:root {
  --ink: #0f1e2e;
  --ink-soft: #3d4f63;
  --muted: #6b7b8c;
  --bg: #ffffff;
  --bg-alt: #f3f6f9;
  --line: #dde4eb;
  --navy: #12324f;
  --accent: #c8423a;
  --accent-dark: #a5342d;
  --teal: #1f7a7a;
  --radius: 14px;
  --max: 1120px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; display: block; }
a { color: var(--teal); }
a:hover { color: var(--navy); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 20px; }

/* Header */
.site-header {
  position: sticky; top: 0; z-index: 10;
  background: rgba(255,255,255,0.96);
  border-bottom: 1px solid var(--line);
  backdrop-filter: saturate(150%) blur(6px);
}
.site-header .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; color: var(--navy); font-weight: 700; font-size: 1.2rem; letter-spacing: -0.01em; }
.brand svg { width: 34px; height: 34px; }
.nav { display: flex; gap: 22px; align-items: center; }
.nav a { text-decoration: none; color: var(--ink-soft); font-size: 0.95rem; }
.nav a:hover { color: var(--navy); }
.nav .btn { color: #fff; }
.nav-toggle { display: none; background: none; border: 1px solid var(--line); border-radius: 8px; padding: 6px 10px; font-size: 0.95rem; color: var(--navy); cursor: pointer; }

/* Buttons */
.btn {
  display: inline-block; padding: 12px 22px; border-radius: 999px;
  background: var(--accent); color: #fff; text-decoration: none; font-weight: 600; font-size: 0.98rem;
  border: 2px solid var(--accent); transition: background .15s, border-color .15s;
}
.btn:hover { background: var(--accent-dark); border-color: var(--accent-dark); color: #fff; }
.btn.ghost { background: transparent; color: var(--navy); border-color: var(--navy); }
.btn.ghost:hover { background: var(--navy); color: #fff; }
.nav .btn { padding: 8px 16px; font-size: 0.9rem; }

/* Hero */
.hero { background: linear-gradient(180deg, #f3f6f9 0%, #ffffff 100%); padding: 84px 0 72px; }
.hero .wrap { display: grid; grid-template-columns: 1.15fr 0.85fr; gap: 48px; align-items: center; }
.eyebrow { text-transform: uppercase; letter-spacing: 0.12em; font-size: 0.78rem; font-weight: 700; color: var(--teal); margin: 0 0 14px; }
h1 { font-size: clamp(2.1rem, 4.6vw, 3.3rem); line-height: 1.12; letter-spacing: -0.02em; margin: 0 0 20px; color: var(--navy); }
.lede { font-size: 1.18rem; color: var(--ink-soft); margin: 0 0 30px; max-width: 34em; }
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; }
.hero-art { background: #fff; border: 1px solid var(--line); border-radius: 22px; padding: 34px; box-shadow: 0 18px 50px rgba(18,50,79,0.08); }
.hero-art ul { list-style: none; padding: 0; margin: 22px 0 0; }
.hero-art li { display: flex; gap: 12px; align-items: flex-start; padding: 10px 0; border-top: 1px solid var(--line); color: var(--ink-soft); font-size: 0.98rem; }
.hero-art li:first-child { border-top: 0; }
.tick { flex: 0 0 22px; height: 22px; border-radius: 50%; background: #e6f2f2; color: var(--teal); display: grid; place-items: center; font-size: 0.8rem; font-weight: 700; }

/* Sections */
section { padding: 80px 0; }
section.alt { background: var(--bg-alt); }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); line-height: 1.2; letter-spacing: -0.015em; margin: 0 0 14px; color: var(--navy); }
.section-intro { color: var(--ink-soft); max-width: 44em; margin: 0 0 40px; font-size: 1.08rem; }
h3 { font-size: 1.15rem; margin: 0 0 8px; color: var(--navy); }

