/* ==========================================================================
   Z&K Design Studio — site styles
   Warm-paper default (Norm Architects tonality), optional darkroom mode
   ========================================================================== */

/* ---------- 1. tokens ---------- */
:root{
  --paper:#F5F1E5;   /* Norm's exact page background */
  --paper-2:#EFEADB;
  --paper-3:#E1DBD0;
  --ink:#383839;     /* Norm's body text */
  --ink-2:#66625B;
  --ink-3:#9A948A;
  --line:rgba(56,56,57,.16);
  --line-2:rgba(56,56,57,.09);
  --accent:#A2703F;
  --onDark:#FFFFFF;

  --serif:"Georgia","Times New Roman","Songti SC","STSong","SimSun",serif;
  --sans:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif;

  /* Norm-like restrained scale: labels 11 / body 14 / titles 18-32 */
  --t-xs:.6875rem;    /* 11 */
  --t-sm:.8125rem;    /* 13 */
  --t-base:.875rem;   /* 14 */
  --t-md:1rem;        /* 16 */
  --t-lg:1.125rem;    /* 18 */
  --t-xl:1.375rem;    /* 22 */
  --t-2xl:1.625rem;   /* 26 */
  --t-3xl:2rem;       /* 32 */
  --t-4xl:2.5rem;     /* 40 */

  --gap:clamp(20px,4vw,64px);
  --pad:clamp(20px,5vw,72px);
  --nav-h:78px;
  --ease:cubic-bezier(.22,.61,.36,1);
}
html[data-theme="dark"]{
  --paper:#111110;
  --paper-2:#191817;
  --paper-3:#232120;
  --ink:#F2EEE7;
  --ink-2:#B4ACA2;
  --ink-3:#837C73;
  --line:rgba(242,238,231,.16);
  --line-2:rgba(242,238,231,.08);
  --accent:#C79357;
}

/* ---------- 2. reset ---------- */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
html.snap-y{scroll-snap-type:y proximity}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:var(--sans);font-size:var(--t-base);line-height:1.7;
  -webkit-font-smoothing:antialiased;overflow-x:hidden;
  transition:background .5s var(--ease),color .5s var(--ease);
}
img{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
h1,h2,h3,h4,p,figure,blockquote{margin:0}
ul{margin:0;padding:0;list-style:none}
::selection{background:var(--accent);color:#fff}

/* ---------- 3. typography ---------- */
.eyebrow{
  font-size:var(--t-xs);letter-spacing:.24em;text-transform:uppercase;
  color:var(--ink-3);font-weight:600;
}
.display{font-family:var(--serif);font-weight:400;line-height:1.06;letter-spacing:-.015em}
.serif{font-family:var(--serif)}
.lede{font-size:var(--t-md);line-height:1.75;color:var(--ink-2)}
.muted{color:var(--ink-2)}
.rule{height:1px;background:var(--line);border:0;margin:0}

/* ---------- 4. nav ---------- */
.nav{
  position:fixed;inset:0 0 auto 0;height:var(--nav-h);z-index:60;
  display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--pad);color:#fff;
  transition:color .4s var(--ease),background .4s var(--ease);
}
.nav.scrolled,
body[data-nav="solid"] .nav{
  color:var(--ink);
  background:var(--paper);
  background:color-mix(in srgb,var(--paper) 88%,transparent);
  backdrop-filter:blur(14px);-webkit-backdrop-filter:blur(14px);
}
.brand{display:flex;align-items:center;gap:11px}
/* dual-image logo swap: white mark over the hero, softened ink once the nav
   turns solid; darkroom mode always uses the light mark */
.brand .mark-logo{
  display:block;height:31px;width:auto;
  transition:opacity .35s var(--ease);
}
.brand .l-ink{display:none}
.nav.scrolled .brand .l-light,
body[data-nav="solid"] .brand .l-light{display:none}
.nav.scrolled .brand .l-ink,
body[data-nav="solid"] .brand .l-ink{display:block}
html[data-theme="dark"] .brand .l-ink{display:none!important}
html[data-theme="dark"] .brand .l-light{display:block!important}
.nav-links{display:flex;align-items:center;gap:clamp(16px,2.4vw,34px)}
.nav-links a{
  font-size:var(--t-xs);letter-spacing:.2em;text-transform:uppercase;
  padding:4px 0;opacity:.9;transition:opacity .3s;
}
.nav-links a:hover{opacity:.6}
.nav-links a[aria-current="page"]{opacity:1}
.nav-tools{display:flex;align-items:center;gap:18px}

