:root{--accent-color: #257a57;--accent-color-dark: #155239;--accent-color-light: #e7f5ee;--accent-color-soft: #f2faf6;--surface-color: #fffdfa;--surface-elevated: #ffffff;--surface-muted: #f6f1e8;--page-bg: #fbf7ef;--text-color: #17211d;--text-muted: #5d6b63;--border-color: #ded6c8;--border-color-strong: #c8bda9;--shadow-color: rgba(43, 36, 22, .08);--shadow-elevated: 0 18px 45px rgba(43, 36, 22, .1);--callout-bg-color: #e7f5ee;--callout-border-color: var(--accent-color);--challenge-bg-color: #fff4d6;--challenge-border-color: #d59f0f;--button-bg-color: var(--accent-color);--button-hover-bg-color: var(--accent-color-dark);--cancel-color: #c83737;--cancel-hover-color: #9f2626;--focus-ring: rgba(37, 122, 87, .28);--radius-sm: 8px;--radius-md: 12px;--radius-lg: 18px;--playground-button-height: 40px;--editor-header-height: 84px;--body-font: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--heading-font: Charter, "Bitstream Charter", "Iowan Old 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rgba(222,214,200,.82);border-radius:var(--radius-lg);box-shadow:0 10px 30px #2b24160f;backdrop-filter:blur(14px);padding:10px 12px}.header-title{position:absolute;left:50%;transform:translate(-50%);font-weight:700}.header-title-content{display:inline-flex;align-items:center;gap:8px}.header-title-text{white-space:nowrap}#header-spinner-root{display:flex;align-items:center;justify-content:center;margin-left:auto;margin-right:12px;min-width:20px;min-height:20px}#header-spinner-root:empty{margin-right:0;min-width:0;min-height:0}.header-search-button{background:none;border:none;padding:4px;border-radius:9999px;color:inherit;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:background-color .2s ease}.header-search-button svg{width:16px;height:16px;display:block}.header-search-button:hover:not(:disabled),.header-search-button:focus-visible{background-color:var(--accent-color-light);outline:none}.header-search-button:focus-visible{box-shadow:0 0 0 3px 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var(--border-color);padding-top:18px;font-size:.9em;color:var(--text-muted);display:flex;justify-content:space-between;align-items:center}footer .footer-left{text-align:left}@media(max-width:768px){h1{font-size:1.8rem}h2{font-size:1.5rem}}@media(max-width:480px){.example-card{min-width:130px;padding:12px}.example-card h4{font-size:1rem}.example-card p{font-size:.8rem}}@media(max-width:480px){footer{flex-direction:column;text-align:center}footer .footer-left{margin-bottom:10px}}.chapter-nav{display:flex;justify-content:space-between;margin:20px 0;padding:10px 0}.chapter-nav-top{border-bottom:1px solid var(--border-color);margin-bottom:30px}.chapter-nav-bottom{margin-top:30px}body.editor-expanded .chapter-nav-bottom{display:none}.chapter-nav-button{background-color:var(--button-bg-color);color:#fff;padding:7px 12px;border:1px solid rgba(21,82,57,.68);border-radius:999px;cursor:pointer;text-decoration:none;font-size:.85rem;transition:background-color .2s,box-shadow 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.card-title{font-size:1.2rem;margin-bottom:5px}.example-mini-card .card-description{font-size:.9rem;margin-bottom:5px}.example-detail-card code{background-color:var(--surface-muted);padding:2px 4px;border-radius:3px;font-size:1em}.callout{margin-top:20px;padding:18px;background-color:var(--callout-bg-color);border:1px solid rgba(37,122,87,.22);border-left:5px solid var(--callout-border-color);border-radius:var(--radius-md)}blockquote{margin:1em 0;padding:.85em 1.1em;background-color:var(--surface-muted);border-left:4px solid var(--border-color-strong);border-radius:var(--radius-md);color:var(--text-color)}.noscript-warning{margin:10px 0;padding:10px;background-color:#ffebeb;border-left:4px solid var(--cancel-color)}.intro{margin-bottom:15px;padding:clamp(1.25rem,3vw,2rem);background:linear-gradient(135deg,#ffffffe6,#f2faf6e6),var(--surface-elevated);border:1px solid var(--border-color);border-radius:var(--radius-lg);box-shadow:0 12px 34px var(--shadow-color)}.intro p{max-width:72ch;color:var(--text-muted);font-size:1.08rem}.toggle-info-link{margin-top:10px;display:inline-block}.toggle-chapters{margin:10px 