/* Mobile baseline */
html{-webkit-tap-highlight-color:transparent;-webkit-text-size-adjust:100%;scrollbar-gutter:stable}
input,textarea,select{font-size:16px}button,a,[role=button]{touch-action:manipulation}.btn,.card{user-select:none;-webkit-user-select:none}
:root{
 --paper:#FFFFFF;--white:#FFFFFF;--ink:#0B0B0B;--ink-2:#3A3835;--muted:#716B67;--line:#E6E4DF;
 --orange:#FF4B1F;--orange-ink:#C3300C;--yellow:#FFD23F;--blue:#1558FF;--blue-ink:#1020A0;--lime:#C8FF00;--grey:#B9B7B2;--pink:#F4D6D7;
 --font-latin:"Inter Variable",Inter,system-ui,sans-serif;--font-zh:"Noto Sans SC Variable","Noto Sans SC","PingFang SC","Source Han Sans SC","Microsoft YaHei",sans-serif;--font:"Inter Variable",Inter,var(--font-zh);
 --fs-display:clamp(2.5rem,5.5vw,5rem);--fs-h2:clamp(1.75rem,3vw,2.5rem);--fs-h3:1.375rem;--fs-body:1.0625rem;--fs-small:.875rem;--fs-eyebrow:.75rem;
 --container:1280px;--gutter:clamp(20px,4vw,48px);--section-y:clamp(64px,10vw,140px);--r-lg:20px;--r-md:16px;--r-sm:12px;--r-xs:8px;--radius:var(--r-lg);--radius-poster:var(--r-md);--card-paper:#FAFAF8;
 --shadow-card:0 1px 2px rgba(0,0,0,.05),0 12px 32px -12px rgba(0,0,0,.18);--shadow-poster:0 1px 2px rgba(0,0,0,.06),0 24px 48px -16px rgba(0,0,0,.28);
 --ease-out:cubic-bezier(.23,1,.32,1);--ease-in-out:cubic-bezier(.77,0,.175,1);--t-press:140ms;--t-hover:200ms;--t-reveal:500ms;--t-page:260ms;
}
*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--font);font-variant-numeric:tabular-nums}
.cover::before{content:"";position:fixed;inset:0;pointer-events:none;z-index:5;opacity:.04;mix-blend-mode:multiply;background:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='180' height='180'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Cpath fill='%23000' filter='url(%23n)' d='M0 0h180v180H0z'/%3E%3C/svg%3E")}
button,a{color:inherit}button{font:inherit;cursor:pointer;border:0}a{text-decoration:none}img{max-width:100%}figure,h1,h2,h3,p{margin:0}h1,h2,h3{letter-spacing:0;text-wrap:balance}h1.display{font:700 var(--fs-display)/1.1 var(--font);max-width:20ch}h2{font:700 var(--fs-h2)/1.2 var(--font)}h3{font:600 var(--fs-h3)/1.3 var(--font)}p{font:400 var(--fs-body)/1.8 var(--font);color:var(--ink-2);max-width:34em}p+p{margin-top:1.5em}.latin{letter-spacing:-.02em;line-height:.95}.nowrap{white-space:nowrap}.accent{color:var(--orange-ink)}.container{width:min(var(--container),calc(100% - var(--gutter)*2));margin-inline:auto}.section{padding-block:var(--section-y)}
.eyebrow{font:600 var(--fs-eyebrow)/1.5 var(--font);text-transform:uppercase;letter-spacing:.12em;color:var(--ink-2)}.eyebrow [lang=zh]{text-transform:none;letter-spacing:0}.eyebrow+h1,.eyebrow+h2{margin-top:24px}.section-head{display:flex;justify-content:space-between;align-items:end;gap:24px;margin-bottom:40px}.section-head .eyebrow{display:block;margin-bottom:16px}.actions{display:flex;gap:12px;flex-wrap:wrap;margin-top:28px}.btn{min-height:44px;padding:10px 20px;border-radius:999px;font:500 15px/1.5 var(--font);display:inline-flex;align-items:center;justify-content:center;gap:10px;transition:transform var(--t-press) var(--ease-out);white-space:nowrap}.btn-primary{background:var(--orange);color:var(--ink)}.btn-secondary{background:transparent;border:1px solid var(--ink)}.btn:active{transform:scale(.97)}:focus-visible{outline:3px solid var(--blue-ink);outline-offset:4px}.poster{display:block;border:1px solid var(--line);background:var(--card-paper);padding:8px;border-radius:var(--radius-poster);box-shadow:var(--shadow-poster)}.poster img{display:block;width:100%;height:auto;border-radius:var(--r-xs)}.card{display:block;background:var(--card-paper);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow-card)}.card[href]{transition:transform var(--t-hover) var(--ease-out)}.card[href]:active{transform:scale(.985)}
