diff --git a/README.md b/README.md
index 4a719d4..2e54dcf 100644
--- a/README.md
+++ b/README.md
@@ -138,6 +138,10 @@ themes/mon-theme/
Les chemins doivent rester dans le dossier du thème (`..` et chemins absolus refusés) et les valeurs des variables ne peuvent pas contenir `url(`, `;` ou `{}` : un thème téléchargé ne peut ni lire vos fichiers ni casser l'interface. Les erreurs de thème sont écrites dans les logs. Les sons d'Orbe sont générés par `node tools/gen-sounds.mjs`.
+## Skin Steam
+
+Pour garder Steam avec le style Orbe : skin CSS Loader pour Big Picture et le mode jeu SteamOS, plus une vidéo de démarrage pour Steam Deck. Voir [`skins/steam`](skins/steam/README.md).
+
## Mode kiosque
*Paramètres*, *Mode kiosque* : le launcher reste en plein écran et ne se ferme plus au clavier (Alt+F4 ne suffit pas) ; on le quitte par le menu système.
diff --git a/skins/steam/Orbe/background.css b/skins/steam/Orbe/background.css
new file mode 100644
index 0000000..da11fe8
--- /dev/null
+++ b/skins/steam/Orbe/background.css
@@ -0,0 +1,5 @@
+/* Orbe de particules (image fixe, rendue par tools/art.html) derrière l'accueil et la bibliothèque */
+.gamepadui_BasicHome.gamepadui_OpaqueBackground,
+.gamepadlibrary_GamepadLibrary {
+ background: url(/themes_custom/Orbe/orb.webp) right -10vw center / auto 110% no-repeat, radial-gradient(ellipse at 74% 50%, #151b09 0%, #0d0f0a 35%, #0a0a0a 70%) !important;
+}
diff --git a/skins/steam/Orbe/fonts.css b/skins/steam/Orbe/fonts.css
new file mode 100644
index 0000000..256cafd
--- /dev/null
+++ b/skins/steam/Orbe/fonts.css
@@ -0,0 +1,9 @@
+/* Archivo à la place de Motiva Sans : on redéclare la famille utilisée par Steam (les dernières déclarations l'emportent), sans toucher aux sélecteurs. */
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 100; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 300; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 400; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 500; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 700; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 400; font-style: italic; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 300; font-style: italic; }
+@font-face { font-family: "Motiva Sans"; src: url(/themes_custom/Orbe/fonts/Archivo.woff2) format("woff2"); font-weight: 700; font-style: italic; }
diff --git a/skins/steam/Orbe/fonts/Archivo.woff2 b/skins/steam/Orbe/fonts/Archivo.woff2
new file mode 100644
index 0000000..e2448d0
Binary files /dev/null and b/skins/steam/Orbe/fonts/Archivo.woff2 differ
diff --git a/skins/steam/Orbe/fonts/OFL-Archivo.txt b/skins/steam/Orbe/fonts/OFL-Archivo.txt
new file mode 100644
index 0000000..8597481
--- /dev/null
+++ b/skins/steam/Orbe/fonts/OFL-Archivo.txt
@@ -0,0 +1,93 @@
+Copyright 2020 The Archivo Project Authors (https://github.com/Omnibus-Type/Archivo)
+
+This Font Software is licensed under the SIL Open Font License, Version 1.1.
+This license is copied below, and is also available with a FAQ at:
+http://scripts.sil.org/OFL
+
+
+-----------------------------------------------------------
+SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
+-----------------------------------------------------------
+
+PREAMBLE
+The goals of the Open Font License (OFL) are to stimulate worldwide
+development of collaborative font projects, to support the font creation
+efforts of academic and linguistic communities, and to provide a free and
+open framework in which fonts may be shared and improved in partnership
+with others.
+
+The OFL allows the licensed fonts to be used, studied, modified and
+redistributed freely as long as they are not sold by themselves. The
+fonts, including any derivative works, can be bundled, embedded,
+redistributed and/or sold with any software provided that any reserved
+names are not used by derivative works. The fonts and derivatives,
+however, cannot be released under any other type of license. The
+requirement for fonts to remain under this license does not apply
+to any document created using the fonts or their derivatives.
+
+DEFINITIONS
+"Font Software" refers to the set of files released by the Copyright
+Holder(s) under this license and clearly marked as such. This may
+include source files, build scripts and documentation.
+
+"Reserved Font Name" refers to any names specified as such after the
+copyright statement(s).
