:root {
  --ink: #16242b;
  --ink-soft: #44565d;
  --clinical: #1f6f6b;
  --clinical-dark: #15524f;
  --calm: #e8f0ef;
  --paper: #fbfcfc;
  --signal: #c8553d;
  --signal-dark: #a8432f;
  --line: #d7e0df;
  --maxw: 1080px;
  --r: 14px;
  --serif: "Fraunces", Georgia, "Times New Roman", serif;
  --sans: "Inter", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, monospace;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--sans);
  color: var(--ink);
  background: var(--paper);
  line-height: 1.65;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; display: block; }

a { color: var(--clinical-dark); text-decoration: none; }
a:hover { color: var(--signal-dark); }

h1, h2, h3, h4 {
  font-family: var(--serif);
  font-weight: 600;
  line-height: 1.12;
  color: var(--ink);
  letter-spacing: -0.01em;
}

.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--ink);
  color: #fff;
  padding: 10px 16px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; color: #fff; }

/* ---------- Top bar ---------- */
.topbar {
  background: var(--ink);
  color: #cfe0dd;
  font-family: var(--mono);
  font-size: 13px;
  border-bottom: 1px solid #243640;
}
.topbar .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  padding-top: 9px;
  padding-bottom: 9px;
  flex-wrap: wrap;
}
.topbar a { color: #eaf2f0; }
.topbar .tb-phones { display: flex; gap: 18px; flex-wrap: wrap; }
.topbar .tb-phones strong { color: #fff; font-weight: 600; }
.topbar .tb-hours { opacity: 0.85; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(251, 252, 252, 0.92);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding-top: 14px;
  padding-bottom: 14px;
}
.brand {
  font-family: var(--serif);
  font-weight: 600;
  font-size: 26px;
  letter-spacing: 0.01em;
  color: var(--ink);
  display: inline-flex;
  align-items: center;
  gap: 10px;
}
.brand .mark {
  width: 30px; height: 30px;
  border-radius: 8px;
  background: var(--clinical);
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 16px;
  font-weight: 700;
}
.brand small {
  display: block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 400;
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 8px 12px;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--ink);
  cursor: pointer;
}
.main-nav ul {
  list-style: none;
  display: flex;
  gap: 4px;
  margin: 0;
  padding: 0;
}
.main-nav a {
  display: block;
  padding: 9px 13px;
  border-radius: 9px;
  font-size: 14px;
  font-weight: 500;
  color: var(--ink-soft);
  letter-spacing: 0.01em;
}
.main-nav a:hover { background: var(--calm); color: var(--ink); }
.main-nav a[aria-current="page"] { color: var(--clinical-dark); background: var(--calm); font-weight: 600; }
.main-nav .has-sub { position: relative; }
.main-nav .sub {
  position: absolute;
  top: 100%;
  left: 0;
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  box-shadow: 0 12px 30px rgba(22, 36, 43, 0.12);
  min-width: 200px;
  padding: 6px;
  display: none;
}
.main-nav .has-sub:hover .sub,
.main-nav .has-sub:focus-within .sub { display: block; }
.main-nav .sub a { padding: 9px 12px; }

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 500px at 85% -10%, rgba(31, 111, 107, 0.10), transparent 60%),
    linear-gradient(180deg, var(--calm), var(--paper));
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}
.hero .wrap {
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 48px;
  align-items: center;
  padding-top: 64px;
  padding-bottom: 64px;
}
.eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clinical);
  margin: 0 0 14px;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 62px);
  margin: 0 0 18px;
}
.hero h1 em { font-style: italic; color: var(--clinical); }
.hero p.lead {
  font-size: 19px;
  color: var(--ink-soft);
  max-width: 46ch;
  margin: 0 0 28px;
}
.hero-portrait {
  border-radius: var(--r);
  overflow: hidden;
  border: 1px solid var(--line);
  box-shadow: 0 18px 40px rgba(22, 36, 43, 0.14);
  background: #dfe8e7;
}
.hero-portrait img { width: 100%; object-fit: cover; aspect-ratio: 3/4; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 22px;
  border-radius: 11px;
  font-weight: 600;
  font-size: 16px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .12s ease, background .15s ease, box-shadow .15s ease;
}
.btn:focus-visible { outline: 3px solid var(--clinical); outline-offset: 2px; }
.btn-primary { background: var(--signal); color: #fff; }
.btn-primary:hover { background: var(--signal-dark); color: #fff; transform: translateY(-1px); }
.btn-ghost { background: #fff; color: var(--ink); border-color: var(--line); }
.btn-ghost:hover { background: var(--calm); color: var(--ink); }
.btn-row { display: flex; gap: 14px; flex-wrap: wrap; }

/* ---------- Sections ---------- */
.section { padding: 72px 0; }
.section.tint { background: var(--calm); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.section h2 { font-size: clamp(28px, 4vw, 40px); margin: 0 0 8px; }
.section .sub {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--clinical);
  margin: 0 0 22px;
}
.section .intro { color: var(--ink-soft); max-width: 60ch; margin: 0 0 36px; }

