@charset "UTF-8";
:root{color-scheme:light;--bg:#f8fafc;--panel:#fff;--ink:#1e293b;--secondary:#475569;--muted:#596b82;--line:#dce3ed;--primary:#234eaa;--soft:#eaf0ff;--font:"Segoe UI","Microsoft YaHei","PingFang SC","Noto Sans CJK SC",sans-serif}
*{box-sizing:border-box}body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.75 var(--font);-webkit-font-smoothing:antialiased}h1,h2,h3,p{margin:0}a{color:inherit;text-decoration:none}button,input,select{font:inherit;color:inherit}button,a,input,select,summary{touch-action:manipulation}button,select,summary{cursor:pointer}button{border:0;background:none}svg{width:20px;height:20px;flex-shrink:0}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,summary:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid var(--primary);outline-offset:4px}[hidden]{display:none!important}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip-path:inset(50%);white-space:nowrap;border:0}.skip-link{position:fixed;left:20px;top:10px;z-index:100;padding:10px 18px;background:var(--primary);color:white;transform:translateY(-200%)}.skip-link:focus{transform:none}.library-shell,.reader-shell,.library-footer{max-width:1240px;margin:0 auto;padding-left:32px;padding-right:32px}.breadcrumb{display:flex;gap:14px;align-items:center;flex-wrap:wrap;font-size:13px;color:var(--muted);padding:26px 0}.breadcrumb a:hover{color:var(--primary)}.library-intro{display:grid;grid-template-columns:1.15fr 1fr;gap:72px;padding:34px 0 54px;align-items:start}.module-name{color:var(--primary);font-weight:600;font-size:15px;margin-bottom:12px}.library-intro h1{font-size:clamp(32px,3.7vw,46px);line-height:1.45;letter-spacing:-1.2px;font-weight:700}.library-lead{font-size:16px;color:var(--secondary);margin-top:20px;line-height:1.95}.reading-guide{border-left:3px solid var(--primary);padding:4px 0 2px 26px;margin-top:8px}.reading-guide h2{font-size:14px;font-weight:600;color:var(--muted);margin-bottom:6px}.guide-link{display:flex;gap:14px;padding:13px 0;align-items:flex-start}.guide-number{font-size:12px;line-height:24px;color:var(--primary);min-width:20px}.guide-link strong{display:block;font-size:15px;font-weight:600}.guide-link>span>span{display:block;font-size:12px;color:var(--muted);margin-top:3px}.guide-link:hover strong{color:var(--primary)}.collection{border-top:1px solid var(--line);padding-top:32px}.collection-head{display:flex;align-items:center;justify-content:space-between;gap:28px;margin-bottom:24px}.collection-head h2{font-size:24px;font-weight:650}.collection-head p{font-size:13px;color:var(--muted);margin-top:4px}.article-search{display:flex;align-items:center;gap:10px;width:330px;max-width:100%;background:var(--panel);border:1px solid #8493a8;padding:10px 13px;border-radius:6px}.article-search svg{fill:none;stroke:var(--muted);stroke-width:1.5}.article-search input{width:100%;min-width:0;border:0;background:none;outline:none;font-size:14px;line-height:24px}.article-search:focus-within{outline:3px solid var(--primary);outline-offset:3px}.article-search input:focus-visible{outline:none}.filter-bar{display:flex;align-items:center;justify-content:space-between;gap:20px;padding-bottom:18px;border-bottom:1px solid var(--line)}.category-filters{display:flex;gap:8px;flex-wrap:wrap}.category-filters button{min-height:42px;display:inline-flex;align-items:center;gap:8px;padding:8px 12px;font-size:13px;border-radius:5px;color:var(--secondary);white-space:nowrap}.category-filters button:hover{background:#edf1f7}.category-filters button.active{color:var(--primary);background:var(--soft);font-weight:600}.category-filters button span{font-size:11px;font-variant-numeric:tabular-nums;opacity:.8}.sort-label{display:flex;align-items:center;gap:8px;font-size:12px;color:var(--muted);white-space:nowrap}.sort-label