:root {
  --ink: #071e2d;
  --ink-soft: #17384a;
  --teal: #0d7d83;
  --aqua: #7cd7d5;
  --coral: #f26f55;
  --cream: #f7f2e8;
  --paper: #fffdf8;
  --line: rgba(7, 30, 45, .14);
  --shadow: 0 24px 70px rgba(7, 30, 45, .12);
  --radius: 24px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
img { display: block; max-width: 100%; }

.skip-link {
  position: fixed;
  top: 10px;
  left: 10px;
  z-index: 100;
  padding: .75rem 1rem;
  background: #fff;
  color: var(--ink);
  border-radius: 8px;
  transform: translateY(-160%);
}
.skip-link:focus { transform: translateY(0); }

.site-header {
  position: absolute;
  inset: 0 0 auto;
  z-index: 10;
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(1180px, calc(100% - 40px));
  margin: 0 auto;
  padding: 24px 0;
  color: #fff;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -.03em;
  text-decoration: none;
}
.brand > span:last-child > span { color: var(--aqua); }
.brand-mark {
  display: grid;
  place-items: center;
  width: 42px;
  aspect-ratio: 1;
  border: 1px solid rgba(255,255,255,.55);
  border-radius: 13px;
  background: rgba(255,255,255,.1);
  font-size: .72rem;
  letter-spacing: .06em;
  backdrop-filter: blur(10px);
}
.site-header nav { display: flex; align-items: center; gap: 28px; }
.site-header nav a { font-size: .88rem; font-weight: 700; text-decoration: none; }
.site-header nav a:not(.nav-cta):hover { color: var(--aqua); }
.nav-cta {
  padding: 11px 17px;
  border: 1px solid rgba(255,255,255,.58);
  border-radius: 999px;
  background: rgba(255,255,255,.1);
}
.menu-button, .mobile-menu { display: none; }

.hero {
  position: relative;
  display: grid;
  min-height: 780px;
  overflow: hidden;
  color: #fff;
  background: var(--ink);
}
.hero-photo, .hero-overlay { position: absolute; inset: 0; }
.hero-photo {
  background: url("assets/conference-travel-hero.webp") center center / cover no-repeat;
  transform: scale(1.01);
}
.hero-overlay {
  background:
    linear-gradient(90deg, rgba(5,24,37,.98) 0%, rgba(5,24,37,.88) 34%, rgba(5,24,37,.35) 66%, rgba(5,24,37,.12) 100%),
    linear-gradient(0deg, rgba(5,24,37,.68) 0%, transparent 42%);
}
.hero-content {
  position: relative;
  z-index: 2;
  align-self: center;
  width: min(1180px, calc(100% - 40px));
  margin: 70px auto 0;
}
.hero-content > * { max-width: 680px; }
.eyebrow {
  margin: 0 0 20px;
  color: var(--aqua);
  font-size: .76rem;
  font-weight: 850;
  letter-spacing: .14em;
  text-transform: uppercase;
}
.eyebrow.dark { color: var(--teal); }
h1, h2, h3, p { margin-top: 0; }
h1, h2 {
  font-family: Georgia, "Times New Roman", serif;
  font-weight: 500;
  letter-spacing: -.045em;
  line-height: 1.02;
}
h1 { margin-bottom: 25px; font-size: clamp(3.2rem, 6vw, 5.8rem); }
h2 { margin-bottom: 22px; font-size: clamp(2.35rem, 4.2vw, 4.2rem); }
h3 { line-height: 1.2; }
.hero-copy { margin-bottom: 30px; font-size: clamp(1.05rem, 1.7vw, 1.25rem); line-height: 1.7; color: rgba(255,255,255,.82); }
.hero-actions { display: flex; gap: 13px; margin-top: 28px; }
.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 52px;
  padding: 0 23px;
  border: 1px solid transparent;
  border-radius: 999px;
  font-size: .9rem;
  font-weight: 800;
  text-decoration: none;
  transition: transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.button:hover { transform: translateY(-2px); }
.button-primary { background: var(--coral); color: #fff; box-shadow: 0 12px 32px rgba(242,111,85,.28); }
.button-secondary { border-color: rgba(255,255,255,.4); color: #fff; background: rgba(255,255,255,.08); }
.button-light { background: #fff; color: var(--ink); }
.availability-note { display: flex; align-items: center; gap: 10px; margin-top: 25px; color: rgba(255,255,255,.65); font-size: .8rem; }
.availability-note span { width: 8px; height: 8px; border-radius: 50%; background: var(--aqua); box-shadow: 0 0 0 5px rgba(124,215,213,.14); }

