/* Compact seven-section chooser for Government 1.03. */
.history-hub {
  width: min(1160px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(2rem, 5vw, 4.5rem) 0 5rem;
}
.hub-hero {
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 5px double #000;
  background: rgba(255,255,255,.97);
  box-shadow: 10px 10px 0 var(--wash), 13px 13px 0 #000;
}
.hub-hero h1 {
  margin: 0;
  padding: .12em 0 .18em;
  border-block: 7px solid #000;
  font-size: clamp(3.8rem, 10vw, 8.5rem);
  line-height: .88;
}
.hub-hero .essential { max-width: none; margin: 1.25rem 0 0; text-align: left; }
.hub-big-idea {
  margin: clamp(2rem, 5vw, 3.5rem) 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  color: #000;
  background: var(--wash);
  border: 5px double #000;
  box-shadow: 7px 7px 0 #000;
  text-align: left;
}
.hub-big-idea .chapter { color: var(--red); }
.hub-big-idea h2 { margin: .15rem 0 .55rem; font-size: clamp(2rem, 4.5vw, 3.7rem); line-height: .95; }
.hub-big-idea > p:last-child { max-width: 58rem; margin: 0; font-size: clamp(1.05rem, 2vw, 1.3rem); line-height: 1.45; }
.section-chooser > header { margin-bottom: 1.35rem; }
.section-chooser > header h2 { margin: .15rem 0 0; font-size: clamp(2.5rem, 6vw, 5.2rem); line-height: .92; }
.presenter-card {
  margin: clamp(3rem, 7vw, 5rem) 0 0;
  padding: clamp(1.25rem, 3vw, 2rem);
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: end;
  gap: .4rem 1.5rem;
  color: #fff;
  background: #000;
  border: 1px solid #777;
  border-bottom: 10px solid #777;
  border-radius: 8px;
  text-decoration: none;
}
.presenter-card__label { color: #d8d8d6; font-family: "Arial Black", Arial, sans-serif; font-size: .78rem; letter-spacing: .14em; }
.presenter-card strong { grid-column: 1; font-family: "Arial Black", Impact, Arial, sans-serif; font-size: clamp(2rem, 5vw, 4.2rem); line-height: .92; }
.presenter-card small { grid-column: 1; font-weight: 900; letter-spacing: .09em; }
.presenter-card__action { grid-column: 2; grid-row: 1 / 4; align-self: center; padding: .75rem 1rem; color: #000; background: #fff; border: 1px solid #aaa; border-radius: 3px; font-weight: 900; letter-spacing: .06em; }
.presenter-card:hover .presenter-card__action, .presenter-card:focus-visible .presenter-card__action { color: #fff; background: #343638; }
.presenter-card:focus-visible { outline: 4px solid #1266d4; outline-offset: 4px; }
.section-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1.25rem; }
.section-card {
  min-height: 240px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  color: #000;
  background: #fff;
  border: 4px solid #000;
  box-shadow: 6px 6px 0 var(--wash), 9px 9px 0 #000;
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease;
}
.section-card:nth-child(even) { background: var(--wash); }
.section-card span { font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif; font-size: 4.5rem; line-height: .9; }
.section-card strong {
  margin-top: auto;
  font-family: Impact, Haettenschweiler, "Arial Narrow Bold", sans-serif;
  font-size: clamp(1.55rem, 2.6vw, 2.3rem);
  line-height: .96;
  text-transform: uppercase;
}
.section-card small {
  margin-top: .65rem;
  padding-top: .55rem;
  border-top: 2px solid #000;
  font-family: "Arial Narrow", Arial, sans-serif;
  font-size: .78rem;
  font-weight: 900;
  letter-spacing: .12em;
}
.section-card:hover, .section-card:focus-visible {
  color: #fff;
  background: #000;
  box-shadow: 3px 3px 0 #fff, 6px 6px 0 #000;
  transform: translate(3px,3px);
  outline: 3px double #000;
  outline-offset: 5px;
}
.hub-synthesis {
  margin-top: clamp(3rem, 7vw, 5rem);
}
.hub-synthesis h2 {
  margin: .15rem 0 1.5rem;
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: .92;
}
.hub-synthesis .causal-chain { align-items: stretch; }
.hub-synthesis .causal-chain b {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 4.5rem;
  text-align: center;
}
@media (max-width: 760px) {
  .section-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .history-hub { width: min(100% - 1rem, 520px); }
  .hub-hero { box-shadow: 6px 6px 0 var(--wash), 9px 9px 0 #000; }
  .section-card { min-height: 170px; }
  .presenter-card { grid-template-columns: 1fr; }
  .presenter-card__action { grid-column: 1; grid-row: auto; justify-self: start; margin-top: .65rem; }
  .hub-synthesis .causal-chain { display: grid; grid-template-columns: 1fr; gap: .45rem; }
  .hub-synthesis .causal-chain i { transform: rotate(90deg); text-align: center; }
}
@media (prefers-reduced-motion: reduce) { .section-card { transition: none; } }