/* ZOVYNO Academy — Design 3 "Aurora": glass surfaces over an aurora gradient field.
   Tokens: primitive -> semantic -> component. Components use semantic/component tokens only. */

:root {
  /* primitive */
  --p-black: #070616;
  --p-coal: #0b0a20;
  --p-panel: #131132;
  --p-white: #f5f4ff;
  --p-fog: #b8b6d6;
  --p-cyan: #5eebff;
  --p-violet: #8b6cff;
  --p-violet-hi: #b7a6ff;
  --p-pink: #ff7bdc;
  --p-mint: #7cffcb;
  --p-amber: #ffd27a;

  /* semantic */
  --bg: var(--p-black);
  --bg-alt: var(--p-coal);
  --surface: rgb(255 255 255 / 0.06);
  --surface-hi: rgb(255 255 255 / 0.1);
  --text: var(--p-white);
  --muted: var(--p-fog);
  --line: rgb(255 255 255 / 0.13);
  --line-hi: rgb(255 255 255 / 0.24);
  --accent: var(--p-cyan);
  --on-accent: var(--p-black);
  --grad: linear-gradient(100deg, var(--p-cyan), var(--p-violet) 52%, var(--p-pink));
  --a1: var(--p-cyan);
  --a2: var(--p-violet-hi);
  --a3: var(--p-pink);
  --a4: var(--p-mint);
  --a5: var(--p-amber);
  --cyan: var(--p-cyan);
  --violet-hi: var(--p-violet-hi);
  --pink: var(--p-pink);
  --amber: var(--p-amber);
  --focus: var(--p-cyan);

  /* type */
  --font-display: 'Sora', 'Manrope', system-ui, sans-serif;
  --font-body: 'Manrope', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', ui-monospace, 'SFMono-Regular', Consolas, monospace;

  /* shape + motion */
  --r-sm: 12px;
  --r-md: 18px;
  --r-lg: 28px;
  --r-pill: 999px;
  --gutter: clamp(18px, 4vw, 40px);
  --ease: cubic-bezier(0.2, 0.8, 0.2, 1);
  --dur: 220ms;

  /* component */
  --btn-h: 54px;
  --card-bg: var(--surface);
  --card-border: var(--line);
  --header-h: 68px;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: clip;
}
h1,
h2,
h3,
p,
ul,
ol,
dl,
dd,
figure {
  margin: 0;
}
ul,
ol {
  padding: 0;
  list-style: none;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  padding: 0;
  cursor: pointer;
}
svg {
  display: block;
}
:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
  border-radius: 6px;
}
::selection {
  background: var(--accent);
  color: var(--on-accent);
}

.sprite {
  position: absolute;
  width: 0;
  height: 0;
  overflow: hidden;
}
.i {
  width: 1.2em;
  height: 1.2em;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.9;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.shell {
  width: min(1240px, 100% - 2 * var(--gutter));
  margin-inline: auto;
}
.skip {
  position: absolute;
  left: 12px;
  top: -80px;
  z-index: 200;
  padding: 12px 18px;
  border-radius: var(--r-sm);
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.skip:focus {
  top: 12px;
}

/* scroll progress */
.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 120;
  pointer-events: none;
}
.progress i {
  display: block;
  height: 100%;
  width: 100%;
  transform: scaleX(0);
  transform-origin: 0 50%;
  background: linear-gradient(90deg, var(--accent), var(--cyan), var(--violet-hi));
}

/* concept strip */
.strip {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px 20px;
  flex-wrap: wrap;
  padding: 9px var(--gutter);
  background: var(--accent);
  color: var(--on-accent);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  --focus: var(--p-black);
}
.strip a {
  padding: 4px 10px;
  border: 1.5px solid currentColor;
  border-radius: var(--r-pill);
}
.strip a:hover {
  background: var(--on-accent);
  color: var(--accent);
}

/* header */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgb(7 6 22 / 0.78);
  backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid var(--line);
}
.header-in {
  display: flex;
  align-items: center;
  gap: 24px;
  height: var(--header-h);
}
.logo {
  display: inline-flex;
  align-items: center;
  gap: 11px;
}
.logo-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border-radius: 11px;
  background: var(--accent);
  color: var(--on-accent);
  transition: transform var(--dur) var(--ease);
}
.logo:hover .logo-mark {
  transform: rotate(-8deg) scale(1.06);
}
.logo-mark svg {
  width: 24px;
  height: 24px;
  fill: none;
  stroke: currentColor;
  stroke-width: 3.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
.logo-word {
  display: grid;
  line-height: 1;
}
.logo-word strong {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}
.logo-word small {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  letter-spacing: 0.34em;
  color: var(--accent);
}
.nav {
  display: flex;
  gap: 4px;
  margin-inline: auto;
}
.nav a {
  padding: 10px 13px;
  border-radius: var(--r-pill);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--muted);
  transition:
    color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}
.nav a:hover,
.nav a.is-active {
  color: var(--text);
  background: rgb(255 255 255 / 0.07);
}
.nav a.is-active {
  color: var(--accent);
}
.menu-btn {
  display: none;
  place-items: center;
  width: 46px;
  height: 46px;
  margin-left: auto;
  border: 1px solid var(--line-hi);
  border-radius: 12px;
}
.menu-btn .i {
  width: 22px;
  height: 22px;
}
.menu-btn .i--close,
.menu-btn[aria-expanded='true'] .i--open {
  display: none;
}
.menu-btn[aria-expanded='true'] .i--close {
  display: block;
}
.mobile-panel {
  padding: 8px var(--gutter) 24px;
  border-top: 1px solid var(--line);
  background: var(--bg);
}
.mobile-panel nav a {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 14px 0;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 500;
}
.mobile-panel nav span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
}
.mobile-panel .btn {
  width: 100%;
  margin-top: 20px;
}

/* buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  min-height: var(--btn-h);
  padding: 0 24px;
  border-radius: var(--r-pill);
  border: 1.5px solid transparent;
  font-weight: 700;
  font-size: 1rem;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.btn .i {
  transition: transform var(--dur) var(--ease);
}
.btn:hover .i {
  transform: translateX(4px);
}
.btn:active {
  transform: scale(0.97);
}
.btn--sm {
  min-height: 44px;
  padding: 0 18px;
  font-size: 0.9rem;
}
.btn--primary {
  background: var(--accent);
  color: var(--on-accent);
  box-shadow: 0 0 0 0 rgb(94 235 255 / 0.5);
}
.btn--primary:hover {
  box-shadow:
    0 0 0 5px rgb(94 235 255 / 0.16),
    0 14px 40px -10px rgb(94 235 255 / 0.6);
  transform: translateY(-2px);
}
.btn--ghost {
  border-color: var(--line-hi);
  color: var(--text);
}
.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn--light {
  background: var(--p-black);
  color: var(--accent);
}
.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -12px rgb(7 6 22 / 0.7);
}

/* shared small parts */
.tag {
  display: inline-flex;
  align-items: center;
  min-height: 26px;
  padding: 0 10px;
  border: 1px solid var(--line-hi);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  white-space: nowrap;
  color: var(--muted);
}
.tag--amber {
  border-color: rgb(255 200 87 / 0.55);
  background: rgb(255 200 87 / 0.12);
  color: var(--amber);
}
.label {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 18px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.label span {
  padding: 3px 9px;
  border-radius: 6px;
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.lead {
  color: var(--muted);
  font-size: 1.125rem;
  max-width: 46ch;
}
.fine {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.go {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--c, var(--accent));
}
.go .i {
  transition: transform var(--dur) var(--ease);
}
a:hover > .go .i,
.go:hover .i {
  transform: translate(3px, -1px);
}
.spot {
  position: relative;
  overflow: hidden;
}
.spot::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    440px circle at var(--mx, 50%) var(--my, 0%),
    color-mix(in srgb, var(--c, var(--accent)) 18%, transparent),
    transparent 62%
  );
  opacity: 0;
  transition: opacity 300ms var(--ease);
  pointer-events: none;
}
.spot:hover::before {
  opacity: 1;
}

/* ticker */
.ticker {
  position: relative;
  border-block: 1px solid var(--line-hi);
  background: var(--bg-alt);
  overflow: hidden;
}
.ticker-track {
  display: flex;
  align-items: center;
  gap: 28px;
  width: max-content;
  padding: 16px 0;
  animation: marquee 38s linear infinite;
}
.ticker:hover .ticker-track {
  animation-play-state: paused;
}
.ticker span {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.7rem);
  font-weight: 700;
  text-transform: uppercase;
  white-space: nowrap;
}
.ticker .is-out {
  color: transparent;
  -webkit-text-stroke: 1px var(--text);
}
.ticker .i {
  width: 20px;
  height: 20px;
  fill: var(--accent);
  stroke: none;
}
@keyframes marquee {
  to {
    transform: translateX(-50%);
  }
}

/* sections */
.section {
  padding-block: clamp(72px, 9vw, 128px);
  position: relative;
}
.section--panel {
  background: var(--bg-alt);
  border-block: 1px solid var(--line);
}
.head {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.85fr);
  gap: 24px 56px;
  align-items: end;
  margin-bottom: clamp(36px, 5vw, 60px);
}
h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.75rem, 4.1vw, 3.5rem);
  line-height: 1.06;
  letter-spacing: -0.03em;
  text-wrap: balance;
}
.hl {
  display: block;
  color: var(--accent);
}
h3 {
  font-family: var(--font-display);
  font-weight: 500;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

/* paths */
.paths {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.path {
  display: flex;
  flex-direction: column;
  min-height: 360px;
  padding: 26px;
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  background: var(--card-bg);
  cursor: pointer;
  transition:
    transform 320ms var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow 320ms var(--ease);
}
.path:hover {
  transform: translateY(-8px);
  border-color: var(--c);
  box-shadow: 0 30px 70px -30px color-mix(in srgb, var(--c) 70%, transparent);
}
.path-num {
  position: absolute;
  right: 18px;
  top: 4px;
  font-family: var(--font-display);
  font-size: 5.6rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px color-mix(in srgb, var(--c) 55%, transparent);
  transition: -webkit-text-stroke-color var(--dur) var(--ease);
}
.path:hover .path-num {
  -webkit-text-stroke-color: var(--c);
}
.path-ico,
.cell-ico {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 15px;
  background: var(--c);
  color: var(--on-accent);
}
.path-ico .i,
.cell-ico .i {
  width: 26px;
  height: 26px;
}
.path-tag {
  margin-top: auto;
  padding-top: 56px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c);
}
.path h3 {
  margin-top: 10px;
  font-size: clamp(1.3rem, 2vw, 1.65rem);
  font-weight: 700;
}
.path p {
  margin-top: 12px;
  color: var(--muted);
}
.path .go {
  margin-top: 16px;
}

