diff --git a/.gitignore b/.gitignore
index 496b66cb..f93c69bd 100644
--- a/.gitignore
+++ b/.gitignore
@@ -55,3 +55,6 @@ yarn-debug.log*
 /yarn-error.log
 yarn-debug.log*
 .yarn-integrity
+
+/app/assets/builds/*
+!/app/assets/builds/.keep
diff --git a/Gemfile b/Gemfile
index 94a55984..41d38cba 100644
--- a/Gemfile
+++ b/Gemfile
@@ -5,6 +5,8 @@ source 'https://17.3.alpine.gems.sutty.nl'
 
 ruby '~> 3.1'
 
+gem 'foreman'
+gem 'jsbundling-rails'
 gem 'dotenv-rails', require: 'dotenv/rails-now'
 
 # Bundle edge Rails instead: gem 'rails', github: 'rails/rails'
@@ -18,7 +20,7 @@ gem 'puma'
 # XXX: Supuestamente Rails ya soporta RAILS_GROUPS, pero Bundler no.
 if ENV['RAILS_GROUPS']&.split(',')&.include? 'assets'
   gem 'sassc-rails'
-  gem 'uglifier', '>= 1.3.0'
+# gem 'uglifier', '>= 1.3.0'
   gem 'bootstrap', '~> 4'
 end
 
