/* #demo concept panel (aria-hidden; the sr-only paragraph carries the meaning) */
.dp{position:relative;flex:none;width:min(1180px,100% - 2 * var(--margin));   /* never squeezed by the 100svh stage: its grid rows would overlap on real phone heights */height:min(760px,100svh - var(--nav-h) - 84px);min-height:520px;
  display:grid;grid-template-rows:40px 64px 44px minmax(0,1fr) 168px;grid-template-columns:minmax(0,1fr);
  border-radius:var(--r-panel);background:var(--surface-1);border:1px solid var(--line-2);overflow:hidden;transform-origin:50% 100%;
  box-shadow:0 50px 140px -40px rgba(0,0,0,.9),inset 0 1px 0 rgba(255,255,255,.05);font-variant-numeric:tabular-nums}
.dp::before{content:"";position:absolute;inset:0;z-index:5;pointer-events:none;border-radius:inherit;opacity:0;transition:opacity .3s;
  background:radial-gradient(320px circle at var(--mx,50%) var(--my,50%),rgba(255,255,255,.05),transparent 60%)}
.dp:hover::before{opacity:1}

.dp-bar{display:flex;align-items:center;gap:12px;padding:0 14px;border-bottom:1px solid var(--line-1);
  background:linear-gradient(180deg,rgba(255,255,255,.06),transparent 40%,rgba(0,0,0,.25)),repeating-linear-gradient(0deg,rgba(255,255,255,.018) 0 1px,transparent 1px 3px),linear-gradient(180deg,#24282F,#17191E);
  background-size:cover}
.dp-dots{display:flex;gap:7px;flex:none}
.dp-dots i{width:10px;height:10px;border-radius:50%;background:#2A2E35;box-shadow:inset 0 0 0 1px #3A3F47}
.dp-scope{display:flex;align-items:center;gap:8px;margin:0 auto;font:500 12px/1 var(--font-ui);color:var(--silver);white-space:nowrap}
.dp-scope .sep{width:3px;height:3px;border-radius:50%;background:var(--steel)}
.dp-bar .concept{flex:none}

.dp-search{display:flex;align-items:center;gap:12px;padding:0 16px}
.dp-field{flex:1;min-width:0;display:flex;align-items:center;gap:12px;height:48px;padding:0 12px 0 14px;border-radius:12px;background:var(--jet);border:1px solid var(--line-2)}
.dp-field > .ic{width:18px;height:18px;color:var(--silver)}
.dp-qwrap{position:relative;flex:1;min-width:0;font:400 17px/1.35 var(--font-ui);color:var(--mist);white-space:nowrap}
.dp-ph{position:absolute;left:0;top:0;color:var(--silver);pointer-events:none}
.dp-caret{display:inline-block;width:2px;height:20px;margin-left:1px;vertical-align:-4px;background:var(--mist);animation:blink 1.06s steps(2,jump-none) infinite}
.dp-ul{position:absolute;height:1px;background:var(--platinum);transform-origin:0 50%;transform:scaleX(0)}
.dp-enter{display:grid;place-items:center;width:20px;height:20px;flex:none;border:1px solid var(--line-2);border-radius:5px;color:var(--silver)}
.dp-enter .ic{width:11px;height:11px}
.dp-badge{display:inline-flex;align-items:center;gap:7px;height:30px;padding:0 12px 0 10px;flex:none;border-radius:var(--r-pill);border:1px solid var(--line-2);
  background:rgba(255,255,255,.035);font:500 12px/1 var(--font-ui);color:var(--platinum)}
.dp-badge .ic{width:14px;height:14px;color:var(--silver)}

