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

        html, body {
            height: 100%;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f5f5;
        }

        a {
            text-decoration: none;
            color: inherit;
            transition: all 0.3s ease;
        }

        /* 导航栏样式 */
        .gcs5s-navbar-container {
            background: linear-gradient(135deg, #ffffff 0%, #f9f9f9 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 100;
        }

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

        .gcs5s-navbar-logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-weight: bold;
            font-size: 18px;
            color: #333;
        }

        .gcs5s-navbar-logo img {
            width: 40px;
            height: 40px;
            object-fit: contain;
        }

        .gcs5s-navbar-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .gcs5s-nav-link {
            color: #666;
            font-size: 14px;
            font-weight: 500;
            position: relative;
        }

        .gcs5s-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: linear-gradient(90deg, #ff6b35, #ff8c5a);
            transition: width 0.3s ease;
        }

        .gcs5s-nav-link:hover {
            color: #ff6b35;
        }

        .gcs5s-nav-link:hover::after {
            width: 100%;
        }

        /* 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, #ff6b35 0%, #ff8c5a 50%, #ffa070 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            margin-top: 20px;
            border-radius: 12px;
            box-shadow: 0 10px 40px rgba(255, 107, 53, 0.2);
        }

        .gcs5s-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .gcs5s-hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
            font-weight: 300;
        }

        .gcs5s-hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .gcs5s-btn-primary {
            background: white;
            color: #ff6b35;
            padding: 16px 40px;
            border-radius: 8px;
            font-weight: bold;
            font-size: 16px;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            border: none;
            transition: all 0.3s ease;
        }

        .gcs5s-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
        }

        .gcs5s-btn-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 16px 40px;
            border-radius: 8px;
            font-weight: bold;
            font-size: 16px;
            cursor: pointer;
            border: 2px solid white;
            transition: all 0.3s ease;
        }

        .gcs5s-btn-secondary:hover {
            background: white;
            color: #ff6b35;
            transform: translateY(-3px);
        }

        /* 内容区域 */
        .gcs5s-content-section {
            padding: 60px 0;
        }

        .gcs5s-section-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 50px;
            text-align: center;
            color: #333;
            position: relative;
            padding-bottom: 20px;
        }

        .gcs5s-section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, #ff6b35, #ff8c5a);
            border-radius: 2px;
        }

        /* 功能卡片 */
        .gcs5s-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .gcs5s-feature-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-top: 4px solid #ff6b35;
        }

        .gcs5s-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(0, 0, 0, 0.15);
        }

        .gcs5s-feature-icon {
            font-size: 40px;
            margin-bottom: 20px;
            display: block;
        }

        .gcs5s-feature-title {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 12px;
            color: #333;
        }

        .gcs5s-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        /* 平台兼容性 */
        .gcs5s-platforms-section {
            background: white;
            padding: 60px 0;
            margin: 40px 0;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        }

        .gcs5s-platforms-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .gcs5s-platform-item {
            text-align: center;
            padding: 30px;
            background: linear-gradient(135deg, #f5f5f5 0%, #fff 100%);
            border-radius: 10px;
            transition: all 0.3s ease;
        }

        .gcs5s-platform-item:hover {
            background: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 100%);
            color: white;
            transform: scale(1.05);
        }

        .gcs5s-platform-icon {
            font-size: 50px;
            margin-bottom: 20px;
        }

        .gcs5s-platform-name {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
        }

        .gcs5s-platform-version {
            font-size: 14px;
            opacity: 0.7;
        }

        /* 安装步骤 */
        .gcs5s-steps-section {
            background: white;
            padding: 60px 0;
            margin: 40px 0;
            border-radius: 12px;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
        }

        .gcs5s-steps-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .gcs5s-step-item {
            display: flex;
            gap: 30px;
            margin-bottom: 40px;
            align-items: flex-start;
        }

