* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  color: #172033;
  background: #f7f9fc;
  line-height: 1.6;
}

a {
  color: #1d4ed8;
}

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

.seo-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  max-width: 1120px;
  margin: 0 auto;
  padding: 18px 20px;
}

.seo-brand {
  color: #172033;
  font-weight: 800;
  text-decoration: none;
}

.seo-nav-links {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  font-size: 14px;
}

.seo-hero {
  background: #172033;
  color: #fff;
}

.seo-hero-inner,
.seo-content {
  max-width: 1120px;
  margin: 0 auto;
  padding: 56px 20px;
}

.seo-hero h1 {
  max-width: 780px;
  margin: 0 0 18px;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 1.05;
}

.seo-hero p {
  max-width: 720px;
  margin: 0 0 28px;
  color: #dbeafe;
  font-size: 18px;
}

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

.seo-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 10px 16px;
  border: 1px solid #93c5fd;
  border-radius: 8px;
  background: #2563eb;
  color: #fff;
  font-weight: 800;
  text-decoration: none;
}

.seo-button.secondary {
  background: transparent;
  color: #fff;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.seo-card {
  border: 1px solid #d8dee8;
  border-radius: 8px;
  background: #fff;
  padding: 20px;
}

.seo-card h2,
.seo-card h3 {
  margin: 0 0 8px;
  line-height: 1.25;
}

.seo-section {
  margin-top: 36px;
}

.seo-section h2 {
  margin: 0 0 12px;
  font-size: 28px;
  line-height: 1.2;
}

.seo-list {
  padding-left: 22px;
}

.seo-faq details {
  border: 1px solid #d8dee8;
  border-radius: 8px;
  background: #fff;
  padding: 14px 16px;
  margin: 10px 0;
}

.seo-faq summary {
  cursor: pointer;
  font-weight: 800;
}

.seo-footer {
  max-width: 1120px;
  margin: 0 auto;
  padding: 26px 20px 44px;
  color: #64748b;
  font-size: 13px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  border-top: 1px solid #e2e8f0;
}

.seo-footer a {
  color: #2563eb;
  text-decoration: none;
  font-weight: 700;
}

.seo-footer a:hover {
  text-decoration: underline;
}

@media (max-width: 760px) {
  .seo-nav {
    align-items: flex-start;
    flex-direction: column;
  }

  .seo-grid {
    grid-template-columns: 1fr;
  }
}