:root{font:16px/1.5 system-ui,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:#172f46;background:#edf2f7;--blue:#155ba5;--line:#d8e1ea}*{box-sizing:border-box}body{margin:0}header{max-width:1180px;margin:32px auto 24px;display:flex;gap:18px;align-items:center;padding:0 24px}.brand-icon{background:#173450;color:#74c2ff;width:58px;height:58px;border-radius:16px;font-size:27px;letter-spacing:-12px;padding-left:8px;display:grid;align-items:center}.eyebrow{font-size:.75rem;font-weight:750;letter-spacing:.14em;color:#60748a}h1{font-size:clamp(1.3rem,3vw,1.9rem);margin:2px 0;font-weight:750;letter-spacing:-.04em}main{max-width:1132px;margin:auto;padding:0 24px}.workspace,.explore{background:white;border:1px solid var(--line);border-radius:18px;box-shadow:0 7px 25px #19345106;overflow:hidden}.toolbar{display:flex;align-items:center;gap:24px;padding:20px 26px;border-bottom:1px solid var(--line);flex-wrap:wrap}.toolbar>.quiet{margin-left:auto}button,select,input,textarea{font:inherit}button{border:1px solid #c4d2df;border-radius:8px;background:white;color:#203d59;padding:10px 16px;cursor:pointer;min-height:44px;font-weight:600}button:hover{background:#edf5fe;border-color:#7ea2c6}button:focus-visible,summary:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,[tabindex]:focus-visible{outline:3px solid #2084d6;outline-offset:3px}.primary{background:var(--blue);color:white;border-color:var(--blue)}.primary:hover{background:#124c8b}.quiet{background:#f4f7fa}.segmented{display:flex;background:#edf2f7;border-radius:10px;padding:4px;gap:3px}.segmented button{border-color:transparent;background:transparent}.segmented button[aria-pressed=true]{background:#173f66;color:white;box-shadow:0 2px 5px #18375520}label{display:flex;gap:8px;align-items:center;font-weight:600}select,input:not([type=checkbox],[type=range]),textarea{border:1px solid #c4d2df;border-radius:7px;background:white;padding:9px 12px;color:#172f46;max-width:100%}select{min-height:44px}input[type=range]{width:100%;accent-color:var(--blue)}input[type=checkbox]{width:22px;height:22px;accent-color:var(--blue)}.title-row{display:flex;align-items:center;gap:16px;margin:24px 30px 0}.title-row input{font-size:1.2rem;font-weight:650;flex:1;min-width:0;border-color:transparent!important;padding-left:0!important}.hint{color:#61758a;font-size:.875rem;font-weight:400}.diagram{padding:12px 24px}.diagram svg{width:100%;height:auto;display:block;touch-action:none}.diagram text{user-select:none}.status{padding:0 30px;margin:0 0 18px;font-size:.875rem;color:#566c80}.status.warning{color:#955200}details{border-top:1px solid var(--line)}summary{list-style:none;cursor:pointer;display:flex;gap:12px;align-items:center;padding:20px 26px;font-size:1.05rem;font-weight:650;min-height:64px}summary::-webkit-details-marker{display:none}summary:before{content:'›';font-size:25px;color:#557590;transition:transform .2s;line-height:1}details[open]>summary:before{transform:rotate(90deg)}.detail-hint{font-size:.875rem;color:#718398;font-weight:400;margin-left:auto}.settings-body,.explore-body{padding:6px 26px 24px}.settings-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(185px,1fr));gap:20px;margin:12px 0 22px}.settings-grid label{display:flex;flex-direction:column;align-items:stretch;font-size:.9rem}.set-card{background:#f5f8fb;padding:16px;border-radius:10px;display:grid;gap:10px}.set-card input[type=color]{width:100%;height:42px;padding:3px}.button-row{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.downloads{padding:20px 26px;border-top:1px solid var(--line)}.separator{height:28px;border-left:1px solid var(--line);margin:0 4px}.downloads .hint{margin-left:auto}.explore{margin-top:20px}.explore-toolbar{display:flex;gap:25px;flex-wrap:wrap;margin:22px 0}.toggle{font-weight:550;gap:10px}.teaching{padding:12px 16px;background:#eff6fd;border-left:3px