/* APC Science - shared stylesheet
   Clean scientific / modern theme. Built fresh.
   Design tokens first, components after. */

:root {
  /* Meridian identity */
  --navy: #0B1D2D;
  --navy-deep: #06141F;
  --teal: #0F766E;
  --teal-light: #14B8A6;
  --teal-pale: #E6F2F0;
  --ink: #1A2433;
  --slate: #5B6770;
  --line: #E6E9EE;
  --gray: #E5E7EB;
  --bg: #FAFAF8;
  --bg-soft: #F3F5F4;
  --bg-softer: #EEF2F1;
  --white: #FFFFFF;
  --radius: 16px;
  --shadow: 0 1px 3px rgba(11, 29, 45, .05), 0 14px 32px -22px rgba(11, 29, 45, .22);
  --shadow-lg: 0 24px 60px -20px rgba(11, 29, 45, .30);
  --maxw: 1140px;
  --font: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }

h1, h2, h3, h4 {
  color: var(--navy);
  line-height: 1.16;
  letter-spacing: -0.02em;
  margin: 0 0 .5em;
  font-weight: 700;
}
h1 { font-size: clamp(2.1rem, 4.6vw, 3.5rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.35rem); }
h3 { font-size: 1.22rem; }
p { margin: 0 0 1.1em; color: var(--slate); }
a { color: var(--teal); text-decoration: none; transition: color .15s ease; }
a:hover { color: var(--navy); }

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

.eyebrow {
  display: inline-block;
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--teal);
  margin-bottom: 1rem;
}

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  background: rgba(250, 250, 248, .86);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--line);
}
.nav { display: flex; align-items: center; justify-content: space-between; height: 72px; }
.brand { display: inline-flex; align-items: center; color: var(--navy); text-decoration: none; }
.brand:hover { color: var(--navy); }

/* ---------- Wordmark logo (Meridian) ---------- */
.logo { font-weight: 800; letter-spacing: -.022em; color: var(--navy); white-space: nowrap; font-size: 1.2rem; line-height: 1; }
.logo .sci { font-weight: 300; letter-spacing: -.01em; }
.logo .dot { display: inline-block; width: .2em; height: .72em; vertical-align: baseline; margin: 0 .01em 0 .03em; }
.logo .dot circle { fill: var(--teal); }
.logo.rev { color: #fff; }
.logo.rev .sci { color: #e9f1f0; }

.nav-links { display: flex; align-items: center; gap: 6px; }
.nav-links a { color: var(--ink); font-weight: 600; font-size: .95rem; padding: 9px 14px; border-radius: 8px; transition: background .15s ease, color .15s ease; }
.nav-links a:hover { background: var(--bg-soft); color: var(--navy); }
.nav-links a.active { color: var(--teal); }
.nav-links a.btn { color: #fff; }

.nav-toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav-toggle span { display: block; width: 22px; height: 2px; background: var(--navy); margin: 4px 0; border-radius: 2px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--navy); color: #fff; font-weight: 600; font-size: .96rem;
  padding: 12px 22px; border-radius: 999px; border: 1px solid var(--navy);
  cursor: pointer; transition: transform .15s ease, box-shadow .15s ease, background .15s ease;
}
.btn:hover { background: var(--navy-deep); color: #fff; transform: translateY(-1px); box-shadow: var(--shadow); }
.btn.btn-teal { background: var(--teal); border-color: var(--teal); }
.btn.btn-teal:hover { background: var(--teal-light); border-color: var(--teal-light); color: #fff; }
.btn.btn-ghost { background: transparent; color: var(--navy); border-color: var(--line); }
.btn.btn-ghost:hover { background: var(--bg-soft); color: var(--navy); border-color: var(--slate); }

/* ---------- Sections ---------- */
section { padding: 84px 0; }
.section-soft { background: var(--bg-soft); }
.section-navy { background: linear-gradient(150deg, var(--navy-deep), var(--navy)); color: #cfe0ee; }
.section-navy h1, .section-navy h2, .section-navy h3 { color: #fff; }
.section-navy p { color: #b7c8da; }
.section-navy .eyebrow { color: var(--teal-light); }

