*,::before,::after{box-sizing:border-box;margin:0;padding:0}
html{font-size:16px;-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","Noto Sans",Helvetica,Arial,sans-serif,"Apple Color Emoji","Segoe UI Emoji";line-height:1.6;color:#1f2328;background:#ffffff}
a{color:#0969da;text-decoration:none}
a:hover{text-decoration:underline}
.sidebar{position:fixed;top:0;left:0;width:326px;height:100vh;background:#f6f8fa;border-right:1px solid #d0d7de;overflow-y:auto;z-index:30;padding:0 0 96px;transition:transform .3s cubic-bezier(.4,0,.2,1);-webkit-overflow-scrolling:touch}
.sidebar.closed{transform:translateX(-100%)}
@media(min-width:1024px){.sidebar{transform:none!important}}
.sidebar-header{padding:16px 20px;border-bottom:1px solid #d0d7de;display:flex;align-items:center;justify-content:space-between;gap:8px;flex-wrap:wrap}
.sidebar-header h1{font-size:16px;font-weight:600;color:#1f2328;letter-spacing:-.01em;line-height:1.3}
.sidebar-header-link{display:flex;align-items:center;gap:6px;color:#1f2328;flex-shrink:0}
.sidebar-header-link:hover{color:#0969da;text-decoration:none}
.sidebar-header-link svg{width:18px;height:18px;flex-shrink:0}
.sidebar-header-badges{display:flex;align-items:center;gap:4px}
.sidebar-header-badges img{height:18px}
.sidebar-nav{font-size:14px;padding:8px 0}
.nav-part{padding:12px 20px 4px;font-weight:600;color:#656d76;font-size:11px;letter-spacing:.5px;text-transform:uppercase}
.nav-module{display:flex;align-items:center;gap:4px;padding:6px 20px;font-weight:600;color:#1f2328;font-size:14px;margin-top:4px;border-radius:4px;transition:color .12s ease;cursor:pointer;user-select:none}
.nav-module:hover{color:#0969da;text-decoration:none}
.nav-module-chevron{flex-shrink:0;width:16px;font-size:12px;color:#656d76;transition:color .12s}
.nav-module:hover .nav-module-chevron{color:#0969da}
.nav-topic{display:flex;align-items:flex-start;padding:4px 20px 4px 32px;color:#1f2328;cursor:pointer;border-left:0;font-size:14px;border-radius:0 4px 4px 0;transition:none}
.nav-topic:hover{background:#eaeef2;text-decoration:none}
.nav-topic.active{background:#ddf4ff;color:#0969da;font-weight:500}
.nav-topic-num{color:#656d76;margin-right:6px;min-width:20px;font-weight:500;font-size:12px}
.nav-subtopic{padding:3px 20px 3px 48px;color:#656d76;cursor:pointer;font-size:13px;display:block;border-radius:0 4px 4px 0}
.nav-subtopic:hover{color:#0969da;text-decoration:none}
.main{margin-left:326px;min-height:100vh}
@media(max-width:1023px){.main{margin-left:0}}
.topbar{position:sticky;top:0;z-index:31;background:#ffffff;border-bottom:1px solid #d0d7de;padding:0 24px;display:flex;align-items:center;gap:12px;height:56px;width:100%}
.menu-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #d0d7de;border-radius:6px;background:#f6f8fa;cursor:pointer;flex-shrink:0;color:#1f2328;transition:background .12s,border-color .12s}
.menu-btn:hover{background:#eaeef2}
.scroll-to-top{position:fixed;right:32px;bottom:32px;width:40px;height:40px;border:1px solid #d0d7de;border-radius:8px;background:#ffffff;color:#1f2328;cursor:pointer;display:flex;align-items:center;justify-content:center;opacity:0;visibility:hidden;transform:translateY(8px);transition:opacity .2s,visibility .2s,transform .2s,box-shadow .2s;box-shadow:0 1px 3px rgba(31,35,40,.12);z-index:25}
.scroll-to-top.show{opacity:1;visibility:visible;transform:translateY(0)}
.scroll-to-top:hover{background:#f6f8fa;box-shadow:0 3px 8px rgba(31,35,40,.16)}
.scroll-to-top svg{width:18px;height:18px}
@media(max-width:1023px){.scroll-to-top{right:20px;bottom:20px}}
