:root {
            --primary-gradient: linear-gradient(100deg, #4bb7ed 0%, #274a85 100%);
            --secondary-gradient: linear-gradient(135deg, #43cea2 0%, #185a9d 100%);
            --accent-color: #07C160;
            --text-dark: #2d3748;
            --text-light: #4a5568;
            --bg-light: #f5f7fa;
            --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.08);
            --hover-shadow: 0 15px 35px rgba(0, 0, 0, 0.12);
            --transition: all 0.3s ease;
        }
        
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
        }
        
        body {
            background: var(--bg-light);
            color: var(--text-dark);
            text-align: center;
            /*padding: 30px 20px;*/
            min-height: 100vh;
            display: flex;
            justify-content: center;
            /*align-items: center;*/
            background-image: radial-gradient(circle at top right, rgba(106, 17, 203, 0.03) 0%, transparent 50%),
                              radial-gradient(circle at bottom left, rgba(37, 117, 252, 0.03) 0%, transparent 50%);
        }
        
        .container_dw {
            max-width: 900px;
           
            background: white;
            border-radius: 20px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            padding: 40px;
            position: relative;
            z-index: 1;
            width: 100%;
        }
        
        .container_dw::before {
            content: '';
            position: absolute;
            top: -50px;
            right: -50px;
            width: 200px;
            height: 200px;
            background: var(--primary-gradient);
            border-radius: 50%;
            opacity: 0.05;
            z-index: -1;
        }
        
        .container_dw::after {
            content: '';
            position: absolute;
            bottom: -30px;
            left: -30px;
            width: 150px;
            height: 150px;
            background: var(--secondary-gradient);
            border-radius: 50%;
            opacity: 0.05;
            z-index: -1;
        }
        
        h3 {
            /*font-size: 32px;*/
            margin-bottom: 30px;
            font-weight: 700;
            background: var(--primary-gradient);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            position: relative;
            display: inline-block;
        }
        
        h3::after {
            content: '';
            position: absolute;
            bottom: -10px;
            left: 50%;
            transform: translateX(-50%);
            width: 30%;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }
        
            /* 修改步骤容器布局 */
        .steps-container_dw {
            display: flex;
            justify-content: space-between;
            margin: 17px 0;
            position: relative;
            flex-wrap: wrap; /* 添加换行支持 */
        }
        
        .steps-container_dw::before {
            content: '';
            position: absolute;
            top: 24px;
            left: 50px;
            right: 50px;
            height: 4px;
            background: linear-gradient(to right, #1e88e5,#ff5722, #ffab00);
            border-radius: 2px;
            z-index: 1;
        }
        
        .step {
            text-align: center;
            position: relative;
            z-index: 2;
            width: 24%;
            display: flex; 
            flex-direction: column;
            align-items: center;
        }
        
        .step-number {
            width: 48px;
            height: 48px;
            border-radius: 50%;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            justify-content: center;
            font-size: 20px;
            font-weight: 700;
            margin: 0 auto 15px;
            box-shadow: 0 5px 15px rgba(106, 17, 203, 0.3);
            transition: var(--transition);
            flex-shrink: 0; 
        }

        
        .step:hover .step-number {
            transform: translateY(-5px) scale(1.05);
            box-shadow: 0 8px 20px rgba(106, 17, 203, 0.4);
        }
        
        .step-content {
            font-size: 16px;
            line-height: 1.5;
            color: var(--text-light);
            transition: var(--transition);
        }
        
        .step:hover .step-content {
            color: var(--text-dark);
            font-weight: 500;
        }
        
        .qrcode-container_dw {
            margin: 0px auto;
             padding: 10px; 
            background: white;
            border-radius: 12px;
            display: inline-block;
            position: relative;
            box-shadow: 0 10px 20px rgba(0, 0, 0, 0.05);
            border: 2px solid rgba(106, 17, 203, 0.1);
            transition: var(--transition);
        }
        
        .qrcode-container_dw:hover {
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
            transform: translateY(-5px);
        }
        
        .qrcode-container_dw::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            height: 5px;
            background: var(--primary-gradient);
            border-radius: 5px 5px 0 0;
        }
        
        .qrcode-container_dw p {
            margin-bottom: 15px;
            font-weight: 600;
            color: var(--text-dark);
            font-size: 18px;
        }
        
        .qrcode {
            width: 220px;
            height: 220px;
            background-color: white;
            padding: 10px;
            border: 1px solid #f0f0f0;
            border-radius: 10px;
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
            background: linear-gradient(135deg, #ffffff 0%, #f8f9ff 100%);
            display: flex;
            align-items: center;
            justify-content: center;
        }
        
        .qrcode img {
            max-width: 100%;
            max-height: 100%;
            display: block;
        }
        
