body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  background-color: #f8f9fa;
  margin: 0;
  padding: 0;
  color: #333;
}

header {
  background-color: #fff;
  padding: 20px 0;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  text-align: center;
  margin-bottom: 30px;
}

h1 {
  margin: 0;
  color: #2d3a4b;
  font-size: 2.2rem;
}

#palette-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 24px 20px 48px 20px;
  display: flex;
  flex-direction: column;
  gap: 32px;
  overflow-y: auto;
}

.palette-row {
  display: flex;
  flex-direction: row;
  gap: 48px; /* 组与组间距 */
  justify-content: center;
}

.palette {
  display: flex;
  flex-direction: row;
  gap: 0; /* 组内无间距 */
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border-radius: 12px;
  overflow: hidden;
}

.color-block {
  width: 90px;
  height: 90px;
  position: relative;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 8px;
  box-sizing: border-box;
}

.color-block:hover {
  transform: scale(1.05);
  z-index: 10;
  box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.color-label {
  color: white;
  font-size: 0.75rem;
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
  background-color: rgba(0, 0, 0, 0.3);
  padding: 2px 4px;
  border-radius: 4px;
  text-align: center;
  transition: all 0.3s ease;
  opacity: 0;
}

.color-block:hover .color-label {
  opacity: 1;
}

.copied-tip {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background-color: rgba(0, 0, 0, 0.7);
  color: white;
  padding: 5px 10px;
  border-radius: 20px;
  font-size: 0.8rem;
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}

.color-block.copied .copied-tip {
  opacity: 1;
}

footer {
  text-align: center;
  padding: 20px 0;
  background-color: #fff;
  margin-top: 40px;
  box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
}

@media (max-width: 1200px) {
  .palette-row {
    gap: 24px;
  }
  .color-block {
    width: 70px;
    height: 70px;
  }
}

@media (max-width: 768px) {
  .palette-row {
    flex-direction: column;
    gap: 16px;
  }
  .palette {
    width: 100%;
  }
  .color-block {
    width: 100%;
    height: 60px;
  }
}