:root {
  --bg: #eef4fa;
  --bg-soft: #f7fbff;
  --paper: #fdfefe;
  --ink: #0f1834;
  --muted: #4e5f7b;
  --line: rgba(9, 11, 60, 0.12);
  --accent: #79a5cf;
  --accent-dark: #171d4b;
  --accent-soft: #d8e7f6;
  --gold: #9cb9da;
  --navy: #090b3c;
  --shadow: 0 18px 40px rgba(9, 11, 60, 0.14);
  --radius: 24px;
  --radius-sm: 16px;
  --max: 1180px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(121, 165, 207, 0.32), transparent 30%),
    radial-gradient(circle at top right, rgba(23, 29, 75, 0.16), transparent 24%),
    linear-gradient(180deg, #f5faff 0%, #eef4fa 42%, #e4edf8 100%);
  font-family: "Avenir Next", "Segoe UI", sans-serif;
  line-height: 1.6;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.site-shell {
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

.site-shell::before,
.site-shell::after {
  content: "";
  position: fixed;
  inset: auto;
  width: 26rem;
  height: 26rem;
  border-radius: 50%;
  filter: blur(20px);
  pointer-events: none;
  z-index: -1;
}

.site-shell::before {
  left: -12rem;
  bottom: -10rem;
  background: rgba(9, 11, 60, 0.12);
}

.site-shell::after {
  right: -8rem;
  top: 7rem;
  background: rgba(121, 165, 207, 0.18);
}

.container {
  width: min(calc(100% - 2rem), var(--max));
  margin: 0 auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(247, 251, 255, 0.82);
  border-bottom: 1px solid rgba(9, 11, 60, 0.08);
}

.nav-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.brand-mark {
  width: 2.7rem;
  height: 2.7rem;
  border-radius: 18px;
  background: linear-gradient(145deg, #79a5cf, #090b3c);
  color: #f7fbff;
  display: grid;
  place-items: center;
  font-weight: 800;
  box-shadow: var(--shadow);
}

.brand-copy strong,
.brand-copy span {
  display: block;
}

.brand-copy strong {
  font-size: 0.92rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.brand-copy span {
  font-size: 0.82rem;
  color: var(--muted);
}

.nav-toggle {
  display: none;
  border: 0;
  background: transparent;
  padding: 0.25rem;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 1.45rem;
  height: 2px;
  margin: 0.28rem 0;
  background: var(--ink);
  border-radius: 999px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  flex-wrap: wrap;
}

.nav-links a {
  padding: 0.7rem 1rem;
  border-radius: 999px;
  color: var(--muted);
  font-size: 0.96rem;
  transition: 180ms ease;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--paper);
  background: var(--navy);
}

.page {
  padding: 2.5rem 0 5rem;
}

.eyebrow {
  display: inline-flex;
  gap: 0.45rem;
  align-items: center;
  padding: 0.45rem 0.85rem;
  border: 1px solid rgba(121, 165, 207, 0.5);
  border-radius: 999px;
  color: var(--navy);
  background: rgba(247, 251, 255, 0.9);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.hero {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 2rem;
  align-items: center;
  padding-top: 2rem;
}

.hero h1,
.page-title h1,
.section h2,
.quote-card blockquote,
.author-lead h2,
.book-panel h2 {
  font-family: "Baskerville", "Iowan Old Style", "Palatino Linotype", serif;
}

.hero h1,
.page-title h1 {
  margin: 1rem 0 1rem;
  font-size: clamp(2.7rem, 6vw, 5.3rem);
  line-height: 0.96;
  letter-spacing: -0.03em;
}

.hero p,
.page-title p,
.section-intro {
  color: var(--muted);
  font-size: 1.08rem;
  max-width: 62ch;
}

.cta-row,
.button-row {
  display: flex;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-top: 1.6rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  min-height: 3.15rem;
  padding: 0.9rem 1.25rem;
  border-radius: 999px;
  border: 1px solid transparent;
  font-weight: 700;
  transition: 180ms ease;
}

