.ai-training-course-page {
  --course-bg: #070b12;
  --course-surface: #0f1826;
  --course-surface-strong: #15233a;
  --course-text: #e8eef9;
  --course-muted: #a8b7cf;
  --course-accent: #19d4c0;
  --course-accent-alt: #ff8f5c;
  --course-border: rgba(136, 163, 199, 0.25);
  --course-shadow: 0 18px 48px rgba(0, 6, 18, 0.45);
  background:
    radial-gradient(circle at 12% -10%, rgba(25, 212, 192, 0.12), transparent 40%),
    radial-gradient(circle at 88% 8%, rgba(255, 143, 92, 0.15), transparent 38%),
    var(--course-bg);
  color: var(--course-text);
}

.ai-course-main {
  width: min(1120px, calc(100% - 2.5rem));
  margin: 0 auto;
  padding: clamp(5.5rem, 8vw, 7.5rem) 0 5rem;
}

.course-hero {
  background: linear-gradient(140deg, rgba(25, 212, 192, 0.14), rgba(21, 35, 58, 0.7) 52%, rgba(255, 143, 92, 0.12));
  border: 1px solid var(--course-border);
  border-radius: 1.35rem;
  box-shadow: var(--course-shadow);
  padding: clamp(1.25rem, 2vw, 1.9rem);
}

.course-hero__grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 1.25rem;
  align-items: stretch;
}

.course-hero__copy h1 {
  margin: 0.2rem 0 0.75rem;
  font-family: "Space Grotesk", "Montserrat", sans-serif;
  font-size: clamp(1.9rem, 3.8vw, 3.1rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.course-subheadline {
  max-width: 64ch;
  margin: 0;
  color: var(--course-muted);
  font-size: clamp(1rem, 1.8vw, 1.12rem);
  line-height: 1.62;
}

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

.course-hero__meta {
  background: rgba(8, 13, 21, 0.72);
  border: 1px solid var(--course-border);
  border-radius: 1rem;
  padding: 1.05rem 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.course-hero__meta h2 {
  margin: 0;
  font-size: 1.1rem;
  font-family: "Space Grotesk", "Montserrat", sans-serif;
}

.course-hero__meta dl {
  margin: 0;
  display: grid;
  gap: 0.7rem;
}

.course-hero__meta dt {
  color: var(--course-muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.09em;
}

.course-hero__meta dd {
  margin: 0.17rem 0 0;
  font-size: 0.99rem;
  line-height: 1.45;
}

.course-anchor-nav {
  position: sticky;
  top: 4.55rem;
  z-index: 14;
  margin-top: 1.15rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.56rem;
  padding: 0.8rem;
  border: 1px solid var(--course-border);
  border-radius: 0.92rem;
  background: rgba(7, 11, 18, 0.88);
  backdrop-filter: blur(8px);
}

.course-anchor-nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2rem;
  padding: 0.36rem 0.72rem;
  border-radius: 999px;
  border: 1px solid rgba(136, 163, 199, 0.34);
  color: var(--course-muted);
  font-size: 0.79rem;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease, background 0.2s ease;
}

.course-anchor-nav a:hover,
.course-anchor-nav a:focus-visible {
  color: var(--course-text);
  border-color: rgba(25, 212, 192, 0.7);
  background: rgba(25, 212, 192, 0.12);
  outline: none;
}

.course-section {
  margin-top: 1.15rem;
  border: 1px solid var(--course-border);
  border-radius: 1.15rem;
  background: linear-gradient(160deg, rgba(14, 22, 35, 0.95), rgba(12, 18, 29, 0.85));
  box-shadow: var(--course-shadow);
  padding: clamp(1.1rem, 2vw, 1.55rem);
}

.course-section__header {
  margin-bottom: 0.96rem;
}

.course-section__header h2 {
  margin: 0.28rem 0 0;
  font-size: clamp(1.35rem, 2.4vw, 1.9rem);
  line-height: 1.2;
  text-wrap: balance;
}

.course-card-grid {
  display: grid;
  gap: 0.8rem;
}

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

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

.course-card,
.course-module {
  border: 1px solid rgba(136, 163, 199, 0.29);
  border-radius: 0.86rem;
  padding: 0.95rem;
  background: rgba(12, 19, 31, 0.72);
}

