:root {
            --primary-color: #00a8ff;
            --secondary-color: #9c88ff;
            --accent-color: #f368e0;
            --dark-bg: #0d0d0d;
            --darker-bg: #050505;
            --card-bg: #1c1c1e;
            --text-color: #ffffff;
            --text-secondary: #8e8e93;
            --border-color: #2c2c2e;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background-color: var(--dark-bg);
            color: var(--text-color);
            line-height: 1.6;
            overflow-x: hidden;
            position: relative;
        }
        
        /* 光效主题背景 */
        .light-bg {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -2;
            overflow: hidden;
            background: linear-gradient(135deg, #001a33 0%, #003366 50%, #000d1a 100%);
        }
        
        .light-beam {
            position: absolute;
            width: 150%;
            height: 100px;
            background: linear-gradient(90deg, transparent, rgba(0, 168, 255, 0.3), transparent);
            transform: rotate(-45deg);
            animation: beamMove 20s linear infinite;
        }
        
        .light-beam:nth-child(2) {
            top: 30%;
            animation: beamMove 15s linear infinite reverse;
            opacity: 0.4;
        }
        
        .light-beam:nth-child(3) {
            top: 70%;
            animation: beamMove 25s linear infinite;
            opacity: 0.2;
        }
        
        @keyframes beamMove {
            0% { transform: rotate(-45deg) translateX(-100%); }
            100% { transform: rotate(-45deg) translateX(100%); }
        }
        
        /* 背景动画元素 */
        .bg-animation {
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            z-index: -1;
            overflow: hidden;
        }
        
        .particles {
            position: absolute;
            width: 100%;
            height: 100%;
        }
        
        .particle {
            position: absolute;
            background: radial-gradient(circle, var(--primary-color), transparent);
            border-radius: 50%;
            opacity: 0.3;
            animation: particleFloat 15s infinite linear;
        }
        
        @keyframes particleFloat {
            0%, 100% { transform: translate(0, 0) scale(1); opacity: 0.3; }
            25% { transform: translate(20px, -20px) scale(1.2); opacity: 0.5; }
            50% { transform: translate(-15px, 15px) scale(0.8); opacity: 0.2; }
            75% { transform: translate(-20px, -15px) scale(1.1); opacity: 0.4; }
        }
        
        .grid-lines {
            position: absolute;
            width: 200%;
            height: 200%;
            top: -50%;
            left: -50%;
            background-image: 
                linear-gradient(rgba(0, 168, 255, 0.1) 1px, transparent 1px),
                linear-gradient(90deg, rgba(0, 168, 255, 0.1) 1px, transparent 1px);
            background-size: 60px 60px;
            animation: gridMove 30s linear infinite;
            transform: perspective(500px) rotateX(60deg);
        }
        
        @keyframes gridMove {
            0% { transform: perspective(500px) rotateX(60deg) translateY(0); }
            100% { transform: perspective(500px) rotateX(60deg) translateY(60px); }
        }
        
        /* 导航栏 */
        header {
            background-color: rgba(13, 13, 13, 0.85);
            backdrop-filter: blur(15px);
            position: fixed;
            width: 100%;
            z-index: 1000;
            border-bottom: 1px solid var(--border-color);
            transition: all 0.3s ease;
        }
        
        header.scrolled {
            background-color: rgba(13, 13, 13, 0.95);
            box-shadow: 0 5px 20px rgba(0, 0, 0, 0.3);
        }
        
        .nav-container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            height: 70px;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 24px;
            font-weight: 700;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            transition: transform 0.3s;
        }
        
        .logo:hover {
            transform: scale(1.05);
        }
        
        .logo-icon {
            margin-right: 10px;
            font-size: 28px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            color: var(--text-color);
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
            position: relative;
        }
        
        .nav-links a:hover {
            color: var(--primary-color);
        }
        
        .nav-links a::after {
            content: '';
            position: absolute;
            width: 0;
            height: 2px;
            bottom: -5px;
            left: 0;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            transition: width 0.3s;
        }
        
        .nav-links a:hover::after {
            width: 100%;
        }
        
        .cta-button {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            color: white;
            border: none;
            padding: 10px 25px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: transform 0.3s, box-shadow 0.3s;
            text-decoration: none;
            display: inline-block;
            position: relative;
            overflow: hidden;
        }
        
        .cta-button::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }
        
        .cta-button:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(0, 168, 255, 0.4);
        }
        
