/* Redesign preview — same palette and type families, sharper hierarchy, dark theme. */
:root{
  --paper:#f6f5f0;--surface:#fffefa;--ink:#202e2d;--muted:#63716b;--line:#dedfd5;--line-strong:#c8cbbd;
  --accent:#216653;--accent-strong:#174c3e;--soft:#e9eee5;--tint:#d3e4cf;
  --block:#202e2d;--block-ink:#f3f2ea;--block-muted:#a9b6ae;--block-line:#34443f;--block-accent:#8fd1b4;
  --shadow:0 1px 2px rgb(32 46 45/.04),0 22px 44px -26px rgb(32 46 45/.32);
  --mono:'DM Mono',ui-monospace,monospace;--sans:'DM Sans',system-ui,sans-serif;--serif:'Instrument Serif',Georgia,serif;
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:light;
}
@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --paper:#0f1715;--surface:#141f1c;--ink:#e6e9e1;--muted:#97a59d;--line:#24312d;--line-strong:#34443e;
    --accent:#7ccaa9;--accent-strong:#a3dcc3;--soft:#172521;--tint:#1f3b32;
    --block:#172521;--block-ink:#eef0e8;--block-muted:#9fb0a7;--block-line:#2b3d37;--block-accent:#8fd1b4;
    --shadow:0 22px 44px -26px rgb(0 0 0/.7);color-scheme:dark;
  }
}
:root[data-theme="dark"]{
  --paper:#0f1715;--surface:#141f1c;--ink:#e6e9e1;--muted:#97a59d;--line:#24312d;--line-strong:#34443e;
  --accent:#7ccaa9;--accent-strong:#a3dcc3;--soft:#172521;--tint:#1f3b32;
  --block:#172521;--block-ink:#eef0e8;--block-muted:#9fb0a7;--block-line:#2b3d37;--block-accent:#8fd1b4;
  --shadow:0 22px 44px -26px rgb(0 0 0/.7);color-scheme:dark;
}

/* Base */
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:24px;scrollbar-gutter:stable}
body{margin:0;background:var(--paper);color:var(--ink);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
a{color:inherit;text-decoration:none}
button{font:inherit;color:inherit}
h1,h2,h3,p,ul{margin:0}
img,svg{display:block;max-width:100%}
::selection{background:var(--tint)}
a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:4px;border-radius:6px}
.skip{position:fixed;top:-80px;left:20px;background:var(--ink);color:var(--paper);padding:10px 18px;border-radius:999px;z-index:60}
.skip:focus{top:12px}
.theme-anim,.theme-anim *{transition:background-color .35s ease,border-color .35s ease,color .35s ease,fill .35s ease,stroke .35s ease!important}
.progress{position:fixed;inset:0 0 auto;height:2px;background:var(--accent);transform-origin:left;transform:scaleX(0);z-index:50}

/* Shell + sidebar */
.shell{max-width:1480px;margin:auto;display:grid;grid-template-columns:280px minmax(0,1fr)}
.sidebar{position:sticky;top:0;height:100vh;height:100dvh;padding:40px 26px 28px 34px;border-right:1px solid var(--line);display:flex;flex-direction:column;overflow-y:auto}
.side-top{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}
.identity{display:flex;align-items:center;gap:14px;min-width:0}
.portrait{width:56px;height:56px;border-radius:50%;object-fit:cover;filter:saturate(.8);box-shadow:0 0 0 3px var(--paper),0 0 0 4px var(--line-strong)}
.name{font-size:18px;font-weight:600;letter-spacing:-.02em;line-height:1.25}
.role{font:11px/1.5 var(--mono);color:var(--muted);margin-top:3px}
.theme-toggle{flex:none;width:36px;height:36px;border-radius:50%;border:1px solid var(--line);background:var(--surface);display:grid;place-items:center;cursor:pointer;color:var(--muted);transition:color .2s,border-color .2s}
.theme-toggle:hover{color:var(--accent);border-color:var(--accent)}
.theme-toggle svg{width:16px;height:16px}
.theme-toggle .sun,[data-theme="dark"] .theme-toggle .moon{display:none}
[data-theme="dark"] .theme-toggle .sun{display:block}
.side-bio{font-size:14px;line-height:1.65;color:var(--muted);margin-top:26px}
.side-bio strong{color:var(--ink);font-weight:500}
.side-nav{display:flex;flex-direction:column;gap:2px;margin-top:34px}
.side-nav a{position:relative;display:flex;align-items:center;gap:16px;padding:10px 12px;border-radius:8px;font-size:14px;color:var(--muted);transition:background-color .2s,color .2s}
.side-nav a span{font:11px var(--mono);opacity:.7}
.side-nav a:hover{color:var(--ink);background:var(--soft)}
.side-nav a[aria-current]{color:var(--accent);background:var(--soft)}
.side-nav a[aria-current]::before{content:"";position:absolute;left:0;top:50%;width:2px;height:16px;margin-top:-8px;border-radius:2px;background:var(--accent)}
.side-bottom{margin-top:auto;padding-top:32px}
.side-links{display:grid;grid-template-columns:1fr 1fr;gap:10px 12px;font-size:13px}
.side-links a{color:var(--muted);transition:color .2s}
.side-links a:hover{color:var(--accent)}
.side-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:22px;padding-top:18px;border-top:1px solid var(--line)}
.side-note{font:10.5px/1.7 var(--mono);color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.toggle-mobile{display:none}

