:root{
  --primary:#00205B;
  --primary-dark:#001338;
  --primary-light:#2a4a8c;
  --accent:#c5a572;
  --amber:#e6c77a;
  --bg:#f4f3ee;
  --surface:#ffffff;
  --text:#141824;
  --muted:#5a6178;
  --border:#e2dfd4;
  --radius:14px;
  --shadow:0 6px 24px rgba(0,32,91,.08);
  --shadow-lg:0 20px 60px rgba(0,32,91,.16);
  --maxw:1200px;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:"Pretendard","Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",system-ui,sans-serif;
  background:var(--bg);color:var(--text);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img{max-width:100%;display:block}
.container{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---------- Header ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:rgba(247,244,236,.92);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:72px}
.brand{display:flex;align-items:center;gap:12px;font-weight:800;font-size:18px;color:var(--primary-dark)}
.brand-mark{
  width:38px;height:38px;border-radius:10px;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  display:grid;place-items:center;color:#fff;font-weight:900;font-size:15px;
  box-shadow:var(--shadow);
}
.nav-links{display:flex;gap:32px;list-style:none}
.nav-links a{
  font-weight:500;font-size:15px;color:var(--text);position:relative;padding:6px 0;
  transition:color .2s;
}
.nav-links a:hover,.nav-links a.active{color:var(--primary)}
.nav-links a.active::after{
  content:"";position:absolute;bottom:-2px;left:0;right:0;height:2px;
  background:var(--primary);border-radius:2px;
}
.nav-right{display:flex;gap:12px;align-items:center}
.lang-toggle{
  background:transparent;border:1px solid var(--border);border-radius:999px;
  padding:6px 14px;font-size:13px;font-weight:600;cursor:pointer;color:var(--text);
}
.lang-toggle:hover{border-color:var(--primary);color:var(--primary)}
.btn{
  display:inline-block;padding:12px 22px;border-radius:999px;font-weight:600;
  font-size:14px;transition:all .2s;border:none;cursor:pointer;white-space:nowrap;
}
.btn-primary{background:var(--primary);color:#fff}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-accent{background:var(--accent);color:#fff}
.btn-accent:hover{background:#a8894e;transform:translateY(-1px);box-shadow:var(--shadow)}
.btn-ghost{background:transparent;color:var(--primary);border:1.5px solid var(--primary)}
.btn-ghost:hover{background:var(--primary);color:#fff}
.btn-lg{padding:16px 32px;font-size:16px}
.menu-toggle{display:none;background:none;border:none;font-size:26px;cursor:pointer;color:var(--text);line-height:0}

/* ---------- Hero ---------- */
.hero{
  position:relative;overflow:hidden;
  background:
    radial-gradient(ellipse at 80% 20%,rgba(197,165,114,.22),transparent 50%),
    radial-gradient(ellipse at 10% 90%,rgba(0,32,91,.10),transparent 50%),
    linear-gradient(180deg,#f4f3ee 0%,#e6e4d8 100%);
  padding:80px 0 120px;
}
.hero-inner{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.hero-badge{
  display:inline-flex;align-items:center;gap:8px;
  background:rgba(0,32,91,.1);color:var(--primary-dark);
  padding:8px 16px;border-radius:999px;font-size:13px;font-weight:600;
  margin-bottom:24px;
}
.hero-badge::before{content:"";width:6px;height:6px;border-radius:50%;background:var(--accent);animation:pulse 2s infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.4}}
.hero h1{
  font-size:clamp(36px,5.5vw,64px);line-height:1.08;font-weight:800;
  color:var(--primary-dark);letter-spacing:-0.02em;margin-bottom:20px;
}
.hero h1 .accent{
  background:linear-gradient(120deg,var(--accent) 0%,var(--amber) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.hero-meta{display:flex;gap:32px;margin:28px 0 36px;flex-wrap:wrap}
.hero-meta div{display:flex;align-items:center;gap:10px;font-weight:600;color:var(--primary-dark)}
.hero-meta .icon{
  width:36px;height:36px;border-radius:10px;background:#fff;
  display:grid;place-items:center;box-shadow:var(--shadow);color:var(--primary);
}
.hero-meta .icon iconify-icon{font-size:20px}
.hero p.lead{font-size:18px;color:var(--muted);margin-bottom:32px;max-width:540px}
.hero-cta{display:flex;gap:14px;flex-wrap:wrap}
.hero-visual{position:relative;height:480px}
.hero-card{
  position:absolute;background:var(--surface);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:24px;
}
.hero-card-1{
  top:0;right:20px;width:260px;
  transform:rotate(-3deg);
}
.hero-card-2{
  bottom:40px;left:0;width:240px;
  transform:rotate(2deg);
}
.hero-card-3{
  top:150px;right:120px;width:200px;
  transform:rotate(4deg);
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  color:#fff;
}
.hero-card-img{
  height:140px;border-radius:10px;margin-bottom:14px;
  background:linear-gradient(135deg,#dfe4f0,#efe4c9);
  display:grid;place-items:center;color:var(--primary-dark);
}
.hero-card-img iconify-icon{font-size:56px}
.hero-card h4{font-size:14px;margin-bottom:4px}
.hero-card p{font-size:12px;color:var(--muted);margin:0}
.hero-card-3 p{color:rgba(255,255,255,.85)}
.hero-card-3 .big{font-size:44px;font-weight:900;line-height:1;margin:8px 0}

