:root{--ink:#16322e;--muted:#6d7c75;--green:#255b49;--paper:#f6f7f2;--line:#e0e6dc;--accent:#e7f0df;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;color:var(--ink);background:var(--paper)}*{box-sizing:border-box}body{margin:0}button,input,textarea{font:inherit}button{cursor:pointer}button:disabled{cursor:wait;opacity:.5}[hidden]{display:none!important}.eyebrow{font-size:10px;font-weight:700;letter-spacing:2px;color:var(--muted)}.mark{width:56px;height:56px;background:var(--green);color:#fff;display:grid;place-items:center;border-radius:16px;font-size:32px;font-weight:600;font-family:Georgia,serif}.mark.small{width:38px;height:38px;font-size:26px;border-radius:12px}.login-screen{min-height:100vh;display:grid;place-items:center;padding:24px;background:radial-gradient(ellipse at 20% 20%,#e5ecda,transparent 55%),var(--paper)}.login-card{width:420px;max-width:100%;background:#fff;border:1px solid var(--line);border-radius:24px;padding:36px;box-shadow:0 20px 80px #183c2010}.login-card .mark{margin-bottom:28px}.login-card h1{font-size:30px;line-height:1.15;letter-spacing:-1px;margin:12px 0}.login-card p{color:var(--muted);line-height:1.5}.login-card label{display:block;font-size:12px;font-weight:600;margin:20px 0}.login-card input{display:block;width:100%;border:1px solid var(--line);border-radius:9px;padding:12px;margin-top:8px}.primary{background:var(--green);border:0;color:#fff;border-radius:9px;padding:13px;width:100%;font-weight:600}.login-card small{display:block;text-align:center;color:var(--muted);font-size:11px;margin-top:20px}.workspace{display:flex;min-height:100vh}aside{position:fixed;inset:0 auto 0 0;width:256px;border-right:1px solid var(--line);background:#eef1e8;padding:28px 20px;display:flex;flex-direction:column}.brand{display:flex;gap:12px;align-items:center}.brand strong{display:block;font-size:20px;letter-spacing:-.6px}.brand span{display:block;font-size:9px;letter-spacing:2px;color:var(--muted);margin-top:4px}.new-chat{margin:34px 0 30px;background:#fff;border:1px solid #d2ddca;border-radius:10px;padding:12px;text-align:left;font-weight:600;font-size:13px}.sidebar-heading{font-size:9px;font-weight:700;letter-spacing:1.5px;color:var(--muted);margin-bottom:14px}nav{overflow-y:auto;flex:1}.history-item{border:0;background:transparent;display:block;width:100%;text-align:left;border-radius:8px;padding:12px 9px;color:var(--ink);font-size:12px;margin-bottom:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-item:hover,.history-item.selected{background:#dfe8d5}.history-item small{display:block;font-size:9px;color:var(--muted);margin-bottom:4px}.sidebar-bottom{font-size:11px;color:var(--muted);display:flex;align-items:center;gap:7px;padding-top:20px}.local-dot{width:6px;height:6px;background:#639947;border-radius:50%}#logout{margin-left:auto;background:transparent;border:0;color:var(--muted);font-size:11px}main{margin-left:256px;width:calc(100% - 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