diff --git a/web/src/main/resources/static/css/app.css b/web/src/main/resources/static/css/app.css
index cbe45a2..43d8975 100644
--- a/web/src/main/resources/static/css/app.css
+++ b/web/src/main/resources/static/css/app.css
@@ -81,37 +81,18 @@ a:not(.btn):hover { color: var(--c-accent-hover); }
 
 /* Layout */
 .page { display: flex; flex-direction: column; min-height: 100vh; }
-.page-header { position: sticky; top: 0; z-index: 10; border-bottom: 1px solid var(--c-border); background: var(--c-surface); }
-.page-header-inner { max-width: 1200px; margin: 0 auto; display: flex; align-items: center; gap: 0.5rem 1.75rem; flex-wrap: wrap; padding: 0.875rem 1.75rem; }
-@media (max-width: 640px) {
-    .page-header-inner { padding: 0.5rem 0.875rem; gap: 0.5rem 1rem; }
-    .nav { gap: 0.5rem 0.75rem; flex-wrap: wrap; }
-    .user { gap: 0.5rem; }
-    .nav-user { max-width: 100%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
-}
+        }
 .page-main { flex: 1; width: 100%; max-width: 1200px; margin: 0 auto; padding: 2.5rem 1.75rem 3.5rem; }
 @media (max-width: 720px) { .page-main { padding: 1.5rem 0.875rem 2.5rem; } }
 .page-footer { text-align: center; color: var(--c-text-muted); font-size: 0.75rem; padding: 1.5rem; }
 
-/* Nav */
-.nav { display: flex; align-items: center; gap: 1.125rem; flex: 1 1 auto; flex-wrap: wrap; font-size: 0.84375rem; }
-.nav-link { color: var(--c-accent); text-decoration: none; font-weight: 500; }
-.nav-link:hover { color: var(--c-accent-hover); }
-.nav-link.active { color: var(--c-accent); font-weight: 700; }
-.nav-sep { color: var(--c-text-muted); }
-.logo { font-size: 1rem; font-weight: 700; color: var(--c-text); text-decoration: none; letter-spacing: -0.01em; }
-.logo b { color: var(--c-accent); }
 .user { display: flex; align-items: center; gap: 0.75rem; font-size: 0.84375rem; margin-left: auto; }
 .nav-user { font-weight: 500; color: var(--c-text); }
-.nav-user:hover { color: var(--c-accent); }
-.nav-user.defense-active { color: var(--c-accent); }
-.nav-user.defense-active::before { content: ""; display: inline-block; width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--c-accent); margin-right: 0.4rem; vertical-align: middle; }
 .score-big { display: inline-block; margin-left: 0.5rem; font-size: 1.75rem; font-weight: 700; line-height: 1; color: var(--c-tone-pos); font-variant-numeric: tabular-nums; vertical-align: middle; }
 .variant-name { font-weight: 600; }
 .variant-name b { font-variant-numeric: tabular-nums; }
 p { margin-top: 0; }
 .theme-btn { display: inline-flex; align-items: center; justify-content: center; padding: 0.3rem 0.5rem; }
-.theme-icon { width: 1.05rem; height: 1.05rem; display: block; }
 .breadcrumb { display: flex; flex-wrap: wrap; align-items: center; gap: 0.35rem; }
 .breadcrumb .nav-sep { user-select: none; }
 .check-list { display: flex; flex-direction: column; gap: 0.25rem; margin-top: 0.25rem; max-height: 12rem; overflow-y: auto; }
@@ -148,35 +129,51 @@ p { margin-top: 0; }
 .hint { margin-top: 0.25rem; font-size: 0.75rem; color: var(--c-text-muted); }
 
 
-/* ---- Icons: SVG-файлы из /icons, подключаются CSS-масками (цвет = currentColor) ---- */
-.ico {
-    display: inline-block; flex: 0 0 auto;
-    background-color: currentColor;
-    -webkit-mask-position: center; mask-position: center;
-    -webkit-mask-repeat: no-repeat; mask-repeat: no-repeat;
-    -webkit-mask-size: contain; mask-size: contain;
+
+/* ===== B3-тема поверх Bootstrap: navbar, offcanvas, кнопки, ссылки ===== */
+.b3-navbar { background: var(--c-surface); border-bottom: 1px solid var(--c-border); }
+.b3-navbar .container, .page-main.container { max-width: 1200px; }
+.b3-navbar .navbar-brand { color: var(--c-text); font-weight: 700; font-size: 1rem; }
+.b3-navbar .navbar-brand b { color: var(--c-accent); }
+.b3-navbar .navbar-toggler { border: 1px solid var(--c-border-strong); color: var(--c-accent); padding: 0.25rem 0.5rem; line-height: 1; }
+.b3-navbar .navbar-toggler:focus { box-shadow: none; }
+.nav-link { --bs-nav-link-color: var(--c-accent); --bs-nav-link-hover-color: var(--c-accent-hover); font-weight: 500; font-size: 0.875rem; }
+.nav-link.active { color: var(--c-accent) !important; font-weight: 700; }
+.navbar-close { border: 0; background: none; color: var(--c-text-muted); font-size: 1.1rem; line-height: 1; }
+.navbar-close:hover { color: var(--c-text); }
+#mobileNav { --bs-offcanvas-width: 17rem; --bs-offcanvas-bg: var(--c-surface); --bs-offcanvas-color: var(--c-text); --bs-offcanvas-border-color: var(--c-border); }
+#mobileNav .offcanvas-header { border-bottom: 1px solid var(--c-border); }
+#mobileNav .navbar-nav { gap: 0.25rem; }
+#mobileNav .nav-link { padding: 0.5rem 0.25rem; font-size: 1rem; }
+@media (max-width: 767.98px) {
+    #mobileNav .offcanvas-body { display: flex; flex-direction: column; justify-content: space-between; gap: 1rem; }
 }
-.ico-eye-open { -webkit-mask-image: url('../icons/eye-open.svg'); mask-image: url('../icons/eye-open.svg'); }
-.ico-eye-closed { -webkit-mask-image: url('../icons/eye-closed.svg'); mask-image: url('../icons/eye-closed.svg'); }
-.ico-pencil { -webkit-mask-image: url('../icons/pencil.svg'); mask-image: url('../icons/pencil.svg'); }
-.ico-hand { -webkit-mask-image: url('../icons/hand.svg'); mask-image: url('../icons/hand.svg'); }
-.ico-trash { -webkit-mask-image: url('../icons/trash.svg'); mask-image: url('../icons/trash.svg'); }
-.ico-menu { -webkit-mask-image: url('../icons/menu.svg'); mask-image: url('../icons/menu.svg'); }
-.ico-chevron-down { -webkit-mask-image: url('../icons/chevron-down.svg'); mask-image: url('../icons/chevron-down.svg'); }
-.ico-theme { -webkit-mask-image: url('../icons/theme.svg'); mask-image: url('../icons/theme.svg'); }
-.ico-md-bold { -webkit-mask-image: url('../icons/md-bold.svg'); mask-image: url('../icons/md-bold.svg'); }
-.ico-md-italic { -webkit-mask-image: url('../icons/md-italic.svg'); mask-image: url('../icons/md-italic.svg'); }
-.ico-md-h2 { -webkit-mask-image: url('../icons/md-h2.svg'); mask-image: url('../icons/md-h2.svg'); }
-.ico-md-ul { -webkit-mask-image: url('../icons/md-ul.svg'); mask-image: url('../icons/md-ul.svg'); }
-.ico-md-ol { -webkit-mask-image: url('../icons/md-ol.svg'); mask-image: url('../icons/md-ol.svg'); }
-.ico-md-quote { -webkit-mask-image: url('../icons/md-quote.svg'); mask-image: url('../icons/md-quote.svg'); }
-.ico-md-link { -webkit-mask-image: url('../icons/md-link.svg'); mask-image: url('../icons/md-link.svg'); }
-.ico-md-code { -webkit-mask-image: url('../icons/md-code.svg'); mask-image: url('../icons/md-code.svg'); }
-.ico-md-codeblock { -webkit-mask-image: url('../icons/md-codeblock.svg'); mask-image: url('../icons/md-codeblock.svg'); }
-.ico-md-table { -webkit-mask-image: url('../icons/md-table.svg'); mask-image: url('../icons/md-table.svg'); }
-.ico-md-figure { -webkit-mask-image: url('../icons/md-figure.svg'); mask-image: url('../icons/md-figure.svg'); }
-.ico-md-video { -webkit-mask-image: url('../icons/md-video.svg'); mask-image: url('../icons/md-video.svg'); }
-.ico-md-spoiler { -webkit-mask-image: url('../icons/md-spoiler.svg'); mask-image: url('../icons/md-spoiler.svg'); }
+.nav-user { font-weight: 500; color: var(--c-accent); text-decoration: none; }
+.nav-user:hover { color: var(--c-accent-hover); }
+.nav-user.defense-active::before { content: ""; display: inline-block; width: 0.5rem; height: 0.5rem; border-radius: 50%; background: var(--c-accent); margin-right: 0.4rem; vertical-align: middle; }
+.page-main { padding: 2.5rem 1.75rem 3.5rem; }
+@media (max-width: 720px) { .page-main { padding: 1.5rem 0.875rem 2.5rem; } }
+
+/* Кнопки: B3-палитра через переменные Bootstrap */
+.btn {
+    --bs-btn-bg: var(--c-accent); --bs-btn-border-color: var(--c-accent); --bs-btn-color: #ffffff;
+    --bs-btn-hover-bg: var(--c-accent-hover); --bs-btn-hover-border-color: var(--c-accent-hover); --bs-btn-hover-color: #ffffff;
+    --bs-btn-active-bg: #6a1d2c; --bs-btn-active-border-color: #6a1d2c; --bs-btn-active-color: #ffffff;
+    --bs-btn-disabled-bg: var(--c-accent); --bs-btn-disabled-border-color: var(--c-accent); --bs-btn-disabled-color: #ffffff;
+    --bs-btn-font-size: 0.8125rem; --bs-btn-padding-y: 0.5rem; --bs-btn-padding-x: 1rem;
+    --bs-btn-border-radius: var(--radius);
+}
+.btn-primary { --bs-btn-bg: var(--c-accent); --bs-btn-border-color: var(--c-accent); --bs-btn-color: #ffffff;
+    --bs-btn-hover-bg: var(--c-accent-hover); --bs-btn-hover-border-color: var(--c-accent-hover); --bs-btn-hover-color: #ffffff;
+    --bs-btn-active-bg: #6a1d2c; --bs-btn-active-border-color: #6a1d2c; --bs-btn-active-color: #ffffff; }
+.btn-secondary { --bs-btn-bg: var(--c-surface); --bs-btn-border-color: var(--c-border-strong); --bs-btn-color: var(--c-text);
+    --bs-btn-hover-bg: var(--c-bg); --bs-btn-hover-border-color: var(--c-border-strong); --bs-btn-hover-color: var(--c-text);
+    --bs-btn-active-bg: var(--c-bg); --bs-btn-active-border-color: var(--c-border-strong); --bs-btn-active-color: var(--c-text); }
+.btn-danger { --bs-btn-bg: var(--c-surface); --bs-btn-border-color: #dcb9be; --bs-btn-color: var(--c-accent);
+    --bs-btn-hover-bg: var(--c-accent-soft); --bs-btn-hover-border-color: var(--c-accent); --bs-btn-hover-color: var(--c-accent);
+    --bs-btn-active-bg: var(--c-accent-soft); --bs-btn-active-border-color: var(--c-accent); --bs-btn-active-color: var(--c-accent); }
+.btn-sm { --bs-btn-padding-y: 0.25rem; --bs-btn-padding-x: 0.6rem; --bs-btn-font-size: 0.75rem; }
+a { --bs-link-color: var(--c-accent); --bs-link-hover-color: var(--c-accent-hover); text-decoration: none; }
 
 /* Cards */
 .card { border-radius: var(--radius-lg); background: var(--c-surface); border: 1px solid var(--c-border); }
@@ -497,7 +494,7 @@ dialog.dlg.dlg-lg .dlg-body { max-height: 88vh; min-height: 62vh; }
     background: none; cursor: pointer; color: var(--c-text-muted);
 }
 .sub-toggle:hover { color: var(--c-text); }
-.sub-arrow .ico { width: 1rem; height: 1rem; }
+.sub-arrow i { font-size: 1rem; line-height: 1; }
 .sub-arrow { transform: rotate(0deg); transition: transform 0.2s; }
 .sub-acc.collapsed .sub-arrow { transform: rotate(0deg); }
 .sub-acc:not(.collapsed) .sub-arrow { transform: rotate(180deg); }
@@ -588,9 +585,7 @@ dialog.dlg.dlg-lg .dlg-body { max-height: 88vh; min-height: 62vh; }
 .actions-col .inline-form { display: block; width: 100%; }
 .actions-col .btn { display: block; width: 100%; text-align: center; }
 /* Иконки — SVG-файлы из /icons через CSS-маски: цвет наследуется от текста */
-.cell-ico {
-    width: 0.95rem; height: 0.95rem; display: block;
-}
+.cell-ico { font-size: 0.95rem; line-height: 1; }
 
 /* tablekit: сортируемые таблицы и поиск */
 th.th-sortable { cursor: pointer; user-select: none; }
@@ -671,9 +666,7 @@ th.th-filterable { padding-bottom: 0.35rem; }
 .md-btn:hover { background: var(--c-surface); border-color: var(--c-border); }
 .md-btn:active { transform: translateY(1px); }
 .md-btn:focus-visible { outline: 2px solid var(--c-text-link); outline-offset: 1px; }
-.md-ico {
-    width: 1.15rem; height: 1.15rem;
-}
+.md-ico { font-size: 1.15rem; line-height: 1; }
 .md-sep { width: 1px; align-self: stretch; margin: 0.2rem 0.3rem; background: var(--c-border); }
 .md-editor-head {
     display: flex; align-items: center; justify-content: space-between; gap: 0.75rem;
@@ -746,19 +739,4 @@ th.th-filterable { padding-bottom: 0.35rem; }
     .sort-row .sort-title { flex: 1 1 auto; }
 }
 
-/* ---- Мобильное меню: бургер в хэдере, сайдбар справа (BS offcanvas) ---- */
-.nav-burger { display: none; }
-#mobile-nav { --bs-offcanvas-width: 17rem; --bs-offcanvas-bg: var(--c-surface); --bs-offcanvas-border-color: var(--c-border); --bs-offcanvas-zindex: 120; }
-#mobile-nav .mobile-nav-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1rem; }
-#mobile-nav .mobile-nav-links { display: flex; flex-direction: column; gap: 0.25rem; }
-#mobile-nav .nav-link { padding: 0.5rem 0.25rem; font-size: 1rem; }
-#mobile-nav .mobile-nav-user { display: flex; flex-direction: column; gap: 0.75rem; margin-top: auto; padding-top: 1rem; border-top: 1px solid var(--c-border); }
-.mobile-nav-overlay { position: fixed; inset: 0; z-index: 1040; background: rgba(0, 0, 0, 0.45); }
-html.nav-open, html.nav-open body { overflow: hidden; }
 