.theme-toggle{margin-left:auto;display:flex;align-items:center;justify-content:center;width:36px;height:36px;border:1px solid #d0d7de;border-radius:6px;background:#f6f8fa;cursor:pointer;color:#1f2328;transition:background .12s,border-color .12s}
.theme-toggle:hover{background:#eaeef2}
.theme-toggle svg{width:18px;height:18px}

@media(min-width:1024px){.menu-btn{display:none}}
.menu-btn svg{width:18px;height:18px}
.topbar-title{font-size:14px;font-weight:500;color:#656d76;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.content{padding:40px 48px 80px;max-width:1012px;margin:0 auto}
.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{scroll-margin-top:88px}
@media(max-width:768px){.content{padding:24px 16px 64px}}
.markdown-body{font-size:16px;line-height:1.6;overflow-wrap:break-word;color:#1f2328}
.markdown-body::before{display:table;content:""}
.markdown-body::after{display:table;clear:both;content:""}
.markdown-body>*:first-child{margin-top:0!important}
.markdown-body>*:last-child{margin-bottom:0!important}
.markdown-body a:not([href]){color:inherit;text-decoration:none}
.markdown-body h1{font-size:32px;font-weight:600;margin:32px 0 20px;padding-bottom:8px;line-height:1.25;letter-spacing:-.02em}
.markdown-body h2{font-size:24px;font-weight:600;margin:28px 0 16px;padding-bottom:8px;line-height:1.3;letter-spacing:-.01em}
.markdown-body h3{font-size:20px;font-weight:600;margin:24px 0 12px;line-height:1.4}
.markdown-body h4{font-size:16px;font-weight:600;margin:20px 0 8px;line-height:1.5}
.markdown-body h5{font-size:14px;font-weight:600;margin:16px 0 8px;line-height:1.5;color:#656d76}
.markdown-body h6{font-size:14px;font-weight:400;margin:16px 0 8px;line-height:1.5;color:#656d76}
.markdown-body p,.markdown-body blockquote,.markdown-body ul,.markdown-body ol,.markdown-body dl,.markdown-body table,.markdown-body pre,.markdown-body details{margin-bottom:16px}
.markdown-body img{max-width:100%;box-sizing:content-box}
.markdown-body ul,.markdown-body ol{padding-left:2em}
.markdown-body li+li{margin-top:4px}
.markdown-body li>p{margin-top:12px}
.markdown-body code{font-family:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,monospace;background:rgba(175,184,193,.2);padding:3px 6px;border-radius:6px;font-size:85%;white-space:break-spaces;color:#1f2328}
.markdown-body pre{margin-bottom:16px;padding:20px;border-radius:8px;overflow-x:auto;line-height:1.45;font-size:85%;background:#f6f8fa;border:1px solid #d0d7de}
.markdown-body pre code{background:transparent;padding:0;margin:0;overflow:visible;line-height:inherit;word-wrap:normal;font-size:100%;color:inherit;border:0;white-space:pre}
.markdown-body table{display:block;width:max-content;max-width:100%;overflow-x:auto;margin-bottom:16px;border-spacing:0;border-collapse:collapse;font-size:14px}
.markdown-body table thead{background:#f6f8fa}
.markdown-body th,.markdown-body td{padding:8px 16px;border:1px solid #d0d7de;text-align:left}
.markdown-body th{font-weight:600}
.markdown-body tr{background:#ffffff;border-top:1px solid #d0d7de}
.markdown-body tr:nth-child(2n){background:#f6f8fa}
.markdown-body blockquote{margin-bottom:16px;padding:0 16px;color:#656d76;border-left:4px solid #d0d7de}
.markdown-body blockquote p{margin-bottom:8px}
.markdown-body blockquote>:first-child{margin-top:0}
.markdown-body blockquote>:last-child{margin-bottom:0}
.markdown-body hr{height:1px;padding:0;margin:32px 0;background:#d0d7de;border:0}
.markdown-body strong{font-weight:600}
.heading-anchor{float:left;padding-right:6px;margin-left:-24px;line-height:1;color:#0969da;opacity:0;transition:opacity .12s;text-decoration:none}
h1:hover .heading-anchor,h2:hover .heading-anchor,h3:hover .heading-anchor,h4:hover .heading-anchor{opacity:1}
