:root{
  --primary:#045db5;
  --secondary:#1d8fe2;
  --accent:#d7ebf6;
  --text:#0f2137;
  --muted:#51606f;
  --bg:#ffffff;
}

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

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

.site-header{position:sticky;top:0;background:#fff;border-bottom:1px solid #eef2f6;z-index:50}
.header-inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:0.8rem 0}
.brand{display:flex;align-items:center;gap:.75rem;text-decoration:none;color:inherit}
.logo{width:48px;height:48px;object-fit:contain}
.brand-name{font-family:Rubik, Inter, sans-serif;font-weight:700;font-size:1.125rem}
.brand-tagline{display:block;font-size:.8rem;color:var(--muted);margin-top:.1rem}
.nav{display:flex;gap:1rem}
.nav a{color:#2a3a4a;text-decoration:none;font-weight:600;padding:.5rem .75rem;border-radius:999px}
.nav a:hover{background:var(--accent)}
.nav-toggle{display:none;border:1px solid #e4e8ee;border-radius:.75rem;background:#fff;padding:.4rem .55rem;font-size:1.1rem}

.hero{background:linear-gradient(180deg, #eaf4fe, #ffffff)}
.hero-inner{display:grid;grid-template-columns:1.2fr .8fr;gap:2rem;align-items:center;padding:3rem 0}
.hero h1{font-family:Rubik, Inter, sans-serif;font-size:2.2rem;line-height:1.2;margin:0 0 .75rem}
.accent-underline{box-shadow:inset 0 -0.35em 0 var(--accent)}
.hero p{color:var(--muted);margin:0 0 1rem}
.hero-cta{display:flex;gap:.75rem;flex-wrap:wrap}
.hero-card{background:#fff;border:1px solid #eef2f6;border-radius:1rem;padding:1.25rem;box-shadow:0 6px 24px rgba(4,93,181,.08)}
.hero-card h3{margin:.2rem 0  .4rem;font-family:Rubik, Inter, sans-serif}

.section{padding:2.5rem 0}
.section-title{font-family:Rubik, Inter, sans-serif;font-size:1.6rem;margin:0 0 .5rem;color:#0f2850}
.section-intro{color:var(--muted);margin:0 0 1.25rem}

.cards-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1rem}
.card{border:1px solid #eef2f6;border-radius:1rem;background:#fff}
.card-body{padding:1rem}
.card.spotlight{background:linear-gradient(180deg,#ffffff,#f7fbff);border-color:#dceaf9}
.card h3,.card h4{margin:.2rem 0 .5rem;font-family:Rubik, Inter, sans-serif}
.checklist{padding-left:1rem;margin:.5rem 0}
.checklist li{margin:.25rem 0}
.tags{display:flex;gap:.5rem;list-style:none;padding:0;margin:.75rem 0 0}
.tags li{border:1px solid #e5eef9;padding:.25rem .5rem;border-radius:999px;font-size:.85rem}

.split{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.highlight{background:linear-gradient(180deg, #f7fbff, #ffffff);border:1px solid #e8f1fb;border-radius:1rem}

.page-hero{padding:2rem 0 1rem}
.page-hero h1{font-family:Rubik, Inter, sans-serif;margin:.5rem 0;font-size:2rem}
.prose p{margin:.7rem 0;color:#2b3746}

.btn{display:inline-block;border-radius:.8rem;padding:.7rem 1rem;font-weight:700;text-decoration:none;border:2px solid transparent}
.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn-primary:hover{background:#034a91;border-color:#034a91}
.btn-outline{border-color:var(--secondary);color:var(--secondary);background:#fff}
.btn-outline:hover{background:var(--accent)}

.note{display:block;color:var(--muted);margin-top:.5rem;font-size:.8rem}

.site-footer{border-top:1px solid #eef2f6;background:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr;gap:2rem;padding:2rem 0}
.footer-title{font-family:Rubik, Inter, sans-serif;font-weight:700;margin-bottom:.4rem}
.footer-links{list-style:none;margin:0;padding:0}
.footer-links li{margin:.35rem 0}
.footer-links a{text-decoration:none;color:#2a3a4a}
.footer-links a:hover{text-decoration:underline}
.footer-bottom{padding:1rem 0;border-top:1px solid #eef2f6;color:var(--muted)}

/* Responsive */
@media (max-width: 900px){
  .hero-inner{grid-template-columns:1fr}
  .cards-grid{grid-template-columns:1fr 1fr}
  .split{flex-direction:column;align-items:flex-start}
}
@media (max-width: 640px){
  .nav{display:none;position:absolute;right:4%;top:64px;background:#fff;border:1px solid #eef2f6;border-radius:.8rem;padding:.5rem;flex-direction:column;min-width:220px;box-shadow:0 10px 30px rgba(15,32,55,.08)}
  .nav-toggle{display:block}
  .cards-grid{grid-template-columns:1fr}
}