:root{--bg:#f3f3f3;--card:#ffffff;--card2:#f9f9f9;--fg:#1a1a1a;--muted:#444;--dim:#6b6b6b;--line:#e2e2e2;--accent:#005fb8;--accent-fg:#fff;--kbd:#ffffff;--kbd-edge:#c8c8c8;
  --body:"Yu Gothic UI","Yu Gothic",Meiryo,"Noto Sans JP","Hiragino Kaku Gothic ProN",sans-serif;--display:"Yu Gothic UI","Yu Gothic",Meiryo,"Noto Sans JP","Hiragino Kaku Gothic ProN",sans-serif;--body-en:"Segoe UI Variable Text","Segoe UI","Yu Gothic UI",Meiryo,"Noto Sans JP",sans-serif;--display-en:"Segoe UI Variable Display","Segoe UI","Yu Gothic UI",Meiryo,"Noto Sans JP",sans-serif;--mono:"Cascadia Mono",Consolas,monospace;color-scheme:light}
:root[data-lang="en"]{--body:var(--body-en);--display:var(--display-en)}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]){--bg:#202020;--card:#2b2b2b;--card2:#323232;--fg:#ffffff;--muted:#c5c5c5;--dim:#9a9a9a;--line:#3a3a3a;--accent:#60cdff;--accent-fg:#000;--kbd:#383838;--kbd-edge:#1a1a1a;color-scheme:dark}}
:root[data-theme="dark"]{--bg:#202020;--card:#2b2b2b;--card2:#323232;--fg:#ffffff;--muted:#c5c5c5;--dim:#9a9a9a;--line:#3a3a3a;--accent:#60cdff;--accent-fg:#000;--kbd:#383838;--kbd-edge:#1a1a1a;color-scheme:dark}
*{box-sizing:border-box}html{scroll-behavior:smooth}
@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto}}
body{margin:0;background:var(--bg);color:var(--fg);font:15px/1.75 var(--body)}
h1,h2,h3{font-family:var(--display);text-wrap:balance;word-break:auto-phrase}
p,li,dd{word-break:auto-phrase}
a{color:var(--accent)}a:focus-visible,button:focus-visible{outline:2px solid var(--accent);outline-offset:2px}
img{max-width:100%;height:auto}
code{font-family:var(--mono);font-size:.88em;background:var(--card2);border:1px solid var(--line);padding:0 .35em;border-radius:4px}
kbd{font-family:var(--body);font-size:.82em;font-weight:600;display:inline-block;min-width:1.9em;text-align:center;padding:.05em .45em;margin:0 .08em;border-radius:5px;background:var(--kbd);border:1px solid var(--line);border-bottom-color:var(--kbd-edge);box-shadow:inset 0 -1px 0 var(--kbd-edge);color:var(--fg);line-height:1.5;white-space:nowrap}
.shot{width:100%;display:block;border-radius:6px;border:1px solid var(--line)}.shot-link{display:block;cursor:zoom-in}
.store{display:inline-flex;border-radius:5px}.store img{display:block;height:36px;width:auto}.store .on-light{display:none}
:root[data-theme="light"] .store .on-light{display:block}:root[data-theme="light"] .store .on-dark{display:none}
@media (prefers-color-scheme: light){:root:not([data-theme="dark"]) .store .on-light{display:block}:root:not([data-theme="dark"]) .store .on-dark{display:none}}
.tools{display:flex;gap:6px}.tool{height:36px;min-width:36px;display:grid;place-items:center;border-radius:6px;border:1px solid var(--line);background:var(--card);color:var(--fg);cursor:pointer;padding:0 8px;font:600 13px/1 var(--body)}
.tool:hover{background:var(--card2)}
.theme svg{width:18px;height:18px}.theme .sun{display:none}
:root[data-theme="dark"] .theme .sun{display:block}:root[data-theme="dark"] .theme .moon{display:none}
@media (prefers-color-scheme: dark){:root:not([data-theme="light"]) .theme .sun{display:block}:root:not([data-theme="light"]) .theme .moon{display:none}}
.tool.lang{display:inline-flex;align-items:center;gap:6px;padding:0 8px 0 10px}.tool.lang svg{width:16px;height:16px;flex:none}
