/* MiniMax experiments — shared styles. Theme via html[data-theme] (shared toggle).
 * Palette grounded in the g7-cells-01 video's own world: mint-cream ground,
 * membrane-teal = the expensive stack, mitochondria-orange = MiniMax. */
:root{
  --paper:#EFF6F1;--card:#FFFFFF;--ink:#152420;--ink2:#33463E;--muted:#5E7168;--muted2:#8A9C93;
  --line:#D8E6DD;--line2:#E7F0EA;--mint:#EAF6EE;--teal:#218D79;--teal-ink:#0E6A59;
  --orange:#DE7A31;--orange-ink:#BE5F1C;--purple:#6E5C9B;
  --good:#2E8B7A;--warn:#C77A2E;--bad:#C0473A;
  --shadow:0 1px 2px rgba(20,50,40,.05),0 8px 26px rgba(20,50,40,.06);--radius:14px;
}
html[data-theme="dark"]{
  --paper:#0E1B17;--card:#152420;--ink:#E8F2EC;--ink2:#C3D3CA;--muted:#93A79D;--muted2:#6C8177;
  --line:#243830;--line2:#1C2C26;--mint:#18291F;--teal:#4FB6A2;--teal-ink:#69C6B3;
  --orange:#EE9A54;--orange-ink:#F0A968;--purple:#A08FCB;
  --good:#5FC3B0;--warn:#E7A24F;--bad:#E0796B;
  --shadow:0 1px 2px rgba(0,0,0,.3),0 10px 30px rgba(0,0,0,.35);
}
*{box-sizing:border-box;margin:0;padding:0}
body{background:var(--paper);color:var(--ink);
  font:16px/1.55 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;-webkit-font-smoothing:antialiased}
.mono{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;font-variant-numeric:tabular-nums}
.wrap{max-width:1200px;margin:0 auto;padding:0 22px}
a{color:var(--teal-ink);text-decoration:none}
em{font-style:normal}

/* top nav */
.topnav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line)}
.topnav .inner{max-width:1200px;margin:0 auto;padding:11px 22px;display:flex;align-items:center;gap:18px}
.topnav .brand{font-weight:700;font-size:14px;letter-spacing:-.01em}
.topnav .brand span{color:var(--orange-ink)}
.topnav nav{display:flex;gap:16px;font-size:13.5px;margin-left:auto;align-items:center}
.topnav nav a{color:var(--muted)}.topnav nav a:hover{color:var(--ink)}
.topnav nav a.here{color:var(--ink);font-weight:600}
#theme-toggle{background:var(--card);color:var(--muted);border:1px solid var(--line);border-radius:8px;padding:4px 10px;cursor:pointer;font-size:13px}

/* masthead */
.mast{padding:52px 0 30px;border-bottom:1px solid var(--line)}
.crumb{font-family:ui-monospace,monospace;font-size:12.5px;color:var(--muted);margin-bottom:14px}
.crumb a{color:var(--muted)}.crumb a:hover{color:var(--ink)}
.eyebrow{font-family:ui-monospace,monospace;font-size:12px;letter-spacing:.16em;text-transform:uppercase;color:var(--muted);display:flex;gap:10px;flex-wrap:wrap}
.eyebrow .sep{color:var(--line)}
h1{font-size:clamp(28px,5vw,46px);line-height:1.05;letter-spacing:-.022em;margin:16px 0 0;text-wrap:balance;font-weight:760}
h1 em{color:var(--orange-ink)}
.dek{font-size:18px;color:var(--ink2);max-width:66ch;margin:16px 0 0;text-wrap:pretty}
.stat-strip{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-top:32px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px 16px 14px;box-shadow:var(--shadow)}
.stat .n{font-family:ui-monospace,monospace;font-size:26px;font-weight:680;letter-spacing:-.02em;line-height:1}
.stat .n.big{font-size:30px}
.stat .l{font-size:12.5px;color:var(--muted);margin-top:8px;line-height:1.35}
.stat.a .n{color:var(--teal-ink)}.stat.b .n{color:var(--orange-ink)}
.legend{display:flex;gap:18px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:14px}
.dot{width:10px;height:10px;border-radius:50%;display:inline-block;vertical-align:middle;margin-right:6px}
.d-a{background:var(--teal)}.d-b{background:var(--orange)}

