:root {
  --bg: #f4f4f2;
  --bg-2: #e9e9e7;
  --ink: #111112;
  --muted: #5a5a5f;
  --accent: #9ab7cc;
  --line: rgba(0, 0, 0, 0.08);
  --mono: "Space Grotesk", system-ui, -apple-system, sans-serif;
  --jp: "Zen Kaku Gothic New", "Hiragino Kaku Gothic ProN", sans-serif;
  --mincho: "Noto Serif JP", "Hiragino Mincho ProN", serif;
  --radius: 14px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: var(--jp);
  background: var(--bg);
  line-height: 1.8;
}

.bg {
  position: fixed;
  inset: 0;
  z-index: -2;
  background:
    radial-gradient(circle at 15% 20%, rgba(0, 0, 0, 0.06), transparent 45%),
    radial-gradient(circle at 80% 30%, rgba(0, 0, 0, 0.05), transparent 55%),
    linear-gradient(120deg, var(--bg), var(--bg-2));
}

.bg::after {
  content: "";
  position: absolute;
  inset: 0;
  opacity: 0.08;
  background-image:
    repeating-linear-gradient(
      45deg,
      rgba(0, 0, 0, 0.08) 0,
      rgba(0, 0, 0, 0.08) 1px,
      transparent 1px,
      transparent 6px
    );
}

.hero {
  position: relative;
  min-height: 100vh;
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 64px 20px 80px;
}

.hero-inner {
  width: min(960px, 100%);
  text-align: center;
  position: relative;
  z-index: 2;
}

main,
footer,
header {
  position: relative;
  z-index: 2;
}

.label {
  font-family: var(--mono);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 8px;
}

.label .en {
  font-size: 11px;
  margin-left: 8px;
  opacity: 0.7;
}

.title {
  margin: 0 0 12px;
  font-size: clamp(48px, 10vw, 132px);
  letter-spacing: 0.05em;
  font-weight: 700;
}

.catch {
  margin: 6px 0;
  font-size: clamp(16px, 2.2vw, 20px);
}

.catch.en {
  font-family: var(--mono);
  color: var(--muted);
}

.section {
  padding: 96px 20px;
  display: grid;
  gap: 32px;
  width: min(980px, 100%);
  margin: 0 auto;
}

.section-head {
  display: grid;
  gap: 6px;
}

.section-head h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 40px);
  letter-spacing: 0.06em;
}

.section-head .en,
.section-head .jp {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.25em;
  font-size: 11px;
  color: var(--muted);
}

.section-head .jp {
  font-family: var(--jp);
  text-transform: none;
  letter-spacing: 0.18em;
  font-size: 13px;
}

.section-body p {
  margin: 0 0 16px;
}

.links-note {
  font-size: 14px;
  color: var(--muted);
  margin-bottom: 20px;
}

.profile-media {
  width: min(176px, 60vw);
  aspect-ratio: 1 / 1;
  margin: 0 auto 24px;
  border-radius: 999px;
  overflow: hidden;
  border: 1px solid var(--line);
}

.profile-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.profile-en {
  margin-top: 24px;
  font-family: var(--mono);
  color: var(--muted);
  font-size: 14px;
}

.tags {
  margin-top: 20px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.tags span {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
}

.embed-wrap {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--line);
  background: #fff;
}

.note {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
}

.link-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 12px;
}

.link-grid a {
  text-decoration: none;
  color: var(--ink);
  border: 1px solid var(--line);
  padding: 14px 16px;
  border-radius: 12px;
  font-family: var(--mono);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 10px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.link-icon {
  width: 18px;
  height: 18px;
  display: block;
  flex: 0 0 auto;
  filter: grayscale(1) brightness(0);
}

.link-grid a:hover {
  background: rgba(0, 0, 0, 0.04);
  transform: translateY(-2px);
}

.footer {
  padding: 60px 20px 80px;
  text-align: center;
  font-family: var(--mono);
  color: var(--muted);
}

.footer p {
  margin: 6px 0;
}

.lyrics {
  position: fixed;
  inset: 0;
  pointer-events: none;
  overflow: hidden;
  z-index: 1;
}

.lyrics-layer {
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  bottom: 0;
  transform: translate3d(0, 0, 0) scale(var(--scale, 1));
  transform-origin: 50% 50%;
}

.lyric-item {
  position: absolute;
  font-family: var(--mincho);
  letter-spacing: 0.12em;
  white-space: nowrap;
  color: rgba(0, 0, 0, 0.3);
  will-change: transform;
}

.lyric-text {
  display: inline-block;
  animation: float-soft 16s ease-in-out infinite;
}

.lyrics-layer:nth-child(1) {
  top: 16%;
}

.lyrics-layer:nth-child(2) {
  top: 48%;
}

.lyrics-layer:nth-child(3) {
  top: 74%;
}

.lyric-text.float-a {
  animation-duration: 18s;
}

.lyric-text.float-b {
  animation-duration: 24s;
}

.lyric-text.float-c {
  animation-duration: 30s;
}

@keyframes float-soft {
  0% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
  50% {
    transform: translate3d(-6px, -10px, 0) rotate(0.6deg);
  }
  100% {
    transform: translate3d(0, 0, 0) rotate(0deg);
  }
}

.fade-up {
  opacity: 0;
  transform: translateY(18px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}

.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 768px) {
  .hero {
    padding-top: 88px;
  }

  .title {
    letter-spacing: 0.03em;
  }

  .section {
    padding: 72px 20px;
  }
}