/* Design tokens. Change --accent to recolour links, markers and rules together. */
:root{
    --paper:#FFFFFF;
    --paper-2:#EFF4FD;
    --ink:#0E1B3D;
    --ink-soft:#5B6B8C;
    --rule:#C9D6EC;
    --rule-soft:#E2EAF7;
    --accent:#1B3FCC;

    --display:"Gentium Book Plus","Noto Serif",Georgia,serif;
    --body:"IBM Plex Sans","Noto Sans",system-ui,-apple-system,sans-serif;
    --mono:"IBM Plex Mono","Noto Sans Mono",ui-monospace,monospace;

    --gutter:clamp(20px,5vw,64px);
    --label-col:180px;
    --bar:46px;
  }

/* Reset, typography defaults, links, page wash, skip link. */
*{box-sizing:border-box}
  html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:calc(var(--bar) + 24px)}
  @media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
  body{
    margin:0;background:var(--paper);color:var(--ink);
    font-family:var(--body);font-size:17px;line-height:1.6;
    -webkit-font-smoothing:antialiased;
  }
  body::before{
    content:"";position:absolute;inset:0 0 auto 0;height:660px;z-index:-1;
    background:linear-gradient(180deg,#EDF3FD 0%,#F6F9FE 46%,#FFFFFF 100%);
  }
  ::selection{background:var(--accent);color:#fff}

  a{color:var(--accent);text-decoration:none;border-bottom:1px solid rgba(27,63,204,.28);transition:border-color .18s,color .18s}
  a:hover{border-bottom-color:var(--accent)}
  a:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}

  .wrap{max-width:1080px;margin:0 auto;padding:0 var(--gutter)}

  .skip{position:absolute;left:-9999px}
  .skip:focus{left:var(--gutter);top:8px;z-index:20;background:var(--ink);color:var(--paper);padding:8px 14px;border:0}

/* Sticky index bar, section grid, hero. */

  .bar{
    position:sticky;top:0;z-index:10;height:var(--bar);
    background:rgba(255,255,255,.86);backdrop-filter:blur(10px);
    border-bottom:1px solid var(--rule-soft);
  }
  .bar .wrap{height:100%;display:flex;align-items:center;justify-content:space-between;gap:20px}
  .bar .who{font-family:var(--display);font-size:17px;white-space:nowrap}
  .bar nav{display:flex;gap:22px;overflow-x:auto;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  .bar nav::-webkit-scrollbar{display:none}
  .bar nav a{
    font-family:var(--mono);font-size:11px;letter-spacing:.13em;text-transform:uppercase;
    color:var(--ink-soft);border-bottom:0;white-space:nowrap;padding:4px 0;
  }
  .bar nav a:hover{color:var(--accent)}
  @media (max-width:640px){ .bar .who{display:none} .bar nav{justify-content:flex-start;width:100%} }

  
  .gloss{
    display:grid;grid-template-columns:var(--label-col) 1fr;gap:0 44px;
    padding:44px 0;border-top:1px solid var(--rule);
  }
  .gloss.tight{padding:34px 0}
  .glabel{
    font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
    color:var(--ink-soft);padding-top:8px;line-height:1.75;
  }
  .glabel b{display:block;color:var(--ink);font-weight:500}
  .gbody > * + *{margin-top:1.05em}
  .gbody p{margin:0;max-width:62ch}
  .lead{font-size:19px}

  h2.sec{font-family:var(--display);font-weight:400;font-size:clamp(27px,3.5vw,36px);line-height:1.13;margin:0 0 10px;letter-spacing:-.012em;max-width:20ch}

  
  header.hero{padding:clamp(40px,7vw,84px) 0 6px}
  .place{font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-soft)}
  h1{
    font-family:var(--display);font-weight:400;
    font-size:clamp(48px,10vw,102px);line-height:.95;letter-spacing:-.015em;margin:24px 0 0;
  }
  h1 .given{display:block;color:var(--ink-soft);font-size:.32em;letter-spacing:.02em;line-height:1.2;margin-bottom:.6em;font-family:var(--body);font-weight:400}
  .statement{font-family:var(--display);font-size:clamp(21px,2.6vw,29px);line-height:1.38;max-width:32ch;margin:34px 0 0}
  .statement em{font-style:italic;color:var(--accent)}