.button-primary {
  color: #f7fbff;
  background: linear-gradient(135deg, var(--accent), var(--accent-dark));
  box-shadow: 0 14px 30px rgba(23, 29, 75, 0.24);
}

.button-primary:hover {
  transform: translateY(-1px);
}

.button-secondary {
  color: var(--navy);
  border-color: rgba(35, 56, 77, 0.18);
  background: rgba(255, 255, 255, 0.65);
}

.metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.9rem;
  margin-top: 1.75rem;
}

.metric {
  background: rgba(253, 254, 255, 0.84);
  border: 1px solid rgba(9, 11, 60, 0.08);
  border-radius: var(--radius-sm);
  padding: 1rem 1rem 0.9rem;
  box-shadow: var(--shadow);
}

.metric strong,
.stat strong {
  display: block;
  font-size: 1.8rem;
  font-family: "Baskerville", "Iowan Old Style", "Palatino Linotype", serif;
}

.metric span,
.stat span {
  display: block;
  color: var(--muted);
  font-size: 0.92rem;
}

.book-showcase {
  position: relative;
  padding: 2rem;
}

.book-showcase::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, rgba(23, 29, 75, 0.96), rgba(9, 11, 60, 0.94)),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06), transparent);
  border-radius: 36px;
  box-shadow: 0 26px 60px rgba(9, 11, 60, 0.28);
}

.book-stack {
  position: relative;
  display: grid;
  gap: 1rem;
  justify-items: center;
}

.book-cover {
  width: min(100%, 340px);
  border-radius: 18px;
  box-shadow: 0 24px 44px rgba(0, 0, 0, 0.34);
  border: 3px solid rgba(255, 255, 255, 0.08);
}

.book-note {
  width: min(100%, 360px);
  background: rgba(247, 251, 255, 0.94);
  border-radius: 18px;
  padding: 1rem 1.1rem;
  color: var(--ink);
}

.book-note strong {
  display: block;
  margin-bottom: 0.35rem;
}

.section {
  margin-top: 4rem;
}

.section h2 {
  margin: 0 0 0.7rem;
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.05;
}

.grid-3,
.grid-2,
.chapter-grid,
.event-grid,
.buy-grid,
.author-layout,
.resource-stack {
  display: grid;
  gap: 1.1rem;
}

.grid-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.card,
.chapter-card,
.event-card,
.retailer-card,
.author-card,
.quote-card,
.book-panel {
  background: rgba(255, 253, 248, 0.84);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.card,
.chapter-card,
.event-card,
.retailer-card,
.book-panel {
  padding: 1.4rem;
}

.card h3,
.chapter-card h3,
.event-card h3,
.retailer-card h3,
.author-card h3,
.book-panel h2 {
  margin: 0 0 0.6rem;
  font-size: 1.28rem;
}

.card p,
.chapter-card p,
.event-card p,
.retailer-card p,
.author-card p,
.book-panel p,
.bullet-list li,
.chapter-list li {
  color: var(--muted);
}

.chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 0.9rem;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  background: rgba(121, 165, 207, 0.16);
  color: var(--navy);
  font-size: 0.84rem;
}

.quote-card {
  padding: 1.5rem;
  background: linear-gradient(135deg, rgba(9, 11, 60, 0.98), rgba(23, 29, 75, 0.94));
  color: #f7fbff;
}

.quote-card blockquote {
  margin: 0;
  font-size: clamp(1.4rem, 2.6vw, 2.1rem);
  line-height: 1.2;
}

.quote-card cite {
  display: block;
  margin-top: 1rem;
  color: rgba(247, 241, 231, 0.76);
  font-style: normal;
}

.page-title {
  padding-top: 1rem;
}

.chapter-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 2rem;
}

.chapter-number,
.event-date,
.retailer-tag {
  display: inline-flex;
  align-items: center;
  padding: 0.35rem 0.65rem;
  border-radius: 999px;
  background: rgba(121, 165, 207, 0.2);
  color: var(--accent-dark);
  font-size: 0.82rem;
  font-weight: 700;
}

