.learning-body {
  background:
    linear-gradient(180deg, rgba(17, 99, 92, 0.045), transparent 520px),
    var(--page);
}

.learning-main {
  max-width: 1540px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 64px) 72px;
}

.learning-breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  align-items: center;
  padding: 22px 0 10px;
  color: var(--muted);
  font-size: 0.88rem;
  font-weight: 750;
}

.learning-breadcrumb a {
  text-decoration: none;
}

.learning-breadcrumb a:hover {
  color: var(--teal);
}

.learning-breadcrumb > span:not([aria-current]) {
  color: var(--line);
}

.learning-hero {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(440px, 1.14fr);
  gap: clamp(32px, 6vw, 88px);
  align-items: center;
  min-height: 700px;
  padding: clamp(42px, 6vw, 88px) 0;
}

.learning-hero-copy {
  max-width: 720px;
}

.learning-hero h1,
.learning-module-hero h1,
.learning-page-hero h1 {
  max-width: 13ch;
  margin-bottom: 24px;
  font-size: clamp(3.2rem, 7vw, 7.8rem);
  line-height: 0.94;
  letter-spacing: -0.068em;
}

.learning-hero-copy > p:not(.eyebrow, .lede) {
  max-width: 64ch;
  color: var(--muted);
  font-size: 1.04rem;
}

.learning-hero-board {
  position: relative;
  min-height: 560px;
  padding: clamp(28px, 4vw, 54px);
  overflow: hidden;
  border: 1px solid var(--ink);
  background:
    radial-gradient(circle at 80% 10%, rgba(223, 163, 61, 0.2), transparent 26%),
    linear-gradient(145deg, #0b3f3b, #11635c 54%, #0b4944);
  color: #fff;
  box-shadow: 22px 24px 0 rgba(17, 99, 92, 0.12);
}

.learning-hero-board::after {
  position: absolute;
  right: -72px;
  bottom: -72px;
  width: 260px;
  height: 260px;
  border: 46px solid rgba(255, 255, 255, 0.065);
  border-radius: 50%;
  content: "";
}

.learning-board-header {
  display: flex;
  gap: 14px;
  align-items: center;
  padding-bottom: 28px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.25);
}

.learning-board-header .brand-mark {
  border-color: #fff;
  background: #fff;
  color: var(--teal);
}

.learning-board-header div {
  display: grid;
  gap: 4px;
}

.learning-board-header strong {
  font-size: 0.86rem;
  letter-spacing: 0.1em;
}

.learning-board-header span {
  color: rgba(255, 255, 255, 0.72);
  font-size: 0.77rem;
}

.learning-board-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin: 52px 0 36px;
}

.learning-board-grid article {
  min-height: 150px;
  padding: 20px;
  border: 1px solid rgba(255, 255, 255, 0.23);
  background: rgba(255, 255, 255, 0.09);
  backdrop-filter: blur(8px);
}

.learning-board-grid article:nth-child(2),
.learning-board-grid article:nth-child(3) {
  background: rgba(223, 163, 61, 0.16);
}

.learning-board-grid span {
  display: block;
  margin-bottom: 28px;
  color: #ffd791;
  font-size: 0.76rem;
  font-weight: 900;
}

.learning-board-grid strong {
  display: block;
  margin-bottom: 6px;
  font-size: 1.18rem;
}

.learning-board-grid p,
.learning-board-note {
  margin: 0;
  color: rgba(255, 255, 255, 0.75);
  font-size: 0.88rem;
}

.learning-board-note {
  position: relative;
  z-index: 1;
  font-weight: 750;
}

.learning-stats {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border: 1px solid var(--line);
  background: var(--surface);
}

.learning-stats div {
  min-height: 165px;
  padding: 24px;
  border-right: 1px solid var(--line);
}

.learning-stats div:last-child {
  border-right: 0;
}

.learning-stats strong {
  display: block;
  margin: 18px 0 8px;
  font-size: clamp(1.25rem, 2.2vw, 2rem);
}

.learning-stats p {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.learning-section {
  margin-top: clamp(70px, 9vw, 126px);
}

