:root {
  --navy-950: #03101f;
  --navy-900: #071b33;
  --navy-850: #0b2441;
  --navy-800: #102d4e;
  --ink: #102033;
  --muted: #5d6b7a;
  --line: #dbe3ea;
  --paper: #f5f7f8;
  --white: #ffffff;
  --teal: #59e4ce;
  --teal-dark: #168f84;
  --gold: #f4c868;
  --shadow: 0 24px 60px rgba(3, 16, 31, .13);
  --radius: 22px;
  --container: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: inherit; }
img, svg { display: block; max-width: 100%; }
button, input, textarea { font: inherit; }
button { cursor: pointer; }
.container { width: min(calc(100% - 40px), var(--container)); margin-inline: auto; }
.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; left: 16px; top: -60px; padding: 10px 16px; color: var(--navy-950); background: var(--teal); border-radius: 8px; font-weight: 800; transition: top .2s; }
.skip-link:focus { top: 16px; }

.site-header {
  position: fixed;
  z-index: 100;
  inset: 0 0 auto;
  height: 82px;
  color: var(--white);
  background: rgba(3, 16, 31, .15);
  border-bottom: 1px solid rgba(255, 255, 255, .08);
  backdrop-filter: blur(16px);
  transition: background .25s, box-shadow .25s;
}
.site-header.scrolled { background: rgba(3, 16, 31, .96); box-shadow: 0 10px 32px rgba(0, 0, 0, .18); }
.header-inner { height: 100%; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { width: 40px; height: 40px; fill: none; stroke: var(--teal); stroke-width: 2; }
.brand span { display: flex; align-items: baseline; gap: 6px; }
.brand strong { font-size: 1.04rem; letter-spacing: .01em; }
.brand small { color: var(--gold); font-size: .83rem; font-weight: 800; }
.primary-nav { display: flex; align-items: center; gap: 25px; }
.primary-nav a { position: relative; color: rgba(255,255,255,.82); font-size: .91rem; font-weight: 650; text-decoration: none; }
.primary-nav > a:not(.button)::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--teal); transition: right .2s; }
.primary-nav > a:not(.button):hover::after, .primary-nav > a:not(.button):focus-visible::after { right: 0; }
.primary-nav a:hover, .primary-nav a:focus-visible { color: var(--white); }
.nav-toggle { display: none; width: 44px; height: 44px; padding: 11px; border: 1px solid rgba(255,255,255,.22); border-radius: 12px; background: transparent; }
.nav-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: var(--white); transition: .2s; }

.button { display: inline-flex; align-items: center; justify-content: center; min-height: 51px; padding: 0 22px; border: 1px solid var(--teal); border-radius: 999px; color: var(--navy-950); background: var(--teal); box-shadow: 0 10px 26px rgba(89, 228, 206, .18); font-weight: 800; line-height: 1.1; text-decoration: none; transition: transform .2s, box-shadow .2s, background .2s; }
.button:hover, .button:focus-visible { transform: translateY(-2px); box-shadow: 0 14px 34px rgba(89, 228, 206, .26); }
.button-small { min-height: 42px; padding-inline: 18px; font-size: .86rem !important; }
.button-ghost { color: var(--white); background: transparent; border-color: rgba(255,255,255,.38); box-shadow: none; }
.button-ghost:hover { border-color: var(--teal); background: rgba(89,228,206,.08); box-shadow: none; }
.button-light { color: var(--navy-950); background: var(--white); border-color: var(--white); box-shadow: none; }
.button-outline-light { color: var(--white); background: transparent; border-color: rgba(255,255,255,.48); box-shadow: none; }
.button-outline-light:hover { background: rgba(255,255,255,.08); box-shadow: none; }

