:root{
  --bg:#f7f8fb;
  --card:#ffffff;
  --accent:#2b6cb0;
  --text:#1f2937;
  --muted:#6b7280;
  --radius:10px;
  --container-width:1000px;
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--text);
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}

.container{
  width:90%;
  max-width:var(--container-width);
  margin:0 auto;
  padding:2rem 0;
}

.site-header{
  background:linear-gradient(90deg, #ffffffcc, #ffffffcc);
  border-bottom:1px solid #e6e9ef;
  position:sticky;
  top:0;
  z-index:10;
}
.site-header .container{
  display:flex;
  align-items:center;
  gap:1rem;
}
.logo{margin:0;font-size:1.25rem}
.site-nav{margin-left:auto;display:flex;gap:1rem}
.site-nav a{color:var(--text);text-decoration:none;font-weight:500}
.nav-toggle{display:none;background:none;border:0;font-size:1.25rem}

.hero{
  background:linear-gradient(135deg,#e6f0ff,#f8fafc);
  padding:4rem 0;
  border-bottom:1px solid #e6e9ef;
  text-align:center;
}
.hero h2{margin:0 0 .5rem;font-size:2rem}
.hero p{margin:0 0 1rem;color:var(--muted)}
.btn{
  display:inline-block;
  background:var(--accent);
  color:white;
  padding:.6rem 1rem;
  border-radius:8px;
  text-decoration:none;
  border:0;
  cursor:pointer;
}

.card{background:var(--card);border-radius:var(--radius);box-shadow:0 6px 18px rgba(31,41,55,0.06);padding:1.25rem;margin-top:1.25rem}
.projects-list{margin:0;padding-left:1.25rem}
.site-footer{padding:1rem 0;color:var(--muted);text-align:center;margin-top:1.5rem}

form label{display:block;margin-bottom:.75rem}
input[type="text"],input[type="email"],textarea{
  width:100%;padding:.6rem;border:1px solid #e6e9ef;border-radius:8px;margin-top:.25rem;
}
.form-status{margin-top:.75rem;color:var(--muted)}

/* Responsive */
@media (max-width:720px){
  .site-nav{position:absolute;right:1rem;top:64px;background:var(--card);flex-direction:column;padding:.5rem;border-radius:8px;display:none}
  .site-nav.show{display:flex}
  .nav-toggle{display:block;margin-left:auto}
  .hero h2{font-size:1.5rem}
}