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

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

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

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

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
}

.logo h1 {
    color: #2c3e50;
    font-size: 24px;
}

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

nav ul li {
    margin-left: 30px;
}

nav ul li a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
    padding: 10px 0;
}

nav ul li a:hover,
nav ul li a.active {
    color: #3498db;
}

/* 主要内容样式 */
main {
    margin-top: 80px;
}

/* 英雄区域 */
.hero {
    background: linear-gradient(rgba(0,0,0,0.5), rgba(0,0,0,0.5)), url('../images/hero-bg.jpg');
    background-size: cover;
    background-position: center;
    height: 500px;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    color: white;
}

.hero-content h2 {
    font-size: 48px;
    margin-bottom: 20px;
}

.hero-content p {
    font-size: 20px;
    margin-bottom: 30px;
}

/* 按钮样式 */
.btn-primary {
    display: inline-block;
    background-color: #3498db;
    color: white;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    font-size: 16px;
}

.btn-primary:hover {
    background-color: #2980b9;
}

/* 页面头部 */
.page-header {
    background-color: #f8f9fa;
    padding: 60px 0;
    text-align: center;
}

.page-header h1 {
    font-size: 36px;
    color: #2c3e50;
}

/* 关于我们预览 */
.about-preview {
    padding: 80px 0;
}

.about-preview h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: #2c3e50;
}

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

.about-text {
    flex: 1;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 18px;
    line-height: 1.8;
}

.about-image img {
    flex: 1;
    max-width: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

/* 服务预览 */
.services-preview {
    background-color: #f8f9fa;
    padding: 80px 0;
}

.services-preview h2 {
    text-align: center;
    font-size: 32px;
    margin-bottom: 50px;
    color: #2c3e50;
}

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

.service-item {
    background-color: white;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s;
}

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

.service-item h3 {
    font-size: 22px;
    margin-bottom: 15px;
    color: #3498db;
}

/* 关于我们详情 */
.about-details {
    padding: 60px 0;
}

.about-main h2 {
    font-size: 28px;
    margin: 40px 0 20px;
    color: #2c3e50;
}

.about-main p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
}

/* 时间线 */
.timeline {
    position: relative;
    padding-left: 30px;
    margin: 30px 0;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background-color: #3498db;
}

.timeline-item {
    position: relative;
    margin-bottom: 30px;
}

.timeline-year {
    position: absolute;
    left: -30px;
    top: 0;
    background-color: #3498db;
    color: white;
    padding: 5px 10px;
    border-radius: 5px;
    font-weight: bold;
}

.timeline-content h3 {
    margin-bottom: 10px;
    color: #2c3e50;
    margin-left: 40px;
}

/* 服务详情 */
.services-details {
    padding: 60px 0;
}

.service-category {
    margin-bottom: 60px;
}

.service-category h2 {
    font-size: 28px;
    margin-bottom: 30px;
    color: #2c3e50;
}

.service-description {
    display: flex;
    gap: 30px;
    align-items: center;
}

.service-description img {
    flex: 1;
    max-width: 400px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.service-text {
    flex: 2;
}

.service-text p {
    font-size: 18px;
    line-height: 1.8;
    margin-bottom: 20px;
}

.service-text ul {
    list-style: none;
    padding-left: 0;
}

.service-text ul li {
    padding: 10px 0;
    padding-left: 30px;
    position: relative;
    border-bottom: 1px solid #eee;
}

.service-text ul li:before {
    content: '✓';
    position: absolute;
    left: 0;
    color: #3498db;
    font-weight: bold;
}

/* 注册表单 */
.registration-form {
    padding: 60px 0;
    background-color: #f8f9fa;
}

.form-container {
    max-width: 600px;
    margin: 0 auto;
    background-color: white;
    padding: 40px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
}

.form-container h2 {
    text-align: center;
    margin-bottom: 30px;
    color: #2c3e50;
}

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

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

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="password"] {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border-color 0.3s;
}

.form-group input:focus {
    border-color: #3498db;
    outline: none;
}

.checkbox-group {
    display: flex;
    align-items: flex-start;
}

.checkbox-group input[type="checkbox"] {
    width: auto;
    margin-right: 10px;
    margin-top: 5px;
}

.checkbox-group label {
    font-weight: normal;
}

.checkbox-group label a {
    color: #3498db;
    text-decoration: none;
}

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

.login-link {
    text-align: center;
    margin-top: 20px;
}

.login-link a {
    color: #3498db;
    text-decoration: none;
}

.login-link a:hover {
    text-decoration: underline;
}

/* 页脚 */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px 0;
    margin-top: 60px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    header .container {
        flex-direction: column;
        padding: 10px;
    }
    
    nav ul {
        margin-top: 10px;
    }
    
    nav ul li {
        margin: 0 10px;
    }
    
    .hero-content h2 {
        font-size: 32px;
    }
    
    .hero-content p {
        font-size: 16px;
    }
    
    .about-content {
        flex-direction: column;
    }
    
    .service-description {
        flex-direction: column;
    }
    
    .service-description img {
        max-width: 100%;
    }
    
    .form-container {
        padding: 20px;
    }
}