:root{
  --ground:#e8e9e4;
  --ink:#12120f;
  --muted:#67645d;
  --kraft:#b98b5f;
  --paper:#e7ddca;
  --acid:#f0df00;
  --red:#e34035;
  --ease-out:cubic-bezier(.22,1,.36,1);
  --ease-in-out:cubic-bezier(.76,0,.24,1);
  --t-ui:240ms;
  --t-scene:900ms;
  font-family:"Microsoft YaHei UI","Noto Sans SC","PingFang SC",Arial,sans-serif;
  color:var(--ink);
  background:var(--ground);
}
*{box-sizing:border-box}
html,body{width:100%;height:100%;margin:0;overflow:hidden}
body{background:var(--ground)}
button,a{font:inherit;color:inherit}
button{border:0}
button:focus-visible,a:focus-visible{outline:3px solid var(--red);outline-offset:4px}
.experience{position:relative;width:100%;height:100svh;min-height:620px;overflow:hidden;background:var(--ground);isolation:isolate}
.identity{position:absolute;z-index:20;left:clamp(18px,3vw,46px);top:clamp(18px,3vw,42px);display:flex;gap:clamp(28px,6vw,92px);align-items:flex-start;max-width:min(760px,55vw)}
.identity h1{margin:0;font-size:clamp(26px,3.5vw,58px);line-height:.92;letter-spacing:-.055em;text-wrap:balance}
.identity p{margin:2px 0 0;max-width:22em;font-size:clamp(14px,1.2vw,18px);line-height:1.55;text-wrap:pretty}
.status{position:absolute;z-index:20;right:clamp(18px,3vw,46px);top:clamp(22px,3.2vw,46px);font-size:14px;max-width:18em;text-align:right}
.status::before{content:"";display:inline-block;width:9px;height:9px;margin-right:10px;background:var(--red);border-radius:50%}
.object-stage{position:absolute;inset:0;display:grid;place-items:center;perspective:1800px;transition:opacity 450ms ease}
.folder-wrap{position:relative;width:min(48vw,660px);aspect-ratio:1536/2048;transform-style:preserve-3d;transition:transform 1050ms var(--ease-in-out),opacity 380ms ease;z-index:8;cursor:pointer}
.folder-core{position:absolute;inset:0;transform-style:preserve-3d;transition:transform 950ms var(--ease-in-out);will-change:transform}
.folder-face{position:absolute;inset:0;backface-visibility:hidden;-webkit-backface-visibility:hidden;filter:saturate(.86) contrast(.98)}
.folder-face img{display:block;width:100%;height:100%;object-fit:contain;pointer-events:none;user-select:none}
.folder-back{transform:rotateY(180deg)}
.folder-front{pointer-events:auto}.folder-back{pointer-events:none}
.experience[data-state="back"] .folder-front,.experience[data-state="opening"] .folder-front,.experience[data-state="workspace"] .folder-front{pointer-events:none}
.experience[data-state="back"] .folder-back,.experience[data-state="opening"] .folder-back,.experience[data-state="workspace"] .folder-back{pointer-events:auto}
.experience[data-state="back"] .folder-core,.experience[data-state="opening"] .folder-core,.experience[data-state="workspace"] .folder-core{transform:rotateY(180deg)}
.seal-button{position:absolute;left:50%;top:7.3%;width:clamp(54px,5vw,78px);aspect-ratio:1;transform:translate(-50%,-50%);border-radius:50%;background:transparent;cursor:pointer;color:transparent;pointer-events:none}
.seal-button::before{content:"";position:absolute;inset:-8px;border:3px solid var(--acid);border-radius:50%;opacity:0;transform:scale(.8);transition:opacity 200ms ease,transform 300ms var(--ease-out)}
.seal-button span{position:absolute;left:50%;top:calc(100% + 14px);transform:translateX(-50%);width:7em;padding:8px 10px;background:var(--ink);color:#fff;font-size:13px;font-weight:700;opacity:0;transition:opacity 180ms ease;pointer-events:none}
.experience[data-state="back"] .seal-button{pointer-events:auto;color:inherit}
.experience[data-state="back"] .seal-button::before,.experience[data-state="back"] .seal-button span{opacity:1}
.experience[data-state="back"] .seal-button::before{transform:scale(1)}
.packet-cards{position:absolute;inset:0;display:grid;place-items:center;pointer-events:none;z-index:3}
