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

body {
    font-family: 'Arial', sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 导航栏 */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    z-index: 1000;
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.logo a {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    text-decoration: none;
    text-transform: uppercase;
    letter-spacing: 2px;
}

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

.nav-menu li {
    margin-left: 30px;
}

.nav-menu a {
    color: #333;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s;
}

.nav-menu a:hover {
    color: #e60012;
}

/* 管理后台链接样式 */
.admin-link {
    color: #007bff !important;
    font-weight: bold;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.admin-link:hover {
    color: #0056b3 !important;
    background-color: rgba(0, 123, 255, 0.1);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
}

.admin-link::after {
    content: '⚙️';
    margin-left: 0.5rem;
    font-size: 1rem;
}

/* 响应式设计调整 */
@media (max-width: 768px) {
    .admin-link {
        padding: 0.5rem;
        font-size: 0.9rem;
    }
    
    .admin-link::after {
        font-size: 0.9rem;
    }
}

.nav-actions .btn {
    padding: 10px 20px;
    background-color: #333;
    color: white;
    text-decoration: none;
    border-radius: 4px;
    transition: background-color 0.3s;
}

.nav-actions .btn:hover {
    background-color: #e60012;
}

/* 按钮样式 */
.btn {
    display: inline-block;
    padding: 12px 24px;
    text-decoration: none;
    border-radius: 4px;
    font-weight: 500;
    transition: all 0.3s;
}

.btn-primary {
    background-color: #e60012;
    color: white;
}

.btn-primary:hover {
    background-color: #c00010;
    transform: translateY(-2px);
}

.btn-secondary {
    background-color: transparent;
    color: #333;
    border: 2px solid #333;
}

.btn-secondary:hover {
    background-color: #333;
    color: white;
}

/* 英雄区域 */
.hero {
    position: relative;
    height: 100vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding: 0 20px;
}

.hero-content h1 {
    font-size: 48px;
    font-weight: bold;
    margin-bottom: 20px;
    color: white;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

.hero-content p {
    font-size: 18px;
    margin-bottom: 30px;
    color: white;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
    display: flex;
    gap: 20px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* 品牌展示 */
.brands {
    padding: 100px 0;
    background-color: white;
}

.brands h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.brands-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 40px;
}

.brand-item {
    text-align: center;
    transition: transform 0.3s;
}

.brand-item:hover {
    transform: translateY(-10px);
}

.brand-item img {
    width: 200px;
    height: 200px;
    object-fit: contain;
    margin-bottom: 20px;
}

.brand-item h3 {
    font-size: 24px;
    color: #333;
}

.brand-item a {
    text-decoration: none;
    color: inherit;
}

/* 汽车展示 */
.car-showcase {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.car-showcase:nth-child(even) {
    background-color: white;
}

.car-showcase h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.car-model {
    background-color: white;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    margin-bottom: 2rem;
    transition: all 0.3s ease;
}

.car-model:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 24px rgba(0, 123, 255, 0.15);
}

/* 确保车型容器在没有数据时也能保持良好的布局 */
.car-model h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #333;
    padding: 1.5rem;
    background-color: #f8f9fa;
    border-bottom: 1px solid #e9ecef;
}

/* 确保图片画廊在不同数量的图片下都能保持良好的布局 */
.car-gallery {
    padding: 0 1.5rem 1.5rem;
}

.gallery-main {
    margin-bottom: 1rem;
    aspect-ratio: 16/9;
    overflow: hidden;
    border-radius: 8px;
}

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

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

.gallery-thumbs {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
    gap: 0.5rem;
}

.gallery-thumbs img {
    width: 100%;
    aspect-ratio: 1;
    object-fit: cover;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.gallery-thumbs img:hover {
    transform: scale(1.1);
    border-color: #007bff;
}

.gallery-thumbs img.active {
    border-color: #007bff;
    box-shadow: 0 0 0 2px rgba(0, 123, 255, 0.2);
}

/* 确保技术参数在不同数量的参数下都能保持良好的布局 */
.specs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.spec-item {
    display: flex;
    justify-content: space-between;
    padding: 1rem;
    background-color: #f8f9fa;
    border-radius: 6px;
    transition: all 0.3s ease;
}

.spec-item:hover {
    background-color: #e9ecef;
    transform: translateY(-2px);
}

/* 确保配置特征在不同数量的特征下都能保持良好的布局 */
.features-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.feature-item {
    background-color: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
    border: 1px solid #e9ecef;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.1);
    border-color: #007bff;
}

.feature-item img {
    width: 100%;
    height: 150px;
    object-fit: cover;
    border-radius: 6px;
    margin-bottom: 1rem;
}

.feature-item h5 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
    color: #333;
}

.feature-item p {
    margin: 0;
    color: #666;
    line-height: 1.5;
}

/* 确保价格信息在不同情况下都能保持良好的布局 */
.price {
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid #e9ecef;
}

.price span {
    font-size: 1rem;
    color: #666;
}

.price strong {
    font-size: 1.5rem;
    color: #007bff;
    margin-left: 0.5rem;
}

/* 确保英雄区域在不同情况下都能保持良好的布局 */
.hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 600px;
    padding: 0 20px;
}

.hero-bg {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 1;
}

.hero-bg img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.hero:hover .hero-bg img {
    transform: scale(1.05);
}

/* 确保品牌展示区域在不同情况下都能保持良好的布局 */
.car-showcase {
    padding: 3rem 0;
    background-color: #f9f9f9;
}

.car-showcase:nth-child(even) {
    background-color: white;
}

.car-showcase h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: #333;
}

/* 响应式设计调整 */
@media (max-width: 768px) {
    .specs-grid {
        grid-template-columns: 1fr;
    }
    
    .features-gallery {
        grid-template-columns: 1fr;
    }
    
    .gallery-thumbs {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .car-model h3 {
        font-size: 1.5rem;
        padding: 1rem;
    }
    
    .car-gallery {
        padding: 0 1rem 1rem;
    }
    
    .car-info {
        padding: 1rem;
    }
    
    .hero {
        min-height: 50vh;
    }
    
    .hero-content h1 {
        font-size: 2.5rem;
    }
    
    .car-showcase h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
}

@media (max-width: 480px) {
    .car-model h3 {
        font-size: 1.2rem;
    }
    
    .price strong {
        font-size: 1.2rem;
    }
    
    .hero-content h1 {
        font-size: 2rem;
    }
    
    .car-showcase h2 {
        font-size: 1.8rem;
    }
}

/* 这些样式已经在前面定义过，这里不再重复定义 */

/* 这些样式已经在前面定义过，这里不再重复定义 */

/* 关于我们 */
.about {
    padding: 100px 0;
    background-color: white;
}

.about h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.about-content {
    display: flex;
    gap: 40px;
    align-items: center;
    margin-bottom: 60px;
}

