body {
  background-color: #f8f9fa;
}

.stat-card {
  border: none;
  box-shadow: 0 1px 4px rgba(0,0,0,.08);
  transition: box-shadow .15s;
}
.stat-card:hover {
  box-shadow: 0 3px 10px rgba(0,0,0,.13);
}

.stat-number {
  font-size: 2.4rem;
  font-weight: 700;
  line-height: 1;
  margin-bottom: .3rem;
}

.stat-label {
  font-size: .85rem;
  color: #6c757d;
  text-transform: uppercase;
  letter-spacing: .04em;
}

.border-dashed {
  border-style: dashed !important;
  border-color: #ced4da !important;
}

.rank-table th, .rank-table td {
  font-size: .82rem;
  padding: .35rem .5rem;
}

.navbar-brand {
  font-size: 1.15rem;
}

.card {
  border-radius: .6rem;
}

.card-header {
  background-color: #fff;
  border-bottom: 1px solid rgba(0,0,0,.08);
  padding: .85rem 1.25rem;
}

@media (max-width: 576px) {
  .stat-number { font-size: 1.8rem; }
  h1 { font-size: 1.5rem; }
}