* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    font-family: "微软雅黑", sans-serif;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
}
/* 错误提示框 */
.error-box {
    background: #ff4444;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    margin: 10px 0;
}
/* 成功提示框 */
.success-box {
    background: #00C851;
    color: white;
    padding: 10px 15px;
    border-radius: 5px;
    margin: 10px 0;
}
/* 安装页样式 */
.install-container {
    max-width: 600px;
    margin: 50px auto;
    padding: 20px;
    border: 1px solid #ddd;
    border-radius: 8px;
}
.install-container h1 {
    text-align: center;
    margin-bottom: 20px;
}
.install-container h3 {
    margin: 15px 0 10px;
}
.form-item {
    margin: 10px 0;
    display: flex;
    align-items: center;
}
.form-item label {
    width: 120px;
}
.form-item input {
    flex: 1;
    padding: 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
}
button {
    padding: 10px 20px;
    background: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 15px;
}
button:hover {
    background: #0056b3;
}
/* 导航栏 */
.nav {
    display: flex;
    justify-content: space-between;
    padding: 15px 0;
    border-bottom: 1px solid #ddd;
    margin-bottom: 20px;
}
.nav a {
    margin-right: 15px;
    text-decoration: none;
    color: #333;
}
.nav a:hover {
    color: #007bff;
}
/* 视频列表 */
.video-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 20px;
}
.video-item {
    border: 1px solid #ddd;
    border-radius: 8px;
    padding: 15px;
    text-align: center;
}
.video-item a {
    text-decoration: none;
    color: #333;
}
/* 播放器容器 */
#dplayer {
    width: 100%;
    height: 500px;
    margin: 20px 0;
}
/* 上传页 */
.upload-container {
    max-width: 600px;
    margin: 0 auto;
}
.upload-container input[type="file"] {
    margin: 15px 0;
}
/* 管理员后台 */
.admin-nav {
    margin: 20px 0;
}
.admin-nav a {
    margin-right: 10px;
    padding: 8px 15px;
    background: #eee;
    border-radius: 4px;
    text-decoration: none;
    color: #333;
}
.table {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
}
.table th, .table td {
    border: 1px solid #ddd;
    padding: 10px;
    text-align: center;
}