@import"https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap";:root{--bg: #f0f0f4;--surface: #ffffff;--surface-soft: #fbfbfd;--surface-muted: #f2f2f6;--border: #e2e2ea;--border-strong: #d0d0da;--text: #1a1a28;--text-muted: #777777;--text-subtle: #aaaaaa;--primary: #3157d4;--primary-soft: #eaf2ff;--primary-border: #cdd8ff;--fixed: #2f6d48;--fixed-soft: #e9f4ee;--fixed-border: #b8dcc8;--warning: #c48116;--warning-soft: #fff4dc;--danger: #c3382b;--danger-soft: #fff0e8;--font: "Inter", system-ui, sans-serif;--shadow-sm: 0 1px 4px rgba(0, 0, 0, .08);--shadow-md: 0 8px 24px rgba(0, 0, 0, .12)}*,*:before,*:after{box-sizing:border-box}html,body,#root{height:100%;margin:0}body{overflow:hidden;color:var(--text);background:var(--bg);font-family:var(--font);font-size:13px;-webkit-font-smoothing:antialiased}button,input,select{font:inherit}button{cursor:pointer}.app-shell{display:flex;height:100%;flex-direction:column;background:var(--bg)}.topbar{display:flex;min-height:56px;align-items:center;gap:8px;padding:0 12px;border-bottom:1px solid var(--border);background:var(--surface);flex-shrink:0}.brand{min-width:176px;flex-shrink:0}.brand strong{display:block;font-size:17px;font-weight:650;letter-spacing:-.01em}.brand span{display:block;margin-top:1px;color:var(--text-muted);font-size:10.5px}.seg{display:inline-flex;gap:2px;padding:2px;border-radius:6px;background:var(--surface-muted)}.seg button{height:26px;padding:0 10px;border:0;border-radius:4px;background:transparent;color:var(--text-muted);font-size:11.5px;font-weight:500}.seg button[data-active=true]{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm)}.toolbar{display:flex;flex-shrink:0;gap:4px;padding:3px;border-radius:7px;background:var(--surface-muted)}.toolbar button,.plain-btn{height:30px;min-width:32px;border:1px solid var(--border);border-radius:5px;background:var(--surface);color:var(--text-muted);font-size:11px}.toolbar button.active{border-color:var(--primary-border);background:var(--primary-soft);color:var(--primary)}.global-fields{display:flex;gap:8px;margin-left:auto;min-width:270px}.global-fields label{min-width:0;flex:1}.global-fields .num-input{width:100%}.global-fields label,.panel label{display:grid;gap:4px;color:var(--text-muted);font-size:10.5px}.num-input{display:flex;height:30px;min-width:86px;overflow:hidden;border:1px solid var(--border);border-radius:5px;background:var(--surface)}.num-input input{width:100%;min-width:0;padding:0 8px;border:0;color:var(--text);font-family:var(--font);font-variant-numeric:tabular-nums;font-size:12px}.num-input span{display:flex;align-items:center;flex-shrink:0;min-width:28px;justify-content:center;padding:0 6px;border-left:1px solid var(--border);background:var(--surface-soft);color:var(--text-subtle);font-size:10px}.global-fields label.num-input,.panel label.num-input{display:flex;gap:0;color:inherit;font-size:inherit}.select-input{width:100%;height:30px;padding:0 7px;border:1px solid var(--border);border-radius:5px;background:var(--surface);color:var(--text);font-size:12px}.add-btn,.solve-btn,.wide-btn{height:32px;border-radius:6px;font-weight:500}.add-btn{border:1px solid var(--border);background:var(--surface);color:var(--text)}.solve-btn{min-width:92px;border:1px solid var(--primary);background:var(--primary);color:#fff;font-weight:650}.plain-btn{padding:0 9px}.derate{display:flex;align-items:center;gap:6px;color:var(--text-subtle);font-size:10px;text-transform:uppercase}.derate strong{color:var(--text);font-family:var(--font);font-variant-numeric:tabular-nums;font-size:12px}.main{display:flex;min-height:0;flex:1}.canvas{position:relative;flex:1;overflow:hidden;background:var(--bg);overscroll-behavior:none;touch-action:none}.grade-line{position:absolute;left:0;right:0;height:1px;background:#0000001a}.grade-label{position:absolute;left:8px;color:var(--text-subtle);font-family:var(--font);font-variant-numeric:tabular-nums;font-size:9.5px}.bank-card{position:absolute;-webkit-user-select:none;user-select:none}.bank-label{position:absolute;top:-21px;left:0;z-index:2;display:flex;align-items:center;gap:5px;white-space:nowrap;cursor:move;pointer-events:auto;text-shadow:0 