/* GENERATED by lab/build.mjs from lab/css/*.css — edit those, then `npm run build`. */
/* ---- lab/css/base.css ---- */
/* Lab base — shared by every 3D experience. Experience-specific rules live in
   their own files (labx.css = exploded system, labm.css = mini-split lab). */
.lab-canvas{position:absolute;inset:0;width:100%;height:100%;display:block;outline:none;touch-action:pan-y}
.lab-labels{position:absolute;inset:0;pointer-events:none;z-index:2}
.lab-leaders{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.lab-leader{fill:none;stroke:#ffffffa0;stroke-width:1.5;transition:opacity .25s}
.lab-dot{fill:var(--yellow);stroke:#0b1120;stroke-width:2;transition:opacity .25s}
.lab-label{position:absolute;left:0;top:0;will-change:transform,opacity;
  background:#0b1120d9;border:1px solid #ffffff22;border-radius:12px;padding:8px 12px;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 12px 30px -12px #000a;
  color:#fff;font:700 14px/1.25 var(--out);max-width:240px;transition:opacity .3s}
.lab-label b{display:block;font:700 14px/1.25 var(--out)}
.lab-label span{display:block;margin-top:3px;font:500 12.5px/1.4 var(--out);color:#ffffffb8}
.lab-label[data-energy="hot"]{border-color:#ec489955}
.lab-label[data-energy="cold"]{border-color:#06b6d455}
@media (max-width:700px){.lab-label{padding:6px 10px;font-size:13px}.lab-label span{display:none}}
/* Live-only / fallback-only helpers */
html:not(.lab-on) .lab-live-only{display:none!important}
html.lab-on .lab-fallback-only{display:none!important}

/* ---- lab/css/labd.css ---- */
/* Flashlight Inspection (duct-cleaning) — everything namespaced .labd. Card = navy "lab" panel,
   matching the other lab experiences (.labm/.labx) so it reads as one product. */
.labd{position:relative;max-width:900px;margin:0 auto;padding:clamp(12px,1.8vw,20px);border-radius:26px;color:#fff;
  background:radial-gradient(800px 380px at 85% -10%,#ec48991c,transparent 62%),radial-gradient(650px 380px at -6% 108%,#06b6d41c,transparent 60%),linear-gradient(160deg,#0f172a 0%,#131c38 58%,#0b1120 100%);
  border:1px solid #ffffff14;box-shadow:0 40px 84px -40px #0f172ad9,0 2px 0 #ffffff0d inset}
.labd *{box-sizing:border-box}
.labd button{font-family:var(--out)}

/* ---------- stage + overlays ---------- */
.labd-frame{position:relative;width:100%;aspect-ratio:16/10;max-height:70vh;min-height:300px;border-radius:18px;overflow:hidden;background:#05070c;isolation:isolate;touch-action:pan-y;-webkit-tap-highlight-color:transparent}
.labd-stage{position:absolute;inset:0}
.labd-stage .lab-canvas{cursor:crosshair}

.labd-hud{position:absolute;inset:0;z-index:3;display:flex;justify-content:space-between;align-items:flex-start;padding:12px;pointer-events:none}
.labd-meter{pointer-events:none;display:grid;justify-items:center;padding:8px 10px 9px;border-radius:16px;background:#0b1120c4;border:1px solid #ffffff1f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 14px 30px -16px #000c;width:84px}
.labd-meter-ring{width:52px;height:52px;transform:rotate(-90deg)}
.labd-meter-ring circle{fill:none;stroke-width:6}
.labd-meter-track{stroke:#ffffff22}
.labd-meter-fill{stroke:var(--cyan);stroke-linecap:round;transition:stroke-dashoffset .25s linear,stroke .4s}
.labd[data-labd-done] .labd-meter-fill{stroke:#34d399}
.labd-meter-num{margin-top:-40px;font:800 19px/1 var(--frau);font-variant-numeric:tabular-nums;display:flex;align-items:baseline;gap:1px}
.labd-meter-num small{font:700 10px/1 var(--out);color:#ffffffa0}
.labd-meter-label{margin-top:2px;font:700 9px/1 var(--fred);letter-spacing:.16em;text-transform:uppercase;color:#ffffff90}

.labd-clean-btn{pointer-events:auto;min-height:44px;padding:10px 18px;border-radius:99px;border:1px solid #ffffff30;background:#ffffff12;color:#fff;font:700 13.5px/1 var(--out);cursor:pointer;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);transition:background .2s,transform .2s,border-color .2s;white-space:nowrap}
.labd-clean-btn:hover{background:#ffffff22;border-color:#fbbf24}
.labd-clean-btn:active{transform:scale(.96)}
.labd-clean-btn:disabled{opacity:.6;cursor:default}
.labd-clean-btn:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}

/* "Let the llama finish" — offers to auto-finish once someone's clearly engaged (lab.js,
   FINISH_BTN_AT, ~38%). Fades in bottom-centre over the stage and stays until clicked or the
   reveal fires: calm pacing means nothing here disappears on its own after a timed flash. */
.labd-finish-btn{position:absolute;left:50%;bottom:14px;z-index:3;pointer-events:auto;
  transform:translate(-50%,8px);opacity:0;transition:opacity .5s ease,transform .5s ease,box-shadow .2s;
  display:inline-flex;align-items:center;gap:7px;min-height:44px;padding:10px 20px;border-radius:99px;
  border:1px solid #ffffff30;background:linear-gradient(135deg,var(--pink),var(--cyan));color:#fff;
  font:800 13.5px/1 var(--out);white-space:nowrap;cursor:pointer;box-shadow:0 14px 30px -16px #000c}
.labd-finish-btn.in{opacity:1;transform:translate(-50%,0)}
.labd-finish-btn.in:hover{transform:translate(-50%,-2px);box-shadow:0 18px 34px -16px #000d}
.labd-finish-btn.in:active{transform:translate(-50%,0) scale(.96)}
.labd-finish-btn:focus-visible{outline:2px solid var(--yellow);outline-offset:2px}

/* :not([hidden]) — plain `.labd-tap{display:flex}` would out-cascade the UA [hidden]{display:none}
   rule (same specificity, author origin wins) and leave the prompt visible — and worse, still
   hit-testable, silently swallowing every pointer event meant for the canvas underneath it. */
.labd-tap:not([hidden]){display:flex}
.labd-tap{position:absolute;inset:0;z-index:4;flex-direction:column;align-items:center;justify-content:center;gap:4px;text-align:center;background:#0b1120b0;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px);cursor:pointer;opacity:1;transition:opacity .38s ease}
.labd-tap-ic{font-size:34px;filter:drop-shadow(0 4px 10px #000a)}
.labd-tap b{font:800 16px/1.3 var(--out);color:#fff}
.labd-tap small{font:600 12.5px/1.4 var(--out);color:#ffffffb0}
.labd-tap-out{opacity:0;pointer-events:none;cursor:default}
.labd-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- before/after reveal (eases in over ~1.2s — not a snap) ---------- */
.labd-reveal{margin-top:16px;opacity:0;transform:translateY(14px);transition:opacity 1.2s ease,transform 1.2s ease}
.labd-reveal.in{opacity:1;transform:none}
.labd-compare{position:relative;width:100%;aspect-ratio:5/3;max-height:280px;border-radius:16px;overflow:hidden;border:1px solid #ffffff22;box-shadow:0 20px 44px -22px #000c}
.labd-compare canvas{position:absolute;inset:0;width:100%;height:100%;display:block}
.labd-compare-after{clip-path:inset(0 0 0 45%)}
.labd-compare-tag{position:absolute;top:10px;z-index:2;padding:5px 11px;border-radius:99px;font:700 10.5px/1 var(--fred);letter-spacing:.12em;text-transform:uppercase;background:#0b1120c4;border:1px solid #ffffff2a;color:#fff}
.labd-compare-tag-before{left:10px}
.labd-compare-tag-after{right:10px}
.labd-compare-slider{position:absolute;inset:0;width:100%;height:100%;margin:0;appearance:none;-webkit-appearance:none;background:transparent;cursor:ew-resize;z-index:3}
.labd-compare-slider::-webkit-slider-runnable-track{background:transparent;height:100%}
.labd-compare-slider::-moz-range-track{background:transparent;height:100%;border:0}
.labd-compare-slider::-webkit-slider-thumb{-webkit-appearance:none;width:6px;height:100%;border-radius:3px;background:#fff;box-shadow:0 0 0 2px #0b1120,0 0 16px #000a;cursor:ew-resize}
.labd-compare-slider::-moz-range-thumb{width:6px;height:1000px;border:0;border-radius:3px;background:#fff;box-shadow:0 0 0 2px #0b1120,0 0 16px #000a;cursor:ew-resize}

.labd-cta{margin-top:16px;padding:clamp(16px,2.2vw,22px);border-radius:18px;background:#ffffff08;border:1px solid #ffffff14;text-align:center}
.labd-cta-q{margin:0 0 14px;font:800 clamp(18px,2.2vw,22px)/1.25 var(--frau);color:#fff}
.labd-cta-row{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}

/* ---------- failure -> show the static fallback ---------- */
html.lab-on .labd.lab-failed{display:none}
html.lab-on .labd.lab-failed~.lab-fallback-only{display:block!important}

