:root {
  --paper: #fafaf8;
  --ink: #161616;
  --mute: #74736f;
  --rule: #e2e1dc;
  --ph-text: rgba(0,0,0,.42);
  --well: #f0efeb;
  --page: #f7f5f0;
  --ui: "Archivo", "Helvetica Neue", Arial, "PingFang SC", "Microsoft YaHei", sans-serif;
  --serif: "Source Serif 4", Georgia, "Songti SC", "SimSun", serif;
  --s-xs: 12px; --s-sm: 14px; --s-md: 17px; --s-lg: 24px; --s-xl: 32px;
  color-scheme: light;
}
* { box-sizing: border-box; }
body { background: var(--paper); color: var(--ink); font-family: var(--ui); font-size: var(--s-sm); line-height: 1.5; -webkit-font-smoothing: antialiased; }
.wrap { max-width: 1320px; margin: 0 auto; padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
@media (min-width: 760px) { .wrap { padding-left: max(40px, env(safe-area-inset-left, 0px)); padding-right: max(40px, env(safe-area-inset-right, 0px)); } }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, .ph:focus-visible { outline: 1.5px solid var(--ink); outline-offset: 3px; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

/* header */
header.site { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; padding-block: 30px 0; }
.brand { font-size: var(--s-lg); font-weight: 600; letter-spacing: -0.015em; line-height: 1; }
.brand small { display: block; font-size: var(--s-xs); font-weight: 400; letter-spacing: .02em; color: var(--mute); margin-top: 7px; }
nav.main { display: flex; gap: 28px; }
nav.main a { color: var(--mute); padding-bottom: 2px; border-bottom: 1px solid transparent; transition: color .2s; }
nav.main a:hover { color: var(--ink); }
nav.main a.on { color: var(--ink); border-bottom-color: var(--ink); }
#menuBtn { display: none; font-size: var(--s-sm); color: var(--mute); }
@media (max-width: 700px) {
  #menuBtn { display: block; }
  nav.main { display: none; position: absolute; left: 0; right: 0; top: 78px; z-index: 5; flex-direction: column; gap: 0; background: var(--paper); border-bottom: 1px solid var(--rule); padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); padding-block: 4px 12px; }
  nav.main.open { display: flex; }
  nav.main a { padding-block: 10px; font-size: var(--s-md); border: 0; }
  header.site { position: relative; }
}

main { padding-block: 56px 96px; min-height: 60vh; }
footer.site { border-top: 1px solid var(--rule); padding-block: 22px 34px; color: var(--mute); font-size: var(--s-xs); display: flex; justify-content: space-between; gap: 16px; flex-wrap: wrap; }

/* placeholder image */
.ph { position: relative; background: var(--tone, #d6d4ce); display: block; width: 100%; max-width: 100%; overflow: hidden; cursor: zoom-in; }
.ph::after { content: ""; position: absolute; inset: 0; background: linear-gradient(160deg, rgba(255,255,255,.10), rgba(0,0,0,.06)); pointer-events: none; }
.ph .lbl { position: absolute; left: 12px; bottom: 10px; font-size: 11px; letter-spacing: .06em; text-transform: uppercase; color: var(--phc, var(--ph-text)); font-variant-numeric: tabular-nums; }
.ph.dark { --phc: rgba(255,255,255,.55); }
.ph.static { cursor: default; }

/* home */
.hero { display: grid; gap: 14px; width: min(100%, calc(76vh * 1.5)); margin: 0 auto; }
.slides { position: relative; width: 100%; aspect-ratio: 3 / 2; }
.slide { position: absolute; inset: 0; display: grid; place-items: center; opacity: 0; transition: opacity 1.2s ease; pointer-events: none; }
.slide.on { opacity: 1; pointer-events: auto; }
.slide .ph { height: 100%; width: auto; max-width: 100%; }
.slide.link { cursor: pointer; }
.pan { position: relative; height: 2px; background: var(--rule); margin-top: -6px; }
.pan span { position: absolute; top: 0; height: 2px; background: var(--ink); transition: left .05s linear; }
@media (max-width: 700px) {
  .hero { width: 100%; }
  .slides { aspect-ratio: 1 / 1; }
  .slide { display: block; overflow-x: auto; overflow-y: hidden; scrollbar-width: none; overscroll-behavior-x: contain; }
  .slide::-webkit-scrollbar { display: none; }
  .slide .ph { height: 100%; width: auto; max-width: none; margin-inline: auto; }
}
.hero-cap { display: flex; justify-content: space-between; align-items: baseline; gap: 16px; flex-wrap: wrap; color: var(--mute); font-size: var(--s-xs); }
.hero-cap a { color: var(--ink); }
.hero-cap a:hover { text-decoration: underline; text-underline-offset: 3px; }
.hero-cap .free { color: var(--ink); }
.hero-nav { display: flex; gap: 18px; }
.hero-nav button { color: var(--mute); }
.hero-nav button:hover { color: var(--ink); }
.count { font-variant-numeric: tabular-nums; }

