@font-face {
  font-family: "IBM Plex Sans Condensed";
  src: url("fonts/ibm-plex/IBMPlexSansCondensed-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Sans Condensed";
  src: url("fonts/ibm-plex/IBMPlexSansCondensed-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex/IBMPlexMono-Regular.woff2") format("woff2");
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: "IBM Plex Mono";
  src: url("fonts/ibm-plex/IBMPlexMono-SemiBold.woff2") format("woff2");
  font-weight: 600;
  font-display: swap;
}

:root {
  color-scheme: dark;
  --bg: #071019;
  --surface: #0b1621;
  --raised: #101f2d;
  --active: #132b38;
  --text: #dbe5e9;
  --muted: #8da0aa;
  --border: #243744;
  --strong: #36505e;
  --brand: #13c4c8;
  --brand-text: #6fe6e5;
  --warning: #f0c75e;
  --focus: #53dfe1;
  --mono: "IBM Plex Mono", monospace;
  font-family: "IBM Plex Sans Condensed", "Arial Narrow", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  min-width: 320px;
  margin: 0;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

a {
  color: inherit;
  text-underline-offset: 0.2em;
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 3px;
}

.skip {
  position: fixed;
  top: 1rem;
  left: -999px;
  z-index: 20;
  padding: 0.6rem 0.8rem;
  background: var(--text);
  color: var(--bg);
}

.skip:focus {
  left: 1rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  min-height: 4rem;
  align-items: center;
  justify-content: space-between;
  padding: 0 clamp(1rem, 4vw, 4rem);
  border-bottom: 1px solid var(--strong);
  background: rgb(7 16 25 / 96%);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-decoration: none;
  text-transform: uppercase;
}

.brand img {
  width: 1.75rem;
  height: 2rem;
  object-fit: contain;
}

.site-header nav {
  display: flex;
  gap: clamp(0.75rem, 2.5vw, 1.75rem);
}

.site-header nav a {
  padding-block: 0.5rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-decoration: none;
  text-transform: uppercase;
}

.site-header nav a:hover {
  color: var(--brand-text);
}

main,
footer {
  max-width: 100rem;
  margin-inline: auto;
  border-inline: 1px solid var(--strong);
}

.hero {
  display: grid;
  grid-template-columns: minmax(22rem, 0.85fr) minmax(31rem, 1.15fr);
  position: relative;
}

.classification {
  grid-column: 1 / -1;
  display: flex;
  border-bottom: 1px solid var(--strong);
}

.classification span {
  flex: 1;
  padding: 0.65rem 1rem;
  border-right: 1px solid var(--border);
  color: var(--brand-text);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
}

.classification span:last-child {
  border-right: 0;
  color: var(--warning);
}

.hero-copy {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: clamp(2rem, 5vw, 5rem);
  border-right: 1px solid var(--strong);
}

.eyebrow,
.manual-section > header p,
.choice-grid section > span,
.install-paths section > span,
.mapping > span,
.requirements > span {
  margin: 0;
  color: var(--brand-text);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
}

.hero h1 {
  max-width: 15ch;
  margin: 0.8rem 0 1.25rem;
  font-size: clamp(2.8rem, 5.4vw, 5.6rem);
  line-height: 0.94;
  letter-spacing: -0.02em;
  text-transform: uppercase;
}

.audience {
  margin: 0 0 0.7rem;
  color: var(--text);
  font-size: 1.15rem;
  font-weight: 600;
}

.hero-summary {
  max-width: 57ch;
  margin: 0;
  color: var(--muted);
  font-size: 1.05rem;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-top: 1.4rem;
}

.button {
  display: inline-flex;
  min-height: 2.8rem;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1rem;
  border: 1px solid var(--strong);
  background: var(--surface);
  font-family: var(--mono);
  font-size: 0.72rem;
  font-weight: 600;
  text-decoration: none;
  text-transform: uppercase;
}

