/* Layout: an engineering drawing sheet. Cool graph paper, hairline frames with registration marks,
   mono annotations; one 1120px column, two-column rows that stack on phones. */
:root{
  --paper:#F4F6F8; --surface:#FFFFFF; --ink:#0E1A2B; --muted:#566476;
  --line:#D6DDE5; --line-strong:#AEB9C6; --accent:#C2410C; --accent-soft:rgba(194,65,12,.10);
  --grid:rgba(14,26,43,.05); --mat:#FFFFFF; --video-mat:#0E1A2B; --on-accent:#FFFFFF; --header:rgba(244,246,248,.86);
  --f-display:"Archivo","Helvetica Neue",Arial,sans-serif;
  --f-body:"IBM Plex Sans",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
  --f-mono:"IBM Plex Mono",ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;
  --f-math:"IBM Plex Serif",Georgia,"Times New Roman",serif;
  --wrap:1120px;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0B131D; --surface:#111C29; --ink:#E4EAF1; --muted:#97A5B6;
    --line:#223142; --line-strong:#3B4C60; --accent:#FF7D45; --accent-soft:rgba(255,125,69,.14);
    --grid:rgba(228,234,241,.045); --mat:#EEF1F4; --video-mat:#05090F; --on-accent:#0B131D; --header:rgba(11,19,29,.84);
    color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0B131D; --surface:#111C29; --ink:#E4EAF1; --muted:#97A5B6;
  --line:#223142; --line-strong:#3B4C60; --accent:#FF7D45; --accent-soft:rgba(255,125,69,.14);
  --grid:rgba(228,234,241,.045); --mat:#EEF1F4; --video-mat:#05090F; --on-accent:#0B131D; --header:rgba(11,19,29,.84);
  color-scheme:dark;
}

*,*::before,*::after{box-sizing:border-box}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--paper);color:var(--ink);font-family:var(--f-body);font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img{max-width:100%;display:block}
a{color:inherit}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px}
.wrap{max-width:var(--wrap);margin-inline:auto;padding-inline:clamp(16px,4vw,40px)}
.eyebrow{font-family:var(--f-mono);font-size:.76rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0}
.eyebrow b{color:var(--accent);font-weight:500}

/* Header */
.site-header{position:sticky;top:env(safe-area-inset-top,0px);z-index:20;background:var(--header);
  -webkit-backdrop-filter:saturate(1.4) blur(10px);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:60px}
.brand{display:flex;align-items:center;gap:10px;text-decoration:none;font-family:var(--f-display);font-weight:650;font-stretch:112%;font-size:1rem;letter-spacing:.005em;white-space:nowrap}
.brand svg{width:36px;height:14px;flex:none}
.brand .mk-body{fill:var(--accent)}
.nav ul{display:flex;gap:clamp(14px,3vw,30px);list-style:none;margin:0;padding:0}
.nav ul a{font-family:var(--f-mono);font-size:.78rem;letter-spacing:.08em;text-transform:uppercase;text-decoration:none;color:var(--muted);padding-block:8px;display:block}
.nav ul a:hover{color:var(--ink)}
@media (max-width:560px){.brand-name{display:none}}
@media (max-width:480px){.nav-opt{display:none}}

