@import url("https://fonts.googleapis.com/css2?family=DM+Sans:wght@400;500;600;700&family=Fraunces:opsz,wght@9..144,500;9..144,600&display=swap");

footer#footerWrapper {
  display: none;
}

div#fullscreenContainer {
  display: none;
}

:root {
  --navy: #124263;
  --navy-dark: #071f2d;
  --navy-deep: #04151f;
  --cyan: #48dfeb;
  --cyan-soft: #b9f5f4;
  --amber: #f2b84b;
  --paper: #f3f7f6;
  --white: #fff;
  --ink: #091b23;
  --muted: #b8c8ce;
  --line: rgba(255, 255, 255, 0.18);
  --line-cyan: rgba(72, 223, 235, 0.28);
  --serif: "Fraunces", Georgia, serif;
  --display: var(--serif);
  --sans: "DM Sans", "Segoe UI", sans-serif;
  --pad: clamp(1.25rem, 4vw, 5rem);
  --radius: 4px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 5rem;
}

body {
  margin: 0;
  background: var(--navy-dark);
  color: var(--white);
  font-family: var(--sans);
  line-height: 1.6;
  overflow-x: hidden;
}

body.menu-open {
  overflow: hidden;
}

img {
  display: block;
  max-width: 100%;
}

a {
  color: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--white);
  color: var(--ink);
  transform: translateY(-160%);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: fixed;
  z-index: 100;
  top: 0;
  left: 0;
  display: flex;
  width: 100%;
  height: 5rem;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--pad);
  border-bottom: 1px solid rgba(255, 255, 255, 0.14);
  transition:
    background 0.3s ease,
    height 0.3s ease,
    backdrop-filter 0.3s ease;
}

.site-header.scrolled {
  height: 5rem;
  background: rgba(7, 31, 45, 0.88);
  backdrop-filter: blur(16px);
}

.brand {
  display: inline-flex;
  align-items: center;
}

.brand img {
  width: 7.4rem;
  filter: brightness(0) invert(1);
}

.site-nav {
  display: flex;
  align-items: center;
  gap: clamp(0.65rem, 1.25vw, 1.5rem);
}

.site-nav a {
  color: var(--white);
  font-size: 0.78rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  position: relative;
}

.site-nav a:not(.nav-cta)::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.5rem;
  width: 0;
  height: 1px;
  background: var(--cyan);
  transition: width 0.25s ease;
}

.site-nav a:not(.nav-cta):hover::after {
  width: 100%;
}

.nav-cta {
  padding: 0.75rem 1rem;
  background: var(--cyan);
  color: #051217 !important;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border: 1px solid var(--cyan);
  transition:
    transform 0.25s ease,
    background 0.25s ease,
    box-shadow 0.25s ease;
}

.nav-cta:hover {
  background: var(--white);
  border-color: var(--white);
  color: #051217 !important;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(72, 223, 235, 0.4);
}

.menu-toggle {
  display: none;
  width: 3rem;
  height: 3rem;
  padding: 0.8rem;
  border: 0;
  background: transparent;
}

.menu-toggle i , .menu-toggle em{
  display: block;
  width: 100%;
  height: 1px;
  margin: 0.45rem 0;
  background: var(--white);
  transition: transform 180ms ease;
}

.section {
  position: relative;
  padding: clamp(6rem, 11vw, 10rem) var(--pad);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0 0 1.2rem;
  color: var(--cyan);
  font-size: 0.73rem;
  font-weight: 700;
  letter-spacing: 0.22em;
  text-transform: uppercase;
}

.eyebrow::before {
  width: 2.5rem;
  height: 1px;
  background: currentColor;
  content: "";
}

h1,
h2,
h3,
p {
  margin-top: 0;
}

h1,
h2 {
  font-family: var(--serif);
  font-weight: 500;
  line-height: 0.89;
  letter-spacing: -0.045em;
  margin: 0;
}

h1 em,
h2 em {
  color: var(--cyan);
  font-style: normal;
}

h2 {
  margin-bottom: 0;
  font-size: clamp(2.8rem, 5.8vw, 6rem);
  letter-spacing: -0.045em;
}

.button {
  display: inline-flex;
  min-height: 3.4rem;
  align-items: center;
  justify-content: space-between;
  min-width: 13.5rem;
  gap: 2rem;
  padding: 1rem 1.15rem;
  border: 1px solid var(--cyan);
  border-radius: 0;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.13em;
  text-decoration: none;
  transition:
    transform 0.25s,
    background 0.25s,
    color 0.25s,
    box-shadow 0.25s;
}

.button-primary {
  background: var(--cyan);
  color: #06161c;
}

.button-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(72, 223, 235, 0.25);
}

.button-outline {
  background: transparent;
  border-color: var(--cyan);
  color: var(--cyan);
}

.button-outline:hover {
  background: var(--cyan);
  color: #06161c;
  transform: translateY(-3px);
  box-shadow: 0 10px 35px rgba(72, 223, 235, 0.25);
}

