diff --git a/Gemfile b/Gemfile
index 3405056..ccb4d01 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,7 @@ source "https://rubygems.org"
 # Development
 group :development do
   gem "irb"
+  gem "dotenv"
 end
 
 # Base
diff --git a/Gemfile.lock b/Gemfile.lock
index 29782aa..e31afc5 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -5,6 +5,7 @@ GEM
     bigdecimal (4.1.3)
     commonmarker (2.10.1-x86_64-linux)
     date (3.6.0)
+    dotenv (3.2.0)
     erb (6.0.7)
     erubi (1.13.1)
     io-console (0.9.4)
@@ -67,6 +68,7 @@ PLATFORMS
 DEPENDENCIES
   bcrypt
   commonmarker
+  dotenv
   erubi
   irb
   mail
@@ -82,6 +84,7 @@ CHECKSUMS
   bigdecimal (4.1.3) sha256=61ebe1e5e559bdc3cc6f2c0ee7f427321fc838f59611c294356eb04d6e21cf66
   commonmarker (2.10.1-x86_64-linux) sha256=4b2c4b9084baca131146c92dde02bcb40ef3d2768a6772648c1970bb51842734
   date (3.6.0) sha256=18ac945c4e24ebd93534f8eab8c2fd8c5604b3e977105b3798d62a1e8d27b580
+  dotenv (3.2.0) sha256=e375b83121ea7ca4ce20f214740076129ab8514cd81378161f11c03853fe619d
   erb (6.0.7) sha256=c5ca6dc25b0ef974a44dc8f59fe847577122483b1968a38dec305c60bf91ee92
   erubi (1.13.1) sha256=a082103b0885dbc5ecf1172fede897f9ebdb745a4b97a5e8dc63953db1ee4ad9
   io-console (0.9.4) sha256=a403304f32928ee85e56d457b4612ca43f2703b561a3258844992bd24085fbb1
diff --git a/config/boot.rb b/config/boot.rb
new file mode 100644
index 0000000..54f3bde
--- /dev/null
+++ b/config/boot.rb
@@ -0,0 +1,4 @@
+if ENV.fetch("RACK_ENV", "development") == "development"
+  require "dotenv"
+  Dotenv.load(File.expand_path("../.env", __dir__))
+end
diff --git a/netig.rb b/netig.rb
index a6a3f38..746d166 100644
--- a/netig.rb
+++ b/netig.rb
@@ -1,13 +1,18 @@
+# Initialisation de l'environnement
+require_relative "config/boot"
+
+# Dépendances externes
 require "roda"
 require "rodauth"
 
+# Composants de l'application
 require_relative "lib/database"
 require_relative "config/mail"
 require_relative "lib/contact_form"
 require_relative "lib/contact_mailer"
 require_relative "lib/document_renderer"
 
-# Application et plugins Roda
+# Configuration de Roda
 class Netig < Roda
   plugin :render, escape: true
   plugin :public
@@ -18,15 +23,15 @@ class Netig < Roda
   plugin :flash
 end
 
-# Authentification
+# Configuration de l'authentification
 require_relative "config/rodauth"
 
-# Autorisations et routes secondaires
+# Autorisations et routes dédiées
 require_relative "lib/authorization"
 require_relative "routes/noyau"
 require_relative "routes/contact"
 
-# Routes principales
+# Routes des pages publiques
 class Netig
   route do |r|
     r.rodauth