:root {
            --primary: #2563eb;
            --primary-dark: #1d4ed8;
            --secondary: #0ea5e9;
            --accent: #10b981;
            --light: #f8fafc;
            --dark: #0f172a;
            --gray: #64748b;
            --light-gray: #e2e8f0;
            --shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Noto Sans SC', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f0f7ff 0%, #ffffff 100%);
            color: #334155;
            line-height: 1.6;
            overflow-x: hidden;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        /* 头部样式 */
        header {
            background: white;
            box-shadow: var(--shadow);
            padding: 15px 0;
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        .header-container {
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 12px;
        }
        
        .logo-icon {
            font-size: 2.5rem;
            color: var(--primary);
        }
        
        .logo-text {
            font-size: 1.8rem;
            font-weight: 700;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        nav a {
            color: var(--dark);
            text-decoration: none;
            font-weight: 600;
            font-size: 1.1rem;
            padding: 8px 0;
            position: relative;
            transition: var(--transition);
        }
        
        nav a:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 0;
            height: 3px;
            background: var(--primary);
            transition: var(--transition);
        }
        
        nav a:hover:after, 
        nav a.active:after {
            width: 100%;
        }
        
        .cta-button {
            background: linear-gradient(135deg, var(--accent) 0%, #059669 100%);
            color: white;
            padding: 12px 32px;
            border-radius: 50px;
            font-weight: 600;
            text-decoration: none;
            transition: var(--transition);
            display: inline-block;
            box-shadow: 0 4px 15px rgba(16, 185, 129, 0.3);
            border: none;
            cursor: pointer;
            font-size: 1rem;
            letter-spacing: 0.5px;
        }
        
        .cta-button:hover {
            transform: translateY(-3px);
            box-shadow: 0 6px 20px rgba(16, 185, 129, 0.4);
        }
        
        /* 英雄区域 */
        .hero {
            padding: 100px 0 80px;
            position: relative;
            overflow: hidden;
        }
        
        .hero-content {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 50px;
            align-items: center;
        }
        
        .hero-text {
            position: relative;
            z-index: 2;
        }
        
        .hero-text h1 {
            font-size: 3.5rem;
            line-height: 1.2;
            margin-bottom: 25px;
            color: var(--dark);
        }
        
        .hero-text h1 span {
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .hero-text p {
            font-size: 1.25rem;
            color: var(--gray);
            margin-bottom: 35px;
            max-width: 500px;
        }
        
        .hero-buttons {
            display: flex;
            gap: 20px;
        }
        
        .btn-secondary {
            background: white;
            color: var(--primary);
            border: 2px solid var(--primary);
            padding: 10px 30px;
            border-radius: 50px;
            font-weight: 600;
            transition: var(--transition);
        }
        
        .btn-secondary:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-3px);
        }
        
        .hero-image {
            position: relative;
            display: flex;
            justify-content: center;
            align-items: center;
        }
        
        .hero-image::before {
            content: '';
            position: absolute;
            width: 400px;
            height: 400px;
            background: linear-gradient(135deg, rgba(37, 99, 235, 0.1) 0%, rgba(14, 165, 233, 0.1) 100%);
            border-radius: 50%;
            z-index: 1;
        }
        
        .platform-icons {
            position: relative;
            z-index: 2;
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            max-width: 400px;
        }
        
        .platform-icon {
            background: white;
            border-radius: 16px;
            padding: 25px;
            text-align: center;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .platform-icon:hover {
            transform: translateY(-10px);
            box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
        }
        
        .platform-icon i {
            font-size: 2.5rem;
            margin-bottom: 15px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .platform-icon h3 {
            font-size: 1.1rem;
            color: var(--dark);
        }
        
        /* 服务套餐 */
        .packages {
            padding: 100px 0;
            background: white;
        }
        
        .section-title {
            text-align: center;
            margin-bottom: 60px;
        }
        
        .section-title h2 {
            font-size: 2.8rem;
            color: var(--dark);
            margin-bottom: 15px;
        }
        
        .section-title p {
            color: var(--gray);
            max-width: 700px;
            margin: 0 auto;
            font-size: 1.1rem;
            line-height: 1.7;
        }
        
        .package-cards {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(500px, 1fr));
            gap: 40px;
            margin-top: 50px;
        }
        
        .package-card {
            background: white;
            border-radius: 20px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
            border: 1px solid var(--light-gray);
            position: relative;
        }
        
        .package-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .package-header {
            padding: 35px 30px;
            text-align: center;
            color: white;
            position: relative;
        }
        
        .package-1 .package-header { 
            background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%);
        }
        
        .package-2 .package-header { 
            background: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%);
        }
        
        .package-badge {
            position: absolute;
            top: 20px;
            right: 20px;
            background: var(--accent);
            color: white;
            padding: 6px 18px;
            border-radius: 20px;
            font-size: 0.9rem;
            font-weight: 600;
            box-shadow: 0 4px 10px rgba(16, 185, 129, 0.3);
        }
        
        .package-card h3 {
            font-size: 1.8rem;
            margin-bottom: 10px;
        }
        
        .price {
            font-size: 2.8rem;
            font-weight: 700;
            margin: 15px 0;
        }
        
        .price-period {
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        .package-content {
            padding: 35px 30px;
        }
        
        .features {
            list-style: none;
            margin-bottom: 30px;
        }
        
        .features li {
            padding: 14px 0;
            border-bottom: 1px solid var(--light-gray);
            display: flex;
            align-items: center;
        }
        
