/* DetailX · Lab — the detail layer of 画质评测: a large comparison stage, six cases and the measured numbers */

/* ---------- Shell ---------- */
html.lab-open{overflow:hidden}
.lab{position:fixed;inset:0;z-index:90;display:flex;flex-direction:column;background:var(--bg);color:var(--text);outline:none}
.js:not(.reduce-motion) .lab.is-opening .lab-head{animation:rise .9s var(--ease) .25s backwards}
.js:not(.reduce-motion) .lab.is-opening .lab-left{animation:rise 1s var(--ease) .32s backwards}
.js:not(.reduce-motion) .lab.is-opening .lab-case-group{animation:rise .9s var(--ease) backwards;animation-delay:.42s}
.js:not(.reduce-motion) .lab.is-opening .lab-case-group+.lab-case-group{animation-delay:.5s}
.lab-top{display:flex;align-items:center;gap:18px;height:64px;padding:0 16px 0 24px;border-bottom:1px solid var(--line);flex-shrink:0}
.lab-brand{display:flex;align-items:center;gap:10px;font-size:17px;font-weight:650;letter-spacing:-.03em;white-space:nowrap}
.lab-brand b{margin-left:6px;font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--lime-ink);background:var(--lime);padding:2px 6px;border-radius:5px;vertical-align:2px}
.lab-mark{display:flex;color:var(--lime)}
.lab-mark svg{width:22px;height:22px}
.lab-dims{display:flex;gap:2px;margin:0 auto;padding:4px;border:1px solid var(--line-2);border-radius:999px;background:var(--surface);overflow-x:auto;scrollbar-width:none;max-width:100%}
.lab-dims>button{display:flex;align-items:center;gap:7px;padding:7px 14px;border-radius:999px;font-size:12px;color:var(--text-2);white-space:nowrap;transition:color .35s}
.lab-dims>button:hover{color:var(--text)}
.lab-dims>button small{font-size:10px;color:var(--text-3)}
.lab-dims>button.active{color:var(--lime-ink);font-weight:600}
.lab-dims>button.active small{color:rgba(22,32,8,.6)}
.lab-dims>.indicator{background:var(--lime);border-radius:999px}
.lab-close{flex-shrink:0}
.lab-close .icon svg{transition:transform .5s var(--ease)}
.lab-close:hover .icon svg{transform:rotate(90deg)}
.lab-scroll{position:relative;flex:1;min-height:0;overflow-y:auto;scrollbar-width:thin;scrollbar-color:#262c25 transparent}
.lab-wrap{max-width:1480px;margin:0 auto;padding:26px var(--gutter) 90px}
.lab .segmented.mini>button{padding:6px 12px;font-size:12px}

