:root {
  --ink: #1e2a31;
  --muted: #61707b;
  --paper: #fffdf8;
  --line: rgb(30 42 49 / 10%);
  --teal: #2a8f82;
  --blue: #2f6f9f;
  --gold: #d29c3c;
  --navy: #10213f;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background:
    radial-gradient(circle at 8% 0%, rgb(239 247 244 / 90%), transparent 30rem),
    radial-gradient(
      circle at 92% 6%,
      rgb(250 236 207 / 86%),
      transparent 30rem
    ),
    var(--paper);
  color: var(--ink);
  font:
    18px/1.55 ui-sans-serif,
    system-ui,
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    sans-serif;
}

main {
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 34px 0 92px;
}

a {
  color: var(--blue);
  font-weight: 800;
}

code {
  border: 1px solid rgb(47 111 159 / 18%);
  border-radius: 6px;
  background: rgb(47 111 159 / 8%);
  padding: 0.08rem 0.3rem;
  font:
    0.88em/1.35 ui-monospace,
    SFMono-Regular,
    Menlo,
    Monaco,
    Consolas,
    monospace;
}

.site-home {
  display: inline-block;
  margin-bottom: 34px;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.74fr) minmax(420px, 1.26fr);
  gap: 36px;
  align-items: center;
}

.eyebrow {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
  text-transform: uppercase;
}

h1 {
  font-size: clamp(4rem, 8vw, 7.4rem);
  line-height: 0.88;
  margin: 0 0 24px;
}

.dek,
.intro p,
.chapter-copy p,
.final p {
  color: var(--muted);
  font-family:
    ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 1.18rem;
}

.hero-figure,
.panel {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgb(255 255 255 / 75%);
  box-shadow: 0 22px 60px rgb(37 53 58 / 12%);
  overflow: hidden;
}

.hero-figure img,
.image-panel img {
  display: block;
  width: 100%;
  height: auto;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 36px 0 26px;
}

.toc a {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgb(255 255 255 / 70%);
  color: var(--ink);
  padding: 0.5rem 0.82rem;
  text-decoration: none;
}

.intro {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 26px;
  margin: 34px 0 46px;
}

.chapter {
  display: grid;
  grid-template-columns: 92px minmax(0, 0.9fr) minmax(360px, 1.1fr);
  gap: 28px;
  align-items: center;
  margin: 48px 0;
}

.chapter.reverse {
  grid-template-columns: 92px minmax(360px, 1.1fr) minmax(0, 0.9fr);
}

.chapter.reverse .chapter-copy {
  grid-column: 3;
}

.chapter.reverse .panel {
  grid-column: 2;
  grid-row: 1;
}

.chapter-number {
  align-self: start;
  border-left: 4px solid var(--gold);
  color: var(--gold);
  font-size: 0.9rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  padding-left: 16px;
}

h2 {
  font-size: clamp(2.3rem, 4vw, 4.2rem);
  line-height: 0.95;
  margin: 0 0 18px;
}

.panel {
  padding: 28px;
}

.image-panel {
  padding: 0;
}

.callout,
.comparison {
  background: rgb(255 255 255 / 82%);
}

.callout h3,
.comparison h3 {
  color: var(--teal);
  font-size: 1.35rem;
  margin: 0 0 12px;
}

.callout p,
.comparison p {
  color: var(--muted);
  margin: 0;
}

.comparison ul {
  color: var(--muted);
  margin: 0;
  padding-left: 1.2rem;
}

.comparison li {
  margin: 0.45rem 0;
}

.strip {
  margin: 58px 0;
  border-radius: 30px;
  background: linear-gradient(
    135deg,
    rgb(16 33 63 / 97%),
    rgb(34 92 116 / 94%)
  );
  color: #fff;
  padding: 38px;
}

.strip h2 {
  color: #fff;
  margin-bottom: 24px;
}

.cards {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.cards div {
  border: 1px solid rgb(255 255 255 / 16%);
  border-radius: 20px;
  background: rgb(255 255 255 / 10%);
  padding: 18px;
}

.cards span {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  margin-bottom: 14px;
  border-radius: 999px;
  background: #f5c84c;
  color: var(--navy);
  font-weight: 900;
}

.cards strong {
  display: block;
  font-size: 1.05rem;
  margin-bottom: 9px;
}

.cards p {
  color: rgb(255 255 255 / 76%);
  font-size: 0.95rem;
  margin: 0;
}

.cards code {
  background: rgb(255 255 255 / 10%);
  border-color: rgb(255 255 255 / 20%);
  color: #fff;
}

.final {
  border: 1px solid var(--line);
  border-radius: 30px;
  background: rgb(255 255 255 / 78%);
  box-shadow: 0 22px 60px rgb(37 53 58 / 12%);
  margin-top: 58px;
  padding: 38px;
  text-align: center;
}

.final p {
  max-width: 760px;
  margin: 0 auto 20px;
}

@media (max-width: 900px) {
  main {
    width: min(100% - 28px, 760px);
  }

  .hero,
  .intro,
  .chapter,
  .chapter.reverse {
    grid-template-columns: 1fr;
  }

  .chapter-number,
  .chapter.reverse .chapter-copy,
  .chapter.reverse .panel {
    grid-column: auto;
    grid-row: auto;
  }

  .cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .cards {
    grid-template-columns: 1fr;
  }

  .strip,
  .final {
    padding: 26px;
  }
}