/* Shared foundations: palette, typography, controls and navigation. */
:root{--paper:#0c1421;--surface:#142132;--surface-soft:#1b2c40;--ink:#edf3fa;--muted:#acbdd0;--line:#354b63;--accent:#88c7f4;--action:#efbc67;--action-ink:#20170b;--success:#8fdfb5;--warning:#f2c77e;--purple:var(--accent);--mint:var(--action);--nav:#101b2a;--header-height:64px;--dock-height:64px;--sidebar-width:208px;--mono:ui-monospace,SFMono-Regular,Consolas,monospace;font-family:Inter,ui-sans-serif,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--paper);color-scheme:dark;font-synthesis:none}
html[data-theme=light]{--paper:#f4f6f8;--surface:#fff;--surface-soft:#e9eff4;--ink:#203045;--muted:#52657a;--line:#c6d2df;--accent:#17618c;--success:#176843;--warning:#86520b;color-scheme:light}
*{box-sizing:border-box}body{margin:0;font-size:15px;line-height:1.6}a{color:inherit;text-decoration:none}a:hover{color:var(--accent)}button,input,select,textarea{font:inherit;color:inherit}button{cursor:pointer}button:disabled{cursor:default;opacity:.55}
button,input:not([type=checkbox]):not([type=radio]),select{min-height:42px}
input:not([type=checkbox]):not([type=radio]),select,textarea{width:100%;border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:9px 11px;font-size:14px;color:var(--ink)}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:.85}textarea{resize:vertical}input[type=checkbox],input[type=radio]{accent-color:var(--accent);width:18px;height:18px;min-height:18px;flex-shrink:0}
button,a,input,select,textarea,summary{outline-offset:3px}:is(a,button,input,select,textarea,summary):focus-visible{outline:3px solid var(--accent)}[hidden]{display:none!important}
h1,h2,h3{line-height:1.25;overflow-wrap:anywhere}h1{font-size:32px;letter-spacing:-.8px}h2{font-size:23px;letter-spacing:-.4px}h3{font-size:18px}p{margin:0 0 16px}small{font-size:13px}
button{border:1px solid var(--line);border-radius:6px;background:var(--surface);padding:8px 12px}button:not(:disabled):hover{border-color:var(--accent)}
.button,.secondary-button,.walk-secondary,.item-action{display:inline-flex;align-items:center;justify-content:center;gap:8px;min-height:42px;padding:9px 15px;font-size:14px;font-weight:600;border-radius:6px}
.button,.item-action{background:var(--action);color:var(--action-ink);border:1px solid transparent}.button:hover,.item-action:hover{background:color-mix(in srgb,var(--action) 85%,white);color:var(--action-ink)}
.secondary-button,.walk-secondary{background:var(--surface);color:var(--ink);border:1px solid var(--line)}.secondary-button:hover,.walk-secondary:hover{border-color:var(--accent);color:var(--accent)}
.text-link{color:var(--accent);font-weight:600;font-size:14px}.text-link:hover{text-decoration:underline}.clear-button{background:transparent;border:0;padding:6px;color:var(--accent);font-size:13px}
details{border:1px solid var(--line);border-radius:7px;padding:14px 16px;background:var(--surface);margin:16px 0}summary{cursor:pointer;font-weight:600;font-size:14px;min-height:30px;align-content:center}details[open]>summary{margin-bottom:12px}
code,kbd{font-family:var(--mono)}kbd{font-size:11px;border:1px solid var(--line);border-radius:3px;padding:1px 5px}
.topbar{height:var(--header-height);position:sticky;top:0;z-index:30;display:flex;align-items:center;gap:16px;padding:0 24px;border-bottom:1px solid var(--line);background:var(--paper)}
.brand{display:flex;align-items:center;justify-content:center;flex-shrink:0;min-height:44px;border-radius:4px}.brand img{display:block;width:180px;height:60px;object-fit:contain}
.top-search{display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:440px;min-width:200px;margin-left:auto;flex:1;min-height:40px;padding:7px 12px;border:1px solid var(--line);border-radius:6px;color:var(--muted);font-size:14px;background:var(--surface)}
