/* --- 全局变量 --- */
        :root {
            --primary: #1a1a1a;
            --secondary: #666;
            --bg: #fcfcfc;
            --border: #e2e8f0;
            --accent-blue: #2c5282; /* 商务蓝，体现稳重、安全 */
            --accent-blue-light: #ebf8ff;
        }

        body {
            margin: 0;
            font-family: "Helvetica Neue", Helvetica, "PingFang SC", "Microsoft YaHei", sans-serif;
            background-color: var(--bg);
            color: var(--primary);
            line-height: 1.6;
            background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)' opacity='0.04'/%3E%3C/svg%3E");
        }

        .container { max-width: 1200px; margin: 0 auto; padding: 0 20px; }

        /* --- 头部 --- */
        .manage-header { text-align: center; padding: 80px 0 60px; }
        .manage-title { font-size: 42px; font-weight: 300; margin-bottom: 20px; }
        .manage-desc { color: var(--secondary); max-width: 700px; margin: 0 auto; font-size: 16px; }

        /* --- 核心定价卡片区 --- */
        .pricing-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 30px;
            margin-bottom: 80px;
            align-items: flex-start;
        }

        .pricing-card {
            background: #fff;
            border: 1px solid var(--border);
            border-radius: 8px;
            overflow: hidden;
            transition: all 0.3s;
            position: relative;
        }

        .pricing-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(0,0,0,0.08);
            border-color: var(--accent-blue);
        }

        /* 推荐款样式 (新媒体) */
        .pricing-card.popular {
            border-top: 4px solid var(--accent-blue);
            transform: scale(1.02);
            box-shadow: 0 10px 30px rgba(0,0,0,0.05);
            z-index: 2;
        }
        .pricing-card.popular:hover { transform: scale(1.02) translateY(-10px); }

        .card-header { padding: 40px 30px 20px; text-align: center; border-bottom: 1px solid #f0f0f0; }
        .card-icon { font-size: 40px; margin-bottom: 15px; display: block; }
        .card-title { font-size: 20px; font-weight: 600; margin-bottom: 10px; }
        .card-price { font-size: 36px; color: var(--primary); font-weight: 700; font-family: 'Helvetica Neue', sans-serif; }
        .card-price span { font-size: 14px; color: #999; font-weight: normal; }

        .card-body { padding: 30px; }
        
        /* 服务列表 */
        .service-list { list-style: none; padding: 0; margin: 0; }
        .service-list li {
            margin-bottom: 15px;
            font-size: 14px;
            color: #555;
            display: flex;
            align-items: flex-start;
        }
        .service-list li::before {
            content: '✓';
            color: var(--accent-blue);
            font-weight: bold;
            margin-right: 10px;
            min-width: 15px;
        }
        
        /* 列表中的强调数据 */
        .highlight-data { color: var(--accent-blue); font-weight: 600; }

        .btn-subscribe {
            display: block;
            width: 100%;
            padding: 15px 0;
            text-align: center;
            background: #fff;
            color: var(--primary);
            border: 1px solid var(--primary);
            border-radius: 4px;
            text-decoration: none;
            font-weight: 600;
            margin-top: 20px;
            transition: 0.3s;
        }
        .pricing-card.popular .btn-subscribe {
            background: var(--primary);
            color: #fff;
        }
        .btn-subscribe:hover { opacity: 0.8; }

        /* --- 成本对比区 (ROI) --- */
        .roi-section {
            background: #1a1a1a;
            color: #fff;
            padding: 80px 0;
            border-radius: 8px;
            margin-bottom: 80px;
        }

        .roi-container {
            display: flex;
            justify-content: space-around;
            align-items: center;
            max-width: 1000px;
            margin: 0 auto;
        }

        .roi-box { text-align: center; width: 40%; }
        .roi-title { font-size: 20px; color: #999; margin-bottom: 20px; text-transform: uppercase; letter-spacing: 1px; }
        .roi-cost { font-size: 48px; font-weight: 700; margin-bottom: 10px; }
        .roi-detail { font-size: 14px; color: #666; line-height: 1.6; }
        
        .vs-badge {
            font-size: 24px;
            font-weight: 900;
            font-style: italic;
            color: #333;
            background: #fff;
            width: 60px; height: 60px;
            border-radius: 50%;
            display: flex; justify-content: center; align-items: center;
        }

        /* 响应式 */
        @media (max-width: 900px) {
            .pricing-grid { grid-template-columns: 1fr; max-width: 500px; margin: 0 auto 60px; }
            .pricing-card.popular { transform: none; border-top: 1px solid var(--border); border-left: 4px solid var(--accent-blue); }
            .roi-container { flex-direction: column; gap: 40px; }
            .roi-box { width: 100%; }
        }
        
        
        /************弹窗************/
        
.modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background: rgba(0, 0, 0, 0.7);
            z-index: 1000;
            justify-content: center;
            align-items: center;
        }

        .modal-content {
            background: white;
            padding: 30px;
            border-radius: 12px;
            text-align: center;
            max-width: 350px;
            width: 90%;
            box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
            position: relative;
            animation: modalAppear 0.3s ease-out;
        }

        @keyframes modalAppear {
            from {
                opacity: 0;
                transform: scale(0.8);
            }
            to {
                opacity: 1;
                transform: scale(1);
            }
        }

        .close-btn {
            position: absolute;
            top: 15px;
            right: 15px;
            font-size: 24px;
            cursor: pointer;
            color: #999;
            transition: color 0.3s;
        }

        .close-btn:hover {
            color: #333;
        }

        .qrcode {
            width: 200px;
            height: 200px;
            margin: 0 auto 20px;
            background: white;
            border: 1px solid #ddd;
            border-radius: 8px;
            display: flex;
            justify-content: center;
            align-items: center;
            overflow: hidden;
            box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
        }

        .qrcode img {
            width: 100%;
            height: 100%;
            object-fit: contain;
        }

        .qrcode-text {
            margin-top: 15px;
            color: #666;
            font-size: 14px;
        }