.section-head { max-width: 720px; margin-bottom: 52px; }
.section-head.center { margin-left: auto; margin-right: auto; text-align: center; }
.lead { font-size: 1.18rem; color: var(--slate); }

/* ---------- Page header (inner pages) ---------- */
.page-head {
  background:
    radial-gradient(900px 420px at 85% -20%, rgba(13,148,136,.10), transparent 60%),
    var(--bg-soft);
  border-bottom: 1px solid var(--line);
  padding: 64px 0 56px;
}
.crumb { font-size: .86rem; color: var(--slate); margin-bottom: 18px; }
.crumb a { color: var(--slate); }
.crumb a:hover { color: var(--teal); }
.crumb span { color: var(--teal); }

/* ---------- Hero ---------- */
.hero {
  position: relative; overflow: hidden;
  background:
    radial-gradient(1100px 500px at 78% -10%, rgba(13,148,136,.10), transparent 60%),
    radial-gradient(900px 500px at 0% 110%, rgba(10,37,64,.06), transparent 55%),
    var(--bg);
  padding: 96px 0 88px;
}
.hero-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 56px; align-items: center; }
.hero h1 { margin-bottom: .35em; }
.hero .lead { margin-bottom: 1.8em; }
.hero-cta { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-panel {
  background: linear-gradient(155deg, var(--navy-deep), var(--navy));
  border-radius: 20px; padding: 34px; color: #cfe0ee;
  box-shadow: var(--shadow-lg); position: relative; overflow: hidden;
}
.hero-panel:before { content: ""; position: absolute; inset: 0; background: radial-gradient(420px 220px at 90% 0%, rgba(20,184,166,.28), transparent 60%); }
.hero-panel h3 { color: #fff; position: relative; }
.hero-panel ul { position: relative; list-style: none; padding: 0; margin: 14px 0 0; }
.hero-panel li { position: relative; padding: 12px 0 12px 28px; border-top: 1px solid rgba(255,255,255,.10); color: #cfe0ee; font-size: .98rem; }
.hero-panel li:first-child { border-top: 0; }
.hero-panel li b { color: #fff; }
.hero-panel li:before { content: ""; position: absolute; left: 0; top: 18px; width: 9px; height: 9px; border-radius: 50%; background: var(--teal-light); box-shadow: 0 0 0 4px rgba(20,184,166,.18); }

/* ---------- Cards / grids ---------- */
.grid { display: grid; gap: 26px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

.card {
  background: var(--white); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 30px; box-shadow: var(--shadow);
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); border-color: #d2dceb; }
.card .ico { width: 46px; height: 46px; border-radius: 11px; background: var(--teal-pale); color: var(--teal); display: grid; place-items: center; margin-bottom: 18px; }
.card .ico svg { width: 24px; height: 24px; }
.card h3 { margin-bottom: .45em; }
.card p { margin-bottom: 0; font-size: .98rem; }
.card .num-badge { font-weight: 800; color: var(--teal); font-size: .9rem; letter-spacing: .08em; }

/* feature row */
.feature { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.feature + .feature { margin-top: 80px; }
.feature.reverse .feature-media { order: 2; }
.feature-media { background: linear-gradient(155deg, var(--bg-softer), var(--white)); border: 1px solid var(--line); border-radius: 18px; padding: 34px; box-shadow: var(--shadow); }
.feature-media h4 { font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; color: var(--teal); margin-bottom: 16px; }
.tag-row { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 6px; }
.tag { font-size: .83rem; font-weight: 600; color: var(--navy); background: var(--white); border: 1px solid var(--line); padding: 7px 13px; border-radius: 999px; }
.feature-media .tag { background: var(--teal-pale); border-color: #cdeae6; color: #0b7268; }

ul.check { list-style: none; padding: 0; margin: 18px 0 0; }
ul.check li { position: relative; padding: 9px 0 9px 30px; color: var(--ink); font-size: 1rem; border-top: 1px solid var(--line); }
ul.check li:first-child { border-top: 0; }
ul.check li:before { content: ""; position: absolute; left: 2px; top: 15px; width: 16px; height: 9px; border-left: 2.5px solid var(--teal); border-bottom: 2.5px solid var(--teal); transform: rotate(-45deg); }

