:root{
    --bg:#f5f7fa; --panel:#ffffff; --ink:#1f2937; --muted:#6b7280;
    --line:#e5e7eb; --brand:#2563eb; --brand2:#0ea5e9; --up:#dc2626; --down:#16a34a;
    --accent:#f59e0b; --shadow:0 1px 3px rgba(0,0,0,.08),0 1px 2px rgba(0,0,0,.04);
  }
  *{box-sizing:border-box;}
  html,body{height:100%;}
  body{margin:0;font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;
    background:var(--bg);color:var(--ink);font-size:14px;line-height:1.5;
    display:flex;flex-direction:column;overflow:hidden;}
  header{background:linear-gradient(90deg,var(--brand),var(--brand2));color:#fff;padding:14px 22px;
    display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow);flex:0 0 auto;}
  header h1{font-size:18px;margin:0;font-weight:600;letter-spacing:.5px;}
  header .tag{font-size:12px;opacity:.85;background:rgba(255,255,255,.18);padding:3px 10px;border-radius:20px;}
  .layout{display:grid;grid-template-columns:380px 1fr;gap:16px;padding:16px;align-items:stretch;height:100%;overflow:hidden;}
  .panel{background:var(--panel);border:1px solid var(--line);border-radius:12px;box-shadow:var(--shadow);}
  .panel .hd{padding:12px 16px;border-bottom:1px solid var(--line);font-weight:600;display:flex;
    justify-content:space-between;align-items:center;}
  .panel .hd .hd-actions{display:flex;gap:8px;align-items:center;font-weight:400;}
  .panel .bd{padding:14px 16px;}
  .sidebar{position:static;height:100%;min-height:0;overflow-y:auto;}
  .field{margin-bottom:14px;}
  .field label{display:block;font-size:12px;color:var(--muted);margin-bottom:5px;}
  .row{display:flex;gap:8px;}
  .row > *{flex:1;}
  input[type=date],input[type=number],select{width:100%;padding:7px 9px;border:1px solid var(--line);
    border-radius:8px;font-size:13px;background:#fff;color:var(--ink);}
  .cat{margin:10px 0 4px;font-size:12px;font-weight:600;color:var(--brand);
    text-transform:uppercase;letter-spacing:.5px;}
  .factor{display:flex;align-items:center;gap:8px;padding:6px 0;border-bottom:1px dashed var(--line);}
  .factor .cb{flex:0 0 auto;}
  .factor .meta{flex:1;min-width:0;}
  .factor .name{font-weight:500;}
  .factor .desc{font-size:11px;color:var(--muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;}
  .factor input[type=range]{flex:0 0 90px;width:90px;}
  .factor .wval{flex:0 0 34px;text-align:right;font-variant-numeric:tabular-nums;color:var(--brand);font-weight:600;}
  .btn{background:var(--brand);color:#fff;border:none;padding:11px 16px;border-radius:10px;font-size:14px;
    font-weight:600;cursor:pointer;width:100%;transition:.15s;}
  .btn:hover{background:#1d4ed8;}
  .btn:disabled{opacity:.6;cursor:not-allowed;}
  .btn.ghost{background:#fff;color:var(--brand);border:1px solid var(--brand);}
  .toolbar{display:flex;gap:10px;margin-bottom:14px;}
  .cards{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:10px;margin-bottom:16px;}
  .card{background:var(--panel);border:1px solid var(--line);border-radius:10px;padding:12px 14px;box-shadow:var(--shadow);}
  .card .k{font-size:12px;color:var(--muted);}
  .card .v{font-size:20px;font-weight:700;margin-top:4px;font-variant-numeric:tabular-nums;}
  .card .v.pos{color:var(--up);} .card .v.neg{color:var(--down);}
  .section-title{font-weight:600;margin:6px 0 10px;display:flex;align-items:center;gap:8px;}
  .section-title::before{content:"";width:4px;height:16px;background:var(--brand);border-radius:2px;}
  table{width:100%;border-collapse:collapse;font-size:13px;}
  th,td{text-align:left;padding:8px 10px;border-bottom:1px solid var(--line);}
  th{color:var(--muted);font-weight:600;font-size:12px;white-space:nowrap;}
  th.num,td.num{text-align:right;font-variant-numeric:tabular-nums;}
