:root{
  --bg:#f5f6fb;--surface:#fff;--ink:#141a33;--muted:#5d6482;--line:#e1e4f0;
  --brand:#3b3fd8;--brand-ink:#fff;--brand-soft:#eceeff;--alt:#0f8a6a;--alt-ink:#fff;
  --accent:#ffb020;--err:#c62828;--radius:14px;
  --gA:#0f8a6a;--gB:#3b3fd8;--gC:#b26a00;--gD:#a24b00;--gF:#c62828;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0d1020;--surface:#161a30;--ink:#e9ebf7;--muted:#9aa0c2;--line:#2a2f4d;
    --brand:#8b8ff8;--brand-ink:#0d1020;--brand-soft:#22264a;--alt:#3fd1a6;--alt-ink:#0d1020;
    --err:#ff7b7b;--gA:#3fd1a6;--gB:#8b8ff8;--gC:#f1b257;--gD:#f19657;--gF:#ff7b7b}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif}
a{color:var(--brand)}
.wrap{max-width:980px;margin:0 auto;padding:0 16px}
header.site{background:var(--surface);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:5}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:12px;min-height:58px}
.logo{display:flex;align-items:center;gap:8px;font-weight:800;font-size:20px;color:var(--ink);text-decoration:none;letter-spacing:-.3px}
.logo b{color:var(--brand)}
.logo i{display:inline-grid;place-items:center;width:30px;height:30px;border-radius:9px;background:var(--brand);color:var(--brand-ink);font-style:normal;font-size:15px;font-weight:800}
nav.main{display:flex;gap:2px;flex-wrap:wrap}
nav.main a{color:var(--muted);text-decoration:none;font-size:14px;padding:6px 10px;border-radius:8px}
nav.main a:hover,nav.main a[aria-current]{background:var(--brand-soft);color:var(--ink)}
@media (max-width:640px){nav.main{display:none}}
.crumbs{font-size:13px;color:var(--muted);margin:18px 0 0}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(26px,4.6vw,38px);line-height:1.2;margin:18px 0 8px;letter-spacing:-.6px}
h2{font-size:clamp(20px,3vw,26px);line-height:1.3;margin:38px 0 10px;letter-spacing:-.3px}
h3{font-size:18px;margin:22px 0 6px}
.lede{color:var(--muted);font-size:17px;margin:0 0 16px;max-width:700px}
.tag{display:inline-block;font-size:13px;background:var(--brand-soft);color:var(--brand);padding:3px 10px;border-radius:99px;font-weight:650}
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px}
.calc{display:grid;grid-template-columns:1.25fr .75fr;gap:16px;align-items:start;margin-top:14px}
@media (max-width:800px){.calc{grid-template-columns:1fr}}
.side{position:sticky;top:74px;display:grid;gap:12px}
table{width:100%;border-collapse:collapse;font-size:15px}
th,td{text-align:left;padding:7px 5px;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:12.5px;color:var(--muted);font-weight:650;text-transform:uppercase;letter-spacing:.3px}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
td.n-label{color:var(--muted);width:26px}
input[type=number],select{width:100%;font:inherit;font-size:17px;padding:9px 10px;border:1px solid var(--line);border-radius:10px;background:var(--bg);color:var(--ink);min-width:0}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:1px}
label{display:block;font-weight:650;font-size:14px;margin:0 0 5px}
.hint{font-weight:400;color:var(--muted);font-size:13px}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.grid3{display:grid;grid-template-columns:2fr 1fr;gap:10px;align-items:end;margin-bottom:12px}
.btns{display:flex;gap:8px;margin-top:12px;flex-wrap:wrap}
button{font:inherit;font-weight:650;font-size:14px;border-radius:10px;padding:9px 14px;cursor:pointer;border:1px solid var(--line);background:var(--surface);color:var(--ink)}
button.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
button.del{padding:4px 10px;font-size:18px;line-height:1;color:var(--muted)}
button:focus-visible{outline:2px solid var(--brand)}
