html { --lib-toolbar-height:72px; scroll-behavior:auto; scroll-padding-top:var(--lib-toolbar-height); background:var(--nz-bg); }
body { margin:0; background:radial-gradient(ellipse at 88% 0,#bca47e08,transparent 30%),var(--nz-bg); }
button,input,select { font:inherit; }
button,a,input,select,summary { -webkit-tap-highlight-color:transparent; }
.lib-skip { position:fixed; top:-100px; left:20px; z-index:50; padding:12px 20px; background:var(--nz-ink); color:var(--nz-bg)!important; }
.lib-skip:focus { top:12px; }
.visually-hidden { position:absolute; width:1px; height:1px; overflow:hidden; clip-path:inset(50%); white-space:nowrap; }
.lib-sidebar { position:fixed; inset:0 auto 0 0; width:244px; padding:32px 24px 24px; border-right:1px solid var(--nz-line); background:#0a1011; display:flex; flex-direction:column; z-index:5; overflow:hidden; }
.lib-brand { font:30px/1.2 var(--nz-serif); letter-spacing:-.045em; text-decoration:none; }
.lib-brand span { color:var(--nz-accent); }
.lib-brand-caption { margin:12px 0 32px; color:var(--nz-muted); font-size:12px; letter-spacing:.06em; line-height:1.9; }
.lib-directory-label { flex-shrink:0; margin:0 0 14px; padding-inline:12px; font-size:12px; color:var(--nz-muted); letter-spacing:.04em; }
.lib-directory-label span { margin-left:6px; opacity:.7; }
.lib-navigation { display:flex; flex-direction:column; gap:4px; min-height:0; overflow-y:auto; scrollbar-width:thin; scrollbar-color:var(--nz-line) transparent; }
.lib-navigation a { position:relative; flex-shrink:0; display:grid; grid-template-columns:20px 1fr; gap:10px; align-items:center; min-height:44px; padding:10px 12px; text-decoration:none; font-size:15px; line-height:1.5; color:var(--nz-muted); transition:color 140ms,background-color 140ms; }
.lib-navigation a>span { color:#7d8c87; font:12px/1.5 var(--nz-sans); font-variant-numeric:tabular-nums; }
.lib-navigation a::before { content:''; position:absolute; width:2px; left:0; top:12px; bottom:12px; background:var(--nz-accent); opacity:0; }
.lib-navigation a:hover { color:var(--nz-ink); background:#ffffff04; }
.lib-navigation a[aria-current] { color:var(--nz-ink); background:#bca47e0d; }
.lib-navigation a[aria-current]>span { color:var(--nz-accent); }
.lib-navigation a[aria-current]::before { opacity:1; }
.lib-navigation a:focus-visible { outline-offset:-2px; }
.lib-sidebar-bottom { flex-shrink:0; margin-top:auto; padding:24px 12px 0; }
.lib-sidebar-bottom .nz-link { justify-content:start; gap:10px; color:var(--nz-muted); }
.lib-main { margin-left:244px; padding:0 clamp(28px,4.5vw,76px); max-width:1640px; }
.lib-toolbar { position:sticky; top:0; z-index:4; display:flex; align-items:center; justify-content:space-between; gap:20px; height:var(--lib-toolbar-height); background:#090f10; border-bottom:1px solid var(--nz-line); }
.lib-toolbar>span { color:var(--nz-muted); letter-spacing:.1em; font-size:12px; }
.lib-toolbar>.nz-link { font-size:14px; gap:12px; flex-shrink:0; }
.lib-mobile-directory { display:none; }
.lib-overview { position:relative; margin-top:48px; padding:0; scroll-margin-top:24px; }
.lib-hero-copy { position:relative; z-index:1; width:70%; }
.lib-hero-copy h1 { font:400 clamp(42px,4.7vw,78px)/1.09 var(--nz-serif); letter-spacing:-.045em; margin:20px 0 28px; }
.lib-hero-copy h1 em { color:var(--nz-accent); font-weight:400; }
.lib-intro { color:var(--nz-muted); font-size:16px; line-height:1.9; margin:0 0 20px; }
.lib-hero-object { position:absolute; width:28%; aspect-ratio:1; right:0; top:23px; display:grid; place-items:center; }
.lib-hero-object img { position:relative; width:90%; height:90%; object-fit:contain; filter:brightness(.8); transform:rotate(-9deg); }
.lib-orbit { position:absolute; inset:0; border:1px solid var(--nz-line); border-radius:50%; }
.lib-orbit::after { content:''; position:absolute; inset:14%; border:1px solid var(--nz-line); border-radius:50%; }
.lib-hero-object>span { position:absolute; bottom:-30px; font-size:9px; letter-spacing:.18em; color:var(--nz-muted); }
