:root{
  --bg:#fefefe;
  --surface:#ffffff;
  --surface-soft:#f4f8ff;
  --text:#1b2733;
  --accent:#1e66b3;
  --muted:#5f6f82;
  --border:#dfe8f4;
}

*{box-sizing:border-box}
html{
  scrollbar-gutter:stable;
  overflow-y:scroll;
  background-color:var(--bg);
  color-scheme:light;
}
body{
  font-family:"Segoe UI",Tahoma,Verdana,sans-serif;
  background-color:var(--bg);
  background:linear-gradient(180deg,#f8fbff 0%,#ffffff 280px);
  color:var(--text);
  margin:0;
  line-height:1.55;
}

@media (prefers-color-scheme: dark){
  html{background-color:var(--bg);color-scheme:light}
  body{background-color:var(--bg);color:var(--text)}
}

.container{max-width:1000px;margin:0 auto;padding:1.25rem 1.5rem}

.site-header{background:var(--surface);border-bottom:1px solid var(--border)}
.site-header .container{display:flex;align-items:center;justify-content:center}
.site-header nav{display:flex;gap:1.25rem;flex-wrap:wrap;justify-content:center}
.site-header nav a{
  color:var(--muted);
  text-decoration:none;
  font-weight:600;
  padding:0.3rem 0;
}
.site-header nav a:hover{color:var(--accent)}

.hero{
  background:linear-gradient(145deg,rgba(30,102,179,0.11),rgba(30,102,179,0.04));
  padding:2rem;
  border:1px solid var(--border);
  border-radius:14px;
}
.hero-img{width:min(420px,100%);height:auto;display:block;margin:0 auto 1.25rem;border-radius:10px}
.hero h1,.hero h2{margin:0 0 0.75rem 0;color:#163c63;line-height:1.2}

.btn{display:inline-block;background:var(--accent);color:#fff;padding:0.5rem 1rem;border-radius:6px;text-decoration:none}

.features{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:1rem;margin-top:1.5rem}
.feature{background:var(--surface);padding:1rem;border-radius:10px;border:1px solid var(--border)}

.site-footer{padding:1rem 0;text-align:center;color:var(--muted);margin-top:2rem;border-top:1px solid var(--border)}
.site-footer .container{position:relative;min-height:38px}
.sitelock-badge{position:absolute;right:1.5rem;top:50%;transform:translateY(-50%)}

@media (max-width: 900px){
  .features{grid-template-columns:repeat(2,minmax(0,1fr))}
}

@media (max-width: 640px){
  .container{padding:1rem}
  .hero{padding:1.25rem}
  .hero h1,.hero h2{font-size:1.5rem}
  .features{grid-template-columns:1fr}

  .site-footer .container{display:flex;flex-direction:column;align-items:center;gap:0.55rem;min-height:0}
  .sitelock-badge{position:static;transform:none}
}