:root{--lightningcss-light:initial;--lightningcss-dark: ;color-scheme:light dark;color:#ffffffde;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#242424;font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;font-weight:400;line-height:1.5}@media (prefers-color-scheme:dark){:root{--lightningcss-light: ;--lightningcss-dark:initial}}a{color:#646cff;-webkit-text-decoration:inherit;text-decoration:inherit;font-weight:500}a:hover{color:#535bf2}body{min-width:320px;min-height:100vh;margin:0}body.canvas-drawing{touch-action:none;width:100%;height:100%;position:fixed;overflow:hidden}@media (pointer:coarse){button,a,input[type=button],input[type=submit]{min-width:44px;min-height:44px}button,a{-webkit-user-select:none;user-select:none;-webkit-tap-highlight-color:transparent}}@media 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#4a90d94d}.settings-color-custom{align-items:center;gap:12px;display:flex}.settings-color-label{color:#666;font-size:14px}.settings-color-input{cursor:pointer;background:0 0;border:none;border-radius:8px;width:40px;height:40px;padding:0}.settings-color-input::-webkit-color-swatch-wrapper{padding:0}.settings-color-input::-webkit-color-swatch{border:2px solid #ddd;border-radius:6px}.settings-color-value{color:#888;background-color:#f5f5f5;border-radius:4px;padding:4px 8px;font-family:monospace;font-size:13px}.settings-toggle-group{flex-direction:column;gap:16px;display:flex}.settings-toggle{cursor:pointer;background-color:#f9f9f9;border-radius:8px;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;padding:12px;display:flex}.settings-toggle-label{color:#333;font-size:15px;font-weight:500}.settings-toggle-description{color:#888;flex-basis:100%;order:3;font-size:13px}.settings-toggle-switch{cursor:pointer;background-color:#ccc;border:none;border-radius:14px;width:50px;height:28px;padding:0;transition:background-color .2s;position:relative}.settings-toggle-switch.active{background-color:#4caf50}.settings-toggle-slider{background-color:#fff;border-radius:50%;width:22px;height:22px;transition:transform .2s;position:absolute;top:3px;left:3px;box-shadow:0 1px 3px #0003}.settings-toggle-switch.active .settings-toggle-slider{transform:translate(22px)}.settings-section-reset{border-top:1px solid #eee;margin-top:8px;padding-top:16px}.settings-reset-button{color:#e63946;cursor:pointer;background-color:#fff;border:2px solid #e63946;border-radius:8px;width:100%;padding:12px 20px;font-size:14px;font-weight:500;transition:all .2s}.settings-reset-button:hover{color:#fff;background-color:#e63946}[data-theme=dark] .settings-section-title{color:#eee;border-bottom-color:#444}[data-theme=dark] .settings-option-button{color:#ccc;background-color:#3d3d3d}[data-theme=dark] .settings-option-button:hover{background-color:#4d4d4d}[data-theme=dark] .settings-option-button.active{color:#6ab0f3;background-color:#2a3a4d;border-color:#6ab0f3}[data-theme=dark] .settings-color-value{color:#aaa;background-color:#3d3d3d}[data-theme=dark] .settings-toggle{background-color:#3d3d3d}[data-theme=dark] .settings-toggle-label{color:#eee}[data-theme=dark] .settings-toggle-description{color:#999}[data-theme=dark] .settings-toggle-switch{background-color:#555}[data-theme=dark] .settings-section-reset{border-top-color:#444}[data-theme=dark] .settings-reset-button{background-color:#0000}@media (max-width:480px){.settings-panel{gap:20px;padding:16px}.settings-option-group.grid-options{grid-template-columns:repeat(2,1fr)}.settings-color-custom{flex-wrap:wrap}.settings-toggle{padding:10px}}.home-page{flex-direction:column;align-items:center;min-height:calc(100vh - 60px);padding:1rem;display:flex}.home-page-content{flex-direction:column;align-items:center;gap:1.25rem;width:100%;max-width:600px;display:flex}.home-page-input-section{justify-content:center;width:100%;display:flex}.home-page-canvas-section{flex-direction:column;align-items:center;gap:.75rem;display:flex}.home-page-character-display{text-align:center;cursor:pointer;-webkit-user-select:none;user-select:none;border-radius:8px;padding:.25rem .75rem;transition:background-color .2s,transform .1s}.home-page-character-display:hover{background-color:var(--bg-hover,#0000000d)}.home-page-character-display:active{transform:scale(.98)}.home-page-character-display:focus{outline:2px solid var(--primary-color,#4a90d9);outline-offset:2px}.home-page-current-char{color:var(--text-primary,#333);font-size:1.75rem;font-weight:600}.home-page-character-info{flex-direction:column;align-items:center;gap:.25rem;margin-top:.25rem;display:flex}.home-page-pinyin{color:var(--primary-color,#4a90d9);font-size:1rem;font-weight:500}.home-page-meaning{color:var(--text-secondary,#666);text-align:center;max-width:200px;font-size:.875rem;line-height:1.3}.home-page-controls-section{justify-content:center;width:100%;display:flex}.home-page-feedback-section{width:100%;max-width:400px}.home-page-welcome{text-align:center;flex-direction:column;justify-content:center;align-items:center;padding:2rem 