*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Hiragino Sans GB,Microsoft YaHei,sans-serif;-webkit-font-smoothing:antialiased;background:#f0f2f5}#root{height:100vh}.login-container{display:flex;justify-content:center;align-items:center;min-height:100vh;background:linear-gradient(135deg,#667eea,#764ba2)}.login-card{width:400px;padding:40px;background:#fff;border-radius:8px;box-shadow:0 8px 32px #0000001a}.login-card h1{text-align:center;margin-bottom:32px;font-size:24px;color:#1a1a1a}.stat-card{text-align:center}.stat-card .stat-value{font-size:28px;font-weight:700;color:#1677ff}.stat-card .stat-label{font-size:14px;color:#8c8c8c;margin-top:4px}.page-container{padding:24px}.page-header{margin-bottom:24px}.page-header h2{font-size:20px;font-weight:600}.scanner-container{max-width:480px;margin:0 auto;padding:16px}#qr-reader{border-radius:8px;overflow:hidden}@media print{.no-print{display:none!important}}