.page-faq {
  --faq-soft: rgba(232, 238, 244, 0.76);
  --faq-dim: rgba(232, 238, 244, 0.54);
  --faq-rule: 1px solid var(--line);
  --faq-rule-strong: 1px solid var(--line-strong);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 4vw, 34px) 0 clamp(28px, 5vw, 56px);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: end;
  margin-top: clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero__title {
  font-size: clamp(1.85rem, 6.6vw, 3.5rem);
  line-height: 1.08;
  letter-spacing: -0.02em;
  margin: 14px 0 0;
  max-width: 15ch;
}

.page-faq .faq-hero__lede {
  margin-top: 18px;
  max-width: 56ch;
  color: var(--faq-soft);
}

.page-faq .faq-hero__stats {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: var(--faq-rule);
}

.page-faq .faq-hero__stats li {
  display: grid;
  gap: 2px;
  padding: 14px 16px;
  background: var(--hull);
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.1;
  color: var(--orange-soft);
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-stat__unit {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--faq-dim);
}

.page-faq .faq-stat__text {
  font-size: 0.82rem;
  color: var(--faq-soft);
}

.page-faq .faq-hero__media {
  margin: 0;
  aspect-ratio: 10 / 7;
  overflow: hidden;
  border: var(--faq-rule);
  background: var(--hull);
}

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

/* ---------- 分类骨架 ---------- */
.page-faq .faq-guide {
  padding-bottom: clamp(24px, 5vw, 48px);
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(18px, 3vw, 28px);
}

.page-faq .faq-index {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 0 0 8px;
  scrollbar-width: thin;
}

.page-faq .faq-index::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-index::-webkit-scrollbar-thumb {
  background: var(--line-strong);
}

.page-faq .faq-index__title {
  display: none;
}

.page-faq .faq-chip {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  font: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  line-height: 1.2;
  color: var(--fog);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 0;
  white-space: nowrap;
  cursor: pointer;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background-color 0.18s var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--orange-soft);
  border-color: var(--orange);
}

.page-faq .faq-chip[aria-pressed="true"],
.page-faq .faq-chip.is-active {
  color: var(--orange);
  border-color: var(--orange);
  background: rgba(255, 107, 44, 0.1);
}

.page-faq .faq-chip__count {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 500;
  color: var(--faq-dim);
}

.page-faq .faq-chip[aria-pressed="true"] .faq-chip__count,
.page-faq .faq-chip.is-active .faq-chip__count {
  color: var(--orange-soft);
}

.page-faq .faq-status {
  margin: 0 0 4px;
  padding-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--faq-dim);
  border-bottom: var(--faq-rule);
}

.page-faq .faq-stream {
  min-width: 0;
}

/* ---------- 分类块 ---------- */
.page-faq .faq-block {
  padding-top: clamp(18px, 3vw, 26px);
  margin-top: clamp(24px, 4vw, 40px);
  border-top: var(--faq-rule-strong);
}

.page-faq .faq-block:first-child {
  margin-top: clamp(14px, 2.5vw, 22px);
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  align-items: baseline;
  margin-bottom: 4px;
}

.page-faq .faq-block__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-block__title {
  margin: 0;
  font-size: clamp(1.32rem, 4.4vw, 1.9rem);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-block__note {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  padding-left: 0;
  font-size: 0.84rem;
  line-height: 1.6;
  color: var(--faq-dim);
}

.page-faq .faq-figure {
  margin: 16px 0 20px;
  border: var(--faq-rule);
  background: var(--hull);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.04em;
  color: var(--faq-dim);
  border-top: var(--faq-rule);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .qa-item {
  border-bottom: var(--faq-rule);
}

.page-faq .qa-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 40px 16px 0;
  font-size: clamp(0.95rem, 2.6vw, 1.05rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--fog);
  list-style: none;
  cursor: pointer;
  transition: color 0.18s var(--ease);
}

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

.page-faq .qa-item__q::marker {
  content: "";
}

.page-faq .qa-item__q:hover {
  color: var(--orange-soft);
}

.page-faq .qa-item__q::after {
  content: "";
  position: absolute;
  top: 22px;
  right: 8px;
  width: 13px;
  height: 13px;
  background:
    linear-gradient(var(--orange), var(--orange)) center / 13px 1.5px no-repeat,
    linear-gradient(var(--orange), var(--orange)) center / 1.5px 13px no-repeat;
  transition: transform 0.22s var(--ease);
}

