/* SUNSLION DESIGN — site styles. No external fonts (works fast from mainland China). */
:root{
  --ink:#141414; --paper:#fbfaf7; --soft:#f1efe9; --muted:#7b7a75; --line:#e3e1da;
  --accent:#ffe100; --max:1320px; --gut:clamp(16px,4vw,48px);
  --sans:"Helvetica Neue",Helvetica,Arial,"PingFang SC","Hiragino Sans GB","Microsoft YaHei","Noto Sans SC",sans-serif;
  --serif:Georgia,"Times New Roman","Songti SC","STSong","Noto Serif SC",serif;
  --ease:cubic-bezier(.17,.84,.44,1);
}
*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:var(--sans);color:var(--ink);background:var(--paper);line-height:1.7;font-size:16px;-webkit-font-smoothing:antialiased}
img{display:block;max-width:100%;height:auto}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;cursor:pointer}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gut)}
.wrap-narrow{max-width:960px;margin:0 auto;padding:0 var(--gut)}
.muted{color:var(--muted)}
.kicker{font-size:12px;letter-spacing:.24em;text-transform:uppercase;color:var(--muted)}
.tag{display:inline-block;font-size:11px;letter-spacing:.18em;text-transform:uppercase;padding:3px 8px;background:var(--accent);color:#111}
.btn{display:inline-block;margin-top:28px;padding:12px 22px;border:1px solid var(--ink);font-size:14px;letter-spacing:.06em;transition:background .25s,color .25s}
.btn:hover{background:var(--ink);color:var(--paper)}
.btn.light{border-color:#fff;color:#fff}.btn.light:hover{background:#fff;color:#111}
h1,h2,h3{font-weight:500;letter-spacing:.01em;line-height:1.25}

/* header */
.hdr{position:fixed;inset:0 0 auto 0;z-index:50;display:flex;align-items:center;justify-content:space-between;gap:24px;padding:14px var(--gut);background:rgba(251,250,247,.86);backdrop-filter:saturate(1.4) blur(14px);-webkit-backdrop-filter:saturate(1.4) blur(14px);border-bottom:1px solid transparent;transition:border-color .3s,background .3s}
.hdr.scrolled{border-color:var(--line)}
.brand{display:flex;align-items:center;gap:12px}
.brand img{height:40px;width:auto}
.brand span{display:flex;flex-direction:column;font-size:15px;line-height:1.2;letter-spacing:.12em}
.brand small{font-size:9px;letter-spacing:.32em;color:var(--muted)}
.nav{display:flex;align-items:center;gap:30px;font-size:14px;letter-spacing:.08em}
.nav a{position:relative;padding:4px 0}
.nav a::after{content:"";position:absolute;left:0;right:0;bottom:-2px;height:2px;background:var(--accent);transform:scaleX(0);transform-origin:left;transition:transform .3s var(--ease)}
.nav a:hover::after,.nav a.on::after{transform:scaleX(1)}
.nav .lang{border:1px solid var(--ink);padding:3px 10px;font-size:12px}
.nav .lang::after{display:none}
.burger{display:none;width:36px;height:36px;position:relative}
.burger i{position:absolute;left:8px;right:8px;height:1.5px;background:var(--ink);transition:transform .3s,top .3s}
.burger i:first-child{top:14px}.burger i:last-child{top:21px}
.burger[aria-expanded=true] i:first-child{top:17px;transform:rotate(45deg)}
.burger[aria-expanded=true] i:last-child{top:17px;transform:rotate(-45deg)}
main{padding-top:64px}

/* hero slideshow */
.hero{position:relative;height:calc(100svh - 64px);min-height:440px;max-height:900px;overflow:hidden;background:#111}
.slide{position:absolute;inset:0;background-size:cover;background-position:center;opacity:0;transform:scale(1.04);transition:opacity 1.2s var(--ease),transform 6s linear;display:flex;align-items:flex-end}
.slide.on{opacity:1;transform:scale(1);z-index:1}
.slide::before{content:"";position:absolute;inset:0;background:linear-gradient(180deg,rgba(0,0,0,0) 45%,rgba(0,0,0,.6))}
.slide-txt{position:relative;color:#fff;padding:0 var(--gut) 72px;max-width:var(--max);width:100%;margin:0 auto}
.slide-txt .kicker{color:rgba(255,255,255,.75)}
.slide-txt h2{font-size:clamp(32px,6vw,72px);margin:8px 0 6px}
.slide-txt p{font-size:clamp(15px,1.6vw,19px);opacity:.9}
.dots{position:absolute;z-index:2;right:var(--gut);bottom:32px;display:flex;gap:10px}
.dots button{width:36px;height:3px;background:rgba(255,255,255,.4);transition:background .3s}
.dots button.on{background:var(--accent)}

