body{font:15px/1.5 system-ui,sans-serif;background:#f4f6f9;margin:0;color:#1f2933}
.card{max-width:360px;margin:10vh auto;padding:28px;background:#fff;border-radius:12px;box-shadow:0 4px 20px rgba(0,0,0,.08)}
h1{font-size:18px;margin:0 0 8px}input,button{display:block;width:100%;box-sizing:border-box;margin:8px 0;padding:10px;border:1px solid #cbd2d9;border-radius:8px}
button{background:#2563eb;color:#fff;border:0;cursor:pointer}