:root {
  --navy: #071329;
  --navy-2: #0b1f43;
  --blue: #1358d8;
  --cyan: #00c7f2;
  --ice: #eaf6ff;
  --ink: #101b2e;
  --muted: #53627a;
  --line: #d8e0eb;
  --white: #ffffff;
  --shell: min(1180px, calc(100% - 40px));
  --radius: 22px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 84px; }
body { margin: 0; color: var(--ink); background: var(--white); font-family: Inter, Aptos, "Segoe UI", Arial, sans-serif; font-size: 1rem; line-height: 1.6; }
img { display: block; max-width: 100%; height: auto; }
a { color: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #ffca28; outline-offset: 4px; border-radius: 4px; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 100; left: 18px; top: 12px; transform: translateY(-150%); padding: 10px 16px; color: var(--navy); background: #ffca28; font-weight: 800; }
.skip-link:focus { transform: none; }
.page-shell { width: var(--shell); margin-inline: auto; }

.site-header { position: fixed; inset: 0 0 auto; z-index: 20; color: #fff; background: rgba(7,19,41,.88); border-bottom: 1px solid rgba(255,255,255,.14); backdrop-filter: blur(14px); }
.nav-wrap { width: var(--shell); min-height: 76px; margin: auto; display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.brand { display: inline-flex; align-items: center; gap: 12px; color: #fff; font-size: .86rem; font-weight: 700; letter-spacing: .08em; text-decoration: none; text-transform: uppercase; }
.brand-mark { display: inline-grid; place-items: center; width: 48px; height: 32px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; color: var(--cyan); font-weight: 900; letter-spacing: .02em; }
.main-menu { display: flex; align-items: center; gap: 26px; }
.main-menu a { position: relative; color: rgba(255,255,255,.85); font-size: .88rem; font-weight: 650; text-decoration: none; }
.main-menu a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -8px; height: 2px; background: var(--cyan); transition: right .2s ease; }
.main-menu a:hover::after, .main-menu a[aria-current="true"]::after { right: 0; }
.main-menu a:hover { color: #fff; }
.menu-toggle { display: none; width: 44px; height: 44px; padding: 10px; border: 0; color: #fff; background: transparent; }
.menu-toggle span:not(.sr-only) { display: block; height: 2px; margin: 5px 0; background: currentColor; }

.hero { position: relative; min-height: 820px; padding: 150px 0 84px; overflow: hidden; display: grid; align-items: center; color: #fff; background: var(--navy); }
.hero-media { position: absolute; inset: 0; background: linear-gradient(90deg, rgba(7,19,41,.99) 0%, rgba(7,19,41,.9) 42%, rgba(7,19,41,.2) 78%), linear-gradient(0deg, rgba(7,19,41,.94), transparent 52%), url("hero-car.jpg") right center / min(69vw, 1080px) auto no-repeat; transform: scale(1.025); }
.hero-glow { position: absolute; width: 60vw; height: 60vw; right: -24vw; top: -24vw; border-radius: 50%; background: rgba(0,199,242,.12); filter: blur(30px); }
.hero-content { position: relative; z-index: 1; display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(290px, .65fr); align-items: end; gap: clamp(36px, 8vw, 112px); }
.eyebrow, .section-kicker { margin: 0 0 16px; color: var(--blue); font-size: .78rem; font-weight: 850; letter-spacing: .17em; text-transform: uppercase; }
.hero .eyebrow { color: var(--cyan); }
.hero h1 { max-width: 820px; margin: 0 0 32px; font-size: clamp(3.4rem, 7.8vw, 7.5rem); line-height: .85; letter-spacing: -.07em; text-transform: uppercase; }
.hero h1 span { display: inline-block; color: transparent; -webkit-text-stroke: 1px rgba(255,255,255,.65); }
.event-meta { display: flex; gap: 18px; margin-bottom: 34px; }
.event-meta > div { display: flex; align-items: center; gap: 12px; min-width: 190px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.22); border-radius: 14px; background: rgba(255,255,255,.07); backdrop-filter: blur(8px); }
.event-meta strong { color: var(--cyan); font-size: 1.55rem; letter-spacing: -.04em; }
.event-meta span { font-size: .73rem; line-height: 1.25; letter-spacing: .08em; text-transform: uppercase; }
.button { display: inline-flex; align-items: center; justify-content: center; gap: 22px; min-height: 52px; padding: 13px 22px; border-radius: 999px; font-weight: 800; text-decoration: none; }
.button-primary { color: var(--navy); background: var(--cyan); }
.button-primary:hover { background: #4be0ff; }
.button-primary span { font-size: 1.2rem; }
.hero-panel { padding: 28px; border: 1px solid rgba(255,255,255,.18); border-radius: var(--radius); background: rgba(7,19,41,.7); backdrop-filter: blur(18px); }
.hero-panel > p { margin: 0 0 24px; color: rgba(255,255,255,.78); font-size: 1.05rem; }
.hero-logos { display: grid; gap: 15px; }
.hero-logos img { width: 100%; padding: 14px; border-radius: 12px; background: #fff; object-fit: contain; }
.hero-logos img:last-child { height: 106px; }
.hero-index { position: absolute; left: 0; bottom: 36px; color: rgba(255,255,255,.26); font-size: .72rem; font-weight: 800; letter-spacing: .25em; writing-mode: vertical-rl; }

