UX overhaul: glassmorphism nav/footer, forms redesign, mobile fixes

Navigation:
- Nav bar pill shape (border-radius: 100px), dark glass style
- Icons added to all nav items (FA4 outline variants, fixed-width alignment)
- Footer hidden on all devices (nav panel covers mobile)
- Footer nav icons + text added before removal

Forms (ask.md, plan.md):
- Full glassmorphism redesign: rounded card, blur backdrop
- Input borders visible (#b8c4ce), focus ring, proper placeholder colors
- Select: self-contained CSS, no backdrop-filter conflict, arrow fixed
- Submit button: gradient with shadow
- File upload button: .file-btn class, fa-arrow-down icon
- form-note styled as info callout with left border + ⓘ icon
- Footnotes sup.fn: circular badge, baseline positioning (no line-height jump)
- Footnote ¹ on both consent checkboxes, accordion = full legal text
- Dark mode: opaque dark card (rgba 22,26,34,0.88), proper contrast
- Dark mode success/error messages adapted
- Double checkmark bug fixed (removed ::after overlay)
- Italic removed from privacy-details text

Layout:
- #main rounded corners (20px all sides) + margin for visibility
- Post card images rounded (border-radius: 10px)
- Page titles: uppercase removed, font-weight 900, left-aligned
- "Подробнее" button hidden on post cards
- iOS background-attachment: fixed bug fixed (scroll on mobile)
- Pagination mobile: counter restored, buttons above footer

Content:
- Page titles uncommented in front matter (gallery, map, ask, plan)
- Duplicate rawhtml title blocks removed

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

static/css/mobile-menu.css

@@ -1,25 +1,29 @@
-/* Улучшенная мобильная кнопка меню */
+/* Кнопка открытия меню */
 #navPanelToggle {
-    background: rgba(255, 255, 255, 0.15) !important;
-    backdrop-filter: blur(10px) !important;
-    border: 1px solid rgba(255, 255, 255, 0.3) !important;
-    color: white !important;
-    text-shadow: 1px 1px 3px rgba(0, 0, 0, 0.8) !important;
-    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2) !important;
-    border-radius: 8px !important;
+    background: rgba(18, 22, 28, 0.75) !important;
+    backdrop-filter: blur(12px) !important;
+    -webkit-backdrop-filter: blur(12px) !important;
+    border: 1px solid rgba(255, 255, 255, 0.15) !important;
+    border-radius: 6px !important;
+    color: rgba(255, 255, 255, 0.9) !important;
+    text-shadow: none !important;
+    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.4) !important;
+    font-family: 'Source Sans Pro', Helvetica, sans-serif !important;
+    font-weight: 900 !important;
+    letter-spacing: 0.075em !important;
+    text-transform: uppercase !important;
 }
 
 #navPanelToggle:hover {
-    background: rgba(255, 255, 255, 0.25) !important;
-    transform: translateY(-1px) !important;
-    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3) !important;
+    background: rgba(18, 22, 28, 0.92) !important;
+    color: #ffffff !important;
+    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5) !important;
 }
 
-/* Улучшение для очень маленьких экранов */
+
 @media (max-width: 480px) {
     #navPanelToggle {
         font-size: 0.75rem !important;
         padding: 0.3rem 0.8rem !important;
-        backdrop-filter: blur(8px) !important;
     }
 }