@import"https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,400;0,9..144,600;0,9..144,700;1,9..144,400&family=Lexend:wght@400;500;600&family=JetBrains+Mono:wght@400;500&display=swap";:root{--bg-primary: #1a1a22;--bg-secondary: #15151c;--bg-tertiary: #252530;--bg-elevated: #2a2a38;--text-primary: #f5f0e8;--text-secondary: #c4bdb0;--text-muted: #7d776a;--accent: #f59e6b;--accent-hover: #fbb896;--accent-glow: rgba(245, 158, 107, .15);--accent-secondary: #e17055;--border: #3a3a48;--border-subtle: #2a2a35;--code-bg: #0f0f14;--success: #7ec699;--error: #f38ba8;--warning: #f5c469;--font-display: "Fraunces", Georgia, serif;--font-body: "Lexend", -apple-system, sans-serif;--font-mono: "JetBrains Mono", ui-monospace, monospace;--content-width: 780px;--sidebar-width: 280px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:var(--font-body);background:var(--bg-primary);color:var(--text-primary);line-height:1.7;font-size:15px;-webkit-font-smoothing:antialiased}.skip-link{position:absolute;top:-100px;left:16px;background:var(--accent);color:var(--bg-primary);padding:12px 20px;border-radius:6px;font-weight:600;z-index:10000;text-decoration:none;transition:top .2s}.skip-link:focus{top:16px;outline:3px solid var(--text-primary);outline-offset:2px}a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--accent);outline-offset:2px}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.docs-layout{min-height:100vh}.sidebar{position:fixed;top:0;left:0;width:var(--sidebar-width);height:100vh;background:var(--bg-secondary);border-right:1px solid var(--border-subtle);overflow-y:auto;padding-bottom:60px}.sidebar:before{content:"";position:absolute;top:0;left:0;right:0;height:200px;background:linear-gradient(180deg,rgba(245,158,107,.03) 0%,transparent 100%);pointer-events:none}.sidebar-header{padding:28px 24px;border-bottom:1px solid var(--border-subtle);position:relative;display:flex;align-items:center;gap:12px}.mobile-menu-toggle{display:none;align-items:center;justify-content:center;width:44px;height:44px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);cursor:pointer;margin-left:auto;flex-shrink:0}.mobile-menu-toggle:hover{background:var(--bg-elevated);border-color:var(--accent)}.mobile-menu-toggle .menu-icon{width:20px;height:14px;display:flex;flex-direction:column;justify-content:space-between}.mobile-menu-toggle .menu-icon span{display:block;width:100%;height:2px;background:currentColor;border-radius:1px;transition:all .2s ease}.mobile-menu-toggle.open .menu-icon span:nth-child(1){transform:translateY(6px) rotate(45deg)}.mobile-menu-toggle.open .menu-icon span:nth-child(2){opacity:0}.mobile-menu-toggle.open .menu-icon span:nth-child(3){transform:translateY(-6px) rotate(-45deg)}.logo{display:flex;align-items:center;gap:12px;text-decoration:none;color:var(--text-primary)}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--accent) 0%,var(--accent-secondary) 100%);border-radius:10px;display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:700;font-size:18px;color:var(--bg-primary);box-shadow:0 4px 12px #f59e6b40}.logo span{font-family:var(--font-display);font-size:22px;font-weight:600;letter-spacing:-.02em}.sidebar-nav{padding:24px 0;position:relative}.nav-section{padding:0 20px;margin-bottom:28px}.nav-section-title{font-size:10px;font-weight:600;text-transform:uppercase;letter-spacing:1.5px;color:var(--text-muted);margin-bottom:10px;padding-left:12px}.nav-link{display:block;padding:8px 14px;margin:2px 0;color:var(--text-secondary);text-decoration:none;font-size:14px;font-weight:450;border-radius:8px;transition:all .15s ease;position:relative}.nav-link:hover{color:var(--text-primary);background:var(--bg-tertiary)}.nav-link.active{color:var(--accent);background:var(--accent-glow)}.nav-link.active:before{content:"";position:absolute;left:0;top:50%;transform:translateY(-50%);width:3px;height:18px;background:var(--accent);border-radius:0 2px 2px 0}.nav-link-playground{background:var(--accent-glow);border:1px solid var(--accent);color:var(--accent);font-weight:500}.nav-link-playground:hover{background:var(--accent);color:var(--bg-primary)}.content{margin-left:var(--sidebar-width);padding:48px 64px 80px;max-width:calc(var(--content-width) + var(--sidebar-width) + 128px)}article{max-width:var(--content-width)}h1{font-family:var(--font-display);font-size:42px;font-weight:700;margin-bottom:20px;color:var(--text-primary);letter-spacing:-.02em;line-height:1.2}h2{font-family:var(--font-display);font-size:28px;font-weight:600;margin-top:64px;margin-bottom:20px;padding-top:32px;border-top:1px solid var(--border-subtle);color:var(--text-primary);letter-spacing:-.015em;position:relative}h2:before{content:"";position:absolute;top:-1px;left:0;width:48px;height:2px;background:linear-gradient(90deg,var(--accent) 0%,transparent 100%)}h3{font-family:var(--font-display);font-size:19px;font-weight:600;margin-top:40px;margin-bottom:14px;color:var(--text-primary);letter-spacing:-.01em}section:first-child h1{margin-top:0}section:first-child h2{border-top:none;padding-top:0}section:first-child h2:before{display:none}p{margin-bottom:18px;color:var(--text-secondary)}.lead{font-size:19px;line-height:1.75;color:var(--text-primary);font-weight:400}a{color:var(--accent);text-decoration:none;transition:color .15s ease}a:hover{color:var(--accent-hover);text-decoration:underline;text-underline-offset:3px}ul,ol{margin-bottom:20px;padding-left:24px;color:var(--text-secondary)}li{margin-bottom:10px}code{font-family:var(--font-mono);font-size:13px;background:var(--code-bg);padding:3px 7px;border-radius:5px;color:var(--accent);border:1px solid var(--border-subtle)}pre{background:var(--code-bg);padding:24px;border-radius:12px;overflow-x:auto;margin-bottom:28px;border:1px solid var(--border);position:relative}pre:before{content:"";position:absolute;top:0;left:0;width:3px;height:100%;background:linear-gradient(180deg,var(--accent) 0%,transparent 60%);border-radius:12px 0 0 12px}pre code{background:none;padding:0;color:var(--text-primary);font-size:14px;line-height:1.65;border:none}table{width:100%;border-collapse:collapse;margin-bottom:28px;border-radius:12px;overflow:hidden}th,td{text-align:left;padding:14px 18px;border-bottom:1px solid var(--border-subtle)}th{font-weight:600;color:var(--text-primary);background:var(--bg-secondary);font-size:13px;text-transform:uppercase;letter-spacing:.5px}td{color:var(--text-secondary)}td code{font-size:12px}.feature-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:20px;margin:36px 0}.feature{background:var(--bg-secondary);padding:28px;border-radius:16px;border:1px solid var(--border-subtle);transition:border-color .2s ease,transform .2s ease}.feature:hover{border-color:var(--border);transform:translateY(-2px)}.feature h3{margin-top:0;margin-bottom:10px;font-size:17px}.feature p{margin-bottom:0;font-size:14px}.docs-footer{margin-top:80px;padding-top:28px;border-top:1px solid var(--border-subtle);color:var(--text-muted);font-size:14px}.playground-section{margin-bottom:48px}.playground-container{background:var(--bg-secondary);border:1px solid var(--border);border-radius:16px;overflow:hidden;margin-top:28px;box-shadow:0 4px 24px #0003}.playground-controls{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;background:var(--bg-tertiary);border-bottom:1px