:root{--bg: #f5f6f8;--card: #ffffff;--border: #e5e7eb;--border-strong: #d6d9de;--text: #1f2329;--text-2: #646a73;--text-3: #8f959e;--soft: #f7f8fa;--ink: #1f2329;--ok-bg: #ecf7f0;--ok-fg: #067647;--err-bg: #fef3f2;--err-fg: #b42318;--radius: 10px;color:var(--text);background:var(--bg);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}*{box-sizing:border-box}body{margin:0}.shell{min-height:100vh;padding:24px 20px}.panel{max-width:560px;margin:0 auto;background:var(--card);border:1px solid var(--border);border-radius:14px;padding:24px;box-shadow:0 1px 2px #1018280a}.panel-head{margin-bottom:20px}.eyebrow{display:inline-block;font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--text-3);margin-bottom:8px}h1{margin:0;font-size:20px;font-weight:700;letter-spacing:-.01em}.panel-head p{margin:8px 0 0;color:var(--text-2);font-size:13px;line-height:1.6}.field{margin-top:16px;display:flex;flex-direction:column;gap:7px}.field-label{font-size:13px;font-weight:600;color:var(--text)}.control{width:100%;min-height:38px;border:1px solid var(--border-strong);border-radius:8px;padding:8px 11px;color:var(--text);font-size:14px;background:#fff;transition:border-color .15s ease,box-shadow .15s ease}.control::placeholder{color:var(--text-3)}.control:focus{outline:none;border-color:var(--ink);box-shadow:0 0 0 3px #1f232914}.desc{margin-top:12px;padding:10px 12px;background:var(--soft);border:1px solid var(--border);border-radius:8px;font-size:13px;line-height:1.6;color:var(--text-2)}.divider{height:1px;background:var(--border);margin:20px 0 4px}.segmented{display:grid;grid-template-columns:1fr 1fr;gap:10px}.seg{text-align:left;display:flex;flex-direction:column;gap:3px;min-height:auto;padding:11px 12px;background:#fff;border:1px solid var(--border-strong);border-radius:9px;cursor:pointer;color:var(--text-2);font-weight:400;transition:border-color .15s ease,background .15s ease}.seg:hover{background:var(--soft)}.seg.is-active{border-color:var(--ink);background:var(--soft);color:var(--text)}.seg-title{font-size:13.5px;font-weight:600}.seg-sub{font-size:12px;line-height:1.45;color:var(--text-3)}.seg.is-active .seg-sub{color:var(--text-2)}.hint{font-size:12px;line-height:1.5;color:var(--text-3)}.note{margin:16px 0 0;padding:9px 12px;border-radius:8px;font-size:13px;line-height:1.5}.note-ok{background:var(--ok-bg);color:var(--ok-fg)}.note-err{background:var(--err-bg);color:var(--err-fg)}.actions{display:flex;justify-content:flex-end;align-items:center;gap:10px;margin-top:24px}button{font-family:inherit}.btn-primary,.btn-ghost{min-height:38px;padding:0 18px;border-radius:8px;font-size:14px;font-weight:600;cursor:pointer;transition:background .15s ease,border-color .15s ease,color .15s ease}.btn-primary{border:1px solid var(--ink);background:var(--ink);color:#fff}.btn-primary:hover:not(:disabled){background:#000}.btn-ghost{border:1px solid var(--border-strong);background:#fff;color:var(--text)}.btn-ghost:hover:not(:disabled){background:var(--soft)}.btn-primary:disabled,.btn-ghost:disabled{opacity:.5;cursor:not-allowed}@media (max-width: 480px){.shell{padding:14px}.panel{padding:18px}.segmented{grid-template-columns:1fr}}