:root {
  --course-ink: #15171b;
  --course-soft: #24272d;
  --course-paper: #f4f1eb;
  --course-white: #fff;
  --course-muted: #65686e;
  --course-line: #dedad2;
  --course-red: #ef171b;
  --course-red-dark: #b90c10;
}

.course-page { background: var(--course-paper); }
.course-page main { overflow: hidden; }
.course-shell { width: min(1280px, calc(100% - 56px)); margin-inline: auto; }
.course-page h1, .course-page h2, .course-page h3, .course-page h4, .course-page p { text-wrap: pretty; }
.course-eyebrow { margin: 0 0 17px; color: var(--course-red); font-size: .7rem; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
.course-eyebrow-light { color: #ff9a9d; }

.course-hero { color: #fff; background: radial-gradient(circle at 79% 22%, rgba(239,23,27,.18), transparent 28%), linear-gradient(132deg, #111318, #24272d 62%, #121419); }
.course-hero-grid { min-height: 680px; display: grid; grid-template-columns: minmax(0, 1.07fr) minmax(390px, .73fr); align-items: center; gap: 82px; }
.course-hero-copy { padding: 82px 0 76px; }
.course-hero h1 { max-width: 820px; margin: 0; font-size: clamp(3.4rem, 6.15vw, 6.75rem); line-height: .9; letter-spacing: -.07em; }
.course-hero h1 span { color: #aeb2b9; }
.course-lead { max-width: 730px; margin: 30px 0 0; color: #c9cdd3; font-size: 1.08rem; line-height: 1.7; }
.course-actions { margin-top: 34px; display: flex; flex-wrap: wrap; gap: 12px; }
.course-button { min-height: 52px; padding: 14px 21px; display: inline-flex; align-items: center; justify-content: center; border: 1px solid transparent; font-size: .8rem; font-weight: 850; transition: transform .2s, background .2s, border-color .2s; }
.course-button:hover { transform: translateY(-2px); }
.course-button-primary { color: #fff; background: var(--course-red); box-shadow: 0 15px 38px rgba(239,23,27,.24); }
.course-button-primary:hover { background: var(--course-red-dark); }
.course-button-ghost { color: #fff; border-color: #565b64; background: rgba(255,255,255,.035); }
.course-button-ghost:hover { border-color: #fff; }
.course-button-light { color: var(--course-red-dark); background: #fff; }
.course-hero-proof { margin: 48px 0 0; padding: 29px 0 0; display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; border-top: 1px solid #3c4047; list-style: none; }
.course-hero-proof li { display: grid; gap: 3px; }
.course-hero-proof strong { color: #fff; font-size: .9rem; }
.course-hero-proof span { color: #92979f; font-size: .7rem; }

.course-hero-panel { padding: 42px; border: 1px solid #454950; background: rgba(13,15,19,.68); box-shadow: 0 30px 80px rgba(0,0,0,.28); }
.course-hero-panel > p { margin: 0 0 12px; color: #ff8588; font-size: .7rem; font-weight: 850; letter-spacing: .12em; text-transform: uppercase; }
.course-hero-panel > strong { display: block; font-size: clamp(1.8rem, 3.2vw, 3.25rem); line-height: 1.02; letter-spacing: -.05em; }
.course-model-cloud { margin-top: 30px; display: flex; flex-wrap: wrap; gap: 8px; }
.course-model-cloud span { padding: 9px 11px; border: 1px solid #52565e; color: #e6e8eb; font-size: .68rem; font-weight: 800; }
.course-hero-panel small { margin-top: 28px; display: block; color: #92979f; line-height: 1.6; }

.course-overview { padding: 112px 0; background: var(--course-paper); }
.course-heading-row { display: grid; grid-template-columns: minmax(0, 1.1fr) minmax(340px, .6fr); align-items: end; gap: 80px; }
.course-heading-row h2, .course-now-playing h2, .course-next-step h2 { margin: 0; color: var(--course-ink); font-size: clamp(2.5rem, 4.7vw, 5rem); line-height: .96; letter-spacing: -.06em; }
.course-heading-row > p { margin: 0; color: var(--course-muted); }
.course-outcomes { margin-top: 48px; display: grid; grid-template-columns: repeat(4, 1fr); border-top: 1px solid var(--course-line); border-left: 1px solid var(--course-line); background: #fff; }
.course-outcomes article { min-height: 205px; padding: 26px; border-right: 1px solid var(--course-line); border-bottom: 1px solid var(--course-line); }
.course-outcomes span { color: var(--course-red); font-size: .67rem; font-weight: 900; }
.course-outcomes h3 { margin: 28px 0 9px; color: var(--course-ink); font-size: 1rem; }
.course-outcomes p { margin: 0; color: var(--course-muted); font-size: .78rem; }
.course-tools { margin-top: 22px; border: 1px solid var(--course-line); background: #fff; }
.course-tools summary { padding: 22px 24px; display: flex; justify-content: space-between; gap: 20px; cursor: pointer; color: var(--course-ink); font-size: .82rem; font-weight: 850; list-style: none; }
.course-tools summary::-webkit-details-marker { display: none; }
.course-tools summary span { color: var(--course-red-dark); font-size: .7rem; }
.course-tools ul { margin: 0; padding: 0 24px 24px 43px; columns: 2; color: var(--course-muted); font-size: .78rem; }
.course-tools li { margin-bottom: 7px; break-inside: avoid; }