.tool.lang svg.chev{width:12px;height:12px;color:var(--dim)}.tool.lang[aria-expanded="true"] svg.chev{transform:rotate(180deg)}
.langmenu{position:relative}
.lang-list{position:absolute;right:0;top:calc(100% + 4px);min-width:140px;margin:0;padding:4px;list-style:none;background:var(--card);border:1px solid var(--line);border-radius:8px;box-shadow:0 8px 24px rgba(0,0,0,.28);z-index:30}
.lang-list[hidden]{display:none}
.lang-list a{display:flex;align-items:center;gap:8px;padding:7px 10px;border-radius:5px;color:var(--fg);text-decoration:none;font-size:14px}
.lang-list a::before{content:"";width:3px;height:14px;border-radius:2px;background:transparent}
.lang-list a[aria-current="true"]::before{background:var(--accent)}
.lang-list a:hover,.lang-list a:focus-visible{background:var(--card2);outline:none}
.skip{position:absolute;left:-9999px}.skip:focus{left:16px;top:12px;z-index:40;background:var(--card);padding:6px 10px;border-radius:5px}
html.en-pending body{visibility:hidden}

/* layout: fixed left navigation like the Windows Settings app, content column up to 1040px */
.tools{position:fixed;top:14px;right:18px;z-index:10}
.shell{display:grid;grid-template-columns:240px minmax(0,1fr);min-height:100vh}
aside{position:sticky;top:0;height:100vh;padding:14px 10px;border-right:1px solid var(--line)}
.brand{display:flex;gap:10px;align-items:center;padding:6px 10px 18px;font-size:13px;color:var(--muted)}.brand img{width:20px;height:20px}
aside .grp{font-size:12px;font-weight:600;letter-spacing:.06em;color:var(--dim);margin:14px 0 2px;padding:10px 12px 2px;border-top:1px solid color-mix(in srgb,var(--fg) 14%,transparent);cursor:default;user-select:none}aside .grp~a{margin-left:20px;padding-left:14px;border-left:1px solid color-mix(in srgb,var(--fg) 18%,transparent);border-radius:0 5px 5px 0}aside .grp~a.on::before{left:-2px}aside .brand+.grp{border-top:0;margin-top:2px;padding-top:6px}
aside a{display:block;padding:7px 12px;border-radius:5px;color:var(--fg);text-decoration:none;font-size:14px;position:relative}
aside a:hover{background:var(--card)}
aside a.on{background:var(--card)}aside a.on::before{content:"";position:absolute;left:0;top:9px;bottom:9px;width:3px;border-radius:2px;background:var(--accent)}
main{padding:36px 44px 96px;max-width:1040px}
h1{font-size:30px;font-weight:600;margin:0 0 6px}h2{font-size:20px;font-weight:600;margin:48px 0 12px}h3{font-size:15px;font-weight:600;margin:0}
.sub{color:var(--muted);margin:0 0 4px;max-width:46em}.dim{color:var(--dim);font-size:13px;margin:0}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center;margin:18px 0 26px}
.card{background:var(--card);border:1px solid var(--line);border-radius:8px;padding:16px 18px}
.stack{display:grid;gap:4px}
.exp{padding:0}.exp>.head{display:grid;grid-template-columns:minmax(0,1fr) 300px;gap:20px;padding:16px 18px;align-items:center}
.exp p{margin:2px 0 0;color:var(--muted);font-size:14px}
.others{margin:12px 0 0;padding-left:1.2em;color:var(--muted);font-size:14px}
.gal{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:10px}.gal figure{margin:0}.gal figcaption{font-size:12px;color:var(--dim);margin-top:4px}
