/* /bess-calculator.html: the battery savings calculator.
   Markup: scripts/bess-calculator-page.mjs. Behaviour: js/bess-calc.js (flow, result) and
   js/bess-calc-stage.js (the product stage). Loads after styles.css and products.css.
   Tokens, rgb(), rgba() and named colours only: the build fails on a hex colour.
   CSP (style-src 'self'): nothing in the markup has a style attribute; the scripts set
   positions, masks and the slider fill through element.style. Breakpoints 919 / 640 / 560. */

@property --slat{syntax:'<length>';inherits:false;initial-value:6px}

:root{
  --hdr:84px;
  --dock:0px;
  --st-ink:rgba(240,248,241,.95);
  --st-mute:rgba(214,236,218,.8);
  --st-line:rgba(127,217,138,.18);
  --scan:rgba(127,217,138,1);
  --scan-hot:rgba(236,255,239,1);
  --st-deep:rgb(5,22,11);
  --hatch:rgba(91,106,96,.42);
}

/* ---------- intro ---------- */
.bc-intro{padding:112px 0 28px}
.bc-intro .breadcrumbs{margin-bottom:12px}
.bc-intro-row{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,.7fr);gap:clamp(20px,4vw,56px);align-items:end}
.bc-intro h1{font-size:clamp(30px,3.6vw,48px);line-height:1.04;max-width:22ch;margin:10px 0 0;text-wrap:balance}
.bc-lead-p{margin:0;font-size:16.5px;line-height:1.6;color:var(--ink-mute);max-width:46ch}

/* ---------- split: stage | conversation ---------- */
.bc-calc{padding:8px 0 clamp(44px,6vw,76px)}
.bc-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,3vw,44px);align-items:start}
.bc-stage-wrap{align-self:stretch;min-width:0}

/* ---------- the stage ---------- */
.bc-stage{
  position:sticky;top:calc(var(--hdr) + 16px);margin:0;
  height:min(680px,calc(100vh - var(--hdr) - 32px));min-height:460px;
  display:flex;flex-direction:column;border-radius:20px;overflow:hidden;isolation:isolate;color:var(--st-ink);
  background:
    radial-gradient(120% 70% at 50% 0%,rgba(46,158,58,.38),transparent 60%),
    linear-gradient(180deg,var(--green-deep),var(--green-darker) 62%,var(--st-deep));
  box-shadow:0 1px 2px rgba(15,26,20,.06),0 44px 80px -44px rgba(14,80,34,.65);
}
.bc-top{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;padding:22px 24px 0;position:relative;z-index:6}
.bc-now{min-width:0;flex:1 1 auto}
/* a lighter green than the scan line, so the eyebrow passes AA (about 5.3:1) on the top of the stage */
.bc-now-label{display:block;font-family:var(--font-display);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:rgb(178,240,186)}
.bc-now-name{display:block;position:relative;overflow:hidden;height:1.28em;margin-top:7px;font-family:var(--font-display);font-weight:700;font-size:clamp(20px,1.9vw,26px);line-height:1.28;letter-spacing:-.02em;color:var(--st-ink)}
.bc-now-name.is-long{font-size:clamp(18px,1.6vw,22px)}
.bc-now-name.is-xlong{font-size:clamp(16px,1.4vw,19.5px)}
.bc-now-name span{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-now-sub{display:block;margin-top:4px;font-size:14px;line-height:1.45;color:var(--st-mute);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.bc-badge{flex:0 0 auto;font-family:var(--font-display);font-weight:800;font-size:22px;line-height:1;letter-spacing:-.02em;color:var(--ink);background:var(--yellow);border-radius:100px;padding:9px 15px 10px;box-shadow:0 0 0 6px rgba(245,194,12,.16),0 14px 28px -12px rgba(245,194,12,.75)}
.bc-badge[hidden]{display:none}

.bc-room{position:relative;flex:1 1 auto;min-height:0}
.bc-spot{position:absolute;inset:0;background:radial-gradient(40% 54% at 46% 64%,rgba(220,255,226,.15),rgba(220,255,226,0) 70%);animation:bcDrift 9s ease-in-out infinite alternate}
.bc-stage.is-off .bc-spot{animation-play-state:paused}
@keyframes bcDrift{from{transform:translateX(-3%)}to{transform:translateX(3%)}}
.bc-floor{
  position:absolute;left:-40%;right:-40%;bottom:-6%;height:50%;
  background-image:linear-gradient(rgba(127,217,138,.10) 1px,transparent 1px),linear-gradient(90deg,rgba(127,217,138,.10) 1px,transparent 1px);
  background-size:56px 56px;background-position:0 0;
  transform:perspective(420px) rotateX(64deg);transform-origin:50% 100%;
  -webkit-mask-image:linear-gradient(to top,black 18%,transparent 90%);mask-image:linear-gradient(to top,black 18%,transparent 90%);
}
.bc-streaks{position:absolute;inset:0;pointer-events:none;overflow:hidden}
.bc-streaks i{position:absolute;right:-10%;height:2px;width:46%;border-radius:2px;opacity:0;background:linear-gradient(90deg,rgba(127,217,138,0),rgba(127,217,138,.7))}
.bc-streaks i:nth-child(1){top:46%}
.bc-streaks i:nth-child(2){top:58%;width:34%}
.bc-streaks i:nth-child(3){top:70%;width:52%}

/* units: each sits in a slot that the stage script places with element.style */
.bc-units{position:absolute;z-index:2;left:7%;right:17%;top:5%;bottom:13%}
.u-slot{position:absolute;bottom:0;left:50%;transform:translateX(-50%);transform-origin:50% 100%}
.u-slot::after{content:"";position:absolute;left:6%;right:6%;bottom:-4%;height:8%;border-radius:50%;z-index:-1;background:radial-gradient(closest-side,rgba(0,0,0,.6),rgba(0,0,0,0))}
.u{position:relative;width:100%;height:100%;transform-origin:50% 100%}
.u img{display:block;width:100%;height:100%;object-fit:contain;object-position:50% 100%;filter:drop-shadow(0 20px 22px rgba(0,0,0,.38))}
.u.is-slat img{
  -webkit-mask-image:repeating-linear-gradient(to bottom,black 0,black var(--slat),transparent var(--slat),transparent 6px);
  mask-image:repeating-linear-gradient(to bottom,black 0,black var(--slat),transparent var(--slat),transparent 6px);
}
.u.is-back img{filter:drop-shadow(0 20px 22px rgba(0,0,0,.38)) brightness(.82)}
.is-idle .u img{filter:grayscale(.45) brightness(.7) drop-shadow(0 16px 18px rgba(0,0,0,.4))}
.idle-ultima .u img{filter:grayscale(.5) brightness(.55) drop-shadow(0 16px 18px rgba(0,0,0,.4))}
/* the idle showroom without JavaScript (the stage script re-places it) */
.idle-ultima{left:60%;bottom:38%;width:66%;height:42%}
.idle-aio{left:14%;width:18%;height:44%}
.idle-aura{left:40%;width:30%;height:64%}
.idle-aqua-4{left:70%;width:34%;height:68%}

