Waitlist Page Skill

Pre-launch pages are your first handshake with future users. This skill builds a focused, honest entrance: your brand identity, what you're making, one clear path to join the early list. No artificial scarcity, no fake countdown, no inflation tactics—just a clean, mobile-first vessel for genuine interest.

Workflow

Preflight: Load hardened template and brand foundation

0. Load the brand identity — Read DESIGN.md for the color system, font pairing, and spatial rules. This is your foundation. A waitlist page lives or dies by consistency with the brand it represents. If DESIGN.md is missing, ask the user to provide one before you proceed.
1. Read and copy the reusable template — Read assets/template.html. This template is the hardened seed for all outputs. Copy it to index.html as your base. Do not write HTML from scratch or deviate from this structure. The template has all required layout, form structure, decorations, focus styles, and accessibility scaffolding baked in.

Steps: Token replacement with validation and escaping

2. Map tokens from inputs — For each placeholder in the template (e.g., {{PRODUCT_NAME}}, {{BG_EXPRESSION}}, {{BORDER_EXPRESSION}}, {{LOGO_MARK}}), follow the replacement rules below:
   • Text tokens ({{PRODUCT_NAME}}, {{TAGLINE}}): HTML-escape <, >, &, ", ' before insertion into HTML text nodes or attribute values.
   • HTML tokens ({{LOGO_MARK}}): If using text initials, HTML-escape them by default. If using inline SVG, you must strictly sanitize it using an allowlist: strip <script> tags, event handlers (on*), <foreignObject>, external refs (href, xlink:href, url()), and any disallowed attributes/elements before insertion. If the SVG cannot be safely sanitized, fallback to escaped text initials. Never emit raw, unsanitized arbitrary HTML. Ensure any SVG scales cleanly within its container.
   • Color expression tokens ({{BG_EXPRESSION}}, {{FG_EXPRESSION}}, {{ACCENT_EXPRESSION}}, {{DECO_EXPRESSION}}, {{STRIPE_EXPRESSION}}, {{SUCCESS_EXPRESSION}}, {{BORDER_EXPRESSION}}, {{BTN_LABEL_EXPRESSION}}, {{TICKER_BG_EXPRESSION}}, {{TICKER_FG_EXPRESSION}}, {{DECO_STROKE_EXPRESSION}}, {{LOGO_SHADOW_EXPRESSION}}, {{LOGO_FG_EXPRESSION}}): Must strictly adhere to an explicit color grammar (#hex, rgb/rgba, hsl/hsla, oklch, or color-mix() using only local variables). Hard reject any input containing ;, {}, <, >, comments (/*), @, url(, or external refs to prevent CSS injection. Do not wrap in # or add extra quotes. Examples: rgba(196, 169, 154, 0.38), color-mix(in srgb, var(--fg) 38%, transparent), #FDE8DF. Insert as-is into :root CSS variables. Derive --success from DESIGN.md if present; otherwise use the allowed fallback #2D6A4F only.
   • Font name tokens ({{DISPLAY_FONT_CSS}}, {{BODY_FONT_CSS}}): These are CSS font-family values, already quoted if they contain spaces (e.g., 'DM Sans', Syne). Insert as-is into --font-display and --font-body declarations; do NOT add extra quotes.
   • Font URL tokens ({{DISPLAY_FONT_URL}}, {{BODY_FONT_URL}}): Spaces must be encoded as + for the Google Fonts URL (e.g., DM+Sans, IBM+Plex+Serif). Validate the URL is well-formed before insertion.
3. Verify token mapping rules — All color tokens are now in CSS variables:
   • --bg = {{BG_EXPRESSION}} (e.g., #FDE8DF)
   • --fg = {{FG_EXPRESSION}} (e.g., #1A1410)
   • --accent = {{ACCENT_EXPRESSION}} (brand badge)
   • --deco = {{DECO_EXPRESSION}} (decoration primary)
   • --deco-stripe = {{STRIPE_EXPRESSION}} (accent stripe)
   • --input-border = {{BORDER_EXPRESSION}} (full CSS expression with opacity)
   • --success = {{SUCCESS_EXPRESSION}} or #2D6A4F fallback
   • --btn-label = {{BTN_LABEL_EXPRESSION}} (button text color for contrast)
   • --ticker-bg = {{TICKER_BG_EXPRESSION}} (animated ticker background)
   • --ticker-fg = {{TICKER_FG_EXPRESSION}} (animated ticker text)
   • --deco-stroke = {{DECO_STROKE_EXPRESSION}} (SVG strokes, typically muted with 12–15% opacity)
   • --logo-shadow = {{LOGO_SHADOW_EXPRESSION}} (logo container shadow, subtle foreground shade)
   • --logo-fg = {{LOGO_FG_EXPRESSION}} (contrasting text color for logo initials)
4. Responsive layout — The template includes mobile-first scaling:

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