.a4-bnb-head{display:grid;grid-template-columns:minmax(0,7fr) minmax(0,5fr);gap:clamp(24px,4vw,64px);align-items:end}.a4-bnb-head>*{min-width:0}.a4-bnb-head nav a{text-decoration:none}.a4-bnb-head nav a:hover{text-decoration:underline;text-underline-offset:4px}.a4-bnb-title{margin:18px 0;overflow-wrap:anywhere}.a4-bnb-actions{display:flex;flex-wrap:wrap;align-items:center;gap:8px 24px;margin:26px 0 0}.a4-bnb-chat{margin:0;display:grid;gap:10px;padding:clamp(16px,2vw,26px);background:var(--a4-paper);border:1px solid var(--a4-ash);border-radius:10px;min-width:0}.a4-bnb-msg{margin:0;padding:10px 14px;max-width:88%;font-size:15px;line-height:1.45;border-radius:10px;overflow-wrap:anywhere}.a4-bnb-msg.in{justify-self:start;border:1px solid var(--a4-ash)}.a4-bnb-msg.out{justify-self:end;background:var(--a4-ink);color:var(--a4-canvas)}.a4-bnb-note{margin:4px 0 0;color:#55554f}.a4-bnb-steps,.a4-bnb-list{list-style:none;padding-inline:0;margin-block:clamp(24px,3vw,40px) 0}.a4-bnb-steps .a4-row h3,.a4-bnb-steps .a4-row p{margin:0}.a4-bnb-grid{margin-top:clamp(24px,3vw,40px)}.a4-bnb-card{padding:26px;display:grid;gap:12px;align-content:start;min-width:0;background:var(--a4-paper);border:1px solid var(--a4-ash);border-radius:10px}.a4-bnb-card h3,.a4-bnb-card p{margin:0}@media (max-width: 900px){.a4-bnb-head{grid-template-columns:minmax(0,1fr)}.a4-bnb-msg{max-width:94%}}