:root{
  --bg:#0b0d12;
  --card:#111522;
  --text:#e9ecf1;
  --muted:#a7b0c0;
  --border:rgba(255,255,255,.08);
  --shadow: 0 10px 30px rgba(0,0,0,.35);
  --radius:16px;
}

*{box-sizing:border-box}
html,body{height:100%}

body{
  margin:0;
  min-height:100vh;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
  color:var(--text);
  background: var(--bg); /* базовый фон без “плитки” */
  overflow-x:hidden;
}

/* ЕДИНЫЙ фон одним слоем (не дублируется, не “блоками”) */
body::before{
  content:"";
  position:fixed;
  inset:0;
  z-index:-1;
  pointer-events:none;

  background:
    radial-gradient(1200px 600px at 10% 0%, rgba(120,160,255,.14), transparent 60%),
    radial-gradient(900px 500px at 90% 10%, rgba(120,255,200,.10), transparent 55%),
    var(--bg);

  background-repeat:no-repeat;
  background-size:cover;
  transform: translateZ(0);
}

a{color:inherit; text-decoration:none}
.container{max-width:980px; margin:0 auto; padding:28px 18px}

.top{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:14px;
  padding:14px 0 22px;
}

.brand{display:flex; flex-direction:column; gap:2px}
.brand strong{font-size:18px}
.brand span{font-size:13px; color:var(--muted)}

.card{
  background: rgba(17,21,34,.72);
  border:1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: var(--radius);
  padding: 22px;
  backdrop-filter: blur(8px);
}

.hero{display:flex; flex-direction:column; gap:14px; padding:26px}
.hero h1{margin:0; font-size:28px}
.hero p{margin:0; color:var(--muted); line-height:1.55}

.grid{display:grid; grid-template-columns:repeat(2, minmax(0,1fr)); gap:12px; margin-top:14px}

.btn{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:10px;
  padding:14px 16px;
  border-radius:14px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
  transition: transform .08s ease, background .15s ease, border-color .15s ease;
}
.btn:hover{
  transform: translateY(-1px);
  background: rgba(255,255,255,.06);
  border-color: rgba(255,255,255,.14);
}
.btn span{color:var(--muted); font-size:13px}

.doc h1{margin:0 0 6px; font-size:26px}
.doc .meta{color:var(--muted); font-size:13px; margin-bottom:18px}
.doc .content{line-height:1.65; color:#dbe1ea}
.doc .content h2{margin:22px 0 8px; font-size:18px}
.doc .content p{margin:0 0 12px}
.doc .content ul{margin:0 0 12px 18px}
.doc .content ol{margin:0 0 12px 18px}

.navrow{display:flex; justify-content:space-between; align-items:center; gap:10px; margin-top:18px}

.pill{
  display:inline-flex;
  align-items:center;
  gap:8px;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid var(--border);
  background: rgba(255,255,255,.03);
}

.footer{padding:18px 0; color:var(--muted); font-size:12px; text-align:center}

@media (max-width:720px){
  .grid{grid-template-columns:1fr}
  .hero h1{font-size:24px}
}