:root,[data-theme=light]{--color-primary: #2C5F8D;--color-primary-light: #3F7CB5;--color-primary-subtle: #E8EFF6;--color-primary-text: #FFFFFF;--color-secondary: #1A8A92;--color-secondary-light: #E8F7F8;--color-success: #27AE60;--color-success-bg: #EAFAF1;--color-error: #E74C3C;--color-error-bg: #FDECEA;--color-warning: #F39C12;--color-warning-bg: #FEF9E7;--color-bg: #FFFFFF;--color-bg-secondary: #F7F8FA;--color-bg-tertiary: #ECEEF2;--color-text-primary: #1A1D2E;--color-text-secondary: #6B7280;--color-text-muted: #9CA3AF;--color-border: #E5E7EB;--color-ru-bg: #F0F4FF;--color-ru-border: #7986CB;--color-ru-text: #5C6BC0;--color-premium: #0F9D58;--color-premium-light: #14B86E;--color-premium-dark: #0B7A44;--color-premium-text: #FFFFFF;--color-premium-glow: rgba(15, 157, 88, .45);--shadow-card: 0 1px 4px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.04);--shadow-card-lg: 0 4px 12px rgba(0,0,0,.06), 0 12px 32px rgba(0,0,0,.06);--shadow-modal: 0 24px 64px rgba(15, 18, 38, .18)}[data-theme=dark]{--color-primary: #5B8FC4;--color-primary-light: #7BA8D6;--color-primary-subtle: #16243A;--color-primary-text: #FFFFFF;--color-secondary: #2EB8C2;--color-secondary-light: #0F2E30;--color-success: #2ECC71;--color-success-bg: #103224;--color-error: #FF5C49;--color-error-bg: #3A1A18;--color-warning: #F5B041;--color-warning-bg: #2D2410;--color-bg: #13151F;--color-bg-secondary: #1C1F2E;--color-bg-tertiary: #252836;--color-text-primary: #F1F2F6;--color-text-secondary: #9CA3AF;--color-text-muted: #6B7280;--color-border: #2E3348;--color-ru-bg: #1A1D35;--color-ru-border: #5C6BC0;--color-ru-text: #9FA8DA;--color-premium: #14B86E;--color-premium-light: #2DD68C;--color-premium-dark: #0F9D58;--color-premium-text: #0A1A12;--color-premium-glow: rgba(20, 184, 110, .55);--shadow-card: 0 1px 4px rgba(0,0,0,.32), 0 4px 16px rgba(0,0,0,.24);--shadow-card-lg: 0 4px 12px rgba(0,0,0,.4), 0 12px 32px rgba(0,0,0,.32);--shadow-modal: 0 24px 64px rgba(0,0,0,.6)}:root{--text-xs: 12px;--leading-xs: 16px;--text-sm: 14px;--leading-sm: 20px;--text-base: 16px;--leading-base: 24px;--text-lg: 18px;--leading-lg: 28px;--text-xl: 20px;--leading-xl: 30px;--text-2xl: 24px;--leading-2xl: 32px;--text-3xl: 30px;--leading-3xl: 38px;--text-4xl: 36px;--leading-4xl: 44px;--space-1: 4px;--space-2: 8px;--space-3: 12px;--space-4: 16px;--space-5: 20px;--space-6: 24px;--space-8: 32px;--space-10: 40px;--space-12: 48px;--space-16: 64px;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 16px;--radius-xl: 20px;--radius-2xl: 24px;--radius-full: 999px;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-display: "Plus Jakarta Sans", "Inter", -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace}*{box-sizing:border-box;margin:0;padding:0}html,body,#root{height:100%;background:var(--color-bg);color:var(--color-text-primary);font-family:var(--font-sans);-webkit-font-smoothing:antialiased;text-rendering:optimizeLegibility}button{font-family:inherit;cursor:pointer;border:none;background:none}input,textarea,select{font-family:inherit}a{color:inherit;text-decoration:none}.app-shell{display:flex;flex-direction:column;min-height:100%;max-width:480px;margin:0 auto;background:var(--color-bg);position:relative}.page-scroll{flex:1;overflow-y:auto;padding:12px 12px 100px;display:flex;flex-direction:column;gap:12px}.page-scroll::-webkit-scrollbar{display:none}.app-header{display:flex;align-items:center;justify-content:space-between;padding:12px;border-bottom:1px solid