diff --git a/__init__.py b/__init__.py
index 7dfe102..a638f99 100644
--- a/__init__.py
+++ b/__init__.py
@@ -22,6 +22,7 @@ except Exception:
 import ssl
 
 from .nodes import NanoBananaPro, BatchNanoBananaPro, GoogleGemini, LoadFile, ImageStitchPro, SaveCleanImage, BatchCleanMetadata, VideoPreview, GoogleVeo, FluxImageEdit, UniversalLLMChat, KlingVideo, KlingFirstLastFrame, KlingMotionControlTest, AspectRatioPreset, MultiResPreview, BatchImagesO1key, Seedance, SeedanceMultiModal, StreamPreview, DoubaoImage, O1keyGPTImage, KVideo
+from .nodes import K3Video
 
 # 报错弹框友好文案（不修改原节点代码，仅在外层统一处理）
 _MSG_TIMEOUT = "API 请求超时，请稍后重试或检查网络。"
@@ -81,6 +82,7 @@ NODE_CLASS_MAPPINGS = {
     "DoubaoImage": DoubaoImage,
     "O1keyGPTImage": O1keyGPTImage,
     "KVideo": KVideo,
+    "K3Video": K3Video,
 }
 
 NODE_DISPLAY_NAME_MAPPINGS = {
@@ -107,6 +109,7 @@ NODE_DISPLAY_NAME_MAPPINGS = {
     "DoubaoImage": "豆包生图",
     "O1keyGPTImage": "o1key GPT Image",
     "KVideo": "K26 图生视频",
+    "K3Video": "K3 图生视频 自研",
 }
 
 WEB_DIRECTORY = "./web"
diff --git a/nodes/K3_video.py b/nodes/K3_video.py
new file mode 100644
index 0000000..d292a03
--- /dev/null
+++ b/nodes/K3_video.py
@@ -0,0 +1,99 @@
+"""
+K3 图生视频 自研节点（方案A：经典 INPUT_TYPES 前端壳子）
+复刻 Kling 3.0 Video 的前端参数，多镜头通过下拉选择控制分镜数量。
+后端请求尚未实现。
+"""
+
+try:
+    from comfy_api.latest import InputImpl
+    import folder_paths
+    _FOLDER_PATHS_OK = True
+except Exception:
+    _FOLDER_PATHS_OK = False
+
+
+# ── 常量 ──────────────────────────────────────────────────────────────────────
+
+_MULTI_SHOT_OPTIONS = [
+    "disabled",
+    "1 storyboard",
+    "2 storyboards",
+    "3 storyboards",
+    "4 storyboards",
+    "5 storyboards",
+    "6 storyboards",
+]
+
+_MODELS        = ["kling-v3"]
+_MODES         = ["std", "pro", "4k"]
+
+
+# ── 节点 ──────────────────────────────────────────────────────────────────────
+
+class K3Video:
+    """K3 图生视频 自研（前端壳子，后端待实现）"""
+
+    @classmethod
+    def INPUT_TYPES(cls):
+        required = {
+            # 多镜头模式选择
+            "多镜头": (_MULTI_SHOT_OPTIONS, {
+                "default": "disabled",
+                "tooltip": "disabled：单段模式；N storyboards：启用 N 段分镜。",
+            }),
+            # 单段模式字段（多镜头 disabled 时使用）
+            "提示词":    ("STRING", {"multiline": True, "default": ""}),
+            "负向提示词": ("STRING", {"multiline": True, "default": ""}),
+            "时长":      ([5, 10, 15], {
+                "default": 5,
+                "tooltip": "单段模式时长（秒）；多镜头模式下由各分镜时长决定。",
+            }),
+            # 通用参数
+            "生成音频": (["关闭", "打开"], {"default": "关闭"}),
+            "模型":     (_MODELS, {"default": "kling-v3"}),
+            "模式":     (_MODES,  {"default": "std"}),
+            "seed": ("INT", {
+                "default": 0, "min": 0, "max": 2147483647,
+                "tooltip": "seed 仅控制节点是否重新运行，结果本身不可复现。",
+            }),
+        }
+
+        # 分镜字段放最后，按 分镜N_提示词 / 分镜N_时长 交替排列
+        for i in range(1, 7):
+            required[f"分镜{i}_提示词"] = ("STRING", {
+                "multiline": True, "default": "",
+                "tooltip": f"第 {i} 段分镜提示词，最多 512 字符。",
+            })
+            required[f"分镜{i}_时长"] = ("INT", {
+                "default": 4, "min": 1, "max": 15,
+                "display": "slider",
+                "tooltip": f"第 {i} 段分镜时长（秒）。",
+            })
+
+        optional = {
+            "起始帧": ("IMAGE",),
+            "尾帧":   ("IMAGE",),
+        }
+
+        return {"required": required, "optional": optional}
+
+    RETURN_TYPES  = ("VIDEO",)
+    RETURN_NAMES  = ("视频",)
+    FUNCTION      = "generate"
+    CATEGORY      = "comfyui_o1key/KVideo"
+
+    async def generate(self, 多镜头, 提示词, 负向提示词, 时长,
+                       生成音频, 模型, 模式, seed,
+                       起始帧=None, 尾帧=None, **kwargs):
+        raise NotImplementedError("K3 图生视频 自研：后端尚未实现。")
+
+
+# ── 节点注册 ──────────────────────────────────────────────────────────────────
+
+NODE_CLASS_MAPPINGS = {
+    "K3Video": K3Video,
+}
+
+NODE_DISPLAY_NAME_MAPPINGS = {
+    "K3Video": "K3 图生视频 自研",
+}
diff --git a/nodes/__init__.py b/nodes/__init__.py
index 278c68e..9e33ed8 100644
--- a/nodes/__init__.py
+++ b/nodes/__init__.py
@@ -21,5 +21,6 @@ from .seedance_video import Seedance, SeedanceMultiModal
 from .doubao_image import DoubaoImage
 from .gpt_image import O1keyGPTImage
 from .K_video import KVideo
+from .K3_video import K3Video
 
-__all__ = ['NanoBananaPro', 'BatchNanoBananaPro', 'GoogleGemini', 'LoadFile', 'ImageStitchPro', 'SaveCleanImage', 'BatchCleanMetadata', 'VideoPreview', 'KlingVideo', 'KlingFirstLastFrame', 'KlingMotionControlTest', 'AspectRatioPreset', 'GoogleVeo', 'FluxImageEdit', 'UniversalLLMChat', 'MultiResPreview', 'BatchImagesO1key', 'Seedance', 'SeedanceMultiModal', 'StreamPreview', 'DoubaoImage', 'O1keyGPTImage', 'KVideo']
+__all__ = ['NanoBananaPro', 'BatchNanoBananaPro', 'GoogleGemini', 'LoadFile', 'ImageStitchPro', 'SaveCleanImage', 'BatchCleanMetadata', 'VideoPreview', 'KlingVideo', 'KlingFirstLastFrame', 'KlingMotionControlTest', 'AspectRatioPreset', 'GoogleVeo', 'FluxImageEdit', 'UniversalLLMChat', 'MultiResPreview', 'BatchImagesO1key', 'Seedance', 'SeedanceMultiModal', 'StreamPreview', 'DoubaoImage', 'O1keyGPTImage', 'KVideo', 'K3Video']