:root {
  --bg:#17131f;
  --paper:#fbf3df;
  --ink:#2b2336;
  --gold:#f3b544;
  --blue:#9ed9ef;
  --muted:#cbc4d3;
  font-family:"Trebuchet MS","Microsoft JhengHei",system-ui,sans-serif;
  color:var(--paper);
  background:var(--bg)
}
* {
  box-sizing:border-box
}
body {
  margin:0;
  background:linear-gradient(#ffffff04 1px,transparent 1px),linear-gradient(90deg,#ffffff04 1px,transparent 1px),var(--bg);
  background-size:24px 24px;
  line-height:1.6
}
button,a,summary {
  -webkit-tap-highlight-color:transparent
}
button,summary {
  cursor:pointer
}
button {
  font:inherit;
  min-height:44px;
  padding:9px 14px;
  border:2px solid #746982;
  border-radius:7px;
  color:var(--paper);
  background:#30283e
}
a {
  color:var(--blue)
}
a:focus-visible,button:focus-visible,summary:focus-visible {
  outline:3px solid #75d8ff;
  outline-offset:4px
}
[hidden] {
  display:none!important
}
.skip {
  position:absolute;
  top:-80px;
  z-index:9;
  background:var(--paper);
  color:var(--ink);
  padding:12px
}
.skip:focus {
  top:0
}
.teacher-bar {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:12px;
  padding:12px max(18px,calc((100vw - 1180px)/2));
  background:var(--paper);
  color:var(--ink);
  border-bottom:4px solid var(--ink)
}
.teacher-bar p {
  font-size:12px;
  margin:0;
  color:#4d5978;
  letter-spacing:.09em
}
.teacher-bar strong {
  font-size:20px
}
.teacher-bar button {
  background:var(--ink);
  font-size:14px
}
.controls {
  display:flex;
  gap:8px;
  align-items:center;
  flex-wrap:wrap
}
output {
  min-width:44px;
  text-align:center
}
.lesson-clock {
  display:grid;
  grid-template-columns:repeat(6,1fr);
  max-width:1220px;
  margin:16px auto 0;
  padding:0 20px;
  gap:8px
}
.lesson-clock button {
  font-size:14px;
  padding:7px 8px
}
.lesson-clock span {
  display:block;
  font-size:12px;
  color:var(--muted)
}
.lesson-clock [aria-current] {
  border-color:var(--gold);
  background:#59412a
}
.lesson-clock [aria-current] span {
  color:#ffda93
}
main {
  max-width:1220px;
  margin:auto;
  padding:24px 20px 28px;
  min-height:68vh
}
.stamp {
  display:flex;
  justify-content:space-between;
  gap:16px;
  border-bottom:1px solid #62556f;
  padding-bottom:8px;
  color:var(--gold);
  font-size:13px;
  letter-spacing:.07em
}
.stamp span {
  color:var(--muted);
  letter-spacing:0
}
.kicker {
  font-size:13px;
  color:var(--gold);
  font-weight:700;
  letter-spacing:.04em
}
h1,h2,h3,p {
  overflow-wrap:anywhere
}
h1,h2 {
  font-size:clamp(30px,4.5vw,54px);
  line-height:1.28;
  letter-spacing:-.02em;
  margin:20px 0
}
h1 span,h2 span {
  display:inline-block;
  margin-right:.18em
}
h3 {
  font-size:22px;
  line-height:1.4;
  margin:12px 0
}
.lead {
  font-size:21px;
  color:#e2dae9;
  max-width:45em
}
.compact {
  font-size:18px
}
.split {
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:28px;
  align-items:center
}
.cards {
  display:grid;
  gap:16px;
  margin:22px 0
}
.three {
  grid-template-columns:repeat(3,1fr)
}
article {
  background:#2a2336;
  border:1px solid #62556f;
  padding:20px;
  border-radius:8px
}
article p {
  margin:10px 0 0
}
.paper {
  color:var(--ink);
  background:var(--paper);
  padding:24px;
  border:3px solid var(--ink);
  border-radius:9px;
  box-shadow:5px 5px 0 #0005
}
.paper .kicker {
  color:#775012
