/* Saurav Sharma — research portfolio. Editorial/scientific design system. */
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-opsz-normal.woff2") format("woff2");font-weight:200 800;font-style:normal;font-display:swap}
@font-face{font-family:"Newsreader";src:url("fonts/newsreader-latin-opsz-italic.woff2") format("woff2");font-weight:200 800;font-style:italic;font-display:swap}
@font-face{font-family:"Inter";src:url("fonts/inter-latin-opsz-normal.woff2") format("woff2");font-weight:100 900;font-style:normal;font-display:swap}
@font-face{font-family:"JetBrains Mono";src:url("fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");font-weight:100 800;font-style:normal;font-display:swap}

:root{
  --bg:#f4f2ed;--bg-2:#ebe8e1;--panel:#fbfaf7;--ink:#111316;--ink-2:#353a40;--muted:#62666d;--faint:#9a9ca0;
  --line:rgba(17,19,22,.13);--line-2:rgba(17,19,22,.24);
  --accent:#a8401a;--accent-2:#c8582c;--accent-soft:rgba(168,64,26,.10);
  --ok:#2f6b4f;
  --serif:"Newsreader","Iowan Old Style","Georgia",serif;
  --sans:"Inter",ui-sans-serif,system-ui,-apple-system,"Segoe UI",sans-serif;
  --mono:"JetBrains Mono",ui-monospace,"SFMono-Regular",Menlo,monospace;
  --max:1240px;--gutter:clamp(20px,4vw,48px);
  --ease:cubic-bezier(.2,.7,.2,1);
  color-scheme:light;
}
:root[data-theme="dark"]{
  --bg:#0c0d0f;--bg-2:#141619;--panel:#111316;--ink:#ecebe6;--ink-2:#c6c5bf;--muted:#92948f;--faint:#62645f;
  --line:rgba(236,235,230,.12);--line-2:rgba(236,235,230,.24);
  --accent:#e2784b;--accent-2:#f08f62;--accent-soft:rgba(226,120,75,.13);--ok:#6fb08f;
  color-scheme:dark;
}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth;scroll-padding-top:88px}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--sans);font-size:17px;line-height:1.62;font-optical-sizing:auto;-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}
img,svg{display:block;max-width:100%}
a{color:inherit;text-decoration:none}
::selection{background:var(--accent);color:var(--bg)}
:focus-visible{outline:2px solid var(--accent);outline-offset:3px;border-radius:2px}
.skip{position:absolute;left:-9999px;top:12px;z-index:100;background:var(--ink);color:var(--bg);padding:10px 14px;font-family:var(--mono);font-size:13px}
.skip:focus{left:12px}
.wrap{max-width:var(--max);margin:0 auto;padding:0 var(--gutter)}

/* ---------- header ---------- */
.progress{position:fixed;top:0;left:0;height:2px;width:100%;transform-origin:0 50%;transform:scaleX(var(--p,0));background:var(--accent);z-index:60}
.site-header{position:sticky;top:0;z-index:50;background:var(--bg);border-bottom:1px solid transparent;transition:border-color .3s var(--ease)}
.site-header.scrolled{border-bottom-color:var(--line)}
.nav{display:flex;align-items:center;justify-content:space-between;gap:24px;height:68px}
.brand{display:flex;align-items:baseline;gap:12px;white-space:nowrap}
.brand-name{font-family:var(--serif);font-size:21px;letter-spacing:-.01em;font-weight:500}
.brand-role{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.nav-links{display:flex;align-items:center;gap:4px}
.nav-links a{font-size:14px;color:var(--ink-2);padding:8px 12px;border-radius:999px;transition:color .2s,background .2s}
.nav-links a:hover{color:var(--ink);background:var(--bg-2)}
.nav-links a[aria-current="page"]{color:var(--ink);background:var(--bg-2)}
.nav-tools{display:flex;align-items:center;gap:6px}
.icon-btn{appearance:none;border:1px solid var(--line);background:transparent;color:var(--ink-2);width:36px;height:36px;border-radius:999px;display:inline-grid;place-items:center;cursor:pointer;transition:border-color .2s,color .2s}
.icon-btn:hover{border-color:var(--line-2);color:var(--ink)}
.icon-btn svg{width:16px;height:16px}
.menu-btn{display:none}
@media (max-width:900px){
  .brand-role{display:none}
  .menu-btn{display:inline-grid}
  .nav-links{position:fixed;inset:68px 0 auto 0;flex-direction:column;align-items:stretch;gap:0;background:var(--bg);border-bottom:1px solid var(--line);padding:8px var(--gutter) 20px;transform:translateY(-8px);opacity:0;pointer-events:none;transition:opacity .25s var(--ease),transform .25s var(--ease)}
  .nav-links a{border-radius:0;padding:14px 0;border-bottom:1px solid var(--line);font-size:17px;background:none!important}
  .nav-open .nav-links{opacity:1;transform:none;pointer-events:auto}
}

