:root{
  --ink:#0c1119;
  --ink-soft:#3a4657;
  --paper:#e8ecf1;
  --paper-2:#dfe4ea;
  --card:#ffffff;
  --line:#c6cfda;
  --line-strong:#9aa6b6;
  --hot:#ff4d2e;
  --cool:#1f5fe0;
  --shadow:18px 18px 0 rgba(12,17,25,.06);
  --maxw:1080px;
}
*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;background:var(--paper);color:var(--ink);
  font-family:"IBM Plex Sans",system-ui,sans-serif;font-size:17px;line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background-image:
    linear-gradient(rgba(12,17,25,.035) 1px,transparent 1px),
    linear-gradient(90deg,rgba(12,17,25,.035) 1px,transparent 1px);
  background-size:32px 32px;
}
a{color:var(--cool);text-decoration:none;}
a:hover{text-decoration:underline;text-underline-offset:3px;}
img{max-width:100%;}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px;}
.mono{font-family:"IBM Plex Mono",monospace;}
.eyebrow{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.18em;
  text-transform:uppercase;color:var(--ink-soft);}

/* ---------- top bar ---------- */
header.bar{position:sticky;top:0;z-index:50;background:rgba(232,236,241,.82);
  backdrop-filter:blur(8px);border-bottom:1px solid var(--line);}
.bar .wrap{display:flex;align-items:center;justify-content:space-between;height:60px;}
.brand{font-family:"Space Grotesk",system-ui,sans-serif;font-weight:700;
  letter-spacing:-.01em;font-size:18px;color:var(--ink);}
.brand:hover{text-decoration:none;}
.brand span{color:var(--hot);}
nav.links{display:flex;gap:22px;}
nav.links a{color:var(--ink);font-size:14px;font-family:"IBM Plex Mono",monospace;}
nav.links a:hover{color:var(--cool);text-decoration:none;}
nav.links a.active{color:var(--hot);}
@media(max-width:680px){nav.links{gap:14px;}nav.links a{font-size:12px;}}

/* ---------- generic section ---------- */
section{padding:56px 0;border-top:1px solid var(--line);}
.sec-head{display:flex;align-items:baseline;gap:16px;margin-bottom:34px;}
.sec-head .num{font-family:"IBM Plex Mono",monospace;color:var(--hot);font-size:14px;}
h1,h2,h3,h4{font-family:"Space Grotesk",system-ui,sans-serif;letter-spacing:-.02em;}
h2{font-weight:700;font-size:clamp(26px,3.6vw,36px);margin:0;}

/* ---------- buttons / chips ---------- */
.btn{display:inline-block;font-family:"IBM Plex Mono",monospace;font-size:14px;
  padding:12px 20px;border:1.5px solid var(--ink);color:var(--ink);background:var(--card);
  transition:transform .12s ease, box-shadow .12s ease;}
.btn:hover{text-decoration:none;transform:translate(-2px,-2px);box-shadow:6px 6px 0 var(--ink);}
.btn.solid{background:var(--ink);color:#fff;border-color:var(--ink);}
.btn.solid:hover{box-shadow:6px 6px 0 var(--hot);}
.cta-row{margin-top:30px;display:flex;gap:14px;flex-wrap:wrap;}
.facts{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;}
.chip{font-family:"IBM Plex Mono",monospace;font-size:12.5px;border:1px solid var(--line-strong);
  border-radius:999px;padding:6px 12px;background:var(--card);color:var(--ink-soft);}

/* ---------- home hero ---------- */
.hero{padding:70px 0 20px;}
.hero .grid{display:grid;grid-template-columns:1.3fr .8fr;gap:44px;align-items:center;}
@media(max-width:820px){.hero .grid{grid-template-columns:1fr;gap:26px;}}
h1.name{font-weight:700;font-size:clamp(38px,6vw,64px);line-height:1.03;margin:14px 0 18px;}
h1.name em{font-style:normal;color:var(--hot);}
.lede{font-size:clamp(17px,2.2vw,20px);color:var(--ink-soft);max-width:46ch;}
.portrait-frame{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);padding:12px;}
.portrait-frame img{display:block;width:100%;}
.portrait-frame .cap{font-family:"IBM Plex Mono",monospace;font-size:11px;color:var(--ink-soft);
  margin-top:8px;display:flex;justify-content:space-between;}

/* ---------- about body ---------- */
.prose p{margin:0 0 16px;}
.prose p:last-child{margin-bottom:0;}

/* ---------- featured project card (home) ---------- */
.feature{display:grid;grid-template-columns:1fr 1fr;gap:0;background:var(--card);
  border:1px solid var(--line);box-shadow:var(--shadow);overflow:hidden;}
@media(max-width:760px){.feature{grid-template-columns:1fr;}}
.feature .ph{background:var(--paper-2);border-right:1px solid var(--line);position:relative;}
.feature .ph img{width:100%;height:100%;object-fit:cover;display:block;}
@media(max-width:760px){.feature .ph{border-right:none;border-bottom:1px solid var(--line);}}
.feature .txt{padding:30px;}
.feature h3{font-weight:700;font-size:clamp(22px,3vw,28px);margin:0 0 6px;}
.feature .sub{font-family:"IBM Plex Mono",monospace;font-size:13px;color:var(--ink-soft);margin-bottom:14px;}
.tag{position:absolute;top:14px;left:14px;font-family:"IBM Plex Mono",monospace;font-size:12px;
  letter-spacing:.05em;background:var(--ink);color:#fff;padding:6px 12px;}
.tag.win{background:var(--hot);}

