data:text/html,<html><head><title>แอปเทพ UI</title><style>body{font-family:sans-serif;background:#f9f9f9;color:#111;display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;margin:0}button{font-size:24px;padding:15px 30px;margin:10px;border:none;border-radius:15px;background:#007aff;color:#fff;cursor:pointer;box-shadow:0 8px 15px rgba(0,122,255,0.3)}button:hover{background:#005fcc}h1{margin-bottom:20px}#count{font-size:72px;font-weight:900;margin:20px}</style></head><body><h1>แอปเทพ UI ง่ายๆ</h1><div id="count">0</div><button onclick="document.getElementById('count').innerText=+document.getElementById('count').innerText+1">กดเพิ่ม +1</button></body></html>