/* work dropdown */
.nav-drop{position:relative}
.nav-drop .drop{
  position:absolute;left:50%;top:calc(100% + 18px);transform:translateX(-50%) translateY(8px);
  min-width:210px;background:var(--paper);padding:12px 0;
  box-shadow:0 20px 48px rgba(20,17,15,.16);
  opacity:0;visibility:hidden;z-index:70;
  transition:opacity .3s var(--ease),transform .3s var(--ease),visibility .3s;
}
.nav-drop.open .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
@media(hover:hover) and (pointer:fine){
  .nav-drop:hover .drop,.nav-drop:focus-within .drop{opacity:1;visibility:visible;transform:translateX(-50%) translateY(0)}
}
.nav-drop .drop a{
  display:block;padding:10px 24px;font-size:var(--t-xs);letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-2);white-space:nowrap;
}
.nav-drop .drop a:hover{color:var(--ink)}
.nav-drop .drop a[aria-current="page"]{color:var(--ink)}
.icon-btn{
  width:34px;height:34px;display:grid;place-items:center;border-radius:50%;
  border:1px solid currentColor;opacity:.7;transition:opacity .3s var(--ease),background .3s var(--ease)
}
.icon-btn:hover{opacity:1}
.icon-btn svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.4}
.burger{display:none}

/* ---------- 5. hero (index) ---------- */
.hero{position:relative;height:100svh;min-height:600px;overflow:hidden;background:#141110}
.hero-slide{position:absolute;inset:0;opacity:0;transition:opacity 1.4s var(--ease)}
.hero-slide.active{opacity:1}
.hero-slide img{
  width:100%;height:100%;object-fit:cover;
  transform:scale(1.06);transition:transform 9s linear;
}
.hero-slide.active img{transform:scale(1.15)}
.hero::after{
  content:"";position:absolute;inset:0;pointer-events:none;
  background:linear-gradient(180deg,rgba(10,9,8,.42) 0%,rgba(10,9,8,.06) 34%,rgba(10,9,8,.12) 58%,rgba(10,9,8,.72) 100%);
}
.hero-body{
  position:absolute;inset:auto 0 0 0;z-index:2;color:#fff;
  padding:0 var(--pad) clamp(34px,6vh,72px);
  display:flex;align-items:flex-end;justify-content:space-between;gap:32px;
}
.hero-tag{display:block;font-size:var(--t-xs);letter-spacing:.26em;text-transform:uppercase;opacity:.82;margin-bottom:16px}
.hero-title{
  font-family:var(--serif);font-weight:400;line-height:1.02;letter-spacing:-.02em;
  font-size:clamp(1.8rem,4.2vw,3.2rem);margin-bottom:14px;max-width:16ch;
}
.hero-sub{font-size:var(--t-sm);letter-spacing:.06em;opacity:.85}
.hero-dots{position:absolute;right:var(--pad);bottom:clamp(58px,10vh,98px);z-index:3;display:flex;gap:10px}
.hero-dots button{
  width:26px;height:26px;display:grid;place-items:center;
}
.hero-dots button::before{
  content:"";width:7px;height:7px;border-radius:50%;background:rgba(255,255,255,.42);
  transition:background .3s var(--ease),transform .3s var(--ease);
}
.hero-dots button.active::before{background:#fff;transform:scale(1.35)}
.hero-arrows{position:absolute;right:var(--pad);bottom:clamp(24px,4.5vh,50px);z-index:3;display:flex;gap:10px}
.hero-arrows button{
  width:44px;height:44px;border:1px solid rgba(255,255,255,.4);border-radius:50%;
  display:grid;place-items:center;color:#fff;transition:background .3s var(--ease),border-color .3s
}
.hero-arrows button:hover{background:rgba(255,255,255,.14);border-color:#fff}
.hero-arrows svg{width:15px;height:15px;fill:none;stroke:currentColor;stroke-width:1.3}

/* ---------- 6. section shell ---------- */
.section{padding:clamp(72px,11vw,150px) var(--pad)}
.section--tight{padding-top:clamp(48px,7vw,90px)}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;gap:24px;margin-bottom:clamp(32px,5vw,64px);flex-wrap:wrap}
.sec-head h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.5rem,2.6vw,2.1rem);line-height:1.15;letter-spacing:-.01em}
.sec-head .eyebrow{margin-bottom:10px}

