:root {
  color-scheme: dark;
  --ink: #f4f1e9;
  --muted: #a6b0b7;
  --faint: #6f7b83;
  --graphite-950: #0b1014;
  --graphite-900: #10171c;
  --graphite-850: #141d23;
  --graphite-800: #1a252c;
  --line: rgba(204, 229, 228, .16);
  --line-strong: rgba(141, 228, 224, .42);
  --cyan: #8de4e0;
  --cyan-soft: #c2f3ed;
  --amber: #f3ba70;
  --amber-soft: #ffe0ad;
  --danger: #ff9c82;
  --shadow: 0 22px 60px rgba(0, 0, 0, .28);
  --container: 1180px;
  --gutter: clamp(1.15rem, 3vw, 3rem);
  --space-1: .5rem;
  --space-2: .75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --space-8: 7rem;
  --radius-sm: .35rem;
  --radius-md: .75rem;
  --radius-lg: 1.25rem;
  --display: "Trebuchet MS", "Avenir Next", Avenir, sans-serif;
  --body: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--graphite-950);
  color: var(--ink);
  font-family: var(--body);
  font-size: 1rem;
  line-height: 1.65;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; height: auto; }
a { color: var(--cyan); text-underline-offset: .2em; }
a:hover { color: var(--cyan-soft); }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--amber); outline-offset: 4px; }

.skip-link {
  position: fixed;
  z-index: 10;
  top: .75rem;
  left: .75rem;
  transform: translateY(-180%);
  padding: .65rem .9rem;
  background: var(--amber);
  color: var(--graphite-950);
  font-weight: 800;
  border-radius: var(--radius-sm);
}
.skip-link:focus { transform: translateY(0); }

.container { width: min(var(--container), calc(100% - (var(--gutter) * 2))); margin-inline: auto; }
.narrow { max-width: 760px; }
.stack > * + * { margin-top: var(--space-4); }
.eyebrow {
  margin: 0 0 var(--space-3);
  color: var(--cyan);
  font-size: .72rem;
  font-weight: 800;
  letter-spacing: .16em;
  line-height: 1.3;
  text-transform: uppercase;
}
.kicker { color: var(--amber); font-size: .78rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
h1, h2, h3, h4 { margin: 0; color: var(--ink); font-family: var(--display); line-height: 1.08; letter-spacing: -.035em; }
h1 { font-size: clamp(2.9rem, 7vw, 6.4rem); max-width: 11ch; }
h2 { font-size: clamp(2rem, 4vw, 3.7rem); max-width: 16ch; }
h3 { font-size: clamp(1.35rem, 2.5vw, 1.9rem); }
h4 { font-size: 1.05rem; letter-spacing: -.01em; }
p { margin: 0; }
.lede { max-width: 64ch; color: var(--muted); font-size: clamp(1.05rem, 1.7vw, 1.25rem); }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.fine-print { color: var(--faint); font-size: .83rem; }

.site-header { padding: 1.4rem 0; border-bottom: 1px solid rgba(204, 229, 228, .09); }
.site-header-inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; }
.brand { display: inline-flex; align-items: center; gap: .65rem; color: var(--ink); font-family: var(--display); font-size: 1.08rem; font-weight: 800; letter-spacing: -.02em; text-decoration: none; }
.brand-mark { width: 1.45rem; height: 1.45rem; display: inline-grid; place-items: center; border: 1px solid var(--cyan); border-radius: 50%; color: var(--cyan); font-family: var(--body); font-size: .7rem; font-weight: 900; }
.header-note { color: var(--faint); font-size: .82rem; }

.button-row { display: flex; flex-wrap: wrap; align-items: center; gap: .8rem; }
.button {
  display: inline-flex;
  min-height: 3rem;
  align-items: center;
  justify-content: center;
  gap: .55rem;
  padding: .72rem 1.1rem;
  border: 1px solid var(--cyan);
  border-radius: 999px;
  background: var(--cyan);
  color: var(--graphite-950);
  font-size: .9rem;
  font-weight: 850;
  text-decoration: none;
  transition: background-color .2s ease, border-color .2s ease, color .2s ease, transform .2s ease;
}
.button:hover { border-color: var(--cyan-soft); background: var(--cyan-soft); color: var(--graphite-950); transform: translateY(-2px); }
.button--secondary { border-color: var(--line-strong); background: transparent; color: var(--cyan-soft); }
.button--secondary:hover { background: rgba(141, 228, 224, .1); color: var(--ink); }
.button--amber { border-color: var(--amber); background: var(--amber); }
.button--amber:hover { border-color: var(--amber-soft); background: var(--amber-soft); }