/* courses */
.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 26px;
}
.chip {
  min-height: 44px;
  padding: 0 18px;
  border: 1px solid var(--line-hi);
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
  transition:
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.chip:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.chip:active {
  transform: scale(0.96);
}
.chip[aria-pressed='true'] {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.courses {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
}
.course {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  background: var(--card-bg);
  transition:
    transform 320ms var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow 320ms var(--ease);
}
.course[hidden] {
  display: none;
}
.course:not(.course--note):hover {
  transform: translateY(-6px);
  border-color: var(--c);
  box-shadow: 0 26px 60px -30px color-mix(in srgb, var(--c) 70%, transparent);
}
.course.is-pop {
  animation: pop 420ms var(--ease) both;
}
@keyframes pop {
  from {
    opacity: 0;
    transform: translateY(14px) scale(0.97);
  }
}
.course-art {
  position: relative;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  height: 150px;
  padding: 16px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(260px circle at 85% -10%, color-mix(in srgb, var(--c) 42%, transparent), transparent 70%),
    linear-gradient(var(--line) 1px, transparent 1px) 0 0 / 24px 24px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0 / 24px 24px,
    var(--surface-hi);
}
.course-art > .i {
  width: 34px;
  height: 34px;
  color: var(--c);
}
.course-num {
  position: absolute;
  left: 16px;
  top: 8px;
  font-family: var(--font-display);
  font-size: 3.6rem;
  font-weight: 900;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1.5px color-mix(in srgb, var(--c) 70%, transparent);
}
.course-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 22px;
}
.course-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--c);
}
.course h3 {
  margin-top: 10px;
  font-size: 1.15rem;
  font-weight: 700;
}
.course-body > p:not(.course-meta) {
  margin-top: 10px;
  color: var(--muted);
}
.course-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 18px;
}
.free {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
}
.course--note {
  justify-content: center;
  gap: 12px;
  padding: 26px;
  border-style: dashed;
  border-color: rgb(255 200 87 / 0.5);
  background: rgb(255 200 87 / 0.06);
}
.course--note .i {
  width: 30px;
  height: 30px;
  color: var(--amber);
}
.course--note p {
  color: var(--muted);
}
.count {
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--muted);
}

/* dialog */
.dialog {
  width: min(580px, calc(100% - 32px));
  max-height: calc(100dvh - 32px);
  padding: clamp(24px, 4vw, 36px);
  border: 1px solid var(--accent);
  border-radius: var(--r-lg);
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 0 80px -10px rgb(94 235 255 / 0.35);
}
.dialog[open] {
  animation: pop 320ms var(--ease);
}
.dialog::backdrop {
  background: rgb(4 3 14 / 0.78);
  backdrop-filter: blur(6px);
}
.dialog h2 {
  font-size: clamp(1.35rem, 3vw, 1.8rem);
}
.dialog .label {
  padding-right: 52px;
  min-height: 44px;
  margin-bottom: 10px;
}
.dialog > p:not(.label) {
  margin-top: 14px;
  color: var(--muted);
}
.dialog h3 {
  margin-top: 24px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}
.dialog-x {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line-hi);
  border-radius: 50%;
}
.dialog-x:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.modules {
  counter-reset: m;
  margin-top: 12px;
}
.modules li {
  counter-increment: m;
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}
.modules li::before {
  content: '0' counter(m);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
  padding-top: 3px;
}
.dialog-foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  margin-top: 24px;
}

/* journey */
.steps {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 18px;
  padding-top: 34px;
}
.steps::before {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 9px;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--cyan), var(--violet-hi), var(--amber));
  transform: scaleX(var(--line-scale, 1));
  transform-origin: 0 50%;
  transition: transform 1400ms var(--ease);
}
.js .steps:not(.is-drawn) {
  --line-scale: 0;
}
.step {
  position: relative;
  padding: 26px;
  border: 1px solid var(--card-border);
  border-radius: var(--r-lg);
  background: var(--card-bg);
  transition:
    border-color var(--dur) var(--ease),
    transform 320ms var(--ease);
}
.step:hover {
  border-color: var(--c);
  transform: translateY(-6px);
}
.step-dot {
  position: absolute;
  left: 26px;
  top: -34px;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--c);
  box-shadow: 0 0 0 6px var(--bg-alt), 0 0 24px var(--c);
}
.step-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}
.step h3 {
  margin-top: 14px;
  font-size: clamp(1.6rem, 2.6vw, 2.2rem);
  font-weight: 900;
  text-transform: uppercase;
  color: var(--c);
}
.step p {
  margin-top: 12px;
  color: var(--muted);
}

/* split layouts */
.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: clamp(32px, 6vw, 84px);
  align-items: center;
}
.split--rev .split-copy {
  order: 2;
}
.split-copy .lead {
  margin-top: 20px;
}
.split-copy .btn {
  margin-top: 30px;
}
.ticks {
  display: grid;
  gap: 12px;
  margin-top: 26px;
}
.ticks li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.ticks .i {
  margin-top: 4px;
  color: var(--accent);
}