.button span {
  font-size: 1.25rem;
}

.hero {
  position: relative;
  display: grid;
  min-height: max(48rem, 100svh);
  grid-template-columns: minmax(0, 1fr);
  grid-template-rows: 1fr auto;
  align-items: end;
  padding: clamp(9rem, 17vh, 12rem) var(--pad) 0;
  overflow: hidden;
  isolation: isolate;
}

.hero-video,
.hero-wash,
.hero-grid {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-video {
  z-index: -4;
  object-fit: cover;
  object-position: center;
  filter: saturate(0.82) contrast(1.06);
  pointer-events: none;
}

.hero-wash {
  z-index: -3;
  background:
    linear-gradient(
      to right,
      rgba(4, 21, 31, 0.98) 0%,
      rgba(4, 21, 31, 0.9) 43%,
      rgba(7, 31, 45, 0.58) 72%,
      rgba(7, 31, 45, 0.25) 100%
    ),
    linear-gradient(to top, rgba(4, 21, 31, 0.98) 0%, transparent 58%);
}

.hero-grid {
  z-index: -2;
  opacity: 0.22;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 6rem 6rem;
  mask-image: linear-gradient(to right, black, transparent 68%);
}

.hero-content {
  max-width: 66rem;
  padding-bottom: clamp(2.5rem, 6vh, 5rem);
}

.hero h1 {
  max-width: 62rem;
  margin-bottom: 1.4rem;
  font-size: clamp(4rem, 7.8vw, 8.2rem);
  letter-spacing: 0;
}

.hero-intro {
  max-width: 38rem;
  margin-bottom: 1.8rem;
  color: var(--cyan-soft);
  font-size: clamp(1.05rem, 1.6vw, 1.35rem);
}

.hero-actions {
  display: flex;
  align-items: center;
}

.hero-briefing {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(24rem, 0.65fr);
  margin-inline: calc(var(--pad) * -1);
  border-top: 1px solid rgba(72, 223, 235, 0.35);
  background: rgba(4, 21, 31, 0.84);
  backdrop-filter: blur(16px);
}

.hero-facts {
  display: grid;
  grid-template-columns: 1.15fr 0.8fr 1fr;
  padding-left: var(--pad);
}

.hero-facts div {
  display: flex;
  min-width: 0;
  flex-direction: column;
  justify-content: center;
  padding: 1.2rem clamp(1rem, 2vw, 2rem) 1.2rem 0;
}

.hero-facts div + div {
  padding-left: clamp(1rem, 2vw, 2rem);
  border-left: 1px solid rgba(255, 255, 255, 0.15);
}

.hero-facts span,
.hero-facts strong {
  display: block;
}

.hero-facts span {
  margin-bottom: 0.3rem;
  color: var(--cyan);
  font-size: 0.61rem;
  font-weight: 700;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.hero-facts strong {
  font-size: clamp(0.78rem, 1vw, 0.92rem);
  line-height: 1.35;
}

.countdown-shell {
  display: flex;
  min-height: 6.75rem;
  align-items: center;
  gap: clamp(1rem, 2vw, 2rem);
  padding: 1rem var(--pad) 1rem clamp(1.5rem, 3vw, 3rem);
  border-left: 1px solid rgba(72, 223, 235, 0.28);
  background: var(--cyan);
  color: var(--navy-deep);
}

.countdown-shell > p {
  margin: 0;
  font-size: 0.65rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.countdown-shell > p span {
  display: block;
  color: var(--navy);
}

.countdown {
  display: flex;
  align-items: center;
  gap: clamp(0.45rem, 1vw, 1rem);
}

.countdown > div {
  min-width: 2.8rem;
  text-align: center;
}

.countdown strong,
.countdown span {
  display: block;
}

.countdown strong {
  font-family: var(--display);
  font-size: clamp(1.6rem, 2.5vw, 2.5rem);
  font-weight: 600;
  line-height: 1;
}

.countdown span {
  font-size: 0.6rem;
  font-weight: 700;
  text-transform: uppercase;
}

.countdown > i , .countdown > em{
  width: 1px;
  height: 2.5rem;
  background: rgba(7, 31, 45, 0.3);
}

.event-live {
  margin: 0;
  font-family: var(--display);
  font-size: 1.6rem;
}

.about {
  background: var(--cyan);
  color: var(--ink);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(3rem, 8vw, 9rem);
}

.about-grid {
  position: absolute;
  inset: 0;
  opacity: 0.16;
  background-image:
    linear-gradient(rgba(18, 66, 99, 0.38) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 66, 99, 0.38) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(135deg, #000, transparent 68%);
}

.about-heading,
.about-story,
.about-proof {
  position: relative;
  z-index: 1;
}

.about-heading {
  align-self: start;
}

.about .eyebrow,
.programme .eyebrow,
.why .eyebrow {
  color: var(--navy);
}

.about h2 {
  font-family: var(--serif);
  font-size: clamp(3.4rem, 6.5vw, 7rem);
  font-weight: 500;
  line-height: 0.9;
  letter-spacing: -0.05em;
  color: var(--navy);
  margin: 0;
}