/* Stats */
.stats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.stat { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 28px; }
.stat .num { font-size: 2.4rem; font-weight: 800; color: var(--accent); letter-spacing: -0.02em; line-height: 1; margin-bottom: 10px; }
.stat p { margin: 0; color: var(--ink-soft); }
.source { font-size: 0.82rem; color: var(--muted); margin-top: 18px; }

/* Steps */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; counter-reset: step; }
.step { position: relative; padding: 26px 22px; border: 1px solid var(--line); border-radius: var(--radius); background: #fff; }
.step::before { counter-increment: step; content: counter(step); display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--navy); color: #fff; font-weight: 700; margin-bottom: 14px; }
.step p { margin: 0; color: var(--ink-soft); font-size: 0.97rem; }

/* Audience cards */
.cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.card { background: #fff; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; display: flex; flex-direction: column; }
.card .tag { font-size: 0.78rem; font-weight: 700; letter-spacing: 0.1em; text-transform: uppercase; color: var(--accent); margin-bottom: 10px; }
.card ul { padding-left: 18px; margin: 10px 0 0; color: var(--ink-soft); }
.card li { margin-bottom: 8px; }

/* Evidence */
.trials { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.trial { border-left: 4px solid var(--teal); background: #fff; padding: 20px 22px; border-radius: 0 var(--radius) var(--radius) 0; border-top: 1px solid var(--line); border-right: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trial p { margin: 0 0 10px; color: var(--ink-soft); font-size: 0.97rem; }
.trial .cite { font-size: 0.85rem; color: var(--muted); margin: 0; }
.note { margin-top: 26px; font-size: 0.92rem; color: var(--muted); max-width: 52em; }

/* Contact */
.contact-box { background: var(--navy); color: #fff; border-radius: 22px; padding: 48px; display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 36px; align-items: center; }
.contact-box h2 { color: #fff; }
.contact-box p { color: #cfdbe7; margin: 0 0 12px; }
.contact-list { list-style: none; padding: 0; margin: 0; }
.contact-list li { padding: 12px 0; border-top: 1px solid rgba(255,255,255,0.15); }
.contact-list li:first-child { border-top: 0; }
.contact-list a { color: #fff; font-weight: 600; text-decoration: none; }
.contact-list a:hover { text-decoration: underline; }
.contact-list span { display: block; font-size: 0.85rem; color: #9fb4c8; }
.phi-note { font-size: 0.85rem; color: #9fb4c8; margin-top: 18px; }

/* Footer */
.site-footer { background: #0b1826; color: #9fb0c1; padding: 44px 0 36px; font-size: 0.88rem; }
.site-footer .wrap { display: grid; gap: 18px; }
.site-footer .row { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 14px; }
.site-footer a { color: #cfdbe7; text-decoration: none; }
.site-footer a:hover { text-decoration: underline; }
.site-footer .links { display: flex; gap: 18px; flex-wrap: wrap; }
.disclaimer { border-top: 1px solid rgba(255,255,255,0.1); padding-top: 18px; line-height: 1.55; }

/* Legal page */
.legal { padding: 64px 0 80px; }
.legal .wrap { max-width: 800px; }
.legal h1 { font-size: 2.2rem; }
.legal h2 { font-size: 1.3rem; margin-top: 34px; }
.legal p, .legal li { color: var(--ink-soft); }

/* Responsive */
@media (max-width: 960px) {
  .hero .wrap, .contact-box { grid-template-columns: 1fr; }
  .steps { grid-template-columns: repeat(2, 1fr); }
  .cards, .trials, .stats { grid-template-columns: 1fr; }
}
@media (max-width: 760px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; background: #fff; flex-direction: column; align-items: flex-start; padding: 16px 20px 22px; border-bottom: 1px solid var(--line); gap: 14px; }
  .nav.open { display: flex; }
  .nav-toggle { display: block; }
  .hero { padding: 56px 0 48px; }
  section { padding: 60px 0; }
  .steps { grid-template-columns: 1fr; }
  .contact-box { padding: 32px 24px; }
}