/*! tailwindcss v4.3.3 | MIT License | https://tailwindcss.com */@layer properties{@supports (((-webkit-hyphens:none)) and (not (margin-trim:inline))) or ((-moz-orient:inline) and (not (color:rgb(from red r g b)))){*,::backdrop,:after,:before{--tw-border-style:solid;--tw-outline-style:solid;--tw-blur:initial;--tw-brightness:initial;--tw-contrast:initial;--tw-grayscale:initial;--tw-hue-rotate:initial;--tw-invert:initial;--tw-opacity:initial;--tw-saturate:initial;--tw-sepia:initial;--tw-drop-shadow:initial;--tw-drop-shadow-color:initial;--tw-drop-shadow-alpha:100%;--tw-drop-shadow-size:initial}}}@layer theme{:host,:root{--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--shadow-sm:0 1px 3px 0 #0000001a,0 1px 2px -1px #0000001a;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,::backdrop,:after,:before{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}:host,html{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue","Noto Sans",Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji");font-feature-settings:var(--default-font-feature-settings,normal);font-variation-settings:var(--default-font-variation-settings,normal);-webkit-tap-highlight-color:transparent}hr{height:0;color:inherit;border-top-width:1px}abbr:where([title]){-webkit-text-decoration:underline dotted;text-decoration:underline dotted}h1,h2,h3,h4,h5,h6{font-size:inherit;font-weight:inherit}a{color:inherit;-webkit-text-decoration:inherit;text-decoration:inherit}b,strong{font-weight:bolder}code,kbd,pre,samp{font-family:var(--default-mono-font-family,ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace);font-feature-settings:var(--default-mono-font-feature-settings,normal);font-variation-settings:var(--default-mono-font-variation-settings,normal);font-size:1em}small{font-size:80%}sub,sup{vertical-align:baseline;font-size:75%;line-height:0;position:relative}sub{bottom:-.25em}sup{top:-.5em}table{text-indent:0;border-color:inherit;border-collapse:collapse}:-moz-focusring:where(:not(iframe)){outline:auto}progress{vertical-align:baseline}summary{display:list-item}menu,ol,ul{list-style:none}audio,canvas,embed,iframe,img,object,svg,video{vertical-align:middle;display:block}img,video{max-width:100%;height:auto}button,input,optgroup,select,textarea{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}::file-selector-button{font:inherit;font-feature-settings:inherit;font-variation-settings:inherit;letter-spacing:inherit;color:inherit;opacity:1;background-color:#0000;border-radius:0}:where(select:is([multiple],[size])) optgroup{font-weight:bolder}:where(select:is([multiple],[size])) optgroup option{padding-inline-start:20px}::file-selector-button{margin-inline-end:4px}::placeholder{opacity:1}@supports (not ((-webkit-appearance:-apple-pay-button))) or (contain-intrinsic-size:1px){::placeholder{color:currentColor}@supports (color:color-mix(in lab,red,red)){::placeholder{color:color-mix(in oklab,currentcolor 50%,transparent)}}}textarea{resize:vertical}::-webkit-search-decoration{-webkit-appearance:none}::-webkit-date-and-time-value{min-height:1lh;text-align:inherit}::-webkit-datetime-edit{display:inline-flex}::-webkit-datetime-edit-fields-wrapper{padding:0}::-webkit-datetime-edit,::-webkit-datetime-edit-year-field{padding-block:0}::-webkit-datetime-edit-day-field,::-webkit-datetime-edit-month-field{padding-block:0}::-webkit-datetime-edit-hour-field,::-webkit-datetime-edit-minute-field{padding-block:0}::-webkit-datetime-edit-millisecond-field,::-webkit-datetime-edit-second-field{padding-block:0}::-webkit-datetime-edit-meridiem-field{padding-block:0}::-webkit-calendar-picker-indicator{line-height:1}:-moz-ui-invalid{box-shadow:none}button,input:where([type=button],[type=reset],[type=submit]){appearance:button}::file-selector-button{appearance:button}::-webkit-inner-spin-button,::-webkit-outer-spin-button{height:auto}[hidden]:where(:not([hidden=until-found])){display:none!important}}@layer components;@layer utilities{.block{display:block}.hidden{display:none}.border{border-style:var(--tw-border-style);border-width:1px}.outline{outline-style:var(--tw-outline-style);outline-width:1px}.filter{filter:var(--tw-blur,) var(--tw-brightness,) var(--tw-contrast,) var(--tw-grayscale,) var(--tw-hue-rotate,) var(--tw-invert,) var(--tw-saturate,) var(--tw-sepia,) var(--tw-drop-shadow,)}}:root{color-scheme:dark;--bg:#1d1e22;--sidebar:#24262b;--surface:#2b2d33;--surface-hover:#33363e;--selected:#3b3e50;--line:#3d414b;--text:#d7d9e1;--title:#f1f2f6;--muted:#b0b5c3;--quiet:#a4aaba;--accent:#c4c0ef;--accent-soft:#353649;--primary-bg:#c4c0ef;--primary-text:#272535;--code-bg:#23252b;--code-text:#e0e3ec;--focus:#c4c0ef;--diagram-bg:#dcdedc;--radius-card:20px;--radius-control:14px;--radius-small:10px;--shadow-sm:0 