:root {
  --bg: #0E0D0C;
  --bg-2: #16140F;
  --panel: #1A1713;
  --ink: #EDE7D9;
  --ink-2: #CFC8B8;
  --ink-3: #8A8375;
  --rule: #2A261E;
  --rule-2: #3A3528;

  --accent: #D7FF14;
  --accent-2: #BCE000;
  --accent-ink: #000;

  --display: 'Archivo', 'Inter', -apple-system, system-ui, sans-serif;
  --sans:    'Inter', -apple-system, system-ui, sans-serif;
  --mono:    'JetBrains Mono', ui-monospace, Menlo, monospace;
}

body[data-theme="light"] {
  --bg: #F6F2EA; --bg-2: #EDE7D9; --panel: #FFFFFF;
  --ink: #1B1A17; --ink-2: #3A3630; --ink-3: #857E6E;
  --rule: #D7CFBD; --rule-2: #BFB59E;
  --accent: #7C3AED; --accent-2: #5B21B6; --accent-ink: #FFF;
}

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  background: var(--bg); color: var(--ink);
  font-family: var(--sans);
  font-feature-settings: 'kern','cv11';
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; }
img { display: block; max-width: 100%; }
.mono { font-family: var(--mono); font-feature-settings: 'tnum','zero'; }
.muted { color: var(--ink-3); }

/* nav */
.nav {
  position: sticky; top: 0; z-index: 10;
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center;
  padding: 18px 40px;
  background: color-mix(in oklab, var(--bg) 85%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.14em;
}
.nav-mark { display: flex; align-items: center; gap: 10px; color: var(--ink-2); }
.nav-mark em { font-style: normal; color: var(--accent); }
.nav-links { display: flex; gap: 28px; justify-content: center; }
.nav-links a { color: var(--ink-2); text-decoration: none; transition: color 160ms; }
.nav-links a:hover { color: var(--accent); }
.nav-right { display: flex; gap: 12px; justify-content: flex-end; align-items: center; color: var(--ink-3); }
.nav-right .small { font-size: 10.5px; letter-spacing: 0.14em; }
.theme {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink); padding: 8px 10px;
  background: color-mix(in oklab, var(--bg) 70%, transparent);
  backdrop-filter: blur(8px);
  border: 1px solid var(--rule-2);
  cursor: pointer; transition: all 140ms;
}
.theme:hover { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }

/* hero */
.hero { padding: 110px 40px 90px; max-width: 1240px; margin: 0 auto; }
.hero-meta {
  display: flex; gap: 18px; align-items: baseline;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3);
  margin-bottom: 36px;
}
.hero-meta .dot { width: 8px; height: 8px; background: var(--accent); display: inline-block; }
.hero-meta .sep { opacity: 0.4; }
.hero h1 {
  font-family: var(--display);
  font-weight: 800; font-stretch: 110%;
  font-size: clamp(56px, 9vw, 128px);
  line-height: 0.92; letter-spacing: -0.035em;
  margin: 0; text-wrap: balance;
  max-width: 14ch; color: var(--ink);
}
.hero h1 .hl { background: var(--accent); color: var(--accent-ink); padding: 0 0.1em; font-style: normal; }
.hero h1 em { font-style: italic; color: var(--ink-2); font-weight: 700; }

.hero-body {
  display: grid; grid-template-columns: 220px 1.1fr 1fr; gap: 48px;
  margin-top: 52px; align-items: start;
}
.hero-portrait {
  margin: 0;
}
.hero-portrait img {
  display: block; width: 100%; height: auto;
  filter: grayscale(100%);
}
.hero-portrait figcaption {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-3);
  margin-top: 12px;
  line-height: 1.4;
}
.hero-lede {
  font-size: 19px; line-height: 1.55; color: var(--ink-2);
  max-width: 56ch; font-weight: 400; text-wrap: pretty;
}
.hero-lede a { color: var(--ink); text-decoration: underline; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.hero-lede a:hover { color: var(--accent); }
.hero-lede p { margin: 0 0 14px; }
.hero-lede strong { color: var(--ink); font-weight: 600; }

