:root {
  color-scheme: dark;
  --ink: #f3f6f7;
  --muted: #aeb8bc;
  --soft: #d7dee0;
  --bg: #0d1113;
  --panel: #151b1e;
  --panel-2: #1d2529;
  --line: #354247;
  --line-strong: #617076;
  --accent: #45c3a6;
  --accent-2: #f2b84b;
  --danger: #e06a4f;
  --steel: #82919a;
  --max: 1180px;
  --radius: 8px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px) 0 0 / 42px 42px,
    linear-gradient(180deg, rgba(255, 255, 255, 0.018) 1px, transparent 1px) 0 0 / 42px 42px,
    var(--bg);
  color: var(--ink);
  line-height: 1.6;
}

a {
  color: inherit;
}

img, svg {
  max-width: 100%;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -4rem;
  z-index: 10;
  background: var(--accent);
  color: #07110f;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  font-weight: 800;
}

.skip-link:focus {
  top: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 9;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(13, 17, 19, 0.92);
  backdrop-filter: blur(16px);
}

.nav-shell {
  max-width: var(--max);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  min-height: 86px;
  padding: 0 1.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  flex: 0 0 auto;
  text-decoration: none;
  font-weight: 900;
  letter-spacing: 0;
}

.brand-logo-shell {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: clamp(154px, 14vw, 176px);
  height: 84px;
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: 7px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.97), rgba(230, 235, 237, 0.95));
  box-shadow: 0 8px 22px rgba(0, 0, 0, 0.18);
}

.brand-logo {
  display: block;
  width: 100%;
  height: auto;
  object-fit: contain;
}

.nav-toggle {
  display: none;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--ink);
  border-radius: 6px;
  padding: 0.6rem 0.75rem;
  font-weight: 800;
}

.nav-menu {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.35rem;
  list-style: none;
  margin: 0;
  padding: 0;
  flex: 1 1 auto;
}

.nav-item {
  position: relative;
}

.nav-menu a,
.nav-link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.48rem 0.64rem;
  border: 0;
  border-radius: 6px;
  background: transparent;
  color: var(--soft);
  text-decoration: none;
  font-size: 0.92rem;
  font-weight: 700;
  font-family: inherit;
  cursor: pointer;
}

.nav-menu a:hover,
.nav-menu a:focus-visible,
.nav-menu a[aria-current="page"],
.nav-link:hover,
.nav-link:focus-visible,
.nav-link[aria-current="page"],
.nav-link[aria-expanded="true"] {
  background: rgba(69, 195, 166, 0.12);
  color: var(--ink);
  outline: none;
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.55rem);
  left: 0;
  z-index: 12;
  display: none;
  min-width: 278px;
  list-style: none;
  margin: 0;
  padding: 0.55rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: rgba(15, 20, 22, 0.98);
  box-shadow: 0 22px 55px rgba(0, 0, 0, 0.36);
}

.has-dropdown:hover .dropdown-menu,
.has-dropdown:focus-within .dropdown-menu,
.dropdown-menu[data-open] {
  display: grid;
  gap: 0.15rem;
}

.dropdown-menu a {
  width: 100%;
  justify-content: flex-start;
  min-height: 38px;
}

.cloud-login {
  border: 1px solid rgba(69, 195, 166, 0.52) !important;
  background: rgba(69, 195, 166, 0.045) !important;
  color: var(--ink) !important;
  white-space: nowrap;
  box-shadow: inset 0 0 0 1px rgba(69, 195, 166, 0.08);
}

.cloud-login[aria-disabled="true"] {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  padding: 0.48rem 0.64rem;
  border-radius: 6px;
  font-size: 0.92rem;
  font-weight: 700;
  cursor: not-allowed;
  opacity: 0.78;
}

.section {
  padding: 4.75rem 1.25rem;
}

.section.tight {
  padding-top: 3.5rem;
  padding-bottom: 3.5rem;
}

.section.alt {
  background: rgba(255, 255, 255, 0.035);
  border-top: 1px solid rgba(255, 255, 255, 0.07);
  border-bottom: 1px solid rgba(255, 255, 255, 0.07);
}

.wrap {
  max-width: var(--max);
  margin: 0 auto;
}

.hero {
  min-height: 0;
  display: grid;
  align-items: center;
  padding: 4.1rem 1.25rem 3.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background:
    radial-gradient(circle at 80% 20%, rgba(69, 195, 166, 0.14), transparent 34%),
    linear-gradient(135deg, rgba(242, 184, 75, 0.09), transparent 42%);
}

