:root {
  color-scheme: light;
  --ink: #172d3a;
  --muted: #465e68;
  --paper: #f7faf9;
  --wash: #e3efed;
  --accent: #176350;
  --line: #b9ceca;
  font-family: "Trebuchet MS", "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
}

* { box-sizing: border-box; }
html { scroll-padding-top: 2rem; }
body { margin: 0; }
a { color: inherit; }
a:focus-visible { outline: 3px solid var(--accent); outline-offset: 4px; }
.skip-link {
  position: absolute;
  top: .5rem;
  left: .5rem;
  z-index: 2;
  padding: .75rem;
  background: var(--paper);
  transform: translateY(-160%);
}
.skip-link:focus { transform: none; }
.site-header { border-bottom: 1px solid var(--line); }
.header-inner, .page-shell, .footer-inner {
  width: min(100% - 3rem, 72rem);
  margin-inline: auto;
}
.header-inner {
  min-height: 5.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}
.wordmark {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -.05em;
  text-decoration: none;
}
.wordmark span { color: var(--accent); }
nav { display: flex; flex-wrap: wrap; gap: .75rem 2rem; }
nav a { font-size: .9rem; font-weight: 700; text-decoration: none; }
nav a:hover, .footer-inner a:hover { text-decoration: underline; text-underline-offset: .25em; }
.intro { padding: clamp(5rem, 10vw, 9rem) 0 clamp(5rem, 9vw, 8rem); }
.kicker, .note-category { color: var(--accent); font-size: .9rem; font-weight: 700; }
.kicker { margin: 0 0 1.5rem; }
h1, h2, p { margin-top: 0; }
h1, .note h2, .notes-heading h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 400;
  letter-spacing: -.035em;
}
h1 { max-width: 18ch; margin-bottom: 1.5rem; font-size: clamp(3rem, 6.5vw, 6rem); line-height: 1.04; }
.intro-copy { max-width: 36rem; color: var(--muted); font-size: clamp(1.1rem, 1.7vw, 1.3rem); line-height: 1.6; }
.intro-link { display: inline-block; margin-top: 1rem; color: var(--accent); font-weight: 700; text-underline-offset: .3em; }
.intro-link span { display: inline-block; margin-left: .4rem; }
.notes-heading {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.5rem 0;
  border-top: 1px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.notes-heading h2 { margin-bottom: 0; font-size: 1.6rem; }
.notes-heading p { margin-bottom: 0; color: var(--muted); font-size: .9rem; }
.note {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
  gap: clamp(2rem, 8vw, 8rem);
  padding: clamp(3rem, 6vw, 5.5rem) 0;
  border-bottom: 1px solid var(--line);
}
.note-category { margin-bottom: 1rem; }
.note h2 { max-width: 14ch; margin-bottom: 0; font-size: clamp(2rem, 3.5vw, 3.25rem); line-height: 1.12; }
.note-body { max-width: 39rem; color: var(--muted); font-size: 1.05rem; line-height: 1.75; }
.note-body p { color: var(--ink); }
.note-body ul { margin: 1.5rem 0 0; padding-left: 1.25rem; }
.note-body li { padding-left: .35rem; }
.note-body li + li { margin-top: 1rem; }
.note-body li::marker { color: var(--accent); }
.site-footer { margin-top: 5rem; background: var(--wash); }
.footer-inner { display: flex; justify-content: space-between; align-items: end; gap: 2rem; padding-block: 3rem; }
.footer-inner p { margin: 0; color: var(--muted); line-height: 1.6; }
.footer-inner strong { color: var(--ink); }
.footer-inner a { color: var(--accent); font-size: .9rem; font-weight: 700; }
@media (max-width: 640px) {
  .header-inner { align-items: flex-start; flex-direction: column; padding-block: 1.25rem; gap: 1rem; }
  nav { gap: .75rem 1.25rem; }
  .intro { padding-block: 4.5rem; }
  h1 { font-size: clamp(2.8rem, 11vw, 4rem); }
  .notes-heading { align-items: flex-start; flex-direction: column; gap: .4rem; }
  .note { grid-template-columns: 1fr; gap: 1.5rem; }
  .note h2 { max-width: 18ch; }
  .site-footer { margin-top: 3rem; }
  .footer-inner { align-items: flex-start; flex-direction: column; }
}