.about h2 em {
  font-weight: 500;
  color: #fff;
  text-shadow: 0 1px 0 rgba(18, 66, 99, 0.08);
}

.programme h2 em,
.why h2 em {
  color: var(--navy);
}

.about-story {
  padding-top: clamp(2rem, 6vw, 6rem);
}

.about-story p {
  max-width: 35rem;
  color: #173d4c;
}

.about-story .about-lead {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.15vw, 2rem);
  line-height: 1.3;
  color: var(--navy);
  margin-top: 0;
}

.about-format {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  padding: 1.3rem 0;
  border-top: 1px solid rgba(18, 66, 99, 0.25);
  border-bottom: 1px solid rgba(18, 66, 99, 0.25);
  position: relative;
  z-index: 1;
}

.about-format > span {
  margin-right: auto;
  color: var(--navy);
  font-family: var(--display);
  font-size: 1.25rem;
}

.about-format strong {
  font-size: 0.78rem;
  text-transform: uppercase;
}

.about-format i, .about-format em{
  width: 0.3rem;
  height: 0.3rem;
  border-radius: 50%;
  background: var(--amber);
}

.about-proof {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: 1.4fr 0.6fr;
  min-height: clamp(380px, 48vw, 650px);
  background: var(--navy);
}

.about-proof figure {
  margin: 0;
  position: relative;
  overflow: hidden;
}

.about-proof figure:after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    rgba(18, 66, 99, 0.1),
    rgba(18, 66, 99, 0.48)
  );
}

.about-proof img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.82);
  transition: transform 0.7s;
}

.about-proof:hover img {
  transform: scale(1.025);
}

.about-proof figcaption {
  position: absolute;
  z-index: 2;
  bottom: 1.5rem;
  left: 1.5rem;
  right: 1.5rem;
  color: #fff;
  border-top: 1px solid rgba(255, 255, 255, 0.45);
  padding-top: 0.8rem;
  text-transform: uppercase;
  font-size: 0.62rem;
  letter-spacing: 0.15em;
  display: flex;
  justify-content: space-between;
}

.attendance-stat {
  padding: clamp(2rem, 4.5vw, 4.5rem);
  display: flex;
  flex-direction: column;
  justify-content: center;
  color: #fff;
  position: relative;
  overflow: hidden;
}

.attendance-stat:before {
  content: "";
  position: absolute;
  width: 18rem;
  height: 18rem;
  border: 1px solid rgba(72, 223, 235, 0.2);
  border-radius: 50%;
  right: -9rem;
  top: -9rem;
}

.stat-number {
  font-family: var(--serif);
  font-size: clamp(5rem, 10vw, 10rem);
  line-height: 0.8;
  color: var(--cyan);
  letter-spacing: -0.06em;
}

.stat-number sup {
  font-family: var(--sans);
  font-size: 0.2em;
  vertical-align: top;
  position: relative;
  top: 0.25em;
}

.attendance-stat > p {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.5vw, 2.5rem);
  line-height: 1.05;
  margin: 1.2rem 0;
}

.attendance-stat i , .attendance-stat em{
  display: block;
  width: 100%;
  height: 1px;
  background: rgba(255, 255, 255, 0.25);
  margin: 1rem 0 1.5rem;
}

.attendance-stat small {
  color: var(--muted);
  font-size: 0.75rem;
  max-width: 18rem;
}

.speakers {
  background: var(--navy);
}

.split-heading {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(18rem, 0.55fr);
  gap: 5vw;
  align-items: end;
  margin-bottom: clamp(3rem, 6vw, 6rem);
}

.split-heading > p {
  max-width: 32rem;
  margin-bottom: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.speaker-list {
  border-top: 1px solid var(--line);
}

.speaker {
  display: grid;
  min-height: 10rem;
  grid-template-columns: 8rem 1fr auto;
  gap: 2rem;
  align-items: center;
  padding: 1.5rem 1rem; /* slightly padded on horizontal */
  border-bottom: 1px solid var(--line);
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
  border-left: 0 solid var(--cyan);
}

.speaker:hover {
  background: rgba(
    72,
    223,
    235,
    0.05
  ); /* very premium glowing cyan highlight tint */
  border-left: 4px solid var(--cyan);
  padding-left: 1.5rem;
}

.speaker-monogram {
  display: grid;
  width: 6rem;
  aspect-ratio: 1;
  place-items: center;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  color: var(--cyan);
  font-family: var(--display);
  font-size: 1.45rem;
  transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.speaker:hover .speaker-monogram {
  background: var(--cyan);
  color: var(--navy-deep);
  transform: scale(1.06) rotate(6deg);
  box-shadow: 0 0 16px rgba(72, 223, 235, 0.35);
}

.speaker p {
  margin-bottom: 0.35rem;
  color: var(--cyan);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.speaker h3 {
  margin-bottom: 0.25rem;
  font-family: var(--display);
  font-size: clamp(1.8rem, 3vw, 3.5rem);
  font-weight: 500;
  line-height: 1.1;
}

.speaker div > span {
  color: var(--muted);
}

.speaker > strong {
  color: rgba(255, 255, 255, 0.22);
  font-family: var(--display);
  font-size: 2.5rem;
  font-weight: 500;
}

