/* 关于页面额外样式 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Microsoft YaHei', Arial, sans-serif;
        }

        body {
            background-color: #f5f5f5;
            color: #333;
            height: 100vh;
            overflow: hidden;
        }

        .container {
            display: flex;
            height: 100vh;
            width: 100%;
            margin-top: 64px;
            overflow-y: auto;
        }

        /* ========== 顶部导航栏样式 ========== */
        .top-header {
            background: linear-gradient(135deg, #1a6dcc 0%, #0d4d9c 100%);
            color: white;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            z-index: 2000;
            width: 100%;
            height: 64px;
        }

        .navbar {
            width: 100%;
            height: 100%;
            padding: 0 24px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .nav-brand {
            display: flex;
            align-items: center;
            gap: 12px;
            flex-shrink: 0;
        }

        .nav-brand img {
            height: 42px;
            width: auto;
            filter: drop-shadow(0 2px 4px rgba(0,0,0,0.2));
        }

        .brand-text {
            display: flex;
            flex-direction: column;
        }

        .brand-title {
            font-size: 22px;
            font-weight: bold;
            letter-spacing: 1px;
            line-height: 1.2;
        }

        .brand-subtitle {
            font-size: 11px;
            opacity: 0.85;
            letter-spacing: 0.5px;
        }

        .nav-menu {
            display: flex;
            list-style: none;
            gap: 8px;
            margin: 0;
            padding: 0;
            height: 100%;
            align-items: center;
        }

        .nav-item {
            height: 100%;
            display: flex;
            align-items: center;
        }

        .nav-link {
            display: flex;
            align-items: center;
            justify-content: center;
            height: 100%;
            text-decoration: none;
            color: white;
            font-weight: 500;
            padding: 0 18px;
            transition: all 0.3s ease;
            border-radius: 6px;
            font-size: 15px;
            white-space: nowrap;
            gap: 8px;
        }

        .nav-link i {
            font-size: 18px;
        }

        .nav-link:hover {
            background-color: rgba(255, 255, 255, 0.15);
            transform: translateY(-2px);
        }

        .nav-link.active {
            background-color: rgba(255, 255, 255, 0.25);
            font-weight: 600;
        }

        /* 侧边栏切换按钮 */
        .sidebar-toggle-btn {
            position: fixed;
            top: 80px;
            left: 20px;
            z-index: 1001;
            width: 40px;
            height: 40px;
            background-color: white;
            border: none;
            border-radius: 5px;
            box-shadow: 0 2px 5px rgba(0,0,0,0.2);
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            font-size: 20px;
            color: #333;
            transition: all 0.2s;
        }

        .sidebar-toggle-btn:hover {
            background-color: #f5f5f5;
            transform: translateY(-2px);
        }

        /* 底部备案信息 */
        .footer {
            width: 100%;
            background: rgba(245, 245, 245, 0.88);
            backdrop-filter: blur(4px);
            text-align: right;
            padding: 6px 12px;
            font-size: 10px;
            color: #666;
            position: fixed;
            bottom: 0;
            left: 0;
            z-index: 998;
            box-sizing: border-box;
            border-top: 1px solid rgba(224, 224, 224, 0.6);
        }

        .footer a {
            color: #666;
            text-decoration: none;
            margin: 0 4px;
        }

        .footer a:hover {
            color: #1a6dcc;
            text-decoration: underline;
        }

        /* 关于页面容器 */
        .about-wrapper {
            width: 100%;
            overflow-y: auto;
            padding: 20px;
        }

        .about-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px 24px 60px;
        }

        .about-header {
            text-align: center;
            margin-bottom: 50px;
        }

        .about-header h1 {
            font-size: 36px;
            color: #1a6dcc;
            margin-bottom: 15px;
        }

        .about-header p {
            font-size: 16px;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        .about-content {
            display: flex;
            flex-wrap: wrap;
            gap: 40px;
            justify-content: center;
        }

        .about-card {
            background: white;
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.08);
            padding: 30px;
            flex: 1;
            min-width: 280px;
            transition: transform 0.3s, box-shadow 0.3s;
        }

        .about-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.12);
        }

        .card-icon {
            font-size: 48px;
            color: #1a6dcc;
            margin-bottom: 20px;
        }

