:root {
  --navy: #051c2c;
  --deep: #062552;
  --blue: #0d579f;
  --orange: #f79300;
  --orange-bright: #ff7417;
  --ice: #eef7fd;
  --paper: #f8fafc;
  --ink: #102a43;
  --muted: #5d7082;
  --line: #d7e1e9;
  --white: #fff;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; color: var(--ink); background: var(--paper); font-family: Inter, sans-serif; line-height: 1.6; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; }
.skip-link { position: fixed; top: -100px; left: 1rem; z-index: 100; padding: .7rem 1rem; background: white; color: var(--navy); }
.skip-link:focus { top: 1rem; }

.site-header { position: sticky; top: 0; z-index: 10; background: white; box-shadow: 0 2px 14px #071e2d12; }
.utility-bar { min-height: 38px; padding: 0 max(24px, calc((100vw - var(--max)) / 2 + 24px)); display: flex; align-items: center; justify-content: space-between; gap: 20px; background: var(--navy); color: #c9d7e1; font-size: 11px; }
.utility-bar > div { display: flex; align-items: center; gap: 24px; }
.utility-bar a:hover { color: var(--orange); }
.mini-countdown { padding: 5px 12px; border-radius: 20px; background: #ffffff12; color: white; }
.mini-countdown b { color: var(--orange); }
.languages { display: flex; gap: 5px; align-items: center; }
.languages button { width: 29px; height: 29px; display: grid; place-items: center; border: 1px solid #ffffff2b; border-radius: 50%; background: transparent; color: white; cursor: pointer; font-size: 9px; }
.languages button.active { background: var(--orange); color: var(--navy); border-color: var(--orange); font-weight: 800; }
.topbar, .nav { max-width: var(--max); margin: auto; padding-inline: 24px; display: flex; align-items: center; justify-content: space-between; }
.topbar { min-height: 82px; }
.brand { display: flex; align-items: center; gap: 16px; }
.brand img { width: 84px; height: 65px; object-fit: contain; }
.brand strong { display: block; font: 600 20px/1.1 "Source Serif 4", serif; color: var(--navy); }
.brand small { color: #7b8994; font-size: 10px; text-transform: uppercase; letter-spacing: .18em; }
.institution-link { font-size: 13px; color: var(--muted); }
.institution-link span { color: var(--orange); }
.nav { min-height: 60px; max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: white; color: var(--navy); border-top: 1px solid #e8eef2; }
.nav-logo { font-weight: 800; font-size: 21px; letter-spacing: .04em; }
.nav-logo em, .footer-mark em { font-style: normal; color: var(--orange-bright); }
.menu { display: flex; align-items: center; gap: clamp(16px, 2.5vw, 36px); }
.menu a { font-size: 14px; font-weight: 600; opacity: .85; }
.menu a:hover { opacity: 1; color: var(--orange); }
.menu .nav-cta { padding: 12px 22px; border-radius: 4px; background: var(--navy); color: white; opacity: 1; }
.menu-toggle { display: none; color: var(--navy); border: 1px solid #0a253c3d; background: none; padding: 7px 12px; }

.partner-ribbon { overflow: hidden; padding: 15px 0 18px; background: #edf3f7; border-bottom: 1px solid #dce6ed; }
.partner-ribbon > p { margin: 0 0 9px; text-align: center; color: var(--blue); font-size: 9px; font-weight: 800; letter-spacing: .22em; text-transform: uppercase; }
.partner-track { display: flex; width: max-content; animation: partner-scroll 24s linear infinite; }
.partner-track > div { display: flex; align-items: center; gap: 70px; padding-right: 70px; }
.partner-track span { min-width: 105px; color: #517087; font-size: 17px; font-weight: 800; text-align: center; letter-spacing: -.04em; }
@keyframes partner-scroll { to { transform: translateX(-50%); } }