section{padding:44px 0;border-bottom:1px solid var(--line)}
.sec-head{display:flex;align-items:baseline;gap:14px;margin:0 0 20px}
.sec-num{font-family:ui-monospace,monospace;font-size:13px;color:var(--muted2)}
h2{font-size:24px;letter-spacing:-.015em;margin:0;font-weight:720}
.lead{color:var(--ink2);max-width:70ch;margin:-6px 0 24px;font-size:16px}

/* ===== difficulty scorecard ===== */
.verdict{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);margin-bottom:24px}
.verdict .vhead{display:flex;align-items:baseline;gap:14px;flex-wrap:wrap;margin-bottom:6px}
.verdict .score{font-family:ui-monospace,monospace;font-size:40px;font-weight:700;color:var(--orange-ink);letter-spacing:-.03em;line-height:1}
.verdict .score small{font-size:18px;color:var(--muted);font-weight:500}
.verdict .vlabel{font-size:15px;color:var(--ink2)}
.verdict p{color:var(--ink2);font-size:15.5px;margin-top:10px;max-width:74ch;line-height:1.55}

.scorecard{width:100%;border-collapse:collapse;font-size:14.5px}
.scorecard th,.scorecard td{text-align:left;padding:12px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.scorecard th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700}
.scorecard td.dim{font-weight:650;color:var(--ink);width:20%}
.scorecard td.note{color:var(--ink2);font-size:13.5px}
.scorecard .who{font-size:12px;color:var(--muted);display:block;margin-bottom:3px;text-transform:uppercase;letter-spacing:.04em}
.dots{display:inline-flex;gap:3px;vertical-align:middle}
.dots i{width:9px;height:9px;border-radius:50%;background:var(--line);display:inline-block}
.dots.a i.on{background:var(--teal)} .dots.b i.on{background:var(--orange)}
.delta{font-family:ui-monospace,monospace;font-weight:700;font-size:13px}
.delta.up{color:var(--bad)} .delta.dn{color:var(--good)} .delta.eq{color:var(--muted)}
.tblwrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow)}

/* ===== cost ===== */
.cost-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px 20px 18px;box-shadow:var(--shadow)}
.panel h4{margin:0 0 4px;font-size:14px;font-weight:680}
.panel .sub{font-size:12.5px;color:var(--muted);margin:0 0 16px}
.crow{display:grid;grid-template-columns:132px 1fr auto;align-items:center;gap:12px;padding:5px 0}
.cname{font-size:13px;color:var(--ink2)}
.ctrack{height:8px;background:var(--line2);border-radius:5px;overflow:hidden}
.cfill{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--teal-ink));border-radius:5px}
.cfill.orange{background:linear-gradient(90deg,var(--orange),var(--orange-ink))}
.cval{font-size:13px;color:var(--ink);min-width:56px;text-align:right}
.ledger-note{font-size:13px;color:var(--muted);margin:18px 2px 0;line-height:1.5}
.big-compare{display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:20px;margin:6px 0 26px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:22px;box-shadow:var(--shadow)}
.bc{text-align:center}
.bc .amt{font-family:ui-monospace,monospace;font-size:clamp(32px,6vw,52px);font-weight:700;letter-spacing:-.03em;line-height:1}
.bc.a .amt{color:var(--teal-ink)}.bc.b .amt{color:var(--orange-ink)}
.bc .cap{font-size:13px;color:var(--muted);margin-top:10px}.bc .cap b{color:var(--ink)}
.arrow{font-family:ui-monospace,monospace;color:var(--muted2);font-size:14px;text-align:center;line-height:1.3}
.arrow .x{display:block;font-size:22px;font-weight:700;color:var(--orange-ink)}