/* ---------- reduced motion: skip WebGL, show the same static fallback ---------- */
.labd.labd-reduced{display:none}
html.lab-on .labd-fallback.labd-reduced-show{display:block!important}

/* ---------- static fallback (no WebGL / reduced motion / ?lab=off) — real HTML, no canvas ---------- */
.labd-fallback{max-width:900px;margin:0 auto;padding:clamp(20px,3vw,30px);border-radius:26px;color:#fff;
  background:linear-gradient(160deg,#0f172a 0%,#131c38 58%,#0b1120 100%);border:1px solid #ffffff14}
.labd-fb-compare{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.labd-fb-panel{position:relative;padding:20px 16px 18px;border-radius:16px;min-height:160px;display:flex;flex-direction:column;justify-content:flex-end}
.labd-fb-before{background:linear-gradient(160deg,#5b5347,#3a352c);box-shadow:inset 0 0 40px #00000066}
.labd-fb-after{background:linear-gradient(160deg,#e7eaed,#a9afb5)}
.labd-fb-tag{position:absolute;top:10px;left:10px;padding:5px 11px;border-radius:99px;font:700 10.5px/1 var(--fred);letter-spacing:.12em;text-transform:uppercase;background:#0b1120c4;border:1px solid #ffffff2a;color:#fff}
.labd-fb-before p{font:600 14px/1.5 var(--out);color:#fff}
.labd-fb-after p{font:600 14px/1.5 var(--out);color:#1f2937}
.labd-fb-note{margin:16px 0 0;font:500 14.5px/1.6 var(--out);color:#ffffffb8;text-align:center}
.labd-fallback .labd-cta-row{margin-top:18px}

/* ---------- tablets / phones ---------- */
@media (max-width:760px){
  .labd,.labd-fallback{border-radius:20px}
  .labd-frame{aspect-ratio:4/5;max-height:none}
  .labd-fb-compare{grid-template-columns:1fr}
}
@media (max-width:480px){
  .labd-meter{width:72px;padding:6px 8px 7px}
  .labd-meter-ring{width:44px;height:44px}
  .labd-meter-num{margin-top:-34px;font-size:16px}
  .labd-clean-btn{padding:9px 14px;font-size:12.5px}
  .labd-finish-btn{padding:9px 16px;font-size:12.5px;bottom:10px}
  .labd-cta-row .btn{width:100%;justify-content:center}
}
@media (prefers-reduced-motion:reduce){
  .labd *{transition:none!important}
}

/* ---- lab/css/labi.css ---- */
/* IAQ Lab ("Watch the Air Get Cleaned") — everything namespaced .labi.
   Card = navy "lab" panel, matching the Comfort Lab (labm) so the two feel
   like one product across the site. */
.labi{position:relative;max-width:1040px;margin:0 auto;padding:clamp(12px,1.8vw,22px);border-radius:28px;color:#fff;
  background:radial-gradient(900px 420px at 88% -12%,#8fb8ff22,transparent 62%),radial-gradient(700px 420px at -8% 112%,#caa6ff22,transparent 60%),linear-gradient(160deg,#0f172a 0%,#131c38 58%,#0b1120 100%);
  border:1px solid #ffffff14;box-shadow:0 44px 90px -44px #0f172ad9,0 2px 0 #ffffff0d inset}
.labi *{box-sizing:border-box}
.labi button{font-family:var(--out)}

/* ---------- mode toggle ---------- */
.labi-bar{display:flex;justify-content:center;margin:0 auto 12px;gap:4px;padding:4px;border-radius:99px;
  background:#ffffff0d;border:1px solid #ffffff1c;width:fit-content;max-width:100%}
.labi-bar button{min-height:46px;padding:10px 20px;border:0;border-radius:99px;background:transparent;color:#ffffffb8;
  font:700 14px/1.15 var(--out);cursor:pointer;transition:background .25s,color .25s,box-shadow .25s;white-space:nowrap}
.labi-bar button:hover{color:#fff;background:#ffffff12}
.labi-bar button[aria-pressed=true]{color:var(--navy);background:#fff;box-shadow:0 8px 20px -8px #000a}
.labi-bar button[data-labi-mode=premier][aria-pressed=true]{background:linear-gradient(135deg,#ede4ff,#fff 70%);box-shadow:0 0 0 2px #caa6ff,0 10px 26px -10px #caa6ffb0}

/* ---------- stage ---------- */
.labi-view{position:relative}
.labi-stage{position:relative;aspect-ratio:16/10;max-height:74vh;min-height:320px;width:100%;border-radius:20px;
  overflow:hidden;background:#0f172a;isolation:isolate;border:1px solid #ffffff12;touch-action:pan-y;-webkit-tap-highlight-color:transparent}
.labi-stage .lab-canvas{z-index:0}
.labi-loading{position:absolute;inset:0;z-index:7;display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 55%,#1e293b,#0f172a);
  font:600 12px/1 var(--fred);letter-spacing:.3em;text-transform:uppercase;color:#ffffff8c;transition:opacity .8s .1s,visibility .8s .1s}
.labi-loading span{animation:labiBreathe 1.8s ease-in-out infinite}
.labi.lab-live .labi-loading{opacity:0;visibility:hidden}
@keyframes labiBreathe{0%,100%{opacity:.55}50%{opacity:1}}

/* ---------- counters (float over the top-right of the stage) ---------- */
.labi-counters{position:absolute;top:14px;right:14px;z-index:3;display:flex;gap:10px;pointer-events:none}
.labi-count{display:grid;justify-items:center;gap:2px;padding:9px 14px 8px;border-radius:14px;min-width:96px;
  background:#0b1120c4;border:1px solid #ffffff1f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 16px 36px -18px #000c}
.labi-count strong{font:800 26px/1 var(--frau);color:#a5f3fc;font-variant-numeric:tabular-nums;letter-spacing:-.01em}
.labi-count:last-child strong{color:#e9d5ff}
.labi-count span{font:600 10px/1.3 var(--fred);letter-spacing:.1em;text-transform:uppercase;color:#ffffffa6;text-align:center}
@keyframes labiPulse{0%{transform:scale(1)}35%{transform:scale(1.22)}100%{transform:scale(1)}}
.labi-pulse{display:inline-block;animation:labiPulse .38s ease-out}
.labi[hidden] .labi-counters,.labi-counters[hidden]{display:none}

/* ---------- stage-callout labels: dim the UVC/UVV ones while their lamp is off ---------- */
.labi-label-off{opacity:.62}
.labi-label-off b::after{content:" · off";color:#ffffff80;font-weight:600}

.labi-note{margin:10px 2px 0;font:italic 500 12.5px/1.5 var(--out);color:#ffffffa0}
.labi-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

@media (max-width:760px){
  .labi{border-radius:20px}
  .labi-bar button{flex:1 1 0;padding:9px 8px;font-size:12.5px;min-height:48px;text-align:center}
  .labi-stage{aspect-ratio:4/5;max-height:none}
  .labi-counters{top:auto;bottom:12px;left:12px;right:12px;justify-content:center}
  .labi-count{min-width:0;flex:1 1 0;padding:7px 8px 6px}
  .labi-count strong{font-size:21px}
  .labi-count span{font-size:8.5px}
}
@media (prefers-reduced-motion:reduce){
  .labi *{animation:none!important;transition:none!important}
}

/* ---------- fallback (no WebGL / lab-failed): plain HTML, no canvas ---------- */
html.lab-on .labi.lab-failed{display:none}
html.lab-on .labi.lab-failed~.lab-fallback-only{display:block!important}
.labi-fb-list{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:12px}
.labi-fb-list li{font:500 15px/1.6 var(--out);color:var(--mut)}
.labi-fb-list strong{display:block;color:var(--navy);font:700 15px/1.4 var(--out);margin-bottom:2px}

/* ---- lab/css/labm.css ---- */
/* Comfort Lab (mini-split thermal simulator) — everything namespaced .labm.
   Card = navy "lab" panel that sits on the light page like the hero. */
.labm{position:relative;max-width:1120px;margin:0 auto;padding:clamp(12px,1.8vw,22px);border-radius:28px;color:#fff;
  background:radial-gradient(900px 420px at 88% -12%,#ec48991c,transparent 62%),radial-gradient(700px 420px at -8% 112%,#06b6d41c,transparent 60%),linear-gradient(160deg,#0f172a 0%,#131c38 58%,#0b1120 100%);
  border:1px solid #ffffff14;box-shadow:0 44px 90px -44px #0f172ad9,0 2px 0 #ffffff0d inset}
.labm *{box-sizing:border-box}
.labm button{font-family:var(--out)}

