/* Mobile-friendly main navigation */
.mobile-menu-toggle {
  display: none;
  align-items: center;
  gap: .55rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: .58rem .78rem;
  color: var(--text);
  background: rgba(255,255,255,.055);
  cursor: pointer;
  font-weight: 850;
  letter-spacing: .02em;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.06);
}

.hamburger {
  display: grid;
  gap: 4px;
  width: 18px;
}

.hamburger i {
  display: block;
  height: 2px;
  width: 100%;
  border-radius: 999px;
  background: currentColor;
  transition: transform .2s ease, opacity .2s ease;
}

.topbar.nav-open .hamburger i:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.topbar.nav-open .hamburger i:nth-child(2) { opacity: 0; }
.topbar.nav-open .hamburger i:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 900px) {
  .topbar {
    position: sticky;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: .75rem;
    padding: .72rem clamp(.85rem, 3vw, 1.2rem);
  }

  .brand { min-width: 0; gap: .62rem; }
  .brand-mark { width: 2.55rem; height: 2.55rem; border-radius: .85rem; flex: 0 0 auto; }
  .brand span:last-child { min-width: 0; }
  .brand strong { font-size: .95rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
  .brand em { display: none; }

  .mobile-menu-toggle { display: inline-flex; justify-self: end; }

  .nav-links {
    grid-column: 1 / -1;
    order: initial !important;
    width: 100% !important;
    display: none;
    flex-direction: column;
    align-items: stretch;
    justify-content: flex-start;
    gap: .45rem;
    max-height: calc(100dvh - 86px);
    overflow: auto;
    padding: .65rem;
    border-radius: 22px;
    background:
      linear-gradient(180deg, rgba(17,19,34,.98), rgba(9,10,18,.98)),
      radial-gradient(circle at 12% 0%, rgba(255,189,89,.14), transparent 12rem);
    box-shadow: 0 22px 60px rgba(0,0,0,.42), inset 0 1px 0 rgba(255,255,255,.07);
  }

  .topbar.nav-open .nav-links { display: flex; }

  .nav-links a,
  .nav-links button.nav-action {
    width: 100%;
    box-sizing: border-box;
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 46px;
    padding: .78rem .92rem;
    border-radius: 16px;
    color: var(--text);
    background: rgba(255,255,255,.055);
    border: 1px solid rgba(255,255,255,.08);
    font-size: .96rem;
    font-weight: 850;
    text-align: left;
  }

  .nav-links a::after,
  .nav-links button.nav-action::after {
    content: "›";
    color: var(--accent);
    font-size: 1.25rem;
    line-height: 1;
  }

  .nav-links a:hover,
  .nav-links button.nav-action:hover,
  .nav-links a:focus-visible,
  .nav-links button.nav-action:focus-visible {
    background: rgba(255,189,89,.12);
    border-color: rgba(255,189,89,.28);
    outline: none;
  }
}

@media (max-width: 420px) {
  .topbar { padding-inline: .65rem; }
  .brand strong { max-width: 54vw; }
  .menu-label { display: none; }
  .mobile-menu-toggle { padding: .65rem .72rem; }
}


/* SEO content block: visible, compact, and crawlable. */
.seo-indexable {
  margin-top: 1.25rem;
  padding: 1.25rem;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(255,255,255,.055), rgba(255,255,255,.025));
  color: var(--muted);
}

.seo-indexable h2 {
  margin: 0 0 .65rem;
  color: var(--text);
  font-size: clamp(1.35rem, 2.4vw, 2.1rem);
  letter-spacing: -.05em;
}

.seo-indexable p {
  max-width: 980px;
  margin: .55rem 0;
  line-height: 1.65;
}

.seo-keyword-links {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  margin-top: .9rem;
}

.seo-keyword-links a {
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.055);
  border-radius: 999px;
  padding: .48rem .7rem;
  font-weight: 800;
  font-size: .82rem;
}


.seo-intro {
  margin-top: .75rem;
}

.seo-intro h1 {
  margin: 0 0 .7rem;
  color: var(--text);
  font-size: clamp(1.9rem, 4vw, 3.2rem);
  line-height: .95;
  letter-spacing: -.07em;
}

.seo-topic-grid,
.seo-search-panels {
  display: grid;
  gap: .75rem;
  margin-top: 1rem;
}

.seo-topic-grid {
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
}

.seo-topic-grid a {
  display: flex;
  align-items: center;
  min-height: 50px;
  color: var(--text);
  text-decoration: none;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: .72rem .85rem;
  background: rgba(255,255,255,.055);
  font-weight: 850;
}

.seo-topic-grid a:hover,
.seo-keyword-links a:hover {
  border-color: rgba(105,168,255,.42);
  background: rgba(105,168,255,.12);
}

.seo-search-panels {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.seo-search-panels article {
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: .9rem;
  background: rgba(255,255,255,.04);
}

.seo-search-panels h3 {
  margin: 0 0 .45rem;
  color: var(--text);
  font-size: 1rem;
  letter-spacing: -.02em;
}

.seo-search-panels p {
  margin: 0;
  line-height: 1.55;
}

.seo-indexable strong,
.seo-indexable em {
  color: var(--text);
}