/* =========================================================
   まゆゆちゃんホームページ ― エレクトロスウィング（アールデコ×ネオン）
   配色: 黒 × 金 × 深紅 × クリーム
   ========================================================= */
:root {
  --bg: #0f0c0b;
  --bg2: #171110;
  --bg3: #211917;
  --line: rgba(212, 167, 74, 0.28);
  --cream: #f3e9d2;
  --cream-dim: #c9bda5;
  --gold: #d4a74a;
  --gold-light: #f2d78c;
  --gold-dark: #8c6a24;
  --crimson: #b4232c;
  --crimson-light: #e23a46;
  --font-display: "Limelight", "Kaisei Decol", serif;
  --font-head: "Kaisei Decol", "Hiragino Mincho ProN", serif;
  --font-body: "Zen Kaku Gothic New", "Hiragino Sans", "Noto Sans JP", sans-serif;
  --container: 1120px;
  --gutter: 20px;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  overflow-x: hidden;
}
img { max-width: 100%; height: auto; display: block; }
a { color: var(--gold-light); text-decoration: none; }
a:hover { color: #fff; }
h1, h2, h3, h4 { margin: 0; font-weight: 700; line-height: 1.3; }
p { margin: 0 0 1em; }
ul { margin: 0; padding: 0; list-style: none; }
.pc-only { display: none; }
.center { text-align: center; }
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--gutter); }
.skip { position: absolute; left: -999px; top: 0; background: var(--gold); color: #000; padding: 8px 12px; z-index: 100; }
.skip:focus { left: 8px; top: 8px; }

/* ---------- 共通部品 ---------- */
.btn {
  display: inline-block;
  padding: 12px 26px;
  border-radius: 2px;
  font-weight: 700;
  font-size: 15px;
  letter-spacing: 0.06em;
  border: 1.5px solid var(--gold);
  transition: background .2s, color .2s, transform .2s, box-shadow .2s;
}
.btn-gold {
  background: linear-gradient(180deg, var(--gold-light), var(--gold) 55%, var(--gold-dark));
  color: #1a1208;
  box-shadow: 0 0 0 1px #000 inset, 0 6px 18px rgba(212,167,74,.25);
}
.btn-gold:hover { color: #000; transform: translateY(-2px); box-shadow: 0 0 0 1px #000 inset, 0 10px 24px rgba(212,167,74,.4); }
.btn-line { background: transparent; color: var(--gold-light); }
.btn-line:hover { background: rgba(212,167,74,.12); color: #fff; transform: translateY(-2px); }
.text-link { font-weight: 700; border-bottom: 1px solid var(--gold); padding-bottom: 2px; }
.text-link::after { content: " →"; }
.brand-dot { color: var(--crimson-light); }

.section { padding: 72px 0; position: relative; }
.section-alt { background: var(--bg2); }
.section-title {
  text-align: center;
  margin-bottom: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
}
.section-en {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: 40px;
  letter-spacing: 0.06em;
  color: var(--gold);
  line-height: 1.1;
  text-shadow: 0 0 24px rgba(212,167,74,.35);
}
.section-ja {
  font-family: var(--font-head);
  font-size: 15px;
  color: var(--cream-dim);
  letter-spacing: 0.2em;
  position: relative;
  padding: 0 44px;
}
.section-ja::before, .section-ja::after {
  content: "";
  position: absolute;
  top: 50%;
  width: 32px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold));
}
.section-ja::before { left: 0; }
.section-ja::after { right: 0; transform: scaleX(-1); }
.section-lead { text-align: center; max-width: 720px; margin: 0 auto 40px; color: var(--cream-dim); }
.sub-title {
  font-family: var(--font-head);
  font-size: 22px;
  color: var(--gold-light);
  margin: 56px 0 20px;
  text-align: center;
  letter-spacing: .1em;
}
.note { color: var(--cream-dim); font-size: 14px; max-width: 720px; margin: 28px auto 0; text-align: center; }
.more-link { text-align: center; margin-top: 28px; }
.more-link a { border-bottom: 1px solid var(--line); }