.lib-summary { display:grid; grid-template-columns:repeat(3,1fr); gap:24px; padding:24px 0; margin-top:28px; border-bottom:1px solid var(--nz-line); }
.lib-summary strong { display:block; font:32px var(--nz-serif); color:var(--nz-accent); }
.lib-summary span { color:var(--nz-muted); font-size:12px; }
.lib-scope-guide { display:grid; grid-template-columns:1fr 1fr; gap:36px; margin-top:48px; padding-top:28px; border-top:1px solid var(--nz-line); }
.lib-scope-guide h2 { font:400 20px/1.5 var(--nz-sans); margin:0 0 12px; }
.lib-scope-guide p:not(.nz-label) { max-width:420px; margin:0; font-size:15px; line-height:1.8; color:var(--nz-muted); }
.lib-scope-guide .nz-label { margin-bottom:12px; }
.lib-section { margin-top:76px; padding:0 0 12px; scroll-margin-top:24px; }
.lib-section-heading { display:flex; flex-direction:column; gap:16px; align-items:start; margin-bottom:28px; }
.lib-section-heading .nz-label { margin-bottom:12px; }
.lib-section-heading h2 { font:400 clamp(32px,3.1vw,44px)/1.2 var(--nz-serif); letter-spacing:-.025em; margin:0; }
.lib-section-heading>p { font-size:16px; color:var(--nz-muted); margin:0; line-height:1.8; max-width:680px; }
.lib-subhead { display:flex; justify-content:space-between; align-items:center; gap:24px; margin:36px 0 20px; }
.lib-subhead h3 { font-size:15px; font-weight:400; margin:0; }
.lib-subhead>span { color:var(--nz-muted); font-size:12px; }
.lib-swatches { display:grid; grid-template-columns:repeat(4,minmax(0,1fr)); gap:20px; }
.lib-swatch { text-align:left; padding:0 0 8px; color:var(--nz-ink); min-width:0; }
.lib-swatch i { display:block; height:62px; background:var(--swatch); margin-bottom:10px; border-radius:2px; }
.lib-swatch span,.lib-swatch code { display:block; font-size:14px; white-space:nowrap; }
.lib-swatch code { font-size:12px; color:var(--nz-muted); }
.lib-neutral-grid { display:grid; grid-template-columns:repeat(4,1fr); gap:20px; margin:28px 0 0; }
.lib-neutral-grid>div { display:grid; grid-template-columns:28px 1fr; gap:3px 12px; align-items:center; font-size:12px; }
.lib-neutral-grid i { width:26px; height:26px; border-radius:50%; border:1px solid var(--nz-line); grid-row:1/3; }
.lib-neutral-grid code { color:var(--nz-muted); font-size:11px; }
.lib-type-layout { display:grid; grid-template-columns:1fr 1.25fr; gap:64px; margin-top:64px; padding-block:36px; border-block:1px solid var(--nz-line); }
.lib-type-layout h3 { font:400 clamp(30px,3vw,43px)/1.2 var(--nz-serif); margin:0 0 26px; }
.lib-type-layout h3 em { color:var(--nz-accent); }
.lib-type-layout p:not(.nz-label) { font-size:14px; color:var(--nz-muted); max-width:330px; }
.lib-type-scale>div { display:grid; gap:4px; border-bottom:1px solid var(--nz-line); padding:13px 0; }
.lib-type-scale>div:first-child { padding-top:0; }
.lib-type-scale>div:last-child { border:0; }
.lib-type-scale code { color:#8e9c96; font-size:11px; }
.lib-type-scale .nz-label { margin:0; }
.lib-type-display { font:40px/1.18 var(--nz-serif); }
.lib-type-body { font-size:var(--nz-body); }.lib-type-small { font-size:var(--nz-small); }.lib-type-ui { font-size:var(--nz-ui); }.lib-type-caption { font-size:var(--nz-caption); }
.lib-spacing { display:flex; align-items:end; gap:clamp(16px,3vw,40px); padding:24px; background:var(--nz-surface); flex-wrap:wrap; }
.lib-spacing>div { display:grid; gap:14px; justify-items:center; color:var(--nz-muted); font-size:12px; }
.lib-spacing i { display:block; width:var(--step); height:24px; background:var(--nz-accent); opacity:.6; }
.lib-catalog-controls { display:flex; justify-content:space-between; align-items:center; gap:20px; }
.lib-filters { display:flex; flex-wrap:wrap; gap:6px; }
.lib-filters button { display:inline-flex; align-items:center; gap:8px; min-height:44px; padding:0 14px; background:transparent; border:1px solid transparent; color:var(--nz-muted); font-size:14px; border-radius:4px; cursor:pointer; }
.lib-filters button[aria-pressed=true] { border-color:var(--nz-line); color:var(--nz-accent); background:var(--nz-surface); }
.lib-filters button span { font-size:11px; opacity:.7; }
.lib-search { position:relative; width:230px; }
