:root {
  --bg: #0f172a;
  --text: #e5e7eb;
  --accent: #38bdf8;
  --accent-2: #f59e0b;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, system-ui, "Segoe UI", Roboto, Arial, sans-serif;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: flex-start;
  height: 64px;
  padding: 0 18px;
  background: rgba(15,23,42,.8);
  border-bottom: 1px solid rgba(148,163,184,.15);
  backdrop-filter: blur(8px);
}

a.brand {
  color: var(--text);
  text-decoration: none;
  font-weight: 700;
  letter-spacing: .3px;
}