.qe-wrap{min-height:100vh;display:flex;flex-direction:column;background:var(--c-bg);color:var(--c-text);font-family:DM Sans,system-ui,sans-serif}.qe-header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--c-border);background:var(--c-surface);position:sticky;top:0;z-index:10}.qe-logo{display:flex;align-items:center;gap:8px;text-decoration:none;color:var(--c-text)}.qe-logo-bars{letter-spacing:-3px;font-size:18px;color:var(--c-up);font-weight:700}.qe-logo-name{font-family:DM Mono,monospace;font-size:13px;font-weight:500;letter-spacing:.12em;color:var(--c-text)}.qe-header-right{display:flex;align-items:center;gap:16px}.qe-week-label{font-family:DM Mono,monospace;font-size:11px;color:var(--c-muted)}.qe-home-link{font-size:13px;color:var(--c-muted);text-decoration:none}.qe-home-link:hover{color:var(--c-text2)}#qe-theme-toggle{background:transparent;border:1px solid var(--c-border);color:var(--c-muted);padding:4px 7px;border-radius:5px;cursor:pointer;font-size:15px;line-height:1;display:flex;align-items:center}#qe-theme-toggle:hover{color:var(--c-text);border-color:var(--c-hover)}.qe-intro,.qe-body,.qe-final{flex:1;width:100%;max-width:640px;margin:0 auto;padding:40px 24px 60px}.qe-intro-icon{font-size:40px;color:var(--c-up);line-height:1;margin-bottom:16px}.qe-title{font-size:28px;font-weight:500;color:var(--c-text);margin-bottom:10px;line-height:1.25}.qe-subtitle{font-size:15px;color:var(--c-text2);margin-bottom:32px;line-height:1.6}.qe-start-btn{background:var(--c-up);color:#fff;border:none;border-radius:8px;padding:13px 28px;font-family:DM Sans,sans-serif;font-size:15px;font-weight:500;cursor:pointer;transition:opacity .15s}.qe-start-btn:hover{opacity:.88}.qe-progress{display:flex;align-items:center;gap:12px;margin-bottom:24px}.qe-prog-track{flex:1;height:4px;background:var(--c-card);border-radius:2px;overflow:hidden}.qe-prog-fill{height:100%;background:var(--c-up);border-radius:2px;transition:width .35s ease}.qe-prog-label{font-family:DM Mono,monospace;font-size:11px;color:var(--c-muted);white-space:nowrap}.qe-card{background:var(--c-surface);border:1px solid var(--c-border);border-radius:12px;padding:28px 24px}.qe-question{font-size:17px;font-weight:500;color:var(--c-text);line-height:1.55;margin-bottom:24px}.qe-opts{display:flex;flex-direction:column;gap:8px}.qe-opt{display:flex;align-items:flex-start;gap:12px;width:100%;text-align:left;background:var(--c-card);border:1px solid var(--c-border);border-radius:8px;padding:13px 16px;color:var(--c-text);font-family:DM Sans,sans-serif;font-size:14px;line-height:1.45;cursor:pointer;transition:border-color .15s,background .15s}.qe-opt:hover:not(:disabled){border-color:var(--c-up);background:var(--c-hover)}.qe-opt:disabled{cursor:default}.qe-opt-letter{font-family:DM Mono,monospace;font-size:12px;font-weight:500;color:var(--c-muted);min-width:18px;line-height:1.7;flex-shrink:0}.qe-opt.correct{border-color:#1fa971;background:#1fa9711a}.qe-opt.correct .qe-opt-letter{color:#1fa971}.qe-opt.incorrect{border-color:#d14343;background:#d143431a}.qe-opt.incorrect .qe-opt-letter{color:#d14343}.qe-opt.dimmed{opacity:.45}.qe-feedback{margin-top:20px;padding-top:20px;border-top:1px solid var(--c-border)}.qe-verdict{font-weight:600;font-size:15px;margin-bottom:8px}.qe-verdict.correct{color:#1fa971}.qe-verdict.incorrect{color:#d14343}.qe-expl{font-size:14px;color:var(--c-text2);line-height:1.6;margin-bottom:20px}.qe-next-btn{background:transparent;border:1px solid var(--c-up);color:var(--c-up);border-radius:7px;padding:10px 20px;font-family:DM Sans,sans-serif;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s,color .15s}.qe-next-btn:hover{background:var(--c-up);color:#fff}.qe-final{text-align:center}.qe-score-wrap{margin-bottom:36px}.qe-score-num{font-family:DM Mono,monospace;font-size:72px;font-weight:500;color:var(--c-up);line-height:1;margin-bottom:8px}.qe-score-denom{font-size:36px;color:var(--c-muted)}.qe-score-label{font-size:16px;color:var(--c-text2);margin-bottom:12px}.qe-score-pct{display:inline-block;background:var(--c-card);border:1px solid var(--c-border);border-radius:20px;padding:6px 16px;font-size:13px;color:var(--c-text2);margin-top:4px}.qe-badge-wrap{width:280px;max-width:96%;margin:4px auto 24px}.qe-badge-wrap svg{display:block;width:100%;height:auto;border-radius:12px}.qe-share-row{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin-bottom:28px}.qe-share-btn{display:inline-flex;align-items:center;gap:8px;padding:11px 20px;border-radius:8px;font-family:DM Sans,sans-serif;font-size:14px;font-weight:500;text-decoration:none;transition:opacity .15s}.qe-share-btn:hover{opacity:.85}.qe-share-x{background:#000;color:#fff}.qe-share-li{background:#0a66c2;color:#fff}.qe-final-actions{display:flex;gap:20px;justify-content:center;font-size:14px}.qe-retake-link{color:var(--c-up);text-decoration:none}.qe-retake-link:hover{text-decoration:underline}.qe-home-link2{color:var(--c-muted);text-decoration:none}.qe-home-link2:hover{color:var(--c-text2)}@media(max-width:480px){.qe-intro,.qe-body,.qe-final{padding:28px 16px 48px}.qe-card{padding:20px 16px}.qe-title{font-size:22px}.qe-question{font-size:15px}.qe-score-num{font-size:56px}}