/* statement */
.statement{padding:clamp(80px,13vw,170px) var(--pad);background:var(--paper-2);text-align:center}
.statement p{
  font-family:var(--serif);font-size:clamp(1.15rem,2.2vw,1.6rem);line-height:1.42;
  max-width:22ch;margin:0 auto;letter-spacing:-.01em;
}
.statement .s-lead{
  max-width:none;font-size:clamp(1.55rem,3vw,2.35rem);line-height:1.3;
}
.statement .s-sub{
  max-width:58ch;font-size:clamp(1.02rem,1.7vw,1.28rem);line-height:1.75;
  color:var(--ink-2);margin-top:clamp(20px,2.6vw,34px);letter-spacing:0;
}
.statement .zh{
  font-family:var(--sans);font-size:var(--t-md);line-height:2;color:var(--ink-2);
  max-width:34ch;margin:34px auto 0;letter-spacing:.04em;
}

/* ---------- 7. category cards ---------- */
.cats{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(14px,2vw,28px)}
.cat{display:block;position:relative}
.cat .frame{position:relative;overflow:hidden;background:var(--paper-3);aspect-ratio:3/4}
.cat img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease),filter .6s var(--ease)}
.cat:hover img{transform:scale(1.06)}
.cat .overlay{
  position:absolute;inset:0;background:linear-gradient(180deg,rgba(12,10,9,0) 40%,rgba(12,10,9,.62) 100%);
  opacity:0;transition:opacity .5s var(--ease);
}
.cat:hover .overlay{opacity:1}
.cat .go{
  position:absolute;left:20px;bottom:20px;color:#fff;font-size:var(--t-xs);
  letter-spacing:.22em;text-transform:uppercase;opacity:0;transform:translateY(8px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.cat:hover .go{opacity:1;transform:none}
.cat .cap{display:flex;align-items:baseline;justify-content:space-between;padding-top:16px;gap:12px}
.cat .cap h3{font-family:var(--serif);font-weight:400;font-size:var(--t-lg);line-height:1.2}

/* ---------- 8. approach / services ---------- */
.cols3{display:grid;grid-template-columns:repeat(3,1fr);gap:clamp(26px,4vw,64px)}
.cols4{display:grid;grid-template-columns:repeat(4,1fr);gap:clamp(22px,3vw,48px)}
.cols4 article{border-top:1px solid var(--line);padding-top:22px}
.cols4 .num{font-family:var(--serif);font-size:var(--t-xl);color:var(--accent);display:block;margin-bottom:10px}
.cols4 h3{font-family:var(--serif);font-weight:400;font-size:var(--t-xl);margin-bottom:10px;line-height:1.25}
.cols4 p{color:var(--ink-2);font-size:var(--t-sm);line-height:1.8}
.cols3 article{border-top:1px solid var(--line);padding-top:22px}
.cols3 .num{font-family:var(--serif);font-size:var(--t-xl);color:var(--accent);display:block;margin-bottom:10px}
.cols3 h3{font-family:var(--serif);font-weight:400;font-size:var(--t-xl);margin-bottom:10px;line-height:1.25}
.cols3 p{color:var(--ink-2);font-size:var(--t-sm);line-height:1.8}

/* awards list */
.awards{border-top:1px solid var(--line)}
.awards li{
  display:flex;justify-content:space-between;align-items:baseline;gap:20px;
  padding:20px 0;border-bottom:1px solid var(--line-2);
}
.awards .yr{font-family:var(--serif);color:var(--ink-3);white-space:nowrap;font-size:var(--t-sm)}

