.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}:root{--color-primary: #4f46e5;--color-primary-hover: #4338ca;--color-primary-light: #eef2ff;--color-primary-50: #eef2ff;--color-primary-dark: #3730a3;--color-primary-dark-hover: #312e81;--color-primary-dark-light: #eef2ff;--color-cta: #ea580c;--color-cta-hover: #c2410c;--color-cta-light: #fff7ed;--color-bg: #ffffff;--color-bg-page: #fafafa;--color-bg-subtle: #f5f5f5;--color-bg-muted: #e5e7eb;--color-bg-elevated: #ffffff;--color-surface: #ffffff;--color-surface-raised: #ffffff;--color-section-alt-bg: #fafafa;--color-text: #111827;--color-text-secondary: #374151;--color-text-muted: #6b7280;--color-text-caption: #9ca3af;--color-border: #e5e7eb;--color-border-light: #f3f4f6;--color-success: #15803d;--color-success-surface: #f0fdf4;--color-success-border: #bbf7d0;--color-success-dark: #166534;--color-error: #dc2626;--color-error-surface: #fef2f2;--color-error-border: #fecaca;--color-error-strong: #b91c1c;--color-warning: #d97706;--color-warning-surface: #fffbeb;--quiz-correct: #15803d;--quiz-correct-surface: #f0fdf4;--quiz-correct-border: #bbf7d0;--quiz-wrong: #b91c1c;--quiz-wrong-surface: #fef2f2;--quiz-wrong-border: #fecaca;--quiz-bg-workspace: #f0f9f8;--color-link-on-dark: #a5b4fc;--color-link-on-dark-hover: #c7d2fe;--quiz-navy: var(--color-primary-dark);--quiz-navy-hover: var(--color-primary-dark-hover);--quiz-navy-light: var(--color-primary-dark-light);--quiz-accent: var(--color-primary);--quiz-accent-hover: var(--color-primary-hover);--quiz-accent-light: var(--color-primary-light);--quiz-success: var(--color-success);--quiz-success-light: var(--color-success-surface);--quiz-warning: var(--color-warning);--accent-blue: var(--color-primary);--hero-gradient: var(--gradient-brand);--section-alt-bg: var(--color-section-alt-bg);--color-success-vivid: var(--color-success);--color-success-soft: var(--color-success);--color-success-surface-alt: var(--color-success-surface);--color-success-border-strong: var(--color-success-border);--color-error-border-strong: var(--color-error-border);--color-success-surface-strong: var(--color-success-surface);--color-error-surface-strong: var(--color-error-surface);--gradient-brand: linear-gradient(135deg, #4f46e5, #4338ca);--gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 50%, #3730a3 100%);--container-max: 1400px;--container-content: 960px;--container-narrow: 720px;--content-max: var(--container-content);--container-wide: 1600px;--measure-reading: 70ch;--space-0-5: .125rem;--space-1: .25rem;--space-1-5: .375rem;--space-2: .5rem;--space-2-5: .625rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.5rem;--space-6: 2rem;--space-7: 2.5rem;--space-8: 3rem;--space-9: 4rem;--space-10: 5rem;--space-11: 6rem;--space-12: 7.5rem;--card-padding: var(--space-5);--card-padding-compact: var(--space-4);--card-gap: var(--space-5);--section-padding-y: clamp(var(--space-8), 8vw, var(--space-10));--section-padding-x: clamp(var(--space-4), 4vw, var(--space-6));--hero-padding-y: clamp(var(--space-10), 10vw, var(--space-12));--font-sans: system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji";--text-xs: clamp(.75rem, .725rem + .125vw, .8125rem);--text-sm: clamp(.875rem, .85rem + .125vw, .9375rem);--text-base: clamp(1rem, .975rem + .125vw, 1.0625rem);--text-lg: clamp(1.125rem, 1.05rem + .375vw, 1.3125rem);--text-xl: clamp(1.25rem, 1.1rem + .75vw, 1.625rem);--text-2xl: clamp(1.5rem, 1.25rem + 1.25vw, 2rem);--text-3xl: clamp(1.875rem, 1.5rem + 1.875vw, 2.625rem);--text-display: clamp(2.25rem, 1.75rem + 2.5vw, 3.25rem);--line-height-tight: 1.15;--line-height-heading: 1.25;--line-height-subhead: 1.35;--line-height-body: 1.6;--line-height-relaxed: 1.75;--tracking-tight: -.025em;--tracking-normal: 0;--tracking-caps: .08em;--radius-xs: 4px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 24px;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .05);--shadow-sm: 0 1px 3px rgba(0, 0, 0, .06);--shadow-card: 0 1px 2px rgba(0, 0, 0, .04), 0 2px 8px rgba(0, 0, 0, .04);--shadow-card-hover: 0 2px 4px rgba(0, 0, 0, .04), 0 8px 24px rgba(0, 0, 0, .08);--shadow-md: 0 4px 12px rgba(0, 0, 0, .08);--shadow-lg: 0 8px 24px rgba(0, 0, 0, .1), 0 2px 8px rgba(0, 0, 0, .04);--shadow-xl: 0 12px 40px rgba(0, 0, 0, .12), 0 4px 12px rgba(0, 0, 0, .04);--ease-out: cubic-bezier(.16, 1, .3, 1);--ease-in-out: cubic-bezier(.4, 0, .2, 1);--transition-fast: .15s var(--ease-out);--transition-normal: .25s var(--ease-out);--transition-slow: .4s var(--ease-out);--target-min-touch: 48px;--z-base: 1;--z-sticky: 100;--z-overlay: 200;--z-modal: 1000;--section-space-y: var(--section-padding-y);--section-space-x: var(--section-padding-x)}*,*:before,*:after{box-sizing:border-box}html{height:100%}body{margin:0;font-family:var(--font-sans);font-size:var(--text-base);color:var(--color-text);background:var(--color-bg);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;text-rendering:optimizeSpeed;line-height:var(--line-height-body)}h1,h2,h3,h4,h5,h6{line-height:var(--line-height-heading);letter-spacing:-.02em}p,li{line-height:var(--line-height-body)}.reading-measure{max-width:var(--measure-reading)}img{max-width:100%;height:auto}a{color:var(--color-primary);text-decoration:none}a:hover{text-decoration:underline}.skip-link{position:absolute;top:-100%;left:var(--space-4);z-index:var(--z-overlay);padding:var(--space-3) var(--space-5);background:var(--quiz-navy);color:#fff;font-size:var(--text-sm);font-weight:600;border-radius:0 0 var(--radius-sm) var(--radius-sm);text-decoration:none;transition:top var(--transition-fast)}.skip-link:focus{top:0;outline:2px solid var(--quiz-accent);outline-offset:2px}.container{max-width:var(--container-max);margin-inline:auto;padding-inline:var(--section-padding-x)}.container--narrow{max-width:var(--container-content)}.container--reading{max-width:var(--container-narrow)}.section{padding-block:var(--section-padding-y)}.section--alt{background:var(--color-section-alt-bg)}.section--dark{background:var(--gradient-dark);color:#fff}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--space-2);min-height:var(--target-min-touch);padding:12px 28px;font-family:inherit;font-size:var(--text-base);font-weight:600;line-height:1.5;text-decoration:none;border:1px solid transparent;border-radius:var(--radius-sm);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast)}.btn:hover{text-decoration:none}.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.btn--primary{background:var(--color-cta);color:#fff}.btn--primary:hover{background:var(--color-cta-hover);box-shadow:0 1px 3px #0000001f}.btn--secondary{background:transparent;color:var(--color-primary);border-color:var(--color-border)}.btn--secondary:hover{background:var(--color-primary-50);border-color:var(--color-primary)}.btn--cta{background:var(--color-primary);color:#fff}.btn--cta:hover{background:var(--color-primary-hover);box-shadow:0 1px 3px #0000001f}.btn--lg{padding:16px 36px;font-size:var(--text-lg)}.card{background:var(--color-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card)}.card--interactive{text-decoration:none;color:var(--color-text);transition:box-shadow .2s var(--ease-in-out),transform .2s var(--ease-in-out)}.card--interactive:hover{box-shadow:var(--shadow-card-hover);transform:translateY(-3px);text-decoration:none}.card__media{aspect-ratio:3 / 2;background-size:cover;background-position:center;background-color:var(--color-bg-subtle)}.card__title{font-size:var(--text-lg);font-weight:600;line-height:var(--line-height-subhead);margin:0 0 var(--space-2)}.card__meta{font-size:var(--text-sm);color:var(--color-text-muted);display:flex;gap:var(--space-3)}.site-header{position:sticky;top:0;z-index:var(--z-sticky);background:var(--gradient-brand);min-height:56px;display:flex;align-items:center;justify-content:center}.site-header-inner{position:relative;width:100%;max-width:var(--container-max);padding:0 