/* ==========================================================================
   GLOBAL VACCINE LEADERSHIP SUMMIT 2027 — Shared stylesheet
   Organised by Graviton International
   --------------------------------------------------------------------------
   Contents
   01  Design tokens (colours, type, spacing)  ← change brand values here
   02  Reset & base
   03  Typography
   04  Layout primitives
   05  Buttons & links
   06  Site header & navigation
   07  Media frames & image placeholders
   08  Home: split-screen hero
   09  Home: introduction & statistics
   10  Home: global brand moment
   11  Home: experience stories
   12  Home: partner band
   13  Edition: hero & in-page navigation
   14  Edition: section heads
   15  Edition: about / why attend
   16  Edition: programme tabs
   17  Edition: speakers
   18  Edition: leadership dinner & awards
   19  Edition: partnership
   20  Edition: delegate passes & countdown
   21  Edition: travel & stay
   22  Cross-promotion
   23  Newsletter
   24  Footer
   25  Register-interest dialog
   26  Motion (reveals) & reduced motion
   ========================================================================== */


/* 01 — DESIGN TOKENS ====================================================== */
:root {
  /* Brand colours */
  --navy:          #0F2747;   /* primary */
  --navy-deep:     #081A33;   /* darkest surfaces, overlays */
  --navy-mid:      #16355E;
  --teal:          #3CC6C8;   /* global accent (on dark) */
  --teal-ink:      #0B7276;   /* global accent text on light (AA) */
  --london-gold:   #CBA65E;   /* London accent (on dark) */
  --london-ink:    #80602A;   /* London accent text on light (AA) */
  --boston-blue:   #3AA6E8;   /* Boston accent (on dark) */
  --boston-ink:    #165D96;   /* Boston accent text on light (AA) */
  --off-white:     #F6F4EF;   /* warm off-white sections */
  --paper:         #FCFBF8;   /* page background */
  --white:         #FFFFFF;
  --text:          #0F1F36;
  --muted:         #56627A;
  --on-dark:       #F3F1EC;
  --on-dark-muted: #B4BED0;
  --rule:          rgba(15, 39, 71, 0.14);
  --rule-dark:     rgba(243, 241, 236, 0.18);

  /* Contextual accent — overridden per edition (see body.edition--*) */
  --accent:        var(--teal);
  --accent-ink:    var(--teal-ink);
  --focus:         #0B7276;

  /* Typography — two families only */
  --font-serif: "Newsreader", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --font-sans:  "Hanken Grotesk", "Helvetica Neue", Arial, system-ui, sans-serif;

  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: clamp(1rem, 0.96rem + 0.2vw, 1.0625rem);
  --fs-lead: clamp(1.125rem, 1.05rem + 0.4vw, 1.3125rem);
  --fs-h4:   clamp(1.25rem, 1.15rem + 0.5vw, 1.5rem);
  --fs-h3:   clamp(1.5rem, 1.3rem + 1vw, 2.125rem);
  --fs-h2:   clamp(2.4rem, 1.5rem + 3.6vw, 5rem);
  --fs-h1:   clamp(3rem, 1.6rem + 5.4vw, 7rem);
  --fs-city: clamp(4rem, 0.4rem + 8.5vw, 12rem);
  --fs-stat: clamp(4rem, 2.4rem + 7vw, 8.5rem);

  /* Spacing & layout */
  --gutter:      clamp(1.25rem, 0.6rem + 3vw, 3.5rem);
  --section-y:   clamp(5.5rem, 3rem + 9vw, 11.5rem);
  --container:   1240px;
  --container-wide: 1560px;
  --header-h:    84px;

  --ease:  cubic-bezier(0.22, 0.61, 0.36, 1);
  --slow:  640ms;
  --med:   360ms;
}

body.edition--london { --accent: var(--london-gold); --accent-ink: var(--london-ink); }
body.edition--boston { --accent: var(--boston-blue); --accent-ink: var(--boston-ink); }

/* Dark surfaces get light focus rings and light accents */
.on-dark { --focus: #7FE0E2; color: var(--on-dark); }


/* 02 — RESET & BASE ======================================================= */
*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; scroll-padding-top: calc(var(--header-h) + 1rem); }
body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: 1.6;
  color: var(--text);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; }
img { height: auto; }
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
h1, h2, h3, h4, p, ul, ol, dl, figure { margin: 0; }
ul[role="list"], ol[role="list"] { list-style: none; padding: 0; }

:focus-visible {
  outline: 3px solid var(--focus);
  outline-offset: 3px;
  border-radius: 2px;
}

.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip-link {
  position: absolute; left: 1rem; top: -4rem; z-index: 200;
  background: var(--white); color: var(--navy); padding: 0.75rem 1.25rem;
  font-weight: 600; text-decoration: none; transition: top 200ms var(--ease);
}
.skip-link:focus { top: 1rem; }


/* 03 — TYPOGRAPHY ========================================================= */
.serif { font-family: var(--font-serif); }

.display, .h1, .h2, .h3 {
  font-family: var(--font-serif);
  font-weight: 400;
  letter-spacing: -0.015em;
  line-height: 1.02;
  font-variation-settings: "opsz" 72;
  text-wrap: balance;
}
.h1 { font-size: var(--fs-h1); }
.h2 { font-size: var(--fs-h2); }
.h3 { font-size: var(--fs-h3); line-height: 1.12; letter-spacing: -0.01em; }
.h4 { font-family: var(--font-sans); font-size: var(--fs-h4); font-weight: 600; line-height: 1.25; }

.eyebrow {
  display: inline-flex; align-items: center; gap: 0.85rem;
  font-family: var(--font-sans);
  font-size: var(--fs-xs);
  font-weight: 600;
  letter-spacing: 0.26em;
  text-transform: uppercase;
  color: var(--navy);
}
.eyebrow::before {
  content: ""; width: 2.25rem; height: 1px; background: var(--accent-ink);
}
.on-dark .eyebrow { color: var(--on-dark); }
.on-dark .eyebrow::before { background: var(--accent); }
.eyebrow--plain::before { display: none; }

.lead { font-size: var(--fs-lead); line-height: 1.6; color: var(--muted); max-width: 40em; }
.on-dark .lead { color: var(--on-dark-muted); }
.prose p + p { margin-top: 1.1em; }
.prose { max-width: 38em; }

/* The recurring brand signature */
.signature {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 300;
  letter-spacing: 0.005em;
}

/* Placeholder copy — visible to staff, still elegant for visitors */
.placeholder-text {
  color: var(--muted);
  font-style: italic;
  border-left: 2px solid var(--rule);
  padding-left: 1rem;
}
.on-dark .placeholder-text { color: var(--on-dark-muted); border-color: var(--rule-dark); }

.tag {
  display: inline-flex; align-items: center; gap: 0.4rem;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase;
  padding: 0.3rem 0.65rem; border: 1px solid var(--rule); color: var(--muted);
  border-radius: 999px; white-space: nowrap;
}
.on-dark .tag { border-color: var(--rule-dark); color: var(--on-dark-muted); }


/* 04 — LAYOUT PRIMITIVES ================================================== */
.container      { width: 100%; max-width: calc(var(--container) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }
.container-wide { width: 100%; max-width: calc(var(--container-wide) + var(--gutter) * 2); margin-inline: auto; padding-inline: var(--gutter); }

.section        { padding-block: var(--section-y); }
.section--tint  { background: var(--off-white); }
.section--dark  { background: var(--navy); color: var(--on-dark); }
.section--deep  { background: var(--navy-deep); color: var(--on-dark); }
.section--flush-top { padding-top: 0; }

