:root {
  --bg: #0f1923;
  --bg-2: #1a2733;
  --panel: #1b2733;
  --card: #16212c;
  --accent: #ff4655;
  --accent-dark: #c9303d;
  --text: #ece8e1;
  --text-dim: #8b978f;
  --line: #2a3742;
  --radius: 12px;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  padding-bottom: 120px;
  -webkit-font-smoothing: antialiased;
}

/* ---------- Hero ---------- */
.hero {
  background:
    radial-gradient(1200px 400px at 20% -10%, rgba(255,70,85,0.25), transparent 60%),
    linear-gradient(180deg, #11181f, #0f1923);
  border-bottom: 2px solid var(--accent);
  padding: 56px 20px 44px;
  text-align: center;
}
.hero-inner { max-width: 760px; margin: 0 auto; }
.brand {
  display: inline-block;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--accent);
  font-size: 14px;
  border: 1px solid var(--accent);
  padding: 4px 12px;
  border-radius: 4px;
  margin-bottom: 16px;
}
.hero h1 {
  font-size: 38px;
  font-weight: 800;
  letter-spacing: 1px;
  text-transform: uppercase;
}
.subtitle { color: var(--text-dim); margin-top: 10px; font-size: 16px; }
.demo-badge {
  display: inline-block;
  margin-top: 18px;
  background: rgba(255,70,85,0.12);
  color: var(--accent);
  border: 1px solid rgba(255,70,85,0.4);
  padding: 6px 14px;
  border-radius: 999px;
  font-size: 13px;
}

/* ---------- Layout ---------- */
.container { max-width: 1080px; margin: 0 auto; padding: 28px 20px; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}
.search {
  flex: 1 1 260px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 11px 14px;
  color: var(--text);
  font-size: 15px;
  outline: none;
}
.search:focus { border-color: var(--accent); }
.filters { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  background: var(--card);
  border: 1px solid var(--line);
  color: var(--text-dim);
  padding: 8px 14px;
  border-radius: 999px;
  cursor: pointer;
  font-size: 13px;
  transition: all .15s ease;
}
.chip:hover { color: var(--text); border-color: var(--text-dim); }
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }

/* ---------- Grid / Cards ---------- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 18px;
}
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: transform .15s ease, border-color .15s ease;
}
.card:hover { transform: translateY(-3px); border-color: var(--accent); }

.cover {
  position: relative;
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--c, #ff4655), #0f1923);
  display: flex;
  align-items: center;
  justify-content: center;
}
.cover-letter {
  font-size: 46px;
  font-weight: 800;
  color: rgba(255,255,255,0.92);
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
}
.cover-play {
  position: absolute;
  right: 12px;
  bottom: 12px;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: none;
  background: rgba(0,0,0,0.55);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: background .15s;
}
.cover-play:hover { background: var(--accent); }

.card-body { padding: 14px 16px 16px; }
.card-top { display: flex; justify-content: space-between; align-items: center; margin-bottom: 8px; }
.tag {
  background: rgba(255,70,85,0.15);
  color: var(--accent);
  font-size: 11px;
  padding: 3px 9px;
  border-radius: 4px;
  font-weight: 600;
}
.dur { color: var(--text-dim); font-size: 12px; }
.card-title { font-size: 17px; font-weight: 700; margin-bottom: 4px; }
.card-desc { color: var(--text-dim); font-size: 13px; min-height: 34px; }
.card-source { color: #5f6b73; font-size: 11px; margin-top: 6px; }

.card-actions { display: flex; gap: 8px; margin-top: 12px; }
.btn {
  flex: 1;
  border: 1px solid var(--line);
  background: var(--bg-2);
  color: var(--text);
  padding: 9px 10px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  transition: all .15s;
}
.btn:hover { border-color: var(--accent); color: #fff; }
.play-btn:hover { background: var(--accent); border-color: var(--accent); }
.dl-btn { font-weight: 600; }

.empty { grid-column: 1 / -1; text-align: center; color: var(--text-dim); padding: 60px 0; }

/* ---------- Integration note ---------- */
.integration {
  margin-top: 36px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 8px 18px;
}
.integration summary { cursor: pointer; padding: 12px 0; font-weight: 600; color: var(--text); }
.integration-body { padding: 6px 0 18px; color: var(--text-dim); font-size: 14px; }
.integration-body code { background: var(--bg-2); padding: 2px 6px; border-radius: 4px; color: var(--accent); }
.integration-body ol { margin: 10px 0 0 20px; }
.integration-body li { margin: 6px 0; }

/* ---------- Footer ---------- */
.site-footer {
  text-align: center;
  color: #5f6b73;
  font-size: 12px;
  padding: 30px 20px 10px;
  border-top: 1px solid var(--line);
  margin-top: 20px;
}

/* ---------- Player ---------- */
.player {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  background: rgba(20,30,40,0.97);
  border-top: 2px solid var(--accent);
  backdrop-filter: blur(10px);
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 22px;
  z-index: 50;
}
.player.hidden { display: none; }
.player-cover {
  width: 46px; height: 46px;
  border-radius: 8px;
  background: linear-gradient(135deg, var(--c, #ff4655), #0f1923);
  display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 20px; color: #fff;
  flex-shrink: 0;
}
.player-meta { min-width: 160px; max-width: 260px; flex-shrink: 0; }
.player-title { font-weight: 700; font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.player-sub { color: var(--text-dim); font-size: 12px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }

.player-play {
  width: 46px; height: 46px;
  border-radius: 50%;
  border: none;
  background: var(--accent);
  color: #fff;
  font-size: 16px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform .12s;
}
.player-play:hover { transform: scale(1.06); }

.player-progress { flex: 1; display: flex; align-items: center; gap: 10px; }
.player-progress .t { font-size: 12px; color: var(--text-dim); min-width: 38px; text-align: center; }
.seek { flex: 1; accent-color: var(--accent); cursor: pointer; }

.player-dl {
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  padding: 9px 16px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 13px;
  font-weight: 600;
  flex-shrink: 0;
  white-space: nowrap;
  transition: all .15s;
}
.player-dl:hover { background: var(--accent); color: #fff; }

@media (max-width: 640px) {
  .hero h1 { font-size: 28px; }
  .player-meta { display: none; }
  .player-progress .t { display: none; }
  .player-dl { padding: 9px 10px; }
}