@charset "utf-8";


.title {
  height: 310px;
  background-image: url(../images/archive/bg-archive04.jpg);
  background-repeat: no-repeat;
  background-position: left center;
  background-size: cover;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  color: #ffffff;
  text-shadow: 1px 1px 10px #000000;
}

.title h1 {
  font-family: 'Montserrat', sans-serif;
  font-size: 32px;
  font-weight: bold;
}

.title p {
  font-size: 14px;
  margin-top: 15px;
}

.preface {
  width: 760px;
  max-width: 100%;
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
}

.section_inner {
  width: 760px;
  max-width: 100%;
  margin-top: 20px;
  margin-left: auto;
  margin-right: auto;
}

.kv_boxes {
  display: grid;
  gap: 12px;
}

.kv-box_head {
  display: block;
  background: #4a4a4a;
  color: #ffffff;
  padding: 20px;
  position: relative;
}

.kv-box_head::-webkit-details-marker {
  display: none;
}

.kv-box_head::before,
.kv-box_head::after {
  content: "";
  position: absolute;
  top: 50%;
  translate: 0 -50%;
  background: #ffffff;
}

.kv-box_head::before {
  width: 16px;
  height: 2px;
  right: 16px;  
}

.kv-box_head::after {
  width: 2px;
  height: 16px;
  right: 23px;
  transition: rotate 0.3s;
}

.kv-box[open] .kv-box_head::after {
  rotate: 90deg;
}

.kv-box_body {
  margin-top: 10px;
  color: #5f5f5f;
  overflow: hidden;
  text-indent: 1em;
}

.mov{
  color: #000000;
  text-indent: 0;
}

.footer {
  margin-top: 75px;
}

@media (max-width: 768px) {
  .preface {
    max-width: 90%;
    margin-top: 20px;
  }
  
  .section_inner {
    max-width: 100%;
    margin-top: 20px;
    }

  .kv-box_body {
    max-width: 90%;
    margin-left: auto;
    margin-right: auto;
  }

}