* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: "Microsoft YaHei", Arial, sans-serif;
            font-size: 14px;
            color: #666;
            background-color: #f2f5f9;
            line-height: 1.6;
        }
        
        a {
            text-decoration: none;
            color: #666;
        }
        a:hover {
            color: #46c37b;
        }
        ul {
            list-style: none;
        }
        img {
            border: none;
            max-width: 100%;
        }
        ol.breadcrumb {
    height: 40px;
    overflow: hidden;
    /* 清除ol默认的列表标记 */
    list-style: none;
    /* 清除默认内边距，避免标记占位 */
    padding-left: 0;
    margin: 0;
}

ol.breadcrumb li {
    float: left;
    line-height: 40px;
    padding: 0 8px 0 0; /* 调整间距更合理 */
    font-size: 12px;
    color: #666;
    /* 清除可能的伪元素前缀（如数字） */
    counter-increment: none;
}

/* 关键：隐藏可能通过:before生成的数字或标记 */
ol.breadcrumb li:before {
    content: none !important;
}

ol.breadcrumb li .iconfont {
    font-size: 10px;
    margin: 0 4px; /* 给分隔图标增加间距 */
    color: #999; /* 区分分隔符和文字 */
}

ol.breadcrumb li a {
    display: inline-block;
    padding: 0 2px;
    color: #666;
    vertical-align: middle;
    text-decoration: none;
}