.learning-section-heading {
  max-width: 830px;
  margin-bottom: 34px;
}

.learning-section-heading h2,
.learning-safety h2,
.learning-source-note h2,
.learning-route-advice h2 {
  max-width: 18ch;
  font-size: clamp(2.1rem, 4vw, 4.35rem);
  line-height: 0.98;
  letter-spacing: -0.045em;
}

.learning-section-heading > p:last-child {
  max-width: 72ch;
  color: var(--muted);
  font-size: 1.03rem;
}

.learning-heading-row {
  display: flex;
  max-width: none;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
}

.learning-heading-row .text-link {
  min-width: max-content;
}

.learning-principle-grid,
.learning-track-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 16px;
}

.learning-principle-grid article,
.learning-track-grid article {
  min-height: 270px;
  padding: 26px;
  border: 1px solid var(--line);
  background: var(--surface);
}

.learning-principle-grid span,
.learning-track-number {
  display: block;
  margin-bottom: 48px;
  color: var(--teal);
  font-size: 0.74rem;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.learning-principle-grid h3,
.learning-track-grid h3 {
  margin-bottom: 12px;
  font-size: 1.28rem;
}

.learning-principle-grid p,
.learning-track-grid p {
  color: var(--muted);
  font-size: 0.92rem;
}

.learning-track-grid article {
  display: flex;
  min-height: 330px;
  flex-direction: column;
}

.learning-track-grid article:nth-child(2) {
  border-top: 5px solid var(--amber);
}

.learning-track-grid article:nth-child(3) {
  border-top: 5px solid var(--clay);
}

.learning-track-grid strong {
  margin-top: auto;
  color: var(--teal);
  font-size: 0.84rem;
}

.learning-module-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}

.learning-module-card {
  display: flex;
  min-height: 350px;
  flex-direction: column;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
  transition: transform 150ms ease, box-shadow 150ms ease, border-color 150ms ease;
}

.learning-module-card:hover {
  transform: translateY(-4px);
  border-color: var(--teal);
  box-shadow: 12px 14px 0 rgba(17, 99, 92, 0.1);
}

.learning-module-meta,
.learning-module-footer,
.learning-module-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: space-between;
}

.learning-module-meta {
  margin-bottom: 48px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.learning-module-card h3 {
  max-width: 19ch;
  margin-bottom: 14px;
  font-size: clamp(1.45rem, 2.2vw, 2rem);
  line-height: 1.03;
}

.learning-module-card > p {
  color: var(--muted);
  font-size: 0.93rem;
}

.learning-module-footer {
  margin-top: auto;
  padding-top: 28px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.78rem;
}

.learning-module-footer strong {
  color: var(--teal);
}

.learning-safety {
  display: grid;
  grid-template-columns: minmax(280px, 0.7fr) minmax(0, 1.3fr);
  gap: clamp(28px, 6vw, 90px);
  padding: clamp(32px, 5vw, 64px);
  border: 1px solid var(--ink);
  background: var(--ink);
  color: var(--page);
}

.learning-safety > div > p:last-child {
  color: rgba(247, 245, 239, 0.68);
}

.learning-safety ol {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: safety;
}

.learning-safety li {
  position: relative;
  padding: 20px 0 20px 58px;
  border-bottom: 1px solid rgba(247, 245, 239, 0.18);
  counter-increment: safety;
}

.learning-safety li::before {
  position: absolute;
  top: 18px;
  left: 0;
  color: #ffd791;
  content: "0" counter(safety);
  font-size: 0.75rem;
  font-weight: 900;
}

.learning-source-note,
.learning-route-advice {
  display: grid;
  grid-template-columns: minmax(280px, 0.75fr) minmax(0, 1fr) auto;
  gap: 32px;
  align-items: end;
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.learning-source-note p,
.learning-route-advice > p {
  color: var(--muted);
}

.learning-page-hero {
  max-width: 1080px;
  padding: clamp(62px, 9vw, 140px) 0 clamp(50px, 7vw, 100px);
}

.learning-page-hero h1 {
  max-width: 14ch;
}

.learning-page-hero .lede {
  max-width: 70ch;
}

.learning-paths {
  display: grid;
  gap: 28px;
}

.learning-path {
  display: grid;
  grid-template-columns: minmax(300px, 0.7fr) minmax(0, 1.3fr);
  gap: 46px;
  padding: clamp(26px, 4vw, 52px);
  border: 1px solid var(--line);
  background: var(--surface);
}