.packet-card{position:absolute;width:min(31vw,420px);aspect-ratio:3/4;opacity:0;transform:translateY(4vh) scale(.7);transform-origin:50% 100%;transition:transform 900ms var(--ease-in-out),opacity 260ms ease;transition-delay:calc(var(--i)*22ms);overflow:hidden;background:var(--paper)}
.packet-card img{display:block;width:100%;height:100%;object-fit:cover}
.experience[data-state="opening"] .packet-card{opacity:1;transform:translate(calc((var(--i) - 7.5)*1.25vw),calc(-12vh - var(--i)*.38vh)) rotate(calc((var(--i) - 7.5)*.7deg)) scale(.72)}
.experience[data-state="opening"] .folder-wrap{transform:translateY(28vh) scale(.76)}
.experience[data-state="workspace"] .folder-wrap{transform:translate(-41vw,36vh) rotateZ(-8deg) scale(.32);opacity:.64;pointer-events:none}
.experience[data-state="workspace"] .packet-card{opacity:0;transform:translateY(-38vh) scale(.9)}
.archive-workspace{position:absolute;inset:0;z-index:12;display:grid;grid-template-columns:minmax(340px,1.05fr) minmax(430px,.95fr);gap:clamp(28px,5vw,90px);align-items:center;padding:clamp(100px,12vh,140px) clamp(28px,5vw,78px) clamp(38px,5vh,60px);opacity:0;visibility:hidden;transform:translateY(20px);transition:opacity 500ms ease,transform 800ms var(--ease-out),visibility 0s 800ms}
.experience[data-state="workspace"] .archive-workspace{opacity:1;visibility:visible;transform:none;transition-delay:100ms,100ms,0s}
.specimen{min-width:0;height:100%;display:grid;grid-template-rows:minmax(0,1fr) auto;align-items:center}
.specimen-image{position:relative;justify-self:center;height:min(69vh,760px);aspect-ratio:3/4;padding:0;background:var(--paper);overflow:hidden;cursor:zoom-in}
.specimen-image img{display:block;width:100%;height:100%;object-fit:cover;transition:opacity 220ms ease,transform 900ms var(--ease-out);transform:scale(1.002)}
.specimen-image.is-changing img{opacity:0;transform:scale(.985)}
.specimen-image span{position:absolute;inset:auto 0 0;background:rgba(18,18,15,.9);color:#fff;padding:13px 16px;font-size:14px;transform:translateY(100%);transition:transform var(--t-ui) var(--ease-out)}
@media(hover:hover) and (pointer:fine){.specimen-image:hover span{transform:none}.index-button:hover{background:#dfd9ca}}
.specimen-copy{width:min(100%,570px);justify-self:center;display:flex;align-items:baseline;justify-content:space-between;gap:22px;padding-top:15px}
.specimen-copy h2{margin:0;font-size:clamp(24px,2.3vw,38px);letter-spacing:-.04em}
.specimen-copy p{margin:0;display:flex;gap:24px;font-size:14px;font-variant-numeric:tabular-nums;color:var(--muted);white-space:nowrap}
.archive-index{min-width:0;max-height:76vh;display:grid;grid-template-rows:auto minmax(0,1fr) auto;gap:22px}
.index-heading{display:flex;justify-content:space-between;align-items:baseline;gap:20px}
.index-heading strong{font-size:clamp(24px,2.3vw,38px);letter-spacing:-.04em}
.index-heading button,.corner-actions button{padding:0;background:transparent;cursor:pointer;text-decoration:underline;text-decoration-color:transparent;text-underline-offset:.3em;transition:text-decoration-color 180ms ease}
.index-heading button:hover,.corner-actions button:hover{text-decoration-color:currentColor}
.index-list{overflow:auto;overscroll-behavior:contain;display:grid;grid-template-columns:1fr 1fr;gap:8px;padding-right:8px;scrollbar-width:thin;scrollbar-color:var(--ink) transparent}
.index-button{min-height:68px;display:grid;grid-template-columns:52px 1fr auto;gap:12px;align-items:center;padding:8px;text-align:left;background:#dfe0da;cursor:pointer;transition:background-color 180ms ease,color 180ms ease}
.index-button img{width:52px;height:52px;object-fit:cover;object-position:top}
.index-button strong{font-size:15px;line-height:1.25}
.index-button span{font-size:13px;color:var(--muted);font-variant-numeric:tabular-nums}