/* Main column */
main{padding:0 clamp(24px,5vw,72px);min-width:0}
.main-inner{max-width:1080px;margin:0 auto}
.topline{display:flex;justify-content:space-between;align-items:center;gap:16px;padding-top:40px;font:11px var(--mono);color:var(--muted);letter-spacing:.08em;text-transform:uppercase}
.status{display:flex;align-items:center;gap:10px}
.pulse{position:relative;width:7px;height:7px;border-radius:50%;background:var(--accent)}
.pulse::after{content:"";position:absolute;inset:-4px;border-radius:50%;border:1px solid var(--accent);opacity:0;animation:pulse 2.6s var(--ease) infinite}
@keyframes pulse{0%{transform:scale(.5);opacity:.8}100%{transform:scale(1.8);opacity:0}}

/* Hero */
.hero{display:grid;grid-template-columns:minmax(0,1fr) clamp(300px,30vw,400px);gap:clamp(24px,4vw,56px);align-items:stretch;padding:clamp(48px,7vw,88px) 0 clamp(40px,5vw,64px)}
.hero-copy{container-type:inline-size;display:flex;flex-direction:column}
/* Widest line is ~9.1em, so 10.4cqi keeps each line on one row in any column width. */
/* margin-top pulls the cap height (not the line box) level with the card's top edge */
.hero h1{margin-top:-.15em;font-size:clamp(36px,4.4vw,66px);font-size:clamp(32px,10.4cqi,70px);line-height:1.02;font-weight:500;letter-spacing:-.042em}
.hero h1 .line{display:block}
.hero h1 em{font-family:var(--serif);font-weight:400;color:var(--accent);font-size:1.1em;letter-spacing:-.015em}
.hero-lede{max-width:600px;margin-top:28px;font-size:19px;line-height:1.7;color:var(--muted)}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin-top:34px}
.btn{display:inline-flex;align-items:center;gap:10px;height:46px;padding:0 20px;border-radius:999px;font-size:14.5px;font-weight:500;border:1px solid transparent;cursor:pointer;transition:background-color .2s,border-color .2s,color .2s}
.btn .arr{display:inline-block;transition:transform .25s var(--ease)}
.btn:hover .arr{transform:translate(2px,0)}
.btn:hover .arr.down{transform:translate(0,2px)}
.btn-primary{background:var(--ink);color:var(--paper)}
.btn-primary:hover{background:var(--accent)}
.btn-ghost{border-color:var(--line-strong);background:transparent}
.btn-ghost:hover{border-color:var(--ink);background:var(--surface)}
.text-link{display:inline-flex;align-items:center;gap:8px;height:46px;padding:0 8px;font-size:14.5px;font-weight:500;color:var(--accent)}
.text-link:hover{text-decoration:underline;text-underline-offset:4px}
.text-link:hover .arr{transform:translateX(2px)}
.text-link .arr{display:inline-block;transition:transform .25s var(--ease)}
.head-links{display:flex;flex-wrap:wrap;gap:8px 20px}
.loop .b-sphere{fill:url(#b-shade);stroke:var(--line-strong)}
.loop .b-axis,.loop .b-eq{fill:none;stroke:var(--line-strong);stroke-width:1}
.loop .b-back{stroke-dasharray:3 4;opacity:.8}
.loop .b-pole{fill:var(--line-strong)}
.loop .b-guide{stroke:var(--accent);stroke-width:1;stroke-dasharray:2 3;opacity:.5}
.loop .b-vec{stroke:var(--accent);stroke-width:2.25;stroke-linecap:round}
.loop .b-tip{fill:var(--accent)}
.loop .b-halo{fill:var(--accent);opacity:.16}
.loop .b-axis-label{font:12px var(--mono);fill:var(--muted)}
.loop .b-ket{font:italic 19px var(--serif);fill:var(--ink)}
.loop .b-psi{font:italic 18px var(--serif);fill:var(--accent)}
.hero-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));margin-top:auto;padding-top:clamp(32px,4vw,48px)}
.stat{padding:18px 16px 0;border-top:1px solid var(--line);border-left:1px solid var(--line)}
.stat:first-child{border-left:0;padding-left:0}
.stat b{display:block;font:400 clamp(36px,3.4vw,48px)/1 var(--serif);letter-spacing:-.01em}
.stat span{display:block;margin-top:8px;font-size:13px;line-height:1.4;color:var(--muted)}

/* Sections */
section{padding:clamp(64px,8vw,104px) 0 0;scroll-margin-top:16px}
.section-head{display:flex;justify-content:space-between;align-items:flex-end;gap:24px;flex-wrap:wrap}
.section-head h2{font:400 clamp(38px,4.2vw,54px)/1.02 var(--serif);letter-spacing:-.01em}
.section-index{display:flex;align-items:center;gap:12px;font:12px var(--mono);color:var(--accent);letter-spacing:.1em;text-transform:uppercase;margin-bottom:16px}
.section-index::after{content:"";width:28px;height:1px;background:currentColor;opacity:.5}
.head-link{font-size:14px;color:var(--muted);border-bottom:1px solid var(--line-strong);padding-bottom:2px;transition:color .2s,border-color .2s}
.head-link:hover{color:var(--accent);border-color:var(--accent)}
.section-lede{max-width:620px;margin-top:18px;font-size:17px;line-height:1.7;color:var(--muted)}
.toolbar{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin:34px 0 22px}
.segmented{display:inline-flex;flex-wrap:wrap;gap:2px;padding:4px;border:1px solid var(--line);border-radius:999px;background:var(--surface)}
.segmented button{border:0;background:none;padding:8px 15px;border-radius:999px;font-size:13.5px;color:var(--muted);cursor:pointer;transition:background-color .2s,color .2s}
.segmented button:hover{color:var(--ink)}
.segmented button i{font:normal 11px var(--mono);margin-left:6px;opacity:.65}
.segmented button[aria-pressed="true"]{background:var(--ink);color:var(--paper)}
.toolbar-status{font:12px var(--mono);color:var(--muted)}

