:root{--navy:#000080;--navy-deep:#000060;--celeste:#4f9dd6;--celeste-soft:#e8f1f9;--paper:#f6f5ef;--card:#ffffff;--ink:#1b1e29;--muted:#6b7280;--line:#e4e2d8;--danger:#c0392b;--ok:#2e7d52;--warn:#c98a16;--radius:12px;--shadow:0 1px 2px rgba(18,18,89,0.06),0 6px 20px rgba(18,18,89,0.05)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{background:var(--paper);color:var(--ink);font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;-webkit-font-smoothing:antialiased}a{color:var(--navy)}button,input,select,textarea{font-family:inherit}input,select,textarea{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:11px 13px;font-size:16px;width:100%;outline:none;transition:border-color .15s,box-shadow .15s}input:focus,select:focus,textarea:focus{border-color:var(--celeste);box-shadow:0 0 0 3px var(--celeste-soft)}.btn{border:none;border-radius:10px;padding:11px 16px;font-size:15px;font-weight:600;cursor:pointer;transition:filter .15s,background .15s}.btn:disabled{opacity:.55;cursor:default}.btn-primary{background:var(--navy);color:#fff}.btn-primary:hover:not(:disabled){filter:brightness(1.12)}.btn-accent{background:var(--celeste);color:#fff}.btn-accent:hover:not(:disabled){filter:brightness(1.06)}.btn-ghost{background:transparent;color:var(--navy);border:1px solid var(--line)}.btn-ghost:hover:not(:disabled){border-color:var(--celeste)}.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow)}.muted{color:var(--muted);font-size:13px}.app-shell{max-width:760px;margin:0 auto;padding:20px 16px 48px}.brandbar{display:flex;align-items:center;gap:10px;margin-bottom:20px}.md{font-size:15px;line-height:1.55}.md p{margin:0 0 10px}.md p:last-child{margin-bottom:0}.md strong{font-weight:700;color:var(--navy-deep)}.md ol,.md ul{margin:6px 0 12px;padding-left:20px}.md li{margin:4px 0}.md h1,.md h2,.md h3{font-size:15px;font-weight:700;margin:14px 0 6px;color:var(--navy-deep)}.md code{background:var(--celeste-soft);padding:1px 5px;border-radius:4px;font-size:13px}@keyframes cch-spin{to{transform:rotate(1turn)}}.spinner{width:15px;height:15px;border-radius:50%;border:2px solid var(--line);border-top-color:var(--celeste);display:inline-block;animation:cch-spin .7s linear infinite}