:root {
  color-scheme: light;
  --bg: #f4f1ea;
  --surface: #fffdf8;
  --surface-2: #ebe7dd;
  --surface-3: #ded9cd;
  --ink: #15211d;
  --muted: #59655f;
  --line: #cfc9bd;
  --brand: #0b6b55;
  --brand-2: #0f8a6c;
  --brand-soft: #dcefe7;
  --accent: #df6b3f;
  --accent-soft: #f9e2d8;
  --blue: #285d8f;
  --blue-soft: #dfeaf4;
  --warning: #9a6500;
  --warning-soft: #fff0c8;
  --danger: #a63232;
  --danger-soft: #f7dddd;
  --pending: #695aa6;
  --pending-soft: #e9e4f6;
  --shadow: 0 16px 48px rgba(24, 35, 30, 0.08);
  --radius: 18px;
  --radius-sm: 10px;
  --page: 1180px;
  --mono: "SFMono-Regular", Consolas, "Liberation Mono", monospace;
  --sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0f1714;
  --surface: #16211d;
  --surface-2: #1d2b26;
  --surface-3: #293a34;
  --ink: #edf4f0;
  --muted: #aab8b1;
  --line: #354740;
  --brand: #63d0ad;
  --brand-2: #8ce2c6;
  --brand-soft: #183f34;
  --accent: #ff9871;
  --accent-soft: #47291f;
  --blue: #83b8ec;
  --blue-soft: #1c344a;
  --warning: #f4c766;
  --warning-soft: #443816;
  --danger: #ff9393;
  --danger-soft: #472424;
  --pending: #c4b5fd;
  --pending-soft: #30284d;
  --shadow: 0 18px 54px rgba(0, 0, 0, 0.28);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
}

body {
  margin: 0;
  background:
    radial-gradient(circle at 5% -5%, color-mix(in srgb, var(--brand) 10%, transparent), transparent 32rem),
    radial-gradient(circle at 95% 0%, color-mix(in srgb, var(--accent) 8%, transparent), transparent 30rem),
    var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.68;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--brand);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

a:hover {
  color: var(--brand-2);
}

button,
input,
select {
  font: inherit;
}

button {
  color: inherit;
}

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

code,
pre,
kbd {
  font-family: var(--mono);
}

code {
  padding: 0.12em 0.34em;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--surface-2);
  font-size: 0.9em;
}

pre {
  overflow-x: auto;
  margin: 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #101916;
  color: #e4f1eb;
  line-height: 1.55;
  tab-size: 2;
}

pre code {
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font-size: 0.86rem;
}

.skip-link {
  position: fixed;
  z-index: 1000;
  top: 0.5rem;
  left: 0.5rem;
  transform: translateY(-160%);
  padding: 0.55rem 0.8rem;
  border-radius: 8px;
  background: var(--ink);
  color: var(--surface);
}

.skip-link:focus {
  transform: translateY(0);
}

.site-header {
  position: sticky;
  z-index: 50;
  top: 0;
  border-bottom: 1px solid color-mix(in srgb, var(--line) 85%, transparent);
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(18px);
}

.nav-wrap {
  width: min(var(--page), calc(100% - 2rem));
  min-height: 68px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.72rem;
  color: var(--ink);
  font-weight: 760;
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.brand-mark {
  width: 34px;
  height: 34px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--ink);
  color: var(--surface);
  font-size: 0.82rem;
  letter-spacing: -0.05em;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  margin-left: auto;
}

.site-nav a {
  padding: 0.48rem 0.68rem;
  border-radius: 8px;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  text-decoration: none;
}

.site-nav a:hover,
.site-nav a[aria-current="page"] {
  background: var(--surface-2);
  color: var(--ink);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.45rem;
}

.icon-button,
.copy-button,
.soft-button {
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  cursor: pointer;
  transition: transform 140ms ease, border-color 140ms ease, background 140ms ease;
}

.icon-button:hover,
.copy-button:hover,
.soft-button:hover {
  transform: translateY(-1px);
  border-color: var(--brand);
}

.icon-button {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
}

.menu-button {
  display: none;
}

.page-shell {
  width: min(var(--page), calc(100% - 2rem));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.38fr) minmax(290px, 0.62fr);
  gap: clamp(1.5rem, 5vw, 4.5rem);
  align-items: center;
  padding: clamp(3.2rem, 8vw, 7rem) 0 3.4rem;
}

.eyebrow {
  margin: 0 0 0.7rem;
  color: var(--brand);
  font-size: 0.76rem;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.hero h1 {
  max-width: 820px;
  margin: 0;
  font-size: clamp(2.25rem, 6vw, 5rem);
  line-height: 1.03;
  letter-spacing: -0.055em;
}

.hero .lead {
  max-width: 760px;
  margin: 1.35rem 0 0;
  color: var(--muted);
  font-size: clamp(1.03rem, 1.8vw, 1.25rem);
  line-height: 1.75;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.button {
  display: inline-flex;
  min-height: 42px;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  padding: 0.58rem 0.9rem;
  border: 1px solid var(--brand);
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
  font-weight: 720;
  text-decoration: none;
}

.button:hover {
  background: var(--brand-2);
  color: #fff;
}

.button.secondary {
  border-color: var(--line);
  background: var(--surface);
  color: var(--ink);
}

.hero-panel {
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(145deg, var(--surface), var(--surface-2));
  box-shadow: var(--shadow);
}