/* stats */
.stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.stat { text-align: center; }
.stat .num { font-size: clamp(2rem, 4vw, 2.8rem); font-weight: 800; color: #fff; letter-spacing: -.03em; line-height: 1; }
.stat .lbl { color: #9fb4c9; font-size: .92rem; margin-top: 8px; }

/* process steps */
.steps { counter-reset: step; display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { position: relative; padding-top: 18px; border-top: 2px solid var(--line); }
.step:before { counter-increment: step; content: "0" counter(step); font-weight: 800; color: var(--teal); font-size: 1.1rem; letter-spacing: .06em; }
.step h4 { margin: 10px 0 6px; color: var(--navy); font-size: 1.1rem; }
.step p { font-size: .95rem; margin: 0; }

/* ---------- CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .btn { margin-top: 8px; }

/* ---------- Founder ---------- */
.founder { display: grid; grid-template-columns: .82fr 1.18fr; gap: 48px; align-items: start; }
.founder-card { background: var(--white); border: 1px solid var(--line); border-radius: 18px; padding: 30px; box-shadow: var(--shadow); position: sticky; top: 96px; }
.avatar { width: 92px; height: 92px; border-radius: 20px; background: linear-gradient(135deg, var(--navy), var(--teal)); color: #fff; display: grid; place-items: center; font-size: 1.9rem; font-weight: 800; letter-spacing: -.03em; margin-bottom: 18px; }
.founder-photo { width: 100%; aspect-ratio: 4 / 5; max-height: 300px; object-fit: cover; object-position: center 20%; border-radius: 16px; margin-bottom: 16px; background: var(--bg-softer); display: block; }
/* Don't let the sticky card exceed the viewport, or its lower content (the CTA) gets pinned off-screen */
@media (min-width: 901px) { .founder-card { max-height: calc(100vh - 112px); overflow: auto; } }
.founder-card .role { color: var(--teal); font-weight: 600; font-size: .95rem; margin: 0; }
.founder-card .name { font-size: 1.5rem; margin: 2px 0 4px; }
.founder-meta { list-style: none; padding: 0; margin: 20px 0 0; }
.founder-meta li { display: flex; flex-direction: column; gap: 2px; padding: 12px 0; border-top: 1px solid var(--line); font-size: .94rem; color: var(--slate); }
.founder-meta li:first-child { border-top: 0; }
.founder-meta b { color: var(--navy); font-weight: 700; font-size: .82rem; letter-spacing: .06em; text-transform: uppercase; }

/* ---------- Founder: photo-forward hero ---------- */
.founder-head { padding-bottom: 50px; }
.founder-head__grid { display: grid; grid-template-columns: 1.12fr .88fr; gap: 52px; align-items: center; margin-top: 6px; }
.founder-head__text .lead { max-width: 52ch; margin-top: 16px; }
.founder-head__media { margin: 0; }
.founder-head__media img { width: 100%; aspect-ratio: 4 / 5; max-height: 440px; object-fit: cover; object-position: center 16%; border-radius: 18px; box-shadow: var(--shadow-lg); background: var(--bg-softer); display: block; }
@media (max-width: 860px) {
  .founder-head__grid { grid-template-columns: 1fr; gap: 26px; }
  .founder-head__media { order: -1; }
  .founder-head__media img { max-width: 280px; max-height: 340px; }
}

