Japanese Prompt Tip Slide

Goal: Create a clean Japanese instructional slide about prompt-writing tip {argument name="tip number" default="コツ①"}, explaining that whitespace and excluded elements should be stated first.

Canvas: 16:9 horizontal presentation slide, warm off-white background, generous margins, modern minimalist editorial layout. Use dark navy text and teal accents.

Layout: Split the slide into two main columns. The left column takes about 48% width and contains the lesson text plus two comparison cards. The right column takes about 47% width and shows a large example banner: a solid navy rectangle with only one centered white headline.

Left column details: At top left, place a rounded teal pill label reading {argument name="badge text" default="コツ①"}. Below it, use a large bold Japanese headline in dark navy: {argument name="main headline" default="余白と「入れないもの」を最初に明示する"}. Add a thin teal underline only under the phrase 「入れないもの」. Under the headline, place a teal circular check icon followed by bold text: 「一番効きます。」 with a short teal underline beneath the sentence.

Comparison section: Below the lesson text, place exactly 2 rounded rectangular cards side by side with light gray borders. Card 1 is the bad example, labeled with a small gray pill 「悪い例」 at the top and a pale gray X icon near the upper-left corner. It contains the quote 「夏のセールのバナーを作って。おしゃれな感じで。」 and below it a busy colorful summer-sale banner thumbnail with palm leaves, beach colors, decorative badges, English words, discount circles, dates, and many small ornaments; visible text includes “SPECIAL”, “SUMMER”, 「夏のセール」, 「今だけおトク！」, 「最大50% OFF」, and 「期間限定！7.1 TUE ▶ 7.31 THU」. Card 2 is the good example, labeled with a teal pill 「良い例」 at the top and a teal check icon at the upper-right corner. It contains a short bullet list in Japanese describing the constraints: 「夏のセールのバナー。」, 「背景は単色のネイビー」, 「上下左右に広い余白を残す」, 「中央に『夏のセール』のみ大きく」, 「他の文字・英語・装飾・バッジは一切入れない」.

Right column example: Create one large solid dark navy rectangle with no border, no decoration, and wide empty space. Center a single white Japanese headline reading {argument name="banner headline" default="夏のセール"}. The text should be large, bold, clean sans-serif, horizontally and vertically centered. Do not add any other text, icons, badges, images, patterns, gradients, or decorative elements inside this right banner.

Visual style: Japanese tech/business education design, crisp typography, high contrast, precise spacing, subtle rounded corners, teal accent color, no watermark. Keep the composition close to a screenshot-like presentation slide.