:root{color-scheme:light;--bg:#f4f6f8;--panel:#fff;--text:#16202a;--muted:#657386;--line:#dce2ea;--accent:#155eef;--accent-dark:#0f47b8;--ok:#087443;--warn:#b54708;--bad:#b42318;--ink-soft:#253142;--shadow:0 14px 38px rgba(16,24,40,.08)}*{box-sizing:border-box}body{margin:0;background:linear-gradient(180deg,#edf3ff 0,rgba(237,243,255,0) 320px),var(--bg);color:var(--text);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}button,input,select,textarea{font:inherit}.shell{width:min(1240px,calc(100vw - 32px));margin:0 auto;padding:22px 0 36px}.brand,.download-actions,.hero,.history-actions,.node-segment,.panel-title,.status-card,.title-left,.topbar,.topbar-meta{display:flex;align-items:center}.topbar{justify-content:space-between;gap:18px;border:1px solid rgba(220,226,234,.8);border-radius:8px;background:hsla(0,0%,100%,.78);padding:12px 14px;-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px)}.brand{gap:10px}.brand-mark{display:inline-flex;width:34px;height:34px;align-items:center;justify-content:center;border-radius:8px;background:var(--text);color:#fff;font-size:13px;font-weight:900}.brand small,.brand strong{display:block}.brand small{margin-top:2px;color:var(--muted);font-size:12px}.topbar-meta{flex-wrap:wrap;gap:8px}.topbar-meta span{border:1px solid var(--line);border-radius:999px;background:#fff;padding:5px 9px;color:#344054;font-size:12px;font-weight:800}.hero{align-items:flex-end;justify-content:space-between;gap:24px;padding:30px 0 22px}.eyebrow{margin:0 0 10px;color:var(--accent);font-size:13px;font-weight:700;letter-spacing:0;text-transform:uppercase}h1,h2,h3,p{margin-top:0}h1{max-width:760px;margin-bottom:12px;font-size:clamp(32px,4vw,50px);line-height:1.08;letter-spacing:0}.subtitle,h2{margin-bottom:0;font-size:18px}.subtitle{max-width:760px;color:var(--muted);line-height:1.7}.status-card{min-width:300px;gap:12px;border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:16px;box-shadow:var(--shadow)}.status-card p{margin:4px 0 0;color:var(--muted);font-size:13px}.spin{animation:spin .9s linear infinite;color:var(--accent)}@keyframes spin{to{transform:rotate(1turn)}}.error-banner{margin-bottom:16px;border:1px solid #ffd4cc;border-radius:8px;background:#fff7f5;color:var(--bad);padding:12px 14px;font-size:14px;font-weight:700;line-height:1.5}.login-layout{display:grid;place-items:start center;padding-top:12px}.login-panel{width:min(460px,100%)}.session-row{display:flex;align-items:center;justify-content:space-between;gap:12px;border:1px solid var(--line);border-radius:8px;background:hsla(0,0%,100%,.82);padding:10px 12px;color:var(--muted);font-size:13px;font-weight:800}.graph-box,.grid,.metrics-grid,.workspace{display:grid;grid-gap:18px;gap:18px}.grid,.workspace{grid-template-columns:1fr 1fr;margin-top:18px}.metrics-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:14px;margin-bottom:18px}.metric-card{display:flex;gap:12px;border:1px solid var(--line);background:hsla(0,0%,100%,.9);padding:15px;box-shadow:0 8px 24px rgba(16,24,40,.05)}.metric-card,.metric-card>span{align-items:center;border-radius:8px}.metric-card>span{display:inline-flex;width:34px;height:34px;justify-content:center;background:#e8f0ff;color:var(--accent)}.metric-card small{display:block;color:var(--muted);font-size:12px;font-weight:800}.metric-card strong{display:block;margin-top:6px;font-size:28px;line-height:1}.analytics-panel,.graph-panel,.history-panel{margin-top:18px}.graph-box{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.graph-column{border:1px solid var(--line);border-radius:8px;padding:12px}.graph-column h3{margin:0 0 10px;font-size:15px}.node-chain{display:flex;flex-wrap:wrap;align-items:center;gap:8px}.node-segment{gap:8px}.node-pill{border:1px solid #bdd0ff;border-radius:999px;background:#f2f6ff;padding:7px 10px;color:#173b82;font-size:13px;font-weight:800}.node-arrow{color:var(--muted)}.panel{border:1px solid var(--line);border-radius:8px;background:var(--panel);padding:18px;box-shadow:0 8px 24px rgba(16,24,40,.04)}.panel-title{gap:10px;margin-bottom:16px}.split-title{justify-content:space-between;gap:14px}.title-left{gap:10px}.panel-title span{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:#e8f0ff;color:var(--accent);font-weight:800}label{display:grid;grid-gap:8px;gap:8px;margin-bottom:14px;color:#344054;font-size:14px;font-weight:700}input,textarea{width:100%;border:1px