:root {
  color-scheme: light dark;
  --bg: #d6d6cf;
  --paper: #f2f1ec;
  --paper-soft: #e8e7df;
  --ink: #11110f;
  --muted: #66645d;
  --line: #cbc8bb;
  --brand-accent: #3f403b;
  --brand-accent-deep: #11110f;
  --gold: #d1941f;
  --rust: #b35b5b;
  --white: #ffffff;
  --shadow: 0 22px 70px rgb(17 17 15 / 0.14);
  --radius: 8px;
}

:root[data-theme="light"] {
  color-scheme: light;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d0d0c;
  --paper: #171716;
  --paper-soft: #20201e;
  --ink: #f2f1ec;
  --muted: #a8a69f;
  --line: #30302d;
  --brand-accent: #a8a69f;
  --brand-accent-deep: #f2f1ec;
  --gold: #f1c85f;
  --rust: #d77f7f;
  --white: #11110f;
  --shadow: 0 22px 70px rgb(0 0 0 / 0.32);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #0d0d0c;
    --paper: #171716;
    --paper-soft: #20201e;
    --ink: #f2f1ec;
    --muted: #a8a69f;
    --line: #30302d;
    --brand-accent: #a8a69f;
    --brand-accent-deep: #f2f1ec;
    --gold: #f1c85f;
    --rust: #d77f7f;
    --white: #11110f;
    --shadow: 0 22px 70px rgb(0 0 0 / 0.32);
  }
}

* {
  box-sizing: border-box;
}

* {
  scrollbar-width: thin;
  scrollbar-color: color-mix(in srgb, var(--gold) 72%, var(--line)) transparent;
}

*::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

*::-webkit-scrollbar-track {
  background: transparent;
}

*::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: color-mix(in srgb, var(--gold) 72%, var(--line));
  background-clip: content-box;
}

*::-webkit-scrollbar-thumb:hover {
  background: color-mix(in srgb, var(--gold) 88%, var(--ink));
  background-clip: content-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-height: 100svh;
  margin: 0;
  background: linear-gradient(180deg, color-mix(in srgb, var(--bg) 88%, var(--paper-soft) 12%), var(--bg) 36rem);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
}

a {
  color: inherit;
  text-decoration: none;
}

button,
input {
  font: inherit;
}

.material-symbols-rounded {
  font-family: "Material Symbols Rounded";
  font-weight: normal;
  font-style: normal;
  font-size: 22px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-feature-settings: "liga";
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "liga";
}

.kb-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 10px auto 52px;
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 10px;
  background: var(--paper);
  box-shadow: var(--shadow);
  overflow: clip;
}

.kb-hero {
  position: relative;
  padding: 28px clamp(20px, 5vw, 64px) 0;
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--bg) 82%, var(--paper) 18%), color-mix(in srgb, var(--paper-soft) 88%, var(--gold) 12%));
  color: var(--ink);
}

.kb-hero.is-article-header {
  padding-bottom: 28px;
}

.kb-hero.is-article-header .kb-languages {
  margin-left: auto;
}

.kb-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 1px;
  background: color-mix(in srgb, var(--line) 72%, transparent);
}

.kb-nav {
  display: flex;
  align-items: center;
  gap: 24px;
}

.kb-brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  min-width: 0;
}

.kb-brand img {
  display: block;
  width: 118px;
  height: auto;
  filter: brightness(0) saturate(100%);
}

:root[data-theme="dark"] .kb-brand img {
  filter: brightness(0) invert(1);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .kb-brand img {
    filter: brightness(0) invert(1);
  }
}

.kb-languages {
  display: inline-flex;
  margin-left: auto;
  gap: 4px;
  padding: 4px;
  border: 1px solid color-mix(in srgb, var(--line) 82%, transparent);
  border-radius: 999px;
  background: color-mix(in srgb, var(--paper) 42%, transparent);
}

.kb-languages a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 38px;
  min-height: 30px;
  border-radius: 999px;
  padding: 0 10px;
  font-size: 12px;
  font-weight: 760;
  color: var(--muted);
}

.kb-languages a.is-active {
  background: var(--ink);
  color: var(--paper);
}

.kb-hero-copy {
  max-width: 660px;
  margin: 58px auto 36px;
  text-align: center;
}

.kb-hero-copy h1 {
  margin: 0;
  font-size: clamp(34px, 6vw, 58px);
  line-height: 0.98;
  letter-spacing: 0;
}

