<!DOCTYPE html>
<html lang="zh-CN">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>CoreWing - 后台管理系统</title>
    <style>
        :root {
            --primary-color: #5B5FDE;
            --secondary-color: #0EA5E9;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
        }

        .container {
            text-align: center;
        }

        .logo {
            font-size: 72px;
            margin-bottom: 20px;
            animation: pulse 2s ease-in-out infinite;
        }

        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.05); }
        }

        h1 {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        p {
            font-size: 18px;
            opacity: 0.9;
            margin-bottom: 30px;
        }

        .loading {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            font-size: 16px;
        }

        .spinner {
            width: 20px;
            height: 20px;
            border: 3px solid rgba(255, 255, 255, 0.3);
            border-top-color: white;
            border-radius: 50%;
            animation: spin 0.8s linear infinite;
        }

        @keyframes spin {
            to { transform: rotate(360deg); }
        }
    </style>
    <script>
        // 自动跳转到后台登录页面
        window.location.href = '/admin/login.html';
    </script>
</head>
<body>
<div class="container">
    <div class="logo">🚀</div>
    <h1>CoreWing</h1>
    <p>后台管理系统</p>
    <div class="loading">
        <div class="spinner"></div>
        <span>正在跳转...</span>
    </div>
</div>
</body>
</html>