/* =========================================================
   Modern Writing Lab: Learning Lab page
   Loads on top of site.css and terms.css (hero, route line,
   stop headers, picks, sheets, rooms, toast).
   ========================================================= */

.lab-quiet *, .lab-quiet *::before, .lab-quiet *::after { animation: none !important; transition: none !important; }

/* ---------- hero: the page name, what it is, how far you are ---------- */
.lab-hero { padding-bottom: 28px; }
.lab-title { margin: 0; font-size: clamp(64px, 17vw, 168px); font-weight: 800; letter-spacing: -.055em; line-height: .86; }
.lab-title em { color: var(--blue); }
.lab-what { margin: 18px 0 0; max-width: 22ch; font-size: clamp(26px, 4.4vw, 42px); font-weight: 700; letter-spacing: -.03em; line-height: 1.08; }
.lab-hero .kt-lede { max-width: 52ch; }
.lab-hero .kt-lede b { color: var(--ink); }
.lab-meter { display: flex; align-items: center; gap: 12px; margin-top: 24px; max-width: 520px; }
.lm-bar { flex: 1; height: 14px; border: 2px solid var(--ink); border-radius: 999px; background: var(--card); overflow: hidden; }
.lm-bar i { display: block; height: 100%; width: 0; background: var(--lime); border-right: 2px solid var(--ink); transition: width .6s var(--ease-out); }
.lm-bar i[style*="width: 0"] { border-right: 0; }
.lm-txt { font-family: var(--f-mono); font-size: 14px; white-space: nowrap; }
.lab-first { margin: 18px 0 0; font-size: 16px; color: var(--ink-2); }
@media (min-width: 900px) {
  .lab-hero { display: grid; grid-template-columns: 1.1fr 1fr; column-gap: 48px; align-items: end; }
  .lab-hero > .kicker, .lab-hero > .lab-title { grid-column: 1 / -1; }
  .lab-what { grid-column: 1; grid-row: 3 / span 3; align-self: start; margin-top: 26px; }
  .lab-hero > .kt-lede, .lab-meter, .lab-first { grid-column: 2; }
}

/* ---------- the course: one card per activity ---------- */
.course { max-width: var(--max); margin: 0 auto; padding: 0 var(--gutter); }
.acts { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: none; }
@media (min-width: 760px) { .acts { grid-template-columns: 1fr 1fr; gap: 16px; } }
@media (min-width: 1100px) { .acts { grid-template-columns: repeat(3, 1fr); } }
.acard { --c: var(--card); }
.c-lime { --c: var(--lime); } .c-sky { --c: var(--sky); } .c-peach { --c: var(--peach); }
.c-mint { --c: var(--mint); } .c-pink { --c: var(--pink); } .c-tang { --c: color-mix(in srgb, var(--tang) 34%, var(--card)); }
.ac-link {
  position: relative; display: grid; grid-template-columns: auto 1fr; grid-template-rows: 1fr auto; gap: 10px 14px; height: 100%;
  padding: 18px 18px 16px; border: 2px solid var(--ink); border-radius: var(--r-m); background: var(--card);
  text-decoration: none; overflow: hidden;
  transition: transform .3s var(--ease-spring), box-shadow .3s, background-color .2s;
}
.ac-link::before { content: ""; position: absolute; inset: 0 auto 0 0; width: 8px; background: var(--c); border-right: 2px solid var(--ink); }
.ac-link:hover, .ac-link:focus-visible { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.ac-link:active { transform: translate(1px, 1px); box-shadow: none; }
.ac-n { padding-left: 4px; font-family: var(--f-mono); font-size: 14px; color: var(--ink-2); }
.ac-body { display: grid; gap: 6px; align-content: start; }
.ac-name { font-size: clamp(25px, 3vw, 30px); font-weight: 800; letter-spacing: -.03em; line-height: 1.02; }
.ac-teaser { font-size: 16px; line-height: 1.45; color: var(--ink-2); }
.ac-meta { font-family: var(--f-mono); font-size: 12.5px; color: var(--ink-2); }
.ac-foot { grid-column: 1 / -1; display: flex; justify-content: space-between; align-items: center; gap: 10px; padding-top: 12px; border-top: 1.5px dashed var(--hair); }
.ac-status { font-family: var(--f-mono); font-size: 13px; padding: 4px 9px; border-radius: 999px; border: 1.5px dashed var(--ink-2); color: var(--ink-2); }
.ac-go { font-weight: 800; font-size: 17px; }
.ac-go span { display: inline-block; transition: transform .3s var(--ease-spring); }
.ac-link:hover .ac-go span { transform: translateX(5px); }
.s-going .ac-status { border: 1.5px solid var(--ink); background: var(--sky); color: var(--ink); }
.s-done .ac-link { background: var(--c); }
.s-done .ac-link::before { display: none; }
.s-done .ac-teaser, .s-done .ac-meta, .s-done .ac-n { color: var(--ink); opacity: .78; }
.s-done .ac-status { border: 2px solid var(--ink); background: var(--ink); color: var(--paper); }
.up-next .ac-link { box-shadow: var(--shadow-hard); }
.up-next .ac-go { color: var(--blue); }

