/* ChamberSync — self-hosted heading webfont. Source Serif 4 (variable: wght 400–700, optical sizing), latin + latin-ext subsets. Licence: SIL Open Font Licence 1.1 (free for commercial use, self-hosting permitted; attribution not required on the page). Source: Adobe / Frank Grießhammer. Files fetched 17/07/2026 from Google Fonts (sourceserif4 v14). Usage: headings only. Body text stays on the system stack — see brand-guidelines.md §3. Preload the latin file in for fast first paint: */ @font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("SourceSerif4-latin.woff2") format("woff2"); unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD; } @font-face { font-family: "Source Serif 4"; font-style: normal; font-weight: 400 700; font-display: swap; src: url("SourceSerif4-latin-ext.woff2") format("woff2"); unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF; } :root { --font-heading: "Source Serif 4", Georgia, "Times New Roman", serif; --font-body: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif; }