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

        html, body {
            height: 100%;
            font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Helvetica Neue', sans-serif;
            color: #333;
            background-color: #f8f9fa;
        }

        /* 导航栏样式 */
        .fv7n6r-navbar {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            padding: 0 20px;
            position: sticky;
            top: 0;
            z-index: 1000;
            box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
        }

        .fv7n6r-navbar-container {
            max-width: 1200px;
            margin: 0 auto;
            display: flex;
            align-items: center;
            justify-content: space-between;
            height: 70px;
        }

        .fv7n6r-logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: bold;
            color: white;
            text-decoration: none;
        }

        .fv7n6r-logo img {
            height: 45px;
            width: auto;
        }

        .fv7n6r-nav-menu {
            display: flex;
            gap: 30px;
            list-style: none;
        }

        .fv7n6r-nav-link {
            color: white;
            text-decoration: none;
            font-size: 15px;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
        }

        .fv7n6r-nav-link:hover {
            opacity: 0.8;
            transform: translateY(-2px);
        }

        .fv7n6r-nav-link::after {
            content: '';
            position: absolute;
            bottom: -5px;
            left: 0;
            width: 0;
            height: 2px;
            background: white;
            transition: width 0.3s ease;
        }

        .fv7n6r-nav-link:hover::after {
            width: 100%;
        }

        /* 主容器 */
        .fv7n6r-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 英雄区域 */
        .fv7n6r-hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 20px;
            text-align: center;
            margin-bottom: 60px;
            border-radius: 0 0 20px 20px;
        }

        .fv7n6r-hero-content {
            max-width: 800px;
            margin: 0 auto;
        }

        .fv7n6r-hero h1 {
            font-size: 48px;
            margin-bottom: 20px;
            font-weight: 700;
            line-height: 1.2;
        }

        .fv7n6r-hero-desc {
            font-size: 18px;
            margin-bottom: 30px;
            opacity: 0.95;
            line-height: 1.6;
        }

        .fv7n6r-version-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.2);
            padding: 8px 16px;
            border-radius: 20px;
            margin-bottom: 20px;
            font-size: 14px;
            border: 1px solid rgba(255, 255, 255, 0.3);
        }

        /* CTA按钮 */
        .fv7n6r-cta-group {
            display: flex;
            gap: 15px;
            justify-content: center;
            flex-wrap: wrap;
        }

        .fv7n6r-btn-primary {
            background: white;
            color: #667eea;
            padding: 15px 35px;
            border: none;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
        }

        .fv7n6r-btn-primary:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
        }

        .fv7n6r-btn-secondary {
            background: transparent;
            color: white;
            padding: 15px 35px;
            border: 2px solid white;
            border-radius: 8px;
            font-size: 16px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            text-decoration: none;
            display: inline-block;
        }

        .fv7n6r-btn-secondary:hover {
            background: white;
            color: #667eea;
        }

        /* 特性区域 */
        .fv7n6r-features {
            margin-bottom: 80px;
        }

        .fv7n6r-section-title {
            font-size: 36px;
            font-weight: 700;
            text-align: center;
            margin-bottom: 50px;
            color: #333;
        }

        .fv7n6r-features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-bottom: 40px;
        }

        .fv7n6r-feature-card {
            background: white;
            padding: 30px;
            border-radius: 12px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
            transition: all 0.3s ease;
            border-left: 4px solid #667eea;
        }

        .fv7n6r-feature-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
        }

        .fv7n6r-feature-icon {
            font-size: 36px;
            margin-bottom: 15px;
        }

        .fv7n6r-feature-card h3 {
            font-size: 20px;
            margin-bottom: 12px;
            color: #667eea;
        }

        .fv7n6r-feature-card p {
            font-size: 15px;
            color: #666;
            line-height: 1.6;
        }

        /* 更新日志区域 */
        .fv7n6r-changelog {
            background: white;
            padding: 50px;
            border-radius: 12px;
            margin-bottom: 80px;
            box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
        }

        .fv7n6r-changelog h2 {
            font-size: 28px;
            margin-bottom: 30px;
            color: #333;
        }

        .fv7n6r-version-item {
            padding: 20px;
            margin-bottom: 20px;
            background: #f8f9fa;
            border-left: 4px solid #764ba2;
            border-radius: 6px;
            transition: all 0.3s ease;
        }

        .fv7n6r-version-item:hover {
            background: #f0f1ff;
        }

        .fv7n6r-version-item h4 {
            color: #667eea;
            margin-bottom: 8px;
            font-size: 16px;
        }

        .fv7n6r-version-date {
            color: #999;
            font-size: 13px;
            margin-bottom: 10px;
        }

