* { box-sizing: border-box; }

  body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: Arial, sans-serif;
    background: #f6f7fb;
    padding: 24px;
  }

  .box {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid #e6e6e6;
    border-radius: 16px;
    padding: 18px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.10);
  }

  h2 { margin: 0 0 12px 0; }

  .field {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 12px;
  }

  label { font-size: 12px; color: #444; }

  input {
    width: 100%;
    max-width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    border: 1px solid #d9d9d9;
    outline: none;
    background: #fff;
  }

  input:focus {
    border-color: #9aa7ff;
    box-shadow: 0 0 0 4px rgba(154,167,255,0.25);
  }

  button {
    width: 100%;
    padding: 12px 12px;
    border-radius: 12px;
    border: 1px solid #d9d9d9;
    background: #111;
    color: #fff;
    cursor: pointer;
    margin-top: 14px;
  }

  button:hover { opacity: 0.92; }

  .muted { color:#666; font-size:12px; margin-top:10px; line-height: 1.4; }
  .err { color: #b00020; margin-top: 10px; font-size: 13px; }