  th.num{padding-right:10px;}
  .pos{color:var(--up);} .neg{color:var(--down);}
  .charts{display:grid;grid-template-columns:1.4fr 1fr;gap:16px;}
  .chartbox{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px;box-shadow:var(--shadow);}
  .chartbox h3{margin:0 0 10px;font-size:14px;}
  canvas{max-width:100%;}
  /* 运行回测前的动态占位 */
  .empty-state{display:flex;flex-direction:column;align-items:center;justify-content:center;
    min-height:440px;text-align:center;padding:40px 20px;color:var(--muted);}
  .empty-anim{width:260px;height:130px;margin-bottom:20px;animation:esFloat 3s ease-in-out infinite;}
  .empty-svg{width:100%;height:100%;overflow:visible;}
  .empty-svg .es-line{stroke-dasharray:320;stroke-dashoffset:320;animation:esDraw 2.6s ease-in-out infinite alternate;}
  .empty-svg .es-bench{animation:esMarch 1.1s linear infinite;}
  .empty-svg .es-dot{animation:esPulse 1.6s ease-in-out infinite;}
  .empty-title{font-size:16px;font-weight:600;color:var(--ink);margin-bottom:7px;}
  .empty-sub{font-size:13px;color:var(--muted);max-width:330px;line-height:1.6;}
  @keyframes esFloat{0%,100%{transform:translateY(0)}50%{transform:translateY(-7px)}}
  @keyframes esDraw{from{stroke-dashoffset:320}to{stroke-dashoffset:0}}
  @keyframes esMarch{to{stroke-dashoffset:-30}}
  @keyframes esPulse{0%,100%{opacity:1}50%{opacity:.35}}
  .err{background:#fef2f2;border:1px solid #fecaca;color:#b91c1c;padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:13px;}
  .warnbox{background:#fffbeb;border:1px solid #fde68a;color:#92400e;padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:13px;line-height:1.6;}
  .hint{font-size:11px;color:var(--muted);margin-top:4px;}
  .pill{display:inline-block;background:#eff6ff;color:var(--brand);border-radius:6px;padding:2px 8px;font-size:11px;margin-left:6px;}
  .pill-baseline{background:#ecfdf5;color:#059669;border:1px solid #a7f3d0;}
  .seg{display:flex;background:#eef2f7;border-radius:10px;padding:3px;gap:3px;}
  .segbtn{flex:1;border:none;background:transparent;padding:8px;border-radius:8px;font-size:13px;cursor:pointer;color:var(--muted);font-weight:600;transition:.15s;}
  .segbtn.active{background:#fff;color:var(--brand);box-shadow:var(--shadow);}
  .chips{display:flex;flex-wrap:wrap;gap:6px;}
  .chips button{flex:1;min-width:60px;border:1px solid var(--line);background:#fff;padding:8px 4px;border-radius:8px;font-size:12px;cursor:pointer;color:var(--ink);transition:.15s;}
  .chips button.active{border-color:var(--brand);background:#eff6ff;color:var(--brand);font-weight:600;}
  .preset-desc{font-size:11px;color:var(--muted);margin-top:4px;line-height:1.4;}
  .iinfo{display:inline-flex;align-items:center;justify-content:center;width:16px;height:16px;margin-left:6px;border-radius:50%;background:var(--brand);color:#fff;font-size:11px;font-style:italic;font-family:Georgia,'Times New Roman',serif;cursor:pointer;vertical-align:middle;user-select:none;flex:0 0 auto;}
  .iinfo:hover{opacity:.82;}
  .modal{position:fixed;inset:0;z-index:1000;display:none;align-items:center;justify-content:center;padding:16px;}
  .modal.show{display:flex;}
  .modal-mask{position:absolute;inset:0;background:rgba(15,23,42,.45);}
  .modal-card{position:relative;background:var(--panel);border-radius:14px;max-width:580px;width:100%;max-height:82vh;overflow:auto;box-shadow:0 20px 60px rgba(0,0,0,.28);animation:pop .15s ease;}
  @keyframes pop{from{transform:translateY(8px) scale(.98);opacity:0;}to{transform:none;opacity:1;}}
  .modal-head{display:flex;justify-content:space-between;align-items:center;padding:14px 18px;border-bottom:1px solid var(--line);position:sticky;top:0;background:var(--panel);}
