* { margin: 0; padding: 0; box-sizing: border-box; }
        :root {
            --primary: #4a00e0;
            --secondary: #8e2de2;
            --accent: #00c9ff;
            --dark: #0f172a;
            --light: #f8fafc;
            --gray: #64748b;
            --success: #10b981;
        }
        body {
            font-family: 'Inter', sans-serif;
            background: linear-gradient(135deg, #0f172a, #1e293b);
            color: var(--light);
            line-height: 1.6;
            overflow-x: hidden;
        }
        .container {
            max-width: 1280px;
            margin: 0 auto;
            padding: 0 24px;
            color: #cbd5e1;
        }
        .container a {
            color: #cbd5e1;
        }
        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            width: 100%;
            z-index: 1000;
            background: rgba(15, 23, 42, 0.9);
            backdrop-filter: blur(10px);
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 80px;
        }
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
            text-decoration: none;
        }
        .logo img { height: 40px; width: auto; }
        .logo-text {
            font-size: 1.5rem;
            font-weight: 700;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .nav-links {
            display: flex;
            gap: 32px;
            align-items: center;
        }
        .nav-links a {
            color: var(--light);
            text-decoration: none;
            font-weight: 500;
            position: relative;
            transition: color 0.3s;
            cursor: pointer;
        }
        .nav-links a:hover { color: var(--accent); }
        .nav-links a::after {
            content: '';
            position: absolute;
            bottom: -4px;
            left: 0;
            width: 0;
            height: 2px;
            background: var(--accent);
            transition: width 0.3s;
        }
        .nav-links a:hover::after { width: 100%; }
        .nav-download-btn {
            background: linear-gradient(90deg, var(--accent), var(--secondary));
            color: white !important;
            padding: 8px 24px !important;
            border-radius: 30px;
            font-weight: 600;
            transition: all 0.3s;
            box-shadow: 0 4px 15px rgba(142, 45, 226, 0.3);
        }
        .nav-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(142, 45, 226, 0.5);
        }
        .mobile-menu-btn {
            display: none;
            background: none;
            border: none;
            color: var(--light);
            font-size: 1.8rem;
            cursor: pointer;
        }
        #mobileNav {
            display: none;
            position: fixed;
            top: 80px;
            left: 0;
            width: 100%;
            background: var(--dark);
            padding: 20px;
            z-index: 999;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
        }
        #mobileNav a {
            display: block;
            color: var(--light);
            text-decoration: none;
            padding: 12px 0;
            border-bottom: 1px solid rgba(255, 255, 255, 0.1);
            font-size: 1.1rem;
        }
        .cta-button {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 12px 32px;
            border-radius: 30px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
            border: none;
            cursor: pointer;
            box-shadow: 0 4px 15px rgba(74, 0, 224, 0.3);
            font-size: 1rem;
        }
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(74, 0, 224, 0.4);
        }
        .btn-secondary {
            background: transparent;
            border: 2px solid var(--accent);
            box-shadow: none;
        }
        .btn-secondary:hover {
            background: rgba(0, 201, 255, 0.1);
        }
        /* 首屏 Hero */
        .hero {
            padding: 160px 0 100px;
            position: relative;
            overflow: hidden;
        }
        .hero::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle, rgba(74,0,224,0.15) 0%, rgba(142,45,226,0.1) 30%, transparent 70%);
            z-index: -1;
            animation: rotate 30s linear infinite;
        }
        @keyframes rotate { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
        .hero-content {
            display: flex;
            align-items: center;
            gap: 60px;
        }
        .hero-text { flex: 1; }
        .hero-text h1 {
            font-size: 3.5rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .hero-text p {
            font-size: 1.2rem;
            margin-bottom: 30px;
            color: #cbd5e1;
            max-width: 600px;
        }
        .hero-buttons {
            display: flex;
            gap: 16px;
            margin-top: 30px;
        }
        .hero-image {
            flex: 1;
            display: flex;
            justify-content: center;
            animation: float 6s ease-in-out infinite;
        }
        .hero-image img {
            max-width: 100%;
            border-radius: 20px;