1rem;display:flex}.home-page-welcome-icon{margin-bottom:.75rem;font-size:3rem}.home-page-welcome-title{color:var(--text-primary,#333);margin:0 0 .5rem;font-size:1.25rem;font-weight:600}.home-page-welcome-text{color:var(--text-secondary,#666);max-width:280px;margin:0;font-size:.9rem}@media (min-width:768px) and (max-width:1023px){.home-page{min-height:calc(100vh - 60px);padding:1.5rem}.home-page-content{gap:1.5rem;max-width:500px}.home-page-welcome{padding:3rem 1.5rem}.home-page-welcome-icon{font-size:4rem}.home-page-welcome-title{font-size:1.5rem}.home-page-current-char{font-size:2rem}.home-page-pinyin{font-size:1.125rem}.home-page-meaning{max-width:250px;font-size:.9375rem}}@media (min-width:1024px){.home-page{justify-content:flex-start;min-height:100vh;padding:2rem}.home-page-content{gap:2rem;max-width:700px}.home-page-welcome{padding:4rem 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(min-width:1024px){.characters-page{min-height:100vh;padding:2rem}.characters-page-header{margin-bottom:2rem}.characters-page-title{font-size:1.75rem}.characters-page-subtitle{font-size:1rem}}.progress-page{flex-direction:column;min-height:calc(100vh - 60px);padding:1rem;display:flex}.progress-page-header{text-align:center;margin-bottom:1rem}.progress-page-title{color:var(--text-primary,#333);margin:0 0 .25rem;font-size:1.25rem;font-weight:600}.progress-page-subtitle{color:var(--text-secondary,#666);margin:0;font-size:.85rem}.progress-page-content{flex:1;width:100%;max-width:800px;margin:0 auto}@media (min-width:768px) and (max-width:1023px){.progress-page{min-height:calc(100vh - 60px);padding:1.25rem}.progress-page-header{margin-bottom:1.25rem}.progress-page-title{font-size:1.5rem}.progress-page-subtitle{font-size:.9rem}.progress-page-content{max-width:700px}}@media (min-width:1024px){.progress-page{min-height:100vh;padding:2rem}.progress-page-header{margin-bottom:2rem}.progress-page-title{font-size:1.75rem}.progress-page-subtitle{font-size:1rem}}.settings-page{flex-direction:column;min-height:calc(100vh - 60px);padding:1rem;display:flex}.settings-page-header{text-align:center;margin-bottom:1rem}.settings-page-title{color:var(--text-primary,#333);margin:0 0 .25rem;font-size:1.25rem;font-weight:600}.settings-page-subtitle{color:var(--text-secondary,#666);margin:0;font-size:.85rem}.settings-page-content{flex:1;width:100%;max-width:600px;margin:0 auto}@media (min-width:768px) and (max-width:1023px){.settings-page{min-height:calc(100vh - 60px);padding:1.25rem}.settings-page-header{margin-bottom:1.25rem}.settings-page-title{font-size:1.5rem}.settings-page-subtitle{font-size:.9rem}.settings-page-content{max-width:500px}}@media (min-width:1024px){.settings-page{min-height:100vh;padding:2rem}.settings-page-header{margin-bottom:2rem}.settings-page-title{font-size:1.75rem}.settings-page-subtitle{font-size:1rem}}.app{background-color:var(--bg-primary,#f5f5f5);flex-direction:column;min-height:100vh;display:flex}.app-main{flex-direction:column;flex:1;display:flex}:root{--bg-primary:#f5f5f5;--bg-secondary:#fff;--text-primary:#333;--text-secondary:#666;--border-color:#e0e0e0;--accent-color:#4a90d9;--success-color:#4caf50;--error-color:#f44336;--warning-color:#ff9800;--sidebar-width:220px}[data-theme=dark]{--bg-primary:#1a1a2e;--bg-secondary:#16213e;--text-primary:#e0e0e0;--text-secondary:#a0a0a0;--border-color:#2a2a4a;--accent-color:#6bb3f8;--success-color:#66bb6a;--error-color:#ef5350;--warning-color:#ffa726}*{box-sizing:border-box}body{-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:var(--bg-primary);color:var(--text-primary);margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe 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8px;display:flex}.sidebar-nav-link{color:var(--text-secondary);border-radius:8px;align-items:center;gap:12px;padding:12px 16px;font-size:15px;font-weight:500;text-decoration:none;transition:all .2s;display:flex}.sidebar-nav-link:hover{color:var(--text-primary);background-color:#0000000d}.sidebar-nav-link.active{color:var(--accent-color);background-color:#4a90d91a}.sidebar-nav-icon{text-align:center;width:24px;font-size:20px}.sidebar-nav-label{flex:1}[data-theme=dark] .app-sidebar{background-color:#1e1e1e;border-right-color:#333}[data-theme=dark] .sidebar-brand{border-bottom-color:#333}[data-theme=dark] .sidebar-nav-link:hover{background-color:#ffffff0d}[data-theme=dark] .sidebar-nav-link.active{color:#6bb3f8;background-color:#6bb3f826}}@media (min-width:768px) and (max-width:1023px){.app{flex-direction:column}.app-main{padding-top:0}}@media (max-width:767px){.app{flex-direction:column}.app-main{padding-top:0}}