:root{--bg-base: #F5F7FA;--bg-card: #FFFFFF;--bg-elevated: #FFFFFF;--text-primary: #0A0C0F;--text-secondary: #2E3238;--text-tertiary: #5B606A;--text-inverse: #FFFFFF;--color-text: #0A0C0F;--color-text-primary: #0A0C0F;--color-text-secondary: #2E3238;--color-text-tertiary: #5B606A;--color-text-light: #FFFFFF;--color-text-muted: #5B606A;--accent-primary: #0064FF;--accent-secondary: #6E3AFF;--accent-success: #00C35A;--accent-warning: #FFB300;--accent-danger: #E63946;--color-primary: #0064FF;--color-secondary: #6E3AFF;--color-accent-primary: #0064FF;--color-accent-secondary: #6E3AFF;--color-success: #00C35A;--color-warning: #FFB300;--color-error: #E63946;--color-info: #0064FF;--icon-primary: #0E1115;--icon-secondary: #434A55;--icon-on-accent: #FFFFFF;--icon-danger: #E63946;--icon-success: #00C35A;--border-subtle: rgba(15, 23, 42, .06);--border-strong: rgba(15, 23, 42, .12);--border-accent: rgba(0, 100, 255, .2);--shadow-soft: 0 4px 18px rgba(0, 0, 0, .08), inset 0 0 0 1px rgba(255, 255, 255, .45);--shadow-strong: 0 8px 28px rgba(0, 0, 0, .12), inset 0 0 0 1px rgba(255, 255, 255, .6);--shadow-elevated: 0 12px 38px rgba(0, 0, 0, .15), inset 0 0 0 1px rgba(255, 255, 255, .7);--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .08);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .12);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .15);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .2);--gradient-accent: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));--gradient-bg: var(--bg-base);--btn-primary: linear-gradient(135deg, #0064FF, #6E3AFF);--btn-secondary: #FFFFFF;--glass-bg: rgba(255, 255, 255, .7);--glass-border: rgba(15, 23, 42, .08);--glass-blur: blur(22px);--color-glass-bg: rgba(255, 255, 255, .7);--color-glass-border: rgba(15, 23, 42, .08);--color-glass-hover: rgba(255, 255, 255, .9);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--radius-xl: 24px;--radius-2xl: 32px;--radius-full: 9999px;--space-1: .25rem;--space-2: .5rem;--space-3: .75rem;--space-4: 1rem;--space-5: 1.25rem;--space-6: 1.5rem;--space-8: 2rem;--space-10: 2.5rem;--space-12: 3rem;--space-16: 4rem;--font-primary: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", sans-serif;--font-display: "SF Pro Display", -apple-system, BlinkMacSystemFont, sans-serif;--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;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--leading-tight: 1.25;--leading-normal: 1.5;--leading-relaxed: 1.75;--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--transition-slowest: .5s cubic-bezier(.4, 0, .2, 1);--z-base: 0;--z-dropdown: 100;--z-sticky: 200;--z-fixed: 300;--z-modal-backdrop: 400;--z-modal: 500;--z-popover: 600;--z-tooltip: 700;--avatar-size-sm: 80px;--avatar-size-md: 120px;--avatar-size-lg: 200px;--avatar-size-xl: 280px;--avatar-ring-width: 4px;--avatar-glow-size: 60px}.glass,.card,.panel{background:#ffffff14;border-radius:var(--radius-lg);padding:var(--space-5) var(--space-6);border:1px solid rgba(255,255,255,.25);box-shadow:0 8px 32px #1f268726,inset 0 1px 1px #ffffff4d;backdrop-filter:blur(30px) saturate(180%);-webkit-backdrop-filter:blur(30px) saturate(180%);position:relative;overflow:hidden}.glass:before,.card:before,.panel:before{content:"";position:absolute;top:0;left:0;right:0;height:40%;background:linear-gradient(180deg,rgba(255,255,255,.12) 0%,transparent 100%);border-radius:var(--radius-lg) var(--radius-lg) 0 0;pointer-events:none;z-index:0}.glass>*,.card>*,.panel>*{position:relative;z-index:1}.glass-hover:hover,.card:hover{border-color:#0064ff4d;box-shadow:0 12px 48px #0064ff1f,inset 0 1px #ffffffe6,inset 0 -1px #0064ff0d;transform:translateY(-2px)}.card-elevated{background:linear-gradient(135deg,#fffffff2,#ffffffd9);border-radius:var(--radius-lg);box-shadow:0 20px 60px #0000001f,inset 