main {
  display: flex;
  justify-content: space-between;
  flex-direction: row;
  flex-wrap: wrap;
  gap: 10px;
}
main .left-block {
  width: 33%;
  min-width: 0;
}
main .right-block {
  width: 64%;
  min-width: 0;
}
.card-box {
  display: grid;
  gap: 10px;
}
.card-box.column-2 {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}
.card-box.column-3 {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}
.card-box > * {
  min-width: 0;
}
.card {
  border-left: 5px solid transparent;
  display: block;
  margin: 0;
  padding: 3px 20px;
  text-align: left;
  cursor: default;
  border-left: 6px solid var(--color-grey-shallow);
  text-decoration: none;
  transition: all 0.1s;
}
.card h6 {
  margin: 3px 0;
  padding: 0;
  color: var(--color-grey);
  transition: all 0.1s;
}
.card:hover {
  border-left: 6px solid var(--color-active);
  transition: all 0.1s;
}
.card:hover h6 {
  color: var(--color-theme);
  transition: all 0.1s;
}
.card:active {
  background-color: var(--color-active-shallow);
}
h5.divider {
  color: var(--color-text);
  display: flex;
  align-items: center;
}
h5.divider::before {
  content: "·";
  margin-right: 10px;
  font-weight: bold;
}
h5.divider::after {
  content: "";
  display: block;
  height: 1px;
  background: var(--color-hr);
  flex: 1;
  margin-left: 20px;
}
header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: transparent;
  padding-left: 5px;
  padding-right: 5px;
}
header .header-title {
  color: var(--color-theme);
  flex: 1;
}
nav a, header a, nav button, header button {
  color: var(--color-text);
  text-decoration: none;
  border: none;
  padding: 5px 12px;
  border-radius: 15px;
  transition: all 0.1s;
  font-weight: bold;
}
nav a:hover, header a:hover, nav a:active, header a:active, nav button:hover, header button:hover, nav button:active, header button:active {
  color: var(--color-contrast-text);
  background-color: var(--color-active);
  border: none;
  transition: all 0.1s;
  font-weight: bold;
}
@media (max-width: 820px) {
  main {
    flex-direction: column;
  }
  main .left-block, main .right-block {
    width: 100%;
  }
}
@media (max-width: 620px) {
  .card-box.column-2, .card-box.column-3 {
    grid-template-columns: minmax(0, 1fr);
  }
  header {
    flex-wrap: wrap;
  }
}