*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --c-bg: #eee;
  --c-bg-t: #eeeeeedd;
  --c-main: #ed4747;
  --c-main-t: #ed474714;
  --fw-normal: 600;
  --fw-bold: 900;
  --w-max: 960px;
}

html {
  background: var(--c-bg);
  color: var(--c-main);
  font-family: "Noto Sans JP", sans-serif;
  font-weight: var(--fw-normal);
  font-optical-sizing: auto;
  font-style: normal;
}

.Container {
  display: flex;
  flex-flow: column nowrap;
  min-height: 100dvh;
}

.Header {
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-flow: column nowrap;
  align-items: center;
  width: 100%;
  padding: 16px;
  border-bottom: dashed 2px var(--c-main);
  background: var(--c-bg-t);
  z-index: 2;
}

.Header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  max-width: var(--w-max);
}

.Header-logo {
  display: block;
  height: 32px;
  line-height: 32px;
}

.Header-logo img {
  height: 32px;
}

.Header-menu {
  display: block;
  width: 32px;
  height: 32px;
  border: none;
  cursor: pointer;
  background-color: transparent;
  background-image: url("/assets/menu_open.svg");
  background-repeat: no-repeat;
  background-size: contain;
}

.Header-menu.open {
  background-image: url("/assets/menu_close.svg");
}

.Header-nav {
  width: 100%;
  height: 0px;
  max-width: var(--w-max);
  padding: 0 16px;
  list-style: none;
  overflow: hidden;
  font-size: 48px;
  font-weight: var(--fw-bold);
  transition: height .3s ease-out;
}

.Header-nav li {
  margin-top: 48px;
}

.Header-nav a {
  text-decoration: none;
  color: var(--c-main);
}

.Header-nav.open {
  height: calc(100dvh - 66px);
}

.Footer {
  display: flex;
  justify-content: center;
  border-top: dashed 2px var(--c-main);
  padding: 16px;
  background: var(--c-main-t);
}

.Footer-inner {
  display: flex;
  flex-flow: column nowrap;
  width: 100%;
  max-width: var(--w-max);
}

.Footer-links {
  flex: 1;
  font-size: 32px;
  font-weight: var(--fw-bold);
  list-style: none;
}

.Footer-links a {
  text-decoration: none;
  color: var(--c-main);
}

.Footer-credit {
  margin-top: 64px;
  text-align: center;
}

.Video {
  width: 100%;
  aspect-ratio: 16 / 9;
}

.Main {
  flex: 1;
  display: flex;
  justify-content: center;
  width: 100%;
  margin-top: 58px;
  padding: 16px 16px 32px;
}

.Main-inner {
  width: 100%;
  max-width: var(--w-max);
}

.VisuallyHidden {
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  width: 1px;
  height: 1px;
  overflow: hidden;
  position: absolute;
  white-space: nowrap;
}

.VideoList {
  width: 100%;
  max-width: var(--w-max);
  list-style-type: none;
  margin-top: 16px;
}

.VideoList li:not(:first-of-type) {
  margin-top: 64px;
}

.VideoListItem {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
}
@media screen and (max-width: 768px) {
  .VideoListItem {
    grid-template-columns: repeat(4, 1fr);
  }
}

.VideoListItem-number {
  grid-column-start: 1;
  grid-column-end: 3;
  grid-row-start: 1;
  grid-row-end: 1;
  border-left: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-number {
    grid-column-start: 1;
    grid-column-end: 1;
  }
}

.VideoListItem-date {
  grid-column-start: 4;
  grid-column-end: 4;
  grid-row-start: 1;
  grid-row-end: 1;
  border-left: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-date {
    grid-column-start: 2;
    grid-column-end: 2;
  }
}

.VideoListItem-seconds {
  grid-column-start: 5;
  grid-column-end: 5;
  grid-row-start: 1;
  grid-row-end: 1;
  border-left: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-seconds {
    grid-column-start: 3;
    grid-column-end: 3;
  }
}

