:root{font-family:IBM Plex Sans,Noto Sans SC,PingFang SC,sans-serif;line-height:1.5;font-weight:400;color:#152238;background-color:#eef3ff}*{box-sizing:border-box}body{margin:0;min-height:100vh;background:radial-gradient(circle at 15% 20%,rgba(14,116,144,.2),transparent 30%),radial-gradient(circle at 85% 80%,rgba(194,65,12,.18),transparent 30%),linear-gradient(140deg,#f2f6ff,#eefaf8)}.page{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.card{width:min(520px,100%);background:#fffffff0;border:1px solid rgba(14,116,144,.15);border-radius:14px;box-shadow:0 18px 36px #15223829;padding:26px;animation:card-in .28s ease-out}h1{margin:0 0 12px;font-size:26px;letter-spacing:.3px}.subtitle{margin:0 0 20px;font-size:14px;color:#475569;line-height:1.55}.subtitle code{font-size:12px;padding:1px 5px;border-radius:4px;background:#0f766e14;color:#0f766e}.hint{display:block;margin-top:6px;font-size:12px;color:#64748b;line-height:1.45}.hint code{font-size:11px;padding:0 4px;border-radius:3px;background:#0369a114;color:#0369a1}.field{display:block;margin-bottom:16px}.field span{display:block;margin-bottom:8px;font-size:14px;color:#30435f}input[type=file],input[type=text],input[type=password]{width:100%;border:1px solid #b7c8df;border-radius:8px;padding:10px 12px;font-size:14px;background:#fff}.submit{width:100%;margin-top:4px;border:none;border-radius:8px;padding:10px 14px;font-size:15px;font-weight:600;color:#fff;background:linear-gradient(120deg,#0f766e,#0369a1);cursor:pointer}.submit:disabled{background:#90a3bf;cursor:not-allowed}.message{margin:12px 0 0;white-space:pre-line;font-size:14px}.error{color:#b91c1c}.success{color:#047857}.file-name{display:block;margin-top:8px;color:#475569;font-size:12px}@keyframes card-in{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}