/* News */
.news-list{margin-top:30px;border-top:1px solid var(--line)}
.news-item{display:grid;grid-template-columns:110px minmax(0,1fr);gap:24px;padding:20px 0;border-bottom:1px solid var(--line);align-items:baseline}
.news-item time{font:12px var(--mono);color:var(--muted);letter-spacing:.04em;text-transform:uppercase}
.news-item p{font-size:15.5px;line-height:1.65;color:var(--muted)}
.news-item strong{font-weight:500;color:var(--ink)}
.news-item a{text-decoration:underline;text-decoration-color:var(--line-strong);text-underline-offset:4px;transition:color .2s,text-decoration-color .2s}
.news-item a:hover{color:var(--accent);text-decoration-color:var(--accent)}
.new-tag{display:inline-block;vertical-align:2px;margin-right:10px;padding:2px 8px;border-radius:999px;background:var(--tint);color:var(--accent-strong);font:10.5px var(--mono);letter-spacing:.08em;text-transform:uppercase}

/* Publications */
.paper-list{border-top:1px solid var(--line)}
.paper{display:grid;grid-template-columns:88px minmax(0,1fr);gap:28px;padding:34px 0;border-bottom:1px solid var(--line)}
.paper[hidden]{display:none}
.paper-year{font:400 28px/1 var(--serif);color:var(--muted);padding-top:3px}
.paper-meta{display:flex;flex-wrap:wrap;align-items:center;gap:8px 12px;margin-bottom:14px}
.badge{padding:4px 10px;border-radius:999px;font:10.5px/1.4 var(--mono);letter-spacing:.08em;text-transform:uppercase}
.badge-journal{background:var(--accent);color:var(--paper)}
.badge-conference{background:var(--tint);color:var(--accent-strong)}
.badge-preprint{border:1px solid var(--line-strong);color:var(--muted)}
.badge-new{display:inline-flex;align-items:center;gap:7px;padding:4px 2px;color:var(--accent)}
.badge-new::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--tint)}
.paper-venue{font-size:13.5px;line-height:1.5;color:var(--muted)}
.paper h3{max-width:820px;font:400 clamp(25px,2.4vw,31px)/1.18 var(--serif);letter-spacing:-.005em}
.paper h3 a{transition:color .2s}
.paper h3 a:hover{color:var(--accent)}
.paper p{max-width:740px;margin-top:12px;font-size:15px;line-height:1.7;color:var(--muted)}
.paper p strong{color:var(--ink);font-weight:500}
.paper-links{display:flex;flex-wrap:wrap;gap:8px;margin-top:18px}
.pill{display:inline-flex;align-items:center;gap:6px;padding:6px 13px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:12.5px;font-weight:500;transition:border-color .2s,color .2s}
.pill:hover{border-color:var(--accent);color:var(--accent)}
.pill span{color:var(--muted);transition:color .2s}
.pill:hover span{color:inherit}
.more-row{display:flex;align-items:center;gap:16px;margin-top:28px}
.more-row [hidden]{display:none}

/* Projects */
.project-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:16px}
.project{display:flex;flex-direction:column;padding:26px;background:var(--surface);border:1px solid var(--line);border-radius:16px;transition:transform .3s var(--ease),box-shadow .3s var(--ease),border-color .3s}
.project[hidden]{display:none}
.project:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--line-strong)}
.project:focus-visible{border-radius:16px}
.project-top{display:flex;justify-content:space-between;align-items:center;gap:12px;font:11.5px var(--mono);color:var(--muted)}
.type-chip{padding:3px 9px;border:1px solid var(--line);border-radius:999px;font-size:10.5px;letter-spacing:.08em;text-transform:uppercase}
.project-cat{margin-top:30px;font:11px/1.5 var(--mono);color:var(--accent);letter-spacing:.08em;text-transform:uppercase}
.project h3{margin-top:8px;font-size:25px;font-weight:500;line-height:1.15;letter-spacing:-.028em}
.project-summary{margin-top:12px;font-size:14.5px;line-height:1.65;color:var(--muted)}
.project-foot{margin-top:auto;padding-top:28px}
.metric{padding-top:20px;border-top:1px solid var(--line)}
.metric b{display:block;font:400 clamp(34px,3.2vw,42px)/1 var(--serif);letter-spacing:-.01em}
.metric span{display:block;margin-top:10px;font:11px/1.55 var(--mono);color:var(--muted)}
.project-cta{display:flex;justify-content:space-between;align-items:center;margin-top:22px;font-size:14px;font-weight:500;color:var(--accent)}
.arrow-dot{width:34px;height:34px;flex:none;border:1px solid var(--line);border-radius:50%;display:grid;place-items:center;color:var(--accent);transition:background-color .25s,border-color .25s,color .25s,transform .3s var(--ease)}
.project:hover .arrow-dot,.essay:hover .arrow-dot,.course:hover .arrow-dot{background:var(--accent);border-color:var(--accent);color:var(--paper);transform:translateX(3px)}