/* ---------- Sections ---------- */
section{padding:100px 0}
.section-head{text-align:center;margin-bottom:60px}
.eyebrow{
  display:inline-block;color:var(--primary);font-weight:700;font-size:13px;
  letter-spacing:.12em;text-transform:uppercase;margin-bottom:12px;
}
.section-head h2{
  font-size:clamp(28px,3.5vw,44px);font-weight:800;color:var(--primary-dark);
  letter-spacing:-.02em;line-height:1.15;
}
.section-head p{color:var(--muted);font-size:17px;max-width:640px;margin:16px auto 0}

/* ---------- About stats ---------- */
.about{background:var(--surface)}
.stats{
  display:grid;grid-template-columns:repeat(4,1fr);gap:24px;margin-top:48px;
}
.stat{
  text-align:center;padding:32px 20px;border-radius:var(--radius);
  background:linear-gradient(180deg,#fff,#fdfaf1);border:1px solid var(--border);
}
.stat-num{
  font-size:48px;font-weight:900;color:var(--primary);line-height:1;
  background:linear-gradient(135deg,var(--primary) 0%,var(--primary-light) 100%);
  -webkit-background-clip:text;background-clip:text;color:transparent;
}
.stat-label{color:var(--muted);font-size:14px;font-weight:500;margin-top:8px}

/* ---------- Speakers ---------- */
.speakers-grid{
  display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:28px;
}
.speaker-card{
  background:var(--surface);border-radius:var(--radius);overflow:hidden;
  border:1px solid var(--border);transition:all .3s;
}
.speaker-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);border-color:var(--primary-light)}
.speaker-photo{
  aspect-ratio:1;display:grid;place-items:center;font-size:56px;font-weight:900;
  color:#fff;letter-spacing:-.03em;
}
.speaker-photo.g1{background:linear-gradient(135deg,#00205B,#2a4a8c)}
.speaker-photo.g2{background:linear-gradient(135deg,#2a4a8c,#c5a572)}
.speaker-photo.g3{background:linear-gradient(135deg,#001338,#00205B)}
.speaker-photo.g4{background:linear-gradient(135deg,#c5a572,#e6c77a)}
.speaker-photo.g5{background:linear-gradient(135deg,#00205B,#c5a572)}
.speaker-photo.g6{background:linear-gradient(135deg,#2a4a8c,#001338)}
.speaker-info{padding:20px}
.speaker-info h4{font-size:17px;color:var(--primary-dark);margin-bottom:4px}
.speaker-info .role{font-size:13px;color:var(--primary);font-weight:600;margin-bottom:2px}
.speaker-info .org{font-size:12px;color:var(--muted)}

/* ---------- Features ---------- */
.features{background:linear-gradient(180deg,var(--bg) 0%,#fff 100%)}
.features-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:24px}
.feature{
  background:var(--surface);padding:32px;border-radius:var(--radius);
  border:1px solid var(--border);transition:all .3s;
}
.feature:hover{transform:translateY(-4px);box-shadow:var(--shadow);border-color:var(--primary-light)}
.feature-icon{
  width:56px;height:56px;border-radius:14px;
  background:linear-gradient(135deg,rgba(0,32,91,.12),rgba(197,165,114,.14));
  display:grid;place-items:center;margin-bottom:18px;color:var(--primary);
}
.feature-icon iconify-icon{font-size:28px}
.feature h3{font-size:19px;color:var(--primary-dark);margin-bottom:8px}
.feature p{color:var(--muted);font-size:14px}

