创作一张澳大利亚大堡礁的高端编辑风旅行海报插画。
风格：扁平矢量插画、极致干净的极简主义、中世纪现代旅行海报美学，灵感来自复古旅游印刷品与斯堪的纳维亚平面设计。不要照片写实，不要纹理，不要噪点，不要渐变。使用清晰利落的形状、平滑的色块和和谐鲜艳的色调。
构图（竖版 3:4 布局）：
前景（水下）：丰富的珊瑚礁生态系统，充满粉色、橙色、黄色和红色调的彩色珊瑚。包含多种热带鱼（条纹、亮黄色、蓝色和橙色），以及一只优雅地向右游动的大海龟。清澈的绿松石色海水，能见度高。
中景：一位女性浮潜者在水面下方水平游动，佩戴脚蹼和浮潜面罩，观察下方珊瑚礁。光线微妙地穿过水面。
背景（水面上）：平静的热带海洋，透过水晶般清澈的海水可见浅礁斑块。左侧一艘白色休闲船安静漂浮，远处有一艘小帆船。地平线上延展着柔和的绿色岛屿或山丘。
天空：明亮的蓝天、蓬松的白云，以及几只飞鸟，强化宁静的度假氛围。
文字排版：
在海报底部，加入加粗大写文字：
“GREAT BARRIER REEF”
其下方加入较小且拉开字距的文字：
“AUSTRALIA”
在分隔线之间添加一个小型装饰珊瑚图标。
氛围与光线：明亮日光、平静、宜人、热带天堂氛围。色彩应清新、鲜艳、放松，并在珊瑚礁与海洋蓝色之间形成强烈对比。
Create a premium editorial travel poster illustration of the Great Barrier Reef, Australia.
Style: Flat vector illustration, ultra-clean minimalism, mid-century modern travel poster aesthetic, inspired by vintage tourism prints and Scandinavian graphic design. No photorealism, no textures, no noise, no gradients. Use crisp shapes, smooth color blocks, and harmonious vibrant tones.
Composition (vertical 3:4 layout):
Foreground (underwater): A rich coral reef ecosystem filled with colorful corals in pink, orange, yellow, and red tones. Include tropical fish of various species (striped, bright yellow, blue, and orange), and a large sea turtle swimming gracefully toward the right. Clear turquoise water with high visibility.
Midground: A female snorkeler swimming horizontally just beneath the water surface, wearing fins and a snorkel mask, observing the reef below. Light rays subtly pass through the water surface.
Background (above water): A calm tropical ocean with shallow reef patches visible through crystal-clear water. A white leisure boat floats peacefully on the left, and a small sailboat appears far in the distance. On the horizon, soft green islands or hills stretch across.
Sky: Bright blue sky with fluffy white clouds and a few birds flying, enhancing the serene vacation mood.
Typography:
At the bottom of the poster, include bold uppercase text:
“GREAT BARRIER REEF”
Below it, smaller spaced-out text:
“AUSTRALIA”
Add a small decorative coral icon between divider lines.
Mood & Lighting: Bright daylight, calm, inviting, tropical paradise atmosphere. Colors should feel fresh, vibrant, and relaxing with strong contrast between coral reef and ocean blues.