/* ---------- the player: one activity, one chapter ---------- */
.player { max-width: var(--max); margin: 0 auto; padding: 8px var(--gutter) 40px; }
.player[hidden], .course-view[hidden], .act[hidden], .ch[hidden], .pl-nav[hidden], .pl-done[hidden] { display: none; }
.player { --c: var(--lime); }
.player[data-c="sky"] { --c: var(--sky); } .player[data-c="peach"] { --c: var(--peach); } .player[data-c="mint"] { --c: var(--mint); }
.player[data-c="pink"] { --c: var(--pink); } .player[data-c="tang"] { --c: color-mix(in srgb, var(--tang) 34%, var(--card)); }
.pl-bar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 8px 14px; }
.pl-back { min-height: 44px; padding: 0 14px; border: 1.5px solid var(--ink); border-radius: 999px; background: var(--card); font-weight: 700; font-size: 15px; }
.pl-back:hover { background: var(--lime); }
.pl-where { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.pl-where b { color: var(--ink); font-weight: 500; }
.pl-head { margin: 22px 0 8px; padding: 22px 20px 18px; border: 2px solid var(--ink); border-radius: var(--r-l); background: var(--c); }
.pl-title { margin: 0; font-size: clamp(38px, 7.5vw, 76px); font-weight: 800; letter-spacing: -.045em; line-height: .95; }
.pl-title:focus { outline: none; }
.pl-steps { list-style: none; margin: 18px 0 0; padding: 0; display: flex; flex-wrap: wrap; gap: 6px; }
.pl-step { display: grid; place-items: center; width: 44px; height: 44px; border-radius: 50%; border: 2px solid var(--ink); background: var(--card); font-family: var(--f-mono); font-size: 15px; transition: transform .2s var(--ease-spring); }
.pl-step.past { background: var(--ink); color: var(--paper); }
.pl-step.on { background: var(--blue); border-color: var(--ink); color: #fff; transform: scale(1.08); }
.pl-step:disabled { border-style: dashed; background: transparent; color: var(--ink-2); cursor: not-allowed; }
.pl-step:not(:disabled):not(.on):hover { transform: translateY(-2px); }

.ch { padding: 26px 0 0; animation: swap .45s var(--ease-out); }
.ch > * + * { margin-top: 20px; }
.ch-k { margin: 0; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.ch-title { margin: 6px 0 0; font-size: clamp(30px, 5vw, 48px); font-weight: 800; letter-spacing: -.035em; line-height: 1.02; max-width: 22ch; }
.ch-title:focus { outline: none; }
.ch-k + .ch-title { margin-top: 6px; }
.story { max-width: 62ch; }
.story p { margin: 0 0 14px; font-size: clamp(18px, 2vw, 20px); line-height: 1.6; }
.story p:last-child { margin-bottom: 0; }
.story b { font-weight: 800; }
.story-task { padding: 12px 16px; border-left: 4px solid var(--blue); background: var(--card); border-radius: 0 12px 12px 0; font-weight: 600; }
.pull { padding: 18px 0 4px; font-family: var(--f-serif); font-size: clamp(28px, 4vw, 40px) !important; line-height: 1.15 !important; letter-spacing: -.01em; }
.pull span { display: block; margin-top: 8px; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); letter-spacing: 0; }

