:root {
  --blue: #1cb2e8;
  --purple: #8c64f9;
  --lilac: #d1ceef;
  --grey: #8a8a8f;
  --white: #fafafa;
  --muted: #6b7280;
  --bg-1: #062a42;
  --bg-2: #031725;
  --grad: linear-gradient(90deg, var(--blue), var(--purple));
  --wrap: 1280px;
  --pad: 80px;
  --f-display: "Oxanium", system-ui, sans-serif;
  --f-body: "Manrope", system-ui, sans-serif;
  --f-mono: "IBM Plex Mono", ui-monospace, monospace;
}
*,
*::before,
*::after {
  box-sizing: border-box;
}
html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}
body {
  margin: 0;
  background: var(--bg-2);
  color: var(--white);
  font-family: var(--f-body);
  font-size: 16px;
  line-height: 1.5;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background: radial-gradient(
    ellipse 80% 70% at 50% 40%,
    var(--bg-1) 0%,
    var(--bg-2) 100%
  );
}
img,
svg,
video {
  display: block;
  max-width: 100%;
}
a {
  color: inherit;
  text-decoration: none;
}
p {
  margin: 0;
}
h1,
h2,
h3 {
  margin: 0;
  font-weight: 600;
}
.wrap {
  max-width: calc(var(--wrap) + var(--pad) * 2);
  margin: 0 auto;
  padding: 0 var(--pad);
}
section {
  scroll-margin-top: 90px;
}

/* ---------- shared ---------- */
.eyebrow {
  font: 600 12px/1.5 var(--f-body);
  color: var(--lilac);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.eyebrow b {
  color: var(--purple);
  font-weight: 600;
}
.h2 {
  font: 600 56px/1.12 var(--f-display);
  color: var(--white);
  margin-top: 20px;
}
.btns {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 28px;
  border-radius: 8px;
  font: 700 15px/1.4 var(--f-body);
  color: var(--white);
  border: 1px solid transparent;
  transition:
    transform 0.2s,
    background-color 0.2s,
    box-shadow 0.2s;
}
.btn span {
  font: 400 16px/1 var(--f-mono);
  transition: transform 0.2s;
}
.btn:hover span {
  transform: translate(2px, -2px);
}
.btn--primary {
  background: var(--blue);
}
.btn--primary:hover {
  box-shadow: 0 8px 28px -8px rgba(28, 178, 232, 0.7);
  transform: translateY(-1px);
}
.btn--ghost {
  background: rgba(250, 250, 250, 0.12);
  border-color: var(--white);
  font-weight: 600;
}
.btn--ghost:hover {
  background: rgba(250, 250, 250, 0.2);
}
.chevrons {
  width: 72px;
  height: 23px;
  color: var(--lilac);
  flex: none;
}
.divider {
  height: 1px;
  background: var(--grad);
  border: 0;
  margin: 0;
}
:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
}

/* ---------- nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  transition:
    background-color 0.3s,
    backdrop-filter 0.3s;
}
.nav.is-scrolled {
  background: rgba(3, 23, 37, 0.78);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
}
.nav__bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 28px 0 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  transition: padding 0.3s;
}
.nav.is-scrolled .nav__bar {
  padding: 16px 0;
}
.nav__logo {
  width: 254px;
  height: auto;
}
.nav__menu {
  display: flex;
  gap: 28px;
  font: 500 14px/normal var(--f-body);
}
.nav__menu a {
  color: var(--white);
  transition: color 0.2s;
}
.nav__menu a:hover {
  color: var(--blue);
}
.nav__menu .nav__cta {
  color: var(--blue);
  font-weight: 700;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.nav__toggle {
  display: none;
  background: none;
  border: 0;
  padding: 8px;
  margin: -8px;
  color: var(--white);
  cursor: pointer;
}
.nav__toggle svg {
  width: 26px;
  height: 26px;
}

