:root {
  --night: #100f14;
  --deep: #211829;
  --violet: #6f4d8b;
  --copper: #d8a66d;
  --sand: #f7eadc;
  --muted: #d8c7ba;
  --line: rgba(247,234,220,.18);
  --glass: rgba(16,15,20,.64);
  --soft: rgba(247,234,220,.065);
  --accent-soft: rgba(216,166,109,.12);
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 82% 18%, rgba(111,77,139,.46), transparent 34%),
    radial-gradient(circle at 15% 18%, rgba(216,166,109,.20), transparent 30%),
    linear-gradient(135deg, var(--night), var(--deep));
  color: var(--sand);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.035) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: linear-gradient(to bottom, rgba(0,0,0,.55), transparent 85%);
  pointer-events: none;
}

a {
  color: inherit;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
  padding: 1rem clamp(1rem, 4vw, 3rem);
  background: rgba(16,15,20,.74);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(18px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .75rem;
  text-decoration: none;
}

.brand-logo-wrap {
  display: grid;
  place-items: center;
  width: 3rem;
  height: 3rem;
  border-radius: 999px;
  border: 1px solid rgba(216,166,109,.45);
  background: rgba(247,234,220,.92);
  overflow: hidden;
}

.brand-logo-wrap img {
  width: 2.35rem;
  height: 2.35rem;
  object-fit: contain;
  display: block;
}

.brand-mark {
  display: block;
  color: var(--sand);
  font-size: .98rem;
  font-weight: 850;
}

.brand-subline {
  display: block;
  color: var(--muted);
  font-size: .78rem;
}

.main-nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: .35rem;
}

.main-nav a {
  text-decoration: none;
  color: var(--muted);
  padding: .45rem .62rem;
  border-radius: 999px;
  font-size: .86rem;
}

.main-nav a:hover {
  background: var(--soft);
  color: var(--sand);
}

.site-main {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 4rem) 0 3rem;
}

.page-hero,
.content-card {
  border: 1px solid var(--line);
  border-radius: 34px;
  background: var(--glass);
  box-shadow: 0 30px 100px rgba(0,0,0,.34);
  backdrop-filter: blur(18px);
}

.page-hero {
  padding: clamp(1.5rem, 4vw, 3rem);
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(230px, 330px);
  gap: 1.2rem;
  align-items: center;
}

.eyebrow,
.book-kicker {
  color: var(--copper);
  font-size: .78rem;
  font-weight: 850;
  letter-spacing: .20em;
  text-transform: uppercase;
}

h1 {
  margin: .8rem 0 0;
  max-width: 780px;
  font-size: clamp(2.15rem, 5vw, 4.8rem);
  line-height: .96;
  letter-spacing: -.06em;
}

h2 {
  margin-top: 1.9rem;
  margin-bottom: .75rem;
  font-size: clamp(1.35rem, 2.6vw, 2.05rem);
  line-height: 1.15;
  letter-spacing: -.035em;
}

p,
li {
  color: var(--muted);
  line-height: 1.72;
}

.lead {
  max-width: 720px;
  font-size: clamp(1rem, 1.5vw, 1.2rem);
}

.hero-actions,
.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: .78rem 1rem;
  border-radius: 999px;
  border: 1px solid rgba(216,166,109,.38);
  text-decoration: none;
  font-weight: 850;
}

.button-primary {
  background: var(--copper);
  color: var(--night);
  border-color: transparent;
}

.button-secondary {
  background: var(--soft);
  color: var(--sand);
}

.hero-panel,
.start-intro,
.closing-panel {
  border: 1px solid rgba(216,166,109,.30);
  border-radius: 26px;
  padding: 1.2rem;
  background: var(--accent-soft);
}

.hero-panel strong {
  display: block;
  color: var(--sand);
  margin-bottom: .4rem;
}

.hero-panel p,
.start-intro p,
.closing-panel p {
  margin: 0;
}

.content-shell {
  margin-top: 1rem;
}

.content-card {
  padding: clamp(1.35rem, 3vw, 2.6rem);
}

.start-intro {
  margin-bottom: 1.4rem;
}

.start-intro h2 {
  margin-top: 0;
}

.child-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: .9rem;
  margin: 1.1rem 0 1.8rem;
}

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

.child-card {
  display: block;
  min-height: 10rem;
  padding: 1.1rem;
  border-radius: 22px;
  border: 1px solid var(--line);
  background: var(--soft);
  text-decoration: none;
}

.child-card:hover {
  border-color: rgba(216,166,109,.38);
  background: rgba(255,255,255,.09);
}

.child-title {
  display: block;
  color: var(--sand);
  font-weight: 850;
  font-size: 1.08rem;
}

.child-summary {
  display: block;
  margin-top: .45rem;
  color: var(--muted);
  line-height: 1.55;
}

.book-feature {
  display: grid;
  grid-template-columns: minmax(190px, 280px) minmax(0, 1fr);
  gap: clamp(1rem, 3vw, 2rem);
  align-items: center;
  margin: 2rem 0;
  padding: clamp(1.1rem, 3vw, 2rem);
  border-radius: 30px;
  border: 1px solid rgba(216,166,109,.30);
  background:
    radial-gradient(circle at 10% 10%, rgba(216,166,109,.18), transparent 36%),
    var(--soft);
}

.book-cover-wrap {
  border-radius: 24px;
  background: rgba(247,234,220,.92);
  border: 1px solid rgba(216,166,109,.34);
  padding: .7rem;
  box-shadow: 0 24px 70px rgba(0,0,0,.35);
}

.book-cover-wrap img {
  width: 100%;
  display: block;
  border-radius: 18px;
}

.book-copy h2 {
  margin-top: .35rem;
}

.closing-panel {
  margin-top: 2rem;
  text-align: center;
}

.closing-panel h2 {
  margin-top: 0;
}

.site-footer {
  width: min(1120px, calc(100% - 2rem));
  margin: 0 auto;
  padding: 1.6rem 0 2rem;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  color: rgba(247,234,220,.68);
  border-top: 1px solid var(--line);
}

.site-footer a {
  color: rgba(247,234,220,.72);
  text-decoration: none;
  margin-left: .8rem;
}

.site-footer a:hover {
  color: var(--sand);
}

@media (max-width: 900px) {
  .site-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .main-nav {
    justify-content: flex-start;
  }

  .hero-layout,
  .child-grid,
  .child-grid-3,
  .book-feature {
    grid-template-columns: 1fr;
  }

  .book-cover-wrap {
    max-width: 280px;
  }
}

@media (max-width: 680px) {
  .site-main,
  .site-footer {
    width: min(100% - 1rem, 1120px);
  }

  .page-hero,
  .content-card {
    border-radius: 26px;
  }

  h1 {
    font-size: clamp(2rem, 11vw, 3.2rem);
  }

  .site-footer {
    flex-direction: column;
  }

  .site-footer a {
    margin-left: 0;
    margin-right: .8rem;
  }
}