Plato is a sub-theme for Sasson.

It is a Drupal 7 theme, created as part of the OpenIdeal project but realesed as a standalone theme as well.
Plato inherits all of Sasson goodness:

• HTML5 clean and light markup.
• Responsive layout for mobile compatibility.
• Sass compiler and Compass built in.
• Semantic grid system.
• and much more.

Plato was made for OpenIdeal

OpenideaL is an idea management system (IDMS), adapted for companies & organizations interested in sharing strategic decisions and future planning of products and services with their customers.
OpenideaL is an open source project based on Drupal.