/* ---------- Hero: title line, the full-width stage, then the six cases in one row beneath it ---------- */
.lab-head{display:flex;align-items:baseline;gap:12px 16px;flex-wrap:wrap;margin-bottom:14px}
.lab-head>.mono{font-size:12px;color:var(--lime)}
.lab-head h2{font-size:clamp(22px,2vw,30px);font-weight:550;letter-spacing:-.025em}
.lab-head p{font-size:14px;color:var(--text-2)}
.lab-head .text-link{margin-left:auto}
.lab-head .text-link:hover{color:var(--lime)}
.lab-main{display:grid;gap:16px}
.lab-left{min-width:0}
.lab-stage{position:relative;width:100%;aspect-ratio:16/9;max-height:calc(100vh - 250px);min-height:320px;border-radius:22px;overflow:hidden;background:#030403;box-shadow:0 0 0 1px var(--line)}
.lab-pane{position:absolute;inset:0;isolation:isolate}
.lab-media{position:absolute;inset:0;width:100%;height:100%;object-fit:contain}
.lab-layer{position:absolute;inset:0;z-index:1;clip-path:inset(0 0 0 var(--split))}
.lab-tag{position:absolute;top:14px;left:14px;z-index:3;display:inline-flex;align-items:center;gap:7px;padding:6px 11px;border-radius:999px;font-size:12px;font-weight:550;color:#fff;background:rgba(5,7,5,.6);border:1px solid rgba(255,255,255,.14);backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);pointer-events:none;white-space:nowrap;overflow:hidden}
.lab-layer .lab-tag{left:auto;right:14px}
.lab-tag::before{content:"";position:absolute;inset:0 auto 0 0;width:var(--download-progress,0%);background:rgba(var(--lime-rgb),.12);opacity:0;transition:width .2s linear,opacity .2s ease}
.lab-tag::after{content:"";position:absolute;inset:0;border:1px solid rgba(var(--lime-rgb),.75);border-radius:inherit;clip-path:inset(0 calc(100% - var(--download-progress,0%)) 0 0);opacity:0;transition:clip-path .2s linear,opacity .2s ease}
.lab-tag>span,.lab-tag>i{position:relative}
.lab-tag i{flex-shrink:0;width:7px;height:7px;border-radius:50%;background:var(--text-3);transition:background-color .2s}
.lab-tag:is([data-phase="downloading"],[data-phase="saving"])::before,.lab-tag:is([data-phase="downloading"],[data-phase="saving"])::after{opacity:1}
.lab-tag:is([data-phase="checking"],[data-phase="cached"],[data-phase="queued"],[data-phase="downloading"],[data-phase="saving"]) i{background:#f5c96a;animation:lab-download-breathe 1.6s ease-in-out infinite}
.lab-tag[data-phase="complete"] i{background:#7edb98}
.lab-tag:is([data-phase="error"],[data-phase="preview-error"]) i{background:#ffd38a}
@keyframes lab-download-breathe{0%,100%{opacity:1}50%{opacity:.35}}
.lab-divider{position:absolute;top:0;bottom:0;left:var(--split);z-index:2;width:2px;margin-left:-1px;background:rgba(255,255,255,.9);box-shadow:0 0 18px rgba(var(--lime-rgb),.45);pointer-events:none;transition:opacity .6s var(--ease) .2s}
.lab-divider span{position:absolute;top:50%;left:50%;display:grid;place-items:center;width:44px;height:44px;transform:translate(-50%,-50%);border-radius:50%;background:#fff;color:#121512;box-shadow:0 8px 22px rgba(0,0,0,.5),0 0 0 6px rgba(255,255,255,.12);transition:transform .5s var(--spring),background-color .3s}
.lab-divider svg{width:18px;height:18px}
.lab-stage.slide:hover .lab-divider span{transform:translate(-50%,-50%) scale(1.08);background:var(--lime)}
.lab-split{position:absolute;inset:0;z-index:4;width:100%;height:100%;margin:0;opacity:0;cursor:ew-resize}
.lab-spinner{display:block;width:11px;height:11px;border:1.5px solid currentColor;border-right-color:transparent;border-radius:50%;animation:lab-image-spin .8s linear infinite}
.lab-preview-loading{position:absolute;inset:0;z-index:5;display:grid;place-items:center;background:rgba(5,7,5,.32);backdrop-filter:blur(2px);-webkit-backdrop-filter:blur(2px);cursor:wait;animation:lab-loading-enter .18s ease-out}
.lab-preview-loading[hidden]{display:none}
.lab-preview-loading .lab-spinner{width:34px;height:34px;border-width:3px;color:var(--lime);filter:drop-shadow(0 2px 8px rgba(0,0,0,.35))}
.lab-stage[aria-busy="true"] .lab-divider{opacity:0;transition:none}
@keyframes lab-image-spin{to{transform:rotate(360deg)}}
@keyframes lab-loading-enter{from{opacity:0}to{opacity:1}}
.lab-stage:has(.lab-split:focus-visible){outline:2px solid var(--lime);outline-offset:3px}
.lab-stage.empty{display:grid;place-items:center;background:repeating-linear-gradient(-45deg,rgba(255,255,255,.025) 0 14px,transparent 14px 28px),#050605}
.lab-empty{display:grid;gap:8px;padding:24px;text-align:center}
.lab-empty>span{font-size:10px;letter-spacing:.24em;color:var(--lime)}
.lab-empty strong{font-size:17px;font-weight:550}
.lab-empty p{font-size:13px;color:var(--text-3)}
.lab-schemes{display:flex;align-items:start;justify-content:space-between;gap:20px;margin-top:10px}
.lab-selector{position:relative;min-width:0;max-width:calc(50% - 10px)}
.lab-scheme-options{max-width:100%}
.lab-scheme-name{display:flex;align-items:center;justify-content:center;gap:8px;width:100%}
.lab-scheme-check,.lab-scheme-trigger{display:none}
.lab-controls{display:flex;align-items:center;gap:12px;padding-top:8px}
.lab-controls .play-toggle{width:32px;height:32px;flex-shrink:0;background:transparent;color:var(--text)!important;border:1px solid var(--line-2)}
.lab-controls .play-toggle:hover:not(:disabled),.lab-controls .play-toggle.is-playing{background:rgba(var(--lime-rgb),.1);border-color:var(--lime-line);color:var(--lime)!important}
.lab-controls .play-toggle svg{width:15px;height:15px}
.lab-progress{position:relative;flex:1;min-width:0;height:3px;border-radius:4px;background:var(--line-2);cursor:pointer}
.lab-progress::before{content:"";position:absolute;inset:-12px 0}
.lab-progress span{position:absolute;left:0;top:0;bottom:0;width:0;border-radius:4px;background:var(--lime)}
.lab-retry{flex-shrink:0;font-size:11px;color:#ffd38a}
.lab-retry[hidden]{display:none}