/* Writing */
.essay-list{margin-top:34px;border-top:1px solid var(--line)}
.essay{display:grid;grid-template-columns:56px minmax(0,1fr) auto;gap:24px;align-items:center;padding:30px 0;border-bottom:1px solid var(--line)}
.essay-num{font:12px var(--mono);color:var(--muted)}
.essay h3{font:400 clamp(25px,2.4vw,31px)/1.15 var(--serif);transition:color .2s}
.essay p{margin-top:8px;font-size:15px;line-height:1.6;color:var(--muted)}
.essay:hover h3{color:var(--accent)}
.essay-side{display:flex;align-items:center;gap:16px}
.source{font:10.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* Teaching */
.teaching{display:grid;grid-template-columns:minmax(0,1.1fr) minmax(0,1fr);margin-top:34px;border:1px solid var(--line);border-radius:20px;overflow:hidden;background:var(--soft)}
.teach-intro{padding:clamp(32px,4vw,52px)}
.teach-intro h3{font:400 clamp(34px,3.6vw,46px)/1.05 var(--serif)}
.teach-intro h3 em{color:var(--accent)}
.teach-intro p{max-width:440px;margin-top:18px;font-size:16px;line-height:1.7;color:var(--muted)}
.teach-stat{display:flex;align-items:center;gap:18px;margin-top:34px;padding-top:26px;border-top:1px solid var(--line-strong)}
.teach-stat b{font:400 68px/1 var(--serif);color:var(--accent)}
.teach-stat span{max-width:260px;font-size:14px;line-height:1.5;color:var(--muted)}
.course-list{display:flex;flex-direction:column;justify-content:center;padding:12px clamp(24px,3.5vw,44px);background:var(--surface);border-left:1px solid var(--line)}
.course{display:grid;grid-template-columns:40px minmax(0,1fr) auto;gap:12px;align-items:center;padding:24px 0;border-bottom:1px solid var(--line);font-size:16px;font-weight:500;transition:color .2s}
.course:last-child{border-bottom:0}
.course:hover{color:var(--accent)}
.course-num{font:11px var(--mono);color:var(--muted)}

/* Background timeline */
.timeline{display:grid;grid-template-columns:minmax(0,1.3fr) minmax(0,1fr);gap:clamp(40px,6vw,80px);margin-top:40px}
.tl-label{margin-bottom:26px;font:11.5px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.tl{position:relative;padding-left:30px}
.tl::before{content:"";position:absolute;left:5px;top:8px;bottom:8px;width:1px;background:var(--line-strong)}
.tl-item{position:relative;padding-bottom:34px}
.tl-item:last-child{padding-bottom:0}
.tl-item::before{content:"";position:absolute;left:-30px;top:6px;width:11px;height:11px;border-radius:50%;background:var(--paper);border:2px solid var(--line-strong)}
.tl-item.is-current::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 5px var(--tint)}
.tl-date{font:12px var(--mono);color:var(--accent);letter-spacing:.04em}
.tl-item h3{margin-top:6px;font-size:18px;font-weight:500;letter-spacing:-.015em;line-height:1.35}
.tl-org{margin-top:3px;font-size:14.5px;color:var(--muted)}
.tl-item ul{margin-top:12px;padding-left:18px}
.tl-item li{margin-top:6px;font-size:14px;line-height:1.65;color:var(--muted)}
.tl-item li::marker{color:var(--line-strong)}
.tl-item li strong{color:var(--ink);font-weight:500}

/* Contact */
.contact{position:relative;overflow:hidden;margin-top:clamp(72px,9vw,112px);padding:clamp(36px,6vw,72px);border-radius:24px;background:var(--block);color:var(--block-ink);scroll-margin-top:16px}
.contact-orbit{position:absolute;right:-140px;top:-140px;width:460px;height:460px;border-radius:50%;pointer-events:none;background:repeating-radial-gradient(circle,transparent 0 44px,var(--block-line) 44px 45px);-webkit-mask-image:radial-gradient(circle,#000 35%,transparent 72%);mask-image:radial-gradient(circle,#000 35%,transparent 72%)}
.contact-orbit i{position:absolute;inset:95px;animation:spin 18s linear infinite}
.contact-orbit i::before{content:"";position:absolute;top:-5px;left:50%;width:10px;height:10px;margin-left:-5px;border-radius:50%;background:var(--block-accent);box-shadow:0 0 18px var(--block-accent)}
@keyframes spin{to{transform:rotate(360deg)}}
.contact .section-index{color:var(--block-accent)}
.contact h2{position:relative;font:400 clamp(48px,6.4vw,84px)/.98 var(--serif);letter-spacing:-.015em}
.contact h2 em{color:var(--block-accent)}
.contact-lede{position:relative;max-width:520px;margin-top:18px;font-size:17px;line-height:1.7;color:var(--block-muted)}
.contact-actions{position:relative;display:flex;flex-wrap:wrap;gap:12px;margin-top:36px}
.btn-light{background:var(--block-accent);color:#13201d}
.btn-light:hover{background:var(--block-ink)}
.btn-outline-light{border-color:rgb(255 255 255/.22);color:var(--block-ink);background:rgb(255 255 255/.03)}
.btn-outline-light:hover{border-color:rgb(255 255 255/.5)}
.btn-outline-light svg{width:15px;height:15px;opacity:.8}
.contact-socials{position:relative;display:flex;flex-wrap:wrap;gap:12px 28px;margin-top:44px;padding-top:24px;border-top:1px solid var(--block-line);font-size:14px}
.contact-socials a{color:var(--block-muted);transition:color .2s}
.contact-socials a:hover{color:var(--block-ink)}
footer{display:flex;justify-content:space-between;gap:16px;padding:28px 0 40px;font:11.5px var(--mono);color:var(--muted);letter-spacing:.04em}
footer a:hover{color:var(--accent)}

