.nn-topic-layout {
  gap: 18px;
}

.nn-topic-head {
  background:
    linear-gradient(120deg, rgba(10, 132, 255, 0.13), rgba(48, 209, 88, 0.08)),
    rgba(255, 255, 255, 0.88);
}

.nn-deep-dive {
  display: grid;
  gap: 16px;
}

.nn-lesson-head,
.nn-band {
  border: 1px solid rgba(120, 139, 168, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.68),
    0 12px 28px rgba(36, 54, 84, 0.06);
}

.nn-lesson-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 22px;
}

.nn-number-badge {
  display: grid;
  place-items: center;
  min-width: 140px;
  min-height: 110px;
  border: 1px solid rgba(10, 132, 255, 0.18);
  border-radius: 8px;
  background: rgba(10, 132, 255, 0.08);
}

.nn-number-badge span {
  color: #0a64c7;
  font-size: 3rem;
  font-weight: 900;
}

.nn-number-badge small {
  color: #667085;
  font-weight: 760;
}

.nn-lesson-nav,
.nn-route,
.nn-check-grid,
.nn-lab-grid,
.nn-mis-grid,
.nn-example-grid,
.nn-final {
  display: grid;
  gap: 10px;
}

.nn-lesson-nav {
  position: sticky;
  top: 84px;
  z-index: 12;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  padding: 8px;
  border: 1px solid rgba(120, 139, 168, 0.18);
  border-radius: 8px;
  background: rgba(248, 250, 253, 0.82);
  backdrop-filter: saturate(180%) blur(18px);
}

.nn-lesson-nav button,
.nn-route button,
.nn-options button,
.nn-queue button {
  border: 1px solid rgba(120, 139, 168, 0.22);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.68);
  color: #344054;
  font-weight: 760;
}

.nn-lesson-nav button {
  min-height: 34px;
}

.nn-band {
  padding: 18px;
  scroll-margin-top: 96px;
}

.nn-route {
  grid-template-columns: repeat(6, minmax(0, 1fr));
}

.nn-route button {
  display: grid;
  justify-items: center;
  gap: 6px;
  min-height: 72px;
  padding: 10px;
}

.nn-route span {
  display: grid;
  place-items: center;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  color: white;
  background: linear-gradient(135deg, #0a84ff, #30d158);
}

.nn-check-grid {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.nn-check-grid article,
.nn-mis-grid article,
.nn-final article,
.nn-example-grid article {
  padding: 14px;
  border: 1px solid rgba(120, 139, 168, 0.18);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.62);
}

.nn-options {
  display: grid;
  gap: 8px;
}

.nn-options button {
  min-height: 38px;
  padding: 8px 10px;
  text-align: left;
}

.nn-options button.is-selected {
  border-color: rgba(10, 132, 255, 0.34);
  background: rgba(10, 132, 255, 0.09);
}

.nn-options button.is-correct {
  border-color: rgba(48, 209, 88, 0.45);
  background: rgba(48, 209, 88, 0.12);
}

.nn-options button.is-wrong {
  border-color: rgba(255, 69, 58, 0.45);
  background: rgba(255, 69, 58, 0.1);
}

.nn-lab-grid {
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1.3fr);
  align-items: start;
}

.nn-object-panel {
  display: grid;
  gap: 12px;
}

.nn-objects {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  min-height: 190px;
  padding: 12px;
  border: 1px solid rgba(120, 139, 168, 0.18);
  border-radius: 8px;
  background: rgba(10, 132, 255, 0.04);
}

.nn-objects span {
  display: grid;
  place-items: center;
  aspect-ratio: 1;
  border-radius: 50%;
  color: white;
  background: linear-gradient(135deg, #0a84ff, #30d158);
  font-weight: 900;
}

.nn-figure {
  width: 100%;
  min-height: 240px;
  border: 1px solid rgba(120, 139, 168, 0.18);
  border-radius: 8px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.78)),
    linear-gradient(90deg, rgba(10, 132, 255, 0.1) 1px, transparent 1px),
    linear-gradient(rgba(88, 86, 214, 0.08) 1px, transparent 1px);
  background-size: auto, 32px 32px, 32px 32px;
}

.nn-stepper {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.nn-queue {
  display: grid;
  grid-template-columns: repeat(10, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 12px;
}

.nn-queue button {
  min-height: 52px;
}

.nn-queue button.is-active {
  color: #fff;
  background: linear-gradient(135deg, #0a84ff, #30d158);
}

.nn-example-grid {
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.nn-example-grid article {
  display: grid;
  gap: 7px;
  min-height: 160px;
}

.nn-case-scene {
  display: grid;
  gap: 6px;
  min-height: 118px;
  padding: 10px;
  overflow: hidden;
  border: 1px solid rgba(120, 139, 168, 0.16);
  border-radius: 8px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.84), rgba(255, 255, 255, 0.84)),
    linear-gradient(90deg, rgba(10, 132, 255, 0.08) 1px, transparent 1px),
    linear-gradient(rgba(10, 132, 255, 0.08) 1px, transparent 1px);
  background-size: auto, 24px 24px, 24px 24px;
}

.nn-case-scene i {
  display: grid;
  place-items: center;
  color: #fff;
  font-style: normal;
  font-size: 0.72rem;
  font-weight: 900;
}

