*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0b0f1a; --panel:#11162a; --card1:#12172b; --card2:#1a1f35;
  --text:#e6e6e6; --muted:rgba(230,230,230,.75);
  --accent:#9cc9ff; --blue:#2e4fe4; --pink:#bd26b0; --border:#222;
}
body{
  font-family: Arial, sans-serif;
  background:var(--bg); color:var(--text); line-height:1.8;
}
body.reader-mode{
  background:#f6f6f6; color:#121212;
}
a{color:var(--accent); text-decoration:none}
a:hover{opacity:.9}

header{
  padding:18px 20px; background:var(--panel);
  border-bottom:1px solid var(--border);
}
.topbar{
  display:flex; gap:12px; align-items:center; justify-content:space-between; flex-wrap:wrap;
}
.brand{display:flex; align-items:center; gap:10px}
.logo{
  font-family:'Orbitron',sans-serif;
  letter-spacing:4px; font-size:2.2rem; color:var(--accent);
}
.subtitle{opacity:.85; margin-top:4px}
.nav{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
}
.nav a{
  padding:8px 10px; border:1px solid #2a2f45; border-radius:10px;
  background:rgba(255,255,255,0.03);
}
.nav a.active{border-color:var(--accent)}

.controls{
  margin-top:14px;
  display:flex; flex-wrap:wrap; gap:10px; align-items:center;
}
.controls input,
.controls select,
.controls button{
  padding:10px 12px;
  border-radius:10px;
  border:1px solid #444;
  background:rgba(0,0,0,.18);
  color:inherit;
}
.controls button{cursor:pointer}
.pills{display:flex; gap:8px; flex-wrap:wrap}
.pill{
  cursor:pointer;
  border:1px solid #3a3f57;
  background:rgba(255,255,255,.04);
  padding:8px 10px; border-radius:999px;
  font-size:.9rem;
}
.pill.active{border-color:var(--accent)}

main{
  padding:24px;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(280px, 1fr));
  gap:18px;
}

.card{
  background:linear-gradient(145deg,var(--card1),var(--card2));
  border-radius:16px;
  overflow:hidden;
  border-left:6px solid;
  transition:transform .2s, box-shadow .2s;
  box-shadow:0 6px 16px rgba(0,0,0,.35);
  position:relative;
}
.card:hover{transform:translateY(-4px); box-shadow:0 10px 24px rgba(0,0,0,.45)}
.card.verified{border-color:var(--blue)}
.card.theoretical{border-color:var(--pink)}

.card-img{
  width:100%; height:155px; object-fit:cover; display:block;
  filter:saturate(1.05);
}
.card-body{padding:16px}
.card h2{font-size:1.15rem; margin-bottom:10px}
.card p{opacity:.85; font-size:.98rem}

.badges{display:flex; gap:8px; flex-wrap:wrap; margin-bottom:10px; align-items:center}
.tag{
  display:inline-block; font-size:.78rem; padding:3px 10px;
  border-radius:999px; color:white;
}
.tag.verified{background:var(--blue)}
.tag.theoretical{background:var(--pink)}
.meta{
  font-size:.82rem; opacity:.8;
}
.kbd{
  font-size:.78rem; border:1px solid #444; border-bottom-width:2px;
  padding:2px 6px; border-radius:6px; opacity:.9;
}

.card-actions{
  display:flex; gap:10px; align-items:center; justify-content:space-between;
  margin-top:12px;
}
.read-more{
  padding:8px 10px; border-radius:10px; border:1px solid #555;
  background:rgba(156,201,255,.06);
}
.icon-btn{
  cursor:pointer;
  border:1px solid #555;
  background:rgba(255,255,255,.05);
  padding:7px 10px; border-radius:10px;
  font-size:.95rem;
}

.article-page{
  max-width:980px; margin:20px auto; padding:22px;
  background:linear-gradient(to bottom,var(--card1),var(--card2));
  border-radius:16px;
  box-shadow:0 8px 24px rgba(0,0,0,.45);
}
body.reader-mode .article-page{
  background:white; box-shadow:0 6px 18px rgba(0,0,0,.12);
}
.article-hero{
  display:flex; flex-direction:column; gap:10px; margin-bottom:14px;
}
.article-hero h1{font-size:2rem; color:#4da3ff}
.article-toolbar{
  display:flex; gap:10px; flex-wrap:wrap; align-items:center;
}
.article-toolbar button{
  padding:9px 12px; border-radius:10px; border:1px solid #555;
  background:rgba(255,255,255,.05); color:inherit; cursor:pointer;
}
.article-meta{opacity:.85; font-size:.92rem}

.article-page h2{
  margin-top:22px; border-right:5px solid #4da3ff;
  padding-right:10px; font-size:1.35rem;
}
.article-page p{margin:10px 0}
.article-page img{max-width:100%; border-radius:10px; margin:14px 0}

.section-title{
  margin:20px 0 10px; font-size:1.1rem; opacity:.95;
}
.related{
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(220px, 1fr));
  gap:12px;
}
.related .mini{
  border:1px solid #2f344b;
  border-radius:14px;
  padding:12px;
  background:rgba(255,255,255,.03);
}

.footer{
  text-align:center; padding:18px; opacity:.7;
  border-top:1px solid var(--border);
}

#toTop{
  position:fixed;
  left:16px; bottom:16px;
  padding:10px 12px;
  border-radius:999px;
  border:1px solid #555;
  background:rgba(0,0,0,.35);
  color:inherit;
  cursor:pointer;
  display:none;
}
body.reader-mode #toTop{background:rgba(255,255,255,.9)}