/* =========================================================
   Department + Subdepartment hub pages
   ========================================================= */

/* ---------- Department hero ---------- */
.dep-hero {
  background:
    radial-gradient(80% 100% at 100% 0%, rgba(240,122,26,0.12) 0%, transparent 60%),
    var(--bg-elev);
  border-bottom: 1px solid var(--border);
  padding: 56px 0 64px;
}
.dep-hero-grid {
  display: grid; grid-template-columns: 1.4fr 1fr; gap: 56px; align-items: center;
}
.dep-eyebrow {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 14px;
}
.dep-h1 {
  font-family: var(--f-serif); font-weight: 400; font-style: italic;
  font-size: 88px; line-height: 0.95; letter-spacing: -0.02em;
  margin: 0 0 18px;
}
.dep-lead {
  font-size: 18px; line-height: 1.6; color: var(--ink-2);
  max-width: 580px; margin: 0 0 28px;
}
.dep-hero-stats {
  display: flex; gap: 36px; padding-top: 22px;
  border-top: 1px solid var(--border);
}
.dep-hero-stats > div { display: flex; flex-direction: column; gap: 4px; }
.dep-hero-stats .n {
  font-family: var(--f-serif); font-size: 36px; line-height: 1;
  letter-spacing: -0.02em;
}
.dep-hero-stats .l {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
}

.dep-hero-visual {
  display: grid; grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr; gap: 10px;
  height: 360px;
}
.dep-hero-tile {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 22px;
  display: flex; flex-direction: column; gap: 8px; justify-content: space-between;
  position: relative;
}
.dep-hero-tile.big {
  grid-row: span 2;
  background: linear-gradient(135deg, var(--brand-blue) 0%, var(--brand-blue-dark) 100%);
  color: #fff; border-color: var(--brand-blue-dark);
}
.dep-hero-tile.big h3 {
  font-family: var(--f-serif); font-weight: 400; font-style: italic;
  font-size: 32px; line-height: 1.05; letter-spacing: -0.01em; margin: 6px 0 0;
}
.dep-hero-tile.big .dep-hero-tag {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: rgba(255,255,255,0.7);
  margin-top: 4px;
}
.dep-hero-tile.big .btn.primary { background: #fff; color: var(--ink); }
.dep-hero-tile.big .btn.primary:hover { background: var(--accent); color: #fff; }
a.dep-hero-tile { text-decoration: none; color: inherit; cursor: pointer; }
a.dep-hero-tile:hover { border-color: var(--accent); background: var(--surface-hover, var(--surface)); }
a.dep-hero-tile:hover .dep-hero-arrow { opacity: 1; transform: translateX(0); }
.dep-hero-tile h4 {
  font-family: var(--f-serif); font-weight: 400; font-size: 24px;
  letter-spacing: -0.01em; margin: 4px 0;
}
.dep-hero-tile p { font-size: 13px; color: var(--muted); margin: 0; }
.dep-hero-arrow {
  align-self: flex-end; opacity: 0.45; color: var(--accent);
  transform: translateX(-4px); transition: opacity .18s, transform .18s;
}

/* ---------- Subdepartments grid (Department page) ---------- */
.dep-sub-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.dep-sub {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 24px;
  cursor: pointer; text-align: left; font: inherit; color: inherit;
  display: flex; flex-direction: column; gap: 14px;
  transition: border-color .15s, transform .12s;
  position: relative; overflow: hidden;
}
.dep-sub:hover { border-color: var(--ink); transform: translateY(-2px); }
.dep-sub.featured {
  grid-column: span 1;
  background: linear-gradient(180deg, var(--surface) 0%, var(--bg-elev) 60%);
}
.dep-sub.featured::before {
  content: ""; position: absolute; top: 0; left: 0; right: 0; height: 3px;
  background: var(--accent);
}
.dep-sub[data-accent="blue"]::before { background: var(--brand-blue); }
.dep-sub[data-accent="purple"]::before { background: oklch(60% 0.19 300); }
.dep-sub[data-accent="green"]::before { background: var(--success); }
.dep-sub[data-accent="ink"]::before { background: var(--ink); }
.dep-sub[data-accent="red"]::before { background: var(--danger); }

.dep-sub-head {
  display: grid; grid-template-columns: auto 1fr auto; gap: 14px;
  align-items: center;
}
.dep-sub-ico {
  width: 56px; height: 56px; border-radius: 12px;
  background: var(--surface); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--accent-ink);
  flex-shrink: 0;
}
.dep-sub.featured .dep-sub-ico { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.dep-sub[data-accent="blue"] .dep-sub-ico { background: #DEE8F5; border-color: var(--brand-blue); color: var(--brand-blue); }
.dep-sub-name {
  font-family: var(--f-serif); font-weight: 400; font-size: 24px;
  letter-spacing: -0.01em; line-height: 1.1;
}
.dep-sub-count {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted); margin-top: 4px;
}
.dep-sub-arrow {
  width: 32px; height: 32px; border-radius: 50%;
  border: 1px solid var(--border); display: grid; place-items: center;
  color: var(--ink); transition: background .15s, color .15s;
}
.dep-sub:hover .dep-sub-arrow { background: var(--ink); color: #fff; }
.dep-sub-teaser { font-size: 13.5px; color: var(--ink-2); line-height: 1.55; margin: 0; }
.dep-sub-cats {
  display: flex; flex-wrap: wrap; gap: 6px;
  padding-top: 14px; border-top: 1px dashed var(--hairline);
}
.dep-sub-cat {
  font-size: 12px; padding: 4px 10px;
  background: var(--surface); border-radius: 6px;
  color: var(--ink-2); font-weight: 500;
}
.dep-sub-cat.more {
  background: transparent; color: var(--accent-ink); font-weight: 700;
}