.button:hover,
.button.primary {
  border-color: var(--brand);
  background: var(--active);
  color: var(--brand-text);
}

.button.primary:hover {
  background: #17404b;
  color: #a7ffff;
}

.release-note {
  max-width: 57ch;
  margin: 1.25rem 0 0;
  padding-left: 0.75rem;
  border-left: 2px solid var(--warning);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.7rem;
}

.release-note strong {
  color: var(--warning);
  text-transform: uppercase;
}

.console-frame {
  align-self: center;
  min-width: 0;
  margin: clamp(1rem, 3vw, 3rem);
  border: 1px solid var(--strong);
  background: var(--surface);
}

.console-label,
.console-frame figcaption {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0.75rem;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.console-label {
  border-bottom: 1px solid var(--border);
}

.console-frame img {
  display: block;
  width: 100%;
  height: auto;
}

.console-frame figcaption {
  border-top: 1px solid var(--border);
  color: var(--brand-text);
}

.trust-strip {
  grid-column: 1 / -1;
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--strong);
  list-style: none;
}

.trust-strip li {
  display: grid;
  min-height: 3.5rem;
  place-items: center;
  padding: 0.7rem;
  border-right: 1px solid var(--border);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.62rem;
  text-align: center;
  text-transform: uppercase;
}

.trust-strip li:last-child {
  border-right: 0;
}

.problem {
  display: grid;
  grid-template-columns: minmax(12rem, 0.55fr) minmax(20rem, 1.25fr) minmax(20rem, 1fr);
  align-items: start;
  gap: clamp(1.5rem, 4vw, 4rem);
  padding: clamp(2rem, 5vw, 4.5rem);
  border-top: 1px solid var(--strong);
  background: var(--surface);
}

.problem h2 {
  max-width: 18ch;
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.8rem);
  line-height: 1;
  text-transform: uppercase;
}

.problem > p:last-child {
  margin: 0;
  color: var(--muted);
  font-size: 1.1rem;
}

.manual-section {
  border-top: 1px solid var(--strong);
  scroll-margin-top: 4rem;
}

.manual-section > header {
  display: grid;
  grid-template-columns: 6rem 1fr;
  border-bottom: 1px solid var(--strong);
}

.manual-section > header > span {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--border);
  color: var(--brand-text);
  font-family: var(--mono);
}

.manual-section > header > div {
  padding: 2rem;
}

.manual-section h2 {
  margin: 0.25rem 0 0;
  font-size: clamp(1.5rem, 3vw, 2.7rem);
  line-height: 1.05;
  text-transform: uppercase;
}

.ledger {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  margin: 0;
  padding: 0;
  list-style: none;
}

.ledger li {
  min-height: 13rem;
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.ledger li > span,
.sequence > li > span,
.reference span {
  color: var(--brand-text);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.1em;
}

.ledger h3,
.sequence h3,
.choice-grid h3,
.install-paths h3 {
  margin: 1.5rem 0 0.5rem;
  text-transform: uppercase;
}

.ledger p,
.sequence p,
.prose-block p,
.choice-grid li,
.comparison-intro p,
.status-grid p,
.socket-warning p {
  color: var(--muted);
}

.split-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.prose-block,
.mapping {
  padding: clamp(1.5rem, 4vw, 4rem);
}

.prose-block {
  border-right: 1px solid var(--border);
}

.prose-block p {
  max-width: 52ch;
  margin: 0 0 1rem;
  font-size: 1.1rem;
}

.mapping {
  align-self: center;
}

.mapping dl {
  margin: 1rem 0 0;
  border: 1px solid var(--border);
  background: var(--surface);
  font-family: var(--mono);
  font-size: 0.72rem;
}

.mapping dl div {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-bottom: 1px solid var(--border);
}

