.nd-catdir {
  background: var(--nd-bg);
  border-bottom: 1px solid var(--nd-border);
}

.nd-catdir-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 88px 32px;
}

.nd-catdir-head {
  max-width: 620px;
  margin-bottom: 44px;
}

.nd-catdir-head .nd-catdir-eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 1.6px;
  text-transform: uppercase;
  color: var(--nd-accent);
}

.nd-catdir-head .nd-catdir-title {
  margin: 0 0 14px;
  font-size: 38px;
  font-weight: 600;
  line-height: 1.14;
  letter-spacing: -0.5px;
  color: var(--nd-text);
}

.nd-catdir-head .nd-catdir-intro {
  margin: 0;
  font-size: 17px;
  font-weight: 400;
  line-height: 1.65;
  color: var(--nd-muted);
}

.nd-catdir-body {
  display: grid;
  grid-template-columns: 272px minmax(0, 1fr);
  gap: 44px;
  align-items: start;
}

.nd-catdir--nosidebar .nd-catdir-body {
  grid-template-columns: minmax(0, 1fr);
}

.nd-catdir--nosidebar .nd-catnav { display: none; }

.nd-catnav {
  min-width: 0;
  position: sticky;
  top: 96px;
}

.nd-catnav-inner {
  padding: 22px 20px;
  background: var(--nd-bg-raised);
  border: 1px solid var(--nd-border);
  border-radius: 12px;
}

.nd-catnav-count {
  margin: 0 0 16px;
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--nd-muted);
}

.nd-catnav-search {
  position: relative;
  display: flex;
  align-items: center;
  margin-bottom: 16px;
}

.nd-catnav-search-icon {
  position: absolute;
  left: 11px;
  width: 15px;
  height: 15px;
  color: var(--nd-muted);
  pointer-events: none;
}

.nd-catnav-input {
  width: 100%;
  height: 40px;
  padding: 0 12px 0 34px;
  font-size: 13px;
  line-height: 40px;
  color: var(--nd-text);
  background: var(--nd-bg);
  border: 1px solid var(--nd-border);
  border-radius: 6px;
  outline: none;
  transition: border-color 160ms ease;
  -webkit-appearance: none;
  appearance: none;
}

.nd-catnav-input::placeholder { color: var(--nd-muted); }
.nd-catnav-input:focus { border-color: var(--nd-accent); }
.nd-catnav-input::-webkit-search-cancel-button { display: none; }

.nd-catnav-list,
.nd-catnav-sub {
  margin: 0;
  padding: 0;
  list-style: none;
}

.nd-catnav-item.is-hidden { display: none; }

.nd-catnav-row {
  display: flex;
  align-items: stretch;
  gap: 2px;
  border-radius: 6px;
  transition: background 160ms ease;
}

.nd-catnav-row:hover { background: var(--nd-bg); }

.nd-catnav-link {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  column-gap: 10px;
  flex: 1;
  min-width: 0;
  padding: 9px 10px;
  text-decoration: none;
}

.nd-catnav-name {
  font-size: 14px;
  font-weight: 400;
  line-height: 1.4;
  color: var(--nd-muted);
  transition: color 160ms ease;
  overflow-wrap: break-word;
  min-width: 0;
}

.nd-catnav-link:hover .nd-catnav-name { color: var(--nd-text); }

.nd-catnav-num {
  flex-shrink: 0;
  padding-top: 1px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3px;
  color: var(--nd-muted);
  font-variant-numeric: tabular-nums;
  text-align: right;
  min-width: 18px;
}

.nd-catnav-item.is-active > .nd-catnav-row {
  background: var(--nd-bg);
}

.nd-catnav-item.is-active > .nd-catnav-row .nd-catnav-name {
  color: var(--nd-accent);
  font-weight: 500;
}

.nd-catnav-item.is-active > .nd-catnav-row .nd-catnav-num { color: var(--nd-accent); }

.nd-catnav-toggle {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  padding: 0;
  color: var(--nd-muted);
  background: transparent;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: color 160ms ease;
}

.nd-catnav-toggle-spacer {
  width: 30px;
  flex-shrink: 0;
}

.nd-catnav-toggle:hover { color: var(--nd-accent); }

.nd-catnav-toggle svg {
  width: 15px;
  height: 15px;
  transition: transform 200ms ease;
}

.nd-catnav-item.is-open > .nd-catnav-row .nd-catnav-toggle svg {
  transform: rotate(180deg);
}

.nd-catnav-sub {
  margin: 2px 0 4px 12px;
  padding-left: 10px;
  border-left: 1px solid var(--nd-border);
}

