:root {
            --primary-gradient: linear-gradient(135deg, #3b82f6, #8b5cf6);
            --accent-blue: #60a5fa;
            --accent-purple: #a78bfa;
            --accent-green: #34d399;
            --accent-yellow: #fbbf24;
            --neutral-light: #f8fafc;
            --neutral-dark: #1e293b;
            --card-bg: #ffffff;
        }
        
        * {
            box-sizing: border-box;
            margin: 0;
            padding: 0;
        }
        
        body {
            font-family: 'Segoe UI', system-ui, 'Microsoft YaHei', sans-serif;
            background-color: var(--neutral-light);
            color: var(--neutral-dark);
            line-height: 1.6;
        }
        
        .container {
            max-width: 1100px;
            margin: 0 auto;
        }
        
        h1 {
            font-size: 2.8rem;
            margin-bottom: 1.5rem;
            font-weight: 800;
            text-shadow: 0 2px 10px rgba(0,0,0,0.1);
        }
        
        .subtitle {
            font-size: 1.2rem;
            max-width: 800px;
            margin: 0 auto 1.5rem;
            opacity: 0.92;
        }
        
        .meta-info {
            display: flex;
            justify-content: center;
            gap: 1.8rem;
            font-size: 0.95rem;
            margin-top: 1.5rem;
            opacity: 0.85;
        }
        
        .card {
            background: var(--card-bg);
            border-radius: 16px;
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            padding: 2.5rem;
            margin-bottom: 2.5rem;
            transition: all 0.3s ease;
            border: 1px solid rgba(139, 92, 246, 0.1);
        }
        
        .card:hover {
            transform: translateY(-8px);
            box-shadow: 0 15px 40px rgba(139, 92, 246, 0.15);
        }
        
        .card-header {
            display: flex;
            align-items: center;
            margin-bottom: 1.8rem;
            position: relative;
        }
        
        .card-header::after {
            content: "";
            position: absolute;
            bottom: -10px;
            left: 0;
            width: 100px;
            height: 4px;
            background: var(--primary-gradient);
            border-radius: 2px;
        }
        
        .icon-badge {
            width: 50px;
            height: 50px;
            border-radius: 12px;
            display: flex;
            align-items: center;
            justify-content: center;
            margin-right: 1.2rem;
            background: rgba(139, 92, 246, 0.1);
            color: var(--accent-purple);
            font-size: 1.5rem;
        }
        
        .card-title {
            font-size: 1.8rem;
            font-weight: 700;
            margin: 0;
            color: var(--neutral-dark);
        }
        
        .requirements-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
            gap: 1.5rem;
            margin: 2rem 0;
        }
        
        .requirement-card {
            background: rgba(248, 250, 252, 0.8);
            border-radius: 12px;
            padding: 1.5rem;
            border-left: 4px solid var(--accent-purple);
            position: relative;
        }
        
        .requirement-card::before {
            content: "";
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 4px;
            background: var(--accent-purple);
        }
        
        .step-list {
            counter-reset: step-counter;
            margin: 2rem 0;
        }
        
        .step-item {
            counter-increment: step-counter;
            padding: 1.5rem 1.8rem 1.5rem 4.5rem;
            margin-bottom: 1.5rem;
            background: white;
            border-radius: 12px;
            box-shadow: 0 5px 15px rgba(0,0,0,0.05);
            position: relative;
            border-left: 4px solid var(--accent-purple);
            transition: all 0.3s ease;
        }
        
        .step-item:hover {
            transform: translateX(10px);
        }
        
        .step-item::before {
            content: counter(step-counter);
            position: absolute;
            left: 1.5rem;
            top: 50%;
            transform: translateY(-50%);
            width: 36px;
            height: 36px;
            background: var(--primary-gradient);
            color: white;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            font-weight: bold;
            font-size: 1.1rem;
        }
        
        .tip-box {
            background: rgba(59, 130, 246, 0.08);
            border-left: 4px solid var(--accent-blue);
            padding: 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 2rem 0;
            position: relative;
        }
        
        .tip-box::before {
            content: "💡";
            position: absolute;
            left: -30px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
        }
        
