style.css

```css
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

body {
    font-family: 'Inter', sans-serif;
}

.vanta-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 350px;
    z-index: 0;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 240px 1fr;
    grid-template-rows: 60px 1fr;
    min-height: 100vh;
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}
```