ai {
  display: block;
  --bg-main: linear-gradient(135deg, #fdfbf7 0%, #f0f9f4 100%);
  --bg-card: #ffffff;
  --text-main: #3a4a4a;
  --text-light: #6b7c7c;
  --accent-mint: #a8e6cf;
  --accent-sky: #b3d9ff;
  --accent-coral: #ffc4d0;
  --accent-green: #7ec97e;
  --shadow-sm: 0 2px 8px rgba(168, 230, 207, 0.15);
  --shadow-md: 0 4px 12px rgba(168, 230, 207, 0.25);
  --radius: 12px;
  max-width: 800px;
  margin: 0 auto;
  padding: 16px;
  background: var(--bg-main);
  color: var(--text-main);
  line-height: 1.7;
}
ai hd {
  display: block;
  background: linear-gradient(120deg, #a8e6cf 0%, #b3d9ff 50%, #ffc4d0 100%);
  background-size: 200% 100%;
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 14px;
  color: #2d3d3d;
  box-shadow: var(--shadow-sm);
  margin-bottom: 14px;
  position: relative;
  overflow: hidden;
}
ai hd::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,255,255,0.4) 0%, transparent 70%);
  animation: shimmer 8s ease-in-out infinite;
}
@keyframes shimmer {
  0%, 100% { transform: translate(-25%, -25%); }
  50% { transform: translate(0, 0); }
}
ai article {
  display: block;
  background: var(--bg-card);
  padding: 18px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  margin-bottom: 14px;
  transition: all 0.3s ease;
  border-left: 3px solid var(--accent-mint);
}
ai article:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}
ai article p {
  margin: 0 0 12px 0;
}
ai article p:last-child {
  margin-bottom: 0;
}
ai details {
  background: var(--bg-card);
  border-radius: var(--radius);
  margin-bottom: 10px;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: all 0.3s ease;
}
ai details:hover {
  box-shadow: var(--shadow-md);
}
ai details[open] {
  box-shadow: var(--shadow-md);
}
ai summary {
  padding: 11px 14px;
  cursor: pointer;
  background: linear-gradient(90deg, rgba(168,230,207,0.1) 0%, rgba(179,217,255,0.1) 100%);
  font-weight: 500;
  user-select: none;
  transition: background 0.2s ease;
  position: relative;
  padding-left: 32px;
}
ai summary::before {
  content: '';
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-mint), var(--accent-sky));
}
ai summary:hover {
  background: linear-gradient(90deg, rgba(168,230,207,0.2) 0%, rgba(179,217,255,0.2) 100%);
}
ai details[open] summary {
  border-bottom: 1px solid rgba(168,230,207,0.3);
  margin-bottom: 8px;
}
ai p {
  margin: 8px 14px;
  font-size: 14px;
}
ai p[t]::before {
  content: attr(t);
  display: inline-block;
  background: linear-gradient(120deg, var(--accent-mint), var(--accent-sky));
  color: #2d3d3d;
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 12px;
  margin-right: 8px;
  font-weight: 500;
}
ai f {
  font-weight: 600;
  color: var(--accent-green);
  display: inline-block;
  margin-right: 6px;
}
ai d {
  display: block;
  padding: 4px 0;
  color: var(--text-light);
}
ai hr {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent-mint), transparent);
  margin: 10px 0;
  opacity: 0.5;
}
@media (max-width: 600px) {
  ai {
    padding: 12px;
  }
  ai hd {
    font-size: 13px;
    padding: 9px 12px;
  }
  ai article {
    padding: 14px;
  }
  ai summary {
    font-size: 14px;
    padding: 10px 12px 10px 28px;
  }
  ai summary::before {
    left: 10px;
  }
  ai p {
    font-size: 13px;
    margin: 6px 12px;
  }
}