:root{--ink:#202020;--muted:#626262;--line:#dedede;--soft:#f6f6f6;--dark:#161616;--body:Arial,Helvetica,sans-serif}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px}
body{margin:0;background:#fff;color:var(--ink);font:16px/1.65 var(--body)}
a{color:inherit;text-underline-offset:4px}
a:hover{text-decoration:underline}
a:focus-visible,button:focus-visible{outline:2px solid #333;outline-offset:5px}
h1,h2,h3,h4,p{margin-top:0}
h1,h2,h3,h4{line-height:1.2;font-weight:500;letter-spacing:-.025em}
h1{font-size:clamp(40px,5.2vw,64px);margin-bottom:24px}
h2{font-size:clamp(28px,3vw,38px);margin-bottom:22px}
h3{font-size:25px;margin-bottom:18px}
h4{font-size:20px;margin-bottom:10px}
.skip{position:absolute;top:-100px;left:20px;background:white;padding:10px;z-index:5}
.skip:focus{top:10px}
.site-header,.hero,.work-wrap,.site-footer{width:min(100% - 64px,1120px);margin-inline:auto}
.site-header{min-height:84px;border-bottom:1px solid var(--line);display:flex;align-items:center;justify-content:space-between;gap:28px}
.identity{font-size:18px;font-weight:600;white-space:nowrap;text-decoration:none}
.site-header nav{display:flex;align-items:center;gap:24px;font-size:14px;flex-wrap:wrap}
.site-header nav a{text-decoration:none}
.site-header nav a:hover{text-decoration:underline}
.hero{padding-block:64px;display:grid;grid-template-columns:1fr 1.15fr;gap:48px;align-items:start}
.hero-media{display:grid;gap:28px;min-width:0}
.hero h1{font-size:clamp(36px,4vw,52px)}
.hero-intro{font-size:18px}
.featured-video{margin:0;min-width:0}
.featured-video .video-caption h2{font-size:20px;margin-bottom:7px}
.eyebrow,.label{font-size:14px;color:var(--muted);font-weight:400;margin-bottom:14px}
.hero-intro{font-size:19px;color:var(--muted);max-width:650px;margin-bottom:26px}
.text-link{font-size:15px;font-weight:500}
.project-section{padding-block:54px;border-top:1px solid var(--line)}
.project-heading{display:flex;align-items:baseline;justify-content:space-between;gap:40px;margin-bottom:28px}
.project-heading h2{margin:0}
.project-heading p{max-width:330px;color:var(--muted);margin:0}
.metrics{display:grid;grid-template-columns:repeat(3,1fr);gap:32px;margin-block:32px;padding-block:24px;border-block:1px solid var(--line)}
.metrics strong{display:block;font-size:28px;line-height:1.3;font-weight:500;letter-spacing:-.035em}
.metrics span{display:block;font-size:14px;color:var(--muted);line-height:1.5;margin-top:7px;max-width:255px}
.project-lead{font-size:18px;max-width:850px;margin-bottom:30px;color:var(--muted)}
.finger-video-grid,.media-reserve,.video-grid{display:grid;grid-template-columns:1fr 1fr;gap:28px;margin:0 0 36px}
.working-video-grid{grid-template-columns:1fr;max-width:720px}
.strength-feature{display:grid;grid-template-columns:minmax(0,320px) 1fr;gap:28px;align-items:center}
.strength-player{aspect-ratio:9/16;background:var(--dark)}
.finger-feature,.hand-film,.terrain-feature,.paper-figure{margin:0;min-width:0}
.process-gallery{margin-block:40px 48px}
.process-heading h3{margin-bottom:10px}
.process-heading p{color:var(--muted);font-size:15px;margin-bottom:24px}
.process-collage{columns:3;column-gap:16px}
.process-collage a{display:block;break-inside:avoid;margin-bottom:16px}
.process-collage img{display:block;width:100%;height:auto;background:var(--soft)}
.button.gallery-toggle{display:none;font-family:inherit;cursor:pointer;min-height:44px;margin-bottom:16px}
.wide-player,.terrain-player,.video-frame{aspect-ratio:16/9;background:var(--dark);position:relative}
video,iframe{display:block;width:100%;height:100%;border:0;object-fit:contain}
.hand-player{height:430px;background:var(--dark)}
.video-caption,.hand-film figcaption{padding-top:16px;padding-bottom:8px}
.video-caption h3,.hand-film figcaption h3{font-size:20px;margin-bottom:7px}
.video-caption p,.film-description{font-size:15px;color:var(--muted);margin-bottom:0}
.video-caption .label,.hand-film figcaption .label{font-size:14px;margin-bottom:7px}
.video-caption a{display:inline-block;font-size:14px;margin-top:10px}
.hand-details{display:grid;grid-template-columns:1fr 1fr;gap:56px;margin-block:48px}
.hand-details article{border-top:1px solid var(--line);padding-top:24px}
.hand-details p:not(.label){color:var(--muted)}
.hand-details .note{font-size:14px;line-height:1.6;margin-top:24px}
.mechanism-details{display:grid;grid-template-columns:1fr 2fr;gap:48px;border-top:1px solid var(--line);padding-top:32px;margin-bottom:48px}
