*{box-sizing:border-box}
body{margin:0;min-height:100svh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at 50% 0%,#16394d,#07121e 68%);color:#f0f8ff;font:17px/1.7 system-ui,sans-serif}
main{width:min(100%,520px);text-align:center;padding:clamp(24px,6vw,48px);background:#0b1b29;border:1px solid #244559;border-radius:30px;box-shadow:0 24px 80px #0005}
.logo{object-fit:contain;filter:drop-shadow(0 5px 18px #21d5f84d)}
h1{margin:0;font-size:clamp(36px,10vw,58px);line-height:1.1;letter-spacing:-.05em}
p,small{color:#bacbd8}
.download{display:inline-flex;align-items:center;justify-content:center;gap:12px;min-height:52px;background:#61e0ff;color:#07121e;border-radius:14px;padding:10px 20px;font-weight:750;text-decoration:none}
.download:hover{background:#a6efff}
.download:focus-visible,summary:focus-visible{outline:3px solid white;outline-offset:4px}
small{display:block;margin-top:12px}
details{margin-top:24px;border-top:1px solid #244559;padding-top:16px}
summary{cursor:pointer}
details p{margin-bottom:0}