.bili-channel {
  padding: 16px 0 14px;
  margin-bottom: 12px;
  min-width: 0;
  --channel-tabbar-h: 44px;
  --channel-panel-top: calc(var(--nav-h, 56px) + var(--channel-tabbar-h));
}
.bili-channel a {
  text-decoration: none;
  color: inherit;
}
.bili-channel__desk {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}
.bili-channel__icons {
  display: flex;
  align-items: center;
  gap: 14px;
  flex: 0 0 auto;
}
.bili-channel__ico {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--c-text-muted);
  font-size: 12px;
  min-width: 48px;
  transition: color var(--dur) var(--ease);
}
.bili-channel__ico:hover { color: var(--c-accent); }
.bili-channel__ico-bg {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}
.bili-channel__ico-svg {
  width: 22px;
  height: 22px;
  color: #fff;
}
.bili-channel__ico-bg--hot { background: var(--gradient-brand); }
.bili-channel__ico-bg--rank { background: linear-gradient(135deg, #ffa64d, #ff9212); }
.bili-channel__ico-bg--manga { background: linear-gradient(135deg, #7ad4a0, #59ca73); }
.bili-channel__ico-bg--art { background: linear-gradient(135deg, var(--c-link), var(--c-link-hover)); }
.bili-channel__ico-bg--topic { background: linear-gradient(135deg, #b39df0, #8a7ae0); }

.bili-channel__chips {
  flex: 1 1 auto;
  min-width: 0;
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  gap: 8px 10px;
  align-content: center;
}
.bili-channel__chip {
  height: 30px;
  min-width: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 10px;
  border-radius: 6px;
  border: 1px solid var(--c-border, #e3e5e7);
  background: var(--c-surface-2, #f6f7f8);
  color: var(--c-text-muted);
  font-size: 13px;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.bili-channel__chip:hover,
.bili-channel__chip.on {
  color: var(--c-accent);
  background: var(--c-surface, #fff);
  border-color: var(--c-border);
}

.bili-channel__more {
  flex: 0 0 auto;
  display: grid;
  grid-template-columns: repeat(3, auto);
  gap: 6px 12px;
  padding-left: 14px;
  border-left: 1px solid var(--c-border);
  align-content: center;
  justify-content: flex-end;
  justify-items: end;
  min-width: 0;
}
.bili-channel__more a {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  gap: 5px;
  height: 28px;
  min-width: 0;
  color: var(--c-text-muted);
  font-size: 13px;
  letter-spacing: 0.02em;
  white-space: nowrap;
}
.bili-channel__more-ico {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--c-text-muted);
  transition: color var(--dur) var(--ease);
}
.bili-channel__more a:hover .bili-channel__more-ico,
.bili-channel__more a.on .bili-channel__more-ico {
  color: var(--c-accent);
}
.bili-channel__more a:hover,
.bili-channel__more a.on { color: var(--c-accent); }
.bili-channel__ico.on { color: var(--c-accent); }

.bili-channel__mob { display: none; }
.bili-channel__tabbar {
  display: flex;
  align-items: stretch;
  position: relative;
  min-height: 44px;
  isolation: isolate;
}
.bili-channel__tabbar::after {
  content: none;
}
.bili-channel__tab-scroll {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: 0;
  overflow-x: auto;
  overflow-y: hidden;
  overscroll-behavior-x: contain;
  padding-right: 2px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
  scroll-snap-type: x proximity;
  touch-action: pan-x;
}
.bili-channel__tab-scroll.has-overflow:not(.is-scroll-end) {
  -webkit-mask-image: linear-gradient(
    to right,
    #000 0,
    #000 calc(100% - 12px),
    transparent 100%
  );
  mask-image: linear-gradient(
    to right,
    #000 0,
    #000 calc(100% - 12px),
    transparent 100%
  );
  -webkit-mask-size: 100% 100%;
  mask-size: 100% 100%;
  -webkit-mask-repeat: no-repeat;
  mask-repeat: no-repeat;
}
.bili-channel__tab-scroll::-webkit-scrollbar { display: none; }
.bili-channel__tab {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 15px;
  line-height: 1.2;
  color: var(--c-text-muted);
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  scroll-snap-align: start;
  touch-action: manipulation;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.bili-channel__tab.on {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
  font-weight: 500;
}
.bili-channel__tab-toggle {
  position: relative;
  flex: 0 0 32px;
  z-index: 3;
  width: 32px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 0;
  background: transparent;
  color: var(--c-text-muted);
  cursor: pointer;
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
  transition: color var(--dur) var(--ease);
}
.bili-channel__tab-toggle[aria-expanded="true"] {
  color: var(--c-accent);
}
.bili-channel__tab-toggle-ico {
  width: 18px;
  height: 18px;
  transition: transform var(--dur) var(--ease);
}
.bili-channel__tab-toggle[aria-expanded="true"] .bili-channel__tab-toggle-ico {
  transform: rotate(180deg);
}
.bili-channel__tab-panel {
  padding: 12px var(--gutter) 14px;
  border-top: 1px solid var(--c-border);
  background: var(--c-surface, #fff);
}
.bili-channel__tab-panel[hidden] { display: none !important; }
.bili-channel__overlay {
  display: none;
}
.bili-channel__overlay-backdrop {
  display: block;
  padding: 0;
  border: 0;
  margin: 0;
  cursor: default;
}
.bili-channel__panel-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 10px;
}
.bili-channel__panel-chip {
  min-height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 8px;
  border-radius: 6px;
  border: 1px solid var(--c-border, #e3e5e7);
  background: var(--c-surface-2, #f6f7f8);
  color: var(--c-text-muted);
  font-size: 13px;
  line-height: 1.2;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  touch-action: manipulation;
}
.bili-channel__panel-chip.on,
.bili-channel__panel-chip:hover {
  color: var(--c-accent);
  background: var(--c-surface, #fff);
  border-color: var(--c-border);
}
.bili-channel__panel-more {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px 6px;
  padding-top: 10px;
  border-top: 1px solid var(--c-border);
}
.bili-channel__panel-more a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 4px;
  min-height: 36px;
  font-size: 12px;
  color: var(--c-text-muted);
  touch-action: manipulation;
}
.bili-channel__panel-more a.on,
.bili-channel__panel-more a:hover { color: var(--c-accent); }
.bili-channel__panel-ico {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
  color: var(--c-text-muted);
}

