:root {
  --book-red: #A6192E;
  --book-ink: #0B1221;
  --book-muted: #5E6B7E;
  --book-line: rgba(15, 23, 42, 0.09);
  --book-paper: #FFFFFF;
  --book-soft: #F7F9FB;
  --book-sage: #2F6F5E;
  --book-amber: #A46A11;
  --book-blue: #315A8A;
  --book-container: 1180px;
  --book-shadow: 0 28px 70px -48px rgba(11, 18, 33, 0.48);
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--book-paper);
  color: var(--book-ink);
  font-family: var(--font-sans);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(calc(100% - 40px), var(--book-container)); margin: 0 auto; }

.book-hero {
  min-height: 92vh;
  display: grid;
  grid-template-columns: minmax(0, 1.08fr) minmax(280px, 0.72fr);
  align-items: center;
  gap: clamp(42px, 6vw, 92px);
  padding: clamp(150px, 12vw, 190px) 0 70px;
  position: relative;
}
.book-hero::before {
  content: "";
  position: absolute;
  inset: 118px auto auto 0;
  width: min(76vw, 860px);
  height: 1px;
  background: linear-gradient(90deg, rgba(166, 25, 46, 0.6), rgba(49, 90, 138, 0.12), transparent);
}
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--book-red);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.eyebrow::before {
  content: "";
  width: 32px;
  height: 2px;
  background: currentColor;
}
h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.04;
  letter-spacing: 0;
  margin: 0;
  color: var(--book-ink);
}
h1 {
  max-width: 800px;
  font-size: clamp(2.65rem, 5vw, 4.75rem);
  font-weight: 760;
}
.book-subtitle {
  display: block;
  max-width: 750px;
  margin: 0;
  padding-top: 32px;
  color: var(--book-muted);
  font-size: clamp(1.05rem, 1.65vw, 1.22rem);
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 34px;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: 52px;
  padding: 14px 22px;
  border-radius: 8px;
  font-weight: 800;
  font-size: 0.9rem;
  border: 1px solid var(--book-line);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.btn-primary {
  background: var(--book-red);
  color: #fff;
  border-color: var(--book-red);
  box-shadow: 0 18px 34px -24px rgba(166, 25, 46, 0.9);
}
.btn-secondary { background: #fff; color: var(--book-ink); }
.btn:hover { transform: translateY(-2px); box-shadow: var(--book-shadow); }