site-header{display:block;height:64px;position:relative;z-index:30}.site-header{position:fixed;inset:0 0 auto;height:64px;background:var(--paper);border-bottom:1px solid transparent}.site-header.is-scrolled{background:color-mix(in srgb,var(--paper) 90%,transparent);backdrop-filter:blur(12px);border-color:var(--line)}.header-inner{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}.brand{display:flex;align-items:center;min-height:44px;font:600 13px/1.4 var(--font);white-space:nowrap}.brand [lang=zh]{font-weight:500}.desktop-nav{display:flex;gap:28px}.desktop-nav a{display:flex;align-items:center;min-height:44px;font-size:var(--fs-small);position:relative}.desktop-nav [aria-current=page]::after{content:"";position:absolute;bottom:2px;inset-inline:0;height:2px;background:var(--orange)}.status{border:1px solid var(--line);border-radius:999px;padding:8px 12px;white-space:nowrap}.status::before{content:"●";color:var(--orange-ink);margin-right:8px}.menu-toggle{display:none;background:none;width:44px;height:44px;font-size:24px}.menu-overlay{position:fixed;inset:0;height:100dvh;background:var(--paper);padding:90px var(--gutter) max(30px,env(safe-area-inset-bottom));z-index:40;display:flex;flex-direction:column;gap:30px;overflow:auto}.menu-overlay[hidden]{display:none}.menu-overlay nav{display:grid;gap:12px}.menu-overlay nav a{display:block;font-size:var(--fs-h2);line-height:1.4;min-height:56px}.menu-close{position:absolute;right:var(--gutter);top:10px;width:44px;height:44px;font-size:28px;background:none}.menu-email{margin-top:auto;min-height:44px;display:flex;align-items:center}.skip-link{position:fixed;top:8px;left:12px;z-index:100;background:var(--paper);padding:12px;transform:translateY(-150%)}.skip-link:focus{transform:none}
site-footer{display:block}.footer-inner{display:flex;justify-content:space-between;align-items:center;gap:24px;flex-wrap:wrap;border-top:1px solid var(--line);padding-block:30px}.footer-inner a{display:inline-flex;min-height:44px;align-items:center;font-size:var(--fs-small)}.page-tab{display:flex;align-items:center;gap:20px;padding-block:24px;width:fit-content;margin-left:max(var(--gutter),calc((100% - var(--container))/2))}.page-tab .poster{width:56px;padding:4px;flex-shrink:0}.page-tab img{aspect-ratio:4/5;object-fit:cover;object-position:top}.page-tab>span:last-child{display:grid;gap:4px;font-size:var(--fs-small)}
.toast{width:max-content;position:fixed;bottom:max(24px,env(safe-area-inset-bottom));left:50%;translate:-50% 0;max-width:calc(100% - 32px);z-index:60;background:var(--white);border:1px solid var(--line);border-radius:999px;box-shadow:var(--shadow-card);padding:14px 22px;font-size:var(--fs-small);opacity:1;transform:translateY(0);transition:opacity 400ms ease,transform 400ms ease}.toast.is-leaving{opacity:0;transform:translateY(100%)}@starting-style{.toast{opacity:0;transform:translateY(100%)}}
@view-transition{navigation:auto}::view-transition-old(root){animation:vt-out var(--t-page) var(--ease-out) both}::view-transition-new(root){animation:vt-in var(--t-page) var(--ease-out) both}::view-transition-group(*){animation-duration:420ms;animation-timing-function:var(--ease-out)}@keyframes vt-out{to{opacity:0}}@keyframes vt-in{from{opacity:0;transform:translateY(8px)}}.page-enter{animation:vt-in var(--t-page) var(--ease-out)}
