/* AI Insights & Resource Center — knowledge-center (not blog) */

.ins-hero {
  padding: 64px 0 56px;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

@media (min-width: 640px) {
  .ins-hero {
    padding: 96px 0 72px;
  }
}

.ins-hero h1 {
  font-size: clamp(34px, 5vw, 52px);
  line-height: 1.08;
  max-width: 16ch;
  margin: 0;
  letter-spacing: -0.02em;
}

.ins-hero .lead {
  font-size: 17.5px;
  max-width: 54ch;
  margin: 18px 0 0;
  line-height: 1.65;
}

.ins-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.ins-search-bar {
  margin-top: 32px;
  display: grid;
  gap: 12px;
}

@media (min-width: 800px) {
  .ins-search-bar {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.ins-search {
  position: relative;
}

.ins-search input[type="search"] {
  width: 100%;
  appearance: none;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg);
  color: var(--ink);
  font-family: inherit;
  font-size: 15px;
  padding: 14px 18px 14px 46px;
  transition: border-color var(--duration) var(--ease), box-shadow var(--duration) var(--ease);
}

.ins-search input[type="search"]:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: var(--focus-ring);
  background: var(--surface);
}

.ins-search .search-icon {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--ink-faint);
  pointer-events: none;
}

.ins-search-meta {
  font-size: 13px;
  color: var(--ink-faint);
  font-family: var(--font-mono);
  letter-spacing: 0.03em;
}

.ins-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.ins-chip {
  font-size: 12.5px;
  font-weight: 500;
  color: var(--ink-soft);
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 7px 12px;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--duration) var(--ease), border-color var(--duration) var(--ease), color var(--duration) var(--ease);
}

.ins-chip:hover {
  border-color: var(--ink-faint);
  color: var(--ink);
}

.ins-chip.is-active {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.ins-chip:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.ins-section {
  padding: 56px 0;
  border-bottom: 1px solid var(--border);
}

@media (min-width: 640px) {
  .ins-section {
    padding: 72px 0;
  }
}

.ins-section.surface {
  background: var(--surface);
}

.ins-section.ink {
  background: var(--ink);
  border-bottom: none;
  color: #fff;
}

.ins-section.ink h2,
.ins-section.ink h3 {
  color: #fff;
}

.ins-section.ink p {
  color: #b7c1d1;
}

.ins-section.ink .eyebrow {
  color: #9fe1cb;
}

.ins-section.ink .eyebrow::before {
  background: #9fe1cb;
}

.ins-section .section-intro {
  max-width: 640px;
  margin-bottom: 32px;
}

.ins-section .section-intro h2 {
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 10px;
  line-height: 1.2;
}

.ins-section .section-intro p {
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  max-width: 52ch;
}

.ins-section-head-row {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 32px;
}

.ins-section-head-row .section-intro {
  margin-bottom: 0;
}

.ins-link-all {
  font-size: 14px;
  font-weight: 500;
  color: var(--teal-deep);
}

.ins-link-all:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Article cards */
.ins-grid {
  display: grid;
  gap: 16px;
}

@media (min-width: 720px) {
  .ins-grid.cols-2 {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1000px) {
  .ins-grid.cols-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.article-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
  box-shadow: var(--shadow-xs);
  transition:
    transform var(--duration) var(--ease),
    box-shadow var(--duration) var(--ease),
    border-color var(--duration) var(--ease);
  height: 100%;
}

.ins-section.surface .article-card {
  background: var(--bg);
}

.article-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.article-card-media {
  position: relative;
  aspect-ratio: 16 / 9;
  background:
    linear-gradient(135deg, rgba(14, 124, 123, 0.18), rgba(18, 33, 60, 0.55)),
    linear-gradient(160deg, #12213c, #0a5f5e);
  overflow: hidden;
}

.article-card-media .media-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.35;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.06) 1px, transparent 1px);
  background-size: 24px 24px;
  transition: transform var(--duration-slow) var(--ease-out);
}

.article-card:hover .media-pattern {
  transform: scale(1.06);
}

.article-card-media .media-label {
  position: absolute;
  left: 14px;
  bottom: 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #9fe1cb;
  border: 1px solid rgba(159, 225, 203, 0.3);
  background: rgba(18, 33, 60, 0.45);
  border-radius: 999px;
  padding: 5px 10px;
  backdrop-filter: blur(6px);
}

