:root {
  --blue: #1581ff;
  --sky: #01a3fa;
  --ink: #101820;
  --muted: #65717f;
  --paper: #fafaf8;
  --white: #ffffff;
  --pale: #f1f7fd;
  --line: #dbe6ef;
  --deep: #0d2a47;
  --deep-2: #081e35;
  --max: 1240px;
  --serif: "Newsreader", Georgia, serif;
  --sans: "Manrope", "Segoe UI", Arial, sans-serif;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea { font: inherit; }
::selection { background: rgba(21,129,255,.18); }

.page-progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 3px;
  z-index: 200;
  pointer-events: none;
}
.page-progress span {
  display: block;
  width: 0;
  height: 100%;
  background: linear-gradient(90deg, var(--sky), var(--blue));
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(250,250,248,.88);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid transparent;
  transition: border-color .25s ease, box-shadow .25s ease;
}
.site-header.scrolled {
  border-color: rgba(16,24,32,.08);
  box-shadow: 0 8px 30px rgba(18,40,66,.04);
}
.nav-wrap {
  width: min(calc(100% - 48px), var(--max));
  height: 86px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
}
.brand { width: 205px; flex: 0 0 auto; }
.brand img { width: 100%; height: auto; }
.site-nav { display: flex; align-items: center; gap: 30px; font-size: 14px; font-weight: 600; }
.site-nav a { position: relative; }
.site-nav a:not(.nav-contact)::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: -8px;
  height: 1.5px;
  background: var(--blue);
  transition: right .25s ease;
}
.site-nav a:not(.nav-contact):hover::after { right: 0; }
.nav-contact {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 16px;
  transition: background .2s, color .2s, border-color .2s;
}
.nav-contact:hover { background: var(--blue); color: white; border-color: var(--blue); }
.menu-button { display: none; background: none; border: 0; width: 38px; height: 38px; padding: 8px; cursor: pointer; }
.menu-button span { display: block; height: 1.5px; background: var(--ink); margin: 7px 0; transition: transform .2s; }

.section-pad { padding: 126px max(24px, calc((100vw - var(--max)) / 2)); }
.section-index {
  color: var(--blue);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .16em;
  margin-bottom: 24px;
}
.section-index.light { color: #8dc7ff; }
.section-head {
  display: grid;
  grid-template-columns: 1.4fr .65fr;
  gap: 80px;
  align-items: end;
  margin-bottom: 62px;
}
.section-head h2,
.statement h2,
.route-copy h2,
.programme h2,
.closing h2 {
  margin: 0;
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -.035em;
  line-height: .98;
}
.section-head h2 { max-width: 720px; font-size: clamp(48px, 6vw, 84px); }
.section-head > p { margin: 0 0 6px; color: var(--muted); font-size: 17px; }

.hero { padding-top: 88px; padding-bottom: 120px; min-height: calc(100vh - 86px); display: flex; align-items: center; }
.hero-grid { width: 100%; display: grid; grid-template-columns: 1.05fr .85fr; gap: 80px; align-items: center; }
.eyebrow { color: var(--blue); font-size: 11px; font-weight: 700; letter-spacing: .17em; margin-bottom: 28px; }
.hero h1 {
  margin: 0;
  max-width: 800px;
  font-family: var(--serif);
  font-size: clamp(64px, 7.4vw, 112px);
  line-height: .9;
  font-weight: 400;
  letter-spacing: -.055em;
}
.hero h1 em { color: var(--blue); font-style: normal; }
.hero-intro { max-width: 760px; margin: 38px 0 0; font-size: clamp(19px, 2vw, 24px); line-height: 1.5; color: #27323d; }
.hero-support { max-width: 690px; margin: 18px 0 0; color: var(--muted); font-size: 16px; }
.hero-actions { display: flex; align-items: center; gap: 28px; margin-top: 38px; flex-wrap: wrap; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  padding: 14px 20px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 700;
  transition: transform .2s ease, background .2s ease, color .2s ease, border-color .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--blue); color: white; box-shadow: 0 14px 40px rgba(21,129,255,.22); }
.button.primary:hover { background: #066fdf; }
.button.secondary { border: 1px solid var(--blue); color: var(--blue); background: transparent; }
.button.secondary:hover { background: var(--blue); color: white; }
.button.white { background: white; color: var(--deep); }
.text-link { font-size: 14px; font-weight: 700; border-bottom: 1px solid #a9b4bf; padding-bottom: 4px; }
.text-link:hover { color: var(--blue); border-color: var(--blue); }