.hero-side { padding-top: 0; }
.hero-side .label {
  font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px;
}
.hero-side ul { list-style: none; padding: 0; margin: 0; }
.hero-side li {
  font-family: var(--display); font-weight: 500;
  font-size: 17px; color: var(--ink); padding: 7px 0;
  letter-spacing: -0.01em;
}
.hero-side li + li { border-top: 1px dashed var(--rule); }
.hero-side li::before { content: '→ '; color: var(--accent); font-weight: 700; }

.hero-links {
  display: flex; gap: 18px; margin-top: 20px; flex-wrap: wrap;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
}
.hero-links a {
  color: var(--ink-2); text-decoration: none;
  border-bottom: 1px solid var(--rule-2); padding-bottom: 2px;
  transition: color 160ms, border-color 160ms;
}
.hero-links a:hover { color: var(--accent); border-color: var(--accent); }

/* section */
.section {
  max-width: 1240px; margin: 0 auto;
  padding: 80px 40px;
  border-top: 1px solid var(--rule);
}
.section-head {
  display: grid; grid-template-columns: 220px 1fr; gap: 32px;
  align-items: baseline; margin-bottom: 56px;
}
.section-label {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--ink-3);
}
.section-label span { color: var(--accent); }
.section-head h2 {
  font-family: var(--display);
  font-size: clamp(30px, 3.6vw, 52px); font-weight: 700; font-stretch: 110%;
  line-height: 1.05; letter-spacing: -0.02em; margin: 0; text-wrap: balance;
  color: var(--ink);
}
.section-head h2 em { font-style: italic; color: var(--ink-2); font-weight: 600; }
.section-head h2 .hl { background: var(--accent); color: var(--accent-ink); padding: 0 0.1em; font-style: normal; }

/* featured */
.featured {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px;
  align-items: start;
}
.featured-fig {
  margin: 0; position: relative;
  border: 1px solid var(--rule); background: var(--bg-2);
  aspect-ratio: 4 / 3; overflow: hidden;
}
.featured-fig img { width: 100%; height: 100%; object-fit: cover; }
.featured-fig .tag {
  position: absolute; top: 12px; left: 12px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; background: var(--accent); color: var(--accent-ink);
  padding: 5px 8px; font-weight: 600;
}
.featured-fig .caption {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 10px 12px;
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.04em;
  color: var(--ink-2); background: color-mix(in oklab, var(--bg) 80%, transparent);
  backdrop-filter: blur(8px);
  border-top: 1px solid var(--rule);
  display: flex; justify-content: space-between; gap: 16px;
}
.featured-meta {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 14px;
  display: flex; gap: 10px;
}
.featured-meta .venue { color: var(--accent); }
.featured h3 {
  font-family: var(--display); font-weight: 700; font-stretch: 110%;
  font-size: clamp(22px, 2.5vw, 32px); line-height: 1.15;
  letter-spacing: -0.015em; margin: 0 0 16px; color: var(--ink); text-wrap: balance;
}
.featured p { font-size: 16px; line-height: 1.6; color: var(--ink-2); margin: 0 0 16px; max-width: 56ch; }
.featured .authors { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); margin-bottom: 14px; }
.featured .award {
  font-family: var(--mono); font-size: 12px; letter-spacing: 0.04em;
  color: var(--ink-2); padding: 10px 12px; border-left: 2px solid var(--accent);
  background: color-mix(in oklab, var(--bg-2) 60%, transparent);
  margin-bottom: 18px;
}
.featured .award strong { color: var(--accent); margin-right: 8px; }
.featured .read {
  display: inline-block; margin-top: 4px;
  padding: 8px 12px; background: var(--accent); color: var(--accent-ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.14em; text-transform: uppercase;
  font-weight: 600; text-decoration: none;
  transition: transform 140ms;
}
.featured .read:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }

