feat: video-flow initial commit

- app.py: Streamlit UI for video generation workflow
- main_flow.py: CLI tool with argparse support
- modules/: Business logic modules (script_gen, image_gen, video_gen, composer, etc.)
- config.py: Configuration with API keys and paths
- requirements.txt: Python dependencies
- docs/: System prompt documentation

modules/styles.py

@@ -0,0 +1,76 @@
+"""
+花字样式预设库
+供 Design Agent 和 Renderer 使用
+"""
+
+STYLES = {
+    # 1. 醒目强调 (黄色高亮)
+    "highlight": {
+        "font_size": 60,
+        "font_color": "#FFE66D", # 亮黄
+        "stroke": {"color": "#000000", "width": 4},
+        "shadow": {"color": "#000000", "blur": 8, "offset": [4, 4], "opacity": 0.6}
+    },
+    
+    # 2. 警告/痛点 (红色/黑色背景)
+    "warning": {
+        "font_size": 55,
+        "font_color": "#FFFFFF",
+        "stroke": {"color": "#FF0000", "width": 0}, # 无描边
+        "background": {
+            "type": "box",
+            "color": "#FF4D4F", # 红色背景
+            "corner_radius": 12,
+            "padding": [15, 25, 15, 25] # t, r, b, l
+        },
+        "shadow": {"color": "#990000", "blur": 0, "offset": [0, 6], "opacity": 0.4} # 立体感阴影
+    },
+    
+    # 3. 价格/促销 (大号红色)
+    "price": {
+        "font_size": 90,
+        "font_color": "#FF2E2E", # 鲜红
+        "stroke": {"color": "#FFFFFF", "width": 6}, # 白边
+        "shadow": {"color": "#FF9999", "blur": 15, "offset": [0, 0], "opacity": 0.8} # 发光效果
+    },
+    
+    # 4. 对话/气泡 (黑字白底圆角)
+    "bubble": {
+        "font_size": 48,
+        "font_color": "#333333",
+        "background": {
+            "type": "box",
+            "color": "#FFFFFF",
+            "corner_radius": 40, # 大圆角
+            "padding": [20, 40, 20, 40]
+        },
+        "shadow": {"color": "#000000", "blur": 10, "offset": [2, 5], "opacity": 0.2}
+    },
+    
+    # 5. 时尚/极简 (细黑体+白字)
+    "minimal": {
+        "font_size": 65,
+        "font_color": "#FFFFFF",
+        "stroke": {"color": "#000000", "width": 2},
+        "shadow": {"color": "#000000", "blur": 2, "offset": [2, 2], "opacity": 0.8},
+        "font_family": "NotoSansSC-Regular.otf" # 假设有这个字体，或者回退
+    },
+    
+    # 6. 科技/未来 (青色+发光)
+    "tech": {
+        "font_size": 60,
+        "font_color": "#00FFFF",
+        "stroke": {"color": "#003333", "width": 3},
+        "shadow": {"color": "#00FFFF", "blur": 20, "offset": [0, 0], "opacity": 0.9}
+    }
+}
+
+def get_style(style_name: str) -> dict:
+    """获取样式配置，支持回退"""
+    return STYLES.get(style_name, STYLES["highlight"])
+
+
+
+
+
+