.article-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 20px 18px 20px;
}

.article-card-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 12px;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.article-card-meta .cat {
  color: var(--teal-deep);
}

.article-card h3 {
  font-size: 18px;
  margin: 0 0 8px;
  line-height: 1.3;
  max-width: 28ch;
}

.article-card h3 a {
  color: var(--ink);
}

.article-card h3 a:hover {
  color: var(--teal-deep);
}

.article-card .excerpt {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink-soft);
  flex: 1;
}

.article-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 14px;
}

.article-card-tags span {
  font-size: 11.5px;
  color: var(--ink-faint);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 3px 8px;
  background: var(--surface);
}

.article-card-foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

.article-card-author {
  font-size: 12.5px;
  color: var(--ink-faint);
}

.article-card-author strong {
  display: block;
  color: var(--ink);
  font-weight: 600;
  font-size: 13px;
}

.article-card .btn {
  padding: 9px 16px;
  font-size: 13px;
}

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

/* Category tiles */
.cat-grid {
  display: grid;
  gap: 12px;
}

@media (min-width: 640px) {
  .cat-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1000px) {
  .cat-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1200px) {
  .cat-grid.cols-4 {
    grid-template-columns: repeat(4, 1fr);
  }
}

.cat-tile {
  display: block;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 22px 20px;
  box-shadow: var(--shadow-xs);
  transition: transform var(--duration) var(--ease), box-shadow var(--duration) var(--ease), border-color var(--duration) var(--ease);
}

.ins-section.surface .cat-tile {
  background: var(--bg);
}

.cat-tile:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-strong);
}

.cat-tile .cat-count {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-deep);
  margin-bottom: 8px;
}

.cat-tile h3 {
  font-size: 18px;
  margin: 0 0 8px;
}

.cat-tile p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.55;
}

/* Topic / tech chips */
.topic-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.topic-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  background: var(--surface);
  border-radius: 999px;
  padding: 10px 14px;
  font-size: 13.5px;
  font-weight: 500;
  color: var(--ink);
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.ins-section.surface .topic-pill {
  background: var(--bg);
}

.topic-pill:hover {
  border-color: var(--teal);
  background: var(--teal-tint);
}

.topic-pill .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--teal);
}

/* Layout with sidebar */
.ins-layout {
  display: grid;
  gap: 32px;
}

@media (min-width: 1000px) {
  .ins-layout {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 40px;
    align-items: start;
  }
}

.ins-sidebar {
  display: grid;
  gap: 16px;
}

@media (min-width: 1000px) {
  .ins-sidebar {
    position: sticky;
    top: 88px;
  }
}

.sidebar-card {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 20px 18px;
  box-shadow: var(--shadow-xs);
}

.sidebar-card h3 {
  font-size: 15px;
  margin: 0 0 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border);
}

.sidebar-list {
  display: grid;
  gap: 10px;
}

.sidebar-list a {
  display: block;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--ink-soft);
  transition: color var(--duration) var(--ease);
}

.sidebar-list a:hover {
  color: var(--teal-deep);
}

.sidebar-list .meta {
  display: block;
  margin-top: 2px;
  font-size: 11px;
  font-family: var(--font-mono);
  color: var(--ink-faint);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.sidebar-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.sidebar-tags a {
  font-size: 12px;
  color: var(--ink-soft);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 5px 10px;
  background: var(--bg);
}

.sidebar-tags a:hover {
  border-color: var(--teal);
  color: var(--teal-deep);
}

.sidebar-cta {
  background: var(--ink);
  border-color: var(--ink);
  color: #fff;
}

.sidebar-cta h3 {
  color: #fff;
  border-bottom-color: rgba(255, 255, 255, 0.12);
}

.sidebar-cta p {
  color: #b7c1d1;
  font-size: 13.5px;
  margin: 0 0 14px;
}

.sidebar-cta .btn-primary {
  background: #fff;
  color: var(--ink);
  width: 100%;
  justify-content: center;
}

.sidebar-cta .btn-primary:hover {
  background: #9fe1cb;
}

.newsletter-form {
  display: grid;
  gap: 10px;
}

.newsletter-form input[type="email"] {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 11px 12px;
  font: inherit;
  font-size: 14px;
  background: var(--bg);
  color: var(--ink);
}

