:root{--ink:#27272a;--muted:#64646c;--paper:#fcfcfc;--surface:#fff;--line:#e7e7eb;--nav-space:16px}.nav-shell{--ink:#27272a;--muted:#64646c;--paper:#fcfcfc;--surface:#fff;--line:#e7e7eb;--brand:#b9471c;--brand-strong:#b9471c;--nav-orange:#f26b38;--nav-selected:#fff2eb;--nav-radius:6px;--nav-control:40px;--nav-sidebar-width:240px;--nav-header-height:64px;--nav-space:16px;min-height:100dvh;padding:var(--nav-header-height) 0 0 var(--nav-sidebar-width);background:var(--paper);color:var(--ink);letter-spacing:0;font-family:Microsoft YaHei,Segoe UI,sans-serif}.nav-shell :focus-visible{outline-color:var(--brand)}.nav-header{z-index:20;height:var(--nav-header-height);background:var(--surface);border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;padding:0 24px;display:flex;position:fixed;inset:0 0 auto}.nav-header-brand{align-items:center;gap:12px;min-width:0;display:flex}.nav-shell .wordmark{color:var(--nav-orange)}.nav-header .site-brand{max-width:360px}.nav-session{min-width:0;color:var(--muted);align-items:center;gap:12px;font-size:13px;display:flex}.nav-session>span{text-overflow:ellipsis;white-space:nowrap;max-width:180px;overflow:hidden}.nav-session a{white-space:nowrap;align-items:center;gap:8px;min-height:44px;text-decoration:none;display:flex}.nav-header-top-link{color:var(--muted);border-radius:6px;align-items:center;gap:6px;padding:0 10px;font-size:13px;text-decoration:none;transition:background .15s,color .15s;display:flex}.nav-header-top-link:hover{color:var(--brand);background:var(--nav-selected)}.nav-header-top-link[aria-current=page]{color:var(--brand);background:var(--nav-selected);font-weight:600}.nav-menu-toggle{display:none}.nav-shell .nav-icon-button{color:var(--muted);background:0 0;border:0}.nav-shell .nav-icon-button:hover{color:var(--brand);background:var(--nav-selected)}.nav-search{z-index:21;border:1px solid var(--line);background:var(--surface);width:208px;color:var(--muted);border-radius:6px;align-items:center;gap:6px;padding-left:12px;transition:border-color .15s,box-shadow .15s;display:flex;position:fixed;top:88px;left:16px}.nav-search:focus-within{border-color:var(--brand);box-shadow:0 0 0 2px color-mix(in srgb, var(--brand) 15%, transparent);color:var(--brand)}.nav-search>svg{flex:0 0 17px}.nav-search input{width:100%;min-width:0;height:40px;color:var(--ink);background:0 0;border:0;outline:none;flex:1;padding:0;font-size:13px}.nav-search input::-webkit-search-cancel-button{display:none}.nav-search .nav-icon-button{--nav-control:28px;height:40px}.nav-sidebar{inset:var(--nav-header-height) auto 0 0;width:var(--nav-sidebar-width);border-right:1px solid var(--line);background:var(--surface);flex-direction:column;padding-top:84px;display:flex;position:fixed}.nav-sidebar-scroll{flex:1;min-height:0;padding:0 12px 16px;overflow-y:auto}.nav-categories{gap:6px;display:grid}.nav-categories a{min-height:40px;color:var(--muted);overflow-wrap:anywhere;border-radius:6px;align-items:center;gap:12px;padding:9px 14px;font-size:14px;text-decoration:none;display:flex;position:relative}.nav-categories svg{flex:0 0 18px}.nav-categories a:hover,.nav-sidebar-tags a:hover{background:var(--nav-selected);color:var(--brand)}.nav-categories a[aria-current]{color:var(--brand);background:var(--nav-selected);font-weight:650}.nav-categories a[aria-current]:before{content:"";background:var(--nav-orange);width:3px;position:absolute;top:10px;bottom:10px;left:0}.nav-sidebar-tags{border-top:1px solid var(--line);margin:24px 8px 0;padding-top:18px}.nav-sidebar-tags h2{color:var(--muted);margin:0 0 12px;font-size:12px;font-weight:400}.nav-sidebar-tags nav{flex-wrap:wrap;gap:8px;display:flex}.nav-sidebar-tags a{border:1px solid var(--line);max-width:100%;min-height:26px;color:var(--muted);overflow-wrap:anywhere;border-radius:999px;align-items:center;padding:3px 10px;font-size:12px;text-decoration:none;transition:background .12s,color .12s,border-color .12s;display:inline-flex}.nav-sidebar-tags a[aria-current]{color:var(--brand);background:var(--nav-selected);border-color:var(--brand);font-weight:550}.nav-copyright{padding:24px 16px max(24px, env(safe-area-inset-bottom));color:var(--muted);text-align:center;overflow-wrap:anywhere;flex-shrink:0;font-size:12px;line-height:1.6}.nav-results{width:100%;min-width:0;max-width:1544px;margin:0 auto;padding:32px}.nav-visually-hidden{clip-path:inset(50%);white-space:nowrap;width:1px;height:1px;position:absolute;overflow:hidden}.nav-group{margin:0 0 40px}.nav-group>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;padding-bottom:14px;display:flex}.nav-group>header>div{align-items:baseline;gap:14px;min-width:0;display:flex}.nav-group h2{overflow-wrap:anywhere;margin:0;font-size:16px;font-weight:650}.nav-group header span{color:var(--muted);font-size:12px}.nav-group header a{min-height:28px;color:var(--brand);flex-shrink:0;align-items:center;gap:8px;font-size:12px;text-decoration:none;display:flex}.nav-grid{gap:var(--nav-space);grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.nav-site{isolation:isolate;border:1px solid var(--line);background:var(--surface);border-radius:8px;min-width:0;min-height:144px;padding:16px;transition:border-color .15s,box-shadow .15s;position:relative;box-shadow:0 2px 8px #0000000a}.nav-site:hover{border-color:#d5d5db;box-shadow:0 3px 10px #00000012}.nav-site-body{z-index:1;border-radius:inherit;cursor:pointer;background:0 0;border:0;position:absolute;inset:0}.nav-site-top{pointer-events:none;align-items:center;gap:12px;min-width:0;padding-right:24px;display:flex}.nav-site-icon{width:44px;height:44px;color:var(--muted);background:#f4f5f6;border-radius:6px;flex:0 0 44px;place-items:center;display:grid;overflow:hidden}.nav-site-icon img{object-fit:contain;width:100%;height:100%}.nav-site-name{min-width:0}.nav-site-name h3{text-overflow:ellipsis;white-space:nowrap;margin:0 0 4px;font-size:14px;font-weight:650;line-height:1.5;overflow:hidden}.nav-site-name span{text-overflow:ellipsis;white-space:nowrap;color:var(--muted);font-size:12px;display:block;overflow:hidden}.nav-site-external{z-index:2;width:40px;height:40px;color:var(--muted);border-radius:6px;place-items:center;display:grid;position:absolute;top:6px;right:4px}.nav-site-external:hover{color:var(--brand);background:var(--nav-selected)}.nav-site>p{-webkit-line-clamp:2;overflow-wrap:anywhere;min-height:42px;color:var(--muted);pointer-events:none;-webkit-box-orient:vertical;margin:20px 0 0;font-size:13px;line-height:21px;display:-webkit-box;overflow:hidden}.nav-list-heading{overflow-wrap:anywhere;outline:none;margin:0 0 20px;font-size:24px;line-height:1.4}.nav-results-bar{border-bottom:1px solid var(--line);color:var(--muted);flex-wrap:nowrap;justify-content:space-between;align-items:center;gap:16px;min-width:0;margin-bottom:20px;padding-bottom:16px;font-size:13px;display:flex}.nav-results-bar-title{color:var(--ink);overflow-wrap:anywhere;flex-shrink:1;min-width:0;font-size:18px;font-weight:650;line-height:1.4}.nav-results-bar-right{flex-wrap:wrap;justify-content:flex-end;align-items:center;gap:16px;min-width:0;display:flex}.nav-results-bar-count{white-space:nowrap}.nav-results-bar-info{flex-wrap:wrap;align-items:center;gap:16px;min-width:0;display:flex}.nav-results-bar a{color:var(--brand);text-decoration:none}.nav-search-term{overflow-wrap:anywhere;max-width:100%;font-style:italic}.nav-results-bar label{align-items:center;gap:8px;min-width:0;display:flex}.nav-select-wrap{align-items:center;display:inline-flex;position:relative}.nav-select-wrap:after{content:"";pointer-events:none;border-left:4px solid #0000;border-right:4px solid #0000;border-top:5px solid var(--muted);width:0;height:0;transition:border-top-color .15s;position:absolute;top:50%;right:10px;translate:0 -50%}.nav-select-wrap:focus-within:after{border-top-color:var(--brand)}.nav-results-bar