.ip-feature {
            padding: 70px 0;
            background: #f8fafc;
        }
        .feature-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            margin-top: 30px;
        }
        .feature-item {
            background: #fff;
            padding: 30px;
            border-radius: 10px;
            border: 1px solid #f0f0f0;
            transition: 0.3s;
            text-align: center;
        }
        .feature-item:hover {
            transform: translateY(-5px);
            box-shadow: 0 10px 25px rgba(22,93,255,0.08);
        }
        .feature-item img {
            width: 50px;
            height: 50px;
            margin-bottom: 18px;
        }
        .feature-item h3 {
            font-size: 18px;
            margin-bottom: 10px;
            color: #222;
        }
        .feature-item p {
            font-size: 14px;
            color: #666;
            line-height: 1.7;
        }

        /* 防护原理 */
        .ip-principle {
            padding: 70px 0;
            background: #fff;
        }
        .principle-wrap {
            display: flex;
            align-items: center;
            gap: 40px;
            max-width: 1100px;
            margin: 0 auto;
        }
        .principle-img {
            flex: 1;
        }
        .principle-img img {
            width: 100%;
            height:auto;
            border-radius: 10px;
        }
        .principle-text {
            flex: 1;
        }
        .principle-text h3 {
            font-size: 24px;
            margin-bottom: 20px;
            color: #222;
        }
        .principle-text p {
            font-size: 15px;
            color: #666;
            margin-bottom: 15px;
            line-height: 1.8;
        }
        .principle-list {
            margin-top: 20px;
        }
        .principle-list li {
            display: flex;
            align-items: flex-start;
            gap: 10px;
            margin-bottom: 12px;
            font-size: 14px;
            color: #555;
        }
        .principle-list li img {
            width: 16px;
            height: 16px;
            margin-top: 5px;
        }

        /* 套餐价格 */
        .ip-pricing {
            padding: 70px 0;
            background: #f8fafc;
        }
        .price-grid {
            display: grid;
            grid-template-columns: repeat(3, 1fr);
            gap: 25px;
            max-width: 1100px;
            margin: 0 auto;
        }
        .price-card {
            background: #fff;
            border: 1px solid #eee;
            border-radius: 12px;
            padding: 35px 25px;
            text-align: center;
            transition: 0.3s;
        }
        .price-card:hover {
            transform: translateY(-6px);
            box-shadow: 0 12px 30px rgba(0,0,0,0.06);
        }
        .price-card.hot {
            border-color: #165DFF;
            position: relative;
        }
        .hot-label {
            position: absolute;
            top: -10px;
            left: 50%;
            transform: translateX(-50%);
            background: #165DFF;
            color: #fff;
            padding: 3px 12px;
            border-radius: 20px;
            font-size: 12px;
        }
        .price-card h3 {
            font-size: 18px;
            margin-bottom: 15px;
            color: #222;
        }
        .price-num {
            font-size: 30px;
            color: #165DFF;
            font-weight: bold;
            margin-bottom: 20px;
        }
        .price-num span {
            font-size: 14px;
            color: #666;
            font-weight: normal;
        }
        .feat-list {
            margin-bottom: 25px;
            text-align: left;
        }
        .feat-list li {
            padding: 8px 0;
            font-size: 14px;
            color: #555;
            display: flex;
            align-items: center;
            gap: 8px;
        }
        .feat-list li img {
            width: 14px;
            height: 14px;
        }
        .buy {
            display: inline-block;
            padding: 11px 24px;
            background: #165DFF;
            color: #fff;
            border-radius: 6px;
            font-size: 14px;
            transition: 0.3s;
            width: 100%;
        }
        .buy:hover {
            background: #0E3BA1;
        }

        /* 适用场景 */
        .ip-scene {
            padding: 70px 0;
            background: #fff;
        }
        .scene-grid {
            display: grid;
            grid-template-columns: repeat(4, 1fr);
            gap: 20px;
            text-align: center;
        }
        .scene-item {
            padding: 25px 15px;
            background: #f9f9f9;
            border-radius: 8px;
            font-size: 14px;
            transition: 0.3s;
        }
        .scene-item:hover {
            background: #f0f5ff;
            border-color: #165DFF;
        }
        .scene-item img {
            width: 36px;
            height: 36px;
            margin-bottom: 8px;
        }

        /* 常见问题 */
        .ip-faq {
            padding: 70px 0;
            background: #f8fafc;
        }
        .faq-item {
            max-width: 850px;
            margin: 0 auto 15px;
            background: #fff;
            padding: 18px 22px;
            border-radius: 8px;
            border-left: 3px solid #165DFF;
        }
        .faq-item h4 {
            font-size: 16px;
            margin-bottom: 6px;
            color: #222;
        }
        .faq-item p {
            font-size: 14px;
            color: #666;
        }

        /* 手机端适配 */
        @media (max-width: 992px) {
            .feature-grid, .price-grid, .scene-grid {
                grid-template-columns: repeat(2, 1fr);
            }
            .principle-wrap {
                flex-direction: column;
                gap: 20px;
            }
            .principle-img, .principle-text {
                flex: none;
                width: 100%;
            }
        }
        @media (max-width: 768px) {
            .feature-grid, .price-grid, .scene-grid {
                grid-template-columns: 1fr;
            }
        }