.lib-search input { color:var(--nz-ink); background:transparent; border:0; border-bottom:1px solid var(--nz-line); font-size:13px; padding:12px 28px 12px 0; width:100%; min-height:44px; }
.lib-search>span:last-child { position:absolute; right:0; top:7px; pointer-events:none; color:var(--nz-muted); font-size:23px; }
.lib-result { margin:18px 0; color:var(--nz-muted); font-size:12px; }
.lib-component-grid { display:block; }
.lib-component-group + .lib-component-group { margin-top:48px; }
.lib-group-heading { display:flex; justify-content:space-between; align-items:start; gap:20px; margin-bottom:20px; }
.lib-group-heading h3 { font:400 26px/1.3 var(--nz-serif); margin:0; }
.lib-group-heading h3 span { display:inline-block; font:14px var(--nz-sans); color:var(--nz-muted); margin-left:10px; }
.lib-group-heading p { font-size:14px; color:var(--nz-muted); margin:8px 0 0; }
.lib-group-count { flex-shrink:0; color:var(--nz-muted); font-size:13px; padding-top:6px; }
.lib-group-list { border:1px solid var(--nz-line); }
.lib-component { min-width:0; display:grid; grid-template-columns:minmax(190px,25%) minmax(0,1fr); background:#0b1213; scroll-margin-top:24px; }
.lib-component + .lib-component { border-top:1px solid var(--nz-line); }
.lib-component[hidden] { display:none; }
.lib-component-meta { grid-row:span 2; padding:24px; border-right:1px solid var(--nz-line); }
.lib-component-head { display:block; }
.lib-component-head h4 { font-size:18px; line-height:1.4; margin:8px 0 0; font-weight:400; }
.lib-component-head h4 span { display:block; margin-top:6px; color:var(--nz-accent); font-size:14px; line-height:1.6; }
.lib-component-head>span { color:var(--nz-muted); font:12px monospace; }
.lib-demo { min-height:140px; display:flex; align-items:center; padding:28px 32px; background:#101819; container-type:inline-size; }
.lib-demo>div { width:100%; min-width:0; }
.lib-demo .nz-project-row { width:100%; }
.lib-demo-description { margin:18px 0 0; color:var(--nz-muted); font-size:14px; line-height:1.8; }
.lib-code { grid-column:2; border-top:1px solid var(--nz-line); min-width:0; }
.lib-code summary { cursor:pointer; font-size:13px; color:var(--nz-muted); padding:12px 32px; min-height:44px; }
.lib-code-tools { display:flex; justify-content:space-between; padding:0 24px; align-items:center; font-size:12px; color:var(--nz-muted); }
.lib-code button { background:transparent; color:var(--nz-accent); border:1px solid var(--nz-line); padding:7px 12px; font-size:12px; cursor:pointer; min-height:36px; }
pre { padding:20px; background:#060c0d; border:1px solid var(--nz-line); font:12px/1.75 Consolas,monospace; white-space:pre-wrap; overflow-wrap:anywhere; }
.lib-code pre { margin:14px 24px 24px; max-height:330px; overflow:auto; }
.lib-inline { display:flex; align-items:center; gap:20px; flex-wrap:wrap; }
.lib-states { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:24px 32px; padding:4px 0; }
.lib-states>div { display:grid; gap:8px; justify-items:start; }
.lib-states small { color:var(--nz-muted); font-size:12px; }
.lib-state-button { gap:12px; }
.lib-demo .nz-cover { max-width:460px; margin:auto; }
.lib-demo .nz-heading { font-size:36px; }
.lib-demo-note { font-size:13px; color:var(--nz-muted); margin:14px 0 0; }
.lib-motion-stage { padding:42px; background:var(--nz-surface); display:flex; align-items:start; justify-content:space-between; gap:30px; }
.lib-motion-stage .nz-tag { margin-bottom:28px; }
.lib-motion-link { display:flex; font-size:clamp(20px,2.5vw,32px); font-family:var(--nz-serif); }
.lib-motion-stage p { color:var(--nz-muted); font-size:13px; margin:22px 0 0; }
.lib-motion-rules { display:grid; grid-template-columns:repeat(4,1fr); gap:24px; margin-top:30px; }
.lib-motion-rules>div { border-top:1px solid var(--nz-line); padding-top:20px; }
.lib-motion-rules strong { display:block; font:30px var(--nz-serif); color:var(--nz-accent); margin-bottom:12px; }
.lib-motion-rules span { font-size:13px; color:var(--nz-muted); line-height:1.7; }
