp 1s ease 0.4s both;
}

.cta-button:hover {
    background-color: var(--light-gray);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* 特色产品展示 */
.featured-products, .product-categories, .best-sellers, .custom-service-intro, .service-types, .custom-process, .application-fields, .case-gallery, .customer-reviews, .company-profile, .mission-vision, .timeline, .team, .certifications, .contact-location, .core-advantages, .case-carousel {
    padding: 5rem 0;
}

.featured-products h2, .product-categories h2, .best-sellers h2, .custom-service-intro h2, .service-types h2, .custom-process h2, .application-fields h2, .case-gallery h2, .customer-reviews h2, .company-profile h2, .mission-vision h2, .timeline h2, .team h2, .certifications h2, .contact-location h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
    position: relative;
}

.featured-products h2::after, .product-categories h2::after, .best-sellers h2::after, .custom-service-intro h2::after, .service-types h2::after, .custom-process h2::after, .application-fields h2::after, .case-gallery h2::after, .customer-reviews h2::after, .company-profile h2::after, .mission-vision h2::after, .timeline h2::after, .team h2::after, .certifications h2::after, .contact-location h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background-color: var(--primary-color);
    border-radius: 2px;
}

.product-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
}

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

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

.product-card h3 {
    padding: 1rem;
    font-size: 1.3rem;
    color: var(--secondary-color);
}

.product-card p {
    padding: 0 1rem 1.5rem;
    color: #666;
}

/* 核心优势模块 */
.core-advantages {
    background-color: var(--light-gray);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.advantage-card .card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

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

/* 案例轮播模块 */
.case-carousel {
    background-color: var(--white);
}

.carousel-wrapper {
    position: relative;
    overflow: hidden;
    border-radius: 10px;
    margin: 2rem 0;
}

.carousel-slide {
    display: none;
    position: relative;
}

.carousel-slide.active {
    display: block;
}

.carousel-slide img {
    width: 100%;
    height: 400px;
    object-fit: cover;
}

.slide-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    padding: 3rem 2rem 1.5rem;
}

.slide-caption h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.carousel-controls {
    display: flex;
    justify-content: center;
    margin-top: 1.5rem;
}

.carousel-btn {
    background-color: var(--primary-color);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    margin: 0 0.5rem;
    transition: var(--transition);
}

.carousel-btn:hover {
    background-color: var(--dark-blue);
    transform: scale(1.1);
}

/* 产品规格标签 */
.product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    justify-content: center;
    margin: 1rem 0;
}

.product-specs span {
    background-color: var(--light-blue);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

/* 居中按钮 */
.center-btn {
    text-align: center;
    margin-top: 2rem;
}

/* 轮播图相关样式 */
@media screen and (max-width: 768px) {
    .carousel-slide img {
        height: 250px;
    }
    
    .slide-caption {
        padding: 2rem 1rem 1rem;
    }
    
    .slide-caption h3 {
        font-size: 1.2rem;
    }
}

@media screen and (max-width: 480px) {
    .carousel-slide img {
        height: 200px;
    }
    
    .advantages-grid {
        grid-template-columns: 1fr;
    }
}

/* 分类卡片 */
.category-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.category-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
    padding: 2rem 1.5rem;
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.category-card img {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.category-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.category-card p {
    color: #666;
    margin-bottom: 1rem;
}

.view-products {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    padding: 0.5rem 1.5rem;
    border-radius: 5px;
    transition: var(--transition);
}

.view-products:hover {
    background-color: var(--dark-blue);
}

/* 产品列表 */
.product-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.product-item {
    display: flex;
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.product-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.product-item img {
    width: 40%;
    height: 200px;
    object-fit: cover;
}

.product-info {
    padding: 1.5rem;
    flex: 1;
}

.product-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.product-specs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
    margin: 1rem 0;
}

.product-specs span {
    background-color: var(--light-blue);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.9rem;
}

.price {
    font-size: 1.4rem;
    font-weight: bold;
    color: var(--primary-color);
}

/* 标准型号展示 */
.standard-models {
    background-color: var(--light-gray);
}

.models-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 3rem;
}

.models-intro p {
    font-size: 1.2rem;
    color: #666;
    line-height: 1.8;
}

.product-filter {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background-color: var(--white);
    border: 1px solid #ddd;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

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

/* 产品卡片增强版 */
.product-card {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    text-align: center;
    position: relative;
}

