:root{
  --bg:#0b0f14;
  --panel:#101821;
  --panel2:#0f1620;
  --card:#111a25;
  --text:#e8eef7;
  --muted:#a8b3c6;
  --line:rgba(255,255,255,.10);
  --accent:#d9b25f;
  --accent2:#3b6bff;
  --ok:#2ecc71;
  --shadow: 0 18px 50px rgba(0,0,0,.55);
  --radius:10px;
  --maxw: 1180px;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;
  background:
    radial-gradient(900px 500px at 20% 20%, rgba(217,178,95,.10), transparent),
    radial-gradient(900px 500px at 80% 30%, rgba(59,107,255,.10), transparent),
    linear-gradient(180deg, #070a0f, #0b0f14 30%, #070a0f);
  color:var(--text);
  font-family: system-ui, -apple-system, Segoe UI, Roboto, Arial, sans-serif;
}

a{color:inherit; text-decoration:none}
img{max-width:100%; display:block}

.container{width:min(var(--maxw), 94vw); margin:0 auto}

.topbar{
  position:sticky; top:0; z-index:50;
  background:rgba(10,14,20,.82);
  backdrop-filter: blur(10px);
  border-bottom:1px solid var(--line);
}
.topbar__row{
  display:flex; align-items:center; justify-content:space-between;
  gap:14px; padding:10px 0;
}
.brand{display:flex; align-items:center; gap:12px}
.brand img{height:44px; width:auto}
.nav{display:flex; align-items:center; gap:10px; flex-wrap:wrap}
.nav a, .nav button{
  font-size:12px; font-weight:800; text-transform:uppercase; letter-spacing:.7px;
  color:rgba(232,238,247,.85);
  background:transparent;
  border:1px solid transparent;
  padding:8px 10px;
  border-radius:12px;
  cursor:pointer;
}
.nav a:hover, .nav button:hover{border-color:var(--line); background:rgba(255,255,255,.03)}
.nav .login{
  border-color: rgba(46, 204, 113, .35);
  background: rgba(46, 204, 113, .08);
  color: rgba(232,238,247,.95);
}
.nav .login:hover{background: rgba(46, 204, 113, .14)}

.drop{position:relative}
.drop__menu{
  position:absolute; top:44px; right:0;
  min-width:210px;
  background:rgba(15,22,32,.98);
  border:1px solid var(--line);
  border-radius:14px;
  box-shadow:var(--shadow);
  padding:8px;
  display:none;
}
.drop.open .drop__menu{display:block}
.drop__menu a{
  display:block; width:100%;
  text-align:left;
  border-radius:12px;
  padding:10px 12px;
  color:rgba(232,238,247,.88);
}
.drop__menu a:hover{background:rgba(255,255,255,.04)}

.page{
  display:grid;
  grid-template-columns: 260px 1fr;
  gap:16px;
  padding:18px 0 30px;
}

.sidebar{display:flex; flex-direction:column; gap:12px}
.panel{
  background:rgba(16,24,33,.78);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow: 0 10px 30px rgba(0,0,0,.30);
  overflow:hidden;
}
.panel__head{
  background:linear-gradient(180deg, rgba(255,255,255,.04), rgba(255,255,255,.00));
  padding:10px 12px;
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:.8px;
  font-size:12px;
  color:rgba(232,238,247,.82);
  border-bottom:1px solid var(--line);
}
.panel__body{padding:10px 12px}
.side-links{display:grid; gap:6px}
.side-links a{
  padding:9px 10px;
  border-radius:12px;
  border:1px solid transparent;
  color:rgba(232,238,247,.85);
  font-weight:700;
  font-size:12px;
}
.side-links a:hover{border-color:var(--line); background:rgba(255,255,255,.03)}
.side-links a.active{border-color:rgba(217,178,95,.25); background:rgba(217,178,95,.08)}

.badge{
  display:inline-flex; align-items:center; gap:8px;
  padding:8px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
  color:rgba(232,238,247,.80);
  font-size:12px;
  font-weight:800;
}

.main{display:flex; flex-direction:column; gap:14px}

.hero{
  position:relative;
  border-radius:var(--radius);
  border:1px solid var(--line);
  overflow:hidden;
  min-height: 280px;
  box-shadow: var(--shadow);
  background:
    linear-gradient(90deg, rgba(11,15,20,.90), rgba(11,15,20,.40)),
    url("../img/rendering_reference.png");
  background-size: cover;
  background-position:center;
}
.hero__inner{position:relative; padding:18px 18px 16px; max-width: 760px}
.kicker{
  color:var(--accent);
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:1.2px;
  font-size:12px;
  margin:0 0 8px;
}
.h1{
  font-size: clamp(28px, 4vw, 44px);
  line-height:1.05;
  margin:0 0 10px;
  font-weight:1000;
}
.sub{
  margin:0 0 14px;
  color:rgba(232,238,247,.80);
  line-height:1.6;
  font-weight:600;
  font-size:13px;
}

.actions{display:flex; gap:10px; flex-wrap:wrap; margin:0 0 12px}
.btn{
  display:inline-flex; align-items:center; justify-content:center;
  gap:8px;
  padding:10px 14px;
  border-radius:12px;
  border:1px solid var(--line);
  font-weight:900;
  text-transform:uppercase;
  letter-spacing:.7px;
  font-size:12px;
}
.btn.primary{
  background:rgba(59,107,255,.16);
  border-color:rgba(59,107,255,.35);
}
.btn.primary:hover{background:rgba(59,107,255,.22)}
.btn.secondary{
  background:rgba(255,255,255,.03);
}
.btn.secondary:hover{background:rgba(255,255,255,.05)}
.tags{display:flex; gap:8px; flex-wrap:wrap}