/* ---------- type ---------- */
.eyebrow,.kicker,.mono{font-family:var(--mono);font-size:12px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:450}
.eyebrow{display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:18px;height:1px;background:var(--accent)}
h1,h2,h3,.display{font-family:var(--serif);font-weight:400;letter-spacing:-.018em;line-height:1.06;margin:0;color:var(--ink)}
h1{font-size:clamp(40px,6.2vw,84px)}
h2{font-size:clamp(30px,3.8vw,50px);line-height:1.08}
h3{font-size:clamp(21px,2vw,26px);line-height:1.2;letter-spacing:-.01em}
p{margin:0 0 1em}
.lede{font-family:var(--serif);font-size:clamp(20px,2vw,26px);line-height:1.4;color:var(--ink-2);letter-spacing:-.005em;max-width:42ch}
.lede em,.display em{font-style:italic;color:var(--accent)}
.small{font-size:15px;color:var(--muted)}
.muted{color:var(--muted)}
.inline-link{color:var(--ink);border-bottom:1px solid var(--accent);padding-bottom:1px;transition:color .2s}
.inline-link:hover{color:var(--accent)}
.arrow{display:inline-block;transition:transform .3s var(--ease)}
a:hover .arrow{transform:translateX(4px)}

/* ---------- hero ---------- */
.hero{padding:clamp(56px,9vw,120px) 0 clamp(48px,7vw,96px);border-bottom:1px solid var(--line)}
.hero-grid{display:grid;grid-template-columns:minmax(0,1.08fr) minmax(0,.92fr);gap:clamp(32px,5vw,80px);align-items:center}
.hero-id{display:flex;flex-direction:column;gap:6px;margin:22px 0 30px}
.hero-name{font-family:var(--serif);font-size:clamp(46px,7vw,96px);line-height:.98;letter-spacing:-.03em;font-weight:400}
.hero-role{font-family:var(--serif);font-style:italic;font-size:clamp(22px,2.4vw,32px);color:var(--ink-2);letter-spacing:-.01em}
.hero-statement{font-family:var(--serif);font-size:clamp(22px,2.3vw,30px);line-height:1.28;letter-spacing:-.012em;max-width:30ch;margin:0 0 18px}
.hero-body{font-size:17px;color:var(--ink-2);max-width:58ch}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin-top:28px;padding:0;list-style:none}
.chip{font-family:var(--mono);font-size:12px;letter-spacing:.02em;color:var(--ink-2);border:1px solid var(--line);border-radius:999px;padding:6px 12px;display:inline-flex;gap:8px;align-items:center;background:var(--panel)}
.chip b{font-weight:500;color:var(--muted);text-transform:uppercase;letter-spacing:.06em;font-size:10.5px}
.chip.primary{border-color:var(--ink);color:var(--ink)}
.chip.primary::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}
@media (max-width:960px){.hero-grid{grid-template-columns:1fr}}

/* ---------- figures / instruments ---------- */
.figure{position:relative;border:1px solid var(--line);background:var(--panel);border-radius:4px;overflow:hidden}
.figure-head{display:flex;justify-content:space-between;align-items:center;gap:12px;padding:12px 16px;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.figure-head .live{display:inline-flex;align-items:center;gap:8px}
.figure-head .live::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);animation:blink 2.4s infinite}
.figure-body{padding:clamp(12px,2vw,22px)}
.figure figcaption{padding:12px 16px 14px;border-top:1px solid var(--line);font-size:13.5px;color:var(--muted);line-height:1.5}
.figure figcaption b{font-family:var(--mono);font-weight:500;font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--ink-2);margin-right:6px}
@keyframes blink{0%,100%{opacity:1}50%{opacity:.25}}

