@import"https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&family=Noto+Sans+JP:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap";:root{--brand-50: rgba(200, 46, 49, .08);--brand-100: rgba(200, 46, 49, .15);--brand-200: rgba(200, 46, 49, .25);--brand-300: #e85555;--brand-400: #d93b3b;--brand-500: #c82e31;--brand-600: #b02428;--brand-700: #8f1c20;--brand-800: #6e1418;--brand-900: #4d0d10;--gold-50: rgba(212, 175, 55, .08);--gold-100: rgba(212, 175, 55, .15);--gold-200: rgba(212, 175, 55, .3);--gold-300: #e8cc6a;--gold-400: #debb4a;--gold-500: #d4af37;--gold-600: #b8962a;--gold-700: #9a7c1e;--indigo-deep: #1E1F26;--indigo-mid: #252730;--indigo-light: #2e3040;--gray-25: #ffffff;--gray-50: #f0f2f5;--gray-100: #e4e7ed;--gray-200: #cdd1da;--gray-300: #a9aeb8;--gray-400: #858b96;--gray-500: #636874;--gray-600: #454952;--gray-700: #2d3038;--gray-800: #1E1F26;--gray-900: #15161c;--gray-950: #0e0f14;--success: #22c55e;--success-light: rgba(34, 197, 94, .12);--warning: #f59e0b;--warning-light: rgba(245, 158, 11, .12);--danger: #ef4444;--danger-light: rgba(239, 68, 68, .12);--info: #3b82f6;--info-light: rgba(59, 130, 246, .12);--bg-app: #111114;--bg-surface: #191a21;--bg-elevated: #1f2028;--bg-hover: #272935;--bg-input: #14151b;--bg-secondary: var(--bg-surface);--bg-tertiary: var(--bg-hover);--bg-overlay: rgba(8, 8, 12, .88);--modal-overlay: rgba(3, 7, 18, .8);--text-primary: #EAEAEA;--text-secondary: #B0B3BB;--text-tertiary: #9295A0;--text-brand: var(--brand-300);--text-gold: var(--gold-400);--text-muted: #82858f;--border-default: rgba(255, 255, 255, .09);--border-hover: rgba(255, 255, 255, .16);--border-focus: var(--brand-500);--border-subtle: rgba(255, 255, 255, .06);--border-glass: rgba(255, 255, 255, .08);--border-color: var(--border-default);--border-color-hover: var(--border-hover);--border-gold: rgba(212, 175, 55, .3);--shadow-xs: 0 1px 3px rgba(0, 0, 0, .5);--shadow-sm: 0 2px 8px rgba(0, 0, 0, .5);--shadow-md: 0 4px 16px rgba(0, 0, 0, .55), 0 2px 4px rgba(0, 0, 0, .4);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .6), 0 4px 8px rgba(0, 0, 0, .4);--shadow-xl: 0 20px 50px rgba(0, 0, 0, .7), 0 8px 16px rgba(0, 0, 0, .5);--shadow-brand: 0 0 0 1px var(--brand-500), 0 0 20px rgba(200, 46, 49, .25);--shadow-gold: 0 0 0 1px var(--gold-500), 0 0 20px rgba(212, 175, 55, .2);--shadow-glow-red: 0 0 30px rgba(200, 46, 49, .3);--radius-xs: 4px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--radius-2xl: 24px;--radius-full: 9999px;--sp-1: 4px;--sp-2: 8px;--sp-3: 12px;--sp-4: 16px;--sp-5: 20px;--sp-6: 24px;--sp-8: 32px;--sp-10: 40px;--sp-12: 48px;--sp-16: 64px;--font-display: "Outfit", "Plus Jakarta Sans", -apple-system, system-ui, sans-serif;--font-sans: "Plus Jakarta Sans", "Noto Sans JP", -apple-system, BlinkMacSystemFont, system-ui, sans-serif;--font-mono: "JetBrains Mono", "Fira Code", ui-monospace, monospace;--ease-default: cubic-bezier(.2, 0, 0, 1);--ease-spring: cubic-bezier(.34, 1.56, .64, 1);--duration-fast: .12s;--duration-base: .22s;--duration-slow: .38s;--topnav-h: 56px}[data-theme=light]{--bg-app: #f4f1ea;--bg-surface: #fcfaf5;--bg-elevated: #ffffff;--bg-hover: #f1ebe0;--bg-input: #f7f2e8;--bg-secondary: #f6f1e7;--bg-tertiary: #eee6d8;--bg-overlay: rgba(244, 241, 234, .93);--modal-overlay: rgba(32, 22, 10, .42);--text-primary: #201913;--text-secondary: #4a3c31;--text-tertiary: #6f5e4e;--text-muted: #9d8d7f;--border-default: rgba(65, 45, 29, .15);--border-hover: rgba(65, 45, 29, .24);--border-subtle: rgba(65, 45, 29, .1);--border-glass: rgba(65, 45, 29, .08);--border-color: var(--border-default);--border-color-hover: var(--border-hover);--shadow-xs: 0 1px 3px rgba(25, 15, 7, .08);--shadow-sm: 0 3px 10px rgba(25, 15, 7, .1);--shadow-md: 0 8px 20px rgba(25, 15, 7, .12), 0 2px 6px rgba(25, 15, 7, .08);--shadow-lg: 0 18px 38px rgba(25, 15, 7, .14), 0 6px 14px rgba(25, 15, 7, .09);--shadow-xl: 0 28px 60px rgba(25, 15, 7, .16), 0 10px 22px rgba(25, 15, 7, .1);--shadow-brand: 0 0 0 1px var(--brand-500), 0 0 22px rgba(200, 