/* Spectrum figure, tracks, strands, publications, dated lines, toolkit, contact, footer. */

  .spectrum{margin:clamp(42px,6.5vw,72px) 0 0;padding-bottom:48px}
  .spectrum figcaption{font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-soft);margin-bottom:20px}
  .spectrum svg{width:100%;height:auto;display:block;overflow:visible}
  .sp-name{font-family:var(--display);font-size:23px;fill:var(--ink)}
  .sp-name.is-low{fill:var(--accent)}
  .sp-meta{font-family:var(--mono);font-size:12px;fill:var(--ink-soft)}
  .sp-tick{stroke:var(--rule);stroke-width:1.4}
  .sp-axis{stroke:var(--ink);stroke-width:1.4}
  .sp-dot-low{fill:var(--accent)}
  .sp-dot-high{fill:var(--ink)}
  .sp-note{font-family:var(--mono);font-size:12px;color:var(--ink-soft);margin-top:24px;max-width:62ch;line-height:1.75}

  
  .tracks{display:grid;grid-template-columns:1fr 1fr;gap:0 48px}
  .track{padding-top:22px;border-top:2px solid var(--ink)}
  .track:last-child{border-top-color:var(--accent)}
  .track .kind{font-family:var(--mono);font-size:11px;letter-spacing:.14em;text-transform:uppercase;color:var(--ink-soft);margin:0 0 10px}
  .track h3{font-family:var(--display);font-weight:400;font-size:24px;line-height:1.2;margin:0 0 10px}
  .track p{font-size:16px;color:var(--ink-soft);margin:0}
  @media (max-width:760px){.tracks{grid-template-columns:1fr;gap:30px}}

  
  .strand + .strand{margin-top:26px;padding-top:26px;border-top:1px solid var(--rule-soft)}
  .strand h3{font-family:var(--display);font-weight:400;font-size:21px;margin:0 0 6px}
  .strand p{margin:0;color:var(--ink-soft);max-width:60ch}
  .strand p b{color:var(--ink);font-weight:500}

  
  ol.pubs{list-style:none;margin:0;padding:0}
  ol.pubs li{padding:24px 0;border-top:1px solid var(--rule-soft)}
  ol.pubs li:first-child{border-top:none;padding-top:0}
  .pub-title{font-family:var(--display);font-size:22px;line-height:1.26;margin:0 0 10px;max-width:50ch}
  .pub-title a{color:var(--ink);border-bottom:1px solid var(--rule)}
  .pub-title a:hover{color:var(--accent);border-bottom-color:var(--accent)}
  .pub-meta{font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);display:flex;flex-wrap:wrap;gap:7px 14px;align-items:baseline}
  .venue{color:var(--ink);border:1px solid var(--rule);padding:2px 8px;border-radius:2px;background:var(--paper-2)}
  .pub-note{margin:11px 0 0;font-size:15.5px;color:var(--ink-soft);max-width:58ch}
  .subhead{
    font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;
    color:var(--ink-soft);margin:40px 0 20px;padding-top:20px;border-top:1px solid var(--rule);
  }

  
  .line{display:grid;grid-template-columns:118px 1fr;gap:0 26px;padding:15px 0;border-top:1px solid var(--rule-soft)}
  .line:first-child{border-top:none;padding-top:0}
  .line .when{font-family:var(--mono);font-size:12.5px;color:var(--ink-soft);padding-top:4px}
  .line .what{margin:0}
  .line .what strong{font-family:var(--display);font-weight:400;font-size:19px;display:block;line-height:1.3;margin-bottom:2px}
  .line .what span{font-size:15.5px;color:var(--ink-soft)}
  .line .what span b{color:var(--ink);font-weight:500}
  .line .stack{font-family:var(--mono);font-size:11.5px;color:var(--ink-soft);letter-spacing:.02em;display:block;margin-top:5px}