solid var(--border);gap:12px;flex-wrap:wrap}.playground-controls select{padding:10px 14px;background:var(--bg-primary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-family:var(--font-body);font-size:14px;cursor:pointer;min-width:180px;transition:border-color .15s ease}.playground-controls select:hover{border-color:var(--accent)}.playground-controls select:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}.playground-toolbar{display:flex;align-items:center;gap:10px}.playground-main{display:grid;grid-template-columns:1fr 1fr;min-height:500px}.editor-panel{display:flex;flex-direction:column;border-right:1px solid var(--border);overflow:hidden}.panel-header{display:flex;align-items:center;justify-content:space-between;padding:10px 18px;background:var(--bg-secondary);border-bottom:1px solid var(--border)}.panel-title{font-size:11px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:1px}#editor{flex:1;overflow:auto;min-height:300px}#editor .cm-editor{height:100%}.preview-panel{display:flex;flex-direction:column;background:var(--bg-secondary);overflow:hidden}.canvas-container{flex:1;display:flex;align-items:center;justify-content:center;background:var(--code-bg);overflow:hidden;padding:24px;min-height:300px;background-image:radial-gradient(circle at 1px 1px,var(--border-subtle) 1px,transparent 0);background-size:20px 20px}#canvas{background:#fff;border-radius:8px;box-shadow:0 8px 32px #00000059;max-width:100%;max-height:100%}.console-panel{height:120px;border-top:1px solid var(--border);display:flex;flex-direction:column}#console-output{flex:1;overflow-y:auto;padding:14px 18px;font-family:var(--font-mono);font-size:13px;line-height:1.5}.console-log{color:var(--text-secondary)}.console-error{color:var(--error)}.btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text-primary);font-family:var(--font-body);font-size:13px;font-weight:500;cursor:pointer;transition:all .15s ease}.btn:hover{background:var(--bg-elevated);border-color:var(--text-muted)}.btn-primary{background:var(--accent);border-color:var(--accent);color:var(--bg-primary)}.btn-primary:hover{background:var(--accent-hover);border-color:var(--accent-hover)}.btn-danger{background:transparent;border-color:var(--error);color:var(--error)}.btn-danger:hover{background:#f38ba81a}.btn-small{padding:5px 10px;font-size:12px}.toggle-label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary);cursor:pointer}.toggle-label input{width:16px;height:16px;accent-color:var(--accent);cursor:pointer}@media(max-width:900px){.playground-main{grid-template-columns:1fr;grid-template-rows:1fr 1fr}.editor-panel{border-right:none;border-bottom:1px solid var(--border)}.playground-controls{flex-direction:column;align-items:stretch}.playground-toolbar{justify-content:flex-end}}.mini-playground{display:grid;grid-template-columns:1fr 240px;gap:1px;background:var(--border);border:1px solid var(--border);position:relative;border-radius:14px;overflow:hidden;margin:24px 0;box-shadow:0 4px 20px #00000026}.mini-editor-panel{display:flex;flex-direction:column;background:var(--bg-secondary)}.mini-editor{flex:1;min-height:120px;max-height:260px;overflow:auto}.mini-editor .cm-editor{height:100%;font-size:13px}.mini-editor .cm-scroller{padding:14px}.mini-toolbar{display:flex;gap:8px;padding:10px 14px;background:var(--bg-tertiary);border-top:1px solid var(--border)}.mini-toolbar .btn-copy{margin-left:auto;padding:6px 8px;display:flex;align-items:center;justify-content:center}.mini-toolbar .btn-copy svg{width:14px;height:14px}.mini-toolbar .btn-copy.copied{color:var(--success);border-color:var(--success)}.mini-preview-panel{display:flex;flex-direction:column;background:var(--code-bg);background-image:radial-gradient(circle at 1px 1px,var(--border-subtle) 1px,transparent 0);background-size:16px 16px;align-items:center;justify-content:flex-start;padding:10px}.canvas-wrapper{position:relative;display:inline-block}.mini-canvas{width:250px;height:250px;background:#fff;border-radius:8px;box-shadow:0 4px 16px #00000040,0 0 0 1px #ffffff0d;image-rendering:-webkit-optimize-contrast;image-rendering:crisp-edges;cursor:crosshair}.mouse-position{position:absolute;bottom:8px;left:8px;background:#000000b3;color:var(--accent);font-family:var(--font-mono);font-size:11px;padding:4px 8px;border-radius:4px;pointer-events:none}.mini-console{width:100%;flex:1;min-height:40px;max-height:100px;overflow-y:auto;padding:10px 12px;font-family:var(--font-mono);font-size:11px;line-height:1.5;border-top:1px solid var(--border);background:var(--code-bg);margin-top:10px;border-radius:6px}.mini-playground-console-only{max-width:100%}.mini-playground-console-only .mini-preview-panel{flex:0 0 auto;min-width:200px;max-width:280px}.mini-playground-console-only canvas{display:none!important}.mini-playground-console-only .var-inspector{display:none!important}.mini-playground-console-only .mini-console{min-height:60px;max-height:120px;margin-top:0;font-size:14px}.mini-console .console-log{color:var(--text-secondary);padding:2px 0}.mini-console .console-error{display:flex;flex-wrap:wrap;align-items:flex-start;gap:6px;padding:8px 10px;margin:4px 0;background:#f38ba81a;border-radius:6px;border-left:3px solid var(--error)}.mini-console .error-icon{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;background:var(--error);color:var(--bg-primary);border-radius:50%;font-size:10px;font-weight:700;flex-shrink:0}.mini-console .error-text{color:var(--error);flex:1;min-width:0}.mini-console .error-hint{width:100%;color:var(--text-muted);font-size:10px;margin-top:4px;padding-left:22px;font-style:italic}.error-modal{position:absolute;inset:0;background:#000000d9;display:flex;align-items:center;justify-content:center;z-index:100;animation:fadeIn .2s ease;padding:12px;overflow-y:auto}.error-modal.fade-out{animation:fadeOut .3s ease forwards}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}@keyframes fadeOut{0%{opacity:1}to{opacity:0}}.error-modal-content{background:var(--bg-elevated);border-radius:12px;padding:20px;max-width:320px;width:100%;text-align:center;border:2px solid var(--error);box-shadow:0 8px 32px #f38ba84d;max-height:90vh;overflow-y:auto;margin:auto}.error-modal-title{font-size:16px;font-weight:600;color:var(--error);margin-bottom:12px}.error-modal-message{font-family:var(--font-mono);font-size:13px;color:var(--text-primary);background:var(--bg-tertiary);padding:12px;border-radius:6px;margin-bottom:12px;text-align:left;word-break:break-word}.error-modal-hint{font-size:13px;color:var(--text-secondary);margin-bottom:16px;padding:10px;background:#f59e6b1a;border-radius:6px;border-left:3px solid var(--accent);text-align:left}.error-modal-dismiss{background:var(--accent);color:var(--bg-primary);border:none;padding:10px 20px;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;transition:background .15s ease}.error-modal-dismiss:hover{background:var(--accent-hover)}.warning-toast{position:absolute;bottom:12px;left:12px;right:12px;display:flex;align-items:flex-start;gap:10px;background:#f5c46926;border:1px solid var(--warning);border-radius:8px;padding:12px;z-index:90;animation:slideUp .3s ease}@keyframes slideUp{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.warning-toast.fade-out{animation:fadeOut .3s ease forwards}.warning-icon{display:flex;align-items:center;justify-content:center;width:20px;height:20px;background:var(--warning);color:var(--bg-primary);border-radius:50%;font-size:12px;font-weight:700;flex-shrink:0}.warning-content{flex:1;min-width:0}.warning-message{color:var(--warning);font-weight:500;font-size:13px;line-height:1.3}.warning-hint{color:var(--text-secondary);font-size:12px;margin-top:4px;line-height:1.4}.warning-dismiss{background:transparent;border:1px solid var(--warning);color:var(--warning);padding:4px 10px;border-radius:4px;font-size:12px;font-weight:500;cursor:pointer;transition:all .15s ease;flex-shrink:0}.warning-dismiss:hover{background:var(--warning);color:var(--bg-primary)}.var-inspector{background:var(--bg-tertiary);border-top:1px solid var(--border);padding:6px 10px;font-family:var(--font-mono);font-size:11px;max-height:80px;overflow-y:auto}.var-inspector-header{color:var(--text-muted);font-size:9px;text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px;font-weight:500}.var-inspector-row{display:flex;align-items:center;gap:6px;padding:2px 0;border-bottom:1px solid var(--border-subtle)}.var-inspector-row:last-child{border-bottom:none}.var-name{color:var(--accent);font-weight:500;min-width:50px}.var-value{color:var(--text-secondary);flex:1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.try-it{display:inline-block;font-size:13px;color:var(--accent);margin-bottom:10px;font-weight:500}@media(max-width:700px){.mini-playground{grid-template-columns:1fr}.mini-preview-panel{border-top:1px solid var(--border);padding:16px}.mini-canvas{width:100%;max-width:320px;height:auto;aspect-ratio:1 / 1;border-radius:8px}.mini-console{margin-top:12px;max-height:100px;font-size:13px}.mini-console .console-error{font-size:13px}.mini-console .error-hint{font-size:11px}.mini-editor{min-height:150px;max-height:200px}.mini-editor .cm-editor{font-size:14px}.mini-toolbar .btn{min-height:44px;min-width:44px;padding:8px 14px;font-size:14px}.mini-toolbar .btn-copy{padding:8px 12px}}@media(max-width:400px){.mini-playground{max-height:70vh;overflow-y:auto}.mini-canvas{max-width:min(220px,80vw);max-height:min(220px,40vh)}.mini-editor{min-height:100px;max-height:140px}.mini-preview-panel{padding:8px}.mistake-card{margin:0 -8px;border-radius:8px}}@media(hover:none)and (pointer:coarse){.content{padding-bottom:200px}.mini-playground{position:relative}.error-modal{padding:8px}.error-modal-content{max-width:100%;padding:16px}.error-modal-message{font-size:12px}.nav-link:active{background:var(--bg-tertiary);color:var(--text-primary);transform:scale(.98)}.btn:active{transform:scale(.96);opacity:.9}.mini-canvas:active{opacity:.95;box-shadow:inset 0 0 0 2px var(--accent)}.mobile-menu-toggle:active{background:var(--bg-elevated);transform:scale(.95)}.whats-next-link:active,.section-nav-link:active{background:var(--accent);color:var(--bg-primary);transform:scale(.98)}.try-challenge li:active{background:var(--bg-elevated)}}#reference{position:relative}#reference h2{display:flex;align-items:center;gap:16px}.print-btn{display:inline-flex;align-items:center;gap:6px;padding:6px 12px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);font-family:var(--font-body);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s ease;margin-left:auto}.print-btn:hover{background:var(--accent);border-color:var(--accent);color:var(--bg-primary)}.print-btn svg{width:14px;height:14px}#reference h3{font-size:16px;margin-top:28px;margin-bottom:10px;padding-bottom:6px;border-bottom:1px solid var(--border-subtle);color:var(--accent)}#reference ul{list-style:none;padding-left:0;margin-bottom:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:6px 24px}#reference li{margin-bottom:4px;font-size:13px;line-height:1.5}#reference li code{font-size:12px;padding:2px 5px}.quick-start-card{background:linear-gradient(135deg,#f59e6b14,#e170550a);border:1px solid var(--border);border-radius:12px;padding:24px 28px;margin:28px 0 32px}.quick-start-header{margin-bottom:20px}.quick-start-badge{display:inline-block;background:var(--accent);color:#1a1a22;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;padding:4px 10px;border-radius:100px;margin-bottom:8px}.quick-start-header h3{margin:0;font-family:var(--font-display);font-size:20px;color:var(--text-primary);border:none;padding:0}.quick-start-concepts{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-bottom:16px}.concept-item{display:flex;align-items:flex-start;gap:12px;padding:12px 14px;background:var(--bg-tertiary);border-radius:8px;border:1px solid var(--border-subtle)}.concept-keyword{font-family:var(--font-mono);font-size:14px;font-weight:600;color:var(--accent);background:var(--code-bg);padding:4px 10px;border-radius:4px;flex-shrink:0;min-width:42px;text-align:center}.concept-desc{font-size:13px;line-height:1.5;color:var(--text-secondary)}.concept-desc strong{color:var(--text-primary)}.concept-desc code{font-size:11px;padding:2px 5px;background:var(--code-bg)}.quick-start-tip{margin:0;padding:10px 14px;background:#7ec6991a;border-left:3px solid var(--success);border-radius:0 6px 6px 0;font-size:13px;color:var(--success)}@media(max-width:700px){.quick-start-concepts{grid-template-columns:1fr;gap:10px}.quick-start-card{padding:20px;margin:24px 0 28px}.concept-item{padding:10px 12px}}.syntax-guide{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:10px;padding:20px;margin:24px 0}.syntax-intro{font-size:14px;color:var(--text-secondary);margin-bottom:16px;line-height:1.6}.syntax-guide-title{font-size:14px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:16px}.syntax-items{display:grid;grid-template-columns:repeat(2,1fr);gap:12px}.syntax-item{display:flex;flex-direction:column;gap:4px;padding:12px;background:var(--bg-secondary);border-radius:8px}.syntax-symbol{font-family:var(--font-mono);font-size:18px;font-weight:600;color:var(--accent);background:none;padding:0}.syntax-meaning{font-size:13px;color:var(--text-primary)}.syntax-example{font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}@media(max-width:600px){.syntax-items{grid-template-columns:1fr}}.hero-example{margin:28px 0}.hero-prompt{font-size:17px;font-weight:500;color:var(--accent);margin-bottom:16px}.hero-explanation{font-size:15px;color:var(--text-secondary);margin:20px 0 32px;padding:16px 20px;background:var(--bg-tertiary);border-radius:10px;border-left:3px solid var(--accent)}.timing-diagram{margin-top:16px;padding:16px;background:var(--bg-secondary);border-radius:8px;border:1px solid var(--border-subtle)}.timing-title{font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:12px;font-weight:500}.timing-flow{display:flex;align-items:center;gap:8px;overflow-x:auto;padding-bottom:8px}.timing-block{padding:10px 14px;border-radius:6px;text-align:center;flex-shrink:0}.timing-setup{background:#7ec69933;border:1px solid var(--success)}.timing-draw{background:#f59e6b33;border:1px solid var(--accent)}.timing-fade{opacity:.6}.timing-label{font-family:var(--font-mono);font-size:12px;font-weight:600;color:var(--text-primary)}.timing-desc{font-size:10px;color:var(--text-muted);margin-top:2px}.timing-arrow{color:var(--text-muted);font-size:11px;flex-shrink:0}.timing-loop{display:flex;align-items:center;gap:8px;padding:8px;background:#f59e6b0d;border-radius:6px;border:1px