@import"https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&display=swap";*{margin:0;padding:0;box-sizing:border-box}body{margin:0}.consent-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);opacity:0;visibility:hidden;transition:all .3s ease;padding:var(--space-4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.consent-overlay.visible{opacity:1;visibility:visible}.consent-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);max-width:520px;width:100%;max-height:85vh;overflow-y:auto;box-shadow:var(--shadow-2xl);animation:slideIn .3s ease;border:1px solid var(--color-border-light)}@keyframes slideIn{0%{transform:scale(.95) translateY(-20px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.consent-close{background:transparent;border:none;font-size:1.5rem;cursor:pointer;color:var(--color-text-secondary);width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast);position:absolute;top:var(--space-4);right:var(--space-4);z-index:2}.consent-close:hover{background:var(--color-bg-subtle);color:var(--color-text-primary)}.consent-header{display:flex;justify-content:center;align-items:center;padding:var(--space-6) var(--space-4) var(--space-3);border-bottom:1px solid var(--color-border-light);position:relative}.consent-header h3{margin:0;color:var(--color-text-primary);font-size:var(--text-xl);display:flex;align-items:center;gap:var(--space-2);font-weight:var(--font-weight-bold)}.consent-content{padding:var(--space-5)}.consent-description{color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin-bottom:var(--space-5);text-align:center;font-size:var(--text-sm)}.consent-options{display:flex;flex-direction:column;gap:var(--space-3);margin-bottom:var(--space-5)}.consent-option{display:flex;justify-content:space-between;align-items:center;padding:var(--space-3);background:var(--color-bg-subtle);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);transition:all var(--transition-fast)}.consent-option:hover{border-color:var(--color-primary-300);background:var(--color-bg-surface-elevated);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.option-header{display:flex;align-items:center;gap:var(--space-3);flex:1}.option-icon{font-size:1.5rem;flex-shrink:0}.option-info{flex:1}.option-info h4{margin:0 0 var(--space-1) 0;color:var(--color-text-primary);font-size:var(--text-sm);font-weight:var(--font-weight-semibold)}.option-info p{margin:0;color:var(--color-text-secondary);font-size:var(--text-xs);line-height:var(--line-height-tight)}.option-toggle{position:relative;margin-left:var(--space-3)}.option-toggle input[type=checkbox]{display:none}.option-toggle label{display:block;width:46px;height:24px;background:var(--color-border-light);border-radius:var(--radius-full);position:relative;cursor:pointer;transition:all var(--transition-fast)}.option-toggle label:after{content:"";position:absolute;top:2px;left:2px;width:20px;height:20px;background:#fff;border-radius:var(--radius-full);transition:all var(--transition-fast);box-shadow:var(--shadow-sm)}.option-toggle input[type=checkbox]:checked+label{background:var(--color-primary-500)}.option-toggle input[type=checkbox]:checked+label:after{left:24px}.option-toggle.disabled label{background:var(--color-bg-surface);cursor:not-allowed;opacity:.6}.option-toggle.disabled .toggle-label{color:var(--color-text-tertiary);font-size:var(--text-xs);white-space:nowrap}.consent-footer{padding:var(--space-5);border-top:1px solid var(--color-border-light);background:var(--color-bg-subtle);border-radius:0 0 var(--radius-2xl) var(--radius-2xl)}.consent-links{display:flex;justify-content:center;gap:var(--space-3);margin-bottom:var(--space-3);flex-wrap:wrap}.consent-links a{color:var(--color-primary-500);text-decoration:none;font-size:var(--text-xs);transition:color var(--transition-fast);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm)}.consent-links a:hover{color:var(--color-primary-600);text-decoration:underline;background:var(--color-bg-surface)}.consent-actions{display:flex;gap:var(--space-2);flex-wrap:wrap}.consent-btn{padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);border:none;cursor:pointer;font-size:var(--text-sm);font-weight:var(--font-weight-semibold);transition:all var(--transition-fast);flex:1;min-width:110px}.consent-btn.decline{background:var(--color-bg-surface);color:var(--color-text-primary);border:1px solid var(--color-border-light)}.consent-btn.decline:hover{background:var(--color-bg-subtle);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.consent-btn.necessary{background:var(--color-primary-500);color:#fff}.consent-btn.necessary:hover{background:var(--color-primary-600);transform:translateY(-1px);box-shadow:var(--shadow-md)}.consent-btn.accept{background:var(--color-success);color:#fff}.consent-btn.accept:hover{background:var(--color-success-dark);transform:translateY(-1px);box-shadow:var(--shadow-md)}.policy-link{background:transparent;border:none;color:var(--color-primary-500);text-decoration:none;font-size:var(--text-xs);cursor:pointer;transition:color var(--transition-fast);padding:var(--space-1) var(--space-2);border-radius:var(--radius-sm)}.policy-link:hover{color:var(--color-primary-600);text-decoration:underline;background:var(--color-bg-surface)}.policy-modal-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:calc(var(--z-modal) + 10);padding:var(--space-4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.policy-modal{background:var(--color-bg-surface);border-radius:var(--radius-xl);max-width:480px;width:100%;max-height:80vh;overflow-y:auto;box-shadow:var(--shadow-2xl);animation:slideIn .3s ease;border:1px solid var(--color-border-light)}.policy-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-4);border-bottom:1px solid var(--color-border-light);position:sticky;top:0;background:var(--color-bg-surface);z-index:1}.policy-header h3{margin:0;color:var(--color-text-primary);font-size:var(--text-lg);display:flex;align-items:center;gap:var(--space-2);font-weight:var(--font-weight-bold)}.policy-close{background:transparent;border:none;font-size:1.25rem;cursor:pointer;color:var(--color-text-secondary);width:36px;height:36px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.policy-close:hover{background:var(--color-bg-subtle);color:var(--color-text-primary)}#privacy-policy-modal .policy-content,div.policy-modal div.policy-content{padding:var(--space-4);font-size:var(--text-sm)}#privacy-policy-modal .policy-content h4,div.policy-modal div.policy-content h4,#privacy-policy-modal .policy-content p,div.policy-modal div.policy-content p{color:var(--color-text-primary)!important}#privacy-policy-modal .policy-content h4,div.policy-modal div.policy-content h4{margin:var(--space-3) 0 var(--space-1)!important;font-size:var(--text-base)!important;font-weight:var(--font-weight-semibold)!important;padding-bottom:var(--space-1)!important;border-bottom:1px solid var(--color-border-light)!important}#privacy-policy-modal .policy-content p,div.policy-modal div.policy-content p{margin:0!important;margin-bottom:var(--space-3)!important}#privacy-policy-modal .policy-content h4:first-child,div.policy-modal div.policy-content h4:first-child{margin-top:0!important}#privacy-policy-modal .policy-content p,div.policy-modal div.policy-content p{color:var(--color-text-secondary)!important;line-height:1.5!important;margin-bottom:var(--space-2)!important}#privacy-policy-modal .policy-content ul,div.policy-modal div.policy-content ul{color:var(--color-text-secondary)!important;padding-left:var(--space-4)!important;margin-bottom:var(--space-2)!important}#privacy-policy-modal .policy-content li,div.policy-modal div.policy-content li{margin-bottom:var(--space-1)!important;line-height:1.5!important;position:relative!important}#privacy-policy-modal .policy-content li:before,div.policy-modal div.policy-content li:before{content:"•"!important;color:var(--color-primary-500)!important;font-weight:700!important;position:absolute!important;left:-.75rem!important}#privacy-policy-modal .policy-content h5,div.policy-modal div.policy-content h5{color:var(--color-text-primary)!important;margin:var(--space-2) 0 var(--space-1)!important;font-size:var(--text-sm)!important;font-weight:var(--font-weight-semibold)!important}.cookie-type{background:var(--color-bg-subtle);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);margin-bottom:var(--space-2);border-left:3px solid var(--color-primary-500)}.cookie-type h5{margin:0 0 var(--space-1) 0;font-size:var(--text-sm);font-weight:var(--font-weight-semibold);color:var(--color-text-primary)}.cookie-type p{margin:0;color:var(--color-text-secondary);font-size:var(--text-xs);line-height:1.4}.policy-footer{padding:var(--space-4);border-top:1px solid var(--color-border-light);text-align:center;background:var(--color-bg-subtle);border-radius:0 0 var(--radius-xl) var(--radius-xl)}.policy-ok-btn{background:var(--color-primary-500);color:#fff;border:none;padding:var(--space-2) var(--space-4);border-radius:var(--radius-md);cursor:pointer;font-size:var(--text-sm);font-weight:var(--font-weight-semibold);transition:all var(--transition-normal);min-width:100px}.policy-ok-btn:hover{background:var(--color-primary-600);transform:translateY(-1px);box-shadow:var(--shadow-md)}.important-note{background:var(--color-bg-surface-elevated);border:1px solid var(--color-warning);border-left:4px solid var(--color-warning);border-radius:var(--radius-lg);padding:var(--space-3);margin-bottom:var(--space-4);display:flex;gap:var(--space-2);align-items:flex-start}.note-icon{font-size:1.25rem;flex-shrink:0;color:var(--color-warning)}.note-content