*, *::before, *::after { box-sizing: border-box; }

:root {
  --font-display: "Bricolage Grotesque", ui-sans-serif, system-ui, sans-serif;
  --font-file: ui-monospace, SFMono-Regular, Menlo, monospace;
  --analytics-primary: #f59e0b;
  --analytics-secondary: #b45309;
  --desk: #120b06;
  --lamp: #3a2208;
  --bone: #f3ead8;
  --ash: #9a8b76;
  --rule: #3a2a16;
  --page-bg: var(--desk);
  --text: var(--bone);
  --text-muted: var(--ash);
  --surface: #1c1208;
  --surface-border: var(--rule);
  --surface-divider: #2a1c0e;

  --vk-font-display: var(--font-display);
  --vk-font-family: var(--font-display);
  --vk-navbar-max-width: 72rem;
}

:root,
:root[data-vk-theme="dark"],
html[data-vk-theme="dark"] {
  --vk-color-primary: #f59e0b;
  --vk-color-primary-hover: #fbbf24;
  --vk-color-primary-active: #b45309;
  --vk-color-primary-light: color-mix(in srgb, #f59e0b 35%, transparent);
  --vk-color-primary-subtle: #2a1808;
  --vk-color-on-primary: #1c1003;
}

@media (prefers-color-scheme: dark) {
  :root:not([data-vk-theme="light"]) {
    --vk-color-primary: #f59e0b;
    --vk-color-primary-hover: #fbbf24;
    --vk-color-primary-active: #b45309;
    --vk-color-primary-light: color-mix(in srgb, #f59e0b 35%, transparent);
    --vk-color-primary-subtle: #2a1808;
    --vk-color-on-primary: #1c1003;
  }
}

.vk-btn:not(.vk-btn--secondary):not(.vk-btn--ghost):not(.vk-btn--danger) {
  background: var(--analytics-primary);
  color: #1c1003;
}

.vk-btn:not(.vk-btn--secondary):not(.vk-btn--ghost):not(.vk-btn--danger):hover {
  background: #fbbf24;
}

html, body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 520;
  line-height: 1.5;
  color: var(--bone);
  background:
    radial-gradient(ellipse 58% 46% at 8% -12%, var(--lamp), transparent 58%),
    var(--desk);
}

a {
  color: inherit;
}

code, .mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.88em;
}

.page {
  width: 100%;
  max-width: 72rem;
  margin: 0 auto;
  padding: 0 1.5rem 3.5rem;
}

.brand-slot {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.brand-slot svg {
  width: 2.1rem;
  height: 2.1rem;
  display: block;
  filter: drop-shadow(0 8px 18px color-mix(in srgb, var(--analytics-primary) 35%, transparent));
}

.nav-link {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.92rem;
  padding: 0.35rem 0.55rem;
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--text);
}

.nav-link[aria-current="page"] {
  color: var(--analytics-primary);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 2rem;
  align-items: center;
  padding: clamp(2.5rem, 6vw, 4.5rem) 0 2rem;
}

.eyebrow {
  margin: 0 0 0.7rem;
  font-size: 1rem;
  font-weight: 650;
  color: var(--analytics-primary);
}

.hero h1,
.section h2,
.close h2,
.docs-body h1,
.docs-body h2,
.start-body h1,
.start-body h2 {
  font-family: var(--font-display);
  letter-spacing: -0.035em;
  line-height: 1.08;
}

.hero h1 {
  margin: 0 0 1.15rem;
  font-size: clamp(2.6rem, 6vw + 0.4rem, 4.6rem);
  font-weight: 800;
  max-width: 11ch;
}

.lede {
  margin: 0 0 1.75rem;
  max-width: 40rem;
  font-size: 1.15rem;
  color: var(--text-muted);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-bottom: 1.25rem;
}

.install-cmd {
  margin: 0;
  padding: 1rem 1.15rem;
  border-radius: 0.85rem;
  border: 1px solid var(--surface-border);
  background: color-mix(in srgb, var(--page-bg) 70%, var(--surface));
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #c7d2e0;
  max-width: 42rem;
}

.sheet {
  border: 1px solid color-mix(in srgb, var(--analytics-primary) 22%, var(--surface-border));
  border-radius: 1.25rem;
  overflow: hidden;
  background:
    linear-gradient(
      180deg,
      color-mix(in srgb, var(--analytics-primary) 8%, var(--surface)),
      var(--surface) 32%
    );
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--analytics-primary) 8%, transparent) inset,
    0 28px 60px rgb(0 0 0 / 28%);
}

