:root{color-scheme:light;font-family:system-ui,-apple-system,"Noto Sans SC",sans-serif;background:#f3f5f8;color:#172334}
body{margin:0;padding:24px 16px}
main{max-width:560px;margin:6vh auto;background:#fff;border-radius:18px;padding:28px;box-shadow:0 10px 32px #17233412}
h1{font-size:1.55rem;margin:0 0 16px}
p{line-height:1.65}
.download{display:block;box-sizing:border-box;width:100%;margin:20px 0;padding:15px;border-radius:10px;background:#225cbb;color:#fff;font-size:1rem;text-align:center;text-decoration:none}
.hint{font-size:.88rem;color:#576476}