:root{color-scheme:light;--ink:#1d1d1f;--muted:#6e6e73;--blue:#0066cc;--line:#e5e5ea;--surface:#f5f5f7;--font:-apple-system,BlinkMacSystemFont,"SF Pro Display","SF Pro Text","PingFang SC","Hiragino Sans GB","Microsoft YaHei",sans-serif}
*{box-sizing:border-box}html{scroll-behavior:smooth;scroll-padding-top:100px}body{margin:0;background:var(--surface);color:var(--ink);font:16px/1.65 var(--font);-webkit-font-smoothing:antialiased}a{color:inherit;text-decoration:none}button,input{font:inherit;color:inherit}button{cursor:pointer;border:0;background:none}button,a{-webkit-tap-highlight-color:transparent}button:focus-visible,a:focus-visible,input:focus-visible,summary:focus-visible{outline:3px solid #0071e3;outline-offset:4px}svg{width:22px;height:22px;stroke:currentColor;stroke-width:1.6;stroke-linecap:round;stroke-linejoin:round;flex-shrink:0}h1,h2,h3,p{margin:0}h1{font-size:38px;line-height:1.35;font-weight:650;letter-spacing:-1px}h1:focus,main:focus{outline:none}.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}.skip-link{position:fixed;left:20px;top:-70px;background:var(--ink);color:white;padding:10px 20px;z-index:50;border-radius:8px}.skip-link:focus{top:15px}
.sidebar{position:fixed;inset:0 auto 0 0;width:240px;border-right:1px solid var(--line);padding:33px 20px 24px;background:#fafafa;display:flex;flex-direction:column;z-index:10;overflow:auto}.brand{display:flex;flex-direction:column;padding:0 16px;margin-bottom:32px;align-items:flex-start}.brand-name{font-size:31px;font-weight:650;letter-spacing:-2px;line-height:1.3}.brand-dot{color:var(--blue);margin-left:2px}.brand-caption{color:var(--muted);font-size:13px;margin-top:8px;letter-spacing:1px}.home-link,.side-guide{display:flex;gap:11px;align-items:center;padding:11px 14px;border-radius:8px;font-size:14px;font-weight:500}.home-link svg{width:18px;height:18px}.home-link[aria-current],.side-guide[aria-current]{background:#e9e9ed}.side-guide{color:var(--muted);padding-left:43px}.side-guide span{margin-left:auto}.home-link:hover,.side-guide:hover{background:#eeeef1}.nav-label{font-size:12px;color:var(--muted);margin:24px 14px 10px;letter-spacing:1px}.topic-nav{display:grid;gap:3px}.topic-nav a{display:flex;align-items:center;gap:12px;font-size:14px;padding:10px 12px;border-radius:8px;color:#505056;transition:background .15s,color .15s}.topic-nav a:hover{background:#eeeef1}.topic-nav a[aria-current]{background:#eaf2fd;color:var(--blue)}.nav-number{font-size:12px;font-variant-numeric:tabular-nums;color:#76767b}.sidebar-bottom{display:flex;align-items:center;gap:11px;margin:auto 8px 0;padding-top:30px}.curator-mark{display:grid;place-items:center;width:34px;height:34px;border-radius:50%;background:#eaeaed;font-size:14px}.sidebar-bottom strong{display:block;font-size:13px;font-weight:500}.sidebar-bottom div>span{display:block;font-size:12px;color:var(--muted);margin-top:2px}
.page{margin-left:240px}.topbar{min-height:66px;display:flex;align-items:center;gap:20px;justify-content:space-between;padding:12px 44px;border-bottom:1px solid var(--line);background:rgba(250,250,252,.95);backdrop-filter:blur(18px);position:sticky;top:0;z-index:5}.breadcrumb{font-size:14px;color:#505056;display:flex;align-items:center;gap:13px;min-width:0;flex-wrap:wrap}.breadcrumb a{color:var(--muted)}.breadcrumb a:hover{color:var(--blue)}.crumb-slash{color:#a5a5ab}.header-search{display:flex;align-items:center;gap:9px;color:var(--muted);font-size:14px;white-space:nowrap;margin-left:auto}.header-search:hover{color:var(--blue)}.header-search svg{width:18px;height:18px}.mobile-brand,.menu-button{display:none}main{max-width:1260px;margin:auto;padding:38px 44px 48px;min-height:calc(100dvh - 136px)}.intro{margin-bottom:24px}.eyebrow{font-size:12px;font-weight:550;letter-spacing:1.8px;color:var(--muted);margin-bottom:11px}.title-line{display:flex;align-items:center;justify-content:space-between;gap:20px}.intro>p{color:var(--muted);font-size:16px;margin-top:10px;line-height:1.8}.preview-label{display:inline-block;font-size:12px;padding:4px 10px;border:1px solid #d8d8de;border-radius:6px;color:var(--muted);white-space:nowrap}
