:root{--bg: #0b0c10;--fg: #e0e7ff;--muted: #64748b;--card: #1e293b;--border: #334155}.sidebar{background:var(--card);border-right:1px solid var(--border)}.nav-link{color:var(--muted);transition:color .2s}.nav-link:hover,.nav-link.active,.prose,.prose h1,.prose h2,.prose h3{color:var(--fg)}