design-systems: add 74 brand DESIGN.md files (VoltAgent/awesome-design-md)

- 74 brands: airbnb, stripe, apple, figma, linear, vercel, etc.
- 147 files: DESIGN.md + README.md per brand (~2.1 MB)
- Each DESIGN.md contains structured brand analysis (colors, typography, components)
- Updated 00-overview.md with new design-systems directory

layout/card-grid.md

@@ -0,0 +1,89 @@
+---
+name: layout/card-grid
+title: Card Grid with Hover States
+description: Responsive card grids with hover animations and shadows.
+tags: [layout, grid, card, hover, responsive]
+source: raycast.com, linear.app, resend.com, stripe.com
+---
+
+# Card Grid Layout
+
+## CSS Grid
+
+```css
+.card-grid {
+  display: grid;
+  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
+  gap: 24px;
+}
+```
+
+## Card Structure
+
+```html
+<article class="card">
+  <div class="card-icon">📊</div>
+  <h3 class="card-title">Заголовок</h3>
+  <p class="card-description">Описание фичи...</p>
+  <a href="#" class="card-link">Подробнее →</a>
+</article>
+```
+
+```css
+.card {
+  background: var(--color-surface);
+  border: 1px solid var(--color-border);
+  border-radius: 20px;
+  padding: 32px;
+  transition: all 0.3s ease;
+  display: flex;
+  flex-direction: column;
+}
+.card:hover {
+  border-color: var(--color-accent);
+  transform: translateY(-4px);
+  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
+}
+.card-icon {
+  width: 48px;
+  height: 48px;
+  background: rgba(99, 102, 241, 0.1);
+  border-radius: 12px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+  font-size: 24px;
+  margin-bottom: 20px;
+}
+.card-title {
+  font-size: 1.25rem;
+  font-weight: 700;
+  margin-bottom: 8px;
+}
+.card-description {
+  color: var(--color-text-secondary);
+  flex: 1;
+  margin-bottom: 16px;
+}
+.card-link {
+  color: var(--color-accent);
+  font-weight: 600;
+  text-decoration: none;
+  display: inline-flex;
+  align-items: center;
+  gap: 4px;
+  transition: gap 0.3s ease;
+}
+.card-link:hover {
+  gap: 8px;
+}
+```
+
+## Anti-patterns
+
+| ❌ Плохо | ✅ Хорошо |
+|----------|-----------|
+| `min-width: 200px` | `min-width: 300px` |
+| Без `auto-fit` | `grid-template-columns: repeat(auto-fit, ...)` |
+| Без hover | `transform: translateY(-4px)` |
+| Без `flex: 1` | `flex: 1` для описания |