frontend: Integrate self-hosted IBM Plex fonts, replace Google Fonts
IBM Plex Sans and Mono are now embedded locally (`woff2`) under `src/fonts`, licensed under SIL OFL 1.1. Removed external `<link>` to Google Fonts for enhanced privacy and compliance. Updated `style.css` with `@font-face` and unicode ranges for `latin` and `latin-ext` subsets. Added license details to documentation.
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mhoennig
@@ -19,3 +19,12 @@ AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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---
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Third-party components
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This project bundles the IBM Plex Sans and IBM Plex Mono fonts
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(frontend/src/fonts/*.woff2), Copyright 2019 IBM Corp., licensed under the
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SIL Open Font License 1.1 — not under the MIT License above. The full font
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license is in frontend/src/fonts/OFL.txt and at https://scripts.sil.org/OFL.
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+3
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@@ -149,4 +149,6 @@ via Actions ist für private Repos nur mit kostenpflichtigem Plan verfügbar).
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## Lizenz
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MIT — siehe [LICENSE](LICENSE). © 2026 Michael Hönnig.
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MIT — siehe [LICENSE](LICENSE). © 2026 Michael Hönnig. Die mitgelieferten
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IBM-Plex-Schriften stehen unter der SIL Open Font License 1.1 (siehe
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[LICENSE](LICENSE) und `frontend/src/fonts/OFL.txt`).
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@@ -150,4 +150,6 @@ is only available for private repos on a paid plan).
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## License
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MIT — see [LICENSE](LICENSE). © 2026 Michael Hönnig.
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MIT — see [LICENSE](LICENSE). © 2026 Michael Hönnig. The bundled IBM Plex fonts
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are under the SIL Open Font License 1.1 (see [LICENSE](LICENSE) and
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`frontend/src/fonts/OFL.txt`).
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@@ -285,3 +285,32 @@ aktiv).
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liest `../docs/brand/favicon.svg` und ersetzt den `<link rel="icon">` durch eine
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`data:`-URI — so bleibt die Brand-Quelle unverändert und die Ausgabe eine
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einzige Datei.)
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## D20 — Schriften lokal einbetten statt von Google Fonts laden
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Die Seite lud IBM Plex Sans/Mono über einen `<link>` von `fonts.googleapis.com`
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(zzgl. Font-Dateien von `fonts.gstatic.com`). Das überträgt bei **jedem**
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Seitenaufruf die **IP-Adresse des Besuchers an Google (USA)** — ohne
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Einwilligung und ohne Notwendigkeit (vgl. LG München I, 3 O 17493/20). Das
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widerspricht einer datensparsamen Datenschutzerklärung ohne Drittanbieter-
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Einbindung und zugleich dem Selbstverständnis aus D19/SPEC §9 („keine externen
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Ressourcen").
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**Entscheidung: Schriften self-hosten.** Die tatsächlich genutzten Schnitte
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(Sans 400/500/600, Mono 400/500) liegen als `woff2` unter
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`frontend/src/fonts/`, eingebunden per `@font-face` in `style.css` mit
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`font-display:swap`. Bezogen aus den OFL-lizenzierten `@fontsource`-Paketen
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(nur per `npm pack` gezogen — **keine** neue Projekt-Abhängigkeit; die Dateien
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sind eingecheckte Assets), Lizenztext in `fonts/OFL.txt`. Subsets **latin +
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latin-ext** mit den `unicode-range`-Werten von fontsource decken DE/EN/ES/FR/PL;
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nicht-lateinische UI-Sprachen (RU/HI/ZH/JA) fielen schon vorher auf `system-ui`
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zurück (IBM Plex latin enthält diese Schriftsysteme nicht), also keine
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Regression. Der Dev-Server liefert die `woff2` lokal aus; `vite build` inlint
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sie als `data:font/woff2`-URIs in die eine `dist/index.html` (D19) — der
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deployte Stand macht damit **keinen** externen Request mehr (verifiziert: 0
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Treffer `googleapis`/`gstatic`, 10 inline-`woff2`). Kostet ~204 KB Fonts
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(dist 89 → 320 KB, gzip ~208 KB) — bewusst in Kauf genommen für Datenschutz und
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Standalone-Tauglichkeit (`file://`).
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Verworfene Alternative: Google-Link ersatzlos streichen und nur die System-
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Schrift (`system-ui`) nutzen — spart die 204 KB, gibt aber die einheitliche
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Markentypografie (IBM Plex, BRAND) auf.
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@@ -31,6 +31,11 @@ verworfene Elemente. Quelle sind ES-Module unter `src/`; `index.html` ist der
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- Design: Farben/Typografie beibehalten (CSS-Variablen, IBM Plex);
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Statusfarben sind in SPEC §4 normiert. Marke nach ../brand/BRAND.md;
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Pastelltöne nie im Logo.
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- IBM Plex ist **lokal eingebettet** (`src/fonts/*.woff2`, `@font-face` in
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`style.css`), **nicht** von Google Fonts geladen — kein externer Request,
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keine IP an Dritte (Datenschutz, D20). Keinen `googleapis`-`<link>` wieder
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einführen. Neue Schnitte: `woff2` per `npm pack @fontsource/…` beziehen (keine
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Projekt-Abhängigkeit, Dateien einchecken) und `@font-face` ergänzen.
