:root {
  --md-primary-fg-color: #2f5d62;
  --md-primary-fg-color--light: #5f8b8f;
  --md-primary-fg-color--dark: #1f4145;
  --md-accent-fg-color: #b9792b;
}

.md-header {
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.08);
}

.md-typeset h1,
.md-typeset h2,
.md-typeset h3 {
  letter-spacing: 0.01em;
}

.md-typeset .hero {
  padding: 1.5rem 0 0.75rem;
}

.md-typeset .hero-card {
  border: 1px solid rgba(0,0,0,.08);
  border-radius: .85rem;
  padding: 1rem 1.1rem;
  background: rgba(255,255,255,.5);
}

.md-typeset .book-note {
  border-left: 4px solid var(--md-accent-fg-color);
  padding-left: 1rem;
  margin: 1rem 0;
}

.md-typeset .grid.cards > ul > li,
.md-typeset .grid.cards > ol > li {
  border-radius: 0.6rem;
}

.md-typeset .caption {
  font-size: 0.9rem;
  opacity: 0.8;
}

.md-typeset .smallcaps {
  letter-spacing: .08em;
  text-transform: uppercase;
  font-size: .8rem;
  opacity: .8;
}

/* ---- Series homepage (inspired by card-grid landing pages) ---- */
.md-typeset .series-hero {
  text-align: center;
  padding: 2.5rem 1rem 1.5rem;
}
.md-typeset .series-hero .eyebrow {
  letter-spacing: .16em;
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 700;
  color: var(--md-primary-fg-color);
  margin: 0 0 .6rem;
}
.md-typeset .series-hero h1 {
  font-size: 2.4rem;
  line-height: 1.15;
  margin: 0 auto .7rem;
  max-width: 18em;
}
.md-typeset .series-hero .tagline {
  font-size: 1.15rem;
  opacity: .85;
  max-width: 32em;
  margin: 0 auto;
}

/* Two-book row */
.md-typeset .book-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.2rem;
  margin: 2rem 0;
}
.md-typeset .book-card {
  border: 1px solid rgba(0,0,0,.1);
  border-radius: 1rem;
  padding: 1.4rem 1.4rem 1.2rem;
  background: rgba(255,255,255,.55);
  transition: transform .15s ease, box-shadow .15s ease;
}
.md-typeset .book-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0,0,0,.1);
}
.md-typeset .book-card h3 { margin-top: 0; }
.md-typeset .book-card .book-kicker {
  font-size: .74rem; letter-spacing: .1em; text-transform: uppercase;
  font-weight: 700; opacity: .6; display: block; margin-bottom: .3rem;
}
.md-typeset .book-card .book-links { margin-top: .8rem; }
[data-md-color-scheme="slate"] .md-typeset .book-card,
[data-md-color-scheme="slate"] .md-typeset .hero-card { background: rgba(255,255,255,.06); }

/* Section divider label */
.md-typeset .section-label {
  text-align: center;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .8rem;
  font-weight: 700;
  opacity: .6;
  margin: 2.5rem 0 1rem;
}

/* Hero call to action row */
.md-typeset .hero-cta {
  display: flex; gap: .7rem; justify-content: center; flex-wrap: wrap; margin-top: 1.4rem;
}
.md-typeset .hero-cta .md-button { margin: 0; }

/* Card grids sit a little tighter under a section label */
.md-typeset .section-label + .grid.cards,
.md-typeset .section-label + .hero-card { margin-top: .6rem; }

.md-typeset .hero-card {
  border: 1px solid rgba(0,0,0,.09);
  border-left: 4px solid var(--md-accent-fg-color);
  border-radius: .85rem;
  padding: 1.2rem 1.4rem;
  background: rgba(255,255,255,.55);
}
[data-md-color-scheme="slate"] .md-typeset .hero-card { background: rgba(255,255,255,.06); border-color: rgba(255,255,255,.14); }