.section { padding: clamp(76px, 10vw, 130px) 0; }
.intro { background: var(--white); }
.intro-grid { display: grid; grid-template-columns: 1fr 1fr; gap: clamp(50px, 10vw, 130px); }
h2 { margin: 0; font-size: clamp(2.25rem, 5vw, 4.9rem); line-height: .98; letter-spacing: -.055em; }
.intro-copy > p { margin: 4px 0 36px; color: var(--muted); font-size: clamp(1.08rem, 1.6vw, 1.3rem); }
.fact-row { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid var(--line); }
.fact-row div { padding: 22px 10px 0 0; }
.fact-row strong { display: block; color: var(--blue); font-size: 1.8rem; }
.fact-row span { color: var(--muted); font-size: .78rem; letter-spacing: .05em; text-transform: uppercase; }

.agenda { background: #f3f7fb; }
.section-heading { display: grid; grid-template-columns: minmax(0, 1fr) minmax(260px, 420px); align-items: end; gap: 50px; margin-bottom: 56px; }
.section-heading > p { margin: 0 0 4px; color: var(--muted); }
.agenda-note { text-align: right; }
.agenda-note span { color: var(--cyan); }
.day-block + .day-block { margin-top: 84px; }
.day-heading { display: grid; grid-template-columns: 100px 1fr auto; align-items: center; gap: 22px; padding: 25px 30px; color: #fff; background: var(--navy-2); border-radius: 16px 16px 0 0; }
.day-heading-alt { background: var(--blue); }
.day-heading p, .day-heading h3 { margin: 0; }
.day-heading p { color: var(--cyan); font-size: .74rem; font-weight: 850; letter-spacing: .13em; text-transform: uppercase; }
.day-heading h3 { font-size: clamp(1.25rem, 2.4vw, 2rem); }
.day-heading > span { font-size: .82rem; font-weight: 700; letter-spacing: .08em; text-transform: uppercase; opacity: .72; }
.timeline { margin: 0; padding: 0; list-style: none; border: 1px solid var(--line); border-top: 0; border-radius: 0 0 16px 16px; background: #fff; overflow: hidden; }
.timeline li { position: relative; display: grid; grid-template-columns: 215px 1fr; min-height: 120px; border-top: 1px solid var(--line); }
.timeline li:first-child { border-top: 0; }
.timeline time { padding: 26px 30px; color: var(--navy-2); background: var(--ice); font-size: 1.02rem; font-weight: 850; }
.timeline time small { display: block; font-size: .72rem; font-weight: 750; }
.timeline li > div { padding: 22px 30px 24px; }
.timeline h4 { margin: 0 0 4px; font-size: 1.08rem; }
.timeline p { margin: 0; color: var(--muted); }
.timeline .featured > div { border-left: 4px solid var(--cyan); }
.tag { display: inline-flex; margin-top: 12px; padding: 5px 10px; color: #794807; background: #fff1c2; border-radius: 999px; font-size: .7rem; font-weight: 800; letter-spacing: .03em; text-transform: uppercase; }