dashed var(--border)}.timing-note{font-size:11px;color:var(--text-muted);margin-top:10px;text-align:center;font-style:italic}@media(max-width:600px){.timing-flow,.timing-loop{flex-wrap:wrap;justify-content:center}}.range-diagram{margin:16px 0}.range-example{display:flex;align-items:center;gap:16px;flex-wrap:wrap}.range-code{font-size:18px;font-weight:600;color:var(--accent);background:var(--bg-secondary);padding:8px 14px;border-radius:6px}.range-visual{display:flex;gap:4px}.range-num{display:flex;align-items:center;justify-content:center;width:32px;height:32px;border-radius:6px;font-family:var(--font-mono);font-size:14px;font-weight:600}.range-num.included{background:#7ec6994d;border:2px solid var(--success);color:var(--success)}.range-num.excluded{background:#f38ba833;border:2px dashed var(--error);color:var(--error);opacity:.7;text-decoration:line-through}.range-result{font-size:13px;color:var(--text-muted);font-style:italic}@media(max-width:480px){.range-example{flex-direction:column;align-items:flex-start}.range-num{width:28px;height:28px;font-size:12px}}.concept-box{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:10px;margin:20px 0;overflow:hidden}.concept-box-header{background:linear-gradient(135deg,#f59e6b26,#e170551a);padding:12px 16px;font-weight:600;font-size:14px;color:var(--accent);border-bottom:1px solid var(--border)}.concept-box-content{padding:16px}.concept-box-content p{margin:0 0 12px;line-height:1.6}.concept-box-content p:last-child{margin-bottom:0}.coord-visual{margin:12px 0;display:flex;justify-content:center}.coord-diagram{position:relative;width:160px;height:100px;background:var(--bg-secondary);border:2px solid var(--border);border-radius:8px}.coord-origin{position:absolute;top:8px;left:8px;font-family:var(--font-mono);font-size:12px;color:var(--accent);font-weight:600}.coord-arrow-x{position:absolute;top:10px;right:8px;font-size:11px;color:var(--text-muted)}.coord-arrow-y{position:absolute;bottom:8px;left:8px;font-size:11px;color:var(--text-muted)}.coord-point{position:absolute;top:40px;left:80px;font-family:var(--font-mono);font-size:11px;color:var(--success);background:#7ec69933;padding:2px 6px;border-radius:4px}.why-box{margin-top:12px;padding:10px 14px;background:#7ec6991a;border-left:3px solid var(--success);border-radius:0 6px 6px 0;font-size:13px;line-height:1.5;color:var(--text-secondary)}.why-box strong{color:var(--success);font-weight:600}.why-box code{background:#0003;padding:1px 5px;border-radius:3px;font-size:12px}.mistake-cards{display:grid;gap:20px;margin:24px 0}.mistake-card{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:12px;overflow:hidden}.mistake-header{background:#f38ba826;padding:12px 16px;border-bottom:1px solid var(--border)}.mistake-symptom{font-weight:600;color:var(--error);font-size:15px}.mistake-reason,.mistake-fix{padding:12px 16px;font-size:14px;line-height:1.5}.mistake-reason{background:var(--bg-secondary);border-bottom:1px solid var(--border-subtle)}.mistake-fix{background:#7ec6991a}.mistake-fix strong{color:var(--success)}.mistake-reason strong{color:var(--text-muted)}.mistake-example{border-top:1px solid var(--border)}.tip-box{background:#f59e6b1a;border:1px solid var(--accent);border-radius:10px;padding:16px 20px;margin:24px 0;font-size:14px;line-height:1.6}.tip-box strong{color:var(--accent)}.debugging-guide{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:12px;padding:24px;margin:24px 0}.debugging-guide h3{margin:0 0 8px;font-size:18px;color:var(--text-primary)}.debug-steps{display:grid;gap:16px;margin:20px 0}.debug-step{display:flex;gap:16px;align-items:flex-start}.debug-step-number{width:28px;height:28px;min-width:28px;background:var(--accent);color:var(--bg-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:600;font-size:14px}.debug-step-content{flex:1}.debug-step-content strong{display:block;margin-bottom:4px;color:var(--text-primary)}.debug-step-content p{margin:0;color:var(--text-secondary);font-size:14px;line-height:1.5}.debug-step-content pre.code-snippet{margin:10px 0 0;font-size:13px}.debug-step-content .simple-list{margin-top:8px}.debug-step-content .simple-list li{padding:4px 0 4px 20px;font-size:14px;color:var(--text-secondary)}.debug-step-content .simple-list li:before{width:6px;height:6px;top:10px}.simple-list{margin:0;padding-left:0;list-style:none}.simple-list li{position:relative;padding:6px 0 6px 24px;line-height:1.5}.simple-list li:before{content:"";position:absolute;left:0;top:12px;width:8px;height:8px;background:var(--accent);border-radius:50%}.simple-list li strong{color:var(--accent);font-family:var(--font-mono)}.learning-path{background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--bg-secondary) 100%);border:1px solid var(--border);border-radius:12px;padding:20px 24px;margin:24px 0}.learning-path-header{font-size:16px;font-weight:600;color:var(--accent);margin-bottom:12px}.learning-path-content p{margin:0 0 12px;color:var(--text-secondary);font-size:14px}.learning-path-steps{margin:0;padding-left:0;list-style:none;counter-reset:step}.learning-path-steps li{position:relative;padding:8px 0 8px 36px;font-size:14px;line-height:1.5;color:var(--text-primary);counter-increment:step}.learning-path-steps li:before{content:counter(step);position:absolute;left:0;top:6px;width:24px;height:24px;background:var(--accent);color:var(--bg-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:12px;font-weight:600}.learning-path-steps li strong{color:var(--text-primary)}.learning-path-steps li a{color:var(--accent);text-decoration:none}.learning-path-steps li a:hover{text-decoration:underline}.learning-path-tip{margin-top:16px!important;padding-top:12px;border-top:1px solid var(--border-subtle);font-style:italic;color:var(--text-muted)!important}.frame-diagram{display:flex;align-items:center;justify-content:center;gap:8px;padding:20px 10px;margin:16px 0;background:var(--bg-secondary);border-radius:8px;flex-wrap:wrap}.frame-item{display:flex;flex-direction:column;align-items:center;gap:6px}.frame-label{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted)}.frame-visual{background:var(--accent);color:var(--bg-primary);padding:8px 14px;border-radius:6px;font-family:var(--font-mono);font-size:14px;font-weight:600}.frame-arrow{color:var(--text-muted);font-size:12px;font-style:italic}@media(max-width:500px){.frame-diagram{gap:6px;padding:16px 8px}.frame-visual{padding:6px 10px;font-size:12px}}.palette-grid{display:flex;flex-direction:column;gap:10px;margin:16px 0 24px;padding:16px;background:var(--bg-tertiary);border-radius:10px}.palette-row{display:flex;align-items:center;gap:8px}.palette-name{font-family:var(--font-mono);font-size:13px;color:var(--text-secondary);width:70px;flex-shrink:0}.palette-swatch{width:28px;height:28px;border-radius:6px;box-shadow:0 1px 3px #0000004d}@media(max-width:500px){.palette-grid{padding:12px}.palette-name{width:60px;font-size:12px}.palette-swatch{width:22px;height:22px}}.tip{padding:12px 16px;background:#7ec6991a;border-left:3px solid var(--success);border-radius:0 8px 8px 0;font-size:14px;line-height:1.6;margin:16px 0}.tip