.dp-tick{display:flex;align-items:center;gap:10px;padding:0 16px;border-bottom:1px solid var(--line-1)}
.tk{display:inline-flex;align-items:center;gap:8px;font:500 12px/1 var(--font-ui);color:var(--silver);opacity:.5;transition:opacity .25s,color .25s}
.tk::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor;box-shadow:0 0 0 0 rgb(var(--glow)/0);transition:box-shadow .25s}
.tk.is-on{opacity:1;color:var(--mist)}
.tk.is-on::before{box-shadow:0 0 10px 1px rgb(var(--glow)/.6)}
.tk.is-done{opacity:.85;color:var(--platinum)}
.tk-l{position:relative;width:32px;height:1px;background:var(--line-2);overflow:hidden}
.tk-l i{position:absolute;inset:0;background:var(--platinum);transform-origin:0 50%;transform:scaleX(0)}
.dp-pager{display:flex;gap:6px;margin-left:auto}
.dp-pager button{width:22px;height:22px;padding:0;border:0;background:none;display:grid;place-items:center;pointer-events:auto}
.dp-pager button::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--steel);transition:background-color .25s,transform .25s}
.dp-pager button[aria-current="true"]::before{background:var(--mist);transform:scale(1.15)}

.dp-main{display:grid;grid-template-columns:minmax(0,1.35fr) minmax(0,1fr);gap:16px;padding:16px;min-height:0}
.dp-viewer{position:relative;min-height:0;border-radius:10px;background:#000;overflow:hidden}
.dp-viewer canvas{position:absolute;inset:0;width:100%;height:100%}
.dp-scan{position:absolute;inset:0;opacity:0;background:repeating-linear-gradient(0deg,rgba(255,255,255,.03) 0 1px,transparent 1px 3px)}
.dp-pill{position:absolute;top:10px;height:22px;padding:0 8px;display:inline-flex;align-items:center;border-radius:6px;background:rgba(0,0,0,.45);
  font:500 11px/1 var(--font-mono);color:var(--platinum);-webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px)}
.dp-clip{left:10px}
.dp-tc{right:10px}
.dp-scrub{position:absolute;left:12px;right:12px;bottom:12px;height:2px;background:var(--steel);border-radius:2px}
.dp-scrub i{position:absolute;top:0;bottom:0;left:var(--a,53.9%);width:var(--w,12.2%);background:var(--mist);border-radius:2px}

.dp-res{position:relative;min-height:0}
.dp-skel{position:absolute;inset:0;display:flex;flex-direction:column;gap:10px;opacity:0}
.dp-skel div{display:grid;grid-template-columns:128px 1fr;gap:12px;padding:8px;border-radius:var(--r-card);border:1px solid var(--line-1);background:var(--surface-2)}
.dp-skel b,.dp-skel s{display:block;border-radius:6px;background:linear-gradient(90deg,#16191E 0,#20242B 50%,#16191E 100%);background-size:200% 100%;animation:shim 1.4s linear infinite}
.dp-skel b{height:72px}
.dp-skel s{height:10px;margin-top:12px}
.dp-skel s+s{width:60%;margin-top:10px}
@keyframes shim{from{background-position:200% 0}to{background-position:0 0}}
.dp-card{position:relative;display:grid;grid-template-columns:128px minmax(0,1fr);gap:12px 14px;padding:12px;border-radius:var(--r-card);
  background:var(--surface-2);border:1px solid var(--line-3);overflow:hidden}
.dp-card::after{content:"";position:absolute;inset:0;border-radius:inherit;pointer-events:none;padding:1px;background:var(--sheen-layer);background-size:260% 100%;
  background-repeat:no-repeat;background-position:130% 0;-webkit-mask:linear-gradient(#000 0 0) content-box,linear-gradient(#000 0 0);-webkit-mask-composite:xor;
  mask:linear-gradient(#000 0 0) content-box exclude,linear-gradient(#000 0 0)}
.dp-card.is-sheen::after{animation:sheen 1.2s var(--ease-inout) both}
.dp-thumb{position:relative;width:128px;height:72px;border-radius:var(--r-thumb);overflow:hidden;background:#000}
.dp-thumb canvas{width:100%;height:100%}
.dp-best{position:absolute;right:4px;top:4px;height:18px;padding:0 7px;display:inline-flex;align-items:center;border-radius:var(--r-pill);
  background:var(--chrome);color:var(--jet);font:600 10.5px/1 var(--font-ui)}
.dp-meta{display:flex;flex-direction:column;justify-content:center;gap:8px;min-width:0}
.dp-range{font:500 15px/1 var(--font-mono);color:var(--mist);letter-spacing:-.02em}
.dp-sub{display:flex;flex-wrap:wrap;gap:6px 12px;font:500 12px/1 var(--font-ui);color:var(--silver)}
.dp-sub .tc{color:var(--platinum)}
.dp-shot{grid-column:1 / -1;font-size:14px;line-height:1.45;color:var(--platinum)}
.dp-why{grid-column:1 / -1}
.dp-why h4{font:500 12px/1 var(--font-ui);color:var(--silver)}
.dp-why ul{display:flex;flex-wrap:wrap;gap:6px;margin-top:9px}
.dp-why li{display:inline-flex;align-items:center;gap:6px;height:24px;padding:0 9px 0 7px;border-radius:var(--r-pill);border:1px solid var(--line-2);
  background:rgba(255,255,255,.04);font:500 12px/1 var(--font-ui);color:var(--mist);white-space:nowrap}
.dp-why li .ic{width:12px;height:12px;color:var(--mist);stroke-width:2}
.dp-add{grid-column:1 / -1;justify-self:start;display:inline-flex;align-items:center;height:32px;padding:0 14px;border-radius:var(--r-pill);border:1px solid var(--line-3);background:rgba(255,255,255,.06);
  font:600 12.5px/1 var(--font-ui);color:var(--mist);pointer-events:none}

