*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scrollbar-width:thin;scrollbar-color:#2a2722 var(--bg)}
html.lenis,html.lenis body{height:auto}
.lenis.lenis-smooth{scroll-behavior:auto!important}
.lenis.lenis-stopped{overflow:hidden}
body{margin:0;background:transparent;color:var(--ink);font-family:var(--f-ui);font-size:var(--fs-body);line-height:1.7;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility;overflow-x:clip;font-feature-settings:"ss01" 0}
img,svg,video{display:block;max-width:100%}
h1,h2,h3,h4,p,figure,ul,ol,dl,dd{margin:0;padding:0}
ul,ol{list-style:none}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit;background:none;border:0;padding:0;cursor:pointer}
::selection{background:var(--accent);color:#1a1100}
code,pre,kbd,samp{font-family:var(--f-mono);font-variant-ligatures:none;font-feature-settings:"liga" 0,"calt" 0}

:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:4px}
.skip{position:fixed;left:16px;top:-60px;z-index:200;background:var(--ink);color:#111;padding:10px 16px;border-radius:8px;font-size:14px;transition:top .2s}
.skip:focus{top:12px}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* grain — very faint, static (no per-frame cost) */
.grain{position:fixed;inset:-50%;z-index:90;pointer-events:none;opacity:.05;mix-blend-mode:overlay;
  background-image:url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='.9' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 1  0 0 0 0 1  0 0 0 0 1  0 0 0 .9 0'/></filter><rect width='100%' height='100%' filter='url(%23n)'/></svg>")}

/* progress */
.progress{position:fixed;left:0;top:0;height:2px;width:100%;z-index:120;transform-origin:0 50%;transform:scaleX(0);background:var(--accent);opacity:.9}

/* ---------- nav ---------- */
.nav{position:fixed;inset:0 0 auto 0;z-index:100;height:var(--nav-h);display:flex;align-items:center;justify-content:space-between;
  padding:0 var(--gutter);transition:transform .6s var(--ease-out),background .4s,border-color .4s;border-bottom:1px solid transparent}
.nav.is-solid{background:rgba(11,10,9,.62);-webkit-backdrop-filter:blur(14px) saturate(1.1);backdrop-filter:blur(14px) saturate(1.1);border-color:var(--line)}
.nav.is-hidden{transform:translateY(-100%)}
.wordmark{font-family:var(--f-ui);font-weight:600;font-size:15px;letter-spacing:-.01em;display:flex;align-items:baseline;gap:7px}
.wordmark i{font-family:var(--f-serif);font-style:italic;font-weight:400;font-size:19px;color:var(--accent);letter-spacing:0}
.nav ul{display:flex;gap:clamp(18px,2.6vw,40px);font-size:13px;color:var(--ink-2)}
.nav-r{display:flex;align-items:center;gap:20px;font-size:13px}
.ulink{position:relative;display:inline-block;padding-block:2px}
.ulink::after{content:"";position:absolute;left:0;right:0;bottom:-1px;height:1px;background:currentColor;transform:scaleX(0);transform-origin:right;transition:transform .5s var(--ease-out)}
.ulink:hover::after,.ulink:focus-visible::after{transform:scaleX(1);transform-origin:left}
.nav a:hover{color:var(--ink)}
.nav ul a.is-on{color:var(--ink)}
.pill{display:inline-flex;align-items:center;gap:8px;height:34px;padding:0 16px;border:1px solid var(--line-2);border-radius:99px;font-size:13px;color:var(--ink);
  transition:background .3s,border-color .3s,color .3s}
.pill:hover{background:var(--ink);color:#111;border-color:var(--ink)}

/* ---------- section scaffolding ---------- */
.wrap{width:100%;max-width:var(--maxw);margin-inline:auto;padding-inline:var(--gutter)}
.grid{display:grid;grid-template-columns:repeat(12,minmax(0,1fr));column-gap:var(--gap)}
section{position:relative}
.sec{padding-block:var(--sec)}
.eyebrow{display:flex;align-items:center;gap:14px;font-family:var(--f-mono);font-size:var(--fs-micro);letter-spacing:.12em;text-transform:uppercase;color:var(--ink-3)}
.eyebrow b{font-weight:500;color:var(--acc-t)}
.eyebrow .rule{flex:0 0 clamp(36px,6vw,96px);height:1px;background:var(--line-2);transform-origin:left}
.h2{font-size:var(--fs-h2);font-weight:500;letter-spacing:-.035em;line-height:1.02;margin-top:28px}
.h2 em,.mega em,.cta-h em,.claim-h em,.pillars-h em{font-family:var(--f-serif);font-style:italic;font-weight:400;letter-spacing:-.01em;color:var(--acc-t)}
:lang(zh) .h2{letter-spacing:-.05em;line-height:1.12;font-weight:500}
.lede{max-width:34em;color:var(--ink-2);margin-top:28px}
.tag{font-family:var(--f-mono);font-size:var(--fs-micro);letter-spacing:.08em;text-transform:uppercase;color:var(--ink-3);border:1px solid var(--line);border-radius:99px;padding:3px 10px;display:inline-block;line-height:1.5}
.tag.accent{color:var(--acc-t);border-color:var(--accent-line)}

/* line reveal (own split) */
.ln{display:block;overflow:hidden;padding-bottom:.12em;margin-bottom:-.12em}
.ln>span{display:block;will-change:auto}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:12px;height:52px;padding:0 26px;border-radius:99px;background:var(--ink);color:var(--on-ink);font-weight:500;font-size:15px;
  transition:background .3s,color .3s,transform .5s var(--ease-out)}
.btn:hover{background:var(--accent)}
.btn.ghost{background:transparent;color:var(--ink);border:1px solid var(--line-2)}
.btn.ghost:hover{border-color:var(--ink)}

/* footer */
.foot{border-top:1px solid var(--line);padding-top:clamp(48px,8vh,96px);overflow:hidden}
.foot-row{display:flex;justify-content:space-between;gap:24px;flex-wrap:wrap;font-size:13px;color:var(--ink-3);padding-bottom:40px}
.foot-row a:hover{color:var(--ink)}
.foot-big{font-size:27vw;font-weight:600;letter-spacing:-.07em;line-height:.8;white-space:nowrap;color:transparent;
  -webkit-text-stroke:1px rgba(244,241,234,.2);margin-left:-.02em;padding-bottom:.06em;user-select:none}
.foot-big i{font-family:var(--f-serif);font-weight:400;letter-spacing:-.03em}

/* reveal initial states (JS adds .js to <html>) */
.js [data-reveal]{opacity:0}
@media (prefers-reduced-motion:reduce){
  *{scroll-behavior:auto!important}
  .js [data-reveal]{opacity:1}
}
@media (max-width:760px){
  .nav ul{display:none}
  .nav-r .hide-s{display:none}
  .btn{height:48px;padding:0 22px}
}