.seo-body {
  min-height: 100%;
}
.seo-main {
  width: min(var(--rail), 100%);
  margin: 0 auto;
  padding: 2.4rem var(--gutter) 4rem;
  box-sizing: border-box;
}
.seo-hero {
  max-width: 44rem;
  margin-bottom: 2.4rem;
}
.seo-hero h1 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  letter-spacing: -0.04em;
  line-height: 1.08;
  font-weight: 800;
}
.seo-block {
  margin: 0 0 1.5rem;
  padding: 1.35rem 1.4rem 1.45rem;
  border: 1px solid var(--line);
  border-radius: 22px;
  background: rgba(12, 18, 30, 0.55);
  max-width: 52rem;
}
.seo-block h2 {
  margin: 0 0 0.65rem;
  font-family: var(--display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.seo-block p {
  margin: 0;
  color: var(--muted);
  line-height: 1.6;
}
.seo-list {
  margin: 0.85rem 0 0;
  padding-left: 1.15rem;
  color: var(--muted);
  line-height: 1.55;
}
.seo-list li { margin: 0.35rem 0; }
.seo-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}
.seo-chip {
  display: inline-flex;
  align-items: center;
  min-height: 2.2rem;
  padding: 0 0.9rem;
  border-radius: 999px;
  border: 1px solid rgba(47, 125, 255, 0.35);
  background: rgba(47, 125, 255, 0.1);
  color: #c7dbff;
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 650;
}
.seo-chip:hover { background: rgba(47, 125, 255, 0.18); }
.seo-faq {
  border-top: 1px solid var(--line);
  padding: 0.85rem 0 0.15rem;
  margin-top: 0.75rem;
}
.seo-faq:first-of-type { border-top: 0; margin-top: 0.35rem; }
.seo-faq summary {
  cursor: pointer;
  font-weight: 700;
  color: var(--ink);
}
.seo-faq p {
  margin: 0.55rem 0 0.35rem;
}
.seo-final {
  background:
    radial-gradient(520px 180px at 100% 0%, rgba(47, 125, 255, 0.18), transparent 55%),
    rgba(12, 18, 30, 0.72);
}
.seo-foot-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1rem;
}
.seo-foot-nav a {
  color: #9fc0ff;
  text-decoration: none;
  font-weight: 650;
}
.seo-foot-nav a:hover { text-decoration: underline; }

.seo-choice {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.75rem;
}
.seo-choice-card {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  padding: 1rem 1.05rem 1.1rem;
  border-radius: 16px;
  border: 1px solid var(--line);
  background: rgba(8, 12, 22, 0.55);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.15s ease, background 0.15s ease;
}
.seo-choice-card:hover {
  border-color: rgba(47, 125, 255, 0.45);
  background: rgba(47, 125, 255, 0.08);
}
.seo-choice-card strong {
  font-family: var(--display);
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}
.seo-choice-card span {
  color: var(--muted);
  font-size: 0.9rem;
  line-height: 1.45;
  flex: 1;
}
.seo-choice-card em {
  font-style: normal;
  font-size: 0.82rem;
  font-weight: 700;
  color: #9fc0ff;
}

.seo-code {
  margin: 0.85rem 0 0;
  padding: 1rem 1.1rem;
  border-radius: 14px;
  border: 1px solid rgba(47, 125, 255, 0.22);
  background: #05080f;
  overflow-x: auto;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #b8d0f5;
}
.seo-code code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  white-space: pre;
}
.seo-note {
  margin-top: 0.75rem !important;
  font-size: 0.88rem;
  opacity: 0.9;
}
.seo-trust {
  border-color: rgba(47, 125, 255, 0.22);
}

@media (max-width: 900px) {
  .seo-choice {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 720px) {
  footer {
    grid-template-columns: 1fr;
  }
  .seo-langs {
    margin-right: 0;
  }
}