:root {
  --canvas: var(--stepkit-bg, #f7f7f8);
  --surface: var(--stepkit-surface, #fff);
  --surface-soft: var(--stepkit-surface-muted, #f0f0f3);
  --ink: var(--stepkit-fg, #17181c);
  --muted: var(--stepkit-muted, #626572);
  --faint: var(--stepkit-muted, #626572);
  --line: var(--stepkit-border, #e3e4e9);
  --accent: var(--stepkit-accent, #6950df);
  --accent-strong: var(--stepkit-accent-strong, #5137c7);
  --accent-soft: var(--stepkit-accent-soft, #eeeafd);
  --accent-ink: var(--stepkit-accent-text, #fff);
  --focus: var(--stepkit-accent, #6950df);
  --radius-sm: var(--stepkit-radius, 16px);
  --radius-md: var(--stepkit-radius, 16px);
  --radius-lg: var(--stepkit-radius, 16px);
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
  --space-9: 56px;
  --shadow-sm: 0 2px 8px rgb(31 26 64 / 6%);
  --shadow-md: 0 12px 32px rgb(31 26 64 / 10%);
  --sans: var(--stepkit-font-sans, Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif);
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
}
* { box-sizing: border-box; }
html { min-width: 320px; background: var(--canvas); color-scheme: light; }
html[data-ui-mode='dark'], html[data-ui-preset='terminal'] { color-scheme: dark; }
html[data-ui-mode='dark'] { --shadow-sm: 0 2px 8px rgb(0 0 0 / 16%); --shadow-md: 0 12px 32px rgb(0 0 0 / 24%); }
html[data-ui-preset='terminal'] { --shadow-sm: none; --shadow-md: none; }
body { margin: 0; min-width: 320px; color: var(--ink); background: var(--canvas); font: 400 14px/1.55 var(--sans); }
::selection { color: var(--accent-ink); background: var(--accent); }
a { color: inherit; text-decoration: none; }
a:hover { color: var(--accent); }
button, input, select { font: inherit; color: inherit; }
button, input, select { border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); }
button { min-height: 44px; padding: 0 14px; cursor: pointer; }
button:hover { border-color: var(--accent); }
button:focus-visible, a:focus-visible, input:focus-visible, select:focus-visible, summary:focus-visible { outline: 3px solid var(--focus); outline-offset: 2px; }
input, select { min-height: 44px; padding: 0 12px; }
h1, h2, h3, h4, p { margin: 0; }
h1, h2, h3, h4 { color: var(--ink); line-height: 1.15; letter-spacing: -0.03em; }
h1 { font-size: clamp(30px, 4vw, 48px); font-weight: 750; }
h2 { font-size: 24px; font-weight: 720; }
h3 { font-size: 18px; font-weight: 700; }
h4 { font-size: 14px; font-weight: 700; }
p { color: var(--muted); }
code, pre { font-family: var(--mono); }
code { font-size: .86em; }
pre { margin: 0; overflow: auto; white-space: pre; font-size: 12px; line-height: 1.6; }
.skip-link { position: fixed; z-index: 100; left: 16px; top: -60px; padding: 10px 14px; border-radius: var(--radius-sm); background: var(--accent); color: var(--accent-ink); }
.skip-link:focus { top: 16px; }
.app-shell { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; display: flex; flex-direction: column; gap: var(--space-7); height: 100vh; overflow-y: auto; padding: 28px 18px 20px; border-right: 1px solid var(--line); background: var(--surface); }
.brand { display: flex; align-items: center; gap: 10px; font-size: 19px; font-weight: 760; letter-spacing: -0.04em; }
.brand-mark { display: grid; width: 30px; height: 30px; place-items: center; border-radius: 10px; background: var(--accent); color: var(--accent-ink); font-size: 13px; font-weight: 800; }
.brand small { display: block; margin-top: 1px; color: var(--faint); font-size: 10px; font-weight: 600; letter-spacing: .08em; text-transform: uppercase; }
.sidebar-section { display: grid; gap: 8px; }
.sidebar-label { padding: 0 10px; color: var(--faint); font-size: 10px; font-weight: 750; letter-spacing: .12em; text-transform: uppercase; }
.sidebar-nav { display: grid; gap: 3px; }