.hero { position: relative; min-height: 850px; padding: 96px 0 84px; overflow: hidden; color: var(--white); background: linear-gradient(135deg, var(--navy-950) 0%, var(--navy-900) 55%, #123a5b 100%); }
.hero-grid { position: absolute; inset: 0; opacity: .16; background-image: linear-gradient(rgba(255,255,255,.12) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.12) 1px, transparent 1px); background-size: 54px 54px; mask-image: linear-gradient(to bottom, black 0%, transparent 92%); }
.hero-orb { position: absolute; border-radius: 50%; filter: blur(4px); pointer-events: none; }
.hero-orb-one { width: 390px; height: 390px; right: -90px; top: 95px; background: radial-gradient(circle, rgba(89,228,206,.23), rgba(89,228,206,0) 70%); }
.hero-orb-two { width: 470px; height: 470px; left: 28%; bottom: -270px; background: radial-gradient(circle, rgba(244,200,104,.13), rgba(244,200,104,0) 70%); }
.hero-inner { position: relative; }
.eyebrow { margin: 0 0 19px; color: var(--teal); font-size: .77rem; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; }
.eyebrow-dark { color: var(--teal-dark); }
h1, h2, h3, h4 { margin-top: 0; line-height: 1.12; letter-spacing: -.035em; }
h1 { margin-bottom: 18px; font-size: clamp(2.4rem, 4.2vw, 3.4rem); font-weight: 800; }
h1 span { color: var(--gold); }
h2 { margin-bottom: 23px; font-size: clamp(2.15rem, 3.65vw, 3.55rem); font-weight: 790; }
h3 { font-size: 1.35rem; }
.hero-lead { max-width: 720px; margin: 0; color: rgba(255,255,255,.76); font-size: 1.17rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; margin-top: 26px; }
.hero-meta { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-top: 55px; }
.hero-meta > div { min-height: 112px; padding: 18px; border: 1px solid rgba(255,255,255,.12); border-radius: 15px; background: rgba(255,255,255,.045); }
.hero-meta strong, .hero-meta small { display: block; }
.hero-meta strong { margin: 8px 0 2px; font-size: .92rem; }
.hero-meta small { color: rgba(255,255,255,.55); font-size: .76rem; line-height: 1.4; }
.meta-icon { color: var(--teal); font-size: 1.2rem; }
.hero-columns { display: grid; grid-template-columns: 1.05fr .95fr; gap: 56px; align-items: stretch; }
.hero-main { display: grid; gap: 24px; align-content: start; }
.hero-video { overflow: hidden; border: 1px solid rgba(255,255,255,.15); border-radius: 22px; background: #000; box-shadow: 0 45px 90px rgba(0,0,0,.35); }
.hero-video video { display: block; width: 100%; height: auto; }
.hero-visual { position: relative; }
.visual-card { position: absolute; inset: 0; display: flex; flex-direction: column; padding: 20px; border: 1px solid rgba(255,255,255,.15); border-radius: 26px; background: linear-gradient(145deg, rgba(255,255,255,.09), rgba(255,255,255,.025)); box-shadow: 0 45px 90px rgba(0,0,0,.35); backdrop-filter: blur(16px); transform: perspective(1000px) rotateY(-5deg) rotateX(2deg); }
.visual-card::before { content: ""; position: absolute; inset: 12px; border: 1px solid rgba(89,228,206,.12); border-radius: 18px; pointer-events: none; }
.visual-topline, .visual-footer { position: relative; z-index: 1; display: flex; justify-content: space-between; color: rgba(255,255,255,.55); font-size: .66rem; font-weight: 900; letter-spacing: .17em; }
.visual-footer { justify-content: center; gap: 12px; padding-bottom: 6px; }
.live-dot { color: var(--gold); }
.visual-card svg { width: 100%; flex: 1 1 auto; min-height: 0; }
.network-nodes circle { fill: var(--navy-900); stroke: var(--teal); stroke-width: 2; }
.network-nodes .core-node { fill: rgba(244,200,104,.12); stroke: var(--gold); }
.node-labels text { fill: rgba(255,255,255,.7); font-size: 12px; font-weight: 800; letter-spacing: 1px; }
.node-labels .core-label { fill: var(--gold); font-size: 11px; }

.section { padding: 115px 0; }
.section-light { background: var(--paper); }
.section-dark { color: var(--white); background: linear-gradient(140deg, var(--navy-950), var(--navy-850)); }
.section-call { color: var(--white); background: var(--navy-900); }
.section-heading { max-width: 730px; }
.section-heading.centred { margin-inline: auto; text-align: center; }
.section-heading > p:last-child { color: inherit; opacity: .68; font-size: 1.07rem; }
.split-layout { display: grid; grid-template-columns: .88fr 1.12fr; gap: 100px; align-items: start; }
.prose { font-size: 1.08rem; }
.prose p { margin-top: 0; color: #445365; }
.highlight-box { display: grid; grid-template-columns: 160px 1fr; gap: 22px; margin-top: 34px; padding: 25px; border-left: 4px solid var(--gold); background: var(--white); box-shadow: 0 15px 38px rgba(8, 28, 49, .07); }
.highlight-box strong { color: var(--navy-900); }
.highlight-box span { color: var(--muted); }