.VideoListItem-bpm {
  grid-column-start: 6;
  grid-column-end: 6;
  grid-row-start: 1;
  grid-row-end: 1;
  border-left: solid 1px var(--c-main);
  border-right: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-bpm {
    grid-column-start: 4;
    grid-column-end: 4;
  }
}

.VideoListItem-title {
  grid-column-start: 1;
  grid-column-end: 7;
  grid-row-start: 2;
  grid-row-end: 2;
  border-top: solid 1px var(--c-main);
  border-left: solid 1px var(--c-main);
  border-right: solid 1px var(--c-main);
  border-bottom: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-title {
    grid-column-start: 1;
    grid-column-end: 5;
  }
}

.VideoListItem-thumbnail {
  display: block;
  width: 100%;
  grid-column-start: 1;
  grid-column-end: 5;
  grid-row-start: 3;
  grid-row-end: 3;
  border-left: solid 1px var(--c-main);
  padding: 0;
}
@media screen and (max-width: 768px) {
  .VideoListItem-thumbnail {
    grid-column-start: 1;
    grid-column-end: 5;
    border-right: solid 1px var(--c-main);
  }
}

.VideoListItem-info {
  grid-column-start: 5;
  grid-column-end: 7;
  grid-row-start: 3;
  grid-row-end: 3;
  border-left: solid 1px var(--c-main);
  border-right: solid 1px var(--c-main);
}
@media screen and (max-width: 768px) {
  .VideoListItem-info {
    grid-column-start: 1;
    grid-column-end: 5;
    grid-row-start: 5;
    grid-row-end: 5;
  }
}

.VideoListItem-youtube {
  display: block;
  grid-column-start: 1;
  grid-column-end: 3;
  grid-row-start: 4;
  grid-row-end: 4;
  border-top: solid 1px var(--c-main);
  border-left: solid 1px var(--c-main);
  border-bottom: solid 1px var(--c-main);
  background-color: var(--c-main-t);
  text-decoration: none;
  color: var(--c-main);
  font-weight: bold;
}
@media screen and (max-width: 768px) {
  .VideoListItem-youtube {
    grid-column-start: 1;
    grid-column-end: 3;
    grid-row-start: 4;
    grid-row-end: 4;
  }
}

.VideoListItem-niconico {
  display: block;
  grid-column-start: 3;
  grid-column-end: 5;
  grid-row-start: 4;
  grid-row-end: 4;
  border-top: solid 1px var(--c-main);
  border-left: solid 1px var(--c-main);
  border-bottom: solid 1px var(--c-main);
  background-color: var(--c-main-t);
  text-decoration: none;
  color: var(--c-main);
  font-weight: bold;
}
@media screen and (max-width: 768px) {
  .VideoListItem-niconico {
    grid-column-start: 3;
    grid-column-end: 5;
    grid-row-start: 4;
    grid-row-end: 4;
    border-right: solid 1px var(--c-main);
  }
}

.VideoListItem-data {
  display: block;
  grid-column-start: 5;
  grid-column-end: 7;
  grid-row-start: 4;
  grid-row-end: 4;
  border-top: solid 1px var(--c-main);
  border-left: solid 1px var(--c-main);
  border-bottom: solid 1px var(--c-main);
  border-right: solid 1px var(--c-main);
  color: var(--c-main);
}
a.VideoListItem-data {
  background-color: var(--c-main-t);
  text-decoration: none;
  font-weight: bold;
}
p.VideoListItem-data {
}
@media screen and (max-width: 768px) {
  .VideoListItem-data {
    grid-column-start: 1;
    grid-column-end: 5;
    grid-row-start: 6;
    grid-row-end: 6;
  }
}

.VideoList-cell {
  padding: 8px 16px;
}

.ContactList {
  margin-top: 16px;
}

.ContactList-contact:not(:first-of-type) {
  margin-top: 32px;
}

.ContactList-link {
  padding: 8px 0;
  font-size: 1.5em;
  color: var(--c-main);
  background-color: var(--c-main-t);
  text-decoration: none;
}

.ContactList-desc {
  margin-top: 8px;
}