/* ---------- 9. work page ---------- */

/* immersive */
.imm{position:relative}
.imm-item{
  min-height:100svh;scroll-snap-align:start;
  display:flex;flex-direction:column;justify-content:center;
  padding:clamp(48px,7vh,90px) var(--pad) clamp(40px,6vh,70px);
  border-bottom:1px solid var(--line-2);
}
@media(min-width:1101px){body.imm-mode .imm-item{padding-right:272px}}
.imm-link{display:block}
.imm-figure{position:relative;overflow:hidden;background:var(--paper-3);height:min(70vh,720px)}
.imm-figure img{width:100%;height:100%;object-fit:cover;transition:transform 1.2s var(--ease)}
.imm-link:hover .imm-figure img{transform:scale(1.025)}
.imm-figure::after{content:"";position:absolute;inset:0;box-shadow:inset 0 0 0 1px var(--line-2)}
.imm-meta{display:flex;align-items:flex-end;justify-content:space-between;gap:28px;padding-top:22px;flex-wrap:wrap}
.imm-meta h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.3rem,2.2vw,1.8rem);line-height:1.12;letter-spacing:-.015em}
.imm-meta .zh{display:block;font-family:var(--sans);font-size:var(--t-sm);color:var(--ink-3);letter-spacing:.08em;margin-top:8px}
.imm-meta .spec{display:flex;gap:clamp(14px,2.2vw,34px);font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);flex-wrap:wrap}
.imm-meta .spec b{font-weight:600;color:var(--ink-2)}
.open-link{
  display:inline-flex;align-items:center;gap:10px;font-size:var(--t-xs);letter-spacing:.2em;
  text-transform:uppercase;color:var(--ink-2);
  transition:color .3s
}
.open-link:hover{color:var(--accent)}
.open-link svg{width:13px;height:13px;fill:none;stroke:currentColor;stroke-width:1.4}

/* right project index rail */
.rail{
  position:fixed;right:22px;top:50%;transform:translateY(-50%);z-index:35;
  width:212px;max-height:74vh;overflow:hidden;
  display:none;
}
.rail-inner{display:flex;flex-direction:column;gap:2px}
.rail .rail-top{
  font-size:10px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);
  padding-bottom:12px;border-bottom:1px solid var(--line);margin-bottom:8px;
  display:flex;justify-content:space-between
}
.rail a{
  font-size:11.5px;letter-spacing:.04em;color:var(--ink-3);padding:4px 0 4px 14px;position:relative;
  transition:color .3s var(--ease);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;
}
.rail a::before{
  content:"";position:absolute;left:0;top:50%;width:8px;height:1px;background:var(--line);
  transition:width .3s var(--ease),background .3s var(--ease)
}
.rail a:hover{color:var(--ink)}
.rail a.on{color:var(--ink)}
.rail a.on::before{width:18px;background:var(--accent)}
body.imm-mode .rail{display:block}

/* next-project cue */
.next-cue{
  position:fixed;left:50%;bottom:26px;transform:translateX(-50%);z-index:36;display:none;
  align-items:center;gap:12px;padding:11px 20px;border-radius:999px;
  background:var(--paper);
  background:color-mix(in srgb,var(--paper) 82%,transparent);
  backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);
  border:1px solid var(--line);font-size:11px;letter-spacing:.2em;text-transform:uppercase;color:var(--ink-2);
  transition:color .3s,border-color .3s;
}
.next-cue:hover{color:var(--accent);border-color:var(--accent)}
.next-cue svg{width:12px;height:12px;fill:none;stroke:currentColor;stroke-width:1.5}
body.imm-mode .next-cue{display:flex}

/* index grid (Studio KO-like, three per row) */
.grid-wrap{padding:calc(var(--nav-h) + clamp(20px,3.5vw,44px)) var(--pad) clamp(70px,10vw,130px)}
.cat-title{
  text-align:center;font-weight:400;
  font-size:var(--t-sm);letter-spacing:.42em;text-transform:uppercase;
  color:var(--ink);text-indent:.42em;
  margin:clamp(24px,5vh,56px) 0 clamp(44px,8vh,92px);
}
.grid12{display:grid;grid-template-columns:repeat(12,1fr);gap:clamp(30px,3.4vw,56px) clamp(18px,2.2vw,36px)}
.grid12 .cell{grid-column:span 12}
@media(min-width:600px) and (max-width:899px){
  .grid12 .cell{grid-column:span 6}
}
@media(min-width:900px){
  .grid12 .cell{grid-column:span 4}
}
.cell a{display:block}
.cell .frame{overflow:hidden;background:var(--paper-3);aspect-ratio:4/3}
.cell img{width:100%;height:100%;object-fit:cover;transition:transform 1.1s var(--ease)}
.cell a:hover img{transform:scale(1.05)}
/* Norm-like caption: title on its own line, category beneath */
.cell .cap{display:block;padding-top:16px}
.cell .cap h3{font-family:var(--serif);font-weight:400;font-size:var(--t-lg);line-height:1.3}
.cell .cap span{display:block;margin-top:7px;font-size:var(--t-xs);letter-spacing:.16em;text-transform:uppercase;color:var(--ink-3)}

