Sansan Style Design System (DESIGN.md, Japanese UI)

Design Systems

Design policy: Professional and trustworthy business SaaS design. Based on deep navy blue, balancing solidity with innovation - Density: An LP-style spacious section structure, but characterized by body line-height: 1.0 and extremely tight line spacing - Keywords: Trust, solidity, navy blue, business, clean - Characteristics: A Latin-script-first font stack that places helvetica first (lowercase) and combines it with Yu Gothic. A powerful large heading size of 54.8px. 51 CSS custom properties

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Sansan Style Design System (DESIGN.md, Japanese UI)

You are an expert web designer. Build a stunning, production-ready page with
a bold hero section, smooth CSS transitions and a carefully tuned dark palette.
Use a neutral background, generous rounded corners and one electric accent color.
Structure the layout with a sticky header, feature grid, social proof and a final
call to action. Keep typography tight, spacing consistent and motion subtle.

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Sansan Style Design System (DESIGN.md, Japanese UI) | MotionSites