/* Hero */
.hero{background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
  background-size:24px 24px;background-position:-1px -1px;border-bottom:1px solid var(--line);padding-block:clamp(40px,7vw,88px) 0}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(0,.6fr);gap:clamp(28px,6vw,80px);align-items:center}
h1{font-family:var(--f-display);font-weight:700;font-stretch:116%;font-size:clamp(2.3rem,6.4vw,4.8rem);line-height:.97;letter-spacing:-.018em;margin:.32em 0 .42em;text-wrap:balance}
.lead{font-size:clamp(1.06rem,1.6vw,1.24rem);line-height:1.55;color:var(--muted);max-width:52ch;margin:0}
.actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:30px}
.btn{display:inline-flex;align-items:center;gap:8px;font-family:var(--f-mono);font-size:.84rem;font-weight:500;letter-spacing:.04em;text-decoration:none;
  padding:12px 18px;border:1px solid var(--ink);color:var(--ink);background:transparent;cursor:pointer;transition:background-color .15s,color .15s,border-color .15s}
.btn:hover{background:var(--ink);color:var(--paper)}
.btn.primary{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
.btn.primary:hover{background:var(--ink);border-color:var(--ink);color:var(--paper)}
.creds{list-style:none;margin:38px 0 0;padding:0;border-top:1px solid var(--line);max-width:580px}
.creds li{display:grid;grid-template-columns:6.5rem minmax(0,1fr);gap:16px;padding-block:12px;border-bottom:1px solid var(--line);font-size:.96rem;line-height:1.45}
.creds .k{font-family:var(--f-mono);font-size:.74rem;font-weight:500;letter-spacing:.08em;text-transform:uppercase;color:var(--accent);padding-top:.2em}
.creds .sub{color:var(--muted)}

/* Framed figures with registration marks */
.frame{position:relative;border:1px solid var(--line-strong);background:var(--surface);padding:8px;margin:0}
.frame::before{content:"";position:absolute;inset:-6px;pointer-events:none;
  --m:linear-gradient(var(--accent),var(--accent));
  background:
    var(--m) top left/14px 1.5px no-repeat, var(--m) top left/1.5px 14px no-repeat,
    var(--m) top right/14px 1.5px no-repeat, var(--m) top right/1.5px 14px no-repeat,
    var(--m) bottom left/14px 1.5px no-repeat, var(--m) bottom left/1.5px 14px no-repeat,
    var(--m) bottom right/14px 1.5px no-repeat, var(--m) bottom right/1.5px 14px no-repeat}
.portrait img{width:100%;height:auto;aspect-ratio:4/5;object-fit:cover;object-position:50% 18%}
.fig-cap{font-family:var(--f-mono);font-size:.74rem;line-height:1.5;color:var(--muted);letter-spacing:.02em;margin-top:12px}
.fig-cap b{color:var(--ink);font-weight:500}

/* Airfoil drawing */
.airfoil{margin:clamp(36px,6vw,72px) 0 0;padding-bottom:26px}
.airfoil svg{width:100%;height:auto;display:block;overflow:visible}
.af-body{fill:var(--accent-soft);stroke:var(--ink);stroke-width:1.6;stroke-linejoin:round}
.af-chord{fill:none;stroke:var(--muted);stroke-width:1;stroke-dasharray:2 6}
.af-camber{fill:none;stroke:var(--accent);stroke-width:1.4;stroke-dasharray:7 5}
.af-dim{fill:none;stroke:var(--muted);stroke-width:1}
.af-head{fill:var(--muted)}
.af-pt{fill:var(--accent)}
.af-text{font-family:var(--f-mono);font-size:13px;fill:var(--muted);letter-spacing:.03em}
.af-title{font-family:var(--f-mono);font-size:14px;font-weight:500;fill:var(--ink);letter-spacing:.1em}
.af-knock{paint-order:stroke;stroke:var(--paper);stroke-width:6px;stroke-linejoin:round}
@media (max-width:640px){.af-text{display:none}.af-title{font-size:30px}}
@media (prefers-reduced-motion:no-preference){
  .af-body{stroke-dasharray:1;stroke-dashoffset:1;animation:af-draw 1.8s cubic-bezier(.6,.05,.3,1) .25s forwards}
  .af-camber,.af-chord{animation:af-fade .8s ease-out 1.2s both}
}
@keyframes af-draw{to{stroke-dashoffset:0}}
@keyframes af-fade{from{opacity:0}to{opacity:1}}

/* Sections */
.section{padding-block:clamp(60px,9vw,112px);border-bottom:1px solid var(--line);scroll-margin-top:60px}
.section-head{display:grid;gap:12px;margin-bottom:clamp(30px,4.5vw,52px)}
h2{font-family:var(--f-display);font-weight:700;font-stretch:112%;font-size:clamp(1.8rem,3.6vw,2.8rem);line-height:1.04;letter-spacing:-.012em;margin:0;max-width:24ch;text-wrap:balance}

