.career-credit-book {
  padding: clamp(4rem, 8vw, 7rem) 0;
  border-top: var(--border-thread);
  background: var(--oneshot-cream);
}

.credit-book-shell {
  overflow: hidden;
  color: var(--oneshot-navy);
  background: var(--oneshot-cream);
  box-shadow: 0 24px 70px rgba(20, 43, 71, 0.11);
}

.credit-book-mast {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 210px;
  align-items: end;
  gap: 2.5rem;
  padding: clamp(2.8rem, 6vw, 4.8rem) clamp(1.7rem, 5vw, 4.6rem) 1.8rem;
}

.credit-book-eyebrow {
  margin: 0 0 0.75rem;
  color: var(--oneshot-gold-shadow);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.credit-book-mast h2 {
  max-width: 790px;
  margin: 0;
  color: var(--oneshot-navy);
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5.5vw, 5rem);
  font-weight: 500;
  line-height: 0.94;
  letter-spacing: -0.04em;
}

.credit-book-descriptor {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--fg-dim);
  border-left: 1px solid rgba(29, 47, 78, 0.18);
  font-family: var(--font-mono);
  font-size: 0.69rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.credit-book-metrics {
  display: grid;
  grid-template-columns: 1fr 1fr;
  border-top: 1px solid rgba(29, 47, 78, 0.18);
  border-bottom: 3px solid var(--oneshot-navy);
}

.credit-book-metric {
  padding: 1.45rem clamp(1.7rem, 5vw, 4.6rem) 1.65rem;
}

.credit-book-metric + .credit-book-metric {
  border-left: 1px solid rgba(29, 47, 78, 0.18);
}

.credit-book-metric small {
  display: block;
  min-height: 3.1em;
  margin-bottom: 0.25rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 500;
  line-height: 1.55;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.credit-book-metric strong {
  display: block;
  color: var(--oneshot-navy);
  font-family: var(--font-display);
  font-size: clamp(2.7rem, 5.2vw, 4.6rem);
  font-weight: 500;
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.credit-book-register {
  padding: 1.8rem clamp(1.7rem, 5vw, 4.6rem) 2.4rem;
}

.credit-book-register-intro {
  display: flex;
  justify-content: space-between;
  gap: 1.25rem;
  margin-bottom: 0.65rem;
  color: var(--fg-dim);
  font-family: var(--font-mono);
  font-size: 0.61rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.credit-book-section {
  margin-bottom: 0.55rem;
}

.credit-book-button {
  position: relative;
  display: grid;
  grid-template-columns: 50px 245px minmax(0, 1fr) 36px;
  align-items: center;
  width: 100%;
  min-height: 68px;
  padding: 0;
  color: var(--oneshot-cream);
  border: 0;
  background: var(--oneshot-navy);
  text-align: left;
  cursor: pointer;
}

.credit-book-button::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 3px;
  background: var(--oneshot-president-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms var(--oneshot-ease);
}

.credit-book-button:hover,
.credit-book-button:focus-visible {
  background: #173250;
}

.credit-book-button:focus-visible {
  outline: 2px solid var(--oneshot-president-gold);
  outline-offset: 3px;
}

.credit-book-button[aria-expanded="true"]::after {
  transform: scaleX(1);
}

.credit-book-number {
  padding-left: 1.2rem;
  color: var(--oneshot-president-gold);
  font-family: var(--font-mono);
  font-size: 0.63rem;
  font-weight: 500;
}

.credit-book-button h3 {
  margin: 0;
  color: inherit;
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 500;
  line-height: 1.08;
}

.credit-book-summary {
  padding: 0 1.1rem;
  color: rgba(255, 253, 248, 0.74);
  font-size: 0.78rem;
  line-height: 1.35;
}

.credit-book-toggle {
  color: var(--oneshot-president-gold);
  font-family: var(--font-mono);
  font-size: 1.3rem;
  transition: transform 300ms var(--oneshot-ease);
}

.credit-book-button[aria-expanded="true"] .credit-book-toggle {
  transform: rotate(45deg);
}