.dg{width:100%;height:auto;overflow:visible;font-family:var(--mono)}
.dg text{fill:var(--muted);font-size:11px;letter-spacing:.02em}
.dg .t-ink{fill:var(--ink)}
.dg .t-acc{fill:var(--accent)}
.dg .t-serif{font-family:var(--serif);font-size:15px;letter-spacing:0;fill:var(--ink)}
.dg .grid line{stroke:var(--line);stroke-width:1}
.dg .ax{stroke:var(--line-2);stroke-width:1}
.dg .s-ink{stroke:var(--ink);fill:none;stroke-width:1.6}
.dg .s-mut{stroke:var(--faint);fill:none;stroke-width:1.3}
.dg .s-acc{stroke:var(--accent);fill:none;stroke-width:1.8}
.dg .dash{stroke-dasharray:4 5}
.dg .f-ink{fill:var(--ink)}
.dg .f-acc{fill:var(--accent)}
.dg .f-bg{fill:var(--panel)}
.dg .f-soft{fill:var(--accent-soft)}
.dg .hatch{fill:url(#hatch)}
/* draw-on animation: elements with .draw get pathLength=1 */
.dg .draw{stroke-dasharray:1;stroke-dashoffset:1}
.dg .draw.dash{stroke-dasharray:none}
.in .dg .draw{animation:draw 1.6s var(--ease) forwards;animation-delay:var(--d,0s)}
.dg .pop{opacity:0;transform-box:fill-box;transform-origin:center;transform:scale(.4)}
.in .dg .pop{animation:pop .6s var(--ease) forwards;animation-delay:var(--d,0s)}
.dg .fade{opacity:0}
.in .dg .fade{animation:fade .8s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes draw{to{stroke-dashoffset:0}}
@keyframes pop{to{opacity:1;transform:none}}
@keyframes fade{to{opacity:1}}
.dg .pulse{transform-box:fill-box;transform-origin:center;animation:pulse 2.6s var(--ease) infinite;animation-delay:var(--d,0s)}
@keyframes pulse{0%{opacity:.9;transform:scale(.6)}80%,100%{opacity:0;transform:scale(2.6)}}
.paused .dg .pulse,.paused .live::before{animation-play-state:paused}

/* ---------- sections ---------- */
.section{padding:clamp(64px,9vw,128px) 0;border-bottom:1px solid var(--line)}
.section:last-of-type{border-bottom:0}
.sec-head{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:clamp(24px,5vw,80px);align-items:end;margin-bottom:clamp(36px,5vw,64px)}
.sec-head h2{margin-top:16px;max-width:18ch}
.sec-head p{color:var(--ink-2);max-width:56ch;margin:0}
.sec-num{font-family:var(--mono);font-size:12px;color:var(--accent);letter-spacing:.06em}
@media (max-width:860px){.sec-head{grid-template-columns:1fr;align-items:start}}

/* ---------- research records ---------- */
.records{border-top:1px solid var(--ink)}
.record{display:grid;grid-template-columns:64px minmax(0,1.25fr) minmax(0,1fr) 220px;gap:clamp(16px,3vw,40px);padding:clamp(28px,3.5vw,44px) 0;border-bottom:1px solid var(--line);align-items:start;position:relative;transition:background .4s var(--ease)}
.record::before{content:"";position:absolute;left:0;top:-1px;height:1px;width:0;background:var(--accent);transition:width .7s var(--ease)}
.record:hover::before{width:100%}
.record-idx{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:6px}
.record h3{font-size:clamp(24px,2.5vw,34px);margin:10px 0 12px;transition:color .25s}
.record:hover h3{color:var(--accent)}
.record-desc{color:var(--ink-2);margin:0}
.record-meta{display:flex;flex-direction:column;gap:14px;padding-top:6px}
.record-status{font-family:var(--mono);font-size:11.5px;letter-spacing:.04em;color:var(--ink-2)}
.record-status::before{content:"● ";color:var(--accent)}
.record-glyph{border:1px solid var(--line);background:var(--panel);border-radius:3px;aspect-ratio:11/7;padding:10px}
.record-link::after{content:"";position:absolute;inset:0}
.record-cta{font-family:var(--mono);font-size:12px;letter-spacing:.04em;color:var(--ink);text-transform:uppercase}
@media (max-width:1060px){.record{grid-template-columns:48px minmax(0,1fr) 200px}.record .record-meta{grid-column:2/3}.record-glyph{grid-column:3;grid-row:1/3}}
@media (max-width:680px){.record{grid-template-columns:1fr}.record .record-meta,.record-glyph{grid-column:auto;grid-row:auto}.record-glyph{max-width:320px}}

.tags{display:flex;flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.03em;color:var(--ink-2);border:1px solid var(--line);padding:3px 8px;border-radius:2px;white-space:nowrap}
.tag.neg{border-color:var(--accent);color:var(--accent)}

