Light theme redesign + reposition as AI grammar tool #4016

Originally written by @ccantynz-alt on GitHub.
Imported from https://github.com/ccantynz-alt/48co.v1/pull/21

DESIGN:

• White background, clean typography, subtle shadows
• System fonts (Inter/SF Pro), indigo accent (#4f46e5)
• Light gray sections (bg-gray-50) for visual rhythm
• Professional, trustworthy feel — think Notion/Apple/Grammarly
• No dark mode, no neon, no monospace, no glass panels

POSITIONING:

• Headline: "Everything you write, perfected by AI"
• Expanded from dictation tool to AI grammar + voice platform
• Demo shows grammar correction (before/after with strikethrough)
• "Works everywhere" section: Desktop, Chrome, iPhone, Android
• Before/After examples showing real grammar improvements
• Product now positioned against Grammarly, not just WhisperTyping

NEW SECTIONS:

• "Works everywhere you write" — 4 platform cards
• "More than just grammar" — 6 feature cards
• "See the difference" — 3 before/after examples
• Live voice demo preserved
• Pricing teaser with link to full page

https://claude.ai/code/session_01PBeNmPHrD2W6A2YKZRC7V3