:root{font-family:Inter,Segoe UI,Arial,sans-serif;color:#172a3a;background:#f3f5f8;font-synthesis:none;--line:#e1e6ed;--accent:#196b59}*{box-sizing:border-box}body{margin:0}header{height:68px;background:#fff;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:30px;padding:0 32px}a{color:var(--accent);text-decoration:none}.brand{font-weight:800;font-size:25px}.brand span{font-size:13px;letter-spacing:2px;margin-left:12px}.label{margin-left:auto;background:#edf5f1;padding:7px 12px;border-radius:20px;font-size:12px;color:#226852}main{max-width:1720px;margin:auto;padding:32px}.heading{display:flex;align-items:center;justify-content:space-between;margin-bottom:22px}h1{font-size:30px;letter-spacing:-.8px;margin:8px 0}h2{font-size:17px;margin:0 0 12px}h3{font-size:15px}p{line-height:1.6;margin:8px 0;color:#617181}.eyebrow{font-size:10px;letter-spacing:1.6px;font-weight:700;color:#728393}.layout{display:grid;grid-template-columns:220px minmax(340px,1fr) 320px;gap:20px;align-items:start}.card{background:#fff;border:1px solid var(--line);border-radius:14px;padding:20px;min-width:0}.section-title{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-bottom:14px}.section-title h2{margin-bottom:0}button{font:inherit;background:var(--accent);color:#fff;border:1px solid transparent;border-radius:8px;padding:11px 17px;cursor:pointer;font-size:13px;font-weight:600}button:hover{filter:brightness(.94)}button:disabled{opacity:.45;cursor:not-allowed}.quiet,.secondary{background:#fff;border-color:var(--line);color:#435b6b}.small{font-size:12px;padding:7px 10px}.hint{font-size:12px;line-height:1.6;color:#728191}.provider{border:1px solid #eedfbb;border-radius:10px;background:#fff9ed;color:#896117;padding:13px 18px;margin-bottom:20px;font-size:13px;line-height:1.6}.provider.ready{background:#eaf5ef;border-color:#cbe7d8;color:#276343}#notice{padding:14px 18px;background:#e9f0ff;border-radius:10px;margin-bottom:16px;font-size:13px;white-space:pre-wrap}label{display:block;font-size:12px;font-weight:600;margin:13px 0 8px}textarea,input{font:inherit;font-size:14px;line-height:1.5;border:1px solid #ced7e1;border-radius:9px;background:#fcfdff;width:100%;padding:12px;resize:vertical;color:#172a3a}textarea:focus,input:focus{outline:2px solid #90b9af;outline-offset:1px}#login{max-width:560px}#login button{margin-top:18px}#sessions{display:flex;flex-direction:column;gap:7px;max-height:550px;overflow:auto}#sessions button{text-align:left;overflow-wrap:anywhere;background:#fff;color:#536879;font-weight:500}#sessions button.active{background:#eaf3ef;color:#175e4f}.sessions .hint{margin-top:25px}#messages{min-height:280px;max-height:530px;overflow-y:auto;scroll-behavior:smooth;padding:8px 2px 20px}.empty{text-align:center;padding:45px 16px}.avatar{display:inline-grid;place-items:center;background:#dcece6;color:#216b55;font-weight:800;border-radius:15px;width:48px;height:48px}.message{margin:12px 0;padding:14px 16px;border:1px solid #e6eaf0;border-radius:12px;background:#fafbfd;white-space:pre-wrap;overflow-wrap:anywhere;font-size:14px;line-height:1.6}.message.client{background:#edf5f2;border-color:#e1ece6;margin-left:32px}.message strong{display:block;font-size:11px;letter-spacing:.3px;margin-bottom:7px;color:#678274}.message button{display:block;margin-top:10px}.message.error{color:#8b581b;background:#fff8ec}.message.correction{border-left:3px solid #439c7a}.meta{font-size:10px;color:#83909c}.starters{display:flex;gap:6px;flex-wrap:wrap;margin-bottom:12px}.starters button{font-size:11px;border:1px solid var(--line);background:white;color:#627586;padding:6px 8px}.composer-footer{display:flex;gap:12px;justify-content:space-between;align-items:center;margin-top:10px}.composer-footer .hint{font-size:10px}.example,details{border-top:1px solid var(--line);margin-top:20px;padding-top:16px}summary{font-size:12px;cursor:pointer;color:#375e52}.example button{margin-top:12px}.teaching-note{margin-top:24px;padding:14px;border-radius:10px;background:#f5f8f7}.teaching-note ol{padding-left:18px;font-size:12px;line-height:1.8;color:#5c7166}.training textarea{font-size:13px}.training .section-title{margin-top:12px}#versions{display:flex;gap:6px;flex-direction:column;padding-top:10px}dialog{border:1px solid var(--line);border-radius:16px;padding:26px;max-width:580px;width:calc(100% - 30px)}dialog::backdrop{background:#18302477}dialog .section-title{margin:18px 0 0}[hidden]{display:none!important}@media(min-width:1500px){.layout{grid-template-columns:240px minmax(340px,1fr) 360px}}@media(max-width:1150px){.layout{grid-template-columns:180px minmax(320px,1fr)}.training{grid-column:1/-1}.training textarea{min-height:180px}}@media(max-width:700px){header{padding:0 18px;gap:15px;height:58px}header>a:not(.brand){font-size:12px}.brand span{display:none}.label{font-size:10px}main{padding:20px 12px}h1{font-size:26px}.heading p{font-size:13px}.layout{display:flex;flex-direction:column;gap:14px}.card{width:100%;padding:16px}.sessions .hint{display:none}#sessions{max-height:130px;flex-direction:row;flex-wrap:wrap}.section-title{margin-bottom:10px}#messages{max-height:480px;min-height:230px}.message.client{margin-left:18px}.composer-footer .hint{max-width:155px}.provider{font-size:12px}.training{order:3}.empty{padding:30px 8px}}

#brief-dialog{max-height:90dvh;overflow-y:auto}#brief-error{color:#943323}#brief-dialog .section-title{flex-wrap:wrap}#open-brief{width:100%}