:root {
  --tree-bg: #eef2f5;
  --tree-surface: #ffffff;
  --tree-ink: #163047;
  --tree-copy: #5f7181;
  --tree-line: #cbd5df;
  --tree-line-strong: #aab9c8;
  --tree-outline: #d8e1e8;
  --tree-shadow: 0 14px 32px rgba(16, 24, 40, 0.06);
  --track-panel-width: 1280px;
}

body.techtree-layout {
  margin: 0;
  font-family: Georgia, "Times New Roman", serif;
  background:
    linear-gradient(180deg, #f6f8fa 0%, #eef2f5 100%);
  color: var(--tree-ink);
}

.techtree-shell {
  max-width: 1440px;
  margin: 0 auto;
  padding: 24px 24px 84px;
}

.techtree-intro {
  max-width: 820px;
  margin: 0 auto 20px;
  text-align: center;
}

.techtree-kicker,
.chapter-label,
.node-chapter,
.node-status {
  font-family: "Segoe UI", Arial, sans-serif;
}

.techtree-kicker {
  margin: 0 0 12px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #5e7284;
}

.techtree-intro h1 {
  margin: 0;
  font-size: clamp(2.3rem, 4vw, 3.5rem);
  line-height: 1.02;
  letter-spacing: -0.045em;
}

.techtree-lead {
  margin: 14px auto 0;
  max-width: 760px;
  color: #4b6172;
  font-size: 1.02rem;
  line-height: 1.68;
}

.techtree-stage {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(216, 225, 232, 0.95);
  border-radius: 28px;
  box-shadow: 0 22px 44px rgba(15, 23, 42, 0.05);
  padding: 34px 32px 48px;
  backdrop-filter: blur(6px);
}

.track-overview-stage {
  background: rgba(255, 255, 255, 0.88);
  border: 1px solid rgba(216, 225, 232, 0.95);
  border-radius: 28px;
  box-shadow: 0 22px 44px rgba(15, 23, 42, 0.05);
  padding: 30px 28px;
}

.track-overview-wrap {
  position: relative;
  max-width: var(--track-panel-width);
  margin: 0 auto;
}

.track-info-button,
.track-xp-button {
  position: absolute;
  left: calc(100% + 18px);
  display: grid;
  place-items: center;
  width: 72px;
  height: 72px;
  border: 3px solid #d49b12;
  border-radius: 50%;
  color: #112c46;
  cursor: help;
  box-shadow: 0 16px 28px rgba(162, 117, 12, 0.22);
}

.track-info-button {
  top: 14px;
  background: linear-gradient(180deg, #ffe26a 0%, #ffc83d 100%);
  z-index: 7;
}

.track-xp-button {
  top: 104px;
  background: linear-gradient(180deg, #9adf7d 0%, #4eac20 100%);
  color: #ffffff;
  z-index: 5;
}

.track-info-button:focus-visible,
.track-xp-button:focus-visible {
  outline: 4px solid rgba(36, 79, 121, 0.32);
  outline-offset: 4px;
}

.track-info-tooltip {
  position: absolute;
  top: calc(100% + 12px);
  right: 0;
  width: min(300px, 72vw);
  padding: 14px 16px;
  border: 1px solid rgba(212, 155, 18, 0.48);
  border-radius: 14px;
  background: #fff9dc;
  color: #17324a;
  font: 700 0.95rem/1.45 "Segoe UI", Arial, sans-serif;
  text-align: left;
  box-shadow: 0 18px 34px rgba(15, 23, 42, 0.16);
  opacity: 0;
  pointer-events: none;
  transform: translateY(-4px);
  transition: opacity 0.16s ease, transform 0.16s ease;
  z-index: 20;
}

.track-info-button:hover .track-info-tooltip,
.track-info-button:focus-visible .track-info-tooltip,
.track-xp-button:hover .track-info-tooltip,
.track-xp-button:focus-visible .track-info-tooltip {
  opacity: 1;
  transform: translateY(0);
}

.track-overview-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
}

.curriculum-framework {
  display: grid;
  gap: 12px;
}

.curriculum-entry {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  border: 1px solid #d9e4ec;
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.82);
  padding: 16px 18px;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.035);
}

.curriculum-entry h2 {
  margin: 8px 0 0;
  color: #17304a;
  font-size: 1.18rem;
  line-height: 1.18;
}

.curriculum-entry p {
  margin: 6px 0 0;
  color: #4b6172;
  line-height: 1.5;
}

.curriculum-open-button,
.curriculum-modal-close {
  border: 0;
  font-family: "Segoe UI", Arial, sans-serif;
  cursor: pointer;
}

.curriculum-open-button {
  min-height: 42px;
  padding: 0 15px;
  border-radius: 12px;
  background: #17304a;
  color: #ffffff;
  font-weight: 850;
  white-space: nowrap;
}

.curriculum-open-button:hover {
  background: #10263a;
}

.curriculum-modal {
  position: fixed;
  inset: 0;
  display: none;
  place-items: center;
  padding: 28px;
  z-index: 1000;
}

.curriculum-modal.is-open {
  display: grid;
}

.curriculum-modal-backdrop {
  position: absolute;
  inset: 0;
  background: rgba(12, 24, 36, 0.54);
  backdrop-filter: blur(5px);
}

.curriculum-modal-panel {
  position: relative;
  width: min(1120px, 100%);
  max-height: min(86vh, 900px);
  overflow: auto;
  display: grid;
  gap: 18px;
  padding: 28px;
  border-radius: 24px;
  border: 1px solid rgba(216, 225, 232, 0.95);
  background: #f8fbfd;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.28);
  outline: none;
}

body.curriculum-modal-open {
  overflow: hidden;
}

.curriculum-modal-close {
  position: sticky;
  top: 0;
  justify-self: end;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  margin-bottom: -54px;
  border-radius: 50%;
  background: #ffffff;
  color: #17304a;
  font-size: 1.5rem;
  font-weight: 900;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.1);
  z-index: 2;
}