.hero-panel h2 {
  margin: 0 0 0.85rem;
  font-size: 1rem;
  letter-spacing: -0.01em;
}

.status-stack {
  display: grid;
  gap: 0.58rem;
}

.status-row {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.72rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: color-mix(in srgb, var(--surface) 78%, transparent);
}

.status-row span:first-child {
  color: var(--muted);
  font-size: 0.88rem;
}

.status-row strong {
  text-align: right;
  font-size: 0.87rem;
}

.status-band {
  display: grid;
  grid-template-columns: repeat(6, minmax(0, 1fr));
  overflow: hidden;
  margin: 0 0 2.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.status-band > div {
  min-width: 0;
  padding: 0.95rem 1rem;
  border-right: 1px solid var(--line);
}

.status-band > div:last-child {
  border-right: 0;
}

.status-band span {
  display: block;
  color: var(--muted);
  font-size: 0.72rem;
  font-weight: 760;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.status-band strong {
  display: block;
  overflow: hidden;
  margin-top: 0.22rem;
  font-size: 0.98rem;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.section {
  padding: 3.4rem 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: grid;
  grid-template-columns: minmax(0, 0.72fr) minmax(300px, 1.28fr);
  gap: 2rem;
  align-items: start;
  margin-bottom: 1.8rem;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(1.75rem, 3.2vw, 2.7rem);
  line-height: 1.12;
  letter-spacing: -0.035em;
}

.section-heading p {
  max-width: 720px;
  margin: 0;
  color: var(--muted);
}

.grid-2,
.grid-3,
.grid-4 {
  display: grid;
  gap: 1rem;
}

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

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

.grid-4 {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.card {
  min-width: 0;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.card.soft {
  background: var(--surface-2);
}

.card h3,
.card h4 {
  margin: 0 0 0.48rem;
  line-height: 1.3;
  letter-spacing: -0.02em;
}

.card p {
  margin: 0.45rem 0 0;
  color: var(--muted);
}

.card ul,
.card ol {
  margin: 0.65rem 0 0;
  padding-left: 1.2rem;
}

.card li + li {
  margin-top: 0.35rem;
}

.metric-card strong {
  display: block;
  margin-top: 0.2rem;
  font-size: clamp(1.4rem, 3vw, 2.2rem);
  line-height: 1.1;
  letter-spacing: -0.035em;
}

.metric-card .metric-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 700;
}

.metric-card .metric-note {
  margin-top: 0.55rem;
  font-size: 0.88rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.32rem;
  padding: 0.2rem 0.48rem;
  border: 1px solid currentColor;
  border-radius: 999px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.3;
  text-transform: uppercase;
  white-space: nowrap;
}

.badge.measured,
.badge.pass {
  background: var(--brand-soft);
  color: var(--brand);
}

.badge.configured {
  background: var(--blue-soft);
  color: var(--blue);
}

.badge.inferred,
.badge.warn {
  background: var(--warning-soft);
  color: var(--warning);
}

.badge.pending {
  background: var(--pending-soft);
  color: var(--pending);
}

.badge.fail {
  background: var(--danger-soft);
  color: var(--danger);
}

.callout {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.callout.warning {
  border-left-color: var(--warning);
  background: color-mix(in srgb, var(--warning-soft) 58%, var(--surface));
}

.callout.danger {
  border-left-color: var(--danger);
  background: color-mix(in srgb, var(--danger-soft) 58%, var(--surface));
}

.callout.info {
  border-left-color: var(--blue);
  background: color-mix(in srgb, var(--blue-soft) 58%, var(--surface));
}

.callout .callout-icon {
  font-weight: 900;
}

.callout h3,
.callout p {
  margin: 0;
}

.callout p + p {
  margin-top: 0.45rem;
}

.topology {
  overflow: hidden;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.topology svg {
  display: block;
  width: 100%;
  height: auto;
}

.topology .node-box {
  fill: var(--surface-2);
  stroke: var(--line);
  stroke-width: 1.5;
}

.topology .node-title {
  fill: var(--ink);
  font-family: var(--sans);
  font-size: 17px;
  font-weight: 800;
}

.topology .node-meta {
  fill: var(--muted);
  font-family: var(--mono);
  font-size: 12px;
}

.topology .mgmt-line {
  stroke: var(--blue);
  stroke-width: 3;
}

.topology .roce-line {
  stroke: var(--brand);
  stroke-width: 6;
}

.topology .line-label {
  fill: var(--muted);
  font-family: var(--sans);
  font-size: 11px;
  font-weight: 700;
}

.stepper {
  display: grid;
  gap: 0.75rem;
  counter-reset: deploy-step;
}

.step {
  counter-increment: deploy-step;
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  gap: 0.8rem;
  padding: 0.9rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.step::before {
  content: counter(deploy-step, decimal-leading-zero);
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: var(--ink);
  color: var(--surface);
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 800;
}