.search-form{display:flex;align-items:center;gap:14px;background:#fff;border:1px solid #dcdce2;border-radius:14px;padding:8px 10px 8px 18px;transition:box-shadow .15s,border-color .15s;box-shadow:0 2px 5px #17172a03}.search-form:focus-within{border-color:#8bb6e4;box-shadow:0 0 0 3px #0071e30b}.search-form>svg{color:#77777d;width:20px;height:20px}.search-form input{border:0;background:transparent;width:100%;min-width:0;outline:none;padding:10px 0;font-size:16px;line-height:1.5}.search-form input:focus-visible{outline:0}.search-form input::placeholder{color:#828288}.search-form button{font-size:14px;white-space:nowrap;background:#f5f5f7;border-radius:8px;padding:9px 17px;color:#525258}.search-form button:hover{background:#eaf2fd;color:var(--blue)}.quick-search{display:flex;gap:9px;flex-wrap:wrap;align-items:center;margin-top:12px;font-size:13px}.quick-search>span{color:var(--muted);margin-right:3px}.quick-search a{font-size:14px;color:#58585f;background:#ededf0;border:1px solid transparent;border-radius:6px;padding:3px 10px}.quick-search a:hover{color:var(--blue);background:#e7eef9;border-color:#d0dff0}.starting-points{margin-top:29px}.section-kicker{font-size:14px;font-weight:600;margin-bottom:12px}.path-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}.path-card{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:16px;border-radius:11px;border:1px solid var(--line);background:#fdfdfd;transition:border-color .15s,background .15s}.path-card:hover{background:white;border-color:#a6c7ed}.path-card>span{font-size:14px;font-weight:500}.path-card svg{color:var(--muted);width:17px;height:17px}.start-reading{display:flex;align-items:center;gap:17px;padding:23px 25px;background:#fff;border:1px solid var(--line);border-radius:15px;margin-top:22px;transition:border-color .15s}.start-reading:hover{border-color:#a6c7ed}.reading-icon{background:#f1f4fa;color:#44749f;border-radius:11px;width:45px;height:48px;display:grid;place-items:center;flex-shrink:0}.small-label{font-size:12px;color:var(--muted);display:block;margin-bottom:3px}.start-reading h2{font-size:18px;line-height:1.5;font-weight:600}.start-reading p{font-size:14px;color:var(--muted);margin-top:5px}.start-reading-action{display:flex;align-items:center;gap:8px;margin-left:auto;color:var(--blue);font-size:14px;white-space:nowrap}.start-reading-action svg{width:18px;height:18px}.topics{margin-top:34px}.section-heading{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:20px}.section-heading h2{font-size:23px;font-weight:620;letter-spacing:-.5px}.section-heading p{font-size:14px;color:var(--muted);margin-top:6px}.topic-total{font-size:13px;color:var(--muted);white-space:nowrap;padding-bottom:3px}.topic-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.topic-card{padding:24px 26px 20px;border:1px solid #e3e3e9;border-radius:17px;background:white;display:flex;flex-direction:column;transition:border-color .2s,box-shadow .2s,transform .2s}.topic-card:hover{border-color:#bccddd;box-shadow:0 6px 20px #202a3e06;transform:translateY(-2px)}.topic-card.featured{background:linear-gradient(120deg,#edf3fb,#f9fbfe);border-color:#dfe7f2}.card-top{display:flex;justify-content:space-between;align-items:center;margin-bottom:17px}.card-number{font-size:13px;font-weight:600;letter-spacing:1px;color:#777d88;font-variant-numeric:tabular-nums}.featured .card-number{color:#47749b}.card-label{font-size:12px;color:var(--muted)}.topic-card h3{font-size:20px;line-height:1.5;letter-spacing:-.4px;font-weight:600}.topic-card