.learning-path-intro {
  display: flex;
  gap: 22px;
}

.learning-path-intro > span {
  color: var(--teal);
  font-size: 0.8rem;
  font-weight: 900;
}

.learning-path-intro h2 {
  max-width: 12ch;
  font-size: clamp(2rem, 3.5vw, 3.6rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.learning-path-intro p:last-child {
  color: var(--muted);
}

.learning-path-modules {
  display: grid;
}

.learning-path-modules a {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) auto;
  gap: 16px;
  align-items: center;
  padding: 19px 0;
  border-bottom: 1px solid var(--line);
  text-decoration: none;
}

.learning-path-modules a:hover strong {
  color: var(--teal);
}

.learning-path-modules a > span {
  color: var(--teal);
  font-size: 0.75rem;
  font-weight: 900;
}

.learning-path-modules p {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.84rem;
}

.learning-path-modules small {
  color: var(--muted);
  font-weight: 700;
}

.learning-module-hero {
  display: grid;
  grid-template-columns: minmax(0, 1.25fr) minmax(320px, 0.75fr);
  gap: clamp(36px, 7vw, 110px);
  align-items: end;
  padding: clamp(55px, 8vw, 126px) 0 74px;
  border-bottom: 1px solid var(--line);
}

.learning-module-hero h1 {
  max-width: 15ch;
  font-size: clamp(3rem, 6.6vw, 7rem);
}

.learning-module-hero .lede {
  max-width: 68ch;
}

.learning-module-badges {
  justify-content: flex-start;
  margin-top: 28px;
}

.learning-module-badges span {
  padding: 8px 11px;
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--muted);
  font-size: 0.76rem;
  font-weight: 800;
}

.learning-objectives {
  padding: 30px;
  border: 1px solid var(--ink);
  background: var(--surface);
  box-shadow: 12px 14px 0 rgba(17, 99, 92, 0.1);
}

.learning-objectives h2 {
  margin: 12px 0 22px;
  font-size: 1.65rem;
}

.learning-objectives ul {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-objectives li {
  position: relative;
  padding-left: 26px;
  color: var(--muted);
  font-size: 0.92rem;
}

.learning-objectives li::before {
  position: absolute;
  top: 0.2em;
  left: 0;
  width: 10px;
  height: 10px;
  border: 2px solid var(--teal);
  content: "";
}

.learning-module-layout {
  display: grid;
  grid-template-columns: 250px minmax(0, 900px);
  gap: clamp(44px, 8vw, 120px);
  justify-content: center;
  padding-top: 72px;
}

.learning-module-toc {
  position: sticky;
  top: 104px;
  display: grid;
  align-self: start;
  border-top: 1px solid var(--line);
}

.learning-module-toc > span {
  padding: 18px 0 12px;
}

.learning-module-toc a {
  display: grid;
  grid-template-columns: 38px 1fr;
  gap: 8px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
  font-size: 0.77rem;
  font-weight: 750;
  text-decoration: none;
}

.learning-module-toc a:hover {
  color: var(--teal);
}

.learning-module-toc a span {
  color: var(--teal);
  font-weight: 900;
}

.learning-lesson {
  display: grid;
  gap: 78px;
}

.learning-lesson-section {
  display: grid;
  grid-template-columns: 54px minmax(0, 1fr);
  gap: 22px;
  scroll-margin-top: 112px;
}

.learning-section-number {
  color: var(--teal);
  font-size: 0.78rem;
  font-weight: 900;
}

.learning-lesson-section h2 {
  max-width: 22ch;
  margin-bottom: 24px;
  font-size: clamp(2rem, 3.5vw, 3.55rem);
  line-height: 1.01;
  letter-spacing: -0.04em;
}

.learning-lesson-section p {
  max-width: 75ch;
  color: #343c3a;
  font-size: 1.02rem;
  line-height: 1.73;
}

.learning-points {
  display: grid;
  gap: 0;
  max-width: 780px;
  margin: 28px 0 0;
  padding: 0;
  border-top: 1px solid var(--line);
  list-style: none;
}