.speaker-tba .speaker-monogram {
  border-style: dashed;
  color: var(--amber);
}

.themes {
  position: relative;
  isolation: isolate;
  display: grid;
  grid-template-columns: minmax(18rem, 0.7fr) minmax(0, 1fr);
  gap: 4rem 8vw;
  overflow: clip;
  background: var(--paper);
  color: var(--ink);
}

.themes::before {
  position: absolute;
  z-index: -1;
  inset: 0;
  background-image:
    linear-gradient(rgba(18, 66, 99, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 66, 99, 0.1) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(135deg, #000 0%, transparent 72%);
  pointer-events: none;
  content: "";
}

.themes .eyebrow {
  color: var(--navy);
}

.themes-intro {
  position: sticky;
  top: 8rem;
  align-self: start;
}

.themes-intro h2 {
  font-size: clamp(2.8rem, 5vw, 5.2rem);
  color: var(--navy);
}

.themes-intro h2 em {
  color: var(--navy-dark);
}

.themes-intro > p:last-child {
  max-width: 30rem;
  margin-top: 2rem;
  color: #456271;
}

.themes-main {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.theme-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.theme-card {
  position: relative;
  isolation: isolate;
  min-height: clamp(280px, 24vw, 440px);
  overflow: hidden;
  background: var(--navy-dark);
  color: var(--white);
  border-radius: var(--radius);
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.theme-card img {
  position: absolute;
  inset: 0;
  z-index: -2;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition:
    transform 0.65s ease,
    filter 0.65s ease;
  filter: saturate(0.65) contrast(1.1) brightness(0.85);
}

.theme-shade {
  position: absolute;
  z-index: -1;
  inset: 0;
  background:
    linear-gradient(
      180deg,
      rgba(4, 21, 31, 0.15) 30%,
      rgba(4, 21, 33, 0.95) 95%
    ),
    linear-gradient(90deg, rgba(4, 21, 33, 0.3) 0%, transparent 100%);
}

.theme-card:before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 4px;
  background: var(--amber);
  transition: width 0.45s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 3;
}

.theme-card:hover img {
  transform: scale(1.045);
  filter: saturate(0.9) contrast(1.1) brightness(0.9);
}

.theme-card:hover:before {
  width: 100%;
}

.theme-index {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 2.6rem;
  height: 2.6rem;
  display: grid;
  place-items: center;
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--amber);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  z-index: 2;
}

.theme-content {
  position: absolute;
  left: clamp(1.25rem, 2.3vw, 2.25rem);
  right: clamp(1.25rem, 2.3vw, 2.25rem);
  bottom: clamp(1.5rem, 2.5vw, 2.5rem);
  z-index: 2;
}

.theme-content h3 {
  margin: 0 0 0.6rem 0;
  color: var(--cyan-soft);
  font-family: var(--display);
  font-size: clamp(1.4rem, 2vw, 2.1rem);
  font-weight: 500;
  line-height: 1.2;
  text-shadow: 0 2px 4px rgba(4, 21, 31, 0.6);
}

.theme-content p {
  margin: 0;
  color: var(--muted);
  font-size: clamp(0.85rem, 1.1vw, 1.05rem);
  line-height: 1.45;
  text-shadow: 0 1px 3px rgba(4, 21, 31, 0.5);
}

.programme {
  background: #e3eeef;
  border-top: 1px solid rgba(18, 66, 99, 0.24);
  position: relative;
  overflow: hidden;
}

.programme-grid-bg {
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: 0.28;
  background-image:
    linear-gradient(rgba(18, 66, 99, 0.1) 1px, transparent 1px),
    linear-gradient(90deg, rgba(18, 66, 99, 0.1) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: linear-gradient(135deg, #000 0%, transparent 55%);
}

.programme-heading,
.programme-day {
  position: relative;
  z-index: 1;
  width: min(1180px, 100%);
  margin-inline: auto;
}

.programme-heading {
  display: grid;
  grid-template-columns: 1.15fr 0.65fr;
  gap: clamp(3rem, 8vw, 9rem);
  align-items: end;
  margin-bottom: clamp(3.5rem, 7vw, 6.5rem);
}

.programme-heading .eyebrow {
  color: var(--navy);
}

.programme-heading h2 {
  font-size: clamp(3.8rem, 7.5vw, 8rem);
  color: var(--navy);
}

.programme-heading h2 em {
  color: var(--cyan);
  font-weight: 500;
}

.programme-intro {
  padding-bottom: 0.7rem;
}

.programme-intro > p {
  color: #52656c;
  font-size: 1rem;
  margin: 0;
  max-width: 31rem;
}

.programme-day {
  border-top: 1px solid rgba(18, 66, 99, 0.22);
}

.programme-item {
  position: relative;
  margin: 0;
  border: 0;
  border-top: 1px solid rgba(18, 66, 99, 0.18);
  background: rgba(255, 255, 255, 0.42);
  color: var(--navy);
  transition:
    background 0.3s,
    border-color 0.3s;
}

