:root{--bg:#f4f1ea;--panel:#ebe7dc;--ink:#16150f;--mute:#6b675c;--line:#d9d4c7;--accent:#b4410f;--ok:#2f6b3a;--warn:#9a6a00}
@media (prefers-color-scheme:dark){:root{--bg:#121210;--panel:#1a1916;--ink:#ece8dc;--mute:#9a9588;--line:#2c2a24;--accent:#e2733a;--ok:#7fc58b;--warn:#e0b04a}}
*{box-sizing:border-box}html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.55 "Inter",system-ui,sans-serif;-webkit-font-smoothing:antialiased}
a{color:inherit}button{font:inherit;color:inherit}
h1,h2,h3{font-family:"Fraunces",Georgia,serif;font-weight:400;line-height:1.12;margin:0}
.wrap{max-width:1240px;margin:0 auto;padding:0 24px}
.eyebrow{font-size:11px;letter-spacing:.12em;text-transform:uppercase;color:var(--mute)}
.more{color:var(--accent);text-decoration:none;border-bottom:1px solid var(--accent);font-size:14px}

/* top bar: always visible, one-click project switching */
.bar{position:sticky;top:0;z-index:20;background:var(--bg);border-bottom:1px solid var(--line)}
.bar .wrap{display:flex;align-items:center;gap:20px;height:56px}
.bar .name{font-family:"Fraunces",serif;font-size:18px;text-decoration:none;white-space:nowrap}
.pills{display:flex;gap:2px;overflow-x:auto;flex:1;scrollbar-width:none}.pills::-webkit-scrollbar{display:none}
.pills a{font-size:13px;color:var(--mute);text-decoration:none;white-space:nowrap;padding:6px 10px;border-bottom:2px solid transparent}
.pills a:hover{color:var(--ink)}.pills a.on{color:var(--ink);border-color:var(--accent)}
.bar .pdf{font-size:13px;color:var(--mute);text-decoration:none;white-space:nowrap}.bar .pdf:hover{color:var(--ink)}

/* home */
.hero{padding:44px 0 28px}.hero h1{font-size:clamp(28px,3.6vw,46px);max-width:26ch;letter-spacing:-.015em;margin-top:10px}
.hero p{color:var(--mute);max-width:70ch;margin:14px 0 0}
.grid{display:grid;grid-template-columns:repeat(4,1fr);gap:16px;padding-bottom:40px}
.tile{display:block;text-decoration:none;border:1px solid var(--line);background:var(--panel);transition:border-color .2s,transform .2s}
.tile:hover{border-color:var(--accent);transform:translateY(-2px)}
.tile .shot{aspect-ratio:4/3;overflow:hidden;background:var(--line)}
.tile img{width:100%;height:100%;object-fit:cover;display:block}
.tile .noimg{display:flex;align-items:center;justify-content:center;height:100%;color:var(--mute);font:11px ui-monospace,Consolas,monospace;letter-spacing:.08em;text-transform:uppercase}
.tile .tx{padding:12px 14px 14px}.tile h3{font-size:18px;margin:2px 0 6px}.tile p{margin:0;font-size:13px;color:var(--mute);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.badge{display:inline-block;font-size:10px;letter-spacing:.1em;text-transform:uppercase;color:var(--accent);margin-left:6px}
.has3d{font-size:10px;letter-spacing:.1em;text-transform:uppercase;border:1px solid var(--line);padding:1px 6px;margin-left:6px;color:var(--mute)}
.band{border-top:1px solid var(--line);padding:32px 0 40px}
.about{display:grid;grid-template-columns:1.1fr 1.6fr;gap:40px}.about h2{font-size:24px;margin-bottom:10px}.about p{margin:0 0 12px;font-size:15px;max-width:60ch}
.skills{display:grid;grid-template-columns:1fr 1fr;gap:18px 28px}.skills h4{margin:0 0 2px;font-size:11px;letter-spacing:.1em;text-transform:uppercase;color:var(--mute);font-weight:500}.skills p{margin:0;font-size:14px}
footer{border-top:1px solid var(--line);font-size:13px;color:var(--mute)}footer .wrap{display:flex;justify-content:space-between;padding:18px 24px;gap:12px;flex-wrap:wrap}