.signal-bar {
  position: relative;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  width: min(1080px, calc(100% - 40px));
  margin: -58px auto 0;
  padding: 27px 30px;
  border-radius: 18px;
  background: #fff;
  box-shadow: var(--shadow);
}
.signal-bar p { margin: 0; padding: 0 28px; border-right: 1px solid var(--line); }
.signal-bar p:last-child { border: 0; }
.signal-bar strong, .signal-bar span { display: block; }
.signal-bar strong { margin-bottom: 5px; font-size: .92rem; }
.signal-bar span { color: #5a6e78; font-size: .78rem; line-height: 1.45; }

.section { width: min(1180px, calc(100% - 40px)); margin: 0 auto; padding: 120px 0; }
.section-intro { display: grid; grid-template-columns: 1fr .85fr; column-gap: 9%; align-items: end; margin-bottom: 55px; }
.section-intro .eyebrow { grid-column: 1 / -1; }
.section-intro h2 { margin-bottom: 0; }
.section-intro > p:last-child { color: #526b77; font-size: 1.02rem; }
.section-intro.compact { width: min(850px, 100%); grid-template-columns: 1fr; }
.section-intro.compact h2 { margin-bottom: 20px; }

.card-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.specialty-card {
  position: relative;
  min-height: 440px;
  padding: 32px;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  box-shadow: 0 12px 40px rgba(7,30,45,.06);
}
.specialty-card::after {
  content: "";
  position: absolute;
  right: -55px;
  bottom: -70px;
  width: 180px;
  height: 180px;
  border-radius: 50%;
  background: color-mix(in srgb, var(--card-color) 12%, transparent);
}
.medical-card { --card-color: #f26f55; }
.science-card { --card-color: #0d7d83; }
.engineering-card { --card-color: #4056a1; }
.card-number { color: #82929b; font-size: .72rem; font-weight: 800; letter-spacing: .12em; }
.icon-orbit {
  display: grid;
  place-items: center;
  width: 82px;
  height: 82px;
  margin: 44px 0 34px;
  border: 1px solid color-mix(in srgb, var(--card-color) 45%, transparent);
  border-radius: 50%;
  color: var(--card-color);
  background: color-mix(in srgb, var(--card-color) 8%, white);
  font: 300 2.6rem Georgia, serif;
}
.atom { box-shadow: 0 0 0 10px rgba(13,125,131,.05), 0 0 0 20px rgba(13,125,131,.025); }
.gear { transform: rotate(45deg); border-radius: 24px; }
.specialty-card h3 { font-size: 1.35rem; }
.specialty-card p { color: #536b77; font-size: .92rem; }
.specialty-card ul { position: relative; z-index: 1; padding: 0; margin: 24px 0 0; list-style: none; }
.specialty-card li { padding: 9px 0; border-top: 1px solid var(--line); font-size: .82rem; font-weight: 700; }

.itinerary { width: 100%; max-width: none; padding: 30px 20px 120px; background: var(--cream); }
.itinerary-panel { display: grid; grid-template-columns: .85fr 1.15fr; gap: 9%; width: min(1180px, 100%); margin: 0 auto; padding: 80px; border-radius: 30px; background: #fff; }
.itinerary-copy > p:not(.eyebrow) { color: #526b77; }
.text-link { display: inline-block; margin-top: 22px; color: var(--teal); font-weight: 800; text-decoration: none; }
.journey-list { margin: 0; padding: 0; list-style: none; }
.journey-list li { display: grid; grid-template-columns: 48px 1fr; gap: 18px; padding: 21px 0; border-top: 1px solid var(--line); }
.journey-list li:first-child { border-top: 0; }
.journey-list > li > span { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 50%; color: var(--teal); background: rgba(13,125,131,.09); font-size: .7rem; font-weight: 900; }
.journey-list strong { display: block; margin: 1px 0 4px; }
.journey-list p { margin: 0; color: #667b84; font-size: .85rem; }

.principles { display: grid; grid-template-columns: repeat(4, 1fr); gap: 1px; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius); background: var(--line); }
.principles article { min-height: 280px; padding: 32px 26px; background: #fff; }
.principles article > span { display: grid; place-items: center; width: 45px; height: 45px; margin-bottom: 60px; border-radius: 14px; color: var(--teal); background: rgba(13,125,131,.09); font-size: 1.2rem; }
.principles h3 { font-size: 1.05rem; }
.principles p { margin-bottom: 0; color: #607680; font-size: .84rem; }

