body {
  font-family: Arial, sans-serif;
  background: #f4f6f9;
  margin: 0;
  padding: 15px;
}

.container {
  max-width: 900px;
  margin: auto;
  font-size: 15px;
}

h1 {
  text-align: center;
  margin-bottom: 20px;
}

/* Accordion Style */
.accordion {
  background: white;
  margin-bottom: 10px;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0,0,0,0.08);
}

.accordion-header {
  padding: 15px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: #2563eb;
  color: white;
  font-weight: bold;
}

.arrow {
  transition: 0.3s;
}

.rotate {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease;
}

.accordion-content.active {
  max-height: 500px;
}

/* Table */
table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 10px;
  text-align: center;
  font-size: 14px;
}

thead {
  background: #e2e8f0;
}

tbody tr:nth-child(even) {
  background: #f8fafc;
}

.credit {
  text-align: center;
  margin-top: 30px;
  padding: 15px;
  font-size: 13px;
  color: #64748b;
}


/* Mobile */
@media (max-width: 600px) {
  th, td {
    font-size: 12px;
    padding: 6px;
  }
}