.ai-left .ai-message-box {
  --md-text: #1a1a1a;
  --md-muted: #5c5c66;
  --md-accent: #66b1ff;
  --md-border: #e8e8ed;
  --md-code-bg: #f4f4f8;
  --md-quote-bg: #f0f7ff;

  color: var(--md-text);
  font-size: 14px;
  line-height: 1.6;
  letter-spacing: 0.02em;
  word-break: break-word;
}

.ai-left .ai-message-box > *:first-child {
  margin-top: 0 !important;
}

.ai-left .ai-message-box > *:last-child {
  margin-bottom: 0 !important;
}

.ai-left .ai-message-box h1 {
  margin: 0 0 15px;
  padding-bottom: 16px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  color: #0f172a;
  border-bottom: 2px solid var(--md-accent);
}

.ai-left .ai-message-box h2 {
  margin: 15px 0 20px;
  padding-left: 16px;
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  color: #111827;
  border-left: 6px solid var(--md-accent);
  background: linear-gradient(
    90deg,
    rgba(37, 99, 235, 0.06) 0%,
    transparent 100%
  );
}

.ai-left .ai-message-box h3 {
  margin: 15px 0 16px;
  padding-left: 12px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.45;
  color: #1e293b;
  border-left: 4px solid #93c5fd;
}

.ai-left .ai-message-box h4 {
  margin: 15px 0 12px;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: #334155;
}

.ai-left .ai-message-box h5,
.ai-left .ai-message-box h6 {
  margin: 15px 0 10px;
  font-size: 14px;
  font-weight: 600;
  color: #475569;
}

.ai-left .ai-message-box p {
  margin: 0 0 15px;
  color: var(--md-text);
}

.ai-left .ai-message-box a {
  color: var(--md-accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(37, 99, 235, 0.35);
}

.ai-left .ai-message-box strong,
.ai-left .ai-message-box b {
  font-weight: 700;
  color: #0f172a;
}

.ai-left .ai-message-box em,
.ai-left .ai-message-box i {
  font-style: italic;
  color: #334155;
}

.ai-left .ai-message-box ul,
.ai-left .ai-message-box ol {
  margin: 0 0 15px;
  padding-left: 10px;
  color: var(--md-muted);
  font-size: 14px;
  line-height: 1.55;
}

.ai-left .ai-message-box ul {
  list-style: none;
}

.ai-left .ai-message-box ul > li {
  position: relative;
  margin-bottom: 10px;
}

.ai-left .ai-message-box ul > li::before {
  content: "";
  position: absolute;
  left: -10px;
  top: 9px;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--md-accent);
  opacity: 0.85;
}

.ai-left .ai-message-box ul ul > li::before {
  background: #94a3b8;
  width: 6px;
  height: 6px;
  top: 9px;
}

.ai-left .ai-message-box ol {
  list-style: decimal;
  padding-left: 30px;
}

.ai-left .ai-message-box ol > li {
  margin-bottom: 10px;
  padding-left: 8px;
}

.ai-left .ai-message-box li > p {
  margin-bottom: 8px;
}

.ai-left .ai-message-box blockquote {
  margin: 15px 0;
  padding: 12px 15px 12px 18px;
  border-left: 6px solid #60a5fa;
  border-radius: 0 8px 8px 0;
  background: var(--md-quote-bg);
  color: #475569;
  font-size: 14px;
  line-height: 1.55;
}

.ai-left .ai-message-box blockquote p:last-child {
  margin-bottom: 0;
}

.ai-left .ai-message-box code {
  padding: 4px 10px;
  margin: 0 2px;
  font-size: 14px;
  font-family: "SF Mono", "Menlo", "Consolas", monospace;
  color: #c026d3;
  background: var(--md-code-bg);
  border-radius: 8px;
  border: 1px solid #e4e4ec;
}

.ai-left .ai-message-box pre {
  margin: 15px 0;
  padding: 15px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.45;
  color: #e2e8f0;
  background: linear-gradient(145deg, #1e293b 0%, #0f172a 100%);
  border-radius: 12px;
  box-shadow: 0 4px 16px rgba(15, 23, 42, 0.12);
}

.ai-left .ai-message-box pre code {
  padding: 0;
  margin: 0;
  color: inherit;
  background: transparent;
  border: none;
  font-size: inherit;
}

.ai-left .ai-message-box hr {
  margin: 20px 0;
  height: 0;
  border: none;
  border-top: 1px dashed var(--md-border);
  background: transparent;
}

.ai-left .ai-message-box table {
  width: 100%;
  margin: 15px 0;
  border-collapse: separate;
  border-spacing: 0;
  font-size: 14px;
  border: 1px solid var(--md-border);
  border-radius: 12px;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(15, 23, 42, 0.06);
}

.ai-left .ai-message-box thead th {
  background: linear-gradient(180deg, #f8fafc 0%, #f1f5f9 100%);
  color: #0f172a;
  font-weight: 600;
}

.ai-left .ai-message-box th,
.ai-left .ai-message-box td {
  padding: 8px 12px;
  text-align: left;
  border-bottom: 1px solid var(--md-border);
  vertical-align: top;
}

