.eg19,
.eg19 * {
  box-sizing: border-box;
}

.eg19 {
  --ink: #17202b;
  --blue: #153c62;
  --blue-light: #e7f0f7;
  --orange: #d97706;
  --paper: #f4f1e9;
  --line: #cbd3d9;
  --teal: #0f766e;
  --red: #b42318;
  --white: #ffffff;
  max-width: 1180px;
  margin: 0 auto;
  color: var(--ink);
  font-family: Arial, Helvetica, sans-serif;
  font-size: 16px;
  line-height: 1.65;
}

.eg19 h2,
.eg19 h3 {
  margin-top: 0;
  color: var(--ink);
  line-height: 1.3;
}

.eg19 h2 {
  font-size: 30px;
}

.eg19 h3 {
  font-size: 20px;
}

.eg19 p {
  margin: 0 0 15px;
}

.eg19 a {
  color: #075b9c;
  text-decoration: none;
}

.eg19 a:hover {
  text-decoration: underline;
}

.eg19 .section {
  padding: 50px 0;
  border-bottom: 1px solid var(--line);
}

.eg19 .section-intro {
  max-width: 870px;
  color: #5b6672;
}

.eg19 .hero {
  display: grid;
  grid-template-columns: 1.35fr .65fr;
  gap: 44px;
  align-items: center;
  padding: 48px;
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(21,60,98,.055) 1px, transparent 1px),
    linear-gradient(90deg, rgba(21,60,98,.055) 1px, transparent 1px);
  background-size: 24px 24px;
  border-top: 6px solid var(--orange);
}

.eg19 .eyebrow {
  margin-bottom: 12px;
  color: var(--orange);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 1.4px;
}

.eg19 .hero h2 {
  margin-bottom: 18px;
  font-size: 36px;
}

.eg19 .answer {
  padding: 21px 24px;
  background: rgba(255,255,255,.82);
  border-left: 5px solid var(--blue);
  font-size: 17px;
}

.eg19 .ratio-wrap {
  text-align: center;
}

.eg19 .ratio {
  position: relative;
  width: 100%;
  max-width: 310px;
  aspect-ratio: 5 / 4;
  margin: 0 auto;
  color: var(--white);
  background: linear-gradient(145deg, #213b57, #0f2031);
  border: 11px solid var(--ink);
  box-shadow: 14px 14px 0 rgba(217,119,6,.18);
}

.eg19 .ratio-content {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.eg19 .ratio-content strong {
  font-size: 43px;
  line-height: 1;
}

.eg19 .ratio-content span {
  margin-top: 10px;
  color: #cfe2ef;
  font-size: 14px;
  letter-spacing: .8px;
}

.eg19 .ratio-label {
  display: inline-block;
  margin-top: 18px;
  padding: 7px 12px;
  color: var(--white);
  background: var(--teal);
  font-size: 12px;
  font-weight: 700;
}

.eg19 .identity {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--line);
  border-top: 0;
}

.eg19 .identity div {
  padding: 20px;
  background: var(--white);
  border-right: 1px solid var(--line);
}

.eg19 .identity div:last-child {
  border-right: 0;
}

.eg19 .identity span {
  display: block;
  margin-bottom: 4px;
  color: #68727e;
  font-size: 12px;
  text-transform: uppercase;
}

.eg19 .identity strong {
  color: var(--blue);
}

.eg19 .system-stack {
  margin-top: 28px;
  border: 1px solid var(--line);
}

.eg19 .system-layer {
  display: grid;
  grid-template-columns: 70px 220px 1fr 130px;
  align-items: center;
  min-height: 86px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--line);
}

.eg19 .system-layer:last-child {
  border-bottom: 0;
}

.eg19 .system-layer:nth-child(odd) {
  background: #f7f9fb;
}

.eg19 .layer-number {
  color: #94a0ac;
  font-family: Consolas, monospace;
  font-size: 13px;
}

.eg19 .layer-title {
  color: var(--blue);
  font-weight: 700;
}

.eg19 .included,
.eg19 .external {
  display: inline-block;
  padding: 5px 8px;
  color: var(--white);
  text-align: center;
  font-size: 11px;
  font-weight: 700;
}

.eg19 .included {
  background: var(--teal);
}

.eg19 .external {
  background: #66717d;
}

.eg19 .signal-note {
  margin-top: 18px;
  padding: 17px 20px;
  color: #493100;
  background: #fff4d9;
  border-left: 5px solid var(--orange);
}

.eg19 .rail {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 32px;
}

.eg19 .rail:before {
  position: absolute;
  top: 22px;
  right: 0;
  left: 0;
  height: 2px;
  background: var(--orange);
  content: "";
}

.eg19 .rail article {
  position: relative;
  padding: 62px 21px 23px;
  background: var(--white);
  border: 1px solid var(--line);
}

.eg19 .rail .step {
  position: absolute;
  top: 0;
  left: 18px;
  z-index: 1;
  padding: 9px 12px;
  color: var(--white);
  background: var(--blue);
  font-weight: 700;
}

