:root {
  --ink: #111111;
  --paper: #ffffff;
  --muted: #6b6b6b;
  --faint: #999999;
  --line: #e2e2e2;
  --accent: #b5762c;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.wrap {
  max-width: 640px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- nav ---------- */
nav.top {
  padding: 32px 0;
  border-bottom: 1px solid var(--line);
}
nav.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  color: var(--ink);
}
.brand img {
  width: 22px;
  height: 22px;
  border-radius: 5px;
  display: block;
}
.brand span {
  font-weight: 600;
  letter-spacing: 0.01em;
  font-size: 15px;
}
nav.top a.back {
  color: var(--muted);
  text-decoration: none;
  font-size: 14px;
}
nav.top a.back:hover { color: var(--ink); }

/* ---------- hero ---------- */
.hero {
  padding: 88px 0 64px;
  text-align: center;
  border-bottom: 1px solid var(--line);
}
.kicker {
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--faint);
  margin: 0 0 28px;
}
.mark {
  width: 56px;
  height: 56px;
  border-radius: 13px;
  margin: 0 auto 28px;
  display: block;
}
h1.wordmark {
  font-size: 40px;
  font-weight: 700;
  letter-spacing: -0.01em;
  margin: 0 0 16px;
}
.tagline {
  font-size: 18px;
  line-height: 1.5;
  color: var(--muted);
  margin: 0 auto 36px;
  max-width: 380px;
}
.cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--ink);
  font-weight: 600;
  font-size: 15px;
  text-decoration: none;
  border-bottom: 1px solid var(--ink);
  padding-bottom: 2px;
}
.cta:hover { color: var(--accent); border-color: var(--accent); }
.cta.disabled {
  color: var(--faint);
  border-color: var(--line);
  cursor: default;
}
.cta.disabled:hover { color: var(--faint); border-color: var(--line); }

/* ---------- features ---------- */
.features {
  padding: 8px 0;
}
.feature {
  display: flex;
  justify-content: space-between;
  gap: 32px;
  padding: 28px 0;
  border-bottom: 1px solid var(--line);
}
.feature:last-child { border-bottom: none; }
.feature h3 {
  flex: 0 0 160px;
  font-size: 15px;
  font-weight: 600;
  margin: 0;
}
.feature p {
  flex: 1;
  font-size: 15px;
  line-height: 1.6;
  color: var(--muted);
  margin: 0;
}
@media (max-width: 560px) {
  .feature { flex-direction: column; gap: 8px; }
  .feature h3 { flex: none; }
}

/* ---------- footer ---------- */
footer {
  border-top: 1px solid var(--line);
  padding: 24px 0 48px;
}
footer .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
footer nav {
  display: flex;
  gap: 20px;
}
footer a {
  color: var(--muted);
  text-decoration: none;
  font-size: 13px;
}
footer a:hover { color: var(--ink); }
footer .copyright {
  color: var(--faint);
  font-size: 13px;
}

/* ---------- legal pages (privacy / support) ---------- */
main.doc {
  padding: 56px 0 96px;
}
main.doc h1 {
  font-size: 28px;
  font-weight: 700;
  margin: 0 0 8px;
}
main.doc .updated {
  color: var(--faint);
  font-size: 13px;
  margin: 0 0 40px;
}
main.doc h2 {
  font-size: 16px;
  font-weight: 600;
  margin: 40px 0 12px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
}
main.doc h2:first-of-type {
  padding-top: 0;
  border-top: none;
}
main.doc p, main.doc li {
  font-size: 15px;
  line-height: 1.7;
  color: #333333;
}
main.doc ul { padding-left: 20px; }
main.doc a { color: var(--ink); text-decoration: underline; }
main.doc a:hover { color: var(--accent); }

main.doc .callout {
  margin: 24px 0;
  padding: 20px 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--ink);
}
main.doc .callout p {
  margin: 0;
  color: var(--ink);
}