:root {
  color-scheme: dark;
  --kb-background: #0b1422;
  --kb-surface-lowest: #060e1c;
  --kb-surface-low: #131c2a;
  --kb-surface: #17202e;
  --kb-surface-high: #222a39;
  --kb-surface-variant: #2c3544;
  --kb-glass: rgba(8, 17, 31, 0.7);
  --kb-stroke: rgba(255, 255, 255, 0.12);
  --kb-stroke-soft: rgba(255, 255, 255, 0.08);
  --kb-text: #dae3f7;
  --kb-muted: #c4c5d5;
  --kb-muted-soft: rgba(196, 197, 213, 0.72);
  --kb-primary: #b7c4ff;
  --kb-primary-fixed: #dce1ff;
  --kb-electric: #3d7bff;
  --kb-on-primary: #002680;
  --kb-error: #ffb4ab;
  --kb-container: 1280px;
  --kb-gutter: 24px;
  --kb-section: 160px;
  --kb-stack-sm: 8px;
  --kb-stack-md: 16px;
  --kb-stack-lg: 32px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
  letter-spacing: 0;
}

html {
  min-width: 320px;
  scroll-behavior: smooth;
  background: var(--kb-background);
}

body.knowledge-shell {
  min-width: 320px;
  min-height: 100dvh;
  margin: 0;
  overflow-x: clip;
  color: var(--kb-text);
  background: var(--kb-background);
  font-family: Inter, ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

button,
input,
select,
summary {
  font: inherit;
}

button,
summary,
a {
  -webkit-tap-highlight-color: transparent;
}

.material-symbols-outlined {
  font-family: "Material Symbols Outlined";
  font-weight: normal;
  font-style: normal;
  font-size: 20px;
  line-height: 1;
  display: inline-block;
  text-transform: none;
  letter-spacing: normal;
  word-wrap: normal;
  white-space: nowrap;
  direction: ltr;
  font-feature-settings: "liga";
  -webkit-font-feature-settings: "liga";
  font-variation-settings: "FILL" 0, "wght" 400, "GRAD" 0, "opsz" 24;
}

.knowledge-bg {
  position: fixed;
  inset: 0;
  z-index: -3;
  background: linear-gradient(180deg, #0b1422 0%, #08111f 52%, #060e1c 100%);
}

.knowledge-topnav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 50;
  width: 100%;
  border-bottom: 1px solid var(--kb-stroke);
  background: var(--kb-glass);
  box-shadow: 0 0 20px rgba(61, 123, 255, 0.1);
  backdrop-filter: blur(28px);
}

.knowledge-topnav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: min(var(--kb-container), calc(100% - 64px));
  height: 80px;
  margin: 0 auto;
  gap: 28px;
}

.knowledge-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  min-width: max-content;
  font-family: Sora, Inter, sans-serif;
  font-size: 32px;
  line-height: 40px;
  font-weight: 700;
  color: var(--kb-text);
}

.knowledge-brand img {
  width: 34px;
  height: 34px;
  border: 1px solid rgba(183, 196, 255, 0.24);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.08);
  object-fit: contain;
}

.knowledge-topnav__links,
.knowledge-topnav__actions {
  display: inline-flex;
  align-items: center;
  gap: 24px;
}

.knowledge-topnav__links {
  margin-left: auto;
}

.knowledge-topnav__links a,
.knowledge-nav__link--knowledge {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  border-bottom: 2px solid transparent;
  color: var(--kb-muted);
  font-size: 16px;
  font-weight: 500;
  transition: color 180ms ease, border-color 180ms ease;
  white-space: nowrap;
}

.knowledge-topnav__links a:hover,
.knowledge-nav__link--knowledge:hover,
.knowledge-nav__link--knowledge.is-active {
  border-bottom-color: var(--kb-primary);
  color: var(--kb-primary);
}

.knowledge-language {
  min-height: 40px;
  padding: 0 34px 0 14px;
  border: 1px solid var(--kb-stroke);
  border-radius: 8px;
  color: var(--kb-text);
  background: rgba(255, 255, 255, 0.08);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 16px;
  font-weight: 500;
  text-transform: uppercase;
}

.knowledge-language option {
  color: var(--kb-text);
  background: var(--kb-surface-low);
}

