:root{--ink:#203b37;--muted:#5c706a;--paper:#f4f2ea;--accent:#c9e785;--line:#d8ded4}*{box-sizing:border-box}body{margin:0;background:var(--paper);color:var(--ink);font-family:system-ui,sans-serif;line-height:1.55}header{display:flex;align-items:center;gap:24px;justify-content:space-between;padding:22px 5vw;border-bottom:1px solid var(--line)}h1{font-size:32px;letter-spacing:-1.5px;margin:0}.dot{color:#77893f}.eyebrow{font-size:11px;font-weight:700;letter-spacing:2px}h2{font-size:30px;line-height:1.18;letter-spacing:-.8px}h3{margin-top:0}main{max-width:1400px;margin:auto;padding:22px 5vw}.card{background:#fffef9;border:1px solid var(--line);border-radius:18px;padding:25px;margin-bottom:22px}.narrow{max-width:530px;margin:5vh auto}.muted{color:var(--muted);font-size:13px}label{display:block;font-size:14px;font-weight:600;margin:12px 0}input,textarea,select{display:block;width:100%;border:1px solid #bac8be;background:white;border-radius:8px;padding:11px;color:var(--ink);font:inherit;margin-top:6px}textarea{resize:vertical}button{cursor:pointer;background:var(--ink);color:white;border:0;border-radius:9px;padding:12px 18px;font:inherit;font-weight:600}button:hover{background:#385c53}button:disabled{opacity:.5;cursor:wait}.quiet{background:#e7ecdf;color:var(--ink)}.intro{display:flex;align-items:center;justify-content:space-between;gap:12px}.badge{padding:7px 12px;background:#e7ecdf;border-radius:20px;font-size:12px}.columns{display:grid;grid-template-columns:1.7fr 1fr;gap:24px}.row{display:flex;align-items:end;gap:15px;flex-wrap:wrap}.row label{flex:1;min-width:160px}.roster{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}.student{background:white;text-align:left;color:var(--ink);border:1px solid var(--line);border-radius:12px;padding:18px;margin-bottom:20px}.student:hover{background:#edf2e3}.student p{margin:6px 0;font-size:13px}.bubble{white-space:pre-wrap;overflow-wrap:anywhere;background:#f0f3e9;border-radius:12px;padding:14px;margin:12px 0}.bubble.user{background:#e3edee}.bubble small{display:block;color:var(--muted);margin-bottom:5px}.bubble .state{font-size:12px;color:#79542c;margin-top:8px}#messages{max-height:55vh;overflow:auto;min-height:160px}#notice:not(:empty){background:#fff0cf;padding:14px;border-radius:10px}footer{text-align:center;font-size:12px;color:var(--muted);padding:30px}[hidden]{display:none!important}summary{cursor:pointer;font-weight:600}:focus-visible{outline:3px solid #849f43;outline-offset:3px}@media(max-width:760px){.columns{grid-template-columns:1fr}header{flex-wrap:wrap}.intro{align-items:start;flex-direction:column}h2{font-size:25px}}