/* Match the main site's reading surfaces while keeping this article standalone. */
body {
  font-family: Arial, Helvetica, "Noto Sans TC", "Noto Sans JP", "Microsoft JhengHei", sans-serif;
  background: var(--canvas);
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: radial-gradient(ellipse at 0 0, #3b82f610, transparent 48%),
    radial-gradient(ellipse at 100% 35%, #b8ffff24, transparent 46%);
}
/* Standalone counterpart of src/components/Layout/Header.tsx. */
.site-header { position: relative; z-index: 50; background: #ffffffcc; border-bottom: 1px solid #f1f5f9; backdrop-filter: blur(12px); font-size: 16px; line-height: 1.5; }
.site-header a { text-decoration: none; }
.site-header button { border: 0; background: transparent; }
.site-header-inner { height: 64px; padding: 0 16px; display: flex; align-items: center; justify-content: space-between; gap: 12px; }
.site-header-left { display: flex; min-width: 0; align-items: center; gap: 32px; }
.site-brand { display: flex; flex-shrink: 0; align-items: center; gap: 12px; color: var(--text); }
.site-mark { display: inline-flex; align-items: center; justify-content: center; width: 44px; height: 44px; border-radius: 12px; background: #020617; color: #7affff; font-size: 18px; font-weight: 900; box-shadow: 0 1px 3px #0000001a; }
.site-brand-text { display: none; font-size: 16px; font-weight: 900; line-height: 1.25; letter-spacing: -.025em; }
.site-brand-text small { display: block; margin-top: 2px; color: #94a3b8; font-size: 12px; line-height: 16px; font-weight: 500; letter-spacing: normal; }
.site-nav { display: flex; align-items: center; gap: 2px; }
.site-nav-item { display: inline-flex; align-items: center; gap: 4px; padding: 8px 12px; border-radius: 8px; font-size: 14px; line-height: 20px; font-weight: 600; color: #64748b; transition: background-color .15s, color .15s; }
.site-nav-item:hover { background: #f8fafc; color: var(--text); }
.site-nav-item[aria-current] { color: var(--text); box-shadow: inset 0 -2px var(--brand); }
.site-chevron { width: 16px; height: 16px; transition: transform .15s; }
[aria-expanded="true"] > .site-chevron { transform: rotate(180deg); }
.site-about { display: inline-block; padding: 8px 14px; border-radius: 8px; background: white; font-size: 14px; line-height: 20px; font-weight: 600; color: var(--text); box-shadow: inset 0 0 0 1px #e2e8f0, 0 1px 3px #0000001a; }
.site-about:hover { background: #f8fafc; color: var(--text); }
.site-archive { position: relative; }
.site-archive-panel { position: absolute; left: 0; top: 100%; margin-top: 12px; width: 320px; max-width: calc(100vw - 32px); border-radius: 16px; background: white; box-shadow: 0 10px 15px -3px #0000001a, 0 4px 6px -4px #0000001a, 0 0 0 1px #e2e8f0; overflow: hidden; }
.site-archive-panel ul { display: flex; flex-direction: column; gap: 2px; margin: 0; padding: 8px; list-style: none; }
.site-archive-panel a { display: flex; gap: 12px; padding: 12px; border-radius: 12px; color: var(--text); }
.site-archive-panel a:hover { background: #f8fafc; }
.site-menu-icon { display: inline-flex; align-items: center; justify-content: center; flex-shrink: 0; width: 40px; height: 40px; border-radius: 8px; background: #e6ffff; color: #006a73; }
.site-menu-icon svg { width: 20px; height: 20px; }
.site-menu-copy { display: flex; min-width: 0; flex-direction: column; gap: 4px; font-size: 14px; line-height: 20px; font-weight: 600; }
.site-menu-copy small { display: -webkit-box; -webkit-box-orient: vertical; -webkit-line-clamp: 2; overflow: hidden; font-size: 14px; color: #64748b; font-weight: 400; }
.site-mobile-toggle { display: inline-flex; flex-shrink: 0; width: 40px; height: 40px; align-items: center; justify-content: center; padding: 0; border-radius: 8px; color: #334155; }
.site-mobile-toggle:hover { background: #f8fafc; }
.site-mobile-toggle svg { width: 20px; height: 20px; }
.site-menu-close, .site-mobile-toggle[aria-expanded="true"] .site-menu-open { display: none; }
.site-mobile-toggle[aria-expanded="true"] .site-menu-close { display: block; }
.site-mobile-menu { border-top: 1px solid #f1f5f9; background: white; }
.site-mobile-content { display: flex; flex-direction: column; gap: 4px; max-height: calc(100dvh - 64px - env(safe-area-inset-top)); overflow-y: auto; padding: 12px 16px; }
