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var(--line);flex-direction:column;align-items:start}.main-nav.is-open{display:flex}.header-actions{margin-left:auto}.mobile-menu{display:grid;place-items:center}.hero-copy h1{font-size:56px}.hero-art{min-height:330px}.hero-note{margin-top:45px}.signal-bar{grid-template-columns:1fr;padding:25px 24px;gap:18px}.content-section{padding:82px 24px 90px}.section-heading{display:block}.section-heading h2{margin-top:10px}.api-band{grid-template-columns:1fr;padding:72px 24px;gap:30px}.site-footer{padding:45px 24px 28px;grid-template-columns:1fr}.footer-links{justify-content:start}.auth-page{min-height:650px;padding:55px 24px;grid-template-columns:1fr}.auth-art{height:250px;order:2}.auth-card{order:1}.auth-card h1{font-size:43px}.chat-page{display:block}.chat-sidebar{min-height:auto;border-right:0;border-bottom:1px solid var(--line);padding:15px 24px}.conversation-list,.sidebar-label,.sidebar-bottom{display:none}.chat-toolbar{padding:28px 24px 20px;align-items:start;gap:12px}.chat-controls{display:grid;justify-items:end}.select-wrap span{display:none}.message-area{padding:24px}.composer{margin:0 24px}.prompt-chips{display:grid}.message{grid-template-columns:45px minmax(0,1fr);gap:10px}.key-panel{margin:14px 24px 0;display:grid}.key-panel .button{width:100%}.docs-page{padding:58px 24px 90px}.docs-body{grid-template-columns:1fr;gap:35px}.docs-nav{position:static;display:flex;flex-wrap:wrap;gap:13px 20px}.docs-intro{padding-bottom:55px}.docs-content h2{font-size:30px}}.hero-art img,.auth-art img{object-position:62% center}.hero-art img,.auth-art img{mix-blend-mode:normal}.composer-actions{display:flex;align-items:center;gap:8px}.attach-button{width:36px;height:36px;display:grid;place-items:center;color:var(--muted);border:1px solid transparent;cursor:pointer}.attach-button:hover{color:var(--orange);border-color:var(--line)}.attach-button input{position:absolute;width:1px;height:1px;opacity:0;pointer-events:none}.attachment-list{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 12px}.attachment-item{min-width:0;max-width:230px;display:inline-flex;align-items:center;gap:7px;padding:6px 8px;border:1px solid var(--line);background:#f1ede5;color:var(--ink);font-size:11px}.attachment-item img{width:28px;height:28px;object-fit:cover}.attachment-item span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.attachment-item button{display:grid;place-items:center;flex:0 0 auto;padding:2px;background:transparent;color:var(--muted)}.attachment-item button:hover{color:var(--orange)}.message-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.message-attachments img{display:block;max-width:min(320px,100%);max-height:240px;object-fit:contain;border:1px solid var(--line);background:#f1ede5}.message-file{display:inline-flex;align-items:center;gap:6px;padding:7px 9px;border:1px solid var(--line);background:#f1ede5;font-size:11px;font-weight:600}@media(max-width:680px){.chat-controls{gap:6px}.select-wrap select{max-width:145px}.effort-select select{max-width:105px}.attachment-item{max-width:190px}}