/* Timeline */
.dp-tl{position:relative;border-top:1px solid var(--line-1);overflow:hidden;background:linear-gradient(180deg,rgba(255,255,255,.012),transparent)}
.dp-hd{position:absolute;left:0;top:44px;width:48px;display:flex;flex-direction:column;font:600 11px/1 var(--font-ui);color:var(--silver)}
.dp-hd span{display:flex;align-items:center;padding-left:16px}
.dp-hd span:nth-child(1){height:56px}.dp-hd span:nth-child(2){height:36px;margin-top:4px}.dp-hd span:nth-child(3){height:26px;margin-top:4px}
.dp-lanes{position:absolute;left:48px;right:16px;top:20px;bottom:0}
.dp-ov{position:absolute;left:-48px;right:0;top:4px;bottom:8px}
.dp-ov canvas{position:absolute;inset:0;width:100%;height:100%}
.dp-ovsc{position:absolute;top:0;bottom:0;width:1px;left:0;background:var(--mist);box-shadow:0 0 12px 1px rgb(var(--glow)/.5);opacity:0}
.dp-hits{position:absolute;inset:0}
.dp-hits i{position:absolute;border:1px solid var(--mist);border-radius:2px;opacity:0}
.dp-det{position:absolute;inset:0;opacity:0}
.dp-ruler{position:absolute;left:0;right:0;top:0;height:22px}
.dp-ruler canvas{width:100%;height:100%}
.dp-v1{position:absolute;left:0;right:0;top:24px;height:56px;border-radius:4px;overflow:hidden}
.dp-a1{position:absolute;left:0;right:0;top:84px;height:36px}
.dp-t1{position:absolute;left:0;right:0;top:124px;height:26px}
.dp-v1 canvas,.dp-a1 canvas{position:absolute;inset:0;width:100%;height:100%}
.dp-line{position:absolute;top:4px;height:18px;padding:0 6px;display:flex;align-items:center;border-radius:5px;background:rgba(255,255,255,.06);
  font:500 11px/1 var(--font-ui);color:var(--platinum);white-space:nowrap;transition:color .3s,border-color .3s;border:1px solid transparent}
.dp-line.has-text{width:auto!important;min-width:0;transform:translateX(-100%)}   /* caption block ends exactly where the line ends */
.dp-line.is-hit{border-color:var(--line-3);color:var(--mist)}
.dp-cand{position:absolute;top:22px;height:102px;border:1px solid rgba(245,246,248,.55);border-radius:4px;opacity:0}
.dp-x{position:absolute;left:50%;top:50%;width:22px;height:22px;margin:-11px 0 0 -11px;display:grid;place-items:center;border-radius:50%;background:var(--jet);
  border:1px solid var(--line-3);color:var(--platinum);opacity:0}
.dp-x .ic{width:12px;height:12px;stroke-width:2}
.dp-brk{position:absolute;inset:-18px 0 0 0;pointer-events:none}
.dp-range-fill{position:absolute;top:18px;height:132px;background:rgba(255,255,255,.07);border-top:1px solid rgba(255,255,255,.45);border-bottom:1px solid rgba(255,255,255,.45);transform-origin:50% 50%;transform:scaleX(0)}
.dp-h{position:absolute;top:14px;width:2px;height:140px;background:var(--mist);opacity:0}
.dp-h::before,.dp-h::after{content:"";position:absolute;width:7px;height:2px;background:var(--mist)}
.dp-h::before{top:0}.dp-h::after{bottom:0}
.dp-h.in::before,.dp-h.in::after{left:0}
.dp-h.out::before,.dp-h.out::after{right:0}
.dp-lab{position:absolute;top:0;height:16px;padding:0 6px;display:inline-flex;align-items:center;border-radius:4px;background:var(--jet);border:1px solid var(--line-2);
  font:600 10.5px/1 var(--font-mono);color:var(--mist);opacity:0;white-space:nowrap}
.dp-conn{position:absolute;height:1px;background:var(--platinum);transform-origin:0 50%;transform:scaleX(0)}
.dp-play{position:absolute;top:-2px;bottom:6px;width:1px;left:0;background:var(--mist);opacity:0}
.dp-play::before{content:"";position:absolute;left:-4px;top:0;width:9px;height:6px;background:var(--chrome);clip-path:polygon(0 0,100% 0,100% 50%,50% 100%,0 50%)}