-@media (max-width: 720px) {
-    .nav { display: none; }
-    .page-header .user { display: none; }
-    .page-header .theme-btn { margin-left: auto; }
-    .nav-burger { display: inline-flex; }
-}
diff --git a/web/src/main/resources/static/css/bootstrap-icons.min.css b/web/src/main/resources/static/css/bootstrap-icons.min.css
new file mode 100644
index 0000000..dadd6dc
--- /dev/null
+++ b/web/src/main/resources/static/css/bootstrap-icons.min.css
@@ -0,0 +1,5 @@
+/*!
+ * Bootstrap Icons v1.11.3 (https://icons.getbootstrap.com/)
+ * Copyright 2019-2024 The Bootstrap Authors
+ * Licensed under MIT (https://github.com/twbs/icons/blob/main/LICENSE)
+ */@font-face{font-display:block;font-family:bootstrap-icons;src:url("fonts/bootstrap-icons.woff2?dd67030699838ea613ee6dbda90effa6") format("woff2"),url("fonts/bootstrap-icons.woff?dd67030699838ea613ee6dbda90effa6") format("woff")}.bi::before,[class*=" 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diff --git a/web/src/main/resources/static/icons/md-italic.svg b/web/src/main/resources/static/icons/md-italic.svg
deleted file mode 100644
index 642cccc..0000000
--- a/web/src/main/resources/static/icons/md-italic.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 5h6M7 19h6M15 5l-4 14"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-link.svg b/web/src/main/resources/static/icons/md-link.svg
deleted file mode 100644
index dc0bc18..0000000
--- a/web/src/main/resources/static/icons/md-link.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M10.5 13.5a4 4 0 0 1 0-5.66l2.12-2.12a4 4 0 0 1 5.66 5.66l-1.2 1.2"/><path d="M13.5 10.5a4 4 0 0 1 0 5.66l-2.12 2.12a4 4 0 0 1-5.66-5.66l1.2-1.2"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-ol.svg b/web/src/main/resources/static/icons/md-ol.svg
deleted file mode 100644
index 35ef220..0000000
--- a/web/src/main/resources/static/icons/md-ol.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M11 6h9M11 12h9M11 18h9"/><text x="3" y="8.4" font-size="7.5" fill="currentColor" stroke="none" font-family="system-ui, sans-serif">1</text><text x="3" y="14.4" font-size="7.5" fill="currentColor" stroke="none" font-family="system-ui, sans-serif">2</text><text x="3" y="20.4" font-size="7.5" fill="currentColor" stroke="none" font-family="system-ui, sans-serif">3</text></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-quote.svg b/web/src/main/resources/static/icons/md-quote.svg
deleted file mode 100644
index f763bcf..0000000
--- a/web/src/main/resources/static/icons/md-quote.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M5 6v12" stroke-width="3"/><path d="M10 8h9M10 12h9M10 16h6"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-spoiler.svg b/web/src/main/resources/static/icons/md-spoiler.svg
deleted file mode 100644
index 95ed6fb..0000000
--- a/web/src/main/resources/static/icons/md-spoiler.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M3 3l18 18"/><path d="M10.6 6.2A9.7 9.7 0 0 1 12 6c5 0 9 6 9 6a15.4 15.4 0 0 1-3.5 4M6.4 8.1A15.3 15.3 0 0 0 3 12s4 6 9 6a9.6 9.6 0 0 0 3.1-.5"/><path d="M9.9 9.9a3 3 0 0 0 4.2 4.2"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-table.svg b/web/src/main/resources/static/icons/md-table.svg
deleted file mode 100644
index 4ec3880..0000000
--- a/web/src/main/resources/static/icons/md-table.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><rect x="3" y="5" width="18" height="14" rx="2"/><path d="M3 9.7h18M9 9.7V19M15 9.7V19M3 14.3h18"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-ul.svg b/web/src/main/resources/static/icons/md-ul.svg
deleted file mode 100644
index b6c955d..0000000
--- a/web/src/main/resources/static/icons/md-ul.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M9 6h11M9 12h11M9 18h11"/><circle cx="4.6" cy="6" r="1.4" fill="currentColor" stroke="none"/><circle cx="4.6" cy="12" r="1.4" fill="currentColor" stroke="none"/><circle cx="4.6" cy="18" r="1.4" fill="currentColor" stroke="none"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/md-video.svg b/web/src/main/resources/static/icons/md-video.svg
deleted file mode 100644
index 0382904..0000000
--- a/web/src/main/resources/static/icons/md-video.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><rect x="3" y="5" width="18" height="14" rx="2"/><path d="M10 9.5l5 2.5-5 2.5z" fill="currentColor" stroke="none"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/menu.svg b/web/src/main/resources/static/icons/menu.svg
deleted file mode 100644
index 3949348..0000000
--- a/web/src/main/resources/static/icons/menu.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M4 6h16M4 12h16M4 18h16"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/pencil.svg b/web/src/main/resources/static/icons/pencil.svg
deleted file mode 100644
index 82e871e..0000000
--- a/web/src/main/resources/static/icons/pencil.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><path d="M17 3a2.8 2.8 0 1 1 4 4L7.5 20.5 2 22l1.5-5.5Z"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/theme.svg b/web/src/main/resources/static/icons/theme.svg
deleted file mode 100644
index 93dffe0..0000000
--- a/web/src/main/resources/static/icons/theme.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><circle cx="12" cy="12" r="5" fill="currentColor" stroke="none"/><circle cx="12" cy="12" r="5" fill="none" stroke="currentColor" stroke-width="1.6"/><g stroke="currentColor" stroke-width="1.6" stroke-linecap="round"><line x1="12" y1="1.4" x2="12" y2="3.2"/><line x1="12" y1="20.8" x2="12" y2="22.6"/><line x1="1.4" y1="12" x2="3.2" y2="12"/><line x1="20.8" y1="12" x2="22.6" y2="12"/><line x1="4.5" y1="4.5" x2="5.8" y2="5.8"/><line x1="18.2" y1="18.2" x2="19.5" y2="19.5"/><line x1="4.5" y1="19.5" x2="5.8" y2="18.2"/><line x1="18.2" y1="5.8" x2="19.5" y2="4.5"/></g></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/icons/trash.svg b/web/src/main/resources/static/icons/trash.svg
deleted file mode 100644
index 0562172..0000000
--- a/web/src/main/resources/static/icons/trash.svg
+++ /dev/null
@@ -1 +0,0 @@
-<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"><polyline points="3 6 5 6 21 6"/><path d="M19 6l-1 14a2 2 0 0 1-2 2H8a2 2 0 0 1-2-2L5 6"/><path d="M10 11v6"/><path d="M14 11v6"/><path d="M9 6V4a1 1 0 0 1 1-1h4a1 1 0 0 1 1 1v2"/></svg>
\ No newline at end of file
diff --git a/web/src/main/resources/static/js/app.js b/web/src/main/resources/static/js/app.js
index 31b6ce7..10497f3 100644
--- a/web/src/main/resources/static/js/app.js
+++ b/web/src/main/resources/static/js/app.js
@@ -84,7 +84,7 @@
     /* Активный пункт меню */
     function initNavActive() {
         var path = window.location.pathname;
-        var links = [].slice.call(document.querySelectorAll('#top-nav .nav-link, #mobile-nav .nav-link'));
+        var links = [].slice.call(document.querySelectorAll('.b3-navbar .nav-link'));
         var bestHref = null;
         var bestLen = -1;
         links.forEach(function (a) {
@@ -241,34 +241,6 @@
         else if (kind === 'comment-add' && typeof window.csRow === 'function') window.csRow('', 'neutral');
     });
 
