.navigation{position:fixed;top:0;left:0;right:0;background-color:var(--white);border-bottom:1px solid var(--border);z-index:1000;box-shadow:var(--shadow-sm)}.nav-content{display:flex;align-items:center;justify-content:space-between;height:3.5rem;padding:0 1rem}.nav-logo{display:flex;align-items:center;gap:.5rem;text-decoration:none;font-family:var(--font-heading);font-weight:600;font-size:1.25rem;color:var(--primary);transition:transform .2s ease}.nav-logo:hover{transform:translateY(-1px)}.otter-icon{font-size:1.5rem;animation:bounce 2s ease-in-out infinite}.logo-text{background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}.nav-links{display:flex;align-items:center;gap:.25rem}.nav-link{padding:.5rem 1rem;border-radius:var(--radius-xl);text-decoration:none;color:var(--muted);font-size:.875rem;font-weight:500;transition:all .2s 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auto}.hero-title{font-size:4.5rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent;text-align:center;margin-bottom:4rem;letter-spacing:-.02em;line-height:1.1;animation:fadeIn .8s ease}.hero-section{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2rem;animation:fadeIn .8s ease .3s both}.otter-practice{display:flex;flex-direction:column;align-items:center;gap:2rem;cursor:pointer;transition:transform .3s ease}.otter-practice:hover{transform:scale(1.05)}.otter-practice:hover .otter-large{animation-play-state:paused;transform:translateY(-10px)}.btn{padding:1rem 2rem;border-radius:100px;font-weight:600;border:none;cursor:pointer;transition:all .3s 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20px rgba(0,0,0,.1));-webkit-user-select:none;user-select:none}.speech-bubble{margin-top:2rem;background:linear-gradient(135deg,var(--white),#F8FAFF);padding:1.25rem 1.75rem;border-radius:2rem;box-shadow:0 8px 24px #0000001a;font-size:1rem;font-weight:500;color:var(--primary);max-width:250px;animation:bubbleIn .8s cubic-bezier(.68,-.55,.265,1.55) .6s both;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:relative}.speech-bubble:before{content:"";position:absolute;top:-10px;left:50%;transform:translate(-50%) rotate(45deg);width:20px;height:20px;background:linear-gradient(135deg,var(--white),#F8FAFF);box-shadow:-2px -2px 5px #0000000d}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes fadeInLeft{0%{opacity:0;transform:translate(-30px)}to{opacity:1;transform:translate(0)}}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}@keyframes bubbleIn{0%{opacity:0;transform:scale(.8)}to{opacity:1;transform:scale(1)}}@media (max-width: 768px){.container{padding:0 1rem}.hero-title{font-size:2.5rem;margin-bottom:2rem}.otter-large{font-size:6rem}.speech-bubble{margin-top:1rem;font-size:.875rem;padding:1rem 1.25rem}.btn-large{padding:1rem 1.75rem;font-size:1rem}}.keyboard-guide{background:var(--white);border-radius:var(--radius-lg);padding:1.5rem;box-shadow:var(--shadow-sm);position:relative}.keyboard-guide.full-size{padding:2rem;box-shadow:var(--shadow-md)}.keyboard-container{display:flex;flex-direction:column;gap:.5rem;align-items:center}.keyboard-row{display:flex;gap:.5rem}.keyboard-key{width:3rem;height:3rem;display:flex;flex-direction:column;align-items:center;justify-content:center;border-radius:var(--radius-md);background-color:var(--light-gray);border:2px solid var(--border);transition:all .2s ease;position:relative;cursor:default}.full-size .keyboard-key{width:4rem;height:4rem}.keyboard-key.active{transform:scale(1.1);z-index:10;animation:keyPulse .5s ease;border-width:3px;border-color:#0000004d}.keyboard-key.active .key-label{color:#000;font-weight:800;font-size:1.1rem;text-shadow:0 0 10px currentColor}.keyboard-key.home-key:after{content:"";position:absolute;bottom:.25rem;width:1rem;height:2px;background-color:var(--primary);opacity:.5}.key-label{font-weight:600;font-size:1rem;color:#1f2937}.finger-label{font-size:.625rem;color:var(--muted);margin-top:.125rem}.spacebar{width:15rem;height:2.5rem}.full-size .spacebar{width:20rem;height:3rem}.spacebar-row{margin-top:.5rem}.home-row-hint{text-align:center;margin-top:1rem;font-size:.75rem;color:var(--muted);font-style:italic}.finger-highlight{position:absolute;top:-2rem;right:1rem;display:flex;gap:1rem}.hand{width:3rem;height:3rem;background:var(--light-gray);border-radius:var(--radius-md);position:relative;display:flex;align-items:center;justify-content:center}.finger{width:.5rem;height:.5rem;background:var(--muted);border-radius:50%;opacity:.3}.finger.active{background:var(--primary);opacity:1;transform:scale(1.5);box-shadow:0 0 10px var(--primary)}@keyframes keyPulse{0%{transform:scale(1)}50%{transform:scale(1.2)}to{transform:scale(1.1)}}@media (max-width: 768px){.keyboard-key{width:2rem;height:2rem}.key-label{font-size:.75rem}.keyboard-key.active .key-label{font-size:.85rem}.spacebar{width:10rem;height:2rem}.keyboard-row{gap:.25rem}.finger-highlight{display:none}}.typing-interface{display:flex;flex-direction:column;align-items:center;gap:2rem;padding:2rem 0}.typing-card{background:var(--white);border-radius:var(--radius-lg);padding:2rem;box-shadow:var(--shadow-md);min-width:600px;max-width:800px;transition:all .3s ease}.target-text{font-family:var(--font-mono);font-size:2rem;letter-spacing:.1em;margin-bottom:2rem;text-align:center;min-height:3rem;display:flex;align-items:center;justify-content:center;gap:.1em}.target-text span{display:inline-block;transition:all .2s ease;position:relative;padding:.1em}.char-correct{color:var(--success)}.char-current{background-color:var(--primary);background-color:#7aa2f71a;border-radius:var(--radius-sm);animation:pulse 1.5s ease-in-out infinite}.char-error{color:var(--error);background-color:#f28fad1a}.char-pending{color:var(--muted)}.typing-input{width:100%;padding:1rem;font-size:1.25rem;font-family:var(--font-mono);border:2px solid var(--border);border-radius:var(--radius-md);outline:none;transition:border-color .2s ease;text-align:center}.typing-input:focus{border-color:var(--primary)}.typing-stats{display:flex;justify-content:space-around;margin-top:2rem;padding-top:1.5rem;border-top:1px solid var(--border)}.stat{text-align:center}.stat-label{display:block;font-size:.875rem;color:var(--muted);margin-bottom:.25rem}.stat-value{display:block;font-size:1.5rem;font-weight:600;color:var(--primary);font-family:var(--font-mono)}.finger-hint{text-align:center;margin-top:1rem;font-size:.875rem;color:var(--muted);font-style:italic}.otter-message{display:flex;align-items:center;gap:.5rem;background:var(--light-gray);padding:1rem 1.5rem;border-radius:var(--radius-xl);font-size:.875rem;color:var(--primary);animation:slideIn .3s ease}.otter-message .otter-icon{font-size:1.5rem;animation:bounce 2s ease-in-out infinite}@keyframes slideIn{0%{transform:translateY(10px);opacity:0}to{transform:translateY(0);opacity:1}}@media (max-width: 768px){.typing-card{min-width:auto;width:100%;padding:1.5rem;margin:0 1rem}.target-text{font-size:1.5rem}.typing-input{font-size:1rem;padding:.75rem}.stat-value{font-size:1.25rem}}.practice-page{padding:2rem 0;min-height:calc(100vh - 160px);display:flex;align-items:center}.practice-setup{max-width:600px;margin:0 auto}.setup-section{background:var(--white);padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);margin-bottom:2rem}.setup-section h3{margin-bottom:1.5rem;color:var(--primary)}.mode-options{display:grid;grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:1rem}.mode-option{display:flex;align-items:center;padding:.75rem 1rem;background:var(--light-gray);border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease}.mode-option:hover{background:var(--white);box-shadow:var(--shadow-sm)}.mode-option input[type=radio]{margin-right:.5rem}.mode-option input[type=radio]:checked+span{color:var(--primary);font-weight:500}.custom-text-input{width:100%;margin-top:1rem;padding:1rem;border:1px solid var(--border);border-radius:var(--radius-md);font-family:var(--font-body);font-size:1rem;resize:vertical}.custom-text-input:focus{outline:none;border-color:var(--primary)}.duration-options{display:flex;gap:1rem}.duration-btn{flex:1;padding:1rem;background:var(--light-gray);border:2px solid transparent;border-radius:var(--radius-md);font-size:1rem;font-weight:500;cursor:pointer;transition:all .2s