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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Microsoft YaHei', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }

        /* 导航栏样式 */
        .bh040-nav-container {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .bh040-nav-wrapper {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 15px 20px;
        }

        .bh040-logo-area {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 18px;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }

        .bh040-logo-area img {
            height: 40px;
            width: auto;
        }

        .bh040-nav-menu {
            display: flex;
            gap: 30px;
            align-items: center;
        }

        .bh040-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            transition: opacity 0.3s ease;
            position: relative;
        }

        .bh040-nav-link:hover {
            opacity: 0.8;
        }

        .bh040-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background-color: white;
            transition: width 0.3s ease;
        }

        .bh040-nav-link:hover::after {
            width: 100%;
        }

        /* 响应式菜单 */
        @media (max-width: 768px) {
            .bh040-nav-menu {
                flex-direction: column;
                gap: 15px;
                display: none;
            }

            .bh040-nav-menu.active {
                display: flex;
            }

            .bh040-nav-wrapper {
                flex-wrap: wrap;
            }
        }

        /* Hero部分 */
        .bh040-hero {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

        .bh040-hero-content {
            max-width: 1200px;
            margin: 0 auto;
        }

        .bh040-hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
            font-weight: 700;
            line-height: 1.2;
        }

        .bh040-hero-subtitle {
            font-size: 20px;
            margin-bottom: 30px;
            opacity: 0.95;
            font-weight: 300;
        }

        .bh040-hero-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .bh040-btn-primary {
            background-color: #fff;
            color: #0088cc;
            padding: 15px 40px;
            font-size: 16px;
            border: none;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .bh040-btn-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 20px rgba(0, 0, 0, 0.2);
        }

        .bh040-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 15px 40px;
            font-size: 16px;
            border: 2px solid white;
            border-radius: 8px;
            cursor: pointer;
            font-weight: 600;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .bh040-btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-2px);
        }

        /* 版本信息卡片 */
        .bh040-version-info {
            max-width: 1200px;
            margin: 40px auto;
            padding: 0 20px;
        }

        .bh040-info-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .bh040-card {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

        .bh040-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
        }

        .bh040-card-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .bh040-card h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #0088cc;
        }

        .bh040-card p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 版本特性部分 */
        .bh040-features {
            max-width: 1200px;
            margin: 60px auto;
            padding: 0 20px;
        }

        .bh040-section-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 40px;
            text-align: center;
            color: #333;
            position: relative;
            padding-bottom: 20px;
        }

        .bh040-section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #0088cc, #005fa3);
            border-radius: 2px;
        }

        .bh040-feature-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 25px;
        }

        .bh040-feature-item {
            background: white;
            padding: 25px;
            border-radius: 8px;
            border-left: 4px solid #0088cc;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .bh040-feature-item:hover {
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
        }

        .bh040-feature-item h4 {
            font-size: 18px;
            color: #0088cc;
            margin-bottom: 10px;
        }

        .bh040-feature-item p {
            font-size: 14px;
            color: #666;
            line-height: 1.6;
        }

        /* 更新日志部分 */
        .bh040-changelog {
            max-width: 1200px;
            margin: 60px auto;
            padding: 40px 20px;
            background: white;
            border-radius: 10px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
        }

        .bh040-changelog-item {
            padding: 20px 0;
            border-bottom: 1px solid #eee;
        }

        .bh040-changelog-item:last-child {
            border-bottom: none;
        }

        .bh040-changelog-version {
            font-size: 16px;
            font-weight: 600;
            color: #0088cc;
            margin-bottom: 10px;
        }

        .bh040-changelog-date {
            font-size: 12px;
            color: #999;
            margin-bottom: 10px;
        }

        .bh040-changelog-content {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        .bh040-changelog-content ul {
            margin-left: 20px;
            margin-top: 10px;
        }

        .bh040-changelog-content li {
            margin-bottom: 8px;
        }

        /* CTA区域 */
        .bh040-cta-section {
            background: linear-gradient(135deg, #0088cc 0%, #005fa3 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
            margin-top: 60px;
        }

        .bh040-cta-content {
            max-width: 600px;
            margin: 0 auto;
        }

        .bh040-cta-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 15px;
        }

        .bh040-cta-text {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        /* 系统要求部分 */
        .bh040-requirements {
            max-width: 1200px;
            margin: 60px auto;
            padding: 0 20px;
        }

        .bh040-req-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 25px;
        }

        .bh040-req-card {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
        }

        .bh040-req-card h3 {
            font-size: 18px;
            color: #0088cc;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .bh040-req-card p {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        /* 页脚 */
        .bh040-footer {
            background-color: #1a1a1a;
            color: #ccc;
            padding: 40px 20px;
            margin-top: 60px;
        }

        .bh040-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
        }

        .bh040-footer-section h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 15px;
            font-weight: 600;
        }

        .bh040-footer-section ul {
            list-style: none;
        }

        .bh040-footer-section li {
            margin-bottom: 10px;
        }

        .bh040-footer-section a {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .bh040-footer-section a:hover {
            color: #0088cc;
        }

        .bh040-footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid #333;
            font-size: 13px;
            color: #999;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .bh040-hero h1 {
                font-size: 32px;
            }

            .bh040-hero-subtitle {
                font-size: 16px;
            }

            .bh040-hero-buttons {
                flex-direction: column;
            }

            .bh040-btn-primary,
            .bh040-btn-secondary {
                width: 100%;
            }

            .bh040-section-title {
                font-size: 24px;
            }

            .bh040-cta-title {
                font-size: 22px;
            }

            .bh040-feature-list,
            .bh040-info-cards,
            .bh040-req-grid {
                grid-template-columns: 1fr;
            }
        }

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

        .bh040-fade-in {
            animation: fadeInUp 0.6s ease-out;
        }