:root{--ink:#1d2321;--muted:#5d6763;--line:#dfe5e1;--bg:#fbfaf6;--accent:#1f6f4a;--accent2:#e8a317;--card:#fff}
*{box-sizing:border-box}
body{margin:0;font:17px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;color:var(--ink);background:var(--bg)}
.wrap{max-width:980px;margin:0 auto;padding:0 18px}
.top{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
.top .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:6px 18px;padding:10px 18px}
.brand{font-weight:800;color:var(--accent);text-decoration:none;font-size:19px}
nav{display:flex;flex-wrap:wrap;gap:4px 14px}
nav a{color:var(--ink);text-decoration:none;font-size:15px}
nav a[aria-current]{color:var(--accent);font-weight:700}
h1{font-size:clamp(28px,5vw,40px);line-height:1.15;margin:28px 0 4px}
h2{margin-top:36px}
.updated{color:var(--muted);font-size:14px;margin:0 0 16px}
.lead{font-size:19px}
a{color:var(--accent)}
.btn{display:inline-block;background:var(--accent);color:#fff;padding:11px 18px;border-radius:8px;text-decoration:none;font-weight:700;border:0;font-size:16px;cursor:pointer;margin:4px 6px 4px 0}
.btn.ghost{background:#fff;color:var(--accent);border:2px solid var(--accent)}
.cards{list-style:none;padding:0;display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:12px}
.cards a{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:14px;text-decoration:none;color:var(--ink);height:100%}
.cards span{display:block;color:var(--muted);font-size:14px}
.calc{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:14px;margin:18px 0}
fieldset,.adv{border:1px solid var(--line);border-radius:10px;background:#fff;padding:12px 14px;margin:0}
legend{font-weight:700;padding:0 4px}
label{display:block;margin:8px 0;font-size:15px}
label small{color:var(--muted)}
input,select,textarea{display:block;width:100%;margin-top:4px;padding:9px 10px;font:inherit;border:1px solid #c9d2cd;border-radius:7px;background:#fff}
.chk{display:flex;gap:8px;align-items:flex-start}
.chk input{width:auto;margin-top:5px}
.adv summary{cursor:pointer;font-weight:600}
.result{background:#fff;border:2px solid var(--accent);border-radius:12px;padding:14px 16px;margin:10px 0 24px}
.sum{font-size:18px;margin-top:0}
.tbl{overflow-x:auto}
table{border-collapse:collapse;width:100%;font-size:15px;background:#fff}
th,td{border-bottom:1px solid var(--line);padding:8px 10px;text-align:left;white-space:nowrap}
th{background:#f1f4f2}
tr.best td{background:#fff6dd;font-weight:700}
.ev{background:#eef6f1;padding:10px 12px;border-radius:8px}
.small{font-size:14px;color:var(--muted)}
.faq details{background:#fff;border:1px solid var(--line);border-radius:8px;padding:10px 14px;margin:8px 0}
.faq summary{font-weight:600;cursor:pointer}
.quote{max-width:520px}
.hp{position:absolute;left:-9999px}
footer{margin-top:50px;border-top:1px solid var(--line);background:#fff;font-size:14px;color:var(--muted);padding:18px 0}
.ref{background:#fffaf0;border:1px solid #f0d9a6;border-radius:10px;padding:12px 14px;margin:22px 0;font-size:15px}