:root{
  --paper:#FAFAF6;
  --ink:#1A2740;
  --muted:#5A6B85;
  --accent:#11A05A;
  --hairline:#E2E4DB;
  --card:#FFFFFF;
}
html[data-theme="dark"]{
  --paper:#0F1626;
  --ink:#E8ECF4;
  --muted:#8FA0BD;
  --accent:#2BBF74;
  --hairline:#243049;
  --card:#161F33;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  background:var(--paper);
  background-image:radial-gradient(rgba(26,39,64,.05) 1px,transparent 1px);
  background-size:26px 26px;
  color:var(--ink);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  font-size:17px;
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
html[data-theme="dark"] body{background-image:radial-gradient(rgba(232,236,244,.05) 1px,transparent 1px)}
::selection{background:rgba(17,160,90,.22)}
.wrap{max-width:1020px;margin:0 auto;padding:0 24px}

/* header */
header{
  position:sticky;top:0;z-index:20;
  border-bottom:1px solid var(--hairline);
  background:rgba(250,250,246,.88);
  backdrop-filter:blur(10px);
  -webkit-backdrop-filter:blur(10px);
}
.hrow{
  display:flex;justify-content:space-between;align-items:center;
  padding-top:18px;padding-bottom:18px;
}
html[data-theme="dark"] header{background:rgba(15,22,38,.88)}
header.scrolled{box-shadow:0 6px 20px rgba(26,39,64,.08)}
.logo{
  font-family:'Archivo',sans-serif;font-weight:900;font-size:19px;
  letter-spacing:-.02em;line-height:1;
  color:var(--ink);text-decoration:none;
}
.logo b{color:var(--accent)}
#progress{position:fixed;top:0;left:0;height:2px;width:0;background:var(--accent);z-index:40}
.skip{
  position:absolute;left:-9999px;top:0;z-index:30;
  background:var(--ink);color:var(--paper);padding:10px 16px;
  font-family:'IBM Plex Mono',monospace;font-size:13px;text-decoration:none;
  border-radius:0 0 6px 0;
}
.skip:focus{left:0}
nav{display:flex;align-items:center}
nav a{
  font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);
  text-decoration:none;margin-left:22px;letter-spacing:.04em;
  transition:color .15s ease;
  position:relative;
}
nav a::after{
  content:"";position:absolute;left:0;right:0;bottom:-5px;height:1.5px;
  background:var(--accent);transform:scaleX(0);transform-origin:left;
  transition:transform .2s ease;
}
nav a:hover::after,nav a.active::after{transform:scaleX(1)}
nav a:hover,nav a:focus-visible,nav a.active{color:var(--accent)}
a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.theme-toggle{
  margin-left:22px;width:32px;height:32px;
  display:inline-flex;align-items:center;justify-content:center;
  background:none;border:1px solid var(--hairline);border-radius:6px;
  color:var(--muted);cursor:pointer;
  transition:color .15s ease,border-color .15s ease;
}
.theme-toggle:hover,.theme-toggle:focus-visible{color:var(--accent);border-color:var(--accent)}
.theme-toggle svg{width:15px;height:15px;display:block}
.theme-toggle .sun{display:none}
html[data-theme="dark"] .theme-toggle .sun{display:block}
html[data-theme="dark"] .theme-toggle .moon{display:none}

