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

        html, body {
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
            color: #333;
            line-height: 1.6;
        }

        /* 导航栏样式 */
        .xcw5-navbar-wrapper {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .xcw5-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .xcw5-logo-section {
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .xcw5-logo-img {
            height: 45px;
            width: auto;
        }

        .xcw5-logo-text {
            color: white;
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .xcw5-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .xcw5-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: opacity 0.3s ease, color 0.3s ease;
            display: inline-block;
        }

        .xcw5-nav-link:hover {
            opacity: 0.8;
            color: #e0f0ff;
        }

        /* 主容器 */
        .xcw5-main-content {
            flex: 1;
            max-width: 1200px;
            margin: 0 auto;
            padding: 40px 20px;
            width: 100%;
        }

        /* 英雄区域 */
        .xcw5-hero-section {
            text-align: center;
            margin-bottom: 60px;
            padding: 40px 20px;
            background: linear-gradient(135deg, #f5f7fa 0%, #ffffff 100%);
            border-radius: 12px;
            border-top: 4px solid #0088cc;
        }

        .xcw5-hero-heading {
            font-size: 48px;
            color: #0088cc;
            margin-bottom: 20px;
            font-weight: 700;
            letter-spacing: 1px;
        }

        .xcw5-hero-subtitle {
            font-size: 20px;
            color: #666;
            margin-bottom: 30px;
            line-height: 1.8;
        }

        /* 下载按钮组 */
        .xcw5-download-buttons {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin: 40px 0;
            margin-bottom: 50px;
        }

        .xcw5-download-card {
            background: white;
            border: 2px solid #e0e0e0;
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: all 0.3s ease;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .xcw5-download-card:hover {
            border-color: #0088cc;
            box-shadow: 0 8px 24px rgba(0, 136, 204, 0.15);
            transform: translateY(-5px);
        }

        .xcw5-platform-icon {
            font-size: 48px;
            margin-bottom: 15px;
            display: block;
        }

        .xcw5-platform-name {
            font-size: 18px;
            font-weight: 600;
            color: #333;
            margin-bottom: 10px;
        }

        .xcw5-platform-version {
            font-size: 13px;
            color: #999;
            margin-bottom: 15px;
        }

        .xcw5-btn-download {
            background: linear-gradient(135deg, #0088cc 0%, #0077b6 100%);
            color: white;
            padding: 14px 32px;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-decoration: none;
            margin-bottom: 12px;
            width: 100%;
        }

        .xcw5-btn-download:hover {
            background: linear-gradient(135deg, #0077b6 0%, #006494 100%);
            box-shadow: 0 4px 12px rgba(0, 136, 204, 0.3);
            transform: scale(1.02);
        }

        .xcw5-btn-download:active {
            transform: scale(0.98);
        }

        .xcw5-file-size {
            font-size: 12px;
            color: #999;
            margin-top: 8px;
        }

        /* 系统要求 */
        .xcw5-requirements-section {
            background: #f9f9f9;
            padding: 40px;
            border-radius: 12px;
            margin-bottom: 40px;
        }

        .xcw5-requirements-title {
            font-size: 24px;
            font-weight: 700;
            color: #0088cc;
            margin-bottom: 25px;
            border-bottom: 3px solid #0088cc;
            padding-bottom: 10px;
        }

        .xcw5-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .xcw5-requirement-item {
            background: white;
            padding: 20px;
            border-radius: 8px;
            border-left: 4px solid #0088cc;
        }

        .xcw5-requirement-label {
            font-weight: 600;
            color: #0088cc;
            margin-bottom: 10px;
            font-size: 14px;
        }

        .xcw5-requirement-text {
            color: #666;
            font-size: 14px;
            line-height: 1.6;
        }

        /* 特性列表 */
        .xcw5-features-section {
            margin-bottom: 40px;
        }

        .xcw5-features-title {
            font-size: 28px;
            font-weight: 700;
            color: #333;
            margin-bottom: 30px;
            text-align: center;
        }

        .xcw5-features-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 20px;
        }

        .xcw5-feature-item {
            display: flex;
            gap: 15px;
            padding: 20px;
            background: white;
            border-radius: 8px;
            border: 1px solid #e0e0e0;
            transition: all 0.3s ease;
        }

        .xcw5-feature-item:hover {
            border-color: #0088cc;
            background: #f0f8ff;
        }

        .xcw5-feature-icon {
            width: 40px;
            height: 40px;
            background: #0088cc;
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            flex-shrink: 0;
        }

