创建澳大利亚 Great Barrier Reef 的高级编辑旅行海报插图。 风格：平面矢量插图、超干净的极简主义、中世纪现代旅行海报美学，灵感来自复古旅游印刷品和斯堪的纳维亚平面设计。没有真实感，没有纹理，没有噪音，没有渐变。使用清晰的形状、平滑的色块和和谐的充满活力的色调。 组成（垂直3:4布局）： 前景（水下）：丰富的珊瑚礁生态系统，充满了粉红色、橙色、黄色和红色色调的彩色珊瑚。包括各种热带鱼（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。清澈碧绿的海水，能见度很高。 中景：一名女性浮潜者在水面下水平游泳，穿着脚蹼和浮潜面罩，观察下面的珊瑚礁。光线巧妙地穿过水面。 背景（水面以上）：平静的热带海洋，透过清澈的海水可以看到浅礁斑块。左边一艘白色的休闲船安静地漂浮着，远处出现了一艘小帆船。地平线上，柔软的绿色岛屿或山丘绵延不绝。 天空：蔚蓝的天空上飘着蓬松的白云，还有几只鸟儿飞翔，增添了宁静的度假气氛。 版式： 在海报底部包含粗体大写文本： “GREAT BARRIER REEF” 下面是较小的间隔文本： “AUSTRALIA” 在分隔线之间添加一个小装饰珊瑚图标。 氛围和灯光：明亮的日光、平静、诱人的热带天堂氛围。颜色应该给人感觉 清新、充满活力、令人放松，珊瑚礁和海洋蓝色形成鲜明对比。

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.