.curriculum-modal-intro {
  max-width: 780px;
}

.curriculum-modal-intro h2 {
  margin: 10px 0 0;
  color: #17304a;
  font-size: clamp(1.8rem, 3.6vw, 2.8rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
}

.curriculum-modal-intro p {
  margin: 12px 0 0;
  color: #4b6172;
  font-size: 1rem;
  line-height: 1.68;
}

.curriculum-logic-card {
  display: grid;
  grid-template-columns: minmax(0, 1.1fr) minmax(360px, 0.9fr);
  gap: 22px;
  align-items: center;
  padding: 22px 24px;
  border: 1px solid #d9e4ec;
  border-radius: 22px;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.94) 0%, rgba(241, 247, 250, 0.92) 100%);
  box-shadow: 0 14px 28px rgba(15, 23, 42, 0.045);
}

.curriculum-kicker {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 4px 10px;
  border-radius: 999px;
  background: #edf3f8;
  color: #4f6c84;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.curriculum-logic-card h2,
.curriculum-logic-card h3 {
  margin: 10px 0 0;
  color: #17304a;
  font-size: clamp(1.45rem, 2.4vw, 2rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.curriculum-logic-card p {
  margin: 10px 0 0;
  max-width: 74ch;
  color: #4b6172;
  line-height: 1.64;
}

.curriculum-flow {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
}

.curriculum-flow span {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 54px;
  padding: 8px 10px;
  border-radius: 14px;
  border: 1px solid #d5e0e9;
  background: #ffffff;
  color: #17304a;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 850;
  text-align: center;
  box-shadow: 0 8px 16px rgba(15, 23, 42, 0.04);
}

.curriculum-flow span:not(:last-child)::after {
  content: "→";
  position: absolute;
  right: -11px;
  top: 50%;
  transform: translateY(-50%);
  color: #7890a2;
  font-weight: 900;
  z-index: 2;
}

.curriculum-semester-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.curriculum-semester-card {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 20px;
  border: 1px solid #dbe4ec;
  background: #fbfdff;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.04);
}

.curriculum-semester-card.is-linked {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.96) 0%, rgba(246, 251, 248, 0.94) 100%);
  border-color: #c9dece;
}

.curriculum-semester-card.is-planned {
  background: linear-gradient(180deg, rgba(250, 252, 253, 0.96) 0%, rgba(242, 246, 249, 0.94) 100%);
}

.curriculum-semester-head,
.curriculum-progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  font-family: "Segoe UI", Arial, sans-serif;
}

.curriculum-semester-head span {
  color: #4f6c84;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.curriculum-semester-head strong {
  min-height: 24px;
  padding: 5px 9px;
  border-radius: 999px;
  background: #edf3f8;
  color: #4f6c84;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.curriculum-semester-card h3 {
  margin: 0;
  color: #17304a;
  font-size: 1.22rem;
  line-height: 1.16;
}

.curriculum-semester-card p {
  margin: 0;
  color: #4b6172;
  line-height: 1.55;
}

.curriculum-progress {
  padding: 10px;
  border-radius: 13px;
  border: 1px solid #dce6ee;
  background: rgba(255, 255, 255, 0.68);
}

.curriculum-progress-row {
  color: #4b6172;
  font-size: 0.82rem;
}

.curriculum-progress-row strong {
  color: #17304a;
  font-size: 0.72rem;
  font-weight: 900;
}

.curriculum-progress-track {
  overflow: hidden;
  height: 7px;
  margin-top: 8px;
  border-radius: 999px;
  background: #e7edf2;
}

.curriculum-progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #3b7a57, #88bc73);
}

.curriculum-semester-detail {
  display: grid;
  gap: 7px;
  padding-top: 10px;
  border-top: 1px solid rgba(113, 129, 147, 0.16);
}

.curriculum-semester-detail span {
  font-family: "Segoe UI", Arial, sans-serif;
  color: #607282;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.curriculum-semester-detail ul {
  display: grid;
  gap: 5px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.curriculum-semester-detail li {
  color: #29445c;
  font-size: 0.92rem;
  line-height: 1.38;
}

.level-menu {
  position: relative;
  display: grid;
  grid-template-columns: repeat(5, minmax(220px, 1fr));
  gap: 14px;
  align-items: end;
  padding-top: 20px;
  padding-bottom: 8px;
}

.level-menu::after {
  content: "";
  position: absolute;
  left: 2px;
  right: 2px;
  bottom: 0;
  height: 18px;
  border: 1px solid rgba(190, 202, 213, 0.72);
  border-bottom: 0;
  border-radius: 16px 16px 0 0;
  background: linear-gradient(180deg, #e7eef3 0%, #f7fafc 100%);
  box-shadow:
    inset 0 7px 12px rgba(15, 23, 42, 0.05),
    0 -1px 0 rgba(255, 255, 255, 0.82);
  z-index: 0;
}

.level-tile {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-rows: 1fr;
  gap: 0;
  height: 58px;
  overflow: hidden;
  align-items: center;
  padding: 12px 14px;
  border: 1px solid var(--tree-outline);
  border-top: 4px solid #47627b;
  border-bottom-color: rgba(216, 225, 232, 0.58);
  border-radius: 16px 16px 10px 10px;
  background: linear-gradient(180deg, #f7fafc 0%, #edf3f7 100%);
  color: var(--tree-ink);
  cursor: pointer;
  box-shadow: inset 0 -8px 16px rgba(15, 23, 42, 0.04);
  text-align: left;
  transform: translateY(8px);
  transition: height 0.22s ease, border-color 0.16s ease, box-shadow 0.16s ease, transform 0.22s ease, background 0.16s ease;
}