select{appearance:none;border:1px solid var(--line);max-width:180px;height:36px;color:var(--ink);background:var(--surface);font:inherit;cursor:pointer;border-radius:6px;outline:none;padding:0 30px 0 12px;font-size:13px;transition:border-color .15s,box-shadow .15s}.nav-results-bar select:hover{border-color:#c5c5cc}.nav-results-bar select:focus{border-color:var(--brand);box-shadow:0 0 0 2px color-mix(in srgb, var(--brand) 15%, transparent)}.nav-empty{color:var(--muted);text-align:center;overflow-wrap:anywhere;padding:56px 16px}.nav-empty>a{color:var(--brand);margin-top:20px;display:block}.nav-pagination{color:var(--muted);justify-content:center;align-items:center;gap:24px;padding:24px 0;font-size:13px;display:flex}.nav-pagination>span{text-align:center;min-width:70px}.nav-grid-skeleton>div{border:1px solid var(--line);background:var(--surface);border-radius:8px;min-height:144px;padding:20px}.nav-grid-skeleton span,.nav-account-skeleton span{background:#ededf0;border-radius:4px;height:14px;margin-bottom:18px;display:block}.nav-grid-skeleton span:first-child,.nav-account-skeleton span:first-child{width:45%}.nav-account-skeleton{padding:24px 0}.nav-dialog{border:1px solid var(--line);background:var(--surface);width:min(720px,100% - 48px);max-height:calc(100dvh - 48px);color:var(--ink);border-radius:8px;padding:0;overflow-y:auto}.nav-dialog::backdrop,.nav-drawer::backdrop{background:#1f20274d}.nav-dialog-close{z-index:3;background:var(--surface);justify-content:flex-end;height:40px;padding:4px 8px 0;display:flex;position:sticky;top:0}.nav-dialog-content{padding:0 32px 28px}.nav-detail-header{align-items:flex-start;gap:20px;display:flex}.nav-detail-header .nav-site-icon{flex-basis:64px;width:64px;height:64px}.nav-detail-name{flex:1;min-width:0}.nav-dialog h2{overflow-wrap:anywhere;margin:0 0 8px;font-size:22px;line-height:1.4}.nav-detail-url{min-width:0;color:var(--muted);align-items:center;gap:8px;font-size:13px;display:flex}.nav-detail-url>span{text-overflow:ellipsis;white-space:nowrap;flex:1;overflow:hidden}.nav-detail-url a{height:40px;color:var(--brand);border-radius:6px;flex:0 0 40px;place-items:center;display:grid}.nav-detail-url a:hover{background:var(--nav-selected)}.nav-description{color:var(--muted);white-space:pre-wrap;overflow-wrap:anywhere;margin:24px 0 20px;font-size:14px;line-height:1.6}.nav-detail-taxonomy{grid-template-columns:minmax(0,1fr) minmax(0,2fr);align-items:start;gap:24px;margin-top:20px;display:grid}.nav-taxonomy-link{width:fit-content;min-width:0;max-width:100%;color:var(--brand);overflow-wrap:anywhere;align-items:flex-start;gap:8px;font-size:13px;line-height:20px;text-decoration:none;display:inline-flex}.nav-taxonomy-link svg{flex:0 0 16px;margin-top:2px}.nav-taxonomy-link:hover{text-decoration:underline}.nav-detail-tags{flex-wrap:wrap;justify-content:flex-end;gap:16px 20px;min-width:0;display:flex}.nav-accounts,.nav-account-status{border-top:1px solid var(--line);margin-top:28px;padding-top:20px}.nav-accounts-heading{justify-content:space-between;align-items:baseline;gap:16px;display:flex}.nav-accounts-heading h3{margin:0;font-size:15px}.nav-accounts-heading>span{color:var(--muted);font-size:12px}.nav-account{padding:24px 0 12px}.nav-account+.nav-account{border-top:1px solid var(--line)}.nav-account-heading{align-items:flex-start;gap:12px;margin-bottom:14px;display:flex}.nav-account h4{overflow-wrap:anywhere;flex:1;min-width:0;margin:0;font-size:14px}.nav-account-state{border:1px solid var(--line);border-radius:var(--nav-radius);color:var(--ink);background:var(--surface);flex-shrink:0;padding:2px 8px;font-size:12px;line-height:18px}.nav-account-state[data-active=false]{color:var(--muted);background:var(--paper)}.nav-secret-row{grid-template-columns:64px minmax(0,1fr) 40px;align-items:start;gap:12px;margin:6px 0;display:grid}.nav-secret-row>span{color:var(--muted);padding-top:10px;font-size:12px}.nav-secret-row