46, 49, .16);--shadow-gold: 0 0 0 1px var(--gold-500), 0 0 22px rgba(212, 175, 55, .12);--shadow-glow-red: 0 0 30px rgba(200, 46, 49, .2);--indigo-deep: #efe8dd;--indigo-mid: #e7ddd0;--indigo-light: #dccfbf}[data-theme=light] .topnav{background:#faf9f7eb;border-bottom-color:#00000014}[data-theme=light] .topnav-link:hover{background:#0000000d;color:var(--text-primary)}[data-theme=light] .topnav-link:active{background:#00000014}[data-theme=light] .topnav-action-btn{color:var(--text-tertiary)}[data-theme=light] .topnav-action-btn:hover{background:#0000000f;color:var(--text-primary)}[data-theme=light] .topnav-user:hover{background:#0000000f}[data-theme=light] .topnav-dropdown{background:var(--bg-elevated);border-color:var(--border-default);box-shadow:var(--shadow-lg)}[data-theme=light] .card{background:var(--bg-elevated);border-color:var(--border-default)}[data-theme=light] .card:hover{border-color:var(--border-hover)}[data-theme=light] .card-glass{background:#fffc;border-color:#00000014}[data-theme=light] .form-input{background-color:var(--bg-input);border-color:var(--border-default);color:var(--text-primary)}[data-theme=light] .form-input:focus{background-color:var(--bg-elevated);border-color:var(--brand-500)}[data-theme=light] .form-input::placeholder{color:var(--text-muted)}[data-theme=light] select.form-input option{background:var(--bg-elevated);color:var(--text-primary)}[data-theme=light] .btn-secondary{background:#0000000a;border-color:#0000001f;color:var(--text-secondary)}[data-theme=light] .btn-secondary:hover{background:#00000014;border-color:#0000002e;color:var(--text-primary)}[data-theme=light] .btn-ghost{color:var(--text-secondary)}[data-theme=light] .btn-ghost:hover{background:#0000000f;color:var(--text-primary)}[data-theme=light] .chip{background:#0000000a;border-color:#0000001a;color:var(--text-secondary)}[data-theme=light] .chip.active{background:var(--brand-50);border-color:var(--brand-200);color:var(--brand-600)}[data-theme=light] .stat-card,[data-theme=light] .question-card{background:var(--bg-elevated);border-color:var(--border-default)}[data-theme=light] .modal-overlay{background:var(--modal-overlay)}[data-theme=light] .modal{background:var(--bg-elevated);border-color:var(--border-default)}[data-theme=light] .loading-page{background:var(--bg-app)}[data-theme=light] .spinner{border-color:var(--border-default);border-top-color:var(--brand-500)}[data-theme=light] .landing-page{background:var(--bg-app)}[data-theme=light] .lp-nav{background:linear-gradient(180deg,#ffffffe6,#fcfaf5db);border-bottom-color:var(--border-default)}[data-theme=light] .lp-stats-band{background:linear-gradient(180deg,#f6f1e7bf,#eee6d88f);border-top-color:var(--border-default);border-bottom-color:var(--border-default)}[data-theme=light] .lp-mockup-frame{background:var(--bg-elevated);border-color:var(--border-default);box-shadow:0 30px 70px -25px #2d1e1238,0 0 0 1px #412d1d14}[data-theme=light] .lp-mockup-chrome{background:var(--bg-secondary);border-bottom-color:var(--border-default)}[data-theme=light] .source-tab{color:var(--text-tertiary)}[data-theme=light] .source-tab.active{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--border-default)}[data-theme=light] .option-item{background:var(--bg-hover);border-color:#00000012}[data-theme=light] .option-item.correct{background:var(--success-light)}[data-theme=light] .badge-default{background:#00000012;color:var(--text-secondary)}[data-theme=light] .topnav-action-btn:active{background:#00000014}[data-theme=light] .topnav-dropdown-item:active{background:#0000000f}[data-theme=light] .btn-ghost:active{background:#00000014}[data-theme=light] .modal{box-shadow:var(--shadow-xl),0 0 0 1px #0000000f}[data-theme=light] .progress-bar{background:#00000012;border-color:#0000000d}[data-theme=light] .option-letter{background:#00000012;color:var(--text-secondary)}[data-theme=light] .quiz-card:hover{box-shadow:var(--shadow-md),0 0 0 1px #0000000f}[data-theme=light] .skeleton-shimmer{background:linear-gradient(90deg,#0000000a 