.hero { position: relative; overflow: hidden; padding: clamp(4rem, 9vw, 8.5rem) 0 var(--space-8); }
.hero::before { position: absolute; inset: 0; z-index: -2; background: radial-gradient(circle at 82% 16%, rgba(70, 154, 164, .17), transparent 31rem), radial-gradient(circle at 8% 85%, rgba(181, 129, 64, .1), transparent 28rem); content: ""; }
.hero::after { position: absolute; inset: auto 0 0; z-index: -1; height: 10rem; background: linear-gradient(transparent, var(--graphite-950)); content: ""; }
.hero-grid { display: grid; grid-template-columns: minmax(0, 1.06fr) minmax(300px, .94fr); align-items: center; gap: clamp(2rem, 6vw, 6.5rem); }
.hero-copy .lede { margin-top: var(--space-5); }
.hero-copy .button-row { margin-top: var(--space-5); }
.hero-art { position: relative; isolation: isolate; }
.hero-art::before { position: absolute; z-index: -1; inset: 8% -4% -7%; border: 1px solid var(--line); border-radius: 40% 40% var(--radius-lg) var(--radius-lg); transform: rotate(3deg); content: ""; }
.hero-art img { width: 100%; aspect-ratio: 1 / 1.08; object-fit: cover; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.hero-art-caption { display: flex; justify-content: space-between; gap: 1rem; margin-top: .75rem; color: var(--faint); font-size: .75rem; letter-spacing: .05em; text-transform: uppercase; }

.section { padding: var(--space-8) 0; }
.section--tight { padding: var(--space-6) 0; }
.section--border { border-top: 1px solid var(--line); }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: var(--space-5); margin-bottom: var(--space-6); }
.section-head p { max-width: 54ch; color: var(--muted); }
.section-head h2 + p { margin-top: var(--space-3); }
.section-label { margin-bottom: var(--space-2); color: var(--faint); font-size: .75rem; font-weight: 800; letter-spacing: .15em; text-transform: uppercase; }

.stats { display: grid; grid-template-columns: repeat(3, 1fr); border-block: 1px solid var(--line); }
.stat { padding: var(--space-5) var(--space-4); }
.stat + .stat { border-left: 1px solid var(--line); }
.stat-value { display: block; color: var(--cyan-soft); font-family: var(--display); font-size: clamp(1.8rem, 4vw, 3rem); letter-spacing: -.04em; }
.stat-label { display: block; margin-top: .25rem; color: var(--muted); font-size: .83rem; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1rem; }
.card-grid--two { grid-template-columns: repeat(2, 1fr); }
.surface { background: linear-gradient(145deg, rgba(25, 37, 44, .92), rgba(15, 23, 28, .92)); border: 1px solid var(--line); border-radius: var(--radius-md); box-shadow: 0 12px 38px rgba(0, 0, 0, .13); }
.surface--padding { padding: clamp(1.25rem, 2.6vw, 2rem); }
.course-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.15rem; }
.course-card { display: flex; min-width: 0; flex-direction: column; overflow: hidden; }
.course-card-image { width: 100%; aspect-ratio: 1.75 / 1; object-fit: cover; border-bottom: 1px solid var(--line); }
.course-card-body { display: flex; flex: 1; flex-direction: column; padding: clamp(1.25rem, 2.5vw, 1.9rem); }
.course-card-body .button-row { margin-top: auto; padding-top: var(--space-5); }
.course-card h3 { max-width: 18ch; }
.course-card h3 + p { margin-top: .65rem; }
.course-card-meta { display: flex; flex-wrap: wrap; gap: .55rem 1rem; margin: 1rem 0 0; color: var(--muted); font-size: .82rem; }
.course-card-meta span::before { display: inline-block; width: .35rem; height: .35rem; margin: 0 .45rem .12rem 0; border-radius: 50%; background: var(--amber); content: ""; }
.course-card-meta span:first-child::before { background: var(--cyan); }
.tag-list { display: flex; flex-wrap: wrap; gap: .45rem; margin: var(--space-4) 0 0; padding: 0; list-style: none; }
.tag { padding: .28rem .55rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .72rem; }
.tag--accent { border-color: rgba(243, 186, 112, .4); color: var(--amber-soft); }

