Redesign typography, add image rounding and smooth loading

- Global headings: drop ALL CAPS, use sentence case + weight 700
- Post cards: refined date (small/uppercase/muted), cleaner title hierarchy
- Single post: date metadata style, subtitle no-italic, body line-height 1.75
- Logo frame (#header .logo): border-radius 12px
- All images: border-radius 8px (posts), 6px (gallery)
- Smooth lazy-load: CSS fadeIn animation + JS fallback (image-fade.js)
- Cache-busting: typography CSS with Hugo timestamp query string
- Trip card: replace broken gallery link with direct Elbrus S3 image URL

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

layouts/partials/scripts/index.html

@@ -0,0 +1,15 @@
+{{ $jQuery := resources.Get "js/jquery.min.js" }}
+{{ $scrollex := resources.Get "js/jquery.scrollex.min.js" }}
+{{ $scrolly := resources.Get "js/jquery.scrolly.min.js" }}
+{{ $browser := resources.Get "js/browser.min.js" }}
+{{ $breakpoints := resources.Get "js/breakpoints.min.js" }}
+{{ $util := resources.Get "js/util.js" }}
+{{ $main := resources.Get "js/main.js" }}
+
+{{ $js := slice $jQuery $scrollex $scrolly $browser $breakpoints $util $main | resources.Concat "assets/js/bundle.js" }}
+
+<!-- Scripts -->
+<script src='{{ $js.RelPermalink }}' defer></script>
+
+<!-- Плавное появление lazy-loaded изображений -->
+<script src="/js/image-fade.js" defer></script>