.about-image {
    flex: 1;
}

.about-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 8px;
}

.about-text {
    flex: 1;
}

.about-text h3 {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
}

.about-text p {
    margin-bottom: 20px;
    color: #666;
    line-height: 1.6;
}

.about-text ul {
    margin-bottom: 30px;
    padding-left: 20px;
}

.about-text li {
    margin-bottom: 10px;
    color: #666;
    line-height: 1.6;
}

.about-tagline {
    font-size: 18px;
    font-weight: bold;
    color: #e60012;
    margin-top: 30px;
}

/* 联系我们 */
.contact {
    padding: 100px 0;
    background-color: #f9f9f9;
}

.contact h2 {
    text-align: center;
    font-size: 36px;
    margin-bottom: 60px;
    color: #333;
}

.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #e60012;
    box-shadow: 0 0 0 2px rgba(230, 0, 18, 0.1);
}

.contact-form button {
    width: 100%;
    padding: 15px;
    font-size: 16px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

/* 关于我们页面样式 */
.about-hero {
    background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('https://trae-api-cn.mchost.guru/api/ide/v1/text_to_image?prompt=modern%20car%20showroom%20interior%20with%20luxury%20design&image_size=landscape_16_9');
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 150px 20px;
    position: relative;
    overflow: hidden;
}

.about-hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, rgba(230, 0, 18, 0.2), rgba(0, 0, 0, 0.3));
    z-index: 1;
}

.about-hero .hero-content {
    position: relative;
    z-index: 2;
}

.about-hero h2 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.about-hero p {
    font-size: 1.5rem;
    max-width: 800px;
    margin: 0 auto;
}

/* 条状背景布局 */
.about-strips {
    padding: 0;
}

.strip-container {
    background-color: #f9f9f9;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.strip-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(230, 0, 18, 0.05), rgba(0, 0, 0, 0.05));
    z-index: 1;
}

.strip-container.alternate {
    background-color: white;
}

.strip-container.alternate::before {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.05), rgba(230, 0, 18, 0.05));
}

.strip-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 40px;
    position: relative;
    z-index: 2;
}

.strip-text {
    flex: 1;
    padding: 0 40px;
}

.strip-image {
    flex: 1;
    padding: 0 40px;
}

.strip-image img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

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

.strip-container.alternate .strip-content {
    flex-direction: row-reverse;
}

.strip-text h3 {
    font-size: 2.5rem;
    margin-bottom: 30px;
    color: #333;
    position: relative;
    padding-bottom: 20px;
}

.strip-text h3::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 4px;
    background-color: #e60012;
}

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

/* 开发者介绍样式 */
.dev-profile {
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.dev-profile h4 {
    font-size: 1.8rem;
    margin-bottom: 10px;
    color: #333;
}

.dev-profile p {
    margin-bottom: 25px;
    color: #666;
}

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

.skill-category {
    background-color: #f5f5f5;
    padding: 20px;
    border-radius: 8px;
}

.skill-category h5 {
    font-size: 1.1rem;
    margin-bottom: 10px;
    color: #333;
}

.skill-category p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
}

/* 项目愿景样式 */
.vision-goals {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.goal-item {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.goal-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.goal-icon {
    font-size: 2.5rem;
    margin-bottom: 20px;
}

.goal-item p {
    margin: 0;
    color: #666;
    font-size: 1rem;
}

/* 技术架构样式 */
.tech-architecture {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.arch-layer {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.arch-layer h4 {
    font-size: 1.3rem;
    margin-bottom: 20px;
    color: #333;
    border-bottom: 2px solid #e60012;
    padding-bottom: 10px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.tech-item {
    background-color: #f5f5f5;
    padding: 10px 20px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: #333;
    font-weight: 500;
}

/* 团队文化样式 */
.culture-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 25px;
}

.value-item {
    background-color: #f5f5f5;
    padding: 30px;
    border-radius: 10px;
    transition: transform 0.3s ease;
}

.value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.value-item h5 {
    font-size: 1.2rem;
    margin-bottom: 15px;
    color: #333;
    text-align: center;
}

.value-item p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    text-align: center;
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .about-hero h2 {
        font-size: 2.5rem;
    }

    .about-hero p {
        font-size: 1.2rem;
    }

    .strip-content {
        flex-direction: column;
        padding: 0 20px;
    }

    .strip-container.alternate .strip-content {
        flex-direction: column;
    }

    .strip-text,
    .strip-image {
        padding: 20px 0;
        width: 100%;
    }

    .strip-image img {
        height: 300px;
    }

    .strip-text h3 {
        font-size: 2rem;
        text-align: center;
    }

    .strip-text h3::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .tech-skills,
    .vision-goals,
    .culture-values {
        grid-template-columns: 1fr;
    }

    .dev-profile {
        padding: 30px;
    }

    .arch-layer {
        padding: 20px;
    }
}

@media screen and (min-width: 769px) and (max-width: 1024px) {
    .strip-content {
        padding: 0 30px;
    }

    .strip-text,
    .strip-image {
        padding: 0 20px;
    }

    .strip-image img {
        height: 350px;
    }

    .strip-text h3 {
        font-size: 2rem;
    }
}

/* 联系我们页面样式 */
.contact-hero {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    background-size: cover;
    background-position: center;
    color: white;
    text-align: center;
    padding: 4rem 0;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.contact-hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.contact-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.contact-content {
    padding: 2rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.contact-form {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.1);
    border: 1px solid rgba(0, 123, 255, 0.2);
    margin-bottom: 2rem;
}

.contact-form h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #007bff;
    border-bottom: 2px solid #007bff;
    padding-bottom: 0.5rem;
    display: inline-block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #495057;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #007bff;
    border-radius: 6px;
    font-size: 1rem;
    background: white;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #0056b3;
    box-shadow: 0 0 0 3px rgba(0, 123, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-info {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.1);
    border: 1px solid rgba(0, 123, 255, 0.2);
}

.contact-info h3 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    color: #007bff;
    border-bottom: 2px solid #007bff;
    padding-bottom: 0.5rem;
    display: inline-block;
}

.info-item {
    margin-bottom: 1.5rem;
    padding-left: 1rem;
    border-left: 3px solid #007bff;
}

.info-item h4 {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    color: #007bff;
}

