@font-face {
  font-family: "Space Grotesk";
  src: url("/fonts/space-grotesk.woff2") format("woff2");
  font-weight: 300 700;
  font-style: normal;
  font-display: swap;
}
:root {
  --bg: #0b0e11;
  --bg-elev: #11151a;
  --bg-card: #151a20;
  --bg-soft: #1a2027;
  --line: rgba(148,163,184,.14);
  --text: #e8eaed;
  --muted: #9aa4ad;
  --faint: #717b85;
  --accent: #a78bfa;
  --accent-2: #c4b5fd;
  --accent-3: #a78bfa;
  --warn: #fbbf24;
  --danger: #fb7185;
  --glow: rgba(167,139,250,.18);
  --radius: 18px;
  --font: "Space Grotesk",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  --mono: ui-monospace,"SF Mono",Menlo,Consolas,monospace;
  --max: 1120px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 600px at 10% -10%,rgba(167,139,250,.12),transparent 55%),radial-gradient(900px 500px at 90% 0%,rgba(196,181,253,.08),transparent 50%),radial-gradient(800px 400px at 50% 100%,rgba(167,139,250,.05),transparent 45%),var(--bg);
  line-height: 1.65;
  font-size: 17px;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
::selection { background: rgba(167,139,250,.85); color: #0b0e11; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }

/* Site bar */
.sitebar {
  position: sticky;
  top: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: .8rem max(1.25rem,calc((100vw - var(--max))/2 + 1.25rem));
  background: rgba(11,14,17,.9);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}
.sitebar a { color: var(--muted); font-size: .84rem; }
.sitebar a:hover { color: var(--text); text-decoration: none; }
.sitebar .sitebrand { color: var(--text); font-weight: 700; letter-spacing: .02em; }
.sitebar .sitebrand span { color: var(--accent); }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 1.25rem 5rem; }

/* Hero */
.hero { position: relative; padding: 4.5rem 0 3rem; border-bottom: 1px solid var(--line); overflow: hidden; }
.hero::before { content: ""; position: absolute; inset: auto -20% -40%; height: 280px; background: linear-gradient(90deg,transparent,var(--glow),transparent); filter: blur(40px); pointer-events: none; }
.kicker { display: inline-flex; align-items: center; gap: .5rem; font-size: .78rem; letter-spacing: .14em; text-transform: uppercase; color: var(--accent); font-weight: 600; margin-bottom: 1rem; }
.kicker span { width: 8px; height: 8px; border-radius: 50%; background: var(--accent); box-shadow: 0 0 12px var(--accent); }
h1 { font-size: clamp(2.3rem,5.4vw,4.1rem); line-height: 1.05; letter-spacing: -.035em; margin: 0 0 1.2rem; font-weight: 700; max-width: 22ch; }
h1 .accent { color: var(--accent); text-shadow: 0 0 26px rgba(167,139,250,.3); }
.hero-lead { font-size: 1.15rem; color: var(--muted); max-width: 64ch; margin: 0 0 1.75rem; }
.meta-row { display: flex; flex-wrap: wrap; gap: .6rem; }
.chip { font-size: .8rem; color: var(--muted); background: var(--bg-soft); border: 1px solid var(--line); border-radius: 999px; padding: .35rem .8rem; }

/* Stats */
.stats-row { display: flex; gap: .75rem; flex-wrap: wrap; margin: 2rem 0 .5rem; }
.stat {
  flex: 1;
  min-width: 150px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 1.1rem 1rem .9rem;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04);
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}
.stat:hover {
  transform: translateY(-2px);
  border-color: rgba(167,139,250,.45);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.04), 0 8px 26px -8px rgba(167,139,250,.22);
}
.stat-num {
  display: block;
  font-size: clamp(2.1rem,4.6vw,3rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -.03em;
  line-height: 1.02;
  white-space: nowrap;
}
.stat-label { display: block; margin-top: .5rem; font-size: .78rem; color: var(--muted); font-family: var(--mono); line-height: 1.45; }

/* Table of contents */
nav.toc { position: sticky; top: 45px; z-index: 40; backdrop-filter: blur(14px); background: rgba(11,14,17,.86); border-bottom: 1px solid var(--line); margin: 0 -1.25rem 2.5rem; padding: .65rem 1.25rem; }
nav.toc ul { list-style: none; margin: 0 auto; padding: 0; max-width: var(--max); display: flex; gap: .35rem; overflow-x: auto; scrollbar-width: thin; }
nav.toc a { display: block; white-space: nowrap; color: var(--muted); font-size: .84rem; padding: .45rem .75rem; border-radius: 999px; border: 1px solid transparent; }
nav.toc a:hover, nav.toc a.active { color: var(--text); background: var(--bg-soft); border-color: var(--line); text-decoration: none; }

