:root {
            --primary: #165DFF;
            --secondary: #36CFFB;
            --dark: #1D2129;
            --light: #F2F3F5;
            --gray: #86909C;
            --white: #FFFFFF;
            --shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
            --gradient: linear-gradient(135deg, #165DFF 0%, #36CFFB 100%);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background-color: #f9fafb;
            color: var(--dark);
            line-height: 1.6;
        }
        
        /* 通用样式 */
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        .section {
            padding: 80px 0;
        }
        
        .section-title {
            font-size: 2.5rem;
            font-weight: 700;
            margin-bottom: 15px;
            text-align: center;
        }
        
        .section-subtitle {
            font-size: 1.2rem;
            color: var(--gray);
            text-align: center;
            max-width: 700px;
            margin: 0 auto 60px;
        }
        
        .btn {
            display: inline-block;
            padding: 12px 24px;
            background: var(--gradient);
            color: var(--white);
            border: none;
            border-radius: 6px;
            font-size: 1rem;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            text-decoration: none;
            text-align: center;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 10px 20px rgba(22, 93, 255, 0.2);
        }
        
        .btn-secondary {
            background: var(--white);
            color: var(--primary);
            border: 1px solid var(--primary);
        }
        
        /* 导航栏 */
        header {
            position: fixed;
            top: 0;
            left: 0;
            right: 0;
            background-color: rgba(255, 255, 255, 0.95);
            box-shadow: var(--shadow);
            z-index: 1000;
            transition: var(--transition);
        }
        
        .navbar {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 10px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            font-size: 1.5rem;
            font-weight: 700;
            color: var(--primary);
            text-decoration: none;
        }
        
        .logo span {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
            margin-left: 5px;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 500;
            transition: var(--transition);
        }
        
        .nav-links a:hover {
            color: var(--primary);
        }
        
        .mobile-toggle {
            display: none;
            font-size: 1.5rem;
            cursor: pointer;
        }
        
        /* 英雄区域 */
        .hero {
            padding-top: 150px;
            padding-bottom: 100px;
            background: linear-gradient(135deg, #f5f7fa 0%, #eef1f5 100%);
            position: relative;
            overflow: hidden;
        }
        
        .hero::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23165dff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
            z-index: 0;
        }
        
        .hero-content {
            display: flex;
            flex-wrap: wrap;
            align-items: center;
            position: relative;
            z-index: 1;
        }
        
        .hero-text {
            flex: 1 1 500px;
            margin-bottom: 40px;
        }
        
        .hero-text h1 {
            font-size: 3rem;
            font-weight: 800;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero-text h1 span {
            background: var(--gradient);
            -webkit-background-clip: text;
            background-clip: text;
            color: transparent;
        }
        
        .typing-text {
            font-size: 1.5rem;
            color: var(--primary);
            font-weight: 600;
            margin-bottom: 30px;
            min-height: 2.5rem;
        }
        
        .hero-text p {
            font-size: 1.1rem;
            color: var(--gray);
            margin-bottom: 30px;
            max-width: 600px;
        }
        
        .hero-buttons {
            display: flex;
            gap: 15px;
            flex-wrap: wrap;
        }
        
        .hero-video {
            flex: 1 1 500px;
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        
        .hero-video video {
            width: 100%;
            height: auto;
            display: block;
        }
        
        /* 功能展示区 */
        .features {
            background-color: var(--white);
        }
        
        .features-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background-color: var(--light);
            border-radius: 10px;
            padding: 30px;
            transition: var(--transition);
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
            box-shadow: var(--shadow);
        }
        
        .feature-icon {
            width: 60px;
            height: 60px;
            background: var(--gradient);
            border-radius: 10px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 20px;
            color: var(--white);
            font-size: 1.5rem;
        }
        
        .feature-title {
            font-size: 1.5rem;
            font-weight: 600;
            margin-bottom: 15px;
        }
        
        .feature-desc {
            color: var(--gray);
            line-height: 1.7;
        }
        
        /* 精选模板区 */
        .featured-templates {
            background-color: #f9fafb;
        }
        
        .templates-grid-small {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
            gap: 25px;
        }
        
        .template-small-card {
            background-color: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .template-small-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .template-small-image {
            width: 100%;
            height: 180px;
            overflow: hidden;
        }
        