/* the scan: a light band masked to the unit's own silhouette (mask set by the stage script) */
.u-scan,.u-charge{
  position:absolute;inset:0;pointer-events:none;opacity:0;mix-blend-mode:screen;
  background-size:100% 260%;background-position:0 100%;background-repeat:no-repeat;
  -webkit-mask-size:contain;mask-size:contain;-webkit-mask-repeat:no-repeat;mask-repeat:no-repeat;
  -webkit-mask-position:50% 100%;mask-position:50% 100%;
}
.u-scan{background-image:linear-gradient(180deg,rgba(127,217,138,.20) 0%,rgba(127,217,138,.24) 46%,rgba(127,217,138,.9) 49.2%,var(--scan-hot) 50%,rgba(127,217,138,.45) 50.8%,rgba(127,217,138,0) 53.5%)}
/* CHARGE paints normally (not screen), so its green fill tints a white cabinet too; the shorter
   gradient keeps the whole sweep on the unit, so the line visibly climbs for the full 760 ms */
.u-charge{mix-blend-mode:normal;background-size:100% 210%;background-image:linear-gradient(180deg,rgba(46,158,58,0) 0%,rgba(46,158,58,0) 46.5%,rgba(245,194,12,.6) 48.6%,var(--yellow) 49.3%,rgba(255,250,214,1) 50%,rgba(245,194,12,.55) 50.8%,rgba(46,158,58,.42) 52%,rgba(46,158,58,.34) 100%)}
.bc-scanline{
  position:absolute;left:0;right:0;top:0;height:2px;opacity:0;pointer-events:none;z-index:4;
  background:linear-gradient(90deg,rgba(127,217,138,0),rgba(127,217,138,.5) 16%,var(--scan-hot) 50%,rgba(127,217,138,.5) 84%,rgba(127,217,138,0));
  box-shadow:0 0 16px 2px rgba(127,217,138,.45);
}
/* sentence case: unit symbols (kWh, MWh) are case-sensitive */
.bc-scantag{position:absolute;right:52px;bottom:8px;font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;color:var(--green-darker);background:var(--scan);border-radius:100px;padding:6px 10px}
.bc-scantag:empty{display:none}

/* need meter, right edge: the tick is the drawn system's usable capacity (78% of the track) */
.bc-meter{position:absolute;right:22px;top:8%;bottom:12%;width:8px;border-radius:8px;background:rgba(255,255,255,.09);z-index:3}
.bc-meter[hidden]{display:none}
.bc-meter-fill{position:absolute;left:0;right:0;bottom:0;height:0;border-radius:8px;background:linear-gradient(180deg,var(--scan),var(--green));transition:height .55s var(--ease-out-quint),background .3s ease}
.bc-meter.is-near .bc-meter-fill{background:linear-gradient(180deg,var(--yellow),var(--green))}
.bc-meter.is-flash .bc-meter-fill{background:var(--yellow)}
.bc-meter-tick{position:absolute;left:-8px;right:-8px;bottom:78%;height:2px;border-radius:2px;background:rgba(255,255,255,.9)}
.bc-meter span{position:absolute;right:calc(100% + 10px);font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.02em;white-space:nowrap;color:var(--st-mute);background:rgba(5,26,12,.78);border-radius:100px;padding:4px 8px}
.bc-meter-tick span{top:50%;transform:translateY(-50%);color:var(--st-ink)}
.bc-meter-fill span{top:-11px;color:var(--scan)}
.bc-meter-fill span.is-hide{display:none}
.bc-cap{margin:0;padding:0 24px 10px;font-size:12px;color:rgba(214,236,218,.7);position:relative;z-index:5}

.bc-hud{display:grid;grid-auto-flow:column;grid-auto-columns:minmax(0,1fr);margin:0;position:relative;z-index:6;border-top:1px solid var(--st-line);background:rgba(5,26,12,.45)}
.bc-hud > div{padding:13px 18px 15px;border-left:1px solid var(--st-line);min-width:0}
.bc-hud > div:first-child{border-left:0}
.bc-hud > div[hidden]{display:none}
.bc-stage.has-est .bc-hud > div{padding-left:14px;padding-right:12px}
.bc-stage.has-est .bc-hud .hv{font-size:clamp(16px,1.35vw,20px)}
.bc-hud dt{font-family:var(--font-display);font-size:11px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--st-mute)}
.bc-hud dd{margin:6px 0 0;min-width:0}
.bc-hud .hv{display:block;font-family:var(--font-display);font-weight:700;font-size:clamp(17px,1.6vw,22px);line-height:1.15;letter-spacing:-.02em;font-variant-numeric:tabular-nums;color:var(--st-ink);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;transition:color .2s ease}
.bc-hud .hv.is-over{color:var(--yellow)}
.bc-hud .hv.is-wait{font-size:14px;font-weight:600;color:rgba(214,236,218,.66)}
.bc-hud small{display:block;margin-top:3px;font-size:12px;line-height:1.3;color:var(--st-mute)}
.bc-hud small:empty{display:none}
/* before a site is picked there is nothing to read: the HUD keeps its height but shows nothing */
.bc-stage[data-fam="idle"] .bc-hud{visibility:hidden}

