:root{
  --navy:#061b2e;
  --navy-2:#0a2f4d;
  --blue:#1278b6;
  --ice:#dff6ff;
  --ice-2:#bde8fb;
  --white:#fff;
  --ink:#08233b;
  --muted:#577188;
  --orange:#ff9828;
  --shadow:0 22px 70px rgba(5,35,59,.15);
  --radius:24px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:#eef9ff;overflow-x:hidden}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}
.wrap{width:min(1180px,calc(100% - 40px));margin:0 auto}
.centered{text-align:center}

.site-header{position:fixed;inset:0 0 auto;z-index:50;background:rgba(4,23,39,.82);backdrop-filter:blur(18px);border-bottom:1px solid rgba(255,255,255,.12)}
.nav-wrap{height:78px;display:flex;align-items:center;justify-content:space-between;gap:30px}
.brand{width:88px;position:relative;align-self:flex-start;padding-top:10px}
.brand img{width:88px;height:88px;object-fit:cover;border-radius:50%;box-shadow:0 8px 26px rgba(0,0,0,.28);border:3px solid rgba(255,255,255,.92)}
.nav{display:flex;gap:32px;align-items:center}
.nav a{color:#e7f6ff;font-family:"Barlow Condensed",sans-serif;text-transform:uppercase;font-weight:800;letter-spacing:.06em;font-size:1rem}
.nav a:hover{color:#82d7ff}
.nav-toggle{display:none;background:none;border:0;color:#fff;font-size:1.8rem}

.hero{background-image:linear-gradient(rgba(4,23,39,.78),rgba(4,23,39,.45)),url(assets/hero-scene.png);background-size:cover;min-height:780px;position:relative;padding:132px 0 70px;background-position:center;overflow:hidden}
.hero:after{content:"";position:absolute;inset:0;background:radial-gradient(circle at 15% 20%,rgba(255,255,255,.55),transparent 20%),radial-gradient(circle at 75% 15%,rgba(255,255,255,.25),transparent 22%);pointer-events:none}
.hero-grid{display:grid;grid-template-columns:1.05fr .95fr;align-items:center;gap:36px;position:relative;z-index:2}
.hero-copy{padding:34px 0 30px;color:#fff;text-shadow:0 2px 18px rgba(3,26,46,.2)}
.eyebrow{display:inline-block;font-family:"Barlow Condensed",sans-serif;text-transform:uppercase;font-weight:800;letter-spacing:.12em;font-size:.95rem;color:#d9f6ff;margin-bottom:14px}
.eyebrow.blue{color:var(--blue)}
.eyebrow.icy{color:#81d9ff}
.hero h1,.section h2,.footer h2{font-family:"Barlow Condensed",sans-serif;text-transform:uppercase;letter-spacing:.015em;margin:0;color:var(--navy);line-height:.88}
.hero h1{font-size:clamp(4.7rem,8.5vw,8rem);color:#fff;text-shadow:0 8px 0 rgba(5,31,51,.11)}
.hero h1 span{display:block;color:var(--navy);-webkit-text-stroke:1px rgba(255,255,255,.16)}
.hero-ribbon{display:inline-block;background:linear-gradient(90deg,#0d416b,#145d8f);color:#fff;font-family:"Barlow Condensed",sans-serif;text-transform:uppercase;letter-spacing:.08em;font-size:1.5rem;font-weight:800;padding:10px 22px;margin:20px 0 14px;clip-path:polygon(3% 0,97% 0,100% 50%,97% 100%,3% 100%,0 50%)}
.hero-kicker{font-weight:800;text-transform:uppercase;letter-spacing:.08em;margin:4px 0 10px}
.hero-tagline{font-size:2.3rem;font-family:cursive;font-style:italic;margin:0 0 16px;color:#FFFFFF}
.hero-text{max-width:650px;line-height:1.7;font-size:1.06rem;color:#FFFFFF}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin-top:26px}
.btn{display:inline-flex;align-items:center;justify-content:center;min-height:48px;padding:0 22px;border-radius:11px;font-weight:800;transition:.2s ease;border:1px solid transparent;box-shadow:0 10px 22px rgba(6,35,58,.12)}
.btn:hover{transform:translateY(-2px)}
.btn-primary{background:linear-gradient(180deg,#1683c2,#0b5d91);color:#fff;border-color:#64c4f0}
.btn-ghost{background:rgba(255,255,255,.65);color:var(--navy);border-color:rgba(255,255,255,.8);backdrop-filter:blur(8px)}
.btn-large{padding:0 32px;min-height:56px}
.hero-facts{display:flex;gap:18px;flex-wrap:wrap;margin-top:32px}
.hero-facts>div{background:rgba(255,255,255,.68);color:var(--navy);border:1px solid rgba(255,255,255,.85);padding:13px 16px;border-radius:14px;min-width:205px;backdrop-filter:blur(10px)}
.hero-facts strong,.hero-facts span{display:block}.hero-facts span{font-size:.78rem;margin-top:4px;color:#48677e}
.hero-art{position:relative;transform:translateX(3%);filter:drop-shadow(0 25px 25px rgba(6,28,46,.18))}.hero-art img{border-radius:32px}
.ice-edge{height:40px;position:absolute;bottom:-1px;left:0;right:0;background:linear-gradient(#fff,#eefaff);clip-path:polygon(0 35%,3% 24%,6% 38%,9% 20%,13% 44%,17% 28%,22% 46%,27% 22%,31% 39%,37% 16%,42% 41%,49% 28%,54% 47%,60% 22%,65% 39%,71% 19%,76% 42%,82% 25%,88% 45%,93% 22%,97% 39%,100% 25%,100% 100%,0 100%)}

