:root{color:#111827;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#f3f6fa;font-family:Avenir Next,Segoe UI,Noto Sans,Helvetica Neue,sans-serif;font-weight:400;line-height:1.5}*{box-sizing:border-box}body{min-width:320px;margin:0}.page{box-sizing:border-box;place-items:center;min-height:100svh;padding:2rem 1.5rem;display:grid}.card{text-align:center;background:#fff;border:1px solid #d8dee8;border-radius:14px;width:min(100%,680px);padding:2.5rem 2rem;box-shadow:0 10px 30px #0f172a14}h1{color:#0f172a;margin:0;font-size:clamp(1.8rem,3vw,2.4rem);line-height:1.2}.message{color:#1f2937;margin:1.1rem 0 2rem;font-size:1.04rem;line-height:1.6}.test-button{color:#fff;cursor:pointer;background:#0f172a;border:none;border-radius:10px;padding:.75rem 1.3rem;font-size:1rem;font-weight:600;transition:transform .15s,background-color .2s,box-shadow .2s}.test-button:hover{background:#1e293b;box-shadow:0 8px 18px #0f172a38}.test-button:active{transform:translateY(1px)}.test-button:focus-visible{outline-offset:3px;outline:3px solid #93c5fd}.footer{color:#475569;margin-top:1.2rem;font-size:.92rem}@media (width<=560px){.card{padding:2rem 1.3rem}}