/*
    fonts.css - the document fonts the Office apps ship with themselves

    Everything here is Noto Sans, under the SIL Open Font License (OFL.txt).
    These files exist so that what you see on the page and what comes out of
    a PDF export are the same thing: the exporter embeds these exact bytes,
    subset to the glyphs the deck actually uses.

    That is why they are shipped rather than taken from the system. A system
    font cannot be embedded - the browser will not hand over its bytes - so
    text set in one can only reach a PDF as a picture of itself.

    The browser fetches a face only when a character actually needs it, so a
    Latin-only document never pulls the CJK files (which are large: the CJK
    faces carry tens of thousands of glyphs each).

    Format: plain TrueType, on purpose. WOFF2 would be less than half the
    size on disk, and the browser reads it happily - but the exporter has to
    take the same file apart and build a subset of it, and a WOFF2 comes
    back from that with no outlines at all. The same goes for the CFF
    flavour of these faces (the .otf ones): they embed, and then draw the
    wrong glyphs. TrueType is the format both sides handle correctly, and
    being correct is the entire reason these files are here.

    Weights: the Latin family ships all four styles. The CJK faces ship
    Regular only and let bold be synthesized - the browser smears the outline
    without changing the advance, and the PDF exporter does the same with a
    stroked text rendering mode, so the two still agree. Shipping real bold
    CJK would double an already large payload for a difference neither side
    can see once it is on the page.
*/

@font-face {
    font-family: "Noto Sans";
    src: url("NotoSans-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans";
    src: url("NotoSans-Bold.ttf") format("truetype");
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans";
    src: url("NotoSans-Italic.ttf") format("truetype");
    font-weight: 400;
    font-style: italic;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans";
    src: url("NotoSans-BoldItalic.ttf") format("truetype");
    font-weight: 700;
    font-style: italic;
    font-display: swap;
}

/* Traditional Chinese, Simplified Chinese, Japanese, Korean. Each is the
   language-specific subset of Noto Sans CJK: same design, the regional glyph
   forms of that language. Which one a character gets depends on the order
   they appear in the font stack, so a deck that is mostly Japanese should
   pick "Noto Sans JP" from the font menu to get the Japanese forms of the
   Han characters it shares with Chinese. */

@font-face {
    font-family: "Noto Sans TC";
    src: url("NotoSansTC-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans SC";
    src: url("NotoSansSC-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans JP";
    src: url("NotoSansJP-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: "Noto Sans KR";
    src: url("NotoSansKR-Regular.ttf") format("truetype");
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}