/* QuitWave site. Same palette as the app: deep violet → teal, no red anywhere. */
:root {
  --violet: #5938b8;
  --deep-violet: #211447;
  --teal: #2ec7b8;
  --mint: #85ebc7;
  --ink: #16161c;
  --muted: #5c5c6b;
  --line: rgba(22, 22, 28, 0.1);
  --bg: #ffffff;
  --card: #f6f6f9;
}
@media (prefers-color-scheme: dark) {
  :root {
    --ink: #f2f2f6;
    --muted: #a2a2b3;
    --line: rgba(242, 242, 246, 0.14);
    --bg: #101018;
    --card: #191924;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font: 17px/1.65 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
.wrap { max-width: 720px; margin: 0 auto; padding: 0 22px 88px; }
header.site {
  padding: 26px 0 8px;
  display: flex; align-items: center; gap: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 34px;
}
.mark { width: 34px; height: 34px; border-radius: 10px; flex: none; display: block; }
.mark-name { font-weight: 700; letter-spacing: -0.01em; }
header.site nav { margin-left: auto; display: flex; gap: 18px; font-size: 15px; }
a { color: var(--violet); text-decoration: none; }
@media (prefers-color-scheme: dark) { a { color: var(--mint); } }
a:hover { text-decoration: underline; }
h1 { font-size: 34px; line-height: 1.2; letter-spacing: -0.02em; margin: 0 0 10px; }
h2 { font-size: 21px; margin: 38px 0 10px; letter-spacing: -0.01em; }
h3 { font-size: 17px; margin: 24px 0 6px; }
p, li { color: var(--ink); }
.lede { font-size: 20px; color: var(--muted); margin: 0 0 8px; }
.stamp { color: var(--muted); font-size: 15px; margin: 0 0 6px; }
ul { padding-left: 22px; }
li { margin: 6px 0; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 18px 20px;
  margin: 20px 0;
}
.card p:first-child { margin-top: 0; }
.card p:last-child { margin-bottom: 0; }
.hero {
  background: linear-gradient(135deg, var(--violet), var(--teal));
  color: #fff;
  border-radius: 24px;
  padding: 34px 28px;
  margin: 8px 0 30px;
}
.hero h1, .hero p { color: #fff; }
.hero p:last-child { margin-bottom: 0; }
.grid { display: grid; gap: 14px; grid-template-columns: 1fr 1fr; margin: 22px 0; }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; } }
footer.site {
  border-top: 1px solid var(--line);
  margin-top: 54px; padding-top: 18px;
  color: var(--muted); font-size: 15px;
  display: flex; flex-wrap: wrap; gap: 16px;
}
footer.site .spacer { margin-left: auto; }