/* feedback.css - 保持不变 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Microsoft YaHei', sans-serif;
}

body {
    background-color: #f5f7fa;
    color: #333;
    line-height: 1.6;
    padding: 20px;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background: white;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.1);
    padding: 30px;
}

h1 {
    text-align: center;
    color: #2c3e50;
    margin-bottom: 10px;
    font-size: 28px;
}

.subtitle {
    text-align: center;
    color: #7f8c8d;
    margin-bottom: 30px;
    font-size: 16px;
}

.form-group {
    margin-bottom: 20px;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #2c3e50;
}

select, input, textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
    transition: border 0.3s;
}

select:focus, input:focus, textarea:focus {
    border-color: #3498db;
    outline: none;
}

.verification-group {
    display: flex;
    gap: 10px;
}

.verification-group input {
    flex: 1;
}

.verification-group button {
    padding: 0 15px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background 0.3s;
}

.verification-group button:hover {
    background: #2980b9;
}

.verification-group button:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.captcha-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.captcha-group input {
    flex: 1;
}

.captcha-img {
    height: 40px;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
}

.agreement {
    display: flex;
    align-items: flex-start;
    margin: 25px 0;
    padding: 15px;
    background: #f8f9fa;
    border-radius: 5px;
}

.agreement input {
    width: auto;
    margin-right: 10px;
    margin-top: 3px;
}

.agreement label {
    font-weight: normal;
    margin: 0;
}

.submit-btn {
    display: block;
    width: 100%;
    padding: 15px;
    background: #2ecc71;
    color: white;
    border: none;
    border-radius: 5px;
    font-size: 18px;
    cursor: pointer;
    transition: background 0.3s;
}

.submit-btn:hover {
    background: #27ae60;
}

.submit-btn:disabled {
    background: #95a5a6;
    cursor: not-allowed;
}

.toast {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0, 0, 0, 0.8);
    color: white;
    padding: 15px 25px;
    border-radius: 5px;
    z-index: 1000;
    opacity: 0;
    transition: opacity 0.3s;
}

.toast.show {
    opacity: 1;
}

.message {
    padding: 10px;
    margin: 10px 0;
    border-radius: 5px;
    text-align: center;
}

.success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

@media (max-width: 600px) {
    .container {
        padding: 20px;
    }
    
    h1 {
        font-size: 24px;
    }
    
    .verification-group, .captcha-group {
        flex-direction: column;
    }
    
    .verification-group button {
        padding: 10px;
    }
}