.price { display: flex; flex-wrap: wrap; align-items: baseline; gap: .6rem .8rem; margin-top: var(--space-4); }
.price-original { color: var(--faint); font-size: .9rem; }
.price-original s { text-decoration-color: var(--amber); text-decoration-thickness: 2px; }
.price-current { color: var(--amber-soft); font-family: var(--display); font-size: 1.8rem; font-weight: 800; letter-spacing: -.03em; }
.price-note { flex-basis: 100%; color: var(--amber); font-size: .75rem; font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }

.split { display: grid; grid-template-columns: minmax(0, .84fr) minmax(0, 1.16fr); gap: clamp(2rem, 6vw, 6rem); align-items: start; }
.split--equal { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.feature-list { display: grid; gap: 1rem; margin: 0; padding: 0; list-style: none; }
.feature-list li { display: grid; grid-template-columns: 2.6rem 1fr; gap: 1rem; align-items: start; padding: 1rem 0; border-top: 1px solid var(--line); }
.feature-index { display: grid; width: 2.2rem; height: 2.2rem; place-items: center; border: 1px solid var(--line-strong); border-radius: 50%; color: var(--cyan); font-size: .75rem; font-weight: 800; }
.feature-list h3 { font-size: 1.15rem; letter-spacing: -.01em; }
.feature-list p { margin-top: .3rem; color: var(--muted); font-size: .92rem; }

.process { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--line); }
.process-step { min-height: 12rem; padding: 1.4rem; background: var(--graphite-900); }
.process-step strong { display: block; color: var(--amber); font-family: var(--display); font-size: 1.9rem; }
.process-step h3 { margin-top: 1.7rem; font-size: 1.1rem; letter-spacing: -.01em; }
.process-step p { margin-top: .4rem; color: var(--muted); font-size: .85rem; }

.quote { position: relative; padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid var(--line-strong); border-radius: var(--radius-lg); background: radial-gradient(circle at 94% 5%, rgba(141, 228, 224, .13), transparent 17rem), var(--graphite-900); }
.quote blockquote { max-width: 36ch; margin: 0; color: var(--cyan-soft); font-family: var(--display); font-size: clamp(1.5rem, 3vw, 2.5rem); line-height: 1.17; letter-spacing: -.04em; }
.quote figcaption { margin-top: var(--space-5); color: var(--muted); font-size: .85rem; }
.quote figcaption strong { display: block; color: var(--ink); }

.callout { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: center; gap: 2rem; padding: clamp(1.5rem, 4vw, 3rem); border: 1px solid rgba(243, 186, 112, .44); border-radius: var(--radius-lg); background: linear-gradient(110deg, rgba(83, 58, 31, .66), rgba(24, 31, 34, .94)); }
.callout h2 { max-width: 14ch; }
.callout p { max-width: 56ch; margin-top: .7rem; color: var(--muted); }

.page-hero { padding: clamp(3.5rem, 8vw, 7rem) 0 var(--space-7); border-bottom: 1px solid var(--line); }
.page-hero h1 { max-width: 15ch; }
.page-hero .lede { margin-top: var(--space-4); }
.breadcrumb { display: flex; flex-wrap: wrap; gap: .55rem; margin-bottom: var(--space-5); color: var(--faint); font-size: .8rem; }
.breadcrumb a { color: var(--muted); }

.course-hero { padding: clamp(3.5rem, 8vw, 7rem) 0 var(--space-7); }
.course-hero-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(300px, .72fr); align-items: center; gap: clamp(2rem, 7vw, 7rem); }
.course-hero h1 { max-width: 13ch; }
.course-hero .lede { margin-top: var(--space-4); }
.course-image { width: 100%; aspect-ratio: 1 / 1.08; object-fit: cover; border: 1px solid var(--line-strong); border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.course-facts { display: grid; grid-template-columns: repeat(2, 1fr); gap: .7rem; margin-top: var(--space-5); }
.fact { padding: .8rem; border-top: 1px solid var(--line); }
.fact dt { color: var(--faint); font-size: .7rem; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.fact dd { margin: .25rem 0 0; color: var(--ink); font-size: .9rem; }
.course-sidebar { position: sticky; top: 1rem; }

