:root {
  --ink: #253453;
  --muted: #66738e;
  --line: rgba(86, 111, 165, 0.18);
  --blue: #769be8;
  --lavender: #b9aee9;
  --surface: rgba(255, 255, 255, 0.78);
  --max: 1120px;
  --header-height: 68px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: calc(var(--header-height) + 18px); }
body {
  margin: 0;
  color: var(--ink);
  background: linear-gradient(145deg, #fff 0%, #f5fbff 44%, #f8f5ff 100%);
  font-family: "Segoe UI", "Yu Gothic UI", "Hiragino Sans", sans-serif;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
}
img { display: block; width: 100%; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: fixed; z-index: 100; top: 8px; left: 8px; padding: 8px 14px;
  background: #fff; transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: fixed; z-index: 20; inset: 0 0 auto;
  height: var(--header-height);
  background: rgba(255,255,255,.82);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(16px);
}
.nav-wrap {
  max-width: var(--max); height: 100%; margin: auto; padding: 0 18px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px;
}
.logo { font: 600 1.45rem/1 Georgia, serif; letter-spacing: -.03em; text-decoration: none; }
.nav-list {
  display: flex; gap: 18px; margin: 0; padding: 0; list-style: none;
}
.nav-list a {
  position: relative; padding: 22px 0 18px; color: var(--muted);
  font-size: .68rem; font-weight: 700; letter-spacing: .13em; text-decoration: none;
}
.nav-list a::after {
  content: ""; position: absolute; inset: auto 0 12px; height: 1px;
  background: var(--blue); transform: scaleX(0); transition: transform .2s ease;
}
.nav-list a:hover::after, .nav-list a:focus-visible::after, .nav-list a.active::after { transform: scaleX(1); }

.section { max-width: var(--max); margin: auto; padding: 84px 20px; }
.hero { max-width: 1440px; padding: calc(var(--header-height) + 18px) 18px 60px; }
.hero-image {
  position: relative; height: clamp(620px, calc(100svh - 104px), 820px); overflow: hidden;
  border-radius: 3px; background: linear-gradient(145deg, #bdeeff, #c8c2f2);
}
.hero-picture { position: absolute; inset: 0; display: block; }
.hero-picture img {
  width: 100%; height: 100%; object-fit: cover; object-position: 52% 40%;
}
.eyebrow { margin: 0 0 8px; font-size: .7rem; font-weight: 700; letter-spacing: .2em; text-transform: uppercase; }
h1 { margin: 0; font: 500 clamp(5rem, 17vw, 10rem)/.85 Georgia, serif; letter-spacing: -.08em; }
.tagline { margin: 24px 0 30px; font-family: Georgia, serif; font-size: clamp(1.1rem, 3vw, 1.4rem); }
.button {
  display: inline-flex; align-items: center; justify-content: center; gap: 26px;
  min-height: 50px; padding: 10px 22px; border: 1px solid currentColor;
  text-decoration: none; font-size: .78rem; font-weight: 700; letter-spacing: .08em;
  transition: background .2s, color .2s, transform .2s;
}
.button:hover { transform: translateY(-2px); }
.button-light { color: var(--ink); background: rgba(255,255,255,.9); border-color: white; }

.section-heading { display: flex; align-items: flex-start; gap: 20px; margin-bottom: 38px; }
.section-number { margin: 3px 0 0; color: var(--lavender); font: 400 1rem Georgia, serif; }
h2 { margin: 0; font: 500 clamp(2.8rem, 9vw, 5rem)/1 Georgia, serif; letter-spacing: -.05em; text-transform: lowercase; }
.music-grid { display: grid; gap: 34px; }
.content-status {
  margin: -20px 0 28px; color: var(--muted);
  font-size: .75rem; letter-spacing: .06em;
}
.content-status[hidden] { display: none; }
.music-card { min-width: 0; }
.cover {
  position: relative; aspect-ratio: 1; overflow: hidden;
  background: linear-gradient(135deg, #c8eff5, #cec5f1);
}
.cover img { height: 100%; object-fit: cover; transition: transform .45s ease; }
.music-card:hover .cover img { transform: scale(1.02); }
.track-number {
  position: absolute; inset: 14px auto auto 14px; display: grid; place-items: center;
  width: 34px; aspect-ratio: 1; border-radius: 50%; color: var(--ink);
  background: rgba(255,255,255,.88); font: 400 .75rem Georgia, serif;
}
.music-card h3 { margin: 18px 0 4px; font: 500 1.55rem Georgia, serif; }
.music-card p { min-height: 3.5em; margin: 0 0 18px; color: var(--muted); font-size: .9rem; }
.card-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.card-actions .button { flex: 1; gap: 10px; padding: 8px 14px; color: #425276; border-color: var(--line); }
.card-actions .button:hover { background: white; }