var(--space-4);display:flex;align-items:center;justify-content:space-between}.site-logo{display:flex;align-items:center;gap:var(--space-3);min-height:calc(var(--space-6) + var(--space-4))}.site-logo img{height:26px;width:auto}.site-logo-wordmark{font-family:var(--font-sans);font-weight:700;font-size:1.25rem;letter-spacing:.01em;color:#fff;line-height:var(--line-height-tight)}.site-menu-toggle{background:none;border:none;cursor:pointer;padding:var(--space-2);min-width:var(--target-min-touch);min-height:var(--target-min-touch);display:flex;align-items:center;justify-content:center;list-style:none}.site-menu-toggle::-webkit-details-marker{display:none}.site-menu-toggle svg{fill:#fff}.site-menu{position:relative}.site-menu:not([open]) .site-dropdown-menu{max-height:0;opacity:0;visibility:hidden;overflow:hidden}.site-menu[open] .site-dropdown-menu{max-height:calc(100vh - 80px);overflow-y:auto;overflow-x:hidden;opacity:1;visibility:visible}.site-dropdown-menu{position:absolute;top:calc(var(--space-6) + var(--space-4));right:0;width:min(360px,calc(100vw - 16px));z-index:var(--z-sticky);max-height:0;overflow:hidden;opacity:0;visibility:hidden;transition:max-height .25s ease-out,opacity .2s ease-out,visibility 0s .25s;background:var(--color-surface);border-radius:0 0 var(--radius-md) var(--radius-md);display:flex;flex-direction:column;box-shadow:var(--shadow-md)}.site-dropdown-menu a{display:block;padding:14px var(--space-5);color:var(--color-text);border-bottom:1px solid var(--color-border-light);font-size:var(--text-sm);font-weight:500}.site-dropdown-menu a:last-child{border-bottom:none}.site-dropdown-menu a:hover{background:var(--color-bg-subtle);text-decoration:none}#main{background:var(--color-bg-page)}.category-nav{display:flex;gap:var(--space-2);margin-bottom:var(--space-5);overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;padding-bottom:var(--space-1)}.category-nav::-webkit-scrollbar{display:none}.category-nav-link{display:inline-flex;align-items:center;gap:var(--space-1);padding:var(--space-2) var(--space-4);min-height:44px;border-radius:var(--radius-full);font-size:var(--text-sm);color:var(--color-text-secondary);background:var(--color-bg-subtle);border:1px solid var(--color-border);text-decoration:none;white-space:nowrap;flex-shrink:0;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.category-nav-link:hover{background:var(--color-bg-muted);text-decoration:none}.category-nav-link--active{background:var(--color-primary);color:#fff;border-color:var(--color-primary)}.category-nav-count{font-size:var(--text-xs);color:var(--color-text-muted);opacity:1}.category-nav-link--active .category-nav-count{color:#fffffff2}.category-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:var(--card-gap)}.pagination{display:flex;justify-content:center;gap:var(--space-1);margin-top:var(--space-6)}.pagination-link{display:inline-flex;align-items:center;justify-content:center;min-width:44px;height:44px;padding:0 var(--space-2);border-radius:var(--radius-sm);font-size:var(--text-sm);color:var(--color-text-secondary);text-decoration:none;transition:background var(--transition-fast)}.pagination-link:hover{background:var(--color-bg-muted);text-decoration:none}.pagination-link--active{background:var(--color-primary);color:#fff;font-weight:600}.quiz-player{background:transparent}.quiz-inline-questions{padding:var(--space-5);display:flex;flex-direction:column;gap:var(--space-6)}.quiz-question-card{background:#fff;border:none;border-radius:var(--radius-md);box-shadow:none;padding:var(--space-6)}@media(max-width:40rem){.quiz-inline-questions{padding:var(--space-3) 0;gap:var(--space-4);margin-inline:calc(-1 * var(--section-padding-x))}.quiz-question-card{padding:var(--space-3);border-radius:0;box-shadow:none}.quiz-options,.quiz-ord-list,.quiz-tf-options{padding-left:0}.quiz-option{font-size:var(--text-sm);padding:var(--space-2-5) var(--space-3);gap:var(--space-2-5)}.quiz-option-letter{width:28px;height:28px;font-size:var(--text-xs)}.quiz-explanation-short{font-size:var(--text-sm)}}.quiz-question-header{display:flex;gap:var(--space-3);align-items:baseline;margin-bottom:var(--space-5)}.quiz-question-number{font-size:var(--text-xs);font-weight:500;color:var(--color-text-muted);flex-shrink:0;font-variant-numeric:tabular-nums}.quiz-question-text{font-size:var(--text-lg);font-weight:600;line-height:1.65;color:var(--color-text);max-width:80ch}.quiz-options{display:flex;flex-direction:column;gap:var(--space-2);padding-left:var(--space-5)}.quiz-option{display:flex;align-items:center;gap:var(--space-3);width:100%;padding:var(--space-3) 14px;min-height:48px;background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:pointer;text-align:left;font-size:var(--text-sm);line-height:1.5;color:var(--color-text);transition:border-color .2s ease,background .2s ease,box-shadow .2s ease,transform .15s ease}.quiz-option:hover{border-color:var(--quiz-accent);box-shadow:var(--shadow-sm)}.quiz-option:active{transform:scale(.98)}.quiz-option:focus-visible{outline:2px solid var(--quiz-accent);outline-offset:2px}.quiz-option--selected{border-color:var(--quiz-accent);background:var(--quiz-accent-light)}.quiz-option-letter{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-full);background:var(--color-bg-subtle);border:2px solid var(--color-border);font-size:var(--text-sm);font-weight:700;flex-shrink:0;font-variant-numeric:tabular-nums;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.quiz-option--selected .quiz-option-letter{background:var(--quiz-accent);border-color:var(--quiz-accent);color:#fff;transition:background .2s ease,border-color .2s ease}.quiz-option-label{flex:1;word-break:break-word;overflow-wrap:anywhere}.quiz-option--compact{font-size:var(--text-xs);padding:var(--space-2) var(--space-3);min-height:40px}.quiz-option--correct{border-color:var(--quiz-correct-border);background:var(--quiz-correct-surface);pointer-events:none;transition:border-color .2s ease,background .2s ease}.quiz-option--correct .quiz-option-letter{background:var(--quiz-correct);border-color:var(--quiz-correct);color:#fff}.quiz-option--wrong{border-color:var(--quiz-wrong-border);background:var(--quiz-wrong-surface);pointer-events:none;transition:border-color .2s ease,background .2s ease}.quiz-option--wrong .quiz-option-letter{background:var(--quiz-wrong);border-color:var(--quiz-wrong);color:#fff}.quiz-fullscreen .quiz-option--correct,.quiz-fullscreen .quiz-option--wrong,.quiz-fullscreen .quiz-tf-btn--correct,.quiz-fullscreen .quiz-tf-btn--wrong,.quiz-fullscreen .quiz-ord-item--correct,.quiz-fullscreen .quiz-ord-item--wrong{transition:border-color .2s ease,background .2s ease}.quiz-explanation{margin-top:var(--space-3);padding:var(--space-4) var(--space-5);border-radius:10px;font-size:var(--text-sm);line-height:1.7;border:none;max-width:640px;animation:explFadeIn .3s ease}@keyframes explFadeIn{0%{opacity:0;transform:translateY(4px)}to{opacity:1;transform:translateY(0)}}.quiz-explanation--correct{background:var(--quiz-correct-surface);border-left:3px solid var(--quiz-correct)}.quiz-explanation--wrong{background:var(--quiz-wrong-surface);border-left:3px solid var(--quiz-wrong)}.quiz-explanation-header{display:flex;align-items:center;gap:var(--space-1-5);margin-bottom:6px}.quiz-explanation-verdict{font-size:var(--text-sm);font-weight:700;line-height:1.5}.quiz-explanation--correct .quiz-explanation-header{color:var(--quiz-correct)}.quiz-explanation--wrong .quiz-explanation-header{color:var(--quiz-wrong)}.quiz-explanation-icon{display:flex}.quiz-explanation-short{margin:0;color:var(--color-text-secondary);line-height:1.6}.quiz-explanation-toggle{margin-top:8px;padding:4px 0;border:none;background:none;color:var(--quiz-navy);font-size:var(--text-sm);font-weight:600;cursor:pointer;font-family:inherit;min-height:36px;display:inline-flex;align-items:center}.quiz-explanation-toggle:hover{text-decoration:underline}.quiz-explanation-deep{margin:6px 