:root {
  color-scheme: light;
  --fg: #111;
  --muted: #555;
  --line: #ddd;
  --bg: #fff;
  --accent: #0b6;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font: 16px/1.5 system-ui, sans-serif;
  color: var(--fg);
  background: var(--bg);
}

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

.wrap {
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem 1.25rem 3rem;
}

.skip {
  position: absolute;
  left: -999px;
}

.skip:focus {
  left: 1rem;
  top: 1rem;
}

header,
footer {
  border-bottom: 1px solid var(--line);
  padding: 0.75rem 0 1rem;
}

footer {
  border-bottom: 0;
  border-top: 1px solid var(--line);
  margin-top: 2rem;
  color: var(--muted);
  font-size: 0.875rem;
}

nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem 0.85rem;
  font-size: 0.875rem;
}

h1 {
  font-size: 1.5rem;
  margin: 1.25rem 0 0.5rem;
}

h2 {
  font-size: 1.15rem;
  margin: 1.5rem 0 0.5rem;
}

.muted {
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 1rem;
}

@media (min-width: 720px) {
  .grid-2 {
    grid-template-columns: 1fr 1fr;
  }
}

.embed {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  background: #f4f4f4;
}

.embed iframe,
.embed video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.15rem 0.6rem;
  font-size: 0.8rem;
}

.hidden-frame {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
  border: 0;
}

ul.pages {
  columns: 2;
  padding-left: 1.2rem;
}