.page-faq {
  --faq-rule: rgba(107, 74, 50, .42);
  --faq-rule-soft: rgba(107, 74, 50, .24);
  --faq-pad: clamp(16px, 3.4vw, 32px);
  color: var(--cream);
}

.page-faq [id] {
  scroll-margin-top: clamp(96px, 15vh, 156px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.6vw, 26px);
  font-size: .75rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .breadcrumb li {
  display: flex;
  align-items: center;
  gap: 6px;
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  color: var(--clay);
}

.page-faq .breadcrumb a {
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--neon);
  border-bottom-color: var(--neon);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(20px, 4vw, 44px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(28px, 5vw, 56px);
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  font-size: clamp(2.2rem, 7.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.02em;
}

.page-faq .faq-hero__title span {
  display: block;
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 40ch;
  font-size: 1.0625rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-hero__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--faq-rule-soft);
  border: 1px solid var(--faq-rule-soft);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-fact {
  background: var(--carbon);
  padding: clamp(14px, 2.4vw, 22px);
}

.page-faq .faq-fact__value {
  display: flex;
  align-items: baseline;
  gap: 4px;
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(1.4rem, 3.6vw, 2rem);
  line-height: 1.1;
  color: var(--neon);
}

.page-faq .faq-fact__value .num-unit {
  font-size: .5em;
  color: var(--gray);
}

.page-faq .faq-fact__label {
  margin: 8px 0 0;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-quick {
  padding-top: clamp(36px, 6vw, 72px);
}

.page-faq .faq-quick__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-quick__title {
  margin: 0;
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  letter-spacing: .02em;
  color: var(--cream);
}

.page-faq .faq-quick__note {
  margin: 0;
  font-size: .8125rem;
  color: var(--gray);
}

.page-faq .faq-quick__list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--faq-rule-soft);
  border: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-quick__list li {
  background: var(--carbon);
  display: flex;
}

.page-faq .faq-quick__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  width: 100%;
  padding: clamp(14px, 2vw, 20px);
  color: var(--cream);
  text-decoration: none;
  font-size: .9375rem;
  line-height: 1.55;
  transition: background .22s ease, color .22s ease;
}

.page-faq .faq-quick__list a:hover,
.page-faq .faq-quick__list a:focus-visible {
  background: var(--veil);
  color: var(--neon);
}

.page-faq .faq-quick__no {
  flex: 0 0 auto;
  font-size: .75rem;
  letter-spacing: .06em;
  color: var(--orange);
}

/* ---------- 分组问答 ---------- */
.page-faq .faq-groups {
  padding-top: clamp(44px, 7vw, 88px);
}

.page-faq .faq-group {
  padding-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--faq-rule);
  position: relative;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 7vw, 88px);
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: clamp(56px, 12vw, 140px);
  height: 3px;
  background: var(--orange);
  transform: skewX(-30deg);
  transform-origin: left center;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 4px 14px;
  align-items: baseline;
  margin-bottom: clamp(14px, 2.4vw, 24px);
}

.page-faq .faq-group__no {
  font-size: clamp(.9rem, 1.6vw, 1.125rem);
  letter-spacing: .06em;
  color: var(--blue);
  transform: skewX(-8deg);
  display: inline-block;
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(1.7rem, 4.6vw, 2.7rem);
  line-height: 1.08;
}

.page-faq .faq-group__note {
  grid-column: 2;
  margin: 0;
  max-width: 46ch;
  font-size: .875rem;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-group__items {
  border-top: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: clamp(14px, 2vw, 20px) 0;
  cursor: pointer;
  list-style: none;
  font-size: 1.0625rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--cream);
  transition: color .2s ease;
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--neon);
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin-top: 3px;
  border: 1px solid var(--faq-rule);
  border-radius: 50%;
  transition: border-color .22s ease, background .22s ease;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 4px;
  right: 4px;
  height: 1.5px;
  background: var(--gray);
  transform: translateY(-50%);
  transition: background .22s ease, opacity .22s ease, transform .22s ease;
}

.page-faq .faq-item__sign::after {
  transform: translateY(-50%) rotate(90deg);
  transform-origin: center;
}

.page-faq details[open] > .faq-item__q {
  color: var(--cream);
}

.page-faq details[open] > .faq-item__q .faq-item__sign {
  border-color: var(--neon);
  background: rgba(182, 255, 60, .12);
}

.page-faq details[open] > .faq-item__q .faq-item__sign::before,
.page-faq details[open] > .faq-item__q .faq-item__sign::after {
  background: var(--neon);
}

.page-faq details[open] > .faq-item__q .faq-item__sign::after {
  transform: translateY(-50%) rotate(90deg) scaleX(.001);
  opacity: 0;
}

.page-faq .faq-item:target > .faq-item__q {
  color: var(--neon);
}

.page-faq .faq-item:target {
  box-shadow: inset 3px 0 0 var(--orange);
}

.page-faq .faq-item__a {
  padding: 0 0 clamp(16px, 2.4vw, 24px);
  max-width: 68ch;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-figure {
  margin: clamp(22px, 3.4vw, 36px) 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-figure .figure__caption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--gray);
}

