Refine inline markup colors and add hero-shot demo

theme.css:
- Italic switches from paddock green to livery_blue_bright (#4D7EFF) —
  RBR carbody royal blue, AAA contrast, sparingly distinct from the trio.
- Blockquote foreground uses kerb_red_pure (#cc1e4a) so the quote text
  shares the red wash family with its border + background tint.
- .cm-quote (live preview / source mode token) now follows
  --blockquote-color so reading view and editor render the same color.
- .HyperMD-quote-* line classes and direct .markdown-rendered blockquote
  selectors enforce the color when external rules try to override.
- Strikethrough (~~text~~) now fades to subtext-0; covers .markdown-
  rendered del/s and .cm-strikethrough since Obsidian has no dedicated
  variable for it.

examples/hero-shot.md:
- New dense demo note that exercises every RBR visual element in one
  viewport: trio headings (h1-h6), bold/italic/highlight/strikethrough,
  yellow tag pills, four diagnostic callouts, syntax-highlighted Rust
  code, right-aligned table, mixed checkbox state, blockquote, internal
  + external + unresolved links. Use as the README hero shot source.

examples/hero-shot.md

@@ -0,0 +1,77 @@
+---
+created: 2026-05-07 11:50
+tags: [theme, hero, demo, rbr]
+---
+
+# RBR — Three-accent navy theme
+
+> Kerb red marks the **active**. RB yellow flags **attention**. Chequer white points to **functions**. Everything else steps back.
+
+## Trio at a glance #theme #obsidian #f1
+
+The trio drives every choice — **bold takes white**, *italic carries livery blue*, and ==yellow highlights== call you back. ~~Strikethrough~~ fades into subtext.
+
+### Diagnostics callouts
+
+> [!warning] Warning
+> RB Yellow flags what needs attention before the next lap.
+
+> [!tip] Tip
+> Paddock green carries success — added files, passing tests.
+
+> [!error] Error
+> Kerb **bright** owns errors and deletions. Kerb **red** is reserved for "this one."
+
+> [!info] Info
+> Oracle blue handles info, links, and the k8s context indicator.
+
+### Code — syntax trio
+
+```rust
+use std::collections::HashMap;
+
+/// Sector delta against the pole lap.
+/// Returns total time gained or lost across all sectors.
+pub fn lap_delta(reference: &Lap, current: &Lap) -> f64 {
+    let mut total = 0.0_f64;
+    for (sector, time) in current.sectors.iter().enumerate() {
+        total += time - reference.sectors[sector];
+    }
+    total
+}
+
+const PIT_LIMITER: f32 = 80.0;
+const DRS_ZONES: usize = 3;
+```
+
+Inline call: `lap_delta(&pole, &current)` — `lap_delta` lights up **chequer white** as the third accent at every call site.
+
+### Standings
+
+| # | Driver | Team | Best lap | Δ leader |
+|---:|---|---|---:|---:|
+| 1 | Verstappen | Red Bull | 1:18.234 | — |
+| 2 | Pérez | Red Bull | 1:18.501 | +0.267 |
+| 3 | Leclerc | Ferrari | 1:18.647 | +0.413 |
+
+### Lap notes
+
+1. Set up the corner
+2. Trail-brake to the apex
+3. Power down on exit
+
+- [x] Brake earlier into Turn 7
+- [ ] Carry more apex speed
+- [ ] Trail throttle on exit
+
+> "If you no longer go for a gap that exists, you are no longer a racing driver." — Ayrton Senna
+
+#### h4 — paddock green
+
+##### h5 — oracle blue
+
+###### h6 — sky blue
+
+---
+
+[Style Settings plugin](https://github.com/mgmeyers/obsidian-style-settings) · [[Architecture]] · [[NotAFile]]

theme.css

@@ -564,16 +564,26 @@ body.rbr-headings-trio .cm-header-6 {
 
   --bold-color:    var(--rbr-chequer-white);
   --bold-weight:   700;
-  --italic-color:  var(--rbr-paddock-green);
+  --italic-color:  var(--rbr-livery-blue-bright);
 
   --blockquote-border-color: var(--rbr-accent);
   --blockquote-background-color: rgba(var(--rbr-accent-rgb), 0.06);
-  --blockquote-color: var(--rbr-text);
+  --blockquote-color: var(--rbr-kerb-red-pure);
 
   --hr-color: var(--rbr-overlay-0);
   --hr-thickness: 2px;
 }
 
+/* Strikethrough — fade into subtext.
+   Obsidian has no dedicated variable for ~~text~~, so use direct selectors. */
+.markdown-rendered del,
+.markdown-rendered s,
+.markdown-preview-view del,
+.markdown-preview-view s,
+.cm-s-obsidian .cm-strikethrough {
+  color: var(--rbr-subtext-0);
+}
+
 /* ========================================================================
    Code — inline + block. Syntax tokens stay locked to RBR doctrine
    regardless of the active accent (keeps code legible).
@@ -621,7 +631,24 @@ body.rbr-headings-trio .cm-header-6 {
 .cm-s-obsidian span.cm-error         { color: var(--rbr-kerb-red-bright); }
 .cm-s-obsidian span.cm-header        { color: var(--rbr-accent); }
 .cm-s-obsidian span.cm-hr            { color: var(--rbr-overlay-0); }
-.cm-s-obsidian span.cm-quote         { color: var(--rbr-paddock-green); }
+.cm-s-obsidian span.cm-quote         { color: var(--blockquote-color); }
+
+/* Live-preview / source-mode quote line — Obsidian wraps each quoted line
+   in .HyperMD-quote, which doesn't go through --blockquote-color by default.
+   Force it so Reading view and Live preview match. */
+.cm-s-obsidian .HyperMD-quote,
+.cm-s-obsidian .HyperMD-quote-1,
+.cm-s-obsidian .HyperMD-quote-2,
+.cm-s-obsidian .HyperMD-quote-3 {
+  color: var(--blockquote-color) !important;
+}
+
+/* Reading view enforcement — some plugins/snippets paint blockquote color
+   directly on the <blockquote> rather than letting --blockquote-color cascade */
+.markdown-rendered blockquote,
+.markdown-preview-view blockquote {
+  color: var(--blockquote-color) !important;
+}
 
 /* ========================================================================
    Tables