/* ---------- top bar: mode + season ---------- */
.labm-bar{display:flex;gap:12px;justify-content:space-between;align-items:center;flex-wrap:wrap;margin-bottom:12px}
.labm-seg{position:relative;display:flex;gap:4px;padding:4px;border-radius:99px;background:#ffffff0d;border:1px solid #ffffff1c}
.labm-seg button{min-height:46px;padding:10px 18px;border:0;border-radius:99px;background:transparent;color:#ffffffb8;font:700 14px/1.15 var(--out);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;transition:background .25s,color .25s,box-shadow .25s;text-align:left}
.labm-seg button:hover{color:#fff;background:#ffffff12}
.labm-seg button[aria-pressed=true]{color:var(--navy);background:#fff;box-shadow:0 8px 20px -8px #000a}
.labm-modes button[data-mode=central][aria-pressed=true]{background:linear-gradient(135deg,#ffe4f1,#fff 70%);box-shadow:0 0 0 2px #ec4899,0 10px 26px -10px #ec4899b0}
.labm-modes button[data-mode=ductless][aria-pressed=true]{background:linear-gradient(135deg,#cffafe,#fff 70%);box-shadow:0 0 0 2px #06b6d4,0 10px 26px -10px #06b6d4c0}
.labm-seasons button{font-size:13px;min-height:44px;padding:8px 14px}
/* first-view nudge toward ductless */
.labm-hint{position:absolute;top:calc(100% + 10px);right:14px;z-index:6;padding:8px 13px;border-radius:12px;background:var(--yellow);color:var(--navy);font:800 12.5px/1 var(--out);white-space:nowrap;opacity:0;transform:translateY(-6px);transition:opacity .4s,transform .4s;pointer-events:none;box-shadow:0 12px 26px -10px #000c}
.labm-hint::before{content:"";position:absolute;top:-6px;right:34px;border:6px solid transparent;border-top:0;border-bottom-color:var(--yellow)}
.labm-hint.on{opacity:1;transform:none;animation:labmBob 1.6s ease-in-out infinite}
.labm-hinting .labm-modes button[data-mode=ductless]{animation:labmPulse 1.6s ease-out infinite}
@keyframes labmBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-4px)}}
@keyframes labmPulse{0%{box-shadow:0 0 0 0 #06b6d4aa}100%{box-shadow:0 0 0 14px #06b6d400}}

/* ---------- stage + HUD ---------- */
.labm-view{display:grid;grid-template-columns:minmax(0,1fr)}
.labm-hud,.labm-stage{grid-area:1/1}
.labm-stage{position:relative;aspect-ratio:16/9;max-height:74vh;min-height:320px;width:100%;border-radius:20px;overflow:hidden;background:#0f172a;isolation:isolate;border:1px solid #ffffff12;touch-action:pan-y;-webkit-tap-highlight-color:transparent}
.labm-stage .lab-canvas{z-index:0}
.labm-hud{position:relative;z-index:3;align-self:start;display:flex;justify-content:space-between;align-items:flex-start;gap:12px;padding:14px;pointer-events:none}
.labm-gap,.labm-unit,.labm-chip{background:#0b1120c4;border:1px solid #ffffff1f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 16px 36px -18px #000c}
.labm-gap{display:grid;padding:10px 16px 12px;border-radius:18px;min-width:168px}
.labm-k{font:600 10.5px/1 var(--fred);letter-spacing:.24em;text-transform:uppercase;color:#ffffffa6}
.labm-gapnum{font:800 clamp(40px,4.6vw,58px)/.95 var(--frau);letter-spacing:-.02em;margin-top:6px;font-variant-numeric:tabular-nums;transition:color .6s}
.labm-gap[data-level=bad] .labm-gapnum{color:#f472b6;text-shadow:0 0 28px #ec489966}
.labm-gap[data-level=meh] .labm-gapnum{color:#fcd34d}
.labm-gap[data-level=good] .labm-gapnum{color:#67e8f9;text-shadow:0 0 28px #06b6d466}
.labm-sub{font:500 12.5px/1.3 var(--out);color:#ffffffb0;margin-top:3px}
.labm-sys{display:grid;justify-items:end;gap:8px}
.labm-chip{display:inline-block;padding:8px 13px;border-radius:99px;font:700 12.5px/1 var(--out);color:#fff;font-variant-numeric:tabular-nums}
.labm-unit{display:grid;gap:5px;padding:10px 14px 8px;border-radius:16px;min-width:200px}
.labm-unit strong{font:700 14px/1.2 var(--out);font-variant-numeric:tabular-nums}
.labm-unit strong[data-on=true]::before{content:"";display:inline-block;width:8px;height:8px;border-radius:50%;background:#34d399;margin-right:7px;box-shadow:0 0 8px #34d399;vertical-align:1px}
.labm-spark{width:180px;height:38px;display:block}
.labm-loading{position:absolute;inset:0;z-index:7;display:grid;place-items:center;background:radial-gradient(60% 60% at 50% 55%,#1e293b,#0f172a);font:600 12px/1 var(--fred);letter-spacing:.3em;text-transform:uppercase;color:#ffffff8c;transition:opacity .8s .1s,visibility .8s .1s}
.labm-loading span{animation:labmBreathe 1.8s ease-in-out infinite}
@keyframes labmBreathe{50%{opacity:.45}}
.labm.lab-live .labm-loading{opacity:0;visibility:hidden}
.labm-ff{position:absolute;bottom:16px;right:16px;z-index:3;padding:7px 12px;border-radius:99px;background:#06b6d4e6;color:#04232b;font:800 12px/1 var(--out);white-space:nowrap;opacity:0;transform:translateY(8px);transition:opacity .35s,transform .35s;pointer-events:none;font-variant-numeric:tabular-nums}
.labm-ff.on{opacity:1;transform:none}
.labm-ff b{font-weight:800}

/* ---------- room callouts (positioned by JS) ---------- */
.labm-rooms{position:absolute;inset:0;z-index:2;pointer-events:none}
.labm-leads{position:absolute;inset:0;width:100%;height:100%;overflow:visible}
.labm-lead{fill:none;stroke:#ffffffb0;stroke-width:1.5;stroke-dasharray:3 3}
.labm-dot{fill:var(--yellow);stroke:#0b1120;stroke-width:2}
.labm-room{position:absolute;left:0;top:0;pointer-events:auto;display:grid;grid-template-columns:auto auto;grid-template-areas:"n t" "s t" "p t";align-items:center;column-gap:10px;row-gap:3px;min-height:44px;padding:7px 12px 7px 10px;border-radius:14px;
  background:#0b1120d6;border:1px solid #ffffff2a;border-left:4px solid var(--rc,#e0fbff);color:#fff;cursor:pointer;text-align:left;will-change:transform;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);box-shadow:0 14px 30px -14px #000d;transition:border-color .3s,box-shadow .3s,background .3s}
.labm-room:hover,.labm-room.sel{background:#0b1120f2;box-shadow:0 0 0 2px var(--yellow),0 16px 34px -14px #000e}
.labm-rn{grid-area:n;font:700 12.5px/1.1 var(--out);color:#ffffffe6;white-space:nowrap}
.labm-rt{grid-area:t;font:800 25px/1 var(--frau);color:var(--rc,#fff);font-variant-numeric:tabular-nums;text-shadow:0 0 16px #0009}
.labm-rs{grid-area:s;justify-self:start;font:700 10px/1 var(--fred);letter-spacing:.12em;text-transform:uppercase;padding:3px 7px;border-radius:99px;background:#ffffff1a;color:#fff}
.labm-rs[data-state=hot]{background:#ec489933;color:#fbcfe8}
.labm-rs[data-state=cold]{background:#3b82f633;color:#bfdbfe}
.labm-rs[data-state=comfy]{background:#06b6d433;color:#a5f3fc}
.labm-rset{grid-area:p;font:600 11px/1 var(--out);color:#ffffff99}

/* ---------- room details (floating card; bottom sheet on phones) ---------- */
.labm-details{position:absolute;left:14px;bottom:14px;z-index:4;width:min(330px,calc(100% - 28px));pointer-events:none}
.labm-detail{pointer-events:auto;position:relative;padding:16px 18px 16px;border-radius:18px;background:#0b1120;border:1px solid #ffffff2a;box-shadow:0 24px 50px -20px #000e;animation:labmIn .35s cubic-bezier(.16,1,.3,1)}
@keyframes labmIn{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.labm-detail[hidden]{display:none}
.labm-dk{font:600 10.5px/1 var(--fred);letter-spacing:.2em;text-transform:uppercase;color:#ffffffa0;margin:0 0 7px}
.labm-detail h3{font:800 19px/1.2 var(--out);color:#fff;margin:0 32px 6px 0}
.labm-dd{font:500 14px/1.55 var(--out);color:#ffffffc2;margin:0}
.labm-x{position:absolute;top:8px;right:8px;width:44px;height:44px;border-radius:50%;border:0;background:#ffffff14;color:#fff;font:400 22px/1 var(--out);cursor:pointer}
.labm-x:hover{background:#ffffff26}
.labm-tstat{display:flex;align-items:center;gap:10px;margin-top:12px;flex-wrap:wrap}
.labm-tstat button{width:46px;height:46px;border-radius:50%;border:1px solid #ffffff38;background:#ffffff12;color:#fff;font:700 24px/1 var(--out);cursor:pointer;transition:background .2s,transform .15s}
.labm-tstat button:hover{background:#06b6d4;border-color:#06b6d4}
.labm-tstat button:active{transform:scale(.94)}
.labm-tstat button:disabled{opacity:.35;cursor:default;background:#ffffff12}
.labm-tstat output{min-width:62px;text-align:center;font:800 30px/1 var(--frau);color:#a5f3fc;font-variant-numeric:tabular-nums}
.labm-tl{flex-basis:100%;font:600 11.5px/1.3 var(--out);color:#ffffff8c}
.labm-tnote{margin:10px 0 0;font:600 12.5px/1.4 var(--out);color:#fbcfe8}