        .warning-box {
            background: rgba(251, 191, 36, 0.08);
            border-left: 4px solid var(--accent-yellow);
            padding: 1.5rem;
            border-radius: 0 12px 12px 0;
            margin: 2rem 0;
            position: relative;
        }
        
        .warning-box::before {
            content: "⚠️";
            position: absolute;
            left: -30px;
            top: 50%;
            transform: translateY(-50%);
            font-size: 1.5rem;
        }
        
        .btn {
            display: inline-flex;
            align-items: center;
            gap: 0.8rem;
            background: var(--primary-gradient);
            color: white;
            padding: 0.9rem 2rem;
            border-radius: 12px;
            text-decoration: none;
            font-weight: 600;
            transition: all 0.3s ease;
            box-shadow: 0 5px 20px rgba(99, 102, 241, 0.3);
            margin-top: 1rem;
        }
        
        .btn:hover {
            transform: translateY(-3px);
            box-shadow: 0 8px 25px rgba(99, 102, 241, 0.4);
        }
        
        .tag {
            display: inline-flex;
            align-items: center;
            gap: 0.4rem;
            padding: 0.5rem 1.2rem;
            border-radius: 20px;
            font-size: 0.85rem;
            font-weight: 600;
            margin-right: 0.8rem;
            margin-bottom: 0.8rem;
        }
        
        .tag-blue {
            background: rgba(59, 130, 246, 0.15);
            color: #1d4ed8;
        }
        
        .tag-purple {
            background: rgba(139, 92, 246, 0.15);
            color: #7e22ce;
        }
        
        .tag-green {
            background: rgba(52, 211, 153, 0.15);
            color: #047857;
        }
        
        .code-block {
            background: #1e293b;
            color: #f1f5f9;
            padding: 1.5rem;
            border-radius: 12px;
            font-family: 'Fira Code', monospace;
            font-size: 0.95rem;
            margin: 1.5rem 0;
            overflow-x: auto;
            position: relative;
        }
        
        .code-block::before {
            content: "终端命令";
            position: absolute;
            top: 0;
            right: 0;
            background: #64748b;
            color: white;
            padding: 0.3rem 1rem;
            border-radius: 0 0 0 12px;
            font-size: 0.85rem;
        }
        
        .screenshot {
            border-radius: 12px;
            overflow: hidden;
            box-shadow: 0 15px 40px rgba(0,0,0,0.12);
            margin: 2rem 0;
            background: linear-gradient(45deg, #f0f9ff, #f5f3ff);
            padding: 2rem;
            text-align: center;
            position: relative;
        }
        
        .screenshot::before {
            content: "界面预览";
            position: absolute;
            top: 10px;
            left: 15px;
            font-size: 0.85rem;
            color: #64748b;
            font-weight: 500;
        }
        
        .screenshot-content {
            background: #e2e8f0;
            height: 300px;
            display: flex;
            align-items: center;
            justify-content: center;
            border-radius: 8px;
            color: #64748b;
            font-weight: 500;
        }
        
        .value-grid {
            display: grid;
            grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
            gap: 1.8rem;
            margin: 2rem 0;
        }
        
        .value-card {
            background: white;
            border-radius: 12px;
            padding: 2rem;
            text-align: center;
            box-shadow: 0 5px 20px rgba(0,0,0,0.06);
            transition: all 0.3s ease;
        }
        
        .value-card:hover {
            transform: translateY(-8px);
            box-shadow: 0 12px 30px rgba(139, 92, 246, 0.15);
        }
        
        .value-icon {
            width: 70px;
            height: 70px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            margin: 0 auto 1.5rem;
            font-size: 1.8rem;
            background: rgba(139, 92, 246, 0.1);
            color: var(--accent-purple);
        }
        
        footer {
            text-align: center;
            padding: 3rem 0;
            color: #64748b;
            font-size: 0.95rem;
            border-top: 1px solid #e2e8f0;
            margin-top: 2rem;
        }
        
        @media (max-width: 768px) {
            .container {
                padding: 1.5rem;
            }
            
            .card {
                padding: 1.8rem;
            }
            
            h1 {
                font-size: 2.2rem;
            }
            
            .card-title {
                font-size: 1.6rem;
            }
            
            .step-item {
                padding: 1.5rem 1.5rem 1.5rem 3.5rem;
            }
            
            .step-item::before {
                left: 1rem;
            }
        }