var(--color-border);background:var(--color-bg);flex-shrink:0;position:sticky;top:0;z-index:10}.app-header-title{font-family:var(--font-display);font-weight:700;font-size:var(--text-lg);letter-spacing:-.01em}.app-header-back{width:36px;height:36px;border-radius:var(--radius-full);background:var(--color-bg-secondary);display:grid;place-items:center;color:var(--color-text-primary);border:1px solid var(--color-border)}.brand-mark{display:inline-flex;align-items:center;gap:8px;font-family:var(--font-display);font-weight:700}.brand-logo{width:32px;height:32px;border-radius:10px;background:linear-gradient(135deg,#3F7CB5 0%,#2C5F8D 100%);display:grid;place-items:center;font-size:18px;box-shadow:0 2px 8px #2c5f8d52}.tabbar{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;display:flex;background:var(--color-bg);border-top:1px solid var(--color-border);padding:8px 0 env(safe-area-inset-bottom,16px);z-index:100}.tabbar-item{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 0;color:var(--color-text-muted);font-size:11px;font-weight:500;transition:color .15s}.tabbar-item.active{color:var(--color-primary)}.tabbar-item .tab-icon{width:22px;height:22px;display:grid;place-items:center;transition:transform .2s}.tabbar-item.active .tab-icon{transform:scale(1.1)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:600;font-size:var(--text-base);border-radius:var(--radius-md);border:1px solid transparent;padding:0 20px;height:44px;transition:all .15s ease;white-space:nowrap}.btn-sm{height:32px;font-size:var(--text-sm);padding:0 14px;border-radius:var(--radius-sm)}.btn-lg{height:52px;font-size:var(--text-lg);padding:0 24px}.btn-block{width:100%}.btn-primary{background:var(--color-primary);color:var(--color-primary-text);border-color:var(--color-primary);box-shadow:0 1px 2px #2c5f8d52,inset 0 1px #ffffff2e}.btn-primary:hover{background:var(--color-primary-light);border-color:var(--color-primary-light)}.btn-secondary{background:var(--color-bg);color:var(--color-primary);border-color:var(--color-primary)}.btn-ghost{background:transparent;color:var(--color-primary);border-color:transparent}.btn-neutral{background:var(--color-bg-secondary);color:var(--color-text-primary);border-color:var(--color-border)}.btn-danger{background:var(--color-error);color:#fff;border-color:var(--color-error)}.btn-premium{background:linear-gradient(135deg,var(--color-premium-light) 0%,var(--color-premium) 50%,var(--color-premium-dark) 100%);color:var(--color-premium-text);border-color:transparent;box-shadow:0 1px #ffffff4d inset,0 -1px #0000001f inset,0 4px 12px var(--color-premium-glow),0 1px 2px #0000001f;font-weight:700;letter-spacing:.01em;position:relative;overflow:hidden}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-icon{width:44px;padding:0;border-radius:var(--radius-full)}.btn-icon.btn-sm{width:32px}.card{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:16px;box-shadow:var(--shadow-card)}.card-flat{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:16px}.stat-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}.stat-tile{background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:14px}.stat-tile-label{font-size:var(--text-xs);color:var(--color-text-secondary);font-weight:500;letter-spacing:.02em;text-transform:uppercase}.stat-tile-value{font-family:var(--font-display);font-size:28px;line-height:1.05;font-weight:700;margin-top:6px;letter-spacing:-.02em}.stat-tile-value.is-success{color:var(--color-success)}.stat-tile-value.is-error{color:var(--color-error)}.stat-tile-value.is-primary{color:var(--color-primary)}.badge{display:inline-flex;align-items:center;gap:6px;font-size:var(--text-xs);font-weight:600;padding:4px 