/* Hybrid loop (hero) */
.lab{position:relative;margin:0;padding:16px 16px 14px;border:1px solid var(--line);border-radius:20px;background:var(--surface);box-shadow:var(--shadow)}
.lab-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:2px 4px 10px;font:10.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.lab-title{display:flex;align-items:center;gap:8px;color:var(--ink);white-space:nowrap}
.lab-sub{margin-left:2px;color:var(--muted)}
.lab-sub::before{content:"· "}
.lab-dot{width:7px;height:7px;border-radius:50%;background:var(--accent);box-shadow:0 0 0 3px var(--tint)}
.lab[data-state="opt"] .lab-dot{animation:blink 1.1s ease-in-out infinite}
@keyframes blink{50%{opacity:.35}}
.lab-step b{font-weight:500;color:var(--ink);font-variant-numeric:tabular-nums}
.lab-stages{display:flex;align-items:center;gap:4px;margin:0;padding:0 4px;list-style:none;font:10px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.lab-stages li{display:flex;align-items:center;gap:4px}
.lab-stages li::before{content:"";width:6px;height:6px;border-radius:50%;border:1px solid var(--line-strong);transition:background-color .25s,border-color .25s}
.lab-stages li:not(:last-child)::after{content:"→";margin:0 2px 0 4px;color:var(--line-strong)}
.lab-stages li:last-child::after{content:"↺";margin-left:6px;color:var(--line-strong)}
.lab-stages li.is-active{color:var(--accent)}
.lab-stages li.is-active::before{background:var(--accent);border-color:var(--accent);box-shadow:0 0 0 3px var(--tint)}
.lab-stages li.is-done::before{background:var(--accent);border-color:var(--accent)}
.loop{display:block;width:100%;height:auto;margin-top:6px;overflow:visible;touch-action:manipulation}
.loop.is-aiming{cursor:crosshair}
.loop .b-trail circle{fill:var(--accent)}
.loop .b-target{fill:none;stroke:var(--accent);stroke-width:1.4;stroke-dasharray:2.5 2.5}
.loop .b-target-line{stroke:var(--accent);stroke-width:1;stroke-dasharray:2 4}
.loop .b-ghost{fill:var(--accent);fill-opacity:.08;stroke:var(--accent);stroke-width:1;stroke-opacity:.6;opacity:0;pointer-events:none;transition:opacity .15s}
.lab-readout{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:16px;margin-top:6px;padding:12px 4px 0;border-top:1px solid var(--line)}
.ro-label{display:block;font:10px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.ro b{display:block;margin-top:4px;font:500 15px/1.2 var(--mono);font-variant-numeric:tabular-nums}
.meter{display:block;height:3px;margin-top:7px;border-radius:2px;background:var(--line);overflow:hidden}
.meter i{display:block;height:100%;background:var(--accent);transform-origin:left;transform:scaleX(0)}
.spark{display:block;width:100%;height:30px;margin-top:5px;overflow:visible}
.spark path{fill:none;stroke:var(--accent);stroke-width:1.5;stroke-linejoin:round;vector-effect:non-scaling-stroke}
.lab-log{height:94px;margin:12px 0 0;padding:9px 12px;overflow:hidden;list-style:none;border-radius:10px;background:var(--paper);border:1px solid var(--line);font:11px/1.6 var(--mono);display:flex;flex-direction:column;justify-content:flex-end}
.lab-log li{display:grid;grid-template-columns:44px minmax(0,1fr);gap:6px;white-space:pre;overflow:hidden;text-overflow:ellipsis;transition:opacity .3s}
.lab-log li:nth-last-child(2){opacity:.78}
.lab-log li:nth-last-child(3){opacity:.58}
.lab-log li:nth-last-child(4){opacity:.4}
.lab-log li:nth-last-child(5){opacity:.25}
.lab-log li:last-child .lg-text::after{content:"▍";margin-left:1px;color:var(--accent);animation:blink 1s steps(1) infinite}
.lg-role{color:var(--muted)}
.lg-agent{color:var(--accent)}
.lg-you{color:var(--ink);font-weight:500}
.lg-text{overflow:hidden;text-overflow:ellipsis;color:var(--ink)}
.lab-controls{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:8px 10px;margin-top:12px;padding:0 4px}
.lab-hint{font:10px var(--mono);letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.lab-gates{display:flex;gap:6px}
.lab-gates button{min-width:36px;height:32px;padding:0 10px;border:1px solid var(--line-strong);border-radius:9px;background:var(--paper);font:500 13px var(--mono);cursor:pointer;transition:border-color .2s,color .2s,background-color .2s}
.lab-gates button:hover{border-color:var(--accent);color:var(--accent)}
.lab-gates button:active{transform:translateY(1px)}
.lab-gates button:disabled{opacity:.45;cursor:default}
.lab-gates .gate-measure{background:var(--tint);border-color:transparent;color:var(--accent-strong)}
.lab figcaption{margin-top:12px;padding:12px 4px 2px;border-top:1px solid var(--line);font-size:12.5px;line-height:1.6;color:var(--muted)}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}

/* Research focus */
.focus-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:34px}
.focus-card{display:flex;flex-direction:column;padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.focus-icon{width:44px;height:44px;display:grid;place-items:center;border-radius:12px;background:var(--soft);color:var(--accent)}
.focus-icon svg{width:22px;height:22px;fill:none;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round}
.focus-card h3{margin-top:22px;font:400 27px/1.12 var(--serif)}
.focus-card>p{margin-top:12px;font-size:14.5px;line-height:1.65;color:var(--muted)}
.focus-card .focus-count{margin-top:auto;padding-top:22px;font:11.5px var(--mono);color:var(--muted)}
.focus-count b{font-weight:500;color:var(--accent)}
.focus-links{list-style:none;margin:12px 0 0;padding:0;border-top:1px solid var(--line)}
.focus-links a{display:grid;grid-template-columns:58px minmax(0,1fr) auto;gap:8px;align-items:baseline;padding:11px 0;border-bottom:1px solid var(--line);font-size:13.5px;line-height:1.4;transition:color .2s}
.focus-links li:last-child a{border-bottom:0;padding-bottom:0}
.focus-links a:hover{color:var(--accent)}
.focus-links .arr{color:var(--accent)}
.kind{font:10px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}

