@import"https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500&display=swap";:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;--paper: #f7f8f5;--surface: #ffffff;--ink: #24362f;--muted: #627066;--line: #e1e6df;--brand: #23745c;--brand-dark: #18533f;--accent: #23745c;--accent-soft: #e7f1e9;--danger: #ac3d36;--radius: 14px;--mono: "IBM Plex Mono", Consolas, monospace;--sidebar-width: 228px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-padding-top:24px}body{background:var(--paper);color:var(--ink);font-size:14px;line-height:1.5}html,body,#root{min-height:100%;width:100%}a{color:inherit;text-decoration:none}svg{flex-shrink:0;vertical-align:middle}h1,h2,h3{font-family:inherit;font-weight:650;line-height:1.3}h1{font-size:clamp(26px,2.5vw,32px);letter-spacing:-.8px}h2{font-size:20px;letter-spacing:-.6px}h3{font-size:16px;letter-spacing:-.25px}p{line-height:1.7}button,input,textarea,select{font:inherit}button,.button-link{min-height:44px;padding:10px 18px;border:1px solid transparent;border-radius:8px;background:var(--brand);color:#fff;font-weight:600;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:9px;line-height:1.4;transition:background .16s,border-color .16s,box-shadow .16s}button:hover,.button-link:hover{background:var(--brand-dark)}button:disabled{opacity:.5;cursor:not-allowed}button:focus-visible,a:focus-visible,summary:focus-visible{outline:3px solid #4d9d7f;outline-offset:3px}input,textarea,select{width:100%;min-height:46px;padding:11px 13px;color:var(--ink);background:#fff;border:1px solid #cfd8cf;border-radius:8px;transition:border-color .15s,box-shadow .15s}input::placeholder,textarea::placeholder{color:#646f67}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 3px #23745c18}input[aria-invalid=true],textarea[aria-invalid=true]{border-color:var(--danger)}input[type=search]::-webkit-search-cancel-button{display:none}textarea{resize:vertical;min-height:115px}label{display:block;font-weight:600;font-size:13px;margin-bottom:8px}code{font-family:var(--mono);background:#edf1eb;border-radius:4px;padding:2px 5px;font-size:.9em;overflow-wrap:anywhere}.button-secondary{background:#fff;color:var(--ink);border-color:#d9e1d7}.button-secondary:hover{background:#f0f4ef;border-color:#b5c4b7}.button-small{min-height:36px;padding:7px 11px;font-size:12px}.button-icon{padding:8px;min-height:40px;width:40px;background:transparent;color:var(--muted)}.button-icon:hover{background:#eaf0e8}.button-row{display:flex;flex-wrap:wrap;gap:10px;margin-top:22px;align-items:center}.button-row .button-primary{flex:1}.app-shell{min-height:100vh;padding-left:var(--sidebar-width)}.sidebar{position:fixed;inset:0 auto 0 0;z-index:40;width:var(--sidebar-width);background:#fcfdfb;border-right:1px solid var(--line);padding:30px 16px 18px;display:flex;flex-direction:column;overflow-y:auto}.brand{display:block;margin:0 12px 42px;font-family:inherit;font-size:20px;font-weight:800;letter-spacing:-.6px}.navbar-links{list-style:none;display:grid;gap:5px;margin-top:12px}.nav-link{display:flex;align-items:center;gap:12px;padding:12px 14px;min-height:45px;font-size:13px;font-weight:500;color:#617067;border-radius:7px;transition:background .15s,color .15s}.nav-link:hover{background:#f0f4ed;color:var(--brand)}.nav-link.active{color:#1f6a50;background:#e8f0e5;font-weight:650}.sidebar-bottom{margin-top:auto;padding-top:35px}.calculator-link{margin:0}.calculator-link>svg:last-child{margin-left:auto}.topbar{height:72px;background:#fcfdfb;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50;padding:0 38px;display:none;align-items:center;justify-content:space-between;gap:16px}.navbar-toggle,.mobile-brand,.navigation-backdrop{display:none}.app-main{max-width:1310px;padding:36px 38px 0;margin:0 auto;min-height:100vh;display:flex;flex-direction:column}.app-main:focus{outline:none}.page-heading{margin-bottom:22px}.page-heading>p{color:var(--muted);margin-top:10px;max-width:690px}.landing{padding-bottom:30px}.home-heading{display:flex;justify-content:space-between;align-items:center;gap:20px}.home-heading