/* ---------- the conversation ---------- */
.bc-talk{min-width:0;padding-top:2px}
/* desktop: the column is never shorter than the stage, so the sticky stage always has room */
@media (min-width:920px){.bc-talk{min-height:calc(min(680px,100vh - var(--hdr) - 32px) + 24px)}}
.bc-noscript{background:white;border:1px solid var(--border);border-radius:20px;padding:22px;margin-bottom:16px}
.bc-noscript p{margin:0 0 14px;font-size:15.5px;line-height:1.6;color:var(--ink-mute)}
.bc-progress{display:flex;align-items:center;gap:14px;margin:0 0 16px}
.bc-progress ol{display:flex;gap:6px;flex:1;list-style:none;margin:0;padding:0}
.bc-progress li{flex:1;height:4px;border-radius:4px;background:var(--border)}
.bc-progress li.is-done{background:var(--green)}
.bc-progress li.is-now{background:linear-gradient(90deg,var(--green) 0 45%,var(--border) 45%)}
.bc-progress li[hidden]{display:none}

/* answered questions as a sideways row of chips (phones and tablets only) */
.bc-chips{display:none}
.bc-chips-l{margin:0 0 6px;font-family:var(--font-display);font-size:11.5px;font-weight:600;letter-spacing:.12em;text-transform:uppercase;color:var(--text-faint)}
.bc-chips-row{display:flex;gap:8px;overflow-x:auto;scroll-snap-type:x proximity;padding:2px 2px 8px;margin:0 -2px;scrollbar-width:none}
.bc-chips-row::-webkit-scrollbar{display:none}
.a-chip{flex:0 0 auto;scroll-snap-align:start;display:inline-flex;align-items:center;gap:8px;min-height:44px;padding:8px 12px 8px 14px;border-radius:16px 16px 4px 16px;border:1px solid rgba(46,158,58,.24);background:var(--green-tint);color:var(--green-deep);font-family:var(--font-display);font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap}
.a-chip svg{width:15px;height:15px;flex:0 0 auto;color:var(--green-ink)}
.a-chip.is-open{background:var(--green-deep);border-color:var(--green-deep);color:white}
.a-chip.is-open svg{color:white}

.bc-thread{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:10px}
.is-js .q[data-state="todo"]{display:none}
.is-js .q[data-state="done"] .q-card{display:none}
.q-echo{display:flex;align-items:center;justify-content:space-between;gap:14px;padding:2px 0}
.q-echo[hidden]{display:none}
.q-echo-q{margin:0;font-size:14.5px;color:var(--text-soft);flex:1 1 auto;min-width:0}
.q-reply{
  display:inline-flex;align-items:center;gap:9px;flex:0 1 auto;max-width:74%;min-height:44px;
  background:var(--green-tint);border:1px solid rgba(46,158,58,.22);color:var(--green-deep);
  border-radius:16px 16px 4px 16px;padding:6px 6px 6px 13px;
  font-family:var(--font-display);font-size:14.5px;font-weight:600;cursor:pointer;text-align:left;
  transition:background .2s ease,border-color .2s ease;
}
.q-reply:hover{background:rgba(46,158,58,.14);border-color:var(--green)}
.q-reply i{color:var(--green-ink);font-size:15px}
.q-reply-a{min-width:0}
.q-reply-c{flex:0 0 auto;font-size:12.5px;color:var(--green-ink);background:white;border-radius:100px;padding:5px 11px}

.q-card{
  --qp:clamp(22px,2.3vw,30px);background:white;border:1px solid var(--border);border-radius:20px;padding:var(--qp);
  box-shadow:0 1px 2px rgba(15,26,20,.04),0 20px 44px -30px rgba(14,80,34,.3);
}
.q-step{margin:0 0 10px;font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--green-ink)}
.q-title{display:block;margin:0;font-family:var(--font-display);font-weight:700;font-size:clamp(24px,2.4vw,30px);line-height:1.16;letter-spacing:-.02em;color:var(--ink);text-wrap:balance}
.q-title:focus{outline:none}
.q-title:focus-visible{outline:3px solid var(--green);outline-offset:3px;border-radius:6px}
.q-fs{border:0;margin:0;padding:0;min-width:0}
.q-fs legend{padding:0;margin:0;width:100%}
.q-fs[hidden]{display:none}
.q-help{margin:10px 0 0;font-size:15px;line-height:1.55;color:var(--text-soft);max-width:54ch}
.q-note{margin:16px 0 0;font-size:13.5px;line-height:1.5;color:var(--text-faint)}
.q-live{margin:16px 0 0;font-size:14.5px;line-height:1.55;color:var(--ink-mute)}
.q-live:empty{display:none}
.q-live b{font-family:var(--font-display);font-weight:700;color:var(--ink)}
.q-live .warn{display:block;margin-top:6px;color:var(--ink-soft);font-weight:600}
.q-hint,.q-box{display:flex;gap:9px;align-items:flex-start;margin:14px 0 0;font-size:13.5px;line-height:1.5;color:var(--text-soft)}
.q-hint i,.q-box i{color:var(--green-ink);font-size:16px;margin-top:1px;flex:0 0 auto}
.q-box{background:var(--green-tint);border-radius:12px;padding:11px 13px;color:var(--ink-soft)}
.q-box[hidden]{display:none}
.q-more{margin-top:6px}
.q-more[hidden]{display:none}
.q-sub-q{font-family:var(--font-display);font-size:15.5px;font-weight:600;color:var(--ink-soft);margin:22px 0 0}
.q-fs-sub{margin-top:20px;padding-top:4px;border-top:1px solid var(--border-faint)}
.q-actions{display:flex;flex-wrap:wrap;align-items:center;gap:14px;margin-top:22px}
.q-actions[hidden]{display:none}
.q-actions .btn{font-size:15.5px;padding:14px 22px;min-height:48px}
.link-btn{background:none;border:0;padding:10px 2px;min-height:44px;font-family:var(--font-display);font-weight:600;font-size:14.5px;color:var(--green-deep);text-decoration:underline;text-underline-offset:3px;cursor:pointer}
.link-btn[hidden]{display:none}
.link-btn:hover{color:var(--green-ink)}

