:root {
  --paper: #f6f7f9;
  --paper-raised: #ffffff;
  --ink: #1c2738;
  --muted: #69778b;
  --line: #dfe4eb;
  --accent: #426f9d;
  --accent-soft: #e8f0f8;
  --header: rgba(246, 247, 249, 0.9);
  --sans: Inter, ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
}

html[data-theme="dark"] {
  --paper: #0e1624;
  --paper-raised: #152033;
  --ink: #e8eef7;
  --muted: #9aa9bd;
  --line: #28374d;
  --accent: #83acd6;
  --accent-soft: #1d3048;
  --header: rgba(14, 22, 36, 0.9);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; }

a:focus-visible,
button:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  left: 1rem;
  top: -5rem;
  z-index: 100;
  padding: .65rem 1rem;
  background: var(--ink);
  color: var(--paper);
  text-decoration: none;
}

.skip-link:focus { top: 1rem; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  border-bottom: 1px solid var(--line);
  background: var(--header);
  backdrop-filter: blur(14px);
}

.header-inner,
.footer-inner,
.section-inner,
.page-shell {
  width: min(960px, calc(100% - 48px));
  margin-inline: auto;
}

.header-inner {
  min-height: 68px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  text-decoration: none;
  font-family: var(--serif);
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -.02em;
}

.brand-mark {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: .78em;
  font-weight: 600;
  letter-spacing: .03em;
}

.header-actions,
.site-nav { display: flex; align-items: center; }
.header-actions { gap: 1.2rem; }
.site-nav { gap: 1.5rem; }

.site-nav a {
  color: var(--muted);
  text-decoration: none;
  font-size: .88rem;
  font-weight: 650;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--ink); }

.theme-toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 50%;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.theme-icon {
  width: 14px;
  height: 14px;
  border: 2px solid currentColor;
  border-radius: 50%;
}

html[data-theme="dark"] .theme-icon {
  border-radius: 4px 50% 50% 50%;
  transform: rotate(-25deg);
  background: currentColor;
}

.eyebrow {
  margin: 0 0 .85rem;
  color: var(--accent);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .14em;
  line-height: 1.4;
  text-transform: uppercase;
}

.home-intro {
  padding-block: clamp(5.5rem, 11vw, 8rem);
  border-bottom: 1px solid var(--line);
}

.home-narrow { max-width: 780px; margin-left: max(24px, calc((100vw - 960px) / 2)); }

.home-intro h1,
.page-heading h1 {
  margin: 0;
  font-family: var(--serif);
  font-size: clamp(3.2rem, 7vw, 5.25rem);
  font-weight: 600;
  letter-spacing: -.055em;
  line-height: 1;
}

.home-lede {
  max-width: 680px;
  margin: 1.7rem 0 0;
  color: var(--muted);
  font-size: clamp(1.05rem, 2vw, 1.2rem);
}

.home-links { display: flex; flex-wrap: wrap; gap: 1.6rem; margin-top: 2rem; }
.home-links a,
.text-link { color: var(--accent); font-size: .9rem; font-weight: 700; text-decoration: none; }
.home-links a:hover,
.text-link:hover { text-decoration: underline; text-underline-offset: .25em; }

.compact-section { padding-block: clamp(4rem, 8vw, 6rem); }
.compact-section + .compact-section { border-top: 1px solid var(--line); }

.split-heading {
  display: grid;
  grid-template-columns: minmax(190px, .55fr) minmax(0, 1.45fr);
  gap: 4rem;
}

.section-note { margin: 0; color: var(--muted); font-size: .92rem; }
.project-list { border-top: 1px solid var(--line); }

.project-row {
  display: grid;
  grid-template-columns: minmax(145px, .65fr) minmax(0, 1.35fr) auto;
  gap: 1.5rem;
  align-items: start;
  padding-block: 1.35rem;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.project-row strong { display: block; font-family: var(--serif); font-size: 1.22rem; line-height: 1.3; }
.project-row small { display: block; margin-top: .25rem; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .08em; }
.project-row > span:nth-child(2) { color: var(--muted); }
.project-row > span:last-child { color: var(--accent); }
.project-list > .text-link { display: inline-block; margin-top: 1.5rem; }

.plain-copy h2 {
  margin: 0 0 .75rem;
  font-family: var(--serif);
  font-size: 2rem;
  letter-spacing: -.035em;
}

.plain-copy p { margin: 0 0 1.25rem; color: var(--muted); }

.page-shell-no-heading { padding-top: clamp(2.5rem, 5vw, 4rem); }
.page-shell.work-page { padding-top: clamp(1.75rem, 3.5vw, 2.75rem); }

.note-entry {
  max-width: 46rem;
  padding-block: 1.75rem 2rem;
  border-bottom: 1px solid var(--line);
}

.note-entry time { color: var(--muted); font-size: .82rem; }
.note-entry h2 { margin: .45rem 0 0; font-family: var(--serif); font-size: 1.55rem; letter-spacing: -.025em; }
.note-entry h2 a { color: inherit; text-decoration: none; }
.note-entry h2 a:hover { color: var(--accent); }
.note-entry p { margin: .6rem 0 0; color: var(--muted); }
.note-read { display: inline-block; margin-top: .85rem; font-size: .86rem; text-decoration: none; }
.note-read span { color: var(--accent); }

