diff --git a/home/.chezmoiignore.tmpl b/home/.chezmoiignore.tmpl
index f01d11c..8d3e9e3 100644
--- a/home/.chezmoiignore.tmpl
+++ b/home/.chezmoiignore.tmpl
@@ -24,6 +24,17 @@ scripts
 {{ if ne .chezmoi.osRelease.id "arch" }}
 .config/*-flags.conf
 {{ end }}
+{{ if eq .chezmoi.osRelease.id "nixos" }}
+.config/bash
+.config/fcitx5
+.config/bat
+.config/doom
+.config/fish
+.config/zsh
+.config/lsd
+.config/keyd
+.config/readline
+{{ end }}
 {{ end }}
 
 {{ if ne .chezmoi.os "darwin" }}
diff --git a/home/dot_config/nvim/lua/plugins/misc.lua b/home/dot_config/nvim/lua/plugins/misc.lua
index cb9db10..061ea06 100644
--- a/home/dot_config/nvim/lua/plugins/misc.lua
+++ b/home/dot_config/nvim/lua/plugins/misc.lua
@@ -3,8 +3,8 @@ return {
   { "wakatime/vim-wakatime",               lazy = false },
   { import = "plugins.mod.toggleterm" },
   { import = "plugins.mod.which-keys-nvim" },
-  { import = "plugins.mod.copilot-lua" },
-  { import = "plugins.mod.avante-nvim" },
+  -- { import = "plugins.mod.copilot-lua" },
+  -- { import = "plugins.mod.avante-nvim" },
   {
     "kawre/leetcode.nvim",
     build = ":TSUpdate html", -- if you have `nvim-treesitter` installed
diff --git a/nixcfgs/.gitignore b/nixcfgs/.gitignore
index e69de29..89b3a77 100644
--- a/nixcfgs/.gitignore
+++ b/nixcfgs/.gitignore
@@ -0,0 +1 @@
+secrets.nix
diff --git a/nixcfgs/hosts/zephyrus/default.nix b/nixcfgs/hosts/zephyrus/default.nix
index c64b175..d4044d7 100644
--- a/nixcfgs/hosts/zephyrus/default.nix
+++ b/nixcfgs/hosts/zephyrus/default.nix
@@ -17,8 +17,9 @@
     ../../modules/nixos/docker.nix
     ../../modules/nixos/firefox.nix
     ../../modules/nixos/desktop/gnome.nix
-    # ../../modules/nixos/desktop/kde.nix
-    ../../modules/nixos/display-manager/gdm.nix
+    # ../../modules/nixos/desktop/niri.nix
+    ../../modules/nixos/desktop/kde.nix
+    ../../modules/nixos/display-manager/sddm.nix
     ./hardware-configuration.nix
     ./keyd.nix
     ./packages.nix
@@ -26,5 +27,6 @@
 
   nixpkgs.config.allowUnfree = true;
   networking.hostName = "zephyrus";
+  hardware.enableRedistributableFirmware = true;
   system.stateVersion = "25.05";
 }
diff --git a/nixcfgs/hosts/zephyrus/packages.nix b/nixcfgs/hosts/zephyrus/packages.nix
index e9a973f..9cc9b5d 100644
--- a/nixcfgs/hosts/zephyrus/packages.nix
+++ b/nixcfgs/hosts/zephyrus/packages.nix
@@ -1,6 +1,4 @@
-{ pkgs, ... }:
-
-{
+{pkgs, ...}: {
   environment.systemPackages = with pkgs; [
     asusctl
     supergfxctl
@@ -9,4 +7,3 @@
   services.asusd.enable = true;
   services.supergfxd.enable = true;
 }
-
diff --git a/nixcfgs/modules/home/dev/c.nix b/nixcfgs/modules/home/dev/c.nix
index e69de29..f97368d 100644
--- a/nixcfgs/modules/home/dev/c.nix
+++ b/nixcfgs/modules/home/dev/c.nix
@@ -0,0 +1,7 @@
+{pkgs, ...}:
+
+{
+  home.packages = with pkgs; [
+    gcc
+  ];
+}
diff --git a/nixcfgs/modules/nixos/chromium.nix b/nixcfgs/modules/nixos/chromium.nix
index b53d3c8..b7c1b95 100644
--- a/nixcfgs/modules/nixos/chromium.nix
+++ b/nixcfgs/modules/nixos/chromium.nix
@@ -1,8 +1,15 @@
 {pkgs, ...}: {
   programs.chromium = {
+    enable = true;