        .code-input-container_dw {
            margin: 30px 0;
            display: flex;
            justify-content: center;
            align-items: center;
            flex-wrap: wrap;
            gap: 15px;
        }
        
        input {
            padding: 14px 25px;
            font-size: 18px;
            border: none;
            border-radius: 50px;
            width: 280px;
            text-align: center;
            letter-spacing: 5px;
            background: rgba(245, 247, 250, 0.8);
            box-shadow: inset 0 2px 10px rgba(0, 0, 0, 0.05);
            transition: var(--transition);
        }
        
        input:focus {
            outline: none;
            box-shadow: inset 0 2px 10px rgba(106, 17, 203, 0.1),
                        0 0 0 2px rgba(106, 17, 203, 0.3);
        }
        
        input::placeholder {
            letter-spacing: normal;
        }
        
        button {
            background: var(--primary-gradient);
            color: white;
            border: none;
            padding: 14px 35px;
            font-size: 18px;
            font-weight: 600;
            border-radius: 50px;
            cursor: pointer;
            box-shadow: 0 5px 15px rgba(106, 17, 203, 0.3);
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
        }
        
        button:hover {
            background: linear-gradient(135deg, #83d3f8 0%, #0a49b3 100%);
            box-shadow: 0 8px 20px rgba(106, 17, 203, 0.4);
            transform: translateY(-3px);
        }
        
        button:active {
            transform: translateY(1px);
        }
        
        button svg {
            width: 20px;
            height: 20px;
        }
        
        .download-info-modern {
            width: 100%;
            margin: 40px auto 0;
            background: white;
            border-radius: 16px;
            box-shadow: var(--card-shadow);
            overflow: hidden;
            transition: var(--transition);
            text-align: left;
            max-width: 700px;
        }
        
        .download-info-modern:hover {
            transform: translateY(-5px);
            box-shadow: var(--hover-shadow);
        }
        
        .card-header {
            padding: 20px 30px;
            background: var(--primary-gradient);
            color: white;
            display: flex;
            align-items: center;
            gap: 15px;
        }
        
        .card-header svg {
            width: 32px;
            height: 32px;
            stroke-width: 1.5;
        }
        
        .card-header h2 {
            margin: 0;
            font-weight: 600;
            font-size: 24px;
        }
        
        .card-content {
            padding: 30px;
        }
        
        .disk-info {
            display: flex;
            align-items: center;
            padding: 20px;
            background: linear-gradient(135deg, rgba(245, 247, 250, 0.5) 0%, rgba(255, 255, 255, 0.8) 100%);
            border-radius: 12px;
            margin-bottom: 20px;
            border: 1px solid rgba(106, 17, 203, 0.05);
            transition: var(--transition);
        }
        
        .disk-info:hover {
            background: linear-gradient(135deg, rgba(245, 247, 250, 0.7) 0%, rgba(255, 255, 255, 0.9) 100%);
            transform: translateX(5px);
            box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
        }
        
        .disk-logo {
            width: 60px;
            height: 60px;
            background: var(--primary-gradient);
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 20px;
            box-shadow: 0 5px 15px rgba(106, 17, 203, 0.2);
        }
        
        .disk-logo svg {
            width: 32px;
            height: 32px;
            color: white;
        }
        
        .disk-details {
            flex: 1;
        }
        
        .disk-name {
            font-weight: 700;
            font-size: 20px;
            color: var(--text-dark);
            margin-bottom: 8px;
            display: flex;
            align-items: center;
            gap: 10px;
        }
        
        .disk-name::after {
            content: '';
            flex: 1;
            height: 1px;
            background: linear-gradient(to right, rgba(106, 17, 203, 0.3), transparent);
        }
        
        .download-info div {
            margin-bottom: 8px;
            font-size: 16px;
            color: var(--text-light);
            display: flex;
        }
        
        .download-info div span {
            font-weight: 500;
            color: var(--text-dark);
            margin-left: 10px;
            word-break: break-all;
        }
        
        .copy-btn {
            background: var(--secondary-gradient);
            color: white;
            border: none;
            border-radius: 8px;
            padding: 10px 20px;
            font-size: 16px;
            cursor: pointer;
            transition: var(--transition);
            display: inline-flex;
            align-items: center;
            gap: 8px;
            margin-top: 20px;
            box-shadow: 0 5px 15px rgba(67, 206, 162, 0.3);
        }
        
        .copy-btn:hover {
            background: linear-gradient(135deg, #3bbd98 0%, #154e89 100%);
            box-shadow: 0 8px 20px rgba(67, 206, 162, 0.4);
            transform: translateY(-2px);
        }
        
        .copy-btn:active {
            transform: translateY(1px);
        }
        
        .copy-btn svg {
            width: 16px;
            height: 16px;
        }
        
        /* 响应式设计 */
        @media (max-width: 768px) {
            .container_dw {
                padding: 30px 20px;
            }
            
            .steps-container_dw {
                flex-wrap: wrap;
                gap: 8px;
            }
            
            .steps-container_dw::before {
                display: none;
            }
            
             .step {
        width: 100%; /* 全宽显示 */
        flex-direction: row; /* 水平排列 */
        text-align: left; /* 左对齐 */
        margin-bottom: 25px;
        align-items: center; /* 垂直居中 */
    }
    
    .step-number {
        margin: 0 15px 0 0; /* 右侧留空 */
    }
    
    .step-content {
        flex: 1; /* 填充剩余空间 */
    }
            input {
                width: 100%;
            }
            
            button {
                
                justify-content: center;
            }
        }
        
        @media (max-width: 480px) {
            .step {
        width: 100%;
        flex-direction: row;
        text-align: left;
        margin-bottom: 20px;
        align-items: center;
    }
    
    .step-number {
        width: 36px;
        height: 36px;
        font-size: 16px;
        margin: 0 12px 0 0;
    }
    
    .step-content {
        font-size: 14px;
        flex: 1;
    }
            
            .qrcode-container_dw {
                padding: 20px;
            }
            
            .qrcode {
                width: 180px;
                height: 180px;
            }
        }