.programme-item:last-child {
  border-bottom: 1px solid rgba(18, 66, 99, 0.18);
}

.programme-item summary,
.programme-item-compact,
.programme-break {
  display: grid;
  grid-template-columns: clamp(5rem, 10vw, 8rem) 1fr auto;
  gap: clamp(1.2rem, 3vw, 3rem);
  align-items: start;
  padding: clamp(1.4rem, 2.7vw, 2.3rem);
  list-style: none;
  cursor: pointer;
}

.programme-item summary::-webkit-details-marker {
  display: none;
}

.programme-item summary:hover,
.programme-item[open] summary {
  background: rgba(72, 223, 235, 0.08);
}

.programme-item time {
  font-family: var(--serif);
  font-size: clamp(1.35rem, 2.2vw, 2rem);
  color: var(--navy);
  line-height: 1;
}

.programme-type {
  margin: 0 0 0.45rem;
  color: #56717d;
  font-size: 0.58rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.17em;
}

.programme-item h3 {
  font-family: var(--serif);
  font-weight: 500;
  font-size: clamp(1.45rem, 2.8vw, 2.65rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  margin: 0;
}

.programme-subtitle {
  display: block;
  font-family: var(--serif);
  font-style: italic;
  color: #3b6675;
  font-size: clamp(0.95rem, 1.5vw, 1.25rem);
  margin-top: 0.45rem;
}

.programme-item summary > i , .programme-item summary > em{
  position: relative;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(18, 66, 99, 0.3);
  border-radius: 50%;
  transition:
    background 0.3s,
    border-color 0.3s,
    box-shadow 0.3s;
}

.programme-item summary > i::before,
.programme-item summary > i::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.75rem;
  height: 1px;
  background: var(--navy);
  transform: translate(-50%, -50%);
}

.programme-item summary > i::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 0.3s ease;
}

.programme-item[open] summary > i, .programme-item[open] summary > em{
  background: var(--cyan);
  border-color: var(--cyan);
  box-shadow: 0 0 0 0.3rem rgba(72, 223, 235, 0.14);
}

.programme-item[open] summary > i::after {
  transform: translate(-50%, -50%) rotate(0deg);
}

.programme-detail {
  display: grid;
  grid-template-columns: clamp(5rem, 10vw, 8rem) 1fr auto;
  gap: clamp(1.2rem, 3vw, 3rem);
  padding: 0 clamp(1.4rem, 2.7vw, 2.3rem) clamp(1.8rem, 3vw, 2.8rem);
  background: rgba(72, 223, 235, 0.08);
}

.programme-detail::before {
  content: "";
}

.programme-detail p {
  max-width: 54rem;
  margin: 0;
  color: #405b65;
  font-size: 0.9rem;
  line-height: 1.75;
}

.programme-item-compact {
  cursor: default;
}

.programme-break {
  background: var(--navy);
  color: #fff;
  border-color: var(--navy);
  cursor: default;
}

.programme-break time,
.programme-break .programme-type {
  color: var(--cyan);
}

.programme-break .programme-subtitle {
  color: #d8eff2;
}

.programme-break h3 {
  font-size: clamp(1.35rem, 2.3vw, 2rem);
}

.programme-break > span {
  align-self: center;
  border: 1px solid rgba(72, 223, 235, 0.4);
  padding: 0.45rem 0.7rem;
  color: var(--cyan);
  font-size: 0.55rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
}

.programme-lunch {
  background: #174f6f;
}

.why {
  display: grid;
  grid-template-columns: minmax(17rem, 0.55fr) minmax(0, 1fr);
  gap: 7vw;
  background: var(--cyan);
  color: var(--ink);
}

.why-heading {
  position: sticky;
  top: 8rem;
  align-self: start;
}

.why-heading h2 {
  font-size: clamp(2.8rem, 5vw, 5.4rem);
}

.why-list {
  margin: 0;
  padding: 0;
  border-top: 1px solid rgba(7, 31, 45, 0.3);
  list-style: none;
}

.why-list li, .why-list em{
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1rem;
  padding: 1.6rem 0;
  border-bottom: 1px solid rgba(7, 31, 45, 0.3);
}

.why-list li > span {
  color: var(--navy);
  font-size: 0.7rem;
  font-weight: 700;
}

.why-list h3 {
  margin-bottom: 0.35rem;
  font-family: var(--display);
  font-size: clamp(1.4rem, 2.2vw, 2.2rem);
  font-weight: 600;
  line-height: 1.2;
}

.why-list p {
  max-width: 42rem;
  margin-bottom: 0;
  color: #264958;
}

.venue {
  display: grid;
  grid-template-columns: minmax(18rem, 0.65fr) minmax(0, 1fr);
  min-height: 42rem;
  gap: 6vw;
  align-items: center;
  background: var(--navy);
}

.venue h2 {
  font-size: clamp(3rem, 6vw, 6rem);
}

.venue-address {
  margin: 2rem 0;
  color: var(--muted);
}

.venue-address strong {
  color: var(--white);
}

.venue-visual {
  position: relative;
  min-height: 32rem;
  margin: 0;
  overflow: hidden;
  border: 1px solid rgba(72, 223, 235, 0.32);
  background: #0b2435;
}

