.page-faq {
  background: var(--c-primary-bg);
  color: var(--c-ink);
  scroll-behavior: smooth;
}

.page-faq .breadcrumb {
  padding-top: 26px;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .06em;
  color: var(--c-mid);
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.page-faq .breadcrumb-slash {
  color: var(--c-accent);
}

.page-faq .breadcrumb a {
  color: var(--c-mid);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--c-accent);
  outline: none;
}

.page-faq .faq-hero {
  position: relative;
  padding: 34px 0 44px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -70px;
  right: -90px;
  width: 440px;
  height: 440px;
  background: radial-gradient(circle at 70% 30%, rgba(74, 93, 107, .15), transparent 68%);
  border-radius: 50%;
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  align-items: center;
  position: relative;
}

.page-faq .faq-hero-copy {
  max-width: 720px;
}

.page-faq .section-tag {
  font-family: var(--font-mono);
  font-size: .8rem;
  letter-spacing: .22em;
  color: var(--c-accent);
  border-left: 3px solid var(--c-accent);
  padding-left: 12px;
  margin-bottom: 18px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(1.7rem, 4vw, 2.9rem);
  line-height: 1.18;
  letter-spacing: .01em;
}

.page-faq .faq-hero-lead {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--c-mid);
  max-width: 62ch;
  margin: 0;
  padding-left: 14px;
  border-left: 2px solid rgba(74, 93, 107, .25);
}

.page-faq .faq-hero-art {
  position: relative;
}

.page-faq .faq-hero-art::before {
  content: "";
  position: absolute;
  inset: 14px -8px -8px 16px;
  border-radius: var(--radius-card);
  background: linear-gradient(135deg, rgba(232, 89, 12, .22), rgba(47, 62, 70, .08));
  z-index: 0;
}

.page-faq .faq-hero-art img {
  position: relative;
  z-index: 1;
  display: block;
  max-width: 100%;
  height: auto;
  width: 400px;
  border-radius: var(--radius-card);
  box-shadow: var(--shadow-float);
  transform: rotate(1.2deg);
}

.page-faq .faq-index {
  background: var(--c-deep);
  color: #E5E9EC;
  padding: 42px 0;
  margin-top: 12px;
}

.page-faq .faq-index-inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  align-items: center;
}

.page-faq .faq-index-copy h2 {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 900;
  color: #F2F4F3;
  margin: 0 0 10px;
}

.page-faq .faq-index-copy > p {
  color: rgba(242, 244, 243, .72);
  font-size: .92rem;
  line-height: 1.75;
  margin: 0 0 22px;
}

.page-faq .faq-index-links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 10px;
}

.page-faq .faq-index-links a {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  color: #E5E9EC;
  text-decoration: none;
  font-size: .9rem;
  line-height: 1.4;
  padding: 11px 12px;
  border: 1px solid rgba(242, 244, 243, .22);
  border-radius: var(--radius-tag);
  transition: border-color .25s var(--ease), background-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .faq-index-links a:hover,
.page-faq .faq-index-links a:focus-visible {
  border-color: var(--c-accent);
  background: rgba(232, 89, 12, .16);
  color: #FFFFFF;
  outline: none;
}

.page-faq .faq-index-links .idx-num {
  font-family: var(--font-mono);
  font-size: .76rem;
  color: var(--c-accent);
  letter-spacing: .04em;
}

.page-faq .faq-index-visual img {
  display: block;
  max-width: 100%;
  height: auto;
  width: 600px;
  border-radius: var(--radius-card);
}

.page-faq .faq-body-shell {
  max-width: var(--shell-width);
  margin: 0 auto;
  padding: 18px 20px 80px;
}

.page-faq .faq-chapter {
  padding: 54px 0 12px;
  scroll-margin-top: 130px;
  border-top: 1px solid rgba(47, 62, 70, .18);
}

.page-faq .faq-chapter + .faq-chapter {
  margin-top: 42px;
}

.page-faq .chapter-title-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  margin-bottom: 26px;
}

.page-faq .chapter-index {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  min-width: 92px;
}

.page-faq .chapter-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 1.8rem;
  line-height: 1.1;
  color: var(--c-accent);
  letter-spacing: .04em;
}

.page-faq .chapter-cn {
  font-family: var(--font-heading);
  font-size: .84rem;
  color: var(--c-mid);
  margin-top: 8px;
  letter-spacing: .28em;
  border-bottom: 2px solid var(--c-accent);
  padding-bottom: 5px;
}

.page-faq .chapter-title-main h2 {
  margin: 0 0 8px;
  font-family: var(--font-heading);
  font-size: clamp(1.3rem, 2.4vw, 1.85rem);
  font-weight: 900;
  color: var(--c-ink);
  line-height: 1.3;
}

.page-faq .chapter-desc {
  margin: 0;
  font-size: .9rem;
  color: var(--c-mid);
  line-height: 1.7;
}

.page-faq .faq-list {
  border-top: 1px solid rgba(47, 62, 70, .16);
}

.page-faq .faq-item {
  border-bottom: 1px solid rgba(47, 62, 70, .16);
  background: var(--c-primary-bg);
  transition: background-color .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-item:hover {
  background: #FFFFFF;
}

