:root {
  --bg: #ffffff;
  --fg: #16181d;
  --muted: #5c6270;
  --accent: #3b5bdb;
  --border: #e6e8ec;
  --maxw: 44rem;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --serif: Georgia, "Times New Roman", serif;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --fg: #e8eaed;
    --muted: #9aa1ad;
    --accent: #7f9cf5;
    --border: #262a31;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  font-family: var(--font);
  font-size: 18px;
  line-height: 1.65;
  color: var(--fg);
  background: var(--bg);
}

main {
  display: block;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2.5rem 1.25rem 4rem;
}

a { color: var(--accent); }

/* Header / footer */
.site-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 1.25rem;
  border-bottom: 1px solid var(--border);
}
.site-header .brand {
  font-weight: 700;
  letter-spacing: -0.01em;
  text-decoration: none;
  color: var(--fg);
}
.site-header nav a { text-decoration: none; }
.site-footer {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: 2rem 1.25rem;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.9rem;
}

/* Landing */
.hero h1 {
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin: 0 0 1rem;
}
.hero .tagline {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.5rem;
  line-height: 1.3;
  color: var(--accent);
  margin: 0 0 1.25rem;
  max-width: 32rem;
}
.hero .lede {
  font-size: 1.2rem;
  color: var(--muted);
  max-width: 36rem;
}
.cta {
  display: inline-block;
  margin-top: 0.5rem;
  font-weight: 600;
  text-decoration: none;
}
.pitch { margin-top: 3rem; }
.pitch h2 { letter-spacing: -0.01em; }

/* Blog index */
.blog-index h1 { letter-spacing: -0.02em; }
.post-list { list-style: none; padding: 0; margin: 2rem 0 0; }
.post-list li {
  padding: 1.25rem 0;
  border-top: 1px solid var(--border);
}
.post-list .post-link {
  font-size: 1.25rem;
  font-weight: 600;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.post-list time { display: block; color: var(--muted); font-size: 0.9rem; margin-top: 0.15rem; }
.post-list p { margin: 0.4rem 0 0; color: var(--muted); }
.empty { color: var(--muted); }

/* Post */
.post h1 {
  font-size: clamp(1.9rem, 5vw, 2.6rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 0.5rem;
}
.post-meta { color: var(--muted); margin: 0 0 2rem; }
.post h2 { margin-top: 2.5rem; letter-spacing: -0.01em; }
.post p, .post li { font-family: var(--serif); }
.post img { max-width: 100%; height: auto; }
.post pre {
  overflow-x: auto;
  padding: 1rem;
  background: var(--border);
  border-radius: 6px;
}

/* Share of Model dashboard */
.som h1 { letter-spacing: -0.02em; }
.som .lede { color: var(--muted); max-width: 36rem; }
.som-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 2rem;
  font-size: 0.95rem;
}
.som-table th, .som-table td {
  text-align: left;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid var(--border);
}
.som-table th { color: var(--muted); font-weight: 600; }
.som-table td.som-missing { color: var(--muted); font-size: 0.8rem; font-style: italic; opacity: 0.6; }