.eg19 .rail p {
  color: #5e6873;
}

.eg19 .ledger {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 28px;
  border: 1px solid var(--line);
}

.eg19 .ledger-column {
  padding: 29px;
}

.eg19 .ledger-column.confirmed {
  background: #eaf5f2;
  border-top: 5px solid var(--teal);
}

.eg19 .ledger-column.open {
  background: #fff7e7;
  border-top: 5px solid var(--orange);
}

.eg19 .ledger dl {
  display: grid;
  grid-template-columns: 42% 58%;
  margin: 0;
}

.eg19 .ledger dt,
.eg19 .ledger dd {
  margin: 0;
  padding: 11px 0;
  border-bottom: 1px solid rgba(23,32,43,.14);
}

.eg19 .ledger dt {
  padding-right: 13px;
  font-weight: 700;
}

.eg19 .context {
  display: grid;
  gap: 14px;
  margin-top: 27px;
}

.eg19 .context article {
  display: grid;
  grid-template-columns: 190px 1fr 1fr 1fr;
  border: 1px solid var(--line);
  background: var(--white);
}

.eg19 .context h3,
.eg19 .context p {
  margin: 0;
  padding: 18px;
}

.eg19 .context h3 {
  color: var(--white);
  background: var(--blue);
}

.eg19 .context p {
  border-right: 1px solid var(--line);
}

.eg19 .context p:last-child {
  border-right: 0;
}

.eg19 .context em {
  display: block;
  margin-bottom: 4px;
  color: var(--orange);
  font-size: 12px;
  font-style: normal;
  font-weight: 700;
  text-transform: uppercase;
}

.eg19 .release {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  margin-top: 28px;
  overflow: hidden;
  background: var(--line);
  border: 1px solid var(--line);
}

.eg19 .release article {
  min-height: 175px;
  padding: 20px;
  background: var(--white);
}

.eg19 .release b {
  display: block;
  margin-bottom: 12px;
  color: var(--orange);
  font-family: Consolas, monospace;
  font-size: 22px;
}

.eg19 .release strong {
  display: block;
  margin-bottom: 8px;
  color: var(--blue);
}

.eg19 .lifecycle {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 18px;
  margin-top: 26px;
}

.eg19 .lifecycle article {
  padding: 24px;
  background: var(--blue-light);
  border-left: 4px solid var(--blue);
}

.eg19 .boundary {
  padding: 31px;
  color: var(--white);
  background: var(--ink);
  border-top: 5px solid var(--red);
}

.eg19 .boundary h2 {
  color: var(--white);
}

.eg19 .boundary p {
  color: #e3e8ed;
}

.eg19 .links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.eg19 .links a {
  display: inline-block;
  padding: 10px 14px;
  color: #173b5c;
  background: #e7f1f8;
  border: 1px solid #bdd1df;
  font-weight: 700;
}

.eg19 details {
  margin-bottom: 10px;
  background: var(--white);
  border: 1px solid var(--line);
}

.eg19 summary {
  padding: 16px 18px;
  color: var(--blue);
  cursor: pointer;
  font-weight: 700;
}

.eg19 details p {
  padding: 0 18px 17px;
  color: #5e6873;
}

.eg19 .cta {
  padding: 42px;
  color: var(--white);
  background: linear-gradient(105deg, #153c62, #0f766e);
}

.eg19 .cta h2 {
  color: var(--white);
}

.eg19 .cta p {
  max-width: 860px;
  color: #e2edf1;
}

.eg19 .buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 21px;
}

.eg19 .button {
  display: inline-block;
  padding: 12px 18px;
  color: #17202b;
  background: #fbbf24;
  font-weight: 700;
}

.eg19 .button.secondary {
  color: var(--white);
  background: transparent;
  border: 1px solid #c5dce4;
}

@media (max-width: 900px) {
  .eg19 .hero,
  .eg19 .ledger {
    grid-template-columns: 1fr;
  }

  .eg19 .identity,
  .eg19 .rail,
  .eg19 .release,
  .eg19 .lifecycle {
    grid-template-columns: repeat(2, 1fr);
  }

  .eg19 .rail:before {
    display: none;
  }

  .eg19 .context article {
    grid-template-columns: 1fr;
  }

  .eg19 .context p {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }
}

@media (max-width: 620px) {
  .eg19 .hero {
    padding: 31px 21px;
  }

  .eg19 .hero h2 {
    font-size: 29px;
  }

  .eg19 .identity,
  .eg19 .rail,
  .eg19 .release,
  .eg19 .lifecycle {
    grid-template-columns: 1fr;
  }

  .eg19 .identity div {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .eg19 .system-layer {
    grid-template-columns: 45px 1fr;
    gap: 7px;
  }

  .eg19 .system-layer p,
  .eg19 .system-layer .included,
  .eg19 .system-layer .external {
    grid-column: 2;
  }

  .eg19 .ledger dl {
    grid-template-columns: 1fr;
  }

  .eg19 .ledger dd {
    padding-top: 0;
  }

  .eg19 .cta {
    padding: 31px 21px;
  }
}