ol.breadcrumb li a:hover {
    color: #46c37b;
    text-decoration: underline;
}

/* 最后一项通常是当前页，不加链接时的样式优化 */
ol.breadcrumb li:last-child {
    color: #333;
    font-weight: 500;
}
h1 {
    display: block;
    font-size: 14px;
    font-weight: bold;
}
        .container {
            width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        .header {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 72px;
            background: #fff;
            border-bottom: 1px solid #eee;
            z-index: 999;
        }
        .header .container {
            display: flex;
            align-items: center;
            height: 100%;
        }
        .logo {
            display: flex;
            align-items: center;
            width: 180px;
        }
        .logo img {
            width: 42px;
            height: 40px;
            margin-right: 8px;
        }
        .logo-text strong {
            font-size: 18px;
            color: #333;
            display: block;
        }
        .logo-text span {
            font-size: 12px;
            color: #888;
        }
        .nav {
            display: flex;
            margin-left: 20px;
        }
        .nav li {
            margin: 0 20px;
        }
        .nav a {
            font-size: 16px;
            color: #111;
            padding: 10px 0;
            border-bottom: 2px solid transparent;
        }
        .nav a.active, .nav a:hover {
            color: #46c37b;
            border-bottom: 2px solid #46c37b;
        }
        .search {
            display: flex;
            flex: 1;
            max-width: 367px;
            margin-left: 20px;
        }
        /* 修改搜索框样式，将选项移到左侧 */
        .search select {
            padding: 10px 14px;
            background: #eee;
            border: none;
            border-right: 1px solid #ddd;
            outline: none;
            border-radius: 6px 0 0 6px; /* 左侧圆角 */
        }
        .search input {
            flex: 1;
            padding: 10px 14px;
            background: #eee;
            border: none;
            border-left: 1px solid #ddd; /* 与select分隔 */
            outline: none;
        }
        .search-btn {
            padding: 0 15px;
            background: #46c37b;
            color: white;
            border: none;
            border-radius: 0 6px 6px 0;
            cursor: pointer;
        }
        .search-btn:hover {
            background: #3db86e;
        }
        .member {
            margin-left: auto;
        }
        .member a {
            display: flex;
            align-items: center;
            color: #333;
            cursor: pointer;
        }
        .member img {
            width: 20px;
            height: 20px;
            border-radius: 50%;
            margin-right: 5px;
        }
        .breadcrumb {
            margin-top: 72px;
            padding: 0px 0;
            font-size: 12px;
        }
        .breadcrumb a {
            color: #666;
        }
        .breadcrumb a:hover {
            color: #46c37b;
            text-decoration: underline;
        }
        .main {
            display: flex;
            margin: 20px 0;
        }
        .content {
            flex: 1;
            margin-right: 20px;
        }
        .video-player {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        /* 视频区域样式 - 确保提示内容不透明且清晰 */
        #video-container {
            width: 100%;
            height: 450px;
            position: relative;
            border-radius: 4px;
            overflow: hidden;
        }
        /* 关键修改：使用z-index和不透明度隔离提示层 */
        #video-message {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            text-align: center;
            width: 70%;
            background-color: #ffffff; /* 完全不透明的白色背景 */
            padding: 30px 20px;
            border-radius: 8px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3); /* 增强阴影使区域更突出 */
            border: 2px solid #46c37b; /* 增加边框强化区域感 */
            z-index: 10; /* 确保在背景之上 */
        }
        #video-message .main-text {
            font-size: 24px;
            margin-bottom: 25px;
            font-weight: bold;
            color: #e63946; /* 鲜艳的红色文字 */
            text-shadow: none; /* 确保无阴影干扰 */
        }
        #video-message .options {
            display: flex;
            justify-content: center;
            gap: 25px;
        }
        #video-message .option-btn {
            padding: 12px 25px;
            background: #46c37b; /* 纯绿色背景，无透明 */
            color: #ffffff; /* 纯白色文字 */
            border-radius: 6px;
            cursor: pointer;
            transition: all 0.3s;
            font-weight: bold;
            font-size: 16px;
            border: none; /* 确保无透明边框 */
        }
        #video-message .option-btn:hover {
            background: #35a05f; /* 加深颜色增强交互感 */
            transform: translateY(-2px);
            box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
        }
        /* 视频区域样式结束 */
        .video-info {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        .video-title {
            font-size: 18px;
            color: #333;
            margin-bottom: 10px;
        }
        .video-meta {
            color: #999;
            margin-bottom: 15px;
        }
        .related-videos {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
        }
        .section-title {
            font-size: 16px;
            color: #333;
            margin-bottom: 15px;
            padding-bottom: 10px;
            border-bottom: 1px solid #eee;
        }
        .video-list {
            display: flex;
            flex-wrap: wrap;
            gap: 20px;
        }
        .video-item {
            width: calc(33.333% - 14px);
        }
        .video-item img {
            width: 100%;
            height: 140px;
            object-fit: cover;
            border-radius: 4px;
        }
        .video-item p {
            margin-top: 8px;
            font-size: 14px;
            line-height: 1.4;
            height: 40px;
            overflow: hidden;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
        }
        .sidebar {
            width: 300px;
        }
        .sidebar-section {
            background: #fff;
            padding: 20px;
            border-radius: 8px;
            margin-bottom: 20px;
        }
        .resource-list li {
            margin-bottom: 10px;
        }
        .footer {
            background: #444;
            color: #999;
            padding: 30px 0;
            margin-top: 40px;
        }
        .footer-nav {
            display: flex;
            margin-bottom: 20px;
        }
        .footer-nav li {
            margin-right: 20px;
        }
        .footer-nav a {
            color: #ccc;
        }
        .copyright {
            font-size: 12px;
            line-height: 1.8;
        }
        .tab-nav {
            display: flex;
            margin-bottom: 15px;
            border-bottom: 1px solid #eee;
        }
        .tab-nav li {
            margin-right: 20px;
        }
        .tab-nav a {
            display: block;
            padding: 10px 0;
            color: #666;
            border-bottom: 2px solid transparent;
        }
        .tab-nav a.active {
            color: #46c37b;
            border-bottom: 2px solid #46c37b;
        }
        .tab-content {
            display: none;
        }
        .tab-content.active {
            display: block;
        }
        .operation-bar {
            background: #f5f5f5;
            padding: 10px 20px;
            margin-bottom: 20px;
            border-radius: 4px;
        }
        .operation-bar a {
            margin-right: 20px;
        }
        
        /* 登录弹窗样式 */
        .login-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1000;
            display: none;
            justify-content: center;
            align-items: center;
        }
        .modal-content {
            width: 650px;
            background: #fff;
            border-radius: 8px;
            overflow: hidden;
            box-shadow: 0 5px 15px rgba(0,0,0,0.3);
        }
        .modal-header {
            padding: 15px 20px;
            background: #f5f5f5;
            border-bottom: 1px solid #eee;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .modal-title {
            font-size: 16px;
            color: #333;
        }
        .close-modal {
            background: none;
            border: none;
            font-size: 20px;
            cursor: pointer;
            color: #666;
        }
        .modal-body {
            padding: 20px;
        }
        .login-iframe {
            width: 100%;
            height: 360px;
            border: none;
        }
        /* 注册弹窗样式 */
        .register-modal {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0,0,0,0.5);
            z-index: 1000;
            display: none;
            justify-content: center;
            align-items: center;
        }