/* ---------- sliders: native range, made tactile ---------- */
.sl{margin-top:20px}
.sl + .sl{margin-top:22px;padding-top:18px;border-top:1px solid var(--border-faint)}
.sl-label{display:block;font-family:var(--font-display);font-size:15px;font-weight:600;color:var(--ink-soft)}
.sl-read{display:flex;align-items:baseline;gap:9px;margin:8px 0 0;font-family:var(--font-display);color:var(--ink)}
.sl-read b{font-size:clamp(46px,5.4vw,62px);font-weight:800;letter-spacing:-.045em;line-height:1;font-variant-numeric:tabular-nums}
.sl-read span{font-size:18px;font-weight:600;color:var(--text-soft)}
.sl-2 .sl-read b{font-size:36px;letter-spacing:-.035em}
.sl-2 .sl-read span{font-size:16px}
.sl-track{position:relative;padding:28px 0 0}
.sl-track input[type=range]{
  -webkit-appearance:none;appearance:none;display:block;width:100%;height:44px;margin:0;background:transparent;cursor:pointer;
  --fill:40%;
}
.sl-track input[type=range]::-webkit-slider-runnable-track{height:12px;border-radius:12px;background:linear-gradient(90deg,var(--green) 0,var(--green) var(--fill),var(--border) var(--fill))}
.sl-track input[type=range]::-moz-range-track{height:12px;border-radius:12px;background:var(--border)}
.sl-track input[type=range]::-moz-range-progress{height:12px;border-radius:12px;background:var(--green)}
.sl-track input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;appearance:none;width:34px;height:34px;margin-top:-11px;border-radius:50%;
  background:white;border:3px solid var(--green);
  box-shadow:0 8px 18px -6px rgba(14,80,34,.55),0 0 0 6px rgba(46,158,58,.14);
  transition:transform .15s ease,box-shadow .15s ease;
}
.sl-track input[type=range]::-moz-range-thumb{width:28px;height:28px;border-radius:50%;background:white;border:3px solid var(--green);box-shadow:0 8px 18px -6px rgba(14,80,34,.55),0 0 0 6px rgba(46,158,58,.14);transition:transform .15s ease,box-shadow .15s ease}
.sl-track input[type=range]:active::-webkit-slider-thumb{transform:scale(1.12);box-shadow:0 10px 22px -6px rgba(14,80,34,.6),0 0 0 11px rgba(46,158,58,.18)}
.sl-track input[type=range]:active::-moz-range-thumb{transform:scale(1.12);box-shadow:0 10px 22px -6px rgba(14,80,34,.6),0 0 0 11px rgba(46,158,58,.18)}
.sl-track input[type=range]:focus{outline:none}
.sl-track input[type=range]:focus-visible{outline:3px solid var(--green);outline-offset:3px;border-radius:12px}
.sl-2 .sl-track{padding-top:24px}
.sl-2 .sl-track input[type=range]::-webkit-slider-runnable-track{height:8px}
.sl-2 .sl-track input[type=range]::-moz-range-track,.sl-2 .sl-track input[type=range]::-moz-range-progress{height:8px}
.sl-2 .sl-track input[type=range]::-webkit-slider-thumb{width:26px;height:26px;margin-top:-9px}
.sl-2 .sl-track input[type=range]::-moz-range-thumb{width:22px;height:22px}
.sl-scale{display:flex;justify-content:space-between;gap:12px;margin-top:2px;font-size:12.5px;color:var(--text-faint)}
.sl-tag{display:inline-flex;align-items:center;gap:7px;margin:10px 0 0;padding:6px 11px;border-radius:12px;background:var(--green-tint);font-size:13px;line-height:1.4;color:var(--ink-soft)}
.sl-tag.is-yours{background:transparent;padding-left:2px;color:var(--green-ink);font-weight:600}
.sl-tag.is-yours::before{content:"";flex:0 0 auto;width:11px;height:6px;border-left:2px solid currentColor;border-bottom:2px solid currentColor;transform:translateY(-2px) rotate(-45deg)}
.sl-help{margin:6px 0 0;font-size:13.5px;line-height:1.5;color:var(--text-soft)}
.sl-type{display:flex;align-items:center;gap:8px;margin:8px 0 0}
.sl-type label{font-size:13.5px;color:var(--text-soft)}
.sl-type input{width:9.5em;font-family:var(--font-body);font-size:16px;padding:9px 11px;min-height:44px;border-radius:11px;border:1px solid var(--border-input);background:white;color:var(--ink)}
.sl-type input:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.q-sub-act{margin:2px 0 0}

/* notches: where the suggested system changes along the track */
.sl-notches{position:absolute;left:17px;right:17px;top:0;height:28px;pointer-events:none}
.sl-2 .sl-notches{left:13px;right:13px;height:24px}
.sl-notch{position:absolute;bottom:0;transform:translateX(-50%);display:flex;flex-direction:column;align-items:center;gap:3px;font-family:var(--font-display);font-size:11px;font-weight:600;white-space:nowrap;color:var(--text-faint);transition:color .2s ease}
.sl-notch::after{content:"";width:2px;height:9px;border-radius:2px;background:var(--border-input);transition:background .2s ease}
.sl-notch.is-end{transform:translateX(-100%);align-items:flex-end}
.sl-notch.is-start{transform:none;align-items:flex-start}
.sl-notch.is-passed{color:var(--green-ink)}
.sl-notch.is-passed::after{background:var(--green)}
.sl-notch.is-ref::after{background:var(--text-faint);height:7px}
/* a size or unit-count change: a small faint tick, shown up to the next family change only */
.sl-notch.is-minor::after{height:5px;opacity:.5}
.sl-notch.is-far{display:none}

/* quick picks */
.sl-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.chip{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border-radius:100px;border:1.5px solid var(--border-input);background:var(--bg);font-family:var(--font-display);font-size:13.5px;font-weight:600;color:var(--ink-soft);cursor:pointer;text-align:left;transition:border-color .2s ease,background .2s ease,color .2s ease}
.chip:hover{border-color:var(--green);color:var(--green-deep)}
.chip.is-on{background:var(--green-deep);border-color:var(--green-deep);color:white}

/* tiles and pills: native radios inside labels */
.q-tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-top:20px}
.tile{position:relative;display:flex;flex-direction:column;gap:5px;padding:18px 16px 16px;border:1.5px solid var(--border-input);border-radius:16px;background:var(--bg);cursor:pointer;transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,transform .2s ease}
.tile input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.tile i{font-size:32px;color:var(--green);margin-bottom:6px}
.tile b{font-family:var(--font-display);font-size:16px;font-weight:600;line-height:1.25;color:var(--ink)}
.tile span{font-size:13px;line-height:1.4;color:var(--text-soft)}
.tile:has(input:checked){border-color:var(--green);background:white;box-shadow:0 0 0 4px rgba(46,158,58,.13)}
.tile:has(input:focus-visible){outline:3px solid var(--green);outline-offset:3px}
@media (hover:hover){.tile:hover{border-color:var(--green);transform:translateY(-2px)}}
.q-pills{display:flex;flex-wrap:wrap;gap:10px;margin-top:18px}
.q-pills-col{flex-direction:column;align-items:flex-start}
.pill{position:relative;display:inline-flex}
.pill input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.pill span{display:inline-flex;align-items:center;min-height:46px;padding:11px 18px;border-radius:100px;border:1.5px solid var(--border-input);background:var(--bg);font-family:var(--font-display);font-size:14.5px;font-weight:600;color:var(--ink-soft);transition:background .2s ease,border-color .2s ease,color .2s ease}
.pill input:checked + span{background:var(--green-deep);border-color:var(--green-deep);color:white}
.pill input:focus-visible + span{outline:3px solid var(--green);outline-offset:3px}

