:root{--paper:#f6f1e8;--ink:#17231f;--muted:#65716c;--line:#d8d0c2;--panel:#fffaf1;--panel-strong:#f0e2c9;--forest:#173f35;--teal:#0f766e;--brick:#a44931;--amber:#d99a22;--blue:#2f6f9f;--white:#fff;--shadow:0 18px 54px #1e252129}*{box-sizing:border-box}html{background:var(--paper);color:var(--ink)}body{margin:0;font-family:Iowan Old Style,Palatino Linotype,Palatino,ui-serif,Georgia,serif;line-height:1.45}button,input,textarea,select{font:inherit}button{cursor:pointer}.app-shell{background:linear-gradient(115deg,#173f3517,transparent 38%),radial-gradient(circle at 94% 8%,#d99a223d,transparent 31%),repeating-linear-gradient(90deg,#17231f09 0 1px,transparent 1px 44px),var(--paper);min-height:100vh}.topbar{z-index:20;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);background:#f6f1e8eb;border-bottom:1px solid #17231f24;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:18px;padding:16px clamp(16px,3vw,40px);display:grid;position:sticky;top:0}.brand{align-items:center;gap:12px;min-width:0;display:flex}.brand-mark{width:42px;height:42px;color:var(--paper);background:var(--forest);border-radius:8px;place-items:center;display:grid}.brand h1{letter-spacing:0;margin:0;font-size:1.22rem}.brand p{color:var(--muted);margin:2px 0 0;font-size:.9rem}.top-actions{align-items:center;gap:10px;display:flex}.session-pill,.status-pill,.source-pill{border:1px solid var(--line);min-height:32px;color:var(--forest);white-space:nowrap;background:#fffaf1c2;border-radius:999px;align-items:center;gap:6px;padding:0 10px;font-size:.88rem;display:inline-flex}.workspace{grid-template-columns:280px minmax(0,1fr) 340px;gap:16px;padding:18px clamp(16px,3vw,40px) 40px;display:grid}.rail,.main-panel,.agent-panel,.panel,.login-panel{border:1px solid var(--line);background:#fffaf1e6;border-radius:8px;box-shadow:inset 0 1px #ffffffb3}.rail,.agent-panel{align-self:start;max-height:calc(100vh - 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