:root{
  --bg:#0b0f16; --bg2:#131927; --surface:#121824;
  --muted:#a3adc2; --text:#e9eef6;
  --brand:#79d6ff; --brand-2:#b79bff; --accent:#7dffd6;
  --ring: 0 0 0 8px rgb(121 214 255 / 14%);
  --space-sm:10px; --space-md:16px; --space-lg:28px; --radius:20px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; font-family:Inter,system-ui,-apple-system,Segoe UI,Roboto,Ubuntu,'Helvetica Neue',Arial,'Noto Sans',sans-serif;
  color:var(--text);
  background:  #090e1a;
  line-height:1.6; -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
}
a{color:inherit}
#progress{position:fixed;left:0;top:0;height:3px;background:linear-gradient(90deg,var(--brand),var(--brand-2));width:0;z-index:100}
.container{width:min(1100px,92vw);margin-inline:auto}
.site-header{position:relative;z-index:5}

/* nav */
.nav{display:flex;align-items:center;gap:10px;justify-content:space-between;padding:var(--space-md) 0}
.brand{font-weight:800;letter-spacing:.06em;text-decoration:none;color:var(--text);position:relative}
.brand::after{content:"";position:absolute;left:0;bottom:-2px;height:2px;width:0;background:linear-gradient(90deg,var(--brand),var(--brand-2));transition:width .3s}
.brand:hover::after{width:100%}
.lang-switch{display:flex;gap:6px}
.chip{display:inline-flex;gap:8px;align-items:center;padding:6px 10px;border-radius:999px;background:rgba(255,255,255,.08);backdrop-filter:blur(6px);font-weight:700;letter-spacing:.02em;border:1px solid rgba(255,255,255,.12);cursor:pointer}
.chip.active{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0a0b0f;border-color:transparent}

.hamburger{display:none;position:relative;width:40px;height:40px;border:1px solid rgba(255,255,255,.12);border-radius:12px;background:transparent;color:var(--text);cursor:pointer;z-index:60}
.hamburger span{position:absolute;left:10px;right:10px;height:2px;background:#e8ecf2;transition:transform .2s,opacity .2s}
.hamburger span:nth-child(1){top:12px}
.hamburger span:nth-child(2){top:19px}
.hamburger span:nth-child(3){top:26px}
.hamburger[aria-expanded="true"] span:nth-child(1){transform:translateY(7px) rotate(45deg)}
.hamburger[aria-expanded="true"] span:nth-child(2){opacity:0}
.hamburger[aria-expanded="true"] span:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.nav-actions{display:flex;gap:8px;align-items:center;z-index:58}
.btn.small{padding:8px 12px;font-size:.92rem}
@media (max-width: 860px){
  .hamburger{display:inline-block}
  .nav-actions{position:fixed;top:64px;right:16px;left:16px;display:grid;grid-template-columns:1fr;gap:8px;background:rgba(20,24,34,.98);padding:12px;border:1px solid rgba(255,255,255,.12);border-radius:16px;transform-origin:top;transform:scaleY(0);opacity:0;pointer-events:none;transition:transform .18s ease,opacity .18s ease;box-shadow:0 30px 80px rgba(0,0,0,.6);z-index:58}
  .nav-actions.open{transform:scaleY(1);opacity:1;pointer-events:auto}
}

/* hero */
.hero{position:relative;border-radius:var(--radius);overflow:hidden;box-shadow:0 20px 50px rgba(0,0,0,.45);isolation:isolate;margin-top:8px;transform:translateZ(0)}
.hero-img{display:block;width:100%;height:auto;filter:saturate(1.05) contrast(1.02);transform:scale(1.02);will-change:transform}
.parallax .hero-img{transform-origin:center center}
.hero-overlay{position:absolute;inset:auto 0 0 0;padding:20px;background:linear-gradient(180deg, transparent, rgba(0,0,0,.6) 40%, rgba(0,0,0,.78));display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end}
.title{font-size:clamp(34px,7vw,72px);margin:0 8px 0 0;line-height:1}
.subtitle{margin:0 8px;opacity:.9}
.shine{position:absolute;inset:-40% -20% auto -20%;height:60%;background:radial-gradient(60% 60% at 50% 0%, rgba(255,255,255,.12), transparent 60%);animation:shine 8s linear infinite;pointer-events:none}

/* sections */
.section{padding:calc(var(--space-lg) + 8px) 0}
.section-head{display:flex;align-items:end;justify-content:space-between;gap:12px;margin-bottom:var(--space-md)}
.section h2{margin:0;font-size:clamp(24px,4vw,36px)}
.controls{display:flex;gap:10px;flex-wrap:wrap}
.input{background:var(--surface);border:1px solid rgba(255,255,255,.06);color:var(--text);padding:12px 14px;border-radius:14px;min-width:200px;transition:border-color .2s, box-shadow .2s, transform .08s}
.input:focus{outline:none;border-color:rgba(121,214,255,.9);box-shadow:var(--ring);transform:translateY(-1px)}