/* DG reference list */
.q-ref{margin-top:14px;border-top:1px solid var(--border-faint);padding-top:6px}
.q-ref summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;cursor:pointer;list-style:none;font-family:var(--font-display);font-size:14px;font-weight:600;color:var(--green-ink)}
.q-ref summary::-webkit-details-marker{display:none}
.q-ref summary i{transition:transform .2s ease}
.q-ref[open] summary i{transform:rotate(180deg)}
.q-ref ul{list-style:none;margin:6px 0 0;padding:0;display:grid;gap:7px}
.q-ref li{font-size:13.5px;line-height:1.5;color:var(--text-soft);padding-left:14px;position:relative}
.q-ref li::before{content:"";position:absolute;left:0;top:.6em;width:6px;height:6px;border-radius:50%;background:var(--green)}
.q-ref p{margin:8px 0 0;font-size:12.5px;color:var(--text-faint)}

.q-end .q-card{background:var(--green-tint);border-color:rgba(46,158,58,.22);box-shadow:none}
.q-end .q-title{font-size:clamp(21px,1.9vw,25px)}
.q-end[hidden]{display:none}

/* ---------- the result ---------- */
.bc-result{background:white;border-top:1px solid var(--border);scroll-margin-top:calc(var(--hdr) + 8px)}
.bc-result[hidden]{display:none}
.bc-result-in{overflow:hidden}
.bc-result .container{padding-top:clamp(44px,6vw,76px);padding-bottom:clamp(36px,5vw,64px)}
.bc-headline{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:28px}
.bc-hl-text{min-width:0;flex:1 1 520px}
.bc-headline h2{margin:10px 0 0;font-family:var(--font-display);font-weight:800;font-size:clamp(40px,6vw,72px);line-height:1;letter-spacing:-.04em;color:var(--ink);font-variant-numeric:tabular-nums;text-wrap:balance}
.bc-headline h2:focus{outline:none}
.bc-headline h2:focus-visible{outline:3px solid var(--green);outline-offset:4px;border-radius:6px}
.bc-headline h2 .fig{color:var(--green-deep)}
.bc-headline h2.is-backup{font-size:clamp(34px,4.6vw,56px)}
.bc-res-sub{margin:14px 0 0;font-size:16.5px;line-height:1.6;color:var(--ink-mute);max-width:62ch}
.bc-res-status{margin:8px 0 0;font-size:14px;color:var(--text-faint)}
.bc-res-jump{flex:0 0 auto}

.bc-res-grid{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:clamp(22px,3vw,40px);align-items:start}
.bc-res-main{min-width:0}
/* desktop: the savings lines stay in view beside the taller system card */
@media (min-width:920px){.bc-res-main{position:sticky;top:calc(var(--hdr) + 16px);align-self:start}}
.ln[hidden]{display:none}
.bc-lines{list-style:none;margin:0;padding:0}
.ln{padding:18px 0;border-top:1px solid var(--border)}
.ln-top{display:flex;align-items:baseline;gap:6px 14px;flex-wrap:wrap}
.ln-t{font-family:var(--font-display);font-size:16.5px;font-weight:600;color:var(--ink);flex:1 1 auto}
.ln-chip{font-family:var(--font-display);font-size:11.5px;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--green-deep);background:var(--green-tint);border-radius:100px;padding:4px 9px}
.ln-chip[hidden]{display:none}
.ln-amt{font-family:var(--font-display);font-size:20px;font-weight:700;letter-spacing:-.01em;font-variant-numeric:tabular-nums;color:var(--green-ink);white-space:nowrap}
.ln-how{margin:5px 0 8px;font-size:13.5px;line-height:1.5;color:var(--text-soft)}
.ln-how:empty{display:none}
.ln-bar{display:block;height:8px;border-radius:8px;background:var(--border-faint);overflow:hidden}
.ln-bar i{display:block;height:100%;width:100%;border-radius:8px;background:var(--green);transform-origin:0 50%;transform:scaleX(0);transition:transform .7s var(--ease-out-quint)}
.ln-less .ln-amt{color:var(--text-soft)}
.ln-less .ln-bar i{background:repeating-linear-gradient(135deg,var(--hatch) 0 4px,rgba(91,106,96,.2) 4px 8px)}
.ln-note{margin:8px 0 0;font-size:13.5px;line-height:1.5;color:var(--ink-soft)}
.ln-note[hidden]{display:none}
.ln.is-off .ln-t{color:var(--text-soft)}
.ln.is-off .ln-amt{font-size:14px;font-weight:600;color:var(--text-faint);white-space:normal}
.ln.is-off .ln-bar{opacity:.5}
.bc-total{display:flex;justify-content:space-between;align-items:baseline;flex-wrap:wrap;gap:6px 16px;margin:0;padding:16px 0;border-top:2px solid var(--ink);border-bottom:1px solid var(--border)}
.bc-total b{font-family:var(--font-display);font-size:19px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}
.bc-total span{font-size:15px;color:var(--text-soft);font-variant-numeric:tabular-nums}
.bc-fine{margin:14px 0 0;font-size:13px;line-height:1.55;color:var(--text-faint);max-width:72ch}