.info-item p {
    color: #495057;
    margin-bottom: 0.5rem;
}

/* 车型选择弹出框样式 */
.model-selector {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.model-selector-content {
    background-color: #fefefe;
    margin: 5% auto;
    padding: 30px;
    border: 1px solid #888;
    width: 90%;
    max-width: 1200px;
    max-height: 80vh;
    overflow-y: auto;
    border-radius: 10px;
}

.model-selector-content .close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.model-selector-content .close:hover,
.model-selector-content .close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}

.model-selector-content h3 {
    font-size: 2rem;
    margin-bottom: 30px;
    color: #333;
}

.model-tabs {
    display: flex;
    margin-bottom: 30px;
    border-bottom: 1px solid #ddd;
}

.tab-btn {
    background-color: #f1f1f1;
    border: none;
    outline: none;
    cursor: pointer;
    padding: 14px 16px;
    transition: 0.3s;
    font-size: 1rem;
    font-weight: 500;
}

.tab-btn:hover {
    background-color: #ddd;
}

.tab-btn.active {
    background-color: #e60012;
    color: white;
}

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

.model-item {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s;
}

.model-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.model-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 20px;
}

.model-item h4 {
    font-size: 1.2rem;
    margin-bottom: 10px;
    color: #333;
}

.model-item p {
    margin-bottom: 20px;
    color: #666;
}

.select-model-btn {
    background-color: #e60012;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.select-model-btn:hover {
    background-color: #c00010;
}

.model-details {
    margin-top: 40px;
}

.model-details h4 {
    font-size: 1.5rem;
    margin-bottom: 20px;
    color: #333;
}

.model-image-container {
    margin-bottom: 30px;
}

.model-image-container img {
    width: 100%;
    height: 400px;
    object-fit: cover;
    border-radius: 10px;
}

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

.model-specs h5 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #333;
}

.model-specs-list {
    list-style: none;
    padding: 0;
}

.model-specs-list li {
    margin-bottom: 10px;
    padding: 10px;
    background-color: #f9f9f9;
    border-radius: 5px;
    display: flex;
    justify-content: space-between;
}

.model-specs-list li span:first-child {
    font-weight: 500;
    color: #333;
}

.model-specs-list li span:last-child {
    color: #666;
}

.model-customization {
    margin-bottom: 40px;
}

.model-customization h5 {
    font-size: 1.2rem;
    margin-bottom: 20px;
    color: #333;
}

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

.customization-section h6 {
    font-size: 1rem;
    margin-bottom: 15px;
    color: #333;
}

.color-options,
.wheel-options,
.interior-options {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
}

.color-option,
.wheel-option,
.interior-option {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    cursor: pointer;
    border: 2px solid transparent;
    transition: border-color 0.3s;
}

.color-option:hover,
.wheel-option:hover,
.interior-option:hover {
    border-color: #e60012;
}

.color-option.selected,
.wheel-option.selected,
.interior-option.selected {
    border-color: #e60012;
    box-shadow: 0 0 0 2px rgba(230, 0, 18, 0.2);
}

.model-actions {
    display: flex;
    gap: 20px;
    justify-content: flex-end;
}

.back-btn {
    background-color: #f1f1f1;
    color: #333;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.back-btn:hover {
    background-color: #ddd;
}

.confirm-btn {
    background-color: #e60012;
    color: white;
    border: none;
    padding: 12px 24px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.3s;
}

.confirm-btn:hover {
    background-color: #c00010;
}

/* 页脚 */
.footer {
    background-color: #333;
    color: white;
    padding: 60px 0 30px;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(230, 0, 18, 0.1), rgba(0, 0, 0, 0.1));
    z-index: 1;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 60px;
    margin-bottom: 40px;
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 40px;
}

.footer-brand {
    grid-column: 1 / -1;
    text-align: center;
    margin-bottom: 40px;
}

.footer-brand h2 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 3px;
    color: white;
}

.footer-brand p {
    font-size: 1.1rem;
    color: #999;
    margin: 0;
}

.footer-links h4,
.footer-contact h4 {
    font-size: 1.3rem;
    margin-bottom: 25px;
    color: white;
    text-transform: uppercase;
    letter-spacing: 1px;
    position: relative;
    padding-bottom: 15px;
}

.footer-links h4::after,
.footer-contact h4::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background-color: #e60012;
}

.footer-links ul,
.footer-contact ul {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 15px;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    transition: all 0.3s ease;
    display: inline-block;
    position: relative;
    padding-left: 20px;
}

.footer-links a::before {
    content: '→';
    position: absolute;
    left: 0;
    color: #e60012;
    transition: transform 0.3s ease;
}

.footer-links a:hover {
    color: white;
    transform: translateX(5px);
}

.footer-links a:hover::before {
    transform: translateX(5px);
}

.footer-contact li {
    color: #999;
    margin-bottom: 15px;
    display: flex;
    align-items: center;
    position: relative;
    padding-left: 30px;
}

.footer-contact li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background-color: #e60012;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 12px;
}

.footer-contact li:nth-child(1)::before {
    content: '📞';
    background: none;
    font-size: 16px;
}

.footer-contact li:nth-child(2)::before {
    content: '📧';
    background: none;
    font-size: 16px;
}

.footer-contact li:nth-child(3)::before {
    content: '📍';
    background: none;
    font-size: 16px;
}

.footer-bottom {
    text-align: center;
    padding-top: 40px;
    border-top: 1px solid #444;
    color: #999;
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding-left: 40px;
    padding-right: 40px;
}

.footer-bottom p {
    margin: 0;
    font-size: 0.95rem;
    letter-spacing: 1px;
}

.footer-bottom .beian-info {
    margin-top: 12px;
    color: #999;
}

.footer-bottom .beian-info a {
    color: #aaa;
}

.footer-bottom .beian-info a:hover {
    color: #fff;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .footer-content {
        grid-template-columns: 1fr;
        padding: 0 20px;
        gap: 40px;
    }

    .footer-brand h2 {
        font-size: 2rem;
    }

    .footer-links h4,
    .footer-contact h4 {
        font-size: 1.2rem;
        text-align: center;
    }

    .footer-links h4::after,
    .footer-contact h4::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-links a {
        padding-left: 0;
        text-align: center;
        display: block;
    }

    .footer-links a::before {
        display: none;
    }

    .footer-links a:hover {
        transform: none;
    }

    .footer-contact li {
        padding-left: 0;
        justify-content: center;
    }

    .footer-contact li::before {
        position: relative;
        left: auto;
        top: auto;
        transform: none;
        margin-right: 10px;
    }

    .footer-bottom {
        padding: 30px 20px 20px;
    }
}

@media (min-width: 769px) and (max-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        padding: 0 30px;
    }