0 4px var(--surface),0 0 8px var(--surface)}.bank-label strong{font-size:11px;font-weight:600}.bank-label span{color:var(--text-muted);font-family:var(--font);font-variant-numeric:tabular-nums;font-size:9px}.bank-label em{padding:1px 4px;border-radius:3px;font-style:normal;font-size:8.5px;font-weight:600}.bank-label .solve,.bank-label .sets{background:var(--primary-soft);color:var(--primary)}.bank-label .fixed{background:var(--fixed-soft);color:var(--fixed)}.bank-body{position:relative;overflow:visible;border:1.5px solid var(--border-strong);border-radius:4px;box-shadow:var(--shadow-sm);cursor:move;box-sizing:content-box}.bank-body.unsolved{border-style:dashed;border-color:var(--primary-border)}.bank-body.selected{border:2px solid var(--primary);box-shadow:0 0 0 3px #3157d42e,var(--shadow-sm)}.bank-body.bottleneck{border:2px solid var(--warning);box-shadow:0 0 0 4px #c47a122e,var(--shadow-sm)}.duct-svg{display:block}.duct-svg g{cursor:pointer}.drag-dots{position:absolute;top:50%;left:50%;color:#00000029;font-size:12px;line-height:7px;letter-spacing:2px;transform:translate(-50%,-50%);pointer-events:none}.result-badge{position:absolute;top:calc(100% + 5px);left:0;white-space:nowrap;color:var(--text-subtle);font-family:var(--font);font-variant-numeric:tabular-nums;font-size:9px;cursor:pointer}.result-badge span{display:inline-block;padding:1px 7px;border-radius:3px;background:var(--surface-muted);color:var(--text-muted);font-weight:500}.result-badge .solve{background:var(--primary-soft);color:var(--primary)}.result-badge .done,.result-badge .fixed{background:var(--fixed-soft);color:var(--fixed)}.result-badge .pending{background:var(--surface-muted);color:var(--text-muted)}.result-badge .hot{background:var(--warning-soft);color:var(--warning)}.dimension-overlay{position:absolute;inset:0;z-index:5;overflow:visible;pointer-events:none;font-family:var(--font);font-variant-numeric:tabular-nums;font-size:9.5px;fill:var(--primary)}.dimension-overlay rect{fill:var(--surface);stroke:var(--primary);stroke-width:.8}.panel{display:flex;width:336px;flex-direction:column;flex-shrink:0;overflow:hidden;border-left:1px solid var(--border);background:var(--surface)}.panel.empty{align-items:center;justify-content:center;color:var(--text-subtle);text-align:center}.empty-icon{margin-bottom:8px;font-size:40px}.panel-title{padding:12px 16px 11px;border-bottom:1px solid var(--border)}.panel-title span,.panel section h3{margin:0 0 8px;color:var(--text-subtle);font-size:9.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.panel-title input{width:100%;padding:0;border:0;background:transparent;color:var(--text);font-size:18px;font-weight:650;letter-spacing:-.015em}.chips{display:flex;flex-wrap:wrap;gap:4px;margin-top:6px}.chips em{padding:2px 6px;border-radius:4px;background:var(--surface-muted);color:var(--text-muted);font-style:normal;font-size:10.5px}.tabs{display:grid;grid-template-columns:repeat(5,minmax(0,1fr));flex-shrink:0;border-bottom:1px solid var(--border);padding:0 8px}.tabs button{min-width:0;min-height:38px;padding:10px 6px 9px;border:0;border-bottom:2px solid transparent;background:transparent;color:var(--text-subtle);font-size:11px;font-weight:500;text-transform:capitalize}.tabs button[data-active=true]{border-bottom-color:var(--primary);color:var(--text);font-weight:600}.panel-scroll{min-height:0;flex:1;overflow:auto}.panel section{padding:14px 16px;border-bottom:1px solid var(--border)}.panel-breadcrumb{display:flex;align-items:center;gap:8px;padding:11px 16px;border-bottom:1px solid var(--border)}.panel-breadcrumb