.kb-hero-copy span {
  display: block;
  max-width: 560px;
  margin: 18px auto 0;
  color: var(--muted);
  font-size: clamp(15px, 2vw, 18px);
}

.kb-search {
  position: relative;
  z-index: 1;
  display: flex;
  align-items: center;
  gap: 12px;
  width: min(560px, 100%);
  margin: 0 auto;
  transform: translateY(50%);
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 7px;
  padding: 0 18px;
  background: var(--paper);
  color: var(--muted);
  box-shadow: 0 18px 42px rgb(17 17 15 / 0.18);
}

.kb-search span {
  font-size: 24px;
  line-height: 1;
}

.kb-search input {
  width: 100%;
  min-height: 58px;
  border: 0;
  outline: 0;
  background: transparent;
  color: var(--ink);
}

.kb-search:focus-within {
  border-color: color-mix(in srgb, var(--brand-accent) 62%, var(--line));
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--gold) 16%, transparent), 0 18px 42px rgb(17 17 15 / 0.18);
}

.kb-main {
  padding: 76px clamp(20px, 5vw, 64px) 64px;
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 16px;
}

.section-heading h2 {
  margin: 0;
  font-size: 18px;
  line-height: 1.2;
}

.section-heading span {
  color: var(--muted);
  font-size: 13px;
  font-weight: 650;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
}

.category-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: color-mix(in srgb, var(--paper) 86%, #ffffff 14%);
}

.category-card {
  padding: 24px;
}

.category-card.is-hidden {
  display: none;
}

.category-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.category-topline h2 {
  margin: 0;
  font-size: 19px;
  line-height: 1.2;
}

.category-topline span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 30px;
  height: 30px;
  border-radius: 999px;
  background: color-mix(in srgb, var(--gold) 18%, var(--paper-soft));
  color: color-mix(in srgb, var(--gold) 76%, var(--ink));
  font-size: 12px;
  font-weight: 780;
}

.category-card p {
  margin: 10px 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.category-summary {
  display: grid;
  gap: 10px;
  margin: 10px 0 18px;
  color: var(--muted);
  font-size: 14px;
}

.category-summary p {
  margin: 0;
}

.category-card ul {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.category-card li a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  min-height: 40px;
  border-radius: 6px;
  padding: 8px 0;
  color: var(--ink);
  font-size: 14px;
}

.category-card li a:hover,
.category-card li a:focus-visible {
  color: color-mix(in srgb, var(--gold) 82%, var(--ink));
  outline: 0;
}

.category-card li a:hover small,
.category-card li a:focus-visible small {
  color: color-mix(in srgb, var(--gold) 86%, var(--ink));
}

.category-card li a span {
  min-width: 0;
}

.category-card li a small {
  flex: 0 0 auto;
  color: var(--muted);
  font-size: 12px;
}

.search-highlight {
  border-radius: 3px;
  padding: 0 0.12em;
  background: color-mix(in srgb, var(--gold) 34%, transparent);
  color: inherit;
}

.empty-state {
  margin: 34px 0 0;
  border: 1px dashed var(--line);
  border-radius: var(--radius);
  padding: 28px;
  color: var(--muted);
  text-align: center;
}

.article-page {
  display: grid;
  justify-items: center;
  padding: clamp(38px, 7vw, 72px) clamp(20px, 5vw, 64px) 76px;
}

.article-sheet {
  width: min(680px, 100%);
  max-width: 680px;
  padding: clamp(26px, 5vw, 46px);
}

.article-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: start;
  padding-bottom: 24px;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 76%, transparent);
}

.article-mark {
  display: inline-grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border: 1px solid color-mix(in srgb, var(--line) 86%, transparent);
  border-radius: 14px;
  background: color-mix(in srgb, var(--paper-soft) 82%, #ffffff 18%);
  color: var(--ink);
}

.article-mark .material-symbols-rounded {
  font-size: 22px;
}

.article-back-mark {
  color: var(--ink);
  transition: border-color 140ms ease, background 140ms ease, transform 140ms ease;
}

.article-back-mark:hover,
.article-back-mark:focus-visible {
  border-color: color-mix(in srgb, var(--brand-accent) 58%, var(--line));
  background: color-mix(in srgb, var(--paper-soft) 68%, var(--gold) 12%);
  outline: 0;
  transform: translateX(-1px);
}