-    /* Мобильное меню */
-    function openMobileNav() {
-        var n = document.getElementById('mobile-nav');
-        var o = document.getElementById('mobile-nav-overlay');
-        var b = document.getElementById('nav-burger');
-        if (n) n.classList.add('show');
-        if (o) o.hidden = false;
-        if (b) b.setAttribute('aria-expanded', 'true');
-        document.documentElement.classList.add('nav-open');
-    }
-    function closeMobileNav() {
-        var n = document.getElementById('mobile-nav');
-        var o = document.getElementById('mobile-nav-overlay');
-        var b = document.getElementById('nav-burger');
-        if (n) n.classList.remove('show');
-        if (o) o.hidden = true;
-        if (b) b.setAttribute('aria-expanded', 'false');
-        document.documentElement.classList.remove('nav-open');
-    }
-    document.addEventListener('click', function (e) {
-        if (e.target.closest('#nav-burger')) { openMobileNav(); return; }
-        if (e.target.closest('#mobile-nav-overlay') || e.target.closest('.mobile-nav-close')) { closeMobileNav(); return; }
-        if (e.target.closest('.mobile-nav a')) { closeMobileNav(); return; }
-    });
-    document.addEventListener('keydown', function (e) {
-        if (e.key === 'Escape') closeMobileNav();
-    });
-
     /* Изменение полей: автоотправка форм (data-auto-submit),
        подтверждение занятия занятого варианта (select.js-variant-select) */
     document.addEventListener('change', function (e) {
diff --git a/web/src/main/resources/static/js/bootstrap.bundle.min.js b/web/src/main/resources/static/js/bootstrap.bundle.min.js
new file mode 100644
index 0000000..04e9185
--- /dev/null
+++ b/web/src/main/resources/static/js/bootstrap.bundle.min.js
@@ -0,0 +1,7 @@
+/*!
+  * Bootstrap v5.3.3 (https://getbootstrap.com/)
+  * Copyright 2011-2024 The Bootstrap Authors (https://github.com/twbs/bootstrap/graphs/contributors)
+  * Licensed under MIT (https://github.com/twbs/bootstrap/blob/main/LICENSE)
+  */
+!function(t,e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define(e):(t="undefined"!=typeof globalThis?globalThis:t||self).bootstrap=e()}(this,(function(){"use strict";const t=new Map,e={set(e,i,n){t.has(e)||t.set(e,new Map);const s=t.get(e);s.has(i)||0===s.size?s.set(i,n):console.error(`Bootstrap doesn't allow more than one instance per element. 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vi=Object.freeze(Object.defineProperty({__proto__:null,afterMain:ae,afterRead:se,afterWrite:he,applyStyles:_e,arrow:Me,auto:Kt,basePlacements:Qt,beforeMain:oe,beforeRead:ie,beforeWrite:le,bottom:Rt,clippingParents:Ut,computeStyles:Be,createPopper:bi,createPopperBase:gi,createPopperLite:_i,detectOverflow:ii,end:Yt,eventListeners:Re,flip:si,hide:ai,left:Vt,main:re,modifierPhases:de,offset:li,placements:ee,popper:Jt,popperGenerator:mi,popperOffsets:ci,preventOverflow:hi,read:ne,reference:Zt,right:qt,start:Xt,top:zt,variationPlacements:te,viewport:Gt,write:ce},Symbol.toStringTag,{value:"Module"})),yi="dropdown",wi=".bs.dropdown",Ai=".data-api",Ei="ArrowUp",Ti="ArrowDown",Ci=`hide${wi}`,Oi=`hidden${wi}`,xi=`show${wi}`,ki=`shown${wi}`,Li=`click${wi}${Ai}`,Si=`keydown${wi}${Ai}`,Di=`keyup${wi}${Ai}`,$i="show",Ii='[data-bs-toggle="dropdown"]:not(.disabled):not(:disabled)',Ni=`${Ii}.${$i}`,Pi=".dropdown-menu",ji=p()?"top-end":"top-start",Mi=p()?"top-start":"top-end",Fi=p()?"bottom-end":"bottom-start",Hi=p()?"bottom-start":"bottom-end",Wi=p()?"left-start":"right-start",Bi=p()?"right-start":"left-start",zi={autoClose:!0,boundary:"clippingParents",display:"dynamic",offset:[0,2],popperConfig:null,reference:"toggle"},Ri={autoClose:"(boolean|string)",boundary:"(string|element)",display:"string",offset:"(array|string|function)",popperConfig:"(null|object|function)",reference:"(string|element|object)"};class qi extends W{constructor(t,e){super(t,e),this._popper=null,this._parent=this._element.parentNode,this._menu=z.next(this._element,Pi)[0]||z.prev(this._element,Pi)[0]||z.findOne(Pi,this._parent),this._inNavbar=this._detectNavbar()}static get Default(){return zi}static get DefaultType(){return Ri}static get NAME(){return yi}toggle(){return this._isShown()?this.hide():this.show()}show(){if(l(this._element)||this._isShown())return;const t={relatedTarget:this._element};if(!N.trigger(this._element,xi,t).defaultPrevented){if(this._createPopper(),"ontouchstart"in document.documentElement&&!this._parent.closest(".navbar-nav"))for(const t of[].concat(...document.body.children))N.on(t,"mouseover",h);this._element.focus(),this._element.setAttribute("aria-expanded",!0),this._menu.classList.add($i),this._element.classList.add($i),N.trigger(this._element,ki,t)}}hide(){if(l(this._element)||!this._isShown())return;const t={relatedTarget:this._element};this._completeHide(t)}dispose(){this._popper&&this._popper.destroy(),super.dispose()}update(){this._inNavbar=this._detectNavbar(),this._popper&&this._popper.update()}_completeHide(t){if(!N.trigger(this._element,Ci,t).defaultPrevented){if("ontouchstart"in document.documentElement)for(const t of[].concat(...document.body.children))N.off(t,"mouseover",h);this._popper&&this._popper.destroy(),this._menu.classList.remove($i),this._element.classList.remove($i),this._element.setAttribute("aria-expanded","false"),F.removeDataAttribute(this._menu,"popper"),N.trigger(this._element,Oi,t)}}_getConfig(t){if("object"==typeof(t=super._getConfig(t)).reference&&!o(t.reference)&&"function"!=typeof t.reference.getBoundingClientRect)throw new TypeError(`${yi.toUpperCase()}: Option "reference" provided type "object" without a required "getBoundingClientRect" method.`);return t}_createPopper(){if(void 0===vi)throw new TypeError("Bootstrap's dropdowns require Popper (https://popper.js.org)");let t=this._element;"parent"===this._config.reference?t=this._parent:o(this._config.reference)?t=r(this._config.reference):"object"==typeof this._config.reference&&(t=this._config.reference);const e=this._getPopperConfig();this._popper=bi(t,this._menu,e)}_isShown(){return this._menu.classList.contains($i)}_getPlacement(){const t=this._parent;if(t.classList.contains("dropend"))return Wi;if(t.classList.contains("dropstart"))return Bi;if(t.classList.contains("dropup-center"))return"top";if(t.classList.contains("dropdown-center"))return"bottom";const e="end"===getComputedStyle(this._menu).getPropertyValue("--bs-position").trim();return t.classList.contains("dropup")?e?Mi:ji:e?Hi:Fi}_detectNavbar(){return null!==this._element.closest(".navbar")}_getOffset(){const{offset:t}=this._config;return"string"==typeof t?t.split(",").map((t=>Number.parseInt(t,10))):"function"==typeof t?e=>t(e,this._element):t}_getPopperConfig(){const t={placement:this._getPlacement(),modifiers:[{name:"preventOverflow",options:{boundary:this._config.boundary}},{name:"offset",options:{offset:this._getOffset()}}]};return(this._inNavbar||"static"===this._config.display)&&(F.setDataAttribute(this._menu,"popper","static"),t.modifiers=[{name:"applyStyles",enabled:!1}]),{...t,...g(this._config.popperConfig,[t])}}_selectMenuItem({key:t,target:e}){const i=z.find(".dropdown-menu .dropdown-item:not(.disabled):not(:disabled)",this._menu).filter((t=>a(t)));i.length&&b(i,e,t===Ti,!i.includes(e)).focus()}static jQueryInterface(t){return this.each((function(){const e=qi.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t])throw new TypeError(`No method named "${t}"`);e[t]()}}))}static clearMenus(t){if(2===t.button||"keyup"===t.type&&"Tab"!==t.key)return;const e=z.find(Ni);for(const i of e){const e=qi.getInstance(i);if(!e||!1===e._config.autoClose)continue;const n=t.composedPath(),s=n.includes(e._menu);if(n.includes(e._element)||"inside"===e._config.autoClose&&!s||"outside"===e._config.autoClose&&s)continue;if(e._menu.contains(t.target)&&("keyup"===t.type&&"Tab"===t.key||/input|select|option|textarea|form/i.test(t.target.tagName)))continue;const o={relatedTarget:e._element};"click"===t.type&&(o.clickEvent=t),e._completeHide(o)}}static dataApiKeydownHandler(t){const e=/input|textarea/i.test(t.target.tagName),i="Escape"===t.key,n=[Ei,Ti].includes(t.key);if(!n&&!i)return;if(e&&!i)return;t.preventDefault();const s=this.matches(Ii)?this:z.prev(this,Ii)[0]||z.next(this,Ii)[0]||z.findOne(Ii,t.delegateTarget.parentNode),o=qi.getOrCreateInstance(s);if(n)return t.stopPropagation(),o.show(),void o._selectMenuItem(t);o._isShown()&&(t.stopPropagation(),o.hide(),s.focus())}}N.on(document,Si,Ii,qi.dataApiKeydownHandler),N.on(document,Si,Pi,qi.dataApiKeydownHandler),N.on(document,Li,qi.clearMenus),N.on(document,Di,qi.clearMenus),N.on(document,Li,Ii,(function(t){t.preventDefault(),qi.getOrCreateInstance(this).toggle()})),m(qi);const Vi="backdrop",Ki="show",Qi=`mousedown.bs.${Vi}`,Xi={className:"modal-backdrop",clickCallback:null,isAnimated:!1,isVisible:!0,rootElement:"body"},Yi={className:"string",clickCallback:"(function|null)",isAnimated:"boolean",isVisible:"boolean",rootElement:"(element|string)"};class Ui extends H{constructor(t){super(),this._config=this._getConfig(t),this._isAppended=!1,this._element=null}static get Default(){return Xi}static get DefaultType(){return Yi}static get NAME(){return Vi}show(t){if(!this._config.isVisible)return void g(t);this._append();const e=this._getElement();this._config.isAnimated&&d(e),e.classList.add(Ki),this._emulateAnimation((()=>{g(t)}))}hide(t){this._config.isVisible?(this._getElement().classList.remove(Ki),this._emulateAnimation((()=>{this.dispose(),g(t)}))):g(t)}dispose(){this._isAppended&&(N.off(this._element,Qi),this._element.remove(),this._isAppended=!1)}_getElement(){if(!this._element){const t=document.createElement("div");t.className=this._config.className,this._config.isAnimated&&t.classList.add("fade"),this._element=t}return this._element}_configAfterMerge(t){return t.rootElement=r(t.rootElement),t}_append(){if(this._isAppended)return;const t=this._getElement();this._config.rootElement.append(t),N.on(t,Qi,(()=>{g(this._config.clickCallback)})),this._isAppended=!0}_emulateAnimation(t){_(t,this._getElement(),this._config.isAnimated)}}const Gi=".bs.focustrap",Ji=`focusin${Gi}`,Zi=`keydown.tab${Gi}`,tn="backward",en={autofocus:!0,trapElement:null},nn={autofocus:"boolean",trapElement:"element"};class sn extends H{constructor(t){super(),this._config=this._getConfig(t),this._isActive=!1,this._lastTabNavDirection=null}static get Default(){return en}static get DefaultType(){return nn}static get NAME(){return"focustrap"}activate(){this._isActive||(this._config.autofocus&&this._config.trapElement.focus(),N.off(document,Gi),N.on(document,Ji,(t=>this._handleFocusin(t))),N.on(document,Zi,(t=>this._handleKeydown(t))),this._isActive=!0)}deactivate(){this._isActive&&(this._isActive=!1,N.off(document,Gi))}_handleFocusin(t){const{trapElement:e}=this._config;if(t.target===document||t.target===e||e.contains(t.target))return;const i=z.focusableChildren(e);0===i.length?e.focus():this._lastTabNavDirection===tn?i[i.length-1].focus():i[0].focus()}_handleKeydown(t){"Tab"===t.key&&(this._lastTabNavDirection=t.shiftKey?tn:"forward")}}const on=".fixed-top, .fixed-bottom, .is-fixed, .sticky-top",rn=".sticky-top",an="padding-right",ln="margin-right";class cn{constructor(){this._element=document.body}getWidth(){const t=document.documentElement.clientWidth;return Math.abs(window.innerWidth-t)}hide(){const t=this.getWidth();this._disableOverFlow(),this._setElementAttributes(this._element,an,(e=>e+t)),this._setElementAttributes(on,an,(e=>e+t)),this._setElementAttributes(rn,ln,(e=>e-t))}reset(){this._resetElementAttributes(this._element,"overflow"),this._resetElementAttributes(this._element,an),this._resetElementAttributes(on,an),this._resetElementAttributes(rn,ln)}isOverflowing(){return this.getWidth()>0}_disableOverFlow(){this._saveInitialAttribute(this._element,"overflow"),this._element.style.overflow="hidden"}_setElementAttributes(t,e,i){const n=this.getWidth();this._applyManipulationCallback(t,(t=>{if(t!==this._element&&window.innerWidth>t.clientWidth+n)return;this._saveInitialAttribute(t,e);const s=window.getComputedStyle(t).getPropertyValue(e);t.style.setProperty(e,`${i(Number.parseFloat(s))}px`)}))}_saveInitialAttribute(t,e){const i=t.style.getPropertyValue(e);i&&F.setDataAttribute(t,e,i)}_resetElementAttributes(t,e){this._applyManipulationCallback(t,(t=>{const i=F.getDataAttribute(t,e);null!==i?(F.removeDataAttribute(t,e),t.style.setProperty(e,i)):t.style.removeProperty(e)}))}_applyManipulationCallback(t,e){if(o(t))e(t);else for(const i of z.find(t,this._element))e(i)}}const hn=".bs.modal",dn=`hide${hn}`,un=`hidePrevented${hn}`,fn=`hidden${hn}`,pn=`show${hn}`,mn=`shown${hn}`,gn=`resize${hn}`,_n=`click.dismiss${hn}`,bn=`mousedown.dismiss${hn}`,vn=`keydown.dismiss${hn}`,yn=`click${hn}.data-api`,wn="modal-open",An="show",En="modal-static",Tn={backdrop:!0,focus:!0,keyboard:!0},Cn={backdrop:"(boolean|string)",focus:"boolean",keyboard:"boolean"};class On extends W{constructor(t,e){super(t,e),this._dialog=z.findOne(".modal-dialog",this._element),this._backdrop=this._initializeBackDrop(),this._focustrap=this._initializeFocusTrap(),this._isShown=!1,this._isTransitioning=!1,this._scrollBar=new cn,this._addEventListeners()}static get Default(){return Tn}static get DefaultType(){return Cn}static get NAME(){return"modal"}toggle(t){return this._isShown?this.hide():this.show(t)}show(t){this._isShown||this._isTransitioning||N.trigger(this._element,pn,{relatedTarget:t}).defaultPrevented||(this._isShown=!0,this._isTransitioning=!0,this._scrollBar.hide(),document.body.classList.add(wn),this._adjustDialog(),this._backdrop.show((()=>this._showElement(t))))}hide(){this._isShown&&!this._isTransitioning&&(N.trigger(this._element,dn).defaultPrevented||(this._isShown=!1,this._isTransitioning=!0,this._focustrap.deactivate(),this._element.classList.remove(An),this._queueCallback((()=>this._hideModal()),this._element,this._isAnimated())))}dispose(){N.off(window,hn),N.off(this._dialog,hn),this._backdrop.dispose(),this._focustrap.deactivate(),super.dispose()}handleUpdate(){this._adjustDialog()}_initializeBackDrop(){return new Ui({isVisible:Boolean(this._config.backdrop),isAnimated:this._isAnimated()})}_initializeFocusTrap(){return new sn({trapElement:this._element})}_showElement(t){document.body.contains(this._element)||document.body.append(this._element),this._element.style.display="block",this._element.removeAttribute("aria-hidden"),this._element.setAttribute("aria-modal",!0),this._element.setAttribute("role","dialog"),this._element.scrollTop=0;const e=z.findOne(".modal-body",this._dialog);e&&(e.scrollTop=0),d(this._element),this._element.classList.add(An),this._queueCallback((()=>{this._config.focus&&this._focustrap.activate(),this._isTransitioning=!1,N.trigger(this._element,mn,{relatedTarget:t})}),this._dialog,this._isAnimated())}_addEventListeners(){N.on(this._element,vn,(t=>{"Escape"===t.key&&(this._config.keyboard?this.hide():this._triggerBackdropTransition())})),N.on(window,gn,(()=>{this._isShown&&!this._isTransitioning&&this._adjustDialog()})),N.on(this._element,bn,(t=>{N.one(this._element,_n,(e=>{this._element===t.target&&this._element===e.target&&("static"!==this._config.backdrop?this._config.backdrop&&this.hide():this._triggerBackdropTransition())}))}))}_hideModal(){this._element.style.display="none",this._element.setAttribute("aria-hidden",!0),this._element.removeAttribute("aria-modal"),this._element.removeAttribute("role"),this._isTransitioning=!1,this._backdrop.hide((()=>{document.body.classList.remove(wn),this._resetAdjustments(),this._scrollBar.reset(),N.trigger(this._element,fn)}))}_isAnimated(){return this._element.classList.contains("fade")}_triggerBackdropTransition(){if(N.trigger(this._element,un).defaultPrevented)return;const t=this._element.scrollHeight>document.documentElement.clientHeight,e=this._element.style.overflowY;"hidden"===e||this._element.classList.contains(En)||(t||(this._element.style.overflowY="hidden"),this._element.classList.add(En),this._queueCallback((()=>{this._element.classList.remove(En),this._queueCallback((()=>{this._element.style.overflowY=e}),this._dialog)}),this._dialog),this._element.focus())}_adjustDialog(){const t=this._element.scrollHeight>document.documentElement.clientHeight,e=this._scrollBar.getWidth(),i=e>0;if(i&&!t){const t=p()?"paddingLeft":"paddingRight";this._element.style[t]=`${e}px`}if(!i&&t){const t=p()?"paddingRight":"paddingLeft";this._element.style[t]=`${e}px`}}_resetAdjustments(){this._element.style.paddingLeft="",this._element.style.paddingRight=""}static jQueryInterface(t,e){return this.each((function(){const i=On.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===i[t])throw new TypeError(`No method named "${t}"`);i[t](e)}}))}}N.on(document,yn,'[data-bs-toggle="modal"]',(function(t){const e=z.getElementFromSelector(this);["A","AREA"].includes(this.tagName)&&t.preventDefault(),N.one(e,pn,(t=>{t.defaultPrevented||N.one(e,fn,(()=>{a(this)&&this.focus()}))}));const i=z.findOne(".modal.show");i&&On.getInstance(i).hide(),On.getOrCreateInstance(e).toggle(this)})),R(On),m(On);const xn=".bs.offcanvas",kn=".data-api",Ln=`load${xn}${kn}`,Sn="show",Dn="showing",$n="hiding",In=".offcanvas.show",Nn=`show${xn}`,Pn=`shown${xn}`,jn=`hide${xn}`,Mn=`hidePrevented${xn}`,Fn=`hidden${xn}`,Hn=`resize${xn}`,Wn=`click${xn}${kn}`,Bn=`keydown.dismiss${xn}`,zn={backdrop:!0,keyboard:!0,scroll:!1},Rn={backdrop:"(boolean|string)",keyboard:"boolean",scroll:"boolean"};class qn extends W{constructor(t,e){super(t,e),this._isShown=!1,this._backdrop=this._initializeBackDrop(),this._focustrap=this._initializeFocusTrap(),this._addEventListeners()}static get Default(){return zn}static get DefaultType(){return Rn}static get NAME(){return"offcanvas"}toggle(t){return this._isShown?this.hide():this.show(t)}show(t){this._isShown||N.trigger(this._element,Nn,{relatedTarget:t}).defaultPrevented||(this._isShown=!0,this._backdrop.show(),this._config.scroll||(new cn).hide(),this._element.setAttribute("aria-modal",!0),this._element.setAttribute("role","dialog"),this._element.classList.add(Dn),this._queueCallback((()=>{this._config.scroll&&!this._config.backdrop||this._focustrap.activate(),this._element.classList.add(Sn),this._element.classList.remove(Dn),N.trigger(this._element,Pn,{relatedTarget:t})}),this._element,!0))}hide(){this._isShown&&(N.trigger(this._element,jn).defaultPrevented||(this._focustrap.deactivate(),this._element.blur(),this._isShown=!1,this._element.classList.add($n),this._backdrop.hide(),this._queueCallback((()=>{this._element.classList.remove(Sn,$n),this._element.removeAttribute("aria-modal"),this._element.removeAttribute("role"),this._config.scroll||(new cn).reset(),N.trigger(this._element,Fn)}),this._element,!0)))}dispose(){this._backdrop.dispose(),this._focustrap.deactivate(),super.dispose()}_initializeBackDrop(){const t=Boolean(this._config.backdrop);return new Ui({className:"offcanvas-backdrop",isVisible:t,isAnimated:!0,rootElement:this._element.parentNode,clickCallback:t?()=>{"static"!==this._config.backdrop?this.hide():N.trigger(this._element,Mn)}:null})}_initializeFocusTrap(){return new sn({trapElement:this._element})}_addEventListeners(){N.on(this._element,Bn,(t=>{"Escape"===t.key&&(this._config.keyboard?this.hide():N.trigger(this._element,Mn))}))}static jQueryInterface(t){return this.each((function(){const e=qn.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t]||t.startsWith("_")||"constructor"===t)throw new TypeError(`No method named "${t}"`);e[t](this)}}))}}N.on(document,Wn,'[data-bs-toggle="offcanvas"]',(function(t){const e=z.getElementFromSelector(this);if(["A","AREA"].includes(this.tagName)&&t.preventDefault(),l(this))return;N.one(e,Fn,(()=>{a(this)&&this.focus()}));const i=z.findOne(In);i&&i!==e&&qn.getInstance(i).hide(),qn.getOrCreateInstance(e).toggle(this)})),N.on(window,Ln,(()=>{for(const t of z.find(In))qn.getOrCreateInstance(t).show()})),N.on(window,Hn,(()=>{for(const t of z.find("[aria-modal][class*=show][class*=offcanvas-]"))"fixed"!==getComputedStyle(t).position&&qn.getOrCreateInstance(t).hide()})),R(qn),m(qn);const Vn={"*":["class","dir","id","lang","role",/^aria-[\w-]*$/i],a:["target","href","title","rel"],area:[],b:[],br:[],col:[],code:[],dd:[],div:[],dl:[],dt:[],em:[],hr:[],h1:[],h2:[],h3:[],h4:[],h5:[],h6:[],i:[],img:["src","srcset","alt","title","width","height"],li:[],ol:[],p:[],pre:[],s:[],small:[],span:[],sub:[],sup:[],strong:[],u:[],ul:[]},Kn=new Set(["background","cite","href","itemtype","longdesc","poster","src","xlink:href"]),Qn=/^(?!javascript:)(?:[a-z0-9+.-]+:|[^&:/?#]*(?:[/?