select{border:1px solid var(--line);border-radius:5px;min-height:38px;background:var(--panel);padding:5px 8px;font-size:12px}.article-list{padding:0;margin:0;list-style:none}.article-row{padding:29px 0 27px;border-bottom:1px solid var(--line)}.article-meta{display:flex;flex-wrap:wrap;gap:8px 18px;font-size:12px;line-height:1.7;color:var(--muted)}.article-meta>span:first-child{color:var(--primary)}.article-row h2{font-size:21px;line-height:1.55;font-weight:650;margin:9px 0 8px;max-width:850px}.article-row h2 a:hover{color:var(--primary);text-decoration:underline;text-underline-offset:5px}.article-summary{font-size:14px;color:var(--secondary);max-width:850px;line-height:1.9}.article-tags{display:flex;flex-wrap:wrap;gap:10px;margin-top:13px}.article-tags a{font-size:11px;color:var(--muted);padding:2px 8px;border:1px solid var(--line);border-radius:4px;line-height:1.8}.article-tags a:hover{color:var(--primary);border-color:var(--primary)}.empty-state{padding:56px 20px;text-align:center;color:var(--secondary)}.empty-state h3{font-size:20px}.empty-state p{font-size:14px;margin:10px 0 20px}.button{background:var(--primary);color:white;border-radius:5px;padding:10px 18px;min-height:44px;font-size:14px}.collection-note{font-size:13px;color:var(--muted);padding:20px 0}.library-footer{padding-top:48px;padding-bottom:28px;margin-top:40px}.footer-copy{display:flex;align-items:center;gap:24px;justify-content:space-between;border-top:1px solid var(--line);padding-top:24px;font-size:12px;color:var(--muted)}.footer-copy>a:first-child{font-size:16px;font-weight:650;color:var(--ink)}.site-filing{justify-content:center;margin-top:24px}.article-header{max-width:900px;padding:25px 0 33px}.article-header h1{font-size:clamp(28px,3vw,38px);line-height:1.5;letter-spacing:-.6px;margin-top:15px;font-weight:700;overflow-wrap:anywhere}.reader-summary{font-size:17px;line-height:1.9;color:var(--secondary);margin-top:18px;max-width:770px}.editorial-note{font-size:12px;line-height:1.9;color:var(--muted);margin-top:18px}.source-line{font-size:14px;margin-top:16px}.source-line a{color:var(--primary);text-decoration:underline}.reader-grid{display:grid;grid-template-columns:minmax(0,760px) minmax(180px,1fr);gap:64px;align-items:start;border-top:1px solid var(--line);padding-top:34px}.article-body{font-size:17px;line-height:1.95;overflow-wrap:anywhere;min-width:0}.article-body>p{margin:0 0 1.2em}.article-body h2{font-size:24px;font-weight:650;line-height:1.55;margin:1.8em 0 .8em;scroll-margin-top:28px}.article-body h3{font-size:20px;line-height:1.65;margin:1.5em 0 .7em;scroll-margin-top:28px}.article-body ul,.article-body ol{margin:0 0 1.3em;padding-left:1.5em}.article-body li{padding-left:.2em;margin:.4em 0}.article-body a{color:var(--primary);text-decoration:underline;text-underline-offset:3px}.article-body blockquote{margin:1.2em 0;padding:12px 20px;border-left:3px solid var(--primary);background:#f0f4fa;color:var(--secondary)}.article-body blockquote p{margin:0}.article-body img{max-width:100%;height:auto}.article-body code{font-family:"Cascadia Code",Consolas,monospace;font-size:.85em;background:#eef2f7;padding:2px 5px;border-radius:3px}.article-body pre{position:relative;margin:1.2em 0;padding:48px 20px 20px;background:#edf2f8;border:1px solid var(--line);border-radius:6px;overflow-x:auto;line-height:1.75}.article-body pre code{padding:0;background:none;font-size:13px;white-space:pre}.copy-code{position:absolute;right:12px;top:9px;min-height:30px;padding:3px 8px;font-size:12px;color:var(--primary);border:1px solid #b7c6df;border-radius:4px;background:var(--panel)}.table-scroll{overflow-x:auto;margin:1.3em 