/* Preset queries (P2) + reduced-motion control: dots under the panel */
.dp-nav{display:flex;justify-content:center;gap:2px;margin-top:8px;opacity:0;visibility:hidden;transition:opacity .4s,visibility .4s}
.dp-nav.is-on{opacity:1;visibility:visible}
.dp-nav button{width:26px;height:26px;padding:0;border:0;border-radius:50%;background:none;display:grid;place-items:center}
.dp-nav button::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--silver);transition:background-color .25s,transform .25s}   /* 6:1, the only sign the presets exist */
.dp-nav button:hover::before{background:var(--platinum)}
.dp-nav button[aria-pressed="true"]::before{background:var(--mist);transform:scale(1.2)}
.dp-nav + .demo-caption{margin-top:4px}
@media (pointer:coarse){ .dp-nav{gap:0} .dp-nav button{width:44px;height:44px;margin:-9px 0} }   /* 44px touch targets, same row height */

/* Portrait panel */
@media (max-width:767px){
  .dp{width:calc(100% - 24px);height:auto;min-height:0;border-radius:18px;grid-template-rows:36px auto 40px auto 100px auto}
  .dp-main{display:contents}
  .dp-viewer{grid-row:4;margin:0 12px;aspect-ratio:16/9;height:auto}
  .dp-tl{grid-row:5;margin-top:10px}
  .dp-res{grid-row:6;padding:12px}
  .dp-search{padding:10px 12px}
  .dp-field{height:auto;min-height:48px;padding:10px 10px 10px 12px;align-items:flex-start}
  .dp-field > .ic{margin-top:2px}
  .dp-qwrap{white-space:normal;font-size:15px}
  .dp-badge,.dp-scope{display:none}
  .dp-tick{padding:0 12px;gap:8px}
  .tk-l{width:18px}
  .dp-hd{top:30px}
  .dp-hd span:nth-child(1){height:36px}.dp-hd span:nth-child(2){height:22px;margin-top:4px}.dp-hd span:nth-child(3){display:none}
  .dp-lanes{left:44px;right:12px;top:16px}
  .dp-ov{left:-44px}
  .dp-ruler{height:14px}
  .dp-v1{top:16px;height:36px}
  .dp-a1{top:56px;height:22px}
  .dp-t1{display:none}
  .dp-cand{top:14px;height:66px}
  .dp-range-fill{height:84px}
  .dp-h{height:90px}
  .dp-card{grid-template-columns:96px minmax(0,1fr);padding:10px;gap:10px 12px}
  .dp-thumb{width:96px;height:54px}
  .dp-skel div{grid-template-columns:96px 1fr}
  .dp-skel b{height:54px}
  .dp-skel div:nth-child(n+2){display:none}
  .dp-shot{font-size:13px}
  .dp-add{display:none}
}
@media (prefers-reduced-motion:reduce){ .dp-skel b,.dp-skel s{animation:none} }