0 0;color:var(--color-text-secondary);font-size:var(--text-sm);line-height:1.7}.review-explanation{margin-top:var(--space-3);padding-top:var(--space-3);border-top:1px solid var(--color-border)}.review-explanation-text{margin:0;font-size:var(--text-sm);line-height:1.7;color:var(--color-text-secondary)}kbd{display:inline-block;padding:2px 6px;font-size:var(--text-xs);font-family:var(--font-sans);background:var(--color-bg-muted);border:1px solid var(--color-border);border-radius:4px;box-shadow:0 1px 0 var(--color-border)}.quiz-empty{padding:40px;text-align:center;color:var(--color-text-muted)}.quiz-fullscreen{position:fixed;inset:0;z-index:var(--z-overlay);background:var(--color-surface);display:flex;flex-direction:column;animation:fsSlideUp .5s cubic-bezier(.16,1,.3,1)}@keyframes fsSlideUp{0%{opacity:0;transform:translateY(20px) scale(.98)}to{opacity:1;transform:translateY(0) scale(1)}}.quiz-fs-progress{height:3px;background:var(--color-border-light);flex-shrink:0}.quiz-fs-progress-fill{height:100%;background:var(--color-primary);transition:width .8s cubic-bezier(.16,1,.3,1)}.quiz-fs-toolbar{display:flex;justify-content:center;align-items:center;padding:6px var(--space-4);border-bottom:none;background:transparent;flex-shrink:0;position:relative}.quiz-fs-toolbar .quiz-fs-toolbar-actions{position:absolute;right:var(--space-4);top:50%;transform:translateY(-50%)}.quiz-fs-status{font-size:var(--text-sm);color:var(--color-text-muted)}.quiz-fs-status strong{color:var(--quiz-navy);font-weight:700}.quiz-fs-close{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border:none;background:none;color:var(--color-text-muted);cursor:pointer;border-radius:var(--radius-sm);transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast)}.quiz-fs-close:hover{background:var(--color-bg-muted);color:var(--color-text)}.quiz-fs-body{flex:1;min-height:0;display:flex;flex-direction:column;overflow:hidden;position:relative}.quiz-fs-content{padding:var(--space-6) var(--space-5);display:flex;flex-direction:column;gap:var(--space-5);max-width:800px;margin:0 auto}.quiz-fs-carousel{flex:1;position:relative;overflow:hidden;display:flex;flex-direction:column}.quiz-fs-slide{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;overflow-y:auto;-webkit-overflow-scrolling:touch;will-change:transform,opacity}.quiz-fs-slide--active{position:relative;flex:1;min-height:0}.quiz-fs-slide-inner{width:100%;max-width:720px;padding:var(--space-5);margin:0 auto}@media(max-width:40rem){.quiz-fs-slide{align-items:flex-start}.quiz-fs-slide-inner{padding:var(--space-4)}.quiz-fullscreen .quiz-question-card{padding:0}.quiz-fullscreen .quiz-options,.quiz-fullscreen .quiz-ord-list,.quiz-fullscreen .quiz-tf-options{padding-left:0}.quiz-fullscreen .quiz-question-header{margin-bottom:var(--space-3)}}.quiz-fs-slide--enter-left{animation:slideEnterDown .55s cubic-bezier(.16,1,.3,1) forwards}@keyframes slideEnterDown{0%{transform:translateY(60px);opacity:0}to{transform:translateY(0);opacity:1}}.quiz-fs-slide--enter-right{animation:slideEnterUp .55s cubic-bezier(.16,1,.3,1) forwards}@keyframes slideEnterUp{0%{transform:translateY(-60px);opacity:0}to{transform:translateY(0);opacity:1}}.quiz-fs-slide--exit-left{animation:slideExitUp .45s cubic-bezier(.4,0,.2,1) forwards}@keyframes slideExitUp{0%{transform:translateY(0);opacity:1}to{transform:translateY(-40px);opacity:0}}.quiz-fs-slide--exit-right{animation:slideExitDown .45s cubic-bezier(.4,0,.2,1) forwards}@keyframes slideExitDown{0%{transform:translateY(0);opacity:1}to{transform:translateY(40px);opacity:0}}.quiz-fs-nav-arrows{display:flex;align-items:center;justify-content:center;gap:var(--space-4);padding:var(--space-4) var(--space-5);flex-shrink:0;background:transparent}.quiz-fs-arrow{display:flex;align-items:center;justify-content:center;width:44px;height:44px;border-radius:50%;border:1px solid var(--color-border-light);background:var(--color-surface);color:var(--color-text-secondary);cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease;flex-shrink:0}.quiz-fs-arrow:hover:not(:disabled){border-color:var(--quiz-navy);color:var(--quiz-navy);box-shadow:0 2px 8px #00000014}.quiz-fs-arrow:disabled{opacity:.3;cursor:not-allowed}.quiz-fs-dots{display:flex;align-items:center;gap:var(--space-1-5);flex-wrap:wrap;justify-content:center;max-width:400px}.quiz-fs-dot{width:10px;height:10px;border-radius:var(--radius-full);border:2px solid var(--color-border);background:transparent;padding:8px;box-sizing:content-box;margin:0 -2px;cursor:pointer;transition:background .25s ease,border-color .25s ease,width .3s var(--ease-out),transform .25s ease;flex-shrink:0}.quiz-fs-dot--active{border-color:var(--quiz-navy);background:var(--quiz-navy);width:24px}.quiz-fs-dot--answered:not(.quiz-fs-dot--active){border-color:var(--quiz-accent);background:var(--quiz-accent)}.quiz-fs-dot:hover:not(:disabled){border-color:var(--quiz-navy)}.quiz-fs-toolbar-actions{display:flex;align-items:center;gap:var(--space-2)}.quiz-fs-finish{padding:var(--space-2) var(--space-4);min-height:44px;background:none;border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);display:inline-flex;align-items:center}.quiz-fs-finish:hover{background:var(--color-bg-muted);border-color:var(--quiz-navy);color:var(--quiz-navy)}.quiz-fs-submit-section{text-align:center;padding:var(--space-6);margin-top:var(--space-3);background:var(--color-surface);border-radius:var(--radius-md);border:1px dashed var(--color-border);max-width:760px;width:100%}.quiz-fs-submit-info{margin-bottom:var(--space-4)}.quiz-fs-submit-count{display:block;font-size:var(--text-sm);font-weight:600;color:var(--color-text);margin-bottom:var(--space-1)}.quiz-fs-submit-warning{display:block;font-size:var(--text-sm);color:var(--quiz-warning);line-height:1.5}.quiz-fs-submit-btn{display:inline-block;padding:14px var(--space-7);background:var(--quiz-navy);color:#fff;font-size:var(--text-base);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),transform var(--transition-fast)}.quiz-fs-submit-btn:hover{background:var(--quiz-navy-hover);transform:translateY(-1px)}.quiz-fs-nav{width:220px;flex-shrink:0;padding:var(--space-5) 20px;background:var(--color-surface);border-left:1px solid var(--color-border);position:sticky;top:0;align-self:flex-start}.quiz-fs-nav-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4)}.quiz-fs-nav-title{font-size:var(--text-xs);font-weight:700;color:var(--color-text);margin:0;text-transform:uppercase;letter-spacing:.5px;line-height:1.5}.quiz-fs-nav-count{font-size:var(--text-sm);font-weight:600;color:var(--quiz-accent);font-variant-numeric:tabular-nums}.quiz-fs-nav-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-1-5);margin-bottom:var(--space-4)}.quiz-fs-nav-item{display:flex;align-items:center;justify-content:center;height:44px;border-radius:var(--radius-sm);border:1px solid var(--color-border);background:var(--color-bg-subtle);cursor:pointer;font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);font-variant-numeric:tabular-nums}.quiz-fs-nav-item:hover{border-color:var(--quiz-accent);color:var(--quiz-accent)}.quiz-fs-nav-item--answered{background:var(--quiz-navy);border-color:var(--quiz-navy);color:#fff}.quiz-fs-nav-item--answered:hover{background:var(--quiz-navy-hover);border-color:var(--quiz-navy-hover);color:#fff}.quiz-fs-nav-legend{display:flex;flex-direction:column;gap:var(--space-1-5);margin-bottom:20px;padding-top:var(--space-3);border-top:1px solid var(--color-border)}.quiz-fs-nav-legend-item{display:flex;align-items:center;gap:var(--space-2);font-size:var(--text-xs);color:var(--color-text-muted);line-height:1.5}.quiz-fs-nav-dot{width:10px;height:10px;border-radius:2px;flex-shrink:0}.quiz-fs-nav-dot--answered{background:var(--quiz-navy)}.quiz-fs-nav-dot--unanswered{background:var(--color-bg-subtle);border:1px