.rules-shell {
  width: min(100% - 3rem, 76rem);
  margin-inline: auto;
  padding-block: clamp(2rem, 6vw, 5rem);
}

.rules-header {
  padding: clamp(2.5rem, 7vw, 6rem) 0;
  border-block: 1px solid var(--ink);
}

.eyebrow,
.rule-number {
  color: var(--accent-text);
  font: 700 0.68rem/1.3 var(--font-display);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.rules-header h1 {
  max-width: 15ch;
  margin: 0.7rem 0 1.4rem;
  font: 700 clamp(2.2rem, 6vw, 5rem)/1 var(--font-display);
  letter-spacing: -0.05em;
}

.lead {
  max-width: 54rem;
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.55;
}

.rules section {
  display: grid;
  grid-template-columns: 3rem minmax(0, 1fr);
  gap: 0 1.5rem;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0;
  border-bottom: 1px solid var(--border);
}

.rules section > :not(.rule-number) { grid-column: 2; }
.rule-number { grid-row: 1 / span 4; padding-top: 0.45rem; }

.rules h2 {
  max-width: 24ch;
  margin: 0 0 1.4rem;
  font: 700 clamp(1.5rem, 4vw, 2.7rem)/1.1 var(--font-display);
  letter-spacing: -0.035em;
}

.rules p,
.rules dd { max-width: 74ch; line-height: 1.7; }
.rules p + p { margin-top: 0; }

.highlight {
  margin-inline: calc(clamp(1rem, 4vw, 2.5rem) * -1);
  padding-inline: clamp(1rem, 4vw, 2.5rem) !important;
  background: var(--accent-pale);
}

.prohibition {
  max-width: 74ch;
  margin-top: 1rem;
  padding: 1rem 1.2rem;
  border: 1px solid var(--ink);
  background: var(--bg);
}

.prohibition p:last-child { margin-bottom: 0; }

.statuses {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0 0 1.4rem;
  border: 1px solid var(--ink);
  background: var(--ink);
}

.statuses div { padding: 1rem; background: var(--bg); }
.statuses dt { font: 700 0.86rem/1.3 var(--font-display); }
.statuses dd { margin: 0.55rem 0 0; color: var(--body-text); font-size: 0.88rem; }
.rules code { font-family: var(--font-display); }

@media (max-width: 680px) {
  .rules-shell { width: min(100% - 2rem, 76rem); }
  .rules section { grid-template-columns: 1fr; }
  .rules section > :not(.rule-number) { grid-column: 1; }
  .rule-number { grid-row: auto; margin-bottom: 0.5rem; padding-top: 0; }
  .statuses { grid-template-columns: 1fr; }
}

@media print {
  .incident-collection,
  .artifact-topnav,
  .artifact-links { display: none; }
}