html[data-theme="dark"]{color-scheme:dark}html[data-theme="light"]{color-scheme:light;--bg:#f5f7fb;--sidebar:#eef1f6;--surface:#fff;--surface-2:#f1f4f8;--surface-3:#e7ebf1;--text:#18202b;--muted:#667181;--line:#d7dde6;--accent:#286fdb;--success:#168657}.topbar{grid-template-columns:minmax(210px,250px) minmax(180px,1fr) auto auto auto auto auto!important}.brand{gap:10px}.brand-logo{display:block;width:34px;height:34px;flex:0 0 34px;border:1px solid rgba(255,255,255,.14);border-radius:9px;object-fit:cover;box-shadow:0 3px 12px rgba(0,0,0,.28)}.theme-toggle{position:relative;display:grid;width:42px;height:42px;flex:0 0 42px;place-items:center;padding:0;border:1px solid #454545;border-radius:11px;background:#202020;color:#d9dbe2;cursor:pointer;transition:transform .15s ease,border-color .15s ease,background .15s ease,color .15s ease}.theme-toggle:hover{transform:translateY(-1px);border-color:#687890;background:#292929;color:#fff}.theme-toggle svg{width:19px;height:19px}.theme-icon{display:grid;place-items:center}.theme-icon-moon{display:none}html[data-theme="light"] .theme-icon-sun{display:none}html[data-theme="light"] .theme-icon-moon{display:grid}.layout{grid-template-columns:320px minmax(0,1fr) 250px}.page-toc{grid-column:3;position:sticky;top:86px;align-self:start;max-height:calc(100vh - 110px);overflow:auto;margin:36px 24px 0 0;padding:15px 0 15px 18px;border-left:1px solid var(--line);scrollbar-width:thin}.page-toc[hidden]{display:none}.page-toc-title{display:block;margin-bottom:10px;color:var(--text);font-size:11px;font-weight:850;letter-spacing:.07em;text-transform:uppercase}.page-toc nav{display:flex;flex-direction:column;gap:2px}.page-toc a{display:block;padding:5px 8px;border-left:2px solid transparent;border-radius:0 7px 7px 0;color:var(--muted);font-size:12px;line-height:1.35;text-decoration:none;transition:color .14s ease,background .14s ease,border-color .14s ease}.page-toc a:hover,.page-toc a.is-active{border-left-color:var(--accent);background:rgba(76,145,255,.08);color:var(--text)}.page-toc .toc-depth-3{padding-left:18px;font-size:11px}.article-meta{display:flex;align-items:center;gap:7px;margin-top:56px;padding-top:18px;border-top:1px solid var(--line);color:var(--muted);font-size:11px}.article-meta svg{width:14px;height:14px;flex:0 0 14px}.article-meta time{color:var(--text);font-weight:650}.sidebar-credit-link{color:inherit;text-decoration:none}.sidebar-credit-link:hover strong{color:#8ab4ff;text-decoration:underline;text-underline-offset:3px}.reading-progress{position:fixed;z-index:120;top:60px;left:0;width:100%;height:2px;pointer-events:none;opacity:0;transition:opacity .2s ease}body.long-article .reading-progress{opacity:1}.reading-progress span{display:block;width:100%;height:100%;transform:scaleX(0);transform-origin:left center;background:linear-gradient(90deg,#4c91ff,#8b5cf6);box-shadow:0 0 10px rgba(76,145,255,.45);will-change:transform}.back-to-top{position:fixed;z-index:70;right:24px;bottom:24px;display:grid;width:43px;height:43px;place-items:center;padding:0;transform:translateY(14px) scale(.94);border:1px solid var(--line);border-radius:13px;background:rgba(32,32,32,.92);color:var(--text);box-shadow:0 12px 34px rgba(0,0,0,.3);opacity:0;pointer-events:none;cursor:pointer;backdrop-filter:blur(12px);transition:opacity .18s ease,transform .18s ease,background .18s ease,border-color .18s ease}.back-to-top.is-visible{transform:translateY(0) scale(1);opacity:1;pointer-events:auto}.back-to-top:hover{border-color:var(--accent);background:#292929}.back-to-top svg{width:18px;height:18px}html[data-theme="light"] body{background:var(--bg);color:var(--text)}html[data-theme="light"] .topbar{border-bottom-color:var(--line);background:rgba(245,247,251,.94);box-shadow:0 3px 18px rgba(27,39,55,.06)}html[data-theme="light"] .brand{color:#111827}html[data-theme="light"] .brand:hover{color:#245fae}html[data-theme="light"] .brand-logo{border-color:#d3dae5;box-shadow:0 3px 12px