.index-button.is-active{background:var(--acid);color:var(--ink)}
.index-button.is-active span{color:var(--ink)}
.archive-destinations{display:flex;gap:10px}
.archive-destinations a{flex:1;display:grid;place-items:center;min-height:48px;padding:10px 14px;text-decoration:none;background:var(--ink);color:#fff;font-size:15px;transition:background-color 180ms ease,transform 140ms var(--ease-out)}
.archive-destinations a:last-child{background:var(--red)}
.archive-destinations a:active{transform:scale(.98)}
.corner-actions{position:absolute;z-index:22;left:clamp(18px,3vw,46px);bottom:clamp(18px,3vw,40px);display:flex;gap:22px;font-size:14px}
.corner-actions button{min-height:44px}
.experience[data-state="workspace"] .corner-actions{opacity:0;pointer-events:none}
.year-span{position:absolute;z-index:2;right:clamp(18px,3vw,46px);bottom:clamp(22px,3vw,42px);display:flex;gap:52px;color:var(--muted);font-size:14px;font-variant-numeric:tabular-nums}
.year-span::before{content:"";position:absolute;left:38px;right:44px;top:50%;height:3px;background:var(--acid);transform:translateY(-50%);z-index:-1}
.experience[data-state="workspace"] .identity,.experience[data-state="workspace"] .status,.experience[data-state="workspace"] .year-span{opacity:0;pointer-events:none;transition:opacity 250ms ease}
.card-viewer{width:100%;height:100%;max-width:none;max-height:none;margin:0;padding:0;border:0;background:rgba(18,18,15,.96);color:#fff;overflow:hidden}
.card-viewer::backdrop{background:rgba(18,18,15,.7)}
.card-viewer[open]{display:grid;grid-template-columns:110px 1fr 110px;place-items:center}
.card-viewer figure{height:92vh;max-width:calc(100vw - 240px);margin:0;display:grid;grid-template-rows:minmax(0,1fr) auto;gap:12px}
.card-viewer figure img{width:100%;height:100%;min-height:0;object-fit:contain}
.card-viewer figcaption{display:flex;justify-content:space-between;gap:20px;font-size:15px}
.card-viewer figcaption span{color:#c9c4b8;font-variant-numeric:tabular-nums}
.viewer-close{position:absolute;top:24px;right:28px;z-index:2;background:var(--acid);padding:12px 20px;cursor:pointer;font-weight:700}
.viewer-nav{width:100%;height:100%;background:transparent;color:#fff;cursor:pointer;font-size:15px;transition:background-color 180ms ease}
.viewer-nav:hover{background:rgba(255,255,255,.08)}
noscript{position:fixed;inset:auto 20px 20px;background:#fff;padding:16px;z-index:40}
@media(max-width:900px){
  .identity{max-width:70vw}.identity p{display:none}
  .folder-wrap{width:min(60vw,480px)}
  .archive-workspace{grid-template-columns:46% 54%;gap:18px;padding:100px 18px 24px}
  .specimen-image{height:min(61vh,650px)}
  .index-list{grid-template-columns:1fr}
  .index-button{min-height:62px}
}
@media(max-width:620px){
  .experience{min-height:560px}
  .identity h1{font-size:26px}.status{top:84px;left:18px;right:auto;text-align:left;max-width:70vw}
  .folder-wrap{width:min(84vw,430px)}
  .packet-card{width:64vw}
  .experience[data-state="opening"] .packet-card{transform:translate(calc((var(--i) - 7.5)*1.1vw),calc(-8vh - var(--i)*.3vh)) rotate(calc((var(--i) - 7.5)*.6deg)) scale(.74)}
  .archive-workspace{display:grid;grid-template-columns:1fr;grid-template-rows:minmax(0,56vh) minmax(0,1fr);gap:14px;padding:68px 14px 14px;align-items:stretch}
  .specimen{grid-template-rows:minmax(0,1fr) auto}
  .specimen-image{width:auto;height:100%;max-height:50vh}
  .specimen-copy{padding-top:9px}.specimen-copy h2{font-size:22px}.specimen-copy p{font-size:13px;gap:12px}
  .archive-index{height:100%;max-height:100%;min-height:0;grid-template-rows:auto minmax(0,1fr) auto;gap:9px;overflow:hidden}
  .index-heading strong{font-size:19px}.index-heading button{font-size:13px}
  .index-list{display:grid;grid-template-columns:1fr 1fr;overflow-x:hidden;overflow-y:auto;padding:0 3px 7px 0;gap:7px}
