:root{
  --navy:#14306B;
  --ink:#0B1B3F;
  --accent:#E8347D;
  --accent-glow:#FF5BA6;
  --bg-light:#F7F8FA;
  --white:#FFFFFF;
  --text-light:#14213A;
  --muted:#5A6478;
  --text-dark:#EAF0FF;
  --hairline:#E2E6EE;
  --maxw:1200px;
  --radius:16px;
}

/* Keyframe animations */
@keyframes plasma-pulse{
  0%,100%{opacity:.26;transform:scale(1)}
  50%{opacity:.52;transform:scale(1.12)}
}
@keyframes plasma-drift{
  0%{transform:translate(0,0) scale(1)}
  33%{transform:translate(28px,-20px) scale(1.06)}
  66%{transform:translate(-20px,16px) scale(.94)}
  100%{transform:translate(0,0) scale(1)}
}
@keyframes plasma-pulse-r{
  0%,100%{opacity:.18;transform:scale(1)}
  50%{opacity:.34;transform:scale(1.08)}
}

*,*::before,*::after{box-sizing:border-box}
html,body{max-width:100%;overflow-x:hidden}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,sans-serif;
  color:var(--text-light);
  background:var(--white);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
img,svg,video,iframe{max-width:100%;height:auto;display:block}
a{color:inherit;text-decoration:none}
h1,h2,h3{font-family:'Space Grotesk',sans-serif;margin:0;line-height:1.05;letter-spacing:-.02em}
p{margin:0 0 1rem}
::selection{background:var(--accent);color:#fff}

.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 24px}

.skip-link{position:absolute;left:-999px;top:0;background:var(--accent);color:#fff;padding:10px 16px;z-index:1000}
.skip-link:focus{left:0}

:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}

/* Buttons */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.4em;
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  border-radius:999px;padding:.7em 1.4em;font-size:.95rem;
  cursor:pointer;border:1.5px solid transparent;
  transition:transform .18s ease,box-shadow .18s ease,background .18s ease;
  white-space:nowrap;
}
.btn-lg{padding:.95em 1.8em;font-size:1.05rem}
.btn-accent{background:var(--accent);color:#fff;box-shadow:0 6px 20px rgba(232,52,125,.32)}
.btn-accent:hover{transform:translateY(-2px);box-shadow:0 10px 28px rgba(232,52,125,.45);background:#f23d87}
.btn-ghost{background:rgba(255,255,255,.06);color:#fff;border-color:rgba(255,255,255,.4)}
.btn-ghost:hover{background:rgba(255,255,255,.15);transform:translateY(-2px)}

/* Promo bar */
.promo-bar{
  background:var(--ink);color:var(--text-dark);
  display:flex;justify-content:center;align-items:center;gap:12px;flex-wrap:wrap;
  padding:8px 16px;font-size:.85rem;text-align:center;
}
.promo-bar span{opacity:.85}
.promo-link{color:var(--accent-glow);font-weight:600}
.promo-link:hover{color:#fff}

/* Header */
.site-header{
  position:sticky;top:0;z-index:100;
  background:transparent;
  transition:background .3s ease,box-shadow .3s ease,backdrop-filter .3s ease;
}
.site-header.scrolled{
  background:rgba(11,27,63,.92);
  backdrop-filter:blur(10px);
  box-shadow:0 2px 20px rgba(0,0,0,.3);
}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;min-height:70px}
.brand{display:flex;align-items:center;gap:12px;min-width:0}
.brand-mark{
  width:34px;height:34px;border-radius:50%;flex:none;
  background:radial-gradient(circle at 50% 50%,var(--accent-glow),var(--accent) 55%,var(--ink) 100%);
  display:grid;place-items:center;
  box-shadow:0 0 14px rgba(232,52,125,.6);
}
.brand-core{width:11px;height:11px;border-radius:50%;background:#fff;box-shadow:0 0 8px #fff}
.brand-text{display:flex;flex-direction:column;line-height:1.05;min-width:0}
.brand-line1{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:.95rem;color:#fff;letter-spacing:-.01em}
.brand-line2{font-family:'Space Grotesk',sans-serif;font-weight:500;font-size:.78rem;color:var(--accent-glow);letter-spacing:.02em}

.main-nav{display:flex;align-items:center;gap:28px}
.nav-link{color:#fff;font-weight:500;font-size:.95rem;position:relative;padding:4px 0}
.nav-link::after{
  content:"";position:absolute;left:0;bottom:-2px;
  width:0;height:2px;background:var(--accent);
  transition:width .25s ease;
}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.nav-cta{margin-left:6px}