p{font-size:14px;line-height:1.85;color:var(--muted);margin-top:9px}.card-entries{list-style:none;padding:15px 0 0;margin:15px 0 0;border-top:1px solid #e8eaf0}.card-entries li{font-size:14px;line-height:1.7;padding-left:12px;position:relative;color:#505057}.card-entries li+li{margin-top:7px}.card-entries li:before{content:'·';position:absolute;left:0;color:#9d9da3}.card-bottom{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:auto;padding-top:22px;font-size:12px;color:var(--muted)}.card-action{display:flex;align-items:center;gap:6px;color:var(--blue);font-size:14px;white-space:nowrap}.card-action svg{width:16px;height:16px}.page-note{font-size:13px;line-height:1.9;color:var(--muted);margin-top:28px}.page>footer{max-width:1172px;display:flex;justify-content:space-between;border-top:1px solid var(--line);padding:20px 0 25px;margin:0 44px;gap:20px;color:var(--muted);font-size:12px}
.detail-heading{max-width:850px;margin:5px 0 32px}.detail-heading h1{font-size:34px;line-height:1.5;letter-spacing:-.8px}.detail-heading>p{color:var(--muted);font-size:17px;line-height:1.9;margin-top:16px;max-width:760px}.detail-meta{display:flex;align-items:center;gap:20px;margin-top:21px;font-size:14px;color:var(--muted);flex-wrap:wrap}.detail-meta .preview-label{padding:3px 9px}.topic-reading{margin:0 0 34px}.directory-section{margin-top:30px}.entry-list{list-style:none;padding:0;margin:0;border:1px solid var(--line);border-radius:15px;background:white;overflow:hidden}.entry-row{display:flex;align-items:flex-start;gap:18px;padding:23px 24px;scroll-margin-top:95px}.entry-row+.entry-row{border-top:1px solid #ededf0}.item-index{font-size:13px;color:#8a8a91;font-variant-numeric:tabular-nums;padding-top:3px;flex-shrink:0}.entry-row>div{min-width:0}.entry-row h3{font-size:16px;font-weight:450;line-height:1.75}.entry-status{font-size:12px;color:#77777e;background:#f3f3f5;border-radius:5px;padding:3px 7px;margin-left:auto;flex-shrink:0;margin-top:1px}.selected-entry{background:#edf4fe}.selected-entry h3{color:#005ebc}.related-section{margin-top:36px}.related-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}.related-card{padding:21px 23px;border:1px solid var(--line);border-radius:13px;position:relative;background:#fbfbfc}.related-card:hover{border-color:#a6c7ed}.related-card>span{font-size:12px;color:var(--muted)}.related-card h3{font-size:16px;font-weight:500;margin-top:6px;padding-right:28px}.related-card>svg{position:absolute;right:20px;bottom:22px;width:18px;height:18px;color:var(--blue)}.back-link{display:inline-block;font-size:14px;color:var(--blue);margin-top:28px}.back-link:hover{text-decoration:underline;text-underline-offset:4px}.path-intro{display:flex;gap:16px;align-items:flex-start;border-left:2px solid #a2b8ce;padding:0 0 0 17px;margin:0 0 28px;color:var(--muted);font-size:14px}.path-step{color:#476787;font-weight:500;white-space:nowrap}
.reading-main{max-width:1360px;padding-top:38px}.reading-layout{display:grid;grid-template-columns:minmax(0,740px) 176px;gap:48px;justify-content:center}.article{min-width:0}.article-heading{padding-bottom:30px;border-bottom:1px solid var(--line)}.article-heading .back-link{margin:0 0 31px}.article-meta{display:flex;gap:18px;font-size:13px;color:var(--muted);margin-bottom:14px}.article-meta>span:first-child{color:var(--blue)}.article h1{font-size:36px;line-height:1.5;letter-spacing:-1px}.article-lead{font-size:18px;color:var(--muted);line-height:1.9;margin-top:17px}.article-content{font-size:17px;line-height:1.95;color:#38383e}.article-content>section{padding-top:38px;scroll-margin-top:86px}.article-content h2{font-size:23px;line-height:1.6;color:var(--ink);font-weight:600;margin-bottom:16px;letter-spacing:-.3px}.article-content p+p{margin-top:16px}.inline-resource{display:flex;align-items:center;gap:16px;padding:18px 