solid #3983c1;font-size:.95rem}.legend{display:flex;flex-wrap:wrap;gap:16px;margin:16px 0;font-size:.875rem}.legend span{display:flex;align-items:center;gap:6px}.legend i{width:20px;height:20px;border-radius:3px;border:2px solid #173f66}.event-key{background:#bcd5f7}.condition-key{background:repeating-linear-gradient(45deg,#fee5a1 0 4px,#b4780e 4px 5px)}.both-key{background:repeating-linear-gradient(45deg,#b6d7d8 0 4px,#17515b 4px 5px)}.outside-key{background:#edf0f3;border-color:#a4adb5!important}.result{background:#f3f7fb;border-radius:12px;padding:20px;margin-top:20px}.statement{font-family:Cambria,'Times New Roman',serif;font-size:clamp(1.3rem,3vw,1.8rem);line-height:1.5;overflow-wrap:anywhere;margin:8px 0 12px}.result p{margin:8px 0}.result .caption{font-weight:650;color:#536e89;font-size:.875rem}.region-buttons{display:flex;flex-wrap:wrap;gap:6px;margin:8px 0 18px}.region-buttons button{font-size:.875rem;padding:7px 10px;font-weight:500}.region-buttons button[aria-pressed=true]{background:#173f66;color:white}.region-buttons button[aria-pressed=true]:before{content:'✓ ';}footer{text-align:center;color:#738497;font-size:.8rem;padding:22px}dialog{border:1px solid #bacbdc;border-radius:16px;padding:24px;width:min(500px,calc(100% - 32px));color:#172f46}dialog::backdrop{background:#0c253d75}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:10px}.dialog-heading h2{font-size:1.25rem;margin:0 0 16px}.dialog-heading button{border:none;background:transparent;font-size:24px}textarea{width:100%;margin-top:8px;resize:vertical}#entry-error{color:#a33420}#toast{position:fixed;bottom:20px;left:50%;transform:translateX(-50%);background:#173f66;color:white;padding:12px 20px;border-radius:10px;display:none;max-width:90%;z-index:10}[hidden]{display:none!important}@media(max-width:650px){header{margin-top:20px;gap:12px;padding:0 16px}.brand-icon{width:42px;height:48px;flex-shrink:0}main{padding:0 12px}.toolbar{gap:12px;padding:14px}.toolbar label{font-size:.875rem}.toolbar>.quiet{margin-left:0}.title-row{margin:16px 16px 0;display:block}.title-row .hint{display:block}.diagram{padding:10px 4px}.detail-hint{display:none}summary{padding:18px}.settings-body,.explore-body{padding:0 16px 20px}.downloads{padding:16px;gap:8px}.downloads button{font-size:.875rem}.downloads .hint{width:100%;margin:0}.separator{display:none}.settings-grid{grid-template-columns:1fr}.statement{font-size:1.4rem}.explore-toolbar{gap:14px}.segmented button{padding:9px 12px}.button-row button{flex-grow:1}}
@media(max-width:650px){.diagram{overflow-x:auto;overscroll-behavior-x:contain}.diagram svg{width:740px;max-width:none;touch-action:pan-x pan-y}.diagram:after{content:'Scroll the diagram sideways to see all regions.';display:block;position:sticky;left:0;font-size:.8rem;color:#61758a;padding:6px 8px}.title-row .hint{font-size:.875rem}}

/* Shared The Varley Academy home link. */
a.mv-home-link{display:inline-flex;align-items:center;gap:12px;color:#152f40;text-decoration:none;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;font-size:18.4px;font-weight:750;letter-spacing:-.035em;line-height:1.25;max-width:100%;min-width:0;}
a.mv-home-link .mv-home-logo{display:grid;place-items:center;flex:0 0 36px;width:36px;height:36px;background:#152f40;color:#fff;border-radius:10px;font-family:Georgia,serif;font-style:italic;font-size:21.6px;font-weight:400;line-height:1;letter-spacing:0;}
a.mv-home-link .mv-home-label{color:#152f40;min-width:0;}
a.mv-home-link:hover .mv-home-label{text-decoration:underline;text-underline-offset:4px;}
a.mv-home-link:focus-visible{outline:3px solid #176d87;outline-offset:5px;border-radius:4px;}
.mv-tool-label{display:block;margin-top:6px;color:#526775;font:400 14px/1.4 system-ui,sans-serif;}

header{flex-wrap:wrap}header>a.mv-home-link{flex-basis:100%;margin-bottom:6px}