.lib-note { color:var(--nz-muted); font-size:13px; line-height:1.8; margin:28px 0 0; }
.lib-usage-grid { display:grid; grid-template-columns:1fr 1fr; gap:30px; }
.lib-usage-grid>div { min-width:0; }
.lib-usage-grid h3 { font-size:16px; font-weight:400; }
.lib-usage-grid p { color:var(--nz-muted); font-size:14px; }
.lib-integration { border-left:1px solid var(--nz-accent); padding:0 0 0 20px; }
.lib-integration strong { color:var(--nz-ink); font-weight:400; }
.lib-integration p { margin:4px 0 0; }
.lib-footer { display:flex; justify-content:space-between; gap:20px; border-top:1px solid var(--nz-line); padding:32px 0 46px; margin-top:72px; color:var(--nz-muted); font-size:12px; }
.lib-footer a { text-decoration:none; }
.lib-toast { position:fixed; right:24px; bottom:24px; z-index:30; padding:12px 20px; background:var(--nz-ink); color:var(--nz-bg); font-size:14px; opacity:0; pointer-events:none; transition:opacity 180ms; }
.lib-toast.is-visible { opacity:1; }
@media(max-width:1100px) {
  .lib-sidebar { width:212px; padding:28px 16px; }.lib-main { margin-left:212px; padding-inline:32px; }
  .lib-section-heading { align-items:start; flex-direction:column; gap:18px; }
  .lib-swatches { grid-template-columns:repeat(4,minmax(0,1fr)); }
  .lib-neutral-grid { grid-template-columns:1fr 1fr; }
  .lib-type-layout { gap:30px; }
  .lib-states { grid-template-columns:repeat(2,1fr); }
  .lib-component-grid { grid-template-columns:1fr; }
}
@media(max-width:760px) {
  html { --lib-toolbar-height:64px; }.lib-sidebar { position:relative; width:auto; padding:24px; border-right:0; border-bottom:1px solid var(--nz-line); }
  .lib-brand-caption { margin:8px 0 0; }.lib-brand-caption br { display:none; }
  .lib-navigation,.lib-directory-label { display:none; }
  .lib-sidebar-bottom { display:none; }.lib-main { margin-left:0; padding-inline:24px; }
  .lib-toolbar { gap:16px; }.lib-toolbar>span { display:none; }
  .lib-mobile-directory { display:block; min-width:0; flex:1; }
  .lib-mobile-directory select { width:100%; min-height:44px; font:14px/1.5 var(--nz-sans); color:var(--nz-ink); background:var(--nz-bg); border:0; border-bottom:1px solid var(--nz-line); border-radius:0; padding:8px 18px 8px 0; }
  .lib-toolbar>.nz-link { font-size:13px; gap:6px; }
  .lib-overview { margin-top:36px; }.lib-hero-copy { width:100%; }.lib-hero-object { display:none; }.lib-hero-copy h1 { font-size:clamp(39px,9.8vw,58px); }.lib-intro { font-size:14px; }.lib-intro br { display:none; }
  .lib-summary { gap:14px; margin-top:36px; }.lib-summary span { font-size:11px; display:block; line-height:1.8; }.lib-summary strong { font-size:28px; }
  .lib-section { margin-top:62px; }.lib-subhead { align-items:start; flex-direction:column; gap:10px; }
  .lib-swatches { gap:8px; }.lib-swatch span { font-size:10px; }.lib-swatch code { font-size:9px; }.lib-swatch i { height:48px; }
  .lib-type-layout { grid-template-columns:1fr; }.lib-type-layout p:not(.nz-label) { max-width:none; }.lib-spacing { gap:22px; }
  .lib-catalog-controls { flex-direction:column; align-items:stretch; }.lib-search { width:100%; }.lib-filters { gap:2px; }.lib-filters button { padding-inline:12px; }
  .lib-component { grid-template-columns:1fr; }.lib-component-meta { grid-row:auto; padding:20px; border-right:0; border-bottom:1px solid var(--nz-line); }
  .lib-component-head { display:flex; gap:14px; align-items:baseline; }.lib-component-head h4 { margin:0; }.lib-demo-description { margin-top:14px; }
  .lib-demo { padding:24px; }.lib-code { grid-column:1; }.lib-code summary { padding-inline:24px; }.lib-code pre { margin-inline:20px; }.lib-states { gap:24px 16px; }.lib-state-button { gap:8px; font-size:13px; }
  .lib-group-heading h3 { font-size:24px; }.lib-group-heading h3 span { display:block; margin:6px 0 0; }
  .lib-motion-stage { padding:24px; flex-direction:column; }.lib-motion-rules { grid-template-columns:1fr 1fr; }.lib-usage-grid { grid-template-columns:1fr; gap:12px; }.lib-footer { flex-wrap:wrap; }
}
@media(prefers-reduced-motion:reduce) { html { scroll-behavior:auto; } }
