* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  color: #1a1a1a;
  line-height: 1.6;
  background: #fafafa;
}

h1, h2, h3, h4 {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  line-height: 1.2;
}

h1 { font-size: 3.5rem; margin-bottom: 1.5rem; }
h2 { font-size: 2.5rem; margin-bottom: 1rem; }
h3 { font-size: 1.5rem; margin-bottom: 0.75rem; }
h4 { font-size: 1.125rem; font-weight: 600; font-family: 'Inter', sans-serif; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.nav {
  background: #fff;
  border-bottom: 1px solid #e5e5e5;
  padding: 1.5rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-brand {
  font-family: 'Cormorant Garamond', serif;
  font-size: 1.5rem;
  font-weight: 600;
  color: #2c5f7c;
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  color: #4a4a4a;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
  color: #2c5f7c;
}

.hero {
  background: #fff;
  padding: 5rem 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero .container {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.hero-label {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #2c5f7c;
  font-weight: 600;
  margin-bottom: 1rem;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: #666;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 10px 40px rgba(0,0,0,0.1);
}

.btn-primary,
.btn-secondary {
  display: inline-block;
  padding: 1rem 2rem;
  text-decoration: none;
  font-weight: 500;
  border-radius: 3px;
  transition: all 0.3s;
  font-size: 0.95rem;
}

.btn-primary {
  background: #2c5f7c;
  color: #fff;
}

.btn-primary:hover {
  background: #234a5f;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(44,95,124,0.3);
}

.btn-secondary {
  background: transparent;
  color: #2c5f7c;
  border: 2px solid #2c5f7c;
}

.btn-secondary:hover {
  background: #2c5f7c;
  color: #fff;
}

.section {
  padding: 5rem 0;
  background: #fff;
}

.section-dark {
  padding: 5rem 0;
  background: #f5f5f5;
}

.section-light {
  padding: 5rem 0;
  background: #fafafa;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-header p {
  color: #666;
  font-size: 1.125rem;
  margin-top: 0.5rem;
}

.section-intro {
  text-align: center;
  color: #666;
  font-size: 1.125rem;
  margin-bottom: 3rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.card {
  background: #fafafa;
  padding: 2rem;
  border-radius: 4px;
  border: 1px solid #e5e5e5;
}

.card-number {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  color: #2c5f7c;
  margin-bottom: 1rem;
}

.card h3 {
  margin-bottom: 0.5rem;
}

.metric {
  color: #2c5f7c;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.card-list {
  list-style: none;
  margin-top: 1rem;
}

.card-list li {
  padding: 0.5rem 0;
  padding-left: 1.5rem;
  position: relative;
  color: #4a4a4a;
  font-size: 0.95rem;
}

.card-list li:before {
  content: '•';
  position: absolute;
  left: 0;
  color: #2c5f7c;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.split-image img {
  width: 100%;
  height: 400px;
  object-fit: cover;
  border-radius: 4px;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin: 2rem 0;
}

.stat-value {
  font-family: 'Cormorant Garamond', serif;
  font-size: 3rem;
  color: #2c5f7c;
  font-weight: 600;
}

.stat-label {
  font-size: 0.9rem;
  color: #666;
  margin-top: 0.5rem;
}

.note {
  margin-top: 2rem;
  color: #666;
  font-size: 0.95rem;
  font-style: italic;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  margin-bottom: 3rem;
}

.metric-card {
  text-align: center;
  padding: 2rem 1rem;
  background: #fafafa;
  border-radius: 4px;
}

.metric-value {
  font-family: 'Cormorant Garamond', serif;
  font-size: 2.5rem;
  color: #2c5f7c;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.metric-note {
  color: #666;
  font-size: 0.85rem;
}

.footer {
  background: #1a1a1a;
  color: #999;
  padding: 3rem 0;
  text-align: center;
}

.footer p {
  margin-bottom: 0.5rem;
}

.footer-note {
  font-size: 0.85rem;
  color: #666;
}

.page-header {
  background: #fff;
  padding: 4rem 0 3rem;
  border-bottom: 1px solid #e5e5e5;
}