solid var(--line);border-radius:8px;padding:12px;color:var(--text);background:#fff}textarea{resize:vertical}.secondary-link,button{min-height:44px;border:0;border-radius:8px;background:var(--accent);color:#fff;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;text-decoration:none;transition:background .16s ease,border-color .16s ease,transform .16s ease}button{width:100%}.secondary-link:hover:not(.disabled),button:hover:not(:disabled){background:var(--accent-dark);transform:translateY(-1px)}.secondary-link.disabled,button:disabled{cursor:not-allowed;opacity:.45;pointer-events:none}.download-actions,.history-actions{gap:8px}.history-actions select{border:1px solid var(--line);border-radius:8px;padding:0 10px}.history-actions select,.secondary-button,.secondary-link{min-height:34px;background:#fff;color:var(--text);font-size:13px}.secondary-button,.secondary-link{width:auto;border:1px solid var(--line);padding:0 12px}.secondary-button:hover:not(:disabled),.secondary-link:hover:not(.disabled){background:#f1f5f9}.hint{margin:12px 0 0;color:var(--muted);font-size:13px}.retry-box{margin-top:14px;border:1px solid #ffd4cc;border-radius:8px;background:#fff7f5;padding:12px}.retry-box label{margin-bottom:10px}.retry-box button{background:var(--bad)}.retry-box button:hover:not(:disabled){background:#8f1b13}.empty{color:var(--muted)}.history-list{display:grid;grid-gap:10px;gap:10px;max-height:340px;overflow:auto}.history-item{width:100%;min-height:0;display:grid;grid-template-columns:minmax(0,1.1fr) minmax(320px,.9fr);grid-gap:12px;gap:12px;align-items:center;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);padding:12px;text-align:left}.history-item:hover{border-color:#9db7f8;background:#f8fbff;transform:translateY(-1px)}.history-item.active{border-color:var(--accent);background:#f2f6ff}.history-main{min-width:0;display:grid;grid-gap:5px;gap:5px}.history-main strong{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.history-main small,.history-meta{color:var(--muted);font-size:12px}.history-meta{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:8px}.status-badge{border-radius:999px;background:#eef2f6;color:#344054;padding:2px 8px;font-weight:800}.status-completed{background:#e7f8ef;color:var(--ok)}.status-waiting_human_confirm{background:#fff4e5;color:var(--warn)}.status-queued{background:#edf3ff;color:var(--accent)}.status-failed{background:#fff1f0;color:var(--bad)}.plan-item,.trace-item{border:1px solid var(--line);border-radius:8px;padding:12px;margin-bottom:10px}.plan-item strong,.trace-item strong{display:block;margin-bottom:6px}.plan-item p,.trace-item p{margin:0;color:var(--muted);line-height:1.6}.trace{max-height:520px;overflow:auto}.trace-status{display:inline-flex;margin-left:8px;color:var(--accent);font-size:12px}.trace-status.completed{color:var(--ok)}.trace-status.failed{color:var(--bad)}.trace-status.waiting{color:var(--warn)}.report{min-height:520px;max-height:520px;overflow:auto;margin:0;border:1px solid var(--line);border-radius:8px;background:#fbfcfe;padding:14px;color:var(--ink-soft);white-space:pre-wrap;line-height:1.65;font-size:13px}.kpi-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));grid-gap:12px;gap:12px;margin-bottom:16px}.kpi-card{border:1px solid var(--line);border-radius:8px;background:#fbfcfe;padding:12px}.kpi-card span{display:block;color:var(--muted);font-size:12px;font-weight:800}.kpi-card strong{display:block;margin-top:8px;color:var(--text);font-size:20px;line-height:1.2}.chart-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));grid-gap:14px;gap:14px}.chart-card{min-width:0;border:1px solid var(--line);border-radius:8px;background:#fff;padding:12px}.chart-card h3{margin:0 0 10px;font-size:15px}@media (max-width:900px){.chart-grid,.graph-box,.grid,.hero,.kpi-grid,.metrics-grid,.workspace{grid-template-columns:1fr;display:grid}.hero,.session-row,.topbar{align-items:flex-start;flex-direction:column}.status-card{min-width:0}.split-title{align-items:flex-start;flex-direction:column}.history-actions{width:100%}.history-actions button,.history-actions select{flex:1 1}.history-item{grid-template-columns:1fr}.history-meta{justify-content:flex-start}}