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

        body {
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
            line-height: 1.6;
            color: #333;
            background-color: #f9f9f9;
        }

        /* 导航栏样式 */
        .yewq9-navbar {
            background: linear-gradient(135deg, #0066cc 0%, #004aa3 100%);
            padding: 0;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
        }

        .yewq9-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 0 20px;
            height: 70px;
        }

        .yewq9-logo-section {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .yewq9-logo-img {
            height: 50px;
            width: auto;
        }

        .yewq9-brand-name {
            color: white;
            font-size: 22px;
            font-weight: bold;
            text-decoration: none;
        }

        .yewq9-nav-menu {
            display: flex;
            gap: 30px;
            align-items: center;
            list-style: none;
        }

        .yewq9-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            padding: 8px 12px;
            border-radius: 4px;
        }

        .yewq9-nav-link:hover {
            background-color: rgba(255, 255, 255, 0.2);
            transform: translateY(-2px);
        }

        /* 主容器 */
        .yewq9-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .yewq9-hero {
            background: linear-gradient(135deg, #0066cc 0%, #004aa3 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            position: relative;
            overflow: hidden;
        }

        .yewq9-hero::before {
            content: '';
            position: absolute;
            top: -50%;
            right: -10%;
            width: 500px;
            height: 500px;
            background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
            border-radius: 50%;
        }

        .yewq9-hero-content {
            position: relative;
            z-index: 1;
        }

        .yewq9-hero-title {
            font-size: 48px;
            font-weight: bold;
            margin-bottom: 20px;
            line-height: 1.3;
        }

        .yewq9-hero-subtitle {
            font-size: 20px;
            margin-bottom: 40px;
            opacity: 0.95;
            font-weight: 300;
        }

        .yewq9-cta-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .yewq9-btn-primary {
            background-color: #ff6b35;
            color: white;
            padding: 16px 40px;
            border: none;
            border-radius: 6px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
        }

        .yewq9-btn-primary:hover {
            background-color: #ff5722;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
        }

        .yewq9-btn-secondary {
            background-color: transparent;
            color: white;
            padding: 16px 40px;
            border: 2px solid white;
            border-radius: 6px;
            font-size: 16px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .yewq9-btn-secondary:hover {
            background-color: rgba(255, 255, 255, 0.1);
            transform: translateY(-3px);
        }

        /* 功能特性区域 */
        .yewq9-features {
            padding: 80px 20px;
            background-color: white;
        }

        .yewq9-section-title {
            font-size: 36px;
            font-weight: bold;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .yewq9-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .yewq9-feature-card {
            background: #f5f5f5;
            padding: 30px;
            border-radius: 8px;
            transition: all 0.3s ease;
            border-left: 4px solid #0066cc;
        }

        .yewq9-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 10px 30px rgba(0, 102, 204, 0.1);
            background-color: white;
        }

        .yewq9-feature-icon {
            font-size: 40px;
            margin-bottom: 15px;
        }

        .yewq9-feature-title {
            font-size: 20px;
            font-weight: bold;
            margin-bottom: 12px;
            color: #0066cc;
        }

        .yewq9-feature-desc {
            font-size: 14px;
            color: #666;
            line-height: 1.8;
        }

        /* 版本信息区域 */
        .yewq9-versions {
            padding: 80px 20px;
            background-color: #f9f9f9;
        }

        .yewq9-version-item {
            background: white;
            padding: 25px;
            margin-bottom: 20px;
            border-radius: 8px;
            border-left: 4px solid #ff6b35;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
            transition: all 0.3s ease;
        }

        .yewq9-version-item:hover {
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .yewq9-version-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 15px;
            flex-wrap: wrap;
            gap: 10px;
        }

        .yewq9-version-number {
            font-size: 18px;
            font-weight: bold;
            color: #0066cc;
        }

        .yewq9-version-date {
            font-size: 14px;
            color: #999;
        }

        .yewq9-version-badge {
            background-color: #ff6b35;
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 12px;
            font-weight: bold;
        }

        .yewq9-version-changes {
            list-style: none;
            margin-left: 0;
        }

        .yewq9-version-changes li {
            padding: 8px 0;
            color: #555;
            border-bottom: 1px solid #eee;
            position: relative;
            padding-left: 20px;
        }

        .yewq9-version-changes li:last-child {
            border-bottom: none;
        }

        .yewq9-version-changes li::before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #0066cc;
            font-weight: bold;
        }