.about { width: 100%; max-width: none; padding: 0 20px 120px; }
.about-card { display: grid; grid-template-columns: 280px 1fr; gap: 8%; align-items: center; width: min(1180px, 100%); margin: 0 auto; padding: 80px; border-radius: 30px; color: #fff; background: var(--ink); }
.about-card > div:last-child { max-width: 720px; }
.about-card p:not(.eyebrow) { color: rgba(255,255,255,.72); }
.about-badge { display: grid; place-items: center; aspect-ratio: 1; border: 1px solid rgba(124,215,213,.5); border-radius: 50%; box-shadow: inset 0 0 0 18px rgba(124,215,213,.05), 0 0 0 1px rgba(255,255,255,.08); }
.about-badge strong { color: var(--aqua); font: 500 3.4rem Georgia, serif; }
.about-badge span { font-size: .68rem; font-weight: 900; letter-spacing: .22em; }

.future { display: grid; grid-template-columns: .8fr 1.2fr; gap: 9%; padding-top: 10px; }
.future-grid { display: grid; gap: 12px; }
.future-grid p { margin: 0; padding: 22px 25px; border: 1px solid var(--line); border-radius: 16px; color: #657983; font-size: .86rem; }
.future-grid span { display: block; margin-bottom: 3px; color: var(--ink); font-weight: 850; font-size: .98rem; }

.contact {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  padding: 80px max(20px, calc((100% - 1180px) / 2));
  color: #fff;
  background: var(--teal);
}
.contact h2 { max-width: 700px; margin: 0; }
.contact .eyebrow { color: #d8ffff; }

.site-footer { padding: 70px max(20px, calc((100% - 1180px) / 2)) 28px; color: rgba(255,255,255,.78); background: #041520; }
.footer-top { display: flex; align-items: center; justify-content: space-between; gap: 30px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,.13); }
.footer-brand { color: #fff; }
.footer-top p { margin: 15px 0 0; font-size: .85rem; }
.footer-top img { width: 170px; height: auto; padding: 12px; border-radius: 12px; background: #fff; }
.legal { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 45px; padding: 34px 0; font-size: .72rem; line-height: 1.7; }
.legal p { margin: 0; }
.footer-bottom { display: flex; justify-content: space-between; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.13); font-size: .75rem; }
.footer-bottom p { margin: 0; }

@media (max-width: 900px) {
  .site-header nav { display: none; }
  .menu-button { display: block; padding: 9px 14px; border: 1px solid rgba(255,255,255,.5); border-radius: 999px; color: #fff; background: rgba(255,255,255,.1); font: inherit; font-size: .8rem; font-weight: 800; }
  .mobile-menu { position: absolute; z-index: 9; top: 86px; left: 20px; right: 20px; padding: 16px; border-radius: 16px; background: #fff; box-shadow: var(--shadow); }
  .mobile-menu:not([hidden]) { display: grid; }
  .mobile-menu a { padding: 12px; text-decoration: none; font-weight: 750; }
  .hero { min-height: 740px; }
  .hero-overlay { background: linear-gradient(90deg, rgba(5,24,37,.95) 0%, rgba(5,24,37,.67) 72%, rgba(5,24,37,.3) 100%), linear-gradient(0deg, rgba(5,24,37,.75), transparent 55%); }
  .signal-bar { grid-template-columns: 1fr; padding: 14px 24px; }
  .signal-bar p { padding: 15px 0; border-right: 0; border-bottom: 1px solid var(--line); }
  .section-intro, .itinerary-panel, .future { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .specialty-card { min-height: auto; }
  .itinerary-panel, .about-card { padding: 55px 35px; }
  .principles { grid-template-columns: repeat(2, 1fr); }
  .about-card { grid-template-columns: 180px 1fr; }
  .future { gap: 30px; }
}

@media (max-width: 620px) {
  .hero { min-height: 780px; }
  .hero-photo { background-position: 64% center; opacity: .8; }
  .hero-overlay { background: linear-gradient(90deg, rgba(5,24,37,.96) 0%, rgba(5,24,37,.78) 100%), linear-gradient(0deg, rgba(5,24,37,.9), transparent); }
  .hero-content { margin-top: 90px; }
  .hero-actions { align-items: stretch; flex-direction: column; max-width: 300px; }
  .section { padding: 85px 0; }
  .section-intro { display: block; margin-bottom: 35px; }
  .itinerary { padding: 20px 12px 85px; }
  .itinerary-panel { padding: 42px 22px; }
  .principles { grid-template-columns: 1fr; }
  .principles article { min-height: 0; }
  .principles article > span { margin-bottom: 30px; }
  .about { padding: 0 12px 85px; }
  .about-card { grid-template-columns: 1fr; padding: 48px 24px; }
  .about-badge { width: 190px; }
  .contact { align-items: flex-start; flex-direction: column; padding-top: 65px; padding-bottom: 65px; }
  .legal { grid-template-columns: 1fr; }
  .footer-top { align-items: flex-start; flex-direction: column; }
}

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