+
+"Original Version" refers to the collection of Font Software components as
+distributed by the Copyright Holder(s).
+
+"Modified Version" refers to any derivative made by adding to, deleting,
+or substituting -- in part or in whole -- any of the components of the
+Original Version, by changing formats or by porting the Font Software to a
+new environment.
+
+"Author" refers to any designer, engineer, programmer, technical
+writer or other person who contributed to the Font Software.
+
+PERMISSION & CONDITIONS
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of the Font Software, to use, study, copy, merge, embed, modify,
+redistribute, and sell modified and unmodified copies of the Font
+Software, subject to the following conditions:
+
+1) Neither the Font Software nor any of its individual components,
+in Original or Modified Versions, may be sold by itself.
+
+2) Original or Modified Versions of the Font Software may be bundled,
+redistributed and/or sold with any software, provided that each copy
+contains the above copyright notice and this license. These can be
+included either as stand-alone text files, human-readable headers or
+in the appropriate machine-readable metadata fields within text or
+binary files as long as those fields can be easily viewed by the user.
+
+3) No Modified Version of the Font Software may use the Reserved Font
+Name(s) unless explicit written permission is granted by the corresponding
+Copyright Holder. This restriction only applies to the primary font name as
+presented to the users.
+
+4) The name(s) of the Copyright Holder(s) or the Author(s) of the Font
+Software shall not be used to promote, endorse or advertise any
+Modified Version, except to acknowledge the contribution(s) of the
+Copyright Holder(s) and the Author(s) or with their explicit written
+permission.
+
+5) The Font Software, modified or unmodified, in part or in whole,
+must be distributed entirely under this license, and must not be
+distributed under any other license. The requirement for fonts to
+remain under this license does not apply to any document created
+using the Font Software.
+
+TERMINATION
+This license becomes null and void if any of the above conditions are
+not met.
+
+DISCLAIMER
+THE FONT SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT
+OF COPYRIGHT, PATENT, TRADEMARK, OR OTHER RIGHT. IN NO EVENT SHALL THE
+COPYRIGHT HOLDER BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+INCLUDING ANY GENERAL, SPECIAL, INDIRECT, INCIDENTAL, OR CONSEQUENTIAL
+DAMAGES, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+FROM, OUT OF THE USE OR INABILITY TO USE THE FONT SOFTWARE OR FROM
+OTHER DEALINGS IN THE FONT SOFTWARE.
diff --git a/skins/steam/Orbe/orb.webp b/skins/steam/Orbe/orb.webp
new file mode 100644
index 0000000..6bb81a6
Binary files /dev/null and b/skins/steam/Orbe/orb.webp differ
diff --git a/skins/steam/Orbe/shared.css b/skins/steam/Orbe/shared.css
new file mode 100644
index 0000000..21e3adb
--- /dev/null
+++ b/skins/steam/Orbe/shared.css
@@ -0,0 +1,61 @@
+/* Orbe pour Steam (Big Picture, mode jeu SteamOS) via CSS Loader.
+ Les classes sont écrites sous leur nom lisible : CSS Loader les traduit vers les noms de la version de Steam installée
+ (tools/check.py vérifie qu'elles existent toutes). */
+:root {
+ --orbe-bg: #0a0a0a;
+ --orbe-surface: #121212;
+ --orbe-line: #262624;
+ --orbe-text: #f5f5f0;
+ --orbe-muted: #8f8f8a;
+ --orbe-accent: #d3fd50;
+}
+
+::selection { background: var(--orbe-accent); color: var(--orbe-bg); }
+
+/* Fonds : noir profond à la place du bleu nuit */
+.gamepadui_BasicHome.gamepadui_OpaqueBackground,
+.gamepadlibrary_GamepadLibrary { background: var(--orbe-bg) !important; }
+.gamepadpagedsettings_PagedSettingsDialog,
+.mainmenu_Menu { background: var(--orbe-bg) !important; }
+