.breadcrumb {
  font-size: 0.85rem;
  color: #999;
  margin-bottom: 1rem;
}

.breadcrumb a {
  color: #2c5f7c;
  text-decoration: none;
}

.page-subtitle {
  font-size: 1.25rem;
  color: #666;
  max-width: 800px;
}

.audience-segment {
  margin-bottom: 4rem;
  padding-bottom: 4rem;
  border-bottom: 1px solid #e5e5e5;
}

.audience-segment:last-child {
  border-bottom: none;
}

.segment-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 2rem;
}

.segment-size {
  background: #2c5f7c;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 3px;
  font-size: 0.85rem;
  font-weight: 600;
}

.segment-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-bottom: 2rem;
}

.segment-detail h4 {
  margin-bottom: 1rem;
  color: #2c5f7c;
}

.detail-list {
  list-style: none;
}

.detail-list li {
  padding: 0.4rem 0;
  color: #4a4a4a;
  font-size: 0.95rem;
}

.segment-image img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  border-radius: 4px;
  margin-top: 1rem;
}

.segment-description {
  color: #666;
  font-size: 1.05rem;
  line-height: 1.7;
}

.retarget-tier {
  background: #fff;
  padding: 2rem;
  border-radius: 4px;
  border: 1px solid #e5e5e5;
}

.tier-def {
  color: #666;
  font-size: 0.95rem;
  margin-bottom: 1rem;
}

.tier-action {
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid #e5e5e5;
  color: #4a4a4a;
  font-size: 0.95rem;
}

.cta-block {
  text-align: center;
  max-width: 700px;
  margin: 0 auto;
}

.cta-block h2 {
  margin-bottom: 1rem;
}

.cta-block p {
  color: #666;
  font-size: 1.05rem;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.cta-note {
  font-size: 0.95rem;
  color: #999;
  margin-top: 1rem;
}

.pillar-card {
  background: #fff;
  padding: 2rem;
  border-radius: 4px;
  border: 1px solid #e5e5e5;
}

.pillar-icon {
  width: 50px;
  height: 50px;
  background: #2c5f7c;
  color: #fff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.pillar-formats {
  margin-top: 1rem;
  font-size: 0.9rem;
  color: #666;
}

.format-showcase {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.format-block {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.format-visual img {
  width: 100%;
  height: 350px;
  object-fit: cover;
  border-radius: 4px;
  box-shadow: 0 4px 20px rgba(0,0,0,0.08);
}

.format-allocation {
  color: #2c5f7c;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

.copy-examples {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.copy-card {
  background: #fafafa;
  padding: 2rem;
  border-radius: 4px;
  border-left: 3px solid #2c5f7c;
}

.copy-label {
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: #2c5f7c;
  font-weight: 600;
  margin-bottom: 1rem;
}

blockquote {
  font-style: italic;
  color: #4a4a4a;
  margin: 1rem 0;
  font-size: 0.95rem;
  line-height: 1.6;
}

.copy-note {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: #999;
}

.production-plan {
  max-width: 800px;
  margin: 0 auto;
}

.timeline {
  margin-top: 2rem;
}

.timeline-item {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid #ddd;
}

.timeline-item:last-child {
  border-bottom: none;
}

.timeline-marker {
  background: #2c5f7c;
  color: #fff;
  padding: 0.5rem 1rem;
  border-radius: 3px;
  font-weight: 600;
  font-size: 0.9rem;
  text-align: center;
  height: fit-content;
}

.timeline-content h4 {
  margin-bottom: 0.5rem;
}

.timeline-content p {
  color: #666;
  font-size: 0.95rem;
}

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  h2 { font-size: 2rem; }
  
  .hero .container,
  .split,
  .grid-2,
  .grid-3,
  .segment-grid,
  .metrics-grid,
  .format-block,
  .copy-examples,
  .timeline-item {
    grid-template-columns: 1fr;
  }
  
  .nav-links {
    gap: 1rem;
  }
  
  .stat-row {
    grid-template-columns: 1fr;
  }
}