:root {
  color-scheme: light dark;
  --fg: #16181d;
  --bg: #ffffff;
  --muted: #5c6370;
  --line: #d8dbe2;
  --accent: #0a58ca;
  --nav-bg: #0f1220;
  --nav-fg: #e9ecf4;
  --nav-muted: #a7b0c6;
  --nav-accent: #ffd166;
}

@media (prefers-color-scheme: dark) {
  :root {
    --fg: #e6e8ec;
    --bg: #14161a;
    --muted: #9aa1ad;
    --line: #2c3037;
    --accent: #7aa7ff;
  }
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  color: var(--fg);
  background: var(--bg);
  font: 16px/1.65 system-ui, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .75rem 1.5rem;
  padding: .7rem 1.25rem;
  background: var(--nav-bg);
  color: var(--nav-fg);
  box-shadow: 0 1px 0 rgba(255, 255, 255, .06);
}

.nav-brand {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-weight: 700;
  letter-spacing: .04em;
  text-transform: uppercase;
  font-size: .95rem;
  color: var(--nav-fg);
  text-decoration: none;
}
.nav-brand:hover { color: var(--nav-accent); }

.nav-logo {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: block;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.25rem;
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
}

.nav-links a {
  color: var(--nav-muted);
  text-decoration: none;
  font-size: .95rem;
  padding: .15rem 0;
  border-bottom: 2px solid transparent;
}
.nav-links a:hover { color: var(--nav-fg); }
.nav-links a.is-active {
  color: var(--nav-fg);
  border-bottom-color: var(--nav-accent);
}

.home { overflow: hidden; }

.home .hero-wrap { height: 100vh; }

.home .nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  background: linear-gradient(to bottom,
              rgba(3, 4, 12, .72) 0%, rgba(3, 4, 12, .35) 60%, transparent 100%);
  box-shadow: none;
}

main {
  flex: 1 0 auto;
  width: 100%;
  max-width: 46rem;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

h1 { font-size: 1.7rem; line-height: 1.25; margin: 0 0 .35rem; }
h2 { font-size: 1.12rem; margin: 2.2rem 0 .6rem; }
p, ul { margin: .6rem 0; }
ul { padding-left: 1.25rem; }

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

.lead { margin-top: 0; color: var(--muted); }

table {
  border-collapse: collapse;
  width: 100%;
  margin: .6rem 0 1.2rem;
  font-size: .95rem;
}
th, td {
  border: 1px solid var(--line);
  padding: .45rem .6rem;
  text-align: left;
  vertical-align: top;
}
th { font-weight: 600; }

code { font-size: .93em; word-break: break-all; }

main footer {
  margin-top: 3rem;
  padding-top: 1.2rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .92rem;
}

.site-footer {
  padding: 1.5rem 1.25rem;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: .9rem;
  text-align: center;
}

.home .site-footer {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  border-top: 0;
  color: var(--nav-muted);
  background: linear-gradient(to top,
              rgba(3, 4, 12, .72) 0%, rgba(3, 4, 12, .35) 60%, transparent 100%);
}

@media (max-width: 34rem) {
  .nav { gap: .5rem 1rem; }
  .nav-links { margin-left: 0; gap: .35rem .9rem; }
}