.article-kicker {
  color: color-mix(in srgb, var(--gold) 74%, var(--ink));
  font-size: 12px;
  font-weight: 780;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-sheet h1 {
  margin: 8px 0 12px;
  font-size: clamp(32px, 5vw, 48px);
  line-height: 1.04;
  letter-spacing: 0;
}

.article-dialog h2 {
  max-width: min(680px, 22ch);
  margin: 12px 0 18px;
  font-size: clamp(34px, 5.6vw, 52px);
  line-height: 0.98;
  letter-spacing: 0;
}

.article-lead {
  max-width: 680px;
  border-left: 3px solid color-mix(in srgb, var(--gold) 82%, var(--ink));
  padding-left: 18px;
  color: color-mix(in srgb, var(--ink) 72%, var(--muted));
  font-size: clamp(18px, 2.1vw, 22px);
  font-weight: 620;
  line-height: 1.55;
  margin: 0;
}

.article-body {
  display: grid;
  gap: 16px;
  padding-top: 24px;
}

.article-body p,
.article-dialog p:not(.article-lead) {
  margin: 0;
  color: color-mix(in srgb, var(--ink) 92%, var(--muted));
  font-size: 17px;
  font-weight: 470;
  line-height: 1.68;
}

.guide-heading {
  margin: 10px 0 0;
  color: var(--ink);
  font-weight: 820;
  letter-spacing: 0;
}

.guide-heading-4 {
  padding-top: 6px;
  font-size: 22px;
  line-height: 1.25;
}

.guide-heading-5 {
  font-size: 17px;
  line-height: 1.35;
}

.guide-heading-6 {
  color: color-mix(in srgb, var(--ink) 78%, var(--muted));
  font-size: 15px;
  line-height: 1.4;
}

.guide-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding-left: 1.25rem;
  color: color-mix(in srgb, var(--ink) 92%, var(--muted));
  font-size: 17px;
  line-height: 1.6;
}

.article-body code,
.article-dialog code,
.category-card code {
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 5px;
  padding: 0.08em 0.32em;
  background: color-mix(in srgb, var(--paper-soft) 78%, transparent);
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.88em;
}

.guide-rule {
  width: 100%;
  height: 1px;
  margin: 10px 0;
  border: 0;
  background: color-mix(in srgb, var(--line) 82%, transparent);
}

.guide-image {
  display: grid;
  justify-items: start;
  margin: 4px 0;
  max-width: 100%;
}

.guide-image img {
  display: block;
  width: auto;
  max-width: 100%;
  height: auto;
  max-height: 520px;
  border: 1px solid color-mix(in srgb, var(--line) 78%, transparent);
  border-radius: 8px;
  object-fit: contain;
  background: color-mix(in srgb, var(--paper-soft) 56%, transparent);
}

.article-dialog {
  width: min(840px, calc(100% - 24px));
  max-height: calc(100svh - 24px);
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 0;
  background: var(--paper);
  color: var(--ink);
  box-shadow: 0 30px 90px rgb(0 0 0 / 0.34);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.article-dialog::backdrop {
  background: rgb(17 17 15 / 0.56);
  backdrop-filter: blur(4px);
}

.article-dialog article {
  padding: clamp(28px, 5vw, 54px);
  padding-top: clamp(38px, 5vw, 58px);
}

.dialog-close {
  position: sticky;
  top: 14px;
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  z-index: 2;
  margin: 14px 14px -52px calc(100% - 52px);
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-soft);
  color: var(--ink);
  cursor: pointer;
}

.dialog-close .material-symbols-rounded {
  font-size: 20px;
}

.footer-logo {
  --footer-ink: var(--text, var(--ink, #171717));
  --footer-muted: var(--muted, #6a6a65);
  display: grid;
  grid-template-columns: minmax(220px, 1.2fr) repeat(2, minmax(160px, 0.7fr));
  gap: 28px;
  width: min(1120px, calc(100% - 32px));
  margin: 42px auto 0;
  padding: 28px 0 34px;
  border-top: 1px solid var(--line);
  color: var(--footer-muted);
  font-size: 12px;
  line-height: 1.45;
  text-align: left;
}

.footer-logo b {
  font-weight: 650;
}

.footer-company-block {
  display: grid;
  align-content: start;
  gap: 5px;
  min-width: 0;
}

.footer-company-block p {
  margin: 0;
}

.footer-wordmark {
  width: fit-content;
  color: var(--footer-ink);
  font-size: 18px;
  font-weight: 760;
  line-height: 1;
  text-decoration: none;
}

