html {
  position: relative;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
  font-size: 62.5%;
  word-break: break-word;
  overflow-wrap: break-word;
  scroll-behavior: smooth;
}

body {
  scroll-behavior: smooth;
  margin: 0;
  padding: 0;
  width: 100%;
  overflow-x: hidden;
  overflow-y: scroll;
  min-height: 100vh;
  font-size: 1.6rem;
  color: #333;
  min-height: -webkit-fill-available;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-backface-visibility: hidden;
  backface-visibility: hidden;
  background-image: url('../images/bg-mosaic.png');
  
  z-index: -1;
}

*,
*:before,
*:after {
  box-sizing: border-box;
  margin: 0;
}

ul[class],
ol[class] {
  list-style: none;
}

ul, li {
  list-style: none;
  padding: 0;
  margin: 0;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

.filter-panel {
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.3s ease;
  will-change: max-height;
}

.filter-panel.is-open {
  opacity: 1;
}

#search-again-details > summary.is-locked {
  pointer-events: none;  /* マウス無効化はsummaryだけ */
  /* opacity: 0.6; */
  cursor: default;
  user-select: none;
  color: #B2B2B2;
  border-bottom-color: #B2B2B2;
  text-shadow: none;
}