A wind-blown flow field of sand particles for a desert festival.

Build a one-screen page for desert arts festival "DELTA DUNES" with React + Tailwind. Canvas flow field: 3000 sand-colored particles (#d9a066 on #1b0f0a, 1px trails, additive feel via low-alpha clears) pushed by a curl-ish sine vector field that slowly rotates over time, forming dune streaks. Fonts: "Marcellus SC" display, "Assistant" body. Headline centered: "Three nights where the map ends." Sub: "Sound, land art and star talks — 90 minutes past the last paved road." Info pills: "OCT 2-4", "WADI SEVEN", "CAP 1,200 SOULS". CTA "Claim a spot" in #d9a066 pill on dark. Headline appears letter-spaced wide then tightens (letter-spacing animation) as particles pick up.
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