/* ---------- 10. project detail ---------- */
.pj-hero{position:relative;height:88svh;min-height:520px;overflow:hidden;background:#141110}
.pj-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.pj-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,9,8,.45),rgba(10,9,8,.1) 40%,rgba(10,9,8,.7))}
.pj-hero-body{position:absolute;inset:auto 0 0 0;z-index:2;color:#fff;padding:0 var(--pad) clamp(30px,5vh,60px)}
.pj-hero-body h1{font-family:var(--serif);font-weight:400;font-size:clamp(1.7rem,3.6vw,2.6rem);line-height:1.08;letter-spacing:-.02em}
.pj-hero-body .zh{display:block;font-size:var(--t-md);opacity:.88;margin-top:12px;letter-spacing:.06em}
.pj-hero-body .eyebrow{color:rgba(255,255,255,.72);margin-bottom:14px}

.pj-info{display:grid;grid-template-columns:1fr 1.15fr;gap:clamp(30px,5vw,80px);padding:clamp(48px,7vw,96px) var(--pad)}
.pj-specs{display:grid;gap:14px}
.pj-specs div{display:grid;grid-template-columns:minmax(96px,150px) 1fr;gap:24px;align-items:baseline;font-size:var(--t-sm)}
.pj-specs dt{color:var(--ink-3);letter-spacing:.14em;text-transform:uppercase;font-size:var(--t-xs)}
.pj-specs dd{margin:0;text-align:left;color:var(--ink)}
.pj-text{padding-top:32px}
.pj-text p{font-size:var(--t-md);line-height:1.85;color:var(--ink-2)}
.pj-text .zh{font-size:var(--t-base);line-height:2;color:var(--ink-2);margin-top:22px}
.pj-awards{margin-top:26px}
.pj-awards li{font-size:var(--t-sm);color:var(--ink-2);padding:5px 0;list-style:none}

.gallery{padding:0 var(--pad) clamp(60px,9vw,110px)}
/* long-form paragraphs dropped between the plates (Norm-style narrative rhythm) */
.pj-body{max-width:min(124ch,88%);margin:clamp(26px,4.5vw,70px) auto}
.pj-body p{font-size:var(--t-md);line-height:1.9;color:var(--ink-2);letter-spacing:.005em}
.g-row{--gg:clamp(8px,1vw,18px);display:flex;gap:var(--gg);margin-bottom:clamp(30px,4vw,64px)}
.g-row figure{margin:0;min-width:0}
.g-row.triple{display:grid;grid-template-columns:repeat(3,1fr)}
.g-row.triple.n2{grid-template-columns:repeat(2,1fr)}
.g-row.triple.n1{grid-template-columns:1fr}
.g-row.tl img{aspect-ratio:4/3;object-fit:cover}
.g-row.tp img{aspect-ratio:3/4;object-fit:cover}
.g-row.n1 img{aspect-ratio:16/9;object-fit:cover}
.g-row.wide img{aspect-ratio:16/9;object-fit:cover}
.g-row.wide,.g-row.n1{display:block}
.g-row.wide figure,.g-row.n1 figure{width:100%}
/* lone portrait row: never 16:9 — narrow centered portrait instead */
.g-row.p1{display:block;max-width:min(62%,880px);margin-left:auto;margin-right:auto}
.g-row.p1 img{aspect-ratio:3/4;object-fit:cover}
/* duo shares the trio's three-column grid: wide plate = 2 columns + gap,
   portrait = 1 column, so seams align with the rows above and below */
.g-row.duo{display:grid;align-items:stretch;gap:var(--gg);
  grid-template-columns:calc((100% - 2*var(--gg))/3*2 + var(--gg)) calc((100% - 2*var(--gg))/3)}
.g-row.duo.rev{grid-template-columns:calc((100% - 2*var(--gg))/3) calc((100% - 2*var(--gg))/3*2 + var(--gg))}
.g-row.duo figure{display:flex;flex-direction:column;min-width:0}
.g-row.duo img{width:100%;flex:1 1 0;min-height:0;height:auto;object-fit:cover}
.g-row.duo figure.pt img{flex:none;aspect-ratio:3/4;height:auto;object-fit:cover}
.gallery img{width:100%;height:auto;display:block}
.gallery figcaption{font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-3);padding-top:10px}
@media(max-width:899px){
  .g-row.triple{grid-template-columns:repeat(2,1fr)}
  .g-row.triple > figure:last-child{grid-column:1/-1}
  .g-row.triple.tl > figure:last-child img{aspect-ratio:16/9}
}
@media(max-width:600px){
  .g-row{flex-direction:column}
  .g-row.triple{grid-template-columns:1fr}
  .g-row.triple > figure:last-child{grid-column:auto}
  .g-row.duo,.g-row.duo.rev{grid-template-columns:1fr}
  .g-row.duo figure{flex:none !important}
  .g-row.duo img{flex:none;height:auto}
}

