:root{
  --blue:#1a56db;
  --green:#22a765;
  --violet:#6B3FA0;
  --orange:#f97316;
  --ink:#1f2430;
  --muted:#5b6472;
  --bg:#ffffff;
  --bg-soft:#f6f8fc;
  --border:#e6e9f0;
  --radius:16px;
  --shadow:0 10px 30px rgba(20,30,60,.08);
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  font-family:"Nunito",-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif;
  color:var(--ink);
  background:var(--bg);
  line-height:1.6;
}

a{color:inherit;text-decoration:none;}
img{max-width:100%;display:block;}

.container{
  width:100%;
  max-width:1140px;
  margin:0 auto;
  padding:0 24px;
}

/* Header */
.site-header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(255,255,255,.92);
  backdrop-filter:blur(8px);
  border-bottom:1px solid var(--border);
}
.site-header .container{
  display:flex;
  align-items:center;
  justify-content:space-between;
  height:76px;
}
.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:800;
  font-size:1.25rem;
}
.brand img{height:44px;width:44px;object-fit:contain;}
.brand-name{
  background:linear-gradient(90deg,var(--blue),var(--green) 55%,var(--violet));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}
.main-nav{display:flex;align-items:center;gap:28px;}
.main-nav a{
  font-weight:700;
  color:var(--ink);
  font-size:.95rem;
}
.main-nav a:hover{color:var(--blue);}
.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  padding:12px 22px;
  border-radius:999px;
  font-weight:800;
  font-size:.95rem;
  border:2px solid transparent;
  cursor:pointer;
  transition:transform .15s ease, box-shadow .15s ease;
}
.btn:hover{transform:translateY(-2px);}
.btn-gradient{
  color:#fff;
  background:linear-gradient(90deg,var(--blue),var(--green) 55%,var(--violet));
  box-shadow:0 8px 20px rgba(107,63,160,.25);
}
.btn-outline{
  color:var(--ink);
  border-color:var(--border);
  background:#fff;
}
.btn-outline:hover{border-color:var(--blue);color:var(--blue);}
.btn-sm{padding:9px 16px;font-size:.85rem;}
.nav-toggle{display:none;}

/* Hero */
.hero{
  padding:72px 0 56px;
  background:
    radial-gradient(1200px 400px at 15% -10%, rgba(26,86,219,.10), transparent 60%),
    radial-gradient(1200px 400px at 85% -10%, rgba(107,63,160,.10), transparent 60%),
    var(--bg-soft);
  text-align:center;
}
.hero img.hero-logo{
  height:120px;
  margin:0 auto 24px;
}
.hero h1{
  font-size:2.4rem;
  margin:0 0 14px;
  font-weight:900;
}
.hero p.lead{
  max-width:640px;
  margin:0 auto 28px;
  color:var(--muted);
  font-size:1.1rem;
}
.hero-actions{
  display:flex;
  gap:14px;
  justify-content:center;
  flex-wrap:wrap;
}

/* Section titles */
.section{padding:64px 0;}
.section-title{
  text-align:center;
  max-width:640px;
  margin:0 auto 44px;
}
.section-title h2{
  font-size:1.9rem;
  margin:0 0 10px;
  font-weight:900;
}
.section-title p{color:var(--muted);margin:0;}
.eyebrow{
  display:inline-block;
  font-size:.78rem;
  font-weight:800;
  letter-spacing:.08em;
  text-transform:uppercase;
  color:var(--violet);
  margin-bottom:10px;
}

/* Activity cards */
.activities{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:28px;
}
.activity-card{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px 26px;
  text-align:center;
  box-shadow:var(--shadow);
  display:flex;
  flex-direction:column;
  align-items:center;
  transition:transform .18s ease, box-shadow .18s ease;
}
.activity-card:hover{
  transform:translateY(-6px);
  box-shadow:0 18px 40px rgba(20,30,60,.14);
}
.activity-logo{
  width:120px;
  height:120px;
  border-radius:50%;
  object-fit:cover;
  margin-bottom:20px;
  border:3px solid var(--bg-soft);
}
.activity-card h3{
  margin:0 0 6px;
  font-size:1.3rem;
  font-weight:900;
}
.activity-tag{
  font-size:.8rem;
  font-weight:800;
  text-transform:uppercase;
  letter-spacing:.05em;
  margin-bottom:14px;
}
.tag-blue{color:var(--blue);}
.tag-orange{color:var(--orange);}
.tag-violet{color:var(--violet);}
.activity-card p.desc{
  color:var(--muted);
  font-size:.96rem;
  margin:0 0 22px;
  flex:1;
}

