/* CalcVitals — design system
   Clinical calm: deep teal, soft mint surfaces, one warm coral accent.
   Big precise result figures; the only motion is the count-up. */
:root{
  --teal:#0E7C7B; --teal-deep:#0A5C5B; --teal-dark:#07332F;
  --mint:#E6F4F1; --mint-soft:#F2F8F6;
  --ink:#1C2422; --ink-soft:#2E3B38; --muted:#5E6E6A; --line:#D8E6E2;
  --bg:#F7FAF9; --card:#FFFFFF; --accent:#E76F51; --accent-deep:#C7512F;
  --radius:16px; --shadow:0 6px 24px rgba(7,51,47,.10);
  --serif:Georgia,"Times New Roman",Times,serif;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,"Helvetica Neue",Arial,sans-serif;
  color:var(--ink);background:var(--bg);font-size:17px;line-height:1.55}
a{color:var(--teal-deep);text-decoration:none}
a:hover{text-decoration:underline}
img,svg{max-width:100%}

/* ---------- header ---------- */
.site-header{background:#fff;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.header-in{max-width:1180px;margin:0 auto;padding:10px 18px;display:flex;align-items:center;gap:16px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:11px;color:var(--teal-dark);font-weight:700;font-size:1.28rem;letter-spacing:-.02em;white-space:nowrap}
.brand:hover{text-decoration:none}
.brand img{width:42px;height:42px;display:block}
.main-nav{display:flex;gap:4px;flex-wrap:wrap;margin-left:auto}
.main-nav a{color:var(--ink);padding:8px 12px;border-radius:10px;font-size:.98rem}
.main-nav a:hover{background:var(--mint);text-decoration:none;color:var(--teal-deep)}
.unit-wrap{display:flex;align-items:center;gap:7px;margin-left:6px;color:var(--muted);font-size:.9rem;font-weight:600}
.unit-wrap select{border:1.5px solid var(--line);border-radius:999px;padding:7px 12px;font-size:.95rem;font-weight:700;color:var(--teal-deep);background:#fff;cursor:pointer;outline:none}
.unit-wrap select:focus{border-color:var(--teal)}

/* ---------- layout ---------- */
.wrap{max-width:1180px;margin:0 auto;padding:0 18px 10px}
.ad-slot{display:flex;align-items:center;justify-content:center;background:#fff;border:1px dashed var(--line);
  border-radius:12px;color:var(--muted);font-size:.85rem;min-height:110px;margin:22px 0}

/* ---------- hero / home ---------- */
.hero{position:relative;overflow:hidden;background:linear-gradient(130deg,var(--teal-dark),var(--teal-deep) 48%,var(--teal) 85%);color:#fff;border-radius:0 0 26px 26px;margin:0 -18px;padding:44px 34px 38px}
.hero h1{margin:0 0 10px;font-family:var(--serif);font-weight:600;font-size:2.25rem;line-height:1.16;letter-spacing:-.01em}
.hero p{margin:0 0 22px;color:#CDEAE4;font-size:1.07rem;max-width:680px}
.search-row{display:flex;max-width:560px;background:#fff;border-radius:14px;padding:6px;box-shadow:var(--shadow)}
.search-row input{flex:1;border:0;outline:0;font-size:1.05rem;padding:10px 12px;color:var(--ink);min-width:0;width:100%}
.cat-block{padding:28px 0 4px}
.cat-block h2{font-size:1.45rem;margin:0 0 16px;color:var(--teal-dark);letter-spacing:-.01em}
.tool-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:16px}
.tool-card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 18px;display:block;color:var(--ink);box-shadow:0 2px 10px rgba(7,51,47,.05);transition:transform .12s ease,box-shadow .12s ease}
.tool-card:hover{text-decoration:none;transform:translateY(-2px);box-shadow:var(--shadow);border-color:var(--teal)}
.tool-card .icon{font-size:1.7rem;line-height:1;display:block;margin-bottom:10px}
.tool-card h3{margin:0 0 5px;font-size:1.08rem;color:var(--teal-dark)}
.tool-card p{margin:0;color:var(--muted);font-size:.94rem}

/* ---------- tool pages ---------- */
.crumbs{font-size:.9rem;color:var(--muted);padding:18px 0 0}
.crumbs a{color:var(--muted)}
main h1{font-family:var(--serif);font-weight:600;font-size:1.95rem;margin:10px 0 8px;color:var(--teal-dark);letter-spacing:-.01em;line-height:1.22}
.answer-first{background:var(--mint);border:1px solid var(--line);border-left:4px solid var(--accent);
  border-radius:12px;padding:15px 19px;margin:0 0 20px;font-size:1.03rem;color:var(--ink-soft);max-width:860px}
.calc-card{background:var(--card);border:1px solid var(--line);border-radius:20px;box-shadow:var(--shadow);padding:24px;max-width:860px}
.field{margin-bottom:15px}
.field label{display:block;font-weight:600;margin-bottom:6px;font-size:.97rem}
.field input,.field select{width:100%;padding:14px;font-size:1.08rem;border:1.5px solid var(--line);border-radius:12px;background:#fff;color:var(--ink);outline:none}
.field input:focus,.field select:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(14,124,123,.18)}
.with-unit{display:flex;gap:10px}
.with-unit input{flex:1;min-width:0}
.with-unit .unit-sel,.with-unit select.unit-sel{width:auto;flex:0 0 auto;padding:14px 10px;font-weight:600}
.with-unit .suffix{display:flex;align-items:center;color:var(--muted);font-size:.95rem;white-space:nowrap}
.ftin-row{display:flex;gap:10px;margin-top:10px}
.ftin-row input{flex:1}
.calc-btn{display:inline-block;background:var(--teal);color:#fff;border:0;border-radius:12px;padding:15px 26px;
  font-size:1.1rem;font-weight:800;cursor:pointer;width:100%;margin-top:4px}
.calc-btn:hover{background:var(--teal-deep)}
.embed-note{color:var(--muted);font-size:.9rem;margin:14px 0 0}