.pj-nav{border-top:1px solid var(--line);display:grid;grid-template-columns:1fr 1fr}
.pj-nav a{padding:clamp(34px,5vw,60px) var(--pad);transition:background .4s var(--ease)}
.pj-nav a:hover{background:var(--paper-2)}
.pj-nav a+a{border-left:0;text-align:right}
.pj-nav .k{font-size:var(--t-xs);letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);display:block;margin-bottom:10px}
.pj-nav .v{font-family:var(--serif);font-size:clamp(1.1rem,2vw,1.4rem);line-height:1.2}

/* ---------- 11. studio ---------- */
.st-hero{position:relative;height:70svh;min-height:460px;overflow:hidden;background:#141110}
.st-hero img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover;opacity:.92}
.st-hero::after{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(10,9,8,.5),rgba(10,9,8,.14) 45%,rgba(10,9,8,.66))}
.st-hero-body{position:absolute;inset:auto 0 0 0;z-index:2;color:#fff;padding:0 var(--pad) clamp(30px,5vh,60px)}
.st-hero-body h1{font-family:var(--serif);font-weight:400;font-size:clamp(1.8rem,4vw,2.8rem);line-height:1.06;letter-spacing:-.02em}

.split{display:grid;grid-template-columns:1fr 1.2fr;gap:clamp(30px,6vw,90px)}
.split .left .eyebrow{margin-bottom:14px}
.split h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.3rem,2.2vw,1.8rem);line-height:1.2;letter-spacing:-.01em}
.big-p{font-size:var(--t-md);line-height:1.9;color:var(--ink-2)}
.big-p+p{margin-top:20px}

.people{display:grid;grid-template-columns:repeat(2,1fr);gap:clamp(24px,4vw,60px)}
.person{border-top:1px solid var(--line);padding-top:22px}
.person-photo{margin:0 0 20px;overflow:hidden;background:var(--paper-2)}
.person-photo img{
  display:block;width:100%;aspect-ratio:4/5;object-fit:cover;object-position:50% 50%;
}
.person h3{font-family:var(--serif);font-weight:400;font-size:var(--t-xl);margin-bottom:4px}
.person .role{font-size:var(--t-xs);letter-spacing:.2em;text-transform:uppercase;color:var(--accent);margin-bottom:16px}
.person p{font-size:var(--t-sm);line-height:1.85;color:var(--ink-2)}

.tags{display:flex;flex-wrap:wrap;gap:8px}
.tags li{
  font-size:var(--t-xs);letter-spacing:.14em;text-transform:uppercase;color:var(--ink-2);
  border:1px solid var(--line);border-radius:999px;padding:7px 15px;
}

/* ---------- 11c. 404 ---------- */
.nf{min-height:74svh;display:flex;flex-direction:column;justify-content:center;
    padding:calc(var(--nav-h) + 40px) var(--pad) clamp(60px,9vw,110px)}
.nf h1{font-family:var(--serif);font-weight:400;font-size:clamp(1.7rem,3.8vw,2.6rem);
       line-height:1.05;letter-spacing:-.02em;margin:18px 0 14px;max-width:18ch}
.nf .zh{color:var(--ink-3);font-size:var(--t-md)}
.nf-links{display:flex;gap:clamp(20px,3vw,44px);flex-wrap:wrap;margin-top:clamp(34px,5vw,56px)}