.newsletter-form input:focus {
  outline: none;
  border-color: var(--teal);
  box-shadow: var(--focus-ring);
}

.newsletter-form .note {
  font-size: 11.5px;
  color: var(--ink-faint);
  margin: 0;
  line-height: 1.4;
}

.newsletter-form .status {
  font-size: 12.5px;
  margin: 0;
  color: var(--teal-deep);
  display: none;
}

.newsletter-form .status.is-visible {
  display: block;
}

/* Empty / results */
.ins-empty {
  display: none;
  border: 1px dashed var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 24px;
  text-align: center;
  color: var(--ink-faint);
  font-size: 15px;
}

.ins-empty.is-visible {
  display: block;
}

/* Article page */
.article-hero {
  padding: 56px 0 40px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

@media (min-width: 640px) {
  .article-hero {
    padding: 80px 0 56px;
  }
}

.article-hero .crumb {
  font-size: 13px;
  color: var(--ink-faint);
  margin-bottom: 16px;
}

.article-hero .crumb a {
  color: var(--ink-soft);
}

.article-hero .crumb a:hover {
  color: var(--teal-deep);
}

.article-hero h1 {
  font-size: clamp(28px, 4vw, 42px);
  max-width: 20ch;
  margin: 0 0 14px;
  line-height: 1.15;
}

.article-hero .dek {
  font-size: 17px;
  max-width: 58ch;
  margin: 0 0 20px;
  line-height: 1.65;
}

.article-meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 18px;
  font-size: 13px;
  color: var(--ink-faint);
}

.article-meta-row strong {
  color: var(--ink);
  font-weight: 600;
}

.article-body-wrap {
  padding: 48px 0 72px;
}

.article-prose {
  max-width: 720px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.article-prose > .toc {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
  padding: 20px 20px 16px;
  margin: 0 0 36px;
}

.article-prose > .toc .toc-label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-faint);
  margin-bottom: 12px;
}

.article-prose > .toc ol {
  margin: 0;
  padding-left: 1.15em;
  list-style: decimal;
}

.article-prose > .toc li {
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.45;
}

.article-prose > .toc a {
  color: var(--ink);
}

.article-prose > .toc a:hover {
  color: var(--teal-deep);
}

.article-prose h2 {
  font-size: clamp(1.35rem, 2.2vw, 1.65rem);
  color: var(--ink);
  margin: 2.4em 0 0.7em;
  line-height: 1.25;
  scroll-margin-top: 96px;
}

.article-prose h2:first-of-type {
  margin-top: 0;
}

.article-prose h3 {
  font-size: 1.15rem;
  color: var(--ink);
  margin: 1.8em 0 0.55em;
  scroll-margin-top: 96px;
}

.article-prose p {
  margin: 0 0 1.15em;
  font-size: 16px;
  line-height: 1.75;
}

.article-prose ul,
.article-prose ol {
  margin: 0 0 1.25em;
  padding-left: 1.25em;
  list-style: disc;
}

.article-prose ol {
  list-style: decimal;
}

.article-prose li {
  margin-bottom: 0.45em;
  line-height: 1.65;
}

.article-prose a {
  color: var(--teal-deep);
  text-decoration: underline;
  text-underline-offset: 2px;
  text-decoration-thickness: 1px;
}

.article-prose a:hover {
  color: var(--ink);
}

.article-prose strong {
  color: var(--ink);
  font-weight: 600;
}

.article-prose .callout {
  border: 1px solid rgba(14, 124, 123, 0.22);
  border-left: 3px solid var(--teal);
  background: var(--teal-tint);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 16px 18px;
  margin: 1.6em 0;
  font-size: 15px;
  color: var(--ink);
  line-height: 1.65;
}

.article-prose .callout strong {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-deep);
  margin-bottom: 6px;
  font-weight: 500;
}

.article-prose .checklist {
  list-style: none;
  padding: 0;
  margin: 0 0 1.4em;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  overflow: hidden;
}

.article-prose .checklist li {
  position: relative;
  margin: 0;
  padding: 12px 16px 12px 42px;
  border-bottom: 1px solid var(--border);
  font-size: 15px;
  color: var(--ink-soft);
}

.article-prose .checklist li:last-child {
  border-bottom: none;
}

.article-prose .checklist li::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 1em;
  width: 14px;
  height: 14px;
  border: 1.5px solid var(--teal);
  border-radius: 3px;
  background: var(--teal-tint);
}