.stack > * + * { margin-top: var(--stack, 1.5rem); }


/* 05 — BUTTONS & LINKS ==================================================== */
.btn {
  --btn-bg: var(--navy); --btn-fg: var(--white); --btn-bd: var(--navy);
  display: inline-flex; align-items: center; justify-content: center; gap: 0.75rem;
  min-height: 52px; padding: 0.85rem 1.6rem;
  font-family: var(--font-sans); font-size: 0.8125rem; font-weight: 600;
  letter-spacing: 0.16em; text-transform: uppercase; text-decoration: none;
  color: var(--btn-fg); background: var(--btn-bg); border: 1px solid var(--btn-bd);
  border-radius: 0; cursor: pointer;
  transition: background var(--med) var(--ease), color var(--med) var(--ease), border-color var(--med) var(--ease);
}
.btn:hover { --btn-bg: var(--navy-mid); --btn-bd: var(--navy-mid); }
.btn--accent { --btn-bg: var(--accent); --btn-fg: var(--navy-deep); --btn-bd: var(--accent); }
.btn--accent:hover { --btn-bg: var(--white); --btn-bd: var(--white); --btn-fg: var(--navy-deep); }
.btn--light { --btn-bg: var(--on-dark); --btn-fg: var(--navy-deep); --btn-bd: var(--on-dark); }
.btn--light:hover { --btn-bg: var(--white); --btn-bd: var(--white); --btn-fg: var(--navy-deep); }
.btn--ghost { --btn-bg: transparent; --btn-fg: var(--navy); --btn-bd: rgba(15,39,71,0.35); }
.btn--ghost:hover { --btn-bg: var(--navy); --btn-fg: var(--white); --btn-bd: var(--navy); }
.btn--ghost-light { --btn-bg: transparent; --btn-fg: var(--on-dark); --btn-bd: rgba(243,241,236,0.45); }
.btn--ghost-light:hover { --btn-bg: var(--on-dark); --btn-fg: var(--navy-deep); --btn-bd: var(--on-dark); }
.btn--sm { min-height: 44px; padding: 0.6rem 1.15rem; font-size: 0.75rem; }
.btn .icon { width: 1.1em; height: 1.1em; transition: transform var(--med) var(--ease); }
.btn:hover .icon { transform: translateX(3px); }

.btn-row { display: flex; flex-wrap: wrap; gap: 0.85rem; }

.link-arrow {
  display: inline-flex; align-items: center; gap: 0.7rem;
  font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase;
  text-decoration: none; color: inherit; padding-block: 0.6rem;
  border-bottom: 1px solid currentColor;
}
.link-arrow .icon { width: 1.1em; height: 1.1em; transition: transform var(--med) var(--ease); }
.link-arrow:hover .icon { transform: translateX(4px); }

.link-quiet {
  display: inline-flex; align-items: center; gap: 0.6rem; padding-block: 0.5rem;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase;
  text-decoration: none; color: var(--navy);
}
.link-quiet .icon { width: 1em; height: 1em; color: var(--accent-ink); transition: transform var(--med) var(--ease); }
.link-quiet:hover .icon { transform: translateX(5px); }
.link-quiet:hover { text-decoration: underline; text-underline-offset: 6px; text-decoration-thickness: 1px; }
.link-arrow { border-bottom-color: color-mix(in srgb, currentColor 40%, transparent); }
.icon { flex: none; width: 1.25rem; height: 1.25rem; fill: none; stroke: currentColor; stroke-width: 1.5; stroke-linecap: round; stroke-linejoin: round; }
.icon--fill { fill: currentColor; stroke: none; }


/* 06 — SITE HEADER & NAVIGATION =========================================== */
.site-header {
  position: fixed; inset: 0 0 auto 0; z-index: 100;
  color: var(--on-dark);
  transition: background var(--med) var(--ease), box-shadow var(--med) var(--ease), transform var(--med) var(--ease);
  --focus: #7FE0E2;
}
.site-header::before { /* soft legibility scrim over hero imagery */
  content: ""; position: absolute; inset: 0 0 -40px 0; pointer-events: none;
  background: linear-gradient(to bottom, rgba(8,26,51,0.7), rgba(8,26,51,0));
  transition: opacity var(--med) var(--ease);
}
.site-header.is-scrolled {
  background: rgba(8, 26, 51, 0.94);
  -webkit-backdrop-filter: saturate(140%) blur(14px);
  backdrop-filter: saturate(140%) blur(14px);
  box-shadow: 0 1px 0 var(--rule-dark);
}
.site-header.is-scrolled::before { opacity: 0; }

.nav-bar {
  position: relative;
  display: flex; align-items: center; justify-content: space-between; gap: 2rem;
  min-height: var(--header-h);
}

/* Wordmark — the recognisable identity */
.brand { display: inline-flex; flex-direction: column; gap: 0.3rem; text-decoration: none; line-height: 1; }
.brand__name {
  font-family: var(--font-sans); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.2em; text-transform: uppercase; line-height: 1.35;
}
.brand__year { color: var(--accent); }
.brand__theme { font-family: var(--font-serif); font-style: italic; font-weight: 300; font-size: 0.875rem; color: var(--on-dark-muted); letter-spacing: 0.01em; }

.primary-nav { display: flex; align-items: center; gap: 2.25rem; }
.primary-nav ul { display: flex; gap: 1.85rem; list-style: none; margin: 0; padding: 0; }
.primary-nav a:not(.btn) {
  position: relative; display: inline-block; padding-block: 0.6rem;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase;
  text-decoration: none; color: var(--on-dark);
}
.primary-nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0.3rem; height: 1px;
  background: var(--accent); transform: scaleX(0); transform-origin: left;
  transition: transform var(--med) var(--ease);
}
.primary-nav a:not(.btn):hover::after,
.primary-nav a[aria-current="page"]::after { transform: scaleX(1); }

.nav-toggle {
  display: none; align-items: center; gap: 0.75rem;
  min-height: 48px; padding: 0 0.25rem 0 1rem; background: none; border: 0; cursor: pointer;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--on-dark);
}
.nav-toggle__bars { position: relative; width: 26px; height: 12px; }
.nav-toggle__bars::before, .nav-toggle__bars::after {
  content: ""; position: absolute; left: 0; right: 0; height: 1.5px; background: currentColor;
  transition: transform var(--med) var(--ease), top var(--med) var(--ease);
}
.nav-toggle__bars::before { top: 0; }
.nav-toggle__bars::after  { top: 10px; }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::before { top: 5px; transform: rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle__bars::after  { top: 5px; transform: rotate(-45deg); }

@media (max-width: 1080px) {
  .nav-toggle { display: inline-flex; }
  .primary-nav {
    position: fixed; inset: var(--header-h) 0 0 0; z-index: 99;
    flex-direction: column; align-items: stretch; justify-content: flex-start; gap: 2.5rem;
    padding: 2.5rem var(--gutter) 3rem;
    background: var(--navy-deep);
    overflow-y: auto;
    opacity: 0; visibility: hidden; transform: translateY(-8px);
    transition: opacity var(--med) var(--ease), transform var(--med) var(--ease), visibility 0s linear var(--med);
  }
  .primary-nav.is-open { opacity: 1; visibility: visible; transform: none; transition-delay: 0s; }
  .primary-nav ul { flex-direction: column; gap: 0; }
  .primary-nav li { border-bottom: 1px solid var(--rule-dark); }
  .primary-nav a:not(.btn) {
    display: block; padding-block: 1.1rem;
    font-family: var(--font-serif); font-size: 1.875rem; font-weight: 400;
    letter-spacing: 0; text-transform: none;
  }
  .primary-nav a:not(.btn)::after { display: none; }
  .primary-nav .btn { align-self: flex-start; }
  body.nav-open { overflow: hidden; }
  body.nav-open .site-header { background: var(--navy-deep); }
}


/* 07 — MEDIA FRAMES & IMAGE PLACEHOLDERS ==================================
   Every photograph sits inside .media. If the image file has not been
   supplied yet, script.js adds .is-missing and the frame shows an elegant
   navy field labelled with the expected file path (data-label).          */
.media {
  position: relative; overflow: hidden; min-width: 0;
  background:
    radial-gradient(120% 90% at 20% 110%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 60%),
    linear-gradient(160deg, var(--navy-mid), var(--navy-deep));
}
.media picture { display: contents; }
.media img {
  width: 100%; height: 100%; object-fit: cover;
  object-position: var(--pos-m, center);
  transform: scale(var(--zoom, 1)); transform-origin: var(--origin, center);
  transition: transform 1100ms var(--ease);
}
.media.is-missing img { visibility: hidden; }
.media.is-missing::after {
  content: "Image placeholder\A" attr(data-label);
  white-space: pre; position: absolute; left: 1.25rem; bottom: 1.1rem;
  font-family: var(--font-sans); font-size: 0.6875rem; letter-spacing: 0.14em; text-transform: uppercase;
  line-height: 1.7; color: rgba(243,241,236,0.62);
}
.media.is-missing::before { /* fine engraved grid so placeholders still feel designed */
  content: ""; position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(243,241,236,0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(243,241,236,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 70% 30%, #000 10%, transparent 75%);
}
.media--london { --accent: var(--london-gold); }
.media--boston { --accent: var(--boston-blue); }
.media--global { --accent: var(--teal); }