#]|$))/i,Xn=(t,e)=>{const i=t.nodeName.toLowerCase();return e.includes(i)?!Kn.has(i)||Boolean(Qn.test(t.nodeValue)):e.filter((t=>t instanceof RegExp)).some((t=>t.test(i)))},Yn={allowList:Vn,content:{},extraClass:"",html:!1,sanitize:!0,sanitizeFn:null,template:"<div></div>"},Un={allowList:"object",content:"object",extraClass:"(string|function)",html:"boolean",sanitize:"boolean",sanitizeFn:"(null|function)",template:"string"},Gn={entry:"(string|element|function|null)",selector:"(string|element)"};class Jn extends H{constructor(t){super(),this._config=this._getConfig(t)}static get Default(){return Yn}static get DefaultType(){return Un}static get NAME(){return"TemplateFactory"}getContent(){return Object.values(this._config.content).map((t=>this._resolvePossibleFunction(t))).filter(Boolean)}hasContent(){return this.getContent().length>0}changeContent(t){return this._checkContent(t),this._config.content={...this._config.content,...t},this}toHtml(){const t=document.createElement("div");t.innerHTML=this._maybeSanitize(this._config.template);for(const[e,i]of Object.entries(this._config.content))this._setContent(t,i,e);const e=t.children[0],i=this._resolvePossibleFunction(this._config.extraClass);return i&&e.classList.add(...i.split(" ")),e}_typeCheckConfig(t){super._typeCheckConfig(t),this._checkContent(t.content)}_checkContent(t){for(const[e,i]of Object.entries(t))super._typeCheckConfig({selector:e,entry:i},Gn)}_setContent(t,e,i){const n=z.findOne(i,t);n&&((e=this._resolvePossibleFunction(e))?o(e)?this._putElementInTemplate(r(e),n):this._config.html?n.innerHTML=this._maybeSanitize(e):n.textContent=e:n.remove())}_maybeSanitize(t){return this._config.sanitize?function(t,e,i){if(!t.length)return t;if(i&&"function"==typeof i)return i(t);const n=(new window.DOMParser).parseFromString(t,"text/html"),s=[].concat(...n.body.querySelectorAll("*"));for(const t of s){const i=t.nodeName.toLowerCase();if(!Object.keys(e).includes(i)){t.remove();continue}const n=[].concat(...t.attributes),s=[].concat(e["*"]||[],e[i]||[]);for(const e of n)Xn(e,s)||t.removeAttribute(e.nodeName)}return n.body.innerHTML}(t,this._config.allowList,this._config.sanitizeFn):t}_resolvePossibleFunction(t){return g(t,[this])}_putElementInTemplate(t,e){if(this._config.html)return e.innerHTML="",void e.append(t);e.textContent=t.textContent}}const Zn=new Set(["sanitize","allowList","sanitizeFn"]),ts="fade",es="show",is=".modal",ns="hide.bs.modal",ss="hover",os="focus",rs={AUTO:"auto",TOP:"top",RIGHT:p()?"left":"right",BOTTOM:"bottom",LEFT:p()?"right":"left"},as={allowList:Vn,animation:!0,boundary:"clippingParents",container:!1,customClass:"",delay:0,fallbackPlacements:["top","right","bottom","left"],html:!1,offset:[0,6],placement:"top",popperConfig:null,sanitize:!0,sanitizeFn:null,selector:!1,template:'<div class="tooltip" role="tooltip"><div class="tooltip-arrow"></div><div class="tooltip-inner"></div></div>',title:"",trigger:"hover focus"},ls={allowList:"object",animation:"boolean",boundary:"(string|element)",container:"(string|element|boolean)",customClass:"(string|function)",delay:"(number|object)",fallbackPlacements:"array",html:"boolean",offset:"(array|string|function)",placement:"(string|function)",popperConfig:"(null|object|function)",sanitize:"boolean",sanitizeFn:"(null|function)",selector:"(string|boolean)",template:"string",title:"(string|element|function)",trigger:"string"};class cs extends W{constructor(t,e){if(void 0===vi)throw new TypeError("Bootstrap's tooltips require Popper (https://popper.js.org)");super(t,e),this._isEnabled=!0,this._timeout=0,this._isHovered=null,this._activeTrigger={},this._popper=null,this._templateFactory=null,this._newContent=null,this.tip=null,this._setListeners(),this._config.selector||this._fixTitle()}static get Default(){return as}static get DefaultType(){return ls}static get NAME(){return"tooltip"}enable(){this._isEnabled=!0}disable(){this._isEnabled=!1}toggleEnabled(){this._isEnabled=!this._isEnabled}toggle(){this._isEnabled&&(this._activeTrigger.click=!this._activeTrigger.click,this._isShown()?this._leave():this._enter())}dispose(){clearTimeout(this._timeout),N.off(this._element.closest(is),ns,this._hideModalHandler),this._element.getAttribute("data-bs-original-title")&&this._element.setAttribute("title",this._element.getAttribute("data-bs-original-title")),this._disposePopper(),super.dispose()}show(){if("none"===this._element.style.display)throw new Error("Please use show on visible elements");if(!this._isWithContent()||!this._isEnabled)return;const t=N.trigger(this._element,this.constructor.eventName("show")),e=(c(this._element)||this._element.ownerDocument.documentElement).contains(this._element);if(t.defaultPrevented||!e)return;this._disposePopper();const i=this._getTipElement();this._element.setAttribute("aria-describedby",i.getAttribute("id"));const{container:n}=this._config;if(this._element.ownerDocument.documentElement.contains(this.tip)||(n.append(i),N.trigger(this._element,this.constructor.eventName("inserted"))),this._popper=this._createPopper(i),i.classList.add(es),"ontouchstart"in document.documentElement)for(const t of[].concat(...document.body.children))N.on(t,"mouseover",h);this._queueCallback((()=>{N.trigger(this._element,this.constructor.eventName("shown")),!1===this._isHovered&&this._leave(),this._isHovered=!1}),this.tip,this._isAnimated())}hide(){if(this._isShown()&&!N.trigger(this._element,this.constructor.eventName("hide")).defaultPrevented){if(this._getTipElement().classList.remove(es),"ontouchstart"in document.documentElement)for(const t of[].concat(...document.body.children))N.off(t,"mouseover",h);this._activeTrigger.click=!1,this._activeTrigger[os]=!1,this._activeTrigger[ss]=!1,this._isHovered=null,this._queueCallback((()=>{this._isWithActiveTrigger()||(this._isHovered||this._disposePopper(),this._element.removeAttribute("aria-describedby"),N.trigger(this._element,this.constructor.eventName("hidden")))}),this.tip,this._isAnimated())}}update(){this._popper&&this._popper.update()}_isWithContent(){return Boolean(this._getTitle())}_getTipElement(){return this.tip||(this.tip=this._createTipElement(this._newContent||this._getContentForTemplate())),this.tip}_createTipElement(t){const e=this._getTemplateFactory(t).toHtml();if(!e)return null;e.classList.remove(ts,es),e.classList.add(`bs-${this.constructor.NAME}-auto`);const i=(t=>{do{t+=Math.floor(1e6*Math.random())}while(document.getElementById(t));return t})(this.constructor.NAME).toString();return e.setAttribute("id",i),this._isAnimated()&&e.classList.add(ts),e}setContent(t){this._newContent=t,this._isShown()&&(this._disposePopper(),this.show())}_getTemplateFactory(t){return this._templateFactory?this._templateFactory.changeContent(t):this._templateFactory=new Jn({...this._config,content:t,extraClass:this._resolvePossibleFunction(this._config.customClass)}),this._templateFactory}_getContentForTemplate(){return{".tooltip-inner":this._getTitle()}}_getTitle(){return this._resolvePossibleFunction(this._config.title)||this._element.getAttribute("data-bs-original-title")}_initializeOnDelegatedTarget(t){return this.constructor.getOrCreateInstance(t.delegateTarget,this._getDelegateConfig())}_isAnimated(){return this._config.animation||this.tip&&this.tip.classList.contains(ts)}_isShown(){return this.tip&&this.tip.classList.contains(es)}_createPopper(t){const e=g(this._config.placement,[this,t,this._element]),i=rs[e.toUpperCase()];return bi(this._element,t,this._getPopperConfig(i))}_getOffset(){const{offset:t}=this._config;return"string"==typeof t?t.split(",").map((t=>Number.parseInt(t,10))):"function"==typeof t?e=>t(e,this._element):t}_resolvePossibleFunction(t){return g(t,[this._element])}_getPopperConfig(t){const e={placement:t,modifiers:[{name:"flip",options:{fallbackPlacements:this._config.fallbackPlacements}},{name:"offset",options:{offset:this._getOffset()}},{name:"preventOverflow",options:{boundary:this._config.boundary}},{name:"arrow",options:{element:`.${this.constructor.NAME}-arrow`}},{name:"preSetPlacement",enabled:!0,phase:"beforeMain",fn:t=>{this._getTipElement().setAttribute("data-popper-placement",t.state.placement)}}]};return{...e,...g(this._config.popperConfig,[e])}}_setListeners(){const t=this._config.trigger.split(" ");for(const e of t)if("click"===e)N.on(this._element,this.constructor.eventName("click"),this._config.selector,(t=>{this._initializeOnDelegatedTarget(t).toggle()}));else if("manual"!==e){const t=e===ss?this.constructor.eventName("mouseenter"):this.constructor.eventName("focusin"),i=e===ss?this.constructor.eventName("mouseleave"):this.constructor.eventName("focusout");N.on(this._element,t,this._config.selector,(t=>{const e=this._initializeOnDelegatedTarget(t);e._activeTrigger["focusin"===t.type?os:ss]=!0,e._enter()})),N.on(this._element,i,this._config.selector,(t=>{const e=this._initializeOnDelegatedTarget(t);e._activeTrigger["focusout"===t.type?os:ss]=e._element.contains(t.relatedTarget),e._leave()}))}this._hideModalHandler=()=>{this._element&&this.hide()},N.on(this._element.closest(is),ns,this._hideModalHandler)}_fixTitle(){const t=this._element.getAttribute("title");t&&(this._element.getAttribute("aria-label")||this._element.textContent.trim()||this._element.setAttribute("aria-label",t),this._element.setAttribute("data-bs-original-title",t),this._element.removeAttribute("title"))}_enter(){this._isShown()||this._isHovered?this._isHovered=!0:(this._isHovered=!0,this._setTimeout((()=>{this._isHovered&&this.show()}),this._config.delay.show))}_leave(){this._isWithActiveTrigger()||(this._isHovered=!1,this._setTimeout((()=>{this._isHovered||this.hide()}),this._config.delay.hide))}_setTimeout(t,e){clearTimeout(this._timeout),this._timeout=setTimeout(t,e)}_isWithActiveTrigger(){return Object.values(this._activeTrigger).includes(!0)}_getConfig(t){const e=F.getDataAttributes(this._element);for(const t of Object.keys(e))Zn.has(t)&&delete e[t];return t={...e,..."object"==typeof t&&t?t:{}},t=this._mergeConfigObj(t),t=this._configAfterMerge(t),this._typeCheckConfig(t),t}_configAfterMerge(t){return t.container=!1===t.container?document.body:r(t.container),"number"==typeof t.delay&&(t.delay={show:t.delay,hide:t.delay}),"number"==typeof t.title&&(t.title=t.title.toString()),"number"==typeof t.content&&(t.content=t.content.toString()),t}_getDelegateConfig(){const t={};for(const[e,i]of Object.entries(this._config))this.constructor.Default[e]!==i&&(t[e]=i);return t.selector=!1,t.trigger="manual",t}_disposePopper(){this._popper&&(this._popper.destroy(),this._popper=null),this.tip&&(this.tip.remove(),this.tip=null)}static jQueryInterface(t){return this.each((function(){const e=cs.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t])throw new TypeError(`No method named "${t}"`);e[t]()}}))}}m(cs);const hs={...cs.Default,content:"",offset:[0,8],placement:"right",template:'<div class="popover" role="tooltip"><div class="popover-arrow"></div><h3 class="popover-header"></h3><div class="popover-body"></div></div>',trigger:"click"},ds={...cs.DefaultType,content:"(null|string|element|function)"};class us extends cs{static get Default(){return hs}static get DefaultType(){return ds}static get NAME(){return"popover"}_isWithContent(){return this._getTitle()||this._getContent()}_getContentForTemplate(){return{".popover-header":this._getTitle(),".popover-body":this._getContent()}}_getContent(){return this._resolvePossibleFunction(this._config.content)}static jQueryInterface(t){return this.each((function(){const e=us.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t])throw new TypeError(`No method named "${t}"`);e[t]()}}))}}m(us);const fs=".bs.scrollspy",ps=`activate${fs}`,ms=`click${fs}`,gs=`load${fs}.data-api`,_s="active",bs="[href]",vs=".nav-link",ys=`${vs}, .nav-item > ${vs}, .list-group-item`,ws={offset:null,rootMargin:"0px 0px -25%",smoothScroll:!1,target:null,threshold:[.1,.5,1]},As={offset:"(number|null)",rootMargin:"string",smoothScroll:"boolean",target:"element",threshold:"array"};class Es extends W{constructor(t,e){super(t,e),this._targetLinks=new Map,this._observableSections=new Map,this._rootElement="visible"===getComputedStyle(this._element).overflowY?null:this._element,this._activeTarget=null,this._observer=null,this._previousScrollData={visibleEntryTop:0,parentScrollTop:0},this.refresh()}static get Default(){return ws}static get DefaultType(){return As}static get NAME(){return"scrollspy"}refresh(){this._initializeTargetsAndObservables(),this._maybeEnableSmoothScroll(),this._observer?this._observer.disconnect():this._observer=this._getNewObserver();for(const t of this._observableSections.values())this._observer.observe(t)}dispose(){this._observer.disconnect(),super.dispose()}_configAfterMerge(t){return t.target=r(t.target)||document.body,t.rootMargin=t.offset?`${t.offset}px 0px -30%`:t.rootMargin,"string"==typeof t.threshold&&(t.threshold=t.threshold.split(",").map((t=>Number.parseFloat(t)))),t}_maybeEnableSmoothScroll(){this._config.smoothScroll&&(N.off(this._config.target,ms),N.on(this._config.target,ms,bs,(t=>{const e=this._observableSections.get(t.target.hash);if(e){t.preventDefault();const i=this._rootElement||window,n=e.offsetTop-this._element.offsetTop;if(i.scrollTo)return void i.scrollTo({top:n,behavior:"smooth"});i.scrollTop=n}})))}_getNewObserver(){const t={root:this._rootElement,threshold:this._config.threshold,rootMargin:this._config.rootMargin};return new IntersectionObserver((t=>this._observerCallback(t)),t)}_observerCallback(t){const e=t=>this._targetLinks.get(`#${t.target.id}`),i=t=>{this._previousScrollData.visibleEntryTop=t.target.offsetTop,this._process(e(t))},n=(this._rootElement||document.documentElement).scrollTop,s=n>=this._previousScrollData.parentScrollTop;this._previousScrollData.parentScrollTop=n;for(const o of t){if(!o.isIntersecting){this._activeTarget=null,this._clearActiveClass(e(o));continue}const t=o.target.offsetTop>=this._previousScrollData.visibleEntryTop;if(s&&t){if(i(o),!n)return}else s||t||i(o)}}_initializeTargetsAndObservables(){this._targetLinks=new Map,this._observableSections=new Map;const t=z.find(bs,this._config.target);for(const e of t){if(!e.hash||l(e))continue;const t=z.findOne(decodeURI(e.hash),this._element);a(t)&&(this._targetLinks.set(decodeURI(e.hash),e),this._observableSections.set(e.hash,t))}}_process(t){this._activeTarget!==t&&(this._clearActiveClass(this._config.target),this._activeTarget=t,t.classList.add(_s),this._activateParents(t),N.trigger(this._element,ps,{relatedTarget:t}))}_activateParents(t){if(t.classList.contains("dropdown-item"))z.findOne(".dropdown-toggle",t.closest(".dropdown")).classList.add(_s);else for(const e of z.parents(t,".nav, .list-group"))for(const t of z.prev(e,ys))t.classList.add(_s)}_clearActiveClass(t){t.classList.remove(_s);const e=z.find(`${bs}.${_s}`,t);for(const t of e)t.classList.remove(_s)}static jQueryInterface(t){return this.each((function(){const e=Es.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t]||t.startsWith("_")||"constructor"===t)throw new TypeError(`No method named "${t}"`);e[t]()}}))}}N.on(window,gs,(()=>{for(const t of z.find('[data-bs-spy="scroll"]'))Es.getOrCreateInstance(t)})),m(Es);const Ts=".bs.tab",Cs=`hide${Ts}`,Os=`hidden${Ts}`,xs=`show${Ts}`,ks=`shown${Ts}`,Ls=`click${Ts}`,Ss=`keydown${Ts}`,Ds=`load${Ts}`,$s="ArrowLeft",Is="ArrowRight",Ns="ArrowUp",Ps="ArrowDown",js="Home",Ms="End",Fs="active",Hs="fade",Ws="show",Bs=".dropdown-toggle",zs=`:not(${Bs})`,Rs='[data-bs-toggle="tab"], [data-bs-toggle="pill"], [data-bs-toggle="list"]',qs=`.nav-link${zs}, .list-group-item${zs}, [role="tab"]${zs}, ${Rs}`,Vs=`.${Fs}[data-bs-toggle="tab"], .${Fs}[data-bs-toggle="pill"], .${Fs}[data-bs-toggle="list"]`;class Ks extends W{constructor(t){super(t),this._parent=this._element.closest('.list-group, .nav, [role="tablist"]'),this._parent&&(this._setInitialAttributes(this._parent,this._getChildren()),N.on(this._element,Ss,(t=>this._keydown(t))))}static get NAME(){return"tab"}show(){const t=this._element;if(this._elemIsActive(t))return;const e=this._getActiveElem(),i=e?N.trigger(e,Cs,{relatedTarget:t}):null;N.trigger(t,xs,{relatedTarget:e}).defaultPrevented||i&&i.defaultPrevented||(this._deactivate(e,t),this._activate(t,e))}_activate(t,e){t&&(t.classList.add(Fs),this._activate(z.getElementFromSelector(t)),this._queueCallback((()=>{"tab"===t.getAttribute("role")?(t.removeAttribute("tabindex"),t.setAttribute("aria-selected",!0),this._toggleDropDown(t,!0),N.trigger(t,ks,{relatedTarget:e})):t.classList.add(Ws)}),t,t.classList.contains(Hs)))}_deactivate(t,e){t&&(t.classList.remove(Fs),t.blur(),this._deactivate(z.getElementFromSelector(t)),this._queueCallback((()=>{"tab"===t.getAttribute("role")?(t.setAttribute("aria-selected",!1),t.setAttribute("tabindex","-1"),this._toggleDropDown(t,!1),N.trigger(t,Os,{relatedTarget:e})):t.classList.remove(Ws)}),t,t.classList.contains(Hs)))}_keydown(t){if(![$s,Is,Ns,Ps,js,Ms].includes(t.key))return;t.stopPropagation(),t.preventDefault();const e=this._getChildren().filter((t=>!l(t)));let i;if([js,Ms].includes(t.key))i=e[t.key===js?0:e.length-1];else{const n=[Is,Ps].includes(t.key);i=b(e,t.target,n,!0)}i&&(i.focus({preventScroll:!0}),Ks.getOrCreateInstance(i).show())}_getChildren(){return z.find(qs,this._parent)}_getActiveElem(){return this._getChildren().find((t=>this._elemIsActive(t)))||null}_setInitialAttributes(t,e){this._setAttributeIfNotExists(t,"role","tablist");for(const t of e)this._setInitialAttributesOnChild(t)}_setInitialAttributesOnChild(t){t=this._getInnerElement(t);const e=this._elemIsActive(t),i=this._getOuterElement(t);t.setAttribute("aria-selected",e),i!==t&&this._setAttributeIfNotExists(i,"role","presentation"),e||t.setAttribute("tabindex","-1"),this._setAttributeIfNotExists(t,"role","tab"),this._setInitialAttributesOnTargetPanel(t)}_setInitialAttributesOnTargetPanel(t){const e=z.getElementFromSelector(t);e&&(this._setAttributeIfNotExists(e,"role","tabpanel"),t.id&&this._setAttributeIfNotExists(e,"aria-labelledby",`${t.id}`))}_toggleDropDown(t,e){const i=this._getOuterElement(t);if(!i.classList.contains("dropdown"))return;const n=(t,n)=>{const s=z.findOne(t,i);s&&s.classList.toggle(n,e)};n(Bs,Fs),n(".dropdown-menu",Ws),i.setAttribute("aria-expanded",e)}_setAttributeIfNotExists(t,e,i){t.hasAttribute(e)||t.setAttribute(e,i)}_elemIsActive(t){return t.classList.contains(Fs)}_getInnerElement(t){return t.matches(qs)?t:z.findOne(qs,t)}_getOuterElement(t){return t.closest(".nav-item, .list-group-item")||t}static jQueryInterface(t){return this.each((function(){const e=Ks.getOrCreateInstance(this);if("string"==typeof t){if(void 0===e[t]||t.startsWith("_")||"constructor"===t)throw new TypeError(`No method named "${t}"`);e[t]()}}))}}N.on(document,Ls,Rs,(function(t){["A","AREA"].includes(this.tagName)&&t.preventDefault(),l(this)||Ks.getOrCreateInstance(this).show()})),N.on(window,Ds,(()=>{for(const t of z.find(Vs))Ks.getOrCreateInstance(t)})),m(Ks);const Qs=".bs.toast",Xs=`mouseover${Qs}`,Ys=`mouseout${Qs}`,Us=`focusin${Qs}`,Gs=`focusout${Qs}`,Js=`hide${Qs}`,Zs=`hidden${Qs}`,to=`show${Qs}`,eo=`shown${Qs}`,io="hide",no="show",so="showing",oo={animation:"boolean",autohide:"boolean",delay:"number"},ro={animation:!0,autohide:!0,delay:5e3};class ao extends W{constructor(t,e){super(t,e),this._timeout=null,this._hasMouseInteraction=!1,this._hasKeyboardInteraction=!1,this._setListeners()}static get Default(){return ro}static get DefaultType(){return oo}static get NAME(){return"toast"}show(){N.trigger(this._element,to).defaultPrevented||(this._clearTimeout(),this._config.animation&&this._element.classList.add("fade"),this._element.classList.remove(io),d(this._element),this._element.classList.add(no,so),this._queueCallback((()=>{this._element.classList.remove(so),N.trigger(this._element,eo),this._maybeScheduleHide()}),this._element,this._config.animation))}hide(){this.isShown()&&(N.trigger(this._element,Js).defaultPrevented||(this._element.classList.add(so),this._queueCallback((()=>{this._element.classList.add(io),this._element.classList.remove(so,no),N.trigger(this._element,Zs)}),this._element,this._config.animation)))}dispose(){this._clearTimeout(),this.isShown()&&this._element.classList.remove(no),super.dispose()}isShown(){return this._element.classList.contains(no)}_maybeScheduleHide(){this._config.autohide&&(this._hasMouseInteraction||this._hasKeyboardInteraction||(this._timeout=setTimeout((()=>{this.hide()}),this._config.delay)))}_onInteraction(t,e){switch(t.type){case"mouseover":case"mouseout":this._hasMouseInteraction=e;break;case"focusin":case"focusout":this._hasKeyboardInteraction=e}if(e)return void this._clearTimeout();const i=t.relatedTarget;this._element===i||this._element.contains(i)||this._maybeScheduleHide()}_setListeners(){N.on(this._element,Xs,(t=>this._onInteraction(t,!0))),N.on(this._element,Ys,(t=>this._onInteraction(t,!1))),N.on(this._element,Us,(t=>this._onInteraction(t,!0))),N.on(this._element,Gs,(t=>this._onInteraction(t,!1)))}_clearTimeout(){clearTimeout(this._timeout),this._timeout=null}static jQueryInterface(t){return this.each((function(){const e=ao.getOrCreateInstance(this,t);if("string"==typeof t){if(void 0===e[t])throw new TypeError(`No method named "${t}"`);e[t](this)}}))}}return R(ao),m(ao),{Alert:Q,Button:Y,Carousel:xt,Collapse:Bt,Dropdown:qi,Modal:On,Offcanvas:qn,Popover:us,ScrollSpy:Es,Tab:Ks,Toast:ao,Tooltip:cs}}));
+//# sourceMappingURL=bootstrap.bundle.min.js.map
\ No newline at end of file
diff --git a/web/src/main/resources/templates/admin/dashboard.html b/web/src/main/resources/templates/admin/dashboard.html
index 93a2738..f5997b6 100644
--- a/web/src/main/resources/templates/admin/dashboard.html
+++ b/web/src/main/resources/templates/admin/dashboard.html
@@ -5,18 +5,18 @@
 <div id="content">
     <h1 class="page-title">Панель преподавателя</h1>
 
