:root {
  color-scheme: light;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: #102a43;
  background: #f8fafc;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: #f8fafc;
}

a {
  color: inherit;
}

.seo-page {
  min-height: 100vh;
}

.seo-nav {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  max-width: 1120px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
}

.seo-brand {
  display: inline-flex;
  gap: 0.5rem;
  align-items: center;
  font-weight: 800;
  text-decoration: none;
}

.seo-nav__links {
  display: flex;
  gap: 1rem;
  align-items: center;
  color: #486581;
  font-size: 0.92rem;
}

.seo-nav__links a {
  text-decoration: none;
}

.seo-hero {
  background: linear-gradient(135deg, #103b3f 0%, #245c73 58%, #6d2e46 100%);
  color: #ffffff;
}

.seo-hero__inner {
  max-width: 1120px;
  margin: 0 auto;
  padding: 4.5rem 1.25rem 5rem;
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(280px, 0.85fr);
  gap: 3rem;
  align-items: center;
}

.seo-kicker {
  display: inline-flex;
  width: fit-content;
  padding: 0.4rem 0.72rem;
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  font-weight: 700;
  font-size: 0.86rem;
}

.seo-hero h1 {
  margin: 1.25rem 0 1rem;
  font-size: 4rem;
  line-height: 1.05;
  letter-spacing: 0;
}

.seo-lead {
  margin: 0;
  max-width: 680px;
  color: rgba(255, 255, 255, 0.88);
  font-size: 1.16rem;
  line-height: 1.75;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 2rem;
}

.seo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.8rem 1.1rem;
  border-radius: 8px;
  font-weight: 800;
  text-decoration: none;
}

.seo-btn--primary {
  background: #fbbf24;
  color: #1e293b;
}

.seo-btn--ghost {
  border: 1px solid rgba(255, 255, 255, 0.34);
  color: #ffffff;
}

.seo-demo {
  background: #ffffff;
  color: #102a43;
  border-radius: 8px;
  padding: 1.25rem;
  box-shadow: 0 24px 56px rgba(15, 23, 42, 0.28);
}

.seo-demo__label {
  margin: 0 0 0.5rem;
  color: #627d98;
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
}

.seo-demo__question {
  margin: 0 0 1rem;
  padding: 1rem;
  border: 1px solid #d9e2ec;
  border-radius: 8px;
  background: #f8fafc;
  line-height: 1.55;
}

.seo-demo__list {
  margin: 0;
  padding-left: 1.1rem;
  color: #334e68;
  line-height: 1.7;
}

.seo-section {
  max-width: 1120px;
  margin: 0 auto;
  padding: 4rem 1.25rem;
}

.seo-section h2 {
  margin: 0 0 1rem;
  font-size: 2.5rem;
  line-height: 1.15;
}

.seo-section__intro {
  max-width: 760px;
  margin: 0 0 2rem;
  color: #486581;
  line-height: 1.7;
  font-size: 1.05rem;
}

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

.seo-card {
  background: #ffffff;
  border: 1px solid #d9e2ec;
  border-radius: 8px;
  padding: 1.4rem;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.05);
}

.seo-card h3 {
  margin: 0 0 0.65rem;
  font-size: 1.1rem;
}

.seo-card p {
  margin: 0;
  color: #486581;
  line-height: 1.65;
}

.seo-band {
  background: #ffffff;
  border-top: 1px solid #d9e2ec;
  border-bottom: 1px solid #d9e2ec;
}

.seo-list {
  margin: 0;
  padding-left: 1.2rem;
  color: #334e68;
  line-height: 1.8;
}

.seo-footer {
  background: #102a43;
  color: rgba(255, 255, 255, 0.74);
  padding: 2rem 1.25rem;
}

.seo-footer__inner {
  max-width: 1120px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}

.seo-footer a {
  color: #ffffff;
}

@media (max-width: 860px) {
  .seo-hero__inner,
  .seo-grid {
    grid-template-columns: 1fr;
  }

  .seo-hero h1 {
    font-size: 2.6rem;
  }

  .seo-section h2 {
    font-size: 2rem;
  }

  .seo-nav {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 520px) {
  .seo-hero h1 {
    font-size: 2.15rem;
  }

  .seo-section h2 {
    font-size: 1.75rem;
  }
}