/* ---------- hero ---------- */
.hero {
  padding: 48px 0 64px;
}
.pill {
  display: inline-block;
  margin-bottom: 32px;
  padding: 10px 20px;
  border-radius: 40px;
  background: var(--lilac);
  color: var(--purple);
  font: 600 12px/1.4 var(--f-mono);
  text-transform: uppercase;
}
.hero__media {
  position: relative;
  height: 520px;
  border: 1px solid var(--blue);
  border-radius: 20px;
  overflow: hidden;
  background: #0b1a33;
}
.hero__video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: right center;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(13, 10, 30, 0.85) 0%,
    rgba(13, 10, 30, 0.35) 55%,
    rgba(13, 10, 30, 0.1) 100%
  );
  pointer-events: none;
}
.hero__content {
  position: absolute;
  inset: 48px;
  z-index: 1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hero__title {
  max-width: 820px;
  font: 700 100px/1.02 var(--f-display);
  color: var(--white);
  letter-spacing: -0.01em;
}
.hero__bottom {
  display: flex;
  flex-direction: column;
  gap: 54px;
}
.hero__meta {
  font: 600 13px/1.5 var(--f-mono);
  color: var(--blue);
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.hero__intro {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 80px 0 0;
}
.hero__intro p {
  max-width: 560px;
  font-size: 16px;
  line-height: 1.6;
}
.hero__down {
  position: relative;
  flex: none;
  width: 23px;
  height: 72px;
  color: var(--lilac);
  animation: nudge 2.4s ease-in-out infinite;
}
.hero__down svg {
  max-width: none;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%) rotate(90deg);
}
@keyframes nudge {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(8px);
  }
}

/* ---------- about ---------- */
.about {
  padding: 96px 0;
}
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.about__lead {
  padding-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.about__lead .big {
  font-size: 22px;
  color: var(--grey);
}
.stats {
  margin-top: 56px;
}
.stats__row {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 28px 32px;
  padding-top: 24px;
  color: var(--blue);
}
.stat__val {
  font: 500 48px/1.1 var(--f-body);
}
.stat__lbl {
  font-size: 14px;
  margin-top: 8px;
}

/* ---------- topics ---------- */
.topics {
  position: relative;
  padding: 96px 0;
  overflow: hidden;
  isolation: isolate;
}
.topics__bg {
  position: absolute;
  z-index: -1;
  left: 50%;
  top: calc(50% + 70px);
  width: min(680px, 40vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0.55;
  mix-blend-mode: screen;
}
.topics__bg svg {
  width: 100%;
  height: 100%;
  overflow: visible;
}
.topics__bg .r {
  transform-box: view-box;
  transform-origin: 300px 300px;
}
.r1 {
  animation: spin 90s linear infinite;
}
.r2 {
  animation: spin 60s linear infinite reverse;
}
.r3 {
  animation: spin 40s linear infinite;
}
.r4 {
  animation: spin 26s linear infinite reverse;
}
.r5 {
  animation: spin 120s linear infinite reverse;
}
.sweep {
  animation: spin 9s linear infinite;
}
.pulse {
  animation: pulse 5s ease-in-out infinite;
  transform-box: view-box;
  transform-origin: 300px 300px;
}
.blip {
  animation: blip 3.2s ease-in-out infinite;
}
.blip:nth-of-type(2) {
  animation-delay: -1.1s;
}
.blip:nth-of-type(3) {
  animation-delay: -2.2s;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@keyframes pulse {
  0%,
  100% {
    opacity: 0.25;
    transform: scale(0.96);
  }
  50% {
    opacity: 0.6;
    transform: scale(1.04);
  }
}
@keyframes blip {
  0%,
  100% {
    opacity: 0.15;
  }
  50% {
    opacity: 1;
  }
}
.topics__list {
  list-style: none;
  margin: 56px 0 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.topic {
  display: flex;
  flex-direction: column;
  gap: 28px;
}
.topic__body {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}
.topic__icon {
  width: 58px;
  height: 58px;
  flex: none;
  transition: transform 0.3s;
}
.topic:hover .topic__icon {
  transform: translateX(6px);
}
.topic h3 {
  font: 500 28px/1.2 var(--f-display);
  color: var(--blue);
  margin-bottom: 25px;
}
.topic p {
  font-size: 18px;
  color: var(--grey);
}