.mapping dl div:last-child {
  border-bottom: 0;
}

.mapping dt,
.mapping dd {
  margin: 0;
  padding: 0.75rem;
}

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

.mapping dd {
  border-left: 1px solid var(--border);
  color: var(--text);
}

.mapping .mapping-result {
  background: var(--active);
}

.mapping .mapping-result dt,
.mapping .mapping-result dd {
  color: var(--brand-text);
}

.comparison-intro {
  padding: 2rem clamp(1.5rem, 4vw, 4rem);
  border-bottom: 1px solid var(--border);
}

.comparison-intro p {
  max-width: 70ch;
  margin: 0;
  font-size: 1.12rem;
}

.choice-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
}

.choice-grid section {
  padding: clamp(1.5rem, 4vw, 3rem);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.choice-grid section:last-child {
  border-right: 0;
}

.choice-grid h3 {
  margin-top: 0.8rem;
  font-size: 1.4rem;
}

.choice-grid ul {
  margin: 1rem 0 0;
  padding-left: 1.2rem;
}

.choice-grid li {
  margin-block: 0.45rem;
}

.tool-fit {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  margin: 0;
}

.tool-fit div {
  padding: 1.4rem;
  border-right: 1px solid var(--border);
}

.tool-fit div:last-child {
  border-right: 0;
  background: var(--active);
}

.tool-fit dt {
  color: var(--brand-text);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

.tool-fit dd {
  margin: 0.55rem 0 0;
  color: var(--muted);
}

.status-section > header > span,
.status-section > header p {
  color: var(--warning);
}

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

.status-grid > div {
  min-height: 10rem;
  padding: clamp(1.5rem, 4vw, 3rem);
  border-right: 1px solid var(--border);
}

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

.status-grid strong,
.socket-warning strong {
  color: var(--warning);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
}

.requirements {
  display: grid;
  grid-template-columns: 10rem 1fr;
  align-items: center;
  padding: 1.25rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

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

.sequence {
  margin: 0;
  padding: 0;
  list-style: none;
}

.sequence > li {
  display: grid;
  grid-template-columns: 6rem 1fr;
  border-bottom: 1px solid var(--border);
}

.sequence > li > span {
  display: grid;
  place-items: center;
  border-right: 1px solid var(--border);
}

.sequence > li > div {
  min-width: 0;
  padding: 2rem;
}

.sequence h3 {
  margin-top: 0;
}

pre {
  max-width: 100%;
  margin: 1rem 0 0;
  padding: 1rem;
  border: 1px solid var(--border);
  background: var(--surface);
  overflow-x: auto;
}

code {
  font-family: var(--mono);
  font-size: 0.78rem;
}

.install-paths {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}

.install-paths section:first-child {
  padding-right: 2rem;
  border-right: 1px solid var(--border);
}

.install-paths h3 {
  margin-top: 0.8rem;
}

.socket-warning {
  display: grid;
  grid-template-columns: 12rem 1fr auto;
  align-items: start;
  gap: 1.5rem;
  padding: 1.5rem 2rem;
  border-left: 3px solid var(--warning);
  background: #171a1c;
}

.socket-warning p {
  margin: 0;
}

.socket-warning a {
  color: var(--text);
  font-family: var(--mono);
  font-size: 0.68rem;
  text-transform: uppercase;
}

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

.reference a {
  display: grid;
  gap: 0.6rem;
  padding: 1.5rem;
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}

.reference a:hover {
  background: var(--active);
  color: var(--brand-text);
}

footer {
  display: flex;
  justify-content: space-between;
  padding: 1rem;
  border-top: 1px solid var(--strong);
  border-bottom: 1px solid var(--strong);
  color: var(--muted);
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
}

@media (max-width: 1050px) {
  .hero {
    grid-template-columns: 1fr;
  }

  .hero-copy {
    border-right: 0;
    border-bottom: 1px solid var(--strong);
  }