@media(hover:hover) and (pointer:fine){.btn:hover{box-shadow:inset 0 0 0 100px rgba(0,0,0,.04)}.card[href]:hover{transform:translateY(-4px);box-shadow:var(--shadow-poster)}.desktop-nav a:hover{color:var(--orange-ink)}}
@media(max-width:900px){.desktop-nav,.status{display:none}.menu-toggle{display:block}}
@media(max-width:600px){.section-head{align-items:start;gap:16px}.section-head>span{font-size:10px}.footer-inner{flex-direction:column;align-items:start;gap:8px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}::view-transition-group(*),::view-transition-old(root),::view-transition-new(root){animation-duration:1ms!important}.page-enter{animation:none}.btn:active,.card[href]:active{transform:none}.toast{transform:none;transition:opacity 200ms ease!important}.toast.is-leaving{transform:none}@starting-style{.toast{transform:none}}}
@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:reduce){.card[href]:hover{transform:none}}
/* Capability heading, detail and navigation. */
.arc-heading{display:flex;justify-content:space-between;gap:24px;align-items:center;margin-top:12px}.arc-heading h1{font:600 var(--fs-small)/1.4 var(--font)}.stage-controls{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:50px}.stage-controls>div{display:flex;gap:10px}.cap-summary{font-weight:500}.cap-detail-foot{margin-top:32px;display:flex;justify-content:space-between;gap:24px}.cap-position{white-space:nowrap}.arc-outro{max-width:920px;padding-block:48px 96px}
@media(max-width:1024px){.arc-heading{align-items:start}.arc-heading p{max-width:20em}}
@media(max-width:900px){.arc-heading{display:block}.arc-heading p{margin-top:12px;max-width:none}.stage-controls{margin-top:20px;margin-bottom:40px}.cap-detail-foot{flex-wrap:wrap}}
/* Projects: readable static cases plus a desktop-only circular gallery. */
.cover{position:relative;isolation:isolate;aspect-ratio:16/10;padding:24px;display:flex;flex-direction:column;justify-content:space-between;overflow:hidden;background:var(--orange);color:var(--ink)}.cover::before{position:absolute;opacity:.06;z-index:-1}.cover .eyebrow{color:inherit;letter-spacing:0}.cover-number{font:600 clamp(64px,10vw,120px)/1 var(--font-latin);align-self:center}.cover-pending{font:500 10px/1.5 var(--font-latin);letter-spacing:.1em;align-self:flex-end}.cover-01{background:var(--orange);color:var(--ink)}.cover-02{background:var(--blue);color:var(--paper)}.cover-03{background:var(--yellow);color:var(--ink)}.cover-04{background:var(--blue-ink);color:var(--paper)}.cover-05{background:var(--grey);color:var(--ink)}
.project-list{display:grid;gap:32px}.project-row{display:grid;grid-template-columns:5fr 7fr;overflow:hidden}.project-row>.cover{height:100%;min-height:340px;aspect-ratio:auto}.project-row-copy{padding:clamp(24px,3vw,44px)}.project-row-copy h3{margin:20px 0}.project-row-copy p{font-size:16px}.ability{color:var(--orange-ink);font-size:var(--fs-small);margin-top:24px}.ability>span{color:var(--ink);font-weight:600;margin-right:10px}.tags{display:flex;gap:8px;flex-wrap:wrap;margin-top:20px}.tags>span{display:inline-flex;align-items:center;font:500 10px/1.5 var(--font);letter-spacing:.04em;padding:6px 10px;border:1px solid var(--line);border-radius:999px;color:var(--ink-2)}#all-projects{scroll-margin-top:64px}#all-projects h1.display{font-size:var(--fs-h2)}