.pl-nav { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px; margin-top: 36px; padding-top: 18px; border-top: 2px solid var(--ink); }
.pl-nav .btn { white-space: nowrap; }
.pl-hint { margin: 0; font-size: 14.5px; color: var(--ink-2); text-align: right; }
@media (max-width: 599px) {
  .pl-nav { grid-template-columns: 1fr 1fr; }
  .pl-hint { grid-column: 1 / -1; grid-row: 1; text-align: left; }
  .pl-hint:empty { display: none; }
  .pl-nav .btn { width: 100%; white-space: normal; padding: 8px 12px; }
  .pl-head { padding: 18px 16px 14px; margin-top: 16px; }
}

.pl-done { position: relative; margin-top: 30px; padding: 30px 22px; border: 2px solid var(--ink); border-radius: var(--r-l); background: var(--c); box-shadow: var(--shadow-hard); overflow: hidden; }
.pd-stamp { display: inline-block; margin: 0 0 16px; padding: 8px 16px; border: 3px solid var(--blue); border-radius: 10px; color: var(--blue); font-family: var(--f-mono); font-size: 22px; letter-spacing: .08em; text-transform: uppercase; transform: rotate(-5deg); background: var(--card); }
.pl-done.fresh .pd-stamp { animation: stamp .55s var(--ease-spring); }
.pd-title { margin: 0; font-size: clamp(32px, 5vw, 52px); font-weight: 800; letter-spacing: -.035em; line-height: 1; }
.pd-title:focus { outline: none; }
.pd-note { margin: 12px 0 22px; font-size: 18px; }

/* ---------- checks: short question sets ---------- */
.check { display: grid; gap: 12px; max-width: 900px; }
.check:empty { display: none; }
.ck-item { padding: 16px; border: 2px solid var(--ink); border-radius: var(--r-m); background: var(--card); }
.ck-item.solved { border-style: solid; background: color-mix(in srgb, var(--lime) 22%, var(--card)); }
.ck-q { margin: 0 0 12px; font-size: clamp(18px, 2vw, 20px); font-weight: 700; line-height: 1.4; }
.ck-n { display: inline-grid; place-items: center; width: 26px; height: 26px; margin-right: 10px; border-radius: 50%; background: var(--ink); color: var(--paper); font-family: var(--f-mono); font-size: 13px; font-weight: 400; vertical-align: 2px; }
.ck-opts { display: flex; flex-wrap: wrap; gap: 8px; }
.ck-opts.stack { display: grid; }
.ck-opts.stack .pick { text-align: left; border-radius: 12px; padding: 10px 14px; line-height: 1.4; }
.ck-opts .pick:disabled { opacity: 1; cursor: default; }
.ck-opts .pick.wrong { text-decoration: line-through; text-decoration-color: var(--tang); opacity: .7; }
.ck-opts .pick.right::before { content: "✓ "; color: var(--blue); font-weight: 800; }
.ck-item.solved .pick:not(.right) { opacity: .5; }
.ck-fb { margin: 10px 0 0; font-size: 15.5px; line-height: 1.5; color: var(--ink-2); }
.ck-fb:empty { display: none; }
.ck-fb b { color: var(--ink); }
.ck-fb.ok b { color: var(--blue); }
.ck-score { margin: 4px 0 0; font-family: var(--f-mono); font-size: 14px; }
.ck-score b { font-family: var(--f-display); font-size: 22px; color: var(--blue); }
.hf-card { display: grid; gap: 4px; padding: 10px 12px; border: 1.5px solid var(--ink); border-radius: 12px; background: var(--paper); }
.hf-card b { font-family: var(--f-mono); font-weight: 500; font-size: 17px; }
.hf-card span { font-size: 14.5px; font-weight: 400; color: var(--ink-2); }

/* a bench: the experiment on the left, its readout on the right */
.bench { display: grid; gap: 14px; }
.bench-main, .bench-side { min-width: 0; padding: 18px 16px; border: 2px solid var(--ink); border-radius: var(--r-l); background: var(--card); }
.bench-side { background: var(--paper-2); border-style: dashed; display: grid; gap: 12px; align-content: start; }
@media (min-width: 900px) {
  .bench { grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr); gap: 20px; align-items: start; }
  .bench-main { padding: 28px; box-shadow: var(--shadow-hard); }
  .bench-side { padding: 22px; position: sticky; top: 84px; }
}
.side-l { margin: 0; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.side-meta { color: var(--ink-2); }
.side-note { margin: 0; font-size: 15.5px; line-height: 1.5; }
.side-note b { font-weight: 800; }
.xp-count { font-family: var(--f-mono); font-size: 14px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.player .fine, .course-view .fine { font-size: 13px; }
.btn:disabled { background: var(--paper-2); color: var(--ink-2); box-shadow: none; cursor: default; }

