[data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) > .ob-cover {
  display: none;
}

.ee-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  align-items: start;
  gap: 3rem;
  padding-block: 2rem;
  border-block: 3px solid var(--ob-color-text);
}

.ee-hero > * {
  min-width: 0;
}

.ee-kicker,
.ee-strata,
.ee-panel-title,
.ee-runtime-strip {
  font: 0.75rem / 1.8 var(--ob-font-mono);
}

.ee-kicker,
.ee-strata strong,
.ee-panel-title {
  color: var(--ob-color-accent-soft);
}

.ee-strata {
  display: grid;
  padding: 0;
  margin: 0;
  list-style: none;
}

.ee-strata li {
  display: grid;
  grid-template-columns: 7.5rem minmax(0, 1fr);
  align-items: center;
  gap: 1rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--ob-color-border);
}

.ee-strata :is(time, .ee-today) { color: var(--ob-color-accent-soft); font: 400 clamp(1.5rem, 2.8vw, 2.4rem) / 1 var(--ob-font-mono); letter-spacing: -0.06em; white-space: nowrap; }

.ee-strata strong,
.ee-strata span {
  display: block;
}

.ee-strata span {
  color: var(--ob-color-muted);
}

.ee-comparison {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-block: 2rem 1rem;
}

.ee-actions { display: flex; flex-wrap: wrap; gap: 1rem 1.5rem; margin-top: 1.5rem; font: 0.8rem / 1.8 var(--ob-font-mono); }
.ee-lab { margin-block: 3rem; padding-block: 1.5rem; border-block: 1px solid var(--ob-color-border); background: transparent; }
.ee-lab > p:not(.ee-kicker) { max-width: 70ch; color: var(--ob-color-muted); font-size: 0.85rem; }
.ee-lab-controls[hidden],
.ee-runner[hidden] { display: none; }
.ee-era-buttons { display: flex; flex-wrap: wrap; gap: 0; margin-top: 1.5rem; border-bottom: 1px solid var(--ob-color-border); }
.ee-lab button { padding: 0.65rem 0.85rem; border: 1px solid var(--ob-color-border); border-radius: 4px; color: var(--ob-color-text); background: var(--ob-color-surface-raised); font: 0.75rem / 1.8 var(--ob-font-mono); cursor: pointer; }
.ee-era-buttons button { border: 0; border-bottom: 3px solid transparent; border-radius: 0; background: transparent; }
.ee-era-buttons [aria-pressed="true"] { border-bottom-color: var(--ob-color-accent-soft); color: var(--ob-color-accent-soft); }
.ee-lab button:disabled { color: var(--ob-color-subtle); cursor: default; }
.ee-lab button:focus-visible,
.ee-actions a:focus-visible,
.ee-reading-path a:focus-visible { outline: 2px solid var(--ob-color-accent-soft); outline-offset: 4px; }
.ee-era-context { color: var(--ob-color-muted); font-size: 0.85rem; min-height: 5em; }
[data-ob-theme="epoch-engine"] .ob-prose .ee-lab h2 { margin-top: 0; font-size: clamp(1.6rem, 3.5vw, 2.7rem); line-height: 1.25; }
[data-ob-theme="epoch-engine"] .ob-prose .ee-lab pre { white-space: pre-wrap; overflow-wrap: anywhere; font: 0.75rem / 1.8 var(--ob-font-mono); }
[data-ob-theme="epoch-engine"] .ob-prose .ee-lab .ee-example { margin: 0; padding: 1.25rem; min-height: 14em; border: 0; background: var(--ob-color-surface-raised); color: var(--ob-color-text); }
.ee-runner details { margin-block: 1rem; color: var(--ob-color-muted); font-size: 0.8rem; }
.ee-runner summary { cursor: pointer; }
.ee-runner [data-ee-run] { border-color: var(--ob-color-accent-border); background: var(--ob-color-accent); color: var(--ob-color-accent-contrast); }
.ee-results { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.ee-results > div { min-width: 0; }
.ee-results span { color: var(--ob-color-subtle); font: 0.65rem / 1.8 var(--ob-font-mono); }
.ee-runner [role="status"] { color: var(--ob-color-muted); font-size: 0.8rem; }
.ee-reading-path { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; margin-block: 2rem; }
.ee-reading-path a { display: block; padding: 1rem 0; border-top: 2px solid var(--ob-color-text); color: var(--ob-color-text); text-decoration: none; }
.ee-reading-path a:hover { background: var(--ob-color-surface-raised); }
.ee-reading-path span { display: block; color: var(--ob-color-accent-soft); font: 0.65rem / 1.8 var(--ob-font-mono); }
.ee-reading-path strong { display: block; margin-top: 0.75rem; font-size: 0.95rem; }

.ee-comparison > div {
  min-width: 0;
  overflow: hidden;
  border: 1px solid var(--ob-color-border);
  border-radius: 0;
  background: var(--ob-color-surface);
}

.ee-panel-title {
  padding: 0.8rem 1rem;
  border-bottom: 1px solid var(--ob-color-border);
}
.ee-comparison > div:first-child .ee-panel-title::before { content: "- "; color: var(--ob-color-subtle); }
.ee-comparison > div:last-child .ee-panel-title::before { content: "+ "; color: var(--ob-color-accent-soft); }
.ee-comparison > div:last-child { border-top: 3px solid var(--ob-color-accent); }

.ee-comparison .ob-code-block,
.ee-comparison pre {
  margin: 0;
  border: 0;
  border-radius: 0;
}

.ee-note {
  color: var(--ob-color-subtle);
  font-size: 0.85rem;
}

.ee-runtime-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  padding: 0;
}

.ee-runtime-strip li {
  padding: 0.2rem 0.7rem;
  border: 1px solid var(--ob-color-border);
  border-radius: 4px;
  color: var(--ob-color-muted);
  background: var(--ob-color-surface);
}

[data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) .ob-series-parts-full {
  margin-left: 0.5rem;
  padding-left: 1rem;
  border-left: 1px solid var(--ob-color-border);
}

[data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) .ob-series-parts-full > li {
  position: relative;
}

[data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) .ob-part-body {
  min-width: 0;
  overflow-wrap: anywhere;
}

[data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) .ob-series-parts-full > li::before {
  content: "";
  position: absolute;
  top: 2rem;
  left: -1.25rem;
  width: 0.5rem;
  height: 2px;
  background: var(--ob-color-accent-soft);
}

@media (max-width: 900px) {
  .ee-hero,
  .ee-comparison,
  .ee-results,
  .ee-reading-path {
    grid-template-columns: minmax(0, 1fr);
  }
}

@media (max-width: 540px) {
  [data-ob-theme="epoch-engine"] .ob-section:has(.ee-hero) .ob-part {
    padding: 1rem 0.5rem;
    gap: 0.75rem;
  }
}

@media print {
  .ee-strata li {
    box-shadow: none;
  }
}