.seo-landing-page {
  min-height: 100vh;
  background: var(--bg-dark);
}

.seo-shell {
  width: min(1120px, calc(100% - 56px));
  margin: 0 auto;
}

.seo-landing-page > header {
  padding-top: env(safe-area-inset-top);
  border-bottom: 1px solid var(--border);
}

.seo-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 76px;
}

.seo-nav nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.seo-nav nav a {
  color: var(--text-muted);
  font-size: 0.85rem;
  text-decoration: none;
}

.seo-nav nav a:hover {
  color: var(--text-main);
}

.seo-nav .seo-nav-cta {
  padding: 10px 16px;
  border-radius: 999px;
  background: var(--primary);
  color: var(--on-primary);
}

.seo-nav .seo-nav-cta:hover {
  color: var(--on-primary);
}

.seo-hero {
  max-width: 760px;
  padding: 112px 0 88px;
}

.seo-hero h1 {
  margin: 18px 0 22px;
  color: var(--text-main);
  font: 400 clamp(3rem, 7vw, 5.8rem)/0.98 var(--font-display);
  letter-spacing: -0.04em;
}

.seo-hero > p {
  max-width: 650px;
  color: var(--text-muted);
  font-size: 1.08rem;
  line-height: 1.7;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 32px;
}

.seo-primary,
.seo-secondary {
  display: inline-flex;
  align-items: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 999px;
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
}

.seo-primary {
  background: var(--primary);
  color: #fffaf1;
}

.seo-secondary {
  border: 1px solid var(--border-hover);
  color: var(--text-main);
}

.seo-content {
  display: grid;
  gap: 0;
  border-top: 1px solid var(--border);
}

.seo-content article {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 28px;
  padding: 38px 0;
  border-bottom: 1px solid var(--border);
}

.seo-index {
  color: var(--primary-ink);
  font: 500 0.72rem var(--font-mono);
  letter-spacing: 0.12em;
}

.seo-content h2 {
  margin: 0 0 10px;
  color: var(--text-main);
  font: 400 2rem/1.05 var(--font-display);
}

.seo-content p {
  max-width: 680px;
  margin: 0;
  color: var(--text-muted);
  line-height: 1.7;
}

.seo-related {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 30px;
  padding: 82px 0;
}

.seo-related h2 {
  margin: 12px 0 0;
  color: var(--text-main);
  font: 400 2.4rem/1 var(--font-display);
}

.seo-related-links {
  display: grid;
  min-width: 280px;
}

.seo-related-links a {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  padding: 13px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-main);
  text-decoration: none;
}

.seo-related-links a span {
  color: var(--primary-ink);
}

.seo-footer a {
  color: var(--text-main);
}

.seo-footer {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  padding: 24px 0 36px;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.8rem;
}

@media (max-width: 768px) {
  .seo-shell {
    width: min(100% - 32px, 620px);
  }

  .seo-nav {
    min-height: 66px;
  }

  .seo-nav nav {
    gap: 12px;
  }

  .seo-nav nav a {
    font-size: 0.74rem;
  }

  .seo-nav .seo-nav-cta {
    padding: 9px 12px;
  }

  .seo-hero {
    padding: 72px 0 58px;
  }

  .seo-hero h1 {
    color: var(--mobile-ink);
    font-size: clamp(2.7rem, 13vw, 4.2rem);
  }

  .seo-hero > p,
  .seo-content p,
  .seo-footer {
    color: var(--mobile-muted);
  }

  .seo-content article {
    grid-template-columns: 42px 1fr;
    gap: 10px;
    padding: 28px 0;
  }

  .seo-content h2,
  .seo-related h2 {
    color: var(--mobile-ink);
  }

  .seo-content h2 {
    font-size: 1.7rem;
  }

  .seo-related {
    display: block;
    padding: 58px 0;
  }

  .seo-related-links {
    min-width: 0;
    margin-top: 24px;
  }

  .seo-footer {
    display: block;
  }

  .seo-footer > span {
    display: block;
    margin-top: 10px;
  }
}