button{border:0;background:transparent;color:var(--primary)}.duct-rail-header{display:grid;gap:10px;flex-shrink:0;padding:12px 16px 14px;border-bottom:1px solid var(--border)}.duct-rail-top,.rail-section-head{display:flex;align-items:center;justify-content:space-between;gap:10px}.duct-rail-top button{min-width:0;padding:0;overflow:hidden;border:0;background:transparent;color:var(--primary);font-size:12px;text-overflow:ellipsis;white-space:nowrap}.duct-rail-title{display:grid;gap:2px}.duct-rail-title span{color:var(--text-subtle);font-size:9.5px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.duct-rail-title strong{color:var(--text);font-size:22px;font-weight:700;letter-spacing:0}.duct-rail-header .seg{width:100%}.duct-rail-header .seg button{flex:1}.duct-rail-scroll section:last-child{border-bottom:0}.rail-section-head{margin-bottom:10px}.rail-section-head h3{min-width:0;margin:0}.rail-section-head>div{display:flex;align-items:center;flex-shrink:0;gap:6px}.rail-state-badge{display:inline-flex;align-items:center;height:20px;padding:0 6px;border:1px solid var(--border);border-radius:4px;background:var(--surface-muted);color:var(--text-muted);font-size:9.5px;font-weight:650;white-space:nowrap}.rail-state-badge.default{border-color:var(--fixed-border);background:var(--fixed-soft);color:var(--fixed)}.rail-state-badge.override{border-color:var(--warning);background:var(--warning-soft);color:var(--warning)}.rail-state-badge.spare{border-color:var(--border-strong);background:var(--surface-muted);color:var(--text-muted)}.rail-reset{height:22px;padding:0 7px;border:1px solid var(--border);border-radius:4px;background:var(--surface);color:var(--text-muted);font-size:10.5px;font-weight:600}.rail-reset:hover{border-color:var(--primary-border);color:var(--primary)}.rail-field{display:grid;gap:5px;margin-top:10px;color:var(--text-muted);font-size:10.5px}.rail-field:first-of-type{margin-top:0}.rail-field>span,.rail-number-field>span{overflow:hidden;font-weight:600;text-overflow:ellipsis;white-space:nowrap}.rail-field .select-input{height:32px}.rail-catalog-summary{margin-top:12px}.rail-number-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.rail-number-field{display:grid;min-width:0;gap:5px;color:var(--text-muted);font-size:10.5px}.rail-number-field .num-input{width:100%;min-width:0}.bank-duct-rail{display:grid;gap:0}.bank-rail-block+.bank-rail-block{margin-top:16px;padding-top:14px;border-top:1px solid var(--border)}.rail-field-grid{display:grid;grid-template-columns:1fr 1fr;gap:10px}.rail-field-grid .rail-field{margin-top:0}.rail-field-grid .rail-field:nth-child(3){grid-column:1 / -1}.rail-field .num-input{width:100%;min-width:0}.field-row,.gap-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:10px;color:var(--text-muted);font-size:11.5px}.field-row>span{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.field-row .num-input{width:112px;flex-shrink:0}.catalog-summary{display:grid;grid-template-columns:1fr 1fr;gap:6px 10px;margin-top:10px;padding:10px;border:1px solid var(--border);border-radius:7px;background:var(--surface-soft)}.catalog-value{min-width:0;margin:0}.catalog-value span{display:block;color:var(--text-muted);font-size:10px;font-weight:600}.catalog-value strong{display:block;min-width:0;overflow:hidden;color:var(--text);font-size:11px;font-variant-numeric:tabular-nums;text-overflow:ellipsis;white-space:nowrap}.advanced-box{margin-top:12px;padding:10px;border:1px solid var(--border);border-radius:7px;background:var(--surface)}.advanced-box 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span{display:block;margin-bottom:4px;color:var(--primary);font-size:9px;font-weight:600;letter-spacing:.08em;text-transform:uppercase}.result-card strong{color:var(--primary);font-variant-numeric:tabular-nums;font-size:26px;font-weight:700;letter-spacing:-.02em}.wide-btn{width:100%;margin-top:10px;border:1px solid