.case-page{padding-block:20px 96px}.stats{display:flex;gap:24px;margin-top:32px;flex-wrap:wrap}.stat{padding:32px;flex:1;min-width:200px}.stat strong{display:block;font:600 clamp(28px,3vw,40px)/1.2 var(--font);margin-bottom:16px}.case-content{padding-block:48px}.case-section{display:grid;grid-template-columns:3fr 9fr;gap:48px;border-top:1px solid var(--line);padding-block:56px}.case-section h2{display:flex;align-items:start;gap:18px;font-size:var(--fs-h3)}.case-section h2 .eyebrow{line-height:1.8;margin-top:4px}.placeholder{border:1px dashed var(--line);background:var(--paper);padding:28px;border-radius:var(--radius);color:var(--ink-2);font-size:var(--fs-small)}.deliverable-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-top:32px}.deliverable{aspect-ratio:16/10;display:flex;align-items:center;justify-content:center;text-align:center;line-height:1.8}.project-pagination{display:grid;grid-template-columns:1fr 1fr;gap:24px;margin-block:56px 32px}.project-pagination>a{padding:28px}.project-pagination h3{margin-top:16px}.spec-title{font-weight:600;font-size:8px;grid-column:1/-1;align-self:end}.spec-tags{grid-column:1/-1;font-size:5px}
@media(max-width:1024px){.project-row-copy{padding:28px}.case-section{gap:32px;grid-template-columns:1fr 3fr}}
@media(max-width:900px){.project-row{grid-template-columns:1fr}.project-row>.cover{height:auto;min-height:0;aspect-ratio:16/10}.case-section{grid-template-columns:1fr;gap:24px}}
@media(max-width:600px){.project-row-copy{padding:24px}.stats{gap:16px}.stat{min-width:100%;padding:24px}.deliverable-grid,.project-pagination{grid-template-columns:1fr}.case-section{padding-block:40px}.case-page{padding-bottom:64px}}
/* Original about copy and the relocated scratch-to-reveal stage. */
.about-intro{padding-top:48px;max-width:1120px}.about-intro>p{margin-block:28px}.about-marquee{overflow:hidden;background:var(--ink);color:var(--orange);padding-block:20px}.about-marquee-track{display:flex;width:max-content;animation:marquee 26s linear infinite}.about-marquee-track>div{display:flex;align-items:center;gap:32px;padding-right:32px;white-space:nowrap;font-size:20px;font-weight:600}.about-marquee b{font-weight:400}@keyframes marquee{to{transform:translateX(-50%)}}.about-experience{display:grid;grid-template-columns:7fr 5fr;align-items:center;gap:100px}.experience-copy{font-size:var(--fs-h3);line-height:1.6;margin-block:28px}.about-experience figure{width:85%;justify-self:center}.about-experience .poster{transform:rotate(-2deg)}.about-experience figcaption{font-size:var(--fs-small);color:var(--ink-2);margin-top:28px;text-align:center}.about-ai{padding-top:0}.about-ai h2{max-width:32em;margin-bottom:28px}.about-method{padding-top:0}.about-method-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}.about-method-grid>article{padding:40px}.about-method-grid>article:first-child{border-color:var(--orange)}.about-method-grid h3{margin:28px 0 36px;line-height:1.5;max-width:20em}.beneath{padding-top:0;display:grid;grid-template-columns:5fr 7fr;gap:64px;align-items:center}.beneath h2{margin:24px 0;font-size:var(--fs-display);line-height:1.1}.beneath .btn{margin-top:28px}.fluid-stage{aspect-ratio:4/3;min-height:420px;border-radius:var(--r-md);overflow:hidden;background:var(--white);border:1px solid var(--line);position:relative;contain:layout paint}.FluidPhotoRevealSection{position:absolute;inset:0;--fluid-mask-rgb:255,255,255;touch-action:none}.CollisionPhotoLayer{position:absolute;inset:42px 8px 8px;overflow:hidden}.collision-photo{position:absolute;left:0;top:0;width:29%;aspect-ratio:1;pointer-events:none;padding:5px;transform-origin:center}.collision-photo img{height:100%;object-fit:contain}.FluidMaskCanvas{position:absolute;inset:0;width:100%;height:100%;pointer-events:none;display:none}.fluid-enabled .FluidMaskCanvas{display:block}.fluid-photo-ui-top{position:absolute;top:18px;right:18px;left:18px;display:flex;flex-direction:column;align-items:end;gap:5px;pointer-events:none}.fluid-photo-ui-top .eyebrow{font-size:9px;letter-spacing:.04em}.touch-copy{display:none}