3px 12px #0a0c121f;--shadow-card:0 8px 28px #0a0c1224;--shadow-hover:0 12px 32px #0a0c1238;--shadow-primary:0 5px 18px #0d0e192e;--ink:var(--title);--paper:var(--bg);--cream:var(--surface);--sage:var(--surface);--green:var(--selected)}:root[data-theme=light]{color-scheme:light;--bg:#f7f7f5;--sidebar:#f0f1f2;--surface:#fcfcfb;--surface-hover:#f2f3f4;--selected:#e9ebee;--line:#dfe2e6;--text:#2b2f36;--title:#1f2329;--muted:#646b76;--quiet:#626a75;--accent:#245bdb;--accent-soft:#eef0f3;--primary-bg:#245bdb;--primary-text:#fff;--code-bg:#eff0f2;--code-text:#30343b;--focus:#245bdb;--diagram-bg:#e9eaec;--shadow-sm:0 2px 8px #1f23290a;--shadow-card:0 6px 22px #1f23290d;--shadow-hover:0 10px 26px #1f232914;--shadow-primary:0 4px 14px #245bdb1f}*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:88px}body{background:var(--bg);min-width:320px;color:var(--text);-webkit-font-smoothing:antialiased;margin:0;font:15px/1.7 -apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Microsoft YaHei,sans-serif}a{color:inherit;text-decoration:none}button,input,select,textarea{font:inherit}button{color:inherit;cursor:pointer}a,button,input,select,summary{outline-offset:4px}[tabindex]:focus-visible,a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible{outline:2px solid var(--focus)}::selection{background:var(--selected);color:var(--title)}h1,h2,h3,h4{color:var(--title);letter-spacing:-.025em;text-wrap:balance;font-weight:600;line-height:1.5}h1{margin:0 0 16px;font-size:34px;line-height:1.4}h2{margin:30px 0 14px;font-size:22px}h3{margin:22px 0 10px;font-size:18px}p{text-wrap:pretty;margin:0 0 18px}svg{flex-shrink:0}a,button{touch-action:manipulation}[hidden]{display:none!important}.shell{width:min(100% - 88px,1040px);min-width:0;margin-inline:auto}.muted{color:var(--muted)}.eyebrow,.section-number{letter-spacing:0;color:var(--muted);font-size:12px;font-weight:400}.heading-period{color:var(--muted)}.secondary-link,.text-link{color:var(--accent);align-items:center;gap:9px;font-size:14px;display:inline-flex}.secondary-link:hover,.text-link:hover{text-underline-offset:5px;text-decoration:underline}.button{border:1px solid var(--line);border-radius:var(--radius-control);cursor:pointer;white-space:nowrap;justify-content:center;align-items:center;gap:12px;font-weight:500;line-height:1.5;transition:background .18s,box-shadow .18s,transform .18s;display:inline-flex}.button-default{min-height:42px;padding:10px 16px;font-size:14px}.button-sm{min-height:36px;padding:8px 12px;font-size:13px}.button-primary{background:var(--primary-bg);color:var(--primary-text);box-shadow:var(--shadow-primary);border-color:#0000}.button-outline{background:var(--surface);color:var(--text);box-shadow:var(--shadow-sm);border-color:#0000}.button-ghost{background:0 0;border-color:#0000}.button:hover{background:var(--surface-hover)}.button-primary:hover{background:var(--primary-bg);box-shadow:var(--shadow-hover)}.page-wrap{padding:42px 0 64px}.page-heading h1{margin:10px 0 14px;font-size:34px}.page-heading p{color:var(--muted);max-width:670px;font-size:16px;line-height:1.9}.page-heading em{font-style:normal}.home-hero{padding:42px 0 12px}.hero-copy{max-width:720px}.hero-kicker{color:var(--muted);margin-bottom:12px;font-size:13px}.hero-copy h1{margin-bottom:16px;font-size:34px;font-weight:600}.hero-description{color:var(--muted);font-size:16px;line-height:1.9}.hero-actions{flex-wrap:wrap;align-items:center;gap:20px;margin-top:23px;display:flex}.featured-section{padding:8px 0 24px}.section-heading{justify-content:space-between;align-items:center;gap:20px;margin:28px 0 16px;display:flex}.section-heading h2{margin:0;font-size:17px;font-weight:550}.section-heading p{color:var(--muted);margin:4px 0 0;font-size:13px}.course-grid,.home-courses{grid-template-columns:repeat(2,minmax(0,1fr));gap:22px;display:grid}.featured-card{border-radius:var(--radius-card);background:var(--surface);min-width:0;box-shadow:var(--shadow-card);border:1px solid #0000;flex-direction:column;padding:27px;transition:background .2s,box-shadow .2s,transform .2s;display:flex}.featured-card:hover{background:var(--surface-hover);box-shadow:var(--shadow-hover)}.featured-copy{flex-direction:column;flex:1;min-width:0;display:flex}.course-label,.featured-index{color:var(--muted);font-size:12px}.featured-copy