/* Key Terms used in each experiment */
.words { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 22px; }
.words-l { width: 100%; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.word-chip {
  display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px;
  border: 1.5px dashed var(--ink); border-radius: 999px; background: transparent;
  font-weight: 700; font-size: 15px; text-decoration: none;
  transition: transform .2s var(--ease-spring), background .2s;
}
.word-chip:hover { background: var(--card); transform: translateY(-2px); border-style: solid; }
.wc-s { font-family: var(--f-mono); font-size: 11px; font-weight: 400; color: var(--ink-2); }
.word-chip.got { border-style: solid; background: var(--lime); }
.word-chip.got .wc-s { color: var(--ink); }
.word-chip.got .wc-s::before { content: "✓ "; color: var(--blue); }

/* outside tool doorways */
.door {
  display: grid; grid-template-columns: 96px 1fr auto; gap: 14px; align-items: center;
  margin-top: 18px; padding: 12px; border: 2px solid var(--ink); border-radius: var(--r-m);
  background: var(--card); text-decoration: none;
  transition: transform .25s var(--ease-spring), box-shadow .25s;
}
.door:hover, .door:focus-visible { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.door img { width: 96px; height: 72px; object-fit: cover; border-radius: 10px; border: 1.5px solid var(--ink); display: block; }
.door-txt { display: grid; gap: 2px; min-width: 0; }
.door-txt b { font-size: 21px; letter-spacing: -.02em; line-height: 1.1; }
.door-txt > span:last-child { font-size: 14.5px; color: var(--ink-2); line-height: 1.4; }
.door-go { font-size: 26px; font-weight: 800; padding-right: 6px; transition: transform .3s var(--ease-spring); }
.door:hover .door-go { transform: translate(3px, -3px); }
@media (max-width: 520px) { .door { grid-template-columns: 1fr auto; } .door img { grid-column: 1 / -1; width: 100%; height: 130px; } }
@media (min-width: 900px) { .door { max-width: 820px; grid-template-columns: 180px 1fr auto; padding: 14px 18px 14px 14px; } .door img { width: 180px; height: 104px; } }

/* =========================================================
   1 · BARDIWAC
   ========================================================= */
.bard { display: grid; gap: 16px; }
.bard-word { margin: 0; font-family: var(--f-serif); font-style: italic; font-size: clamp(56px, 13vw, 104px); line-height: .9; letter-spacing: -.01em; color: var(--blue); }
.bard-clues { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.bard-clues:empty { display: none; }
.bc { display: grid; grid-template-columns: 30px 1fr; gap: 10px; align-items: baseline; padding: 12px 14px; border-radius: 14px; background: var(--paper-2); font-size: clamp(17px, 2vw, 20px); line-height: 1.4; }
.bc-n { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.bc b { background: var(--lime); padding: 0 .15em; border-radius: 5px; }
.bc-new { animation: swap .45s var(--ease-out); }
.bard-ask { padding: 14px; border: 1.5px dashed var(--ink); border-radius: 14px; }
.bard-ask[hidden] { display: none; }
.bard-q { margin: 0 0 10px; font-weight: 700; }

.trail { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.trail li { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 10px; padding: 8px 12px; border-radius: 10px; background: var(--card); border: 1.5px solid var(--ink); }
.trail .trail-empty { border-style: dashed; background: transparent; color: var(--ink-2); font-size: 15px; }
.tr-n { font-family: var(--f-mono); font-size: 12px; color: var(--ink-2); min-width: 56px; }
.tr-tag { font-family: var(--f-mono); font-size: 11px; padding: 1px 6px; border-radius: 5px; background: var(--sky); }
.trail li.right { background: var(--lime); }
.trail li.wrong b { text-decoration: line-through; text-decoration-color: var(--tang); text-decoration-thickness: 2px; }
.reveal-card { padding: 14px 16px; border-radius: 14px; background: var(--ink); color: var(--paper); animation: swap .45s var(--ease-out); }
.reveal-card[hidden] { display: none; }
.reveal-card .side-l { color: var(--lime); }
.reveal-h { margin: 4px 0 8px; font-size: 24px; font-weight: 800; letter-spacing: -.02em; line-height: 1.1; }
.reveal-card p:last-child { margin: 0; font-size: 15.5px; line-height: 1.5; }