/* ---------- legend ---------- */
.labm-legend{position:absolute;left:14px;bottom:14px;z-index:2;width:min(250px,42%);padding:9px 12px 20px;border-radius:12px;background:#0b1120b8;border:1px solid #ffffff1a;pointer-events:none}
.labm-legend-bar{display:block;height:8px;border-radius:99px}
.labm-legend-t{position:relative;display:block;height:10px;margin-top:4px}
.labm-legend-t i{position:absolute;top:0;transform:translateX(-50%);font:600 10.5px/1 var(--out);font-style:normal;color:#ffffffb8;white-space:nowrap}
.labm-legend-t i:first-child{transform:none}.labm-legend-t i:last-child{transform:translateX(-100%)}
.labm-has-detail .labm-legend{opacity:.0;transition:opacity .2s}

/* ---------- under the canvas: sun + reset ---------- */
.labm-under{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-top:10px;min-height:64px;flex-wrap:wrap}
.labm-sun{display:flex;align-items:center;gap:12px;cursor:grab;touch-action:none;border-radius:16px;padding:2px 10px 2px 2px;user-select:none;-webkit-user-select:none}
.labm-sun:active{cursor:grabbing}
.labm-sun svg{width:190px;height:76px;display:block;overflow:visible}
.labm-sun-hz{stroke:#ffffff26;stroke-width:1.5}
.labm-sun-track{fill:none;stroke:url(#labm-arc);stroke-width:3;stroke-dasharray:2 7;stroke-linecap:round;opacity:.85}
.labm-sun svg text{fill:#ffffff8c;font:600 11px var(--out)}
.labm-sun-glow{fill:#fbbf2440}
.labm-sun-core{fill:#fbbf24;stroke:#fff7d6;stroke-width:2.5}
.labm-sun:hover .labm-sun-glow,.labm-sun:focus-visible .labm-sun-glow{fill:#fbbf2466}
.labm-sun-label{font:600 13.5px/1.3 var(--out);color:#ffffffc0}
.labm-sun-label b{display:block;font:800 22px/1.1 var(--frau);color:#fde68a;font-variant-numeric:tabular-nums}
.labm-night{margin:0;font:600 14px/1.5 var(--out);color:#bfdbfe;max-width:560px}
.labm-reset{min-height:44px;padding:10px 18px;border-radius:99px;border:1px solid #ffffff30;background:transparent;color:#ffffffd0;font:700 13.5px/1 var(--out);cursor:pointer;margin-left:auto}
.labm-reset:hover{background:#ffffff14;color:#fff}
.labm[data-labm-season=january] .labm-sun{display:none}
.labm[data-labm-season=july] .labm-night{display:none}
.labm[data-labm-mode=central] [data-show=ductless],.labm[data-labm-mode=ductless] [data-show=central]{display:none!important}

/* ---------- CTA ---------- */
.labm-cta{margin-top:14px;padding:clamp(16px,2.2vw,24px);border-radius:22px;background:#ffffff08;border:1px solid #ffffff14;text-align:center}
.labm-q{margin:0 0 14px;font:800 clamp(21px,2.4vw,28px)/1.2 var(--frau);color:#fff}
.labm-chips{display:flex;flex-wrap:wrap;justify-content:center;gap:10px}
.labm-chips button{min-height:46px;padding:10px 19px;border-radius:99px;border:1px solid #ffffff30;background:#ffffff0f;color:#fff;font:700 14.5px/1 var(--out);cursor:pointer;transition:background .2s,color .2s,transform .2s,border-color .2s}
.labm-chips button:hover{transform:translateY(-2px);border-color:#fbbf24}
.labm-chips button[aria-pressed=true]{background:var(--yellow);border-color:var(--yellow);color:var(--navy)}
.labm-reveal{margin-top:18px;opacity:0;transform:translateY(10px);transition:opacity .5s,transform .5s cubic-bezier(.16,1,.3,1)}
.labm-reveal.in{opacity:1;transform:none}
.labm-rv-h{margin:0;font:800 clamp(19px,2vw,23px)/1.25 var(--out);color:#fde68a}
.labm-rv-p{margin:6px auto 16px;max-width:560px;font:500 15px/1.6 var(--out);color:#ffffffc4}
.labm-ctas{display:flex;flex-wrap:wrap;gap:12px;justify-content:center}
.labm-note{text-align:center;font:italic 400 12.5px/1.5 var(--out);color:#ffffff8a;margin:14px auto 2px;max-width:640px}
.labm-sr{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}

/* ---------- failure → show the blueprint fallback ---------- */
html.lab-on .labm.lab-failed{display:none}
html.lab-on .labm.lab-failed~.lab-fallback-only{display:block!important}

/* ---------- tablets ---------- */
@media (max-width:900px){
  .labm-bar{justify-content:center}
  .labm-hud{grid-area:1/1;padding:0 0 10px}
  .labm-stage{grid-area:2/1;aspect-ratio:4/3}
  .labm-hint{right:50%;transform:translate(50%,-6px)}
  .labm-hint.on{transform:translate(50%,0);animation:none}
  .labm-hint::before{right:calc(50% - 6px)}
}
/* ---------- phones: HUD moves above the canvas, portrait canvas, thumb-size controls ---------- */
@media (max-width:640px){
  .labm{border-radius:22px;padding:10px;margin:0 -2px}
  .labm-bar{gap:8px}
  .labm-seg{width:100%}
  .labm-seg button{flex:1 1 0;padding:9px 8px;font-size:13px;min-height:52px;text-align:center}
  .labm-seasons button{min-height:44px;font-size:12.5px}
  .labm-hud{grid-area:1/1;display:grid;grid-template-columns:auto minmax(0,1fr);align-items:stretch;padding:0 0 8px;gap:8px}
  .labm-stage{grid-area:2/1;aspect-ratio:4/5;max-height:none;min-height:0;border-radius:16px}
  .labm-gap{min-width:0;padding:8px 12px 9px;border-radius:14px}
  .labm-k{font-size:9.5px;letter-spacing:.18em}
  .labm-gapnum{font-size:36px}
  .labm-gap .labm-sub{display:none}
  .labm-sys{justify-items:stretch;gap:6px;min-width:0}
  .labm-chip{justify-self:end;font-size:11px;padding:6px 9px}
  .labm-unit{min-width:0;padding:7px 10px 5px;gap:3px;border-radius:14px}
  .labm-unit strong{font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
  .labm-spark{width:100%;height:22px}
  .labm-room{grid-template-areas:"n" "t";grid-template-columns:auto;row-gap:0;padding:4px 9px 5px 7px;min-height:44px;border-radius:11px;border-left-width:3px}
  .labm-rn{font-size:10.5px}
  .labm-rt{font-size:19px}
  .labm-rs,.labm-rset{display:none}
  .labm-details{left:8px;right:8px;bottom:8px;width:auto}
  .labm-detail{padding:14px 14px 14px}
  .labm-detail h3{font-size:17px}
  .labm-dd{font-size:13.5px}
  .labm-ff{top:8px;bottom:auto;right:8px;font-size:11px;padding:6px 10px}
  .labm-legend{left:8px;bottom:8px;width:52%;padding:6px 8px 15px;border-radius:10px}
  .labm-legend-bar{height:6px}
  .labm-legend-t i{font-size:9.5px}
  .labm-under{justify-content:center}
  .labm-sun{width:100%;justify-content:center}
  .labm-sun svg{width:170px;height:68px}
  .labm-reset{margin:0 auto}
  .labm-chips button{flex:1 1 40%}
  .labm-ctas .btn{width:100%}
}
@media (prefers-reduced-motion:reduce){
  .labm *{animation:none!important;transition:none!important}
}

/* ---- lab/css/labx.css ---- */
/* ==========================================================================
   Inside the Machine — the scroll-driven exploded split system (.labx)
   Three layouts from one markup:
     1. static   (no JS / no WebGL / html.lab-off / .lab-failed): a normal content
                 section — intro, poster, chapter cards, parts list. Base rules.
     2. still    (html.lab-on + reduced motion, or ?labstate=): same flow, but the
                 live 3D frame replaces the poster.                 .lab-on rules
     3. live     (html.lab-on, motion OK): pinned 100svh stage, copy panel,
                 chapter HUD, thermometer rail.         @media no-preference rules
   ========================================================================== */

.labx{--nav:72px;--sheet:clamp(240px,39svh,356px);position:relative;color:#fff;
  display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;
  padding:clamp(72px,9vw,120px) max(4vw,calc(50% - 580px));
  background:radial-gradient(900px 620px at 88% -6%,#ec489922,transparent 60%),
             radial-gradient(760px 560px at -6% 104%,#06b6d41f,transparent 60%),
             radial-gradient(120% 90% at 55% 45%,#0f172a 0%,#0b1120 100%)}
.labx .lab-pin,.labx .lab-sticky,.labx .lab-copy{display:contents}
.labx .lab-stage,.labx .lab-hud,.labx .lab-rail,.labx .lab-skip,.labx .lab-call{display:none}

