.atlas-page .atlas-time-head {
  display: block;
  padding: 2rem 0 1.15rem;
}
.atlas-page .atlas-time-head h1 {
  font-size: clamp(2.65rem, 5vw, 4.1rem);
  margin: 0;
}
.chronology-heading {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .45rem 1.5rem;
  margin-bottom: 1rem;
}
.chronology-heading h2 {
  margin: 0;
  font: 400 clamp(2rem, 3.8vw, 3rem)/1 var(--serif);
}
.chronology-heading p { margin: 0; color: var(--muted); }
.chronology-tools {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(11rem,16rem);
  gap: 1rem 1.75rem;
  align-items: end;
}
.chronology-tools fieldset { border: 0; padding: 0; margin: 0; min-width: 0; }
.chronology-tools legend, .chronology-tools .atlas-search-label {
  font-size: .875rem;
  font-weight: 650;
}
.chronology-tools .period-buttons { display: flex; flex-wrap: wrap; gap: .375rem; margin-top: .375rem; }
.chronology-tools .chip { min-height: 44px; font-size: .8rem; padding-inline: .68rem; }
.chronology-tools select { display: none; }
.chronology-tools .atlas-search-label { min-width: 0; }
.chronology-tools input { min-height: 44px; font-weight: 400; }
.chronology-tools input::placeholder { color: var(--muted); opacity: 1; }
.chronology-status {
  margin: 1rem 0 .2rem;
  font-size: .875rem;
  font-weight: 700;
  color: var(--green);
}
.chronology-note, .chronology-bounds, .chronology-region {
  color: var(--muted);
  font-size: .82rem;
}
.chronology-note { margin: 0 0 .75rem; }
.chronology-board { border-block: 1px solid var(--line); }
.chronology-overview-key {
  display: grid;
  grid-template-columns: minmax(0,1fr) auto;
  align-items: baseline;
  gap: .25rem 1rem;
  padding: .65rem .75rem;
  background: var(--mint);
  font-size: .82rem;
  font-variant-numeric: tabular-nums;
}
.chronology-era h3, .chronology-focus-title {
  margin: 0;
  padding: .75rem;
  background: #eeefe7;
  font: 400 1.65rem/1 var(--serif);
}
.chronology-era + .chronology-era { border-top: 1px solid var(--line); margin-top: .65rem; }
.chronology-list { list-style: none; margin: 0; padding: 0; }
.chronology-list > li { border-top: 1px solid var(--line); }
.chronology-row, .chronology-axis {
  display: grid;
  grid-template-columns: minmax(0,1.15fr) minmax(0,1fr) 1.125rem;
  gap: .75rem 1.5rem;
  padding-inline: .75rem;
}
.chronology-row {
  align-items: center;
  padding-block: .65rem;
  background: var(--white);
  text-decoration: none;
}
.atlas-page .chronology-row:hover { background: var(--paper); text-decoration: none; }
.chronology-row:hover h4 { text-decoration: underline; text-underline-offset: .16em; }
.atlas-chronology :is(a,button,input,select):focus-visible {
  outline: 2px solid var(--green);
  outline-offset: 2px;
}
.atlas-chronology .chronology-row:focus-visible { outline-offset: -3px; }
.chronology-entry { display: grid; grid-template-columns: 5.5rem minmax(0,1fr); align-items: center; gap: .8rem; }
.chronology-art {
  display: block;
  width: 100%;
  aspect-ratio: 11 / 8;
  overflow: hidden;
  background: var(--mint);
}
.chronology-art img { display: block; width: 100%; height: 100%; object-fit: cover; }
.chronology-entry h4 { margin: 0; font: 400 clamp(1.35rem,2.05vw,1.8rem)/1.06 var(--serif); }
.chronology-date { margin: .25rem 0 0; color: var(--green); font-size: .84rem; font-weight: 650; }
.chronology-region { margin: .12rem 0 0; }
.chronology-question { margin: 0; color: var(--muted); font-size: .91rem; }
.chronology-arrow { display: grid; place-items: center; color: var(--green); }
.chronology-axis {
  position: sticky;
  top: 0;
  z-index: 1;
  padding-block: .7rem;
  background: var(--paper);
  font-size: .82rem;
  color: var(--ink);
}
.chronology-comparison .chronology-row { scroll-margin-top: 3.5rem; }
.chronology-axis-key { font-weight: 650; }
.chronology-ticks {
  position: relative;
  display: flex;
  justify-content: space-between;
  font-variant-numeric: tabular-nums;
}
.chronology-ticks span:nth-child(2) {
  position: absolute;
  left: var(--timeline-midpoint);
  transform: translateX(-50%);
}
.chronology-track {
  position: relative;
  border-inline: 1px solid var(--line);
  background: #f0f1ea;
  height: 1.5rem;
}
.chronology-track::before {
  content: "";
  position: absolute;
  height: 100%;
  left: var(--timeline-midpoint);
  border-left: 1px solid var(--line);
}
.chronology-range {
  position: absolute;
  left: var(--start);
  width: calc(var(--end) - var(--start));
  top: .45rem;
  height: .6rem;
  background: var(--green);
}
.chronology-point {
  left: clamp(0px,calc(var(--start) - .25rem),calc(100% - .5rem));
  width: .5rem;
  border-radius: 50%;
}
.chronology-continuation {
  position: absolute;
  top: .37rem;
  border-block: .38rem solid transparent;
}
.chronology-before { left: 0; border-right: .4rem solid var(--ink); }
.chronology-after { right: 0; border-left: .4rem solid var(--ink); }
.chronology-bounds { margin: .2rem 0 0; }
.chronology-empty { border-block: 1px solid var(--line); padding: 1rem 0; margin-top: .75rem; }
.chronology-empty h3 { margin: 0; font: 400 1.7rem/1 var(--serif); }
.chronology-empty p { margin: .45rem 0 .8rem; }
@media (max-width:760px) {
  .chronology-tools { grid-template-columns: minmax(0,.85fr) minmax(0,1.15fr); gap: .75rem; }
  .chronology-tools .period-buttons { display: none; }
  .chronology-tools select {
    display: block;
    width: 100%;
    min-height: 44px;
    margin-top: 5px;
    appearance: none;
    padding: .45rem 1.5rem .45rem .6rem;
    border: 1px solid var(--line);
    border-radius: 3px;
    background: var(--white) url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16' fill='none' stroke='%23263b33' stroke-width='1.5'%3E%3Cpath d='m4 6 4 4 4-4'/%3E%3C/svg%3E") right .4rem center / 1rem no-repeat;
    color: var(--ink);
    font: .875rem var(--sans);
  }
  .chronology-row { grid-template-columns: minmax(0,1fr) 1.125rem; gap: .45rem .6rem; }
  .chronology-arrow { grid-column: 2; grid-row: 1; }
  .chronology-plot, .chronology-question { grid-column: 1 / -1; }
  .chronology-question { padding-left: 4.85rem; }
  .chronology-entry { grid-template-columns: 4.25rem minmax(0,1fr); gap: .6rem; }
  .chronology-axis { grid-template-columns: 1fr; gap: .2rem; }
  .chronology-bounds { font-size: .75rem; }
}