.hero-visual { position: relative; min-height: 580px; display: grid; place-items: center; }
.hero-visual svg { width: 100%; position: relative; z-index: 2; }
.visual-glow {
  position: absolute;
  width: 430px;
  height: 430px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(1,163,250,.16), rgba(21,129,255,.05) 50%, transparent 72%);
  filter: blur(10px);
}
.svg-label { font: 700 11px var(--sans); letter-spacing: .15em; fill: var(--blue); }
.svg-title { font: 500 15px var(--sans); fill: var(--ink); }
.svg-footer { font: 700 10px var(--sans); letter-spacing: .13em; fill: #748393; }
.route-line { animation: dash 16s linear infinite; }
.route-line.delay { animation-duration: 24s; animation-direction: reverse; }
@keyframes dash { to { stroke-dashoffset: -500; } }
.pulse-group circle { animation: pulse 2.8s ease-in-out infinite; transform-origin: center; }
.pulse-group circle:nth-child(2) { animation-delay: .5s; }
.pulse-group circle:nth-child(3) { animation-delay: 1s; }
@keyframes pulse { 0%,100% { opacity:.45; r:5; } 50% { opacity:1; r:8; } }

.statement { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); background: white; }
.statement-grid { display: grid; grid-template-columns: .95fr .8fr; gap: 120px; align-items: start; }
.statement h2 { font-size: clamp(62px, 7vw, 102px); }
.statement-copy p { margin: 0 0 24px; font-size: 19px; color: #35414d; }
.statement-copy p:first-child { font-size: 28px; line-height: 1.35; color: var(--ink); }

.pillars { background: var(--paper); }
.pillar-list { border-top: 1px solid var(--line); }
.pillar {
  display: grid;
  grid-template-columns: 110px 1fr 170px;
  gap: 40px;
  align-items: start;
  padding: 44px 0;
  border-bottom: 1px solid var(--line);
  transition: padding-left .25s ease, background .25s ease;
}
.pillar:hover { padding-left: 18px; background: linear-gradient(90deg, rgba(21,129,255,.045), transparent 58%); }
.pillar-number { color: var(--blue); font-size: 13px; font-weight: 700; }
.pillar h3 { margin: 0 0 8px; font-size: 28px; }
.pillar p { max-width: 750px; margin: 0; color: var(--muted); }
.pillar a { justify-self: end; font-size: 13px; font-weight: 700; color: var(--blue); }

.featured-research { background: white; }
.research-grid { display: grid; grid-template-columns: repeat(2, minmax(0,1fr)); gap: 18px; }
.research-card {
  min-height: 340px;
  padding: 34px;
  border: 1px solid var(--line);
  background: #fff;
  display: flex;
  flex-direction: column;
  transition: transform .25s ease, box-shadow .25s ease, border-color .25s ease;
}
.research-card:hover { transform: translateY(-5px); border-color: #b7d5ef; box-shadow: 0 20px 60px rgba(22,62,101,.09); }
.research-card-large { grid-column: 1 / -1; min-height: 430px; background: var(--pale); }
.card-meta { display: flex; justify-content: space-between; gap: 20px; font-size: 10px; font-weight: 700; letter-spacing: .13em; color: #718091; }
.research-card h3 { margin: auto 0 18px; max-width: 980px; font-family: var(--serif); font-weight: 400; font-size: clamp(32px, 4vw, 58px); line-height: 1.03; letter-spacing: -.035em; }
.research-card:not(.research-card-large) h3 { font-size: clamp(29px, 3vw, 42px); }
.research-card p { max-width: 800px; margin: 0 0 28px; color: var(--muted); }
.card-link { margin-top: auto; color: var(--blue); font-size: 13px; font-weight: 700; }
.live-card { background: var(--deep); color: white; border-color: var(--deep); }
.live-card p, .live-card .card-meta { color: #b8c9d9; }
.live-dot { margin-top: 26px; display: flex; align-items: center; gap: 9px; color: #9ed7ff; font-size: 12px; font-weight: 700; }
.live-dot span { width: 8px; height: 8px; border-radius: 50%; background: var(--sky); box-shadow: 0 0 0 7px rgba(1,163,250,.13); }
.commentary-card { background: #fbfdff; }

