:root{
  --bg:#f6f7f9; --card:#fff; --ink:#111827; --muted:#6b7280; --line:#e5e7eb;
  --accent:#0f766e; --accent-soft:#ccfbf1; --warn:#b45309;
  --radius:14px; --wrap:760px;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{
  margin:0; background:var(--bg); color:var(--ink);
  font:16px/1.65 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
.wrap{max-width:var(--wrap); margin:0 auto; padding:0 18px}
a{color:var(--accent)}

header.site{background:#fff; border-bottom:1px solid var(--line)}
.bar{display:flex; flex-wrap:wrap; align-items:center; gap:10px 18px; padding:14px 18px; max-width:var(--wrap)}
.brand{font-weight:800; font-size:19px; text-decoration:none; color:var(--ink); letter-spacing:-.02em}
.brand span{color:var(--accent)}
header nav{display:flex; flex-wrap:wrap; gap:14px; font-size:14px}
header nav a{color:var(--muted); text-decoration:none}
header nav a:hover{color:var(--accent)}

main{padding:26px 18px 60px}
h1{font-size:clamp(25px,4.6vw,34px); line-height:1.2; letter-spacing:-.02em; margin:.2em 0 .5em}
h2{font-size:21px; margin:2em 0 .5em; letter-spacing:-.01em}
h3{font-size:17px; margin:1.4em 0 .4em}
p{margin:.7em 0}
ul,ol{padding-left:1.25em}
li{margin:.35em 0}
.lede{font-size:17px; color:#374151}

.card{background:var(--card); border:1px solid var(--line); border-radius:var(--radius); padding:20px; margin:22px 0}
.calc-card{padding:22px}
.fields{display:grid; grid-template-columns:repeat(auto-fit,minmax(165px,1fr)); gap:14px}
.field{display:flex; flex-direction:column; gap:6px}
.field label{font-size:13px; font-weight:600; color:#374151}
.unit{font-weight:400; color:var(--muted)}
input,select{
  font:inherit; padding:10px 12px; border:1px solid #d1d5db; border-radius:9px;
  background:#fff; width:100%; color:var(--ink);
}
input:focus,select:focus{outline:2px solid var(--accent); outline-offset:1px; border-color:var(--accent)}

.result{margin-top:20px; border-top:1px solid var(--line); padding-top:18px}
.headline{background:var(--accent-soft); border-radius:11px; padding:14px 16px; display:flex; flex-wrap:wrap; justify-content:space-between; align-items:baseline; gap:6px}
.hl-label{font-size:14px; font-weight:600; color:#0f766e}
.hl-value{font-size:24px; font-weight:800; color:#134e4a; letter-spacing:-.02em}
table.rt{width:100%; border-collapse:collapse; margin-top:12px; font-size:15px}
table.rt th{text-align:left; font-weight:500; color:var(--muted); padding:8px 0; border-bottom:1px solid var(--line)}
table.rt td{text-align:right; padding:8px 0; border-bottom:1px solid var(--line); font-weight:600}
table.rt tr:last-child th,table.rt tr:last-child td{border-bottom:0}
.note{display:block; font-weight:400; font-size:12.5px; color:var(--muted)}
.err{color:#b91c1c}

.grid{display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:16px; margin:24px 0}
a.tool{display:block; background:#fff; border:1px solid var(--line); border-radius:var(--radius); padding:18px; text-decoration:none; color:var(--ink)}
a.tool:hover{border-color:var(--accent)}
a.tool strong{display:block; font-size:16px; margin-bottom:4px}
a.tool span{font-size:14px; color:var(--muted)}

table.data{width:100%; border-collapse:collapse; font-size:15px; margin:14px 0}
table.data th,table.data td{padding:9px 10px; border-bottom:1px solid var(--line); text-align:left}
table.data th{background:#f3f4f6; font-size:13px; text-transform:uppercase; letter-spacing:.04em; color:var(--muted)}
table.data td:not(:first-child){text-align:right}

details.faq{border-bottom:1px solid var(--line); padding:12px 0}
details.faq summary{cursor:pointer; font-weight:600}
details.faq p{margin:.6em 0 0; color:#374151}

.aff{background:#fffbeb; border:1px solid #fde68a; border-radius:var(--radius); padding:16px 20px; margin:24px 0}
.aff h3{margin-top:0}
.aff ul{margin:0; padding-left:1.2em}
.aff li{color:var(--warn)}

.crumbs{font-size:13px; color:var(--muted); margin:0 0 6px}
.crumbs a{color:var(--muted)}
.cta-row{margin:22px 0}
.pill{display:inline-block; background:var(--accent-soft); color:#115e59; border-radius:999px; padding:4px 12px; font-size:13px; font-weight:600; margin-bottom:8px}

footer.site{border-top:1px solid var(--line); background:#fff; padding:26px 18px; font-size:13px; color:var(--muted)}
footer.site p{margin:.4em 0}
.disclosure{color:var(--muted)}