.caution {
    position: absolute;
    display: block;
    /*top: 5px;*/
    right: 24px;
    height: auto;
    border: none;
}
.accordion  {
    max-width: 280px;
    font-size: 0.8em;
}

.accordion_title {
    position: relative;
    border: none;
    display: flex;
    width: max-content;
    align-items: center;
    gap: 5px;
    list-style: none;
    cursor: pointer;
    /*background: #ffebee;*/
    background: red;
    color: #333333;
    padding: 8px;
    border-radius: 50%;
    line-height: 1.6em;
}

summary.accordion_title::-webkit-details-marker {
  display:none;
}

.accordion_title:after {
    line-height: 1;
    padding: 0;
    pointer-events: none;
    font-size: 2.0em;
    margin-left: auto;
    font-wight: bold;
}

.accordion::details-content {
  opacity: 0;
  block-size: 0;
  transition: .3s;
  transition-property: display, opacity, block-size, padding;
  transition-behavior: allow-discrete;
  line-height: 1.6em;
  background: #ffffff;
}
.accordion .accordion_content {
    padding: 0 1.4em;
    position:relative;
    color: #333333;
    border: 2px solid #f2c8ce;
    /*border-top: none;*/
    border-radius: 0 5px 5px 0;
    background: #fffbf4;
}

/*.accordion_title::before {
    display: inline-block;
    position: relative;
    width: 20px;
    height: 20px;
    content: '';
    background-image: url("");
    background-repeat: no-repeat;
}*/
.accordion_title::after {
    content: "";
    background-image: url("../image/hint2.png");
    background-repeat: no-repeat;
    background-size: contain;
    width: 14px;
    height: 14px;
}
.accordion[open] .accordion_title:after {
    content: "";
    background-image: url("../image/hint_close2.png");
    background-repeat: no-repeat;
    background-size: contain;
    width: 14px;
    height: 14px;
    margin-left: auto;
}
.accordion[open] .accordion_title {
    border-radius: 7px 7px 0 0;
    left: calc(100% - 32px);
}
.accordion .accordion_content > *:first-of-type {
  margin-top: 0;
}

.accordion .accordion_content > *:last-of-type {
  margin-bottom: 0;
}

.accordion[open]::details-content {
  opacity: 1;
/*  block-size: auto;
  block-size: calc-size(auto, size);*/
}

.accordion[open] .accordion_content {
  padding: 1.4em 1.4em 1.4em 2em;
}

.accordion_content a {
    display:block;
    margin-top: 10px;
    font-family: unset;
}

.accordion_content a:link {
 color: #0000EE;
 text-decoration: underline;
}

.accordion_content a:visited {
 color: #551A8B;
 text-decoration: underline;
}

.accordion_content a:hover {}

.accordion_content a:active {
 color: #FF0000;
 text-decoration: underline;
}
.bubble {
    position: absolute;
    top: 3px;
    right: 30px;
    width: 100px;
    opacity: 0;
}
.caution:hover .bubble {
    opacity: 1;
}
.bubble {
    display: inline-block;
    margin-right: 20px;
    padding: 7px;
    border-radius: 8px;
    background-color: #c2c2c2;
    text-align: left;
    font-size: 11px;
    font-weight: 400;
    line-height: 1.5;
    color: #000000;
    transition: 0.3s ease-in; /* アニメーション */
}

.bubble::after {
  content: "";
  position: absolute;
  top: 35%;
  right: 0;
  border-style: solid;
  border-width: 7px 0 7px 20px;
  border-color: transparent transparent transparent #c2c2c2;
  translate: 100% -50%;
}