Pure white background. No apology. The surface is Stone 50 (#FAFAF9), the warmest near-white. Surface hover is Stone 100 (#F5F5F4). Text is Stone 900 (#1C1917). This is brown-black, not blue-black. It has warmth in the darkest tone. The muted text (#57534E) is Stone 600. Borders are warm light gray (#D8D6D5). Every single neutral in this system has a warm undertone. Not a single cool gray anywhere.

Inter at weight 600 for headings with -0.014em letter-spacing. Clean and confident without being aggressive. The tracking is slightly looser than most in this catalog, which gives headings a more relaxed presence. At 1.2 heading line height, those 600-weight headers sit comfortably above the content.

Body text at weight 400 with generous 1.75 line height and 1.5em paragraph spacing. At 18px base size with spacious density, this is built for sustained reading. Email marketers write long-form content. They need a system that makes that pleasant. The warmth here is entirely in the color system. The typography is neutral, letting the Stone palette carry all the personality. JetBrains Mono for code handles templates and merge tags.

Barely-there shadows. 1px 3px at 6% opacity primary, 1px 2px at 4% secondary. Warm surfaces don't need much shadow to create depth. Cards feel like they're resting, not floating. The large shadow at 25px 50px is available for elevated panels but rarely needed. Borders do more depth work than shadows in this system. Lift hover effects create gentle upward movement. Smooth motion speed keeps interactions calm and confident. Subtle surface noise gives every warm surface a tactile, almost paper-like quality. The entire atmosphere is warm, grounded, and reassuring. Like a tool that's been in your life for years.