body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f5f7fb;
  color: #222;
}

.container {
  max-width: 1200px;
  margin: 40px auto;
  padding: 24px;
}

h1 {
  margin-bottom: 8px;
}

.desc {
  color: #666;
  margin-bottom: 20px;
}

button {
  padding: 10px 16px;
  border: none;
  background: #111827;
  color: white;
  border-radius: 8px;
  cursor: pointer;
  margin-bottom: 20px;
}

button:hover {
  opacity: 0.9;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 10px;
  overflow: hidden;
}

th, td {
  padding: 14px 12px;
  border-bottom: 1px solid #e5e7eb;
  text-align: left;
  vertical-align: top;
}

th {
  background: #f3f4f6;
  font-weight: 600;
}

tr:hover {
  background: #fafafa;
}

.up {
  color: #0a8f3d;
  font-weight: 600;
}

.down {
  color: #c62828;
  font-weight: 600;
}