.hover-zoom:hover .media img,
.hover-zoom:focus-visible .media img { transform: scale(calc(var(--zoom, 1) * 1.025)); }
@media (min-width: 768px) { .media img { object-position: var(--pos, center); } }


/* 08 — HOME: SPLIT-SCREEN HERO ============================================ */
.split {
  position: relative;
  display: flex;
  height: 100vh; height: 100svh; min-height: 640px;
  background: var(--navy-deep);
}
.city-panel {
  position: relative; flex: 1 1 0; min-width: 0;
  display: flex; align-items: flex-end;
  color: var(--on-dark); text-decoration: none;
  isolation: isolate; overflow: hidden;
  transition: flex-grow var(--slow) var(--ease);
  --focus: #7FE0E2;
}
.city-panel--london { --accent: var(--london-gold); }
.city-panel--boston { --accent: var(--boston-blue); }
.city-panel .media { position: absolute; inset: 0; z-index: -2; }
.city-panel__overlay {
  position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to top, rgba(8,26,51,0.9) 0%, rgba(8,26,51,0.55) 30%, rgba(8,26,51,0) 62%);
  transition: background-color var(--slow) var(--ease);
}
.city-panel + .city-panel { border-left: 1px solid var(--rule-dark); }

.city-panel__content {
  width: 100%;
  padding: calc(var(--header-h) + 2rem) clamp(1.5rem, 4vw, 4.5rem) clamp(2.5rem, 7vh, 5.5rem);
}
.city-panel__edition {
  display: flex; align-items: center; gap: 0.85rem;
  font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.34em; text-transform: uppercase;
  color: var(--on-dark);
}
.city-panel__edition::before { content: ""; width: 2.25rem; height: 1px; background: var(--accent); }
.city-panel__name {
  margin-top: 0.75rem; margin-left: -0.04em;
  font-family: var(--font-serif); font-weight: 400; white-space: nowrap;
  font-size: var(--fs-city); line-height: 0.84; letter-spacing: -0.01em;
  text-shadow: 0 2px 40px rgba(8,26,51,0.35);
  text-transform: uppercase;
  font-variation-settings: "opsz" 72;
}
.city-panel__meta {
  display: flex; flex-wrap: wrap; align-items: baseline; gap: 0.35rem 1.5rem;
  margin-top: 1.4rem;
}
.city-panel > .city-panel__content > .city-panel__date { margin-top: 1.4rem; }
.city-panel__date {
  font-size: clamp(0.875rem, 0.78rem + 0.35vw, 1.0625rem); font-weight: 600;
  letter-spacing: 0.24em; text-transform: uppercase; color: var(--on-dark);
}
.city-panel__country { font-family: var(--font-serif); font-style: italic; font-size: 1.125rem; color: var(--on-dark-muted); }
.city-panel__hook {
  margin-top: 1rem; max-width: 24em;
  font-family: var(--font-serif); font-style: italic; font-weight: 300; font-size: clamp(1rem, 0.94rem + 0.3vw, 1.2rem); line-height: 1.45;
  color: rgba(243,241,236,0.82);
}
.city-panel__cta {
  display: inline-flex; align-items: center; gap: 0.85rem; margin-top: 2rem;
  padding-bottom: 0.55rem; border-bottom: 1px solid var(--accent);
  font-size: 0.8125rem; font-weight: 600; letter-spacing: 0.2em; text-transform: uppercase;
}
.city-panel__cta .icon { transition: transform var(--med) var(--ease); }

/* Desktop interaction: subtle expansion, sibling dims */
@media (hover: hover) and (min-width: 900px) {
  .split:hover .city-panel:hover,
  .city-panel:focus-visible { flex-grow: 1.2; }               /* ≈ 54.5% */
  .split:hover .city-panel:not(:hover) .city-panel__overlay,
  .split:has(.city-panel:focus-visible) .city-panel:not(:focus-visible) .city-panel__overlay {
    background-color: rgba(8,26,51,0.38);
  }
  .city-panel:hover .media img, .city-panel:focus-visible .media img { transform: scale(1.025); }
  .city-panel:hover .city-panel__cta .icon, .city-panel:focus-visible .city-panel__cta .icon { transform: translateX(5px); }
}
.city-panel:focus-visible { outline: 3px solid var(--focus); outline-offset: -8px; }
.city-panel .media.is-missing::after,
.edition-hero .media.is-missing::after,
.crosspromo .media.is-missing::after { top: calc(var(--header-h) + 1.25rem); bottom: auto; left: auto; right: var(--gutter); text-align: right; z-index: 1; }


@media (max-width: 899px) {
  .split { flex-direction: column; height: auto; min-height: 0; }
  .city-panel { min-height: 86svh; flex: none; }
  .city-panel + .city-panel { border-left: 0; border-top: 1px solid var(--rule-dark); }
  .city-panel--boston .city-panel__content { padding-top: 4rem; }
  .city-panel__name { font-size: clamp(4rem, 19vw, 8.5rem); }
  .city-panel__overlay { background: linear-gradient(to top, rgba(8,26,51,0.94) 0%, rgba(8,26,51,0.72) 38%, rgba(8,26,51,0) 72%); }
}


/* 09 — HOME: INTRODUCTION & STATISTICS ==================================== */
.intro__grid {
  display: grid; gap: clamp(2rem, 4vw, 5rem);
  grid-template-columns: 1fr;
}
@media (min-width: 960px) { .intro__grid { grid-template-columns: 5fr 6fr; align-items: end; } }
.intro__headline { max-width: 11ch; }

.stats {
  display: grid; grid-template-columns: 1fr;
  margin-top: clamp(4.5rem, 9vw, 8rem);
}
.stat { padding: 2.25rem 0 0.5rem; }
.stat + .stat { border-top: 1px solid var(--rule); }
@media (min-width: 720px) {
  .stats { grid-template-columns: repeat(3, 1fr); }
  .stat { padding: 2.75rem clamp(1.5rem, 3vw, 3rem) 0.5rem; }
  .stat:first-child { padding-left: 0; }
  .stat + .stat { border-top: 0; border-left: 1px solid var(--rule); }
}
.stat__num {
  display: block;
  font-family: var(--font-serif); font-weight: 300; font-size: var(--fs-stat); line-height: 0.9;
  letter-spacing: -0.03em; color: var(--navy);
  font-variant-numeric: lining-nums tabular-nums;
  font-variation-settings: "opsz" 72;
}
.stat dd { margin: 0; }
.stat__label {
  display: block; margin-top: 1rem;
  font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.26em; text-transform: uppercase; color: var(--muted);
}
.intro__closing {
  margin-top: clamp(3rem, 6vw, 5rem); max-width: 36em;
  font-family: var(--font-serif); font-size: var(--fs-h4); line-height: 1.45; font-weight: 300; color: var(--text);
}


/* 10 — HOME: GLOBAL BRAND MOMENT ========================================== */
.global-moment {
  position: relative; overflow: hidden; isolation: isolate;
  background:
    radial-gradient(60% 80% at 50% 40%, rgba(22,53,94,0.9), transparent 70%),
    var(--navy-deep);
  padding-block: clamp(7rem, 5rem + 10vw, 13rem);
  text-align: center;
}
.network-map { position: absolute; inset: 0; width: 100%; height: 100%; z-index: -1; opacity: 0.9; }
.network-map .g   { stroke: rgba(243,241,236,0.06); stroke-width: 1; }
.network-map .a   { fill: none; stroke: rgba(60,198,200,0.28); stroke-width: 1; }
.network-map .a--main { stroke: var(--teal); stroke-width: 1.5; stroke-dasharray: 6 8; animation: dash 14s linear infinite; }
.network-map .n   { fill: var(--teal); opacity: 0.55; animation: glow 6s var(--ease) infinite; animation-delay: calc(var(--i) * -0.45s); }
.network-map .hub--gold { fill: var(--london-gold); }
.network-map .hub--blue { fill: var(--boston-blue); }
.network-map .halo { fill: none; stroke-width: 1; opacity: 0.6; }
.network-map .halo--gold { stroke: var(--london-gold); }
.network-map .halo--blue { stroke: var(--boston-blue); }
.network-map .lbl { fill: var(--on-dark-muted); font: 600 11px var(--font-sans); letter-spacing: 0.2em; text-transform: uppercase; }
@keyframes dash { to { stroke-dashoffset: -280; } }
@keyframes glow { 0%, 100% { opacity: 0.35; } 50% { opacity: 0.9; } }