.course-card h3,
.course-module h3 {
  margin: 0;
  font-size: 1.02rem;
}

.course-card p,
.course-module p,
.course-quote p,
.course-cta p {
  margin: 0.48rem 0 0;
  color: var(--course-muted);
  line-height: 1.58;
  font-size: 0.97rem;
}

.course-checklist,
.course-audience-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.62rem;
}

.course-checklist li,
.course-audience-list li {
  position: relative;
  border: 1px solid rgba(136, 163, 199, 0.24);
  border-radius: 0.82rem;
  background: rgba(12, 19, 31, 0.72);
  padding: 0.73rem 0.83rem 0.73rem 2.2rem;
  color: var(--course-text);
  line-height: 1.5;
}

.course-checklist li::before,
.course-audience-list li::before {
  content: "";
  position: absolute;
  left: 0.86rem;
  top: 0.78rem;
  width: 0.9rem;
  height: 0.9rem;
  border-radius: 999px;
  background: linear-gradient(130deg, var(--course-accent), var(--course-accent-alt));
  box-shadow: 0 0 0 4px rgba(25, 212, 192, 0.12);
}

.course-module-list {
  display: grid;
  gap: 0.68rem;
}

.course-chip-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
}

.course-chip {
  border: 1px solid rgba(136, 163, 199, 0.31);
  border-radius: 999px;
  background: rgba(12, 19, 31, 0.72);
  padding: 0.35rem 0.7rem;
  font-size: 0.83rem;
  color: var(--course-text);
}

.course-price-card {
  position: relative;
  overflow: hidden;
}

.course-price {
  margin: 0.35rem 0 0;
  font-size: 1.42rem;
  font-family: "Space Grotesk", "Montserrat", sans-serif;
  color: var(--course-accent);
  letter-spacing: -0.01em;
}

.course-cta {
  border: 1px solid rgba(136, 163, 199, 0.28);
  border-radius: 1rem;
  background: linear-gradient(150deg, rgba(25, 212, 192, 0.14), rgba(12, 19, 31, 0.95) 48%, rgba(255, 143, 92, 0.16));
  padding: 1rem;
}

.course-cta h2 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.38rem, 2.2vw, 1.95rem);
  text-wrap: balance;
}

.course-hero__actions {
  margin-top: 0.92rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.course-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.45rem;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  padding: 0.34rem 0.95rem;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

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

.course-btn--primary {
  color: #04111e;
  border: 1px solid transparent;
  background: linear-gradient(130deg, var(--course-accent), #6de4f4 58%, var(--course-accent-alt));
  box-shadow: 0 8px 20px rgba(25, 212, 192, 0.25);
}

.course-btn--ghost {
  color: var(--course-text);
  border: 1px solid rgba(136, 163, 199, 0.36);
  background: rgba(11, 17, 28, 0.72);
}

.course-btn--ghost:hover,
.course-btn--ghost:focus-visible {
  border-color: rgba(25, 212, 192, 0.65);
  box-shadow: 0 8px 20px rgba(2, 9, 20, 0.35);
}

.course-track-grid {
  margin-top: 0.85rem;
  display: grid;
  gap: 0.62rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.course-track-card {
  text-decoration: none;
  color: var(--course-text);
  border: 1px solid rgba(136, 163, 199, 0.28);
  border-radius: 0.82rem;
  background: rgba(12, 19, 31, 0.66);
  padding: 0.74rem 0.82rem;
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 0.55rem;
  transition: border-color 0.2s ease, background 0.2s ease;
}

.course-track-card span {
  font-weight: 600;
  font-size: 0.93rem;
}

.course-track-card small {
  color: var(--course-muted);
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.course-track-card:hover,
.course-track-card:focus-visible {
  border-color: rgba(25, 212, 192, 0.72);
  background: rgba(16, 26, 41, 0.94);
  outline: none;
}

.course-track-card.is-current {
  border-color: rgba(25, 212, 192, 0.86);
  background: rgba(25, 212, 192, 0.14);
}

@media (max-width: 1000px) {
  .course-hero__grid {
    grid-template-columns: 1fr;
  }

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

@media (max-width: 760px) {
  .ai-course-main {
    width: min(100%, calc(100% - 1.2rem));
    padding-top: 5rem;
  }

  .course-anchor-nav {
    top: 4rem;
    padding: 0.62rem;
  }

  .course-anchor-nav a {
    font-size: 0.76rem;
    min-height: 1.88rem;
  }

  .course-card-grid--three,
  .course-card-grid--two,
  .course-track-grid {
    grid-template-columns: 1fr;
  }

