* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        
        body {
            font-family: 'Arial', sans-serif;
            line-height: 1.6;
            color: #333;
        }
        
        .container {
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 20px;
        }
        
        header {
            background: #fff;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            position: sticky;
            top: 0;
            z-index: 1000;
        }
        
        nav {
            display: flex;
            justify-content: space-between;
            align-items: center;
            padding: 20px 0;
        }
        
        .logo {
            display: flex;
            align-items: center;
            text-decoration: none;
        }

        .logo img {
            height: 36px;
            width: auto;
            display: block;
        }
        
        .nav-links {
            display: flex;
            list-style: none;
        }
        
        .nav-links li {
            margin-left: 30px;
        }
        
        .nav-links a {
            text-decoration: none;
            color: #333;
            font-weight: 500;
        }
        
        .btn {
            display: inline-block;
            background: #4CAF50;
            color: white;
            padding: 10px 20px;
            border: none;
            border-radius: 4px;
            cursor: pointer;
            font-weight: 500;
            text-decoration: none;
        }

        a.btn,
        a.btn:hover,
        a.btn:visited,
        a.btn:active {
            color: #fff;
            text-decoration: none;
        }

        .pricing-email-note {
            margin-top: 28px;
            text-align: center;
            font-size: 15px;
            color: #666;
        }

        .pricing-email-note a {
            color: #4CAF50;
            font-weight: 600;
            text-decoration: none;
        }

        .pricing-email-note a:hover {
            text-decoration: underline;
        }
        
        .hero {
            background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
            color: white;
            padding: 80px 0;
            text-align: center;
        }
        
        .hero h1 {
            font-size: 36px;
            margin-bottom: 20px;
        }

        .hero-pricing-note {
            margin-top: 12px;
            font-size: 15px;
            opacity: .92;
        }
        
        .pricing-section {
            padding: 100px 0;
            background: #f9f9f9;
        }
        
        .pricing-section h2 {
            text-align: center;
            font-size: 32px;
            margin-bottom: 20px;
        }
        
        .pricing-section p {
            text-align: center;
            font-size: 16px;
            margin-bottom: 60px;
            color: #666;
            max-width: 800px;
            margin-left: auto;
            margin-right: auto;
        }
        
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
            gap: 40px;
            margin-bottom: 80px;
        }
        
        .pricing-card {
            background: white;
            padding: 40px;
            border-radius: 8px;
            box-shadow: 0 2px 10px rgba(0,0,0,0.1);
            text-align: center;
            transition: transform 0.3s ease;
        }
        
        .pricing-card:hover {
            transform: translateY(-10px);
        }
        
        .pricing-card.featured {
            border: 2px solid #4CAF50;
            position: relative;
        }
        
        .pricing-card.featured:before {
            content: '推荐';
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            background: #4CAF50;
            color: white;
            padding: 5px 20px;
            border-radius: 20px;
            font-size: 14px;
            font-weight: bold;
        }
        
        .pricing-card h3 {
            font-size: 24px;
            margin-bottom: 10px;
        }
        
        .pricing-card .price {
            font-size: 36px;
            font-weight: bold;
            margin-bottom: 10px;
        }
        
        .pricing-card .price-unit {
            font-size: 14px;
            color: #666;
            margin-bottom: 30px;
        }
        
        .pricing-card ul {
            list-style: none;
            margin-bottom: 40px;
            text-align: left;
        }
        
        .pricing-card ul li {
            margin-bottom: 15px;
            padding-left: 25px;
            position: relative;
        }
        
        .pricing-card ul li:before {
            content: '✓';
            position: absolute;
            left: 0;
            color: #4CAF50;
            font-weight: bold;
        }
        
        .pricing-card ul li.disabled {
            color: #999;
        }
        
        .pricing-card ul li.disabled:before {
            content: '✗';
            color: #999;
        }
        
        .faq-section {
            padding: 100px 0;
            background: white;
        }
        
        .faq-section h2 {
            text-align: center;
            font-size: 32px;
            margin-bottom: 60px;
        }
        
        .faq-item {
            margin-bottom: 20px;
            border: 1px solid #eee;
            border-radius: 8px;
            overflow: hidden;
        }
        
        .faq-question {
            background: #f9f9f9;
            padding: 20px;
            cursor: pointer;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .faq-question h3 {
            font-size: 18px;
            font-weight: 500;
        }
        
        .faq-answer {
            padding: 0 20px;
            max-height: 0;
            overflow: hidden;
            transition: max-height 0.3s ease, padding 0.3s ease;
        }
        
        .faq-answer.active {
            padding: 20px;
            max-height: 200px;
        }
        
        footer {
            background: #333;
            color: white;
            padding: 60px 0;
        }
        
        .footer-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
        }
        
        .footer-grid h4 {
            font-size: 18px;
            margin-bottom: 20px;
        }
        
        .footer-grid ul {
            list-style: none;
        }
        
        .footer-grid ul li {
            margin-bottom: 10px;
        }
        
        .footer-grid ul li a {
            color: #ccc;
            text-decoration: none;
        }
        
        .footer-bottom {
            text-align: center;
            margin-top: 40px;
            padding-top: 20px;
            border-top: 1px solid #555;
        }
        
        @media (max-width: 768px) {
            .nav-links {
                display: none;
            }
            
            .pricing-grid {
                grid-template-columns: 1fr;
            }
        }