"Budget Build Challenge" 是一个 DIY 制作视频的 YouTube 缩略图，采用醒目的挑战风格。黄到橙渐变的粗大字加深色描边占满左边，上方一个集数标签，下方一个蓝色预算上限徽章，右边工作台上是做了一半的木制作品、工具和图纸，背景是黄昏城市。

Create a high-contrast 16:9 YouTube episode thumbnail, designed to read on a phone screen. A dusk urban rooftop workshop fills the frame: blurred city skyline and cyan window-light bokeh in the rear, a rough plywood workbench across the bottom, scattered socket wrench, measuring tape, screws, folded store receipt, and a half-assembled compact DIY project silhouette at lower right. Keep all background objects defocused and subordinate to text. Set exact text, with no extra words: small top-left label: “EPISODE 07” main headline, two stacked lines across the left and center: “BUDGET BUILD” / “CHALLENGE” small bottom-left detail line: “$100 LIMIT” “BUDGET BUILD” occupies about 62% of the frame width; “CHALLENGE” occupies about 55%. Custom bold sticker-outline lettering: ultra-heavy compact rounded uppercase, wide proportions, fully rounded corners and terminals, tight line spacing. Each letter has a warm electric-yellow to amber face, thick clean white outer die-cut contour, slim charcoal inner keyline, deep navy offset extrusion shadow down-right, and a subtle peel-edge highlight along the upper left. The outline and shadow must remain visibly separated at thumbnail size. Add a narrow cyan rim light to the right-facing letter edges, while the amber rooftop backlight makes a clean halo around the full title. Composition: text blocks sit in the left 72% with a slight 5-degree upward tilt; the half-built project occupies the lower-right 25% as the subject. “EPISODE 07” is small in a dark navy rounded capsule above the headline. “$100 LIMIT” is white uppercase inside a cyan rectangular price-tag strip below. Strong warm amber key light from behind-left, teal shadows, crisp focal separation, clean dark navy negative space, restrained film grain. No faces, no logos, no illegible filler text.