.route-section { background: var(--pale); }
.route-grid { display: grid; grid-template-columns: .85fr 1fr; gap: 100px; align-items: start; }
.route-copy h2 { font-size: clamp(54px, 6vw, 86px); }
.route-copy p { margin: 30px 0 0; color: var(--muted); font-size: 18px; max-width: 620px; }
.leverage-list { border-top: 1px solid #c8deef; }
.leverage-item { display: grid; grid-template-columns: 48px 160px 1fr; gap: 24px; padding: 30px 0; border-bottom: 1px solid #c8deef; }
.leverage-item > span { color: var(--blue); font-size: 12px; font-weight: 700; }
.leverage-item h3 { margin: 0; font-size: 20px; }
.leverage-item p { margin: 0; color: var(--muted); }

.summit { background: var(--paper); }
.summit-layout { display: grid; grid-template-columns: 1.18fr .82fr; gap: 34px; align-items: stretch; }
.summit-gallery { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.summit-gallery figure { margin: 0; overflow: hidden; min-height: 230px; background: #dbe5ef; }
.summit-gallery img { width: 100%; height: 100%; object-fit: cover; filter: saturate(.84) contrast(1.02); transition: transform .5s ease, filter .5s ease; }
.summit-gallery figure:hover img { transform: scale(1.025); filter: saturate(1); }
.photo-main { grid-column: 1 / -1; min-height: 430px !important; }
.summit-card { padding: 44px; border: 1px solid var(--line); background: white; display: flex; flex-direction: column; }
.event-label { color: var(--blue); font-size: 10px; font-weight: 700; letter-spacing: .14em; }
.summit-card h3 { margin: 38px 0 4px; font-family: var(--serif); font-weight: 400; font-size: clamp(46px, 5vw, 68px); line-height: .98; letter-spacing: -.04em; }
.event-subtitle { margin: 0 0 32px; color: var(--muted); font-size: 17px; }
.event-details { border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); margin-bottom: 28px; }
.event-details div { display: grid; grid-template-columns: 92px 1fr; gap: 20px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.event-details div:last-child { border-bottom: 0; }
.event-details span { color: var(--muted); font-size: 12px; }
.event-details strong { font-size: 13px; }
.summit-card > p { color: var(--muted); }
.partner-line { margin: 16px 0 28px; display: grid; gap: 6px; }
.partner-line span { color: var(--muted); font-size: 11px; letter-spacing: .1em; text-transform: uppercase; }
.partner-line strong { font-size: 13px; }
.summit-card .button { margin-top: auto; align-self: flex-start; }