.syllabus { display: grid; gap: .7rem; }
.module { border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--graphite-900); }
.module summary { display: flex; align-items: baseline; justify-content: space-between; gap: 1rem; padding: 1.1rem 1.25rem; cursor: pointer; list-style: none; }
.module summary::-webkit-details-marker { display: none; }
.module summary::after { flex: 0 0 auto; color: var(--cyan); content: "+"; font-size: 1.3rem; font-weight: 300; }
.module[open] summary::after { content: "−"; }
.module summary:hover h3 { color: var(--cyan-soft); }
.module summary h3 { font-size: 1.1rem; letter-spacing: -.01em; }
.module summary span { color: var(--amber); font-size: .75rem; font-weight: 800; }
.module-content { padding: 0 1.25rem 1.25rem; }
.module-content p { color: var(--muted); font-size: .92rem; }
.lesson-list { display: grid; gap: .35rem; margin: .85rem 0 0; padding-left: 1.1rem; color: var(--muted); font-size: .88rem; }
.deliverable { margin-top: 1rem; padding: .8rem 1rem; border-left: 2px solid var(--amber); background: rgba(243, 186, 112, .07); color: var(--amber-soft); font-size: .84rem; }

.prose { max-width: 72ch; }
.prose > * + * { margin-top: 1.25rem; }
.prose h2 { margin-top: 3rem; font-size: 2rem; }
.prose h3 { margin-top: 2rem; font-size: 1.3rem; }
.prose ul { padding-left: 1.2rem; color: var(--muted); }
.prose li + li { margin-top: .45rem; }
.prose p, .prose dd { color: var(--muted); }
.prose dt { margin-top: 1.4rem; color: var(--ink); font-weight: 800; }

.notice { padding: 1rem 1.15rem; border-left: 2px solid var(--cyan); background: rgba(141, 228, 224, .06); color: var(--muted); }
.icon-list { display: grid; gap: .75rem; margin: 0; padding: 0; list-style: none; }
.icon-list li { display: flex; gap: .7rem; color: var(--muted); }
.icon-list li::before { flex: 0 0 auto; width: .45rem; height: .45rem; margin-top: .65rem; border-radius: 50%; background: var(--cyan); content: ""; }

.site-footer { margin-top: var(--space-8); padding: var(--space-7) 0 var(--space-5); border-top: 1px solid var(--line); background: #090e12; }
.footer-grid { display: grid; grid-template-columns: 1.6fr repeat(3, 1fr); gap: 2.5rem; }
.footer-brand { max-width: 24ch; }
.footer-brand p { margin-top: 1rem; color: var(--muted); font-size: .9rem; }
.footer-column h2 { margin-bottom: 1rem; color: var(--faint); font-family: var(--body); font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
.footer-links { display: grid; gap: .55rem; margin: 0; padding: 0; list-style: none; }
.footer-links a { color: var(--muted); font-size: .88rem; }
.footer-links a:hover { color: var(--cyan-soft); }
.footer-email { display: inline-block; margin-top: 1.25rem; color: var(--amber-soft); font-size: .86rem; }
.footer-bottom { display: flex; justify-content: space-between; gap: 1rem; margin-top: var(--space-7); padding-top: var(--space-4); border-top: 1px solid var(--line); color: var(--faint); font-size: .76rem; }

@media (max-width: 860px) {
  .hero-grid, .course-hero-grid, .split, .split--equal { grid-template-columns: 1fr; }
  .hero-art { max-width: 620px; }
  .course-sidebar { position: static; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
  .process { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-brand { grid-column: 1 / -1; }
}
@media (max-width: 580px) {
  :root { --space-8: 4.8rem; }
  .header-note { display: none; }
  .hero { padding-top: 3.5rem; }
  h1 { font-size: clamp(2.8rem, 15vw, 4.7rem); }
  .section-head { display: block; }
  .section-head p { margin-top: 1rem; }
  .stats, .course-grid, .card-grid, .card-grid--two, .process { grid-template-columns: 1fr; }
  .stat + .stat { border-top: 1px solid var(--line); border-left: 0; }
  .stat { padding: 1.25rem 0; }
  .callout { grid-template-columns: 1fr; }
  .course-facts { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: 2rem 1.2rem; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { display: block; }
  .footer-bottom p + p { margin-top: .4rem; }
}
[data-reveal] { opacity: 1; transform: none; }
.js [data-reveal] { transition: opacity .55s ease, transform .55s ease; }
.js [data-reveal].reveal-pending { opacity: 0; transform: translateY(12px); }
.js [data-reveal].is-visible { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
}