/* ---------- evidence blocks ---------- */
.evidence{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));border-top:1px solid var(--line);border-left:1px solid var(--line)}
.ev{border-right:1px solid var(--line);border-bottom:1px solid var(--line);padding:24px 22px 22px;display:flex;flex-direction:column;gap:14px;background:var(--panel);min-height:220px}
.ev-ctx{font-family:var(--mono);font-size:11px;letter-spacing:.05em;text-transform:uppercase;color:var(--accent);display:flex;gap:8px;align-items:center}
.ev-ctx::before{content:"";width:5px;height:5px;background:var(--accent)}
.ev-fig{font-family:var(--serif);font-size:clamp(46px,4.6vw,62px);line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums lining-nums;display:flex;align-items:baseline}
.ev-fig .den{color:var(--faint);font-size:.62em;margin-left:2px}
.ev-label{font-size:15px;color:var(--ink-2);line-height:1.45;margin:0;margin-top:auto}
.ev.neg .ev-ctx{color:var(--ink-2)}
.ev.neg .ev-ctx::before{background:transparent;border:1px solid var(--ink-2)}
.ev.neg{background:repeating-linear-gradient(135deg,transparent 0 9px,var(--accent-soft) 9px 10px),var(--panel)}
.dots{display:grid;grid-template-columns:repeat(var(--cols,20),1fr);gap:3px;max-width:100%}
.dots i{display:block;aspect-ratio:1;border:1px solid var(--line-2);border-radius:1px;transition:background .3s,border-color .3s}
.dots i.on{background:var(--ink);border-color:var(--ink)}
.dots.acc i.on{background:var(--accent);border-color:var(--accent)}
.dots-row{display:grid;grid-template-columns:auto 1fr;gap:6px 10px;align-items:center;font-family:var(--mono);font-size:10.5px;color:var(--muted)}
.bar{height:6px;background:var(--bg-2);border-radius:1px;position:relative;overflow:hidden}
.bar span{position:absolute;inset:0 auto 0 0;width:0;background:var(--accent);transition:width 1.4s var(--ease)}
.bar.ink span{background:var(--ink)}
.in .bar span{width:var(--w)}
.ev-note{margin-top:18px;font-size:14px;color:var(--muted);max-width:80ch;display:flex;gap:10px}
.ev-note::before{content:"※";color:var(--accent)}

/* ---------- AEI ---------- */
.aei{background:var(--ink);color:var(--bg);border-bottom:0}
.aei .eyebrow,.aei .muted,.aei .small{color:color-mix(in srgb,var(--bg) 62%,transparent)}
.aei h2,.aei h3{color:var(--bg)}
.aei .sec-head p{color:color-mix(in srgb,var(--bg) 78%,transparent)}
.pipeline{display:grid;grid-template-columns:repeat(6,1fr);gap:0;position:relative;margin:0;padding:0;list-style:none;counter-reset:st}
.pipeline li{position:relative;padding:18px 16px 18px 0;border-top:1px solid color-mix(in srgb,var(--bg) 22%,transparent);counter-increment:st}
.pipeline li::before{content:"0" counter(st);display:block;font-family:var(--mono);font-size:11px;color:color-mix(in srgb,var(--bg) 50%,transparent);margin-bottom:10px}
.pipeline li::after{content:"";position:absolute;top:-1px;left:0;height:1px;width:0;background:var(--accent-2)}
.in .pipeline li::after{animation:fill 0.7s var(--ease) forwards;animation-delay:calc(var(--i)*.35s)}
.pipeline li span{font-family:var(--serif);font-size:clamp(18px,1.7vw,22px);line-height:1.2;display:block}
.pipeline .node{position:absolute;top:-4px;left:0;width:7px;height:7px;border-radius:50%;background:var(--ink);border:1px solid color-mix(in srgb,var(--bg) 50%,transparent)}
.in .pipeline .node{animation:nodeon .4s forwards;animation-delay:calc(var(--i)*.35s)}
@keyframes fill{to{width:100%}}
@keyframes nodeon{to{background:var(--accent-2);border-color:var(--accent-2)}}
.pipeline-cap{font-family:var(--mono);font-size:12px;color:color-mix(in srgb,var(--bg) 55%,transparent);margin-top:14px}
@media (max-width:860px){.pipeline{grid-template-columns:1fr 1fr}.pipeline li{padding-right:12px}}
.boundary{display:grid;grid-template-columns:1fr 1fr;margin-top:clamp(40px,5vw,64px);border:1px solid color-mix(in srgb,var(--bg) 20%,transparent)}
.boundary>div{padding:26px}
.boundary>div+div{border-left:1px dashed color-mix(in srgb,var(--bg) 30%,transparent);background:repeating-linear-gradient(135deg,transparent 0 10px,color-mix(in srgb,var(--bg) 6%,transparent) 10px 11px)}
.boundary h3{font-size:22px;margin:10px 0 14px}
.boundary ul{margin:0;padding:0;list-style:none}
.boundary li{padding:9px 0;border-top:1px solid color-mix(in srgb,var(--bg) 12%,transparent);font-size:15.5px;color:color-mix(in srgb,var(--bg) 85%,transparent)}
.boundary .lock{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent-2)}
@media (max-width:760px){.boundary{grid-template-columns:1fr}.boundary>div+div{border-left:0;border-top:1px dashed color-mix(in srgb,var(--bg) 30%,transparent)}}
.aei .ev{background:transparent;border-color:color-mix(in srgb,var(--bg) 16%,transparent)}
.aei .evidence{border-color:color-mix(in srgb,var(--bg) 16%,transparent)}
.aei .ev-label{color:color-mix(in srgb,var(--bg) 80%,transparent)}
.aei .ev-fig .den{color:color-mix(in srgb,var(--bg) 40%,transparent)}
.aei .ev-ctx{color:var(--accent-2)}.aei .ev-ctx::before{background:var(--accent-2)}
.aei .dots i{border-color:color-mix(in srgb,var(--bg) 30%,transparent)}
.aei .dots i.on{background:var(--bg);border-color:var(--bg)}
.aei .dots.acc i.on{background:var(--accent-2);border-color:var(--accent-2)}
.aei .dots-row{color:color-mix(in srgb,var(--bg) 55%,transparent)}
.aei .btn{border-color:color-mix(in srgb,var(--bg) 40%,transparent);color:var(--bg)}
.aei .btn:hover{background:var(--bg);color:var(--ink)}

