/* ============================================================
   LAI KA Research Projects
   Shared stylesheet — clinical black & white academic system
   ============================================================ */

/* ---- Tokens --------------------------------------------- */
:root{
  --paper:#ffffff;
  --paper-2:#fafafb;
  --wash:#f4f4f5;
  --ink:#0b0b0c;
  --ink-2:#26272b;
  --ink-soft:#6a6c72;
  --ink-faint:#9a9ca2;
  --line:#e4e4e7;
  --line-2:#d3d3d7;
  --line-strong:#0b0b0c;
  --halo:rgba(11,11,12,.10);

  --serif:"Spectral",Georgia,"Times New Roman",serif;
  --sans:"IBM Plex Sans",system-ui,-apple-system,Segoe UI,Roboto,sans-serif;
  --mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,monospace;

  --maxw:1180px;
  --pad:clamp(20px,5vw,64px);
  --ease:cubic-bezier(.22,.61,.36,1);
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:var(--sans);
  color:var(--ink);
  background:var(--paper);
  line-height:1.6;
  font-size:16px;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
::selection{background:var(--ink);color:var(--paper)}

/* page-load + page-leave transition */
body{opacity:0;animation:pageIn .7s var(--ease) forwards}
body.leaving{opacity:0;transition:opacity .35s var(--ease)}
@keyframes pageIn{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

/* ---- Type utilities ------------------------------------- */
.eyebrow{
  font-family:var(--mono);
  font-size:11px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:var(--ink-soft);
  display:inline-block;
}
.mono{font-family:var(--mono)}
h1,h2,h3{font-family:var(--serif);font-weight:400;line-height:1.08;letter-spacing:-.01em}

/* ============================================================
   HEADER
   ============================================================ */
.site-header{
  position:sticky;top:0;z-index:90;
  background:rgba(255,255,255,.9);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line-strong);
}
.nav{
  max-width:var(--maxw);margin:0 auto;
  padding:14px var(--pad);
  display:flex;align-items:center;justify-content:space-between;gap:24px;
}
.brand{display:flex;align-items:center;gap:11px}
.brand .mark{width:30px;height:30px}
.brand .mark *{transition:stroke .3s var(--ease)}
.brand .wordmark{
  font-family:var(--mono);font-weight:500;font-size:14px;
  letter-spacing:.16em;line-height:1;
}
.brand .wordmark small{
  display:block;font-size:9px;letter-spacing:.26em;
  color:var(--ink-soft);margin-top:3px;font-weight:400;
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  position:relative;font-size:13.5px;letter-spacing:.02em;
  padding:8px 14px;color:var(--ink-2);
}
.nav-links a::after{
  content:"";position:absolute;left:14px;right:14px;bottom:4px;height:1px;
  background:var(--ink);transform:scaleX(0);transform-origin:left;
  transition:transform .3s var(--ease);
}
.nav-links a:hover::after,.nav-links a:focus-visible::after{transform:scaleX(1)}
.nav-links a.cta{
  border:1px solid var(--ink);border-radius:0;
  padding:8px 16px;margin-left:6px;font-family:var(--mono);
  font-size:12px;letter-spacing:.08em;
  transition:background .3s var(--ease),color .3s var(--ease);
}
.nav-links a.cta::after{display:none}
.nav-links a.cta:hover{background:var(--ink);color:var(--paper)}
.nav-links a.cta.locked{
  opacity:0;pointer-events:none;transform:translateY(-4px);
  transition:opacity .5s var(--ease),transform .5s var(--ease);
}
.nav-links a.cta.unlocked{opacity:1;pointer-events:auto;transform:none}

:focus-visible{outline:2px solid var(--ink);outline-offset:3px}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer{
  border-top:1px solid var(--line-strong);
  background:var(--paper);
  margin-top:0;
}
.footer-inner{
  max-width:var(--maxw);margin:0 auto;padding:54px var(--pad);
  display:grid;grid-template-columns:1.4fr 1fr;gap:40px;align-items:start;
}
.footer-inner h4{
  font-family:var(--mono);font-size:12px;letter-spacing:.2em;
  text-transform:uppercase;font-weight:500;margin-bottom:14px;
}
.footer-inner p{color:var(--ink-soft);max-width:34ch;font-size:14.5px}
.footer-links{display:flex;flex-direction:column;gap:10px;align-items:flex-start}
.footer-links a{font-size:14px;color:var(--ink-2);position:relative;padding-bottom:2px}
.footer-links a::after{
  content:"";position:absolute;left:0;bottom:0;width:0;height:1px;background:var(--ink);
  transition:width .3s var(--ease);
}
.footer-links a:hover::after{width:100%}
.footer-base{
  border-top:1px solid var(--line);
  max-width:var(--maxw);margin:0 auto;padding:18px var(--pad);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
  font-family:var(--mono);font-size:11px;letter-spacing:.12em;color:var(--ink-faint);
}

/* ============================================================
   HERO / INTERACTIVE LAB
   ============================================================ */
.hero{
  position:relative;
  min-height:calc(100vh - 60px);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  overflow:hidden;padding:32px var(--pad) 56px;
  background:
    radial-gradient(120% 80% at 50% 12%,#ffffff 0%,#fbfbfc 55%,#f3f3f5 100%);
}
/* floor grid */
.hero::before{
  content:"";position:absolute;inset:auto 0 0 0;height:46%;
  background-image:
    linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:46px 46px;
  -webkit-mask-image:linear-gradient(transparent,#000 70%);
  mask-image:linear-gradient(transparent,#000 70%);
  transform:perspective(620px) rotateX(58deg);
  transform-origin:bottom center;
  opacity:.5;pointer-events:none;
}

.lab-frame{
  position:relative;width:100%;max-width:1120px;flex:1;
  display:flex;align-items:center;justify-content:center;
}

/* scaled coordinate stage */
.stage{
  position:relative;
  width:1100px;height:600px;
  transform-origin:center center;
  flex:none;
}

/* central logo */
.hero-logo{
  position:absolute;left:50%;top:39%;transform:translate(-50%,-50%);
  text-align:center;z-index:45;pointer-events:none;
}
.hero-logo .mark{
  width:96px;height:96px;margin:0 auto 16px;
  animation:float 7s ease-in-out infinite;
}
.hero-logo .mark .glow-ring{opacity:0;transition:opacity .8s var(--ease)}
.hero-logo h1{font-size:clamp(34px,5vw,52px);letter-spacing:.04em;font-family:var(--mono);font-weight:500}
.hero-logo .division{
  font-family:var(--serif);font-style:italic;font-size:clamp(20px,3vw,28px);
  color:var(--ink-2);margin-top:2px;
}
.hero-logo .sub{
  margin-top:14px;color:var(--ink-soft);font-size:13.5px;max-width:30ch;margin-inline:auto;
}

/* decorative lab background sits behind interactive layer */
.lab-bg{position:absolute;inset:0;z-index:1;pointer-events:none}
.lab-bg .flicker{animation:flicker 6s steps(1) infinite}

/* interactive objects */
.obj{
  position:absolute;left:0;top:0;
  transform:translate(var(--x,0),var(--y,0)) rotate(var(--r,0deg));
  cursor:grab;z-index:4;touch-action:none;
  filter:drop-shadow(0 6px 10px rgba(11,11,12,.07));
  transition:filter .25s var(--ease);
  will-change:transform;
}
.obj:hover{filter:drop-shadow(0 9px 16px rgba(11,11,12,.13))}
.obj.dragging{cursor:grabbing;z-index:40;filter:drop-shadow(0 16px 26px rgba(11,11,12,.22))}
.obj.selected{outline:1px dashed var(--ink-soft);outline-offset:7px}
.obj .label{
  position:absolute;left:50%;top:-14px;transform:translate(-50%,-100%);
  font-family:var(--mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;
  background:var(--ink);color:var(--paper);padding:3px 8px;white-space:nowrap;
  opacity:0;transition:opacity .2s var(--ease);pointer-events:none;
}
.obj:hover .label,.obj:focus-visible .label,.obj.selected .label{opacity:1}
.obj svg{overflow:visible}