/* Typography + sections */
section { margin: 0 0 4.5rem; scroll-margin-top: 7rem; }
.section-label { font-size: .75rem; letter-spacing: .16em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-bottom: .6rem; }
h2 { font-size: clamp(1.7rem,3vw,2.35rem); letter-spacing: -.025em; margin: 0 0 1rem; line-height: 1.2; }
h3 { font-size: 1.15rem; margin: 1.75rem 0 .65rem; color: var(--text); }
h4 { color: var(--text); }
p { color: var(--muted); margin: 0 0 1rem; }
p strong, li strong { color: var(--text); font-weight: 650; }
.prose p:last-child { margin-bottom: 0; }
.mono { font-family: var(--mono); }
.card { min-width: 0; background: linear-gradient(180deg,rgba(255,255,255,.02),transparent 40%),var(--bg-card); border: 1px solid var(--line); border-radius: var(--radius); padding: 1.35rem 1.4rem; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.card + .card { margin-top: 1rem; }
.flush { margin-top: 0; }
.grid-2 { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 1rem; }
.top-gap { margin-top: 1.25rem; }
.insight { margin-top: 1.25rem; padding: 1rem 1.15rem; border-radius: 14px; border: 1px solid rgba(167,139,250,.22); background: rgba(167,139,250,.06); color: var(--muted); }
.insight strong { color: var(--accent); }
.callout { border-radius: 14px; border: 1px solid rgba(167,139,250,.28); background: rgba(167,139,250,.07); padding: 1rem 1.15rem; margin: 1.25rem 0; }
.callout h4 { margin: 0 0 .45rem; color: var(--accent); font-size: .95rem; }
.callout p:last-child { margin-bottom: 0; }
.ol-tight { margin: .5rem 0 0; padding-left: 1.2rem; color: var(--muted); }
.ol-tight li { margin: .45rem 0; }
.note { font-size: .85rem; color: var(--faint); margin-top: .8rem; }

/* Awards */
.award-banner { margin: 1.25rem 0 1.5rem; border-radius: var(--radius); border: 1px solid rgba(167,139,250,.28); background: var(--bg-elev); overflow: hidden; box-shadow: 0 24px 60px rgba(0,0,0,.32); }
.award-banner img { display: block; width: 100%; height: auto; }
.award-banner figcaption { padding: .8rem 1.1rem; font-size: .84rem; color: var(--faint); border-top: 1px solid var(--line); background: var(--bg-card); }
.award-banner figcaption strong { color: var(--text); font-weight: 650; }
.award-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 1rem; margin-top: 1.25rem; align-items: start; }
.award { position: relative; overflow: hidden; display: flex; flex-direction: column; padding: 0; }
.award .shot { display: block; width: 100%; height: auto; border-bottom: 1px solid var(--line); }
.award-body { padding: 1.2rem 1.25rem 1.3rem; }
.award-tag { display: inline-block; font-size: .7rem; font-weight: 750; letter-spacing: .1em; text-transform: uppercase; padding: .22rem .55rem; border-radius: 6px; margin-bottom: .6rem; background: rgba(167,139,250,.13); color: var(--accent); }
.award-tag.peer { background: rgba(167,139,250,.14); color: var(--accent-3); }
.award-tag.fun { background: rgba(196,181,253,.14); color: var(--accent-2); }
.award h3 { margin: 0 0 .5rem; font-size: 1.12rem; }
.award .quote { color: var(--text); font-weight: 650; font-size: 1rem; margin: 0 0 .6rem; }
.award p { font-size: .9rem; margin: 0 0 .55rem; }
.award p:last-child { margin-bottom: 0; }
.award.tbd { border-style: dashed; border-color: rgba(167,139,250,.35); }
.tbd-flag { font-family: var(--mono); font-size: .74rem; color: var(--accent-3); margin-top: .7rem; display: block; }

