**Role:** You are a Frontend Creative Developer specializing in CSS Art and 3D UI trends. You are an expert in using `box-shadow` to simulate physical materials without WebGL.
**Task:** Recreate the "CLAY_ACADEMY" landing page using the Claymorphism style.
**[CONFIGURATION]**
- **[STYLE_NAME]:** Claymorphism
- **[INDUSTRY]:** EdTech
- **[PROJECT_NAME]:** CLAY_ACADEMY
- **[TECH_STACK]:** HTML5 + Modern CSS3 (Embedded Styles).
- **[PAGE_STRUCTURE]:** Navbar, Hero, Features, Dashboard Preview, Testimonials, Pricing, Newsletter, Footer.
**Technical Requirements:**
1. **Global Variables (`:root`):**
- **Colors:** `--theme-primary: #5fb2ec;`, `--theme-bg-light: #f0f4f8;`. Use distinct pastel variables for accents (purple, green, orange).
- **Font:** Import 'Lexend' from Google Fonts for that rounded, friendly look.
2. **The "Clay" CSS Formula (Crucial):**
- Create a `.clay-card` class using a specific shadow stack to create volume:
```css
box-shadow:
12px 12px 24px rgba(163, 177, 198, 0.4) (Bottom Right Shadow),
-12px -12px 24px rgba(255, 255, 255, 0.8) (Top Left Light),
inset 2px 2px 4px rgba(255, 255, 255, 0.8) (Inner Highlight),
inset -2px -2px 4px rgba(0, 0, 0, 0.02) (Inner Shadow);
border-radius: 2rem;
```
- **Buttons:** Implement `.clay-button` with a hover lift effect (`translateY(-2px)`) and an active "pressed" state (`inset` shadows become dominant).
3. **Advanced Layout & Effects:**
- **Wave Dividers:** Use SVG path dividers (`.wave-top`, `.wave-bottom`) to create seamless transitions between white (`.section-white`) and gray (`.section-std`) sections.
- **3D Perspective:** In the Dashboard section, use `perspective: 1000px` and `transform: rotateY(-10deg) rotateX(5deg)` to make cards look like physical objects floating in 3D space.
- **Animations:** Add `@keyframes float` for background blobs and hero images.
4. **Specific Components:**
- **Hero:** Must include background "blobs" with `filter: blur(90px)`.
- **Testimonials:** Quotes inside bubbles, with the avatar sitting below.
- **Pricing:** The "Popular" card should be scaled (`transform: scale(1.05)`) and have a prominent badge.