:root{
  --bg:#ffffff;
  --text:#0b1f2a;
  --muted:#51616c;
  --primary:#0077B6;
  --secondary:#48CAE4;
  --card:#ffffff;
  --border:rgba(10, 38, 54, 0.10);
  --shadow:0 10px 28px rgba(10, 38, 54, 0.10);
  --shadow-hover:0 14px 34px rgba(10, 38, 54, 0.14);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family:"Poppins", system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background:var(--bg);
  line-height:1.55;
}

a{color:inherit}

.skip-link{
  position:absolute;
  left:12px;
  top:12px;
  padding:10px 12px;
  background:var(--text);
  color:#fff;
  border-radius:10px;
  transform:translateY(-150%);
  transition:transform .2s ease;
  z-index:10;
}
.skip-link:focus{transform:translateY(0)}

.container{
  width:min(1100px, 92vw);
  margin:0 auto;
}

.site-header{
  background:linear-gradient(180deg, rgba(72,202,228,0.16), rgba(72,202,228,0));
  border-bottom:1px solid var(--border);
}

.brand{
  display:flex;
  align-items:center;
  gap:14px;
  padding:28px 0;
}

.brand-mark{
  width:44px;
  height:44px;
  border-radius:14px;
  background:linear-gradient(135deg, rgba(0,119,182,0.18), rgba(72,202,228,0.24));
  border:1px solid rgba(0,119,182,0.18);
  display:grid;
  place-items:center;
}

.brand-dot{
  width:16px;
  height:16px;
  border-radius:999px;
  background:var(--primary);
  box-shadow:0 0 0 6px rgba(72,202,228,0.35);
}

.site-title{
  font-size:clamp(1.15rem, 2.2vw, 1.55rem);
  line-height:1.2;
  margin:0;
  letter-spacing:-0.02em;
}

.site-tagline{
  margin:6px 0 0;
  color:var(--muted);
  font-size:0.98rem;
}

.main{padding:34px 0 54px}

.section-head{
  max-width:720px;
}

.section-head h2{
  margin:0;
  font-size:clamp(1.35rem, 2.6vw, 1.9rem);
  letter-spacing:-0.02em;
}

.section-subtitle{
  margin:10px 0 0;
  color:var(--muted);
}

.grid{
  margin-top:22px;
  display:grid;
  grid-template-columns:1fr;
  gap:16px;
}

.card{
  background:var(--card);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:18px 18px 16px;
  box-shadow:var(--shadow);
  transition:transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.card:focus-within,
.card:hover{
  transform:translateY(-2px);
  box-shadow:var(--shadow-hover);
  border-color:rgba(0,119,182,0.28);
}

.card-icon{
  width:44px;
  height:44px;
  border-radius:14px;
  background:rgba(72,202,228,0.18);
  color:var(--primary);
  display:grid;
  place-items:center;
}

.card-icon svg{width:24px;height:24px}

.card-title{
  margin:12px 0 10px;
  font-size:1.08rem;
  letter-spacing:-0.01em;
}

.card-list{
  margin:0;
  padding-left:18px;
  color:var(--muted);
}

.card-list li{margin:8px 0}

.cta{
  margin-top:26px;
  display:flex;
  justify-content:center;
}

.btn{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  padding:12px 18px;
  border-radius:999px;
  background:var(--primary);
  color:#fff;
  text-decoration:none;
  font-weight:600;
  box-shadow:0 10px 22px rgba(0,119,182,0.22);
  transition:transform .16s ease, box-shadow .16s ease, background-color .16s ease;
  outline:none;
}

.btn:focus-visible{
  box-shadow:0 0 0 4px rgba(72,202,228,0.45), 0 10px 22px rgba(0,119,182,0.22);
}

.btn:hover{
  transform:translateY(-1px);
  background:#0069a2;
  box-shadow:0 14px 28px rgba(0,119,182,0.28);
}

.site-footer{
  border-top:1px solid var(--border);
  padding:22px 0;
  background:linear-gradient(0deg, rgba(72,202,228,0.12), rgba(72,202,228,0));
}

.footer-inner{
  display:grid;
  gap:6px;
  text-align:center;
}

.footer-brand{font-weight:600}
.footer-meta,.footer-copy{color:var(--muted); font-size:0.95rem}

@media (min-width: 860px){
  .grid{grid-template-columns:1fr 1fr; gap:18px}
  .brand{padding:34px 0}
  .main{padding:42px 0 62px}
}

@media (prefers-reduced-motion: reduce){
  *{scroll-behavior:auto}
  .card,.btn,.skip-link{transition:none}
}