:root {
  --dm-gradual-blur-height: clamp(4rem, 11vh, 8.5rem);
  --dm-gradual-blur-z: 70;
}

html.dm-gradual-blur-active,
html.dm-gradual-blur-active body {
  overscroll-behavior-y: none;
}

.gradual-blur {
  isolation: isolate;
}

.gradual-blur-fixed {
  position: fixed !important;
  top: auto;
  left: 0;
  right: 0;
  bottom: 0;
  height: var(--dm-gradual-blur-height);
  pointer-events: none;
  z-index: var(--dm-gradual-blur-z, 1000);
}

.gradual-blur-inner {
  position: relative;
  width: 100%;
  height: 100%;
}

.gradual-blur-inner > div {
  -webkit-backdrop-filter: var(--dm-gradual-blur-filter, inherit);
  backdrop-filter: var(--dm-gradual-blur-filter, inherit);
}

.dm-gradual-blur {
  position: fixed;
  pointer-events: none;
  z-index: var(--dm-gradual-blur-z);
  opacity: 1;
  contain: layout paint style;
  transform: translateZ(0);
}

.dm-gradual-blur--bottom {
  left: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  height: var(--dm-gradual-blur-height);
}

.dm-gradual-blur__layer {
  position: absolute;
  inset: 0;
  opacity: var(--dm-gradual-blur-opacity, 1);
  backdrop-filter: blur(var(--dm-gradual-blur-radius));
  -webkit-backdrop-filter: blur(var(--dm-gradual-blur-radius));
  will-change: backdrop-filter, -webkit-backdrop-filter, opacity;
}

.dm-gradual-blur--bottom .dm-gradual-blur__layer {
  mask-image: linear-gradient(
    to bottom,
    transparent var(--dm-gradual-blur-start),
    #000 var(--dm-gradual-blur-end)
  );
  -webkit-mask-image: linear-gradient(
    to bottom,
    transparent var(--dm-gradual-blur-start),
    #000 var(--dm-gradual-blur-end)
  );
}

.dm-gradual-blur--bottom::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(0, 0, 0, 0),
    rgba(0, 8, 4, .44)
  );
}

@supports not (backdrop-filter: blur(1px)) {
  .gradual-blur-inner > div,
  .dm-gradual-blur__layer {
    background: rgba(0, 0, 0, 0.3);
    opacity: 0.5;
  }
}

@media (max-width: 760px) {
  :root {
    --dm-gradual-blur-height: clamp(3.25rem, 9vh, 5.5rem);
  }
}

@media (prefers-reduced-transparency: reduce) {
  .dm-gradual-blur { display: none; }
}