.hero { position: relative; overflow: hidden; background: linear-gradient(120deg, #031b2d 0%, #062e5c 62%, #0b5395 100%); color: white; }
.hero-banner-image { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center; opacity: .34; filter: saturate(.8) contrast(1.06); }
.hero-banner-image[hidden] { display: none; }
.hero:has(.hero-banner-image:not([hidden]))::before { content: ""; position: absolute; z-index: 1; inset: 0; background: linear-gradient(90deg, #031b2df2 0%, #05264ac9 55%, #073d716b 100%); }
.network { position: absolute; inset: 0; opacity: .28; background-image: radial-gradient(circle at center, #64b9ef 0 2px, transparent 3px), linear-gradient(30deg, transparent 49.5%, #7dc7f240 50%, transparent 50.5%), linear-gradient(150deg, transparent 49.5%, #7dc7f230 50%, transparent 50.5%); background-size: 140px 120px, 140px 120px, 140px 120px; mask-image: linear-gradient(90deg, transparent 0, black 45%); }
.hero::after { content: ""; position: absolute; width: 480px; height: 480px; border: 1px solid #ffffff1f; border-radius: 50%; right: -130px; top: -180px; box-shadow: 0 0 0 70px #ffffff08, 0 0 0 150px #ffffff05; }
.hero-inner { position: relative; z-index: 1; max-width: var(--max); min-height: 620px; margin: auto; padding: 90px 24px 70px; display: grid; grid-template-columns: 1.45fr .7fr; align-items: center; gap: 80px; }
.eyebrow, .kicker { margin: 0 0 16px; color: var(--orange); font-size: 12px; font-weight: 800; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 { margin: 0; font-size: clamp(70px, 10vw, 132px); line-height: .85; letter-spacing: -.06em; }
.hero h1 span { color: var(--orange-bright); }
.matrix-name { max-width: 760px; margin: 34px 0 8px; font-size: clamp(17px, 2.1vw, 26px); font-weight: 500; line-height: 1.4; }
.matrix-name b { color: var(--orange-bright); }
.hero-subtitle { margin: 0; color: #c5daea; font-size: 18px; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 38px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 50px; padding: 0 24px; font-size: 14px; font-weight: 700; transition: .2s ease; }
.button:hover { transform: translateY(-2px); }
.button.primary { background: var(--orange); color: var(--navy); }
.button.secondary { border: 1px solid #ffffff73; color: white; }
.event-card { padding: 34px; background: #ffffff10; border: 1px solid #ffffff26; backdrop-filter: blur(14px); box-shadow: 0 30px 70px #00101f4d; }
.date-block { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 12px; padding-bottom: 25px; border-bottom: 1px solid #ffffff26; }
.date-block div { display: flex; flex-direction: column; }
.date-block strong { font-size: 46px; line-height: 1; color: var(--orange); }
.date-block span { color: #d8e8f2; font-weight: 600; text-transform: uppercase; letter-spacing: .08em; font-size: 10px; }
.date-block i { color: #ffffff73; font-style: normal; }
.date-block small { grid-column: 1 / -1; margin-top: -7px; color: #8ca8bc; font-size: 10px; letter-spacing: .2em; }
.place { display: flex; gap: 14px; align-items: flex-start; padding: 25px 0; }
.place svg { width: 26px; flex: 0 0 auto; fill: var(--orange); }
.place p { margin: 0; color: #d8e8f2; font-size: 13px; line-height: 1.5; }
.place strong { color: white; }
.countdown { padding-top: 22px; border-top: 1px solid #ffffff26; }
.countdown > p { margin: 0 0 10px; font-size: 11px; text-transform: uppercase; letter-spacing: .12em; color: #9db7ca; }
.countdown > div { display: flex; gap: 24px; }
.countdown span { font-size: 10px; color: #9db7ca; text-transform: uppercase; }
.countdown b { display: block; color: white; font-size: 27px; line-height: 1.1; }
.hero-stats { position: relative; z-index: 2; display: flex; justify-content: center; gap: clamp(25px, 8vw, 110px); padding: 22px 24px; background: var(--orange); color: var(--navy); }
.hero-stats span { font-size: 13px; font-weight: 600; }
.hero-stats b { font-size: 24px; margin-right: 6px; }