  .course-hero__actions {
    flex-direction: column;
  }

  .course-btn {
    width: 100%;
  }
}

/* 30-minute training flow + interactive quiz */
.course-sprint-grid {
  display: grid;
  gap: 0.72rem;
  grid-template-columns: repeat(5, minmax(0, 1fr));
}

.course-sprint-step {
  border: 1px solid rgba(136, 163, 199, 0.3);
  border-radius: 0.9rem;
  background: rgba(10, 16, 26, 0.78);
  padding: 0.85rem;
}

.course-sprint-slot {
  margin: 0;
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--course-accent);
  font-weight: 700;
}

.course-sprint-step h3 {
  margin: 0.3rem 0 0;
  font-size: 0.98rem;
}

.course-sprint-step p {
  margin: 0.42rem 0 0;
  color: var(--course-muted);
  line-height: 1.52;
}

.course-theory-card {
  background: linear-gradient(150deg, rgba(25, 212, 192, 0.08), rgba(12, 19, 31, 0.84));
}

.course-exercise-grid {
  display: grid;
  gap: 0.72rem;
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.course-exercise-brief {
  color: #d5e7ff;
  font-weight: 600;
}

.course-exercise-deliverable {
  border-top: 1px dashed rgba(136, 163, 199, 0.35);
  padding-top: 0.5rem;
  color: #f8caa8;
  font-size: 0.9rem;
}

.course-quiz {
  display: grid;
  gap: 0.78rem;
}

.course-quiz-question {
  margin: 0;
  border: 1px solid rgba(136, 163, 199, 0.28);
  border-radius: 0.92rem;
  background: rgba(9, 14, 23, 0.82);
  padding: 0.88rem;
}

.course-quiz-question legend {
  font-weight: 700;
  margin-bottom: 0.55rem;
  padding: 0 0.2rem;
}

.course-quiz-options {
  display: grid;
  gap: 0.52rem;
}

.course-quiz-option {
  display: flex;
  align-items: flex-start;
  gap: 0.55rem;
  border: 1px solid rgba(136, 163, 199, 0.24);
  border-radius: 0.76rem;
  background: rgba(12, 18, 29, 0.75);
  padding: 0.56rem 0.62rem;
}

.course-quiz-option input {
  margin-top: 0.2rem;
}

.course-quiz-option span {
  line-height: 1.45;
  color: var(--course-text);
}

.course-quiz-question.is-correct {
  border-color: rgba(76, 175, 80, 0.66);
  box-shadow: 0 0 0 1px rgba(76, 175, 80, 0.24) inset;
}

.course-quiz-question.is-wrong {
  border-color: rgba(255, 138, 101, 0.7);
  box-shadow: 0 0 0 1px rgba(255, 138, 101, 0.28) inset;
}

.course-quiz-explain {
  margin: 0.62rem 0 0;
  color: #d9e2f7;
  font-size: 0.9rem;
}

.course-quiz-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.68rem;
}

.course-quiz-result {
  margin: 0;
  color: #ffd7ba;
  font-weight: 600;
}

.course-resource-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.course-resource-list li a {
  display: inline-flex;
  align-items: center;
  gap: 0.48rem;
  border: 1px solid rgba(136, 163, 199, 0.3);
  border-radius: 999px;
  padding: 0.52rem 0.85rem;
  color: var(--course-text);
  text-decoration: none;
  background: rgba(12, 19, 31, 0.72);
}

.course-resource-list li a:hover,
.course-resource-list li a:focus-visible {
  border-color: rgba(25, 212, 192, 0.72);
  outline: none;
}

.course-glossary-grid {
  display: grid;
  gap: 0.68rem;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.course-glossary-item {
  border: 1px solid rgba(136, 163, 199, 0.26);
  border-radius: 0.82rem;
  background: rgba(12, 19, 31, 0.72);
  padding: 0.8rem;
}

.course-glossary-item h3 {
  margin: 0;
  font-size: 0.96rem;
}

.course-glossary-item p {
  margin: 0.46rem 0 0;
  color: var(--course-muted);
  line-height: 1.5;
}

@media (max-width: 1180px) {
  .course-sprint-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 980px) {
  .course-exercise-grid,
  .course-glossary-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 760px) {
  .course-sprint-grid {
    grid-template-columns: 1fr;
  }

  .course-quiz-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .course-quiz-actions .course-btn {
    width: 100%;
  }
}