.global-moment::after { /* vignette keeps type legible */
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: radial-gradient(ellipse at center, rgba(8,26,51,0.25) 0%, rgba(8,26,51,0.85) 78%);
}
.global-moment .eyebrow { justify-content: center; }
.global-moment .eyebrow::after { content: ""; width: 2.25rem; height: 1px; background: var(--accent); }
.global-moment__title {
  margin-top: 2rem;
  font-family: var(--font-serif); font-weight: 300; font-style: italic;
  font-size: clamp(3rem, 1.5rem + 7vw, 8.5rem); line-height: 0.98; letter-spacing: -0.02em;
  font-variation-settings: "opsz" 72;
}
.global-moment__title span { display: block; }
.global-moment__cities {
  display: flex; justify-content: center; gap: clamp(1.5rem, 5vw, 4rem); margin-top: 3rem;
  font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase;
}
@media (max-width: 560px) { .global-moment__cities { flex-direction: column; align-items: center; gap: 0.5rem; } }
.global-moment__cities a { text-decoration: none; color: var(--on-dark); padding-block: 0.5rem; border-bottom: 1px solid transparent; }
.global-moment__cities a:hover { border-color: currentColor; }
.global-moment__cities .london { color: var(--london-gold); }
.global-moment__cities .boston { color: var(--boston-blue); }


/* 11 — HOME: EXPERIENCE STORIES =========================================== */
.stories__head { max-width: 46rem; margin-bottom: clamp(4rem, 8vw, 7rem); }
.story {
  display: grid; gap: 2rem; align-items: center;
  grid-template-columns: 1fr;
}
.story + .story { margin-top: clamp(5rem, 10vw, 9rem); }
.story .media { aspect-ratio: 3 / 2; }
@media (min-width: 900px) {
  .story { grid-template-columns: 7fr 5fr; gap: clamp(3rem, 6vw, 7rem); }
  .story .media { aspect-ratio: 1 / 1; max-height: 78vh; }
  .story { grid-template-columns: 6fr 5fr; }
  .story--reverse { grid-template-columns: 5fr 6fr; }
  .story--reverse { grid-template-columns: 5fr 7fr; }
  .story--reverse .story__media { order: 2; }
}
.story__text { max-width: 30rem; }
.story__title { margin-top: 1.5rem; font-size: clamp(2rem, 1.4rem + 2.4vw, 3.5rem); }
.story__body { margin-top: 1.5rem; color: var(--muted); }


/* 12 — HOME: PARTNER BAND ================================================= */
.partner-band { display: grid; gap: 2.5rem; align-items: end; }
@media (min-width: 900px) { .partner-band { grid-template-columns: 1.3fr 1fr; } }
.partner-band .btn-row { justify-content: flex-start; }
@media (min-width: 900px) { .partner-band .btn-row { justify-content: flex-end; } }


/* 13 — EDITION: HERO & IN-PAGE NAVIGATION ================================= */
.edition-hero {
  position: relative; isolation: isolate; overflow: hidden;
  min-height: 100vh; min-height: 100svh;
  display: flex; align-items: flex-end;
  color: var(--on-dark); background: var(--navy-deep);
  --focus: #7FE0E2;
}
.edition-hero .media { position: absolute; inset: 0; z-index: -2; }
.edition-hero::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(to top, rgba(8,26,51,0.92) 0%, rgba(8,26,51,0.5) 38%, rgba(8,26,51,0) 70%);
}
.edition-hero__inner { padding-top: calc(var(--header-h) + 3rem); padding-bottom: clamp(3rem, 8vh, 6rem); width: 100%; }
.edition-hero__summit {
  font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--on-dark);
}
.edition-hero__summit span { color: var(--accent); }
.edition-hero__city {
  margin-top: 1.25rem;
  font-family: var(--font-serif); font-weight: 400; text-transform: uppercase;
  font-size: clamp(4.5rem, 1rem + 14vw, 15rem); line-height: 0.82; letter-spacing: -0.005em;
  font-variation-settings: "opsz" 72;
}
.edition-hero__row {
  display: grid; gap: 2rem; margin-top: 2.5rem; padding-top: 2rem; border-top: 1px solid var(--rule-dark);
}
@media (min-width: 900px) { .edition-hero__row { grid-template-columns: auto 1fr auto; align-items: end; gap: 4rem; } }
.edition-hero__date { font-size: clamp(1.1rem, 0.9rem + 0.8vw, 1.6rem); font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; }
.edition-hero__country { margin-top: 0.4rem; font-family: var(--font-serif); font-style: italic; font-size: 1.25rem; color: var(--on-dark-muted); }
.edition-hero__theme { font-size: clamp(1.4rem, 1rem + 1.4vw, 2.25rem); color: var(--accent); }

.subnav {
  position: sticky; top: var(--header-h); z-index: 50;
  background: rgba(252,251,248,0.94);
  -webkit-backdrop-filter: blur(12px); backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--rule);
}
.subnav__scroller { overflow-x: auto; scrollbar-width: none; }
.subnav__scroller::-webkit-scrollbar { display: none; }
.subnav ul { display: flex; gap: clamp(1.25rem, 2.5vw, 2.5rem); list-style: none; margin: 0; padding: 0; white-space: nowrap; }
.subnav a {
  display: inline-block; padding: 1.05rem 0; text-decoration: none;
  font-size: 0.75rem; font-weight: 600; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted);
  border-bottom: 2px solid transparent;
}
.subnav a:hover, .subnav a.is-active { color: var(--navy); border-color: var(--accent); }


/* 14 — EDITION: SECTION HEADS ============================================= */
.section-head { display: grid; gap: 1.5rem; margin-bottom: clamp(3rem, 6vw, 5rem); }
@media (min-width: 900px) {
  .section-head--split { grid-template-columns: 5fr 6fr; align-items: end; gap: 4rem; }
}
.section-index {
  display: flex; align-items: center; gap: 1rem;
  font-size: var(--fs-xs); font-weight: 600; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent-ink);
}
.section-index b { font-family: var(--font-serif); font-weight: 400; font-size: 1.125rem; letter-spacing: 0; }
.section-index::after { content: ""; flex: 0 0 2.5rem; height: 1px; background: currentColor; opacity: 0.6; }
.on-dark .section-index { color: var(--accent); }


/* 15 — EDITION: ABOUT / WHY ATTEND ======================================== */
.about__grid { display: grid; gap: 3rem; }
@media (min-width: 960px) { .about__grid { grid-template-columns: 5fr 6fr; gap: 6rem; } }
.about__copy p:first-child { font-family: var(--font-serif); font-size: var(--fs-h4); line-height: 1.5; font-weight: 300; }

.reasons { display: grid; grid-template-columns: 1fr; border-top: 1px solid var(--rule); }
@media (min-width: 640px)  { .reasons { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .reasons { grid-template-columns: repeat(3, 1fr); } }
.reason { padding: 2.5rem 2rem 2.75rem 0; border-bottom: 1px solid var(--rule); }
@media (min-width: 640px) {
  .reason { padding-left: 2rem; border-left: 1px solid var(--rule); }
  .reasons .reason:nth-child(2n+1) { border-left: 0; padding-left: 0; }
}
@media (min-width: 1024px) {
  .reasons .reason:nth-child(2n+1) { border-left: 1px solid var(--rule); padding-left: 2rem; }
  .reasons .reason:nth-child(3n+1) { border-left: 0; padding-left: 0; }
}
.reason .icon { width: 2rem; height: 2rem; stroke-width: 1.1; color: var(--accent-ink); }
.reason h3 { margin-top: 1.75rem; font-family: var(--font-serif); font-weight: 400; font-size: var(--fs-h3); line-height: 1.1; }
.reason p { margin-top: 0.85rem; color: var(--muted); max-width: 26em; }


/* 16 — EDITION: PROGRAMME TABS ============================================ */
.tabs__list { display: flex; gap: 0; border-bottom: 1px solid var(--rule); }
.tab {
  position: relative; flex: 0 1 auto; min-height: 64px;
  padding: 1rem 2.5rem 1.25rem 0; margin-right: 2.5rem;
  background: none; border: 0; cursor: pointer; text-align: left;
  color: var(--muted);
}
.tab__day { display: block; font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; }
.tab__date { display: block; margin-top: 0.35rem; font-family: var(--font-serif); font-size: 1.375rem; white-space: nowrap; }
@media (max-width: 560px) { .tab { padding-right: 1.25rem; margin-right: 1.25rem; } .tab__date { font-size: 1.2rem; } }
.tab::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: -1px; height: 2px; background: var(--accent);
  transform: scaleX(0); transform-origin: left; transition: transform var(--med) var(--ease);
}
.tab[aria-selected="true"] { color: var(--navy); }
.tab[aria-selected="true"]::after { transform: scaleX(1); }
.tab:hover { color: var(--navy); }