19px;border:1px solid var(--line);border-radius:12px;margin-top:25px;background:#fff;line-height:1.65}.inline-resource>svg:first-child{color:#7c8b9d}.inline-resource span{min-width:0}.inline-resource small{display:block;font-size:12px;color:var(--muted);margin-bottom:3px}.inline-resource strong{font-weight:500;font-size:16px;color:var(--ink)}.inline-resource>svg:last-child{margin-left:auto;width:18px;height:18px;color:var(--blue)}.inline-resource:hover{border-color:#a6c7ed}.article-paths{margin-top:23px;border-top:1px solid var(--line)}.article-paths a{display:block;border-bottom:1px solid var(--line);padding:20px 0}.article-paths a:hover h3{color:var(--blue)}.article-paths h3{font-size:17px;font-weight:600;line-height:1.6;color:var(--ink)}.article-paths h3 span{float:right;font-weight:400;color:#8391a1}.article-paths p{font-size:16px;color:var(--muted);margin-top:7px;line-height:1.85}.article-callout{border-left:3px solid #8daece;background:#edf2f8;margin:23px 0;padding:17px 21px;border-radius:0 10px 10px 0;color:#365776;font-size:16px}.article-toc{position:sticky;top:105px;align-self:start;margin-top:45px}.article-toc>p{font-size:13px;font-weight:600;margin-bottom:15px}.article-toc nav{border-left:1px solid #dddde3;display:grid;gap:3px}.toc-link{display:block;font-size:13px;color:var(--muted);padding:8px 0 8px 15px;margin-left:-1px;border-left:2px solid transparent;line-height:1.7}.toc-link.is-active{color:var(--blue);border-color:var(--blue)}.toc-link:hover{color:var(--blue)}.toc-home{display:block;font-size:13px;color:var(--muted);margin-top:28px}.toc-home:hover{color:var(--blue)}.article-next{display:flex;justify-content:space-between;gap:24px;align-items:flex-end;border-top:1px solid var(--line);padding-top:25px;margin-top:43px}.article-next>a:first-child>span{font-size:12px;color:var(--muted)}.article-next strong{display:flex;align-items:center;gap:15px;font-size:16px;font-weight:500;margin-top:5px;color:var(--blue)}.article-next strong svg{width:18px;height:18px}.article-next .back-link{margin:0;white-space:nowrap}.mobile-toc{display:none}
.search-heading{margin-bottom:25px}.compact-search{margin-bottom:28px}.result-count{font-size:14px;color:var(--muted);padding-bottom:15px;border-bottom:1px solid var(--line)}.result-list{background:#fff;border:1px solid var(--line);border-radius:15px;margin-top:18px;overflow:hidden}.result-row{display:flex;gap:16px;align-items:flex-start;padding:23px}.result-row+.result-row{border-top:1px solid var(--line)}.result-row:hover{background:#f8fafd}.result-icon{color:#87919e;background:#f4f5f7;border-radius:8px;width:36px;height:39px;display:grid;place-items:center;flex-shrink:0;margin-top:5px}.result-icon svg{width:19px;height:19px}.result-meta{font-size:12px;color:var(--muted);margin-bottom:5px}.result-copy{min-width:0}.result-copy h2{font-size:17px;line-height:1.7;font-weight:550;overflow-wrap:anywhere}.result-copy p{font-size:14px;color:var(--muted);margin-top:7px}.result-row>svg{margin-left:auto;margin-top:22px;width:18px;height:18px;color:var(--blue)}mark{color:inherit;background:#e6effb;border-radius:3px;padding:0 1px}.search-empty{padding:50px 15px;text-align:center}.search-empty>svg{width:32px;height:32px;color:#8b98a6;margin-bottom:22px}.search-empty h2{font-size:21px;font-weight:550;overflow-wrap:anywhere}.search-empty p{font-size:15px;color:var(--muted);margin-top:12px}.search-empty .quick-search{justify-content:center;margin-top:25px}.search-empty .quick-search>span{display:none}
