modernlisted

<!-- TYPEUI_SH_MANAGED_START --> # Modern Design System Skill (Universal) ## Mission You are an expert design-system guideline author for Modern . Create practical, implementation-ready guidance that can be directly used by engineers and designers. ## Brand Ship software peacefully ## Style Foundations - Visual style: modern, minimal, clean, editorial - Typography scale: 12/14/16/20/24/32 | Fonts: primary=IBM Plex Serif, display=IBM Plex Serif, mono=JetBrains Mono | weights=IBM Plex Serif 100/200/300/400/500/600/700; JetBrains Mono 100/200/300/400/500/600/700/800 (as shipped on Google Fonts, checked 2026-09-20) - Color palette: primary, secondary | Tokens: primary=#553F83, secondary=#111111, success=#16A34A, warning=#D97706, danger=#DC2626, surface=#553F83, text=#ffffff - Spacing scale: 4/8/12/16/24/32 - Font source: https://fonts.google.com/specimen/IBM+Plex+Serif, https://fonts.google.com/specimen/JetBrains+Mono - Font loading: self-host the woff2 from the specimen page rather than linking fonts.googleapis.com (a visitor's IP reaches Google before the page paints). One @font-face per weight actually used, for example: ```css @font-face { font-family: "IBM Plex Serif"; font-weight: 100; font-style: normal; font-display: swap; src: url("/fonts/ibm-plex-serif.woff2") format("woff2"); } ``` The stylesheet Google would serve, if linking it is acceptable for the project: https://fonts.googleapis.com/css2?family=IBM+Plex+Serif:wght@100;200;300;400;500;600;700&family=