:root{
  --navy:#0F172A;
  --blue:#2563EB;
  --bg:#F8FAFC;
  --text:#334155;
  --white:#fff;
  --border:#E2E8F0;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  font-family:Arial,Helvetica,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
}
.container{
  width:min(1140px,92%);
  margin:auto;
}
.navbar{
  position:sticky;
  top:0;
  background:#fff;
  border-bottom:1px solid var(--border);
  z-index:1000;
}
.nav{
  display:flex;
  justify-content:space-between;
  align-items:center;
  padding:18px 0;
}
.logo{
  text-decoration:none;
  color:var(--navy);
  font-size:1.6rem;
  font-weight:bold;
}
.logo span{color:var(--blue)}
nav{
  display:flex;
  gap:24px;
}
nav a{
  text-decoration:none;
  color:var(--text);
  font-weight:600;
}
nav a:hover{color:var(--blue)}

.hero{
  padding:90px 0;
}
.hero-grid{
  display:grid;
  grid-template-columns:2fr 1fr;
  gap:60px;
  align-items:center;
}
.hero-tag{
  color:var(--blue);
  font-weight:bold;
  letter-spacing:2px;
  margin-bottom:15px;
}
.hero h1{
  font-size:3rem;
  color:var(--navy);
  line-height:1.15;
  margin-bottom:20px;
}
.hero h2{
  color:var(--blue);
  margin-bottom:20px;
}
.hero-summary{
  max-width:720px;
  margin-bottom:30px;
}
.hero-buttons{
  display:flex;
  gap:15px;
}
.btn{
  display:inline-block;
  background:var(--blue);
  color:#fff;
  text-decoration:none;
  padding:12px 22px;
  border-radius:8px;
}
.btn-outline{
  background:#fff;
  color:var(--blue);
  border:2px solid var(--blue);
}
.photo-placeholder{
  width:300px;
  height:300px;
  border-radius:50%;
  background:#dbeafe;
  display:flex;
  align-items:center;
  justify-content:center;
  text-align:center;
  font-weight:bold;
  color:#475569;
  margin:auto;
}

.highlights{
  padding:70px 0;
}
.highlights h2,
.about h2,
.expertise h2,
#experience h2,
#certifications h2,
#contact h2{
  text-align:center;
  color:var(--navy);
  margin-bottom:40px;
}
.highlights-grid,
.expertise-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(220px,1fr));
  gap:22px;
}
.highlight-card,
.expertise-card{
  background:#fff;
  border-radius:14px;
  padding:28px;
  text-align:center;
  box-shadow:0 8px 20px rgba(0,0,0,.08);
}
.highlight-card h3{
  color:var(--blue);
  font-size:2.5rem;
  margin-bottom:10px;
}
.about,.expertise,#experience,#certifications,#contact{
  padding:70px 0;
}
.expertise{
  background:#eef4ff;
}
footer{
  background:var(--navy);
  color:#fff;
  text-align:center;
  padding:25px 0;
  margin-top:40px;
}
@media(max-width:900px){
.hero-grid{
grid-template-columns:1fr;
text-align:center;
}
.hero-buttons{
justify-content:center;
flex-wrap:wrap;
}
nav{
display:none;
}
}