/* James Chan — tech / streetwear portfolio. System fonts only, no external requests. */
:root{
  --dk-bg:#0a0a0a;--dk-fg:#f5f5f5;--dk-mute:#a6a6a6;--dk-line:rgba(255,255,255,.18);--dk-accent:#ff3b57;--dk-nav:rgba(10,10,10,.72);--dk-fill:#161616;
  --lt-bg:#ffffff;--lt-fg:#0a0a0a;--lt-mute:#595959;--lt-line:rgba(10,10,10,.2);--lt-accent:#e31937;--lt-nav:rgba(255,255,255,.74);--lt-fill:#f2f2f2;
  --sans:-apple-system,BlinkMacSystemFont,"PingFang SC","Helvetica Neue","Noto Sans SC","Microsoft YaHei",Arial,sans-serif;
  --mono:ui-monospace,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;
  --ease:cubic-bezier(.2,.7,.2,1);
  --pad:clamp(20px,4vw,56px);
  --nav-h:56px;
  color-scheme:dark light;
}
/* default = dark; .s-a is the "base" surface, .s-b the inverted one */
body,.s-a{--bg:var(--dk-bg);--fg:var(--dk-fg);--mute:var(--dk-mute);--line:var(--dk-line);--accent:var(--dk-accent);--nav:var(--dk-nav);--fill:var(--dk-fill)}
.s-b{--bg:var(--lt-bg);--fg:var(--lt-fg);--mute:var(--lt-mute);--line:var(--lt-line);--accent:var(--lt-accent);--fill:var(--lt-fill)}
@media (prefers-color-scheme:light){
  body,.s-a{--bg:var(--lt-bg);--fg:var(--lt-fg);--mute:var(--lt-mute);--line:var(--lt-line);--accent:var(--lt-accent);--nav:var(--lt-nav);--fill:var(--lt-fill)}
  .s-b{--bg:var(--dk-bg);--fg:var(--dk-fg);--mute:var(--dk-mute);--line:var(--dk-line);--accent:var(--dk-accent);--fill:var(--dk-fill)}
}
*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--fg);font-family:var(--sans);line-height:1.6;overflow-x:clip;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
.s-a,.s-b{background:var(--bg);color:var(--fg)}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
[hidden]{display:none!important}
::selection{background:#e31937;color:#fff}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.mono{font-family:var(--mono);font-size:12px;letter-spacing:.14em;text-transform:uppercase;font-weight:400}
.skip{position:absolute;left:-999px;top:0;background:#fff;color:#000;padding:8px 12px;z-index:100}
.skip:focus{left:8px;top:8px}

/* nav */
.nav{position:fixed;top:0;left:0;right:0;height:var(--nav-h);z-index:50;display:flex;align-items:center;justify-content:space-between;padding:0 var(--pad);background:var(--nav);-webkit-backdrop-filter:saturate(180%) blur(18px);backdrop-filter:saturate(180%) blur(18px);border-bottom:1px solid var(--line);color:var(--fg)}
.nav .brand{font-weight:700;letter-spacing:-.02em;font-size:15px;display:flex;align-items:center;gap:10px}
.nav .brand i{width:10px;height:10px;background:var(--accent);display:inline-block}
.nav ul{display:flex;gap:clamp(16px,3vw,36px);list-style:none;margin:0;padding:0}
.nav ul a{padding:8px 0;border-bottom:1px solid transparent;transition:border-color .3s var(--ease)}
.nav ul a:hover,.nav ul a[aria-current]{border-color:var(--fg)}
#progress{position:fixed;top:0;left:0;height:2px;width:100%;background:var(--dk-accent);transform:scaleX(0);transform-origin:0 50%;z-index:60;pointer-events:none}

