:root{--bg:#f3f6f8;--surface:#fff;--surface-muted:#eef3f5;--line:#d8e0e5;--line-strong:#b9c7cf;--text:#14212b;--muted:#61707b;--accent:#2563d9;--accent-soft:#e7efff;--teal:#087d78;--teal-soft:#e2f4f1;--container:1240px;--hero-width:min(84vw, 1420px);--layout-viewport-width:100vw;--layout-hero-width:min(84vw, 1420px);--radius:14px;--topbar-offset:56px;--section-gap:16px;--grid-gap:16px}*{box-sizing:border-box}html{scroll-behavior:smooth}body{color:var(--text);background:var(--bg);margin:0;font-family:Segoe UI,PingFang SC,Microsoft YaHei,system-ui,sans-serif}a{color:inherit;text-decoration:none}button,input{font:inherit}.page-shell{width:var(--hero-width);margin:var(--section-gap) auto 56px}.masthead,.main-nav,.announcement-bar,.hero-main,.sidebar-panel,.category-section,.feed-card,.quick-card{border:1px solid var(--line);background:var(--surface)}.topbar-left,.topbar-right,.main-nav,.search-tags{flex-wrap:wrap;gap:14px;display:flex}.masthead-wrap{padding-top:calc(var(--topbar-offset) + var(--section-gap))}.site-topbar{z-index:1000;backdrop-filter:blur(16px);background:#ffffffe6;border-bottom:1px solid #bdbdb6b3;width:100%;position:fixed;inset:0 0 auto}.topbar-shell{width:var(--hero-width);min-height:56px;color:var(--muted);justify-content:space-between;align-items:center;gap:16px;margin:0 auto;font-size:15px;display:flex}.topbar-left a,.topbar-right a,.topbar-login-trigger{min-height:34px;color:inherit;cursor:pointer;background:0 0;border:0;align-items:center;padding:0 2px;transition:color .16s,transform .16s;display:inline-flex;position:relative}.topbar-left a:after,.topbar-right a:after,.topbar-login-trigger:after{content:"";transform-origin:50%;background:var(--text);width:100%;height:2px;transition:transform .16s;position:absolute;bottom:4px;left:0;transform:scaleX(0)}.topbar-left a:hover:after,.topbar-right a:hover:after,.topbar-login-trigger:hover:after{transform:scaleX(1)}.topbar-left a.is-current:after,.topbar-right a.is-current:after{transform:scaleX(1)}.topbar-login-trigger:focus-visible,.auth-dialog-close:focus-visible,.auth-mode-tab:focus-visible,.auth-form input:focus-visible,.auth-submit:focus-visible{outline-offset:3px;outline:2px solid #4772e7}.auth-dialog{border:1px solid var(--line-strong);background:var(--surface);width:min(100% - 32px,420px);color:var(--text);border-radius:14px;margin:auto;padding:0;box-shadow:0 22px 72px #131c3038}.auth-dialog::backdrop{backdrop-filter:blur(3px);background:#161b2461}.auth-dialog-shell{gap:20px;padding:24px;display:grid}.auth-dialog-head{justify-content:space-between;align-items:start;gap:16px;display:flex}.auth-dialog-head h2{margin:5px 0 0;font-size:25px;line-height:1.1}.auth-dialog-close{border:1px solid var(--line);background:var(--surface);width:32px;height:32px;color:var(--muted);cursor:pointer;border-radius:8px;justify-content:center;align-items:center;padding:0;font-family:Arial,sans-serif;font-size:20px;line-height:1;display:flex}.auth-mode-tabs{border:1px solid var(--line);background:var(--surface-muted);border-radius:9px;grid-template-columns:repeat(2,minmax(0,1fr));padding:3px;display:grid}.auth-mode-tab{min-height:36px;color:var(--muted);cursor:pointer;background:0 0;border:0;border-radius:6px}.auth-mode-tab.is-active{background:var(--surface);color:var(--text);font-weight:600;box-shadow:0 1px 3px #131c301a}.auth-form{gap:14px;display:grid}.auth-form.is-hidden{display:none}.auth-form label{color:#505a69;gap:7px;font-size:13px;display:grid}.auth-form input{border:1px solid var(--line-strong);min-height:44px;color:var(--text);background:#fff;border-radius:8px;padding:0 12px}.auth-form input::placeholder{color:#9aa1ac}.auth-submit{color:#fff;cursor:pointer;background:#202124;border:1px solid #202124;border-radius:8px;min-height:44px;margin-top:4px;font-weight:600}.auth-feedback{color:#a24a3d;min-height:18px;margin:-8px 0 0;font-size:12px;line-height:1.5}.about-page{width:var(--hero-width);padding-top:calc(var(--topbar-offset) + var(--section-gap));margin:0 auto 56px}.about-head{border-bottom:1px solid var(--line-strong);grid-template-columns:minmax(0,1fr) minmax(300px,.6fr);align-items:end;gap:28px;min-height:176px;padding:24px 2px;display:grid}.about-head h1,.about-statement h2,.about-principle h2{margin:0;line-height:1.12}.about-head h1{margin-top:8px;font-size:36px}.about-head>p,.about-statement p,.about-principle p{color:var(--muted);margin:0;font-size:15px;line-height:1.75}.about-statement{border-bottom:1px solid var(--line);grid-template-columns:160px minmax(0,1fr);gap:28px;padding:32px 2px;display:grid}.about-statement-label,.about-principle>span{color:#7b8493;letter-spacing:.12em;text-transform:uppercase;font-size:11px}.about-statement>div:last-child{gap:12px;max-width:760px;display:grid}.about-statement h2{font-size:28px}.about-principles{border-bottom:1px solid var(--line-strong);grid-template-columns:repeat(3,minmax(0,1fr));display:grid}.about-principle{border-right:1px solid var(--line);align-content:start;gap:12px;min-height:214px;padding:24px 20px 24px 0;display:grid}.about-principle+.about-principle{padding-left:20px}.about-principle:last-child{border-right:0}.about-principle h2{font-size:20px}.masthead{width:var(--hero-width);background:linear-gradient(90deg,#1f2d4c05 0 1px,#0000 1px) 0 0/22px 100%,linear-gradient(#fcfcfa 0%,#fff 100%);border:1px solid #161b2d14;border-radius:16px;grid-template-columns:220px minmax(0,1fr) 320px;gap:18px;min-height:148px;margin:0 auto;padding:18px 22px;display:grid;position:relative;box-shadow:0 10px 28px #131c300d}.masthead-copy,.masthead-core,.masthead-digest{min-width:0}.masthead-copy{border-right:1px solid #161b2d14;align-content:space-between;gap:14px;padding-right:8px;display:grid}.masthead-sidehead{gap:8px;display:grid}.masthead-kicker{color:#7b8493;letter-spacing:.12em;text-transform:uppercase;align-items:center;width:fit-content;font-size:11px;display:inline-flex}.masthead-copy h1,.hero-main h2,.section-header h2,.feed-card h3,.sidebar-panel h3{margin:0;line-height:1.15}.masthead-copy h1{letter-spacing:-.04em;font-size:clamp(24px,2.2vw,30px);line-height:1.08}.masthead-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;display:grid}.masthead-stats div{background:#fffc;border:1px solid #161b2d14;border-radius:10px;gap:4px;padding:10px 12px;display:grid}.masthead-stats strong{font-size:18px;line-height:1}.masthead-stats span,.search-tags,.announcement-track,.hero-main p,.sidebar-panel p,.section-header p,.category-card p,.feed-card p,.quick-card p,.sidebar-list{color:var(--muted);line-height:1.7}.masthead-stats span{font-size:11px}.masthead-core{align-content:center;gap:12px;display:grid}.masthead-track{flex-wrap:wrap;gap:0;display:flex}.track-chip{color:#505a69;background:#fff;border:1px solid #11182714;border-right:0;justify-content:center;align-items:center;min-height:34px;padding:0 16px;font-size:13px;display:inline-flex}.track-chip:first-child{border-radius:10px 0 0 10px}.track-chip:last-child{border-right:1px solid #11182714;border-radius:0 10px 10px 0}.track-chip.is-active{color:#f5f7fb;background:#171b28}.masthead-search{gap:8px;display:grid}.search-shell{background:#fff;border:1px solid #1118271a;border-radius:14px;justify-content:space-between;align-items:center;gap:16px;min-height:46px;padding:0 8px 0 14px;display:flex}.search-shell span{color:#9198a5;font-size:14px}.search-shell button{color:#171717;background:#f4f5f7;border:1px solid #1118271a;border-radius:10px;min-height:34px;padding:0 14px;font-size:13px}.search-tags{color:#737b88;gap:8px 14px;font-size:12px}.search-tags a{color:#2c3648}.masthead-digest{align-content:start;gap:10px;padding-left:2px;display:grid}.digest-meta{justify-content:space-between;align-items:center;gap:12px;display:flex}.digest-meta a{color:#667087;font-size:12px}.digest-label{color:#7f8aa3;letter-spacing:.08em;text-transform:uppercase;font-size:11px}.digest-list{gap:8px;margin:0;padding:0;list-style:none;display:grid}.digest-list li{color:#434f64;border-bottom:1px solid #161b2d0f;grid-template-columns:minmax(0,1fr) auto;align-items:start;gap:10px;padding:8px 0;font-size:13px;line-height:1.45;display:grid}.digest-list li:last-child{border-bottom:0}.digest-list time{color:#8a94a7;font-size:11px}.workspace-shell{gap:var(--grid-gap);grid-template-columns:180px minmax(0,1fr);align-items:start;display:grid}.article-page-wrap{width:var(--hero-width);padding-top:calc(var(--topbar-offset) + var(--section-gap));margin:0 auto}.article-page-head,.article-toolbar,.article-card,.article-sidebar,.article-detail-card{border:1px solid var(--line);background:var(--surface)}.article-page-head{border-radius:16px;grid-template-columns:minmax(0,1fr) 420px;align-items:stretch;gap:18px;min-height:148px;padding:18px 22px;display:grid;box-shadow:0 10px 28px #131c300d}.article-page-copy,.article-page-tools,.article-toolbar-main,.article-detail-card{min-width:0}.article-page-copy{align-content:center;gap:8px;display:grid}.article-page-kicker,.article-thumb-badge{color:#7b8493;letter-spacing:.12em;text-transform:uppercase;align-items:center;width:fit-content;font-size:11px;display:inline-flex}.article-page-copy h1,.article-toolbar h2,.article-card h3,.article-detail-card h1{margin:0;line-height:1.1}.article-page-copy h1{letter-spacing:-.04em;font-size:clamp(28px,2.6vw,34px)}.article-page-copy p,.article-toolbar p,.article-detail-lead,.article-detail-body p{color:var(--muted);margin:0;line-height:1.7}.article-page-tools{align-content:center;gap:12px;display:grid}.article-search-shell{background:#fff;border:1px solid #1118271a;border-radius:14px;justify-content:space-between;align-items:center;gap:16px;min-height:48px;padding:0 8px 0 14px;display:flex}.article-search-shell span{color:#9198a5;font-size:14px}.article-search-shell button{color:#171717;background:#f4f5f7;border:1px solid #1118271a;border-radius:10px;min-height:34px;padding:0 14px;font-size:13px}.article-page-stats{grid-template-columns:repeat(3,minmax(0,1fr));gap:10px;display:grid}.article-page-stats div{background:#ffffffd1;border:1px solid #161b2d14;border-radius:12px;gap:4px;padding:12px;display:grid}.article-page-stats strong{font-size:18px;line-height:1}.article-page-stats span{color:#6d7480;font-size:12px}.article-workspace{gap:var(--grid-gap);grid-template-columns:220px minmax(0,1fr);align-items:start;display:grid}.article-outline{border:1px solid var(--line);background:var(--surface)}.topic-index-page,.topic-detail-page{width:var(--hero-width);padding-top:calc(var(--topbar-offset) + var(--section-gap));margin:0 auto 56px}.topic-index-head{border-bottom:1px solid var(--line-strong);justify-content:space-between;align-items:end;gap:24px;min-height:104px;padding:18px 4px 16px;display:flex}.topic-index-head