h4{margin:0 0 var(--space-1) 0;color:var(--color-text-primary);font-size:var(--text-sm);font-weight:var(--font-weight-semibold)}.note-content p{margin:0;color:var(--color-text-primary);font-size:var(--text-xs);line-height:var(--line-height-relaxed)}.consent-option.mandatory{background:linear-gradient(135deg,#ef44440d,#ef44441a);border:1px solid rgba(239,68,68,.2)}.consent-option.mandatory .option-icon{color:#ef4444}.consent-option.mandatory .option-info h4{color:var(--color-text-primary)}.consent-btn.analytics-off{background:var(--color-bg-surface);color:var(--color-text-primary);border:1px solid var(--color-border-light)}.consent-btn.analytics-off:hover{background:var(--color-bg-subtle);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.consent-btn.accept-all{background:var(--color-primary-500);color:#fff}.consent-btn.accept-all:hover{background:var(--color-primary-600);transform:translateY(-1px);box-shadow:var(--shadow-md)}@media (prefers-color-scheme: dark){.important-note{background:rgba(var(--color-warning-rgb, 245, 158, 11),.05);border-color:var(--color-warning)}.note-content h4,.note-content p{color:var(--color-text-primary)}.consent-option.mandatory{background:linear-gradient(135deg,#ef44441a,#ef444426);border-color:#ef44444d}.consent-option.mandatory .option-info h4{color:var(--color-text-primary)}}@media (max-width: 768px){.policy-modal{max-width:95%;max-height:85vh}.policy-header,.policy-content,.policy-footer{padding:var(--space-3)}}@media (max-width: 480px){.policy-modal{max-width:100%;margin:var(--space-2);border-radius:var(--radius-lg)}.policy-header h3{font-size:var(--text-base)}.policy-content h4{font-size:var(--text-sm)}}@media (max-width: 768px){.consent-overlay{padding:var(--space-4);align-items:center}.consent-modal{max-width:95%;max-height:90vh}.consent-header,.consent-content,.consent-footer{padding:var(--space-3)}.consent-header{padding-top:var(--space-4)}.consent-actions{flex-direction:column}.consent-btn{width:100%}.consent-option{flex-direction:column;align-items:flex-start;gap:var(--space-2)}.option-toggle{margin-left:0;align-self:flex-end}.consent-links{justify-content:center}}@media (max-width: 480px){.consent-modal{max-width:100%;border-radius:var(--radius-xl);margin:var(--space-2)}.consent-header h3{font-size:var(--text-lg)}.consent-description{font-size:var(--text-xs)}.option-icon{font-size:1.25rem}}@media (prefers-color-scheme: dark){.consent-modal{background:var(--color-bg-surface-elevated);border-color:var(--color-border)}.consent-option{background:#ffffff0d;border-color:var(--color-border)}.consent-footer{background:#ffffff08}}.adblock-alert-overlay{position:fixed;inset:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:calc(var(--z-modal) + 20);padding:var(--space-4);-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);animation:fadeIn .3s ease}.adblock-alert{background:var(--color-bg-surface);border-radius:var(--radius-2xl);max-width:500px;width:100%;box-shadow:var(--shadow-2xl);border:2px solid var(--color-warning);animation:slideIn .4s ease;overflow:hidden}@keyframes slideIn{0%{transform:scale(.9) translateY(-30px);opacity:0}to{transform:scale(1) translateY(0);opacity:1}}.adblock-header{display:flex;align-items:center;padding:var(--space-6);background:linear-gradient(135deg,#f59e0b1a,#fbbf240d);border-bottom:1px solid rgba(245,158,11,.3);position:relative}.adblock-icon{font-size:2rem;margin-right:var(--space-3)}.adblock-header h3{margin:0;color:#92400e;font-size:var(--text-xl);font-weight:var(--font-weight-bold);flex:1}.adblock-close{background:transparent;border:none;font-size:1.5rem;cursor:pointer;color:var(--color-text-secondary);width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.adblock-close:hover{background:var(--color-bg-subtle);color:var(--color-text-primary)}.adblock-content{padding:var(--space-6)}.adblock-content p{color:var(--color-text-primary);line-height:var(--line-height-relaxed);margin-bottom:var(--space-4);font-size:var(--text-base)}.adblock-tips{background:var(--color-bg-subtle);border-radius:var(--radius-lg);padding:var(--space-4);margin-top:var(--space-4);border-left:3px solid var(--color-warning)}.adblock-tips h4{margin:0 0 var(--space-2) 0;color:var(--color-text-primary);font-size:var(--text-sm);font-weight:var(--font-weight-semibold)}.adblock-tips ul{margin:0;padding-left:var(--space-4)}.adblock-tips li{color:var(--color-text-secondary);font-size:var(--text-sm);line-height:var(--line-height-relaxed);margin-bottom:var(--space-1)}.adblock-actions{display:flex;gap:var(--space-3);padding:0 var(--space-6) var(--space-6);flex-wrap:wrap}.adblock-btn{padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);border:none;cursor:pointer;font-size:var(--text-sm);font-weight:var(--font-weight-semibold);transition:all var(--transition-fast);flex:1;min-width:120px}.adblock-btn.premium{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));color:#fff;order:1}.adblock-btn.premium:hover{background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:translateY(-1px);box-shadow:var(--shadow-md)}.adblock-btn.disable,.adblock-btn.howto{background:var(--color-bg-surface);color:var(--color-text-primary);border:1px solid var(--color-border-light);order:2}.adblock-btn.disable:hover,.adblock-btn.howto:hover{background:var(--color-bg-subtle);transform:translateY(-1px);box-shadow:var(--shadow-sm)}.adblock-btn.dismiss,.adblock-btn.continue{background:transparent;color:var(--color-text-secondary);border:1px dashed var(--color-border-light);order:3}.adblock-btn.dismiss:hover,.adblock-btn.continue:hover{background:var(--color-bg-subtle);color:var(--color-text-primary)}.adblock-footer{padding:var(--space-4) var(--space-6);border-top:1px solid var(--color-border-light);background:var(--color-bg-subtle);text-align:center}.adblock-footer small{color:var(--color-text-tertiary);font-size:var(--text-xs);line-height:var(--line-height-relaxed)}@media (max-width: 768px){.adblock-alert{max-width:95%;margin:var(--space-2)}.adblock-header,.adblock-content,.adblock-actions{padding:var(--space-4)}.adblock-header h3{font-size:var(--text-lg)}.adblock-actions{flex-direction:column}.adblock-btn{width:100%}}@media (max-width: 480px){.adblock-alert-overlay{padding:var(--space-2)}.adblock-alert{max-width:100%;border-radius:var(--radius-xl)}}:root{--color-primary-50: #f0f9ff;--color-primary-100: #e0f2fe;--color-primary-200: #bae6fd;--color-primary-300: #7dd3fc;--color-primary-400: #38bdf8;--color-primary-500: #0ea5e9;--color-primary-600: #0284c7;--color-primary-700: #0369a1;--color-primary-800: #075985;--color-primary-900: #0c4a6e;--color-primary: var(--color-primary-600);--color-secondary-50: #fdf4ff;--color-secondary-500: #a855f7;--color-secondary-600: #9333ea;--color-secondary: var(--color-secondary-600);--color-bg-primary: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);--color-bg-secondary: #f1f5f9;--color-bg-surface: #ffffff;--color-bg-surface-elevated: #f8fafc;--color-bg-subtle: #eef2f7;--color-text-primary: #0f172a;--color-text-secondary: #475569;--color-text-tertiary: #64748b;--color-text-on-primary: #ffffff;--color-border-light: #e2e8f0;--color-border-medium: #cbd5e1;--color-border-strong: #94a3b8;--color-border: var(--color-border-light);--color-success: #10b981;--color-success-dark: #059669;--color-warning: #f59e0b;--color-warning-dark: #b45309;--color-error: #ef4444;--color-error-dark: #b91c1c;--color-info: #3b82f6;--font-family-sans: "Manrope", "Segoe UI", "Helvetica Neue", Arial, sans-serif;--font-family-display: "Manrope", "Segoe UI", "Helvetica Neue", Arial, sans-serif;--font-family-mono: "JetBrains Mono", "Courier New", monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--font-weight-normal: 400;--font-weight-medium: 500;--font-weight-semibold: 600;--font-weight-bold: 700;--font-weight-extrabold: 800;--line-height-tight: 1.25;--line-height-normal: 1.5;--line-height-relaxed: 1.75;--letter-spacing-tight: -.01em;--letter-spacing-normal: 0;--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;--space-20: 5rem;--radius-sm: .25rem;--radius-md: .375rem;--radius-lg: .5rem;--radius-xl: .75rem;--radius-2xl: 1rem;--radius-3xl: 1.5rem;--radius-full: 9999px;--shadow-xs: 0 1px 1px 0 rgb(15 23 42 / .05);--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--shadow-xl: 0 20px 25px -5px rgb(0 0 0 / .1), 0 8px 10px -6px rgb(0 0 0 / .1);--shadow-2xl: 0 25px 50px -12px rgb(15 23 42 / .25);--z-dropdown: 1000;--z-sticky: 1020;--z-fixed: 1030;--z-modal: 1040;--z-popover: 1050;--z-tooltip: 1060;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-normal: .3s cubic-bezier(.4, 0, .2, 1);--transition-slow: .5s cubic-bezier(.4, 0, .2, 1)}.dark-theme{--color-bg-primary: #0f172a;--color-bg-secondary: #020617;--color-bg-surface: #1e293b;--color-bg-surface-elevated: #334155;--color-bg-subtle: #1e293b;--color-text-primary: #f8fafc;--color-text-secondary: #cbd5e1;--color-text-tertiary: #94a3b8;--color-text-on-primary: #ffffff;--color-border-light: #334155;--color-border-medium: #475569;--color-border-strong: 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var(--transition-normal);text-align:left;position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.unit-card:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary-500),var(--color-secondary-500));transform:scaleX(0);transition:transform