+    homepageLocation = "https://duckduckgo.com";
+    defaultSearchProviderSearchURL = "https://duckduckgo.com?q={searchTerms}";
     extraOpts = {
-      "BrowserSignin" = 0;
+      "BrowserSignin" = 1;
       "PasswordManagerEnabled" = false;
+      "ExtensionManifestV2Availability" = 2;
     };
+    extensions = [
+      "cjpalhdlnbpafiamejdnhcphjbkeiagm" # ublock origin
+    ];
   };
 }
diff --git a/nixcfgs/modules/nixos/desktop/niri.nix b/nixcfgs/modules/nixos/desktop/niri.nix
new file mode 100644
index 0000000..5916b1c
--- /dev/null
+++ b/nixcfgs/modules/nixos/desktop/niri.nix
@@ -0,0 +1,8 @@
+{pkgs, ...}: {
+  programs.niri.enable = true;
+  environment.systemPackages = with pkgs; [
+    waybar
+    mako
+    rofi
+  ];
+}
diff --git a/nixcfgs/modules/nixos/display-manager/sddm.nix b/nixcfgs/modules/nixos/display-manager/sddm.nix
index c572f22..b654af2 100644
--- a/nixcfgs/modules/nixos/display-manager/sddm.nix
+++ b/nixcfgs/modules/nixos/display-manager/sddm.nix
@@ -1,10 +1,34 @@
-{pkgs, ...}: {
+{pkgs, ...}:
+
+# See https://www.reddit.com/r/NixOS/comments/1kcj34p/how_to_apply_this_sddm_theme_on_nixos/
+let
+  custom-sddm-astronaut = pkgs.sddm-astronaut.override {
+    embeddedTheme = "astronaut";
+    #themeConfig = {
+    #  Background = "path/to/background.jpg";
+    #  Font = "M+1 Nerd Font";
+    #};
+  };
+
+in {
+  # Enable the KDE Plasma Desktop Environment.
   services.displayManager.sddm = {
     enable = true;
-    wayland.enable = true;
     extraPackages = with pkgs; [
-      sddm-astronaut
-    ];
-    # theme = "sddm-astronaut-theme";
+      custom-sddm-astronaut
+     ];
+
+    theme = "sddm-astronaut-theme";
+    settings = {
+      Theme = {
+        Current = "sddm-astronaut-theme";
+      };
+    };
   };
+
+  environment.systemPackages = with pkgs; [
+    custom-sddm-astronaut
+    kdePackages.qtmultimedia
+  ];
+
 }
diff --git a/nixcfgs/modules/nixos/firefox.nix b/nixcfgs/modules/nixos/firefox.nix
index 4d9f895..c90b7b5 100644
--- a/nixcfgs/modules/nixos/firefox.nix
+++ b/nixcfgs/modules/nixos/firefox.nix
@@ -10,23 +10,70 @@
 
     preferences = {
       "widget.use-xdg-desktop-portal.file-picker" = 1;
+      "widget.use-xdg-desktop-portal.mime-handler" = 1;
+      "screenshots.browser.component.enabled" = false;
+      "toolkit.telemetry.enabled" = false;
+      "toolkit.telemetry.archive.enabled" = false;
+      "browser.shell.checkDefaultBrowser" = false;
+      "browser.contentblocking.category" = "strict";
+      "browser.formfill.enable" = false;
+      "extensions.formautofill.creditCards.enabled" = false;
+      "dom.forms.autocomplete.formautofill" = false;
+      "browser.urlbar.update2.engineAliasRefresh" = true;
+      "browser.newtabpage.activity-stream.showSponsored" = false;
+      "browser.newtabpage.activity-stream.showSponsoredTopSites" = false;
     };
 
     policies = {
       DisableTelemetry = true;
       BlockAboutConfig = false;
+      DisableFirefoxScreenshots = true;
       DontCheckDefaultBrowser = true;
 
-      ExtensionSettings = let
