.callback-card {
            max-width: 750px;
            width: 100%;
            max-height: 450px;
            background: #ffffff;
            border: 1px solid #dce3e9;
            box-shadow: 0 2px 6px rgba(0, 0, 0, 0.04);
            border-radius: 10px;
            flex: 3;
            border-top: 5px solid #1e2f3e;
        }


        .form-container {
            padding: 28px 30px 32px;
        }

        /* строгий заголовок */
        .form-title {
            font-size: 1.5rem;
            font-weight: 600;
            color: #1a2c3e;
            line-height: 1.35;
            margin-bottom: 10px;
            letter-spacing: -0.2px;
        }

        .form-title span {
            background: none;
            font-weight: 700;
            color: #c23d2c;
        }

        .form-subtext {
            font-size: 0.9rem;
            color: #4a627a;
            margin-bottom: 24px;
            padding-bottom: 8px;
            border-bottom: 1px solid #e6edf2;
        }

        /* строгие поля */
        .input-group {
            margin-bottom: 22px;
        }

        .input-label {
            display: block;
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
            color: #2c4b6e;
            margin-bottom: 8px;
        }

        .phone-field {
            display: flex;
            align-items: center;
            border: 1px solid #cbdbe0;
            background: #ffffff;
            transition: 0.15s ease;
        }

        .phone-field:focus-within {
            border-color: #1e2f3e;
            outline: none;
        }

        .country-code {
            font-size: 0.9rem;
            font-weight: 500;
            color: #1f3a4b;
            background: #f5f7fa;
            padding: 11px 0 11px 14px;
            border-right: 1px solid #e2e8f0;
        }

        .phone-field input {
            flex: 1;
            border: none;
            background: transparent;
            padding: 11px 14px;
            font-size: 0.9rem;
            font-family: monospace;
            font-weight: 500;
            color: #11181c;
            outline: none;
        }

        .phone-field input::placeholder {
            color: #9aaebf;
            font-family: monospace;
            font-weight: 400;
        }

        /* строгая кнопка — без градиентов */
        .btn-submit {
            width: 100%;
            background: #054674;
            color: white;
            border: none;
            padding: 12px 16px;
            font-size: 0.95rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.8px;
            cursor: pointer;
            transition: 0.1s linear;
            margin-top: 8px;
            border-radius: 25px;
            font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif
        }

        .btn-submit:hover {
            background: #0056b3;
            transform: scale(0.97);
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
        }

        .btn-submit:active {
            transform: translateY(1px);
        }

        .btn-submit:disabled {
            background: #8b9aab;
            cursor: not-allowed;
            opacity: 0.7;
        }

        /* гарантия — строгая, серая */
        .guarantee {
            margin-top: 20px;
            font-size: 0.7rem;
            color: #6c7e91;
            text-align: center;
            border-top: 1px solid #eef2f6;
            padding-top: 18px;
            font-weight: 450;
        }

        /* сообщения */
        .form-message {
            margin-top: 18px;
            padding: 10px 12px;
            font-size: 0.8rem;
            font-weight: 500;
            display: none;
            border-left: 3px solid;
        }

        .success-message {
            background: #eef6f0;
            color: #1f6e43;
            border-left-color: #2a7f4b;
        }

        .error-message {
            background: #fef3f2;
            color: #bc3f33;
            border-left-color: #bc3f33;
        }

                /* Стили для индикатора загрузки капчи */
        .captcha-loading {
            font-size: 0.7rem;
            color: #6c7e91;
            text-align: center;
            margin-top: 8px;
            display: none;
        }

.about{
   display: flex;  
   gap: 25px;
  margin: 25px 0 55px 0;
  padding: 0 15px 0 15px;  
}

        @media (max-width: 768px) {
            .about{
   
    flex-direction: column; 
}
            .form-container {
                padding: 20px;
            }
            .form-title {
                font-size: 1.3rem;
            }
        }