.theme-toggle{width:40px;min-height:40px;padding:0;font-size:23px;flex-shrink:0}.languages{display:flex;align-items:center;gap:2px;flex-shrink:0}.language-link{display:grid;place-items:center;min-width:32px;min-height:40px;font-size:13px;border-radius:4px}.language-link[aria-current]{background:var(--surface-soft);color:var(--accent);font-weight:700}.global-character{max-width:150px}.global-character select{font-size:13px}
.layout{display:flex;min-height:calc(100dvh - var(--header-height))}
.sidebar{width:var(--sidebar-width);flex-shrink:0;position:sticky;top:var(--header-height);height:calc(100dvh - var(--header-height));display:flex;flex-direction:column;overflow:auto;padding:24px 12px;background:var(--nav);color:#d8e5f4;border-right:1px solid #293c51}
.nav-label{font-size:11px;letter-spacing:1.2px;font-weight:600;color:#aabdd2;margin:0 12px 12px}.sidebar nav{display:grid;gap:4px}.sidebar nav>a{display:flex;align-items:center;gap:10px;min-height:44px;padding:9px 11px;border-radius:5px;font-size:14px;color:#c0d0e2}.sidebar nav>a:hover{background:#1c3046;color:white}.sidebar nav>a[aria-current]{color:#b4dcfa;background:#20374f;box-shadow:inset 3px 0 #8bcafa}.sidebar nav small{margin-left:auto;color:#acc1d6;font-size:12px}.nav-symbol{display:inline-flex;align-items:center;justify-content:center;width:20px;flex-shrink:0}
.developer-navigation{margin:24px 0 0;padding:10px 0 0;background:transparent;border:0;border-top:1px solid #2b3f55;border-radius:0}.developer-navigation>summary{padding:10px 12px;color:#b6c8dc;font-size:13px}.developer-navigation nav>a{font-size:13px}
.locked-documentation{margin-top:24px;padding-top:18px;border-top:1px solid #2b3f55;color:#aabdd2}.locked-documentation-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;margin:0 10px 8px}.locked-documentation h2{font-size:11px;letter-spacing:.4px;text-transform:uppercase;margin:0;font-weight:600}.locked-documentation-heading>span{font-size:10px;color:#aabdd2}.locked-documentation ul{list-style:none;margin:0;padding:0}.locked-documentation li{display:grid;grid-template-columns:14px minmax(0,1fr) auto;align-items:center;gap:8px;padding:10px;font-size:13px;line-height:1.45;cursor:default}.locked-documentation li>svg{color:#8da5bf}.locked-documentation li>span{overflow-wrap:anywhere}.locked-documentation small{font-size:10px;white-space:nowrap;padding:2px 5px;border:1px solid #30455c;border-radius:4px;background:#192a3d;color:#b9cade}.locked-documentation small b{font-size:11px;font-weight:500;font-variant-numeric:tabular-nums}
.sidebar-bottom{margin:auto 10px 0;padding-top:28px;display:grid;gap:12px;color:#aabdd2;font-size:12px}.sidebar-bottom span{font-size:10px;letter-spacing:1px;line-height:1.8}
.main{width:100%;min-width:0;max-width:1480px;margin:0 auto;padding:26px 30px 0}.article-main{max-width:1050px}
.toc{position:sticky;top:var(--header-height);height:calc(100dvh - var(--header-height));overflow:auto;width:210px;flex-shrink:0;padding:32px 20px 24px 0}.toc .nav-label{color:var(--muted);margin-left:0}.toc>a{display:block;padding:9px 0 9px 14px;border-left:1px solid var(--line);color:var(--muted);font-size:13px}.toc>a:hover{border-color:var(--accent);color:var(--accent)}.toc-note{padding-top:16px;margin-top:20px;border-top:1px solid var(--line);font-size:13px;color:var(--accent)}
.mobile-toc,.mobile-dock,.menu-button{display:none}.eyebrow{font-size:11px;font-weight:650;letter-spacing:1.4px;color:var(--accent);text-transform:uppercase}.page-title{font-size:32px;line-height:1.2;margin:8px 0 12px;letter-spacing:-.8px}.lede{font-size:15px;color:var(--muted);max-width:800px;line-height:1.65;margin-bottom:20px}.breadcrumb,.walk-crumb,.item-breadcrumb{font-size:13px;color:var(--muted);margin-bottom:14px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:16px;margin:28px 0 14px}.section-head h2{font-size:22px;margin:0}.section-head a{font-size:14px;color:var(--accent)}.page-tools{display:flex;justify-content:flex-end;align-items:center;gap:12px;margin:28px 0 0;font-size:13px}.page-tools [aria-pressed=true]{color:var(--accent);background:var(--surface-soft)}