/* the day strip */
.bc-day{margin-top:clamp(24px,3vw,36px);padding:20px 20px 18px;border:1px solid var(--border);border-radius:18px;background:var(--bg)}
.bc-day-head{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px 16px}
.bc-day h3{margin:0;font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--ink)}
.seg{display:inline-flex;border:0;margin:0;padding:3px;border-radius:100px;background:white;box-shadow:inset 0 0 0 1px var(--border-input)}
.seg label{position:relative;display:inline-flex}
.seg input{position:absolute;inset:0;width:100%;height:100%;margin:0;opacity:0;cursor:pointer}
.seg span{display:inline-flex;align-items:center;min-height:44px;padding:8px 14px;border-radius:100px;font-family:var(--font-display);font-size:13.5px;font-weight:600;color:var(--ink-soft);transition:background .2s ease,color .2s ease}
.seg input:checked + span{background:var(--green-deep);color:white}
.seg input:focus-visible + span{outline:3px solid var(--green);outline-offset:2px}
.bc-day-cap{margin:8px 0 10px;font-size:13px;line-height:1.5;color:var(--text-faint)}
.bc-day-svg svg{display:block;width:100%;height:auto}
.dl-lane{fill:white;stroke:var(--border);stroke-width:1}
.dl-night{fill:rgba(14,80,34,.07)}
.dl-solar{fill:rgba(245,194,12,.30);stroke:rgba(181,138,0,.85);stroke-width:1.2}
.dl-waste{fill:url(#dl-hatch)}
.dl-waste.is-kept{fill:rgba(46,158,58,.6)}
.dl-cut{fill:url(#dl-cut-hatch)}
.dl-cut.is-battery{fill:rgba(46,158,58,.88)}
/* the evening peak is hatched gold; solar is a plain pale arc */
.dl-peak{fill:url(#dl-peak-hatch)}
.dl-peak-bg{fill:rgba(245,194,12,.14)}
.dl-peak-line{stroke:rgba(181,138,0,.7);stroke-width:2}
.dl-soc-area{fill:rgba(46,158,58,.16)}
.dl-soc{fill:none;stroke:var(--green-ink);stroke-width:2.5;stroke-linejoin:round}
.dl-reserve{stroke:var(--green-deep);stroke-width:1.4;stroke-dasharray:5 4;fill:none}
.dl-txt{font-family:var(--font-display);font-size:11px;font-weight:600;fill:var(--ink-soft)}
.dl-txt.is-mute{fill:var(--text-faint);font-weight:500}
.dl-txt.is-halo{paint-order:stroke;stroke:white;stroke-width:3px;stroke-linejoin:round}
.dl-tick{font-family:var(--font-body);font-size:11px;fill:var(--text-faint)}
.dl-hatch-a{stroke:var(--hatch);stroke-width:2}
.dl-hatch-b{stroke:rgba(10,61,26,.9);stroke-width:3}
.dl-hatch-bg{fill:rgba(10,61,26,.72)}
.dl-legend{display:flex;flex-wrap:wrap;gap:6px 18px;list-style:none;margin:10px 0 0;padding:0;font-size:13px;line-height:1.4;color:var(--ink-soft)}
.dl-legend li{display:inline-flex;align-items:center;gap:7px}
.sw{display:inline-block;width:14px;height:10px;border-radius:3px;flex:0 0 auto}
.sw-cut{background:repeating-linear-gradient(135deg,rgba(10,61,26,.95) 0 2px,rgba(10,61,26,.6) 2px 5px)}
.sw-cut.is-battery{background:rgba(46,158,58,.88)}
.sw-solar{background:rgba(245,194,12,.42);box-shadow:inset 0 0 0 1px rgba(181,138,0,.85)}
.sw-waste{background:repeating-linear-gradient(135deg,var(--hatch) 0 2px,rgba(255,255,255,.9) 2px 4px);box-shadow:inset 0 0 0 1px var(--hatch)}
.sw-waste.is-kept{background:rgba(46,158,58,.6);box-shadow:none}
.sw-peak{background:repeating-linear-gradient(135deg,rgba(181,138,0,.7) 0 2px,rgba(245,194,12,.14) 2px 5px);box-shadow:inset 0 0 0 1px rgba(181,138,0,.5)}
.sw-soc{height:3px;border-radius:2px;background:var(--green-ink)}
.sw-reserve{height:0;border-radius:0;border-top:2px dashed var(--green-deep)}
.bc-ledger{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;margin:12px 0 0}
.bc-ledger div{background:white;border:1px solid var(--border);border-radius:12px;padding:10px 12px;min-width:0}
.bc-ledger dt{font-family:var(--font-display);font-size:11.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase;color:var(--text-faint)}
.bc-ledger dd{margin:4px 0 0;font-family:var(--font-display);font-size:15px;font-weight:700;color:var(--ink);font-variant-numeric:tabular-nums}

