:root {
  --orange: #E65100;
  --orange-light: #F57C00;
  --bg: #ffffff;
  --surface: #f7f7f8;
  --text: #1a1a1a;
  --text-soft: #55575c;
  --border: #e3e3e6;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #131316;
    --surface: #1c1c20;
    --text: #ececee;
    --text-soft: #a8a9ad;
    --border: #2c2c31;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

header {
  background: linear-gradient(135deg, var(--orange) 0%, var(--orange-light) 100%);
  color: #fff;
  padding: 2.5rem 1.25rem 2rem;
}

.wrap {
  max-width: 44rem;
  margin: 0 auto;
  padding: 0 1.25rem;
}

header .wrap { padding: 0 1.25rem; }

.brand {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
}

.tagline {
  margin: 0;
  opacity: 0.92;
  font-size: 1.05rem;
}

nav {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  padding: 0.75rem 0;
}

nav .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

nav a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid transparent;
}

nav a:hover {
  color: var(--orange);
  border-color: var(--border);
}

nav a[aria-current="page"] {
  background: var(--orange);
  color: #fff;
}

main { padding: 2rem 0 4rem; }

h1 {
  font-size: 1.75rem;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}

h2 {
  font-size: 1.2rem;
  margin: 2.25rem 0 0.6rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border);
  letter-spacing: -0.01em;
}

.updated {
  color: var(--text-soft);
  font-size: 0.9rem;
  margin: 0 0 1.5rem;
}

.callout {
  background: var(--surface);
  border-left: 4px solid var(--orange);
  border-radius: 0 8px 8px 0;
  padding: 1rem 1.25rem;
  margin: 1.5rem 0;
}

.callout p { margin: 0; }

ul { padding-left: 1.25rem; }
li { margin-bottom: 0.4rem; }

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

strong { font-weight: 650; }

footer {
  border-top: 1px solid var(--border);
  color: var(--text-soft);
  font-size: 0.875rem;
  padding: 1.5rem 0 3rem;
}

footer p { margin: 0.25rem 0; }