:root {
  --bg: #ffffff;
  --bg-elevated: #f4f8fc;
  --text: #1c2733;
  --text-secondary: #5a6b7a;
  --border: #e1e8ee;
  --accent: #0a84ff;
  --link: #0a6cd4;
  --band-1: #ff3b30;
  --band-2: #ff9500;
  --band-3: #ffcc00;
  --band-4: #34c759;
  --band-5: #0a84ff;
  --band-6: #af52de;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1720;
    --bg-elevated: #172230;
    --text: #eaf1f8;
    --text-secondary: #9fb0bf;
    --border: #263444;
    --accent: #4aa3ff;
    --link: #6cb6ff;
  }
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.6;
}

.rainbow-bar {
  height: 6px;
  width: 100%;
  background: linear-gradient(
    90deg,
    var(--band-1),
    var(--band-2),
    var(--band-3),
    var(--band-4),
    var(--band-5),
    var(--band-6)
  );
}

header.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  max-width: 720px;
  margin: 0 auto;
  padding: 28px 20px 20px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
}

.brand-emoji {
  font-size: 1.4rem;
}

nav.site-nav {
  display: flex;
  gap: 18px;
}

nav.site-nav a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
}

nav.site-nav a:hover,
nav.site-nav a[aria-current="page"] {
  color: var(--accent);
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 20px 60px;
}

h1 {
  font-size: 1.9rem;
  line-height: 1.25;
  margin: 0.4em 0 0.3em;
}

h2 {
  font-size: 1.25rem;
  margin: 1.6em 0 0.5em;
  border-top: 1px solid var(--border);
  padding-top: 1.2em;
}

h2:first-of-type {
  border-top: none;
  padding-top: 0;
}

p,
li {
  color: var(--text);
}

.subtitle {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-top: 0;
}

.updated {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 18px 20px;
  margin: 14px 0;
}

.card h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.button {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  text-decoration: none;
  font-weight: 700;
  padding: 12px 22px;
  border-radius: 999px;
  margin-top: 8px;
}

ul {
  padding-left: 1.3em;
}

footer.site-footer {
  max-width: 720px;
  margin: 0 auto;
  padding: 30px 20px 50px;
  color: var(--text-secondary);
  font-size: 0.85rem;
  border-top: 1px solid var(--border);
}

footer.site-footer nav {
  margin-top: 10px;
  display: flex;
  gap: 16px;
}

footer.site-footer a {
  color: var(--text-secondary);
}