/* Inter, self-hosted.
 *
 * index.html used to pull this from fonts.googleapis.com, which put two
 * third-party origins in front of first paint: a DNS lookup, a TLS handshake
 * and a render-blocking stylesheet, before the browser even learned which font
 * files it needed. Served from our own origin the files are two requests on a
 * connection that is already open, and the whole chain disappears from the
 * critical path.
 *
 * It also takes two hosts out of the Content-Security-Policy that the security
 * work adds: a self-hosted font needs no font-src or style-src exception.
 *
 * Inter is SIL Open Font License 1.1, which permits this. The upstream files
 * are unmodified — the same woff2 Google serves, with the same unicode-range
 * splits, so a page of plain English fetches only the 48 kB latin subset.
 *
 * VARIABLE, weight 400-700 in one file. The previous link requested four
 * static weights as four separate downloads; the variable font covers the whole
 * range the app uses in one, and is smaller than two of the four were.
 *
 * To refresh: take the latin and latin-ext URLs from
 *   https://fonts.googleapis.com/css2?family=Inter:wght@400..700&display=swap
 * (sent with a modern browser's User-Agent, or Google serves the TrueType
 * fallback instead of woff2) and replace the two files beside this one.
 * Upstream is Inter v20.
 */

@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  /* swap: text renders immediately in the fallback and is repainted when Inter
     arrives. The alternative is invisible text for as long as the font takes,
     which is a worse first paint than a slightly different one. */
  font-display: swap;
  src: url('/fonts/inter-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: 'Inter';
  font-style: normal;
  font-weight: 400 700;
  font-display: swap;
  src: url('/fonts/inter-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-20C4, U+2113, U+2C60-2C7F, U+A720-A7FF;
}