.page-faq {
  --faq-toc-width: 280px;
  --faq-rule: 3px solid var(--c-text);
  --faq-rule-thin: 1px solid var(--c-border);
  --faq-index-angle: -6deg;
  --faq-panel-shadow: 8px 8px 0 rgba(26, 26, 26, 0.06);
}

.page-faq .breadcrumb {
  margin: 28px 0 20px;
  padding-bottom: 12px;
  border-bottom: var(--faq-rule-thin);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 13px;
}

.page-faq .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 6px;
  color: var(--c-muted);
}

.page-faq .breadcrumb__link {
  color: var(--c-secondary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page-faq .breadcrumb__link:hover {
  color: var(--c-primary);
}

.page-faq .breadcrumb__current {
  color: var(--c-text);
  font-weight: 600;
}

.page-faq .faq-hero {
  position: relative;
  padding: 28px 0 36px;
  border-bottom: var(--faq-rule);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background: var(--c-border);
}

.page-faq .faq-hero__kicker {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 16px;
}

.page-faq .faq-hero__roadmap {
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--c-secondary);
}

.page-faq .faq-hero__stamp {
  display: inline-block;
  padding: 4px 12px;
  background: var(--c-primary);
  color: #fff;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.08em;
  transform: rotate(var(--faq-index-angle));
  box-shadow: 3px 3px 0 rgba(0, 0, 0, 0.08);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-headline);
  font-size: clamp(28px, 5vw, 44px);
  font-weight: 800;
  line-height: 1.18;
  color: var(--c-text);
}

.page-faq .faq-hero__lead {
  margin: 0 0 12px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-muted);
  max-width: 860px;
}

.page-faq .faq-hero__lead strong {
  color: var(--c-text);
}

.page-faq .faq-hero__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-faq .faq-hero__note a {
  color: var(--c-secondary);
  text-decoration: underline;
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.page-faq .faq-hero__note a:hover {
  color: var(--c-primary);
}

.page-faq .divider {
  margin: 8px 0 0;
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 32px;
  align-items: start;
  padding: 40px 0 20px;
}

.page-faq .faq-toc {
  background: var(--c-surface);
  border: var(--faq-rule-thin);
  box-shadow: var(--faq-panel-shadow);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-toc::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 4px;
  height: 100%;
  background: linear-gradient(180deg, var(--c-primary) 0%, var(--c-secondary) 100%);
}

.page-faq .faq-toc__head {
  padding: 20px 20px 12px;
  border-bottom: var(--faq-rule-thin);
}

.page-faq .faq-toc__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--c-primary);
}

.page-faq .faq-toc__title {
  display: block;
  margin-top: 4px;
  font-family: var(--font-headline);
  font-size: 20px;
  font-weight: 800;
  color: var(--c-text);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 8px 0;
}

.page-faq .faq-toc__list li + li {
  border-top: 1px solid var(--c-bg);
}

.page-faq .faq-toc__list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 20px;
  text-decoration: none;
  color: var(--c-text);
  transition: background 0.2s ease, color 0.2s ease;
  border-left: 2px solid transparent;
}

.page-faq .faq-toc__list a:hover {
  background: var(--c-red-light);
  color: var(--c-primary);
  border-left-color: var(--c-primary);
}

.page-faq .faq-toc__num {
  font-size: 14px;
  font-weight: 700;
  color: var(--c-secondary);
  min-width: 28px;
}

.page-faq .faq-toc__foot {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 12px 20px 16px;
  border-top: var(--faq-rule-thin);
  background: var(--c-bg);
  font-size: 12px;
  color: var(--c-muted);
}

.page-faq .faq-content {
  display: grid;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 140px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--c-text);
  position: relative;
}

.page-faq .faq-section__head::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 80px;
  height: 2px;
  background: var(--c-primary);
}

.page-faq .faq-section__num {
  font-size: 24px;
  font-weight: 700;
  color: var(--c-primary);
}

.page-faq .faq-section__head h2 {
  margin: 0;
  font-family: var(--font-headline);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--c-text);
}

.page-faq .faq-item {
  background: var(--c-surface);
  border: var(--faq-rule-thin);
  border-left: 3px solid var(--c-border);
  margin-bottom: 12px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.03);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.page-faq .faq-item:hover {
  border-left-color: var(--c-secondary);
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-primary);
  box-shadow: var(--shadow);
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-headline);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-text);
  transition: background 0.2s ease, color 0.2s ease;
  user-select: none;
}

.page-faq .faq-item__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item__summary:hover {
  background: var(--c-red-light);
  color: var(--c-primary);
}

.page-faq .faq-item[open] .faq-item__summary {
  background: var(--c-blue-light);
  color: var(--c-text);
  border-bottom: 1px dashed var(--c-border);
}

.page-faq .faq-item__summary::after {
  content: "+";
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  font-family: var(--font-mono);
  font-size: 20px;
  font-weight: 700;
  color: #fff;
  background: var(--c-primary);
  border-radius: 4px;
  transition: background 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-item[open] .faq-item__summary::after {
  content: "−";
  background: var(--c-secondary);
  transform: rotate(180deg);
}

.page-faq .faq-item__body {
  padding: 16px 20px 20px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--c-text);
}

.page-faq .faq-item__body p {
  margin: 0 0 12px;
}

.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__body a {
  color: var(--c-secondary);
  text-underline-offset: 4px;
  transition: color 0.2s ease;
}

.page-faq .faq-item__body a:hover {
  color: var(--c-primary);
}

.page-faq .faq-item__body .callout {
  margin-top: 12px;
}

.page-faq .faq-item__body .btn {
  margin-top: 12px;
}

.page-faq .faq-figure {
  margin: 20px 0 0;
  padding: 12px;
  background: var(--c-surface);
  border: var(--faq-rule-thin);
  box-shadow: var(--faq-panel-shadow);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 4px 4px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

.page-faq .faq-help {
  margin-top: 24px;
  padding: 32px;
  background: linear-gradient(135deg, var(--c-red-light) 0%, var(--c-blue-light) 100%);
  border: var(--faq-rule-thin);
  border-top: 4px solid var(--c-primary);
  position: relative;
  overflow: hidden;
}

.page-faq .faq-help::before {
  content: "";
  position: absolute;
  top: -4px;
  right: 32px;
  width: 80px;
  height: 4px;
  background: var(--c-secondary);
}

.page-faq .faq-help__index {
  position: absolute;
  right: 24px;
  bottom: 16px;
  font-size: 56px;
  font-weight: 700;
  line-height: 1;
  color: rgba(26, 26, 26, 0.08);
  pointer-events: none;
}

.page-faq .faq-help h2 {
  margin: 0 0 8px;
  font-family: var(--font-headline);
  font-size: 24px;
  font-weight: 800;
  color: var(--c-text);
}

.page-faq .faq-help p {
  margin: 0 0 20px;
  max-width: 520px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-muted);
}

@media (min-width: 768px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-toc-width) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 156px;
  }

  .page-faq .faq-help {
    padding: 40px;
  }

  .page-faq .faq-help__index {
    font-size: 80px;
  }
}