/* arm parts + targets */
.arm-part{z-index:6}
.arm-part.locked{
  cursor:default;pointer-events:none;z-index:3;
  filter:drop-shadow(0 0 0 transparent);
}
.arm-part.locked .halo{opacity:.13}
.arm-part .halo{
  opacity:0;transition:opacity .6s var(--ease);
}
.arm-part.locked .fillable{fill:var(--ink);transition:fill .5s var(--ease)}
.arm-part.locked .invert{stroke:var(--paper)}

.ghost{
  position:absolute;left:0;top:0;z-index:2;pointer-events:none;
  transform:translate(var(--x,0),var(--y,0));
}
.ghost svg *{stroke:var(--line-2);stroke-dasharray:5 5;fill:none}
.target-pulse{
  position:absolute;width:18px;height:18px;border-radius:50%;
  border:1px solid var(--ink);z-index:2;pointer-events:none;
  transform:translate(-50%,-50%);opacity:0;
}
.target-pulse.active{opacity:1;animation:targetPulse 1.8s ease-in-out infinite}

/* LED dots + scan (revealed when powered) */
.led{opacity:0}
.stage.powered .led{animation:ledOn .5s var(--ease) forwards,ledPulse 1.6s ease-in-out infinite 1s}
.scan-line{opacity:0}
.stage.powered .scan-line{animation:scan 2.4s ease-in-out 1s infinite}
.stage.powered .lab-bg .surg-light{animation:lightBeam 4s ease-in-out infinite}

/* challenge HUD */
.hud{
  position:absolute;left:50%;bottom:14px;transform:translateX(-50%);
  z-index:8;text-align:center;width:max-content;max-width:90vw;
}
.hud .challenge{font-family:var(--mono);font-size:12px;letter-spacing:.08em;color:var(--ink-soft)}
.hud .progress{
  margin-top:8px;font-family:var(--mono);font-size:13px;letter-spacing:.14em;
  text-transform:uppercase;display:inline-flex;align-items:center;gap:10px;
}
.hud .bar{width:120px;height:2px;background:var(--line-2);position:relative}
.hud .bar i{position:absolute;left:0;top:0;height:100%;width:0;background:var(--ink);transition:width .5s var(--ease)}
.hud .reset{
  margin-top:10px;font-family:var(--mono);font-size:10px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--ink-faint);border:0;background:none;cursor:pointer;
  border-bottom:1px solid transparent;
}
.hud .reset:hover{color:var(--ink);border-bottom-color:var(--ink)}

/* enter button */
.enter-wrap{
  position:absolute;left:50%;bottom:54px;transform:translateX(-50%) translateY(14px);
  z-index:9;opacity:0;pointer-events:none;transition:opacity .6s var(--ease),transform .6s var(--ease);
}
.enter-wrap.show{opacity:1;pointer-events:auto;transform:translateX(-50%)}
.enter-btn{
  font-family:var(--mono);font-size:13px;letter-spacing:.1em;text-transform:uppercase;
  padding:14px 30px;border:1px solid var(--ink);background:var(--paper);color:var(--ink);
  cursor:pointer;position:relative;overflow:hidden;transition:color .35s var(--ease);
}
.enter-btn span{position:relative;z-index:2}
.enter-btn::before{
  content:"";position:absolute;inset:0;background:var(--ink);
  transform:translateY(101%);transition:transform .4s var(--ease);
}
.enter-btn:hover{color:var(--paper)}
.enter-btn:hover::before{transform:translateY(0)}

.scroll-cue{
  position:absolute;left:50%;bottom:18px;transform:translateX(-50%);
  font-family:var(--mono);font-size:10px;letter-spacing:.2em;color:var(--ink-faint);
  text-transform:uppercase;animation:float 3s ease-in-out infinite;
}

/* ============================================================
   REDESIGNED HOMEPAGE CENTRAL HERO
   ============================================================ */
.hero.hero--redesigned{
  min-height:calc(100vh - 60px);
  padding:clamp(48px,7vw,84px) var(--pad) 56px;
  justify-content:center;
  background:
    radial-gradient(110% 90% at 15% 0%, rgba(255,255,255,1) 0%, rgba(248,248,250,1) 45%, rgba(240,241,244,1) 100%);
}
.hero.hero--redesigned::before{
  height:58%;
  background-size:40px 40px;
  opacity:.36;
}
.central-hero__bg{
  position:absolute;inset:0;pointer-events:none;
  background:
    radial-gradient(circle at 20% 22%, rgba(255,255,255,.95) 0, rgba(255,255,255,0) 24%),
    radial-gradient(circle at 85% 22%, rgba(255,255,255,.65) 0, rgba(255,255,255,0) 22%),
    radial-gradient(circle at 50% 60%, rgba(255,255,255,.4) 0, rgba(255,255,255,0) 34%);
}
.central-hero__layout{
  position:relative;z-index:2;
  width:min(1180px,100%);
  display:grid;grid-template-columns:minmax(0,1fr) minmax(420px,540px);
  gap:clamp(34px,5vw,72px);align-items:center;
}
.central-hero__content{max-width:620px;}
.central-hero__eyebrow{
  display:inline-flex;align-items:center;gap:12px;
  font-family:var(--mono);font-size:11px;letter-spacing:.22em;text-transform:uppercase;color:var(--ink-soft);
}
.central-hero__eyebrow::before{
  content:"";width:48px;height:1px;background:var(--line-2);display:block;
}
.central-hero__title{
  margin-top:22px;
  font-family:"Playfair Display", var(--serif);
  font-size:clamp(48px,7vw,86px);line-height:.9;font-weight:600;letter-spacing:-.045em;
}
.central-hero__title span,.central-hero__title em{display:block}
.central-hero__title em{
  font-style:italic;font-weight:500;color:var(--ink-2);
}
.central-hero__lede{
  margin-top:24px;max-width:58ch;color:var(--ink-soft);font-size:18px;line-height:1.8;
}
.central-hero__actions{
  display:flex;flex-wrap:wrap;gap:14px;margin-top:30px;
}
.central-hero__btn{
  display:inline-flex;align-items:center;justify-content:center;
  min-width:172px;padding:14px 24px;border:1px solid var(--ink);
  font-family:var(--mono);font-size:12px;letter-spacing:.12em;text-transform:uppercase;
  transition:transform .3s var(--ease), background .3s var(--ease), color .3s var(--ease), box-shadow .3s var(--ease);
}
.central-hero__btn:hover{transform:translateY(-2px)}
.central-hero__btn--primary{background:var(--ink);color:var(--paper);box-shadow:0 18px 36px -26px rgba(11,11,12,.65)}
.central-hero__btn--secondary{background:rgba(255,255,255,.7);backdrop-filter:blur(8px)}
.central-hero__btn--secondary:hover{background:var(--ink);color:var(--paper)}
.central-hero__stats{
  margin-top:34px;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px;
}
.central-hero__stat{
  border:1px solid var(--line);background:rgba(255,255,255,.7);backdrop-filter:blur(10px);
  padding:18px 18px 16px;min-height:104px;box-shadow:0 20px 40px -34px rgba(11,11,12,.32);
}
.central-hero__stat strong{
  display:block;font-family:var(--serif);font-size:22px;font-weight:500;line-height:1.1;
}
.central-hero__stat span{
  display:block;margin-top:10px;color:var(--ink-soft);font-size:12px;letter-spacing:.08em;text-transform:uppercase;
}
.central-hero__visual{position:relative}
.central-hero__panel{
  position:relative;isolation:isolate;
  aspect-ratio:1/1;border:1px solid var(--line);
  background:linear-gradient(180deg, rgba(255,255,255,.92) 0%, rgba(249,249,251,.96) 100%);
  box-shadow:0 38px 80px -50px rgba(11,11,12,.45);
  overflow:hidden;
}
.central-hero__panel::before{
  content:"";position:absolute;inset:8% 8%;border-radius:50%;
  border:1px solid rgba(11,11,12,.05);background:radial-gradient(circle, rgba(255,255,255,.88) 0%, rgba(255,255,255,0) 68%);
}
.central-hero__grid{
  position:absolute;inset:0;opacity:.05;
  background-image:linear-gradient(#0b0b0c 1px,transparent 1px),linear-gradient(90deg,#0b0b0c 1px,transparent 1px);
  background-size:30px 30px;
}
.central-hero__illustration{
  position:absolute;inset:11%;width:78%;height:78%;margin:auto;z-index:2;
  animation:heroBob 7s ease-in-out infinite;
}
.central-hero__orbit{
  position:absolute;inset:0;z-index:3;pointer-events:none;
}
.central-hero__orbit-icon{
  position:absolute;left:50%;top:50%;width:72px;height:72px;border-radius:50%;
  margin:-36px;display:grid;place-items:center;color:var(--ink);
  background:rgba(255,255,255,.9);border:1px solid var(--line);
  box-shadow:0 24px 44px -34px rgba(11,11,12,.5);
}
.central-hero__orbit--one{animation:orbitSpin 19s linear infinite}
.central-hero__orbit--one .central-hero__orbit-icon{transform:translate(164px,-122px)}
.central-hero__orbit--two{animation:orbitSpinReverse 24s linear infinite}
.central-hero__orbit--two .central-hero__orbit-icon{transform:translate(-176px,98px)}
.central-hero__orbit--three{animation:orbitSpin 28s linear infinite}
.central-hero__orbit--three .central-hero__orbit-icon{transform:translate(38px,198px)}
.central-hero__floating-card{
  position:absolute;z-index:4;border:1px solid var(--line);
  background:rgba(255,255,255,.84);backdrop-filter:blur(12px);
  padding:11px 16px;font-family:var(--mono);font-size:11px;letter-spacing:.12em;text-transform:uppercase;
  color:var(--ink-soft);box-shadow:0 22px 40px -34px rgba(11,11,12,.42);
}
.central-hero__floating-card span{white-space:nowrap}
.central-hero__floating-card--left{left:4%;top:16%;animation:heroDriftOne 7s ease-in-out infinite}
.central-hero__floating-card--right{right:6%;top:22%;animation:heroDriftTwo 8.5s ease-in-out infinite}
.central-hero__floating-card--bottom{left:50%;bottom:8%;transform:translateX(-50%);animation:heroDriftThree 9s ease-in-out infinite}
.central-hero__scroll{
  position:absolute;left:50%;bottom:20px;transform:translateX(-50%);
  z-index:3;font-family:var(--mono);font-size:10px;letter-spacing:.18em;text-transform:uppercase;color:var(--ink-faint);
}