.page-faq .faq-item[open] {
  background: var(--c-highlight);
}

.page-faq .faq-question {
  list-style: none;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 18px 12px;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 600;
  color: var(--c-ink);
  line-height: 1.55;
  transition: color .25s var(--ease);
}

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

.page-faq .faq-qnum {
  flex: none;
  width: 3.1rem;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 400;
  color: var(--c-accent);
  letter-spacing: .04em;
  padding-top: 3px;
}

.page-faq .faq-qtext {
  flex: 1;
}

.page-faq .faq-question::after {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-left: auto;
  border-right: 2px solid var(--c-mid);
  border-bottom: 2px solid var(--c-mid);
  transform: translateY(-2px) rotate(45deg);
  margin-top: 9px;
  transition: transform .28s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-item[open] .faq-question::after {
  transform: translateY(5px) rotate(225deg);
  border-color: var(--c-accent);
}

.page-faq .faq-answer {
  padding: 2px 16px 22px 16px;
  max-width: 72ch;
  font-size: .95rem;
  line-height: 1.85;
  color: var(--c-mid);
}

.page-faq .faq-answer p {
  margin: 0 0 10px;
}

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

.page-faq .faq-answer a {
  color: var(--c-accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-chapter--dark {
  background: var(--c-deep);
  border-radius: var(--radius-card);
  padding: 40px 22px 24px;
  border-top: none;
  position: relative;
  box-shadow: var(--shadow-float);
}

.page-faq .faq-chapter--dark .chapter-title-main h2 {
  color: #F2F4F3;
}

.page-faq .faq-chapter--dark .chapter-desc {
  color: rgba(242, 244, 243, .68);
}

.page-faq .faq-chapter--dark .chapter-cn {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}

.page-faq .faq-chapter--dark .faq-list {
  border-top-color: rgba(242, 244, 243, .18);
}

.page-faq .faq-chapter--dark .faq-item {
  background: rgba(242, 244, 243, .08);
  border-bottom-color: rgba(242, 244, 243, .12);
}

.page-faq .faq-chapter--dark .faq-item:hover {
  background: rgba(242, 244, 243, .14);
}

.page-faq .faq-chapter--dark .faq-item[open] {
  background: rgba(255, 240, 230, .94);
}

.page-faq .faq-chapter--dark .faq-question {
  color: #F2F4F3;
}

.page-faq .faq-chapter--dark .faq-item[open] .faq-question {
  color: var(--c-ink);
}

.page-faq .faq-chapter--dark .faq-answer {
  color: rgba(31, 41, 55, .82);
}

.page-faq .faq-chapter--dark .faq-answer a {
  color: var(--c-accent);
}

.page-faq .faq-help {
  margin-top: 58px;
  text-align: center;
  padding: 50px 20px 44px;
  background: var(--c-secondary-bg);
  border: 2px dashed rgba(74, 93, 107, .28);
  border-radius: var(--radius-card);
}

.page-faq .faq-help h2 {
  margin: 0 0 14px;
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 900;
  color: var(--c-ink);
  line-height: 1.3;
}

.page-faq .faq-help p {
  max-width: 56ch;
  margin: 0 auto 28px;
  color: var(--c-mid);
  line-height: 1.85;
  font-size: .96rem;
}

.page-faq .faq-help-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.page-faq .faq-help .btn {
  min-width: 160px;
  text-align: center;
}

@media (min-width: 768px) {
  .page-faq .faq-hero {
    padding: 58px 0 68px;
  }

  .page-faq .faq-hero-inner {
    grid-template-columns: 1.5fr 0.8fr;
    gap: 40px;
  }

  .page-faq .faq-hero-art {
    justify-self: end;
  }

  .page-faq .faq-index-inner {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }

  .page-faq .faq-index-links {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-faq .faq-index-visual {
    justify-self: end;
  }

  .page-faq .faq-body-shell {
    padding-top: 36px;
  }

  .page-faq .faq-chapter {
    padding: 72px 28px 16px;
  }

  .page-faq .chapter-title-grid {
    grid-template-columns: 150px 1fr;
    gap: 24px;
    margin-bottom: 30px;
  }

  .page-faq .chapter-index {
    min-width: 120px;
  }

  .page-faq .chapter-num {
    font-size: 2.1rem;
  }

  .page-faq .faq-question {
    padding: 20px 16px;
    font-size: 1.04rem;
  }

  .page-faq .faq-answer {
    padding: 4px 20px 24px 20px;
    font-size: .96rem;
  }

  .page-faq .faq-chapter--dark {
    padding: 48px 32px 28px;
  }

  .page-faq .faq-help {
    padding: 58px 40px 52px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-index-links {
    grid-template-columns: repeat(5, 1fr);
    gap: 12px;
  }

  .page-faq .faq-chapter {
    padding-left: 48px;
    padding-right: 48px;
  }

  .page-faq .faq-chapter--dark {
    padding-left: 52px;
    padding-right: 52px;
  }
}