.icon-button{display:grid;place-items:center;width:36px;height:36px;border-radius:7px;flex-shrink:0}.icon-button:hover{background:#ededf1}.menu-button{display:none}#mobile-menu{padding:0;color:var(--ink);background:#fafafa;width:min(380px,calc(100vw - 24px));max-height:calc(100dvh - 32px);border:1px solid var(--line);border-radius:16px;box-shadow:0 22px 100px #11182733;overscroll-behavior:contain}#mobile-menu::backdrop{background:#161c294f;backdrop-filter:blur(5px)}.menu-heading{display:flex;justify-content:space-between;align-items:center;padding:17px 20px;background:#fafafa;position:sticky;top:0;border-bottom:1px solid var(--line)}.menu-heading h2{font-size:17px;font-weight:600}#mobile-nav{padding:14px 16px 22px}#mobile-nav>a{display:flex;align-items:center;gap:13px;font-size:15px;padding:12px 13px;border-radius:8px}#mobile-nav>a:hover{background:#eeeef1}#mobile-nav>a[aria-current]{color:var(--blue);background:#eaf2fd}body.menu-open{overflow:hidden}.noscript-note{padding:30px;text-align:center}
@media(min-width:1600px){main{padding-top:48px}.page>footer{margin-left:auto;margin-right:auto}.reading-main{padding-left:56px;padding-right:56px}.reading-layout{gap:65px}}
@media(max-width:1200px){.sidebar{width:222px;padding-left:14px;padding-right:14px}.page{margin-left:222px}.topbar{padding-left:30px;padding-right:30px}main{padding:34px 30px 42px}.page>footer{margin:0 30px}.path-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.reading-layout{gap:28px;grid-template-columns:minmax(0,1fr) 150px}.article h1{font-size:32px}.topic-card{padding:22px}.topic-card h3{font-size:19px}.article-next{flex-wrap:wrap}.article-toc{margin-top:40px}.toc-link{font-size:13px}}
@media(max-width:1000px){.sidebar{display:none}.page{margin-left:0}.mobile-brand{display:block;font-size:23px;font-weight:650;letter-spacing:-1px}.menu-button{display:grid}.topbar{gap:13px;padding:10px 24px;min-height:62px}.breadcrumb{margin-left:9px;font-size:13px}.breadcrumb>a:first-child,.breadcrumb>.crumb-slash:first-of-type{display:none}.reading-layout{gap:38px;grid-template-columns:minmax(0,1fr) 160px}.reading-main{padding-top:32px}.article h1{font-size:34px}}
@media(max-width:700px){main{padding:28px 22px 36px}.topbar{padding:10px 18px}.page>footer{margin:0 22px}.breadcrumb{display:none}.header-search{font-size:14px}.title-line{align-items:flex-start;flex-wrap:wrap;gap:13px}h1{font-size:31px;letter-spacing:-.8px}.title-line .preview-label{margin-top:6px}.intro>p{font-size:15px}.eyebrow{font-size:12px;letter-spacing:1.4px}.topic-grid{grid-template-columns:1fr;gap:15px}.topic-card{padding:23px}.topic-card h3{font-size:20px}.topic-card p{font-size:15px}.card-entries li{font-size:15px}.reading-layout{display:block}.article-toc{display:none}.mobile-toc{display:block;margin:22px 0 0;padding:14px 17px;background:#fff;border:1px solid var(--line);border-radius:10px}.mobile-toc summary{font-size:14px;cursor:pointer;color:#53535a}.mobile-toc nav{padding-top:12px}.mobile-toc .toc-link{font-size:14px;margin-left:0;border:0;padding:8px 0}.article h1{font-size:30px;line-height:1.5}.article-heading{padding-bottom:25px}.article-heading .back-link{margin-bottom:25px}.article-lead{font-size:17px}.article-content h2{font-size:22px}.article-content{font-size:17px}.article-content>section{padding-top:30px}.article-toc .toc-link{font-size:14px}.start-reading{padding:19px;gap:13px}.start-reading-action{font-size:0;gap:0}.start-reading-action svg{width:20px;height:20px}.start-reading h2{font-size:17px}.start-reading p{font-size:13px}.reading-icon{width:39px;height:43px}.topics{margin-top:31px}.section-heading h2{font-size:22px}.section-heading p{max-width:260px;line-height:1.8}.detail-heading h1{font-size:29px}.detail-heading>p{font-size:16px}.entry-row{padding:20px 18px;gap:13px;flex-wrap:wrap}.entry-row>div{width:calc(100% - 38px)}.entry-status{margin-left:32px;margin-top:-4px}.related-grid{grid-template-columns:1fr;gap:12px}.related-card h3{font-size:17px}.search-form{padding-left:13px;gap:10px;border-radius:12px}.search-form input{font-size:16px}.search-form input::placeholder{font-size:14px}.search-form button{padding:9px 12px}.quick-search{gap:7px}.quick-search>span{font-size:12px}.quick-search a{font-size:13px;padding:3px 9px}.search-empty{padding:35px 0}.search-empty h2{font-size:19px}.result-row{padding:20px 16px;gap:12px}.result-icon{display:none}.result-copy h2{font-size:16px}.result-row>svg{width:16px;height:16px}.path-intro{display:block}.path-intro p{margin-top:7px}.article-next strong{font-size:15px}.article-next{gap:19px}.inline-resource{padding:17px 15px;gap:12px}.inline-resource strong{font-size:15px}}
