/* 全局样式重置 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 基础样式 */
body {
    font-family: Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f5f5f5;
}

/* 容器样式 */
.container {
    max-width: 1000px;
    margin: 0 auto;
    padding: 20px;
    background-color: white;
    min-height: 100vh;
    margin-top: 100px;
}

/* 固定头部样式 */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: white;
    border-bottom: 1px solid #eee;
    padding: 15px 30px;
    z-index: 1000;
}

/* 平台标题样式 */
.platform-title {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    max-width: 1000px;
    margin: 0 auto;
}

.logo-image {
    width: 32px;
    height: 32px;
    margin-right: 12px;
}

.platform-title span {
    font-size: 16px;
    font-weight: 500;
    color: #333;
}

/* 标题样式 */
h1 {
    font-size: 26px;
    font-weight: 500;
    margin: 30px;
    text-align: center;
}

/* 内容区域样式 */
.content {
    font-size: 14px;
    line-height: 1.8;
}

.content h2 {
    font-size: 18px;
    font-weight: 500;
    margin: 30px 0 15px;
}

.content h3 {
    font-size: 16px;
    font-weight: 500;
    margin: 20px 0 10px;
}

.content p {
    margin-bottom: 15px;
}

.content ul {
    margin-bottom: 15px;
    padding-left: 20px;
}

.content li {
    margin-bottom: 8px;
}

/* 更新信息样式 */
.update-info {
    font-size: 14px;
    color: #999;
    margin-bottom: 30px;
    padding-bottom: 15px;
    border-bottom: 1px solid #eee;
}

/* 联系信息样式 */
.contact-info {
    margin-bottom: 40px;
}

.contact-item {
    margin-bottom: 20px;
    display: flex;
    align-items: flex-start;
}

.contact-label {
    width: 100px;
    font-weight: 500;
}

.contact-value {
    flex: 1;
}

/* 表单样式 */
.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.form-group textarea {
    resize: vertical;
    min-height: 150px;
}

.submit-btn {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 10px 30px;
    border: none;
    border-radius: 4px;
    font-size: 16px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-btn:hover {
    background-color: #45a049;
}

/* 支持渠道样式 */
.support-channels {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 40px;
}

.support-channel {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    text-align: center;
}

.support-channel h3 {
    margin-bottom: 15px;
    color: #4CAF50;
}

/* FAQ样式 */
.faq {
    margin-top: 40px;
}

.faq-item {
    margin-bottom: 20px;
    border-bottom: 1px solid #eee;
    padding-bottom: 20px;
}

.faq-question {
    font-weight: 500;
    margin-bottom: 10px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-answer {
    display: none;
    margin-top: 10px;
}

.faq-answer.active {
    display: block;
}

.toggle-icon {
    font-size: 12px;
    transition: transform 0.3s ease;
}

.toggle-icon.active {
    transform: rotate(180deg);
}

/* 页脚样式 */
footer {
    margin-top: 50px;
    padding-top: 20px;
    border-top: 1px solid #eee;
    font-size: 12px;
    color: #999;
    text-align: center;
}

.footer-links {
    margin-bottom: 10px;
}

.footer-links a {
    color: #999;
    text-decoration: none;
    margin: 0 8px;
}

.footer-links a:hover {
    color: #333;
}

/* 登录超时页面样式 */
.login-container {
    text-align: center;
    padding: 0 20px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: #ffffff;
}

.login-platform-title {
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 30px;
    font-size: 14px;
    color: #333;
}

.login-platform-title .logo-image {
    width: 18px;
    height: 18px;
    margin-right: 8px;
}

.error-title {
    font-size: 20px;
    font-weight: 500;
    margin-bottom: 40px;
    color: #333;
    letter-spacing: 1px;
}

.illustration {
    margin-bottom: 50px;
}

.illustration img {
    width: 120px;
    height: auto;
}

.login-button {
    display: inline-block;
    background-color: #4CAF50;
    color: white;
    padding: 10px 30px;
    border-radius: 20px;
    text-decoration: none;
    font-size: 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.login-button:hover {
    background-color: #45a049;
}

.login-footer {
    position: absolute;
    bottom: 20px;
    width: 100%;
    text-align: center;
    font-size: 12px;
    color: #999;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 15px;
        padding-top: 90px;
    }
    
    header {
        padding: 12px 20px;
    }
    
    .platform-title {
        font-size: 14px;
    }
    
    .logo-image {
        width: 28px;
        height: 28px;
        margin-right: 10px;
    }
    
    .platform-title span {
        font-size: 14px;
    }
    
    h1 {
        font-size: 20px;
    }
    
    .content h2 {
        font-size: 16px;
    }
    
    .content h3 {
        font-size: 14px;
    }
    
    .support-channels {
        grid-template-columns: 1fr;
    }
    
    .contact-item {
        flex-direction: column;
    }
    
    .contact-label {
        width: 100%;
        margin-bottom: 5px;
    }
}