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

body {
    font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
    line-height: 1.6;
    color: #333;
}

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

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

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 80px;
}

.logo img {
    height: 40px;
}

.main-nav ul {
    display: flex;
    list-style: none;
    gap: 40px;
}

.main-nav a {
    text-decoration: none;
    color: #333;
    font-size: 16px;
    font-weight: 500;
    transition: color 0.3s;
}

.main-nav a:hover,
.main-nav a.active {
    color: #1890ff;
}

.nav-login-btn {
    display: inline-block;
    padding: 8px 24px;
    background: #1890ff;
    color: #fff;
    border-radius: 4px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s;
}

.nav-login-btn:hover {
    background: #40a9ff;
    transform: translateY(-2px);
}

/* 页面标题区 */
.page-header {
    padding: 120px 0 60px;
    background-size: cover;
    background-position: center;
    position: relative;
    text-align: center;
    color: #fff;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.page-header .container {
    position: relative;
    z-index: 1;
}

.page-header h1 {
    font-size: 36px;
    margin-bottom: 10px;
}

.page-header p {
    font-size: 18px;
    opacity: 0.9;
}

/* 页脚 */
.footer {
    background: #001529;
    color: #fff;
    padding: 60px 0;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}

.footer-logo img {
    height: 40px;
    margin-bottom: 20px;
}

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

.footer-nav a {
    color: #fff;
    text-decoration: none;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-nav a:hover {
    opacity: 1;
}

.footer-info {
    text-align: right;
}

.footer-info p {
    margin-bottom: 10px;
    opacity: 0.8;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        height: auto;
        padding: 20px 0;
    }

    .main-nav {
        margin: 20px 0;
    }

    .main-nav ul {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .nav-login-btn {
        margin: 10px 0;
    }

    .footer-container {
        flex-direction: column;
        text-align: center;
    }

    .footer-nav {
        margin: 20px 0;
        justify-content: center;
    }

    .footer-info {
        text-align: center;
    }
}

/* 通用按钮样式 */
.btn-primary {
    display: inline-block;
    padding: 12px 30px;
    background: #1890ff;
    color: #fff;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    background: #40a9ff;
    transform: translateY(-2px);
}

/* 通用标题样式 */
.section-title {
    text-align: center;
    margin-bottom: 40px;
}

.section-title h2 {
    font-size: 32px;
    color: #333;
    margin-bottom: 10px;
}

.section-title p {
    font-size: 18px;
    color: #666;
}

/* 通用卡片样式 */
.card {
    background: #fff;
    border-radius: 10px;
    padding: 30px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}