水彩剖透视分析图：滨水台阶

剖透视分析图，主体为滨水台阶，一点透视剖面，柔和的水彩插画风格，轻盈的晕染，纸张纹理，清冷蓝灰配色，浅灰蓝到深海军蓝，粗重的剖切线，清晰的地坪高差，室内外的人物活动，向后延伸的纵深空间，构图简洁，信息层级清晰，大量留白，画面中不出现文字和标注，高清，适合设计展板

sectional perspective diagram of stepped waterfront terraces, one-point perspective section, soft watercolor illustration, gentle washes, visible paper texture, cool blue-grey palette from pale grey blue to deep navy, bold section cut line, clear ground level changes, people activities inside and outside, receding spatial depth, clean composition, clear visual hierarchy, generous white space, no text or labels in the image, high resolution, architecture presentation board