        .fv7n6r-update-list {
            list-style: none;
            margin-left: 0;
        }

        .fv7n6r-update-list li {
            padding: 8px 0;
            color: #666;
            font-size: 14px;
            padding-left: 20px;
            position: relative;
        }

        .fv7n6r-update-list li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #667eea;
            font-weight: bold;
        }

        /* 系统要求区域 */
        .fv7n6r-requirements {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 50px;
            border-radius: 12px;
            margin-bottom: 80px;
        }

        .fv7n6r-requirements h2 {
            font-size: 28px;
            margin-bottom: 30px;
        }

        .fv7n6r-requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }

        .fv7n6r-requirement-box {
            background: rgba(255, 255, 255, 0.1);
            padding: 20px;
            border-radius: 8px;
            border: 1px solid rgba(255, 255, 255, 0.2);
        }

        .fv7n6r-requirement-box h4 {
            margin-bottom: 12px;
            font-size: 16px;
        }

        .fv7n6r-requirement-box p {
            font-size: 14px;
            opacity: 0.9;
        }

        /* 常见问题 */
        .fv7n6r-faq {
            margin-bottom: 80px;
        }

        .fv7n6r-faq-item {
            background: white;
            padding: 25px;
            margin-bottom: 15px;
            border-radius: 8px;
            box-shadow: 0 2px 8px rgba(0, 0, 0, 0.06);
            cursor: pointer;
            transition: all 0.3s ease;
        }

        .fv7n6r-faq-item:hover {
            box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
        }

        .fv7n6r-faq-question {
            font-size: 16px;
            font-weight: 600;
            color: #333;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .fv7n6r-faq-toggle {
            color: #667eea;
            font-size: 20px;
            transition: transform 0.3s ease;
        }

        .fv7n6r-faq-item.active .fv7n6r-faq-toggle {
            transform: rotate(180deg);
        }

        .fv7n6r-faq-answer {
            display: none;
            margin-top: 15px;
            color: #666;
            font-size: 14px;
            line-height: 1.6;
        }

        .fv7n6r-faq-item.active .fv7n6r-faq-answer {
            display: block;
        }

        /* 页脚 */
        .fv7n6r-footer {
            background: #333;
            color: white;
            padding: 40px 20px 20px;
            text-align: center;
        }

        .fv7n6r-footer-content {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-bottom: 30px;
            text-align: left;
        }

        .fv7n6r-footer-section h4 {
            margin-bottom: 15px;
            color: #667eea;
        }

        .fv7n6r-footer-section a {
            display: block;
            color: #ccc;
            text-decoration: none;
            font-size: 13px;
            margin-bottom: 8px;
            transition: color 0.3s ease;
        }

        .fv7n6r-footer-section a:hover {
            color: #667eea;
        }

        .fv7n6r-footer-bottom {
            border-top: 1px solid #555;
            padding-top: 20px;
            text-align: center;
            font-size: 13px;
            color: #999;
        }

        /* 响应式设计 */
        @media (max-width: 768px) {
            .fv7n6r-navbar-container {
                height: auto;
                flex-direction: column;
                padding: 15px 0;
            }

            .fv7n6r-nav-menu {
                flex-direction: column;
                gap: 15px;
                text-align: center;
                margin-top: 15px;
            }

            .fv7n6r-hero {
                padding: 40px 20px;
            }

            .fv7n6r-hero h1 {
                font-size: 32px;
            }

            .fv7n6r-hero-desc {
                font-size: 16px;
            }

            .fv7n6r-cta-group {
                flex-direction: column;
                align-items: center;
            }

            .fv7n6r-btn-primary,
            .fv7n6r-btn-secondary {
                width: 100%;
                max-width: 300px;
            }

            .fv7n6r-section-title {
                font-size: 28px;
            }

            .fv7n6r-features-grid {
                grid-template-columns: 1fr;
            }

            .fv7n6r-changelog,
            .fv7n6r-requirements {
                padding: 30px 20px;
            }

            .fv7n6r-requirements-grid {
                grid-template-columns: 1fr;
            }

            .fv7n6r-footer-content {
                grid-template-columns: 1fr;
                text-align: center;
            }

            .fv7n6r-footer-section a {
                text-align: center;
            }
        }

        @media (max-width: 480px) {
            .fv7n6r-hero h1 {
                font-size: 24px;
            }

            .fv7n6r-section-title {
                font-size: 22px;
            }

            .fv7n6r-feature-card {
                padding: 20px;
            }

            .fv7n6r-changelog,
            .fv7n6r-requirements {
                padding: 20px;
            }
        }