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

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

.product-tag {
    position: absolute;
    top: 15px;
    left: 15px;
    background-color: var(--primary-color);
    color: white;
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: bold;
    z-index: 2;
}

.product-tag.new {
    background-color: #FF9800;
}

.product-card h3 {
    padding: 1rem;
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin: 0;
}

.product-specs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin: 1rem 1rem 0.5rem;
    text-align: left;
}

.product-specs span {
    background-color: var(--light-blue);
    color: var(--primary-color);
    padding: 0.4rem 0.8rem;
    border-radius: 4px;
    font-size: 0.85rem;
    display: inline-block;
}

.product-price {
    padding: 0 1rem 1rem;
}

.price {
    font-size: 1.6rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.original-price {
    font-size: 1rem;
    color: #999;
    text-decoration: line-through;
}

.product-actions {
    padding: 0 1rem 1.5rem;
    display: flex;
    gap: 1rem;
    justify-content: center;
}

.product-actions .btn {
    flex: 1;
    max-width: 120px;
}

/* 响应式调整 */
@media screen and (max-width: 768px) {
    .product-actions .btn {
        max-width: 100%;
    }
    
    .product-specs {
        gap: 0.3rem;
    }
    
    .product-specs span {
        font-size: 0.8rem;
    }
    
    .price {
        font-size: 1.4rem;
    }
}

/* 优势网格 */
.advantage-grid, .factor-grid, .mv-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-item, .factor-item, .mv-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.advantage-item:hover, .factor-item:hover, .mv-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.advantage-item h3, .factor-item h3, .mv-item h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.advantage-item p, .factor-item p, .mv-item p {
    color: #666;
}

/* 介绍内容 */
.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.intro-text h2 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.intro-text p {
    margin-bottom: 1.5rem;
    color: #666;
}

.intro-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.15);
}

/* 服务类型 */
.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.service-card {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.service-card .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.service-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--secondary-color);
}

.service-card p {
    color: #666;
    font-size: 0.95rem;
}

/* 定制优势 */
.custom-advantages {
    background-color: var(--light-gray);
}

.advantages-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.advantage-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.advantage-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.advantage-card .card-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.advantage-card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

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

/* 应用场景 */
.application-scenes {
    background-color: var(--white);
}

.scene-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.scene-item {
    text-align: center;
    padding: 2rem;
    background-color: var(--light-gray);
    border-radius: 10px;
    transition: var(--transition);
}

.scene-item:hover {
    transform: translateY(-5px);
    background-color: var(--white);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.scene-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
}

.scene-item h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

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

/* 定制流程 */
.process-steps {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.step {
    text-align: center;
    position: relative;
    padding: 2rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.step-number {
    position: absolute;
    top: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background-color: var(--primary-color);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.2rem;
}

.step h3 {
    margin: 1rem 0 0.5rem;
    color: var(--secondary-color);
    font-size: 1.2rem;
}

.step p {
    color: #666;
}

/* 应用领域 */
.field-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.field-item {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.field-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.field-item .icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.field-item h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

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

/* 案例展示 */
.case-filter {
    background-color: var(--light-gray);
    padding: 1.5rem 0;
}

.filter-options {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background-color: var(--white);
    border: 1px solid #ddd;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
}

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

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.case-item {
    background-color: var(--white);
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

.case-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.15);
}

.case-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

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

.case-item:hover .case-image img {
    transform: scale(1.1);
}

.case-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(30, 136, 229, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: var(--transition);
}

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

.case-title {
    color: var(--white);
    font-size: 1.3rem;
    font-weight: bold;
    text-align: center;
}

.case-info {
    padding: 1.5rem;
}

.case-info h3 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.case-info p {
    color: #666;
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.case-details {
    display: flex;
    flex-wrap: wrap;
    gap: 0.8rem;
}

.detail {
    background-color: var(--light-blue);
    color: var(--primary-color);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.8rem;
}

/* 案例分类 */
.case-categories {
    background-color: var(--light-gray);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.category-card {
    background-color: var(--white);
    border-radius: 10px;
    padding: 2.5rem 2rem;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.category-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.category-icon {
    font-size: 3.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.category-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--secondary-color);
}

.category-card p {
    color: #666;
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.view-more {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--primary-color);
    border-radius: 30px;
    transition: var(--transition);
}

.view-more:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* 客户证言 */
.customer-testimonials {
    background-color: var(--light-gray);
}

