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

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

        /* 导航栏样式 */
        .bh040-navbar {
            background: linear-gradient(135deg, #0088cc 0%, #006ba3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
        }

        .bh040-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .bh040-logo-wrapper {
            display: flex;
            align-items: center;
            gap: 12px;
        }

        .bh040-logo-wrapper img {
            height: 45px;
            width: auto;
        }

        .bh040-logo-text {
            font-size: 20px;
            font-weight: 700;
            color: white;
            text-decoration: none;
        }

        .bh040-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .bh040-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: opacity 0.3s ease;
            display: inline-block;
        }

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

        /* 主容器 */
        .bh040-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* Hero区域 */
        .bh040-hero {
            background: linear-gradient(135deg, #0088cc 0%, #00a8e8 100%);
            padding: 80px 20px;
            text-align: center;
            color: white;
        }

        .bh040-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .bh040-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
        }

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

        .bh040-cta-button {
            display: inline-block;
            background: white;
            color: #0088cc;
            padding: 16px 40px;
            border-radius: 50px;
            font-size: 18px;
            font-weight: 700;
            text-decoration: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            margin: 10px;
            border: none;
            cursor: pointer;
        }

        .bh040-cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
        }

        .bh040-cta-secondary {
            background: rgba(255, 255, 255, 0.2);
            color: white;
            border: 2px solid white;
        }

        .bh040-cta-secondary:hover {
            background: rgba(255, 255, 255, 0.3);
        }

        /* 特性区域 */
        .bh040-features {
            padding: 80px 20px;
            background: #f8f9fa;
        }

        .bh040-section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .bh040-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .bh040-feature-card {
            background: white;
            padding: 30px;
            border-radius: 10px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            text-align: center;
        }

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

        .bh040-feature-icon {
            font-size: 48px;
            margin-bottom: 20px;
        }

        .bh040-feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 15px;
            color: #333;
        }

        .bh040-feature-desc {
            font-size: 15px;
            color: #666;
            line-height: 1.6;
        }

        /* 兼容性区域 */
        .bh040-compatibility {
            padding: 80px 20px;
            background: white;
        }

        .bh040-compat-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
            gap: 20px;
            margin-bottom: 40px;
        }

        .bh040-compat-item {
            background: #f0f4ff;
            padding: 25px;
            border-radius: 8px;
            text-align: center;
            border-left: 4px solid #0088cc;
        }

        .bh040-compat-label {
            font-size: 14px;
            color: #666;
            margin-bottom: 10px;
        }

        .bh040-compat-version {
            font-size: 18px;
            font-weight: 700;
            color: #0088cc;
        }

        /* 安装指南区域 */
        .bh040-guide {
            padding: 80px 20px;
            background: #f8f9fa;
        }

        .bh040-steps {
            max-width: 900px;
            margin: 0 auto;
        }

        .bh040-step {
            background: white;
            padding: 30px;
            margin-bottom: 20px;
            border-radius: 8px;
            border-left: 5px solid #0088cc;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }

        .bh040-step-number {
            display: inline-block;
            width: 40px;
            height: 40px;
            background: #0088cc;
            color: white;
            border-radius: 50%;
            text-align: center;
            line-height: 40px;
            font-weight: 700;
            margin-right: 15px;
            margin-bottom: 15px;
        }

        .bh040-step-title {
            font-size: 18px;
            font-weight: 700;
            color: #333;
            display: inline-block;
        }

        .bh040-step-content {
            margin-top: 15px;
            color: #666;
            font-size: 15px;
            line-height: 1.8;
            margin-left: 55px;
        }

        /* FAQ区域 */
        .bh040-faq {
            padding: 80px 20px;
            background: white;
        }

        .bh040-faq-list {
            max-width: 900px;
            margin: 0 auto;
        }

        .bh040-faq-item {
            margin-bottom: 20px;
            border-bottom: 1px solid #eee;
        }

        .bh040-faq-question {
            padding: 20px;
            background: #f8f9fa;
            cursor: pointer;
            font-weight: 600;
            color: #333;
            border-radius: 5px;
            transition: background 0.3s ease;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .bh040-faq-question:hover {
            background: #eff2ff;
        }

        .bh040-faq-toggle {
            font-size: 20px;
            color: #0088cc;
        }

        .bh040-faq-answer {
            padding: 20px;
            color: #666;
            font-size: 15px;
            line-height: 1.8;
            display: none;
        }

        .bh040-faq-answer.bh040-active {
            display: block;
        }

        /* 页脚 */
        .bh040-footer {
            background: #1a1a1a;
            color: white;
            padding: 50px 20px 20px;
        }

        .bh040-footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }

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

        .bh040-footer-section h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #0088cc;
        }

        .bh040-footer-links {
            list-style: none;
        }

        .bh040-footer-links li {
            margin-bottom: 12px;
        }

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

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

        .bh040-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            text-align: center;
            color: #999;
            font-size: 14px;
        }

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

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

            .bh040-section-title {
                font-size: 28px;
            }

            .bh040-navbar-menu {
                gap: 15px;
                font-size: 13px;
            }

            .bh040-nav-menu {
                gap: 20px;
            }

            .bh040-features-grid {
                grid-template-columns: 1fr;
            }

            .bh040-compat-grid {
                grid-template-columns: repeat(2, 1fr);
            }

            .bh040-hero {
                padding: 50px 20px;
            }

            .bh040-features,
            .bh040-compatibility,
            .bh040-guide,
            .bh040-faq {
                padding: 50px 20px;
            }
        }

        @media (max-width: 480px) {
            .bh040-navbar-container {
                height: auto;
                flex-direction: column;
                padding: 15px 20px;
            }

            .bh040-nav-menu {
                flex-direction: column;
                gap: 10px;
                width: 100%;
            }

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

            .bh040-hero-subtitle {
                font-size: 14px;
            }

            .bh040-cta-button {
                display: block;
                margin: 10px 0;
            }

            .bh040-compat-grid {
                grid-template-columns: 1fr;
            }

            .bh040-footer-content {
                grid-template-columns: 1fr;
                gap: 30px;
            }
        }

        /* 额外优化 */
        .bh040-highlight {
            color: #0088cc;
            font-weight: 700;
        }

        .bh040-badge {
            display: inline-block;
            background: #0088cc;
            color: white;
            padding: 6px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 700;
            margin: 5px 5px 5px 0;
        }

        .bh040-content-box {
            background: white;
            padding: 30px;
            border-radius: 8px;
            margin: 30px 0;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
        }