@keyframes orbitSpin{from{transform:rotate(0deg)}to{transform:rotate(360deg)}}
@keyframes orbitSpinReverse{from{transform:rotate(360deg)}to{transform:rotate(0deg)}}
@keyframes heroBob{0%,100%{transform:translateY(0)}50%{transform:translateY(-10px)}}
@keyframes heroDriftOne{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(14px,-12px,0)}}
@keyframes heroDriftTwo{0%,100%{transform:translate3d(0,0,0)}50%{transform:translate3d(-14px,12px,0)}}
@keyframes heroDriftThree{0%,100%{transform:translateX(-50%) translateY(0)}50%{transform:translateX(-50%) translateY(-10px)}}

/* ============================================================
   RESEARCH SECTION + CARDS
   ============================================================ */
.section{padding:clamp(64px,9vw,120px) var(--pad)}
.section-inner{max-width:var(--maxw);margin:0 auto}
.section-head{max-width:62ch;margin-bottom:56px}
.section-head h2{font-size:clamp(30px,4.4vw,46px);margin:14px 0 18px}
.section-head p{color:var(--ink-soft);font-size:16.5px;max-width:60ch}
.rule{height:1px;background:var(--line);width:100%}

.card-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));
  border-top:1px solid var(--line);border-left:1px solid var(--line);
}
.card{
  border-right:1px solid var(--line);border-bottom:1px solid var(--line);
  padding:30px 28px 26px;background:var(--paper);position:relative;
  display:flex;flex-direction:column;min-height:280px;
  transition:background .35s var(--ease);
}
.card::after{
  content:"";position:absolute;left:0;top:0;height:2px;width:0;background:var(--ink);
  transition:width .4s var(--ease);
}
.card:hover{background:var(--paper-2)}
.card:hover::after{width:100%}
.card .num{font-family:var(--mono);font-size:12px;letter-spacing:.2em;color:var(--ink-faint)}
.card h3{font-size:23px;margin:14px 0 12px;line-height:1.16}
.card .summary{color:var(--ink-soft);font-size:14.5px;flex:1}
.card .tags{display:flex;flex-wrap:wrap;gap:6px;margin:18px 0 16px}
.card .tag{
  font-family:var(--mono);font-size:10px;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--line-2);padding:3px 8px;color:var(--ink-soft);
}
.card .explore{
  font-family:var(--mono);font-size:12px;letter-spacing:.1em;text-transform:uppercase;
  display:inline-flex;align-items:center;gap:8px;color:var(--ink);
}
.card .explore svg{transition:transform .3s var(--ease)}
.card:hover .explore svg{transform:translateX(5px)}

/* scroll reveal */
.reveal{opacity:0;transform:translateY(22px);transition:opacity .7s var(--ease),transform .7s var(--ease)}
.reveal.visible{opacity:1;transform:none}

/* ============================================================
   SUBPAGES
   ============================================================ */
.proj-hero{
  border-bottom:1px solid var(--line);
  padding:clamp(54px,8vw,96px) var(--pad) clamp(40px,6vw,72px);
  background:radial-gradient(120% 130% at 78% 0%,#fafafb 0%,#fff 60%);
}
.proj-hero-inner{
  max-width:var(--maxw);margin:0 auto;
  display:grid;grid-template-columns:1.25fr .9fr;gap:48px;align-items:center;
}
.proj-hero .category{margin-bottom:18px}
.proj-hero h1{font-size:clamp(34px,5.6vw,62px);margin-bottom:18px}
.proj-hero .subtitle{
  font-family:var(--serif);font-style:italic;font-size:clamp(17px,2.4vw,22px);
  color:var(--ink-2);max-width:46ch;line-height:1.4;
}
.proj-art{
  border:1px solid var(--line);background:var(--paper);
  aspect-ratio:1/1;display:flex;align-items:center;justify-content:center;
  position:relative;overflow:hidden;
}
.proj-art::before{
  content:"";position:absolute;inset:0;
  background-image:linear-gradient(var(--line) 1px,transparent 1px),
    linear-gradient(90deg,var(--line) 1px,transparent 1px);
  background-size:30px 30px;opacity:.4;
}
.proj-art svg{position:relative;z-index:2;width:78%;height:78%}

.proj-body{max-width:840px;margin:0 auto;padding:clamp(48px,7vw,90px) var(--pad)}
.proj-section{margin-bottom:clamp(46px,6vw,76px)}
.proj-section .eyebrow{margin-bottom:14px}
.proj-section h2{font-size:clamp(24px,3.4vw,34px);margin-bottom:20px}
.proj-section > p{color:var(--ink-2);font-size:16.5px;max-width:68ch;margin-bottom:16px}

