:root{
  --blue:#299cd1;
  --blue-deep:#1374ae;
  --blue-light:#40a2c9;
  --navy:#092e51;
  --red:#ca0a16;
  --gray:#f2f2f2;
  --card:#ffffff;
  --text:#1d2a35;
  --muted:#66737e;
  --line:#dce5ec;
  --shadow:0 12px 30px rgba(16,47,87,.10);
  --shadow-soft:0 4px 14px rgba(16,47,87,.08);
  --radius:12px;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:"Open Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color:var(--text);
  background:var(--gray);
  font-size:18px;
  line-height:1.6;
  text-rendering:optimizeLegibility;
  -webkit-font-smoothing:antialiased;
}

a{color:inherit}
a:focus-visible, summary:focus-visible, button:focus-visible{
  outline:3px solid rgba(210,43,43,.75);
  outline-offset:3px;
}

.skip-link{
  position:absolute;
  left:-999px;
  top:10px;
  background:#fff;
  color:var(--navy);
  padding:10px 14px;
  z-index:20;
  border-radius:8px;
}
.skip-link:focus{left:10px}

.site-hero{
  position:relative;
  background:var(--blue);
  overflow:hidden;
  min-height:315px;
  display:flex;
  align-items:center;
  justify-content:center;
  isolation:isolate;
}
.site-hero:before,.site-hero:after{
  content:"";
  position:absolute;
  top:0;
  bottom:0;
  width:50%;
  background-size:cover;
  background-position:center;
  z-index:-2;
}
.site-hero:before{left:0;background-image:url('images/lvd_left.jpg')}
.site-hero:after{right:0;background-image:url('images/lvd_right.jpg')}
.site-hero::after{
  box-shadow:inset 0 -30px 40px rgba(16,47,87,.08);
}
.hero-logo{
  position:relative;
  z-index:1;
  width:min(670px,78vw);
  height:auto;
  filter:drop-shadow(0 6px 10px rgba(0,0,0,.18));
}

.intro{
  background:var(--navy);
  color:#fff;
  text-align:center;
  padding:31px 18px;
}
.intro p{
  max-width:920px;
  margin:0 auto;
  font-size:20px;
}

.nav-strip{
  background:#fff;
  text-align:center;
  padding:24px 14px;
  box-shadow:0 1px 0 rgba(16,47,87,.06);
  position:sticky;
  top:0;
  z-index:5;
}
.button{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  background:#fff;
  color:var(--navy);
  border:3px solid var(--navy);
  border-radius:999px;
  padding:11px 24px;
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:2px;
  text-decoration:none;
  line-height:1.15;
  box-shadow:none;
  transition:transform .18s ease, background .18s ease, color .18s ease, box-shadow .18s ease;
}
.button:hover,.button:focus{
  background:#fff;
  color:var(--navy);
  transform:translateY(-1px);
  box-shadow:0 8px 18px rgba(16,47,87,.17);
}
.button:active{transform:translateY(1px);box-shadow:none}
.button i.fa-caret-right{color:var(--red);font-size:1.2rem;padding-left:4px}

.page{padding:22px 0 0}
.container{width:min(980px,92vw);margin:0 auto}
.hint{text-align:center;color:var(--muted);font-size:16px;margin:8px 0 20px}
.day{padding:36px 0 20px}
.day + .day{border-top:1px solid rgba(16,47,87,.08)}
.day-title{
  font-family:"Encode Sans Condensed", "Arial Narrow", Impact, system-ui, sans-serif;
  text-transform:uppercase;
  display:flex;
  align-items:baseline;
  justify-content:center;
  gap:14px;
  margin:0 0 24px;
  line-height:1;
  letter-spacing:.025em;
}
.day-title .name{font-size:54px;color:var(--navy);font-weight:900}
.day-title .divider{font-size:50px;color:var(--red);font-weight:900}
.day-title .date{font-size:46px;color:#707070;font-weight:500}

