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

        html, body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', Arial, sans-serif;
            color: #202124;
            background-color: #ffffff;
            line-height: 1.6;
        }

        /* 导航栏样式 */
        .sw9d9n-navbar-wrapper {
            background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            position: sticky;
            top: 0;
            z-index: 1000;
            transition: all 0.3s ease;
        }

        .sw9d9n-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }

        .sw9d9n-logo-section {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 22px;
            font-weight: 700;
            color: #1f2937;
            text-decoration: none;
        }

        .sw9d9n-logo-image {
            width: 40px;
            height: 40px;
            object-fit: contain;
        }

        .sw9d9n-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .sw9d9n-nav-link {
            color: #202124;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            padding: 8px 0;
            border-bottom: 3px solid transparent;
            transition: all 0.3s ease;
            cursor: pointer;
        }

        .sw9d9n-nav-link:hover {
            color: #1f76d2;
            border-bottom-color: #1f76d2;
        }

        /* 响应式导航 */
        @media (max-width: 768px) {
            .sw9d9n-nav-menu {
                display: none;
            }

            .sw9d9n-navbar-container {
                height: 60px;
            }
        }

        /* 英雄区域 */
        .sw9d9n-hero-section {
            background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
            color: #ffffff;
            padding: 100px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .sw9d9n-hero-background {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            bottom: 0;
            background: radial-gradient(circle at 20% 50%, rgba(31, 118, 210, 0.1) 0%, transparent 50%),
                        radial-gradient(circle at 80% 80%, rgba(66, 133, 244, 0.1) 0%, transparent 50%);
            z-index: 1;
        }

        .sw9d9n-hero-content {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            z-index: 2;
        }

        .sw9d9n-hero-title {
            font-size: 48px;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            letter-spacing: -0.5px;
        }

        .sw9d9n-hero-subtitle {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.5;
        }

        .sw9d9n-cta-button-primary {
            display: inline-block;
            background: linear-gradient(135deg, #1f76d2 0%, #1565c0 100%);
            color: white;
            padding: 16px 40px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 12px rgba(31, 118, 210, 0.3);
            margin-right: 15px;
        }

        .sw9d9n-cta-button-primary:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(31, 118, 210, 0.4);
            background: linear-gradient(135deg, #1565c0 0%, #0d47a1 100%);
        }

        .sw9d9n-cta-button-secondary {
            display: inline-block;
            background: rgba(255, 255, 255, 0.15);
            color: white;
            padding: 16px 40px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 16px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: 2px solid rgba(255, 255, 255, 0.3);
            cursor: pointer;
        }

        .sw9d9n-cta-button-secondary:hover {
            background: rgba(255, 255, 255, 0.25);
            border-color: rgba(255, 255, 255, 0.5);
        }

        /* 特性区域 */
        .sw9d9n-features-section {
            padding: 80px 20px;
            background: #f8f9fa;
        }

        .sw9d9n-section-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .sw9d9n-section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #1f2937;
        }

        .sw9d9n-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
        }

        .sw9d9n-feature-card {
            background: white;
            padding: 40px;
            border-radius: 12px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            text-align: center;
            border-top: 4px solid #1f76d2;
        }

        .sw9d9n-feature-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
        }

        .sw9d9n-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .sw9d9n-feature-title {
            font-size: 18px;
            font-weight: 700;
            margin-bottom: 12px;
            color: #1f2937;
        }

        .sw9d9n-feature-description {
            font-size: 14px;
            color: #5f6368;
            line-height: 1.6;
        }

        /* 内容区域 */
        .sw9d9n-content-section {
            padding: 80px 20px;
            background: white;
        }

        .sw9d9n-content-wrapper {
            max-width: 900px;
            margin: 0 auto;
        }

        .sw9d9n-content-intro {
            font-size: 16px;
            line-height: 1.8;
            color: #3f4146;
            margin-bottom: 30px;
        }

