@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@100..900&family=Zen+Kaku+Gothic+New:wght@300;400;500;700;900&display=swap");
* {
  margin: 0;
  padding: 0;
  text-decoration: none;
  border-radius: 0;
}

html {
  scroll-behavior: smooth;
  overflow-y: auto;
  overflow-x: hidden;
}

body {
  position: relative;
  display: block;
  width: 100vw;
  min-height: 100lvh;
  background-color: #000;
}
body::-webkit-scrollbar {
  display: none;
}

::-moz-selection {
  background-color: rgba(255, 255, 255, 0.1333333333);
}

::selection {
  background-color: rgba(255, 255, 255, 0.1333333333);
}

.main_background {
  position: fixed;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 100vw;
  height: 100lvh;
  z-index: -2;
  pointer-events: none;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}
.main_background img {
  width: 110%;
  height: 110%;
  -o-object-fit: cover;
     object-fit: cover;
  overflow: hidden;
}

.screen_blur_edges {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100lvh;
  pointer-events: none;
  z-index: 90;
}
.screen_blur_edges .edge_top,
.screen_blur_edges .edge_bottom {
  position: absolute;
  left: 0;
  width: 100%;
  height: 128px;
  backdrop-filter: blur(100px);
  -webkit-backdrop-filter: blur(100px);
}
.screen_blur_edges .edge_top {
  top: 0;
  -webkit-mask-image: linear-gradient(to bottom, #000 0%, transparent 100%);
  mask-image: linear-gradient(to bottom, #000 0%, transparent 100%);
}
.screen_blur_edges .edge_bottom {
  bottom: 0;
  -webkit-mask-image: linear-gradient(to top, #000 0%, transparent 100%);
  mask-image: linear-gradient(to top, #000 0%, transparent 100%);
}

header {
  position: fixed;
  right: 12px;
  top: 12px;
  z-index: 99;
  display: flex;
  align-items: center;
  width: min(100vw - 24px, 560px);
  height: 64px;
  border-radius: 36px;
  border: 1px solid rgba(255, 255, 255, 0.2666666667);
  backdrop-filter: blur(12px) brightness(80%);
  padding-inline: 12px;
  box-shadow: 0 0 28px -20px #fff;
  box-sizing: border-box;
}
header .header_logo {
  display: grid;
  place-items: center;
  height: 100%;
  padding-inline: 16px;
  transition: opacity 0.3s cubic-bezier(0, 1, 0.25, 1.05);
}
header .header_logo svg {
  display: block;
  fill: #fff;
  height: 70%;
}
header .header_nav {
  position: absolute;
  left: calc(100% - 56px);
  display: grid;
  place-items: center;
  margin-left: auto;
  height: 100%;
  transition: left 0.3s cubic-bezier(0, 1, 0.25, 1.05);
}
header .header_nav label.header_search {
  display: flex;
  align-items: center;
  width: 64px;
  height: 64px;
  cursor: pointer;
  overflow: hidden;
  transition: width 0.3s cubic-bezier(0, 1, 0.25, 1.05);
}
header .header_nav label.header_search svg {
  height: 25px;
  fill: #fff;
}
header .header_nav label.header_search input {
  position: absolute;
  display: block;
  left: 48px;
  top: 0;
  width: calc(100% - 32px);
  height: 100%;
  border: none;
  outline: none;
  background-color: transparent;
  padding-inline: 8px;
  font-size: 18px;
  font-family: "Montserrat", "Zen Kaku Gothic New", sans-serif;
  font-weight: 400;
  color: #fff;
  scale: 0 1;
  z-index: 9;
  transition: scale 0.3s cubic-bezier(0, 1, 0.25, 1.05);
}
header .header_nav label.header_search input::-moz-placeholder {
  color: rgba(255, 255, 255, 0.4666666667);
}
header .header_nav label.header_search input::placeholder {
  color: rgba(255, 255, 255, 0.4666666667);
}
header:has(input:focus) .header_logo {
  opacity: 0;
  pointer-events: none;
}
header:has(input:focus) .header_nav {
  width: 100%;
  left: 12px;
}
header:has(input:focus) .header_nav label.header_search {
  width: calc(100% - 32px);
}
header:has(input:focus) .header_nav label.header_search input {
  scale: 1 1;
}

