.i138 {
  --i138-red: #a61919;
  --i138-rule: color-mix(in srgb, currentColor 18%, transparent);
  background: var(--surface);
  color: var(--ink);
}

.i138-hero {
  width: min(calc(100% - 32px), 1320px);
  min-height: min(820px, 88vh);
  margin: 0 auto;
  padding: clamp(42px, 7vw, 96px) 0 clamp(62px, 10vw, 132px);
  display: grid;
  grid-template-columns: minmax(88px, .28fr) minmax(0, 1.45fr) minmax(230px, .55fr);
  gap: clamp(28px, 6vw, 92px);
  align-items: end;
  border-bottom: 1px solid var(--i138-rule);
}

.i138-hero__index,
.i138-hero__principle {
  align-self: stretch;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.i138-hero__index span,
.i138-kicker,
.i138-hero__principle span,
.i138-standing span,
.i138-chapter p,
.i138-provenance > span {
  color: var(--muted);
  font-size: .7rem;
  font-weight: 780;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.i138-hero__index strong {
  color: var(--i138-red);
  font: 300 clamp(4rem, 10vw, 9rem)/.8 Georgia, "Times New Roman", serif;
}

.i138-hero h1 {
  max-width: 900px;
  margin: 18px 0 30px;
  font: 500 clamp(4rem, 9vw, 8.8rem)/.82 Georgia, "Times New Roman", serif;
  letter-spacing: -.075em;
}

.i138-deck {
  max-width: 760px;
  margin: 0;
  font: 400 clamp(1.28rem, 2.2vw, 2rem)/1.42 Georgia, "Times New Roman", serif;
}

.i138-standing {
  max-width: 760px;
  margin: clamp(36px, 6vw, 72px) 0 0;
  padding: 22px 0 0 24px;
  border-top: 1px solid var(--i138-rule);
  border-left: 3px solid var(--i138-red);
  line-height: 1.6;
}

.i138-standing span {
  display: block;
  margin-bottom: 8px;
  color: var(--i138-red);
}

.i138-hero__principle {
  min-height: 220px;
  padding-top: 18px;
  border-top: 4px solid var(--ink);
}

.i138-hero__principle strong {
  font: 500 clamp(1.35rem, 2vw, 2rem)/1.18 Georgia, "Times New Roman", serif;
}

.i138-jump {
  position: sticky;
  top: var(--header-height, 0);
  z-index: 5;
  display: flex;
  justify-content: center;
  gap: 6px;
  overflow-x: auto;
  padding: 10px 16px;
  border-bottom: 1px solid var(--i138-rule);
  background: color-mix(in srgb, var(--surface) 94%, transparent);
  backdrop-filter: blur(14px);
}

.i138-jump a {
  flex: 0 0 auto;
  padding: 8px 12px;
  color: var(--muted);
  font-size: .72rem;
  font-weight: 720;
  text-decoration: none;
}

.i138-jump a:hover,
.i138-jump a:focus-visible {
  color: var(--i138-red);
}

.i138-reading {
  padding-top: clamp(52px, 9vw, 120px);
}

.i138-reading > section {
  margin: clamp(54px, 8vw, 96px) 0;
}

.i138-reading > section h2 {
  max-width: 780px;
  font: 500 clamp(2rem, 4vw, 3.7rem)/1 Georgia, "Times New Roman", serif;
  letter-spacing: -.045em;
}

.i138-reading > section p,
.i138-reading > section li {
  font-size: clamp(1.05rem, 1.3vw, 1.22rem);
  line-height: 1.76;
}

.i138-reading > section blockquote {
  margin-inline: 0;
  border-left-color: var(--i138-red);
  font-family: Georgia, "Times New Roman", serif;
}

.i138-chapter {
  width: min(1120px, calc(100% - 32px));
  margin: clamp(90px, 14vw, 180px) auto 60px;
  display: grid;
  grid-template-columns: .3fr 1.7fr;
  gap: 30px;
  padding-top: 18px;
  border-top: 1px solid var(--ink);
}

.i138-chapter span {
  color: var(--i138-red);
  font: 300 clamp(2.8rem, 5vw, 5rem)/1 Georgia, "Times New Roman", serif;
}

.i138-chapter p {
  margin: 8px 0 0;
  color: var(--ink);
}

.i138-reading #early-bbs-and-shell-systems,
.i138-reading #immortal,
.i138-reading #ghostmesh,
.i138-reading #vicompiler,
.i138-reading #tony-brain,
.i138-reading #shareplane,
.i138-reading #control-tower {
  position: relative;
  padding-left: clamp(28px, 5vw, 70px);
  border-left: 1px solid var(--i138-rule);
}

