:root{
  --bg: #faf8f6;
  --card: #ffffff;
  --text: #111111;
  --muted: #5a5a5a;
  --border: rgba(17,17,17,.10);
  --shadow: 0 10px 25px rgba(0,0,0,.06);
  --accent: #e53935; /* IMC red-leaning accent */
  --radius: 18px;
  --max: 1080px;
}

*{ box-sizing: border-box; }
html{ scroll-behavior: smooth; }
body{
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a{ color: inherit; }
.link{
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid rgba(17,17,17,.25);
}
.link:hover{ border-bottom-color: var(--accent); }
.link:focus-visible{ outline: 3px solid rgba(229,57,53,.35); outline-offset: 3px; border-bottom-color: transparent; }

.skip-link{
  position:absolute;
  left:-9999px;
  top: 12px;
  background: var(--card);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  box-shadow: var(--shadow);
  z-index: 9999;
}
.skip-link:focus{ left: 12px; }

.container{
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.site-header{
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(250,248,246,.78);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 14px 0;
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.brand-logo{
  height: 72px;
  width: auto;
  display: block;
}

.nav{
  display:flex;
  align-items:center;
  gap: 12px;
}

.nav-menu{
  display:flex;
  gap: 18px;
  align-items:center;
}

.nav-link{
  text-decoration: none;
  font-size: 14px;
  color: var(--muted);
  padding: 8px 10px;
  border-radius: 999px;
}
.nav-link:hover{ color: var(--text); background: rgba(17,17,17,.04); }
.nav-link:focus-visible{ outline: 3px solid rgba(229,57,53,.35); outline-offset: 2px; }

.nav-toggle{
  display:none;
  align-items:center;
  gap: 10px;
  background: transparent;
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 999px;
  cursor: pointer;
}
.nav-toggle:focus-visible{ outline: 3px solid rgba(229,57,53,.35); outline-offset: 2px; }
.nav-toggle-lines{
  width: 18px;
  height: 12px;
  position: relative;
  display:block;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after,
.nav-toggle-lines{
  background: transparent;
}
.nav-toggle-lines::before,
.nav-toggle-lines::after{
  content:"";
  position:absolute;
  left:0;
  width:100%;
  height:2px;
  background: var(--text);
  border-radius: 2px;
}
.nav-toggle-lines::before{ top:0; }
.nav-toggle-lines::after{ bottom:0; }
.nav-toggle-label{ font-size: 14px; color: var(--text); }

.hero{
  padding: 54px 0 20px;
}
.hero-inner{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 28px;
}
.eyebrow{
  margin: 0 0 10px;
  font-size: 13px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--muted);
}
.hero-title{
  margin: 0 0 12px;
  font-size: clamp(34px, 5vw, 56px);
  font-weight: 500;
  letter-spacing: -0.02em;
}
.hero-meta{
  margin: 0 0 20px;
  color: var(--muted);
  font-size: 16px;
}
.dot{ padding: 0 10px; }

.hero-ctas{ display:flex; gap: 12px; flex-wrap: wrap; }

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: 500;
  font-size: 14px;
  border: 1px solid var(--border);
}
.btn-primary{
  background: var(--text);
  color: #fff;
  border-color: transparent;
}
.btn-primary:hover{ opacity: .92; }
.btn-secondary{
  background: transparent;
  color: var(--text);
}
.btn-secondary:hover{ background: rgba(17,17,17,.04); }

.section{
  padding: 36px 0;
  scroll-margin-top: 100px;
}
.section-title{
  margin: 0 0 12px;
  font-size: 22px;
  font-weight: 600;
}
.section-lede{
  margin: 0;
  color: var(--muted);
  font-size: 16px;
}
.section-head{
  display:flex;
  align-items:flex-end;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 18px;
}
.section-subtitle{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}

.grid{
  display:grid;
  grid-template-columns: repeat(2, minmax(0,1fr));
  gap: 16px;
}