.hamburger{
  display:none;flex-direction:column;gap:5px;
  background:none;border:0;cursor:pointer;padding:8px;
}
.hamburger span{width:26px;height:2px;background:#fff;border-radius:2px;transition:.3s}

/* Mobile drawer */
.drawer-overlay{
  position:fixed;inset:0;background:rgba(0,0,0,.5);
  opacity:0;visibility:hidden;transition:.3s;z-index:200;
}
.drawer-overlay.open{opacity:1;visibility:visible}
.mobile-drawer{
  position:fixed;top:0;right:0;height:100%;width:80%;max-width:320px;
  background:var(--ink);z-index:300;padding:80px 28px 28px;
  transform:translateX(100%);transition:transform .3s ease;
}
.mobile-drawer.open{transform:translateX(0)}
.drawer-close{
  position:absolute;top:18px;right:22px;
  background:none;border:0;color:#fff;font-size:2rem;line-height:1;cursor:pointer;
}
.drawer-nav{display:flex;flex-direction:column;gap:8px}
.drawer-link{
  color:var(--text-dark);font-family:'Space Grotesk',sans-serif;
  font-size:1.3rem;font-weight:600;padding:12px 0;
  border-bottom:1px solid rgba(255,255,255,.1);
}
.drawer-link:hover{color:var(--accent-glow)}
.drawer-cta{margin-top:18px}

/* HERO */
.hero{
  position:relative;color:#fff;overflow:hidden;
  min-height:86vh;display:flex;align-items:flex-end;
}
.hero-media{position:absolute;inset:0;z-index:0}
.hero-media img{width:100%;height:100%;object-fit:cover;object-position:50% 40%}
/* Scrim: lighter in top/center so plasma colors bleed through; heavier at bottom for text */
.hero-scrim{
  position:absolute;inset:0;
  background:
    linear-gradient(180deg,rgba(11,27,63,.38) 0%,rgba(11,27,63,.18) 30%,rgba(11,27,63,.94) 100%),
    linear-gradient(90deg,rgba(11,27,63,.62) 0%,rgba(11,27,63,.06) 60%);
}
/* Left/bottom plasma glow — animated */
.hero-glow{
  position:absolute;bottom:-30%;left:-10%;width:60%;height:80%;
  background:radial-gradient(circle,rgba(255,91,166,.38),transparent 65%);
  filter:blur(44px);
  animation:plasma-pulse 5s ease-in-out infinite,plasma-drift 14s ease-in-out infinite;
  will-change:opacity,transform;
}
/* Right/top accent glow — mirrors the actual plasma in the tokamak image */
.hero-glow-right{
  position:absolute;top:0;right:-5%;width:46%;height:66%;
  background:radial-gradient(circle,rgba(232,52,125,.22),transparent 65%);
  filter:blur(56px);
  animation:plasma-pulse-r 7s ease-in-out 1.8s infinite;
  will-change:opacity;
}
.hero-inner{
  position:relative;z-index:2;
  padding-top:90px;padding-bottom:64px;
  max-width:860px;
}
.hero-eyebrow{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  font-size:.8rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent-glow);margin-bottom:18px;
}
.hero-title{
  font-size:clamp(2.4rem,6.5vw,4.6rem);font-weight:700;
  margin-bottom:18px;text-shadow:0 4px 30px rgba(0,0,0,.4);
}
.hero-sub{
  font-size:clamp(1.1rem,2.4vw,1.5rem);font-weight:500;
  color:#fff;margin-bottom:14px;font-family:'Space Grotesk',sans-serif;
}
.hero-date{
  display:flex;align-items:center;gap:10px;
  font-size:1rem;color:var(--text-dark);margin-bottom:28px;flex-wrap:wrap;
}
.date-dot{
  width:9px;height:9px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 10px var(--accent);flex:none;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-bottom:34px}
.hero-hosted{
  display:flex;flex-wrap:wrap;align-items:center;gap:10px;
  padding-top:22px;border-top:1px solid rgba(255,255,255,.18);
}
.hosted-label{
  font-family:'Space Grotesk',sans-serif;font-size:.75rem;
  letter-spacing:.16em;text-transform:uppercase;color:var(--accent-glow);
}
.hosted-names{font-size:.9rem;color:var(--text-dark)}

