:root {
            --primary: #2965f1;
            --primary-light: #4a7cff;
            --secondary: #00c6ff;
            --light: #f8fafc;
            --light-gray: #e2e8f0;
            --medium-gray: #94a3b8;
            --dark: #334155;
            --darker: #1e293b;
            --success: #10b981;
            --warning: #f59e0b;
            --danger: #ef4444;
            --shadow-sm: 0 1px 3px rgba(0,0,0,0.12);
            --shadow-md: 0 4px 6px rgba(0,0,0,0.1);
            --shadow-lg: 0 10px 25px rgba(0,0,0,0.1);
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: white;
            color: var(--darker);
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            width: 90%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 15px;
        }
        
        /* 导航栏样式 */
        header {
            background-color: white;
            position: fixed;
            width: 100%;
            top: 0;
            z-index: 1000;
            box-shadow: var(--shadow-sm);
            border-bottom: 1px solid var(--light-gray);
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            font-size: 24px;
            font-weight: 700;
            color: var(--darker);
            text-decoration: none;
        }
        
        .logo i {
            color: var(--primary);
        }
        
        .nav-links {
            display: flex;
            gap: 35px;
        }
        
        .nav-links a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            transition: all 0.3s ease;
            position: relative;
            padding: 5px 0;
        }
        
        .nav-links a:hover, 
        .nav-links a.active {
            color: var(--primary);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            transition: width 0.3s ease;
            border-radius: 2px;
        }
        
        .nav-links a:hover::after,
        .nav-links a.active::after {
            width: 100%;
        }
        
        .download-btn {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            border: none;
            padding: 12px 28px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-md);
            text-decoration: none;
            display: inline-block;
        }
        
        .download-btn:hover {
            transform: translateY(-2px);
            box-shadow: var(--shadow-lg);
        }
        
        /* 英雄区域 */
        .hero {
            padding: 160px 0 100px;
            background: linear-gradient(135deg, #f6f9ff 0%, #ffffff 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            right: 0;
            width: 50%;
            height: 100%;
            background: linear-gradient(135deg, rgba(41, 101, 241, 0.03) 0%, rgba(0, 198, 255, 0.03) 100%);
            clip-path: polygon(100% 0, 0 0, 100% 100%);
        }
        
        .hero-content {
            display: flex;
            align-items: center;
            gap: 50px;
        }
        
        .hero-text {
            flex: 1;
            z-index: 2;
        }
        
        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            z-index: 2;
        }
        
        .terminal-mockup {
            width: 100%;
            max-width: 500px;
            background: white;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-lg);
            border: 1px solid var(--light-gray);
        }
        
        .terminal-header {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            padding: 15px 20px;
            display: flex;
            align-items: center;
            justify-content: space-between;
        }
        
        .terminal-header-left {
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .terminal-dot {
            width: 12px;
            height: 12px;
            border-radius: 50%;
        }
        
        .dot-red { background: #ff5f56; }
        .dot-yellow { background: #ffbd2e; }
        .dot-green { background: #27c93f; }
        
        .terminal-title {
            color: white;
            font-size: 14px;
            font-weight: 600;
        }
        
        .terminal-body {
            padding: 25px;
            font-family: 'Courier New', 'Consolas', monospace;
            font-size: 14px;
            line-height: 1.5;
            background: #1a1a1a;
            color: #f0f0f0;
        }
        
        .prompt { color: var(--success); }
        .command { color: white; }
        .output { color: #94a3b8; }
        
        h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            color: var(--darker);
            line-height: 1.2;
        }
        
        .hero h1 {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .subtitle {
            font-size: 1.2rem;
            color: var(--medium-gray);
            margin-bottom: 30px;
            max-width: 600px;
        }
        
        .cta-buttons {
            display: flex;
            gap: 15px;
            margin-top: 30px;
            flex-wrap: wrap;
        }
        
        .btn {
            padding: 14px 32px;
            border-radius: 8px;
            font-weight: 600;
            text-decoration: none;
            transition: all 0.3s ease;
            display: inline-flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
        }
        
        .btn-primary {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            box-shadow: var(--shadow-md);
        }
        
