Improve landing page visual polish

[jovanadinic]

Description:
The landing page currently looks visually strong overall, but some details make it feel slightly unfinished. The Inkling mascot appears slightly pixelated, the small explanatory icons under the hero section are not vertically aligned with their text, and the main CTA buttons use different visual styles.

Tasks:

• Replace or improve the Inkling mascot with a higher-quality version.
• Align the small icons with the text labels below the hero section.
• Make the landing page buttons visually consistent.
• Consider reducing the number of CTA buttons or clarifying their hierarchy.

Acceptance Criteria:

• Mascot appears crisp on standard desktop screens.
• Icons are vertically centered relative to their labels.
• CTA buttons follow a consistent visual system.
• Primary and secondary actions are clearly distinguishable.