strong{color:var(--success)}.tip-inline{display:block;margin-top:8px;font-size:13px;color:var(--text-muted);font-style:italic}.step-guide{margin:24px 0}.step{display:flex;gap:16px;margin-bottom:24px;padding-bottom:24px;border-bottom:1px solid var(--border)}.step:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.step-number{flex-shrink:0;width:36px;height:36px;background:var(--accent);color:var(--bg-primary);border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:16px}.step-content{flex:1}.step-content h4{margin:0 0 8px;font-size:16px;color:var(--text-primary)}.step-content p{margin:0 0 12px;line-height:1.6}.code-snippet{background:var(--bg-secondary);border:1px solid var(--border);border-radius:6px;padding:12px 16px;font-family:var(--font-mono);font-size:13px;color:var(--text-primary);overflow-x:auto;margin:0}.try-challenge{background:linear-gradient(135deg,#f59e6b1a,#e170550d);border:1px solid var(--accent);border-radius:10px;margin:24px 0;overflow:hidden}.try-challenge-header{background:var(--accent);color:var(--bg-primary);padding:10px 16px;font-weight:600;font-size:14px}.challenge-list{margin:0;padding:16px 16px 16px 36px;list-style:decimal}.challenge-list li{padding:6px 0;line-height:1.6}.challenge-list li code{background:var(--bg-tertiary);padding:2px 6px;border-radius:4px;font-size:12px}@media(max-width:500px){.step{flex-direction:column;gap:12px}.step-number{width:28px;height:28px;font-size:14px}}.whats-next{display:flex;align-items:center;gap:12px;padding:16px 20px;margin-top:32px;background:var(--bg-tertiary);border-radius:10px;border:1px solid var(--border)}.whats-next-label{font-size:12px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);flex-shrink:0}.whats-next-link{color:var(--accent);font-weight:500;text-decoration:none;transition:color .15s}.whats-next-link:hover{color:var(--accent-hover);text-decoration:underline}.whats-next-link:after{content:" →";opacity:.7}@media(max-width:500px){.whats-next{flex-direction:column;align-items:flex-start;gap:8px}}.coming-soon{margin-top:48px;padding:32px;background:linear-gradient(135deg,#f59e6b0d,#e170550d);border-radius:12px;border:1px solid var(--border)}.coming-soon h2{font-size:22px;margin-bottom:12px;color:var(--accent)}.coming-soon p{color:var(--text-secondary);margin-bottom:20px}.coming-soon ul{list-style:none;padding-left:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px}.coming-soon li{padding:8px 12px;background:var(--bg-tertiary);border-radius:8px;font-size:14px;border-left:3px solid var(--accent)}.coming-soon li strong{color:var(--text-primary)}.coming-soon li code{font-size:12px;padding:2px 5px}.troubleshoot-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:20px;margin-top:24px}.troubleshoot-item{background:var(--bg-tertiary);border-radius:12px;padding:20px;border:1px solid var(--border);transition:border-color .2s}.troubleshoot-item:hover{border-color:var(--accent)}.troubleshoot-problem{font-weight:600;color:var(--error);margin-bottom:12px;font-size:15px;display:flex;align-items:center;gap:8px}.troubleshoot-problem:before{content:"!";display:inline-flex;align-items:center;justify-content:center;width:20px;height:20px;background:var(--error);color:var(--bg-primary);border-radius:50%;font-size:12px;font-weight:700;flex-shrink:0}.troubleshoot-solutions{font-size:14px;color:var(--text-secondary)}.troubleshoot-solutions ul{list-style:none;padding:0;margin:0}.troubleshoot-solutions li{padding:6px 0 6px 20px;position:relative}.troubleshoot-solutions li:before{content:"✓";position:absolute;left:0;color:var(--success);font-weight:600}.troubleshoot-solutions code{font-size:13px;padding:2px 6px;background:var(--code-bg);border-radius:4px}@media(max-width:500px){.troubleshoot-grid{grid-template-columns:1fr}.troubleshoot-item{padding:16px}}.device-tips{display:flex;flex-direction:column;gap:16px;margin-top:16px}.device-tip{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:12px;overflow:hidden}.device-tip-header{background:var(--bg-elevated);padding:12px 16px;font-weight:600;font-size:14px;color:var(--accent);border-bottom:1px solid var(--border)}.device-tip ul{padding:16px 16px 16px 32px;margin:0}.device-tip li{margin-bottom:8px;font-size:14px;line-height:1.5;color:var(--text-secondary)}.device-tip li:last-child{margin-bottom:0}.device-tip li strong{color:var(--text-primary)}.device-tip code{font-size:13px;padding:2px 6px;background:var(--code-bg);border-radius:4px}.device-tip kbd{display:inline-block;padding:2px 6px;font-family:var(--font-mono);font-size:12px;background:var(--bg-secondary);border:1px solid var(--border);border-radius:4px;box-shadow:0 1px 2px #0003}.frame-timeline{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:16px;margin:16px 0}.frame-timeline-title{font-size:13px;font-weight:600;color:var(--text-secondary);margin-bottom:12px}.frame-timeline-row{display:flex;gap:8px;overflow-x:auto;padding-bottom:8px}.frame-time-block{flex:0 0 auto;background:var(--bg-elevated);border:1px solid var(--border);border-radius:6px;padding:8px 12px;text-align:center;min-width:70px}.frame-time-block.fade{opacity:.6}.frame-time{font-size:11px;color:var(--text-muted);margin-bottom:4px}.frame-value{font-family:var(--font-mono);font-size:12px;color:var(--accent)}.frame-timeline-note{font-size:12px;color:var(--text-muted);margin-top:8px}.coord-comparison{display:flex;align-items:center;justify-content:center;gap:12px;margin:16px 0 8px;flex-wrap:wrap}.coord-compare-item{background:var(--bg-secondary);border-radius:6px;padding:8px 12px;text-align:center}.coord-compare-label{font-size:11px;color:var(--text-muted);margin-bottom:4px}.coord-compare-desc{font-size:13px;color:var(--text-primary)}.coord-compare-vs{font-size:12px;font-weight:600;color:var(--text-muted)}.timing-comparison{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin:12px 0}@media(max-width:500px){.timing-comparison{grid-template-columns:1fr}}.timing-bad,.timing-good{padding:12px;border-radius:8px;font-size:12px}.timing-bad{background:#f38ba81a;border:1px solid rgba(243,139,168,.3)}.timing-good{background:#7ec6991a;border:1px solid rgba(126,198,153,.3)}.timing-label{font-weight:600;margin-bottom:8px;color:var(--text-primary)}.timing-frames{display:flex;flex-direction:column;gap:2px;margin-bottom:8px;color:var(--text-secondary)}.timing-result{font-weight:500;color:var(--text-primary)}.timing-bad .timing-result{color:var(--error)}.timing-good .timing-result{color:var(--success)}.loop-order-box{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:12px 16px;margin:12px 0;font-size:13px}.loop-order-title{font-weight:600;color:var(--text-secondary);margin-bottom:8px}.loop-order-flow{font-family:var(--font-mono);line-height:1.6;color:var(--text-secondary)}.loop-order-flow code{color:var(--accent);background:none;padding:0}.loop-order-note{color:var(--text-muted);font-style:italic}.error-fix-example{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:12px;padding:16px;margin-top:20px}.error-fix-title{font-weight:600;font-size:14px;color:var(--text-primary);margin-bottom:12px}.error-fix-content{display:grid;grid-template-columns:1fr 1fr;gap:12px}@media(max-width:500px){.error-fix-content{grid-template-columns:1fr}}.error-fix-wrong,.error-fix-right{border-radius:8px;padding:12px}.error-fix-wrong{background:#f38ba81a;border:1px