:root{
  --pink:#ef3a58;
  --pink2:#ff6680;
  --pale:#fff1f3;
  --text:#333;
  --max:1200px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth;scroll-padding-top:20px}
body{
  margin:0;
  color:var(--text);
  background:#fff;
  font-family:"Noto Sans JP","Yu Gothic",sans-serif;
}
body.menu-open{overflow:hidden}

img{max-width:100%;display:block}
a{color:inherit;text-decoration:none}
.container{width:min(1200px,92%);margin:auto}
.section{padding:70px 0}
.section-title{
  width:min(1000px,90%);
  margin:0 auto 38px;
  padding:10px 20px;
  color:#fff;
  text-align:center;
  font-size:clamp(20px,2.2vw,30px);
  letter-spacing:.12em;
  font-weight:700;
  background:linear-gradient(90deg,#fff,var(--pink) 13%,var(--pink) 87%,#fff);
}
.section-title small{display:block;font-size:.42em;letter-spacing:.16em;margin-top:3px}
.hero {
  position: relative;
  width: 100%; margin-bottom: 0;aspect-ratio: 1920 / 500;
}

.hero-picture {
  display: block;
  width: 100%;
  line-height: 0;
}

.hero-bg {
  display: block;
  width: 100%;
  height: auto;
}
@media (max-width: 768px) {
  .hero {
width: 100%; height: 100% !important;
    aspect-ratio: 1536 / 1280;
  }
}

.menu{
  position:fixed;top:16px;right:20px;z-index:1100;
  display:flex;align-items:center;gap:9px;
  border:0;background:var(--pink);color:#fff;border-radius:30px;
  padding:8px 15px;font-weight:700;box-shadow:0 3px 8px #0002;
  cursor:pointer;
}
.menu-label{font-size:13px;letter-spacing:.08em;text-transform:uppercase}
.hamburger{width:20px;height:16px;display:flex;flex-direction:column;justify-content:space-between}
.hamburger i{display:block;height:2px;width:100%;background:#fff;border-radius:2px;transition:transform .25s,opacity .2s}
.menu[aria-expanded="true"] .hamburger i:nth-child(1){transform:translateY(7px) rotate(45deg)}
.menu[aria-expanded="true"] .hamburger i:nth-child(2){opacity:0}
.menu[aria-expanded="true"] .hamburger i:nth-child(3){transform:translateY(-7px) rotate(-45deg)}
.site-menu{
  position:fixed;inset:0;z-index:1000;
  display:flex;justify-content:flex-end;
  background:#0000;
  visibility:hidden;opacity:0;
  transition:visibility .25s,opacity .25s,background .25s;
}
.site-menu::before{content:"";position:absolute;inset:0;background:#0008;opacity:0;transition:opacity .25s}
.site-menu-inner{
  position:relative;width:min(430px,88vw);height:100%;
  padding:86px 34px 40px;
  background:linear-gradient(160deg,#fff 0%,#fff8fa 100%);
  box-shadow:-8px 0 30px #0002;
  transform:translateX(100%);transition:transform .3s ease;
  overflow-y:auto;
}
.site-menu.is-open{visibility:visible;opacity:1}
.site-menu.is-open::before{opacity:1}
.site-menu.is-open .site-menu-inner{transform:translateX(0)}

.menu-heading{
  margin:0 0 25px;color:var(--pink);font-size:12px;font-weight:800;
  letter-spacing:.3em;border-bottom:2px solid #f5c4cc;padding-bottom:12px;
}
.site-menu nav{display:flex;flex-direction:column}
.site-menu nav a{
  display:flex;align-items:center;gap:14px;
  padding:17px 4px;border-bottom:1px solid #f1dfe2;
  color:#333;font-size:16px;font-weight:700;line-height:1.4;
  transition:color .2s,padding-left .2s;
}
.site-menu nav a:hover,.site-menu nav a:focus-visible{color:var(--pink);padding-left:10px}
.site-menu nav a span{
  flex:0 0 34px;color:var(--pink);font-size:11px;font-weight:800;letter-spacing:.05em;
}
.hero-copy{width:50%;position: absolute;text-align:center;margin-right:4%;}
.hero-copy h1 {
  position: static;
  width: auto;
  margin: 0 0 15px;
  font-size: clamp(42px, 5vw, 78px);
  color: var(--pink);
  text-shadow:
    0 3px 0 #fff,
    0 0 10px #fff;
}

