body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
            background: #f5f7fa;
            margin: 0;
            padding: 20px;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
        }
        
        .redirect-box {
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 20px rgba(0,0,0,0.1);
            max-width: 500px;
            width: 100%;
            overflow: hidden;
        }
        
        .logo-container {
            background: #409eff;
            padding: 25px;
            text-align: center;
        }
        
        .logo-img {
            height: 50px;
        }
        
        .content-box {
            padding: 30px;
        }
        
        .content-title {
            font-size: 22px;
            font-weight: bold;
            color: #333;
            margin-bottom: 15px;
        }
        
        .content-text {
            color: #f56c6c;
            background: #fef0f0;
            padding: 12px 15px;
            border-radius: 6px;
            margin-bottom: 20px;
            border-left: 4px solid #f56c6c;
        }
        
        .content-link {
            background: #f8f9fa;
            border: 1px solid #ebeef5;
            border-radius: 6px;
            padding: 15px;
            margin-bottom: 25px;
            word-break: break-all;
            font-size: 15px;
            color: #606266;
        }
        
        .external-link-btn {
            display: block;
            width: 100%;
            padding: 14px;
            background: #409eff;
            color: white;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 500;
            cursor: pointer;
            text-align: center;
            transition: background 0.3s;
        }
        
        .external-link-btn:hover {
            background: #66b1ff;
        }
        
        .countdown {
            text-align: center;
            margin-top: 15px;
            color: #909399;
            font-size: 14px;
        }