CSS背景渐变平滑过渡技巧

.box {
  background-color: #ff7e5f;
  transition: background-color 0.5s ease;
}

.box:hover {
  background-color: #feb47b;
}

.gradient-box {
  position: relative;
  background: linear-gradient(45deg, #ff7e5f, #feb47b);
  transition: opacity 0.1s;
}

.gradient-box::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(45deg, #36d1dc, #5b86e5);
  opacity: 0;
  transition: opacity 0.6s ease;
  z-index: -1;
}

.gradient-box:hover::before {
  opacity: 1;
}

.dynamic-bg {
  background: linear-gradient(45deg, var(--color1), var(--color2));
  transition: all 0.8s ease;
}

element.style.setProperty('--color1', '#ff7e5f');
element.style.setProperty('--color2', '#feb47b');

@keyframes slideGradient {
  0% { background-position: 0% 50%; }
  50% { background-position: 100% 50%; }
  100% { background-position: 0% 50%; }
}

.animated-gradient {
  background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
  background-size: 400% 400%;
  animation: slideGradient 5s ease infinite;
}