solid rgba(243,139,168,.3)}.error-fix-right{background:#7ec6991a;border:1px solid rgba(126,198,153,.3)}.error-fix-label{font-size:11px;font-weight:600;text-transform:uppercase;margin-bottom:8px}.error-fix-wrong .error-fix-label{color:var(--error)}.error-fix-right .error-fix-label{color:var(--success)}.error-fix-example pre{margin:0;font-size:12px;line-height:1.5;font-family:var(--font-mono);color:var(--text-secondary);white-space:pre-wrap}.error-fix-tip{margin-top:12px;font-size:13px;color:var(--text-muted)}.touch-info-box{background:var(--bg-tertiary);border:1px solid var(--accent);border-left-width:3px;border-radius:8px;padding:16px;margin:16px 0}.touch-info-header{font-weight:600;font-size:14px;color:var(--accent);margin-bottom:8px}.touch-info-content{font-size:14px}.touch-info-content p{margin-bottom:8px;color:var(--text-secondary)}.touch-info-content .simple-list{margin:0}@media(max-width:1100px){.content{padding:40px 40px 60px}}@media(max-width:900px){.docs-layout{display:block}.sidebar{position:sticky;top:0;width:100%;height:auto;max-height:none;border-right:none;border-bottom:1px solid var(--border);z-index:100;background:var(--bg-secondary)}.sidebar:before{display:none}.sidebar-header{padding:16px 20px}.logo-icon{width:32px;height:32px;font-size:16px}.logo span{font-size:18px}.sidebar-nav{display:none;padding:0 20px 16px;max-height:60vh;overflow-y:auto}.sidebar-nav.open{display:block}.sidebar-overlay{display:none;position:fixed;inset:0;background:#00000080;z-index:99;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}.sidebar-overlay.visible{display:block}.nav-section{margin-bottom:16px}.nav-section-title{margin-bottom:8px}.nav-link{padding:10px 14px;font-size:15px}.mobile-menu-toggle{display:flex}.content{margin-left:0;padding:24px 20px 60px}article{max-width:100%}h1{font-size:28px;line-height:1.25}h2{font-size:22px;margin-top:48px;padding-top:24px}h3{font-size:17px;margin-top:32px}.lead{font-size:17px}p{font-size:15px}.feature-grid{grid-template-columns:1fr;gap:16px}.feature{padding:20px}code{font-size:12px;padding:2px 5px}pre{padding:16px;border-radius:10px;margin-bottom:20px}pre code{font-size:13px}#reference ul{grid-template-columns:1fr;gap:4px}#reference li{font-size:14px}.print-btn{font-size:11px;padding:5px 10px}}@media(max-width:480px){.content{padding:20px 16px 48px}h1{font-size:24px}h2{font-size:20px;margin-top:40px}h3,.lead{font-size:16px}.print-btn{display:none}}.state-stack-diagram{margin:16px 0;padding:16px;background:var(--bg-tertiary);border-radius:8px}.stack-visual{display:flex;gap:24px;align-items:flex-start;flex-wrap:wrap}.stack-column{display:flex;flex-direction:column;gap:4px}.stack-title{font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:8px}.stack-item{padding:8px 14px;border-radius:6px;font-family:var(--font-mono);font-size:12px;background:var(--bg-secondary);border:1px solid var(--border)}.stack-item.saved{background:var(--accent);color:var(--bg-primary);border-color:var(--accent);opacity:.7}.stack-item.active{background:var(--bg-secondary);border:2px solid var(--accent);font-weight:600}.stack-actions{display:flex;flex-direction:column;gap:12px}.stack-action{display:flex;align-items:center;gap:10px}.stack-action code{background:var(--code-bg);padding:6px 10px;border-radius:4px;font-size:12px}.stack-action.push code{color:var(--success)}.stack-action.pop code{color:var(--warning)}.stack-action span{font-size:12px;color:var(--text-secondary)}.stack-note{margin-top:12px;font-size:13px;color:var(--text-muted)}@media(max-width:500px){.stack-visual{flex-direction:column}.stack-item{padding:6px 10px;font-size:11px}}@supports (padding: env(safe-area-inset-top)){.sidebar{padding-top:env(safe-area-inset-top)}.content{padding-left:max(20px,env(safe-area-inset-left));padding-right:max(20px,env(safe-area-inset-right));padding-bottom:max(60px,env(safe-area-inset-bottom))}}.coord-grid-diagram{margin:16px 0}.coord-grid{position:relative;width:180px;height:180px;background:var(--bg-tertiary);border:2px solid var(--border);border-radius:8px;margin:0 auto 12px}.coord-origin{position:absolute;top:4px;left:8px;font-family:var(--font-mono);font-size:12px;color:var(--accent);font-weight:600}.coord-x-label{position:absolute;top:8px;right:8px;font-size:11px;color:var(--text-secondary)}.coord-y-label{position:absolute;bottom:8px;left:8px;font-size:11px;color:var(--text-secondary);writing-mode:vertical-rl;transform:rotate(180deg)}.coord-arrow-right{position:absolute;top:24px;left:45px;width:100px;height:2px;background:var(--text-secondary)}.coord-arrow-right:after{content:"";position:absolute;right:0;top:-4px;border:5px solid transparent;border-left-color:var(--text-secondary)}.coord-arrow-down{position:absolute;top:35px;left:24px;width:2px;height:100px;background:var(--text-secondary)}.coord-arrow-down:after{content:"";position:absolute;bottom:0;left:-4px;border:5px solid transparent;border-top-color:var(--text-secondary)}.coord-center-dot{position:absolute;top:50%;left:50%;width:10px;height:10px;background:var(--accent);border-radius:50%;transform:translate(-50%,-50%)}.coord-center-label{position:absolute;top:calc(50% + 10px);left:calc(50% + 10px);font-family:var(--font-mono);font-size:11px;color:var(--accent)}.coord-corner{position:absolute;bottom:4px;right:8px;font-family:var(--font-mono);font-size:11px;color:var(--text-muted)}.coord-note{text-align:center;font-size:13px;color:var(--text-secondary);margin:0}.warning-box{background:#f5c4691a;border:1px solid var(--warning);border-radius:10px;padding:20px;margin:24px 0}.warning-header{color:var(--warning);font-weight:600;font-size:15px;margin-bottom:12px}.warning-content p{margin-bottom:16px;color:var(--text-secondary)}.comparison-grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:600px){.comparison-grid{grid-template-columns:1fr}}.comparison-wrong,.comparison-right{padding:12px;border-radius:8px}.comparison-wrong{background:#f38ba81a;border:1px solid var(--error)}.comparison-right{background:#7ec6991a;border:1px solid var(--success)}.comparison-label{font-size:12px;font-weight:600;margin-bottom:8px;text-transform:uppercase;letter-spacing:.5px}.comparison-wrong .comparison-label{color:var(--error)}.comparison-right .comparison-label{color:var(--success)}.comparison-result{font-size:12px;color:var(--text-muted);margin-top:8px;margin-bottom:0;font-style:italic}.operators-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:16px}@media(max-width:600px){.operators-grid{grid-template-columns:1fr}}.operator-group{background:var(--bg-tertiary);padding:12px;border-radius:8px}.operator-group-title{font-weight:600;font-size:12px;text-transform:uppercase;letter-spacing:.5px;color:var(--accent);margin-bottom:8px}.operator-item{font-size:13px;color:var(--text-secondary);padding:2px 0}.operator-item code{color:var(--text-primary);margin-right:6px}.glossary-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px}@media(max-width:700px){.glossary-grid{grid-template-columns:1fr}}.glossary-item{background:var(--bg-tertiary);padding:16px;border-radius:10px;border:1px solid var(--border-subtle)}.glossary-term{font-weight:600;color:var(--accent);margin-bottom:6px;font-size:15px}.glossary-def{font-size:14px;color:var(--text-secondary);line-height:1.5}.glossary-def