.knowledge-app-button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 22px;
  border: 1px solid transparent;
  border-radius: 8px;
  color: var(--kb-on-primary);
  background: linear-gradient(90deg, var(--kb-primary), var(--kb-primary-fixed));
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 16px;
  font-weight: 700;
  text-transform: uppercase;
  transition: transform 160ms ease, box-shadow 160ms ease;
}

.knowledge-app-button:hover {
  box-shadow: 0 0 15px rgba(61, 123, 255, 0.3);
}

.knowledge-app-button:active {
  transform: scale(0.95);
}

.knowledge-main {
  position: relative;
  z-index: 1;
  width: min(var(--kb-container), calc(100% - 64px));
  margin: 0 auto;
}

.knowledge-hub {
  padding: 120px 0 var(--kb-section);
}

.knowledge-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 360px;
  gap: 56px;
  align-items: start;
  margin-bottom: 32px;
}

.knowledge-eyebrow,
.knowledge-rail__label,
.article-kicker,
.knowledge-card__meta,
.knowledge-card__tags,
.article-meta,
.article-breadcrumb,
.article-toc h3,
.article-related__card span {
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.knowledge-eyebrow {
  display: inline-flex;
  margin-bottom: 16px;
  color: var(--kb-primary);
}

.knowledge-hero h1 {
  max-width: 920px;
  margin: 0 0 16px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: clamp(48px, 7vw, 80px);
  line-height: 1.1;
  font-weight: 800;
}

.knowledge-hero p {
  max-width: 760px;
  margin: 0 0 32px;
  color: var(--kb-muted);
  font-size: 18px;
  line-height: 28px;
}

.knowledge-search {
  position: relative;
  width: min(100%, 672px);
  margin-bottom: 32px;
}

.knowledge-search .material-symbols-outlined {
  position: absolute;
  top: 50%;
  left: 16px;
  color: var(--kb-primary);
  transform: translateY(-50%);
  pointer-events: none;
}

.knowledge-search__input {
  width: 100%;
  min-height: 62px;
  padding: 0 18px 0 52px;
  border: 1px solid rgba(183, 196, 255, 0.64);
  border-radius: 8px;
  outline: none;
  color: var(--kb-text);
  background: var(--kb-surface);
  box-shadow: 0 0 20px rgba(61, 123, 255, 0.15);
  font-size: 18px;
  line-height: 28px;
  transition: border-color 180ms ease, box-shadow 180ms ease, background 180ms ease;
}

.knowledge-search__input::placeholder {
  color: rgba(196, 197, 213, 0.58);
}

.knowledge-search__input:focus {
  border-color: rgba(61, 123, 255, 0.72);
  box-shadow: 0 0 0 1px rgba(61, 123, 255, 0.3), 0 0 26px rgba(61, 123, 255, 0.22);
}

.knowledge-filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  max-width: 940px;
  margin-bottom: 28px;
}

.knowledge-filter,
.knowledge-reset {
  min-height: 36px;
  border: 1px solid var(--kb-stroke);
  border-radius: 999px;
  background: var(--kb-glass);
  backdrop-filter: blur(14px);
  cursor: pointer;
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 16px;
  font-weight: 700;
  transition: border-color 180ms ease, color 180ms ease, background 180ms ease, transform 160ms ease;
}

.knowledge-filter {
  padding: 0 16px;
  color: var(--kb-muted);
}

.knowledge-filter:hover,
.knowledge-filter.is-active {
  border-color: var(--kb-primary);
  color: var(--kb-primary);
  background: rgba(183, 196, 255, 0.1);
  box-shadow: 0 0 10px rgba(61, 123, 255, 0.1);
}

.knowledge-filter:active,
.knowledge-reset:active {
  transform: scale(0.98);
}

.knowledge-reset {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: 16px;
  padding: 0 2px 0 16px;
  border-color: transparent;
  color: var(--kb-error);
  background: transparent;
}

.knowledge-reset .material-symbols-outlined {
  font-size: 16px;
}

.knowledge-results-count {
  padding-bottom: 8px;
  border-bottom: 1px solid var(--kb-stroke);
  color: var(--kb-muted);
  font-size: 16px;
  line-height: 24px;
}