/* lab */
.lab {
  box-shadow:
    0 0 0 1px rgb(0 0 0 / 0.4),
    0 40px 80px -30px rgb(94 235 255 / 0.3);
}
.lab-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px 16px;
  flex-wrap: wrap;
  padding: 16px 18px;
  font-size: 0.95rem;
}
.lab-main {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 14px;
  padding: 0 18px;
}
.lab-chart {
  width: 100%;
  height: 100%;
  min-height: 210px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--bg);
}
.lab-grid {
  stroke: var(--line);
  fill: none;
}
.lab-area {
  fill: url(#lab-fill);
}
.lab-line {
  fill: none;
  stroke: var(--accent);
  stroke-width: 2.5;
  stroke-linejoin: round;
  vector-effect: non-scaling-stroke;
  stroke-dasharray: 1;
  stroke-dashoffset: 0;
}
.lab-line--b {
  stroke: var(--violet-hi);
  stroke-width: 2;
}
.js .lab:not(.is-in) .lab-line {
  stroke-dashoffset: 1;
}
.lab.is-in .lab-line {
  transition: stroke-dashoffset 2200ms var(--ease) 200ms;
}
.lab-pin {
  fill: var(--accent);
  animation: blink 1.6s ease-in-out infinite;
}
@keyframes blink {
  50% {
    opacity: 0.25;
  }
}
.lab-risk {
  display: grid;
  gap: 10px;
}
.lab-risk div {
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: var(--bg);
}
.lab-risk dt {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.lab-risk dd {
  font-weight: 700;
  color: var(--accent);
}
.lab figcaption {
  padding: 14px 18px 18px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ladder */
.ladder {
  padding: clamp(22px, 3vw, 32px);
  border: 1px solid var(--line-hi);
  border-radius: var(--r-lg);
  background: var(--surface);
}
.ladder-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
}
.ladder-head h3 {
  font-size: 1.1rem;
}
.ladder-head .i {
  width: 26px;
  height: 26px;
  color: var(--accent);
}
.ladder ol {
  display: grid;
  gap: 10px;
}
.ladder li {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 58px;
  padding: 10px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface-hi);
  font-weight: 500;
  transition:
    transform var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}
.ladder li:nth-child(2) {
  margin-left: 5%;
}
.ladder li:nth-child(3) {
  margin-left: 10%;
}
.ladder li:nth-child(4) {
  margin-left: 15%;
}
.ladder li:nth-child(5) {
  margin-left: 20%;
}
.ladder li:hover {
  transform: translateX(6px);
  border-color: var(--accent);
}
.ladder li span {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent);
}
.ladder .is-goal {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--on-accent);
  font-weight: 700;
}
.ladder .is-goal span {
  color: var(--on-accent);
}

/* mission */
.langs {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
.langs li {
  display: grid;
  gap: 2px;
  padding: 12px 20px;
  border: 1px solid var(--line-hi);
  border-radius: var(--r-md);
  background: var(--surface);
}
.langs li:first-child {
  border-color: var(--accent);
}
.langs b {
  font-size: 1.25rem;
  line-height: 1.4;
}
.langs small {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
}
.langs li:first-child small {
  color: var(--accent);
}
.globe-card {
  position: relative;
  display: grid;
  place-items: center;
  padding: clamp(20px, 4vw, 44px);
  border: 1px solid var(--line-hi);
  border-radius: var(--r-lg);
  background:
    radial-gradient(60% 60% at 50% 45%, rgb(139 108 255 / 0.35), transparent 70%),
    var(--surface);
  overflow: hidden;
}
.globe {
  width: min(100%, 400px);
  fill: none;
  stroke: var(--violet-hi);
  stroke-width: 1.4;
}
.globe .spin {
  transform-origin: 200px 200px;
  animation: meridian 9s ease-in-out infinite alternate;
}
.globe .spin--b {
  animation-duration: 13s;
  animation-direction: alternate-reverse;
}
@keyframes meridian {
  from {
    transform: scaleX(1);
  }
  to {
    transform: scaleX(-1);
  }
}
.globe-dots circle {
  fill: var(--accent);
  stroke: none;
  animation: blink 2.4s ease-in-out infinite;
}
.globe-dots circle:nth-child(2n) {
  animation-delay: 0.8s;
}
.globe-links {
  stroke: var(--accent);
  stroke-dasharray: 5 7;
  animation: dash 16s linear infinite;
}
@keyframes dash {
  to {
    stroke-dashoffset: -240;
  }
}
.globe-card p {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* faq */
.faq {
  display: grid;
  grid-template-columns: minmax(0, 0.8fr) minmax(0, 1.2fr);
  gap: clamp(28px, 6vw, 84px);
  align-items: start;
}
.faq-copy .lead {
  margin-top: 20px;
}
.faq-list {
  display: grid;
  gap: 12px;
}
.faq-list details {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--surface);
  transition: border-color var(--dur) var(--ease);
}
.faq-list details[open],
.faq-list details:hover {
  border-color: var(--accent);
}
.faq-list summary {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 68px;
  padding: 14px 20px;
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  list-style: none;
}
.faq-list summary::-webkit-details-marker {
  display: none;
}
.faq-list summary span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent);
}
.faq-list summary .i {
  margin-left: auto;
  width: 22px;
  height: 22px;
  color: var(--accent);
  transition: transform var(--dur) var(--ease);
}
.faq-list details[open] summary .i {
  transform: rotate(45deg);
}
.faq-list details p {
  padding: 0 20px 20px 58px;
  color: var(--muted);
}

/* final cta */
.cta {
  background: var(--accent);
  color: var(--on-accent);
  padding-block: clamp(64px, 8vw, 112px);
  --focus: var(--p-black);
}
.cta-in {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  gap: 32px 56px;
  align-items: end;
}
.cta h2 {
  font-size: clamp(2.2rem, 6.4vw, 5.4rem);
  font-weight: 900;
  line-height: 0.98;
  text-transform: uppercase;
}
.cta h2 span {
  display: block;
  color: transparent;
  -webkit-text-stroke: 0.025em var(--on-accent);
}
.cta-side p {
  font-size: 1.15rem;
  font-weight: 500;
  margin-bottom: 22px;
  max-width: 32ch;
}