.ai-left .ai-message-box tr:last-child td {
  border-bottom: none;
}

.ai-left .ai-message-box tbody tr:nth-child(even) {
  background: #fafbfc;
}

.ai-left .ai-message-box tbody tr:hover {
  background: rgba(37, 99, 235, 0.04);
}

/* 关闭浏览器滚动锚点，避免流式追加内容时与手动 scrollTop 冲突导致抖动 */
.ai-content {
  overflow-anchor: none;
}

.ai-left .ai-message-box .ai-md-stable {
  contain: layout style;
}

.ai-left .ai-message-box .ai-md-stream {
  white-space: pre-wrap;
  word-break: break-word;
  color: inherit;
}


.ai-left .ai-message-box img,
.ai-left .ai-message-box img.ai-md-img {
  display: block;
  max-width: 100%;
  width: auto;
  height: auto;
  margin: 10px auto;
  border-radius: 12px;
  box-shadow: 0 4px 10px rgba(0, 0, 0, 0.08);
  background: #f0f2f5;
  object-fit: contain;
}

.ai-left .ai-message-box .katex-display {
  max-width: 100%;
  overflow-x: auto !important;
  overflow-y: hidden !important;
  -webkit-overflow-scrolling: touch;
}

.ai-left .ai-message-box .katex-display > .katex {
  display: inline-block;
  min-width: max-content;
}

.ai-left .ai-message-box .katex .base {
  text-overflow: clip !important;
}

.ai-left .ai-message-box .katex-display > .katex > .katex-html > .tag {
  position: static;
  display: block;
}

.ai-message-box .mermaid-loading,
.ai-left .ai-message-box .mermaid-loading {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  margin: 16px 0;
  padding: 32px 16px;
  background: #f5f7fa;
  border: 1px dashed #dcdfe6;
  border-radius: 8px;
  height: 250px;
  width: 100%;
  box-sizing: border-box;
}

.ai-message-box .mermaid-loading .mermaid-loading-spinner,
.ai-left .ai-message-box .mermaid-loading .mermaid-loading-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid #e0e0e0;
  border-top-color: #1989fa;
  border-radius: 50%;
  animation: mermaid-spin 0.8s linear infinite;
}

.ai-message-box .mermaid-loading .mermaid-loading-text,
.ai-left .ai-message-box .mermaid-loading .mermaid-loading-text {
  margin-top: 12px;
  font-size: 13px;
  color: #909399;
}

@keyframes mermaid-spin {
  to {
    transform: rotate(360deg);
  }
}

@keyframes ai-mermaid-spin {
  to {
    transform: rotate(360deg);
  }
}

.ai-left .ai-message-box .mermaid-pending-render {
  visibility: hidden;
  min-height: 100px;
  margin: 16px 0;
}

.ai-left .ai-message-box .mermaid-container {
  margin: 16px 0;
  display: flex;
  flex-direction: column;
  border: 1px solid #ebeef5;
  border-radius: 6px;
  position: relative;
  box-sizing: border-box;
  padding: 0;
  overflow: hidden;
  min-height: 120px;
}

.ai-left .ai-message-box .mermaid-zoom-toolbar {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  background: #f5f7fa;
  border-bottom: 1px solid #ebeef5;
  flex-shrink: 0;
}

.ai-left .ai-message-box .mermaid-zoom-btn {
  font-size: 12px;
  padding: 4px 10px;
  border: 1px solid #dcdfe6;
  border-radius: 4px;
  background: #fff;
  color: #606266;
  cursor: pointer;
  line-height: 1.4;
}

.ai-left .ai-message-box .mermaid-zoom-btn:hover {
  color: #409eff;
  border-color: #c6e2ff;
}

.ai-left .ai-message-box .mermaid-zoom-viewport {
  flex: 1;
  min-height: 200px;
  overflow: hidden;
  touch-action: none;
  -ms-touch-action: none;
  cursor: grab;
  user-select: none;
  -webkit-user-select: none;
  padding: 8px;
  box-sizing: border-box;
}

.ai-left .ai-message-box .mermaid-zoom-viewport.is-panning {
  cursor: grabbing;
}

.ai-left .ai-message-box .mermaid-zoom-inner {
  display: block;
  transform-origin: 0 0;
  vertical-align: top;
  height: 300px;
}

.ai-left .ai-message-box .mermaid-container svg {
  display: block;
  width: auto !important;
  max-width: 100% !important;
  height: auto !important;
  overflow: visible !important;
}

.ai-left .ai-message-box .mermaid-container svg foreignObject {
  overflow: visible;
}

.ai-left .ai-message-box .mermaid-container svg foreignObject div,
.ai-left .ai-message-box .mermaid-container svg foreignObject span {
  overflow: visible !important;
  text-overflow: clip !important;
}

.ai-left .ai-message-box .mermaid-container svg .label text,
.ai-left .ai-message-box .mermaid-container svg .nodeLabel,
.ai-left .ai-message-box .mermaid-container svg .edgeLabel {
  overflow: visible !important;
}