.step h3 {
  margin: 0;
  font-size: 1rem;
}

.step p {
  margin: 0.25rem 0 0;
  color: var(--muted);
}

.step code {
  word-break: break-word;
}

details {
  margin-top: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

details > summary {
  padding: 0.65rem 0.8rem;
  cursor: pointer;
  font-weight: 720;
  list-style-position: inside;
}

details[open] > summary {
  border-bottom: 1px solid var(--line);
}

.details-body {
  padding: 0.85rem;
}

.details-body > :first-child {
  margin-top: 0;
}

.details-body > :last-child {
  margin-bottom: 0;
}

.code-block {
  position: relative;
}

.copy-button {
  position: absolute;
  top: 0.55rem;
  right: 0.55rem;
  padding: 0.28rem 0.52rem;
  background: #22302b;
  color: #dce9e3;
  font-size: 0.72rem;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th,
td {
  padding: 0.72rem 0.8rem;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: top;
}

th {
  background: var(--surface-2);
  color: var(--muted);
  font-size: 0.74rem;
  font-weight: 800;
  letter-spacing: 0.045em;
  text-transform: uppercase;
}

tbody tr:last-child td {
  border-bottom: 0;
}

tbody tr:hover td {
  background: color-mix(in srgb, var(--brand-soft) 36%, transparent);
}

.bar-chart {
  display: grid;
  gap: 0.9rem;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.bar-row {
  display: grid;
  grid-template-columns: minmax(92px, 0.7fr) minmax(180px, 2fr) minmax(92px, 0.65fr);
  gap: 0.7rem;
  align-items: center;
}

.bar-label {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 680;
}

.bar-track {
  height: 12px;
  overflow: hidden;
  border-radius: 99px;
  background: var(--surface-3);
}

.bar-fill {
  width: var(--bar, 0%);
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}

.bar-fill.warning {
  background: linear-gradient(90deg, var(--warning), var(--accent));
}

.bar-fill.danger {
  background: linear-gradient(90deg, var(--accent), var(--danger));
}

.bar-value {
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 800;
  text-align: right;
}

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem 1rem;
  margin: 0.7rem 0 0;
  color: var(--muted);
  font-size: 0.78rem;
}

.legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

.legend i {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: var(--brand);
}

.legend i.warning {
  background: var(--warning);
}

.legend i.danger {
  background: var(--danger);
}

.analogy {
  display: grid;
  grid-template-columns: 62px 1fr;
  gap: 0.85rem;
  align-items: start;
}

.analogy-mark {
  width: 58px;
  height: 58px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
  font-size: 1.6rem;
}

.analogy h3 {
  margin: 0;
}

.analogy p {
  margin: 0.32rem 0 0;
  color: var(--muted);
}

.flow {
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0.55rem;
}

.flow-step {
  position: relative;
  flex: 1 1 130px;
  min-width: 0;
  padding: 0.75rem;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--surface);
}

.flow-step:not(:last-child)::after {
  content: "→";
  position: absolute;
  top: 50%;
  right: -0.48rem;
  z-index: 2;
  transform: translateY(-50%);
  padding: 0 0.08rem;
  background: var(--bg);
  color: var(--brand);
  font-weight: 900;
}

.flow-step strong,
.flow-step span {
  display: block;
}

.flow-step span {
  margin-top: 0.25rem;
  color: var(--muted);
  font-size: 0.8rem;
}

.compare {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.compare > div {
  padding: 1.1rem;
  background: var(--surface);
}

.compare > div + div {
  border-left: 1px solid var(--line);
}

.compare h3 {
  margin: 0 0 0.65rem;
}

.compare ul {
  margin: 0;
  padding-left: 1.2rem;
}

.checklist {
  display: grid;
  gap: 0.4rem;
  padding: 0;
  list-style: none;
}

.checklist li {
  position: relative;
  padding-left: 1.65rem;
}

.checklist li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--brand);
  font-weight: 900;
}

.checklist.pending li::before {
  content: "○";
  color: var(--pending);
}

.checklist.danger li::before {
  content: "×";
  color: var(--danger);
}

.source-list {
  display: grid;
  gap: 0.5rem;
  padding: 0;
  list-style: none;
}

.source-list a {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
}

.source-list a::after {
  content: "↗";
  color: var(--brand);
}

.source-list a:hover {
  border-color: var(--brand);
}

.site-footer {
  margin-top: 3rem;
  border-top: 1px solid var(--line);
  background: var(--surface-2);
}

.footer-wrap {
  width: min(var(--page), calc(100% - 2rem));
  margin: 0 auto;
  padding: 2rem 0;
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-wrap p {
  margin: 0;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 0.7rem;
}

.nowrap {
  white-space: nowrap;
}

.muted {
  color: var(--muted);
}

.small {
  font-size: 0.84rem;
}

.mono {
  font-family: var(--mono);
}

.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  overflow: hidden !important;
  clip: rect(1px, 1px, 1px, 1px) !important;
  white-space: nowrap !important;
}

@media (max-width: 980px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-panel {
    max-width: 680px;
  }

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

  .status-band > div:nth-child(3) {
    border-right: 0;
  }

  .status-band > div:nth-child(-n + 3) {
    border-bottom: 1px solid var(--line);
  }

  .grid-4 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 920px) {
  .nav-wrap {
    flex-wrap: wrap;
    padding: 0.6rem 0;
  }

  .menu-button {
    display: grid;
    margin-left: auto;
  }

  .site-nav {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.35rem 0 0;
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .nav-actions {
    margin-left: 0;
  }
}

@media (max-width: 760px) {
  .nav-wrap {
    flex-wrap: wrap;
    padding: 0.6rem 0;
  }

  .menu-button {
    display: grid;
    margin-left: auto;
  }

  .site-nav {
    width: 100%;
    display: none;
    flex-direction: column;
    align-items: stretch;
    padding: 0.35rem 0 0;
  }