.tabs__note { display: flex; flex-wrap: wrap; align-items: center; gap: 0.75rem 1.25rem; margin-top: 2rem; color: var(--muted); font-size: var(--fs-sm); }

.agenda { list-style: none; margin: 1.5rem 0 0; padding: 0; }
.agenda li {
  display: grid; grid-template-columns: 5.5rem 1fr; gap: 1rem 2rem; align-items: baseline;
  padding: 1.35rem 0; border-bottom: 1px solid var(--rule);
}
@media (min-width: 720px) { .agenda li { grid-template-columns: 9rem 1fr; } }
.agenda time { font-family: var(--font-serif); font-size: 1.375rem; font-variant-numeric: tabular-nums lining-nums; color: var(--navy); }
.agenda__title { font-size: 1.125rem; font-weight: 500; }
.agenda li.is-break .agenda__title { color: var(--muted); font-weight: 400; }
[role="tabpanel"][hidden] { display: none; }
.programme__soon { margin-top: 3rem; font-family: var(--font-serif); font-style: italic; font-size: var(--fs-h4); }


/* 17 — EDITION: SPEAKERS ================================================== */
.speakers { display: grid; grid-template-columns: repeat(2, 1fr); gap: clamp(1rem, 2vw, 2rem); list-style: none; margin: 0; padding: 0; }
@media (min-width: 900px) { .speakers { grid-template-columns: repeat(4, 1fr); } }
.speaker .media { aspect-ratio: 4 / 5; }
.speaker--tba .media::before {
  content: ""; position: absolute; left: 50%; top: 22%; width: 34%; aspect-ratio: 1; transform: translateX(-50%);
  border-radius: 50%; border: 1px solid rgba(243,241,236,0.2);
}
.speaker--tba .media::after {
  content: ""; position: absolute; left: 50%; bottom: -18%; width: 78%; aspect-ratio: 1; transform: translateX(-50%);
  border-radius: 50%; border: 1px solid rgba(243,241,236,0.16);
}
.speaker__name { margin-top: 1.1rem; font-family: var(--font-serif); font-size: 1.375rem; line-height: 1.2; }
.speaker__role { margin-top: 0.3rem; font-size: var(--fs-sm); color: var(--muted); }
.speaker__country { margin-top: 0.5rem; font-size: 0.6875rem; letter-spacing: 0.18em; text-transform: uppercase; font-weight: 600; color: var(--accent-ink); }
.speaker--tba .speaker__name { font-family: var(--font-sans); font-size: 0.75rem; font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--muted); }


/* 18 — EDITION: LEADERSHIP DINNER & AWARDS ================================ */
.awards {
  position: relative; overflow: hidden; isolation: isolate;
  background:
    radial-gradient(70% 60% at 85% 0%, color-mix(in srgb, var(--accent) 18%, transparent), transparent 65%),
    radial-gradient(60% 50% at 0% 100%, rgba(22,53,94,0.8), transparent 70%),
    #06132A;
}
.awards::before { /* faint concentric rings — evening, candlelit, formal */
  content: ""; position: absolute; right: -20vw; top: -20vw; width: 70vw; aspect-ratio: 1; z-index: -1;
  border-radius: 50%;
  background: repeating-radial-gradient(circle, transparent 0 46px, color-mix(in srgb, var(--accent) 10%, transparent) 46px 47px);
  mask-image: radial-gradient(circle, #000 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle, #000 30%, transparent 70%);
}
.awards__head { text-align: center; max-width: 52rem; margin-inline: auto; }
.awards__head .section-index { justify-content: center; }
.awards__head .section-index::before { content: ""; flex: 0 0 2.5rem; height: 1px; background: currentColor; opacity: 0.6; }
.awards__title { margin-top: 1.75rem; font-size: clamp(2.75rem, 1.5rem + 5vw, 6.5rem); font-weight: 300; }
.awards__lede { margin-top: 1.5rem; font-family: var(--font-serif); font-style: italic; font-weight: 300; font-size: var(--fs-h4); color: var(--on-dark-muted); }
.awards__open {
  display: inline-block; margin-top: 2.5rem; padding: 0.9rem 1.5rem;
  border-top: 1px solid var(--accent); border-bottom: 1px solid var(--accent);
  font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.24em; text-transform: uppercase; color: var(--accent);
}
.award-list {
  list-style: none; margin: clamp(4rem, 8vw, 6rem) 0 0; padding: 0;
  display: grid; grid-template-columns: 1fr; border-top: 1px solid var(--rule-dark);
}
@media (min-width: 640px)  { .award-list { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1024px) { .award-list { grid-template-columns: repeat(4, 1fr); } }
.award {
  padding: 2rem 1.5rem 2.25rem 0; border-bottom: 1px solid var(--rule-dark);
}
@media (min-width: 640px) {
  .award { padding-left: 1.5rem; border-left: 1px solid var(--rule-dark); }
  .award-list .award:nth-child(2n+1) { border-left: 0; padding-left: 0; }
}
@media (min-width: 1024px) {
  .award-list .award:nth-child(2n+1) { border-left: 1px solid var(--rule-dark); padding-left: 1.5rem; }
  .award-list .award:nth-child(4n+1) { border-left: 0; padding-left: 0; }
}
.award__no { font-family: var(--font-serif); font-size: 1rem; color: var(--accent); }
.award__name { margin-top: 2.5rem; font-family: var(--font-serif); font-size: 1.5rem; line-height: 1.2; font-weight: 400; }
.award__status { margin-top: 0.5rem; font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; color: var(--on-dark-muted); }
.awards__cta { margin-top: clamp(3rem, 6vw, 5rem); text-align: center; }


/* 19 — EDITION: PARTNERSHIP =============================================== */
.partner-hero { display: grid; gap: 2.5rem; align-items: end; }
.partner-hero .media { aspect-ratio: 16 / 10; }
@media (min-width: 960px) {
  .partner-hero { grid-template-columns: 7fr 5fr; gap: 5rem; }
  .partner-hero .media { aspect-ratio: 4 / 3; }
}
.tiers-wrap { margin-top: clamp(4rem, 8vw, 6rem); overflow-x: auto; -webkit-overflow-scrolling: touch; border-top: 2px solid var(--navy); }
.tiers { width: 100%; min-width: 760px; border-collapse: collapse; text-align: left; }
.tiers caption { text-align: left; padding: 0 0 1rem; }
.tiers th, .tiers td { padding: 1.25rem 1rem; border-bottom: 1px solid var(--rule); vertical-align: top; }
.tiers thead th { padding-top: 1.75rem; padding-bottom: 1.75rem; vertical-align: bottom; }
.tiers thead th:first-child { width: 28%; }
.tier__name { display: block; font-size: 0.75rem; font-weight: 700; letter-spacing: 0.2em; text-transform: uppercase; }
.tier__rank { display: block; margin-bottom: 0.6rem; font-family: var(--font-serif); font-size: 1.25rem; font-weight: 400; color: var(--accent-ink); }
.tiers thead th.is-headline { background: var(--navy); color: var(--on-dark); }
.tiers thead th.is-headline .tier__rank { color: var(--accent); }
.tiers tbody th { font-weight: 500; }
.tiers td { color: var(--muted); font-size: var(--fs-sm); }
.tiers td.is-headline { background: rgba(15,39,71,0.04); }
.tbc { display: inline-flex; align-items: center; gap: 0.5rem; }
.tbc::before { content: ""; width: 7px; height: 7px; border: 1px solid currentColor; border-radius: 50%; }
.partner-cta { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; margin-top: 3rem; }
.partner-cta p { color: var(--muted); max-width: 34em; }