h1{font-size:clamp(26px,2.45vw,33px)}.section-heading{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:19px}.search-field{display:flex;align-items:center;background:#fff;padding-left:12px;border:1px solid #dce3d7;border-radius:8px;color:#647062;width:min(270px,100%)}.search-field:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px #23745c18}.search-field input{border:0;box-shadow:none;outline:none;min-width:0;min-height:42px;background:transparent;font-size:12px;padding:10px}.search-field .button-icon{min-height:34px;width:34px;margin-right:3px}.module-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.module-card{display:grid;grid-template-columns:22px minmax(0,1fr) 16px;align-items:start;gap:16px;background:#fff;border:1px solid var(--line);border-radius:8px;padding:22px;min-height:116px;transition:border-color .18s}.module-card:hover{border-color:#a3bda6}.module-icon{color:var(--muted);margin-top:2px}.module-card h2{font-size:17px;letter-spacing:-.3px}.module-card-copy{min-width:0}.module-arrow{color:var(--muted);margin-top:4px}.module-card p{color:#637066;font-size:13px;line-height:1.65;margin-top:6px}.search-empty,.not-found{padding:60px 20px;text-align:center;color:var(--muted);display:flex;flex-direction:column;align-items:center;gap:12px}.search-empty h3,.not-found h1{color:var(--ink)}.tool-page{padding-bottom:35px;min-width:0}.workspace-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.1fr);gap:22px;align-items:start}.panel{background:#fff;border:1px solid var(--line);border-radius:8px;padding:24px;min-width:0}.panel-header{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:21px}.panel-header h2{font-size:17px;min-width:0;overflow-wrap:anywhere}.field-hint{color:var(--muted);font-size:12px;margin-top:9px;line-height:1.65}.field-group+.field-group{margin-top:21px}.math-input{font-family:var(--mono);font-size:14px}.empty-state{display:flex;flex-direction:column;align-items:flex-start;justify-content:flex-start;min-height:150px}.empty-state p{font-size:12px;color:#636f63}.result-panel{min-height:240px}.result-value{font-family:var(--mono);font-size:24px;color:var(--brand);overflow-wrap:anywhere;background:#f0f6ee;border:1px solid #e0ebdb;border-radius:8px;padding:19px;margin-top:10px}.result-label{color:var(--muted);font-size:12px;margin-bottom:10px}.result-summary{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;margin-bottom:20px}.result-stat{padding:15px;border:1px solid #e1e8dc;background:#f7f9f4;border-radius:8px}.result-stat span{display:block;color:var(--muted);font-size:11px;margin-bottom:6px}.result-stat strong{font-family:var(--mono);font-size:23px;font-weight:500;color:var(--brand)}.result-stat small{font-size:11px;margin-left:4px;color:var(--muted)}.result-section+.result-section{margin-top:23px}.result-section h3{font-size:13px;margin-bottom:10px}.ui-error{display:flex;align-items:flex-start;gap:9px;margin-top:17px;padding:12px;background:#fdf0ee;color:var(--danger);border:1px solid #f2d5cf;border-radius:8px;font-size:12px;line-height:1.6}.ui-error svg{margin-top:1px}table{width:100%;border-collapse:collapse;font-size:12px}th,td{padding:12px 14px;border-bottom:1px solid #e8ede4;text-align:left;vertical-align:middle}th{color:#60715e;font-weight:550;background:#f3f6ee}thead th{font-size:10px;letter-spacing:.3px}tbody tr:last-child td,tbody tr:last-child th{border-bottom:0}tbody tr:hover td{background:#f8faf6}.table-wrap{overflow-x:auto;border:1px solid #e2e8dc;border-radius:8px}.table-wrap:focus-visible{outline:3px solid #4d9d7f;outline-offset:3px}.table-wrap table{min-width:320px}.matrix-table td{text-align:center;font-family:var(--mono);min-width:65px}.reference-section{margin-top:28px}.reference-section>.section-heading{margin-bottom:17px}.reference-details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-top:12px}.reference-details summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;padding:17px 20px;font-weight:600;list-style:none}.reference-details summary::-webkit-details-marker{display:none}.reference-details summary svg{transition:transform .2s}.reference-details[open] summary svg{transform:rotate(90deg)}.reference-details>div{padding:0 20px 