:root{--bg-primary:#09090b;--bg-secondary:#18181b;--bg-tertiary:#27272a;--bg-elevated:#18181b;--text-primary:#fafafa;--text-secondary:#a1a1aa;--text-tertiary:#71717a;--text-muted:#52525b;--border-primary:#27272a;--border-secondary:#3f3f46;--accent:#fafafa;--accent-hover:#e4e4e7;--accent-light:#27272a;--success:#22c55e;--success-bg:#f0fdf4;--error:#ef4444;--error-bg:#fef2f2;--warning:#f59e0b;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-5:1.25rem;--space-6:1.5rem;--space-8:2rem;--space-10:2.5rem;--space-12:3rem;--space-16:4rem;--font-sans:-apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;--font-mono:"SF Mono", SFMono-Regular, ui-monospace, Menlo, Monaco, "Cascadia Mono", monospace;--radius-sm:6px;--radius-md:8px;--radius-lg:12px;--radius-xl:16px;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -2px #0000000d;--shadow-lg:0 10px 15px -3px #0000000d, 0 4px 6px -4px #0000000d;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-base:.2s cubic-bezier(.4, 0, .2, 1)}#root{box-sizing:border-box;flex-direction:column;width:720px;max-width:100%;min-height:100svh;margin:0 auto;display:flex}body{background-color:var(--bg-primary);-webkit-user-select:none;user-select:none;margin:0}html{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizelegibility}body{min-height:100vh;font-size:14px;line-height:1.5}#root{min-height:100vh}@keyframes fadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}@keyframes spin{to{transform:rotate(360deg)}}@keyframes select{0%{transform:scale(1)}50%{transform:scale(.98)}to{transform:scale(1)}}@media (width<=640px){.container{padding:var(--space-4)}}._headerContainer_13r0a_1{z-index:100;background:var(--bg-primary);border-bottom:1px solid var(--border-primary);width:720px;max-width:100%;padding-top:var(--space-6);padding-bottom:var(--space-6);justify-content:space-between;align-items:center;margin:0 auto;display:flex;position:fixed;top:0;left:0;right:0}._appLogoContainer_13r0a_18{justify-content:center;align-items:center;gap:1rem;display:flex}._appLogo_13r0a_18{background:var(--accent);border-radius:var(--radius-md);width:32px;height:32px;color:var(--bg-primary);justify-content:center;align-items:center;font-size:16px;font-weight:700;display:flex}._appName_13r0a_36{letter-spacing:-.01em;font-size:15px;font-weight:600}._headerMeta_13r0a_41{color:var(--text-secondary);font-size:13px;font-family:var(--font-mono)}@media (width<=640px){._headerContainer_13r0a_1{padding:var(--space-4) var(--space-4)}._appName_13r0a_36{font-size:14px}._headerMeta_13r0a_41{display:none}._appLogo_13r0a_18{width:28px;height:28px;font-size:14px}}._container_1899a_1{flex-direction:column;justify-content:center;align-items:flex-start;max-width:480px;min-height:80vh;padding:5rem 0;display:flex}._title_1899a_11{letter-spacing:-.02em;color:var(--text-primary);text-align:start;margin-bottom:1rem;font-size:32px;font-weight:600;line-height:1.2}._description_1899a_21{color:var(--text-secondary);text-align:start;margin-bottom:2rem;font-size:16px;line-height:1.6}._stats_1899a_30{border-top:1px solid var(--border-primary);border-bottom:1px solid var(--border-primary);text-align:start;gap:3rem;width:100%;margin-bottom:2.5rem;padding:1.5rem 0;display:flex}._statItem_1899a_41{flex-direction:column;gap:.25rem;display:flex}._statValue_1899a_47{font-family:var(--font-mono,monospace);color:var(--text-primary);font-size:20px;font-weight:600}._statLabel_1899a_54{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;font-size:13px}._selectorSection_1899a_62{flex-direction:column;gap:.75rem;width:100%;margin-bottom:2rem;display:flex}._selectorLabel_1899a_70{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.05em;text-align:start;font-size:13px;font-weight:500}._selector_1899a_62{gap:.75rem;display:flex}._option_1899a_84{border:1px solid var(--border-primary);color:var(--text-secondary);cursor:pointer;background:0 0;border-radius:8px;flex:1;padding:.875rem 1.5rem;font-size:15px;font-weight:500;transition:all .15s}._option_1899a_84:hover{border-color:var(--text-tertiary);color:var(--text-primary)}._selected_1899a_102{background:var(--text-primary);border-color:var(--text-primary);color:var(--bg-primary)}._selected_1899a_102:hover{background:var(--text-primary);color:var(--bg-primary);opacity:.9}._startQuizBtn_1899a_115{background-color:var(--bg-primary);color:var(--text-primary);border:1px solid var(--border-primary);cursor:pointer;border-radius:10px;min-width:140px;padding:16px 28px;font-size:15px;font-weight:600;transition:all .15s}._startQuizBtn_1899a_115:hover{background-color:var(--bg-secondary);border-color:var(--text-tertiary)}._startQuizBtn_1899a_115:active{transform:scale(.98)}@media (width<=640px){._container_1899a_1{min-height:auto;margin-top:5rem;padding:1.5rem}._title_1899a_11{font-size:28px}._stats_1899a_30{justify-content:space-between;gap:2rem}._statValue_1899a_47{font-size:18px}._selector_1899a_62{gap:.5rem}._option_1899a_84{padding:.75rem 1rem;font-size:14px}._startQuizBtn_1899a_115{width:100%;padding:18px 28px}}@media (width<=380px){._stats_1899a_30{gap:1.5rem}._statLabel_1899a_54{font-size:11px}._selectorLabel_1899a_70{font-size:12px}}._container_1tcua_1{flex-direction:column;justify-content:center;align-items:center;gap:1.5rem;min-height:80vh;display:flex}._spinner_1tcua_10{border:3px solid var(--border-primary);border-top-color:var(--text-primary);border-radius:50%;width:40px;height:40px;animation:1s linear infinite _spin_1tcua_10}@keyframes _spin_1tcua_10{to{transform:rotate(360deg)}}._text_1tcua_23{color:var(--text-secondary);font-size:14px}._container_oc56t_1{box-sizing:border-box;flex-direction:column;place-content:center;width:100%;margin-top:2rem;padding:0 1rem;animation:.3s _fadeIn_oc56t_1;display:flex}@keyframes _fadeIn_oc56t_1{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}._quizProgress_oc56t_20{box-sizing:border-box;align-items:center;gap:1rem;width:100%;margin-top:5rem;margin-bottom:2rem;display:flex}._progressWrapper_oc56t_30{flex-direction:column;flex:1;gap:.5rem;min-width:0;display:flex}._progressLabel_oc56t_38{color:var(--text-secondary);justify-content:space-between;align-items:center;font-size:13px;display:flex}._categoryLabel_oc56t_46{white-space:nowrap;text-overflow:ellipsis;margin-left:1rem;overflow:hidden}._progressTrack_oc56t_53{background:var(--border-secondary);border-radius:3px;width:100%;height:6px;position:relative;overflow:hidden}._progressFill_oc56t_62{background:var(--warning);border-radius:3px;min-width:6px;height:100%;transition:width .4s;position:absolute;top:0;left:0}._scoreBadge_oc56t_73{background:var(--bg-secondary);border:1px solid var(--border-primary);color:var(--text-primary);white-space:nowrap;border-radius:8px;flex-shrink:0;min-width:fit-content;padding:.5rem .75rem;font-family:monospace;font-size:14px;font-weight:600}._questionCard_oc56t_89{background:var(--bg-secondary);border:1px solid var(--border-primary);box-sizing:border-box;border-radius:16px;width:100%;margin-bottom:1.5rem;padding:2rem}._meta_oc56t_99{flex-wrap:wrap;gap:.75rem;margin-bottom:1.5rem;display:flex}._category_oc56t_46{text-transform:uppercase;letter-spacing:.05em;color:var(--text-secondary);background:var(--bg-primary);border:1px solid var(--border-primary);border-radius:6px;padding:.25rem .75rem;font-size:12px}._difficulty_oc56t_117{text-transform:uppercase;letter-spacing:.05em;border:1px solid;border-radius:6px;padding:.25rem .75rem;font-family:monospace;font-size:11px;font-weight:600}._easy_oc56t_128{color:#22c55e;border-color:#22c55e4d}._medium_oc56t_129{color:#f59e0b;border-color:#f59e0b4d}._hard_oc56t_130{color:#ef4444;border-color:#ef44444d}._questionText_oc56t_132{color:var(--text-primary);text-align:left;margin:0;font-size:20px;font-weight:500;line-height:1.5}._options_oc56t_143{box-sizing:border-box;flex-direction:column;gap:.75rem;width:100%;display:flex}._option_oc56t_143{box-sizing:border-box;background:var(--bg-secondary);border:1px solid var(--border-primary);cursor:pointer;text-align:left;width:100%;color:var(--text-primary);border-radius:12px;align-items:center;padding:1.25rem 