/* Specimens respond to their preview column, not the full browser width. */
@container (max-width:520px) {
  .lib-demo .nz-chapter-head { grid-template-columns:1fr; gap:20px; }
  .lib-demo .nz-chapter-head>.nz-body { padding-top:0; }
  .lib-demo .nz-project-row { grid-template-columns:24px minmax(0,1fr) 24px; gap:16px; padding:24px 0; }
  .lib-demo .nz-project-row>span { grid-column:2; grid-row:2; }
  .lib-demo .nz-project-row>b { grid-column:3; grid-row:1/3; }
}
@container (max-width:300px) {
  .lib-states,.lib-demo .nz-facts { grid-template-columns:1fr; }
}
@media(max-width:900px) and (min-width:761px) {
  .lib-component { grid-template-columns:170px minmax(0,1fr); }
  .lib-component-meta { padding:20px; }
  .lib-demo { padding:24px; }
}
@media(max-width:760px) {
  .lib-scope-guide { grid-template-columns:1fr; gap:28px; margin-top:32px; }
}

/* The catalog's compositions and controls stay separate from portable components. */
[hidden] { display:none!important; }
.lib-principles { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:32px; padding:8px 0; }
.lib-principles p { font-size:15px; }
.lib-principles span,.lib-principles small { display:block; }
.lib-principles span { color:var(--nz-accent); font-size:12px; margin-bottom:10px; letter-spacing:.04em; }
.lib-principles small { color:var(--nz-muted); font-size:13px; margin-top:8px; line-height:1.7; }
.lib-foundation-details { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; margin-top:48px; }
.lib-foundation-details article { border-top:1px solid var(--nz-line); padding-top:24px; }
.lib-foundation-details h3 { font-size:17px; font-weight:400; margin:20px 0 12px; }
.lib-foundation-details p:not(.nz-label) { color:var(--nz-muted); font-size:14px; line-height:1.8; }
.lib-foundation-details small { color:var(--nz-accent); font-size:13px; }
.lib-shape-sample { display:flex; gap:16px; height:64px; }
.lib-shape-sample span { width:88px; display:grid; place-items:center; border:1px solid var(--nz-line); color:var(--nz-accent); font:15px var(--nz-sans); }
.lib-shape-sample span:first-child { border-radius:var(--nz-radius); background:var(--nz-surface); }
.lib-symbol-sample { height:64px; display:flex; align-items:center; gap:26px; font-size:30px; color:var(--nz-accent); }
.lib-symbol-sample span { color:var(--nz-muted); }
.lib-foundation-details .lib-reading-title { font:30px/1.2 var(--nz-serif); margin-top:0; }
.lib-journey { display:flex; align-items:center; justify-content:space-between; flex-wrap:wrap; gap:14px; padding-bottom:28px; font-size:13px; color:var(--nz-muted); }
.lib-journey b { color:var(--nz-accent); font-weight:400; }
.lib-navigation-demo { padding:28px 32px; background:var(--nz-surface); border:1px solid var(--nz-line); }
.lib-navigation-demo .nz-index { border-top:0; padding-top:0; }
.lib-navigation-demo [aria-current] { color:var(--nz-accent); }
.lib-reading-panel { padding:36px 0 26px; min-height:230px; }
.lib-reading-panel h3 { font:30px/1.3 var(--nz-serif); margin:0 0 18px; }
.lib-reading-panel>p:last-child { font-size:16px; max-width:660px; color:var(--nz-muted); }
.lib-reading-controls { display:flex; align-items:center; justify-content:space-between; gap:24px; border-top:1px solid var(--nz-line); padding-top:20px; }
.lib-reading-controls small { color:var(--nz-muted); font-size:13px; }
.lib-guideline-pair { display:grid; grid-template-columns:1fr 1fr; gap:36px; margin-top:24px; }
.lib-guideline-pair p { font-size:14px; color:var(--nz-muted); }
.lib-guideline-pair strong { display:block; color:var(--nz-ink); font-weight:400; font-size:15px; margin-bottom:8px; }
.lib-project-composition { padding:36px; background:var(--nz-surface); border:1px solid var(--nz-line); }
.lib-project-intro { display:grid; grid-template-columns:1fr 1.15fr; gap:36px; align-items:center; margin-bottom:36px; }
.lib-project-intro .nz-heading { font-size:clamp(32px,3.5vw,48px); }
.lib-project-intro .nz-heading em { color:var(--nz-accent); }
.lib-project-intro .nz-body { font-size:15px; margin:22px 0 16px; }
.lib-project-intro figure { min-width:0; }