.registration { color: #fff; background: var(--blue); }
.registration-card { display: grid; grid-template-columns: 1fr 370px; align-items: center; gap: clamp(40px, 10vw, 130px); }
.registration .light { color: #bff5ff; }
.registration h2 { margin-bottom: 24px; }
.registration p:not(.section-kicker) { max-width: 680px; margin: 0; color: rgba(255,255,255,.84); font-size: 1.1rem; }
.status-card { display: flex; align-items: center; gap: 18px; min-height: 116px; padding: 24px; color: var(--ink); background: #fff; border-radius: 18px; box-shadow: 0 24px 60px rgba(7,19,41,.24); }
.status-icon { display: grid; place-items: center; flex: 0 0 54px; height: 54px; border-radius: 50%; color: var(--navy); background: var(--cyan); font-size: 1.7rem; }
.status-card strong, .status-card span:not(.status-icon) { display: block; }
.status-card span:not(.status-icon) { color: var(--muted); font-size: .85rem; }

.media .section-heading > p { max-width: 380px; }
.media-placeholder { display: grid; grid-template-columns: minmax(320px, 1.2fr) 1fr; align-items: stretch; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.media-visual { min-height: 330px; padding: 34px; display: flex; align-items: end; justify-content: space-between; color: #fff; background: linear-gradient(135deg, rgba(0,199,242,.25), transparent 46%), repeating-linear-gradient(120deg, transparent 0 44px, rgba(255,255,255,.07) 45px 46px), var(--navy); }
.media-visual span { display: grid; place-items: center; width: 76px; height: 76px; border: 1px solid rgba(255,255,255,.55); border-radius: 50%; font-size: 1.2rem; }
.media-visual b { font-size: 1.5rem; letter-spacing: -.03em; }
.media-placeholder > div:last-child { padding: clamp(32px, 6vw, 70px); align-self: center; }
.media-placeholder h3 { margin: 18px 0 10px; font-size: 1.8rem; }
.media-placeholder p { margin: 0; color: var(--muted); }
.tag-blue { margin: 0; color: #084a69; background: #d9f7ff; }

.contact { background: #eef3f8; }
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; align-items: center; gap: clamp(50px, 10vw, 140px); }
.contact-grid > div:first-child > p:last-child { max-width: 610px; color: var(--muted); font-size: 1.1rem; }
.contact-card { display: flex; gap: 20px; padding: 30px; border-left: 4px solid var(--cyan); border-radius: 4px 18px 18px 4px; background: #fff; box-shadow: 0 16px 40px rgba(19,43,82,.08); }
.contact-card > span { color: var(--blue); font-size: 1.6rem; }
.contact-card p { margin: 0 0 4px; color: var(--muted); font-size: .82rem; text-transform: uppercase; letter-spacing: .07em; }
.contact-card strong { display: block; }

.site-footer { padding: 64px 0 28px; color: rgba(255,255,255,.76); background: var(--navy); }
.footer-grid { display: grid; grid-template-columns: 1fr .55fr .45fr; align-items: center; gap: 44px; padding-bottom: 48px; }
.footer-logos { display: grid; grid-template-columns: minmax(220px, 1.65fr) minmax(120px, .75fr); align-items: center; gap: 16px; }
.footer-logos img { width: 100%; max-height: 104px; padding: 12px; border-radius: 10px; background: #fff; object-fit: contain; }
.footer-grid p { margin: 2px 0; }
.footer-grid a { justify-self: end; color: #fff; font-weight: 750; text-decoration-color: var(--cyan); text-underline-offset: 5px; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 24px; border-top: 1px solid rgba(255,255,255,.14); font-size: .8rem; }
.footer-bottom a { color: #fff; text-decoration: none; }

