/* TOPx criteria page (/challenge/): the four judging criteria, each with its evidence and links into the demo.
   Page components only; tokens, type, links, section shells, and the footer come from /landing.css, as on the
   Research page. */
.narrow > * {
  max-width: 820px;
}

.page-head {
  padding: clamp(32px, 5vw, 60px) 0 clamp(20px, 3vw, 32px);
}

.page-head h1 {
  max-width: 26ch;
  margin: 0;
  font-size: clamp(2rem, 4.6vw, 3.2rem);
  letter-spacing: -0.01em;
  line-height: 1.1;
}

.ch-video {
  display: block;
  width: 100%;
  max-width: 1120px;
  height: auto;
  aspect-ratio: 16 / 9;
  margin-top: 8px;
  border: 1px solid var(--line-strong);
  background: #000;
}

.ch-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 20px;
  margin-top: 16px;
}

.ch-toc a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
}

.criterion h2 {
  margin-top: 0;
}

.criterion .ch-ask {
  color: var(--muted);
  font-size: 0.9375rem;
}

.criterion h3 {
  margin-top: 28px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line-strong);
  font-size: 1.0625rem;
}

.criterion ul {
  margin: 8px 0 0;
  padding-left: 1.2em;
}

.criterion li {
  margin-top: 6px;
  line-height: 1.55;
}

.ch-table-wrap {
  margin-top: 12px;
  overflow-x: auto;
}

.ch-table {
  width: 100%;
  min-width: 36rem;
  border-collapse: collapse;
  font-size: 0.9375rem;
}

.ch-table th,
.ch-table td {
  padding: 8px 12px 8px 0;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

.ch-table thead th {
  border-bottom: 1px solid var(--line-strong);
  color: var(--muted);
  font-size: 0.875rem;
}