body {
  margin: 0;
  font-family: Arial, sans-serif;
  background: #f4fff4;
}
header {
  background: #0a5f0a;
  color: #fff;
  padding: 14px;
  text-align: center;
}
.menu {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 10px;
  background: #e6f7e6;
  padding: 10px;
}
.menu button,
.back-btn {
  border: none;
  background: #fff;
  color: #0a5f0a;
  font-weight: bold;
  border-radius: 6px;
  padding: 8px 14px;
  cursor: pointer;
  text-decoration: none;
}
.summary {
  background: #e9f5e8;
  margin: 15px auto;
  padding: 10px 20px;
  border-radius: 8px;
  text-align: center;
  width: fit-content;
  font-size: 15px;
}
.table-container {
  overflow-x: auto;
  padding: 10px;
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
th {
  background: #0a5f0a;
  color: #fff;
  padding: 8px;
}
td {
  padding: 6px;
  text-align: center;
  border-bottom: 1px solid #ddd;
}
@media (max-width: 480px) {
  th, td { font-size: 12px; padding: 4px; }
}