10px;border-radius:var(--radius-full);letter-spacing:.01em}.badge-success{background:var(--color-success-bg);color:var(--color-success)}.badge-warning{background:var(--color-warning-bg);color:var(--color-warning)}.badge-error{background:var(--color-error-bg);color:var(--color-error)}.badge-primary{background:var(--color-primary-subtle);color:var(--color-primary)}.badge-neutral{background:var(--color-bg-tertiary);color:var(--color-text-secondary)}.badge-dot{width:6px;height:6px;border-radius:999px;background:currentColor}@keyframes pulse-dot{0%,to{opacity:1}50%{opacity:.35}}.badge-pulse .badge-dot{animation:pulse-dot 1.6s ease-in-out infinite}.progress{height:4px;background:var(--color-bg-tertiary);border-radius:999px;overflow:hidden}.progress-bar{height:100%;background:var(--color-primary);border-radius:999px;transition:width .4s ease}.progress-bar.is-success{background:var(--color-success)}.progress-bar.is-error{background:var(--color-error)}.option{display:flex;align-items:center;gap:12px;background:var(--color-bg-secondary);border:1.5px solid var(--color-border);border-radius:var(--radius-md);padding:14px;text-align:left;width:100%;color:var(--color-text-primary);transition:all .15s ease;cursor:pointer}.option:hover:not(:disabled){transform:translate(3px);border-color:var(--color-primary);background:var(--color-primary-subtle)}.option:disabled{cursor:default}.option-marker{width:26px;height:26px;border-radius:var(--radius-full);background:var(--color-bg);border:1.5px solid var(--color-border);display:grid;place-items:center;font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);flex-shrink:0}.option-text{flex:1;font-size:var(--text-base);line-height:1.4}.option-translation{font-size:var(--text-sm);color:var(--color-ru-text);font-style:italic;margin-top:6px;line-height:1.4}.option-icon{width:24px;height:24px;border-radius:999px;display:grid;place-items:center;flex-shrink:0}.option.is-correct{background:var(--color-success-bg);border-color:var(--color-success);transform:none}.option.is-correct .option-marker{background:var(--color-success);color:#fff;border-color:var(--color-success)}.option.is-wrong{background:var(--color-error-bg);border-color:var(--color-error);transform:none}.option.is-wrong .option-marker{background:var(--color-error);color:#fff;border-color:var(--color-error)}.option.is-disabled{opacity:.55;transform:none;cursor:default}@keyframes shake{0%,to{transform:translate(0)}20%{transform:translate(-6px)}40%{transform:translate(6px)}60%{transform:translate(-4px)}80%{transform:translate(4px)}}.option.shake{animation:shake .35s ease}.ru-block{background:var(--color-ru-bg);border-left:3px solid var(--color-ru-border);border-radius:8px;padding:10px 12px;font-style:italic;color:var(--color-ru-text);font-size:var(--text-sm);line-height:1.5}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:rgba(0,0,0,.5);display:flex;align-items:flex-end;justify-content:center;z-index:200;padding:0}.modal-sheet{background:var(--color-bg);border-radius:var(--radius-2xl) var(--radius-2xl) 0 0;padding:24px 24px calc(env(safe-area-inset-bottom,16px) + 24px);width:100%;max-width:480px;max-height:92vh;overflow-y:auto;display:flex;flex-direction:column;gap:16px}@keyframes slide-up{0%{transform:translateY(100%)}to{transform:translateY(0)}}.modal-sheet{animation:slide-up .25s ease-out}.modal-handle{width:40px;height:4px;background:var(--color-border);border-radius:999px;margin:0 auto 8px}.section{display:flex;flex-direction:column;gap:12px}.section-header{display:flex;align-items:center;justify-content:space-between}.section-title{font-family:var(--font-display);font-size:var(--text-xl);font-weight:700;letter-spacing:-.01em}.menu-card{display:flex;align-items:center;gap:14px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg);padding:14px 