h3{margin:19px 0 12px;font-size:24px}.featured-copy p{color:var(--muted);margin-bottom:22px;font-size:14px;line-height:1.85}.featured-bottom{justify-content:space-between;align-items:center;gap:16px;margin-top:auto;font-size:13px;display:flex}.featured-bottom>span{align-items:center;gap:8px;display:flex}.home-links,.recommended-list{display:grid}.home-link,.recommended-row{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:18px;padding:19px 2px;display:flex}.home-link strong,.recommended-row strong{color:var(--title);font-size:15px;font-weight:500}.home-link p,.recommended-row p{color:var(--muted);margin:4px 0 0;font-size:13px}.home-link:hover,.recommended-row:hover{color:var(--title)}.home-author{background:var(--surface);border-radius:var(--radius-card);box-shadow:var(--shadow-sm);align-items:center;gap:18px;margin:28px 0 0;padding:20px 22px;display:flex}.home-author p{color:var(--muted);margin:0;font-size:14px}.home-author a{flex:none;margin-left:auto}.home-section{padding:0 0 26px}.home-skills{color:var(--muted);font-size:14px;line-height:1.9}.course-list{margin-top:35px}.list-topline{color:var(--muted);justify-content:space-between;padding-bottom:16px;font-size:13px;display:flex}.course-row,.list-topline{border-bottom:1px solid var(--line);align-items:center}.course-row{grid-template-columns:minmax(0,1fr) auto;gap:28px;padding:28px 6px;display:grid}.course-row:hover{background:var(--surface)}.course-row-copy{min-width:0}.course-row-eyebrow{color:var(--muted);font-size:12px}.course-row-copy h2{margin:9px 0 12px;font-size:24px}.course-row-copy p{color:var(--muted);max-width:700px;margin:0 0 15px;font-size:15px}.course-row-meta{align-items:center;gap:7px;font-size:12px;display:flex}.course-row-arrow,.course-row-meta{color:var(--muted)}.course-detail{padding:32px 0 64px}.breadcrumb{color:var(--muted);align-items:center;gap:8px;font-size:13px;display:inline-flex}.detail-hero{margin-top:31px}.detail-copy{max-width:740px}.detail-copy h1{margin:14px 0 16px;font-size:34px}.detail-lead{color:var(--muted);font-size:17px;line-height:1.9}.detail-tags{flex-wrap:wrap;gap:8px;margin:22px 0;display:flex}.detail-tags span{border-radius:var(--radius-small);background:var(--accent-soft);color:var(--accent);padding:5px 10px;font-size:12px}.curriculum{margin-top:40px}.curriculum-heading{justify-content:space-between;align-items:end;gap:25px;margin-bottom:18px;display:flex}.curriculum-heading h2{margin:0;font-size:21px}.curriculum-heading p{color:var(--muted);margin:0;font-size:14px}.chapter-list{border-top:1px solid var(--line)}.chapter-row{border-bottom:1px solid var(--line);grid-template-columns:28px minmax(0,1fr) 92px 20px;align-items:center;gap:18px;padding:22px 8px;display:grid}.chapter-row:hover{background:var(--surface)}.chapter-number{color:var(--muted);font-size:12px}.chapter-row h3{margin:0 0 6px;font-size:17px;font-weight:500}.chapter-row p{color:var(--muted);margin:0;font-size:13px}.chapter-time{align-items:center;gap:6px;font-size:12px;display:flex}.chapter-row-arrow,.chapter-time{color:var(--muted)}.reading-page{padding:26px 0 65px}.reading-breadcrumb{color:var(--muted);align-items:center;gap:10px;margin-bottom:28px;font-size:12px;display:flex}.reading-breadcrumb a{align-items:center;gap:7px;display:flex}.reading-layout{display:block}.reading-layout:not(:has(.reader-toc)){grid-template-columns:minmax(0,720px)}.reader-content{min-width:0;max-width:760px;margin-inline:auto}.reading-basic .reader-content{max-width:720px}.reading-basic .reading-layout:not(:has(.reader-toc)){grid-template-columns:minmax(0,700px)}.article-overline{color:var(--muted);flex-wrap:wrap;align-items:center;gap:16px;margin-bottom:14px;font-size:12px;display:flex}.article-overline>span{align-items:center;gap:6px;display:flex}.article-header{margin-bottom:30px}.article-header h1{margin-bottom:14px;font-size:32px;font-weight:600;line-height:1.5}.article-header p{color:var(--muted);margin:0;font-size:17px;line-height:1.85}.article-header .content-published-at{margin-top:15px;font-size:12px}.article-rule{background:var(--line);height:1px;margin:28px 0 33px}.prose{color:var(--text);overflow-wrap:anywhere;min-width:0;font-size:16px;line-height:1.85}.reading-basic .prose{font-size:18px;line-height:1.95}.prose h1{margin:32px 0 18px;font-size:29px}.prose h2{margin:34px 0 16px;font-size:22px;line-height:1.55}.prose h2,.prose h3{scroll-margin-top:90px}.prose h3{margin:26px 0 12px;font-size:19px;line-height:1.6}.prose