.regulations-page {
  background: var(--color-ink-950);
}

.regulations-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(5rem, 7vw, 7rem) var(--space-8);
}

.regulations-hero::before {
  position: absolute;
  inset: -10rem auto auto 52%;
  width: 30rem;
  height: 30rem;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(36, 50, 47, 0.35) 0%, rgba(11, 14, 18, 0) 68%);
  content: "";
  pointer-events: none;
}

.regulations-hero .container {
  position: relative;
}

.regulations-hero__identity {
  width: 100%;
  max-width: 43.75rem;
}

.regulations-hero__identity > :last-child {
  margin-block-end: 0;
}

.regulations-hero__lead {
  max-width: 42.5rem;
  color: var(--color-text-secondary);
  font-size: var(--font-size-18);
  line-height: var(--line-height-18);
}

.regulations-hero__meta {
  display: flex;
  width: fit-content;
  max-width: 100%;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
  font-size: var(--font-size-14);
  line-height: var(--line-height-14);
}

.regulations-intro {
  padding-block: var(--space-7) var(--space-10);
}

.regulations-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--space-8);
  align-items: start;
}

.regulations-layout > * {
  min-width: 0;
  width: 100%;
}

.regulations-toc {
  min-width: 0;
  width: 100%;
}

.regulations-toc__panel {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-inline-start: 3px solid var(--color-accent-saffron);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-toc__label {
  margin: 0;
  color: var(--color-text-primary);
  font-family: var(--font-heading);
  font-size: var(--font-size-22);
  font-weight: 700;
  line-height: var(--line-height-22);
}

.regulations-toc__nav {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-1);
}

.regulations-toc__nav > a {
  display: flex;
  width: 100%;
  min-height: 2.75rem;
  align-items: center;
  padding: var(--space-2) 0;
  border-inline-start: 2px solid transparent;
  color: var(--color-text-secondary);
  font-size: var(--font-size-14);
  font-weight: 700;
  line-height: var(--line-height-14);
  text-decoration: none;
  transition: border-color var(--transition-fast), color var(--transition-fast), padding-inline-start var(--transition-fast);
}

.regulations-toc__nav > a:hover,
.regulations-toc__nav > a[aria-current="true"] {
  padding-inline-start: var(--space-2);
  border-inline-start-color: var(--color-accent-saffron);
  color: var(--color-accent-saffron-hover);
  text-decoration: underline;
  text-underline-offset: 0.16em;
}

.regulations-document {
  min-width: 0;
  width: 100%;
  max-width: 43.75rem;
}

.regulations-reading {
  width: 100%;
}

.regulations-reading + .regulations-reading {
  margin-block-start: var(--space-10);
  padding-block-start: var(--space-9);
  border-block-start: 1px solid var(--color-line-subtle);
}

.regulations-reading__copy {
  max-width: 43.75rem;
}

.regulations-reading--numbered {
  position: relative;
}

.regulations-section-number {
  margin: 0 0 var(--space-2);
  color: var(--color-accent-saffron);
  font-family: var(--font-heading);
  font-size: var(--font-size-28);
  font-weight: 700;
  line-height: var(--line-height-28);
}

.regulations-reading h2 {
  margin-block-end: var(--space-6);
}

.regulations-unit {
  width: 100%;
  max-width: 43.75rem;
}

.regulations-unit + .regulations-unit,
.regulations-unit + .regulations-note,
.regulations-unit + .regulations-contact-note,
.regulations-unit + .regulations-external-note,
.regulations-unit + .regulations-final-contact {
  margin-block-start: var(--space-7);
  padding-block-start: var(--space-7);
  border-block-start: 1px solid var(--color-line-subtle);
}

.regulations-unit__copy {
  max-width: 43.75rem;
}

.regulations-unit__copy--compact {
  max-width: 42.5rem;
}

.regulations-unit h3,
.regulations-note h3,
.regulations-contact-note h3,
.regulations-external-note h3,
.regulations-final-contact h3 {
  margin-block-end: var(--space-3);
}

.regulations-unit__copy > :last-child,
.regulations-note > :last-child,
.regulations-contact-note > :last-child,
.regulations-external-note > :last-child,
.regulations-final-contact > :last-child,
.regulations-summary > :last-child {
  margin-block-end: 0;
}