        .btn-secondary {
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary);
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: var(--shadow-lg);
        }
        
        .btn-primary:hover {
            background: linear-gradient(90deg, var(--primary-light), var(--secondary));
        }
        
        .btn-secondary:hover {
            background: var(--primary);
            color: white;
        }
        
        /* 功能区 */
        .section {
            padding: 100px 0;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
            color: var(--darker);
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            border-radius: 2px;
        }
        
        .section-title p {
            color: var(--medium-gray);
            max-width: 600px;
            margin: 20px auto 0;
            font-size: 1.1rem;
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background: white;
            border-radius: 12px;
            padding: 35px 30px;
            transition: all 0.3s ease;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--light-gray);
            text-align: center;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow-lg);
            border-color: var(--primary-light);
        }
        
        .feature-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            border-radius: 20px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
        }
        
        .feature-icon i {
            font-size: 36px;
            color: white;
        }
        
        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--darker);
        }
        
        .feature-card p {
            color: var(--medium-gray);
        }
        
        /* 下载区域 */
        .download-section {
            background: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 100%);
        }
        
        .download-container {
            max-width: 900px;
            margin: 0 auto;
        }
        
        .download-card {
            background: white;
            border-radius: 12px;
            padding: 50px 40px;
            text-align: center;
            box-shadow: var(--shadow-lg);
            border: 2px solid var(--light-gray);
            transition: all 0.3s ease;
            margin-bottom: 40px;
        }
        
        .download-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
            border-color: var(--primary-light);
        }
        
        .download-icon {
            font-size: 60px;
            margin-bottom: 20px;
            color: var(--primary);
        }
        
        .download-card h3 {
            font-size: 2rem;
            margin-bottom: 15px;
            color: var(--darker);
        }
        
        .download-card p {
            color: var(--medium-gray);
            margin-bottom: 25px;
            line-height: 1.6;
            font-size: 1.1rem;
        }
        
        .download-buttons {
            display: flex;
            flex-direction: column;
            gap: 20px;
            max-width: 400px;
            margin: 30px auto;
        }
        
        .storage-option {
            display: flex;
            align-items: center;
            justify-content: space-between;
            padding: 20px;
            background: #f8fafc;
            border-radius: 10px;
            transition: all 0.3s ease;
            border: 1px solid transparent;
            text-decoration: none;
            color: inherit;
        }
        
        .storage-option:hover {
            background: #e2e8f0;
            border-color: var(--light-gray);
            transform: translateY(-3px);
            box-shadow: var(--shadow-md);
        }
        
        .storage-info {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .storage-icon {
            width: 50px;
            height: 50px;
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 24px;
            color: white;
        }
        
        .quark-icon {
            background: linear-gradient(135deg, #5C6BC0, #7986CB);
        }
        
        .baidu-icon {
            background: linear-gradient(135deg, #2932E1, #3949AB);
        }
        
        .storage-text h4 {
            font-size: 1.2rem;
            margin-bottom: 5px;
            color: var(--darker);
        }
        
        .storage-text p {
            font-size: 0.9rem;
            color: var(--medium-gray);
            margin: 0;
        }
        
        .download-arrow {
            color: var(--primary);
            font-size: 20px;
        }
        
        .version-info {
            background: #f8fafc;
            border-radius: 8px;
            padding: 20px;
            margin-top: 30px;
            text-align: left;
        }
        
        .version-info h4 {
            color: var(--darker);
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .version-info ul {
            list-style: none;
            padding-left: 0;
        }
        
        .version-info li {
            padding: 8px 0;
            border-bottom: 1px dashed #e2e8f0;
            display: flex;
            justify-content: space-between;
        }
        
        .version-info li:last-child {
            border-bottom: none;
        }
        
        .info-label {
            color: var(--medium-gray);
        }
        
        .info-value {
            color: var(--darker);
            font-weight: 500;
        }
        
        .seo-content {
            margin-top: 50px;
            padding: 30px;
            background: white;
            border-radius: 12px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--light-gray);
        }
        
        .seo-content h3 {
            font-size: 1.5rem;
            margin-bottom: 20px;
            color: var(--darker);
        }
        