/* About / infos */
.about-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:48px;
  align-items:center;
}
.about-grid h2{font-size:1.9rem;font-weight:900;margin:0 0 16px;}
.about-grid p{color:var(--muted);margin:0 0 16px;}
.info-card{
  background:var(--bg-soft);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px;
}
.info-row{
  display:flex;
  gap:14px;
  padding:12px 0;
  border-bottom:1px solid var(--border);
}
.info-row:last-child{border-bottom:none;}
.info-row .label{
  min-width:110px;
  font-weight:800;
  font-size:.85rem;
  color:var(--muted);
  text-transform:uppercase;
  letter-spacing:.03em;
}
.info-row .value{font-weight:600;}

/* Footer */
.site-footer{
  background:var(--ink);
  color:#c9cedb;
  padding:48px 0 24px;
}
.footer-grid{
  display:grid;
  grid-template-columns:1.3fr 1fr 1fr;
  gap:32px;
  margin-bottom:32px;
}
.footer-brand{display:flex;align-items:center;gap:10px;margin-bottom:14px;}
.footer-brand img{height:36px;width:36px;}
.footer-brand span{color:#fff;font-weight:800;font-size:1.05rem;}
.site-footer p{color:#9aa2b4;font-size:.92rem;margin:0;}
.footer-col h4{
  color:#fff;
  font-size:.85rem;
  text-transform:uppercase;
  letter-spacing:.05em;
  margin:0 0 16px;
}
.footer-col a, .footer-col p{
  display:block;
  color:#c9cedb;
  font-size:.92rem;
  margin-bottom:10px;
}
.footer-col a:hover{color:#fff;}
.footer-bottom{
  border-top:1px solid rgba(255,255,255,.1);
  padding-top:20px;
  text-align:center;
  font-size:.82rem;
  color:#828aa0;
}

/* Contact page */
.contact-grid{
  display:grid;
  grid-template-columns:.9fr 1.1fr;
  gap:40px;
  align-items:start;
}
.contact-block{
  background:#fff;
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:32px;
  box-shadow:var(--shadow);
}
.contact-block h3{margin-top:0;font-size:1.2rem;font-weight:900;}
.form-group{margin-bottom:18px;}
.form-group label{
  display:block;
  font-weight:700;
  font-size:.9rem;
  margin-bottom:6px;
}
.form-group input,
.form-group textarea{
  width:100%;
  padding:12px 14px;
  border:1px solid var(--border);
  border-radius:10px;
  font-family:inherit;
  font-size:.95rem;
  background:var(--bg-soft);
}
.form-group textarea{min-height:130px;resize:vertical;}
.form-group input:focus,
.form-group textarea:focus{
  outline:none;
  border-color:var(--blue);
  background:#fff;
}
.form-note{font-size:.82rem;color:var(--muted);margin-top:10px;}

/* Responsive */
@media (max-width:900px){
  .activities{grid-template-columns:1fr;}
  .about-grid{grid-template-columns:1fr;}
  .footer-grid{grid-template-columns:1fr 1fr;}
  .contact-grid{grid-template-columns:1fr;}
}
@media (max-width:680px){
  .main-nav{
    position:fixed;
    top:76px;left:0;right:0;
    background:#fff;
    border-bottom:1px solid var(--border);
    flex-direction:column;
    align-items:flex-start;
    padding:20px 24px;
    gap:16px;
    display:none;
    box-shadow:var(--shadow);
  }
  .main-nav.open{display:flex;}
  .nav-toggle{
    display:inline-flex;
    background:none;
    border:none;
    font-size:1.6rem;
    cursor:pointer;
    color:var(--ink);
  }
  .hero h1{font-size:1.8rem;}
  .footer-grid{grid-template-columns:1fr;}
}