/* STAT STRIP */
.stat-strip{background:var(--navy);color:#fff}
.stat-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:1px;padding:0}
.stat{padding:34px 24px;border-left:1px solid rgba(255,255,255,.12)}
.stat:first-child{border-left:0}
.stat-num{
  display:block;font-family:'Space Grotesk',sans-serif;font-weight:700;
  font-size:1.9rem;color:var(--accent-glow);letter-spacing:-.02em;
}
.stat-label{font-size:.85rem;color:var(--text-dark);opacity:.85}

/* Section eyebrow — flex row with accent rule */
.section-eyebrow{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;
  color:var(--accent);margin-bottom:10px;
  display:flex;align-items:center;gap:10px;
}
.section-eyebrow::before{
  content:'';display:inline-block;
  width:22px;height:2px;
  background:currentColor;flex:none;border-radius:1px;
}
.section-eyebrow.light{color:var(--accent-glow)}
.section-title{
  font-size:clamp(1.8rem,4vw,2.8rem);font-weight:700;
  color:var(--navy);margin-bottom:18px;
}
.section-title.light{color:#fff}

/* ABOUT */
.about{padding:90px 0;background:var(--bg-light);position:relative}
/* Thin plasma-gradient top accent stripe — bridges the navy stat strip above */
.about::before{
  content:'';position:absolute;top:0;left:0;right:0;height:3px;
  background:linear-gradient(90deg,
    transparent 0%,
    var(--accent) 20%,
    var(--accent-glow) 50%,
    var(--accent) 80%,
    transparent 100%
  );
}
.split{
  display:grid;grid-template-columns:1fr 1fr;
  gap:56px;align-items:center;margin-bottom:80px;
}
.split:last-child{margin-bottom:0}
/* Hairline divider between about blocks */
.split:not(:last-child){
  padding-bottom:80px;
  border-bottom:1px solid var(--hairline);
  margin-bottom:0;
}
.split + .split{padding-top:0}
.split-body p{color:var(--muted);font-size:1.02rem}
.split-media{position:relative;min-width:0}
.split-media img{
  width:100%;border-radius:var(--radius);
  box-shadow:0 24px 60px rgba(20,48,107,.22);
  transition:transform .4s ease,box-shadow .4s ease;
}
.split-media img:hover{
  transform:translateY(-4px);
  box-shadow:0 32px 72px rgba(20,48,107,.28);
}
.media-tag{
  position:absolute;left:16px;bottom:16px;
  background:rgba(11,27,63,.78);color:#fff;
  font-family:'Space Grotesk',sans-serif;font-size:.72rem;
  letter-spacing:.1em;text-transform:uppercase;
  padding:6px 14px;border-radius:999px;backdrop-filter:blur(4px);
}

/* LOCATION */
.location{
  padding:90px 0;background:var(--ink);
  color:var(--text-dark);position:relative;overflow:hidden;
}
/* Plasma glow — top right */
.location::before{
  content:"";position:absolute;top:-20%;right:-10%;width:50%;height:70%;
  background:radial-gradient(circle,rgba(232,52,125,.2),transparent 65%);
  filter:blur(50px);z-index:0;
}
/* "NOV 13" watermark — nearly invisible texture */
.location::after{
  content:'NOV 13';
  position:absolute;right:3%;top:50%;transform:translateY(-50%);
  font-family:'Space Grotesk',sans-serif;
  font-size:clamp(56px,9vw,120px);font-weight:800;
  color:rgba(255,255,255,.04);letter-spacing:.12em;
  pointer-events:none;user-select:none;
  white-space:nowrap;line-height:1;z-index:0;
}
.loc-head{position:relative;z-index:1;margin-bottom:34px}
.loc-grid{
  position:relative;z-index:1;
  display:grid;grid-template-columns:1.2fr .9fr;gap:32px;align-items:stretch;
}
.loc-photo{min-width:0}
.loc-photo img{
  width:100%;height:100%;
  object-fit:cover;object-position:50% 45%;
  border-radius:var(--radius);min-height:280px;
}
.loc-card{
  background:rgba(255,255,255,.05);
  border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);padding:30px;
}
.loc-card h3{font-size:1.5rem;color:#fff;margin-bottom:12px}
.loc-addr{color:var(--text-dark);font-size:1.05rem}
.loc-date{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  color:var(--accent-glow);margin-bottom:4px;
}
.loc-note{font-size:.85rem;opacity:.7}
.loc-dir{margin:10px 0 22px}
.map-wrap{
  position:relative;border-radius:12px;overflow:hidden;
  border:1px solid rgba(255,255,255,.12);
  background:rgba(255,255,255,.04);
  min-height:240px;
}
.map-wrap iframe{width:100%;height:240px;border:0;display:block;filter:grayscale(.2)}