ease}.duration-btn:hover{background:var(--white);border-color:var(--primary)}.duration-btn.active{background:var(--primary);color:var(--white)}.start-btn{width:100%;margin-top:2rem}.start-btn:disabled{opacity:.5;cursor:not-allowed}.practice-active{max-width:800px;margin:0 auto}.practice-timer{text-align:center;margin-bottom:2rem}.timer-value{display:block;font-size:3rem;font-weight:700;color:var(--primary);font-family:var(--font-mono);margin-bottom:1rem}.live-stats{display:flex;justify-content:center;gap:3rem;margin-bottom:2rem;padding:1.5rem;background:var(--white);border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.live-stat{text-align:center}.live-stat .stat-label{display:block;font-size:.875rem;color:var(--muted);margin-bottom:.25rem}.live-stat .stat-value{display:block;font-size:2rem;font-weight:600;color:var(--primary);font-family:var(--font-mono)}.practice-results{max-width:800px;margin:3rem auto 0;padding:3rem;background:var(--light-gray);border-radius:var(--radius-lg)}.practice-results h2{text-align:center;color:var(--primary);margin-bottom:2rem}.results-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem}.result-card{background:var(--white);padding:2rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm)}.result-card h3{color:var(--primary);margin-bottom:1.5rem;font-size:1.25rem}.result-stat{display:flex;justify-content:space-between;align-items:center;padding:.75rem 0;border-bottom:1px solid var(--border)}.result-stat:last-child{border-bottom:none}.result-stat span{color:var(--muted)}.result-stat strong{font-size:1.25rem;color:var(--primary);font-family:var(--font-mono)}.error-list{display:flex;flex-direction:column;gap:.75rem}.error-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;background:var(--light-gray);border-radius:var(--radius-md)}.error-letter{font-size:1.5rem;font-weight:600;font-family:var(--font-mono);color:var(--error);background:var(--white);width:2.5rem;height:2.5rem;display:flex;align-items:center;justify-content:center;border-radius:var(--radius-md)}.error-count{color:var(--muted);font-size:.875rem}@media (max-width: 768px){.mode-options{grid-template-columns:1fr}.duration-options{flex-direction:column}.zen-mode-btn{margin-top:.75rem}.live-stats{gap:1.5rem}.live-stat .stat-value{font-size:1.5rem}.timer-value{font-size:2.5rem}.results-grid{grid-template-columns:1fr}}.zen-mode{position:relative}.zen-mode:before{content:"";position:fixed;top:0;left:0;right:0;bottom:0;background:linear-gradient(180deg,#f8f5ec4d,#eaede266 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#0000000d}.stats-toggle{width:40px;height:40px;padding:0;font-size:1.5rem;line-height:1;display:flex;align-items:center;justify-content:center}.zen-mode .live-stats{background:#fff3;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(220,230,220,.2);box-shadow:0 1px 6px #00000005;transition:all .5s ease;border-radius:20px}.zen-mode .live-stat .stat-label{opacity:.5;color:#7a8a7a;font-size:.8rem}.zen-mode .live-stat .stat-value{color:#5d6d5d;font-weight:400;font-family:var(--font-body)}.zen-time{opacity:.5;transition:opacity .3s ease}.zen-time:hover{opacity:.8}.zen-mode .typing-interface{filter:saturate(.7)}.zen-mode .typing-card{background:#ffffff4d;-webkit-backdrop-filter:blur(15px);backdrop-filter:blur(15px);box-shadow:0 2px 10px #00000005;border:1px solid rgba(220,230,220,.25);transition:none}.zen-mode .target-text{color:#4a5a4a;font-weight:400;letter-spacing:.05em}.zen-mode .typing-input{background:#fff6;border:1px solid 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h1{text-align:center;color:var(--primary);margin-bottom:.5rem}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:2rem;max-width:800px;margin:3rem auto}.settings-card{background:var(--white);padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm)}.settings-card h3{color:var(--primary);margin-bottom:1.5rem;font-size:1.25rem}.setting-item{margin-bottom:1.5rem}.setting-item:last-child{margin-bottom:0}.setting-item label{display:flex;align-items:center;justify-content:space-between;cursor:pointer}.setting-item span{color:#374151;font-weight:500}.setting-item input[type=checkbox]{width:20px;height:20px;cursor:pointer}.setting-item select{padding:.5rem 1rem;border:1px solid