/* ---------- Agenda ---------- */
.agenda-tabs{
  display:flex;gap:12px;justify-content:center;margin-bottom:40px;flex-wrap:wrap;
}
.tab{
  padding:12px 24px;border-radius:999px;background:var(--surface);
  border:1.5px solid var(--border);cursor:pointer;font-weight:600;font-size:14px;
  color:var(--text);transition:all .2s;
}
.tab:hover{border-color:var(--primary)}
.tab.active{background:var(--primary);color:#fff;border-color:var(--primary)}
.agenda-list{max-width:860px;margin:0 auto;display:none}
.agenda-list.active{display:block}
.agenda-item{
  display:grid;grid-template-columns:140px 1fr auto;gap:24px;padding:24px;
  background:var(--surface);border-radius:var(--radius);margin-bottom:12px;
  border-left:4px solid var(--primary);transition:all .2s;
}
.agenda-item:hover{transform:translateX(4px);box-shadow:var(--shadow)}
.agenda-item.break{border-left-color:var(--amber);background:#faf6e8}
.agenda-item.keynote{border-left-color:var(--accent)}
.agenda-time{font-weight:700;color:var(--primary-dark);font-size:15px}
.agenda-body h4{font-size:17px;color:var(--primary-dark);margin-bottom:6px}
.agenda-body p{font-size:13px;color:var(--muted)}
.agenda-tag{
  font-size:11px;padding:4px 10px;border-radius:999px;
  background:rgba(0,32,91,.1);color:var(--primary);font-weight:700;
  letter-spacing:.05em;text-transform:uppercase;align-self:start;
}
.agenda-item.keynote .agenda-tag{background:rgba(197,165,114,.18);color:#8a6d3a}
.agenda-item.break .agenda-tag{background:rgba(230,199,122,.25);color:#8a6d3a}

/* ---------- Location ---------- */
.location-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:60px;align-items:center}
.location-map{
  aspect-ratio:4/3;border-radius:var(--radius);overflow:hidden;
  background:linear-gradient(135deg,#dfe4f0,#efe4c9);
  display:grid;place-items:center;box-shadow:var(--shadow-lg);
  position:relative;color:var(--primary);
}
.location-map iconify-icon{font-size:120px;z-index:1}
.location-map::after{
  content:"";position:absolute;inset:0;
  background:radial-gradient(circle at 50% 50%,transparent 40%,rgba(0,19,56,.1) 100%);
}
.location-info h2{font-size:40px;color:var(--primary-dark);margin-bottom:16px}
.location-info .venue{font-size:20px;color:var(--primary);font-weight:700;margin-bottom:8px}
.location-info .addr{color:var(--muted);margin-bottom:28px}
.location-facts{display:grid;grid-template-columns:1fr 1fr;gap:16px;margin-bottom:28px}
.location-fact{
  padding:16px;background:var(--surface);border-radius:12px;border:1px solid var(--border);
}
.location-fact .lbl{font-size:12px;color:var(--muted);margin-bottom:4px}
.location-fact .val{font-weight:700;color:var(--primary-dark)}

/* ---------- Partners ---------- */
.partners-group{margin-bottom:60px}
.partners-group h3{
  text-align:center;font-size:14px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--muted);margin-bottom:28px;font-weight:700;
}
.partner-logos{
  display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:20px;
}
.partner-logo{
  aspect-ratio:2/1;background:var(--surface);border:1px solid var(--border);
  border-radius:12px;display:grid;place-items:center;color:var(--muted);
  font-weight:700;transition:all .2s;padding:16px;text-align:center;font-size:13px;
}
.partner-logo:hover{border-color:var(--primary);color:var(--primary);transform:translateY(-2px)}

