* { box-sizing: border-box; }
*,
*::before,
*::after {
  animation: none !important;
  transition: none !important;
  scroll-behavior: auto !important;
}
:root {
  --bg: #fcfffd;
  --text: #152019;
  --muted: #5f6f66;
  --line: rgba(35, 69, 52, 0.14);
  --mint: rgba(219, 247, 235, 0.78);
  --mint-strong: rgba(208, 243, 229, 0.92);
  --blue: #0000ff;
}
html, body { height: 100%; }
body {
  margin: 0;
  font:
    16px/1.8
    -apple-system,
    BlinkMacSystemFont,
    "SF Pro Text",
    "PingFang TC",
    "PingFang SC",
    "Hiragino Sans",
    "Hiragino Kaku Gothic ProN",
    "Noto Sans TC",
    "Noto Sans SC",
    "Noto Sans JP",
    "Microsoft JhengHei",
    "Microsoft YaHei",
    system-ui,
    sans-serif;
  color: var(--text);
  background: var(--bg);
}
.page {
  max-width: 900px;
  margin: 0 auto;
  padding: 28px 22px 78px;
}
.hero {
  margin-bottom: 28px;
}
.hero-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}
.pack-chip {
  display: inline-block;
  font-size: 13px;
  color: #3e5a4e;
  padding: 0;
  border: none;
  background: transparent;
}
.page-title {
  margin: 0 0 6px;
  font-size: 30px;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: 0.01em;
}
.page-note {
  margin: 0 0 16px;
  color: var(--muted);
  font-size: 14px;
}
.media-block {
  display: grid;
  gap: 12px;
  margin-bottom: 8px;
}
.media-block img {
  display: block;
  width: 100%;
  max-height: 360px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid rgba(35, 69, 52, 0.1);
}
button,
.hero-audio-btn,
.ghost-btn,
#pack-drawer-toggle {
  border: 1px solid rgba(35, 65, 53, 0.22);
  background: rgba(255, 255, 255, 0.75);
  color: #274539;
  border-radius: 7px;
  padding: 1px 3px;
  font-size: 12px;
  line-height: 1.1;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: none;
  width: auto;
  max-width: max-content;
}

button:hover,
.hero-audio-btn:hover,
.ghost-btn:hover,
#pack-drawer-toggle:hover {
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}
.article {
  display: grid;
  gap: 20px;
}
.segment,
.article-block {
  display: grid;
  gap: 8px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}
.segment:last-child,
.article-block:last-child { border-bottom: none; }
.segment-title,
.article-subtitle {
  margin: 0 0 1px;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.ja,
.line-ja {
  margin: 0;
  white-space: pre-wrap;
  font-size: 18px;
  line-height: 1.78;
}
.zh,
.line-zh {
  margin: 0;
  white-space: pre-wrap;
  color: var(--blue);
  font-size: 16px;
  line-height: 1.72;
}
body.hide-translation .zh,
body.hide-translation .line-zh {
  display: none;
}
.ghost-btn {
  min-width: 18px;
  min-height: 18px;
}
.hero-audio-btn {
  min-width: 18px;
  min-height: 18px;
  place-self: start;
}
#pack-drawer-toggle {
  position: fixed;
  right: 16px;
  bottom: 14px;
  z-index: 10002;
  color: rgba(43, 96, 74, 0.9);
  font-size: 14px;
  opacity: 0.95;
}
#pack-mobile-drawer {
  position: fixed;
  right: 16px;
  bottom: 38px;
  width: 176px;
  max-height: 46vh;
  overflow: auto;
  z-index: 10001;
  padding: 7px;
  border: 1px solid rgba(43, 97, 75, 0.2);
  background: var(--mint);
  backdrop-filter: blur(8px);
  border-radius: 10px;
  box-shadow: 0 9px 26px rgba(18, 42, 32, 0.1);
  display: none;
}
#pack-mobile-drawer.is-open { display: block; }
#pack-mobile-drawer-list {
  display: grid;
  gap: 4px;
}
.pack-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 9px;
  border-radius: 8px;
  font-size: 13px;
  color: #234135;
  cursor: pointer;
  user-select: none;
}
.pack-item.active {
  background: rgba(255,255,255,0.7);
  font-weight: 600;
}
.pack-item .emoji,
.pack-item-prefix { width: 18px; text-align: center; }
@media (max-width: 720px) {
  .page {
    padding: 20px 16px 84px;
  }
  .page-title {
    font-size: 24px;
  }
  .line-ja { font-size: 17px; }
  .line-zh { font-size: 15px; }
  #pack-mobile-drawer {
    width: 154px;
    right: 12px;
    bottom: 36px;
  }
  #pack-drawer-toggle {
    right: 12px;
    bottom: 12px;
  }
}