:root{
  --bg:#f6f7f9; --surface:#ffffff; --surface-2:#f0f2f5; --text:#14181f; --muted:#5b6472;
  --border:#dde1e7; --brand:#0f6e5f; --brand-ink:#ffffff; --brand-soft:#e3f2ef;
  --warn-bg:#fff6e0; --warn-ink:#7a5200; --bad-bg:#fdecec; --bad-ink:#9b1c1c;
  --weekend:#f3f4f7;
  --radius:14px; --shadow:0 1px 2px rgba(16,24,40,.05),0 4px 16px rgba(16,24,40,.06);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#0f1216; --surface:#171b21; --surface-2:#1e232b; --text:#e8ebf0; --muted:#9aa3b2;
    --border:#2a303a; --brand:#3fb8a2; --brand-ink:#08201c; --brand-soft:#16302b;
    --warn-bg:#2e2510; --warn-ink:#f2c46b; --bad-bg:#331717; --bad-ink:#f4a3a3;
    --weekend:#1b2027; --shadow:none;
  }
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--text);
  font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif}
a{color:var(--brand)}
.wrap{max-width:880px;margin:0 auto;padding:0 16px}
.qa-banner{background:#1d4ed8;color:#fff;font-size:13px;text-align:center;padding:6px 16px}

/* Header */
header.site{border-bottom:1px solid var(--border);background:var(--surface)}
header.site .wrap{display:flex;align-items:center;gap:10px;height:60px}
.logo{display:flex;align-items:center;gap:8px;font-weight:700;text-decoration:none;color:var(--text);white-space:nowrap}
.logo svg{color:var(--brand)}
nav.site{margin-left:auto;display:flex;gap:16px;font-size:14px}
nav.site a{color:var(--muted);text-decoration:none;white-space:nowrap}
nav.site a:hover,nav.site a[aria-current="page"]{color:var(--text)}
nav.site a[aria-current="page"]{font-weight:650}
.nav-all{display:none;margin-left:auto;font-size:14px;color:var(--muted);text-decoration:none}
@media (max-width:760px){nav.site{display:none}.nav-all{display:inline}}

/* Hero */
.hero{padding:32px 0 8px}
.crumbs{font-size:13px;color:var(--muted);margin-bottom:8px}
.crumbs a{color:var(--muted)}
h1{font-size:clamp(28px,5vw,40px);line-height:1.15;margin:0 0 10px;letter-spacing:-.02em}
.lead{color:var(--muted);margin:0 0 20px;max-width:660px}

/* Cards & calculator */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.calc{padding:20px}
.calc + .calc{margin-top:16px}
.calc h2{font-size:18px;margin:0 0 14px}
.tabs{display:inline-flex;flex-wrap:wrap;background:var(--surface-2);border-radius:10px;padding:4px;margin-bottom:18px;gap:2px}
.tabs button{border:0;background:transparent;color:var(--muted);font:inherit;font-weight:600;font-size:14px;
  padding:8px 14px;border-radius:7px;cursor:pointer}
.tabs button[aria-selected="true"]{background:var(--surface);color:var(--text);box-shadow:var(--shadow)}

.grid{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
.grid.two{grid-template-columns:repeat(2,1fr)}
.grid.four{grid-template-columns:repeat(4,1fr)}
@media (max-width:600px){
  .grid,.grid.four{grid-template-columns:1fr 1fr}
  .grid .full-sm{grid-column:1/-1}
}
.grid > *{min-width:0}
label.f{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted);min-width:0}
input[type=time],input[type=number],input[type=text],input[type=email],input[type=date],input[type=month],select{
  font:inherit;font-size:17px;color:var(--text);background:var(--surface);
  border:1px solid var(--border);border-radius:10px;padding:10px 12px;width:100%;min-width:0;max-width:100%;min-height:46px}
select{appearance:auto}
input:focus,select:focus{outline:2px solid var(--brand);outline-offset:1px;border-color:transparent}
input.invalid{border-color:var(--bad-ink);background:var(--bad-bg)}
.hint{font-size:13px;color:var(--muted);margin:8px 0 0}
.opts{display:flex;flex-wrap:wrap;gap:12px 24px;margin-top:16px;font-size:14px}
.check{display:flex;align-items:center;gap:8px;cursor:pointer;font-size:14px}
.check input{width:18px;height:18px;accent-color:var(--brand)}
.rate{display:flex;align-items:center;gap:8px}
.rate input{width:110px;min-height:38px;font-size:15px;padding:6px 10px}
.days{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:6px}

/* Result */
.result{margin-top:20px;border-radius:12px;background:var(--brand-soft);padding:18px}
.result .big{font-size:clamp(30px,6vw,40px);font-weight:750;letter-spacing:-.02em;line-height:1.1}
.result .sub{color:var(--muted);font-size:14px;margin-top:4px}
.kpis{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:14px}
@media (max-width:600px){.kpis{grid-template-columns:1fr 1fr}}
.kpi{background:var(--surface);border-radius:10px;padding:10px 12px}
.kpi b{display:block;font-size:18px;font-variant-numeric:tabular-nums}
.kpi span{font-size:12px;color:var(--muted)}
.notes{margin-top:12px;display:flex;flex-direction:column;gap:8px}
.notes:empty{display:none}
.note{font-size:14px;border-radius:10px;padding:10px 12px}
.note.warn{background:var(--warn-bg);color:var(--warn-ink)}
.note.bad{background:var(--bad-bg);color:var(--bad-ink)}
.note.info{background:var(--surface);color:var(--muted)}