/* projects index */
.page-h { font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--mute); font-weight: 500; margin: 0 0 28px; }
.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 48px 32px; }
@media (max-width: 960px) { .grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 560px) { .grid { grid-template-columns: 1fr; gap: 36px; } }
.card { display: grid; gap: 12px; }
.card .ph { aspect-ratio: 4 / 3; cursor: pointer; transition: opacity .25s; }
.card:hover .ph { opacity: .88; }
.card h3 { margin: 0; font-size: var(--s-sm); font-weight: 500; }
.card p { margin: 2px 0 0; color: var(--mute); font-size: var(--s-xs); }
.filter { display: flex; gap: 20px; margin: -8px 0 32px; flex-wrap: wrap; }
@media (max-width: 560px) { .filter { flex-wrap: nowrap; overflow-x: auto; gap: 18px; scrollbar-width: none; margin-inline: calc(-1 * max(16px, env(safe-area-inset-left, 0px))); padding-inline: max(16px, env(safe-area-inset-left, 0px)); } .filter::-webkit-scrollbar { display: none; } .filter button { flex: none; } }
.filter button { color: var(--mute); font-size: var(--s-sm); padding-bottom: 2px; border-bottom: 1px solid transparent; }
.filter button.on { color: var(--ink); border-bottom-color: var(--ink); }

/* project page */
.p-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 32px 64px; margin-bottom: 64px; }
@media (max-width: 860px) { .p-head { grid-template-columns: 1fr; margin-bottom: 44px; } }
.p-head h1 { font-size: var(--s-xl); font-weight: 500; letter-spacing: -0.02em; line-height: 1.12; margin: 0 0 22px; text-wrap: balance; }
dl.meta { display: grid; grid-template-columns: auto 1fr; gap: 6px 20px; margin: 0; font-size: var(--s-xs); }
dl.meta dt { color: var(--mute); }
dl.meta dd { margin: 0; }
.statement { font-family: var(--serif); font-size: var(--s-md); line-height: 1.62; max-width: 62ch; margin: 0; }
.statement p { margin: 0 0 1em; }
.statement .note { color: var(--mute); font-style: italic; }
.seq { display: grid; gap: 72px; justify-items: center; }
@media (max-width: 700px) { .seq { gap: 40px; } }
.seq figure { margin: 0; display: grid; gap: 10px; justify-items: start; width: 100%; }
.seq figure.center { justify-items: center; }
.seq figcaption { font-size: var(--s-xs); color: var(--mute); font-variant-numeric: tabular-nums; }
.pair { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; width: 100%; }
@media (max-width: 560px) { .pair { grid-template-columns: 1fr; } }
.player { aspect-ratio: 16 / 9; width: 100%; background: #111; position: relative; display: grid; place-items: center; cursor: default; }
.player .play { width: 74px; height: 74px; border-radius: 50%; border: 1.5px solid rgba(255,255,255,.75); display: grid; place-items: center; }
.player .play::before { content: ""; border-left: 20px solid rgba(255,255,255,.85); border-top: 12px solid transparent; border-bottom: 12px solid transparent; margin-left: 6px; }
.player .lbl { color: rgba(255,255,255,.5); }
.stills { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; width: 100%; }
@media (max-width: 560px) { .stills { grid-template-columns: 1fr 1fr; } }
.pnav { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; margin-top: 96px; padding-top: 22px; border-top: 1px solid var(--rule); font-size: var(--s-xs); color: var(--mute); }
.pnav a:hover { color: var(--ink); }
.pnav .nx { text-align: right; }
.pnav .ix { text-align: center; }
.pnav b { display: block; font-weight: 500; color: var(--ink); font-size: var(--s-sm); margin-top: 3px; }
@media (max-width: 560px) { .pnav .ix { display: none; } .pnav { grid-template-columns: 1fr 1fr; } }

/* collage */
.collage { columns: 3 240px; column-gap: 32px; width: 100%; }
.collage figure { break-inside: avoid; margin: 0 0 40px; display: grid; gap: 10px; }
@media (max-width: 560px) { .collage { columns: 2; column-gap: 14px; } .collage figure { margin-bottom: 24px; } }
.collage figcaption { font-size: var(--s-xs); color: var(--mute); }

