:root{
  --bg:#0b1220;
  --panel:#111a2b;
  --panel-2:#162238;
  --text:#e8eef8;
  --muted:#9fb0c8;
  --line:#263752;
  --accent:#38bdf8;
  --accent-2:#22c55e;
  --code:#08101d;
  --max:1240px;
}

*{box-sizing:border-box}

html{
  scroll-behavior:smooth;
}

body{
  margin:0;
  font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.7;
}

a{
  color:var(--accent);
  text-decoration:none;
}

a:hover{
  text-decoration:underline;
}

header{
  position:sticky;
  top:0;
  z-index:50;
  background:rgba(11,18,32,.92);
  backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line);
}

.topbar{
  max-width:var(--max);
  margin:auto;
  padding:14px 24px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-weight:800;
  font-size:1.1rem;
}

.logo{
  width:36px;
  height:36px;
  border-radius:10px;
  display:grid;
  place-items:center;
  background:linear-gradient(135deg,var(--accent),#2563eb);
  color:white;
  font-weight:900;
}

.nav{
  display:flex;
  gap:18px;
  flex-wrap:wrap;
}

.nav a{
  color:var(--muted);
  font-size:.95rem;
}

.hero{
  max-width:var(--max);
  margin:auto;
  padding:90px 24px 70px;
}

.hero h1{
  margin:0 0 18px;
  max-width:850px;
  font-size:clamp(2.5rem,6vw,5rem);
  line-height:1.04;
}

.hero p{
  max-width:780px;
  color:var(--muted);
  font-size:1.15rem;
}

.badge{
  display:inline-block;
  border:1px solid var(--line);
  color:var(--accent);
  border-radius:999px;
  padding:6px 12px;
  margin-bottom:20px;
  font-size:.85rem;
  background:rgba(56,189,248,.06);
}

.actions{
  display:flex;
  flex-wrap:wrap;
  gap:12px;
  margin-top:30px;
}

.btn{
  display:inline-block;
  padding:11px 18px;
  border-radius:10px;
  border:1px solid var(--line);
  font-weight:700;
}

.btn.primary{
  background:var(--accent);
  color:#04111c;
  border-color:var(--accent);
}

main{
  max-width:var(--max);
  margin:auto;
  padding:0 24px 80px;
}

.section{
  margin-top:45px;
}

.section h2{
  font-size:2rem;
  margin-bottom:10px;
}

.section-intro{
  color:var(--muted);
  max-width:800px;
}

.grid{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:18px;
  margin-top:28px;
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:16px;
  padding:22px;
  transition:.2s ease;
}

.card:hover{
  transform:translateY(-3px);
  border-color:#3f5c82;
}

.card h3{
  margin-top:0;
  margin-bottom:8px;
}

.card p{
  color:var(--muted);
  margin-bottom:0;
}

.flow{
  margin-top:30px;
  padding:30px;
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:18px;
  overflow:auto;
}

.flow-row{
  min-width:800px;
  display:flex;
  justify-content:center;
  align-items:center;
  gap:14px;
  flex-wrap:nowrap;
}

.node{
  min-width:140px;
  text-align:center;
  background:var(--panel-2);
  border:1px solid var(--line);
  padding:16px;
  border-radius:14px;
  font-weight:700;
}

.node small{
  display:block;
  font-weight:400;
  color:var(--muted);
  margin-top:5px;
}

.arrow{
  color:var(--accent);
  font-size:1.6rem;
  font-weight:900;
}

.quote{
  margin-top:35px;
  border-left:4px solid var(--accent);
  padding:18px 22px;
  background:var(--panel);
  border-radius:0 12px 12px 0;
  font-size:1.08rem;
}

footer{
  border-top:1px solid var(--line);
  color:var(--muted);
}

.footer-inner{
  max-width:var(--max);
  margin:auto;
  padding:30px 24px;
}

.arch-layout{
  max-width:var(--max);
  margin:auto;
  padding:40px 24px 80px;
  display:grid;
  grid-template-columns:250px 1fr;
  gap:42px;
}

.sidebar{
  position:sticky;
  top:90px;
  height:max-content;
  border-right:1px solid var(--line);
  padding-right:25px;
}

.sidebar a{
  display:block;
  padding:8px 0;
  color:var(--muted);
  font-size:.92rem;
}

.content{
  min-width:0;
}

.content h1{
  font-size:clamp(2.2rem,5vw,3.8rem);
  line-height:1.08;
}

.content h2{
  margin-top:55px;
  padding-top:10px;
  border-top:1px solid var(--line);
}

.content h3{
  margin-top:30px;
}

.content p,
.content li{
  color:#c7d3e5;
}

pre{
  background:var(--code);
  border:1px solid var(--line);
  padding:20px;
  border-radius:14px;
  overflow:auto;
  color:#c5e7ff;
}

table{
  width:100%;
  border-collapse:collapse;
  margin:25px 0;
}

th,td{
  padding:14px;
  border-bottom:1px solid var(--line);
  text-align:left;
}

th{
  color:white;
}

td{
  color:var(--muted);
}

@media(max-width:850px){
  .grid{
    grid-template-columns:1fr;
  }

  .arch-layout{
    grid-template-columns:1fr;
  }

  .sidebar{
    position:static;
    border-right:0;
    border-bottom:1px solid var(--line);
    padding:0 0 20px;
  }

  .nav{
    display:none;
  }

  .hero{
    padding-top:60px;
  }
}