:root{--bg:#fbfaf7;--fg:#1d2321;--muted:#5b6662;--brand:#0e7c5a;--brand2:#0a5c43;--card:#fff;--line:#e3e1da;--warn:#8a5a00}
*{box-sizing:border-box}html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;background:var(--bg);color:var(--fg)}
a{color:var(--brand2)}header.site{background:#fff;border-bottom:1px solid var(--line)}
.wrap{max-width:960px;margin:0 auto;padding:0 18px}
.nav{display:flex;flex-wrap:wrap;gap:6px 18px;align-items:center;padding:12px 0}
.logo{font-weight:800;font-size:1.25rem;color:var(--fg);text-decoration:none;margin-right:auto}.logo span{color:var(--brand)}
.nav a.l{text-decoration:none;color:var(--muted);font-size:.95rem}.nav a.l:hover{color:var(--brand2)}
h1{font-size:1.9rem;line-height:1.25;margin:28px 0 8px}h2{font-size:1.3rem;margin:32px 0 10px}
.lede{color:var(--muted);margin:0 0 18px;font-size:1.05rem}
.calc{display:grid;grid-template-columns:1fr 1fr;gap:18px}@media(max-width:760px){.calc{grid-template-columns:1fr}}
.card{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:18px}
label{display:block;font-size:.9rem;font-weight:600;margin:10px 0 4px}
input[type=number],select{width:100%;padding:10px;border:1px solid #cfccc3;border-radius:8px;font-size:1rem;background:#fff}
.chk{display:flex;gap:8px;align-items:flex-start;font-weight:500}.chk input{margin-top:5px}
.hint{font-size:.8rem;color:var(--muted);margin:2px 0 0}
table.res{width:100%;border-collapse:collapse}table.res td{padding:6px 0;border-bottom:1px solid var(--line)}table.res td.v{text-align:right;font-variant-numeric:tabular-nums}
.big{font-size:1.6rem;font-weight:800;color:var(--brand2)}.neg{color:#b42318}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(210px,1fr));gap:14px}
.tile{display:block;text-decoration:none;color:var(--fg)}.tile strong{display:block;color:var(--brand2)}
details{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 14px;margin:8px 0}summary{font-weight:600;cursor:pointer}
.src{font-size:.85rem;color:var(--muted)}.note{background:#fff8e6;border:1px solid #f0dca6;color:var(--warn);border-radius:10px;padding:10px 14px;font-size:.9rem}
footer{margin:48px 0 0;padding:24px 0;border-top:1px solid var(--line);color:var(--muted);font-size:.85rem;background:#fff}
.aff{border:1px dashed var(--line);border-radius:12px;padding:14px;margin-top:24px}