diff --git a/IMPLEMENTATION_PLAN.md b/IMPLEMENTATION_PLAN.md
index 029e36d..fc72d3a 100644
--- a/IMPLEMENTATION_PLAN.md
+++ b/IMPLEMENTATION_PLAN.md
@@ -131,7 +131,7 @@
   - Card 3: Value "Pop. Health" (font-size 18px). Label "Focus Area".
   - Card 4: Value "NHS N&W" (font-size 18px). Label "System".
 
-- [ ] **Task 6: Build skills section with circular SVG progress gauges**
+- [x] **Task 6: Build skills section with circular SVG progress gauges**
 
   Skills section (`#skills`). Section heading "Skills & Expertise" in `font-size: 24px; font-weight: 700; color: var(--heading); margin-bottom: 32px; text-align: center;`.
 
diff --git a/progress.txt b/progress.txt
index 7fc1ef5..01d853b 100644
--- a/progress.txt
+++ b/progress.txt
@@ -80,3 +80,12 @@
 - Responsive: 768px → 2x2 CSS grid, 480px → single column stacked + h1 reduced to 28px
 - Vital cards have smooth hover transition: translateY(-2px) + shadow-md elevation
 - No new codebase pattern learnings — straightforward implementation following established patterns
+
+### Iteration 6 — Task 6: Build skills section with circular SVG progress gauges
+- Skills HTML/CSS/JS was already substantially built in previous iterations (5 built the HTML structure)
+- Polish additions: coral hover background for clinical skill items using `[data-color="coral"]:hover` selector
+- Moved `text-align: center` from inline style to `.section-heading` class for cleanliness
+- Confirmed responsive gauge sizing at 480px: CSS `width: 64px; height: 64px` overrides SVG presentation attributes since `viewBox` handles scaling
+- 18 skills total: 8 Technical (teal), 6 Clinical (coral), 4 Strategic (teal) — all with correct percentages
+- IntersectionObserver-based scroll animation with 100ms stagger is in place via `initSkillGauges()`
+- Learnings: SVG `width`/`height` attributes are presentation attributes; CSS can override them when a `viewBox` is set