:root {
  --bg: #ffffff;
  --fg: #111111;
  --muted: #666666;
  --line: #e2e2e2;
  --up: #157a3f;
  --down: #b3261e;
  --mono: ui-monospace, "SF Mono", Menlo, monospace;
  --sans: -apple-system, system-ui, "Segoe UI", Roboto, sans-serif;
}

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

body {
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--fg); }

/* ---- top bar ---- */
.topbar {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 0 1.25rem;
  height: 52px;
  border-bottom: 2px solid var(--fg);
  max-width: 1100px;
  margin: 0 auto;
}
.topbar .brand { font-weight: 700; font-size: 17px; letter-spacing: 0.02em; text-decoration: none; }
.topbar .spacer { flex: 1; }
.topbar .nav { color: var(--muted); text-decoration: none; font-size: 14px; }
.topbar .nav:hover { color: var(--fg); }
.topbar .cta-sm {
  font-size: 14px;
  text-decoration: none;
  border: 1px solid var(--fg);
  padding: 4px 12px;
  background: var(--fg);
  color: var(--bg);
}
.topbar .cta-sm:hover { background: #333; }

/* ---- layout ---- */
main { max-width: 1100px; margin: 0 auto; padding: 0 1.25rem; }
section { padding: 3.5rem 0; border-bottom: 1px solid var(--line); }
h2 { font-size: 14px; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); margin-bottom: 1.5rem; }

/* ---- hero ---- */
.hero { padding: 4.5rem 0 4rem; }
.hero h1 { font-size: clamp(28px, 5vw, 44px); line-height: 1.15; letter-spacing: -0.02em; max-width: 18ch; }
.hero .lede { font-size: 18px; color: #333; max-width: 60ch; margin-top: 1.25rem; }
.hero .free {
  display: inline-block;
  margin-top: 1.25rem;
  font-family: var(--mono);
  font-size: 13px;
  border: 1px solid var(--fg);
  padding: 2px 8px;
}
.cta-row { display: flex; gap: 0.75rem; flex-wrap: wrap; margin-top: 1.75rem; }
.cta {
  display: inline-block;
  text-decoration: none;
  background: var(--fg);
  color: var(--bg);
  border: 1px solid var(--fg);
  padding: 10px 20px;
  font-size: 15px;
  font-weight: 600;
}
.cta:hover { background: #333; }
.cta.secondary { background: var(--bg); color: var(--fg); font-weight: 400; }
.cta.secondary:hover { background: #f0f0f0; }

/* ---- feature grid ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card { background: var(--bg); padding: 1.5rem; }
.card h3 { font-size: 16px; margin-bottom: 0.5rem; }
.card p { font-size: 14px; color: #333; }
@media (max-width: 820px) { .grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 540px) { .grid { grid-template-columns: 1fr; } }

/* ---- data note ---- */
.data p { max-width: 70ch; font-size: 16px; color: #333; }

/* ---- closing cta ---- */
.cta-block { text-align: center; border-bottom: none; }
.cta-block h2 { color: var(--fg); text-transform: none; letter-spacing: -0.01em; font-size: 26px; margin-bottom: 1.25rem; }

/* ---- legal pages (terms / privacy) ---- */
.legal { padding: 2.5rem 0 1rem; }
.legal h1 { font-size: 28px; letter-spacing: -0.01em; margin-bottom: 0.25rem; }
.legal .updated { color: var(--muted); font-size: 13px; margin-bottom: 2rem; }
.legal h2 { text-transform: none; letter-spacing: 0; color: var(--fg); font-size: 18px; margin: 2rem 0 0.5rem; }
.legal p, .legal li { font-size: 15px; color: #333; max-width: 72ch; }
.legal ul { margin: 0.5rem 0 0.75rem 1.25rem; }
.legal li { margin-bottom: 0.35rem; }
.legal .callout { border: 1px solid var(--fg); padding: 0.85rem 1rem; margin: 1.25rem 0; max-width: 72ch; }

/* ---- footer ---- */
footer { max-width: 1100px; margin: 0 auto; padding: 2rem 1.25rem 3rem; border-top: 2px solid var(--fg); }
.disclaimer { font-size: 12px; color: var(--muted); max-width: 80ch; }
.foot-links { font-size: 13px; margin-top: 1rem; }
.foot-links a { color: var(--muted); }
.foot-links a:hover { color: var(--fg); }
.muted { color: var(--muted); }