:root{
  --bg:#0b0f14; --card:#131a22; --ink:#e8f0ff; --muted:#9db0c9; --accent:#3ddc84; --accent2:#00bcd4; --shadow:rgba(0,0,0,.35);
  --brand:#9b5de5; --brand2:#f15bb5; --brand3:#fee440; --ok:#22c55e; --warn:#f59e0b;
  --radius:20px;
  font-synthesis-weight:none;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font-family:Inter,system-ui,Segoe UI,Roboto,Helvetica,Arial,sans-serif}
a{color:inherit;text-decoration:none}
.container{max-width:1080px;margin:0 auto;padding:20px}
.header{
  position:sticky;top:0;z-index:50;background:linear-gradient(180deg, rgba(11,15,20,.98) 0%, rgba(11,15,20,.85) 80%, rgba(11,15,20,0) 100%);
  backdrop-filter: blur(8px); border-bottom:1px solid #1f2834;
}
.header-inner{display:flex;align-items:center;gap:12px;padding:14px 12px}
.title{font-size:clamp(22px,4vw,30px);font-weight:800;letter-spacing:.2px;display:flex;align-items:center;gap:10px}
.badge{font-size:12px;padding:4px 10px;border:1px solid #243140;border-radius:999px;color:var(--muted)}
.controls{margin-left:auto;display:flex;gap:8px;align-items:center}
.ctrl-btn{padding:8px 10px;border:1px solid #243140;border-radius:12px;background:#0f1520;cursor:pointer}
.ctrl-btn:hover{border-color:#2e3d52}
.lang-toggle{padding:8px 12px;border:1px solid #2d3a4c;border-radius:12px;background:#0f1520;cursor:pointer}
.grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:16px}
@media(min-width:800px){.grid{grid-template-columns:repeat(2,1fr)}}
.card{background:linear-gradient(180deg,#121a25,#101621);border:1px solid #1f2834;border-radius:var(--radius);box-shadow:0 10px 30px var(--shadow);padding:18px}
.card h2,.card h3{margin:0 0 8px}
.tag{display:inline-block;font-size:12px;padding:6px 10px;border:1px dashed #2a394d;border-radius:999px;color:var(--muted);margin-right:8px;margin-top:6px}
.row{display:flex;flex-wrap:wrap;gap:10px;align-items:center}
.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 14px;border-radius:14px;border:1px solid #233246;cursor:pointer;font-weight:700}
.btn-3d{background:linear-gradient(180deg,#172334,#122131);}
.btn-ar{background:linear-gradient(180deg,#123135,#102728);}
.btn:hover{transform:translateY(-1px)}
.section-title{margin:24px 0 8px;font-weight:800;font-size:20px}
.kv{display:grid;grid-template-columns:1fr;gap:8px}
.kv div{background:#0f1622;border:1px solid #1f2834;border-radius:12px;padding:12px}
.footer{margin:24px auto 40px;max-width:1080px;text-align:center;color:var(--muted);font-size:14px}
.footer .credits{opacity:.8}
hr.sep{border:0;border-top:1px solid #1f2834;margin:18px 0}
.hidden{display:none !important}
.model-hero{
  width:100%;aspect-ratio:16/9;border-radius:18px;border:1px solid #1f2834;background:#0a0f16;
  display:grid;place-items:center;color:#7aa2c7
}