@media(hover:none){.pointer-copy{display:none}.touch-copy{display:inline}}
@media(max-width:1024px){.about-experience{gap:40px}.beneath{gap:32px}}
@media(max-width:900px){.beneath{grid-template-columns:1fr}.fluid-stage{min-height:0;height:min(70vw,420px);aspect-ratio:auto}.about-method-grid>article{padding:28px}}
@media(max-width:600px){.about-experience,.about-method-grid{grid-template-columns:1fr}.about-experience figure{width:75%;margin-top:16px}.about-ai h2{font-size:26px}}
@media(prefers-reduced-motion:reduce){.about-marquee{overflow-x:auto}.about-marquee-track{animation:none}.about-marquee-track>[aria-hidden=true]{display:none}.about-experience .poster{transform:none}.FluidMaskCanvas{display:none!important}}

/* Project evidence: keep screenshots readable inside the existing case rhythm. */
.cover-media{padding:0;background:var(--white)}.cover-media::before{display:none}.cover-media>img{display:block;width:100%;height:100%;object-fit:cover}.cover-media.cover-contain>img{object-fit:contain;padding:clamp(12px,2vw,28px);background:var(--white)}.cover-chip{position:absolute;left:16px;bottom:16px;padding:8px 12px;border-radius:999px;background:rgba(255,255,255,.94);color:var(--ink);font:600 10px/1 var(--font);letter-spacing:.04em;box-shadow:var(--shadow-card)}.case-section>div>p+ul,.case-section>div>p+ol{margin-top:24px}.feature-list{display:grid;margin:0;padding:0;border-top:1px solid var(--line)}.feature-list>div{display:grid;grid-template-columns:minmax(140px,2fr) 7fr;gap:24px;padding:22px 0;border-bottom:1px solid var(--line)}.feature-list dt{font-weight:600}.feature-list dd{margin:0;color:var(--ink-2);line-height:1.8}.process-flow{list-style:none;display:grid;grid-template-columns:repeat(4,1fr);margin:28px 0 0;padding:0;border-block:1px solid var(--line)}.process-flow li{position:relative;padding:24px 26px 24px 0;font-size:var(--fs-small);line-height:1.6}.process-flow li+li{padding-left:26px;border-left:1px solid var(--line)}.process-flow li+li::before{content:'→';position:absolute;left:-9px;top:25px;background:var(--paper);color:var(--orange-ink);padding:0 2px}.process-flow strong{display:block;margin-bottom:6px;color:var(--ink)}.decision-list{margin:0;padding-left:1.3em;color:var(--ink-2)}.decision-list li{padding:0 0 20px 8px;line-height:1.8}.decision-list li+li{padding-top:20px;border-top:1px solid var(--line)}.decision-list strong{color:var(--ink)}.media-grid{display:grid;grid-template-columns:1fr 1fr;gap:32px;margin-top:34px}.media-grid.media-grid-three{grid-template-columns:repeat(3,1fr)}.media-figure{margin-top:34px}.media-grid .media-figure{margin-top:0}.media-zoom{display:block;width:100%;padding:0;background:var(--white);border:1px solid var(--line);border-radius:var(--radius-poster);overflow:hidden;box-shadow:var(--shadow-card);text-align:left;transition:transform var(--t-hover) var(--ease-out),box-shadow var(--t-hover) ease}.media-zoom img{display:block;width:100%;height:auto}.media-figure figcaption{display:grid;gap:7px;margin-top:14px;color:var(--ink-2);font-size:var(--fs-small);line-height:1.7}.media-figure figcaption strong{color:var(--ink);font-size:15px}.privacy-note,.version-note{margin-top:20px;padding-top:18px;border-top:1px