/* photobook */
.book-sec { margin-top: 112px; padding-top: 28px; border-top: 1px solid var(--rule); display: grid; gap: 56px; }
.sec-head { display: grid; grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); gap: 12px 64px; align-items: baseline; }
@media (max-width: 860px) { .sec-head { grid-template-columns: 1fr; } }
.sec-head h2 { margin: 0; font-size: var(--s-lg); font-weight: 500; letter-spacing: -0.015em; }
.sec-head p { margin: 0; color: var(--mute); }
.flip { display: grid; justify-items: center; gap: 18px; padding-block: 48px; background: var(--well); margin-inline: calc(-1 * max(16px, env(safe-area-inset-left, 0px))); }
@media (min-width: 760px) { .flip { margin-inline: 0; } }
.flip-h { margin: 0 0 12px; font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--mute); font-weight: 500; }
.book { --bw: min(88vw, 960px, calc(70vh * 2 * var(--pr))); width: var(--bw); max-width: 92%; aspect-ratio: calc(2 * var(--pr)); position: relative; perspective: 2600px; cursor: pointer; transition: transform .8s cubic-bezier(.4,.1,.2,1); user-select: none; }
.book.closed-front { transform: translateX(-25%); }
.book.closed-back { transform: translateX(25%); }
.leaf { position: absolute; left: 50%; top: 0; width: 50%; height: 100%; transform-origin: left center; transform-style: preserve-3d; transition: transform .8s cubic-bezier(.4,.1,.2,1); }
.leaf.flipped { transform: rotateY(-180deg); }
.face { position: absolute; inset: 0; backface-visibility: hidden; -webkit-backface-visibility: hidden; }
.face.back { transform: rotateY(180deg); }
.pg { position: absolute; inset: 0; background: var(--page); box-shadow: 0 1px 2px rgba(0,0,0,.08); overflow: hidden; }
.pg.r { box-shadow: 0 2px 8px rgba(0,0,0,.10); background-image: linear-gradient(90deg, rgba(0,0,0,.13), rgba(0,0,0,0) 9%); }
.pg.l { box-shadow: 0 2px 8px rgba(0,0,0,.10); background-image: linear-gradient(270deg, rgba(0,0,0,.13), rgba(0,0,0,0) 9%); }
.pg.cover { background: var(--c); box-shadow: 0 6px 22px rgba(0,0,0,.22); padding: 10% 9%; color: #f1efe9; display: flex; flex-direction: column; justify-content: space-between; }
.cv-t { font-size: clamp(11px, 1.8vw, 22px); font-weight: 500; letter-spacing: -0.01em; }
.cv-a { font-size: clamp(9px, 1vw, 12px); letter-spacing: .08em; text-transform: uppercase; opacity: .75; }
.pg.img { background-color: var(--tone); }
.pg.blank { background-color: var(--page); }
.pg-lbl { position: absolute; left: 7%; top: 5%; font-size: clamp(6px, .75vw, 10px); letter-spacing: .06em; text-transform: uppercase; color: rgba(0,0,0,.38); }
.pg.cover .pg-lbl { color: rgba(255,255,255,.4); top: auto; bottom: 5%; left: auto; right: 7%; }
.pg.r .pg-lbl { left: 12%; }
.sample { position: absolute; font-family: "Songti SC", "Noto Serif SC", "SimSun", var(--serif); font-size: clamp(7px, 1.05vw, 14px); line-height: 1.6; color: #2b2a27; }
.hot { position: absolute; border-bottom: 1px dotted rgba(0,0,0,.45); cursor: help; border-radius: 2px; }
.hot:hover, .hot:focus-visible { background: rgba(255,255,255,.28); outline: none; }
.flip { position: relative; }
.bk-tip { position: absolute; z-index: 30; max-width: min(320px, 80vw); background: var(--ink); color: var(--paper); font-family: var(--serif); font-size: var(--s-sm); line-height: 1.5; padding: 9px 13px; pointer-events: none; box-shadow: 0 6px 18px rgba(0,0,0,.18); }
.flip-ctrl { display: flex; gap: 28px; align-items: center; font-size: var(--s-sm); color: var(--mute); margin-top: 10px; }
.flip-ctrl button { color: var(--ink); font-size: var(--s-md); }
.flip-ctrl button:disabled { color: var(--rule); cursor: default; }
.flip-hint { margin: 0; font-size: var(--s-xs); color: var(--mute); text-align: center; }
@media (max-width: 700px) {
  .flip { padding-block: 32px; margin-inline: calc(-1 * max(16px, env(safe-area-inset-left, 0px))); }
  .book { --bw: calc(100vw - 20px); max-width: none; }
  .flip-hint .desk { display: none; }
}
@media (min-width: 701px) { .flip-hint .touch { display: none; } }
@media (orientation: landscape) and (max-height: 500px) { .book { --bw: min(92vw, calc(78vh * 2 * var(--pr))); } }
@media (prefers-reduced-motion: reduce) { .leaf, .book { transition: none; } }