.cover-stage {
  justify-self: end;
  width: min(100%, 372px);
  position: relative;
}
.cover-stage::before {
  content: "";
  position: absolute;
  inset: 26px -24px -22px 28px;
  border: 1px solid rgba(49, 90, 138, 0.22);
  z-index: -1;
}
.cover-stage img {
  width: 100%;
  border-radius: 8px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  box-shadow: 24px 34px 70px -38px rgba(11, 18, 33, 0.62);
}
.book-meta {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--book-line);
  border-bottom: 1px solid var(--book-line);
  margin-bottom: clamp(70px, 9vw, 118px);
}
.meta-item {
  padding: 22px 26px;
  border-right: 1px solid var(--book-line);
  min-width: 0;
}
.meta-item:last-child { border-right: 0; }
.meta-label {
  display: block;
  color: var(--book-muted);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 6px;
}
.meta-value {
  color: var(--book-ink);
  font-size: 0.96rem;
  font-weight: 700;
  overflow-wrap: anywhere;
}
.section {
  padding-bottom: clamp(70px, 9vw, 118px);
}
.section-kicker {
  color: var(--book-red);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.section h2 {
  font-size: clamp(2.1rem, 4vw, 3.45rem);
  max-width: 820px;
  margin-bottom: 24px;
}
.lead {
  color: var(--book-muted);
  font-size: clamp(1rem, 1.55vw, 1.15rem);
  max-width: 840px;
  margin: 0;
}
.two-col {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(280px, 0.55fr);
  gap: clamp(36px, 6vw, 76px);
  align-items: start;
}
.accent-panel {
  border-left: 4px solid var(--book-sage);
  padding: 10px 0 10px 24px;
}
.accent-panel p {
  margin: 0;
  color: var(--book-ink);
  font-size: 1.04rem;
  font-weight: 650;
  line-height: 1.7;
}
.topic-grid, .findings-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 34px;
}
.topic, .finding {
  border: 1px solid var(--book-line);
  border-radius: 8px;
  padding: 24px;
  background: #fff;
  box-shadow: 0 18px 42px -34px rgba(11, 18, 33, 0.38);
}
.topic i, .finding i {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  margin-bottom: 18px;
  background: rgba(166, 25, 46, 0.08);
  color: var(--book-red);
}
.topic:nth-child(2) i, .finding:nth-child(2) i { background: rgba(47, 111, 94, 0.1); color: var(--book-sage); }
.topic:nth-child(3) i, .finding:nth-child(3) i { background: rgba(49, 90, 138, 0.1); color: var(--book-blue); }
.topic h3, .finding h3 { font-size: 1.22rem; font-weight: 750; margin-bottom: 10px; }
.topic p, .finding p { margin: 0; color: var(--book-muted); font-size: 0.96rem; }
.method-band {
  background: var(--book-soft);
  border-top: 1px solid var(--book-line);
  border-bottom: 1px solid var(--book-line);
  padding: clamp(58px, 8vw, 94px) 0;
  margin-bottom: clamp(70px, 9vw, 118px);
}
.method-list {
  display: grid;
  gap: 14px;
  margin: 34px 0 0;
  padding: 0;
  list-style: none;
}
.method-list li {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  align-items: start;
  padding: 20px 0;
  border-bottom: 1px solid rgba(15, 23, 42, 0.08);
}
.method-list li:last-child { border-bottom: 0; }
.method-list span {
  width: 42px;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: var(--book-ink);
  color: #fff;
  font-weight: 800;
  font-size: 0.86rem;
}
.method-list strong { display: block; margin-bottom: 4px; }
.method-list p { margin: 0; color: var(--book-muted); }
.toc {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: 34px;
  padding: 0;
  list-style: none;
}
.toc li {
  border-top: 1px solid var(--book-line);
  padding: 16px 0;
  color: var(--book-muted);
  font-weight: 650;
}
.toc strong { color: var(--book-ink); font-weight: 800; }
.evidence {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: clamp(30px, 5vw, 66px);
  align-items: start;
}
.stat-stack {
  display: grid;
  gap: 14px;
}
.stat {
  border-left: 4px solid var(--book-red);
  padding: 14px 0 14px 18px;
  background: linear-gradient(90deg, rgba(166, 25, 46, 0.055), transparent);
}
.stat:nth-child(2) { border-left-color: var(--book-sage); background: linear-gradient(90deg, rgba(47, 111, 94, 0.055), transparent); }
.stat:nth-child(3) { border-left-color: var(--book-amber); background: linear-gradient(90deg, rgba(164, 106, 17, 0.07), transparent); }
.stat strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.7rem;
  line-height: 1.05;
}
.stat span { color: var(--book-muted); font-size: 0.92rem; }
.notes {
  background: #fff;
  border: 1px solid var(--book-line);
  border-radius: 8px;
  padding: 28px;
}
.notes h3 { font-size: 1.3rem; margin-bottom: 14px; }
.notes ul { margin: 0; padding-left: 20px; color: var(--book-muted); }
.notes li { margin-bottom: 10px; }
.cta-band {
  border-top: 1px solid var(--book-line);
  padding: clamp(48px, 7vw, 76px) 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 28px;
}
.cta-band h2 { font-size: clamp(1.8rem, 3vw, 2.7rem); margin-bottom: 10px; }
.cta-band p { margin: 0; color: var(--book-muted); max-width: 650px; }
.book-footer {
  border-top: 1px solid var(--book-line);
  padding: 56px 0;
  color: var(--book-muted);
  text-align: center;
  font-size: 0.95rem;
}

@media (max-width: 900px) {
  .book-hero, .two-col, .evidence {
    grid-template-columns: 1fr;
  }
  .cover-stage {
    justify-self: center;
    width: min(82vw, 310px);
  }
  .book-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .meta-item:nth-child(2) { border-right: 0; }
  .meta-item:nth-child(-n+2) { border-bottom: 1px solid var(--book-line); }
  .topic-grid, .findings-grid, .toc { grid-template-columns: 1fr; }
  .cta-band { flex-direction: column; align-items: flex-start; }
}
@media (max-width: 560px) {
  .container { width: min(calc(100% - 28px), var(--book-container)); }
  .book-hero { padding-top: 142px; min-height: auto; }
  .hero-actions, .cta-band .btn { width: 100%; }
  .btn { width: 100%; }
  .book-meta { grid-template-columns: 1fr; }
  .meta-item { border-right: 0; border-bottom: 1px solid var(--book-line); padding: 18px 0; }
  .meta-item:last-child { border-bottom: 0; }
}