A cozy Brazilian home at dusk during December. Warm golden LED string lights (30 meters, 300 bulbs) wrap seamlessly around a Christmas tree, window frames, and staircase—no visible wires. The lights softly fade in and out (“slow fade” mode). A parent’s hand taps the controller placed safely on an indoor side table to switch to “twinkle.” A child gazes up, smiling. On-screen bold Portuguese text: “Ilumine seu Natal com 8 modos mágicos! ✨”. Natural pauses for voiceover. Golden ambient lighting, vertical 9:16.