h1,.topic-detail-heading h1,.topic-path-titlebar h2,.topic-stage-head h3{margin:0;line-height:1.12}.topic-index-head h1{margin-top:6px;font-size:34px}.topic-index-count{color:var(--muted);align-items:baseline;gap:8px;font-size:13px;display:flex}.topic-index-count strong{color:var(--text);font-size:30px;line-height:1}.topic-index-toolbar{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:12px 4px;display:flex}.topic-filter-list{border:1px solid var(--line);background:var(--surface);border-radius:10px;align-items:center;display:inline-flex;overflow:hidden}.topic-filter{border:0;border-right:1px solid var(--line);min-width:64px;min-height:36px;color:var(--muted);cursor:pointer;background:0 0;justify-content:center;align-items:center;padding:0 14px;transition:color .16s,background-color .16s;display:inline-flex}.topic-filter:last-child{border-right:0}.topic-filter:hover,.topic-filter:focus-visible{color:var(--text);background:var(--surface-muted)}.topic-filter.is-active{color:#fff;background:#202124}.topic-filter:focus-visible,.topic-catalog-item:focus-visible,.topic-material-link:focus-visible,.topic-path-outline a:focus-visible{outline-offset:3px;outline:2px solid #4772e7}.topic-filter-result{color:var(--muted);font-size:13px}.topic-catalog{display:grid}.topic-catalog-item{border-bottom:1px solid var(--line);grid-template-columns:64px minmax(230px,1fr) minmax(300px,.9fr) 110px 24px;align-items:center;gap:18px;min-height:152px;padding:18px 4px;transition:background-color .16s,border-color .16s;display:grid;position:relative}.topic-catalog-item:before{content:"";background:var(--topic-accent);width:3px;height:42px;position:absolute;left:0}.topic-catalog-item:hover{border-color:var(--line-strong);background:#ffffff9e}.topic-catalog-item.is-hidden{display:none}.topic-catalog-index{color:#a1a19a;font-variant-numeric:tabular-nums;padding-left:14px;font-size:25px}.topic-catalog-copy{gap:7px;min-width:0;display:grid}.topic-catalog-label{color:var(--topic-accent);font-size:12px;font-weight:600}.topic-catalog-copy h2{margin:0;font-size:21px;line-height:1.25}.topic-catalog-copy p{color:var(--muted);margin:0;font-size:13px;line-height:1.65}.topic-catalog-steps{grid-template-columns:repeat(3,minmax(0,1fr));margin:0;padding:0;list-style:none;display:grid}.topic-catalog-steps li{border-left:1px solid var(--line);gap:4px;min-width:0;padding:2px 12px;display:grid}.topic-catalog-steps span{color:#999a94;font-variant-numeric:tabular-nums;font-size:10px}.topic-catalog-steps strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:500;overflow:hidden}.topic-catalog-meta{color:var(--muted);gap:5px;font-size:11px;display:grid}.topic-catalog-arrow{color:#73746e;font-size:20px;transition:color .16s}.topic-catalog-item:hover .topic-catalog-arrow{color:var(--topic-accent)}.topic-detail-page>.article-detail-breadcrumb{padding:0 2px 12px}.topic-detail-header{border-top:1px solid var(--line-strong);border-bottom:1px solid var(--line-strong);grid-template-columns:minmax(0,1fr) 390px;align-items:end;gap:28px;padding:20px 2px 22px;display:grid}.topic-detail-heading{gap:10px;min-width:0;display:grid}.topic-detail-labels{color:#526070;flex-wrap:wrap;gap:8px 14px;font-size:12px;display:flex}.topic-detail-labels span+span:before{content:"·";color:#a0a39d;margin-right:14px}.topic-detail-heading h1{font-size:clamp(28px,3vw,38px)}.topic-detail-heading p{max-width:720px;color:var(--muted);margin:0;font-size:15px;line-height:1.7}.topic-detail-facts{grid-template-columns:repeat(4,minmax(0,1fr));margin:0;display:grid}.topic-detail-facts div{border-left:1px solid var(--line);gap:6px;padding-left:16px;display:grid}.topic-detail-facts dt{color:var(--muted);font-size:11px}.topic-detail-facts dd{font-variant-numeric:tabular-nums;margin:0;font-size:17px;font-weight:650}.topic-path-layout{gap:var(--grid-gap);margin-top:var(--section-gap);grid-template-columns:minmax(0,1fr) 260px;align-items:start;display:grid}.topic-path-main{gap:var(--section-gap);min-width:0;display:grid}.topic-path-titlebar{justify-content:space-between;align-items:end;gap:16px;padding:2px 2px 0;display:flex}.topic-path-titlebar h2{margin-top:4px;font-size:24px}.topic-path-titlebar>span{color:var(--muted);font-size:12px}.topic-stage-list{gap:12px;margin:0;padding:0;list-style:none;display:grid}.topic-stage{scroll-margin-top:calc(var(--topbar-offset) + var(--section-gap));grid-template-columns:52px minmax(0,1fr);gap:12px;display:grid}.topic-stage-marker{border:1px solid var(--line-strong);background:var(--bg);color:#62645e;font-variant-numeric:tabular-nums;border-radius:50%;align-self:start;place-items:center;width:44px;height:44px;font-size:12px;font-weight:650;display:grid}.topic-stage-body{border:1px solid var(--line);background:var(--surface);border-radius:12px;overflow:hidden}.topic-stage-head{grid-template-columns:minmax(180px,.72fr) minmax(260px,1fr);align-items:end;gap:24px;padding:16px 18px;display:grid}.topic-stage-head>div{gap:5px;display:grid}.topic-stage-head span,.topic-stage-complete>span{color:#777a74;font-size:11px}.topic-stage-head h3{font-size:20px}.topic-stage-head p,.topic-stage-complete p{color:var(--muted);margin:0;font-size:13px;line-height:1.65}.topic-stage-materials{border-top:1px solid var(--line)}.topic-material-link{border-bottom:1px solid #e9e9e4;grid-template-columns:48px minmax(0,1fr) auto 20px;align-items:center;gap:12px;min-height:48px;padding:0 18px;transition:background-color .16s;display:grid}.topic-material-link:last-child{border-bottom:0}.topic-material-link:hover{background:#f7f7f4}.topic-material-type{color:#6c6e68;font-size:11px}.topic-material-link strong{text-overflow:ellipsis;white-space:nowrap;font-size:13px;font-weight:550;overflow:hidden}.topic-material-meta{color:#8a8c86;font-size:11px}.topic-material-arrow{color:#7e807a}.topic-stage-complete{border-top:1px solid var(--line);background:#f7f7f4;grid-template-columns:76px minmax(0,1fr);align-items:center;gap:12px;min-height:50px;padding:10px 18px;display:grid}.topic-path-side{top:calc(var(--topbar-offset) + var(--section-gap));gap:12px;display:grid;position:sticky}.topic-path-outline,.topic-side-note{border:1px solid var(--line);background:var(--surface);border-radius:12px}.topic-side-heading{border-bottom:1px solid var(--line);padding:13px 14px 11px;font-size:13px;font-weight:650}.topic-path-outline ol{margin:0;padding:6px;list-style:none}.topic-path-outline a{color:#555850;border-radius:8px;grid-template-columns:30px minmax(0,1fr);align-items:center;gap:8px;min-height:42px;padding:0 8px;transition:color .16s,background-color .16s;display:grid}.topic-path-outline a:hover{color:var(--text);background:var(--surface-muted)}.topic-path-outline a span{color:#989a94;font-variant-numeric:tabular-nums;font-size:10px}.topic-path-outline a strong{font-size:12px;font-weight:550}.topic-side-note dl{gap:9px;margin:0;padding:12px 14px 14px;display:grid}.topic-side-note dl div{justify-content:space-between;gap:12px;font-size:11px;display:flex}.topic-side-note dt{color:var(--muted)}.topic-side-note dd{margin:0;font-weight:550}.topic-path-finish{border:1px solid var(--line-strong);color:#fff;background:#202124;border-radius:12px;grid-template-columns:minmax(0,1fr) auto;align-items:center;gap:20px;padding:16px 18px;display:grid}.topic-path-finish>div{gap:5px;display:grid}.topic-path-finish span{color:#b9bbb5;font-size:11px}.topic-path-finish strong{font-size:15px;line-height:1.5}.topic-path-finish ul{color:#d6d7d2;flex-wrap:wrap;justify-content:flex-end;gap:7px 16px;margin:0;padding:0;font-size:11px;list-style:none;display:flex}.topic-path-finish li:before{content:"✓";color:#91d4b8;margin-right:6px}.article-detail-workspace{align-items:start;gap:var(--grid-gap);grid-template-columns:minmax(0,1fr) 260px;display:grid}.article-sidebar{top:calc(var(--topbar-offset) + var(--section-gap));border-radius:16px;gap:12px;padding:14px 12px;display:grid;position:sticky}.article-sidebar-head{gap:4px;padding:2px 6px 0;display:grid}.article-sidebar-head h2{margin:0;font-size:18px;line-height:1.1}.article-filter-list{gap:8px;display:grid}.article-filter-item{color:#586172;text-align:left;cursor:pointer;background:0 0;border:1px solid #0000;border-radius:14px;justify-content:space-between;align-items:center;gap:12px;width:100%;min-height:72px;padding:12px;transition:border-color .16s,background .16s,color .16s;display:flex}.article-filter-item:hover{background:#faf8ff;border-color:#ece7fb}.article-filter-item.is-active{color:#7f56d9;background:#f1eafe;border-color:#dfd3ff}.article-filter-main{gap:5px;min-width:0;display:grid}.article-filter-main strong{font-size:15px;line-height:1.15}.article-filter-main small{color:#6f7784;font-size:12px;line-height:1.5}.article-filter-item.is-active .article-filter-main small{color:#7c6aab}.article-filter-count{color:#566173;background:#eff2f7;border-radius:999px;flex:none;justify-content:center;align-items:center;min-width:32px;min-height:28px;padding:0 9px;font-size:12px;font-weight:600;display:inline-flex}.article-filter-item.is-active .article-filter-count{color:#7f56d9;background:#7f56d91f}.article-main{gap:var(--section-gap);display:grid}.article-toolbar{border-radius:16px;justify-content:space-between;align-items:end;gap:16px;padding:18px 20px;display:flex}.article-toolbar-main{gap:6px;display:grid}.article-toolbar h2{font-size:26px}.article-toolbar-side{justify-items:end;gap:10px;display:grid}.article-sort-tabs{flex-wrap:wrap;gap:8px;display:flex}.article-sort-tab,.article-pagination a{border:1px solid var(--line);color:#5b6471;background:#f4f5f7;border-radius:999px;min-height:32px;padding:0 12px}.article-result-count{color:#6b7482;font-size:13px}.article-list-panel.is-hidden{display:none}.article-list{gap:var(--section-gap);display:grid}.article-card{border-radius:16px;overflow:hidden}.article-card-main{grid-template-columns:minmax(0,1fr) 216px;gap:18px;padding:18px 20px;display:grid}.article-card-copy{align-content:start;gap:10px;min-width:0;display:grid}.article-card-meta,.article-detail-breadcrumb{color:#707985;flex-wrap:wrap;gap:8px 14px;font-size:12px;display:flex}.article-card h3{letter-spacing:-.03em;font-size:24px}.article-card p{color:#5f6976;-webkit-line-clamp:3;-webkit-box-orient:vertical;margin:0;font-size:14px;line-height:1.75;display:-webkit-box;overflow:hidden}.article-tag-list{flex-wrap:wrap;gap:8px;margin:0;padding:0;list-style:none;display:flex}.article-tag-list li{color:#4f5a69;background:#eff2f7;border-radius:999px;justify-content:center;align-items:center;min-height:28px;padding:0 10px;font-size:12px;display:inline-flex}.article-card-thumb,.article-detail-cover{background:linear-gradient(135deg,#4460ff1f,#bb8eff38),linear-gradient(#fcfcfa 0%,#f4f5fa 