/* TideDose landing — monochrome system mirrored from the app theme:
   #F1F1F3 canvas, white 24-radius cards, black pills, gray caps labels. */

:root {
  --canvas: #f1f1f3;
  --card: #ffffff;
  --ink: #0a0a0a;
  --muted: #6e6e73;
  --line: #e3e3e6;
  --charcoal: #2c2c2e;
  --radius: 24px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  background: var(--canvas);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
  line-height: 1.5;
}

main { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* ---- nav ---- */
.nav {
  max-width: 1040px; margin: 0 auto; padding: 20px 24px;
  display: flex; justify-content: space-between; align-items: center;
}
.wordmark { font-weight: 800; font-size: 20px; letter-spacing: -0.02em; }
.wordmark-sm { font-size: 16px; }

/* ---- pills ---- */
.pill {
  display: inline-block; background: var(--ink); color: #fff; border: none;
  border-radius: 999px; padding: 14px 26px; font-size: 16px; font-weight: 600;
  cursor: pointer; text-decoration: none; text-align: center;
}
.pill:hover { background: var(--charcoal); }
.pill-sm { padding: 9px 18px; font-size: 14px; }

/* ---- hero ---- */
.hero {
  display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 48px;
  align-items: center; padding: 64px 0 80px;
}
h1 { font-size: 52px; line-height: 1.06; letter-spacing: -0.03em; font-weight: 800; }
.dek { margin-top: 20px; font-size: 19px; color: var(--muted); max-width: 44ch; }

/* ---- email capture ---- */
.capture { display: flex; gap: 10px; margin-top: 28px; max-width: 460px; }
.capture input[type="email"] {
  flex: 1; min-width: 0; border: 1px solid var(--line); background: var(--card);
  border-radius: 999px; padding: 14px 20px; font-size: 16px; color: var(--ink); outline: none;
}
.capture input[type="email"]:focus { border-color: var(--ink); }
.hp { display: none; }
.form-note { margin-top: 10px; font-size: 13px; color: var(--muted); }
.capture-done { margin-top: 28px; font-size: 17px; font-weight: 600; }

/* ---- grade card ---- */
.grade-card {
  background: var(--card); border-radius: var(--radius); padding: 28px;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.08);
}
.gc-top { display: flex; gap: 18px; align-items: center; }
.gc-badge {
  width: 84px; height: 84px; flex: none; background: var(--ink); color: #fff;
  border-radius: 20px; display: flex; align-items: center; justify-content: center;
  font-size: 38px; font-weight: 800;
}
.gc-id { display: flex; flex-direction: column; gap: 2px; }
.gc-vendor { font-weight: 700; font-size: 18px; letter-spacing: 0.04em; }
.gc-compound { color: var(--muted); font-size: 14px; }
.gc-reveal {
  margin-top: 6px; font-size: 11px; text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--muted);
}
.gc-stats {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
  margin-top: 24px; padding-top: 20px; border-top: 1px solid var(--line);
}
.gc-stats > div { display: flex; flex-direction: column; gap: 2px; }
.gc-num { font-weight: 700; font-size: 17px; }
.gc-label { font-size: 11px; color: var(--muted); }
.gc-foot {
  margin-top: 20px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: 12px; text-transform: uppercase; letter-spacing: 0.07em; color: var(--muted);
}

/* ---- manifesto ---- */
.manifesto { padding: 72px 0; border-top: 1px solid var(--line); }
.m-line { font-size: 32px; font-weight: 800; letter-spacing: -0.02em; line-height: 1.25; }
.m-pivot { margin-top: 28px; font-size: 19px; color: var(--muted); max-width: 62ch; }

/* ---- pillars ---- */
.pillars { padding: 24px 0 72px; }
.kicker {
  display: block; font-size: 12px; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.09em; color: var(--muted); margin-bottom: 20px;
}
.pillar-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.card {
  background: var(--card); border-radius: var(--radius); padding: 28px;
}
.card h3 { font-size: 19px; letter-spacing: -0.01em; margin-bottom: 10px; }
.card p { color: var(--muted); font-size: 15px; }

/* ---- faq ---- */
.faq { padding: 24px 0 72px; }
.faq details {
  background: var(--card); border-radius: 16px; padding: 18px 22px; margin-bottom: 10px;
}
.faq summary { font-weight: 600; font-size: 16px; cursor: pointer; list-style: none; }
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; float: right; color: var(--muted); }
.faq details[open] summary::after { content: "–"; }
.faq details p { margin-top: 10px; color: var(--muted); font-size: 15px; max-width: 70ch; }

/* ---- close ---- */
.close {
  background: var(--ink); color: #fff; border-radius: var(--radius);
  padding: 64px 32px; text-align: center; margin-bottom: 48px;
}
.close h2 { font-size: 34px; letter-spacing: -0.02em; line-height: 1.15; }
.close .capture { margin: 28px auto 0; justify-content: center; }
.close .capture input[type="email"] { border-color: #3a3a3c; background: #1c1c1e; color: #fff; }
.close .pill { background: #fff; color: var(--ink); }
.close .pill:hover { background: #e5e5ea; }
.close .form-note { color: #98989d; }
.close .capture-done { color: #fff; }

/* ---- footer ---- */
.footer {
  max-width: 1040px; margin: 0 auto; padding: 0 24px 56px;
  color: var(--muted); font-size: 13px;
}
.footer p { margin-top: 8px; max-width: 60ch; }

/* ---- mobile ---- */
@media (max-width: 860px) {
  .hero { grid-template-columns: 1fr; padding: 32px 0 56px; gap: 36px; }
  h1 { font-size: 38px; }
  .m-line { font-size: 24px; }
  .pillar-grid { grid-template-columns: 1fr; }
  .capture { flex-direction: column; }
  .capture .pill { width: 100%; }
  .close { padding: 48px 20px; }
  .close h2 { font-size: 26px; }
  .gc-stats { grid-template-columns: repeat(2, 1fr); row-gap: 16px; }
}