/* =========================================================
   2 · PREDICT
   ========================================================= */
.pr { display: grid; gap: 14px; }
.pr-sentence { margin: 0; font-size: clamp(26px, 4.2vw, 40px); font-weight: 700; letter-spacing: -.025em; line-height: 1.18; min-height: 2.4em; }
.pr-sentence .pw { display: inline; background: color-mix(in srgb, var(--lime) 70%, transparent); border-radius: 6px; padding: 0 .1em; }
.pr-sentence .w-new { display: inline; }
.pr-step { margin: 0; font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.pr-opts { display: grid; gap: 8px; }
.pr-opts[hidden], .pr-done[hidden] { display: none; }
.pr-done { padding: 14px 16px; border-radius: 14px; background: var(--ink); color: var(--paper); display: grid; gap: 12px; justify-items: start; }
.pr-done p { margin: 0; font-size: 16.5px; line-height: 1.5; }
.bench-side .btn { justify-self: start; }

/* =========================================================
   3 · N-GRAMS
   ========================================================= */
.ng { display: grid; gap: 14px; }
.ng-chain { margin: 0; font-size: clamp(26px, 4.2vw, 40px); font-weight: 700; letter-spacing: -.025em; line-height: 1.2; min-height: 1.2em; }
.cw { display: inline; }
.cw.w-new { display: inline-block; }
.ng-q { margin: 0; font-size: 16px; line-height: 1.45; }
.ng-q b { background: var(--lime); padding: 0 .2em; border-radius: 5px; }
.ng-table { display: grid; gap: 8px; }
.ng-table:empty { display: none; }
.ng-table .opt { min-height: 50px; font-size: 18px; }
.ng-table .opt::before { background: var(--sky); }
.ng-table .opt:nth-child(1)::before { background: var(--lime); }
.ng-table .opt:nth-child(n+7) { font-size: 16px; min-height: 44px; }
.ng .btn:disabled { opacity: .5; }
.ng-stranger { display: grid; gap: 8px; justify-items: start; padding-top: 14px; border-top: 1.5px dashed var(--hair); }
.ng-stranger .pick { font-size: 17px; }
.corpus { display: grid; gap: 4px; max-height: 330px; overflow-y: auto; padding: 12px 14px; border-radius: 12px; background: var(--card); border: 1.5px solid var(--ink); font-size: 15px; line-height: 1.45; }
.corpus p { margin: 0; }
.c-hit { background: var(--lime); border-radius: 4px; box-shadow: 0 0 0 1px var(--ink); }
.c-next { background: var(--sky); border-radius: 4px; }
@media (min-width: 900px) { .corpus { max-height: none; font-size: 15.5px; } }