#venue-map {
  width: 100%;
  height: 100%;
  min-height: inherit;
}

.venue-map-label {
  position: absolute;
  z-index: 1;
  right: 1rem;
  bottom: 1rem;
  margin: 0;
  padding: 0.7rem 0.85rem;
  border: 1px solid rgba(72, 223, 235, 0.28);
  background: rgba(7, 31, 45, 0.88);
  color: var(--white);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  pointer-events: none;
}

.venue-map-label span {
  display: block;
  margin-top: 0.18rem;
  color: var(--cyan);
  font-size: 0.58rem;
  font-weight: 500;
}

.register {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 2rem 5vw;
  align-items: end;
  overflow: hidden;
  background: var(--navy-deep);
}

.register::before {
  position: absolute;
  inset: 0;
  opacity: 0.13;
  background-image:
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: 5rem 5rem;
  content: "";
}

.register > * {
  position: relative;
}

.register-axis {
  grid-column: 1 / -1;
  max-width: 20rem;
}

.register-copy {
  max-width: 65rem;
}

.register h2 {
  font-size: clamp(3.1rem, 6.5vw, 7rem);
}

.register-copy > p:last-child {
  max-width: 42rem;
  margin: 2rem 0 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.register-note {
  grid-column: 1 / -1;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  margin-bottom: 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.register-note span {
  padding: 0 0.55rem;
  color: var(--amber);
}

.site-footer {
  display: flex;
  min-height: 7rem;
  align-items: center;
  gap: 2rem;
  padding: 1.5rem var(--pad);
  border-top: 1px solid var(--line);
  background: var(--navy-deep);
  color: var(--muted);
  font-size: 0.78rem;
}

.site-footer p {
  margin: 0 auto 0 0;
}

.site-footer > a:last-child {
  color: var(--cyan);
  text-decoration: none;
}

.observe {
  opacity: 0;
  transform: translateY(1.5rem);
  transition:
    opacity 600ms ease,
    transform 600ms ease;
}

.observe.in-view {
  opacity: 1;
  transform: translateY(0);
}

.reveal {
  animation: reveal 700ms ease both;
}

.delay-1 {
  animation-delay: 100ms;
}
.delay-2 {
  animation-delay: 180ms;
}
.delay-3 {
  animation-delay: 260ms;
}
.delay-4 {
  animation-delay: 340ms;
}

@keyframes reveal {
  from {
    opacity: 0;
    transform: translateY(1.25rem);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 900px) {
  .menu-toggle {
    z-index: 2;
    display: block;
  }

  .site-nav {
    position: fixed;
    inset: 0;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
    padding: 6rem var(--pad);
    background: var(--navy-deep);
    transform: translateX(100%);
    transition: transform 220ms ease;
  }

  .site-nav.open {
    transform: translateX(0);
  }

  .site-nav a {
    font-family: var(--display);
    font-size: 2rem;
    font-weight: 500;
  }

  .site-nav a:not(.nav-cta)::after {
    display: none;
  }

  .menu-toggle[aria-expanded="true"] i:first-of-type {
    transform: translateY(4px) rotate(45deg);
  }

  .menu-toggle[aria-expanded="true"] i:last-of-type {
    transform: translateY(-4px) rotate(-45deg);
  }

  .hero {
    min-height: 100svh;
    grid-template-columns: 1fr;
    gap: 0;
  }

  .hero-content {
    padding-bottom: 2.5rem;
  }

  .hero-briefing {
    grid-template-columns: 1fr;
  }

  .countdown-shell {
    justify-content: space-between;
    border-top: 1px solid rgba(72, 223, 235, 0.28);
    border-left: 0;
  }

  .about,
  .themes,
  .why,
  .venue {
    grid-template-columns: 1fr;
  }

  .about-story {
    padding-top: 0;
  }

  .about-proof {
    grid-template-columns: 1fr;
    min-height: 0;
  }

  .about-proof figure {
    height: 460px;
  }

  .attendance-stat {
    min-height: 400px;
  }

  .themes-intro,
  .why-heading {
    position: static;
  }

  .venue-visual {
    min-height: 26rem;
  }
}

@media (max-width: 800px) {
  .programme-heading {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .programme-heading h2 {
    font-size: clamp(3.5rem, 14vw, 5.7rem);
  }

  .programme-item summary,
  .programme-item-compact,
  .programme-break {
    grid-template-columns: 4.5rem 1fr;
    padding: 1.5rem 1rem;
    gap: 1rem;
  }

  .programme-item summary > i, .programme-item summary > em,
  .programme-break > span {
    grid-column: 2;
    margin-top: 0.75rem;
  }

  .programme-item summary > i, .programme-item summary > em{
    width: 2.2rem;
    height: 2.2rem;
  }

  .programme-detail {
    grid-template-columns: 4.5rem 1fr;
    padding: 0 1rem 1.7rem;
    gap: 1rem;
  }