        .xcw5-feature-text {
            flex: 1;
        }

        .xcw5-feature-name {
            font-weight: 600;
            color: #333;
            margin-bottom: 5px;
        }

        .xcw5-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.5;
        }

        /* 安全性声明 */
        .xcw5-security-banner {
            background: linear-gradient(135deg, #e8f5e9 0%, #c8e6c9 100%);
            border-left: 4px solid #4caf50;
            padding: 25px;
            border-radius: 8px;
            margin-bottom: 40px;
            text-align: center;
        }

        .xcw5-security-title {
            font-size: 18px;
            font-weight: 700;
            color: #2e7d32;
            margin-bottom: 10px;
        }

        .xcw5-security-text {
            color: #388e3c;
            font-size: 14px;
        }

        /* FAQ部分 */
        .xcw5-faq-section {
            margin-bottom: 40px;
        }

        .xcw5-faq-title {
            font-size: 28px;
            font-weight: 700;
            color: #333;
            margin-bottom: 30px;
            text-align: center;
        }

        .xcw5-faq-item {
            background: white;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            margin-bottom: 15px;
            overflow: hidden;
        }

        .xcw5-faq-question {
            padding: 20px;
            cursor: pointer;
            font-weight: 600;
            color: #333;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: #f5f5f5;
            transition: background 0.3s ease;
        }

        .xcw5-faq-question:hover {
            background: #efefef;
        }

        .xcw5-faq-toggle {
            font-size: 20px;
            color: #0088cc;
        }

        .xcw5-faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            background: white;
        }

        .xcw5-faq-answer.active {
            padding: 20px;
            max-height: 500px;
        }

        .xcw5-faq-text {
            color: #666;
            font-size: 14px;
            line-height: 1.6;
            font-weight: 400;
        }

        /* CTA区域 */
        .xcw5-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            color: white;
            padding: 50px 40px;
            border-radius: 12px;
            text-align: center;
            margin-bottom: 40px;
        }

        .xcw5-cta-heading {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .xcw5-cta-text {
            font-size: 16px;
            margin-bottom: 25px;
            opacity: 0.95;
        }

        .xcw5-btn-cta {
            background: white;
            color: #0088cc;
            padding: 16px 40px;
            border: none;
            border-radius: 6px;
            font-size: 18px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            display: inline-block;
            text-decoration: none;
        }

        .xcw5-btn-cta:hover {
            background: #f0f0f0;
            transform: scale(1.05);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        /* 页脚 */
        .xcw5-footer {
            background: #1a1a1a;
            color: #ccc;
            padding: 40px 20px;
            text-align: center;
            border-top: 3px solid #0088cc;
        }

        .xcw5-footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .xcw5-footer-links {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-bottom: 20px;
            flex-wrap: wrap;
        }

        .xcw5-footer-link {
            color: #0088cc;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .xcw5-footer-link:hover {
            color: #00aaff;
        }

        .xcw5-footer-text {
            font-size: 13px;
            color: #999;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .xcw5-hero-heading {
                font-size: 32px;
            }

            .xcw5-hero-subtitle {
                font-size: 16px;
            }

            .xcw5-nav-menu {
                gap: 15px;
            }

            .xcw5-nav-link {
                font-size: 12px;
            }

            .xcw5-download-buttons {
                grid-template-columns: 1fr;
            }

            .xcw5-features-list {
                grid-template-columns: 1fr;
            }

            .xcw5-requirements-grid {
                grid-template-columns: 1fr;
            }

            .xcw5-cta-section {
                padding: 30px 20px;
            }

            .xcw5-cta-heading {
                font-size: 24px;
            }

            .xcw5-requirements-section {
                padding: 25px;
            }

            .xcw5-main-content {
                padding: 20px 15px;
            }
        }

        @media (max-width: 480px) {
            .xcw5-navbar-container {
                height: auto;
                flex-direction: column;
                padding: 15px;
                gap: 15px;
            }

            .xcw5-nav-menu {
                gap: 10px;
                flex-wrap: wrap;
                justify-content: center;
            }

            .xcw5-hero-heading {
                font-size: 24px;
            }

            .xcw5-footer-links {
                gap: 10px;
            }

            .xcw5-btn-download {
                padding: 12px 20px;
                font-size: 14px;
            }
        }

        /* 容器包装 */
        body {
            display: flex;
            flex-direction: column;
        }

        .xcw5-page-wrapper {
            flex: 1;
            display: flex;
            flex-direction: column;
        }