-    <div class="grid grid-stats">
-        <div class="card card-body"><p class="stat-title">Группы</p><p class="stat-value" th:text="${groupCount}">0</p></div>
-        <div class="card card-body"><p class="stat-title">Студенты</p><p class="stat-value" th:text="${studentCount}">0</p></div>
-        <div class="card card-body"><p class="stat-title">Лабораторные</p><p class="stat-value" th:text="${labCount}">0</p>
-            <p class="hint" th:if="${labCount > 0}">опубликовано: <span th:text="${publishedLabs}">0</span></p></div>
-        <div class="card card-body"><p class="stat-title">Средний балл</p>
+    <div class="row row-cols-1 row-cols-sm-2 row-cols-xl-4 g-3">
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Группы</p><p class="stat-value" th:text="${groupCount}">0</p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Студенты</p><p class="stat-value" th:text="${studentCount}">0</p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Лабораторные</p><p class="stat-value" th:text="${labCount}">0</p>
+            <p class="hint" th:if="${labCount > 0}">опубликовано: <span th:text="${publishedLabs}">0</span></p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Средний балл</p>
             <p class="stat-value" th:if="${avgGrade != null}" th:text="${#numbers.formatDecimal(avgGrade, 1, 2)}">—</p>
-            <p class="stat-value text-muted" th:if="${avgGrade == null}">—</p></div>
+            <p class="stat-value text-muted" th:if="${avgGrade == null}">—</p></div></div>
     </div>
 