solid var(--color-border)}.quiz-fs-nav-submit{display:block;width:100%;padding:var(--space-2-5) var(--space-4);background:var(--quiz-navy);color:#fff;font-size:var(--text-sm);font-weight:600;border:none;border-radius:var(--radius-md);cursor:pointer;transition:background var(--transition-fast),transform var(--transition-fast)}.quiz-fs-nav-submit:hover{background:var(--quiz-navy-hover);transform:translateY(-1px)}.quiz-fs-results{flex:1;min-height:0;overflow-y:auto;position:relative;background:var(--color-bg-page);-webkit-overflow-scrolling:touch;padding:40px var(--space-5)}@media(max-width:40rem){.quiz-fs-results{padding:var(--space-5) var(--space-3)}}.quiz-fs-close--results{position:absolute;top:var(--space-4);right:var(--space-4);z-index:var(--z-base)}.quiz-fs-slide-inner:has(.feedback-inline) .quiz-question-card{border-bottom-left-radius:0;border-bottom-right-radius:0;border-bottom-color:transparent}.feedback-inline{background:var(--color-bg, #fff);border:none;box-shadow:var(--shadow-sm);border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);padding:0 var(--space-5) var(--space-5);animation:feedbackFadeIn .3s ease}.feedback-inline--closing{animation:feedbackFadeOut .15s ease forwards}.quiz-fullscreen .feedback-inline{position:fixed;bottom:0;left:0;right:0;z-index:var(--z-base);border-radius:var(--radius-lg) var(--radius-lg) 0 0;box-shadow:0 -4px 24px #0000001a;padding:var(--space-4) var(--space-5) max(var(--space-5),env(safe-area-inset-bottom));max-height:60vh;overflow-y:auto;animation:feedbackSlideUp .45s cubic-bezier(.16,1,.3,1)}.quiz-fullscreen .feedback-inline--closing{animation:feedbackSlideDown .25s cubic-bezier(.4,0,1,1) forwards}.quiz-fullscreen .feedback-inline .feedback-inline-divider{display:none}.quiz-fullscreen .quiz-fs-slide-inner:has(.feedback-inline) .quiz-question-card{border-bottom-left-radius:var(--radius-md);border-bottom-right-radius:var(--radius-md);border-bottom-color:var(--color-border)}@keyframes feedbackSlideUp{0%{transform:translateY(100%);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes feedbackSlideDown{0%{transform:translateY(0);opacity:1}to{transform:translateY(100%);opacity:0}}.feedback-inline-divider{height:1px;background:var(--color-border);margin-bottom:var(--space-4)}.feedback-inline--correct .feedback-inline-divider{background:var(--quiz-correct-border)}.feedback-inline--wrong .feedback-inline-divider{background:var(--quiz-wrong-border)}.feedback-sheet-header{display:flex;align-items:center;gap:var(--space-2-5);margin-bottom:var(--space-2-5)}.feedback-inline--correct .feedback-sheet-header{color:var(--quiz-correct)}.feedback-inline--wrong .feedback-sheet-header{color:var(--quiz-wrong)}.feedback-sheet-icon{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:50%}.feedback-inline--correct .feedback-sheet-icon{background:var(--quiz-correct-surface)}.feedback-inline--wrong .feedback-sheet-icon{background:var(--quiz-wrong-surface)}.feedback-sheet-verdict{font-size:1rem;font-weight:700;letter-spacing:-.01em}.feedback-sheet-explanation{margin:0 0 var(--space-1);color:var(--color-text-secondary, #555);font-size:var(--text-sm);line-height:1.65}.feedback-sheet-deep-toggle{background:none;border:none;padding:var(--space-1) 0;font-size:var(--text-sm);font-weight:600;cursor:pointer;color:var(--color-text-tertiary, #888);display:flex;align-items:center;gap:var(--space-1)}.feedback-sheet-deep-toggle:hover{text-decoration:underline}.feedback-sheet-deep{margin:var(--space-2) 0 0;color:var(--color-text-secondary, #555);font-size:var(--text-sm);line-height:1.6}.feedback-sheet-continue{display:block;width:100%;margin-top:18px;padding:14px var(--space-5);border:none;border-radius:var(--radius-sm);font-size:var(--text-base);font-weight:700;letter-spacing:.01em;cursor:pointer;color:#fff;transition:opacity .15s,transform .1s}.feedback-sheet-continue:hover{opacity:.92}.feedback-sheet-continue:active{transform:scale(.98)}.feedback-sheet-continue:focus-visible{outline:2px solid currentColor;outline-offset:2px}.feedback-sheet-continue--correct{background:var(--quiz-correct)}.feedback-sheet-continue--wrong{background:var(--quiz-wrong)}@keyframes feedbackFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes feedbackFadeOut{0%{opacity:1;transform:translateY(0)}to{opacity:0;transform:translateY(8px)}}@media(max-width:40rem){.quiz-fullscreen .feedback-inline{padding:var(--space-3) var(--space-4) max(var(--space-4),env(safe-area-inset-bottom))}.feedback-sheet-continue{min-height:52px;font-size:var(--text-base);width:100%}}@keyframes answerShake{0%,to{transform:translate(0)}20%,60%{transform:translate(-4px)}40%,80%{transform:translate(4px)}}.quiz-option--wrong-shake{animation:answerShake .4s ease}.quiz-results{max-width:720px;margin:0 auto;padding:var(--space-7) var(--space-6);background:#fff;border:none;border-radius:var(--radius-lg);box-shadow:none}.results-section{opacity:0;transform:translateY(18px);transition:opacity .5s var(--ease-out),transform .5s var(--ease-out)}.results-section--visible{opacity:1;transform:translateY(0)}@media(prefers-reduced-motion:reduce){.results-section{opacity:1;transform:none;transition:none}}.results-header{text-align:center;margin-bottom:36px}.results-title{font-size:var(--text-2xl);font-weight:700;color:var(--color-text);margin:var(--space-3) 0 var(--space-2);line-height:1.3}.results-subtitle{font-size:var(--text-base);color:var(--color-text-muted);margin:0 auto;max-width:52ch;line-height:var(--line-height-body)}.score-badge{display:inline-block;padding:var(--space-1-5) var(--space-4);border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:700;letter-spacing:1px;width:fit-content;line-height:1.5}.score-badge--pass{background:var(--quiz-correct-surface);color:var(--quiz-correct)}.score-badge--fail{background:var(--quiz-wrong-surface);color:var(--quiz-wrong)}.score-hero{display:flex;justify-content:center;margin-bottom:var(--space-6)}.score-ring{position:relative;width:148px;height:148px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.score-ring-bg{position:absolute;inset:0;border-radius:50%;background:conic-gradient(var(--ring-color, var(--quiz-accent)) calc(var(--score-pct, 0) * 1%),var(--color-border-light) 0);-webkit-mask:radial-gradient(farthest-side,transparent calc(100% - 14px),#fff calc(100% - 13px));mask:radial-gradient(farthest-side,transparent calc(100% - 14px),#fff calc(100% - 13px))}.score-ring-inner{position:relative;z-index:var(--z-base);display:flex;flex-direction:column;align-items:center}.score-ring-pct{font-size:40px;font-weight:700;color:var(--color-text);line-height:1;font-variant-numeric:tabular-nums}.score-ring-label{font-size:var(--text-xs);color:var(--color-text-muted);margin-top:var(--space-1-5);font-weight:600;text-transform:uppercase;letter-spacing:.5px;line-height:1.5}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--space-3);margin-bottom:36px}.stat-card{display:flex;flex-direction:column;align-items:center;gap:var(--space-1-5);padding:20px var(--space-2-5);background:#fff;border-radius:var(--radius-md);border:1px solid var(--color-border);box-shadow:var(--shadow-xs)}.stat-value{font-size:26px;font-weight:700;font-variant-numeric:tabular-nums;line-height:1.1}.stat-value--correct{color:var(--quiz-correct)}.stat-value--wrong{color:var(--quiz-wrong)}.stat-value--skipped{color:var(--color-text-muted)}.stat-value--time{color:var(--quiz-navy)}.stat-label{font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);text-transform:uppercase;letter-spacing:.3px;line-height:1.5}@media(max-width:31.25rem){.stats-grid{grid-template-columns:repeat(2,1fr)}}.score-categories{margin-bottom:36px;padding:var(--space-5);background:var(--color-bg-subtle);border-radius:var(--radius-md);border:1px solid