.sheet-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem 1.2rem 0.85rem;
  border-bottom: 1px solid var(--surface-divider);
}

.sheet-head p {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--analytics-primary) 70%, var(--text-muted));
}

.sheet ol {
  list-style: none;
  margin: 0;
  padding: 0.35rem 0;
}

.sheet li a,
.sheet li .sheet-row {
  display: grid;
  grid-template-columns: 2.4rem minmax(0, 1fr);
  gap: 0.65rem;
  align-items: baseline;
  padding: 0.7rem 1.2rem;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--surface-divider) 80%, transparent);
}

.sheet li:last-child a,
.sheet li:last-child .sheet-row {
  border-bottom: none;
}

.sheet li a:hover {
  background: color-mix(in srgb, var(--analytics-primary) 7%, transparent);
}

.sheet-n {
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--analytics-primary);
}

.sheet-name {
  display: block;
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.86rem;
  color: var(--text);
}

.sheet-desc {
  display: block;
  margin-top: 0.2rem;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.section {
  padding: 2.5rem 0 0.5rem;
}

.section h2 {
  margin: 0 0 0.75rem;
  font-size: clamp(1.5rem, 2vw + 0.8rem, 2.1rem);
  font-weight: 750;
}

.section-lede {
  margin: 0 0 1.5rem;
  max-width: 40rem;
  color: var(--text-muted);
}

.split {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
}

.panel {
  padding: 1.35rem 1.4rem;
  border: 1px solid var(--surface-border);
  border-radius: 1rem;
  background: var(--surface);
}

.panel h3 {
  margin: 0 0 0.5rem;
  font-family: var(--font-display);
  font-size: 1.15rem;
}

.panel p {
  margin: 0;
  color: var(--text-muted);
}

.skill-index {
  list-style: none;
  margin: 0;
  padding: 0;
  border: 1px solid var(--surface-border);
  border-radius: 1.1rem;
  overflow: hidden;
  background: var(--surface);
}

.skill-index li + li {
  border-top: 1px solid var(--surface-divider);
}

.skill-index a {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr);
  gap: 0.85rem;
  padding: 1rem 1.2rem;
  text-decoration: none;
}

.skill-index a:hover {
  background: color-mix(in srgb, var(--analytics-primary) 7%, transparent);
}

.skill-index .sheet-name {
  font-size: 0.95rem;
}

.close {
  margin-top: 3rem;
  padding: 2rem 1.6rem;
  border-radius: 1.25rem;
  border: 1px solid color-mix(in srgb, var(--analytics-primary) 35%, var(--surface-border));
  background:
    radial-gradient(ellipse 80% 80% at 0% 0%, color-mix(in srgb, var(--analytics-primary) 18%, transparent), transparent 55%),
    var(--surface);
}

.close h2 {
  margin: 0 0 0.6rem;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
}

.close p {
  margin: 0 0 1.2rem;
  max-width: 36rem;
  color: var(--text-muted);
}

.site-footer {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-top: 3rem;
  padding-top: 1.4rem;
  border-top: 1px solid var(--surface-divider);
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-links a {
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--analytics-primary);
}

.docs-layout,
.start-layout {
  display: grid;
  grid-template-columns: 14rem minmax(0, 1fr);
  gap: 2rem;
  padding-top: 2rem;
}

.side-nav {
  position: sticky;
  top: 4.5rem;
  align-self: start;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.side-nav a {
  text-decoration: none;
  color: var(--text-muted);
  font-size: 0.92rem;
  padding: 0.25rem 0;
}

.side-nav a:hover,
.side-nav a[aria-current="page"] {
  color: var(--text);
}

.docs-body h1,
.start-body h1 {
  margin: 0 0 0.85rem;
  font-size: clamp(1.9rem, 3vw, 2.6rem);
  font-weight: 800;
}

.docs-body h2,
.start-body h2 {
  margin: 2rem 0 0.65rem;
  font-size: 1.35rem;
  font-weight: 750;
}

.docs-body p,
.start-body p,
.docs-body li,
.start-body li,
.docs-body dd {
  color: var(--text-muted);
}