.learning-points li {
  position: relative;
  padding: 14px 12px 14px 30px;
  border-bottom: 1px solid var(--line);
  color: var(--muted);
}

.learning-points li::before {
  position: absolute;
  top: 19px;
  left: 6px;
  width: 8px;
  height: 8px;
  background: var(--teal);
  content: "";
}

.learning-callout {
  margin: 34px 0 0;
  padding: 24px 28px;
  border: 0;
  border-left: 5px solid var(--amber);
  background: var(--surface-warm);
  font-size: 1.15rem;
  font-weight: 800;
  line-height: 1.45;
}

.learning-code {
  margin-top: 30px;
  overflow: hidden;
  border: 1px solid #0b3f3b;
  background: #102322;
  color: #f7f5ef;
}

.learning-code > span {
  display: block;
  padding: 10px 16px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.15);
  color: #a8d7d1;
  font-size: 0.72rem;
  font-weight: 850;
  text-transform: uppercase;
}

.learning-code pre {
  margin: 0;
  padding: 20px;
  overflow-x: auto;
}

.learning-code code {
  font-size: 0.88rem;
  line-height: 1.65;
}

.learning-lab {
  scroll-margin-top: 112px;
  border: 1px solid var(--ink);
  background: var(--surface);
}

.learning-lab-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr);
  gap: 34px;
  align-items: end;
  padding: clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--ink);
}

.learning-lab-header h2 {
  max-width: 17ch;
  font-size: clamp(2rem, 4vw, 4rem);
  line-height: 1;
  letter-spacing: -0.045em;
}

.learning-lab-header > p {
  padding: 18px;
  background: var(--surface-warm);
  color: var(--muted);
}

.learning-lab-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
}

.learning-lab-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-lab-steps li {
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 14px;
  padding: 24px 32px;
  border-bottom: 1px solid var(--line);
}

.learning-lab-steps li:last-child {
  border-bottom: 0;
}

.learning-lab-steps span {
  color: var(--teal);
  font-size: 0.76rem;
  font-weight: 900;
}

.learning-lab-steps p {
  margin: 0;
}

.learning-lab-grid aside {
  padding: 32px;
  border-left: 1px solid var(--ink);
  background: #0b3f3b;
  color: #fff;
}

.learning-lab-grid aside .label {
  color: #ffd791;
}

.learning-lab-grid aside ul {
  display: grid;
  gap: 16px;
  margin: 26px 0 0;
  padding-left: 20px;
  color: rgba(255, 255, 255, 0.8);
}

.learning-checkpoint {
  display: grid;
  grid-template-columns: minmax(260px, 0.6fr) minmax(0, 1.4fr);
  gap: 42px;
  padding: clamp(30px, 4vw, 52px);
  background: var(--surface-warm);
}

.learning-checkpoint h2 {
  font-size: clamp(2rem, 3.4vw, 3.4rem);
}

.learning-checkpoint ul {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-checkpoint li {
  position: relative;
  padding: 16px 18px 16px 52px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-weight: 700;
}

.learning-checkpoint li::before {
  position: absolute;
  top: 14px;
  left: 17px;
  width: 16px;
  height: 16px;
  border: 2px solid var(--teal);
  content: "";
}

.learning-sources {
  scroll-margin-top: 112px;
}

.learning-sources > ul,
.learning-resource-group > ul {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.learning-sources li a,
.learning-resource-group li a {
  display: flex;
  min-height: 245px;
  flex-direction: column;
  padding: 24px;
  border: 1px solid var(--line);
  background: var(--surface);
  text-decoration: none;
}

.learning-sources li a:hover,
.learning-resource-group li a:hover {
  border-color: var(--teal);
}

.learning-sources li span,
.learning-resource-group li span {
  margin-bottom: 30px;
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.learning-sources li strong,
.learning-resource-group li strong {
  line-height: 1.25;
}

.learning-sources li p,
.learning-resource-group li p {
  color: var(--muted);
  font-size: 0.86rem;
}

.learning-resource-group li small {
  margin-top: auto;
  color: var(--teal);
  font-weight: 800;
}

.learning-module-navigation {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  margin-top: 72px;
}