.level-tile:hover {
  transform: translateY(2px);
  border-color: #aebdcc;
  background: linear-gradient(180deg, #ffffff 0%, #f3f8fb 100%);
  box-shadow: inset 0 -6px 14px rgba(15, 23, 42, 0.035);
}

.level-tile.is-active {
  grid-template-rows: 68px auto 7px;
  gap: 10px;
  height: 154px;
  align-items: stretch;
  padding: 14px;
  transform: translateY(-14px);
  background: #ffffff;
  border-bottom-color: var(--tree-outline);
  box-shadow: 0 18px 30px rgba(15, 23, 42, 0.08);
  outline: 4px solid rgba(57, 114, 160, 0.12);
  z-index: 2;
}

.level-tile.is-preview {
  opacity: 0.82;
}

.level-tile-icon {
  display: none;
  place-items: center;
  width: 68px;
  height: 68px;
  border-radius: 16px;
  border: 1px solid #d8e1e8;
  background: #f4f8fb;
}

.level-tile.is-active .level-tile-icon {
  display: grid;
}

.level-tile-icon img {
  width: 42px;
  height: 42px;
  object-fit: contain;
}

.level-tile-copy {
  display: flex;
  align-items: baseline;
  gap: 6px;
  min-width: 0;
  font-family: "Segoe UI", Arial, sans-serif;
}

.level-tile.is-active .level-tile-copy {
  display: grid;
  gap: 4px;
}

.level-tile-copy strong {
  font-size: 0.86rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #607282;
  white-space: nowrap;
}

.level-tile:not(.is-active) .level-tile-copy strong::after {
  content: " -";
}

.level-tile-copy span {
  color: #17304a;
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.18;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.level-tile-progress {
  display: none;
  width: 100%;
  overflow: hidden;
  border-radius: 999px;
  background: #edf2f6;
}

.level-tile.is-active .level-tile-progress {
  display: block;
}

.level-tile-progress span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: #3b7a57;
}

.level-detail {
  display: grid;
  gap: 18px;
}

.track-level-list {
  display: grid;
  gap: 36px;
}

.track-level-section {
  display: grid;
  gap: 20px;
}

.track-level-heading {
  display: grid;
  gap: 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(113, 129, 147, 0.16);
}

.track-level-heading-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.track-level-kicker {
  display: inline-flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: "Segoe UI", Arial, sans-serif;
}

.track-level-semester,
.track-level-number {
  display: inline-flex;
  align-items: center;
  min-height: 30px;
  padding: 6px 11px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
  white-space: nowrap;
}

.track-level-semester {
  background: #17304a;
  color: #ffffff;
  box-shadow: 0 8px 16px rgba(23, 48, 74, 0.14);
}

.track-level-number {
  border: 1px solid color-mix(in srgb, var(--track-card-strong, #47627b) 28%, #d9e2e9);
  background: color-mix(in srgb, var(--track-card-strong, #47627b) 11%, #ffffff);
  color: var(--track-card-heading, #17304a);
}

.track-level-progress-pill {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--track-card-strong, #47627b) 18%, #d9e2e9);
  background: color-mix(in srgb, var(--track-card-strong, #47627b) 8%, #ffffff);
  color: var(--track-card-ink, #4f6c84);
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.72rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  line-height: 1;
  text-transform: uppercase;
}

.track-level-heading h2 {
  font-size: 1.5rem;
  line-height: 1.2;
  margin: 0;
  color: #17304a;
}

.track-level-heading p {
  margin: 0;
  color: #4b6172;
  max-width: 72ch;
}

.track-level-progress {
  max-width: 760px;
  padding: 11px 12px;
  border-radius: 14px;
  border: 1px solid color-mix(in srgb, var(--track-card-strong, #47627b) 16%, #d9e2e9);
  background: rgba(255, 255, 255, 0.66);
}

.track-level-progress-row,
.track-card-progress-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: "Segoe UI", Arial, sans-serif;
  color: #4b6172;
  font-size: 0.86rem;
  line-height: 1.28;
}

.track-level-progress-row strong,
.track-card-progress-row strong {
  color: var(--track-card-heading, #17304a);
  font-size: 0.74rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
}

.track-level-progress-track,
.track-card-progress-track {
  overflow: hidden;
  height: 7px;
  margin-top: 8px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--track-card-strong, #47627b) 10%, #e7edf2);
}

.track-level-progress-track span,
.track-card-progress-track span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--track-card-strong, #47627b), color-mix(in srgb, var(--track-card-strong, #47627b) 58%, #ffffff));
  transition: width 0.24s ease;
}

.level-lesson-grid {
  position: relative;
  display: grid;
  gap: 14px;
  padding-left: 84px;
}

.level-lesson-grid::before {
  content: "";
  position: absolute;
  left: 24px;
  top: 16px;
  bottom: 16px;
  width: 1px;
  background: rgba(65, 84, 100, 0.14);
}

