.header {
  height:var(--header);
  position:fixed;
  inset:0 0 auto;
  z-index:20;
  background:var(--bg);
  border-bottom:1px solid var(--border);
  display:flex;
  align-items:center;
  gap:2rem;
  padding:0 2rem
}
.brand {
  display:flex;
  align-items:center;
  gap:.7rem;
  min-width:calc(var(--sidebar) - 2rem);
  font-size:1.3rem;
  font-weight:750;
  letter-spacing:-.05em
}
.brand small {
  display:block;
  font-size:.61rem;
  text-transform:uppercase;
  letter-spacing:.17em;
  color:var(--muted);
  font-weight:500
}
.brand img { filter:var(--brand-icon-filter); flex-shrink:0; object-fit:contain; }
.header-search {
  display:flex;
  align-items:center;
  gap:.8rem;
  max-width:620px;
  width:100%;
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:.7rem;
  color:var(--muted);
  height:42px;
  text-align:left;
  padding:0 1rem;
  font-size:.8rem
}
.search-hint {
  margin-left:auto;
  font-size:.65rem;
  color:var(--muted)
}
.header-actions {
  display:flex;
  align-items:center;
  gap:.25rem;
  margin-left:auto;
  flex-shrink:0
}
.sidebar {
  position:fixed;
  top:var(--header);
  bottom:var(--player);
  width:var(--sidebar);
  padding:2rem 1rem;
  border-right:1px solid var(--border);
  background:var(--bg);
  display:flex;
  flex-direction:column;
  overflow-y:auto
}
.nav-label {
  font-size:.6rem;
  letter-spacing:.16em;
  margin:0 1rem 1rem
}
.sidebar nav {
  display:grid;
  gap:.4rem
}
.nav-link {
  display:flex;
  align-items:center;
  gap:.9rem;
  padding:.8rem 1rem;
  border-radius:.6rem;
  color:var(--muted);
  font-size:.85rem
}
.nav-link:hover {
  background:var(--panel);
  color:var(--text)
}
.nav-link.active {
  background:var(--nav-active);
  color:var(--accent)
}
.nav-count {
  margin-left:auto;
  font-size:.7rem
}
.sidebar-note {
  margin-top:auto;
  padding:1rem;
  font-size:.75rem;
  flex-shrink:0
}
.sidebar-note p {
  font-size:.68rem;
  margin-top:.5rem
}
main {
  margin-left:var(--sidebar);
  padding:calc(var(--header) + 2rem) 2.5rem calc(var(--player) + 1.5rem);
  min-height:100vh
}
.content,footer {
  max-width:var(--content);
  margin:auto
}
.section {
  margin-top:2.5rem
}
.section-head {
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:1rem;
  margin-bottom:1.25rem
}
.section-head p {
  font-size:.8rem;
  margin-top:.25rem
}
.section-link {
  color:var(--muted);
  font-size:.75rem;
  white-space:nowrap
}
.section-link:hover {
  color:var(--accent)
}
.page-head {
  margin-bottom:2rem
}
.page-head h1 {
  font-size:2.5rem;
  margin:.5rem 0
}
.page-head p {
  max-width:650px
}
footer {
  padding-top:3rem;
  display:flex;
  justify-content:space-between;
  gap:1rem;
  font-size:.65rem;
  color:var(--muted)
}
footer a:hover {
  color:var(--accent)
}
.mobile-nav {
  display:none
}