    .footer-brand {
        grid-column: 1 / -1;
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .navbar-container {
        flex-direction: column;
        padding: 10px;
    }

    .nav-menu ul {
        flex-direction: column;
        align-items: center;
    }

    .nav-menu li {
        margin: 10px 0;
    }

    .hero-content h1 {
        font-size: 36px;
    }

    .hero-buttons {
        flex-direction: column;
    }

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

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

    .features-gallery {
        grid-template-columns: 1fr;
    }

    .about-content {
        flex-direction: column;
        text-align: center;
    }

    .about-image {
        width: 100%;
    }

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

    .gallery-thumbs {
        grid-template-columns: 1fr;
    }

    .gallery-main img {
        height: 300px;
    }

    .gallery-thumbs img {
        height: 150px;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 28px;
    }

    .car-showcase h2,
    .brands h2,
    .contact h2,
    .about h2 {
        font-size: 24px;
    }

    .car-model h3 {
        font-size: 20px;
    }

    .contact-form {
        padding: 20px;
    }

    .about-content {
        gap: 20px;
    }

    .about-image img {
        height: 250px;
    }
}

/* About页面导航样式 - 科技蓝白主题 */
.nav-container {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-bottom: 2px solid #007bff;
    border-radius: 0 0 10px 10px;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.1);
    padding: 1rem 0;
    margin-bottom: 1rem;
}

.logo-box {
    background: #007bff;
    color: white;
    padding: 1rem 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 123, 255, 0.2);
    text-align: center;
    margin-bottom: 1rem;
}

.logo-box h1 {
    margin: 0;
    font-size: 1.8rem;
    font-weight: 700;
}

.nav-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 0;
    margin: 0;
}

.nav-item {
    list-style: none;
}

.nav-item a {
    display: block;
    padding: 0.8rem 1.5rem;
    background: white;
    color: #007bff;
    text-decoration: none;
    border: 2px solid #007bff;
    border-radius: 6px;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.nav-item a::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(0, 123, 255, 0.1), transparent);
    transition: left 0.5s ease;
}

.nav-item a:hover::before {
    left: 100%;
}

.nav-item a:hover {
    background: #007bff;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

.nav-item.active a {
    background: #007bff;
    color: white;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.3);
}

/* About页面页脚样式 - 科技蓝白主题 */
.footer-tech {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-top: 2px solid #007bff;
    border-radius: 10px 10px 0 0;
    box-shadow: 0 -4px 12px rgba(0, 123, 255, 0.1);
    padding: 2rem 0;
    margin-top: 2rem;
}

.footer-content-tech {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    padding: 0 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.brand-box,
.links-box,
.contact-box {
    background: white;
    padding: 1.5rem;
    border: 2px solid #007bff;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.brand-box:hover,
.links-box:hover,
.contact-box:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 16px rgba(0, 123, 255, 0.2);
}

.brand-box h2 {
    color: #007bff;
    margin: 0 0 0.5rem 0;
    font-size: 2rem;
    font-weight: 700;
}

.brand-box p {
    color: #6c757d;
    margin: 0;
    font-size: 1rem;
}

.links-box h4,
.contact-box h4 {
    color: #007bff;
    margin: 0 0 1rem 0;
    font-size: 1.2rem;
    font-weight: 600;
    border-bottom: 2px solid #007bff;
    padding-bottom: 0.5rem;
}

.links-box ul,
.contact-box ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.links-box li,
.contact-box li {
    margin-bottom: 0.5rem;
}

.links-box a {
    color: #495057;
    text-decoration: none;
    transition: color 0.3s ease;
    display: block;
    padding: 0.3rem 0;
    border-left: 3px solid transparent;
    padding-left: 1rem;
}

.links-box a:hover {
    color: #007bff;
    border-left: 3px solid #007bff;
}

.contact-box li {
    color: #495057;
    padding-left: 1rem;
    border-left: 3px solid #007bff;
}

.footer-bottom-tech {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid #dee2e6;
}

.bottom-box {
    background: #007bff;
    color: white;
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.bottom-box p {
    margin: 0;
    font-size: 0.9rem;
}

/* 网站备案信息 */
.beian-info {
    text-align: center;
    margin-top: 10px;
    font-size: 0.85rem;
    color: #999;
}

.beian-info a {
    color: #aaa;
    text-decoration: none;
    transition: color 0.3s ease;
}

.beian-info a:hover {
    color: #fff;
    text-decoration: underline;
}

.footer-bottom-tech .beian-info {
    margin-top: 8px;
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom-tech .beian-info a {
    color: rgba(255, 255, 255, 0.9);
}

.footer-bottom-tech .beian-info a:hover {
    color: #fff;
    text-decoration: underline;
}

.auth-footer .beian-info {
    margin-top: 8px;
    color: #666;
    font-size: 0.8rem;
}

.auth-footer .beian-info a {
    color: #666;
}

.auth-footer .beian-info a:hover {
    color: #007bff;
    text-decoration: underline;
}

/* About页面主体样式调整 */
.about-hero {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%) !important;
    color: white;
    padding: 4rem 0;
    text-align: center;
    border-radius: 0 0 20px 20px;
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.about-hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.about-hero p {
    font-size: 1.2rem;
    opacity: 0.9;
}

.strip-container {
    margin: 2rem 0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 16px rgba(0, 123, 255, 0.1);
    border: 1px solid rgba(0, 123, 255, 0.2);
}

.strip-container::before {
    background: linear-gradient(135deg, rgba(0, 123, 255, 0.05), rgba(0, 0, 0, 0.05)) !important;
}

.strip-container.alternate::before {
    background: linear-gradient(135deg, rgba(0, 0, 0, 0.05), rgba(0, 123, 255, 0.05)) !important;
}

.strip-text h3 {
    color: #007bff !important;
    font-size: 1.8rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid #007bff !important;
    padding-bottom: 0.5rem;
    display: inline-block;
}

.dev-profile h4 {
    color: #007bff;
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
}

.tech-skills .skill-category h5 {
    color: #007bff;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.vision-goals .goal-item {
    background: rgba(0, 123, 255, 0.05);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid #007bff;
    margin-bottom: 1rem;
    transition: transform 0.3s ease;
}

.vision-goals .goal-item:hover {
    transform: translateX(10px);
    background: rgba(0, 123, 255, 0.1);
}

.tech-architecture .arch-layer {
    background: rgba(0, 123, 255, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 1rem;
    border: 1px solid rgba(0, 123, 255, 0.2);
}

.tech-architecture .arch-layer h4 {
    color: #007bff !important;
    margin-bottom: 1rem;
    font-size: 1.2rem;
    border-bottom: 2px solid #007bff !important;
}