/* hero */
.hero{position:relative;min-height:100vh;min-height:100svh;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--nav-h) + 40px) var(--pad) 28px;overflow:hidden;isolation:isolate}
.hero-bg{position:absolute;inset:0;z-index:-1;pointer-events:none}
.hero-bg .grid{position:absolute;inset:-64px;background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;-webkit-mask-image:radial-gradient(ellipse 80% 70% at 70% 40%,#000 10%,transparent 75%);mask-image:radial-gradient(ellipse 80% 70% at 70% 40%,#000 10%,transparent 75%);animation:drift 24s linear infinite}
.hero-bg .scan{position:absolute;inset:0;background:repeating-linear-gradient(0deg,var(--line) 0 1px,transparent 1px 5px);opacity:.28}
.hero-bg .scan::after{content:"";position:absolute;left:0;right:0;top:0;height:28%;background:linear-gradient(180deg,transparent,var(--line),transparent);animation:sweep 8s linear infinite}
.hero-bg svg{position:absolute;right:-12vw;top:50%;width:min(86vw,980px);height:auto;aspect-ratio:1;margin-top:calc(min(86vw,980px) / -2);color:var(--fg)}
.hero-bg svg .spin{transform-origin:500px 500px;animation:spin 120s linear infinite}
.hero-bg svg .spin2{transform-origin:500px 500px;animation:spin 70s linear infinite reverse}
@keyframes drift{to{transform:translate(64px,64px)}}
@keyframes sweep{from{transform:translateY(-100%)}to{transform:translateY(420%)}}
@keyframes spin{to{transform:rotate(360deg)}}
.hero .label{display:flex;align-items:center;gap:12px;color:var(--mute);margin:0 0 clamp(12px,2vw,24px)}
.hero .label .dot{width:8px;height:8px;background:var(--accent);animation:blink 1.6s steps(2,end) infinite}
@keyframes blink{50%{opacity:.2}}
.wordmark{margin:0;font-weight:700;font-size:clamp(3rem,12.4vw,15rem);line-height:.86;letter-spacing:-.06em;text-transform:uppercase;white-space:nowrap}
.tagline{margin:clamp(18px,3vw,36px) 0 0;font-size:clamp(1.05rem,1.8vw,1.5rem);font-weight:500;letter-spacing:.02em;max-width:34em}
.tagline span{color:var(--mute)}
.hero-foot{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:clamp(28px,6vh,72px);padding-top:16px;color:var(--mute)}
.hero-foot a{color:var(--fg)}
.hero-foot a:hover{color:var(--accent)}

/* sections */
.sec{padding:clamp(72px,12vh,140px) var(--pad);min-height:100vh;min-height:100svh}
.sec-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap;margin-bottom:clamp(28px,5vw,56px)}
.sec-head .mono{color:var(--mute);margin:0 0 14px}
.h-xl{margin:0;font-size:clamp(2.6rem,8.4vw,9rem);line-height:.98;letter-spacing:-.045em;font-weight:700}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 clamp(24px,4vw,44px);padding:0;list-style:none}
.chip{appearance:none;background:transparent;color:var(--fg);border:1px solid var(--line);border-radius:0;padding:9px 14px;font:inherit;cursor:pointer;display:inline-flex;gap:8px;align-items:baseline;transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease)}
.chip .mono{font-size:10px;color:var(--mute)}
.chip sup{font-family:var(--mono);font-size:10px;color:var(--mute)}
.chip:hover{border-color:var(--fg)}
.chip[aria-pressed="true"]{background:var(--fg);color:var(--bg);border-color:var(--fg)}
.chip[aria-pressed="true"] .mono,.chip[aria-pressed="true"] sup{color:var(--bg)}
.chip{font-size:14px}