-    <div class="grid grid-2 mt-8">
-        <div>
+    <div class="row g-4 mt-4">
+        <div class="col-lg-6">
             <div class="flex items-center justify-between mb-4">
                 <h2 class="section-title m-0">Лабораторные</h2>
                 <a th:href="@{/admin/labs}" class="text-sm">Все лабораторные →</a>
@@ -33,7 +33,7 @@
                 </table>
             </div>
         </div>
-        <div>
+        <div class="col-lg-6">
             <div class="flex items-center justify-between mb-4">
                 <h2 class="section-title m-0">Группы</h2>
                 <a th:href="@{/admin/groups}" class="text-sm">Все группы →</a>
diff --git a/web/src/main/resources/templates/admin/group.html b/web/src/main/resources/templates/admin/group.html
index e38b7f3..a26f1f2 100644
--- a/web/src/main/resources/templates/admin/group.html
+++ b/web/src/main/resources/templates/admin/group.html
@@ -49,7 +49,7 @@
                                 <button class="mini-btn" type="button"
                                         th:attr="data-url=@{/admin/groups/{id}/assign-modal(id=${group.id}, labId=${lab.id})},data-lab-name=|ЛР ${lab.number}|" data-action="assign"
                                         title="Выдача вариантов: уровни, варианты, автокраспределение по группе">
-                                    <span class="cell-ico ico ico-menu" aria-hidden="true"></span>
+                                    <i class="cell-ico ico bi bi-list" aria-hidden="true"></i>
                                 </button>
                                 <form class="inline-form" th:with="pub=${labPublication[lab.id]}, pc=${pub != null ? pub.publishedCount : 0}, all=${pub != null and pub.allPublished}"
                                       th:action="@{/admin/groups/{id}/publish(id=${group.id})}" method="post">
@@ -61,8 +61,8 @@
                                             th:attr="data-lab=${lab.id},data-count=${pc},data-total=${pub != null ? pub.total : 0},data-all=${all}"
                                             th:classappend="${all} ? 'is-all' : (${pc > 0} ? 'is-partial' : 'is-empty')"
                                             th:title="${pub == null} ? '' : (${all} ? 'Оценки опубликованы всей группе — нажмите, чтобы скрыть у всех' : (${pc > 0} ? 'Опубликовано ' + ${pc} + ' из ' + ${pub.total} + ' — нажмите, чтобы опубликовать всем' : 'Показать оценки и комментарии всей группе'))">
-                                        <span class="eye-open ico ico-eye-open" aria-hidden="true"></span>
-                                        <span class="eye-closed ico ico-eye-closed" aria-hidden="true"></span>
+                                        <i class="eye-open ico bi bi-eye" aria-hidden="true"></i>
+                                        <i class="eye-closed ico bi bi-eye-slash" aria-hidden="true"></i>
                                         <span class="mini-count js-pub-count" th:classappend="(${all} or ${pc == 0}) ? 'is-hidden' : ''" th:text="${pc}"></span>
                                     </button>
                                 </form>
@@ -278,20 +278,20 @@
         </form>
         <form class="form-stack mt-4" th:action="@{/admin/groups/{gid}/students/create(gid=${group.id})}" method="post">
             <input type="hidden" name="_csrf" th:value="${csrfToken}">
-            <div class="grid grid-2">
-                <div><label class="label" for="stNo">Студенческий номер (логин)</label>
+            <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="stNo">Студенческий номер (логин)</label>
                     <input class="input" id="stNo" name="studentNo" required></div>
-                <div><label class="label" for="stBasis">Основа обучения</label>
+            <div class="col-md-6"><label class="label" for="stBasis">Основа обучения</label>
                     <input class="input" id="stBasis" name="basis" placeholder="бюджет"></div>
-            </div>
+        </div>
             <div><label class="label" for="stLast">Фамилия</label>
                 <input class="input" id="stLast" name="lastName" required></div>
-            <div class="grid grid-2">
-                <div><label class="label" for="stFirst">Имя</label>
+            <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="stFirst">Имя</label>
                     <input class="input" id="stFirst" name="firstName"></div>
-                <div><label class="label" for="stMiddle">Отчество</label>
+            <div class="col-md-6"><label class="label" for="stMiddle">Отчество</label>
                     <input class="input" id="stMiddle" name="middleName"></div>
-            </div>
+        </div>
             <p class="hint">Новому студенту пароль будет сгенерирован автоматически.</p>
             <button class="btn btn-primary" type="submit">Создать нового</button>
         </form>
diff --git a/web/src/main/resources/templates/admin/lab.html b/web/src/main/resources/templates/admin/lab.html
index 695ba61..0273e3d 100644
--- a/web/src/main/resources/templates/admin/lab.html
+++ b/web/src/main/resources/templates/admin/lab.html
@@ -33,25 +33,25 @@
         <h2 class="section-title m-0">Условие лабораторной</h2>
         <button class="mini-btn" type="button" data-action="lab-edit"
                 title="Редактировать параметры лабораторной" aria-label="Редактировать параметры лабораторной">
-            <span class="cell-ico ico ico-pencil" aria-hidden="true"></span>
+            <i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i>
         </button>
     </div>
     <div class="card card-body md-body mb-6" id="lab-description-view" th:utext="${descriptionHtml}"></div>
     <form id="lab-edit-form" hidden class="card card-body form-stack mb-6" method="post"
           th:action="@{/admin/labs/{id}/edit(id=${lab.id})}">
         <input type="hidden" name="_csrf" th:value="${csrfToken}">
-        <div class="grid grid-2">
-            <div><label class="label" for="l-title">Название</label>
+        <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="l-title">Название</label>
                 <input class="input" id="l-title" name="title" th:value="${lab.title}" required></div>
-            <div><label class="label" for="l-points">Максимум баллов</label>
+            <div class="col-md-6"><label class="label" for="l-points">Максимум баллов</label>
                 <input class="input" id="l-points" name="pointsMax" type="number" step="0.1" min="0"
                        th:value="${lab.pointsMax}" required></div>
         </div>
-        <div class="grid grid-2">
-            <div><label class="label" for="l-deadline">Срок сдачи (время — МСК)</label>
+        <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="l-deadline">Срок сдачи (время — МСК)</label>
                 <input class="input" id="l-deadline" name="deadlineAt" type="datetime-local"
                        th:value="${deadlineLocal}"></div>
-            <div><label class="label" for="l-defense">Дата защиты (время — МСК)</label>
+            <div class="col-md-6"><label class="label" for="l-defense">Дата защиты (время — МСК)</label>
                 <input class="input" id="l-defense" name="defenseAt" type="datetime-local" th:value="${defenseLocal}">
             </div>
         </div>
@@ -82,7 +82,7 @@
                 <div class="flex items-center gap-2">
                     <button class="mini-btn" type="button" th:attr="data-modal=|modal-level-rename-${level.id}|"
                             title="Переименовать уровень" aria-label="Переименовать уровень">
-                        <span class="cell-ico ico ico-pencil" aria-hidden="true"></span>
+                        <i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i>
                     </button>
                     <form class="inline-form"
                           th:action="@{/admin/labs/{labId}/levels/{levelId}/delete(labId=${lab.id}, levelId=${level.id})}"
@@ -90,7 +90,7 @@
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
                         <button class="mini-btn danger" type="submit" title="Удалить уровень"
                                 aria-label="Удалить уровень">
-                            <span class="cell-ico ico ico-trash" aria-hidden="true"></span>
+                            <i class="cell-ico ico bi bi-trash" aria-hidden="true"></i>
                         </button>
                     </form>
                     <button class="btn btn-sm" type="button" th:attr="data-modal=|modal-variant-add-${level.id}|">+
@@ -108,7 +108,7 @@
                     <div class="flex gap-2">
                         <button class="mini-btn" type="button" th:attr="data-modal=|modal-variant-edit-${v.id}|"
                                 title="Редактировать вариант" aria-label="Редактировать вариант">
-                            <span class="cell-ico ico ico-pencil" aria-hidden="true"></span>
+                            <i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i>
                         </button>
                         <form class="inline-form"
                               th:action="@{/admin/labs/{labId}/variants/{variantId}/delete(labId=${lab.id}, variantId=${v.id})}"
@@ -116,7 +116,7 @@
                             <input type="hidden" name="_csrf" th:value="${csrfToken}">
                             <button class="mini-btn danger" type="submit" title="Удалить вариант"
                                     aria-label="Удалить вариант">
-                                <span class="cell-ico ico ico-trash" aria-hidden="true"></span>
+                                <i class="cell-ico ico bi bi-trash" aria-hidden="true"></i>
                             </button>
                         </form>
                     </div>
@@ -154,12 +154,12 @@
                       method="post">
                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
                     <input type="hidden" name="labLevelId" th:value="${level.id}">
-                    <div class="grid grid-2">
-                        <div><label class="label" for="|va-number-${level.id}|">Номер</label>
+                    <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="|va-number-${level.id}|">Номер</label>
                             <input class="input" th:id="|va-number-${level.id}|" name="number" required></div>
-                        <div><label class="label" for="|va-title-${level.id}|">Название</label>
+            <div class="col-md-6"><label class="label" for="|va-title-${level.id}|">Название</label>
                             <input class="input" th:id="|va-title-${level.id}|" name="title"></div>
-                    </div>
+        </div>
                     <div><label class="label" for="|va-statement-${level.id}|">Условие (markdown)</label>
                         <textarea class="input" th:id="|va-statement-${level.id}|" name="statementMd"
                                   rows="8"></textarea></div>
@@ -179,14 +179,14 @@
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
                         <input type="hidden" name="variantId" th:value="${v.id}">
                         <input type="hidden" name="labLevelId" th:value="${level.id}">
-                        <div class="grid grid-2">
-                            <div><label class="label" for="|ve-number-${v.id}|">Номер</label>
+                        <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="|ve-number-${v.id}|">Номер</label>
                                 <input class="input" th:id="|ve-number-${v.id}|" name="number" th:value="${v.number}"
                                        required></div>
-                            <div><label class="label" for="|ve-title-${v.id}|">Название</label>
+            <div class="col-md-6"><label class="label" for="|ve-title-${v.id}|">Название</label>
                                 <input class="input" th:id="|ve-title-${v.id}|" name="title" th:value="${v.title}">
                             </div>
-                        </div>
+        </div>
                         <div><label class="label" for="|ve-statement-${v.id}|">Условие (markdown)</label>
                             <textarea class="input" th:id="|ve-statement-${v.id}|" name="statementMd" rows="10"
                                       th:text="${v.statementMd}"></textarea></div>
diff --git a/web/src/main/resources/templates/admin/labs.html b/web/src/main/resources/templates/admin/labs.html
index fab7641..5167961 100644
--- a/web/src/main/resources/templates/admin/labs.html
+++ b/web/src/main/resources/templates/admin/labs.html
@@ -79,20 +79,20 @@
         </div>
         <div class="dlg-body">
             <form class="form-stack" th:action="@{/admin/labs/create}" method="post">
-                <div class="grid grid-2">
-                    <div><label class="label" for="labNumber">Номер</label>
+                <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="labNumber">Номер</label>
                         <input class="input" id="labNumber" name="number" type="number" min="1" required></div>
-                    <div><label class="label" for="labPoints">Максимум баллов</label>
+            <div class="col-md-6"><label class="label" for="labPoints">Максимум баллов</label>
                         <input class="input" id="labPoints" name="pointsMax" type="number" step="0.1" min="0" value="5" required></div>
-                </div>
+        </div>
                 <div><label class="label" for="labTitle">Название</label>
                     <input class="input" id="labTitle" name="title" required></div>
-                <div class="grid grid-2">
-                    <div><label class="label" for="labDeadline">Срок сдачи</label>
+                <div class="row g-3">
+            <div class="col-md-6"><label class="label" for="labDeadline">Срок сдачи</label>
                         <input class="input" id="labDeadline" name="deadlineAt" type="datetime-local"></div>
-                    <div><label class="label" for="labDefense">Дата защиты</label>
+            <div class="col-md-6"><label class="label" for="labDefense">Дата защиты</label>
                         <input class="input" id="labDefense" name="defenseAt" type="datetime-local"></div>
-                </div>
+        </div>
                 <div><label class="label" for="labStatus">Статус</label>
                     <select class="input" id="labStatus" name="status">
                         <option value="draft">draft</option>
diff --git a/web/src/main/resources/templates/fragments/base.html b/web/src/main/resources/templates/fragments/base.html
index 9e2d7b5..8a20f4c 100644
--- a/web/src/main/resources/templates/fragments/base.html
+++ b/web/src/main/resources/templates/fragments/base.html
@@ -16,84 +16,59 @@
     <link rel="icon" type="image/svg+xml" th:href="@{/favicon.svg(v='2')}">
     <!-- v=4: сброс кэша стилей после редизайна; при изменении css поднимать версию -->
     <link rel="stylesheet" th:href="@{/css/bootstrap.min.css}">
-        <link rel="stylesheet" th:href="@{/css/app.css(v='17')}">
-    <link id="hljs-light" rel="stylesheet" th:href="@{/css/hljs-github.css(v='17')}">
-    <link id="hljs-dark" rel="stylesheet" th:href="@{/css/hljs-github-dark.css(v='17')}" disabled>
-    <script th:src="@{/js/highlight.min.js(v='17')}" defer></script>
-    <script th:src="@{/js/table-scroll.js(v='17')}" defer></script>
-    <script th:src="@{/js/tablekit.js(v='17')}" defer></script>
-    <script th:src="@{/js/theme-init.js(v='17')}"></script>
-    <script th:src="@{/js/app.js(v='17')}" defer></script>
-    <script th:src="@{/js/ui-state.js(v='17')}" defer></script>
-    <script th:src="@{/js/md-content.js(v='17')}" defer></script>
-    <script th:src="@{/js/submit-guard.js(v='17')}" defer></script>
+    <link rel="stylesheet" th:href="@{/css/bootstrap-icons.min.css}">
+        <link rel="stylesheet" th:href="@{/css/app.css(v='18')}">
+    <link id="hljs-light" rel="stylesheet" th:href="@{/css/hljs-github.css(v='18')}">
+    <link id="hljs-dark" rel="stylesheet" th:href="@{/css/hljs-github-dark.css(v='18')}" disabled>
+    <script th:src="@{/js/highlight.min.js(v='18')}" defer></script>
+    <script th:src="@{/js/table-scroll.js(v='18')}" defer></script>
+    <script th:src="@{/js/tablekit.js(v='18')}" defer></script>
+    <script th:src="@{/js/bootstrap.bundle.min.js}" defer></script>
+    <script th:src="@{/js/theme-init.js(v='18')}"></script>
+    <script th:src="@{/js/app.js(v='18')}" defer></script>
+    <script th:src="@{/js/ui-state.js(v='18')}" defer></script>
+    <script th:src="@{/js/md-content.js(v='18')}" defer></script>
+    <script th:src="@{/js/submit-guard.js(v='18')}" defer></script>
 </head>
 <body>
 <div class="page">
-    <header class="page-header">
-        <div class="page-header-inner">
-            <a th:href="@{/}" class="logo">LMS<b>.</b></a>
-            <nav class="nav" id="top-nav">
-                <th:block th:if="${currentUser != null}">
-                    <a th:if="${currentUser.admin}" th:href="@{/admin/groups}" class="nav-link">Группы</a>
-                    <a th:if="${currentUser.admin}" th:href="@{/admin/users}" class="nav-link">Пользователи</a>
-                    <a th:if="${currentUser.admin}" th:href="@{/admin/labs}" class="nav-link">Лабораторные</a>
-                    <a th:unless="${currentUser.admin}" th:href="@{/student/labs}" class="nav-link">Лабораторные</a>
-                    <a th:href="@{/change-password}" class="nav-link">Смена пароля</a>
-                </th:block>
-            </nav>
-            <button type="button" class="btn btn-secondary theme-btn"
-                    aria-label="Сменить тему" title="Сменить тему">
-                <span class="theme-icon ico ico-theme" aria-hidden="true"></span>
+    <nav class="navbar b3-navbar navbar-expand-md sticky-top">
+        <div class="container">
+            <a th:href="@{/}" class="navbar-brand">LMS<b>.</b></a>
+            <button class="navbar-toggler" type="button" data-bs-toggle="offcanvas" data-bs-target="#mobileNav"
+                    aria-controls="mobileNav" aria-label="Меню">
+                <i class="bi bi-list"></i>
             </button>
-            <button type="button" id="nav-burger" class="btn btn-sm nav-burger"
-                    aria-label="Меню" aria-expanded="false">
-                <span class="ico ico-menu"></span>
-            </button>
-            <div class="user">
-                <th:block th:if="${currentUser != null}">
-                    <a th:href="@{/admin}" th:if="${currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
-                    <a th:href="@{/student}" th:unless="${currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
-                </th:block>
-                <a th:if="${currentUser == null}" th:href="@{/login}" class="btn btn-sm">Войти</a>
-                <form th:if="${currentUser != null}" th:action="@{/logout}" method="post">
-                    <button class="btn btn-sm" type="submit">Выйти</button>
-                <input type="hidden" name="_csrf" th:value="${csrfToken}">
-                </form>
+            <div class="offcanvas offcanvas-end" tabindex="-1" id="mobileNav" aria-labelledby="mobileNavLabel">
+                <div class="offcanvas-header">
+                    <span class="navbar-brand" id="mobileNavLabel">LMS<b>.</b></span>
+                    <button type="button" class="navbar-close" data-bs-dismiss="offcanvas" aria-label="Закрыть">✕</button>
+                </div>
+                <div class="offcanvas-body">
+                    <ul class="navbar-nav me-auto mb-2 mb-md-0">
+                        <li class="nav-item" th:if="${currentUser != null and currentUser.admin}"><a class="nav-link" th:href="@{/admin/groups}">Группы</a></li>
+                        <li class="nav-item" th:if="${currentUser != null and currentUser.admin}"><a class="nav-link" th:href="@{/admin/users}">Пользователи</a></li>
+                        <li class="nav-item" th:if="${currentUser != null and currentUser.admin}"><a class="nav-link" th:href="@{/admin/labs}">Лабораторные</a></li>
+                        <li class="nav-item" th:if="${currentUser != null and !currentUser.admin}"><a class="nav-link" th:href="@{/student/labs}">Лабораторные</a></li>
+                        <li class="nav-item" th:if="${currentUser != null}"><a class="nav-link" th:href="@{/change-password}">Смена пароля</a></li>
+                    </ul>
+                    <div class="d-flex align-items-center gap-2">
+                        <a th:href="@{/admin}" th:if="${currentUser != null and currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
+                        <a th:href="@{/student}" th:if="${currentUser != null and !currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
+                        <button type="button" class="btn btn-secondary btn-sm theme-btn" aria-label="Сменить тему" title="Сменить тему">
+                            <i class="bi bi-circle-half"></i>
+                        </button>
+                        <a th:if="${currentUser == null}" th:href="@{/login}" class="btn btn-sm">Войти</a>
+                        <form th:if="${currentUser != null}" th:action="@{/logout}" method="post" class="m-0">
+                            <button class="btn btn-sm" type="submit">Выйти</button>
+                            <input type="hidden" name="_csrf" th:value="${csrfToken}">
+                        </form>
+                    </div>
+                </div>
             </div>
         </div>
-    </header>
-
-    <div id="mobile-nav-overlay" class="mobile-nav-overlay" hidden></div>
-    <nav id="mobile-nav" class="mobile-nav offcanvas offcanvas-end" aria-label="Меню" tabindex="-1">
-        <div class="mobile-nav-head">
-            <span class="logo">LMS<b>.</b></span>
-            <button class="dlg-close mobile-nav-close" type="button" aria-label="Закрыть меню">✕</button>
-        </div>
-        <div class="mobile-nav-links nav">
-            <th:block th:if="${currentUser != null}">
-                <a th:if="${currentUser.admin}" th:href="@{/admin/groups}" class="nav-link">Группы</a>
-                <a th:if="${currentUser.admin}" th:href="@{/admin/users}" class="nav-link">Пользователи</a>
-                <a th:if="${currentUser.admin}" th:href="@{/admin/labs}" class="nav-link">Лабораторные</a>
-                <a th:unless="${currentUser.admin}" th:href="@{/student/labs}" class="nav-link">Лабораторные</a>
-                <a th:href="@{/change-password}" class="nav-link">Смена пароля</a>
-            </th:block>
-        </div>
-        <div class="mobile-nav-user">
-            <th:block th:if="${currentUser != null}">
-                <a th:href="@{/admin}" th:if="${currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
-                <a th:href="@{/student}" th:unless="${currentUser.admin}" class="nav-user" th:text="${currentUser.name}" title="Личный кабинет">—</a>
-            </th:block>
-            <button type="button" class="btn btn-secondary btn-sm theme-btn" aria-label="Сменить тему" title="Сменить тему">
-                <span class="ico ico-theme"></span>
-            </button>
-            <form th:if="${currentUser != null}" th:action="@{/logout}" method="post">
-                <button class="btn btn-secondary btn-sm" type="submit">Выйти</button>
-                <input type="hidden" name="_csrf" th:value="${csrfToken}">
-            </form>
-        </div>
     </nav>
-    <main class="page-main">
+    <main class="container page-main">
         <th:block th:replace="${content}" />
     </main>
     <footer class="page-footer">
diff --git a/web/src/main/resources/templates/fragments/md-toolbar.html b/web/src/main/resources/templates/fragments/md-toolbar.html
index 31259c5..9259a57 100644
--- a/web/src/main/resources/templates/fragments/md-toolbar.html
+++ b/web/src/main/resources/templates/fragments/md-toolbar.html
@@ -5,52 +5,52 @@
 <div th:fragment="toolbar(target)" class="md-toolbar" th:attr="data-md-target=${target}"
      role="toolbar" aria-label="Форматирование текста">
     <button type="button" class="md-btn" data-md="bold" title="Полужирный" aria-label="Полужирный">
-        <span class="md-ico ico ico-md-bold" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-type-bold" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="italic" title="Курсив" aria-label="Курсив">
-        <span class="md-ico ico ico-md-italic" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-type-italic" aria-hidden="true"></i>
     </button>
 