diff --git a/Gemfile.lock b/Gemfile.lock
index d0fbfdfd..2babd6dd 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -178,6 +178,7 @@ GEM
     fast_jsonparser (0.6.0-x86_64-linux-musl)
     ffi (1.15.5-x86_64-linux-musl)
     flamegraph (0.9.5)
+    foreman (0.87.2)
     forwardable-extended (2.6.0)
     friendly_id (5.5.0)
       activerecord (>= 4.0.0)
@@ -262,6 +263,8 @@ GEM
       sassc (> 2.0.1, < 3.0)
     jekyll-watch (2.2.1)
       listen (~> 3.0)
+    jsbundling-rails (1.1.1)
+      railties (>= 6.0.0)
     json (2.6.3-x86_64-linux-musl)
     kaminari (1.2.2)
       activesupport (>= 4.1.0)
@@ -512,8 +515,6 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (2.0.5)
       concurrent-ruby (~> 1.0)
-    uglifier (4.2.0)
-      execjs (>= 0.3.0, < 3)
     unf (0.1.4)
       unf_ext
     unf_ext (0.0.8.2-x86_64-linux-musl)
@@ -569,6 +570,7 @@ DEPENDENCIES
   fast_blank
   fast_jsonparser
   flamegraph
+  foreman
   friendly_id
   hairtrigger
   haml-lint
@@ -584,6 +586,7 @@ DEPENDENCIES
   jekyll-data
   jekyll-images
   jekyll-include-cache
+  jsbundling-rails
   kaminari
   letter_opener
   listen
@@ -627,7 +630,6 @@ DEPENDENCIES
   terminal-table
   timecop
   turbolinks (~> 5)
-  uglifier (>= 1.3.0)
   validates_hostname
   web-console
   webpacker
diff --git a/Procfile.dev b/Procfile.dev
new file mode 100644
index 00000000..000e2ed4
--- /dev/null
+++ b/Procfile.dev
@@ -0,0 +1,2 @@
+web: unset PORT && bin/rails server
+js: yarn build --watch
diff --git a/app/assets/builds/.keep b/app/assets/builds/.keep
new file mode 100644
index 00000000..e69de29b
diff --git a/app/assets/config/manifest.js b/app/assets/config/manifest.js
index b16e53d6..d333340b 100644
--- a/app/assets/config/manifest.js
+++ b/app/assets/config/manifest.js
@@ -1,3 +1,4 @@
 //= link_tree ../images
 //= link_directory ../javascripts .js
 //= link_directory ../stylesheets .css
+//= link_tree ../builds
diff --git a/app/assets/stylesheets/styles.scss b/app/assets/stylesheets/styles.scss
new file mode 100644
index 00000000..dc61b5d3
--- /dev/null
+++ b/app/assets/stylesheets/styles.scss
@@ -0,0 +1,547 @@
+$black: black;
+$white: white;
+$grey: grey;
+$cyan: #13fefe;
+$magenta: #f206f9;
+
+$colors: (
+  "black": $black,
+  "white": $white,
+  "cyan": $cyan,
+  "magenta": $magenta
+);
+
+// Redefinir variables de Bootstrap
+$primary: $magenta;
+$secondary: $black;
+$jumbotron-bg: transparent;
+$enable-rounded: false;
+$form-feedback-valid-color: $cyan;
+$form-feedback-invalid-color: $magenta;
+$form-feedback-icon-valid-color: $black;
+$component-active-bg: $magenta;
+
+$spacers: (
+  2-plus: 0.75rem
+);
+
+@import "bootstrap";
+@import "editor";
+
+.editor {
+  .editor-content {
+    figure {
+      border: 1px solid transparentize($magenta, 0.3)
+    }
+  }
+}
+
+:root {
+  --foreground: #{$black};
+  --background: #{$white};
+  --color: #{$magenta};
+}
+
+@media (prefers-color-scheme: dark) {
+  :root {
+    --foreground: #{$white};
+    --background: #{$black};
+    --color: #{$cyan};
+  }
+}
+
+// TODO: Encontrar la forma de generar esto desde los locales de Rails
+$custom-file-text: (
+  en: 'Browse',
+  es: 'Buscar archivo'
+);
+
+@font-face {
+  font-family: 'Saira';
+  font-style: normal;
+  font-weight: 500;
+  font-display: optional;
+  src: local('Saira Medium'), local('Saira-Medium'),
+    font-url('saira/v3/SairaMedium-subset.woff2') format('woff2'),
+    font-url('saira/v3/SairaMedium-subset.zopfli.woff') format('woff');
+}
+
+@font-face {
+  font-family: 'Saira';
+  font-style: normal;
+  font-weight: 700;
+  font-display: optional;
+  src: local('Saira Bold'), local('Saira-Bold'),
+    font-url('saira/v3/SairaBold-subset.woff2') format('woff2'),
+    font-url('saira/v3/SairaBold-subset.zopfli.woff') format('woff');
+}
+
+body {
+  font-family: Saira, sans-serif;
+  background-color: var(--background);
+  color: var(--foreground);
+}
+
+* {
+  .rtl,
+  &[dir=rtl] {
+    text-align: right;
+  }
+}
+
+a {
+  color: var(--color);
+
+  &:hover {
+    color: var(--color);
+  }
+
+  &[target=_blank] {
+    /* TODO: Convertir a base64 para no hacer peticiones extra */
+    &:after {
+      content: image-url('icon_external_link.png');
+    }
+  }
+}
+
+$footer-height: 60px;
+
+/* Colores */
+$purpura: #5c004d;
+$turquesa: #009389;
+$azul: #0b2660;
+$fucsia: #e9193e;
+$celeste: #91f0ff;
+$verde: #96d643;
+
+ol.breadcrumb {
+  background-color: transparent;
+}
+
+.breadcrumb-item,
+.breadcrumb-item.active,
+.table,
+.form-control,
+.custom-file-label {
+  color: var(--foreground);
+}
+
+.table tr.sticky-top,
+.form-control,
+.custom-file-label {
