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

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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f5f7fa;
        }

        /* 导航栏样式 */
        .fbcw-header-wrapper {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }

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

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

        .fbcw-logo-section img {
            height: 40px;
            width: auto;
        }

        .fbcw-brand-name {
            color: #fff;
            font-size: 20px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

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

        .fbcw-nav-link {
            color: #fff;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 0;
            border-bottom: 2px solid transparent;
        }

        .fbcw-nav-link:hover {
            border-bottom-color: #fff;
            opacity: 0.8;
        }

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

        .fbcw-hero-content {
            max-width: 900px;
            margin: 0 auto;
        }

        .fbcw-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }

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

        .fbcw-cta-button-group {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .fbcw-cta-button-primary {
            background-color: #fff;
            color: #667eea;
            padding: 15px 40px;
            font-size: 16px;
            font-weight: 700;
            border: none;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .fbcw-cta-button-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .fbcw-cta-button-secondary {
            background-color: transparent;
            color: #fff;
            padding: 15px 40px;
            font-size: 16px;
            font-weight: 700;
            border: 2px solid #fff;
            border-radius: 50px;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .fbcw-cta-button-secondary:hover {
            background-color: #fff;
            color: #667eea;
        }

        /* 主容器 */
        .fbcw-main-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 60px 20px;
        }

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

        .fbcw-section-title {
            font-size: 36px;
            font-weight: 800;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

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

        .fbcw-feature-card {
            background: #fff;
            padding: 40px 30px;
            border-radius: 10px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-top: 4px solid #667eea;
        }

        .fbcw-feature-card:hover {
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
            transform: translateY(-5px);
        }

        .fbcw-feature-icon {
            font-size: 40px;
            margin-bottom: 20px;
        }

        .fbcw-feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 15px;
            color: #333;
        }

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

        /* 兼容性区 */
        .fbcw-compatibility-section {
            background: #fff;
            padding: 60px 40px;
            border-radius: 10px;
            margin-bottom: 80px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

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

        .fbcw-compat-list {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 20px;
            margin-bottom: 30px;
        }

        .fbcw-compat-item {
            display: flex;
            align-items: center;
            gap: 12px;
            padding: 15px;
            background: #f5f7fa;
            border-radius: 8px;
            font-weight: 500;
            color: #333;
        }

        .fbcw-compat-check {
            color: #667eea;
            font-size: 20px;
            font-weight: bold;
        }

        /* 安装说明区 */
        .fbcw-installation-section {
            margin-bottom: 80px;
        }

        .fbcw-steps-container {
            background: #fff;
            padding: 50px 40px;
            border-radius: 10px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .fbcw-step-item {
            display: flex;
            gap: 30px;
            margin-bottom: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #eee;
        }

        .fbcw-step-item:last-child {
            border-bottom: none;
            margin-bottom: 0;
            padding-bottom: 0;
        }

        .fbcw-step-number {
            min-width: 50px;
            height: 50px;
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            font-weight: 700;
            flex-shrink: 0;
        }

        .fbcw-step-content h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #333;
        }

        .fbcw-step-content p {
            color: #666;
            line-height: 1.8;
            font-size: 14px;
        }

        .fbcw-step-code {
            background: #f5f7fa;
            padding: 15px;
            border-radius: 5px;
            font-family: 'Courier New', monospace;
            margin-top: 10px;
            overflow-x: auto;
            color: #333;
            font-size: 13px;
        }

        /* 关键词优化文本 */
        .fbcw-keyword-highlight {
            color: #667eea;
            font-weight: 600;
        }

        /* 配置选项区 */
        .fbcw-config-section {
            background: #fff;
            padding: 60px 40px;
            border-radius: 10px;
            margin-bottom: 80px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .fbcw-config-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 25px;
            margin-top: 30px;
        }

        .fbcw-config-box {
            padding: 25px;
            background: #f5f7fa;
            border-radius: 8px;
            border-left: 4px solid #667eea;
        }

        .fbcw-config-box h4 {
            font-size: 16px;
            margin-bottom: 12px;
            color: #333;
        }

        .fbcw-config-box p {
            font-size: 13px;
            color: #666;
            line-height: 1.8;
        }

        /* 常见问题区 */
        .fbcw-faq-section {
            background: #fff;
            padding: 60px 40px;
            border-radius: 10px;
            margin-bottom: 80px;
            box-shadow: 0 2px 15px rgba(0, 0, 0, 0.08);
        }

        .fbcw-faq-item {
            margin-bottom: 25px;
            padding-bottom: 25px;
            border-bottom: 1px solid #eee;
        }

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

        .fbcw-faq-question {
            font-size: 16px;
            font-weight: 700;
            color: #333;
            margin-bottom: 10px;
            cursor: pointer;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .fbcw-faq-icon {
            color: #667eea;
            font-size: 18px;
        }

        .fbcw-faq-answer {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
            margin-left: 28px;
        }

        /* 底部CTA区 */
        .fbcw-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: #fff;
            padding: 80px 20px;
            text-align: center;
            border-radius: 10px;
            margin-bottom: 80px;
        }

        .fbcw-cta-section-title {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .fbcw-cta-section-desc {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
        }

        /* 页脚 */
        .fbcw-footer {
            background-color: #2c3e50;
            color: #ecf0f1;
            padding: 60px 20px 40px;
        }

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

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

        .fbcw-footer-column h4 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #fff;
        }

        .fbcw-footer-link {
            color: #bdc3c7;
            text-decoration: none;
            font-size: 14px;
            line-height: 2;
            transition: color 0.3s ease;
        }

        .fbcw-footer-link:hover {
            color: #fff;
        }

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

        /* 响应式设计 */
        @media (max-width: 768px) {
            .fbcw-navbar-container {
                flex-direction: column;
                gap: 15px;
            }

            .fbcw-nav-menu {
                flex-direction: column;
                gap: 15px;
                width: 100%;
            }

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

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

            .fbcw-cta-button-group {
                flex-direction: column;
            }

            .fbcw-cta-button-primary,
            .fbcw-cta-button-secondary {
                width: 100%;
            }

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

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

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

            .fbcw-step-item {
                flex-direction: column;
                gap: 15px;
            }

            .fbcw-config-grid {
                grid-template-columns: 1fr;
            }

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

            .fbcw-main-container {
                padding: 40px 15px;
            }

            .fbcw-hero-section {
                padding: 50px 15px;
            }

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

        @media (max-width: 480px) {
            .fbcw-hero-title {
                font-size: 24px;
            }

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

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

            .fbcw-feature-card {
                padding: 25px 20px;
            }

            .fbcw-compatibility-section,
            .fbcw-steps-container,
            .fbcw-config-section,
            .fbcw-faq-section {
                padding: 40px 20px;
            }
        }