/* Facts strip: a hairline spec card straddling hero and story */
.fact-strip { padding: 0; }
.fact-strip .wrap { transform: translateY(-32px); margin-bottom: -16px; }
.fact-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: 14px; overflow: hidden; box-shadow: var(--shadow); list-style: none; padding: 0; margin: 0; }
.fact-grid li { background: var(--white); padding: 20px 24px; }
.fact-grid b { display: block; color: var(--navy); font-size: .72rem; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; margin-bottom: 6px; }
.fact-grid span, .fact-grid a { color: var(--slate); font-size: .96rem; }
.fact-grid a:hover { color: var(--teal); }
@media (max-width: 720px) { .fact-grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 460px) { .fact-grid { grid-template-columns: 1fr; } }

/* Story: centered editorial column (shares the centre axis with the lab band + CTA below) */
.founder-story { max-width: 760px; margin-left: auto; margin-right: auto; }

.prose p { color: var(--slate); }
.prose p.first { font-size: 1.16rem; color: var(--ink); }
.pull { margin: 30px 0; padding: 6px 0 6px 26px; border-left: 3px solid var(--teal); font-size: 1.35rem; line-height: 1.4; color: var(--navy); font-weight: 600; letter-spacing: -.01em; }
.pull cite { display: block; margin-top: 14px; font-size: .8rem; font-style: normal; letter-spacing: .12em; text-transform: uppercase; color: var(--slate); font-weight: 600; }

.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { position: relative; padding: 0 0 30px 30px; border-left: 2px solid var(--line); margin-left: 4px; }
.timeline li:last-child { padding-bottom: 0; }
.timeline li:before { content: ""; position: absolute; left: -9px; top: 3px; width: 14px; height: 14px; border-radius: 50%; background: #fff; border: 3px solid var(--teal); }
.timeline .yr { font-weight: 700; color: var(--teal); font-size: .9rem; }
.timeline h4 { margin: 3px 0 6px; color: var(--navy); font-size: 1.12rem; }
.timeline p { margin: 0; font-size: .97rem; }

/* trust row */
.trust-row { display: flex; flex-wrap: wrap; gap: 14px 40px; align-items: center; }
.trust-row span { font-weight: 700; color: var(--slate); font-size: 1.15rem; letter-spacing: -.01em; }

/* ---------- Contact ---------- */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.field { margin-bottom: 18px; }
.field label { display: block; font-weight: 600; color: var(--navy); font-size: .92rem; margin-bottom: 7px; }
.field input, .field textarea, .field select {
  width: 100%; padding: 12px 14px; border: 1px solid var(--line); border-radius: 10px;
  font-family: inherit; font-size: 1rem; color: var(--ink); background: var(--white);
  transition: border-color .15s ease, box-shadow .15s ease;
}
.field input:focus, .field textarea:focus, .field select:focus { outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(13,148,136,.14); }
.field textarea { min-height: 140px; resize: vertical; }
.contact-aside { background: var(--bg-soft); border: 1px solid var(--line); border-radius: 16px; padding: 30px; }
.contact-aside .row { display: flex; gap: 13px; align-items: flex-start; padding: 16px 0; border-top: 1px solid var(--line); }
.contact-aside .row:first-of-type { border-top: 0; }
.contact-aside .row .ico { color: var(--teal); margin-top: 2px; flex: 0 0 auto; }
.contact-aside .k { font-size: .78rem; letter-spacing: .1em; text-transform: uppercase; color: var(--slate); font-weight: 600; display: block; margin-bottom: 2px; }
.contact-aside .v { font-weight: 600; color: var(--navy); font-size: 1.05rem; }
.note { font-size: .86rem; color: var(--slate); }
.form-ok { display: none; margin-top: 16px; padding: 14px 16px; border: 1px solid var(--teal); background: var(--teal-pale); border-radius: 10px; color: #0b7268; font-size: .96rem; }
.form-ok.show { display: block; }

