:root {
            --primary: #00af4d;
            --primary-dark: #008c3e;
            --secondary: #00a0e9;
            --accent: #ff9800;
            --dark: #1a1a2e;
            --gray: #6c757d;
            --light-gray: #f8f9fa;
            --border: #e9ecef;
            --white: #ffffff;
            --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
            --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
            --gradient: linear-gradient(135deg, #00af4d 0%, #00a0e9 100%);
        }

        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Noto Sans SC', 'Microsoft YaHei', sans-serif;
        }

        body {
            background-color: #f5f7fa;
            color: #333;
            line-height: 1.7;
            overflow-x: hidden;
        }

        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }

        /* 顶部导航栏 */
        .navbar {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            box-shadow: var(--shadow-sm);
            position: sticky;
            top: 0;
            z-index: 1000;
            padding: 16px 0;
        }

        .navbar-content {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }

        .logo {
            display: flex;
            align-items: center;
            gap: 10px;
            font-size: 20px;
            font-weight: 700;
            color: var(--primary);
        }

        .logo-icon {
            width: 36px;
            height: 36px;
            background: var(--gradient);
            border-radius: 8px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 18px;
        }

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

        .nav-links a {
            text-decoration: none;
            color: #555;
            font-weight: 500;
            transition: color 0.3s;
        }

        .nav-links a:hover {
            color: var(--primary);
        }

        /* 横幅区域 - 完全融合下载模块 */
        .hero-banner {
            position: relative;
            padding: 100px 0;
            overflow: hidden;
            background-image: url('https://p4.ssl.qhimg.com/t016b7e1e83c8967ff1.png');
            background-size: cover;
            background-position: center;
        }

        .hero-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
            gap: 60px;
        }

        /* 左侧内容 */
        .hero-content {
            flex: 1;
            text-align: left;
            max-width: 600px;
            color: #000;
        }

        .hero-badge {
            display: inline-block;
            background: rgba(255, 255, 255, 0.6);
            backdrop-filter: blur(5px);
            padding: 8px 20px;
            border-radius: 30px;
            font-size: 14px;
            margin-bottom: 20px;
            border: 1px solid rgba(0, 0, 0, 0.1);
            color: #000;
        }

        .hero-title {
            font-size: 56px;
            font-weight: 900;
            margin-bottom: 20px;
            line-height: 1.2;
            color: #000;
        }

        .hero-subtitle {
            font-size: 22px;
            opacity: 0.8;
            margin-bottom: 40px;
            color: #333;
        }

        .hero-stats {
            display: flex;
            gap: 40px;
        }

        .stat-item {
            text-align: left;
        }

        .stat-number {
            font-size: 36px;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--primary);
        }

        .stat-label {
            font-size: 14px;
            color: #333;
        }

        /* 右侧下载区域 - 无背景色，自然融入 */
        .hero-download-area {
            flex: 0 0 380px;
            text-align: left;
            color: var(--dark);
            display: flex;
            flex-direction: column;
            gap: 25px;
        }

        .download-header {
            display: flex;
            align-items: center;
            gap: 15px;
        }

        .app-icon {
            width: 64px;
            height: 64px;
            background: white;
            border-radius: 14px;
            display: flex;
            align-items: center;
            justify-content: center;
            box-shadow: var(--shadow-sm);
        }

        .app-icon img {
            width: 40px;
            height: 40px;
        }

        .app-name h2 {
            font-size: 24px;
            color: #000;
            font-weight: 700;
        }

        .app-name p {
            font-size: 14px;
            color: #555;
        }

        .app-info-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 15px;
            padding-bottom: 25px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.1);
        }

        .info-item {
            display: flex;
            flex-direction: column;
            gap: 4px;
        }

        .info-label {
            font-size: 13px;
            color: var(--gray);
        }

        .info-value {
            font-size: 15px;
            color: #000;
            font-weight: 600;
        }

        .download-actions {
            display: flex;
            flex-direction: column;
            gap: 12px;
        }

