:root{--bg:#eef2f6;--surface:#fff;--surface-soft:#f8fafc;--ink:#17202a;--muted:#667085;--line:#d9dee7;--line-strong:#c6cedb;--primary:#2563eb;--primary-soft:#e8f0ff;--green:#168a5b;--red:#d64545;--amber:#b7791f;--nav:#101828;--nav-muted:#98a2b3;--shadow:0 10px 30px #11182714;color:var(--ink);background:var(--bg);font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,Segoe UI,Microsoft YaHei,Arial,sans-serif}*{box-sizing:border-box}body{min-width:320px;margin:0}button,input{font:inherit}button{-webkit-tap-highlight-color:transparent}button:focus-visible,input:focus-visible,canvas:focus-visible{outline-offset:2px;outline:3px solid #2563eb52}h1,h2,p{margin:0}#root{min-height:100vh}.product-shell{grid-template-columns:248px minmax(0,1fr);min-height:100vh;display:grid}.tool-nav{background:var(--nav);color:#fff;height:100vh;padding:18px;position:sticky;top:0}.brand-block{border-bottom:1px solid #ffffff1a;align-items:center;gap:12px;padding:6px 4px 20px;display:flex}.brand-mark{width:42px;height:42px;color:var(--nav);background:#fff;border-radius:8px;place-items:center;font-size:13px;font-weight:800;display:grid}.brand-title{font-size:15px;font-weight:750;line-height:1.2}.brand-subtitle{color:var(--nav-muted);margin-top:3px;font-size:12px}.tool-list{gap:8px;margin-top:18px;display:grid}.tool-item{color:#fff;text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:8px;width:100%;min-height:58px;padding:10px 12px;text-decoration:none;display:grid}.tool-item.active{background:#ffffff1a;border-color:#ffffff24}.tool-item:disabled{color:#ffffff73;cursor:not-allowed}.tool-item-title{font-size:14px;font-weight:700;line-height:1.25}.tool-item-meta{color:var(--nav-muted);margin-top:3px;font-size:12px}.workspace{min-width:0;padding:24px}.topbar{justify-content:space-between;align-items:flex-end;gap:20px;max-width:1320px;margin:0 auto 16px;display:flex}.title-block{max-width:760px}.eyebrow{color:var(--primary);margin:0 0 6px;font-size:13px;font-weight:800}h1{letter-spacing:0;margin:0 0 6px;font-size:28px;line-height:1.2}h2{margin:0 0 12px;font-size:16px;line-height:1.3}.subtitle,.panel-head p{color:var(--muted);font-size:14px;line-height:1.55}.actions{flex-wrap:wrap;justify-content:flex-end;gap:8px;display:flex}.segmented{border:1px solid var(--line-strong);background:#fff;border-radius:8px;grid-template-columns:repeat(2,minmax(0,1fr));min-height:44px;display:inline-grid;overflow:hidden}.segmented button{border:0;border-right:1px solid var(--line);min-width:106px;color:var(--muted);cursor:pointer;background:0 0;padding:0 12px}.segmented button:last-child{border-right:0}.segmented button.active{background:var(--primary-soft);color:var(--primary);font-weight:700}.btn{border:1px solid var(--line-strong);min-height:44px;color:var(--ink);cursor:pointer;background:#fff;border-radius:8px;padding:0 14px;transition:border-color .16s,background .16s,transform .16s}.btn:hover{border-color:#aab5c4}.btn:active{transform:translateY(1px)}.btn.primary{border-color:var(--primary);background:var(--primary);color:#fff}.summary-strip,.layout{max-width:1320px;margin-left:auto;margin-right:auto}.summary-strip{grid-template-columns:repeat(4,minmax(0,1fr));gap:12px;margin-bottom:16px;display:grid}.layout{grid-template-columns:minmax(0,1fr) 360px;align-items:start;gap:18px;display:grid}.panel{background:var(--surface);border:1px solid var(--line);box-shadow:var(--shadow);border-radius:8px}.chart-panel{padding:16px}.panel-head{justify-content:space-between;align-items:flex-start;gap:16px;margin-bottom:12px;display:flex}.panel-head