  
  .kit div{display:grid;grid-template-columns:132px 1fr;gap:0 24px;padding:13px 0;border-top:1px solid var(--rule-soft)}
  .kit div:first-child{border-top:none;padding-top:0}
  .kit dt{font-family:var(--mono);font-size:11.5px;letter-spacing:.11em;text-transform:uppercase;color:var(--ink-soft);padding-top:4px}
  .kit dd{margin:0;font-size:16px}

  
  ul.links{list-style:none;margin:0;padding:0;display:grid;gap:11px}
  ul.links span{font-family:var(--mono);font-size:11.5px;letter-spacing:.13em;text-transform:uppercase;color:var(--ink-soft);display:inline-block;min-width:96px}

  footer{border-top:1px solid var(--rule);margin-top:26px;padding:32px 0 72px;font-family:var(--mono);font-size:11.5px;letter-spacing:.1em;text-transform:uppercase;color:var(--ink-soft);line-height:2}

/* The line connecting the two current tracks. */
.bridge{color:var(--ink-soft);font-size:16px;padding-top:8px}

/* First strand sits under a heavier rule to separate it from the section lead. */
.strand-first{margin-top:32px;padding-top:30px;border-top:1px solid var(--rule)}

/* Contact lead wraps earlier than the research lead. */
.lead-narrow{max-width:44ch}
.links{margin-top:26px}

/* 404 page. */
.notfound{min-height:78vh;display:flex;flex-direction:column;justify-content:center}
.nf-title{font-family:var(--display);font-weight:400;font-size:clamp(38px,7vw,68px);line-height:1;margin:20px 0 0;letter-spacing:-.015em}
.nf-msg{font-family:var(--display);font-size:21px;line-height:1.4;max-width:34ch;margin:24px 0 32px;color:var(--ink-soft)}

/* Entrance animations. All disabled under prefers-reduced-motion. */

  .rise{opacity:0;transform:translateY(10px);animation:rise .7s cubic-bezier(.2,.7,.3,1) forwards}
  @keyframes rise{to{opacity:1;transform:none}}
  .d1{animation-delay:.04s}.d2{animation-delay:.15s}.d3{animation-delay:.27s}.d4{animation-delay:.4s}
  #axis-group{clip-path:inset(0 100% 0 0);animation:wipe 1.15s .55s cubic-bezier(.3,.8,.3,1) forwards}
  @keyframes wipe{to{clip-path:inset(0 -2% 0 0)}}
  @media (prefers-reduced-motion:reduce){
    .rise{opacity:1;transform:none;animation:none}
    #axis-group{clip-path:none;animation:none}
  }

/* Narrow-viewport overrides. */

  @media (max-width:760px){
    body{font-size:16px}
    .gloss,.gloss.tight{grid-template-columns:1fr;gap:16px;padding:32px 0}
    .glabel{padding-top:0}
    .line{grid-template-columns:1fr;gap:5px;padding:18px 0}
    .line .when{padding-top:0}
    .kit div{grid-template-columns:1fr;gap:4px}
    .kit dt{padding-top:0}
    .sp-name{font-size:32px}
    .sp-meta{font-size:15px}
    ul.links span{display:block;min-width:0}
  }

/* Strips chrome so Cmd/Ctrl+P yields a clean CV-style PDF. */

  @media print{
    .bar,.spectrum,footer{display:none}
    body::before{display:none}
    body{background:#fff;color:#000;font-size:11pt}
    a{color:#000;border:0}
    .gloss{break-inside:avoid;border-top:1px solid #999}
    .rise{opacity:1;transform:none;animation:none}
  }