.section{padding:100px 0;position:relative}.section-heading{max-width:850px;margin:0 auto 46px}.section h2,.footer h2{font-size:clamp(3rem,5vw,4.6rem)}.section-heading p,.lead{font-size:1.07rem;line-height:1.75;color:#536f85}.speakers-section{background:linear-gradient(180deg,#fff,#edf9ff)}
.speaker-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:18px}.speaker-card{background:rgba(255,255,255,.75);border:1px solid #cae7f7;border-radius:19px;padding:10px 10px 16px;text-align:center;box-shadow:0 12px 30px rgba(29,91,124,.08);transition:.2s ease}.speaker-card:hover{transform:translateY(-5px);box-shadow:0 16px 38px rgba(29,91,124,.14)}.speaker-card img{border-radius:14px;width:100%;aspect-ratio:1.25/1;object-fit:cover}.speaker-card h3{font-family:"Barlow Condensed",sans-serif;font-size:1.45rem;margin:12px 0 2px}.speaker-card span{font-size:.78rem;color:#7891a4}.cta-row{margin-top:36px}

.ctf-section{background:linear-gradient(135deg,#03182b,#0b3556 58%,#0a4c76);color:#fff;overflow:hidden}.ctf-section:before{content:"";position:absolute;inset:0;background-image:radial-gradient(#90dcff 1px,transparent 1px);background-size:28px 28px;opacity:.14}.ctf-grid{display:grid;grid-template-columns:.88fr 1.12fr;gap:46px;align-items:center;position:relative;z-index:2}.ctf-section h2{color:#fff;font-size:clamp(2.8rem,4vw,3.8rem)}.ctf-copy>p{font-size:1.08rem;line-height:1.7;color:#cce8f6}.feature-list{list-style:none;padding:0;margin:24px 0}.feature-list li{margin:13px 0;padding-left:28px;position:relative}.feature-list li:before{content:"❄";position:absolute;left:0;color:#6dd1ff}.mini-card{background:rgba(11,71,108,.75);border:1px solid #367ca6;border-radius:17px;padding:20px 22px;max-width:460px}.mini-card strong{font-size:1.05rem}.mini-card p{color:#d8edf7;line-height:1.55;margin-bottom:10px}.mini-card a{color:#83d7ff;font-weight:800}.ctf-art{position:relative}.ctf-art img{border-radius:26px;border:1px solid rgba(255,255,255,.15);box-shadow:0 28px 60px rgba(0,0,0,.3)}.hosted-badge{position:absolute;right:24px;top:24px;background:rgba(5,25,41,.86);border:1px solid rgba(255,255,255,.18);padding:13px 16px;border-radius:12px;text-transform:uppercase;font-family:"Barlow Condensed",sans-serif;font-weight:700;letter-spacing:.04em}.hosted-badge strong{color:var(--orange)}