/* ---------- standards / principles ---------- */
.principles{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:0;border-top:1px solid var(--ink)}
.principle{padding:26px 26px 26px 0;border-bottom:1px solid var(--line)}
.principle+.principle{padding-left:26px;border-left:1px solid var(--line)}
.principle h3{font-size:22px;margin:12px 0 10px}
.principle p{color:var(--ink-2);font-size:15.5px;margin:0}
@media (max-width:760px){.principle+.principle{padding-left:0;border-left:0}}

/* ---------- background profile ---------- */
.profile{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink)}
.profile>div{padding:28px 28px 28px 0}
.profile>div+div{padding-left:28px;border-left:1px solid var(--line)}
.profile .rank{font-family:var(--mono);font-size:11px;color:var(--accent);letter-spacing:.06em;text-transform:uppercase}
.profile h3{margin:12px 0 12px}
.profile p{color:var(--ink-2);font-size:15.5px;margin:0}
@media (max-width:860px){.profile{grid-template-columns:1fr}.profile>div+div{padding-left:0;border-left:0;border-top:1px solid var(--line)}}

/* ---------- buttons ---------- */
.btn{display:inline-flex;align-items:center;gap:10px;font-family:var(--mono);font-size:12.5px;letter-spacing:.04em;text-transform:uppercase;padding:12px 18px;border:1px solid var(--ink);border-radius:999px;color:var(--ink);transition:background .25s,color .25s}
.btn:hover{background:var(--ink);color:var(--bg)}
.btn.solid{background:var(--ink);color:var(--bg)}
.btn.solid:hover{background:var(--accent);border-color:var(--accent)}
.actions{display:flex;flex-wrap:wrap;gap:10px;margin-top:32px}

/* ---------- writing card ---------- */
.note-card{display:grid;grid-template-columns:minmax(0,1fr) auto;gap:32px;align-items:end;padding:clamp(28px,4vw,48px);border:1px solid var(--line);background:var(--panel);border-radius:4px;transition:border-color .3s}
.note-card:hover{border-color:var(--ink)}
.note-card h3{font-size:clamp(26px,3vw,40px);margin:14px 0 14px;max-width:24ch}
.note-card p{color:var(--ink-2);max-width:62ch;margin:0}
@media (max-width:700px){.note-card{grid-template-columns:1fr}}

/* ---------- contact ---------- */
.contact{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:40px;align-items:end}
.contact-links{display:flex;flex-direction:column;border-top:1px solid var(--ink)}
.contact-links a,.contact-links .pending{display:flex;justify-content:space-between;padding:16px 0;border-bottom:1px solid var(--line);font-family:var(--mono);font-size:13px}
.contact-links .pending{color:var(--muted)}
.contact-links a{transition:color .2s,padding .25s}
.contact-links a:hover{color:var(--accent);padding-left:6px}
.contact-links .cv{color:var(--muted);display:inline-flex;gap:8px;min-width:0;overflow-wrap:anywhere;text-align:right}
.priority{font-family:var(--serif);font-size:clamp(20px,2.1vw,26px);line-height:1.4;color:var(--ink-2);max-width:40ch;margin:20px 0 0}
.cta-line{font-family:var(--mono);font-size:12.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);margin:22px 0 0}
.btn.is-pending{border-style:dashed;border-color:var(--line-2);color:var(--muted);cursor:not-allowed;flex-direction:row}
.btn.is-pending:hover{background:none;color:var(--muted)}
.btn .pend{font-size:10.5px;letter-spacing:.06em;color:var(--muted);opacity:.8;padding-left:10px;border-left:1px solid var(--line-2)}
.artifact-actions{margin-top:24px}
@media (max-width:860px){.contact{grid-template-columns:1fr}}