100%);border:1px solid #161b2d14;border-radius:16px;position:relative}.article-card-thumb{align-content:space-between;min-height:148px;padding:14px;display:grid}.article-card-thumb span{color:#5d6879;align-self:end;font-size:13px}.article-thumb-badge{color:#556175}.article-pagination{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.article-pagination a{justify-content:center;align-items:center;font-size:13px;display:inline-flex}.article-detail-shell{gap:var(--section-gap);display:grid}.article-detail-card{border-radius:16px;gap:16px;padding:22px;display:grid}.article-detail-card h1{letter-spacing:-.04em;font-size:clamp(30px,3vw,38px)}.article-detail-lead{font-size:15px}.article-detail-cover{color:#566173;place-items:center;min-height:240px;font-size:14px;display:grid}.article-detail-body{gap:12px;display:grid}.article-detail-footnav{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px;display:grid}.article-outline{top:calc(var(--topbar-offset) + var(--section-gap));border-radius:16px;gap:12px;padding:14px 12px;display:grid;position:sticky}.article-outline-head{gap:4px;padding:2px 6px 0;display:grid}.article-outline h2{font-size:18px}.article-outline-list{gap:6px;display:grid}.article-outline-item{color:#596274;border-radius:12px;padding:9px 12px;font-size:13px;line-height:1.55;display:block}.article-outline-item.is-sub{padding-left:24px;font-size:12px}.article-outline-item.is-active{color:#7f56d9;background:#f1eafe;font-weight:600}.markdown-body>:first-child{margin-top:0}.markdown-body>:last-child{margin-bottom:0}.markdown-body h2,.markdown-body h3,.markdown-body h4{letter-spacing:-.03em;scroll-margin-top:calc(var(--topbar-offset) + 18px);margin:1.8em 0 .7em;line-height:1.2}.markdown-body h2{font-size:28px}.markdown-body h3{font-size:22px}.markdown-body h4{font-size:18px}.markdown-body p,.markdown-body li,.markdown-body blockquote{font-size:15px;line-height:1.9}.markdown-body p,.markdown-body ul,.markdown-body ol,.markdown-body blockquote,.markdown-body pre,.markdown-body table,.markdown-body hr{margin:0 0 1.15em}.markdown-body ul,.markdown-body ol{padding-left:1.4em}.markdown-body li+li{margin-top:.45em}.markdown-body strong{font-weight:700}.markdown-body blockquote{color:#4e5970;background:#f7f4ff;border-left:4px solid #cfc3ff;border-radius:0 14px 14px 0;padding:12px 16px}.markdown-body code{background:#f1f3f8;border-radius:8px;padding:.18em .45em;font-family:Cascadia Code,Consolas,monospace;font-size:.92em}.markdown-body pre{background:#111827;border:1px solid #e5e7ee;border-radius:16px;padding:16px;overflow:auto}.markdown-body pre code{color:#f5f7fb;background:0 0;padding:0}.markdown-body table{border-collapse:collapse;border:1px solid #e5e7ee;border-radius:14px;width:100%;overflow:hidden}.markdown-body th,.markdown-body td{text-align:left;border-bottom:1px solid #e5e7ee;padding:12px 14px;font-size:14px}.markdown-body th{background:#f5f6fa}.markdown-body tr:last-child td{border-bottom:0}.markdown-body hr{background:#e3e6ed;border:0;height:1px}.category-rail{top:calc(var(--topbar-offset) + var(--section-gap));border:1px solid var(--line);background:#ffffffdb;border-radius:16px;gap:6px;padding:12px 10px;display:grid;position:sticky}.rail-item{color:#586172;border-radius:12px;align-items:center;gap:10px;min-height:40px;padding:0 12px;font-size:14px;display:flex}.rail-item.is-active{color:#7f56d9;background:#f1eafe;font-weight:600}.rail-marker{border:1px solid;border-radius:3px;width:10px;height:10px}.workspace-main{gap:var(--section-gap);display:grid}.preview-section{scroll-margin-top:calc(var(--topbar-offset) + 8px);gap:12px;display:grid}.preview-section-head{justify-content:space-between;align-items:end;gap:14px;display:flex}.market-strip{gap:var(--grid-gap);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.market-card,.resource-panel,.featured-card,.promo-banner{border:1px solid var(--line);background:var(--surface)}.market-card{border-radius:12px;gap:4px;padding:12px 14px;display:grid}.market-card strong{font-size:14px}.market-card span,.market-card time{color:#6d7480;font-size:12px}.promo-strip{gap:var(--grid-gap);grid-template-columns:minmax(0,1.05fr) minmax(0,.95fr);display:grid}.promo-banner{color:#fff;border-radius:14px;min-height:92px;padding:14px 16px}.promo-kicker{letter-spacing:.08em;text-transform:uppercase;opacity:.84;font-size:11px}.promo-banner h2{margin:10px 0 6px;font-size:clamp(18px,2vw,28px);line-height:1.08}.promo-banner p{color:#ffffffdb;margin:0;font-size:13px}.resource-panel,.featured-section{gap:16px;display:grid}.resource-panel{border-radius:14px;padding:16px 18px 18px}.resource-panel-head{justify-content:space-between;align-items:end;gap:16px;display:flex}.resource-title-group{gap:4px;display:grid}.resource-title-group h2,.featured-section h2{margin:0;font-size:24px;line-height:1.08}.resource-tabs{flex-wrap:wrap;gap:8px;display:flex}.resource-tab{border:1px solid var(--line);color:#5b6471;background:#f4f5f7;border-radius:999px;min-height:30px;padding:0 12px}.resource-tab.is-active{color:#7f56d9;background:#efeafe;border-color:#d9cbff}.official-link-grid{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;display:grid}.official-link{background:#fafafa;border:1px solid #eaebee;border-radius:10px;align-items:center;gap:10px;min-height:44px;padding:0 12px;font-size:14px;display:flex}.official-dot{background:linear-gradient(135deg,#5c75ff 0%,#8b52ff 100%);border-radius:50%;flex:none;width:9px;height:9px}.nav-card-grid{gap:var(--grid-gap);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.nav-card,.route-card{border:1px solid var(--line);background:var(--surface)}.nav-card{border-radius:14px;grid-template-columns:46px minmax(0,1fr);align-items:start;gap:12px;min-height:92px;padding:14px 16px;display:grid}.nav-card-icon{background:linear-gradient(135deg,#f1eafe 0%,#dce6ff 100%);border-radius:14px;width:46px;height:46px}.nav-card-copy{min-width:0}.nav-card strong{margin-bottom:6px;font-size:17px;line-height:1.1;display:block}.nav-card p{color:#69717d;-webkit-line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;margin:0;font-size:13px;line-height:1.5;display:-webkit-box;overflow:hidden}.featured-section{gap:12px}.featured-variant{gap:10px;display:grid}.variant-label{color:#7a8392;font-size:12px}.featured-grid{gap:var(--grid-gap);display:grid}.featured-grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}.featured-grid-5{grid-template-columns:repeat(5,minmax(0,1fr))}.featured-grid-6{grid-template-columns:repeat(6,minmax(0,1fr))}.featured-card{border-radius:14px;grid-template-rows:1fr auto;gap:10px;min-height:146px;padding:14px 14px 12px;display:grid}.featured-card-head{align-items:center;gap:12px;min-height:100%;display:flex}.featured-logo{background:linear-gradient(135deg,#161b28 0%,#6774ff 100%);border-radius:14px;flex:none;width:48px;height:48px}.featured-copy{min-width:0}.featured-card h3{margin:0;font-size:17px;line-height:1.12}.featured-copy p{color:#69717d;-webkit-line-clamp:2;word-break:break-word;-webkit-box-orient:vertical;margin:5px 0 0;font-size:13px;line-height:1.55;display:-webkit-box;overflow:hidden}.featured-actions{flex-wrap:wrap;gap:6px;margin-top:auto;display:flex}.featured-actions a{color:#5a6472;background:#eff2f7;border-radius:999px;flex:1 1 0;justify-content:center;align-items:center;min-height:28px;padding:0 10px;font-size:12px;display:inline-flex}.featured-card.is-compact{min-height:132px;padding:12px}.featured-card.is-compact h3{font-size:15px}.featured-card.is-compact .featured-logo{border-radius:12px;width:42px;height:42px}.featured-card.is-compact .featured-copy p{font-size:12px}.featured-card.is-tight{grid-template-rows:1fr;align-content:start;min-height:88px;padding:10px 12px}.featured-card.is-tight .featured-logo{border-radius:10px;width:32px;height:32px}.featured-card.is-tight h3{font-size:14px;line-height:1.12}.featured-card.is-tight .featured-copy p{-webkit-line-clamp:2;margin-top:3px;font-size:12px;line-height:1.45}.featured-card.is-tight .featured-card-head{gap:10px}.route-grid{gap:var(--grid-gap);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.route-card{border-radius:14px;align-content:start;gap:10px;min-height:96px;padding:12px 14px;display:grid}.route-card-head{gap:3px;display:grid}.route-card h3{margin:0;font-size:16px;line-height:1.1}.route-card-head span{color:#6f7784;font-size:12px;line-height:1.4}.route-tags{flex-wrap:wrap;gap:6px;margin:0;padding:0;list-style:none;display:flex}.route-tags li{color:#4f5a69;background:#eff2f7;border-radius:999px;justify-content:center;align-items:center;min-height:24px;padding:0 10px;font-size:12px;display:inline-flex}.main-nav{margin-top:var(--section-gap);border-radius:12px;gap:0;padding:0 10px}.main-nav a{border-right:1px solid var(--line);padding:14px 16px;font-size:14px}.main-nav a:last-child{border-right:0}.announcement-bar{margin-top:var(--section-gap);border-radius:12px;grid-template-columns:88px minmax(0,1fr);align-items:center;gap:12px;padding:12px 14px;display:grid}.announcement-label,.block-label,.section-kicker{color:var(--muted);font-size:12px}.announcement-label{border:1px solid var(--line);background:var(--surface-muted);border-radius:10px;justify-content:center;align-items:center;min-height:34px;display:inline-flex}.hero-area{gap:var(--grid-gap);margin-top:var(--section-gap);grid-template-columns:minmax(0,2fr) 360px;display:grid}.hero-main,.sidebar-panel,.category-section,.feed-card,.quick-card{border-radius:var(--radius)}.hero-main{min-height:300px;padding:22px}.hero-main h2{margin:14px 0;font-size:clamp(28px,4vw,42px)}.hero-side{gap:var(--grid-gap);display:grid}.sidebar-panel{padding:18px}.sidebar-panel h3{margin:10px 0;font-size:20px}.sidebar-list{margin:0;padding-left:18px}.quick-grid{gap:var(--grid-gap);margin-top:var(--section-gap);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.quick-card,.category-card,.feed-card{padding:18px}.quick-card strong,.category-card strong{margin-bottom:8px;font-size:17px;display:block}.category-section,.content-main{margin-top:var(--section-gap)}.section-header{grid-template-columns:minmax(0,1fr) 420px;align-items:end;gap:20px;margin-bottom:16px;display:grid}.section-header h2{margin-top:8px;font-size:clamp(26px,4vw,34px)}.category-section{padding:20px}.category-grid{gap:var(--grid-gap);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.category-card{border:1px solid var(--line);background:linear-gradient(#fff 0%,#fafaf7 100%);border-radius:12px;min-height:120px}.content-shell{gap:var(--grid-gap);margin-top:var(--section-gap);grid-template-columns:minmax(0,2fr) 340px;display:grid}.feed-list{gap:var(--grid-gap);display:grid}.feed-card h3{margin:10px 0;font-size:24px}@media (width>=1025px){:root{--hero-width:var(--layout-hero-width)}.topbar-shell,.masthead,.article-page-wrap{margin-top:0;margin-right:0;margin-left:calc((var(--layout-viewport-width) - var(--hero-width)) / 2)}.page-shell{margin:var(--section-gap) 0 56px;margin-left:calc((var(--layout-viewport-width) - var(--hero-width)) / 2)}.about-page,.topic-index-page,.topic-detail-page,.resource-detail-page{margin:0 0 56px;margin-left:calc((var(--layout-viewport-width) - var(--hero-width)) / 2)}}.masthead{border:1px solid var(--line-strong);border-top:3px solid var(--accent);background:var(--surface);border-radius:10px;box-shadow:0 12px 32px #14212b0f}.masthead-kicker,.section-kicker,.article-page-kicker,.article-thumb-badge,.topic-index-head .article-page-kicker{color:var(--accent);font-weight:700}.masthead-copy h1{letter-spacing:0}.masthead-stats div{border-color:var(--line);background:#f8fafb;border-radius:8px}.masthead-stats strong{color:var(--accent)}.track-chip{border-color:var(--line);color:#50606c}.track-chip:last-child{border-right-color:var(--line)}.track-chip.is-active{background:var(--accent);color:#fff}.search-shell,.article-search-shell{border-color:var(--line-strong);border-radius:8px}.search-shell button,.article-search-shell button{border-color:var(--accent);background:var(--accent);color:#fff;border-radius:6px}.digest-label,.digest-meta a,.search-tags a,.search-tags button{color:var(--teal)}.search-tags button{font:inherit;cursor:pointer;background:0 0;border:0;padding:0}.category-rail,.article-sidebar,.article-outline{background:#ffffffeb;border-radius:10px}.rail-item{border-radius:6px}.rail-item.is-active{background:var(--accent-soft);color:var(--accent)}.market-card,.resource-panel,.featured-card,.nav-card,.route-card,.article-card,.article-page-head,.article-toolbar,.article-detail-card,.topic-stage-body,.topic-path-outline,.topic-side-note{border-color:var(--line);border-radius:10px}.market-card{gap:6px;position:relative;overflow:hidden}.market-card:before{content:"";background:var(--accent);width:42px;height:3px;position:absolute;top:0;right:0}.market-card:nth-child(2n):before{background:var(--teal)}.market-card strong{color:var(--text)}.promo-banner{border:0;border-radius:10px}.promo-banner-primary{background:#1d4ed8}.promo-banner-secondary{background:#087d78}.promo-banner h2{letter-spacing:0}.resource-panel{padding:18px}.resource-tab,.article-sort-tab,.article-pagination a{border-color:var(--line);background:var(--surface-muted);color:#51616c;border-radius:6px}.resource-tab.is-active,.article-sort-tab.is-active,.article-pagination a.is-current{background:var(--accent-soft);color:var(--accent);border-color:#b8cdf7}.official-link{border-color:var(--line);background:#fbfcfc;border-radius:7px;transition:border-color .16s,background-color .16s,transform .16s}.official-link:hover{background:var(--accent-soft);border-color:#9ab8f0;transform:translateY(-1px)}.official-link.is-hidden{display:none}.official-dot{background:var(--accent);border-radius:2px}.nav-card{border-radius:8px;transition:border-color .16s,box-shadow .16s,transform .16s}.nav-card:hover,.featured-card:hover,.route-card:hover,.article-card:hover{border-color:#9ab8f0;transform:translateY(-2px);box-shadow:0 8px 20px #14212b12}.nav-card-icon{background:var(--accent-soft);border-radius:8px}.nav-card:nth-child(3n+2) .nav-card-icon{background:var(--teal-soft)}.nav-card:nth-child(3n) .nav-card-icon{background:#f1f3f5}.featured-card{border-radius:8px;transition:border-color .16s,box-shadow .16s,transform .16s}.featured-logo{background:var(--accent-soft);border-radius:7px}.featured-card:nth-child(2n) .featured-logo{background:var(--teal-soft)}.featured-category{color:var(--teal);margin-bottom:5px;font-size:11px;font-weight:650;display:block}.featured-actions a{color:var(--accent)}.variant-label{color:var(--teal);font-weight:600}.route-card{border-radius:8px;transition:border-color .16s,box-shadow .16s,transform .16s}.route-tags li{border-color:var(--line);background:var(--surface-muted);color:#4d5f6b;border-radius:5px}.article-page-head,.topic-detail-header{border-top:2px solid var(--accent);box-shadow:0 10px 28px #14212b0d}.catalog-page-head .article-page-copy h1{letter-spacing:0}.catalog-page-head+.topic-index-toolbar{margin-top:12px}.article-tag-list li{background:var(--surface-muted);color:#52636e;border-radius:5px}.article-card-thumb,.article-detail-cover{background:#eaf1f5;border-color:#c9d8df;border-radius:8px}.article-outline-item.is-active,.markdown-body a{color:var(--accent)}.markdown-body blockquote{border-left-color:var(--teal);background:var(--teal-soft);border-radius:0 8px 8px 0}.topic-filter.is-active{background:var(--accent)}.topic-catalog-item:before{width:4px}.topic-path-finish{background:var(--teal-soft);color:var(--text);border-color:#b8dfd8;border-radius:8px}.article-sort-tab:disabled{cursor:not-allowed;opacity:.48}.topic-path-finish span{color:var(--teal)}.topic-path-finish ul{color:#436962}.topic-path-finish li:before{color:var(--teal)}.about-head h1{letter-spacing:0}.auth-dialog{border-color:var(--line-strong);border-radius:10px}.auth-submit{border-color:var(--accent);background:var(--accent);border-radius:7px}.product-directory{--directory-ink:#182934;--directory-muted:#647783;--directory-blue:#2563d9;--directory-blue-soft:#edf4ff}.product-directory .masthead{background:#fff;border-color:#cbd9e0;border-top-width:3px;border-radius:10px;overflow:hidden;box-shadow:0 18px 40px #14212b14}.product-directory .masthead-copy{border-right-color:#e1e9ed;padding-right:20px}.product-directory .masthead-kicker,.product-directory .section-kicker{color:var(--directory-blue);letter-spacing:0}.product-directory .masthead-copy h1,.product-directory .resource-title-group h2{color:var(--directory-ink);letter-spacing:0}.product-directory .masthead-stats div{background:#f7fafb;border-color:#dce6eb}.product-directory .track-chip{color:#536774;background:#f8fafb;border-color:#d8e3e8}.product-directory .track-chip.is-active{border-color:var(--directory-blue);background:var(--directory-blue);color:#fff;font-weight:700}.product-directory .search-shell{border-color:#c5d3da;box-shadow:0 5px 14px #14212b0a}.product-directory .search-shell-action{background:var(--directory-blue);border-radius:5px;align-items:center;min-height:34px;padding:0 14px;font-weight:700;display:inline-flex;color:#fff!important}.product-directory .masthead-digest{padding-left:14px}.product-directory .digest-meta{border-bottom:1px solid #dce6eb;padding-bottom:7px}.product-directory .digest-label,.product-directory .digest-meta a{color:var(--directory-blue)}.product-directory .workspace-shell{grid-template-columns:190px minmax(0,1fr);gap:20px}.product-directory .category-rail{background:#fff;border-color:#cbd9e0;border-radius:10px;gap:4px;padding:10px;box-shadow:0 12px 28px #14212b0d}.directory-rail-head{border-bottom:1px solid #e2e9ed;gap:4px;padding:8px 8px 12px;display:grid}.directory-rail-head span{color:var(--directory-blue);font-size:10px;font-weight:700}.directory-rail-head strong{color:var(--directory-ink);font-size:16px}.product-directory .rail-item{color:#586c78;border-radius:6px;min-height:40px}.product-directory .rail-item.is-active{background:var(--directory-blue-soft);color:var(--directory-blue)}.product-directory .resource-title-group{gap:5px}.product-directory .resource-title-group h2{font-size:26px}.product-directory .market-card{border-color:#d3dfe5;border-radius:8px;gap:7px;min-height:108px;padding:15px;box-shadow:0 6px 16px #14212b09}.product-directory .market-card:before{display:none}.product-directory .market-card:hover{background:#fbfdff;border-color:#9ab8e6}.product-directory .market-card strong{color:var(--directory-ink)}.product-directory .variant-label{color:var(--directory-muted);font-weight:600}.product-directory .featured-card{border-color:#d3dfe5;border-radius:8px;min-height:154px;padding:15px;box-shadow:0 6px 16px #14212b08}.product-directory .featured-card:hover{border-color:#96b6e7;box-shadow:0 12px 24px #14212b14}.product-directory .featured-logo{background:#fff;border:1px solid #e0e8ec;border-radius:8px;place-items:center;width:44px;height:44px;display:grid}.product-directory .featured-logo img{object-fit:contain;width:100%;height:100%;padding:7px;display:block}.product-directory .featured-category{color:#647783;letter-spacing:0;font-size:10px;font-weight:750}.product-directory .featured-card h3{color:var(--directory-ink)}.product-directory .featured-actions{border-top:1px solid #e6ecef;gap:8px;padding-top:9px}.product-directory .featured-actions a{min-height:24px;color:var(--directory-blue);background:0 0;border-radius:0;justify-content:flex-start;padding:0;font-weight:650}.brand-mark{width:24px;height:24px;color:var(--directory-ink);place-items:center;font-size:16px;font-weight:750;display:grid}.brand-mark img{object-fit:contain;width:100%;height:100%;display:block}.brand-mark.is-fallback{color:#526773;background:#edf2f5;border-radius:5px;font-size:13px}.product-directory .resource-panel{background:#fbfcfc;border-color:#ccdce1;border-radius:9px;padding:19px}.product-directory .resource-tab{background:#f4f7f8;border-color:#d6e1e6;border-radius:5px}.product-directory .official-link{background:#fff;border-color:#d6e1e6;border-radius:6px}.product-directory .official-link:hover{background:#fbfdff;border-color:#a4bee6}.product-directory .promo-banner{border-radius:9px}.product-directory .route-card,.product-directory .nav-card{border-color:#d3dfe5;border-radius:8px}.product-directory .nav-card-icon{border-radius:8px;place-items:center;display:grid}.home-footer{--directory-ink:#182934;--directory-muted:#647783;--directory-blue:#2563d9;width:min(100% - 48px, var(--hero-width));color:var(--directory-muted);border-top:1px solid #cbd9e0;margin:8px auto 0;padding:30px 0 22px}.home-footer-inner{justify-content:space-between;align-items:end;gap:32px;display:flex}.home-footer-brand{gap:8px;display:grid}.home-footer-title{width:fit-content;color:var(--directory-ink);align-items:center;gap:9px;font-size:17px;font-weight:750;display:inline-flex}.home-footer-title span{background:var(--directory-blue);color:#fff;border-radius:6px;place-items:center;width:28px;height:28px;font-size:11px;display:grid}.home-footer-brand p{margin:0;font-size:13px;line-height:1.6}.home-footer-links{flex-wrap:wrap;justify-content:flex-end;gap:8px 22px;display:flex}.home-footer-links a{color:#526773;font-size:13px;font-weight:600}.home-footer-links a:hover{color:var(--directory-blue)}.home-footer-meta{color:#82939d;border-top:1px solid #e0e8ec;justify-content:space-between;align-items:center;gap:18px;margin-top:26px;padding-top:15px;font-size:11px;display:flex}.home-footer-records,.home-footer-notice{flex-wrap:wrap;align-items:center;gap:8px 