@charset "UTF-8";
:root {
  --bg-color-light: #fafafa;
  --sub-bg-color-light: #f0f0f0;
  --logo-color-light: #737373;
  --text-color-light: #232324;
  --sub-text-color-light: #6e6e6f;
  --link-color-light: #232324;
  --primary-color-light: #757575;
  --border-color-light: #e5e5ea;
  --box-color-light: #c7c7cc;
  --alert-color-light: #bf1419;
}

/* :root,
* {
  --bg-color: var(--bg-color-light);
  --sub-bg-color: var(--sub-bg-color-light);
  --logo-color: var(--logo-color-light);
  --text-color: var(--text-color-light);
  --sub-text-color: var(--sub-text-color-light);
  --link-color: var(--link-color-light);
  --primary-color: var(--primary-color-light);
  --border-color: var(--border-color-light);
  --box-color: var(--box-color-light);
  --alert-color: var(--alert-color-light);
} */

/* -----------------------------------------------
  reset
----------------------------------------------- */
html, body, div, h1, h2, h3, h4, p, a, ol, ul, li, table, tr, td, article, figure, section, nav {
  margin: 0;
  padding: 0;
  border: 0;
  outline: 0;
  vertical-align: baseline;
  background: transparent;
}

html {
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
      text-size-adjust: 100%;
}

body {
  line-height: 1.4;
  color: var(--text-color);
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
      text-size-adjust: 100%;
  font-family: -apple-system, BlinkMacSystemFont, Roboto, "Hiragino Sans", "Hiragino Kaku Gothic ProN", "ヒラギノ角ゴ ProN W3", Meiryo, "メイリオ", sans-serif;
}

h1, h2, h3, h4, table, p, ul, ol {
  font-size: 100%;
}

article, figure, nav, section {
  display: block;
}



a,
a:link,
a:visited,
a:hover,
a:active {
  color: var(--text-color);
}

table {
  border-collapse: collapse;
  border-spacing: 0;
  line-height: 1.4;
}

/* -----------------------------------------------
  contents
----------------------------------------------- */

html {
  background-color: var(--bg-color);
}

body {
  color: var(--link-color);
}

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 50px 10px 150px;
  line-height: 1.7;
}

.container h1{
  margin-bottom: 1em;
  font-size: 1.4em;
}

.container h2 {
  margin-top: 2em;
  font-size: 1.2em;
}

.container h3 {
  margin-top: 2em;
  font-size: 1.1em;
}

.container h4 {
  background-color: var(--sub-bg-color);
  margin-top: 1em;
  padding: 6px 12px;
  font-size: 1em;
}

.container > p {
  margin: 1em 0;
}

.container ul {
  margin: 0.5em 0 1em;
  padding-left: 1.5em;
  list-style-type: disc;
}

.container ul > li {
  text-indent: 0;
}

.container ol {
  margin: 1em 0;
}

.container ol > li {
  margin-left: 1.8em;
}

.container table {
  margin: 1em 0;
}

.container table td + td {
  padding-left: 3em;
}



.container div.information {
  background-color: var(--sub-bg-color);
  margin-bottom: 2em;
  padding: 1em;
}

.container nav.toc {
  color: var(--sub-text-color);
  margin-bottom: 2em;
}

.container .katakana_list {
  list-style-type: katakana;
}

.container .brackets_list li {
  list-style-type: none;
  counter-increment: cnt;
}

.container .brackets_list li::before {
  display: inline-block;
  content: "(" counter(cnt) ") ";
  margin-right: 0.5em;
  margin-left: -3.5em;
  width: 3em;
  text-align: right;
}

.container .text_align_right {
  text-align: right;
}

.container .font_weight_normal {
  font-weight: normal;
}

/* -----------------------------------------------
  platform
----------------------------------------------- */
.container .platform_menu {
  display: flex;
  flex-wrap: wrap;
  margin-top: 2em;
  padding: 0;

}
.container .platform_menu li {
  background-color: var(--sub-bg-color-light);
  margin-right: 0.5%;
  margin-left: 0.5%;
  margin-bottom: 1%;
  padding: 0 5px;
  width: 15.6%;
  height: 54px;
  text-decoration: underline;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-sizing: border-box;
}
.container .platform_menu li.menu-active {
  color: var(--bg-color-light);
  background-color: var(--logo-color-light);
}
.container .platform_list_cont {
  display: none;
}
.container .platform_list_cont h2 {
  border-left: 4px solid var(--logo-color-light);
  line-height: 1;
  padding-left: 0.5em;
  width: 100%;
  text-align: left;
  box-sizing: border-box;
}
.container .platform_list_cont ul {
  padding: 0;
  list-style-type: none;
  display: flex;
  flex-wrap: wrap;
  text-align: center;
}
.container .platform_list_cont li {
  width: 20%;
  margin-bottom: 1em;
  padding: 0 10px;
  box-sizing: border-box;
  border-top: 1px solid var(--border-color-light);
}
.container .platform_list_cont figure {
  margin-top: 1.5em;
}
.container .platform_list_cont figure img {
  max-width: 100px;
  border-radius: 50%;
}
.container .platform_list_cont a {
  color: var(--sub-text-color-light);
}

.container .platform_menu li.btn-assistant {
  font-size: 84%;
}
.container .platform_list_cont.list-facebook figure img,
.container .platform_list_cont.list-gyao figure img,
.container .platform_list_cont.list-assistant figure img,
.container .platform_list_cont.list-roku figure img {
  border-radius: 0;
}


@media screen and (min-width:768px) {
  .container .platform_list_cont li:nth-child(-n+5) {
    border-top: none;
  }
}
@media screen and (max-width: 767px) {
  .container .platform_menu li {
    width: 32%;
    margin-left: 0;
    margin-right: 2%;
  }
  .container .platform_menu li:nth-child(3n) {
    margin-right: 0;
  }
  .container .platform_list_cont li {
    width: 50%;
  }
  .container .platform_list_cont li:nth-child(-n+2) {
    border-top: none;
  }
}