/* ---------- 口径与边界 ---------- */
.page-faq .faq-scope {
  padding-top: clamp(48px, 8vw, 96px);
}

.page-faq .faq-scope__plate {
  padding: clamp(22px, 4vw, 46px);
  color: var(--ink);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), calc(100% - 26px) 100%, 0 100%);
}

.page-faq .faq-scope__plate .eyebrow {
  color: var(--clay);
  margin: 0 0 10px;
}

.page-faq .faq-scope__title {
  margin: 0 0 14px;
  font-size: clamp(1.4rem, 3.2vw, 2rem);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-scope__text {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.78;
  color: rgba(11, 13, 12, .82);
}

.page-faq .faq-scope__list {
  margin: 18px 0 22px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
  max-width: 62ch;
}

.page-faq .faq-scope__list li {
  position: relative;
  padding-left: 18px;
  font-size: .9375rem;
  line-height: 1.7;
  color: rgba(11, 13, 12, .78);
}

.page-faq .faq-scope__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 8px;
  height: 2px;
  background: var(--orange);
  transform: skewX(-30deg);
}

.page-faq .faq-scope__plate .btn--ghost {
  border-color: var(--clay);
  color: var(--clay);
}

.page-faq .faq-scope__plate .btn--ghost:hover,
.page-faq .faq-scope__plate .btn--ghost:focus-visible {
  border-color: var(--orange);
  color: var(--orange);
}

/* ---------- 纠错通道 ---------- */
.page-faq .faq-fix {
  padding-top: clamp(48px, 8vw, 96px);
}

.page-faq .faq-fix__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  align-items: start;
}

.page-faq .faq-fix__media .figure {
  margin: 0;
}

.page-faq .faq-fix__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-fix__media .figure__caption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.65;
  color: var(--gray);
}

.page-faq .faq-fix__body .eyebrow {
  margin: 0 0 10px;
}

.page-faq .faq-fix__title {
  margin: 0 0 14px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.12;
}

.page-faq .faq-fix__lede {
  margin: 0 0 20px;
  max-width: 46ch;
  font-size: 1rem;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-fix__contacts {
  display: grid;
  gap: 1px;
  margin: 0 0 18px;
  padding: 1px;
  list-style: none;
  background: var(--faq-rule-soft);
  border: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-fix__contacts .contact-item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 12px 14px;
  background: var(--carbon);
}

.page-faq .faq-fix__contacts .contact-key {
  flex: 0 0 5.6em;
  font-size: .75rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--gray);
  padding-top: 3px;
}

.page-faq .faq-fix__contacts .contact-value {
  flex: 1 1 12ch;
  min-width: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .9375rem;
  line-height: 1.6;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-fix__boundary {
  margin: 0 0 22px;
  max-width: 52ch;
  font-size: .875rem;
  line-height: 1.75;
  color: var(--gray);
  border-left: 2px solid var(--clay);
  padding-left: 14px;
}

/* ---------- 术语词典 ---------- */
.page-faq .faq-lex {
  padding-top: clamp(48px, 8vw, 96px);
}

.page-faq .faq-lex__head {
  max-width: 56ch;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-lex__head .eyebrow {
  margin: 0 0 10px;
}

.page-faq .faq-lex__title {
  margin: 0 0 12px;
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  line-height: 1.14;
}

.page-faq .faq-lex__note {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-lex__list {
  display: grid;
  gap: 0;
  margin: 0;
  border-top: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-lex__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px 22px;
  padding: clamp(12px, 1.8vw, 18px) 0;
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-lex__row dt {
  font-size: .875rem;
  letter-spacing: .04em;
  color: var(--blue);
}

.page-faq .faq-lex__row dd {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--ink-soft);
}

/* ---------- 延伸入口 ---------- */
.page-faq .faq-more {
  padding-top: clamp(44px, 7vw, 84px);
  padding-bottom: clamp(44px, 7vw, 84px);
}

.page-faq .faq-more__inner {
  border-top: 1px solid var(--faq-rule);
  padding-top: clamp(22px, 3.4vw, 36px);
  display: grid;
  gap: 14px;
}

.page-faq .faq-more__title {
  margin: 0;
  font-size: clamp(1.3rem, 3vw, 1.8rem);
  line-height: 1.2;
}

.page-faq .faq-more__text {
  margin: 0;
  max-width: 56ch;
  font-size: .9375rem;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-faq .faq-more__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 14px;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-lex__row {
    grid-template-columns: minmax(0, 3fr) minmax(0, 7fr);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-fix__grid {
    grid-template-columns: minmax(0, 4fr) minmax(0, 7fr);
  }

  .page-faq .faq-group__head {
    grid-template-columns: 4rem minmax(0, 1fr);
  }

  .page-faq .faq-group__no {
    text-align: right;
  }

  .page-faq .faq-group__note {
    grid-column: 2;
  }

  .page-faq .faq-item__a {
    padding-right: 8%;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-group__head {
    grid-template-columns: 4.6rem minmax(0, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__sign,
  .page-faq .faq-item__sign::before,
  .page-faq .faq-item__sign::after,
  .page-faq .faq-quick__list a,
  .page-faq .faq-item__q,
  .page-faq .breadcrumb a {
    transition: none;
  }
}
</main>