body {
  background: linear-gradient(135deg, #f7faff 60%, #e3edfa 100%);
  min-height: 100vh;
  margin: 0;
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #222;
}
.history-header {
  display: flex;
  align-items: center;
  gap: 18px;
  padding: 32px 32px 18px 32px;
}
.history-title {
  font-size: 1.45rem;
  font-weight: 700;
  color: #1976f9;
  letter-spacing: 1px;
}
.history-back-btn {
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 2px 12px #e3edfa;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.2s, box-shadow 0.2s;
  border: none;
  cursor: pointer;
  margin-right: 18px;
}
.history-back-btn:hover {
  background: #e3edfa;
  box-shadow: 0 4px 18px #e3edfa;
}
.history-main {
  display: flex;
  justify-content: center;
  align-items: flex-start;
  min-height: 60vh;
}
.history-table {
  width: 100%;
  max-width: 900px;
  background: #fff;
  border-radius: 18px;
  box-shadow: 0 6px 32px rgba(45,127,249,0.10);
  margin-top: 32px;
  border-collapse: separate;
  border-spacing: 0;
  overflow: hidden;
}
.history-table th, .history-table td {
  padding: 12px 16px;
  text-align: left;
}
.history-table thead th {
  background: #f7faff;
  color: #1976f9;
  font-weight: 700;
  font-size: 1.08rem;
}
.history-table tbody tr {
  border-bottom: 1px solid #e3edfa;
  transition: background 0.15s;
}
.history-table tbody tr:hover {
  background: #f7faff;
}
.history-table th:nth-child(3), .history-table td:nth-child(3) {
  min-width: 160px;
  max-width: 260px;
  width: 22%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-table th:nth-child(6), .history-table td:nth-child(6) {
  min-width: 180px;
  max-width: 340px;
  width: 28%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.history-table th:nth-child(2), .history-table td:nth-child(2) {
  min-width: 70px;
  max-width: 110px;
  width: 10%;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}