/* ---------- project page ---------- */
.project{background:var(--card);border:1px solid var(--line);box-shadow:var(--shadow);}
.project .media{position:relative;border-bottom:1px solid var(--line);background:var(--paper-2);}
.project .media img{width:100%;display:block;}
.project .body{padding:30px 30px 34px;}
.project h1{font-weight:700;font-size:clamp(26px,4vw,40px);margin:0 0 6px;}
.project .sub{color:var(--ink-soft);font-size:15px;margin-bottom:22px;font-family:"IBM Plex Mono",monospace;}
.readout{display:grid;grid-template-columns:repeat(4,1fr);border:1px solid var(--line);margin:22px 0 26px;}
.readout div{padding:12px 14px;border-right:1px solid var(--line);}
.readout div:last-child{border-right:none;}
.readout .k{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-soft);}
.readout .v{font-family:"Space Grotesk",system-ui,sans-serif;font-weight:600;font-size:15px;margin-top:3px;}
@media(max-width:640px){.readout{grid-template-columns:repeat(2,1fr);}
  .readout div:nth-child(2){border-right:none;}
  .readout div:nth-child(1),.readout div:nth-child(2){border-bottom:1px solid var(--line);}}
.block{margin:20px 0;}
.block .label{font-family:"IBM Plex Mono",monospace;font-size:12px;letter-spacing:.14em;
  text-transform:uppercase;color:var(--hot);margin-bottom:6px;}
.block p{margin:0;}

/* aircraft context + diagrams */
.aircraft{display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;
  background:var(--paper-2);border:1px solid var(--line);padding:22px;margin:6px 0 26px;}
@media(max-width:640px){.aircraft{grid-template-columns:1fr;}}
.aircraft h4{font-weight:700;font-size:18px;margin:0 0 8px;}
.aircraft p{margin:0;font-size:15px;color:var(--ink-soft);}
.aircraft svg{width:100%;height:auto;display:block;}
.specs{display:grid;grid-template-columns:repeat(2,1fr);gap:8px;margin-top:14px;}
.specs .s{border:1px solid var(--line);background:var(--card);padding:8px 10px;}
.specs .s .k{font-family:"IBM Plex Mono",monospace;font-size:10px;letter-spacing:.12em;
  text-transform:uppercase;color:var(--ink-soft);}
.specs .s .v{font-family:"Space Grotesk",system-ui,sans-serif;font-weight:600;font-size:15px;}
figure.diagram{margin:6px 0 22px;border:1px solid var(--line);background:var(--card);padding:18px;}
figure.diagram svg{width:100%;height:auto;display:block;}
figure.diagram figcaption{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-soft);
  margin-top:12px;text-align:center;}
.dg-box{fill:var(--card);stroke:var(--ink);stroke-width:1.5;}
.dg-box.hot{stroke:var(--hot);}
.dg-t{font-family:"IBM Plex Mono",monospace;font-size:11px;fill:var(--ink);}
.dg-sub{font-family:"IBM Plex Mono",monospace;font-size:9px;fill:var(--ink-soft);}
.dg-arrow{stroke:var(--cool);stroke-width:1.8;fill:none;}
.dg-loop{stroke:var(--ink-soft);stroke-width:1.4;fill:none;stroke-dasharray:4 4;}
.dg-dim{stroke:var(--hot);stroke-width:1.2;}
.dg-label{font-family:"IBM Plex Mono",monospace;font-size:10px;fill:var(--ink-soft);letter-spacing:.06em;}

/* report figures pulled from the PDF */
.figures{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin:8px 0 6px;}
@media(max-width:700px){.figures{grid-template-columns:1fr;}}
figure.report{margin:0;border:1px solid var(--line);background:var(--card);padding:16px;}
figure.report.wide{grid-column:1 / -1;}
figure.report img{width:100%;display:block;}
figure.report figcaption{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-soft);
  margin-top:10px;}
figure.report .fnum{color:var(--hot);}

/* photo gallery */
.gallery{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:24px;}
@media(max-width:640px){.gallery{grid-template-columns:1fr;}}
figure.shot{margin:0;}
figure.shot img{width:100%;border:1px solid var(--line);display:block;}
figure.shot figcaption{font-family:"IBM Plex Mono",monospace;font-size:12px;color:var(--ink-soft);margin-top:8px;}

/* placeholder / coming */
.coming{border:1.5px dashed var(--line-strong);background:transparent;padding:34px;text-align:center;
  color:var(--ink-soft);font-family:"IBM Plex Mono",monospace;font-size:14px;}
.page-intro{padding:60px 0 10px;}

/* ---------- footer ---------- */
footer{border-top:1px solid var(--line);padding:44px 0 60px;margin-top:10px;}
footer .row{display:flex;justify-content:space-between;flex-wrap:wrap;gap:20px;align-items:center;}
footer .brand{font-size:20px;}
footer .contact{display:flex;gap:20px;flex-wrap:wrap;font-family:"IBM Plex Mono",monospace;font-size:14px;}

/* data table (wind tunnel drag results) */
.dtable{width:100%;border-collapse:collapse;margin:8px 0 6px;font-size:15px;}
.dtable th,.dtable td{border:1px solid var(--line);padding:10px 12px;text-align:left;}
.dtable thead th{font-family:"IBM Plex Mono",monospace;font-size:11px;letter-spacing:.1em;
  text-transform:uppercase;color:var(--ink-soft);background:var(--paper-2);}
.dtable td.v{font-family:"IBM Plex Mono",monospace;}
.dtable tr.best td{background:rgba(255,77,46,.06);}
.dtable td .win{color:var(--hot);font-family:"IBM Plex Mono",monospace;font-size:12px;}
.figstack{display:grid;gap:16px;margin:8px 0;}