/* Project pages */
.topline .crumb{color:var(--accent);text-transform:none;letter-spacing:.02em;font-size:12px}
.topline .crumb:hover{text-decoration:underline;text-underline-offset:3px}
.side-back{display:inline-flex;align-items:center;gap:8px;margin-top:26px;font-size:13.5px;color:var(--accent)}
.side-back:hover{text-decoration:underline;text-underline-offset:3px}
.side-back+.side-nav{margin-top:16px}
.p-hero{display:grid;grid-template-columns:minmax(0,1fr) minmax(280px,360px);gap:clamp(28px,4vw,56px);align-items:start;padding:clamp(44px,6vw,80px) 0 clamp(32px,4vw,48px)}
.p-hero h1{font-size:clamp(44px,6vw,84px);line-height:.98;font-weight:500;letter-spacing:-.045em}
.p-tldr{max-width:620px;margin-top:24px;font-size:20px;line-height:1.6;color:var(--muted)}
.p-hero .hero-actions{margin-top:32px}
.glance{padding:24px;border:1px solid var(--line);border-radius:18px;background:var(--surface);box-shadow:var(--shadow)}
.glance-label,.question-label,.short-block h3,.takeaways h3,.fig-num{font:11px var(--mono);letter-spacing:.1em;text-transform:uppercase;color:var(--accent)}
.glance-metric{display:block;margin-top:10px;font:400 clamp(40px,4vw,54px)/1 var(--serif);letter-spacing:-.01em}
.glance-sub{margin-top:8px;font:11px/1.55 var(--mono);color:var(--muted)}
.glance-plain{margin-top:16px;padding-top:16px;border-top:1px solid var(--line);font-size:14px;line-height:1.6}
.glance-facts{display:grid;gap:10px;margin:18px 0 0}
.glance-facts div{display:grid;grid-template-columns:76px minmax(0,1fr);gap:10px;font-size:13.5px;line-height:1.5}
.glance-facts dt{font:10.5px/2 var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.glance-facts dd{margin:0}
.cap{text-transform:capitalize}
.stack{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:18px 0 0;padding:0}
.stack li{padding:4px 10px;border-radius:999px;background:var(--soft);font-size:12px;color:var(--accent-strong)}
.question{padding:clamp(28px,4vw,44px) clamp(24px,4vw,48px);border:1px solid var(--line);border-radius:20px;background:var(--soft)}
.question-text{max-width:860px;margin-top:14px;font:italic 400 clamp(26px,3vw,38px)/1.25 var(--serif)}
.short-grid{display:grid;grid-template-columns:minmax(0,1.55fr) minmax(0,1fr);gap:16px;margin-top:34px}
.short-block,.takeaways{padding:26px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.short-block p{margin-top:12px;font-size:16px;line-height:1.75}
.takeaways{margin-top:16px}
.takeaways ol{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;list-style:none;margin:16px 0 0;padding:0}
.takeaways li{padding-top:16px;border-top:2px solid var(--accent)}
.tk-num{font:400 34px/1 var(--serif);color:var(--accent)}
.takeaways li p{margin-top:10px;font-size:15px;line-height:1.65}
.glossary{margin-top:16px;border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.glossary summary{display:flex;align-items:center;gap:12px;padding:20px 26px;cursor:pointer;list-style:none;font-weight:500}
.glossary summary::-webkit-details-marker{display:none}
.glossary summary::after{content:"+";margin-left:12px;width:26px;height:26px;display:grid;place-items:center;border:1px solid var(--line);border-radius:50%;font:400 16px/1 var(--mono);color:var(--accent)}
.glossary[open] summary::after{content:"−"}
.glossary-count{margin-left:auto;font:11.5px var(--mono);color:var(--muted)}
.glossary-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:0 32px;margin:0;padding:0 26px 18px}
.glossary-grid div{padding:14px 0;border-top:1px solid var(--line)}
.glossary-grid dt{font-size:14.5px;font-weight:600}
.glossary-grid dd{margin:4px 0 0;font-size:14px;line-height:1.6;color:var(--muted)}
.findings{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin-top:34px}
.finding{padding:24px;border:1px solid var(--line);border-radius:16px;background:var(--surface)}
.finding-num{font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.finding p{margin-top:12px;font-size:14.5px;line-height:1.7}
.data-table{margin-top:16px;border:1px solid var(--line);border-radius:16px;background:var(--surface);overflow:hidden}
.table-scroll{overflow-x:auto}
.data-table table{width:100%;border-collapse:collapse;font-size:14px;font-variant-numeric:tabular-nums}
.table-caption{padding:14px 22px;font:11.5px/1.6 var(--mono);color:var(--muted);border-top:1px solid var(--line);background:var(--paper)}
.data-table th,.data-table td{padding:14px 22px;text-align:left;white-space:nowrap;border-bottom:1px solid var(--line)}
.data-table thead th{background:var(--soft);font:10.5px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--muted)}
.data-table tbody tr:last-child>*{border-bottom:0}
.data-table tbody th{font-weight:500}
.data-table tbody tr:hover{background:var(--soft)}
.limits{display:grid;grid-template-columns:36px minmax(0,1fr);gap:16px;margin-top:16px;padding:24px;border:1px dashed var(--line-strong);border-radius:16px}
