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

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

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

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

ul {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
}

.btn {
    display: inline-block;
    padding: 8px 20px;
    border-radius: 4px;
    background-color: #000;
    color: #fff;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
}

.btn:hover {
    opacity: 0.9;
}

.btn-primary {
    background-color: #67c23a;
}

.section-title {
    font-size: 28px;
    font-weight: 600;
    margin-bottom: 30px;
    text-align: center;
}

/* 头部导航 */
header {
    background-color: #000;
    padding: 20px 0;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

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

.logo img {
    height: 30px;
    margin-right: 10px;
}

nav ul {
    display: flex;
}

nav ul li {
    margin: 0 15px;
}

nav ul li a {
    font-weight: 500;
    transition: color 0.3s ease;
    color: #fff;
}

nav ul li a:hover {
    color: #67c23a;
}

.login-btn .btn {
    font-size: 14px;
    background-color: #fff;
    color: #000;
}

.login-btn .btn:hover {
    background-color: #67c23a;
    color: #fff;
}

/* 英雄区域 */
.hero {
    background-color: #000;
    color: #fff;
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.hero .container {
    display: flex;
    align-items: center;
}

.hero-content {
    flex: 1;
    padding-right: 50px;
}

.breadcrumb {
    display: flex;
    font-size: 14px;
    margin-bottom: 20px;
    color: #aaa;
}

.breadcrumb span {
    margin: 0 5px;
}

.hero h1 {
    font-size: 36px;
    font-weight: 600;
    margin-bottom: 20px;
    line-height: 1.3;
}

.hero p {
    font-size: 16px;
    color: #ccc;
    margin-bottom: 30px;
}

.hero-image {
    flex: 1;
    text-align: right;
}

.hero-image img {
    max-width: 100%;
}

/* 搜索区域 */
.search-section {
    margin-top: -30px;
    margin-bottom: 60px;
    position: relative;
}

.search-tabs {
    display: flex;
    background-color: #f5f5f5;
    border-radius: 8px 8px 0 0;
    overflow: hidden;
}

.tab {
    padding: 15px 30px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.tab.active {
    background-color: #fff;
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.05);
}

.search-box {
    display: flex;
    align-items: center;
    padding: 20px;
    background-color: #fff;
    border-radius: 0 0 8px 8px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
}

.search-item {
    flex: 1;
    position: relative;
    margin-right: 15px;
}

.search-item i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #999;
}

.search-item input {
    width: 100%;
    padding: 12px 15px 12px 40px;
    border: 1px solid #eee;
    border-radius: 4px;
    font-size: 14px;
}

.search-btn {
    background-color: #67c23a;
    color: #fff;
    border: none;
    padding: 12px 30px;
    border-radius: 4px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.3s ease;
}

.search-btn:hover {
    background-color: #2040DD;
}

/* 特点区域 */
.features {
    padding: 60px 0;
    background-color: #fff;
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 30px;
    margin-top: 40px;
}

.feature-item {
    text-align: center;
    padding: 30px 20px;
    border-radius: 8px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.feature-icon {
    width: 60px;
    height: 60px;
    margin: 0 auto 20px;
    background-color: #f5f7ff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.feature-icon i {
    font-size: 24px;
    color: #67c23a;
}

.feature-item h3 {
    font-size: 18px;
    margin-bottom: 15px;
}

.feature-item p {
    font-size: 14px;
    color: #666;
}

/* 汽车展示区域 */
.cars {
    padding: 60px 0;
    background-color: #f9f9f9;
}

.car-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

.car-card {
    background-color: #fff;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease;
}

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

.car-card img {
    width: 100%;
    height: 160px;
    object-fit: cover;
}

.car-info {
    padding: 20px;
}

.car-info h3 {
    font-size: 18px;
    margin-bottom: 10px;
}

.car-specs {
    font-size: 12px;
    color: #666;
    margin-bottom: 10px;
}

.car-features {
    font-size: 14px;
    color: #333;
    margin-bottom: 10px;
}

.car-review {
    font-size: 14px;
    color: #FFB400;
    margin-bottom: 15px;
}

.car-review span {
    color: #999;
    font-size: 12px;
}

.car-btn {
    width: 100%;
    text-align: center;
    padding: 10px;
    font-size: 14px;
}