            box-shadow: 0 30px 60px rgba(0,0,0,0.4);
        }
        @keyframes float {
            0% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
            100% { transform: translateY(0px); }
        }
        /* 统计数字 */
        .stats { padding: 60px 0; background: rgba(0,0,0,0.2); }
        .stats-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 30px;
            text-align: center;
        }
        .stat-number {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 8px;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        .stat-label { font-size: 1rem; color: #cbd5e1; }
        /* 通用区块 */
        .section-title {
            text-align: center;
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 60px;
            position: relative;
        }
        .section-title::after {
            content: '';
            position: absolute;
            bottom: -15px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            border-radius: 2px;
        }
        /* 核心功能 */
        .features-grid {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 30px;
        }
        .feature-card {
            background: rgba(255,255,255,0.05);
            border-radius: 20px;
            padding: 30px;
            transition: all 0.4s;
            border: 1px solid rgba(255,255,255,0.1);
            text-align: center;
        }
        .feature-card:hover {
            transform: translateY(-10px);
            background: rgba(255,255,255,0.08);
            border-color: rgba(0,201,255,0.3);
        }
        .feature-icon { font-size: 3rem; margin-bottom: 20px; }
        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
            color: var(--accent);
        }
        .feature-card p { color: #cbd5e1; }
        /* 下载中心模块样式 (精简) */
        .download-section { padding: 80px 0; background: transparent; }
        .feature-banner {
            background: rgba(0,201,255,0.1);
            border: 1px solid var(--accent);
            border-radius: 60px;
            padding: 16px 30px;
            margin: 0 0 40px;
            display: flex;
            align-items: center;
            justify-content: space-between;
            flex-wrap: wrap;
            gap: 15px;
        }
        .feature-banner .tag {
            background: var(--accent);
            color: var(--dark);
            padding: 6px 16px;
            border-radius: 40px;
            font-weight: 700;
            font-size: 0.9rem;
        }
        .feature-banner .btn-small {
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 8px 24px;
            border-radius: 40px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s;
        }
        .feature-banner .btn-small:hover {
            transform: translateY(-2px);
            box-shadow: 0 8px 16px rgba(142,45,226,0.3);
        }
        .download-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 24px;
            margin-bottom: 50px;
        }
        .download-card {
            background: rgba(255,255,255,0.05);
            border-radius: 24px;
            padding: 32px 20px;
            text-align: center;
            border: 1px solid rgba(255,255,255,0.1);
            transition: all 0.4s;
            position: relative;
            overflow: hidden;
        }
        .download-card::before {
            content: '';
            position: absolute;
            top: 0; left: 0; width: 100%; height: 4px;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            opacity: 0;
            transition: opacity 0.4s;
        }
        .download-card:hover {
            transform: translateY(-10px);
            background: rgba(255,255,255,0.08);
            border-color: var(--accent);
        }
        .download-card:hover::before { opacity: 1; }
        .platform-icon { font-size: 3.5rem; margin-bottom: 16px; }
        .download-card h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 8px;
            color: #000;
        }
        .version-info { color: #94a3b8; margin-bottom: 24px; font-size: 0.95rem; }
        .download-btn {
            display: inline-block;
            background: linear-gradient(90deg, var(--primary), var(--secondary));
            color: white;
            padding: 14px 0;
            border-radius: 50px;
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            transition: all 0.3s;
            box-shadow: 0 8px 16px rgba(74,0,224,0.3);
            width: 100%;
            max-width: 180px;
            margin: 0 auto;
        }
        .download-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 12px 24px rgba(142,45,226,0.4);
        }
        .new-badge {
            position: absolute;
            top: 12px; right: -30px;
            background: var(--accent);
            color: var(--dark);
            padding: 4px 30px;
            font-size: 0.8rem;
            font-weight: 700;
            transform: rotate(45deg);
            width: 120px;
            text-align: center;
        }
        .other-platforms, .quick-guide, .version-highlights, .node-section, .why-section, .download-faq {
