.qc-page{min-height:100vh;background:#0b1120;display:flex;justify-content:center;padding:24px 14px;font-family:Inter,system-ui,sans-serif;color:#e2e8f0}.qc-card{width:100%;max-width:1150px;background:#111827;border-radius:18px;padding:24px;box-shadow:0 15px 40px #0009;border:1px solid #1f2937}.qc-header{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:10px;border-bottom:1px solid #1f2937;padding-bottom:18px;margin-bottom:22px}.qc-header h2{margin:0;font-size:20px;color:#fff}.qc-header p{margin:4px 0 0;color:#9ca3af;font-size:13px}.qc-lesson{background:#1f2937;color:#60a5fa;padding:6px 14px;border-radius:30px;font-size:12px;font-weight:600}.qc-grid{display:grid;grid-template-columns:1fr 1fr;gap:22px}@media(max-width:900px){.qc-grid{grid-template-columns:1fr}}.qc-panel{border-radius:16px;padding:18px;background:#0f172a;border:1px solid #1f2937}.qc-panel h3{margin-top:0;margin-bottom:14px;color:#fff;font-size:16px}.qc-panel.old{background:#0b1220}.qc-panel.new{border:1px solid #2563eb;background:#0b1220}.qc-question{font-weight:600;margin-bottom:14px;font-size:15px;line-height:1.5;color:#f1f5f9}.qc-options{padding-left:16px;margin-bottom:14px}.qc-options li{margin-bottom:8px;color:#cbd5e1}.qc-answer{background:#22c55e26;color:#22c55e;padding:10px 12px;border-radius:10px;font-weight:600;margin-bottom:14px;border:1px solid rgba(34,197,94,.4);font-size:14px}.qc-explanation{font-size:14px;color:#cbd5e1;line-height:1.5}.qc-panel.new label{font-weight:600;font-size:13px;display:block;margin:14px 0 6px;color:#f1f5f9}.qc-panel.new input,.qc-panel.new textarea,.qc-panel.new select{width:100%;padding:12px;border-radius:10px;border:1px solid #374151;font-size:14px;background:#111827;color:#fff;transition:all .2s ease}.qc-panel.new textarea{resize:vertical;min-height:90px}.qc-panel.new input::placeholder,.qc-panel.new textarea::placeholder{color:#6b7280}.qc-panel.new input:focus,.qc-panel.new textarea:focus,.qc-panel.new select:focus{outline:none;border-color:#3b82f6;box-shadow:0 0 0 3px #3b82f64d}.qc-options-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:600px){.qc-options-grid{grid-template-columns:1fr}}.qc-submit{margin-top:28px;width:100%;padding:14px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);color:#fff;font-size:15px;font-weight:700;border:none;border-radius:12px;cursor:pointer;transition:.2s ease}.qc-submit:hover{transform:translateY(-1px);box-shadow:0 8px 20px #2563eb66}.qc-note{margin-top:14px;text-align:center;font-size:13px;color:#facc15;background:#facc151f;padding:10px;border-radius:10px;border:1px solid rgba(250,204,21,.4)}@media(max-width:500px){.qc-card{padding:18px}.qc-header h2{font-size:18px}.qc-submit{font-size:14px}}.admin-review-page{padding:24px;background:#f5f7fb;min-height:100vh}.admin-review-page h2{margin-bottom:20px;color:#333}.review-card{background:#fff;border-radius:14px;padding:20px;margin-bottom:24px;box-shadow:0 10px 30px #00000014}.meta{display:flex;justify-content:space-between;font-size:14px;color:#666;margin-bottom:12px}.version{background:#eef2ff;color:#4f46e5;padding:4px 10px;border-radius:999px}.question-compare{display:grid;grid-template-columns:1fr 1fr;gap:16px}.question-box{padding:16px;border-radius:12px}.question-box.old{background:#f1f5f9}.question-box.new{background:#ecfeff;border:1px solid #67e8f9}.question-box h4{margin-bottom:8px}.question-box ul{padding-left:16px}.answer{display:inline-block;margin-top:10px;font-weight:700}.action-bar{display:flex;justify-content:flex-end;gap:12px;margin-top:18px}.approve-btn{background:#22c55e;color:#fff;padding:8px 16px;border-radius:10px;border:none;cursor:pointer}.reject-btn{background:#ef4444;color:#fff;padding:8px 16px;border-radius:10px;border:none;cursor:pointer}.approve-btn:hover{background:#16a34a}.reject-btn:hover{background:#dc2626}.loading,.error{padding:20px;font-size:16px}