.docs-body a,
.start-body a {
  color: var(--text);
}

.docs-body a:hover,
.start-body a:hover {
  color: var(--analytics-primary);
}

.docs-body p,
.start-body p {
  margin: 0 0 0.9rem;
  max-width: 42rem;
}

.docs-body ul,
.start-body ul,
.docs-body ol,
.start-body ol {
  margin: 0 0 1.1rem;
  padding-left: 1.2rem;
  max-width: 42rem;
}

.prose-wide {
  max-width: 46rem;
}

pre, .code-block {
  margin: 0 0 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: 0.85rem;
  border: 1px solid var(--surface-border);
  background: color-mix(in srgb, var(--page-bg) 70%, var(--surface));
  overflow-x: auto;
}

pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: #c7d2e0;
}

.expect {
  max-width: 46rem;
}

.ref-fields {
  margin: 0 0 1.25rem;
  max-width: 46rem;
}

.ref-fields div {
  display: grid;
  grid-template-columns: 13rem minmax(0, 1fr);
  gap: 0.75rem;
  padding: 0.65rem 0;
  border-bottom: 1px solid var(--surface-divider);
}

.ref-fields dt {
  font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
  font-size: 0.82rem;
  color: var(--text);
}

.ref-fields dd {
  margin: 0;
}

.skill-source {
  max-width: none;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.related-list a {
  color: var(--text);
}

.related-list a:hover {
  color: var(--analytics-primary);
}

@media (max-width: 900px) {
  .hero,
  .split,
  .ref-fields div,
  .system ul {
    grid-template-columns: 1fr;
  }

  .docs-layout,
  .start-layout {
    grid-template-columns: 1fr;
  }

  .side-nav {
    position: static;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.75rem 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--surface-divider);
  }
}

.hero.hero-copy,
.hero.hero-system {
  display: block;
}

.hero.hero-copy h1,
.hero.hero-system h1 {
  max-width: 16ch;
}

.hero-system .hero-copy {
  max-width: 38rem;
}

.system {
  margin: 2.75rem 0 0;
}

.system ul {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 2rem;
  margin: 0;
  padding: 1.35rem 0 0;
  border-top: 1px solid var(--analytics-primary);
}

.system strong {
  display: block;
  margin-bottom: 0.45rem;
  font-size: 1.45rem;
  font-weight: 750;
}

.system li p {
  margin: 0;
  max-width: 28ch;
  color: var(--ash);
  font-size: 0.98rem;
}

.system figcaption {
  margin: 1.1rem 0 0;
  font-size: 1.15rem;
  font-weight: 650;
  color: var(--analytics-primary);
}

.facts,
.how-cards,
.roles,
.values {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0.85rem;
}

.how-cards,
.roles,
.values {
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 1.75rem;
}

.fact,
.how-card,
.value {
  padding: 1.1rem 1.2rem;
  border: 1px solid var(--surface-border);
  border-radius: 1rem;
  background: color-mix(in srgb, var(--surface) 88%, transparent);
}

.value vk-icon {
  color: var(--analytics-primary);
  margin-bottom: 0.55rem;
}

.how-card {
  display: block;
  text-decoration: none;
  color: inherit;
}

.how-card:hover {
  border-color: color-mix(in srgb, var(--analytics-primary) 35%, var(--surface-border));
}

.fact .kicker,
.how-card .kicker,
.value .kicker {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--analytics-primary);
}

.fact p,
.how-card p,
.value p {
  margin: 0.35rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.lede-guide {
  margin: 0 0 1.75rem;
  max-width: 46rem;
  font-size: 1.15rem;
  color: var(--text-muted);
}

vk-mermaid {
  display: block;
  margin: 1.25rem 0 1.75rem;
  max-width: 46rem;
}

@media (max-width: 900px) {
  .facts,
  .how-cards,
  .roles,
  .values {
    grid-template-columns: 1fr;
  }
}

.store {
  --store-ink: #d7c4a0;
  position: relative;
  min-height: 22rem;
  padding: 1.15rem 1.15rem 1.3rem 1.35rem;
  border: 1px solid var(--rule);
  background:
    linear-gradient(90deg, #2a1808 0 0.7rem, transparent 0.7rem),
    repeating-linear-gradient(
      180deg,
      transparent,
      transparent 2.05rem,
      color-mix(in srgb, var(--rule) 55%, transparent) 2.05rem,
      color-mix(in srgb, var(--rule) 55%, transparent) 2.1rem
    ),
    #1a1006;
  box-shadow:
    0.55rem 0.7rem 0 -0.2rem #0a0603,
    0 28px 50px rgb(0 0 0 / 40%);
}

