/* Notebook document built on Vibel's semantic theme. */
[data-study-page="/workbooks"]{max-width:1120px;width:100%}
[data-study-page="/workbooks"]>.sf-back{display:none}
[data-study-page="/workbooks"] .sf-work-head{margin:0 0 12px}
[data-study-page="/workbooks"] .sf-work-head h1{font-size:30px;margin:0 0 6px}
[data-study-page="/workbooks"] .sf-work-head>p{font-size:14px}
.wb-breadcrumb{display:flex;align-items:center;flex-wrap:wrap;gap:4px 20px;margin-bottom:22px;border-bottom:1px solid var(--study-line)}
.wb-breadcrumb a,.wb-breadcrumb span{display:inline-flex;align-items:center;min-height:44px;color:var(--study-muted);text-decoration:none;font-size:13px}
.wb-breadcrumb span{color:var(--study-ink);border-bottom:2px solid var(--study-accent);font-weight:600}
.wb-editor{min-width:0}.wb-heading{display:flex;align-items:center;flex-wrap:wrap;gap:10px 24px}.wb-title{flex:1 1 280px;min-width:0}
.wb-title .sf-input{font-size:22px;font-weight:600;border-color:transparent;background:transparent;padding-left:0;border-radius:4px}
.wb-title .sf-input:hover,.wb-title .sf-input:focus{border-color:var(--study-line)}
.wb-kernel{display:inline-flex;align-items:center;gap:8px;color:var(--study-muted);font-size:12px}.wb-kernel>span{color:var(--study-success)}
.wb-kernel strong{padding:4px 8px;border:1px solid var(--study-line);border-radius:5px;font-weight:500}.wb-kernel [data-state="busy"]{color:var(--study-accent);background:var(--study-selected)}
.wb-menubar{display:flex;align-items:flex-start;flex-wrap:wrap;gap:4px 8px;padding:4px 0 10px}.wb-menubar>details{margin:0;position:relative}
.wb-editor details>summary,.wb-details>summary{display:flex;align-items:center;min-height:44px;height:auto;padding:10px 12px;gap:8px;border:1px solid transparent;border-radius:5px;box-shadow:none;background:transparent;transform:none;color:var(--study-ink);font:500 13px/1.5 var(--font-body,sans-serif);cursor:pointer}
.wb-editor details>summary::before{content:none}.wb-menubar details>summary::after,.wb-details>summary::after{content:'⌄';color:var(--study-muted)}
.wb-editor details[open]>summary,.wb-editor details>summary:hover{background:var(--study-soft)}
.wb-menubar details>div{position:absolute;z-index:10;top:48px;left:0;width:min(440px,calc(100vw - 64px));border:1px solid var(--study-line);background:var(--study-surface);box-shadow:0 12px 32px #0002;border-radius:8px;padding:18px}
.wb-library{display:grid;gap:16px}.wb-library label,.wb-packages{display:block;color:var(--study-muted);font-size:12px}.wb-library select,.wb-packages select{display:block;width:100%;margin-top:6px}.wb-library .sf-actions{border-top:1px solid var(--study-line);padding-top:12px}
.wb-file{position:relative;overflow:hidden}.wb-file input{position:absolute;inset:0;opacity:0;cursor:pointer;width:100%}.wb-file:focus-within{outline:2px solid var(--study-accent);outline-offset:3px}
.wb-save{margin-left:auto;padding:12px 0;font-size:12px;color:var(--study-muted)}
.wb-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:6px;padding:10px 0;border-block:1px solid var(--study-line)}
.wb-toolbar .sf-button,.wb-bottom .sf-button,.wb-cell .sf-button{border-radius:5px;box-shadow:none}.wb-type{max-width:150px}.wb-type .sf-input{min-height:44px;padding:8px 10px;border-radius:5px;font-size:13px}
.wb-context{display:flex;flex-wrap:wrap;justify-content:space-between;gap:6px;margin:12px 0 4px;color:var(--study-muted);font:12px/1.5 var(--font-body,sans-serif)}.sf-workspace .wb-status{min-height:22px;margin:0 0 18px;font-size:12px;overflow-wrap:anywhere}