rgba(31,48,73,.14)}html[data-theme="light"] .language,html[data-theme="light"] .theme-toggle{border-color:#cfd6e0;background:#fff;color:#344054}html[data-theme="light"] .language:hover,html[data-theme="light"] .theme-toggle:hover{border-color:#8ea5c4;background:#f4f7fb;color:#162033}html[data-theme="light"] .search-wrap input{border-color:#cfd6e0;background:#fff;color:#18202b}html[data-theme="light"] .search-wrap input::placeholder{color:#7c8796}html[data-theme="light"] .search-wrap input:focus{border-color:#5f86bd;background:#fff;box-shadow:0 0 0 3px rgba(40,111,219,.12)}html[data-theme="light"] .search-wrap kbd{border-color:#d0d7e1;background:#edf1f6;color:#687486}html[data-theme="light"] .search-results{border-color:#d4dbe5;background:#fff;box-shadow:0 20px 55px rgba(27,39,55,.16)}html[data-theme="light"] .search-results a:hover,html[data-theme="light"] .search-results a.is-active{background:#eef3f9}html[data-theme="light"] #sidebar{border-right-color:var(--line);background:var(--sidebar)}html[data-theme="light"] .nav-group summary{color:#253043}html[data-theme="light"] .nav-group summary:hover,html[data-theme="light"] .nav-group[open] summary{background:#e2e7ee}html[data-theme="light"] .nav-group li a:hover{background:#e4e9f0}html[data-theme="light"] .nav-group li a.active{background:#e1ebf8;color:#1f66c2}html[data-theme="light"] pre{border-color:#d4dbe4;background:#eef1f5}html[data-theme="light"] p code,html[data-theme="light"] li code{background:#e7ebf1}html[data-theme="light"] blockquote{background:#edf2f8}html[data-theme="light"] .hint{border-color:#d5dbe4;background:#eef1f5}html[data-theme="light"] .hint-success{background:#e7f4ec}html[data-theme="light"] .step{background:rgba(24,32,43,.025)}html[data-theme="light"] .sidebar-credits-title,html[data-theme="light"] .sidebar-credit-person strong{color:#2d3748}html[data-theme="light"] .sidebar-credit-person small{color:#6d7786}html[data-theme="light"] .page-toc a:hover,html[data-theme="light"] .page-toc a.is-active{background:rgba(40,111,219,.08)}html[data-theme="light"] .back-to-top{background:rgba(255,255,255,.94);box-shadow:0 12px 34px rgba(31,48,73,.18)}html[data-theme="light"] .back-to-top:hover{background:#f3f6fa}@media(max-width:1300px){.layout{grid-template-columns:320px minmax(0,1fr)}.page-toc{display:none!important}}@media(max-width:1100px){.community-copy small{display:none}.community-badge{min-width:0;width:44px;padding:0 9px}.community-copy strong{display:none}}@media(max-width:900px){.topbar{grid-template-columns:auto minmax(0,1fr) auto auto!important}.brand{display:none}.theme-toggle{width:40px;height:40px}.reading-progress{top:60px}.back-to-top{right:16px;bottom:16px}}@media(max-width:720px){.community-badge{display:none!important}}@media(prefers-reduced-motion:reduce){.reading-progress span,.back-to-top,.theme-toggle,.brand{transition:none}html{scroll-behavior:auto}}
/* Nested sidebar groups: keep them visually below top-level categories. */
#sidebar .nav-subgroup{margin:1px 0;border:0;background:transparent}
#sidebar .nav-subgroup>summary{min-height:32px;padding:0 6px 0 0;border-radius:7px;background:transparent!important;font-size:14px!important;font-weight:500!important;letter-spacing:0!important;text-transform:none!important;color:var(--muted)!important}
#sidebar .nav-subgroup>summary:hover{background:#272727!important;color:var(--text)!important}
#sidebar .nav-subgroup>summary>a{font-size:14px!important;font-weight:500!important;line-height:1.35!important;color:inherit!important;text-transform:none!important;letter-spacing:0!important}
#sidebar .nav-subgroup>summary>a.active{font-weight:650!important;color:#66a5ff!important}
#sidebar .nav-subgroup-chevron{width:6px;height:6px;flex-basis:6px;margin-right:8px;border-width:1.25px;opacity:.78}
#sidebar .nav-subgroup>ul{margin:0 0 3px!important}
#sidebar .nav-subgroup>ul>li>a{font-size:13px!important;line-height:1.4!important;color:var(--muted)}
html[data-theme="light"] #sidebar .nav-subgroup>summary{color:#5f6978!important}
html[data-theme="light"] #sidebar .nav-subgroup>summary:hover{background:#e4e9f0!important;color:#253043!important}
html[data-theme="light"] #sidebar .nav-subgroup>summary>a.active{color:#1f66c2!important}