.testimonials-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.testimonial-card {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.testimonial-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.testimonial-content {
    margin-bottom: 1.5rem;
    position: relative;
}

.testimonial-content p {
    font-style: italic;
    color: #555;
    line-height: 1.8;
    position: relative;
}

.testimonial-content p::before {
    content: """;
    font-size: 3rem;
    position: absolute;
    top: -20px;
    left: -15px;
    color: var(--light-blue);
    opacity: 0.5;
}

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

.author-avatar {
    font-size: 2rem;
    margin-right: 1rem;
}

.author-info h4 {
    margin-bottom: 0.3rem;
    color: var(--secondary-color);
}

.author-info p {
    color: var(--primary-color);
    font-size: 0.9rem;
    margin: 0;
}

/* 更多案例按钮 */
.view-more {
    display: inline-block;
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    padding: 0.5rem 1.5rem;
    border: 2px solid var(--primary-color);
    border-radius: 30px;
    transition: var(--transition);
    margin-top: 1rem;
}

.view-more:hover {
    background-color: var(--primary-color);
    color: var(--white);
}

/* 响应式调整 */
@media screen and (max-width: 768px) {
    .categories-grid, .testimonials-grid {
        grid-template-columns: 1fr;
    }
    
    .category-card {
        padding: 2rem 1.5rem;
    }
}

/* 客户评价 */
.review-slider {
    margin-top: 3rem;
}

.review-item {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    margin-bottom: 2rem;
}

.review-content p {
    font-size: 1.1rem;
    font-style: italic;
    color: #555;
    margin-bottom: 1.5rem;
    position: relative;
}

.review-content p::before {
    content: """;
    font-size: 3rem;
    position: absolute;
    top: -20px;
    left: -15px;
    color: var(--light-blue);
    opacity: 0.5;
}

.review-author {
    display: flex;
    align-items: center;
}

.review-author img {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    margin-right: 1rem;
    object-fit: cover;
}

.author-info h4 {
    margin-bottom: 0.2rem;
    color: var(--secondary-color);
}

.author-info p {
    color: #666;
    font-size: 0.9rem;
}

/* 时间轴 */
.timeline-content {
    position: relative;
    max-width: 800px;
    margin: 4rem auto 0;
}

.timeline-content::after {
    content: '';
    position: absolute;
    width: 6px;
    background-color: var(--light-blue);
    top: 0;
    bottom: 0;
    left: 50%;
    margin-left: -3px;
    border-radius: 3px;
}

.timeline-item {
    padding: 20px 40px;
    position: relative;
    width: 50%;
    box-sizing: border-box;
}

.timeline-item:nth-child(odd) {
    left: 0;
}

.timeline-item:nth-child(even) {
    left: 50%;
}

.timeline-year {
    position: absolute;
    width: 30px;
    height: 30px;
    background-color: var(--primary-color);
    border: 4px solid var(--white);
    top: 25px;
    border-radius: 50%;
    z-index: 1;
}

.timeline-item:nth-child(odd) .timeline-year {
    right: -15px;
}

.timeline-item:nth-child(even) .timeline-year {
    left: -15px;
}

.timeline-info {
    padding: 2rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.timeline-info h3 {
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.timeline-info p {
    color: #666;
}

/* 团队成员 */
.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.team-member {
    text-align: center;
    background-color: var(--white);
    border-radius: 10px;
    padding: 2rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.team-member:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.member-image img {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1.5rem;
    border: 5px solid var(--light-blue);
}

.member-info h3 {
    font-size: 1.3rem;
    margin-bottom: 0.3rem;
    color: var(--secondary-color);
}

.position {
    color: var(--primary-color);
    font-weight: bold;
    margin-bottom: 0.5rem;
}

.bio {
    color: #666;
    font-size: 0.95rem;
}

/* 认证 */
.cert-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.cert-item {
    text-align: center;
    padding: 2rem 1rem;
    background-color: var(--white);
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: var(--transition);
}

.cert-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.cert-item .cert-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.cert-item h3 {
    font-size: 1.2rem;
    margin-bottom: 0.8rem;
    color: var(--secondary-color);
}

.cert-item p {
    color: #666;
    font-size: 0.95rem;
}

/* 联系信息 */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

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

.contact-item {
    display: flex;
    align-items: flex-start;
}

.contact-icon {
    font-size: 1.5rem;
    margin-right: 1rem;
    color: var(--primary-color);
}

.contact-text h3 {
    margin-bottom: 0.3rem;
    color: var(--secondary-color);
}