        .gcs5s-step-number {
            flex-shrink: 0;
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #ff6b35, #ff8c5a);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: bold;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
        }

        .gcs5s-step-content {
            flex: 1;
        }

        .gcs5s-step-title {
            font-size: 18px;
            font-weight: bold;
            margin-bottom: 10px;
            color: #333;
        }

        .gcs5s-step-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        /* CTA区域 */
        .gcs5s-cta-section {
            background: linear-gradient(135deg, #ff6b35 0%, #ff8c5a 50%, #ffa070 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
            margin: 60px 0 40px 0;
            border-radius: 12px;
        }

        .gcs5s-cta-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .gcs5s-cta-desc {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
        }

        .gcs5s-cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .gcs5s-btn-download {
            background: white;
            color: #ff6b35;
            padding: 16px 50px;
            border-radius: 8px;
            font-weight: bold;
            font-size: 16px;
            cursor: pointer;
            border: none;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
            transition: all 0.3s ease;
        }

        .gcs5s-btn-download:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 25px rgba(0, 0, 0, 0.15);
        }

        /* 页脚 */
        .gcs5s-footer {
            background: #2c3e50;
            color: white;
            padding: 50px 0 30px 0;
            margin-top: 60px;
        }

        .gcs5s-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .gcs5s-footer-column h4 {
            font-size: 16px;
            font-weight: bold;
            margin-bottom: 20px;
            color: #ff6b35;
        }

        .gcs5s-footer-link {
            display: block;
            font-size: 14px;
            color: #bbb;
            margin-bottom: 10px;
            transition: all 0.3s ease;
        }

        .gcs5s-footer-link:hover {
            color: #ff6b35;
            padding-left: 5px;
        }

        .gcs5s-footer-bottom {
            border-top: 1px solid #444;
            padding-top: 30px;
            text-align: center;
            font-size: 14px;
            color: #999;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .gcs5s-navbar-menu {
                gap: 15px;
            }

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

            .gcs5s-hero-title {
                font-size: 32px;
            }

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

            .gcs5s-hero-buttons {
                flex-direction: column;
                gap: 15px;
            }

            .gcs5s-btn-primary, .gcs5s-btn-secondary {
                width: 100%;
            }

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

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

            .gcs5s-platforms-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .gcs5s-step-item {
                gap: 20px;
            }

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

            .gcs5s-cta-desc {
                font-size: 16px;
            }

            .gcs5s-footer-content {
                grid-template-columns: repeat(2, 1fr);
                gap: 30px;
            }
        }

        @media (max-width: 480px) {
            .gcs5s-navbar-wrapper {
                height: 60px;
            }

            .gcs5s-navbar-menu {
                display: none;
            }

            .gcs5s-hero-section {
                padding: 50px 0;
                margin-top: 10px;
            }

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

            .gcs5s-hero-subtitle {
                font-size: 14px;
                margin-bottom: 30px;
            }

            .gcs5s-main-container {
                padding: 0 15px;
            }

            .gcs5s-section-title {
                font-size: 22px;
                margin-bottom: 30px;
            }

            .gcs5s-features-grid {
                gap: 20px;
            }

            .gcs5s-feature-card {
                padding: 20px;
            }

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

            .gcs5s-step-item {
                flex-direction: column;
                gap: 15px;
            }

            .gcs5s-step-number {
                width: 45px;
                height: 45px;
                font-size: 20px;
            }

            .gcs5s-cta-section {
                padding: 50px 0;
                margin: 40px 0 30px 0;
            }

            .gcs5s-cta-title {
                font-size: 22px;
            }

            .gcs5s-cta-desc {
                font-size: 14px;
                margin-bottom: 30px;
            }

            .gcs5s-cta-buttons {
                flex-direction: column;
            }

            .gcs5s-btn-download {
                width: 100%;
            }

            .gcs5s-footer-content {
                grid-template-columns: 1fr;
                gap: 25px;
            }
        }