/* ---------- cta ---------- */
.cta {
  padding: 84px 0;
}
.cta__card {
  position: relative;
  border: 1px solid var(--blue);
  border-radius: 24px;
  padding: 96px 80px;
  background: linear-gradient(
    158deg,
    rgba(28, 178, 232, 0.2) 25%,
    rgba(140, 100, 249, 0.2) 75%
  );
  overflow: hidden;
}
.cta__row {
  display: flex;
  gap: 64px;
  align-items: flex-end;
  justify-content: space-between;
  margin-top: 32px;
}
.cta__title {
  font: 600 72px/1.08 var(--f-display);
  max-width: 651px;
}
.cta__sub {
  display: flex;
  align-items: center;
  gap: 28px;
  margin-top: 28px;
  max-width: 651px;
}
.cta__sub .chevrons {
  color: var(--blue);
}
.cta__sub p {
  font-size: 22px;
  line-height: 1.5;
}
.cta__btns {
  width: 350px;
  flex-direction: column;
  flex: none;
}
.cta__btns .btn {
  width: 100%;
}

/* ---------- program ---------- */
.program {
  padding: 40px 0 0;
  scroll-margin-top: 76px;
}
.program__grid {
  display: grid;
  grid-template-columns: 380px 1fr;
  height: min(900px, calc(100vh - 96px));
  min-height: 560px;
}
.program__aside {
  padding: 64px 0;
  display: flex;
  flex-direction: column;
  gap: 48px;
}
.program__aside .eyebrow {
  font: 700 13px/normal var(--f-body);
}
.program__aside .h2 {
  margin: 0;
  line-height: 1.1;
}
.program__day {
  display: flex;
  flex-direction: column;
  gap: 16px;
  color: var(--blue);
}
.program__day strong {
  font: 600 20px/1.5 var(--f-display);
}
.program__day span {
  font-size: 15px;
}
.program__hint {
  display: flex;
  align-items: center;
  gap: 10px;
  font: 600 11px/1 var(--f-mono);
  color: var(--grey);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: auto;
}
.program__hint i {
  display: block;
  width: 1px;
  height: 28px;
  background: var(--grad);
  animation: hint 1.8s ease-in-out infinite;
}
@keyframes hint {
  0%,
  100% {
    transform: scaleY(0.4);
    transform-origin: top;
  }
  50% {
    transform: scaleY(1);
    transform-origin: top;
  }
}
.program__scroll {
  position: relative;
  min-height: 0;
  overflow-y: auto;
  overscroll-behavior: auto;
  padding: 64px 24px 64px 64px;
  scrollbar-width: thin;
  scrollbar-color: var(--blue) transparent;
  -webkit-mask-image: linear-gradient(
    180deg,
    transparent 0,
    #000 48px,
    #000 calc(100% - 72px),
    transparent 100%
  );
  mask-image: linear-gradient(
    180deg,
    transparent 0,
    #000 48px,
    #000 calc(100% - 72px),
    transparent 100%
  );
}
.program__scroll::-webkit-scrollbar {
  width: 4px;
}
.program__scroll::-webkit-scrollbar-thumb {
  background: var(--grad);
  border-radius: 4px;
}
.program__legend {
  display: flex;
  justify-content: space-between;
  font-size: 12px;
  color: var(--lilac);
  padding-bottom: 24px;
}
.session {
  padding: 32px 0;
  display: flex;
  flex-direction: column;
  gap: 20px;
  border-top: 1px solid transparent;
  border-image: var(--grad) 1;
}
.session__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.session__time {
  font: 600 26px/normal var(--f-body);
  color: var(--lilac);
  font-variant-numeric: tabular-nums;
}
.session__tag {
  border: 1px solid var(--blue);
  padding: 6px 12px;
  font: 600 14px/normal var(--f-body);
  color: var(--blue);
}
.session__tag--key {
  background: var(--blue);
  color: var(--bg-2);
}
.session h3 {
  font: 600 34px/1.18 var(--f-display);
  color: var(--blue);
}
.session__track {
  color: var(--grey);
  margin-top: 8px;
}
.speakers {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.speakers strong {
  display: block;
  font: 600 18px/1.4 var(--f-body);
  color: var(--white);
}
.speakers span {
  display: block;
  font-size: 14px;
  color: var(--grey);
  margin-top: 4px;
}
.program__note {
  border-top: 1px solid var(--blue);
  padding-top: 28px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- speakers ---------- */
.people {
  padding: 96px 0;
}
.people__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 56px 32px;
  margin-top: 56px;
}
.person__img {
  position: relative;
  height: 360px;
  border-radius: 20px;
  padding: 2px;
  background: linear-gradient(180deg, var(--blue), var(--purple));
  overflow: hidden;
}
.person__img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 18px;
  transition: transform 0.6s ease;
}
.person:hover .person__img img {
  transform: scale(1.04);
}
.person__info {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.person h3 {
  font: 500 28px/1.2 var(--f-display);
}
.person__role {
  color: var(--grey);
  line-height: 1.4;
}
.person__org {
  font-size: 14px;
  color: var(--grey);
}