0}.article-body table{border-collapse:collapse;width:100%;min-width:430px;font-size:15px;line-height:1.8}.article-body th,.article-body td{padding:12px 15px;text-align:left;border:1px solid var(--line);vertical-align:top}.article-body th{background:#edf2f8;font-weight:600}.article-aside{position:sticky;top:28px;padding-left:24px;border-left:1px solid var(--line)}.article-toc summary{font-size:13px;font-weight:650;color:var(--secondary);min-height:36px}.article-toc nav{display:flex;flex-direction:column;gap:4px}.article-toc a{font-size:12px;color:var(--muted);padding:6px 0;line-height:1.65}.article-toc .toc-level-3{padding-left:12px}.article-toc a:hover,.article-toc a.current{color:var(--primary)}.aside-note{font-size:12px;color:var(--muted);margin-top:25px;line-height:1.9}.references,.related{border-top:1px solid var(--line);margin-top:36px;padding-top:8px}.references h2,.related h2{font-size:20px;margin-top:20px}.references ul{font-size:14px}.related ul{list-style:none;padding:0}.related li{padding:8px 0 12px;margin:0}.related a{font-size:16px;font-weight:600}.related p{font-size:13px;color:var(--secondary);line-height:1.85;margin-top:6px}.reading-end{padding-top:16px;font-size:14px}
@media(max-width:1000px){.library-intro{gap:35px}.reader-grid{gap:30px;grid-template-columns:minmax(0,1fr) 205px}.filter-bar{align-items:flex-start;flex-direction:column}.sort-label{align-self:flex-end;margin-top:-4px}}
@media(max-width:800px){.library-shell,.reader-shell,.library-footer{padding-left:24px;padding-right:24px}.library-intro{grid-template-columns:1fr;padding-top:14px;padding-bottom:36px;gap:32px}.reading-guide{margin-top:0;padding-left:20px}.library-intro h1 br{display:none}.library-intro h1{font-size:34px}.library-lead br{display:none}.reader-grid{display:flex;flex-direction:column;padding-top:0;gap:26px}.article-aside{position:static;order:-1;width:100%;padding:14px 0 0;border-left:0}.article-toc{background:#eef3fa;padding:10px 16px;border-radius:5px}.article-toc summary{display:list-item;min-height:30px;line-height:30px}.article-toc a{padding:8px 0}.aside-note{display:none}.article-body{width:100%}.article-header{padding-top:14px}.reader-summary{font-size:16px}}
@media(max-width:540px){.library-shell,.reader-shell,.library-footer{padding-left:20px;padding-right:20px}.breadcrumb{padding:20px 0;font-size:12px}.library-intro h1{font-size:30px;letter-spacing:-.6px}.library-lead{font-size:14px;margin-top:15px}.reading-guide{padding-left:16px}.guide-link{padding:12px 0}.guide-link strong{font-size:14px}.guide-link>span>span{font-size:12px}.collection{padding-top:24px}.collection-head{align-items:stretch;flex-direction:column;gap:18px;margin-bottom:16px}.article-search{width:100%}.category-filters{width:100%;overflow-x:auto;flex-wrap:nowrap;gap:4px;padding:4px 1px 8px}.category-filters button{font-size:12px;padding:8px 10px}.filter-bar{gap:8px;padding-bottom:14px}.sort-label{margin-top:0}.article-row{padding:24px 0}.article-row h2{font-size:19px}.article-meta{font-size:11px;gap:6px 12px}.article-summary{font-size:13px}.article-tags a{min-height:30px;display:inline-flex;align-items:center}.footer-copy{flex-wrap:wrap;gap:12px;font-size:11px}.footer-copy p{order:3;width:100%}.article-body{font-size:16px;line-height:1.95}.article-body h2{font-size:22px}.article-header h1{font-size:27px}.reader-summary{font-size:15px}.editorial-note{font-size:11px}.article-body th,.article-body td{padding:10px 12px}.article-body pre{padding-left:14px;padding-right:14px}.library-footer{margin-top:24px;padding-top:26px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation:none!important;transition:none!important}}