  .site-nav[data-open="true"] {
    display: flex;
  }

  .nav-actions {
    margin-left: 0;
  }

  .section-heading {
    grid-template-columns: 1fr;
    gap: 0.7rem;
  }

  .grid-2,
  .grid-3,
  .grid-4,
  .compare {
    grid-template-columns: 1fr;
  }

  .compare > div + div {
    border-top: 1px solid var(--line);
    border-left: 0;
  }

  .bar-row {
    grid-template-columns: 1fr;
    gap: 0.3rem;
  }

  .bar-value {
    text-align: left;
  }

  .flow-step:not(:last-child)::after {
    display: none;
  }

  .footer-wrap {
    flex-direction: column;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 520px) {
  .page-shell,
  .nav-wrap,
  .footer-wrap {
    width: min(100% - 1.1rem, var(--page));
  }

  .hero {
    padding-top: 2.5rem;
  }

  .hero h1 {
    font-size: 2.35rem;
  }

  .status-band {
    grid-template-columns: 1fr 1fr;
  }

  .status-band > div,
  .status-band > div:nth-child(3) {
    border-right: 1px solid var(--line);
    border-bottom: 1px solid var(--line);
  }

  .status-band > div:nth-child(2n) {
    border-right: 0;
  }

  .status-band > div:nth-last-child(-n + 2) {
    border-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}

@media print {
  :root {
    color-scheme: light;
    --bg: #fff;
    --surface: #fff;
    --surface-2: #f3f3f3;
    --surface-3: #ddd;
    --ink: #111;
    --muted: #444;
    --line: #bbb;
    --brand: #075945;
  }

  body {
    background: #fff;
    font-size: 10.5pt;
  }

  .site-header,
  .hero-actions,
  .copy-button,
  .site-footer {
    display: none !important;
  }

  .hero,
  .section {
    padding: 1.4rem 0;
  }

  .card,
  .topology,
  .bar-chart,
  details {
    break-inside: avoid;
    box-shadow: none;
  }

  details > * {
    display: block !important;
  }

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

/* Executive edition ------------------------------------------------------- */

.executive-hero {
  padding-bottom: 2.7rem;
}

.compact-hero {
  padding-top: clamp(3rem, 6vw, 5rem);
}

.verdict-panel {
  border-top: 5px solid var(--brand);
}

.verdict-label {
  margin: 0;
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.verdict {
  margin: .55rem 0 .8rem;
  color: var(--brand);
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 880;
  letter-spacing: -.055em;
  line-height: 1.02;
}

.verdict-panel > p:not(.verdict-label) {
  color: var(--muted);
}

.executive-kpis {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.executive-kpis article {
  min-height: 210px;
  padding: 1.35rem;
  border-right: 1px solid var(--line);
}

.executive-kpis article:last-child {
  border-right: 0;
}

.executive-kpis .kpi-number {
  display: block;
  margin-bottom: .65rem;
  color: var(--brand);
  font-size: clamp(2rem, 3.6vw, 3.2rem);
  font-weight: 880;
  letter-spacing: -.055em;
  line-height: 1;
}

.executive-kpis strong {
  display: block;
  font-size: 1rem;
}

.executive-kpis p {
  margin: .55rem 0 0;
  color: var(--muted);
  font-size: .9rem;
  line-height: 1.55;
}

.executive-heading {
  align-items: end;
}

.soft-section {
  position: relative;
}

.soft-section::before {
  position: absolute;
  z-index: -1;
  inset: 1.4rem -2rem;
  border-radius: 28px;
  background: color-mix(in srgb, var(--brand-soft) 48%, transparent);
  content: "";
}

.assembly-line {
  display: grid;
  grid-template-columns: .75fr 1fr auto 1fr auto 1fr .75fr;
  gap: .7rem;
  align-items: center;
  margin: 1.8rem 0 1rem;
}

.assembly-line article,
.assembly-input,
.assembly-output {
  min-height: 126px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  text-align: center;
}

.assembly-line article {
  border-color: color-mix(in srgb, var(--brand) 45%, var(--line));
  background: linear-gradient(145deg, var(--surface), var(--brand-soft));
}

.assembly-input,
.assembly-output {
  min-height: 82px;
  color: var(--muted);
  font-weight: 760;
}

.assembly-arrow {
  color: var(--brand);
  font-size: 1.6rem;
  font-weight: 800;
}

.assembly-line strong,
.assembly-line small,
.assembly-line .stage-no {
  display: block;
}

.assembly-line .stage-no {
  margin-bottom: .3rem;
  color: var(--brand);
  font-size: .76rem;
  font-weight: 800;
}

.assembly-line small {
  margin-top: .2rem;
  color: var(--muted);
}

.device-ladder {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.device-ladder article {
  display: flex;
  min-height: 300px;
  flex-direction: column;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.device-ladder .recommended-card {
  transform: translateY(-8px);
  border: 2px solid var(--brand);
  box-shadow: var(--shadow);
}

.device-count {
  width: fit-content;
  padding: .2rem .55rem;
  border-radius: 999px;
  background: var(--ink);
  color: var(--surface);
  font-size: .82rem;
  font-weight: 800;
}