.nd-catnav-sub .nd-catnav-name { font-size: 13px; }

.nd-catnav-sub .nd-catnav-link { padding: 7px 10px; }

.nd-catnav-noresult,
.nd-catnav-empty {
  margin: 14px 0 0;
  padding: 0 10px;
  font-size: 13px;
  line-height: 1.55;
  color: var(--nd-muted);
}

.nd-catdir-main { min-width: 0; }

.nd-catdir-group { margin-bottom: 44px; }

.nd-catdir-group:last-child { margin-bottom: 0; }

.nd-catdir-group-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--nd-border);
}

.nd-catdir-group-title {
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 1.4px;
  text-transform: uppercase;
  color: var(--nd-accent);
  text-decoration: none;
  transition: opacity 160ms ease;
}

.nd-catdir-group-title:hover { opacity: 0.8; }

.nd-catdir-group-count {
  flex-shrink: 0;
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.3px;
  color: var(--nd-muted);
}

.nd-catdir-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.nd-catdir-card {
  position: relative;
  display: flex;
  flex-direction: column;
  min-width: 0;
  padding: 22px 24px 20px;
  background: var(--nd-bg-raised);
  border: 1px solid var(--nd-border);
  border-radius: 12px;
  text-decoration: none;
  transition: border-color 200ms ease, transform 200ms ease;
}

.nd-catdir-card:hover {
  border-color: var(--nd-accent);
  transform: translateY(-3px);
}

.nd-catdir-card--child {
  border-left: 2px solid var(--nd-border);
  border-radius: 0 12px 12px 0;
}

.nd-catdir-card--child:hover { border-left-color: var(--nd-accent); }

.nd-catdir-card-top {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.nd-catdir-card-title {
  margin: 0;
  font-size: 20px;
  font-weight: 500;
  line-height: 1.26;
  letter-spacing: -0.15px;
  color: var(--nd-text);
  overflow-wrap: break-word;
  min-width: 0;
  transition: color 160ms ease;
}

.nd-catdir-card:hover .nd-catdir-card-title { color: var(--nd-accent); }

.nd-catdir-card--empty .nd-catdir-card-title {
  color: var(--nd-muted);
}

.nd-catdir-card--empty:hover .nd-catdir-card-title {
  color: var(--nd-text);
}

.nd-catdir-card-count {
  flex-shrink: 0;
  padding: 3px 10px;
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.3px;
  color: var(--nd-muted);
  border: 1px solid var(--nd-border);
  border-radius: 11px;
}

.nd-catdir-card-desc {
  margin: 0 0 20px;
  font-size: 15px;
  font-weight: 400;
  line-height: 1.62;
  color: var(--nd-muted);
}

.nd-catdir-card-foot {
  display: flex;
  flex-direction: column;
  gap: 5px;
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--nd-border);
}

.nd-catdir-card-label {
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  color: var(--nd-muted);
}

.nd-catdir-card-latest {
  font-size: 13px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--nd-text);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.nd-catdir-card--nodesc .nd-catdir-card-top { margin-bottom: 20px; }

.nd-catdir-empty {
  margin: 0;
  padding: 64px 0;
  text-align: center;
  font-size: 15px;
  color: var(--nd-muted);
}

@media (max-width: 1080px) {
  .nd-catdir-inner { padding: 76px 24px; }
  .nd-catdir-head .nd-catdir-title { font-size: 34px; letter-spacing: -0.4px; }
  .nd-catdir-body { grid-template-columns: 240px minmax(0, 1fr); gap: 32px; }
}

@media (max-width: 900px) {
  .nd-catdir-body { grid-template-columns: minmax(0, 1fr); gap: 32px; }
  .nd-catnav { position: static; }
  .nd-catnav-inner { padding: 20px 18px; }
}

@media (max-width: 640px) {
  .nd-catdir-inner { padding: 56px 16px; }
  .nd-catdir-head { margin-bottom: 32px; }
  .nd-catdir-head .nd-catdir-eyebrow { margin-bottom: 12px; font-size: 11px; letter-spacing: 1.4px; }
  .nd-catdir-head .nd-catdir-title { font-size: 28px; letter-spacing: -0.3px; }
  .nd-catdir-head .nd-catdir-intro { font-size: 15px; }
  .nd-catdir-grid { grid-template-columns: minmax(0, 1fr); gap: 12px; }
  .nd-catdir-group { margin-bottom: 32px; }
  .nd-catdir-card { padding: 20px 18px 18px; }
  .nd-catdir-card-title { font-size: 18px; }
}