:root{color-scheme:light;font-family:ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;color:#172b2a;background:#f3f5f0}*{box-sizing:border-box}body{margin:0}main{max-width:1100px;margin:auto;padding:32px 28px 48px}header{display:flex;justify-content:space-between;gap:16px;align-items:center;border-bottom:1px solid #d8dfd5;padding-bottom:24px}.eyebrow{font-size:12px;letter-spacing:.14em;font-weight:650}.badge{font-size:12px;border:1px solid #aebdb0;border-radius:20px;padding:8px 14px}.intro{padding:58px 0 36px}h1{font-size:clamp(30px,4vw,46px);line-height:1.3;letter-spacing:-.03em;margin:18px 0}.lead{max-width:620px;color:#53645e;line-height:1.8}.grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.panel{background:#fff;border:1px solid #d8dfd5;border-radius:16px;padding:28px}.panel h2{font-size:18px;margin-top:0}.panel p,footer p{line-height:1.75;color:#53645e}button{background:#194e40;border:0;color:white;padding:12px 18px;border-radius:8px;font:inherit;cursor:pointer;margin-top:16px}button:disabled{opacity:.55;cursor:wait}button:focus-visible,select:focus-visible{outline:3px solid #779883;outline-offset:3px}label{display:block;margin-top:14px;font-size:13px;font-weight:600}select{margin-top:7px;width:100%;padding:11px;background:#fbfcfa;border:1px solid #b8c5bb;border-radius:8px;font:inherit}.result{border-left:3px solid #bacdbd;padding:4px 14px;margin-top:24px;font-size:14px;min-height:42px}.note{font-size:12px}footer{margin-top:28px;padding:22px 0;border-top:1px solid #d8dfd5;font-size:13px;max-width:900px}@media(max-width:720px){main{padding:22px 18px}header{align-items:flex-start;flex-direction:column}.intro{padding-top:32px}.grid{grid-template-columns:1fr}.panel{padding:22px}}