/* ---------- ヘッダー ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--gutter);
  height: 60px;
  background: rgba(15,12,11,.88);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--line);
}
.brand { display: flex; align-items: center; gap: 10px; color: var(--cream); }
.brand-mark {
  width: 34px; height: 34px;
  display: grid; place-items: center;
  font-family: var(--font-display);
  font-size: 20px;
  color: #1a1208;
  background: linear-gradient(180deg, var(--gold-light), var(--gold-dark));
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
}
.brand-text { font-family: var(--font-display); font-size: 20px; letter-spacing: .08em; }
.nav-toggle {
  width: 44px; height: 44px;
  background: none; border: 0; padding: 10px;
  display: flex; flex-direction: column; justify-content: space-between;
  cursor: pointer;
}
.nav-toggle span { display: block; height: 2px; background: var(--gold); transition: transform .25s, opacity .25s; }
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(11px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-11px) rotate(-45deg); }
.nav {
  position: absolute;
  top: 60px; left: 0; right: 0;
  background: rgba(15,12,11,.97);
  border-bottom: 1px solid var(--line);
  display: none;
  flex-direction: column;
}
.nav.open { display: flex; }
.nav a {
  padding: 14px var(--gutter);
  font-family: var(--font-display);
  letter-spacing: .12em;
  font-size: 15px;
  color: var(--cream);
  border-top: 1px solid rgba(255,255,255,.04);
}
.nav a:hover { color: var(--gold-light); background: rgba(212,167,74,.06); }

/* ---------- ヒーロー ---------- */
.hero {
  position: relative;
  overflow: hidden;
  padding: 64px 0 0;
  background:
    radial-gradient(ellipse at 70% 30%, rgba(180,35,44,.35), transparent 55%),
    radial-gradient(ellipse at 20% 80%, rgba(212,167,74,.14), transparent 50%),
    var(--bg);
}
.hero-burst {
  position: absolute;
  inset: -40% -20%;
  background: repeating-conic-gradient(from 0deg at 72% 38%, rgba(212,167,74,.07) 0 4deg, transparent 4deg 12deg);
  mask-image: radial-gradient(circle at 72% 38%, #000 0, transparent 60%);
  -webkit-mask-image: radial-gradient(circle at 72% 38%, #000 0, transparent 60%);
  animation: burst-spin 120s linear infinite;
  pointer-events: none;
}
@keyframes burst-spin { to { transform: rotate(360deg); } }
.hero-inner {
  position: relative;
  width: 100%; max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--gutter) 56px;
  display: grid;
  gap: 40px;
}
.hero-kicker {
  font-family: var(--font-display);
  color: var(--gold);
  letter-spacing: .22em;
  font-size: 12px;
  text-transform: uppercase;
  margin-bottom: 14px;
}
.hero-title { display: flex; flex-direction: column; gap: 10px; margin-bottom: 22px; }
.hero-title-ja {
  font-family: var(--font-head);
  font-size: clamp(30px, 7.5vw, 48px);
  line-height: 1.25;
  color: var(--cream);
}
.hero-title-en {
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(44px, 12vw, 92px);
  line-height: 1;
  letter-spacing: .04em;
  color: var(--gold);
  text-shadow: 0 0 30px rgba(212,167,74,.45), 0 0 2px #fff3;
}
.hero-lead { color: var(--cream-dim); font-size: 15px; margin-bottom: 26px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; }

.hero-art { display: flex; flex-direction: column; align-items: center; }
.jacket-fan {
  position: relative;
  width: min(78vw, 340px);
  aspect-ratio: 1 / 1;
}
.jacket-fan img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  border: 1px solid var(--line);
  box-shadow: 0 20px 50px rgba(0,0,0,.65), 0 0 0 1px rgba(255,255,255,.04);
  transform-origin: 50% 110%;
}
.jacket-fan img:nth-child(1) { transform: rotate(-14deg) translateX(-10%); opacity: .55; }
.jacket-fan img:nth-child(2) { transform: rotate(-7deg) translateX(-5%); opacity: .7; }
.jacket-fan img:nth-child(3) { transform: rotate(7deg) translateX(5%); opacity: .85; }
.jacket-fan .jacket-main { transform: rotate(0); opacity: 1; box-shadow: 0 30px 60px rgba(0,0,0,.75), 0 0 40px rgba(226,58,70,.25); }
.hero-art-caption { margin-top: 24px; font-size: 13px; color: var(--cream-dim); letter-spacing: .1em; }