.nn-apples,
.nn-shopping {
  grid-template-columns: repeat(5, 1fr);
  align-content: start;
}

.nn-apples i {
  aspect-ratio: 1;
  border-radius: 52% 48% 56% 44%;
  background: #e25442;
}

.nn-apples i::before {
  content: "";
  width: 10px;
  height: 5px;
  margin-top: -10px;
  border-radius: 999px;
  background: #30a46c;
}

.nn-rank {
  grid-template-columns: repeat(5, 1fr);
  align-content: center;
}

.nn-rank i {
  aspect-ratio: 1;
  border-radius: 999px 999px 12px 12px;
  background: #98a2b3;
}

.nn-rank i.is-on,
.nn-stations i.is-on,
.nn-levels i.is-on {
  background: #0a84ff;
  box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.16);
}

.nn-floor {
  grid-auto-rows: 18px;
  align-content: end;
  width: 96px;
  margin-inline: auto;
  border: 4px solid #667085;
  border-bottom-width: 8px;
  background: rgba(102, 112, 133, 0.08);
}

.nn-floor i {
  color: #435268;
  background: rgba(10, 132, 255, 0.14);
  border-bottom: 1px solid rgba(102, 112, 133, 0.24);
}

.nn-floor i.is-on {
  color: #fff;
  background: #0a84ff;
}

.nn-stations {
  grid-template-columns: repeat(6, 1fr);
  align-content: center;
  position: relative;
}

.nn-stations::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 50%;
  height: 5px;
  border-radius: 999px;
  background: #98a2b3;
}

.nn-stations i {
  z-index: 1;
  width: 30px;
  height: 30px;
  border-radius: 999px;
  background: #667085;
}

.nn-pages {
  position: relative;
  display: block;
}

.nn-pages b {
  position: absolute;
  z-index: 2;
  left: 16px;
  top: 14px;
  color: #0a64c7;
  font-size: 2.2rem;
  font-weight: 950;
}

.nn-pages i {
  position: absolute;
  left: calc(80px + var(--turn) * 8px);
  top: calc(24px + var(--turn) * 4px);
  width: 72px;
  height: 82px;
  transform: rotate(calc(var(--turn) * -2deg));
  border: 1px solid rgba(120, 139, 168, 0.28);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 8px 18px rgba(36, 54, 84, 0.08);
}

.nn-pages small {
  position: absolute;
  left: 16px;
  right: 12px;
  bottom: 10px;
  color: #435268;
  font-weight: 800;
}

.nn-score {
  justify-items: center;
  align-content: center;
}

.nn-score strong {
  color: #0a64c7;
  font-size: 2.4rem;
  font-weight: 950;
}

.nn-score span {
  color: #667085;
  font-weight: 850;
}

.nn-score i {
  display: inline-block;
  width: 16px;
  height: 16px;
  margin: 2px;
  clip-path: polygon(50% 0, 61% 35%, 98% 35%, 68% 56%, 79% 92%, 50% 70%, 21% 92%, 32% 56%, 2% 35%, 39% 35%);
  background: #f5b544;
}

.nn-calendar {
  grid-template-columns: repeat(7, 1fr);
}

.nn-calendar i {
  min-height: 22px;
  border-radius: 6px;
  color: #667085;
  background: rgba(102, 112, 133, 0.08);
}

.nn-calendar i.is-past {
  color: #0a64c7;
  background: rgba(10, 132, 255, 0.12);
}

.nn-calendar i.is-on {
  color: #fff;
  background: #0a84ff;
}

.nn-shopping i {
  min-height: 28px;
  border-radius: 6px 6px 12px 12px;
  background: #30a46c;
}

.nn-tower {
  align-content: end;
}

.nn-tower i {
  width: calc(34px + var(--w, 0px));
  min-height: 18px;
  margin-inline: auto;
  border-radius: 4px;
  color: #435268;
  background: #d7e5fb;
  border: 1px solid rgba(76, 131, 240, 0.22);
}

.nn-levels {
  grid-template-columns: repeat(6, 1fr);
  align-content: center;
}

.nn-levels i {
  min-height: 30px;
  border-radius: 8px;
  background: #667085;
}

.nn-example-grid span,
.nn-example-grid small {
  width: max-content;
  padding: 4px 8px;
  border-radius: 999px;
  background: rgba(10, 132, 255, 0.1);
  color: #0a64c7;
  font-size: 0.72rem;
  font-weight: 780;
}

.nn-mis-grid {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.nn-result,
.nn-error-list {
  padding: 11px 12px;
  border: 1px solid rgba(10, 132, 255, 0.16);
  border-radius: 8px;
  background: rgba(10, 132, 255, 0.06);
  color: #435268;
  font-weight: 700;
  line-height: 1.65;
}

.nn-final {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.nn-advanced p {
  margin-bottom: 0;
}

@media (max-width: 1180px) {
  .nn-lesson-nav,
  .nn-route,
  .nn-example-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .nn-mis-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .nn-lesson-head,
  .nn-lab-grid,
  .nn-check-grid,
  .nn-final,
  .nn-route,
  .nn-example-grid,
  .nn-mis-grid {
    grid-template-columns: 1fr;
  }

  .nn-lesson-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .nn-queue {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}