.spec-list{list-style:none;border-top:1px solid var(--line)}
.spec-list li{
  border-bottom:1px solid var(--line);padding:16px 4px 16px 0;
  display:flex;gap:18px;align-items:baseline;
}
.spec-list li .idx{font-family:var(--mono);font-size:12px;color:var(--ink-faint);min-width:32px}
.spec-list li .txt{font-size:16px}

.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.feature-grid .f{background:var(--paper);padding:22px 22px 24px}
.feature-grid .f .k{font-family:var(--mono);font-size:11px;letter-spacing:.18em;color:var(--ink-faint);text-transform:uppercase}
.feature-grid .f .v{font-family:var(--serif);font-size:19px;margin-top:8px;line-height:1.25}

.app-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:6px}
.app-tags span{
  border:1px solid var(--line-2);padding:8px 14px;font-size:14px;
  transition:background .3s var(--ease),color .3s var(--ease);
}
.app-tags span:hover{background:var(--ink);color:var(--paper);border-color:var(--ink)}

/* development pathway stepper */
.pathway{display:flex;flex-wrap:wrap;align-items:stretch;gap:0;margin-top:8px;counter-reset:step}
.pathway .step{
  flex:1 1 150px;border:1px solid var(--line);border-right:0;padding:20px 18px;
  position:relative;background:var(--paper);
}
.pathway .step:last-child{border-right:1px solid var(--line)}
.pathway .step::before{
  counter-increment:step;content:"0" counter(step);
  font-family:var(--mono);font-size:11px;letter-spacing:.14em;color:var(--ink-faint);
}
.pathway .step .lbl{display:block;margin-top:10px;font-size:14.5px;line-height:1.35}
.pathway .step .arrow{
  position:absolute;right:-7px;top:50%;transform:translateY(-50%);
  width:13px;height:13px;background:var(--paper);border-right:1px solid var(--ink);
  border-top:1px solid var(--ink);rotate:45deg;z-index:3;
}
.pathway .step:last-child .arrow{display:none}

.back-link{
  display:inline-flex;align-items:center;gap:10px;margin-top:24px;
  font-family:var(--mono);font-size:13px;letter-spacing:.08em;text-transform:uppercase;
  border:1px solid var(--ink);padding:13px 24px;
  transition:background .3s var(--ease),color .3s var(--ease);
}
.back-link svg{transition:transform .3s var(--ease)}
.back-link:hover{background:var(--ink);color:var(--paper)}
.back-link:hover svg{transform:translateX(-4px)}
.back-link:hover svg *{stroke:var(--paper)}

/* flagship animated robot art */
.robot-stage svg{width:90%;height:90%}
.robot-stage .joint{transform-box:fill-box;transform-origin:center}
.robot-stage .j-fore{animation:armSweep 6s ease-in-out infinite;transform-origin:left center;transform-box:fill-box}
.robot-stage .j-upper{animation:armNod 6s ease-in-out infinite;transform-origin:left center;transform-box:fill-box}
.robot-stage .r-scan{animation:scan 3s ease-in-out infinite}
.robot-stage .r-led{animation:ledPulse 1.8s ease-in-out infinite}

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-9px)}}
@keyframes dash{to{stroke-dashoffset:-12}}
@keyframes targetPulse{0%,100%{transform:translate(-50%,-50%) scale(1);opacity:.5}50%{transform:translate(-50%,-50%) scale(1.7);opacity:1}}
@keyframes flicker{0%,97%,100%{opacity:1}98%{opacity:.55}99%{opacity:.85}}
@keyframes ledOn{to{opacity:1}}
@keyframes ledPulse{0%,100%{opacity:1}50%{opacity:.35}}
@keyframes scan{0%{transform:translateY(0);opacity:0}10%{opacity:.9}90%{opacity:.9}100%{transform:translateY(46px);opacity:0}}
@keyframes lightBeam{0%,100%{opacity:.5}50%{opacity:.9}}
@keyframes glowPulse{0%,100%{opacity:.4}50%{opacity:.9}}
@keyframes armSweep{0%,100%{transform:rotate(0deg)}50%{transform:rotate(-13deg)}}
@keyframes armNod{0%,100%{transform:rotate(0deg)}50%{transform:rotate(9deg)}}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media(max-width:860px){
  .footer-inner{grid-template-columns:1fr;gap:30px}
  .proj-hero-inner{grid-template-columns:1fr;gap:34px}
  .proj-art{max-width:340px}
  .central-hero__layout{grid-template-columns:1fr;gap:34px}
  .central-hero__content{max-width:none}
  .central-hero__stats{grid-template-columns:1fr}
  .central-hero__visual{max-width:640px;width:100%;margin:0 auto}
}
@media(max-width:720px){
  .brand .wordmark small{display:none}
  .nav{gap:12px}
  .nav-links a{padding:8px 9px;font-size:13px}
  .hero-logo{top:34%}
  .hud .challenge{font-size:11px}
  .scroll-cue{display:none}
  .central-hero__title{font-size:clamp(40px,13vw,68px)}
  .central-hero__lede{font-size:16.5px}
  .central-hero__actions{flex-direction:column;align-items:stretch}
  .central-hero__btn{width:100%}
  .central-hero__panel{aspect-ratio:1/1.02}
  .central-hero__orbit-icon{width:62px;height:62px;margin:-31px}
  .central-hero__orbit--one .central-hero__orbit-icon{transform:translate(118px,-112px)}
  .central-hero__orbit--two .central-hero__orbit-icon{transform:translate(-134px,84px)}
  .central-hero__orbit--three .central-hero__orbit-icon{transform:translate(20px,150px)}
  .central-hero__floating-card{font-size:10px;padding:10px 13px}
  .central-hero__scroll{display:none}
}
@media(max-width:560px){
  .nav-links a:not(.cta){padding:8px 7px}
  .central-hero__panel{min-height:360px}
  .central-hero__floating-card--left{left:2%;top:10%}
  .central-hero__floating-card--right{right:2%;top:18%}
  .central-hero__floating-card--bottom{bottom:6%}
}

@media(prefers-reduced-motion:reduce){
  *{animation-duration:.001ms!important;animation-iteration-count:1!important;
    transition-duration:.05ms!important;scroll-behavior:auto!important}
  body{opacity:1;animation:none}
}

/* ============================================================
   SUBPAGE EXHIBITS (bespoke animated hero scenes)
   ============================================================ */
.proj-hero-inner.exhibit-layout{display:block}
.hero-copy{max-width:740px;margin:0 auto clamp(30px,4vw,46px);text-align:center}
.hero-copy .subtitle{margin-inline:auto}
.exhibit{
  position:relative;border:1px solid var(--line);overflow:hidden;border-radius:2px;
  background:linear-gradient(180deg,#ffffff 0%,#fcfcfd 100%);
}
.exhibit svg{display:block;width:100%;height:auto}
.exhibit::after{ /* faint engineering grid */
  content:"";position:absolute;inset:0;pointer-events:none;
  background-image:linear-gradient(#0b0b0c 1px,transparent 1px),linear-gradient(90deg,#0b0b0c 1px,transparent 1px);
  background-size:34px 34px;opacity:.025;
}
.exhibit--flagship{box-shadow:0 30px 60px -40px rgba(11,11,12,.4)}