.map-placeholder {
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

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

/* 公司介绍 */
.company-intro {
    background-color: var(--light-gray);
}

/* 联系我们布局 */
.contact-section {
    background-color: var(--white);
}

.contact-layout {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-top: 3rem;
}

/* 联系表单 */
.contact-form {
    background-color: var(--white);
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

/* 微信二维码 */
.wechat-qrcode {
    text-align: center;
    margin-top: 2rem;
}

.wechat-qrcode img {
    width: 150px;
    height: 150px;
    border: 5px solid white;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    margin-bottom: 0.5rem;
}

/* 响应式调整 */
@media screen and (max-width: 768px) {
    .contact-layout {
        grid-template-columns: 1fr;
    }
    
    .intro-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

/* 统计数据 */
.profile-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.stat-item {
    text-align: center;
    padding: 1.5rem;
    background-color: var(--light-blue);
    border-radius: 10px;
}

.stat-number {
    font-size: 2.5rem;
    font-weight: bold;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--secondary-color);
}

/* 脚部 */
.footer {
    background-color: var(--secondary-color);
    color: var(--white);
    padding: 4rem 0 2rem;
    margin-top: 5rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

.footer-section h3 {
    margin-bottom: 1.5rem;
    position: relative;
    padding-bottom: 0.5rem;
}

.footer-section h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 50px;
    height: 2px;
    background-color: var(--primary-color);
}

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

.footer-section ul li {
    margin-bottom: 0.8rem;
}

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

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

.social-media {
    display: flex;
    justify-content: center;
    margin-top: 1rem;
}

.footer-bottom {
    text-align: center;
    padding-top: 3rem;
    margin-top: 3rem;
    border-top: 1px solid #444;
    color: #aaa;
    font-size: 0.9rem;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.2);
}

.submit-btn {
    background-color: var(--primary-color);
    color: var(--white);
    border: none;
    padding: 1rem 2rem;
    font-size: 1.1rem;
    border-radius: 5px;
    cursor: pointer;
    transition: var(--transition);
    width: 100%;
    font-weight: bold;
}

.submit-btn:hover {
    background-color: var(--dark-blue);
}

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

/* 按钮通用样式 */
.learn-more {
    display: inline-block;
    background-color: var(--primary-color);
    color: var(--white);
    text-decoration: none;
    padding: 0.8rem 1.8rem;
    border-radius: 5px;
    margin-top: 1.5rem;
    transition: var(--transition);
}

.learn-more:hover {
    background-color: var(--dark-blue);
    transform: translateY(-2px);
}

/* 响应式设计基础 */
@media screen and (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background-color: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: 0 10px 27px rgba(0, 0, 0, 0.05);
        padding: 2rem 0;
    }

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

    .hamburger {
        display: flex;
    }

    .hamburger.active span:nth-child(1) {
        transform: rotate(45deg) translate(6px, 6px);
    }

    .hamburger.active span:nth-child(2) {
        opacity: 0;
    }

    .hamburger.active span:nth-child(3) {
        transform: rotate(-45deg) translate(6px, -6px);
    }

    .nav-menu li {
        margin: 1.5rem 0;
    }

    .hero-content h1, .hero-content h2 {
        font-size: 2.2rem;
    }

    .featured-products h2, .product-categories h2, .best-sellers h2, .custom-service-intro h2, .service-types h2, .custom-process h2, .application-fields h2, .case-gallery h2, .customer-reviews h2, .company-profile h2, .mission-vision h2, .timeline h2, .team h2, .certifications h2, .contact-location h2 {
        font-size: 2rem;
    }

    .intro-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

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

    .timeline-content::after {
        left: 31px;
    }

    .timeline-item {
        width: 100%;
        padding-left: 70px;
        padding-right: 25px;
        left: 0 !important;
    }

    .timeline-item:nth-child(odd) .timeline-year,
    .timeline-item:nth-child(even) .timeline-year {
        left: 16px;
    }

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

@media screen and (max-width: 480px) {
    .hero, .page-hero {
        padding: 6rem 0 3rem;
    }

    .hero-content h1, .hero-content h2 {
        font-size: 1.8rem;
    }

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

    .profile-stats {
        grid-template-columns: 1fr;
    }

    .process-steps {
        grid-template-columns: 1fr;
    }

    .product-item {
        flex-direction: column;
    }

    .product-item img {
        width: 100%;
        height: 200px;
    }
}

/* ========== 信任背书模块 ========== */
.trust-section {
    background: linear-gradient(135deg, #1E88E5 0%, #1565C0 100%);
    padding: 4rem 0;
    color: var(--white);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
    text-align: center;
}