/* ---------- inner page hero ---------- */
.page-hero{padding:clamp(40px,7vw,96px) 0 clamp(40px,6vw,72px);border-bottom:1px solid var(--line)}
.crumbs{font-family:var(--mono);font-size:12px;color:var(--muted);margin-bottom:clamp(28px,4vw,48px);display:flex;flex-wrap:wrap;gap:8px}
.crumbs a:hover{color:var(--accent)}
.crumbs span[aria-hidden]{color:var(--faint)}
.page-hero h1{margin:18px 0 22px;max-width:18ch}
.page-hero .lede{max-width:46ch}
.ph-grid{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:clamp(28px,5vw,72px);align-items:end}
.factsheet{border-top:1px solid var(--ink);font-size:14px}
.factsheet div{display:grid;grid-template-columns:100px 1fr;gap:12px;padding:11px 0;border-bottom:1px solid var(--line)}
.factsheet dt{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);padding-top:2px}
.factsheet dd{margin:0;color:var(--ink)}
.factsheet dl{margin:0}
@media (max-width:900px){.ph-grid{grid-template-columns:1fr}}
.status{display:inline-flex;align-items:center;gap:8px;font-family:var(--mono);font-size:12px;letter-spacing:.03em;padding:6px 12px;border:1px solid var(--line-2);border-radius:999px;color:var(--ink-2)}
.status::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent)}

/* ---------- article layout ---------- */
.article{display:grid;grid-template-columns:220px minmax(0,1fr);gap:clamp(32px,6vw,96px);padding:clamp(48px,7vw,96px) 0}
.toc{position:sticky;top:96px;align-self:start;font-size:13.5px}
.toc ol{list-style:none;margin:14px 0 0;padding:0;border-left:1px solid var(--line)}
.toc a{display:block;padding:6px 0 6px 14px;color:var(--muted);margin-left:-1px;border-left:1px solid transparent;transition:color .2s,border-color .2s}
.toc a:hover{color:var(--ink)}
.toc a.active{color:var(--ink);border-left-color:var(--accent)}
@media (max-width:960px){.article{grid-template-columns:1fr}.toc{display:none}}
.prose{max-width:720px}
.prose>section{padding-bottom:clamp(36px,5vw,56px);margin-bottom:clamp(36px,5vw,56px);border-bottom:1px solid var(--line)}
.prose>section:last-child{border-bottom:0;margin-bottom:0}
.prose h2{font-size:clamp(28px,3vw,38px);margin:10px 0 20px}
.prose .sec-label{font-family:var(--mono);font-size:11.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent)}
.prose p,.prose li{color:var(--ink-2);font-size:17.5px;line-height:1.7}
.prose strong{color:var(--ink);font-weight:550}
.prose ul{padding-left:1.1em}
.prose li{margin:.35em 0}
.prose li::marker{color:var(--accent)}
.prose .evidence{margin:28px 0 8px}
.prose .wide{margin-left:0;margin-right:0}
.code-line{font-family:var(--mono);font-size:14px;padding:16px 18px;background:var(--ink);color:var(--bg);border-radius:3px;overflow-x:auto;white-space:nowrap;margin:20px 0}
.code-line::before{content:"$ ";color:var(--accent-2)}
.code-line.plain::before{content:""}
.callout{border-left:2px solid var(--accent);background:var(--accent-soft);padding:16px 20px;font-size:15.5px;color:var(--ink-2);margin:24px 0}
.callout strong{color:var(--ink)}
.limits{border:1px solid var(--line-2);padding:22px 24px;background:repeating-linear-gradient(135deg,transparent 0 10px,var(--accent-soft) 10px 11px),var(--panel)}
.limits .mono{color:var(--accent);display:block;margin-bottom:8px}
.limits p:last-child{margin:0}
.status-grid{display:grid;grid-template-columns:repeat(3,1fr);border-top:1px solid var(--ink);margin-top:8px}
.status-grid>div{padding:18px 18px 18px 0;border-bottom:1px solid var(--line)}
.status-grid>div+div{padding-left:18px;border-left:1px solid var(--line)}
.status-grid .mono{display:block;margin-bottom:8px}
.status-grid p{font-size:15px!important;line-height:1.55!important;margin:0}
@media (max-width:760px){.status-grid{grid-template-columns:1fr}.status-grid>div+div{padding-left:0;border-left:0}}
.fig-wrap{margin:clamp(28px,4vw,48px) 0 0}

