* { box-sizing: border-box; }
    body {
      margin: 0;
      height: 100vh;
      background: #000;
      font-family: 'Noto Sans Mono', monospace;
      color: #18f018;

    }
   .box {
  border: 0.1em solid #18f018;
  padding: 0 2em 5px 2em;
}

  .sidebar {
  position: fixed;
  top: 15vh;
  width: 20vw;
  height: 80vh;
  display: flex;
  flex-direction: column;
  align-items: center;        
  text-align: center;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 5vh 0;
}

.visitor-counter {
  margin-top: 12px;
  display: block;
}

.sidebar-gallery {
  width: 100%;
  max-width: 260px;       
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px;
  margin: 16px auto 0;   
  justify-items: center; 
}

.sidebar-gallery img {
  width: 100%;
  height: auto;
  display: block;
  border: 0.1em solid #18f018;
}


  .header {
    width: min(700px, 50vw);
  }
  .main {
  position: fixed;
  top: 15vh;
  left: 50%;
  transform: translateX(-50%);

  width: min(700px, 50vw);
  height: 80vh;

  overflow-y: auto;.main {
    width: min(700px, 50vw);
    margin: 15vh auto 0;   
    height: 80vh;           
    overflow-y: auto;       
    position: sticky;      
    top: 10vh;      
  }
}

.page-title {
  font-size: clamp(2.75rem, 5vw, 3.75rem);
  margin: 0.35em 0 0.4em;
  text-align: center;
}
a {
  color: inherit;
  text-decoration: none;
}

a:hover {
  cursor: pointer;
}

.prompt-overlay{
  position: fixed;
  left: 50%;
  top: 4vh;                         
  transform: translateX(-50%);
  z-index: 9999;
  pointer-events: none;
  white-space: nowrap;
  font-size: clamp(1.2rem, 3vw, 2.2rem);
  line-height: 1;                 
  padding: 0.15em 0.6em;

  color: #18f018;
  background: #000;                 
}