        .cta-button:hover::before {
            left: 100%;
        }
        
        /* 主要内容区域 */
        main {
            padding-top: 70px;
        }
        
        .hero {
            padding: 100px 20px;
            text-align: center;
            max-width: 1000px;
            margin: 0 auto;
            position: relative;
        }
        
        .hero h1 {
            font-size: 3.5rem;
            margin-bottom: 20px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            line-height: 1.2;
            animation: fadeInUp 1s ease-out;
        }
        
        .hero p {
            font-size: 1.2rem;
            color: var(--text-secondary);
            max-width: 700px;
            margin: 0 auto 40px;
            animation: fadeInUp 1s ease-out 0.2s both;
        }
        
        .hero-buttons {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 40px;
            animation: fadeInUp 1s ease-out 0.4s both;
        }
        
        .secondary-button {
            background: transparent;
            color: var(--text-color);
            border: 1px solid var(--border-color);
            padding: 10px 25px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: all 0.3s;
            text-decoration: none;
            display: inline-block;
        }
        
        .secondary-button:hover {
            border-color: var(--primary-color);
            color: var(--primary-color);
            transform: translateY(-2px);
        }
        
        /* 特性部分 */
        .features {
            padding: 100px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.5rem;
            margin-bottom: 15px;
            position: relative;
            display: inline-block;
        }
        
        .section-title h2::after {
            content: '';
            position: absolute;
            width: 60px;
            height: 3px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
        }
        
        .section-title p {
            color: var(--text-secondary);
            max-width: 600px;
            margin: 0 auto;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: #0077cc;
            border-radius: 15px;
            padding: 30px;
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid #0077cc;
            position: relative;
            overflow: hidden;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.4);
        }
        
        .feature-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
        }
        
        .feature-icon {
            width: 60px;
            height: 60px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            font-size: 24px;
            transition: transform 0.3s;
        }
        
        .feature-card:hover .feature-icon {
            transform: scale(1.1) rotate(5deg);
        }
        
        .feature-card h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        
        .feature-card p {
            color: #fff;
        }
        
        /* 应用场景部分 */
        .use-cases {
            padding: 100px 20px;
            background-color: var(--darker-bg);
        }
        
        .use-cases-container {
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .tabs {
            display: flex;
            justify-content: center;
            margin-bottom: 50px;
            border-bottom: 1px solid var(--border-color);
        }
        
        .tab {
            padding: 15px 30px;
            cursor: pointer;
            font-weight: 600;
            border-bottom: 3px solid transparent;
            transition: all 0.3s;
            position: relative;
        }
        
        .tab.active {
            border-bottom: 3px solid var(--primary-color);
            color: var(--primary-color);
        }
        
        .tab-content {
            display: none;
            animation: fadeIn 0.5s ease-out;
        }
        
        .tab-content.active {
            display: block;
        }
        
        .use-case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
        }
        
        .use-case-card {
            background-color: #0077cc;
            border-radius: 15px;
            padding: 30px;
            text-align: center;
            transition: transform 0.3s, box-shadow 0.3s;
            border: 1px solid var(--border-color);
            position: relative;
            overflow: hidden;
        }
        
        .use-case-card::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(135deg, rgba(0, 168, 255, 0.1), rgba(156, 136, 255, 0.1));
            opacity: 0;
            transition: opacity 0.3s;
        }
        
        .use-case-card:hover::before {
            opacity: 1;
        }
        
        .use-case-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
        }
        
        .use-case-icon {
            width: 80px;
            height: 80px;
            margin: 0 auto 20px;
            background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 30px;
            transition: transform 0.3s;
            position: relative;
            z-index: 1;
        }
        
        .use-case-card:hover .use-case-icon {
            transform: scale(1.1) rotate(10deg);
        }
        
        /* 联系方式部分 */
        .contact {
            padding: 100px 20px;
            max-width: 1200px;
            margin: 0 auto;
        }
        
        .contact-container {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 50px;
            align-items: center;
        }
        
        .contact-info h3 {
            font-size: 2rem;
            margin-bottom: 20px;
        }
        
        .contact-info p {
            color: var(--text-secondary);
            margin-bottom: 30px;
        }
        
        .contact-methods {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .contact-method {
            display: flex;
            align-items: center;
            transition: transform 0.3s;
        }
        
        .contact-method:hover {
            transform: translateX(10px);
        }
        
        .contact-icon {
            width: 50px;
            height: 50px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 15px;
            font-size: 20px;
            transition: transform 0.3s;
        }
        
        .contact-method:hover .contact-icon {
            transform: scale(1.1);
        }
        