.knowledge-rail {
  display: grid;
  gap: 18px;
}

.knowledge-rail > div {
  padding: 24px;
  border: 1px solid var(--kb-stroke);
  border-radius: 12px;
  background: var(--kb-glass);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.18);
  backdrop-filter: blur(18px);
}

.knowledge-rail__label {
  display: block;
  margin-bottom: 10px;
  color: var(--kb-primary);
}

.knowledge-rail strong {
  display: block;
  margin-bottom: 10px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: 22px;
  line-height: 30px;
}

.knowledge-rail p {
  margin: 0;
  color: var(--kb-muted);
  font-size: 14px;
  line-height: 22px;
}

.knowledge-rail a {
  display: block;
  padding: 10px 0;
  border-top: 1px solid var(--kb-stroke-soft);
  color: var(--kb-muted);
  font-size: 14px;
  line-height: 20px;
  transition: color 180ms ease;
}

.knowledge-rail a:hover {
  color: var(--kb-primary);
}

.knowledge-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

.knowledge-card {
  display: block;
  padding: 26px;
  border: 1px solid var(--kb-stroke);
  border-radius: 12px;
  color: var(--kb-text);
  background: var(--kb-glass);
  backdrop-filter: blur(18px);
  transition: border-color 220ms ease, background 220ms ease, transform 220ms ease, box-shadow 220ms ease;
}

.knowledge-card:hover {
  border-color: rgba(183, 196, 255, 0.5);
  background: rgba(44, 53, 68, 0.3);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.24);
  transform: translateY(-1px);
}

.knowledge-card[hidden] {
  display: none;
}

.knowledge-card__meta,
.knowledge-card__tags {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  color: rgba(196, 197, 213, 0.66);
}

.knowledge-card__meta span:first-child {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--kb-primary);
}

.knowledge-card__meta .material-symbols-outlined {
  font-size: 16px;
}

.knowledge-card h2 {
  margin: 18px 0 10px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.25;
  font-weight: 700;
  transition: color 180ms ease;
}

.knowledge-card:hover h2 {
  color: var(--kb-primary);
}

.knowledge-card p {
  max-width: 980px;
  margin: 0;
  color: var(--kb-muted);
  font-size: 16px;
  line-height: 24px;
}

.knowledge-card__tags {
  justify-content: flex-start;
  margin-top: 18px;
}

.knowledge-card__tags span {
  min-height: 28px;
  display: inline-flex;
  align-items: center;
  padding: 0 10px;
  border: 1px solid var(--kb-stroke);
  border-radius: 999px;
  color: var(--kb-muted-soft);
  background: rgba(19, 28, 42, 0.56);
}

.knowledge-article {
  padding: 128px 0 var(--kb-section);
}

.article-header {
  max-width: 1080px;
  margin-bottom: 32px;
}

.article-breadcrumb {
  margin-bottom: 16px;
  color: var(--kb-muted-soft);
}

.article-breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.article-breadcrumb a {
  transition: color 180ms ease;
}

.article-breadcrumb a:hover,
.article-breadcrumb li[aria-current="page"] {
  color: var(--kb-primary);
}

.article-breadcrumb span {
  color: var(--kb-stroke);
}

.article-kicker {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
}

.article-kicker span {
  padding: 5px 12px;
  border: 1px solid var(--kb-stroke);
  border-radius: 999px;
  color: var(--kb-primary);
  background: var(--kb-glass);
  backdrop-filter: blur(14px);
}

.article-header h1 {
  max-width: 1120px;
  margin: 0 0 16px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: clamp(48px, 7vw, 80px);
  line-height: 1.12;
  font-weight: 800;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
  border-top: 1px solid var(--kb-stroke);
  border-bottom: 1px solid var(--kb-stroke);
  color: rgba(196, 197, 213, 0.8);
}

.article-meta span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.article-meta > span:nth-child(2),
.article-meta > span:nth-child(4) {
  width: 4px;
  height: 4px;
  border-radius: 999px;
  background: var(--kb-stroke);
}