  .programme-item h3 {
    font-size: clamp(1.4rem, 7vw, 2rem);
  }
}

@media (max-width: 700px) {
  .site-header {
    height: 4.5rem;
  }

  .brand img {
    width: 6.3rem;
  }

  .hero {
    min-height: 0;
    padding-top: 8.5rem;
  }

  .hero h1 {
    font-size: clamp(3rem, 15vw, 4.6rem);
  }

  .hero-intro {
    max-width: 30rem;
  }

  .hero-actions {
    display: block;
  }

  .hero-actions .button {
    width: 100%;
  }

  .hero-facts {
    grid-template-columns: 1fr;
    padding-inline: var(--pad);
  }

  .hero-facts div + div {
    padding-left: 0;
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    border-left: 0;
  }

  .countdown-shell {
    display: block;
    padding: 1.25rem var(--pad);
  }

  .countdown-shell > p {
    margin-bottom: 1rem;
  }

  .countdown {
    justify-content: space-between;
    gap: 0.3rem;
  }

  .countdown > div {
    min-width: 2.5rem;
  }

  .countdown strong {
    font-size: 1.7rem;
  }

  .about-format {
    display: grid;
    grid-template-columns: 1fr auto 1fr auto 1fr;
  }

  .about-format > span {
    grid-column: 1 / -1;
  }

  .about h2 {
    font-size: clamp(3rem, 12vw, 4.5rem);
  }

  .about-proof figure {
    height: 340px;
  }

  .attendance-stat {
    min-height: 350px;
  }

  .about-story .about-lead {
    font-size: 1.4rem;
  }

  .split-heading {
    grid-template-columns: 1fr;
  }

  .theme-grid {
    grid-template-columns: 1fr;
  }

  .speaker {
    grid-template-columns: 4.5rem 1fr;
    gap: 1rem;
  }

  .speaker-monogram {
    width: 4.25rem;
    font-size: 1rem;
  }

  .speaker > strong {
    display: none;
  }

  .why-list li,
  .theme {
    grid-template-columns: 2.2rem 1fr;
  }

  .venue-visual {
    min-height: 20rem;
  }

  .register {
    grid-template-columns: 1fr;
  }

  .register .button {
    width: 100%;
  }

  .site-footer {
    flex-wrap: wrap;
  }

  .site-footer p {
    order: 3;
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  .observe {
    opacity: 1;
    transform: none;
  }
}

/* --- High-end Scroll Progress Line --- */
.scroll-progress-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: transparent;
  z-index: 10000;
  pointer-events: none;
}

.scroll-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--amber) 100%);
  transition: width 0.1s cubic-bezier(0.16, 1, 0.3, 1);
  box-shadow: 0 0 10px rgba(72, 223, 235, 0.5);
}

/* --- Interactive Ambient Video Play/Pause Toggle --- */
.video-toggle {
  position: absolute;
  top: clamp(6.5rem, 11vh, 8.5rem);
  right: var(--pad);
  z-index: 90;
  display: inline-flex;
  width: 3.5rem;
  height: 3.5rem;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(72, 223, 235, 0.42);
  border-radius: 50%;
  background: rgba(4, 21, 31, 0.65);
  color: var(--cyan);
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  outline: none;
  padding: 0;
}

.video-toggle-pulse {
  position: absolute;
  inset: -4px;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.video-toggle:hover .video-toggle-pulse {
  opacity: 0.3;
  transform: scale(1.18);
}

.video-toggle:focus-visible {
  outline: 3px solid var(--amber);
  outline-offset: 4px;
}

.video-toggle:hover,
.video-toggle.active {
  background: var(--cyan);
  color: var(--navy-deep);
  border-color: var(--cyan);
  box-shadow: 0 0 15px rgba(72, 223, 235, 0.5);
}

.video-toggle svg {
  width: 1.2rem;
  height: 1.2rem;
  transition: transform 0.2s ease;
}

.video-toggle:active {
  transform: translateY(1px);
}

/* Ensure the theme track card elements also have a subtle micro-interaction */
.theme-card {
  transition:
    transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
    box-shadow 0.45s ease;
}

