A luminous alpine lake landscape showing a pale historic château standing on a small wooded island beneath monumental snow-covered mountains. The main focal point is the castle placed slightly right of center, with a light stone façade, steep slate roofs, narrow arched windows, one tall cylindrical tower with crenellations, and elegant but historically believable proportions. The building should feel refined, inhabited, and naturally integrated into the island rather than like a fantasy palace. Use a broad foreground of calm turquoise-blue water with gentle ripples, softly broken reflections, darker depth near the island, and a long pale reflection of the château extending toward the viewer. The island should have an irregular shoreline with reeds, low stone embankments, mature deciduous trees, clipped lawns, narrow paths, and a few restrained garden terraces. The middle ground should contain the island, château, and a small secondary residence with a warm terracotta roof, kept visually subordinate. Across the far shore, show a compact lakeside village spreading gently along the lower slopes, with varied red and gray roofs, pale façades, small roads, and no repeated copy-paste buildings. The background should rise into immense forested mountains with dense deep-green conifers, bright summer meadows, exposed gray rock, and sharp snow-covered peaks catching clear daylight. The mountain range should feel physically massive and protective, forming a strong natural wall behind the lake and castle. Use crisp but softened alpine light with warm highlights on the château, trees, village roofs, and snow ridges, balanced by cool turquoise reflections and blue-green shadows across the lake and mountains. Use a harmonious palette of turquoise, deep lake blue, forest green, fresh meadow green, pale limestone, slate gray, snow white, muted terracotta, and soft gold. Render the scene as a refined romantic landscape oil painting with soft academic realism and impressionist painterly treatment. Use visible layered brushwork, luminous water transitions, believable architecture, atmospheric perspective, tactile foliage, coherent mountain geology, and a clear visual hierarchy from water to island to village to peaks. The image should feel majestic, serene, fresh, and deeply inviting, like a hidden European sanctuary protected by mountains and water. Negative prompt: distorted castle, duplicate towers, repeated houses, modern high-rises, oversized boats, artificial turquoise water, plastic foliage, warped mountains, neon colors, text, signature, watermark