:root{color-scheme:dark;font-family:Arial,'Segoe UI',sans-serif;background:#111;color:#f3f3f3;line-height:1.75}*{box-sizing:border-box}body{margin:0}a{color:#8fc1ff;text-underline-offset:4px}a:focus-visible,summary:focus-visible{outline:2px solid #71b1ff;outline-offset:5px}header,body>nav,main,footer{max-width:900px;margin:auto;padding:24px}header{display:flex;justify-content:space-between;align-items:center;gap:20px}.logo{width:160px;height:48px;overflow:hidden;position:relative;display:block}.logo img{position:absolute;width:213px;max-width:none;left:-27px;top:-10px}.app-link{display:inline-block;background:#2985ff;color:white;padding:9px 16px;text-decoration:none;border-radius:8px;font-size:14px}nav{display:flex;flex-wrap:wrap;gap:12px 24px}nav a{font-size:14px;text-decoration:none;color:#aaa}nav a[aria-current]{color:#8fc1ff}body>nav{border-bottom:1px solid #292929;padding-top:8px;padding-bottom:20px}main{max-width:760px;padding-top:46px;padding-bottom:50px}h1{font-size:clamp(30px,5vw,44px);line-height:1.15;letter-spacing:-1.2px;margin:0 0 22px}h2{font-size:21px;line-height:1.4;margin:34px 0 12px}p{color:#bebebe;margin:0 0 18px;font-size:16px}.intro{font-size:18px;color:#ddd;margin-bottom:35px}.cta{background:#1c1c1c;padding:24px;border-radius:12px;margin-top:42px}.cta h2{margin:0 0 18px}details{padding:18px 0;border-bottom:1px solid #333}summary{cursor:pointer;font-size:17px;color:#eee}details p{margin:15px 0 0}footer{border-top:1px solid #292929;color:#aaa;font-size:14px}footer nav{margin-top:18px}@media(max-width:450px){header,body>nav,main,footer{padding-left:20px;padding-right:20px}header{padding-top:18px}.logo{width:138px}.logo img{width:190px;left:-25px;top:-8px}.app-link{padding:9px 12px}body>nav{gap:10px 20px}main{padding-top:32px}}