.site-mobile-menu .site-nav { flex-direction: column; align-items: stretch; }
.site-mobile-menu .site-nav-item { width: 100%; justify-content: flex-start; }
.site-mobile-menu button.site-nav-item { justify-content: space-between; }
.site-mobile-menu .site-archive-panel { position: static; width: auto; max-width: none; margin: 0 0 4px; }
.site-mobile-menu .site-about { margin-top: 8px; padding-block: 10px; text-align: center; }
.site-desktop { display: none; }
.skip-link { z-index: 60; }
@media (min-width: 640px) {
  .site-header-inner { padding-inline: 24px; }
  .site-mobile-content { padding-inline: 24px; }
}
@media (min-width: 1024px) {
  .site-header-inner { padding-inline: 32px; gap: 16px; }
  .site-desktop { display: flex; align-items: center; }
  .site-brand-text { display: block; }
  .site-mobile-toggle, .site-mobile-menu { display: none; }
}
@media (min-width: 1536px) { .site-header-inner { padding-inline: 48px; } }
.page-shell { width: min(100% - 48px, 800px); }
.breadcrumbs { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; padding-top: 24px; color: #64748b; font-size: 13px; }
.breadcrumbs a { min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; color: #64748b; }
.breadcrumbs a:hover { color: var(--link); }
.breadcrumbs [aria-current] { color: var(--secondary); }
.article-header { padding: 32px 0 24px; }
.article-header .song-name { margin: 18px 0 8px; font-size: 15px; }
h1 { font-size: clamp(32px, 5.5vw, 48px); line-height: 1.3; font-weight: 900; }
.article-subtitle { margin: 18px 0 0; font-size: clamp(20px, 3vw, 25px); font-weight: 700; line-height: 1.6; }
.deck { margin: 16px 0 0; font-size: 16px; line-height: 1.9; max-width: none; }
.article-contents { margin: 0 0 32px; border: 1px solid var(--border); border-radius: 16px; background: white; }
.article-contents summary { padding: 16px 20px; min-height: 52px; font-size: 14px; font-weight: 700; cursor: pointer; }
.article-contents summary span { margin-left: 12px; font-size: 12px; color: #64748b; font-weight: 400; }
.article-contents nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 4px 12px; padding: 0 16px 16px; }
.article-contents a { display: flex; align-items: center; min-height: 44px; padding: 8px; border-radius: 8px; font-size: 14px; line-height: 1.6; text-decoration: none; }
.article-contents a:hover { background: var(--brand-soft); }
.sound-card { border-radius: 24px; box-shadow: 0 1px 3px #0f172a08; }
.lyric-comparison { margin: 28px 0; }
.lyric-comparison > figcaption { margin-bottom: 12px; font-size: 15px; font-weight: 700; }
.lyric-comparison-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.lyric-comparison-grid > section { min-width: 0; padding: 20px; border: 1px solid var(--border); border-radius: 16px; background: var(--surface); }
.lyric-comparison h3 { margin: 0 0 18px; font-size: 15px; line-height: 1.6; }
.lyric-comparison ul { list-style: none; padding: 0; margin: 0; }
.lyric-comparison li + li { margin-top: 16px; }
.lyric-comparison li p { margin: 0; font-size: 16px; line-height: 1.8; overflow-wrap: anywhere; }
.lyric-comparison li .comparison-translation { margin-top: 3px; color: var(--secondary); font-size: 13px; }
.lyric-comparison .comparison-reading { margin: 20px 0 0; padding-top: 14px; border-top: 1px solid var(--border); color: var(--secondary); font-size: 13px; line-height: 1.8; }
.lyric-comparison .comparison-note { margin: 12px 0 0; color: var(--secondary); font-size: 12px; line-height: 1.8; }
.player-actions button { border-radius: 999px; }
footer { flex-wrap: wrap; align-items: center; gap: 12px 24px; }
footer a { min-height: 44px; display: inline-flex; align-items: center; text-decoration: none; font-size: 13px; }
@media (max-width: 600px) {
  .lyric-comparison-grid { grid-template-columns: 1fr; }
  .page-shell { width: calc(100% - 32px); }
  .breadcrumbs { padding-top: 12px; gap: 6px; font-size: 12px; }
  .article-header { padding: 24px 0; }
  .article-contents nav { grid-template-columns: 1fr; }
  .article-contents summary span { display: block; margin-left: 16px; margin-top: 3px; }
  .sound-card { padding: 20px 16px; border-radius: 20px; }
  footer > span { flex-basis: 100%; order: 1; }
}
@media print {
  .site-header, .breadcrumbs, .article-contents { display: none; }
  body::before { display: none; }
}