:root{--ink:#172519;--cream:#f5f2e9;--paper:#fffdf8;--orange:#f15c3e;--green:#174c37;--line:#d8ddd2}*{box-sizing:border-box}body{margin:0;background:var(--cream);color:var(--ink);font-family:system-ui,-apple-system,sans-serif}header,main{max-width:920px;margin:auto;padding-left:24px;padding-right:24px}header{height:78px;display:flex;align-items:center;justify-content:space-between}.brand{font-weight:900;letter-spacing:-1px;color:var(--ink);text-decoration:none}nav{display:flex;gap:16px;flex-wrap:wrap}nav a,.back{font-size:13px;color:var(--ink);font-weight:700;text-decoration:none}.back{display:inline-block;margin-top:34px}.eyebrow{font-size:11px;letter-spacing:.12em;color:#536153;margin-top:38px}h1{font-size:clamp(40px,7vw,66px);letter-spacing:-.06em;margin:10px 0}.intro{font-size:18px;line-height:1.6;color:#586457;max-width:700px}.card{background:var(--paper);border:1px solid var(--line);border-radius:16px;padding:26px;margin:24px 0 48px}.card+ .card{margin-top:-24px}h2{font-size:21px;margin:18px 0 8px}p,li{line-height:1.65;color:#526052}a{color:#174c37}.checker label{display:block;font-size:13px;font-weight:700;margin-top:16px}.checker select{display:block;width:100%;margin-top:7px;padding:11px;border:1px solid var(--line);border-radius:7px;background:#fff;font:inherit}.checker button,.button{display:inline-block;margin-top:18px;border:0;border-radius:7px;background:var(--green);color:white;padding:11px 15px;text-decoration:none;font-weight:800}.result{font-weight:700}@media(max-width:650px){header{height:auto;padding-top:20px;padding-bottom:20px;align-items:flex-start;gap:18px;flex-direction:column}nav{gap:12px}}