.wb-cell{position:relative;min-width:0;margin:12px 0;border:1px solid var(--study-line);border-left:3px solid var(--study-line);border-radius:6px;background:var(--study-surface)}.wb-cell.is-selected{border-left-color:var(--study-accent)}.wb-cell:focus-within{border-color:var(--study-accent)}.wb-cell:focus-visible{outline:2px solid var(--study-accent);outline-offset:3px}
.wb-cell>header{display:flex;align-items:center;gap:10px;min-height:44px;padding:0 10px;border-bottom:1px solid var(--study-line);border-radius:5px 5px 0 0;background:var(--study-soft)}.wb-order{min-width:44px;color:var(--study-accent);font:12px/1.4 var(--font-mono,monospace)}.wb-cell-label{color:var(--study-muted);font-size:12px}
.wb-cell-actions{margin-left:auto;display:flex;gap:4px;align-items:center}.wb-cell-actions .sf-button{padding:8px;min-height:44px;background:transparent;border-color:transparent;font-size:12px}.wb-cell-actions details{position:relative;margin:0}.wb-cell-actions summary{min-width:44px;justify-content:center}.wb-cell-actions details>div{display:grid;gap:4px;position:absolute;right:0;top:44px;z-index:5;background:var(--study-surface);padding:6px;border:1px solid var(--study-line);border-radius:6px;min-width:160px;box-shadow:0 8px 24px #0002}.wb-cell-actions details>div .sf-button{justify-content:flex-start}.wb-cell-actions .sf-button:hover{background:var(--study-selected)}
.sf-workspace .wb-cell textarea{display:block;width:100%;resize:vertical;min-height:96px;border:0;border-radius:0 0 5px 5px;background:var(--study-surface);color:var(--study-ink);padding:14px 18px;font:14px/1.7 var(--font-mono,monospace);tab-size:4;white-space:pre;overflow-wrap:normal;overflow-x:auto}.sf-workspace .wb-cell textarea:focus-visible{outline-offset:-3px}
.wb-markdown{padding:18px 20px;overflow-wrap:anywhere}.sf-workspace .wb-markdown h1{font-size:28px;margin-bottom:12px}.sf-workspace .wb-markdown h2{font-size:23px}.wb-markdown>:last-child{margin-bottom:0}.wb-markdown img{max-width:100%}.wb-markdown pre{overflow:auto}
.wb-outputs:empty{display:none}.wb-outputs{border-top:1px solid var(--study-line);padding:16px 18px;max-height:650px;overflow:auto;border-radius:0 0 5px 5px}.wb-outputs pre{margin:0 0 8px;white-space:pre-wrap;overflow-wrap:anywhere;font:13px/1.6 var(--font-mono,monospace);background:transparent;border:0;padding:0}.wb-outputs img{display:block;max-width:100%;height:auto;background:#fff}.wb-outputs iframe{width:100%;min-height:280px;border:0;background:#fff}.wb-table-scroll{max-width:100%;overflow:auto}.wb-outputs table{width:100%;border-collapse:collapse;font:12px/1.6 var(--font-mono,monospace)}.wb-outputs th,.wb-outputs td{text-align:left;padding:8px 12px;border-bottom:1px solid var(--study-line);white-space:pre-wrap;overflow-wrap:anywhere;min-width:70px}.wb-outputs th{color:var(--study-ink);background:var(--study-soft)}
.wb-bottom{display:flex;flex-wrap:wrap;gap:8px;margin:18px 0}.wb-details{margin-top:28px;border:1px solid var(--study-line);border-radius:6px}.wb-details>summary{width:100%;padding:14px 18px;font-weight:600}.wb-details>summary::before{content:none}.wb-details>summary::after{margin-left:auto}.wb-detail-body{padding:0 18px 18px}.wb-packages{max-width:360px;margin:16px 0}.wb-details ul{font:12px/1.8 var(--font-mono,monospace);overflow-wrap:anywhere}
.wb-sr{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(max-width:600px){.wb-heading{gap:4px}.wb-title{flex-basis:100%}.wb-title .sf-input{font-size:19px}.wb-menubar{position:relative;margin-top:8px}.wb-menubar>details{position:static}.wb-menubar details>div{width:100%;top:48px}.wb-save{font-size:11px}.wb-toolbar .sf-button{flex:1 0 auto;padding:8px 10px}.wb-context span:last-child{display:none}.wb-cell>header{gap:6px;padding-inline:6px}.wb-order{min-width:30px}.wb-cell-label{font-size:11px}.sf-workspace .wb-cell textarea{font-size:16px;padding:12px}.wb-outputs,.wb-markdown{padding:14px}.wb-breadcrumb{gap:4px 16px;margin-bottom:14px}}