/* timeline */
.timeline { display: grid; gap: 2px; max-width: 900px; }
.tl-row {
  display: grid; grid-template-columns: 160px 1fr; gap: 32px;
  padding: 18px 0; border-top: 1px solid var(--rule);
  align-items: start;
}
.tl-row:first-child { border-top: 2px solid var(--ink); }
.tl-year { font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; color: var(--ink-3); padding-top: 4px; }
.tl-row.current .tl-year { color: var(--accent); font-weight: 600; }
.tl-body { position: relative; }
.tl-body::before {
  content: ''; position: absolute; left: -18px; top: 10px;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--ink-3); border: 2px solid var(--bg);
}
.tl-row.current .tl-body::before {
  background: var(--accent); box-shadow: 0 0 0 4px color-mix(in oklab, var(--accent) 25%, transparent);
}
.tl-head { display: flex; gap: 12px; align-items: center; margin-bottom: 4px; flex-wrap: wrap; }
.tl-role { font-family: var(--display); font-weight: 600; font-size: 20px; color: var(--ink); letter-spacing: -0.015em; }
.tl-kind {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3); padding: 3px 7px;
  border: 1px solid var(--rule-2);
}
.tl-row.current .tl-kind { color: var(--accent-ink); background: var(--accent); border-color: var(--accent); font-weight: 600; }
.tl-org { font-size: 15px; color: var(--ink-2); font-family: var(--mono); }
.tl-recognition {
  margin-top: 8px; font-family: var(--mono); font-size: 11.5px;
  color: var(--ink-2); padding: 6px 10px; border-left: 2px solid var(--accent);
  background: color-mix(in oklab, var(--bg-2) 50%, transparent);
}
.tl-recognition strong { color: var(--accent); margin-right: 8px; }

/* research */
.research-row {
  display: grid; grid-template-columns: 1.1fr 1fr; gap: 60px;
  align-items: start; margin-bottom: 60px;
}
.research-row.reverse { grid-template-columns: 1fr 1.1fr; }
.research-row.reverse .research-figure { order: 2; }
.research-figure {
  margin: 0; position: relative;
  border: 1px solid var(--rule); background: var(--bg-2);
  aspect-ratio: 4 / 3; overflow: hidden;
}
.research-figure img { width: 100%; height: 100%; object-fit: cover; }
.research-figure img.contain { object-fit: contain; padding: 24px; background: var(--bg-2); }
.research-figure .fignum {
  position: absolute; top: 10px; left: 10px;
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.12em;
  color: var(--accent-ink); background: var(--accent); font-weight: 600;
  padding: 4px 8px; text-transform: uppercase;
}
.research-body .num {
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.18em;
  color: var(--accent); text-transform: uppercase; margin-bottom: 10px;
}
.research-body h3 {
  font-family: var(--display); font-weight: 700; font-stretch: 110%;
  font-size: clamp(22px, 2.4vw, 32px); line-height: 1.15;
  letter-spacing: -0.015em; margin: 0 0 12px; color: var(--ink); text-wrap: balance;
}
.research-body p { font-size: 16px; line-height: 1.6; color: var(--ink-2); margin: 0 0 16px; max-width: 56ch; }
.research-links { display: flex; gap: 14px; flex-wrap: wrap; }
.research-links a {
  padding: 6px 10px; background: var(--accent); color: var(--accent-ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase;
  text-decoration: none; font-weight: 600; transition: transform 140ms;
}
.research-links a:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.research-links a[href="#"] { opacity: 0.4; pointer-events: none; }