/* Dynamic rows (hours calculator) */
.rows{display:flex;flex-direction:column;gap:8px}
.row{display:grid;grid-template-columns:72px 1fr 44px;gap:8px;align-items:center}
.row select{font-weight:700;text-align:center}
.icon-btn{border:1px solid var(--border);background:var(--surface);color:var(--muted);border-radius:10px;
  min-height:46px;font-size:20px;line-height:1;cursor:pointer}
.icon-btn:hover{color:var(--bad-ink)}

/* Week table */
table.week{width:100%;border-collapse:collapse;font-size:15px}
table.week th{font-size:12px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted);text-align:left;padding:6px;font-weight:600}
table.week td{padding:5px 6px;border-top:1px solid var(--border);vertical-align:middle}
table.week td.day{font-weight:650;white-space:nowrap}
table.week input{min-height:40px;font-size:15px;padding:6px 8px}
table.week input[type=number]{width:76px}
table.week td.sum{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap;font-weight:600}
table.week td.sum small{display:block;color:var(--muted);font-weight:400}
table.week tr.weekend td{background:var(--weekend)}
.flag{color:var(--bad-ink);font-size:12px;display:block}
@media (max-width:600px){
  table.week thead{display:none}
  table.week tr{display:grid;grid-template-columns:1fr 1fr 76px;gap:6px;padding:10px 0;border-top:1px solid var(--border)}
  table.week td{border:0;padding:0}
  table.week td.day{grid-column:1/-1}
  table.week td.sum{grid-column:1/-1;text-align:left}
}
.weekfoot{display:flex;flex-wrap:wrap;align-items:end;gap:14px;margin-top:14px}
.weekfoot label.f{width:170px}

/* Buttons */
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}
.btn{font:inherit;font-weight:650;font-size:15px;border-radius:10px;padding:10px 16px;cursor:pointer;border:1px solid var(--border);
  background:var(--surface);color:var(--text);min-height:44px}
.btn.primary{background:var(--brand);color:var(--brand-ink);border-color:var(--brand)}
.btn.small{min-height:38px;padding:6px 12px;font-size:14px}
.btn:hover{filter:brightness(.97)}

/* Waitlist CTA */
.cta{margin:28px 0;padding:22px;display:grid;grid-template-columns:1.3fr 1fr;gap:18px;align-items:center}
@media (max-width:700px){.cta{grid-template-columns:1fr}}
.cta h2{margin:0 0 6px;font-size:21px}
.cta p{margin:0;color:var(--muted);font-size:15px}
.cta form{display:flex;gap:8px;flex-wrap:wrap}
.cta form input{flex:1 1 200px}
.cta .ok{font-size:14px;color:var(--brand);margin-top:8px}

/* Article */
article{padding:8px 0 24px}
article h2{font-size:24px;margin:36px 0 10px;letter-spacing:-.01em}
article h3{font-size:18px;margin:22px 0 6px}
.tbl{width:100%;border-collapse:collapse;margin:12px 0;font-size:15px;background:var(--surface);border-radius:10px;overflow:hidden;border:1px solid var(--border)}
.tbl th,.tbl td{padding:9px 12px;text-align:left;border-bottom:1px solid var(--border)}
.tbl th{background:var(--surface-2);font-size:13px;color:var(--muted)}
.tbl.compact td,.tbl.compact th{padding:5px 10px;font-variant-numeric:tabular-nums}
.tbl-wrap{overflow-x:auto}
details{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:0 16px;margin:8px 0}
summary{cursor:pointer;font-weight:650;padding:14px 0;list-style:none}
summary::-webkit-details-marker{display:none}
summary::after{content:"+";float:right;color:var(--muted);font-weight:400}
details[open] summary::after{content:"–"}
details p{margin:0 0 14px}
.disclaimer{font-size:13px;color:var(--muted);border-top:1px solid var(--border);padding-top:14px;margin-top:28px}

/* Related & hub */
.related{padding:4px 0 40px}
.related h2{font-size:20px;margin:0 0 12px}
.link-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:12px}
.link-card{display:block;padding:16px;text-decoration:none;color:var(--text)}
.link-card:hover{border-color:var(--brand)}
.link-card b{display:block;margin-bottom:4px}
.link-card span{font-size:14px;color:var(--muted)}

footer.site{border-top:1px solid var(--border);padding:24px 0;font-size:14px;color:var(--muted)}
footer.site .cols{display:flex;flex-wrap:wrap;gap:8px 18px}
footer.site .legal{margin-top:14px;display:flex;flex-wrap:wrap;gap:16px}
footer.site a{color:var(--muted)}

/* Print */
.print-only{display:none}
@media print{
  @page{margin:14mm}
  body{background:#fff;color:#000;font-size:11pt}
  .qa-banner,header.site,nav,.tabs,.actions,.cta,article,.related,footer.site,.lead,.crumbs,.no-print,.notes{display:none !important}
  .card{border:0;box-shadow:none}
  .calc{padding:0}
  .print-only{display:block}
  .result{background:#fff;border:1px solid #999}
  input,select{border:0 !important;padding:0 !important;min-height:0 !important;font-size:11pt !important;background:transparent !important}
  table.week tr.weekend td{background:#eee !important;-webkit-print-color-adjust:exact;print-color-adjust:exact}
  table.week td{padding:2px 4px}
  .sig{display:flex;gap:40px;margin-top:40px}
  .sig div{flex:1;border-top:1px solid #000;padding-top:6px;font-size:9pt}
}