.main-9 {
    width: 100%;
    flex-shrink: 0;
    background: rgba(255, 255, 255, 0.5);
    backdrop-filter: blur(2px);
    padding: 20px 25px;
    box-shadow: 0 8px 20px rgba(0, 20, 40, 0.06);
    margin-top:20px;
    }
        @media (max-width: 767px) {              /* ========= MODIFIED START (专业网格适配为2列) ========= */
            .main-9 {
                padding: 10px 2px;
                margin-top: 10px;
            }
            .majors-grid {
                grid-template-columns: repeat(2, 1fr) !important;
                gap: 12px !important;
                margin: 0 !important;
            }
            .major-cell {
                height: auto !important;
                padding: 10px 8px 12px 8px !important;
                backdrop-filter: blur(2px);
            }
            .major-name {
                white-space: normal !important;
                font-size: 15px !important;
                line-height: 1.35 !important;
                margin-bottom: 10px !important;
                word-break: break-word;
                text-align: center;
            }
            .major-name a {
                font-size: 12px;
                font-weight: 600;
                display: inline-block;
            }
            .hot-detail-row {
                display: flex !important;
                flex-wrap: wrap !important;
                align-items: center;
                justify-content: space-between;
                gap: 6px;
                margin-top: 4px;
            }
            .hot-left {
                gap: 3px;
            }
            .hot-label {
                font-size: 12px !important;
            }
            .hot-value {
                font-size: 15px !important;
            }
            .detail-link {
                padding: 5px 10px !important;
                font-size: 12px !important;
                white-space: nowrap;
            }
            /* ========= MODIFIED END ========= */
            
            /* ========= MODIFIED START (分类导航栏适配) ========= */

            /* ========= MODIFIED END ========= */
            

        }

        /* 第一区域：四个院校分类导航 (PC默认样式) */

        /* 第二区域：20个专业网格 (每个卡片高100px，总高500px，5行) */
        .majors-grid {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 8px;
            background: transparent;
            margin: 20px 0 20px 0;
        }
        .major-cell {
            background: #ffffffd9;
            backdrop-filter: blur(2px);
            border: 1px solid #e2ebf6;
            display: flex;
            flex-direction: column;
            padding: 12px 8px 8px 8px;
            box-shadow: 0 4px 8px rgba(0,20,40,0.06);
            transition: background 0.15s, transform 0.1s;
            height: 90px;
            overflow: hidden;
        }
        .major-cell:hover {
            background: #f0f7ff;
            border-color: #b0c8e6;
        }

        .major-cell .major-name {
            text-align: center;
            font-size: 16px;
            line-height: 1.4;
            font-weight: 600;
            margin-bottom: 8px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
        }
        .major-name a {
            text-decoration: none;
            color: #1e3a6b;
            transition: color 0.15s;
        }
        .major-name a:hover {
            color: #e65100;
            text-underline-offset: 3px;
        }

        .major-cell .hot-detail-row {
            display: flex;
            justify-content: space-between;
            align-items: center;
            font-size: 14px;
            margin-top: 4px;
        }
        .hot-left {
            display: flex;
            align-items: baseline;
            gap: 4px;
            color: #2c3e50;
            font-size: 13px;
        }
        .hot-label {
            font-weight: 450;
            color: #4a5a6e;
        }
        .hot-value {
            color: #c00;
            font-weight: 700;
            font-size: 16px;
        }
        .detail-link {
            text-decoration: none;
            color: #2A60B2;
            font-weight: 500;
            background: #eef4fa;
            padding: 4px 12px;
            border-radius: 30px;
            border: 1px solid #b8cde0;
            font-size: 13px;
            transition: 0.15s;
            white-space: nowrap;
        }
        .detail-link:hover {
            background: #2A60B2;
            color: white;
            border-color: #1f4a8a;
        }