var(--transition-normal)}.unit-card:hover:not(.disabled){transform:translateY(-3px);border-color:var(--color-primary-300);box-shadow:var(--shadow-xl)}.unit-card:hover:not(.disabled):before{transform:scaleX(1)}.unit-card.disabled{opacity:.6;cursor:not-allowed;filter:grayscale(.8)}.unit-card.disabled:hover{transform:none;border-color:var(--color-border-light);box-shadow:none}.unit-number{font-size:var(--text-sm);color:var(--color-primary-500);font-weight:var(--font-weight-bold);text-transform:uppercase;letter-spacing:.05em;margin-bottom:var(--space-2)}.unit-name{margin:var(--space-2) 0;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight)}.unit-description-small{color:var(--color-text-secondary);font-size:var(--text-sm);line-height:var(--line-height-relaxed);margin-bottom:var(--space-4);display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden;line-clamp:2;box-orient:vertical}.unit-info{display:flex;justify-content:space-between;align-items:center;margin-top:var(--space-6);padding-top:var(--space-4);border-top:1px solid var(--color-border-light)}.word-count{font-size:var(--text-sm);color:var(--color-text-secondary);font-weight:var(--font-weight-medium)}.word-count.no-words{color:var(--color-error);font-style:italic}.start-btn{color:var(--color-primary-500);font-weight:var(--font-weight-semibold);font-size:var(--text-sm);transition:transform var(--transition-fast)}.unit-card:hover:not(.disabled) .start-btn{transform:translate(4px)}.coming-soon{background:linear-gradient(135deg,var(--color-warning),#d97706);color:#fff;padding:var(--space-1) var(--space-3);border-radius:var(--radius-full);font-size:var(--text-xs);font-weight:var(--font-weight-semibold);text-transform:uppercase;letter-spacing:.05em}.grade-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:var(--space-6);margin-top:var(--space-16);width:100%;max-width:1200px}.stat-card{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);padding:var(--space-6);text-align:center;transition:all var(--transition-fast);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.stat-card:before{content:"";position:absolute;inset:0;background:linear-gradient(135deg,var(--color-primary-500),transparent 70%);opacity:0;transition:opacity var(--transition-normal)}.stat-card:hover{transform:translateY(-2px);border-color:var(--color-primary-300);box-shadow:var(--shadow-lg)}.stat-card:hover:before{opacity:.05}.stat-card h4{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-semibold);margin-bottom:var(--space-2);text-transform:uppercase;letter-spacing:.05em;position:relative}.stat-number{font-size:2.5rem;font-weight:var(--font-weight-extrabold);color:var(--color-primary-500);display:block;line-height:1;position:relative}.grade-page .loading{display:flex;align-items:center;justify-content:center;min-height:50vh;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-medium);text-align:center;flex-direction:column;gap:var(--space-4)}.grade-page .error{display:flex;align-items:center;justify-content:center;min-height:50vh;flex-direction:column;gap:var(--space-6);text-align:center;color:var(--color-text-primary)}.grade-page .error-message{background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-xl);border-left:4px solid var(--color-error);max-width:500px;color:var(--color-text-primary)}.connection-error{text-align:center;padding:60px 20px;max-width:500px;margin:0 auto;background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);box-shadow:var(--shadow-sm)}.connection-error .error-icon{font-size:64px;margin-bottom:20px}.connection-error h2{color:var(--color-error);margin-bottom:16px}.connection-error p{color:var(--color-text-secondary);margin-bottom:30px;line-height:1.6}.error-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap}.no-units-message{text-align:center;padding:60px 20px;max-width:500px;margin:0 auto;background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);box-shadow:var(--shadow-sm)}.no-units-message .message-icon{font-size:64px;margin-bottom:20px}.no-units-message h2{color:var(--color-text-primary);margin-bottom:16px}.no-units-message p{color:var(--color-text-secondary);margin-bottom:30px;line-height:1.6}@media (max-width: 768px){.grade-page{padding:var(--space-4) var(--space-3)}.grade-page .page-header{flex-direction:column;text-align:center;gap:var(--space-4)}.units-grid{grid-template-columns:1fr;gap:var(--space-4)}.unit-card{padding:var(--space-6)}.grade-stats{grid-template-columns:1fr;gap:var(--space-4)}.stat-card{padding:var(--space-5)}.stat-number{font-size:2rem}}@media (max-width: 480px){.unit-info{flex-direction:column;align-items:flex-start;gap:var(--space-3)}.grade-progress{font-size:var(--text-base)}}@keyframes fadeInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.grade-page{animation:fadeInUp .5s ease-out}.unit-detail-page{width:100%;min-height:100vh;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;align-items:center;background:var(--color-bg-primary);position:relative}.unit-detail-page .page-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:var(--space-12);flex-wrap:wrap;gap:var(--space-6);width:100%;max-width:1200px;text-align:center}.unit-header-info{flex:1;min-width:300px;display:flex;flex-direction:column;align-items:center;text-align:center}.unit-detail-page .page-header h1{margin:0 0 var(--space-2) 0;font-size:clamp(2rem,5vw,3rem);font-weight:var(--font-weight-extrabold);letter-spacing:var(--letter-spacing-tight);line-height:var(--line-height-tight)}.unit-description{font-size:var(--text-lg);font-weight:var(--font-weight-medium);line-height:var(--line-height-relaxed)}.unit-stats{font-size:var(--text-base);font-weight:var(--font-weight-medium);text-align:center}.progress-summary{width:100%;max-width:1200px;margin-bottom:var(--space-12)}.progress-card{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);padding:var(--space-8);transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.progress-card:hover{border-color:var(--color-primary-300);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.progress-card h3{color:var(--color-text-primary);margin-bottom:var(--space-6);font-size:var(--text-xl);font-weight:var(--font-weight-bold);text-align:center}.progress-stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:var(--space-6)}.stat-item{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);padding:var(--space-4);border-radius:var(--radius-lg);background:var(--color-bg-subtle);transition:all var(--transition-fast)}.stat-item:hover{background:var(--color-bg-surface-elevated);transform:translateY(-1px)}.stat-label{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-medium);text-align:center}.stat-value{color:var(--color-primary-500);font-size:var(--text-2xl);font-weight:var(--font-weight-extrabold);line-height:1}.activities-section{width:100%;max-width:1200px;margin-bottom:var(--space-12)}.section-title{font-size:var(--text-3xl);font-weight:var(--font-weight-extrabold);margin-bottom:var(--space-8);text-align:center}.vocabulary-groups-grid{display:flex;flex-direction:column;gap:var(--space-8)}.vocabulary-group-row{display:grid;grid-template-columns:1fr 2fr;gap:var(--space-8);align-items:start;background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);padding:var(--space-8);transition:all var(--transition-normal);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.vocabulary-group-row:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary-500),var(--color-secondary-500));transform:scaleX(0);transition:transform var(--transition-normal)}.vocabulary-group-row:hover{border-color:var(--color-primary-300);box-shadow:var(--shadow-xl)}.vocabulary-group-row:hover:before{transform:scaleX(1)}.vocabulary-set-column{display:flex;flex-direction:column;gap:var(--space-4)}.vocabulary-set-with-video{display:flex;flex-direction:column;gap:var(--space-3)}.word-set-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-2)}.set-number{font-size:var(--text-lg);font-weight:var(--font-weight-bold);color:var(--color-primary-500);text-transform:uppercase;letter-spacing:.05em}.set-status{display:flex;align-items:center;gap:var(--space-2)}.lock-icon,.unlock-icon{font-size:var(--text-lg);transition:transform var(--transition-fast)}.lock-icon{color:var(--color-error)}.unlock-icon{color:var(--color-success)}.activity-card{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-xl);padding:var(--space-6);cursor:pointer;transition:all var(--transition-normal);display:flex;align-items:center;gap:var(--space-4);text-align:left;position:relative;overflow:hidden}.activity-card:hover:not(.locked){transform:translateY(-2px);border-color:var(--color-primary-300);box-shadow:var(--shadow-lg)}.activity-card.locked{opacity:.6;cursor:not-allowed;filter:grayscale(.8)}.activity-card.locked:hover{transform:none;border-color:var(--color-border-light);box-shadow:none}.youtube-btn.full-width{background:var(--color-bg-surface);border:1px solid #ff0000;border-radius:var(--radius-xl);padding:var(--space-4) var(--space-5);cursor:pointer;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:space-between;width:100%;color:var(--color-text-primary);font-weight:var(--font-weight-semibold);text-align:left;position:relative;overflow:hidden}.youtube-btn.full-width:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.1),transparent);transition:left .6s}.youtube-btn.full-width:hover:before{left:100%}.youtube-btn.full-width:hover{background:red;color:#fff;transform:translateY(-2px);box-shadow:0 8px 25px #ff00004d}.youtube-btn.full-width.watched{border-color:var(--color-success);background:var(--color-success);color:#fff}.youtube-btn.full-width.watched:hover{background:var(--color-success-dark);border-color:var(--color-success-dark);box-shadow:0 8px 25px #22c55e4d}.youtube-btn.full-width .youtube-icon{font-size:1.5rem;flex-shrink:0;margin-right:var(--space-3)}.youtube-btn.full-width .youtube-text{font-size:var(--text-base);font-weight:var(--font-weight-semibold);flex:1}.youtube-btn.full-width .youtube-arrow{font-size:1.25rem;flex-shrink:0;opacity:.8;transition:transform var(--transition-fast)}.youtube-btn.full-width:hover .youtube-arrow{transform:scale(1.2)}.youtube-btn:not(.full-width){display:none}.youtube-btn.full-width.disabled{opacity:.6;cursor:not-allowed;border-color:var(--color-border-light)!important;background:var(--color-bg-subtle)!important;color:var(--color-text-tertiary)!important;transform:none!important;box-shadow:none!important}.youtube-btn.full-width.disabled:hover{background:var(--color-bg-subtle)!important;color:var(--color-text-tertiary)!important;transform:none!important;box-shadow:none!important}.youtube-btn.full-width.disabled:before{display:none}.youtube-btn.full-width.disabled.watched{border-color:var(--color-border-light)!important;background:var(--color-bg-subtle)!important;color:var(--color-text-tertiary)!important}.video-modal-overlay{position:fixed;inset:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-4)}.video-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);width:100%;max-width:800px;max-height:90vh;overflow:hidden;box-shadow:var(--shadow-2xl);animation:modalSlideIn var(--transition-normal)}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.9) translateY(-20px)}to{opacity:1;transform:scale(1) translateY(0)}}.video-modal-header{display:flex;justify-content:space-between;align-items:center;padding:var(--space-6);border-bottom:1px solid var(--color-border-light)}.video-modal-header h3{margin:0;color:var(--color-text-primary);font-size:var(--text-xl)}.video-close-btn{background:transparent;border:none;font-size:1.5rem;cursor:pointer;color:var(--color-text-secondary);transition:color var(--transition-fast);width:40px;height:40px;border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center}.video-close-btn:hover{background:var(--color-bg-subtle);color:var(--color-text-primary)}.video-container{position:relative;width:100%;padding-bottom:56.25%;height:0}.video-container iframe{position:absolute;top:0;left:0;width:100%;height:100%;border:none}.video-modal-footer{padding:var(--space-6);border-top:1px solid var(--color-border-light);text-align:right}.video-modal-footer .btn{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));color:var(--color-text-on-primary);border:none;padding:var(--space-3) var(--space-6);border-radius:var(--radius-lg);cursor:pointer;font-size:var(--text-base);font-weight:var(--font-weight-semibold);transition:all var(--transition-normal)}.video-modal-footer .btn:hover{background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:translateY(-1px);box-shadow:var(--shadow-md)}.vocabulary-set-column .activity-card.vocabulary{background:#0ea5e90d;border:1px solid var(--color-primary-200);height:100%;min-height:140px}.vocabulary-set-column .activity-card.vocabulary:hover:not(.locked){background:#0ea5e914;border-color:var(--color-primary-300);transform:translateY(-2px);box-shadow:0 8px 25px #0ea5e926}.tests-column{display:flex;flex-direction:column}.tests-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4);height:100%}.tests-column .activity-card.test{background:var(--color-bg-surface);border:1px solid var(--color-border-light);transition:all var(--transition-normal);height:100%;min-height:120px;flex-direction:column;text-align:center;padding:var(--space-5)}.tests-column .activity-card.test:hover:not(.locked){border-color:var(--color-primary-300);transform:translateY(-2px);box-shadow:var(--shadow-md)}.tests-column .activity-card.test.en-tr{border-left:4px solid var(--color-primary-500)}.tests-column .activity-card.test.tr-en{border-left:4px solid var(--color-secondary-500)}.tests-column .activity-card.test.listening{border-left:4px solid var(--color-warning)}.tests-column .activity-card.test.pronunciation{border-left:4px solid var(--color-info)}.activity-icon{font-size:2rem;flex-shrink:0;transition:transform var(--transition-normal)}.activity-card:hover:not(.locked) .activity-icon{transform:scale(1.1)}.activity-content{flex-grow:1;min-width:0}.activity-name{color:var(--color-text-primary);margin:0 0 var(--space-1) 0;font-size:var(--text-base);font-weight:var(--font-weight-bold);line-height:var(--line-height-tight)}.activity-description{color:var(--color-text-secondary);margin:0;font-size:var(--text-xs);line-height:var(--line-height-relaxed)}.word-count{color:var(--color-primary-500);font-size:var(--text-xs);font-weight:var(--font-weight-semibold);margin-top:var(--space-2)}.test-number{color:var(--color-text-tertiary);font-size:var(--text-xs);font-weight:var(--font-weight-medium);margin-top:var(--space-1)}.activity-arrow{color:var(--color-primary-500);font-size:1.2rem;font-weight:var(--font-weight-bold);flex-shrink:0;transition:transform var(--transition-normal)}.activity-card:hover:not(.locked) .activity-arrow{transform:translate(4px)}.activity-card.locked .activity-arrow{color:var(--color-text-tertiary)}.lock-message{color:var(--color-text-tertiary);font-size:var(--text-xs);font-style:italic;margin-top:var(--space-2);line-height:var(--line-height-relaxed)}.unit-overview{width:100%;max-width:1200px;margin-top:var(--space-8)}.overview-card{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);padding:var(--space-8);max-width:400px;margin:0 auto;transition:all var(--transition-normal);box-shadow:var(--shadow-sm)}.overview-card:hover{border-color:var(--color-primary-300);box-shadow:var(--shadow-lg);transform:translateY(-2px)}.overview-card h3{color:var(--color-text-primary);margin-bottom:var(--space-6);font-size:var(--text-xl);font-weight:var(--font-weight-bold);text-align:center}.overview-stats{display:flex;flex-direction:column;gap:var(--space-4)}.overview-stats .stat-item{flex-direction:row;justify-content:space-between;background:transparent;padding:var(--space-3) 0;border-radius:0;border-bottom:1px solid var(--color-border-light)}.overview-stats .stat-item:last-child{border-bottom:none}.overview-stats .stat-item:hover{background:transparent;transform:none}.overview-stats .stat-label{text-align:left}.overview-stats .stat-value{font-size:var(--text-lg)}.no-activities{display:flex;align-items:center;justify-content:center;min-height:40vh;width:100%}.welcome-message{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-2xl);padding:var(--space-12);text-align:center;max-width:600px;margin:0 auto}.welcome-message p{color:var(--color-text-secondary);line-height:var(--line-height-relaxed);font-size:var(--text-lg)}.unit-detail-page .loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-medium);text-align:center;flex-direction:column;gap:var(--space-4)}.unit-detail-page .error{display:flex;align-items:center;justify-content:center;min-height:60vh;flex-direction:column;gap:var(--space-6);text-align:center;color:var(--color-text-primary)}.unit-detail-page .error-message{background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-xl);border-left:4px solid var(--color-error);max-width:500px;color:var(--color-text-primary)}.completion-badge{position:absolute;top:12px;right:12px;z-index:2}.completion-icon{font-size:1.5rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2));animation:bounceIn .6s ease-out}.tests-column .activity-card.test.completed{border-left:4px solid var(--color-success)!important;background:#10b9810d!important;position:relative}.tests-column .activity-card.test.completed:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--color-success);opacity:.8}.tests-column .activity-card.test.completed:hover{background:#10b98114!important;border-left-color:var(--color-success)!important}.tests-column .activity-card.test .completion-badge{position:absolute!important;top:12px!important;right:12px!important;z-index:10!important}.tests-column .activity-card.test .completion-icon{font-size:1.5rem!important;filter:drop-shadow(0 2px 4px rgba(0,0,0,.2))!important;display:block!important}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.1)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}.tests-column .activity-card.test.completed:hover .completion-icon{transform:scale(1.1);transition:transform .3s ease}.tests-column .activity-card.test.locked.completed{opacity:.8}.tests-column .activity-card.test.locked.completed .completion-icon{opacity:.7}@media (max-width: 768px){.youtube-btn.full-width{padding:var(--space-3) var(--space-4)}.youtube-btn.full-width .youtube-icon{font-size:1.25rem;margin-right:var(--space-2)}.youtube-btn.full-width .youtube-text{font-size:var(--text-sm)}.youtube-btn.full-width .youtube-arrow{font-size:1.1rem}.youtube-btn.full-width.disabled .youtube-text{font-size:var(--text-sm)}}@media (max-width: 480px){.vocabulary-set-with-video{gap:var(--space-2)}.youtube-btn.full-width{padding:var(--space-2) var(--space-3)}.youtube-btn.full-width .youtube-icon{font-size:1.1rem;margin-right:var(--space-2)}.youtube-btn.full-width .youtube-text{font-size:var(--text-xs)}.youtube-btn.full-width .youtube-arrow{font-size:1rem}.youtube-btn.full-width.disabled .youtube-text{font-size:var(--text-xs)}}@media (max-width: 1024px){.vocabulary-group-row{grid-template-columns:1fr 1.5fr;gap:var(--space-6);padding:var(--space-6)}}@media (max-width: 768px){.unit-detail-page{padding:var(--space-4) var(--space-3)}.unit-detail-page .page-header{flex-direction:column;text-align:center;gap:var(--space-4);align-items:center}.unit-detail-page .back-btn{order:1;align-self:center;margin-bottom:var(--space-2)}.unit-header-info{min-width:auto;width:100%;order:2}.unit-stats{text-align:center;order:3}.vocabulary-group-row{grid-template-columns:1fr;gap:var(--space-6);padding:var(--space-6)}.tests-grid{grid-template-columns:1fr}.progress-stats{grid-template-columns:1fr;gap:var(--space-4)}.overview-card{max-width:100%}.activity-card{padding:var(--space-5)}.welcome-message{padding:var(--space-8) var(--space-6)}.video-modal{margin:var(--space-4);max-height:80vh}}@media (max-width: 480px){.vocabulary-set-column .activity-card.vocabulary{min-height:120px}.tests-column .activity-card.test{min-height:100px;padding:var(--space-4)}.activity-name{font-size:var(--text-sm)}.activity-description{font-size:var(--text-xs)}.video-modal-header,.video-modal-footer{padding:var(--space-4)}}.unit-detail-page{animation:slideInUp .5s ease-out}.vocabulary-group-row.highlight-completed{animation:highlightPulse 2s ease-in-out;border-color:var(--color-success)!important;box-shadow:0 0 0 3px #22c55e4d,var(--shadow-xl)!important;position:relative;z-index:10}@keyframes highlightPulse{0%{box-shadow:0 0 #22c55eb3,var(--shadow-xl)}50%{box-shadow:0 0 0 10px #22c55e00,var(--shadow-xl)}to{box-shadow:0 0 #22c55e00,var(--shadow-xl)}}.performance-indicator{display:inline-block;margin-left:var(--space-2);padding:var(--space-1) var(--space-2);background:var(--color-bg-subtle);border-radius:var(--radius-sm);font-size:var(--text-xs);color:var(--color-text-tertiary);font-family:monospace}.unit-page{width:100%;min-height:100vh;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;align-items:center;background:var(--color-bg-primary);position:relative}.unit-page .page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4);width:100%;max-width:800px}.unit-page .page-header h1{margin:0;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:var(--font-weight-extrabold);line-height:var(--line-height-tight);letter-spacing:var(--letter-spacing-tight)}.unit-progress{font-size:var(--text-base);font-weight:var(--font-weight-medium)}.progress-container{width:100%;max-width:800px;margin-bottom:var(--space-8);background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-2xl);border:1px solid var(--color-border-light);box-shadow:var(--shadow-sm)}.progress-info{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4);color:var(--color-text-primary);font-weight:var(--font-weight-medium)}.progress-text{font-size:var(--text-lg);font-weight:var(--font-weight-semibold)}.progress-stats{font-size:var(--text-sm);opacity:.9}.progress-bar{width:100%;height:12px;background:var(--color-bg-subtle);border-radius:var(--radius-full);overflow:hidden;margin-bottom:var(--space-3);position:relative}.progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary-500),var(--color-success));border-radius:var(--radius-full);transition:width .8s cubic-bezier(.4,0,.2,1);position:relative;overflow:hidden}.progress-fill:after{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.3),transparent);animation:shimmer 2s infinite}.progress-details{text-align:center;color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-medium)}.word-container{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);box-shadow:var(--shadow-xl);margin-bottom:var(--space-6);min-height:400px;display:flex;flex-direction:column;justify-content:center;width:100%;max-width:800px;color:var(--color-text-primary);border:1px solid var(--color-border-light);position:relative;overflow:hidden}.word-container:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary-500),var(--color-secondary-500))}.card{text-align:center;flex-grow:1;display:flex;flex-direction:column;justify-content:center;min-height:300px;gap:var(--space-6)}.word-section{margin-bottom:var(--space-6);min-height:80px;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4)}.english-word{font-size:clamp(2rem,6vw,3.5rem);color:var(--color-text-primary);font-weight:var(--font-weight-extrabold);margin:0;line-height:1.1;word-break:break-word;padding:0 var(--space-4)}.example-section,.meaning-section{margin:var(--space-4) 0;padding:var(--space-6);border-radius:var(--radius-xl);background:var(--color-bg-subtle);border:1px solid transparent;min-height:80px;display:flex;flex-direction:column;justify-content:center;opacity:0;transform:translateY(20px);transition:all .5s cubic-bezier(.4,0,.2,1)}.example-section.visible,.meaning-section.visible{opacity:1;transform:translateY(0)}.example-section.visible{border-color:var(--color-primary-200);background:#0ea5e90d}.meaning-section.visible{border-color:var(--color-success);background:#10b9810d}.label{font-weight:var(--font-weight-bold);color:var(--color-text-secondary);margin-bottom:var(--space-2);font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em}.example{font-size:var(--text-lg);color:var(--color-text-secondary);font-style:italic;margin:0;line-height:var(--line-height-relaxed);word-break:break-word;padding:0 var(--space-2)}.meaning{font-size:var(--text-2xl);color:var(--color-success);font-weight:var(--font-weight-bold);margin:0;line-height:var(--line-height-tight);word-break:break-word;padding:0 var(--space-2)}.controls{display:flex;gap:var(--space-4);margin-top:var(--space-8);flex-wrap:wrap}.nav-btn,.next-btn{flex:1;min-width:140px}.next-btn{position:relative;overflow:hidden}.next-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .6s}.next-btn:hover:before{left:100%}.speaker-controls{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-2)}.auto-speak-btn{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:var(--space-2) var(--space-3);cursor:pointer;font-size:var(--text-sm);transition:all var(--transition-normal);color:var(--color-text-primary);height:44px;display:flex;align-items:center;justify-content:center;white-space:nowrap;font-weight:var(--font-weight-medium);min-width:80px}.auto-speak-btn:hover{border-color:var(--color-primary-300);transform:scale(1.05)}.auto-speak-btn.active:hover{background:var(--color-primary-600);border-color:var(--color-primary-600)}.example-header{display:flex;flex-direction:column;align-items:center;gap:var(--space-3);margin-bottom:var(--space-3)}@media (max-width: 768px){.speaker-controls{flex-direction:column;gap:var(--space-2)}.auto-speak-btn{min-width:70px;padding:var(--space-2) var(--space-2);font-size:var(--text-xs)}}@media (max-width: 480px){.speaker-controls{gap:var(--space-2)}.auto-speak-btn{min-width:65px;font-size:var(--text-xs)}}.speak-btn{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));border:none;border-radius:var(--radius-full);width:60px;height:60px;cursor:pointer;font-size:1.5rem;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-md)}.speak-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:scale(1.1);box-shadow:var(--shadow-lg)}.speak-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.speak-btn.speaking{background:linear-gradient(135deg,var(--color-secondary-500),var(--color-secondary-600));animation:pulse 1.5s infinite}.speak-btn.small{width:50px;height:50px;font-size:1.2rem}.hint-container{min-height:60px;display:flex;align-items:center;justify-content:center;width:100%;max-width:800px;margin-top:var(--space-4)}.hint{text-align:center;color:var(--color-text-primary);font-size:var(--text-base);background:var(--color-bg-surface);padding:var(--space-4) var(--space-6);border-radius:var(--radius-xl);border:1px solid var(--color-border-light);font-weight:var(--font-weight-medium);width:100%;line-height:var(--line-height-relaxed);box-shadow:var(--shadow-sm)}.completion-modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-6);animation:fadeIn .3s ease-out}.completion-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);max-width:500px;width:100%;box-shadow:var(--shadow-2xl);border:1px solid var(--color-primary-300);animation:modalSlideIn .4s cubic-bezier(.4,0,.2,1)}.modal-header{text-align:center;margin-bottom:var(--space-6)}.modal-icon{font-size:4rem;margin-bottom:var(--space-4);animation:bounce 1s infinite alternate}.modal-title{color:var(--color-text-primary);font-size:var(--text-3xl);margin:0;font-weight:var(--font-weight-extrabold)}.modal-content{margin-bottom:var(--space-8)}.completion-message{text-align:center;color:var(--color-text-secondary);font-size:var(--text-lg);margin-bottom:var(--space-6);line-height:var(--line-height-relaxed)}.completion-stats{background:var(--color-bg-subtle);border-radius:var(--radius-xl);padding:var(--space-6);margin-bottom:var(--space-6);border:1px solid var(--color-border-light)}.completion-stats .stat-item{display:flex;justify-content:space-between;align-items:center;padding:var(--space-2) 0;border-bottom:1px solid var(--color-border-light)}.completion-stats .stat-item:last-child{border-bottom:none}.completion-stats .stat-label{color:var(--color-text-secondary);font-weight:var(--font-weight-medium)}.completion-stats .stat-value{color:var(--color-primary-500);font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.achievement-badge{display:flex;align-items:center;justify-content:center;gap:var(--space-3);background:linear-gradient(135deg,var(--color-primary-500),var(--color-secondary-500));color:#fff;padding:var(--space-4) var(--space-6);border-radius:var(--radius-full);margin-top:var(--space-4)}.badge-icon{font-size:1.5rem}.badge-text{font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.modal-actions{display:flex;gap:var(--space-4);justify-content:center}.modal-btn{flex:1;max-width:160px;display:flex;align-items:center;justify-content:center;gap:var(--space-2)}.unit-page .loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-medium);text-align:center;flex-direction:column;gap:var(--space-4)}.unit-page .error{display:flex;align-items:center;justify-content:center;min-height:60vh;flex-direction:column;gap:var(--space-6);text-align:center;color:var(--color-text-primary)}.unit-page .error-message{background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-xl);border-left:4px solid var(--color-error);max-width:500px;color:var(--color-text-primary)}.unit-page .speaker-controls{display:flex!important;align-items:center;gap:var(--space-3);margin-top:var(--space-2)}.unit-page .auto-speak-btn{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:var(--space-2) var(--space-3);cursor:pointer;font-size:var(--text-sm);transition:all var(--transition-normal);color:var(--color-text-primary);height:44px;display:flex!important;align-items:center;justify-content:center;white-space:nowrap;font-weight:var(--font-weight-medium);min-width:80px}.unit-page .auto-speak-btn:hover{border-color:var(--color-primary-300);transform:scale(1.05)}.unit-page .auto-speak-btn.active{background:var(--color-primary-500);color:#fff;border-color:var(--color-primary-500)}.unit-page .auto-speak-btn.active:hover{background:var(--color-primary-600);border-color:var(--color-primary-600)}.welcome-message{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);text-align:center;box-shadow:var(--shadow-xl);min-height:350px;display:flex;flex-direction:column;justify-content:center;width:100%;max-width:800px;color:var(--color-text-primary);border:1px solid var(--color-border-light)}.welcome-message h2{color:var(--color-text-primary);margin-bottom:var(--space-4);font-size:var(--text-2xl);font-weight:var(--font-weight-bold)}.welcome-message p{color:var(--color-text-secondary);line-height:var(--line-height-relaxed);margin-bottom:var(--space-6)}@media (max-width: 768px){.unit-page{padding:var(--space-4) var(--space-3)}.unit-page .page-header{flex-direction:column;text-align:center;gap:var(--space-3)}.progress-container{padding:var(--space-4)}.word-container{padding:var(--space-5);min-height:250px}.card{min-height:180px;gap:var(--space-3)}.example-section,.meaning-section{padding:var(--space-4)}.controls{flex-direction:column}.nav-btn,.next-btn{min-width:auto}.speak-btn{width:55px;height:55px;font-size:1.3rem}.speak-btn.small{width:45px;height:45px;font-size:1.1rem}.completion-modal{padding:var(--space-6)}.modal-actions{flex-direction:column}.modal-btn{max-width:none}.unit-page .speaker-controls{flex-direction:column;gap:var(--space-2)}.unit-page .auto-speak-btn{min-width:70px;padding:var(--space-2);font-size:var(--text-xs)}}@media (max-width: 480px){.english-word{font-size:clamp(1.5rem,7vw,2.2rem)}.example{font-size:var(--text-base)}.meaning{font-size:var(--text-xl)}.page-header{margin-bottom:var(--space-4)}.progress-container{padding:var(--space-3);margin-bottom:var(--space-4)}.word-container{padding:var(--space-4);min-height:200px;margin-bottom:var(--space-4)}.card{min-height:140px;gap:var(--space-2)}.example-section,.meaning-section{margin:var(--space-2) 0;min-height:60px}.progress-info{flex-direction:column;gap:var(--space-2);text-align:center}.hint{padding:var(--space-3) var(--space-4);font-size:var(--text-sm)}.completion-modal{padding:var(--space-3);max-width:95%}.modal-icon{font-size:2.5rem;margin-bottom:var(--space-2)}.modal-title{font-size:1.125rem}.completion-message{font-size:var(--text-sm);margin-bottom:var(--space-3)}.completion-stats{padding:var(--space-2);margin-bottom:var(--space-3)}.completion-stats .stat-item{padding:var(--space-1) 0}.completion-stats .stat-value{font-size:var(--text-base)}.achievement-badge{padding:var(--space-2) var(--space-3);margin-top:var(--space-2)}.badge-icon{font-size:1.15rem}.badge-text{font-size:var(--text-sm)}}.unit-page{animation:slideInUp .5s ease-out}.quiz-start-container{width:100%;max-width:800px;margin-top:var(--space-8);display:flex;justify-content:center}.quiz-start-btn{width:100%;max-width:320px}.ad-section{width:100%;min-height:100px;display:flex;justify-content:center;align-items:center;margin:var(--space-8) 0;overflow:hidden}.adsense-ad{width:100%;display:flex;justify-content:center;min-height:100px}.quiz-page{width:100%;min-height:100vh;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;align-items:center;background:var(--color-bg-primary);position:relative}.quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4);width:100%;max-width:800px;text-align:center}.quiz-header h1{margin:0;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:var(--font-weight-extrabold);letter-spacing:var(--letter-spacing-tight);line-height:var(--line-height-tight);flex:1}.debug-info{position:fixed;top:5px;right:5px;background:#000c;color:#fff;padding:2px 6px;border-radius:4px;font-size:10px;z-index:9999}.quiz-stats{display:flex;gap:var(--space-4);font-weight:var(--font-weight-semibold);flex-wrap:wrap;justify-content:center}.quiz-stats span{background:var(--color-bg-surface);padding:var(--space-2) var(--space-3);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);box-shadow:var(--shadow-xs)}.quiz-page .progress-container{width:100%;max-width:800px;margin-bottom:var(--space-8)}.quiz-page .progress-bar{width:100%;height:8px;background:var(--color-bg-subtle);border-radius:var(--radius-full);overflow:hidden}.quiz-page .progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary-500),var(--color-success));border-radius:var(--radius-full);transition:width .5s ease}.quiz-content{display:grid;grid-template-columns:1fr;gap:var(--space-8);margin-top:var(--space-4);width:100%;max-width:800px}@media (min-width: 768px){.quiz-content{grid-template-columns:1fr 1fr;gap:var(--space-12)}}.quiz-word-section{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border:1px solid var(--color-border-light);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.quiz-word-section:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary-500),var(--color-secondary-500))}.quiz-word-section .english-word{font-size:clamp(2rem,5vw,3rem);color:var(--color-text-primary);margin-bottom:var(--space-6);font-weight:var(--font-weight-extrabold);line-height:var(--line-height-tight);word-break:break-word}.word-with-speaker{display:flex;align-items:center;justify-content:center;gap:var(--space-4);flex-wrap:wrap}.listening-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:var(--space-4);min-height:120px;width:100%}.listening-icon{font-size:3rem;opacity:.7;color:var(--color-primary-500)}.listening-text{color:var(--color-text-secondary);font-size:var(--text-lg);font-weight:var(--font-weight-medium);margin:0;text-align:center}.speaker-controls{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-4)}.quiz-page .speak-btn{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));border:none;border-radius:var(--radius-full);width:50px;height:50px;cursor:pointer;font-size:1.3rem;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-md)}.quiz-page .speak-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:scale(1.1);box-shadow:var(--shadow-lg)}.quiz-page .speak-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.quiz-page .speak-btn.speaking{background:linear-gradient(135deg,var(--color-secondary-500),var(--color-secondary-600));animation:pulse 1.5s infinite}.auto-speak-btn{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-lg);padding:var(--space-2) var(--space-4);cursor:pointer;font-size:var(--text-sm);transition:all var(--transition-normal);color:var(--color-text-primary);height:44px;display:flex;align-items:center;justify-content:center;white-space:nowrap;font-weight:var(--font-weight-medium)}.auto-speak-btn.active{background:var(--color-primary-500);color:#fff;border-color:var(--color-primary-500)}.auto-speak-btn:hover{transform:scale(1.05);border-color:var(--color-primary-300)}.quiz-options{display:grid;grid-template-columns:1fr;gap:var(--space-4)}.quiz-option{background:var(--color-bg-surface);border:1px solid var(--color-border-light);border-radius:var(--radius-xl);padding:var(--space-5) var(--space-6);font-size:var(--text-base);cursor:pointer;transition:all var(--transition-normal);color:var(--color-text-primary);text-align:left;font-weight:var(--font-weight-medium);position:relative;overflow:hidden;box-shadow:var(--shadow-xs);min-height:52px}.quiz-option:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:var(--color-primary-500);transform:scaleX(0);transition:transform var(--transition-normal)}@media (hover: hover){.quiz-option:hover:not(:disabled){border-color:var(--color-primary-300);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.quiz-option:hover:not(:disabled):before{transform:scaleX(1)}}.quiz-option:disabled{cursor:not-allowed;opacity:.7}.hint-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-3)}.hint-section{margin-top:var(--space-6);padding:var(--space-4);background:#0ea5e914;border-radius:var(--radius-lg);border:1px solid var(--color-primary-200);width:100%}.hint-label{font-weight:var(--font-weight-bold);color:var(--color-primary-500);margin-bottom:0;font-size:var(--text-sm);text-transform:uppercase;letter-spacing:.05em}.hint-example{color:var(--color-text-secondary);font-style:italic;margin:0;line-height:var(--line-height-relaxed);word-break:break-word;font-size:var(--text-base);padding:var(--space-2) 0}.example-speak-btn{background:linear-gradient(135deg,var(--color-secondary-500),var(--color-secondary-600));border:none;border-radius:var(--radius-full);width:40px;height:40px;cursor:pointer;font-size:1.1rem;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-sm)}.example-speak-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--color-secondary-600),var(--color-secondary-700));transform:scale(1.1);box-shadow:var(--shadow-md)}.example-speak-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.example-speak-btn.speaking{background:linear-gradient(135deg,var(--color-warning),#d97706);animation:pulse 