        .sw9d9n-content-highlight {
            background: #e8f0fe;
            padding: 30px;
            border-left: 4px solid #1f76d2;
            border-radius: 8px;
            margin: 30px 0;
        }

        .sw9d9n-content-highlight h3 {
            color: #1f76d2;
            margin-bottom: 10px;
            font-size: 18px;
        }

        .sw9d9n-content-highlight p {
            color: #202124;
            font-size: 14px;
            line-height: 1.6;
        }

        .sw9d9n-content-list {
            margin: 30px 0;
            color: #3f4146;
        }

        .sw9d9n-content-list li {
            margin-bottom: 15px;
            padding-left: 25px;
            position: relative;
            font-size: 15px;
        }

        .sw9d9n-content-list li:before {
            content: "✓";
            position: absolute;
            left: 0;
            color: #1f76d2;
            font-weight: bold;
            font-size: 18px;
        }

        /* CTA区域 */
        .sw9d9n-cta-section {
            background: linear-gradient(135deg, #1f76d2 0%, #1565c0 100%);
            color: white;
            padding: 60px 20px;
            text-align: center;
        }

        .sw9d9n-cta-title {
            font-size: 32px;
            font-weight: 700;
            margin-bottom: 20px;
        }

        .sw9d9n-cta-description {
            font-size: 16px;
            margin-bottom: 30px;
            opacity: 0.95;
        }

        .sw9d9n-cta-buttons {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .sw9d9n-cta-button-white {
            display: inline-block;
            background: white;
            color: #1f76d2;
            padding: 14px 32px;
            border-radius: 8px;
            text-decoration: none;
            font-size: 15px;
            font-weight: 600;
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }

        .sw9d9n-cta-button-white:hover {
            background: #f8f9fa;
            transform: translateY(-2px);
        }

        /* 页脚 */
        .sw9d9n-footer-wrapper {
            background: #202124;
            color: #bdc1c6;
            padding: 50px 20px 30px;
        }

        .sw9d9n-footer-container {
            max-width: 1200px;
            margin: 0 auto;
        }

        .sw9d9n-footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .sw9d9n-footer-column h4 {
            color: #e8eaed;
            font-size: 14px;
            font-weight: 600;
            margin-bottom: 15px;
        }

        .sw9d9n-footer-links {
            display: flex;
            flex-direction: column;
            gap: 10px;
            list-style: none;
        }

        .sw9d9n-footer-link {
            color: #bdc1c6;
            text-decoration: none;
            font-size: 13px;
            transition: color 0.3s ease;
        }

        .sw9d9n-footer-link:hover {
            color: #e8eaed;
        }

        .sw9d9n-footer-bottom {
            border-top: 1px solid #3c4043;
            padding-top: 30px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 20px;
            font-size: 13px;
        }

        .sw9d9n-footer-bottom-links {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .sw9d9n-footer-bottom-link {
            color: #bdc1c6;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .sw9d9n-footer-bottom-link:hover {
            color: #e8eaed;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .sw9d9n-hero-title {
                font-size: 32px;
            }

            .sw9d9n-hero-subtitle {
                font-size: 16px;
            }

            .sw9d9n-section-title {
                font-size: 28px;
            }

            .sw9d9n-cta-buttons {
                flex-direction: column;
                gap: 10px;
            }

            .sw9d9n-cta-button-primary,
            .sw9d9n-cta-button-secondary {
                width: 100%;
                margin-right: 0;
            }

            .sw9d9n-footer-bottom {
                flex-direction: column;
                align-items: flex-start;
            }

            .sw9d9n-footer-bottom-links {
                flex-direction: column;
                gap: 15px;
            }
        }

        /* 动画 */
        @keyframes slideInUp {
            from {
                opacity: 0;
                transform: translateY(20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        .sw9d9n-feature-card {
            animation: slideInUp 0.6s ease-out;
        }