.article-meta .material-symbols-outlined {
  font-size: 16px;
}

.article-answer {
  position: relative;
  max-width: 1080px;
  margin-bottom: 64px;
  padding: 32px 40px;
  overflow: hidden;
  border: 1px solid var(--kb-stroke);
  border-radius: 12px;
  background: var(--kb-glass);
  backdrop-filter: blur(28px);
}

.article-answer::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(183, 196, 255, 0.1), transparent 62%);
  pointer-events: none;
}

.article-answer > * {
  position: relative;
  z-index: 1;
}

.article-answer div {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
  color: var(--kb-primary);
  font-family: "JetBrains Mono", monospace;
  font-size: 12px;
  line-height: 16px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.article-answer .material-symbols-outlined {
  display: inline-grid;
  width: 40px;
  height: 40px;
  place-items: center;
  border-radius: 999px;
  background: rgba(183, 196, 255, 0.1);
}

.article-answer p {
  max-width: 820px;
  margin: 0;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: clamp(24px, 3vw, 32px);
  line-height: 1.25;
  font-weight: 700;
}

.article-layout {
  display: grid;
  grid-template-columns: 256px minmax(0, 768px);
  gap: 64px;
  align-items: start;
}

.article-toc {
  position: relative;
}

.article-toc > div {
  position: sticky;
  top: 128px;
}

.article-toc h3 {
  margin: 0 0 24px;
  color: var(--kb-muted);
}

.article-toc nav {
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--kb-stroke);
}

.article-toc a {
  padding: 8px 0 8px 16px;
  border-left: 2px solid transparent;
  color: var(--kb-muted);
  font-size: 14px;
  line-height: 20px;
  transition: color 180ms ease, border-color 180ms ease;
}

.article-toc a:hover,
.article-toc a.active {
  border-left-color: var(--kb-primary);
  color: var(--kb-primary);
}

.article-toc-mobile {
  display: none;
}

.article-body {
  max-width: 768px;
}

.article-section {
  scroll-margin-top: 128px;
  margin-bottom: 56px;
}

.article-section h2 {
  margin: 0 0 24px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: clamp(32px, 4vw, 40px);
  line-height: 1.2;
  font-weight: 700;
}

.article-section h3 {
  margin: 0 0 8px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: 20px;
  line-height: 28px;
  font-weight: 700;
}

.article-section p,
.article-section li {
  color: var(--kb-muted);
  font-size: 18px;
  line-height: 28px;
}

.article-section p {
  margin: 0 0 24px;
}

.article-steps {
  display: grid;
  gap: 18px;
  margin-top: 24px;
}

.article-step {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 24px;
  align-items: start;
  padding: 24px;
  border: 1px solid var(--kb-stroke);
  border-radius: 8px;
  background: var(--kb-surface);
}

.article-step > span {
  display: inline-grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border-radius: 999px;
  color: var(--kb-primary);
  background: rgba(183, 196, 255, 0.1);
  font-family: Sora, Inter, sans-serif;
  font-size: 24px;
  font-weight: 700;
}

.article-step p {
  margin: 0;
  font-size: 15px;
  line-height: 23px;
}

.article-mistakes {
  display: grid;
  gap: 16px;
  padding: 0;
  margin: 0;
  list-style: none;
}

.article-mistakes li {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 12px;
}

.article-mistakes .material-symbols-outlined {
  margin-top: 4px;
  color: var(--kb-error);
}

.article-mistakes strong {
  color: var(--kb-text);
}

.article-platform-box {
  margin-top: 32px;
  padding: 32px;
  border: 1px solid rgba(183, 196, 255, 0.3);
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(183, 196, 255, 0.08), transparent 70%);
  box-shadow: 0 0 30px rgba(61, 123, 255, 0.05);
}

.article-platform-box ul {
  margin: 0;
  padding-left: 22px;
}

.article-faq {
  display: grid;
  gap: 14px;
}

.article-faq__item {
  overflow: hidden;
  border: 1px solid var(--kb-stroke);
  border-radius: 8px;
  background: var(--kb-surface-low);
}

.article-faq__item summary {
  min-height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 22px;
  cursor: pointer;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: 18px;
  line-height: 26px;
  font-weight: 700;
  list-style: none;
  transition: background 180ms ease;
}