var(--color-border-light)}.score-categories-title{font-size:17px;font-weight:700;color:var(--color-text);margin:0 0 var(--space-5)}.score-categories-list{display:flex;flex-direction:column;gap:var(--space-4)}.score-category-row{display:flex;align-items:center;gap:var(--space-3)}.score-category-name{width:150px;font-size:var(--text-sm);font-weight:500;color:var(--color-text-secondary);flex-shrink:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.score-category-bar-track{flex:1;height:10px;background:var(--color-bg-muted);border-radius:var(--radius-full);overflow:hidden}.score-category-bar-fill{height:100%;border-radius:var(--radius-full);transition:width .8s var(--ease-out)}@media(prefers-reduced-motion:reduce){.score-category-bar-fill{transition:none}}.score-category-pct{width:40px;text-align:right;font-size:var(--text-sm);font-weight:700;color:var(--color-text);font-variant-numeric:tabular-nums}.score-category-value{width:48px;text-align:right;font-size:var(--text-sm);font-weight:500;color:var(--color-text-muted);font-variant-numeric:tabular-nums}@media(max-width:31.25rem){.score-category-name{width:100px;font-size:var(--text-xs)}.score-category-pct{width:30px;font-size:var(--text-xs)}.score-category-value{display:none}}.question-review{margin-bottom:36px}.question-review-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-4);flex-wrap:wrap;gap:var(--space-2-5)}.question-review-title{font-size:17px;font-weight:700;color:var(--color-text);margin:0}.review-filters{display:flex;gap:var(--space-1);background:var(--color-bg-muted);border-radius:var(--radius-sm);padding:2px}.review-filter-btn{padding:var(--space-2) var(--space-3);min-height:44px;border:none;background:none;font-size:var(--text-sm);font-weight:600;color:var(--color-text-muted);border-radius:4px;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);font-family:inherit;display:inline-flex;align-items:center}.review-filter-btn--active{background:var(--color-surface);color:var(--color-text);box-shadow:var(--shadow-sm)}.review-filter-btn:hover:not(.review-filter-btn--active){color:var(--color-text-secondary)}.question-review-list{display:flex;flex-direction:column;gap:var(--space-2-5)}.question-review-item{border-radius:var(--radius-md);border:1px solid var(--color-border);overflow:hidden;transition:box-shadow var(--transition-fast)}.question-review-item:hover{box-shadow:var(--shadow-sm)}.question-review-item--correct{border-color:var(--quiz-correct-border)}.question-review-item--wrong{border-color:var(--quiz-wrong-border)}.question-review-summary{display:flex;align-items:center;gap:var(--space-3);padding:14px var(--space-4);width:100%;border:none;background:none;cursor:pointer;text-align:left;font-size:var(--text-sm);line-height:1.5;font-family:inherit}.question-review-item--correct .question-review-summary{background:var(--quiz-correct-surface)}.question-review-item--wrong .question-review-summary{background:var(--quiz-wrong-surface)}.question-review-item--skipped .question-review-summary{background:var(--color-surface)}.question-review-icon{flex-shrink:0;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center}.question-review-item--correct .question-review-icon{background:var(--quiz-correct-surface);color:var(--quiz-correct)}.question-review-item--wrong .question-review-icon{background:var(--quiz-wrong-surface);color:var(--quiz-wrong)}.question-review-item--skipped .question-review-icon{background:var(--color-bg-muted);color:var(--color-text-muted)}.question-review-num{flex-shrink:0;font-size:var(--text-sm);font-weight:600;color:var(--color-text-muted);font-variant-numeric:tabular-nums;min-width:24px}.question-review-text{flex:1;min-width:0;font-size:var(--text-sm);color:var(--color-text-secondary);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.question-review-status{flex-shrink:0;font-size:var(--text-xs);font-weight:700;text-transform:uppercase;letter-spacing:.04em;line-height:1.5}.question-review-item--correct .question-review-status{color:var(--quiz-correct)}.question-review-item--wrong .question-review-status{color:var(--quiz-wrong)}.question-review-item--skipped .question-review-status{color:var(--color-text-muted)}.review-chevron{flex-shrink:0;color:var(--color-text-muted);transition:transform .25s var(--ease-out)}.review-chevron--open{transform:rotate(180deg)}.question-review-detail{display:grid;grid-template-rows:0fr;transition:grid-template-rows .3s var(--ease-out)}.question-review-detail--open{grid-template-rows:1fr}.question-review-detail-inner{overflow:hidden}@media(prefers-reduced-motion:reduce){.question-review-detail,.review-chevron{transition:none}}.review-options{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-4) var(--space-4);border-top:1px solid var(--color-border-light);background:var(--color-surface)}.review-opt{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-2-5) 14px;border-radius:var(--radius-sm);font-size:var(--text-sm);line-height:1.5;background:var(--color-bg-subtle);border:1px solid transparent}.review-opt--correct{background:var(--quiz-correct-surface);border-color:var(--quiz-correct-border)}.review-opt--wrong{background:var(--quiz-wrong-surface);border-color:var(--quiz-wrong-border)}.review-opt-letter{width:32px;height:32px;border-radius:50%;background:var(--color-bg-muted);display:flex;align-items:center;justify-content:center;font-size:var(--text-sm);font-weight:700;color:var(--color-text-muted);flex-shrink:0}.review-opt--correct .review-opt-letter{background:var(--quiz-correct);color:#fff}.review-opt--wrong .review-opt-letter{background:var(--quiz-wrong);color:#fff}.review-opt-label{flex:1;min-width:0;font-size:var(--text-sm);color:var(--color-text-secondary);line-height:1.5}.review-opt-badge{flex-shrink:0;padding:3px var(--space-3);border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:700;letter-spacing:.3px;text-transform:uppercase;line-height:1.5}.review-opt-badge--correct{background:var(--quiz-correct-surface);color:var(--quiz-correct)}.review-opt-badge--wrong{background:var(--quiz-wrong-surface);color:var(--quiz-wrong)}.review-correct-answer{display:flex;align-items:center;gap:var(--space-2-5);padding:var(--space-3) var(--space-4);font-size:var(--text-sm);color:var(--quiz-correct);background:var(--quiz-correct-surface);border-top:1px solid var(--quiz-correct-border)}.review-correct-answer strong{color:var(--quiz-correct)}.review-opt--missed{border-left:3px solid var(--quiz-accent)}.review-opt-badge--missed{background:color-mix(in srgb,var(--quiz-accent) 12%,white);color:var(--quiz-accent)}.review-fill-blank{display:flex;flex-direction:column;gap:var(--space-2);padding:var(--space-2) 0}.review-fb-row{display:flex;align-items:baseline;gap:var(--space-2);font-size:var(--text-sm)}.review-fb-label{color:var(--color-text-muted);font-weight:600;flex-shrink:0}.review-fb-value{font-weight:500}.review-fb-value--correct{color:var(--quiz-correct)}.review-fb-value--wrong{color:var(--quiz-wrong)}.review-ordering{display:flex;flex-direction:column;gap:var(--space-3);padding:var(--space-2) 0}.review-ord-row{font-size:var(--text-sm)}.review-ord-label{display:block;color:var(--color-text-muted);font-weight:600;margin-bottom:var(--space-1-5)}.review-ord-list{margin:0;padding-left:var(--space-5)}.review-ord-list li{padding:2px 0}.review-ord-item--correct{color:var(--quiz-correct)}.review-ord-item--wrong{color:var(--quiz-wrong)}.quiz-fb-badge{display:inline-flex;align-items:center;padding:3px var(--space-2);font-size:var(--text-xs);font-weight:600;text-transform:uppercase;letter-spacing:.05em;line-height:1.5;border-radius:var(--radius-full);flex-shrink:0;background:var(--color-bg-muted);color:var(--color-text-muted)}.quiz-ms-hint{margin:calc(-1 * var(--space-2)) 0 14px 