.accordion{display:grid;gap:16px}
.event{
  background:var(--card);
  border-radius:8px;
  box-shadow:0 0 0 transparent;
  overflow:hidden;
  border:1px solid rgba(16,47,87,.07);
  transition:box-shadow .2s ease, transform .2s ease;
}
.event:hover{box-shadow:var(--shadow-soft);transform:translateY(-1px)}
.event[open]{box-shadow:var(--shadow)}
.event summary{
  list-style:none;
  cursor:pointer;
  display:grid;
  grid-template-columns:62px 1fr 30px;
  align-items:center;
  gap:15px;
  min-height:78px;
  background:var(--blue);
  padding:13px 18px;
  color:#fff;
  user-select:none;
}
.event summary::-webkit-details-marker{display:none}
.icon{
  flex:none;
  width:50px;
  height:50px;
  border-radius:50%;
  background:rgba(255,255,255,.45);
  display:flex;
  align-items:center;
  justify-content:center;
  font-size:24px;
  color:var(--navy);
  box-shadow:inset 0 0 0 2px rgba(255,255,255,.32);
}
.event-name{
  display:block;
  font-family:"Encode Sans Condensed", "Arial Narrow", Impact, system-ui, sans-serif;
  font-size:31px;
  font-weight:600;
  line-height:1.05;
  letter-spacing:.01em;
}
.event-time{
  display:block;
  color:var(--navy);
  font-family:"Encode Sans Condensed", "Arial Narrow", Impact, system-ui, sans-serif;
  font-size:24px;
  font-weight:600;
  margin-top:4px;
  letter-spacing:.01em;
}
.chevron{
  font-size:30px;
  font-weight:900;
  line-height:1;
  transition:transform .22s ease;
}
.event[open] .chevron{transform:rotate(180deg)}
.event-body{
  padding:2rem 5% 1.5rem;
  background:#fff;
  overflow:hidden;
}
.event-body p{margin:0 0 14px;font-size:1.12rem;color:#333;line-height:1.8}
.event-body ul{margin-top:0;padding-left:22px}
.event-body .button{margin-top:8px;margin-right:8px}
.contact{
  margin-top:20px;
  padding-top:15px;
  border-top:1px solid var(--line);
  font-family:"Encode Sans Condensed", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size:1.35rem;
  letter-spacing:1px;
  font-weight:600;
  color:#a1a1a1;
  text-align:right;
}
.small-img{
  max-width:380px;
  width:100%;
  display:block;
  margin:20px auto;
  border-radius:8px;
  box-shadow:0 8px 18px rgba(16,47,87,.13);
}
.sponsors{background:#fff;padding:38px 15px;text-align:center;margin-top:18px}
.sponsors img{max-width:900px;width:100%;height:auto;border-radius:8px}
.footer{background:var(--navy);color:#fff;text-align:center;padding:24px 15px;font-size:16px}
.footer p{margin:0}
.note{background:#fff7d6;border-left:6px solid #e4b028;padding:14px 16px;margin:12px 0;border-radius:8px}

.to-top{
  position:fixed;
  right:18px;
  bottom:18px;
  width:44px;
  height:44px;
  border-radius:50%;
  border:0;
  background:var(--navy);
  color:#fff;
  font-size:22px;
  cursor:pointer;
  box-shadow:var(--shadow);
  opacity:0;
  pointer-events:none;
  transform:translateY(8px);
  transition:.18s ease;
}
.to-top.show{opacity:1;pointer-events:auto;transform:translateY(0)}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto!important;transition:none!important;animation:none!important}
}
@media(max-width:650px){
  body{font-size:16px;line-height:1.55}
  .site-hero{min-height:175px}
  .site-hero:before,.site-hero:after{display:none}
  .hero-logo{width:90vw}
  .intro{padding:24px 16px}
  .intro p{font-size:17px}
  .nav-strip{padding:17px 12px;position:static}
  .page{padding-top:16px}
  .day{padding:26px 0 13px}
  .day-title{gap:8px;flex-wrap:wrap;margin-bottom:17px}
  .day-title .name{font-size:36px}
  .day-title .divider{font-size:34px}
  .day-title .date{font-size:32px}
  .accordion{gap:12px}
  .event{border-radius:10px}
  .event summary{grid-template-columns:48px 1fr 22px;gap:10px;padding:11px 12px;min-height:70px}
  .icon{width:40px;height:40px;font-size:22px}
  .event-name{font-size:25px}
  .event-time{font-size:18px}
  .event-body{padding:20px 18px 22px}
  .button{padding:10px 18px;font-size:14px}
  .sponsors{padding:24px 10px}
  .to-top{width:40px;height:40px;right:12px;bottom:12px}
}