.sidebar-overlay{display:none;position:fixed;inset:0;background:rgba(31,35,40,.5);z-index:25;-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
.sidebar-overlay.show{display:block}
@media(max-width:1023px){
  body.sidebar-open{overflow:hidden}
  .nav-topic{padding:6px 20px 6px 32px}
  .nav-subtopic{padding:4px 20px 4px 48px}
  .menu-btn{width:44px;height:44px}
}
@media(min-width:1024px){.sidebar-overlay{display:none!important}}
.search-box{padding:16px 20px 12px}
.search-box input{width:100%;padding:6px 12px;font-size:14px;border:1px solid #d0d7de;border-radius:6px;background:#ffffff;outline:none;color:#1f2328;transition:border-color .12s,box-shadow .12s}
.search-box input:focus{border-color:#0969da;box-shadow:0 0 0 3px rgba(9,105,218,.15)}
.search-box input::placeholder{color:#656d76}
.star-banner{display:flex;align-items:center;gap:6px;padding:10px 24px;font-size:13px;background:#fff8c5;border-bottom:1px solid #d0d7de;color:#1f2328;flex-wrap:wrap}
.star-banner a{font-weight:600;white-space:nowrap}
.star-banner a:hover{text-decoration:underline}
.star-banner-close{margin-left:auto;background:none;border:none;font-size:20px;cursor:pointer;color:#656d76;padding:0 4px;line-height:1;flex-shrink:0;align-self:center}
.star-banner-close:hover{color:#1f2328}
@media(max-width:639px){.star-banner{padding:8px 12px;font-size:12px;gap:4px}}
.sidebar::-webkit-scrollbar{width:8px}
.sidebar::-webkit-scrollbar-track{background:transparent}
.sidebar::-webkit-scrollbar-thumb{background:#d0d7de;border-radius:4px;border:2px solid #f6f8fa}
.sidebar::-webkit-scrollbar-thumb:hover{background:#abb0b6}
.module-pagination{display:flex;margin-top:40px;border:1px solid #d0d7de;border-radius:8px;overflow:hidden}
.module-pagination a{flex:1;display:flex;align-items:center;justify-content:center;padding:14px 20px;color:#0969da;background:#ffffff;font-size:14px;font-weight:500;cursor:pointer;line-height:1.4;transition:background .12s}
.module-pagination a:hover{background:#f6f8fa;text-decoration:none}
.module-pagination a:not(:last-child){border-right:1px solid #d0d7de}

@media(prefers-color-scheme:dark){
  :root:not([data-theme="light"]){body{color:#f0f6fc;background:#0d1117}
  a{color:#58a6ff}
  a:hover{text-decoration:underline}
  .topbar{background:#0d1117;border-bottom-color:#30363d}
  .topbar-title{color:#8b949e}
  .menu-btn{background:#21262d;border-color:#30363d;color:#f0f6fc}
  .menu-btn:hover{background:#30363d}
  .star-banner{background:#1a1a2e;border-bottom-color:#30363d;color:#f0f6fc}
  .star-banner-close{color:#8b949e}
  .star-banner-close:hover{color:#f0f6fc}
  .sidebar{background:#0d1117;border-right-color:#30363d}
  .sidebar-header{border-bottom-color:#30363d}
  .sidebar-header h1{color:#f0f6fc}
  .sidebar-header-link{color:#f0f6fc}
  .sidebar-header-link:hover{color:#58a6ff}
  .nav-part{color:#8b949e}
  .nav-module{color:#f0f6fc}
  .nav-module:hover{color:#58a6ff}
  .nav-module:hover .nav-module-chevron{color:#58a6ff}
  .nav-module-chevron{color:#8b949e}
  .nav-topic{color:#f0f6fc}
  .nav-topic:hover{background:#161b22}
  .nav-topic.active{background:#161b22;color:#58a6ff}
  .nav-topic-num{color:#8b949e}
  .nav-subtopic{color:#8b949e}
  .nav-subtopic:hover{color:#58a6ff}
  .search-box input{background:#0d1117;border-color:#30363d;color:#f0f6fc}
  .search-box input:focus{border-color:#58a6ff;box-shadow:0 0 0 3px rgba(88,166,255,.15)}
  .search-box input::placeholder{color:#8b949e}
  .sidebar::-webkit-scrollbar-thumb{background:#30363d;border-color:#0d1117}
  .sidebar::-webkit-scrollbar-thumb:hover{background:#3d444d}
  .sidebar-overlay{background:rgba(1,4,9,.7);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