0}.home-layout{display:flex;flex-direction:column;gap:1.25rem}.home-intro,.home-main-column,.home-chapters-column{display:flex;flex-direction:column;gap:1rem}.home-chapters-column{gap:.75rem}.home-layout .card{margin:0;padding:18px}.home-chapters,.home-entrypoints{display:grid;gap:.75rem;grid-template-columns:1fr}.home-featured{display:grid;gap:1rem;grid-template-columns:1fr}@media(min-width:1024px){.home-layout--wide{display:grid;grid-template-columns:minmax(360px,3fr) minmax(280px,2fr);grid-template-areas:"intro intro" "chapters main";align-items:start;gap:1.5rem}.home-layout--wide .home-intro{grid-area:intro}.home-layout--wide .home-chapters-column{grid-area:chapters;position:sticky;top:1rem}.home-layout--wide .home-main-column{grid-area:main}.home-layout--wide .home-chapters,.home-layout--wide 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var(--accent-color)}.search-container{margin:20px 0;position:sticky;top:0;background-color:var(--surface-elevated);padding:10px 0;z-index:100;border-bottom:1px solid var(--border-color)}.search-input{width:100%;padding:10px;font-size:1rem;border:1px solid var(--border-color);border-radius:var(--radius-sm);box-sizing:border-box;margin-bottom:1rem}.search-input:focus{outline:none;border-color:var(--accent-color);box-shadow:0 0 0 2px #00968833}.highlight{background-color:#ffeb3b;padding:2px 0}.tag-cloud{margin-bottom:1rem}.tag-cloud .tag,.example-tags .tag{display:inline-block;background-color:var(--surface-muted);border:1px solid var(--border-color);border-radius:16px;padding:2px 8px;margin:2px;font-size:.8rem;text-decoration:none}.tag-cloud .tag{cursor:pointer}.tag-cloud .tag.selected{background-color:var(--accent-color);border-color:var(--accent-color);color:#fff}.tag-cloud .tag.hidden{display:none}details{margin-bottom:20px}details summary{list-style:none;transition:margin .3s ease}details summary::-webkit-details-marker{display:none}details summary:before{content:"\25b6";display:inline-block;margin-right:10px;transition:transform .3s ease}details[open] summary:before{transform:rotate(90deg)}details[open] summary{margin-bottom:10px}.simpy-playground{margin-top:20px}.simpy-playground .section{margin-bottom:30px;padding:20px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:var(--surface-elevated)}.simpy-playground h2{margin-top:0;margin-bottom:15px;color:var(--text-color);font-size:1.5rem}.sim-params-form{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:15px}.param-group{margin-bottom:15px}.param-group label{display:block;margin-bottom:5px;font-weight:500}.param-group input{width:100%;padding:8px;border:1px solid var(--border-color);border-radius:var(--radius-sm);font-size:1rem}#sim-code-editor{width:100%;font-family:var(--mono-font);padding:10px;border:1px solid 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.progress-label{font-size:.9em;margin-bottom:3px}.progress-range{width:100%;height:12px;background-color:var(--accent-color-light);border:1px solid var(--border-color);border-radius:6px;overflow:hidden;-webkit-appearance:none;appearance:none;cursor:pointer;background-image:linear-gradient(to right,#4dd0e1,var(--accent-color));background-size:var(--progress) 100%;background-repeat:no-repeat}.progress-range::-webkit-slider-runnable-track{width:100%;height:100%;background:transparent;border:none}.progress-range::-moz-range-track{width:100%;height:100%;background:transparent;border:none}.progress-range::-webkit-slider-thumb{-webkit-appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent-color);border:2px solid #fff;box-shadow:0 0 2px #00000080;position:relative;top:50%;transform:translateY(-50%)}.progress-range::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:var(--accent-color);border:2px solid #fff;box-shadow:0 0 2px #00000080}.log-output{margin-top:15px;max-height:200px;overflow-y:auto;padding:10px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:var(--surface-elevated);font-family:var(--mono-font);font-size:.9rem;color:var(--text-color)}.simpy-playground.expanded .log-output{color:var(--text-color);min-height:120px;max-height:none;margin-bottom:15px}.log-entry{background-color:var(--surface-elevated);border-left:4px solid