-        moz = short: "https://addons.mozilla.org/firefox/downloads/latest/${short}/latest.xpi";
-      in {
-        "*".installation_mode = "blocked";
-
-        "uBlock0@raymondhill.net" = {
-          install_url = moz "ublock-origin";
-          installation_mode = "force_installed";
-          updates_disabled = true;
+      ExtensionSettings = with builtins; let
+        extension = short: uuid: {
+          name = uuid;
+          value = {
+            install_url = "https://addons.mozilla.org/firefox/downloads/latest/${short}/latest.xpi";
+            installation_mode = "force_installed";
+          };
         };
+      in
+        listToAttrs [
+          (extension "ublock-origin" "uBlock0@raymondhill.net")
+          (extension "multi-account-containers" "@testpilot-containers")
+          (extension "side-view" "@webcompat@mozilla.org")
+          (extension "clearurls" "{74145f27-f039-47ce-a470-a662b129930a}")
+        ];
+
+      SearchEngines = {
+        Default = "DuckDuckGo";
+        Add = [
+          {
+            Alias = "@np";
+            Description = "Search in NixOS Packages";
+            IconURL = "https://nixos.org/favicon.ico";
+            Method = "GET";
+            Name = "NixOS Packages";
+            URLTemplate = "https://search.nixos.org/packages?from=0&size=200&sort=relevance&type=packages&query={searchTerms}";
+          }
+          {
+            Alias = "@no";
+            Description = "Search in NixOS Options";
+            IconURL = "https://nixos.org/favicon.ico";
+            Method = "GET";
+            Name = "NixOS Options";
+            URLTemplate = "https://search.nixos.org/options?from=0&size=200&sort=relevance&type=packages&query={searchTerms}";
+          }
+          {
+            Alias = "@hm";
+            Description = "Search in Home Manager Options";
+            IconURL = "https://nixos.org/favicon.ico";
+            Method = "GET";
+            Name = "Home Manager options";
+            URLTemplate = "https://home-manager-options.extranix.com/?query={searchTerms}";
+          }
+        ];
       };
     };
   };
diff --git a/nixcfgs/users/js0ny/default.nix b/nixcfgs/users/js0ny/default.nix
index b3522eb..6a377d9 100644
--- a/nixcfgs/users/js0ny/default.nix
+++ b/nixcfgs/users/js0ny/default.nix
@@ -15,6 +15,7 @@
     ./programs/shell.nix
     ./programs/vscode.nix
     ./programs/git.nix
+    ../../modules/home/dev/c.nix
     ../../modules/home/dev/java.nix
     ../../modules/home/dev/nix.nix
     ../../modules/home/dev/python.nix
diff --git a/nixcfgs/users/js0ny/packages/flatpak.nix b/nixcfgs/users/js0ny/packages/flatpak.nix
index 0ff9962..a39ef18 100644
--- a/nixcfgs/users/js0ny/packages/flatpak.nix
+++ b/nixcfgs/users/js0ny/packages/flatpak.nix
@@ -1,5 +1,5 @@
 # https://github.com/gmodena/nix-flatpak
-{nix-flatpak, ...}: {
+{...}: {
   services.flatpak.remotes = [
     {
       name = "flathub";
@@ -23,4 +23,11 @@
     # "com.vivaldi.Vivaldi"
     "com.getpostman.Postman"
   ];
+  services.flatpak.overrides = {
+    "com.tencent.WeChat" = {
+      Environment = {
+        QT_IM_MODULE = "fcitx";
+      };