/* ---------- Tickets ---------- */
.tickets-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:28px;max-width:1080px;margin:0 auto}
.ticket{
  background:var(--surface);border-radius:20px;padding:40px 32px;
  border:2px solid var(--border);position:relative;transition:all .3s;
}
.ticket:hover{transform:translateY(-6px);box-shadow:var(--shadow-lg)}
.ticket.featured{border-color:var(--primary);background:linear-gradient(180deg,#fff,#f1f3fa)}
.ticket.featured::before{
  content:"MOST POPULAR";position:absolute;top:-12px;left:50%;transform:translateX(-50%);
  background:var(--accent);color:#fff;padding:6px 16px;border-radius:999px;
  font-size:11px;font-weight:700;letter-spacing:.08em;
}
.ticket h3{font-size:22px;color:var(--primary-dark);margin-bottom:8px}
.ticket .price{font-size:44px;font-weight:900;color:var(--primary);margin:16px 0}
.ticket .price small{font-size:15px;color:var(--muted);font-weight:500}
.ticket ul{list-style:none;margin:24px 0}
.ticket li{padding:10px 0;border-bottom:1px solid var(--border);font-size:14px;color:var(--text);display:flex;gap:10px}
.ticket li::before{content:"✓";color:var(--primary);font-weight:900}
.ticket li:last-child{border-bottom:none}
.ticket .btn{width:100%;margin-top:8px}

/* ---------- CTA band ---------- */
.cta-band{
  background:linear-gradient(135deg,var(--primary-dark) 0%,var(--primary) 100%);
  color:#fff;text-align:center;border-radius:24px;padding:72px 24px;
  margin:80px auto;max-width:var(--maxw);position:relative;overflow:hidden;
}
.cta-band::before{
  content:"";position:absolute;top:-50%;right:-20%;width:600px;height:600px;
  background:radial-gradient(circle,rgba(197,165,114,.28),transparent 60%);
}
.cta-band h2{font-size:clamp(28px,4vw,42px);margin-bottom:16px;position:relative}
.cta-band p{font-size:18px;opacity:.9;margin-bottom:32px;position:relative}
.cta-band .btn-accent{position:relative}

/* ---------- Footer ---------- */
footer{
  background:var(--primary-dark);color:rgba(255,255,255,.8);padding:80px 0 32px;
}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:48px;margin-bottom:48px}
.footer-brand{display:flex;align-items:center;gap:12px;margin-bottom:20px;color:#fff;font-weight:800;font-size:20px}
.footer-brand .brand-mark{background:linear-gradient(135deg,var(--primary-light),var(--amber))}
.footer-col h4{color:#fff;font-size:14px;margin-bottom:18px;letter-spacing:.08em;text-transform:uppercase}
.footer-col ul{list-style:none}
.footer-col li{margin-bottom:10px}
.footer-col a{font-size:14px;transition:color .2s}
.footer-col a:hover{color:var(--amber)}
.footer-bottom{
  padding-top:32px;border-top:1px solid rgba(255,255,255,.1);
  display:flex;justify-content:space-between;align-items:center;font-size:13px;
  opacity:.7;flex-wrap:wrap;gap:16px;
}
.social{display:flex;gap:14px}
.social a{
  width:36px;height:36px;border-radius:50%;background:rgba(255,255,255,.08);
  display:grid;place-items:center;transition:all .2s;color:#fff;
}
.social iconify-icon{font-size:18px}
.social a:hover{background:var(--amber);color:var(--primary-dark)}

/* ---------- Page hero (sub pages) ---------- */
.page-hero{
  padding:80px 0 60px;text-align:center;
  background:
    radial-gradient(ellipse at 50% 0%,rgba(0,32,91,.1),transparent 60%),
    var(--bg);
  border-bottom:1px solid var(--border);
}
.page-hero h1{
  font-size:clamp(36px,5vw,56px);color:var(--primary-dark);
  font-weight:800;letter-spacing:-.02em;margin-bottom:12px;
}
.page-hero p{font-size:18px;color:var(--muted);max-width:640px;margin:0 auto}

/* ---------- Responsive ---------- */
@media (max-width:900px){
  .nav-links,.nav-right .btn{display:none}
  .menu-toggle{display:block}
  .nav-links.open{
    display:flex;position:absolute;top:72px;left:0;right:0;
    flex-direction:column;background:var(--surface);padding:24px;gap:20px;
    border-bottom:1px solid var(--border);box-shadow:var(--shadow);
  }
  .hero-inner,.location-grid{grid-template-columns:1fr;gap:40px}
  .hero-visual{height:380px}
  .features-grid,.tickets-grid{grid-template-columns:1fr}
  .stats{grid-template-columns:repeat(2,1fr)}
  .footer-grid{grid-template-columns:1fr 1fr;gap:32px}
  .agenda-item{grid-template-columns:1fr;gap:8px}
  section{padding:72px 0}
  .hero{padding:60px 0 80px}
}