/* works grid (12 cols) */
.grid-works{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));gap:clamp(36px,5vw,64px) clamp(16px,2vw,28px)}
.card{display:block;grid-column:span 12;color:var(--fg)}
.card.s6{grid-column:span 6}.card.s4{grid-column:span 4}
.card .media{position:relative;overflow:hidden;background:#000;aspect-ratio:16/10}
.card.s12 .media{aspect-ratio:21/9}.card.s4 .media{aspect-ratio:4/3}
.card .media img{width:100%;height:100%;object-fit:cover;transition:transform .9s var(--ease)}
.card .media::after{content:"";position:absolute;inset:0;background:#000;opacity:0;transition:opacity .5s var(--ease)}
.card .arrow{position:absolute;right:0;bottom:0;z-index:2;width:56px;height:56px;background:#e31937;color:#fff;display:flex;align-items:center;justify-content:center;font-size:24px;line-height:1;opacity:0;transform:translateX(-14px);transition:opacity .35s var(--ease),transform .5s var(--ease)}
.card .info{border-top:1px solid var(--line);margin-top:14px;padding-top:14px}
.card .meta{display:flex;flex-wrap:wrap;gap:6px 18px;color:var(--mute);margin-bottom:12px}
.card .meta b{color:var(--fg);font-weight:400}
.card h3{margin:0 0 8px;font-size:clamp(1.3rem,2.4vw,2.2rem);line-height:1.15;letter-spacing:-.03em;font-weight:650;transition:color .3s var(--ease)}
.card.s12 h3{font-size:clamp(1.8rem,4.4vw,4rem);letter-spacing:-.04em}
.card p{margin:0;color:var(--mute);max-width:42em;font-size:15px}
.badge{display:inline-block;border:1px solid currentColor;padding:1px 6px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--fg)}
@media (hover:hover){
  .card:hover .media img{transform:scale(1.06)}
  .card:hover .media::after{opacity:.38}
  .card:hover .arrow{opacity:1;transform:none}
  .card:hover h3{color:var(--accent)}
}
@media (hover:none){.card .arrow{opacity:1;transform:none;width:44px;height:44px}}
.empty{color:var(--mute);padding:40px 0}

/* empty state (zero works) */
.soon{position:relative;display:flex;flex-direction:column;justify-content:flex-end;gap:0;min-height:min(64vh,640px);padding:clamp(28px,5vw,64px);border:1px solid var(--line);background-image:linear-gradient(var(--line) 1px,transparent 1px),linear-gradient(90deg,var(--line) 1px,transparent 1px);background-size:64px 64px;background-position:-1px -1px;overflow:hidden}
.soon.compact{min-height:min(48vh,460px)}
.soon-frame{position:absolute;inset:14px;pointer-events:none}
.soon-frame .c{position:absolute;width:18px;height:18px;border:0 solid var(--fg)}
.soon-frame .tl{left:0;top:0;border-width:2px 0 0 2px}.soon-frame .tr{right:0;top:0;border-width:2px 2px 0 0}
.soon-frame .bl{left:0;bottom:0;border-width:0 0 2px 2px}.soon-frame .br{right:0;bottom:0;border-width:0 2px 2px 0}
.soon-tag{display:flex;align-items:center;gap:12px;color:var(--mute);margin:0 0 clamp(14px,2vw,24px);background:var(--bg);align-self:flex-start;padding:4px 10px 4px 0}
.soon-tag .dot{width:8px;height:8px;background:var(--accent);animation:blink 1.6s steps(2,end) infinite}
.soon-t{margin:0;font-weight:700;font-size:clamp(3rem,11vw,10rem);line-height:.9;letter-spacing:-.05em;background:var(--bg);align-self:flex-start;padding-right:.15em}
.soon-en{margin:clamp(10px,1.6vw,20px) 0 0;color:var(--accent);letter-spacing:.32em;font-size:clamp(12px,1.6vw,18px);background:var(--bg);align-self:flex-start;padding:2px 10px 2px 0}
.soon-d{margin:clamp(14px,2vw,24px) 0 0;color:var(--mute);background:var(--bg);align-self:flex-start;padding-right:10px}
@media (prefers-reduced-motion:reduce){.soon-tag .dot{animation:none}}