        .qr-code {
            display: flex;
            justify-content: center;
            flex-direction: column;
            align-items: center;
        }
        
        .qr-placeholder {
            width: 200px;
            height: 200px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--text-secondary);
            transition: transform 0.3s, box-shadow 0.3s;
            overflow: hidden;
        }
        
        .qr-placeholder:hover {
            transform: scale(1.05);
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.3);
        }
        
        .qr-placeholder img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 10px;
            transition: transform 0.5s;
        }
        
        .qr-placeholder:hover img {
            transform: scale(1.1);
        }
        
        /* SEO文章区域 */
        .seo-articles {
            padding: 80px 20px;
            background-color: var(--darker-bg);
        }
        
        .seo-container {
            max-width: 1000px;
            margin: 0 auto;
        }
        
        .article-categories {
            display: flex;
            justify-content: center;
            margin-bottom: 40px;
            flex-wrap: wrap;
            gap: 10px;
        }
        
        .category-btn {
            padding: 10px 20px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 30px;
            color: var(--text-color);
            cursor: pointer;
            transition: all 0.3s;
        }
        
        .category-btn.active {
            background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
            border-color: transparent;
        }
        
        .category-btn:hover:not(.active) {
            border-color: var(--primary-color);
            color: var(--primary-color);
        }
        
        .accordion {
            border: 1px solid var(--border-color);
            border-radius: 10px;
            overflow: hidden;
        }
        
        .accordion-item {
            border-bottom: 1px solid var(--border-color);
        }
        
        .accordion-item:last-child {
            border-bottom: none;
        }
        
        .accordion-header {
            padding: 20px;
            background-color: var(--card-bg);
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
            transition: background-color 0.3s;
        }
        
        .accordion-header:hover {
            background-color: rgba(28, 28, 30, 0.8);
        }
        
        .accordion-content {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s, padding 0.3s;
            background-color: var(--dark-bg);
        }
        
        .accordion-content.active {
            padding: 20px;
            max-height: 1000px;
        }
        
        /* 页脚 */
        footer {
            background-color: var(--darker-bg);
            padding: 50px 20px 20px;
            border-top: 1px solid var(--border-color);
        }
        
        .footer-container {
            max-width: 1200px;
            margin: 0 auto;
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h4 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            color: var(--primary-color);
        }
        
        .footer-links {
            list-style: none;
        }
        
        .footer-links li {
            margin-bottom: 10px;
        }
        
        .footer-links a {
            color: var(--text-secondary);
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-links a:hover {
            color: var(--primary-color);
        }
        
        .footer-contact {
            display: flex;
            flex-direction: column;
            gap: 15px;
        }
        
        .footer-contact-item {
            display: flex;
            align-items: center;
        }
        
        .footer-contact-icon {
            width: 30px;
            height: 30px;
            background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
            border-radius: 6px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 10px;
            font-size: 14px;
        }
        
        .footer-qr {
            display: flex;
            flex-direction: column;
            align-items: center;
        }
        
        .footer-qr-code {
            width: 150px;
            height: 150px;
            background-color: var(--card-bg);
            border: 1px solid var(--border-color);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 10px;
            color: var(--text-secondary);
            transition: transform 0.3s;
            overflow: hidden;
        }
        
        .footer-qr-code:hover {
            transform: scale(1.05);
        }
        
        .footer-qr-code img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            border-radius: 10px;
        }
        
        .friend-link {
            margin-top: 20px;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
        }
        
        .friend-link a {
            color: var(--primary-color);
            text-decoration: none;
            font-weight: 500;
        }
        
        .friend-link a:hover {
            text-decoration: underline;
        }
        
        .legal {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid var(--border-color);
            color: var(--text-secondary);
            font-size: 0.9rem;
        }
        
        /* 动画效果 */
        @keyframes fadeInUp {
            from {
                opacity: 0;
                transform: translateY(30px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        
        @keyframes fadeIn {
            from {
                opacity: 0;
            }
            to {
                opacity: 1;
            }
        }
        
        /* 滚动动画 */
        .fade-in {
            opacity: 0;
            transform: translateY(30px);
            transition: opacity 0.6s, transform 0.6s;
        }
        
        .fade-in.visible {
            opacity: 1;
            transform: translateY(0);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .hero h1 {
                font-size: 2.5rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .tabs {
                flex-direction: column;
                align-items: center;
            }
            
            .tab {
                width: 100%;
                text-align: center;
            }
            
            .footer-container {
                grid-template-columns: 1fr;
            }
        }