.ex-foot{
  position:relative;z-index:2;display:flex;flex-wrap:wrap;gap:16px;align-items:center;
  justify-content:space-between;padding:16px 20px;border-top:1px solid var(--line);
  background:var(--paper);
}
.ex-legend,.ex-tabs{display:flex;flex-wrap:wrap;gap:7px}
.ex-chip{
  border:1px solid var(--line-2);padding:7px 12px;font-family:var(--mono);font-size:11px;
  letter-spacing:.08em;text-transform:uppercase;cursor:pointer;background:var(--paper);
  color:var(--ink-soft);transition:background .25s var(--ease),color .25s var(--ease),border-color .25s var(--ease);
}
.ex-chip:hover,.ex-chip.on{background:var(--ink);color:var(--paper);border-color:var(--ink)}
.ex-note{
  font-family:var(--mono);font-size:12px;color:var(--ink-soft);min-height:1.3em;
  letter-spacing:.02em;max-width:46ch;
}
.ex-range{appearance:none;-webkit-appearance:none;width:100%;height:2px;background:var(--line-2);outline:none;margin:4px 0}
.ex-range::-webkit-slider-thumb{appearance:none;-webkit-appearance:none;width:15px;height:15px;background:var(--ink);border-radius:50%;cursor:pointer}
.ex-range::-moz-range-thumb{width:15px;height:15px;background:var(--ink);border:0;border-radius:50%;cursor:pointer}
.ex-slider-wrap{flex:1 1 280px;min-width:240px}
.ex-steps{display:flex;justify-content:space-between;font-family:var(--mono);font-size:9.5px;letter-spacing:.06em;color:var(--ink-faint);text-transform:uppercase;margin-top:9px;gap:4px}
.ex-steps span{cursor:pointer;transition:color .2s var(--ease)}
.ex-steps span:hover{color:var(--ink)}
.ex-steps span.on{color:var(--ink);font-weight:500}
.ex-stagebar{flex:1 1 100%;height:2px;background:var(--line);position:relative;margin-top:2px}
.ex-stagebar i{position:absolute;left:0;top:0;height:100%;background:var(--ink);transition:width .6s var(--ease)}

@media(max-width:720px){
  .hero-copy{text-align:left}
  .hero-copy .subtitle{margin-inline:0}
}

/* ============================================================
   LAI KA visual polish — logo-led lab portfolio style
   ============================================================ */
:root{
  --paper:#fbfbfb;
  --paper-2:#ffffff;
  --wash:#f3f5f6;
  --ink:#0b0b0c;
  --ink-2:#202124;
  --ink-soft:#6f7379;
  --line:#e7e8ea;
  --line-2:#d8dadd;
  --blueprint:#bed0d7;
}
body{
  background:radial-gradient(1000px 540px at 50% 8%,#fff 0%,#fff 45%,#f5f6f7 100%);
}
.site-header{
  border-bottom:0;
  background:rgba(255,255,255,.78);
  box-shadow:0 1px 0 rgba(11,11,12,.06);
}
.nav{padding-top:12px;padding-bottom:12px}
.brand{gap:0;min-width:220px}
.brand-logo{
  width:clamp(180px,20vw,260px);
  height:auto;
  object-fit:contain;
  filter:grayscale(1) contrast(1.04);
}
.nav-links a{font-family:var(--mono);letter-spacing:.08em;text-transform:uppercase;font-size:11px;color:#34363a}
.nav-links a.cta{border-radius:999px;background:#fff}
.hero{
  min-height:calc(100vh - 62px);
  padding:18px var(--pad) 44px;
  background:
    radial-gradient(520px 340px at 75% 44%,rgba(190,208,215,.22),transparent 65%),
    radial-gradient(480px 320px at 22% 70%,rgba(11,11,12,.035),transparent 70%),
    linear-gradient(180deg,#fff 0%,#fbfbfc 62%,#f4f5f6 100%);
}
.hero::before{display:none}
.stage{height:660px}
.lab-bg svg{height:660px;width:1100px}
.lab-bg .desk rect:first-child{fill:#f9fafb;stroke-width:2.2}
.hero-logo{
  top:32%;
  width:min(560px,68vw);
  z-index:38;
}
.hero-logo-img{
  width:min(430px,52vw);
  height:auto;
  margin:0 auto 36px;
  filter:grayscale(1) contrast(1.08);
  background:rgba(255,255,255,.55);
}
.hero-logo h1{
  font-family:var(--mono);
  font-size:clamp(44px,7vw,72px);
  letter-spacing:.34em;
  font-weight:500;
  line-height:.95;
  margin-left:.34em;
}
.hero-logo .division{
  font-family:Georgia,'Times New Roman',serif;
  font-size:clamp(24px,3.5vw,38px);
  font-style:italic;
  color:#333;
  margin-top:18px;
  letter-spacing:-.02em;
}
.hero-logo .sub{
  margin-top:26px;
  font-size:18px;
  line-height:1.7;
  color:#737780;
  max-width:380px;
}
.obj svg{stroke-width:2.1px}
.obj svg [fill="#fafafb"],.obj svg [fill="#f4f4f5"]{fill:#edf3f5}
.obj:hover{filter:drop-shadow(0 13px 18px rgba(11,11,12,.16))}
.ghost{opacity:.55;transform:translate(650px,210px) scale(1.08)}
.arm-part svg [fill="#fafafb"],.arm-part svg [fill="#f4f4f5"]{fill:var(--blueprint)}
.arm-part svg [fill="#0b0b0c"]{fill:#121315}
.arm-part.locked .fillable{fill:#121315}
.hud{
  left:auto;right:28px;bottom:28px;top:auto;
  width:min(330px,calc(100% - 56px));
  background:rgba(255,255,255,.68);
  backdrop-filter:blur(12px);
  border:1px solid rgba(11,11,12,.12);
  box-shadow:0 20px 60px rgba(11,11,12,.08);
}
.challenge{font-size:11px;letter-spacing:.14em;color:#333}
.progress{font-size:11px;color:#6f7379}
.enter-wrap{bottom:112px}
.enter-btn{border-radius:999px;background:#0b0b0c;color:#fff;box-shadow:0 16px 40px rgba(11,11,12,.18)}
.scroll-cue{font-family:var(--mono);letter-spacing:.16em;color:#8b8e94}
.section{background:#fff}
.section-head h2,.proj-section h2{font-family:Georgia,'Times New Roman',serif;font-style:italic;letter-spacing:-.025em}
.card{
  background:linear-gradient(180deg,#fff,#fbfbfb);
  border-color:#111;
  box-shadow:0 16px 45px rgba(11,11,12,.055);
}
.card:hover{box-shadow:0 24px 70px rgba(11,11,12,.12)}
.card-media{background:linear-gradient(150deg,#fff 0%,#f0f4f6 100%)}
.proj-hero{
  background:
    radial-gradient(520px 330px at 75% 30%,rgba(190,208,215,.24),transparent 70%),
    linear-gradient(180deg,#fff 0%,#f6f7f8 100%);
  border-bottom:1px solid var(--ink);
}
.proj-hero-inner{position:relative}
.proj-hero-inner::before{
  content:"";
  position:absolute;right:var(--pad);top:34px;
  width:min(330px,38vw);height:120px;
  background:url('logo.png') center/contain no-repeat;
  opacity:.08;
  filter:grayscale(1);
  pointer-events:none;
}
.proj-hero .subtitle,.proj-section p{color:#6f7379}
.feature-grid .f,.spec-list li,.pathway .step{background:#fff;box-shadow:0 14px 35px rgba(11,11,12,.045)}
.site-footer{background:#f8f9fa}
.footer-inner h4{font-family:var(--mono)}
@media(max-width:760px){
  .brand{min-width:auto}.brand-logo{width:170px}.nav{gap:12px}.nav-links a{padding:7px 8px;font-size:10px}
  .hero-logo{top:29%;width:90vw}.hero-logo-img{width:min(330px,76vw);margin-bottom:24px}.hero-logo h1{font-size:42px;letter-spacing:.22em;margin-left:.22em}.hero-logo .division{font-size:24px}.hero-logo .sub{font-size:15px}
  .hud{right:14px;bottom:18px}.stage{height:640px}.lab-bg svg{height:640px}
}

