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

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

        /* 导航栏样式 */
        .p9kq-navbar-wrapper {
            background-color: #ffffff;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 100;
        }

        .p9kq-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .p9kq-navbar-logo {
            display: flex;
            align-items: center;
            font-size: 20px;
            font-weight: 700;
            color: #0088cc;
            text-decoration: none;
        }

        .p9kq-navbar-logo img {
            height: 45px;
            margin-right: 12px;
        }

        .p9kq-navbar-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .p9kq-nav-link {
            text-decoration: none;
            color: #333;
            font-size: 14px;
            font-weight: 500;
            transition: color 0.3s ease;
        }

        .p9kq-nav-link:hover {
            color: #0088cc;
        }

        /* 主容器 */
        .p9kq-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .p9kq-hero-section {
            background: linear-gradient(135deg, #0088cc 0%, #0072b1 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            border-radius: 0 0 20px 20px;
        }

        .p9kq-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
        }

        .p9kq-hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
            font-weight: 300;
        }

        .p9kq-hero-cta-group {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 40px;
        }

        .p9kq-btn-primary {
            background-color: #ffffff;
            color: #0088cc;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .p9kq-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
        }

        .p9kq-btn-secondary {
            background-color: transparent;
            color: #ffffff;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            border: 2px solid #ffffff;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .p9kq-btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
        }

        .p9kq-hero-features {
            display: flex;
            gap: 40px;
            justify-content: center;
            flex-wrap: wrap;
            margin-top: 50px;
            font-size: 14px;
        }

        .p9kq-feature-item {
            display: flex;
            align-items: center;
            gap: 8px;
        }

        .p9kq-feature-icon {
            width: 24px;
            height: 24px;
            background-color: rgba(255, 255, 255, 0.3);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 14px;
        }

        /* 下载信息区 */
        .p9kq-download-section {
            background-color: #ffffff;
            padding: 60px 20px;
            margin: -20px 20px 60px 20px;
            border-radius: 12px;
            box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
        }

        .p9kq-download-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .p9kq-download-card {
            padding: 30px;
            border: 1px solid #e8e8e8;
            border-radius: 12px;
            text-align: center;
            transition: all 0.3s ease;
        }

        .p9kq-download-card:hover {
            border-color: #0088cc;
            box-shadow: 0 8px 24px rgba(0, 136, 204, 0.12);
        }

        .p9kq-platform-icon {
            font-size: 48px;
            margin-bottom: 16px;
        }

        .p9kq-platform-name {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #333;
        }

        .p9kq-platform-info {
            font-size: 13px;
            color: #666;
            margin-bottom: 20px;
        }

        .p9kq-download-btn {
            background-color: #0088cc;
            color: white;
            padding: 12px 28px;
            border: none;
            border-radius: 6px;
            cursor: pointer;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .p9kq-download-btn:hover {
            background-color: #0072b1;
            transform: translateY(-1px);
        }

        /* 功能介绍区 */
        .p9kq-features-section {
            padding: 60px 20px;
            background-color: #ffffff;
            margin-bottom: 60px;
            border-radius: 12px;
        }

        .p9kq-section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .p9kq-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .p9kq-feature-box {
            padding: 30px;
            background-color: #f8f9fa;
            border-radius: 12px;
            border-left: 4px solid #0088cc;
        }

        .p9kq-feature-box-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 12px;
            color: #333;
        }

        .p9kq-feature-box-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        /* 系统要求区 */
        .p9kq-requirements-section {
            background: linear-gradient(135deg, #f0f4f8 0%, #f8f9fa 100%);
            padding: 60px 20px;
            margin-bottom: 60px;
            border-radius: 12px;
        }

        .p9kq-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }

        .p9kq-requirement-item {
            background-color: #ffffff;
            padding: 25px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .p9kq-requirement-label {
            font-size: 12px;
            color: #999;
            text-transform: uppercase;
            font-weight: 600;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .p9kq-requirement-value {
            font-size: 18px;
            font-weight: 700;
            color: #0088cc;
        }

        /* FAQ区 */
        .p9kq-faq-section {
            padding: 60px 20px;
            background-color: #ffffff;
            margin-bottom: 60px;
            border-radius: 12px;
        }

        .p9kq-faq-list {
            max-width: 800px;
            margin: 40px auto 0;
        }

        .p9kq-faq-item {
            border-bottom: 1px solid #e8e8e8;
            padding: 25px 0;
        }

        .p9kq-faq-item:last-child {
            border-bottom: none;
        }

        .p9kq-faq-question {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            cursor: pointer;
            user-select: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .p9kq-faq-question:hover {
            color: #0088cc;
        }

        .p9kq-faq-answer {
            font-size: 14px;
            color: #666;
            margin-top: 15px;
            line-height: 1.8;
            display: none;
        }

        .p9kq-faq-answer.active {
            display: block;
        }

        .p9kq-faq-toggle {
            font-size: 20px;
            transition: transform 0.3s ease;
        }

        .p9kq-faq-toggle.active {
            transform: rotate(180deg);
        }

        /* CTA区域 */
        .p9kq-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #0072b1 100%);
            padding: 80px 20px;
            text-align: center;
            color: white;
            border-radius: 12px;
            margin-bottom: 60px;
        }

        .p9kq-cta-title {
            font-size: 42px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .p9kq-cta-subtitle {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
        }

        /* 页脚 */
        .p9kq-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 60px 20px 30px;
        }

        .p9kq-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .p9kq-footer-section-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 20px;
        }

        .p9kq-footer-link {
            display: block;
            color: #bdc3c7;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 12px;
            transition: color 0.3s ease;
        }

        .p9kq-footer-link:hover {
            color: #0088cc;
        }

        .p9kq-footer-bottom {
            border-top: 1px solid #34495e;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
            color: #95a5a6;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .p9kq-hero-title {
                font-size: 32px;
            }

            .p9kq-hero-subtitle {
                font-size: 16px;
            }

            .p9kq-navbar-menu {
                gap: 15px;
                font-size: 12px;
            }

            .p9kq-hero-cta-group {
                flex-direction: column;
                align-items: center;
            }

            .p9kq-btn-primary, .p9kq-btn-secondary {
                width: 100%;
                max-width: 300px;
            }

            .p9kq-hero-features {
                flex-direction: column;
                gap: 20px;
            }

            .p9kq-section-title {
                font-size: 28px;
            }

            .p9kq-cta-title {
                font-size: 28px;
            }

            .p9kq-download-section {
                margin: -20px 0 60px 0;
            }
        }

        @media (max-width: 480px) {
            .p9kq-navbar-container {
                flex-direction: column;
                height: auto;
                padding: 15px 20px;
            }

            .p9kq-navbar-menu {
                flex-direction: column;
                gap: 10px;
                width: 100%;
                text-align: center;
            }

            .p9kq-nav-link {
                padding: 8px 0;
                display: block;
            }

            .p9kq-hero-section {
                padding: 40px 15px;
            }

            .p9kq-hero-title {
                font-size: 24px;
            }

            .p9kq-hero-subtitle {
                font-size: 14px;
            }

            .p9kq-section-title {
                font-size: 22px;
            }

            .p9kq-download-grid {
                grid-template-columns: 1fr;
            }

            .p9kq-features-grid {
                grid-template-columns: 1fr;
            }

            .p9kq-requirements-grid {
                grid-template-columns: 1fr;
            }
        }