.ai-training-course-page {
  --course-bg: #06101e;
  --course-surface: #0d1728;
  --course-surface-strong: #13233b;
  --course-text: #edf3fb;
  --course-muted: #afc0d7;
  --course-accent: #30d8c8;
  --course-accent-alt: #ff8d55;
  --course-accent-soft: rgba(48, 216, 200, 0.14);
  --course-border: rgba(166, 190, 219, 0.16);
  --course-border-strong: rgba(166, 190, 219, 0.28);
  --course-shadow: 0 18px 48px rgba(1, 8, 18, 0.42);
  --course-diagram-bg: rgba(7, 16, 31, 0.76);
  background:
    radial-gradient(circle at 12% 0%, rgba(48, 216, 200, 0.14), transparent 30%),
    radial-gradient(circle at 88% 12%, rgba(255, 141, 85, 0.14), transparent 28%),
    var(--course-bg);
  color: var(--course-text);
}

.ai-course-main {
  width: min(1100px, calc(100% - 1.5rem));
  margin: 0 auto;
  padding: clamp(5.5rem, 8vw, 7rem) 0 4.5rem;
}

.course-breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
  color: var(--course-muted);
  font-size: 0.82rem;
  margin-bottom: 1rem;
}

.course-breadcrumbs a {
  color: inherit;
  text-decoration: none;
}

.course-breadcrumbs a:hover,
.course-breadcrumbs a:focus-visible {
  color: var(--course-text);
  outline: none;
}

.course-hero {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--course-border-strong);
  border-radius: 1.45rem;
  background:
    linear-gradient(145deg, rgba(14, 24, 42, 0.95), rgba(14, 24, 42, 0.82)),
    linear-gradient(145deg, var(--course-accent-soft), rgba(255, 255, 255, 0));
  box-shadow: var(--course-shadow);
  padding: 1rem;
}

.course-hero__grid {
  display: grid;
  gap: 1rem;
}

.course-hero__copy,
.course-hero__meta {
  position: relative;
  z-index: 1;
}

.course-eyebrow,
.course-section__kicker,
.course-meta-kicker {
  margin: 0;
  color: var(--course-accent);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.course-hero__copy h1 {
  margin: 0.45rem 0 0.85rem;
  font-family: "Space Grotesk", "Montserrat", sans-serif;
  font-size: clamp(2rem, 8vw, 3.55rem);
  line-height: 1.05;
  letter-spacing: -0.03em;
  text-wrap: balance;
}

.course-subheadline,
.course-section__header p,
.course-card p,
.course-example-card dd,
.course-model-card p,
.course-track-card p,
.course-feedback p {
  margin: 0;
  color: var(--course-muted);
  line-height: 1.65;
}

.course-hero__actions,
.course-lab-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1rem;
}

.course-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.9rem;
  padding: 0.72rem 1rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  font-weight: 700;
  line-height: 1.1;
  transition: transform 0.2s ease, border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
  cursor: pointer;
}

.course-btn:hover,
.course-btn:focus-visible {
  transform: translateY(-1px);
  outline: none;
}

.course-btn--primary {
  background: linear-gradient(135deg, var(--course-accent), var(--course-accent-alt));
  color: #06101e;
  box-shadow: 0 12px 28px rgba(0, 0, 0, 0.22);
}

.course-btn--ghost {
  background: rgba(255, 255, 255, 0.04);
  border-color: var(--course-border-strong);
  color: var(--course-text);
}

.course-btn--small {
  min-height: 2.45rem;
  padding-inline: 0.9rem;
  font-size: 0.92rem;
}

.course-fact-grid {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.15rem;
}

.course-fact-card,
.course-meta-card,
.course-diagram-card,
.course-card,
.course-example-card,
.course-lab-card,
.course-model-card,
.course-track-card,
.course-quiz-card,
.course-regulatory-snapshot,
.course-glossary-item {
  border: 1px solid var(--course-border);
  border-radius: 1rem;
  background: rgba(8, 18, 32, 0.76);
  box-shadow: 0 10px 28px rgba(0, 0, 0, 0.18);
}

.course-fact-card,
.course-meta-card,
.course-diagram-card,
.course-card,
.course-example-card,
.course-lab-card,
.course-model-card,
.course-track-card,
.course-quiz-card,
.course-regulatory-snapshot {
  padding: 1rem;
}

.course-fact-card h2 {
  margin: 0.35rem 0;
  font-size: 1.15rem;
  line-height: 1.2;
}

.course-fact-card p:last-child {
  margin-top: 0.28rem;
  font-size: 0.92rem;
}

.course-fact-label {
  color: var(--course-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.course-meta-list,
.course-signal-list,
.course-bullet-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.68rem;
}