/* ============================================================
   Reference-style homepage polish: clean lab bench layout
   ============================================================ */
.hero{background:#fff; min-height:calc(100vh - 62px); padding-top:10px; padding-bottom:10px}
.hero::before{display:none}
.stage{height:640px; max-width:1120px; transform:scale(1.02)}
.lab-bg svg{height:640px}
.hero-logo{top:36%; width:min(600px,92vw)}
.hero-logo-img{width:min(430px,72vw); margin:0 auto 38px; filter:none; mix-blend-mode:multiply}
.hero-logo h1{font-family:var(--mono); font-size:clamp(42px,6.2vw,64px); letter-spacing:.28em; margin-left:.28em; font-weight:600; line-height:1}
.hero-logo .division{font-family:var(--serif); font-style:italic; font-size:clamp(24px,3.5vw,34px); margin-top:10px; color:#303136}
.hero-logo .sub{font-size:17px; line-height:1.6; color:#6f7177; margin-top:28px; max-width:34ch}
.lab-bg .desk rect:first-child{fill:#fff!important;stroke-width:2.2!important}
.obj[aria-label="Neural network diagram"],
.obj[aria-label="Computer terminal"],
.obj[aria-label="Research papers"],
.obj[aria-label="Microscope"]{display:none!important}
.obj{filter:drop-shadow(0 4px 10px rgba(11,11,12,.05))}
.obj .label{display:none}
@media(max-width:760px){
  .stage{transform:scale(.62); transform-origin:top center; height:640px}
  .hero{min-height:720px; justify-content:flex-start; padding-top:28px}
  .hero-logo{top:34%}.hero-logo-img{width:360px}.hero-logo h1{font-size:46px}.hero-logo .sub{font-size:16px}
}

/* ============================================================
   Surgical needle-holder patent exhibit page
   ============================================================ */
.nh-hero{position:relative; overflow:hidden; background:linear-gradient(180deg,#fff,#fafafb); border-bottom:1px solid var(--line-strong)}
.nh-hero::before{content:""; position:absolute; inset:0; background:radial-gradient(circle at 78% 22%,rgba(11,11,12,.06),transparent 28%),radial-gradient(circle at 8% 90%,rgba(11,11,12,.04),transparent 32%); pointer-events:none}
.nh-hero .proj-hero-inner{position:relative; z-index:1}
.nh-exhibit{border:1px solid var(--line-strong); background:#fff; border-radius:18px; padding:18px; box-shadow:0 20px 60px rgba(11,11,12,.06)}
.nh-main-figure{position:relative; min-height:360px; display:flex; align-items:center; justify-content:center; overflow:hidden; background:linear-gradient(180deg,#fff,#fbfbfc); border:1px solid var(--line); border-radius:14px}
.nh-main-figure::before{content:""; position:absolute; inset:18px; background-image:linear-gradient(#0b0b0c 1px,transparent 1px),linear-gradient(90deg,#0b0b0c 1px,transparent 1px); background-size:32px 32px; opacity:.035; mask-image:radial-gradient(circle at center,#000,transparent 72%)}
.nh-main-figure img{position:relative; z-index:1; max-width:96%; max-height:330px; filter:saturate(0) contrast(1.04)}
.nh-hotspot{position:absolute; z-index:2; width:18px; height:18px; border:1px solid var(--ink); border-radius:50%; background:#fff; display:grid; place-items:center; font-family:var(--mono); font-size:9px; cursor:pointer; transition:.25s var(--ease)}
.nh-hotspot:hover,.nh-hotspot.on{background:#0b0b0c; color:#fff; transform:scale(1.2)}
.nh-caption{font-family:var(--mono); font-size:10px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-faint); margin-top:12px; text-align:center}
.nh-chip-grid{display:grid; grid-template-columns:repeat(3,1fr); gap:8px; margin-top:14px}
.nh-chip{border:1px solid var(--line); padding:9px 10px; font-family:var(--mono); font-size:10px; letter-spacing:.06em; text-transform:uppercase; background:#fff; cursor:pointer; transition:.2s}
.nh-chip.on,.nh-chip:hover{border-color:#0b0b0c; background:#0b0b0c; color:#fff}
.nh-note{min-height:46px; color:#54565c; font-size:13px; margin-top:12px; line-height:1.5}
.nh-precision-grid{display:grid; grid-template-columns:1.05fr .95fr; gap:24px; align-items:start; margin-top:34px}
.nh-panel{border:1px solid var(--line); border-radius:16px; background:#fff; padding:clamp(18px,2.8vw,28px); overflow:hidden}
.nh-panel h3{font-family:var(--mono); font-size:11px; letter-spacing:.16em; text-transform:uppercase; font-weight:500; color:var(--ink-faint); margin:0 0 14px}
.nh-large-img{height:320px; display:flex; align-items:center; justify-content:center; background:#fff; border:1px solid var(--line); border-radius:12px; margin-bottom:16px}
.nh-large-img img{max-width:94%; max-height:290px; filter:saturate(0) contrast(1.03)}
.nh-callouts{display:grid; gap:10px; margin-top:16px}
.nh-callout{display:grid; grid-template-columns:36px 1fr; gap:12px; align-items:start; border-top:1px solid var(--line); padding-top:12px}
.nh-callout b{font-family:var(--mono); font-size:11px; border:1px solid #0b0b0c; width:30px; height:30px; display:grid; place-items:center; border-radius:50%; font-weight:500}
.nh-callout span{font-size:14px; color:#484a50}
.nh-gallery{display:grid; grid-template-columns:repeat(3,1fr); gap:0; border:1px solid var(--line); border-radius:16px; overflow:hidden; background:#fff; margin-top:28px}
.nh-tile{padding:18px; border-right:1px solid var(--line); border-bottom:1px solid var(--line); display:flex; flex-direction:column; align-items:center; justify-content:space-between; min-height:240px}
.nh-tile:nth-child(3n){border-right:none}.nh-tile:nth-last-child(-n+3){border-bottom:none}
.nh-tile img{max-width:100%; max-height:145px; object-fit:contain; filter:saturate(0) contrast(1.05); transition:transform .35s var(--ease)}
.nh-tile:hover img{transform:scale(1.06)}
.nh-tile .k{font-family:var(--mono); font-size:9px; letter-spacing:.12em; text-transform:uppercase; color:var(--ink-faint); margin-top:14px}
.nh-tile .v{font-size:14px; line-height:1.35; text-align:center; margin-top:6px; color:#33343a}
.nh-flow{display:grid; grid-template-columns:repeat(5,1fr); gap:0; border:1px solid var(--line); border-radius:16px; overflow:hidden; margin-top:22px}
.nh-flow-step{padding:18px 14px; min-height:120px; border-right:1px solid var(--line); background:#fff; position:relative}
.nh-flow-step:last-child{border-right:none}.nh-flow-step::after{content:"→"; position:absolute; right:-10px; top:50%; transform:translateY(-50%); background:#fff; font-family:var(--mono); color:var(--ink-faint); padding:0 4px}.nh-flow-step:last-child::after{display:none}
.nh-flow-step b{font-family:var(--mono); font-size:11px; display:block; margin-bottom:8px}.nh-flow-step span{font-size:13px; color:#55575d; line-height:1.35}
@media(max-width:860px){.nh-precision-grid{grid-template-columns:1fr}.nh-gallery{grid-template-columns:1fr 1fr}.nh-tile:nth-child(n){border-right:1px solid var(--line);border-bottom:1px solid var(--line)}.nh-tile:nth-child(2n){border-right:none}.nh-flow{grid-template-columns:1fr}.nh-flow-step{border-right:none;border-bottom:1px solid var(--line)}.nh-flow-step::after{display:none}.nh-chip-grid{grid-template-columns:1fr}}
@media(max-width:540px){.nh-gallery{grid-template-columns:1fr}.nh-tile:nth-child(n){border-right:none}.nh-main-figure{min-height:280px}.nh-large-img{height:250px}}