1.5s infinite}.lives-indicator{display:flex;justify-content:center;gap:var(--space-2);margin-top:var(--space-8);width:100%;max-width:800px}.life{font-size:1.8rem;transition:all var(--transition-normal)}.life.active{color:var(--color-error);transform:scale(1.1)}.life.lost{opacity:.3;transform:scale(.8);color:var(--color-text-tertiary)}.quiz-modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-6);animation:fadeIn .3s ease-out}.quiz-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);max-width:500px;width:100%;box-shadow:var(--shadow-2xl);border:1px solid var(--color-error);animation:modalSlideIn .4s cubic-bezier(.4,0,.2,1)}.quiz-modal .modal-header{text-align:center;margin-bottom:var(--space-6)}.quiz-modal .modal-icon{font-size:3rem;margin-bottom:var(--space-4)}.quiz-modal .modal-title{color:var(--color-text-primary);font-size:var(--text-2xl);margin:0;font-weight:var(--font-weight-bold)}.quiz-modal .modal-content{margin-bottom:var(--space-6)}.quiz-modal .modal-content p{color:var(--color-text-secondary);line-height:var(--line-height-relaxed);text-align:center;margin-bottom:var(--space-4)}.quiz-modal .modal-actions{display:flex;gap:var(--space-4);justify-content:center}.quiz-modal .modal-btn{min-width:120px}.quiz-page .completion-modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-6);animation:fadeIn .3s ease-out}.quiz-page .completion-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);max-width:500px;width:100%;box-shadow:var(--shadow-2xl);border:1px solid var(--color-primary-300);animation:modalSlideIn .4s cubic-bezier(.4,0,.2,1)}.quiz-page .completion-modal .modal-header{text-align:center;margin-bottom:var(--space-6)}.quiz-page .completion-modal .modal-icon{font-size:4rem;margin-bottom:var(--space-4);animation:bounce 1s infinite alternate}.quiz-page .completion-modal .modal-title{color:var(--color-text-primary);font-size:var(--text-3xl);margin:0;font-weight:var(--font-weight-extrabold)}.quiz-page .completion-modal .modal-content{margin-bottom:var(--space-8)}.quiz-page .completion-stats{background:var(--color-bg-subtle);border-radius:var(--radius-xl);padding:var(--space-6);margin-bottom:var(--space-6);border:1px solid var(--color-border-light);display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-4)}.quiz-page .completion-stats .stat-item{display:flex;flex-direction:column;align-items:center;gap:var(--space-2);padding:var(--space-3);border-radius:var(--radius-lg);background:var(--color-bg-surface)}.quiz-page .completion-stats .stat-label{color:var(--color-text-secondary);font-size:var(--text-sm);font-weight:var(--font-weight-medium);text-align:center}.quiz-page .completion-stats .stat-value{color:var(--color-primary-500);font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.quiz-page .achievement-badge{display:flex;align-items:center;justify-content:center;gap:var(--space-3);background:linear-gradient(135deg,var(--color-primary-500),var(--color-secondary-500));color:#fff;padding:var(--space-4) var(--space-6);border-radius:var(--radius-full);margin-top:var(--space-4)}.quiz-page .badge-icon{font-size:1.5rem}.quiz-page .badge-text{font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.quiz-page .modal-actions{display:flex;gap:var(--space-4);justify-content:center}.quiz-page .modal-btn{flex:1;max-width:160px;display:flex;align-items:center;justify-content:center;gap:var(--space-2)}.quiz-page .loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-medium);text-align:center;flex-direction:column;gap:var(--space-4)}.quiz-page .error{display:flex;align-items:center;justify-content:center;min-height:60vh;flex-direction:column;gap:var(--space-6);text-align:center;color:var(--color-text-primary)}.quiz-page .error-message{background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-xl);border-left:4px solid var(--color-error);max-width:500px;color:var(--color-text-primary)}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.1)}to{transform:scale(1)}}@media (max-width: 768px){.quiz-page{padding:var(--space-4) var(--space-3)}.quiz-header{flex-direction:column;text-align:center;gap:var(--space-4);align-items:center}.quiz-header h1{order:2}.quiz-stats{order:3;justify-content:center}.quiz-page .back-btn{order:1;align-self:center;margin-bottom:var(--space-2)}.quiz-content{grid-template-columns:1fr;gap:var(--space-6)}.quiz-word-section{padding:var(--space-6)}.quiz-options{gap:var(--space-3)}.quiz-option{padding:var(--space-4) var(--space-5)}.speaker-controls{flex-direction:column;gap:var(--space-3)}.auto-speak-btn{width:100%;max-width:200px}.quiz-page .completion-stats{grid-template-columns:1fr}.quiz-page .modal-actions{flex-direction:column}.quiz-page .modal-btn{max-width:none}}@media (max-width: 480px){.quiz-word-section .english-word{font-size:clamp(1.5rem,8vw,2.5rem)}.listening-icon{font-size:2.5rem}.listening-text{font-size:var(--text-base)}.quiz-stats{gap:var(--space-2)}.quiz-stats span{font-size:var(--text-sm);padding:var(--space-1) var(--space-2)}.lives-indicator{gap:var(--space-1)}.life{font-size:1.5rem}.quiz-page .completion-modal{padding:var(--space-4);max-width:95%}.quiz-page .completion-modal .modal-icon{font-size:2.5rem;margin-bottom:var(--space-2)}.quiz-page .completion-modal .modal-title{font-size:1.25rem}.quiz-page .completion-modal .modal-content{margin-bottom:var(--space-4)}.quiz-page .completion-stats{padding:var(--space-2);margin-bottom:var(--space-3);gap:var(--space-2)}.quiz-page .completion-stats .stat-item{padding:var(--space-1) var(--space-2);width:100%}.quiz-page .completion-stats .stat-value{font-size:var(--text-base)}.quiz-page .achievement-badge{padding:var(--space-2) var(--space-3);margin-top:var(--space-2)}.quiz-page .badge-icon{font-size:1.2rem}.quiz-page .badge-text{font-size:var(--text-base)}}.quiz-page{animation:slideInUp .5s ease-out}.pronunciation-test-page{width:100%;min-height:100vh;padding:var(--space-6) var(--space-4);display:flex;flex-direction:column;align-items:center;background:var(--color-bg-primary);position:relative}.pronunciation-test-page .quiz-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-8);flex-wrap:wrap;gap:var(--space-4);width:100%;max-width:800px;text-align:center}.pronunciation-test-page .quiz-header h1{margin:0;font-size:clamp(1.75rem,4vw,2.5rem);font-weight:var(--font-weight-extrabold);letter-spacing:var(--letter-spacing-tight);line-height:var(--line-height-tight);flex:1}.pronunciation-test-page .quiz-stats{display:flex;gap:var(--space-4);font-weight:var(--font-weight-semibold);flex-wrap:wrap;justify-content:center}.pronunciation-test-page .quiz-stats span{background:var(--color-bg-surface);padding:var(--space-2) var(--space-3);border-radius:var(--radius-lg);border:1px solid var(--color-border-light);box-shadow:var(--shadow-xs)}.pronunciation-test-page .progress-container{width:100%;max-width:800px;margin-bottom:var(--space-8)}.pronunciation-test-page .progress-bar{width:100%;height:8px;background:var(--color-bg-subtle);border-radius:var(--radius-full);overflow:hidden}.pronunciation-test-page .progress-fill{height:100%;background:linear-gradient(90deg,var(--color-primary-500),var(--color-success));border-radius:var(--radius-full);transition:width .5s ease}.pronunciation-test-page .quiz-content{display:flex;flex-direction:column;gap:var(--space-8);margin-top:var(--space-4);width:100%;max-width:800px;text-align:center}.pronunciation-test-page .quiz-word-section{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);display:flex;flex-direction:column;justify-content:center;align-items:center;text-align:center;border:1px solid var(--color-border-light);position:relative;overflow:hidden;box-shadow:var(--shadow-sm)}.pronunciation-test-page .quiz-word-section:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:linear-gradient(90deg,var(--color-primary-500),var(--color-secondary-500))}.pronunciation-test-page .word-with-speaker{display:flex;align-items:center;justify-content:center;gap:var(--space-6);flex-wrap:wrap;margin-bottom:var(--space-6)}.pronunciation-test-page .english-word{font-size:clamp(2.5rem,6vw,4rem);color:var(--color-text-primary);font-weight:var(--font-weight-extrabold);line-height:var(--line-height-tight);word-break:break-word;text-shadow:0 2px 8px rgba(0,0,0,.1)}.pronunciation-test-page .speak-btn{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));border:none;border-radius:var(--radius-full);width:70px;height:70px;cursor:pointer;font-size:1.8rem;transition:all var(--transition-normal);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-lg);flex-shrink:0}.pronunciation-test-page .speak-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:scale(1.1);box-shadow:var(--shadow-xl)}.pronunciation-test-page .speak-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.pronunciation-test-page .speak-btn.speaking{background:linear-gradient(135deg,var(--color-secondary-500),var(--color-secondary-600));animation:pulse 1.5s infinite}.pronunciation-feedback{margin-top:var(--space-6);width:100%;animation:slideInUp .5s ease-out}.feedback{display:flex;align-items:center;justify-content:center;gap:var(--space-6);padding:var(--space-6);border-radius:var(--radius-2xl);margin:var(--space-4) 