/* SEO landing pages — share site tokens, keep layout calm. */
.seo-page {
  min-height: 100vh;
  background:
    radial-gradient(1200px 600px at 10% -10%, rgba(255, 77, 109, 0.12), transparent 55%),
    radial-gradient(900px 500px at 90% 0%, rgba(255, 138, 158, 0.08), transparent 50%),
    var(--bg);
}
.seo-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-top: 22px;
  padding-bottom: 10px;
}
.seo-nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
  gap: 14px 18px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 600;
}
.seo-nav a:hover {
  color: var(--ink);
}
.seo-nav-cta {
  min-height: 36px;
  padding: 0 14px;
  font-size: 13px;
}
.seo-article {
  padding-top: 48px;
  padding-bottom: 72px;
  max-width: 760px;
}
.seo-article h1 {
  margin: 10px 0 16px;
  font-size: clamp(2rem, 4vw, 2.75rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}
.seo-lead {
  margin: 0 0 18px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.65;
}
.seo-meta {
  margin: 0 0 28px;
  color: var(--pink);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.02em;
}
.seo-bullets {
  margin: 0 0 28px;
  padding-left: 1.15rem;
  color: var(--ink);
  line-height: 1.7;
}
.seo-bullets li + li {
  margin-top: 8px;
}
.seo-facts {
  margin: 0 0 40px;
  padding-left: 1.2rem;
  color: var(--ink);
  line-height: 1.7;
}
.seo-facts li + li {
  margin-top: 12px;
}
.seo-faq {
  margin: 0 0 40px;
}
.seo-faq h2 {
  margin: 0 0 18px;
  font-size: 1.35rem;
}
.seo-faq-item {
  padding: 16px 0;
  border-top: 1px solid var(--line);
}
.seo-faq-item:last-child {
  border-bottom: 1px solid var(--line);
}
.seo-faq-item h3 {
  margin: 0 0 8px;
  font-size: 1.05rem;
  line-height: 1.4;
}
.seo-faq-item p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}
.seo-related {
  margin: 0 0 36px;
  color: var(--muted);
}
.seo-related a {
  color: var(--accent-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.seo-phrase-list {
  list-style: none;
  margin: 0 0 48px;
  padding: 0;
  border-top: 1px solid var(--line);
}
.seo-phrase {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.seo-phrase-i {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 600;
  padding-top: 4px;
}
.seo-phrase-en {
  margin: 0;
  font-size: 1.05rem;
  line-height: 1.45;
}
.seo-phrase-zh {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}
.seo-cta {
  margin: 8px 0 36px;
  padding: 28px 24px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(160deg, var(--surface) 0%, var(--surface2) 100%);
}
.seo-cta h2 {
  margin: 0 0 8px;
  font-size: 1.35rem;
}
.seo-cta p {
  margin: 0 0 18px;
  color: var(--muted);
  line-height: 1.55;
}
.seo-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  align-items: center;
}
.seo-more {
  color: var(--muted);
  font-size: 14px;
  line-height: 1.6;
}
.seo-more a {
  color: var(--accent-bright);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.seo-pack-grid {
  display: grid;
  gap: 14px;
  margin: 28px 0 40px;
}
.seo-pack-card {
  display: block;
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.seo-pack-card:hover {
  border-color: var(--accent);
  transform: translateY(-1px);
}
.seo-pack-card h2 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}
.seo-pack-card p {
  margin: 0;
  color: var(--muted);
  font-size: 0.95rem;
  line-height: 1.5;
}
.seo-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 20px;
  align-items: center;
  padding: 28px 0 40px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 13px;
}
.seo-foot a:hover {
  color: var(--ink);
}
@media (max-width: 720px) {
  .seo-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .seo-nav {
    justify-content: flex-start;
  }
  .seo-article {
    padding-top: 28px;
  }
  .seo-phrase {
    grid-template-columns: 2rem 1fr;
  }
}