:root {
  --bg: #f5f5f7;
  --card: #ffffff;
  --text: #1d1d1f;
  --muted: #6e6e73;
  --accent: #0a84ff;
  --line: #d2d2d7;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #000000;
    --card: #1c1c1e;
    --text: #f5f5f7;
    --muted: #98989d;
    --accent: #409cff;
    --line: #38383a;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 17px/1.55 -apple-system, BlinkMacSystemFont, "SF Pro Text", "Helvetica Neue", Arial, sans-serif;
  -webkit-text-size-adjust: 100%;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.wrap {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 16px;
}

header.site {
  padding: 20px 0;
}

header.site .wrap {
  display: flex;
  align-items: center;
  gap: 12px;
}

header.site img {
  width: 36px;
  height: 36px;
  border-radius: 8px;
}

header.site a.brand {
  color: var(--text);
  font-weight: 600;
}

header.site nav {
  margin-left: auto;
  display: flex;
  gap: 18px;
  font-size: 15px;
}

main { padding: 8px 0 48px; }

.card {
  background: var(--card);
  border-radius: 18px;
  padding: 28px 24px;
}

h1 { font-size: 32px; line-height: 1.2; margin: 0 0 6px; }
h2 { font-size: 21px; margin: 32px 0 8px; }
h3 { font-size: 17px; margin: 22px 0 4px; }
p, ul { margin: 0 0 14px; }
ul { padding-left: 22px; }
li { margin-bottom: 6px; }

.muted { color: var(--muted); }
.small { font-size: 14px; }

/* Home */
.hero {
  text-align: center;
  padding: 48px 0 32px;
}

.hero img {
  width: 128px;
  height: 128px;
  border-radius: 28px;
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.hero h1 { margin-top: 24px; font-size: 40px; }

.hero p {
  font-size: 20px;
  color: var(--muted);
  max-width: 520px;
  margin: 8px auto 0;
}

.links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}

.button {
  display: inline-block;
  background: var(--card);
  color: var(--text);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 22px;
  font-weight: 500;
}

.button:hover { text-decoration: none; border-color: var(--accent); }

footer.site {
  border-top: 1px solid var(--line);
  padding: 20px 0 32px;
  font-size: 14px;
  color: var(--muted);
}

footer.site .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 18px;
}

@media (max-width: 480px) {
  h1 { font-size: 28px; }
  .hero h1 { font-size: 32px; }
  .card { padding: 22px 18px; }
  header.site nav { gap: 14px; }
}