/* 确保页面不会出现意外的水平滚动 */
body {
    overflow-x: hidden;
}

/* 留言弹窗样式 - 与下载中心一致 */
.contact-message {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(15px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    animation: modalBackdropFadeIn 0.4s ease-out;
    padding: 20px;
    box-sizing: border-box;
}
@keyframes modalBackdropFadeIn {
    from {
        opacity: 0;
        backdrop-filter: blur(0px);
    }
    to {
        opacity: 1;
        backdrop-filter: blur(15px);
    }
}
.modal-content {
    background: linear-gradient(145deg, #ffffff 0%, #f8f9fa 50%, #ffffff 100%);
    padding: 0;
    border-radius: 28px;
    max-width: 580px;
    width: 100%;
    max-height: 90vh;
    position: relative;
    animation: modalSlideIn 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
    box-shadow:
        0 32px 100px rgba(0, 0, 0, 0.2),
        0 8px 32px rgba(0, 0, 0, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.3);
    overflow: hidden;
    transform: translateZ(0);
    margin: auto;
    display: flex;
    flex-direction: column; /* 使用flex布局 */
}
@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-40px) scale(0.9) translateZ(0);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1) translateZ(0);
    }
}
.modal-content h3 {
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    margin: 0;
    padding: 30px 35px 25px;
    font-size: 1.8rem;
    font-weight: 700;
    text-align: center;
    position: relative;
    font-family: '思源黑体', 'Source Han Sans', sans-serif;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.2);
    letter-spacing: 1px;
}
.modal-content h3::before {
    content: '💬';
    display: block;
    font-size: 3rem;
    margin-bottom: 12px;
    animation: bounce 2.5s infinite;
    filter: drop-shadow(0 2px 8px rgba(0, 0, 0, 0.2));
}
@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateY(0) scale(1);
    }
    40% {
        transform: translateY(-12px) scale(1.1);
    }
    60% {
        transform: translateY(-6px) scale(1.05);
    }
}
.close-modal {
    position: absolute;
    top: 25px;
    right: 30px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.4);
    border-radius: 50%;
    color: white;
    font-size: 28px;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(10px);
    font-weight: 300;
    line-height: 1;
    z-index: 10;
}
.close-modal:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: rotate(90deg) scale(1.1);
    border-color: rgba(255, 255, 255, 0.6);
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
    color: #e74c3c;
}
.close-modal:active {
    transform: rotate(90deg) scale(0.95);
}
.message-form {
    padding: 35px 35px 35px;
    margin: 0;
    background: white;
    overflow-y: auto; /* 添加滚动功能 */
    flex: 1; /* 占用剩余空间 */
    min-height: 0; /* 允许收缩 */
}
.form-row {
    display: flex;
    gap: 12px;
    margin-bottom: 15px;
    align-items: center;
}
.form-row .form-group {
    flex: 1;
}
.form-group {
    margin-bottom: 20px;
}
.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 18px;
    border: 2px solid #e2e8f0;
    border-radius: 10px;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    background: #fafbfc;
    box-sizing: border-box;
    font-family: '思源黑体', 'Source Han Sans', sans-serif;
    color: #2d3748;
    font-weight: 500;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 
        0 0 0 4px rgba(52, 152, 219, 0.1),
        0 4px 20px rgba(52, 152, 219, 0.15);
    transform: translateY(-3px);
    background: white;
}
.form-group textarea {
    height: 70px;
    resize: vertical;
    line-height: 1.6;
    min-height: 70px;
}
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #a0aec0;
    font-weight: 400;
    opacity: 0.8;
}
.submit-btn {
    width: 100%;
    padding: 12px 22px;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    margin-top: 35px;
    font-family: '思源黑体', 'Source Han Sans', sans-serif;
    position: relative;
    overflow: hidden;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    letter-spacing: 0.5px;
}
.submit-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
    transition: left 0.7s cubic-bezier(0.4, 0, 0.2, 1);
}
.submit-btn:hover::before {
    left: 100%;
}
.submit-btn:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 12px 40px rgba(52, 152, 219, 0.4),
        0 4px 20px rgba(41, 128, 185, 0.3);
    background: linear-gradient(135deg, #2980b9 0%, #1f5f8b 100%);
}
.submit-btn:active {
    transform: translateY(-2px);
    box-shadow: 
        0 8px 25px rgba(52, 152, 219, 0.3),
        0 2px 10px rgba(41, 128, 185, 0.2);
}
@media (max-width: 768px) {
    .contact-message {
        padding: 10px;
        align-items: center; /* 恢复居中对齐 */
        padding-top: 40px; /* 适当的顶部空间 */
        padding-bottom: 40px; /* 添加底部空间 */
    }
    .modal-content {
        width: 100%;
        max-height: 75vh; /* 更激进地减少高度 */
        border-radius: 18px;
        margin: 0; /* 移除边距，让居中对齐生效 */
    }
    .modal-content h3 {
        padding: 20px 20px 15px; /* 减少padding */
        font-size: 1.4rem; /* 减小字体 */
    }
    .modal-content h3::before {
        font-size: 1.8rem; /* 减小emoji */
        margin-bottom: 6px;
    }
    .message-form {
        padding: 20px 20px 20px; /* 减少padding */
    }
    .form-row {
        flex-direction: column;
        gap: 8px; /* 减少间距 */
    }
    .form-group {
        margin-bottom: 8px; /* 减少间距 */
    }
    .form-group input,
    .form-group textarea {
        padding: 10px 14px; /* 减少padding */
        font-size: 16px; /* 防止iOS缩放 */
    }
    .form-group textarea {
        height: 45px; /* 减少高度 */
        min-height: 45px;
    }
    .submit-btn {
        margin-top: 12px; /* 减少顶部边距 */
        padding: 12px 18px; /* 减少padding */
        font-size: 0.95rem;
    }
    .close-modal {
        top: 18px;
        right: 22px;
        width: 40px;
        height: 40px;
        font-size: 20px;
    }
}
@media (max-width: 480px) {
    .contact-message {
        padding: 8px;
        padding-top: 30px; /* 适当的顶部空间 */
        padding-bottom: 30px; /* 添加底部空间 */
    }
    .modal-content {
        border-radius: 14px;
        max-height: 70vh; /* 更激进地减少高度 */
        margin: 0; /* 移除边距，让居中对齐生效 */
    }
    .modal-content h3 {
        padding: 15px 15px 12px; /* 进一步减少padding */
        font-size: 1.2rem; /* 进一步减小字体 */
    }
    .modal-content h3::before {
        font-size: 1.5rem; /* 进一步减小emoji */
        margin-bottom: 4px;
    }
    .message-form {
        padding: 15px 15px 15px; /* 进一步减少padding */
    }
    .form-group {
        margin-bottom: 8px; /* 进一步减少间距 */
    }
    .form-group input,
    .form-group textarea {
        padding: 10px 12px; /* 减少padding */
        font-size: 16px; /* 防止iOS缩放 */
        border-radius: 8px;
    }
    .form-group textarea {
        height: 40px; /* 减少textarea高度 */
        min-height: 40px;
    }
    .submit-btn {
        padding: 10px 16px; /* 减少padding */
        font-size: 0.9rem;
        border-radius: 8px;
        margin-top: 10px; /* 减少顶部边距 */
    }
    .close-modal {
        top: 15px;
        right: 18px;
        width: 35px;
        height: 35px;
        font-size: 18px;
    }
}