.i138-reading #early-bbs-and-shell-systems::before,
.i138-reading #immortal::before,
.i138-reading #ghostmesh::before,
.i138-reading #vicompiler::before,
.i138-reading #tony-brain::before,
.i138-reading #shareplane::before,
.i138-reading #control-tower::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 10px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--i138-red);
}

.i138-provenance,
.i138-disclosure {
  width: min(1120px, calc(100% - 32px));
  margin: clamp(90px, 12vw, 160px) auto;
  padding: clamp(28px, 5vw, 60px);
  border: 1px solid var(--i138-rule);
  background: color-mix(in srgb, var(--surface) 96%, var(--ink));
}

.i138-provenance h2 {
  max-width: 780px;
  margin: 16px 0 42px;
  font: 500 clamp(2rem, 4vw, 3.4rem)/1.02 Georgia, "Times New Roman", serif;
}

.i138-provenance ol {
  display: grid;
  grid-template-columns: repeat(8, minmax(110px, 1fr));
  gap: 1px;
  margin: 0;
  padding: 0;
  overflow-x: auto;
  list-style: none;
  background: var(--i138-rule);
}

.i138-provenance li {
  min-height: 120px;
  padding: 18px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
}

.i138-provenance li span {
  color: var(--i138-red);
  font-size: .72rem;
}

.i138-disclosure summary {
  cursor: pointer;
  list-style: none;
}

.i138-disclosure summary span {
  display: block;
  color: var(--i138-red);
  font-size: .7rem;
  font-weight: 780;
  letter-spacing: .14em;
  text-transform: uppercase;
}

.i138-disclosure summary strong {
  display: block;
  margin-top: 12px;
  font: 500 clamp(1.8rem, 3vw, 3rem)/1.05 Georgia, "Times New Roman", serif;
}

.i138-machine-counts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 1px;
  margin: 34px 0;
  padding: 1px;
  list-style: none;
  background: var(--i138-rule);
}

.i138-machine-counts li {
  padding: 20px;
  display: flex;
  flex-direction: column;
  background: var(--surface);
}

.i138-machine-counts strong {
  color: var(--i138-red);
  font: 400 2.2rem/1 Georgia, "Times New Roman", serif;
}

.i138-disclosure nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
}

.i138-disclosure a {
  color: var(--ink);
  font-weight: 700;
  text-decoration: none;
}

@media (max-width: 900px) {
  .i138-hero {
    grid-template-columns: 80px 1fr;
  }

  .i138-hero__principle {
    grid-column: 2;
    min-height: 150px;
  }

  .i138-provenance ol {
    grid-template-columns: repeat(4, minmax(140px, 1fr));
  }
}

@media (max-width: 620px) {
  .i138-hero {
    min-height: 0;
    grid-template-columns: 1fr;
    gap: 34px;
    padding-top: 32px;
  }

  .i138-hero__index {
    min-height: 74px;
    flex-direction: row;
    align-items: flex-start;
  }

  .i138-hero__index strong {
    font-size: 4rem;
  }

  .i138-hero h1 {
    font-size: clamp(3.6rem, 18vw, 5.4rem);
  }

  .i138-hero__principle {
    grid-column: auto;
  }

  .i138-jump {
    justify-content: flex-start;
  }

  .i138-chapter {
    grid-template-columns: 70px 1fr;
  }

  .i138-provenance ol {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .i138 *,
  .i138 *::before,
  .i138 *::after {
    scroll-behavior: auto !important;
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}

@media print {
  .i138 {
    --i138-red: #000;
    background: #fff;
    color: #000;
  }

  .i138-hero {
    min-height: 0;
    display: block;
    padding: 0 0 32pt;
  }

  .i138-hero__index,
  .i138-hero__principle,
  .i138-jump,
  .sp-provisional {
    display: none !important;
  }

  .i138-reading,
  .i138-reading > section {
    width: 100%;
    max-width: none;
    margin: 22pt 0;
    padding: 0;
  }

  .i138-chapter,
  .i138-provenance,
  .i138-disclosure {
    width: 100%;
    margin: 28pt 0 14pt;
    transform: none;
    break-inside: avoid;
  }

  .i138-disclosure > * {
    display: block !important;
  }

  a {
    color: #000 !important;
    text-decoration: underline;
  }
}