:root{
  --bg:#07111d;--panel:#101b29;--panel2:#132438;--text:#edf3fb;--muted:#9cb0c6;--gold:#c99a36;--gold2:#e0b24d;--border:rgba(255,255,255,.1);--danger:#ff6b6b;--ok:#59d68d;
}
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/* Document pages imported from the static Aero Bureau manual */
.paper{margin:40px auto;max-width:980px;line-height:1.7;background:linear-gradient(145deg,rgba(19,36,56,.94),rgba(9,17,28,.94));border:1px solid var(--border);box-shadow:0 24px 80px rgba(0,0,0,.35);border-radius:24px;padding:30px}.paper h1{font-size:clamp(2.1rem,4vw,4.4rem);line-height:1;margin:0 0 12px}.paper h2{margin-top:34px;color:var(--gold2)}.paper h3{margin-top:24px;color:#dbe8f7}.paper p{line-height:1.7}.paper ul,.paper ol{color:var(--muted);line-height:1.75}.paper li{margin:6px 0}.note,.callout,.warning{border-left:4px solid var(--gold2);padding:14px 16px;background:rgba(224,178,77,.08);color:var(--text);border-radius:12px;margin:16px 0}.warning{border-left-color:var(--danger);background:rgba(255,107,107,.09)}.callout{border-left-color:#6fb6ff;background:rgba(111,182,255,.09)}.paper table{width:100%;border-collapse:collapse;margin:18px 0;border:1px solid var(--border);border-radius:14px;overflow:hidden}.paper th,.paper td{border-bottom:1px solid var(--border);padding:12px;text-align:left;vertical-align:top}.paper th{color:var(--gold2);background:rgba(255,255,255,.04)}.question-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:18px}.q-card{background:rgba(255,255,255,.04);border:1px solid var(--border);border-radius:18px;padding:18px}.q-card h3{margin-top:0;color:var(--gold2)}details{margin-top:10px}summary{cursor:pointer;color:#cfe0f4;font-weight:800}.instructor-only{border-color:rgba(224,178,77,.28)}code{background:rgba(255,255,255,.08);padding:2px 6px;border-radius:6px}@media(max-width:850px){.question-grid{grid-template-columns:1fr}.paper{padding:20px;margin:22px auto}}