0 1px #fff,inset 0 -1px #00000008;-webkit-backdrop-filter:blur(24px) saturate(200%);backdrop-filter:blur(24px) saturate(200%)}.gradient-text{background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.btn-primary{background:var(--btn-primary);color:var(--text-inverse);border-radius:var(--radius-full);padding:10px 18px;border:none;font-weight:var(--font-semibold);cursor:pointer;transition:all var(--transition-base);box-shadow:0 6px 14px #0064ff59}.btn-primary svg{color:var(--icon-on-accent)}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 10px 22px #0064ff73}.btn-primary:active{transform:translateY(0)}.btn-secondary{background:#fff;color:var(--text-primary);border-radius:var(--radius-full);padding:9px 16px;border:1px solid var(--border-strong);font-weight:var(--font-semibold);cursor:pointer;transition:all var(--transition-base)}.btn-secondary svg{color:var(--icon-primary)}.btn-secondary:hover{border-color:var(--border-accent);box-shadow:0 4px 12px #0064ff26;transform:translateY(-1px)}.btn-tertiary{background:transparent;color:var(--text-primary);border-radius:var(--radius-md);padding:var(--space-2) var(--space-4);border:1px solid var(--border-subtle);font-weight:var(--font-medium);cursor:pointer;transition:all var(--transition-fast)}.btn-tertiary:hover{background:var(--bg-card);border-color:var(--border-strong)}.icon{color:var(--icon-primary)}.icon-secondary{color:var(--icon-secondary)}.icon-on-accent{color:var(--icon-on-accent)}*{margin:0;padding:0;box-sizing:border-box}html{font-size:16px}body{margin:0;min-width:320px;min-height:100vh;font-family:var(--font-primary);font-size:var(--text-base);line-height:var(--leading-normal);color:var(--text-primary);background:var(--gradient-bg);background-attachment:fixed;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;overflow-x:hidden}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:var(--font-bold);line-height:var(--leading-tight);color:var(--text-primary);letter-spacing:-.02em}h1{font-size:var(--text-4xl)}h2{font-size:var(--text-3xl)}h3{font-size:var(--text-2xl)}h4{font-size:var(--text-xl)}h5{font-size:var(--text-lg)}h6{font-size:var(--text-base)}p{margin-bottom:var(--space-4);color:var(--text-secondary);line-height:var(--leading-relaxed)}a{color:var(--color-accent-primary);text-decoration:none;transition:color var(--transition-fast)}a:hover{color:var(--color-accent-secondary)}button{font-family:inherit;cursor:pointer;border:none;outline:none;transition:all var(--transition-base)}button:focus-visible{outline:2px solid var(--color-accent-primary);outline-offset:2px}button:disabled{opacity:.5;cursor:not-allowed}::selection{background:var(--color-accent-primary);color:#fff}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:#0064ff33;border-radius:var(--radius-md)}::-webkit-scrollbar-thumb:hover{background:#0064ff59}#root{min-height:100vh;width:100%}.container{max-width:1440px;margin:0 auto;padding:0 var(--space-6)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.toast-container{position:fixed;top:1rem;right:1rem;z-index:9999;display:flex;flex-direction:column;gap:.5rem;pointer-events:none}.toast{display:flex;align-items:center;gap:.75rem;padding:.75rem 1rem;background:#fff;border-radius:8px;box-shadow:0 4px 12px #00000026;min-width:280px;max-width:400px;pointer-events:auto;animation:slideIn .3s ease-out}@keyframes slideIn{0%{transform:translate(120%);opacity:0}to{transform:translate(0);opacity:1}}.toast-icon{flex-shrink:0;display:flex;align-items:center;justify-content:center;width:24px;height:24px}.toast-message{flex:1;font-size:.875rem;line-height:1.4;color:#1a1a1a}.toast-close{flex-shrink:0;background:none;border:none;padding:.25rem;cursor:pointer;display:flex;align-items:center;justify-content:center;color:#666;transition:color .2s}.toast-close:hover{color:#1a1a1a}.toast-info{border-left:4px solid #2196F3}.toast-info .toast-icon{color:#2196f3}.toast-success{border-left:4px solid #4CAF50}.toast-success .toast-icon{color:#4caf50}.toast-error{border-left:4px solid #f44336}.toast-error .toast-icon{color:#f44336}.toast-warning{border-left:4px solid #ff9800}.toast-warning .toast-icon{color:#ff9800}@media(max-width:768px){.toast-container{left:1rem;right:1rem}.toast{min-width:auto;max-width:none}}.app-layout{display:flex;min-height:100vh;background-color:var(--bg-primary)}.layout-main-content{flex:1;padding:var(--space-4);padding-bottom:80px;overflow-y:auto;margin-left:0}.app-sidebar{display:none;width:260px;height:100vh;position:sticky;top:0;background:#fffc;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-right:1px solid var(--border-subtle);flex-direction:column;padding:var(--space-6);z-index:50}.sidebar-brand{display:flex;align-items:center;gap:var(--space-2);margin-bottom:var(--space-8);padding-left:var(--space-2)}.brand-logo{width:32px;height:32px;background:var(--gradient-primary);border-radius:var(--radius-md);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.brand-name{font-size:var(--text-xl);font-weight:var(--font-bold);color:var(--text-primary)}.sidebar-nav{display:flex;flex-direction:column;gap:var(--space-2);flex:1}.nav-item{display:flex;align-items:center;gap:var(--space-3);padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);color:var(--text-secondary);text-decoration:none;font-weight:var(--font-medium);transition:all var(--transition-fast)}.nav-item:hover{background:#00000008;color:var(--text-primary)}.nav-item.active{background:#0064ff1a;color:var(--color-accent-primary)}.sidebar-footer{padding-top:var(--space-4);border-top:1px solid var(--border-subtle)}.user-mini-profile{display:flex;align-items:center;gap:var(--space-3)}.mini-avatar{width:40px;height:40px;border-radius:50%;background:var(--gradient-accent);color:#fff;display:flex;align-items:center;justify-content:center;font-weight:700}.mini-info{display:flex;flex-direction:column}.mini-name{font-weight:var(--font-semibold);font-size:var(--text-sm);color:var(--text-primary)}.mini-level{font-size:var(--text-xs);color:var(--text-tertiary)}.mini-copyright{font-size:10px;color:var(--text-tertiary);margin-top:2px}.bottom-navigation{position:fixed;bottom:0;left:0;right:0;height:64px;background:#ffffffe6;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-top:1px solid var(--border-subtle);display:flex;justify-content:space-around;align-items:center;z-index:100;padding-bottom:env(safe-area-inset-bottom)}.bottom-nav-item{display:flex;flex-direction:column;align-items:center;gap:2px;text-decoration:none;color:var(--text-tertiary);font-size:10px;font-weight:var(--font-medium);padding:8px 4px;flex:1;min-width:0}.bottom-nav-item.active{color:var(--color-accent-primary)}.nav-icon-wrapper{transition:transform var(--transition-fast)}.bottom-nav-item.active .nav-icon-wrapper{transform:translateY(-2px)}@media(min-width:1024px){.app-sidebar{display:flex}.bottom-navigation{display:none}.layout-main-content{margin-left:0;padding:var(--space-6);padding-bottom:var(--space-6)}}.app{min-height:100vh;height:auto;display:flex;flex-direction:column;position:relative;overflow:hidden;background-color:var(--bg-base)}.app:before{content:"";position:fixed;top:-50%;left:-50%;width:200%;height:200%;background:radial-gradient(circle at 20% 30%,rgba(0,100,255,.75),rgba(0,100,255,.3) 25%,transparent 40%),radial-gradient(circle at 80% 70%,rgba(110,58,255,.65),rgba(110,58,255,.25) 25%,transparent 40%),radial-gradient(circle at 50% 50%,rgba(0,195,90,.5),rgba(0,195,90,.2) 25%,transparent 45%);animation:ambientRotate 20s linear infinite;pointer-events:none;z-index:0}.app:after{content:"";position:fixed;inset:0;background:radial-gradient(ellipse 