/* ============================================================
   CHAR MO — Reset + primitives
   ============================================================ */
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:5.5rem}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{
  margin:0;background:var(--bg);color:var(--fg);
  font-family:var(--f-body);font-size:var(--t-base);line-height:1.65;
  font-feature-settings:"kern","liga","calt";
  -webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;
  overflow-x:hidden;
}
img,svg,video,canvas{display:block;max-width:100%;height:auto}
button,input,select,textarea{font:inherit;color:inherit}
button{background:none;border:0;padding:0;cursor:pointer}
a{color:inherit;text-decoration:none}
h1,h2,h3,h4,h5,h6,p,figure,blockquote,dl,dd{margin:0}
ul,ol{margin:0;padding:0;list-style:none}
hr{border:0;border-top:1px solid var(--rule);margin:0}
::selection{background:var(--ember);color:#fff}
:focus-visible{outline:2px solid var(--ember);outline-offset:3px;border-radius:2px}

/* ---------- Layout primitives ---------- */
.wrap{width:100%;max-width:var(--wrap);margin-inline:auto;padding-inline:var(--gutter)}
.wrap--narrow{max-width:var(--wrap-narrow)}
.wrap--flush{padding-inline:0}
.section{padding-block:var(--s-sect);position:relative}
.section--tight{padding-block:clamp(2.5rem,2rem + 3vw,5rem)}
.grid{display:grid;gap:var(--col-gap)}
.g12{grid-template-columns:repeat(12,minmax(0,1fr))}
.stack>*+*{margin-top:var(--s-4)}
.flow>*+*{margin-top:1.1em}
.cluster{display:flex;flex-wrap:wrap;gap:var(--s-3);align-items:center}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap;border:0}
.skip-link{position:absolute;left:var(--s-4);top:-4rem;z-index:999;background:var(--ember);color:#fff;padding:.7rem 1.1rem;font:600 var(--t-sm)/1 var(--f-body);transition:top var(--dur-1)}
.skip-link:focus{top:var(--s-4)}

/* ---------- Type primitives ---------- */
.display{
  font-family:var(--f-display);font-weight:800;
  line-height:.92;letter-spacing:-.035em;text-wrap:balance;
  font-stretch:110%;
}
.display--xl{font-size:var(--t-5xl)}
.display--lg{font-size:var(--t-4xl)}
.display--md{font-size:var(--t-3xl)}
.display--sm{font-size:var(--t-2xl);line-height:1.02;letter-spacing:-.025em}
:lang(zh-Hant) .display,:lang(zh-Hans) .display{letter-spacing:-.005em;line-height:1.14;font-stretch:100%;font-weight:700}
/* CJK glyphs carry far more ink per em — step the display scale down so a
   headline occupies the same optical weight as its Latin counterpart. */
:lang(zh-Hant) .display--xl,:lang(zh-Hans) .display--xl{font-size:clamp(2.75rem,1.4rem + 5.6vw,6.5rem)}
:lang(zh-Hant) .display--lg,:lang(zh-Hans) .display--lg{font-size:clamp(2.15rem,1.4rem + 3.1vw,4.25rem)}
:lang(zh-Hant) .display--md,:lang(zh-Hans) .display--md{font-size:clamp(1.75rem,1.35rem + 1.7vw,2.85rem)}
:lang(zh-Hant) .display--sm,:lang(zh-Hans) .display--sm{font-size:clamp(1.35rem,1.15rem + .9vw,1.95rem);line-height:1.2}
:lang(zh-Hant) .lede,:lang(zh-Hans) .lede{max-width:34em;line-height:1.85}
:lang(zh-Hant) .body-lg,:lang(zh-Hans) .body-lg{line-height:1.9}

.lede{font-size:var(--t-lg);line-height:1.6;color:var(--fg-mute);max-width:52ch;text-wrap:pretty}
.body-lg{font-size:var(--t-lg);line-height:1.7}
.muted{color:var(--fg-mute)}
.faint{color:var(--fg-faint)}

/* Technical annotation — the signature detail */
.tag{
  display:inline-flex;align-items:center;gap:.55em;
  font-family:var(--f-mono);font-size:var(--t-2xs);font-weight:500;
  letter-spacing:.16em;text-transform:uppercase;color:var(--fg-faint);
  line-height:1;white-space:nowrap;
}
.tag::before{
  content:"";width:1.6em;height:1px;background:var(--accent);flex:none;
}
.tag--plain::before{display:none}
.tag--accent{color:var(--accent)}