.entry-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:14px}.searchable{display:flex;min-width:0}.searchable>.entry-card{width:100%}.entry-card{min-width:0;display:flex;flex-direction:column;padding:20px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}.entry-card:hover{border-color:var(--accent)}.entry-top{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.selector{font:12px var(--mono);padding:4px 6px;border-radius:4px;background:var(--surface-soft);color:var(--accent);border:1px solid var(--line)}.badge{font-size:12px;color:var(--muted)}.badge.reviewed{color:var(--success)}.entry-card h3{font-size:17px;line-height:1.4;margin:12px 0 8px}.entry-card p{font-size:14px;line-height:1.65;color:var(--muted);margin:0 0 14px}.entry-footer{display:flex;justify-content:space-between;margin-top:auto;color:var(--muted);font-size:12px}.entry-footer>span{color:var(--accent)}
.filter-form{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 12px;padding:14px 0;border-block:1px solid var(--line)}.filter-field{display:grid;gap:6px;flex:1;min-width:140px}.filter-field.search-field{flex:3;min-width:200px}.filter-field label{font-size:13px;color:var(--muted)}.result-meta{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:13px;color:var(--muted);margin:12px 0}.empty-state{padding:32px 20px;text-align:center;border:1px dashed var(--line);border-radius:7px;background:var(--surface)}.empty-state p{color:var(--muted)}
.article-header{padding-bottom:18px;margin-bottom:20px;border-bottom:1px solid var(--line)}.article-meta{display:flex;gap:12px;flex-wrap:wrap;align-items:center;font-size:13px;color:var(--muted)}.article{max-width:78ch;font-size:16px;line-height:1.85;overflow-wrap:anywhere}.article h2{font-size:24px;margin:32px 0 14px;scroll-margin-top:calc(var(--header-height) + 20px)}.article h3{font-size:19px;margin:24px 0 12px;scroll-margin-top:calc(var(--header-height) + 20px)}.article p{margin:16px 0}.article ul,.article ol{padding-left:24px}.article li{margin:8px 0}.article a{color:var(--accent);text-decoration:underline;text-underline-offset:3px;text-decoration-color:color-mix(in srgb,var(--accent) 50%,transparent)}.article code:not(pre code){font: .87em var(--mono);padding:2px 5px;border-radius:3px;background:var(--surface-soft);color:var(--accent)}
.article-summary{margin:20px 0;padding:16px 0;border-bottom:1px solid var(--line);font-size:16px}.article-summary>p{margin:0}.callout{padding:14px 18px;border-left:3px solid var(--accent);background:var(--surface-soft);border-radius:0 5px 5px 0;font-size:14px;line-height:1.8;margin:20px 0}
.table-scroll{overflow:auto;border:1px solid var(--line);border-radius:6px;background:var(--surface);margin:18px 0}table{width:100%;border-collapse:collapse;text-align:left;font-size:14px;line-height:1.6}th,td{padding:12px 14px;border-bottom:1px solid var(--line);vertical-align:top}th{background:var(--surface-soft);font-weight:600}tbody th{background:transparent}tr:last-child :is(th,td){border-bottom:0}td{font-variant-numeric:tabular-nums}.article .table-scroll table{min-width:540px}
.code-block{position:relative;margin:20px 0;border:1px solid #35485f;border-radius:6px;background:#0c1625}.code-block pre{margin:0;padding:48px 20px 20px;overflow:auto;color:#dfebf7;font:13px/1.75 var(--mono)}.copy-code{position:absolute;right:10px;top:9px;min-height:32px;padding:5px 9px;font-size:12px;color:#e3eef9;background:#24384f;border-color:#49627e}