.limits-icon{width:36px;height:36px;display:grid;place-items:center;border-radius:50%;background:var(--tint);color:var(--accent-strong);font:italic 20px var(--serif)}
.limits h3{font-size:16px;font-weight:600}
.limits p{margin-top:6px;font-size:14.5px;line-height:1.7;color:var(--muted)}
.story{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:16px;margin-top:34px}
.story-block{padding:26px 28px;border-left:2px solid var(--accent);border-radius:0 16px 16px 0;background:linear-gradient(90deg,var(--soft),transparent 85%)}
.story-block h3{font:400 26px/1.15 var(--serif)}
.story-block p{margin-top:12px;font-size:15px;line-height:1.8;color:var(--muted)}
.steps{margin-top:44px}
.stepper{position:relative;list-style:none;margin:0;padding:0}
.stepper li{position:relative;display:grid;grid-template-columns:36px minmax(0,1fr);gap:18px;padding-bottom:26px}
.stepper li:last-child{padding-bottom:0}
.stepper li:not(:last-child)::before{content:"";position:absolute;left:17.5px;top:40px;bottom:4px;width:1px;background:var(--line-strong)}
.step-num{width:36px;height:36px;display:grid;place-items:center;border:1px solid var(--accent);border-radius:50%;background:var(--paper);color:var(--accent);font:500 13px var(--mono)}
.stepper p{padding-top:6px;font-size:15.5px;line-height:1.7}
.figure-index{display:flex;flex-wrap:wrap;gap:8px;margin-top:30px}
.figure-index a{display:inline-flex;align-items:center;gap:8px;padding:7px 13px;border:1px solid var(--line);border-radius:999px;background:var(--surface);font-size:13px;transition:border-color .2s,color .2s}
.figure-index a span{font:11px var(--mono);color:var(--accent)}
.figure-index a:hover{border-color:var(--accent);color:var(--accent)}
.figures{display:grid;gap:22px;margin-top:22px}
.fig{margin:0;overflow:hidden;border:1px solid var(--line);border-radius:18px;background:var(--surface);scroll-margin-top:24px}
.fig-text{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.15fr);gap:28px;align-items:start;padding:24px 26px 20px}
.fig-text h3{margin-top:8px;font:400 24px/1.2 var(--serif)}
.fig-read{font-size:14.5px;line-height:1.7;color:var(--muted)}
.fig-read b{font-weight:600;color:var(--ink)}
.fig-image{position:relative;display:block;padding:clamp(12px,2vw,24px);border-top:1px solid var(--line);background:#fff;cursor:zoom-in}
[data-theme="dark"] .fig-image{background:#f1f0eb}
.fig-image img{width:100%;height:auto;margin:0 auto}
.fig-zoom{position:absolute;right:14px;bottom:14px;padding:6px 11px;border-radius:999px;background:rgb(32 46 45/.85);color:#f6f5f0;font:11px var(--mono);opacity:0;transform:translateY(4px);transition:opacity .2s,transform .2s}
.fig-image:hover .fig-zoom,.fig-image:focus-visible .fig-zoom{opacity:1;transform:none}
.lightbox{width:min(1200px,94vw);max-height:92vh;padding:0;border:0;border-radius:16px;background:var(--surface);color:var(--ink);box-shadow:0 40px 120px -20px rgb(0 0 0/.55)}
.lightbox::backdrop{background:rgb(15 23 21/.72);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}
.lightbox-bar{display:flex;align-items:center;gap:16px;padding:12px 14px 12px 20px;border-bottom:1px solid var(--line)}
.lightbox-caption{flex:1;min-width:0;font-size:14px;font-weight:500}
.lightbox-open{white-space:nowrap;font-size:13px;color:var(--accent)}
.lightbox-close{width:34px;height:34px;flex:none;border:1px solid var(--line);border-radius:50%;background:var(--paper);cursor:pointer}
.lightbox-stage{display:grid;place-items:center;max-height:calc(92vh - 60px);padding:20px;overflow:auto;background:#fff}
.lightbox-stage img{max-width:100%;max-height:calc(92vh - 100px);height:auto;object-fit:contain}
.resource-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:12px;margin-top:30px}
.resource{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:6px 14px;align-items:center;padding:20px 22px;border:1px solid var(--line);border-radius:14px;background:var(--surface);transition:border-color .25s,transform .3s var(--ease)}
.resource-host{font:10.5px var(--mono);letter-spacing:.04em;color:var(--muted)}
.resource-label{grid-column:1;font-size:15px;font-weight:500;line-height:1.4}
.resource .arrow-dot{grid-column:2;grid-row:1/3}
.resource:hover{border-color:var(--accent);transform:translateY(-2px)}
.resource:hover .arrow-dot{background:var(--accent);border-color:var(--accent);color:var(--paper)}
.pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:16px}
.pager-card{display:flex;flex-direction:column;gap:6px;padding:22px 24px;border:1px solid var(--line);border-radius:16px;background:var(--surface);transition:border-color .25s,transform .3s var(--ease),box-shadow .3s var(--ease)}
.pager-card.next{align-items:flex-end;text-align:right}
.pager-dir{font:11px var(--mono);letter-spacing:.08em;text-transform:uppercase;color:var(--accent)}
.pager-title{font:400 26px/1.15 var(--serif)}
.pager-metric{font:11.5px var(--mono);color:var(--muted)}
.pager-card:hover{border-color:var(--accent);transform:translateY(-2px);box-shadow:var(--shadow)}