18px;display:flex}.home-footer-records a{color:inherit}.home-footer-records a:hover{color:var(--directory-blue)}.home-footer-police{align-items:center;gap:6px;display:inline-flex}.home-footer-police>span{border:1px solid #9aabb3;border-radius:50% 50% 45% 45%;width:13px;height:13px}@media (width<=1024px){.product-directory .workspace-shell{grid-template-columns:1fr}.product-directory .category-rail{grid-template-columns:repeat(3,minmax(0,1fr));position:static}.product-directory .directory-rail-head{grid-column:1/-1}}@media (width<=680px){.product-directory .category-rail{grid-template-columns:repeat(2,minmax(0,1fr))}.product-directory .market-strip,.product-directory .official-link-grid{grid-template-columns:1fr}.product-directory .resource-title-group h2{font-size:23px}.home-footer{width:min(100% - 24px, var(--hero-width));padding-top:26px}.home-footer-inner{gap:22px;display:grid}.home-footer-links{justify-content:flex-start}.home-footer-meta{gap:8px;margin-top:22px;display:grid}.home-footer-notice{gap:5px 14px}}@media (width<=1024px){:root{--topbar-offset:56px;--hero-width:min(calc(100% - 24px), 1480px)}.workspace-shell,.article-page-head,.article-workspace,.topic-detail-header,.topic-path-layout,.article-detail-workspace,.about-head,.about-statement,.article-card-main,.hero-area,.content-shell,.section-header{grid-template-columns:1fr}.category-rail{grid-template-columns:repeat(3,minmax(0,1fr));position:static}.article-sidebar,.article-outline{position:static}.topic-path-side{grid-template-columns:repeat(2,minmax(0,1fr));position:static}.about-principles{grid-template-columns:1fr}.about-principle,.about-principle+.about-principle{border-right:0;border-bottom:1px solid var(--line);min-height:0;padding:22px 0}.about-principle:last-child{border-bottom:0}.article-filter-list{grid-template-columns:repeat(2,minmax(0,1fr))}.topic-catalog-item{grid-template-columns:56px minmax(220px,1fr) minmax(260px,.9fr) 24px}.topic-catalog-meta{display:none}.article-toolbar{flex-direction:column;align-items:start}.article-toolbar-side{justify-items:start;width:100%}.market-strip,.official-link-grid,.promo-strip,.nav-card-grid,.featured-grid-4,.featured-grid-5{grid-template-columns:repeat(2,minmax(0,1fr))}.featured-grid-6{grid-template-columns:repeat(3,minmax(0,1fr))}.route-grid,.quick-grid,.category-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.masthead{grid-template-columns:1fr;gap:14px;min-height:auto}.masthead-copy{border-bottom:1px solid #161b2d14;border-right:0;grid-template-columns:minmax(0,1fr) auto;align-items:end;padding-bottom:14px;padding-right:0}.masthead-core{gap:10px}.article-page-head{min-height:auto}}@media (width<=680px){:root{--topbar-offset:96px;--hero-width:calc(100% - 16px)}.page-shell{width:var(--hero-width);margin-top:var(--section-gap)}.masthead,.workspace-shell,.article-page-head,.article-workspace,.topic-detail-header,.topic-path-layout,.article-detail-workspace,.about-head,.about-statement,.main-nav,.announcement-bar{flex-direction:column;grid-template-columns:1fr;align-items:stretch}.topbar-shell{width:var(--hero-width);align-items:flex-start;min-height:auto;padding:10px 0}.masthead-wrap,.article-page-wrap,.topic-index-page,.topic-detail-page,.about-page{padding-top:calc(var(--topbar-offset) + var(--section-gap))}.about-head{min-height:0;padding:20px 2px}.about-head h1{font-size:30px}.about-statement{gap:14px;padding:24px 2px}.about-statement h2{font-size:24px}.auth-dialog-shell{padding:20px}.masthead{border-radius:18px;gap:14px;padding:18px 16px}.article-page-head,.article-toolbar,.article-detail-card,.article-outline{border-radius:18px;padding:16px}.article-page-copy h1,.article-toolbar h2{font-size:24px}.article-page-stats,.article-filter-list{grid-template-columns:1fr}.article-filter-item{min-height:64px}.article-card-main{gap:14px;padding:16px}.article-card h3,.article-detail-card h1{font-size:24px}.article-card-thumb,.article-detail-cover{min-height:160px}.article-detail-footnav,.topic-path-side{grid-template-columns:1fr}.topic-index-head{min-height:88px;padding:12px 2px 14px}.topic-index-head h1{font-size:28px}.topic-index-count strong{font-size:24px}.topic-index-toolbar{align-items:start;padding-inline:0}.topic-filter-list{max-width:100%;overflow-x:auto}.topic-filter{min-width:60px;padding:0 12px}.topic-filter-result{display:none}.topic-catalog-item{grid-template-columns:42px minmax(0,1fr) 20px;grid-template-areas:"index copy arrow"".steps steps";gap:12px 10px;min-height:0;padding:16px 2px}.topic-catalog-item:before{height:34px}.topic-catalog-index{grid-area:index;padding-left:10px;font-size:19px}.topic-catalog-copy{grid-area:copy}.topic-catalog-copy h2{font-size:18px}.topic-catalog-steps{grid-area:steps}.topic-catalog-steps li{padding:0 8px}.topic-catalog-arrow{grid-area:arrow}.topic-detail-page>.article-detail-breadcrumb{padding-bottom:10px}.topic-detail-header{gap:18px;padding:16px 2px 18px}.topic-detail-heading h1{font-size:28px}.topic-detail-facts div{padding-left:10px}.topic-detail-facts dd{font-size:15px}.topic-stage{grid-template-columns:38px minmax(0,1fr);gap:8px}.topic-stage-marker{width:34px;height:34px;font-size:10px}.topic-stage-head{grid-template-columns:1fr;gap:8px;padding:14px}.topic-material-link{grid-template-columns:40px minmax(0,1fr) 18px;grid-template-areas:"type title arrow"".meta arrow";gap:3px 8px;min-height:58px;padding:8px 14px}.topic-material-type{grid-area:type}.topic-material-link strong{white-space:normal;grid-area:title}.topic-material-meta{grid-area:meta}.topic-material-arrow{grid-area:arrow}.topic-stage-complete{grid-template-columns:1fr;gap:4px;padding:10px 14px}.topic-path-finish{grid-template-columns:1fr;gap:12px;padding:14px}.topic-path-finish ul{justify-content:flex-start}.masthead-copy{grid-template-columns:1fr;align-items:stretch;gap:12px}.masthead-copy h1{font-size:24px}.track-chip{min-height:34px;padding:0 14px;font-size:13px}.track-chip:first-child,.track-chip:last-child{border-radius:10px}.track-chip{border-right:1px solid #11182714;border-radius:10px}.masthead-track{gap:8px}.search-shell{min-height:46px;padding:0 8px 0 14px}.search-shell button{min-height:34px;padding:0 16px}.topbar-left,.topbar-right{gap:10px 14px;width:100%}.category-rail,.market-strip,.promo-strip,.official-link-grid,.featured-grid-4,.featured-grid-5,.featured-grid-6,.nav-card-grid,.route-grid{grid-template-columns:1fr}.resource-panel-head{flex-direction:column;align-items:start}.resource-title-group h2,.featured-section h2{font-size:24px}.official-link,.rail-item{font-size:14px}.nav-card{grid-template-columns:40px minmax(0,1fr);min-height:84px;padding:12px 14px}.nav-card-icon{border-radius:12px;width:40px;height:40px}.featured-card h3{font-size:15px}.main-nav{padding:0}.main-nav a{border-right:0;border-bottom:1px solid var(--line)}.main-nav a:last-child{border-bottom:0}.announcement-bar{display:block}.announcement-label{margin-bottom:10px}.quick-grid,.category-grid{grid-template-columns:1fr}.hero-main h2,.feed-card h3{font-size:24px}}@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}}.search-shell,.article-search-shell{cursor:pointer;text-align:left;width:100%}.search-shell-action{border:1px solid var(--accent);background:var(--accent);color:#fff;border-radius:6px;justify-content:center;align-items:center;min-height:34px;padding:0 14px;font-size:13px;display:inline-flex}.site-search-dialog{border:1px solid var(--line-strong);background:var(--surface);width:min(100% - 32px,760px);max-height:min(720px,100vh - 48px);color:var(--text);border-radius:10px;margin:auto;padding:0;box-shadow:0 24px 72px #14212b3d}.site-search-dialog::backdrop{backdrop-filter:blur(3px);background:#14212b5c}.site-search-panel{gap:16px;padding:22px;display:grid}.site-search-head{justify-content:space-between;align-items:start;gap:16px;display:flex}.site-search-head h2{margin:5px 0 0;font-size:24px;line-height:1.1}.site-search-close{border:1px solid var(--line);background:var(--surface);width:32px;height:32px;color:var(--muted);cursor:pointer;border-radius:7px;justify-content:center;align-items:center;padding:0;font-family:Arial,sans-serif;font-size:20px;line-height:1;display:flex}.site-search-input-wrap{border:1px solid var(--line-strong);background:#fff;border-radius:8px;grid-template-columns:32px minmax(0,1fr) auto;align-items:center;min-height:50px;padding:0 12px;display:grid}.site-search-input-icon{border:1px solid var(--line-strong);width:22px;height:22px;color:var(--accent);border-radius:4px;place-items:center;font-size:12px;font-weight:700;display:grid}.site-search-input-wrap input{width:100%;min-width:0;color:var(--text);background:0 0;border:0;outline:0;font-size:15px}.site-search-input-wrap input::placeholder{color:#8b99a3}.site-search-input-wrap kbd{border:1px solid var(--line);background:var(--surface-muted);color:var(--muted);border-radius:4px;padding:3px 6px;font-family:inherit;font-size:11px}.site-search-content{gap:16px;max-height:470px;padding-right:4px;display:grid;overflow:auto}.site-search-group{gap:7px;display:grid}.site-search-group.is-hidden,.site-search-result.is-hidden,.site-search-empty.is-hidden{display:none}.site-search-group-title{color:var(--teal);font-size:11px;font-weight:700}.site-search-result-list{border-top:1px solid var(--line);display:grid}.site-search-result{border-bottom:1px solid var(--line);grid-template-columns:58px minmax(0,1fr) 18px;align-items:center;gap:12px;min-height:60px;padding:10px 4px;transition:background-color .16s,color .16s;display:grid}.site-search-result:hover{background:var(--accent-soft)}.site-search-result-type{color:var(--accent);font-size:11px;font-weight:700}.site-search-result-copy{gap:4px;min-width:0;display:grid}.site-search-result-copy strong,.site-search-result-copy small{text-overflow:ellipsis;white-space:nowrap;overflow:hidden}.site-search-result-copy strong{font-size:14px;font-weight:600}.site-search-result-copy small{color:var(--muted);font-size:12px}.site-search-result-arrow{color:var(--accent);font-size:17px}.site-search-empty{text-align:center;gap:5px;padding:32px 8px 16px;display:grid}.site-search-empty strong{font-size:15px}.site-search-empty span{color:var(--muted);font-size:13px}@media (width<=680px){.site-search-dialog{width:calc(100% - 16px);max-height:calc(100vh - 24px)}.site-search-panel{gap:14px;padding:18px}.site-search-head h2{font-size:21px}.site-search-content{max-height:calc(100vh - 230px)}.site-search-result{grid-template-columns:48px minmax(0,1fr) 16px}}.content-empty-state{border:1px dashed var(--line-strong);background:var(--surface);text-align:center;border-radius:12px;place-content:center;gap:8px;min-height:180px;padding:28px;display:grid}.content-empty-state