  .modal-head #infoTitle{font-weight:700;font-size:15px;color:var(--ink);}
  .modal .x{border:none;background:none;font-size:22px;line-height:1;cursor:pointer;color:var(--muted);padding:0 4px;}
  .modal .x:hover{color:var(--ink);}
  .modal-body{padding:16px 18px;font-size:13px;line-height:1.75;color:var(--ink);white-space:pre-wrap;}
  #viewToggle{background:rgba(255,255,255,.14);border-radius:8px;padding:2px;display:inline-flex;align-items:center;height:32px;}
  #viewToggle .segbtn{color:rgba(255,255,255,.85);font-size:12px;font-weight:500;padding:0 14px;height:28px;border-radius:6px;transition:.15s;white-space:nowrap;}
  #viewToggle .segbtn:hover{color:#fff;background:rgba(255,255,255,.10);}
  #viewToggle .segbtn.active{background:rgba(255,255,255,.95);color:var(--brand);font-weight:600;}
  /* 模拟任务卡片优化 */
  .task-card{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:14px 16px;box-shadow:var(--shadow);border-left:4px solid var(--brand);transition:.15s;position:relative;cursor:pointer;}
  .task-card.selected{border-left-color:#1d4ed8;box-shadow:0 4px 14px rgba(37,99,235,.18);}
  .task-card:hover{box-shadow:0 4px 12px rgba(0,0,0,.10);transform:translateY(-1px);}
  .task-card .tc-head{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:6px;gap:8px;}
  .task-card .tc-name{font-weight:700;font-size:15px;color:var(--ink);line-height:1.3;flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .task-card .tc-tag{flex:0 0 auto;font-size:11px;font-weight:600;background:#eff6ff;color:var(--brand);padding:3px 8px;border-radius:6px;border:1px solid rgba(37,99,235,.15);}
  .task-card .tc-del{flex:0 0 auto;width:28px;height:28px;display:flex;align-items:center;justify-content:center;background:none;border:1px solid transparent;color:#d1d5db;font-size:15px;line-height:1;cursor:pointer;border-radius:6px;transition:.15s;padding:0;}
  .task-card .tc-del:hover{color:#dc2626;border-color:#fca5a5;background:#fef2f2;}
  .task-card .tc-meta{display:flex;flex-wrap:wrap;gap:5px 12px;font-size:11.5px;color:var(--muted);align-items:center;line-height:1.7;}
  .task-card .tc-meta span{white-space:nowrap;display:inline-flex;align-items:center;gap:3px;}
  .task-card .tc-last{display:flex;align-items:center;gap:7px;font-size:11.5px;padding:5px 10px;border-radius:6px;margin-top:8px;background:#f9fafb;border:1px solid var(--line);}
  .task-card .tc-last .lr-label{color:var(--muted);white-space:nowrap;}
  .task-card .tc-last .lr-window{flex:1;color:var(--ink);font-size:10.5px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;}
  .task-card .tc-last .lr-ret{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;min-width:58px;text-align:right;}
  .task-card .tc-last .lr-n{color:var(--muted);font-size:10.5px;white-space:nowrap;min-width:0;flex:1;overflow:hidden;text-overflow:ellipsis;}
  .task-card .tc-actions{display:flex;gap:8px;margin-top:10px;}
  .task-card .tc-actions .btn-run{width:100%;background:var(--brand);color:#fff;border:none;padding:9px 14px;border-radius:8px;font-size:13px;font-weight:600;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:.15s;}
  .task-card .tc-actions .btn-run:hover{background:#1d4ed8;}
  .task-card .tc-actions .auto-switch{display:inline-flex;align-items:center;gap:5px;font-size:12px;color:var(--muted);cursor:pointer;user-select:none;white-space:nowrap;}
  .task-card .tc-actions .auto-switch input{width:15px;height:15px;accent-color:var(--brand);cursor:pointer;margin:0;}
  .task-card .tc-auto{display:flex;align-items:center;gap:6px;font-size:11px;color:var(--muted);margin-top:8px;}
