/* Simple responsive UI/UX focused stylesheet */
:root{
  --bg: #f5f7fb;
  --card: #ffffff;
  --accent: #0b5db7;
  --muted: #666;
  --radius: 12px;
}
*{box-sizing:border-box}
body{
  font-family: Inter, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  margin:0;
  background:var(--bg);
  color:#222;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  line-height:1.5;
}
.container{
  max-width:1100px;
  margin:0 auto;
  padding:20px;
}
.site-header{
  background:linear-gradient(90deg, #ffffff, #eef6ff);
  border-bottom:1px solid rgba(15,40,70,0.06);
  position:sticky;
  top:0;
  z-index:20;
}
.header-inner{
  display:flex;
  gap:16px;
  align-items:center;
  padding:12px 20px;
}
.logo{width:80px;height:80px;object-fit:contain;border-radius:8px;}
.site-title h1{font-size:18px;margin:0 0 6px;}
.site-title .meta{margin:0;color:var(--muted);font-size:13px;}

.btn{
  background:var(--accent);
  color:white;
  border:none;
  padding:8px 12px;
  border-radius:10px;
  cursor:pointer;
  font-weight:600;
}
.btn.ghost{background:transparent;color:var(--accent);border:1px solid var(--accent);}

main.container{
  display:grid;
  grid-template-columns: 1fr 320px;
  gap:20px;
  padding-top:24px;
  align-items:start;
}

.card{
  background:var(--card);
  border-radius:var(--radius);
  box-shadow: 0 6px 22px rgba(15,30,60,0.06);
  padding:18px;
}

.article .hero img{
  width:100%;
  max-height:420px;
  object-fit:cover;
  border-radius:10px;
}
.hero figcaption{font-size:13px;color:var(--muted);margin-top:8px}

/* Article content */
.article h2{color:var(--accent);margin-top:12px}
.article h3{margin-top:18px}
.lede .intro{font-size:16px;color:#1f2937}

.article-footer{
  display:flex;
  justify-content:space-between;
  align-items:center;
  margin-top:18px;
  gap:10px;
}
.tags span{
  display:inline-block;
  background:#eef6ff;
  color:var(--accent);
  padding:6px 8px;border-radius:8px;margin-right:6px;font-weight:600;font-size:13px;
}

/* Sidebar */
.sidebar h4{margin-top:0;}
.sidebar ul{padding-left:18px}
.sidebar a{color:var(--accent);text-decoration:none}

/* Footer */
.site-footer{padding:18px 0;color:var(--muted);font-size:14px;text-align:center;margin-top:28px}

/* Responsive */
@media (max-width:900px){
  main.container{grid-template-columns:1fr; padding:12px}
  .logo{width:64px;height:64px}
}