36px;padding:0;font-size:var(--text-xs);font-weight:500;color:var(--color-text-muted);font-style:italic;letter-spacing:.01em}.quiz-tf-options{display:flex;gap:var(--space-3);padding-left:var(--space-5)}.quiz-tf-btn{flex:1;display:flex;align-items:center;justify-content:center;gap:var(--space-2-5);padding:var(--space-3) var(--space-5);border:2px solid var(--color-border);border-radius:var(--radius-md);background:var(--color-bg);cursor:pointer;font-size:var(--text-base);font-weight:600;font-family:inherit;color:var(--color-text);transition:border-color var(--transition-fast),background var(--transition-fast),box-shadow var(--transition-fast)}.quiz-tf-btn:hover{border-color:var(--quiz-accent);box-shadow:var(--shadow-sm)}.quiz-tf-btn:focus-visible{outline:2px solid var(--quiz-accent);outline-offset:2px}.quiz-tf-btn--selected{border-color:var(--quiz-accent);background:var(--quiz-accent-light)}.quiz-tf-btn--correct{border-color:var(--quiz-correct-border);background:var(--quiz-correct-surface);pointer-events:none}.quiz-tf-btn--wrong{border-color:var(--quiz-wrong-border);background:var(--quiz-wrong-surface);pointer-events:none}.quiz-tf-icon{flex-shrink:0}.quiz-option-letter--checkbox{border-radius:6px}.quiz-option-letter--checked{background:var(--quiz-navy);border-color:var(--quiz-navy);color:#fff}.quiz-ms-submit,.quiz-fb-submit,.quiz-ord-submit{display:inline-flex;align-items:center;gap:var(--space-1-5);margin:14px 0 0 36px;padding:var(--space-2-5) 28px;border:1px solid var(--quiz-navy);border-radius:var(--radius-full);background:var(--quiz-navy);color:#fff;font-size:var(--text-sm);font-weight:600;font-family:inherit;cursor:pointer;transition:background .2s ease,color .2s ease,border-color .2s ease,box-shadow .2s ease,transform .2s ease}.quiz-ms-submit:hover,.quiz-fb-submit:hover,.quiz-ord-submit:hover{background:var(--quiz-navy-hover);transform:translateY(-1px);box-shadow:0 2px 8px #1e3a5f33}.quiz-fb-stem{padding-left:var(--space-5)}.quiz-fb-input-inline{display:inline-block;width:clamp(80px,18ch,280px);max-width:100%;padding:var(--space-1) var(--space-2-5);margin:0 var(--space-1);border:none;border-bottom:2px solid var(--quiz-accent);background:var(--quiz-accent-light);font-size:inherit;font-family:inherit;color:var(--color-text);outline:none;border-radius:0;vertical-align:baseline;transition:border-color var(--transition-fast)}.quiz-fb-input-inline:focus{border-bottom-color:var(--quiz-accent);background:color-mix(in srgb,var(--quiz-accent) 10%,white)}.quiz-fb-input{display:block;width:100%;max-width:400px;margin-top:var(--space-3);padding:var(--space-3) var(--space-4);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-sm);font-family:inherit;color:var(--color-text);background:var(--color-bg);transition:border-color var(--transition-fast)}.quiz-fb-input:focus{outline:none;border-color:var(--quiz-accent)}.quiz-fb-answer-inline{display:inline-block;padding:2px var(--space-2);margin:0 var(--space-1);border-radius:4px;font-weight:600}.quiz-fb-answer-inline--correct{background:var(--quiz-correct-surface);color:var(--quiz-correct);border-bottom:2px solid var(--quiz-correct)}.quiz-fb-answer-inline--wrong{background:var(--quiz-wrong-surface);color:var(--quiz-wrong);border-bottom:2px solid var(--quiz-wrong);text-decoration:line-through}.quiz-fb-answer{display:inline-block;margin-top:var(--space-3);padding:var(--space-2-5) var(--space-4);border-radius:var(--radius-md);font-weight:600;font-size:var(--text-sm)}.quiz-fb-answer--correct{background:var(--quiz-correct-surface);color:var(--quiz-correct);border:2px solid var(--quiz-correct)}.quiz-fb-answer--wrong{background:var(--quiz-wrong-surface);color:var(--quiz-wrong);border:2px solid var(--quiz-wrong);text-decoration:line-through}.quiz-fb-correct-answer{margin:var(--space-2) 0 0 var(--space-5);padding:var(--space-2) 14px;font-size:var(--text-sm);color:var(--quiz-correct);background:var(--quiz-correct-surface);border-radius:var(--radius-md);display:inline-block}.quiz-fb-correct-answer strong{color:var(--quiz-correct)}.quiz-ord-list{display:flex;flex-direction:column;gap:var(--space-1-5);padding-left:var(--space-5)}.quiz-ord-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-3);background:var(--color-bg);border:2px solid var(--color-border);border-radius:var(--radius-md);cursor:grab;-webkit-user-select:none;user-select:none;transition:border-color var(--transition-fast),background var(--transition-fast),box-shadow var(--transition-fast)}.quiz-ord-item:hover{border-color:var(--quiz-accent);box-shadow:var(--shadow-sm)}.quiz-ord-item:active{cursor:grabbing;box-shadow:var(--shadow-md)}.quiz-ord-item--correct{border-color:var(--quiz-correct-border);background:var(--quiz-correct-surface);cursor:default}.quiz-ord-item--wrong{border-color:var(--quiz-wrong-border);background:var(--quiz-wrong-surface);cursor:default}.quiz-ord-pos{display:inline-flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:var(--radius-full);background:var(--color-bg-subtle);border:2px solid var(--color-border);font-size:var(--text-sm);font-weight:700;flex-shrink:0;font-variant-numeric:tabular-nums}.quiz-ord-item--correct .quiz-ord-pos{background:var(--quiz-correct);border-color:var(--quiz-correct);color:#fff}.quiz-ord-item--wrong .quiz-ord-pos{background:var(--quiz-wrong);border-color:var(--quiz-wrong);color:#fff}.quiz-ord-label{flex:1;font-size:var(--text-sm);line-height:1.4}.quiz-ord-controls{display:flex;align-items:center;gap:var(--space-1);flex-shrink:0}.quiz-ord-arrow{display:inline-flex;align-items:center;justify-content:center;width:44px;height:44px;border:1px solid var(--color-border);border-radius:var(--radius-sm);background:var(--color-bg);color:var(--color-text-muted);cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);padding:0;font-family:inherit}.quiz-ord-arrow:hover:not(:disabled){border-color:var(--quiz-accent);color:var(--quiz-accent);background:var(--quiz-accent-light)}.quiz-ord-arrow:disabled{opacity:.3;cursor:default}.quiz-ord-drag{display:inline-flex;color:var(--color-text-muted);cursor:grab;padding:0 2px}.quiz-ord-correct{margin:var(--space-2-5) 0 0 var(--space-5);padding:var(--space-2-5) 14px;font-size:var(--text-sm);color:var(--quiz-correct);background:var(--quiz-correct-surface);border-radius:var(--radius-md)}.quiz-ord-correct strong{color:var(--quiz-correct)}.quiz-results-actions{display:flex;justify-content:center;gap:14px;margin-top:var(--space-2)}.results-action{padding:14px var(--space-6);border-radius:var(--radius-md);font-size:var(--text-base);font-weight:600;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);text-decoration:none;display:inline-block}.results-action--retry{background:var(--color-surface);border:2px solid var(--color-border);color:var(--color-text)}.results-action--retry:hover{background:var(--color-bg-muted);border-color:var(--quiz-navy)}.results-action--cta{background:var(--gradient-brand);color:#fff;border:2px solid transparent}.results-action--cta:hover{opacity:.9;text-decoration:none}.share-results{text-align:center;margin-bottom:var(--space-5)}.share-results-label{font-size:var(--text-sm);font-weight:600;color:var(--color-text-muted);margin:0 0 var(--space-3)}.share-results-buttons{display:flex;justify-content:center;gap:var(--space-2-5)}.share-btn{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:var(--radius-full);border:1px solid var(--color-border);background:var(--color-bg);color:var(--color-text-muted);transition:background .15s ease,color .15s ease;text-decoration:none}.share-btn:hover{background:var(--color-bg-muted);color:var(--color-text)}@media(max-width:40rem){.quiz-results{padding:var(--space-4) var(--space-3);border-radius:0}}@media(max-width:31.25rem){.score-ring{width:130px;height:130px}.score-ring-pct{font-size:32px}.stat-value{font-size:22px}.stat-card{padding:var(--space-3) var(--space-2)}.question-review-summary{padding:var(--space-2-5) var(--space-3);gap:var(--space-2)}.quiz-results-actions{flex-direction:column}.results-action{text-align:center}}.post-quiz-feedback{margin-top:var(--space-3)}.feedback-divider{height:1px;background:var(--color-border);margin-bottom:28px}.feedback-heading{font-size:var(--text-lg);font-weight:700;color:var(--color-text);margin:0 