/* 20 — EDITION: DELEGATE PASSES & COUNTDOWN =============================== */
.countdown {
  display: grid; gap: 2rem; align-items: center;
  padding: clamp(2rem, 4vw, 3rem); background: var(--navy); color: var(--on-dark);
  --focus: #7FE0E2;
}
@media (min-width: 900px) { .countdown { grid-template-columns: 1fr auto; } }
.countdown__label { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent); }
.countdown__deadline { margin-top: 0.6rem; font-family: var(--font-serif); font-size: var(--fs-h4); font-weight: 300; }
.countdown__units { display: flex; gap: clamp(1rem, 3vw, 2.5rem); list-style: none; margin: 0; padding: 0; }
.countdown__units li { text-align: center; min-width: 3.5rem; }
.countdown__units li + li { padding-left: clamp(1rem, 3vw, 2.5rem); border-left: 1px solid var(--rule-dark); }
.countdown__value { display: block; font-family: var(--font-serif); font-weight: 300; font-size: clamp(2.25rem, 1.5rem + 3vw, 3.75rem); line-height: 1; font-variant-numeric: tabular-nums lining-nums; }
.countdown__unit { display: block; margin-top: 0.5rem; font-size: 0.6875rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--on-dark-muted); }

.passes { display: grid; grid-template-columns: 1fr; margin-top: clamp(3rem, 6vw, 4.5rem); border-top: 1px solid var(--rule); }
@media (min-width: 900px) { .passes { grid-template-columns: repeat(3, 1fr); } }
.pass { padding: 2.5rem 0; border-bottom: 1px solid var(--rule); }
@media (min-width: 900px) {
  .pass { padding: 2.5rem 2.25rem 3rem; border-bottom: 0; }
  .pass:first-child { padding-left: 0; }
  .pass + .pass { border-left: 1px solid var(--rule); }
}
.pass__stage { font-size: var(--fs-xs); font-weight: 700; letter-spacing: 0.22em; text-transform: uppercase; color: var(--accent-ink); }
.pass__title { margin-top: 0.75rem; font-family: var(--font-serif); font-size: var(--fs-h3); font-weight: 400; line-height: 1.1; }
.pass__rates { margin-top: 2rem; display: grid; gap: 0; }
.pass__rate { display: flex; justify-content: space-between; align-items: baseline; gap: 1rem; padding: 1.1rem 0; border-top: 1px solid var(--rule); }
.pass__who { font-size: 0.75rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); max-width: 12rem; }
.pass__price { font-family: var(--font-serif); font-size: 1.5rem; white-space: nowrap; }
.pass__price small { font-family: var(--font-sans); font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.14em; text-transform: uppercase; color: var(--muted); margin-right: 0.35rem; }
.pass--current { position: relative; }
.pass--current .pass__stage::after { content: " · Current"; color: var(--muted); } /* toggled via CONFIG */
.passes__foot { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; margin-top: 2.5rem; color: var(--muted); font-size: var(--fs-sm); }


/* 21 — EDITION: TRAVEL & STAY ============================================= */
.venue { display: grid; gap: 0; background: var(--white); border: 1px solid var(--rule); }
@media (min-width: 960px) { .venue { grid-template-columns: 6fr 5fr; } }
.venue > * { min-width: 0; }
.venue .media { aspect-ratio: 16 / 11; }
@media (min-width: 960px) { .venue .media { aspect-ratio: auto; min-height: 420px; } }
.venue__body { padding: clamp(2rem, 4vw, 3.5rem); }
.venue__status { font-family: var(--font-serif); font-size: clamp(2rem, 1.4rem + 2vw, 3rem); line-height: 1.05; font-weight: 400; }
.venue__status::before { content: ""; display: block; width: 2.5rem; height: 2px; background: var(--accent); margin-bottom: 1.5rem; }
.venue__facts { margin-top: 2rem; display: grid; gap: 0; }
.venue__facts div { display: grid; grid-template-columns: 10rem 1fr; gap: 1rem; padding: 0.95rem 0; border-top: 1px solid var(--rule); }
.venue__facts dt { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.16em; text-transform: uppercase; color: var(--muted); padding-top: 0.2rem; }
.venue__facts dd { margin: 0; }
.venue__map {
  margin-top: 2rem; display: grid; place-items: center; min-height: 320px;
  border: 1px dashed var(--rule); color: var(--muted); font-size: var(--fs-sm); text-align: center; padding: 2rem;
  background:
    linear-gradient(rgba(15,39,71,0.04) 1px, transparent 1px) 0 0 / 32px 32px,
    linear-gradient(90deg, rgba(15,39,71,0.04) 1px, transparent 1px) 0 0 / 32px 32px;
}
.venue__map iframe { width: 100%; height: 420px; border: 0; }


/* 22 — CROSS-PROMOTION ==================================================== */
.crosspromo {
  position: relative; display: flex; align-items: flex-end; isolation: isolate; overflow: hidden;
  min-height: clamp(460px, 70vh, 760px);
  color: var(--on-dark); text-decoration: none;
  --focus: #7FE0E2;
}
.crosspromo .media { position: absolute; inset: 0; z-index: -2; }
.crosspromo::after {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background: linear-gradient(to top, rgba(8,26,51,0.9) 0%, rgba(8,26,51,0.4) 40%, rgba(8,26,51,0) 70%);
  transition: background-color var(--slow) var(--ease);
}
.crosspromo:focus-visible { outline-offset: -8px; }
.crosspromo__inner { width: 100%; padding-block: clamp(3rem, 8vw, 6rem); }
.crosspromo__q { font-family: var(--font-serif); font-style: italic; font-weight: 300; font-size: var(--fs-h3); color: var(--on-dark-muted); }
.crosspromo__city { margin-top: 0.5rem; font-family: var(--font-serif); text-transform: uppercase; font-size: var(--fs-city); line-height: 0.86; }
.crosspromo__row { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 1.5rem; margin-top: 2rem; }
.crosspromo__date { font-weight: 600; letter-spacing: 0.18em; text-transform: uppercase; }
.crosspromo--london { --accent: var(--london-gold); }
.crosspromo--boston { --accent: var(--boston-blue); }
.crosspromo .city-panel__cta { margin-top: 0; }
.crosspromo:hover .media img { transform: scale(1.025); }
.crosspromo:hover .city-panel__cta .icon { transform: translateX(5px); }


/* 23 — NEWSLETTER ========================================================= */
.newsletter { display: grid; gap: 2.5rem; align-items: end; }
@media (min-width: 960px) { .newsletter { grid-template-columns: 1fr 1fr; gap: 5rem; } }
.newsletter__title { margin-top: 1.5rem; }
.newsletter__copy { margin-top: 1.25rem; color: var(--muted); }
.field-inline { display: flex; flex-wrap: wrap; gap: 0; border-bottom: 1px solid var(--navy); }
.field-inline input {
  flex: 1 1 14rem; min-height: 60px; padding: 0.75rem 0; border: 0; background: transparent;
  font-size: 1.125rem;
}
.field-inline input:focus { outline: none; }
.field-inline:focus-within { box-shadow: 0 2px 0 0 var(--focus); }
.field-inline .btn { align-self: center; }
.form-note { margin-top: 1rem; font-size: var(--fs-sm); color: var(--muted); }
.form-status { margin-top: 1rem; font-size: var(--fs-sm); font-weight: 500; min-height: 1.5em; }
.form-status.is-success { color: var(--teal-ink); }
.form-status.is-error { color: #A3271F; }