/* project */
.phead{display:flex;align-items:flex-end;justify-content:space-between;gap:24px;padding:22px 0 14px;flex-wrap:wrap}
.phead h1{font-size:clamp(26px,3vw,38px);margin-top:4px}
.chips{display:flex;gap:18px;flex-wrap:wrap}.chip{font-size:12px;color:var(--mute)}.chip b{display:block;font-family:"Fraunces",serif;font-weight:400;font-size:20px;color:var(--ink);line-height:1.1}
.nav2{display:flex;justify-content:space-between;align-items:center;font-size:13px;border-top:1px solid var(--line);border-bottom:1px solid var(--line);padding:6px 0}
.nav2 a{text-decoration:none;color:var(--mute)}.nav2 a:hover{color:var(--ink)}.nav2 kbd{font:11px ui-monospace,Consolas,monospace;border:1px solid var(--line);padding:0 4px;margin:0 4px}
.stabs{display:flex;gap:0;margin-top:14px;border-bottom:1px solid var(--line)}
.stabs button{background:none;border:0;border-bottom:2px solid transparent;padding:8px 14px;cursor:pointer;color:var(--mute);font-size:14px;margin-bottom:-1px}
.stabs button.on{color:var(--ink);border-color:var(--accent)}
.pmain{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:36px;padding:22px 0 36px;align-items:start}
.ptext p{margin:0 0 14px;max-width:62ch}.ptext h3{font-size:19px;margin:20px 0 8px}.ptext ul{margin:0;padding-left:18px;max-width:62ch}.ptext li{margin-bottom:6px}
.meta{display:grid;grid-template-columns:auto 1fr;gap:4px 14px;font-size:13px;margin:0 0 6px;color:var(--mute);border-top:1px solid var(--line);padding-top:10px}.meta b{font-weight:500;color:var(--ink)}
details{border-top:1px solid var(--line);margin-top:14px;padding-top:8px}summary{cursor:pointer;font-family:"Fraunces",serif;font-size:18px;padding:4px 0}
.tbl{overflow-x:auto}table{border-collapse:collapse;width:100%;font-size:14px}th,td{text-align:left;vertical-align:top;padding:8px 10px;border-bottom:1px solid var(--line)}td{color:var(--mute)}th:first-child{white-space:nowrap}
.media{position:sticky;top:72px}
.seg{display:flex;gap:6px;margin-bottom:8px;align-items:center;flex-wrap:wrap}
.seg button{background:none;border:1px solid var(--line);padding:5px 12px;font-size:13px;cursor:pointer;color:var(--mute)}
.seg button.on{background:var(--ink);color:var(--bg);border-color:var(--ink)}
.seg .sp{flex:1}
.stage{width:100%;aspect-ratio:4/3;background:var(--panel);border:1px solid var(--line);position:relative;overflow:hidden}
.stage img{width:100%;height:100%;object-fit:contain;display:block;cursor:zoom-in;background:var(--panel)}
.stage model-viewer{width:100%;height:100%;background:radial-gradient(circle at 50% 40%,#9b988f,#6f6d66);--poster-color:transparent}
.stage .noimg{display:flex;align-items:center;justify-content:center;height:100%;color:var(--mute);font:12px ui-monospace,Consolas,monospace;letter-spacing:.08em;text-transform:uppercase}
.cap{font-size:13px;color:var(--mute);margin:6px 0 0;min-height:20px}
.thumbs{display:flex;gap:6px;overflow-x:auto;margin-top:8px;padding-bottom:4px}
.thumbs button{flex:0 0 72px;height:54px;padding:0;border:2px solid transparent;background:var(--panel);cursor:pointer;opacity:.75}
.thumbs button.on{border-color:var(--accent);opacity:1}.thumbs img{width:100%;height:100%;object-fit:cover;display:block}
.ar{position:absolute;top:50%;transform:translateY(-50%);background:rgba(20,20,18,.55);color:#fff;border:0;width:34px;height:44px;cursor:pointer;font-size:20px}.ar.l{left:0}.ar.r{right:0}
.lightbox{position:fixed;inset:0;background:rgba(10,10,8,.93);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;z-index:50;cursor:zoom-out}
.lightbox[hidden]{display:none}.lightbox img{max-width:100%;max-height:86vh;object-fit:contain}.lightbox p{color:#ccc;font-size:14px;margin:10px 0 0}