/* Caterpillar centerpiece */
.loop-shell {
  position: relative;
  margin: 1.5rem 0 0;
  border-radius: var(--radius);
  border: 1px solid rgba(167,139,250,.22);
  background:
    linear-gradient(180deg,rgba(167,139,250,.06),transparent 30%),
    repeating-linear-gradient(0deg,transparent,transparent 27px,rgba(148,163,184,.045) 28px),
    repeating-linear-gradient(90deg,transparent,transparent 27px,rgba(148,163,184,.045) 28px),
    var(--bg-elev);
  padding: 1.75rem 1.5rem 1.5rem;
  overflow: hidden;
  box-shadow: 0 26px 70px rgba(0,0,0,.34);
}
.loop-head { display: flex; flex-wrap: wrap; align-items: baseline; gap: .6rem 1rem; margin-bottom: 1.4rem; }
.loop-head h3 { margin: 0; font-size: 1.05rem; letter-spacing: .01em; }
.loop-head .loop-sub { font-family: var(--mono); font-size: .78rem; color: var(--faint); }
.flow-v { position: relative; margin: 0; padding: 0; list-style: none; }
.fstep { position: relative; padding: .55rem 0 .95rem 2.6rem; }
.fstep::before { content: ""; position: absolute; left: .95rem; top: 0; bottom: 0; width: 2px; background: linear-gradient(180deg,rgba(167,139,250,.4),rgba(148,163,184,.22)); }
.fstep:first-child::before { top: 1.5rem; }
.fstep:last-child::before { bottom: calc(100% - 1.5rem); }
.fdot { position: absolute; left: .55rem; top: 1.15rem; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); border: 3px solid var(--bg-elev); box-sizing: content-box; box-shadow: 0 0 12px rgba(167,139,250,.5); }
.fnode {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem .75rem;
  background: var(--bg-card);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: .6rem .9rem;
  max-width: 100%;
}
.fnum { font-family: var(--mono); font-size: .74rem; color: var(--accent); }
.fname { font-weight: 650; color: var(--text); font-size: .98rem; }
.fmeta { font-family: var(--mono); font-size: .74rem; color: var(--faint); }
.fbody { margin: .5rem 0 0; font-size: .92rem; max-width: 68ch; }
.fbody:last-child { margin-bottom: 0; }

/* the proof point */
.fstep.proof .fdot { background: var(--accent-3); box-shadow: 0 0 0 4px rgba(167,139,250,.16), 0 0 18px rgba(167,139,250,.6); animation: proofpulse 2.6s ease-in-out infinite; }
.fstep.proof .fnode {
  border-color: rgba(167,139,250,.55);
  background: linear-gradient(135deg,rgba(167,139,250,.14),rgba(167,139,250,.05));
  box-shadow: 0 0 0 1px rgba(167,139,250,.14), 0 12px 34px -10px rgba(167,139,250,.4);
}
.fstep.proof .fnum, .fstep.proof .fmeta { color: var(--accent-3); }
.fstep.proof .fname { color: #a7f3d0; }
@keyframes proofpulse {
  0%, 100% { box-shadow: 0 0 0 4px rgba(167,139,250,.14), 0 0 14px rgba(167,139,250,.45); }
  50% { box-shadow: 0 0 0 8px rgba(167,139,250,.06), 0 0 26px rgba(167,139,250,.75); }
}
.reply-card {
  margin: .85rem 0 0;
  border-left: 3px solid var(--accent-3);
  background: rgba(167,139,250,.05);
  border-radius: 0 12px 12px 0;
  padding: .85rem 1rem;
  max-width: 68ch;
}
.reply-card .from { font-family: var(--mono); font-size: .74rem; color: var(--accent-3); letter-spacing: .04em; text-transform: uppercase; margin-bottom: .3rem; }
.reply-card p { margin: 0; font-size: .92rem; color: var(--text); }
.fstep.fix .fdot { background: var(--danger); box-shadow: 0 0 12px rgba(251,113,133,.55); }
.fstep.fix .fnode { border-color: rgba(251,113,133,.38); }
.fstep.fix .fnum { color: var(--danger); }
.bugline { font-family: var(--mono); font-size: .82rem; margin-top: .6rem; color: var(--muted); }
.bugline .bad { color: var(--danger); }
.bugline .good { color: var(--accent-3); }
.loop-close { margin-top: 1.4rem; padding-top: 1.1rem; border-top: 1px dashed var(--line); font-family: var(--mono); font-size: .82rem; color: var(--accent); }

