:root{--bg:#f4f7fb;--card:#fff;--text:#102033;--muted:#5e7187;--line:#d9e2ec;--brand:#005eb8;--brand-dark:#003f7f;--warn:#fff4d6;--warn-border:#f4c430;--ok:#e7f6ec;--bad:#fde8e8}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font-family:Arial,Helvetica,sans-serif}.app-shell{max-width:1180px;margin:0 auto;padding:28px}.hero{display:flex;gap:20px;justify-content:space-between;align-items:stretch;margin-bottom:18px}.eyebrow{margin:0 0 8px;color:var(--brand);font-weight:700;letter-spacing:.02em}h1{font-size:clamp(2rem,4vw,3.2rem);line-height:1.05;margin:0 0 12px}.lead{font-size:1.05rem;color:var(--muted);max-width:760px;margin:0}.status-card{min-width:230px;background:var(--card);border:1px solid var(--line);border-radius:18px;padding:18px;box-shadow:0 10px 30px rgba(16,32,51,.08);display:flex;align-items:center;justify-content:center;text-align:center;font-weight:700}.status-card.ok{background:var(--ok)}.status-card.bad{background:var(--bad)}.safety-banner{background:var(--warn);border:1px solid var(--warn-border);border-radius:14px;padding:14px 16px;margin:14px 0 22px}.layout{display:grid;grid-template-columns:minmax(320px,0.95fr) minmax(360px,1.05fr);gap:22px}.panel{background:var(--card);border:1px solid var(--line);border-radius:22px;padding:22px;box-shadow:0 12px 32px rgba(16,32,51,.08)}h2{margin:0 0 18px;font-size:1.35rem}fieldset{border:1px solid var(--line);border-radius:16px;padding:16px;margin:0 0 16px}legend{padding:0 6px;font-weight:700;color:var(--brand-dark)}label{display:block;font-weight:700;margin:0 0 12px}input,select,textarea{width:100%;border:1px solid #bdc9d8;border-radius:12px;padding:12px;font-size:1rem;margin-top:6px;background:#fff}input:focus,select:focus,textarea:focus{outline:3px solid rgba(0,94,184,.2);border-color:var(--brand)}.pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}.bp-pair{grid-template-columns:1fr 1fr}.advanced{border:1px dashed var(--line);border-radius:14px;padding:12px;margin-bottom:16px}.advanced summary{font-weight:700;cursor:pointer}.advanced p{color:var(--muted);font-size:.92rem}.actions{display:flex;gap:12px;flex-wrap:wrap}button{border:0;background:var(--brand);color:#fff;border-radius:12px;padding:12px 18px;font-weight:700;font-size:1rem;cursor:pointer}button:hover{background:var(--brand-dark)}button:disabled{opacity:.5;cursor:not-allowed}.secondary{background:#eef4fb;color:var(--brand-dark);border:1px solid #c9d9ea}.secondary:hover{background:#dcebf8}.results-header{display:flex;justify-content:space-between;gap:10px;align-items:center}.messages{margin-bottom:12px}.message{padding:10px 12px;border-radius:12px;margin-bottom:8px;background:#eef4fb}.message.warn{background:var(--warn);border:1px solid var(--warn-border)}.message.error{background:var(--bad);border:1px solid #f5b5b5}.result-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.result-card{border:1px solid var(--line);border-radius:16px;padding:16px;background:#fbfdff}.result-card span{display:block;color:var(--muted);font-size:.9rem;margin-bottom:8px}.result-card strong{font-size:1.35rem}.result-card.emphasis{border-color:#b7d4f0;background:#eef7ff}textarea{height:118px;margin-top:16px;resize:vertical}footer{color:var(--muted);font-size:.9rem;margin-top:18px}code{background:#e8eef5;border-radius:6px;padding:2px 5px}@media(max-width:850px){.hero,.layout{grid-template-columns:1fr;display:grid}.status-card{min-width:0}.pair,.bp-pair,.result-grid{grid-template-columns:1fr}.app-shell{padding:16px}}