/* ---- type ---- */
.labx .eyebrow{color:var(--yellow);margin-bottom:13px}
.labx h2{color:#fff;font-size:clamp(32px,3.7vw,54px);line-height:1.04}
.labx h3{font:800 clamp(25px,2.4vw,36px)/1.1 var(--frau);letter-spacing:-.012em;color:#fff;text-wrap:balance}
.labx [data-chapter] p:not(.eyebrow){font:500 16.5px/1.62 var(--out);color:#ffffffb8;margin-top:13px;max-width:34em}
.labx [data-chapter] p strong{color:#fff;font-weight:700}
.labx .lab-hint{display:none;align-items:center;gap:8px;margin-top:22px;font:600 11.5px/1 var(--fred);letter-spacing:.3em;text-transform:uppercase;color:#ffffff7a}
.labx .lab-hint::after{content:"";width:1px;height:22px;background:linear-gradient(#ffffff90,#ffffff00)}
.labx .lab-specs{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.labx .lab-specs span{display:inline-flex;align-items:center;padding:8px 12px;border-radius:99px;background:#fbbf241a;border:1px solid #fbbf244d;color:var(--yellow);font:700 12.5px/1 var(--out);white-space:nowrap}
.labx .lab-seasons{display:flex;flex-wrap:wrap;gap:8px;margin-top:16px}
.labx .lab-seasons span{display:inline-flex;align-items:center;gap:6px;padding:8px 13px;border-radius:99px;border:1px solid #ffffff26;background:#ffffff0a;font:700 12.5px/1 var(--out);color:#ffffffa8;transition:background .4s,color .4s,border-color .4s}
.labx[data-flow="cool"] .lab-seasons [data-season="cool"]{background:var(--cyan);border-color:transparent;color:#062a33}
.labx[data-flow="heat"] .lab-seasons [data-season="heat"]{background:var(--pink);border-color:transparent;color:#fff}
.labx .lab-cta{display:flex;flex-wrap:wrap;gap:12px;margin-top:22px}

/* ---- static layout (fallback) ---- */
.labx [data-chapter="intro"]{grid-column:1/-1;order:1;text-align:center;max-width:780px;margin:0 auto 14px}
.labx [data-chapter="intro"] p:not(.eyebrow){margin-left:auto;margin-right:auto}
.labx .lab-poster{grid-column:1/-1;order:2;display:block}
.labx .lab-poster img{width:100%;height:auto;border-radius:26px;border:1px solid #ffffff1c;box-shadow:0 34px 80px -30px #000c;background:#0b1120}
.labx .lab-note{grid-column:1/-1;order:3;justify-self:center;font:600 11px/1.3 var(--fred);letter-spacing:.14em;text-transform:uppercase;color:#ffffff75;padding:7px 13px;border:1px solid #ffffff1c;border-radius:99px;background:#0b112099}
.labx [data-chapter]:not([data-chapter="intro"]){order:4;background:#ffffff09;border:1px solid #ffffff1a;border-radius:24px;padding:30px 30px 32px}
.labx [data-chapter="cozy"]{grid-column:1/-1;order:5;background:linear-gradient(135deg,#ec48991f,#06b6d414 55%,#fbbf2414);border-color:#ffffff26}
.labx .lab-parts-h{grid-column:1/-1;order:6;margin-top:26px;font:800 22px/1.2 var(--out);color:#fff}
.labx .lab-parts{grid-column:1/-1;order:7;list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px 26px}
.labx .lab-parts li{padding:14px 0;border-bottom:1px solid #ffffff14}
.labx .lab-parts li b{font:700 15.5px/1.3 var(--out);color:#fff}
.labx .lab-parts li em{display:inline-block;margin-left:8px;vertical-align:2px;font:700 9.5px/1 var(--fred);letter-spacing:.18em;text-transform:uppercase;font-style:normal;color:#0b1120;background:var(--yellow);padding:4px 7px;border-radius:99px}
.labx .lab-parts li span{display:block;margin-top:5px;font:500 14.5px/1.55 var(--out);color:#ffffffa3}
@media (max-width:760px){
  .labx{grid-template-columns:1fr;gap:16px}
  .labx .lab-parts{grid-template-columns:1fr}
  .labx [data-chapter]:not([data-chapter="intro"]){padding:24px 22px 26px}
}

/* ---- still layout: live frame instead of the poster (reduced motion) ---- */
.lab-on .labx:not(.lab-failed) .lab-poster{display:none}
/* the glossary stays in the page for screen readers while the 3D callouts (aria-hidden copies) show it */
.lab-on .labx:not(.lab-failed) .lab-parts,
.lab-on .labx:not(.lab-failed) .lab-parts-h,
.labx .lab-sr{position:absolute !important;width:1px;height:1px;margin:-1px;padding:0;border:0;overflow:hidden;clip:rect(0 0 0 0);clip-path:inset(50%);white-space:nowrap}
.lab-on .labx:not(.lab-failed) .lab-stage{display:block;position:relative;grid-column:1/-1;order:2;height:clamp(420px,72svh,720px);border-radius:26px;overflow:hidden;border:1px solid #ffffff17;
  background:radial-gradient(120% 90% at 55% 45%,#131c34 0%,#0b1120 100%)}

/* ---- callouts (3D-anchored part labels) ---- */
.labx .lab-label{display:block;list-style:none;max-width:250px;pointer-events:auto;cursor:default}
.labx .lab-label em{display:inline-block;margin-top:6px;font:700 9.5px/1 var(--fred);letter-spacing:.18em;text-transform:uppercase;font-style:normal;color:#0b1120;background:var(--yellow);padding:4px 7px;border-radius:99px}
.labx .lab-labels.many .lab-label span{display:none}
.labx .lab-labels.many .lab-label.open{z-index:1}
.labx .lab-labels.many .lab-label.open span{display:block}
.labx .lab-dot.e-hot{fill:var(--pink)}
.labx .lab-dot.e-cold{fill:var(--cyan)}
.labx .lab-dot.e-elec{fill:var(--yellow)}
.labx .lab-label[data-energy="elec"]{border-color:#fbbf2450}
@media (max-width:700px){
  .labx .lab-label b[data-short]{font-size:0}
  .labx .lab-label b[data-short]::after{content:attr(data-short);font:700 13px/1.25 var(--out)}
}

/* ---- live: pinned stage ---- */
@media (prefers-reduced-motion:no-preference){
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]){display:block;padding:0}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-pin{display:block;position:relative;height:calc(var(--pin-vh,540) * 1vh)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-sticky{display:block;position:sticky;top:0;height:100vh;height:100svh;overflow:hidden}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-sticky::before{content:"";position:absolute;inset:0 auto 0 0;width:min(620px,52vw);z-index:2;pointer-events:none;
    background:linear-gradient(90deg,#0b1120eb 0%,#0b1120c8 50%,#0b112000 100%)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-stage{position:absolute;inset:0;height:auto;border:0;border-radius:0;background:none}

  /* copy panel: desktop left column, chapters cross-fade */
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-copy{display:grid;position:absolute;z-index:3;left:clamp(22px,4.4vw,72px);top:calc(var(--nav) + 18px);bottom:108px;width:min(430px,35vw);align-content:center;pointer-events:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter]{grid-area:1/1;align-self:center;order:0;margin:0;max-width:none;text-align:left;background:none;border:0;border-radius:0;padding:0;
    opacity:0;transform:translate3d(0,24px,0);transition:opacity .45s ease,transform .8s cubic-bezier(.16,1,.3,1);pointer-events:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter].on{opacity:1;transform:none;pointer-events:auto;transition-delay:.06s}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter="intro"] p:not(.eyebrow){margin-left:0}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hint{display:inline-flex}

  /* chapter HUD: pills + progress, bottom centre */
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hud{display:flex;flex-direction:column;align-items:stretch;gap:9px;position:absolute;z-index:4;left:50%;bottom:22px;transform:translateX(-50%)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps{display:flex;gap:4px;list-style:none;margin:0;padding:5px;border-radius:99px;background:#0b1120c7;border:1px solid #ffffff1f;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);box-shadow:0 18px 44px -18px #000c}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button{--c:var(--yellow);--ink:#0b1120;display:inline-flex;align-items:center;gap:8px;padding:10px 15px;border:0;border-radius:99px;background:transparent;color:#ffffffa6;cursor:pointer;font:700 13px/1 var(--out);white-space:nowrap;transition:background .35s,color .35s}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button:hover{color:#fff;background:#ffffff12}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button .n{font:600 11px/1 var(--fred);letter-spacing:.12em;opacity:.75}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button[data-energy="hot"]{--c:var(--pink);--ink:#fff}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button[data-energy="cold"]{--c:var(--cyan);--ink:#062a33}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button.on{background:var(--c);color:var(--ink)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button.on .n{opacity:1}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button.done .n{font-size:0}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button.done .n::before{content:"\2713";font-size:12px;color:var(--c)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-progress{height:3px;margin:0 18px;border-radius:99px;background:#ffffff1a;overflow:hidden}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-progress i{display:block;height:100%;transform-origin:0 50%;transform:scaleX(0);background:linear-gradient(90deg,var(--pink),var(--cyan),var(--yellow))}