.pager{display:grid;grid-template-columns:1fr 1fr;border-top:1px solid var(--ink)}
.pager a{padding:28px 0;display:flex;flex-direction:column;gap:8px;transition:color .2s}
.pager a+a{border-left:1px solid var(--line);padding-left:28px;text-align:right;align-items:flex-end}
.pager a:hover{color:var(--accent)}
.pager .t{font-family:var(--serif);font-size:clamp(20px,2vw,26px);line-height:1.2}
@media (max-width:700px){.pager{grid-template-columns:1fr}.pager a+a{border-left:0;border-top:1px solid var(--line);padding-left:0;text-align:left;align-items:flex-start}}

/* ---------- ledger ---------- */
.ledger{width:100%;border-collapse:collapse;font-size:15px}
.ledger th{font-family:var(--mono);font-size:11px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);font-weight:450;text-align:left;padding:14px 18px 14px 0;border-bottom:1px solid var(--ink);vertical-align:bottom}
.ledger td{padding:22px 18px 22px 0;border-bottom:1px solid var(--line);vertical-align:top;color:var(--ink-2);line-height:1.55}
.ledger td:first-child{font-family:var(--serif);font-size:20px;line-height:1.25;color:var(--ink);width:24%}
.ledger td:last-child{color:var(--ink)}
.ledger td:last-child::before{content:"Boundary — ";font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);display:block;margin-bottom:6px}
.ledger tr{transition:background .2s}
.ledger tbody tr:hover{background:var(--panel)}
.ledger .pill{display:inline-block;font-family:var(--mono);font-size:10.5px;letter-spacing:.04em;text-transform:uppercase;padding:2px 7px;border:1px solid var(--line-2);border-radius:2px;margin-bottom:8px;color:var(--ink-2)}
.ledger .pill.neg{border-color:var(--accent);color:var(--accent)}
@media (max-width:900px){
  .ledger thead{display:none}
  .ledger,.ledger tbody,.ledger tr,.ledger td{display:block;width:100%!important}
  .ledger tr{padding:22px 0;border-bottom:1px solid var(--line)}
  .ledger td{border:0;padding:6px 0}
  .ledger td[data-h]::before{content:attr(data-h);display:block;font-family:var(--mono);font-size:10.5px;letter-spacing:.06em;text-transform:uppercase;color:var(--muted);margin-bottom:4px}
  .ledger td:last-child::before{content:attr(data-h);color:var(--accent)}
}
.layers{display:grid;grid-template-columns:repeat(3,1fr);gap:0;border:1px solid var(--line)}
.layers>div{padding:26px;position:relative}
.layers>div+div{border-left:1px solid var(--line)}
.layers>div:last-child{background:repeating-linear-gradient(135deg,transparent 0 10px,var(--accent-soft) 10px 11px)}
.layers h3{margin:12px 0 10px}
.layers p{color:var(--ink-2);font-size:15.5px;margin:0}
@media (max-width:860px){.layers{grid-template-columns:1fr}.layers>div+div{border-left:0;border-top:1px solid var(--line)}}

/* manuscripts */
.ms{border-top:1px solid var(--ink)}
.ms-item{display:grid;grid-template-columns:120px minmax(0,1fr) 160px;gap:clamp(16px,3vw,40px);padding:32px 0;border-bottom:1px solid var(--line);position:relative}
.ms-item h3{font-size:clamp(22px,2.3vw,30px);margin:8px 0 12px}
.ms-item p{color:var(--ink-2);margin:0}
.ms-item .yr{font-family:var(--mono);font-size:13px;color:var(--muted);padding-top:6px}
.ms-item .go{font-family:var(--mono);font-size:12px;text-transform:uppercase;letter-spacing:.04em;align-self:center;justify-self:end}
.ms-item a::after{content:"";position:absolute;inset:0}
.ms-item:hover h3{color:var(--accent)}
@media (max-width:760px){.ms-item{grid-template-columns:1fr}.ms-item .go{justify-self:start}}

/* timeline */
.timeline{position:relative;display:grid;grid-template-columns:repeat(4,1fr);gap:0;margin-top:48px}
.timeline::before{content:"";position:absolute;left:0;right:0;top:5px;height:1px;background:var(--line-2)}
.timeline::after{content:"";position:absolute;left:0;top:5px;height:1px;width:0;background:var(--accent);transition:width 2.4s var(--ease)}
.in.timeline::after{width:100%}
.tl{padding:32px 24px 0 0;position:relative}
.tl::before{content:"";position:absolute;top:0;left:0;width:11px;height:11px;border-radius:50%;background:var(--bg);border:1px solid var(--line-2);transition:background .4s,border-color .4s;transition-delay:calc(var(--i)*.55s)}
.in .tl::before{background:var(--accent);border-color:var(--accent)}
.tl .mono{color:var(--accent)}
.tl h3{font-size:22px;margin:10px 0 10px}
.tl p{font-size:15px;color:var(--ink-2);margin:0}
@media (max-width:860px){.timeline{grid-template-columns:1fr;padding-left:28px}.timeline::before,.timeline::after{left:5px;right:auto;top:0;bottom:0;width:1px;height:auto}.timeline::after{height:0;width:1px;transition:height 2.4s var(--ease)}.in.timeline::after{height:100%;width:1px}.tl{padding:0 0 32px}.tl::before{left:-28px;top:6px}}