/* driver board study */
.note{border:1px solid var(--line);border-left:3px solid var(--warn);background:var(--panel);padding:10px 14px;font-size:14px;margin:18px 0}
.drv{display:grid;grid-template-columns:minmax(0,1.25fr) minmax(0,1fr);gap:28px;padding-bottom:36px;align-items:start}
.board{position:relative;border:1px solid var(--line);background:#222}.board img{width:100%;display:block}
.hs{position:absolute;transform:translate(-50%,-50%);width:26px;height:26px;border-radius:50%;border:2px solid #fff;background:rgba(180,65,15,.55);cursor:pointer;padding:0;box-shadow:0 0 0 2px rgba(0,0,0,.35)}
.hs:hover,.hs.on{background:var(--accent);transform:translate(-50%,-50%) scale(1.15)}
.part{border:1px solid var(--line);background:var(--panel);padding:12px 14px;margin-top:10px;min-height:96px;font-size:14px}.part b{font-family:"Fraunces",serif;font-weight:400;font-size:18px;display:block}
.calc{border:1px solid var(--line);background:var(--panel);padding:14px}
.calc h3{font-size:18px;margin-bottom:10px}
.row{display:grid;grid-template-columns:96px 1fr 70px;gap:10px;align-items:center;font-size:13px;margin:8px 0}.row output{text-align:right;font-variant-numeric:tabular-nums}
.row input[type=range]{width:100%;accent-color:var(--accent)}
.read{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin:12px 0}
.read div{border:1px solid var(--line);padding:6px 8px;font-size:11px;color:var(--mute)}.read b{display:block;font-family:"Fraunces",serif;font-weight:400;font-size:20px;color:var(--ink)}
.loss{margin-top:8px}.loss .lr{display:grid;grid-template-columns:96px 1fr 52px;gap:8px;align-items:center;font-size:12px;margin:3px 0;color:var(--mute)}
.loss .tr{height:8px;background:var(--line)}.loss .tr i{display:block;height:100%;background:var(--accent)}
.flag{font-size:13px;margin-top:8px;color:var(--warn);min-height:20px}
.risks{width:100%;font-size:13px;margin-top:8px}.risks td,.risks th{padding:6px 8px}
.s{font-size:11px;letter-spacing:.06em;text-transform:uppercase}.s.open{color:var(--warn)}.s.closed{color:var(--ok)}

@media(max-width:900px){.grid{grid-template-columns:repeat(2,1fr)}.about,.pmain,.drv{grid-template-columns:1fr}.media{position:static}.skills{grid-template-columns:1fr}.bar .pdf{display:none}.read{grid-template-columns:repeat(2,1fr)}}
@media(max-width:480px){.wrap{padding:0 16px}.grid{gap:10px}.row{grid-template-columns:80px 1fr 60px}}
@media(max-width:900px){.nav2 .kb{display:none}.nav2{font-size:12px;gap:8px}.nav2>a{max-width:34%}}

.chips2{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 8px}
.chips2:empty{display:none}
.chips2 button{background:none;border:0;border-bottom:2px solid transparent;padding:4px 2px;margin-right:10px;font-size:13px;color:var(--mute);cursor:pointer}
.chips2 button.on{color:var(--ink);border-color:var(--accent)}
.chips2 em{font-style:normal;font-size:11px;margin-left:5px;opacity:.7}
.thumbs button{position:relative}.thumbs .play{position:absolute;inset:auto 4px 4px auto;font-style:normal;font-size:10px;background:rgba(0,0,0,.6);color:#fff;padding:1px 4px}
.stage video{display:block}

.honors{border:1px solid var(--line);background:var(--panel);padding:16px 20px;margin:8px 0 24px}
.honors h3{font-size:18px;margin-bottom:8px}.honors ul{margin:0;padding-left:18px;columns:2;column-gap:32px}.honors li{margin-bottom:6px;break-inside:avoid}
.acts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;padding-bottom:48px}
.act{border:1px solid var(--line);padding:16px 18px}.act h3{font-size:20px;margin-bottom:2px}.act ul{margin:10px 0 12px;padding-left:18px}.act li{margin-bottom:4px;font-size:15px}
.act figure{margin:14px 0 0}.act img{width:100%;max-height:260px;object-fit:cover;display:block;border:1px solid var(--line);cursor:zoom-in}
@media(max-width:900px){.acts{grid-template-columns:1fr}.honors ul{columns:1}}

.act img{max-height:none;height:auto;object-fit:contain;background:var(--panel)}
.act.wide{grid-column:1/-1}
.shots{display:grid;gap:14px;margin-top:14px}
.act.wide .shots{grid-template-columns:repeat(2,1fr)}
.act figure{margin:0}.act figcaption{font-size:13px;color:var(--mute);margin-top:6px}
@media(max-width:900px){.act.wide .shots{grid-template-columns:1fr}}
/* compact photo thumbnails on the Activities page (click to enlarge) */
.shots,.act.wide .shots{display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:8px;margin-top:12px}
.act img{width:100%;height:96px;max-height:none;object-fit:contain;background:var(--panel);border:1px solid var(--line);cursor:zoom-in}
.act figcaption{font-size:11px;line-height:1.3;margin-top:3px;color:var(--mute);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.act.wide{grid-column:auto}
.acts{grid-template-columns:repeat(auto-fill,minmax(300px,1fr))}
@media(max-width:900px){.act.wide .shots{grid-template-columns:repeat(auto-fill,minmax(110px,1fr))}}