:root {
  color-scheme: light dark;
  --paper: #f6f1e7;
  --ink: #1d1b16;
  --muted: #5f5a4e;
  --rule: #d8d0bf;
  --accent: #a83a0c;
  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, Charter, Georgia, serif;
  --sans: ui-sans-serif, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --mono: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

@media (prefers-color-scheme: dark) {
  :root {
    --paper: #16150f;
    --ink: #efe9db;
    --muted: #a9a291;
    --rule: #38352a;
    --accent: #f08a4b;
  }
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

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

body {
  margin: 0 auto;
  max-width: 68rem;
  min-height: 100vh;
  padding: 0 clamp(1rem, 4vw, 2.5rem);
  display: flex;
  flex-direction: column;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-text-size-adjust: 100%;
}

main { flex: 1; }

a {
  color: var(--accent);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 1px;
}

a:hover { text-decoration-thickness: 2px; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

h1, h2, h3 { margin: 0; }

.site-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  padding: 1.5rem 0;
}

.wordmark {
  color: var(--ink);
  font: 600 1.125rem var(--serif);
  text-decoration: none;
}

.site-header nav { display: flex; gap: 1.25rem; }

.site-header nav a {
  color: var(--muted);
  font-size: 0.9375rem;
  text-decoration: none;
}

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

.hero { padding: clamp(3rem, 9vw, 6.5rem) 0 clamp(3rem, 8vw, 5.5rem); }

.hero h1,
.prose h1 {
  font: 500 clamp(2.5rem, 7.5vw, 5rem)/1.04 var(--serif);
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.hero h1 { max-width: 16ch; }

.lede {
  margin: 1.5rem 0 0;
  max-width: 38rem;
  color: var(--muted);
  font-size: clamp(1.125rem, 2.2vw, 1.3125rem);
  line-height: 1.5;
}

section > h2 {
  color: var(--muted);
  font: 500 0.8125rem var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tools {
  margin-top: 1rem;
  border-top: 2px solid var(--ink);
}

.tool {
  display: grid;
  grid-template-columns: 12rem minmax(0, 1fr) auto;
  gap: 0.5rem 2rem;
  align-items: baseline;
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--rule);
}

.tool h3 {
  font: 500 1.75rem/1.2 var(--serif);
  letter-spacing: -0.01em;
}

.tool-body { max-width: 34rem; }

.tool p { margin: 0; }

.action {
  font-weight: 500;
  white-space: nowrap;
}

.how { padding: clamp(3.5rem, 8vw, 5.5rem) 0; }

.how p {
  margin: 0.75rem 0 0;
  max-width: 38rem;
  font: 400 clamp(1.25rem, 2.5vw, 1.625rem)/1.35 var(--serif);
}

.prose {
  max-width: 40rem;
  padding: clamp(3rem, 9vw, 6rem) 0;
}

.prose > p:not(.lede) { margin: 1.5rem 0 0; }

.fit {
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

.fit li { padding: 0.25rem 0; }

.about {
  display: grid;
  grid-template-columns: minmax(0, 40rem) minmax(0, 20rem);
  justify-content: space-between;
  align-items: start;
  gap: 4rem;
  padding: clamp(3rem, 9vw, 6rem) 0;
}

.about .prose { padding: 0; }

.about h1 { font-size: clamp(2.25rem, 5vw, 3.75rem); }

.portrait {
  position: sticky;
  top: 2rem;
  margin: 0;
  aspect-ratio: 4 / 5;
  overflow: hidden;
}

.portrait img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@media (max-width: 48rem) {
  .tool { grid-template-columns: minmax(0, 1fr); }
  .action { margin-top: 0.5rem; }
  .about { grid-template-columns: minmax(0, 1fr); gap: 2.5rem; }
  .portrait { position: static; order: -1; width: min(100%, 16rem); }
}