.track-card {
  position: relative;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 168px;
  gap: 20px;
  align-items: center;
  min-height: 128px;
  padding: 16px 18px 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--tree-outline);
  background:
    linear-gradient(90deg, var(--track-card-accent, rgba(59, 122, 87, 0.24)) 0 8px, transparent 8px),
    linear-gradient(135deg, var(--track-card-bg-start, #ffffff) 0%, var(--track-card-bg-end, #fbfcfd) 100%);
  box-shadow: var(--tree-shadow);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.track-card::before {
  content: "";
  position: absolute;
  left: -56px;
  top: 50%;
  transform: translateY(-50%);
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid rgba(65, 84, 100, 0.3);
  background: rgba(255, 255, 255, 0.95);
}

.track-card.is-next::before {
  background: #f8e4a7;
  border-color: rgba(197, 155, 38, 0.4);
}

.track-card.is-done::before {
  background: #7cb169;
  border-color: rgba(79, 134, 81, 0.4);
}

.track-card.is-progress::before {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(65, 84, 100, 0.3);
}

.level-cta-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 18px;
  align-items: center;
  padding: 20px 22px;
  border: 1px solid rgba(184, 132, 28, 0.34);
  border-top: 0;
  border-left: 8px solid #c78a18;
  border-radius: 20px;
  background:
    linear-gradient(135deg, #fff8e5 0%, #f4ead4 100%);
  box-shadow: 0 18px 34px rgba(145, 94, 14, 0.1);
}

.level-cta-card span,
.level-cta-card a {
  font-family: "Segoe UI", Arial, sans-serif;
}

.level-cta-card span {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 4px 10px;
  margin-bottom: 6px;
  border-radius: 999px;
  background: rgba(151, 97, 14, 0.12);
  color: #83570f;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.level-cta-card h3 {
  margin: 0;
  color: #69440c;
  font-size: 1.34rem;
  line-height: 1.16;
}

.level-cta-card p {
  margin: 8px 0 0;
  max-width: 62ch;
  color: #624d2d;
  line-height: 1.62;
}

.level-cta-card a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 17px;
  border-radius: 12px;
  background: #9a6412;
  color: #ffffff;
  text-decoration: none;
  font-weight: 800;
  white-space: nowrap;
}

.level-cta-card a:hover {
  background: #7c500d;
}

.level-empty-state {
  padding: 24px;
  border: 1px dashed #c5d1dc;
  border-radius: 18px;
  background: #f8fbfd;
  text-align: center;
}

.level-empty-state strong {
  display: block;
  font-family: "Segoe UI", Arial, sans-serif;
  color: #17304a;
}

.level-empty-state p {
  margin: 8px auto 0;
  max-width: 54ch;
  line-height: 1.65;
  color: var(--tree-copy);
}

.future-semester-section {
  display: grid;
  gap: 16px;
  margin-top: 6px;
  padding: 24px;
  border-radius: 24px;
  border: 1px dashed #c8d4df;
  background: linear-gradient(180deg, rgba(250, 252, 253, 0.9) 0%, rgba(239, 244, 248, 0.88) 100%);
}

.future-semester-heading {
  display: grid;
  gap: 8px;
  max-width: 780px;
}

.future-semester-heading span,
.future-semester-card-head,
.future-semester-topics span {
  font-family: "Segoe UI", Arial, sans-serif;
}

.future-semester-heading span {
  color: #607282;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.future-semester-heading h2 {
  margin: 0;
  color: #17304a;
  font-size: 1.45rem;
  line-height: 1.16;
}

.future-semester-heading p {
  margin: 0;
  color: #4b6172;
  line-height: 1.62;
}

.future-semester-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.future-semester-card {
  display: grid;
  gap: 12px;
  padding: 18px;
  border-radius: 18px;
  border: 1px solid #dbe4ec;
  background: #ffffff;
  box-shadow: 0 12px 24px rgba(15, 23, 42, 0.035);
}

.future-semester-card-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.future-semester-card-head span {
  color: #4f6c84;
  font-size: 0.76rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.future-semester-card-head strong {
  padding: 5px 9px;
  border-radius: 999px;
  background: #edf3f8;
  color: #526584;
  font-size: 0.68rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.future-semester-card h3 {
  margin: 0;
  color: #17304a;
  font-size: 1.18rem;
  line-height: 1.18;
}

.future-semester-card p {
  margin: 0;
  color: #4b6172;
  line-height: 1.55;
}

.future-semester-topics {
  display: grid;
  gap: 8px;
  padding-top: 10px;
  border-top: 1px solid rgba(113, 129, 147, 0.16);
}

.future-semester-topics span {
  color: #607282;
  font-size: 0.72rem;
  font-weight: 900;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.future-semester-topics ul {
  display: grid;
  gap: 5px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.future-semester-topics li {
  color: #29445c;
  font-size: 0.92rem;
  line-height: 1.38;
}

.track-card {
  position: relative;
  display: grid;
  grid-template-columns: 88px minmax(0, 1fr) 168px;
  gap: 20px;
  align-items: center;
  min-height: 128px;
  padding: 16px 18px;
  border-radius: 18px;
  border: 1px solid var(--tree-outline);
  background:
    linear-gradient(90deg, var(--track-card-accent, rgba(59, 122, 87, 0.24)) 0 8px, transparent 8px),
    linear-gradient(135deg, var(--track-card-bg-start, #ffffff) 0%, var(--track-card-bg-end, #fbfcfd) 100%);
  box-shadow: var(--tree-shadow);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.track-card:hover {
  transform: translateY(-2px);
  border-color: #b8c7d3;
  box-shadow: 0 18px 34px rgba(15, 23, 42, 0.08);
}

.track-card-media {
  width: 88px;
  height: 88px;
  overflow: hidden;
  display: grid;
  place-items: center;
  border-radius: 14px;
  border: 1px solid #d8e1e8;
  background: #ffffff;
}

