:root{
  --bg:#ffffff;
  --panel:#ffffff;
  --panel-2:#f8f9fb;
  --text:#1a1a1a;
  --muted:#55606e;
  --accent:#0f62fe;
  --accent-2:#0f766e;
  --border:#e5e7eb;
  --code:#f5f7fb;
  --shadow:0 8px 24px rgba(16,24,40,0.06);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:Inter,"Segoe UI",Arial,Helvetica,sans-serif;
  line-height:1.6;
  background:#ffffff;
  color:var(--text);
}
.container{
  max-width:1140px;
  margin:0 auto;
  padding:28px 24px;
}
header{
  background:rgba(255,255,255,.94);
  border-bottom:1px solid var(--border);
  position:sticky;
  top:0;
  backdrop-filter:blur(8px);
  z-index:10;
}
nav{
  display:flex;
  flex-wrap:wrap;
  gap:4px 10px;
  align-items:center;
}
nav a{
  color:#1f2937;
  text-decoration:none;
  display:inline-block;
  padding:8px 10px;
  border-radius:10px;
}
nav a:hover{
  background:var(--panel-2);
  color:#000;
}
.hero,.card{
  background:#ffffff;
  border:1px solid var(--border);
  border-radius:18px;
  padding:26px;
  margin:22px 0;
  box-shadow:var(--shadow);
}
.hero{
  background:linear-gradient(180deg,#ffffff 0%, #fbfcff 100%);
}
h1,h2,h3{line-height:1.22;color:#111827}
h1{margin-top:0;font-size:2.15rem}
h2{
  margin-top:34px;
  border-bottom:1px solid var(--border);
  padding-bottom:10px;
}
h3{
  margin-top:24px;
  color:#0f766e;
}
p,li{color:var(--muted)}
ul{padding-left:22px}
.grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(250px,1fr));
  gap:18px;
}
.tile{
  background:#ffffff;
  border:1px solid var(--border);
  border-radius:16px;
  padding:18px;
  box-shadow:var(--shadow);
}
.tile h3{margin-top:0}
.tile a{
  color:var(--accent);
  text-decoration:none;
  font-weight:700;
}
.tile a:hover{text-decoration:underline}
code{
  background:var(--code);
  padding:2px 6px;
  border-radius:6px;
  color:#0f172a;
  font-family:Consolas,"Courier New",monospace;
}
pre{
  background:var(--code);
  border:1px solid var(--border);
  padding:16px;
  border-radius:14px;
  overflow:auto;
  color:#0f172a;
  line-height:1.55;
}
table{
  width:100%;
  border-collapse:collapse;
  margin:16px 0;
  background:#fff;
  border:1px solid var(--border);
  box-shadow:var(--shadow);
  border-radius:14px;
  overflow:hidden;
}
th,td{
  border:1px solid var(--border);
  padding:10px 12px;
  text-align:left;
  vertical-align:top;
}
th{
  background:#fafbff;
  color:#111827;
}
tr:nth-child(even) td{
  background:#fcfcfd;
}
.footer{
  color:var(--muted);
  font-size:.95rem;
  margin-top:40px;
  padding-top:18px;
  border-top:1px solid var(--border);
}
.small{font-size:.95rem;color:var(--muted)}
.badge{
  display:inline-block;
  background:#f4f8ff;
  color:#1249b8;
  border:1px solid #dbe7ff;
  padding:4px 8px;
  border-radius:999px;
  font-size:.85rem;
  margin-right:8px;
  margin-bottom:6px;
}
@media (max-width: 900px){
  .container{padding:20px 16px}
  h1{font-size:1.8rem}
  .hero,.card{padding:20px}
}