/* ===== segment cards ===== */
.seg{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:20px;margin-bottom:20px;box-shadow:var(--shadow);
  display:grid;grid-template-columns:minmax(0,1fr) 252px;gap:22px;align-items:start}
.seg-main{min-width:0}
.seg-head{margin-bottom:16px}
.seg-id{display:flex;align-items:center;gap:8px;margin-bottom:7px;flex-wrap:wrap}
.chip{font-size:12px;font-weight:600;background:var(--mint);color:var(--teal-ink);border:1px solid var(--line);padding:2px 9px;border-radius:20px}
.tag{font-size:11px;letter-spacing:.03em;text-transform:uppercase;padding:2px 8px;border-radius:20px;font-weight:600}
.t-pres{background:rgba(110,92,155,.13);color:var(--purple)}.t-label{background:rgba(222,122,49,.13);color:var(--orange-ink)}
.costchip{margin-left:auto;display:inline-flex;align-items:center;gap:6px;font-family:ui-monospace,monospace;
  font-size:12px;background:var(--paper);border:1px solid var(--line);border-radius:20px;padding:2px 4px 2px 10px}
.costchip .ca{color:var(--teal-ink);font-weight:700}
.costchip .cb{color:var(--orange-ink);font-weight:700}
.costchip .cx{background:var(--orange);color:#fff;border-radius:20px;padding:1px 7px;font-weight:700;font-size:11px}
.seg h3{margin:0 0 12px;font-size:19px;letter-spacing:-.01em;font-weight:680}
.tl{position:relative;height:6px;background:var(--line2);border-radius:4px}
.tl-fill{position:absolute;top:0;height:100%;background:var(--orange);border-radius:4px;min-width:4px}
.tl-meta{font-size:11.5px;color:var(--muted2);margin-top:6px}
.frames{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.fr{margin:0}
.fr img,.fr .fr-vid{width:100%;display:block;border-radius:10px;background:var(--mint);border:1px solid var(--line);aspect-ratio:9/16;object-fit:cover}
.fr-a img,.fr-a .fr-vid{box-shadow:inset 0 0 0 2px var(--teal)}.fr-b img,.fr-b .fr-vid{box-shadow:inset 0 0 0 2px var(--orange)}
.frames-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;margin-top:12px}
.sync-play{background:var(--card);color:var(--ink);border:1px solid var(--line);border-radius:8px;
  padding:6px 13px;font:inherit;font-size:12.5px;font-weight:650;cursor:pointer;flex:0 0 auto}
.sync-play:hover{border-color:var(--orange);color:var(--orange-ink)}
.fa-hint{font-size:11.5px;color:var(--muted2)}
.fr figcaption{font-size:12px;color:var(--muted);margin-top:8px;display:flex;align-items:center}
.narr{font-size:15px;color:var(--ink2);font-style:italic;margin:16px 2px 4px;line-height:1.5;text-wrap:pretty}
.cmp{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:14px}
.col{border:1px solid var(--line);border-radius:11px;padding:14px;background:var(--paper)}
.col-a{border-top:3px solid var(--teal)}.col-b{border-top:3px solid var(--orange)}
.col-label{font-size:11px;text-transform:uppercase;letter-spacing:.09em;font-weight:700;color:var(--muted);margin-bottom:11px}
.kv{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border-top:1px solid var(--line2);font-size:13px}
.kv:first-of-type{border-top:0}
.kv span{color:var(--muted);flex:0 0 auto}
.kv b{font-weight:600;text-align:right;color:var(--ink)}
.kv b.sm{font-size:12px;font-weight:500;color:var(--ink2)}
.kv b.subj{font-weight:500;font-size:12.5px;color:var(--ink2);line-height:1.4;max-width:78%}
.metric{margin-top:10px}
.metric-head{display:flex;justify-content:space-between;font-size:12.5px;color:var(--muted)}
.metric-head b{color:var(--ink)}.metric-head b.heavy{color:var(--orange-ink)}.metric-head b.muted2{color:var(--muted2);font-weight:500}
.attbar{height:7px;background:var(--line2);border-radius:5px;margin-top:6px;overflow:hidden}
.attbar span{display:block;height:100%;background:linear-gradient(90deg,var(--teal),var(--orange));border-radius:5px}