80% 60% at 10% 20%,rgba(221,232,255,.95),rgba(200,220,255,.6) 30%,transparent 50%),radial-gradient(ellipse 80% 60% at 90% 80%,rgba(255,242,217,.9),rgba(255,230,200,.5) 30%,transparent 50%),radial-gradient(ellipse 70% 70% at 50% 50%,rgba(233,255,244,.8),rgba(210,255,235,.4) 30%,transparent 55%);animation:ambientPulse 8s ease-in-out infinite;pointer-events:none;z-index:0}@keyframes ambientRotate{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes ambientPulse{0%,to{opacity:1}50%{opacity:.8}}.app-header{position:sticky;top:0;z-index:50;-webkit-backdrop-filter:var(--glass-blur) saturate(180%);backdrop-filter:var(--glass-blur) saturate(180%);background:var(--glass-bg);border-bottom:1px solid var(--border-subtle);box-shadow:0 4px 18px #0000000f;position:relative}.header-inner{max-width:1440px;margin:0 auto;padding:10px var(--space-6);display:flex;align-items:center;justify-content:space-between;gap:16px}.header-brand{font-size:14px;font-weight:var(--font-bold);background:var(--gradient-accent);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;letter-spacing:.02em;filter:drop-shadow(0 0 8px rgba(162,89,255,.3))}.btn-back-home{padding:8px 16px;background:#fff;border:1px solid var(--border-strong);border-radius:var(--radius-full);color:var(--text-primary);font-size:var(--text-sm);font-weight:var(--font-semibold);cursor:pointer;transition:all var(--transition-fast);display:inline-flex;align-items:center;gap:6px;box-shadow:0 2px 8px #0000000f}.btn-back-home:hover{border-color:var(--border-accent);background:#fff;color:var(--accent-primary);transform:translate(-2px);box-shadow:0 4px 12px #0064ff26}.btn-back-home:active{transform:translate(0)}.btn-back-home svg{color:var(--icon-primary)}.header-tabs{display:flex;gap:12px;overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none}.header-tabs::-webkit-scrollbar{display:none}@media(max-width:768px){.header-inner{padding:10px 16px;gap:8px}.header-tabs{gap:8px;padding-right:16px;-webkit-mask-image:linear-gradient(to right,black 85%,transparent 100%);mask-image:linear-gradient(to right,black 85%,transparent 100%)}.tab-button span{font-size:13px;white-space:nowrap}}.tab-button{padding:8px 16px;background:transparent;border:none;border-radius:var(--radius-full);color:var(--text-secondary);font-size:var(--text-sm);font-weight:var(--font-medium);cursor:pointer;transition:all var(--transition-fast);display:inline-flex;align-items:center;gap:8px}.tab-button svg{color:var(--icon-secondary)}.tab-button:hover{color:var(--text-primary);background:#00000008}.tab-button.active{background:#fff;color:var(--text-primary);font-weight:var(--font-semibold);box-shadow:0 4px 12px #00000014}.tab-button.active svg{color:var(--icon-primary)}.app-main{flex:1;padding:24px 0 40px;width:100%;position:relative;z-index:1}.main-grid{max-width:1440px;margin:0 auto;padding:0 var(--space-6);display:grid;grid-template-columns:240px 1fr 240px;gap:var(--space-6);align-items:start}.main-grid.focus-mode{max-width:1200px;padding:0 32px;grid-template-columns:200px 1fr;gap:32px}@media(max-width:1280px){.main-grid{grid-template-columns:200px 1fr 200px;gap:var(--space-5)}}@media(max-width:1024px){.main-grid{grid-template-columns:1fr!important;gap:var(--space-4);padding:0 var(--space-4);display:flex;flex-direction:column}.coach-column{order:1;position:relative!important;top:0!important;width:100%!important;margin-bottom:var(--space-4);z-index:10}.lesson-column{order:2;width:100%!important;margin-bottom:var(--space-6)}.timeline-column{order:3;position:relative!important;top:0!important;width:100%!important;max-height:none;overflow:visible}}@media(max-width:768px){.app-main{padding:16px 0 60px}.main-grid{padding:0 16px;gap:20px}.grid-column{width:100%!important}}.grid-column{animation:fadeInUp .6s ease-out