@charset "utf-8";

body {
    font-family: 'Noto Sans JP', serif;
    background: #000;
    color: #ffffff;
    font-size: 16px;
}

body::before {
    content: "";
    display: block;
    position: fixed;
    top: 0;
    left: 0;
    z-index: -1;
    width: 100%;
    height: 100vh;
    background: url(../image/background.jpg) center no-repeat;
    background-size: cover;
}

body img {
    display: block;
    width: 100%;
    margin: 0 auto;
}

/*header*/
header {
    height: 80px;
    border-bottom: 6px solid #806924;
    text-align: center;
    background: #000;
}

header a {
    display: inline-block;
    width: 230px;
    margin: 10px auto;
}

@media screen and (max-width: 769px){
    header {
        height: 60px;
    }

    header a {
        width: 160px;
    }
}

/**/
main {
    max-width: 880px;
    margin: 0 auto;
    padding: 0 16px;
}

h1 {
    padding: 40px 30px;
}

h2 {
    text-align: center;
    margin: 0 0 20px 0;
    padding: 4px 0;
    background: #806924;
}

/**/
.list {
    display: flex;
    flex-wrap: wrap;
    justify-content:space-evenly;
}

.list__item {
    margin: 0 0 40px;
    width: calc(30% - 10px);
    background: #d9d9d9;
    clip-path: polygon(0 0, 0 0, 100% 0, 100% calc(100% - 1.5em), calc(100% - 1.5em) 100%, 0 100%);
    color: #000;
}

@media screen and (max-width: 769px){
    .list__item {
        width: 100%;
        margin: 0 0 40px;
    }
}

.list__item img{
    object-fit: cover;
    object-position: top;
    max-height: 280px;
}

.list__block {
    padding: 12px;
}

.list__text {
    margin: 0 0 8px 0;
    padding: 0 0 0 4px;
    border-left: 4px solid #000;
    font-weight: bold;
    font-size: 18px;
}

.list__name {
    font-weight: bold;
    color: #806924;
    font-size: 14px;
    line-height: 2.0;
}

.list__name_sub {
    display: block;
    margin: 10px 0 0 0;
}

.list__song {
    font-weight: bold;
    color: #2759cf;
}

.list__note {
    font-size: 13px;
}

/**/
footer {
    background: #000;
    padding: 30px 16px;
    text-align: center;
}

.logo_rise {
    width: 150px;
}

.copyright {
    margin: 30px 0 0 0;
    font-size: 11px;
}


/*-------------------------------
目次(五十音順)
--------------------------------*/
.toc-container {
  max-width: 400px;
  margin: 20px;
  border: 1px solid #ccc;
  border-radius: 8px;
  font-family: sans-serif;
}

.toc-header {
  padding: 10px 15px;
  cursor: pointer;
  user-select: none;
}

.toc-list {
  padding: 10px 15px;
  display: none; /* デフォルトで閉じておく */
  background-color: #fff;
}

.toc-list ul {
  padding-left: 1.2em;
}

.toc-container.open .toc-list {
  display: block;
}


.toc-gyou{
    background: #333;
}


/*-------------------------------
上に戻るボタン
--------------------------------*/
.back-to-top {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background-color: #333;
  color: white;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  text-align: center;
  line-height: 48px;
  font-size: 20px;
  cursor: pointer;
  box-shadow: 0 4px 6px rgba(0,0,0,0.2);
  z-index: 1000;
  transition: background-color 0.3s;
}

.back-to-top:hover {
  background-color: #555;
}


/*-------------------------------
▼大型画面向けデザイン（PCなど）
--------------------------------*/
@media screen and (min-width: 769px){
    

}