.marquee {
  position: relative;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, var(--bg3), var(--bg2), var(--bg3));
  overflow: hidden;
  padding: 10px 0;
}
.marquee-track { display: flex; width: max-content; animation: marquee 48s linear infinite; }
.marquee-track span {
  font-family: var(--font-head);
  color: var(--gold-light);
  font-size: 14px;
  letter-spacing: .14em;
  padding: 0 22px;
  white-space: nowrap;
  position: relative;
}
.marquee-track span::after {
  content: "◆";
  position: absolute; right: -6px; top: 0;
  color: var(--crimson-light);
  font-size: 9px;
  line-height: 26px;
}
@keyframes marquee { to { transform: translateX(-50%); } }
@media (prefers-reduced-motion: reduce) {
  .marquee-track, .hero-burst { animation: none; }
}

/* ---------- About ---------- */
.about-grid { display: grid; gap: 36px; }
.about-text p { color: var(--cream); }
.about-note {
  font-size: 13px;
  color: var(--cream-dim);
  border-left: 2px solid var(--gold);
  padding-left: 14px;
}
.stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px;
}
.stats li {
  border: 1px solid var(--line);
  background: var(--bg2);
  padding: 18px 12px;
  text-align: center;
  position: relative;
}
.stats li::before, .stats li::after {
  content: "";
  position: absolute; width: 10px; height: 10px;
  border-color: var(--gold); border-style: solid;
}
.stats li::before { top: 4px; left: 4px; border-width: 1px 0 0 1px; }
.stats li::after { bottom: 4px; right: 4px; border-width: 0 1px 1px 0; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 34px;
  color: var(--gold-light);
  line-height: 1.1;
}
.stat-num small { font-size: 18px; }
.stat-label { font-size: 12px; color: var(--cream-dim); letter-spacing: .14em; }

/* ---------- Music ---------- */
.album {
  display: grid;
  gap: 28px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--bg3), var(--bg));
  padding: 24px;
  position: relative;
}
.album::before {
  content: "";
  position: absolute; inset: 6px;
  border: 1px solid rgba(212,167,74,.14);
  pointer-events: none;
}
.album-art img { width: 100%; max-width: 360px; margin: 0 auto; box-shadow: 0 24px 50px rgba(0,0,0,.7); }
.album-kicker { font-family: var(--font-display); color: var(--crimson-light); letter-spacing: .2em; font-size: 12px; margin-bottom: 6px; }
.album-title { font-family: var(--font-head); font-size: 40px; color: var(--cream); margin-bottom: 6px; }
.album-meta { color: var(--gold-light); font-size: 14px; letter-spacing: .08em; }
.album-desc { color: var(--cream-dim); }
.album-links { display: flex; flex-wrap: wrap; gap: 10px; }
.album-links .btn { padding: 10px 18px; font-size: 14px; }

.player { margin: 28px auto 0; max-width: 720px; }
.player-load {
  position: relative;
  display: block;
  width: 100%;
  padding: 0;
  border: 1px solid var(--line);
  background: #000;
  cursor: pointer;
  aspect-ratio: 16 / 9;
  overflow: hidden;
}
.player-load img { width: 100%; height: 100%; object-fit: cover; opacity: .55; transition: opacity .2s, transform .4s; }
.player-load:hover img { opacity: .8; transform: scale(1.03); }
.player-play {
  position: absolute; left: 50%; top: 50%;
  transform: translate(-50%, -60%);
  width: 72px; height: 72px;
  border-radius: 50%;
  display: grid; place-items: center;
  background: var(--crimson);
  color: #fff;
  font-size: 26px;
  box-shadow: 0 0 0 6px rgba(180,35,44,.35), 0 10px 30px rgba(0,0,0,.6);
}
.player-text {
  position: absolute; left: 0; right: 0; bottom: 14px;
  text-align: center;
  color: var(--cream);
  font-size: 14px;
  letter-spacing: .06em;
  text-shadow: 0 2px 8px #000;
}
.player iframe { width: 100%; aspect-ratio: 16 / 9; border: 1px solid var(--line); display: block; }

