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

        html, body {
            height: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        /* 导航栏样式 */
        .xcw5-navbar {
            background: linear-gradient(135deg, #0084ff 0%, #005fcf 100%);
            padding: 0;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .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 {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: white;
            font-weight: bold;
            font-size: 24px;
        }

        .xcw5-logo img {
            height: 40px;
            width: auto;
        }

        .xcw5-nav-links {
            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;
            white-space: nowrap;
        }

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

        /* 响应式导航 */
        .xcw5-mobile-menu {
            display: none;
            background: none;
            border: none;
            color: white;
            font-size: 24px;
            cursor: pointer;
        }

        /* 主容器 */
        .xcw5-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .xcw5-hero {
            background: linear-gradient(135deg, #0084ff 0%, #005fcf 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
        }

        .xcw5-hero-content {
            max-width: 1000px;
            margin: 0 auto;
        }

        .xcw5-hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
            font-weight: 700;
        }

        .xcw5-hero-desc {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.8;
        }

        .xcw5-cta-button {
            display: inline-block;
            background-color: #fff;
            color: #0084ff;
            padding: 15px 45px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
            cursor: pointer;
            border: none;
            margin: 0 10px;
        }

        .xcw5-cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
        }

        .xcw5-cta-secondary {
            background-color: transparent;
            color: white;
            border: 2px solid white;
        }

        .xcw5-cta-secondary:hover {
            background-color: white;
            color: #0084ff;
        }

        /* 主内容区 */
        .xcw5-main-content {
            background: white;
            padding: 60px 20px;
            margin-bottom: 60px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .xcw5-section {
            margin-bottom: 50px;
        }

        .xcw5-section h2 {
            font-size: 32px;
            margin-bottom: 20px;
            color: #0084ff;
            border-bottom: 3px solid #0084ff;
            padding-bottom: 10px;
        }

        .xcw5-section h3 {
            font-size: 22px;
            margin-top: 25px;
            margin-bottom: 15px;
            color: #333;
        }

        .xcw5-section p {
            font-size: 16px;
            line-height: 1.8;
            margin-bottom: 15px;
            color: #555;
        }

        /* 版本特性卡片 */
        .xcw5-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .xcw5-feature-card {
            background: #f8f9fa;
            padding: 25px;
            border-radius: 8px;
            border-left: 4px solid #0084ff;
            transition: all 0.3s ease;
        }

        .xcw5-feature-card:hover {
            box-shadow: 0 4px 12px rgba(0, 132, 255, 0.2);
            transform: translateY(-2px);
        }

        .xcw5-feature-card h4 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #0084ff;
        }

        .xcw5-feature-card p {
            font-size: 14px;
            color: #666;
            margin-bottom: 0;
        }

        /* 更新日志 */
        .xcw5-changelog {
            background: #f8f9fa;
            padding: 20px;
            border-radius: 8px;
            margin-top: 20px;
        }

        .xcw5-changelog-item {
            padding: 15px 0;
            border-bottom: 1px solid #e0e0e0;
        }

        .xcw5-changelog-item:last-child {
            border-bottom: none;
        }

        .xcw5-changelog-version {
            font-weight: 600;
            color: #0084ff;
            font-size: 16px;
            margin-bottom: 8px;
        }

        .xcw5-changelog-desc {
            font-size: 14px;
            color: #666;
            margin-bottom: 5px;
        }

        .xcw5-changelog-list {
            list-style: none;
            margin-left: 20px;
            font-size: 14px;
            color: #555;
        }

        .xcw5-changelog-list li {
            margin-bottom: 5px;
            position: relative;
            padding-left: 20px;
        }

        .xcw5-changelog-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #0084ff;
            font-weight: bold;
        }

        /* 系统要求 */
        .xcw5-requirements {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-top: 25px;
        }

        .xcw5-requirement-box {
            background: linear-gradient(135deg, #f0f4ff 0%, #f5f8ff 100%);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid #e0e8ff;
        }

        .xcw5-requirement-box h4 {
            color: #0084ff;
            margin-bottom: 10px;
            font-size: 16px;
        }

        .xcw5-requirement-box p {
            font-size: 14px;
            color: #555;
            margin-bottom: 0;
        }

        /* 下载区域 */
        .xcw5-download-section {
            background: linear-gradient(135deg, #0084ff 0%, #005fcf 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            border-radius: 8px;
            margin: 60px 0;
        }

        .xcw5-download-section h2 {
            color: white;
            border-bottom: 3px solid white;
            margin-bottom: 30px;
        }

        .xcw5-download-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            flex-wrap: wrap;
            margin-top: 30px;
        }

        .xcw5-download-btn {
            display: inline-block;
            background-color: white;
            color: #0084ff;
            padding: 15px 35px;
            font-size: 16px;
            font-weight: 600;
            border-radius: 8px;
            text-decoration: none;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
            border: none;
            cursor: pointer;
        }

        .xcw5-download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(0, 0, 0, 0.25);
        }

        /* 页脚 */
        .xcw5-footer {
            background: #1a1a1a;
            color: white;
            padding: 40px 20px 20px;
            margin-top: 60px;
        }

        .xcw5-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .xcw5-footer-section h3 {
            font-size: 16px;
            margin-bottom: 15px;
            color: #0084ff;
        }

        .xcw5-footer-section ul {
            list-style: none;
        }

        .xcw5-footer-section a {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            line-height: 2;
            transition: color 0.3s ease;
        }

        .xcw5-footer-section a:hover {
            color: #0084ff;
        }

        .xcw5-footer-bottom {
            max-width: 1200px;
            margin: 0 auto;
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #999;
        }

        /* 安全徽章 */
        .xcw5-trust-badges {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin: 30px 0;
            flex-wrap: wrap;
        }

        .xcw5-badge {
            display: flex;
            flex-direction: column;
            align-items: center;
            gap: 10px;
            font-size: 14px;
            color: #666;
        }

        .xcw5-badge-icon {
            width: 50px;
            height: 50px;
            background: #f0f4ff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
        }

        /* 列表样式 */
        .xcw5-list {
            list-style: none;
            margin: 20px 0;
        }

        .xcw5-list li {
            padding: 10px 0;
            padding-left: 30px;
            position: relative;
            color: #555;
            font-size: 16px;
        }

        .xcw5-list li:before {
            content: "→";
            position: absolute;
            left: 0;
            color: #0084ff;
            font-weight: bold;
            font-size: 18px;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .xcw5-navbar-container {
                height: 60px;
                padding: 0 15px;
            }

            .xcw5-nav-links {
                display: none;
            }

            .xcw5-mobile-menu {
                display: block;
            }

            .xcw5-hero h1 {
                font-size: 32px;
            }

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

            .xcw5-section h2 {
                font-size: 24px;
            }

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

            .xcw5-download-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .xcw5-download-btn {
                width: 100%;
                max-width: 300px;
            }

            .xcw5-cta-button {
                display: block;
                width: 100%;
                max-width: 300px;
                margin: 10px auto;
            }

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

            .xcw5-trust-badges {
                gap: 20px;
            }
        }

        @media (max-width: 480px) {
            .xcw5-hero {
                padding: 40px 15px;
            }

            .xcw5-hero h1 {
                font-size: 24px;
            }

            .xcw5-hero-desc {
                font-size: 14px;
            }

            .xcw5-main-content {
                padding: 30px 15px;
            }

            .xcw5-section h2 {
                font-size: 20px;
            }

            .xcw5-section h3 {
                font-size: 18px;
            }

            .xcw5-logo {
                font-size: 18px;
            }

            .xcw5-download-section {
                padding: 40px 15px;
            }
        }