/* 12-build index */
.build-phase { display: flex; align-items: center; gap: .75rem; margin: 1.75rem 0 .75rem; }
.build-phase h3 { margin: 0; font-size: .84rem; letter-spacing: .12em; text-transform: uppercase; color: var(--faint); white-space: nowrap; }
.build-phase .rule { flex: 1; height: 1px; background: var(--line); }
.build-list { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: .5rem; }
.build-list li {
  display: grid;
  grid-template-columns: 2.6rem 1fr;
  gap: .1rem .6rem;
  align-items: start;
  padding: .7rem .9rem;
  border-radius: 12px;
  background: var(--bg-card);
  border: 1px solid var(--line);
  transition: border-color .2s ease;
}
.build-list li:hover { border-color: rgba(167,139,250,.35); }
.build-list .bnum { font-family: var(--mono); font-size: .76rem; color: var(--accent); padding-top: .12rem; }
.build-list .bname { color: var(--text); font-weight: 650; font-size: .95rem; }
.build-list .bdesc { grid-column: 2; font-size: .86rem; color: var(--muted); }
.build-list li.anchor { border-color: rgba(167,139,250,.4); background: linear-gradient(135deg,rgba(167,139,250,.08),transparent 60%),var(--bg-card); }
.build-list li.anchor .bnum { color: var(--accent-3); }

/* Portable pieces */
.portable { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 1rem; margin-top: 1.25rem; }
.piece { position: relative; padding-left: 1.4rem; }
.piece::before { content: ""; position: absolute; left: 0; top: 1.35rem; bottom: 1.35rem; width: 3px; border-radius: 3px; background: linear-gradient(180deg,var(--accent),rgba(167,139,250,.15)); }
.piece h3 { margin: 0 0 .45rem; font-size: 1.05rem; }
.piece p { font-size: .93rem; }
.piece p:last-child { margin-bottom: 0; }
.crosslinks { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: .75rem; margin-top: 1rem; }
.crosslink {
  display: block;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--bg-card);
  color: var(--text);
  transition: border-color .2s ease, transform .2s ease;
}
.crosslink:hover { border-color: rgba(167,139,250,.45); transform: translateY(-2px); text-decoration: none; }
.crosslink .cl-kicker { font-family: var(--mono); font-size: .72rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); display: block; margin-bottom: .3rem; }
.crosslink strong { display: block; font-size: 1rem; margin-bottom: .25rem; }
.crosslink span.cl-desc { display: block; font-size: .87rem; color: var(--muted); }

/* Footer */
footer { border-top: 1px solid var(--line); padding: 2rem 0 1rem; color: var(--faint); font-size: .88rem; }
.footer-links { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: .8rem; }

/* Reveal on scroll */
.reveal { opacity: 0; transform: translateY(14px); transition: opacity .6s ease, transform .6s ease; }
.reveal.in { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .award-grid { grid-template-columns: 1fr 1fr; }
  .award.tbd { grid-column: span 2; }
}
@media (max-width: 820px) {
  .grid-2, .build-list, .portable, .crosslinks { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .sitebar { position: relative; }
  nav.toc { top: 0; }
  section { scroll-margin-top: 4rem; }
  .award-grid { grid-template-columns: 1fr; }
  .award.tbd { grid-column: auto; }
  .stat { min-width: calc(50% - .4rem); }
  .loop-shell { padding: 1.35rem 1rem 1.25rem; }
  .fstep { padding-left: 2.2rem; }
}
@media (max-width: 520px) {
  h1 { font-size: 2.2rem; }
  .stat { min-width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .stat, .crosslink { transition: none; }
  .stat:hover, .crosslink:hover { transform: none; }
  .fstep.proof .fdot { animation: none; }
}


/* Award carousel */
.award-carousel { margin: 2rem 0 2.5rem; }
.ac-track { display: flex; overflow-x: auto; scroll-snap-type: x mandatory; gap: 1rem; scrollbar-width: none; -webkit-overflow-scrolling: touch; }
.ac-track::-webkit-scrollbar { display: none; }
.ac-track:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: var(--radius); }
.ac-slide { flex: 0 0 100%; scroll-snap-align: center; margin: 0; }
.ac-slide img { width: 100%; height: auto; display: block; border-radius: var(--radius); border: 1px solid var(--line); }
.ac-slide figcaption { padding: .85rem .3rem 0; color: var(--muted); font-size: .92rem; line-height: 1.55; }
.ac-slide figcaption p { margin: .4rem 0 0; }
.ac-slide figcaption strong { color: var(--text); }
.ac-controls { display: flex; align-items: center; justify-content: center; gap: 1rem; margin-top: 1rem; }
.ac-btn { background: var(--bg-elev); border: 1px solid var(--line); color: var(--text); width: 38px; height: 38px; border-radius: 999px; font-size: 1.3rem; line-height: 1; cursor: pointer; transition: border-color .15s ease, color .15s ease; }
.ac-btn:hover { border-color: var(--accent); color: var(--accent); }
.ac-dots { display: flex; gap: .55rem; }
.ac-dot { width: 9px; height: 9px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg-soft); cursor: pointer; padding: 0; transition: background .15s ease; }
.ac-dot.active { background: var(--accent); border-color: var(--accent); }