:root{--bg-app: #f0f2f5;--bg-surface: #ffffff;--bg-input: #f8f9fa;--border-light: #e1e4e8;--border-strong: #ced4da;--border-focus: #80bdff;--text-primary: #212529;--text-secondary: #6c757d;--text-label: #495057;--brand-primary: #0056b3;--brand-success: #28a745;--brand-warning: #ffc107;--brand-danger: #dc3545;--header-height: 48px;--sidebar-width: clamp(450px, 35vw, 600px);--space-xs: 4px;--space-sm: 8px;--space-md: 16px;--space-lg: 24px;--font-ui: "Segoe UI", system-ui, -apple-system, sans-serif;--font-mono: "Consolas", "Monaco", monospace;--fs-xs: clamp(20px, 1.5vw, 24px);--fs-sm: clamp(22px, 1.7vw, 26px);--fs-base: clamp(24px, 1.9vw, 28px);--fs-lg: clamp(28px, 2.2vw, 34px);--fs-xl: clamp(34px, 2.6vw, 44px);--radius-sm: 3px;--radius-md: 6px;--shadow-card: 0 1px 3px rgba(0, 0, 0, .08);--shadow-float: 0 4px 12px rgba(0, 0, 0, .15)}*{box-sizing:border-box}body{margin:0;padding:0;font-family:var(--font-ui);font-size:var(--fs-base);color:var(--text-primary);background-color:var(--bg-app);min-height:100vh;overflow-y:scroll;overflow-x:hidden}.app-shell{display:flex;flex-direction:column;min-height:100vh}.app-header{flex:0 0 var(--header-height);background-color:#343a40;display:flex;align-items:center;padding:0 var(--space-md);color:#fff;justify-content:space-between;box-shadow:0 1px 4px #0003;z-index:100;position:sticky;top:0}.nav-tabs{display:flex;gap:2px;height:100%;align-items:flex-end}.tab-btn{padding:0 var(--space-lg);height:100%;display:flex;align-items:center;color:#adb5bd;cursor:pointer;background:transparent;border-bottom:3px solid transparent;font-weight:600;font-size:var(--fs-sm);text-transform:uppercase;letter-spacing:.5px;transition:all .2s}.tab-btn:hover{color:#fff;background:#ffffff0d}.tab-btn.active{color:#fff;border-bottom-color:var(--brand-success);background:#ffffff1a}.workspace-grid{display:none;grid-template-columns:1fr var(--sidebar-width);grid-template-rows:auto;align-items:start;width:100%;min-height:calc(100vh - var(--header-height));position:relative;transition:grid-template-columns .3s ease}.workspace-grid.active{display:grid}.stage-container{padding:var(--space-md);display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;flex:1}.stage-view{display:none;flex-direction:column;gap:var(--space-md);width:100%}.stage-view.active{display:flex}.stage{display:contents;padding:var(--space-md);display:flex;flex-direction:column;gap:var(--space-md);min-width:0}.controls{background:var(--bg-surface);border-left:1px solid var(--border-light);display:flex;flex-direction:column;position:sticky;top:var(--header-height);height:calc(100vh - var(--header-height));overflow:hidden;z-index:10}.controls-header{padding:var(--space-sm) var(--space-md);border-bottom:1px solid var(--border-light);background:#f8f9fa;display:flex;align-items:center;flex-shrink:0}.logo-wrapper{display:flex;align-items:center;gap:10px;margin-left:auto}.controls-title{margin:0;font-size:var(--fs-base);font-weight:700;color:var(--brand-primary);text-transform:uppercase;letter-spacing:.5px}.controls-body{flex:1;overflow-y:auto;overflow-x:hidden;padding:var(--space-md);scrollbar-width:thin;scrollbar-color:var(--border-strong) transparent}.controls-submit{padding:var(--space-md);border-top:1px solid var(--border-light);background:#f8f9fa;display:flex;flex-direction:column;gap:var(--space-sm);flex-shrink:0}.controls-content{display:none}.controls-content.active{display:block}@media (max-width: 1200px){#tab-calc.active,#tab-modes.active{display:block!important}.controls{position:static;width:100%!important;height:auto;overflow-y:visible;border-left:none;border-top:1px solid var(--border-light)}}@media (max-width: 768px){:root{--sidebar-width: 100%;--fs-base: 16px;--header-height: 44px}.controls-submit{position:sticky;bottom:0;z-index:20}}.control-group{border:1px