.device-ladder h3 {
  margin: 1rem 0 .45rem;
}

.device-ladder p {
  margin: 0 0 1rem;
  color: var(--muted);
}

.capability {
  display: block;
  margin-top: auto;
  padding-top: .75rem;
  border-top: 1px solid var(--line);
  font-size: .84rem;
  font-weight: 800;
}

.capability.no { color: var(--danger); }
.capability.caution { color: var(--warning); }
.capability.yes { color: var(--brand); }
.capability.future { color: var(--blue); }

.fine-print {
  margin: 1rem 0 0;
  color: var(--muted);
  font-size: .82rem;
  line-height: 1.55;
}

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

.fit-card {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  padding: 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.fit-card.fit { border-top: 4px solid var(--brand); }
.fit-card.unfit { border-top: 4px solid var(--danger); }

.fit-icon {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 50%;
  background: var(--surface-2);
  font-size: 1.2rem;
  font-weight: 900;
}

.fit-card.fit .fit-icon { color: var(--brand); }
.fit-card.unfit .fit-icon { color: var(--danger); }
.fit-card h3 { margin: 0; }
.fit-card ul { margin-bottom: 0; padding-left: 1.2rem; }

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

.traffic-card {
  padding: 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.traffic-card.green { border-top: 5px solid var(--brand); }
.traffic-card.amber { border-top: 5px solid var(--warning); }
.traffic-card.red { border-top: 5px solid var(--danger); }

.traffic-card > span {
  color: var(--muted);
  font-size: .78rem;
  font-weight: 800;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.traffic-card h3 { margin: .45rem 0; }
.traffic-card ul { margin-bottom: 0; padding-left: 1.2rem; }

.decision-section {
  display: grid;
  grid-template-columns: 1.05fr .95fr;
  gap: 2rem;
  align-items: center;
  margin: 3rem 0;
  padding: clamp(1.5rem, 4vw, 3rem);
  border: 1px solid color-mix(in srgb, var(--brand) 45%, var(--line));
  border-radius: 24px;
  background: linear-gradient(135deg, var(--brand-soft), var(--surface));
}

.decision-copy h2 {
  margin: 0;
  font-size: clamp(1.7rem, 3vw, 2.6rem);
  letter-spacing: -.035em;
  line-height: 1.15;
}

.decision-copy > p:last-child { color: var(--muted); }

.decision-steps {
  display: grid;
  gap: .7rem;
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: decision;
}

.decision-steps li {
  display: grid;
  grid-template-columns: 4.6rem 1fr;
  gap: .8rem;
  padding: .85rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.decision-steps span { color: var(--muted); font-size: .9rem; }

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

.source-grid > div {
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.source-grid p { color: var(--muted); font-size: .9rem; }
.source-grid a { font-weight: 750; }

.footer-row {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.5rem 0;
  color: var(--muted);
  font-size: .85rem;
}

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

.experience-card {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.experience-card.good { border-top: 5px solid var(--brand); }
.experience-card.caution { border-top: 5px solid var(--warning); }
.experience-card.danger { border-top: 5px solid var(--danger); }

.scenario {
  display: block;
  color: var(--muted);
  font-size: .8rem;
  font-weight: 800;
}

.experience-time {
  display: block;
  margin: .55rem 0;
  font-size: clamp(2.2rem, 4vw, 3.7rem);
  letter-spacing: -.055em;
  line-height: 1;
}

.experience-card p { min-height: 5.2rem; }
.experience-card small { color: var(--muted); }

.throughput-layout {
  display: grid;
  grid-template-columns: 1.15fr .85fr;
  gap: 1.5rem;
  align-items: center;
}

.simple-bars {
  display: grid;
  gap: 1rem;
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.simple-bar-row {
  display: grid;
  grid-template-columns: 7rem 1fr 6.5rem;
  gap: .8rem;
  align-items: center;
}

.simple-bar-row > span { color: var(--muted); font-size: .9rem; }
.simple-bar-row > strong { text-align: right; font-size: .88rem; }

.simple-bar-track {
  height: 18px;
  overflow: hidden;
  border-radius: 999px;
  background: var(--surface-2);
}

.simple-bar-track i {
  width: var(--value);
  height: 100%;
  display: block;
  border-radius: inherit;
  background: linear-gradient(90deg, var(--brand), var(--brand-2));
}

.plain-card {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.plain-card h3 { margin-top: 0; }
.plain-card p { color: var(--muted); }
.highlight-line { color: var(--brand); }

.context-ruler {
  display: flex;
  overflow: hidden;
  margin: 1.8rem 0 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.context-segment {
  min-height: 180px;
  display: flex;
  flex: var(--grow);
  flex-direction: column;
  justify-content: center;
  padding: 1.2rem;
  border-right: 1px solid color-mix(in srgb, var(--line) 65%, transparent);
}

.context-segment:last-child { border-right: 0; }
.context-segment.safe { background: color-mix(in srgb, var(--brand-soft) 56%, var(--surface)); }
.context-segment.safe-strong { background: var(--brand); color: #fff; }
.context-segment.warning { background: var(--warning-soft); }
.context-segment.blocked { background: var(--danger-soft); }

.context-segment strong {
  font-size: 2.4rem;
  letter-spacing: -.05em;
  line-height: 1;
}

.context-segment span { margin-top: .55rem; font-weight: 800; }
.context-segment small { margin-top: .25rem; opacity: .75; }

