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env(safe-area-inset-bottom,0px));padding-bottom:env(safe-area-inset-bottom,0px);background:#0d1117;border-top:1px solid var(--border-default);display:none;align-items:center;justify-content:space-around;z-index:100}@media (max-width: 768px){.mobile-bottom-nav{display:flex}body{padding-bottom:calc(100px + env(safe-area-inset-bottom,0px))}}.mobile-tab{display:flex;flex-direction:column;align-items:center;gap:3px;font-family:var(--font-heading);font-size:10px;font-weight:600;color:var(--text-muted);cursor:pointer;padding:8px 12px;transition:color .2s;background:none;border:none}.mobile-tab.active{color:var(--accent-green)}.mobile-tab-icon{width:20px;height:20px;display:flex;align-items:center;justify-content:center}.mobile-tab-icon svg{width:20px;height:20px}.corner-score{position:absolute;top:8px;right:0;font-family:var(--font-mono);font-size:13px;color:var(--accent-green);background:#4ade801a;padding:3px 10px;border-radius:6px}@media (max-width: 768px){.section-grid,.side-by-side,.bucket-zones,.flow-data-grid{grid-template-columns:1fr}.content-wrap{padding:24px 16px}h1{font-size:24px}.mobile-stack-grid{grid-template-columns:1fr!important}svg{max-width:100%}}.mt-4{margin-top:4px}.mt-8{margin-top:8px}.mt-12{margin-top:12px}.mt-16{margin-top:16px}.mt-20{margin-top:20px}.mt-24{margin-top:24px}.mt-32{margin-top:32px}.mt-48{margin-top:48px}.mb-8{margin-bottom:8px}.mb-12{margin-bottom:12px}.mb-16{margin-bottom:16px}.mb-20{margin-bottom:20px}.mb-24{margin-bottom:24px}.mb-32{margin-bottom:32px}.gap-12{gap:12px}.text-center{text-align:center}.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.cta-footer-brand{text-align:center;padding:20px 0 8px;margin-top:32px;border-top:1px solid var(--border-default)}.cta-footer-brand a{font-family:var(--font-heading);font-size:12px;font-weight:600;color:var(--text-dim);text-decoration:none;letter-spacing:.04em;transition:color .2s}.cta-footer-brand a:hover{color:var(--accent-green)}.cta-built-by{background:var(--bg-card);border:1px solid var(--border-default);border-radius:16px;padding:20px 24px;margin-bottom:24px;display:flex;align-items:center;justify-content:space-between;transition:border-color .2s}.cta-built-by:hover{border-color:#4ade804d}.cta-nudge{font-family:var(--font-body);font-size:13px;color:var(--text-secondary);margin-top:16px;text-align:center}.cta-nudge a{color:var(--accent-green);text-decoration:none;font-weight:600}.cta-nudge a:hover{text-decoration:underline}.cta-review-card{background:#4ade800a;border:1px solid rgba(74,222,128,.15);border-radius:16px;padding:20px 24px;margin-top:32px;text-align:center}.interstitial-wrap{display:flex;align-items:center;justify-content:center;min-height:100vh;padding:48px 24px}.interstitial-card{background:#0d1117fa;border:1px solid var(--border-default);border-radius:20px;padding:48px 40px;max-width:540px;width:100%;text-align:center;position:relative;overflow:hidden}.post-exam-cta-grid{display:grid;grid-template-columns:1fr;gap:12px;margin-top:28px;text-align:left}.post-exam-cta-item{background:var(--bg-interactive);border:1px solid var(--border-default);border-radius:14px;padding:18px 20px;cursor:pointer;transition:all .2s;display:flex;align-items:flex-start;gap:14px;text-decoration:none}.post-exam-cta-item:hover{border-color:#4ade804d;background:var(--bg-card-hover)}.post-exam-cta-icon{font-size:22px;flex-shrink:0;margin-top:2px}.post-exam-cta-text h3{font-size:14px;margin-bottom:4px}.post-exam-cta-text p{font-size:13px;color:var(--text-secondary);line-height:1.5}.qr-breakdown{display:flex;flex-direction:column;gap:0;margin:20px 0;border:1px solid var(--border-default);border-radius:12px;overflow:hidden}.qr-row{display:flex;align-items:center;padding:12px 16px;gap:12px;font-family:var(--font-heading);font-size:13px;background:var(--bg-card);border-bottom:1px solid var(--border-default)}.qr-row:last-child{border-bottom:none}.qr-num{font-weight:700;color:var(--text-muted);width:30px;flex-shrink:0}.qr-answer{flex:1;color:var(--text-body)}.qr-correct{color:var(--accent-green)}.qr-wrong{color:var(--accent-red)}.qr-correct-answer{font-size:12px;color:var(--text-muted);flex-shrink:0}.section-map-card{background:#0d1117fa;border:1px solid var(--border-default);border-radius:16px;padding:32px;max-width:540px;width:90%;position:relative}.section-map-card h2{margin-bottom:24px;text-align:center}.section-map-close{position:absolute;top:16px;right:16px;width:32px;height:32px;border-radius:8px;border:1px solid var(--border-default);background:transparent;color:var(--text-muted);font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s;font-family:var(--font-heading)}.section-map-close:hover{color:var(--text-primary);border-color:#ffffff26}.section-map-list{display:flex;flex-direction:column;gap:0}.section-map-row{display:flex;align-items:center;justify-content:space-between;padding:12px 8px;border-bottom:1px solid var(--border-default);cursor:pointer;transition:background .2s;border-radius:8px}.section-map-row:hover{background:#0f172a80}.section-map-row:last-child{border-bottom:none}.smap-left{display:flex;align-items:center;gap:10px;font-family:var(--font-heading);font-size:14px;color:var(--text-primary)}.smap-left .smap-icon{width:20px;text-align:center;font-size:13px}.smap-part{font-family:var(--font-heading);font-size:11px;color:var(--text-muted);margin-left:30px;margin-top:2px}.smap-right{display:flex;align-items:center;gap:12px}.smap-score{font-family:var(--font-mono);font-size:12px;color:var(--text-secondary)}.pe-breakdown{display:flex;flex-direction:column;gap:10px;margin:20px 0}.pe-q-card{background:var(--bg-interactive);border:1px solid var(--border-default);border-radius:12px;padding:14px 18px}.pe-q-text{font-family:var(--font-heading);font-size:13px;color:var(--text-body);margin-bottom:6px;line-height:1.4}.pe-q-detail{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;font-family:var(--font-heading);font-size:12px}.pe-q-detail.has-correction{flex-direction:column;align-items:flex-start;gap:2px}.pe-q-answer{color:var(--text-secondary)}.pe-q-link{color:var(--accent-amber);text-decoration:none;font-weight:600;cursor:pointer}.pe-q-link:hover{text-decoration:underline}@keyframes reviewPulse{0%,to{box-shadow:0 0 #eab3084d}50%{box-shadow:0 0 8px 2px #eab30840}}#root{min-height:100vh}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff1a;border-radius:3px}::-webkit-scrollbar-thumb:hover{background:#fff3}