/* 汽车滑块区域 */
.car-slider {
    padding: 40px 0;
}

.slider-wrapper {
    display: flex;
    align-items: center;
    margin-bottom: 30px;
}

.slider-track {
    display: flex;
    flex: 1;
    overflow-x: hidden;
}

.slide {
    min-width: 25%;
    padding: 0 10px;
    transition: all 0.3s ease;
}

.slide:hover {
    opacity: 1;
}

.slide-content {
    background-color: #f9f9f9;
    border-radius: 8px;
    padding: 20px;
    text-align: center;
    border: 2px solid transparent;
    transition: all 0.3s ease;
}

.slide:hover .slide-content {
    border-color: #67c23a;
}

.slide-content h4 {
    font-size: 16px;
    margin-bottom: 5px;
}

.tag {
    display: inline-block;
    background-color: #eee;
    color: #666;
    font-size: 12px;
    padding: 2px 8px;
    border-radius: 4px;
    margin-bottom: 10px;
}

.slide-content img {
    height: 100px;
    object-fit: contain;
}

.slide-controls {
    margin: 0 10px;
}

.slide-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background-color: #fff;
    border: 1px solid #eee;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.slide-btn:hover {
    background-color: #f5f5f5;
}

/* 订阅区域 */
.newsletter {
    padding: 60px 0;
    background-color: #eeff7a;
    position: relative;
    overflow: hidden;
}

.newsletter .container {
    display: flex;
    align-items: center;
}

.newsletter-content {
    flex: 1;
}

.newsletter h2 {
    font-size: 28px;
    margin-bottom: 20px;
}

.newsletter-form {
    display: flex;
    max-width: 500px;
}

.newsletter-form input {
    flex: 1;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 4px 0 0 4px;
    font-size: 14px;
}

.newsletter-form .btn {
    border-radius: 0 4px 4px 0;
    padding: 12px 25px;
}

.newsletter-image {
    flex: 1;
    text-align: right;
}

.newsletter-image img {
    max-width: 100%;
}

/* 页脚 */
footer {
    background-color: #111;
    color: #fff;
    padding: 60px 0 20px;
}

.footer-content {
    display: flex;
    flex-wrap: wrap;
    margin-bottom: 40px;
}

.footer-logo {
    flex: 2;
    padding-right: 50px;
}

.footer-logo img {
    height: 30px;
    margin-bottom: 20px;
}

.footer-logo p {
    font-size: 14px;
    color: #999;
    line-height: 1.7;
}

.footer-links {
    flex: 3;
    display: flex;
}

.footer-column {
    flex: 1;
    padding: 0 15px;
}

.footer-column h4 {
    font-size: 16px;
    margin-bottom: 20px;
}

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

.footer-column ul li a {
    font-size: 14px;
    color: #999;
    transition: color 0.3s ease;
}

.footer-column ul li a:hover {
    color: #fff;
}

.social-icons {
    display: flex;
    flex-wrap: wrap;
}

.social-icons a {
    width: 36px;
    height: 36px;
    background-color: #222;
    margin-right: 10px;
    margin-bottom: 10px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color 0.3s ease;
}

.social-icons a:hover {
    background-color: #67c23a;
}

.footer-bottom {
    padding-top: 20px;
    border-top: 1px solid #2a2a2a;
    text-align: center;
}

.footer-bottom p {
    font-size: 14px;
    color: #666;
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .feature-grid, .car-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .slide {
        min-width: 33.33%;
    }
}

@media (max-width: 768px) {
    .hero .container, .newsletter .container {
        flex-direction: column;
    }

    .hero-content, .newsletter-content {
        padding-right: 0;
        margin-bottom: 30px;
    }

    .search-box {
        flex-direction: column;
    }

    .search-item {
        width: 100%;
        margin-right: 0;
        margin-bottom: 15px;
    }

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

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

    .slide {
        min-width: 100%;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-logo {
        margin-bottom: 30px;
        padding-right: 0;
    }

    .footer-links {
        flex-direction: column;
    }

    .footer-column {
        margin-bottom: 30px;
    }
}

@media (max-width: 480px) {
    header .container {
        flex-direction: column;
    }

    .logo {
        margin-bottom: 15px;
    }

    nav ul {
        margin-bottom: 15px;
    }
}