  .hero h1 {
    max-width: 18ch;
  }

  .problem {
    grid-template-columns: 1fr 1.2fr;
  }

  .problem .eyebrow {
    grid-column: 1 / -1;
  }

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

  .trust-strip li:nth-child(4) {
    border-right: 0;
  }

  .trust-strip li:nth-child(-n + 4) {
    border-bottom: 1px solid var(--border);
  }

  .ledger,
  .reference {
    grid-template-columns: 1fr 1fr;
  }

  .tool-fit {
    grid-template-columns: 1fr 1fr;
  }

  .tool-fit div:nth-child(-n + 2) {
    border-bottom: 1px solid var(--border);
  }

  .tool-fit div:nth-child(2) {
    border-right: 0;
  }

  .socket-warning {
    grid-template-columns: 10rem 1fr;
  }

  .socket-warning a {
    grid-column: 2;
  }
}

@media (max-width: 700px) {
  .site-header {
    flex-wrap: wrap;
    padding: 0.55rem 1rem;
  }

  .site-header nav {
    width: 100%;
    justify-content: space-between;
    border-top: 1px solid var(--border);
  }

  .site-header nav a {
    font-size: 0.6rem;
  }

  .classification span {
    padding: 0.55rem 0.45rem;
    font-size: 0.52rem;
    text-align: center;
  }

  .hero-copy {
    padding: 3rem 1.25rem;
  }

  .hero h1 {
    font-size: clamp(2.7rem, 14vw, 4.2rem);
  }

  .console-frame {
    margin: 1rem;
  }

  .console-label span:last-child {
    display: none;
  }

  .console-frame figcaption {
    justify-content: space-around;
    gap: 0.4rem;
    font-size: 0.48rem;
  }

  .trust-strip {
    grid-template-columns: 1fr 1fr;
  }

  .trust-strip li,
  .trust-strip li:nth-child(4) {
    border-right: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
  }

  .trust-strip li:nth-child(even) {
    border-right: 0;
  }

  .trust-strip li:last-child {
    grid-column: 1 / -1;
    border-right: 0;
  }

  .problem,
  .split-content,
  .choice-grid,
  .status-grid,
  .install-paths {
    grid-template-columns: 1fr;
  }

  .problem {
    padding: 2.5rem 1.25rem;
  }

  .problem .eyebrow {
    grid-column: auto;
  }

  .manual-section {
    scroll-margin-top: 6.5rem;
  }

  .manual-section > header {
    grid-template-columns: 3rem 1fr;
  }

  .manual-section > header > div {
    padding: 1.25rem;
  }

  .ledger,
  .reference,
  .tool-fit {
    grid-template-columns: 1fr;
  }

  .ledger li {
    min-height: 0;
  }

  .prose-block {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .mapping dl div {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  }

  .mapping dt,
  .mapping dd {
    overflow-wrap: anywhere;
  }

  .choice-grid section,
  .status-grid > div,
  .tool-fit div {
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .requirements {
    grid-template-columns: 1fr;
    gap: 0.6rem;
    padding: 1.25rem;
  }

  .sequence > li {
    grid-template-columns: 3rem minmax(0, 1fr);
  }

  .sequence > li > div {
    padding: 1.25rem;
  }

  .install-paths {
    gap: 1.5rem;
  }

  .install-paths section:first-child {
    padding: 0 0 1.5rem;
    border-right: 0;
    border-bottom: 1px solid var(--border);
  }

  .socket-warning {
    grid-template-columns: 1fr;
    gap: 0.8rem;
    padding: 1.25rem;
  }

  .socket-warning a {
    grid-column: auto;
  }

  footer {
    flex-direction: column;
    gap: 0.75rem;
  }
}

@media (max-width: 370px) {
  .brand span {
    font-size: 0.85rem;
  }

  .site-header nav a {
    font-size: 0.55rem;
  }

  .actions .button {
    width: 100%;
  }
}

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

  *,
  *::before,
  *::after {
    animation-duration: 0ms !important;
    transition-duration: 0ms !important;
  }
}