  /* thermometer rail: right edge; mercury 88° pink → 72° cyan */
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail{--h:.8;--k:1;display:block;position:absolute;z-index:3;right:clamp(16px,2.2vw,30px);top:50%;width:14px;height:min(250px,32svh);transform:translateY(-50%);
    border-radius:99px;background:#ffffff0d;border:1px solid #ffffff2b}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail i{position:absolute;left:3px;right:3px;bottom:3px;height:calc((100% - 6px) * var(--h));border-radius:99px;
    background:color-mix(in oklab,var(--pink) calc(var(--k) * 100%),var(--cyan));transition:height .2s linear;box-shadow:0 0 14px color-mix(in oklab,var(--pink) calc(var(--k) * 100%),var(--cyan))}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail::after{content:"";position:absolute;left:50%;bottom:-13px;width:22px;height:22px;margin-left:-11px;border-radius:50%;border:1px solid #ffffff2b;
    background:color-mix(in oklab,var(--pink) calc(var(--k) * 100%),var(--cyan))}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail b{position:absolute;right:-6px;top:-34px;font:800 16px/1 var(--out);font-variant-numeric:tabular-nums;color:#fff;white-space:nowrap}

  /* always-visible extras */
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-skip{display:inline-flex;align-items:center;gap:6px;position:absolute;z-index:4;left:clamp(22px,4.4vw,72px);bottom:34px;font:600 11.5px/1 var(--fred);letter-spacing:.2em;text-transform:uppercase;color:#ffffff8c;text-decoration:none;padding:8px 0}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-skip:hover{color:var(--yellow)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call{display:inline-flex;align-items:center;gap:8px;position:absolute;z-index:4;right:clamp(16px,2.2vw,30px);bottom:24px;padding:13px 20px;border-radius:99px;
    background:var(--pink);color:#fff;text-decoration:none;font:800 14px/1 var(--out);border:2px solid #ffffff3d;box-shadow:0 12px 34px -12px #ec4899a0}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call:hover{transform:translateY(-1px)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-note{position:absolute;z-index:3;top:calc(var(--nav) + 14px);right:clamp(16px,2.2vw,30px);margin:0}
}

/* live, bottom-sheet layout: phones + portrait tablets */
@media (prefers-reduced-motion:no-preference) and (max-width:860px) and (min-height:501px),(prefers-reduced-motion:no-preference) and (max-aspect-ratio:5/6){
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-pin{height:calc(var(--pin-vh-m,470) * 1vh)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-sticky::before{inset:auto 0 0 0;width:auto;height:calc(var(--sheet) + 70px);background:linear-gradient(0deg,#0b1120 0%,#0b1120f2 calc(100% - 70px),#0b112000 100%)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-copy{left:0;right:0;top:auto;bottom:0;width:auto;height:var(--sheet);padding:6px 20px calc(14px + env(safe-area-inset-bottom));align-content:start}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter]{align-self:start}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) h2{font-size:clamp(28px,7.4vw,40px)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) h3{font-size:clamp(23px,6vw,32px)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter] p:not(.eyebrow){font-size:14.5px;line-height:1.52;margin-top:9px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .eyebrow{margin-bottom:10px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hint{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-seasons,.lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-specs{margin-top:11px;gap:6px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-specs span,.lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-seasons span{padding:7px 10px;font-size:11.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-cta{margin-top:14px;gap:9px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-cta .btn{padding:15px 20px;font-size:14.5px}

  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hud{left:10px;right:98px;top:calc(var(--nav) + 8px);bottom:auto;transform:none;gap:7px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps{justify-content:space-between}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps{padding:4px;gap:2px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button{padding:9px 9px;gap:6px;font-size:12.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button:not(.on) .t{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-progress{margin:0 14px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call{top:calc(var(--nav) + 8px);bottom:auto;right:10px;padding:11px 15px;font-size:13px;border-width:1.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call .num{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail{right:14px;top:calc(var(--nav) + 104px);transform:none;height:min(120px,15svh);width:12px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail b{font-size:13px;top:-26px;right:-4px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-note{top:auto;right:auto;left:10px;bottom:calc(var(--sheet) + 6px);font:600 10px/1.3 var(--out);letter-spacing:.02em;text-transform:none;padding:5px 10px;border-radius:10px;max-width:calc(100% - 118px)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-skip{left:auto;right:14px;bottom:calc(var(--sheet) + 8px);padding:5px 0;font-size:10.5px;letter-spacing:.14em}
}
/* live, short landscape screens (phones on their side): compact side panel */
@media (prefers-reduced-motion:no-preference) and (max-height:500px) and (min-aspect-ratio:5/4){
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-sticky::before{width:min(470px,56vw)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-copy{top:calc(var(--nav) + 6px);bottom:58px;left:16px;width:min(360px,44vw)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) h2{font-size:24px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) h3{font-size:19px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .eyebrow{margin-bottom:6px;font-size:10px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter] p:not(.eyebrow){font-size:12.5px;line-height:1.42;margin-top:6px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hint{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-seasons,.lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-specs{margin-top:7px;gap:5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-specs span,.lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-seasons span{padding:5px 8px;font-size:10.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-cta{margin-top:8px;gap:8px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-cta .btn{padding:10px 14px;font-size:12.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hud{bottom:8px;gap:5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button{padding:7px 9px;font-size:11.5px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-steps button:not(.on) .t{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-rail{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-skip{bottom:14px;left:16px;font-size:10px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call{bottom:10px;right:12px;padding:9px 13px;font-size:12px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call .num{display:none}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-note{top:calc(var(--nav) + 6px);right:12px;font-size:9px;letter-spacing:.08em;max-width:48vw}
}
@media (prefers-reduced-motion:no-preference) and (max-height:620px) and (max-width:860px){
  .labx{--sheet:clamp(230px,44svh,300px)}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) [data-chapter] p:not(.eyebrow){font-size:14px}
}
/* touch targets on small phones: ≥44×44px tap area for the chapter pills, skip link and call pill, without
   growing their compact visual size. An invisible ::after extends the hit area only as far as the tour's own
   HUD spacing allows (chapter pills sit ~27px apart at 390px, so ±7px is safe; skip/call are already
   position:absolute, so no position change is needed for them). */
@media (prefers-reduced-motion:no-preference) and (max-width:480px){
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hud .lab-steps button{position:relative}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-hud .lab-steps button::after{content:"";position:absolute;inset:-8px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-skip::after{content:"";position:absolute;inset:-12px -4px}
  .lab-on .labx:not(.lab-still):not(.lab-failed):not([data-mode="tabs"]) .lab-call::after{content:"";position:absolute;inset:-5px}
}

/* ---- the old pinned "No Drama" block, now a static card row (homepage) ---- */
.promise-sec{background:linear-gradient(180deg,#fdf7ef,var(--paper) 70%)}
.promise-sec .card .tag{margin-bottom:12px}
.promise-sec .card h3{font:800 21px/1.25 var(--out);color:var(--navy)}
.promise-sec .card strong{color:var(--navy)}

/* ==========================================================================
   Tabs mode — .labx[data-mode="tabs"] > .labt   (interactive card-height stage, not pinned)
   static  (no html.lab-on / failed): heading, every chapter stacked as a card with its step list,
           parts list — the tab row and the stage are hidden
   live    (html.lab-on): tab row → [copy panel | 16:9 stage card], one chapter visible at a time
   ========================================================================== */
.labx[data-mode="tabs"]{display:block;padding:clamp(64px,8vw,110px) 0}
.labx[data-mode="tabs"] .labt{width:min(1160px,92vw);margin:0 auto}
.labx[data-mode="tabs"] .labt-head{text-align:center;max-width:780px;margin:0 auto 26px}
.labx[data-mode="tabs"] .labt-head .lede{color:#ffffffb0;margin-left:auto;margin-right:auto}
.labx[data-mode="tabs"] .labt-tabs{display:none}
.labx[data-mode="tabs"] .labt-body{display:grid;gap:18px}
.labx[data-mode="tabs"] .lab-copy{display:grid;gap:16px}
.labx[data-mode="tabs"] [data-chapter]{order:0}
.labx[data-mode="tabs"] .lab-note{display:table;margin:14px auto 0}
.labx[data-mode="tabs"] > .lab-parts,.labx[data-mode="tabs"] .labt > .lab-parts{margin-top:30px}
.labx[data-mode="tabs"] .lab-parts-h{margin-top:34px}
.labx .labt-steps{list-style:none;counter-reset:labt;margin:16px 0 0;padding:0;display:grid;gap:4px}
.labx .labt-steps li{counter-increment:labt;display:flex;gap:10px;align-items:flex-start;padding:7px 10px;border-radius:10px;font:600 14px/1.4 var(--out);color:#ffffffb0;transition:background .3s,color .3s}
.labx .labt-steps li::before{content:counter(labt);flex:0 0 22px;height:22px;border-radius:50%;display:grid;place-items:center;font:700 11px/1 var(--fred);background:#ffffff14;color:#ffffffb0;transition:background .3s,color .3s}

