*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  color-scheme: light;
  --paper: #f9f9f7;
  --surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #898781;
  --line: #e1e0d9;
  --rule: #c3c2b7;
  --accent: #c2540e;
  --accent-ink: #fff8f2;
  --blue: #2a78d6;
  --good: #006300;
  --border: rgba(11, 11, 11, 0.10);

  --font-serif: "Source Serif 4", Georgia, "Times New Roman", serif;
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-mono: "JetBrains Mono", "SF Mono", Consolas, monospace;

  --content: 700px;
  --wide: 1120px;
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --paper: #0d0d0d;
    --surface: #161615;
    --ink: #f5f4f1;
    --ink-2: #c3c2b7;
    --muted: #8f8d87;
    --line: #2c2c2a;
    --rule: #383835;
    --accent: #e07136;
    --accent-ink: #1a0f08;
    --blue: #3987e5;
    --good: #0ca30c;
    --border: rgba(255, 255, 255, 0.10);
  }
}

html { -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-sans);
  background: var(--paper);
  color: var(--ink);
  line-height: 1.6;
  font-size: 16px;
}

a { color: inherit; text-decoration-color: var(--rule); text-underline-offset: 2px; }
a.link, .prose a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--rule); }
a.link:hover, .prose a:hover { text-decoration-color: var(--accent); }

.container { max-width: var(--wide); margin: 0 auto; padding: 0 1.5rem; }
.prose { max-width: var(--content); }

img { max-width: 100%; display: block; }

/* Type */

h1, h2, h3, h4 {
  font-family: var(--font-serif);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}
h1 { font-size: clamp(2.1rem, 4vw, 3.1rem); }
h2 { font-size: clamp(1.5rem, 2.6vw, 2rem); }
h3 { font-size: 1.25rem; }
p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

.lede {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--ink-2);
  max-width: 46ch;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 0.75rem;
}

.figure-caption, figcaption {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--muted);
  letter-spacing: 0.01em;
}

.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
}

.arrow-link {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 2px;
  white-space: nowrap;
}
.arrow-link:hover { border-color: var(--accent); color: var(--accent); }

/* Header */

header.site-header {
  border-bottom: 1px solid var(--line);
  border-top: 3px solid var(--accent);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 100;
}
.nav-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  padding: 1.1rem 0;
}
.brand { display: flex; align-items: baseline; gap: 0.6rem; }
.brand .wordmark {
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--ink);
  letter-spacing: -0.01em;
}
.brand .tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.nav-links { list-style: none; display: flex; gap: 1.75rem; align-items: center; }
.nav-links a {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-2);
}
.nav-links a:hover { color: var(--accent); }
.nav-links .active { color: var(--ink); border-bottom: 1px solid var(--accent); padding-bottom: 3px; }

/* Main */

main { padding: 0 0 5rem; }

.section { padding: 4rem 0; }
.section + .section { border-top: 1px solid var(--line); }
.section-tight { padding: 3rem 0; }

.section-head { max-width: 640px; margin-bottom: 2.5rem; }
.section-head h2 { margin-bottom: 0.9rem; }
.section-head p { color: var(--ink-2); }

/* Hero */

.hero { padding: 3.5rem 0 3rem; }
.hero-grid { display: grid; grid-template-columns: 1.15fr 1fr; gap: 3rem; align-items: center; margin-bottom: 2.75rem; }
.hero h1 { margin-bottom: 1.1rem; max-width: 16ch; }
.hero .lede { margin-bottom: 2rem; max-width: none; }
.hero-links { display: flex; flex-wrap: wrap; gap: 0.5rem 1.75rem; }
.hero-visual { border: 1px solid var(--line); border-radius: 4px; overflow: hidden; line-height: 0; }
.hero-visual img { width: 100%; height: auto; display: block; }

.stat-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 1.75rem;
}
.stat-row .stat-value {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-variant-numeric: tabular-nums;
  color: var(--ink);
  display: block;
}
.stat-row .stat-label {
  font-size: 0.85rem;
  color: var(--muted);
  display: block;
  margin-top: 0.15rem;
}

