*{box-sizing:border-box}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;max-width:760px;margin:0 auto;padding:24px 20px 60px;color:#1d1d1f;line-height:1.6;background:#fff}
header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid #e5e5e5;padding-bottom:12px;margin-bottom:32px}
header a{color:#1d1d1f;text-decoration:none;font-weight:700}
nav a{font-weight:400;margin-left:16px;color:#555}
h1{font-size:2rem;line-height:1.2;margin:.2em 0}
h2{margin-top:2em}
.card{border:1px solid #e0e0e0;border-radius:12px;padding:24px;margin:24px 0}
.price{font-size:1.6rem;font-weight:700}
.btn{display:inline-block;background:#111;color:#fff;padding:12px 22px;border-radius:8px;text-decoration:none;font-weight:600}
.btn:hover{background:#333}
ul.files li{margin:6px 0}
.muted{color:#666;font-size:.92rem}
footer{border-top:1px solid #e5e5e5;margin-top:48px;padding-top:16px;font-size:.9rem;color:#666}
footer a{color:#666}