* { box-sizing: border-box; }
:root {
  color-scheme: light;
  --ink: #15151a;
  --muted: #686875;
  --line: #e5e5eb;
  --paper: #fbfbfd;
  --panel: #ffffff;
  --accent: #2b63ff;
}
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--paper);
  color: var(--ink);
}
a { color: inherit; text-decoration: none; }
code { font-size: 0.9em; overflow-wrap: anywhere; }
.site-hero {
  padding: 48px clamp(18px, 5vw, 72px) 28px;
  background: linear-gradient(135deg, #ffffff, #eef4ff);
  border-bottom: 1px solid var(--line);
}
.site-hero p:first-child {
  margin: 0 0 8px;
  color: var(--accent);
  font-weight: 700;
  letter-spacing: 0;
}
h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 4.4rem);
  line-height: 1.02;
  letter-spacing: 0;
}
h2 {
  margin-top: 34px;
  letter-spacing: 0;
}
.lede {
  max-width: 780px;
  color: var(--muted);
  font-size: 1.08rem;
  line-height: 1.65;
}
main {
  width: min(1180px, calc(100vw - 32px));
  margin: 0 auto;
}
.stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding: 20px 0;
}
.stats span {
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 8px 12px;
  border-radius: 999px;
  color: var(--muted);
}
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 18px;
  padding-bottom: 56px;
}
.card {
  display: grid;
  gap: 10px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 10px;
}
.card img {
  width: 100%;
  aspect-ratio: 16 / 9;
  object-fit: cover;
  background: #ececf1;
  border-radius: 6px;
}
.card strong {
  line-height: 1.25;
}
.card span,
.card small,
.hint,
.empty {
  color: var(--muted);
}
.card small {
  line-height: 1.45;
}
.topbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  padding: 14px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.92);
  position: sticky;
  top: 0;
  backdrop-filter: blur(12px);
  z-index: 2;
}
.topbar a { color: var(--accent); font-weight: 700; }
.video-page {
  max-width: 960px;
  padding-bottom: 72px;
}
.hero {
  padding-top: 24px;
}
video {
  width: 100%;
  max-height: 78vh;
  background: #111;
  border-radius: 8px;
  display: block;
}
.meta p {
  color: var(--muted);
}
.caption-stage {
  margin-top: 14px;
}
.current-caption {
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: clamp(14px, 3vw, 22px);
  min-height: 142px;
  box-shadow: 0 18px 48px rgba(24, 37, 68, 0.08);
}
.caption-empty {
  color: var(--muted);
  margin: 0;
}
.caption-time {
  color: var(--muted);
  font-variant-numeric: tabular-nums;
  font-size: 0.85rem;
  margin-bottom: 10px;
}
.caption-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  margin: 9px 0;
}
.caption-label {
  color: #fff;
  background: #15151a;
  border-radius: 999px;
  padding: 3px 8px;
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0;
  text-align: center;
}
.caption-ja .caption-label { background: #6f5cff; }
.caption-en .caption-label { background: #117c67; }
.caption-zh .caption-label { background: #d14f2f; }
.caption-source .caption-label { background: #434350; }
.caption-text {
  font-size: clamp(1.15rem, 2.2vw, 1.72rem);
  line-height: 1.72;
  font-weight: 680;
  letter-spacing: 0;
}
.tok {
  display: inline-block;
  margin: 0 0.01em;
}
.tok-kanji {
  color: #3757d6;
}
.tok-kana {
  color: #6f5cff;
}
.tok-zh {
  color: #d14f2f;
}
.tok-en {
  color: #117c67;
}
.tok-num {
  color: #986400;
}
.tok-punc {
  color: var(--muted);
}
ruby rt {
  font-size: 0.52em;
  font-weight: 700;
  color: #6f5cff;
}
details {
  margin-top: 18px;
  border: 1px solid var(--line);
  background: var(--panel);
  border-radius: 8px;
  padding: 12px 14px;
}
details li {
  margin: 8px 0;
}
@media (max-width: 700px) {
  .caption-row {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .topbar {
    display: block;
  }
}