.page-shell { padding-block: clamp(4.5rem, 9vw, 7rem); }
.page-shell:has(.compact-heading) { padding-top: clamp(2.5rem, 5vw, 4rem); }
.page-heading { max-width: 780px; margin-bottom: 4rem; }
.page-heading h1 { font-size: clamp(3.2rem, 7vw, 4.8rem); }
.page-heading.compact-heading { margin-bottom: 3rem; }
.page-heading.compact-heading h1 { font-size: clamp(2.8rem, 5vw, 3.8rem); }
.page-intro { max-width: 700px; margin: 1.5rem 0 0; color: var(--muted); font-size: 1.15rem; }

.prose { max-width: 820px; }
.prose > *:first-child { margin-top: 0; }
.prose h2 { margin: 3.5rem 0 1.1rem; font-family: var(--serif); font-size: 2rem; letter-spacing: -.035em; }
.work-page .prose h2 { font-size: clamp(2.25rem, 4vw, 2.7rem); }
.prose h3 { margin: 2.4rem 0 .65rem; font-family: var(--serif); font-size: 1.4rem; }
.prose p,
.prose li { color: var(--muted); }
.prose strong { color: var(--ink); }
.prose a { color: var(--accent); text-underline-offset: .2em; }
.prose hr { margin: 3.5rem 0; border: 0; border-top: 1px solid var(--line); }

.about-intro {
  display: grid;
  grid-template-columns: minmax(190px, .55fr) minmax(0, 1.45fr);
  align-items: center;
  gap: clamp(2rem, 6vw, 4.5rem);
  margin-bottom: 3rem;
}

.about-portrait {
  margin: 0;
  overflow: hidden;
  border-radius: 2px;
  background: var(--paper-raised);
}

.about-portrait img {
  display: block;
  width: 100%;
  height: auto;
}

.about-intro-copy > *:first-child { margin-top: 0; }
.about-intro-copy > *:last-child { margin-bottom: 0; }

.feature-grid,
.about-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  column-gap: 2.5rem;
  row-gap: 0;
  margin-block: 1.5rem 2.5rem;
}

.feature-card,
.about-card {
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
}

.feature-card h3,
.about-card h3 { margin-top: 0; }
.feature-card p:last-child,
.about-card p:last-child { margin-bottom: 0; }

.link-row { display: flex; flex-wrap: wrap; gap: 1.25rem; margin-block: 1.5rem; }
.archive-link { color: var(--accent) !important; text-decoration: none; font-size: .9rem; font-weight: 700; }
.archive-link:hover { text-decoration: underline; text-underline-offset: .25em; }

.timeline { margin: 2rem 0; border-left: 1px solid var(--line); }
.timeline-item { position: relative; padding: 0 0 2rem 1.6rem; }
.timeline-item::before { content: ""; position: absolute; left: -4px; top: .55rem; width: 7px; height: 7px; border-radius: 50%; background: var(--accent); }
.timeline-item h3 { margin: 0; }
.timeline-item p { margin: .25rem 0 0; }

.site-footer { border-top: 1px solid var(--line); }
.footer-inner { display: grid; grid-template-columns: 1fr auto; gap: 2rem; padding-block: 3rem; }
.footer-inner p { margin: 0; color: var(--muted); font-size: .84rem; }
.footer-name { color: var(--ink) !important; font-family: var(--serif); font-size: 1.1rem !important; font-weight: 700; }
.footer-links { display: flex; flex-wrap: wrap; gap: 1rem; align-items: start; }
.footer-links a { color: var(--muted); font-size: .82rem; text-decoration: none; }
.footer-links a:hover { color: var(--accent); }
.footer-meta { grid-column: 1 / -1; padding-top: 1.5rem; border-top: 1px solid var(--line); }

@media (max-width: 760px) {
  .split-heading { grid-template-columns: 1fr; gap: 2rem; }
  .feature-grid,
  .about-grid { grid-template-columns: 1fr; }
  .about-intro { grid-template-columns: minmax(190px, 300px) minmax(0, 1fr); gap: 2rem; }
}

@media (max-width: 640px) {
  body { font-size: 16px; }
  .header-inner,
  .footer-inner,
  .section-inner,
  .page-shell { width: min(100% - 32px, 960px); }
  .header-inner { min-height: 64px; gap: .8rem; }
  .brand { font-size: 1rem; }
  .brand-mark { transform: scale(.88); transform-origin: left center; }
  .header-actions { gap: .65rem; }
  .site-nav { gap: .8rem; }
  .site-nav a { font-size: .8rem; }
  .theme-toggle { width: 32px; height: 32px; }
  .home-intro { padding-block: 4.5rem; }
  .home-narrow { margin-inline: auto; }
  .home-intro h1 { font-size: clamp(3rem, 15vw, 4.3rem); }
  .project-row { grid-template-columns: minmax(110px, .65fr) minmax(0, 1.35fr); gap: 1rem; }
  .project-row > span:last-child { display: none; }
  .footer-inner { grid-template-columns: 1fr; }
  .footer-meta { grid-column: auto; }
  .about-intro { grid-template-columns: 1fr; margin-bottom: 2.5rem; }
  .about-portrait { width: min(280px, 72vw); }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
}