25%,#00000017,#0000000a 75%);background-size:200% 100%}[data-theme=light] .quiz-card{background:var(--bg-elevated);border-color:var(--border-default)}[data-theme=light] .quiz-card-footer{background:var(--bg-hover);border-top-color:var(--border-subtle)}[data-theme=light] .chip:hover{background:#0000000d}[data-theme=light] .drop-zone{background:#00000004}[data-theme=light] ::-webkit-scrollbar-thumb{background:#0000002e}[data-theme=light] ::-webkit-scrollbar-thumb:hover{background:#c82e3159}[data-theme=light] .auth-right-content,[data-theme=light] .auth-right-content h2{color:#f0ece4}[data-theme=light] .auth-right-content p{color:#f0ece4b3}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeLegibility}body{font-family:var(--font-sans);background:var(--bg-app);color:var(--text-primary);font-size:14px;line-height:1.5;min-height:100vh;min-height:100dvh;overflow-x:clip;padding-left:env(safe-area-inset-left);padding-right:env(safe-area-inset-right);width:100%;max-width:100vw}html{overflow-x:clip;max-width:100vw}#root,.app-layout{width:100%;max-width:100vw;overflow-x:clip}::selection{background:var(--brand-500);color:#fff}a{color:var(--text-brand);text-decoration:none;transition:color var(--duration-fast) var(--ease-default)}a:hover{color:var(--brand-300)}:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;border-radius:var(--radius-sm)}:focus:not(:focus-visible){outline:none}button:focus-visible,.btn:focus-visible{outline:2px solid var(--brand-400);outline-offset:2px;box-shadow:0 0 0 4px #c82e3126}.topnav-link:focus-visible{outline:2px solid var(--brand-400);outline-offset:-2px}.form-input:focus-visible{outline:none}::-webkit-scrollbar{width:5px;height:5px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#ffffff21;border-radius:var(--radius-full);transition:background .2s}::-webkit-scrollbar-thumb:hover{background:#c82e3166}.icon{width:18px;height:18px;stroke:currentColor;stroke-width:1.75;stroke-linecap:round;stroke-linejoin:round;fill:none;flex-shrink:0}.icon-sm{width:14px;height:14px}.icon-md{width:20px;height:20px}.icon-lg{width:24px;height:24px}.icon-xl{width:32px;height:32px}.app-layout{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1;padding:var(--sp-6) var(--sp-8);max-width:1400px;margin:0 auto;width:100%}@media(max-width:768px){.main-content{padding:var(--sp-4)}.page-toolbar{flex-direction:column;align-items:stretch;gap:var(--sp-4);width:100%;text-align:left}.page-toolbar>div{text-align:left}.page-toolbar .btn{align-self:flex-start}.page-header,.page-header>*{text-align:left}.stats-row{grid-template-columns:1fr 1fr}.quiz-grid{grid-template-columns:1fr}.page-header h1{font-size:22px}}@media(max-width:480px){.main-content{padding:var(--sp-3)}.stats-row{grid-template-columns:1fr}.stat-card{padding:var(--sp-4)}.page-header h1{font-size:20px}.topnav-inner{padding:0 var(--sp-3);gap:var(--sp-3)}.btn-lg{padding:10px 18px;font-size:13px}.card{border-radius:var(--radius-lg)}}.topnav{height:var(--topnav-h);background:#1a1b20eb;border-bottom:1px solid var(--border-default);position:sticky;top:0;z-index:100;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px)}.topnav-inner{max-width:1400px;margin:0 auto;height:100%;display:flex;align-items:center;padding:0 var(--sp-6);gap:var(--sp-6)}.topnav-brand{display:flex;align-items:center;gap:var(--sp-2);text-decoration:none;flex-shrink:0}.topnav-brand-icon{width:32px;height:32px;border-radius:var(--radius-md);background:linear-gradient(135deg,var(--brand-500),var(--brand-700));display:flex;align-items:center;justify-content:center;box-shadow:0 2px 8px #c82e3159}.topnav-brand-icon svg{width:16px;height:16px;stroke:#fff;fill:none;stroke-width:2}.topnav-brand-name{font-size:16px;font-weight:700;letter-spacing:-.4px;color:var(--text-primary)}.topnav-links{display:flex;align-items:center;gap:2px;flex:1}.topnav-link{display:flex;align-items:center;gap:6px;padding:6px 12px;border-radius:var(--radius-md);color:var(--text-secondary);font-size:13px;font-weight:500;text-decoration:none;transition:all