:root {
  --bg: #0a0a0a;
  --bg-2: #111;
  --fg: #f4f4f4;
  --fg-2: #b8b8b8;
  --fg-3: #666;
  --line: #222;
  --gold: #c9a961;
  --gold-soft: #d9bf7d;
  --gold-deep: #8f7536;
  --gold-gradient: linear-gradient(135deg, #8f7536 0%, #d9bf7d 45%, #c9a961 100%);
  --max: 820px;
  --ease: cubic-bezier(.22,.9,.3,1);
  --header-h: 73px;
}
* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Hiragino Sans', sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.9;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; transition: opacity .3s var(--ease), color .3s var(--ease); }
.en { font-family: 'Oswald', sans-serif; letter-spacing: .05em; }

/* Header */
.header {
  position: fixed; top: 0; left: 0; right: 0;
  padding: 20px 40px;
  display: flex; justify-content: space-between; align-items: center;
  z-index: 100;
  background: rgba(10,10,10,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.logo {
  font-family: 'Oswald', sans-serif;
  font-weight: 700; font-size: 18px; letter-spacing: .15em;
  background: var(--gold-gradient);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
}
.header-back {
  font-family: 'Oswald', sans-serif;
  font-size: 12px; letter-spacing: .2em;
  color: var(--fg-2);
  display: inline-flex; align-items: center; gap: 10px;
}
.header-back:hover { color: var(--gold-soft); opacity: 1; }
.header-back span { transition: transform .3s var(--ease); }
.header-back:hover span { transform: translateX(-4px); }

/* Article */
.article {
  max-width: var(--max);
  margin: 0 auto;
  padding: calc(var(--header-h) + 80px) 24px 40px;
}
.article-meta {
  display: flex; align-items: center; gap: 16px;
  margin-bottom: 20px;
}
.article-date {
  font-family: 'Oswald', sans-serif;
  font-size: 14px; letter-spacing: .1em;
  color: var(--fg-2);
}
.article-cat {
  font-family: 'Oswald', sans-serif;
  font-size: 11px; letter-spacing: .2em;
  color: var(--gold);
  border: 1px solid var(--gold-deep);
  padding: 5px 16px;
}
.article-title {
  font-size: clamp(22px, 3.4vw, 32px);
  font-weight: 700;
  line-height: 1.6;
  letter-spacing: .03em;
  padding-bottom: 32px;
  border-bottom: 1px solid var(--line);
}
.article-body {
  padding: 40px 0 8px;
  font-size: 15px;
  color: var(--fg-2);
}
.article-body p { margin-bottom: 24px; }
.article-body p:last-child { margin-bottom: 0; }
.article-body strong { color: var(--fg); font-weight: 500; }
.article-note {
  font-size: 13px;
  color: var(--fg-3);
  border-left: 1px solid var(--gold-deep);
  padding-left: 16px;
}

/* Definition list (公演情報など) */
.article-dl {
  border-top: 1px solid var(--line);
  margin: 8px 0 32px;
}
.article-dl div {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 20px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}
.article-dl dt {
  font-family: 'Oswald', sans-serif;
  font-size: 12px; letter-spacing: .2em;
  color: var(--gold);
}
.article-dl dd { font-size: 15px; color: var(--fg); }

/* Links */
.article-links {
  display: flex; flex-wrap: wrap; gap: 10px;
  margin-top: 8px;
}
.article-link {
  font-family: 'Oswald', sans-serif;
  font-size: 11px; letter-spacing: .12em;
  color: var(--fg-2);
  border: 1px solid var(--line);
  padding: 6px 14px;
}
.article-link:hover { opacity: 1; color: var(--gold-soft); border-color: var(--gold-deep); }

/* Footer nav */
.article-foot {
  max-width: var(--max);
  margin: 0 auto;
  padding: 56px 24px 80px;
  border-top: 1px solid var(--line);
  display: flex; flex-wrap: wrap; gap: 16px 28px;
  align-items: center;
}
.article-foot a {
  font-family: 'Oswald', sans-serif;
  font-size: 12px; letter-spacing: .2em;
  color: var(--gold);
  display: inline-flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--gold-deep);
  padding-bottom: 6px;
}
.article-foot a:hover { opacity: 1; color: var(--gold-soft); }

.footer {
  padding: 40px 20px;
  border-top: 1px solid var(--line);
  text-align: center;
  background: var(--bg-2);
}
.footer-logo {
  font-family: 'Oswald', sans-serif;
  font-size: 15px; font-weight: 700; letter-spacing: .2em;
  background: var(--gold-gradient);
  -webkit-background-clip: text; background-clip: text;
  color: transparent;
  margin-bottom: 12px;
}
.footer-copy {
  font-family: 'Oswald', sans-serif;
  font-size: 10px; letter-spacing: .15em;
  color: var(--fg-3);
}

@media (max-width: 900px) {
  .header { padding: 16px 20px; }
  .article { padding: calc(var(--header-h) + 48px) 20px 32px; }
  .article-foot { padding: 40px 20px 64px; }
  .article-dl div { grid-template-columns: 1fr; gap: 6px; }
}