/* =========================================================
   4 · EMBEDDING MAP
   ========================================================= */
.em-map {
  display: block; width: 100%; height: auto; aspect-ratio: 100 / 64; cursor: crosshair;
  border-radius: 14px; background-color: var(--paper);
  background-image: linear-gradient(var(--hair) 1px, transparent 1px), linear-gradient(90deg, var(--hair) 1px, transparent 1px);
  background-size: 10% 15.625%; border: 1.5px solid var(--ink);
  font-family: var(--f-display); touch-action: manipulation;
}
.em-zone { font-family: var(--f-mono); font-size: 2.2px; fill: var(--ink-2); letter-spacing: .05px; pointer-events: none; }
.em-w { cursor: pointer; outline: none; }
.em-w circle { fill: var(--card); stroke: var(--ink); stroke-width: .4; transition: r .25s var(--ease-spring), fill .2s; }
.em-w text { font-size: 2.7px; font-weight: 700; fill: var(--ink); paint-order: stroke; stroke: var(--paper); stroke-width: .7px; stroke-linejoin: round; }
.em-w:hover circle, .em-w:focus-visible circle { r: 2; fill: var(--lime); }
.em-w:focus-visible text { text-decoration: underline; }
.em-w.seen circle { fill: var(--sky); }
.em-w.is-near circle { fill: var(--lime); r: 1.9; }
.em-w[aria-pressed="true"] circle { fill: var(--blue); stroke: var(--blue); r: 2.1; }
.em-w[aria-pressed="true"] text { fill: var(--blue); }
[data-em-lines] line { stroke: var(--blue); stroke-width: .45; stroke-linecap: round; }
[data-em-lines] line.draw { stroke-dasharray: 60; stroke-dashoffset: 60; animation: drawline .6s var(--ease-out) forwards; }
.em-bard circle { fill: var(--tang); stroke: var(--ink); stroke-width: .4; }
.em-bard text { font-family: var(--f-serif); font-style: italic; font-size: 3.4px; fill: var(--ink); paint-order: stroke; stroke: var(--paper); stroke-width: .8px; }
.em-bard:not([hidden]) { animation: popin .45s var(--ease-spring); transform-box: fill-box; }
.em-bard { cursor: pointer; }
.em-h { margin: 0; font-size: 26px; font-weight: 800; letter-spacing: -.02em; }
.em-near { list-style: none; margin: 8px 0 0; padding: 0; display: grid; gap: 6px; counter-reset: n; }
.em-near li { display: flex; justify-content: space-between; gap: 10px; padding: 8px 12px; border-radius: 10px; background: var(--card); border: 1.5px solid var(--ink); }
.em-near li:first-child { background: var(--lime); }
.em-near span { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.em-out { display: grid; gap: 10px; }
.em-drop { display: grid; gap: 10px; padding-top: 12px; border-top: 1.5px dashed var(--hair); }
/* phone: bigger labels, the map is narrow */
@media (max-width: 599px) {
  .bench-map { padding: 6px; }
  .em-map { border: 0; }
  .em-w text { font-size: 3.4px; }
  .em-zone { font-size: 2.8px; }
}

/* =========================================================
   5 · EDITOR'S DESK
   ========================================================= */
.m-fine { --m: var(--mint); } .m-halluc { --m: var(--peach); } .m-bias { --m: var(--sky); } .m-syco { --m: var(--pink); }
.ed { display: grid; gap: 14px; }
.ed-tabs { display: flex; flex-wrap: wrap; gap: 8px; }
.ed-tab { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; padding: 0 14px; border: 1.5px solid var(--ink); border-radius: 999px; background: var(--card); font-weight: 700; font-size: 15px; }
.ed-tab span { font-family: var(--f-mono); font-size: 12px; font-weight: 400; color: var(--ink-2); }
.ed-tab em { font-family: var(--f-mono); font-size: 12px; padding: 1px 6px; border-radius: 5px; background: var(--lime); color: var(--ink); }
.ed-tab[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.ed-tab[aria-pressed="true"] span { color: #B9B6AE; }
.ed-prompt { padding: 12px 14px; border-radius: 12px; background: var(--paper-2); font-weight: 600; }
.ed-draft { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.ed-line { border-radius: 12px; border: 1.5px solid transparent; transition: background .2s, border-color .2s; }
.ed-line.open { border-color: var(--ink); background: var(--paper); }
.ed-s { display: block; width: 100%; text-align: left; padding: 10px 12px; border: 0; border-radius: 12px; background: none; font-size: clamp(17px, 1.9vw, 19px); line-height: 1.45; }
.ed-s:hover:not(:disabled) { background: var(--paper-2); }
.ed-s:disabled { cursor: default; color: inherit; }
.ed-line[class*=" m-"] .ed-s { background: color-mix(in srgb, var(--m) 55%, transparent); }
.ed-tag { display: inline-block; margin-left: 8px; padding: 1px 7px; border-radius: 5px; border: 1.5px solid var(--ink); background: var(--m); font-family: var(--f-mono); font-size: 11px; vertical-align: 2px; }
.ed-marks { display: flex; flex-wrap: wrap; gap: 6px; padding: 0 10px 10px; }
.ed-m { min-height: 44px; padding: 0 12px; border: 1.5px solid var(--ink); border-radius: 10px; background: var(--m); font-weight: 700; font-size: 14.5px; }
.ed-m:hover { box-shadow: 2px 2px 0 var(--ink); }
.ed-m[aria-pressed="true"] { box-shadow: inset 0 0 0 2px var(--ink); }
.ed-why { margin: 0; padding: 0 12px 10px; font-size: 15px; line-height: 1.45; color: var(--ink-2); }
.ed-why b { color: var(--ink); }
.ed-line.good .ed-why b::before { content: "✓ "; color: var(--blue); }
.ed-line.miss { border-color: var(--tang); border-style: dashed; }
.ed-line.miss .ed-why b::before { content: "✗ "; color: var(--tang); }
.ed-key { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; font-size: 14.5px; }
.ed-key li { display: flex; gap: 10px; align-items: baseline; }
.ed-key b { margin-right: 4px; }
.ed-sw { flex: none; width: 14px; height: 14px; border-radius: 4px; border: 1.5px solid var(--ink); background: var(--m); transform: translateY(2px); }
.ed-score { display: grid; gap: 8px; }
.ed-big { margin: 0; font-size: 64px; font-weight: 800; letter-spacing: -.05em; line-height: .9; color: var(--blue); }
.ed-big small { font-size: 28px; color: var(--ink-2); letter-spacing: -.02em; }

