窗帘杆、百叶窗、电动窗帘这些项目，看起来像是“小事”，但真正影响效果的通常是高度、宽度、支架位置和长期拉合时的受力。Rods, blinds and motorized curtains may look simple, but the final result depends on height, width, bracket placement and how the setup handles daily movement over time.
大窗、整面墙落地窗、卧室遮光帘、儿童房、书房百叶窗，或者你还没决定做 rod 还是 blinds，这些都很适合先说一遍情况。Large windows, wall-wide openings, bedroom blackout curtains, kids-room windows, study blinds and projects where you are still choosing between rods and blinds all benefit from a quick review first.
杆子装太低、太窄，或者只顾看居中，没考虑日常拉扯和墙面固定。结果就是窗户显小、帘子不顺、时间一久开始松。Rods are often placed too low or too narrow, or centered visually without thinking about daily pulling force and wall support. That is usually where the trouble starts.
窗户数量、大概尺寸、你想要遮光还是更好看、材料是否已经买好。如果有现场照片，判断会更快。Window count, rough size, whether you care more about blackout or appearance and whether the materials are already purchased. Photos help a lot too.