.performance-section {
  background-color: #1e1e1e;
  color: #e0e0e0;
  font-family: "Noto Serif JP", "Yu Mincho", "Hiragino Mincho ProN", serif;
  padding: 80px 0;
  min-height: 100vh;
}
.performance-section .custom-container {
  max-width: 1240px;
}
.performance-section .section-title {
  font-size: 30px;
  font-weight: 700;
  letter-spacing: 1.5px;
}
.performance-section .section-desc {
  font-size: 18px;
  font-weight: 300;
  line-height: 2;
  letter-spacing: 0.1em;
  color: #cccccc;
}
.performance-section .custom-table {
  color: #e0e0e0;
  margin-top: 30px;
}
.performance-section .custom-table th,
.performance-section .custom-table td {
  border-top: none;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  padding: 20px 10px;
  vertical-align: middle;
  font-size: 14px;
  font-weight: 400;
  letter-spacing: 0.05em;
  white-space: nowrap;
}
.performance-section .custom-table th {
  font-weight: 700;
  font-size: 16px;
  padding-bottom: 15px;
}
.performance-section .custom-table th:nth-child(2),
.performance-section .custom-table td:nth-child(2) {
  width: 30%;
}
.performance-section .btn-view-all {
  background: transparent;
  border: none;
  color: #e0e0e0;
  font-size: 13px;
  letter-spacing: 0.1em;
  cursor: pointer;
  outline: none;
  transition: opacity 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  margin: 0 auto;
}
.performance-section .btn-view-all:hover {
  opacity: 0.7;
}
.performance-section .btn-view-all .icon-chevron {
  display: inline-block;
  width: 12px;
  height: 12px;
  border-bottom: 1px solid #e0e0e0;
  border-right: 1px solid #e0e0e0;
  transform: rotate(45deg);
  margin-top: 10px;
  transition: transform 0.3s ease;
}
.performance-section .btn-view-all.expanded .icon-chevron {
  transform: rotate(225deg);
  margin-top: 15px;
  margin-bottom: 5px;
}

@keyframes fadeInSlideUp {
  0% {
    opacity: 0;
    transform: translateY(15px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}
@keyframes fadeOutSlideDown {
  0% {
    opacity: 1;
    transform: translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateY(10px);
  }
}
.hidden-row.fade-in td {
  opacity: 0;
  animation: fadeInSlideUp 0.6s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}
.hidden-row.fade-out td {
  animation: fadeOutSlideDown 0.3s ease-out forwards;
}

.table-responsive {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.table-responsive::-webkit-scrollbar {
  height: 6px;
}
.table-responsive::-webkit-scrollbar-track {
  background: rgba(255, 255, 255, 0.05);
  border-radius: 4px;
}
.table-responsive::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.2);
  border-radius: 4px;
}
.table-responsive::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.4);
}