/* essay */
.essay{max-width:700px;margin:0 auto;padding:clamp(40px,7vw,96px) 0}
.essay h1{font-size:clamp(38px,5.4vw,68px);margin:18px 0 24px}
.essay .lede{max-width:none;margin-bottom:22px}
.essay h2{font-size:clamp(26px,2.8vw,34px);margin:56px 0 18px}
.essay p{font-family:var(--serif);font-size:21px;line-height:1.62;color:var(--ink-2);letter-spacing:-.003em}
.essay p.dropcap::first-letter{float:left;font-size:4.2em;line-height:.86;padding:6px 10px 0 0;color:var(--accent);font-weight:400}
.essay .byline{font-family:var(--mono);font-size:12px;color:var(--muted);letter-spacing:.04em;padding:14px 0;border-top:1px solid var(--line);border-bottom:1px solid var(--line);margin-bottom:40px;display:flex;gap:18px;flex-wrap:wrap}
.pull{font-family:var(--serif);font-style:italic;font-size:clamp(24px,2.6vw,32px);line-height:1.3;color:var(--ink);border-left:2px solid var(--accent);padding:4px 0 4px 24px;margin:40px 0}

/* footer */
.site-footer{border-top:1px solid var(--line);padding:48px 0 40px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:minmax(0,1.4fr) repeat(2,minmax(0,.6fr));gap:32px}
.footer-grid .brand-name{font-size:26px}
.footer-note{font-size:14px;color:var(--muted);max-width:52ch;margin-top:12px}
.footer-grid ul{list-style:none;margin:12px 0 0;padding:0;font-size:14.5px}
.footer-grid li{padding:4px 0}
.footer-grid li a{color:var(--ink-2)}.footer-grid li a:hover{color:var(--accent)}
.footer-base{display:flex;justify-content:space-between;gap:16px;margin-top:40px;padding-top:20px;border-top:1px solid var(--line);font-family:var(--mono);font-size:12px;color:var(--muted);flex-wrap:wrap}
@media (max-width:760px){.footer-grid{grid-template-columns:1fr 1fr}.footer-grid>div:first-child{grid-column:1/-1}}

/* reveal */
.js [data-reveal]{opacity:0;transform:translateY(16px);transition:opacity .9s var(--ease),transform .9s var(--ease);transition-delay:var(--rd,0s)}
.js [data-reveal].in{opacity:1;transform:none}
.split .w{display:inline-block;overflow:hidden;vertical-align:top;padding-bottom:.08em;margin-bottom:-.08em}
.split .w>span{display:inline-block;transform:translateY(105%);transition:transform 1s var(--ease);transition-delay:calc(var(--i)*40ms + .1s)}
.split.in .w>span{transform:none}

@media (prefers-reduced-motion:reduce){
  html{scroll-behavior:auto}
  *,*::before,*::after{animation-duration:.001ms!important;animation-delay:0s!important;animation-iteration-count:1!important;transition-duration:.001ms!important;transition-delay:0s!important}
  .dg .pulse,.figure-head .live::before{animation:none!important;opacity:0}
  .js [data-reveal]{opacity:1;transform:none}
}
@media print{.site-header,.progress,.toc{display:none}.js [data-reveal]{opacity:1;transform:none}body{background:#fff}}
.dg .grow{transform-box:fill-box;transform-origin:left center;transition:transform 1.2s var(--ease);transition-delay:var(--d,0s)}
.in .dg .grow,.in.dg .grow{transform:scaleX(var(--s,1))}
.in .dg .fadeout{animation:fadeout .6s var(--ease) forwards;animation-delay:var(--d,0s)}
@keyframes fadeout{to{opacity:0}}
.record-glyph.in .dg .draw,.record:hover .dg .draw{animation:draw 1.4s var(--ease) forwards;animation-delay:var(--d,0s)}
.record-glyph.in .dg .pop{animation:pop .6s var(--ease) forwards;animation-delay:var(--d,0s)}
.record-glyph.in .dg .fade{animation:fade .8s var(--ease) forwards;animation-delay:var(--d,0s)}
.record-glyph.in .dg .grow{transform:scaleX(var(--s,1))}