:root{--bg:#f4f1ea;--bg-elev:#ffffff;--bg-input:#ffffff;--border:#e5ded1;--text:#1c1a16;--text-dim:#8c8578;--accent:#a8863f;--accent-2:#c8a45c;--accent-soft:rgba(168,134,63,0.1);--user-bubble:#ffffff;--sidebar-bg:#17140f;--sidebar-text:#e9e3d6;--sidebar-dim:#9b9384;--sidebar-border:#2b2620;--radius:14px;--maxw:760px;--font-sans:"Helvetica Neue",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;--font-serif:Georgia,"Times New Roman",serif;font-family:var(--font-sans)}*{box-sizing:border-box}body,html{margin:0;padding:0;height:100%;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.shell{display:flex;height:100vh;height:100dvh;overflow:hidden}.sidebar{flex:0 0 264px;width:264px;background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;border-right:1px solid var(--sidebar-border);transition:margin-left .22s ease}.sidebar.closed{margin-left:-264px}.rail-backdrop{display:none}.sidebar-head{padding:20px 18px 14px}.sidebar-brand{font-weight:600;font-size:15px;letter-spacing:2.5px;text-transform:uppercase}.sidebar-brand b{font-weight:700}.sidebar-brand .cos{color:var(--accent-2)}.sidebar-tag{color:var(--sidebar-dim);font-size:10.5px;letter-spacing:1.5px;text-transform:uppercase;margin-top:4px}.sidebar-new{margin:4px 14px 10px;padding:10px 14px;background:transparent;border:1px solid var(--sidebar-border);color:var(--sidebar-text);border-radius:10px;cursor:pointer;font-size:13px;letter-spacing:.5px;display:flex;align-items:center;gap:8px}.sidebar-new:hover{border-color:var(--accent);color:#fff}.conv-list{flex:1 1;overflow-y:auto;padding:4px 8px 12px;display:flex;flex-direction:column;gap:2px}.conv-item{display:flex;align-items:center;gap:8px;padding:9px 10px;border-radius:9px;cursor:pointer;color:var(--sidebar-dim);font-size:13px;border:1px solid transparent}.conv-item:hover{background:rgba(255,255,255,.04);color:var(--sidebar-text)}.conv-item.active{background:rgba(200,164,92,.1);color:#fff;border-color:rgba(200,164,92,.25)}.conv-title{flex:1 1;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.conv-del{opacity:0;background:none;border:none;color:var(--sidebar-dim);cursor:pointer;font-size:14px;padding:0 2px;line-height:1}.conv-item:hover .conv-del{opacity:1}.conv-del:hover{color:#e5736f}.sidebar-foot{padding:12px 18px;border-top:1px solid var(--sidebar-border);color:var(--sidebar-dim);font-size:10.5px;letter-spacing:.5px}.main{flex:1 1;min-width:0;display:flex;flex-direction:column;height:100vh;height:100dvh}.topbar{display:flex;align-items:center;gap:14px;padding:14px 22px;border-bottom:1px solid var(--border);background:var(--bg-elev)}.rail-toggle{background:none;border:none;cursor:pointer;color:var(--text-dim);font-size:18px;padding:2px 4px;line-height:1}.rail-toggle:hover{color:var(--accent)}.brand{font-weight:600;letter-spacing:2px;text-transform:uppercase;font-size:14px}.brand .dot{color:var(--accent);letter-spacing:1px}.tagline{color:var(--text-dim);font-size:10.5px;letter-spacing:1.5px;text-transform:uppercase;margin-left:auto}.tagline-logo{margin-left:auto;display:flex;align-items:center}.thread{flex:1 1;overflow-y:auto;padding:34px 20px 24px}.thread-inner{max-width:var(--maxw);margin:0 auto;display:flex;flex-direction:column;gap:24px}.msg{display:flex;gap:14px;line-height:1.65}.msg .avatar{flex:0 0 30px;height:30px;width:30px;border-radius:50%;display:grid;place-items:center;font-size:12px;font-weight:700;letter-spacing:.5px}.msg.user .avatar{background:var(--text);color:#fff}.msg.assistant .avatar{background:var(--accent);color:#fff;border-radius:50%}.msg .body{flex:1 1;min-width:0}.msg.user .body{color:var(--text)}.msg .body p{margin:0 0 10px}.msg .body p:last-child{margin-bottom:0}.msg .body pre{background:#faf8f3;border:1px solid var(--border);border-radius:10px;padding:12px;overflow-x:auto}.msg .body code{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:13px}.msg .body h1,.msg .body h2,.msg .body h3{font-weight:600;letter-spacing:.2px;margin:16px 0 8px}.msg .body table{border-collapse:collapse;width:100%;margin:10px 0;font-size:14px}.msg .body td,.msg .body th{border:1px solid var(--border);padding:7px 11px;text-align:left}.msg .body th{background:#faf8f3;font-weight:600}.msg .body a{color:var(--accent)}.login-wrap{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;background:var(--bg);padding:24px}.login-card{width:100%;max-width:360px;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:38px 32px;display:flex;flex-direction:column;gap:14px;box-shadow:0 20px 60px rgba(28,26,22,.08)}.login-brand{font-size:18px;font-weight:600;letter-spacing:3px;text-transform:uppercase;color:var(--text)}.login-brand span{color:var(--accent)}.login-tag{color:var(--text-dim);font-size:11px;letter-spacing:1.5px;text-transform:uppercase;margin:-8px 0 10px}.login-card input{background:var(--bg-input);border:1px solid var(--border);border-radius:10px;padding:13px 15px;color:var(--text);font-size:15px;outline:none}.login-card