var(--duration-fast) var(--ease-default);white-space:nowrap}.topnav-link:hover{background:#ffffff0f;color:var(--text-primary);border-color:transparent}.topnav-link:active{background:#ffffff08;transform:scale(.97)}.topnav-link.active{background:#c82e311f;color:var(--brand-300);border:1px solid rgba(200,46,49,.15)}.topnav-search{display:flex;align-items:center;gap:7px;background:var(--bg-input);border:1px solid var(--border-default);border-radius:var(--radius-full);padding:5px 12px;transition:border-color .15s;flex-shrink:0}.topnav-search:focus-within{border-color:#c82e3173}.topnav-search-input{background:transparent;border:none;outline:none;font-size:13px;color:var(--text-primary);width:160px;font-family:inherit}.topnav-search-input::placeholder{color:var(--text-muted)}.topnav-actions{display:flex;align-items:center;gap:var(--sp-2);flex-shrink:0}.topnav-action-btn{width:32px;height:32px;border-radius:var(--radius-md);border:1px solid var(--border-default);background:transparent;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all var(--duration-fast)}.topnav-action-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-hover)}.topnav-action-btn:active{transform:scale(.92);background:#ffffff0a}.topnav-user{display:flex;align-items:center;gap:var(--sp-2);padding:4px 10px 4px 4px;border-radius:var(--radius-full);border:1px solid var(--border-default);cursor:pointer;transition:all var(--duration-fast)}.topnav-user:hover{background:var(--bg-hover);border-color:var(--border-hover)}.topnav-user:active{transform:scale(.97)}.topnav-dropdown{position:absolute;top:calc(100% + 6px);right:0;min-width:220px;background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);padding:var(--sp-2);z-index:200;animation:slide-up var(--duration-fast) var(--ease-default)}.topnav-dropdown-item{display:flex;align-items:center;gap:var(--sp-3);padding:8px 12px;border-radius:var(--radius-md);font-size:13px;font-weight:500;color:var(--text-secondary);cursor:pointer;transition:all var(--duration-fast);border:none;background:none;width:100%;text-align:left;font-family:var(--font-sans)}.topnav-dropdown-item:hover{background:var(--bg-hover);color:var(--text-primary)}.topnav-dropdown-item:active{background:#ffffff0a}.topnav-dropdown-item.danger:hover{background:#ef444414;color:var(--danger)}.topnav-dropdown-divider{height:1px;background:var(--border-default);margin:var(--sp-1) 0}.topnav-username{font-size:13px;font-weight:500;color:var(--text-primary)}.avatar{width:30px;height:30px;border-radius:var(--radius-full);background:linear-gradient(135deg,var(--brand-500),#9b1c1f);display:flex;align-items:center;justify-content:center;font-weight:700;font-size:12px;color:#fff;flex-shrink:0;border:1.5px solid rgba(200,46,49,.3)}@media(max-width:768px){.topnav-link span,.topnav-username{display:none}.topnav-search-input{width:120px}}.page-header{margin-bottom:var(--sp-8)}.page-header h1{font-family:var(--font-display);font-size:26px;font-weight:800;letter-spacing:-.8px;color:var(--text-primary);line-height:1.3}.page-header .page-desc{color:var(--text-secondary);font-size:14px;margin-top:var(--sp-2);line-height:1.6}.page-toolbar{display:flex;align-items:center;justify-content:space-between;gap:var(--sp-3);flex-wrap:wrap}.card{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:var(--sp-6);box-shadow:var(--shadow-sm);transition:all var(--duration-base) var(--ease-default);position:relative}.card:active{transform:scale(.995);box-shadow:var(--shadow-sm)}.card-glass{background:#0f172999;border:1px solid var(--border-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px)}.card-gradient-border{background:var(--bg-elevated);border-radius:var(--radius-xl);padding:var(--sp-6);position:relative;z-index:0}.card-gradient-border:before{content:"";position:absolute;inset:0;border-radius:var(--radius-xl);padding:1px;background:linear-gradient(135deg,#3b82f666,#8b5cf64d,#3b82f61a);-webkit-mask:linear-gradient(#fff 0 0) content-box,linear-gradient(#fff 0 