/* ---------- partners ---------- */
.partners {
  padding: 96px 0 0;
}
.tiers {
  margin-top: 40px;
  display: flex;
  flex-direction: column;
  gap: 40px;
}
.tier {
  display: flex;
  align-items: center;
  gap: 32px;
}
.tier__name {
  width: 210px;
  flex: none;
  font: 500 16px/1.5 var(--f-display);
}
.tier__logos {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
}
.logo-box {
  width: 242px;
  height: 65px;
  display: grid;
  place-items: center;
  padding: 12px;
  border: 1px solid var(--blue);
  border-radius: 20px;
  background: linear-gradient(
    180deg,
    rgba(28, 178, 232, 0.2),
    rgba(140, 100, 249, 0.2)
  );
  transition:
    background 0.3s,
    transform 0.3s;
}
.logo-box--sm {
  width: 170px;
  background: linear-gradient(
    180deg,
    rgba(28, 178, 232, 0.15),
    rgba(140, 100, 249, 0.15)
  );
}
.logo-box:hover {
  transform: translateY(-2px);
  background: linear-gradient(
    180deg,
    rgba(28, 178, 232, 0.32),
    rgba(140, 100, 249, 0.32)
  );
}
.logo-box svg,
.logo-box img {
  height: auto;
  max-height: 100%;
}

/* ---------- footer ---------- */
.footer {
  padding: 80px 0 32px;
}
.footer__bar {
  border-top: 1px solid rgba(204, 204, 204, 0.2);
  padding-top: 40px;
  display: flex;
  justify-content: space-between;
  gap: 20px;
  font-size: 12px;
  line-height: 1.5;
}
.footer__ai {
  color: var(--blue);
}
.footer__ai:hover {
  text-decoration: underline;
}
.footer__links {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--lilac);
}
.footer__links a:hover {
  color: var(--white);
}

