diff --git a/EXHAUSTIVE_TODO_LIST.md b/EXHAUSTIVE_TODO_LIST.md
index 07955b800..1cdcbc8f4 100644
--- a/EXHAUSTIVE_TODO_LIST.md
+++ b/EXHAUSTIVE_TODO_LIST.md
@@ -2427,12 +2427,17 @@ Critical path dependencies:
 ### Sub-Epic 7.2: Spacing System ✅ QUICK WIN
 
 #### Task 7.2.1: Define Spacing Scale
-- [ ] **Action 7.2.1.1**: Add spacing scale to design tokens
+- [x] **Action 7.2.1.1**: Add spacing scale to design tokens
   - **Scope**: `apps/web/src/styles/design-tokens.css` - Add `--spacing-xs` through `--spacing-xxl`
-  - **Dependencies**: None
+  - **Dependencies**: None ✅
   - **Risk**: LOW 🔒
-  - **Validation**: All spacing values defined
-  - **Rollback**: Remove CSS variables
+  - **Validation**: ✅ Added semantic spacing scale to design tokens:
+    - **Semantic spacing variables added**: `--spacing-xs` (4px), `--spacing-sm` (8px), `--spacing-md` (16px), `--spacing-lg` (24px), `--spacing-xl` (32px), `--spacing-2xl` (48px), `--spacing-3xl` (64px), `--spacing-4xl` (80px), `--spacing-5xl` (96px), `--spacing-xxl` (96px, alias)
+    - **Numeric scale preserved**: Existing `--spacing-0` through `--spacing-24` remain unchanged
+    - **Documentation added**: Comments explain semantic vs numeric scale usage
+    - **Mapping**: Semantic scale maps to numeric scale for consistency (xs=1, sm=2, md=4, lg=6, xl=8, 2xl=12, 3xl=16, 4xl=20, 5xl/xxl=24)
+    - Both scales available: numeric for precise control, semantic for design system consistency
+  - **Rollback**: Remove semantic spacing variables
 
 - [ ] **Action 7.2.1.2**: Audit all spacing classes
   - **Scope**: Search for `space-y-`, `space-x-`, `gap-`, `p-`, `m-`, `px-`, `py-`, `mx-`, `my-` - List all spacing usage
diff --git a/apps/web/src/styles/design-tokens.css b/apps/web/src/styles/design-tokens.css
index fb463f69d..405b5f495 100644
--- a/apps/web/src/styles/design-tokens.css
+++ b/apps/web/src/styles/design-tokens.css
@@ -4,6 +4,7 @@
 
 @theme {
   /* === SPACING SCALE (4px base) === */
+  /* Numeric scale (for precise control) */
   --spacing-0: 0;
   --spacing-1: 0.25rem; /* 4px */
   --spacing-2: 0.5rem; /* 8px */
@@ -18,6 +19,18 @@
   --spacing-20: 5rem; /* 80px */
   --spacing-24: 6rem; /* 96px */
 
+  /* Semantic scale (for design system consistency) */
+  --spacing-xs: 0.25rem; /* 4px - Extra small spacing */
+  --spacing-sm: 0.5rem; /* 8px - Small spacing */
+  --spacing-md: 1rem; /* 16px - Medium spacing (base) */
+  --spacing-lg: 1.5rem; /* 24px - Large spacing */
+  --spacing-xl: 2rem; /* 32px - Extra large spacing */
+  --spacing-2xl: 3rem; /* 48px - 2X large spacing */
+  --spacing-3xl: 4rem; /* 64px - 3X large spacing */
+  --spacing-4xl: 5rem; /* 80px - 4X large spacing */
+  --spacing-5xl: 6rem; /* 96px - 5X large spacing */
+  --spacing-xxl: 6rem; /* 96px - Extra extra large spacing (alias for 5xl) */
+
   /* === TYPOGRAPHY SCALE === */
   --font-sans:
     'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;