.programme { background: white; }
.programme-panel { min-height: 660px; background: linear-gradient(135deg, var(--deep-2), var(--deep)); color: white; padding: 70px; display: grid; grid-template-columns: 1fr .85fr; gap: 60px; align-items: center; overflow: hidden; position: relative; }
.programme-panel::before { content:""; position:absolute; inset:auto -10% -50% auto; width:650px; height:650px; border-radius:50%; background:radial-gradient(circle, rgba(21,129,255,.28), transparent 68%); }
.programme-copy { position: relative; z-index: 2; }
.programme-label { color: #9ed7ff; font-size: 11px; letter-spacing: .15em; font-weight: 700; margin-bottom: 28px; }
.programme h2 { font-size: clamp(52px, 6vw, 82px); max-width: 820px; }
.programme-copy p { max-width: 710px; color: #bed0df; font-size: 17px; }
.programme-copy .button { margin-top: 24px; }
.programme-map { position: relative; min-height: 500px; display: grid; place-items: center; z-index: 2; }
.map-ring { position: absolute; border: 1px solid rgba(157,211,255,.23); border-radius: 50%; }
.ring-one { width: 220px; height: 220px; }
.ring-two { width: 350px; height: 350px; }
.ring-three { width: 480px; height: 480px; }
.map-center { width: 138px; height: 138px; border-radius: 50%; display: grid; place-items: center; text-align: center; font-size: 12px; font-weight: 700; letter-spacing: .11em; background: var(--blue); box-shadow: 0 0 70px rgba(21,129,255,.45); }
.map-node { position: absolute; display: flex; align-items: center; gap: 9px; font-size: 12px; color: #cfe7fb; }
.map-node span { width: 8px; height: 8px; background: var(--sky); border-radius: 50%; box-shadow: 0 0 0 8px rgba(1,163,250,.12); }
.node-1 { top: 12%; left: 30%; }
.node-2 { right: 4%; top: 42%; }
.node-3 { bottom: 12%; right: 28%; }
.node-4 { left: 2%; top: 56%; }

.leadership { background: var(--paper); }
.leadership-card { display: grid; grid-template-columns: 1.15fr .85fr; border-top: 1px solid var(--line); border-bottom: 1px solid var(--line); }
.leadership-statement { padding: 62px 50px 62px 0; }
.leadership-statement p { margin: 0; font-family: var(--serif); font-size: clamp(36px, 4vw, 58px); line-height: 1.13; letter-spacing: -.03em; }
.leadership-statement strong { font-weight: 500; color: var(--blue); }
.leadership-roles { border-left: 1px solid var(--line); }
.leadership-roles div { padding: 42px; border-bottom: 1px solid var(--line); }
.leadership-roles div:last-child { border-bottom: 0; }
.leadership-roles span { display:block; color: var(--muted); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; margin-bottom: 9px; }
.leadership-roles strong { font-size: 21px; }

.closing { background: var(--deep-2); color: white; }
.closing-grid { display: grid; grid-template-columns: 1.25fr .65fr; gap: 100px; align-items: end; }
.closing h2 { font-size: clamp(56px, 7vw, 96px); }
.contact-block p { color: #bdd0df; margin: 0 0 30px; }
.contact-email { display: inline-block; color: #8dc7ff; font-size: clamp(25px, 2.5vw, 36px); font-family: var(--serif); border-bottom: 1px solid rgba(141,199,255,.45); }
.contact-email:hover { color: white; border-color: white; }
.socials { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 38px; }
.socials a { font-size: 12px; font-weight: 700; color: #d3e5f4; }
.socials a:hover { color: #8dc7ff; }

.site-footer { padding: 70px max(24px, calc((100vw - var(--max)) / 2)) 28px; background: white; }
.footer-main { display: flex; justify-content: space-between; align-items: end; gap: 30px; padding-bottom: 54px; }
.footer-main img { width: 240px; }
.footer-tag { color: var(--muted); font-size: 12px; letter-spacing: .1em; }
.footer-bottom { border-top: 1px solid var(--line); padding-top: 20px; display: flex; gap: 30px; justify-content: space-between; color: var(--muted); font-size: 11px; letter-spacing: .06em; }
.footer-bottom a:hover { color: var(--blue); }

.reveal { opacity: 0; transform: translateY(22px); transition: opacity .7s ease, transform .7s ease; }
.reveal.visible { opacity: 1; transform: translateY(0); }