/* The six cases: two real-world, four AIGC, side by side under the stage */
.lab-cases{display:flex;gap:18px;min-width:0;overflow-x:auto;padding:5px;margin-inline:-5px}
.lab-case-group{display:grid;flex:var(--n) 0 0%;grid-template-columns:repeat(var(--n),minmax(184px,1fr));gap:8px;align-content:start}
.lab-case-label{grid-column:1/-1;position:sticky;left:0;justify-self:start;font-size:12px;font-weight:550;color:var(--text-2)}
.lab-case{display:grid;grid-template-columns:min(25%,64px) minmax(0,1fr);align-items:center;gap:8px;padding:6px 8px 6px 6px;min-height:44px;border-radius:12px;border:1px solid var(--line);background:var(--surface);text-align:start;transition:border-color .35s,background-color .35s,transform .6s var(--ease)}
button.lab-case:hover{border-color:var(--line-3);transform:translateY(-2px)}
.lab-case.active{grid-template-columns:min(25%,64px) minmax(0,1fr) 14px;border-color:var(--lime-line);background:linear-gradient(90deg,rgba(var(--lime-rgb),.08),transparent 70%),var(--surface)}
.lab-case-media{position:relative;display:block;aspect-ratio:16/9;border-radius:9px;overflow:hidden;background:#050605}
.lab-case-media img{width:100%;height:100%;object-fit:cover;transition:transform 1s var(--ease)}
button.lab-case:hover .lab-case-media img{transform:scale(1.06)}
.lab-case-check{position:absolute;bottom:2px;right:2px;display:grid;place-items:center;width:15px;height:15px;border-radius:50%;background:var(--lime);color:var(--lime-ink)}
.lab-case-check svg{width:11px;height:11px;stroke-width:3}
.lab-case-spinner{visibility:hidden;justify-self:end;width:14px;height:14px;border-color:rgba(var(--lime-rgb),.2);border-top-color:var(--lime)}
.lab-case[aria-busy="true"]>.lab-case-spinner{visibility:visible}
.lab-case-text{min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:13px;font-weight:550;line-height:1.4}
.lab-case.pending{border-style:dashed;background:transparent}
.lab-case.pending .lab-case-media{display:grid;place-items:center;background:repeating-linear-gradient(-45deg,rgba(255,255,255,.035) 0 8px,transparent 8px 16px)}
.lab-case.pending .lab-case-media i{display:flex;color:var(--text-3)}
.lab-case.pending .lab-case-media svg{width:16px;height:16px}
.lab-case.pending strong{color:var(--text-3);font-weight:400}