.track-card-placeholder {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #ffffff;
  color: #35546f;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 1.2rem;
  font-weight: 800;
  border: 1px solid #d8e1e8;
}

.track-card-icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  opacity: 1;
  transform: scale(1.22);
  transform-origin: center;
}

.track-card.track-theme-foundation .track-card-icon,
.track-card.track-theme-level-one .track-card-icon {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 1;
  transform: scale(1.22);
  transform-origin: center;
}

.track-card-icon-full-bleed {
  object-fit: cover;
  transform: scale(1.62);
}

.track-card-media-fill {
  border: 0;
  background: transparent;
}

.track-card-icon-fill-box {
  width: calc(100% + 2px);
  height: calc(100% + 2px);
  object-fit: cover;
  transform: scale(4.15);
  transform-origin: center;
}

.track-card-body {
  min-width: 0;
}

.track-card-topline {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 8px;
}

.track-card-kicker,
.track-card-type,
.track-card-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 24px;
  padding: 5px 10px;
  border-radius: 999px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.track-card-kicker {
  background: rgba(255, 255, 255, 0.72);
  color: var(--track-card-ink, #5f7284);
  border: 1px solid rgba(255, 255, 255, 0.76);
}

.track-card-status {
  background: rgba(255, 255, 255, 0.78);
  color: var(--track-card-ink, #35546f);
  border: 1px solid rgba(255, 255, 255, 0.76);
}

.track-card-type {
  background: var(--track-card-strong, #17304a);
  color: #ffffff;
}

.track-card.is-done .track-card-status {
  background: #e9f5ee;
  color: #366447;
}

.track-card.is-next .track-card-status {
  background: #fff3d8;
  color: #8a5a12;
}

.track-card.is-next {
  border-color: color-mix(in srgb, var(--track-card-strong, #47627b) 34%, #d8e1e8);
  box-shadow:
    0 0 0 4px color-mix(in srgb, var(--track-card-strong, #47627b) 9%, transparent),
    0 18px 34px rgba(15, 23, 42, 0.08);
}

.track-card.is-locked .track-card-status {
  background: #eef1f4;
  color: #6f7f8d;
}

.track-card.is-locked {
  --track-card-bg-start: #f4f6f8;
  --track-card-bg-end: #e8edf1;
  --track-card-accent: rgba(113, 129, 147, 0.18);
  --track-card-media-bg: #e2e8ee;
  --track-card-ink: #758393;
  --track-card-heading: #637282;
  --track-card-strong: #7b8794;
  --track-card-button-shadow: rgba(100, 116, 139, 0);
  border-top-color: #b9c4cf;
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.035);
  filter: grayscale(0.26);
}

.track-card.is-locked:hover {
  transform: none;
  border-color: var(--tree-outline);
  box-shadow: 0 10px 22px rgba(15, 23, 42, 0.035);
}

.track-card.is-locked::before {
  background: #d9e0e7;
  border-color: #b7c3cf;
}

.track-card.is-locked .track-card-icon,
.track-card.is-locked .track-card-placeholder {
  opacity: 0.58;
  filter: grayscale(1);
}

.track-card.is-locked .track-card-desc,
.track-card.is-locked .track-card-meta {
  color: #6f7f8d;
}

.track-card h2 {
  margin: 0;
  color: var(--track-card-heading, #17304a);
  font-size: 1.42rem;
  line-height: 1.12;
  letter-spacing: -0.03em;
}

.track-card-desc {
  margin: 8px 0 0;
  max-width: 76ch;
  color: #29445c;
  line-height: 1.5;
}

.track-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  margin-top: 10px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.92rem;
  color: #607282;
}

.track-card-progress {
  margin-top: 12px;
  padding: 9px 10px;
  border-radius: 13px;
  border: 1px solid color-mix(in srgb, var(--track-card-strong, #47627b) 15%, #dbe3ea);
  background: rgba(255, 255, 255, 0.62);
}

.track-card-action {
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.track-card-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 150px;
  min-height: 46px;
  padding: 11px 18px;
  border-radius: 12px;
  background: var(--track-card-strong, #17304a);
  color: #ffffff;
  text-decoration: none;
  font-family: "Segoe UI", Arial, sans-serif;
  font-weight: 800;
  box-shadow: 0 10px 18px var(--track-card-button-shadow, rgba(23, 48, 74, 0.16));
}

.track-card-link:hover {
  background: #10263a;
}

.track-card-link-disabled {
  background: #9aa6b2;
  color: #f8fafc;
  cursor: not-allowed;
  box-shadow: none;
}

.track-card-link-disabled:hover {
  background: #9aa6b2;
}

.track-theme-foundation {
  --track-card-bg-start: #f3fbf6;
  --track-card-bg-end: #eaf5ee;
  --track-card-accent: rgba(59, 122, 87, 0.38);
  --track-card-media-bg: #dceee4;
  --track-card-ink: #2f6347;
  --track-card-heading: #173f2c;
  --track-card-strong: #2f6d4a;
  --track-card-button-shadow: rgba(47, 109, 74, 0.18);
  border-top: 4px solid #3b7a57;
}

.track-theme-level-one {
  --track-card-bg-start: #fffbed;
  --track-card-bg-end: #f7edcf;
  --track-card-accent: rgba(198, 148, 45, 0.34);
  --track-card-media-bg: #f2e4bd;
  --track-card-ink: #7b5a1f;
  --track-card-heading: #5d4215;
  --track-card-strong: #9b6b20;
  --track-card-button-shadow: rgba(155, 107, 32, 0.18);
  border-top: 4px solid #c6942d;
}

