Plan step 35: <x-stack gap align>, the first of M3's layout components, with what they all share - src/Support/Layout.php reading the props into data-md-* attributes, the spacing-token gap and padding rules, the hide-below/hide-from rules in material.visibility, the stylesheet checks for resources/css/layout, the browser test file and the skill's Layout group. The Workbench puts the material layers above Tailwind's preflight, which would otherwise zero every layout padding and margin. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01Qwx5USif3wFFmxtHg5U1g9