h2{margin-bottom:4px}.selected-chip{border:1px solid var(--line);background:var(--surface-soft);min-width:max-content;color:var(--muted);border-radius:999px;padding:7px 10px;font-size:12px;line-height:1}.chart-wrap{border:1px solid var(--line);cursor:crosshair;touch-action:none;background:#fbfcfe;border-radius:8px;width:100%;height:min(560px,100vh - 260px);min-height:360px;position:relative;overflow:hidden}canvas{width:100%;height:100%;display:block}.hint{color:var(--muted);justify-content:space-between;gap:12px;margin-top:10px;font-size:13px;line-height:1.5;display:flex}.side{gap:14px;display:grid}.section{padding:16px}.result-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:10px;display:grid}.metric{border:1px solid var(--line);background:#fff;border-radius:8px;min-height:78px;padding:10px}.metric .label{color:var(--muted);margin-bottom:6px;font-size:12px;line-height:1.3}.metric .value{color:var(--ink);font-variant-numeric:tabular-nums;font-size:22px;font-weight:750;line-height:1.2}.metric .sub{color:var(--muted);margin-top:5px;font-size:12px;line-height:1.35}.metric.good .value{color:var(--green)}.metric.warn .value{color:var(--amber)}.metric.bad .value{color:var(--red)}.field{gap:7px;margin-bottom:12px;display:grid}label{color:var(--muted);font-size:13px;line-height:1.35}input[type=number],input[type=range]{width:100%}input[type=number]{border:1px solid var(--line);min-height:42px;color:var(--ink);background:#fff;border-radius:8px;padding:0 10px}input[type=range]{accent-color:var(--primary)}.inline-fields{grid-template-columns:1fr 1fr;gap:10px;display:grid}.table-wrap{border:1px solid var(--line);border-radius:8px;max-height:270px;overflow:auto}table{border-collapse:collapse;width:100%;font-size:13px}th,td{border-bottom:1px solid var(--line);text-align:right;white-space:nowrap;padding:8px 9px}th:first-child,td:first-child{text-align:left}th{z-index:1;color:var(--muted);background:#f8fafc;font-weight:650;position:sticky;top:0}tr:last-child td{border-bottom:0}.note{color:var(--muted);margin:10px 0 0;font-size:13px;line-height:1.55}.formula{color:#344054;background:#f2f4f7;border-radius:6px;padding:8px;font-family:Consolas,SFMono-Regular,monospace;font-size:12px;line-height:1.45;overflow-x:auto}@media (width<=1180px){.product-shell{grid-template-columns:1fr}.tool-nav{height:auto;padding:12px 16px;position:static}.brand-block{padding-bottom:12px}.tool-list{grid-auto-columns:minmax(156px,1fr);grid-auto-flow:column;margin-top:12px;padding-bottom:2px;overflow-x:auto}.tool-item{min-height:54px}.workspace{padding:20px}}@media (width<=980px){.topbar{flex-direction:column;align-items:stretch}.actions{justify-content:flex-start}.summary-strip{grid-template-columns:repeat(2,minmax(0,1fr))}.layout{grid-template-columns:1fr}.chart-wrap{height:min(500px,100vh - 300px)}.side{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (width<=680px){.tool-nav{padding:10px 12px}.brand-mark{width:36px;height:36px}.workspace{padding:14px}h1{font-size:24px}.summary-strip,.side{grid-template-columns:1fr}.actions{grid-template-columns:1fr;display:grid}.segmented{width:100%}.btn{min-width:0;padding:0 8px}.panel-head{flex-direction:column;align-items:stretch}.selected-chip{width:fit-content}.chart-wrap{height:min(420px,100vh - 280px);min-height:320px}.hint{flex-direction:column}.inline-fields,.result-grid{grid-template-columns:1fr}}