.theme-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(4, 21, 31, 0.4);
}
#speakers .cisi-bio-button {
  display: block;
  width: fit-content;
  margin-top: 18px;
  padding: 10px 16px;
  border: 1px solid #52d7dc;
  border-radius: 2px;
  background: transparent;
  color: #71e5e9;
  font: 600 13px/1.4 Arial, sans-serif;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background .18s ease, color .18s ease;
}
#speakers .cisi-bio-button:hover { background: #52d7dc; color: #092431; }
#speakers .cisi-bio-button:focus-visible,
.cisi-bio .cisi-bio-close:focus-visible { outline: 3px solid #efbf56; outline-offset: 4px; }
dialog.cisi-bio {
  box-sizing: border-box;
  width: min(820px, calc(100% - 40px));
  max-width: 820px;
  max-height: calc(100dvh - 48px);
  margin: auto;
  padding: 48px;
  overflow-y: auto;
  overscroll-behavior: contain;
  border: 1px solid #426272;
  border-top: 4px solid #52d7dc;
  border-radius: 4px;
  background: #0c2c3d;
  color: #f4f7f9;
  box-shadow: 0 24px 90px #0008;
  font: 16px/1.75 Arial, sans-serif;
}
dialog.cisi-bio::backdrop { background: rgb(3 14 22 / .78); backdrop-filter: blur(5px); }
.cisi-bio .cisi-bio-close {
  position: absolute;
  top: 12px;
  right: 12px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  padding: 0;
  border: 1px solid #69828e;
  border-radius: 50%;
  background: transparent;
  color: #fff;
  font: 28px/1 Arial, sans-serif;
  cursor: pointer;
}
.cisi-bio .cisi-bio-close:hover { background: #244959; }
.cisi-bio .cisi-bio-header { display: flex; align-items: center; gap: 24px; padding-bottom: 28px; border-bottom: 1px solid #426272; }
.cisi-bio .cisi-bio-header > div { min-width: 0; }
.cisi-bio .cisi-bio-photo { width: 104px; height: 128px; object-fit: cover; flex: 0 0 auto; border-radius: 2px; }
.cisi-bio .cisi-bio-photo[hidden] { display: none; }
.cisi-bio .cisi-bio-agency { margin: 0 0 10px; color: #71e5e9; font: 700 12px/1.5 Arial, sans-serif; letter-spacing: .08em; text-transform: uppercase; }
.cisi-bio #cisi-bio-name { margin: 0 0 10px; color: #fff; font: 400 clamp(28px, 4vw, 38px)/1.15 Georgia, serif; overflow-wrap: anywhere; }
.cisi-bio .cisi-bio-role { margin: 0; color: #bdcdd6; font: 16px/1.5 Arial, sans-serif; }
.cisi-bio .cisi-bio-copy { padding-top: 24px; }
.cisi-bio .cisi-bio-copy p { margin: 0 0 18px; color: #e0e8ed; font: inherit; }
.cisi-bio .cisi-bio-copy p:last-child { margin-bottom: 0; }
@media (max-width: 600px) {
  dialog.cisi-bio { width: calc(100% - 24px); max-height: calc(100dvh - 24px); padding: 48px 22px 26px; }
  .cisi-bio .cisi-bio-header { align-items: flex-start; flex-direction: column; gap: 18px; }
  .cisi-bio .cisi-bio-photo { width: 80px; height: 96px; }
}
@media (prefers-reduced-motion: reduce) { #speakers .cisi-bio-button { transition: none; } }

.cisi-sponsor { background: var(--white, #fff); border-top: 1px solid #e3e8eb; padding: 64px var(--pad, clamp(1.25rem, 4vw, 5rem)); }
.cisi-sponsor, .cisi-sponsor * { box-sizing: border-box; }
.cisi-sponsor__inner { max-width: 1320px; margin: 0 auto; display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: 64px; }
.cisi-sponsor__intro { text-align: left; }
.cisi-sponsor .cisi-sponsor__eyebrow { display: flex; align-items: center; gap: 12px; margin: 0 0 20px; color: var(--navy, #124263); font: 700 11px/1.5 var(--sans, "DM Sans", "Segoe UI", sans-serif); text-transform: uppercase; letter-spacing: .16em; }
.cisi-sponsor__eyebrow::before { content: ""; width: 32px; height: 2px; background: var(--cyan, #48dfeb); flex: 0 0 auto; }
.cisi-sponsor #cisi-sponsor-title { margin: 0; color: var(--navy-dark, #071f2d); font: 400 clamp(32px, 3.6vw, 52px)/1.1 var(--serif, "Fraunces", Georgia, serif); letter-spacing: -.035em; text-transform: none; }
.cisi-sponsor #cisi-sponsor-title em { color: var(--navy, #124263); font: inherit; font-style: italic; }
.cisi-sponsor__logo { display: flex; align-items: center; justify-content: center; min-height: 180px; padding: 20px 40px; border-left: 1px solid #dce5e9; text-decoration: none; }
.cisi-sponsor__logo svg { display: block; width: 160px; height: auto; max-width: 100%; }
.cisi-sponsor__logo:focus-visible { outline: 3px solid var(--navy, #124263); outline-offset: 6px; }
@media (max-width: 640px) {
  .cisi-sponsor { padding: 40px 24px; }
  .cisi-sponsor__inner { grid-template-columns: 1fr; gap: 28px; }
  .cisi-sponsor__logo { border-left: 0; border-top: 1px solid #dce5e9; min-height: 150px; padding: 24px 0 0; }
  .cisi-sponsor__logo svg { width: 136px; }
}

.programme-item summary > em::before,
.programme-item summary > em::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0.75rem;
  height: 1px;
  background: var(--navy, #124263);
  transform: translate(-50%, -50%);
}
 
.programme-item summary > em::after {
  transform: translate(-50%, -50%) rotate(90deg);
  transition: transform 0.3s ease;
}
 
.programme-item[open] summary > em::after {
  transform: translate(-50%, -50%) rotate(0deg);
}