        .features li:last-child {
            border-bottom: none;
        }
        
        .features li i {
            color: var(--accent);
            margin-right: 15px;
            font-size: 1.3rem;
            min-width: 30px;
        }
        
        .notes {
            background: #f8fafc;
            border-left: 4px solid var(--accent);
            padding: 25px;
            border-radius: 8px;
            margin: 30px 0;
        }
        
        .notes h3 {
            color: var(--dark);
            margin-bottom: 15px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .notes h3 i {
            color: var(--accent);
        }
        
        .notes ul {
            list-style: none;
            padding-left: 20px;
        }
        
        .notes li {
            margin-bottom: 12px;
            position: relative;
            padding-left: 30px;
        }
        
        .notes li:before {
            content: '•';
            color: var(--accent);
            font-size: 1.8rem;
            position: absolute;
            left: 0;
            top: -8px;
        }
        
        .note-link {
            color: var(--primary);
            text-decoration: none;
            font-weight: 600;
            border-bottom: 1px dashed var(--primary);
            transition: var(--transition);
        }
        
        .note-link:hover {
            color: var(--primary-dark);
            border-bottom: 1px solid var(--primary-dark);
        }
        
        .package-cta {
            display: block;
            text-align: center;
            margin-top: 20px;
        }
        
        /* 服务优势 */
        .advantages {
            padding: 100px 0;
            background: linear-gradient(to bottom, #f0f9ff, #e0f2fe);
        }
        
        .advantage-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .advantage-card {
            background: white;
            border-radius: 16px;
            padding: 35px 30px;
            box-shadow: var(--shadow);
            text-align: center;
            transition: var(--transition);
        }
        
        .advantage-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .advantage-icon {
            width: 80px;
            height: 80px;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 25px;
            color: white;
            font-size: 2.2rem;
        }
        
        .advantage-card h3 {
            font-size: 1.4rem;
            margin-bottom: 15px;
            color: var(--dark);
        }
        
        .advantage-card p {
            color: var(--gray);
            line-height: 1.7;
        }
        
        /* 案例展示 */
        .case-studies {
            padding: 100px 0;
            background: white;
        }
        
        .case-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 30px;
            margin-top: 50px;
        }
        
        .case-card {
            background: white;
            border-radius: 16px;
            overflow: hidden;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        
        .case-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
        }
        
        .case-header {
            padding: 25px;
            color: white;
        }
        
        .case-1 .case-header { background: linear-gradient(135deg, #3b82f6 0%, #1e40af 100%); }
        .case-2 .case-header { background: linear-gradient(135deg, #0ea5e9 0%, #0369a1 100%); }
        .case-3 .case-header { background: linear-gradient(135deg, #8b5cf6 0%, #7c3aed 100%); }
        
        .case-content {
            padding: 25px;
        }
        
        .stats {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 15px;
            margin: 25px 0;
        }
        
        .stat-item {
            text-align: center;
            padding: 15px;
            background: #f8fafc;
            border-radius: 12px;
        }
        
        .stat-value {
            font-size: 1.8rem;
            font-weight: 700;
            margin-bottom: 5px;
            color: var(--primary);
        }
        
        .stat-label {
            font-size: 0.9rem;
            color: var(--gray);
        }
        
        /* CTA区域 */
        .cta-section {
            padding: 100px 0;
            background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
            color: white;
            text-align: center;
        }
        
        .cta-section h2 {
            font-size: 2.8rem;
            margin-bottom: 20px;
        }
        
        .cta-section p {
            max-width: 700px;
            margin: 0 auto 40px;
            font-size: 1.2rem;
            opacity: 0.9;
        }
        
        /* 页脚 */
        footer {
            background: var(--dark);
            color: #cbd5e1;
            padding: 70px 0 30px;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 50px;
        }
        
        .footer-col h3 {
            color: white;
            font-size: 1.4rem;
            margin-bottom: 25px;
            position: relative;
            padding-bottom: 10px;
        }
        
        .footer-col h3:after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 0;
            width: 50px;
            height: 3px;
            background: var(--primary);
        }
        
        .footer-col ul {
            list-style: none;
        }
        
        .footer-col ul li {
            margin-bottom: 15px;
        }
        
        .footer-col a {
            color: #94a3b8;
            text-decoration: none;
            transition: var(--transition);
        }
        
        .footer-col a:hover {
            color: white;
            padding-left: 5px;
        }
        
        .contact-info li {
            display: flex;
            align-items: flex-start;
            gap: 12px;
            margin-bottom: 18px;
        }
        
        .contact-info i {
            color: var(--primary);
            margin-top: 5px;
            font-size: 1.2rem;
        }
        
        .copyright {
            text-align: center;
            padding-top: 30px;
            border-top: 1px solid #334155;
            font-size: 0.9rem;
            color: #94a3b8;
        }
        
        /* 响应式调整 */
        @media (max-width: 1024px) {
            .hero-content {
                grid-template-columns: 1fr;
                text-align: center;
            }
            
            .hero-text p {
                margin: 0 auto 35px;
            }
            
            .hero-buttons {
                justify-content: center;
            }
            
            .hero-image::before {
                width: 300px;
                height: 300px;
            }
        }
        
        @media (max-width: 768px) {
            .header-container {
                flex-direction: column;
                gap: 20px;
            }
            
            nav ul {
                flex-wrap: wrap;
                justify-content: center;
            }
            
            .hero-text h1 {
                font-size: 2.8rem;
            }
            
            .hero-buttons {
                flex-direction: column;
                align-items: center;
            }
            
            .package-cards {
                grid-template-columns: 1fr;
            }
            
            .package-card {
                max-width: 100%;
            }
        }