:root {
  --teal: #0d9488;
  --teal-dark: #0f766e;
  --teal-deep: #115e59;
  --ink: #0f172a;
  --ink-soft: #334155;
  --mist: #f8fafc;
  --line: #e2e8f0;
  --amber: #b45309;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
  color: var(--ink);
  line-height: 1.65;
  background: #fff;
}
a { color: var(--teal-dark); }
.wrap { max-width: 880px; margin: 0 auto; padding: 0 24px; }

header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0;
}
header.site .logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 18px; color: var(--ink); text-decoration: none; }
header.site nav a { margin-left: 22px; text-decoration: none; font-size: 15px; color: var(--ink-soft); }
header.site nav a:hover { color: var(--teal-dark); }

.hero {
  background: linear-gradient(160deg, var(--ink) 0%, #134e4a 85%);
  color: #fff;
  padding: 84px 0 92px;
}
.hero h1 { font-size: clamp(34px, 5.4vw, 56px); line-height: 1.12; letter-spacing: -0.02em; max-width: 780px; }
.hero h1 em { font-style: normal; color: #5eead4; }
.hero p.sub { margin-top: 22px; font-size: clamp(17px, 2.2vw, 21px); color: #cbd5e1; max-width: 640px; }
.cta-row { margin-top: 36px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; padding: 13px 24px; border-radius: 10px; font-weight: 600;
  text-decoration: none; font-size: 16px;
}
.btn.primary { background: var(--teal); color: #fff; }
.btn.primary:hover { background: #14b8a6; }
.btn.ghost { border: 1px solid #475569; color: #e2e8f0; }
.btn.ghost:hover { border-color: #94a3b8; }
.hero .fine { margin-top: 18px; font-size: 14px; color: #94a3b8; }

section { padding: 72px 0; }
section.alt { background: var(--mist); border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
h2 { font-size: clamp(26px, 3.4vw, 34px); letter-spacing: -0.015em; line-height: 1.2; }
.kicker { text-transform: uppercase; letter-spacing: 0.08em; font-size: 13px; font-weight: 700; color: var(--teal-dark); margin-bottom: 10px; }
section > .wrap > p.lede { margin-top: 14px; font-size: 18px; color: var(--ink-soft); max-width: 700px; }

.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 20px; margin-top: 40px; }
.pillar { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 24px; }
.pillar h3 { font-size: 17px; margin-bottom: 8px; }
.pillar p { font-size: 15px; color: var(--ink-soft); }
.pillar .glyph { font-size: 26px; margin-bottom: 12px; display: block; }

.timeline { margin-top: 44px; border-left: 3px solid var(--teal); padding-left: 28px; display: grid; gap: 30px; }
.tick { position: relative; }
.tick::before {
  content: ""; position: absolute; left: -37px; top: 6px; width: 13px; height: 13px;
  border-radius: 50%; background: var(--teal); border: 3px solid #fff; box-shadow: 0 0 0 1px var(--teal);
}
.tick .t { font-family: ui-monospace, SFMono-Regular, Menlo, monospace; font-size: 13px; font-weight: 700; color: var(--teal-deep); }
.tick h3 { font-size: 18px; margin: 4px 0 6px; }
.tick p { font-size: 15.5px; color: var(--ink-soft); max-width: 660px; }
.tick blockquote {
  margin-top: 10px; background: #fff; border: 1px solid var(--line); border-left: 4px solid var(--teal);
  border-radius: 8px; padding: 14px 16px; font-size: 14.5px; color: var(--ink); max-width: 640px;
}
.tick.human::before { background: var(--amber); box-shadow: 0 0 0 1px var(--amber); }
.tick.human .t { color: var(--amber); }

table.score { margin-top: 36px; width: 100%; border-collapse: collapse; font-size: 15.5px; }
table.score td { padding: 11px 14px; border-bottom: 1px solid var(--line); }
table.score td:last-child { text-align: right; font-weight: 700; }
table.score tr.hot td:last-child { color: var(--teal-dark); }

.trust li { margin: 14px 0 14px 20px; font-size: 16px; color: var(--ink-soft); }
.trust li b { color: var(--ink); }

.closer { background: var(--ink); color: #e2e8f0; text-align: center; }
.closer h2 { color: #fff; }
.closer p { margin-top: 14px; color: #94a3b8; }
.closer .cta-row { justify-content: center; }

footer { padding: 34px 0; font-size: 14px; color: #64748b; }
footer .wrap { display: flex; justify-content: space-between; flex-wrap: wrap; gap: 10px; }
footer a { color: #64748b; }

/* article page */
article { padding: 56px 0 80px; }
article .wrap { max-width: 720px; }
article h1 { font-size: clamp(30px, 4.4vw, 42px); line-height: 1.15; letter-spacing: -0.02em; }
article .byline { margin: 16px 0 36px; color: #64748b; font-size: 15px; }
article h2 { font-size: 26px; margin: 44px 0 12px; }
article h3 { font-size: 20px; margin: 34px 0 10px; }
article p { margin: 14px 0; font-size: 17px; }
article blockquote {
  margin: 18px 0; padding: 16px 20px; background: var(--mist);
  border-left: 4px solid var(--teal); border-radius: 8px; font-size: 16px;
}
article table { width: 100%; border-collapse: collapse; margin: 20px 0; font-size: 15.5px; }
article td, article th { padding: 10px 12px; border-bottom: 1px solid var(--line); text-align: left; }
article td:last-child { font-weight: 600; }
article code { background: var(--mist); border: 1px solid var(--line); border-radius: 5px; padding: 1px 6px; font-size: 0.9em; }
article hr { border: none; border-top: 1px solid var(--line); margin: 40px 0; }
article .fine { color: #64748b; font-size: 15px; }