.eyebrow{
  font-family:var(--f-mono);font-size:var(--t-xs);letter-spacing:.2em;
  text-transform:uppercase;color:var(--fg-faint);
}

/* Ruled section head */
.head{display:grid;gap:var(--s-4);padding-top:var(--s-4);border-top:1px solid var(--rule-strong);position:relative}
.head::before{content:"";position:absolute;top:-1px;left:0;width:3.5rem;height:3px;background:var(--accent)}
@media (min-width:60rem){
  .head--split{grid-template-columns:minmax(0,1fr) minmax(0,26rem);gap:var(--s-7);align-items:end}
}

/* ---------- Buttons ---------- */
.btn{
  --bg-b:var(--ink);--fg-b:#fff;
  position:relative;display:inline-flex;align-items:center;gap:.75em;
  padding:1.05em 1.7em;background:var(--bg-b);color:var(--fg-b);
  font-family:var(--f-body);font-size:var(--t-sm);font-weight:600;
  letter-spacing:.06em;text-transform:uppercase;line-height:1;
  border:1px solid var(--bg-b);overflow:hidden;isolation:isolate;
  transition:color var(--dur-2) var(--e-out),border-color var(--dur-2) var(--e-out);
}
.btn::after{
  content:"";position:absolute;inset:0;z-index:-1;background:var(--accent);
  transform:scaleY(0);transform-origin:bottom;
  transition:transform var(--dur-2) var(--e-out);
}
.btn:hover::after,.btn:focus-visible::after{transform:scaleY(1)}
.btn:hover,.btn:focus-visible{border-color:var(--accent);color:#fff}
.btn .ico{transition:transform var(--dur-2) var(--e-out)}
.btn:hover .ico{transform:translateX(.3em)}
.btn--ghost{--bg-b:transparent;--fg-b:var(--fg);border-color:var(--rule-strong)}
.btn--accent{--bg-b:var(--accent);--fg-b:#fff;border-color:var(--accent)}
.btn--accent::after{background:var(--ink)}
.btn--lg{padding:1.25em 2.2em;font-size:var(--t-base)}
.btn--block{display:flex;width:100%;justify-content:center}

/* Text link with a mechanical underline */
.link{
  display:inline-flex;align-items:center;gap:.5em;font-weight:600;
  background-image:linear-gradient(var(--accent),var(--accent));
  background-size:0% 1.5px;background-repeat:no-repeat;background-position:0 100%;
  transition:background-size var(--dur-2) var(--e-out),color var(--dur-1);
  padding-bottom:.12em;
}
.link:hover{background-size:100% 1.5px;color:var(--accent)}

/* ---------- Rules / dividers ---------- */
.rule{height:1px;background:var(--rule);border:0}
.rule--tick{position:relative}
.rule--tick::before{content:"";position:absolute;left:0;top:0;width:3.5rem;height:3px;margin-top:-1px;background:var(--accent)}

/* ---------- Media ---------- */
.media{position:relative;overflow:hidden;background:var(--graphite)}
.media>img,.media>video{width:100%;height:100%;object-fit:cover}
.ar-16-9{aspect-ratio:16/9}
.ar-4-3{aspect-ratio:4/3}
.ar-1-1{aspect-ratio:1/1}
.ar-3-4{aspect-ratio:3/4}
.ar-21-9{aspect-ratio:21/9}

/* ---------- Reveal on scroll ---------- */
[data-reveal]{opacity:0;transform:translateY(1.6rem);
  transition:opacity var(--dur-3) var(--e-out),transform var(--dur-3) var(--e-out);
  transition-delay:var(--rd,0ms);will-change:opacity,transform}
[data-reveal].in{opacity:1;transform:none}
[data-reveal="fade"]{transform:none}
/* clip wipe — applied to CHILDREN, never the observed node itself:
   Chromium excludes an element's own clip-path from its IntersectionObserver
   rect, so a self-clipped node would never report as intersecting. */
[data-reveal="clip"]{opacity:1;transform:none}
[data-reveal="clip"]>*{clip-path:inset(0 100% 0 0);
  transition:clip-path var(--dur-4) var(--e-out);transition-delay:var(--rd,0ms)}
[data-reveal="clip"]>*+*{transition-delay:calc(var(--rd,0ms) + 200ms)}
[data-reveal="clip"].in>*{clip-path:inset(0 0 0 0)}
@media (prefers-reduced-motion:reduce){
  [data-reveal],[data-reveal]>*{opacity:1!important;transform:none!important;clip-path:none!important;transition:none!important}
}