var(--border);border-radius:var(--radius-md);background:var(--white);cursor:pointer;font-size:1rem;min-width:120px}.setting-item select:focus{outline:none;border-color:var(--primary)}.setting-item input[type=range]{width:100%;margin:.5rem 0;cursor:pointer}.volume-value{display:block;text-align:center;color:var(--muted);font-size:.875rem;margin-top:.5rem}.danger-zone{border:2px solid var(--error)}.danger-zone h3{color:var(--error)}.setting-description{color:var(--muted);margin-bottom:1rem;line-height:1.6}.btn-danger{background-color:var(--error);color:var(--white);padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);font-weight:500;cursor:pointer;transition:all .2s ease}.btn-danger:hover{opacity:.9;transform:translateY(-1px);box-shadow:var(--shadow-md)}.settings-info{max-width:600px;margin:3rem auto;padding:2rem;background:var(--light-gray);border-radius:var(--radius-lg);text-align:center}.settings-info h3{color:var(--primary);margin-bottom:1rem}.settings-info p{color:var(--muted);line-height:1.6}input[type=checkbox]{-moz-appearance:none;appearance:none;-webkit-appearance:none;width:24px;height:24px;border:2px solid 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li:before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:700}.journey-timeline{margin-top:2rem}.timeline-item{display:flex;gap:1.5rem;margin-bottom:2rem;padding-left:1rem;position:relative}.timeline-item:before{content:"";position:absolute;left:2.25rem;top:3rem;bottom:-2rem;width:2px;background:var(--border)}.timeline-item:last-child:before{display:none}.timeline-marker{font-size:2rem;background:var(--light-gray);width:3rem;height:3rem;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.timeline-item h3{color:var(--primary);margin-bottom:.5rem}.timeline-item p{margin:0}.features-list{display:flex;flex-direction:column;gap:1.5rem;margin-top:1.5rem}.feature{display:flex;gap:1rem;align-items:flex-start}.feature-emoji{font-size:2rem;flex-shrink:0}.feature h4{color:var(--primary);margin-bottom:.25rem}.feature p{margin:0;font-size:.875rem}.success-tips{counter-reset:tips;padding-left:0;margin-top:1rem}.success-tips li{counter-increment:tips;position:relative;padding-left:2.5rem;margin-bottom:1rem;color:#4b5563;line-height:1.6}.success-tips li:before{content:counter(tips);position:absolute;left:0;width:1.75rem;height:1.75rem;background:var(--primary);color:var(--white);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:.875rem}.about-footer{text-align:center;padding:3rem 2rem;background:linear-gradient(135deg,var(--primary),var(--accent));color:var(--white);border-radius:var(--radius-lg);margin-top:3rem}.about-footer p{font-size:1.125rem;line-height:1.8;margin-bottom:2rem;color:var(--white)}.otter-signature{display:flex;align-items:center;justify-content:center;gap:.5rem}.otter-signature span{font-size:2rem}.otter-signature p{margin:0;font-style:italic;font-size:1rem}@media (max-width: 768px){.about-section{padding:1.5rem}.timeline-item{flex-direction:column;gap:.5rem;padding-left:0}.timeline-item:before{display:none}.timeline-marker{width:2.5rem;height:2.5rem;font-size:1.5rem}.feature-emoji{font-size:1.5rem}.about-footer{padding:2rem 1.5rem}.about-footer p{font-size:1rem}}.keyboard-reference-page{padding:2rem 0}.keyboard-reference-page h1{text-align:center;color:var(--primary);margin-bottom:.5rem}.keyboard-section{background:var(--white);padding:3rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin:3rem 0}.keyboard-section h2{color:var(--primary);margin-bottom:1rem}.section-description{color:var(--muted);margin-bottom:2rem;text-align:center}.keyboard-display{display:flex;justify-content:center;margin-top:2rem}.finger-assignments{background:var(--light-gray);padding:3rem;border-radius:var(--radius-lg);margin-bottom:3rem}.finger-assignments h2{text-align:center;color:var(--primary);margin-bottom:3rem}.hands-grid{display:grid;grid-template-columns:1fr 1fr;gap:4rem;max-width:800px;margin:0 auto}.hand-section h3{text-align:center;color:var(--primary);margin-bottom:2rem}.finger-group{display:flex;flex-direction:column;gap:1rem}.finger-item{background:var(--white);padding:1.5rem;border-radius:var(--radius-md);display:flex;justify-content:space-between;align-items:center}.finger-item