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

        html {
            scroll-behavior: smooth;
        }

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

        /* 导航栏样式 */
        .gcs5s-navbar {
            background-color: #fff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .gcs5s-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .gcs5s-logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }

        .gcs5s-logo-wrapper img {
            height: 40px;
            width: auto;
        }

        .gcs5s-brand-name {
            font-size: 18px;
            font-weight: 700;
            color: #333;
            display: none;
        }

        .gcs5s-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .gcs5s-nav-link {
            text-decoration: none;
            color: #555;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }

        .gcs5s-nav-link:hover {
            color: #0066cc;
            border-bottom-color: #0066cc;
        }

        /* 主容器 */
        .gcs5s-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .gcs5s-hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            padding: 80px 20px;
            text-align: center;
            border-radius: 0 0 20px 20px;
        }

        .gcs5s-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .gcs5s-hero-title {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .gcs5s-hero-subtitle {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.5;
        }

        .gcs5s-cta-button-primary {
            display: inline-block;
            background-color: #fff;
            color: #667eea;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            border-radius: 8px;
            transition: all 0.3s ease;
            margin-right: 15px;
            cursor: pointer;
            border: none;
        }

        .gcs5s-cta-button-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        .gcs5s-cta-button-secondary {
            display: inline-block;
            background-color: transparent;
            color: #fff;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            text-decoration: none;
            border-radius: 8px;
            border: 2px solid #fff;
            transition: all 0.3s ease;
            cursor: pointer;
            margin-top: 10px;
        }

        .gcs5s-cta-button-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* 特性区域 */
        .gcs5s-features-section {
            padding: 80px 20px;
            background-color: #fff;
            margin-top: 40px;
            border-radius: 12px;
        }

        .gcs5s-section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .gcs5s-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .gcs5s-feature-card {
            padding: 30px;
            background-color: #f8f9fa;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
            border: 1px solid #e9ecef;
        }

        .gcs5s-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 24px rgba(0, 0, 0, 0.1);
            background-color: #fff;
        }

        .gcs5s-feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .gcs5s-feature-title {
            font-size: 20px;
            font-weight: 600;
            margin-bottom: 15px;
            color: #333;
        }

        .gcs5s-feature-description {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 安装说明区域 */
        .gcs5s-install-section {
            padding: 80px 20px;
            background-color: #f8f9fa;
            margin-top: 40px;
            border-radius: 12px;
        }

        .gcs5s-install-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .gcs5s-install-steps {
            list-style: none;
        }

        .gcs5s-install-step {
            padding: 20px 0;
            border-bottom: 1px solid #e9ecef;
        }

        .gcs5s-install-step:last-child {
            border-bottom: none;
        }

        .gcs5s-step-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            background-color: #667eea;
            color: #fff;
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            font-weight: 700;
            margin-right: 15px;
            flex-shrink: 0;
        }

        .gcs5s-step-text {
            display: inline-block;
            vertical-align: middle;
            max-width: calc(100% - 55px);
        }

        .gcs5s-step-title {
            font-weight: 600;
            font-size: 16px;
            color: #333;
            margin-bottom: 5px;
        }

        .gcs5s-step-description {
            font-size: 14px;
            color: #666;
        }

        .gcs5s-install-image {
            text-align: center;
        }

        .gcs5s-install-image img {
            max-width: 100%;
            height: auto;
            border-radius: 12px;
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.1);
        }

        /* 兼容性区域 */
        .gcs5s-compatibility-section {
            padding: 80px 20px;
            background-color: #fff;
            margin-top: 40px;
            border-radius: 12px;
        }

        .gcs5s-compatibility-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-top: 30px;
        }

        .gcs5s-compatibility-item {
            padding: 20px;
            background-color: #f8f9fa;
            border-radius: 8px;
            text-align: center;
            border-left: 4px solid #667eea;
        }

        .gcs5s-compatibility-label {
            font-size: 14px;
            color: #666;
            margin-bottom: 10px;
        }

        .gcs5s-compatibility-value {
            font-size: 18px;
            font-weight: 600;
            color: #333;
        }

        /* 优势对比区域 */
        .gcs5s-advantages-section {
            padding: 80px 20px;
            background-color: #f8f9fa;
            margin-top: 40px;
            border-radius: 12px;
        }

        .gcs5s-advantages-list {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 30px;
            margin-top: 30px;
        }

        .gcs5s-advantage-item {
            display: flex;
            gap: 20px;
        }

        .gcs5s-advantage-check {
            color: #28a745;
            font-size: 24px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .gcs5s-advantage-text {
            flex: 1;
        }

        .gcs5s-advantage-title {
            font-weight: 600;
            font-size: 16px;
            color: #333;
            margin-bottom: 5px;
        }

        .gcs5s-advantage-description {
            font-size: 14px;
            color: #666;
        }

        /* CTA区域 */
        .gcs5s-cta-section {
            padding: 60px 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            text-align: center;
            margin-top: 40px;
            border-radius: 12px;
            margin-bottom: 40px;
        }

        .gcs5s-cta-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .gcs5s-cta-description {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        /* 页脚 */
        .gcs5s-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 50px 20px;
            margin-top: 60px;
        }

        .gcs5s-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }

        .gcs5s-footer-section {
            margin-bottom: 20px;
        }

        .gcs5s-footer-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #fff;
        }

        .gcs5s-footer-links {
            list-style: none;
        }

        .gcs5s-footer-link {
            margin-bottom: 10px;
        }

        .gcs5s-footer-link a {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .gcs5s-footer-link a:hover {
            color: #fff;
        }

        .gcs5s-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 30px;
            margin-top: 30px;
            text-align: center;
            font-size: 14px;
            color: #95a5a6;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .gcs5s-hero-title {
                font-size: 28px;
            }

            .gcs5s-hero-subtitle {
                font-size: 16px;
            }

            .gcs5s-section-title {
                font-size: 28px;
            }

            .gcs5s-install-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }

            .gcs5s-advantages-list {
                grid-template-columns: 1fr;
            }

            .gcs5s-nav-menu {
                gap: 15px;
            }

            .gcs5s-nav-link {
                font-size: 12px;
            }

            .gcs5s-cta-button-primary,
            .gcs5s-cta-button-secondary {
                padding: 12px 30px;
                font-size: 14px;
                display: block;
                margin: 10px auto;
            }

            .gcs5s-brand-name {
                display: inline;
            }

            .gcs5s-cta-title {
                font-size: 24px;
            }

            .gcs5s-footer-content {
                grid-template-columns: 1fr;
                gap: 20px;
            }
        }

        @media (max-width: 480px) {
            .gcs5s-navbar-container {
                height: auto;
                padding: 15px 20px;
                flex-direction: column;
                gap: 15px;
            }

            .gcs5s-nav-menu {
                flex-direction: column;
                gap: 10px;
                text-align: center;
            }

            .gcs5s-hero-section {
                padding: 50px 20px;
            }

            .gcs5s-hero-title {
                font-size: 24px;
            }

            .gcs5s-features-grid {
                grid-template-columns: 1fr;
            }

            .gcs5s-section-title {
                font-size: 24px;
                margin-bottom: 30px;
            }

            .gcs5s-features-section,
            .gcs5s-install-section,
            .gcs5s-compatibility-section,
            .gcs5s-advantages-section {
                padding: 40px 20px;
            }

            .gcs5s-compatibility-grid {
                grid-template-columns: 1fr;
            }
        }