body{margin:0;font-family:Inter,Arial,sans-serif;background:radial-gradient(circle at top,#45392f,#171412 68%);min-height:100vh;display:grid;place-items:center;color:#18202a}
.login{width:min(420px,calc(100% - 32px));background:#fff;border-radius:24px;padding:30px;box-shadow:0 30px 80px rgba(0,0,0,.28)}
.mark{width:64px;height:64px;border-radius:20px;background:linear-gradient(145deg,#f1dfbd,#b58950);display:grid;place-items:center;font-size:31px;margin-bottom:20px}
h1{margin:0 0 8px;font-size:30px}.muted{color:#77808c;font-size:13px;margin-bottom:22px}
label{display:block;font-size:12px;font-weight:700;margin:12px 0 6px}
input{width:100%;box-sizing:border-box;padding:12px;border:1px solid #ddd;border-radius:12px;font:inherit}
button{width:100%;margin-top:18px;border:0;border-radius:12px;padding:13px;background:linear-gradient(135deg,#171412,#2f2923);color:#fff;font-weight:800;cursor:pointer}
.err{background:#fee2e2;color:#991b1b;border-radius:10px;padding:10px 12px;font-size:12px;margin-bottom:12px}.hint{font-size:11px;color:#8b8b96;margin-top:15px}