.hero-copy p {
  margin: 0;
  font-weight: 700;
  font-size: clamp(18px, 2vw, 30px);
  line-height: 1.5;
}
.hero-copy .date {
  display: inline;
  background: linear-gradient(
    transparent 55%,
    #fff19a 55%,
    #fff19a 100%
  );
  padding: 0 4px;
  font-weight: 700;
}
.cta-wrap{text-align:center;padding:34px 0 10px}

.cta {
  display: inline-block;
  min-width: 380px;
  padding: 12px 30px;
  border-radius: 40px;
  background: var(--pink);
  color: #fff;
  font-size: 20px;
  font-weight: 700;
  box-shadow: 0 4px 0 #f6b3be;
  transition: background 0.3s ease, transform 0.2s ease;
  box-shadow .3s ease;
}

.cta:hover {color: #4e2b0e;
  background: linear-gradient(
    90deg,
    #ff4d6d,
    #ff9f43,
    #ffe66d,
    #7bed9f,
    #70a1ff,
    #a55eea,
    #ff6b9a
  );
background-size: 200% 100%;
  animation: rainbowMove 3s linear infinite;
}


@keyframes rainbowMove {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: -100% 50%;
  }
}

.music-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,200px));
  gap:24px;
  justify-content:center;
}
.music-card{
  width:200px;
  min-height:400px;
  display:flex;
  flex-direction:column;
  background:#fff;
  border:2px solid #ffd6de;
  border-radius:10px;
  overflow:hidden;
  box-shadow:0 4px 14px #ef3a5830;
}
.cover-wrap{padding:7px;background:#fff}
.cover-wrap img{width:100%;aspect-ratio:1/1;object-fit:cover;border-radius:3px}
.card-body{display:flex;flex:1;flex-direction:column;padding:8px 9px 10px}
.card-body h3{font-size:14px;line-height:1.35;margin:0 0 5px;color:#333}
.coupling{font-size:11px;line-height:1.3;margin:0 0 7px;color:#666;min-height:28px}
dl{margin:0;font-size:14px}
dl>div{display:flex;border-top:1px solid #eee;padding:3px 0}
dt{width:45%;color:#ef3a58;font-weight:700}
dd{width:55%;margin:0}


h3.music-title.short {
  font-size: clamp(1.125rem, 0.989rem + 0.68vw, 1.5rem); color: #4e2b0e;
}
h3.music-title.long {
  font-size: clamp(1rem, 0.955rem + 0.23vw, 1.125rem); color: #4e2b0e;
}

.card-buttons{margin-top:auto;padding-top:8px;display:flex;flex-direction:column;gap:5px}
.music-btn{
  display:block;text-align:center;border-radius:20px;padding:5px 4px;
  font-size:14px;font-weight:700;color:#fff;background:var(--pink);
letter-spacing: 2px;border: 3px #fff solid;box-shadow:0 4px 14px #ef3a5830;
}
.music-btn {
  display: block;
  text-align: center;
  border-radius: 20px;
  padding: 5px 4px;
  font-size: 14px;
  font-weight: 700;
  color: #fff;
  background: var(--pink);
  letter-spacing: 2px;
  border: 3px #fff solid;
  box-shadow: 0 4px 14px #ef3a5830;

  transition: box-shadow .3s ease;
}

.music-btn:hover {
  background: linear-gradient(
    90deg,
    #ef3a58,
    #a92c41,
    #ef3a58
  );
  background-size: 200% 100%;
  animation: detailGradient 2s linear infinite;
}