/* ===== collapsible detail ===== */
details.deep{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px}
details.deep>summary{cursor:pointer;list-style:none;font-size:12.5px;font-weight:650;color:var(--teal-ink);
  display:flex;align-items:center;gap:7px;user-select:none}
details.deep>summary::-webkit-details-marker{display:none}
details.deep>summary::before{content:"▸";font-size:11px;transition:transform .15s;color:var(--muted)}
details.deep[open]>summary::before{transform:rotate(90deg)}
details.deep>summary:hover{color:var(--orange-ink)}
.deepbody{margin-top:12px;display:grid;grid-template-columns:1fr 1fr;gap:14px}
.deepcol h5{font-size:11px;text-transform:uppercase;letter-spacing:.07em;margin:0 0 8px}
.deepcol.a h5{color:var(--teal-ink)}.deepcol.b h5{color:var(--orange-ink)}
.spec{font-size:12px;color:var(--ink2);display:grid;gap:4px}
.spec .r{display:flex;justify-content:space-between;gap:10px;border-bottom:1px solid var(--line2);padding-bottom:3px}
.spec .r span{color:var(--muted)} .spec .r b{font-weight:600;text-align:right}
.gates{display:flex;flex-wrap:wrap;gap:5px;margin-top:8px}
.gate{font-size:11px;font-family:ui-monospace,monospace;padding:2px 7px;border-radius:6px;border:1px solid var(--line)}
.gate.ok{color:var(--good);border-color:color-mix(in srgb,var(--good) 40%,var(--line))}
.gate.no{color:var(--bad);border-color:color-mix(in srgb,var(--bad) 40%,var(--line))}
.tt{font-family:ui-monospace,monospace;font-size:11.5px;line-height:1.55;color:var(--ink2);white-space:pre-wrap;
  background:var(--card);border:1px solid var(--line2);border-radius:9px;padding:11px;margin-top:8px;max-height:260px;overflow:auto}
.reason{font-size:12px;color:var(--muted);font-style:italic;margin-top:8px;line-height:1.5}
@media (max-width:640px){.deepbody{grid-template-columns:1fr}}

/* ===== experiment index cards ===== */
.exp-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.expcard{position:relative;display:flex;gap:16px;background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:16px;box-shadow:var(--shadow);text-decoration:none;color:inherit;transition:transform .15s,border-color .15s,background .15s}
.expcard:hover{transform:translateY(-3px);border-color:var(--muted);background:var(--paper)}
.expcard.soon{opacity:.62;pointer-events:none}
.expcard .thumbs{flex:0 0 auto;display:flex;gap:4px}
.expcard .thumbs img{width:44px;height:78px;object-fit:cover;border-radius:6px;border:1px solid var(--line);background:var(--mint)}
.expcard .thumbs .ph{width:44px;height:78px;border-radius:6px;border:1px dashed var(--line);background:var(--paper);display:grid;place-items:center;color:var(--muted2);font-size:20px}
.expcard .body{min-width:0}
.expcard .body .st{font-size:11px;text-transform:uppercase;letter-spacing:.06em;font-weight:700;color:var(--orange-ink)}
.expcard .body .st.plan{color:var(--muted2)}
.expcard .body h3{font-size:19px;margin:4px 0 4px;letter-spacing:-.01em}
.expcard .body p{font-size:13.5px;color:var(--muted);line-height:1.45}
.expcard .body .row{display:flex;flex-wrap:wrap;gap:8px;margin-top:10px}
.expcard .body .row span{font-size:12px;color:var(--muted);background:var(--paper);border:1px solid var(--line);border-radius:999px;padding:2px 9px}
.expcard .body .row span b{color:var(--ink)}
.expcard.soon .thumbs .ph{grid-column:span 1}