.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{display:flex;gap:8px;margin:0 0 16px;overflow-x:auto;scrollbar-width:none;padding:2px}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs::-webkit-scrollbar{display:none}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 0 150px;text-align:left;padding:13px 16px 14px;border-radius:16px;cursor:pointer;
  background:#ffffff0a;border:1px solid #ffffff1c;color:#ffffffc4;font:700 14.5px/1.25 var(--out);transition:background .25s,color .25s,border-color .25s,transform .25s}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]:hover{background:#ffffff14;color:#fff}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go] .n{display:block;margin-bottom:6px;font:600 10.5px/1 var(--fred);letter-spacing:.24em;text-transform:uppercase;color:var(--yellow)}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go][aria-selected="true"]{background:#fff;color:var(--navy);border-color:#fff;box-shadow:0 14px 34px -16px #000c}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go][aria-selected="true"] .n{color:var(--pink)}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-body{grid-template-columns:minmax(0,.86fr) minmax(0,1.6fr);align-items:start;gap:20px}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .lab-copy{display:block;grid-column:1;grid-row:1}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter][hidden]{display:none}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{display:block;position:relative;grid-column:2;grid-row:1;order:0;height:auto;aspect-ratio:16/10;max-height:620px;width:100%;
  border-radius:24px;overflow:hidden;border:1px solid #ffffff17;
  background:radial-gradient(700px 420px at 85% -10%,#ec48991c,transparent 60%),radial-gradient(560px 400px at -8% 110%,#06b6d41a,transparent 60%),radial-gradient(120% 90% at 55% 45%,#131c34 0%,#0b1120 100%)}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li{cursor:pointer}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li:hover{background:#ffffff0c;color:#fff}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li.on{background:#ffffff14;color:#fff}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li.on::before{background:var(--yellow);color:var(--navy)}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li.done{color:#ffffffd0}
.lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-steps li.done::before{content:"\2713";background:#06b6d42e;color:var(--cyan)}
.labx .labt-top{position:absolute;left:12px;top:12px;right:12px;z-index:3;display:flex;flex-wrap:wrap;gap:8px;pointer-events:none}
.labx .labt-readouts{display:flex;flex-wrap:wrap;gap:8px}
.labx .labt-ro{display:inline-flex;align-items:baseline;gap:8px;padding:8px 12px;border-radius:12px;background:#0b1120d9;border:1px solid #ffffff22;
  -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font:600 12.5px/1 var(--out);color:#ffffffb8}
.labx .labt-ro b{font:800 15px/1 var(--out);color:#fff;font-variant-numeric:tabular-nums}
.labx .labt-ro i{font-style:normal;font-size:10.5px;color:#ffffff80}
.labx .labt-ro[data-tone="ok"] b{color:#6ee7b7}
.labx .labt-ro[data-tone="warn"] b{color:var(--yellow)}
.labx .labt-ro[data-tone="bad"] b{color:#f9a8d4}
.labx .labt-bottom{position:absolute;left:12px;right:12px;bottom:12px;z-index:3;display:flex;justify-content:space-between;align-items:center;gap:10px;pointer-events:none}
.labx .labt-clock{padding:8px 12px;border-radius:99px;background:#0b1120c7;border:1px solid #ffffff1c;font:600 12px/1 var(--out);color:#ffffffb0;font-variant-numeric:tabular-nums;white-space:nowrap}
.labx .labt-replay{pointer-events:auto;padding:10px 16px;border-radius:99px;border:0;cursor:pointer;background:var(--yellow);color:var(--navy);font:800 13px/1 var(--out);box-shadow:0 10px 28px -12px #fbbf2499}
.labx .labt-replay:hover{transform:translateY(-1px)}
.labx .labt-top[hidden],.labx .labt-bottom[hidden]{display:none}
/* step lists stay lists: the engine puts a real <button> inside each <li> (the <li> keeps the number + layout) */
.labx .labt-step{all:unset;box-sizing:border-box;display:flex;flex:1 1 auto;min-width:0;gap:10px;align-items:inherit;cursor:pointer;border-radius:6px}
.labx .labt-step:focus-visible{outline:2px solid var(--yellow);outline-offset:4px}
/* phones only: the playing step's words in the stage's bottom bar (aria-hidden; two lines reserved so the
   framing doesn't jump between short and long captions) */
.labx .labt-cap{display:none}
@media (max-width:860px){
  /* consistent mobile order (all three tabs pages): eyebrow + heading + CTA above the stage, the longer
     copy (paragraphs, step lists, check lists) below it. .lab-copy and the active [data-chapter] go
     display:contents so their children can interleave with .lab-stage in one flat, orderable flex column
     (flex, not grid: Chrome does not honor `order` on grid items flattened through nested display:contents,
     but it does for flex items — verified live). The container's own gap is zeroed so spacing comes from
     each element's own (already-tuned) margin instead of stacking on top of it. */
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-body{display:flex;flex-direction:column;gap:0}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .lab-copy{display:contents}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter]:not([hidden]){display:contents}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter] > *{order:4}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter] > .eyebrow,
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter] > h3{order:1}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) [data-chapter] > .lab-cta{order:2}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{order:3;margin-top:18px;aspect-ratio:4/5;max-height:min(620px,72svh)}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:0 0 auto;min-width:0;padding:11px 14px;font-size:13.5px}
  .labx .labt-clock{font-size:11px;padding:7px 10px}
  .labx .labt-ro{padding:7px 10px;font-size:11.5px}.labx .labt-ro b{font-size:13.5px}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-bottom{flex-wrap:wrap;row-gap:8px}
  .lab-on .labx[data-mode="tabs"]:not(.lab-failed) .labt-cap:not(:empty){display:flex;align-items:center;flex:1 0 100%;order:-1;margin:0;
    min-height:calc(2 * 1.35em + 16px);padding:8px 12px;border-radius:12px;background:#0b1120d9;border:1px solid #ffffff22;
    -webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);font:700 13.5px/1.35 var(--out);color:#fff}
}

/* ---- heat-pump page (#both-seasons, program "heatpump") — scoped extras, owned by the heatpump author ---- */
#both-seasons [data-chapter] .hp-spec-h{margin-top:14px;font:600 12.5px/1.4 var(--out);color:#ffffff8c}
#both-seasons .hp-spec-h + .lab-specs{margin-top:8px}
#both-seasons [data-chapter] .hp-note{margin-top:10px;font-size:14px;line-height:1.5;color:#ffffffa6}
#both-seasons [data-chapter] .hp-fine{margin-top:14px;font-size:13px;line-height:1.5;color:#ffffff80}
#both-seasons .hp-calls{list-style:none;margin:16px 0 0;padding:0;display:grid;gap:10px}
#both-seasons .hp-calls li{position:relative;padding:12px 14px 12px 38px;border-radius:14px;background:#ffffff0a;border:1px solid #ffffff17;font:500 14.5px/1.5 var(--out);color:#ffffffb8}
#both-seasons .hp-calls li::before{content:"!";content:"!" / "";position:absolute;left:12px;top:13px;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;background:var(--yellow);color:var(--navy);font:800 11px/1 var(--out)}
#both-seasons .hp-calls b{color:#fff;font-weight:700}
#both-seasons .lab-cta{gap:10px}
#both-seasons .lab-cta .btn{padding:15px 22px;font-size:15px}
#both-seasons [data-chapter="call"] h3 + .lab-cta{margin-top:16px}
#both-seasons .lab-specs{gap:6px}
#both-seasons .lab-specs span{padding:7px 10px;font-size:11.5px}
#both-seasons .labt-tabs .hp-s{display:none}
#both-seasons.lab-failed .lab-live-only{display:none}
#both-seasons .hp-callbar{display:none}
@media (min-width:861px){
  .lab-on #both-seasons.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{aspect-ratio:4/3}
  #both-seasons [data-chapter] h3{font-size:clamp(25px,2.2vw,32px)}
  #both-seasons [data-chapter] p:not([class]){font-size:15.5px;line-height:1.56;margin-top:11px}
  #both-seasons .labt-steps{gap:2px;margin-top:12px}#both-seasons .labt-steps li{padding:4px 10px;font-size:13.5px}
  .lab-on #both-seasons.labx[data-mode="tabs"]:not(.lab-failed) [data-chapter]{padding-top:26px}
}
#both-seasons [data-chapter] .lab-cta + .hp-spec-h{margin-top:16px}
@media (min-width:861px) and (max-height:820px){#both-seasons .labt-steps li{padding:3px 10px}#both-seasons .labt-steps{margin-top:8px}}
/* phones: tab labels shorten; call buttons sit right under the 3D card (above the fold); the playing
   step's words ride in the stage's bottom bar (engine: .labt-cap, from each <li data-cap>) */
@media (max-width:560px){
  .lab-on #both-seasons.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:6px}
  .lab-on #both-seasons.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 1 0;padding:10px 10px 11px}
  #both-seasons .labt-tabs .hp-x{display:none}
  #both-seasons .labt-tabs .hp-s{display:inline}
}
@media (max-width:860px){
  /* .hp-callbar (a duplicate CTA) stays display:none (its unconditional rule above): the shared mobile
     rule now promotes the article's own .lab-cta above the stage on every tab, so the extra bar is redundant. */
  .lab-on #both-seasons.labx[data-mode="tabs"]:not(.lab-failed) .labt-body{position:relative}
}
/* ---- furnace-repair page (#furnace-sequence, program "furnace") — scoped extras ---- */
#furnace-sequence .labt-steps{max-width:640px}
#furnace-sequence .labt-steps li{align-items:baseline}
#furnace-sequence .labt-steps li::before{align-self:flex-start}
#furnace-sequence .fs-t{margin-left:auto;padding-left:10px;font:600 11.5px/1.4 var(--out);font-variant-numeric:tabular-nums;color:#ffffffa6;white-space:nowrap}
#furnace-sequence .labt-steps li.on .fs-t{color:var(--yellow)}
#furnace-sequence .fs-fine{font-size:13px;line-height:1.5;color:#ffffff99}
#furnace-sequence .fs-gas{margin:16px 0 0;background:#fdf1f6;border:1px solid #ec489945;color:#5b2242;border-radius:16px;padding:14px 16px;font:500 14.5px/1.55 var(--out)}
#furnace-sequence .fs-gas b{display:block;margin-bottom:4px;color:var(--pink-d)}
#furnace-sequence .fs-calls{list-style:none;margin:14px 0 0;padding:0;display:grid;gap:10px}
#furnace-sequence .fs-calls li{position:relative;padding:12px 14px 12px 38px;border-radius:14px;background:#ffffff0a;border:1px solid #ffffff17;font:500 14.5px/1.5 var(--out);color:#ffffffb8}
#furnace-sequence .fs-calls li::before{content:"!";position:absolute;left:12px;top:13px;width:18px;height:18px;border-radius:50%;display:grid;place-items:center;background:var(--yellow);color:var(--navy);font:800 11px/1 var(--out)}
#furnace-sequence .fs-calls b{color:#fff;font-weight:700}
#furnace-sequence .lab-cta{gap:10px}
#furnace-sequence .labt-ro i{font-size:11.5px;color:#ffffffa6}
#furnace-sequence .labt-tabs .fs-s{display:none}
@media (min-width:861px){
  #furnace-sequence .labt-steps{gap:2px}#furnace-sequence .labt-steps li{padding:5px 10px}
  /* the stage stays beside the step list and the call row while the copy column scrolls */
  .lab-on #furnace-sequence.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{position:sticky;top:88px}
}
/* mobile eyebrow/heading/CTA-above-stage order (every tab, including Safety's gas note + call list falling
   below the stage with the rest of the copy) is handled by the shared ≤860px tabs-mode rule above. */
@media (max-width:560px){
  .lab-on #furnace-sequence.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:5px}
  .lab-on #furnace-sequence.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 1 auto;min-width:0;padding:9px 7px 10px;font-size:12px;border-radius:13px}
  .lab-on #furnace-sequence.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go] .n{margin-bottom:4px;letter-spacing:.14em}
  #furnace-sequence .labt-tabs .fs-x{display:none}
  #furnace-sequence .labt-tabs .fs-s{display:inline}
}