}
.paper a {
  color:#24518a
}
.tag {
  font-size:12px;
  font-weight:bold;
  letter-spacing:.05em
}
.cue {
  border-left:5px solid var(--gold);
  padding:14px 20px;
  background:#332a36;
  margin:20px 0
}
.cue p {
  margin:5px 0 0
}
details {
  border:1px solid #756580;
  border-radius:6px;
  margin:16px 0;
  padding:10px 16px
}
summary {
  min-height:30px;
  font-weight:bold
}
.paper details {
  border-color:#968775
}
details p {
  font-size:16px
}
figure {
  margin:0
}
img {
  width:100%;
  display:block;
  height:auto;
  border-radius:6px
}
.still {
  transform:rotate(-1deg);
  background:var(--paper);
  padding:10px;
  color:var(--ink);
  box-shadow:5px 5px 0 #0005
}
figcaption {
  font-size:13px;
  padding-top:8px
}
.watch-grid {
  display:grid;
  grid-template-columns:minmax(0,1.8fr) minmax(270px,1fr);
  gap:20px;
  align-items:start
}
video {
  width:100%;
  aspect-ratio:16/9;
  background:#000;
  border:2px solid #665672;
  border-radius:6px
}
.video-controls {
  margin-top:8px
}
.video-controls button {
  font-size:14px;
  padding:8px
}
.primary,.big-link {
  background:var(--gold);
  color:var(--ink);
  border-color:var(--gold);
  font-weight:bold
}
.source,#video-status {
  font-size:13px;
  color:var(--muted)
}
.fallbacks {
  display:grid;
  gap:15px;
  grid-template-columns:repeat(3,1fr)
}
.heat {
  display:flex;
  height:55px;
  border:2px solid var(--ink);
  font-size:18px;
  font-weight:bold
}
.heat span {
  display:grid;
  place-items:center;
  background:#d6a340
}
.heat span:nth-child(2) {
  background:#7fb8cb
}
.heat span:nth-child(3) {
  background:#d4999c
}
.worksheet {
  padding-left:25px
}
.worksheet li {
  padding:12px 0;
  border-bottom:1px dashed #a39784
}
.worksheet b {
  display:block
}
.big-link {
  display:inline-block;
  padding:16px 20px;
  border-radius:7px;
  text-decoration:none;
  font-size:20px
}
.route {
  padding-left:26px
}
.route li {
  padding:8px 0
}
.route span {
  display:block;
  color:var(--muted)
}
.end-note {
  font-size:25px;
  color:var(--gold);
  margin:30px 0
}
footer {
  max-width:1220px;
  margin:auto;
  border-top:1px solid #62556f;
  padding:16px 20px 25px;
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  justify-content:space-between;
  color:var(--muted);
  font-size:12px
}
footer button {
  font-size:12px
}
body .paper p {
  color:var(--ink)
}
@media(max-width:760px) {
  .teacher-bar {
  flex-wrap:wrap;
  padding:12px 16px
}
.teacher-bar strong {
  font-size:18px
}
.lesson-clock {
  grid-template-columns:repeat(3,1fr);
  padding:0 16px
}
.lesson-clock button {
  font-size:12px
}
.split,.watch-grid,.three {
  grid-template-columns:1fr;
  gap:15px
}
main {
  padding:20px 16px
}
.stamp {
  font-size:11px;
  gap:8px
}
h1,h2 {
  font-size:30px
}
h3 {
  font-size:21px
}
.lead {
  font-size:18px
}
.paper,article {
  padding:18px
}
.fallbacks {
  grid-template-columns:1fr
}
.still {
  transform:none
}
.cards {
  margin:15px 0
}
.cue {
  padding:12px 15px
}
.end-note {
  font-size:22px
}

}
@media(prefers-reduced-motion:reduce) {
  * {
  scroll-behavior:auto
}

}

@media(min-width:761px) {
  .watch-grid video {
  max-height:340px;
  object-fit:contain
}
section:has(.watch-grid) h2 {
  font-size:44px;
  margin:14px 0
}
section:has(.watch-grid)>.lead {
  margin:10px 0 16px
}

}