code{font-size:12px}.section-nav-mobile{display:none;justify-content:space-between;align-items:center;padding:16px 0;margin-top:32px;border-top:1px solid var(--border-subtle)}@media(max-width:800px){.section-nav-mobile{display:flex}}.section-nav-link{display:flex;align-items:center;gap:8px;padding:12px 16px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;color:var(--text-secondary);text-decoration:none;font-size:14px;min-height:44px;transition:all .2s}.section-nav-link:hover{background:var(--bg-elevated);color:var(--text-primary);border-color:var(--accent)}.section-nav-link.prev:before{content:"←"}.section-nav-link.next:after{content:"→"}.section-nav-spacer{flex:1}@media print{body *{visibility:hidden}#reference,#reference *{visibility:visible}#reference{position:absolute;left:0;top:0;width:100%;padding:0;margin:0}.sidebar,.print-btn,.docs-footer,.coming-soon,#reference>p{display:none!important}:root{--text-primary: #000;--text-secondary: #333;--accent: #333;--border-subtle: #ccc;--code-bg: #f5f5f5}body{font-size:6pt;line-height:1.15;color:#000;background:#fff}.content{margin:0;padding:0;max-width:100%}#reference h2{font-size:14pt;font-weight:700;text-align:center;margin:0 0 6pt;padding:0 0 4pt;border-top:none;border-bottom:2pt solid #000;column-span:all}#reference h2:before{display:none}.ref-core{column-count:3;column-gap:14pt;margin-bottom:8pt;padding-bottom:6pt;border-bottom:1pt solid #999}.ref-extended{column-count:3;column-gap:14pt;break-before:page;padding-top:8pt}.ref-extended:before{content:"Extended Reference";display:block;font-size:10pt;font-weight:700;text-align:center;margin-bottom:6pt;column-span:all}#reference h3{font-size:7.5pt;font-weight:700;margin:5pt 0 2pt;padding:0 0 1pt;border-bottom:.5pt solid #666;color:#000;break-after:avoid}.ref-core h3:first-child,.ref-extended h3:first-child{margin-top:0}#reference ul{display:block;margin:0 0 4pt;padding:0;list-style:none}#reference li{font-size:6pt;line-height:1.25;margin:0 0 1pt;padding:0;break-inside:avoid}#reference code{font-family:Courier New,Courier,monospace;font-size:5.5pt;background:#eee;padding:0 2pt;border:none;border-radius:1pt;color:#000}#reference h3{break-after:avoid;page-break-after:avoid}#reference ul{break-before:avoid;page-break-before:avoid}@page{size:letter;margin:.4in}@page :first{margin-top:.3in}}@media screen{.print-btn{display:inline-flex}}.light-theme{--bg-primary: #faf9f7;--bg-secondary: #f0eeeb;--bg-tertiary: #e8e6e3;--bg-elevated: #ffffff;--text-primary: #2d2a26;--text-secondary: #5c574f;--text-muted: #8c857a;--accent: #e17055;--accent-hover: #c85a42;--accent-glow: rgba(225, 112, 85, .15);--accent-secondary: #d35400;--border: #d5d2cd;--border-subtle: #e5e2dd;--code-bg: #f5f3f0}.light-theme .sidebar{background:var(--bg-secondary)}.light-theme .sidebar:before{background:linear-gradient(180deg,rgba(225,112,85,.05) 0%,transparent 100%)}.light-theme .mini-canvas{box-shadow:0 2px 12px #00000014}.light-theme .cm-editor{background:var(--bg-primary)}.light-theme .cm-gutters{background:var(--bg-secondary)}.light-theme code{background:var(--code-bg);color:var(--accent)}.light-theme pre.code-snippet{background:var(--code-bg);border-color:var(--border)}.theme-toggle{position:fixed;top:16px;right:16px;z-index:1000;padding:8px 14px;background:var(--bg-tertiary);border:1px solid var(--border);border-radius:6px;color:var(--text-secondary);font-size:13px;cursor:pointer;transition:all .15s ease}.theme-toggle:hover{background:var(--bg-elevated);border-color:var(--accent);color:var(--accent)}@media(max-width:768px){.theme-toggle{top:16px;right:60px;bottom:auto;padding:6px 10px;font-size:12px}}.orientation-box{background:var(--bg-tertiary);border:2px solid var(--accent);border-radius:12px;padding:20px;margin:20px 0}.orientation-header{font-family:var(--font-display);font-size:1.1rem;font-weight:600;color:var(--accent);margin-bottom:16px}.orientation-content{display:flex;flex-direction:column;gap:10px}.orientation-item{display:flex;align-items:flex-start;gap:12px}.orientation-num{display:flex;align-items:center;justify-content:center;width:24px;height:24px;background:var(--accent);color:var(--bg-primary);border-radius:50%;font-weight:600;font-size:13px;flex-shrink:0}.orientation-text{font-size:14px;line-height:1.5;color:var(--text-secondary)}.orientation-text strong{color:var(--text-primary)}.orientation-tip{margin-top:16px;padding-top:12px;border-top:1px solid var(--border);font-size:13px;color:var(--text-muted)}.orientation-tip strong{color:var(--text-secondary)}@media(max-width:500px){.orientation-box{padding:16px}.orientation-item{gap:10px}.orientation-num{width:22px;height:22px;font-size:12px}.orientation-text{font-size:13px}}.hello-world-box{background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--bg-elevated) 100%);border:1px solid var(--border);border-radius:12px;padding:24px;margin:24px 0 32px}.hello-world-header{display:flex;align-items:center;gap:12px;margin-bottom:16px}.hello-world-header h3{margin:0;font-family:var(--font-display);font-size:1.3rem;color:var(--text-primary)}.hello-world-explain{background:var(--bg-secondary);border-radius:8px;padding:12px 16px;margin:16px 0;color:var(--text-secondary);font-size:.95rem;line-height:1.6}.try-this{color:var(--accent);font-weight:500;font-size:.95rem}.hero-header{display:flex;align-items:center;gap:12px;margin-bottom:12px;flex-wrap:wrap}.hero-header .hero-prompt{margin:0}.difficulty-badge{display:inline-block;padding:3px 10px;border-radius:12px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.5px;vertical-align:middle;margin-right:8px}.difficulty-badge.easy{background:#7ec69933;color:var(--success);border:1px solid rgba(126,198,153,.3)}.difficulty-badge.medium{background:#f5c46933;color:var(--warning);border:1px solid rgba(245,196,105,.3)}.difficulty-badge.advanced{background:#f59e6b33;color:var(--accent);border:1px solid rgba(245,158,107,.3)}h2 .difficulty-badge{font-size:10px;padding:2px 8px;position:relative;top:-2px}.param-diagram{background:var(--bg-secondary);border:1px solid var(--border);border-radius:8px;padding:16px;margin:16px 0}.param-diagram-title{font-size:12px;font-weight:600;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:12px}.param-code{font-family:var(--font-mono);font-size:16px;color:var(--text-primary);margin-bottom:16px;text-align:center}.param-x{color:#7ec699;font-weight:600}.param-y{color:#7aa2f7;font-weight:600}.param-size{color:#f5c469;font-weight:600}.param-labels{display:flex;flex-direction:column;gap:8px}.param-label{display:flex;align-items:center;gap:8px;font-size:13px;color:var(--text-secondary)}.param-label-x:before{content:"";display:inline-block;width:12px;height:12px;background:#7ec699;border-radius:3px}.param-label-y:before{content:"";display:inline-block;width:12px;height:12px;background:#7aa2f7;border-radius:3px}.param-label-size:before{content:"";display:inline-block;width:12px;height:12px;background:#f5c469;border-radius:3px}.light-theme .hello-world-box{background:linear-gradient(135deg,var(--bg-tertiary) 0%,var(--bg-elevated) 100%)}.light-theme .hello-world-explain,.light-theme .param-diagram{background:var(--bg-tertiary)}.light-theme .difficulty-badge.easy{background:#27ae6026;color:#27ae60;border-color:#27ae604d}.light-theme .difficulty-badge.medium{background:#d6891026;color:#d68910;border-color:#d689104d}.light-theme .difficulty-badge.advanced{background:#d3540026;color:#d35400;border-color:#d354004d}.decision-tree{background:var(--bg-tertiary);border-radius:8px;padding:16px;margin-top:16px}.decision-tree-title{font-weight:600;color:var(--text-primary);margin-bottom:12px}.decision-tree-content{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:600px){.decision-tree-content{grid-template-columns:1fr}}.decision-option{background:var(--bg-secondary);padding:12px;border-radius:6px}.decision-label{font-weight:500;color:var(--text-primary);margin-bottom:8px}.decision-label code{color:var(--accent)}.decision-box{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:10px;padding:20px;margin:20px 0}.decision-box-header{font-weight:600;font-size:15px;color:var(--accent);margin-bottom:16px}.decision-box-content{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media(max-width:600px){.decision-box-content{grid-template-columns:1fr}}.decision-box .decision-option{background:var(--bg-secondary);padding:14px;border-radius:8px}.decision-box .decision-option strong{display:block;margin-bottom:8px;color:var(--text-primary);font-size:14px}.decision-box .decision-option .simple-list{margin-bottom:10px}.decision-box .decision-option .simple-list li{font-size:13px;padding:4px 0 4px 20px}.decision-box .decision-option .simple-list li:before{width:6px;height:6px;top:9px}.decision-example{display:block;background:var(--bg-tertiary);padding:8px 12px;border-radius:6px;font-size:13px;color:var(--accent)}.decision-tip{grid-column:1 / -1;text-align:center;color:var(--text-muted);font-size:13px;font-style:italic;margin:8px 0 0}.sin-wave-diagram{background:var(--bg-tertiary);border-radius:8px;padding:16px;margin:12px 0}.sin-wave-title{font-weight:500;color:var(--text-primary);margin-bottom:12px;font-size:13px}.sin-wave-visual{display:flex;align-items:center;gap:8px}.sin-wave-labels{display:flex;flex-direction:column;justify-content:space-between;height:60px;font-size:11px;color:var(--text-tertiary);font-family:var(--font-mono)}.sin-wave-line{flex:1;height:60px}.sin-wave-line svg{width:100%;height:100%}.sin-wave-time{font-size:11px;color:var(--text-tertiary);text-align:center;margin-top:4px}.sin-wave-note{font-size:12px;color:var(--text-secondary);margin-top:8px}.motion-comparison{display:flex;flex-direction:column;gap:8px}.motion-compare-item{display:flex;flex-wrap:wrap;gap:8px;align-items:center}.motion-compare-item code{background:var(--bg-tertiary);padding:4px 8px;border-radius:4px;font-size:12px}.motion-desc{color:var(--text-secondary);font-size:13px}.scope-execution-flow{margin-top:16px;padding-top:16px;border-top:1px solid var(--border)}.scope-flow-title{font-weight:500;color:var(--text-primary);margin-bottom:12px;font-size:14px}.scope-flow-wrong,.scope-flow-right{margin-bottom:16px}.scope-flow-label{font-weight:500;font-size:13px;margin-bottom:8px}.scope-flow-wrong .scope-flow-label{color:#e74c3c}.scope-flow-right .scope-flow-label{color:#27ae60}.scope-flow-steps{padding-left:16px;border-left:2px solid var(--border)}.scope-step{font-size:12px;color:var(--text-secondary);padding:4px 0;font-family:var(--font-mono)}.scope-step em{color:#e74c3c;font-style:normal;font-weight:500}.scope-step.result{color:var(--text-primary);font-weight:500;margin-top:4px}.scope-flow-wrong .scope-step.result{color:#e74c3c}.scope-flow-right .scope-step.result{color:#27ae60}.console-info-box{background:var(--bg-tertiary);border-radius:8px;padding:16px;margin:12px 0;border-left:3px solid var(--accent)}.console-info-header{font-weight:600;color:var(--text-primary);margin-bottom:8px}.console-info-content p{margin:0 0 8px;font-size:14px}.color-swatches{display:flex;flex-direction:column;gap:8px;margin:16px 0}.color-swatch-row{display:flex;flex-wrap:wrap;gap:8px}.color-swatch{width:60px;height:40px;border-radius:6px;display:flex;align-items:center;justify-content:center;box-shadow:0 2px 4px #0003}.color-swatch span{font-size:10px;font-weight:500;color:#fff;text-shadow:0 1px 2px rgba(0,0,0,.5)}@media(max-width:500px){.color-swatch{width:50px;height:35px}.color-swatch span{font-size:9px}}.keyboard-shortcuts{background:var(--bg-tertiary);border-radius:6px;padding:12px;margin-top:12px}.shortcuts-title{font-weight:500;color:var(--text-primary);margin-bottom:8px;font-size:13px}.shortcut-item{display:flex;align-items:center;gap:8px;padding:4px 0;font-size:13px}.shortcut-item kbd{background:var(--bg-secondary);border:1px solid var(--border);border-radius:4px;padding:2px 6px;font-family:var(--font-mono);font-size:11px;color:var(--text-primary)}.shortcut-item span{color:var(--text-secondary)}.param-flow{display:flex;flex-direction:column;gap:8px;margin-top:12px}.param-flow-item{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px}.param-flow-item code{background:var(--bg-tertiary);padding:4px 8px;border-radius:4px;font-size:12px}.param-arrow-right{color:var(--accent);font-weight:700}.param-flow-item span:last-child{color:var(--text-secondary)}.array-index-visual{background:var(--bg-tertiary);border-radius:12px;padding:16px;margin:16px 0}.array-visual-header{font-family:var(--font-mono);font-size:14px;color:var(--text-secondary);margin-bottom:12px}.array-visual-items{display:flex;gap:12px;flex-wrap:wrap}.array-visual-item{display:flex;flex-direction:column;align-items:center;gap:6px}.array-visual-value{padding:8px 16px;border-radius:6px;color:#fff;font-weight:500;font-size:14px}.array-visual-index{font-family:var(--font-mono);font-size:12px;color:var(--text-muted)}.function-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:12px;margin:16px 0}.function-card{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:8px;padding:12px 14px;display:flex;flex-direction:column;gap:4px}.function-card code{font-family:var(--font-mono);font-size:13px;color:var(--accent)}.function-card span{font-size:13px;color:var(--text-secondary)}.function-card span code{font-size:12px;color:var(--text-muted);background:var(--bg-secondary);padding:2px 5px;border-radius:4px}@media(max-width:500px){.function-grid{grid-template-columns:1fr}.array-visual-items{justify-content:center}}@media(max-width:900px)and (orientation:landscape){.mini-playground{grid-template-columns:1fr 200px;max-height:60vh}.mini-editor{min-height:100px;max-height:150px}.mini-canvas{width:160px!important;height:160px!important}.mini-console{max-height:80px}.sidebar-header{padding:12px 16px}.content{padding:16px}section{padding:16px 0}.virtual-keyboard{max-height:35vh}}@media(max-width:500px)and (orientation:portrait){.mini-editor{min-height:140px;max-height:200px}.mini-canvas{width:180px!important;height:180px!important}.virtual-keyboard{max-height:45vh}}@supports (padding: env(safe-area-inset-bottom)){.virtual-keyboard{padding-bottom:env(safe-area-inset-bottom)}.sidebar{padding-left:env(safe-area-inset-left)}.content{padding-right:env(safe-area-inset-right)}.vk-toggle-btn{bottom:calc(20px + env(safe-area-inset-bottom));right:calc(20px + env(safe-area-inset-right))}.theme-toggle{top:calc(16px + env(safe-area-inset-top));right:calc(60px + env(safe-area-inset-right))}}