  .task-card .tc-auto .dot{width:7px;height:7px;border-radius:50%;background:#cbd5e1;flex:0 0 auto;}
  .task-card .tc-auto.on{color:#047857;}
  .task-card .tc-auto.on .dot{background:#10b981;box-shadow:0 0 0 3px rgba(16,185,129,.18);}
  /* 监控任务：信号动作徽标 + 日志时间线 */
  .act{display:inline-block;padding:2px 9px;border-radius:6px;font-size:12px;font-weight:600;white-space:nowrap;}
  .act-buy{background:#fef2f2;color:#dc2626;border:1px solid #fca5a5;}
  .act-sell{background:#f0fdf4;color:#16a34a;border:1px solid #86efac;}
  .act-hold{background:#f1f5f9;color:#475569;border:1px solid #e2e8f0;}
  .act-adjust{background:#fff7ed;color:#ea580c;border:1px solid #fed7aa;}
  .act-flat{background:#f8fafc;color:#94a3b8;border:1px solid #e2e8f0;}
  .mon-log-item{border:1px solid var(--line);border-radius:8px;padding:9px 12px;background:var(--panel);cursor:pointer;transition:.12s;}
  .mon-log-item:hover{background:var(--bg);}
  .mon-log-item.active{border-left:3px solid var(--brand);background:rgba(37,99,235,.06);padding-left:13px;}
  .mon-log-item .ml-head{display:flex;justify-content:space-between;gap:8px;font-size:12px;margin-bottom:3px;}
  .mon-log-item .ml-ret{font-weight:700;font-variant-numeric:tabular-nums;white-space:nowrap;}
  .mon-log-item .ml-sum{font-size:11.5px;color:var(--muted);}
  /* 监控日志悬浮提示（fixed 定位，避免被父容器 overflow 裁剪） */
  .mon-log-tooltip{position:fixed;display:none;padding:10px 12px;background:#1f2937;color:#f3f4f6;border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.3);z-index:9999;min-width:280px;max-width:400px;font-size:12px;pointer-events:none;}
  .mon-log-tooltip::before{content:'';position:absolute;left:20px;bottom:100%;border:6px solid transparent;border-bottom-color:#1f2937;}
  .mon-log-tooltip .tooltip-title{font-weight:700;font-size:13px;margin-bottom:8px;color:#60a5fa;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:6px;}
  .mon-log-tooltip .tooltip-item{display:flex;align-items:center;gap:8px;padding:5px 0;border-bottom:1px dashed rgba(255,255,255,.08);}
  .mon-log-tooltip .tooltip-item:last-child{border-bottom:none;}
  .mon-log-tooltip .tooltip-code{color:#9ca3af;font-size:11px;font-family:'SF Mono',Monaco,monospace;min-width:70px;}
  .mon-log-tooltip .tooltip-name{color:#f3f4f6;font-weight:500;flex:1;}
  .mon-log-tooltip .tooltip-price{color:#fbbf24;font-weight:600;font-variant-numeric:tabular-nums;min-width:60px;text-align:right;}
  .mon-log-tooltip .tooltip-weight{color:#34d399;font-weight:600;min-width:50px;text-align:right;}
  
  /* 监控任务卡片悬浮提示（fixed 定位，避免被父容器 overflow 裁剪） */
  .task-card-tooltip{position:fixed;display:none;padding:12px 14px;background:#1f2937;color:#f3f4f6;border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.3);z-index:9999;min-width:320px;max-width:500px;font-size:12px;flex-direction:column;}
  .task-card-tooltip.show{display:flex;}
  .task-card-tooltip .tooltip-title{font-weight:700;font-size:13px;margin-bottom:10px;color:#60a5fa;border-bottom:1px solid rgba(255,255,255,.1);padding-bottom:6px;flex-shrink:0;}
  .task-card-tooltip .tooltip-timeline{overflow-y:auto;flex:1;min-height:0;}
  .task-card-tooltip .timeline-item{display:flex;gap:10px;padding:8px 0;border-bottom:1px solid rgba(255,255,255,.08);}
  .task-card-tooltip .timeline-item:last-child{border-bottom:none;}
  .task-card-tooltip .timeline-dot{width:8px;height:8px;border-radius:50%;background:#60a5fa;margin-top:4px;flex-shrink:0;}
  .task-card-tooltip .timeline-content{flex:1;}
  .task-card-tooltip .timeline-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px;}
  .task-card-tooltip .timeline-date{color:#9ca3af;font-size:11px;}
  .task-card-tooltip .timeline-body{display:flex;align-items:center;gap:8px;flex-wrap:wrap;}
