/* 重置默认样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: "Microsoft YaHei", "SimSun", sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

ul {
    list-style: none;
}

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

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

/* 通用布局 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 15px;
}

/* 头部样式 */
header {
    background-color: #fff;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 50px;
    max-width: 1200px;
    margin: 0 auto;
}

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

.logo img {
    height: 50px;
    margin-right: 15px;
}

.logo h1 {
    font-size: 24px;
    color: #c41230;
    font-weight: bold;
}

/* 导航栏样式 */
nav ul {
    display: flex;
    gap: 30px;
}

nav a {
    color: #333;
    font-size: 16px;
    padding: 5px 0;
    position: relative;
    transition: color 0.3s;
}

nav a:hover,
nav a.active {
    color: #c41230;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #c41230;
    transform: scaleX(0);
    transition: transform 0.3s;
}

nav a:hover::after,
nav a.active::after {
    transform: scaleX(1);
}

/* 主要内容区域 */
main {
    margin-top: 80px;
    min-height: calc(100vh - 80px - 300px);
}

/* 底部样式 */
footer {
    background-color: #333;
    color: #fff;
    padding: 50px 0 20px;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 30px;
    padding: 0 50px;
}

.footer-info h3,
.footer-links h3 {
    font-size: 18px;
    margin-bottom: 20px;
    color: #fff;
}

.footer-info p {
    margin-bottom: 10px;
    color: #ccc;
}

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

.footer-links a {
    color: #ccc;
    transition: color 0.3s;
}

.footer-links a:hover {
    color: #fff;
}

.footer-copyright {
    grid-column: 1 / -1;
    text-align: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

/* 响应式设计 */
@media screen and (max-width: 768px) {
    .header-content {
        flex-direction: column;
        padding: 15px;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 15px;
    }

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