body { background: #f8fafc; }
#slide-container > div > * { margin-top: auto; margin-bottom: auto; }
.slide-transition { transition: opacity 180ms ease-out; }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: #cbd5e1; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #4f46e5; }
@keyframes wordcloud-pop {
  0% { opacity: 0; filter: blur(4px); }
  100% { opacity: 1; filter: blur(0); }
}
.wordcloud-tag {
  animation: wordcloud-pop 0.4s ease-out both;
  cursor: default;
  transition: transform 0.3s ease;
  line-height: 1.2;
}
.wordcloud-tag:hover {
  filter: brightness(1.2);
}

/* ===== Cover Slide ===== */
.cover-slide {
  position: fixed;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #fff7f3 0%, #ffeee5 40%, #fff0e8 100%);
  overflow: hidden;
}
.cover-net {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0.85;
}
.cover-content {
  position: relative;
  z-index: 1;
  text-align: center;
  padding: 2rem;
}
.cover-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto 2rem;
  animation: cover-float 4s ease-in-out infinite;
}
@keyframes cover-float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}
.cover-title {
  font-size: clamp(2.5rem, 6vw, 5rem);
  font-weight: 800;
  color: #3d2215;
  letter-spacing: -0.02em;
  line-height: 1.15;
  text-shadow: none;
}
.cover-line {
  width: 80px;
  height: 3px;
  margin: 1.5rem auto 0;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #d97757, transparent);
  animation: cover-line-pulse 3s ease-in-out infinite;
}
@keyframes cover-line-pulse {
  0%, 100% { opacity: 0.5; width: 80px; }
  50% { opacity: 1; width: 120px; }
}