/* footer */
.footer {
  padding: clamp(56px, 7vw, 88px) 0 96px;
  background: var(--bg);
  overflow: hidden;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(3, minmax(0, 0.7fr));
  gap: 36px;
}
.footer-brand p {
  margin-top: 18px;
  color: var(--muted);
  max-width: 44ch;
  font-size: 0.95rem;
}
.footer-brand .powered {
  font-family: var(--font-mono);
  font-size: 0.8rem;
}
.powered b {
  color: var(--accent);
}
.footer-col {
  display: grid;
  align-content: start;
  gap: 4px;
}
.footer-col h2 {
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}
.footer-col a {
  min-height: 40px;
  display: flex;
  align-items: center;
  color: var(--muted);
  transition: color var(--dur) var(--ease);
}
.footer-col a:hover {
  color: var(--text);
}
.footer-word {
  margin-top: clamp(28px, 5vw, 56px);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: min(16vw, 13.8rem);
  line-height: 0.9;
  letter-spacing: -0.03em;
  white-space: nowrap;
  color: transparent;
  -webkit-text-stroke: 1.5px var(--line-hi);
  user-select: none;
}
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: 10px 32px;
  flex-wrap: wrap;
  margin-top: 28px;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}

/* design switcher */
.switch {
  position: fixed;
  right: 16px;
  bottom: 16px;
  z-index: 90;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-height: 46px;
  padding: 0 16px;
  border: 1px solid var(--line-hi);
  border-radius: var(--r-pill);
  background: rgb(20 18 48 / 0.92);
  backdrop-filter: blur(10px);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
  box-shadow: 0 16px 40px -12px rgb(0 0 0 / 0.8);
  transition:
    border-color var(--dur) var(--ease),
    transform var(--dur) var(--ease);
}
.switch b {
  color: var(--accent);
}
.switch .i {
  color: var(--accent);
}
.switch:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}

/* reveal */
.js [data-reveal] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 700ms var(--ease) var(--d, 0ms),
    transform 700ms var(--ease) var(--d, 0ms);
}
.js [data-reveal].is-in {
  opacity: 1;
  transform: none;
}
.js .path[data-reveal].is-in:hover,
.js .step[data-reveal].is-in:hover {
  transform: translateY(-8px);
  transition-delay: 0ms;
  transition-duration: 320ms;
}
.js .cell[data-reveal].is-in:hover {
  transform: translateY(-4px);
  transition-delay: 0ms;
  transition-duration: 320ms;
}

/* responsive */
@media (max-width: 1100px) {
  .nav,
  .header-cta {
    display: none;
  }
  .menu-btn {
    display: grid;
  }
  .courses,
  .paths {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .paths .path:last-child {
    grid-column: 1 / -1;
    min-height: 0;
  }
  .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    row-gap: 52px;
  }
  .steps::before {
    display: none;
  }
  .step-dot {
    box-shadow: 0 0 24px var(--c);
  }
}
@media (max-width: 900px) {
  .head,
  .hero-row,
  .split,
  .faq,
  .cta-in {
    grid-template-columns: minmax(0, 1fr);
  }
  .split--rev .split-copy {
    order: 0;
  }
  .hero-body {
    max-width: 46ch;
  }
  .bento {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .cell,
  .cell--wide {
    grid-column: span 1;
  }
  .cell--wide,
  .bento .cell:last-child {
    grid-column: 1 / -1;
  }
  .footer-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
}
@media (max-width: 640px) {
  body {
    font-size: 1rem;
  }
  .strip {
    font-size: 0.6875rem;
    gap: 6px 12px;
  }
  .strip-extra {
    display: none;
  }
  .h-line--3 > span {
    -webkit-text-stroke-width: 1.2px;
  }
  .hero-actions .btn {
    flex: 1 1 100%;
  }
  .glow {
    width: 300px;
    height: 300px;
    opacity: 0.32;
    filter: blur(70px);
  }
  .paths,
  .courses,
  .bento,
  .steps,
  .lab-main {
    grid-template-columns: minmax(0, 1fr);
  }
  .cell,
  .cell--wide {
    grid-column: auto;
    min-height: 0;
  }
  .path {
    min-height: 0;
  }
  .path-tag {
    padding-top: 36px;
  }
  .cell-art {
    width: 40%;
    opacity: 0.28;
  }
  .lab-risk {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .lab-chart {
    min-height: 170px;
  }
  .ladder li:nth-child(n) {
    margin-left: 0;
  }
  .faq-list details p {
    padding-left: 20px;
  }
  .footer-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .switch {
    right: 10px;
    bottom: 10px;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation: none !important;
    transition-duration: 0.01ms !important;
  }
  .js [data-reveal] {
    opacity: 1;
    transform: none;
  }
  .js .steps:not(.is-drawn) {
    --line-scale: 1;
  }
  .js .lab:not(.is-in) .lab-line {
    stroke-dashoffset: 0;
  }
}

/* =====================================================================
   Aurora layer: glass surfaces, gradient type, orbit hero, discipline tabs
   ===================================================================== */
body::before {
  content: '';
  position: fixed;
  inset: -20%;
  z-index: -1;
  background:
    radial-gradient(38% 34% at 18% 12%, rgb(139 108 255 / 0.46), transparent 70%),
    radial-gradient(34% 30% at 84% 22%, rgb(94 235 255 / 0.28), transparent 70%),
    radial-gradient(40% 36% at 70% 88%, rgb(255 111 216 / 0.26), transparent 70%),
    radial-gradient(36% 32% at 12% 80%, rgb(94 235 255 / 0.18), transparent 70%);
  pointer-events: none; /* static on purpose: a moving backdrop under frosted panels is costly to repaint */
}

/* glass */
.path,
.course,
.step,
.ladder,
.lab,
.globe-card,
.faq-list details,
.disc,
.langs li,
.kicker {
  background: linear-gradient(160deg, rgb(255 255 255 / 0.1), rgb(255 255 255 / 0.03));
  border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(18px) saturate(1.3);
  backdrop-filter: blur(18px) saturate(1.3);
  box-shadow:
    inset 0 1px 0 rgb(255 255 255 / 0.16),
    0 30px 60px -40px rgb(0 0 0 / 0.85);
}
.section--panel {
  background: rgb(255 255 255 / 0.028);
}
.header {
  background: rgb(7 6 22 / 0.6);
}