.bottleneck-grid,
.trigger-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.bottleneck-grid article,
.trigger-grid article {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.bottleneck-grid article > span,
.trigger-grid article > span {
  color: var(--brand);
  font-size: 1.4rem;
  font-weight: 900;
}

.bottleneck-grid h3,
.trigger-grid h3 { margin: .55rem 0 .35rem; }
.bottleneck-grid p,
.trigger-grid p { margin-bottom: 0; color: var(--muted); }

.executive-table th,
.executive-table td { vertical-align: middle; }
.selected-row { background: color-mix(in srgb, var(--brand-soft) 58%, transparent); }
.comparison-table td:first-child { min-width: 170px; }
.comparison-table .badge { margin-left: .45rem; }

.solution-stack {
  display: grid;
  grid-template-columns: 1fr auto 1.15fr auto 1.15fr auto 1fr;
  gap: .65rem;
  align-items: center;
}

.solution-stack > article {
  min-height: 150px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  text-align: center;
}

.solution-stack > article.gateway { border-color: var(--blue); background: var(--blue-soft); }
.solution-stack > article.cluster { border-color: var(--brand); background: var(--brand-soft); }
.solution-stack > div { color: var(--brand); font-size: 1.4rem; font-weight: 900; }
.solution-stack span { color: var(--muted); font-size: .75rem; font-weight: 800; text-transform: uppercase; }
.solution-stack strong { margin: .35rem 0; }
.solution-stack small { color: var(--muted); }

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

.roadmap article {
  min-height: 290px;
  display: flex;
  flex-direction: column;
  padding: 1.3rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.roadmap article.active { border: 2px solid var(--brand); box-shadow: var(--shadow); }
.roadmap-step { color: var(--brand); font-size: .8rem; font-weight: 850; }
.roadmap h3 { margin: .7rem 0 .3rem; }
.roadmap p { color: var(--muted); }
.roadmap strong { margin-top: auto; padding-top: .8rem; border-top: 1px solid var(--line); }

.risk-list {
  display: grid;
  gap: .7rem;
}

.risk-list article {
  display: grid;
  grid-template-columns: 3.5rem 1fr minmax(180px, .55fr);
  gap: 1rem;
  align-items: center;
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.risk-list h3,
.risk-list p { margin: 0; }
.risk-list p { color: var(--muted); font-size: .9rem; }
.risk-list > article > strong { font-size: .88rem; }

.risk-level {
  display: grid;
  min-height: 2.3rem;
  place-items: center;
  border-radius: 8px;
  font-size: .78rem;
  font-weight: 900;
}

.risk-level.high { background: var(--danger-soft); color: var(--danger); }
.risk-level.medium { background: var(--warning-soft); color: var(--warning); }
.risk-level.low { background: var(--brand-soft); color: var(--brand); }

.approval-box {
  display: grid;
  gap: .45rem;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: color-mix(in srgb, var(--surface) 82%, transparent);
}

.approval-box span { margin-top: .4rem; color: var(--muted); font-size: .78rem; font-weight: 800; }

@media (max-width: 1050px) {
  .executive-kpis,
  .device-ladder,
  .bottleneck-grid,
  .trigger-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .executive-kpis article:nth-child(2) { border-right: 0; }
  .executive-kpis article:nth-child(-n + 2) { border-bottom: 1px solid var(--line); }

  .assembly-line {
    grid-template-columns: .65fr 1fr auto 1fr auto 1fr .65fr;
  }

  .solution-stack {
    grid-template-columns: 1fr;
  }

  .solution-stack > div { transform: rotate(90deg); justify-self: center; }
}

@media (max-width: 760px) {
  .executive-kpis,
  .device-ladder,
  .fit-grid,
  .traffic-grid,
  .experience-grid,
  .roadmap,
  .source-grid,
  .decision-section,
  .throughput-layout,
  .bottleneck-grid,
  .trigger-grid {
    grid-template-columns: 1fr;
  }

  .executive-kpis article,
  .executive-kpis article:nth-child(2) {
    min-height: auto;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .executive-kpis article:last-child { border-bottom: 0; }

  .assembly-line {
    grid-template-columns: 1fr;
  }

  .assembly-arrow { transform: rotate(90deg); justify-self: center; }

  .device-ladder .recommended-card { transform: none; }

  .context-ruler { flex-direction: column; }
  .context-segment { min-height: 120px; border-right: 0; border-bottom: 1px solid var(--line); }

  .simple-bar-row { grid-template-columns: 1fr; }
  .simple-bar-row > strong { text-align: left; }

  .risk-list article { grid-template-columns: 3.2rem 1fr; }
  .risk-list > article > strong { grid-column: 2; }

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

@media print {
  .executive-kpis,
  .device-ladder,
  .experience-grid,
  .traffic-grid,
  .roadmap,
  .bottleneck-grid,
  .trigger-grid {
    break-inside: avoid;
  }
}

/* Learning and evidence pages -------------------------------------------- */

.role-paths,
.learning-nav {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.role-paths a,
.learning-nav a {
  display: flex;
  flex-direction: column;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
  color: var(--ink);
  text-decoration: none;
  transition: transform 150ms ease, border-color 150ms ease;
}

.role-paths a:hover,
.learning-nav a:hover {
  transform: translateY(-3px);
  border-color: var(--brand);
}

.role-paths span,
.learning-nav span {
  color: var(--brand);
  font-size: .78rem;
  font-weight: 850;
  text-transform: uppercase;
}

