* {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
            font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Helvetica Neue', sans-serif;
        }
        
        body {
            background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
            min-height: 100vh;
            display: flex;
            justify-content: center;
            align-items: center;
            padding: 20px;
            color: #333;
            line-height: 1.6;
        }
        
        .ios-container {
            width: 100%;
            max-width: 800px;
            margin: 0 auto;
        }
        
        .ios-header {
            text-align: center;
            margin-bottom: 30px;
            padding: 0 15px;
        }
        
        .ios-header h1 {
            font-size: 32px;
            font-weight: 700;
            letter-spacing: -0.5px;
            margin-bottom: 12px;
            background: linear-gradient(90deg, #0071e3, #2997ff);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        .ios-header p {
            font-size: 17px;
            color: #666;
            max-width: 600px;
            margin: 0 auto;
        }
        
        .ios-card {
            background: rgba(255, 255, 255, 0.95);
            backdrop-filter: blur(10px);
            border-radius: 20px;
            box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
            overflow: hidden;
            margin-bottom: 25px;
            border: 1px solid rgba(255, 255, 255, 0.7);
        }
        
        .card-section {
            padding: 20px;
            border-bottom: 1px solid rgba(0, 0, 0, 0.05);
        }
        
        .card-section:last-child {
            border-bottom: none;
        }
        
        .section-header {
            display: flex;
            align-items: center;
            margin-bottom: 18px;
        }
        
        .section-icon {
            width: 36px;
            height: 36px;
            border-radius: 9px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 12px;
            background: linear-gradient(135deg, #0071e3, #34aadc);
        }
        
        .section-icon i {
            color: white;
            font-size: 18px;
        }
        
        .section-title {
            font-size: 20px;
            font-weight: 600;
        }
        
        .info-item {
            display: flex;
            flex-direction: column;
            padding: 12px 0;
            border-bottom: 1px solid rgba(0, 0, 0, 0.03);
        }
        
        .info-item:last-child {
            border-bottom: none;
        }
        
        .info-label {
            font-weight: 500;
            color: #666;
            font-size: 15px;
            margin-bottom: 5px;
        }
        
        .info-content {
            font-size: 16px;
            font-weight: 500;
        }
        
        .key-container {
            background: #f8f9fa;
            border-radius: 14px;
            padding: 18px;
            margin: 12px 0;
            border: 1px solid rgba(0, 0, 0, 0.05);
        }
        
        .key-title {
            font-size: 15px;
            color: #666;
            margin-bottom: 10px;
        }
        
        .key-value {
            font-family: 'SF Mono', monospace;
            font-size: 20px;
            font-weight: 600;
            letter-spacing: 0.5px;
            background: linear-gradient(90deg, #0071e3, #34aadc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            padding: 12px 15px;
            border-radius: 12px;
            background-color: rgba(0, 113, 227, 0.05);
            border: 1px solid rgba(0, 113, 227, 0.15);
            text-align: center;
            word-break: break-all;
            line-height: 1.4;
        }
        
        .footer {
            text-align: center;
            padding: 25px 15px;
            color: #888;
            font-size: 14px;
            line-height: 1.5;
        }
        
        .btn-ios {
            display: block;
            width: 100%;
            background: linear-gradient(90deg, #0071e3, #2997ff);
            color: white;
            padding: 16px;
            border-radius: 14px;
            font-weight: 600;
            font-size: 17px;
            text-decoration: none;
            margin: 15px 0 5px;
            box-shadow: 0 4px 15px rgba(0, 113, 227, 0.25);
            transition: all 0.3s ease;
            border: none;
            cursor: pointer;
        }
        
        .btn-ios:hover {
            transform: translateY(-2px);
            box-shadow: 0 6px 20px rgba(0, 113, 227, 0.35);
        }
        
        .btn-copy-text {
            display: flex;
            justify-content: center;
            align-items: center;
            gap: 8px;
        }
        
        .brand-logo {
            text-align: center;
            margin-bottom: 15px;
        }
        
        .brand-logo span {
            font-size: 24px;
            font-weight: 700;
            background: linear-gradient(90deg, #0071e3, #34aadc);
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
        }
        
        @media (min-width: 768px) {
            .ios-header h1 {
                font-size: 36px;
            }
            
            .ios-header p {
                font-size: 18px;
            }
            
            .card-section {
                padding: 25px 30px;
            }
            
            .section-icon {
                width: 40px;
                height: 40px;
            }
            
            .section-icon i {
                font-size: 20px;
            }
            
            .section-title {
                font-size: 22px;
            }
            
            .info-item {
                flex-direction: row;
                align-items: center;
            }
            
            .info-label {
                width: 100px;
                margin-bottom: 0;
            }
            
            .info-content {
                flex: 1;
            }
            
            .btn-ios {
                width: auto;
                display: inline-block;
                padding: 14px 35px;
                margin: 20px 0 10px;
            }
            
            .key-value {
                font-size: 22px;
            }
        }
        
        @media (max-width: 480px) {
            body {
                padding: 15px;
            }
            
            .ios-header {
                margin-bottom: 25px;
            }
            
            .ios-header h1 {
                font-size: 28px;
            }
            
            .ios-header p {
                font-size: 16px;
            }
            
            .section-title {
                font-size: 18px;
            }
            
            .key-value {
                font-size: 18px;
                padding: 10px;
            }
            
            .btn-ios {
                font-size: 16px;
            }
        }
        
        /* 卡片悬停效果 */
        .ios-card {
            transition: transform 0.3s ease, box-shadow 0.3s ease;
        }
        
        @media (hover: hover) {
            .ios-card:hover {
                transform: translateY(-5px);
                box-shadow: 0 20px 50px rgba(0, 0, 0, 0.12);
            }
        }