/* type */
h2 {
  font-weight: 800;
  letter-spacing: -0.04em;
}
h3 {
  font-weight: 600;
}
.hl,
.grad {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  padding-bottom: 0.08em;
}
.label span,
.strip,
.logo-mark,
.chip[aria-pressed='true'],
.ladder .is-goal {
  background: var(--grad);
  border-color: transparent;
  color: var(--on-accent);
}
.logo-word small {
  color: var(--p-cyan);
}
.strip a:hover {
  background: var(--on-accent);
  color: var(--p-white);
}

/* buttons */
.btn--primary {
  background: var(--grad);
  background-size: 180% 100%;
  color: var(--on-accent);
  box-shadow: 0 10px 30px -12px rgb(139 108 255 / 0.9);
  transition:
    transform var(--dur) var(--ease),
    box-shadow var(--dur) var(--ease),
    background-position 500ms var(--ease);
}
.btn--primary:hover {
  background-position: 100% 0;
  transform: translateY(-2px);
  box-shadow:
    0 0 0 5px rgb(139 108 255 / 0.2),
    0 18px 44px -12px rgb(255 111 216 / 0.75);
}
.btn--ghost {
  background: rgb(255 255 255 / 0.06);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}
.btn--light {
  background: var(--p-black);
  color: var(--p-white);
}
.btn--light:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 36px -12px rgb(7 6 22 / 0.7);
}

/* hero */
.hero {
  position: relative;
  padding-top: clamp(36px, 5vw, 64px);
  text-align: center;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  left: 50%;
  top: -12%;
  width: min(1100px, 120%);
  aspect-ratio: 1.6;
  transform: translateX(-50%);
  background:
    radial-gradient(42% 46% at 32% 40%, rgb(139 108 255 / 0.55), transparent 72%),
    radial-gradient(38% 42% at 70% 46%, rgb(255 111 216 / 0.34), transparent 72%),
    radial-gradient(30% 34% at 52% 70%, rgb(94 235 255 / 0.3), transparent 72%);
  pointer-events: none;
}
.hero-in {
  position: relative;
  display: grid;
  justify-items: center;
}
.kicker {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(18px, 2.4vw, 28px);
  padding: 9px 18px;
  border-radius: var(--r-pill);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.pulse {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--p-mint);
  animation: pulse 1.8s infinite;
}
@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgb(124 255 203 / 0.7);
  }
  70%,
  100% {
    box-shadow: 0 0 0 10px rgb(124 255 203 / 0);
  }
}
h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: min(13vw, 7rem);
  line-height: 0.98;
  letter-spacing: -0.055em;
}
h1 span {
  display: block;
}
.js h1 span {
  animation: rise 900ms var(--ease) both;
}
.js h1 span:nth-child(2) {
  animation-delay: 120ms;
}
.js h1 span:nth-child(3) {
  animation-delay: 240ms;
}
@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(0.4em);
  }
}
h1 .grad {
  background-size: 200% 100%;
  animation:
    rise 900ms var(--ease) 120ms both,
    sheen 7s ease-in-out 1s infinite alternate;
}
@keyframes sheen {
  to {
    background-position: 100% 0;
  }
}
.hero-body {
  margin-top: clamp(20px, 2.6vw, 32px);
  font-size: clamp(1.1rem, 1.5vw, 1.3rem);
  color: var(--muted);
  max-width: 52ch;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-top: 28px;
}
.hero-note {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  margin-top: 20px;
  font-size: 0.9rem;
  color: var(--muted);
  text-align: left;
}
.hero-note .i {
  margin-top: 3px;
  color: var(--p-mint);
}