.track-theme-depreciation {
  --track-card-bg-start: #fbf6f3;
  --track-card-bg-end: #f1e6df;
  --track-card-accent: rgba(123, 75, 58, 0.34);
  --track-card-media-bg: #ead8cf;
  --track-card-ink: #744b3d;
  --track-card-heading: #563427;
  --track-card-strong: #7b4b3a;
  --track-card-button-shadow: rgba(123, 75, 58, 0.18);
  border-top: 4px solid #7b4b3a;
}

.track-theme-closing {
  --track-card-bg-start: #fff8ed;
  --track-card-bg-end: #f4ead9;
  --track-card-accent: rgba(181, 121, 54, 0.38);
  --track-card-media-bg: #f0dec0;
  --track-card-ink: #835c25;
  --track-card-heading: #5c3f17;
  --track-card-strong: #986626;
  --track-card-button-shadow: rgba(152, 102, 38, 0.18);
  border-top: 4px solid #b57936;
}

.track-theme-tax {
  --track-card-bg-start: #effafa;
  --track-card-bg-end: #e1f0f1;
  --track-card-accent: rgba(47, 122, 131, 0.36);
  --track-card-media-bg: #d4ebed;
  --track-card-ink: #2c6972;
  --track-card-heading: #164951;
  --track-card-strong: #2f7a83;
  --track-card-button-shadow: rgba(47, 122, 131, 0.18);
  border-top: 4px solid #2f7a83;
}

.track-theme-transfer {
  --track-card-bg-start: #f6f3fb;
  --track-card-bg-end: #ebe6f5;
  --track-card-accent: rgba(107, 91, 149, 0.34);
  --track-card-media-bg: #ddd5ef;
  --track-card-ink: #5e5184;
  --track-card-heading: #443667;
  --track-card-strong: #6b5b95;
  --track-card-button-shadow: rgba(107, 91, 149, 0.18);
  border-top: 4px solid #6b5b95;
}

.track-theme-inventory {
  --track-card-bg-start: #f4f8ef;
  --track-card-bg-end: #e8f0dd;
  --track-card-accent: rgba(94, 121, 53, 0.34);
  --track-card-media-bg: #dce8c9;
  --track-card-ink: #5d7136;
  --track-card-heading: #3f5223;
  --track-card-strong: #667d38;
  --track-card-button-shadow: rgba(102, 125, 56, 0.18);
  border-top: 4px solid #667d38;
}

.track-theme-income-tax {
  --track-card-bg-start: #f3f6fb;
  --track-card-bg-end: #e5ebf5;
  --track-card-accent: rgba(74, 93, 128, 0.34);
  --track-card-media-bg: #d9e2f0;
  --track-card-ink: #526584;
  --track-card-heading: #344865;
  --track-card-strong: #526584;
  --track-card-button-shadow: rgba(82, 101, 132, 0.18);
  border-top: 4px solid #526584;
}

.track-theme-foundation .level-tile-progress span,
.level-tile.track-theme-foundation .level-tile-progress span {
  background: #3b7a57;
}

.track-theme-level-one .level-tile-progress span,
.level-tile.track-theme-level-one .level-tile-progress span {
  background: #c6942d;
}

.track-theme-tax .level-tile-progress span,
.level-tile.track-theme-tax .level-tile-progress span {
  background: #2f7a83;
}

.track-theme-closing .level-tile-progress span,
.level-tile.track-theme-closing .level-tile-progress span {
  background: #b57936;
}

.track-theme-transfer .level-tile-progress span,
.level-tile.track-theme-transfer .level-tile-progress span {
  background: #6b5b95;
}

.track-theme-inventory .level-tile-progress span,
.level-tile.track-theme-inventory .level-tile-progress span {
  background: #667d38;
}

.track-theme-income-tax .level-tile-progress span,
.level-tile.track-theme-income-tax .level-tile-progress span {
  background: #526584;
}

.track-back-row {
  margin: 0 auto 18px;
  max-width: 1180px;
}

.track-back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-weight: 700;
  color: #24445d;
  text-decoration: none;
}

.track-back-link:hover {
  color: #17304a;
}

.track-empty-state {
  text-align: center;
  padding: 36px 24px;
}

.chapter-heading {
  max-width: 540px;
  margin: 0 auto 18px;
  text-align: left;
}

.chapter-heading-center {
  text-align: center;
}

.chapter-label {
  display: inline-block;
  margin-bottom: 8px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: #718497;
}

.chapter-heading h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2vw, 2rem);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.path-column {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
}

.chapter-grid {
  display: grid;
  gap: 26px;
  margin-top: 6px;
}

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

.chapter-column {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.chapter-column .chapter-heading {
  width: 100%;
  min-height: 86px;
  margin-bottom: 10px;
}

.techtree-branch {
  display: grid;
  gap: 24px;
  justify-content: center;
  align-items: start;
}

.techtree-branch-3 {
  grid-template-columns: repeat(3, minmax(250px, 1fr));
}

.techtree-branch-2 {
  grid-template-columns: repeat(2, minmax(250px, 1fr));
}

.tree-node {
  width: min(100%, 320px);
  position: relative;
  background: linear-gradient(180deg, #ffffff 0%, #fbfcfd 100%);
  border: 1px solid var(--tree-outline);
  border-top: 4px solid var(--node-accent, #47627b);
  border-radius: 22px;
  padding: 18px 18px 20px;
  box-shadow: var(--tree-shadow);
  transition: transform 0.18s ease, border-color 0.18s ease, box-shadow 0.18s ease;
}

.tree-node-wide {
  width: min(100%, 430px);
}

.tree-node:not(.locked) {
  cursor: pointer;
}

.tree-node:not(.locked):hover {
  transform: translateY(-3px);
  border-color: #b9c7d3;
  box-shadow: 0 18px 34px rgba(16, 24, 40, 0.08);
}

