.course-quick-nav ~ main,
.course-quick-nav ~ .course-shell {
  padding-bottom: 96px;
}

.course-quick-nav {
  position: fixed;
  right: 18px;
  bottom: 18px;
  left: 18px;
  z-index: 100;
  display: grid;
  grid-template-columns: auto auto minmax(220px, 1fr);
  align-items: stretch;
  gap: 8px;
  pointer-events: none;
}

.course-quick-nav a {
  display: inline-flex;
  min-height: 48px;
  align-items: center;
  justify-content: center;
  padding: 9px 15px;
  border: 1px solid rgba(111, 32, 31, 0.18);
  border-radius: 16px;
  color: #6f201f;
  background: rgba(255, 249, 239, 0.95);
  box-shadow: 0 8px 24px rgba(72, 37, 26, 0.16);
  font-size: 12px;
  font-weight: 750;
  text-decoration: none;
  backdrop-filter: blur(12px);
  pointer-events: auto;
}

.course-quick-nav a.is-home {
  gap: 10px;
  min-width: 192px;
  justify-content: flex-start;
  padding: 8px 17px 8px 9px;
  border-color: rgba(255, 255, 255, 0.18);
  color: #fff9ef;
  background: #6f201f;
  box-shadow: 0 13px 32px rgba(72, 27, 24, 0.32);
}

.course-quick-nav .home-icon {
  display: grid;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  place-items: center;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.14);
  font-size: 18px;
}

.course-quick-nav .is-home strong,
.course-quick-nav .is-home small {
  display: block;
}

.course-quick-nav .is-home strong {
  font-size: 14px;
  letter-spacing: 0.04em;
}

.course-quick-nav .is-home small {
  margin-top: 2px;
  color: rgba(255, 249, 239, 0.72);
  font-size: 9px;
  font-weight: 600;
}

.course-quick-nav a.is-scene {
  padding-inline: 18px;
}

.course-quick-nav a.is-next {
  color: #fff9ef;
  border-color: rgba(255, 255, 255, 0.12);
  background: #4f6d3a;
}

@media (max-width: 620px) {
  .course-quick-nav {
    right: 10px;
    bottom: 10px;
    left: 10px;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
  }

  .course-quick-nav a {
    max-width: none;
    padding-inline: 12px;
    font-size: 11px;
    text-align: center;
  }

  .course-quick-nav a.is-home {
    grid-column: 1 / -1;
    min-width: 0;
  }

  .course-quick-nav a.is-next {
    min-width: 0;
  }

  .course-quick-nav ~ main,
  .course-quick-nav ~ .course-shell {
    padding-bottom: 156px;
  }
}