:root{--ink:#1d2329;--muted:#5b6670;--line:#dde3e8;--bg:#fff;--soft:#f4f7f6;--acc:#0b7a5a;--acc2:#e8f4ef}
*{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)}
a{color:var(--acc)}header.site{border-bottom:1px solid var(--line);background:#fff}
.wrap{max-width:900px;margin:0 auto;padding:0 18px}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px;padding:12px 18px}
.logo{font-weight:800;font-size:1.25rem;text-decoration:none;color:var(--ink)}.logo span{color:var(--acc)}
nav a{margin-left:14px;text-decoration:none;color:var(--muted);font-size:.95rem}nav a:first-child{margin-left:0}
h1{font-size:2rem;line-height:1.2;margin:28px 0 10px}h2{margin-top:34px;font-size:1.35rem}h3{font-size:1.1rem}
.lede{color:var(--muted);font-size:1.08rem}
.calc{background:var(--soft);border:1px solid var(--line);border-radius:12px;padding:18px;margin:20px 0}
.calc form{display:grid;grid-template-columns:repeat(auto-fit,minmax(230px,1fr));gap:12px}
.calc label{display:flex;flex-direction:column;font-size:.92rem;color:var(--muted)}
.calc label.cb{flex-direction:row;align-items:center;gap:8px}
.calc input,.calc select{font:inherit;padding:8px;border:1px solid #c7d0d6;border-radius:8px;background:#fff;color:var(--ink)}
.calc button{grid-column:1/-1;justify-self:start;background:var(--acc);color:#fff;border:0;border-radius:8px;padding:10px 18px;font:inherit;font-weight:600;cursor:pointer}
.out{margin-top:14px;background:#fff;border-radius:10px;border:1px solid var(--line);padding:6px 12px}
table.res{width:100%;border-collapse:collapse}table.res th,table.res td{padding:8px 4px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}table.res td{font-weight:600}table.res tr:last-child th,table.res tr:last-child td{border:0}
.note{font-size:.88rem;color:var(--muted)}
.disclaimer{background:#fff8e6;border:1px solid #f0dca4;border-radius:10px;padding:12px 14px;font-size:.92rem}
.slot{border:2px dashed #c7d0d6;border-radius:10px;padding:14px;text-align:center;color:#8a959e;font-size:.85rem;margin:22px 0}
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:14px;margin:18px 0}
.card{border:1px solid var(--line);border-radius:12px;padding:14px 16px;text-decoration:none;color:var(--ink)}.card:hover{border-color:var(--acc);background:var(--acc2)}.card h3{margin:0 0 4px;color:var(--acc)}.card p{margin:0;color:var(--muted);font-size:.93rem}
details{border-bottom:1px solid var(--line);padding:10px 0}summary{font-weight:600;cursor:pointer}
footer{margin-top:50px;border-top:1px solid var(--line);background:var(--soft);padding:22px 0;font-size:.9rem;color:var(--muted)}
footer a{color:var(--muted);margin-right:14px}
.sources li{font-size:.9rem;word-break:break-word}
@media(max-width:560px){h1{font-size:1.6rem}nav a{margin-left:10px}}