  .index-button{grid-template-columns:44px 1fr;grid-template-rows:1fr auto;min-height:62px;padding:7px}
  .index-button img{width:44px;height:48px;grid-row:1/3}.index-button span{grid-column:2}
  .archive-destinations a{min-height:44px;font-size:13px}
  .experience[data-state="workspace"] .folder-wrap{display:none}
  .card-viewer[open]{grid-template-columns:58px 1fr 58px}
  .card-viewer figure{height:88vh;max-width:calc(100vw - 116px)}
  .card-viewer figcaption{display:block;text-align:center;line-height:1.5}
  .card-viewer figcaption span{display:block}
  .viewer-close{top:12px;right:12px;padding:10px 14px}
}
@media(prefers-reduced-motion:no-preference){
  .identity h1{animation:arrival 720ms var(--ease-out) both}
  .identity p{animation:arrival 720ms 80ms var(--ease-out) both}
  .status{animation:arrival 720ms 150ms var(--ease-out) both}
  .folder-wrap{animation:folder-arrival 980ms 120ms var(--ease-out)}
  #turn-folder{animation:arrival 620ms 310ms var(--ease-out) both}
  #reset-view{animation:arrival 620ms 380ms var(--ease-out) both}
  .year-span span:first-child{animation:arrival 620ms 430ms var(--ease-out) both}
  .year-span span:last-child{animation:arrival 620ms 500ms var(--ease-out) both}
  @keyframes arrival{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
  @keyframes folder-arrival{from{opacity:0;transform:translateY(28px) scale(.965)}to{opacity:1;transform:none}}
}
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}
}
/* Actual Three.js object replaces the former flat image flip. */
.object-stage{display:block;perspective:none}
#archive-canvas{display:block;width:100%;height:100%;touch-action:none;cursor:grab}
#archive-canvas:active{cursor:grabbing}
#seal-button{position:absolute;z-index:9;width:44px;height:44px;padding:0;transform:translate(-50%,-50%);border:1px solid #f0df00;border-radius:50%;background:transparent;cursor:pointer;box-shadow:0 0 0 5px #f0df0022}
#seal-button[hidden]{display:none}
#seal-button span{position:absolute;top:48px;left:50%;transform:translateX(-50%);white-space:nowrap;padding:7px 10px;background:#181812;color:#fff;font-size:12px;pointer-events:none}
.experience[data-state=workspace] .object-stage{opacity:0;pointer-events:none}
.identity{pointer-events:none}
.status,.identity h1,.identity p,.year-span span{animation-fill-mode:backwards}
.specimen-image{background:transparent;max-width:100%;overflow:visible}
.specimen-image img{object-fit:contain;transform:none;filter:drop-shadow(0 12px 12px #33231025)}
.specimen-image span{display:none}
.index-button img{object-fit:contain}
.specimen-copy{flex-wrap:wrap;gap:8px}
.archive-workspace{padding-top:54px}
@media(max-width:620px){.archive-workspace{padding-top:24px;grid-template-rows:minmax(0,54vh) minmax(0,1fr)}.specimen-image{max-width:90vw}.experience{min-height:0}}
/* Intrinsic row sizing: dates never compete with Chinese titles for width. */
.archive-index{container-type:inline-size;min-height:0;height:100%;max-height:100%}
.index-list{grid-auto-rows:max-content;align-content:start;min-width:0;min-height:0}
.index-button{grid-template-columns:52px minmax(0,1fr);grid-template-rows:auto auto;min-height:88px;height:auto;gap:5px 12px;align-content:center;overflow:hidden}
.index-button img{grid-column:1;grid-row:1/3;width:52px;height:64px;align-self:center;object-fit:contain}
.index-button strong{grid-column:2;grid-row:1;min-width:0;line-height:1.5;font-size:15px;overflow-wrap:anywhere}
.index-button span{grid-column:2;grid-row:2;white-space:normal;line-height:1.4;font-size:12px}
@container(max-width:480px){.index-list{grid-template-columns:1fr}}
.specimen{min-height:0;overflow:hidden}
.specimen-image{height:100%;width:100%;min-height:0;max-height:100%;aspect-ratio:auto;overflow:hidden}