+/* Jaquettes : contour citron au focus */
+.appportrait_LibraryItemBox.gpfocus {
+ outline: 3px solid var(--orbe-accent) !important;
+ outline-offset: 3px;
+ box-shadow: 0 0 34px rgba(211, 253, 80, .28) !important;
+}
+
+/* Boutons : accent plein au focus */
+button.DialogButton.gpfocus,
+button.DialogButton:enabled.gpfocus,
+button.gamepaddialog_Button.DialogButton.gpfocus,
+button.gamepaddialog_Button.DialogButton:enabled.gpfocus {
+ background: var(--orbe-accent) !important;
+ color: var(--orbe-bg) !important;
+}
+
+/* Onglets du haut */
+.gamepadtabbedpage_Tab.gamepadtabbedpage_Selected,
+.gamepadtabbedpage_Tab.gamepadtabbedpage_Selected:hover {
+ background-color: var(--orbe-accent) !important;
+ color: var(--orbe-bg) !important;
+}
+
+/* Menu principal : entrée active en citron */
+.mainmenu_Item.mainmenu_Active,
+.mainmenu_Item.mainmenu_Active .mainmenu_ItemIcon { color: var(--orbe-accent) !important; }
+
+/* Menus contextuels */
+.gamepadcontextmenu_contextMenuItem.gamepadcontextmenu_Focused {
+ background: var(--orbe-accent) !important;
+ color: var(--orbe-bg) !important;
+}
+
+/* Lignes de réglage : léger voile citron au focus */
+.gamepaddialog_Field.gpfocus,
+.gamepaddialog_Field.gpfocuswithin { background: rgba(211, 253, 80, .08) !important; }
+
+/* Interrupteurs et curseurs */
+.gamepaddialog_ToggleRail::before { background: var(--orbe-accent) !important; }
+.gamepaddialog_Toggle.gamepaddialog_On .gamepaddialog_ToggleSwitch { background: var(--orbe-bg) !important; }
+.gamepadslider_SliderTrack { --left-track-color: var(--orbe-accent) !important; }
diff --git a/skins/steam/Orbe/theme.json b/skins/steam/Orbe/theme.json
new file mode 100644
index 0000000..5cdb299
--- /dev/null
+++ b/skins/steam/Orbe/theme.json
@@ -0,0 +1,29 @@
+{
+ "name": "Orbe",
+ "author": "yasder5",
+ "version": "v1.0.0",
+ "description": "Le style d'Orbe Launcher dans Steam (Big Picture et mode jeu SteamOS) : noir profond, accent citron, police Archivo, orbe de particules en fond.",
+ "target": "System-Wide",
+ "manifest_version": 8,
+ "inject": {
+ "shared.css": ["SP", "bigpicture", "QuickAccess", "MainMenu"]
+ },
+ "patches": {
+ "Police Archivo": {
+ "default": "Yes",
+ "type": "checkbox",
+ "values": {
+ "Yes": { "fonts.css": ["SP", "bigpicture", "QuickAccess", "MainMenu"] },
+ "No": {}
+ }
+ },
+ "Fond orbe": {
+ "default": "Yes",
+ "type": "checkbox",
+ "values": {
+ "Yes": { "background.css": ["SP", "bigpicture"] },
+ "No": {}
+ }
+ }
+ }
+}
diff --git a/skins/steam/README.md b/skins/steam/README.md
new file mode 100644
index 0000000..f64cfd6
--- /dev/null
+++ b/skins/steam/README.md
@@ -0,0 +1,26 @@
+# Skin Steam Orbe
+
+Le style d'Orbe Launcher pour l'interface manette de Steam (Big Picture sous Windows, mode jeu SteamOS / Steam Deck), via [CSS Loader](https://github.com/DeckThemes/SDH-CssLoader). Rien n'est modifié dans les fichiers de Steam.
+
+- `Orbe/` : le thème CSS Loader (couleurs dans `shared.css`, options « Police Archivo » et « Fond orbe »).
+- `deck_startup.webm` : vidéo de démarrage 1280×800 pour Steam Deck / SteamOS.
+- `tools/check.py` : vérifie que chaque classe utilisée existe dans la version actuelle de Steam.
+- `tools/art.html` + `tools/render.py` : rendent `Orbe/orb.webp` et les images de la vidéo.
+
+## Installer
+
+**Steam Deck / SteamOS** : Decky Loader, puis CSS Loader depuis sa boutique ; copier `Orbe/` dans `~/homebrew/themes/` et l'activer dans CSS Loader.
+
+**Windows (Big Picture)** : [CSSLoader Desktop](https://github.com/beebls/CSSLoader-Desktop/releases) ; activer le mode développeur de Windows et redémarrer le backend une fois (police et fond) ; copier `Orbe/` dans `%USERPROFILE%\homebrew\themes\`.
+
+**Vidéo de démarrage** : copier `deck_startup.webm` dans `~/.steam/root/config/uioverrides/movies/`, puis Paramètres, Personnalisation, Vidéo de démarrage.
