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body{min-height:100vh;color:var(--text);letter-spacing:0;margin:0;font-family:Source Sans Pro,Hiragino Sans GB,Microsoft YaHei,SimSun,Helvetica,Arial,sans-serif;font-size:14px;line-height:1.6}a{color:inherit;text-decoration:none}button,input,textarea{font:inherit;letter-spacing:0}button,summary,a{-webkit-tap-highlight-color:#0000}button{color:inherit}img{max-width:100%}::selection{color:#fff;background:#4ea46a}:focus-visible{outline-offset:3px;outline:2px solid #858b98}.sr-only{clip:rect(0, 0, 0, 0);white-space:nowrap;border:0;width:1px;height:1px;margin:-1px;padding:0;position:absolute;overflow:hidden}@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important;animation-duration:.01ms!important;animation-iteration-count:1!important}}
:root[data-tone=dim]{--sidebar-bg:#212121;--sidebar-text:#888;--sidebar-active:#aaa;--text:#aaa;--muted:#777;--surface:#212121;--surface-strong:#212121;--surface-border:#ffffff1a;--card-surface:#000c;--input-surface:#10131a70;--lightningcss-light: ;--lightningcss-dark:initial;color-scheme:dark}html[data-tone=dim]{background:#191919}:root[data-tone=dim] .top-nav,:root[data-tone=dim] .top-brand{background:#212121}:root[data-tone=dim] .top-search{background:#191919}:root[data-tone=dim] .left-sidebar{color:#888;background:#212121}:root[data-tone=dim] .sidebar-link{color:#888}:root[data-tone=dim] .sidebar-link:hover,:root[data-tone=dim] .sidebar-link.active{color:#aaa;background:#252525}:root[data-tone=dim] .sidebar-subnav a{color:#888}:root[data-tone=dim] .sidebar-subnav a:hover,:root[data-tone=dim] .sidebar-toolbar a:hover,:root[data-tone=dim] .sidebar-toolbar button:hover{color:#fff}:root[data-tone=dim] .sidebar-subnav small{color:#666}@media (min-width:768px){:root[data-tone=dim] .sidebar-folded .sidebar-subnav{background:#191919;box-shadow:0 2px 6px #0000007a}:root[data-tone=dim] .sidebar-folded .sidebar-subnav a:hover{color:#aaa;background:#252525}}:root[data-tone=dim] .sidebar-toolbar{background:#252525;border-color:#191919}:root[data-tone=dim] .sidebar-toolbar a,:root[data-tone=dim] .sidebar-toolbar button{color:#888}:root[data-tone=dim] .right-rail{background:#191919e6}:root[data-tone=dim] .post-pagination li{background:#212121}:root[data-tone=dim] .post-pagination ol{box-shadow:0 1px 2px #0000004d}:root[data-tone=dim] .post-pagination li{border-color:#ffffff1f}:root[data-tone=dim] .post-pagination a,:root[data-tone=dim] .post-pagination-ellipsis{color:#aeb4be}:root[data-tone=dim] .post-pagination li.current{background:#000;border-color:#000}:root[data-tone=dim] .post-pagination li.current a,:root[data-tone=dim] .post-pagination li.next a{color:#fff}:root[data-tone=dim] .mobile-tool-icon .tone-light{display:none}:root[data-tone=dim] .mobile-tool-icon .tone-dark{display:block}:root[data-tone=dim] .mobile-tool-button{color:#c4cbd5;background:#20242e;box-shadow:0 1px 4px #00000059}
:root{--field-focus-color:#9a9eaa}html[data-tone=dim]{--field-focus-color:#939cab}html body :is(input:not([type=checkbox]):not([type=radio]):not([type=range]):not([type=color]):not([type=button]):not([type=submit]),textarea,select):is(:focus,:focus-visible){border-color:var(--field-focus-color);box-shadow:none;outline:0}html body .top-search input:is(:focus,:focus-visible){box-shadow:none;border-color:#0000}html body .top-search:focus-within{background-color:#e8e8f1}html[data-tone=dim] body .top-search:focus-within{background-color:#353b4a}.session-expired{max-width:440px;margin:18vh auto;padding:24px}