var(--border);background:var(--surface);color:var(--text)}.muted{color:var(--text-subtle);font-size:11px;line-height:1.5}.mixed-note{margin-top:6px;padding:6px 8px;border-radius:6px;background:var(--primary-soft);border:1px solid var(--primary-border);font-size:11px;color:var(--primary);display:flex;flex-wrap:wrap;gap:8px;align-items:center}.mixed-note .inline-check{display:inline-flex;align-items:center;gap:4px;font-size:11px;color:var(--primary)}.mixed-note .link-btn{background:none;border:none;color:var(--primary);padding:0;font-size:11px;cursor:pointer;text-decoration:underline}.empty-canvas{position:absolute;top:50%;left:50%;color:var(--text-subtle);transform:translate(-50%,-50%)}.statusbar{display:flex;height:25px;align-items:center;gap:10px;padding:0 12px;border-top:1px solid var(--border);background:var(--surface);color:var(--text-subtle);font-size:10.5px;flex-shrink:0}.status-dot{width:7px;height:7px;border-radius:50%;background:var(--border-strong)}.status-dot.done{background:var(--fixed)}.status-dot.running{background:var(--warning)}.status-dot.error{background:var(--danger)}.error-text{margin-left:auto;color:var(--danger);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.modal-backdrop{position:fixed;inset:0;z-index:100;display:flex;align-items:center;justify-content:center;background:#00000059}.cross-modal{width:460px;overflow:hidden;border-radius:12px;background:var(--surface);box-shadow:var(--shadow-md)}.cross-modal header{display:flex;align-items:center;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--border)}.cross-modal header strong,.cross-modal header span{display:block}.cross-modal header span{margin-top:2px;color:var(--text-subtle);font-size:11px}.cross-modal header button{width:28px;height:28px;border:0;border-radius:5px;background:var(--surface-muted)}.cross-content{display:grid;grid-template-columns:200px 1fr;gap:14px;padding:18px}.cross-content h3{margin:0 0 8px;color:var(--text-subtle);font-size:10px;letter-spacing:.08em;text-transform:uppercase}.cross-content p{margin:0 0 8px;color:var(--text-muted);font-size:11.5px}.risk-warning-backdrop{z-index:200;padding:18px;background:#14142094}.risk-warning-modal{width:min(520px,100%);overflow:hidden;border:1px solid rgba(196,129,22,.38);border-radius:10px;background:var(--surface);box-shadow:var(--shadow-md)}.risk-warning-modal header{display:flex;align-items:center;gap:12px;padding:16px 18px;border-bottom:1px solid var(--border);background:var(--warning-soft)}.risk-warning-modal header strong,.risk-warning-modal header span{display:block}.risk-warning-modal header strong{color:var(--text);font-size:15px}.risk-warning-modal header span{margin-top:2px;color:var(--warning);font-size:11px;font-weight:600}.risk-warning-mark{display:inline-flex;width:28px;height:28px;align-items:center;justify-content:center;border-radius:50%;background:var(--warning);color:var(--surface);font-weight:800}.risk-warning-content{padding:18px}.risk-warning-content p{margin:0 0 16px;color:var(--text-muted);font-size:12.5px;line-height:1.55}.risk-warning-check{display:flex;align-items:flex-start;gap:9px;padding:12px;border:1px solid var(--border);border-radius:8px;background:var(--surface-soft);color:var(--text);font-size:12px;line-height:1.35}.risk-warning-check input{width:15px;height:15px;flex:0 0 auto;margin-top:1px}.risk-warning-accept{width:100%;height:36px;margin-top:14px;border:0;border-radius:6px;background:var(--danger);color:#fff;font-size:12px;font-weight:700}.risk-warning-accept:disabled{cursor:not-allowed;background:var(--border-strong);color:var(--text-muted)}.fit-fail{color:var(--danger)}@media(max-width:900px){.topbar{flex-wrap:wrap;align-content:center;min-height:92px;padding:8px 10px}.brand{min-width:150px}.global-fields{order:3;min-width:220px;margin-left:0}.panel{width:320px}.tabs{padding:0 6px}.tabs button{padding-inline:4px}}