16px;box-shadow:var(--shadow-card);color:var(--color-text-primary);width:100%;text-align:left;transition:all .15s ease}.menu-card:hover{box-shadow:var(--shadow-card-lg);transform:translateY(-1px)}.menu-card-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;flex-shrink:0}.auth-page{min-height:100vh;display:flex;flex-direction:column;justify-content:space-between;padding:60px 28px 40px;position:relative;overflow:hidden}.dawn-rays{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;background:radial-gradient(120% 80% at 20% 0%,rgba(63,124,181,.12) 0%,transparent 55%),radial-gradient(120% 80% at 100% 0%,rgba(26,138,146,.08) 0%,transparent 55%);z-index:0}.quiz-header{display:flex;flex-direction:column;align-items:stretch;gap:10px;padding:12px;border-bottom:1px solid var(--color-border);background:var(--color-bg);flex-shrink:0;position:sticky;top:0;z-index:10}.quiz-header-row{display:flex;align-items:center;justify-content:space-between}.quiz-bottom{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:480px;padding:12px 12px calc(env(safe-area-inset-bottom,16px) + 12px);background:var(--color-bg);border-top:1px solid var(--color-border);display:flex;gap:10px;align-items:center;z-index:100}.result-ring{position:relative;width:160px;height:160px;margin:0 auto}.lb-row{padding:10px 14px;display:flex;align-items:center;gap:12px;background:var(--color-bg-secondary);border:1px solid var(--color-border);border-radius:var(--radius-lg)}.lb-row.is-me{background:var(--color-primary-subtle);border-color:var(--color-primary)}.lb-rank{width:28px;height:28px;border-radius:999px;background:var(--color-bg-tertiary);color:var(--color-text-secondary);display:grid;place-items:center;font-size:13px;font-weight:700;flex-shrink:0}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-down{0%{opacity:0;transform:translateY(-8px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}.animate-in{animation:fade-in .2s ease}.segmented{display:inline-flex;padding:3px;background:var(--color-bg-tertiary);border-radius:10px;gap:2px}.segmented-btn{padding:6px 14px;border-radius:8px;font-size:13px;font-weight:600;background:transparent;color:var(--color-text-secondary);transition:all .15s}.segmented-btn.active{background:var(--color-bg);color:var(--color-text-primary);box-shadow:0 1px 3px #00000014}.toggle{width:44px;height:26px;border-radius:999px;background:var(--color-bg-tertiary);position:relative;transition:background .2s;cursor:pointer}.toggle.on{background:var(--color-primary)}.toggle-thumb{position:absolute;top:3px;left:3px;width:20px;height:20px;border-radius:999px;background:white;transition:left .2s;box-shadow:0 1px 3px #0003}.toggle.on .toggle-thumb{left:21px}.question-img{display:block;width:100%;height:200px;object-fit:contain;object-position:center;border-radius:var(--radius-md);background:var(--color-bg-secondary)}.empty-state{display:flex;flex-direction:column;align-items:center;gap:12px;padding:48px 24px;text-align:center;color:var(--color-text-muted)}.empty-state-icon{font-size:48px}.empty-state-title{font-family:var(--font-display);font-weight:700;font-size:var(--text-lg);color:var(--color-text-primary)}.marathon-card{background:linear-gradient(135deg,#2C5F8D 0%,#1A3A5C 100%);color:#fff;border-radius:var(--radius-lg);padding:20px;border:none}@keyframes confetti-pop{0%{transform:scale(.8);opacity:0}60%{transform:scale(1.05)}to{transform:scale(1);opacity:1}}.ready-banner{animation:confetti-pop .4s ease-out}.timer-normal{color:var(--color-text-primary)}.timer-warn{color:var(--color-warning)}.timer-crit{color:var(--color-error);animation:pulse 1s infinite}