/* 基础样式 */
        :root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --text: #1e293b;
            --text-light: #64748b;
            --light: #f8fafc;
            --border: #e2e8f0;
            --radius: 8px;
            --shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
            --max-width: 1200px;
            --side-padding: 20px;
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }

        body {
            font-family: 'Inter', 'PingFang SC', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: var(--text);
            background-color: var(--light);
        }

        /* 布局样式 */
        .container {
            width: 100%;
            max-width: var(--max-width);
            margin: 0 auto;
            padding: 0 var(--side-padding);
        }

        /* 头部样式 */
        header {
            background-color: white;
            box-shadow: var(--shadow);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .logo {
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }

        /* 主要内容 */
        main {
            padding: 60px 0;
        }

        .privacy-container {
            background-color: white;
            border-radius: var(--radius);
            box-shadow: var(--shadow);
            padding: 40px;
            margin-bottom: 40px;
        }

        h1 {
            font-size: 2.5rem;
            margin-bottom: 30px;
            color: var(--primary);
        }

        h2 {
            font-size: 1.8rem;
            margin: 40px 0 20px;
            color: var(--text);
        }

        h3 {
            font-size: 1.4rem;
            margin: 30px 0 15px;
            color: var(--text);
        }

        p {
            margin-bottom: 20px;
            color: var(--text-light);
        }

        ul, ol {
            margin-bottom: 20px;
            padding-left: 20px;
        }

        li {
            margin-bottom: 10px;
            color: var(--text-light);
        }

        a {
            color: var(--primary);
            text-decoration: none;
            transition: color 0.3s;
        }

        a:hover {
            color: var(--primary-dark);
            text-decoration: underline;
        }

        .last-updated {
            font-style: italic;
            margin-bottom: 30px;
            color: var(--text-light);
        }

        /* 页脚 */
        footer {
            background-color: var(--text);
            color: white;
            padding: 40px 0;
        }

        .footer-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 40px;
        }

        .footer-section {
            flex: 1;
            min-width: 250px;
        }

        .footer-section h3 {
            color: white;
            margin-bottom: 20px;
            font-size: 1.2rem;
        }

        .footer-section p, .footer-section a {
            color: rgba(255, 255, 255, 0.7);
            margin-bottom: 15px;
            display: block;
        }

        .footer-section a:hover {
            color: white;
        }

        .copyright {
            text-align: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: rgba(255, 255, 255, 0.5);
            font-size: 0.9rem;
        }

        /* 响应式设计 */
        @media (max-width: 992px) {
            .privacy-container {
                padding: 30px;
            }
            
            h1 {
                font-size: 2.2rem;
            }
            
            h2 {
                font-size: 1.6rem;
            }
        }

        @media (max-width: 768px) {
            .header-container {
                height: 60px;
            }
            
            main {
                padding: 40px 0;
            }
            
            .privacy-container {
                padding: 25px;
            }
            
            h1 {
                font-size: 2rem;
                margin-bottom: 20px;
            }
            
            h2 {
                font-size: 1.4rem;
                margin: 30px 0 15px;
            }
            
            h3 {
                font-size: 1.2rem;
            }
        }

        @media (max-width: 576px) {
            :root {
                --side-padding: 15px;
            }
            
            .privacy-container {
                padding: 20px;
            }
            
            h1 {
                font-size: 1.8rem;
            }
            
            .footer-container {
                flex-direction: column;
                gap: 30px;
            }
        }