ol.steps{margin:0;padding:0;list-style:none;counter-reset:n}ol.steps li{counter-increment:n;display:grid;grid-template-columns:28px 1fr;gap:10px;padding:10px 0;border-top:1px solid var(--line)}ol.steps li:first-child{border-top:0}
ol.steps li::before{content:counter(n);width:24px;height:24px;border-radius:50%;background:var(--card2);border:1px solid var(--line);display:grid;place-items:center;font-size:12px}
table.keys{width:100%;border-collapse:collapse;font-size:14px}table.keys th,table.keys td{padding:8px 4px;text-align:left;border-top:1px solid var(--line)}table.keys tr:first-child th,table.keys tr:first-child td{border-top:0}table.keys th{width:11em;font-weight:400}
.tips{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:8px}.tips p{margin:4px 0 0;color:var(--muted);font-size:14px}
details{background:var(--card);border:1px solid var(--line);border-radius:8px;margin-bottom:4px}summary{cursor:pointer;padding:12px 18px;font-weight:600;list-style:none;display:flex;justify-content:space-between;gap:12px}
summary::-webkit-details-marker{display:none}summary::after{content:"⌄";color:var(--dim)}details[open] summary::after{content:"⌃"}details p{margin:0;padding:0 18px 14px;color:var(--muted)}
.foot{margin-top:56px;color:var(--dim);font-size:13px}.foot nav{display:flex;gap:16px;flex-wrap:wrap}.foot p{margin:6px 0 0}
@media (max-width:860px){.tools{position:static;justify-content:flex-end;padding:8px 10px 0}.shell{grid-template-columns:1fr}aside{position:static;height:auto;display:flex;overflow-x:auto;gap:4px;padding:8px;border-right:0;border-bottom:1px solid var(--line)}aside .grp,.brand{display:none}aside .grp~a{margin-left:0;padding-left:12px;border-left:0;border-radius:5px}aside a{white-space:nowrap}main{padding:24px 16px 80px}.exp>.head{grid-template-columns:1fr}.tips{grid-template-columns:1fr}.gal{grid-template-columns:1fr 1fr}}
:root:not([data-lang="en"]) [data-lang-block="en"]{display:none}:root[data-lang="en"] [data-lang-block="ja"]{display:none}
.doc{padding:22px 26px}.doc>:first-child{margin-top:0}.doc>:last-child{margin-bottom:0}.doc p{color:var(--muted);margin:0 0 14px}
.doc h3{font-size:15px;margin:28px 0 8px}.doc .note{font-size:13px;color:var(--dim)}
.table-wrap{overflow-x:auto;margin:12px 0 24px}.doc table{width:100%;border-collapse:collapse;font-size:14px}
.doc th,.doc td{padding:9px 10px;text-align:left;vertical-align:top;border-bottom:1px solid var(--line)}.doc th{background:var(--card2);font-weight:600;white-space:nowrap}
.doc td:first-child{white-space:nowrap}
.doc pre{margin:12px 0 20px;padding:14px 16px;overflow-x:auto;background:var(--card2);border:1px solid var(--line);border-radius:6px;line-height:1.6}.doc pre code{border:0;background:none;padding:0;font-size:13px}
.copy-button{appearance:none;border:1px solid var(--line);border-radius:5px;background:var(--card2);color:var(--fg);padding:3px 10px;font:13px/1.4 var(--body);cursor:pointer;white-space:nowrap}
.copy-button:hover{border-color:var(--accent)}.copy-button.copied{border-color:var(--accent);color:var(--accent)}
.release ul{margin:10px 0 0;padding-left:1.2em;color:var(--muted);font-size:14px}.release li+li{margin-top:4px}.release .version{font-family:var(--mono);font-size:13px;color:var(--dim)}.release p{margin:12px 0 0;font-size:14px}
.foot nav a{color:var(--dim)}.foot nav a:hover{color:var(--accent)}