Contrail

Style: bold flat, deep teal-black canvas, amber/gold accent.

Layout: centered hero with a split-flap departure-board numeral display.

Components: amber split-flap "404" digit panels, bold white "Diverted." headline, gray subcopy, dark pill "Return to the gate" button with arrow, airplane-icon logo, top nav.

Vibe: bold, witty, travel/flight-booking app.