*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: #1a1a2e;
  display: flex;
  min-height: 100vh;
  line-height: 1.7;
}

/* Sidebar */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: #0f3460;
  padding: 1.5rem 1rem;
  flex-shrink: 0;
}
.logo { color: #e94560; font-size: 1.2rem; font-weight: 700; text-decoration: none; display: block; margin-bottom: 2rem; }
.sidebar ul { list-style: none; }
.sidebar ul li { margin-bottom: .75rem; }
.sidebar ul a { color: #ccc; text-decoration: none; }
.sidebar ul a:hover { color: #fff; }

/* Content */
.content { flex: 1; padding: 3rem 4rem; max-width: 860px; }
.content h1 { font-size: 2rem; margin-bottom: 1rem; color: #0f3460; }
.content h2 { font-size: 1.4rem; margin: 2.5rem 0 .75rem; color: #16213e; border-bottom: 2px solid #e94560; padding-bottom: .25rem; }
.content p  { margin-bottom: 1rem; }
pre { background: #f0f2f5; border-radius: 6px; padding: 1rem; overflow-x: auto; margin: 1rem 0; }
code { font-family: "SFMono-Regular", Consolas, monospace; font-size: .9rem; }
a { color: #e94560; }