feat(pulse-3d-landing): landing 3D completa — Atomic Design + Three.js + Design Tokens

- Atoms: Button, Badge, Card, GradientText, FloatingText, LightGlow, ThemeToggle, Typography
- Molecules: FloatingMesh, ParticleField, FeatureCard3d
- Organisms: HeroScene3d, FeaturesScene3d
- Templates: SceneCanvas, ThreePage (canvas + overlay 2D)
- Pages: App.tsx — Hero + FeaturesOverview + About + CTA wireframes
- Design Tokens completo: space/font/color/shadow/radius/material3d/camera3d/animation
- Globals CSS: reset, grid, scrollbar, focus-visible, light/dark mode
- Vite + React 18 + TypeScript + @react-three/fiber + drei + framer-motion
- npm install + dev server OK
- node_modules em .gitignore — commit apenas código fonte
- Repo standalone: pulse-3d-landing/

pulse-3d-landing/src/components/atoms/Divider.tsx

@@ -0,0 +1,16 @@
+import { CSSProperties } from 'react'
+import { tokens } from '../../systems/tokens'
+
+export function Divider({ vertical=false, style }: { vertical?: boolean; style?: CSSProperties }) {
+  return (
+    <hr style={{
+      border  : 'none',
+      height  : vertical ? '1px' : 'auto',
+      width   : vertical ? '1px' : '100%',
+      flex    : vertical ? 'none' : 1,
+      background: 'linear-gradient(90deg, transparent, rgba(37,99,235,.2), transparent)',
+      margin  : 0,
+      ...style,
+    }} />
+  )
+}