.grid3{display:grid; grid-template-columns: repeat(3, 1fr); gap:14px}
.card{
  background:rgba(16,24,33,.72);
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
}
.card__head{padding:10px 12px; border-bottom:1px solid var(--line); font-weight:1000; text-transform:uppercase; letter-spacing:.8px; font-size:12px}
.card__body{padding:10px 12px; color:rgba(232,238,247,.80); line-height:1.6; font-size:13px}
.card__body ul{margin:8px 0 0; padding-left:16px}

.stats{display:grid; grid-template-columns: repeat(4,1fr); gap:10px}
.stat{
  text-align:center;
  padding:12px 10px;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(255,255,255,.03);
}
.stat .num{font-size:26px; font-weight:1000; color:var(--accent)}
.stat .lbl{font-size:12px; color:rgba(232,238,247,.70); text-transform:uppercase; letter-spacing:.7px; font-weight:900}

.list{
  border:1px solid var(--line);
  border-radius:var(--radius);
  overflow:hidden;
  background:rgba(16,24,33,.72);
}
.list .row{
  display:flex; justify-content:space-between; gap:12px;
  padding:10px 12px;
  border-top:1px solid var(--line);
}
.list .row:first-child{border-top:0}
.list .title{font-weight:900}
.list .meta{color:rgba(232,238,247,.62); font-size:12px; font-weight:800}

.h2{
  margin:0;
  font-size:18px;
  font-weight:1000;
  text-transform:uppercase;
  letter-spacing:.8px;
}

.footer{
  border-top:1px solid var(--line);
  color:rgba(232,238,247,.65);
  padding:18px 0 26px;
  font-size:12px;
}
.footer__row{display:flex; justify-content:space-between; gap:12px; flex-wrap:wrap}
.small-links{display:flex; gap:12px; flex-wrap:wrap}
.small-links a{color:rgba(232,238,247,.70)}
.small-links a:hover{text-decoration:underline}

.table{
  width:100%;
  border-collapse:separate;
  border-spacing:0;
  overflow:hidden;
  border-radius:var(--radius);
  border:1px solid var(--line);
  background:rgba(16,24,33,.72);
}
.table th, .table td{
  padding:10px 10px;
  border-top:1px solid var(--line);
  text-align:left;
  font-size:12px;
}
.table th{
  border-top:0;
  color:rgba(232,238,247,.75);
  text-transform:uppercase;
  letter-spacing:.7px;
  font-size:12px;
  font-weight:1000;
  background:rgba(255,255,255,.03);
}
.pill{
  display:inline-flex; align-items:center;
  border:1px solid var(--line);
  padding:6px 10px;
  border-radius:999px;
  color:rgba(232,238,247,.72);
  font-weight:900;
  font-size:12px;
  background:rgba(255,255,255,.03);
}
hr.sep{border:0;border-top:1px solid var(--line); margin:10px 0}

@media (max-width: 980px){
  .page{grid-template-columns: 1fr}
  .sidebar{order:2}
  .grid3{grid-template-columns: 1fr}
  .stats{grid-template-columns: repeat(2,1fr)}
  .drop__menu{right:auto; left:0}
}

.newslist{border:1px solid var(--line); border-radius:var(--radius); background:rgba(16,24,33,.72); overflow:hidden}
.newslist a{display:block; padding:10px 12px; font-weight:900; color:rgba(232,238,247,.90)}
.newslist a + a{border-top:1px solid var(--line)}
.newslist a:hover{background:rgba(255,255,255,.04)}
.smalltitle{margin:0 0 8px; font-size:14px; font-weight:1000; text-transform:uppercase; letter-spacing:.8px}
.tabs{display:flex; gap:10px; flex-wrap:wrap; margin:6px 0 10px}
.tab{padding:7px 10px; border-radius:999px; border:1px solid var(--line); background:rgba(255,255,255,.03); font-weight:900; font-size:12px; color:rgba(232,238,247,.78)}
.tab.active{border-color:rgba(217,178,95,.30); background:rgba(217,178,95,.08); color:rgba(232,238,247,.92)}
.tree{margin:0; padding-left:18px; color:rgba(232,238,247,.78)}
.tree li{margin:6px 0}
.tree a{font-weight:900}
.rankcard{border:1px solid var(--line); border-radius:var(--radius); background:rgba(16,24,33,.72); padding:12px}
.rankcard h3{margin:0 0 6px; font-size:14px; font-weight:1000}
.rankmeta{color:rgba(232,238,247,.65); font-size:12px; font-weight:900; text-transform:uppercase; letter-spacing:.7px}
.rankdesc{margin:8px 0 0; color:rgba(232,238,247,.78); line-height:1.6}
.prereq{margin:10px 0 0; padding-left:18px; color:rgba(232,238,247,.78)}
.pagination{display:flex; gap:8px; align-items:center; margin:8px 0 14px}
.pagebtn{width:28px; height:28px; display:grid; place-items:center; border-radius:8px; border:1px solid var(--line); background:rgba(255,255,255,.03); font-weight:1000}
.pagebtn.active{border-color:rgba(217,178,95,.35); background:rgba(217,178,95,.08)}