.role-paths strong,
.learning-nav strong { margin: .45rem 0; }
.role-paths small,
.learning-nav small { margin-top: auto; color: var(--muted); }

.learning-nav {
  grid-template-columns: repeat(4, minmax(0, 1fr));
  padding: 1rem 0 0;
}

.concept-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1rem;
}

.concept-grid article {
  display: flex;
  min-height: 270px;
  flex-direction: column;
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.concept-mark {
  width: fit-content;
  padding: .22rem .58rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: .78rem;
  font-weight: 850;
}

.concept-grid h3 { margin: .8rem 0 .4rem; }
.concept-grid p { color: var(--muted); }
.concept-grid small { margin-top: auto; padding-top: .7rem; border-top: 1px solid var(--line); color: var(--muted); }

.lesson-card {
  display: grid;
  grid-template-columns: .85fr 1.15fr;
  gap: 2rem;
  align-items: center;
  margin-top: 1.5rem;
  padding: clamp(1.3rem, 3vw, 2rem);
  border: 1px solid var(--line);
  border-radius: 22px;
  background: var(--surface);
}

.lesson-card.reverse { grid-template-columns: 1.15fr .85fr; }
.lesson-card h3 { margin: 0; font-size: 1.55rem; letter-spacing: -.025em; }
.lesson-card p:not(.eyebrow) { color: var(--muted); }

.moe-visual {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: .65rem;
  align-items: center;
  text-align: center;
}

.all-experts,
.active-experts {
  display: grid;
  min-height: 155px;
  place-items: center;
  align-content: center;
  border-radius: 50%;
  font-size: 2rem;
  font-weight: 900;
  line-height: 1;
}

.all-experts { background: var(--surface-2); }
.active-experts { background: var(--brand); color: #fff; }
.all-experts small,
.active-experts small { margin-top: .35rem; font-size: .72rem; font-weight: 700; }
.route-arrow { color: var(--muted); font-size: .72rem; }

.precision-stack {
  display: grid;
  gap: .55rem;
}

.precision-stack span {
  display: flex;
  min-height: 78px;
  align-items: center;
  justify-content: space-between;
  padding: 1rem;
  border-radius: 12px;
  font-size: 1.15rem;
  font-weight: 850;
}

.precision-stack small { font-size: .76rem; font-weight: 650; }
.precision-stack .fp4 { background: var(--brand); color: #fff; }
.precision-stack .fp8 { background: var(--blue-soft); color: var(--blue); }
.precision-stack .bf16 { background: var(--surface-2); }

.memory-equation {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  align-items: center;
  justify-content: center;
  margin: 1rem 0 1.5rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.memory-equation span,
.memory-equation strong {
  padding: .45rem .65rem;
  border-radius: 8px;
  background: var(--surface-2);
  font-size: .88rem;
}

.memory-equation strong { background: var(--danger-soft); color: var(--danger); }
.memory-equation b { color: var(--muted); }

.pipeline-visual {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  border-radius: 18px;
  background: var(--brand-soft);
}

.pipeline-visual strong {
  padding: 1.2rem .7rem;
  border-radius: 10px;
  background: var(--brand);
  color: #fff;
}

.pipeline-visual b { color: var(--brand); }

.request-timeline {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 1rem;
  align-items: stretch;
}

.request-timeline article {
  padding: 1.35rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.request-timeline article.prefill { border-top: 5px solid var(--warning); }
.request-timeline article.decode { border-top: 5px solid var(--brand); }
.request-timeline span { color: var(--muted); font-size: .78rem; font-weight: 850; }
.request-timeline h3 { margin: .55rem 0; }
.request-timeline p { color: var(--muted); }
.timeline-arrow { align-self: center; color: var(--brand); font-size: 1.8rem; font-weight: 900; }

.metric-dictionary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: .8rem;
  margin: 1rem 0;
}

.metric-dictionary article {
  padding: 1rem;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface);
}

.metric-dictionary strong { display: block; color: var(--brand); font-size: 1.3rem; }
.metric-dictionary span { font-weight: 800; }
.metric-dictionary p { margin-bottom: 0; color: var(--muted); font-size: .85rem; }

.capacity-formula {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 1rem;
  align-items: center;
  margin-bottom: 1.2rem;
  padding: 1.1rem;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.capacity-formula code { padding: .7rem; }
.capacity-formula strong { color: var(--brand); }

.advanced-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.advanced-grid article {
  padding: 1.2rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.advanced-grid h3 { margin-top: 0; }
.advanced-grid p { color: var(--muted); }
.advanced-grid strong { color: var(--brand); }

.expert-checklist {
  margin-top: 1rem;
  padding: 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.expert-checklist h3 { margin-top: 0; }
.expert-checklist ol { display: grid; gap: .55rem; margin: 0; padding: 0; list-style: none; counter-reset: expert; }
.expert-checklist li { display: grid; grid-template-columns: 7.5rem 1fr; gap: .8rem; padding: .7rem; border-radius: 10px; background: var(--surface-2); }
.expert-checklist span { color: var(--muted); }

.faq-list { display: grid; gap: .65rem; }
.faq-list details { border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.faq-list summary { padding: 1rem; cursor: pointer; font-weight: 800; }
.faq-list p { margin: 0; padding: 0 1rem 1rem; color: var(--muted); }

.test-proof-strip {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface);
}

.test-proof-strip div {
  padding: 1rem;
  border-right: 1px solid var(--line);
  text-align: center;
}