.sidebar-nav a, .category-link { display: flex; align-items: center; gap: 9px; min-height: 44px; padding: 0 10px; border-radius: var(--radius-sm); color: var(--muted); font-weight: 560; }
.sidebar-nav a:hover, .sidebar-nav a[aria-current='page'], .category-link:hover, .category-link[aria-current='page'] { background: var(--accent-soft); color: var(--stepkit-accent-on-soft, var(--accent-strong)); }
.sidebar-nav a[aria-current='page'] { font-weight: 700; }
.nav-icon { display: inline-block; width: 18px; color: var(--faint); font-size: 15px; text-align: center; }
.sidebar-spacer { flex: 1; }
.theme-mini { display: grid; gap: 8px; padding: 14px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-soft); }
.theme-mini h3 { font-size: 13px; letter-spacing: 0; }
.theme-mini p { font-size: 12px; }
.theme-mini .theme-row { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.theme-mini label { display: grid; gap: 4px; color: var(--faint); font-size: 10px; font-weight: 700; letter-spacing: .06em; text-transform: uppercase; }
.theme-mini select { width: 100%; min-height: 44px; padding: 0 7px; font-size: 12px; }
.sidebar-foot { display: flex; align-items: center; justify-content: space-between; color: var(--faint); font-size: 11px; }
.sidebar-foot a { text-decoration: underline; text-underline-offset: 3px; }
.main-column { min-width: 0; }
.mobile-bar { display: none; align-items: center; justify-content: space-between; min-height: 64px; padding: 12px 20px; border-bottom: 1px solid var(--line); background: color-mix(in srgb, var(--surface) 88%, transparent); backdrop-filter: blur(14px); }
.menu-toggle { min-width: 44px; padding: 0; }
.page-wrap { width: min(100% - 56px, 1280px); margin: 0 auto; padding: 48px 0 80px; }
.page-wrap.narrow { width: min(100% - 56px, 980px); }
.site-footer { width: min(100% - 56px, 1280px); margin: 0 auto; padding: 24px 0 36px; border-top: 1px solid var(--line); color: var(--faint); font-size: 12px; }
.site-footer nav { display: flex; flex-wrap: wrap; gap: 16px; margin-top: 8px; }
.catalogue-hero { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 28px; margin-bottom: 36px; }
.catalogue-hero-copy { max-width: 680px; display: grid; gap: 14px; }
.catalogue-hero-copy p { max-width: 58ch; font-size: 16px; line-height: 1.65; }
.hero-facts { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.fact-pill { padding: 9px 12px; border: 1px solid var(--line); border-radius: 99px; background: var(--surface); color: var(--muted); font-size: 12px; font-weight: 620; box-shadow: var(--shadow-sm); }
.fact-pill strong { color: var(--ink); }
.library-toolbar { display: flex; align-items: end; gap: 12px; margin-bottom: 22px; }
.search-field { position: relative; flex: 1; }
.search-field label, .filter-field label { display: block; margin-bottom: 7px; color: var(--muted); font-size: 11px; font-weight: 700; }
.search-field input { width: 100%; padding-left: 40px; }
.search-icon { position: absolute; bottom: 12px; left: 14px; color: var(--faint); pointer-events: none; }
.filter-field { width: 190px; }
.filter-field select { width: 100%; }
.view-toggle { display: flex; gap: 0; }
.view-toggle button { min-width: 44px; padding: 0 10px; border-radius: 0; color: var(--muted); }
.view-toggle button:first-child { border-radius: var(--radius-sm) 0 0 var(--radius-sm); }
.view-toggle button:last-child { border-left: 0; border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.view-toggle button[aria-pressed='true'] { background: var(--accent-soft); color: var(--stepkit-accent-on-soft, var(--accent-strong)); }
.category-strip { display: flex; gap: 8px; overflow-x: auto; margin-bottom: 20px; padding-bottom: 3px; scrollbar-width: thin; }