20px}.equations-reference-list{list-style:none;display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px}.equations-reference-item{font-size:12px;background:#f5f8f1;border:1px solid #e5ebdf;border-radius:6px;padding:11px;overflow-wrap:anywhere}.equations-reference-item strong{font-family:var(--mono);color:var(--brand)}.variables-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(100px,1fr));gap:12px;margin-top:17px}.formula-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}.formula-card{min-width:0;padding:17px;background:#fff;border:1px solid var(--line);color:var(--ink);display:flex;flex-direction:column;align-items:flex-start;text-align:left;gap:12px;border-radius:9px;min-height:120px;font-weight:400}.formula-card:hover{background:#f0f6ee;border-color:#a9c39f}.formula-card strong{font-size:12px;font-weight:600}.formula-card .formula-display{font-size:14px;width:100%;overflow-x:auto}.formula-card>span:last-child{font-size:10px;color:#547453;margin-top:auto}.dimension-controls{display:flex;gap:12px;align-items:flex-end;margin-bottom:23px}.dimension-controls .field-group{flex:1;margin-top:0}.dimension-times{margin-bottom:12px;color:#63705b}.matrix-input-scroll{overflow:auto;max-height:440px;padding:4px}.matrix-input-grid{display:grid;gap:7px;width:max-content;margin:0 auto;border-left:2px solid #91ab85;border-right:2px solid #91ab85;padding:10px;border-radius:4px}.matrix-input-grid input{width:62px;min-width:62px;height:46px;text-align:center;font-family:var(--mono);padding:5px}.chart-wrap{height:310px;position:relative;margin-top:20px}.chart-panel{margin-top:22px}.truth-table td,.truth-table th{text-align:center}.boolean-badge{padding:3px 9px;border-radius:5px;font-family:var(--mono);font-size:11px}.boolean-true{color:#397043;background:#e7f2e4}.boolean-false{color:#88663b;background:#f8efdf}.logic-output{display:grid;gap:22px}.operator-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px}.operator-grid>div{background:#f6f8f3;border:1px solid var(--line);border-radius:7px;padding:13px}.operator-grid code{display:block;background:transparent;padding:0;margin-bottom:5px}.operator-grid p{font-size:11px;color:var(--muted)}.periodic-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(85px,1fr));gap:8px}.element-card{border:1px solid #dce6d7;background:#fff;padding:11px;border-radius:8px;display:flex;flex-direction:column;min-height:110px}.element-number{font-family:var(--mono);font-size:10px;color:#617159}.element-symbol{font-family:Manrope,sans-serif;font-size:24px;font-weight:650;color:var(--brand);margin:3px 0}.element-name{color:#64705c;font-size:10px;overflow-wrap:anywhere}.element-mass{font-family:var(--mono);color:#65705d;font-size:10px;margin-top:auto;padding-top:5px}.data-preview{font-size:11px;color:var(--muted);border-top:1px solid var(--line);padding-top:14px;margin-top:18px;overflow-wrap:anywhere;max-height:110px;overflow-y:auto}.archive-layout{display:grid;grid-template-columns:210px minmax(0,1fr);gap:23px;align-items:start}.archive-nav{min-width:0;position:sticky;top:24px;display:grid;gap:3px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px;max-height:calc(100dvh - 48px);overflow-y:auto;overscroll-behavior:contain}.archive-nav a{font-size:11px;color:var(--muted);padding:9px 10px;border-radius:5px;display:flex;align-items:center;justify-content:space-between;gap:10px}.archive-nav a:hover{background:#eef4e9;color:var(--brand)}.archive-content{min-width:0;display:grid;grid-template-columns:minmax(0,1fr);gap:20px}.archive-content>section{min-width:0;background:#fff;border:1px solid var(--line);border-radius:10px;padding:20px;scroll-margin-top:24px}.archive-content h2{font-size:17px;margin-bottom:17px}.library-result-count{color:var(--muted);font-size:12px;margin-bottom:16px}.library-toolbar{display:flex;gap:12px;align-items:center;margin-bottom:20px}.library-toolbar select{width:220px;font-size:13px;min-height:44px}.library-toolbar .search-field{margin-left:auto;width:min(360px,100%)}.library-collection-heading{margin-bottom:20px}.library-collection-heading h2{margin-bottom:0}.library-card-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;align-items:start}.library-card{min-width:0;border:1px