.coverage-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;margin:24px 0}.coverage-box{padding:22px;border:1px solid var(--line);border-radius:7px;background:var(--surface)}.coverage-box>strong{display:block;font-size:34px}.coverage-box p{color:var(--muted);font-size:14px}.coverage-box.reviewed{border-top:3px solid var(--success)}.coverage-box.request{border-top:3px solid var(--accent)}
dialog{background:var(--surface);color:var(--ink);border:1px solid var(--line);border-radius:10px;padding:24px;max-width:min(850px,calc(100vw - 24px));max-height:calc(100dvh - 32px);overflow:auto}dialog::backdrop{background:#050b16c9}.dialog-heading{display:flex;align-items:center;justify-content:space-between;gap:20px}.dialog-heading h2{font-size:20px;margin:0}dialog img{display:block;object-fit:contain;max-width:100%;max-height:65dvh;width:auto;height:auto;margin:20px auto}dialog p{font-size:14px;color:var(--muted)}
footer{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;border-top:1px solid var(--line);margin-top:40px;padding:22px 0;font-size:12px;color:var(--muted)}.site-footer{justify-content:flex-end}.site-footer small{font-size:12px}.skip-link{position:fixed;top:-70px;left:12px;z-index:100;background:var(--surface);padding:12px;border:1px solid var(--accent)}.skip-link:focus{top:10px}.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}
@media(max-width:1200px){.toc{display:none}.mobile-toc{display:block;margin:12px 0}.mobile-toc nav{display:grid;gap:8px;padding-top:10px}.mobile-toc a{font-size:14px;color:var(--muted)}.entry-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.global-character{display:none}.main{padding:24px 24px 0}}
@media(max-width:820px){.sidebar{display:none;position:fixed;left:0;z-index:29;width:280px;padding-bottom:90px;box-shadow:12px 0 32px #0005}.sidebar.open{display:flex}.menu-button{display:block;min-height:40px;font-size:13px}.main{padding:20px 20px 0}.topbar{gap:10px;padding:0 16px}.top-search{min-width:0}.top-search kbd{display:none}.mobile-dock{position:fixed;bottom:0;left:0;right:0;z-index:25;display:grid;grid-template-columns:repeat(4,1fr);min-height:var(--dock-height);padding:5px 8px max(5px,env(safe-area-inset-bottom));border-top:1px solid var(--line);background:var(--paper)}.mobile-dock>a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:50px;font-size:12px;color:var(--muted);border-radius:5px}.mobile-dock>a[aria-current]{color:var(--accent);background:var(--surface-soft)}.layout{padding-bottom:calc(var(--dock-height) + env(safe-area-inset-bottom))}.article{max-width:100%}}
@media(max-width:600px){.main{padding:18px 16px 0}.top-search{display:none}.topbar{padding:0 10px;gap:7px}.brand img{width:clamp(128px,calc(100vw - 188px),180px);height:auto}.languages{margin-left:auto}.theme-toggle{width:34px}.language-link{min-width:27px;font-size:12px}.menu-button{padding:7px 9px;font-size:12px}.entry-grid,.coverage-grid{grid-template-columns:1fr}.page-title{font-size:28px}.lede{font-size:14px}.filter-field.search-field{min-width:100%}.section-head h2{font-size:20px}.section-head a{font-size:13px}.article h2{font-size:22px}.code-block pre{font-size:12px;padding-inline:14px}dialog{padding:18px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;transition:none!important;animation:none!important}}
@media print{.sidebar,.toc,.topbar,.mobile-dock,.copy-code,.page-tools,footer{display:none!important}:root,html[data-theme]{--paper:white;--surface:white;--surface-soft:#eee;--ink:black;--muted:#333;--line:#aaa;color-scheme:light}.main{max-width:none;padding:0}.layout{display:block;padding:0}.article{font-size:12pt;max-width:none}.code-block{background:white}.code-block pre{color:black;white-space:pre-wrap}}