/* ============================================================
   Site-wide polish pass — applies to every page
   (sticky-header anchor offset, balanced/pretty type,
    reduced-motion accessibility). Layout & look unchanged.
   ============================================================ */
:root{ --header-h:62px }

/* anchored sections (#research, #projects, deep links) no longer
   hide under the sticky header when jumped to from the nav */
[id]{ scroll-margin-top:calc(var(--header-h) + 16px) }

/* nicer, less ragged line breaks for display + body type */
h1,h2,h3{ text-wrap:balance }
.section-head p,.proj-section > p,.card .summary,
.proj-hero .subtitle,.footer-inner p{ text-wrap:pretty }

/* tabular figures keep the mono index labels aligned */
.num,.eyebrow,.mono,.nh-callout b{ font-variant-numeric:tabular-nums }

/* honour reduced-motion without changing the visual design */
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  body{ animation:none !important; opacity:1 !important }
  .reveal{ opacity:1 !important; transform:none !important }
}

/* ============================================================
   Final visual polish pass — content-safe redesign layer
   Improves spacing, hierarchy, surfaces, and interaction states
   without changing HTML content or site behavior.
   ============================================================ */
:root{
  --surface:#ffffff;
  --surface-soft:#f7f8fa;
  --surface-mist:#eef2f4;
  --shadow-soft:0 18px 50px rgba(11,11,12,.075);
  --shadow-lift:0 28px 80px rgba(11,11,12,.14);
  --radius-lg:24px;
  --radius-md:18px;
  --radius-sm:12px;
}

body{
  background:
    radial-gradient(900px 520px at 50% -220px,rgba(214,224,228,.42),transparent 70%),
    linear-gradient(180deg,#fff 0%,#fbfcfd 48%,#f6f7f8 100%);
}

.site-header{
  border-bottom:1px solid rgba(11,11,12,.12);
  box-shadow:0 10px 30px rgba(11,11,12,.045);
}
.nav{
  padding-top:10px;
  padding-bottom:10px;
}
.brand-logo{
  transition:transform .35s var(--ease),opacity .35s var(--ease);
}
.brand:hover .brand-logo{transform:translateY(-1px);opacity:.88}
.nav-links{
  background:rgba(255,255,255,.72);
  border:1px solid rgba(11,11,12,.08);
  border-radius:999px;
  padding:4px;
  box-shadow:0 8px 24px rgba(11,11,12,.04);
}
.nav-links a{
  border-radius:999px;
  transition:background .25s var(--ease),color .25s var(--ease),transform .25s var(--ease);
}
.nav-links a:hover,.nav-links a:focus-visible{
  background:#f0f2f4;
  transform:translateY(-1px);
}
.nav-links a::after{display:none}
.nav-links a.cta{
  border-radius:999px;
  box-shadow:inset 0 0 0 1px rgba(11,11,12,.06);
}

.hero{
  background:
    radial-gradient(780px 440px at 50% 22%,rgba(229,235,238,.8),transparent 76%),
    linear-gradient(180deg,#fff 0%,#f8fafb 100%);
}
.lab-frame::before{
  content:"";
  position:absolute;
  left:50%;top:50%;
  width:min(1040px,92vw);height:min(610px,72vh);
  transform:translate(-50%,-50%);
  border:1px solid rgba(11,11,12,.08);
  border-radius:32px;
  background:linear-gradient(180deg,rgba(255,255,255,.7),rgba(255,255,255,.32));
  box-shadow:0 30px 90px rgba(11,11,12,.08);
  pointer-events:none;
}
.hero-logo{
  padding:24px 30px 28px;
  border-radius:28px;
  background:rgba(255,255,255,.62);
  border:1px solid rgba(11,11,12,.07);
  box-shadow:0 24px 70px rgba(11,11,12,.075);
  backdrop-filter:blur(12px) saturate(125%);
}
.hero-kicker{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  margin-bottom:14px;
  font-family:var(--mono);
  font-size:10.5px;
  letter-spacing:.22em;
  text-transform:uppercase;
  color:#686c72;
}
.hero-title .ht-row{display:block}
.hero-title em{
  font-family:inherit;
  font-style:italic;
  color:#34363b;
}
.hero-divider{
  display:block;
  width:76px;height:1px;
  margin:22px auto 0;
  background:linear-gradient(90deg,transparent,#0b0b0c,transparent);
  opacity:.55;
}
.obj svg{
  transition:transform .35s var(--ease),filter .35s var(--ease);
}
.obj:hover svg{transform:translateY(-3px)}
.hud{
  border-radius:18px;
  background:rgba(255,255,255,.76);
  box-shadow:0 18px 48px rgba(11,11,12,.085);
  backdrop-filter:blur(10px) saturate(120%);
}
.enter-btn,.back-link{
  border-radius:999px;
  box-shadow:0 16px 38px rgba(11,11,12,.08);
}

.section{
  position:relative;
  background:transparent;
}
.section-inner{
  position:relative;
}
.section-head{
  margin-bottom:44px;
}
.section-head h2,.proj-section h2{
  letter-spacing:-.035em;
}
.section-head p{
  font-size:17px;
  line-height:1.75;
}
.rule{
  background:linear-gradient(90deg,var(--ink),rgba(11,11,12,.08),transparent);
}
.card-grid{
  gap:18px;
  border:0;
}
.card{
  border:1px solid rgba(11,11,12,.10);
  border-radius:var(--radius-lg);
  overflow:hidden;
  background:linear-gradient(180deg,#fff 0%,#fbfcfd 100%);
  box-shadow:var(--shadow-soft);
  transition:transform .35s var(--ease),box-shadow .35s var(--ease),border-color .35s var(--ease),background .35s var(--ease);
}
.card::after{
  height:3px;
  background:linear-gradient(90deg,#0b0b0c,rgba(11,11,12,.25));
}
.card:hover{
  transform:translateY(-8px);
  border-color:rgba(11,11,12,.22);
  box-shadow:var(--shadow-lift);
  background:#fff;
}
.card-media{
  border-bottom:1px solid rgba(11,11,12,.08);
  background:
    radial-gradient(circle at 50% 42%,rgba(255,255,255,.95),rgba(237,243,246,.78) 68%,#eef2f4 100%) !important;
}
.card h3{
  font-size:clamp(21px,2vw,25px);
  letter-spacing:-.025em;
}
.card .summary{
  line-height:1.72;
}
.card .tag,.app-tags span,.ex-chip,.nh-chip{
  border-radius:999px;
  background:#fff;
}
.card .explore{
  margin-top:auto;
  padding-top:4px;
}

.proj-hero{
  border-bottom:1px solid rgba(11,11,12,.12);
  background:
    radial-gradient(640px 340px at 82% 16%,rgba(211,224,229,.48),transparent 70%),
    linear-gradient(180deg,#fff 0%,#f7f9fa 100%);
}
.proj-hero h1{
  letter-spacing:-.045em;
}
.proj-hero .subtitle{
  line-height:1.55;
}
.proj-art,.exhibit,.nh-exhibit,.nh-panel,.nh-gallery,.nh-flow{
  border-color:rgba(11,11,12,.12);
  border-radius:var(--radius-lg);
  box-shadow:var(--shadow-soft);
}
.proj-art{
  background:linear-gradient(180deg,#fff,#f8fafb);
}
.proj-body{
  max-width:900px;
}
.proj-section{
  padding:2px 0;
}
.proj-section > p{
  line-height:1.78;
}
.spec-list,.feature-grid{
  border-color:rgba(11,11,12,.10);
}
.spec-list li{
  padding:18px 6px 18px 0;
}
.feature-grid{
  gap:12px;
  background:transparent;
  border:0;
}
.feature-grid .f,.pathway .step{
  border:1px solid rgba(11,11,12,.10);
  border-radius:var(--radius-md);
  box-shadow:0 14px 38px rgba(11,11,12,.055);
}
.pathway{
  gap:12px;
}
.pathway .step{
  border-right:1px solid rgba(11,11,12,.10);
}
.pathway .step .arrow{display:none}