        /* 下载区域 */
        .yewq9-download-section {
            padding: 80px 20px;
            background: linear-gradient(135deg, #0066cc 0%, #004aa3 100%);
            color: white;
            text-align: center;
        }

        .yewq9-download-title {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 20px;
        }

        .yewq9-download-desc {
            font-size: 18px;
            margin-bottom: 40px;
            opacity: 0.95;
            max-width: 600px;
            margin-left: auto;
            margin-right: auto;
        }

        .yewq9-platform-buttons {
            display: flex;
            gap: 20px;
            justify-content: center;
            flex-wrap: wrap;
            margin-bottom: 30px;
        }

        .yewq9-platform-btn {
            background-color: #ff6b35;
            color: white;
            padding: 14px 30px;
            border: none;
            border-radius: 6px;
            font-size: 15px;
            font-weight: bold;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-flex;
            align-items: center;
            gap: 10px;
            box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
        }

        .yewq9-platform-btn:hover {
            background-color: #ff5722;
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
        }

        .yewq9-platform-icon {
            font-size: 20px;
        }

        /* FAQ区域 */
        .yewq9-faq {
            padding: 80px 20px;
            background-color: white;
        }

        .yewq9-faq-list {
            max-width: 800px;
            margin: 0 auto;
        }

        .yewq9-faq-item {
            margin-bottom: 15px;
            border: 1px solid #ddd;
            border-radius: 6px;
            overflow: hidden;
        }

        .yewq9-faq-question {
            background-color: #f5f5f5;
            padding: 20px;
            cursor: pointer;
            font-weight: bold;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: all 0.3s ease;
            color: #0066cc;
        }

        .yewq9-faq-question:hover {
            background-color: #e8f0ff;
        }

        .yewq9-faq-toggle {
            font-size: 20px;
            transition: transform 0.3s ease;
        }

        .yewq9-faq-item.yewq9-active .yewq9-faq-toggle {
            transform: rotate(180deg);
        }

        .yewq9-faq-answer {
            padding: 0;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            background-color: white;
        }

        .yewq9-faq-item.yewq9-active .yewq9-faq-answer {
            padding: 20px;
            max-height: 500px;
        }

        .yewq9-faq-answer p {
            color: #666;
            line-height: 1.8;
        }

        /* 页脚 */
        .yewq9-footer {
            background-color: #1a1a1a;
            color: #999;
            padding: 60px 20px 30px;
        }

        .yewq9-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }

        .yewq9-footer-section h4 {
            color: white;
            margin-bottom: 15px;
            font-size: 16px;
        }

        .yewq9-footer-section ul {
            list-style: none;
        }

        .yewq9-footer-section ul li {
            margin-bottom: 10px;
        }

        .yewq9-footer-section a {
            color: #999;
            text-decoration: none;
            transition: color 0.3s ease;
        }

        .yewq9-footer-section a:hover {
            color: #0066cc;
        }

        .yewq9-footer-bottom {
            border-top: 1px solid #333;
            padding-top: 20px;
            text-align: center;
        }

        .yewq9-footer-bottom p {
            margin: 5px 0;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .yewq9-hero-title {
                font-size: 32px;
            }

            .yewq9-hero-subtitle {
                font-size: 16px;
            }

            .yewq9-nav-menu {
                gap: 15px;
            }

            .yewq9-nav-link {
                font-size: 13px;
            }

            .yewq9-section-title {
                font-size: 28px;
            }

            .yewq9-cta-buttons {
                flex-direction: column;
            }

            .yewq9-btn-primary,
            .yewq9-btn-secondary {
                width: 100%;
                max-width: 300px;
            }

            .yewq9-features-grid {
                grid-template-columns: 1fr;
            }

            .yewq9-platform-buttons {
                flex-direction: column;
            }

            .yewq9-platform-btn {
                width: 100%;
                justify-content: center;
            }

            .yewq9-navbar-container {
                height: auto;
                padding: 15px 20px;
            }

            .yewq9-nav-menu {
                flex-direction: column;
                width: 100%;
                gap: 10px;
                padding: 20px 0;
            }

            .yewq9-hero {
                padding: 50px 20px;
            }

            .yewq9-features,
            .yewq9-versions,
            .yewq9-download-section,
            .yewq9-faq {
                padding: 50px 20px;
            }
        }

        @media (max-width: 480px) {
            .yewq9-hero-title {
                font-size: 24px;
            }

            .yewq9-section-title {
                font-size: 22px;
            }

            .yewq9-feature-card {
                padding: 20px;
            }

            .yewq9-version-item {
                padding: 15px;
            }
        }