.stat-item {
    padding: 2rem 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    transition: transform 0.3s ease;
}

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

.stat-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.stat-number {
    font-size: 3rem;
    font-weight: bold;
    margin-bottom: 0.5rem;
    line-height: 1;
}

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

/* ========== 房车案例模块 ========== */
.rv-cases-section {
    padding: 5rem 0;
    background-color: var(--light-gray);
}

.rv-cases-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.section-desc {
    text-align: center;
    color: #666;
    margin-bottom: 3rem;
    font-size: 1.1rem;
}

.rv-cases-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin-bottom: 3rem;
}

.rv-case-card {
    background: var(--white);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.rv-case-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.12);
}

.rv-case-image {
    position: relative;
    height: 200px;
    overflow: hidden;
}

.rv-case-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.rv-case-badge {
    position: absolute;
    top: 15px;
    left: 15px;
    background: var(--primary-color);
    color: white;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.rv-case-content {
    padding: 1.5rem;
}

.rv-case-content h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 1rem;
}

.rv-case-specs {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 0.5rem;
}

.rv-case-specs span {
    color: var(--secondary-color);
    font-weight: 500;
}

.rv-case-result {
    font-size: 0.95rem;
    color: #333;
    background: #f0f7ff;
    padding: 0.8rem;
    border-radius: 8px;
    margin: 1rem 0;
}

.rv-case-result strong {
    color: var(--primary-color);
}

.rv-case-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.rv-case-tags .tag {
    background: #e3f2fd;
    color: var(--primary-color);
    padding: 4px 10px;
    border-radius: 15px;
    font-size: 0.8rem;
}

/* ========== SEO模块 ========== */
.seo-section {
    padding: 5rem 0;
}

.seo-section h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    color: var(--secondary-color);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
}

.faq-item {
    background: var(--white);
    border: 1px solid #e0e0e0;
    border-radius: 10px;
    overflow: hidden;
    transition: box-shadow 0.3s ease;
}

.faq-item:hover {
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.08);
}

.faq-question {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.2rem 1.5rem;
    cursor: pointer;
    font-weight: 600;
    font-size: 1.05rem;
    color: var(--secondary-color);
    background: #fafafa;
    transition: background 0.3s ease;
}

.faq-question:hover {
    background: #f0f0f0;
}

.faq-icon {
    font-size: 1.5rem;
    color: var(--primary-color);
    transition: transform 0.3s ease;
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    padding: 0 1.5rem;
}

.faq-answer p {
    margin-bottom: 0.8rem;
    line-height: 1.7;
}

.faq-answer ul {
    margin-left: 1.5rem;
    margin-bottom: 0.8rem;
}

.faq-answer li {
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

/* ========== 联系我们区域 ========== */
.contact-preview {
    padding: 5rem 0;
    background: var(--light-gray);
}

.contact-preview h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--secondary-color);
}

.contact-methods {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    max-width: 900px;
    margin: 0 auto;
}

.contact-item {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 12px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
}

.contact-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.contact-info h3 {
    font-size: 1.2rem;
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

.contact-info p {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 0.3rem;
}

/* ========== 关于我们预览 ========== */
.about-preview {
    padding: 5rem 0;
    text-align: center;
}

.about-preview h2 {
    font-size: 2.5rem;
    margin-bottom: 1.5rem;
    color: var(--secondary-color);
}

.about-preview p {
    max-width: 800px;
    margin: 0 auto 2rem;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #555;
}

.learn-more {
    display: inline-block;
    padding: 0.8rem 2rem;
    background: var(--primary-color);
    color: white;
    text-decoration: none;
    border-radius: 25px;
    font-weight: 500;
    transition: background 0.3s ease, transform 0.3s ease;
}

.learn-more:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
}

/* ========== Hero按钮 ========== */
.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

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

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

/* ========== 响应式覆盖 ========== */
/* 移动端覆盖 */
@media screen and (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr) !important;
    }

    .stat-number {
        font-size: 2.5rem;
    }

    .rv-cases-grid {
        grid-template-columns: 1fr !important;
    }

    .faq-grid {
        grid-template-columns: 1fr !important;
    }

    .contact-methods {
        grid-template-columns: 1fr !important;
    }
}