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

        html {
            font-size: 16px;
        }

        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 */
        .bpxvn-navbar-wrapper {
            background: linear-gradient(135deg, #1e90ff 0%, #1873cc 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

        .bpxvn-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 12px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }

        .bpxvn-navbar-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            text-decoration: none;
            color: white;
            font-weight: 600;
            font-size: 18px;
        }

        .bpxvn-navbar-logo img {
            height: 40px;
            width: auto;
        }

        .bpxvn-navbar-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .bpxvn-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            transition: all 0.3s ease;
            padding: 8px 12px;
            border-radius: 4px;
        }

        .bpxvn-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* 头部英雄区 */
        .bpxvn-hero-section {
            background: linear-gradient(135deg, #1e90ff 0%, #1873cc 50%, #0d47a1 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

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

        .bpxvn-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }

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

        .bpxvn-hero-features {
            display: flex;
            justify-content: center;
            gap: 30px;
            margin-bottom: 40px;
            flex-wrap: wrap;
        }

        .bpxvn-feature-badge {
            background-color: rgba(255, 255, 255, 0.15);
            padding: 10px 20px;
            border-radius: 20px;
            font-size: 14px;
            backdrop-filter: blur(10px);
        }

        /* 下载按钮组 */
        .bpxvn-download-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .bpxvn-btn-primary {
            background: linear-gradient(135deg, #ff6b6b 0%, #ee5a6f 100%);
            color: white;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(255, 107, 107, 0.3);
            text-decoration: none;
            display: inline-block;
        }

        .bpxvn-btn-primary:hover {
            transform: translateY(-4px);
            box-shadow: 0 6px 20px rgba(255, 107, 107, 0.4);
        }

        .bpxvn-btn-secondary {
            background-color: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 16px 40px;
            font-size: 16px;
            font-weight: 600;
            border: 2px solid white;
            border-radius: 8px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .bpxvn-btn-secondary:hover {
            background-color: white;
            color: #1e90ff;
            transform: translateY(-4px);
        }

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

        /* 版本信息卡片 */
        .bpxvn-version-section {
            background: white;
            margin: -40px 20px 60px 20px;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
            position: relative;
            z-index: 10;
        }

        .bpxvn-version-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .bpxvn-version-item {
            text-align: center;
            padding: 20px;
            border: 1px solid #e0e0e0;
            border-radius: 8px;
            transition: all 0.3s ease;
        }

        .bpxvn-version-item:hover {
            border-color: #1e90ff;
            background-color: #f0f7ff;
            transform: translateY(-4px);
        }

        .bpxvn-version-label {
            font-size: 12px;
            color: #999;
            text-transform: uppercase;
            letter-spacing: 1px;
            margin-bottom: 8px;
        }

        .bpxvn-version-value {
            font-size: 24px;
            font-weight: 700;
            color: #1e90ff;
            margin-bottom: 5px;
        }

        .bpxvn-version-desc {
            font-size: 13px;
            color: #666;
        }

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

        .bpxvn-section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 30px;
            color: #1a1a1a;
            position: relative;
            padding-bottom: 15px;
        }

        .bpxvn-section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #1e90ff, #ff6b6b);
            border-radius: 2px;
        }

        .bpxvn-h1-title {
            font-size: 36px;
            font-weight: 700;
            margin: 30px 0;
            color: #1a1a1a;
        }

        /* 特性卡片网格 */
        .bpxvn-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin: 40px 0;
        }

        .bpxvn-feature-card {
            background: white;
            padding: 30px;
            border-radius: 10px;
            border-left: 4px solid #1e90ff;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.06);
            transition: all 0.3s ease;
        }

        .bpxvn-feature-card:hover {
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.12);
            transform: translateY(-4px);
        }

        .bpxvn-feature-icon {
            font-size: 32px;
            margin-bottom: 15px;
        }

        .bpxvn-feature-title {
            font-size: 18px;
            font-weight: 600;
            margin-bottom: 10px;
            color: #1a1a1a;
        }

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

        /* 系统要求 */
        .bpxvn-requirements-section {
            background: #f0f7ff;
            padding: 40px;
            border-radius: 10px;
            margin: 40px 0;
            border: 2px solid #d0e8ff;
        }

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

        .bpxvn-requirement-item {
            background: white;
            padding: 20px;
            border-radius: 8px;
        }

        .bpxvn-requirement-label {
            font-size: 12px;
            color: #1e90ff;
            text-transform: uppercase;
            font-weight: 600;
            margin-bottom: 8px;
        }

        .bpxvn-requirement-content {
            font-size: 14px;
            color: #333;
            line-height: 1.6;
        }

        /* 常见问题 */
        .bpxvn-faq-section {
            margin: 60px 0;
        }

        .bpxvn-faq-item {
            background: white;
            padding: 20px;
            margin-bottom: 15px;
            border-radius: 8px;
            border-left: 4px solid #ff6b6b;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .bpxvn-faq-question {
            font-size: 16px;
            font-weight: 600;
            color: #1a1a1a;
            cursor: pointer;
            user-select: none;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .bpxvn-faq-toggle {
            color: #1e90ff;
            font-weight: 700;
        }

        .bpxvn-faq-answer {
            font-size: 14px;
            color: #666;
            margin-top: 15px;
            line-height: 1.7;
            display: none;
        }

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

        /* 页脚 */
        .bpxvn-footer-wrapper {
            background: #1a1a1a;
            color: #ccc;
            padding: 50px 20px 20px 20px;
            margin-top: 80px;
        }

        .bpxvn-footer-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .bpxvn-footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .bpxvn-footer-column h3 {
            color: white;
            font-size: 16px;
            margin-bottom: 15px;
        }

        .bpxvn-footer-column a {
            display: block;
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            margin-bottom: 10px;
            transition: color 0.3s ease;
        }

        .bpxvn-footer-column a:hover {
            color: #1e90ff;
        }

        .bpxvn-footer-divider {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
            font-size: 12px;
            color: #999;
        }

        /* CTA区域 */
        .bpxvn-cta-section {
            background: linear-gradient(135deg, #1e90ff 0%, #1873cc 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            border-radius: 10px;
            margin: 60px 0;
        }

        .bpxvn-cta-title {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 15px;
        }

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

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

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

            .bpxvn-navbar-menu {
                gap: 15px;
            }

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

            .bpxvn-section-title {
                font-size: 24px;
            }

            .bpxvn-h1-title {
                font-size: 24px;
            }

            .bpxvn-version-section {
                margin: -30px 20px 40px 20px;
                padding: 25px;
            }

            .bpxvn-download-buttons {
                gap: 10px;
            }

            .bpxvn-btn-primary,
            .bpxvn-btn-secondary {
                padding: 12px 30px;
                font-size: 14px;
            }

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

            .bpxvn-cta-text {
                font-size: 14px;
            }

            .bpxvn-footer-grid {
                grid-template-columns: repeat(2, 1fr);
                gap: 25px;
            }
        }

        @media (max-width: 480px) {
            html {
                font-size: 14px;
            }

            .bpxvn-navbar-container {
                flex-direction: column;
                gap: 10px;
            }

            .bpxvn-navbar-menu {
                flex-wrap: wrap;
                gap: 10px;
                justify-content: center;
            }

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

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

            .bpxvn-version-grid {
                grid-template-columns: 1fr;
            }

            .bpxvn-download-buttons {
                flex-direction: column;
            }

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

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

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

        /* 动画 */
        @keyframes slideInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .bpxvn-animate-up {
            animation: slideInUp 0.6s ease-out;
        }