solid var(--border-light);border-radius:var(--radius-sm);margin:0 0 var(--space-md) 0;padding:var(--space-sm) var(--space-sm) var(--space-sm)}.control-group legend{font-size:var(--fs-xs);font-weight:700;color:var(--text-secondary);text-transform:uppercase;padding:0 4px}.form-grid{display:grid;grid-template-columns:1fr;gap:8px}.form-row{display:grid;grid-template-columns:180px 1fr;align-items:center;gap:12px}.form-label{font-size:var(--fs-sm);font-weight:600;color:var(--text-label);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.form-input,.form-select{width:100%;padding:2px 8px;font-family:var(--font-ui);font-size:var(--fs-sm);color:var(--text-primary);background:var(--bg-input);border:1px solid var(--border-strong);border-radius:var(--radius-sm);transition:border-color .15s;height:44px;display:flex;align-items:center;line-height:normal}.form-select{padding-right:2px;cursor:pointer;font-weight:600}.form-input:focus,.form-select:focus{outline:none;border-color:var(--border-focus);background:#fff}.form-input[readonly]{background:#e9ecef;color:var(--text-secondary)}.input-file-wrapper{display:flex;flex-direction:column;gap:4px;align-items:flex-start}.link-action{font-size:var(--fs-xs);color:var(--brand-primary);text-decoration:none;margin-left:auto;flex-shrink:0;white-space:nowrap}.logo-btn{height:40px;cursor:pointer;border:1px solid #ced4da;border-radius:var(--radius-sm);background:#fff;box-shadow:0 2px 4px #0000001a;transition:all .2s}.logo-btn:hover{box-shadow:0 4px 8px #00000026;transform:translateY(-1px);border-color:var(--brand-primary)}input[type=file]::file-selector-button{font-family:var(--font-ui);font-size:var(--fs-sm);font-weight:600;color:#495057;background-color:#e9ecef;padding:6px 12px;border:1px solid #ced4da;border-radius:var(--radius-sm);cursor:pointer;margin-right:10px;box-shadow:0 2px 4px #0000001a;transition:all .2s}input[type=file]::file-selector-button:hover{background-color:#dee2e6;box-shadow:0 3px 6px #00000026;transform:translateY(-1px)}input[type=file]{font-size:18px}.curve-grid{display:grid;gap:6px}.curve-row{display:grid;grid-template-columns:120px 1fr;align-items:center;gap:8px}.curve-row input{font-family:var(--font-mono);font-size:var(--fs-base);letter-spacing:-.5px;height:40px}.btn{display:inline-flex;justify-content:center;align-items:center;padding:8px 16px;font-weight:600;font-size:var(--fs-sm);text-transform:uppercase;border:none;border-radius:var(--radius-sm);cursor:pointer;transition:filter .2s;width:100%}.btn:hover{filter:brightness(110%)}.btn-primary{background-color:var(--brand-primary);color:#fff}.btn-success{background-color:var(--brand-success);color:#fff}.btn-secondary{background-color:var(--text-secondary);color:#fff}.btn-warning{background-color:var(--brand-warning);color:#212529}.btn-danger{background-color:var(--brand-danger);color:#fff}.btn-outline{background:transparent;border:1px solid var(--border-strong);color:var(--text-primary)}.modal-overlay{display:none;position:fixed;top:0;left:0;width:100%;height:100%;background:#00000080;z-index:1000;align-items:center;justify-content:center}.modal-box{background:#fff;padding:var(--space-lg);border-radius:var(--radius-md);box-shadow:var(--shadow-float);width:400px;max-width:90vw}@media (max-width: 768px){.form-row{grid-template-columns:1fr;gap:2px;margin-bottom:8px}}.chart-card{background:var(--bg-surface);padding:var(--space-sm);flex:1;display:flex;flex-direction:column;position:relative;min-height:500px}.chart-top{min-height:1000px}.chart-bottom{min-height:500px}.chart-instance{flex:1;width:100%;height:100%}.math-panel{background:var(--bg-surface);padding:var(--space-md);font-family:var(--font-mono);font-size:24px!important;color:var(--text-primary);border:1px