/* ---------- Use cases (Dept + Sub share) ---------- */
.dep-usecases,
.sub-usecases {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px;
}
.dep-usecase,
.sub-usecase {
  display: grid; grid-template-columns: auto 1fr auto; gap: 14px; align-items: center;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 22px;
  cursor: pointer; font: inherit; color: inherit; text-align: left;
  transition: border-color .15s, transform .12s;
}
.dep-usecase:hover,
.sub-usecase:hover { border-color: var(--ink); transform: translateY(-2px); }
.dep-usecase-ico,
.sub-usecase-ico {
  width: 40px; height: 40px; border-radius: 10px;
  background: var(--accent-soft); color: var(--accent-ink);
  display: grid; place-items: center;
}
.dep-usecase-l,
.sub-usecase-l { font-weight: 700; font-size: 14px; }
.dep-usecase-c,
.sub-usecase-c { font-size: 12.5px; color: var(--muted); line-height: 1.5; margin-top: 2px; }

/* ---------- Brands (Department page) ---------- */
.dep-brands {
  display: grid; grid-template-columns: 1fr 1.4fr; gap: 36px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 36px;
}
.dep-brands-meta h3 {
  font-family: var(--f-serif); font-weight: 400; font-size: 32px;
  letter-spacing: -0.01em; margin: 6px 0 10px;
}
.dep-brands-meta h3 em { font-style: italic; color: var(--accent-ink); }
.dep-brands-meta p { color: var(--ink-2); margin: 0; }
.dep-brands-list {
  display: flex; flex-wrap: wrap; gap: 8px; align-content: flex-start;
}
.dep-brand-chip {
  padding: 8px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-weight: 700; font-size: 13px; background: var(--surface);
}
.dep-brand-chip.more { background: transparent; color: var(--muted); font-weight: 500; }

/* ---------- Buying guides ---------- */
.dep-guides {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px;
}
.dep-guide {
  display: block; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 24px; cursor: pointer;
  transition: border-color .15s, transform .12s;
}
.dep-guide:hover { border-color: var(--ink); transform: translateY(-2px); }
.dep-guide-cat {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--accent-ink); margin-bottom: 10px;
}
.dep-guide h4 {
  font-family: var(--f-serif); font-weight: 400; font-size: 22px;
  line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 14px;
}
.dep-guide-meta {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
}

/* =========================================================
   SUBDEPARTMENT PAGE
   ========================================================= */

.sub-hero {
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
  padding: 40px 0 44px;
}
.sub-hero-row {
  display: grid; grid-template-columns: 1.6fr 1fr; gap: 36px; align-items: flex-end;
}
.sub-eyebrow {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--muted); margin-bottom: 10px;
}
.sub-h1 {
  font-family: var(--f-serif); font-weight: 400; font-style: italic;
  font-size: 56px; line-height: 1; letter-spacing: -0.02em; margin: 0 0 12px;
}
.sub-lead { font-size: 15.5px; line-height: 1.6; color: var(--ink-2); max-width: 600px; margin: 0; }
.sub-stats { display: flex; gap: 24px; }
.sub-stats > div {
  background: var(--surface); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 18px;
  display: flex; flex-direction: column; gap: 4px; min-width: 100px;
}
.sub-stats .n { font-size: 22px; font-weight: 800; letter-spacing: -0.01em; }
.sub-stats .l {
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.08em;
  text-transform: uppercase; color: var(--muted);
}

/* Groups & categories */
.sub-groups { display: flex; flex-direction: column; gap: 18px; }
.sub-group {
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 28px;
}
.sub-group.featured {
  border-color: var(--accent);
  background: linear-gradient(180deg, var(--accent-soft) 0%, var(--bg-elev) 30%);
}
.sub-group-head {
  display: flex; justify-content: space-between; align-items: center;
  gap: 18px; flex-wrap: wrap; margin-bottom: 18px;
  padding-bottom: 16px; border-bottom: 1px solid var(--hairline);
}
.sub-group-meta {
  display: flex; align-items: center; gap: 14px;
}
.sub-group-ico {
  width: 44px; height: 44px; border-radius: 10px;
  background: var(--surface); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--accent-ink);
}
.sub-group.featured .sub-group-ico { background: var(--accent); border-color: var(--accent); color: #fff; }
.sub-group-name {
  font-family: var(--f-serif); font-weight: 400; font-size: 26px;
  letter-spacing: -0.01em; margin: 0; line-height: 1.1;
}
.sub-group-teaser { font-size: 12.5px; color: var(--muted); margin-top: 2px; }
.sub-group-link {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 13px; font-weight: 700; color: var(--accent-ink);
  padding: 8px 14px; border: 1px solid var(--border-strong);
  border-radius: 999px; background: var(--bg-elev); cursor: pointer;
  transition: border-color .15s, color .15s;
}
.sub-group-link:hover { border-color: var(--accent); }