/* Benchmark figure */

.benchmark {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 4px;
  padding: 1.75rem 1.75rem 1.5rem;
  margin: 1.75rem 0;
}
.benchmark-row { margin-bottom: 1.35rem; }
.benchmark-row:last-of-type { margin-bottom: 1rem; }
.benchmark-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}
.benchmark-label span { color: var(--muted); font-family: var(--font-mono); font-size: 0.78rem; }
.benchmark-track {
  height: 22px;
  background: var(--paper);
  border: 1px solid var(--line);
  border-radius: 3px;
  overflow: hidden;
  position: relative;
  display: flex;
  align-items: center;
}
.benchmark-fill {
  height: 100%;
  border-radius: 2px 3px 3px 2px;
}
.fill-muted { background: var(--rule); }
.fill-accent { background: var(--accent); }
.benchmark-value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  color: var(--ink-2);
  margin-top: 0.35rem;
}
.benchmark-value small { color: var(--muted); }
.benchmark-note {
  font-size: 0.9rem;
  color: var(--ink-2);
  border-top: 1px solid var(--line);
  padding-top: 1rem;
  margin-top: 0.25rem;
}

/* Cards / project grid */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}
.card {
  background: var(--paper);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
}
.card .index {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 1rem;
}
.card h3 { margin-bottom: 0.6rem; }
.card p { color: var(--ink-2); font-size: 0.95rem; flex-grow: 1; }
.card .arrow-link { margin-top: 1.25rem; align-self: flex-start; }

/* Feature/spec lists */

.spec-list { list-style: none; margin: 1.25rem 0; }
.spec-list li {
  display: grid;
  grid-template-columns: 1.4rem 1fr;
  gap: 0.75rem;
  padding: 0.6rem 0;
  border-top: 1px solid var(--line);
  font-size: 0.95rem;
  color: var(--ink-2);
}
.spec-list li:last-child { border-bottom: 1px solid var(--line); }
.spec-list li span:first-child {
  font-family: var(--font-mono);
  color: var(--accent);
}
.spec-list strong { color: var(--ink); font-weight: 600; }

/* Sidebar + index layout, shared by research and models */

.research-layout, .models-layout {
  display: grid;
  grid-template-columns: 220px 1fr;
  gap: 3rem;
  align-items: start;
  padding: 1rem 0 3rem;
}
.research-nav, .models-nav {
  position: sticky;
  top: 5.5rem;
}
.research-nav .eyebrow, .models-nav .eyebrow { margin-bottom: 1rem; }
.research-nav ul, .models-nav ul { list-style: none; }
.research-nav li, .models-nav li { border-top: 1px solid var(--line); }
.research-nav a, .models-nav a {
  display: block;
  padding: 0.75rem 0;
  font-size: 0.88rem;
  color: var(--ink-2);
  line-height: 1.35;
}
.research-nav a:hover, .models-nav a:hover { color: var(--ink); }
.research-nav a.active, .models-nav a.active { color: var(--accent); }
.research-nav-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.research-index-list, .models-index-list { max-width: var(--content); }
.research-index-item, .models-index-item { border-top: 1px solid var(--line); padding: 1.75rem 0; }
.research-index-item:last-child, .models-index-item:last-child { border-bottom: 1px solid var(--line); }
.research-index-item h3, .models-index-item h3 { margin: 0.35rem 0 0.5rem; }
.research-index-item a, .models-index-item a { text-decoration: none; }
.research-index-item a:hover, .models-index-item a:hover { color: var(--accent); }
.research-index-item p, .models-index-item p { color: var(--ink-2); font-size: 0.95rem; }
.research-index-item .date {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

@media (max-width: 820px) {
  .research-layout, .models-layout { grid-template-columns: 1fr; }
  .research-nav, .models-nav { position: static; border-bottom: 1px solid var(--line); padding-bottom: 1.5rem; margin-bottom: 1rem; }
}

/* Compare page */

.compare-meta {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--muted);
  margin-top: -0.4rem;
  margin-bottom: 1rem;
}
.compare-figure { margin: 1.5rem 0; }
.compare-frame {
  border: 1px solid var(--line);
  border-radius: 4px;
  overflow: hidden;
  background: #0d0d14;
}
.compare-frame img { width: 100%; height: auto; display: block; }
.compare-figure figcaption { margin-top: 0.6rem; }
.compare-figure figcaption a { color: var(--muted); text-decoration: underline; text-decoration-color: var(--rule); }
.compare-figure figcaption a:hover { color: var(--accent); }

/* Numbered sections (research page) */

.numbered { display: grid; grid-template-columns: 3.5rem 1fr; gap: 1.5rem; margin-bottom: 3rem; }
.numbered .n { font-family: var(--font-mono); color: var(--muted); font-size: 0.85rem; padding-top: 0.35rem; }
.numbered h2 { margin-bottom: 0.9rem; }