input:focus{border-color:var(--accent)}.login-card button{background:var(--accent);color:#fff;border:none;border-radius:10px;padding:13px;font-weight:600;font-size:13px;letter-spacing:1.5px;text-transform:uppercase;cursor:pointer}.login-card button:disabled{opacity:.5;cursor:default}.login-error{color:#c0564f}.login-error,.login-ok{font-size:13px;text-align:center}.login-ok{color:#3b7a57}.login-notice{color:var(--accent);background:var(--accent-soft);border:1px solid rgba(168,134,63,.25);border-radius:10px;padding:10px 12px;font-size:12.5px;text-align:center;line-height:1.4}.login-link{background:none!important;border:none!important;color:var(--text-dim)!important;font-size:12px!important;letter-spacing:normal!important;text-transform:none!important;padding:4px!important;cursor:pointer;text-decoration:underline}.sidebar-account{display:flex;flex-direction:column;gap:6px;padding:10px 12px 4px}.sidebar-user{display:flex;align-items:center;gap:10px;padding:8px 8px 10px;margin-bottom:4px;border-top:1px solid var(--sidebar-border)}.user-avatar{flex:0 0 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16px;font-weight:600;font-size:12px;letter-spacing:1px;text-transform:uppercase;cursor:pointer}.modal-actions button:disabled{opacity:.5;cursor:default}.examples-card{width:100%;max-width:560px;max-height:82vh;background:var(--bg-elev);border:1px solid var(--border);border-radius:var(--radius);padding:22px 24px;display:flex;flex-direction:column;box-shadow:0 20px 60px rgba(28,26,22,.18)}.examples-head{display:flex;align-items:center;justify-content:space-between}.examples-close{background:none;border:none;color:var(--text-dim);font-size:15px;cursor:pointer;line-height:1;padding:2px 4px}.examples-close:hover{color:var(--accent)}.examples-sub{color:var(--text-dim);font-size:12.5px;margin:6px 0 4px}.examples-body{overflow-y:auto;margin-top:8px;display:flex;flex-direction:column;gap:16px}.examples-group-title{font-size:10.5px;font-weight:600;letter-spacing:1.5px;text-transform:uppercase;color:var(--accent);margin-bottom:8px}.examples-items{display:flex;flex-wrap:wrap;gap:8px}.examples-chip{background:var(--bg);border:1px solid var(--border);color:var(--text);border-radius:999px;padding:8px 14px;font-size:13px;cursor:pointer;text-align:left;transition:all .15s ease}.examples-chip:hover{border-color:var(--accent);background:var(--accent-soft)}.ph{color:var(--accent);font-weight:600}.chart-loading{padding:14px 16px;margin:12px 0;border:1px dashed var(--border);border-radius:12px}.chart-loading,.status{color:var(--text-dim);font-size:13px}.status{display:flex;align-items:center;gap:8px}.status .pulse{width:7px;height:7px;border-radius:50%;background:var(--accent);animation:pulse 1.1s ease-in-out infinite}@keyframes pulse{0%,to{opacity:.3}50%{opacity:1}}.composer-wrap{padding:14px 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button.stop-btn:hover{background:#000}.hint{text-align:center;color:var(--text-dim);font-size:11px;margin-top:10px;letter-spacing:.3px}.hint-link{background:none;border:none;color:var(--accent);font:inherit;cursor:pointer;padding:0;text-decoration:underline;text-underline-offset:2px}.hint-link:hover{color:var(--accent-2)}.hint-sep{margin:0 6px;opacity:.6}.empty-more{margin-top:18px;background:none;border:none;color:var(--accent);font-size:13px;cursor:pointer;letter-spacing:.3px}.empty-more:hover{color:var(--accent-2)}.empty{text-align:center;color:var(--text-dim);margin-top:16vh}.empty h1{color:var(--text);font-family:var(--font-serif);font-weight:400;font-size:34px;letter-spacing:.3px;margin-bottom:8px}.empty p{font-size:14px}.suggestions{display:flex;flex-wrap:wrap;gap:10px;justify-content:center;margin-top:26px}.suggestions button{background:var(--bg-elev);border:1px solid var(--border);color:var(--text-dim);border-radius:999px;padding:9px 16px;font-size:13px;cursor:pointer;transition:all .15s ease}.suggestions button:hover{color:var(--text);border-color:var(--accent)}@media (max-width:720px){.sidebar{position:fixed;top:0;left:0;z-index:30;width:82vw;max-width:300px;flex-basis:82vw;height:100vh;height:100dvh;box-shadow:0 0 40px rgba(0,0,0,.4)}.sidebar.closed{margin-left:-82vw}.rail-backdrop{display:block;position:fixed;inset:0;z-index:25;background:rgba(10,8,5,.5)}.tagline{display:none}.topbar{padding:11px 14px;gap:10px}.brand{font-size:13px;letter-spacing:1.5px}.thread{padding:20px 14px 16px}.thread-inner{gap:20px}.composer-wrap{padding:10px 12px calc(14px + env(safe-area-inset-bottom))}.hint{font-size:10px}.msg{gap:10px}.msg .avatar{flex-basis:26px;height:26px;width:26px}.msg .body table{display:block;width:max-content;max-width:100%;overflow-x:auto;-webkit-overflow-scrolling:touch}.composer textarea,.login-card input,.modal-card input{font-size:16px}.empty{margin-top:8vh}.empty h1{font-size:27px}.login-card{padding:30px 22px}.modal-overlay{padding:16px}.examples-card{padding:18px 16px;max-height:88vh}}