.tech-item {
    background: #007bff !important;
    color: white !important;
    padding: 0.3rem 0.8rem;
    border-radius: 12px;
    font-size: 0.8rem;
    font-weight: 500;
}

.culture-values .value-item {
    background: rgba(0, 123, 255, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
    border-top: 4px solid #007bff;
    margin-bottom: 1rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.culture-values .value-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.2);
}

.culture-values .value-item h5 {
    color: #007bff;
    margin-bottom: 0.5rem;
    font-size: 1.1rem;
}

/* 响应式设计 - About页面 */
@media (max-width: 768px) {
    .nav-links {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-item {
        margin-bottom: 0.5rem;
        width: 100%;
        max-width: 300px;
    }
    
    .nav-item a {
        text-align: center;
    }
    
    .footer-content-tech {
        grid-template-columns: 1fr;
        padding: 0 1rem;
    }
    
    .about-hero h2 {
        font-size: 2rem;
    }
    
    .about-hero p {
        font-size: 1rem;
    }
}

/* ==================== 汽车视频展示样式 ==================== */
.car-videos {
    padding: 60px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
}

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

.car-videos h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #333;
}

.car-videos .section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.videos-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.video-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.video-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.video-thumbnail {
    position: relative;
    padding-top: 56.25%; /* 16:9 比例 */
    background: #f0f0f0;
    overflow: hidden;
}

.video-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

.video-card:hover .video-thumbnail img {
    transform: scale(1.05);
}

.video-play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(230, 0, 18, 0.8);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 24px;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.video-play-button:hover {
    background: rgba(230, 0, 18, 1);
}

.video-info {
    padding: 20px;
}

.video-info h4 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    color: #333;
}

.video-info p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

.video-placeholder {
    grid-column: 1 / -1;
    background: white;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.placeholder-icon {
    margin-bottom: 20px;
    color: #ddd;
}

.placeholder-content p {
    color: #999;
    font-size: 1.1rem;
}

/* 响应式设计 - 视频展示 */
@media (max-width: 768px) {
    .car-videos {
        padding: 40px 0;
    }
    
    .car-videos h2 {
        font-size: 2rem;
    }
    
    .videos-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* ==================== 汽车技术参数样式 ==================== */
.car-specs {
    padding: 60px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
}

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

.car-specs h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #333;
}

.car-specs .section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.specs-table {
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    overflow: hidden;
    margin-top: 30px;
}

.specs-row {
    display: grid;
    grid-template-columns: 1fr 2fr;
    border-bottom: 1px solid #f0f0f0;
    padding: 20px;
    transition: background-color 0.3s ease;
}

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

.specs-row:hover {
    background-color: #f9f9f9;
}

.specs-label {
    font-weight: 600;
    color: #333;
    font-size: 1rem;
}

.specs-value {
    color: #666;
    font-size: 1rem;
}

.specs-placeholder {
    background: white;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.specs-placeholder .placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.specs-placeholder .placeholder-icon {
    margin-bottom: 20px;
    color: #ddd;
}

.specs-placeholder .placeholder-content p {
    color: #999;
    font-size: 1.1rem;
}

/* ==================== 汽车图片展示样式 ==================== */
.car-gallery {
    padding: 60px 0;
    background: linear-gradient(135deg, #f5f7fa 0%, #e4e8f0 100%);
}

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

.car-gallery h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #333;
}

.car-gallery .section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.gallery-item {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.gallery-image {
    position: relative;
    padding-top: 66.67%; /* 3:2 比例 */
    background: #f0f0f0;
    overflow: hidden;
}

.gallery-image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s ease;
}

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

.gallery-info {
    padding: 20px;
}

.gallery-info h4 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    color: #333;
}

.gallery-info p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

.gallery-placeholder {
    grid-column: 1 / -1;
    background: white;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.gallery-placeholder .placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.gallery-placeholder .placeholder-icon {
    margin-bottom: 20px;
    color: #ddd;
}

.gallery-placeholder .placeholder-content p {
    color: #999;
    font-size: 1.1rem;
}

/* ==================== 汽车配置特征样式 ==================== */
.car-features {
    padding: 60px 0;
    background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
}

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

.car-features h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 10px;
    color: #333;
}

.car-features .section-subtitle {
    text-align: center;
    color: #666;
    font-size: 1.1rem;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.features-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
    margin-top: 30px;
}

.feature-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 4px solid #e60012;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-icon {
    margin-bottom: 20px;
    color: #e60012;
    font-size: 2rem;
}

.feature-card h4 {
    margin: 0 0 15px 0;
    font-size: 1.2rem;
    color: #333;
}

.feature-card p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

.features-placeholder {
    grid-column: 1 / -1;
    background: white;
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.features-placeholder .placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.features-placeholder .placeholder-icon {
    margin-bottom: 20px;
    color: #ddd;
}

.features-placeholder .placeholder-content p {
    color: #999;
    font-size: 1.1rem;
}

/* 响应式设计 - 新板块 */
@media (max-width: 768px) {
    .car-specs,
    .car-gallery,
    .car-features {
        padding: 40px 0;
    }
    
    .car-specs h2,
    .car-gallery h2,
    .car-features h2 {
        font-size: 2rem;
    }
    
    .specs-row {
        grid-template-columns: 1fr;
        gap: 10px;
        padding: 15px;
    }
    
    .gallery-grid,
    .features-list {
        grid-template-columns: 1fr;
        gap: 20px;
    }
}

/* ==================== 导航栏滚动渐隐渐现效果 ==================== */
.navbar {
    transition: all 0.3s ease-in-out;
}

.navbar.hidden {
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
}

.navbar.visible {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
}

/* 增强固定导航栏的视觉效果 */
.navbar.scrolled {
    background-color: rgba(255, 255, 255, 0.98);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

/* ==================== 回到顶部按钮 ==================== */
.back-to-top {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #e60012;
    color: white;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    box-shadow: 0 4px 12px rgba(230, 0, 18, 0.3);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease-in-out;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background-color: #c00010;
    transform: translateY(-5px) scale(1.1);
    box-shadow: 0 6px 16px rgba(230, 0, 18, 0.4);
}

.back-to-top:active {
    transform: translateY(0) scale(0.95);
}

.back-to-top::before {
    content: '↑';
    font-weight: bold;
}

/* 响应式设计 - 回到顶部按钮 */
@media (max-width: 768px) {
    .back-to-top {
        width: 45px;
        height: 45px;
        bottom: 20px;
        right: 20px;
        font-size: 18px;
    }
}