        .seo-content p {
            color: var(--medium-gray);
            margin-bottom: 15px;
            line-height: 1.7;
        }
        
        .seo-content ul {
            color: var(--medium-gray);
            margin-left: 20px;
            margin-bottom: 20px;
        }
        
        .seo-content li {
            margin-bottom: 10px;
            line-height: 1.6;
        }
        
        /* 安装教程区域 */
        .tutorial-section {
            background: white;
        }
        
        .tutorial-steps {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 30px;
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .tutorial-step {
            background: white;
            border-radius: 12px;
            padding: 30px;
            box-shadow: var(--shadow-md);
            border: 1px solid var(--light-gray);
            position: relative;
            transition: all 0.3s ease;
        }
        
        .tutorial-step:hover {
            transform: translateY(-5px);
            box-shadow: var(--shadow-lg);
        }
        
        .step-number {
            position: absolute;
            top: -15px;
            left: 30px;
            width: 40px;
            height: 40px;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: 700;
            font-size: 18px;
        }
        
        .tutorial-step h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--darker);
            margin-top: 10px;
        }
        
        .tutorial-step p {
            color: var(--medium-gray);
            margin-bottom: 20px;
        }
        
        .code-block {
            background: #1a1a1a;
            color: #f0f0f0;
            padding: 15px;
            border-radius: 8px;
            font-family: 'Courier New', monospace;
            font-size: 14px;
            overflow-x: auto;
            margin: 15px 0;
        }
        
        /* 常见问题 */
        .faq-container {
            max-width: 800px;
            margin: 0 auto;
        }
        
        .faq-item {
            margin-bottom: 15px;
            border-radius: 12px;
            overflow: hidden;
            box-shadow: var(--shadow-sm);
            border: 1px solid var(--light-gray);
            transition: all 0.3s ease;
        }
        
        .faq-item:hover {
            box-shadow: var(--shadow-md);
        }
        
        .faq-question {
            padding: 20px 25px;
            background: white;
            display: flex;
            justify-content: space-between;
            align-items: center;
            cursor: pointer;
            font-weight: 600;
            color: var(--darker);
            transition: all 0.3s ease;
        }
        
        .faq-question:hover {
            background: #f8fafc;
        }
        
        .faq-answer {
            padding: 0 25px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            color: var(--medium-gray);
            background: white;
        }
        
        .faq-item.active .faq-answer {
            padding: 0 25px 25px;
            max-height: 500px;
        }
        
        .faq-toggle {
            transition: transform 0.3s ease;
            color: var(--primary);
        }
        
        .faq-item.active .faq-toggle {
            transform: rotate(180deg);
        }
        
        /* 页脚 */
        footer {
            background: var(--darker);
            padding: 60px 0 30px;
            color: white;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h3 {
            font-size: 1.3rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
            color: white;
        }
        
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 40px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 12px;
        }
        
        .footer-links a {
            color: #cbd5e1;
            text-decoration: none;
            transition: all 0.3s ease;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        .footer-links a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .social-links {
            display: flex;
            gap: 15px;
            margin-top: 20px;
        }
        
        .social-links a {
            display: flex;
            align-items: center;
            justify-content: center;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            background: rgba(255, 255, 255, 0.1);
            color: white;
            transition: all 0.3s ease;
        }
        
        .social-links a:hover {
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            transform: translateY(-3px);
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: #94a3b8;
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-content {
                flex-direction: column;
            }
            
            .hero-text, .hero-image {
                text-align: center;
            }
            
            .cta-buttons {
                justify-content: center;
            }
            
            h1 {
                font-size: 2.8rem;
            }
            
            .nav-links {
                gap: 20px;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            h1 {
                font-size: 2.2rem;
            }
            
            .section {
                padding: 70px 0;
            }
            
            .section-title h2 {
                font-size: 2rem;
            }
            
            .download-buttons {
                max-width: 100%;
            }
            
            .storage-option {
                flex-direction: column;
                align-items: flex-start;
                gap: 15px;
            }
            
            .download-arrow {
                align-self: flex-end;
            }
        }