/* sections */
.intro{padding-top:clamp(72px,10vw,140px);padding-bottom:clamp(56px,8vw,100px)}
.intro>*{max-width:980px}
.intro h1{font-size:clamp(30px,4.6vw,56px);margin:14px 0 22px}
.lead{font-size:clamp(16px,1.5vw,19px);color:#444;max-width:760px}
.sec-head{display:flex;align-items:baseline;justify-content:space-between;border-top:1px solid var(--ink);padding-top:18px;margin-bottom:28px}
.sec-head h2,.sec-title{font-size:clamp(22px,2.4vw,30px)}
.sec-head a{font-size:14px;color:var(--muted)}
.sec-head a:hover{color:var(--ink)}
.sec-title{border-top:1px solid var(--ink);padding-top:18px;margin:clamp(56px,8vw,110px) 0 32px}

/* cards */
.grid{display:grid;gap:clamp(18px,2.4vw,32px);grid-template-columns:repeat(3,1fr)}
.grid.feat .card.big{grid-column:span 2;grid-row:span 2}
.card{display:block;min-width:0}
.card figure{overflow:hidden;aspect-ratio:4/3;background:var(--soft)}
.card.big figure{aspect-ratio:auto;height:calc(100% - 92px)}
.card img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease),filter .6s}
.card:hover img{transform:scale(1.05)}
.card-txt{padding:14px 0 6px}
.card h3{font-size:19px;margin:10px 0 2px}
.card p{font-size:14px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.card.hide{display:none}

.cats{display:grid;grid-template-columns:repeat(8,1fr);border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-top:clamp(56px,8vw,110px);padding:0}
.cats a{display:flex;flex-direction:column;gap:6px;padding:26px 18px;border-right:1px solid var(--line);transition:background .3s}
.cats a:last-child{border-right:0}
.cats a:hover{background:var(--accent)}
.cats span{font-size:15px}.cats b{font-weight:400;font-size:28px}

.cta{background:#141414;color:#fff;margin-top:clamp(56px,8vw,110px);padding:clamp(64px,9vw,120px) 0}
.cta h2{font-size:clamp(28px,4vw,48px)}
.cta p{color:rgba(255,255,255,.7);margin-top:10px;max-width:620px}

/* works list */
.page-head{padding:clamp(56px,8vw,110px) var(--gut) clamp(28px,4vw,48px)}
.page-head h1{font-size:clamp(34px,5vw,64px);margin-top:10px}
.page-head .lead{margin-top:18px}
.filters{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:36px}
.filters button{padding:7px 14px;border:1px solid var(--line);font-size:14px;transition:all .2s}
.filters button b{font-weight:400;color:var(--muted);margin-left:6px;font-size:12px}
.filters button:hover{border-color:var(--ink)}
.filters button.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.filters button.on b{color:var(--accent)}