/* result panel: deep teal, coral rule, serif figure */
.result{display:none;margin-top:20px;background:linear-gradient(150deg,#0d6d6c,var(--teal-deep) 55%,var(--teal-dark));
  border:1px solid var(--teal-dark);border-top:3px solid var(--accent);border-radius:14px;padding:20px 22px;color:#D3ECE7}
.result.show{display:block}
.result-big{display:flex;align-items:baseline;gap:12px;flex-wrap:wrap}
.result-value{font-family:var(--serif);font-size:2.5rem;font-weight:600;color:#fff;line-height:1.15;font-variant-numeric:tabular-nums}
.result-label{font-size:.92rem;letter-spacing:.06em;text-transform:uppercase;color:#9ADCD2;font-weight:700}
.result-rows{width:100%;border-collapse:collapse;margin-top:12px}
.result-rows th{text-align:left;font-weight:500;color:#BFE3DB;padding:6px 8px 6px 0;border-bottom:1px solid rgba(255,255,255,.13);font-size:.97rem}
.result-rows td{text-align:right;color:#fff;font-weight:600;padding:6px 0 6px 8px;border-bottom:1px solid rgba(255,255,255,.13);font-variant-numeric:tabular-nums;font-size:.97rem}
.result-rows tr:last-child th,.result-rows tr:last-child td{border-bottom:0}
.result-note{margin:12px 0 0;color:#BFE3DB;font-size:.95rem}
.result-note:empty{display:none}

/* ---------- content ---------- */
.expl{max-width:860px;padding:6px 0 4px}
.expl h2{font-size:1.4rem;color:var(--teal-dark);margin:24px 0 8px;letter-spacing:-.01em}
.expl p{margin:0 0 12px}
.method{background:#fff;border:1px solid var(--line);border-left:4px solid var(--teal);border-radius:12px;padding:16px 20px;margin:20px 0 6px}
.method h3{font-size:1.12rem;color:var(--teal-dark);margin:0 0 8px}
.method p{margin:0}
.disclaimer{border:1px solid #F0D9CF;background:#FDF3EF;border-radius:12px;padding:13px 18px;margin:18px 0 4px;font-size:.9rem;color:var(--ink-soft)}
.faq{max-width:860px}
.faq h2{font-size:1.3rem;color:var(--teal-dark);margin:24px 0 12px}
.faq details{background:#fff;border:1px solid var(--line);border-radius:12px;padding:13px 18px;margin-bottom:10px}
.faq summary{cursor:pointer;font-weight:600;color:var(--teal-dark)}
.faq details p{margin:8px 0 2px}
.related{padding:8px 0 30px}
.related h2{font-size:1.3rem;color:var(--teal-dark);margin:18px 0 14px}
article.page{max-width:820px;padding-bottom:16px}
article.page h1{margin-top:22px}
article.page h2{font-size:1.25rem;color:var(--teal-dark);margin:22px 0 6px}
.embed-list li{margin-bottom:7px}

/* ---------- embed ---------- */
.embed-box{max-width:860px;margin:26px 0}
.embed-box h2{font-size:1.3rem;color:var(--teal-dark);margin:0 0 8px}
.embed-code{display:block;font-family:ui-monospace,Consolas,Menlo,monospace;font-size:.82rem;line-height:1.45;
  color:var(--ink-soft);background:var(--mint-soft);border:1px solid var(--line);border-radius:12px;padding:12px 14px;white-space:pre-wrap;word-break:break-all}
.embed-credit{color:var(--muted);font-size:.92rem}
body.embed-body{background:#fff}
.embed-wrap{max-width:700px;margin:0 auto;padding:16px 14px 10px}
.embed-h1{font-size:1.35rem;margin:2px 0 14px;color:var(--teal-dark);font-family:var(--serif);font-weight:600}
.embed-wrap .calc-card{box-shadow:none}
.embed-wrap .embed-credit{text-align:center;margin:14px 0 6px}

/* ---------- footer ---------- */
.site-footer{background:var(--teal-dark);color:#BFE3DB;margin-top:26px}
.footer-in{max-width:1180px;margin:0 auto;padding:30px 18px;display:grid;grid-template-columns:1.35fr 1fr 1fr 1fr;gap:26px}
.site-footer a{color:#EDF7F4}
.footer-brand{display:flex;align-items:center;gap:10px;color:#fff;font-weight:700;font-size:1.1rem}
.footer-brand img{width:34px;height:34px}
.site-footer h4{color:#fff;margin:0 0 10px;font-size:1rem}
.site-footer ul{list-style:none;margin:0;padding:0}
.site-footer li{margin-bottom:7px;font-size:.95rem}
.footer-note{border-top:1px solid rgba(255,255,255,.14);padding:14px 18px;text-align:center;font-size:.87rem;color:#8FB8B1;max-width:1180px;margin:0 auto}

/* ---------- mobile ---------- */
@media (max-width:720px){
  body{font-size:16px}
  .hero{padding:32px 20px 28px}
  .hero h1{font-size:1.7rem}
  main h1{font-size:1.55rem}
  .calc-card{padding:18px 16px}
  .result-value{font-size:1.9rem}
  .footer-in{grid-template-columns:1fr}
  .main-nav{margin-left:0}
  .header-in{gap:10px}
}