@media(max-width:380px){main{padding-left:17px;padding-right:17px}.path-card{padding:14px 11px}.path-card>span{font-size:13px}.quick-search>span{display:none}.start-reading{padding:17px 14px}.start-reading .reading-icon{display:none}.title-line{gap:10px}.title-line .preview-label{margin-top:0}.section-heading{gap:8px}}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{transition:none!important}}
/* Grouped navigation and direct reading, following the existing visual system. */
.sidebar{width:276px;overflow:hidden;padding:29px 18px 20px}.page{margin-left:276px}.brand{margin-bottom:26px}.topic-nav{display:block;min-height:0;overflow:auto;flex:1;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#d7d7de transparent;padding-right:4px}.nav-group{margin-bottom:4px}.nav-group summary{display:flex;align-items:center;gap:11px;padding:11px 12px;list-style:none;font-size:14px;font-weight:500;cursor:pointer;border-radius:8px;color:#505056;line-height:1.7}.nav-group summary::-webkit-details-marker{display:none}.nav-group summary:hover{background:#eeeef1}.nav-group.is-current>summary{color:var(--blue)}.nav-group[open]>summary{background:#eeeef1}.nav-group.is-current[open]>summary{background:#eaf2fd}.nav-chevron{margin-left:auto;font-size:20px;line-height:1;color:#8e8e95;transition:transform .15s}.nav-group[open] .nav-chevron{transform:rotate(90deg)}.nav-children{margin:6px 0 13px 21px;border-left:1px solid #dddde4;padding:0 0 0 10px}.topic-nav .nav-children a,#mobile-nav .nav-children a{display:flex;align-items:flex-start;flex-direction:column;gap:3px;padding:8px 10px;margin:2px 0;font-size:14px;font-weight:400;line-height:1.65;border-radius:6px;color:#65656c}.topic-nav .nav-children a[aria-current],#mobile-nav .nav-children a[aria-current]{color:var(--blue);background:#eaf2fd}.nav-entry small{font-size:12px;line-height:1.5;color:#8a8a92}.topic-nav .nav-children .nav-overview,#mobile-nav .nav-children .nav-overview{color:#47749b;font-size:13px;padding-top:7px;padding-bottom:7px}.nav-entry:hover{background:#eeeef1}.sidebar-bottom{padding-top:17px;margin-top:14px;border-top:1px solid var(--line);flex-shrink:0}.sidebar>.nav-label{margin-top:22px}.home-directory{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));column-gap:40px;row-gap:30px}.directory-group{border-top:1px solid #dcdce3;padding-top:20px;min-width:0}.directory-group-heading{display:flex;align-items:baseline;gap:11px}.directory-group h3{font-size:18px;line-height:1.6;font-weight:600;letter-spacing:-.3px}.directory-group h3 a:hover{color:var(--blue)}.directory-group .card-number{font-size:12px;color:#838994;flex-shrink:0}.directory-group ul{list-style:none;padding:0;margin:13px 0 0}.directory-group li+li{margin-top:3px}.directory-group li a{display:block;font-size:14px;line-height:1.75;padding:5px 0;color:#57575e}.directory-group li a:hover{color:var(--blue);text-decoration:underline;text-underline-offset:4px}.directory-all{font-size:13px;display:inline-flex;align-items:center;gap:9px;color:var(--blue);margin-top:10px;padding:5px 0}.directory-all svg{width:15px;height:15px}.reading-intro-link{display:flex;align-items:center;gap:10px;padding:15px 