.site-footer{
  border-top:1px solid rgba(11,11,12,.12);
  background:linear-gradient(180deg,#f8f9fa,#fff);
}
.footer-inner,.footer-base{
  border-color:rgba(11,11,12,.08);
}

@media(max-width:760px){
  .nav-links{gap:2px;padding:3px}
  .lab-frame::before{border-radius:22px;height:600px}
  .hero-logo{padding:20px 18px 22px;border-radius:22px}
  .card-grid{grid-template-columns:1fr;gap:16px}
  .card{border-radius:20px}
}

/* robotic project visual update */
.central-hero__panel--robotic .central-hero__illustration{animation:roboticFloat 6.5s ease-in-out infinite;}
.robotic-hero__arm{transform-box:fill-box;transform-origin:center;animation:roboticArmFloat 7.5s ease-in-out infinite;}
.robotic-hero__upper{transform-box:fill-box;transform-origin:35% 80%;animation:roboticUpperMove 5.8s ease-in-out infinite;}
.robotic-hero__fore{transform-box:fill-box;transform-origin:15% 50%;animation:roboticForeMove 5.8s ease-in-out infinite;}
.robotic-hero__tool{transform-box:fill-box;transform-origin:50% 0%;animation:roboticToolMove 3.8s ease-in-out infinite;}
.robotic-hero__scan{animation:roboticScan 2.6s ease-in-out infinite;}
.robotic-hero__ring--outer{animation:ringRotate 26s linear infinite;transform-box:fill-box;transform-origin:center;}
.robotic-hero__ring--middle{animation:ringPulse 4.8s ease-in-out infinite;}
.robotic-hero__nodes circle{animation:nodeFloat 5s ease-in-out infinite;}
.robotic-hero__nodes circle:nth-child(2){animation-delay:.5s}.robotic-hero__nodes circle:nth-child(3){animation-delay:1s}.robotic-hero__nodes circle:nth-child(4){animation-delay:1.5s}
.robotic-hero__orbital{position:absolute;z-index:5;color:var(--ink);width:72px;height:72px;border:1px solid var(--line);background:rgba(255,255,255,.88);backdrop-filter:blur(10px);display:grid;place-items:center;box-shadow:0 24px 44px -34px rgba(11,11,12,.5);}
.robotic-hero__orbital--one{right:8%;top:12%;animation:roboticIconFloatOne 6s ease-in-out infinite;}
.robotic-hero__orbital--two{left:8%;bottom:16%;animation:roboticIconFloatTwo 7s ease-in-out infinite;}
.robotic-hero__orbital--three{right:16%;bottom:9%;animation:roboticIconFloatThree 8s ease-in-out infinite;}
@keyframes roboticFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-12px)}}
@keyframes roboticArmFloat{0%,100%{transform:translate(0,0) rotate(0)}50%{transform:translate(0,-7px) rotate(-1.5deg)}}
@keyframes roboticUpperMove{0%,100%{transform:rotate(0)}50%{transform:rotate(-2.8deg)}}
@keyframes roboticForeMove{0%,100%{transform:rotate(0)}50%{transform:rotate(3.2deg)}}
@keyframes roboticToolMove{0%,100%{transform:translateY(0)}50%{transform:translateY(8px)}}
@keyframes roboticScan{0%,100%{opacity:.28;transform:translateX(0)}50%{opacity:1;transform:translateX(-12px)}}
@keyframes ringRotate{to{transform:rotate(360deg)}}
@keyframes ringPulse{0%,100%{opacity:.45}50%{opacity:1}}
@keyframes nodeFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}
@keyframes roboticIconFloatOne{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-14px) rotate(4deg)}}
@keyframes roboticIconFloatTwo{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(12px) rotate(-5deg)}}
@keyframes roboticIconFloatThree{0%,100%{transform:translateY(0) rotate(0)}50%{transform:translateY(-10px) rotate(6deg)}}
@media(max-width:720px){.robotic-hero__orbital{width:58px;height:58px}.robotic-hero__orbital svg{width:48px;height:48px}}

/* ============================================================
   DEPLOY POLISH — layout refinements (additive, non-breaking)
   ============================================================ */

/* Long brand name in the footer wraps gracefully instead of overflowing */
.footer-inner h4{
  font-size:clamp(11px,1.1vw,12px);
  line-height:1.5;
  max-width:30ch;
  text-wrap:balance;
}

/* Tighter, more even footer column rhythm on large screens */
@media(min-width:900px){
  .footer-inner{grid-template-columns:1.6fr 1fr;align-items:start}
}

/* Project body: consistent reading measure + steadier vertical rhythm */
.proj-body{
  margin-inline:auto;
  padding-inline:var(--pad);
}
.proj-section{position:relative}
.proj-section + .proj-section{padding-top:clamp(8px,2vw,20px)}

/* Hero stat cards: even heights and graceful collapse on narrow screens */
.central-hero__stat{display:flex;flex-direction:column;justify-content:flex-start}
@media(max-width:560px){
  .central-hero__stats{grid-template-columns:1fr;gap:10px}
  .central-hero__stat{min-height:0;padding:14px 16px}
  .central-hero__actions .central-hero__btn{flex:1 1 100%;min-width:0}
}

/* Card grid: a touch more breathing room at mid widths */
@media(min-width:641px) and (max-width:1100px){
  .card{padding:26px 24px 24px}
}

/* Nav wraps cleanly rather than crowding on small screens */
@media(max-width:520px){
  .nav{flex-wrap:wrap;gap:12px}
  .nav-links{flex-wrap:wrap;justify-content:flex-start}
}

/* Back link gets clearer separation from the content above it */
.back-link{margin-top:clamp(28px,5vw,52px)}

/* Respect reduced-motion preferences for the many ambient animations */
@media(prefers-reduced-motion:reduce){
  *,*::before,*::after{
    animation-duration:.001ms !important;
    animation-iteration-count:1 !important;
    transition-duration:.001ms !important;
    scroll-behavior:auto !important;
  }
  body{opacity:1 !important}
  .reveal{opacity:1 !important;transform:none !important}
}

/* ============================================================
   HERO UPDATE — surgical-robot image + scroll-hint collision fix
   ============================================================ */

/* Scroll hint no longer overlaps the stat cards: pull it into normal
   flow beneath the hero content instead of pinning it to the bottom. */
.hero--redesigned{padding-bottom:clamp(48px,8vh,88px)}
.hero--redesigned .central-hero__scroll{
  position:static;
  left:auto;bottom:auto;
  transform:none;
  display:block;
  width:100%;
  text-align:center;
  margin:clamp(26px,4.5vh,46px) auto 0;
}

/* Central illustration is now the Oral & Maxillofacial surgical robot.
   It keeps floating via the existing panel animation. */
.central-hero__robot{
  inset:14%;
  width:72%;height:72%;
  object-fit:contain;
  filter:saturate(0) contrast(1.02);
  z-index:2;
}
@media(max-width:760px){
  .central-hero__robot{inset:16%;width:68%;height:68%}
}