+    };
+  };
 }
diff --git a/nixcfgs/users/js0ny/packages/gui.nix b/nixcfgs/users/js0ny/packages/gui.nix
index ad6bcbd..3ab2ef6 100644
--- a/nixcfgs/users/js0ny/packages/gui.nix
+++ b/nixcfgs/users/js0ny/packages/gui.nix
@@ -24,5 +24,6 @@
     cherry-studio
     vivaldi
     kdePackages.kdeconnect-kde
+    picard
   ];
 }
diff --git a/nixcfgs/users/js0ny/programs/chromium.nix b/nixcfgs/users/js0ny/programs/chromium.nix
index dd36b7f..b406b83 100644
--- a/nixcfgs/users/js0ny/programs/chromium.nix
+++ b/nixcfgs/users/js0ny/programs/chromium.nix
@@ -3,6 +3,9 @@
     enable = true;
     commandLineArgs = [
       "--enable-wayland-ime"
+      "--enable-features=WaylandWindowDecorations"
+      "--enable-features=UseOzonePlatform"
+      "--ozone-platform-hint=auto"
     ];
     extensions = [
       {id = "cjpalhdlnbpafiamejdnhcphjbkeiagm";} # ublock origin
@@ -10,6 +13,7 @@
       {id = "eimadpbcbfnmbkopoojfekhnkhdbieeh";} # dark reader
       {id = "gfbliohnnapiefjpjlpjnehglfpaknnc";} # surfingkeys
       {id = "bpoadfkcbjbfhfodiogcnhhhpibjhbnh";} # immersive translate
+      {id = "dhdgffkkebhmkfjojejmpbldmpobfkfo";} # tampermonkey
     ];
   };
 }
diff --git a/nixcfgs/users/js0ny/programs/firefox.nix b/nixcfgs/users/js0ny/programs/firefox.nix
new file mode 100644
index 0000000..b39c9f3
--- /dev/null
+++ b/nixcfgs/users/js0ny/programs/firefox.nix
@@ -0,0 +1,5 @@
+{pkgs, ...}: {
+  programs.firefox = {
+    enable = true;
+  };
+}
diff --git a/nixcfgs/users/js0ny/programs/gnome.nix b/nixcfgs/users/js0ny/programs/gnome.nix
index 63bce2e..072ef51 100644
--- a/nixcfgs/users/js0ny/programs/gnome.nix
+++ b/nixcfgs/users/js0ny/programs/gnome.nix
@@ -2,8 +2,6 @@
   home.packages = with pkgs; [
     gnome-tweaks
     sushi
-    orchis-theme
-    adwaita-qt
     gnomeExtensions.dash-to-dock
     gnomeExtensions.caffeine
     gnomeExtensions.logo-menu
@@ -32,6 +30,7 @@
       icon-theme = "Papirus";
       accent-color = "pink";
       show-battery-percentage = true;
+      cursor-theme = "Adwaita";
     };
     "org/gnome/epiphany" = {
       ask-for-default = false;
@@ -46,15 +45,14 @@
       use-custom-icon = false;
     };
     "org/gnome/shell" = {
-favorite-apps = [
-      "org.kde.dolphin.desktop"
-      "com.mitchellh.ghostty.desktop"
-      "chromium-browser.desktop"
-      "code.desktop"
-    ];
+      favorite-apps = [
+        "org.kde.dolphin.desktop"
+        "com.mitchellh.ghostty.desktop"
+        "chromium-browser.desktop"
+        "code.desktop"
+      ];
     };
-
   };
 
-  qt.style.name = "adwaita";
+  # qt.style.name = "adwaita";
 }
diff --git a/nixcfgs/users/js0ny/programs/plasma.nix b/nixcfgs/users/js0ny/programs/plasma.nix
index 89a22c3..6a704d3 100644
--- a/nixcfgs/users/js0ny/programs/plasma.nix
+++ b/nixcfgs/users/js0ny/programs/plasma.nix
@@ -1,7 +1,33 @@
 {pkgs, ...}: {
+  home.packages = with pkgs.kdePackages; [
+    yakuake
+  ];
   programs.plasma = {
     enable = true;
-    workspace.iconTheme = "Papirus";
+    session.sessionRestore.restoreOpenApplicationsOnLogin = "startWithEmptySession";
+    fonts = {