.section { max-width: var(--max); margin: auto; padding: 110px 24px; }
.section-label { color: var(--orange); font-size: 12px; font-weight: 800; letter-spacing: .18em; writing-mode: vertical-rl; transform: rotate(180deg); }
.intro { display: grid; grid-template-columns: 70px 1fr; }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 80px; align-items: start; }
h2 { margin: 0; font: 700 clamp(38px, 5.2vw, 68px)/1.04 "Source Serif 4", serif; letter-spacing: -.035em; color: var(--navy); }
.intro p { color: var(--muted); }
.intro .lead { margin-top: 0; color: var(--ink); font-size: 20px; line-height: 1.6; }
.section-heading { display: grid; grid-template-columns: 1.3fr .7fr; gap: 80px; align-items: end; margin-bottom: 60px; }
.section-heading > p { margin: 0; color: var(--muted); }
.themes { max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: var(--ice); }
.theme-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.theme-card { position: relative; min-height: 410px; padding: 28px; overflow: hidden; background: white; border-top: 4px solid var(--blue); transition: transform .25s, box-shadow .25s; }
.theme-card:hover { transform: translateY(-7px); box-shadow: 0 24px 50px #0b31501a; border-color: var(--orange); }
.theme-number { color: var(--orange); font-size: 12px; font-weight: 800; }
.symbol { position: absolute; right: 15px; top: -28px; color: #e4f1fa; font: 700 120px/1 serif; }
.theme-card h3 { position: relative; margin: 78px 0 28px; font: 700 25px/1.2 "Source Serif 4", serif; color: var(--navy); }
.theme-card ul { margin: 0; padding: 0; list-style: none; color: var(--muted); font-size: 13px; }
.theme-card li { padding: 7px 0; border-bottom: 1px solid #eaf0f4; }

.speakers { max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: var(--navy); color: white; }
.section-heading.light h2 { color: white; }
.section-heading.light > p { color: #9fb4c3; }
.speaker-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
.speaker { padding: 18px; border-left: 1px solid #ffffff26; }
.portrait { position: relative; aspect-ratio: 1; display: grid; place-items: center; overflow: hidden; margin-bottom: 26px; background: radial-gradient(circle at 65% 30%, #2f72ad, #0a3158 60%, #061b2c); color: #ffffffbf; font: 700 clamp(52px, 6vw, 84px)/1 "Source Serif 4", serif; border-radius: 50%; box-shadow: inset 0 0 0 1px #ffffff1f; }
.portrait img { position: absolute; inset: 0; width: 100%; height: 100%; object-fit: cover; object-position: center top; }
.portrait img[hidden] { display: none; }
.speaker p { margin: 0; color: var(--orange); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .15em; }
.speaker h3 { margin: 6px 0 0; font: 600 28px/1.15 "Source Serif 4", serif; }
.provisional { margin: 36px 0 0; color: #7893a7; font-size: 11px; text-align: right; }

.dates-section { display: grid; grid-template-columns: .55fr 1.45fr; gap: 80px; }
.timeline article { display: grid; grid-template-columns: 130px 1fr; gap: 34px; padding: 32px 0; border-top: 1px solid var(--line); }
.timeline article:last-child { border-bottom: 1px solid var(--line); }
.timeline time { display: flex; align-items: center; gap: 12px; }
.timeline time b { font-size: 42px; line-height: 1; color: var(--blue); }
.timeline time span { color: var(--muted); font-size: 11px; text-transform: uppercase; line-height: 1.3; }
.timeline small { color: var(--orange); font-weight: 800; text-transform: uppercase; letter-spacing: .12em; }
.timeline h3 { margin: 2px 0 5px; font: 600 24px "Source Serif 4", serif; color: var(--navy); }
.timeline p { margin: 0; color: var(--muted); font-size: 14px; }
.timeline .highlight { margin-inline: -24px; padding-inline: 24px; background: var(--navy); border: none; color: white; }
.timeline .highlight h3, .timeline .highlight time b { color: white; }
.timeline .highlight p { color: #a9bdcc; }

