* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", Arial, sans-serif;
        }
        body {
            background-color: #f5f5f5;
            color: #333;
            line-height: 1.6;
        }
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        /* 头部样式 */
        .header {
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            padding: 15px 0;
        }
        .header-top {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
        }
        .logo {
            display: flex;
            align-items: center;
        }
        .logo img {
            height: 62px;
			width:160px;
        }
        .search-box {
            flex: 1;
            max-width: 500px;
            margin: 0 20px;
            position: relative;
        }
        .search-box input {
            width: 100%;
            padding: 10px 15px;
            border: 1px solid #ddd;
            border-radius: 4px;
            font-size: 14px;
        }
        .search-box button {
            position: absolute;
            right: 0;
            top: 0;
            height: 100%;
            padding: 0 15px;
            background-color: #2a7dc9;
            color: white;
            border: none;
            border-radius: 0 4px 4px 0;
            cursor: pointer;
        }
        .user-area {
            display: flex;
            align-items: center;
        }
        .user-area a {
            margin-left: 15px;
            color: #666;
            text-decoration: none;
        }
        /* 导航条 */
        .nav {
            background-color: #2a7dc9;
        }
        .nav-list {
            display: flex;
            list-style: none;
        }
        .nav-item {
            position: relative;
        }
        .nav-item > a {
            display: block;
            padding: 12px 20px;
            color: white;
            text-decoration: none;
            font-size: 16px;
        }
        .nav-item:hover {
            background-color: #1a6cb9;
        }
        .sub-nav {
            position: absolute;
            top: 100%;
            left: 0;
            width: 200px;
            background-color: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            display: none;
            z-index: 100;
        }
        .nav-item:hover .sub-nav {
            display: block;
        }
        .sub-nav a {
            display: block;
            padding: 10px 15px;
            color: #666;
            text-decoration: none;
            border-bottom: 1px solid #eee;
        }
        .sub-nav a:hover {
            background-color: #f5f5f5;
            color: #2a7dc9;
        }

/* 导航条优化 */
.nav-item {
    position: relative;
    z-index: 100;
}

.sub-nav {
    position: absolute;
    top: 100%;
    left: 0;
    width: 600px; /* 加宽下拉框 */
    background-color: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: none;
    padding: 15px;
    border-radius: 0 0 4px 4px;
}

.sub-nav-columns {
    display: flex;
    flex-wrap: wrap;
}

.sub-nav-column {
    flex: 1;
    min-width: 150px;
    padding: 0 10px;
}

.sub-nav-column-title {
    font-weight: bold;
    color: #2a7dc9;
    padding: 5px 0;
    margin-bottom: 5px;
    border-bottom: 1px solid #eee;
}

.sub-nav-column a {
    display: block;
    padding: 8px 0;
    color: #666;
    text-decoration: none;
    font-size: 14px;
    transition: all 0.2s;
}

.sub-nav-column a:hover {
    color: #2a7dc9;
    padding-left: 5px;
}

/* 响应式调整 */
@media (max-width: 768px) {
    .sub-nav {
        position: static;
        width: 100%;
        box-shadow: none;
        padding: 0;
    }
    
    .sub-nav-columns {
        flex-direction: column;
    }
    
    .sub-nav-column {
        padding: 0;
    }
    
    .sub-nav-column-title {
        background-color: #f5f5f5;
        padding-left: 15px;
    }
    