/* the suggested system */
.bc-system{display:flex;flex-direction:column;border:1px solid var(--border);border-radius:20px;overflow:hidden;background:white;box-shadow:0 1px 2px rgba(15,26,20,.04),0 20px 44px -30px rgba(14,80,34,.3)}
.sys-art{position:relative;isolation:isolate;display:flex;justify-content:center;align-items:flex-end;height:200px;padding:18px 14px 16px;background:radial-gradient(80% 55% at 50% 25%,rgba(46,158,58,.38),rgba(46,158,58,0)),linear-gradient(180deg,var(--green-deep),var(--green-darker))}
.sys-art img{height:100%;width:auto;max-width:100%;object-fit:contain;filter:drop-shadow(0 14px 16px rgba(0,0,0,.4))}
.sys-art img + img{margin-left:-30px;transform:scale(.94);transform-origin:50% 100%;filter:drop-shadow(0 14px 16px rgba(0,0,0,.4)) brightness(.82);position:relative;z-index:-1}
.sys-art img + img + img{transform:scale(.88);z-index:-2}
.sys-art.is-wide img{height:auto;width:86%;max-height:100%}
.sys-n{position:absolute;top:14px;right:14px;font-family:var(--font-display);font-weight:800;font-size:15px;color:var(--ink);background:var(--yellow);border-radius:100px;padding:5px 10px}
.sys-n[hidden]{display:none}
.sys-body{padding:22px 22px 20px;min-width:0}
.sys-k{margin:0;font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--green-ink)}
.bc-system h3{margin:6px 0 0;font-family:var(--font-display);font-size:21px;font-weight:700;letter-spacing:-.02em;line-height:1.25;color:var(--ink)}
.sys-sub{margin:4px 0 0;font-size:14px;color:var(--text-soft)}
.sys-why{margin:12px 0 0;font-size:14.5px;line-height:1.55;color:var(--ink-mute)}
.sys-spec{width:100%;margin:14px 0 0;border-collapse:collapse;font-size:13.5px;line-height:1.4}
.sys-spec th,.sys-spec td{padding:8px 0;border-top:1px solid var(--border-faint);vertical-align:top;text-align:left}
.sys-spec tbody th{font-weight:400;color:var(--text-soft);padding-right:14px;width:46%}
.sys-spec td{color:var(--ink-soft);font-weight:600;text-align:right}
.sys-spec.is-two td{padding-left:10px}
.sys-spec thead th{font-family:var(--font-display);font-size:12px;font-weight:600;color:var(--text-faint);text-align:right;padding-top:0;border-top:0}
.sys-spec thead th:first-child{text-align:left}
/* the rest of the datasheet, one tap away */
.sys-more{margin-top:4px;border-top:1px solid var(--border-faint)}
.sys-more summary{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:44px;cursor:pointer;list-style:none;font-family:var(--font-display);font-size:14px;font-weight:600;color:var(--green-ink)}
.sys-more summary::-webkit-details-marker{display:none}
.sys-more summary i{transition:transform .2s ease}
.sys-more[open] summary i{transform:rotate(180deg)}
.sys-more .sys-spec{margin-top:0}
.sys-notes{list-style:none;margin:12px 0 0;padding:0;display:grid;gap:8px}
.sys-notes:empty{display:none}
.sys-notes li{font-size:13.5px;line-height:1.5;color:var(--ink-soft);background:var(--green-tint);border-radius:10px;padding:8px 11px}
.sys-notes .link-btn{display:inline-flex;align-items:center;padding:0;min-height:44px;font-size:13.5px}
.sys-unity{margin-top:14px;padding-top:12px;border-top:1px solid var(--border-faint)}
.sys-unity[hidden]{display:none}
.sys-lockup{display:flex;align-items:center;gap:10px;margin:0;font-family:var(--font-display);font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--text-faint)}
.sys-lockup img{display:block;width:120px;height:auto}
.sys-sells{margin:8px 0 0;font-size:13.5px;line-height:1.5;color:var(--ink-soft)}
.sys-links{display:flex;flex-wrap:wrap;gap:4px 16px;margin:10px 0 0}
.sys-links a{display:inline-flex;align-items:center;gap:6px;min-height:44px;font-family:var(--font-display);font-size:14px;font-weight:600;color:var(--green-deep)}
.sys-fine{margin:10px 0 0;font-size:12.5px;line-height:1.5;color:var(--text-faint)}

/* the figures behind it */
.bc-assume{margin-top:30px;padding:22px 24px;border-radius:18px;background:var(--bg);border:1px solid var(--border)}
.as-head{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px 14px;margin:0 0 14px}
.as-head h3{margin:0;font-family:var(--font-display);font-size:18px;font-weight:700;color:var(--ink)}
.as-head p{margin:0;font-size:13.5px;font-weight:600;color:var(--green-ink)}
.as-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.as-f{display:flex;flex-direction:column;gap:6px;min-width:0}
.as-f[hidden]{display:none}
.as-f label{font-family:var(--font-display);font-size:13.5px;font-weight:600;line-height:1.35;color:var(--ink-soft)}
.as-f input{font-family:var(--font-body);font-size:16px;padding:11px 13px;min-height:46px;border-radius:11px;border:1px solid var(--border-input);background:white;color:var(--ink);width:100%}
.as-f input:focus-visible{outline:3px solid var(--green);outline-offset:2px}
.as-h{margin:0;font-size:12.5px;line-height:1.5;color:var(--text-soft)}
.as-foot{margin:10px 0 0}

/* ---------- the lead ---------- */
.bc-lead{background:white;padding:0 0 clamp(48px,6vw,84px);scroll-margin-top:calc(var(--hdr) + 8px)}
.bc-cta{display:grid;grid-template-columns:minmax(0,1.15fr) minmax(0,.85fr);gap:28px;align-items:center;padding:clamp(24px,3vw,38px);border-radius:18px;background:var(--green-deep);color:white}
.bc-cta h2{margin:0;font-family:var(--font-display);font-size:clamp(23px,2.4vw,31px);font-weight:700;line-height:1.15;letter-spacing:-.02em;text-wrap:balance}
.bc-cta p{margin:10px 0 0;font-size:15px;line-height:1.55;color:rgba(255,255,255,.84);max-width:52ch}
.bc-cta-btns{display:flex;flex-wrap:wrap;align-items:center;gap:12px 22px;margin-top:20px}
.bc-cta .btn-light{text-align:left}
.bc-tel{display:inline-flex;align-items:center;gap:8px;min-height:44px;color:white;font-family:var(--font-display);font-weight:600;text-decoration:none}
.bc-cta a:focus-visible{outline:3px solid var(--yellow);outline-offset:3px}
.bc-bubble{margin:0;border-radius:16px 16px 4px 16px;background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.16);padding:16px 18px;min-width:0}
.bc-bubble figcaption{font-family:var(--font-display);font-size:11.5px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--yellow)}
.bc-msg{margin:8px 0 0;font-family:var(--font-body);font-size:15px;line-height:1.55;color:rgba(255,255,255,.92);white-space:pre-wrap;word-break:break-word}

/* ---------- how we work it out ---------- */
.bc-narrow{max-width:840px}
.bc-how .faq-list{margin-top:22px}
.how-list{margin:0 0 12px;padding-left:20px;display:grid;gap:6px;font-size:15.5px;line-height:1.6;color:var(--ink-mute)}
.how-foot{font-size:13px;color:var(--text-faint)}
.bc-note{padding:6px 0 40px}

/* focus: a visible 3 px ring on every control, the disclosures included */
.bc-calc a:focus-visible,.bc-calc button:focus-visible,.bc-result a:focus-visible,.bc-result button:focus-visible{outline:3px solid var(--green);outline-offset:3px}
.bc-calc summary:focus-visible,.bc-result summary:focus-visible,.bc-how summary:focus-visible{outline:3px solid var(--green);outline-offset:3px;border-radius:12px}