/* ---------- 11b. lightbox ---------- */
.lb{position:fixed;inset:0;z-index:200;display:none;background:rgba(10,9,8,.96);
    -webkit-backdrop-filter:blur(6px);backdrop-filter:blur(6px);
    opacity:1;transition:opacity .32s var(--ease)}
.lb.open{display:block}
.lb.fade{opacity:0}
.lb-stage{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;
          padding:clamp(20px,6vh,64px) clamp(16px,7vw,110px)}
.lb-stage img{max-width:100%;max-height:100%;width:auto;height:auto;object-fit:contain;
             opacity:1;transition:opacity .18s linear;
             box-shadow:0 30px 90px rgba(0,0,0,.55)}
.lb-stage img.switch{opacity:0}
.lb-bar{position:absolute;left:0;right:0;bottom:0;z-index:3;color:rgba(255,255,255,.72);
        padding:0 clamp(16px,7vw,110px) clamp(16px,3vh,30px);
        display:flex;justify-content:space-between;align-items:flex-end;gap:20px;
        font-size:var(--t-xs);letter-spacing:.2em;text-transform:uppercase;pointer-events:none}
.lb-cap b{display:block;font-family:var(--serif);font-size:var(--t-lg);letter-spacing:0;
          text-transform:none;color:#fff;font-weight:400;margin-bottom:6px}
.lb-count{font-variant-numeric:tabular-nums;white-space:nowrap}
.lb-btn{position:absolute;z-index:4;top:50%;transform:translateY(-50%);
        width:52px;height:52px;display:grid;place-items:center;border-radius:50%;
        border:1px solid rgba(255,255,255,.22);color:#fff;background:rgba(255,255,255,.06);
        transition:background .3s var(--ease),border-color .3s var(--ease)}
.lb-btn:hover{background:rgba(255,255,255,.16);border-color:rgba(255,255,255,.5)}
.lb-btn svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.4}
.lb-prev{left:clamp(10px,2.4vw,30px)}
.lb-next{right:clamp(10px,2.4vw,30px)}
.lb-close{position:absolute;z-index:4;top:clamp(14px,2.6vh,30px);right:clamp(14px,2.6vw,34px);
          width:44px;height:44px;display:grid;place-items:center;border-radius:50%;
          border:1px solid rgba(255,255,255,.22);color:#fff;background:rgba(255,255,255,.06)}
.lb-close:hover{background:rgba(255,255,255,.16)}
.lb-close svg{width:18px;height:18px;fill:none;stroke:currentColor;stroke-width:1.4}
@media(max-width:700px){
  .lb-stage{padding:64px 12px 96px}
  .lb-btn{width:42px;height:42px}
  .lb-bar{flex-direction:column;align-items:flex-start;gap:8px}
}
.lb-zoomed{cursor:zoom-in}
body.lb-open{overflow:hidden}

/* ---------- 12. contact + footer ---------- */
.contact{padding:clamp(70px,10vw,140px) var(--pad);background:var(--paper-2)}
.contact h2{font-family:var(--serif);font-weight:400;font-size:clamp(1.6rem,3vw,2.2rem);line-height:1.15;letter-spacing:-.02em;max-width:18ch}
.contact-grid{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(30px,6vw,80px);margin-top:clamp(34px,5vw,58px)}
.contact-block+.contact-block{margin-top:28px}
.contact-block .k{font-size:var(--t-xs);letter-spacing:.22em;text-transform:uppercase;color:var(--ink-3);display:block;margin-bottom:8px}
.contact-block a,.contact-block p{font-family:var(--serif);font-size:var(--t-lg);line-height:1.5}

footer{background:#141110;color:#EFEAE2;padding:clamp(46px,7vw,84px) var(--pad) 34px}
footer .fgrid{display:grid;grid-template-columns:1.4fr 1fr 1fr;gap:clamp(24px,4vw,60px);padding-bottom:44px}
footer h4{font-size:var(--t-xs);letter-spacing:.22em;text-transform:uppercase;color:rgba(239,234,226,.5);margin-bottom:16px;font-weight:600}
footer li+li{margin-top:9px}
footer a,footer p{font-size:var(--t-sm);color:rgba(239,234,226,.82);line-height:1.8}
footer a:hover{color:#fff}
footer .fmark{display:flex;align-items:center;gap:12px;margin-bottom:14px}
footer .fmark-logo{height:26px;width:auto;display:block}
footer .fmark-zh{font-size:1rem;letter-spacing:.3em;opacity:.6}
.fbottom{border-top:1px solid rgba(239,234,226,.14);padding-top:22px;display:flex;justify-content:space-between;gap:18px;flex-wrap:wrap;font-size:var(--t-xs);color:rgba(239,234,226,.5);letter-spacing:.06em}