.chapter-card ul,
.bullet-list,
.chapter-list {
  margin: 0.8rem 0 0;
  padding-left: 1rem;
}

.chapter-card li + li,
.bullet-list li + li,
.chapter-list li + li {
  margin-top: 0.35rem;
}

.event-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
  margin-top: 2rem;
}

.event-card {
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.event-link,
.retailer-link,
.text-link {
  color: var(--accent-dark);
  font-weight: 700;
}

.author-layout {
  grid-template-columns: 0.95fr 1.05fr;
  align-items: start;
  margin-top: 2rem;
}

.author-card {
  overflow: hidden;
}

.author-photo {
  aspect-ratio: 4 / 4.2;
  width: 100%;
  object-fit: cover;
}

.author-card-body {
  padding: 1.4rem;
}

.author-lead {
  padding: 1.4rem;
}

.author-lead h2 {
  margin: 0 0 0.8rem;
  font-size: clamp(2.2rem, 3vw, 3.2rem);
  line-height: 1;
}

.stat-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.8rem;
  margin-top: 1.2rem;
}

.stat {
  padding: 1rem;
  border-radius: 20px;
  background: rgba(121, 165, 207, 0.14);
}

.buy-grid {
  grid-template-columns: 0.88fr 1.12fr;
  align-items: start;
  margin-top: 2rem;
}

.resource-stack {
  grid-template-columns: 1fr;
  margin-top: 2rem;
}

.resource-accordion {
  background: rgba(255, 253, 248, 0.84);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.resource-accordion summary {
  list-style: none;
  cursor: pointer;
  padding: 1.3rem 1.4rem;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--navy);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.resource-accordion summary::-webkit-details-marker {
  display: none;
}

.resource-accordion summary::after {
  content: "+";
  font-size: 1.5rem;
  line-height: 1;
  color: var(--accent-dark);
}

.resource-accordion[open] summary::after {
  content: "-";
}

.resource-body {
  padding: 0 1.4rem 1.4rem;
  border-top: 1px solid rgba(29, 39, 51, 0.08);
}

.resource-item + .resource-item {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid rgba(29, 39, 51, 0.08);
}

.resource-item h3 {
  margin: 0 0 0.45rem;
  font-size: 1.08rem;
}

.resource-item p {
  margin: 0;
  color: var(--muted);
}

.book-panel {
  position: sticky;
  top: 6.5rem;
}

.book-panel .book-cover {
  width: min(100%, 300px);
  margin-bottom: 1.2rem;
}

.retailers {
  display: grid;
  gap: 1rem;
}

.retailer-card {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
}

.retailer-copy {
  flex: 1;
}

.retailer-card .button {
  flex-shrink: 0;
}

.footer {
  padding: 2rem 0 3rem;
  color: var(--muted);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding-top: 1rem;
  border-top: 1px solid rgba(29, 39, 51, 0.08);
}

@media (max-width: 980px) {
  .hero,
  .author-layout,
  .buy-grid {
    grid-template-columns: 1fr;
  }

  .grid-3,
  .event-grid,
  .stat-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .book-panel {
    position: static;
  }
}

@media (max-width: 760px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    width: 100%;
    padding-bottom: 1rem;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-wrap {
    flex-wrap: wrap;
    padding: 0.8rem 0;
  }

  .nav-links a {
    width: 100%;
    border-radius: 16px;
  }

  .metrics,
  .grid-3,
  .grid-2,
  .event-grid,
  .stat-grid {
    grid-template-columns: 1fr;
  }

  .hero h1,
  .page-title h1 {
    font-size: clamp(2.35rem, 14vw, 3.6rem);
  }

  .page {
    padding-bottom: 4rem;
  }

  .retailer-card {
    flex-direction: column;
  }
}