:root {
  --page-ink: #172033;
  --page-muted: #5b6475;
  --page-line: #dfe4ed;
  --page-blue: #17aee2;
  --page-orange: #f49b16;
}

.seo-page {
  background: #f6f8fb;
}

.seo-main {
  width: min(1180px, calc(100% - 36px));
  margin: 0 auto;
  padding: 72px 0 96px;
}

.seo-breadcrumb {
  margin-bottom: 22px;
  color: var(--page-muted);
  font-size: 14px;
}

.seo-breadcrumb a {
  color: var(--page-blue);
  font-weight: 700;
}

.seo-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(280px, .95fr);
  gap: 46px;
  align-items: center;
  padding: clamp(28px, 5vw, 64px);
  border-radius: 8px;
  color: #fff;
  background: #172033;
}

.seo-hero h1 {
  max-width: 720px;
  margin: 0;
  font-size: clamp(38px, 6vw, 72px);
  line-height: 1.02;
}

.seo-hero p {
  max-width: 660px;
  margin: 20px 0 0;
  color: rgba(255, 255, 255, .82);
  font-size: 19px;
  line-height: 1.6;
}

.seo-hero img {
  width: 100%;
  aspect-ratio: 1.25;
  object-fit: cover;
  border-radius: 8px;
}

.seo-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.seo-actions a {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 18px;
  border-radius: 6px;
  color: #fff;
  background: var(--page-blue);
  font-weight: 800;
}

.seo-actions a.alt {
  border: 1px solid rgba(255, 255, 255, .4);
  background: transparent;
}

.seo-section {
  margin-top: 22px;
  padding: clamp(26px, 4vw, 46px);
  border: 1px solid var(--page-line);
  border-radius: 8px;
  background: #fff;
}

.seo-section h2 {
  margin-bottom: 18px;
  font-size: clamp(28px, 4vw, 46px);
}

.seo-section h3 {
  margin: 0 0 8px;
  font-size: 20px;
}

.seo-section p,
.seo-section li {
  color: var(--page-muted);
  font-size: 17px;
  line-height: 1.65;
}

.seo-section ul {
  display: grid;
  gap: 10px;
  margin: 0;
  padding-left: 22px;
}

.seo-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.seo-grid article {
  padding: 20px;
  border: 1px solid var(--page-line);
  border-radius: 8px;
  background: #fbfcfe;
}

.seo-grid p {
  margin: 0;
  font-size: 15px;
}

.seo-zh {
  border-left: 4px solid var(--page-orange);
}

.seo-zh h2 {
  font-size: 30px;
}

.seo-cta {
  color: #fff;
  background: var(--page-blue);
}

.seo-cta p {
  color: rgba(255, 255, 255, .88);
}

.seo-cta a {
  color: var(--page-ink);
  background: #fff;
}

@media (max-width: 820px) {
  .seo-main { padding: 42px 0 64px; }
  .seo-hero { grid-template-columns: 1fr; }
  .seo-grid { grid-template-columns: 1fr; }
}