.category-chip { min-height: 44px; padding: 0 13px; border: 1px solid var(--line); border-radius: 10px; background: var(--surface); color: var(--muted); font-size: 12px; font-weight: 650; white-space: nowrap; }
.category-chip[aria-pressed='true'] { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); }
.catalogue-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 20px; }
.catalogue-grid[data-view='list'] { grid-template-columns: 1fr; }
.catalogue-card { min-width: 0; overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); transition: box-shadow .2s ease, transform .2s ease, border-color .2s ease; }
.catalogue-card:hover { border-color: color-mix(in srgb, var(--accent) 50%, var(--line)); box-shadow: var(--shadow-md); transform: translateY(-2px); }
.catalogue-card[hidden] { display: none; }
.card-preview { position: relative; min-height: 264px; overflow: hidden; background: linear-gradient(135deg, color-mix(in srgb, var(--accent-soft) 70%, var(--surface)), var(--surface)); }
.card-preview iframe { display: block; width: 100%; height: 264px; border: 0; background: transparent; }
.preview-play { position: absolute; z-index: 1; top: 12px; right: 14px; min-width: 76px; border-color: var(--accent); background: var(--accent); color: var(--accent-ink); font-size: 12px; font-weight: 750; box-shadow: var(--shadow-sm); }
.preview-play:hover { border-color: var(--accent-strong); background: var(--accent-strong); }
.card-preview::after { position: absolute; inset: auto 14px 12px auto; padding: 5px 8px; border-radius: 99px; background: rgb(255 255 255 / 76%); color: #575a68; content: attr(data-category); font-size: 10px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; pointer-events: none; }
:root[data-ui-mode='dark'] .card-preview::after, :root[data-ui-preset='terminal'] .card-preview::after { background: rgb(25 27 34 / 78%); color: #d7d9e1; }
.card-body { display: grid; gap: 10px; padding: 18px 18px 16px; }
.card-title { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.card-title h3 { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.card-title span { flex: 0 0 auto; color: var(--faint); font-size: 11px; }
.card-body p { min-height: 42px; font-size: 13px; line-height: 1.55; }
.card-meta { display: flex; align-items: center; justify-content: space-between; gap: 12px; color: var(--faint); font-size: 11px; }
.card-meta a { color: var(--stepkit-accent-on-soft, var(--accent-strong)); font-weight: 700; }
.empty-state { grid-column: 1 / -1; padding: 48px 20px; border: 1px dashed var(--line); border-radius: var(--radius-md); background: var(--surface); text-align: center; }
.empty-state p { margin-bottom: 16px; }
.eyebrow { color: var(--stepkit-accent-on-soft, var(--accent-strong)); font-size: 11px; font-weight: 760; letter-spacing: .13em; text-transform: uppercase; }
.detail-header { display: grid; gap: 13px; max-width: 760px; margin-bottom: 28px; }
.detail-header p { font-size: 16px; line-height: 1.65; }
.breadcrumb { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 18px; color: var(--faint); font-size: 12px; }
.breadcrumb a { color: var(--muted); }
.detail-layout { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .75fr); gap: 22px; align-items: start; }
.preview-card, .settings-card, .content-card, .theme-card { border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.preview-card { overflow: hidden; }
.preview-card-head, .card-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 16px 18px; border-bottom: 1px solid var(--line); }
.preview-card-head h2, .card-head h2 { font-size: 14px; letter-spacing: 0; }
.preview-toolbar { display: flex; flex-wrap: wrap; gap: 8px; }
.preview-toolbar label, .theme-fields label { display: grid; gap: 5px; color: var(--faint); font-size: 10px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.preview-toolbar select { min-height: 44px; padding: 0 8px; font-size: 12px; }