h4{margin:23px 0 10px;font-size:17px}.prose p{margin:0 0 23px}.prose strong{color:var(--title);font-weight:600}.prose a{color:var(--accent);text-underline-offset:4px;word-break:break-word;text-decoration:underline}.prose blockquote{border-left:2px solid var(--quiet);background:var(--surface);border-radius:0 var(--radius-control) var(--radius-control) 0;color:var(--text);margin:26px 0;padding:16px 21px}.prose blockquote p{margin:0}.prose ol,.prose ul{margin:0 0 24px;padding-left:24px;list-style-position:outside}.prose ul{list-style-type:disc}.prose ol{list-style-type:decimal}.prose li{margin:7px 0;padding-left:3px}.prose li::marker{color:var(--muted)}.prose hr{border:0;border-top:1px solid var(--line);margin:30px 0}.prose pre{border:1px solid var(--line);border-radius:var(--radius-control);background:var(--code-bg);color:var(--code-text);tab-size:2;white-space:pre;max-width:100%;margin:24px 0 29px;padding:20px 23px;font:13px/1.8 ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;overflow-x:auto}.prose code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.88em}.prose :not(pre)>code{background:var(--accent-soft);color:var(--title);border-radius:6px;padding:2px 5px}.prose pre code{font-size:inherit;color:inherit;background:0 0;padding:0}.prose table{border-collapse:collapse;width:100%;max-width:100%;margin:24px 0 30px;font-size:14px;line-height:1.7;display:block;overflow-x:auto}.prose th{background:var(--surface);color:var(--title);text-align:left;font-weight:500}.prose td,.prose th{border-bottom:1px solid var(--line);vertical-align:top;min-width:90px;padding:12px 15px}.prose img{border-radius:var(--radius-control);max-width:100%;height:auto;margin:26px auto;display:block}.prose details{margin:24px 0}.prose summary{cursor:pointer;color:var(--muted)}.reader-toc{min-width:0;max-height:calc(100vh - 115px);color:var(--muted);padding-top:4px;font-size:12px;position:sticky;top:91px;overflow:auto}.reader-toc h2,.reader-toc>strong{color:var(--text);margin:0 0 14px;font-size:12px;font-weight:500;display:block}.reader-toc a{text-overflow:ellipsis;white-space:nowrap;min-width:0;padding:6px 0;line-height:1.7;display:block;overflow:hidden}.reader-toc a:hover{color:var(--title)}.article-end{border-top:1px solid var(--line);color:var(--muted);margin-top:40px;padding-top:23px;font-size:13px}.article-end p{margin:0}.article-nav{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;margin-top:28px;display:grid}.article-nav a{border-radius:var(--radius-card);background:var(--surface);box-shadow:var(--shadow-sm);border:1px solid #0000;flex-direction:column;gap:8px;min-width:0;padding:19px 21px;display:flex}.article-nav a:hover{background:var(--surface-hover);box-shadow:var(--shadow-card)}.article-nav a span{color:var(--muted);align-items:center;gap:7px;font-size:12px;display:flex}.article-nav strong{overflow-wrap:anywhere;font-size:14px;font-weight:500;line-height:1.75}.article-nav .next{text-align:right;align-items:flex-end}.markdown-diagram{border:1px solid var(--line);border-radius:var(--radius-control);background:var(--surface);max-width:100%;margin:28px 0;padding:18px;overflow:auto}.markdown-diagram>div{text-align:center;background:var(--diagram-bg);border-radius:6px;min-width:280px;padding:10px}.markdown-diagram svg{max-width:100%;height:auto}.markdown-diagram details{color:var(--muted);margin-top:14px;font-size:12px}.markdown-diagram summary{cursor:pointer}.markdown-diagram>p{color:var(--muted);font-size:13px}.not-found{min-height:65vh;padding:60px 0}.not-found h1{margin:16px 0;font-size:32px}.not-found p{color:var(--muted);margin-bottom:25px}@media (max-width:1100px){.shell{width:min(100% - 64px,1040px)}.reading-layout{grid-template-columns:minmax(0,720px)}.reader-toc{display:none}}@media (max-width:720px){.shell{width:calc(100% - 44px)}.page-wrap{padding:29px 0 45px}.home-hero{padding-top:30px}.detail-copy h1,.hero-copy h1,.page-heading h1{font-size:29px}.hero-description,.page-heading p{font-size:15px}.hero-actions{gap:16px}.course-grid,.home-courses{grid-template-columns:minmax(0,1fr);gap:12px}.featured-card{padding:21px}.featured-copy h3{margin-top:14px;font-size:23px}.section-heading{gap:14px;margin-top:24px}.section-heading h2{font-size:17px}.section-heading .text-link{font-size:13px}.home-author{flex-wrap:wrap;gap:10px;padding:18px}.home-author a{margin-left:0}.home-link,.recommended-row{gap:12px}.home-link p,.recommended-row p{font-size:13px}.course-list{margin-top:27px}.course-row{gap:16px;padding:23px 