:root{
  --bg:#0b1020;
  --panel:#121a31;
  --text:#e9ecff;
  --muted:#aab2dd;
  --line:rgba(255,255,255,.12);
  --accent:#7dd3fc;
  --max:1100px;
}

html,body{height:100%}
body{margin:0;background:linear-gradient(180deg,var(--bg),#070a14);color:var(--text);font:16px/1.6 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
a{color:inherit}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.skip{position:absolute;left:-999px;top:8px;background:var(--panel);border:1px solid var(--line);padding:.5rem .75rem;border-radius:.5rem}
.skip:focus{left:8px;z-index:50}

.shell{max-width:var(--max);margin:0 auto;padding:18px}
.site-header{display:flex;gap:16px;align-items:flex-start;justify-content:space-between;padding:14px 14px 10px;border:1px solid var(--line);border-radius:14px;background:rgba(18,26,49,.85);backdrop-filter:blur(8px)}
.brand{display:flex;flex-direction:column;gap:6px}
#logo a{text-decoration:none;font-weight:800;letter-spacing:.3px;font-size:20px}
.tagline{color:var(--muted)}
.header-ads{min-width:220px;max-width:360px}

.site-nav{margin:14px 0}
.nav-list{list-style:none;margin:0;padding:10px 12px;display:flex;flex-wrap:wrap;gap:10px;border:1px solid var(--line);border-radius:999px;background:rgba(18,26,49,.55)}
.nav-item a{display:block;text-decoration:none;padding:8px 12px;border-radius:999px;border:1px solid transparent}
.nav-item.is-active a{border-color:rgba(125,211,252,.55);box-shadow:0 0 0 3px rgba(125,211,252,.12) inset}

.grid{display:grid;grid-template-columns:1fr 320px;gap:14px;align-items:start}
.site-main,.site-aside{border:1px solid var(--line);border-radius:14px;background:rgba(18,26,49,.55)}
.site-main{padding:18px;min-height:40vh}
.site-aside{padding:14px}
.aside-card{border:1px dashed rgba(255,255,255,.14);border-radius:12px;padding:12px;color:var(--muted)}

.site-footer{margin-top:14px;border:1px solid var(--line);border-radius:14px;background:rgba(18,26,49,.45);padding:14px;display:flex;gap:12px;align-items:center;justify-content:space-between}
.social{display:flex;gap:10px;flex-wrap:wrap}
.social-link{text-decoration:none;border:1px solid var(--line);border-radius:999px;padding:6px 10px;color:var(--muted)}

@media (max-width: 880px){
  .grid{grid-template-columns:1fr}
  .header-ads{display:none}
}