/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333333;
            background-color: #f5f7fa;
        }
        
        /* 顶部导航栏 */
        .header {
            background-color: #ffffff;
            border-bottom: 1px solid #e9ecef;
            padding: 10px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            max-width: 1400px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .logo {
            font-size: 22px;
            font-weight: bold;
            color: #333333;
            text-decoration: none;
            display: flex;
            align-items: center;
        }
        
        .logo img {
            width: 30px;
            height: 30px;
            margin-right: 8px;
            background-color: #1890ff;
            border-radius: 4px;
        }
        
        .nav-links {
            display: flex;
            gap: 20px;
            margin: 0 20px;
        }
        
        .nav-links a {
            color: #333333;
            text-decoration: none;
            font-size: 14px;
            padding: 5px 0;
        }
        
        .nav-links a:hover {
            color: #1890ff;
        }
        
        .nav-links .active {
            color: #1890ff;
            font-weight: 500;
        }
        
        .search-login {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .search-box {
            display: flex;
            align-items: center;
            background-color: #f0f2f5;
            border-radius: 4px;
            padding: 0 12px;
            height: 32px;
        }
        
        .search-box input {
            border: none;
            background: transparent;
            outline: none;
            font-size: 14px;
            width: 180px;
        }
        
        .search-box button {
            background: transparent;
            border: none;
            cursor: pointer;
            color: #999999;
        }
        
        .login-btn, .register-btn {
            padding: 5px 15px;
            font-size: 14px;
            border-radius: 4px;
            cursor: pointer;
            transition: all 0.3s ease;
        }
        
        .login-btn {
            background-color: transparent;
            border: 1px solid #d9d9d9;
            color: #333333;
        }
        
        .login-btn:hover {
            border-color: #1890ff;
            color: #1890ff;
        }
        
        .register-btn {
            background-color: #1890ff;
            border: none;
            color: #ffffff;
        }
        
        .register-btn:hover {
            background-color: #40a9ff;
        }
        
        /* 主内容区域 */
        .main-container {
            max-width: 1400px;
            margin: 20px auto;
            padding: 0 20px;
            display: flex;
            gap: 20px;
        }
        
        /* 左侧边栏 */
        .sidebar-left {
            width: 200px;
            background-color: #ffffff;
            border-radius: 8px;
            padding: 20px;
            height: fit-content;
            position: sticky;
            top: 80px;
        }
        
        .sidebar-section {
            margin-bottom: 25px;
        }
        
        .sidebar-section h3 {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 12px;
            color: #333333;
        }
        
        .sidebar-list {
            list-style: none;
        }
        
        .sidebar-list li {
            margin-bottom: 8px;
        }
        
        .sidebar-list a {
            color: #666666;
            text-decoration: none;
            font-size: 14px;
            display: block;
            padding: 5px 0;
        }
        
        .sidebar-list a:hover {
            color: #1890ff;
        }
        
        .sidebar-list .create-btn {
            background-color: #1890ff;
            color: #ffffff;
            text-align: center;
            padding: 8px;
            border-radius: 4px;
            margin-top: 10px;
        }
        
        .sidebar-list .create-btn:hover {
            background-color: #40a9ff;
        }
        
        /* 主内容 */
        .content {
            flex: 1;
            background-color: #ffffff;
            border-radius: 8px;
            padding: 20px;
        }
        
        .content-header {
            margin-bottom: 20px;
        }
        
        .content-title {
            font-size: 20px;
            font-weight: bold;
            color: #333333;
            margin-bottom: 15px;
        }
        
        .content-tabs {
            display: flex;
            border-bottom: 1px solid #e9ecef;
            margin-bottom: 20px;
        }
        
        .content-tab {
            padding: 8px 16px;
            font-size: 14px;
            color: #666666;
            cursor: pointer;
            border-bottom: 2px solid transparent;
        }
        
        .content-tab:hover {
            color: #1890ff;
        }
        
        .content-tab.active {
            color: #1890ff;
            border-bottom-color: #1890ff;
            font-weight: 500;
        }
        