+  background-color: var(--background);
+}
+
+.turbolinks-progress-bar {
+  height: 3px;
+  background-color: $magenta;
+}
+
+.btn-text {
+  background-color: transparent;
+  border: none;
+}
+
+.inline {
+  display: inline;
+}
+
+.sindu_dragger table {
+  background: transparent !important;
+}
+
+.d-none, .d-block {
+  transition: all 3s;
+}
+
+.mapable,
+.taggable {
+  .input-map,
+  .input-tag {
+    legend {
+      @extend .sr-only
+    }
+
+    label {
+      margin: 0.5rem;
+    }
+
+    input {
+      vertical-align: middle;
+
+      &[type=text] {
+        @extend .form-control;
+        display: inline-block;
+        width: calc(100% - 93px);
+      }
+
+      &[type=checkbox] {
+      }
+
+      &[type=button] {
+        @extend .btn;
+        @extend .btn-info;
+        @extend .m-0;
+      }
+    }
+  }
+}
+
+svg {
+  .is-path-magenta {
+    fill: var(--foreground);
+  }
+}
+
+.btn {
+  background-color: var(--foreground);
+  color: var(--background);
+  border: none;
+  border-radius: 0;
+  margin-right: 0.3rem;
+  margin-bottom: 0.3rem;
+
+  &:hover {
+    color: var(--background);
+    background-color: var(--color);
+  }
+
+  &:active {
+    background-color: var(--color);
+  }
+
+  &:focus {
+    box-shadow: 0 0 0 0.2rem var(--color);
+  }
+}
+
+.btn-sm {
+  @extend .badge
+}
+
+.black-bg {
+  color: $white;
+  background-color: $black;
+
+  svg {
+    .is-path-magenta {
+      fill: $white
+    }
+  }
+
+  a {
+    color: $magenta;
+  }
+
+  .btn {
+    background-color: $white;
+    color: $black;
+    border: none;
+
+    &:hover {
+      color: $black;
+      background-color: $cyan;
+    }
+
+    &:active {
+      background-color: $cyan;
+    }
+
+    &:focus {
+      box-shadow: 0 0 0 0.2rem $cyan;
+    }
+  }
+
+  .breadcrumb-item {
+    color: $white;
+  }
+}
+
+::-moz-selection,
+::selection {
+  background: var(--color);
+  color: var(--background);
+}
+
+.black-bg {
+  ::selection,
+  ::-moz-selection {
+    background-color: $magenta;
+    color: $white;
+  }
+}
+
+.handle {
+  img {
+    height: 1rem;
+  }
+}
+
+.custom-control-label {
+  font-weight: bold;
+}
+
+.designs {
+  .design {
+    margin-top: 1rem;
+  }
+}
+
+.editor {
+  .ProseMirror-menubar {
+    min-height: 32px;
+    color: var(--color);
+    background-color: var(--background);
+    border: none;
+
+    .ProseMirror-menu-active {
+      border-radius: unset;
+      color: var(--color);
+    }
+  }
+
+  .ProseMirror {
+    @extend .form-control;
+
+    height: auto;
+  }
+}
+
+.vh-100 {
+  height: 100vh !important;
+}
+
+// Viene de sutty-base-jekyll-theme
+$prefixes: ("", "-webkit-", "-ms-", "-o-", "-moz-");
+$overflows: auto, hidden, scroll;
+
+/*
+ * Usar en animaciones, empiezan rápido y desaceleran hacia el final.
+ */
+$bezier: cubic-bezier(0.75, 0, 0.25, 1);
+
+/*
+ * Ocultar la barra de scroll, útil para sliders horizontales.
+ */
+.no-scrollbar {
+  scrollbar-width: none;
+  -webkit-overflow-scrolling: touch;
+
+  &::-webkit-scrollbar { display: none; }
+}
+
+@each $cursor in (pointer none) {
+  .cursor-#{$cursor} {
+    cursor: $cursor;
+  }
+}
+
+@each $direction in (top, right, bottom, left) {
+  .#{$direction}-0 {
+    #{$direction}: 0
+  }
+}
+
+@each $value in $overflows {
+  .overflow-#{$value} { overflow: $value !important; }
+}
+
+@each $axis in (y, x) {
+  @each $value in $overflows {
+    .overflow-#{$axis}-#{$value} { overflow-#{$axis}: $value !important; }
+  }
+}
+
+/*
+ * Poder aumentar o disminuir el alto de la tipografía, se usa de la
+ * misma forma que los modificadores de padding y margin.
+ */
+@each $size, $length in $spacers {
+  .f-#{$size} {
+    font-size: $length !important;
+  }
+
+  .text-column-#{$size} {
+    column-count: $size;
+  }
+
+  .line-clamp-#{$size} {
+    overflow: hidden;
+    display: -webkit-box;
+    -webkit-line-clamp: $size;
+    -webkit-box-orient: vertical;
+  }
+}
+
+/*
+ * Modificadores de Bootstrap que no tienen versión responsive.
+ */
+@each $grid-breakpoint, $_ in $grid-breakpoints {
+  @include media-breakpoint-up($grid-breakpoint) {
+    // border
+    .border-#{$grid-breakpoint}         { border: $border-width solid $border-color !important; }
+    .border-#{$grid-breakpoint}-top     { border-top: $border-width solid $border-color !important; }
+    .border-#{$grid-breakpoint}-right   { border-right: $border-width solid $border-color !important; }
+    .border-#{$grid-breakpoint}-bottom  { border-bottom: $border-width solid $border-color !important; }
+    .border-#{$grid-breakpoint}-left    { border-left: $border-width solid $border-color !important; }