.store::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 0.7rem;
  background:
    linear-gradient(#f59e0b, #b45309);
}

.store-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 0 0.85rem 0.35rem;
  font-family: var(--font-file);
  font-size: 0.72rem;
  color: var(--ash);
}

.store-head strong {
  font-family: var(--font-display);
  font-size: 0.95rem;
  font-weight: 750;
  color: var(--bone);
}

.store-rows {
  list-style: none;
  margin: 0;
  padding: 0;
}

.store-rows li {
  display: grid;
  grid-template-columns: 4.2rem 1fr auto;
  gap: 0.7rem;
  align-items: baseline;
  min-height: 2.1rem;
  padding: 0.35rem 0.2rem 0.35rem 0.45rem;
  font-family: var(--font-file);
  font-size: 0.82rem;
  color: var(--store-ink);
}

.store-rows .kind {
  color: var(--analytics-primary);
}

.store-rows .qty {
  color: var(--ash);
}

.store-rows li.writing .qty::after {
  content: "▍";
  margin-left: 0.15rem;
  color: var(--analytics-primary);
  animation: caret 1.1s steps(1) infinite;
}

@keyframes caret {
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .store-rows li.writing .qty::after {
    animation: none;
  }
}

.rail {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  margin: 2.25rem 0 0;
  border-top: 1px solid var(--rule);
}

.rail article {
  padding: 1.15rem 1.2rem 0 0;
}

.rail article + article {
  padding-left: 1.2rem;
  border-left: 1px solid var(--rule);
}

.rail .kicker {
  margin: 0;
  font-weight: 750;
  color: var(--bone);
}

.rail p {
  margin: 0.4rem 0 0;
  color: var(--ash);
  font-size: 0.95rem;
}

.manifesto {
  list-style: none;
  margin: 0;
  padding: 0;
}

.manifesto li {
  display: grid;
  grid-template-columns: 13rem minmax(0, 1fr);
  gap: 1.25rem;
  padding: 1.15rem 0;
  border-top: 1px solid var(--rule);
}

.manifesto li:last-child {
  border-bottom: 1px solid var(--rule);
}

.manifesto h3 {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 750;
  color: var(--analytics-primary);
}

.manifesto p {
  margin: 0;
  max-width: 40rem;
  color: var(--ash);
}

.facing {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.facing article {
  padding: 1.25rem 1.4rem 1.35rem 0;
}

.facing article + article {
  padding-left: 1.4rem;
  border-left: 1px solid var(--rule);
}

.facing h3 {
  margin: 0 0 0.45rem;
  font-size: 1.35rem;
  font-weight: 750;
}

.facing p {
  margin: 0;
  color: var(--ash);
}

.pipe {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: 0.65rem;
  align-items: center;
  margin-top: 1.25rem;
}

.pipe span {
  padding: 0.85rem 0.95rem;
  border: 1px solid var(--rule);
  background: #1a1006;
  font-size: 0.95rem;
}

.pipe-join {
  height: 1px;
  padding: 0;
  border: 0;
  background: var(--analytics-primary);
}

.skill-row {
  display: grid;
  grid-template-columns: 16rem minmax(0, 1fr);
  gap: 1.25rem;
  align-items: baseline;
  padding: 1.1rem 0;
  border-top: 1px solid var(--rule);
  text-decoration: none;
}

.skill-row:last-of-type {
  border-bottom: 1px solid var(--rule);
}

.skill-row code {
  font-size: 1rem;
  color: var(--analytics-primary);
}

.skill-row:hover code {
  color: #fbbf24;
}

.skill-row p {
  margin: 0;
  color: var(--ash);
}

a:focus-visible,
.nav-link:focus-visible,
.vk-btn:focus-visible {
  outline: 2px solid var(--analytics-primary);
  outline-offset: 3px;
}

@media (max-width: 900px) {
  .rail,
  .facing,
  .manifesto li,
  .skill-row,
  .pipe {
    grid-template-columns: 1fr;
  }

  .rail article + article,
  .facing article + article {
    padding-left: 0;
    border-left: none;
    border-top: 1px solid var(--rule);
  }

  .pipe-join {
    display: none;
  }
}