.bili-channel--compact {
  padding: 12px 0 8px;
  margin-bottom: 8px;
  border-bottom: 1px solid var(--c-border);
}
.bili-channel--compact .bili-channel__ico-bg {
  width: 40px;
  height: 40px;
}
.bili-channel--compact .bili-channel__ico-svg {
  width: 20px;
  height: 20px;
}
.bili-channel--compact .bili-channel__ico { font-size: 12px; min-width: 48px; }
.bili-channel--compact .bili-channel__chips {
  gap: 8px;
}
.bili-channel--compact .bili-channel__chip {
  min-height: 32px;
  padding: 4px 12px;
  font-size: 13px;
}

@media (max-width: 1280px) {
  .bili-channel {
    padding: 0;
    margin-bottom: 0;
  }
  .bili-channel__overlay-backdrop {
    position: fixed;
    top: var(--channel-panel-top, 88px);
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.45);
    opacity: 0;
    transition: opacity 220ms var(--ease, ease);
  }
  .bili-channel__overlay .bili-channel__tab-panel {
    position: fixed;
    top: var(--channel-panel-top, 88px);
    left: 0;
    right: 0;
    z-index: 1;
    margin: 0;
    max-height: min(65vh, 400px);
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
    touch-action: pan-y;
    border-top: 1px solid var(--c-border);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0);
    opacity: 0;
    transform: translateY(-10px);
    transform-origin: top center;
    transition:
      opacity 220ms var(--ease, ease),
      transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
      box-shadow 280ms var(--ease, ease);
  }
  .bili-channel__overlay.is-open .bili-channel__overlay-backdrop {
    opacity: 1;
  }
  .bili-channel__overlay.is-open .bili-channel__tab-panel {
    opacity: 1;
    transform: translateY(0);
    box-shadow: 0 12px 32px rgba(15, 23, 42, 0.12);
  }
  .bili-channel__overlay.is-closing .bili-channel__overlay-backdrop {
    opacity: 0;
  }
  .bili-channel__overlay.is-closing .bili-channel__tab-panel {
    opacity: 0;
    transform: translateY(-6px);
    box-shadow: 0 4px 16px rgba(15, 23, 42, 0);
  }
  @keyframes bili-channel-chip-in {
    from {
      opacity: 0;
      transform: translateY(6px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip {
    animation: bili-channel-chip-in 240ms cubic-bezier(0.22, 1, 0.36, 1) backwards;
  }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(1) { animation-delay: 35ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(2) { animation-delay: 50ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(3) { animation-delay: 65ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(4) { animation-delay: 80ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(5) { animation-delay: 95ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(6) { animation-delay: 110ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(7) { animation-delay: 125ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(8) { animation-delay: 140ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(9) { animation-delay: 155ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(10) { animation-delay: 170ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(11) { animation-delay: 185ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip:nth-child(12) { animation-delay: 200ms; }
  .bili-channel__overlay.is-open .bili-channel__panel-more a {
    animation: bili-channel-chip-in 240ms cubic-bezier(0.22, 1, 0.36, 1) 220ms backwards;
  }
  @media (prefers-reduced-motion: reduce) {
    .bili-channel__overlay-backdrop,
    .bili-channel__overlay .bili-channel__tab-panel,
    .bili-channel__overlay.is-open .bili-channel__panel-grid .bili-channel__panel-chip,
    .bili-channel__overlay.is-open .bili-channel__panel-more a {
      animation: none !important;
      transition: none !important;
      transform: none !important;
      opacity: 1 !important;
    }
  }
  html.is-channel-panel-open,
  body.is-channel-panel-open {
    overscroll-behavior: none;
  }
  /* 展开后固定顶栏 + Tab 栏，避免滚动后 sticky 失效导致顶栏消失 */
  body.is-channel-panel-open .hd {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1100;
    width: 100%;
  }
  body.is-channel-panel-open .bili-channel.is-panel-open .bili-channel__tabbar {
    position: fixed;
    top: var(--nav-h, 56px);
    left: 0;
    right: 0;
    z-index: 1095;
    background: var(--c-surface, #fff);
    border-bottom: 1px solid var(--c-border);
  }
  .bili-channel__desk { display: none; }
  .bili-channel__mob {
    display: block;
    padding: 0;
  }
  .bili-channel__overlay {
    overscroll-behavior: none;
    touch-action: none;
    display: block;
    position: fixed;
    inset: 0;
    z-index: 900;
    pointer-events: none;
  }
  .bili-channel__overlay-backdrop,
  .bili-channel__overlay .bili-channel__tab-panel {
    pointer-events: auto;
  }
  .bili-channel__overlay[hidden] { display: none !important; }
}