2px}.course-row-copy h2{font-size:23px}.course-row-copy p{font-size:14px}.course-detail{padding-top:25px}.detail-hero{margin-top:25px}.detail-lead{font-size:16px}.curriculum{margin-top:32px}.curriculum-heading{display:block}.curriculum-heading p{margin-top:8px}.chapter-row{grid-template-columns:22px minmax(0,1fr) 16px;gap:10px;padding:18px 0}.chapter-time{grid-column:2;font-size:12px}.chapter-row-arrow{grid-area:1/3}.chapter-row h3{font-size:16px}.reading-page{padding-top:24px}.reading-breadcrumb{white-space:nowrap;gap:7px;margin-bottom:23px;overflow:hidden}.reading-breadcrumb>span:last-child{text-overflow:ellipsis;overflow:hidden}.reading-layout{display:block}.reader-content{width:100%}.article-header h1{font-size:28px;line-height:1.5}.article-header p{font-size:16px}.article-header{margin-bottom:25px}.article-overline{gap:10px;font-size:12px}.prose{font-size:16px;line-height:1.85}.reading-basic .prose{font-size:17px;line-height:1.95}.prose h2{margin-top:30px;font-size:22px}.prose h3{font-size:19px}.prose blockquote{padding:15px 17px}.prose pre{padding:17px;font-size:12px}.prose td,.prose th{padding:11px 13px}.article-nav{gap:10px}.article-nav a{padding:14px}.article-nav strong{font-size:13px}.markdown-diagram{padding:12px}.not-found{padding-top:45px}.not-found h1{font-size:28px}}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:after,:before{transition:none!important;animation:none!important}}.home-reading,.home-resources{padding:0 0 26px}.links-list{display:grid}.simple-row{border-bottom:1px solid var(--line);align-items:center;gap:14px;padding:18px 2px;display:flex}.simple-row:last-child{border-bottom:0}.row-symbol{border-radius:var(--radius-control);background:var(--accent-soft);width:35px;height:35px;color:var(--muted);flex:none;place-items:center;display:grid}.row-text{flex:1;min-width:0}.row-text strong{color:var(--title);font-size:15px;font-weight:500;display:block}.row-text p{margin:4px 0 0;font-size:13px}.row-text p,.simple-row>span:last-child,.simple-row>svg:last-child{color:var(--muted)}.simple-row:hover{color:var(--title)}.course-card-icon{display:none}.resource-link{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:22px;padding:19px 2px;display:flex}.resource-link strong{color:var(--title);font-size:16px;font-weight:500;display:block}.resource-link p{color:var(--muted);margin:6px 0 0;font-size:14px}.resource-link:hover{color:var(--title)}@media (max-width:720px){.simple-row{gap:12px}.row-symbol{width:32px;height:32px}.row-text strong{font-size:14px}.row-text p{font-size:12px}.resource-link{gap:14px}.resource-link p{font-size:13px}}.row-text>span{color:var(--muted);margin-top:4px;font-size:13px;line-height:1.85;display:block}.resource-link>span{flex:1;min-width:0}.resource-link>span>span{color:var(--muted);margin-top:6px;font-size:14px;line-height:1.85;display:block}@media (max-width:720px){.resource-link>span>span,.row-text>span{font-size:13px}}.markdown-table-scroll{border:1px solid var(--line);border-radius:var(--radius-control);max-width:100%;margin:24px 0 30px;overflow-x:auto}.prose .markdown-table-scroll table,.skill-source-prose .markdown-table-scroll table{width:100%;min-width:100%;max-width:none;margin:0;display:table;overflow:visible}.markdown-table-scroll tr:last-child td{border-bottom:0}@media (hover:hover) and (prefers-reduced-motion:no-preference){.featured-card:hover{transform:translateY(-2px)}.button-outline:hover,.button-primary:hover{transform:translateY(-1px)}}.markdown-diagram figcaption{display:none}@media (max-width:640px){.markdown-diagram>div{min-width:500px}.markdown-diagram figcaption{color:#5f6678;margin-top:10px;font-size:12px;display:block}}@media (max-width:720px){.course-grid,.home-courses{gap:16px}.featured-card{padding:23px}}@media (forced-colors:active){.article-nav a,.button,.featured-card{border-color:buttontext}}.reading-page .reading-layout,.reading-page>.reading-breadcrumb{width:calc(100% - 48px);max-width:none;margin-inline:24px}.reading-page .reading-layout{grid-template-columns:190px minmax(0,880px);justify-content:start;align-items:start;gap:24px;display:grid}.reading-page .reading-layout>.reader-content{width:100%;max-width:none;margin-inline:0}.reading-toc-column{overscroll-behavior:contain;scrollbar-width:thin;min-width:0;max-height:calc(100dvh - 110px);position:sticky;top:86px;overflow-y:auto}.reading-toc-toggle{border-radius:var(--radius-control);width:100%;color:var(--muted);text-align:left;background:0 0;border:0;align-items:center;gap:8px;margin-bottom:10px;padding:8px 