/* ---- AC-repair page (#match-the-part, program "acrepair") — scoped extras, owned by the acrepair author ---- */
#match-the-part .labt-tabs .acr-s{display:none}
#match-the-part [data-chapter] h3{font-size:clamp(23px,2.05vw,30px)}
#match-the-part [data-chapter] p:not(.eyebrow){font-size:15.5px;line-height:1.58}
#match-the-part .acr-truck{display:flex;align-items:center;flex-wrap:wrap;gap:9px;margin-top:14px;font:700 13.5px/1.3 var(--out);color:#fff}
#match-the-part .acr-truck span{font:700 9.5px/1 var(--fred);letter-spacing:.18em;text-transform:uppercase;color:#0b1120;background:var(--yellow);padding:5px 8px;border-radius:99px}
#match-the-part .acr-truck-note{margin-top:6px;font:500 12.5px/1.5 var(--out);color:#ffffff8c}
#match-the-part .acr-check{margin-top:16px;padding:13px 15px 12px;border-radius:14px;background:#ffffff0a;border:1px solid #ffffff17}
#match-the-part .acr-check-h{margin:0 0 8px;font:600 10.5px/1 var(--fred);letter-spacing:.22em;text-transform:uppercase;color:var(--cyan)}
#match-the-part .acr-check ul{list-style:none;margin:0;padding:0;display:grid;gap:7px}
#match-the-part .acr-check li{position:relative;padding-left:17px;font:500 14px/1.5 var(--out);color:#ffffffc2}
#match-the-part .acr-check li::before{content:"";position:absolute;left:3px;top:.6em;width:6px;height:6px;border-radius:50%;background:var(--cyan)}
#match-the-part .acr-check strong{color:#fff}
#match-the-part .acr-check a{color:var(--yellow);font-weight:700}
/* call + book sit right under each tab's headline, on every screen (DOM order = visual order) */
#match-the-part .lab-cta{margin:14px 0 16px;gap:10px}
/* every tab is a narrated sequence, not real time: no clock */
#match-the-part .labt-clock{visibility:hidden}
/* "bad" in a red that is not in the energy palette (pink = heat, cyan = cold) */
#match-the-part .labt-ro[data-tone="bad"] b{color:#f87171}
/* "interactive 3D" eyebrow + illustration note only when the 3D is really there (static / no-JS / failed: hidden) */
#match-the-part .labt-head .eyebrow,#match-the-part .lab-note{display:none}
.lab-on #match-the-part:not(.lab-failed) .labt-head .eyebrow{display:block}
.lab-on #match-the-part:not(.lab-failed) .lab-note{display:table}
@media (min-width:861px){
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .labt-body{grid-template-columns:minmax(0,1fr) minmax(0,1.45fr)}
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{aspect-ratio:4/3}
  #match-the-part .labt-steps{gap:1px;margin-top:12px}
  #match-the-part .labt-steps li{padding:4px 10px}
  #match-the-part .acr-check li{font-size:13.5px}
  /* static fallback: the five symptom cards two-up instead of one long stack */
  html:not(.lab-on) #match-the-part .lab-copy,#match-the-part.lab-failed .lab-copy{grid-template-columns:1fr 1fr;align-items:start}
}
/* portrait tablets: a shorter (landscape) stage so the call + book buttons stay above the fold */
@media (min-width:561px) and (max-width:860px){
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{max-height:min(600px,60svh)}
}
/* phones + portrait tablets: five short tab labels that always fit one row */
@media (max-width:860px){
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:6px}
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 1 0;min-width:0;padding:10px 6px 11px;text-align:center}
  #match-the-part .labt-tabs .acr-x{display:none}
  #match-the-part .labt-tabs .acr-s{display:inline}
}
@media (max-width:560px){
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:5px}
  .lab-on #match-the-part.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{font-size:12.5px}
}

/* ---- membership page (#cozy-year, program "membership") — scoped extras, owned by the membership
   author. Reuses every shared tabs-mode rule above (labt-head/tabs/body, lab-stage/copy, labt-steps,
   lab-cta, lab-note, lab-parts) as-is — nothing new for the engine, just this page's own proportions. */
#cozy-year [data-chapter] p:not(.eyebrow){font-size:15.5px;line-height:1.6}
/* the fifth tab is the finale/CTA, not a sixth season: a faint pink edge, solid once selected */
#cozy-year .labt-tabs [data-go="join"]{border-color:#ec489966}
#cozy-year .labt-tabs [data-go="join"][aria-selected="true"]{border-color:#fff}
@media (min-width:861px){
  /* two machines + the wall behind them read better a little taller than the default 16:10 card
     (the same call heatpump.js makes for the same outdoor+airhandler pairing) */
  .lab-on #cozy-year.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{aspect-ratio:4/3}
  #cozy-year .labt-steps{gap:2px}
}
/* five short labels (an emoji + one word) always fit one row, even on tablets */
@media (max-width:860px){
  .lab-on #cozy-year.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:6px}
  .lab-on #cozy-year.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 1 0;min-width:0;padding:10px 8px 11px;text-align:center;font-size:13px}
}

/* ---- marine-ac page (#lake-cooled, program "marine") — scoped extras, owned by the marine author ---- */
#lake-cooled .lk-warn{margin-top:16px;padding:14px 16px;border-radius:16px;background:#fdf1f6;border:1px solid #ec489945;color:#5b2242;font:500 14.5px/1.55 var(--out)}
#lake-cooled .lk-warn strong{display:block;margin-bottom:4px;color:var(--pink-d)}
#lake-cooled .lab-cta{gap:10px}
#lake-cooled .labt-ro[data-tone="bad"] b{color:#f87171}
@media (min-width:861px){
  /* the diorama (boat + floating dock) is wide, not square — give the stage the room instead of
     letterboxing it inside the shared 16:10 card */
  .lab-on #lake-cooled.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{aspect-ratio:16/9}
  #lake-cooled [data-chapter] h3{font-size:clamp(23px,2.05vw,30px)}
  #lake-cooled [data-chapter] p:not(.eyebrow):not(.lk-warn){font-size:15.5px;line-height:1.58}
  #lake-cooled .labt-steps{gap:2px;margin-top:12px}#lake-cooled .labt-steps li{padding:4px 10px;font-size:13.5px}
}
/* portrait tablets: a shorter (landscape) stage so the call + book buttons stay above the fold */
@media (min-width:561px) and (max-width:860px){
  .lab-on #lake-cooled.labx[data-mode="tabs"]:not(.lab-failed) .lab-stage{max-height:min(600px,60svh)}
}
@media (max-width:860px){
  .lab-on #lake-cooled.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs{gap:6px}
  .lab-on #lake-cooled.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{flex:1 1 0;min-width:0;padding:10px 8px 11px;text-align:center;font-size:12.5px}
}
@media (max-width:560px){
  .lab-on #lake-cooled.labx[data-mode="tabs"]:not(.lab-failed) .labt-tabs [data-go]{font-size:11.5px;padding:9px 6px 10px}
}