/* ---------- Measured numbers ---------- */
.lab-section{margin-top:64px;padding-top:40px;border-top:1px solid var(--line)}
.lab-data-head{display:flex;justify-content:space-between;align-items:flex-end;gap:20px;flex-wrap:wrap;margin-bottom:22px}
.lab-data-head .kicker{color:var(--lime)}
.lab-data-head h3{font-size:clamp(24px,2.3vw,34px);font-weight:500;letter-spacing:-.025em;margin:10px 0 6px}
.lab-data-head p{font-size:13px;color:var(--text-3)}
.lab-data-sum{display:flex;align-items:center;gap:14px;font-size:13px;color:var(--text-2)}
.lab-data-sum b{font-size:44px;font-weight:300;line-height:1;letter-spacing:-.04em;color:var(--lime);margin-right:4px}
.lab-data-sum em{font-style:normal}
.lab-mgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.lab-mcard{position:relative;display:flex;flex-direction:column;padding:18px 20px;border-radius:18px;border:1px solid var(--line);background:var(--surface)}
.lab-mcard>header{display:flex;justify-content:space-between;align-items:baseline;gap:10px}
.lab-mcard>header strong{font-size:15px;font-weight:550}
.lab-mcard>header em{font-style:normal;font-size:11px;color:var(--text-3);white-space:nowrap}
.lab-mcard>p{display:grid;gap:5px;margin:7px 0 18px;font-size:12px;line-height:1.6;color:var(--text-3)}
.lab-mcard>p small{font-family:var(--mono);font-size:10px}
.lab-mbars{display:grid;gap:10px;margin-top:auto}
.lab-mbars li{display:grid;grid-template-columns:96px minmax(0,1fr) 76px;align-items:center;gap:10px;font-size:12px;color:var(--text-3)}
.lab-mbars li.ours{color:var(--text-2)}
.lab-mtrack{height:8px;border-radius:999px;background:var(--surface-3);overflow:hidden}
.lab-mtrack span{display:block;height:100%;border-radius:999px;background:var(--c)}
.lab-mbars b{text-align:right;font-size:12px;font-weight:500;color:var(--text-2)}
.lab-mbars li.best{color:var(--text)}
.lab-mbars li.best b{color:var(--text)}
.lab-mbars li.best .lab-mname::after{content:"最好";margin-left:5px;padding:0 5px;border-radius:999px;border:1px solid var(--line-3);font-size:9px;color:var(--text-2)}
.lab-mbars li.best.ours .lab-mname::after{border-color:var(--lime-line);color:var(--lime)}
.lab-mbars li.best.ours .lab-mtrack span{box-shadow:0 0 12px var(--lime)}
.lab-mbars li.best.ours b{color:var(--lime)}
.lab-mname{white-space:nowrap}
.lab-wait{display:grid;gap:10px;justify-items:start;padding:28px;border-radius:20px;border:1px dashed var(--line-2)}
.lab-wait-bar{display:block;width:min(320px,100%);height:4px;border-radius:4px;background:var(--line-2);overflow:hidden}
.lab-wait-bar i{display:block;height:100%;width:var(--p);background:var(--lime)}
.lab-wait strong{font-size:17px;font-weight:550}
.lab-wait p{font-size:13px;color:var(--text-3)}
.lab-legend{display:flex;align-items:center;gap:8px 22px;flex-wrap:wrap;margin-top:18px;font-size:12px;color:var(--text-2)}
.lab-legend span{display:inline-flex;align-items:center;gap:7px}
.lab-legend i{width:10px;height:10px;border-radius:3px;background:var(--c)}
.lab-legend small{font-size:11px;color:var(--text-3)}

/* Bars grow in when scrolled into view */
.lab-mcard[data-reveal] .lab-mtrack span{transform-origin:left;transform:scaleX(0);transition:transform 1.1s var(--ease);transition-delay:calc(var(--k,0) * 110ms + .2s)}
.lab-mcard.is-in .lab-mtrack span{transform:none}

/* ---------- Open / close iris ---------- */
.lab-iris{position:fixed;z-index:95;border-radius:50%;border:1.5px solid var(--lime);box-shadow:0 0 40px rgba(var(--lime-rgb),.5),inset 0 0 40px rgba(var(--lime-rgb),.22);pointer-events:none;will-change:transform,opacity}
.lab.is-closing .lab-scroll,.lab.is-closing .lab-top{transition:transform .76s var(--ease-io),opacity .76s var(--ease-io);transform:scale(.965);opacity:.3}
@keyframes labReturn{0%{border-color:var(--lime);box-shadow:0 0 0 0 rgba(var(--lime-rgb),.5)}100%{box-shadow:0 0 0 18px rgba(var(--lime-rgb),0)}}

/* Sharp paired stills remain interactive while the full clips download. */
.lab-preview{position:absolute;inset:0}
.lab-still,.lab-frame{position:absolute;inset:0;width:100%;height:100%;object-fit:contain;background:#030403}
.lab-still{z-index:1}.lab-frame{z-index:2;visibility:hidden}
/* Scheme switches must not replay the shared thumbnail fade over a black surface. */
.lab-still[data-media-state]{opacity:1;transition:none}
.lab-stage.has-frames .lab-frame{visibility:visible}
.lab-media{width:1px;height:1px;pointer-events:none;opacity:.001}
/* Playback announcements stay available to screen readers without a visible status row. */
.lab-buffer{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap}
.lab-controls button:disabled{opacity:.4;cursor:wait}
.lab-progress[aria-disabled="true"]{cursor:wait;opacity:.4}
.lab-player:has(.lab-buffer[data-phase="unavailable"]) :is(.play-toggle,.lab-progress){cursor:default}

