/* 全局样式重置 */
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: "Microsoft YaHei", "PingFang SC", sans-serif;
        }

        /* 全局变量定义 */
        :root {
            --primary: #165DFF;
            --primary-light: #4080FF;
            --primary-hover: #0E42C7;
            --text-main: #1E293B;
            --text-secondary: #475569;
            --text-light: #94A3B8;
            --bg-white: #FFFFFF;
            --bg-gray: #F8FAFC;
            --bg-card: #F1F5F9;
            --bg-footer: #0F172A; /* 页脚主背景色 */
            --bg-footer-light: #1E293B; /* 页脚次要背景色 */
            --shadow-sm: 0 4px 12px rgba(0,0,0,0.05);
            --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
            --radius-sm: 8px;
            --radius-md: 12px;
            --radius-lg: 16px;
            --transition: all 0.3s ease;
        }

        body {
            color: var(--text-main);
            background-color: var(--bg-gray);
            line-height: 1.7;
            
        }/* 底部模板样式 */
        .footer {
            background-color: var(--bg-footer);
            color: white;
            padding: 80px 0 30px;
            margin-top: 60px;
        }

        .footer-content {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }

        .footer-logo {
            font-size: 28px;
            font-weight: 800;
            color: white;
            text-decoration: none;
            letter-spacing: 2px;
        }

        .footer-desc {
            color: var(--text-light);
            line-height: 1.7;
            font-size: 14px;
        }

        .social-links {
            display: flex;
            gap: 16px;
            margin-top: 10px;
        }

        .social-link {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background-color: var(--bg-footer-light);
            color: white;
            text-decoration: none;
            transition: var(--transition);
        }

        .social-link:hover {
            background-color: var(--primary);
            transform: translateY(-3px);
        }

        .footer-nav-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }

        .footer-nav-title::after {
            content: "";
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background-color: var(--primary);
            border-radius: 2px;
        }

        .footer-nav-list {
            list-style: none;
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .footer-nav-link {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .footer-nav-link i {
            font-size: 12px;
            color: var(--primary);
            opacity: 0;
            transition: var(--transition);
        }

        .footer-nav-link:hover {
            color: white;
            padding-left: 8px;
        }

        .footer-nav-link:hover i {
            opacity: 1;
        }

        .contact-item {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 16px;
        }

        .contact-icon {
            color: var(--primary);
            font-size: 18px;
            margin-top: 2px;
        }

        .contact-content {
            color: var(--text-light);
            font-size: 14px;
            line-height: 1.6;
        }

        .contact-content strong {
            color: white;
            display: block;
            margin-bottom: 4px;
        }

        .subscribe-form {
            display: flex;
            margin-top: 16px;
            gap: 8px;
        }

        .subscribe-input {
            flex: 1;
            padding: 12px 16px;
            background-color: var(--bg-footer-light);
            border: 1px solid rgba(255, 255, 255, 0.1);
            border-radius: var(--radius-sm);
            color: white;
            outline: none;
            font-size: 14px;
        }

        .subscribe-input::placeholder {
            color: var(--text-light);
        }

        .subscribe-btn {
            padding: 12px 20px;
            background-color: var(--primary);
            border: none;
            border-radius: var(--radius-sm);
            color: white;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }

        .subscribe-btn:hover {
            background-color: var(--primary-hover);
        }

        .footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            padding: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 16px;
        }

        .copyright {
            color: var(--text-light);
            font-size: 14px;
        }

        .footer-policy {
            display: flex;
            gap: 20px;
        }

        .policy-link {
            color: var(--text-light);
            text-decoration: none;
            font-size: 14px;
            transition: var(--transition);
        }

        .policy-link:hover {
            color: white;
        }

        /* 响应式适配 */
        @media (max-width: 768px) {
            .product-banner {
                padding: 40px 0;
            }

            .product-title {
                font-size: 28px;
            }

            .product-subtitle {
                font-size: 16px;
            }

            .section-title {
                font-size: 24px;
            }

            .advantages-grid {
                grid-template-columns: 1fr;
            }

            .feature-item {
                flex-direction: column;
                gap: 16px;
            }

            .feature-icon {
                align-self: center;
            }

            .cases-grid {
                grid-template-columns: 1fr;
            }

            .product-actions {
                flex-direction: column;
                align-items: center;
                gap: 15px;
            }

            .product-btn {
                width: 80%;
                justify-content: center;
            }

            .footer {
                padding: 60px 0 20px;
            }

            .footer-content {
                gap: 30px;
            }

            .subscribe-form {
                flex-direction: column;
            }

            .footer-bottom {
                flex-direction: column;
                text-align: center;
            }

            .footer-policy {
                justify-content: center;
            }
        }

        @media (max-width: 480px) {
            .product-title {
                font-size: 24px;
            }

            .advantage-card {
                padding: 24px;
            }

            .product-btn {
                width: 100%;
                padding: 12px 20px;
            }

            .links-list {
                flex-direction: column;
                gap: 15px;
                align-items: center;
            }

            .footer {
                padding: 40px 0 15px;
            }

            .footer-logo {
                font-size: 24px;
            }

            .footer-nav-title {
                font-size: 16px;
            }
        }