.about-section { max-width: var(--max); }
.about-layout { display: grid; gap: 36px; align-items: center; }
.about-visual { margin: 0; background: #eef8ff; overflow: hidden; border-radius: 2px; }
.about-visual img { width: 100%; height: auto; object-fit: contain; }
.about-copy { padding-block: 8px; }
.about-intro {
  margin: 0 0 20px; color: var(--muted);
  font: italic 400 clamp(1rem, 1.8vw, 1.15rem)/1.7 Georgia, serif;
  white-space: pre-line;
}
.about-en {
  margin: 0; font: 400 clamp(1.15rem, 2.2vw, 1.55rem)/1.85 Georgia, serif;
  white-space: pre-line;
}
.rule { width: 46px; height: 1px; margin: 24px 0; background: var(--lavender); }
.about-ja {
  margin: 0; color: var(--muted); font-size: 1rem; line-height: 2;
  white-space: pre-line;
}
.links-section { padding-bottom: 100px; }
.link-list { border-top: 1px solid var(--line); }
.social-link {
  display: grid; grid-template-columns: 1fr auto auto; align-items: center; gap: 20px;
  padding: 22px 4px; border-bottom: 1px solid var(--line); text-decoration: none;
  font: 500 1.35rem Georgia, serif; transition: padding .2s, background .2s;
}
.social-link:hover { padding-inline: 14px; background: rgba(255,255,255,.58); }
.social-link small { color: var(--muted); font: 400 .72rem "Segoe UI", sans-serif; letter-spacing: .08em; }
footer {
  max-width: var(--max); margin: auto; padding: 30px 20px 44px;
  display: flex; justify-content: space-between; border-top: 1px solid var(--line); color: var(--muted);
}
footer p { margin: 0; font-size: .75rem; }
.toast {
  position: fixed; z-index: 30; left: 50%; bottom: 24px; max-width: calc(100% - 32px);
  padding: 11px 18px; border-radius: 4px; color: white; background: #445273;
  box-shadow: 0 12px 30px rgba(38,53,86,.2); opacity: 0; pointer-events: none;
  transform: translate(-50%, 12px); transition: .2s; font-size: .82rem;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.notice { padding: 16px; background: #fff; }

@media (min-width: 700px) {
  .music-grid { grid-template-columns: repeat(3, 1fr); }
  .music-card:nth-child(2) { padding-top: 62px; }
  .music-card:nth-child(3) { padding-top: 124px; }
  .about-layout { grid-template-columns: minmax(0, 2fr) minmax(0, 3fr); gap: clamp(48px, 7vw, 88px); }
}
@media (min-width: 800px) {
  .hero-picture img { object-position: 60% center; }
}
@media (max-width: 799px) {
  .hero-image {
    height: calc(100svh - var(--header-height) - 28px);
    min-height: 520px;
    max-height: 900px;
  }
}
@media (orientation: landscape) and (max-height: 600px) {
  .hero-image {
    height: calc(100svh - var(--header-height) - 28px);
    min-height: 300px;
    max-height: none;
  }
  .hero-picture img { object-position: 60% 20%; }
}
@media (max-width: 480px) {
  :root { --header-height: 60px; }
  .nav-wrap { padding-inline: 14px; gap: 14px; }
  .nav-list { gap: 11px; }
  .nav-list a { font-size: .57rem; letter-spacing: .08em; }
  .hero { padding-inline: 10px; padding-bottom: 30px; }
  .section { padding: 64px 18px; }
  .music-grid { gap: 48px; }
  .social-link { padding-block: 19px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}