+
+## Classes Steam
+
+Les sélecteurs utilisent les noms lisibles (`gamepaddialog_ToggleRail`) : CSS Loader les traduit vers les noms obfusqués de la version de Steam installée. Après une mise à jour de Steam :
+
+```sh
+curl -so map.json https://api.deckthemes.com/stable.json
+# sp.css : dans le paquet steamui_websrc_all du client (liste : client-update.steamstatic.com/steam_client_ubuntu12)
+python3 tools/check.py map.json sp.css
+```
diff --git a/skins/steam/deck_startup.webm b/skins/steam/deck_startup.webm
new file mode 100644
index 0000000..d8783b3
Binary files /dev/null and b/skins/steam/deck_startup.webm differ
diff --git a/skins/steam/tools/art.html b/skins/steam/tools/art.html
new file mode 100644
index 0000000..557c27c
--- /dev/null
+++ b/skins/steam/tools/art.html
@@ -0,0 +1,60 @@
+
+
+
+
+Orbe Steam art
+
+
+
+
+orbe.
+
+
+
diff --git a/skins/steam/tools/check.py b/skins/steam/tools/check.py
new file mode 100644
index 0000000..b51785e
--- /dev/null
+++ b/skins/steam/tools/check.py
@@ -0,0 +1,16 @@
+#!/usr/bin/env python3
+"""Vérifie que chaque classe lisible du skin (module_Nom) est connue de CSS Loader et existe dans l'interface Steam actuelle.
+Usage : check.py """
+import json, re, sys
+from pathlib import Path
+
+mapping, sp = json.load(open(sys.argv[1])), open(sys.argv[2]).read()
+alias = {a: v[-1] for v in mapping.values() for a in v}
+bad = 0
+for f in sorted((Path(__file__).parent.parent / "Orbe").glob("*.css")):
+ for name in sorted(set(re.findall(r"\.([a-z]+_[A-Za-z]+)\b", f.read_text()))):
+ cur = alias.get(name)
+ ok = cur is not None and re.search(r"\." + re.escape(cur) + r"(?![\w-])", sp)
+ bad += not ok
+ print("%-4s %-12s %-45s %s" % ("ok" if ok else "ABS", f.name, name, cur or "-"))
+sys.exit(1 if bad else 0)
diff --git a/skins/steam/tools/render.py b/skins/steam/tools/render.py
new file mode 100644
index 0000000..3144619
--- /dev/null
+++ b/skins/steam/tools/render.py
@@ -0,0 +1,45 @@
+#!/usr/bin/env python3
+"""Rend tools/art.html dans un Chromium headless (protocole CDP) : fond orbe (PNG transparent) et vidéo de démarrage (images PNG).
+Usage : render.py """
+import base64, json, os, sys, time, urllib.request
+import websocket
+
+url, cdp, out = sys.argv[1:4]
+os.makedirs(out + "/frames", exist_ok=True)
+t = json.load(urllib.request.urlopen(urllib.request.Request(cdp + "/json/new?about:blank", method="PUT")))
+ws, n = websocket.create_connection(t["webSocketDebuggerUrl"], timeout=60), 0
+
+
+def cmd(method, **params):
+ global n
+ n += 1
+ ws.send(json.dumps({"id": n, "method": method, "params": params}))
+ while True:
+ m = json.loads(ws.recv())
+ if m.get("id") == n:
+ return m.get("result", {})
+
+
+def shot(path, w, h):
+ png = cmd("Page.captureScreenshot", format="png", clip={"x": 0, "y": 0, "width": w, "height": h, "scale": 1})["data"]
+ open(path, "wb").write(base64.b64decode(png))
+
+
+def load(mode, w, h):
+ cmd("Emulation.setDeviceMetricsOverride", width=w, height=h, deviceScaleFactor=1, mobile=False)
+ cmd("Emulation.setDefaultBackgroundColorOverride", color={"r": 0, "g": 0, "b": 0, "a": 0})
+ cmd("Page.navigate", url=url + "?mode=" + mode)
+ time.sleep(1.5)
+ cmd("Runtime.evaluate", expression="document.fonts.ready", awaitPromise=True)
+
+
+cmd("Page.enable")
+load("bg", 1920, 1080)
+cmd("Runtime.evaluate", expression="render(2)")
+shot(out + "/orb.png", 1920, 1080)
+
+load("boot", 1280, 800)
+for i in range(120): # 4 s à 30 i/s
+ cmd("Runtime.evaluate", expression="render(%f)" % (i / 30))
+ shot("%s/frames/%03d.png" % (out, i), 1280, 800)
+cmd("Page.close")