* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background-color: #0a0a0a;
            color: #f0e6d2;
            line-height: 1.6;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background-image: 
                radial-gradient(circle at 10% 20%, rgba(212, 175, 55, 0.05) 0%, transparent 20%),
                radial-gradient(circle at 90% 80%, rgba(212, 175, 55, 0.05) 0%, transparent 20%);
            padding: 20px 0;
        }
        
        /* 容器宽度设为700px并居中 */
        .container {
            width: 100%;
            max-width: 700px;
            margin: 0 auto;
            padding: 0 20px;
            flex: 1;
        }
        
        /* 头部样式 */
        .header {
            text-align: center;
            margin-bottom: 30px;
            padding-bottom: 20px;
            border-bottom: 1px solid rgba(212, 175, 55, 0.3);
            position: relative;
        }
        
        .header::after {
            content: '';
            position: absolute;
            bottom: -2px;
            left: 50%;
            transform: translateX(-50%);
            width: 120px;
            height: 3px;
            background: linear-gradient(90deg, transparent, #d4af37, transparent);
        }
        
        .main-title {
            font-size: 2.3rem;
            font-weight: 800;
            background: linear-gradient(135deg, #d4af37, #f7ef8a);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            margin-bottom: 8px;
            letter-spacing: 1.5px;
            text-shadow: 0 5px 15px rgba(212, 175, 55, 0.2);
        }
        
        .subtitle {
            font-size: 1.1rem;
            color: #b8a05c;
            font-weight: 300;
            letter-spacing: 0.8px;
        }
        
        /* 主要内容区域 - 改为单列布局 */
        .content-wrapper {
            display: flex;
            flex-direction: column;
            gap: 30px;
            margin-bottom: 40px;
        }
        
        /* 功能列表样式 */
        .features {
            background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
            border-radius: 18px;
            padding: 30px;
            box-shadow: 
                0 8px 25px rgba(0, 0, 0, 0.7),
                inset 0 1px 0 rgba(212, 175, 55, 0.1);
            border: 1px solid rgba(212, 175, 55, 0.15);
            position: relative;
            overflow: hidden;
        }
        
        .features::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #d4af37, #ffd700, #d4af37);
        }
        
        .features-title {
            font-size: 1.4rem;
            color: #d4af37;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }
        
        .features-title i {
            font-size: 1.6rem;
            color: #ffd700;
        }
        
        .features-list {
            list-style: none;
        }
        
        .feature-item {
            padding: 16px 0;
            border-bottom: 1px solid rgba(212, 175, 55, 0.1);
            display: flex;
            align-items: flex-start;
            gap: 12px;
            transition: all 0.3s;
        }
        
        .feature-item:hover {
            transform: translateX(5px);
            border-bottom-color: rgba(212, 175, 55, 0.3);
        }
        
        .feature-item:last-child {
            border-bottom: none;
        }
        
        .feature-icon {
            color: #ffd700;
            font-size: 1.2rem;
            margin-top: 3px;
            width: 22px;
            text-align: center;
            flex-shrink: 0;
        }
        
        .feature-text {
            flex: 1;
        }
        
        .feature-main {
            font-weight: 600;
            margin-bottom: 5px;
            color: #f0e6d2;
            font-size: 1.05rem;
        }
        
        .feature-desc {
            font-size: 0.9rem;
            color: #b8a05c;
            line-height: 1.5;
        }
        
        /* 分析区域样式 */
        .analysis-section {
            background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
            border-radius: 18px;
            padding: 30px;
            box-shadow: 
                0 8px 25px rgba(0, 0, 0, 0.7),
                inset 0 1px 0 rgba(212, 175, 55, 0.1);
            border: 1px solid rgba(212, 175, 55, 0.15);
            position: relative;
            overflow: hidden;
        }
        
        .analysis-section::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #d4af37, #ffd700, #d4af37);
        }
        
        .analysis-title {
            font-size: 1.4rem;
            color: #d4af37;
            margin-bottom: 25px;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
        }
        
        .analysis-title i {
            font-size: 1.6rem;
            color: #ffd700;
        }
        
        .code-input-container {
            margin-bottom: 25px;
        }
        
        .input-label {
            display: block;
            margin-bottom: 10px;
            color: #d4af37;
            font-size: 1.1rem;
            font-weight: 500;
        }
        
        .input-wrapper {
            display: flex;
            gap: 10px;
        }
        
        .code-input {
            flex: 1;
            background-color: #1a1a1a;
            border: 1px solid rgba(212, 175, 55, 0.3);
            border-radius: 10px;
            padding: 16px 18px;
            color: #f0e6d2;
            font-size: 1.1rem;
            transition: all 0.3s;
            box-shadow: inset 0 2px 5px rgba(0, 0, 0, 0.5);
        }
        
        .code-input:focus {
            outline: none;
            border-color: #ffd700;
            box-shadow: 
                inset 0 2px 5px rgba(0, 0, 0, 0.5),
                0 0 0 3px rgba(212, 175, 55, 0.2);
        }
        
        .code-input::placeholder {
            color: #6b5c2e;
        }
        
        .submit-btn {
            background: linear-gradient(135deg, #d4af37, #b8941f);
            color: #0a0a0a;
            border: none;
            border-radius: 10px;
            padding: 0 25px;
            font-size: 1rem;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s;
            letter-spacing: 1px;
            box-shadow: 0 5px 15px rgba(212, 175, 55, 0.3);
            flex-shrink: 0;
        }
        
        .submit-btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 20px rgba(212, 175, 55, 0.5);
            background: linear-gradient(135deg, #e0c158, #d4af37);
        }
        