0 var(--space-5);text-align:center}.feedback-question{margin-bottom:var(--space-5);opacity:0;transform:translateY(14px);animation:feedbackFadeIn .45s var(--ease-out) forwards}.feedback-question--visible{opacity:1;transform:translateY(0)}.feedback-question-text{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);margin:0 0 var(--space-3);text-align:center}.feedback-scale{display:flex;flex-wrap:wrap;gap:var(--space-2);justify-content:center}.feedback-scale-option{padding:var(--space-2) var(--space-4);min-height:44px;border-radius:var(--radius-full);border:1.5px solid var(--color-border);background:var(--color-surface);color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:500;cursor:pointer;transition:background var(--transition-fast),color var(--transition-fast),border-color var(--transition-fast),box-shadow var(--transition-fast),transform var(--transition-fast);white-space:nowrap;display:inline-flex;align-items:center}.feedback-scale-option:hover{border-color:var(--quiz-navy);color:var(--quiz-navy);background:var(--quiz-navy-light)}.feedback-scale-option--active{border-color:var(--quiz-navy);background:var(--quiz-navy);color:#fff}.feedback-scale-option--active:hover{background:var(--quiz-navy-hover);color:#fff}.feedback-followup{margin-top:14px;opacity:0;max-height:0;overflow:hidden;transition:opacity .35s var(--ease-out),max-height .35s var(--ease-out)}.feedback-followup--visible{opacity:1;max-height:250px}.feedback-followup-label{display:block;font-size:var(--text-sm);color:var(--color-text-muted);margin-bottom:var(--space-2);line-height:1.5}.feedback-followup-textarea{width:100%;padding:var(--space-2-5) 14px;border:1.5px solid var(--color-border);border-radius:var(--radius-md);font-size:var(--text-sm);font-family:var(--font-sans);color:var(--color-text);background:var(--color-bg);resize:vertical;transition:border-color var(--transition-fast)}.feedback-followup-textarea:focus{outline:none;border-color:var(--quiz-navy)}.feedback-submit-btn{margin-top:var(--space-2-5);padding:var(--space-2-5) var(--space-5);border-radius:var(--radius-md);border:none;background:var(--quiz-navy);color:#fff;font-size:var(--text-sm);font-weight:600;cursor:pointer;transition:background var(--transition-fast)}.feedback-submit-btn:hover{background:var(--quiz-navy-hover)}.feedback-thanks{display:flex;align-items:center;justify-content:center;gap:var(--space-2-5);padding:18px;color:var(--quiz-success);font-size:var(--text-sm);font-weight:600;animation:feedbackFadeIn .45s var(--ease-out) forwards}@media(prefers-reduced-motion:reduce){.feedback-question{opacity:1;transform:none;animation:none}.feedback-followup{transition:none}.feedback-thanks{animation:none}}@media(max-width:31.25rem){.feedback-scale{flex-direction:column;align-items:stretch}.feedback-scale-option{text-align:center}}.content-modules{display:flex;flex-direction:column;gap:var(--space-6)}.content-module{border-radius:var(--radius-lg);overflow:hidden;background:var(--color-surface);position:relative;box-shadow:var(--shadow-card);border-top:4px solid var(--module-accent, var(--color-primary));transition:box-shadow var(--transition-normal),transform var(--transition-normal)}.content-module:hover{box-shadow:var(--shadow-md);transform:translateY(-2px)}.content-module-header{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-5) var(--space-6);background:color-mix(in srgb,var(--module-accent, var(--color-primary)) 3%,var(--color-surface))}.content-module-icon-wrap{width:42px;height:42px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;flex-shrink:0;background:color-mix(in srgb,var(--module-accent, var(--color-primary)) 12%,white);color:var(--module-accent, var(--color-primary))}.content-module-header h3{margin:0;font-size:var(--text-lg);font-weight:700;color:var(--color-text)}.content-module-body{padding:var(--space-5) var(--space-6);font-size:var(--text-base);line-height:1.75;color:var(--color-text-secondary)}.content-module-body a{color:var(--quiz-accent);font-weight:500}.content-module-body h4{font-size:var(--text-sm);font-weight:700;color:var(--color-text);margin:0;padding:var(--space-3) var(--space-5);background:var(--color-bg-subtle);border-top:1px solid var(--color-border-light);border-bottom:1px solid var(--color-border-light);display:flex;align-items:center;gap:var(--space-2)}.content-module-body h4:before{content:"";width:3px;height:1em;border-radius:var(--radius-full);flex-shrink:0;background:var(--module-accent, var(--color-primary))}.content-module-body h4:first-child{margin-top:0;border-top:none}.content-module-body ol,.content-module-body ul{list-style:none;padding:0;margin:0}.content-module-body li{padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border-light);display:flex;align-items:baseline;gap:var(--space-2);font-size:var(--text-sm);line-height:1.65}.content-module-body li:last-child{border-bottom:none}.content-module-body li:before{content:"";width:5px;height:5px;border-radius:50%;background:var(--module-accent, var(--color-primary));flex-shrink:0;margin-top:var(--space-2)}.content-module-body li strong{color:var(--color-text)}.content-module-body ol{counter-reset:module-ol}.content-module-body ol li:before{content:counter(module-ol);counter-increment:module-ol;width:22px;height:22px;border-radius:50%;background:color-mix(in srgb,var(--module-accent, var(--color-primary)) 12%,white);font-size:var(--text-xs);font-weight:700;color:var(--module-accent, var(--color-primary));display:flex;align-items:center;justify-content:center;flex-shrink:0;margin-top:2px}.content-module-body>p{padding:var(--space-4) var(--space-5) 0;margin:0;font-size:var(--text-sm);line-height:1.7;color:var(--color-text-muted)}.content-module-body>p:last-child{padding-bottom:var(--space-2)}.content-module-body>p+h4{margin-top:var(--space-4)}.content-module-list{list-style:none;padding:0;margin:0}.content-module-list li{display:flex;flex-direction:column;gap:var(--space-1);padding:var(--space-4) var(--space-5);border-bottom:1px solid var(--color-border-light);font-size:var(--text-sm);line-height:1.6;position:relative;padding-left:var(--space-6)}.content-module-list li:before{content:"";position:absolute;left:var(--space-5);top:22px;width:6px;height:6px;border-radius:50%}.content-module-list li:before{background:var(--module-accent, var(--color-primary))}.content-module-list li:last-child{border-bottom:none}.content-module-list li strong{color:var(--color-text);font-weight:600}.content-module-list li span{color:var(--color-text-secondary);font-size:var(--text-sm);line-height:1.65}.content-module-dl{margin:0;padding:0}.content-module-dl-row{display:flex;gap:var(--space-4);padding:var(--space-3) var(--space-5);border-bottom:1px solid var(--color-border-light);font-size:var(--text-sm);line-height:1.6}.content-module-dl-row:nth-child(2n){background:var(--color-bg-subtle)}.content-module-dl-row:last-child{border-bottom:none}.content-module-dl-row dt{font-weight:600;min-width:140px;flex-shrink:0;color:var(--color-text)}.content-module-dl-row dd{margin:0;color:var(--color-text-secondary)}.not-found{max-width:var(--container-max);margin:0 auto;padding:var(--space-8) var(--section-space-x);text-align:center;display:flex;flex-direction:column;align-items:center;gap:var(--space-4);min-height:50vh;justify-content:center}.not-found-icon{color:var(--color-text-muted);opacity:.4;margin-bottom:var(--space-2)}.not-found-title{font-size:var(--text-3xl);font-weight:700;margin:0;letter-spacing:var(--tracking-tight)}.not-found-desc{font-size:var(--text-lg);color:var(--color-text-secondary);margin:0;max-width:40ch;line-height:var(--line-height-relaxed)}.not-found-actions{margin-top:var(--space-4)}:focus-visible{outline:2px