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

        html {
            scroll-behavior: smooth;
        }

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f8f9fa;
        }

        /* 导航栏样式 */
        .fbcw-navbar-wrapper {
            background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
            box-shadow: 0 2px 8px 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;
            text-decoration: none;
        }

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

        .fbcw-logo-text {
            color: white;
            font-size: 18px;
            font-weight: 700;
            letter-spacing: 0.5px;
        }

        .fbcw-nav-menu {
            display: flex;
            gap: 0;
            list-style: none;
            align-items: center;
        }

        .fbcw-nav-link {
            color: white;
            text-decoration: none;
            padding: 12px 18px;
            font-size: 14px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .fbcw-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            border-radius: 4px;
        }

        .fbcw-nav-link::after {
            content: '';
            position: absolute;
            bottom: 8px;
            left: 18px;
            right: 18px;
            height: 2px;
            background-color: #ffb300;
            transform: scaleX(0);
            transition: transform 0.3s ease;
        }

        .fbcw-nav-link:hover::after {
            transform: scaleX(1);
        }

        /* 主轮播区 */
        .fbcw-hero-section {
            background: linear-gradient(135deg, #0066cc 0%, #0052a3 50%, #003d82 100%);
            color: white;
            padding: 100px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .fbcw-hero-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1200 600"><defs><pattern id="grid" width="40" height="40" patternUnits="userSpaceOnUse"><path d="M 40 0 L 0 0 0 40" fill="none" stroke="rgba(255,255,255,0.1)" stroke-width="1"/></pattern></defs><rect width="1200" height="600" fill="url(%23grid)"/></svg>');
            opacity: 0.5;
        }

        .fbcw-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 1;
        }

        .fbcw-hero-title {
            font-size: 48px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .fbcw-hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
            line-height: 1.5;
        }

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

        .fbcw-btn-primary {
            background-color: #ffb300;
            color: #0066cc;
            padding: 15px 40px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            border: none;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: 0 4px 12px rgba(255, 179, 0, 0.3);
        }

        .fbcw-btn-primary:hover {
            background-color: #ffb300;
            transform: translateY(-3px);
            box-shadow: 0 6px 16px rgba(255, 179, 0, 0.4);
        }

        .fbcw-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 15px 40px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 700;
            font-size: 16px;
            border: 2px solid white;
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .fbcw-btn-secondary:hover {
            background-color: white;
            color: #0066cc;
            transform: translateY(-3px);
        }

        /* 特性区 */
        .fbcw-features-section {
            max-width: 1200px;
            margin: -60px auto 80px;
            padding: 0 20px;
            position: relative;
            z-index: 10;
        }

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

        .fbcw-feature-card {
            background: white;
            padding: 40px 30px;
            border-radius: 10px;
            box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-top: 4px solid #0066cc;
        }

        .fbcw-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
        }

        .fbcw-feature-icon {
            font-size: 48px;
            margin-bottom: 15px;
            display: block;
        }

        .fbcw-feature-title {
            font-size: 20px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #0066cc;
        }

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

        /* 介绍区 */
        .fbcw-intro-section {
            background-color: white;
            padding: 80px 20px;
            margin-bottom: 60px;
        }

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

        .fbcw-intro-header {
            text-align: center;
            margin-bottom: 60px;
        }

        .fbcw-section-title {
            font-size: 36px;
            font-weight: 700;
            color: #0066cc;
            margin-bottom: 15px;
        }

        .fbcw-section-subtitle {
            font-size: 16px;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }

        .fbcw-intro-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }

        .fbcw-intro-text {
            font-size: 15px;
            line-height: 1.8;
            color: #555;
        }

        .fbcw-intro-text h3 {
            font-size: 20px;
            color: #0066cc;
            margin: 25px 0 15px 0;
        }

        .fbcw-intro-list {
            list-style: none;
            margin: 20px 0;
        }

        .fbcw-intro-list li {
            padding: 10px 0;
            padding-left: 30px;
            position: relative;
            color: #555;
        }

        .fbcw-intro-list li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #0066cc;
            font-weight: 700;
            font-size: 18px;
        }

        .fbcw-intro-image {
            background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
            border-radius: 10px;
            padding: 40px;
            text-align: center;
            color: white;
            font-size: 120px;
            min-height: 400px;
            display: flex;
            align-items: center;
            justify-content: center;
        }

        /* 下载区 */
        .fbcw-download-section {
            background: linear-gradient(135deg, #f0f4ff 0%, #f8faff 100%);
            padding: 80px 20px;
            margin-bottom: 60px;
        }

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

        .fbcw-download-header {
            text-align: center;
            margin-bottom: 50px;
        }

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

        .fbcw-download-card {
            background: white;
            padding: 35px 25px;
            border-radius: 10px;
            text-align: center;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
        }

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

        .fbcw-download-icon {
            font-size: 60px;
            margin-bottom: 20px;
            display: block;
        }

        .fbcw-download-name {
            font-size: 18px;
            font-weight: 700;
            color: #0066cc;
            margin-bottom: 10px;
        }

        .fbcw-download-desc {
            font-size: 13px;
            color: #999;
            margin-bottom: 20px;
        }

        .fbcw-download-btn {
            display: inline-block;
            background-color: #0066cc;
            color: white;
            padding: 12px 30px;
            border-radius: 6px;
            text-decoration: none;
            font-weight: 600;
            font-size: 14px;
            transition: all 0.3s ease;
        }

        .fbcw-download-btn:hover {
            background-color: #0052a3;
            transform: translateY(-2px);
        }

        /* CTA区 */
        .fbcw-cta-section {
            background: linear-gradient(135deg, #0066cc 0%, #0052a3 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
        }

        .fbcw-cta-container {
            max-width: 800px;
            margin: 0 auto;
        }

        .fbcw-cta-title {
            font-size: 40px;
            font-weight: 700;
            margin-bottom: 20px;
            line-height: 1.3;
        }

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

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

        /* 页脚 */
        .fbcw-footer-section {
            background-color: #1a1a2e;
            color: #aaa;
            padding: 50px 20px 30px;
        }

        .fbcw-footer-container {
            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-col h4 {
            color: white;
            font-size: 16px;
            margin-bottom: 20px;
            font-weight: 700;
        }

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

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

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

        .fbcw-footer-links a:hover {
            color: #ffb300;
        }

        .fbcw-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 30px;
            text-align: center;
            font-size: 13px;
            color: #888;
        }

        .fbcw-footer-bottom p {
            margin: 5px 0;
        }

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

            .fbcw-nav-menu {
                flex-wrap: wrap;
                justify-content: center;
                gap: 5px;
            }

            .fbcw-nav-link {
                padding: 8px 12px;
                font-size: 13px;
            }

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

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

            .fbcw-hero-buttons {
                flex-direction: column;
                align-items: center;
            }

            .fbcw-btn-primary,
            .fbcw-btn-secondary {
                width: 100%;
                max-width: 300px;
            }

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

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

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

            .fbcw-features-section {
                margin-top: 40px;
            }
        }

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

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

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

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

            .fbcw-download-card {
                padding: 25px 15px;
            }
        }