@keyframes detailGradient {
  0% {
    background-position: 100% 50%;
  }
  100% {
    background-position: -100% 50%;
  }
}
.stream-btn{background:#ff7890}
.info-box{width:min(800px,92%);margin:auto;border-radius:12px;box-shadow:0 4px 20px #ef3a5820;overflow:hidden}
.info-item{border-bottom:1px solid #f7d8dd;background:#fff}
.info-item:last-child{border-bottom:0}
.info-toggle{
  width:100%;display:grid;grid-template-columns:100px 85px 1fr 30px;
  align-items:center;gap:12px;border:0;background:#fff;padding:14px 18px;text-align:left;cursor:pointer;font-family: inherit;
}
.info-date{color:var(--pink);font-weight:800;text-align:center;line-height:1.05}
.info-date strong{display:block;font-size:24px}
.badge{background:var(--pink);color:#fff;border-radius:20px;padding:5px 10px;text-align:center;font-size:11px;font-weight: bold;}
.info-title{font-size:clamp(1rem, 0.864rem + 0.68vw, 1.375rem);
font-family: inherit;
  font-weight: 400;}
.plus{color:var(--pink);font-size:20px;text-align:center}
.info-content{padding:0 24px 18px 197px;font-size:clamp(1rem, 0.955rem + 0.23vw, 1.125rem);font-family: inherit;
  font-weight: 400;
line-height:1.8;  
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  padding-top: 0;
  padding-bottom: 0;
  transition:
    max-height 0.5s ease,
    opacity 0.3s ease,
    padding 0.5s ease;
}
.info-item.open .info-content{   max-height: 500px;
  opacity: 1;
  padding-top: 15px;
  padding-bottom: 15px;}
.info-item.open .plus{transform:rotate(45deg)}
.movie-box{
  width:min(900px,92%);
  margin:auto;
  padding:50px;
  border-radius:20px;
  background:#fff0f2 url("../images/movie-bg.jpg") center/cover;
}
.youtube-frame{
  background:#fff;padding:8px;box-shadow:0 3px 15px #0002;border-radius:5px;
}
.youtube-frame iframe{display:block;width:100%;aspect-ratio:16/9;border:0}
.profile{
  width:min(900px,92%);margin:auto;display:grid;grid-template-columns:1fr 1fr;
  gap:50px;align-items:center
}
.profile h2{color:var(--pink);font-size:32px;letter-spacing:.12em}
.profile dl > div {
  display: flex;
  border-top: none;
  padding: 3px 0;
}
.profile dl{font-size:clamp(1rem, 0.955rem + 0.23vw, 1.125rem);}
.profile dt{width:90px}
.profile dd{  flex: 1;
  width: auto;
  margin: 0;border-bottom: 2px solid #fee8e8;}

.profile-photo{padding:10px;background:#fff}

.profile dt span{font-size:60%; padding: 5px 10px; background-color: #fee8e8; border-radius: 20px;}

.instagram-link {
  display: inline-block;
  width: 32px;
  height: 32px;
}

.instagram-link img {
  display: block;
  width: 100%;
  height: 100%;
  filter: invert(31%) sepia(75%) saturate(2500%) hue-rotate(320deg)
          brightness(100%) contrast(90%);
  transition: filter .3s ease, transform .2s ease;
}
footer{text-align:center;padding:40px;background:#fff5f6;color:#777;font-size:12px}

@media(max-width:900px){
  .music-grid{grid-template-columns:repeat(3,200px)}
}
@media(max-width:700px){
  .section{padding:48px 0}
  .hero,.hero-inner{min-height:360px;height:360px}
  .hero-copy{width:58%;margin-right:1%}
  .hero-copy h1{font-size:36px}
  .hero-copy p{font-size:15px}
  .menu{top:8px;right:10px;padding:6px 11px}
  .menu-label{font-size:11px}
  .hamburger{width:17px;height:14px}
  .site-menu-inner{width:min(390px,90vw);padding:78px 25px 30px}
  .site-menu nav a{font-size:14px;padding:15px 3px}
  .cta{min-width:70%;font-size:16px}
  .music-grid{grid-template-columns:repeat(2,200px);gap:14px}
  .info-toggle{grid-template-columns:60px 65px 1fr 20px;gap:7px;padding:10px}
  .info-date strong{font-size:19px}
  .info-content{padding:0 15px 15px 77px;}
  .movie-box{padding:15px}
  .profile{grid-template-columns:1fr;gap:25px}
  .profile h2{font-size:26px}
}
@media(max-width:440px){
  .hero,.hero-inner{min-height:250px;height:250px}
  .hero-copy{width:60%}
  .hero-copy h1{font-size:28px}
  .hero-copy p{font-size:11px}
  .music-grid{grid-template-columns:repeat(2,1fr);padding:0 8px}
  .music-card{width:100%;min-width:0;min-height:380px}
  .info-toggle{grid-template-columns:50px 58px 1fr 16px}
}