* { box-sizing: border-box; margin: 0; padding: 0; }
        body {
            font-family: Arial, sans-serif;
            background: #f5f7fa;
            min-height: 100vh;
            display: flex;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        .card {
            background: white;
            border-radius: 16px;
            padding: 48px 40px;
            max-width: 400px;
            width: 100%;
            box-shadow: 0 4px 24px rgba(0,0,0,0.10);
            text-align: center;
        }
        .logo-wrap {
            width: 120px;
            height: 120px;
            margin: 0 auto 20px;
            border-radius: 24px;
            overflow: hidden;
            background: white;
            box-shadow: 0 2px 16px rgba(0,0,0,0.10);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .logo {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }
        h1 {
            display: none;
        }
        
        .tagline {
            color: #888;
            font-size: 14px;
            margin-bottom: 36px;
            line-height: 1.5;
        }
        .btn-google {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 12px;
            width: 100%;
            padding: 14px 20px;
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 10px;
            text-decoration: none;
            font-size: 15px;
            font-weight: bold;
            color: #333;
            transition: border-color 0.2s, box-shadow 0.2s;
        }
        .btn-google:hover {
            border-color: #4285f4;
            box-shadow: 0 2px 8px rgba(66,133,244,0.15);
        }
        .google-icon {
            width: 20px;
            height: 20px;
        }
        .divider {
            border: none;
            border-top: 1px solid #f0f0f0;
            margin: 32px 0 20px;
        }
        .footer {
            color: #bbb;
            font-size: 12px;
        }