.article-faq__item summary::-webkit-details-marker {
  display: none;
}

.article-faq__item summary:hover {
  background: rgba(44, 53, 68, 0.5);
}

.article-faq__item summary span {
  color: var(--kb-muted);
  transition: transform 180ms ease;
}

.article-faq__item[open] summary span {
  transform: rotate(180deg);
}

.article-faq__item p {
  margin: 0;
  padding: 0 22px 20px;
  color: var(--kb-muted);
  font-size: 15px;
  line-height: 23px;
}

.article-cta {
  position: relative;
  padding: 40px;
  overflow: hidden;
  border: 1px solid var(--kb-stroke);
  border-radius: 12px;
  background: var(--kb-glass);
  text-align: center;
  backdrop-filter: blur(18px);
}

.article-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(0deg, rgba(183, 196, 255, 0.1), transparent 70%);
}

.article-cta > * {
  position: relative;
  z-index: 1;
}

.article-cta h2 {
  margin-bottom: 14px;
  font-size: 28px;
  line-height: 36px;
}

.article-cta p {
  max-width: 520px;
  margin: 0 auto 28px;
  font-size: 16px;
  line-height: 24px;
}

.article-cta a {
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 0 28px;
  border-radius: 999px;
  color: var(--kb-on-primary);
  background: var(--kb-primary);
  font-weight: 700;
  transition: transform 160ms ease, background 160ms ease, box-shadow 160ms ease;
}

.article-cta a:hover {
  background: var(--kb-primary-fixed);
  box-shadow: 0 0 20px rgba(61, 123, 255, 0.2);
}

.article-cta a:active {
  transform: scale(0.95);
}

.article-related {
  margin-top: 96px;
  padding-top: 56px;
  border-top: 1px solid var(--kb-stroke);
}

.article-related h2 {
  margin: 0 0 28px;
  font-family: Sora, Inter, sans-serif;
  font-size: 40px;
  line-height: 48px;
  font-weight: 700;
}

.article-related__grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
}

.article-related__card {
  display: block;
  padding: 24px;
  border: 1px solid var(--kb-stroke);
  border-radius: 12px;
  background: var(--kb-surface-low);
  transition: transform 220ms ease, background 220ms ease, border-color 220ms ease, box-shadow 220ms ease;
}

.article-related__card:hover {
  border-color: rgba(183, 196, 255, 0.4);
  background: var(--kb-surface);
  box-shadow: 0 10px 40px rgba(0, 0, 0, 0.34);
  transform: translateY(-4px);
}

.article-related__card span {
  color: var(--kb-primary);
}

.article-related__card h3 {
  margin: 14px 0 12px;
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: 20px;
  line-height: 28px;
}

.article-related__card p {
  margin: 0;
  color: var(--kb-muted);
  font-size: 14px;
  line-height: 22px;
}

.article-related__rows,
.article-related__all {
  display: none;
}

.reveal-element {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 800ms ease, transform 800ms ease;
}

.reveal-element.visible {
  opacity: 1;
  transform: translateY(0);
}

.knowledge-footer {
  border-top: 1px solid var(--kb-stroke);
  background: var(--kb-surface-lowest);
}

.knowledge-footer__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 24px;
  width: min(var(--kb-container), calc(100% - 64px));
  margin: 0 auto;
  padding: 72px 0;
}

.knowledge-footer__brand {
  display: grid;
  gap: 14px;
}

.knowledge-footer strong {
  color: var(--kb-text);
  font-family: Sora, Inter, sans-serif;
  font-size: 24px;
  line-height: 32px;
}

.knowledge-footer p,
.knowledge-footer span {
  max-width: 420px;
  margin: 0;
  color: var(--kb-muted);
}

.knowledge-footer nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  align-content: start;
  gap: 24px 34px;
}

.knowledge-footer a {
  min-height: 44px;
  display: inline-flex;
  align-items: center;
  color: var(--kb-muted);
  transition: color 180ms ease;
}

.knowledge-footer a:hover {
  color: var(--kb-electric);
}

.knowledge-mobile-header {
  display: none;
}

@media (max-width: 1120px) {
  .knowledge-topnav__links {
    display: none;
  }

  .knowledge-hero {
    grid-template-columns: 1fr;
  }

  .knowledge-rail {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .article-layout {
    grid-template-columns: 1fr;
  }

