/* 全局重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        /* 字体和基础样式 */
        @import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');
        
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            line-height: 1.6;
            color: #333;
            background: #f8fafc;
            height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        
        /* 背景设计 */
        .bg-container {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            overflow: hidden;
            z-index: 0;
        }
        
        .bg-gradient {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            clip-path: polygon(0 0, 100% 0, 100% 70%, 0 100%);
        }
        
        .bg-shapes {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
        }
        
        .shape {
            position: absolute;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            animation: float 6s ease-in-out infinite;
        }
        
        .shape-1 {
            width: 300px;
            height: 300px;
            top: -50px;
            right: -50px;
            animation-delay: 0s;
        }
        
        .shape-2 {
            width: 200px;
            height: 200px;
            bottom: -30px;
            left: 10%;
            animation-delay: 2s;
        }
        
        .shape-3 {
            width: 150px;
            height: 150px;
            top: 40%;
            left: -50px;
            animation-delay: 4s;
        }
        
        @keyframes float {
            0%, 100% {
                transform: translateY(0) rotate(0deg);
            }
            50% {
                transform: translateY(-20px) rotate(180deg);
            }
        }
        
        /* 登录容器 */
        .login-wrapper {
            position: relative;
            z-index: 10;
            width: 100%;
            max-width: 900px;
            margin: 0 20px;
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 40px;
            background: white;
            border-radius: 24px;
            box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            animation: slideIn 0.8s ease-out;
        }
        
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(50px) scale(0.9);
            }
            to {
                opacity: 1;
                transform: translateY(0) scale(1);
            }
        }
        
        /* 左侧品牌区域 */
        .brand-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            display: flex;
            flex-direction: column;
            align-items: center;
            justify-content: center;
            padding: 60px 40px;
            color: white;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .brand-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><circle cx="50" cy="50" r="1" fill="rgba(255,255,255,0.1)"/></svg>') repeat;
            opacity: 0.3;
        }
        
        .brand-logo {
            width: 120px;
            height: 120px;
            background: rgba(255, 255, 255, 0.2);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 48px;
            margin-bottom: 32px;
            backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.3);
            animation: pulse 2s ease-in-out infinite;
        }
        
        @keyframes pulse {
            0%, 100% {
                transform: scale(1);
            }
            50% {
                transform: scale(1.05);
            }
        }
        
        .brand-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 16px;
            z-index: 1;
        }
        
        .brand-subtitle {
            font-size: 16px;
            opacity: 0.9;
            margin-bottom: 32px;
            z-index: 1;
        }