.major-page-section {
    padding: 40px 20px 60px;
}

.major-page-section .container {
    max-width: 1300px;
    margin: 0 auto;
    display: flex;
    gap: 30px;
}

/* 左侧菜单 */
.major-sidebar {
    flex-shrink: 0;
    width: 200px;
}

.major-sidebar .menu-item {
    display: block;
    padding: 16px 20px;
    background-color: #f5f7fa;
    color: #333333;
    font-size: 16px;
    text-decoration: none;
    text-align: center;
    border-left: 3px solid transparent;
    transition: all 0.3s ease;
    margin-bottom: 2px;
    cursor: pointer;
}

.major-sidebar .menu-item:hover {
    background-color: #e8ecf5;
    color: #001488;
}

.major-sidebar .menu-item.active {
    background-color: #001488;
    color: #ffffff;
    border-left-color: #FFEA00;
    font-weight: 600;
}

/* 右侧专业列表 */
.major-list {
    flex: 1;
    min-width: 0;
}

.major-list .list-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    padding-bottom: 12px;
    border-bottom: 2px solid #001488;
}

.major-list .list-header h2 {
    font-size: 20px;
    color: #001488;
    font-weight: 600;
}

.major-list .list-header .count {
    font-size: 14px;
    color: #999999;
}

.major-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
}

/* 专业卡片 */
.major-card {
    display: block;
    text-decoration: none;
    border-radius: 4px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.major-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 20, 136, 0.25);
}

.major-card .card-color {
    width: 100%;
    height: 140px;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
}

.major-card .card-color::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 60%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.major-card:hover .card-color::before {
    opacity: 1;
}

.major-card .card-color::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: #FFEA00;
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.major-card:hover .card-color::after {
    transform: scaleX(1);
}

.major-card .major-name {
    position: relative;
    z-index: 1;
    color: #ffffff;
    font-size: 16px;
    font-weight: 600;
    text-align: center;
    padding: 0 12px;
    line-height: 1.4;
    text-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s ease;
}

.major-card:hover .major-name {
    transform: scale(1.05);
}

/* 响应式 */
@media screen and (max-width: 992px) {
    .major-page-section .container {
        gap: 20px;
    }

    .major-sidebar {
        width: 160px;
    }

    .major-sidebar .menu-item {
        padding: 12px 14px;
        font-size: 14px;
    }

    .major-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 16px;
    }

    .major-card .card-color {
        height: 120px;
    }

    .major-card .major-name {
        font-size: 14px;
    }
}

@media screen and (max-width: 768px) {
    .major-page-section .container {
        flex-direction: column;
    }

    .major-sidebar {
        width: 100%;
        display: flex;
        gap: 0;
    }

    .major-sidebar .menu-item {
        flex: 1;
        border-left: none;
        border-bottom: 3px solid transparent;
        margin-bottom: 0;
    }

    .major-sidebar .menu-item.active {
        border-left-color: transparent;
        border-bottom-color: #FFEA00;
    }

    .major-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 12px;
    }

    .major-card .card-color {
        height: 100px;
    }

    .major-card .major-name {
        font-size: 13px;
        padding: 0 8px;
    }
}

@media screen and (max-width: 480px) {
    .major-page-section {
        padding: 25px 10px 40px;
    }

    .major-sidebar .menu-item {
        padding: 10px 8px;
        font-size: 13px;
    }

    .major-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 10px;
    }

    .major-card .card-color {
        height: 90px;
    }

    .major-card .major-name {
        font-size: 12px;
        padding: 0 6px;
    }
}