            margin-top: 60px;
            padding: 40px;
            background: rgba(0,0,0,0.2);
            border-radius: 24px;
            border-left: 6px solid var(--accent);
        }
        .other-platforms h3, .quick-guide h3, .version-highlights h3, .node-section h3, .why-section h3, .download-faq h3 {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 30px;
            color: var(--accent);
            display: flex;
            align-items: center;
            gap: 10px;
        }
        .other-grid, .highlights-grid, .why-grid, .download-faq-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 24px;
        }
        .other-item, .highlight-item, .why-item, .faq-subitem {
            background: rgba(255,255,255,0.05);
            border-radius: 16px;
            padding: 20px;
            transition: all 0.3s;
            border: 1px solid rgba(255,255,255,0.1);
            text-decoration: none;
            color: white;
        }
        .other-item:hover, .highlight-item:hover, .why-item:hover {
            background: rgba(255,255,255,0.08);
            border-color: var(--accent);
            transform: translateY(-5px);
        }
        .other-icon, .highlight-icon, .why-icon { font-size: 2.5rem; margin-bottom: 12px; }
        .other-item h4, .highlight-item h4 { font-size: 1.2rem; margin-bottom: 4px; color: var(--accent); }
        .other-item p, .highlight-item p, .why-item p { color: #94a3b8; font-size: 0.9rem; }
        .node-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 12px;
            justify-content: center;
        }
        .node-tag {
            background: rgba(142,45,226,0.1);
            border: 1px solid var(--secondary);
            color: var(--secondary);
            padding: 8px 20px;
            border-radius: 40px;
            font-size: 1rem;
            font-weight: 500;
            transition: all 0.3s;
        }
        .node-tag:hover {
            background: var(--secondary);
            color: white;
        }
        .node-stats { text-align: center; color: #cbd5e1; margin-top: 20px; }
        .node-stats strong { color: var(--accent); font-size: 1.3rem; }
        .why-grid { grid-template-columns: repeat(3,1fr); }
        .download-faq-grid { grid-template-columns: repeat(2,1fr); }
        .faq-subitem { border-left: 4px solid var(--accent); }
        .faq-subitem .faq-q { font-weight: 700; color: white; margin-bottom: 8px; }
        .faq-subitem .faq-a { color: #cbd5e1; font-size: 0.95rem; }
        .quick-guide .guide-steps {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 30px;
        }
        .guide-step { text-align: center; }
        .step-number { font-size: 2rem; margin-bottom: 15px; }
        .guide-step h4 { color: var(--accent); margin-bottom: 8px; font-size: 1.3rem; }
        .guide-step p { color: #cbd5e1; font-size: 0.95rem; }
        /* 技术架构 */
        .tech-grid {
            display: grid;
            grid-template-columns: repeat(3,1fr);
            gap: 30px;
        }
        .tech-item {
            background: rgba(255,255,255,0.05);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid rgba(255,255,255,0.1);
            transition: all 0.4s;
        }
        .tech-item:hover {
            transform: translateY(-10px);
            border-color: var(--accent);
        }
        .tech-icon { font-size: 2.5rem; margin-bottom: 20px; }
        .tech-item h3 { font-size: 1.5rem; margin-bottom: 15px; color: var(--accent); }
        .tech-item p { color: #cbd5e1; }
        /* 品牌故事/用户评价/使用场景/FAQ/企业方案 */
        .brand-story, .testimonials, .scenarios, .faq, .enterprise { padding: 100px 0; background: rgba(0,0,0,0.2); }
        .testimonials-grid, .scenarios-grid, .faq-grid { display: grid; gap: 30px; margin-top: 40px; }
        .testimonials-grid { grid-template-columns: repeat(3,1fr); }
        .testimonial-card {
            background: rgba(255,255,255,0.05);
            border-radius: 20px;
            padding: 30px;
            border: 1px solid rgba(255,255,255,0.1);
        }
        .testimonial-text { color: #cbd5e1; font-style: italic; margin-bottom: 20px; }
        .testimonial-author { text-align: right; color: var(--accent); }
        .scenarios-grid { grid-template-columns: repeat(3,1fr); }
        .scenario-card {
            background: rgba(255,255,255,0.05);
            border-radius: 20px;
            padding: 30px;
            text-align: center;
            transition: all 0.4s;
        }
        .scenario-card:hover { transform: translateY(-10px); border-color: var(--accent); }
        .scenario-icon { font-size: 3rem; margin-bottom: 20px; }
        .scenario-card h3 { color: var(--accent); margin-bottom: 15px; font-size: 1.5rem; }
        .scenario-card p { color: #cbd5e1; }
        .faq-grid { grid-template-columns: repeat(2,1fr); }
        .faq-item {
            background: rgba(255,255,255,0.03);
            border-radius: 12px;
            padding: 20px;
            border-left: 4px solid var(--accent);
            cursor: pointer;
        }