/* changelog */
.changelog { display: flex; flex-direction: column; }
.entry {
  display: grid; grid-template-columns: 110px 120px 1fr 40px; gap: 24px;
  padding: 18px 0; border-top: 1px solid var(--rule);
  cursor: pointer; align-items: center;
  transition: background 160ms, padding-left 160ms;
}
.entry:hover { background: color-mix(in oklab, var(--bg-2) 60%, transparent); padding-left: 18px; }
.entry-date { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }
.entry-tag {
  font-family: var(--mono); font-size: 10px; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--accent-ink); background: var(--accent); padding: 3px 7px; font-weight: 600; width: fit-content;
}
.entry-head {
  font-family: var(--display); font-size: 21px; font-weight: 700; font-stretch: 110%;
  color: var(--ink); line-height: 1.15; letter-spacing: -0.015em; text-wrap: balance;
}
.entry-toggle { font-family: var(--mono); font-size: 14px; color: var(--ink-3); text-align: right; transition: transform 200ms, color 200ms; }
.entry[data-open="true"] .entry-toggle { transform: rotate(45deg); color: var(--accent); }
.entry-body {
  grid-column: 2 / 5;
  display: grid; grid-template-rows: 0fr;
  transition: grid-template-rows 360ms cubic-bezier(.2,.7,.2,1);
}
.entry[data-open="true"] .entry-body { grid-template-rows: 1fr; }
.entry-body > div { overflow: hidden; padding-top: 10px; }
.entry-body p { font-size: 16px; color: var(--ink-2); line-height: 1.6; max-width: 66ch; margin: 0 0 10px; }
.entry-body .ref { font-family: var(--mono); font-size: 11.5px; color: var(--ink-3); }
.entry-body a {
  padding: 6px 10px; background: var(--accent); color: var(--accent-ink);
  font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; text-decoration: none; font-weight: 600;
  display: inline-block; margin-top: 10px;
  transition: transform 140ms;
}
.entry-body a:hover { transform: translate(-2px, -2px); box-shadow: 4px 4px 0 var(--ink); }
.entry-media {
  margin: 12px 0 14px; border: 1px solid var(--rule); background: var(--bg-2);
  max-width: 520px; overflow: hidden;
}
.entry-media img { display: block; width: 100%; height: auto; }

/* footer */
.footer {
  max-width: 1240px; margin: 0 auto;
  padding: 100px 40px 60px;
  border-top: 1px solid var(--rule);
  display: grid; grid-template-columns: 1fr auto; gap: 32px; align-items: end;
}
.footer h3 {
  font-family: var(--display); font-weight: 800; font-stretch: 115%;
  font-size: clamp(42px, 6vw, 80px); line-height: 0.92;
  letter-spacing: -0.03em; margin: 0; color: var(--ink);
}
.footer h3 a { color: var(--accent-ink); background: var(--accent); padding: 0 0.12em; text-decoration: none; }
.footer .meta { font-family: var(--mono); font-size: 11px; letter-spacing: 0.12em; text-transform: uppercase; color: var(--ink-3); text-align: right; line-height: 1.8; }
.footer .meta a { color: var(--ink-2); text-decoration: none; }
.footer .meta a:hover { color: var(--accent); }

/* reveals */
@keyframes fadeUp { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: none; } }
.reveal { animation: fadeUp 700ms cubic-bezier(.2,.7,.2,1) both; }
.reveal[data-i="1"] { animation-delay: 80ms; }
.reveal[data-i="2"] { animation-delay: 160ms; }

/* responsive */
@media (max-width: 900px) {
  .nav { grid-template-columns: auto 1fr; padding: 14px 20px; }
  .nav-links { display: none; }
  .hero { padding: 60px 20px 40px; }
  .hero-body { grid-template-columns: 1fr; gap: 32px; }
  .hero-portrait { max-width: 260px; }
  .section { padding: 50px 20px; }
  .section-head { grid-template-columns: 1fr; gap: 12px; margin-bottom: 36px; }
  .featured, .research-row, .research-row.reverse { grid-template-columns: 1fr; gap: 24px; }
  .research-row.reverse .research-figure { order: 0; }
  .tl-row { grid-template-columns: 1fr; gap: 6px; }
  .tl-body::before { display: none; }
  .entry { grid-template-columns: 90px 1fr 30px; gap: 16px; }
  .entry-tag { display: none; }
  .entry-body { grid-column: 2 / 4; }
  .footer { grid-template-columns: 1fr; padding: 60px 20px 40px; }
  .footer .meta { text-align: left; }
}