/* ---------- reveal ---------- */
.js .reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.8s ease,
    transform 0.8s ease;
}
.js .reveal.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */
@media (max-width: 1200px) {
  :root {
    --pad: 48px;
  }
  .hero__title {
    font-size: clamp(56px, 7.4vw, 100px);
  }
  .cta__title {
    font-size: clamp(48px, 5.6vw, 72px);
  }
  .program__grid {
    grid-template-columns: 300px 1fr;
  }
  .tier__logos .logo-box {
    width: 200px;
  }
}
@media (max-width: 960px) {
  :root {
    --pad: 32px;
  }
  .nav__toggle {
    display: block;
  }
  .nav__menu {
    position: absolute;
    left: 0;
    right: 0;
    top: 100%;
    flex-direction: column;
    gap: 0;
    padding: 8px var(--pad) 24px;
    background: rgba(3, 23, 37, 0.96);
    -webkit-backdrop-filter: blur(14px);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 18px;
    display: none;
  }
  .nav.is-open .nav__menu {
    display: flex;
  }
  .nav.is-open {
    background: rgba(3, 23, 37, 0.96);
  }
  .nav__menu a {
    padding: 12px 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  }
  .nav__logo {
    width: 170px;
  }
  .h2 {
    font-size: clamp(36px, 6vw, 56px);
  }
  .about__grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .about__lead {
    padding-top: 0;
  }
  .stats__row {
    grid-template-columns: repeat(2, 1fr);
  }
  .cta__card {
    padding: 56px 32px;
  }
  .cta__row {
    flex-direction: column;
    align-items: stretch;
    gap: 40px;
  }
  .cta__btns {
    width: 100%;
  }
  .program__grid {
    grid-template-columns: 1fr;
    height: auto;
    min-height: 0;
  }
  .program__aside {
    padding: 0 0 24px;
    gap: 24px;
  }
  .program__hint {
    display: none;
  }
  .program__scroll {
    overflow: visible;
    padding: 16px 0 0;
    -webkit-mask-image: none;
    mask-image: none;
  }
  .people__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .tier {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }
}
@media (max-width: 640px) {
  :root {
    --pad: 16px;
  }
  .hero {
    padding-top: 32px;
  }
  .pill {
    font-size: 10px;
    margin-bottom: 24px;
  }
  .hero__media {
    height: auto;
    min-height: 580px;
  }
  .hero__media::after {
    background: linear-gradient(
      0deg,
      rgba(13, 10, 30, 0.92) 0%,
      rgba(13, 10, 30, 0.55) 55%,
      rgba(13, 10, 30, 0.25) 100%
    );
  }
  .hero__video {
    object-position: 78% center;
  }
  .hero__content {
    inset: 28px 20px;
  }
  .hero__title {
    font-size: clamp(44px, 13vw, 64px);
  }
  .hero__bottom {
    gap: 24px;
  }
  .btns {
    flex-direction: column;
  }
  .btns .btn {
    width: 100%;
  }
  .hero__intro {
    padding-right: 0;
    gap: 24px;
  }
  .about,
  .topics,
  .people {
    padding: 64px 0;
  }
  .about__lead .big {
    font-size: 18px;
  }
  .stat__val {
    font-size: 40px;
  }
  .topic__body {
    gap: 14px;
  }
  .topic__icon {
    width: 40px;
    height: 40px;
  }
  .topic h3 {
    font-size: 22px;
    margin-bottom: 12px;
  }
  .topic p {
    font-size: 16px;
  }
  .cta {
    padding: 48px 0;
  }
  .cta__title {
    font-size: clamp(38px, 11vw, 56px);
  }
  .cta__sub {
    gap: 16px;
  }
  .cta__sub p {
    font-size: 18px;
  }
  .session__time {
    font-size: 20px;
  }
  .session h3 {
    font-size: 26px;
  }
  .people__grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .person__img {
    height: auto;
    aspect-ratio: 405/360;
  }
  .tier__logos {
    width: 100%;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
  }
  .tier__logos .logo-box {
    width: 100%;
    padding: 12px 16px;
  }
  .footer__bar {
    flex-direction: column;
  }
}
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
    scroll-behavior: auto !important;
  }
  .js .reveal {
    opacity: 1;
    transform: none;
  }
}

.blue {
  color: var(--blue);
}