/* ---------- Cards ---------- */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.card {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 26px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: 0 16px 34px rgba(22,36,43,.10); border-color: #c3d0cf; }
.card .num {
  font-family: var(--mono);
  font-size: 13px;
  color: var(--clinical);
  letter-spacing: 0.1em;
}
.card h3 { font-size: 21px; margin: 8px 0 10px; }
.card p { margin: 0; color: var(--ink-soft); font-size: 15.5px; }
.card a.more { display: inline-block; margin-top: 14px; font-weight: 600; font-size: 14px; }

/* service list */
.service {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 26px 0;
  border-top: 1px solid var(--line);
}
.service:first-of-type { border-top: none; }
.service .ic {
  width: 56px; height: 56px;
  border-radius: 12px;
  background: var(--calm);
  color: var(--clinical);
  display: grid; place-items: center;
  font-family: var(--serif); font-size: 24px; font-weight: 600;
  flex: none;
}
.service h3 { font-size: 22px; margin: 2px 0 8px; }
.service p { margin: 0; color: var(--ink-soft); }

/* ---------- Article / prose ---------- */
.prose { max-width: 70ch; }
.prose h2 { font-size: 28px; margin-top: 40px; }
.prose h3 { font-size: 21px; margin-top: 30px; color: var(--clinical-dark); }
.prose p { color: var(--ink-soft); }
.prose ul { color: var(--ink-soft); padding-left: 22px; }
.prose li { margin: 4px 0; }
.prose .meta { font-family: var(--mono); font-size: 12px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-soft); }

/* ---------- Tables (clinical data) ---------- */
.tablecard {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: var(--r);
  padding: 8px 8px 4px;
  overflow-x: auto;
}
table.data {
  width: 100%;
  border-collapse: collapse;
  font-size: 14.5px;
  min-width: 520px;
}
table.data th, table.data td {
  text-align: left;
  padding: 13px 14px;
  border-bottom: 1px solid var(--line);
  vertical-align: top;
}
table.data thead th {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--clinical-dark);
  background: var(--calm);
}
table.data tbody tr:last-child td { border-bottom: none; }
table.data td:first-child { font-weight: 600; color: var(--ink); }

/* ---------- Test form ---------- */
.test-q {
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px 22px;
  margin: 0 0 14px;
}
.test-q .q { font-weight: 600; margin: 0 0 12px; }
.test-q label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 7px 10px;
  border-radius: 8px;
  cursor: pointer;
  color: var(--ink-soft);
  font-size: 15px;
}
.test-q label:hover { background: var(--calm); }
.test-q input { accent-color: var(--clinical); width: 16px; height: 16px; }
.test-result {
  margin-top: 18px;
  padding: 20px 22px;
  border-radius: 12px;
  border: 1px solid var(--clinical);
  background: var(--calm);
  font-size: 17px;
  display: none;
}
.test-result.show { display: block; }
.test-result strong { color: var(--clinical-dark); }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }
.contact-rail {
  background: var(--ink);
  color: #eaf2f0;
  border-radius: var(--r);
  padding: 28px;
  font-family: var(--mono);
}
.contact-rail h3 { color: #fff; font-family: var(--serif); font-size: 22px; margin: 0 0 16px; }
.contact-rail .row { display: flex; justify-content: space-between; gap: 16px; padding: 10px 0; border-top: 1px solid #2b3d46; font-size: 14px; }
.contact-rail .row:first-of-type { border-top: none; }
.contact-rail .row span:first-child { color: #9fb6b2; }
.contact-rail .row span:last-child { color: #fff; text-align: right; }
.contact-rail a { color: #fff; }
.map-note { color: var(--ink-soft); font-size: 15px; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: #aebebb;
  padding: 40px 0;
  margin-top: 0;
}
.site-footer .wrap { display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; align-items: center; }
.site-footer a { color: #eaf2f0; }
.site-footer .f-brand { font-family: var(--serif); color: #fff; font-size: 20px; }
.site-footer .f-meta { font-family: var(--mono); font-size: 12px; }
.site-footer .f-links { display: flex; gap: 16px; flex-wrap: wrap; font-size: 14px; }

:focus-visible { outline: 3px solid var(--clinical); outline-offset: 2px; border-radius: 4px; }

/* ---------- Responsive ---------- */
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; gap: 32px; padding-top: 44px; padding-bottom: 44px; }
  .hero-portrait { max-width: 320px; }
  .cards { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .nav-toggle { display: inline-block; }
  .main-nav {
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--line);
    display: none;
    padding: 10px 0;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; gap: 0; padding: 0 16px; }
  .main-nav a { padding: 12px 10px; }
  .main-nav .sub { position: static; box-shadow: none; border: none; background: var(--calm); margin: 0 0 6px; }
  .section { padding: 52px 0; }
}

@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}