:root {
  --navy: #0e2347;
  --navy-2: #112f62;
  --teal: #14a8c8;
  --teal-soft: #d9f4f9;
  --red: #d23b43;
  --gold: #f0b323;
  --text: #183046;
  --muted: #607286;
  --bg: #f6fafc;
  --white: #ffffff;
  --shadow: 0 16px 40px rgba(14, 35, 71, 0.10);
  --radius: 22px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: 'Inter', system-ui, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f7fbfd 0%, #ffffff 45%, #f3f7fb 100%);
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
.container { width: min(1180px, calc(100% - 32px)); margin: 0 auto; }
.site-shell { overflow: clip; }
.hero {
  position: relative;
  background:
    linear-gradient(135deg, rgba(14,35,71,0.96), rgba(17,47,98,0.88) 48%, rgba(20,168,200,0.72)),
    url('../images/chicago-skyline.jpg') center/cover;
  color: var(--white);
  padding-bottom: 64px;
}
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0;
  gap: 20px;
}
.brand { display: flex; align-items: center; gap: 14px; min-width: 0; }
.brand img { width: 68px; height: auto; }
.brand span { display: grid; gap: 3px; }
.brand strong { font-size: 1.05rem; }
.brand em { font-style: normal; color: rgba(255,255,255,0.8); font-size: 0.92rem; }
.menu { display: flex; align-items: center; gap: 18px; font-weight: 600; }
.menu a { color: rgba(255,255,255,0.86); }
.menu a:hover { color: #fff; }
.nav-toggle { display: none; }
.hero-content {
  display: grid;
  grid-template-columns: 1.2fr 0.9fr;
  gap: 36px;
  align-items: center;
  padding: 44px 0 0;
}
.eyebrow, .section-kicker {
  letter-spacing: .12em;
  text-transform: uppercase;
  font-size: .78rem;
  font-weight: 800;
}
.eyebrow { color: #89e4f4; }
.hero h1 {
  font-size: clamp(2.3rem, 5vw, 4.6rem);
  line-height: 1.02;
  margin: 12px 0 18px;
  max-width: 12ch;
}
.lead { font-size: 1.08rem; line-height: 1.8; color: rgba(255,255,255,0.85); max-width: 62ch; }
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; margin: 28px 0; }
.button {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 14px 20px; border-radius: 999px; font-weight: 700;
}
.button.primary { background: var(--gold); color: var(--navy); }
.button.ghost { border: 1px solid rgba(255,255,255,0.28); color: #fff; background: rgba(255,255,255,0.08); }
.hero-meta { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; color: rgba(255,255,255,0.84); }
.hero-side { display: grid; gap: 18px; }
.hero-image, .hero-card, .highlight-panel, .date-card, .committee-card, .placeholder-card, .note-card, .poster-frame {
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.hero-image { overflow: hidden; border: 1px solid rgba(255,255,255,0.12); }
.hero-card {
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.14);
  padding: 22px;
  backdrop-filter: blur(14px);
}
.section { padding: 44px 0; }
.section h2 { font-size: clamp(1.9rem, 4vw, 3rem); margin: 10px 0 18px; color: var(--navy); }
.section-grid { display: grid; grid-template-columns: 1.1fr .9fr; gap: 34px; align-items: start; }
.alt { background: linear-gradient(180deg, #edf8fb, #f9fbfd); }
.highlight-panel, .note-card, .placeholder-card, .date-card, .committee-card, .poster-frame {
  background: #fff;
  padding: 24px;
  border: 1px solid rgba(17,47,98,0.08);
}
.weather-panel {
  display: flex;
  align-items: center;
  justify-content: center;
}
.weather-panel img {
  width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: contain;
  border-radius: 16px;
}
.chips { display: grid; grid-template-columns: 1fr; gap: 4px; }
.chip {
  padding: 8px 12px; border-radius: 16px; background: #fff;
  border: 1px solid rgba(20,168,200,0.18); box-shadow: 0 10px 22px rgba(20,168,200,0.08);
  font-weight: 600; line-height: 1.2;
}
.date-grid, .committee-grid, .placeholder-grid { display: grid; gap: 18px; }
.date-grid { grid-template-columns: repeat(4, 1fr); }
.date-label { display: block; color: var(--muted); font-size: .92rem; margin-bottom: 12px; }
.feature-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; margin-top: 24px; }
.stacked-media { display: grid; gap: 16px; }
.stacked-media img, .gallery-grid img, .poster-frame img { border-radius: 18px; }
.gallery-wrap { display: grid; gap: 24px; }
.gallery-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.gallery-grid img { width: 100%; height: 220px; object-fit: cover; }
.committee-grid { grid-template-columns: repeat(2, 1fr); }
.committee-card-wide { grid-column: 1 / -1; }
.committee-card h3 { margin-top: 0; color: var(--navy-2); }
.poster-layout, .support-layout { display: grid; grid-template-columns: 1fr .95fr; gap: 28px; align-items: start; }
.cfp-layout { display: grid; gap: 20px; }
.cfp-intro { max-width: none; width: 100%; }
.cfp-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.plain-list { padding-left: 18px; line-height: 1.7; }
.logo-row { display: flex; align-items: stretch; justify-content: space-between; gap: 24px; width: 100%; margin-top: 12px; }
.logo-left { flex: 0 0 auto; min-width: 170px; }
.logo-cluster { display: flex; align-items: stretch; gap: 24px; flex: 1 1 auto; justify-content: space-between; }
.logo-tile { display: flex; align-items: center; justify-content: center; min-height: 92px; padding: 0; }
.logo-row img { width: auto; max-width: 100%; height: 84px; object-fit: contain; }
.logo-left img { transform: none; transform-origin: center; }
.logo-cluster .logo-tile:nth-child(2) img, .logo-cluster .logo-tile:nth-child(3) img { transform: scale(1.18); transform-origin: center; }
.poster-frame { padding: 14px; }
.placeholder-grid { grid-template-columns: repeat(3, 1fr); }
.qr-card img { margin-top: 16px; max-width: 250px; }
.support-list { display: flex; flex-wrap: wrap; gap: 12px; }
.support-list span {
  padding: 10px 14px; background: rgba(20,168,200,0.08); border-radius: 999px; border: 1px solid rgba(20,168,200,0.14); font-weight: 600;
}
.site-footer {
  background: var(--navy);
  color: rgba(255,255,255,0.88);
  padding: 28px 0 40px;
}
.footer-inner { display: flex; justify-content: space-between; gap: 20px; align-items: center; }
@media (max-width: 980px) {
  .hero-content, .section-grid, .poster-layout, .support-layout, .date-grid, .placeholder-grid, .committee-grid, .gallery-grid, .feature-list, .cfp-grid {
    grid-template-columns: 1fr;
  }
  .logo-row, .logo-cluster {
    flex-direction: column;
  }
  .menu {
    position: absolute; left: 16px; right: 16px; top: 82px; display: none;
    padding: 18px; border-radius: 18px; background: rgba(8,20,42,0.97); box-shadow: var(--shadow);
    flex-direction: column; align-items: flex-start;
  }
  .menu.is-open { display: flex; }
  .nav-toggle {
    display: inline-flex; border: 1px solid rgba(255,255,255,0.28); background: transparent; color: #fff; border-radius: 999px; padding: 10px 14px; font-weight: 700;
  }
}
@media (max-width: 640px) {
  .section { padding: 40px 0; }
  .brand img { width: 56px; }
  .container { width: min(100% - 20px, 1180px); }
  .gallery-grid img { height: 200px; }
}