transparent;margin-bottom:5px;padding:5px;border-radius:3px}.log-entry.info{border-left-color:var(--accent-color-dark);color:var(--accent-color-dark)}.log-entry.probe{border-left-color:#33691e;color:#33691e}.log-entry.success{border-left-color:#1b5e20;color:#1b5e20}.log-entry.error{border-left-color:#b71c1c;color:#b71c1c}.results-panel{margin-top:20px;padding:15px;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:var(--surface-elevated)}.results-panel h3{margin-top:0;margin-bottom:10px;color:var(--text-color)}.results-table{width:100%;border-collapse:collapse}.results-table th,.results-table td{padding:8px;text-align:left;border-bottom:1px solid var(--border-color)}.results-table th{font-weight:600;background-color:var(--surface-muted)}.results-table tr:last-child td{border-bottom:none}.intro-table{width:100%;border-collapse:collapse;border:1px solid var(--border-color);margin-top:1rem}.intro-table th,.intro-table td{padding:12px;text-align:left;border:1px solid var(--border-color)}.intro-table th{background-color:var(--surface-muted);font-weight:600}.json-pretty{white-space:pre-wrap;font-family:var(--mono-font);background-color:var(--surface-elevated);padding:4px;border-radius:3px;margin:0}.chart-stats-table{width:100%;border-collapse:collapse;margin-top:1rem}.chart-stats-table th,.chart-stats-table td{padding:4px 8px;text-align:left;border-bottom:1px solid var(--border-color)}.chart-stats-table th{background-color:var(--surface-muted);font-weight:600}.chart-stats-table tr:last-child td{border-bottom:none}.output-tabs{display:flex;gap:8px;margin-left:auto}.output-tabs button{padding:0 12px;font-size:.9rem;border:1px solid var(--accent-color-dark);background-color:var(--surface-muted);border-radius:var(--radius-sm);cursor:pointer;transition:background-color .2s}.output-tabs button:hover{background-color:var(--accent-color-light)}.output-tabs button.active{background-color:var(--button-bg-color);color:#fff}.run-history-select{display:flex;align-items:center;gap:6px}.run-history-select select{padding:4px 8px;font-size:.9rem}.comparison-select{display:flex;align-items:center;gap:6px;margin-bottom:1rem}.comparison-select select{padding:4px 8px;font-size:.9rem}.section-chip{display:inline-block;padding:4px 12px;margin-bottom:15px;border-radius:16px;background-color:var(--surface-muted);color:var(--text-color);font-size:.9rem;font-weight:500;letter-spacing:.5px}.autosave-chip{background-color:#e0f7fa;color:#0277bd}.playground-textarea{width:100%;font-family:var(--mono-font);padding:0;border:1px solid var(--border-color);border-radius:var(--radius-sm);background-color:var(--surface-elevated);font-size:.9rem;line-height:1.4;resize:vertical;box-sizing:border-box}.example-selector-container{position:relative;margin-bottom:20px}.example-selector{display:flex;overflow-x:auto;gap:15px;padding:10px 5px;scrollbar-width:thin}.example-card{flex:0 0 auto;border:1px solid var(--border-color);border-radius:var(--radius-sm);padding:15px;background-color:var(--surface-elevated);cursor:pointer;transition:all .2s ease;box-shadow:0 2px 4px #0000000d;min-width:150px;max-width:200px}.example-card:hover{transform:translateY(-2px);box-shadow:0 4px 8px #0000001a}.example-card.selected{border-color:var(--accent-color);background-color:#e6f2ff}.example-card h4{margin:0 0 5px;font-size:1.1rem;color:var(--text-color)}.example-card p{margin:0;font-size:.9rem;color:var(--text-muted)}.code-section-header{display:flex;align-items:center;margin-bottom:10px;gap:10px}.code-section-header .section-chip{margin-bottom:0}.code-section-header .section-info{font-size:14px;color:var(--text-muted);flex:1}.fork-button,.cheatsheet-button{margin-left:10px;padding:0 12px;background-color:var(--button-bg-color);border:1px solid var(--accent-color-dark);border-radius:var(--radius-sm);font-size:.9rem;color:#fff;cursor:pointer;transition:background-color .2s;align-self:center}.cheatsheet-button:hover{background-color:var(--button-hover-bg-color)}.cheatsheet-button:focus{outline:2px solid var(--accent-color)}.fork-button:hover{background-color:var(--button-hover-bg-color)}.fork-button:focus{outline:2px solid var(--accent-color)}.simpy-playground.expanded 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