.regulations-note {
  width: 100%;
  max-width: 43.75rem;
  margin-block-start: var(--space-7);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-contact-note {
  width: 100%;
  max-width: 37.5rem;
  margin-block-start: var(--space-7);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-inline-start: 3px solid var(--color-accent-saffron);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-external-note {
  width: 100%;
  max-width: 38.75rem;
  margin-block-start: var(--space-6);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-inline-start: 3px solid var(--color-alert-coral);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-external-note h3 {
  color: var(--color-alert-coral);
}

.regulations-summary {
  display: flex;
  width: 100%;
  max-width: 37.5rem;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-3);
  margin-block-start: var(--space-6);
  margin-inline-start: var(--space-5);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-inline-start: 3px solid var(--color-accent-saffron);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-summary h4 {
  margin: 0;
}

.regulations-summary ul {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: var(--space-3);
  margin: 0;
  padding-inline-start: 1.25rem;
}

.regulations-summary li {
  min-width: 0;
}

.regulations-final-contact {
  width: 100%;
  max-width: 37.5rem;
  margin-block-start: var(--space-7);
  padding: var(--space-5);
  border: 1px solid var(--color-line-subtle);
  border-radius: var(--radius-card);
  background: var(--color-surface-800);
}

.regulations-effective-date {
  width: fit-content;
  max-width: 100%;
  margin-block: var(--space-8) 0;
  padding-block-start: var(--space-5);
  border-block-start: 1px solid var(--color-line-subtle);
  color: var(--color-text-secondary);
  font-size: var(--font-size-14);
  font-weight: 700;
  line-height: var(--line-height-14);
}

.regulations-reading--closing {
  padding-block-end: var(--space-9);
}

@media (min-width: 68.75rem) {
  .regulations-layout {
    grid-template-columns: 17.5rem minmax(0, 1fr);
    column-gap: var(--space-8);
    row-gap: 0;
  }

  .regulations-toc {
    position: sticky;
    top: calc(var(--space-9) + var(--space-4));
    grid-column: 1;
    grid-row: 1;
    align-self: start;
  }

  .regulations-document {
    grid-column: 2;
    grid-row: 1;
  }
}

@media (max-width: 67.4375rem) {
  .regulations-document {
    max-width: 43.75rem;
  }

  .regulations-toc__panel {
    max-width: 43.75rem;
  }
}

@media (max-width: 47.9375rem) {
  .regulations-hero {
    padding-block: var(--space-8) var(--space-7);
  }

  .regulations-hero::before {
    inset-inline-start: 36%;
    width: 22rem;
    height: 22rem;
  }

  .regulations-hero__lead {
    font-size: var(--font-size-16);
    line-height: var(--line-height-body);
  }

  .regulations-intro {
    padding-block: var(--space-6) var(--space-8);
  }

  .regulations-layout {
    gap: var(--space-7);
  }

  .regulations-toc__panel,
  .regulations-note,
  .regulations-contact-note,
  .regulations-external-note,
  .regulations-summary,
  .regulations-final-contact {
    padding: var(--space-4);
  }

  .regulations-reading + .regulations-reading {
    margin-block-start: var(--space-8);
    padding-block-start: var(--space-7);
  }

  .regulations-reading h2 {
    margin-block-end: var(--space-5);
    font-size: var(--font-size-28);
    line-height: var(--line-height-28);
  }

  .regulations-section-number {
    font-size: var(--font-size-22);
    line-height: var(--line-height-22);
  }

  .regulations-unit + .regulations-unit,
  .regulations-unit + .regulations-note,
  .regulations-unit + .regulations-contact-note,
  .regulations-unit + .regulations-external-note,
  .regulations-unit + .regulations-final-contact {
    margin-block-start: var(--space-6);
    padding-block-start: var(--space-6);
  }

  .regulations-note,
  .regulations-contact-note,
  .regulations-final-contact {
    margin-block-start: var(--space-6);
  }

  .regulations-summary {
    margin-inline-start: 0;
  }

  .regulations-reading--closing {
    padding-block-end: var(--space-7);
  }
}