Nano Banana Pro X 标题图片生成提示

# ===== 用户控制 =====
title_text: "{argument name="显示字符串" default="<<你的文本>>"}"
title_style_preset: "{argument name="标志设计预设" default="cool"}" # cool, cute, cool_cute, luxury, pop, cyber, minimal, retro, kawaii
face_zoom: "{argument name="面部缩放开/关" default="off"}"            # off, on

subject: >
  使用提供的参考图像内容创建一个 3:1 的宽幅横幅。
  主要面部必须居中于一个不可见的“安全区”（不绘制），
  并且标题标志（由 title_text + title_style_preset 生成）必须放置在同一个安全区内。

composition: >
  长宽比 3:1。
  不可见的安全区（请勿绘制）：
  - 左边距：宽度的 15%
  - 右边距：宽度的 15%
  - 上边距：高度的 16%
  - 下边距：高度的 16%
  将整个面部和整个标题标志完全保持在此安全区内。
  背景可以延伸到边缘。

action: >
  以最高保真度放置参考图像内容。
  自动裁剪/缩放/重新定位以适应 3:1 的横幅，不拉伸。
  检测主要面部（如果有多张面部，选择最大/最突出的）。
  将主要面部在安全区内水平和垂直居中。
  切勿裁剪面部/眼睛；将整个面部舒适地保持在安全区内（不要靠近边缘）。

  面部缩放行为：
  - 如果 face_zoom 为 OFF：尽可能保持原始构图，同时将面部居中于安全区。
  - 如果 face_zoom 为 ON：缩放/裁剪为以面部为中心的半身像
    （头部和肩膀可见；包括上半身；不要裁剪头顶或下巴；保持面部特征突出）。

  通过调整裁剪/重新定位/输出，在安全区内为标题标志创建负空间。

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**Original English:**
# ===== USER CONTROLS =====
title_text: "{argument name="表示文字列" default="<<YOUR_TEXT>>"}"
title_style_preset: "{argument name="ロゴデザインプリセット" default="cool"}"  # cool, cute, cool_cute, luxury, pop, cyber, minimal, retro, kawaii
face_zoom: "{argument name="ズームのon/off" default="off"}"            # off, on

subject: >
  Create a 3:1 wide banner using the provided reference image content.
  The primary face must be centered inside an invisible safe zone (not drawn),
  and a title logo (derived from title_text + title_style_preset) must be placed inside the same safe zone.

composition: >
  Aspect ratio 3:1.
  Invisible safe zone (DO NOT draw it):
  - Left margin: 15% of width
  - Right margin: 15% of width
  - Top margin: 16% of height
  - Bottom margin: 16% of height
  Keep the entire face AND the entire title logo fully inside this safe zone.
  Background may extend to the edges.

action: >
  Place the reference image content with maximum fidelity.
  Auto-crop/scale/reposition to fit a 3:1 banner with no stretching.
  Detect the primary face (if multiple faces, pick the largest/most prominent).
  Center the primary face within the safe zone both horizontally and vertically.
  Never crop off the face/eyes; keep the full face comfortably inside the safe zone (not near edges).

  Face zoom behavior:
  - If face_zoom is OFF: keep the original framing as much as possible while still centering the face in the safe zone.
  - If face_zoom is ON: zoom/crop to a bust-up portrait centered on the face
    (head and shoulders visible; include upper chest; do not crop the top of the head or chin; keep facial features prominent).

  Create negative space inside the safe zone for the title logo by adjusting crop/reposition/out