:root {
  color-scheme: dark;
  --bg: #0f1114;
  --surface: #1a1e24;
  --text: #f2f4f7;
  --muted: #9aa3b2;
  --accent: #5ac8a8;
  --border: rgba(255, 255, 255, 0.08);
  --max: 720px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

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

header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, #151a20 0%, var(--bg) 100%);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 2rem 1.25rem 3rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.brand-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(145deg, #2a3038, #12151a);
  border: 1px solid var(--border);
  display: grid;
  place-items: center;
  font-size: 1.25rem;
}

h1 {
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 0.25rem;
}

.tagline {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

nav.site-nav {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  font-size: 0.95rem;
}

nav.site-nav a {
  text-decoration: none;
}

nav.site-nav a[aria-current="page"] {
  color: var(--text);
  font-weight: 600;
}

main h2 {
  font-size: 1.15rem;
  margin: 2rem 0 0.75rem;
}

main p,
main li {
  color: #d5dbe5;
}

main ul {
  padding-left: 1.25rem;
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem 1.5rem;
  margin: 1.25rem 0;
}

.card h2 {
  margin-top: 0;
}

footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}