:root {
  --ink: #10213f;
  --muted: #5c6b76;
  --paper: #fffdf8;
  --line: rgb(16 33 63 / 12%);
  --blue: #2f6f9f;
  --teal: #278c83;
  --gold: #d79b2b;
  --green: #3f8f58;
  --panel: rgb(255 255 255 / 78%);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background:
    radial-gradient(
      circle at 12% 0%,
      rgb(226 242 238 / 82%),
      transparent 32rem
    ),
    radial-gradient(
      circle at 88% 10%,
      rgb(251 235 199 / 88%),
      transparent 34rem
    ),
    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: 28px 0 90px;
}

.site-home {
  color: var(--blue);
  display: inline-flex;
  font-size: 0.9rem;
  font-weight: 800;
  margin-bottom: 34px;
  text-decoration: none;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(0, 1.18fr);
  gap: 34px;
  align-items: center;
}

.eyebrow {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  margin: 0 0 14px;
  text-transform: uppercase;
}

h1,
h2,
h3 {
  letter-spacing: 0;
}

h1 {
  font-size: clamp(3.8rem, 8vw, 6.6rem);
  line-height: 0.9;
  margin: 0 0 22px;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.35rem);
  line-height: 1;
  margin: 0 0 18px;
}

h3 {
  font-size: 1.25rem;
  line-height: 1.2;
  margin: 0 0 10px;
}

p {
  margin: 0 0 1rem;
}

.dek,
.intro {
  color: var(--muted);
  font-family:
    ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: clamp(1.18rem, 2vw, 1.46rem);
}

.hero-figure,
.image-panel {
  margin: 0;
}

.hero-figure img,
.image-panel img {
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 24px 70px rgb(37 53 58 / 16%);
  display: block;
  height: auto;
  width: 100%;
}

.toc {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 42px 0;
}

.toc a,
.links a {
  background: rgb(255 255 255 / 82%);
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--blue);
  font-size: 0.92rem;
  font-weight: 800;
  padding: 0.55rem 0.9rem;
  text-decoration: none;
}

.intro {
  border-left: 5px solid var(--gold);
  margin: 54px 0 74px;
  max-width: 850px;
  padding-left: 26px;
}

.chapter {
  align-items: center;
  display: grid;
  gap: 34px;
  grid-template-columns: 74px minmax(0, 0.94fr) minmax(0, 1.06fr);
  margin: 72px 0;
}

.chapter.reverse {
  grid-template-columns: 74px minmax(0, 1.06fr) minmax(0, 0.94fr);
}

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

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

.chapter-number {
  align-self: start;
  color: rgb(16 33 63 / 18%);
  font-family:
    ui-serif, "Iowan Old Style", "Palatino Linotype", Palatino, Georgia, serif;
  font-size: 4.8rem;
  font-weight: 900;
  line-height: 0.8;
}

.chapter-copy p {
  color: var(--muted);
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: 0 20px 62px rgb(37 53 58 / 12%);
}

.callout,
.comparison {
  padding: 30px;
}

.callout {
  background:
    linear-gradient(145deg, rgb(255 255 255 / 90%), rgb(244 250 255 / 84%)),
    var(--panel);
}

.comparison {
  background:
    linear-gradient(145deg, rgb(255 255 255 / 90%), rgb(255 248 230 / 88%)),
    var(--panel);
}

.comparison ul {
  color: var(--muted);
  margin: 0;
  padding-left: 1.25rem;
}

.comparison li + li {
  margin-top: 0.45rem;
}

.strip {
  background:
    linear-gradient(135deg, rgb(16 33 63 / 96%), rgb(34 92 116 / 94%)),
    var(--ink);
  border-radius: 30px;
  color: white;
  margin: 78px 0;
  padding: 40px;
}

.strip h2 {
  color: white;
  max-width: 820px;
}

.cards {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin-top: 28px;
}

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

.cards span {
  align-items: center;
  background: var(--gold);
  border-radius: 999px;
  color: var(--ink);
  display: inline-flex;
  font-size: 0.86rem;
  font-weight: 900;
  height: 28px;
  justify-content: center;
  margin-bottom: 16px;
  width: 28px;
}

.cards strong {
  display: block;
  font-size: 1.14rem;
  margin-bottom: 10px;
}

.cards p {
  color: rgb(255 255 255 / 78%);
  font-size: 0.96rem;
  margin: 0;
}

.closing {
  background:
    radial-gradient(
      circle at 12% 16%,
      rgb(216 237 232 / 80%),
      transparent 22rem
    ),
    rgb(255 255 255 / 76%);
  border: 1px solid var(--line);
  border-radius: 30px;
  box-shadow: 0 24px 70px rgb(37 53 58 / 14%);
  margin-top: 76px;
  padding: 42px;
}

.closing p {
  color: var(--muted);
  max-width: 840px;
}

.links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

@media (max-width: 900px) {
  main {
    width: min(100% - 28px, 720px);
  }

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

  .chapter-number {
    font-size: 3.6rem;
  }

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

  .cards {
    grid-template-columns: 1fr;
  }

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