:root{
  --bg:#0b1220;
  --card:#0f1a33;
  --muted:#9fb1d1;
  --text:#e8eefc;
  --primary:#4f8cff;
  --primary2:#2ad4a2;
  --danger:#ff5577;
  --line:#1d2b4d;
}
*{box-sizing:border-box}
body{
  margin:0;
  font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;
  background:linear-gradient(120deg,var(--bg),#071022);
  color:var(--text);
}
.container{max-width:1100px;margin:0 auto;padding:20px}
.topbar{
  position:sticky;top:0;z-index:10;
  background:rgba(7,16,34,.8);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__inner{display:flex;align-items:center;justify-content:space-between;gap:20px}
.brand{color:var(--text);text-decoration:none;font-weight:700}
.nav{display:flex;gap:14px;align-items:center;flex-wrap:wrap}
.nav a{color:var(--muted);text-decoration:none}
.nav a:hover{color:var(--text)}
.inline{display:inline}
.linklike{
  background:none;border:none;color:var(--muted);cursor:pointer;padding:0;
  font:inherit
}
.linklike:hover{color:var(--text)}
.card{
  background:rgba(15,26,51,.9);
  border:1px solid var(--line);
  border-radius:14px;
  padding:18px;
  box-shadow:0 12px 30px rgba(0,0,0,.25);
}
.card--narrow{max-width:520px;margin:30px auto}
h1{margin:0 0 10px 0;font-size:28px}
p{color:var(--muted);line-height:1.55}
.grid{display:flex;gap:12px;flex-wrap:wrap;margin-top:14px}
.btn{
  display:inline-block;
  background:linear-gradient(135deg,var(--primary),#2a6dff);
  color:white;text-decoration:none;
  border:none;border-radius:12px;
  padding:10px 14px;
  font-weight:600;
  cursor:pointer;
}
.btn--secondary{
  background:linear-gradient(135deg,var(--primary2),#17b98a);
  color:#072017;
}
.form{display:flex;flex-direction:column;gap:12px;margin-top:12px}
label span{display:block;color:var(--muted);font-size:14px;margin-bottom:6px}
input,select,textarea{
  width:100%;
  background:#0b1632;
  border:1px solid var(--line);
  color:var(--text);
  border-radius:12px;
  padding:10px 12px;
  outline:none;
}
input:focus,select:focus,textarea:focus{border-color:#2a6dff}
.alert{padding:10px 12px;border-radius:12px;border:1px solid var(--line);background:#0b1632;color:var(--text)}
.alert--error{border-color:rgba(255,85,119,.5);background:rgba(255,85,119,.08)}
.muted{color:var(--muted);font-size:13px}
.footer{border-top:1px solid var(--line);margin-top:40px;color:var(--muted)}
.code{background:#08122a;border:1px solid var(--line);padding:12px;border-radius:12px;overflow:auto}
table{width:100%;border-collapse:collapse;margin-top:12px}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left;vertical-align:top}
th{color:var(--muted);font-weight:600}
.badge{display:inline-block;padding:2px 10px;border-radius:999px;border:1px solid var(--line);color:var(--muted);font-size:12px}
.row{display:flex;gap:12px;flex-wrap:wrap}
.col{flex:1;min-width:240px}