* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            color: #333;
            line-height: 1.6;
            padding: 20px;
            min-height: 100vh;
        }
        
        .container {
            max-width: 100%;
            margin: 0 auto;
            padding: 30px;
        }
        
        header {
            text-align: center;
            margin-bottom: 50px;
            padding: 20px;
        }
        
        h1 {
            font-size: 42px;
            color: #2B73DA;
            margin-bottom: 15px;
            font-weight: 700;
            text-transform: uppercase;
            letter-spacing: 1px;
            position: relative;
            display: inline-block;
        }
        
        h1:after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 80px;
            height: 4px;
            background-color: #2B73DA;
            border-radius: 2px;
        }
        
        .subtitle {
            font-size: 20px;
            color: #666;
            max-width: 100%;
            margin: 30px auto 0;
        }
        
        .faq-container {
            background: white;
            border-radius: 15px;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            overflow: hidden;
        }
        
        .faq-item {
            border-bottom: 1px solid #eaeaea;
            transition: all 0.3s ease;
        }
        
        .faq-item:last-child {
            border-bottom: none;
        }
        
        .faq-question {
            padding: 25px 30px;
            cursor: pointer;
            display: flex;
            align-items: center;
            justify-content: space-between;
            background: white;
            transition: background 0.3s ease;
        }
        
        .faq-question:hover {
            background: #f8fafd;
        }
        
        .faq-question h3 {
            font-size: 20px;
            color: #2B73DA;
            font-weight: 600;
            margin: 0;
            flex: 1;
        }
        
        .faq-icon {
            color: #2B73DA;
            font-size: 20px;
            transition: transform 0.3s ease;
            margin-left: 15px;
        }
        
        .faq-answer {
            padding: 0 30px;
            max-height: 0;
            overflow: hidden;
            transition: all 0.3s ease;
            background: #f8fafd;
        }
        
        .faq-answer p {
            padding: 0 0 25px;
            font-size: 17px;
            color: #555;
            line-height: 1.7;
        }
        
        .faq-item.active .faq-answer {
            max-height: 500px;
            padding: 0 30px 25px;
        }
        
        .faq-item.active .faq-icon {
            transform: rotate(180deg);
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            h1 {
                font-size: 32px;
            }
            
            .subtitle {
                font-size: 18px;
            }
            
            .faq-question {
                padding: 20px;
            }
            
            .faq-question h3 {
                font-size: 18px;
            }
            
            .faq-answer p {
                font-size: 16px;
            }
        }
        
        @media (max-width: 480px) {
            .container {
                padding: 15px;
            }
            
            header {
                margin-bottom: 30px;
            }
            
            h1 {
                font-size: 28px;
            }
            
            .faq-question {
                padding: 18px 15px;
            }
            
            .faq-question h3 {
                font-size: 16px;
            }
            
            .faq-answer {
                padding: 0 15px;
            }
            
            .faq-item.active .faq-answer {
                padding: 0 15px 20px;
            }
        }