/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
a{
	text-decoration: none;
}
body {
    font-family: 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #fff;
}

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

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
}

.logo {
    height: 40px;
    width: auto;
}

.logo-text {
    font-size: 18px;
    font-weight: 600;
    color: #2c5aa0;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover,
.nav-link.active {
    color: #2c5aa0;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: #2c5aa0;
}

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

.bar {
    width: 25px;
    height: 3px;
    background: #333;
    margin: 3px 0;
    transition: 0.3s;
}

/* 主横幅 */
.hero {
    margin-top: 70px;
    padding: 80px 0;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    display: flex;
    align-items: center;
    min-height: 600px;
}

.hero-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
}

.hero-content h1 {
    font-size: 3rem;
    margin-bottom: 20px;
    font-weight: 700;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 30px;
    opacity: 0.9;
}

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

.btn {
    padding: 12px 30px;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #fff;
    color: #2c5aa0;
}

.btn-primary:hover {
    background: #f8f9fa;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background: #fff;
    color: #2c5aa0;
}

.btn-outline {
    background: transparent;
    color: #2c5aa0;
    border: 2px solid #2c5aa0;
}

.btn-outline:hover {
    background: #2c5aa0;
    color: #fff;
}

.hero-image img {
    width: 100%;
    height: auto;
    border-radius: 10px;
}

/* 章节标题 */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 50px;
    color: #2c5aa0;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 3px;
    background: #2c5aa0;
}

/* 新闻动态 */
.news-section {
    padding: 80px 0;
    background: #f8f9fa;
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.news-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

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

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

.news-card-content {
    padding: 25px;
}

.news-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

.news-card p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.news-date {
    color: #999;
    font-size: 0.9rem;
}

/* 统计数据 */
.stats-section {
    padding: 80px 0;
    background: #2c5aa0;
    color: white;
}

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

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 10px;
}

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

/* 活动预览 */
.activities-preview {
    padding: 80px 0;
}

.activities-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
    margin-bottom: 50px;
}

.activity-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: transform 0.3s ease;
    cursor: pointer;
}

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

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

.activity-card-content {
    padding: 25px;
}

.activity-card h3 {
    font-size: 1.3rem;
    margin-bottom: 10px;
    color: #333;
}

.activity-card p {
    color: #666;
    margin-bottom: 15px;
    line-height: 1.6;
}

.activity-date {
    color: #2c5aa0;
    font-weight: 600;
    font-size: 0.9rem;
}

/* 页脚 */
.footer {
    background: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 40px;
    margin-bottom: 30px;
}

.footer-section h3 {
    margin-bottom: 20px;
    color: #2c5aa0;
}

.footer-section p,
.footer-section li {
    margin-bottom: 10px;
    color: #ccc;
}

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

.footer-section a {
    color: #ccc;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-section a:hover {
    color: #2c5aa0;
}

.social-links {
    display: flex;
    gap: 15px;
	position:relative;
}

.social-links a {
    display: inline-block;
    width: 40px;
    height: 40px;
    background: #2c5aa0;
    border-radius: 50%;
    text-align: center;
    line-height: 40px;
    transition: background 0.3s ease;
}

.social-links a:hover {
    background: #1e3d72;
}

.footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid #555;
    color: #999;
}

/* 工具类 */
.text-center {
    text-align: center;
}

.mb-20 {
    margin-bottom: 20px;
}

.mb-30 {
    margin-bottom: 30px;
}

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

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