.course-meta-list li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: flex-start;
  padding-bottom: 0.68rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.course-meta-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.course-meta-list strong {
  color: var(--course-text);
  font-size: 0.9rem;
}

.course-meta-list span {
  text-align: right;
  color: var(--course-muted);
  font-size: 0.9rem;
}

.course-diagram-card__header {
  margin-bottom: 0.85rem;
}

.course-diagram-card__header h2 {
  margin: 0.32rem 0 0;
  font-size: 1.12rem;
}

.course-diagram {
  width: 100%;
  height: auto;
  display: block;
}

.course-diagram text {
  fill: var(--course-text);
  font-size: 11px;
  font-family: "Space Grotesk", "Montserrat", sans-serif;
}

.course-signal-list {
  margin-top: 0.85rem;
}

.course-signal-list li,
.course-bullet-list li {
  position: relative;
  padding-left: 1.3rem;
  color: var(--course-muted);
  line-height: 1.6;
}

.course-signal-list li::before,
.course-bullet-list li::before {
  content: "";
  position: absolute;
  top: 0.62rem;
  left: 0;
  width: 0.65rem;
  height: 0.65rem;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--course-accent), var(--course-accent-alt));
  box-shadow: 0 0 0 4px rgba(255, 255, 255, 0.04);
}

.course-anchor-nav {
  position: sticky;
  top: 4.65rem;
  z-index: 16;
  display: flex;
  gap: 0.6rem;
  overflow-x: auto;
  margin: 1rem 0 0;
  padding: 0.75rem;
  border-radius: 1rem;
  border: 1px solid var(--course-border);
  background: rgba(6, 16, 30, 0.9);
  backdrop-filter: blur(12px);
  scrollbar-width: none;
}

.course-anchor-nav::-webkit-scrollbar {
  display: none;
}

.course-anchor-nav a {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.25rem;
  padding: 0.45rem 0.82rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  color: var(--course-muted);
  font-size: 0.86rem;
  text-decoration: none;
  transition: background 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

.course-anchor-nav a.is-active,
.course-anchor-nav a:hover,
.course-anchor-nav a:focus-visible {
  color: var(--course-text);
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.02));
  border-color: var(--course-accent);
  outline: none;
}

.course-section {
  margin-top: 1rem;
  padding: 1.05rem;
  border-radius: 1.2rem;
  border: 1px solid var(--course-border);
  background:
    linear-gradient(160deg, rgba(13, 23, 40, 0.95), rgba(8, 18, 32, 0.86)),
    linear-gradient(145deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0));
  box-shadow: var(--course-shadow);
  scroll-margin-top: 6.6rem;
}

.course-section__header {
  margin-bottom: 1rem;
}

.course-section__header h2 {
  margin: 0.35rem 0 0.55rem;
  font-size: clamp(1.45rem, 4vw, 2.1rem);
  line-height: 1.14;
  text-wrap: balance;
}

.course-divider {
  width: 160px;
  height: 10px;
  margin-top: 0.85rem;
}

.course-grid {
  display: grid;
  gap: 0.85rem;
}

.course-card,
.course-example-card,
.course-model-card,
.course-track-card,
.course-quiz-card {
  height: 100%;
}

.course-card h3,
.course-example-card h3,
.course-lab-card h3,
.course-model-card h3,
.course-track-card h3,
.course-quiz-card h3 {
  margin: 0 0 0.55rem;
  font-size: 1.08rem;
  line-height: 1.25;
}

.course-card--theory {
  position: relative;
}

.course-example-metadata {
  display: grid;
  gap: 0.7rem;
  margin: 0.85rem 0 0;
}

.course-example-metadata dt {
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--course-accent);
  font-weight: 700;
}

.course-example-metadata dd {
  margin: 0.25rem 0 0;
}

.course-lab-grid,
.course-quiz-stack,
.course-glossary-list {
  display: grid;
  gap: 0.85rem;
}

.course-lab-card__top p:last-child {
  margin-top: 0.35rem;
}

.course-choice-list,
.course-quiz-options {
  display: grid;
  gap: 0.7rem;
  margin-top: 1rem;
}

.course-choice {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.7rem;
  align-items: flex-start;
  width: 100%;
  border-radius: 0.95rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
  color: var(--course-text);
  padding: 0.85rem 0.9rem;
  text-align: left;
  cursor: pointer;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.course-choice:hover,
.course-choice:focus-visible {
  border-color: var(--course-accent);
  transform: translateY(-1px);
  outline: none;
}

.course-choice.is-selected {
  border-color: var(--course-accent);
  background: rgba(255, 255, 255, 0.06);
}