0;text-align:left;position:relative;overflow:hidden}.feedback:before{content:"";position:absolute;top:0;left:0;right:0;height:3px;background:inherit;opacity:.8}.feedback.correct{background:#10b9811a;border:1px solid var(--color-success)}.feedback.correct:before{background:var(--color-success)}.feedback.incorrect{background:#ef44441a;border:1px solid var(--color-error)}.feedback.incorrect:before{background:var(--color-error)}.feedback-icon{font-size:2.5rem;flex-shrink:0;animation:bounceIn .6s ease-out}.feedback-text{flex-grow:1}.feedback-text p{margin:0;line-height:var(--line-height-relaxed)}.feedback-text p:first-child{font-weight:var(--font-weight-bold);font-size:var(--text-lg);color:var(--color-text-primary);margin-bottom:var(--space-2)}.user-answer{color:var(--color-text-secondary);font-size:var(--text-base)!important;font-style:italic;margin-top:var(--space-2)!important;background:#0000000d;padding:var(--space-2) var(--space-3);border-radius:var(--radius-md);display:inline-block}.correct-answer-prompt{background:#3b82f61a;border:1px solid var(--color-info);border-radius:var(--radius-xl);padding:var(--space-6);margin:var(--space-4) 0;text-align:center;animation:slideInUp .5s ease-out .2s both}.correct-answer-prompt p{margin:var(--space-2) 0;color:var(--color-text-primary);font-size:var(--text-base);line-height:var(--line-height-relaxed)}.correct-answer-prompt p:first-child{font-weight:var(--font-weight-bold);font-size:var(--text-lg);color:var(--color-info)}.pronunciation-actions{display:flex;gap:var(--space-4);justify-content:center;margin-top:var(--space-4);flex-wrap:wrap}.pronunciation-controls{display:flex;flex-direction:column;align-items:center;gap:var(--space-6);margin-top:var(--space-8);padding:var(--space-6);background:var(--color-bg-surface);border-radius:var(--radius-2xl);border:1px solid var(--color-border-light);box-shadow:var(--shadow-sm)}.record-btn{background:linear-gradient(135deg,var(--color-primary-500),var(--color-primary-600));color:#fff;border:none;border-radius:var(--radius-2xl);padding:var(--space-5) var(--space-8);font-size:var(--text-lg);font-weight:var(--font-weight-semibold);cursor:pointer;transition:all var(--transition-normal);display:flex;align-items:center;gap:var(--space-3);position:relative;overflow:hidden}.record-btn:before{content:"";position:absolute;top:0;left:-100%;width:100%;height:100%;background:linear-gradient(90deg,transparent,rgba(255,255,255,.2),transparent);transition:left .6s}.record-btn:hover:not(:disabled){background:linear-gradient(135deg,var(--color-primary-600),var(--color-primary-700));transform:scale(1.05);box-shadow:0 12px 30px #0ea5e966}.record-btn:hover:not(:disabled):before{left:100%}.record-btn:disabled{background:var(--color-bg-subtle);color:var(--color-text-tertiary);cursor:not-allowed;transform:none}.record-btn.large{padding:var(--space-6) var(--space-10);font-size:var(--text-xl);width:100%;max-width:320px;justify-content:center}.record-btn.listening{background:linear-gradient(135deg,var(--color-secondary-500),var(--color-secondary-600));animation:pulse 2s infinite}.record-btn.listening:after{content:"";position:absolute;inset:-2px;background:linear-gradient(135deg,var(--color-secondary-500),transparent);border-radius:inherit;animation:glow 2s infinite;z-index:-1}.record-icon{font-size:1.8rem}.record-text{font-weight:var(--font-weight-semibold);font-size:inherit}.instruction{color:var(--color-text-secondary);font-size:var(--text-lg);margin:0;text-align:center;line-height:var(--line-height-relaxed);max-width:500px}.instruction-help{color:var(--color-primary-500);font-size:var(--text-base);margin:var(--space-2) 0 0 0;font-weight:var(--font-weight-semibold);text-align:center;animation:fadeInOut 2s infinite}.next-button-container{margin-top:var(--space-8);animation:slideInUp .5s ease-out}.auto-next-message{text-align:center;padding:var(--space-6);background:#10b9811a;border:1px solid var(--color-success);border-radius:var(--radius-2xl);margin:var(--space-4) 0}.auto-next-message p{color:var(--color-text-primary);font-size:var(--text-lg);font-weight:var(--font-weight-semibold);margin:0;line-height:var(--line-height-relaxed)}.success-icon{font-size:2.5rem;margin-bottom:var(--space-3);animation:bounce 1s infinite}.pronunciation-test-page .completion-modal-overlay{position:fixed;inset:0;background:#000c;-webkit-backdrop-filter:blur(8px);backdrop-filter:blur(8px);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal);padding:var(--space-6);animation:fadeIn .3s ease-out}.pronunciation-test-page .completion-modal{background:var(--color-bg-surface);border-radius:var(--radius-2xl);padding:var(--space-8);max-width:500px;width:100%;box-shadow:var(--shadow-2xl);border:1px solid var(--color-primary-300);animation:modalSlideIn .4s cubic-bezier(.4,0,.2,1)}.pronunciation-test-page .completion-modal .modal-header{text-align:center;margin-bottom:var(--space-6)}.pronunciation-test-page .completion-modal .modal-icon{font-size:4rem;margin-bottom:var(--space-4);animation:bounce 1s infinite alternate}.pronunciation-test-page .completion-modal .modal-title{color:var(--color-text-primary);font-size:var(--text-3xl);margin:0;font-weight:var(--font-weight-extrabold)}.pronunciation-test-page .completion-modal .modal-content{margin-bottom:var(--space-8)}.pronunciation-test-page .completion-stats{background:var(--color-bg-subtle);border-radius:var(--radius-xl);padding:var(--space-6);margin-bottom:var(--space-6);border:1px solid var(--color-border-light)}.pronunciation-test-page .completion-stats .stat-item{display:flex;justify-content:space-between;align-items:center;padding:var(--space-3) 0;border-bottom:1px solid var(--color-border-light)}.pronunciation-test-page .completion-stats .stat-item:last-child{border-bottom:none}.pronunciation-test-page .completion-stats .stat-label{color:var(--color-text-secondary);font-weight:var(--font-weight-medium)}.pronunciation-test-page .completion-stats .stat-value{color:var(--color-primary-500);font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.pronunciation-test-page .achievement-badge{display:flex;align-items:center;justify-content:center;gap:var(--space-3);background:linear-gradient(135deg,var(--color-primary-500),var(--color-secondary-500));color:#fff;padding:var(--space-4) var(--space-6);border-radius:var(--radius-full);margin-top:var(--space-4)}.pronunciation-test-page .badge-icon{font-size:1.5rem}.pronunciation-test-page .badge-text{font-weight:var(--font-weight-bold);font-size:var(--text-lg)}.pronunciation-test-page .modal-actions{display:flex;gap:var(--space-4);justify-content:center}.pronunciation-test-page .modal-btn{flex:1;max-width:160px;display:flex;align-items:center;justify-content:center;gap:var(--space-2)}.pronunciation-test-page .loading{display:flex;align-items:center;justify-content:center;min-height:60vh;color:var(--color-text-primary);font-size:var(--text-xl);font-weight:var(--font-weight-medium);text-align:center;flex-direction:column;gap:var(--space-4)}.pronunciation-test-page .error{display:flex;align-items:center;justify-content:center;min-height:60vh;flex-direction:column;gap:var(--space-6);text-align:center;color:var(--color-text-primary)}.pronunciation-test-page .error-message{background:var(--color-bg-surface);padding:var(--space-6);border-radius:var(--radius-xl);border-left:4px solid var(--color-error);max-width:500px;color:var(--color-text-primary)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes modalSlideIn{0%{opacity:0;transform:scale(.9) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}@keyframes bounce{0%{transform:scale(1)}to{transform:scale(1.1)}}@keyframes pulse{0%{transform:scale(1)}50%{transform:scale(1.05)}to{transform:scale(1)}}@keyframes glow{0%,to{opacity:.5}50%{opacity:.8}}@keyframes bounceIn{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}@keyframes slideInUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInOut{0%,to{opacity:.7}50%{opacity:1}}@media (max-width: 768px){.pronunciation-test-page{padding:var(--space-4) var(--space-3)}.pronunciation-test-page .quiz-header{flex-direction:column;text-align:center;gap:var(--space-4);align-items:center}.pronunciation-test-page .quiz-header h1{order:2}.pronunciation-test-page .quiz-stats{order:3;justify-content:center}.pronunciation-test-page .back-btn{order:1;align-self:center;margin-bottom:var(--space-2)}.pronunciation-test-page .quiz-word-section{padding:var(--space-6)}.pronunciation-test-page .word-with-speaker{gap:var(--space-4);flex-direction:column}.pronunciation-test-page .english-word{font-size:clamp(2rem,8vw,3rem)}.pronunciation-test-page .speak-btn{width:60px;height:60px;font-size:1.5rem}.record-btn.large{max-width:280px;padding:var(--space-5) var(--space-8);font-size:var(--text-lg)}.feedback{flex-direction:column;text-align:center;gap:var(--space-4);padding:var(--space-5)}.pronunciation-actions{flex-direction:column;gap:var(--space-3)}.pronunciation-test-page .modal-actions{flex-direction:column}.pronunciation-test-page .modal-btn{max-width:none}}@media (max-width: 480px){.pronunciation-test-page .english-word{font-size:clamp(1.75rem,10vw,2.5rem)}.record-btn.large{max-width:240px;padding:var(--space-4) var(--space-6);font-size:var(--text-base)}.instruction{font-size:var(--text-base)}.instruction-help{font-size:var(--text-sm)}.pronunciation-test-page .quiz-stats{gap:var(--space-2)}.pronunciation-test-page .quiz-stats span{font-size:var(--text-sm);padding:var(--space-1) var(--space-2)}}.pronunciation-test-page{animation:slideInUp .5s ease-out}.cookie-policy-page{width:100%;min-height:100vh;padding:var(--space-6) 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