.venue-section { display: grid; grid-template-columns: .85fr 1.15fr; gap: 70px; align-items: center; padding: 110px max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: linear-gradient(135deg, #f0f5f8, #fff); }
.venue-lead { max-width: 560px; color: var(--muted); font-size: 17px; }
.venue-features { display: grid; gap: 10px; margin: 30px 0; color: var(--ink); font-size: 13px; }
.venue-features span { display: flex; gap: 12px; align-items: center; }
.venue-features b { width: 34px; height: 34px; display: grid; place-items: center; background: white; border: 1px solid var(--line); border-radius: 50%; }
.venue-button { background: var(--orange); color: var(--navy); }
.map-card { overflow: hidden; background: white; border: 1px solid var(--line); border-radius: 14px; box-shadow: 0 24px 70px #0c2d461c; }
.map-card iframe { display: block; width: 100%; height: 410px; border: 0; filter: saturate(.7); }
.venue-photo { width: 100%; height: 250px; object-fit: cover; }
.map-card > div { display: flex; justify-content: space-between; padding: 17px 22px; }
.map-card span { color: var(--muted); font-size: 12px; }

.committees { max-width: none; padding-inline: max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: white; }
.committee-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
details { border: 1px solid var(--line); background: var(--paper); }
summary { cursor: pointer; display: flex; justify-content: space-between; padding: 22px 24px; color: var(--navy); font-weight: 700; list-style: none; }
summary::-webkit-details-marker { display: none; }
summary::after { content: "+"; color: var(--orange); font-size: 22px; }
details[open] summary::after { content: "−"; }
summary span { margin-left: auto; margin-right: 18px; color: var(--muted); font-size: 11px; font-weight: 500; text-transform: uppercase; }
.names { display: grid; grid-template-columns: 1fr 1fr; gap: 0 22px; padding: 6px 24px 25px; }
.names p { margin: 0; padding: 8px 0; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 13px; }
.names small { display: block; color: var(--orange); text-transform: uppercase; font-size: 9px; font-weight: 800; }
.names.compact { max-height: 500px; overflow: auto; }
.partners { padding: 55px 24px; text-align: center; background: var(--ice); }
.partners > p { color: var(--muted); font-size: 11px; text-transform: uppercase; letter-spacing: .16em; }
.partners div { display: flex; justify-content: center; gap: clamp(24px, 7vw, 90px); flex-wrap: wrap; margin-top: 25px; }
.partners span { color: #24557c; font-size: 26px; font-weight: 800; letter-spacing: -.04em; }

.participate { display: grid; grid-template-columns: 1.2fr .8fr; gap: 90px; align-items: center; padding: 100px max(24px, calc((100vw - var(--max)) / 2 + 24px)); background: var(--orange); color: var(--navy); }
.participate .kicker { color: var(--navy); opacity: .65; }
.participate h2 { font-size: clamp(38px, 4.5vw, 62px); }
.participate > div > p:last-child { max-width: 650px; }
.contact-card { padding: 34px; background: var(--navy); color: white; }
.contact-card > p { margin: 0; color: #91a9ba; font-size: 11px; text-transform: uppercase; letter-spacing: .14em; }
.contact-card > a { display: block; margin: 8px 0 30px; font: 600 clamp(22px, 2.5vw, 33px) "Source Serif 4", serif; }
.contact-card .button { background: white; }
.contact-card > div { display: flex; align-items: center; gap: 20px; flex-wrap: wrap; }
.text-link { color: #b6c7d3; font-size: 12px; text-decoration: underline; }
.floating-tools { position: fixed; z-index: 9; right: 24px; bottom: 22px; display: flex; flex-direction: column; align-items: flex-end; gap: 8px; }
.floating-tools a { display: flex; gap: 8px; align-items: center; padding: 12px 18px; border-radius: 30px; background: var(--orange); color: var(--navy); font-size: 12px; font-weight: 800; box-shadow: 0 12px 30px #00172938; transition: transform .2s; }
.floating-tools a:last-child { background: white; }
.floating-tools a:hover { transform: translateY(-2px); }