/* SPEAKERS */
.speakers{padding:90px 0;background:var(--white)}
.sp-head{margin-bottom:36px}
.sp-search-wrap{margin-top:18px;max-width:420px}
.sp-search{
  width:100%;padding:13px 18px;
  border:1.5px solid var(--hairline);border-radius:999px;
  font-family:inherit;font-size:.95rem;background:var(--bg-light);
}
.sp-search:focus{border-color:var(--accent);outline:none;background:#fff}
.sp-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:24px}
.sp-card{
  background:var(--white);border:1px solid var(--hairline);
  border-radius:var(--radius);padding:24px 18px;text-align:center;
  transition:transform .25s ease,box-shadow .25s ease,border-color .25s ease;
  min-width:0;
}
.sp-card:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 40px rgba(20,48,107,.16);
  border-color:transparent;
}
.sp-portrait{
  width:120px;height:120px;margin:0 auto 16px;
  border-radius:50%;padding:4px;background:var(--bg-light);
  transition:background .25s ease,box-shadow .25s ease;
}
.sp-card:hover .sp-portrait{
  background:linear-gradient(135deg,var(--accent),var(--accent-glow));
  box-shadow:0 0 0 4px rgba(232,52,125,.15);
}
.sp-portrait img{width:100%;height:100%;border-radius:50%;object-fit:cover}
.sp-name{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  font-size:1.02rem;color:var(--navy);margin-bottom:6px;overflow-wrap:break-word;
}
.sp-role{font-size:.82rem;color:var(--muted);line-height:1.45;overflow-wrap:break-word}
.sp-empty{text-align:center;color:var(--muted);padding:40px 0}

/* AGENDA */
.agenda{padding:90px 0;background:var(--navy);color:var(--text-dark)}
.ag-head{margin-bottom:30px}
.day-toggle{
  display:inline-flex;
  background:rgba(255,255,255,.07);border:1px solid rgba(255,255,255,.14);
  border-radius:999px;padding:5px;margin-top:8px;flex-wrap:wrap;gap:4px;
}
.day-btn{
  background:none;border:0;cursor:pointer;color:var(--text-dark);
  font-family:'Space Grotesk',sans-serif;font-weight:600;font-size:.95rem;
  padding:10px 22px;border-radius:999px;
  display:flex;flex-direction:column;line-height:1.1;transition:.2s;
}
.day-btn span{font-size:.68rem;font-weight:400;opacity:.7;letter-spacing:.03em}
.day-btn.active{background:var(--accent);color:#fff}
.day-btn.active span{opacity:.85}

.timeline{position:relative;padding-left:34px;margin-top:20px}
.timeline::before{
  content:"";position:absolute;left:8px;top:6px;bottom:6px;width:2px;
  background:linear-gradient(180deg,var(--accent),rgba(232,52,125,.2));
}
.tl-item{position:relative;margin-bottom:18px}
.tl-item::before{
  content:"";position:absolute;left:-34px;top:22px;
  width:14px;height:14px;border-radius:50%;
  background:var(--accent);box-shadow:0 0 0 4px rgba(232,52,125,.18);
  transform:translateX(1px);
}
.tl-card{
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.1);
  border-radius:14px;padding:18px 22px;
  transition:border-color .2s ease,background .2s ease;
}
.tl-card:hover{border-color:rgba(232,52,125,.5);background:rgba(255,255,255,.08)}
.tl-time{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  font-size:.82rem;color:var(--accent-glow);letter-spacing:.04em;margin-bottom:6px;
}
.tl-title{
  font-family:'Space Grotesk',sans-serif;font-weight:600;
  font-size:1.08rem;color:#fff;margin-bottom:8px;
  line-height:1.25;overflow-wrap:break-word;
}
.tl-mod{font-size:.85rem;color:var(--text-dark);margin-bottom:8px}
.tl-mod b{color:#fff;font-weight:600}
.tl-chips{display:flex;flex-wrap:wrap;gap:7px}
.chip{
  background:rgba(255,255,255,.08);border:1px solid rgba(255,255,255,.12);
  border-radius:999px;padding:4px 11px;
  font-size:.74rem;color:var(--text-dark);overflow-wrap:break-word;
}
.tl-break .tl-card{background:rgba(232,52,125,.08);border-color:rgba(232,52,125,.25)}
.tl-break .tl-title{font-size:.98rem;color:var(--accent-glow)}