        .template-small-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .template-small-card:hover .template-small-image img {
            transform: scale(1.05);
        }
        
        .template-small-content {
            padding: 15px;
        }
        
        .template-small-content h4 {
            font-size: 1.1rem;
            margin-bottom: 8px;
        }
        
        .template-small-content p {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 12px;
            display: -webkit-box;
            -webkit-line-clamp: 2;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .template-small-action {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .template-small-tags {
            font-size: 0.8rem;
            color: var(--primary);
        }
        
        /* 分隔页 */
        .separator {
            background: var(--gradient);
            color: var(--white);
            padding: 100px 0;
            text-align: center;
            position: relative;
            overflow: hidden;
        }
        
        .separator::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.1'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
        }
        
        .separator-content {
            position: relative;
            z-index: 1;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .separator h2 {
            font-size: 2.8rem;
            margin-bottom: 30px;
            font-weight: 800;
        }
        
        .separator p {
            font-size: 1.2rem;
            line-height: 1.8;
            opacity: 0.95;
        }
        
        /* 生成步骤 - 修改为横排布局 */
        .steps {
            background-color: var(--white);
        }
        
        .steps-container {
            display: flex;
            flex-wrap: wrap;
            justify-content: space-between;
            gap: 30px;
        }
        
        .step-item {
            flex: 1;
            min-width: 280px;
            display: flex;
            flex-direction: column;
            align-items: center;
            text-align: center;
            position: relative;
            padding: 0 20px;
        }
        
        .step-item:not(:last-child)::after {
            content: '';
            position: absolute;
            top: 50px;
            right: -15px;
            width: 30px;
            height: 2px;
            background-color: var(--primary);
        }
        
        .step-number {
            width: 100px;
            height: 100px;
            background: var(--gradient);
            border-radius: 50%;
            color: var(--white);
            font-size: 2rem;
            font-weight: 700;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-bottom: 30px;
            z-index: 1;
        }
        
        .step-content h3 {
            font-size: 1.5rem;
            margin-bottom: 15px;
        }
        
        .step-content p {
            font-size: 1rem;
            color: var(--gray);
            line-height: 1.6;
        }
        
        /* 模板库 */
        .template-library {
            margin-top: 40px;
        }
        
        .filter-bar {
            display: flex;
            flex-wrap: wrap;
            gap: 10px;
            margin-bottom: 30px;
            justify-content: center;
        }
        
        .filter-tag {
            padding: 8px 16px;
            background-color: var(--light);
            border-radius: 20px;
            font-size: 0.9rem;
            cursor: pointer;
            transition: var(--transition);
        }
        
        .filter-tag.active {
            background-color: var(--primary);
            color: var(--white);
        }
        
        .templates-grid {
            display: grid;
            grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
            gap: 30px;
        }
        
        .template-card {
            background-color: var(--white);
            border-radius: 10px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            display: none; /* 默认隐藏所有模板 */
        }
        
        .template-card.active {
            display: block; /* 只显示激活的模板 */
        }
        
        .template-card:hover {
            transform: translateY(-5px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .template-card-image {
            width: 100%;
            height: 200px;
            overflow: hidden;
        }
        
        .template-card-image img {
            width: 100%;
            height: 100%;
            object-fit: cover;
            transition: var(--transition);
        }
        
        .template-card:hover .template-card-image img {
            transform: scale(1.05);
        }
        
        .template-card-content {
            padding: 20px;
        }
        
        .template-card h4 {
            font-size: 1.2rem;
            margin-bottom: 10px;
        }
        
        .template-card p {
            color: var(--gray);
            font-size: 0.9rem;
            margin-bottom: 15px;
            display: -webkit-box;
            -webkit-line-clamp: 3;
            -webkit-box-orient: vertical;
            overflow: hidden;
        }
        
        .template-card-tags {
            display: flex;
            flex-wrap: wrap;
            gap: 5px;
        }
        
        .template-card-tag {
            padding: 3px 10px;
            background-color: var(--light);
            border-radius: 12px;
            font-size: 0.8rem;
            color: var(--gray);
        }
        
        /* 优势部分 */
        .advantages {
            background: var(--gradient);
            color: var(--white);
            text-align: center;
        }
        
        .advantages .section-subtitle {
            color: rgba(255, 255, 255, 0.8);
        }
        
        .advantages-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 30px;
            margin-top: 40px;
        }
        
