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

body {
    font-family: 'Arial', sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* 容器样式 */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 头部样式 */
.header {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 15px 0;
    position: relative;
    z-index: 100;
}

.logo {
    font-size: 24px;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}

/* 广告轮播样式 */
.banner {
    width: 100%;
    height: 383px;
    position: relative;
    overflow: hidden;
    background-color: #000;
}

.carousel {
    width: 100%;
    height: 100%;
    position: relative;
}

.carousel-item {
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
    opacity: 0;
    transition: opacity 1s ease-in-out;
}

.carousel-item.active {
    opacity: 1;
}

.carousel-item img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.carousel-control {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background-color: rgba(0, 0, 0, 0.5);
    color: #fff;
    border: none;
    padding: 10px 15px;
    font-size: 24px;
    cursor: pointer;
    z-index: 10;
    transition: background-color 0.3s;
}

.carousel-control:hover {
    background-color: rgba(0, 0, 0, 0.8);
}

.carousel-control.prev {
    left: 10px;
}

.carousel-control.next {
    right: 10px;
}

/* 视频标题导航样式 */
.video-nav {
    padding: 30px 0;
    background-color: #fff;
    margin: 20px 0;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.section-title {
    font-size: 24px;
    margin-bottom: 20px;
    color: #333;
    text-align: center;
}

.video-grid {
    display: block;
    gap: 20px;
}

.video-item {
    background-color: #f9f9f9;
    border-radius: 5px;
    overflow: hidden;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
    margin-bottom: 20px;
    padding: 15px;
}

.video-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 3px 10px rgba(0, 0, 0, 0.2);
}

.video-info {
    padding: 0;
}

.video-title {
    font-size: 16px;
    font-weight: bold;
    color: #333;
    text-decoration: none;
    display: block;
    margin-bottom: 5px;
}

.video-title:hover {
    color: #e74c3c;
}

.video-meta {
    font-size: 14px;
    color: #666;
}

/* 视频播放页面样式 */
.video-player-page {
    background-color: #fff;
    margin: 20px auto;
    border-radius: 5px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 20px;
}



.video-player-container {
    max-width: 960px;
    margin: 0 auto 20px;
    position: relative;
}

.video-player {
    width: 100%;
    height: 540px;
    background-color: #000;
    border-radius: 5px;
}

.video-controls {
    margin-top: 20px;
    text-align: center;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    margin: 0 10px;
    background-color: #3498db;
    color: #fff;
    text-decoration: none;
    border-radius: 5px;
    transition: background-color 0.3s;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.btn:hover {
    background-color: #2980b9;
}

.btn-success {
    background-color: #2ecc71;
}

.btn-success:hover {
    background-color: #27ae60;
}

/* 密码验证页面样式 */
.password-verification {
    max-width: 500px;
    margin: 50px auto;
    background-color: #fff;
    padding: 30px;
    border-radius: 5px;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.password-form {
    margin-top: 20px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: bold;
}

.form-group input {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

.error-message {
    color: #e74c3c;
    margin-bottom: 20px;
}

/* 页脚样式 */
.footer {
    background-color: #333;
    color: #fff;
    text-align: center;
    padding: 20px 0;
    margin-top: 50px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .banner {
        height: 250px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    }
    
    .video-player {
        height: 360px;
    }
}

@media (max-width: 480px) {
    .banner {
        height: 200px;
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }
    
    .video-player {
        height: 240px;
    }
    

}