     <span class="md-sep"></span>
 
     <button type="button" class="md-btn" data-md="h2" title="Заголовок раздела" aria-label="Заголовок раздела">
-        <span class="md-ico ico ico-md-h2" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-type-h2" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="ul" title="Маркированный список" aria-label="Маркированный список">
-        <span class="md-ico ico ico-md-ul" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-list-ul" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="ol" title="Нумерованный список" aria-label="Нумерованный список">
-        <span class="md-ico ico ico-md-ol" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-list-ol" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="quote" title="Цитата" aria-label="Цитата">
-        <span class="md-ico ico ico-md-quote" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-quote" aria-hidden="true"></i>
     </button>
 
     <span class="md-sep"></span>
 
     <button type="button" class="md-btn" data-md="link" title="Ссылка" aria-label="Ссылка">
-        <span class="md-ico ico ico-md-link" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-link-45deg" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="code" title="Код в строке" aria-label="Код в строке">
-        <span class="md-ico ico ico-md-code" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-code" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="codeblock" title="Блок кода" aria-label="Блок кода">
-        <span class="md-ico ico ico-md-codeblock" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-code-square" aria-hidden="true"></i>
     </button>
 
     <span class="md-sep"></span>
 
     <button type="button" class="md-btn" data-md="table" title="Таблица" aria-label="Таблица">
-        <span class="md-ico ico ico-md-table" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-table" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="figure" title="Картинка с подписью" aria-label="Картинка с подписью">
-        <span class="md-ico ico ico-md-figure" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-image" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="video" title="Видео" aria-label="Видео">
-        <span class="md-ico ico ico-md-video" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-camera-video" aria-hidden="true"></i>
     </button>
     <button type="button" class="md-btn" data-md="spoiler" title="Спойлер (скрытый текст)" aria-label="Спойлер">
-        <span class="md-ico ico ico-md-spoiler" aria-hidden="true"></span>
+        <i class="md-ico ico bi bi-eye-slash" aria-hidden="true"></i>
     </button>
 </div>
 </body>
diff --git a/web/src/main/resources/templates/learn/article.html b/web/src/main/resources/templates/learn/article.html
index 7944edd..1731920 100644
--- a/web/src/main/resources/templates/learn/article.html
+++ b/web/src/main/resources/templates/learn/article.html
@@ -46,21 +46,21 @@
             </h1>
 
             <div th:if="${currentUser != null and currentUser.admin}" class="flex flex-wrap gap-2 mb-4">
-                <button class="mini-btn" type="button" data-action="article-edit" title="Править статью" aria-label="Править статью"><span class="ico ico-pencil" aria-hidden="true"></span></button>
+                <button class="mini-btn" type="button" data-action="article-edit" title="Править статью" aria-label="Править статью"><i class="ico bi bi-pencil" aria-hidden="true"></i></button>
                 <form class="inline-form" th:action="@{/admin/content/articles/toggle-published}" method="post">
                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
                     <input type="hidden" name="id" th:value="${article.id}">
                     <input type="hidden" name="published" th:value="${!article.published}">
                     <input type="hidden" name="back" th:value="${back}">
-                    <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                    <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                    <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                    <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                 </form>
                 <a class="btn btn-secondary"
                    th:href="@{/learn/{c}(c=${article.chapterSlug})}">К главе</a>
                 <form class="inline-form" th:action="@{/admin/content/articles/{id}/delete(id=${article.id})}" method="post" data-confirm="Удалить статью?">
                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
                     <input type="hidden" name="back" th:value="${backParent}">
-                    <button class="mini-btn danger" type="submit" title="Удалить статью" aria-label="Удалить статью"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+                    <button class="mini-btn danger" type="submit" title="Удалить статью" aria-label="Удалить статью"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
                 </form>
             </div>
 
diff --git a/web/src/main/resources/templates/learn/chapter.html b/web/src/main/resources/templates/learn/chapter.html
index 4b170ed..ae3e246 100644
--- a/web/src/main/resources/templates/learn/chapter.html
+++ b/web/src/main/resources/templates/learn/chapter.html
@@ -16,19 +16,19 @@
 
     <div th:if="${currentUser != null and currentUser.admin}" class="flex flex-wrap gap-2 mb-4">
         <button class="btn btn-primary" type="button" data-modal="modal-new-section">+ Раздел</button>
-        <button class="mini-btn" type="button" data-modal="modal-rename-chapter" title="Переименовать главу" aria-label="Переименовать главу"><span class="cell-ico ico ico-pencil" aria-hidden="true"></span></button>
+        <button class="mini-btn" type="button" data-modal="modal-rename-chapter" title="Переименовать главу" aria-label="Переименовать главу"><i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i></button>
         <form class="inline-form" th:action="@{/admin/content/chapters/toggle-published}" method="post">
             <input type="hidden" name="_csrf" th:value="${csrfToken}">
             <input type="hidden" name="id" th:value="${chapter.id}">
             <input type="hidden" name="published" th:value="${!chapter.published}">
             <input type="hidden" name="back" th:value="${back}">
-            <button class="mini-btn" type="submit" th:if="${chapter.published}" title="Скрыть главу" aria-label="Скрыть главу"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-            <button class="mini-btn" type="submit" th:unless="${chapter.published}" title="Опубликовать главу" aria-label="Опубликовать главу"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+            <button class="mini-btn" type="submit" th:if="${chapter.published}" title="Скрыть главу" aria-label="Скрыть главу"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+            <button class="mini-btn" type="submit" th:unless="${chapter.published}" title="Опубликовать главу" aria-label="Опубликовать главу"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
         </form>
         <form class="inline-form" th:action="@{/admin/content/chapters/{id}/delete(id=${chapter.id})}" method="post" data-confirm="Удалить главу со всеми разделами и статьями?">
             <input type="hidden" name="_csrf" th:value="${csrfToken}">
             <input type="hidden" name="back" th:value="${backParent}">
-            <button class="mini-btn danger" type="submit" title="Удалить главу со всеми разделами и статьями" aria-label="Удалить главу со всеми разделами и статьями"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+            <button class="mini-btn danger" type="submit" title="Удалить главу со всеми разделами и статьями" aria-label="Удалить главу со всеми разделами и статьями"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
         </form>
     </div>
 
