@charset "UTF-8";

.thumbnail_section {
  display: flex;
  margin: -10px 0;
  -webkit-flex-direction: row;
  -ms-flex-direction: row;
  flex-direction: row;
  -webkit-flex-wrap: wrap;
  -ms-flex-wrap: wrap;
  flex-wrap: wrap;
  justify-content: flex-start;
  -webkit-justify-content: flex-start;
  -ms-justify-content: flex-start;
  align-items: flex-end;
  -webkit-align-items: flex-end;
  -ms-align-items: flex-end;
}
.thumbnail_section .each_thumbnail {
  width: 49.9%;
  box-sizing: border-box;
  padding: 12px 10px;
}
.thumbnail_section .each_thumbnail:nth-child(odd) {
  padding-left: 0;
}
.thumbnail_section .each_thumbnail:nth-child(even) {
  padding-right: 0;
}
.thumbnail_section .each_thumbnail .pic {
  border: 1px solid #ccc;
  cursor: pointer;
  padding: 6px;
  position: relative;
  transition: border ease .2s, box-shadow ease .2s;
}
.thumbnail_section .each_thumbnail .pic:hover {
  border: 1px solid #999;
  box-shadow: 0px 0px 2px rgba(0,0,0,.4);
}
.thumbnail_section .each_thumbnail .ai_a_txt, .thumbnail_section .each_thumbnail .ai_b_txt {
  background-color: #000;
  color: #fff;
  font-size: 12px;
  line-height: 16px;
  padding: 2px 5px;
  position: absolute;
}
.thumbnail_section .each_thumbnail .ai_a_txt {
  bottom: 6px;
  left: 6px;
}
.thumbnail_section .each_thumbnail .ai_b_txt {
  bottom: 6px;
  left: 53.6%;
}
.thumbnail_section .each_thumbnail .pic img {
  max-width: 100%;
  height: auto;
  display: block;
}
.thumbnail_section .each_thumbnail p {
  font-size: 16px;
  margin: 4px 0;
}
.thumbnail_section .each_thumbnail.for_btn {
  display: flex;
  align-items: flex-end;
  -webkit-align-items: flex-end;
  -ms-align-items: flex-end;
}
/* version 2.0 */
.thumbnail_section.ver_2 .each_thumbnail .inner {
  overflow: hidden;
  position: relative;
}
.thumbnail_section.ver_2 .each_thumbnail .pic img {
  position: relative;
}
.thumbnail_section.ver_2 .each_thumbnail .pic img.before {
  position: absolute;
  top: 0;
  left: 0;
  opacity: 0;
  transition: opacity ease .4s;
  z-index: 2;
}
.thumbnail_section.ver_2 .each_thumbnail:hover .pic img.before {
  opacity: 1;
}
.thumbnail_section.ver_2 .each_thumbnail.vertical .pic img {
  max-width: none;
  width: 224.5%;
  position: relative;
  left: -62%;
}
.thumbnail_section.ver_2 .each_thumbnail.vertical .pic img.before {
  position: absolute;
  top: 0;
}
.thumbnail_section.ver_2 .separate_line {
  width: 100%;
  height: 1px;
  background-color: #ccc;
  margin: 20px 0;
}

.btn_video_img {
  cursor: pointer;
  margin-top: 25px;
  margin-bottom: 30px;
}
.btn_video_img img {
  width: 100%;
  max-width: 538px;
  height: auto;
  display: block;
  margin: 0 auto;
}
@media screen and (max-width:768px) {
  .thumbnail_section .each_thumbnail.for_btn {
    width: 100%;
    padding-top: 0;
    margin-top: -10px;
  }
  .thumbnail_section {
    justify-content: center;
    -webkit-justify-content: center;
    -ms-justify-content: center;
  }
}
@media screen and (max-width:600px) {
  .thumbnail_section .each_thumbnail {
    width: 100%;
    max-width: 500px;
    padding: 10px 0;
  }
}