.footer-links {
  display: grid;
  align-content: start;
  justify-content: start;
  gap: 7px;
  margin: 0;
  color: var(--footer-muted);
  font-size: 12px;
  font-weight: 650;
}

.footer-links h2 {
  margin: 0 0 4px;
  color: var(--footer-ink);
  font-size: 11px;
  font-weight: 780;
  letter-spacing: 0.08em;
  line-height: 1.2;
  text-transform: uppercase;
}

.footer-links a {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  width: fit-content;
  color: color-mix(in srgb, var(--footer-ink) 62%, var(--footer-muted));
  text-decoration: none;
}

.footer-external-link {
  display: inline-flex;
  align-items: center;
  gap: 3px;
}

.footer-external-link .material-symbols-rounded {
  font-size: 13px;
}

.footer-links a:hover,
.footer-links a:focus-visible {
  color: var(--footer-ink);
}

.footer-legal-links {
  gap: 6px;
}

@media (max-width: 760px) {
  .footer-logo {
    grid-template-columns: 1fr 1fr;
    gap: 24px 14px;
    font-size: 13px;
  }

  .footer-company-block {
    grid-column: 1 / -1;
  }

  .footer-links {
    width: 100%;
    gap: 7px;
  }

  .footer-links a {
    min-height: 42px;
    width: 100%;
    max-width: none;
    padding: 10px 0;
    border-bottom: 1px solid color-mix(in srgb, var(--line) 72%, transparent);
    font-size: 14px;
    line-height: 1.25;
  }

  .footer-links a:hover,
  .footer-links a:focus-visible {
    border-bottom-color: color-mix(in srgb, var(--footer-ink) 38%, var(--line));
  }

  .footer-external-link .material-symbols-rounded {
    font-size: 16px;
  }
}

@media (max-width: 480px) {
  .footer-logo {
    grid-template-columns: 1fr;
    width: calc(100% - 28px);
    gap: 22px;
  }
}

:root[data-theme="dark"] .footer-logo {
  color: color-mix(in srgb, var(--footer-muted) 86%, transparent);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .footer-logo {
    color: color-mix(in srgb, var(--footer-muted) 86%, transparent);
  }
}

.article-dialog [data-dialog-body] {
  display: grid;
  gap: 16px;
  max-width: 680px;
  margin-top: 22px;
}

.article-dialog p:not(.article-lead) {
  color: color-mix(in srgb, var(--ink) 58%, var(--muted));
  font-size: clamp(18px, 2.1vw, 22px);
  line-height: 1.55;
}

@media (max-width: 760px) {
  .kb-shell {
    width: 100%;
    margin: 0;
    border-right-width: 0;
    border-left-width: 0;
    border-radius: 0;
  }

  .kb-hero {
    padding: 20px 18px 0;
  }

  .kb-hero.is-article-header {
    padding-bottom: 20px;
  }

  .kb-nav {
    flex-wrap: wrap;
    gap: 14px;
  }

  .kb-brand img {
    width: 108px;
  }

  .kb-languages {
    margin-left: auto;
  }

  .kb-hero-copy {
    margin: 42px auto 28px;
    text-align: left;
  }

  .kb-search {
    transform: translateY(42%);
  }

  .kb-main,
  .article-page {
    padding: 64px 18px 58px;
  }

  .article-page {
    padding-top: 34px;
  }

  .article-sheet h1 {
    font-size: clamp(32px, 10vw, 46px);
  }

  .section-heading {
    align-items: start;
    flex-direction: column;
    gap: 4px;
  }

  .category-grid {
    grid-template-columns: 1fr;
  }

  .category-card {
    padding: 20px;
  }

  .article-dialog {
    width: min(840px, calc(100% - 5px));
    max-height: calc(100svh - 5px);
  }

  .article-dialog article {
    padding: clamp(28px, 5vw, 54px);
    padding-top: clamp(38px, 5vw, 58px);
  }

  .dialog-close {
    top: 14px;
    margin: 14px 14px -52px calc(100% - 52px);
  }
}

@media (max-width: 430px) {
  .kb-shell {
    width: 100%;
    min-height: 100svh;
    margin: 0;
    border-width: 0;
    border-radius: 0;
  }

  .kb-hero-copy h1 {
    font-size: 36px;
  }

  .kb-search input {
    min-height: 54px;
  }
}