.card{
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 18px 16px;
  box-shadow: var(--shadow);
}
.card-title{
  margin: 0 0 10px;
  font-size: 14px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--muted);
  font-weight: 600;
}
.card-body{ margin: 0; font-size: 15px; }
.card-actions{ margin: 12px 0 0; }

.agenda-root{
  display:flex;
  flex-direction: column;
  gap: 26px;
}

.day-block{
  padding-top: 6px;
  scroll-margin-top: 100px;
}
.day-title{
  margin: 0 0 14px;
  font-size: 18px;
  font-weight: 600;
}
.timeline{
  position: relative;
  display:flex;
  flex-direction: column;
  gap: 12px;
}
.timeline::before{
  content:"";
  position:absolute;
  left: 112px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--border);
}

.session{
  display:grid;
  grid-template-columns: 92px 1fr;
  gap: 20px;
  align-items: start;
}
.session-time{
  font-variant-numeric: tabular-nums;
  color: var(--muted);
  font-size: 14px;
  padding-top: 22px;
  text-align: right;
  white-space: nowrap;
}
.session-card{
  position: relative;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 16px 14px;
  box-shadow: var(--shadow);
}
.session-card::before{
  content:"";
  position:absolute;
  left: -12px;
  top: 22px;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--accent);
  box-shadow: 0 0 0 6px rgba(229,57,53,.14);
}
.session-title{
  margin: 0 0 10px;
  font-size: 16px;
  font-weight: 600;
  letter-spacing: -0.01em;
}
.session-summary{
  margin: 10px 0 0;
  color: var(--muted);
  font-size: 14px;
}

.session-presenters{
  display:flex;
  flex-direction: column;
  gap: 10px;
}

.presenter{
  padding-top: 2px;
}
.presenter-name-wrap{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-wrap: wrap;
}
.presenter-name{
  font-weight: 600;
  font-size: 14px;
}
.presenter-badge{
  font-size: 12px;
  color: var(--accent);
  border: 1px solid rgba(229,57,53,.35);
  padding: 2px 8px;
  border-radius: 999px;
}
.presenter-meta{
  color: var(--muted);
  font-size: 13px;
  margin-top: 6px;
}
.presenter-link{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  width: 28px;
  height: 28px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: rgba(17,17,17,.02);
  flex-shrink: 0;
}
.presenter-link:hover{ background: rgba(17,17,17,.05); }
.presenter-link:focus-visible{ outline: 3px solid rgba(229,57,53,.35); outline-offset: 2px; }

.li-icon{
  width: 18px;
  height: 18px;
  fill: var(--text);
  opacity: .85;
}

.muted{ color: var(--muted); }

.footer{
  border-top: 1px solid var(--border);
  padding: 24px 0 34px;
}
.footer-inner{
  display:flex;
  align-items:flex-start;
  justify-content: space-between;
  gap: 18px;
}
.footer-logo{
  height: 72px;
  width: auto;
  display:block;
  margin-bottom: 8px;
}
.footer-text{
  margin: 0;
  color: var(--muted);
  font-size: 14px;
}
.footer-meta{
  margin: 8px 0 0;
  color: var(--muted);
  font-size: 12px;
}

@media (max-width: 860px){
  .grid{ grid-template-columns: 1fr; }
  .timeline::before{ left: 16px; }
  .session{ grid-template-columns: 1fr; }
  .session-time{ text-align: left; padding-top: 0; }
  .session-card::before{ left: -6px; top: 18px; }
}

@media (max-width: 720px){
  .nav-toggle{ display:inline-flex; }
  .nav-menu{
    position: absolute;
    right: 20px;
    top: 62px;
    width: min(340px, calc(100vw - 40px));
    display:none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 10px;
    box-shadow: var(--shadow);
  }
  .nav-menu.open{ display:flex; }
  .nav-link{ padding: 12px 12px; }
}