body { background: #f5f6f8; }
.card { border: 0; box-shadow: 0 2px 10px rgba(0,0,0,.06); }
aside .nav-link { color: #263238; }
aside .nav-link:hover { background: #e9ecef; }
.table thead th { white-space: nowrap; }
.metric { font-size: 2rem; font-weight: 700; }