+      fixedWidth.family = "Maple Mono NF";
+      fixedWidth.pointSize = 10;
+      general.family = "LXGW Neo XiHei";
+      general.pointSize = 10;
+    };
+    krunner = {
+      position = "center";
+    };
+    workspace = {
+      iconTheme = "Papirus";
+      colorScheme = "BreezeDark";
+    };
+    kwin = {
+      virtualDesktops.number = 8;
+      titlebarButtons = {
+        left = [
+          "more-window-actions"
+          "on-all-desktops"
+          "keep-above-windows"
+        ];
+      };
+    };
     input.touchpads = [
       {
         disableWhileTyping = true;
@@ -24,19 +50,59 @@
       {
         location = "bottom";
         widgets = [
-          "org.kde.plasma.kickoff"
-          "org.kde.plasma.icontasks"
+          # "org.kde.plasma.kickoff"
+          {
+            name = "org.kde.plasma.kickoff";
+            config = {
+              General = {
+                icon = "distributor-logo-nixos";
+                alphaSort = true;
+              };
+            };
+          }
+          {
+            name = "org.kde.plasma.icontasks";
+            config = {
+              General = {
+                launchers = [
+                  "applications:org.kde.dolphin.desktop"
+                  "applications:chromium-browser.desktop"
+                  "applications:com.mitchellh.ghostty.desktop"
+                ];
+              };
+            };
+          }
           "org.kde.plasma.marginsseparator"
           "org.kde.plasma.systemtray"
+          {
+            name = "org.kde.plasma.digitalclock";
+            config = {
+              Appearance = {
+                dateFormat = "isoDate";
+                enabledCalendarPlugins = "alternatecalendar,holidaysevents";
+                firstDayOfWeek = 1;
+                selectedTimeZones = "Local,Asia/Shanghai,Europe/London";
+                showSeconds = "Always";
+                showWeekNumbers = true;
+                use24hFormat = 2;
+              };
+            };
+          }
           "org.kde.plasma.digitalclock"
+          "org.kde.plasma.showdesktop"
         ];
       }
       # Global menu at the top
       {
         location = "top";
-        height = 26;
-        widgets = ["org.kde.plasma.pager"];
+        height = 20;
+        widgets = [
+          "org.kde.plasma.pager"
+          "org.kde.plasma.windowlist"
+          "org.kde.plasma.marginsseparator"
+        ];
         opacity = "translucent";
+        hiding = "dodgewindows";
       }
     ];
   };
@@ -45,4 +111,26 @@
     accessibility.changeColors.mode = "InvertLightness";
     general.mouseMode = "TextSelect";
   };
+  programs.kate.enable = true;
+  programs.kate.editor = {
+    font = {
+      family = "Maple Mono NF";
+      pointSize = 10;
+    };
+    inputMode = "vi";
+  };
+  programs.konsole = {
+    enable = true;
+    defaultProfile = "Default";
+    profiles = {
+      Default = {
+        command = "${pkgs.fish}/bin/fish";
+        colorScheme = "Breeze";
+        font = {
+          name = "Maple Mono NF";
+          size = 12;
+        };
+      };
+    };
+  };
 }