/* hero */
.hero{
  display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center;
  padding:76px 0 64px;
}
.eyebrow{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--accent);margin-bottom:18px;
}
h1{
  font-family:'Archivo',sans-serif;font-weight:900;
  font-size:clamp(2.6rem,6vw,4.2rem);line-height:1.02;letter-spacing:-.02em;
}
h1 .hl{background:linear-gradient(transparent 66%,rgba(17,160,90,.28) 66%)}
.hero p.lede{
  margin-top:22px;font-size:1.13rem;max-width:34em;color:var(--ink);
}
.hero p.lede em{font-style:normal;border-bottom:2px solid var(--accent)}
.badge{
  display:inline-flex;align-items:center;gap:8px;margin-top:26px;
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;letter-spacing:.03em;
  color:var(--ink);background:var(--card);border:1px solid var(--hairline);
  border-radius:999px;padding:8px 16px;
}
.badge .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);flex:none;position:relative}
.cta-row{margin-top:30px;display:flex;flex-wrap:wrap;gap:12px}
.btn{
  font-family:'IBM Plex Mono',monospace;font-size:13.5px;text-decoration:none;
  padding:11px 20px;border-radius:6px;letter-spacing:.02em;
  transition:transform .15s ease,box-shadow .15s ease,background .15s ease,color .15s ease,border-color .15s ease;
}
.btn:hover{transform:translateY(-1px);box-shadow:0 4px 14px rgba(26,39,64,.14)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:#243450}
html[data-theme="dark"] .btn-primary{background:var(--accent);color:#08101F}
html[data-theme="dark"] .btn-primary:hover{background:#25A765}
.btn-ghost{color:var(--ink);border:1px solid var(--hairline);background:var(--card)}
.btn-ghost:hover{border-color:var(--accent);color:var(--accent)}

/* pose svg */
.pose{width:100%;max-width:340px;margin:0 auto;display:block}
.pose line{
  stroke:var(--ink);stroke-width:1.4;opacity:.55;
  stroke-dasharray:200;stroke-dashoffset:200;
  animation:draw 1.6s ease forwards;
}
.pose circle{
  fill:var(--accent);opacity:0;
  animation:pop .5s ease forwards;
  transform-box:fill-box;transform-origin:center;
  transition:transform .15s ease;
}
.pose circle:hover{transform:scale(1.6)}
.pose .kp-label{
  font-family:'IBM Plex Mono',monospace;font-size:8.5px;fill:var(--muted);
  opacity:0;animation:pop .5s ease 1.9s forwards;
}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{to{opacity:1}}
@media (prefers-reduced-motion:reduce){
  .pose line{animation:none;stroke-dashoffset:0}
  .pose circle,.pose .kp-label{animation:none;opacity:1}
}
@media (prefers-reduced-motion:no-preference){
  .reveal{opacity:0;transform:translateY(16px);transition:opacity .55s ease,transform .55s ease}
  .reveal.in{opacity:1;transform:none}
  .hero .eyebrow,.hero h1,.hero .lede,.hero .badge,.hero .cta-row{
    opacity:0;transform:translateY(12px);animation:rise .6s ease forwards;
  }
  .hero h1{animation-delay:.08s}
  .hero .lede{animation-delay:.16s}
  .hero .badge{animation-delay:.24s}
  .hero .cta-row{animation-delay:.32s}
  .badge .dot::after{
    content:"";position:absolute;inset:0;border-radius:50%;
    background:var(--accent);animation:ping 2.4s ease-out infinite;
  }
  .pose{animation:float 7s ease-in-out 2.4s infinite}
}
@keyframes rise{to{opacity:1;transform:none}}
@keyframes ping{0%{transform:scale(1);opacity:.55}70%,100%{transform:scale(2.6);opacity:0}}
@keyframes float{0%,100%{transform:translateY(0)}50%{transform:translateY(-8px)}}

/* vision mode (press v) */
body.vision [data-cv]{
  outline:1.5px solid #FF3B30;outline-offset:3px;
  position:relative;
}
body.vision [data-cv]::after{
  content:attr(data-cv);
  position:absolute;top:-22px;left:-2px;z-index:6;
  background:#FF3B30;color:#fff;
  font-family:'IBM Plex Mono',monospace;font-size:9.5px;font-weight:500;
  line-height:1;padding:4px 7px;border-radius:3px;letter-spacing:.04em;
  white-space:nowrap;pointer-events:none;
}

/* sections */
section{padding:56px 0;border-top:1px solid var(--hairline);scroll-margin-top:76px}
.sec-head{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--muted);margin-bottom:34px;
}
.sec-head b{color:var(--accent);font-weight:500}

/* inner pages */
.page{padding:64px 0 12px}
.page h1{font-size:clamp(2rem,4.5vw,3rem)}
.page p.lede{margin-top:16px;font-size:1.08rem;color:var(--muted);max-width:40em}