        .btn-download {
            border: none;
            padding: 16px 24px;
            font-size: 16px;
            font-weight: 700;
            border-radius: 12px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 10px;
            transition: all 0.3s;
            position: relative;
            overflow: hidden;
        }

        .btn-windows {
            background: var(--gradient);
            color: white;
            box-shadow: 0 8px 20px rgba(0, 175, 77, 0.3);
        }

        .btn-mac {
            background: var(--dark);
            color: white;
            box-shadow: 0 8px 20px rgba(26, 26, 46, 0.3);
        }

        .btn-download:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 25px rgba(0, 0, 0, 0.2);
        }

        .security-note {
            text-align: center;
            font-size: 13px;
            color: var(--gray);
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 6px;
        }

        .security-note i {
            color: var(--primary);
        }

        /* 区块通用样式 */
        section {
            padding: 80px 0;
        }

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

        .section-title {
            font-size: 36px;
            font-weight: 700;
            color: var(--dark);
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }

        .section-title::after {
            content: '';
            position: absolute;
            bottom: -12px;
            left: 50%;
            transform: translateX(-50%);
            width: 60px;
            height: 4px;
            background: var(--gradient);
            border-radius: 2px;
        }

        .section-subtitle {
            color: var(--gray);
            font-size: 16px;
            margin-top: 15px;
        }

        /* 下载流程模块 */
        .process-section {
            background: white;
        }

        .process-timeline {
            position: relative;
            max-width: 1000px;
            margin: 0 auto;
        }

        .process-timeline::before {
            content: '';
            position: absolute;
            top: 40px;
            left: 10%;
            right: 10%;
            height: 3px;
            background: linear-gradient(to right, var(--primary), var(--secondary));
        }

        .process-steps {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            position: relative;
        }

        .process-step {
            text-align: center;
        }

        .step-number {
            width: 80px;
            height: 80px;
            background: white;
            border: 3px solid var(--primary);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 20px;
            font-size: 32px;
            font-weight: 700;
            color: var(--primary);
            position: relative;
            z-index: 2;
            transition: all 0.3s;
        }

        .process-step:hover .step-number {
            background: var(--primary);
            color: white;
            transform: scale(1.1);
        }

        /* 核心功能模块 */
        .features-section {
            background: var(--light-gray);
        }

        .features-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 30px;
        }

        .feature-card {
            text-align: center;
            padding: 35px 25px;
            border-radius: 16px;
            transition: all 0.3s;
            background: white;
            border: 1px solid transparent;
            box-shadow: var(--shadow-sm);
        }

        .feature-card:hover {
            box-shadow: var(--shadow-md);
            transform: translateY(-10px);
            border-color: var(--border);
        }

        .feature-icon {
            width: 70px;
            height: 70px;
            margin: 0 auto 20px;
            background: var(--gradient);
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 28px;
            box-shadow: 0 8px 15px rgba(0, 175, 77, 0.2);
        }

        .feature-card h3 {
            font-size: 20px;
            color: var(--dark);
            margin-bottom: 12px;
            font-weight: 600;
        }

        .feature-card p {
            color: var(--gray);
            font-size: 14px;
        }

        /* FAQ 问答模块 */
        .faq-section {
            background: white;
        }

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

        .faq-item {
            background: var(--light-gray);
            border-radius: 12px;
            margin-bottom: 15px;
            box-shadow: var(--shadow-sm);
            overflow: hidden;
            transition: all 0.3s;
        }

        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }

        .faq-question {
            padding: 20px 30px;
            font-size: 17px;
            font-weight: 600;
            color: var(--dark);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background 0.3s;
        }

        .faq-question:hover {
            background: #eef0f3;
        }

        .faq-question i {
            color: var(--primary);
            transition: transform 0.3s;
        }

        .faq-item.active .faq-question i {
            transform: rotate(45deg);
        }

        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.4s ease, padding 0.4s ease;
            padding: 0 30px;
            color: var(--gray);
            line-height: 1.8;
        }