solid var(--line);border-radius:8px;padding:17px;background:#fcfdfb;scroll-margin-top:95px}.library-card h3{font-size:14px;line-height:1.4}.library-card-summary{font-size:12px;color:var(--muted);margin-top:7px;line-height:1.65}.library-formula{margin:14px 0;padding:12px 10px;border-radius:6px;border:1px solid #e0e8da;background:#fff;font-size:14px}.library-formula .table-wrap,.library-worked-example .table-wrap{margin:0;border:0;border-radius:0;overflow-y:visible}.library-formula .copyable-latex,.library-worked-example .copyable-latex{white-space:nowrap;max-width:none}.library-card .table-scroll-hint{color:var(--muted);font-size:10px;margin:7px 0 0}.library-card .copy-tooltip{top:0;bottom:auto}.library-entry-details summary{display:flex;align-items:center;justify-content:space-between;gap:10px;padding:8px 0;cursor:pointer;color:var(--brand);font-size:11px;font-weight:550;list-style:none}.library-entry-details summary::-webkit-details-marker{display:none}.library-entry-details[open] summary svg{transform:rotate(90deg)}.library-entry-notes{padding-top:13px;border-top:1px solid var(--line);font-size:12px;line-height:1.7;overflow-wrap:anywhere}.library-entry-notes dt{color:var(--ink);font-weight:600;font-size:11px;margin-bottom:3px}.library-entry-notes dd{margin:0 0 13px;color:var(--muted)}.library-worked-example{background:#f0f5eb;border:1px solid #dce8d3;border-radius:6px;padding:12px}.library-worked-example h4{font-size:11px;margin-bottom:7px}.library-worked-example p{color:var(--muted);margin-bottom:10px}.library-graph-link{display:inline-flex;flex-wrap:wrap;align-items:center;gap:6px;color:var(--brand);font-size:11px;font-weight:550;margin-top:10px;padding-top:12px;border-top:1px solid var(--line);width:100%}.library-graph-link:hover{color:var(--brand-dark)}.library-sources{margin-top:18px;padding-top:13px;border-top:1px solid var(--line);font-size:11px;color:var(--muted)}.library-sources summary{cursor:pointer}.library-sources>div{display:flex;flex-wrap:wrap;gap:7px 15px;margin-top:10px}.library-sources a{display:inline-flex;align-items:center;gap:5px;color:var(--brand)}.library-sources a:hover{text-decoration:underline}.copyable-latex{min-height:auto;padding:3px 4px;background:transparent;color:inherit;font-weight:400;border-radius:4px;display:inline-block;position:relative;text-align:left}.copyable-latex:hover{background:#eaf2e5;color:var(--brand)}.copy-tooltip{position:absolute;bottom:calc(100% + 5px);left:0;padding:4px 7px;background:#294b35;color:#fff;border-radius:4px;font:10px system-ui,sans-serif;white-space:nowrap;z-index:2}.loading-state{display:flex;align-items:center;justify-content:center;gap:14px;min-height:400px;color:var(--muted)}.loading-spinner{width:20px;height:20px;border:2px solid #dce6d7;border-top-color:var(--brand);border-radius:50%;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.skip-link{position:fixed;top:10px;left:10px;z-index:100;transform:translateY(-150%);background:var(--brand);color:#fff;padding:12px 20px;border-radius:6px}.skip-link:focus{transform:translateY(0)}@media (min-width: 1500px){.app-main{padding-top:45px}}@media (max-width: 1200px){.app-main{padding:30px 25px 0}.topbar{padding:0 25px}.module-grid{gap:12px}.module-card{padding:20px}.archive-layout{grid-template-columns:175px minmax(0,1fr)}}@media (max-width: 1024px){html{scroll-padding-top:90px}.archive-nav{top:88px;max-height:calc(100dvh - 110px)}.archive-content>section,.library-card{scroll-margin-top:88px}.app-shell{padding-left:0}.sidebar{top:64px;transform:translate(-100%);visibility:hidden;transition:transform .2s,visibility .2s;padding-top:22px;z-index:60}.sidebar.open{transform:translate(0);visibility:visible}.sidebar .brand{margin-bottom:25px}.topbar{display:flex;height:64px;justify-content:flex-start;padding:0 24px}.navbar-toggle{display:inline-flex}.mobile-brand{display:block;font-family:inherit;font-size:19px;font-weight:800;letter-spacing:-.7px}.navigation-backdrop{display:block;position:fixed;top:64px;right:0;bottom:0;left:0;background:#182f2240;border:0;border-radius:0;z-index:55}.app-main{min-height:calc(100vh - 64px)}}@media (max-width: 760px){.module-grid{grid-template-columns:1fr}.workspace-grid{grid-template-columns:1fr;gap:17px}.formula-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.archive-layout{grid-template-columns:1fr;gap:17px}.archive-nav{position:static;display:flex;overflow-x:auto;max-height:none}.archive-nav a{white-space:nowrap}}@media (max-width: 520px){input,textarea,select,.math-input,.search-field input{font-size:16px}body{font-size:13px}.app-main{padding:25px 17px 0}.topbar{padding:0 13px;gap:9px}.page-heading{margin-bottom:22px}.page-heading>p{font-size:12px}h1,.home-heading h1{font-size:27px}.home-heading,.library-toolbar{flex-direction:column;align-items:stretch;gap:12px}.library-toolbar select,.library-toolbar .search-field{width:100%;font-size:16px}.section-heading{flex-direction:column;align-items:stretch;gap:14px}.search-field{width:100%}.section-heading h2{font-size:19px}.module-grid{gap:11px}.module-card{min-height:106px;padding:18px 16px;gap:12px}.module-card h2{font-size:16px}.module-card p{font-size:12px}.workspace-grid>*{min-width:0}.panel{padding:19px}.result-panel{min-height:220px}.result-value{font-size:20px}.chart-wrap{height:270px}.formula-grid,.equations-reference-list,.operator-grid{grid-template-columns:1fr}.reference-details summary{padding:15px}.reference-details>div{padding:0 15px 15px}th,td{padding:10px}.archive-content>section{padding:16px}.library-card-grid{grid-template-columns:1fr}.library-card{padding:15px}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{scroll-behavior:auto!important;animation-duration:.01ms!important;transition-duration:.01ms!important}}.graph-workspace{display:grid;grid-template-columns:290px minmax(0,1fr);gap:20px;align-items:start}.graph-editor{padding:21px;min-width:0}.graph-editor .panel-header{margin-bottom:10px}.graph-function-list{display:grid;gap:12px;max-height:460px;overflow-y:auto;overscroll-behavior:contain;margin:17px -3px 0;padding:3px}.graph-function-row{border:1px solid #dfe6da;border-left:3px solid var(--function-color);border-radius:8px;background:#fcfdfb;padding:11px;min-width:0}.graph-function-heading{display:flex;align-items:center;gap:7px;margin-bottom:8px}.graph-function-heading label{margin:0;font-family:var(--mono);font-size:13px;font-weight:500}.graph-visibility{width:28px;height:28px;min-height:28px;padding:4px;border-radius:5px;background:transparent;color:var(--function-color)}.graph-visibility:hover{background:#eaf0e5}.graph-remove{margin-left:auto;width:28px;min-height:28px;padding:4px;border-radius:5px}.graph-function-row .math-input{font-size:14px;padding:10px;min-height:43px}.graph-function-row.is-hidden{border-left-color:#a7b4a0;background:#f5f7f2}.graph-function-row.is-hidden .graph-visibility{color:#697565}.graph-function-row.has-error{border-left-color:var(--danger)}.graph-function-error{display:flex;align-items:flex-start;gap:6px;font-size:11px;line-height:1.55;color:var(--danger);margin-top:9px;overflow-wrap:anywhere}.graph-function-error svg{margin-top:2px}.graph-function-note{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:5px;margin-top:8px;font-size:10px;color:var(--muted)}.graph-function-note button{min-height:24px;padding:3px 0;background:transparent;color:var(--brand);border-radius:3px;font-size:10px;gap:4px}.graph-function-note button:hover{color:var(--brand-dark)}.graph-add-function{width:100%;margin-top:12px;min-height:40px;border:1px dashed #b7cab0;background:#f6f9f2;color:var(--brand);font-size:12px}.graph-add-function:hover{background:#eaf2e3;border-color:#8dae82}.graph-editor .field-hint{font-size:11px;margin-top:16px}.graph-help{margin-top:18px;padding-top:15px;border-top:1px solid var(--line)}.graph-help summary{display:flex;justify-content:space-between;align-items:center;cursor:pointer;font-size:11px;font-weight:550;list-style:none;gap:8px}.graph-help summary::-webkit-details-marker{display:none}.graph-help[open] summary svg{transform:rotate(90deg)}.graph-help p{margin-top:11px;color:var(--muted);font-size:11px}kbd{font-family:var(--mono);font-size:.9em;padding:1px 