/* 24 — FOOTER ============================================================= */
.site-footer { background: var(--navy-deep); color: var(--on-dark); padding-top: clamp(5rem, 9vw, 8rem); --focus: #7FE0E2; }
.lockup { font-family: var(--font-serif); font-weight: 400; text-transform: uppercase; line-height: 0.92; letter-spacing: 0; font-size: clamp(2.4rem, 0.9rem + 4.6vw, 6rem); font-variation-settings: "opsz" 72; }
.lockup span { display: block; }
.lockup .lockup__year { color: var(--accent); }
.footer__top { display: grid; gap: 3rem; padding-bottom: clamp(3rem, 6vw, 5rem); border-bottom: 1px solid var(--rule-dark); }
@media (min-width: 960px) { .footer__top { grid-template-columns: 1fr auto; align-items: end; gap: 4rem; } }
.footer__signature { margin-top: 1.25rem; font-size: var(--fs-h3); color: var(--on-dark-muted); }
.footer__org { font-size: var(--fs-sm); color: var(--on-dark-muted); }
.footer__org strong { display: block; margin-top: 0.4rem; font-family: var(--font-serif); font-weight: 400; font-size: 1.5rem; color: var(--on-dark); }
.footer__cols { display: grid; gap: 2.5rem; padding-block: 3rem; grid-template-columns: repeat(2, 1fr); }
@media (min-width: 960px) { .footer__cols { grid-template-columns: repeat(4, 1fr); } }
.footer__h { font-size: 0.6875rem; font-weight: 700; letter-spacing: 0.26em; text-transform: uppercase; color: var(--on-dark-muted); margin-bottom: 1rem; }
.footer__links { list-style: none; margin: 0; padding: 0; }
.footer__links a { display: inline-block; padding-block: 0.4rem; text-decoration: none; color: var(--on-dark); font-size: var(--fs-sm); }
.footer__links a:hover { color: var(--teal); }
.footer__hashtag { font-family: var(--font-serif); font-size: 1.25rem; color: var(--on-dark); }
.social { display: flex; gap: 0.5rem; margin-top: 1rem; }
.social a { display: grid; place-items: center; width: 44px; height: 44px; border: 1px solid var(--rule-dark); border-radius: 50%; color: var(--on-dark); transition: border-color var(--med), color var(--med); }
.social a:hover { border-color: var(--teal); color: var(--teal); }
.social .icon { width: 1rem; height: 1rem; }
.footer__independence { padding-block: 0 2rem; font-size: 0.75rem; line-height: 1.6; color: rgba(180,190,208,0.75); max-width: 62em; }
.footer__base { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 1rem; padding-block: 1.5rem 2.5rem; border-top: 1px solid var(--rule-dark); font-size: var(--fs-sm); color: var(--on-dark-muted); }
.footer__base ul { display: flex; gap: 1.5rem; list-style: none; margin: 0; padding: 0; }
.footer__base a { color: var(--on-dark-muted); text-decoration: none; padding-block: 0.4rem; display: inline-block; }
.footer__base a:hover { color: var(--on-dark); }


/* 25 — REGISTER-INTEREST DIALOG =========================================== */
.dialog {
  width: min(640px, calc(100vw - 2rem)); max-height: calc(100svh - 2rem);
  padding: 0; border: 0; background: var(--paper); color: var(--text);
  box-shadow: 0 30px 80px rgba(8,26,51,0.4);
}
.dialog::backdrop { background: rgba(8,26,51,0.72); -webkit-backdrop-filter: blur(4px); backdrop-filter: blur(4px); }
.dialog__head { display: flex; justify-content: space-between; align-items: flex-start; gap: 1rem; padding: 2rem 2rem 0; }
.dialog__title { margin-top: 1rem; font-size: var(--fs-h3); }
.dialog__close { width: 48px; height: 48px; display: grid; place-items: center; background: none; border: 1px solid var(--rule); border-radius: 50%; cursor: pointer; flex: none; }
.dialog__body { padding: 1.5rem 2rem 2rem; }
.form-grid { display: grid; gap: 1.25rem; }
@media (min-width: 560px) { .form-grid { grid-template-columns: 1fr 1fr; } .form-grid .span-2 { grid-column: 1 / -1; } }
.field label, .field legend { display: block; margin-bottom: 0.45rem; font-size: 0.75rem; font-weight: 600; letter-spacing: 0.12em; text-transform: uppercase; color: var(--muted); }
.field input, .field select {
  width: 100%; min-height: 50px; padding: 0.7rem 0.9rem;
  background: var(--white); border: 1px solid rgba(15,39,71,0.28); border-radius: 0;
}
.field input:focus-visible, .field select:focus-visible { outline: 3px solid var(--focus); outline-offset: 1px; }
.field--check { display: flex; gap: 0.75rem; align-items: flex-start; font-size: var(--fs-sm); color: var(--muted); }
.field--check input { width: 20px; height: 20px; min-height: 0; margin-top: 0.15rem; accent-color: var(--navy); }
.field--check label { margin: 0; font-size: var(--fs-sm); font-weight: 400; letter-spacing: 0; text-transform: none; }
fieldset.field { border: 0; padding: 0; margin: 0; }
.choice-row { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.choice-row label { margin: 0; display: inline-flex; align-items: center; gap: 0.5rem; min-height: 44px; padding: 0 1rem; border: 1px solid rgba(15,39,71,0.28); cursor: pointer; font-size: var(--fs-sm); letter-spacing: 0; text-transform: none; font-weight: 500; color: var(--text); }
.choice-row input, .field .choice-row input { width: auto; min-height: 0; height: auto; padding: 0; margin: 0; accent-color: var(--navy); }
.choice-row label:has(input:checked) { border-color: var(--navy); background: rgba(15,39,71,0.05); }


/* 27 — IMAGE-LED HOMEPAGE (v2) ========================================== */

/* Cinematic banner: full-bleed photograph, one statement, restrained overlay */
.banner {
  position: relative; isolation: isolate; overflow: hidden;
  display: flex; align-items: center;
  min-height: clamp(560px, 82vh, 860px);
  background: var(--navy-deep);
}
.banner > .media { position: absolute; inset: 0; z-index: -2; }
.banner__shade { position: absolute; inset: 0; z-index: -1; }
.banner--left  .banner__shade { background: linear-gradient(90deg, rgba(8,26,51,0.88) 0%, rgba(8,26,51,0.6) 30%, rgba(8,26,51,0) 58%); }
.banner--right .banner__shade { background: linear-gradient(270deg, rgba(8,26,51,0.88) 0%, rgba(8,26,51,0.6) 30%, rgba(8,26,51,0) 58%); }
.banner--center .banner__shade { background: radial-gradient(ellipse 60% 55% at center, rgba(8,26,51,0.72), rgba(8,26,51,0.2) 100%); }
.banner__inner { width: 100%; padding-block: clamp(4rem, 8vw, 7rem); }
.banner__text { max-width: 34rem; }
.banner--right .banner__text { margin-left: auto; }
.banner--center .banner__text { max-width: 60rem; margin-inline: auto; text-align: center; }
.banner--center .eyebrow { justify-content: center; }
.banner--center .eyebrow::after { content: ""; width: 2.25rem; height: 1px; background: var(--accent); }
.banner--mission { min-height: clamp(500px, 70vh, 650px); }
.banner__title {
  margin-top: 1.5rem;
  font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.015em; line-height: 1.02;
  font-size: clamp(2.5rem, 1.5rem + 3.6vw, 5rem); font-variation-settings: "opsz" 72; text-wrap: balance;
}
.banner__statement {
  margin-top: 1.75rem; font-size: clamp(3rem, 1.4rem + 6.4vw, 8rem); line-height: 1; letter-spacing: -0.02em;
  font-variation-settings: "opsz" 72;
}
.banner__statement span { display: inline-block; }
.banner__support { margin-top: 1.5rem; font-size: var(--fs-lead); line-height: 1.55; color: rgba(243,241,236,0.84); max-width: 30em; }
.banner--center .banner__support { margin-inline: auto; }
.banner__cta { margin-top: 2.25rem; }
.banner .link-arrow { color: var(--on-dark); border-color: var(--accent); }
.banner .link-arrow:hover .icon, .banner .btn:hover .icon { transform: translateX(5px); }
.banner--inset { width: min(100% - 2 * var(--gutter), 1760px); margin: var(--section-y) auto 0; }
.banner--inset .banner__inner { padding-inline: clamp(1.5rem, 5vw, 5rem); }

@media (max-width: 767px) {
  .banner { align-items: flex-end; min-height: 76svh; }
  .banner--left .banner__shade, .banner--right .banner__shade {
    background: linear-gradient(to top, rgba(8,26,51,0.95) 0%, rgba(8,26,51,0.75) 45%, rgba(8,26,51,0.15) 80%);
  }
  .banner--mission { align-items: center; min-height: 68svh; }
  .banner--inset { width: 100%; }
}

/* Text-at-top banner: copy over the sky, people below stay vivid */
.banner--top { align-items: flex-start; }
.banner--top .banner__shade { background: linear-gradient(to bottom, rgba(8,26,51,0.9) 0%, rgba(8,26,51,0.55) 26%, rgba(8,26,51,0) 48%); }
.banner--top .banner__inner { padding-top: clamp(3.5rem, 6vw, 5rem); }
.banner--top .banner__text { max-width: none; text-align: center; }
.banner--top .eyebrow { justify-content: center; }
.banner--top .eyebrow::after { content: ""; width: 2.25rem; height: 1px; background: var(--accent); }
.banner--mission { min-height: clamp(560px, 80vh, 780px); }
.banner--mission .banner__statement { margin-top: 1.25rem; font-size: clamp(2.5rem, 1rem + 4.4vw, 5.75rem); text-shadow: 0 2px 30px rgba(8,26,51,0.45); }
.banner--mission .banner__statement span { white-space: nowrap; }
@media (max-width: 767px) {
  .banner.banner--top { align-items: flex-start; min-height: 80svh; }
  .banner--top .banner__shade { background: linear-gradient(to bottom, rgba(8,26,51,0.92) 0%, rgba(8,26,51,0.6) 34%, rgba(8,26,51,0) 56%); }
  .banner--mission .banner__statement span { display: block; }
}