.article-prose .roadmap {
  display: grid;
  gap: 0;
  margin: 1.5em 0 2em;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--surface);
}

.article-prose .roadmap-step {
  display: grid;
  gap: 4px;
  padding: 16px 18px;
  border-bottom: 1px solid var(--border);
}

.article-prose .roadmap-step:last-child {
  border-bottom: none;
}

.article-prose .roadmap-step .num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-deep);
}

.article-prose .roadmap-step strong {
  font-size: 15.5px;
}

.article-prose .roadmap-step span {
  font-size: 14px;
  color: var(--ink-soft);
  line-height: 1.55;
}

.article-prose .svg-figure {
  margin: 1.75em 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 20px 16px 14px;
  box-shadow: var(--shadow-xs);
  overflow-x: auto;
}

.article-prose .svg-figure svg {
  width: 100%;
  max-width: 640px;
  height: auto;
  margin: 0 auto;
}

.article-prose .svg-figure figcaption {
  margin-top: 12px;
  font-size: 12.5px;
  color: var(--ink-faint);
  text-align: center;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
}

.article-prose .ui-table-wrap {
  margin: 1.5em 0 1.75em;
}

.article-prose .ui-table th,
.article-prose .ui-table td {
  font-size: 13.5px;
  vertical-align: top;
}

.article-prose .faq-block {
  margin: 1.25em 0;
  border-top: 1px solid var(--border);
  padding-top: 1.1em;
}

.article-prose .faq-block h3 {
  margin-top: 0;
  font-size: 1.05rem;
}

.article-prose .faq-blocks details {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--surface);
  margin-bottom: 10px;
  padding: 0;
}

.article-prose .faq-blocks summary {
  cursor: pointer;
  list-style: none;
  padding: 14px 16px;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--ink);
}

.article-prose .faq-blocks summary::-webkit-details-marker {
  display: none;
}

.article-prose .faq-blocks details[open] summary {
  border-bottom: 1px solid var(--border);
}

.article-prose .faq-blocks details p {
  padding: 12px 16px 16px;
  margin: 0;
  font-size: 15px;
}

.article-prose section > h2 {
  margin-top: 0;
}

.article-prose section {
  margin-top: 2.4em;
}

.article-prose section:first-of-type {
  margin-top: 0;
}

.article-flag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--teal-deep);
  background: var(--teal-tint);
  border-radius: 999px;
  padding: 4px 10px;
  margin-bottom: 12px;
}

.article-prose .status-banner {
  border: 1px solid rgba(14, 124, 123, 0.25);
  background: var(--teal-tint);
  border-radius: var(--radius);
  padding: 16px 18px;
  margin-bottom: 28px;
  font-size: 14.5px;
  color: var(--teal-deep);
  line-height: 1.55;
}

.article-prose .outline {
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--surface);
  padding: 22px 20px;
  margin-bottom: 28px;
}

.article-prose .outline h2 {
  font-size: 18px;
  margin: 0 0 12px;
}

.article-prose .outline ol {
  margin: 0;
  padding-left: 1.2em;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.7;
}

.article-prose .outline li {
  margin-bottom: 6px;
}

.article-prose .diagram-ph {
  border: 1px dashed var(--border-strong);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(14, 124, 123, 0.05), transparent 50%),
    var(--bg);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 28px;
  margin: 28px 0;
  color: var(--ink-faint);
  font-size: 13.5px;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.article-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 32px;
}

.article-tags a {
  font-size: 12.5px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 11px;
  color: var(--ink-soft);
  background: var(--surface);
}

.article-tags a:hover {
  border-color: var(--teal);
  color: var(--teal-deep);
}

.ins-cta {
  background: var(--ink);
  color: #fff;
  padding: 64px 0;
}

.ins-cta h2 {
  color: #fff;
  font-size: clamp(24px, 3vw, 34px);
  margin: 0 0 12px;
}

.ins-cta p {
  color: #b7c1d1;
  max-width: 48ch;
  margin: 0 0 24px;
}

.ins-cta .eyebrow {
  color: #9fe1cb;
}

.ins-cta .eyebrow::before {
  background: #9fe1cb;
}

.ins-cta .btn-primary {
  background: #fff;
  color: var(--ink);
}

.ins-cta .btn-primary:hover {
  background: #9fe1cb;
}

.ins-cta .actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}