:root{
  --bg:#f6f7f9; --surface:#ffffff; --text:#0f172a; --muted:#64748b;
  --primary:#1e90ff; --primary-600:#1777d1; --accent:#f59e0b;
  --line:#e5e7eb; --shadow:0 12px 30px rgba(2,6,23,0.08);
  --radius: 14px;
  --container: 1200px;
  --hero-overlay: rgba(11,31,61,.64);
  --cta:#0b1f3d;
  font-synthesis-weight:none;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";
  color:var(--text);
  background:var(--bg);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* Layout */
.sg-container{width:100%;max-width:var(--container);margin:0 auto;padding:0 20px}
.sg-header{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.9);backdrop-filter:saturate(120%) blur(6px);border-bottom:1px solid var(--line)}
.sg-header-inner{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 0}
.sg-site-title{font-weight:700;text-decoration:none;color:var(--text)}
.sg-menu{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.sg-menu a{color:var(--text);text-decoration:none;padding:8px 10px;border-radius:9px}
.sg-menu a:hover{background:#f1f5f9}

.sg-main{display:block}
.sg-section{padding:64px 0}
.sg-center{text-align:center}

/* Hero */
.sg-hero{
  position:relative;display:flex;align-items:center;min-height:64vh;color:#fff;
  background-image: linear-gradient(var(--hero-overlay),var(--hero-overlay)), var(--hero-bg);
  background-size:cover;background-position:center;
}
.sg-hero-title{font-family:Poppins,Inter,system-ui,sans-serif;font-size: clamp(30px, 4vw, 54px);line-height:1.15;margin:0 0 10px;font-weight:700}
.sg-hero-sub{font-size: clamp(16px, 2.2vw, 22px);opacity:.95;margin: 0 0 22px}
.sg-btn{display:inline-block;padding:14px 22px;border-radius:12px;text-decoration:none;font-weight:600;box-shadow:var(--shadow)}
.sg-btn-primary{background:var(--primary);color:#fff}
.sg-btn-primary:hover{background:var(--primary-600)}

/* Cards / grid */
.sg-grid{display:grid;gap:24px}
.sg-grid-2{grid-template-columns: repeat(2, minmax(0,1fr))}
.sg-grid-3{grid-template-columns: repeat(3, minmax(0,1fr))}
@media (max-width: 900px){
  .sg-grid-2,.sg-grid-3{grid-template-columns:1fr}
}
.sg-card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:var(--shadow);text-align:center}
.sg-icon{font-size:34px;margin-bottom:10px}

/* Image helpers */
.sg-img-cover{width:100%;height:100%;object-fit:cover}
.sg-rounded{border-radius:var(--radius)}
.sg-img-placeholder{display:flex;align-items:center;justify-content:center;background:#eef2f7;color:#475569;height:260px;border:1px dashed #cbd5e1}

/* Sponsors grid */
.sg-sponsors .sg-sponsors-grid{margin-top:24px}
.sg-sponsors .sg-sponsor-item{display:flex;align-items:center;justify-content:center;background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:18px;height:110px;box-shadow:var(--shadow);transition:transform .18s ease}
.sg-sponsors .sg-sponsor-item:hover{transform:translateY(-4px)}
.sg-sponsor-logo{max-height:60px;width:auto;filter:grayscale(15%);opacity:.95}
.sg-sponsor-placeholder{display:flex;align-items:center;justify-content:center;color:#475569;height:60px}

/* Sponsors grid columns (shortcode) */
.sg-sponsors .cols-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}
.sg-sponsors .cols-3{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:18px}
.sg-sponsors .cols-4{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:18px}
.sg-sponsors .cols-5{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:18px}
.sg-sponsors .cols-6{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:18px}
@media (max-width: 900px){
  .sg-sponsors .cols-5,.sg-sponsors .cols-6{grid-template-columns:repeat(3,minmax(0,1fr))}
}
@media (max-width: 640px){
  .sg-sponsors .cols-3,.sg-sponsors .cols-4,.sg-sponsors .cols-5,.sg-sponsors .cols-6{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* Steps */
.sg-steps .sg-steps-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px}
.sg-step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:28px;box-shadow:var(--shadow);text-align:center}
.sg-step-num{font-size:18px;font-weight:700;background:#0ea5e9;color:#fff;display:inline-flex;width:40px;height:40px;border-radius:50%;align-items:center;justify-content:center;margin-bottom:10px}
@media (max-width: 900px){
  .sg-steps .sg-steps-grid{grid-template-columns:1fr}
}

/* Quotes */
.sg-quote{background:var(--surface);border-left:4px solid var(--accent);padding:18px 22px;border-radius:var(--radius);box-shadow:var(--shadow)}
.sg-quote p{margin:0 0 8px}
.sg-quote cite{color:var(--muted);font-style:normal}

/* CTA */
.sg-cta{background:var(--cta);color:#fff;text-align:center}
.sg-cta h2{margin-top:0}

/* Footer */
.sg-footer{background:#0b1220;color:#cbd5e1;padding:40px 0;margin-top:40px}
.sg-footer h4{color:#fff;margin-top:0}
.sg-footer a{color:#e5e7eb;text-decoration:none}
.sg-footer a:hover{text-decoration:underline}
.sg-footer-grid{display:grid;grid-template-columns:2fr 2fr 1fr;gap:24px}
@media (max-width: 900px){ .sg-footer-grid{grid-template-columns:1fr} }
.sg-copy{margin-top:14px;border-top:1px solid #1f2937;padding-top:12px;font-size:14px;color:#94a3b8}

/* Reveal on scroll */
[data-reveal]{opacity:0;transform:translateY(12px);transition:opacity .5s ease, transform .5s ease}
[data-reveal].is-visible{opacity:1;transform:none}