main {
  position: relative;
  margin-top: 20lvh;
  min-height: 100lvh;
  box-sizing: border-box;
  padding-top: 30lvh;
}
main::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  backdrop-filter: blur(20px) brightness(50%);
  -webkit-mask-image: linear-gradient(to bottom, transparent 0lvh, #000 50lvh);
  mask-image: linear-gradient(to bottom, transparent 0lvh, #000 50lvh);
  z-index: -2;
}
main section {
  display: block;
  width: 100%;
  padding-inline: 64px;
  box-sizing: border-box;
  padding-bottom: 88px;
}
main section p.sec_ttl {
  position: sticky;
  top: 40px;
  display: block;
  font-size: 48px;
  font-family: "Brioso-Pro", serif;
  font-weight: 700;
  color: #fff;
  text-shadow: 0 0 12px #fff;
  z-index: 91;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}
main section p.phase_ttl {
  display: block;
  font-size: 32px;
  font-family: "Brioso-Pro", serif;
  font-weight: 700;
  color: #fff;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
  margin-top: 28px;
}
main section .sec_music {
  display: flex;
  gap: 12px;
  margin-left: 32px;
  overflow-x: auto;
  overflow-y: hidden;
  margin-top: 12px;
  padding-block: 4px;
  -webkit-mask-image: linear-gradient(to right, transparent 0%, #000 32px, #000 calc(100% - 32px), transparent 100%);
  mask-image: linear-gradient(to right, transparent 0%, #000 32px, #000 calc(100% - 32px), transparent 100%);
}
main section .sec_music::-webkit-scrollbar {
  height: 6px;
}
main section .sec_music::-webkit-scrollbar-thumb {
  background-color: rgba(255, 255, 255, 0.4666666667);
  border-radius: 10px;
  border: 2px solid transparent;
  background-clip: content-box;
  cursor: grab;
}
main section .sec_music::-webkit-scrollbar-thumb:hover {
  background-color: rgba(255, 255, 255, 0.6666666667);
}
main section .sec_music::-webkit-scrollbar-track {
  background-color: transparent;
}
main section .sec_music .content {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 286px;
  padding: 8px;
  border-radius: 8px;
  margin-inline: 8px;
  transition: background-color 0.2s ease;
}
main section .sec_music .content:hover::after {
  scale: 1;
  opacity: 1;
  transition: all 0.15s cubic-bezier(0, 1, 0.5, 2);
}
main section .sec_music .content::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 100%;
  height: 100%;
  background-color: rgba(255, 255, 255, 0.2);
  border-radius: 8px;
  scale: 0.9;
  opacity: 0;
  pointer-events: none;
  transition: all 0.15s ease;
  z-index: -1;
}
main section .sec_music .content img {
  display: block;
  aspect-ratio: 1;
  height: 64px;
  -o-object-fit: cover;
     object-fit: cover;
  border-radius: 4px;
  margin-inline: auto;
  -webkit-user-select: none;
     -moz-user-select: none;
          user-select: none;
}
main section .sec_music .content p.content_ttl {
  display: block;
  width: 214px;
  font-size: 20px;
  font-family: "Google Sans", "Montserrat", "Zen Kaku Gothic New", sans-serif;
  color: #fff;
  font-weight: 500;
  line-height: 1;
}
main section .sec_music .content .content_wrap {
  display: block;
  width: 214px;
}
main section .sec_music .content .content_wrap p.content_info {
  display: block;
  font-size: 14px;
  font-family: "Montserrat", "Zen Kaku Gothic New", sans-serif;
  color: rgba(255, 255, 255, 0.6666666667);
  font-weight: 500;
  line-height: 1;
  margin-top: 6px;
}
main section .sec_music .content_block {
  display: flex;
  flex-direction: column;
  gap: 12px;
  scroll-snap-align: start;
}
main section .sec_music .content_block:empty {
  display: none;
}

footer {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  width: 100vw;
  height: 100px;
  background-color: #006943;
}
footer p {
  display: block;
  font-family: "Montserrat", "Zen Kaku Gothic New", sans-serif;
  font-weight: 400;
  line-height: 1.6;
}
footer p.copyright {
  color: #fff;
  font-size: 14px;
}
footer p.copyright_tribute {
  color: rgba(255, 255, 255, 0.8);
  font-size: 12px;
}

@media (max-width: 1080px) {
  section {
    padding-inline: 16px !important;
  }
  section p.sec_ttl {
    font-size: 40px !important;
    top: 84px !important;
  }
  section p.phase_ttl {
    font-size: 28px !important;
  }
  section .sec_music {
    margin-left: 0 !important;
    scroll-snap-type: x mandatory;
  }
  section .sec_music .content {
    width: 256px !important;
  }
  section .sec_music .content img {
    height: 48px !important;
  }
  section .sec_music .content p.content_ttl {
    width: 200px !important;
    font-size: 18px !important;
  }
}