/* Motion */
@media (prefers-reduced-motion:no-preference){
  .hero h1 .line,.hero-lede,.hero-actions,.hero-stats,.lab{animation:rise .9s var(--ease) both;animation-delay:calc(var(--i,0)*90ms)}
  @keyframes rise{from{opacity:0;transform:translateY(18px)}to{opacity:1;transform:none}}
  .js-reveal .reveal{opacity:0;transform:translateY(18px);transition:opacity .8s var(--ease),transform .8s var(--ease);transition-delay:calc(var(--d,0)*70ms)}
  .js-reveal .reveal.is-in{opacity:1;transform:none}
}
@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  .pulse::after,.contact-orbit i{animation:none}
  .project,.project:hover{transition:none;transform:none}
}

/* Responsive */
@media (max-width:1100px){
  .shell{grid-template-columns:236px minmax(0,1fr)}
  .sidebar{padding:32px 20px 24px 24px}
  .portrait{width:46px;height:46px}
  .name{font-size:16px}
  .hero{grid-template-columns:1fr}
  .lab{max-width:520px}
  .focus-grid{grid-template-columns:1fr}
  .teaching{grid-template-columns:1fr}
  .course-list{border-left:0;border-top:1px solid var(--line)}
}
@media (max-width:820px){
  html{scroll-padding-top:118px}
  .shell{display:block}
  .sidebar{position:sticky;top:0;z-index:20;height:auto;padding:12px 20px 0;border-right:0;border-bottom:1px solid var(--line);background:color-mix(in srgb,var(--paper) 88%,transparent);-webkit-backdrop-filter:blur(14px);backdrop-filter:blur(14px);overflow:visible}
  .side-top{align-items:center}
  .identity{gap:10px}
  .portrait{width:34px;height:34px;box-shadow:0 0 0 2px var(--paper),0 0 0 3px var(--line-strong)}
  .name{font-size:15px}
  .role{font-size:10px;margin-top:1px}
  .theme-toggle{width:34px;height:34px}
  .toggle-mobile{display:grid}
  .side-bio,.side-bottom{display:none}
  .side-nav{flex-direction:row;gap:2px;margin:10px -20px 0;padding:0 14px 8px;overflow-x:auto;scrollbar-width:none}
  .side-nav::-webkit-scrollbar{display:none}
  .side-nav a{white-space:nowrap;font-size:13px;padding:8px 10px}
  .side-nav a span{display:none}
  .side-nav a[aria-current]::before{left:10px;right:10px;top:auto;bottom:2px;width:auto;height:2px;margin:0}
  main{padding:0 20px}
  .topline{padding-top:28px;font-size:10px}
  .topline .clock-wrap{display:none}
  .hero{grid-template-columns:1fr;padding:40px 0 40px}
  .hero-lede{font-size:17px}
  .hero-stats{grid-template-columns:repeat(2,minmax(0,1fr))}
  .stat{padding:16px 16px 16px}
  .stat:nth-child(3){border-left:0;padding-left:0}
  .segmented{flex-wrap:nowrap;max-width:100%;overflow-x:auto;scrollbar-width:none}
  .segmented::-webkit-scrollbar{display:none}
  .segmented button{flex:none;padding:8px 11px;font-size:13px}
  .segmented button i{margin-left:4px}
  section,.contact{scroll-margin-top:118px}
  .news-item{grid-template-columns:1fr;gap:6px}
  .paper{grid-template-columns:1fr;gap:10px;padding:28px 0}
  .paper-year{font-size:20px}
  .essay{grid-template-columns:minmax(0,1fr) auto;gap:16px}
  .essay-num,.source{display:none}
  .timeline{grid-template-columns:1fr}
  .project-grid{grid-template-columns:1fr}
  .contact{border-radius:18px}
  .contact-orbit{right:-220px;top:-220px}
  footer{flex-direction:column;gap:8px}
}

@media (max-width:1100px){
  .p-hero{grid-template-columns:1fr}
  .glance{max-width:520px}
  .findings{grid-template-columns:1fr}
  .short-grid{grid-template-columns:1fr}
  .fig-text{grid-template-columns:1fr;gap:10px}
}
@media (max-width:820px){
  .lab{padding:14px 12px 12px}
  .lab-sub{display:none}
  .lab-stages{letter-spacing:.02em;gap:2px}
  .side-back{display:none}
  .short-grid,.takeaways ol,.glossary-grid,.pager{grid-template-columns:1fr}
  .takeaways ol{gap:18px}
  .p-tldr{font-size:18px}
  .glossary summary{padding:18px 20px}
  .glossary-grid{padding:0 20px 14px}
  .short-block,.takeaways,.finding,.focus-card{padding:22px}
  .story-block{padding:22px}
  .pager-card.next{align-items:flex-start;text-align:left}
  .topline .crumb{font-size:11px}
}

/* Print: a clean, light, single-column document */
@media print{
  :root,:root[data-theme="dark"]{--paper:#fff;--surface:#fff;--ink:#111;--muted:#444;--line:#ddd;--line-strong:#bbb;--accent:#216653;--accent-strong:#174c3e;--soft:#f3f5f1;--tint:#e3ede0;--block:#fff;--block-ink:#111;--block-muted:#444;--block-line:#ddd;--block-accent:#216653;--shadow:none}
  body{font-size:11pt}
  .sidebar,.progress,.skip,.topline,.hero-actions,.lab-controls,.lab-readout,.lab-log,.lab-stages,.toolbar,.more-row,.contact-orbit,.contact-actions,.theme-toggle,.pager,.figure-index,.fig-zoom,footer a{display:none!important}
  .shell{display:block} main{padding:0}
  .paper[hidden]{display:grid!important} .project[hidden]{display:flex!important}
  .reveal,.hero h1 .line,.hero-lede,.hero-stats,.lab{opacity:1!important;transform:none!important;animation:none!important}
  section{padding-top:20pt}
  .project,.focus-card,.finding,.fig,.glance,.paper,.tl-item,.story-block{break-inside:avoid;box-shadow:none}
  .contact{border:1px solid var(--line);margin-top:24pt}
}