backwards}.coach-column{position:sticky;top:60px;height:auto;align-self:start;animation-delay:0s;overflow:visible}.coach-column.compact{width:100%}.lesson-column{animation-delay:.1s}.main-grid.focus-mode .lesson-column{max-width:880px;margin:0 auto}.timeline-column{position:sticky;top:60px;max-height:calc(100vh - 80px);overflow-y:auto;animation-delay:.2s}@keyframes fadeInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.dev-controls{position:fixed;bottom:var(--space-6);right:var(--space-6);width:300px;padding:var(--space-5);background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-elevated);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);z-index:var(--z-modal);animation:slideInUp .3s ease-out}@keyframes slideInUp{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}.dev-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--space-4);padding-bottom:var(--space-3);border-bottom:1px solid var(--border-subtle)}.dev-badge{font-size:var(--text-xs);font-weight:var(--font-bold);color:var(--color-quaternary);background:#ffc14533;padding:var(--space-1) var(--space-3);border-radius:var(--radius-sm);letter-spacing:.1em}.dev-close{width:24px;height:24px;display:flex;align-items:center;justify-content:center;background:#0000000d;border:none;border-radius:var(--radius-sm);color:var(--color-text-muted);cursor:pointer;transition:all var(--transition-fast)}.dev-close:hover{background:#0000001a;color:var(--color-text)}.dev-state{font-size:var(--text-sm);color:var(--text-primary);margin-bottom:var(--space-4);padding:var(--space-3);background:#0064ff0f;border-radius:var(--radius-md);border:1px solid rgba(0,100,255,.12)}.dev-state strong{color:var(--accent-primary);text-transform:capitalize;font-weight:var(--font-bold)}.dev-buttons{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--space-2);margin-bottom:var(--space-3)}.dev-btn{padding:var(--space-2) var(--space-3);background:#fff;border:1px solid var(--border-strong);border-radius:var(--radius-sm);color:var(--text-primary);font-size:var(--text-xs);font-weight:var(--font-semibold);cursor:pointer;transition:all var(--transition-fast)}.dev-btn:hover{background:#fff;border-color:var(--border-accent);color:var(--accent-primary);transform:translateY(-1px);box-shadow:0 2px 8px #0064ff1f}.dev-hint{font-size:var(--text-xs);color:var(--text-tertiary);text-align:center;margin:0;padding-top:var(--space-3);border-top:1px solid var(--border-subtle)}.app-footer{position:relative;z-index:100;border-top:1px solid var(--border-subtle);padding:16px 24px;font-size:var(--text-sm);color:var(--text-tertiary);background:var(--glass-bg);-webkit-backdrop-filter:var(--glass-blur);backdrop-filter:var(--glass-blur);box-shadow:0 -4px 12px #0000000a}.footer-inner{max-width:1440px;margin:0 auto;padding:0 var(--space-6);display:flex;flex-wrap:wrap;gap:12px;justify-content:space-between;align-items:center}.coach-panel::-webkit-scrollbar,.lesson-panel::-webkit-scrollbar,.timeline-panel::-webkit-scrollbar{width:6px}.coach-panel::-webkit-scrollbar-track,.lesson-panel::-webkit-scrollbar-track,.timeline-panel::-webkit-scrollbar-track{background:transparent}.coach-panel::-webkit-scrollbar-thumb,.lesson-panel::-webkit-scrollbar-thumb,.timeline-panel::-webkit-scrollbar-thumb{background:#0064ff33;border-radius:var(--radius-full)}.coach-panel::-webkit-scrollbar-thumb:hover,.lesson-panel::-webkit-scrollbar-thumb:hover,.timeline-panel::-webkit-scrollbar-thumb:hover{background:#0064ff59}.weak-words-reminder{max-width:1440px;margin:0 auto;padding:0 var(--space-6);margin-bottom:var(--space-4);display:flex;align-items:center;justify-content:space-between;gap:var(--space-4);padding:var(--space-4) var(--space-6);background:linear-gradient(135deg,#ffa5001a,#fbbf241a);border:1px solid 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