.page-faq {
  --faq-index-w: 19rem;
  --faq-cut: 1.25rem;
  min-height: 100vh;
  overflow-x: hidden;
}

.page-faq .c-container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding: 1.5rem 1.25rem 4rem;
}

.page-faq .c-breadcrumb {
  margin-bottom: 1.5rem;
}

.page-faq__intro {
  padding: 2rem 0 2.25rem;
  border-bottom: 1px solid var(--c-line);
  margin-bottom: 2.5rem;
}

.page-faq__intro .c-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  margin-bottom: 0.875rem;
}

.page-faq__intro .c-kicker::before {
  content: "";
  display: inline-block;
  width: 1.75rem;
  height: 0.1875rem;
  background: var(--c-red);
}

.page-faq__intro h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.75rem, 4.5vw, 2.75rem);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--c-text);
  margin: 0 0 0.875rem;
}

.page-faq__lead {
  max-width: 38rem;
  margin: 0;
  color: var(--c-gray);
  font-size: 1rem;
  line-height: 1.7;
  font-family: var(--font-body);
}

.page-faq__lead a {
  color: var(--c-red-bright);
  text-decoration: underline;
  text-underline-offset: 0.25rem;
  text-decoration-thickness: 1px;
}

.page-faq__layout {
  display: grid;
  gap: 1.5rem;
}

.page-faq__index {
  position: relative;
  background:
    linear-gradient(to bottom, var(--c-red), var(--c-red-bright)) left top / 4px 100% no-repeat,
    var(--c-panel);
  background-color: var(--c-panel);
  background-image:
    linear-gradient(to bottom, var(--c-red), var(--c-red-bright));
  background-repeat: no-repeat;
  background-position: left top;
  background-size: 4px 100%;
  padding: 1.5rem 1.25rem 1.25rem 1.5rem;
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
  border: 1px solid var(--c-line);
}

.page-faq__index-title {
  margin: 0 0 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-gray);
}

.page-faq__index-block {
  margin-bottom: 1.25rem;
}

.page-faq__index-block:last-of-type {
  margin-bottom: 0;
}

.page-faq__index-cat {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  margin: 0 0 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--c-red-bright);
}

.page-faq__index-catnum {
  font-family: var(--font-mono);
  color: var(--c-red);
}

.page-faq__index-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.page-faq__index-link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.4375rem 0.5rem 0.4375rem 0.75rem;
  border-left: 3px solid var(--c-line);
  color: var(--c-silver);
  text-decoration: none;
  font-size: 0.875rem;
  line-height: 1.5;
  transition: background-color 0.2s var(--ease-out), color 0.2s var(--ease-out), border-color 0.2s var(--ease-out);
}

.page-faq__index-link:hover,
.page-faq__index-link:focus-visible {
  background: var(--c-float);
  color: var(--c-text);
  border-left-color: var(--c-red);
  outline: 2px solid transparent;
  outline-offset: 2px;
}

.page-faq__index-num {
  flex: 0 0 auto;
  min-width: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-gray);
}

.page-faq__index-label {
  display: block;
  min-width: 0;
}

.page-faq__index-note {
  margin: 1.5rem 0 0;
  padding-top: 0.875rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--c-gray);
}

.page-faq__content {
  min-width: 0;
}

.page-faq__group {
  margin-bottom: 3rem;
}

.page-faq__group:last-child {
  margin-bottom: 0;
}

.page-faq__group-title {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  margin: 0 0 1.25rem;
  padding: 0 0 0.625rem;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.625rem;
  line-height: 1.25;
  color: var(--c-text);
}

.page-faq__group-num {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-red);
}

.page-faq .c-faq {
  display: grid;
  gap: 0.75rem;
}

.page-faq .c-faq__item {
  position: relative;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  border-left: 3px solid var(--c-line);
  transition: border-color 0.25s var(--ease-out), background-color 0.25s var(--ease-out);
}

.page-faq .c-faq__item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 0;
  height: 0;
  border-top: 1rem solid var(--c-red);
  border-left: 1rem solid transparent;
  opacity: 0;
  transition: opacity 0.2s var(--ease-out);
}

.page-faq .c-faq__item:target,
.page-faq .c-faq__item[data-open] {
  border-left-color: var(--c-red);
  background: var(--c-float);
}

.page-faq .c-faq__item:target::after,
.page-faq .c-faq__item[data-open]::after {
  opacity: 1;
}

.page-faq .c-faq__question {
  margin: 0;
}

.page-faq .c-faq__toggle {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  width: 100%;
  min-height: 3.25rem;
  padding: 1.25rem 1.5rem;
  background: transparent;
  border: 0;
  color: var(--c-text);
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.5;
  text-align: left;
  cursor: pointer;
}

.page-faq .c-faq__toggle::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 1.5rem;
  line-height: 1;
  color: var(--c-red);
  transition: transform 0.25s var(--ease-out);
}

.page-faq .c-faq__item[data-open] .c-faq__toggle::after {
  transform: rotate(45deg);
}

.page-faq .c-faq__toggle:focus-visible {
  outline: 2px solid var(--c-red-bright);
  outline-offset: -2px;
}

.page-faq .c-faq__answer {
  display: grid;
  gap: 0.625rem;
  padding: 0 1.5rem 1.5rem;
  margin: 0;
  color: var(--c-silver);
  font-size: 0.9375rem;
  line-height: 1.75;
}

.page-faq .c-faq__answer p {
  margin: 0;
  max-width: 46rem;
}

.page-faq .c-faq__answer a {
  color: var(--c-red-bright);
  text-decoration: underline;
  text-underline-offset: 0.2rem;
  text-decoration-thickness: 1px;
}

.page-faq__sync {
  margin-top: 2rem;
  padding: 1.25rem;
  background: var(--c-float);
  border: 1px solid var(--c-line);
}

.page-faq__sync-art {
  display: block;
  width: 100%;
  max-width: 28rem;
  height: auto;
  margin-inline: auto;
}

.page-faq__sync-path {
  animation: pageFaqDash 14s linear infinite;
}

.page-faq__sync-caption {
  margin: 0.875rem 0 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-gray);
}

.page-faq__figure {
  margin: 2rem 0 0;
  padding: 0;
  background: var(--c-panel);
  border: 1px solid var(--c-line);
  clip-path: polygon(0 0, calc(100% - var(--faq-cut)) 0, 100% var(--faq-cut), 100% 100%, 0 100%);
}

.page-faq__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq__figure figcaption {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--c-line);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--c-gray);
}

@keyframes pageFaqDash {
  to {
    stroke-dashoffset: -112;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq__sync-path {
    animation: none;
  }

  .page-faq__intro .c-kicker::before {
    transition: none;
  }
}

@media (min-width: 64rem) {
  .page-faq .c-container {
    padding: 2.5rem 2rem 5rem;
  }

  .page-faq__intro {
    padding: 3rem 0 3rem;
    margin-bottom: 3rem;
  }

  .page-faq__intro h1 {
    font-size: clamp(2.25rem, 4.5vw, 3rem);
  }

  .page-faq__layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 2.5rem;
    align-items: start;
  }

  .page-faq__index {
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    overscroll-behavior: contain;
  }

  .page-faq__index-link {
    font-size: 0.9375rem;
  }

  .page-faq__group {
    margin-bottom: 4rem;
  }

  .page-faq__group-title {
    font-size: 1.875rem;
  }

  .page-faq .c-faq__answer {
    font-size: 1rem;
  }

  .page-faq__figure {
    margin-top: 2.5rem;
  }
}