/* manifesto / categories */
.mani{display:grid;grid-template-columns:1.2fr 1fr;gap:clamp(32px,6vw,96px);align-items:end;min-height:80vh}
.mani .h-xl{font-size:clamp(2.6rem,7.6vw,8.4rem)}
.catlist{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.catlist a{display:grid;grid-template-columns:44px 1fr auto 28px;gap:12px;align-items:baseline;padding:18px 0;border-bottom:1px solid var(--line);transition:padding .4s var(--ease),color .3s}
.catlist .zh{font-size:clamp(1.2rem,2vw,1.7rem);letter-spacing:-.02em;font-weight:600}
.catlist .mono{color:var(--mute)}
.catlist .go{color:var(--fg);transition:transform .4s var(--ease),color .3s}
.catlist a:hover{padding-left:12px}
.catlist a:hover .go{color:var(--accent);transform:translateX(6px)}

/* footer */
.foot{padding:28px var(--pad) 36px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;color:var(--mute)}
.foot a:hover{color:var(--fg)}
.foot nav{display:flex;gap:22px;flex-wrap:wrap}

/* post header */
.phead{background:#0a0a0a;color:#f5f5f5;position:relative;min-height:92vh;min-height:92svh;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--nav-h) + 40px) var(--pad) 32px;overflow:hidden;isolation:isolate}
.phead .bgimg{position:absolute;inset:0;z-index:-2}
.phead .bgimg img{width:100%;height:100%;object-fit:cover}
.phead::before{content:"";position:absolute;inset:0;z-index:-1;background:linear-gradient(180deg,rgba(10,10,10,.7) 0%,rgba(10,10,10,.66) 50%,#0a0a0a 100%)}
.phead,.phead *{--fg:#f5f5f5;--mute:#b4b4b4;--line:rgba(255,255,255,.22)}
.phead .meta{display:flex;flex-wrap:wrap;gap:8px 22px;margin-bottom:clamp(16px,3vw,32px);color:var(--mute)}
.phead .meta b{color:var(--fg);font-weight:400}
.ptitle{margin:0;font-size:clamp(2.4rem,8.6vw,9.5rem);line-height:1;letter-spacing:-.045em;font-weight:700;text-wrap:balance;max-width:16ch}
.psum{margin:clamp(18px,3vw,32px) 0 0;max-width:36em;font-size:clamp(1.05rem,1.7vw,1.4rem);color:#d8d8d8;font-weight:450}
.phead .hero-foot{margin-top:clamp(28px,6vh,64px)}
.article{padding:clamp(56px,10vh,120px) var(--pad) clamp(72px,12vh,140px)}
.prose{max-width:680px;margin:0 auto;font-size:clamp(17px,.5vw + 15px,20px);line-height:1.95}
.prose>*:first-child{margin-top:0}
.prose p{margin:1.5em 0}
.prose h2,.prose h3,.prose h4,.prose h5{line-height:1.2;letter-spacing:-.035em;font-weight:700;margin:2.4em 0 .8em}
.prose h2{font-size:clamp(1.7rem,3.4vw,2.6rem)}
.prose h2::before{content:"";display:block;width:28px;height:4px;background:var(--accent);margin-bottom:18px}
.prose h3{font-size:clamp(1.35rem,2.4vw,1.8rem)}
.prose h4,.prose h5{font-size:1.1rem}
.prose a{text-decoration:underline;text-decoration-thickness:1px;text-underline-offset:4px;transition:color .25s}
.prose a:hover{color:var(--accent)}
.prose blockquote{margin:2.2em 0;padding:0 0 0 22px;border-left:2px solid var(--fg);font-size:1.18em;font-weight:550;line-height:1.7;letter-spacing:-.01em}
.prose blockquote p{margin:.6em 0}
.prose ul,.prose ol{margin:1.5em 0;padding:0;list-style:none;counter-reset:li}
.prose li{position:relative;padding-left:2.4em;margin:.5em 0;counter-increment:li}
.prose ul li::before{content:"—";position:absolute;left:0;font-family:var(--mono);color:var(--mute)}
.prose ol li::before{content:counter(li,decimal-leading-zero);position:absolute;left:0;top:.35em;font-family:var(--mono);font-size:.7em;letter-spacing:.1em;color:var(--mute)}
.prose hr{border:0;border-top:1px solid var(--line);margin:3em 0}
.prose code{font-family:var(--mono);font-size:.88em;background:var(--fill);padding:.1em .4em}
.prose pre{background:var(--fill);padding:18px;overflow:auto;font-size:.85em;line-height:1.6}
.prose pre code{background:none;padding:0}
.prose figure{margin:2.4em 0}
.prose figure img{width:100%;height:auto}
.prose figure.wide{width:min(1100px,100vw - 2*var(--pad));margin-left:50%;transform:translateX(-50%)}
.prose figure.full{width:100vw;margin-left:50%;transform:translateX(-50%)}
.prose figcaption{margin-top:12px;color:var(--mute);font-family:var(--mono);font-size:12px;letter-spacing:.1em;padding:0 var(--pad)}
.prose figure:not(.wide):not(.full) figcaption{padding:0}
.sample-note{max-width:680px;margin:0 auto 2.4em;border:1px solid var(--line);padding:14px 16px;display:flex;gap:14px;align-items:baseline;color:var(--mute);font-size:14px;line-height:1.6}
.sample-note .badge{flex:none}
.pn{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--line)}
.pn a{padding:clamp(32px,6vw,72px) var(--pad);display:block;transition:background .4s var(--ease)}
.pn a+a{border-left:1px solid var(--line);text-align:right}
.pn .mono{color:var(--mute);display:block;margin-bottom:14px}
.pn strong{display:block;font-size:clamp(1.3rem,3vw,2.6rem);line-height:1.15;letter-spacing:-.035em;font-weight:650}
.pn a:hover{background:var(--fill)}
.pn a:hover strong{color:var(--accent)}

