:root{color-scheme:light;--bg: #f4f7f8;--card: #ffffff;--text: #1c2b33;--muted: #5b6b73;--line: #e2eaed;--accent: #0f8f86;--accent-dark: #0b6f69;--ok: #1b8a4c;--ok-bg: #e8f7ee;--bad: #c0392b;--bad-bg: #fdecea;--warn: #b7791f;--shadow: 0 10px 30px rgba(28, 43, 51, .06);font-family:Inter,Segoe UI,system-ui,sans-serif}*{box-sizing:border-box}html,body,#app{margin:0;min-height:100%}body{background:var(--bg);color:var(--text)}.app{max-width:920px;margin:0 auto;padding:24px 20px 40px}.header{display:flex;gap:16px;align-items:center;margin-bottom:20px}.logo{width:48px;height:48px;border-radius:14px;background:linear-gradient(135deg,#0f8f86,#1aa8c5);color:#fff;display:grid;place-items:center;font-weight:700;letter-spacing:.02em}h1{font-size:22px;margin:0 0 4px}.lead{margin:0;color:var(--muted);font-size:14px}.grid{display:grid;gap:16px}.grid.two{grid-template-columns:1fr 1fr}@media(max-width:760px){.grid.two{grid-template-columns:1fr}}.card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:18px;box-shadow:var(--shadow)}.card h2{margin:0 0 12px;font-size:16px}.row{display:flex;justify-content:space-between;gap:12px;margin:8px 0;font-size:14px}.row span{color:var(--muted)}.badge{display:inline-flex;align-items:center;gap:6px;border-radius:999px;padding:4px 10px;font-size:12px;font-weight:600}.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.bad{background:var(--bad-bg);color:var(--bad)}.badge.warn{background:#fff6e5;color:var(--warn)}label{display:block;font-size:13px;font-weight:600;margin-bottom:8px}input,select,textarea{width:100%;border:1px solid var(--line);border-radius:12px;padding:11px 12px;font:inherit;background:#fff}input:focus,select:focus{outline:2px solid rgba(15,143,134,.25);border-color:var(--accent)}.status{margin-top:10px;border-radius:12px;padding:10px 12px;font-size:14px;line-height:1.45}.status.idle{background:#f3f6f7;color:var(--muted)}.status.checking{background:#eef7fb;color:#1b6b86}.status.valid{background:var(--ok-bg);color:var(--ok)}.status.invalid{background:var(--bad-bg);color:var(--bad)}.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}button{border:0;border-radius:12px;padding:10px 14px;font:inherit;font-weight:600;cursor:pointer}button.primary{background:var(--accent);color:#fff}button.primary:hover{background:var(--accent-dark)}button.ghost{background:#eef3f4;color:var(--text)}button:disabled{opacity:.55;cursor:not-allowed}.hint{color:var(--muted);font-size:13px;line-height:1.5}.list{margin:0;padding-left:18px}.banner{background:#fff6e5;color:#7a5410;border-radius:12px;padding:10px 12px;margin-bottom:16px;font-size:13px}table{width:100%;border-collapse:collapse;font-size:13px}th,td{text-align:left;padding:8px 6px;border-bottom:1px solid var(--line)}