/* project page */
.phero{height:calc(100svh - 64px);min-height:420px;max-height:1000px;position:relative;display:flex;align-items:flex-end;overflow:hidden;background:#111}
.phero-bg{position:absolute;inset:0}
.phero-bg img{width:100%;height:100%;object-fit:cover}
.phero::before{content:"";position:absolute;inset:0;z-index:1;background:linear-gradient(180deg,rgba(0,0,0,.18) 0,rgba(0,0,0,0) 30%,rgba(0,0,0,0) 45%,rgba(0,0,0,.66))}
.phero-txt{position:relative;z-index:2;color:#fff;padding-bottom:clamp(40px,6vw,72px);width:100%}
.phero-meta{display:flex;align-items:center;flex-wrap:wrap;gap:10px 18px;font-size:12px;letter-spacing:.2em;text-transform:uppercase}
.phero-no{font-variant-numeric:tabular-nums;opacity:.85}
.phero-alt{opacity:.7;letter-spacing:.12em}
.phero h1{font-size:clamp(40px,8.4vw,132px);line-height:1.02;letter-spacing:-.01em;margin:18px 0 12px;max-width:14em}
.lang-en .phero h1{letter-spacing:-.025em}
.phero p{font-size:clamp(15px,1.6vw,20px);opacity:.9}
.facts{display:grid;grid-template-columns:repeat(4,1fr);gap:24px;padding:36px 0;border-bottom:1px solid var(--line)}
.facts dt{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);margin-bottom:6px}
.facts dd{font-size:15px}
.prose{padding-top:40px}
.prose p{margin:0 0 1.2em;font-size:16.5px;color:#2b2b2b}
.lang-en .prose p{font-family:var(--serif);font-size:17.5px;line-height:1.75}
.ph{font-size:clamp(19px,2vw,24px);margin:2.2em 0 .8em;padding-left:14px;border-left:3px solid var(--accent)}
.pimg{margin:0 0 1.4em;background:var(--soft)}
.pimg img{width:100%}
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.gallery .pimg{margin:0}
.pn{display:grid;grid-template-columns:1fr auto 1fr;gap:20px;align-items:center;border-top:1px solid var(--ink);margin-top:clamp(56px,8vw,100px);padding-top:24px;padding-bottom:24px}
.pn a span{display:block;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--muted)}
.pn a b{font-weight:500;font-size:18px}
.pn a:last-child{text-align:right}
.pn .back{font-size:14px;border:1px solid var(--ink);padding:9px 16px}
.pn .back:hover{background:var(--ink);color:var(--paper)}

/* about */
.two{display:grid;grid-template-columns:1fr 2fr;gap:clamp(24px,5vw,80px);border-top:1px solid var(--ink);padding-top:22px;padding-bottom:clamp(40px,6vw,80px)}
.two h2{font-size:clamp(22px,2.4vw,30px)}
.two .prose{padding-top:0}
.services{list-style:none;display:grid;grid-template-columns:1fr 1fr;gap:0 32px}
.services li{padding:14px 0;border-bottom:1px solid var(--line);font-size:17px}
.services li::before{content:"";display:inline-block;width:8px;height:8px;background:var(--accent);margin-right:12px;vertical-align:middle}
.team{display:grid;grid-template-columns:1fr 1fr;gap:clamp(32px,5vw,64px) clamp(24px,4vw,56px)}
.member{display:grid;grid-template-columns:180px 1fr;gap:24px;align-items:start}
.member figure{aspect-ratio:437/625;overflow:hidden;background:var(--soft)}
.member img{width:100%;height:100%;object-fit:cover;filter:grayscale(1);transition:filter .6s}
.member:hover img{filter:none}
.member h3{font-size:22px}
.member .role{font-size:13px;letter-spacing:.12em;color:var(--muted);margin:2px 0 12px;text-transform:uppercase}
.member p{font-size:14.5px;color:#3a3a3a;margin-bottom:.6em}
.member blockquote{margin-top:12px;padding-left:12px;border-left:3px solid var(--accent);font-family:var(--serif);font-style:italic;color:#555;font-size:15px}

/* contact */
.contact{display:grid;grid-template-columns:2fr 1fr;gap:48px;align-items:start;border-top:1px solid var(--ink);padding-top:28px;padding-bottom:clamp(56px,8vw,110px)}
.contact dl div{padding:18px 0;border-bottom:1px solid var(--line);display:grid;grid-template-columns:140px 1fr;gap:16px}
.contact dt{font-size:12px;letter-spacing:.18em;text-transform:uppercase;color:var(--muted);padding-top:4px}
.contact dd{font-size:clamp(17px,2vw,22px)}
.contact dd a:hover{background:var(--accent)}
.qr{max-width:240px}
.qr figcaption{font-size:13px;color:var(--muted);margin-top:8px;text-align:center}

/* footer */
.ftr{background:var(--soft);margin-top:clamp(56px,8vw,110px);padding:56px 0 28px;font-size:14px}
main:has(>.cta:last-child)+.ftr{margin-top:0}
.ftr-grid{display:grid;grid-template-columns:1.2fr 1.5fr auto;gap:40px}
.ftr-logo{height:48px;width:auto;margin-bottom:14px}
.ftr p{margin-bottom:8px}
.ftr p .muted{display:inline-block;min-width:64px;margin-right:10px}
.ftr a:hover{text-decoration:underline}
.ftr-qr{display:flex;flex-direction:column;align-items:center;gap:6px}
.ftr-qr img{width:96px;height:96px}
.ftr-base{display:flex;justify-content:space-between;gap:16px;border-top:1px solid var(--line);margin-top:36px;padding-top:18px;color:var(--muted);font-size:12px;letter-spacing:.06em}

