*{box-sizing:border-box}
body{font-family:system-ui,Arial,sans-serif;background:#f2f4f7;margin:0;color:#1d2330}
main{max-width:480px;margin:40px auto;background:#fff;padding:24px;border-radius:8px;box-shadow:0 1px 4px rgba(0,0,0,.12)}
h1{font-size:1.3rem;margin-top:0}h2{font-size:1.05rem;margin-top:28px}
label{display:block;margin:12px 0 4px;font-size:.9rem}
input[type=text],input[type=password],input[type=url]{width:100%;padding:9px;border:1px solid #c5ccd6;border-radius:5px;font-size:1rem}
button,.btn{margin-top:16px;padding:9px 16px;border:0;border-radius:5px;background:#2557d6;color:#fff;font-size:1rem;cursor:pointer}
.msg{padding:9px;border-radius:5px;margin:12px 0}.ok{background:#e1f5e6}.err{background:#fde3e3}
.top{display:flex;justify-content:space-between;align-items:center}.top a{font-size:.9rem}
small{color:#667}