/* Table */

table { width: 100%; border-collapse: collapse; margin: 1.5rem 0; font-size: 0.88rem; }
th, td { text-align: left; padding: 0.7rem 0.9rem; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-family: var(--font-mono); font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--muted); font-weight: 500; }
td.num, td .num { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
tr:last-child td { border-bottom: 1px solid var(--rule); }

/* Code */

.code-block { background: var(--surface); border: 1px solid var(--line); border-radius: 4px; padding: 1.25rem 1.5rem; overflow-x: auto; margin: 1.5rem 0; font-size: 0.85rem; }
.code-block code { color: var(--ink); font-family: var(--font-mono); }
pre { margin: 0; }
code { font-family: var(--font-mono); }

/* Callout / experiment feature */

.callout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}
.callout-body p { color: var(--ink-2); }
.callout-console {
  background: var(--ink);
  color: var(--paper);
  border-radius: 4px;
  padding: 1.25rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  line-height: 1.7;
}
.callout-console .muted { opacity: 0.5; }
.callout-console .accent { color: var(--accent); }

/* Blog list */

.page-header { margin-bottom: 3rem; padding-top: 3rem; }
.page-header .lede { margin-top: 0.5rem; }

.blog-list { list-style: none; max-width: var(--content); }
.blog-list li { border-top: 1px solid var(--line); padding: 1.75rem 0; }
.blog-list li:last-child { border-bottom: 1px solid var(--line); }
.blog-list h2 { font-size: 1.3rem; margin-bottom: 0.4rem; }
.blog-list a { text-decoration: none; }
.blog-list a:hover { color: var(--accent); }
.blog-list p { color: var(--ink-2); font-size: 0.95rem; margin: 0; }
.blog-list .date {
  font-family: var(--font-mono);
  color: var(--muted);
  font-size: 0.78rem;
  margin-bottom: 0.6rem;
  display: block;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.blog-teaser-head { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 1.5rem; }

.post-header { max-width: var(--content); margin-bottom: 2.5rem; padding-top: 3rem; }
.post-header h1 { margin-bottom: 0.75rem; }
.post-date { font-family: var(--font-mono); color: var(--muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; }
.research-byline {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent);
  border-left: 2px solid var(--accent);
  padding-left: 0.9rem;
  margin-top: 1.25rem;
  max-width: 46ch;
}
.post-content { max-width: var(--content); }
.post-content h2 { margin-top: 2.25rem; margin-bottom: 0.9rem; }
.post-content h3 { margin-top: 1.75rem; margin-bottom: 0.6rem; }
.post-content ul, .post-content ol { margin: 0 0 1rem 1.5rem; color: var(--ink-2); }
.post-content li { margin-bottom: 0.5rem; }
.post-content p { color: var(--ink-2); }
.post-content a { color: var(--ink); text-decoration: underline; text-decoration-color: var(--rule); }
.post-content pre { background: var(--surface); border: 1px solid var(--line); padding: 1.1rem 1.4rem; border-radius: 4px; overflow-x: auto; margin: 1.25rem 0; }
.post-content code { font-size: 0.85rem; }
.post-content pre code { color: var(--ink); }

/* Footer */

footer.site-footer { border-top: 1px solid var(--line); padding: 3rem 0 2.5rem; margin-top: 2rem; }
.footer-content { display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 2rem; margin-bottom: 2rem; }
.footer-brand .wordmark { font-family: var(--font-serif); font-weight: 700; }
.footer-brand p { color: var(--muted); margin-top: 0.4rem; font-size: 0.9rem; max-width: 32ch; }
.footer-links { display: flex; gap: 1.5rem 2rem; flex-wrap: wrap; }
.footer-links a { font-family: var(--font-mono); color: var(--ink-2); font-size: 0.82rem; }
.footer-links a:hover { color: var(--accent); }
.footer-meta { display: flex; justify-content: space-between; align-items: baseline; flex-wrap: wrap; gap: 0.5rem 1.5rem; border-top: 1px solid var(--line); padding-top: 1.5rem; }
.copyright, .footer-contact, .footer-social { color: var(--muted); font-size: 0.82rem; font-family: var(--font-mono); }
.footer-social { display: flex; gap: 1.25rem; }
.footer-contact a, .footer-social a { color: var(--muted); }
.footer-contact a:hover, .footer-social a:hover { color: var(--accent); }

@media (max-width: 760px) {
  .hero-grid { grid-template-columns: 1fr; }
  .hero-visual { order: -1; }
  .callout { grid-template-columns: 1fr; }
  .numbered { grid-template-columns: 1fr; }
  .numbered .n { padding-top: 0; }
  .nav-links { gap: 1rem; }
  .footer-content { flex-direction: column; }
}