:root {
  --bg: #f8f7f4;
  --surface: #f5f4ef;
  --ink: #28251f;
  --muted: #6f6a60;
  --link: #b3552d;
  --rule: #e5e2d8;
  --measure: 46rem;
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: Charter, Georgia, Cambria, "Times New Roman", serif;
  font-size: 18px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 4.5rem 1.5rem 6rem;
}

a { color: var(--link); text-decoration: none; }
a:hover { text-decoration: underline; }
p { margin: 0 0 1rem; }

/* Header */
header {
  margin-bottom: 2.8rem;
  padding-bottom: 1.6rem;
  border-bottom: 1px solid var(--rule);
}
.eyebrow {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--muted);
  margin: 0 0 0.7rem;
}
h1 {
  font-size: 1.95rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.25;
  margin: 0 0 1rem;
}
.authors { margin: 0 0 0.25rem; }
.me {
  font-weight: 600;
  text-decoration: underline;
  text-decoration-thickness: 0.06em;
  text-underline-offset: 0.14em;
}
.affil { color: var(--muted); font-size: 0.95rem; margin: 0 0 1.1rem; }

.links { display: flex; flex-wrap: wrap; align-items: center; gap: 0.3rem 0.45rem; }
.links a { font-size: 0.98rem; }
.links .sep { color: var(--muted); font-size: 0.9rem; }

/* Sections */
section { margin-bottom: 2.6rem; }
h2 {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--muted);
  margin: 0 0 1.1rem;
  padding-bottom: 0.4rem;
  border-bottom: 1px solid var(--rule);
}

/* Callout / TL;DR */
.callout {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-left: 3px solid var(--link);
  border-radius: 4px;
  padding: 1rem 1.2rem;
  font-size: 0.98rem;
}
.callout strong { color: var(--ink); }

/* Bullet points */
ul.points { margin: 0; padding-left: 1.2rem; }
ul.points li { margin-bottom: 0.6rem; }
ul.points li:last-child { margin-bottom: 0; }

/* Math blocks scroll on small screens */
mjx-container { overflow-x: auto; overflow-y: hidden; max-width: 100%; }

.note { font-size: 0.9rem; color: var(--muted); font-style: italic; }

/* BibTeX */
pre.bibtex {
  background: var(--surface);
  border: 1px solid var(--rule);
  border-radius: 4px;
  padding: 1rem 1.1rem;
  overflow-x: auto;
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.5;
  color: var(--ink);
}
code {
  font-family: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
  font-size: 0.88em;
}

/* Footer */
footer {
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: 0.85rem;
}
footer p { margin: 0; }

@media (max-width: 540px) {
  body { font-size: 17px; }
  main { padding: 3rem 1.2rem 4rem; }
  h1 { font-size: 1.6rem; }
}