:root{color-scheme:light;--ink:#193d35;--paper:#f6efdb;--accent:#aa3e2d;--line:#b8b399;font:16px/1.45 system-ui,sans-serif}
*{box-sizing:border-box}
body{margin:0;background:var(--paper);color:var(--ink)}
header,main{max-width:1300px;margin:auto;padding-inline:clamp(18px,4vw,64px)}
header{display:flex;align-items:baseline;justify-content:space-between;padding-block:18px;border-bottom:1px solid var(--line)}
header strong{font:700 27px Georgia,serif}header span,.ribbon,small{font:700 .74rem/1.3 ui-monospace,monospace;text-transform:uppercase;letter-spacing:.11em}
.ribbon{display:flex;justify-content:space-between;padding-block:18px;border-bottom:2px solid var(--ink)}
.workspace{display:grid;grid-template-columns:clamp(185px,25%,300px) 1fr;align-items:center;border-bottom:2px solid var(--ink);min-height:400px}
aside{padding-block:28px;position:relative;z-index:1}
h1{font:normal clamp(2.5rem,5vw,4.6rem)/.97 Georgia,serif;letter-spacing:-.045em;margin:0 0 16px}
#brief{min-height:4.4em;max-width:29ch}
button{background:var(--ink);border:1px solid var(--ink);color:white;padding:10px 16px;font:600 15px/1.2 system-ui;cursor:pointer}
button:hover{background:#345a4b}button:focus-visible{outline:3px solid #d08c24;outline-offset:3px}button:disabled{opacity:.43;cursor:default}
[hidden]{display:none!important}
.dispatch{display:flex;gap:26px;border-top:1px solid var(--line);margin-top:26px;padding-top:14px}
small{display:block;font-size:.66rem}.dispatch b{font:600 26px ui-monospace,monospace}
.tools{display:flex;gap:10px;margin-top:16px}.tools button,.pad button{background:transparent;color:var(--ink);border-color:var(--line);font-size:13px}
canvas{display:block;width:100%;height:clamp(340px,58vh,635px)}
.controls,.pad{display:flex;gap:8px;align-items:center}.controls{padding:18px 0;flex-wrap:wrap}.controls p{font-size:13px;color:#455951}.pad button{touch-action:none;user-select:none;min-width:36px}
@media(max-width:680px){header{padding-block:10px}.workspace{grid-template-columns:1fr}aside{padding:16px 0 0}h1{font-size:2.4rem}#brief{min-height:0;margin:.5em 0;max-width:none}.dispatch{margin-top:12px;padding-top:8px;float:right}.dispatch b{font-size:18px}.tools{margin-top:8px}.ribbon{padding-block:10px}canvas{height:clamp(225px,39vh,320px)}.controls{padding-block:10px}.controls p{margin:0}}
.settings,.study{display:flex;align-items:center;gap:1.2rem;flex-wrap:wrap;padding:.8rem 0;border-top:1px solid var(--line);font-size:.88rem}.study a{color:var(--ink)}select{font:inherit;color:var(--ink);background:#fffaf0;border:1px solid var(--line);padding:5px}.tools{flex-wrap:wrap}.parcel{margin-top:8px;font-size:1.1rem}.parcel small{display:inline;margin-right:1em}#feedback{font-size:15px;min-height:1.4em;color:#753723}.dispatch{float:none}.workspace{grid-template-columns:minmax(0,clamp(185px,25%,300px)) minmax(0,1fr)}#practice-label{display:block;margin:0 0 .8rem}#practice{display:block;max-width:100%;margin:.25rem 0}#brief{min-height:2.8em}
@media(max-width:680px){.workspace{grid-template-columns:1fr}.dispatch{margin:8px 0}aside{padding:12px 0}.settings,.study{gap:.65rem}}

#manifest{white-space:pre-line;font-size:.86rem;line-height:1.4}#demo{background:transparent;color:var(--ink);margin:.3rem 0}#demo-status{display:block;font-size:.85rem}

/* Public demo navigation */
.demo-links{display:flex;gap:18px;font:600 12px system-ui}.demo-links a{color:inherit;text-decoration:underline;text-underline-offset:4px}@media(max-width:650px){header{flex-wrap:wrap;gap:12px}.demo-links{width:100%;justify-content:space-between}}