.singles { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
.single { border: 1px solid var(--line); background: var(--bg3); overflow: hidden; }
.single-art { display: block; position: relative; }
.single img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; transition: transform .3s; }
.single-art:hover img { transform: scale(1.04); }
.single-badge {
  position: absolute; left: 0; top: 10px;
  background: var(--gold);
  color: #1a1208;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .08em;
  padding: 3px 8px 3px 10px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 6px) 50%, 100% 100%, 0 100%);
}
.sub-title small { font-size: 13px; color: var(--cream-dim); letter-spacing: .05em; }

/* 実績 */
.achievements {
  display: grid;
  gap: 12px;
  margin: 0 auto 36px;
  max-width: 920px;
}
.ach {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: center;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, rgba(212,167,74,.12), var(--bg3) 70%);
  padding: 14px 16px;
}
.ach-main { border-color: var(--gold); background: linear-gradient(135deg, rgba(212,167,74,.22), var(--bg3) 70%); }
.ach-num {
  font-family: var(--font-display);
  font-size: 34px;
  color: var(--gold-light);
  line-height: 1;
  min-width: 64px;
  text-align: center;
  text-shadow: 0 0 18px rgba(212,167,74,.4);
}
.ach-num small { font-size: 14px; display: block; letter-spacing: .1em; }
.ach-title { font-family: var(--font-head); font-size: 15px; color: var(--cream); margin: 0 0 2px; }
.ach-desc { font-size: 13px; color: var(--cream-dim); margin: 0; }
.single-body { padding: 12px 14px 14px; }
.single h4 { font-family: var(--font-head); font-size: 15px; color: var(--cream); margin-bottom: 4px; }
.single-meta { font-size: 12px; color: var(--gold-light); letter-spacing: .08em; margin-bottom: 8px; }
.single-links { display: flex; gap: 14px; font-size: 13px; margin: 0; }
.single-links a { border-bottom: 1px solid var(--line); }

/* ---------- 3D Models ---------- */
.goods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 32px;
}
.goods-grid a {
  display: block;
  position: relative;
  border: 1px solid var(--line);
  background: #fff;
  overflow: hidden;
  transition: transform .2s, box-shadow .2s;
}
.goods-grid a:hover { transform: translateY(-3px); box-shadow: 0 12px 24px rgba(0,0,0,.5), 0 0 0 1px var(--gold); }
.goods-grid img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.goods-grid span {
  display: block;
  padding: 6px 8px;
  background: var(--bg3);
  color: var(--cream);
  font-size: 12px;
  text-align: center;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ---------- Tools ---------- */
.tools { display: grid; gap: 20px; }
.tool { border: 1px solid var(--line); background: var(--bg3); display: grid; }
.tool-thumb { display: block; background: #fff; }
.tool-thumb img { width: 100%; aspect-ratio: 1 / 1; object-fit: cover; }
.tool-thumb-site { aspect-ratio: 1 / 1; display: grid; place-items: center; padding: 20px; }
.tool-thumb-sports { background: radial-gradient(circle at 30% 30%, #3a1210, #141414 70%); }
.tool-thumb-alarm { background: radial-gradient(circle at 30% 30%, #3b2c14, #17120c 70%); }
.site-card {
  display: grid; place-items: center; gap: 6px;
  width: 100%; height: 100%;
  border: 1px solid var(--line);
  outline: 1px solid rgba(212,167,74,.12);
  outline-offset: 6px;
  text-align: center;
}
.site-card-title { font-family: var(--font-head); font-size: 26px; color: var(--cream); }
.tool-thumb-sports .site-card-title { color: #e8342c; }
.site-card-sub { font-family: var(--font-display); font-size: 12px; letter-spacing: .3em; color: var(--gold); }
.tool-body { padding: 18px 18px 22px; }
.tool-kicker { font-family: var(--font-display); color: var(--crimson-light); font-size: 12px; letter-spacing: .18em; margin-bottom: 6px; }
.tool h3 { font-family: var(--font-head); font-size: 20px; color: var(--cream); margin-bottom: 8px; }
.tool p { color: var(--cream-dim); font-size: 14px; }