footer { display: grid; grid-template-columns: 1.2fr 1fr .6fr; gap: 60px; padding: 65px max(24px, calc((100vw - var(--max)) / 2 + 24px)) 30px; background: #03131f; color: #8da3b2; font-size: 12px; }
.footer-mark { color: white; font-size: 25px; font-weight: 800; }
footer b { color: white; }
footer > div:last-of-type { display: flex; flex-direction: column; }
footer > div:last-of-type a { color: white; margin-bottom: 8px; }
.copyright { grid-column: 1 / -1; margin-top: 25px; padding-top: 22px; border-top: 1px solid #ffffff17; }

html[dir="rtl"] body { font-family: Tahoma, Arial, sans-serif; }
html[dir="rtl"] .brand,
html[dir="rtl"] .place,
html[dir="rtl"] .venue-features span { flex-direction: row-reverse; }
html[dir="rtl"] .menu,
html[dir="rtl"] .hero-actions,
html[dir="rtl"] .countdown > div { direction: rtl; }
html[dir="rtl"] .section-label { writing-mode: vertical-lr; transform: none; }
html[dir="rtl"] .symbol { right: auto; left: 15px; }
html[dir="rtl"] .floating-tools { right: auto; left: 24px; align-items: flex-start; }

.reveal { opacity: 0; transform: translateY(18px); transition: opacity .65s ease, transform .65s ease; }
.reveal.visible { opacity: 1; transform: none; }

@media (max-width: 900px) {
  .utility-bar > div:first-child span { display: none; }
  .brand strong { font-size: 16px; }
  .institution-link { display: none; }
  .menu-toggle { display: block; }
  .menu { display: none; position: absolute; top: 100%; left: 0; right: 0; padding: 20px 24px; flex-direction: column; align-items: stretch; background: white; border-top: 1px solid var(--line); box-shadow: 0 20px 30px #0017291f; }
  .menu.open { display: flex; }
  .hero-inner { grid-template-columns: 1fr; gap: 45px; padding-top: 70px; }
  .event-card { max-width: 540px; }
  .intro-grid, .section-heading, .participate { grid-template-columns: 1fr; gap: 38px; }
  .theme-grid, .speaker-grid { grid-template-columns: 1fr 1fr; }
  .dates-section { grid-template-columns: 1fr; gap: 50px; }
  .venue-section { grid-template-columns: 1fr; gap: 45px; }
  .committee-grid { grid-template-columns: 1fr; }
  footer { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 580px) {
  .utility-bar { min-height: 34px; }
  .utility-bar > div:first-child { display: none; }
  .utility-bar { justify-content: flex-end; }
  .mini-countdown { background: none; padding-inline: 0; }
  .topbar { min-height: 76px; }
  .brand img { width: 64px; height: 50px; }
  .brand strong { font-size: 14px; }
  .brand small { display: none; }
  .hero-inner { min-height: auto; padding-block: 70px 55px; }
  .hero h1 { font-size: clamp(60px, 21vw, 90px); }
  .hero-stats { align-items: flex-start; gap: 12px; }
  .hero-stats span { text-align: center; font-size: 10px; }
  .hero-stats b { display: block; }
  .section { padding-block: 78px; }
  .intro { grid-template-columns: 1fr; }
  .section-label { display: none; }
  .intro-grid { grid-template-columns: 1fr; gap: 28px; }
  .theme-grid, .speaker-grid { grid-template-columns: 1fr; }
  .theme-card { min-height: 360px; }
  .speaker { max-width: 350px; margin: auto; }
  .timeline article { grid-template-columns: 1fr; gap: 15px; }
  .names { grid-template-columns: 1fr; }
  .participate { padding-block: 70px; }
  .contact-card { padding: 25px; }
  .map-card iframe { height: 300px; }
  .floating-tools { right: 14px; bottom: 14px; }
  .floating-tools a { padding: 11px 13px; }
  .floating-tools span { display: none; }
  footer { grid-template-columns: 1fr; gap: 25px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
}