:root{--bg:#f6f6f3;--panel:#fff;--text:#1c1c1a;--muted:#73736e;--line:#e7e7e2;--soft:#efefe9}*{box-sizing:border-box}html,body{background:var(--bg);color:var(--text);margin:0;padding:0;font-family:ui-sans-serif,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,textarea{font:inherit}a{color:inherit}.shell{min-height:100vh;padding:20px}.topbar{justify-content:space-between;align-items:center;max-width:1200px;margin:0 auto 16px;display:flex}.brand{letter-spacing:.02em;font-size:22px;font-weight:600}.tag{color:var(--muted);font-size:13px}.grid{grid-template-columns:minmax(0,1fr) 360px;gap:16px;max-width:1200px;margin:0 auto;display:grid}.card{background:var(--panel);border:1px solid var(--line);border-radius:18px;overflow:hidden}.chat{flex-direction:column;min-height:72vh;display:flex}.messages{flex:1;padding:20px;overflow-y:auto}.msg{max-width:84%;margin-bottom:16px}.msg.user{margin-left:auto}.bubble{white-space:pre-wrap;border-radius:16px;padding:12px 14px;line-height:1.45}.user .bubble{color:#fff;background:#20201d;border-bottom-right-radius:5px}.luma .bubble{background:var(--soft);border-bottom-left-radius:5px}.composer{border-top:1px solid var(--line);gap:10px;padding:14px;display:flex}.composer textarea{resize:none;border:1px solid var(--line);background:#fff;border-radius:14px;flex:1;min-height:48px;padding:12px}.primary{color:#fff;cursor:pointer;background:#20201d;border:0;border-radius:14px;padding:0 18px}.side{padding:18px}.side h2{margin:0 0 6px;font-size:17px}.side p{color:var(--muted);margin-top:0;font-size:13px}.memory{border:1px solid var(--line);border-radius:14px;margin-top:10px;padding:12px}.memory .meta{color:var(--muted);margin-top:8px;font-size:12px}.memory-actions{gap:8px;margin-top:10px;display:flex}.secondary{border:1px solid var(--line);cursor:pointer;background:#fff;border-radius:10px;padding:7px 10px}.login{place-items:center;min-height:100vh;padding:20px;display:grid}.login-card{border:1px solid var(--line);background:#fff;border-radius:18px;width:min(420px,100%);padding:24px}.login-card input{border:1px solid var(--line);border-radius:12px;width:100%;margin-bottom:10px;padding:12px}.notice{color:var(--muted);font-size:13px}@media (max-width:820px){.shell{padding:10px}.grid{grid-template-columns:1fr}.side-card{order:-1}.chat{min-height:66vh}.topbar{padding:2px 4px}}