strong{font-size:18px}.content-empty-state p{max-width:420px;color:var(--muted);margin:0;line-height:1.7}.article-outline-empty{color:var(--muted);margin:0;font-size:13px;line-height:1.6}.article-detail-cover>div{text-align:center;gap:8px;display:grid}.article-detail-cover>div>span{color:var(--muted);font-size:12px}.article-detail-cover>div>strong{font-size:18px}.markdown-body h2,.markdown-body h3{scroll-margin-top:calc(var(--topbar-offset) + 18px)}.markdown-body .is-outline-target{animation:1.1s ease-out outline-target-flash}@keyframes outline-target-flash{0%{background:var(--accent-soft)}to{background:0 0}}.topic-detail-head{border-bottom:1px solid var(--line-strong);gap:10px;padding:18px 0 24px;display:grid}.topic-detail-head h1{margin:0;font-size:38px;line-height:1.14}.topic-detail-head p{max-width:760px;color:var(--muted);margin:0;line-height:1.8}.topic-introduction{max-width:820px;margin:28px 0}.topic-stage{grid-template-columns:52px minmax(0,1fr)}.topic-stage-index{border:1px solid var(--line-strong);width:42px;height:42px;color:var(--muted);border-radius:50%;align-self:start;place-items:center;font-size:12px;display:grid}.topic-stage>div:last-child{border:1px solid var(--line);background:var(--surface);border-radius:12px;gap:10px;padding:16px 18px;display:grid}.topic-stage h2{margin:0;font-size:21px}.topic-stage p{color:var(--muted);margin:0;line-height:1.7}.topic-stage-links a{color:var(--accent)}.topic-path-outline a.is-active{background:var(--accent-soft);color:var(--accent);font-weight:650}.resource-detail-page{width:var(--hero-width);padding-top:calc(var(--topbar-offset) + var(--section-gap));margin:0 auto 56px}.resource-detail-page>.article-detail-breadcrumb{padding:0 2px 12px}.resource-detail-head{border-top:2px solid var(--accent);border-bottom:1px solid var(--line-strong);grid-template-columns:minmax(0,1fr) minmax(280px,.42fr);align-items:stretch;gap:28px;padding:22px 2px 24px;display:grid}.resource-detail-copy{align-content:center;gap:10px;min-width:0;display:grid}.resource-detail-copy h1,.resource-content-head h2{margin:0;line-height:1.12}.resource-detail-copy h1{font-size:clamp(30px,3vw,38px)}.resource-detail-copy p{max-width:740px;color:var(--muted);margin:0;font-size:15px;line-height:1.75}.resource-entry-panel{border:1px solid var(--line-strong);background:var(--surface);border-radius:8px;gap:12px;padding:16px;display:grid}.resource-entry-head{justify-content:space-between;align-items:baseline;gap:12px;display:flex}.resource-entry-head span{color:var(--teal);font-size:11px;font-weight:700}.resource-entry-head strong{font-size:12px}.resource-action-list{gap:8px;display:grid}.resource-action-link,.resource-back-link{background:var(--accent-soft);min-height:40px;color:var(--accent);border:1px solid #b8cdf7;border-radius:6px;justify-content:space-between;align-items:center;gap:12px;padding:0 12px;font-size:13px;font-weight:650;display:flex}.resource-action-link:hover,.resource-back-link:hover{border-color:var(--accent);background:#dce9ff}.resource-action-empty,.resource-content-empty{color:var(--muted);margin:0;font-size:13px;line-height:1.7}.resource-detail-workspace{gap:var(--section-gap);margin-top:var(--section-gap);grid-template-columns:minmax(0,1fr) 260px;align-items:start;display:grid}.resource-detail-content,.resource-side-panel{border:1px solid var(--line);background:var(--surface);border-radius:8px}.resource-detail-content{gap:20px;min-width:0;padding:22px;display:grid}.resource-content-head{border-bottom:1px solid var(--line);justify-content:space-between;align-items:end;gap:16px;padding-bottom:16px;display:flex}.resource-content-head h2{margin-top:5px;font-size:23px}.resource-content-head>span{color:var(--muted);font-size:12px}.resource-detail-side{top:calc(var(--topbar-offset) + var(--section-gap));gap:10px;display:grid;position:sticky}.resource-side-heading{border-bottom:1px solid var(--line);padding:13px 14px 11px;font-size:13px;font-weight:650}.resource-side-panel dl{gap:10px;margin:0;padding:13px 14px 15px;display:grid}.resource-side-panel dl div{justify-content:space-between;gap:12px;font-size:12px;display:flex}.resource-side-panel dt{color:var(--muted)}.resource-side-panel dd{text-align:right;margin:0;font-weight:600}.resource-back-link{border-color:var(--line);background:var(--surface);color:#51616c;min-height:38px;font-weight:550}@media (width<=1024px){.resource-detail-head,.resource-detail-workspace{grid-template-columns:1fr}.resource-detail-side{grid-template-columns:minmax(0,1fr) repeat(2,minmax(0,1fr));position:static}}@media (width<=760px){.article-detail-page{grid-template-columns:1fr;gap:16px}.article-detail-aside{position:static}.article-detail-head h1,.topic-detail-head h1{font-size:30px}.resource-detail-side{grid-template-columns:1fr}}.site-topbar{background:#fffffff5;border-bottom-color:#d5e0e5}.topbar-left a.is-current,.topbar-right a.is-current,.topbar-left a:hover,.topbar-right a:hover,.topbar-login-trigger:hover{color:#2563d9}.topbar-left a:after,.topbar-right a:after,.topbar-login-trigger:after{background:#2563d9}.article-page-head,.catalog-page-head,.topic-detail-header,.resource-detail-head,.about-head{border-color:#2563d9 #cbd9e0 #cbd9e0;box-shadow:0 14px 34px #14212b0f}.article-page-kicker,.section-kicker,.article-thumb-badge{color:#2563d9;letter-spacing:0}.article-search-shell{border-color:#c5d3da;border-radius:7px;box-shadow:0 5px 14px #14212b09}.article-search-shell .search-shell-action{background:#2563d9;border-radius:5px;align-items:center;min-height:34px;padding:0 14px;font-weight:700;display:inline-flex;color:#fff!important}.article-page-stats div{background:#f8fafb;border-color:#dce6eb;border-radius:7px}.article-sidebar,.article-toolbar,.article-card,.article-outline,.topic-path-outline,.topic-side-note,.resource-detail-content,.resource-side-panel{border-color:#d1dee4;border-radius:9px;box-shadow:0 8px 20px #14212b09}.article-sidebar-head{border-bottom-color:#e1e9ed}.article-filter-item{border-bottom-color:#e7edef}.article-filter-item.is-active,.article-outline-item.is-active{color:#2563d9;background:#edf4ff}.article-filter-item.is-active .article-filter-count{background:#2563d9}.article-filter-count{color:#304755;background:#edf2f5;border:1px solid #d2dfe6;font-weight:750}.article-filter-item.is-active .article-filter-count{color:#fff;border-color:#2563d9}.article-sort-tab,.article-pagination a{color:#526773;background:#f7fafb;border-color:#d5e1e6;border-radius:5px}.article-sort-tab.is-active,.article-pagination a.is-current{color:#2563d9;background:#edf4ff;border-color:#2563d9}.article-card:hover{border-color:#99b9e7;box-shadow:0 12px 26px #14212b14}.article-card-thumb,.article-detail-cover{background:#edf4ff;border-color:#c7d7e1;border-radius:8px;position:relative;overflow:hidden}.article-card-thumb{place-content:space-between;padding:14px;display:grid}.article-card-thumb:not(.has-cover){background:#edf4ff;grid-template-rows:auto 1fr;gap:12px}.article-thumb-copy{align-self:end;gap:6px;min-width:0;display:grid}.article-thumb-copy strong{color:#1d3544;-webkit-line-clamp:2;-webkit-box-orient:vertical;font-size:15px;font-weight:750;line-height:1.28;display:-webkit-box;overflow:hidden}.article-thumb-copy span{color:#5a7180;-webkit-line-clamp:3;-webkit-box-orient:vertical;font-size:12px;line-height:1.5;display:-webkit-box;overflow:hidden}.article-detail-cover{min-height:0;margin:20px 0 26px;display:block}.article-detail-cover img{object-fit:cover;width:100%;max-height:520px;display:block}.article-detail-cover>div{place-content:center;width:100%;height:100%;position:relative}.article-detail-cover>div>span{color:#526f9a;font-weight:700}.article-detail-cover>div>strong{color:#182934}.article-detail-cover b{color:#2563d9;opacity:.16;font-size:88px;font-weight:750;line-height:.8;position:absolute;bottom:14px;right:22px}.article-card-thumb.has-cover{background:#e7edf1;padding:0;display:block}.article-card-thumb.has-cover img{object-fit:cover;width:100%;height:100%;display:block}.article-detail-footnav{border-top:1px solid #d6e1e6;margin-top:34px;padding:18px 0 0}.article-detail-nav-action{color:#27527b;background:0 0;border:0;border-radius:0;justify-content:space-between;align-items:center;gap:16px;min-height:42px;padding:0 8px;font-weight:700;text-decoration:none;display:flex}.article-detail-nav-action+.article-detail-nav-action{border-left:1px solid #dce5e9}.article-detail-nav-action:hover{color:#174da9;background:#f3f7fa}.article-detail-nav-action b{color:#2563d9;font-size:19px;line-height:1}.article-tag-list li{color:#526773;background:#f1f5f7;border-radius:4px}.markdown-body blockquote{background:#f0f6ff;border-left-color:#2563d9;border-radius:0 7px 7px 0}.article-outline{max-height:calc(100vh - var(--topbar-offset) - 34px);grid-template-rows:auto minmax(0,1fr);overflow:hidden}.article-outline-head{gap:4px;display:grid}.article-outline-list{overscroll-behavior:contain;scrollbar-width:none;-ms-overflow-style:none;min-height:0;max-height:min(62vh,620px);padding:1px 2px 4px;overflow-y:auto}.article-outline-list::-webkit-scrollbar{width:0;height:0;display:none}.article-outline-node{grid-template-columns:18px minmax(0,1fr);align-items:center;min-width:0;display:grid}.article-outline-node[hidden]{display:none!important}.article-outline-node.depth-2{padding-left:10px}.article-outline-node.depth-3{padding-left:30px}.article-outline-tree-toggle,.article-outline-tree-spacer{place-items:center;width:18px;height:28px;display:grid}.article-outline-tree-toggle{color:#52707f;cursor:pointer;background:0 0;border:0;border-radius:4px;padding:0}.article-outline-tree-toggle:before{content:"";border-bottom:1.5px solid;border-right:1.5px solid;width:6px;height:6px;transition:transform .16s;transform:rotate(45deg)translate(-1px,-1px)}.article-outline-tree-toggle:hover{color:#2563d9;background:#edf4ff}.article-outline-node.is-collapsed .article-outline-tree-toggle:before{transform:rotate(-45deg)translate(1px,1px)}.article-outline-item{color:#526773;border-radius:6px;min-width:0;padding:6px 8px;font-size:13px;line-height:1.45}.article-outline-node.depth-1{margin-top:4px}.article-outline-node.depth-1 .article-outline-item{color:#263946;border-bottom:1px solid #e1e9ed;border-radius:0;padding-top:8px;padding-bottom:8px;font-weight:750}.article-outline-node.depth-3 .article-outline-item{font-size:12px}.article-outline-node:has(.article-outline-item.is-active) .article-outline-tree-toggle{color:#2563d9}.markdown-body h1{border-bottom:1px solid #dce5e9;margin:.7em 0 .48em;padding-bottom:.4em;font-size:30px;line-height:1.22}.markdown-body h2{border-left:3px solid #2563d9;padding-left:12px}.markdown-body h3{color:#254e69}.markdown-body p,.markdown-body li{color:#40525d}.markdown-body