.feedback-container {
    max-width: 37.5rem;
    margin: 0 auto;
    background: #fff;
    padding: 3rem 0 0;
}

.feedback-content {
    padding: 1.875rem;
    border-radius: 0.75rem;
    box-shadow: 0 0.125rem 0.75rem rgba(0, 0, 0, 0.06);
}

.feedback-title {
    text-align: center;
    font-size: 1.75rem;
    font-weight: 600;
    color: #1d2129;
    margin-bottom: 0.5rem;
}

.feedback-subtitle {
    text-align: center;
    font-size: 1rem;
    color: #4e5969;
    margin-bottom: 2rem;
}

.form-item {
    margin-bottom: 1.25rem;
}

.form-item label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    color: #4e5969;
}

.form-item input,
.form-item textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 0.0625rem solid #c9cdd4;
    border-radius: 0.5rem;
    font-size: 1rem;
    color: #1d2129;
    transition: border-color 0.2s;
}
.form-item textarea {
    resize: none;
}
.form-item input:focus,
.form-item textarea:focus {
    outline: none;
    border-color: #014BB6;
}

.captcha-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.captcha-row input {
    flex: 1;
}

.captcha-img-container {
    border: 0.0625rem solid #e5e6eb;
    border-radius: 0.25rem;
    background: #f2f3f5;
    user-select: none;
    height: 3rem;
    width: 6.25rem;
    overflow: hidden;
}
.captcha-img-container img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}
.submit-btn {
    width: 100%;
    padding: 0.875rem;
    background-color: #014BB6;
    color: #fff;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
}

.submit-btn:hover {
    background-color: #0d47a1;
}

.error-tip {
    color: #f53f3f;
    font-size: 0.75rem;
    margin-top: 0.25rem;
    display: none;
}

/* 遮罩层样式 */
.custom-alert-mask {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
    /* 初始隐藏 */
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
}

/* 弹窗显示时的状态 */
.custom-alert-mask.show {
    opacity: 1;
    visibility: visible;
}

/* 弹窗主体样式 */
.custom-alert-box {
    width: 90%;
    max-width: 25rem;
    background: #fff;
    border-radius: 0.5rem;
    padding: 1.5rem;
    box-shadow: 0 0.25rem 1.25rem rgba(0, 0, 0, 0.15);
    transform: translateY(-1.25rem);
    transition: transform 0.3s ease;
}

.custom-alert-mask.show .custom-alert-box {
    transform: translateY(0);
}

/* 弹窗标题 */
.alert-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: #333;
    margin-bottom: 1rem;
    text-align: center;
}

/* 弹窗内容 */
.alert-content {
    font-size: 1rem;
    color: #000;
    text-align: center;
    margin: 1.5rem 0 0.75rem;
}