/* archive */
.page-head{min-height:62vh;min-height:62svh;display:flex;flex-direction:column;justify-content:flex-end;padding:calc(var(--nav-h) + 40px) var(--pad) 40px;position:relative;overflow:hidden;isolation:isolate}
.page-head .mono{color:var(--mute);margin:0 0 16px}
.page-head .h-xl{font-size:clamp(3rem,13vw,14rem);letter-spacing:-.06em}
.year{margin:48px 0 0;color:var(--mute)}
.rows{list-style:none;margin:12px 0 0;padding:0;border-top:1px solid var(--line)}
.row{display:grid;grid-template-columns:90px 1fr 120px 120px 36px;gap:16px;align-items:baseline;padding:22px 0;border-bottom:1px solid var(--line);transition:padding .45s var(--ease),background .3s}
.row .t{font-size:clamp(1.15rem,2.2vw,1.8rem);letter-spacing:-.03em;font-weight:600}
.row .mono{color:var(--mute)}
.row .go{justify-self:end;transition:transform .4s var(--ease),color .3s}
.row:hover{padding-left:14px;background:var(--fill)}
.row:hover .go{color:var(--accent);transform:translateX(6px)}
.about .prose{max-width:720px}
.nf{min-height:100vh;display:flex;flex-direction:column;justify-content:center;padding:var(--nav-h) var(--pad) 0}
.nf .h-xl{font-size:clamp(6rem,30vw,28rem);letter-spacing:-.07em;line-height:.85}
.nf a.btn{display:inline-block;margin-top:28px;border:1px solid var(--fg);padding:12px 18px;transition:background .3s,color .3s}
.nf a.btn:hover{background:var(--fg);color:var(--bg)}

@media (max-width:980px){.mani{grid-template-columns:1fr;min-height:0;align-items:start}}
@media (max-width:760px){
  .grid-works .card,.grid-works .card.s6,.grid-works .card.s4{grid-column:1/-1}
  .card .media,.card.s12 .media,.card.s4 .media{aspect-ratio:16/10}
  .row{grid-template-columns:48px 1fr 28px;row-gap:6px}
  .row .c,.row .d{grid-column:2;display:inline}
  .row .go{grid-column:3;grid-row:1}
  .pn{grid-template-columns:1fr}
  .pn a+a{border-left:0;border-top:1px solid var(--line);text-align:left}
  .hero-bg svg{right:-40vw}
  .sec{min-height:0}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation:none!important;transition-duration:.01ms!important}
  .card:hover .media img{transform:none}
}