.lib-composition-key { display:flex; flex-wrap:wrap; gap:16px 28px; padding:22px 0; border-bottom:1px solid var(--nz-line); font-size:13px; color:var(--nz-muted); }
.lib-composition-key b { font-weight:400; color:var(--nz-accent); margin-right:6px; }
.lib-next-label { margin-top:36px; }
.lib-interaction-details { display:grid; grid-template-columns:1fr 1fr; gap:24px; margin-top:44px; }
.lib-interaction-details article { padding:28px; border:1px solid var(--nz-line); min-width:0; }
.lib-interaction-details h3 { margin:0 0 24px; font:28px/1.4 var(--nz-serif); }
.lib-interaction-details dl { margin:0; }
.lib-interaction-details dl>div { padding:16px 0; border-top:1px solid var(--nz-line); }
.lib-interaction-details dt { font-size:13px; color:var(--nz-accent); margin-bottom:7px; }
.lib-interaction-details dd { margin:0; font-size:14px; color:var(--nz-muted); }
.lib-image-trigger { display:block; padding:0; margin-bottom:24px; width:100%; border:0; color:var(--nz-ink); background:var(--nz-surface); cursor:pointer; text-align:left; }
.lib-image-trigger img { width:100%; max-height:180px; object-fit:contain; display:block; background:#131b1d; }
.lib-image-trigger span { display:flex; justify-content:space-between; gap:12px; padding:12px 16px; font-size:14px; }
.lib-image-trigger b { color:var(--nz-accent); font-weight:400; }
.lib-playground { border:1px solid var(--nz-line); }
.lib-preview-toolbar { display:flex; justify-content:space-between; align-items:center; gap:24px; padding:12px 20px; border-bottom:1px solid var(--nz-line); }
.lib-device-switch { display:flex; gap:4px; }
.lib-device-switch button,.lib-reset-button { min-height:44px; padding:8px 16px; border:1px solid var(--nz-line); background:transparent; color:var(--nz-muted); font-size:14px; border-radius:4px; cursor:pointer; }
.lib-device-switch button[aria-pressed=true] { color:var(--nz-ink); background:var(--nz-surface); border-color:var(--nz-accent); }
.lib-preview-toolbar .nz-link { gap:10px; }
.lib-playground-layout { display:grid; grid-template-columns:minmax(0,1fr) 224px; }
.lib-playground.is-settings-closed .lib-playground-layout { grid-template-columns:minmax(0,1fr); }
.lib-preview-stage { min-width:0; padding:20px; background:repeating-linear-gradient(90deg,#ffffff02 0,#ffffff02 1px,transparent 1px,transparent 24px),#070c0d; }
.lib-preview-meta { display:flex; justify-content:space-between; gap:12px; color:var(--nz-muted); font-size:12px; margin-bottom:18px; }
.lib-preview-meta span:last-child { font-size:10px; letter-spacing:.1em; }
#component-preview { display:block; margin:0 auto; width:100%; height:640px; border:1px solid var(--nz-line); background:var(--nz-bg); color-scheme:dark; }
.lib-playground[data-device=mobile] #component-preview { width:390px; max-width:100%; height:720px; border-radius:22px; }
.lib-preview-settings { padding:24px 20px; border-left:1px solid var(--nz-line); background:var(--nz-surface); min-width:0; }
.lib-preview-settings>label:not(.nz-toggle) { display:block; font-size:13px; margin:20px 0 8px; }
.lib-preview-settings select { display:block; width:100%; min-height:44px; background:var(--nz-bg); border:1px solid var(--nz-line); border-radius:4px; color:var(--nz-ink); padding:8px; font-size:13px; }
.lib-preview-settings select:disabled { opacity:.45; }
.lib-preview-settings>small { display:block; font-size:12px; color:var(--nz-muted); line-height:1.7; margin-top:8px; }
.lib-preview-settings .nz-toggle { margin-top:22px; font-size:13px; }
.lib-preview-settings .nz-label { margin-bottom:24px; }
.lib-reset-button { width:100%; margin-top:28px; color:var(--nz-ink); }
.lib-preview-settings .lib-note { font-size:12px; margin-top:16px; }
.lib-preview-status { margin:0; padding:12px 20px; color:var(--nz-muted); border-top:1px solid var(--nz-line); font-size:13px; }
.lib-in-use { display:grid; grid-template-columns:repeat(3,minmax(0,1fr)); gap:24px; margin-bottom:36px; }
.lib-in-use a { display:block; padding:24px; background:var(--nz-surface); border-top:1px solid var(--nz-line); text-decoration:none; }
