:root{--bg:#f4f7fb;--surface:#fff;--text:#10233a;--muted:#5f7085;--primary:#0f766e;--primary-strong:#0a5a54;--danger:#b42318;--border:#d6e1ee}*{box-sizing:border-box}body{margin:0;font-family:Avenir Next,Segoe UI,sans-serif;background:radial-gradient(circle at 20% 0,#dbf1ee 0,rgba(219,241,238,0) 40%),radial-gradient(circle at 90% 10%,#e3edf8 0,rgba(227,237,248,0) 35%),var(--bg);color:var(--text)}a{color:inherit;text-decoration:none}main{max-width:980px;margin:0 auto;padding:24px}.card{background:var(--surface);border:1px solid var(--border);border-radius:16px;padding:18px;box-shadow:0 10px 24px rgba(11,29,51,.06)}.grid{display:grid;grid-gap:16px;gap:16px}.grid.two{grid-template-columns:repeat(auto-fit,minmax(260px,1fr))}label{font-size:14px;font-weight:600}input,select,textarea{width:100%;margin-top:6px;border:1px solid var(--border);border-radius:10px;padding:10px 12px;font-size:14px;background:#fff}textarea{min-height:110px;resize:vertical}button{border:0;border-radius:10px;padding:10px 14px;font-weight:700;cursor:pointer;color:#fff;background:var(--primary)}button:hover{background:var(--primary-strong)}button.secondary{background:#38627f}button:disabled{opacity:.55;cursor:not-allowed}nav.top{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}nav.top .links{display:flex;gap:8px;flex-wrap:wrap}nav.top .links a{padding:8px 12px;border-radius:999px;background:#eaf2fb;border:1px solid var(--border);font-size:13px}.small{font-size:12px;color:var(--muted)}.error{color:var(--danger);font-size:13px}pre{overflow:auto;background:#0d1b2a;color:#d6e4f0;padding:12px;border-radius:10px;font-size:12px}code.inline{background:#ecf3ff;border-radius:6px;padding:2px 6px}.overlay{position:fixed;inset:0;background:rgba(16,35,58,.45);display:grid;place-items:center;z-index:1000}.overlay-card{background:#fff;border:1px solid var(--border);border-radius:14px;padding:18px;width:min(420px,90vw);text-align:center}.spinner{width:32px;height:32px;border:3px solid #d6e1ee;border-top-color:#0f766e;border-radius:50%;margin:0 auto 12px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0deg)}to{transform:rotate(1turn)}}