/* =========================================================
   MORE TO EXPLORE: the outside tools
   ========================================================= */
.more { padding: 70px 0 10px; border-top: 2px solid var(--ink); margin-top: 60px; scroll-margin-top: 70px; }
.tools { margin-top: 26px; display: grid; gap: 12px; }
@media (min-width: 700px) { .tools { grid-template-columns: 1fr 1fr; } }
@media (min-width: 1100px) { .tools { grid-template-columns: repeat(3, 1fr); } }
.tool {
  position: relative; display: grid; gap: 6px; align-content: start; min-height: 170px; padding: 18px 20px 20px;
  border: 2px solid var(--ink); border-radius: var(--r-m); background: var(--c); text-decoration: none;
  transition: transform .3s var(--ease-spring), box-shadow .3s;
}
.tool:hover, .tool:focus-visible { transform: translate(-3px, -3px); box-shadow: 6px 6px 0 var(--ink); }
.tool-k { font-family: var(--f-mono); font-size: 12px; }
.tool b { font-size: clamp(26px, 3vw, 32px); letter-spacing: -.03em; line-height: 1; }
.tool-d { font-size: 15.5px; line-height: 1.45; max-width: 40ch; }
.tool-go { position: absolute; top: 14px; right: 16px; font-size: 24px; font-weight: 800; transition: transform .3s var(--ease-spring); }
.tool:hover .tool-go { transform: translate(3px, -3px); }
.t-lang { --c: var(--lime); } .t-image { --c: var(--peach); } .t-train { --c: var(--sky); } .t-ethics { --c: var(--pink); }
.more + .eol { margin-top: 40px; }

/* ---------- lab report ---------- */
.lab-report { margin-bottom: 20px; font-size: 17px; gap: 8px; }
.lab-report li { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 4px 10px; padding: 10px 12px; border-radius: 12px; border: 1.5px solid var(--ink); background: var(--lime); }
.lab-report li.todo { background: var(--card); border-style: dashed; color: var(--ink); }
.lab-report li::before { display: none; }
.lab-report a { font-weight: 700; text-decoration: none; }
.lab-report a:hover { text-decoration: underline; }
.rl-s { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }

@media (prefers-reduced-motion: reduce) {
  [data-em-lines] line.draw { stroke-dasharray: none; animation: none; }
}

/* ---------- course view: outside tools and next rooms ---------- */
.course-view > .more, .course-view > .eol { max-width: var(--max); margin-left: auto; margin-right: auto; padding-left: var(--gutter); padding-right: var(--gutter); }
.course-view > .more { border-top: 0; margin-top: 50px; padding-top: 0; }
.course-view > .more::before { content: ""; display: block; height: 2px; background: var(--ink); margin-bottom: 60px; }
.course-view > .eol { border-top: 0; }

/* ---------- group chat clues ---------- */
.bc .who { display: inline-block; margin-right: 8px; padding: 0 7px; border-radius: 5px; background: var(--ink); color: var(--paper); font-family: var(--f-mono); font-size: 12px; vertical-align: 2px; }