/* orbit stage */
.orbit {
  position: relative;
  width: 100%;
  margin-top: clamp(28px, 4vw, 48px);
  padding-bottom: clamp(44px, 6vw, 80px);
}
.orbit-rings {
  position: relative;
  height: clamp(190px, 26vw, 300px);
  perspective: 900px;
}
.orbit-rings i {
  position: absolute;
  left: 50%;
  top: 50%;
  width: min(92%, 980px);
  aspect-ratio: 1;
  border: 1px solid rgb(255 255 255 / 0.2);
  border-radius: 50%;
  transform: translate(-50%, -50%) rotateX(76deg);
  box-shadow: 0 0 60px rgb(139 108 255 / 0.3) inset;
}
.orbit-rings i:nth-child(2) {
  width: min(66%, 700px);
  border-color: rgb(94 235 255 / 0.45);
  border-style: dashed;
  animation: ring 40s linear infinite;
}
.orbit-rings i:nth-child(3) {
  width: min(40%, 430px);
  border-color: rgb(255 111 216 / 0.5);
}
@keyframes ring {
  to {
    transform: translate(-50%, -50%) rotateX(76deg) rotate(360deg);
  }
}
.core {
  position: absolute;
  left: 50%;
  top: 50%;
  display: grid;
  place-items: center;
  width: clamp(84px, 11vw, 132px);
  aspect-ratio: 1;
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 32% 28%, rgb(255 255 255 / 0.95), transparent 34%),
    conic-gradient(from 210deg, var(--p-cyan), var(--p-violet), var(--p-pink), var(--p-cyan));
  box-shadow:
    0 0 0 10px rgb(255 255 255 / 0.05),
    0 0 90px 10px rgb(139 108 255 / 0.75);
  animation: bob 6s ease-in-out infinite alternate;
}
.core svg {
  width: 46%;
  fill: none;
  stroke: var(--on-accent);
  stroke-width: 3.4;
  stroke-linecap: round;
  stroke-linejoin: round;
}
@keyframes bob {
  to {
    transform: translate(-50%, -58%);
  }
}
.orbit-nodes {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
  margin-top: clamp(-70px, -5vw, -36px);
}
.orbit-nodes a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 64px;
  padding: 10px 20px 10px 12px;
  border: 1px solid var(--line-hi);
  border-radius: var(--r-pill);
  background: linear-gradient(160deg, rgb(52 46 104 / 0.92), rgb(24 21 58 / 0.92));
  text-align: left;
  transition:
    transform 320ms var(--ease),
    border-color var(--dur) var(--ease),
    box-shadow 320ms var(--ease);
  animation: float 5s ease-in-out infinite alternate;
  animation-delay: calc(var(--i) * -1.1s);
}
.orbit-nodes li:nth-child(odd) a {
  margin-top: 22px;
}
@keyframes float {
  to {
    translate: 0 -9px;
  }
}
.orbit-nodes a:hover {
  transform: scale(1.05);
  border-color: var(--c);
  box-shadow: 0 16px 40px -14px var(--c);
}
.orbit-nodes .i {
  width: 42px;
  height: 42px;
  padding: 9px;
  border-radius: 50%;
  background: var(--c);
  color: var(--on-accent);
}
.orbit-nodes span {
  display: grid;
  line-height: 1.2;
}
.orbit-nodes b {
  font-family: var(--font-display);
  font-weight: 600;
}
.orbit-nodes small {
  font-size: 0.8rem;
  color: var(--muted);
}
.orbit-caption {
  margin-top: 26px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ticker */
.ticker {
  background: rgb(255 255 255 / 0.04);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
}
.ticker span {
  font-weight: 600;
  text-transform: none;
  letter-spacing: -0.02em;
}
.ticker .is-out {
  -webkit-text-stroke: 0;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
}
.ticker .i {
  fill: var(--p-pink);
}

/* paths */
.path {
  border-radius: var(--r-lg);
}
.paths .path:nth-child(2) {
  margin-top: 28px;
}
.path-num {
  -webkit-text-stroke: 0;
  background: linear-gradient(180deg, var(--c), transparent 85%);
  -webkit-background-clip: text;
  background-clip: text;
  opacity: 0.55;
}
.path:hover .path-num {
  opacity: 1;
}
.path-ico,
.cell-ico {
  border-radius: 50%;
  box-shadow: 0 0 34px -4px var(--c);
}

/* discipline tabs */
.disc {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.3fr);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.disc-tabs {
  display: grid;
  align-content: start;
  padding: 14px;
  border-right: 1px solid var(--line);
}
.disc-tabs button {
  display: flex;
  align-items: center;
  gap: 16px;
  min-height: 66px;
  padding: 12px 18px;
  border-radius: var(--r-md);
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 600;
  text-align: left;
  color: var(--muted);
  transition:
    background-color var(--dur) var(--ease),
    color var(--dur) var(--ease),
    padding-left var(--dur) var(--ease);
}
.disc-tabs button span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--c);
}
.disc-tabs button:hover {
  color: var(--text);
  padding-left: 24px;
}
.disc-tabs button[aria-selected='true'] {
  background: rgb(255 255 255 / 0.1);
  color: var(--text);
  box-shadow: inset 3px 0 0 var(--c);
}
.disc-panel {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  min-height: 400px;
  padding: clamp(24px, 4vw, 48px);
  overflow: hidden;
  scroll-margin-top: calc(var(--header-h) + 120px);
  background: radial-gradient(70% 90% at 100% 0%, color-mix(in srgb, var(--c) 34%, transparent), transparent 70%);
}
.disc-panel[hidden] {
  display: none;
}
.js .disc-panel:not([hidden]) {
  animation: panel 520ms var(--ease);
}
@keyframes panel {
  from {
    opacity: 0;
    transform: translateY(18px);
  }
}
.disc-panel + .disc-panel {
  border-top: 1px solid var(--line);
}
.js .disc-panel + .disc-panel {
  border-top: 0;
}
.disc-panel h3 {
  margin-top: 26px;
  font-size: clamp(1.5rem, 2.8vw, 2.3rem);
  font-weight: 800;
  letter-spacing: -0.03em;
}
.disc-panel > p {
  margin-top: 12px;
  font-size: 1.1rem;
  color: var(--muted);
  max-width: 44ch;
}
.disc-num {
  position: absolute;
  right: clamp(18px, 3vw, 36px);
  top: 6px;
  font-family: var(--font-display);
  font-size: clamp(5rem, 11vw, 9rem);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.06em;
  background: linear-gradient(180deg, var(--c), transparent 80%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  opacity: 0.6;
  pointer-events: none;
}
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 20px;
}
.tags li {
  padding: 6px 14px;
  border: 1px solid color-mix(in srgb, var(--c) 50%, transparent);
  border-radius: var(--r-pill);
  background: rgb(255 255 255 / 0.05);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c);
}

/* courses */
.course-art {
  background:
    radial-gradient(280px circle at 85% -10%, color-mix(in srgb, var(--c) 55%, transparent), transparent 70%),
    radial-gradient(200px circle at 0% 120%, color-mix(in srgb, var(--c) 28%, transparent), transparent 70%),
    rgb(255 255 255 / 0.04);
}
.course-num {
  -webkit-text-stroke: 0;
  background: linear-gradient(180deg, var(--c), transparent 90%);
  -webkit-background-clip: text;
  background-clip: text;
}
.course--note {
  border-style: dashed;
  border-color: rgb(255 210 122 / 0.5);
}
.dialog {
  background: var(--p-panel);
  border-color: var(--line-hi);
  box-shadow: 0 0 100px -10px rgb(139 108 255 / 0.6);
}