.sub-cat-grid {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px;
}
.sub-cat {
  display: grid; grid-template-columns: auto 1fr auto; gap: 12px; align-items: center;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: 10px; padding: 14px 16px;
  cursor: pointer; font: inherit; color: inherit; text-align: left;
  transition: border-color .15s, transform .12s, background .15s;
}
.sub-cat:hover { border-color: var(--ink); transform: translateY(-1px); background: var(--surface); }
.sub-cat-ico {
  width: 34px; height: 34px; border-radius: 8px;
  background: var(--surface); border: 1px solid var(--border);
  display: grid; place-items: center; color: var(--ink);
}
.sub-cat.hot .sub-cat-ico,
.sub-cat:has(.sub-cat-hot) .sub-cat-ico { background: var(--accent-soft); border-color: var(--accent); color: var(--accent-ink); }
.sub-cat-body { min-width: 0; }
.sub-cat-name {
  font-size: 14px; font-weight: 600;
  display: inline-flex; align-items: center; gap: 8px; flex-wrap: wrap;
}
.sub-cat-count {
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.06em;
  color: var(--muted); margin-top: 2px;
}
.sub-cat-hot {
  font-family: var(--f-mono); font-size: 9.5px; letter-spacing: 0.08em;
  padding: 2px 6px; background: var(--accent); color: #fff;
  border-radius: 4px; font-weight: 700;
}
.sub-cat-tag {
  font-family: var(--f-mono); font-size: 9.5px; letter-spacing: 0.06em;
  padding: 2px 6px; background: var(--surface); border: 1px solid var(--border-strong);
  border-radius: 4px; font-weight: 600; color: var(--ink-2); text-transform: uppercase;
}

/* Brand strip (sub) */
.sub-brands {
  display: flex; align-items: center; flex-wrap: wrap; gap: 12px;
  padding: 28px 36px;
  background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg);
}
.sub-brands-l {
  font-family: var(--f-mono); font-size: 11px; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--muted); margin-right: 6px;
}
.sub-brands .brand {
  padding: 8px 14px; border: 1px solid var(--border);
  border-radius: 8px; font-weight: 700; font-size: 13px; background: var(--surface);
}
.sub-brands .brand.more {
  background: transparent; color: var(--muted); font-weight: 500;
}

/* Articles */
.sub-articles {
  display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px;
}
.sub-article {
  display: block; background: var(--bg-elev); border: 1px solid var(--border);
  border-radius: var(--r-lg); padding: 26px;
  cursor: pointer; transition: border-color .15s, transform .12s;
}
.sub-article:hover { border-color: var(--ink); transform: translateY(-2px); }
.sub-article-tag {
  display: inline-block;
  font-family: var(--f-mono); font-size: 10px; letter-spacing: 0.1em;
  padding: 3px 8px; background: var(--ink); color: #fff;
  border-radius: 4px; font-weight: 700; margin-bottom: 14px;
}
.sub-article h4 {
  font-family: var(--f-serif); font-weight: 400; font-size: 22px;
  line-height: 1.2; letter-spacing: -0.01em; margin: 0 0 14px;
}
.sub-article-meta {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--f-mono); font-size: 10.5px; letter-spacing: 0.06em;
  text-transform: uppercase; color: var(--muted);
}

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .dep-h1 { font-size: 64px; }
  .dep-hero-grid { grid-template-columns: 1fr; gap: 32px; }
  .dep-hero-visual { height: auto; }
  .dep-sub-grid { grid-template-columns: 1fr 1fr; }
  .dep-usecases, .sub-usecases { grid-template-columns: 1fr 1fr; }
  .dep-brands { grid-template-columns: 1fr; }
  .dep-guides { grid-template-columns: 1fr 1fr; }
  .sub-hero-row { grid-template-columns: 1fr; gap: 24px; }
  .sub-h1 { font-size: 40px; }
  .sub-cat-grid { grid-template-columns: 1fr 1fr; }
  .sub-articles { grid-template-columns: 1fr; }
  .dep-demo-hint { display: none; }
}
@media (max-width: 700px) {
  .dep-h1 { font-size: 44px; }
  .dep-sub-grid { grid-template-columns: 1fr; }
  .dep-usecases, .sub-usecases { grid-template-columns: 1fr; }
  .dep-guides { grid-template-columns: 1fr; }
  .sub-cat-grid { grid-template-columns: 1fr; }
  .dep-hero-visual { grid-template-columns: 1fr; }
  .dep-hero-tile.big { grid-row: span 1; }
  .dep-hero-stats { gap: 20px; flex-wrap: wrap; }
  .dep-hero-stats .n { font-size: 28px; }
  .sub-stats { flex-wrap: wrap; }
  .sub-group { padding: 20px; }
}