/* Why GVLS themes — five columns of type, hairline separated */
.themes { list-style: none; margin: 0; padding: 0; display: grid; grid-template-columns: 1fr; }
@media (min-width: 1100px) { .themes { grid-template-columns: repeat(5, 1fr); } }
.theme { padding: 2.25rem 1.5rem 2.5rem 0; }
.theme + .theme { border-top: 1px solid var(--rule); }
@media (min-width: 1100px) {
  .theme { padding-left: 1.5rem; }
  .theme + .theme { border-top: 0; border-left: 1px solid var(--rule); }
  .theme:first-child { padding-left: 0; }
}
.theme .icon { width: 1.9rem; height: 1.9rem; stroke-width: 1.1; color: var(--accent-ink); }
.theme h3 { margin-top: 1.75rem; font-size: 0.8125rem; font-weight: 700; letter-spacing: 0.18em; text-transform: uppercase; }
.theme p { margin-top: 0.85rem; color: var(--muted); font-size: var(--fs-sm); line-height: 1.6; max-width: 22em; }

/* Two editions — large 50/50 photographic panels */
.editions { padding-bottom: 0; }
.duo { display: grid; gap: 2px; grid-template-columns: 1fr; max-width: none; padding-inline: 0; }
@media (min-width: 900px) { .duo { grid-template-columns: 1fr 1fr; } }
.duo-panel {
  position: relative; isolation: isolate; overflow: hidden; display: flex; align-items: flex-end;
  min-height: clamp(460px, 62vh, 720px); color: var(--on-dark); text-decoration: none; --focus: #7FE0E2;
}
.duo-panel--london { --accent: var(--london-gold); }
.duo-panel--boston { --accent: var(--boston-blue); }
.duo-panel .media { position: absolute; inset: 0; z-index: -2; }
.duo-panel::after { content: ""; position: absolute; inset: 0; z-index: -1; background: linear-gradient(to top, rgba(8,26,51,0.85) 0%, rgba(8,26,51,0.35) 35%, rgba(8,26,51,0) 60%); }
.duo-panel__content { padding: clamp(1.75rem, 4vw, 3.5rem); }
.duo-panel__city { font-family: var(--font-serif); text-transform: uppercase; font-size: clamp(3.25rem, 1.5rem + 5vw, 7rem); line-height: 0.88; font-variation-settings: "opsz" 72; }
.duo-panel__date { margin: 1rem 0 1.75rem; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase; color: var(--on-dark); }
.duo-panel .city-panel__cta { margin-top: 0; }
.duo-panel:hover .media img, .duo-panel:focus-visible .media img { transform: scale(1.025); }
.duo-panel:hover .city-panel__cta .icon { transform: translateX(5px); }
.duo-panel:focus-visible { outline-offset: -8px; }
@media (max-width: 899px) { .duo-panel { min-height: 62svh; } }

/* Awards teaser */
.awards--teaser .awards__head { text-align: center; }
.awards--teaser .eyebrow { justify-content: center; color: var(--london-gold); }
.awards--teaser .eyebrow::after { content: ""; width: 2.25rem; height: 1px; background: currentColor; opacity: 0.8; }
.awards--teaser { --accent: var(--london-gold); padding-block: clamp(7rem, 5rem + 9vw, 12rem); }
.awards__media { position: absolute; inset: 0; z-index: -2; opacity: 0.35; }

/* Programme teaser */
.prog-teaser { display: grid; gap: 3rem; }
@media (min-width: 960px) { .prog-teaser { grid-template-columns: 5fr 6fr; gap: 6rem; align-items: start; } }
.prog-teaser__links { display: flex; flex-wrap: wrap; gap: 0.5rem 2rem; margin-top: 2.5rem; }
.agenda--teaser { margin-top: 0; border-top: 1px solid var(--rule); }
.agenda--teaser li:last-child { opacity: 0.55; }

/* Closing banner variations */
.global-moment__title--upright { font-style: normal; font-weight: 400; font-size: clamp(2.75rem, 1.4rem + 5.6vw, 7rem); }
.global-moment__sig { margin-top: 2.5rem; font-size: var(--fs-h3); color: var(--on-dark-muted); }
.global-moment__ctas { justify-content: center; margin-top: 3rem; }

.footer__contact { margin-top: 1.25rem; }
.footer__contact a { color: var(--on-dark); }


/* 28 — PANORAMA (uncropped photography + caption) ======================= */
.panorama { background: var(--navy-deep); padding-bottom: clamp(4rem, 8vw, 7rem); }
.panorama__figure { margin: 0; }
.panorama__figure .media { aspect-ratio: 2072 / 759; max-height: 88vh; }
@media (max-width: 767px) { .panorama__figure .media { aspect-ratio: 4 / 3; max-height: none; } }
.panorama__caption { display: grid; gap: 1.5rem 4rem; padding-top: clamp(2.5rem, 5vw, 4rem); }
@media (min-width: 900px) { .panorama__caption { grid-template-columns: 6fr 5fr; align-items: end; } }
.panorama__title {
  margin-top: 1.25rem; font-family: var(--font-serif); font-weight: 400; letter-spacing: -0.015em; line-height: 1.04;
  font-size: clamp(2.25rem, 1.4rem + 3vw, 4.25rem); font-variation-settings: "opsz" 72; text-wrap: balance;
}
.panorama__support { font-size: var(--fs-lead); line-height: 1.55; color: var(--on-dark-muted); max-width: 30em; margin-bottom: 1.5rem; }
.panorama .link-arrow { color: var(--on-dark); }
.panorama + .panorama { padding-top: 0; }

/* 29 — BROCHURE REQUEST =================================================== */
.brochure { border-bottom: 1px solid var(--rule); }
.brochure__grid { display: grid; gap: 3rem; }
@media (min-width: 960px) { .brochure__grid { grid-template-columns: 5fr 6fr; gap: 6rem; align-items: start; } }
.form-status a { color: inherit; font-weight: 600; }
.btn:disabled { opacity: 0.6; cursor: progress; }
.choice-row--quiet { margin-top: 1.25rem; align-items: center; }
.choice-row--quiet .choice-row__label { font-size: 0.6875rem; font-weight: 600; letter-spacing: 0.24em; text-transform: uppercase; color: var(--muted); margin-right: 0.5rem; }
.choice-row--quiet label { min-height: 40px; padding: 0 0.85rem; font-size: var(--fs-sm); }
#newsletter { padding-top: clamp(4rem, 7vw, 7rem); }


/* 26 — MOTION & REDUCED MOTION ============================================ */
.js .reveal { opacity: 0; transform: translateY(20px); transition: opacity 900ms var(--ease), transform 900ms var(--ease); }
.js .reveal.is-visible { opacity: 1; transform: none; }
.js .reveal[data-delay="1"] { transition-delay: 120ms; }
.js .reveal[data-delay="2"] { transition-delay: 240ms; }

/* One orchestrated page-load moment on the home hero */
.js .split .city-panel__content > * { opacity: 0; transform: translateY(14px); transition: opacity 1000ms var(--ease), transform 1000ms var(--ease); }
.js.is-loaded .split .city-panel__content > * { opacity: 1; transform: none; }
.js.is-loaded .split .city-panel__content > *:nth-child(2) { transition-delay: 100ms; }
.js.is-loaded .split .city-panel__content > *:nth-child(3) { transition-delay: 220ms; }
.js.is-loaded .split .city-panel__content > *:nth-child(4) { transition-delay: 340ms; }
.js.is-loaded .split .city-panel__content > *:nth-child(5) { transition-delay: 460ms; }

@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; transition-delay: 0ms !important; }
  .js .reveal, .js .split .city-panel__content > * { opacity: 1; transform: none; }
  .network-map .a--main, .network-map .n { animation: none; }
}

@media print {
  .site-header, .subnav, .dialog, .nav-toggle { display: none !important; }
}

/* Brochure (Google Form link) */
.brochure__action .btn { margin-top: 2rem; }
.brochure__action .form-note { margin-top: 0.85rem; }
@media (min-width: 960px) { .brochure__grid { align-items: end; } }