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

        html, body {
            width: 100%;
            height: 100%;
        }

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

        /* 导航栏样式 */
        .dgca-navbar-wrapper {
            width: 100%;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

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

        .dgca-brand-name {
            color: white;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .dgca-nav-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .dgca-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

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

        .dgca-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: white;
            transition: width 0.3s ease;
        }

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

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

        /* 英雄区 */
        .dgca-hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
        }

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

        .dgca-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .dgca-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.5;
        }

        .dgca-hero-cta-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 40px;
        }

        .dgca-btn-primary {
            display: inline-block;
            padding: 16px 40px;
            background-color: #ffb800;
            color: #333;
            text-decoration: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 16px;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(255, 184, 0, 0.3);
        }

        .dgca-btn-primary:hover {
            background-color: #ffc933;
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(255, 184, 0, 0.4);
        }

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

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

        /* 特性区 */
        .dgca-features-section {
            margin-bottom: 80px;
        }

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

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

        .dgca-feature-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .dgca-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
        }

        .dgca-feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            margin-bottom: 20px;
        }

        .dgca-feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
            color: #333;
        }

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

        /* 下载信息区 */
        .dgca-download-info-section {
            background: white;
            padding: 60px 40px;
            border-radius: 12px;
            margin-bottom: 80px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .dgca-download-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 20px;
        }

        .dgca-download-title {
            font-size: 32px;
            font-weight: 700;
            color: #333;
        }

        .dgca-version-badge {
            display: inline-block;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-weight: 600;
            font-size: 14px;
        }

        .dgca-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .dgca-download-item {
            background: #f8f9fa;
            padding: 25px;
            border-radius: 10px;
            text-align: center;
            border: 2px solid #e9ecef;
            transition: all 0.3s ease;
        }

        .dgca-download-item:hover {
            border-color: #667eea;
            background: #f0f4ff;
        }

        .dgca-download-label {
            font-size: 14px;
            color: #666;
            margin-bottom: 10px;
            font-weight: 500;
        }

        .dgca-download-value {
            font-size: 20px;
            font-weight: 700;
            color: #333;
            margin-bottom: 15px;
        }

        .dgca-download-btn {
            width: 100%;
            padding: 14px 20px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            border: none;
            border-radius: 8px;
            font-weight: 700;
            font-size: 15px;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .dgca-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(102, 126, 234, 0.3);
        }

        /* 系统要求 */
        .dgca-requirements-section {
            background: white;
            padding: 60px 40px;
            border-radius: 12px;
            margin-bottom: 80px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .dgca-requirements-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 30px;
            color: #333;
        }

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

        .dgca-requirement-item {
            padding: 25px;
            background: #f8f9fa;
            border-radius: 10px;
            border-left: 4px solid #667eea;
        }

        .dgca-requirement-label {
            font-size: 14px;
            color: #666;
            margin-bottom: 10px;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.5px;
        }

        .dgca-requirement-content {
            font-size: 16px;
            color: #333;
            font-weight: 500;
        }

        /* 优势区 */
        .dgca-benefits-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 40px;
            border-radius: 12px;
            margin-bottom: 80px;
        }

        .dgca-benefits-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
        }

        .dgca-benefits-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .dgca-benefit-item {
            display: flex;
            gap: 15px;
            align-items: flex-start;
        }

        .dgca-benefit-icon {
            font-size: 24px;
            margin-top: 5px;
            flex-shrink: 0;
        }

        .dgca-benefit-text {
            font-size: 16px;
            line-height: 1.6;
        }

        .dgca-benefit-title {
            font-weight: 700;
            margin-bottom: 5px;
        }

        /* FAQ区 */
        .dgca-faq-section {
            margin-bottom: 80px;
        }

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

        .dgca-faq-container {
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
        }

        .dgca-faq-item {
            border-bottom: 1px solid #e9ecef;
            padding: 0;
        }

        .dgca-faq-item:last-child {
            border-bottom: none;
        }

        .dgca-faq-question {
            padding: 25px;
            background: white;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
            font-weight: 600;
            color: #333;
            font-size: 16px;
        }

        .dgca-faq-question:hover {
            background: #f8f9fa;
        }

        .dgca-faq-toggle {
            width: 24px;
            height: 24px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: #667eea;
            font-weight: 700;
            font-size: 18px;
        }

        .dgca-faq-answer {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: #666;
            line-height: 1.6;
        }

        .dgca-faq-item.active .dgca-faq-answer {
            padding: 25px;
            max-height: 500px;
        }

        /* CTA区 */
        .dgca-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 60px 40px;
            border-radius: 12px;
            text-align: center;
            margin-bottom: 80px;
        }

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

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

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

        /* 页脚 */
        .dgca-footer-wrapper {
            background: #222;
            color: #999;
            padding: 60px 20px 30px;
            margin-top: 60px;
        }

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

        .dgca-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #444;
        }

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

        .dgca-footer-link {
            display: block;
            color: #999;
            text-decoration: none;
            margin-bottom: 12px;
            transition: all 0.3s ease;
            font-size: 14px;
        }

        .dgca-footer-link:hover {
            color: #667eea;
        }

        .dgca-footer-bottom {
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
        }

        .dgca-copyright {
            color: #666;
            font-size: 14px;
        }

        .dgca-footer-social {
            display: flex;
            gap: 20px;
        }

        .dgca-social-icon {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: #333;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            text-decoration: none;
            transition: all 0.3s ease;
            font-size: 16px;
        }

        .dgca-social-icon:hover {
            background: #667eea;
            transform: translateY(-3px);
        }

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

            .dgca-nav-link {
                font-size: 13px;
            }

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

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

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

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

            .dgca-download-header {
                flex-direction: column;
                align-items: flex-start;
            }

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

            .dgca-hero-cta-group {
                flex-direction: column;
            }

            .dgca-btn-primary, .dgca-btn-secondary {
                width: 100%;
                text-align: center;
            }

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

            .dgca-footer-bottom {
                flex-direction: column-reverse;
                align-items: flex-start;
            }
        }

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

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

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

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

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

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

            .dgca-hero-subtitle {
                font-size: 14px;
            }

            .dgca-download-info-section,
            .dgca-requirements-section,
            .dgca-benefits-section,
            .dgca-cta-section {
                padding: 40px 20px;
            }

            .dgca-section-title,
            .dgca-faq-title,
            .dgca-cta-title {
                font-size: 24px;
            }
        }