:root {
  --bg: #F6F8F8; --card: #FFFFFF; --ink: #17231F; --ink-2: #4E5E5A; --ink-3: #7E8C88;
  --line: #DDE5E2; --teal: #00796B; --teal-vivid: #00C7B5;
  --food: #1E7F4E; --act: #C8104A; --sleep: #4A45B5; --meta: #00796B;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101615; --card: #1A2220; --ink: #ECF2F0; --ink-2: #B3C0BC; --ink-3: #7F8E8A;
    --line: #2A3532; --teal: #40D4C2; --teal-vivid: #40D4C2;
    --food: #4ED18B; --act: #FF4F8B; --sleep: #8E85FF; --meta: #40D4C2;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 17px/1.6 -apple-system, "Helvetica Neue", Arial, sans-serif; }
a { color: var(--teal); }
.top { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; max-width: 880px; margin: 0 auto; padding: 20px 20px 0; }
.brand { font-weight: 800; font-size: 1.15rem; text-decoration: none; color: var(--ink); }
.beta { color: var(--teal-vivid); font-weight: 800; }
.top nav a { margin-left: 16px; font-size: 0.95rem; text-decoration: none; color: var(--ink-2); }
main { max-width: 880px; margin: 0 auto; padding: 24px 20px 64px; }
.eyebrow { font-size: 0.75rem; letter-spacing: 0.14em; text-transform: uppercase; color: var(--teal); font-weight: 700; margin: 24px 0 8px; }
h1 { font-size: clamp(2rem, 6vw, 3rem); line-height: 1.1; margin: 0 0 16px; letter-spacing: -0.02em; }
h2 { font-size: 1.25rem; margin: 32px 0 10px; }
.lede { font-size: 1.15rem; color: var(--ink-2); max-width: 62ch; }
.pillars { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; margin-top: 32px; }
.pillar { background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 18px; border-top: 5px solid var(--teal); }
.pillar h2 { margin: 0 0 6px; font-size: 1.05rem; }
.pillar p { margin: 0; color: var(--ink-2); font-size: 0.95rem; }
.pillar.food { border-top-color: var(--food); } .pillar.act { border-top-color: var(--act); }
.pillar.sleep { border-top-color: var(--sleep); } .pillar.meta { border-top-color: var(--meta); }
.promise ul { padding-left: 20px; max-width: 70ch; }
.promise li { margin-bottom: 8px; }
.cta { margin-top: 32px; padding: 20px; background: var(--card); border: 1px solid var(--line); border-radius: 16px; }
.cta p { margin: 0 0 8px; }
.muted { color: var(--ink-3); }
article { max-width: 70ch; }
article h2 { font-size: 1.15rem; margin-top: 28px; }
article p, article li { color: var(--ink-2); }
article .updated { color: var(--ink-3); font-size: 0.9rem; }
footer { border-top: 1px solid var(--line); max-width: 880px; margin: 0 auto; padding: 16px 20px 40px; font-size: 0.85rem; color: var(--ink-3); }