/* buttons */
.btn{display:inline-flex;align-items:center;gap:10px;padding:10px 14px;border-radius:14px;border:1px solid transparent;text-decoration:none;cursor:pointer;transition:transform .08s, box-shadow .2s, opacity .2s}
.btn:active{transform:translateY(1px)}
.btn.primary{background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0a0b0f;font-weight:700;box-shadow:0 0 0 0 rgba(121,214,255,.45);animation:btnPulse 2.8s ease-out infinite}
@keyframes btnPulse{0%{box-shadow:0 0 0 0 rgba(121,214,255,.45)}70%{box-shadow:0 0 0 16px rgba(121,214,255,0)}100%{box-shadow:0 0 0 0 rgba(121,214,255,0)}}
.btn.ghost{background:transparent;border-color:rgba(255,255,255,.12);color:var(--text);opacity:.9}
.btn.ghost:hover{opacity:1}
.btn.big{padding:14px 18px;font-size:1.02rem}

/* signup */
.signup .signup-card{position:relative;overflow:hidden;border-radius:var(--radius);
  background:linear-gradient(135deg, rgba(125,255,214,.08), rgba(183,155,255,.08));
  border:1px solid rgba(255,255,255,.12);padding:24px 20px;box-shadow:0 18px 50px rgba(0,0,0,.35);}
.signup .eyebrow{letter-spacing:.12em;font-weight:800;opacity:.95;color:#cbb6ff;margin-bottom:6px}
.signup .cta-row{display:flex;gap:10px;flex-wrap:wrap;margin-top:10px}

/* sticky signup bar */
.signup-bar{position:fixed;left:0;right:0;bottom:12px;z-index:70;pointer-events:none}
.bar-inner{display:flex;gap:10px;justify-content:flex-end;align-items:center;background:rgba(12,14,20,.82);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.12);border-radius:16px;padding:8px 10px;box-shadow:0 20px 50px rgba(0,0,0,.45);pointer-events:auto}
.badge{display:inline-block;padding:6px 10px;border-radius:999px;background:rgba(183,155,255,.18);border:1px solid rgba(183,155,255,.4)}

/* timeline: time | line column | card
   line goes visually through the number badges and aligns with cards */
.timeline{--time-col:112px;--num-col:32px;--gap:16px;list-style:none;padding:0;margin:16px 0;position:relative;display:grid;grid-template-columns:var(--time-col) var(--num-col) 1fr;column-gap:var(--gap);row-gap:14px}
.timeline.line-through::before{content:"";position:absolute;left:calc(var(--time-col) + var(--gap) + var(--num-col)/2);top:0;bottom:0;width:2px;background:linear-gradient(var(--brand), var(--brand-2));opacity:.5;z-index:0}
.time{grid-column:1;align-self:center;font-variant-numeric:tabular-nums;opacity:.95}
.numcard{grid-column:2;align-self:center;justify-self:center;width:44px;height:44px;border-radius:12px;display:flex;align-items:center;justify-content:center;
  background:linear-gradient(135deg,var(--brand),var(--brand-2));color:#0a0b0f;font-weight:800;box-shadow:0 10px 22px rgba(0,0,0,.35);transform:translateY(6px) scale(.96);opacity:0;animation:numPop .7s forwards;font-variant-numeric:tabular-nums;z-index:2}
.numcard.alt{background:linear-gradient(135deg,#7dffd6,#8fd1ff)}
@keyframes numPop{to{opacity:1;transform:translateY(0) scale(1)}}
.card{grid-column:3;background:rgba(255,255,255,.03);border:1px solid rgba(255,255,255,.08);border-radius:16px;padding:16px 18px;box-shadow:0 10px 30px rgba(0,0,0,.25);transform:translateY(10px) scale(.98);opacity:0;animation:fadeInUp .7s forwards cubic-bezier(.2,.7,.2,1); position:relative}
/* subtle continuity line on card left edge */

.card:hover{transform:translateY(6px) scale(1);transition:transform .25s}
.card h3{margin:0 0 .3rem;font-size:1.08rem}
.meta{opacity:.8}
.speaker{opacity:.85;margin-top:.2rem}
@keyframes fadeInUp{to{opacity:1;transform:translateY(0) scale(1)}}

.grid.exhibitors{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-md)}
.exhibitor{position:relative;background:linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));border:1px solid rgba(255,255,255,.10);border-radius:18px;padding:16px 18px;box-shadow:0 10px 30px rgba(0,0,0,.25)}

.sf-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-md)}
.sf-cards .card{background:linear-gradient(135deg, rgba(125,255,214,.06), rgba(183,155,255,.05));padding:16px 18px}

.info-cards, .travel-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:var(--space-md)}
.info-cards .card, .travel-cards .card{background:transparent;border:1px dashed rgba(255,255,255,.28);padding:16px 18px;display:grid;grid-template-columns:36px 1fr;gap:12px;align-items:start}
.icon{width:28px;height:28px;opacity:.9}
.info-cards .card h3, .travel-cards .card h3{margin:0}
.map-wrap{margin-top:var(--space-md);border-radius:14px;overflow:hidden;border:1px solid rgba(255,255,255,.12);box-shadow:0 12px 30px rgba(0,0,0,.35)}
.map-wrap iframe{width:100%;height:420px;border:0;display:block}

.footer{padding:40px 0 90px;opacity:.75}

.reveal{opacity:0;transform:translateY(8px);transition:opacity .6s, transform .6s}
.reveal.is-visible{opacity:1;transform:translateY(0)}
@media (max-width:640px){
  .timeline{--time-col:90px;--num-col:28px;--gap:16px;grid-template-columns: var(--time-col) var(--num-col) 1fr}
  .timeline.line-through::before{left:calc(var(--time-col) + var(--gap) + var(--num-col)/2)}
}