@media (max-width: 900px) {
  :root { --shell: min(100% - 30px, 720px); }
  .menu-toggle { display: block; }
  .main-menu { position: absolute; top: 76px; left: 0; right: 0; padding: 18px 20px 24px; display: none; flex-direction: column; align-items: stretch; gap: 0; background: var(--navy); border-bottom: 1px solid rgba(255,255,255,.16); }
  .main-menu.open { display: flex; }
  .main-menu a { padding: 13px 0; font-size: 1rem; }
  .hero { min-height: auto; padding-top: 130px; }
  .hero-media { background: linear-gradient(180deg, rgba(7,19,41,.46), rgba(7,19,41,.98) 52%), url("hero-car.jpg") top right / auto 430px no-repeat; opacity: .9; }
  .hero-content { grid-template-columns: 1fr; }
  .hero-panel { max-width: 520px; }
  .hero h1 { margin-top: 220px; }
  .intro-grid, .contact-grid { grid-template-columns: 1fr; }
  .section-heading { grid-template-columns: 1fr; gap: 22px; }
  .agenda-note { text-align: left; }
  .registration-card { grid-template-columns: 1fr; }
  .status-card { max-width: 440px; }
  .media-placeholder { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-logos { grid-column: 1 / -1; max-width: 640px; }
  .footer-grid a { justify-self: start; }
}

@media (max-width: 620px) {
  :root { --shell: calc(100% - 26px); }
  .nav-wrap { min-height: 68px; }
  .brand > span:last-child { display: none; }
  .main-menu { top: 68px; }
  .hero { padding: 105px 0 64px; }
  .hero-media { background-size: auto 330px; }
  .hero h1 { margin-top: 170px; font-size: clamp(3rem, 15vw, 4.5rem); }
  .event-meta { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
  .event-meta > div { min-width: 0; padding: 12px; }
  .event-meta strong { font-size: 1.25rem; }
  .hero-panel { padding: 20px; }
  .hero-index { display: none; }
  .section { padding: 72px 0; }
  h2 { font-size: clamp(2.25rem, 12vw, 3.3rem); }
  .fact-row { gap: 8px; }
  .fact-row strong { font-size: 1.45rem; }
  .fact-row span { font-size: .68rem; }
  .day-heading { grid-template-columns: 1fr; gap: 2px; padding: 21px; }
  .day-heading > span { margin-top: 8px; }
  .timeline li { grid-template-columns: 1fr; }
  .timeline time { padding: 18px 20px 8px; color: var(--blue); background: #fff; }
  .timeline time small { display: inline; }
  .timeline li > div { padding: 4px 20px 22px; }
  .timeline .featured > div { border-left: 0; }
  .media-visual { min-height: 250px; }
  .footer-grid { grid-template-columns: 1fr; gap: 28px; }
  .footer-logos { grid-column: auto; grid-template-columns: 1fr; max-width: 360px; }
  .footer-bottom { flex-direction: column; gap: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}

@media print {
  .site-header, .button, .site-footer { display: none; }
  .hero { min-height: auto; padding: 40px 0; color: #000; background: #fff; }
  .hero-media, .hero-glow, .hero-panel, .hero-index { display: none; }
  .hero h1 span { color: #000; -webkit-text-stroke: 0; }
  .section { padding: 36px 0; }
  .agenda { background: #fff; }
  .timeline li { break-inside: avoid; }
}

/* Language tabs stay visible on desktop and mobile. */
.nav-wrap { gap: 18px; }
.brand { flex-shrink: 0; }
.main-menu { margin-left: auto; gap: 20px; }
.language-switcher { display: inline-flex; flex-shrink: 0; gap: 3px; padding: 3px; border: 1px solid rgba(255,255,255,.3); border-radius: 9px; }
.language-switcher a { display: inline-flex; align-items: center; justify-content: center; min-height: 36px; padding: 5px 9px; border-radius: 5px; color: #fff; font-size: .78rem; font-weight: 700; text-decoration: none; }
.language-switcher a:hover { background: rgba(255,255,255,.14); }
.language-switcher a[aria-current="page"] { color: var(--navy); background: var(--cyan); }
@media (max-width: 1160px) {
  .menu-toggle { display: block; order: 3; flex-shrink: 0; }
  .language-switcher { margin-left: auto; }
  .main-menu { position: absolute; top: 76px; left: 0; right: 0; margin: 0; padding: 18px 20px 24px; display: none; flex-direction: column; align-items: stretch; gap: 0; background: var(--navy); border-bottom: 1px solid rgba(255,255,255,.16); }
  .main-menu.open { display: flex; }
  .main-menu a { padding: 13px 0; font-size: 1rem; }
}
@media (max-width: 620px) {
  .nav-wrap { gap: 10px; }
  .main-menu { top: 68px; }
  .language-switcher a { min-height: 38px; padding-inline: 8px; }
}