.credit-book-panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows 300ms var(--oneshot-ease);
}

.credit-book-section.is-open .credit-book-panel {
  grid-template-rows: 1fr;
}

.credit-book-panel-clip {
  overflow: hidden;
}

.credit-book-panel-inner {
  padding: 1.25rem 1.5rem 1.4rem;
  border: 1px solid rgba(29, 47, 78, 0.18);
  border-top: 0;
  background: var(--oneshot-cream);
}

.credit-book-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  margin: 0;
  padding: 0;
  list-style: none;
}

.credit-book-list li {
  padding: 0.3rem 0;
  font-size: 0.82rem;
  line-height: 1.3;
  white-space: nowrap;
}

.credit-book-list li:not(:last-child)::after {
  content: "·";
  padding: 0 0.55rem;
  color: var(--oneshot-gold-shadow);
}

.credit-book-detail-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 1.9rem;
}

.credit-book-detail {
  padding: 0.75rem 0;
  border-bottom: 1px solid rgba(29, 47, 78, 0.18);
}

.credit-book-detail h4 {
  margin: 0 0 0.45rem;
  color: var(--oneshot-navy);
  font-family: var(--font-display);
  font-size: 1.08rem;
  font-weight: 500;
  line-height: 1.15;
}

.credit-book-detail .credit-book-list li {
  padding: 0.12rem 0;
  font-size: 0.76rem;
}

.credit-book-foot {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-top: 1.35rem;
  padding-top: 1rem;
  color: var(--fg-dim);
  border-top: 1px solid rgba(29, 47, 78, 0.18);
  font-family: var(--font-mono);
  font-size: 0.6rem;
  font-weight: 500;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.credit-book-foot::before {
  content: "";
  width: 44px;
  height: 2px;
  flex: 0 0 auto;
  background: var(--oneshot-president-gold);
}

.credit-book-shell.is-preparing .credit-book-section {
  opacity: 0;
  transform: translateY(10px);
}

.credit-book-shell.is-visible .credit-book-section {
  opacity: 1;
  transform: none;
  transition: opacity 480ms ease, transform 480ms var(--oneshot-ease);
}

.credit-book-shell.is-visible .credit-book-section:nth-of-type(2) { transition-delay: 70ms; }
.credit-book-shell.is-visible .credit-book-section:nth-of-type(3) { transition-delay: 140ms; }
.credit-book-shell.is-visible .credit-book-section:nth-of-type(4) { transition-delay: 210ms; }
.credit-book-shell.is-visible .credit-book-section:nth-of-type(5) { transition-delay: 280ms; }

@media (max-width: 760px) {
  .credit-book-mast {
    grid-template-columns: 1fr;
    gap: 1.35rem;
  }

  .credit-book-descriptor {
    max-width: 46ch;
  }

  .credit-book-button {
    grid-template-columns: 42px minmax(0, 1fr) 34px;
    min-height: 72px;
  }

  .credit-book-summary {
    display: none;
  }

  .credit-book-detail-grid {
    grid-template-columns: 1fr;
  }

  .credit-book-detail:last-child {
    border-bottom: 0;
  }
}

@media (max-width: 480px) {
  .career-credit-book {
    padding: 3rem 0;
  }

  .credit-book-metrics {
    grid-template-columns: 1fr;
  }

  .credit-book-metric + .credit-book-metric {
    border-top: 1px solid rgba(29, 47, 78, 0.18);
    border-left: 0;
  }

  .credit-book-metric small {
    min-height: 0;
  }

  .credit-book-register-intro span:last-child {
    display: none;
  }

  .credit-book-button h3 {
    font-size: 1.08rem;
  }

  .credit-book-panel-inner {
    padding-right: 1rem;
    padding-left: 1rem;
  }

  .credit-book-list li {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .credit-book-button::after,
  .credit-book-toggle,
  .credit-book-panel,
  .credit-book-shell.is-visible .credit-book-section {
    transition: none;
  }
}