*,
*::before,
*::after { box-sizing: border-box; }

html { color: var(--ink); background: var(--bg); font-family: var(--font-body); }
body { min-width: 0; margin: 0; }
a { color: var(--accent); }
a:hover { color: var(--accent-dark); }
:focus-visible { outline: 3px solid var(--accent); outline-offset: 3px; }

.skip-link {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 2;
  padding: 0.55rem 0.8rem;
  color: var(--surface);
  background: var(--accent);
  transform: translateY(-120%);
}

.skip-link:focus { transform: translateY(0); }

.artifact-topnav {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 2rem;
  margin-bottom: clamp(2rem, 5vw, 4rem);
  font: 500 0.82rem/1.4 var(--font-display);
}

.artifact-topnav > a { text-decoration: none; }
.artifact-topnav > a:hover { text-decoration: underline; }

.back-link {
  display: inline-block;
  font: 500 0.82rem/1.4 var(--font-display);
  text-decoration: none;
}

.back-link:hover { text-decoration: underline; }
.back-link--footer { margin: 2rem 0 0; }

.artifact-links { border-top: 1px solid var(--ink); }

.source-link,
.related-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 0.8rem;
  align-items: center;
  padding: 1.15rem 0;
  border-bottom: 1px solid var(--ink);
  color: var(--ink);
  font: 500 clamp(0.78rem, 2vw, 0.95rem)/1.35 var(--font-display);
  text-decoration: none;
}

.related-link { grid-template-columns: minmax(0, 1fr) auto; }
.source-link:hover,
.related-link:hover { color: var(--accent-dark); }

.md-file-icon {
  position: relative;
  display: inline-grid;
  width: 2rem;
  height: 2.4rem;
  place-items: end center;
  padding-bottom: 0.25rem;
  border: 1.5px solid currentColor;
  font-size: 0.58rem;
  font-weight: 700;
  line-height: 1;
}

.md-file-icon::before {
  content: "";
  position: absolute;
  top: -1.5px;
  right: -1.5px;
  width: 0.72rem;
  height: 0.72rem;
  border-bottom: 1.5px solid currentColor;
  border-left: 1.5px solid currentColor;
  background: var(--bg);
}

.download-arrow { font-size: 1.35rem; }

@media print {
  .skip-link,
  .artifact-topnav,
  .back-link,
  .artifact-links { display: none; }
  .artifact-shell { width: 100%; padding: 0; }
}