/* article */
.article{max-width:46em;padding:56px 0 24px}
.article .meta{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);letter-spacing:.06em;margin-bottom:20px}
.article h1{font-size:clamp(1.9rem,4.5vw,2.7rem);line-height:1.12}
.article h2{font-family:'Archivo',sans-serif;font-weight:700;font-size:1.35rem;letter-spacing:-.01em;margin-top:44px}
.article p{margin-top:16px}
.article ul,.article ol{margin-top:14px;padding-left:26px}
.article li{margin-top:8px}
.article code{
  font-family:'IBM Plex Mono',monospace;font-size:.85em;
  background:var(--card);border:1px solid var(--hairline);
  border-radius:4px;padding:2px 6px;
}
.article table{border-collapse:collapse;margin-top:18px;width:100%;font-size:.93em}
.article th,.article td{border:1px solid var(--hairline);padding:8px 12px;text-align:left}
.article th{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.article .callout{
  background:var(--card);border:1px solid var(--hairline);border-left:4px solid var(--accent);
  border-radius:8px;padding:18px 22px;margin-top:22px;
}
.article .backlink{margin-top:44px}

/* publication card */
.pub{
  background:var(--card);border:1px solid var(--hairline);border-left:4px solid var(--accent);
  border-radius:8px;padding:34px 38px;
  box-shadow:0 1px 2px rgba(26,39,64,.05),0 10px 30px rgba(26,39,64,.06);
}
.pub h2{font-family:'Archivo',sans-serif;font-weight:700;font-size:1.5rem;line-height:1.25;letter-spacing:-.01em}
.pub .venue{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);margin-top:10px}
.pub p{margin-top:16px;max-width:46em}
.stats{display:flex;flex-wrap:wrap;gap:34px;margin-top:24px}
.stat .n{font-family:'Archivo',sans-serif;font-weight:900;font-size:1.6rem;color:var(--ink)}
.stat .l{font-family:'IBM Plex Mono',monospace;font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.pub .links{margin-top:26px}
.textlink{
  font-family:'IBM Plex Mono',monospace;font-size:13.5px;color:var(--accent);
  text-decoration:none;border-bottom:1px solid transparent;margin-right:24px;
}
.textlink:hover{border-bottom-color:var(--accent)}

/* projects */
.proj{
  display:grid;grid-template-columns:200px 1fr;gap:28px;
  padding:30px 18px;margin:0 -18px;border-radius:10px;
  border-bottom:1px solid var(--hairline);
  transition:background .2s ease;
}
.proj:hover{background:var(--card)}
.proj:last-child{border-bottom:none}
.proj .tag{font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);padding-top:5px}
.proj h3{font-family:'Archivo',sans-serif;font-weight:700;font-size:1.22rem;letter-spacing:-.01em}
.proj p{margin-top:10px;color:var(--ink);max-width:44em}
.proj .stack{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);margin-top:12px}
.proj .links{margin-top:12px}

/* timeline */
.tl{
  border-left:2px solid var(--hairline);
  margin-left:6px;padding-left:30px;
  display:flex;flex-direction:column;gap:28px;
}
.tl-item{position:relative;max-width:46em}
.tl-item::before{
  content:"";position:absolute;left:-37px;top:7px;
  width:10px;height:10px;border-radius:50%;background:var(--accent);
}
.tl-year{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.08em;
  color:var(--muted);margin-bottom:3px;
}
.tl-item b{font-weight:600}

/* stack / how I work */
.cols{display:grid;grid-template-columns:1fr 1fr;gap:44px}
.cols h4{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.pill-row{display:flex;flex-wrap:wrap;gap:9px}
.pill{
  font-family:'IBM Plex Mono',monospace;font-size:12.5px;
  border:1px solid var(--hairline);background:var(--card);
  border-radius:6px;padding:6px 12px;color:var(--ink);
}
.cols p{max-width:34em}
.cols .lang{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);margin-top:14px}