.hero-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: minmax(0, 0.92fr) minmax(360px, 0.78fr);
  gap: clamp(2.25rem, 4.5vw, 3.75rem);
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

h1, h2, h3 {
  line-height: 1.08;
  margin: 0;
  letter-spacing: 0;
}

h1 {
  font-size: clamp(2.45rem, 4.6vw, 4.25rem);
  max-width: 11.8ch;
}

.page-hero h1 {
  max-width: 13ch;
}

h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
}

h3 {
  font-size: 1.25rem;
}

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

.lead {
  font-size: clamp(1.04rem, 1.45vw, 1.22rem);
  max-width: 58ch;
}

.hero-copy {
  display: grid;
  gap: 1.1rem;
  max-width: 620px;
}

.button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 0.45rem;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0.75rem 1.15rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--ink);
  text-decoration: none;
  font-weight: 850;
}

.architecture-panel {
  width: min(100%, 510px);
  justify-self: end;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(180deg, rgba(29, 37, 41, 0.96), rgba(17, 22, 24, 0.96));
  padding: 0.95rem;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

.architecture-flow {
  position: relative;
  display: grid;
  gap: 0.58rem;
  margin-top: 0.85rem;
}

.architecture-flow::before {
  content: "";
  position: absolute;
  left: 1.35rem;
  top: 1.2rem;
  bottom: 1.2rem;
  width: 2px;
  background: linear-gradient(180deg, var(--accent), rgba(242, 184, 75, 0.8));
}

.architecture-node {
  position: relative;
  display: grid;
  grid-template-columns: 3.1rem 1fr;
  gap: 0.65rem 0.85rem;
  align-items: center;
  min-height: 66px;
  border: 1px solid rgba(97, 112, 118, 0.62);
  border-radius: 7px;
  padding: 0.62rem 0.78rem;
  background: rgba(15, 20, 22, 0.86);
}

.architecture-node strong {
  font-size: 1rem;
}

.architecture-node p {
  grid-column: 2;
  font-size: 0.84rem;
}

.node-code {
  grid-row: span 2;
  display: grid;
  place-items: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 1px solid rgba(69, 195, 166, 0.55);
  border-radius: 50%;
  background: #111719;
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-weight: 850;
  font-size: 0.78rem;
}

.architecture-node.source {
  border-color: rgba(242, 184, 75, 0.55);
}

.architecture-node.terminal {
  border-color: rgba(69, 195, 166, 0.78);
  background: rgba(69, 195, 166, 0.08);
}

.metric-strip {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  margin-top: 0.9rem;
}

.metric-strip span {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.55rem;
  color: var(--steel);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.72rem;
  text-transform: uppercase;
}

.metric-strip b {
  color: var(--accent-2);
}

.button.primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #06110f;
}

.button:hover,
.button:focus-visible {
  outline: 2px solid var(--accent-2);
  outline-offset: 3px;
}

.industrial-visual {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(29, 37, 41, 0.94), rgba(17, 22, 24, 0.94));
  padding: 1.1rem;
  box-shadow: 0 20px 70px rgba(0, 0, 0, 0.35);
}

.visual-top {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 0.8rem;
  border-bottom: 1px solid var(--line);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  color: var(--steel);
  font-size: 0.76rem;
}

.signal-board {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-top: 1rem;
}

.module {
  min-height: 116px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 0.9rem;
  background: rgba(255, 255, 255, 0.035);
}

.module strong {
  display: block;
  margin-bottom: 0.35rem;
}

.bars {
  display: grid;
  gap: 0.42rem;
  margin-top: 0.75rem;
}

.bar {
  height: 7px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent) var(--fill), rgba(255, 255, 255, 0.12) var(--fill));
}

.system-flow {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1.65rem;
}

.flow-step {
  min-height: 142px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1rem 1.05rem;
  background: var(--panel);
  position: relative;
}

.flow-step::after {
  content: "";
  position: absolute;
  right: -1rem;
  top: 50%;
  width: 1rem;
  height: 1px;
  background: var(--accent);
}

.flow-step:nth-child(3)::after,
.flow-step:last-child::after {
  display: none;
}

.flow-step span {
  display: block;
  color: var(--accent-2);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  margin-bottom: 0.55rem;
}

.flow-step h3 {
  margin-bottom: 0.45rem;
  font-size: 1.12rem;
}

.flow-step p {
  font-size: 0.92rem;
}

.section-heading {
  display: grid;
  gap: 0.9rem;
  max-width: 760px;
  margin-bottom: 1.65rem;
}

.grid {
  display: grid;
  gap: 1rem;
}

.grid.two {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.section.alt .grid.three > .card {
  display: flex;
  flex-direction: column;
  min-height: 220px;
}

.section.alt .grid.three > .card a {
  margin-top: auto;
}

.card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  padding: 1.25rem;
}

.card.highlight {
  border-color: rgba(69, 195, 166, 0.55);
  background: linear-gradient(180deg, rgba(69, 195, 166, 0.09), rgba(255, 255, 255, 0.035));
}