.tree-node.current {
  box-shadow:
    0 0 0 4px rgba(59, 122, 87, 0.12),
    0 16px 32px rgba(16, 24, 40, 0.08);
}

.tree-node.done {
  background: linear-gradient(180deg, #ffffff 0%, #f9fcfa 100%);
}

.tree-node.locked {
  background: linear-gradient(180deg, #f8fafb 0%, #f3f6f8 100%);
}

.tree-node.planned {
  background: linear-gradient(180deg, #fafbfc 0%, #f5f7f9 100%);
  border-style: dashed;
  box-shadow: none;
  cursor: default;
}

.tree-node.locked .node-content,
.tree-node.locked .node-status {
  opacity: 0.72;
}

.tree-node.planned .node-content,
.tree-node.planned .node-status {
  opacity: 0.78;
}

.node-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  padding: 6px 10px;
  border-radius: 999px;
  background: #edf2f7;
  color: #5f7284;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.tree-node.done .node-status {
  background: #e9f5ee;
  color: #366447;
}

.tree-node.unlocked .node-status {
  background: #edf4fb;
  color: #35546f;
}

.tree-node.planned .node-status {
  background: #f0f2f4;
  color: #6a7a88;
}

.node-content {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.node-content img {
  width: 46px;
  height: 46px;
  object-fit: contain;
  flex-shrink: 0;
  margin-top: 2px;
}

.node-text {
  min-width: 0;
}

.node-chapter {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #7a8c9a;
}

.node-text h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

.node-text p {
  margin: 8px 0 0;
  font-size: 0.97rem;
  line-height: 1.65;
  color: var(--tree-copy);
}

.tree-line {
  width: 3px;
  height: 58px;
  margin: 0 auto;
  background:
    repeating-linear-gradient(
      to bottom,
      var(--tree-line) 0 9px,
      transparent 9px 16px
    );
}

.tree-line-short {
  height: 34px;
}

.tree-line-strong {
  height: 72px;
  background:
    repeating-linear-gradient(
      to bottom,
      var(--tree-line-strong) 0 10px,
      transparent 10px 17px
    );
}

.techtree-fork {
  position: relative;
  margin: 2px auto 10px;
  height: 38px;
}

.techtree-fork-wide {
  width: min(100%, 760px);
}

.techtree-fork-medium {
  width: min(100%, 680px);
}

.techtree-fork::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 0;
  height: 3px;
  background:
    repeating-linear-gradient(
      to right,
      var(--tree-line-strong) 0 12px,
      transparent 12px 19px
    );
}

.fork-line {
  position: absolute;
  top: 0;
  width: 3px;
  height: 38px;
  background:
    repeating-linear-gradient(
      to bottom,
      var(--tree-line-strong) 0 10px,
      transparent 10px 17px
    );
}

.fork-line.left { left: 0; }
.fork-line.center { left: 50%; transform: translateX(-50%); }
.fork-line.right { right: 0; }

@keyframes unlockReveal {
  0% {
    opacity: 0;
    transform: translateY(14px) scale(0.97);
  }

  100% {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.tree-node.unlocking {
  animation: unlockReveal 0.75s ease-out forwards;
}

@media (max-width: 1100px) {
  .curriculum-logic-card,
  .curriculum-semester-grid,
  .future-semester-grid {
    grid-template-columns: 1fr;
  }

  .track-overview-wrap {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 72px;
    gap: 14px;
    align-items: start;
    max-width: 100%;
  }

  .track-info-button {
    position: relative;
    top: 0;
    left: 0;
    order: 2;
  }

  .track-overview-stage {
    order: 1;
  }

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

  .chapter-grid-3,
  .techtree-branch-2,
  .techtree-branch-3 {
    grid-template-columns: 1fr;
  }

  .track-card {
    grid-template-columns: 92px minmax(0, 1fr);
  }

  .track-card-media {
    width: 92px;
    height: 92px;
  }

  .track-card-action {
    grid-column: 1 / -1;
    justify-content: flex-start;
  }

  .chapter-column .chapter-heading {
    min-height: auto;
    text-align: center;
  }

  .tree-node,
  .tree-node-wide {
    width: min(100%, 540px);
  }

  .techtree-fork-wide,
  .techtree-fork-medium {
    width: min(100%, 540px);
  }
}

@media (max-width: 720px) {
  .curriculum-entry {
    grid-template-columns: 1fr auto;
  }

  .curriculum-entry {
    grid-template-columns: 1fr;
  }

  .curriculum-open-button {
    justify-self: start;
  }

  .curriculum-modal {
    padding: 12px;
    place-items: stretch;
  }

  .curriculum-modal-panel {
    max-height: 92vh;
    padding: 20px 16px;
    border-radius: 20px;
  }

  .curriculum-modal-close {
    margin-bottom: -46px;
  }

  .curriculum-flow {
    grid-template-columns: 1fr;
  }

  .curriculum-flow span:not(:last-child)::after {
    content: "↓";
    right: auto;
    top: auto;
    bottom: -14px;
    left: 50%;
    transform: translateX(-50%);
  }

  .curriculum-semester-head,
  .curriculum-progress-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .techtree-shell {
    padding: 18px 16px 56px;
  }

  .techtree-intro {
    margin-bottom: 16px;
  }

  .techtree-kicker {
    margin-bottom: 8px;
  }

  .techtree-intro h1 {
    font-size: clamp(2rem, 9vw, 2.6rem);
  }

  .track-overview-wrap {
    grid-template-columns: 1fr;
  }

  .track-info-button {
    justify-self: end;
    order: 1;
    width: 58px;
    height: 58px;
    font-size: 2.35rem;
  }