/* footer */
footer{
  background:var(--ink);border-radius:16px;
  padding:52px 44px 44px;margin:32px 0 56px;
  scroll-margin-top:76px;
}
html[data-theme="dark"] footer{background:#0A101D}
footer h2{font-family:'Archivo',sans-serif;font-weight:900;font-size:clamp(1.8rem,4vw,2.6rem);letter-spacing:-.02em;color:var(--paper)}
html[data-theme="dark"] footer h2{color:var(--ink)}
footer p{margin-top:14px;color:#AAB6CC;max-width:38em}
footer .btn-primary{background:var(--accent);color:#fff}
footer .btn-primary:hover{background:#0E8C4E}
html[data-theme="dark"] footer .btn-primary{background:var(--accent);color:#08101F}
html[data-theme="dark"] footer .btn-primary:hover{background:#25A765}
footer .btn-ghost{color:var(--paper);border-color:rgba(250,250,246,.25);background:transparent}
html[data-theme="dark"] footer .btn-ghost{color:var(--ink);border-color:rgba(232,236,244,.25)}
footer .btn-ghost:hover{border-color:var(--accent);color:var(--accent)}
.foot-links{margin-top:26px;display:flex;flex-wrap:wrap;gap:12px}
.fineprint{
  margin-top:52px;font-family:'IBM Plex Mono',monospace;font-size:12px;color:rgba(250,250,246,.55);
  display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px;
}
html[data-theme="dark"] .fineprint{color:rgba(232,236,244,.5)}

/* live demo */
.demo-sec{border-top:none;padding-top:24px}
.demo-grid{display:grid;grid-template-columns:1.4fr 1fr;gap:36px;align-items:start}
.demo-stage{
  position:relative;aspect-ratio:4/3;overflow:hidden;
  background:var(--card);border:1px solid var(--hairline);border-radius:10px;
  box-shadow:0 1px 2px rgba(26,39,64,.05),0 10px 30px rgba(26,39,64,.06);
}
.demo-stage video{display:none}
.demo-stage canvas{position:absolute;inset:0;width:100%;height:100%}
.stage-msg{
  position:absolute;inset:0;display:flex;flex-direction:column;
  align-items:center;justify-content:center;gap:18px;text-align:center;padding:24px;
}
.stage-msg[hidden]{display:none}
.stage-msg p{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);max-width:26em}
.demo-controls{display:flex;align-items:center;gap:18px;margin-top:14px;flex-wrap:wrap}
.demo-status,.demo-fps{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);letter-spacing:.04em}
.demo-fps{margin-left:auto;color:var(--accent)}
.demo-result h4{
  font-family:'IBM Plex Mono',monospace;font-size:12px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--muted);margin-bottom:14px;
}
.asana-name{font-family:'Archivo',sans-serif;font-weight:900;font-size:2rem;letter-spacing:-.02em;line-height:1.1;min-height:1.1em}
.asana-sub{font-family:'IBM Plex Mono',monospace;font-size:13px;color:var(--muted);margin-top:6px}
.conf-bar{height:6px;background:var(--hairline);border-radius:999px;margin-top:18px;overflow:hidden}
.conf-fill{height:100%;width:0;background:var(--accent);border-radius:999px;transition:width .25s ease}
.conf-label{font-family:'IBM Plex Mono',monospace;font-size:11.5px;color:var(--muted);margin-top:6px;min-height:1.4em}
.pose-chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:22px}
.chip{
  font-family:'IBM Plex Mono',monospace;font-size:12px;
  border:1px solid var(--hairline);background:var(--card);
  border-radius:6px;padding:5px 10px;color:var(--muted);
  transition:color .15s ease,border-color .15s ease;
}
.chip.active{color:var(--accent);border-color:var(--accent);font-weight:500}
.demo-hint{font-family:'IBM Plex Mono',monospace;font-size:12.5px;color:var(--muted);margin-top:26px;max-width:52em}

@media (max-width:760px){
  .hero{grid-template-columns:1fr;padding:52px 0 44px}
  .demo-grid{grid-template-columns:1fr}
  .pose{max-width:250px;order:-1}
  .proj{grid-template-columns:1fr;gap:8px}
  .cols{grid-template-columns:1fr}
  nav a{margin-left:14px}
  .theme-toggle{margin-left:14px}
  .pub{padding:26px 22px}
  .proj{padding:24px 14px;margin:0 -14px}
  footer{padding:36px 24px;border-radius:12px}
}