.card h3 {
  margin-bottom: 0.65rem;
}

.card a {
  display: inline-flex;
  margin-top: 1rem;
  color: var(--accent);
  font-weight: 850;
  text-decoration: none;
}

.case-study-grid {
  align-items: stretch;
}

.case-study-card {
  display: flex;
  flex-direction: column;
}

.case-study-card .button {
  align-self: flex-start;
  margin-top: auto;
  color: var(--ink);
}

.case-study-meta {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.15rem;
  color: var(--steel);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.74rem;
  text-transform: uppercase;
}

.case-study-meta span:first-child {
  color: var(--accent-2);
}

.article-layout {
  max-width: 820px;
  margin: 0 auto;
}

.article-header {
  display: grid;
  gap: 1.15rem;
  max-width: 920px;
}

.article-header h1 {
  max-width: 18ch;
}

.article-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 1.2rem;
  color: var(--steel);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.8rem;
  text-transform: uppercase;
}

.article-prose {
  display: grid;
  gap: 1.1rem;
}

.article-prose h2 {
  margin-top: 1.8rem;
  font-size: clamp(1.65rem, 3vw, 2.35rem);
}

.article-prose h3 {
  margin-top: 1rem;
}

.article-prose p,
.article-prose li {
  max-width: 72ch;
  color: var(--soft);
}

.article-prose ul {
  display: grid;
  gap: 0.7rem;
  padding-left: 1.25rem;
  margin: 0;
}

.article-prose li::marker {
  color: var(--accent);
}

.article-architecture {
  margin: 1.8rem 0 0;
}

.article-architecture figcaption {
  margin-top: 0.8rem;
  color: var(--muted);
  font-size: 0.88rem;
}

.takeaway-list {
  display: grid;
  gap: 0.75rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.takeaway-list li {
  padding: 0.75rem 0.9rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: rgba(255, 255, 255, 0.025);
}

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

.related-articles .card {
  display: flex;
  flex-direction: column;
}

.related-articles .card a {
  margin-top: auto;
}

.related-link-list {
  display: grid;
  gap: 0.65rem;
  margin-top: 1rem;
}

.related-link-list a {
  margin-top: 0;
}

.article-cta {
  border-color: rgba(69, 195, 166, 0.55);
  background: linear-gradient(135deg, rgba(69, 195, 166, 0.1), rgba(255, 255, 255, 0.025));
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.tag {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.35rem 0.6rem;
  color: var(--soft);
  font-size: 0.82rem;
}

.architecture-chain {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr) auto minmax(0, 1fr);
  align-items: center;
  gap: 0.75rem;
}

.chain-node {
  min-height: 126px;
  display: grid;
  align-content: center;
  gap: 0.45rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
}

.chain-node span {
  color: var(--accent-2);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
}

.chain-node strong {
  font-size: 1.05rem;
}

.chain-node small {
  color: var(--muted);
  font-size: 0.84rem;
}

.highlight-node {
  border-color: rgba(69, 195, 166, 0.7);
  background: rgba(69, 195, 166, 0.08);
}

.optional-node {
  border-style: dashed;
}

.chain-arrow {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 1.35rem;
}

.ai-followup {
  max-width: 68%;
  margin-top: 1rem;
}

.demo-placeholder {
  display: grid;
  align-content: center;
  gap: 0.55rem;
  min-height: 190px;
  border-style: dashed;
  background:
    linear-gradient(90deg, rgba(255, 255, 255, 0.035) 1px, transparent 1px) 0 0 / 28px 28px,
    linear-gradient(180deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px) 0 0 / 28px 28px,
    var(--panel);
}

.demo-placeholder strong {
  font-size: 1.8rem;
}

.boundary-card {
  display: grid;
  gap: 1rem;
  border-color: rgba(242, 184, 75, 0.55);
  background: rgba(242, 184, 75, 0.06);
}

.boundary-card > div {
  display: grid;
  gap: 0.35rem;
  padding-left: 0.85rem;
  border-left: 3px solid var(--accent);
}

.boundary-card > div:last-child {
  border-left-color: var(--danger);
}

.boundary-label {
  color: var(--accent);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.75rem;
  font-weight: 850;
  letter-spacing: 0.04em;
}

.boundary-label.blocked {
  color: var(--danger);
}

.boundary-card strong {
  color: var(--soft);
}

.process-list {
  display: grid;
  gap: 0.7rem;
  padding: 0;
  margin: 0;
  list-style: none;
}

.process-list li {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 0.8rem;
  align-items: start;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--line);
}

.process-list li:last-child {
  border-bottom: 0;
}

.process-list span {
  color: var(--accent-2);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 850;
}