  .track-info-tooltip {
    right: 0;
  }

  .track-overview-stage {
    order: 2;
  }

  .track-overview-stage,
  .techtree-stage {
    padding: 24px 18px 32px;
    border-radius: 22px;
  }

  .level-menu {
    grid-template-columns: 1fr;
    gap: 10px;
    padding-top: 8px;
    padding-bottom: 0;
  }

  .level-menu::after {
    display: none;
  }

  .level-tile {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr;
    height: 54px;
    min-height: 0;
    align-items: center;
    transform: translateY(0);
  }

  .level-tile:hover {
    transform: translateY(0);
  }

  .level-tile.is-active {
    grid-template-columns: 64px minmax(0, 1fr);
    grid-template-rows: auto 7px;
    gap: 12px;
    height: auto;
    min-height: 112px;
    transform: translateY(0);
  }

  .level-tile-icon {
    width: 64px;
    height: 64px;
    grid-row: 1 / 3;
  }

  .level-tile.is-active .level-tile-copy {
    grid-column: 2;
  }

  .level-tile.is-active .level-tile-progress {
    grid-column: 1 / -1;
  }

  .level-tile-icon img {
    width: 40px;
    height: 40px;
  }

  .level-cta-card {
    grid-template-columns: 1fr;
  }

  .level-cta-card a {
    justify-self: start;
  }

  .track-card {
    grid-template-columns: 72px minmax(0, 1fr);
    gap: 14px;
    padding: 16px;
    border-radius: 18px;
  }

  .track-card-media {
    width: 72px;
    height: 72px;
    border-radius: 14px;
  }

  .track-card-topline {
    flex-direction: column;
    align-items: flex-start;
  }

  .track-level-heading-top,
  .track-level-progress-row,
  .track-card-progress-row {
    align-items: flex-start;
    flex-direction: column;
    gap: 6px;
  }

  .track-card h2 {
    font-size: 1.28rem;
  }

  .tree-node {
    padding: 16px 16px 18px;
    border-radius: 18px;
  }

  .node-content img {
    width: 40px;
    height: 40px;
  }
}

/* ===== KNOWLEDGE SECTION ===== */

.level-knowledge-section {
  display: grid;
  grid-template-columns: minmax(0, 760px) minmax(92px, 124px);
  gap: 22px;
  align-items: start;
  margin-top: 2px;
  margin-left: 84px;
  padding: 18px 0 0;
  border-top: 1px solid rgba(59, 122, 87, 0.12);
}

.knowledge-section-title {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 6px;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.78rem;
  font-weight: 850;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #2f6347;
}

.knowledge-section-title::before {
  content: "";
  width: 24px;
  height: 1px;
  background: rgba(59, 122, 87, 0.42);
}

.knowledge-section-desc {
  display: block;
  margin: 0 0 12px;
  color: #4b6172;
  font-size: 0.85rem;
  line-height: 1.5;
}

.knowledge-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  max-width: 760px;
}

.knowledge-mascot {
  align-self: end;
  justify-self: end;
  margin: 0 18px 0 0;
  width: min(172px, 100%);
  height: 92px;
  pointer-events: none;
}

.knowledge-mascot img {
  display: block;
  width: auto;
  height: 100%;
  object-fit: contain;
  object-position: right bottom;
  filter: drop-shadow(0 16px 18px rgba(47, 109, 74, 0.12));
}

.knowledge-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 12px;
  align-items: center;
  min-height: 72px;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1px solid rgba(59, 122, 87, 0.24);
  background: rgba(243, 251, 246, 0.52);
  text-decoration: none;
  color: #173f2c;
  transition: border-color 0.18s ease, background 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  text-align: left;
  box-shadow: none;
}

.knowledge-card:hover {
  transform: translateY(-1px);
  box-shadow: 0 8px 18px rgba(47, 109, 74, 0.08);
  border-color: rgba(47, 109, 74, 0.44);
  background: #f3fbf6;
}

.knowledge-card > div {
  display: flex;
  flex-direction: column;
  gap: 3px;
  width: 100%;
  min-width: 0;
}

.knowledge-tag {
  display: inline-flex;
  width: fit-content;
  font-family: "Segoe UI", Arial, sans-serif;
  font-size: 0.64rem;
  font-weight: 850;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: #4f7a61;
}

.knowledge-card h3 {
  margin: 0;
  font-size: 0.92rem;
  font-weight: 700;
  color: #173f2c;
  line-height: 1.22;
}

.knowledge-card p {
  margin: 0;
  font-size: 0.78rem;
  line-height: 1.35;
  color: rgba(47, 99, 71, 0.78);
}

.knowledge-card .track-card-link-arrow {
  display: grid;
  place-items: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(59, 122, 87, 0.1);
  color: #2f6d4a;
  font-family: "Segoe UI", Arial, sans-serif;
  font-weight: 800;
  transition: background 0.18s ease, transform 0.18s ease;
}

.knowledge-card:hover .track-card-link-arrow {
  background: rgba(59, 122, 87, 0.16);
  transform: translateX(2px);
}

@media (max-width: 900px) {
  .level-knowledge-section {
    grid-template-columns: 1fr;
  }

  .knowledge-grid {
    grid-template-columns: 1fr;
    max-width: 560px;
  }

  .knowledge-mascot {
    display: none;
  }
}

@media (max-width: 720px) {
  .level-knowledge-section {
    margin-left: 0;
  }

  .knowledge-card {
    min-height: 68px;
  }
}