.lib-in-use span,.lib-in-use strong,.lib-in-use small { display:block; }
.lib-in-use span { font-size:12px; color:var(--nz-accent); }
.lib-in-use strong { font-size:17px; font-weight:400; line-height:1.6; margin:16px 0; }
.lib-in-use small { font-size:13px; color:var(--nz-muted); }
.lib-in-use a:hover { border-color:var(--nz-accent); }
.lib-reference-notes { margin-top:36px; }
.lib-reference-notes p { margin:16px 0 0; }
.lib-reference-notes a { color:var(--nz-accent); text-underline-offset:4px; }
.lib-demo-description { font-size:14px; }
.lib-feedback{margin-top:64px;scroll-margin-top:24px}
.lib-feedback-heading{display:flex;justify-content:space-between;gap:28px;align-items:center;margin-bottom:28px}
.lib-feedback-heading h3{font:normal clamp(28px,3vw,39px)/1.2 var(--nz-serif);letter-spacing:-.02em;margin:16px 0}
.lib-feedback-heading p:not(.nz-label){font-size:15px;line-height:1.8;color:var(--nz-muted);margin:0}
.lib-feedback-heading>a{flex-shrink:0;font-size:13px}
.lib-feedback-layout{display:grid;grid-template-columns:230px minmax(0,1fr);border:1px solid var(--nz-line);border-radius:8px;overflow:hidden}
.lib-feedback-controls{padding:24px 20px;display:flex;flex-direction:column;gap:22px;border-right:1px solid var(--nz-line);background:var(--nz-surface)}
.lib-feedback-controls .nz-label{margin:0}
.lib-feedback-buttons{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.lib-feedback-buttons button{min-height:44px;font:13px/1.5 var(--nz-sans);color:var(--nz-ink);background:transparent;border:1px solid var(--nz-line);border-radius:4px;padding:8px;cursor:pointer}
.lib-feedback-buttons button:hover{border-color:var(--nz-accent);color:var(--nz-accent)}
.lib-feedback-buttons button:focus-visible,.lib-feedback-controls select:focus-visible{outline:2px solid var(--nz-accent);outline-offset:3px}
.lib-feedback-select{font-size:13px;color:var(--nz-muted);margin-bottom:-12px}
.lib-feedback-controls select{width:100%;min-height:44px;background:var(--nz-bg);border:1px solid var(--nz-line);border-radius:4px;color:var(--nz-ink);font:13px var(--nz-sans);padding:8px}
.lib-feedback-controls .nz-toggle{font-size:13px}
.lib-feedback-controls>.nz-link{align-self:flex-start;font-size:14px}
.lib-feedback-stage{min-height:500px;position:relative;display:flex;align-items:center;justify-content:center;padding:64px 28px 120px;background:radial-gradient(ellipse at center,color-mix(in srgb,var(--nz-accent) 5%,transparent),transparent 70%)}
.lib-feedback-stage-label{position:absolute;top:22px;left:24px;right:24px;display:flex;justify-content:space-between;gap:12px;font-size:11px;letter-spacing:.08em;color:var(--nz-muted)}
.lib-share-card{width:100%;max-width:420px;min-width:0;padding:24px;border:1px solid var(--nz-line);border-radius:4px;background:var(--nz-bg)}
.lib-share-project{display:grid;grid-template-columns:80px minmax(0,1fr);gap:16px;align-items:center;margin-bottom:24px}
.lib-share-project img{display:block;width:80px;height:60px;object-fit:cover;border:1px solid var(--nz-line);border-radius:2px}
.lib-share-project h4{font:normal 30px/1.1 var(--nz-serif);color:var(--nz-ink);margin:0 0 6px}
.lib-share-project p{font-size:13px;line-height:1.5;color:var(--nz-muted);margin:0}
.lib-share-card>label{display:block;font-size:13px;color:var(--nz-muted);margin-bottom:8px}
.lib-share-card>input{display:block;width:100%;min-width:0;height:44px;padding:10px 12px;color:var(--nz-ink);background:var(--nz-surface);border:1px solid var(--nz-line);border-radius:4px;font:13px/1.5 var(--nz-sans)}
.lib-share-copy{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:44px;margin-top:16px;padding:10px 16px;border:1px solid var(--nz-accent);border-radius:4px;background:var(--nz-accent);color:var(--nz-bg);font:500 14px/1.5 var(--nz-sans);cursor:pointer;transition:background-color 160ms,border-color 160ms}
.lib-share-copy:hover:not(:disabled){background:color-mix(in srgb,var(--nz-accent) 85%,white);border-color:color-mix(in srgb,var(--nz-accent) 85%,white)}
.lib-share-copy:disabled{opacity:.65;cursor:wait}