+    .border-#{$grid-breakpoint}-0        { border: 0 !important; }
+    .border-#{$grid-breakpoint}-top-0    { border-top: 0 !important; }
+    .border-#{$grid-breakpoint}-right-0  { border-right: 0 !important; }
+    .border-#{$grid-breakpoint}-bottom-0 { border-bottom: 0 !important; }
+    .border-#{$grid-breakpoint}-left-0   { border-left: 0 !important; }
+
+    // alineación
+    .text-#{$grid-breakpoint}-left   { text-align: left !important; }
+    .text-#{$grid-breakpoint}-right  { text-align: right !important; }
+    .text-#{$grid-breakpoint}-center { text-align: center !important; }
+
+    // posición
+    @each $position in $positions {
+      .position-#{$grid-breakpoint}-#{$position} { position: $position !important; }
+    }
+
+    // anchos y altos
+    @each $prop, $abbrev in (width: w, height: h) {
+      @each $size, $length in $sizes {
+        .#{$abbrev}-#{$grid-breakpoint}-#{$size} { #{$prop}: $length !important; }
+      }
+    }
+
+    // versión responsive de f
+    @each $size, $length in $spacers {
+      .f-#{$grid-breakpoint}-#{$size} {
+        font-size: $length !important;
+      }
+
+      .text-column-#{$grid-breakpoint}-#{$size} {
+        column-count: $size;
+      }
+    }
+  }
+}
+
+/*
+ * Crea una propiedad con prefijos de navegador
+ */
+@mixin vendor-prefix($property, $definition...) {
+  @each $prefix in $prefixes {
+    #{$prefix}$property: $definition;
+  }
+}
+
+/*
+ * Crea clases para asignar colores según la lista de colores.
+ */
+@each $color, $_ in $colors {
+  .background-#{$color} {
+    background-color: var(--#{$color});
+
+    &:focus {
+      background-color: var(--#{$color});
+    }
+  }
+
+  .scrollbar-#{$color} {
+    scrollbar-color: var(--#{$color}) transparent;
+    scrollbar-width: thin;
+
+    &::-webkit-scrollbar {
+      width: 5px;
+      height: 8px;
+      background-color: transparent;
+    }
+
+    &::-webkit-scrollbar-thumb {
+      background: var(--#{$color});
+    }
+  }
+
+  .border-#{$color} {
+    border-color: var(--#{$color}) !important;
+  }
+
+  .hover-bg-#{$color} {
+    &:hover {
+      background-color: var(--#{$color});
+    }
+  }
+
+  .hover-#{$color} {
+    &:hover {
+      color: var(--#{$color});
+    }
+  }
+
+  .#{$color} {
+    color: var(--#{$color});
+
+    &:focus {
+      color: var(--#{$color});
+    }
+
+    ::-moz-selection,
+    ::selection {
+      background: var(--#{$color});
+      color: white;
+    }
+
+    svg {
+      * {
+        fill: var(--#{$color});
+      }
+    }
+
+    .form-control {
+      border-color: var(--#{$color});
+      color: var(--#{$color});
+    }
+
+    hr {
+      border-color: var(--#{$color});
+    }
+
+    a {
+      color: var(--#{$color});
+    }
+  }
+}
+
+@import "new_editor";
+
+.new-editor {
+  .editor {
+    table {
+      @extend .table;
+      @extend .table-responsive;
+    }
+  }
+}
+
+.content {
+  p { min-height: $font-size-base * $line-height-base; }
+  h1 { min-height: $h1-font-size * $headings-line-height; }
+  h2 { min-height: $h2-font-size * $headings-line-height; }
+  h3 { min-height: $h3-font-size * $headings-line-height; }
+  h4 { min-height: $h4-font-size * $headings-line-height; }
+  h5 { min-height: $h5-font-size * $headings-line-height; }
+  h6 { min-height: $h6-font-size * $headings-line-height; }
+
+  iframe { border: 0; }
+
+  audio { width: 100%; }
+
+  img,
+  video,
+  iframe {
+    @extend .img-fluid;
+    height: auto;
+  }
+
+  & > * {
+    margin-bottom: 1rem;
+
+    &:last-child {
+      margin-bottom: 0;
+    }
+  }
+}
diff --git a/app/javascript/application.js b/app/javascript/application.js
new file mode 100644
index 00000000..827e70fa
--- /dev/null
+++ b/app/javascript/application.js
@@ -0,0 +1,24 @@
+/* eslint no-console:0 */
+
+import { Notifier } from '@airbrake/browser'
+
+window.airbrake = new Notifier({
+  projectId: window.env.AIRBRAKE_SITE_ID,
+  projectKey: window.env.AIRBRAKE_API_KEY,
+  host: window.env.PANEL_URL
+})
+
+import './controllers'
+import './editor/editor'
+import 'fork-awesome/css/fork-awesome.css'
+import './etc'
+
+import Rails from '@rails/ujs'
+import Turbolinks from 'turbolinks'
+import * as ActiveStorage from '@rails/activestorage'
+import 'chartkick/chart.js'
+
+Rails.start()
+Turbolinks.start()
+ActiveStorage.start()
+import * as bootstrap from "bootstrap"
diff --git a/app/javascript/controllers/index.js b/app/javascript/controllers/index.js
index 6f53d84b..73605112 100644
--- a/app/javascript/controllers/index.js
+++ b/app/javascript/controllers/index.js
@@ -2,8 +2,12 @@
 // Controller files must be named *_controller.js.
 
