/* 通用样式重置 */
        *, ::after, ::before {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, PingFangSC-Regular, "PingFang SC", 
                         "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
            font-size: 14px;
            color: #f3f5f8;
            background-color: #2c2c2e;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
        }

        /* Header 样式 */
        .header {
            position: fixed;
            top: 0;
            width: 100%;
            background-color: rgba(12, 15, 17, 0.8);
            color: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 25px;
            box-shadow: 0 4px 16px 4px rgba(0, 0, 0, 0.2);
            backdrop-filter: blur(60px);
            z-index: 1000;
            height: 60px; /* 固定header高度 */
        }

        .header .logo img {
            height: 35px;
        }

        .header .menu {
            display: flex;
            gap: 20px;
        }

        .header .menu a {
            color: white;
            text-decoration: none;
            position: relative;
            padding: 10px 0;
            transition: color 0.2s;
        }

        .header .menu a:hover,
        .header .menu a.active {
            color: #3498db;
        }

        .main-container {
            flex: 1;
            margin-top: 55px; /* header高度 */
            padding: 20px;
            display: flex;
            flex-direction: column;
            height: calc(100vh - 55px - 89px); /* 减去header和footer的高度 */
            min-height: 0; /* 重要：允许内容区域缩小 */
        }

        /* iframe容器 - 修改 */
        .iframe-container {
            flex: 1;
            display: flex;
            flex-direction: column;
            background: #1c1c1e;
            border-radius: 8px;
            overflow: hidden;
            min-height: 0; /* 重要：允许容器缩小 */
        }

        /* iframe - 修改 */
        .content-frame {
            flex: 1;
            width: 100%;
            height: 100%;
            border: none;
            background: #1c1c1e;
        }

        /* Footer 样式 */
        .footer {
            background: #0c0f11;
            padding: 24px 0;
            margin-top: auto;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 24px;
            text-align: center;
        }

        .footer-links {
            display: flex;
            gap: 32px;
        }

        .footer a {
            color: rgba(243, 245, 248, 0.7);
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .footer a:hover {
            color: #3498db;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .header {
                padding: 10px 15px;
            }

            .main-container {
                padding: 10px;
            }

            .footer {
                padding: 16px 0;
            }

            .footer-links {
                flex-direction: column;
                gap: 16px;
            }
        }
        
                /* 响应式设计调整 */
        @media (max-width: 768px) {
            .main-container {
                padding: 10px;
                height: calc(100vh - 55px - 121px); /* 移动端footer高度可能不同，需要调整 */
            }
        }