  .article-toc {
    display: none;
  }

  .article-toc-mobile {
    display: block;
    max-width: 768px;
    margin-bottom: 40px;
    border: 1px solid var(--kb-stroke);
    border-radius: 8px;
    background: var(--kb-surface-low);
    overflow: hidden;
  }

  .article-toc-mobile summary {
    min-height: 56px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    cursor: pointer;
    color: var(--kb-text);
    font-weight: 700;
    list-style: none;
  }

  .article-toc-mobile summary::-webkit-details-marker {
    display: none;
  }

  .article-toc-mobile summary span {
    color: var(--kb-muted);
    transition: transform 180ms ease;
  }

  .article-toc-mobile[open] summary span {
    transform: rotate(180deg);
  }

  .article-toc-mobile nav {
    display: grid;
    gap: 10px;
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
  }

  .article-toc-mobile a {
    min-height: 34px;
    display: flex;
    align-items: center;
    color: var(--kb-muted);
  }
}

@media (max-width: 760px) {
  :root {
    --kb-section: 80px;
  }

  body.knowledge-shell {
    background: var(--kb-background);
  }

  .knowledge-topnav {
    display: none;
  }

  body[data-page="knowledge-hub"] .knowledge-topnav {
    display: block;
  }

  body[data-page="knowledge-hub"] .knowledge-topnav__inner {
    width: min(100% - 24px, var(--kb-container));
    height: auto;
    min-height: 72px;
    gap: 10px;
    padding: 10px 0;
  }

  .knowledge-brand {
    font-size: 20px;
    line-height: 28px;
  }

  .knowledge-brand img {
    width: 30px;
    height: 30px;
  }

  body[data-page="knowledge-hub"] .knowledge-topnav__actions {
    gap: 8px;
  }

  body[data-page="knowledge-hub"] .knowledge-app-button {
    display: none;
  }

  body[data-page="knowledge-hub"] .knowledge-language {
    width: 88px;
    min-height: 38px;
    padding-left: 10px;
    font-size: 11px;
  }

  body[data-page="knowledge-hub"] .knowledge-nav__link--knowledge {
    min-height: 38px;
    font-size: 13px;
  }

  .knowledge-mobile-header {
    position: sticky;
    top: 0;
    z-index: 40;
    display: block;
    width: 100%;
    padding: 14px 16px 12px;
    border-bottom: 1px solid var(--kb-stroke);
    background: rgba(8, 17, 31, 0.9);
    backdrop-filter: blur(28px);
  }

  .knowledge-mobile-header__bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
  }

  .knowledge-mobile-header__bar a {
    min-width: 44px;
    min-height: 44px;
    display: inline-grid;
    place-items: center;
    color: var(--kb-muted);
  }

  .knowledge-mobile-header__bar strong {
    color: var(--kb-text);
    font-family: Sora, Inter, sans-serif;
    font-size: 20px;
    line-height: 28px;
  }

  .knowledge-mobile-header__search {
    position: relative;
    margin: 0;
  }

  .knowledge-mobile-header__search .material-symbols-outlined {
    position: absolute;
    top: 50%;
    left: 12px;
    color: var(--kb-muted);
    transform: translateY(-50%);
  }

  .knowledge-mobile-header .knowledge-search__input {
    min-height: 44px;
    padding-left: 42px;
    border-color: var(--kb-stroke);
    background: var(--kb-surface-low);
    box-shadow: none;
    font-size: 16px;
    line-height: 24px;
  }

  .knowledge-main,
  .knowledge-footer__inner {
    width: min(100% - 24px, var(--kb-container));
  }

  .knowledge-hub {
    padding-top: 108px;
  }

  .knowledge-hero h1,
  .article-header h1 {
    font-size: 40px;
    line-height: 46px;
  }

  .knowledge-hero p {
    font-size: 16px;
    line-height: 24px;
  }

  .knowledge-search__input {
    min-height: 56px;
  }

  .knowledge-filterbar {
    gap: 8px;
  }

  .knowledge-filter {
    padding: 0 12px;
    font-size: 11px;
  }

  .knowledge-reset {
    width: 100%;
    margin-left: 0;
    justify-content: flex-start;
  }