.sponsor-section{background:linear-gradient(180deg,#eefaff,#fff)}.sponsor-grid{display:grid;grid-template-columns:1fr .82fr;gap:38px;align-items:center}.sponsor-benefits{display:grid;grid-template-columns:repeat(3,1fr);gap:14px;margin:28px 0}.benefit{background:#fff;border:1px solid #cce6f5;border-radius:18px;padding:20px;box-shadow:0 12px 28px rgba(29,91,124,.07)}.benefit span{font-size:1.7rem;color:#146ca4}.benefit strong{display:block;margin:8px 0}.benefit p{font-size:.9rem;line-height:1.5;color:#657e91;margin:0}.sponsor-art img{filter:drop-shadow(0 20px 28px rgba(4,41,67,.14))}

.footer{background:#061b2e;color:#dbeefa;padding:84px 0 22px;position:relative}.footer-ice{top:-1px;bottom:auto;transform:rotate(180deg)}.footer-grid{display:grid;grid-template-columns:1fr 1fr;gap:70px;align-items:start}.footer h2{color:#fff}.footer p{line-height:1.7;color:#aac7d9}.contact-card{display:grid;gap:14px}.contact-card a{display:flex;align-items:center;gap:14px;padding:17px 18px;border-radius:16px;background:#0b2e49;border:1px solid #184a6d}.contact-card a>span{width:42px;height:42px;display:grid;place-items:center;border-radius:10px;background:#1278b6;color:#fff;font-weight:800}.contact-card small,.contact-card strong{display:block}.contact-card small{color:#8db7d0;text-transform:uppercase;font-size:.72rem;letter-spacing:.08em;margin-bottom:3px}.contact-card strong{color:#fff}.footer-bottom{margin-top:56px;padding-top:20px;border-top:1px solid rgba(255,255,255,.1);display:grid;grid-template-columns:auto 1fr auto;gap:18px;align-items:center}.footer-bottom img{width:66px;height:66px;border-radius:50%;object-fit:cover}.footer-bottom p{margin:0;font-size:.88rem}.footer-bottom p:nth-child(2){color:#fff;font-weight:700}

.snow{position:fixed;inset:0;pointer-events:none;z-index:99;background-image:radial-gradient(circle,#fff 1.4px,transparent 1.5px),radial-gradient(circle,#d5f3ff 1px,transparent 1.1px);background-size:70px 70px,110px 110px;background-position:0 0,30px 20px;opacity:.25;animation:snowfall 22s linear infinite}.snow-b{background-size:130px 130px,180px 180px;opacity:.16;animation-duration:34s;animation-direction:reverse}@keyframes snowfall{from{background-position:0 -200px,30px -150px}to{background-position:0 200px,30px 250px}}

@media(max-width:960px){.nav{gap:20px}.hero-grid,.ctf-grid,.sponsor-grid,.footer-grid{grid-template-columns:1fr}.hero{padding-top:120px}.hero-art{transform:none}.speaker-grid{grid-template-columns:repeat(3,1fr)}.sponsor-art{max-width:620px;margin:auto}.footer-bottom{grid-template-columns:auto 1fr}.footer-bottom p:last-child{grid-column:1/-1}.hero-copy{text-align:center}.hero-actions,.hero-facts{justify-content:center}.hero-text{margin-left:auto;margin-right:auto}}
@media(max-width:720px){.nav-toggle{display:block}.nav{position:absolute;top:78px;left:20px;right:20px;display:none;flex-direction:column;align-items:stretch;background:#08233b;padding:18px;border-radius:16px;box-shadow:var(--shadow)}.nav.open{display:flex}.brand{width:70px}.brand img{width:70px;height:70px}.hero h1{font-size:4.3rem}.speaker-grid{grid-template-columns:repeat(2,1fr)}.sponsor-benefits{grid-template-columns:1fr}.hero-facts{flex-direction:column;align-items:stretch}.hero-facts>div{min-width:0}.section{padding:78px 0}.wrap{width:min(100% - 28px,1180px)}.footer-bottom{grid-template-columns:1fr;text-align:center}.footer-bottom img{margin:auto}}
@media(max-width:460px){.speaker-grid{grid-template-columns:1fr 1fr;gap:10px}.speaker-card h3{font-size:1.15rem}.speaker-card{padding:8px}.hero-ribbon{font-size:1.18rem}.hero h1{font-size:3.6rem}.btn{width:100%}}