/* 超小屏幕设备优化 */
@media (max-width: 360px) {
    .contact-message {
        padding: 5px;
        padding-top: 20px; /* 适当的顶部空间 */
        padding-bottom: 20px; /* 添加底部空间 */
    }
    .modal-content {
        max-height: 65vh; /* 极小高度 */
        border-radius: 10px;
        margin: 0; /* 移除边距，让居中对齐生效 */
    }
    .modal-content h3 {
        padding: 12px 12px 8px; /* 最小padding */
        font-size: 1.1rem; /* 最小字体 */
    }
    .modal-content h3::before {
        font-size: 1.3rem; /* 最小emoji */
        margin-bottom: 2px;
    }
    .message-form {
        padding: 12px 12px 12px; /* 最小padding */
    }
    .form-group {
        margin-bottom: 8px;
    }
    .form-group input,
    .form-group textarea {
        padding: 10px 12px;
        font-size: 16px;
        border-radius: 8px;
    }
    .form-group textarea {
        height: 45px;
        min-height: 45px;
    }
    .submit-btn {
        padding: 10px 16px;
        font-size: 0.9rem;
        border-radius: 8px;
        margin-top: 12px;
    }
    .close-modal {
        top: 12px;
        right: 15px;
        width: 30px;
        height: 30px;
        font-size: 16px;
    }
}

/* 以下为download.css中.sms-btn及验证码输入框样式 */
.sms-btn {
    width: 100%;
    padding: 12px 18px;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    color: white;
    border: none;
    border-radius: 10px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: '思源黑体', 'Source Han Sans', sans-serif;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    box-shadow: 
        0 4px 15px rgba(52, 152, 219, 0.3),
        0 2px 8px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    box-sizing: border-box;
    background-color: #fafbfc;
}

.sms-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(46, 204, 113, 0.3);
    background: linear-gradient(135deg, #2ecc71 0%, #27ae60 100%);
}

.sms-btn:disabled {
    background: #bdc3c7;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.sms-btn:active:not(:disabled) {
    transform: translateY(0);
    box-shadow: 0 2px 10px rgba(46, 204, 113, 0.2);
}

.form-group input[name="sms_code"] {
    font-family: 'Courier New', monospace;
    font-size: 1.1rem;
    text-align: left;
    letter-spacing: 2px;
    font-weight: 600;
    color: #2c3e50;
    width: 200px;
    margin: 0;
    display: block;
    background: #fafbfc;
}

.form-group input[name="sms_code"]::placeholder {
    color: #a0aec0;
    font-weight: 400;
    opacity: 0.8;
}

@media (max-width: 768px) {
    .sms-btn {
        padding: 12px 16px;
        font-size: 13px;
        min-width: 100px;
    }
    .form-group input[name="sms_code"] {
        font-size: 16px;
        letter-spacing: 1px;
    }
}

@media (max-width: 480px) {
    .sms-btn {
        padding: 10px 12px;
        font-size: 12px;
        min-width: 80px;
    }
}