.trek { padding-bottom: 80px; }
.trek-intro { padding: 62px 0 58px; }
.trek-hero { display: grid; grid-template-columns: 1fr 1.15fr; gap: 24px; align-items: center; margin: 22px 0 34px; }
.trek-hero h1 { font-size: clamp(58px, 6.6vw, 96px); }
.trek-hero figure { margin: 0; }
.trek-hero img { width: 100%; height: auto; }
.trek-intro h1 em { color: var(--rust); }
.trek-deck { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: end; }
.trek-deck > p:last-child { color: var(--muted); max-width: 440px; font-size: 16px; }
.trek-deck cite { font-style: normal; }
.trek-library { border-top: 1px solid var(--line); padding-top: 32px; }
.trek-section-head { margin-bottom: 28px; }
.trek-section-head h2 { font-size: 36px; }
.trek-section-head p { color: var(--muted); font-size: 13px; margin-top: 10px; }
.trek-filters { display: flex; flex-wrap: wrap; gap: 16px; align-items: end; padding-bottom: 24px; }
.trek-filters label { display: grid; gap: 8px; font-size: 12px; color: var(--muted); min-width: 200px; }
.trek-filters .trek-search { flex: 1; min-width: 240px; }
.trek select, .trek input, .trek button { font: inherit; color: var(--ink); }
.trek select, .trek input { width: 100%; background: var(--surface); border: 1px solid var(--line); border-radius: 0; min-height: 46px; padding: 10px 12px; font-size: 16px; }
.trek button { background: transparent; border: 0; border-bottom: 1px solid currentColor; padding: 8px 0; cursor: pointer; font-size: 14px; }
.trek input:focus-visible, .trek select:focus-visible, .trek button:focus-visible { outline: 2px solid var(--rust); outline-offset: 4px; }
.trek-guidance { display: grid; grid-template-columns: clamp(128px, 20vw, 240px) minmax(0, 1fr); align-items: center; gap: clamp(24px, 4vw, 48px); margin: 4px 0 28px; }
.trek-guidance-art { width: 100%; height: auto; justify-self: start; }
.trek-hint { color: var(--muted); font-size: 12px; margin: 0 0 24px; }
.trek-arc { border-top: 1px solid var(--line); }
.trek-arc:last-child { border-bottom: 1px solid var(--line); }
.trek-arc > summary { padding: 26px 0; display: flex; justify-content: space-between; align-items: center; gap: 24px; cursor: pointer; list-style: none; }
.trek-arc > summary::-webkit-details-marker { display: none; }
.trek-arc > summary::marker { content: ''; }
.trek-arc > summary:focus-visible { outline: 2px solid var(--rust); outline-offset: 4px; }
.trek-arc > summary::after { flex-shrink: 0; content: '+'; font-size: 28px; color: var(--rust); }
.trek-arc[open] > summary::after { content: '−'; }
.trek-arc h3 { font-size: 25px; }
.trek-guide { color: var(--muted); font-size: 13px; max-width: 850px; margin: 0; }
.trek-arc-theme { color: var(--muted); font-size: 15px; margin-top: 10px; max-width: 700px; }
.trek-arc-meta { color: var(--muted); font-size: 12px; margin-top: 10px; }
.trek-arc-body { max-width: 850px; padding: 0 0 32px; }
.trek-group + .trek-group { margin-top: 36px; }
.trek-group-disclosure { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.trek-group-disclosure > summary { padding: 18px 0; display: flex; justify-content: space-between; align-items: center; gap: 24px; cursor: pointer; list-style: none; }
.trek-group-disclosure > summary::-webkit-details-marker { display: none; }
.trek-group-disclosure > summary::marker { content: ''; }
.trek-group-disclosure > summary:focus-visible { outline: 2px solid var(--rust); outline-offset: 4px; }
.trek-group-disclosure > summary::after { content: '+'; flex-shrink: 0; color: var(--rust); font-size: 22px; }
.trek-group-disclosure[open] > summary::after { content: '−'; }
.trek-group-disclosure > summary h4 { margin-bottom: 0; }
.trek-group-series { color: var(--rust); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; margin-bottom: 6px; }
.trek-group h4 { font-size: 18px; margin-bottom: 16px; }
.trek-notes h4 { font-size: 19.5px; margin: 0 0 16px; }
.trek-notes { display: grid; grid-template-columns: 216px minmax(0, 1fr); align-items: center; gap: 26px; margin-top: 28px; }
.trek-notes-art { width: 100%; height: auto; }
.trek-notes-copy { padding-left: 30px; }
.trek-notes p { font-size: 15.1px; color: var(--muted); margin-top: 12px; }
.trek-episodes { padding-left: 26px; margin: 0; }
.trek-episodes li { padding: 16px 0 16px 12px; border-top: 1px solid var(--line); }
.trek-episodes li::marker { color: var(--rust); font-size: 12px; }
.trek-episode-code { display: block; font-size: 11px; color: var(--muted); letter-spacing: .06em; margin-bottom: 5px; }
.trek-episode-title { font-size: 18px; }
.trek-episode-links { font-size: 13px; margin-top: 6px; }
.trek-episode-title a { text-underline-offset: 4px; }
.trek-episodes p { color: var(--muted); font-size: 14px; margin-top: 8px; }
.trek-empty { margin-top: 4px; padding: 38px 0 44px; border-top: 1px solid var(--line); }
.trek-empty h3 { font-family: var(--serif); font-size: 29px; font-weight: 400; }
.trek-empty p { color: var(--muted); font-size: 16px; max-width: 560px; margin-top: 12px; }
.trek-empty button { margin-top: 20px; }
.trek [hidden] { display: none !important; }
@media (max-width: 700px) {
  .trek-intro { padding: 38px 0; }
  .trek-hero { grid-template-columns: 1fr; gap: 14px; }
  .trek-hero figure { width: min(460px, 100%); justify-self: center; }
  .trek-hero h1 { font-size: clamp(54px, 15vw, 72px); }
  .trek-deck { grid-template-columns: 1fr; gap: 22px; }
  .trek-filters { flex-direction: column; align-items: stretch; }
  .trek-filters label, .trek-filters .trek-search { min-width: 0; }
  .trek-section-head h2 { font-size: 30px; }
  .trek-notes { grid-template-columns: 96px minmax(0, 1fr); gap: 12px; }
  .trek-notes-copy { padding-left: 16px; }
  .trek-arc h3 { font-size: 23px; }
}
@media (min-width: 360px) and (max-width: 559px) {
  .trek-guidance { display: flow-root; }
  .trek-guidance-art { float: left; width: 112px; margin: 4px 20px 12px 0; }
}
@media (max-width: 359px) {
  .trek-guidance { grid-template-columns: 1fr; gap: 20px; }
  .trek-guidance-art { width: 160px; justify-self: center; }
}