h4{font-size:1rem;margin:0}.finger-item.pinky h4{color:var(--finger-left-pinky)}.finger-item.ring h4{color:var(--finger-left-ring)}.finger-item.middle h4{color:var(--finger-left-middle)}.finger-item.index h4{color:var(--finger-left-index)}.keys{font-family:var(--font-mono);font-size:1.25rem;font-weight:500;letter-spacing:.5em}.thumb-section{text-align:center;margin-top:2rem;padding-top:2rem;border-top:1px solid var(--border)}.thumb-section h3{color:var(--primary);margin-bottom:.5rem}.typing-tips{margin-bottom:3rem}.typing-tips h2{text-align:center;color:var(--primary);margin-bottom:3rem}.posture-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.posture-item{background:var(--white);padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-sm);text-align:center}.posture-icon{font-size:3rem;display:block;margin-bottom:1rem}.posture-item h3{color:var(--primary);margin-bottom:1rem}.posture-item ul{text-align:left;list-style:none;padding:0}.posture-item li{position:relative;padding-left:1.5rem;margin-bottom:.5rem;color:var(--muted);font-size:.875rem}.posture-item li:before{content:"•";position:absolute;left:0;color:var(--primary)}.key-facts{background:var(--white);padding:3rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.key-facts h2{text-align:center;color:var(--primary);margin-bottom:3rem}.facts-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:2rem}.fact-card{background:var(--light-gray);padding:2rem;border-radius:var(--radius-md);transition:transform .2s ease}.fact-card:hover{transform:translateY(-2px)}.fact-card h3{color:var(--primary);margin-bottom:1rem;font-size:1.125rem}.fact-card p{color:var(--muted);line-height:1.6;margin:0}@media (max-width: 768px){.keyboard-section{padding:2rem 1rem}.hands-grid{grid-template-columns:1fr;gap:2rem}.finger-assignments{padding:2rem 1rem}.posture-grid,.facts-grid{grid-template-columns:1fr}.typing-tips,.key-facts{padding:2rem 1rem}}.app{min-height:100vh;display:flex;flex-direction:column}.main-content{flex:1;padding-top:4rem;padding-bottom:2rem}.footer{background-color:var(--light-gray);padding:1.5rem 0;margin-top:auto;border-top:1px solid var(--border)}.footer-nav{display:flex;align-items:center;justify-content:center;gap:1rem;font-size:.875rem}.footer-nav a{color:var(--muted);text-decoration:none;transition:color .2s ease}.footer-nav a:hover{color:var(--primary)}.footer-nav span{color:var(--muted);opacity:.5}@media (max-width: 768px){.main-content{padding-top:3.5rem}.footer-nav{flex-wrap:wrap;gap:.5rem 1rem}}:root{--background: #FAFAFF;--primary: #7AA2F7;--accent: #F5A97F;--success: #A6E3A1;--error: #F28FAD;--muted: #6B7280;--white: #FFFFFF;--light-gray: #F3F4F6;--border: #E5E7EB;--finger-left-pinky: #DDA0DD;--finger-left-ring: #E6E6FA;--finger-left-middle: #CCCCFF;--finger-left-index: #87CEEB;--finger-right-index: #63f163;--finger-right-middle: #d5f8d5;--finger-right-ring: #FFD700;--finger-right-pinky: #FFDAB9;--font-heading: "Plus Jakarta Sans", sans-serif;--font-body: "Inter", sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 8px;--radius-md: 12px;--radius-lg: 20px;--radius-xl: 24px;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1)}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-body);color:#1f2937;background-color:var(--background);line-height:1.5;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:600;line-height:1.2}h1{font-size:2.5rem;font-weight:700}h2{font-size:2rem}h3{font-size:1.5rem}button{font-family:var(--font-body);cursor:pointer;transition:all .2s ease}input{font-family:var(--font-body)}code,.mono{font-family:var(--font-mono)}.container{max-width:1200px;margin:0 auto;padding:0 1rem}@keyframes pulse{0%,to{opacity:1}50%{opacity:.5}}@keyframes shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}@keyframes glow{0%{box-shadow:0 0 5px var(--success)}50%{box-shadow:0 0 20px var(--success),0 0 30px var(--success)}to{box-shadow:0 0 5px var(--success)}}.pulse{animation:pulse 1.5s ease-in-out infinite}.shake{animation:shake .3s ease-in-out}.glow-success{animation:glow .5s ease-in-out}@media (prefers-reduced-motion: reduce){*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}