img{object-fit:contain;background:#f7fafb;border:1px solid #d8e2e7;border-radius:7px;width:auto;max-width:min(100%,720px);max-height:640px;margin:24px auto;display:block}.markdown-body img[data-size=small]{max-width:min(100%,360px);max-height:420px}.markdown-body img[data-size=medium]{max-width:min(100%,520px);max-height:560px}.markdown-body img[data-size=normal]{max-width:min(100%,720px);max-height:640px}.markdown-body img[data-size=wide]{max-width:100%;max-height:680px}.markdown-body img[data-size=full]{width:100%;max-width:100%;max-height:none}.markdown-body img[data-align=left]{margin-left:0;margin-right:auto}.markdown-body img[data-align=center]{margin-left:auto;margin-right:auto}.markdown-body img[data-align=right]{margin-left:auto;margin-right:0}.markdown-body pre{background:#172732;border:1px solid #213543;border-radius:8px;padding:18px 20px;position:relative;box-shadow:inset 0 1px #ffffff0a}.markdown-body pre code{color:#e7eff2;font-size:13px;line-height:1.7}.markdown-body code:not(pre code){color:#9a315b;background:#f2f6f8;border:1px solid #dce5e9;border-radius:4px}.markdown-body .hljs-keyword,.markdown-body .hljs-selector-tag,.markdown-body .hljs-literal{color:#ff9f7f}.markdown-body .hljs-title,.markdown-body .hljs-title.function_,.markdown-body .hljs-function .hljs-title{color:#8ed4ff}.markdown-body .hljs-string,.markdown-body .hljs-attr,.markdown-body .hljs-template-variable{color:#9cd990}.markdown-body .hljs-number,.markdown-body .hljs-params,.markdown-body .hljs-built_in{color:#f4c878}.markdown-body .hljs-comment,.markdown-body .hljs-quote{color:#88a0aa;font-style:italic}.markdown-body .markdown-alert{background:#f5f9fc;border:1px solid #d4e1e7;border-left:4px solid #2563d9;border-radius:7px;margin:20px 0;padding:14px 16px}.markdown-body .markdown-alert>:last-child{margin-bottom:0}.markdown-body .markdown-alert-title{color:#1d4f85;align-items:center;gap:7px;margin:0 0 7px;font-size:13px;font-weight:750;display:flex}.markdown-body .markdown-alert-title svg{fill:currentColor;width:16px;height:16px}.markdown-body .markdown-alert-tip{background:#f1faf7;border-left-color:#0f766e}.markdown-body .markdown-alert-tip .markdown-alert-title{color:#0d665f}.markdown-body .markdown-alert-warning,.markdown-body .markdown-alert-caution{background:#fff8ed;border-left-color:#b96716}.markdown-body .markdown-alert-warning .markdown-alert-title,.markdown-body .markdown-alert-caution .markdown-alert-title{color:#96520f}.markdown-body table{border:1px solid #d8e2e7;border-radius:7px}.markdown-body th{color:#254252;background:#edf4f7;font-weight:750}.markdown-body tr:nth-child(2n) td{background:#fafcfd}@media (width<=760px){.article-detail-nav-action+.article-detail-nav-action{border-top:1px solid #dce5e9;border-left:0}}.topic-index-toolbar{border-bottom-color:#d9e3e7}.topic-filter{color:#526773;border-color:#d5e1e6;border-radius:5px}.topic-filter.is-active{color:#fff;background:#2563d9;border-color:#2563d9}.topic-catalog{gap:12px}.topic-catalog-item{background:#fff;border:1px solid #d3dfe5;border-radius:8px;min-height:148px;margin:0;padding:18px 18px 18px 22px;box-shadow:0 5px 14px #14212b06}.topic-catalog-item:before{background:#2563d9;border-radius:3px;left:-1px}.topic-catalog-item:hover{background:#fbfdff;border-color:#9ebce5;box-shadow:0 10px 22px #14212b0f}.topic-catalog-steps li{border-left-color:#dce5e9}.topic-detail-header{background:#fff;border-radius:9px;grid-template-columns:minmax(0,1fr) minmax(340px,.7fr);gap:32px;padding:24px 28px 22px}.topic-detail-labels span:first-child,.topic-detail-facts dd{color:#2563d9}.topic-detail-facts{min-width:0}.topic-detail-facts div{min-width:0;padding-inline:12px}.topic-detail-facts dd{overflow-wrap:anywhere;min-width:0}.topic-stage-marker{color:#2563d9;background:#edf4ff;border-color:#b8cfee}.topic-stage-body{border-color:#d1dee4;border-radius:8px;box-shadow:0 6px 16px #14212b08}.topic-stage-complete,.topic-path-finish{background:#f6fafb;border-color:#c9dce6;border-radius:8px}.topic-material-link:hover{background:#fbfdff;border-color:#9fbce6}.topic-path-outline a.is-active{color:#2563d9;background:#edf4ff}.featured-card{border-color:#d3dfe5;border-radius:8px;box-shadow:0 6px 16px #14212b08}.featured-card:hover{border-color:#96b6e7;box-shadow:0 12px 24px #14212b14}.featured-logo{background:#fff;border:1px solid #e0e8ec;border-radius:8px;place-items:center;width:44px;height:44px;display:grid}.featured-category{color:#647783;letter-spacing:0}.featured-card h3{color:#182934}.featured-actions{border-top:1px solid #e6ecef;padding-top:9px}.featured-actions a{color:#2563d9;background:0 0;border-radius:0;font-weight:650}.product-directory .preview-section{gap:8px}.product-directory .preview-section-head{align-items:center;min-height:0;padding-bottom:6px}.product-directory .resource-title-group{align-items:baseline;gap:8px;display:flex}.product-directory .resource-title-group h2{order:1;font-size:17px;font-weight:650;line-height:1.25}.product-directory .resource-title-group .section-kicker{color:#728590;white-space:nowrap;background:0 0;border:0;border-left:1px solid #ccd8de;border-radius:0;order:2;padding:0 0 0 8px;font-size:10px;font-weight:650;line-height:1;display:inline}.product-directory .featured-variant{gap:0}.product-directory .featured-card{gap:8px;min-height:132px;padding:13px 14px}.product-directory .featured-card-head{align-items:center;gap:10px;min-height:0}.product-directory .featured-card h3{font-size:16px;line-height:1.2}.product-directory .featured-copy p{margin-top:4px;font-size:12px;line-height:1.45}.product-directory .featured-actions{border-top:1px solid #e6ecef;grid-auto-columns:minmax(0,1fr);grid-auto-flow:column;gap:8px;padding-top:9px;display:grid}.product-directory .featured-actions a{color:#2563d9;white-space:nowrap;background:#f7fafc;border:1px solid #c9d9e2;border-radius:5px;justify-content:center;min-width:0;min-height:28px;padding:0 8px;font-size:12px;font-weight:650}.product-directory .featured-actions a:hover{background:#edf4ff;border-color:#2563d9}.product-directory .featured-grid-4 .featured-card-head{gap:12px}.product-directory .featured-grid-4 .featured-logo{width:52px;height:52px}.product-directory .featured-grid-5 .featured-card{min-height:120px;padding:12px}.product-directory .featured-grid-5 .featured-logo{width:44px;height:44px}.product-directory .featured-grid-5 .featured-card h3{font-size:15px}.product-directory .featured-grid-6{align-items:start}.product-directory .featured-grid-6 .featured-card{grid-template-rows:1fr;align-self:start;min-height:0;padding:10px}.product-directory .featured-grid-6 .featured-logo{width:34px;height:34px}.product-directory .featured-grid-6 .featured-card h3{font-size:14px}.product-directory .featured-grid-6 .featured-copy p{-webkit-line-clamp:2}.product-directory .featured-card.has-no-actions{grid-template-rows:1fr}.resource-detail-head{background:#fff;border:1px solid #cbd9e0;border-top:3px solid #2563d9;border-radius:9px;padding:24px}.resource-detail-copy{padding-left:64px;position:relative}.resource-detail-brand{background:#fff;border:1px solid #dfe8ec;border-radius:8px;place-items:center;width:46px;height:46px;display:grid;position:absolute;top:0;left:0}.resource-entry-panel{background:#f8fbfc;border-color:#cbd9e0;border-radius:8px}.resource-entry-head span,.resource-action-link{color:#2563d9}.resource-action-link{background:#edf4ff;border-color:#b8ceec;border-radius:5px}.resource-action-link:hover{background:#e4efff;border-color:#2563d9}.resource-back-link{background:#fff;border-color:#d3dfe5;border-radius:6px}.resource-back-link:hover{color:#2563d9;background:#fbfdff;border-color:#9cb9e5}.about-markdown-content{background:#fff;border:1px solid #cbd9e0;border-top:3px solid #2563d9;border-radius:9px;min-width:0;padding:38px 46px 50px;box-shadow:0 10px 26px #14212b0b}.about-markdown-content>h1:first-child{margin-top:0}.about-markdown-content>h1:first-child:after{content:"";background:#2563d9;width:48px;height:3px;margin-top:16px;display:block}.about-markdown-content>h2{margin-top:2em}@media (width<=760px){.about-markdown-content{padding:26px 22px 32px}}.site-search-dialog,.auth-dialog{border-color:#c5d3da;border-radius:9px;box-shadow:0 26px 72px #14212b38}.site-search-close,.auth-dialog-close{border-radius:5px}.site-search-input-wrap{border-color:#c5d3da;border-radius:6px}.site-search-input-wrap:focus-within{border-color:#2563d9;box-shadow:0 0 0 3px #e5efff}.auth-submit{background:#2563d9;border-color:#2563d9}.auth-mode-tab.is-active{color:#2563d9}@media (width<=680px){.resource-detail-head{padding:18px}.resource-detail-copy{padding-top:56px;padding-left:0}.resource-detail-brand{top:0;left:0}}@media (width<=1024px){.topic-detail-header{grid-template-columns:1fr;gap:20px}.topic-detail-facts{max-width:520px}}@media (width<=760px){.topic-catalog-item{grid-template-columns:50px minmax(0,1fr) 22px;gap:14px;min-height:0;padding:18px 16px 18px 18px}.topic-catalog-index{padding-left:8px;font-size:22px}.topic-catalog-steps,.topic-catalog-meta{grid-column:2/-1}.topic-detail-header{padding:20px 18px}.topic-detail-facts{grid-template-columns:repeat(2,minmax(0,1fr));max-width:none}.topic-detail-facts div{padding-inline:10px}}:root{--bg:#f5f7f7;--surface:#fff;--surface-muted:#eef3f2;--line:#d7e0de;--line-strong:#b9c9c5;--text:#1c2a28;--muted:#667572;--accent:#176d68;--accent-soft:#e2f1ed;--teal:#176d68;--teal-soft:#e2f1ed;--topbar-offset:58px;--radius:6px}body{color:var(--text);background:var(--bg);font-family:Inter,Segoe UI,PingFang SC,Microsoft YaHei,sans-serif}a,button{transition:color .16s,background-color .16s,border-color .16s,box-shadow .16s,transform .16s}.site-topbar{box-shadow:none;background:#f5f7f7f0;border-bottom-color:#b9c9c5d1}.topbar-shell{min-height:58px;font-size:14px}.topbar-left a,.topbar-right a,.topbar-login-trigger{color:#5d6d69;min-height:36px}.topbar-left a:after,.topbar-right a:after,.topbar-login-trigger:after{background:#ba6742;height:1px}.topbar-left a.is-current,.topbar-right a.is-current{color:var(--text);font-weight:700}.topbar-left a:hover,.topbar-right a:hover,.topbar-login-trigger:hover{color:var(--accent);transform:translateY(-1px)}.topbar-login-trigger{border:1px solid var(--line-strong);background:var(--surface);color:var(--text);border-radius:4px;padding:0 10px}.topbar-login-trigger:hover{border-color:var(--accent);background:var(--accent-soft)}.product-directory .masthead{border-color:var(--line-strong);border-top:2px solid var(--accent);box-shadow:none;background:0 0;border-radius:0}.product-directory .masthead-copy{border-right-color:var(--line)}.product-directory .masthead-kicker,.product-directory .section-kicker,.product-directory .article-page-kicker,.product-directory .digest-label,.product-directory .directory-rail-head span{color:#b45e3a;letter-spacing:.06em;font-size:10px;font-weight:750}.product-directory .masthead-copy h1{width:100%;min-width:0;color:var(--text);letter-spacing:0;white-space:nowrap;text-overflow:ellipsis;font-size:clamp(22px,2.35vw,30px);font-weight:760;line-height:1.15;overflow:hidden}.product-directory .masthead-stats{gap:0}.product-directory .masthead-stats div{border:0;border-left:1px solid var(--line-strong);background:0 0;border-radius:0;padding:8px 11px}.product-directory .masthead-stats div:first-child{border-left:0}.product-directory .masthead-stats strong{color:var(--accent)}.product-directory .masthead-core{gap:14px}.product-directory .masthead-track{gap:4px}.product-directory .track-chip{min-height:30px;color:var(--muted);background:0 0;border:0;border-radius:3px;padding:0 10px;font-size:12px;font-weight:650}.product-directory .track-chip:hover{background:var(--surface-muted);color:var(--accent)}.product-directory .track-chip.is-active{background:var(--accent);color:#fff}.product-directory .search-shell{border-color:var(--line-strong);background:var(--surface);border-radius:5px;box-shadow:0 8px 22px #19312c0d}.product-directory .search-shell:hover{border-color:#8cada4;box-shadow:0 10px 26px #19312c14}.product-directory .search-shell-action{background:var(--accent);border-radius:3px}.product-directory .search-tags{font-size:11px}.product-directory .search-tags button{color:#52625e;text-underline-offset:3px;text-decoration:underline #d9a08a}.product-directory .search-tags button:hover{color:var(--accent)}.product-directory .masthead-digest{border-left-color:var(--line-strong)}.product-directory .digest-meta{border-bottom-color:var(--line)}.product-directory .digest-meta a{color:var(--accent);font-weight:700}.product-directory .digest-list li{border-bottom-color:var(--line)}.product-directory .digest-list li a:hover{color:var(--accent)}.product-directory .workspace-shell{gap:28px}.product-directory .category-rail{border-color:var(--line-strong);background:#ffffffd1;border-radius:6px;gap:3px;padding:12px 10px;box-shadow:0 10px 24px #19312c0a}.product-directory .directory-rail-head{border-bottom-color:var(--line);padding:5px 8px 13px}.product-directory .directory-rail-head strong{color:var(--text);font-size:15px}.product-directory .rail-item{color:#5a6965;border-radius:4px;min-height:40px;font-size:13px;position:relative}.product-directory .rail-marker{background:#9daea9;border:0;border-radius:50%;width:6px;height:6px}.product-directory .rail-item:hover{background:var(--surface-muted);color:var(--accent)}.product-directory .rail-item.is-active{background:var(--accent-soft);color:var(--accent);font-weight:700}.product-directory .rail-item.is-active:before{content:"";background:#ba6742;width:2px;height:20px;position:absolute;left:0}.product-directory .rail-item.is-active .rail-marker{background:#ba6742}.product-directory .workspace-main{gap:0}.product-directory .preview-section{border-bottom:1px solid var(--line-strong);gap:16px;padding:27px 0}.product-directory .preview-section:first-child{padding-top:0}.product-directory .preview-section-head{border-bottom:0;min-height:0;padding-bottom:0}.product-directory .resource-title-group{align-items:baseline;gap:8px}.product-directory .resource-title-group h2{color:var(--text);letter-spacing:0;font-size:20px;font-weight:720}.product-directory .resource-title-group .section-kicker{border-left:1px solid var(--line-strong);color:#798985;padding-left:8px;font-size:10px}.product-directory .market-card,.product-directory .featured-card,.product-directory .route-card,.product-directory .nav-card,.product-directory .official-link{border-color:var(--line);background:var(--surface);box-shadow:none;border-radius:6px}.product-directory .market-card{min-height:104px;padding:15px}.product-directory .market-card:before{background:#ba6742;width:3px;height:24px}.product-directory .market-card:nth-child(2n):before{background:var(--accent)}.product-directory .market-card:hover,.product-directory .featured-card:hover,.product-directory .route-card:hover,.product-directory .nav-card:hover,.product-directory .official-link:hover{background:#fcfefd;border-color:#9ebdb4;transform:translateY(-2px);box-shadow:0 12px 26px #19312c14}.product-directory .market-card strong,.product-directory .featured-card h3,.product-directory .nav-card strong{color:var(--text)}.product-directory .market-card time{color:var(--accent);font-weight:650}.product-directory .featured-card{min-height:138px;padding:14px}.product-directory .featured-grid-4 .featured-card{min-height:150px}.product-directory .featured-grid-5 .featured-card{min-height:130px}.product-directory .featured-grid-6 .featured-card{min-height:100px}.product-directory .featured-logo{border-color:var(--line);background:#f2f6f4;border-radius:5px}.product-directory .featured-logo img{padding:7px}.product-directory .featured-card h3{font-weight:700}.product-directory .featured-copy p{color:var(--muted)}.product-directory .featured-actions{border-top-color:var(--line)}.product-directory .featured-actions a{color:var(--accent);background:#f5f8f7;border:1px solid #c8d8d4;border-radius:4px;font-weight:650}.product-directory .featured-actions a:hover{border-color:var(--accent);background:var(--accent-soft);box-shadow:none;transform:none}.product-directory .featured-actions a:active{transform:translateY(1px)}.product-directory .promo-banner{box-shadow:none;border-radius:6px}.product-directory .promo-banner-primary{background:#1b5e5b}.product-directory .promo-banner-secondary{background:#a85d40}.product-directory .resource-panel{border-color:var(--line-strong);box-shadow:none;background:#ffffffb3;border-radius:6px}.product-directory .resource-tab{border-color:var(--line);background:var(--surface);color:var(--muted);border-radius:4px}.product-directory .resource-tab.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.product-directory .official-link{min-height:44px}.product-directory .official-dot{background:#ba6742}.product-directory .route-card{border-radius:6px}.product-directory .nav-card-icon{background:var(--accent-soft);border-radius:5px}.article-page-head,.topic-detail-header,.resource-detail-head,.about-head{border-color:var(--line-strong);border-top:2px solid var(--accent);box-shadow:none;background:0 0;border-radius:0}.article-page-copy h1,.topic-detail-heading h1,.resource-detail-copy h1,.about-head h1{color:var(--text);letter-spacing:0}.article-page-kicker,.article-thumb-badge{color:#b45e3a;letter-spacing:.06em}.article-page-stats div{border-color:var(--line);background:#ffffff7a;border-radius:5px}.article-page-stats strong{color:var(--accent)}.article-search-shell{border-color:var(--line-strong);background:var(--surface);border-radius:5px}.article-search-shell .search-shell-action{background:var(--accent);border-radius:3px}.article-sidebar,.article-toolbar,.article-card,.article-outline,.topic-path-outline,.topic-side-note,.resource-detail-content,.resource-side-panel{border-color:var(--line);box-shadow:none;border-radius:6px}.article-sidebar{border-top:2px solid var(--accent)}.article-filter-item{border-radius:4px}.article-filter-item.is-active,.article-outline-item.is-active{background:var(--accent-soft);color:var(--accent)}.article-filter-count{color:#40544f;background:#edf3f1;border-radius:4px}.article-filter-item.is-active .article-filter-count{background:var(--accent);color:#fff}.article-toolbar{border-top:2px solid var(--accent)}.article-sort-tab,.article-pagination a,.topic-filter{border-color:var(--line);background:var(--surface);color:var(--muted);border-radius:4px}.article-sort-tab.is-active,.article-pagination a.is-current,.topic-filter.is-active{border-color:var(--accent);background:var(--accent-soft);color:var(--accent)}.article-card:hover{border-color:#9ebdb4;transform:translateY(-2px);box-shadow:0 12px 26px #19312c12}.article-card-thumb,.article-detail-cover{border-color:var(--line);background:#eaf1ef;border-radius:5px}.article-detail-nav-action{color:var(--accent)}.article-detail-nav-action:hover{background:var(--accent-soft);color:#a65335}.article-detail-nav-action b{color:#b45e3a}.markdown-body{color:#334541}.markdown-body h1,.markdown-body h2,.markdown-body h3,.markdown-body h4{color:var(--text);letter-spacing:0}.markdown-body h2{border-left-color:#ba6742}.markdown-body a{color:var(--accent)}.markdown-body blockquote{background:#fff7f2;border-left-color:#ba6742}.markdown-body code:not(pre code){color:#a65335;background:#eff5f3;border-color:#d8e2df}.markdown-body .markdown-alert{border-left-color:var(--accent);background:#f3f9f7}.topic-catalog-item{border-color:var(--line)}.topic-catalog-item:before{background:#ba6742}.topic-catalog-item:hover{background:#ffffffb3;border-color:#9ebdb4}.topic-catalog-label,.topic-catalog-arrow{color:var(--accent)}.topic-stage-marker{background:var(--accent-soft);color:var(--accent);border-color:#b8d0c8}.topic-stage-body{border-color:var(--line);box-shadow:none;border-radius:6px}.topic-path-outline a.is-active{background:var(--accent-soft);color:var(--accent)}.resource-detail-head{border-top-color:var(--accent)}.resource-entry-panel{border-color:var(--line-strong);background:#f4f8f7;border-radius:5px}.resource-action-link{background:var(--accent-soft);color:var(--accent);border-color:#b8d0c8;border-radius:4px}.about-markdown-content{border-color:var(--line-strong);border-top:2px solid var(--accent);box-shadow:none;border-radius:0}.home-footer{border-top-color:var(--line-strong);color:var(--muted)}.home-footer-title{color:var(--text)}.home-footer-title span{background:var(--accent);border-radius:4px}.home-footer-links a:hover,.home-footer-records a:hover{color:var(--accent)}@media (width<=760px){.site-topbar .topbar-shell{flex-direction:row!important;align-items:center!important;gap:8px!important;min-height:54px!important;padding:0!important}.site-topbar .topbar-left,.site-topbar .topbar-right{white-space:nowrap!important;flex-wrap:nowrap!important;gap:10px!important;width:auto!important}.topbar-left a,.topbar-right a,.topbar-login-trigger{min-height:34px;font-size:12px}.topbar-login-trigger{padding:0 7px}.product-directory .workspace-shell{gap:18px}.product-directory .category-rail{box-shadow:none}.product-directory .preview-section{padding:22px 0}.product-directory .market-card:hover,.product-directory .featured-card:hover,.product-directory .route-card:hover,.product-directory .nav-card:hover,.product-directory .official-link:hover,.article-card:hover{box-shadow:none;transform:none}}@media (prefers-reduced-motion:reduce){*,:before,:after{scroll-behavior:auto!important;transition-duration:.01ms!important}}