.call-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 18px; margin-top: 52px; }
.call-card { min-height: 286px; padding: 28px; border: 1px solid rgba(255,255,255,.13); border-radius: var(--radius); background: rgba(255,255,255,.045); transition: transform .25s, border-color .25s, background .25s; }
.call-card:hover { transform: translateY(-6px); border-color: rgba(89,228,206,.5); background: rgba(255,255,255,.065); }
.card-number { display: inline-grid; place-items: center; width: 43px; height: 43px; margin-bottom: 42px; border: 1px solid rgba(89,228,206,.5); border-radius: 50%; color: var(--teal); font-size: .74rem; font-weight: 900; }
.call-card h3 { margin-bottom: 12px; }
.call-card p { margin: 0; color: rgba(255,255,255,.64); font-size: .94rem; }
.submission-summary { display: grid; grid-template-columns: .9fr 1.1fr; gap: 50px; margin-top: 52px; padding: 42px; border-radius: var(--radius); color: var(--ink); background: var(--white); box-shadow: var(--shadow); }
.mini-label { margin: 0 0 10px !important; color: var(--teal-dark) !important; font-size: .73rem !important; font-weight: 900; letter-spacing: .13em; text-transform: uppercase; }
.submission-summary p { color: var(--muted); }
.submission-checklist { padding-left: 38px; border-left: 1px solid var(--line); }
.submission-checklist h4 { margin-bottom: 15px; font-size: 1rem; }
.submission-checklist ul { margin: 0; padding: 0; list-style: none; }
.submission-checklist li { position: relative; padding: 7px 0 7px 27px; color: #465567; }
.submission-checklist li::before { content: "✓"; position: absolute; left: 0; color: var(--teal-dark); font-weight: 900; }

.topic-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 13px; margin-top: 48px; }
.topic { display: flex; gap: 15px; align-items: center; min-height: 95px; padding: 19px; border: 1px solid var(--line); border-radius: 15px; background: var(--white); transition: border-color .2s, transform .2s, box-shadow .2s; }
.topic:hover { transform: translateY(-3px); border-color: #a9d9d1; box-shadow: 0 12px 28px rgba(8, 28, 49, .08); }
.topic span { flex: 0 0 auto; color: var(--teal-dark); font-size: .68rem; font-weight: 900; }
.topic p { margin: 0; font-size: .94rem; font-weight: 700; line-height: 1.35; }
.topics-note { margin-top: 24px; color: var(--muted); font-style: italic; }

.programme-layout { display: grid; grid-template-columns: .8fr 1.2fr; gap: 90px; align-items: start; }
.programme-list { margin: 0; padding: 0; list-style: none; }
.programme-list li { display: flex; gap: 24px; align-items: center; padding: 23px 0; border-bottom: 1px solid rgba(255,255,255,.12); }
.programme-list > li:first-child { padding-top: 0; }
.programme-list li > span { color: var(--teal); font-size: .73rem; font-weight: 900; letter-spacing: .08em; }
.programme-list strong, .programme-list small { display: block; }
.programme-list strong { font-size: 1.03rem; }
.programme-list small { margin-top: 3px; color: rgba(255,255,255,.52); }

.selection-grid { display: grid; grid-template-columns: .95fr 1.05fr; gap: 80px; align-items: center; }
.timeline-card { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); box-shadow: var(--shadow); }
.timeline-card > div { display: flex; justify-content: space-between; gap: 30px; padding: 22px 26px; border-bottom: 1px solid var(--line); }
.timeline-card span { color: var(--muted); }
.timeline-card strong { color: var(--navy-900); text-align: right; }
.timeline-card p { margin: 0; padding: 20px 26px; color: var(--muted); background: #eef4f4; font-size: .88rem; }

.section-submit { padding: 75px 0; background: var(--paper); }
.submit-panel { display: grid; grid-template-columns: 1.1fr .9fr; gap: 70px; align-items: center; padding: 58px; border-radius: 28px; color: var(--white); background: linear-gradient(125deg, var(--teal-dark), #126878 55%, var(--navy-800)); box-shadow: var(--shadow); }
.submit-panel h2 { max-width: 680px; font-size: clamp(2.25rem, 4vw, 3.6rem); }
.submit-panel p { color: rgba(255,255,255,.76); }
.submit-actions { display: flex; flex-direction: column; align-items: stretch; gap: 12px; }
.text-link-light { margin-top: 4px; color: rgba(255,255,255,.78); text-align: center; font-size: .87rem; }
.copy-status { min-height: 24px; margin: 0 !important; text-align: center; font-size: .82rem; }
.submit-direct { margin: 2px 0 0; text-align: center; font-size: .87rem; }
.submit-direct strong { color: var(--white); font-weight: 700; }
.copy-address { margin-left: 6px; padding: 3px 12px; border: 1px solid rgba(255,255,255,.42); border-radius: 999px; background: transparent; color: var(--white); font: inherit; font-size: .76rem; cursor: pointer; }
.copy-address:hover { background: rgba(255,255,255,.1); }
.mailto-fallback { margin-top: 8px; padding: 16px 18px; border: 1px solid rgba(244,200,104,.5); border-radius: 14px; background: rgba(244,200,104,.1); }
.mailto-fallback p { margin: 0 0 12px; font-size: .89rem; }
.mailto-fallback strong { color: var(--gold); }
.fallback-actions { display: flex; flex-wrap: wrap; gap: 10px; }
.fallback-actions .button { padding: 10px 16px; font-size: .85rem; }