.learning-module-navigation a {
  display: grid;
  gap: 8px;
  min-height: 140px;
  align-content: center;
  padding: 26px;
  border: 1px solid var(--ink);
  background: var(--surface);
  text-decoration: none;
}

.learning-module-navigation a:last-child {
  text-align: right;
}

.learning-module-navigation a:hover {
  background: var(--ink);
  color: var(--page);
}

.learning-module-navigation span {
  color: var(--teal);
  font-size: 0.72rem;
  font-weight: 900;
  text-transform: uppercase;
}

.learning-share {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  margin-top: 22px;
}

.learning-share a {
  padding: 9px 12px;
  border: 1px solid var(--line);
  background: var(--surface);
  font-size: 0.8rem;
  font-weight: 800;
  text-decoration: none;
}

.learning-resource-index {
  display: grid;
  gap: 66px;
}

.learning-resource-group h2 {
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--ink);
  font-size: clamp(1.7rem, 3vw, 2.7rem);
}

.learning-glossary dl {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin: 0;
  border-top: 1px solid var(--line);
}

.learning-glossary dl > div {
  padding: 22px;
  border-right: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: var(--surface);
}

.learning-glossary dl > div:nth-child(even) {
  border-right: 0;
}

.learning-glossary dt {
  margin-bottom: 8px;
  color: var(--teal);
  font-weight: 900;
}

.learning-glossary dd {
  margin: 0;
  color: var(--muted);
  line-height: 1.55;
}

@media (max-width: 1120px) {
  .learning-hero,
  .learning-module-hero,
  .learning-path,
  .learning-safety,
  .learning-source-note,
  .learning-route-advice {
    grid-template-columns: 1fr;
  }

  .learning-hero {
    min-height: 0;
  }

  .learning-principle-grid,
  .learning-track-grid,
  .learning-stats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learning-stats div:nth-child(2) {
    border-right: 0;
  }

  .learning-stats div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--line);
  }

  .learning-module-grid,
  .learning-sources > ul,
  .learning-resource-group > ul {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .learning-module-layout {
    grid-template-columns: 210px minmax(0, 1fr);
    gap: 42px;
  }

  .learning-source-note,
  .learning-route-advice {
    align-items: start;
  }
}

@media (max-width: 760px) {
  .learning-main {
    padding-bottom: 48px;
  }

  .learning-hero h1,
  .learning-module-hero h1,
  .learning-page-hero h1 {
    max-width: none;
    font-size: clamp(2.8rem, 15vw, 4.7rem);
  }

  .learning-hero {
    padding-top: 34px;
  }

  .learning-hero-board {
    min-height: 0;
    padding: 24px;
    box-shadow: 10px 12px 0 rgba(17, 99, 92, 0.12);
  }

  .learning-board-grid,
  .learning-principle-grid,
  .learning-track-grid,
  .learning-module-grid,
  .learning-stats,
  .learning-lab-header,
  .learning-lab-grid,
  .learning-checkpoint,
  .learning-sources > ul,
  .learning-resource-group > ul,
  .learning-module-navigation,
  .learning-glossary dl {
    grid-template-columns: 1fr;
  }

  .learning-stats div {
    min-height: 0;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .learning-stats div:last-child {
    border-bottom: 0;
  }

  .learning-heading-row {
    display: grid;
    align-items: start;
  }

  .learning-module-card {
    min-height: 300px;
  }

  .learning-source-note,
  .learning-route-advice {
    gap: 12px;
  }

  .learning-path {
    gap: 24px;
  }

  .learning-path-modules a {
    grid-template-columns: 34px minmax(0, 1fr);
  }

  .learning-path-modules small {
    grid-column: 2;
  }

  .learning-module-layout {
    display: block;
    padding-top: 42px;
  }

  .learning-module-toc {
    position: static;
    margin-bottom: 54px;
  }

  .learning-lesson {
    gap: 60px;
  }

  .learning-lesson-section {
    grid-template-columns: 1fr;
    gap: 8px;
  }

  .learning-lab-grid aside {
    border-top: 1px solid var(--ink);
    border-left: 0;
  }

  .learning-module-navigation a:last-child {
    text-align: left;
  }

  .learning-glossary dl > div {
    border-right: 0;
  }
}