/* ==================== 新增板块详细样式 ==================== */

/* 技术参数详细表格 */
.specs-details-table {
    width: 100%;
    border-collapse: collapse;
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    margin-top: 30px;
}

.specs-details-table thead {
    background: linear-gradient(135deg, #e60012, #c00010);
    color: white;
}

.specs-details-table th {
    padding: 20px;
    text-align: left;
    font-weight: 600;
    font-size: 1rem;
    border-bottom: 2px solid #d00010;
}

.specs-details-table tbody tr {
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.3s ease;
}

.specs-details-table tbody tr:last-child {
    border-bottom: none;
}

.specs-details-table tbody tr:hover {
    background-color: #f9f9f9;
}

.specs-details-table td {
    padding: 20px;
    color: #333;
    font-size: 0.95rem;
    vertical-align: top;
}

.specs-details-table td:nth-child(1) {
    font-weight: 600;
    color: #333;
}

.specs-details-table td:nth-child(2) {
    color: #e60012;
    font-weight: 600;
}

.specs-details-table td:nth-child(3),
.specs-details-table td:nth-child(4) {
    color: #666;
}

/* 图片展示卡片样式 */
.gallery-card {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.gallery-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.gallery-image {
    position: relative;
    overflow: hidden;
    background: #f0f0f0;
}

.gallery-image img {
    width: 100%;
    height: 250px;
    object-fit: cover;
    display: block;
    transition: transform 0.5s ease;
}

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

.gallery-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.2);
    opacity: 0;
    transition: opacity 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.gallery-zoom-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.9);
    border: none;
    color: #333;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
}

.gallery-zoom-btn:hover {
    background: white;
    transform: scale(1.1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.gallery-info {
    padding: 25px;
}

.gallery-info h4 {
    margin: 0 0 10px 0;
    font-size: 1.2rem;
    color: #333;
    line-height: 1.3;
}

.gallery-info p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
}

/* 配置特征卡片样式 */
.feature-card {
    background: white;
    border-radius: 12px;
    padding: 30px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    border-left: 4px solid #e60012;
    display: flex;
    flex-direction: column;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.feature-image {
    margin-bottom: 20px;
    border-radius: 8px;
    overflow: hidden;
    background: #f0f0f0;
}

.feature-image img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    display: block;
}

.feature-content {
    flex: 1;
}

.feature-icon {
    margin-bottom: 20px;
    color: #e60012;
    font-size: 2rem;
    text-align: center;
}

.feature-card h4 {
    margin: 0 0 15px 0;
    font-size: 1.2rem;
    color: #333;
    text-align: center;
}

.feature-card p {
    margin: 0;
    color: #666;
    font-size: 0.95rem;
    line-height: 1.5;
    text-align: center;
}

/* 图片模态框样式 */
.image-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.9);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 响应式设计 - 新增板块 */
@media (max-width: 768px) {
    .specs-details-table {
        display: block;
        overflow-x: auto;
    }
    
    .specs-details-table th,
    .specs-details-table td {
        padding: 15px;
        font-size: 0.9rem;
    }
    
    .gallery-image img {
        height: 200px;
    }
    
    .gallery-info {
        padding: 20px;
    }
    
    .gallery-info h4 {
        font-size: 1.1rem;
    }
    
    .feature-card {
        padding: 20px;
    }
    
    .feature-icon {
        font-size: 1.8rem;
    }
    
    .feature-card h4 {
        font-size: 1.1rem;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .car-specs,
    .car-gallery,
    .car-features {
        padding: 40px 0;
    }
    
    .car-specs h2,
    .car-gallery h2,
    .car-features h2 {
        font-size: 1.8rem;
    }
    
    .car-specs .section-subtitle,
    .car-gallery .section-subtitle,
    .car-features .section-subtitle {
        font-size: 1rem;
        margin-bottom: 30px;
    }
    
    .specs-details-table th,
    .specs-details-table td {
        padding: 12px;
        font-size: 0.85rem;
    }
    
    .gallery-image img {
        height: 180px;
    }
    
    .feature-image img {
        height: 160px;
    }
    
    .gallery-info,
    .feature-card {
        padding: 15px;
    }
    
    .gallery-info h4,
    .feature-card h4 {
        font-size: 1rem;
    }
    
    .gallery-info p,
    .feature-card p {
        font-size: 0.9rem;
    }
    
    .gallery-grid,
    .features-list {
        gap: 20px;
    }
}

/* 图片加载优化 */
.gallery-image img,
.feature-image img {
    background-color: #f5f5f5;
    min-height: 150px; /* 确保即使图片加载失败也有占位高度 */
}

/* 文字间距优化 */
.gallery-info p,
.feature-card p,
.specs-details-table td {
    word-wrap: break-word;
    overflow-wrap: break-word;
    hyphens: auto;
}

/* 确保长文本不会破坏布局 */
.gallery-info h4,
.feature-card h4 {
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* 图片比例保持和加载优化 */
.gallery-image,
.feature-image {
    position: relative;
    overflow: hidden;
    background-color: #f5f5f5;
}

.gallery-image img,
.feature-image img {
    transition: transform 0.5s ease;
}

/* 图片比例增强 */
@supports (aspect-ratio: 3/2) {
    .gallery-image {
        aspect-ratio: 3/2;
        height: auto;
    }
    
    .feature-image {
        aspect-ratio: 4/3;
        height: auto;
    }
}

/* ==================== 全面响应式设计系统 ==================== */

/* 超大桌面屏幕 (≥1600px) */
@media screen and (min-width: 1600px) {
    .container {
        max-width: 1400px;
    }
    
    .hero-content h1 {
        font-size: 4.5rem;
    }
    
    .hero-content p {
        font-size: 1.5rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .features-list {
        grid-template-columns: repeat(4, 1fr);
    }
}

/* 大桌面屏幕 (1200px-1599px) */
@media screen and (min-width: 1200px) and (max-width: 1599px) {
    .container {
        max-width: 1200px;
    }
    
    .hero-content h1 {
        font-size: 4rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .features-list {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 桌面屏幕 (1025px-1199px) - 已有部分规则，此处补充 */
@media screen and (min-width: 1025px) and (max-width: 1199px) {
    .container {
        max-width: 1100px;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
    
    .features-list {
        grid-template-columns: repeat(3, 1fr);
        gap: 25px;
    }
}

/* 平板横屏 (769px-1024px) - 已有规则，此处优化 */
@media screen and (min-width: 769px) and (max-width: 1024px) {
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .features-list {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .history-content {
        flex-direction: column;
    }
    