4px;border:1px solid #d6dfce;border-radius:4px;background:#f7f9f3}.graph-plot-panel{padding:20px;min-width:0}.graph-utility-buttons{display:flex;flex-shrink:0;gap:3px;margin-left:auto}.graph-utility-buttons .button-icon{width:36px;min-height:36px;border-radius:6px}.graph-utility-buttons .is-selected{background:#eef4e8;color:var(--brand)}.graph-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:8px;margin-bottom:16px}.graph-stage{width:100%;height:clamp(420px,calc(100dvh - 230px),680px);min-height:0;position:relative;overflow:hidden;border:1px solid #dde5d7;border-radius:9px;background:#fff;touch-action:none;cursor:grab;user-select:none;-webkit-user-select:none}.graph-stage.is-dragging{cursor:grabbing}.graph-stage:focus-visible{outline:3px solid #4d9d7f;outline-offset:3px}.function-plot{display:block;width:100%;height:100%;pointer-events:none}.graph-zoom-controls{position:absolute;right:12px;top:12px;display:flex;flex-direction:column;border:1px solid #d7e1cf;box-shadow:0 2px 7px #294b3510;border-radius:8px;overflow:hidden;cursor:default}.graph-zoom-controls button{width:40px;min-height:40px;padding:8px;border:0;border-radius:0;background:#ffffffed;color:#4b6f50}.graph-zoom-controls button+button{border-top:1px solid #e2e9dc}.graph-zoom-controls button:hover{background:#ecf3e5}.graph-zoom-controls button:focus-visible{outline-offset:-3px}.graph-empty-overlay{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);width:min(320px,calc(100% - 100px));display:flex;flex-direction:column;align-items:center;text-align:center;gap:10px;pointer-events:none;padding:20px;background:#fffffff0;border:1px solid #e1e8db;border-radius:12px}.graph-empty-overlay h3{font-size:14px}.graph-empty-overlay button{pointer-events:auto}.graph-readout{display:flex;flex-wrap:wrap;align-items:center;gap:5px 15px;padding:13px 3px;min-height:44px;border-bottom:1px solid var(--line);color:var(--muted);font-size:11px}.graph-readout-x{font-family:var(--mono);color:var(--ink)}.graph-readout-value{display:inline-flex;gap:4px;align-items:center;font-family:var(--mono);font-size:10px;color:var(--ink)}.graph-readout-value>span{height:2px;width:12px;margin-right:3px}.graph-readout-value sub{margin-left:-3px;align-self:flex-end;font-size:8px}.graph-interaction-help{margin-top:9px;font-size:10px;color:var(--muted)}.graph-notice{font-size:11px;padding:9px 11px;background:#eef5e8;border-radius:6px;margin-top:10px;color:#47673f}.graph-mobile-editor-link,.graph-mobile-view-link{display:none}.graph-plot-panel.is-expanded{position:fixed;top:14px;right:14px;bottom:14px;left:14px;z-index:100;display:flex;flex-direction:column;background:#fff;box-shadow:0 0 0 100vmax #1b322360;border-color:#b8c9b0}.graph-plot-panel.is-expanded .graph-stage{flex:1;height:auto}.graph-plot-panel.is-expanded .graph-readout,.graph-plot-panel.is-expanded .graph-toolbar{flex-shrink:0}.graph-plot-panel.is-expanded .graph-mobile-editor-link{display:none}@media (max-width: 1200px){.graph-workspace{grid-template-columns:260px minmax(0,1fr);gap:17px}.graph-editor,.graph-plot-panel{padding:18px}}@media (max-width: 760px){.graph-workspace{display:flex;flex-direction:column;gap:18px}.graph-plot-panel{order:0;width:100%}.graph-editor{order:1;width:100%}.graph-stage{height:clamp(300px,48dvh,430px)}.graph-function-list{max-height:350px;grid-template-columns:repeat(2,minmax(0,1fr))}.graph-function-row .math-input{font-size:16px}.graph-mobile-editor-link{display:inline-flex;margin-left:auto}.graph-mobile-view-link{display:inline-flex;width:100%;margin-top:15px}.graph-plot-panel.is-expanded{top:8px;right:8px;bottom:8px;left:8px}}@media (max-width: 520px){.graph-function-list{grid-template-columns:1fr}.graph-editor,.graph-plot-panel{padding:16px}.graph-toolbar{gap:6px;margin-bottom:12px}.graph-toolbar .button-small{padding:7px 9px;font-size:11px}.graph-utility-buttons{gap:1px}.graph-utility-buttons .button-icon{width:31px;min-height:34px;padding:7px}.graph-empty-overlay{padding:15px;width:calc(100% - 75px)}.graph-zoom-controls{right:8px;top:8px}.graph-zoom-controls button{width:35px;min-height:38px}.graph-interaction-help{font-size:9px}}