@@ -50,30 +50,30 @@
             <div class="sub-head sort-row">
                 <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                       th:attr="data-drag-kind='section',data-drag-id=${section.id}"
-                      title="Перетащите мышью: изменить порядок разделов">⠿</span>
+                      title="Перетащите мышью: изменить порядок разделов"><i class="bi bi-grip-vertical"></i></span>
                 <button type="button" class="sub-toggle" aria-expanded="false"
                         title="Свернуть или развернуть раздел">
-                    <span class="sub-arrow" aria-hidden="true"><span class="cell-ico ico ico-chevron-down" aria-hidden="true"></span></span>
+                    <span class="sub-arrow" aria-hidden="true"><i class="cell-ico ico bi bi-chevron-down" aria-hidden="true"></i></span>
                 </button>
                 <a class="group-title sort-title m-0"
                    th:href="@{/learn/{c}/{s}(c=${chapter.slug}, s=${section.slug})}"
                    th:text="${section.title}">Раздел</a>
                 <span th:if="${!section.published}" class="badge badge-warn">скрыто</span>
                 <div th:if="${currentUser != null and currentUser.admin}" class="sort-actions">
-                    <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-section-${section.id}|" title="Переименовать раздел" aria-label="Переименовать раздел"><span class="cell-ico ico ico-pencil" aria-hidden="true"></span></button>
+                    <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-section-${section.id}|" title="Переименовать раздел" aria-label="Переименовать раздел"><i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i></button>
                     <form class="inline-form" th:action="@{/admin/content/sections/toggle-published}" method="post">
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
                         <input type="hidden" name="id" th:value="${section.id}">
                         <input type="hidden" name="published" th:value="${!section.published}">
                         <input type="hidden" name="back" th:value="${back}">
-                        <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                        <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                        <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                        <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                     </form>
-                    <button class="mini-btn" type="button" th:attr="data-modal=|modal-move-${section.id}|" title="Перенести статьи и удалить" aria-label="Перенести статьи и удалить"><span class="cell-ico ico ico-hand" aria-hidden="true"></span></button>
+                    <button class="mini-btn" type="button" th:attr="data-modal=|modal-move-${section.id}|" title="Перенести статьи и удалить" aria-label="Перенести статьи и удалить"><i class="cell-ico ico bi bi-arrow-left-right" aria-hidden="true"></i></button>
                     <form class="inline-form" th:action="@{/admin/content/sections/{id}/delete(id=${section.id})}" method="post" data-confirm="Удалить раздел вместе со статьями?">
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
                         <input type="hidden" name="back" th:value="${back}">
-                        <button class="mini-btn danger" type="submit" title="Удалить раздел вместе со статьями" aria-label="Удалить раздел вместе со статьями"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+                        <button class="mini-btn danger" type="submit" title="Удалить раздел вместе со статьями" aria-label="Удалить раздел вместе со статьями"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
                     </form>
                 </div>
             </div>
@@ -83,21 +83,21 @@
                     <li th:each="article : ${section.articles}" th:attr="data-article-id=${article.id}">
                         <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                               th:attr="data-drag-kind='article',data-drag-id=${article.id}"
-                              title="Перетащите мышью: изменить порядок или перенести в другой раздел">⠿</span>
+                              title="Перетащите мышью: изменить порядок или перенести в другой раздел"><i class="bi bi-grip-vertical"></i></span>
                         <a class="sort-title"
                            th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug})}"
                            th:text="${article.title}">Статья</a>
                         <span th:if="${!article.published}" class="badge badge-warn">скрыто</span>
                         <div th:if="${currentUser != null and currentUser.admin}" class="sort-actions">
                             <a class="mini-btn" title="Править статью" aria-label="Править статью"
-                               th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><span class="ico ico-pencil" aria-hidden="true"></span></a>
+                               th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><i class="ico bi bi-pencil" aria-hidden="true"></i></a>
                             <form class="inline-form" th:action="@{/admin/content/articles/toggle-published}" method="post">
                                 <input type="hidden" name="_csrf" th:value="${csrfToken}">
                                 <input type="hidden" name="id" th:value="${article.id}">
                                 <input type="hidden" name="published" th:value="${!article.published}">
                                 <input type="hidden" name="back" th:value="${back}">
-                                <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                                <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                                <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                                <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                             </form>
                         </div>
                     </li>
diff --git a/web/src/main/resources/templates/learn/index.html b/web/src/main/resources/templates/learn/index.html
index d95c90d..a0f8d59 100644
--- a/web/src/main/resources/templates/learn/index.html
+++ b/web/src/main/resources/templates/learn/index.html
@@ -24,7 +24,7 @@
         <div class="sort-row">
             <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                   th:attr="data-drag-kind='chapter',data-drag-id=${chapter.id}"
-                  title="Перетащите мышью: изменить порядок глав">⠿</span>
+                  title="Перетащите мышью: изменить порядок глав"><i class="bi bi-grip-vertical"></i></span>
             <h2 class="section-title sort-title m-0" th:text="${chapter.title}">Глава</h2>
             <span th:if="${!chapter.published}" class="badge badge-warn">скрыто</span>
             <div th:if="${currentUser != null and currentUser.admin}" class="sort-actions">
@@ -32,13 +32,13 @@
                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
                     <input type="hidden" name="id" th:value="${chapter.id}">
                     <input type="hidden" name="published" th:value="${!chapter.published}">
-                    <button class="mini-btn" type="submit" th:if="${chapter.published}" title="Скрыть главу" aria-label="Скрыть главу"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                    <button class="mini-btn" type="submit" th:unless="${chapter.published}" title="Опубликовать главу" aria-label="Опубликовать главу"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                    <button class="mini-btn" type="submit" th:if="${chapter.published}" title="Скрыть главу" aria-label="Скрыть главу"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                    <button class="mini-btn" type="submit" th:unless="${chapter.published}" title="Опубликовать главу" aria-label="Опубликовать главу"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                 </form>
-                <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-chapter-${chapter.id}|" title="Переименовать главу" aria-label="Переименовать главу"><span class="cell-ico ico ico-pencil" aria-hidden="true"></span></button>
+                <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-chapter-${chapter.id}|" title="Переименовать главу" aria-label="Переименовать главу"><i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i></button>
                 <form class="inline-form" th:action="@{/admin/content/chapters/{id}/delete(id=${chapter.id})}" method="post" data-confirm="Удалить главу со всеми разделами и статьями?">
                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
-                    <button class="mini-btn danger" type="submit" title="Удалить главу со всеми разделами и статьями" aria-label="Удалить главу со всеми разделами и статьями"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+                    <button class="mini-btn danger" type="submit" title="Удалить главу со всеми разделами и статьями" aria-label="Удалить главу со всеми разделами и статьями"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
                 </form>
             </div>
         </div>
@@ -51,10 +51,10 @@
                 <div class="sub-head sort-row">
                     <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                           th:attr="data-drag-kind='section',data-drag-id=${section.id}"
-                          title="Перетащите мышью: изменить порядок или перенести раздел">⠿</span>
+                          title="Перетащите мышью: изменить порядок или перенести раздел"><i class="bi bi-grip-vertical"></i></span>
                     <button type="button" class="sub-toggle" aria-expanded="false"
                             title="Свернуть или развернуть раздел">
-                        <span class="sub-arrow" aria-hidden="true"><span class="cell-ico ico ico-chevron-down" aria-hidden="true"></span></span>
+                        <span class="sub-arrow" aria-hidden="true"><i class="cell-ico ico bi bi-chevron-down" aria-hidden="true"></i></span>
                     </button>
                     <a class="group-title sort-title m-0"
                        th:href="@{/learn/{c}/{s}(c=${chapter.slug}, s=${section.slug})}"
@@ -65,14 +65,14 @@
                             <input type="hidden" name="_csrf" th:value="${csrfToken}">
                             <input type="hidden" name="id" th:value="${section.id}">
                             <input type="hidden" name="published" th:value="${!section.published}">
-                            <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                            <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                            <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                            <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                         </form>
-                        <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-section-${section.id}|" title="Переименовать раздел" aria-label="Переименовать раздел"><span class="cell-ico ico ico-pencil" aria-hidden="true"></span></button>
-                        <button class="mini-btn" type="button" th:attr="data-modal=|modal-move-${section.id}|" title="Перенести статьи в другой раздел" aria-label="Перенести статьи в другой раздел"><span class="cell-ico ico ico-hand" aria-hidden="true"></span></button>
+                        <button class="mini-btn" type="button" th:attr="data-modal=|modal-rename-section-${section.id}|" title="Переименовать раздел" aria-label="Переименовать раздел"><i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i></button>
+                        <button class="mini-btn" type="button" th:attr="data-modal=|modal-move-${section.id}|" title="Перенести статьи в другой раздел" aria-label="Перенести статьи в другой раздел"><i class="cell-ico ico bi bi-arrow-left-right" aria-hidden="true"></i></button>
                         <form class="inline-form" th:action="@{/admin/content/sections/{id}/delete(id=${section.id})}" method="post" data-confirm="Удалить раздел со всеми статьями?">
                             <input type="hidden" name="_csrf" th:value="${csrfToken}">
-                            <button class="mini-btn danger" type="submit" title="Удалить раздел со всеми статьями" aria-label="Удалить раздел со всеми статьями"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+                            <button class="mini-btn danger" type="submit" title="Удалить раздел со всеми статьями" aria-label="Удалить раздел со всеми статьями"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
                         </form>
                     </div>
                 </div>
@@ -82,7 +82,7 @@
                         <li th:each="article : ${section.articles}" th:attr="data-article-id=${article.id}">
                             <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                                   th:attr="data-drag-kind='article',data-drag-id=${article.id}"
-                                  title="Перетащите мышью: изменить порядок или перенести статью">⠿</span>
+                                  title="Перетащите мышью: изменить порядок или перенести статью"><i class="bi bi-grip-vertical"></i></span>
                             <a class="sort-title"
                                th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug})}"
                                th:text="${article.title}">Статья</a>
@@ -92,14 +92,14 @@
                                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
                                     <input type="hidden" name="id" th:value="${article.id}">
                                     <input type="hidden" name="published" th:value="${!article.published}">
-                                    <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                                    <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                                    <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                                    <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                                 </form>
                                 <a class="mini-btn" title="Править статью" aria-label="Править статью"
-                                   th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><span class="ico ico-pencil" aria-hidden="true"></span></a>
+                                   th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><i class="ico bi bi-pencil" aria-hidden="true"></i></a>
                                 <form class="inline-form" th:action="@{/admin/content/articles/{id}/delete(id=${article.id})}" method="post" data-confirm="Удалить статью?">
                                     <input type="hidden" name="_csrf" th:value="${csrfToken}">
-                                    <button class="mini-btn danger" type="submit" title="Удалить статью" aria-label="Удалить статью"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+                                    <button class="mini-btn danger" type="submit" title="Удалить статью" aria-label="Удалить статью"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
                                 </form>
                             </div>
                         </li>
diff --git a/web/src/main/resources/templates/learn/section.html b/web/src/main/resources/templates/learn/section.html
index 55808c0..8c1d8c9 100644
--- a/web/src/main/resources/templates/learn/section.html
+++ b/web/src/main/resources/templates/learn/section.html
@@ -18,20 +18,20 @@
 
     <div th:if="${currentUser != null and currentUser.admin}" class="flex flex-wrap gap-2 mb-4">
         <button class="btn btn-primary" type="button" data-modal="modal-new-article">+ Статья</button>
-        <button class="mini-btn" type="button" data-modal="modal-rename-section" title="Переименовать раздел" aria-label="Переименовать раздел"><span class="cell-ico ico ico-pencil" aria-hidden="true"></span></button>
+        <button class="mini-btn" type="button" data-modal="modal-rename-section" title="Переименовать раздел" aria-label="Переименовать раздел"><i class="cell-ico ico bi bi-pencil" aria-hidden="true"></i></button>
         <form class="inline-form" th:action="@{/admin/content/sections/toggle-published}" method="post">
             <input type="hidden" name="_csrf" th:value="${csrfToken}">
             <input type="hidden" name="id" th:value="${section.id}">
             <input type="hidden" name="published" th:value="${!section.published}">
             <input type="hidden" name="back" th:value="${back}">
-            <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-            <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+            <button class="mini-btn" type="submit" th:if="${section.published}" title="Скрыть раздел" aria-label="Скрыть раздел"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+            <button class="mini-btn" type="submit" th:unless="${section.published}" title="Опубликовать раздел" aria-label="Опубликовать раздел"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
         </form>
-        <button class="mini-btn" type="button" data-modal="modal-move-section" title="Перенести статьи и удалить" aria-label="Перенести статьи и удалить"><span class="cell-ico ico ico-hand" aria-hidden="true"></span></button>
+        <button class="mini-btn" type="button" data-modal="modal-move-section" title="Перенести статьи и удалить" aria-label="Перенести статьи и удалить"><i class="cell-ico ico bi bi-arrow-left-right" aria-hidden="true"></i></button>
         <form class="inline-form" th:action="@{/admin/content/sections/{id}/delete(id=${section.id})}" method="post" data-confirm="Удалить раздел вместе со статьями?">
             <input type="hidden" name="_csrf" th:value="${csrfToken}">
             <input type="hidden" name="back" th:value="${backParent}">
-            <button class="mini-btn danger" type="submit" title="Удалить раздел вместе со статьями" aria-label="Удалить раздел вместе со статьями"><span class="cell-ico ico ico-trash" aria-hidden="true"></span></button>
+            <button class="mini-btn danger" type="submit" title="Удалить раздел вместе со статьями" aria-label="Удалить раздел вместе со статьями"><i class="cell-ico ico bi bi-trash" aria-hidden="true"></i></button>
         </form>
     </div>
 
@@ -50,21 +50,21 @@
                 <td>
                     <span th:if="${currentUser != null and currentUser.admin}" class="drag-handle" draggable="true"
                           th:attr="data-drag-kind='article',data-drag-id=${article.id}"
-                          title="Перетащите, чтобы изменить порядок статей">⠿</span>
+                          title="Перетащите, чтобы изменить порядок статей"><i class="bi bi-grip-vertical"></i></span>
                     <a th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug})}"
                        th:text="${article.title}">—</a>
                     <span th:if="${!article.published}" class="badge badge-warn ml-1">скрыто</span>
                 </td>
                 <td class="text-right actions-cell">
                     <a class="mini-btn" title="Править статью" aria-label="Править статью"
-                       th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><span class="ico ico-pencil" aria-hidden="true"></span></a>
+                       th:href="@{/learn/{c}/{s}/{a}(c=${chapter.slug}, s=${section.slug}, a=${article.slug}, edit=1)}"><i class="ico bi bi-pencil" aria-hidden="true"></i></a>
                     <form class="inline-form" th:action="@{/admin/content/articles/toggle-published}" method="post">
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
                         <input type="hidden" name="id" th:value="${article.id}">
                         <input type="hidden" name="published" th:value="${!article.published}">
                         <input type="hidden" name="back" th:value="${back}">
-                        <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><span class="cell-ico ico ico-eye-open" aria-hidden="true"></span></button>
-                        <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><span class="cell-ico ico ico-eye-closed" aria-hidden="true"></span></button>
+                        <button class="mini-btn" type="submit" th:if="${article.published}" title="Скрыть статью" aria-label="Скрыть статью"><i class="cell-ico ico bi bi-eye" aria-hidden="true"></i></button>
+                        <button class="mini-btn" type="submit" th:unless="${article.published}" title="Опубликовать статью" aria-label="Опубликовать статью"><i class="cell-ico ico bi bi-eye-slash" aria-hidden="true"></i></button>
                     </form>
                     <form class="inline-form" th:action="@{/admin/content/articles/{id}/delete(id=${article.id})}" method="post" data-confirm="Удалить статью?">
                         <input type="hidden" name="_csrf" th:value="${csrfToken}">
diff --git a/web/src/main/resources/templates/student/dashboard.html b/web/src/main/resources/templates/student/dashboard.html
index 18a1fca..4e25e58 100644
--- a/web/src/main/resources/templates/student/dashboard.html
+++ b/web/src/main/resources/templates/student/dashboard.html
@@ -5,19 +5,19 @@
 <div id="content">
     <h1 class="page-title">Здравствуйте, <span th:text="${currentUser.name}">студент</span></h1>
 
-    <div class="grid grid-stats">
-        <div class="card card-body"><p class="stat-title">Сдано работ</p>
-            <p class="stat-value" th:text="${submittedCount}">0</p></div>
-        <div class="card card-body"><p class="stat-title">Средний балл</p>
+    <div class="row row-cols-1 row-cols-sm-2 row-cols-xl-4 g-3">
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Сдано работ</p>
+            <p class="stat-value" th:text="${submittedCount}">0</p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Средний балл</p>
             <p class="stat-value" th:if="${average != null}" th:text="${average}">—</p>
-            <p class="stat-value text-muted" th:if="${average == null}">—</p></div>
-        <div class="card card-body"><p class="stat-title">Лучшая оценка</p>
+            <p class="stat-value text-muted" th:if="${average == null}">—</p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Лучшая оценка</p>
             <p class="stat-value" th:if="${best != null}" th:text="${best.toPlainString()}">—</p>
-            <p class="stat-value text-muted" th:if="${best == null}">—</p></div>
-        <div class="card card-body"><p class="stat-title">Слабое место</p>
+            <p class="stat-value text-muted" th:if="${best == null}">—</p></div></div>
+        <div class="col"><div class="card card-body h-100"><p class="stat-title">Слабое место</p>
             <p class="stat-value" th:if="${worst != null}" th:text="${worst.toPlainString()}">—</p>
-            <p class="stat-value text-muted" th:if="${worst == null}">—</p></div>
-    </div>
+            <p class="stat-value text-muted" th:if="${worst == null}">—</p></div></div>
+        </div>
 
     <div class="flex flex-wrap gap-2 mt-8">
         <a class="btn btn-primary" th:href="@{/student/labs}">Лабораторные</a>
@@ -25,8 +25,8 @@
     </div>
 
     <h2 class="section-title mt-8">Мои лабораторные</h2>
-    <div class="grid grid-2">
-        <div th:each="c : ${cards}" class="card">
+    <div class="row row-cols-1 row-cols-lg-2 g-4">
+        <div th:each="c : ${cards}" class="col"><div class="card h-100">
             <div class="card-body">
                 <h3 class="section-title">
                     <a th:href="@{/student/labs/{id}(id=${c.id})}" th:text="|Лабораторная работа ${c.number}|">ЛР</a>
@@ -40,6 +40,7 @@
                 </div>
             </div>
         </div>
+        </div>
         <div th:if="${#lists.isEmpty(cards)}" class="card card-body text-muted">Лабораторных пока нет.</div>
     </div>
 </div>
diff --git a/web/src/main/resources/templates/student/labs.html b/web/src/main/resources/templates/student/labs.html
index efea1bb..9e9605f 100644
--- a/web/src/main/resources/templates/student/labs.html
+++ b/web/src/main/resources/templates/student/labs.html
@@ -4,8 +4,8 @@
 <body>
 <div id="content">
     <h1 class="page-title">Лабораторные работы</h1>
-    <div class="grid grid-2">
-        <div th:each="c : ${cards}" class="card">
+    <div class="row row-cols-1 row-cols-lg-2 g-4">
+        <div th:each="c : ${cards}" class="col"><div class="card h-100">
             <div class="card-body">
                 <h2 class="section-title">
                     <a th:href="@{/student/labs/{id}(id=${c.id})}" th:text="|Лабораторная работа ${c.number}. ${c.title}|">ЛР</a>
@@ -23,6 +23,7 @@
                 </p>
             </div>
         </div>
+        </div>
         <div th:if="${#lists.isEmpty(cards)}" class="card card-body text-muted">Опубликованных лабораторных пока нет.</div>
     </div>
 </div>