/* exhibitions */
.ex { display: grid; border-top: 1px solid var(--rule); }
.ex-row { display: grid; grid-template-columns: 90px minmax(0, 1fr) minmax(0, 1fr); gap: 8px 32px; padding-block: 22px; border-bottom: 1px solid var(--rule); }
@media (max-width: 760px) { .ex-row { grid-template-columns: 64px minmax(0, 1fr); } .ex-row .ex-works { grid-column: 2; } }
.ex-year { color: var(--mute); font-variant-numeric: tabular-nums; }
.ex-title { font-size: var(--s-md); font-weight: 500; margin: 0 0 4px; }
.ex-row p { margin: 0; color: var(--mute); }
.ex-works { color: var(--mute); font-size: var(--s-xs); }
.ex-works a { color: var(--ink); border-bottom: 1px solid var(--rule); }
.ex-works a:hover { border-bottom-color: var(--ink); }

/* about */
.about { display: grid; grid-template-columns: minmax(0, 4fr) minmax(0, 8fr); gap: 40px 64px; }
@media (max-width: 860px) { .about { grid-template-columns: 1fr; } }
.portrait { aspect-ratio: 4 / 5; cursor: default; }
.langs { display: flex; gap: 18px; margin-bottom: 22px; }
.langs button { color: var(--mute); padding-bottom: 2px; border-bottom: 1px solid transparent; }
.langs button.on { color: var(--ink); border-bottom-color: var(--ink); }
.bio { font-family: var(--serif); font-size: var(--s-md); line-height: 1.7; max-width: 62ch; }
.bio p { margin: 0 0 1em; }
.bio .note { color: var(--mute); font-style: italic; }
.bio[lang="zh"] { font-family: "Songti SC", "Noto Serif SC", "SimSun", var(--serif); line-height: 1.9; }
.cv { margin-top: 56px; display: grid; gap: 34px; max-width: 760px; }
.cv h2 { font-size: var(--s-xs); text-transform: uppercase; letter-spacing: .1em; color: var(--mute); font-weight: 500; margin: 0 0 12px; }
.cv ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.cv li { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; }
.cv li span:first-child { color: var(--mute); font-variant-numeric: tabular-nums; }

/* contact */
.contact { display: grid; gap: 26px; max-width: 560px; }
.contact p { margin: 0; font-family: var(--serif); font-size: var(--s-md); line-height: 1.6; }
.c-row { display: grid; grid-template-columns: 96px minmax(0, 1fr); gap: 16px; align-items: baseline; border-top: 1px solid var(--rule); padding-top: 14px; }
.c-row span:first-child { color: var(--mute); font-size: var(--s-xs); }
.c-val { font-size: var(--s-md); user-select: all; overflow-wrap: anywhere; }
.copy { margin-left: 14px; font-size: var(--s-xs); color: var(--mute); border-bottom: 1px solid var(--rule); }
.copy:hover { color: var(--ink); }

/* lightbox */
#lb { position: fixed; inset: 0; z-index: 20; background: var(--paper); display: grid; grid-template-rows: auto 1fr auto; padding-top: calc(18px + env(safe-area-inset-top, 0px)); padding-bottom: calc(18px + env(safe-area-inset-bottom, 0px)); padding-left: max(16px, env(safe-area-inset-left, 0px)); padding-right: max(16px, env(safe-area-inset-right, 0px)); }
#lb[hidden] { display: none; }
#lb .bar { display: flex; justify-content: space-between; font-size: var(--s-xs); color: var(--mute); }
#lb .stage { display: grid; place-items: center; min-height: 0; padding-block: 18px; }
#lb .stage .ph { cursor: default; }
#lb .ctrl { display: flex; justify-content: center; gap: 40px; font-size: var(--s-sm); color: var(--mute); }
#lb button:hover { color: var(--ink); }

.view { animation: fade .45s ease both; }
@keyframes fade { from { opacity: .001; transform: translateY(6px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .view { animation: none; } .slide { transition: none; } }