0;font-size:12px;line-height:1.8;display:flex}.reading-toc-toggle:hover{background:var(--surface-hover);color:var(--title)}.reading-page .reading-layout[data-toc-collapsed=true]{grid-template-columns:40px minmax(0,880px)}.reading-layout[data-toc-collapsed=true] .reading-toc-toggle{justify-content:center;padding-inline:0}.reading-layout[data-toc-collapsed=true] .reading-toc-toggle>span{display:none}.reading-toc-column .reader-toc{max-height:none;padding-top:0;display:block;position:static;overflow:visible}.reading-toc-column .reader-toc a[data-level="3"],.site-reading-directory .reader-toc a[data-level="3"]{color:var(--quiet);padding-left:12px;font-size:11px;line-height:1.65}@media (max-width:1100px){.reading-page .reading-layout{grid-template-columns:180px minmax(0,1fr)}}@media (max-width:800px){.reading-page .reading-layout,.reading-page>.reading-breadcrumb{width:calc(100% - 40px);margin-inline:20px}.reading-page .reading-layout{display:block}.reading-toc-column{display:none}}.course-image-link{border-radius:var(--radius-control);cursor:zoom-in;display:block}.course-image-link:focus-visible{outline:2px solid var(--focus);outline-offset:4px}.image-preview-dialog{border:1px solid var(--line);border-radius:var(--radius-card);background:var(--bg);width:calc(100vw - 32px);max-width:1600px;height:calc(100dvh - 32px);max-height:none;color:var(--text);box-shadow:var(--shadow-card);margin:auto;padding:16px}.image-preview-dialog[open]{grid-template-rows:auto minmax(0,1fr) auto;gap:12px;display:grid}.image-preview-dialog::backdrop{background:#000000b8}.image-preview-toolbar{align-items:center;gap:10px;min-width:0;display:flex}.image-preview-toolbar h2{color:var(--title);margin:0 auto 0 0;font-size:16px}.image-preview-toolbar button{border:1px solid var(--line);border-radius:var(--radius-control);background:var(--surface);color:var(--text);font:inherit;cursor:pointer;flex:none;padding:8px 12px;font-size:14px}.image-preview-toolbar button:hover{background:var(--surface-hover)}.image-preview-stage img:focus-visible,.image-preview-toolbar button:focus-visible{outline:2px solid var(--focus);outline-offset:3px}.image-preview-stage{overscroll-behavior:contain;touch-action:pan-x pan-y pinch-zoom;min-width:0;min-height:0;display:flex;overflow:auto}.image-preview-stage img{object-fit:contain;flex:none;margin:auto;display:block}.image-preview-fit{cursor:zoom-in;width:auto;max-width:100%;height:auto;max-height:100%}.image-preview-original{cursor:zoom-out;width:auto;max-width:none;height:auto;max-height:none}.image-preview-hint{min-height:20px;color:var(--muted);font-size:12px;line-height:1.6}.image-preview-hint a{text-decoration:underline}@media (max-width:800px){.image-preview-dialog{width:calc(100vw - 16px);height:calc(100dvh - 16px);padding:12px}.image-preview-toolbar{gap:8px}.image-preview-toolbar button{padding:8px 10px}}@property --tw-border-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-outline-style{syntax:"*";inherits:false;initial-value:solid}@property --tw-blur{syntax:"*";inherits:false}@property --tw-brightness{syntax:"*";inherits:false}@property --tw-contrast{syntax:"*";inherits:false}@property --tw-grayscale{syntax:"*";inherits:false}@property --tw-hue-rotate{syntax:"*";inherits:false}@property --tw-invert{syntax:"*";inherits:false}@property --tw-opacity{syntax:"*";inherits:false}@property --tw-saturate{syntax:"*";inherits:false}@property --tw-sepia{syntax:"*";inherits:false}@property --tw-drop-shadow{syntax:"*";inherits:false}@property --tw-drop-shadow-color{syntax:"*";inherits:false}@property --tw-drop-shadow-alpha{syntax:"<percentage>";inherits:false;initial-value:100%}@property --tw-drop-shadow-size{syntax:"*";inherits:false}.site-app{--sidebar-width:252px;min-height:100vh;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,PingFang SC,Helvetica Neue,Arial,sans-serif}.site-app[data-sidebar-collapsed=true]{--sidebar-width:74px}.site-drawer-backdrop,.site-sidebar button,.site-topbar button{font:inherit;color:inherit;cursor:pointer}.site-app a,.site-app button{-webkit-tap-highlight-color:transparent}.site-app :is(a,button):focus-visible{outline:2px solid var(--focus);outline-offset:3px}.site-skip-link{position:fixed;left:16px;top:12px;z-index:100;transform:translateY(-160%);border-radius:var(--radius-control);padding:9px 15px;background:var(--title);color:var(--bg);font-size:13px}.site-skip-link:focus{transform:none}.site-sidebar{position:fixed;inset:0 auto 0 