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

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

        /* 导航栏样式 */
        .xcw5-navbar {
            background: linear-gradient(135deg, #0088cc 0%, #0077b5 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

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

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

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

        .xcw5-brand-name {
            color: white;
            font-size: 24px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

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

        .xcw5-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: opacity 0.3s ease, text-shadow 0.3s ease;
            cursor: pointer;
        }

        .xcw5-nav-link:hover {
            opacity: 0.8;
            text-shadow: 0 0 10px rgba(255, 255, 255, 0.3);
        }

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

        /* 英雄区 */
        .xcw5-hero-section {
            background: linear-gradient(135deg, #0088cc 0%, #00a8e8 50%, #0077b5 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            border-radius: 0;
        }

        .xcw5-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .xcw5-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
        }

        .xcw5-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            font-weight: 300;
        }

        .xcw5-hero-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .xcw5-btn-primary {
            background: white;
            color: #0088cc;
            padding: 16px 40px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            text-decoration: none;
            display: inline-block;
        }

        .xcw5-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .xcw5-btn-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 16px 40px;
            border: 2px solid white;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .xcw5-btn-secondary:hover {
            background: white;
            color: #0088cc;
        }

        /* 特性区 */
        .xcw5-features-section {
            padding: 80px 20px;
            background: white;
        }

        .xcw5-section-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 50px;
            text-align: center;
            color: #222;
        }

        .xcw5-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .xcw5-feature-card {
            background: #f8f9fa;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .xcw5-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 10px 30px rgba(0, 136, 204, 0.15);
            border-color: #0088cc;
        }

        .xcw5-feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
            height: 60px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #0088cc;
        }

        .xcw5-feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #222;
        }

        .xcw5-feature-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.6;
        }

        /* 下载指南 */
        .xcw5-download-guide {
            padding: 80px 20px;
            background: #f8f9fa;
        }

        .xcw5-guide-steps {
            max-width: 900px;
            margin: 0 auto;
        }

        .xcw5-step-item {
            background: white;
            padding: 25px;
            margin-bottom: 20px;
            border-radius: 8px;
            border-left: 5px solid #0088cc;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .xcw5-step-item:hover {
            box-shadow: 0 4px 15px rgba(0, 136, 204, 0.15);
        }

        .xcw5-step-number {
            display: inline-block;
            background: #0088cc;
            color: white;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            font-weight: 700;
            margin-right: 15px;
            margin-bottom: 10px;
        }

        .xcw5-step-title {
            font-size: 18px;
            font-weight: 700;
            color: #222;
            margin-bottom: 8px;
        }

        .xcw5-step-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.6;
        }

        /* 兼容性 */
        .xcw5-compatibility-section {
            padding: 80px 20px;
            background: white;
        }

        .xcw5-compat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            max-width: 1000px;
            margin: 0 auto;
        }

        .xcw5-compat-item {
            background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
            padding: 25px;
            border-radius: 8px;
            text-align: center;
            border: 1px solid #dee2e6;
        }

        .xcw5-compat-name {
            font-size: 16px;
            font-weight: 700;
            color: #222;
            margin-bottom: 8px;
        }

        .xcw5-compat-version {
            font-size: 14px;
            color: #0088cc;
            font-weight: 600;
        }

        /* CTA区 */
        .xcw5-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #00a8e8 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            border-radius: 0;
        }

        .xcw5-cta-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .xcw5-cta-desc {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .xcw5-cta-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

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

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

        .xcw5-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .xcw5-footer-section h4 {
            color: white;
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .xcw5-footer-links {
            list-style: none;
        }

        .xcw5-footer-links li {
            margin-bottom: 12px;
        }

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

        .xcw5-footer-links a:hover {
            color: #0088cc;
        }

        .xcw5-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            text-align: center;
            font-size: 14px;
            color: #999;
        }

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

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

            .xcw5-section-title {
                font-size: 28px;
            }

            .xcw5-nav-menu {
                gap: 15px;
                font-size: 13px;
            }

            .xcw5-navbar-container {
                padding: 0 15px;
                height: 60px;
            }

            .xcw5-logo-section img {
                height: 35px;
            }

            .xcw5-brand-name {
                font-size: 18px;
            }

            .xcw5-hero-buttons {
                flex-direction: column;
            }

            .xcw5-btn-primary,
            .xcw5-btn-secondary {
                width: 100%;
            }

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

            .xcw5-cta-buttons {
                flex-direction: column;
            }

            .xcw5-hero-section {
                padding: 50px 20px;
            }

            .xcw5-features-section,
            .xcw5-download-guide,
            .xcw5-compatibility-section {
                padding: 50px 20px;
            }
        }

        @media (max-width: 480px) {
            .xcw5-hero-title {
                font-size: 24px;
            }

            .xcw5-section-title {
                font-size: 22px;
            }

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

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

        /* 额外优化 */
        a {
            color: #0088cc;
            text-decoration: none;
        }

        a:hover {
            text-decoration: underline;
        }

        img {
            max-width: 100%;
            height: auto;
            display: block;
        }