/* real images */
img.im { display: block; max-width: 100%; height: auto; background: var(--well); }
.im.zoom { cursor: zoom-in; }
.seq figure.center img.im { width: min(100%, calc(80vh * var(--r))); }
.pair img.im { width: 100%; }
.card img.im { width: 100%; aspect-ratio: 4 / 3; object-fit: cover; transition: opacity .25s; }
.card:hover img.im { opacity: .88; }
.slide img.im { max-width: 100%; max-height: 100%; width: auto; height: auto; background: none; }
@media (max-width: 700px) { .slide img.im { height: 100%; width: auto; max-width: none; max-height: none; margin-inline: auto; } }
.stills img.im { width: 100%; aspect-ratio: 16 / 9; object-fit: cover; }
.collage img.im { width: 100%; }
.about img.im { width: 100%; }
#lb .stage img.im { max-width: 100%; max-height: calc(100vh - 150px); width: auto; height: auto; background: none; }
.pg img.pimg { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; }
.pg.r::after, .pg.l::after { content: ""; position: absolute; inset: 0; pointer-events: none; }
.pg.r::after { background: linear-gradient(90deg, rgba(0,0,0,.16), rgba(0,0,0,0) 8%); }
.pg.l::after { background: linear-gradient(270deg, rgba(0,0,0,.16), rgba(0,0,0,0) 8%); }
.hot { z-index: 2; }
.player iframe { position: absolute; inset: 0; width: 100%; height: 100%; border: 0; }
.empty { color: var(--mute); font-family: var(--serif); font-size: var(--s-md); }

.statement .langs { margin-bottom: 16px; }
.statement .zh { font-family: "Songti SC", "Noto Serif SC", "SimSun", var(--serif); line-height: 1.9; }

/* flat copy of the open spread (sharp text); hidden while a page is turning */
.spread-static { position: absolute; inset: 0; z-index: 1000; pointer-events: none; }
.spread-static .ss { position: absolute; top: 0; width: 50%; height: 100%; }
.spread-static .ss.l { left: 0; } .spread-static .ss.r { left: 50%; }
.spread-static .pg { pointer-events: auto; }
.book.anim .spread-static { visibility: hidden; }
.book.closed-front, .book.closed-back { transform: none; }
.pg img.pimg { image-rendering: auto; }

/* thumbnail wall */
.wall { display: flex; align-items: flex-start; width: 100%; }
.wcol { flex: 1 1 0; min-width: 0; display: flex; flex-direction: column; }
.wi { display: block; cursor: zoom-in; }
.wi img.im { width: 100%; height: auto; aspect-ratio: var(--r); transition: opacity .2s; }
.wi:hover img.im { opacity: .85; }
.book-sec .wall { margin-top: -20px; }
/* lightbox caption */
#lb .ctrl { align-items: center; }
#lb .lb-mid { display: grid; justify-items: center; gap: 3px; min-width: 0; max-width: 60ch; text-align: center; }
#lbCap { color: var(--ink); font-size: var(--s-sm); }
#lbCap:empty { display: none; }
#lb .stage { touch-action: pan-y; }
@media (max-width: 560px) { #lb .ctrl { gap: 16px; } #lb .ctrl button { font-size: var(--s-xs); } }

/* photo groups in the lightbox */
.lb-group { display: flex; flex-direction: column; align-items: center; }
.lb-row { display: flex; justify-content: center; }
.lb-row img { display: block; object-fit: contain; }

.wall[data-style="rows"] { flex-direction: column; }
.wrow { display: flex; }
.wrow .wi { flex: none; overflow: hidden; }
.wrow .wi img.im { width: 100%; height: 100%; aspect-ratio: auto; object-fit: cover; }
.book-sec { width: 100%; justify-self: stretch; }
.views-sec { width: 100%; justify-self: stretch; margin-top: 72px; padding-top: 28px; border-top: 1px solid var(--rule); display: grid; gap: 36px; }
/* home slideshow: always fit the whole photo inside the frame (square and portrait included) */
.slide img.im { position: absolute; inset: 0; width: 100%; height: 100%; max-width: none; max-height: none; object-fit: contain; }
@media (max-width: 700px) { .slide img.im { position: static; width: auto; height: 100%; object-fit: initial; } }

/* right-to-left books: spine on the right, leaves turn towards the right */
.book.rtl .leaf { left: 0; transform-origin: right center; }
.book.rtl .leaf.flipped { transform: rotateY(180deg); }

/* exhibition photos */
.ex-works span { color: var(--ink); }
.ex-pics { grid-column: 2 / -1; display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.ex-pic { display: block; height: 96px; cursor: zoom-in; }
.ex-pic img.im { height: 100%; width: auto; transition: opacity .2s; }
.ex-pic:hover img.im { opacity: .85; }
@media (max-width: 760px) { .ex-pic { height: 72px; } }