/* Keep all three language tabs readable on narrow phones. */
@media (max-width: 380px) {
  .nav-wrap { gap: 5px; }
  .language-switcher { gap: 0; padding: 2px; }
  .language-switcher a { padding-inline: 6px; font-size: .72rem; }
  .menu-toggle { width: 38px; padding-inline: 7px; }
}

/* Conference registration */
.ara-reg-heading { max-width: 880px; margin-bottom: 38px; }
.ara-registration-form { padding: clamp(22px,4vw,52px); color: var(--ink); background: #fff; border-radius: var(--radius); box-shadow: 0 24px 70px rgba(7,19,41,.18); }
.registration .ara-registration-form p { color: var(--muted); font-size: 1rem; max-width: none; }
.registration p.ara-reg-notice, .registration p.ara-reg-success { max-width: none; padding: 18px 24px; margin: 0 0 24px; color: var(--navy); background: #eaf6ff; border-radius: 12px; font-size: 1rem; }
.ara-reg-group { padding: 28px 0; border-bottom: 1px solid var(--line); }
.ara-reg-group[hidden] { display: none; }
.ara-reg-group h3 { margin: 0 0 20px; font-size: clamp(1.25rem,2vw,1.6rem); line-height: 1.25; letter-spacing: -.025em; color: var(--navy-2); }
.ara-reg-grid { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px 28px; }
.ara-reg-group > p { margin-bottom: 22px !important; }
.ara-reg-field { min-width: 0; }
.ara-reg-field > label, .ara-reg-field legend { display: block; margin-bottom: 8px; font-size: .94rem; font-weight: 650; line-height: 1.5; }
.ara-reg-field input:not([type=radio]), .ara-reg-field select, .ara-reg-field textarea { width: 100%; min-height: 48px; padding: 12px 14px; border: 1px solid #aebcd0; border-radius: 8px; color: var(--ink); background: #fff; font: inherit; line-height: 1.4; }
.ara-reg-field textarea { resize: vertical; }
.ara-reg-field fieldset { margin: 0; padding: 0; border: 0; min-width: 0; }
.ara-reg-radio, .ara-reg-textarea { grid-column: 1 / -1; }
.ara-reg-choices { display: flex; flex-wrap: wrap; gap: 12px; }
.ara-reg-choices label { display: inline-flex; align-items: center; gap: 10px; min-height: 46px; padding: 10px 16px; border: 1px solid var(--line); border-radius: 8px; cursor: pointer; background: #f6f9fc; }
.ara-reg-choices label:has(input:checked) { border-color: var(--blue); background: var(--ice); }
.ara-reg-choices input, .ara-reg-consent input { flex: 0 0 auto; width: 19px; height: 19px; margin: 0; accent-color: var(--blue); }
[data-reg-group=participation] .ara-reg-choices { flex-direction: column; align-items: flex-start; }
[data-reg-group=participation] .ara-reg-field legend { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
[data-reg-group=activities] .ara-reg-field + .ara-reg-field { padding-top: 20px; border-top: 1px solid var(--line); }
.ara-reg-consent a { color: var(--blue); text-underline-offset: 3px; }
.ara-reg-consent-label { display: flex; align-items: flex-start; gap: 12px; margin-top: 16px; line-height: 1.6; }
.ara-reg-consent-label input { margin-top: 4px; }
.ara-reg-submit { margin-top: 28px; border: 0; font: inherit; font-weight: 800; cursor: pointer; }
.ara-reg-submit:disabled { color: #53627a; background: #e5ebf2; cursor: not-allowed; }
.ara-reg-error { display: block; margin-top: 8px; color: #ad152b; font-size: .9rem; }
.ara-reg-error-summary { margin-top: 24px; padding: 16px; border: 2px solid #ad152b; border-radius: 8px; }
.ara-reg-field [aria-invalid=true] { border-color: #ad152b; }
.ara-reg-trap { position: absolute; width: 1px; height: 1px; overflow: hidden; clip-path: inset(50%); }
@media (max-width: 620px) { .ara-reg-grid { grid-template-columns: 1fr; } .ara-registration-form { padding: 22px 18px; } .ara-reg-submit { width: 100%; } [data-reg-group=participation] .ara-reg-choices { align-items: stretch; } }