.wb-kernel:has([data-state="off"])>span{color:var(--study-muted)}

/* Keep the editable and decorative layers pixel-aligned. Colours never change
   font weight or width; selection, IME, undo and copying stay native. */
.wb-editor{--syntax-comment:#626a76;--syntax-keyword:#7c3daf;--syntax-string:#226630;--syntax-number:#915015;--syntax-function:#075c9e;--syntax-operator:#864700}
:root[data-theme="dark"] .wb-editor{--syntax-comment:#9ca6b5;--syntax-keyword:#c5a0ef;--syntax-string:#a7d787;--syntax-number:#efbd81;--syntax-function:#88c8f9;--syntax-operator:#f0ae70}
.wb-source{position:relative;min-width:0;isolation:isolate;background:var(--study-surface);border-radius:0 0 5px 5px}
.wb-source[hidden]{display:none}
.sf-workspace .wb-source textarea,.sf-workspace .wb-source .wb-highlight{margin:0;padding:14px 18px;border:0;border-radius:0;box-sizing:border-box;font:400 14px/1.7 var(--font-mono,monospace);font-variant-ligatures:none;letter-spacing:normal;word-spacing:normal;text-align:left;tab-size:4;white-space:pre;overflow-wrap:normal;word-break:normal;text-transform:none;text-shadow:none}
.sf-workspace .wb-source textarea{position:relative;z-index:1;display:block;background:transparent;caret-color:var(--study-ink)}
.sf-workspace .wb-source .wb-highlight{display:none;position:absolute;inset:0;z-index:0;overflow:hidden;pointer-events:none;user-select:none;background:transparent;color:var(--study-ink)}
.sf-workspace .wb-source.has-syntax .wb-highlight{display:block}
.sf-workspace .wb-source.has-syntax textarea{color:transparent;-webkit-text-fill-color:transparent}
.sf-workspace .wb-source.has-syntax textarea::selection{background:#8aaaf34d;color:transparent}
.sf-workspace .wb-source .token,.sf-workspace .wb-markdown .token{font:inherit;letter-spacing:inherit;text-decoration:none;background:none;color:inherit;text-shadow:none}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.comment,.prolog,.doctype,.cdata){color:var(--syntax-comment)}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.keyword,.boolean,.atrule,.important,.bold,.title){color:var(--syntax-keyword)}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.string,.char,.attr-value,.selector,.url,.code-snippet,.code-block){color:var(--syntax-string)}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.number,.constant,.symbol){color:var(--syntax-number)}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.function,.builtin,.class-name,.tag,.attr-name,.property){color:var(--syntax-function)}
.sf-workspace .wb-editor :is(.wb-source,.wb-markdown) .token:is(.operator,.entity,.regex,.inserted,.deleted,.list,.hr,.blockquote,.italic){color:var(--syntax-operator)}
.sf-workspace .wb-markdown pre{padding:14px 16px;border:1px solid var(--study-line);border-radius:5px;background:var(--study-soft);color:var(--study-ink);font:14px/1.7 var(--font-mono,monospace);white-space:pre}
.sf-workspace .wb-markdown pre code{padding:0;border:0;background:transparent;font:inherit;color:inherit}
@media(max-width:600px){.sf-workspace .wb-source textarea,.sf-workspace .wb-source .wb-highlight{font-size:16px;padding:12px}}
@media(forced-colors:active){.sf-workspace .wb-source.has-syntax .wb-highlight{display:none}.sf-workspace .wb-source.has-syntax textarea{color:CanvasText;-webkit-text-fill-color:CanvasText;caret-color:CanvasText}.sf-workspace .wb-source.has-syntax textarea::selection{background:Highlight;color:HighlightText;-webkit-text-fill-color:HighlightText}}