        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 30px 20px;
        }

        /* 更新日志模块 */
        .changelog-section {
            background: var(--light-gray);
        }

        .changelog-container {
            max-width: 800px;
            margin: 0 auto;
            position: relative;
            padding-left: 30px;
        }

        .changelog-container::before {
            content: '';
            position: absolute;
            left: 0;
            top: 0;
            bottom: 0;
            width: 2px;
            background: var(--border);
        }

        .changelog-item {
            position: relative;
            padding-bottom: 30px;
        }

        .changelog-item::before {
            content: '';
            position: absolute;
            left: -34px;
            top: 5px;
            width: 10px;
            height: 10px;
            background: var(--primary);
            border-radius: 50%;
            border: 2px solid white;
            box-shadow: 0 0 0 2px var(--primary);
        }

        .changelog-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 10px;
        }

        .version-tag {
            background: var(--gradient);
            color: white;
            padding: 4px 12px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: 600;
        }

        .update-date {
            color: var(--gray);
            font-size: 14px;
        }

        .changelog-content {
            color: var(--gray);
            font-size: 15px;
            line-height: 1.8;
        }

        /* 用户评价模块 */
        .reviews-section {
            background: white;
        }

        .reviews-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
        }

        .review-card {
            background: var(--light-gray);
            padding: 30px;
            border-radius: 16px;
            box-shadow: var(--shadow-sm);
        }

        .review-header {
            display: flex;
            align-items: center;
            gap: 15px;
            margin-bottom: 15px;
        }

        .user-avatar {
            width: 50px;
            height: 50px;
            background: var(--gradient);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            color: white;
            font-size: 20px;
            font-weight: 600;
        }

        .user-info h4 {
            color: var(--dark);
            font-size: 16px;
        }

        .user-info .rating {
            color: #ffc107;
            font-size: 14px;
        }

        .review-text {
            color: var(--gray);
            font-size: 14px;
            line-height: 1.7;
            font-style: italic;
        }

        /* 底部 */
        .footer {
            background: var(--dark);
            color: #aaa;
            padding: 60px 0 30px;
        }

        .footer-content {
            display: grid;
            grid-template-columns: 2fr 1fr 1fr 1fr;
            gap: 40px;
            margin-bottom: 40px;
        }

        .footer-brand p {
            color: #888;
            font-size: 14px;
            margin-top: 15px;
        }

        .footer-section h4 {
            color: white;
            margin-bottom: 20px;
        }

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

        .footer-links li {
            margin-bottom: 10px;
        }

        .footer-links a {
            color: #888;
            text-decoration: none;
            font-size: 14px;
            transition: color 0.3s;
        }

        .footer-links a:hover {
            color: var(--primary);
        }

        .footer-bottom {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #333;
            color: #666;
            font-size: 14px;
        }

        /* 响应式 */
        @media (max-width: 992px) {
            .hero-container {
                flex-direction: column;
                align-items: flex-start;
                gap: 40px;
            }
            .hero-content {
                text-align: center;
                max-width: 100%;
                margin: 0 auto;
            }
            .hero-stats {
                justify-content: center;
            }
            .hero-download-area {
                width: 100%;
                max-width: 450px;
                margin: 0 auto;
            }
            .features-grid, .reviews-grid { grid-template-columns: repeat(2, 1fr); }
            .footer-content { grid-template-columns: 1fr 1fr; }
        }

        @media (max-width: 768px) {
            .nav-links { display: none; }
            .hero-title { font-size: 36px; }
            .features-grid, .reviews-grid, .process-steps { grid-template-columns: 1fr; }
            .process-timeline::before { display: none; }
            .footer-content { grid-template-columns: 1fr; }
            .app-info-grid { grid-template-columns: 1fr; }
        }

        /* 动画 */
        @keyframes fadeInUp {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }

        .animate {
            animation: fadeInUp 0.8s ease forwards;
        }