/* About */
.about-grid{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(28px,6vw,80px);align-items:start}
.prose p{margin:0 0 1.05em;max-width:62ch}
.prose p.intro{font-size:clamp(1.12rem,1.7vw,1.3rem);line-height:1.5;color:var(--ink)}
.prose p:not(.intro){color:var(--muted)}
.areas{margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.areas ul{list-style:none;padding:0;margin:14px 0 0;display:flex;flex-wrap:wrap;gap:8px}
.areas li{font-family:var(--f-mono);font-size:.8rem;padding:7px 11px;border:1px solid var(--line-strong);background:var(--surface)}
.about-photo img{width:100%;height:auto;aspect-ratio:4/3;object-fit:cover;object-position:50% 40%}

/* Projects */
.project{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(26px,5vw,64px);align-items:start;
  padding-block:clamp(34px,5vw,60px);border-top:1px solid var(--line)}
.project:first-child{border-top:0;padding-top:0}
.project:last-child{padding-bottom:0}
.media{aspect-ratio:4/3;width:100%;overflow:hidden;background:var(--mat);display:grid;place-items:center}
.media img{width:100%;height:100%;object-fit:cover}
.media img.contain{object-fit:contain}
.media.video-mat{background:var(--video-mat)}
.media video{width:100%;height:100%;object-fit:contain;display:block}
.project h3{font-family:var(--f-display);font-weight:650;font-stretch:108%;font-size:clamp(1.36rem,2.4vw,1.8rem);line-height:1.14;letter-spacing:-.005em;margin:.45em 0 .55em;text-wrap:balance}
.project .desc{margin:0;max-width:62ch;color:var(--muted)}
.specs{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:28px;margin:26px 0 0;border-top:1px solid var(--line)}
.specs div{padding-block:11px;border-bottom:1px solid var(--line);min-width:0}
.specs dt{font-family:var(--f-mono);font-size:.7rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.specs dd{margin:3px 0 0;font-size:.95rem;line-height:1.45}
.links{display:flex;flex-wrap:wrap;gap:10px 26px;margin:22px 0 0;padding:0;list-style:none}
.links a{font-family:var(--f-mono);font-size:.84rem;font-weight:500;color:var(--accent);text-decoration:none;border-bottom:1px solid currentColor;padding-bottom:2px}
.links a:hover{color:var(--ink)}

/* Equation plate (UQ figure) */
.plate{background-color:var(--surface);
  background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);background-size:16px 16px;
  display:flex;flex-direction:column;justify-content:center;gap:clamp(14px,2.4vw,22px);padding:clamp(16px,6%,34px);place-items:stretch}
.eq{font-family:var(--f-math);font-style:italic;font-size:clamp(1.35rem,2.6vw,1.9rem);line-height:1.2;color:var(--ink);text-align:center;white-space:nowrap}
.eq .sum{font-style:normal;font-size:1.5em;vertical-align:-.12em;margin-inline:.08em}
.eq sub{font-size:.55em}
.eq .bf{font-weight:600}
.eq-note{font-family:var(--f-mono);font-size:.7rem;letter-spacing:.04em;color:var(--muted);text-align:center;margin:0}
.bars{display:grid;gap:8px;padding-top:14px;border-top:1px dashed var(--line-strong)}
.bars .lbl{font-family:var(--f-mono);font-size:.68rem;letter-spacing:.09em;text-transform:uppercase;color:var(--muted)}
.bar-row{display:grid;grid-template-columns:2rem minmax(0,1fr) 2.4rem;align-items:center;gap:10px;font-family:var(--f-mono);font-size:.74rem;color:var(--muted);font-variant-numeric:tabular-nums}
.bar-row .v{text-align:right;color:var(--ink)}
.bar{display:block;height:10px;width:calc(var(--v) / 51 * 100%);background:var(--accent)}
.bar.lf{background:var(--ink);opacity:.72}