.lib-share-hint{min-height:22px;font-size:13px;line-height:1.7;color:var(--nz-muted);margin:12px 0 0}
.lib-share-manual{font-size:13px;margin-top:4px;color:var(--nz-muted)}
.lib-feedback-rules{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:24px;margin-top:24px}
.lib-feedback-rules p{font-size:13px;line-height:1.8;color:var(--nz-muted);margin:0}
.lib-feedback-rules strong{display:block;color:var(--nz-ink);font-weight:500;font-size:14px;margin-bottom:6px}
.lib-toast-install{margin:32px 0}
.lib-toast-install pre{overflow:auto;max-width:100%;font-size:13px;line-height:1.8}
@media(max-width:1100px){.lib-feedback-heading{display:block}.lib-feedback-heading>a{margin-top:16px}.lib-feedback-layout{grid-template-columns:210px minmax(0,1fr)}}
@media(max-width:900px){.lib-feedback-layout{grid-template-columns:1fr}.lib-feedback-controls{border-right:0;border-top:1px solid var(--nz-line)}.lib-feedback-buttons{grid-template-columns:repeat(3,1fr)}.lib-feedback-buttons button:last-child{grid-column:auto}.lib-feedback-rules{grid-template-columns:1fr;gap:16px}.lib-feedback-stage{order:-1}}
@media(max-width:480px){.lib-feedback-buttons{grid-template-columns:1fr 1fr}.lib-share-card{padding:20px}.lib-share-project{grid-template-columns:64px minmax(0,1fr);gap:12px}.lib-share-project img{width:64px;height:54px}.lib-feedback-stage{padding:60px 16px 120px}.lib-feedback-stage-label{left:16px;right:16px;letter-spacing:.03em}.lib-feedback-controls{padding:20px 16px}}
@media(min-width:761px) and (max-height:700px) {
  .lib-sidebar { padding-block:20px; }.lib-brand-caption { margin:10px 0 20px; }.lib-navigation { gap:0; }.lib-sidebar-bottom { padding-top:16px; }
}
@media(max-width:1100px) {
  .lib-playground-layout { grid-template-columns:1fr; }.lib-preview-settings { border-left:0; border-top:1px solid var(--nz-line); display:grid; grid-template-columns:1fr 1fr; gap:10px 24px; align-items:center; }
  .lib-preview-settings .nz-label,.lib-preview-settings .lib-note { grid-column:1/-1; }.lib-preview-settings .nz-label { margin:0; }
  .lib-preview-settings>small { grid-column:2; }.lib-preview-settings>label:not(.nz-toggle) { margin:0; }
  .lib-preview-settings .nz-toggle { margin:0; }.lib-reset-button { margin:0; }.lib-in-use { gap:14px; }
}
@media(max-width:760px) {
  .lib-principles,.lib-foundation-details,.lib-guideline-pair,.lib-interaction-details,.lib-in-use { grid-template-columns:1fr; gap:16px; }
  .lib-principles { padding:10px 0; }.lib-principles p { margin:12px 0; }.lib-principles small { margin-top:4px; }
  .lib-principles span { margin-bottom:6px; }.lib-foundation-details { gap:28px; }.lib-foundation-details p:not(.nz-label) { font-size:15px; }
  .lib-reading-controls { gap:16px; flex-wrap:wrap; }.lib-reading-controls small { width:100%; order:3; }.lib-navigation-demo { padding:20px; }
  .lib-reading-panel { min-height:260px; }.lib-journey { display:none; }.lib-navigation-demo .nz-index { gap:6px 16px; }.lib-navigation-demo .nz-index a { font-size:13px; gap:8px; }
  .lib-project-composition { padding:24px; }.lib-project-intro { grid-template-columns:1fr; gap:24px; }.lib-project-intro .nz-heading { font-size:38px; }
  .lib-interaction-details article { padding:24px; }.lib-preview-toolbar { gap:12px; flex-wrap:wrap; padding:12px; }.lib-preview-toolbar .nz-link { font-size:13px; }
  .lib-preview-stage { padding:12px; }.lib-preview-meta { font-size:11px; }.lib-preview-meta span:last-child { display:none; }
  .lib-preview-settings { padding:20px; grid-template-columns:1fr; gap:10px; }.lib-preview-settings>small { grid-column:1; }
  .lib-preview-settings>label:not(.nz-toggle) { margin-top:16px; }.lib-preview-settings .nz-toggle { margin-top:18px; }.lib-reset-button { margin-top:12px; }
  .lib-swatch span { font-size:12px; }.lib-swatch code { font-size:11px; }.lib-swatches { grid-template-columns:repeat(2,minmax(0,1fr)); }
  .lib-summary span { font-size:12px; }.lib-preview-settings select { font-size:14px; }
}

/* Portfolio entry followed by six project-specific guideline systems. */
.lib-in-use > a:first-child { grid-column:1 / -1; }