.ag-cta{
  margin-top:46px;text-align:center;
  padding:34px;
  background:rgba(255,255,255,.05);border:1px solid rgba(255,255,255,.12);
  border-radius:var(--radius);
}
.ag-cta p{font-family:'Space Grotesk',sans-serif;font-size:1.15rem;color:#fff;margin-bottom:18px}

/* HOSTS */
.hosts{padding:80px 0;background:var(--bg-light)}
.hosts-block{margin-bottom:46px;text-align:center}
.hosts-block:last-child{margin-bottom:0}
.hosts-heading{font-size:1.4rem;color:var(--navy);margin-bottom:24px}
.logo-row{display:flex;flex-wrap:wrap;justify-content:center;align-items:center;gap:22px}
.logo-card{
  background:#fff;border:1px solid var(--hairline);border-radius:14px;
  padding:22px 30px;display:flex;align-items:center;justify-content:center;
  min-height:96px;min-width:200px;flex:0 1 240px;
  transition:transform .22s ease,box-shadow .22s ease,border-color .22s ease;
}
.logo-card:hover{
  transform:translateY(-4px);
  box-shadow:0 12px 32px rgba(20,48,107,.12);
  border-color:rgba(20,48,107,.2);
}
.logo-card img{max-height:60px;width:auto;object-fit:contain}

/* FOOTER */
.site-footer{background:var(--ink);color:var(--text-dark);padding:50px 0 30px}
.footer-inner{
  display:flex;align-items:center;justify-content:space-between;
  gap:28px;flex-wrap:wrap;
  padding-bottom:28px;border-bottom:1px solid rgba(255,255,255,.12);
}
.footer-event{font-family:'Space Grotesk',sans-serif;font-weight:700;font-size:1.4rem;color:#fff;margin-bottom:6px}
.footer-meta{font-size:.9rem;opacity:.8;margin:0}
.footer-nav{display:flex;flex-wrap:wrap;gap:24px;padding-top:24px;font-size:.9rem}
.footer-nav a{color:var(--text-dark);opacity:.8}
.footer-nav a:hover{opacity:1;color:var(--accent-glow)}

/* Reveal animation */
.reveal{opacity:0;transform:translateY(28px);transition:opacity .7s ease,transform .7s ease}
.reveal.in{opacity:1;transform:none}

/* ---- Responsive breakpoints ---- */
@media(max-width:960px){
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat:nth-child(3){border-left:0}
  .sp-grid{grid-template-columns:repeat(3,1fr)}
}

@media(max-width:860px){
  .main-nav{display:none}
  .hamburger{display:flex}
  .split,.split-rev{grid-template-columns:1fr;gap:30px}
  /* Reset the split divider to use margin on mobile */
  .split:not(:last-child){
    padding-bottom:48px;
    margin-bottom:0;
    border-bottom:1px solid var(--hairline);
  }
  .split-rev .split-media{order:-1}
  .loc-grid{grid-template-columns:1fr}
}

@media(max-width:680px){
  .sp-grid{grid-template-columns:repeat(2,1fr)}
  .hero{min-height:auto;padding-top:40px}
  .hero-inner{padding-top:50px;padding-bottom:48px}
  .about,.location,.speakers,.agenda,.hosts{padding:64px 0}
  .footer-inner{flex-direction:column;align-items:flex-start}
  /* Hide location watermark at small sizes — would be too large */
  .location::after{display:none}
}

@media(max-width:430px){
  /* Speaker grid: 2 columns — critical mobile fix */
  .sp-grid{grid-template-columns:repeat(2,1fr);gap:12px}
  .sp-card{padding:14px 10px}
  .sp-portrait{width:84px;height:84px}
  .sp-name{font-size:.85rem}
  .sp-role{font-size:.72rem}

  /* Stat strip: keep 2 columns, tighten padding */
  .stat-grid{grid-template-columns:repeat(2,1fr)}
  .stat{padding:20px 14px}
  .stat-num{font-size:1.55rem}
  /* Row separator for the second row of stats */
  .stat:nth-child(3),.stat:nth-child(4){
    border-top:1px solid rgba(255,255,255,.12);
  }

  /* Hero eyebrow: reduce letter-spacing to prevent 3-line wrap */
  .hero-eyebrow{letter-spacing:.08em;font-size:.72rem}

  /* Stretch CTAs on very small screens */
  .hero-actions .btn{flex:1 1 auto}

  .container{padding:0 18px}
  .brand-line2{display:none}
}

@media(prefers-reduced-motion:reduce){
  *{animation:none!important;transition:none!important}
  html{scroll-behavior:auto}
  .reveal{opacity:1;transform:none}
}