        .faq-question {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-weight: 600;
            font-size: 1.1rem;
            color: white;
        }
        .faq-question span { color: var(--accent); font-size: 1.5rem; transition: transform 0.3s; }
        .faq-item.active .faq-question span { transform: rotate(45deg); }
        .faq-answer {
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease;
            color: #cbd5e1;
            margin-top: 0;
        }
        .faq-item.active .faq-answer { max-height: 200px; margin-top: 15px; }
        /* 企业模块 - 修复图片溢出 */
        .enterprise-content {
            background: linear-gradient(135deg, rgba(74,0,224,0.1), rgba(142,45,226,0.1));
            border-radius: 30px;
            padding: 60px;
            border: 1px solid rgba(255,255,255,0.1);
            margin-top: 40px;
            display: flex;
            align-items: center;
            gap: 50px;
            flex-wrap: wrap;
        }
        .enterprise-text {
            flex: 1 1 300px;
            min-width: 280px;
        }
        .enterprise-text h3 { font-size: 2rem; margin-bottom: 20px; }
        .enterprise-features {
            display: grid;
            grid-template-columns: repeat(2,1fr);
            gap: 20px;
            margin-top: 20px;
        }
        .enterprise-feature { display: flex; align-items: center; gap: 10px; color: #cbd5e1; }
        .enterprise-feature i { color: var(--success); font-size: 1.2rem; }
        .enterprise-image {
            flex: 1 1 300px;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
        }
        .enterprise-image img {
            max-width: 100%;
            height: auto;
            display: block;
            border-radius: 20px;
            box-shadow: 0 20px 40px rgba(0,0,0,0.3);
        }
        /* 页脚 */
        footer { padding: 80px 0 30px; background: #0a0f1a; }
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(4,1fr);
            gap: 40px;
            margin-bottom: 50px;
        }
        .footer-column h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        .footer-column h3::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0;
            width: 40px; height: 2px;
            background: var(--accent);
        }
        .footer-links { list-style: none; }
        .footer-links li { margin-bottom: 12px; }
        .footer-links a { color: #cbd5e1; text-decoration: none; transition: color 0.3s; }
        .footer-links a:hover { color: var(--accent); }
        .social-links { display: flex; gap: 16px; margin-top: 20px; }
        .social-link {
            display: flex; align-items: center; justify-content: center;
            width: 40px; height: 40px; border-radius: 50%;
            background: rgba(255,255,255,0.1);
            color: var(--light);
            text-decoration: none;
            transition: all 0.3s;
        }
        .social-link:hover { background: var(--accent); 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;
        }
        /* 回到顶部 */
        .back-to-top {
            position: fixed; bottom: 30px; right: 30px;
            width: 50px; height: 50px; border-radius: 50%;
            background: linear-gradient(to right, var(--accent), var(--secondary));
            color: white; border: none; cursor: pointer;
            display: flex; align-items: center; justify-content: center;
            font-size: 1.2rem; opacity: 0; visibility: hidden;
            transition: all 0.3s; z-index: 999;
        }
        .back-to-top.show { opacity: 1; visibility: visible; }
        .back-to-top:hover { transform: translateY(-5px); box-shadow: 0 10px 20px rgba(142,45,226,0.4); }
        /* 响应式 */
        @media (max-width: 1024px) {
            .hero-content { flex-direction: column; text-align: center; }
            .hero-text p { margin-left: auto; margin-right: auto; }
            .hero-buttons { justify-content: center; }
            .stats-grid, .features-grid, .tech-grid, .testimonials-grid, .scenarios-grid,
            .faq-grid, .footer-grid, .download-grid, .other-grid, .highlights-grid,
            .why-grid, .download-faq-grid { grid-template-columns: repeat(2,1fr); }
            .guide-steps { grid-template-columns: repeat(3,1fr); }
        }
        @media (max-width: 768px) {
            .nav-links { display: none; }
            .mobile-menu-btn { display: block; }
            .stats-grid, .features-grid, .tech-grid, .testimonials-grid, .scenarios-grid,
            .faq-grid, .footer-grid, .enterprise-features, .download-grid, .other-grid,
            .highlights-grid, .why-grid, .download-faq-grid, .guide-steps { grid-template-columns: 1fr; }
            .enterprise-content {
                flex-direction: column;
                padding: 30px;
                gap: 30px;
            }
            .enterprise-text, .enterprise-image {
                flex: 1 1 auto;
                width: 100%;
            }
            .enterprise-image img {
                width: 100%;
                max-width: 400px;
            }
            .hero-text h1 { font-size: 2.5rem; }
        }