0;z-index:40;width:var(--sidebar-width);padding:24px 12px 17px;background:var(--sidebar);box-shadow:1px 0 0 var(--line);display:flex;flex-direction:column;min-height:0;transition:none}.site-sidebar-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;flex:none;padding:2px 12px 28px;min-width:0}.site-brand{display:inline-flex;align-items:center;gap:11px;min-width:0;width:max-content;color:var(--title)}.site-brand-mark{width:28px;height:28px;border:2px solid;border-radius:50%;display:grid;place-items:center;transform:rotate(-22deg);flex:none}.site-brand-mark>span{width:12px;height:12px;border:2px solid;border-right:2px solid transparent;border-radius:50%}.site-brand-name{font-size:21px;font-weight:600;letter-spacing:-.6px;white-space:nowrap}.site-sidebar-scroll{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;scrollbar-width:thin;scrollbar-color:var(--line) transparent;overscroll-behavior:contain}.site-primary-nav{display:grid;gap:6px}.site-nav-link{display:flex;align-items:center;gap:11px;min-height:44px;padding:9px 12px;border-radius:var(--radius-control);font-size:14px;line-height:1.6;color:var(--muted);white-space:nowrap}.site-nav-link svg{flex:none}.site-nav-link:hover{background:var(--surface-hover);color:var(--title)}.site-nav-link[aria-current=page]{background:var(--selected);color:var(--title);font-weight:600;box-shadow:var(--shadow-sm)}.site-course-groups{margin-top:27px;min-width:0}.site-course-label{margin:0 12px 9px;font-size:11px;line-height:1.8;color:var(--quiet)}.site-course-group+.site-course-group{margin-top:9px}.site-course-heading{display:flex;align-items:center;gap:4px;min-width:0;padding-left:12px}.site-course-heading>a{min-width:0;flex:1;display:flex;align-items:center;gap:8px;min-height:38px;color:var(--muted);font-size:13px;line-height:1.6}.site-course-heading>a>span{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.site-course-heading>a>small{flex:none;font-size:10px;color:var(--quiet);white-space:nowrap;margin-left:auto}.site-course-heading>a:hover,.site-course-heading[data-active=true]>a{color:var(--title)}.site-course-heading>button{width:29px;height:30px;flex:none;border:0;background:none;border-radius:var(--radius-small);display:grid;place-items:center;color:var(--muted)}.site-course-heading>button:hover{background:var(--surface-hover);color:var(--title)}.site-course-heading>button[aria-expanded=false] svg{transform:rotate(-90deg)}.site-chapter-list{display:grid;gap:3px;padding-top:5px}.site-chapter-list[hidden]{display:none}.site-chapter-link{display:flex;align-items:flex-start;gap:8px;padding:8px 11px;min-width:0;border-radius:var(--radius-control);color:var(--muted);font-size:12px;line-height:1.65}.site-chapter-link>span:last-child{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.site-chapter-number{width:18px;flex:none;font-size:10px;color:var(--quiet);line-height:20px;font-variant-numeric:tabular-nums}.site-chapter-link:hover{background:var(--surface-hover);color:var(--title)}.site-chapter-link[aria-current=page]{background:var(--selected);color:var(--title);font-weight:600;box-shadow:var(--shadow-sm)}.site-chapter-link[aria-current=page] .site-chapter-number{color:var(--muted)}.site-sidebar-note{display:flex;align-items:center;gap:7px;flex:none;font-size:11px;color:var(--quiet);line-height:1.8;padding:20px 12px 0;margin:0;white-space:nowrap}.site-sidebar-dot{width:4px;height:4px;border-radius:50%;background:var(--muted);flex:none}.site-workspace{margin-left:var(--sidebar-width);min-width:0;min-height:100vh;background:var(--bg);transition:none}.site-topbar{position:sticky;top:0;z-index:25;height:64px;gap:18px;padding:0 36px;background:var(--bg)}.site-topbar,.site-topbar-context{min-width:0;display:flex;align-items:center}.site-topbar-context{gap:10px;flex:1;color:var(--muted);font-size:12px;line-height:1.6;white-space:nowrap;overflow:hidden}.site-topbar-context>a,.site-topbar-context>span{min-width:0;overflow:hidden;text-overflow:ellipsis}.site-topbar-context>a:hover{color:var(--title)}.site-topbar-context>.site-crumb-slash{flex:none;color:var(--quiet)}.site-crumb-current{color:var(--quiet)}.site-appearance>button,.site-chapter-link,.site-nav-link,.site-sidebar-toggle{transition:background .18s ease,color .18s ease,box-shadow .18s ease}.site-topbar-actions{display:flex;align-items:center;gap:14px;flex:none}.site-sidebar-toggle{display:grid;place-items:center;flex:none;width:30px;height:30px;padding:0;border:0;border-radius:var(--radius-control);background:none;color:var(--muted)!important}.site-sidebar-toggle:hover{background:var(--surface-hover);color:var(--title)!important}.site-reading-directory{display:none;padding:0 