  .knowledge-rail {
    grid-template-columns: 1fr;
  }

  .knowledge-card {
    padding: 20px;
  }

  .knowledge-card__meta,
  .knowledge-card__tags {
    align-items: flex-start;
  }

  .knowledge-card h2 {
    font-size: 24px;
    line-height: 32px;
  }

  .knowledge-article {
    padding-top: 32px;
  }

  .knowledge-article-shell .knowledge-main {
    width: 100%;
  }

  .article-header,
  .article-answer,
  .article-toc-mobile,
  .article-body {
    width: min(100% - 24px, 768px);
    margin-right: auto;
    margin-left: auto;
  }

  .article-breadcrumb {
    display: none;
  }

  .article-kicker {
    margin-top: 8px;
  }

  .article-kicker span {
    min-height: 28px;
    display: inline-flex;
    align-items: center;
    font-size: 10px;
    line-height: 14px;
  }

  .article-meta {
    justify-content: space-between;
    gap: 12px;
    font-size: 10px;
    line-height: 14px;
  }

  .article-meta > span:nth-child(2),
  .article-meta > span:nth-child(4) {
    display: none;
  }

  .article-answer {
    padding: 22px;
    margin-bottom: 32px;
  }

  .article-answer p {
    font-size: 22px;
    line-height: 30px;
  }

  .article-section {
    margin-bottom: 44px;
    scroll-margin-top: 154px;
  }

  .article-section h2 {
    font-size: 24px;
    line-height: 32px;
  }

  .article-section p,
  .article-section li {
    font-size: 16px;
    line-height: 25px;
  }

  .article-step {
    grid-template-columns: 38px minmax(0, 1fr);
    gap: 14px;
    padding: 18px;
  }

  .article-step > span {
    width: 38px;
    height: 38px;
    font-size: 18px;
  }

  .article-platform-box,
  .article-cta {
    padding: 24px;
  }

  .article-faq__item summary {
    font-size: 16px;
    line-height: 23px;
  }

  .article-related {
    width: 100%;
    margin-top: 64px;
    padding: 32px 12px;
    background: var(--kb-surface-low);
  }

  .article-related h2 {
    width: min(100%, 768px);
    margin: 0 auto 22px;
    font-size: 24px;
    line-height: 32px;
  }

  .article-related__grid {
    display: none;
  }

  .article-related__rows {
    display: grid;
    gap: 12px;
    width: min(100%, 768px);
    margin: 0 auto;
  }

  .article-related__row {
    min-height: 80px;
    display: grid;
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 14px;
    align-items: center;
    padding: 12px;
    border: 1px solid var(--kb-stroke);
    border-radius: 8px;
    background: var(--kb-glass);
    backdrop-filter: blur(14px);
    transition: transform 160ms ease, border-color 160ms ease;
  }

  .article-related__row:active {
    transform: scale(0.98);
  }

  .article-related__row > .material-symbols-outlined {
    width: 56px;
    height: 56px;
    display: inline-grid;
    place-items: center;
    border: 1px solid var(--kb-stroke);
    border-radius: 6px;
    color: var(--kb-muted);
    background: var(--kb-surface);
  }

  .article-related__row h4 {
    margin: 0 0 4px;
    color: var(--kb-text);
    font-size: 14px;
    line-height: 19px;
    font-weight: 700;
  }

  .article-related__row small {
    color: var(--kb-muted);
    font-family: "JetBrains Mono", monospace;
    font-size: 10px;
    line-height: 14px;
    font-weight: 700;
    text-transform: uppercase;
  }

  .article-related__all {
    min-height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    width: min(100%, 768px);
    margin: 18px auto 0;
    border: 1px solid var(--kb-stroke);
    border-radius: 8px;
    color: var(--kb-text);
    font-weight: 700;
  }

  .knowledge-footer__inner {
    grid-template-columns: 1fr;
    padding: 56px 0;
    text-align: center;
  }

  .knowledge-footer__brand {
    justify-items: center;
  }

  .knowledge-footer nav {
    justify-content: center;
    gap: 16px 28px;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }

  .reveal-element {
    opacity: 1;
    transform: none;
  }
}