    .sub-nav-column a {
        padding-left: 25px;
    }
}


        /* 面包屑 */
        .breadcrumb {
            padding: 15px 0;
            font-size: 14px;
            color: #999;
        }
        .breadcrumb a {
            color: #666;
            text-decoration: none;
        }
        .breadcrumb a:hover {
            color: #2a7dc9;
        }
        /* 主要内容 */
        .main {
            display: flex;
            margin: 20px 0;
        }
        .content {
            flex: 1;
            background-color: #fff;
            padding: 20px;
            border-radius: 4px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        .sidebar {
            width: 280px;
            margin-left: 20px;
        }
        .sidebar-box {
            background-color: #fff;
            padding: 15px;
            margin-bottom: 20px;
            border-radius: 4px;
            box-shadow: 0 1px 3px rgba(0,0,0,0.1);
        }
        .sidebar-title {
            font-size: 18px;
            padding-bottom: 10px;
            margin-bottom: 15px;
            border-bottom: 1px solid #eee;
            color: #2a7dc9;
        }
        .sidebar-list {
            list-style: none;
        }
        .sidebar-list li {
            margin-bottom: 10px;
            padding-bottom: 10px;
            border-bottom: 1px dashed #eee;
        }
        .sidebar-list li:last-child {
            margin-bottom: 0;
            padding-bottom: 0;
            border-bottom: none;
        }
        .sidebar-list a {
            color: #666;
            text-decoration: none;
            display: block;
        }
        .sidebar-list a:hover {
            color: #2a7dc9;
        }
        /* 文档详情 */
        .doc-title {
            font-size: 24px;
            margin-bottom: 20px;
            color: #333;
            text-align: center;
        }
        .doc-meta {
            display: flex;
            flex-wrap: wrap;
            margin-bottom: 20px;
            padding: 15px;
            background-color: #f9f9f9;
            border-radius: 4px;
        }
        .meta-item {
            margin-right: 30px;
            margin-bottom: 10px;
        }
        .meta-label {
            color: #999;
            margin-right: 5px;
        }
        .stars {
            color: #ffb800;
        }
        .download-btn {
            display: block;
            width: 100%;
            padding: 12px;
            background-color: #2a7dc9;
            color: white;
            text-align: center;
            text-decoration: none;
            border-radius: 4px;
            font-size: 18px;
            margin: 20px 0;
            transition: background-color 0.3s;
        }
        .download-btn:hover {
            background-color: #1a6cb9;
        }
        .doc-desc {
            margin: 20px 0;
            padding: 15px;
            background-color: #f9f9f9;
            border-radius: 4px;
        }
        .doc-desc-title {
            font-size: 16px;
            margin-bottom: 10px;
            color: #2a7dc9;
        }
        /* 页脚 */
        .footer {
            background-color: #333;
            color: #999;
            padding: 30px 0;
            font-size: 14px;
        }
        .footer-links {
            display: flex;
            justify-content: center;
            margin-bottom: 20px;
        }
        .footer-links a {
            color: #ccc;
            text-decoration: none;
            margin: 0 15px;
        }
        .footer-links a:hover {
            color: #fff;
        }
        .copyright {
            text-align: center;
        }
        /* 响应式设计 */
        @media (max-width: 768px) {
            .header-top {
                flex-direction: column;
            }
            .logo {
                margin-bottom: 15px;
            }
            .search-box {
                width: 100%;
                margin: 0 0 15px 0;
            }
            .nav-list {
                flex-wrap: wrap;
            }
            .nav-item {
                width: 50%;
                text-align: center;
            }
            .sub-nav {
                width: 100%;
            }
            .main {
                flex-direction: column;
            }
            .sidebar {
                width: 100%;
                margin-left: 0;
                margin-top: 20px;
            }
            .doc-title {
                font-size: 20px;
            }
            .meta-item {
                width: 50%;
                margin-right: 0;
            }
        }
/* 相关下载列表样式 */
.related-downloads {
    margin-top: 20px;
}

.related-downloads h3 {
    font-size: 16px;
    color: #2a7dc9;
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 1px solid #eee;
}

.related-downloads ul {
    list-style: none;
}

.related-downloads li {
    padding: 8px 0;
    border-bottom: 1px dashed #eee;
}

.related-downloads li:last-child {
    border-bottom: none;
}

.related-downloads a {
    color: #666;
    text-decoration: none;
}

.related-downloads a:hover {
    color: #2a7dc9;
}

.related-downloads .file-size {
    float: right;
    color: #999;
    font-size: 12px;
}