1.5rem;font-family:inherit;font-size:15px;transition:all .15s;display:flex}._option_oc56t_143:hover:not(:disabled){border-color:var(--text-tertiary)}._marker_oc56t_172{border:2px solid var(--border-primary);width:28px;height:28px;color:var(--text-secondary);border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;margin-right:1rem;font-size:12px;font-weight:600;transition:all .15s;display:flex}._option_oc56t_143:hover:not(:disabled) ._marker_oc56t_172{border-color:var(--text-secondary)}._optionText_oc56t_192{word-break:break-word;flex:1;font-weight:500}._correct_oc56t_200{color:#22c55e;background:#22c55e1a;border-color:#22c55e}._correct_oc56t_200 ._marker_oc56t_172{color:#fff;background:#22c55e;border-color:#22c55e}._incorrect_oc56t_211{color:#ef4444;opacity:.8;background:#ef44441a;border-color:#ef4444}._incorrect_oc56t_211 ._marker_oc56t_172{color:#ef4444;border-color:#ef4444}._disabled_oc56t_222{opacity:.5;cursor:not-allowed}@media (width<=640px){._container_oc56t_1{padding:0 1rem 1rem}._quizProgress_oc56t_20{flex-direction:row;align-items:center;gap:.5rem;margin-top:4rem;margin-bottom:1.5rem}._progressWrapper_oc56t_30{flex:1;min-width:0}._progressLabel_oc56t_38{font-size:11px}._categoryLabel_oc56t_46{display:none}._scoreBadge_oc56t_73{padding:.4rem .5rem;font-size:12px}._questionCard_oc56t_89{padding:1.25rem}._meta_oc56t_99{margin-bottom:1rem}._questionText_oc56t_132{font-size:16px}._option_oc56t_143{padding:.875rem 1rem;font-size:14px}._marker_oc56t_172{width:24px;height:24px;margin-right:.75rem;font-size:11px}}@media (width<=380px){._questionText_oc56t_132{font-size:15px}._option_oc56t_143{padding:.75rem .875rem}}._container_pvsxb_1{flex-direction:column;justify-content:center;align-items:center;max-width:400px;min-height:80vh;margin:0 auto;padding:5rem;animation:.5s _fadeIn_pvsxb_1;display:flex}@keyframes _fadeIn_pvsxb_1{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}._icon_pvsxb_18{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:16px;justify-content:center;align-items:center;width:64px;height:64px;margin-bottom:1.5rem;font-size:28px;display:flex}._score_pvsxb_31{letter-spacing:-.03em;color:var(--text-primary);margin-bottom:.25rem;font-family:monospace;font-size:48px;font-weight:700}._maxScore_pvsxb_40{color:var(--text-secondary);margin-bottom:1rem;font-size:14px}._message_pvsxb_46{color:var(--text-primary);text-align:center;margin-bottom:2rem;font-size:16px;font-weight:500}._breakdown_pvsxb_54{background:var(--bg-secondary);border:1px solid var(--border-primary);border-radius:12px;width:100%;margin-bottom:2rem;padding:1.25rem}._row_pvsxb_63{justify-content:space-between;align-items:center;padding:.75rem 0;font-size:14px;display:flex}._row_pvsxb_63:not(:last-child){border-bottom:1px solid var(--border-primary)}._label_pvsxb_75{color:var(--text-secondary);align-items:center;gap:.4rem;display:flex}._value_pvsxb_82{color:var(--text-primary);font-family:monospace;font-weight:600}._actions_pvsxb_88{width:100%}._primaryBtn_pvsxb_92{background:var(--text-primary);width:100%;color:var(--bg-primary);cursor:pointer;border:none;border-radius:10px;justify-content:center;align-items:center;gap:.5rem;padding:16px 28px;font-size:15px;font-weight:600;transition:all .15s;display:flex}._primaryBtn_pvsxb_92:hover{opacity:.9;transform:translateY(-1px)}@media (width<=640px){._container_pvsxb_1{min-height:auto;margin-top:2rem;padding:3rem}._score_pvsxb_31{font-size:40px}._breakdown_pvsxb_54{padding:1rem}}._toast_1op9o_1{opacity:0;z-index:1000;pointer-events:none;border-radius:12px;padding:.75rem 1.5rem;font-size:14px;font-weight:500;transition:all .2s cubic-bezier(.4,0,.2,1);position:fixed;bottom:2rem;left:50%;transform:translate(-50%)translateY(100px);box-shadow:0 10px 15px -3px #0000004d}._toast_1op9o_1._show_1op9o_17{opacity:1;transform:translate(-50%)translateY(0)}._info_1op9o_23{color:#fafafa;background:#27272a;border:1px solid #3f3f46}._success_1op9o_29{color:#fff;background:#22c55e}._error_1op9o_34{color:#fff;background:#ef4444}