.course-learning { padding: 112px 0; background: #fff; }
.course-learning-grid { display: grid; grid-template-columns: minmax(0, 1.12fr) minmax(390px, .58fr); align-items: start; gap: 62px; }
.course-player-column { min-width: 0; position: sticky; top: 92px; }
.course-player { aspect-ratio: 16 / 9; overflow: hidden; background: #090a0c; box-shadow: 0 25px 60px rgba(20,22,26,.15); }
.course-player iframe { width: 100%; height: 100%; display: block; border: 0; }
.course-now-playing { padding: 31px 0 0; }
.course-now-playing small { color: var(--course-red); font-size: .66rem; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.course-now-playing h2 { margin-top: 10px; font-size: clamp(2rem, 3.3vw, 3.5rem); }
.course-now-playing p { max-width: 760px; margin: 17px 0 0; color: var(--course-muted); }
.course-now-playing a { margin-top: 19px; display: inline-flex; color: var(--course-red-dark); font-size: .75rem; font-weight: 850; }
.course-safety-note { margin-top: 28px; padding: 19px 21px; border-left: 3px solid var(--course-red); background: #f6f3ed; }
.course-safety-note strong { color: var(--course-ink); font-size: .76rem; }
.course-safety-note p { margin: 5px 0 0; color: var(--course-muted); font-size: .72rem; }

.course-curriculum { border-top: 1px solid var(--course-line); }
.course-curriculum-head { padding: 0 0 28px; }
.course-curriculum-head h2 { margin: 0; color: var(--course-ink); font-size: 1.7rem; letter-spacing: -.04em; }
.course-module { border-bottom: 1px solid var(--course-line); }
.course-module > summary { min-height: 77px; padding: 18px 4px; display: grid; grid-template-columns: 34px 1fr auto; align-items: center; gap: 13px; cursor: pointer; list-style: none; }
.course-module > summary::-webkit-details-marker { display: none; }
.course-module > summary > span { color: var(--course-red); font-size: .64rem; font-weight: 900; }
.course-module > summary > strong { color: var(--course-ink); font-size: .82rem; }
.course-module > summary > small { color: #92959a; font-size: .62rem; }
.course-lesson-list { padding: 0 0 15px; display: grid; gap: 4px; }
.course-lesson { width: 100%; padding: 13px 12px; display: grid; grid-template-columns: 30px 1fr auto; align-items: center; gap: 10px; border: 0; color: var(--course-ink); background: transparent; text-align: left; cursor: pointer; transition: color .2s, background .2s; }
.course-lesson:hover { background: #f5f2ec; }
.course-lesson.is-active { color: #fff; background: var(--course-ink); }
.course-lesson > span { color: var(--course-red); font-size: .62rem; font-weight: 900; }
.course-lesson.is-active > span { color: #ff787b; }
.course-lesson > strong { font-size: .72rem; line-height: 1.35; }
.course-lesson > b { color: var(--course-red); font-size: .65rem; }
.course-lesson.is-active > b { color: #fff; }

.course-next-step { padding: 92px 0; color: #fff; background: var(--course-red-dark); }
.course-next-grid { display: grid; grid-template-columns: minmax(0, 1.15fr) minmax(300px, .5fr); align-items: end; gap: 80px; }
.course-next-step h2 { color: #fff; font-size: clamp(2.4rem, 4.4vw, 4.7rem); }
.course-next-step p:not(.course-eyebrow) { max-width: 760px; color: #ffd3d4; }
.course-next-actions { display: grid; justify-items: start; gap: 18px; }
.course-text-link { color: #fff; font-size: .78rem; font-weight: 850; }

.course-button:focus-visible, .course-lesson:focus-visible, .course-tools summary:focus-visible, .course-module summary:focus-visible, .course-text-link:focus-visible { outline: 3px solid rgba(239,23,27,.35); outline-offset: 3px; }

@media (max-width: 1080px) {
  .course-hero-grid, .course-heading-row, .course-learning-grid, .course-next-grid { grid-template-columns: 1fr; }
  .course-hero-grid { gap: 10px; padding-bottom: 72px; }
  .course-hero-copy { padding-bottom: 20px; }
  .course-hero-panel { max-width: 720px; }
  .course-heading-row, .course-next-grid { gap: 36px; }
  .course-outcomes { grid-template-columns: 1fr 1fr; }
  .course-player-column { position: static; }
}

@media (max-width: 720px) {
  .course-shell { width: min(100% - 30px, 1280px); }
  .course-hero h1 { font-size: clamp(3rem, 15vw, 5rem); }
  .course-hero-proof { grid-template-columns: 1fr; gap: 15px; }
  .course-hero-panel { padding: 30px 24px; }
  .course-overview, .course-learning { padding: 76px 0; }
  .course-heading-row h2 { font-size: clamp(2.35rem, 12vw, 3.8rem); }
  .course-outcomes { grid-template-columns: 1fr; }
  .course-outcomes article { min-height: 170px; }
  .course-tools ul { columns: 1; }
  .course-player { margin-inline: -15px; }
  .course-module > summary { grid-template-columns: 28px 1fr auto; }
  .course-next-step { padding: 74px 0; }
  .course-actions { display: grid; }
  .course-button { width: 100%; }
}

@media (prefers-reduced-motion: reduce) {
  .course-page *, .course-page *::before, .course-page *::after { scroll-behavior: auto !important; transition: none !important; }
}