.process-list strong {
  display: block;
  margin-bottom: 0.2rem;
}

.process-list p {
  font-size: 0.88rem;
}

.page-hero {
  padding: 5rem 1.25rem 4rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  background:
    linear-gradient(135deg, rgba(69, 195, 166, 0.12), transparent 38%),
    rgba(255, 255, 255, 0.02);
}

.page-hero .wrap {
  display: grid;
  gap: 1.2rem;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 0.86fr) minmax(280px, 0.54fr);
  gap: 2rem;
  align-items: start;
}

.check-list {
  display: grid;
  gap: 0.7rem;
  padding: 0;
  margin: 1.25rem 0 0;
  list-style: none;
}

.check-list li {
  border-left: 3px solid var(--accent);
  padding-left: 0.85rem;
  color: var(--soft);
}

.notice {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 1rem;
  color: var(--soft);
  background: rgba(242, 184, 75, 0.06);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.form-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.contact-form button:disabled {
  cursor: wait;
  opacity: 0.65;
}

.form-trap {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.consent-field {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.65rem;
  align-items: start;
  color: var(--muted);
  font-size: 0.88rem;
}

.consent-field input {
  width: 1.1rem;
  height: 1.1rem;
  margin: 0.2rem 0 0;
  accent-color: var(--accent);
}

.consent-field a {
  color: var(--accent);
}

.field {
  display: grid;
  gap: 0.4rem;
}

label {
  font-weight: 800;
  color: var(--soft);
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #0f1416;
  color: var(--ink);
  padding: 0.82rem 0.9rem;
  font: inherit;
}

textarea {
  min-height: 150px;
  resize: vertical;
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.footer {
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  padding: 3rem 1.25rem;
  background: #090d0f;
}

.footer-grid {
  max-width: var(--max);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

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

.footer-contact {
  display: grid;
  gap: 0.16rem;
  margin-top: 0.85rem;
  max-width: 30rem;
  font-size: 0.86rem;
}

.footer-contact strong {
  color: var(--soft);
}

.footer-contact a,
.footer-contact span {
  color: var(--muted);
}

.contact-details {
  display: grid;
  gap: 0.9rem;
  margin: 1.25rem 0 0;
}

.contact-details p {
  display: grid;
  gap: 0.12rem;
}

.contact-details strong {
  color: var(--soft);
}

.contact-details a {
  color: var(--accent);
  font-weight: 800;
  text-decoration: none;
}

.contact-details a:hover,
.contact-details a:focus-visible {
  color: var(--accent-2);
}

.contact-details address {
  color: var(--muted);
  font-style: normal;
}

@media (max-width: 980px) {
  .nav-toggle {
    display: inline-flex;
  }

  .nav-menu {
    position: absolute;
    inset: 86px 1rem auto 1rem;
    display: none;
    flex-direction: column;
    align-items: stretch;
    border: 1px solid var(--line);
    border-radius: var(--radius);
    background: var(--panel);
    padding: 0.7rem;
  }

  .nav-menu[data-open] {
    display: flex;
  }

  .nav-menu a {
    width: 100%;
  }

  .nav-menu .cloud-login {
    width: 100%;
  }

  .nav-link {
    width: 100%;
    justify-content: flex-start;
  }

  .nav-item {
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    min-width: 0;
    margin: 0.25rem 0 0.35rem;
    box-shadow: none;
    background: rgba(255, 255, 255, 0.035);
  }

  .hero-grid,
  .split,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .architecture-panel {
    justify-self: stretch;
    width: 100%;
  }

  .system-flow,
  .grid.three {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .flow-step::after {
    display: none;
  }

  .architecture-chain {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .related-articles {
    grid-template-columns: 1fr;
  }

  .chain-arrow {
    display: none;
  }

  .ai-followup {
    max-width: none;
  }
}

@media (max-width: 640px) {
  .hero {
    min-height: auto;
  }

  .section {
    padding: 4rem 1rem;
  }

  .nav-shell {
    padding: 0 1rem;
  }

  .brand-logo-shell {
    width: min(49vw, 148px);
    height: 72px;
  }

  .signal-board,
  .system-flow,
  .grid.two,
  .grid.three,
  .metric-strip {
    grid-template-columns: 1fr;
  }

  .flow-step::after {
    right: auto;
    left: 1rem;
    top: auto;
    bottom: -0.7rem;
    width: 1px;
    height: 0.7rem;
  }

  .button-row {
    flex-direction: column;
  }

  .button {
    width: 100%;
  }

  .architecture-chain {
    grid-template-columns: 1fr;
  }

  .article-meta {
    display: grid;
    gap: 0.35rem;
  }

  .chain-node {
    min-height: 108px;
  }
}