/* ---------- tablet and phone: the stage becomes a dock under the header ---------- */
@media (max-width:919px){
  .bc-intro{padding:96px 0 18px}
  .bc-intro-row{grid-template-columns:1fr;align-items:start;gap:10px}
  .bc-grid{grid-template-columns:minmax(0,1fr);gap:12px}
  .bc-stage-wrap{position:sticky;top:var(--hdr);z-index:20;align-self:auto;margin:0 calc(-1 * clamp(20px,5vw,48px));padding:0 clamp(12px,3vw,24px) 12px;background:linear-gradient(180deg,var(--bg) calc(100% - 12px),rgba(250,252,248,0))}
  .bc-stage{position:relative;top:0;height:clamp(214px,29vh,280px);min-height:0;border-radius:18px}
  /* the product gets the full height of the room: it is the point of the stage */
  .bc-units{left:4%;right:20%;top:0;bottom:3%}
  .bc-cap{display:none}
  /* the card eyebrow carries "Question n of N" on phones; this row would sit half under the dock */
  .bc-progress{display:none}
  .bc-chips{display:block;margin:0 0 10px}
  .bc-chips[hidden]{display:none}
  .q-echo,.q-echo[hidden],.is-js .q[data-state="done"]{display:none}
  .q-tiles{grid-template-columns:1fr}
  .tile{flex-direction:row;flex-wrap:wrap;align-items:center;column-gap:12px;padding:12px 16px}
  .tile i{margin:0;font-size:28px}
  .tile span{flex-basis:100%;padding-left:40px;margin-top:-4px}
  .q[data-q]{scroll-margin-top:calc(var(--hdr) + var(--dock) + 12px)}
  /* a control that takes focus is never left under the header or the dock */
  .bc-calc :is(input,button,a,summary){scroll-margin-top:calc(var(--hdr) + var(--dock) + 12px)}
  /* the current card's button stays in reach at the foot of the screen */
  .is-js .q[data-state="current"] .q-actions{position:sticky;bottom:0;z-index:5;margin:16px calc(-1 * var(--qp)) calc(-1 * var(--qp));padding:12px var(--qp) 14px;background:white;border-top:1px solid var(--border-faint);box-shadow:0 -12px 18px -14px rgba(14,80,34,.28);border-radius:0 0 20px 20px}
  /* phones read the headline, then why (the lines), then the system */
  .bc-res-grid{grid-template-columns:minmax(0,1fr)}
  .as-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .bc-cta{grid-template-columns:minmax(0,1fr)}
}
/* a short screen: a smaller dock leaves room for the question and its first control */
@media (max-width:919px) and (max-height:760px){
  .bc-stage{height:184px}
}
/* a phone held sideways: no dock and no sticky button bar, the stage scrolls with the page */
@media (max-width:919px) and (max-height:560px){
  .bc-stage-wrap{position:static;background:none}
  .bc-stage{height:240px}
  .is-js .q[data-state="current"] .q-actions{position:static;margin:22px 0 0;padding:0;background:none;border-top:0;box-shadow:none;border-radius:0}
}
/* tablets: a two-column dock, the product on the left and the figures stacked on the right */
@media (min-width:641px) and (max-width:919px){
  .bc-stage{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);grid-template-rows:auto minmax(0,1fr);height:clamp(260px,32vh,340px)}
  .bc-top{grid-column:1;grid-row:1}
  .bc-room{grid-column:1;grid-row:2}
  .bc-hud{grid-column:2;grid-row:1 / span 2;grid-auto-flow:row;grid-auto-columns:auto;grid-auto-rows:minmax(0,1fr);border-top:0;border-left:1px solid var(--st-line)}
  .bc-hud > div{display:flex;flex-direction:column;justify-content:center;border-left:0;border-top:1px solid var(--st-line);padding:8px 16px}
  .bc-hud > div:first-child{border-top:0}
}
@media (min-width:641px) and (max-width:919px) and (max-height:760px){
  .bc-stage{height:240px}
}
@media (max-width:640px){
  .bc-top{padding:11px 14px 0}
  .bc-now-label{font-size:11px;letter-spacing:.1em}
  .bc-now-name{font-size:17px;margin-top:3px}
  .bc-now-name.is-long{font-size:15.5px}
  .bc-now-name.is-xlong{font-size:14px}
  /* the same line is in the system card; the room goes to the product */
  .bc-now-sub{display:none}
  .bc-badge{font-size:16px;padding:6px 10px 7px}
  .bc-meter{right:12px;width:6px}
  .bc-meter span,.bc-scantag{display:none}
  /* one compact row of figures, labels no smaller than 11 px */
  .bc-hud > div{padding:5px 10px 6px}
  .bc-hud dt{font-size:11px;letter-spacing:.06em;line-height:1.1}
  .bc-hud dd{margin-top:2px}
  .bc-hud .hv{font-size:15px;line-height:1.15}
  .bc-stage.has-est .bc-hud .hv{font-size:15px}
  .bc-hud small{display:none}
  .bc-stage.has-est .h-carries{display:none}
  .bc-chips-l{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
  .q-card{--qp:16px}
  .q-title{font-size:22px}
  .q-help{font-size:13.5px;margin-top:6px}
  .sl{margin-top:12px}
  .sl-read{margin-top:4px}
  .sl-read b{font-size:40px}
  .sl-2 .sl-read b{font-size:30px}
  .sl-notch{font-size:11.5px}
  .sl-chips{flex-wrap:nowrap;overflow-x:auto;scrollbar-width:none;margin-right:-16px;padding-right:16px}
  .sl-chips::-webkit-scrollbar{display:none}
  .chip{flex:0 0 auto;white-space:nowrap}
  .bc-ledger{grid-template-columns:minmax(0,1fr)}
  .bc-day{padding:16px 14px}
  .bc-headline{margin-bottom:18px}
}
@media (max-width:560px){
  /* the eyebrow under it names this page, so the breadcrumb ends one step early and never wraps */
  .bc-intro .breadcrumbs{flex-wrap:nowrap}
  .bc-intro .breadcrumbs > span:nth-last-child(-n+2){display:none}
  .as-grid{grid-template-columns:minmax(0,1fr)}
  .sys-art{height:170px}
  .bc-headline h2{font-size:max(40px,9.6vw)}
  .bc-headline h2.is-backup{font-size:max(32px,8vw)}
  .bc-res-jump{width:100%}
  .bc-cta .btn-light{width:100%;justify-content:space-between}
}

/* reduced motion: the site-wide rule in styles.css stops CSS motion; the scripts swap units
   with a 200 ms crossfade and update numbers at once. The ambient drift and thumb scale go too. */
@media (prefers-reduced-motion:reduce){
  .bc-spot{animation:none}
  .sl-track input[type=range]:active::-webkit-slider-thumb{transform:none}
  .sl-track input[type=range]:active::-moz-range-thumb{transform:none}
  .ln-bar i,.bc-meter-fill{transition:none}
}