  .markdown-body{color:#f0f6fc}
  .markdown-body h5,.markdown-body h6{color:#8b949e}
  .markdown-body blockquote{color:#8b949e;border-left-color:#30363d}
  .markdown-body hr{background:#30363d}
  .markdown-body code{color:#f0f6fc;text-shadow:none}
  .markdown-body pre{background:#161b22;border-color:#30363d}
  .markdown-body table thead{background:#161b22}
  .markdown-body th,.markdown-body td{border-color:#30363d}
  .markdown-body tr{background:#0d1117;border-top-color:#30363d}
  .markdown-body tr:nth-child(2n){background:#161b22}
  .heading-anchor{color:#58a6ff}
  .theme-toggle{background:#21262d;border-color:#30363d;color:#f0f6fc}
  .theme-toggle:hover{background:#30363d}
  .module-pagination{border-color:#30363d}
  .module-pagination a{color:#58a6ff;background:#0d1117}
  .module-pagination a:hover{background:#161b22}
  .module-pagination a:not(:last-child){border-right-color:#30363d}
  .scroll-to-top{background:#21262d;border-color:#30363d;color:#f0f6fc;box-shadow:0 1px 3px rgba(0,0,0,.4)}
  .scroll-to-top:hover{background:#30363d}}
}
:root[data-theme="dark"]{body{color:#f0f6fc;background:#0d1117}
  a{color:#58a6ff}
  a:hover{text-decoration:underline}
  .topbar{background:#0d1117;border-bottom-color:#30363d}
  .topbar-title{color:#8b949e}
  .menu-btn{background:#21262d;border-color:#30363d;color:#f0f6fc}
  .menu-btn:hover{background:#30363d}
  .star-banner{background:#1a1a2e;border-bottom-color:#30363d;color:#f0f6fc}
  .star-banner-close{color:#8b949e}
  .star-banner-close:hover{color:#f0f6fc}
  .sidebar{background:#0d1117;border-right-color:#30363d}
  .sidebar-header{border-bottom-color:#30363d}
  .sidebar-header h1{color:#f0f6fc}
  .sidebar-header-link{color:#f0f6fc}
  .sidebar-header-link:hover{color:#58a6ff}
  .nav-part{color:#8b949e}
  .nav-module{color:#f0f6fc}
  .nav-module:hover{color:#58a6ff}
  .nav-module:hover .nav-module-chevron{color:#58a6ff}
  .nav-module-chevron{color:#8b949e}
  .nav-topic{color:#f0f6fc}
  .nav-topic:hover{background:#161b22}
  .nav-topic.active{background:#161b22;color:#58a6ff}
  .nav-topic-num{color:#8b949e}
  .nav-subtopic{color:#8b949e}
  .nav-subtopic:hover{color:#58a6ff}
  .search-box input{background:#0d1117;border-color:#30363d;color:#f0f6fc}
  .search-box input:focus{border-color:#58a6ff;box-shadow:0 0 0 3px rgba(88,166,255,.15)}
  .search-box input::placeholder{color:#8b949e}
  .sidebar::-webkit-scrollbar-thumb{background:#30363d;border-color:#0d1117}
  .sidebar::-webkit-scrollbar-thumb:hover{background:#3d444d}
  .sidebar-overlay{background:rgba(1,4,9,.7);-webkit-backdrop-filter:blur(2px);backdrop-filter:blur(2px)}
  .markdown-body{color:#f0f6fc}
  .markdown-body h5,.markdown-body h6{color:#8b949e}
  .markdown-body blockquote{color:#8b949e;border-left-color:#30363d}
  .markdown-body hr{background:#30363d}
  .markdown-body code{color:#f0f6fc;text-shadow:none}
  .markdown-body pre{background:#161b22;border-color:#30363d}
  .markdown-body table thead{background:#161b22}
  .markdown-body th,.markdown-body td{border-color:#30363d}
  .markdown-body tr{background:#0d1117;border-top-color:#30363d}
  .markdown-body tr:nth-child(2n){background:#161b22}
  .heading-anchor{color:#58a6ff}
  .theme-toggle{background:#21262d;border-color:#30363d;color:#f0f6fc}
  .theme-toggle:hover{background:#30363d}
  .module-pagination{border-color:#30363d}
  .module-pagination a{color:#58a6ff;background:#0d1117}
  .module-pagination a:hover{background:#161b22}
  .module-pagination a:not(:last-child){border-right-color:#30363d}
  .scroll-to-top{background:#21262d;border-color:#30363d;color:#f0f6fc;box-shadow:0 1px 3px rgba(0,0,0,.4)}
  .scroll-to-top:hover{background:#30363d}}