.mechanism-list article{padding-bottom:24px;margin-bottom:24px;border-bottom:1px solid var(--line)}
.mechanism-list article:last-child{border:0;margin:0;padding:0}
.mechanism-list p{color:var(--muted);margin:0}
.analysis-panel{display:grid;grid-template-columns:1.15fr 1fr;gap:48px;padding-top:36px;border-top:1px solid var(--line)}
.analysis-copy p:not(.label){color:var(--muted)}
.analysis-copy strong{font-weight:500;color:var(--ink)}
.action-group{display:flex;align-items:center;gap:24px;flex-wrap:wrap;margin-block:26px}
.button{display:inline-block;border:1px solid #aaa;padding:10px 16px;font-size:14px;text-decoration:none;background:#fff}
.button:hover{background:var(--soft);text-decoration:none}
.paper-title{font-size:14px;border-top:1px solid var(--line);padding-top:18px;margin-bottom:0}
.paper-figure{align-self:center}
.paper-window{aspect-ratio:1.2;overflow:hidden;border:1px solid var(--line)}
.paper-window img{display:block;width:100%;height:auto;margin-top:-10%}
.paper-figure figcaption{font-size:14px;color:var(--muted);line-height:1.5;margin-top:12px}
.terrain-feature{margin-bottom:32px}
.hex-video-grid{grid-template-columns:minmax(0,1fr);max-width:720px;margin-bottom:0}
.video-play{display:block;height:100%;position:relative;overflow:hidden}
.video-play img{display:block;width:100%;height:100%;object-fit:cover}
.video-label{position:absolute;left:12px;bottom:12px;background:white;padding:5px 9px;font-size:14px}
.about-layout{display:grid;grid-template-columns:1fr 1fr;gap:64px}
.about-intro{font-size:18px;color:var(--muted)}
.skill-tags{display:flex;flex-wrap:wrap;gap:8px 18px;margin-top:24px;color:var(--muted);font-size:14px}
.experience-list article{border-top:1px solid var(--line);padding-top:24px;margin-bottom:24px}
.experience-list article:last-child{margin-bottom:0}
.experience-list h3{font-size:22px;margin-bottom:12px}
.experience-list p:not(.label){color:var(--muted)}
.experience-list .label{margin-bottom:10px}
.contact-section{border-top:1px solid var(--line);padding-block:48px}
.contact-section>div{display:flex;align-items:center;justify-content:space-between;gap:24px;margin-bottom:12px}
.contact-section h2{margin:0}
.contact-links{display:flex;flex-wrap:wrap;gap:12px 28px;font-style:normal}
.contact-links a{font-size:16px;color:var(--muted)}
.site-footer{display:flex;justify-content:space-between;gap:20px;padding-block:24px;border-top:1px solid var(--line);font-size:14px;color:var(--muted)}
@media(max-width:900px){
  .site-header{padding-block:20px;align-items:flex-start;flex-wrap:wrap;gap:14px}
  .site-header nav{gap:12px 20px}
  .hero{padding-block:48px;grid-template-columns:1fr;gap:32px}
  .project-heading{display:block}
  .process-collage{columns:2}
  .project-heading p{max-width:none;margin-top:14px}
  .hand-details,.about-layout{gap:32px}
  .mechanism-details,.analysis-panel{grid-template-columns:1fr;gap:24px}
  .paper-figure{max-width:540px}
}
@media(max-width:600px){
  .site-header,.hero,.work-wrap,.site-footer{width:calc(100% - 40px)}
  .site-header nav{font-size:14px}
  .hero{padding-block:40px}
  .hero-intro,.project-lead,.about-intro{font-size:17px}
  .project-section{padding-block:36px}
  .metrics{grid-template-columns:1fr;gap:20px;margin-block:24px}
  .metrics>div{display:grid;grid-template-columns:110px 1fr;gap:16px;align-items:center}
  .metrics strong{font-size:25px}
  .metrics span{margin:0}
  .finger-video-grid,.media-reserve,.video-grid,.hand-details,.about-layout{grid-template-columns:1fr;gap:28px}
  .hand-details{margin-block:36px}
  .strength-feature{grid-template-columns:1fr;gap:0;max-width:360px}
  .process-collage{columns:2;column-gap:12px}
  .process-collage a{margin-bottom:12px}
  .gallery-toggle:not([hidden]){display:inline-flex;align-items:center}
  .gallery-collapsible[data-expanded="false"] .process-collage{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
  .gallery-collapsible[data-expanded="false"] .process-collage a{margin:0}
  .gallery-collapsible[data-expanded="false"] .process-collage a:nth-child(n+4){display:none}
  .gallery-collapsible[data-expanded="false"] .process-collage img{aspect-ratio:1;object-fit:cover}
  .hand-player{height:auto;aspect-ratio:480/852}
  .hand-player.cad-player{aspect-ratio:31/18}
  .contact-section>div{align-items:flex-start;flex-direction:column;gap:20px}
  .site-footer{flex-wrap:wrap}
  .site-footer>span:nth-child(2){display:none}
}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}