/* 全局变量 */
        :root {
            --primary-color: #00FFFF;
            --secondary-color: #6C757D;
            --background-color: #0A0F1B;
            --text-color: #F0F8FF;
            --glass-bg: rgba(255, 255, 255, 0.05);
            --glow-color: rgba(0, 255, 255, 0.3);
            --shadow-color: rgba(0, 0, 0, 0.3);
        }

        /* 全局样式 */
        body {
            font-family: 'Roboto', sans-serif;
            min-height: 100vh;
            background: var(--background-color);
            display: flex;
            justify-content: center;
            align-items: center;
            margin: 0;
            padding: 0;
            color: var(--text-color);
            position: relative;
            overflow: hidden;
        }

        /* 背景动态光影效果 */
        body::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: radial-gradient(circle at 50% 50%, rgba(0, 255, 255, 0.1) 0%, transparent 60%);
            animation: background-shift 30s linear infinite;
            z-index: -1;
        }

        @keyframes background-shift {
            0% {
                transform: translate(-20%, -20%) rotate(0deg);
            }
            100% {
                transform: translate(20%, 20%) rotate(360deg);
            }
        }

        /* 容器样式 - 玻璃拟态 */
       .container {
            background: var(--glass-bg);
            border-radius: 20px;
            padding: 32px;
            box-shadow: 0 8px 32px 0 var(--shadow-color), 0 0 40px 0 var(--glow-color);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            max-width: 500px;
            width: 90%;
            text-align: center;
            animation: fade-in 0.6s ease-out;
        }

        @keyframes fade-in {
            from {
                opacity: 0;
                transform: translateY(-20px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }

        /* 标题样式 */
        h1 {
            font-family: 'Orbitron', sans-serif;
            font-size: 36px;
            margin-bottom: 16px;
            color: var(--primary-color);
            text-shadow: 0 0 10px var(--primary-color);
        }

        /* 协议提示样式 */
       .protocol {
            font-size: 16px;
            margin-bottom: 32px;
            line-height: 1.6;
            color: var(--text-color);
        }

        /* 步骤列表样式 */
       .steps {
            list-style-type: none;
            padding: 0;
            margin-bottom: 32px;
        }

       .step {
            display: flex;
            align-items: center;
            margin-bottom: 16px;
            background: var(--glass-bg);
            border-radius: 12px;
            padding: 16px;
            transition: all 0.3s ease;
            box-shadow: 0 4px 16px 0 var(--shadow-color);
            position: relative;
        }

       .step::before {
            content: '';
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(0, 255, 255, 0.1), transparent);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

       .step:hover {
            background: rgba(255, 255, 255, 0.1);
            transform: translateY(-5px);
        }

       .step:hover::before {
            opacity: 1;
        }

       .step-number {
            font-size: 24px;
            font-weight: 700;
            color: var(--primary-color);
            margin-right: 16px;
            text-shadow: 0 0 5px var(--primary-color);
        }

       .step-description {
            text-align: left;
            font-size: 16px;
            color: var(--text-color);
        }

        /* 按钮样式 */
       .actions {
            display: flex;
            flex-direction: column;
            gap: 16px;
        }

       .btn {
            padding: 16px 32px;
            border: none;
            border-radius: 12px;
            font-size: 16px;
            font-weight: 700;
            cursor: pointer;
            transition: all 0.3s ease;
            outline: none;
            position: relative;
            overflow: hidden;
        }

       .btn::before {
            content: '';
            position: absolute;
            top: -50%;
            left: -50%;
            width: 200%;
            height: 200%;
            background: rgba(255, 255, 255, 0.1);
            transform: rotate(45deg);
            opacity: 0;
            transition: opacity 0.3s ease;
        }

       .btn:hover::before {
            opacity: 1;
        }

       .btn-primary {
            background: var(--primary-color);
            color: var(--background-color);
            box-shadow: 0 0 20px 0 var(--primary-color);
        }

       .btn-primary:hover {
            background: #00E5E5;
            transform: translateY(-5px);
            box-shadow: 0 0 30px 0 var(--primary-color);
        }

       .btn-secondary {
            background: transparent;
            border: 2px solid var(--primary-color);
            color: var(--primary-color);
            box-shadow: 0 0 10px 0 var(--primary-color);
        }

       .btn-secondary:hover {
            background: rgba(0, 255, 255, 0.1);
            transform: translateY(-5px);
            box-shadow: 0 0 20px 0 var(--primary-color);
        }

        /* 自定义提示弹窗样式 */
       .custom-alert {
            position: fixed;
            top: 20px;
            left: 50%;
            transform: translateX(-50%);
            background: rgba(0, 0, 0, 0.8);
            color: var(--text-color);
            padding: 16px 32px;
            border-radius: 12px;
            box-shadow: 0 0 20px 0 var(--shadow-color);
            backdrop-filter: blur(10px);
            -webkit-backdrop-filter: blur(10px);
            border: 1px solid rgba(255, 255, 255, 0.1);
            z-index: 1000;
            animation: slide-down 0.3s ease-out;
        }

        @keyframes slide-down {
            from {
                opacity: 0;
                transform: translate(-50%, -20px);
            }
            to {
                opacity: 1;
                transform: translate(-50%, 0);
            }
        }