* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
        }
        
        body {
            background: linear-gradient(rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.7)), url('../static/bg.webp');
            background-size: cover;
            background-position: center;
            color: #fff;
            line-height: 1.6;
        }
        
        .container {
            max-width: 1200px;
            margin: 0 auto;
            padding: 0 5px;
        }
        
        header {
            padding: 30px 0;
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        
        .logo {
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .logo i {
            font-size: 36px;
            color: #4CAF50;
        }
        
        .logo h1 {
            font-size: 28px;
            font-weight: 700;
        }
        
        .logo span {
            color: #4CAF50;
        }
        
        nav ul {
            display: flex;
            list-style: none;
            gap: 30px;
        }
        
        nav a {
            color: #fff;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s;
        }
        
        nav a:hover {
            color: #4CAF50;
        }
        
        .hero {
            text-align: center;
            padding: 20px 0 20px;
        }
        
        .hero h2 {
            font-size: 28px;
            margin-bottom: 20px;
            line-height: 1.2;
        }
        
        .hero p {
            font-size: 20px;
            max-width: 700px;
            margin: 0 auto 40px;
            color: #e0e0e0;
        }
        
        .stock-input-section {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 40px;
            max-width: 800px;
            margin: 0 auto;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
        }
        
        .input-group {
            display: flex;
            gap: 15px;
            margin-bottom: 30px;
        }
        
        .stock-input {
            flex: 1;
            padding: 15px 20px;
            border: none;
            border-radius: 8px;
            font-size: 18px;
            background: rgba(255, 255, 255, 0.9);
        }
        
        .analyze-btn {
            padding: 15px 30px;
            background: #4CAF50;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
        }
        
        .analyze-btn:hover {
            background: #45a049;
        }
        
        .stock-examples {
            display: flex;
            justify-content: center;
            gap: 20px;
            margin-top: 20px;
        }
        
        .stock-example {
            background: rgba(255, 255, 255, 0.1);
            padding: 10px 20px;
            border-radius: 6px;
            font-size: 14px;
            cursor: pointer;
            transition: background 0.3s;
        }
        
        .stock-example:hover {
            background: rgba(255, 255, 255, 0.2);
        }
        
        .result-section {
            display: none;
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 15px;
            padding: 30px;
            margin-top: 30px;
            text-align: center;
        }
        
        .result-icon {
            font-size: 60px;
            color: #4CAF50;
            margin-bottom: 20px;
        }
        
        .result-section h3 {
            font-size: 28px;
            margin-bottom: 15px;
        }
        
        .result-section p {
            margin-bottom: 25px;
            font-size: 18px;
        }
        
        .ai-chat-btn {
            padding: 15px 40px;
            background: #2196F3;
            color: white;
            border: none;
            border-radius: 8px;
            font-size: 18px;
            font-weight: 600;
            cursor: pointer;
            transition: background 0.3s;
            display: inline-flex;
            align-items: center;
            gap: 10px;
        }
        
        .ai-chat-btn:hover {
            background: #0b7dda;
        }
        
        .features {
            padding: 80px 0;
        }
        
        .features h2 {
            text-align: center;
            font-size: 36px;
            margin-bottom: 50px;
        }
        
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
            gap: 30px;
        }
        
        .feature-card {
            background: rgba(255, 255, 255, 0.1);
            backdrop-filter: blur(10px);
            border-radius: 12px;
            padding: 30px;
            text-align: center;
            transition: transform 0.3s;
        }
        
        .feature-card:hover {
            transform: translateY(-10px);
        }
        
        .feature-icon {
            font-size: 40px;
            color: #4CAF50;
            margin-bottom: 20px;
        }
        
        .feature-card h3 {
            font-size: 22px;
            margin-bottom: 15px;
        }
        
        .feature-card p {
            color: #e0e0e0;
        }
        
        footer {
            background: rgba(0, 0, 0, 0.8);
            padding: 50px 0 20px;
            margin-top: 50px;
        }
        
        .footer-content {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 40px;
            margin-bottom: 40px;
        }
        
        .footer-column h4 {
            font-size: 18px;
            margin-bottom: 20px;
            color: #4CAF50;
        }
        
        .footer-column ul {
            list-style: none;
        }
        
        .footer-column ul li {
            margin-bottom: 10px;
        }
        
        .footer-column a {
            color: #ccc;
            text-decoration: none;
            transition: color 0.3s;
        }
        
        .footer-column a:hover {
            color: #4CAF50;
        }
        
        .disclaimer {
            border-top: 1px solid #444;
            padding-top: 20px;
            text-align: center;
            font-size: 14px;
            color: #aaa;
        }
        
        .disclaimer a {
            color: #4CAF50;
            text-decoration: none;
        }
        
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.8);
            z-index: 1000;
            overflow-y: auto;
        }
        
        .modal-content {
            background: #1e1e1e;
            margin: 5% auto;
            padding: 30px;
            border-radius: 10px;
            max-width: 800px;
            position: relative;
        }
        
        .close-btn {
            position: absolute;
            top: 10px;
            right: 20px;
            font-size: 24px;
            cursor: pointer;
            color: #aaa;
        }
        
        .close-btn:hover {
            color: #fff;
        }
        
        .modal h2 {
            margin-bottom: 5px;
            color: #4CAF50;
        }
        
        .modal p {
            margin-bottom: 15px;
            line-height: 1.6;
        }
        
        /* 移动端优化样式 */
        @media (max-width: 768px) {
            .hero h2 {
                font-size: 36px;
            }
            
            .input-group {
                flex-direction: column;
            }
            
            .stock-examples {
                flex-wrap: wrap;
            }
            
            nav ul {
                gap: 15px;
            }
            
            /* 移动端结果弹窗样式 */
            .result-modal {
                display: none;
                position: fixed;
                top: 0;
                left: 0;
                width: 100%;
                height: 100%;
                background: rgba(0, 0, 0, 0.9);
                z-index: 1001;
                overflow-y: auto;
                padding: 20px;
            }
            
            .result-modal-content {
                background: rgba(255, 255, 255, 0.1);
                backdrop-filter: blur(10px);
                border-radius: 15px;
                padding: 30px;
                margin: 10% auto;
                max-width: 90%;
                text-align: center;
                position: relative;
                box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
            }
            
            .result-modal-close {
                position: absolute;
                top: 15px;
                right: 15px;
                font-size: 24px;
                cursor: pointer;
                color: #aaa;
                background: none;
                border: none;
            }
            
            .result-modal-close:hover {
                color: #fff;
            }
            
            .result-modal-icon {
                font-size: 60px;
                color: #4CAF50;
                margin-bottom: 20px;
            }
            
            .result-modal h3 {
                font-size: 24px;
                margin-bottom: 15px;
            }
            
            .result-modal p {
                margin-bottom: 25px;
                font-size: 16px;
                line-height: 1.5;
            }
            
            .result-modal .ai-chat-btn {
                width: 100%;
                justify-content: center;
                padding: 15px 20px;
            }
            
            /* 隐藏桌面版结果区域 */
            .result-section {
                display: none !important;
            }
        }
        
        /* 桌面端样式 */
        @media (min-width: 769px) {
            .result-modal {
                display: none !important;
            }
        }