/* ---------- Footer ---------- */
.site-footer { background: var(--navy-deep); color: #9fb4c9; padding: 56px 0 30px; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 40px; padding-bottom: 36px; border-bottom: 1px solid rgba(255,255,255,.10); }
.site-footer .brand { color: #fff; margin-bottom: 14px; }
.site-footer .brand .sub { color: #9fb4c9; }
.site-footer p { color: #9fb4c9; font-size: .95rem; }
.footer-col h4 { color: #fff; font-size: .82rem; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 14px; }
.footer-col a { display: block; color: #9fb4c9; padding: 6px 0; font-size: .95rem; }
.footer-col a:hover { color: var(--teal-light); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; padding-top: 24px; font-size: .88rem; color: #7f96ad; flex-wrap: wrap; gap: 10px; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-grid, .feature, .feature.reverse .feature-media, .founder, .contact-grid, .footer-grid { grid-template-columns: 1fr; }
  .feature.reverse .feature-media, .feature-media { order: 0; }
  .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .stats, .steps { grid-template-columns: repeat(2, 1fr); }
  .founder-card { position: static; }
  section { padding: 64px 0; }
  .hero { padding: 64px 0 56px; }
  .nav-links {
    position: absolute; top: 72px; left: 0; right: 0;
    flex-direction: column; align-items: stretch;
    background: #fff; border-bottom: 1px solid var(--line);
    padding: 12px 24px 18px; gap: 2px; display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; }
  .nav-links a.btn { justify-content: center; margin-top: 6px; }
  .nav-toggle { display: block; }
}
@media (max-width: 560px) {
  .grid-2, .grid-3, .grid-4, .stats, .steps { grid-template-columns: 1fr; }
  .brand .sub { display: none; }
  .eyebrow { letter-spacing: .1em; font-size: .72rem; }
}

/* ---------- Split list (When-to-call / Engagements) ---------- */
.split-list { border-top: 1px solid var(--line); }
.split-row { display: grid; grid-template-columns: .82fr 1.18fr; gap: 28px; padding: 22px 0; border-bottom: 1px solid var(--line); align-items: start; }
.split-row .k { font-weight: 700; color: var(--navy); font-size: 1.06rem; letter-spacing: -.01em; margin: 0; }
.split-row .v { color: var(--slate); font-size: 1rem; margin: 0; }

/* ---------- Founder credibility strip (home) ---------- */
.founder-strip { display: grid; grid-template-columns: .4fr 1fr; gap: 44px; align-items: center; }
.founder-strip__photo { width: 100%; max-width: 260px; aspect-ratio: 4 / 5; object-fit: cover; object-position: center 18%; border-radius: 16px; box-shadow: var(--shadow); background: var(--bg-softer); }
.founder-strip .lead { margin-bottom: 1.1em; }

@media (max-width: 760px) { .founder-strip { grid-template-columns: 1fr; gap: 26px; } }
@media (max-width: 700px) { .split-row { grid-template-columns: 1fr; gap: 6px; padding: 18px 0; } }

/* ---------- Engagement deliverables ---------- */
.split-row .deliv { display: block; margin-top: 8px; font-size: .9rem; color: var(--slate); }
.split-row .deliv b { color: var(--navy); font-weight: 700; }

/* ---------- Accessibility: skip link + focus states ---------- */
.skip-link { position: absolute; left: -9999px; top: 0; z-index: 100; background: var(--navy); color: #fff; padding: 10px 16px; border-radius: 0 0 8px 0; font-weight: 600; font-size: .9rem; }
.skip-link:focus { left: 0; color: #fff; }
a:focus-visible, button:focus-visible, .btn:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, .nav-toggle:focus-visible { outline: 2px solid var(--teal); outline-offset: 2px; border-radius: 4px; }

/* ---------- Media band (photography), natural aspect, no crop ---------- */
.media-band { max-width: 960px; margin: 0 auto; }
.media-band img { width: 100%; height: auto; border-radius: 18px; box-shadow: var(--shadow); display: block; }
.media-cap { margin-top: 12px; font-size: .82rem; color: var(--slate); text-align: center; }
.media-cap b { color: var(--navy); font-weight: 600; }