        .advantage-item {
            padding: 20px;
        }
        
        .advantage-item .number {
            font-size: 3rem;
            font-weight: 700;
            margin-bottom: 15px;
        }
        
        .advantage-item p {
            font-size: 1.1rem;
            opacity: 0.9;
        }
        
        /* 底部信息栏 - 重新设计 */
        .footer {
            background-color: var(--dark);
            color: var(--white);
            padding: 60px 0 30px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: 1fr 1fr 1fr auto;
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-col h3 {
            font-size: 1.2rem;
            margin-bottom: 20px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-col h3::after {
            content: '';
            position: absolute;
            left: 0;
            bottom: 0;
            width: 40px;
            height: 3px;
            background-color: var(--primary);
        }
        
        .footer-col ul {
            list-style: none;
        }
        
        .footer-col ul li {
            margin-bottom: 10px;
        }
        
        .footer-col ul li a {
            color: var(--gray);
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-col ul li a:hover {
            color: var(--white);
            padding-left: 5px;
        }
        
        .contact-info {
            display: flex;
            align-items: center;
            margin-bottom: 15px;
        }
        
        .contact-info i {
            width: 24px;
            color: var(--primary);
            margin-right: 10px;
        }
        
        .qrcode-container {
            display: flex;
            flex-direction: column;
            gap: 20px;
        }
        
        .qrcode-item {
            text-align: center;
        }
        
        .qrcode-img {
            width: 120px;
            height: 120px;
            background-color: #fff;
            padding: 10px;
            border-radius: 8px;
            margin-bottom: 10px;
        }
        
        .qrcode-img img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }
        
        .qrcode-item p {
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        .friend-links-section {
            background-color: var(--dark);
            padding: 0 0 60px;
        }
        
        .friend-links-title {
            font-size: 1.2rem;
            font-weight: 600;
            margin-bottom: 20px;
            color: var(--white);
        }
        
        .friend-links {
            display: flex;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        .friend-links a {
            color: var(--gray);
            text-decoration: none;
            padding: 5px 10px;
            transition: var(--transition);
            border-radius: 4px;
            font-size: 0.9rem;
        }
        
        .friend-links a:hover {
            color: var(--primary);
            background-color: rgba(255, 255, 255, 0.05);
        }
        
        .footer-bottom {
            text-align: center;
            padding-top: 20px;
            border-top: 1px solid rgba(255, 255, 255, 0.1);
            color: var(--gray);
            font-size: 0.9rem;
        }
        
        /* 响应式设计 */
        @media (max-width: 992px) {
            .hero-text h1 {
                font-size: 2.5rem;
            }
            
            .section-title {
                font-size: 2rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr 1fr;
            }
        }
        
        @media (max-width: 768px) {
            .nav-links {
                position: fixed;
                top: 70px;
                left: -100%;
                flex-direction: column;
                background-color: var(--white);
                width: 100%;
                height: calc(100vh - 70px);
                padding: 30px;
                transition: var(--transition);
                box-shadow: 0 10px 10px rgba(0, 0, 0, 0.1);
            }
            
            .nav-links.active {
                left: 0;
            }
            
            .nav-links li {
                margin: 15px 0;
            }
            
            .mobile-toggle {
                display: block;
            }
            
            .hero {
                padding-top: 120px;
                padding-bottom: 80px;
            }
            
            .hero-text h1 {
                font-size: 2rem;
            }
            
            .typing-text {
                font-size: 1.2rem;
            }
            
            .section {
                padding: 60px 0;
            }
            
            .separator h2 {
                font-size: 2.2rem;
            }
            
            .step-item:not(:last-child)::after {
                display: none;
            }
        }
        
        @media (max-width: 576px) {
            .hero-text h1 {
                font-size: 1.8rem;
            }
            
            .section-title {
                font-size: 1.8rem;
            }
            
            .section-subtitle {
                font-size: 1rem;
            }
            
            .btn {
                width: 100%;
            }
            
            .advantages-grid {
                grid-template-columns: 1fr;
            }
            
            .separator h2 {
                font-size: 1.8rem;
            }
            
            .separator p {
                font-size: 1rem;
            }
            
            .step-number {
                width: 80px;
                height: 80px;
                font-size: 1.5rem;
            }
            
            .footer-content {
                grid-template-columns: 1fr;
            }
        }