/* Skills */
.skills-grid{display:grid;grid-template-columns:minmax(0,5fr) minmax(0,7fr);gap:clamp(30px,6vw,80px)}
.group-label{font-family:var(--f-mono);font-size:.74rem;font-weight:500;letter-spacing:.09em;text-transform:uppercase;color:var(--muted);margin:0 0 14px}
.skill-list{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.skill-list li{padding-block:13px;border-bottom:1px solid var(--line);display:flex;align-items:baseline;gap:14px}
.skill-list li::before{content:"";flex:none;width:7px;height:7px;background:var(--accent);transform:translateY(-.1em)}
.tool-grid{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1px;background:var(--line);border:1px solid var(--line)}
.tool-grid li{background:var(--paper);padding:18px 16px;min-width:0}
.tool-grid .t{display:block;font-family:var(--f-display);font-weight:650;font-stretch:106%;font-size:1.05rem;line-height:1.2}
.tool-grid .c{display:block;font-family:var(--f-mono);font-size:.68rem;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);margin-top:6px}

/* Contact */
.contact{border-bottom:0}
.contact-grid{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:28px 48px;align-items:end}
.contact p.note{margin:16px 0 0;color:var(--muted);max-width:52ch}
.email-row{display:flex;flex-wrap:wrap;align-items:center;gap:14px 20px;margin-top:clamp(28px,4vw,40px)}
.email{font-family:var(--f-display);font-weight:650;font-stretch:106%;font-size:clamp(1.45rem,4.2vw,2.9rem);line-height:1.1;text-decoration:none;color:var(--ink);
  border-bottom:2px solid var(--accent);padding-bottom:4px;overflow-wrap:anywhere}
.email:hover{color:var(--accent)}

/* Footer title block */
.site-footer{padding-block:0 clamp(28px,4vw,44px)}
.titleblock{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:1.5px;background:var(--ink);border:1.5px solid var(--ink);margin:0}
.titleblock div{background:var(--paper);padding:10px 14px;min-width:0}
.titleblock dt{font-family:var(--f-mono);font-size:.64rem;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.titleblock dd{margin:2px 0 0;font-family:var(--f-mono);font-size:.86rem;font-weight:500;overflow-wrap:anywhere}
.copyright{font-family:var(--f-mono);font-size:.72rem;color:var(--muted);margin:14px 0 0;letter-spacing:.03em}

/* Publications */
.pubs{list-style:none;margin:0;padding:0;border-top:1px solid var(--line)}
.pub{display:grid;grid-template-columns:minmax(0,3fr) minmax(0,9fr);gap:12px 48px;padding-block:30px;border-bottom:1px solid var(--line)}
.pub-meta{margin:0;font-family:var(--f-mono);font-size:.76rem;line-height:1.7;letter-spacing:.07em;text-transform:uppercase;color:var(--muted)}
.pub-meta b{color:var(--accent);font-weight:500}
.pub-body{min-width:0}
.pub h3{font-family:var(--f-display);font-weight:650;font-size:clamp(1.15rem,2vw,1.4rem);line-height:1.25;margin:0 0 .45em;text-wrap:balance}
.pub-authors{margin:0;color:var(--muted)}
.pub-authors b{color:var(--ink);font-weight:600}
.pub-venue{margin:.25em 0 0;font-style:italic;color:var(--muted)}
.pub-summary{margin:.7em 0 0;max-width:62ch}
.pub .links{margin-top:14px}

/* Responsive */
@media (max-width:860px){
  .hero-grid,.about-grid,.project,.skills-grid,.contact-grid,.pub{grid-template-columns:minmax(0,1fr)}
  .portrait{max-width:300px;order:-1}
  .about-photo{max-width:560px}
  .project-fig{max-width:560px}
}
@media (max-width:560px){
  body{font-size:16px}
  h1{font-stretch:104%}
  .portrait{max-width:200px}
  .creds li{grid-template-columns:minmax(0,1fr);gap:2px}
  .specs{grid-template-columns:minmax(0,1fr)}
  .tool-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
  .titleblock{grid-template-columns:repeat(2,minmax(0,1fr))}
}