@media (max-width: 1020px) {
  .section-pad { padding-top: 96px; padding-bottom: 96px; }
  .hero-grid, .statement-grid, .route-grid, .summit-layout, .programme-panel, .closing-grid { grid-template-columns: 1fr; }
  .hero { min-height: auto; }
  .hero-visual { min-height: 480px; max-width: 680px; margin: 0 auto; }
  .statement-grid, .route-grid, .closing-grid { gap: 55px; }
  .section-head { grid-template-columns: 1fr; gap: 28px; }
  .pillar { grid-template-columns: 70px 1fr 130px; }
  .programme-map { min-height: 430px; }
  .leadership-card { grid-template-columns: 1fr; }
  .leadership-roles { border-left: 0; border-top: 1px solid var(--line); display: grid; grid-template-columns: 1fr 1fr; }
  .leadership-roles div { border-bottom: 0; border-right: 1px solid var(--line); }
  .leadership-roles div:last-child { border-right: 0; }
}

@media (max-width: 820px) {
  .nav-wrap { width: min(calc(100% - 32px), var(--max)); height: 76px; }
  .brand { width: 180px; }
  .menu-button { display: block; position: relative; z-index: 102; }
  .menu-button.active span:first-child { transform: translateY(4.25px) rotate(45deg); }
  .menu-button.active span:last-child { transform: translateY(-4.25px) rotate(-45deg); }
  .site-nav {
    position: fixed;
    top: 0; right: 0; bottom: 0; left: 0;
    min-height: 100vh;
    background: rgba(250,250,248,.98);
    padding: 120px 26px 40px;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 26px;
    font-family: var(--serif);
    font-size: 38px;
    transform: translateY(-110vh);
    transition: transform .35s ease;
    z-index: 101;
  }
  .site-nav.open { transform: translateY(0); }
  .site-nav .nav-contact { font-family: var(--sans); font-size: 14px; }
  .hero { padding-top: 64px; }
  .hero-grid { gap: 48px; }
  .hero h1 { font-size: clamp(58px, 15vw, 86px); }
  .hero-visual { min-height: 390px; }
  .pillar { grid-template-columns: 48px 1fr; gap: 18px; }
  .pillar a { grid-column: 2; justify-self: start; }
  .research-grid { grid-template-columns: 1fr; }
  .research-card-large { grid-column: auto; }
  .research-card { min-height: 320px; padding: 28px; }
  .leverage-item { grid-template-columns: 38px 1fr; }
  .leverage-item p { grid-column: 2; }
  .summit-gallery { grid-template-columns: 1fr; }
  .photo-main, .photo-small { grid-column: auto; min-height: 300px !important; }
  .programme-panel { padding: 48px 30px; }
  .programme-map { transform: scale(.82); margin: -40px 0; }
  .leadership-roles { grid-template-columns: 1fr; }
  .leadership-roles div { border-right: 0; border-bottom: 1px solid var(--line); }
  .leadership-roles div:last-child { border-bottom: 0; }
  .leadership-statement { padding-right: 0; }
  .footer-main, .footer-bottom { align-items: flex-start; flex-direction: column; }
  .footer-bottom { gap: 10px; }
}

@media (max-width: 520px) {
  .section-pad { padding-left: 20px; padding-right: 20px; padding-top: 82px; padding-bottom: 82px; }
  .hero { padding-top: 48px; }
  .hero-intro { font-size: 18px; }
  .hero-actions { align-items: flex-start; flex-direction: column; }
  .hero-visual { min-height: 320px; }
  .statement-copy p:first-child { font-size: 23px; }
  .section-head h2 { font-size: 49px; }
  .summit-card { padding: 28px; }
  .programme-panel { padding: 40px 24px; }
  .programme-map { min-height: 390px; transform: scale(.7); margin: -70px -40px; }
  .route-copy h2, .programme h2, .closing h2 { font-size: 48px; }
  .research-card h3, .research-card:not(.research-card-large) h3 { font-size: 32px; }
  .leadership-statement p { font-size: 34px; }
  .footer-main img { width: 210px; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; transition-duration: .01ms !important; }
  .reveal { opacity: 1; transform: none; }
}