  .task-card-tooltip .tooltip-name{color:#f3f4f6;font-weight:500;}
  .task-card-tooltip .tooltip-code{color:#9ca3af;font-size:11px;font-family:'SF Mono',Monaco,monospace;}
  .task-card-tooltip .tooltip-price{color:#fbbf24;font-weight:600;font-variant-numeric:tabular-nums;}
  .task-card-tooltip .tooltip-weight{color:#34d399;font-weight:600;}
  /* 全屏 100% 高度布局：页面不滚动，各视图/分列内部滚动 */
  #viewBacktest,#viewSim,#viewMonitor{flex:1 1 auto;min-height:0;overflow:hidden;}
  #viewSim,#viewMonitor{display:flex;flex-direction:column;}
  #viewSim>.panel,#viewMonitor>.panel{flex:0 0 auto;overflow-y:auto;max-height:42vh;}
  .layout>main{overflow-y:auto;min-height:0;}
  #simResult{flex:1 1 auto;min-height:0;}
  #monResult{flex:1 1 auto;min-height:0;overflow-y:auto;}
  @media(max-width:980px){.layout{grid-template-columns:1fr;height:auto;overflow:visible;align-items:start;}
    .sidebar{position:static;max-height:none;height:auto;overflow:visible;}
    .layout>main{overflow:visible;}
    #viewBacktest,#viewSim,#viewMonitor{overflow:visible;}
    #viewSim,#viewMonitor{display:block;}
    #viewSim>.panel,#viewMonitor>.panel{max-height:none;overflow:visible;}
    #simResult,#monResult{flex:none;overflow:visible;}
    body{overflow:auto;}
    .charts{grid-template-columns:1fr;}}
  /* 监控信号 / 持仓 的因子分明细（可展开） */
  #monSignalTable tbody .sig-row.has-detail,
  #monHoldTable tbody .sig-row.has-detail{cursor:pointer;}
  #monSignalTable tbody .sig-row.has-detail:hover,
  #monHoldTable tbody .sig-row.has-detail:hover{background:var(--hover);}
  #monSignalTable tbody .sig-row.open,
  #monHoldTable tbody .sig-row.open{background:var(--hover);}
  .sig-detail>td{padding:0 !important;background:var(--bg-soft);}
  .fd-arrow{display:inline-block;width:13px;color:var(--muted);font-size:10px;transform:rotate(90deg);transition:transform .12s;vertical-align:middle;}
  .sig-row:not(.open) .fd-arrow{transform:rotate(0deg);}
  #monSignalTable thead th,#monHoldTable thead th{position:sticky;top:0;background:var(--bg);z-index:2;}
  .btn-mini{padding:3px 10px;font-size:12px;border:1px solid var(--line);background:var(--bg);border-radius:6px;cursor:pointer;color:var(--text);}
  .btn-mini:hover{background:var(--hover);}
  .fdetail{padding:10px 12px;}
  .fdetail-head{font-size:12px;color:var(--muted);margin-bottom:6px;font-weight:600;}
  .fdetail-tbl{width:100%;border-collapse:collapse;font-size:12px;}
  .fdetail-tbl th{text-align:left;color:var(--muted);font-weight:500;padding:4px 6px;border-bottom:1px solid var(--line);}
  .fdetail-tbl td{padding:4px 6px;border-bottom:1px dashed var(--line);}
  .fdetail-tbl .num{text-align:right;font-variant-numeric:tabular-nums;}
  .fdetail-tbl .pos{color:var(--up);} .fdetail-tbl .neg{color:var(--down);}
  /* 表头/单元格的悬浮说明 */
  .tip{position:relative;display:inline-flex;align-items:center;justify-content:center;
    width:13px;height:13px;margin-left:5px;border-radius:50%;background:var(--muted);
    color:#fff;font-size:9px;font-weight:700;cursor:help;vertical-align:middle;line-height:1;}
  .tip:hover,.tip:focus{background:var(--accent);outline:none;}
  .tip .tip-text{display:none;}
  /* 全局悬浮说明浮层：挂在 body、position:fixed，彻底避开滚动容器的 overflow 裁剪 */
  #globalTip{position:fixed;z-index:9999;max-width:280px;padding:9px 11px;background:#1f2937;
    color:#f3f4f6;font-size:11px;line-height:1.6;text-align:left;font-weight:400;white-space:normal;
    border-radius:7px;box-shadow:0 6px 18px rgba(0,0,0,.28);display:none;pointer-events:none;}
  #globalTip::after{content:'';position:absolute;top:100%;left:50%;transform:translateX(-50%);
    border:6px solid transparent;border-top-color:#1f2937;}