.tool-nav {
  position: sticky;
  top: 0;
  z-index: 10;
  max-width: none;
  padding: 0 max(24px, calc((100vw - 1180px) / 2 + 24px));
  border-bottom: 1px solid var(--line);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: saturate(160%) blur(10px);
  -webkit-backdrop-filter: saturate(160%) blur(10px);
}

@supports not (background: color-mix(in srgb, red, blue)) {
  .tool-nav { background: var(--bg); }
}

.tool-brand { display: flex; align-items: center; gap: 10px; }

.tool-nav .brand-mark {
  width: 38px;
  height: 38px;
  margin: 0;
  border-radius: 10px;
  font-size: .74rem;
  background: linear-gradient(135deg, var(--pink), var(--blush));
  color: #fff;
}

.brand-title, .brand-subtitle { display: block; }
.brand-title { font-size: 1.05rem; letter-spacing: .04em; }
.brand-title i { font-style: normal; color: var(--pink); }
.brand-title b { color: var(--aqua-deep); }
.brand-subtitle {
  color: var(--muted);
  font-size: .7rem;
  font-weight: 500;
  letter-spacing: .03em;
}

.tool-nav nav { align-items: center; }

.tool-nav nav a {
  padding: .35rem 0;
  border-radius: 0;
  border-bottom: 2px solid transparent;
  font-size: .95rem;
  font-weight: 600;
}

.tool-nav nav a.is-active,
.tool-nav nav a:hover {
  background: transparent;
  color: var(--aqua-deep);
  border-bottom-color: var(--aqua-deep);
}

.tool-main { max-width: 1180px; }

.category-hero {
  min-height: 410px;
  max-width: 850px;
  margin: auto;
  padding-top: 80px;
  padding-bottom: 64px;
  text-align: center;
}

.category-hero .hero-logo { display: none; }

.live-badge {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 17px;
  padding: 6px 11px;
  border: 1px solid var(--aqua-soft);
  border-radius: 999px;
  background: var(--aqua-tint);
  color: var(--aqua-deep);
  font-size: .78rem;
  font-weight: 700;
}

.live-badge span {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--pink);
  box-shadow: 0 0 10px var(--pink-soft);
}

.category-hero h1 { max-width: 850px; font-size: clamp(2.4rem, 6vw, 4.2rem); }

.category-hero h1 em {
  font-style: normal;
  color: var(--pink);
}

.category-hero .hero-copy { margin: 19px auto 27px; }

.hero-actions { display: flex; justify-content: center; gap: 11px; }

.primary-action,
.secondary-action {
  display: inline-flex;
  align-items: center;
  gap: .4rem;
  padding: .7rem 1.25rem;
  border-radius: 999px;
  font-weight: 700;
  text-decoration: none;
  transition: transform .12s ease, background .12s ease, color .12s ease, border-color .12s ease;
}

.primary-action:hover,
.secondary-action:hover {
  text-decoration: none;
  transform: translateY(-1px);
}

.primary-action {
  background: linear-gradient(135deg, #4893b8 0%, #29769a 100%);
  color: #fff;
  border: 2px solid transparent;
  box-shadow: 0 4px 14px -4px rgba(35, 117, 150, .25);
}

.primary-action:hover { color: #fff; }

.secondary-action {
  border: 2px solid var(--aqua-soft);
  color: var(--text);
  background: transparent;
}

.secondary-action:hover {
  background: var(--aqua-tint);
  border-color: var(--aqua);
  color: var(--text);
}

.category-landing {
  margin: 0 24px 72px;
  padding: 42px;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.category-cards {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
  margin-top: 30px;
}

.category-card {
  display: flex;
  align-items: center;
  gap: 13px;
  min-height: 112px;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}

.category-card:hover,
.category-card:focus-visible {
  border-color: var(--aqua-soft);
  transform: translateY(-2px);
  box-shadow: 0 10px 28px -8px rgba(79, 179, 217, .28);
  outline: none;
  text-decoration: none;
  color: var(--text);
}

.category-card-icon {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: var(--pink-tint);
  color: var(--pink);
  font-size: 1.3rem;
}

.category-card strong,
.category-card small { display: block; }

.category-card small { color: var(--muted); font-size: .8rem; }

.category-card b {
  margin-left: auto;
  color: var(--pink);
  font-size: .8rem;
  white-space: nowrap;
}

.page-catalogue { margin: 42px 24px 72px; }

.back-link {
  display: inline-block;
  margin-bottom: 26px;
  color: var(--aqua-deep);
  text-decoration: none;
  font-weight: 700;
}

.page-catalogue h1 { margin: 0; font-size: 2.2rem; }

.project-dialog dd { max-width: 180px; overflow-wrap: anywhere; }

body > footer a { color: var(--link); text-decoration: none; }

.footer-name {
  color: var(--pink);
  font-weight: 800;
}

@media (max-width: 850px) {
  .category-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .tool-nav { padding: 0 16px; }
  .tool-nav nav { gap: 12px; }
  .tool-nav nav a { font-size: .86rem; }
  .tool-nav nav a:last-child { display: none; }
  .page-catalogue { margin: 16px 12px 40px; width: auto; max-width: 100%; }
  .page-catalogue.catalogue { border-radius: 0; }
}

@media (max-width: 560px) {
  .category-landing { margin: 0; padding: 24px 16px; border-radius: 0; }
  .category-cards { grid-template-columns: 1fr; }
  .page-catalogue { margin: 12px 0 40px; }
  .category-hero { min-height: auto; padding: 28px 16px 36px; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .primary-action, .secondary-action { text-align: center; justify-content: center; }
}

@media (prefers-color-scheme: dark) {
  .primary-action {
    background: linear-gradient(135deg, #4a9ec5 0%, #2b80a6 100%);
    box-shadow: 0 4px 14px -4px rgba(0, 0, 0, .4);
  }
  .secondary-action { border-color: #3b5a68; }
  .secondary-action:hover { border-color: #5fc1e4; }
}