/* journey: rail fills as the section scrolls through */
.steps::before {
  transform: none;
  background: var(--line-hi);
}
.steps::after {
  content: '';
  position: absolute;
  left: 0;
  right: 0;
  top: 9px;
  height: 2px;
  background: var(--grad);
  box-shadow: 0 0 18px rgb(139 108 255 / 0.9);
  transform: scaleX(var(--p, 0));
  transform-origin: 0 50%;
}
.step-dot {
  box-shadow:
    0 0 0 6px var(--p-black),
    0 0 24px var(--c);
}
.step h3 {
  font-weight: 800;
  text-transform: none;
  letter-spacing: -0.04em;
}

/* lab chrome */
.console-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--muted);
}
.console-path {
  margin-right: auto;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.dots {
  display: flex;
  gap: 6px;
}
.dots i {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--p-pink);
}
.dots i:nth-child(2) {
  background: var(--p-amber);
}
.dots i:nth-child(3) {
  background: var(--p-mint);
}
.lab {
  border-radius: var(--r-lg);
  overflow: hidden;
}
.lab-chart,
.lab-risk div {
  background: rgb(7 6 22 / 0.55);
}
.lab-line {
  stroke: var(--p-cyan);
}
.lab-line--b {
  stroke: var(--p-pink);
}
.lab-risk dd {
  color: var(--p-mint);
}

/* ladder: vertical stepper on a glowing rail */
.ladder ol {
  position: relative;
  padding-left: 30px;
}
.ladder ol::before {
  content: '';
  position: absolute;
  left: 8px;
  top: 12px;
  bottom: 12px;
  width: 2px;
  background: var(--grad);
  background-size: 100% 100%;
  box-shadow: 0 0 16px rgb(139 108 255 / 0.9);
}
.ladder li:nth-child(n) {
  position: relative;
  margin-left: 0;
  background: rgb(255 255 255 / 0.06);
}
.ladder li::before {
  content: '';
  position: absolute;
  left: -29px;
  width: 16px;
  height: 16px;
  border: 3px solid var(--p-black);
  border-radius: 50%;
  background: var(--p-cyan);
}
.ladder li.is-goal:nth-child(n) {
  background: var(--grad);
}
.ladder li.is-goal::before {
  background: var(--p-pink);
  box-shadow: 0 0 18px var(--p-pink);
}
.ladder li:hover {
  border-color: var(--p-cyan);
}
.ladder li span,
.ladder-head .i {
  color: var(--p-cyan);
}

/* mission */
.globe-card {
  background:
    radial-gradient(60% 60% at 50% 45%, rgb(139 108 255 / 0.5), transparent 70%),
    linear-gradient(160deg, rgb(255 255 255 / 0.1), rgb(255 255 255 / 0.03));
}
.globe {
  stroke: rgb(255 255 255 / 0.55);
}
.globe-dots circle {
  fill: var(--p-cyan);
}
.globe-links {
  stroke: var(--p-pink);
}
.langs li:first-child {
  border-color: var(--p-cyan);
}

/* faq */
.faq-list details[open],
.faq-list details:hover {
  border-color: var(--p-violet-hi);
}

/* final cta: gradient card */
.cta {
  background: none;
  color: var(--on-accent);
  padding-block: clamp(40px, 6vw, 88px);
}
.cta-in {
  padding: clamp(28px, 6vw, 76px);
  border-radius: clamp(26px, 4vw, 44px);
  background:
    radial-gradient(60% 90% at 0% 0%, rgb(255 255 255 / 0.5), transparent 60%),
    var(--grad);
  box-shadow: 0 50px 110px -50px rgb(139 108 255 / 0.95);
}
.cta h2 {
  text-transform: none;
  letter-spacing: -0.05em;
  font-weight: 800;
}
.cta h2 span {
  color: transparent;
  -webkit-text-stroke: 0.028em var(--on-accent);
}
.footer {
  background: none;
}
.footer-word {
  font-weight: 800;
  letter-spacing: -0.05em;
  font-size: min(20vw, 17rem);
  -webkit-text-stroke: 0;
  background: linear-gradient(180deg, rgb(255 255 255 / 0.2), transparent 90%);
  -webkit-background-clip: text;
  background-clip: text;
}
.switch b,
.switch .i,
.footer-col h2,
.powered b {
  color: var(--p-cyan);
}

@media (max-width: 1100px) {
  .steps::after {
    display: none;
  }
  .paths .path:nth-child(2) {
    margin-top: 0;
  }
}
@media (max-width: 900px) {
  .disc {
    grid-template-columns: minmax(0, 1fr);
  }
  .disc-tabs {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
    overflow-x: auto;
    scrollbar-width: none;
  }
  .disc-tabs button {
    flex: none;
    min-height: 48px;
    padding: 8px 16px;
    font-size: 0.92rem;
    white-space: nowrap;
  }
  .disc-tabs button:hover {
    padding-left: 16px;
  }
  .disc-tabs button[aria-selected='true'] {
    box-shadow: inset 0 -3px 0 var(--c);
  }
  .disc-panel {
    min-height: 320px;
  }
}
@media (max-width: 640px) {
  .orbit-nodes {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 10px;
    margin-top: -30px;
  }
  .orbit-nodes li:nth-child(odd) a {
    margin-top: 0;
  }
  .orbit-nodes a {
    animation: none;
  }
  .hero-actions .btn {
    flex: 1 1 100%;
  }
  .footer-word {
    font-size: 20vw;
  }
}
@media (prefers-reduced-motion: reduce) {
  .steps::after {
    transform: scaleX(1);
  }
}