.preview-stage { min-height: 420px; padding: 0; background: var(--surface-soft); }
.detail-frame { display: block; width: 100%; height: 420px; border: 0; background: transparent; }
.detail-frame[data-viewport='narrow'] { max-width: 420px; margin: 0 auto; border-inline: 1px solid var(--line); }
.detail-frame[data-viewport='wide'] { height: 330px; }
.preview-card-foot { padding: 12px 18px; border-top: 1px solid var(--line); color: var(--faint); font-size: 12px; }
.settings-card { position: sticky; top: 24px; padding: 18px; }
.settings-card > h2 { margin-bottom: 16px; font-size: 17px; letter-spacing: 0; }
.settings-list { display: grid; gap: 15px; }
.setting { display: grid; gap: 6px; }
.setting-label { color: var(--muted); font-size: 11px; font-weight: 750; letter-spacing: .08em; text-transform: uppercase; }
.setting input, .setting select { width: 100%; }
.setting-check { display: flex; align-items: center; gap: 9px; min-height: 44px; color: var(--muted); }
.setting-check input { width: 18px; height: 18px; accent-color: var(--accent); }
.settings-actions { display: flex; gap: 8px; margin-top: 18px; }
.settings-actions button { flex: 1; }
.button-primary { border-color: var(--accent); background: var(--accent); color: var(--accent-ink); font-weight: 700; }
.button-primary:hover { border-color: var(--accent-strong); background: var(--accent-strong); }
.detail-content { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 22px; margin-top: 22px; }
.content-card { min-width: 0; padding: 20px; }
.content-card.full { grid-column: 1 / -1; }
.content-card h2 { margin-bottom: 14px; font-size: 16px; letter-spacing: 0; }
.content-card p { line-height: 1.65; }
.tab-list { display: flex; gap: 4px; margin-bottom: 14px; }
.tab-list button { min-height: 44px; border: 0; background: transparent; color: var(--muted); font-size: 12px; font-weight: 700; }
.tab-list button[aria-selected='true'] { background: var(--accent-soft); color: var(--stepkit-accent-on-soft, var(--accent-strong)); }
.tab-panel[hidden] { display: none; }
.code-wrap { display: grid; gap: 8px; }
.code-wrap pre, .theme-code { max-width: 100%; padding: 16px; border: 1px solid var(--line); border-radius: var(--radius-md); background: var(--surface-soft); color: var(--muted); }
.copy-code { justify-self: end; min-height: 44px; padding: 0 10px; font-size: 12px; }
.copy-status { min-height: 18px; margin-top: 8px; color: var(--stepkit-accent-on-soft, var(--accent-strong)); font-size: 12px; }
.file-list { display: grid; gap: 8px; margin-top: 14px; }
.file-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 9px 0; border-bottom: 1px solid var(--line); }
.file-row code { min-width: 0; overflow-wrap: anywhere; color: var(--muted); }
.file-row button { min-height: 44px; padding: 0 10px; font-size: 11px; }
.install-row { display: flex; gap: 8px; align-items: stretch; }
.install-row code { flex: 1; min-width: 0; display: flex; align-items: center; overflow-wrap: anywhere; padding: 10px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface-soft); }
.install-row button { min-height: 44px; }
.link-row { display: flex; flex-wrap: wrap; gap: 12px 18px; margin-top: 14px; font-size: 12px; font-weight: 700; }
.link-row a { color: var(--stepkit-accent-on-soft, var(--accent-strong)); }
.data-table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; color: var(--muted); font-size: 12px; }
th, td { padding: 10px 8px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: top; }
th { color: var(--ink); font-weight: 700; }
.bullet-list { display: grid; gap: 8px; padding-left: 18px; color: var(--muted); }
.themes-hero { display: grid; gap: 14px; max-width: 700px; margin-bottom: 28px; }
