/* 导航栏 毛玻璃 */
.nav {
  background: var(--nav-bg);
  backdrop-filter: blur(var(--blur-amount));
  border-bottom: 1px solid var(--nav-border);
  text-align: center;
  line-height: 70px;
  height: 70px;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
}

.nav a {
  color: var(--text-color);
  text-decoration: none;
}

.nav-icon {
  display: inline-block;
  position: relative;
  vertical-align: middle;
  height: 42px;
  line-height: 42px;
}

.nav-icon .nav-text {
  font-family:
    "NavFont", "STXingkai", "Xingkai SC", "华文行楷", "Zhi Mang Xing", cursive,
    sans-serif;
  display: inline-block;
  vertical-align: middle;
  white-space: nowrap;
  opacity: 1;
  transition: opacity 0.35s ease;
  font-size: 26px;
  font-weight: 700;
  letter-spacing: 1px;
  color: var(--text-color);
}

.nav-icon .icon {
  width: 42px;
  height: 42px;
  background-color: var(--icon-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) scale(0.2);
  opacity: 0;
  transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  pointer-events: none;
}

.nav-icon .icon svg {
  width: 20px;
  height: 20px;
  fill: var(--color-white);
}

.nav-icon:hover .nav-text {
  opacity: 0;
}

.nav-icon:hover .icon {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1.05);
}

.nav-icon:active .icon {
  transform: translate(-50%, -50%) scale(0.95);
}