    .history-images {
        margin-top: 30px;
        max-width: 100%;
    }
}

/* 平板竖屏 (481px-768px) - 优化调整 */
@media screen and (min-width: 481px) and (max-width: 768px) {
    .navbar-container {
        padding: 15px;
    }
    
    .nav-menu ul {
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .nav-menu li {
        margin: 5px 10px;
    }
    
    .hero-content h1 {
        font-size: 2.8rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .features-list {
        grid-template-columns: repeat(2, 1fr);
        gap: 20px;
    }
    
    .specs-details-table {
        font-size: 0.9rem;
    }
}

/* 大手机屏幕 (321px-480px) - 细化优化 */
@media screen and (min-width: 321px) and (max-width: 480px) {
    .navbar-container {
        padding: 10px;
    }
    
    .nav-menu ul {
        flex-direction: column;
        align-items: center;
    }
    
    .nav-menu li {
        margin: 8px 0;
        width: 100%;
        text-align: center;
    }
    
    .hero-content h1 {
        font-size: 2.2rem;
    }
    
    .hero-content p {
        font-size: 1.1rem;
    }
    
    .gallery-grid,
    .features-list {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .car-specs h2,
    .car-gallery h2,
    .car-features h2 {
        font-size: 1.9rem;
    }
    
    .specs-details-table th,
    .specs-details-table td {
        padding: 10px;
        font-size: 0.85rem;
    }
}

/* 小手机屏幕 (≤320px) - 极致优化 */
@media screen and (max-width: 320px) {
    .navbar-container {
        padding: 8px;
    }
    
    .hero-content h1 {
        font-size: 1.8rem;
    }
    
    .hero-content p {
        font-size: 1rem;
        line-height: 1.4;
    }
    
    .hero-buttons {
        flex-direction: column;
        gap: 10px;
    }
    
    .hero-buttons .btn {
        width: 100%;
        padding: 12px;
    }
    
    .car-specs h2,
    .car-gallery h2,
    .car-features h2 {
        font-size: 1.7rem;
    }
    
    .section-subtitle {
        font-size: 0.9rem;
        line-height: 1.4;
    }
    
    .gallery-info,
    .feature-card {
        padding: 12px;
    }
    
    .gallery-info h4,
    .feature-card h4 {
        font-size: 0.95rem;
    }
    
    .gallery-info p,
    .feature-card p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .back-to-top {
        bottom: 20px;
        right: 20px;
        width: 40px;
        height: 40px;
        font-size: 18px;
    }
}

/* 响应式字体缩放基础 */
html {
    font-size: 16px;
}

@media screen and (max-width: 768px) {
    html {
        font-size: 15px;
    }
}

@media screen and (max-width: 480px) {
    html {
        font-size: 14px;
    }
}

/* 响应式图片优化 */
img {
    max-width: 100%;
    height: auto;
}

/* 响应式表格优化 */
table {
    width: 100%;
    table-layout: fixed;
}

/* 响应式表单元素 */
input, select, textarea, button {
    font-size: 1rem;
    max-width: 100%;
}

@media screen and (max-width: 768px) {
    input, select, textarea, button {
        font-size: 0.95rem;
    }
}

/* 响应式间距系统 */
.section-padding {
    padding: 80px 0;
}

@media screen and (max-width: 768px) {
    .section-padding {
        padding: 60px 0;
    }
}

@media screen and (max-width: 480px) {
    .section-padding {
        padding: 40px 0;
    }
}

/* 响应式网格系统 */
.responsive-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 30px;
}

@media screen and (max-width: 768px) {
    .responsive-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: 20px;
    }
}

@media screen and (max-width: 480px) {
    .responsive-grid {
        grid-template-columns: 1fr;
        gap: 15px;
    }
}

/* 响应式工具类 */
.hide-on-mobile {
    display: block;
}

.show-on-mobile {
    display: none;
}

@media screen and (max-width: 768px) {
    .hide-on-mobile {
        display: none;
    }
    
    .show-on-mobile {
        display: block;
    }
}

/* 打印样式优化 */
@media print {
    .navbar,
    .footer,
    .back-to-top,
    .hero-buttons {
        display: none;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    a {
        color: black;
        text-decoration: underline;
    }
    
    .page-break {
        page-break-before: always;
    }
}

/* ==================== 导航菜单用户头像样式优化 ==================== */
/* 导航菜单中的用户头像容器 */
#admin-nav-item .user-avatar-container {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 导航菜单中的用户头像 */
#admin-nav-item .user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, #007bff, #0056b3);
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(0, 123, 255, 0.3);
    margin: 0;
    padding: 0;
}

#admin-nav-item .user-avatar:hover {
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

/* 导航菜单中的用户下拉菜单 */
#admin-nav-item .user-dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 50%;
    transform: translateX(50%);
    background: white;
    border-radius: 8px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
    padding: 1rem;
    min-width: 200px;
    z-index: 1000;
    display: none;
}

#admin-nav-item .user-dropdown.show {
    display: block;
}

/* 响应式调整 */
@media (max-width: 768px) {
    #admin-nav-item .user-avatar {
        width: 32px;
        height: 32px;
        font-size: 0.9rem;
    }
    
    #admin-nav-item .user-dropdown {
        right: 0;
        transform: none;
        min-width: 180px;
    }
    
    /* 在小屏幕上，导航菜单变为垂直布局，调整头像位置 */
    .nav-menu ul {
        flex-direction: column;
    }
    
    #admin-nav-item {
        margin: 8px 0 !important;
        text-align: center;
    }
}

/* 确保导航菜单中的用户头像与文本链接对齐 */
.nav-menu li#admin-nav-item {
    display: flex;
    align-items: center;
    height: 100%;
}

/* ==================== 关于我们和联系我们导航项样式 ==================== */
/* 导航菜单中的"关于我们"和"联系我们"项 */
.nav-menu li:nth-last-child(3),  /* 关于我们 - 主要页面 */
.nav-menu li:nth-last-child(2),  /* 联系我们 - 主要页面 */
.nav-links .nav-item:nth-last-child(3),  /* 关于我们 - about/contact页面 */
.nav-links .nav-item:nth-last-child(2) {  /* 联系我们 - about/contact页面 */
    background-color: #2d3748;  /* 深灰色背景 */
    border: 2px solid #d53f8c;  /* 紫红色边框 */
    border-radius: 8px;         /* 圆角 */
    padding: 0.3rem 0.8rem !important;  /* 内边距 */
    margin-left: 15px !important;      /* 调整左边距 */
    margin-right: 5px;          /* 右边距 */
    transition: all 0.3s ease;  /* 平滑过渡效果 */
}