.course-choice.is-correct {
  border-color: #49d88c;
  background: rgba(73, 216, 140, 0.12);
}

.course-choice.is-wrong {
  border-color: #ff7d7d;
  background: rgba(255, 125, 125, 0.12);
}

.course-choice__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.7rem;
  height: 1.7rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.08);
  font-size: 0.85rem;
  font-weight: 700;
}

.course-feedback {
  margin-top: 0.95rem;
  padding: 0.95rem;
  border-radius: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.03);
}

.course-feedback strong {
  display: block;
  margin-bottom: 0.3rem;
}

.course-feedback--rubric p {
  margin-top: 0.7rem;
}

.course-textarea-wrap {
  display: grid;
  gap: 0.55rem;
  margin-top: 1rem;
}

.course-textarea-label,
.course-word-count {
  color: var(--course-muted);
  font-size: 0.84rem;
}

.course-reflection,
.course-search-wrap input {
  width: 100%;
  border-radius: 1rem;
  border: 1px solid var(--course-border-strong);
  background: rgba(255, 255, 255, 0.04);
  color: var(--course-text);
  padding: 0.9rem 1rem;
  font: inherit;
  line-height: 1.6;
}

.course-reflection:focus,
.course-search-wrap input:focus {
  border-color: var(--course-accent);
  outline: none;
  box-shadow: 0 0 0 4px rgba(48, 216, 200, 0.12);
}

.course-regulatory-snapshot {
  margin-bottom: 0.85rem;
  background:
    linear-gradient(135deg, rgba(48, 216, 200, 0.1), rgba(255, 141, 85, 0.08)),
    rgba(8, 18, 32, 0.9);
}

.course-regulatory-snapshot strong {
  display: inline-block;
  margin-bottom: 0.45rem;
}

.course-model-card__top {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  align-items: center;
  margin-bottom: 0.4rem;
}

.course-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.85rem;
}

.course-chip {
  display: inline-flex;
  align-items: center;
  min-height: 1.9rem;
  padding: 0.28rem 0.72rem;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(255, 255, 255, 0.05);
  color: var(--course-text);
  font-size: 0.79rem;
}

.course-chip--soft {
  color: var(--course-muted);
}

.course-track-card {
  display: block;
  text-decoration: none;
  color: inherit;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.course-track-card:hover,
.course-track-card:focus-visible {
  transform: translateY(-2px);
  border-color: var(--course-accent);
  outline: none;
}

.course-track-card--hub {
  background:
    linear-gradient(135deg, rgba(48, 216, 200, 0.09), rgba(255, 141, 85, 0.08)),
    rgba(8, 18, 32, 0.8);
}

.course-quiz-option {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
  padding: 0.9rem;
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: 0.95rem;
  background: rgba(255, 255, 255, 0.03);
}

.course-quiz-option input {
  margin-top: 0.25rem;
  accent-color: var(--course-accent);
}

.course-glossary-tools {
  margin-bottom: 0.9rem;
}

.course-search-wrap {
  display: grid;
  gap: 0.45rem;
}

.course-glossary-item {
  padding: 0;
  overflow: hidden;
}

.course-glossary-item summary {
  list-style: none;
  cursor: pointer;
  padding: 1rem;
  font-weight: 700;
}

.course-glossary-item summary::-webkit-details-marker {
  display: none;
}

.course-glossary-item summary::after {
  content: "+";
  float: right;
  color: var(--course-accent);
}

.course-glossary-item[open] summary::after {
  content: "−";
}

.course-glossary-item p {
  padding: 0 1rem 1rem;
  margin: 0;
}

@media (min-width: 700px) {
  .ai-course-main {
    width: min(1140px, calc(100% - 2rem));
  }

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

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

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

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

  .course-lab-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }
}

@media (min-width: 960px) {
  .course-hero {
    padding: 1.2rem;
  }

  .course-hero__grid {
    grid-template-columns: minmax(0, 1.45fr) minmax(300px, 0.95fr);
    gap: 1.1rem;
    align-items: start;
  }

  .course-section {
    padding: 1.35rem;
  }

  .course-quiz-stack {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 699px) {
  .ai-course-main {
    width: min(100%, calc(100% - 1rem));
    padding-top: 5.2rem;
  }

  .course-anchor-nav {
    top: 4rem;
  }

  .course-hero__actions,
  .course-lab-actions {
    flex-direction: column;
  }

  .course-btn {
    width: 100%;
  }

  .course-meta-list li {
    flex-direction: column;
    gap: 0.35rem;
  }

  .course-meta-list span {
    text-align: left;
  }
}