.test-proof-strip div:last-child { border-right: 0; }
.test-proof-strip strong { display: block; color: var(--brand); font-size: 1.55rem; }
.test-proof-strip span { color: var(--muted); font-size: .8rem; }

.tuning-journey {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: .7rem;
  align-items: center;
}

.tuning-journey article {
  min-height: 260px;
  display: flex;
  flex-direction: column;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.tuning-journey article.final { border: 2px solid var(--brand); box-shadow: var(--shadow); }
.tuning-journey > div { color: var(--brand); font-size: 1.5rem; font-weight: 900; }
.tuning-journey span { color: var(--muted); font-size: .78rem; font-weight: 850; }
.tuning-journey h3 { margin: .6rem 0 .3rem; }
.tuning-journey strong { color: var(--brand); font-size: 1.7rem; }
.tuning-journey p { margin-top: auto; color: var(--muted); font-size: .86rem; }

.network-facts {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1rem;
}

.network-facts span { padding: .6rem .75rem; border: 1px solid var(--line); border-radius: 999px; background: var(--surface); font-size: .84rem; }
.network-facts strong { color: var(--brand); }

.quality-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: .8rem;
}

.quality-grid article { padding: 1rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.quality-grid span { display: block; min-height: 2.8rem; color: var(--muted); font-size: .8rem; }
.quality-grid strong { display: block; font-size: 1.05rem; }
.quality-grid small { color: var(--brand); font-weight: 800; }

.actual-topology {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  gap: .8rem;
  align-items: center;
}

.actual-topology article { padding: 1.2rem; border: 1px solid var(--brand); border-radius: var(--radius); background: var(--brand-soft); text-align: center; }
.actual-topology > div { color: var(--brand); font-size: 1.5rem; font-weight: 900; }
.actual-topology span,
.actual-topology strong,
.actual-topology small { display: block; }
.actual-topology span { color: var(--muted); font-size: .78rem; font-weight: 800; }
.actual-topology strong { margin: .35rem 0; font-size: 1.35rem; }
.actual-topology small { color: var(--muted); }

.topology-rails {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: .8rem;
  margin-top: 1rem;
}

.topology-rails span { padding: .85rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); font-size: .85rem; }
.topology-rails strong { display: block; color: var(--brand); }

.gate-table { display: grid; gap: .65rem; }
.gate-table article { display: grid; grid-template-columns: 5rem 1fr; gap: 1rem; align-items: center; padding: .9rem; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.gate-table article > span { display: grid; min-height: 2.4rem; place-items: center; border-radius: 8px; font-size: .74rem; font-weight: 900; }
.gate-table .done > span { background: var(--brand-soft); color: var(--brand); }
.gate-table .pending > span { background: var(--warning-soft); color: var(--warning); }
.gate-table .blocked > span { background: var(--danger-soft); color: var(--danger); }
.gate-table h3,
.gate-table p { margin: 0; }
.gate-table p { color: var(--muted); font-size: .88rem; }

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

.evidence-kpis article { padding: 1.15rem; border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); }
.evidence-kpis strong { display: block; color: var(--brand); font-size: 1.8rem; letter-spacing: -.04em; }
.evidence-kpis span { font-weight: 850; }
.evidence-kpis p { margin-bottom: 0; color: var(--muted); font-size: .86rem; }

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

.evidence-links article,
.method-grid article,
.community-grid article {
  display: flex;
  flex-direction: column;
  padding: 1.15rem;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
}

.evidence-type,
.platform {
  width: fit-content;
  padding: .2rem .5rem;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand);
  font-size: .75rem;
  font-weight: 850;
}

.platform.bili { background: #ffe2ec; color: #d94b7b; }
.platform.csdn { background: #fee5df; color: #c84426; }
.evidence-links h3,
.method-grid h3,
.community-grid h3 { margin: .7rem 0 .35rem; }
.evidence-links p,
.method-grid p,
.community-grid p { color: var(--muted); font-size: .88rem; }
.evidence-links a,
.community-grid a { margin-top: auto; font-weight: 800; }
.internal-only { margin-top: auto; color: var(--muted); font-size: .76rem; font-weight: 750; }
.method-grid > article > span { color: var(--brand); font-size: 1.25rem; font-weight: 900; }

@media (max-width: 1050px) {
  .role-paths,
  .concept-grid,
  .quality-grid,
  .learning-nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .evidence-links,
  .method-grid,
  .community-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 760px) {
  .role-paths,
  .learning-nav,
  .concept-grid,
  .lesson-card,
  .lesson-card.reverse,
  .request-timeline,
  .metric-dictionary,
  .capacity-formula,
  .advanced-grid,
  .test-proof-strip,
  .tuning-journey,
  .quality-grid,
  .actual-topology,
  .topology-rails,
  .evidence-kpis,
  .evidence-links,
  .method-grid,
  .community-grid {
    grid-template-columns: 1fr;
  }

  .timeline-arrow,
  .tuning-journey > div,
  .actual-topology > div { transform: rotate(90deg); justify-self: center; }

  .test-proof-strip div { border-right: 0; border-bottom: 1px solid var(--line); }
  .test-proof-strip div:last-child { border-bottom: 0; }
  .expert-checklist li { grid-template-columns: 1fr; }
  .gate-table article { grid-template-columns: 4.5rem 1fr; }
}