.big{background:var(--brand);color:var(--brand-ink);border-radius:12px;padding:14px 16px}
.big.alt{background:var(--alt);color:var(--alt-ink)}
.big small{display:block;font-size:13px;opacity:.9}
.big b{display:block;font-size:clamp(34px,7vw,46px);line-height:1.1;letter-spacing:-1px}
.big span{font-size:13px;opacity:.9}
.g{display:inline-block;font-size:11.5px;font-weight:800;padding:1px 6px;border-radius:6px;color:#fff;margin-left:4px}
.g-A{background:var(--gA)}.g-B{background:var(--gB)}.g-C{background:var(--gC)}.g-D{background:var(--gD)}.g-F{background:var(--gF)}
.err{color:var(--err);font-weight:600;font-size:14px}
.note{font-size:13.5px;color:var(--muted)}
.need{margin-top:12px;background:var(--brand-soft);border-radius:10px;padding:10px 12px;font-size:15px}
.bars{display:flex;height:12px;border-radius:99px;overflow:hidden;background:var(--line);margin-top:12px}
.bars i{display:block}.b1,.k1{background:var(--accent)}.b2,.k2{background:var(--alt)}.b3,.k3{background:var(--brand)}
.legend{font-size:13px;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:6px 0 0}
.legend span{display:inline-block;width:10px;height:10px;border-radius:3px;margin-right:-6px}
.tablewrap{overflow-x:auto;-webkit-overflow-scrolling:touch}
.tools{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:12px}
.tools a{display:block;text-decoration:none;color:var(--ink);background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:14px}
.tools a:hover{border-color:var(--brand)}
.tools strong{display:block;font-size:16px}
.tools span{font-size:13.5px;color:var(--muted)}
.tools .soon{opacity:.6;pointer-events:none}
.prose{max-width:740px}
.prose p,.prose li{font-size:16.5px}
.faq details{background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:12px 14px;margin-bottom:8px}
.faq summary{font-weight:650;cursor:pointer}
.qpt td,.qpt th{padding:5px 6px;font-size:14px}
footer.site{margin-top:56px;border-top:1px solid var(--line);background:var(--surface);font-size:14px;color:var(--muted)}
footer.site .wrap{padding:22px 16px;display:flex;flex-wrap:wrap;gap:8px 18px;justify-content:space-between}
footer.site a{color:var(--muted)}
@media (max-width:520px){
  .card{padding:12px}
  th,td{padding:6px 3px}
  input[type=number],select{font-size:16px;padding:8px}
}
@media print{header.site,footer.site,.btns,button.del{display:none}.side{position:static}}

/* ---- review round 1 additions ---- */
[hidden]{display:none!important}
button{min-height:44px}
button.del{min-height:40px;min-width:40px;padding:4px 10px}
.actions{margin-top:10px}
.actions button{flex:1 1 auto}
details.work{margin-top:10px;font-size:14px}
details.work summary{cursor:pointer;font-weight:650;color:var(--brand)}
details.work p{margin:6px 0 0;font-variant-numeric:tabular-nums}
.source{background:var(--surface);border:1px solid var(--line);border-left:4px solid var(--alt);border-radius:10px;padding:10px 14px;font-size:14.5px;margin:14px 0}
.source.unv{border-left-color:var(--accent)}
.source b{font-weight:700}
.search{position:relative;max-width:560px;margin:6px 0 4px}
.search input{width:100%;font:inherit;font-size:17px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:var(--surface);color:var(--ink)}
.search input:focus{outline:2px solid var(--brand);outline-offset:1px}
input[aria-invalid=true]{border-color:var(--err)}
@media print{
  body{background:#fff;color:#000}
  .actions,.btns,nav.crumbs,.faq,.tools,h2,.prose,.source,.lede,.tag,.qpt,footer,header{display:none!important}
  .calc{display:block}.card{border:1px solid #999}
  .big{background:#fff!important;color:#000!important;border:2px solid #000}
}