.specimen-copy{min-width:0;padding:12px 0 0;align-items:center}
.specimen-copy h2{font-size:clamp(20px,2vw,32px);line-height:1.35;overflow-wrap:anywhere}
.specimen-copy p{flex-wrap:wrap;white-space:normal;gap:8px 20px}
.archive-workspace{grid-template-columns:minmax(0,1fr) minmax(0,1fr);align-items:stretch;overflow:hidden}
@media(max-width:900px){.archive-workspace{grid-template-columns:minmax(0,46fr) minmax(0,54fr)}}
@media(max-width:620px){.archive-workspace{grid-template-columns:minmax(0,1fr);grid-template-rows:minmax(0,51fr) minmax(0,49fr)}.index-list{grid-template-columns:1fr}.index-button{min-height:80px}.specimen-copy h2{font-size:20px}.specimen-image{max-width:100%}.archive-index{gap:8px}.index-heading{flex-wrap:wrap;gap:8px}}
@media(max-height:650px) and (min-width:621px){.archive-workspace{padding:22px}.archive-index{gap:10px}.index-heading strong{font-size:22px}}
.experience[data-state=opening] .identity{opacity:0;transition:opacity 300ms}
/* Quiet cover: one title and the retained date mark. */
.identity{display:block;left:clamp(24px,4vw,64px);top:clamp(26px,4vw,58px);max-width:calc(100% - 48px)}
.identity h1{font-size:clamp(23px,2.7vw,40px);font-weight:500;line-height:1.5;letter-spacing:.12em;margin:0;text-wrap:balance}
.status,.corner-actions,#seal-button span{display:none!important}
@media(max-width:620px){.identity h1{font-size:23px;letter-spacing:.08em}}
.cover-stickers{position:absolute;inset:0;z-index:3;pointer-events:none;transition:opacity .4s ease}
.art-sticker{position:absolute;display:block;width:clamp(105px,13vw,190px);height:auto;filter:drop-shadow(2px 5px 3px #342b2526)}
.sticker-bauhaus{left:5%;top:25%;transform:rotate(-12deg)}
.sticker-dada{right:4.5%;top:17%;width:clamp(120px,16vw,220px);transform:rotate(9deg)}
.sticker-memphis{left:9%;bottom:9%;transform:rotate(10deg)}
.sticker-pop{right:6%;bottom:15%;width:clamp(125px,17vw,235px);transform:rotate(-8deg)}
.experience[data-state=opening] .cover-stickers,.experience[data-state=workspace] .cover-stickers{opacity:0;visibility:hidden}
@media(max-width:900px){.art-sticker{width:100px}.sticker-bauhaus{left:3%;top:20%}.sticker-dada{right:3%;top:19%;width:120px}.sticker-memphis{left:4%;bottom:9%}.sticker-pop{right:3%;bottom:10%;width:125px}}
@media(max-width:620px){.art-sticker{width:67px}.sticker-bauhaus{left:5%;top:17%;transform:rotate(-12deg)}.sticker-dada{width:89px;right:5%;top:17%}.sticker-memphis{left:6%;bottom:12%}.sticker-pop{width:90px;right:5%;bottom:12%}}
@media(max-height:600px) and (min-width:621px){.art-sticker{width:85px}.sticker-bauhaus{top:28%}.sticker-dada{top:20%}.sticker-pop{width:110px}}
.archive-index{grid-template-rows:auto minmax(0,1fr)}.specimen-image{cursor:pointer}
/* Paper labels lift without changing the layout or intercepting model controls. */
.index-list{padding:10px 9px 12px 5px;gap:12px}
.index-button{position:relative;transform:translateY(0);transition:transform 260ms cubic-bezier(.2,.8,.2,1),box-shadow 260ms ease,background-color 200ms ease;will-change:transform}
.index-button img{transition:transform 350ms cubic-bezier(.2,.8,.2,1),filter 350ms ease;transform-origin:50% 85%}
@media(hover:hover) and (pointer:fine){.index-button:hover{transform:translateY(-4px);box-shadow:0 9px 16px #30291520;z-index:2}.index-button:hover img{transform:translateY(-3px) rotate(-3deg) scale(1.08);filter:drop-shadow(1px 4px 2px #33231035)}.specimen-image:hover img{transform:translateY(-5px) scale(1.015)}}
.index-button:focus-visible{transform:translateY(-4px);box-shadow:0 9px 16px #30291520}
.index-button:active{transform:translateY(-1px) scale(.985)}
@media(prefers-reduced-motion:reduce){.index-button,.index-button img,.specimen-image img{transform:none!important;transition:none!important}}