.themes-hero p { font-size: 16px; line-height: 1.65; }
.theme-workspace { display: grid; grid-template-columns: 280px minmax(0, 1fr); gap: 22px; align-items: start; }
.theme-card { padding: 18px; }
.theme-card h2 { margin-bottom: 16px; font-size: 17px; letter-spacing: 0; }
.theme-fields { display: grid; gap: 13px; }
.theme-fields select { width: 100%; }
.swatches { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; margin-top: 18px; }
.swatch { display: grid; gap: 5px; justify-items: center; padding: 8px 4px; border: 1px solid var(--line); border-radius: var(--radius-sm); background: var(--surface); color: var(--muted); font-size: 10px; }
.swatch-dot { width: 28px; height: 28px; border-radius: 50%; background: var(--swatch); }
.theme-preview-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.theme-preview { overflow: hidden; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); }
.theme-preview iframe { display: block; width: 100%; height: 280px; border: 0; }
.theme-preview p { padding: 12px 16px; font-size: 12px; }
.docs-prose { max-width: 820px; display: grid; gap: 22px; }
.docs-prose > p { max-width: 68ch; font-size: 16px; line-height: 1.65; }
.docs-prose section { display: grid; gap: 12px; padding: 22px; border: 1px solid var(--line); border-radius: var(--radius-lg); background: var(--surface); box-shadow: var(--shadow-sm); }
.docs-prose section h2 { font-size: 18px; letter-spacing: 0; }
.docs-prose pre { padding: 16px; border-radius: var(--radius-md); background: var(--surface-soft); }
.notice { padding: 14px 16px; border: 1px solid color-mix(in srgb, var(--accent) 30%, var(--line)); border-radius: var(--radius-md); background: var(--accent-soft); color: var(--muted); }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0, 0, 0, 0); white-space: nowrap; border: 0; }
.status { min-height: 20px; color: var(--muted); font-size: 12px; }
@media (max-width: 1160px) {
  .catalogue-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .catalogue-hero { grid-template-columns: 1fr; }
  .hero-facts { justify-content: flex-start; }
}
@media (max-width: 900px) {
  .app-shell { display: block; }
  .sidebar { position: fixed; z-index: 50; left: 0; top: 0; width: min(300px, 86vw); transform: translateX(-105%); box-shadow: var(--shadow-md); transition: transform .2s ease; }
  html[data-sidebar-open='true'] .sidebar { transform: translateX(0); }
  .mobile-bar { display: flex; }
  .page-wrap { width: min(100% - 40px, 760px); padding-top: 34px; }
  .site-footer { width: min(100% - 40px, 760px); }
  .detail-layout { grid-template-columns: 1fr; }
  .settings-card { position: static; }
  .theme-workspace { grid-template-columns: 1fr; }
  .theme-card { max-width: none; }
}
@media (max-width: 640px) {
  .page-wrap { width: min(100% - 28px, 560px); padding: 28px 0 56px; }
  .site-footer { width: min(100% - 28px, 560px); }
  .catalogue-grid, .theme-preview-grid, .detail-content { grid-template-columns: 1fr; }
  .library-toolbar { display: grid; grid-template-columns: minmax(0, 1fr) auto; align-items: end; gap: 12px; }
  .search-field { grid-column: 1 / -1; }
  .filter-field { width: auto; min-width: 0; }
  .filter-field select { width: 100%; }
  .view-toggle { align-self: end; }
  .catalogue-hero-copy p, .themes-hero p, .detail-header p { font-size: 14px; }
  .card-preview, .card-preview iframe { min-height: 240px; height: 240px; }
  .preview-stage, .detail-frame { min-height: 350px; height: 350px; }
  .preview-card-head { align-items: flex-start; flex-direction: column; }
  .preview-toolbar { width: 100%; }
  .preview-toolbar label { flex: 1; }
  .install-row { align-items: stretch; flex-direction: column; }
  .install-row button { width: 100%; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}