:root{--bg:#fff;--text:#333;--muted:#666;--line:#e5e5e5;--dark:#f7f7f7;--blue:#2a6cb6;--teal:#1a7a5a;--purple:#6b46a8;--amber:#8a5a10;--red:#a04020;--green:#1a7a5a}*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--text);font:16px/1.8 'Source Serif 4',Georgia,serif;-webkit-text-size-adjust:100%}a{color:var(--blue);text-underline-offset:3px}button,input,output{font:13px/1.6 Inter,Arial,sans-serif}button{cursor:pointer}button,input[type=search]{border:1px solid var(--line);padding:10px 14px;background:#fff;color:var(--text)}:focus-visible{outline:3px solid var(--blue);outline-offset:4px}[hidden]{display:none!important}.skip-link{position:fixed;top:8px;left:8px;z-index:30;transform:translateY(-200%);background:#1a1a1a;color:#fff;padding:10px 16px}.skip-link:focus{transform:none}.layout{display:flex;max-width:1060px;margin:0 auto;padding:56px 32px 56px 0;min-height:100vh}.layout>nav{width:150px;min-width:150px;flex:0 0 150px;padding:0 36px 0 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8px;overflow-wrap:normal}th{font-weight:600;background:#fafafa}td:not(:first-child){font-variant-numeric:tabular-nums}caption{text-align:left;margin-bottom:8px;color:var(--muted)}.flow-cards{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;list-style:none;padding:0;margin:0}.flow-cards li{padding:14px;border:1px solid var(--line);border-left:3px solid #bbb;line-height:1.7;color:var(--muted)}.flow-cards li.active{border-left-color:var(--blue);background:#f6f9fd;color:#333}.flow-cards strong{display:block;font-weight:600;margin-bottom:5px;color:#333}.flow-cards li.done{border-left-color:var(--teal)}.formula{padding:16px 20px;background:#fafafa;border:1px solid var(--line);font:14px/1.8 Inter,Arial,sans-serif;margin:18px 0}.overview{display:flex;gap:30px;border-block:1px solid var(--line);padding:18px 0;font-size:12px;color:var(--muted);margin-top:28px}.overview strong{display:block;font:400 26px/1.4 'Source Serif 4',Georgia,serif;color:#333}.search label{font-size:13px}.search input{display:block;width:100%;margin:8px 0 12px}.search p{font-size:12px;color:var(--muted)}.module-list{padding:0;list-style:none;margin:0;border-top:1px solid var(--line)}.module-item{border-bottom:1px solid var(--line)}.module-item a{display:flex;align-items:flex-start;gap:16px;padding:20px 0;color:#333;text-decoration:none}.module-item a:hover strong{color:var(--blue)}.module-item strong{display:block;font-size:14px;line-height:1.6;font-weight:500}.module-number{flex:0 0 28px;width:28px;height:28px;font:12px/28px Inter,sans-serif;background:#f3f6fa;color:var(--blue);text-align:center}.module-desc{display:block;font-size:12px;color:var(--muted);line-height:1.8;margin-top:6px}.module-item a>span:last-child{margin-left:auto;color:var(--blue)}.module-item.read .module-number{background:#eaf5ef;color:var(--teal)}.toggle-grid{grid-column:1/-1;display:flex;gap:8px;flex-wrap:wrap}.toggle-grid 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@media(max-width:768px){.layout{display:block;padding:24px 20px 40px}.layout>nav{position:static;width:auto;min-width:0;display:flex;flex-wrap:wrap;gap:4px 16px;padding:0 0 20px;text-align:left}.layout>nav a{font-size:12px}.nav-sep{display:none}main{padding:28px 0 0;max-width:none}.divider{height:1px;width:100%}h1{font-size:25px}.sim-controls{grid-template-columns:1fr}.sim-output{padding:14px}.flow-cards{grid-template-columns:1fr}.out-val{font-size:20px}.reading{padding:18px}.mod-nav{gap:18px}.overview{gap:24px}.module-item a{gap:12px}}
@media(prefers-reduced-motion:reduce){*{scroll-behavior:auto!important;transition:none!important}}
@media print{.layout{display:block;padding:0}.layout>nav,.divider,.skip-link,.completion,.mod-nav,.search{display:none}main{max-width:none;padding:0}.chart svg{min-width:0}.chart-scroll{overflow:visible}.chart-hint{display:none}.sim-box{break-inside:avoid}body{font-size:12px}}