/* 通用样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    height: 100%;
}

body {
    min-height: 100%;
    background: #fff;
    font-family: "Microsoft YaHei", sans-serif;
    overflow-x: hidden;
    position: relative;
    padding-bottom: 42px; /* 底部版权区域的高度 */
}

.container {
    padding-top: 80px;
    width: 100%;
}

/* 头部导航 */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: rgba(12, 20, 46, 0.8);
    z-index: 1000;
    display: flex;
    align-items: center;
    backdrop-filter: blur(5px);
}

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

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

.logo img {
    height: 45px;
    margin-right: 10px;
}

.logo-text {
    font-size: 20px;
    font-weight: 600;
    color: #fff;
}

.nav {
    display: flex;
}

.nav-item {
    margin-left: 40px;
    color: #fff;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
    text-decoration: none;
}

.nav-item:hover {
    color: #1890ff;
}

/*.nav-item:first-child::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: #1890ff;
}*/

/* 底部版权区域 */
.copyright {
    width: 100%;
    background: #222;
    color: #999;
    padding: 15px 0;
    text-align: center;
    font-size: 12px;
    position: absolute;
    bottom: 0;
    left: 0;
}

.copyright a {
    color: #999;
    text-decoration: none;
}