:root{
  --bg:#0b0c0f;
  --card:#121521;
  --text:#e9edf5;
  --muted:#aeb7c7;
  --line:rgba(255,255,255,.10);
  --shadow:0 16px 40px rgba(0,0,0,.35);
  --radius:18px;
  --max:980px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Cantarell, "Noto Sans", Arial;
  background:
    radial-gradient(900px 500px at 20% -10%, rgba(255,255,255,.10), transparent 60%),
    radial-gradient(800px 500px at 90% 0%, rgba(255,255,255,.06), transparent 60%),
    var(--bg);
  color:var(--text);
  line-height:1.6;
}

a{color:inherit}
.container{max-width:var(--max); margin:0 auto; padding:28px 18px 60px;}
.card{
  background: linear-gradient(180deg, rgba(255,255,255,.06), rgba(255,255,255,.03));
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:22px;
}

h1{margin:0 0 10px; font-size:clamp(26px, 3vw, 40px); line-height:1.15}
h2{margin:18px 0 8px; font-size:1.15rem}
p{margin:10px 0}
.small{font-size:.92rem; color:var(--muted)}
hr{border:0; border-top:1px solid var(--line); margin:18px 0}

.topbar{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; margin-bottom:14px;
}
.brand{
  display:flex; align-items:center; gap:10px;
  text-decoration:none;
}
.mark{
  width:34px; height:34px; border-radius:12px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.06);
  display:grid; place-items:center;
  font-weight:800;
}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  padding:9px 12px;
  border-radius:14px;
  border:1px solid rgba(255,255,255,.14);
  background:rgba(255,255,255,.06);
  text-decoration:none;
}
.btn:hover{filter:brightness(1.05)}
.list{margin:0; padding-left:18px; color:var(--muted)}