/* ---------- Responsive ---------- */
@media(min-width:1101px){
  .lab-mgrid:has(>.lab-mcard:nth-child(4):last-child){grid-template-columns:repeat(2,minmax(0,1fr));max-width:1080px;gap:16px}
}
@media(max-width:1100px){
  .lab-main{grid-template-columns:minmax(0,1fr)}
  .lab-stage{max-height:none;min-height:0}
  button.lab-case:hover{transform:none}
  .lab-mgrid{grid-template-columns:repeat(2,minmax(0,1fr))}
}
@media(max-width:720px){
  .lab-top{flex-wrap:wrap;height:auto;padding:10px 12px;gap:8px}
  .lab-dims{order:3;width:100%;margin:0}
  .lab-close{margin-left:auto}
  .lab-wrap{padding:20px 16px 60px}
  .lab-head p{width:100%}
  .lab-head .text-link{margin-left:0}
  .lab-stage{border-radius:16px}
  .lab-tag{top:10px;left:10px;padding:5px 9px;font-size:11px}
  .lab-layer .lab-tag{right:10px}
  .lab-section{margin-top:48px;padding-top:32px}
  .lab-mgrid{grid-template-columns:minmax(0,1fr)}
  .lab-data-sum b{font-size:36px}
}

/* Available outputs and exact-frame playback. */
.lab-unavailable{display:grid;place-items:center;background:radial-gradient(ellipse at center,rgba(255,255,255,.025),transparent 75%),var(--bg)}
.lab-unavailable .lab-empty{max-width:360px}
.lab-unavailable .lab-empty strong{font-size:15px}
.lab-unavailable .lab-empty p{font-size:12px;line-height:1.7}
.lab-video-error{position:absolute;inset:auto 12px 16px;z-index:4;background:rgba(0,0,0,.8);color:#ffd38a;border-radius:8px;padding:10px;text-align:center;font-size:12px}
.lab-progress:focus-visible{outline:2px solid var(--lime);outline-offset:5px}
.lab-mcard>header{flex-wrap:wrap;gap:4px 10px}
.lab-data-head p{line-height:1.8}
@media(max-width:560px){.lab-data-sum{display:grid;grid-template-columns:auto 1fr;gap:10px 16px}.lab-data-sum>span:first-child,.lab-data-sum>em{white-space:nowrap}.lab-data-sum>.mc-cells{grid-column:1/-1}}
@media(max-width:720px){.lab-unavailable .lab-empty{padding:18px 12px 6px}.lab-unavailable .lab-empty strong{font-size:12px}.lab-unavailable .lab-empty p{font-size:10px}.lab-unavailable .lab-empty>span{font-size:8px;letter-spacing:.12em}}

/* Portrait and narrow windows use the same scheme buttons in an animated disclosure. */
@media(max-width:760px),(orientation:portrait){
  .lab-schemes{gap:12px;margin-top:8px}
  .lab-selector{flex:1;max-width:220px}
  .lab-selector.is-open{z-index:8}
  .lab-scheme-trigger{display:block;width:100%;min-height:38px;padding:8px 12px;border:1px solid var(--line-2);border-radius:999px;background:var(--surface);text-align:start;transition:border-color .2s,background-color .2s}
  .lab-scheme-trigger:hover,.lab-selector.is-open .lab-scheme-trigger{border-color:var(--lime-line);background:var(--surface-2)}
  .lab-scheme-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:12px;color:var(--text)}
  .lab-scheme-heading svg{width:14px;height:14px;color:var(--text-3);transition:transform .25s var(--ease)}
  .lab-selector.is-open .lab-scheme-heading svg{transform:rotate(180deg)}
  .lab-scheme-options{position:absolute;top:calc(100% + 7px);left:0;z-index:8;display:grid;gap:4px;width:max(100%,200px);max-width:calc(100vw - 32px);padding:5px;border-radius:17px;background:var(--surface-2);box-shadow:0 14px 40px rgba(0,0,0,.35);opacity:0;visibility:hidden;pointer-events:none;transform:translateY(-6px) scale(.97);transform-origin:top left;transition:opacity .18s ease,transform .24s var(--ease),visibility .24s}
  .lab-selector[data-side="right"] .lab-scheme-options{left:auto;right:0;transform-origin:top right}
  .lab-selector.is-open .lab-scheme-options{opacity:1;visibility:visible;pointer-events:auto;transform:none}
  .lab-scheme-options>.indicator{display:none}
  .lab .segmented.mini>.lab-model-option{padding:9px 11px;border-radius:12px;text-align:start;transition:background-color .2s,color .2s}
  .lab .segmented.mini>.lab-model-option:hover{background:var(--surface-3)}
  .lab .segmented.mini>.lab-model-option.active{background:rgba(var(--lime-rgb),.1);color:var(--lime)}
  .lab-model-option .lab-scheme-name{justify-content:space-between}
  .lab-model-option.active .lab-scheme-check{display:flex}
  .lab-scheme-check svg{width:13px;height:13px}
}
@media(prefers-reduced-motion:reduce){.lab-schemes *{transition:none!important}.lab-tag::before,.lab-tag::after,.lab-tag i,.lab-preview-loading,.lab-spinner{transition:none;animation:none}}