0;font-size:14px;color:var(--muted);margin-top:13px}.reading-intro-link:hover{color:var(--blue)}.reading-intro-link>svg{width:18px;height:18px}.reading-intro-link>svg:last-child{width:16px;height:16px}.topics{margin-top:19px}.entry-row{padding:0;display:block}.entry-row-link{display:flex;align-items:flex-start;gap:17px;padding:21px 24px;min-width:0}.entry-row-link:hover{background:#f5f8fd}.entry-row-link>div{min-width:0}.entry-row-link>svg{width:17px;height:17px;color:#8194a8;margin-top:5px}.entry-row-link .entry-status{margin-left:auto}.entry-row-link:hover h3{color:var(--blue)}.reading-pager{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:14px;margin-top:39px;padding-top:27px;border-top:1px solid var(--line)}.pager-link{border:1px solid var(--line);border-radius:11px;padding:16px 18px;background:#fff;min-width:0}.pager-link:hover{border-color:#a6c7ed}.pager-link.next:only-child{grid-column:2}.pager-label{display:flex;justify-content:space-between;gap:12px;color:var(--muted);font-size:13px;flex-wrap:wrap}.pager-label small{font-size:12px;color:#8a8a92}.pager-link strong{font-size:15px;font-weight:500;line-height:1.75;display:block;margin-top:9px;color:var(--blue)}.pending-article{padding:34px 0 8px;max-width:630px}.pending-icon{display:grid;place-items:center;border-radius:11px;background:#eaeef4;color:#8796a8;width:43px;height:46px;margin-bottom:17px}.pending-icon svg{width:22px;height:22px}.pending-article h2{font-size:21px;font-weight:550;margin-bottom:10px}.pending-article>p{font-size:16px;line-height:1.9;color:var(--muted)}.pending-article .back-link{margin-top:17px}.article-bottom-links{display:flex;gap:22px;flex-wrap:wrap;font-size:13px;color:var(--muted);margin-top:24px}.article-bottom-links a:hover{color:var(--blue)}.context-topic{font-size:14px;color:var(--blue);line-height:1.8;display:block}.article-toc .context-label{margin-top:28px;color:var(--muted);font-size:12px}.article-toc .context-links{border:0;display:grid;gap:13px}.context-links a{font-size:13px;line-height:1.8;color:var(--muted)}.context-links a:hover{color:var(--blue)}.linked-resources{margin-top:34px}.linked-resources>h2{font-size:21px;font-weight:600}.linked-resources .inline-resource{margin-top:12px}.article h1{font-size:32px}#mobile-nav .nav-group summary{font-size:15px;padding-top:12px;padding-bottom:12px}#mobile-nav .nav-children{margin-left:23px}#mobile-nav .nav-entry small{display:inline-block}
@media(max-width:1200px){.sidebar{width:246px;padding-left:12px;padding-right:12px}.page{margin-left:246px}.home-directory{column-gap:26px}.directory-group h3{font-size:17px}.article h1{font-size:30px}}
@media(max-width:1000px){.sidebar{display:none}.page{margin-left:0}}
@media(max-width:700px){.home-directory{grid-template-columns:1fr;row-gap:25px}.directory-group{padding-top:19px}.directory-group h3{font-size:19px}.directory-group li a{font-size:15px;line-height:1.8;padding:7px 0}.directory-group ul{margin-top:10px}.directory-all{font-size:14px;margin-top:7px}.reading-intro-link{font-size:14px;align-items:flex-start;line-height:1.8;margin-top:10px;padding-top:13px}.reading-intro-link>svg{margin-top:4px;flex-shrink:0}.reading-intro-link>svg:last-child{display:none}.topics{margin-top:15px}.entry-row-link{padding:19px 18px;gap:12px;flex-wrap:wrap}.entry-row-link>div{width:calc(100% - 35px)}.entry-row-link .entry-status{margin-left:31px;margin-top:-4px}.entry-row-link>svg{margin-left:auto;margin-top:0}.reading-pager{gap:11px;margin-top:29px;padding-top:22px}.pager-link{padding:13px}.pager-label{font-size:13px;gap:4px;display:grid}.pager-link strong{font-size:14px}.article h1{font-size:28px;line-height:1.5}.pending-article{padding-top:29px}.pending-article>p{font-size:16px}.pending-article h2{font-size:20px}.preview-layout .article-heading{padding-bottom:24px}.preview-layout .article-meta{flex-wrap:wrap;gap:8px 17px}}
.topic-nav .nav-group[open]>summary{position:sticky;top:0;z-index:1}