        .about-card h3 {
            font-size: 22px;
            color: #333;
            margin-bottom: 15px;
        }

        .about-card p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
            margin-bottom: 10px;
        }

        /* 团队介绍 */
        .team-section {
            margin-top: 60px;
            text-align: center;
        }

        .team-section h2 {
            font-size: 28px;
            color: #333;
            margin-bottom: 40px;
            position: relative;
            display: inline-block;
        }

        .team-section h2:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 3px;
            background: linear-gradient(135deg, #1a6dcc 0%, #0d4d9c 100%);
            border-radius: 2px;
        }

        .team-grid {
            display: flex;
            flex-wrap: wrap;
            gap: 30px;
            justify-content: center;
            margin-top: 30px;
        }

        .team-member {
            background: white;
            border-radius: 12px;
            padding: 25px;
            text-align: center;
            width: 200px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            transition: transform 0.3s;
        }

        .team-member:hover {
            transform: translateY(-5px);
        }

        .member-avatar {
            width: 100px;
            height: 100px;
            background: linear-gradient(135deg, #1a6dcc 0%, #0d4d9c 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 15px;
            font-size: 40px;
            color: white;
        }

        .team-member h4 {
            font-size: 18px;
            color: #333;
            margin-bottom: 5px;
        }

        .team-member p {
            font-size: 12px;
            color: #888;
        }

        /* 二维码区域 */
        .qrcode-section {
            text-align: center;
            margin-top: 60px;
            padding: 40px;
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            border-radius: 20px;
        }

        .qrcode-section h2 {
            font-size: 28px;
            color: #333;
            margin-bottom: 20px;
        }

        .qrcode-wrapper {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 15px;
        }

        .qrcode-img {
            width: 200px;
            height: 200px;
            background: white;
            border-radius: 16px;
            padding: 10px;
            box-shadow: 0 10px 25px rgba(0,0,0,0.1);
        }

        .qrcode-img img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .qrcode-text {
            font-size: 16px;
            color: #666;
        }

        .qrcode-text .official {
            font-weight: bold;
            color: #1a6dcc;
            font-size: 18px;
            margin-top: 5px;
        }

        /* 联系信息 */
        .contact-info {
            margin-top: 40px;
            text-align: center;
            padding: 30px;
            background: white;
            border-radius: 16px;
        }

        .contact-info p {
            margin: 10px 0;
            color: #666;
        }

        .contact-info i {
            color: #1a6dcc;
            width: 30px;
        }

        .contact-info a {
            color: #1a6dcc;
            text-decoration: none;
        }

        .contact-info a:hover {
            text-decoration: underline;
        }

        /* 响应式 */
        @media (max-width: 768px) {
            .about-container {
                padding: 20px 16px 60px;
            }
            
            .about-header h1 {
                font-size: 28px;
            }
            
            .about-card {
                padding: 20px;
            }
            
            .team-grid {
                gap: 20px;
            }
            
            .team-member {
                width: 160px;
                padding: 20px;
            }
            
            .member-avatar {
                width: 80px;
                height: 80px;
                font-size: 32px;
            }
            
            .qrcode-img {
                width: 160px;
                height: 160px;
            }

            .navbar {
                padding: 0 16px;
            }
            
            .brand-title {
                font-size: 18px;
            }
            
            .brand-subtitle {
                font-size: 9px;
            }
            
            .nav-brand img {
                height: 34px;
            }
            
            .nav-link {
                padding: 0 12px;
                font-size: 13px;
            }
            
            .nav-link span {
                display: none;
            }
            
            .nav-link i {
                font-size: 20px;
                margin: 0;
            }
            
            .container {
                margin-top: 56px;
            }
            
            .top-header {
                height: 56px;
            }

            .sidebar-toggle-btn {
                top: 70px;
            }
        }

        @media (max-width: 480px) {
            .team-member {
                width: 140px;
            }
            
            .member-avatar {
                width: 70px;
                height: 70px;
                font-size: 28px;
            }

            .brand-title {
                font-size: 14px;
            }
            
            .brand-subtitle {
                display: none;
            }
            
            .nav-brand img {
                height: 28px;
            }
            
            .nav-link {
                padding: 0 10px;
            }

            .sidebar-toggle-btn {
                top: 66px;
            }
            
        }