/* ---------- temperature runs ---------- */
.roll { display: grid; gap: 16px; }
.roll-cols { display: grid; gap: 14px; }
@media (min-width: 600px) { .roll-cols { grid-template-columns: 1fr 1fr; } }
.roll-col { display: grid; gap: 6px; padding: 12px; border: 1.5px solid var(--ink); border-radius: 14px; background: var(--paper); }
.roll-row { display: grid; grid-template-columns: 52px 1fr 28px; align-items: center; gap: 8px; font-weight: 700; }
.roll-row b { font-family: var(--f-mono); font-weight: 500; text-align: right; font-variant-numeric: tabular-nums; }
.roll-bar { height: 16px; border-radius: 5px; background: var(--card); border: 1.5px solid var(--ink); overflow: hidden; }
.roll-bar i { display: block; height: 100%; background: var(--sky); transition: width .45s var(--ease-out); }
.roll-row:first-of-type .roll-bar i { background: var(--lime); }

/* ---------- counting machine stranger ---------- */
.ch .ng-stranger { border-top: 0; padding-top: 0; max-width: 62ch; }
.ch .ng-stranger .btn:disabled { opacity: 1; }

/* ---------- editor's desk ---------- */
.ed-key-big { max-width: 640px; gap: 8px; font-size: 17px; }
.ed-key-big li { padding: 10px 12px; border: 1.5px solid var(--ink); border-radius: 12px; background: color-mix(in srgb, var(--m) 45%, var(--card)); }
.ed-key .ed-sw { background: var(--m); }
.ed-total:empty { display: none; }
.ed-total b { color: var(--blue); }

/* ---------- the poisoned model ---------- */
.unpack { display: grid; gap: 14px; }
.up-steps { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.up-steps:empty { display: none; }
.up-step { display: grid; grid-template-columns: 56px 1fr; gap: 10px; align-items: baseline; padding: 12px 14px; border-radius: 14px; background: var(--paper-2); font-size: clamp(17px, 2vw, 19px); line-height: 1.4; }
.up-step.bad { background: color-mix(in srgb, var(--tang) 22%, var(--card)); outline: 2px solid var(--tang); }
.up-flag { display: block; margin-top: 6px; font-family: var(--f-mono); font-size: 12.5px; color: var(--ink); }
.up-flag::before { content: "⚠ "; color: var(--tang); }
.up-screen { min-height: 150px; padding: 14px; border-radius: 12px; background: var(--night); color: #E9E6DD; font-family: var(--f-mono); font-size: 14px; display: grid; gap: 6px; align-content: start; }
.up-screen .side-note { font-family: var(--f-display); color: #B9B6AE; }
.up-screen .up-warn { color: var(--lime); }
.up-line { margin: 0; }
.up-line b { color: var(--lime); font-weight: 500; }
.up-safe { display: grid; gap: 10px; padding: 14px; border: 2px solid var(--ink); border-radius: 14px; background: color-mix(in srgb, var(--mint) 50%, var(--card)); animation: swap .45s var(--ease-out); }
.up-safe[hidden] { display: none; }
.up-safe p { margin: 0; }
.up-nums { font-family: var(--f-mono); font-size: 13.5px; line-height: 1.7; overflow-wrap: anywhere; }

.tl { list-style: none; margin: 0; padding: 0; display: grid; gap: 0; max-width: 760px; }
.tl li { position: relative; display: grid; gap: 4px; padding: 0 0 22px 26px; border-left: 2px solid var(--ink); margin-left: 8px; }
.tl li:last-child { border-left-color: transparent; padding-bottom: 0; }
.tl li::before { content: ""; position: absolute; left: -9px; top: 2px; width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--ink); background: var(--card); }
.tl li:nth-child(odd)::before { background: var(--tang); }
.tl-d { font-family: var(--f-mono); font-size: 13px; color: var(--ink-2); }
.tl p { margin: 0; font-size: clamp(17px, 1.9vw, 19px); line-height: 1.55; }

.hf-list { margin: 0; padding: 0; list-style: none; counter-reset: hf; display: grid; gap: 8px; max-width: 760px; }
.hf-list li { counter-increment: hf; display: grid; grid-template-columns: 34px 1fr; gap: 10px; align-items: baseline; padding: 12px 14px; border: 2px solid var(--ink); border-radius: 14px; background: var(--card); font-size: 17px; line-height: 1.45; }
.hf-list li::before { content: counter(hf); display: grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--blue); color: #fff; font-family: var(--f-mono); font-size: 14px; }

@media (prefers-reduced-motion: reduce) {
  .ch, .up-safe, .pl-done.fresh .pd-stamp { animation: none; }
}