body {
  font-family: 'Latin Modern Math', serif;
  font-size: 15px;
  line-height: 1.5;
  background: #ffff;          
  color: #000;
  margin: 0;
  min-height: 100vh;

  
  display: flex;
  justify-content: center;
  align-items: center;

  position: relative;        
}

hr {
  border: none;               
  border-top: 1px solid rgba(0,0,0,0.15);  
  margin: 2rem 0;              
}

h1 {
  position: relative; 
}

h1 .ref {
  position: absolute;
  right: 0;  
}

.ref {
  right: 0;            
  font-size: 0.8em;
  font-weight: normal;
  vertical-align: super;
}

.columns h3 {
  display: flex;
  justify-content: space-between;  
  align-items: baseline;
  margin: 0 0 0.5rem;
}

.columns h3 .ref {
  position: static;  
  font-size: 0.8em;
  opacity: 0.7;
}

/* The noise layer */
body::before {
  content: "";
  position: fixed;            
  inset: 0;
  background: #aaaaaa;        
  filter: url(#noiseFilter);  
  opacity: 0.10;  
  pointer-events: none;       
  z-index: 0;                 
}


main {
  max-width: 640px;           
  text-align: left;           
  padding: 0 20px;
  position: relative;
  z-index: 1;
}


.columns {
  display: flex;
  justify-content: space-between;
  gap: 40px;
  margin-top: 2rem;
  position: relative; 
}
.columns::before {
  content: "";
  position: absolute;
  top: 2.4rem;        
  left: 50%;         
  width: 1.3px;
  height: 50px;
  background: rgba(0,0,0,0.2); 
}

.columns > div {
  text-align: left;           
  flex: 1;
}

.column {
  flex: 1;
  text-align: left;
}




h1, h3 { font-weight: normal; }
a { text-decoration: none; color: #000; }
ul { list-style: none; padding: 0; margin: 0; }
.ref { font-size: 0.8em; vertical-align: super; }

.name-block {
  position: relative;
  text-align: left;     
  margin-top: 2rem;    
  margin-bottom: 1rem;
  opacity: 0.4
}

.name-label {
  display: block;
  font-size: 2.5rem;
  color: #111;     
  letter-spacing: 0.08em;
  
  margin-top: 0rem;
  text-align: left;
}

.katex {
  font-size: 1.05em;    
  color: #111;          
}

.name-label .katex {
  color: rgba(0,0,0,0.25);
}


ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

li {
  display: flex;
  justify-content: space-between; 
  align-items: center;
  margin-bottom: 0.5rem;
}

li a {
  text-decoration: none;
  color: inherit;
  position: relative;
}

.item-icon {
  margin-left: 12px;  
  font-size: 1rem;
  opacity: 0.8;
}



li a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 3px;
  width: 0;
  height: 1px;
  background: currentColor;
  transition: width 0.3s ease;
}

li a:hover::after {
  width: 100%;
}