*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif; background: #f4f6f9; color: #111827; }

    .site-header {
      background: #fff; border-bottom: 1px solid rgba(0,0,0,.08);
      padding: 0 24px; height: 58px;
      display: flex; align-items: center; justify-content: space-between;
    }
    .site-header__logo img { height: 32px; display: block; }

    .container { max-width: 1000px; margin: 0 auto; padding: 40px 20px; }

    .page-back { color: #6b7280; font-size: 14px; font-weight: 600; text-decoration: none; display: inline-flex; align-items: center; gap: 4px; margin-bottom: 20px; }
    .page-back:hover { color: #0b61ff; }

    .alert { padding: 12px 16px; border-radius: 10px; font-size: 14px; margin-bottom: 20px; }
    .alert--error { background: #fee2e2; color: #991b1b; }
    .alert--info  { background: #eff6ff; color: #1e40af; }

    .card {
      background: #fff; border-radius: 16px; box-shadow: 0 1px 8px rgba(0,0,0,.07);
      padding: 32px;
    }
    .card__title { font-size: 22px; font-weight: 900; margin-bottom: 8px; }
    .card__sub   { font-size: 14px; color: #6b7280; margin-bottom: 28px; line-height: 1.6; }

    .form-group { margin-bottom: 18px; }
    .form-group label { display: block; font-size: 13px; font-weight: 700; color: #374151; margin-bottom: 6px; }
    .form-group label .req { color: #ef4444; }
    .form-control {
      width: 100%; padding: 10px 13px; border: 1.5px solid #d1d5db;
      border-radius: 9px; font-size: 14px; background: #fff; color: #111827;
      transition: border-color .15s;
    }
    .form-control:focus { outline: none; border-color: #0b61ff; box-shadow: 0 0 0 3px rgba(11,97,255,.12); }

    .radio-group { display: flex; flex-direction: column; gap: 10px; margin-top: 4px; }
    .radio-option {
      display: flex; align-items: flex-start; gap: 10px; padding: 12px 14px;
      border: 1.5px solid #e5e7eb; border-radius: 10px; cursor: pointer;
      transition: border-color .15s, background .15s;
    }
    .radio-option:has(input:checked) { border-color: #0b61ff; background: #eff6ff; }
    .radio-option input { margin-top: 2px; flex-shrink: 0; accent-color: #0b61ff; }
    .radio-option .ro-label { font-size: 14px; font-weight: 700; color: #111827; }
    .radio-option .ro-desc  { font-size: 13px; color: #6b7280; margin-top: 2px; }

    .btn-submit {
      width: 100%; padding: 13px; background: #0b61ff; color: #fff;
      font-size: 15px; font-weight: 800; border: none; border-radius: 10px;
      cursor: pointer; margin-top: 8px; transition: background .15s;
    }
    .btn-submit:hover { background: #0950d4; }

    .steps {
      display: flex; gap: 0; margin-bottom: 28px;
      border: 1.5px solid #e5e7eb; border-radius: 10px; overflow: hidden;
    }
    .step { flex: 1; padding: 10px 8px; text-align: center; font-size: 12px; font-weight: 700; color: #9ca3af; background: #fafafa; }
    .step.active { background: #0b61ff; color: #fff; }
    .step + .step { border-left: 1.5px solid #e5e7eb; }