.tag-chip{color:#616161;margin-right:5px;text-decoration:none}.tag-chip .chip{color:#444}.tag-chip:hover div{color:#fff;background-color:#616161}.tag-div .divider{margin:20px 0}.post-date{margin-left:10px;color:#666}ul:not(.browser-default).tag-post{padding-left:0}ul:not(.browser-default).tag-post a{text-decoration:none;color:#00695c}ul:not(.browser-default).tag-post li{list-style-position:inside;padding-left:20px}ul:not(.browser-default).tag-post li:hover{list-style-type:circle;color:#ed143d}main div .row{margin-top:20px}#page-info h3{font-weight:bold;margin-bottom:5px}

/* Lecture Note Header Image */
.lecture-header-image {
  position: relative;
  width: 100%;
  height: 300px;
  overflow: hidden;
  margin-bottom: 2rem;
}

.lecture-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.lecture-header-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.8) 0%, rgba(0,0,0,0.4) 50%, transparent 100%);
  padding: 2rem;
  color: white;
}

.lecture-header-overlay h1 {
  margin: 0;
  color: white;
  font-size: 2.5rem;
  font-weight: 700;
  text-shadow: 2px 2px 4px rgba(0,0,0,0.5);
}

@media screen and (max-width: 768px) {
  .lecture-header-image {
    height: 200px;
  }
  
  .lecture-header-overlay h1 {
    font-size: 1.8rem;
  }
  
  .lecture-header-overlay {
    padding: 1rem;
  }
}