/* 悬停效果 */
.nav-menu li:nth-last-child(3):hover,
.nav-menu li:nth-last-child(2):hover,
.nav-links .nav-item:nth-last-child(3):hover,
.nav-links .nav-item:nth-last-child(2):hover {
    background-color: #4a5568;  /* 悬停时背景色加深 */
    border-color: #b83280;      /* 悬停时边框色加深为深紫红色 */
    transform: translateY(-2px); /* 轻微上浮效果 */
    box-shadow: 0 4px 12px rgba(213, 63, 140, 0.3); /* 紫红色阴影 */
}

/* 链接颜色调整 */
.nav-menu li:nth-last-child(3) a,
.nav-menu li:nth-last-child(2) a,
.nav-links .nav-item:nth-last-child(3) a,
.nav-links .nav-item:nth-last-child(2) a {
    color: #ffffff !important;  /* 白色文字，提高对比度 */
    font-weight: 600;           /* 加粗字体 */
}

/* 链接悬停颜色 */
.nav-menu li:nth-last-child(3) a:hover,
.nav-menu li:nth-last-child(2) a:hover,
.nav-links .nav-item:nth-last-child(3) a:hover,
.nav-links .nav-item:nth-last-child(2) a:hover {
    color: #f7fafc !important;  /* 悬停时更亮的白色 */
}

/* Active状态样式 - 当页面处于"关于我们"或"联系我们"时 */
.nav-menu li:nth-last-child(3).active,
.nav-menu li:nth-last-child(2).active,
.nav-links .nav-item:nth-last-child(3).active,
.nav-links .nav-item:nth-last-child(2).active {
    background-color: #d53f8c !important;  /* 紫红色背景 */
    border-color: #b83280 !important;      /* 更深紫红色边框 */
}

/* Active状态链接颜色 */
.nav-menu li:nth-last-child(3).active a,
.nav-menu li:nth-last-child(2).active a,
.nav-links .nav-item:nth-last-child(3).active a,
.nav-links .nav-item:nth-last-child(2).active a {
    color: white !important;  /* 白色文字 */
    font-weight: 700;         /* 更粗的字体 */
}

/* 响应式调整 */
@media (max-width: 768px) {
    .nav-menu li:nth-last-child(3),
    .nav-menu li:nth-last-child(2),
    .nav-links .nav-item:nth-last-child(3),
    .nav-links .nav-item:nth-last-child(2) {
        margin-left: 8px !important;
        margin-right: 3px;
        padding: 0.2rem 0.6rem !important;
        border-width: 1.5px;
    }
    
    /* 移动端导航变为垂直布局时的调整 */
    .nav-menu ul,
    .nav-links {
        flex-direction: column;
    }
    
    .nav-menu li:nth-last-child(3),
    .nav-menu li:nth-last-child(2),
    .nav-links .nav-item:nth-last-child(3),
    .nav-links .nav-item:nth-last-child(2) {
        margin: 5px 0 !important;  /* 垂直布局时调整边距 */
        width: 100%;
        text-align: center;
    }
}

/* ==================== 汽车图片轮播样式 ==================== */
/* 轮播容器 */
.car-carousel {
    position: relative;
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    overflow: hidden;
    border-radius: 16px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
    background: linear-gradient(145deg, #1a1a1a 0%, #2d2d2d 100%);
}

/* 轮播轨道 */
.carousel-track {
    display: flex;
    transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1);
    height: 600px;
}

/* 轮播幻灯片 */
.carousel-slide {
    min-width: 100%;
    position: relative;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* 轮播图片 */
.carousel-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
}

/* 图片叠加层 */
.carousel-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.9), transparent);
    padding: 40px;
    color: white;
    transform: translateY(0);
    transition: transform 0.5s ease;
}

.carousel-slide:hover .carousel-overlay {
    transform: translateY(-10px);
}

/* 图片标题和描述 */
.carousel-title {
    font-size: 2.2rem;
    font-weight: 700;
    margin-bottom: 10px;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.carousel-description {
    font-size: 1.2rem;
    opacity: 0.9;
    line-height: 1.6;
    max-width: 800px;
}

/* 导航按钮 */
.carousel-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    z-index: 10;
}

.carousel-nav:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: translateY(-50%) scale(1.1);
    box-shadow: 0 0 20px rgba(255, 255, 255, 0.3);
}

.carousel-nav.prev {
    left: 30px;
}

.carousel-nav.next {
    right: 30px;
}

.carousel-nav svg {
    width: 24px;
    height: 24px;
    fill: white;
}

/* 轮播指示器 */
.carousel-indicators {
    position: absolute;
    bottom: 30px;
    left: 0;
    right: 0;
    display: flex;
    justify-content: center;
    gap: 12px;
    z-index: 10;
}

.carousel-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-indicator.active {
    background: #fff;
    transform: scale(1.2);
    box-shadow: 0 0 10px rgba(255, 255, 255, 0.5);
}

.carousel-indicator:hover {
    background: rgba(255, 255, 255, 0.6);
}

/* 自动播放控制 */
.carousel-controls {
    position: absolute;
    top: 30px;
    right: 30px;
    display: flex;
    gap: 15px;
    z-index: 10;
}

.carousel-control-btn {
    width: 45px;
    height: 45px;
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.carousel-control-btn:hover {
    background: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}

.carousel-control-btn svg {
    width: 20px;
    height: 20px;
    fill: white;
}

/* 轮播计数器 */
.carousel-counter {
    position: absolute;
    top: 30px;
    left: 30px;
    background: rgba(0, 0, 0, 0.6);
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
    z-index: 10;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .car-carousel {
        border-radius: 12px;
    }
    
    .carousel-track {
        height: 400px;
    }
    
    .carousel-overlay {
        padding: 25px;
    }
    
    .carousel-title {
        font-size: 1.6rem;
    }
    
    .carousel-description {
        font-size: 1rem;
    }
    
    .carousel-nav {
        width: 50px;
        height: 50px;
    }
    
    .carousel-nav.prev {
        left: 15px;
    }
    
    .carousel-nav.next {
        right: 15px;
    }
    
    .carousel-controls {
        top: 20px;
        right: 20px;
    }
    
    .carousel-counter {
        top: 20px;
        left: 20px;
    }
}

@media (max-width: 480px) {
    .carousel-track {
        height: 300px;
    }
    
    .carousel-overlay {
        padding: 20px;
    }
    
    .carousel-title {
        font-size: 1.3rem;
    }
    
    .carousel-description {
        font-size: 0.9rem;
    }
    
    .carousel-indicators {
        bottom: 20px;
    }
}