solid var(--border-light);border-radius:var(--radius-md);margin-top:var(--space-md)}.math-panel *{font-size:24px!important}.math-header{display:flex;justify-content:space-between;margin-bottom:16px;padding-bottom:var(--space-xs);border-bottom:1px dashed var(--border-light);color:var(--brand-success);font-weight:700}.math-results-header{font-family:var(--font-ui);font-size:28px!important;font-weight:700;text-transform:uppercase;color:var(--brand-primary);margin-bottom:12px;letter-spacing:.5px}.math-op-row{display:flex;flex-wrap:wrap;align-items:center;gap:24px;font-family:var(--font-ui);font-size:18px;color:#333;line-height:1.6}.math-op-item{display:flex;align-items:center}.math-op-val{font-weight:700;color:#000;margin:0 4px}.math-sep{color:#ccc;font-weight:300;font-size:1.2em;display:inline-block;margin:0 4px}.network-block{margin-top:10px;margin-bottom:10px;line-height:1.5;color:#555}.network-title{font-weight:700;color:#666;font-size:20px!important;text-transform:uppercase;margin-right:8px}.network-formula{font-family:Times New Roman,serif;font-style:italic;font-size:26px!important;color:#333}.network-coeff-label{font-weight:600;margin-right:6px}.network-coeff-val{font-weight:700;color:#000}.coeff-grid{margin-top:var(--space-sm);overflow-x:auto}.coeff-table{width:auto;min-width:650px;border-collapse:collapse;font-size:24px;font-family:var(--font-mono)}.coeff-table th,.coeff-table td{border:1px solid var(--border-strong);padding:6px 10px;text-align:right}.coeff-table th{background:#e9ecef;font-weight:700;text-align:center;color:var(--text-primary)}.coeff-table td:first-child{text-align:left;background:#f8f9fa;width:100px;font-weight:700}.math-accuracy{font-size:.9em;color:#666;margin-top:5px;font-style:italic;border-top:1px solid #eee;padding-top:4px}@media (max-width: 768px){.chart-card{min-height:300px}}.coeff-input-grid{display:grid;grid-template-columns:140px repeat(4,1fr) 140px;gap:8px;align-items:center;margin-top:10px}.coeff-input-header{font-size:var(--fs-xs);font-weight:700;color:var(--text-secondary);text-align:center;background:#f1f3f5;padding:4px;border-radius:var(--radius-sm)}.coeff-input-label{font-size:var(--fs-sm);font-weight:600;color:var(--text-label)}.form-input.mini{height:40px;padding:6px 12px;font-size:var(--fs-sm);text-align:center}.form-select-disabled{height:40px;display:flex;align-items:center;justify-content:center;background:#f8f9fa;border:1px solid #ddd;border-radius:var(--radius-sm);color:#666;font-size:var(--fs-xs);font-weight:700}.archive-wrapper{background:#fff;border-radius:var(--radius-md);box-shadow:var(--shadow-card);overflow:hidden}.archive-toolbar{padding:var(--space-sm);background:#f8f9fa;border-bottom:1px solid var(--border-light);display:flex;gap:var(--space-sm);flex-wrap:wrap}.archive-table{width:auto;min-width:100%;border-collapse:collapse;font-size:var(--fs-sm);table-layout:auto}.archive-table th,.archive-table td{padding:8px 12px;border-bottom:1px solid var(--border-light);text-align:center;white-space:nowrap;vertical-align:top}.archive-table th:nth-child(16),.archive-table td:nth-child(16),.archive-table th:nth-child(18),.archive-table td:nth-child(18){text-align:right}.archive-table th:nth-child(18),.archive-table td:nth-child(18){white-space:normal!important;min-width:300px;max-width:600px;word-break:break-word}.archive-table th:nth-child(19),.archive-table td:nth-child(19){text-align:left;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;min-width:150px;max-width:250px}.archive-table th{background:#e9ecef;font-weight:700;color:var(--text-primary)}.archive-table tr:hover td{background:#f1f3f5;cursor:pointer}#tab-archive{display:none;flex-direction:column;padding:var(--space-md)}#tab-archive.active{display:block}#tab-digitizer.workspace-view{display:none;flex-direction:column;height:calc(100vh - var(--header-height));overflow:hidden;position:relative}#tab-digitizer.active{display:flex}.digitizer-toolbar{padding:var(--space-sm) var(--space-md);background:#f8f9fa;border-bottom:1px solid var(--border-light);display:flex;justify-content:space-between;align-items:center;gap:15px;z-index:20;flex-shrink:0}.digitizer-container{flex:1;position:relative;background:#333;overflow:hidden;cursor:grab;display:flex}.radio-label{display:flex;align-items:center;gap:4px;cursor:pointer;font-size:14px;font-weight:600;color:var(--text-secondary);background:#fff;padding:4px 8px;border:1px solid var(--border-light);border-radius:4px;transition:all .2s}.radio-label input{display:none}.radio-label:has(input:checked){color:#fff;border-color:transparent}.radio-label:has(input[value=QH]:checked){background:#ff4d4d}.radio-label:has(input[value=QP]:checked){background:#2ecc71}.radio-label:has(input[value=QN]:checked){background:#3498db}.radio-label:has(input[value=QE]:checked){background:#f39c12}.digi-overlay-controls{position:absolute;top:10px;left:10px;width:300px;max-height:calc(100% - 20px);overflow-y:auto;background:#fffffff2;border-radius:8px;box-shadow:0 4px 12px #0003;padding:10px;display:flex;flex-direction:column;gap:10px;z-index:100}#digiCanvas{display:block;width:100%;height:100%}.digi-panel{position:absolute;background:#fff;margin:10px;padding:12px;border-radius:6px;box-shadow:0 4px 12px #0003;z-index:10}.top-left{top:50px;left:20px;width:380px}.top-right{top:50px;right:20px;width:300px;max-height:80%;overflow-y:auto}.digi-panel h3{margin:0 0 10px;font-size:14px;text-transform:uppercase;color:#555;border-bottom:2px solid #eee;padding-bottom:5px}.calibration-row{display:flex;align-items:center;gap:8px;margin-bottom:8px}.calibration-row label{font-weight:700;font-size:14px;width:25px;color:#444}.calibration-row input{flex:1;padding:4px;border:1px solid #ddd;border-radius:3px;font-family:var(--font-mono);font-size:14px}.calibration-row button{padding:4px 10px;background:#007bff;color:#fff;border:none;border-radius:3px;cursor:pointer;font-size:12px;font-weight:700;min-width:80px;font-family:var(--font-ui)}.calibration-row button:disabled{background:#ccc;cursor:not-allowed}.mode-selector{display:flex;gap:4px;margin-bottom:5px}.mode-btn-label{flex:1;text-align:center;padding:6px;border:1px solid #ddd;background:#eee;cursor:pointer;font-size:13px;border-radius:4px;font-weight:700;transition:all .2s}.mode-selector input:checked+.mode-btn-label{color:#fff;border-color:transparent}.mode-selector input[value=QH]:checked+.mode-btn-label{background:#ff4d4d}.mode-selector input[value=QP]:checked+.mode-btn-label{background:#2ecc71}.mode-selector input[value=QN]:checked+.mode-btn-label{background:#3498db}.mode-selector input[value=QE]:checked+.mode-btn-label{background:#f39c12}#digiPointsList{max-height:300px;overflow-y:auto;font-size:12px}.points-group-header{padding:6px;font-weight:700;margin-top:5px;margin-bottom:5px}.point-row{display:flex;justify-content:space-between;padding:4px 8px;background:#fcfcfc;border-bottom:1px solid #eee}.point-row:hover{background:#f0f0f0}.export-area{margin-top:auto;padding:15px;background:#343a40;color:#fff}.mini-input{width:100%;height:38px;padding:6px 12px;margin-bottom:5px;border:1px solid #ccc;border-radius:4px;font-family:Consolas,Monaco,monospace!important;font-size:var(--fs-base)}.btn-sm{padding:6px 12px;font-size:var(--fs-sm);min-width:auto;font-family:Segoe UI,system-ui,sans-serif!important}.spinner{width:50px;height:50px;border:5px solid #f3f3f3;border-top:5px solid var(--brand-primary);border-radius:50%;animation:spin 1s linear infinite;display:inline-block}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}