        .submit-btn:active {
            transform: translateY(-1px);
        }
        
        .free-tag {
            background: linear-gradient(135deg, #d4af37, #b8941f);
            color: #0a0a0a;
            text-align: center;
            padding: 16px;
            border-radius: 12px;
            font-weight: 800;
            font-size: 1.2rem;
            letter-spacing: 1.2px;
            margin-top: 15px;
            box-shadow: 0 5px 15px rgba(212, 175, 55, 0.4);
            position: relative;
            overflow: hidden;
        }
        
        .free-tag::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
            animation: shine 3s infinite;
        }
        
        @keyframes shine {
            0% { left: -100%; }
            20% { left: 100%; }
            100% { left: 100%; }
        }
        
        /* 底部链接样式 */
        .footer-links {
            display: flex;
            justify-content: center;
            flex-wrap: wrap;
            gap: 20px;
            margin-bottom: 20px;
        }
        
        .footer-link {
            color: #d4af37;
            text-decoration: none;
            font-weight: 500;
            padding: 6px 12px;
            border-radius: 6px;
            transition: all 0.3s;
            position: relative;
            font-size: 0.95rem;
        }
        
        .footer-link:hover {
            color: #ffd700;
            background-color: rgba(212, 175, 55, 0.1);
            text-decoration: none;
        }
        
        .footer-link::after {
            content: '';
            position: absolute;
            bottom: 0;
            left: 50%;
            transform: translateX(-50%);
            width: 0;
            height: 2px;
            background: #d4af37;
            transition: width 0.3s;
        }
        
        .footer-link:hover::after {
            width: 80%;
        }
        
        /* 模态框样式 - 调整为适合700px宽度 */
        .modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.85);
            z-index: 1000;
            align-items: center;
            justify-content: center;
            padding: 20px;
        }
        
        .modal-content {
            background: linear-gradient(145deg, #1a1a1a, #0a0a0a);
            border-radius: 18px;
            width: 100%;
            max-width: 650px;
            max-height: 80vh;
            overflow-y: auto;
            padding: 30px;
            border: 1px solid rgba(212, 175, 55, 0.3);
            box-shadow: 0 20px 50px rgba(0, 0, 0, 0.8);
            position: relative;
        }
        
        .modal-content::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 3px;
            background: linear-gradient(90deg, #d4af37, #ffd700, #d4af37);
        }
        
        .modal-header {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 20px;
            padding-bottom: 15px;
            border-bottom: 1px solid rgba(212, 175, 55, 0.2);
        }
        
        .modal-title {
            font-size: 1.6rem;
            color: #d4af37;
            font-weight: 700;
        }
        
        .close-modal {
            background: none;
            border: none;
            color: #d4af37;
            font-size: 1.8rem;
            cursor: pointer;
            line-height: 1;
            padding: 0;
            width: 36px;
            height: 36px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 50%;
            transition: all 0.3s;
        }
        
        .close-modal:hover {
            background-color: rgba(212, 175, 55, 0.1);
            color: #ffd700;
            transform: rotate(90deg);
        }
        
        .modal-body {
            color: #e0d6b8;
            line-height: 1.7;
            font-size: 0.95rem;
        }
        
        .modal-body h3 {
            color: #d4af37;
            margin: 18px 0 10px;
            font-size: 1.2rem;
        }
        
        .modal-body p {
            margin-bottom: 14px;
        }
        
        .modal-body ul {
            padding-left: 20px;
            margin-bottom: 18px;
        }
        
        .modal-body li {
            margin-bottom: 8px;
            color: #b8a05c;
        }
        
        .warning-box {
            background-color: rgba(212, 175, 55, 0.1);
            border-left: 4px solid #d4af37;
            padding: 18px;
            margin: 20px 0;
            border-radius: 0 8px 8px 0;
        }
        
        .warning-title {
            color: #ffd700;
            font-weight: 700;
            margin-bottom: 10px;
            display: flex;
            align-items: center;
            gap: 8px;
            font-size: 1.1rem;
        }
        
        /* 底部版权 */
        .footer {
            text-align: center;
            margin-top: 30px;
            padding-top: 20px;
            border-top: 1px solid rgba(212, 175, 55, 0.2);
            color: #b8a05c;
            font-size: 0.9rem;
        }
        
        .copyright {
            margin-top: 10px;
            color: #8a7a4a;
        }
        
        /* 脉冲效果 */
        .pulse {
            display: inline-block;
            width: 10px;
            height: 10px;
            background-color: #d4af37;
            border-radius: 50%;
            margin-right: 10px;
            animation: pulse 2s infinite;
            box-shadow: 0 0 10px #d4af37;
        }
        
        @keyframes pulse {
            0% { 
                opacity: 0.5;
                transform: scale(0.9);
            }
            50% { 
                opacity: 1;
                transform: scale(1.1);
            }
            100% { 
                opacity: 0.5;
                transform: scale(0.9);
            }
        }
        
        /* 响应式调整 */
        @media (max-width: 768px) {
            .container {
                padding: 0 15px;
            }
            
            .main-title {
                font-size: 2rem;
            }
            
            .features, .analysis-section {
                padding: 25px;
            }
            
            .input-wrapper {
                flex-direction: column;
            }
            
            .submit-btn {
                padding: 15px;
                width: 100%;
            }
            
            .footer-links {
                gap: 15px;
            }
            
            .modal-content {
                padding: 25px;
            }
        }
        
        @media (max-width: 480px) {
            .main-title {
                font-size: 1.8rem;
            }
            
            .features, .analysis-section {
                padding: 20px;
            }
            
            .modal-content {
                padding: 20px;
            }
        }