/* prompt panels + matrix (experiment page) */
.two{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.prompt-box{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:18px 20px;box-shadow:var(--shadow)}
.prompt-box h4{margin:0 0 3px;font-size:13px;text-transform:uppercase;letter-spacing:.07em;color:var(--muted)}
.prompt-box.a h4{color:var(--teal-ink)}.prompt-box.b h4{color:var(--orange-ink)}
.matrix{width:100%;border-collapse:collapse;font-size:14px}
.matrix th,.matrix td{text-align:left;padding:11px 12px;border-bottom:1px solid var(--line);vertical-align:top}
.matrix th{font-size:12px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);font-weight:700}
.matrix td:first-child{color:var(--muted);font-weight:600;width:22%}
.matrix .ta{color:var(--teal-ink)}.matrix .tb{color:var(--orange-ink)}

ul.play{list-style:none;padding:0;margin:0;display:grid;gap:12px}
ul.play li{background:var(--card);border:1px solid var(--line);border-left:3px solid var(--orange);border-radius:10px;padding:14px 16px;box-shadow:var(--shadow)}
ul.play li b{color:var(--ink)}ul.play li p{margin:5px 0 0;color:var(--ink2);font-size:14.5px}
.limits li{border-left-color:var(--purple)}

/* ===== per-segment comments (side rail) ===== */
.seg-comments{border-left:1px solid var(--line);padding-left:20px;min-width:0;align-self:stretch}
.cm-head{display:flex;align-items:center;justify-content:space-between;font-size:11px;text-transform:uppercase;
  letter-spacing:.07em;font-weight:700;color:var(--muted);margin-bottom:12px}
.cm-count{font-family:ui-monospace,monospace;font-size:11px;color:#fff;background:var(--orange);border-radius:999px;
  min-width:18px;height:18px;padding:0 6px;display:inline-flex;align-items:center;justify-content:center}
.cm-count:empty{display:none}
.cm-list{display:flex;flex-direction:column;gap:12px}
.cm{font-size:13px;line-height:1.45}
.cm-meta{display:flex;align-items:baseline;gap:6px}
.cm .who{font-weight:650;color:var(--ink)}
.cm .when{color:var(--muted2);font-size:11px}
.cm .body{color:var(--ink2);margin-top:2px;white-space:pre-wrap;word-wrap:break-word}
.cm-empty{color:var(--muted2);font-size:12.5px;font-style:italic}
.cm-composer{margin-top:14px;border-top:1px dashed var(--line);padding-top:12px}
.cm-input{width:100%;resize:vertical;min-height:56px;font:inherit;font-size:13px;line-height:1.45;color:var(--ink);
  background:var(--paper);border:1px solid var(--line);border-radius:9px;padding:9px}
.cm-input:focus{outline:2px solid var(--orange);outline-offset:1px;border-color:transparent}
.cm-as{display:flex;align-items:center;justify-content:space-between;gap:8px;margin-top:8px;font-size:11.5px;color:var(--muted)}
.cm-as b{color:var(--ink);font-weight:650}
.cm-post{background:var(--orange);color:#fff;border:0;border-radius:8px;padding:6px 15px;font-size:12.5px;font-weight:650;cursor:pointer;flex:0 0 auto}
.cm-post:hover{background:var(--orange-ink)}
.cm-post:disabled{opacity:.55;cursor:not-allowed}
.cm-note{font-size:11.5px;color:var(--muted2);line-height:1.45}
.cm-err{color:var(--bad);margin-top:8px}
@media (max-width:900px){
  .seg{grid-template-columns:1fr}
  .seg-comments{border-left:0;border-top:1px solid var(--line);padding-left:0;padding-top:18px}
}

footer.pg{padding:36px 0 70px;color:var(--muted);font-size:13px}
footer.pg .mono{color:var(--muted2)}

@media (max-width:720px){
  .stat-strip{grid-template-columns:1fr 1fr}.cost-grid,.two,.exp-grid{grid-template-columns:1fr}
  .big-compare{grid-template-columns:1fr;gap:8px}.arrow .x{transform:rotate(90deg)}
  .cmp{grid-template-columns:1fr}.crow{grid-template-columns:104px 1fr auto}.topnav nav{gap:12px}
}
@media (prefers-reduced-motion:no-preference){.cfill,.attbar span,.tl-fill{transition:width .6s ease}}