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## Stolperfallen
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- Abzweig-Linien zielen auf die **Knotenmitte** (fester 23-px-Offset,
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@@ -6,7 +6,6 @@
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<title>Werkbaum – WBS-Editor für Projektstrukturplan & Feature-Tree (Und/Oder-Baum)</title>
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<meta name="description" content="Werkbaum ist ein textbasierter Editor für Projektstrukturpläne (PSP / Work Breakdown Structure, WBS): Struktur als Text schreiben, das Und/Oder-Baum-Diagramm entsteht live. Ebenso als Feature-Tree für Anforderungen (Requirements) und Aufwandsschätzung.">
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<link rel="icon" type="image/svg+xml" href="../docs/brand/favicon.svg">
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<link href="https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@400;500;600&family=IBM+Plex+Mono:wght@400;500&display=swap" rel="stylesheet">
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</head>
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<body>
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@@ -0,0 +1,93 @@
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Copyright 2019 IBM Corp. All rights reserved. IBMPlexSans-Italic[wdth,wght].ttf: Copyright 2019 IBM Corp. All rights reserved.
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This Font Software is licensed under the SIL Open Font License, Version 1.1.
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This license is copied below, and is also available with a FAQ at:
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http://scripts.sil.org/OFL
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-----------------------------------------------------------
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SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
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-----------------------------------------------------------
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PREAMBLE
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The goals of the Open Font License (OFL) are to stimulate worldwide
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development of collaborative font projects, to support the font creation
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efforts of academic and linguistic communities, and to provide a free and
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open framework in which fonts may be shared and improved in partnership
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with others.
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The OFL allows the licensed fonts to be used, studied, modified and
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redistributed freely as long as they are not sold by themselves. The
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fonts, including any derivative works, can be bundled, embedded,
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redistributed and/or sold with any software provided that any reserved
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names are not used by derivative works. The fonts and derivatives,
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however, cannot be released under any other type of license. The
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requirement for fonts to remain under this license does not apply
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to any document created using the fonts or their derivatives.
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DEFINITIONS
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"Font Software" refers to the set of files released by the Copyright
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Holder(s) under this license and clearly marked as such. This may
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include source files, build scripts and documentation.
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"Reserved Font Name" refers to any names specified as such after the
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copyright statement(s).
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"Original Version" refers to the collection of Font Software components as
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distributed by the Copyright Holder(s).
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"Modified Version" refers to any derivative made by adding to, deleting,
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or substituting -- in part or in whole -- any of the components of the
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Original Version, by changing formats or by porting the Font Software to a
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new environment.
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"Author" refers to any designer, engineer, programmer, technical
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writer or other person who contributed to the Font Software.
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PERMISSION & CONDITIONS
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Permission is hereby granted, free of charge, to any person obtaining
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a copy of the Font Software, to use, study, copy, merge, embed, modify,
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redistribute, and sell modified and unmodified copies of the Font
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Software, subject to the following conditions:
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1) Neither the Font Software nor any of its individual components,
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in Original or Modified Versions, may be sold by itself.
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2) Original or Modified Versions of the Font Software may be bundled,
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redistributed and/or sold with any software, provided that each copy
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contains the above copyright notice and this license. These can be
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included either as stand-alone text files, human-readable headers or
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in the appropriate machine-readable metadata fields within text or
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binary files as long as those fields can be easily viewed by the user.
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3) No Modified Version of the Font Software may use the Reserved Font
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Name(s) unless explicit written permission is granted by the corresponding
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Copyright Holder. This restriction only applies to the primary font name as
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presented to the users.
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4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
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Software shall not be used to promote, endorse or advertise any
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Modified Version, except to acknowledge the contribution(s) of the
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Copyright Holder(s) and the Author(s) or with their explicit written
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permission.
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5) The Font Software, modified or unmodified, in part or in whole,
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must be distributed entirely under this license, and must not be
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distributed under any other license. The requirement for fonts to
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remain under this license does not apply to any document created
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using the Font Software.
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TERMINATION
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This license becomes null and void if any of the above conditions are
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not met.
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DISCLAIMER
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THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
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MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
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OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
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COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
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DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
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OTHER DEALINGS IN THE FONT SOFTWARE.
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@@ -1,3 +1,42 @@
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/*! IBM Plex Sans & IBM Plex Mono — Copyright 2019 IBM Corp.
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Licensed under the SIL Open Font License 1.1 — https://scripts.sil.org/OFL
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(kein Reserved Font Name deklariert). Volltext: frontend/src/fonts/OFL.txt */
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/* Lokal eingebettet (self-hosted) statt von Google Fonts geladen — kein
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externer Request, keine IP-Übertragung an Dritte (Datenschutz, D20). Nur die
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genutzten Schnitte (Sans 400/500/600, Mono 400/500), Subsets latin +
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latin-ext (decken DE/EN/ES/FR/PL); andere Skripte fallen ohnehin auf
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system-ui zurück. Der Build inlint die .woff2 als data:-URI (D19). */
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-400-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:400;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-ext-400-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-500-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:500;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-ext-500-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-600-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Sans';font-style:normal;font-weight:600;font-display:swap;
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src:url(./fonts/ibm-plex-sans-latin-ext-600-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
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src:url(./fonts/ibm-plex-mono-latin-400-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:400;font-display:swap;
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src:url(./fonts/ibm-plex-mono-latin-ext-400-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;
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src:url(./fonts/ibm-plex-mono-latin-500-normal.woff2) format('woff2');
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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}
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@font-face{font-family:'IBM Plex Mono';font-style:normal;font-weight:500;font-display:swap;
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src:url(./fonts/ibm-plex-mono-latin-ext-500-normal.woff2) format('woff2');
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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}
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:root{
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--paper:#F3F6F9;
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--grid:rgba(36,52,71,.055);
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Block a user