/* reveal on scroll */
.reveal{opacity:0;transform:translateY(24px);transition:opacity .9s var(--ease),transform .9s var(--ease)}
.reveal.in{opacity:1;transform:none}
.no-js .reveal{opacity:1;transform:none}
@media (prefers-reduced-motion:reduce){.reveal{opacity:1;transform:none;transition:none}.slide{transition:opacity .3s}}

/* responsive */
@media (max-width:1024px){
  .grid{grid-template-columns:1fr 1fr}
  .cats{grid-template-columns:repeat(4,1fr)}
  .cats a:nth-child(4n){border-right:0}
  .cats a:nth-child(-n+4){border-bottom:1px solid var(--line)}
  .team{grid-template-columns:1fr}
  .facts{grid-template-columns:1fr 1fr}
}
@media (max-width:760px){
  .burger{display:block}
  .nav{position:fixed;inset:63px 0 auto 0;flex-direction:column;align-items:flex-start;gap:0;background:var(--paper);padding:8px var(--gut) 24px;border-bottom:1px solid var(--line);transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .25s,transform .25s}
  .nav.open{opacity:1;transform:none;pointer-events:auto}
  .nav a{padding:14px 0;font-size:18px;width:100%;border-bottom:1px solid var(--line)}
  .nav a::after{display:none}
  .nav .lang{margin-top:16px;width:auto;border:1px solid var(--ink);padding:6px 14px;font-size:14px}
  .grid,.grid.feat{grid-template-columns:1fr}
  .grid.feat .card.big{grid-column:auto;grid-row:auto}
  .card.big figure{aspect-ratio:4/3;height:auto}
  .cats{grid-template-columns:1fr 1fr}
  .cats a{border-right:0;border-bottom:1px solid var(--line)}
  .cats a:nth-child(odd){border-right:1px solid var(--line)}
  .two,.contact{grid-template-columns:1fr}
  .services{grid-template-columns:1fr}
  .member{grid-template-columns:120px 1fr;gap:16px}
  .facts{grid-template-columns:1fr 1fr;gap:18px}
  .gallery{grid-template-columns:1fr}
  .pn{grid-template-columns:1fr 1fr}
  .pn .back{display:none}
  .contact dl div{grid-template-columns:1fr;gap:4px}
  .ftr-grid{grid-template-columns:1fr}
  .ftr-qr{align-items:flex-start}
  .ftr-base{flex-direction:column}
  .brand span{font-size:14px}
}

/* ───────────── motion layer (all of it is opt-in via classes set in <head>; no JS / reduced motion = static site) ───────────── */
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}

/* big type */
.page-head h1.big{font-size:clamp(56px,13vw,200px);line-height:.95;letter-spacing:-.02em;margin-top:6px}
.intro h1{line-height:1.12}
.split-line{padding-bottom:.06em;margin-bottom:-.06em} /* room for descenders inside the line mask */

/* opening loader: dark curtain, white logo, 0→100 counter, yellow progress line */
.loader{display:none}
.sld-intro .loader{display:block;position:fixed;inset:0;z-index:200;background:#111;color:#fff}
.sld-intro body{overflow:hidden}
.loader-mid{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);overflow:hidden}
.loader-mid img{height:clamp(46px,6vw,74px);width:auto;filter:brightness(0) invert(1)}
.loader-foot{position:absolute;left:var(--gut);right:var(--gut);bottom:clamp(22px,4vw,44px);display:flex;justify-content:space-between;align-items:flex-end;overflow:hidden}
.loader-n{font-size:clamp(64px,13vw,190px);line-height:.8;font-weight:300;letter-spacing:-.04em;font-variant-numeric:tabular-nums;display:block}
.loader-tag{font-size:11px;letter-spacing:.3em;color:rgba(255,255,255,.55);padding-bottom:6px}
.loader-bar{position:absolute;left:0;bottom:0;height:3px;width:100%;background:var(--accent);transform:scaleX(0);transform-origin:left}
/* safety net: if the scripts never run, the curtain lifts by itself */
.sld-intro:not(.sld-ok) .loader{animation:sld-lift .9s var(--ease) 2.6s forwards}
.sld-intro:not(.sld-ok) body{animation:sld-unlock 0s 2.6s forwards}
@keyframes sld-lift{to{transform:translateY(-100%);visibility:hidden}}
@keyframes sld-unlock{to{overflow:visible}}

