*{box-sizing:border-box}body{margin:0;font-family:Arial,"Microsoft YaHei",sans-serif;background:linear-gradient(135deg,#1f2937,#111827);min-height:100vh}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-card{width:360px;background:#fff;border-radius:12px;padding:30px;box-shadow:0 15px 40px rgba(0,0,0,.25)}.login-card h1{margin:0 0 18px;font-size:24px;text-align:center}.login-card .sub{font-size:13px;color:#6b7280;text-align:center;margin-top:-8px}.login-card label{display:block;margin:14px 0 6px;font-weight:600;color:#374151}.login-card input{width:100%;height:40px;border:1px solid #d1d5db;border-radius:6px;padding:0 10px}.login-card button{width:100%;height:42px;margin-top:20px;background:#2563eb;color:white;border:0;border-radius:6px;cursor:pointer;font-size:15px}.error{background:#fee2e2;color:#b91c1c;border:1px solid #fecaca;border-radius:6px;padding:10px;margin-bottom:12px}.admin-login-page{background:linear-gradient(135deg,#0f172a,#1e3a8a)}