 import { Application } from "stimulus"
-import { definitionsFromContext } from "stimulus/webpack-helpers"
 
 const application = Application.start()
-const context = require.context("controllers", true, /_controller\.js$/)
-application.load(definitionsFromContext(context))
+
+import GeoController from "./geo_controller";
+import ReorderController from "./reorder_controller";
+
+application.register("geo", GeoController);
+application.register("reorder", ReorderController);
+
diff --git a/app/views/layouts/application.html.haml b/app/views/layouts/application.html.haml
index 85d5ab22..343e3b0b 100644
--- a/app/views/layouts/application.html.haml
+++ b/app/views/layouts/application.html.haml
@@ -13,9 +13,8 @@
 
     %script{ type: 'text/javascript', src: '/env.js' }
     = csrf_meta_tags
-    = stylesheet_link_tag 'application', media: 'all', 'data-turbolinks-track': 'reload'
-    = javascript_pack_tag 'application', 'data-turbolinks-track': 'reload'
-    = stylesheet_pack_tag 'application', 'data-turbolinks-track': 'reload'
+    = javascript_include_tag 'application', 'data-turbo-track': 'reload', defer: true
+    = stylesheet_link_tag 'styles', media: 'all', 'data-turbo-track': 'reload'
     = favicon_link_tag 'sutty_cuadrada.png', rel: 'apple-touch-icon', type: 'image/png'
 
   %body{ class: yield(:body) }
diff --git a/bin/dev b/bin/dev
new file mode 100755
index 00000000..74ade166
--- /dev/null
+++ b/bin/dev
@@ -0,0 +1,8 @@
+#!/usr/bin/env sh
+
+if ! gem list foreman -i --silent; then
+  echo "Installing foreman..."
+  gem install foreman
+fi
+
+exec foreman start -f Procfile.dev "$@"
diff --git a/config/environments/development.rb b/config/environments/development.rb
index 8cca135d..94ef1727 100644
--- a/config/environments/development.rb
+++ b/config/environments/development.rb
@@ -61,7 +61,7 @@ Rails.application.configure do
   # Debug mode disables concatenation and preprocessing of assets.
   # This option may cause significant delays in view rendering with a large
   # number of complex assets.
-  config.assets.debug = true
+  config.assets.debug = false
 
   # Suppress logger output for asset requests.
   config.assets.quiet = true
diff --git a/package.json b/package.json
index 0e82e2d9..a0224155 100644
--- a/package.json
+++ b/package.json
@@ -10,6 +10,7 @@
     "chart.js": "^3.5.1",
     "chartkick": "^4.0.5",
     "commonmark": "^0.30.0",
+    "esbuild": "^0.16.12",
     "fork-awesome": "^1.1.7",
     "input-map": "git+https://0xacab.org/sutty/input-map.git",
     "input-tag": "git+https://0xacab.org/sutty/input-tag.git",
@@ -17,6 +18,7 @@
     "prosemirror-example-setup": "^1.1.2",
     "prosemirror-markdown": "^1.4.5",
     "prosemirror-schema-basic": "^1.1.2",
+    "punycode": "^2.1.1",
     "stimulus": "^1.1.1",
     "turbolinks": "^5.2.0",
     "typescript": "^4.1.5",
@@ -24,5 +26,8 @@
   },
   "devDependencies": {
     "@types/rails__activestorage": "^6.0.0"
+  },
+  "scripts": {
+    "build": "esbuild app/javascript/*.* --bundle --sourcemap --outdir=app/assets/builds --public-path=assets --loader:.png=file --loader:.jpg=file --loader:.woff2=file"
   }
 }