.app-shell { min-height: 100vh; }
.sidebar {
  position: fixed;
  inset: 0 auto 0 0;
  width: var(--sidebar-width);
  padding: 24px 16px 18px;
  background: rgba(5,5,5,.96);
  border-right: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  z-index: 20;
}
.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 2px 8px 20px;
  border-bottom: 1px solid var(--line);
}
.brand-mark {
  width: 48px;
  height: 34px;
  object-fit: cover;
  object-position: center;
  border-radius: 6px;
}
.brand-copy strong { display: block; font-size: 13px; letter-spacing: .02em; }
.brand-copy span { display: block; margin-top: 3px; font-size: 11px; color: var(--muted); }
.sidebar-nav { padding-top: 18px; display: grid; gap: 5px; }
.sidebar-bottom { margin-top: auto; padding-top: 18px; border-top: 1px solid var(--line); }
.main-shell { margin-left: var(--sidebar-width); min-height: 100vh; }
.topbar {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 0 30px;
  border-bottom: 1px solid var(--line);
  background: rgba(5,5,5,.82);
  backdrop-filter: blur(18px);
  position: sticky;
  top: 0;
  z-index: 10;
}
.page { padding: 30px; max-width: 1640px; margin: 0 auto; }
.page-header { display: flex; justify-content: space-between; gap: 20px; align-items: flex-end; margin-bottom: 28px; }
.page-kicker { color: var(--muted); text-transform: uppercase; font-size: 10px; letter-spacing: .18em; margin-bottom: 8px; }
.page-title { font-size: clamp(28px, 3vw, 42px); font-weight: 600; }
.page-subtitle { margin-top: 9px; color: var(--muted); font-size: 13px; max-width: 720px; line-height: 1.6; }
.grid { display: grid; gap: 16px; }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.span-2 { grid-column: span 2; }
.grid-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.header-actions { display:flex; flex-wrap:wrap; gap:8px; justify-content:flex-end; }