solid var(--quiz-accent);outline-offset:2px}@media(max-width:64rem){.quiz-fs-content{padding:var(--space-5) 20px}}@media(max-width:40rem){.content-module-header{padding:var(--space-4)}.content-module-body{padding:0 0 var(--space-2) 0}.content-module-body>p{padding:var(--space-4) var(--space-4) 0}.content-module-body h4{padding:var(--space-3) var(--space-4)}.content-module-body li{padding:var(--space-3) var(--space-4);padding-left:28px}.content-module-list li{padding-left:28px}.content-module-list li:before{left:var(--space-4)}.content-module-dl-row{padding:var(--space-3) var(--space-4)}.content-module-header h3{font-size:var(--text-base)}}@media(max-width:37.5rem){.quiz-options{padding-left:0}.quiz-option{padding:var(--space-2-5) var(--space-3)}.quiz-question-card{padding:var(--space-3);border-radius:0}.quiz-fullscreen .quiz-question-card{padding:0}.quiz-inline-questions{padding:var(--space-3) 0;gap:var(--space-4);margin-inline:calc(-1 * var(--section-padding-x))}.quiz-option-letter{width:32px;height:32px}.quiz-results{padding:var(--space-4) var(--space-3);border-radius:0}.quiz-fs-results{padding:var(--space-5) var(--space-3)}.score-card{flex-direction:column;gap:var(--space-5);padding:var(--space-5);text-align:center}.score-details{align-items:center}.score-ring{width:110px;height:110px}.score-ring-pct{font-size:26px}.score-category-name{width:100px;font-size:var(--text-sm)}.quiz-results-actions{flex-direction:column;align-items:center}.quiz-fs-content{padding:var(--space-4);gap:var(--space-4)}.quiz-fs-slide-inner{padding:var(--space-3)}.feedback-inline{padding:0 var(--space-3) var(--space-3)}.feedback-sheet-continue{padding:var(--space-3) var(--space-4);font-size:var(--text-base)}.quiz-fs-nav-arrows{padding:var(--space-2) var(--space-3) var(--space-3);gap:var(--space-2)}.quiz-fs-arrow{width:36px;height:36px}.quiz-fs-dot{width:8px;height:8px;padding:8px}.quiz-fs-submit-section{padding:var(--space-5) var(--space-4)}.quiz-tf-options,.quiz-ord-list,.quiz-fb-stem{padding-left:0}.quiz-ms-submit,.quiz-fb-submit,.quiz-ord-submit,.quiz-ms-hint{margin-left:0}}@media(max-width:40rem){.question-navigator__btn{width:32px;height:32px;font-size:var(--text-xs)}}@media(max-width:40rem){.quiz-ord-pos{width:28px;height:28px;font-size:var(--text-xs)}}@media(max-width:22.5rem){.quiz-tf-btn{padding:var(--space-2-5) var(--space-3);font-size:var(--text-sm);gap:var(--space-1-5)}}@media(max-width:25rem){.score-ring{width:100px;height:100px}.score-ring-pct{font-size:22px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}::view-transition-old(root){animation:page-fade-out .15s ease forwards}::view-transition-new(root){animation:page-fade-in .2s ease forwards}@keyframes page-fade-out{0%{opacity:1}to{opacity:0}}@keyframes page-fade-in{0%{opacity:0}to{opacity:1}}.quiz-mode-selector{margin-bottom:1rem;padding:0;max-width:540px}.quiz-mode-selector-label{font-size:.7rem;font-weight:500;text-transform:uppercase;letter-spacing:.06em;color:var(--color-text-muted, #9ca3af);margin-bottom:6px}.quiz-mode-selector-options{display:flex;gap:6px}.quiz-mode-option{flex:1;display:flex;align-items:center;justify-content:center;gap:6px;padding:8px 10px;border:1.5px solid var(--color-border, #e5e7eb);border-radius:8px;background:var(--color-bg, #fff);cursor:pointer;transition:border-color .15s,background .15s;text-align:center}.quiz-mode-option:hover{border-color:var(--color-text-muted, #9ca3af)}.quiz-mode-option--active{border-color:var(--color-text, #111827);background:var(--color-bg, #fff)}.quiz-mode-option-icon{display:none}.quiz-mode-option-info{display:flex;align-items:center;gap:6px;min-width:0}.quiz-mode-option-label{font-size:.8rem;font-weight:600;color:var(--color-text, #374151)}.quiz-mode-option--active 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var(--space-4)}.quiz-progress-milestone-track{position:relative;height:6px;background:var(--color-border);border-radius:3px}.quiz-progress-milestone-fill{position:absolute;top:0;left:0;height:100%;background:linear-gradient(90deg,var(--quiz-navy),var(--quiz-accent));border-radius:3px;transition:width .6s cubic-bezier(.16,1,.3,1)}.quiz-progress-milestone-marker{position:absolute;top:50%;transform:translate(-50%,-50%);width:12px;height:12px;border-radius:50%;background:var(--color-border);border:2px solid #fff;transition:background .3s,transform .3s}.quiz-progress-milestone-marker--reached{background:var(--quiz-accent);transform:translate(-50%,-50%) scale(1.2)}.quiz-progress-milestone-label{position:absolute;top:14px;left:50%;transform:translate(-50%);font-size:var(--text-xs);font-weight:600;color:var(--color-text-muted);white-space:nowrap}.lead-capture{padding:var(--space-4);border-radius:var(--radius-md);background:var(--color-bg-subtle);border:1px solid var(--color-border)}.lead-capture--done{display:flex;align-items:center;gap:var(--space-2);color:var(--quiz-success);font-weight:600;font-size:var(--text-sm)}.lead-capture-heading{margin:0 0 var(--space-3);font-size:var(--text-sm);font-weight:600;color:var(--color-text)}.lead-capture-row{display:flex;gap:var(--space-2)}.lead-capture-input{flex:1;min-width:0;padding:var(--space-2) var(--space-3);border:1px solid var(--color-border);border-radius:var(--radius-sm);font-size:var(--text-sm);font-family:inherit;outline:none;transition:border-color var(--transition-fast)}.lead-capture-input:focus{border-color:var(--quiz-accent)}.lead-capture-btn{padding:var(--space-2) var(--space-4);background:var(--quiz-navy);color:#fff;border:none;border-radius:var(--radius-sm);font-size:var(--text-sm);font-weight:600;font-family:inherit;cursor:pointer;white-space:nowrap;transition:background var(--transition-fast)}.lead-capture-btn:hover{background:var(--quiz-navy-hover)}.lead-capture-error{margin:var(--space-2) 0 0;font-size:var(--text-xs);color:var(--accent-rose)}@media(max-width:30rem){.lead-capture-row{flex-direction:column}.lead-capture-btn{width:100%;justify-content:center}}@media(prefers-contrast:more){:root{--color-border: #6b7280;--color-border-light: #9ca3af;--shadow-card: none;--shadow-card-hover: none;--shadow-sm: none;--shadow-md: none;--shadow-lg: none}.quiz-option,.btn{border-width:3px}a{text-decoration:underline}}.btn:focus-visible{outline:2px solid var(--color-primary);outline-offset:3px}.quiz-option:focus-visible{outline:3px solid var(--color-primary);outline-offset:-1px}input:focus-visible,select:focus-visible,textarea:focus-visible{outline:none;box-shadow:0 0 0 3px color-mix(in srgb,var(--color-primary) 30%,transparent);border-color:var(--color-primary)}body{word-spacing:var(--user-word-spacing, normal);letter-spacing:var(--user-letter-spacing, 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4px}.fc-pile{display:flex;align-items:center;gap:8px}.fc-pile__count{font-size:1.3rem;font-weight:800;font-variant-numeric:tabular-nums;line-height:1}.fc-pile__label{font-size:.7rem;font-weight:600;text-transform:uppercase;letter-spacing:.04em}.fc-pile--learning{color:#ef4444}.fc-pile--know{color:#10b981}.fc-stage{flex:1 0 auto;display:flex;align-items:center;justify-content:center;padding:16px 24px;position:relative;perspective:1200px}.fc-card-wrapper{width:100%;max-width:480px;transition:transform .15s ease,opacity .15s ease;touch-action:pan-y}.fc-card-wrapper--exit-left{animation:fc-swipe-left .28s ease forwards}.fc-card-wrapper--exit-right{animation:fc-swipe-right .28s ease forwards}@keyframes fc-swipe-left{to{transform:translate(-120%) rotate(-12deg);opacity:0}}@keyframes fc-swipe-right{to{transform:translate(120%) rotate(12deg);opacity:0}}.fc-card{display:grid;width:100%;min-height:340px;max-height:80vh;transform-style:preserve-3d;transition:transform .55s 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