/* ---------- 12b. focus ---------- */
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.lb :focus-visible,.nav :focus-visible{outline-color:#fff}
.skip{position:absolute;left:-9999px;top:0;z-index:300;background:var(--ink);color:var(--paper);
      padding:12px 18px;font-size:var(--t-sm);letter-spacing:.1em}
.skip:focus{left:12px;top:12px}

/* ---------- 13. reveal ---------- */
.reveal{opacity:0;transform:translateY(26px);transition:opacity 1s var(--ease),transform 1s var(--ease)}
.reveal.in{opacity:1;transform:none}
@media(prefers-reduced-motion:reduce){
  .reveal{opacity:1;transform:none}
  html{scroll-behavior:auto}
  .hero-slide img{transition:none;transform:none}
}

/* ---------- 14. responsive ---------- */
@media(max-width:1100px){
  .cats{grid-template-columns:repeat(2,1fr)}
  .cols4{grid-template-columns:repeat(2,1fr)}
  body.imm-mode .rail{display:none}
}
@media(max-width:900px){
  .cols3{grid-template-columns:1fr}
  .cols4{grid-template-columns:1fr}
  .pj-info,.split,.contact-grid{grid-template-columns:1fr}
  .people{grid-template-columns:1fr}
  footer .fgrid{grid-template-columns:1fr 1fr}
  .nav-links{display:none}
  .burger{display:grid}
  .hero-arrows{bottom:auto;top:calc(var(--nav-h) + 18px)}
  .hero-dots{bottom:clamp(120px,20vh,190px)}
}
@media(max-width:600px){
  .cats{grid-template-columns:1fr}
  footer .fgrid{grid-template-columns:1fr}
  .pj-nav{grid-template-columns:1fr}
  .pj-nav a+a{border-left:0;border-top:1px solid var(--line);text-align:left}
  .hero-body{flex-direction:column;align-items:flex-start;gap:18px}
  .imm-meta{flex-direction:column;align-items:flex-start}
}

/* mobile menu */
.mmenu{
  position:fixed;inset:0;z-index:55;background:var(--paper);color:var(--ink);
  display:flex;flex-direction:column;justify-content:center;gap:6px;padding:var(--pad);
  transform:translateY(-100%);transition:transform .6s var(--ease);
}
.mmenu.open{transform:none}
.mmenu a{font-family:var(--serif);font-size:1.8rem;line-height:1.5}
.mmenu .mzh{font-size:var(--t-sm);color:var(--ink-3);letter-spacing:.1em;margin-left:12px}
.mmenu-cats{display:flex;flex-wrap:wrap;gap:10px 24px;margin:2px 0 10px}
.mmenu-cats a{font-family:var(--sans);font-size:var(--t-xs);letter-spacing:.18em;text-transform:uppercase;color:var(--ink-2);line-height:1.6}

/* ==========================================================================
   BILINGUAL — EN / 中文
   Paired blocks: mark the English one data-lang="en" and the Chinese one
   data-lang="cn"; the active language is echoed onto <html data-lang>.
   ========================================================================== */
html[data-lang="en"] [data-lang="cn"]{display:none !important}
html[data-lang="cn"] [data-lang="en"]{display:none !important}

.zh-alt{
  margin-top:14px;font-family:var(--sans);font-size:15px;line-height:1.95;
  color:var(--ink-2);text-align:justify;
}
.person .zh-alt{margin-top:14px;font-size:14px;line-height:1.9}

.lang-toggle{
  display:inline-flex;align-items:center;gap:7px;background:none;border:0;
  padding:0 2px;margin-right:6px;cursor:pointer;color:inherit;font:inherit;
  line-height:1;
}
.lang-opt{
  font-family:var(--sans);font-size:11px;letter-spacing:.14em;
  text-transform:uppercase;opacity:.35;transition:opacity .25s var(--ease);
}
.lang-opt[data-lang-set="cn"]{letter-spacing:.06em;text-transform:none;font-size:12px}
.lang-opt.on{opacity:1}
.lang-sep{font-size:11px;opacity:.25}
.lang-toggle:hover .lang-opt{opacity:.65}
.lang-toggle:hover .lang-opt.on{opacity:1}
.lang-toggle.in-menu{
  margin:22px 0 0;padding:18px 0 0;width:100%;justify-content:flex-start;
  border-top:1px solid var(--line-2);
}
.lang-toggle.in-menu .lang-opt{font-size:13px}
@media(max-width:600px){
  .lang-toggle{margin-right:2px}
  .lang-opt{font-size:10px}
}