:root{
  --bg:#0d0f12; --panel:#11151b; --fg:#e9eef4; --muted:#9aa4b2;
  --line:#232935; --accent:#6aa6ff; --accent2:#9b8cff;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);font:16px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto,Arial}
a{color:var(--fg);text-decoration:none}
.qn-header{position:sticky;top:0;background:var(--panel);border-bottom:1px solid var(--line);padding:12px 20px;display:flex;align-items:center;gap:18px;z-index:10}
.qn-brand{display:flex;flex-direction:column}
.qn-title{font-weight:700;letter-spacing:.2px}
.qn-sub{color:var(--muted);font-style:normal}
.qn-nav{margin-left:auto;display:flex;gap:10px;flex-wrap:wrap}
.qn-nav a{padding:6px 10px;border-radius:10px;border:1px solid transparent}
.qn-nav a.active{border-color:var(--line);background:#0e1318}
.qn-nav a.soon{opacity:.7;cursor:not-allowed}
.qn-login{border:1px solid var(--line)}
.qn-main{max-width:1100px;margin:0 auto;padding:28px 20px 64px}
.qn-hero{display:grid;grid-template-columns:1.2fr .8fr;gap:16px;align-items:stretch}
.qn-hero h1{margin:0 0 8px 0;font-size:2.1rem}
.qn-k{margin:0 0 12px 0}
.qn-actions{display:flex;gap:10px;margin-top:6px}
.qn-btn{display:inline-block;border:1px solid var(--line);padding:9px 14px;border-radius:12px;background:transparent;color:var(--fg)}
.qn-btn:hover{border-color:var(--accent)}
.qn-btn.qn-ghost{background:transparent;opacity:.85}
.qn-disabled{opacity:.65;cursor:not-allowed}
.qn-card{background:var(--panel);border:1px solid var(--line);border-radius:16px;padding:18px}
.qn-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;margin-top:24px}
.qn-tracks{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:8px}
.qn-footer{border-top:1px solid var(--line);padding:14px 20px;text-align:center;color:var(--muted)}
/* Overlay */
.qn-overlay{position:fixed;inset:0;background:rgba(0,0,0,.55);display:none;align-items:center;justify-content:center;padding:20px}
.qn-overlay.show{display:flex}
.qn-sheet{background:var(--panel);border:1px solid var(--line);border-radius:16px;max-width:560px;width:100%;padding:20px;position:relative}
.qn-ribbon{position:absolute;top:12px;right:-10px;background:linear-gradient(90deg,var(--accent),var(--accent2));color:#000;padding:6px 12px;border-radius:10px;transform:rotate(8deg);font-weight:700}
@media (max-width:900px){.qn-hero{grid-template-columns:1fr}}

/* --- additions: nav buttons & focus outlines --- */
.qn-nav button{
  padding:6px 10px;border-radius:10px;border:1px solid transparent;
  background:transparent;color:inherit;font:inherit;
  cursor:not-allowed;opacity:.7
}
.qn-nav button.active{cursor:default;opacity:1;border-color:var(--line);background:#0e1318}
.qn-nav a:focus, .qn-nav button:focus, .qn-btn:focus{
  outline:2px solid var(--accent); outline-offset:2px
}

/* focus outlines for keyboard users */
.qn-nav a:focus, .qn-nav button:focus, .qn-btn:focus {
  outline:2px solid var(--accent);
  outline-offset:2px;
}

/* focus outlines */
.qn-nav a:focus, .qn-nav button:focus, .qn-btn:focus { outline:2px solid var(--accent); outline-offset:2px; }

/* respect reduced motion */
@media (prefers-reduced-motion: reduce){
  * { animation: none !important; transition: none !important; }
}