solid var(--line);font-size:var(--fs-small)}.prototype-shell{position:relative;aspect-ratio:16/9;margin-top:32px;border:1px solid var(--line);border-radius:var(--radius);overflow:hidden;background:var(--white);box-shadow:var(--shadow-card)}.prototype-shell iframe{display:block;width:100%;height:100%;border:0}.prototype-mobile-note{display:none;margin-top:24px}.action-row{display:flex;gap:12px;flex-wrap:wrap;margin-top:24px}.document-row{display:grid;grid-template-columns:auto 1fr auto;align-items:center;gap:20px;margin-top:26px;padding:24px 0;border-block:1px solid var(--line)}.document-row>span:first-child{font:600 12px/1 var(--font-latin);color:var(--orange-ink)}.document-row strong{display:block;margin-bottom:7px}.document-row small{color:var(--ink-2);line-height:1.6}.document-row .btn{white-space:nowrap}.boundary-list{display:grid;grid-template-columns:1fr 1fr;gap:36px;margin-top:26px}.boundary-list h3{margin-bottom:14px}.boundary-list p{font-size:var(--fs-small)}.experiment-group{padding-top:36px}.experiment-group+.experiment-group{margin-top:48px;border-top:1px solid var(--line)}.experiment-group>h3{margin-bottom:12px}.experiment-group>p{font-size:var(--fs-small)}.experiment-more{margin-top:30px;border-block:1px solid var(--line)}.experiment-more summary{cursor:pointer;min-height:56px;display:flex;align-items:center;font-weight:600}.experiment-more p{padding-bottom:24px;font-size:var(--fs-small)}.factor-readout{display:grid;grid-template-columns:auto 1fr;gap:12px 24px;margin-top:24px}.factor-readout dt{font-weight:600}.factor-readout dd{margin:0;color:var(--ink-2);line-height:1.8}.media-lightbox{width:min(94vw,1400px);max-height:92dvh;padding:56px 24px 24px;border:1px solid var(--line);border-radius:var(--radius);background:var(--paper);color:var(--ink);box-shadow:0 30px 100px rgba(0,0,0,.35)}.media-lightbox::backdrop{background:rgba(11,11,11,.72)}.media-lightbox figure{display:grid;justify-items:center;gap:14px}.media-lightbox img{display:block;max-width:100%;max-height:calc(92dvh - 110px);object-fit:contain}.media-lightbox figcaption{font-size:var(--fs-small);color:var(--ink-2);text-align:center}.media-lightbox-close{position:absolute;right:14px;top:12px;width:44px;height:44px;border:1px solid var(--line);border-radius:50%;background:var(--white);font-size:24px}.media-lightbox[open]{animation:page-in 220ms var(--ease-out)}
@media(hover:hover) and (pointer:fine){.media-zoom:hover{transform:translateY(-3px);box-shadow:var(--shadow-poster)}}
@media(max-width:900px){.prototype-shell{display:none}.prototype-mobile-note{display:block}.media-grid.media-grid-three{grid-template-columns:1fr}.process-flow{grid-template-columns:1fr 1fr}.process-flow li:nth-child(3){border-left:0}.process-flow li:nth-child(n+3){border-top:1px solid var(--line)}.process-flow li:nth-child(3)::before{display:none}}
@media(max-width:600px){.media-grid,.boundary-list{grid-template-columns:1fr}.feature-list>div{grid-template-columns:1fr;gap:6px}.process-flow{grid-template-columns:1fr}.process-flow li+li{padding-left:0;border-left:0;border-top:1px solid var(--line)}.process-flow li+li::before{display:none}.document-row{grid-template-columns:1fr;gap:12px}.document-row .btn{width:fit-content}.media-lightbox{padding:52px 12px 14px}.cover-chip{left:10px;bottom:10px}}
@media(prefers-reduced-motion:reduce){.media-lightbox[open]{animation:none}.media-zoom:active{transform:none}}
@media(hover:hover) and (pointer:fine) and (prefers-reduced-motion:reduce){.media-zoom:hover{transform:none}}