12px}.site-sidebar .reader-toc{display:block;position:static;top:auto;max-height:none;overflow:visible;padding:0;min-width:0;color:var(--muted);font-size:12px}.site-sidebar .reader-toc h2{margin:0 0 10px;font-size:11px;font-weight:500;line-height:1.8;color:var(--quiet)}.site-sidebar .reader-toc nav{display:grid;gap:2px}.site-sidebar .reader-toc a{display:block;padding:5px 0;font-size:12px;line-height:1.7;color:var(--muted)}.site-sidebar .reader-toc a:hover{color:var(--title)}.site-reading-directory+.site-course-groups{margin-top:25px}.site-appearance{display:inline-flex;align-items:center;gap:2px;padding:4px;background:var(--surface);border-radius:var(--radius-control);box-shadow:var(--shadow-sm);flex:none}.site-appearance>button{border:0;background:none;border-radius:var(--radius-small);padding:6px 11px;color:var(--muted);font-size:11px;line-height:1.5;white-space:nowrap}.site-appearance>button:hover{color:var(--title);background:var(--surface-hover)}html[data-theme=dark] .site-appearance>[data-theme-mode=dark],html[data-theme=light] .site-appearance>[data-theme-mode=light]{background:var(--selected);color:var(--title);font-weight:600;box-shadow:var(--shadow-sm)}.site-content{min-width:0;outline:none}.site-shell-footer{max-width:1080px;padding:27px 42px 29px;margin:0 auto;display:flex;align-items:center;justify-content:space-between;gap:16px;color:var(--quiet);font-size:11px;line-height:1.8;background:var(--bg)}.site-shell-footer>a:hover{color:var(--text)}.site-drawer-backdrop,.site-drawer-close,.site-menu-button{display:none}.site-app[data-sidebar-collapsed=true] .site-sidebar{padding-inline:10px}.site-app[data-sidebar-collapsed=true] .site-sidebar-heading{padding:2px 0 22px;justify-content:center;flex-direction:column;gap:18px}.site-app[data-sidebar-collapsed=true] .site-brand-name,.site-app[data-sidebar-collapsed=true] .site-course-groups,.site-app[data-sidebar-collapsed=true] .site-nav-link>span,.site-app[data-sidebar-collapsed=true] .site-sidebar-note>span:last-child{display:none}.site-app[data-sidebar-collapsed=true] .site-nav-link{justify-content:center;padding:11px 0;min-height:43px}.site-app[data-sidebar-collapsed=true] .site-primary-nav{gap:7px}.site-app[data-sidebar-collapsed=true] .site-sidebar-note{justify-content:center;padding-inline:0}.site-app[data-sidebar-collapsed=true] .site-reading-directory{display:none}@media(max-width:1050px){.site-topbar{padding-inline:27px;gap:12px}.site-topbar-actions{gap:7px}.site-shell-footer{padding-inline:30px}}@media(max-width:800px){.site-app,.site-app[data-sidebar-collapsed=true]{--sidebar-width:0px}.site-sidebar{width:min(292px,calc(100vw - 46px));padding:22px 13px 18px;z-index:70;transform:translateX(-100%);visibility:hidden;pointer-events:none;transition:transform .18s ease,visibility .18s ease}.site-app[data-drawer-open=true] .site-sidebar{transform:translateX(0);visibility:visible;pointer-events:auto}.site-sidebar-heading{padding:2px 11px 25px}.site-sidebar-toggle{display:none}.site-reading-directory{display:block;margin-top:24px}.site-drawer-close{border:0;background:none;width:29px;height:29px;border-radius:var(--radius-small);display:grid;place-items:center;color:var(--muted)!important}.site-drawer-close:hover{background:var(--surface-hover)}.site-drawer-backdrop{display:block;position:fixed;inset:0;z-index:60;background:rgb(0 0 0/.55);border:0;width:100%;height:100%;padding:0;cursor:default!important}.site-topbar{height:59px;padding:0 17px;gap:12px}.site-menu-button{display:flex;align-items:center;gap:6px;padding:7px 3px;border:0;border-radius:var(--radius-small);background:none;color:var(--muted)!important;font-size:11px!important;line-height:1.5;flex:none}.site-menu-button:hover{background:var(--surface-hover)}.site-topbar-context{font-size:11px;gap:6px}.site-crumb-current,.site-topbar-context>.site-crumb-slash{display:none}.site-appearance{padding:3px;gap:1px;border-radius:var(--radius-control)}.site-appearance>button{font-size:11px;padding:6px 9px}.site-shell-footer{padding:24px 23px 28px;font-size:10px;gap:8px;flex-wrap:wrap}}@media(prefers-reduced-motion:reduce){.site-sidebar,.site-workspace{transition:none}}@media (forced-colors:active){.site-appearance>button[aria-pressed=true],.site-chapter-link[aria-current=page],.site-nav-link[aria-current=page]{outline:1px solid Highlight;outline-offset:-2px}}