/* ---------- Events ---------- */
.groups { display: grid; gap: 14px; }
.group { border: 1px solid var(--line); background: var(--bg2); padding: 20px; }
.group-main { background: linear-gradient(135deg, rgba(180,35,44,.18), var(--bg2) 60%); border-color: rgba(226,58,70,.45); }
.group-dj { background: linear-gradient(135deg, rgba(212,167,74,.14), var(--bg2) 60%); border-color: rgba(212,167,74,.55); }
.group-dj .group-role { background: var(--gold); color: #1a1208; border-color: var(--gold); }
.group-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.group-role {
  font-family: var(--font-display);
  font-size: 11px;
  letter-spacing: .14em;
  padding: 3px 9px;
  border: 1px solid var(--gold);
  color: var(--gold-light);
}
.group h3 { font-family: var(--font-head); font-size: 20px; color: var(--cream); }
.group p { color: var(--cream-dim); font-size: 14px; margin-bottom: 8px; }
.group-links { display: flex; flex-wrap: wrap; gap: 8px 16px; margin: 0 !important; }
.group-links a { font-size: 14px; border-bottom: 1px solid var(--line); }

/* ---------- Links ---------- */
.links { display: grid; grid-template-columns: repeat(2, 1fr); gap: 10px; }
.links a {
  display: flex; flex-direction: column;
  padding: 14px 14px;
  border: 1px solid var(--line);
  background: var(--bg3);
  color: var(--cream);
  transition: border-color .2s, transform .2s;
}
.links a:hover { border-color: var(--gold); transform: translateY(-2px); }
.link-name { font-family: var(--font-display); font-size: 14px; letter-spacing: .08em; color: var(--gold-light); }
.link-id { font-size: 12px; color: var(--cream-dim); }

/* ---------- フッター ---------- */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 40px 0 48px;
  text-align: center;
  background: var(--bg);
}
.footer-brand { font-family: var(--font-display); font-size: 28px; color: var(--gold); margin-bottom: 6px; letter-spacing: .08em; }
.footer-copy { font-size: 13px; color: var(--cream-dim); margin-bottom: 4px; }
.footer-note { font-size: 12px; color: #7f7465; margin: 0; }

/* ---------- PC 幅 ---------- */
@media (min-width: 768px) {
  .pc-only { display: inline; }
  .section { padding: 96px 0; }
  .section-en { font-size: 52px; }
  .nav-toggle { display: none; }
  .nav { position: static; display: flex; flex-direction: row; background: none; border: 0; gap: 4px; }
  .nav a { padding: 8px 14px; border: 0; font-size: 14px; }
  .hero { padding-top: 88px; }
  .hero-inner { grid-template-columns: 1.1fr .9fr; align-items: center; gap: 48px; padding-bottom: 88px; }
  .hero-lead { font-size: 16px; }
  .jacket-fan { width: min(38vw, 400px); }
  .about-grid { grid-template-columns: 1.4fr 1fr; align-items: start; gap: 48px; }
  .stats { grid-template-columns: repeat(2, 1fr); }
  .album { grid-template-columns: 360px 1fr; align-items: center; padding: 36px; }
  .singles { grid-template-columns: repeat(4, 1fr); }
  .achievements { grid-template-columns: 1.3fr 1fr 1fr; }
  .goods-grid { grid-template-columns: repeat(6, 1fr); }
  .tools { grid-template-columns: repeat(3, 1fr); }
  .groups { grid-template-columns: repeat(2, 1fr); }
  .group-main { grid-column: 1 / -1; }
  .links { grid-template-columns: repeat(4, 1fr); }
}
@media (min-width: 1024px) {
  .goods-grid { gap: 14px; }
}