.organiser-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; margin-top: 50px; }
.organiser-card { display: grid; grid-template-columns: auto 1fr; gap: 22px; padding: 30px; border: 1px solid var(--line); border-radius: var(--radius); background: var(--white); }
.organiser-avatar { display: grid; place-items: center; width: 74px; height: 74px; border-radius: 19px; color: var(--navy-950); background: linear-gradient(145deg, var(--teal), #c4f6ee); font-size: 1.2rem; font-weight: 900; overflow: hidden; }
.organiser-avatar img { width: 100%; height: 100%; object-fit: cover; object-position: center 18%; display: block; }
.organiser-card h3 { margin-bottom: 9px; color: var(--navy-900); }
.organiser-card p { margin: 0 0 12px; color: var(--muted); font-size: .92rem; }
.organiser-card a { color: var(--teal-dark); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 4px; }

.site-footer { padding: 68px 0 24px; color: rgba(255,255,255,.65); background: var(--navy-950); }
.footer-grid { display: grid; grid-template-columns: 1.5fr .65fr .75fr; gap: 75px; }
.brand-footer { color: var(--white); }
.footer-grid > div { display: flex; flex-direction: column; align-items: flex-start; gap: 9px; }
.footer-grid p { max-width: 390px; margin: 10px 0 0; }
.footer-grid strong { margin-bottom: 5px; color: var(--white); font-size: .87rem; }
.footer-grid a { color: rgba(255,255,255,.65); text-decoration: none; }
.footer-grid a:hover { color: var(--teal); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; margin-top: 48px; padding-top: 22px; border-top: 1px solid rgba(255,255,255,.1); font-size: .78rem; }
.noscript { position: fixed; z-index: 999; left: 16px; right: 16px; bottom: 16px; padding: 12px 16px; color: var(--navy-950); background: var(--gold); border-radius: 10px; text-align: center; font-weight: 700; }

.reveal { opacity: 1; transform: none; }
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity .7s ease, transform .7s ease; }
.js .reveal.is-visible { opacity: 1; transform: translateY(0); }

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

@media (max-width: 1040px) {
  .primary-nav { gap: 17px; }
  .primary-nav a { font-size: .84rem; }
  .hero-columns { gap: 38px; }
  .call-grid { grid-template-columns: repeat(2, 1fr); }
  .topic-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 860px) {
  .site-header { height: 72px; }
  .nav-toggle { display: block; }
  .primary-nav { position: fixed; inset: 72px 0 auto; display: flex; flex-direction: column; align-items: stretch; gap: 0; padding: 18px 20px 28px; background: rgba(3,16,31,.98); border-bottom: 1px solid rgba(255,255,255,.12); transform: translateY(-130%); visibility: hidden; transition: transform .25s, visibility .25s; }
  .primary-nav.open { transform: translateY(0); visibility: visible; }
  .primary-nav a { padding: 13px 6px; font-size: 1rem; }
  .primary-nav .button { margin-top: 10px; }
  .hero { min-height: auto; padding-top: 135px; }
  .hero-columns, .split-layout, .programme-layout, .selection-grid, .submit-panel { grid-template-columns: 1fr; }
  .hero-inner { display: flex; flex-direction: column; }
  .hero-columns { display: contents; }
  .hero-visual { order: 5; max-width: 600px; margin: 45px auto 0; }
  .visual-card { position: relative; inset: auto; transform: none; }
  .split-layout, .programme-layout, .selection-grid, .submit-panel { gap: 45px; }
  .highlight-box { grid-template-columns: 1fr; }
  .submission-summary { grid-template-columns: 1fr; }
  .submission-checklist { padding: 28px 0 0; border-top: 1px solid var(--line); border-left: 0; }
  .organiser-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-grid > div:first-child { grid-column: 1 / -1; }
}

@media (max-width: 620px) {
  .container { width: min(calc(100% - 28px), var(--container)); }
  .section { padding: 82px 0; }
  .hero { padding: 122px 0 80px; }
  h1 { font-size: clamp(2.05rem, 8.6vw, 2.6rem); }
  h2 { font-size: 2.25rem; }
  .hero-actions { flex-direction: column; align-items: stretch; }
  .hero-meta { grid-template-columns: 1fr; }
  .hero-meta > div { min-height: 90px; }
  .call-grid, .topic-grid { grid-template-columns: 1fr; }
  .call-card { min-height: 235px; }
  .submission-summary, .submit-panel { padding: 28px; }
  .timeline-card > div { flex-direction: column; gap: 5px; }
  .timeline-card strong { text-align: left; }
  .organiser-card { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 34px; }
  .footer-grid > div:first-child { grid-column: auto; }
  .footer-bottom { flex-direction: column; }
}

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

section[id] { scroll-margin-top: 92px; }