pre{white-space:pre-wrap;overflow-wrap:anywhere;margin:0;padding:8px 0;font:14px/1.6 Microsoft YaHei,Segoe UI,sans-serif}.nav-copy-notice{color:var(--brand);margin:8px 0 0;font-size:13px}.nav-drawer{width:min(310px,100% - 48px);max-width:none;height:100dvh;max-height:none;color:var(--ink);background:var(--surface);border:0;margin:0;padding:0;inset:0 auto 0 0}.nav-drawer-panel{flex-direction:column;height:100%;display:flex}.nav-drawer-panel>header{border-bottom:1px solid var(--line);justify-content:space-between;align-items:center;gap:12px;min-height:64px;padding:0 16px;display:flex}.nav-drawer .nav-sidebar-scroll{padding-top:16px}.nav-drawer .nav-categories a{min-height:44px}.nav-drawer .nav-sidebar-tags a{border:0;min-height:44px}@media (max-width:1439px){.nav-grid{grid-template-columns:repeat(3,minmax(0,1fr))}}@media (max-width:1099px){.nav-shell{padding-left:0}.nav-menu-toggle{display:inline-flex}.nav-sidebar{display:none}.nav-search{z-index:auto;width:calc(100% - 48px);margin:16px 24px 0;position:relative;top:auto;left:auto}.nav-search input{height:44px}.nav-search .nav-icon-button{--nav-control:44px;height:44px}.nav-results{padding:24px}.nav-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media (max-width:767px){.nav-shell{--nav-control:44px}.nav-header{gap:8px;padding:0 12px}.nav-header-brand{flex:1;gap:4px}.nav-header .site-brand{max-width:100%}.nav-header .site-brand__logo{flex-basis:28px;width:28px;height:28px}.nav-session{flex-shrink:0;gap:4px;font-size:12px}.nav-session>span{max-width:64px}.nav-session a{gap:4px}.nav-header-top-link{gap:4px;padding:0 6px;font-size:12px}.nav-search{width:calc(100% - 32px);margin:16px 16px 0}.nav-results{padding:24px 16px}.nav-grid{grid-template-columns:minmax(0,1fr)}.nav-group header a{min-height:44px}.nav-site-external{width:44px;height:44px}.nav-site-top{padding-right:28px}.nav-list-heading{font-size:20px}.nav-results-bar{flex-wrap:wrap;gap:12px}.nav-results-bar-right{justify-content:flex-start;gap:12px;width:100%}.nav-results-bar a,.nav-results-bar select{align-items:center;min-height:44px;display:inline-flex}.nav-dialog{width:calc(100% - 24px);max-height:calc(100dvh - 32px - env(safe-area-inset-top) - env(safe-area-inset-bottom))}.nav-dialog-close{height:44px}.nav-dialog-content{padding:0 16px 20px}.nav-detail-header{gap:16px}.nav-detail-header .nav-site-icon{flex-basis:56px;width:56px;height:56px}.nav-dialog h2{font-size:20px}.nav-detail-url{gap:4px;font-size:12px}.nav-detail-url a{flex-basis:44px;height:44px}.nav-description{margin:20px 0 12px}.nav-detail-taxonomy{grid-template-columns:minmax(0,1fr);gap:0;margin-top:12px}.nav-taxonomy-link{align-items:center;min-height:44px;padding:12px 0}.nav-taxonomy-link svg{margin-top:0}.nav-detail-tags{justify-content:flex-start;gap:0 20px}.nav-accounts,.nav-account-status{margin-top:12px}.nav-secret-row{grid-template-columns:minmax(0,1fr) 44px;gap:0 12px;margin:12px 0}.nav-secret-row>span{grid-column:1;padding:0;font-size:11px}.nav-secret-row pre{grid-column:1;padding:4px 0;font-size:13px}.nav-secret-row button{grid-area:1/2/3}}@media (prefers-reduced-motion:reduce){.nav-site{transition:none}}.nav-standalone{--ink:#27272a;--muted:#64646c;--paper:#fafafc;--surface:#fff;--line:#ededf2;--line-hover:#dedee4;--brand:#b9471c;--nav-space:16px;background:var(--paper);min-height:100dvh;color:var(--ink);padding:32px 24px 64px;font-family:Microsoft YaHei,Segoe UI,sans-serif}.nav-standalone-container{max-width:1544px;margin:0 auto}.nav-standalone .nav-site{border:1px solid var(--line);min-height:auto;padding:14px 16px;box-shadow:0 1px 3px #00000005}.nav-standalone .nav-site:hover{border-color:var(--line-hover);box-shadow:0 3px 10px #0000000a}.nav-standalone .nav-site>p{white-space:nowrap;text-overflow:ellipsis;-webkit-line-clamp:unset;min-height:0;margin:8px 0 0;line-height:1.5;display:block;overflow:hidden}