0);-webkit-mask-composite:xor;mask-composite:exclude;pointer-events:none;z-index:-1}.card-interactive{cursor:pointer}.card-interactive:hover{border-color:#3b82f666;box-shadow:var(--shadow-md),0 0 20px #3b82f61a;transform:translateY(-2px)}.card-interactive:active{transform:translateY(0);box-shadow:var(--shadow-xs)}.stats-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:var(--sp-4);margin-bottom:var(--sp-8)}.stat-card{background:var(--bg-elevated);border:1px solid var(--border-default);border-radius:var(--radius-xl);padding:var(--sp-5) var(--sp-6);box-shadow:var(--shadow-sm);transition:transform var(--duration-base) var(--ease-default),box-shadow var(--duration-base) var(--ease-default),border-color var(--duration-base) var(--ease-default)}.stat-card:hover{will-change:transform,box-shadow;box-shadow:var(--shadow-md);transform:translateY(-3px);border-color:var(--border-hover)}.stat-card .stat-label{font-size:12px;font-weight:500;color:var(--text-tertiary);text-transform:uppercase;letter-spacing:.5px;margin-bottom:var(--sp-2);display:flex;align-items:center;gap:var(--sp-2)}.stat-card .stat-value{font-size:28px;font-weight:800;letter-spacing:-1px;color:var(--text-primary);line-height:1.2;font-family:var(--font-display)}.stat-card .stat-sub{font-size:12px;color:var(--text-tertiary);margin-top:var(--sp-1)}.stat-dot{width:8px;height:8px;border-radius:var(--radius-full);flex-shrink:0}.stat-dot.purple{background:var(--brand-500)}.stat-dot.gold{background:var(--gold-500)}.stat-dot.green{background:var(--success)}.stat-dot.amber{background:var(--warning)}.stat-dot.blue{background:var(--info)}.stat-dot.pink{background:#ec4899}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--sp-2);padding:8px 16px;border:1px solid transparent;border-radius:var(--radius-md);font-family:var(--font-sans);font-size:13px;font-weight:600;cursor:pointer;transition:all var(--duration-fast) var(--ease-default);white-space:nowrap;line-height:1.4}.btn:disabled{opacity:.6;cursor:not-allowed;pointer-events:none;transform:none!important;box-shadow:none!important}.btn-primary{background:linear-gradient(135deg,var(--brand-500) 0%,var(--brand-600) 100%);color:#fff;border-color:var(--brand-600);box-shadow:0 2px 8px #c82e314d}.btn-primary:hover{background:linear-gradient(135deg,var(--brand-400) 0%,var(--brand-500) 100%);border-color:var(--brand-500);box-shadow:0 4px 16px #c82e3166;transform:translateY(-1px)}.btn-primary:active{transform:translateY(0);box-shadow:0 1px 4px #c82e314d}.btn-secondary{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--border-default)}.btn-secondary:hover{background:var(--bg-hover);border-color:var(--border-hover);box-shadow:var(--shadow-xs);transform:translateY(-1px)}.btn-secondary:active{transform:translateY(0);box-shadow:none;background:var(--bg-input)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent;padding:6px 10px}.btn-ghost:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-subtle)}.btn-ghost:active{background:#ffffff0a;transform:scale(.97)}.btn-gold{background:linear-gradient(135deg,var(--gold-500) 0%,var(--gold-600) 100%);color:#0e0f14;border-color:var(--gold-600);font-weight:700;box-shadow:0 2px 8px #d4af3740}.btn-gold:hover{box-shadow:0 4px 16px #d4af3766;transform:translateY(-1px)}.btn-gold:active{transform:translateY(0);box-shadow:0 1px 4px #d4af3740}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger);box-shadow:0 2px 8px #ef444440}.btn-danger:hover{background:#dc2626;box-shadow:0 4px 16px #ef444459;transform:translateY(-1px)}.btn-danger:active{transform:translateY(0);box-shadow:0 1px 4px #ef444440}.btn-sm{padding:5px 10px;font-size:12px}.btn-lg{padding:10px 20px;font-size:14px;border-radius:var(--radius-lg)}.btn-icon{width:32px;height:32px;padding:0}.w-full{width:100%}.form-label{display:block;font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:var(--sp-2);letter-spacing:.1px}.form-input{width:100%;padding:10px 14px;background-color:var(--bg-input);border:1px solid 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