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

        html, 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 */
        .fbcw-navbar-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;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .fbcw-logo-section {
            display: flex;
            align-items: center;
            gap: 15px;
            text-decoration: none;
        }

        .fbcw-logo-section img {
            height: 45px;
            width: auto;
        }

        .fbcw-logo-text {
            color: white;
            font-size: 22px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

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

        .fbcw-nav-link {
            color: white;
            text-decoration: none;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 12px;
            border-radius: 4px;
        }

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

        /* 主内容区 */
        .fbcw-hero-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
        }

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

        .fbcw-hero-badge {
            display: inline-block;
            background-color: rgba(255, 255, 255, 0.2);
            color: white;
            padding: 8px 16px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: 600;
            margin-bottom: 20px;
            text-transform: uppercase;
            letter-spacing: 1px;
        }

        .fbcw-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            letter-spacing: -1px;
            line-height: 1.2;
        }

        .fbcw-hero-subtitle {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.8;
        }

        .fbcw-hero-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .fbcw-btn-primary {
            background-color: #fff;
            color: #667eea;
            padding: 14px 40px;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
            text-decoration: none;
            display: inline-block;
        }

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

        .fbcw-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 14px 40px;
            border: 2px solid white;
            border-radius: 6px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .fbcw-btn-secondary:hover {
            background-color: white;
            color: #667eea;
            transform: translateY(-3px);
        }

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

        /* 版本特性部分 */
        .fbcw-features-section {
            margin-bottom: 80px;
        }

        .fbcw-section-title {
            font-size: 36px;
            font-weight: 800;
            margin-bottom: 50px;
            text-align: center;
            color: #1a1a1a;
            position: relative;
            padding-bottom: 20px;
        }

        .fbcw-section-title::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: linear-gradient(90deg, #667eea, #764ba2);
            border-radius: 2px;
        }

        .fbcw-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 60px;
        }

        .fbcw-feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-top: 4px solid #667eea;
        }

        .fbcw-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 25px rgba(102, 126, 234, 0.15);
        }

        .fbcw-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
            display: block;
        }

        .fbcw-feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #1a1a1a;
        }

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

        /* 更新日志部分 */
        .fbcw-changelog-section {
            margin-bottom: 80px;
            background: white;
            padding: 60px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
        }

        .fbcw-changelog-title {
            font-size: 28px;
            font-weight: 700;
            margin-bottom: 40px;
            color: #1a1a1a;
        }

        .fbcw-version-item {
            margin-bottom: 40px;
            padding-bottom: 40px;
            border-bottom: 1px solid #eee;
        }

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

        .fbcw-version-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
        }

        .fbcw-version-number {
            font-size: 18px;
            font-weight: 700;
            color: #667eea;
            background-color: #f0f4ff;
            padding: 6px 14px;
            border-radius: 20px;
            display: inline-block;
        }

        .fbcw-version-date {
            font-size: 13px;
            color: #999;
            font-weight: 500;
        }

        .fbcw-changelog-list {
            list-style: none;
            padding-left: 0;
        }

        .fbcw-changelog-item {
            padding-left: 24px;
            margin-bottom: 12px;
            position: relative;
            font-size: 14px;
            color: #555;
            line-height: 1.7;
        }

        .fbcw-changelog-item::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
            font-size: 16px;
        }

        .fbcw-changelog-item.fbcw-bugfix::before {
            content: '🔧';
        }

        .fbcw-changelog-item.fbcw-feature::before {
            content: '⭐';
        }

        /* 系统需求部分 */
        .fbcw-requirements-section {
            margin-bottom: 80px;
        }

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

        .fbcw-requirement-box {
            background: white;
            padding: 30px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
        }

        .fbcw-requirement-title {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 15px;
            color: #1a1a1a;
            display: flex;
            align-items: center;
            gap: 10px;
        }

        .fbcw-requirement-content {
            font-size: 13px;
            color: #666;
            line-height: 1.8;
        }

        /* CTA部分 */
        .fbcw-cta-section {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 20px;
            margin-bottom: 60px;
            border-radius: 8px;
            text-align: center;
        }

        .fbcw-cta-content {
            max-width: 700px;
            margin: 0 auto;
        }

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

        .fbcw-cta-text {
            font-size: 16px;
            margin-bottom: 40px;
            opacity: 0.95;
            line-height: 1.8;
        }

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

        /* 对比表格 */
        .fbcw-comparison-section {
            margin-bottom: 80px;
            background: white;
            padding: 60px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
        }

        .fbcw-comparison-table {
            width: 100%;
            border-collapse: collapse;
            font-size: 14px;
        }

        .fbcw-comparison-table th {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 16px;
            text-align: left;
            font-weight: 700;
        }

        .fbcw-comparison-table td {
            padding: 14px 16px;
            border-bottom: 1px solid #eee;
        }

        .fbcw-comparison-table tr:hover {
            background-color: #f8f9fa;
        }

        .fbcw-comparison-table tr:nth-child(even) {
            background-color: #f8f9fa;
        }

        /* 页脚 */
        .fbcw-footer-wrapper {
            background-color: #1a1a1a;
            color: white;
            padding: 60px 20px 30px;
            margin-top: 100px;
        }

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

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

        .fbcw-footer-column h3 {
            font-size: 16px;
            font-weight: 700;
            margin-bottom: 20px;
            color: #667eea;
        }

        .fbcw-footer-column ul {
            list-style: none;
        }

        .fbcw-footer-column ul li {
            margin-bottom: 12px;
        }

        .fbcw-footer-column ul li a {
            color: #ccc;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s ease;
        }

        .fbcw-footer-column ul li a:hover {
            color: #667eea;
        }

        .fbcw-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
            color: #999;
        }

        /* FAQ部分 */
        .fbcw-faq-section {
            margin-bottom: 80px;
            background: white;
            padding: 60px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
        }

        .fbcw-faq-item {
            margin-bottom: 20px;
            border: 1px solid #eee;
            border-radius: 6px;
            overflow: hidden;
        }

        .fbcw-faq-question {
            background-color: #f8f9fa;
            padding: 20px;
            cursor: pointer;
            font-weight: 600;
            color: #1a1a1a;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s ease;
        }

        .fbcw-faq-question:hover {
            background-color: #f0f4ff;
        }

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

        .fbcw-faq-answer {
            padding: 20px;
            color: #666;
            font-size: 14px;
            line-height: 1.8;
            display: none;
            background-color: white;
        }

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

        /* 响应式设计 */
        @media (max-width: 768px) {
            .fbcw-navbar-container {
                flex-direction: column;
                height: auto;
                padding: 15px 20px;
                gap: 15px;
            }

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

            .fbcw-nav-link {
                display: block;
                text-align: center;
            }

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

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

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

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

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

            .fbcw-hero-buttons,
            .fbcw-cta-buttons {
                flex-direction: column;
            }

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

            .fbcw-changelog-section,
            .fbcw-comparison-section,
            .fbcw-faq-section {
                padding: 30px 20px;
            }

            .fbcw-version-header {
                flex-direction: column;
                align-items: flex-start;
            }

            .fbcw-version-date {
                margin-top: 10px;
            }

            .fbcw-comparison-table {
                font-size: 12px;
            }

            .fbcw-comparison-table th,
            .fbcw-comparison-table td {
                padding: 10px;
            }
        }

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

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

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

            .fbcw-nav-menu {
                display: none;
            }

            .fbcw-changelog-section,
            .fbcw-comparison-section,
            .fbcw-faq-section {
                padding: 20px;
            }
        }