        /* 帖子内容 */
        .posts-section {
            border: 1px solid #e9ecef;
            border-radius: 8px;
            padding: 20px;
            margin-bottom: 20px;
            text-align: center;
            color: #999999;
        }
        
        .posts-section h3 {
            font-size: 16px;
            margin-bottom: 10px;
            color: #333333;
        }
        
        .posts-section .guest-actions {
            margin-top: 15px;
        }
        
        /* 帖子列表 */
        .post-item {
            border-bottom: 1px solid #f0f0f0;
            padding: 20px 0;
        }
        
        .post-item:last-child {
            border-bottom: none;
        }
        
        .post-header {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
        }
        
        .post-avatar {
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: #f0f2f5;
            margin-right: 12px;
        }
        
        .post-author-info {
            flex: 1;
        }
        
        .post-author {
            font-weight: 500;
            color: #333333;
            font-size: 14px;
        }
        
        .post-level {
            font-size: 12px;
            color: #999999;
            margin-left: 5px;
        }
        
        .post-time {
            font-size: 12px;
            color: #999999;
        }
        
        .post-title {
            font-size: 16px;
            font-weight: 500;
            color: #333333;
            margin-bottom: 8px;
        }
        
        .post-content {
            font-size: 14px;
            color: #666666;
            line-height: 1.8;
            margin-bottom: 12px;
        }
        
        .post-stats {
            display: flex;
            align-items: center;
            gap: 20px;
            font-size: 12px;
            color: #999999;
        }
        
        /* 右侧边栏 */
        .sidebar-right {
            width: 280px;
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .sidebar-card {
            background-color: #ffffff;
            border-radius: 8px;
            padding: 20px;
        }
        
        .sidebar-card h3 {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 15px;
            color: #333333;
        }
        
        .friends-list {
            list-style: none;
        }
        
        .friend-item {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
        }
        
        .friend-avatar {
            width: 32px;
            height: 32px;
            border-radius: 50%;
            background-color: #f0f2f5;
            margin-right: 10px;
        }
        
        .friend-info {
            flex: 1;
        }
        
        .friend-name {
            font-size: 14px;
            color: #333333;
        }
        
        .friend-level {
            font-size: 12px;
            color: #999999;
        }
        
        .signin-button {
            width: 100%;
            background-color: #52c41a;
            color: #ffffff;
            border: none;
            padding: 10px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            margin-top: 10px;
        }
        
        .signin-button:hover {
            background-color: #73d13d;
        }
        
        .secondary-button {
            width: 100%;
            background-color: #ffffff;
            color: #1890ff;
            border: 1px solid #1890ff;
            padding: 8px;
            border-radius: 4px;
            font-size: 14px;
            cursor: pointer;
            margin-top: 8px;
        }
        
        .secondary-button:hover {
            background-color: #e6f7ff;
        }
        
        .miner-price {
            display: flex;
            align-items: center;
            margin-bottom: 12px;
            padding: 10px;
            background-color: #fafafa;
            border-radius: 4px;
        }
        
        .miner-image {
            width: 48px;
            height: 48px;
            background-color: #e9ecef;
            border-radius: 4px;
            margin-right: 12px;
        }
        
        .miner-info h4 {
            font-size: 14px;
            color: #333333;
        }
        
        .miner-price-tag {
            font-size: 14px;
            color: #ff4d4f;
            font-weight: 500;
        }
        
        /* 响应式设计 */
        @media (max-width: 1200px) {
            .sidebar-right {
                display: none;
            }
            
            .sidebar-left {
                width: 180px;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-wrap: wrap;
            }
            
            .nav-links {
                order: 3;
                width: 100%;
                justify-content: center;
                margin-top: 10px;
                gap: 15px;
            }
            
            .main-container {
                flex-direction: column;
            }
            
            .sidebar-left {
                width: 100%;
                position: static;
            }
            
            .search-box input {
                width: 120px;
            }
        }