生成专业的法律结构可视化图，输出为自包含 HTML 文件（内嵌 SVG，浅色主题，适合打印和嵌入文档）。适用场景：(1) 用户要求"画结构图""生成可视化""做流程图""法律图示"时；(2) 涉及诉讼推理结构（当事人→证据→事实→法律→判决）；(3) 合同关系图（甲乙方权利义务、履约节点、违约责任）；(4) 法规程序图（申请→审查→决定→救济）；(5) 证据链图、请求权基础分析图、法律体系层级图。Use when the user asks for litigation flow diagrams, contract relationship diagrams, legal reasoning structure diagrams, evidence chain diagrams, or any legal visualization.
生成专业的法律结构可视化图，输出为自包含 HTML 文件（内嵌 SVG，浅色主题，适合打印和嵌入文档）。适用场景：(1) 用户要求"画结构图""生成可视化""做流程图""法律图示"时；(2) 涉及诉讼推理结构（当事人→证据→事实→法律→判决）；(3) 合同关系图（甲乙方权利义务、履约节点、违约责任）；(4) 法规程序图（申请→审查→决定→救济）；(5) 证据链图、请求权基础分析图、法律体系层级图。Use when the user asks for litigation flow diagrams, contract relationship diagrams, legal reasoning structure diagrams, evidence chain diagrams, or any legal visualization.
Create professional legal structure diagrams as self-contained HTML files with inline SVG. Designed for court document analysis, contract review, legal knowledge management, and client presentations. Output is light-themed and print-ready.
Design System
Color Palette
Use these semantic colors for legal component types:
Component Type
Fill (rgba)
Stroke
Use Case
当事人/主体 (Party)
rgba(219,234,254,0.9)
#2563eb (blue-600)
原告、被告、甲方、乙方、第三人
事实/行为 (Fact)
rgba(241,245,249,0.9)
#475569 (slate-600)
侵权行为、违约事实、案件经过
证据 (Evidence)
rgba(254,243,199,0.9)
#b45309 (amber-700)
书证、物证、证人证言、鉴定意见
法律规范 (Law)
rgba(209,250,229,0.9)
#047857 (emerald-700)
法条、司法解释、行政法规
程序节点 (Procedure)
rgba(237,233,254,0.9)
#6d28d9 (violet-700)
立案、开庭、举证、质证、裁定
裁判/结论 (Judgment)
rgba(254,226,226,0.9)
#b91c1c (red-700)
判决主文、责任认定、风险结论
争议焦点 (Issue)
rgba(255,237,213,0.9)
#c2410c (orange-700)
争议焦点、待查明事实
Typography
Use Inter for all text — clean, professional, print-friendly:
Cross-layer or indirect logical connections: Use dashed lines:
stroke-dasharray="4,3"
Arrow z-order: ALWAYS draw all arrows BEFORE component boxes in the SVG. SVG renders in document order, so arrows drawn first appear behind boxes drawn later.
Layout Patterns
Choose the layout based on content type:
1. 诉讼流程图 (Litigation Flow) — top-to-bottom layered with group boxes
For: case analysis, judgment structure, evidence → fact → law → judgment chain.
PREFERRED PATTERN — dashed group boxes + single vertical arrows:
Each reasoning stage is enclosed in a dashed group box with a badge label straddling its top-left border. Stages connect via a single purely vertical arrow in the center (x=500 for a 1000-wide viewBox). No node-to-node arrows across stages — this avoids visual clutter and false logical implications.
┌─────────────────────────────────┐
│ [当事人] 原告 ●●● 被告 │ ← group box, dashed border
└─────────────────────────────────┘
↓ (single arrow at center x)
┌─────────────────────────────────┐
│ [争议焦点] 焦点一 焦点二 │
└─────────────────────────────────┘
↓
... etc through 证据 → 事实认定 → 法律适用 → 判决结果
Group box SVG pattern (badge label straddles top-left border):
<!-- Group box --><rectx="8"y="127"width="984"height="82"rx="8"fill="rgba(255,237,213,0.12)"stroke="#fb923c"stroke-width="1.2"stroke-dasharray="6,4"/><!-- Badge: rect behind text, centered on top border (y = group top - 8) --><rectx="14"y="119"width="64"height="16"rx="4"fill="rgba(255,237,213,0.95)"stroke="#fb923c"stroke-width="0.8"/><textx="46"y="131"fill="#9a3412"font-size="9"font-weight="600"text-anchor="middle"font-family="Inter,system-ui">争议焦点</text>
Vertical gap between group boxes: 28–32px. Place one arrow per gap:
<linex1="500"y1="[group_bottom+2]"x2="500"y2="[next_group_top-2]"stroke="#64748b"stroke-width="1.5"marker-end="url(#arr)"/><!-- Final arrow to judgment box uses red: stroke="#b91c1c" stroke-width="2" marker-end="url(#arr-red)" -->
Within each group box, items are arranged horizontally (no intra-group arrows needed — spatial proximity implies relationship). Reserve arrows for cross-group logical flow only.
totalRowWidth = N * boxWidth + (N-1) * gap
startX = (viewBoxWidth - totalRowWidth) / 2
Legend Placement
Place legend BELOW all diagram content, at least 20px below the lowest element. Use a light rounded-rectangle background. Arrange legend items horizontally.
Page Structure
Header — title (with colored status dot), subtitle (case number / date / court)
Diagram card — white card with border-shadow, contains SVG
Info cards — 3-column grid with metadata (parties, evidence summary, judgment key points)
Footer — case number and skill attribution
Output Format
Always produce a single self-contained .html file:
Embedded CSS only (Google Fonts link allowed)
Inline SVG (no external images or scripts)
Light background (#f8fafc) — suitable for printing and embedding in Word/PPT
No JavaScript required
File should open and render correctly in any modern browser, and look professional when printed.