/* page transition curtain */
.pt{position:fixed;inset:0;z-index:190;background:#141414;transform:translateY(100%);pointer-events:none}
.pt::after{content:"";position:absolute;left:0;right:0;top:0;height:3px;background:var(--accent)}
.sld-pt .pt{transform:none}
.sld-pt:not(.sld-ok) .pt{animation:sld-lift .8s var(--ease) 1.2s forwards}

/* split headings stay hidden until their lines are ready (or 3s, whichever first) */
.sld-m .split{visibility:hidden}
.sld-m:not(.sld-ok) .split{animation:sld-show 0s 3s forwards}
@keyframes sld-show{to{visibility:visible}}

/* hero: text rises out of masks on every slide change (pure CSS, works with or without GSAP) */
.hero-in{position:absolute;inset:0}
.slide-txt>*{display:block;overflow:hidden}
.slide-txt i{display:block;font-style:normal;transform:translateY(105%);transition:transform 1.1s var(--ease)}
.slide.on .slide-txt i{transform:none}
.slide.on .slide-txt h2 i{transition-delay:.12s}.slide.on .slide-txt p i{transition-delay:.24s}
html:not(.js) .slide-txt i{transform:none}
.sld-intro.sld-ok .slide.on .slide-txt i{transform:translateY(105%)}

/* marquee of disciplines */
.marquee{overflow:hidden;border-top:1px solid var(--line);margin-top:clamp(56px,8vw,110px);padding:clamp(18px,2.4vw,30px) 0;white-space:nowrap}
.marquee+.cats{margin-top:0;border-top:0}
.mq-track{display:inline-flex;animation:sld-mq 46s linear infinite}
.mq-set{display:inline-flex;align-items:center}
.mq-set span{font-size:clamp(44px,8.6vw,132px);line-height:1;letter-spacing:-.02em;padding:0 .3em}
.mq-set span:nth-child(4n+3){color:transparent;-webkit-text-stroke:1px var(--ink)}
.mq-set i{width:.32em;height:.32em;font-size:clamp(44px,8.6vw,132px);background:var(--accent);border-radius:50%;flex:none}
.marquee:hover .mq-track{animation-play-state:paused}
@keyframes sld-mq{to{transform:translateX(-50%)}}

/* card hover: deeper zoom, title underline */
.card h3{display:inline;background:linear-gradient(var(--accent),var(--accent)) 0 92%/0 .32em no-repeat;transition:background-size .5s var(--ease)}
.card:hover h3{background-size:100% .32em}
.card-txt .tag{display:table}
.card-txt h3+p{margin-top:4px}
.card img{transition:transform 1.2s var(--ease),filter .6s}
.card:hover img{transform:scale(1.06)}

/* "View" cursor (desktop with a real mouse only; added by JS) */
.cursor{position:fixed;left:0;top:0;z-index:120;pointer-events:none;width:0;height:0}
.cursor-in{position:absolute;left:-48px;top:-48px;width:96px;height:96px;border-radius:50%;background:var(--accent);color:#111;display:flex;align-items:center;justify-content:center;font-size:13px;letter-spacing:.14em;text-transform:uppercase;transform:scale(0);transition:transform .45s var(--ease)}
.cursor.on .cursor-in{transform:scale(1)}
.has-cursor .card,.has-cursor .slide{cursor:none}

/* header hides while reading down, returns when scrolling up */
.hdr{transition:border-color .3s,background .3s,transform .5s var(--ease)}
.hdr.away{transform:translateY(-100%)}

@media (prefers-reduced-motion:reduce){
  .mq-track{animation:none}
  .slide-txt i{transform:none;transition:none}
  .card img,.card:hover img{transition:none;transform:none}
}
@media (max-width:760px){
  .mq-set span{font-size:44px}.mq-set i{font-size:44px}
  .phero{height:78svh;min-height:420px}
  .phero h1{font-size:clamp(36px,11vw,56px)}
  .loader-n{font-size:76px}
}