.page-faq .qa-item[open] .qa-item__q {
  color: var(--orange-soft);
}

.page-faq .qa-item[open] .qa-item__q::after {
  transform: rotate(180deg);
  background: linear-gradient(var(--orange), var(--orange)) center / 13px 1.5px no-repeat;
}

.page-faq .qa-item__a {
  padding: 0 0 20px;
  max-width: 66ch;
  font-size: 0.92rem;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .qa-item__a p {
  margin: 0;
}

.page-faq .qa-item__a p + p {
  margin-top: 0.85em;
}

.page-faq .qa-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 10px;
}

.page-faq .qa-steps li {
  position: relative;
  counter-increment: faqstep;
  padding-left: 34px;
  font-size: 0.88rem;
  line-height: 1.7;
}

.page-faq .qa-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  width: 24px;
  height: 24px;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 0.62rem;
  color: var(--cyan);
  border: 1px solid var(--line);
  background: rgba(53, 214, 232, 0.08);
}

.page-faq .qa-steps li + li {
  margin-top: 0;
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  margin-top: 22px;
  padding: clamp(18px, 3.4vw, 28px);
  display: grid;
  gap: 6px;
  justify-items: start;
  border: 1px solid rgba(255, 107, 44, 0.42);
  background:
    linear-gradient(140deg, rgba(255, 107, 44, 0.12), rgba(53, 214, 232, 0.05) 70%),
    var(--hull);
}

.page-faq .faq-contact__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-contact__mail {
  font-size: clamp(1.02rem, 3.6vw, 1.35rem);
  font-weight: 700;
  color: var(--fog);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
  padding-bottom: 2px;
  word-break: break-all;
  transition: color 0.18s var(--ease);
}

.page-faq .faq-contact__mail:hover,
.page-faq .faq-contact__mail:focus-visible {
  color: var(--orange-soft);
}

.page-faq .faq-contact__tel {
  font-family: var(--font-mono);
  font-size: 0.92rem;
  color: var(--cyan);
  text-decoration: none;
  letter-spacing: 0.04em;
}

.page-faq .faq-contact__tel:hover,
.page-faq .faq-contact__tel:focus-visible {
  color: var(--orange-soft);
}

.page-faq .faq-contact__note {
  margin: 4px 0 0;
  max-width: 52ch;
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--faq-soft);
}

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

/* ---------- 页尾 ---------- */
.page-faq .faq-foot {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
  margin-top: clamp(28px, 4vw, 44px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: var(--faq-rule-strong);
}

.page-faq .faq-foot__text {
  margin: 0;
  max-width: 46ch;
  font-size: 0.86rem;
  line-height: 1.7;
  color: var(--faq-dim);
}

.page-faq .faq-foot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq [hidden] {
  display: none !important;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-hero__media {
    aspect-ratio: 7 / 5;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-shell {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: clamp(30px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-shell__rail {
    position: sticky;
    top: calc(var(--capsule-h) + 22px);
  }

  .page-faq .faq-index {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding: 0;
    border-left: var(--faq-rule);
  }

  .page-faq .faq-index__title {
    display: block;
    margin: 0;
    padding: 0 0 12px 16px;
    font-family: var(--font-mono);
    font-size: 0.66rem;
    letter-spacing: 0.18em;
    color: var(--faq-dim);
  }

  .page-faq .faq-chip {
    flex: none;
    width: 100%;
    justify-content: space-between;
    white-space: normal;
    text-align: left;
    padding: 13px 16px;
    font-size: 0.9rem;
    border: 0;
    border-left: 2px solid transparent;
    border-bottom: var(--faq-rule);
    background: transparent;
  }

  .page-faq .faq-chip:hover,
  .page-faq .faq-chip:focus-visible {
    border-left-color: var(--line-strong);
    background: rgba(232, 238, 244, 0.04);
  }

  .page-faq .faq-chip[aria-pressed="true"],
  .page-faq .faq-chip.is-active {
    border-left-color: var(--orange);
    background: linear-gradient(90deg, rgba(255, 107, 44, 0.14), rgba(255, 107, 44, 0) 88%);
  }

  .page-faq .qa-item__q {
    padding: 20px 44px 20px 0;
  }

  .page-faq .qa-item__q::after {
    top: 26px;
  }

  .page-faq .qa-item__a {
    padding: 0 0 26px;
    font-size: 0.95rem;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__title {
    max-width: 16ch;
  }

  .page-faq .qa-item__a {
    font-size: 1rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item__q,
  .page-faq .qa-item__q::after,
  .page-faq .faq-chip,
  .page-faq .faq-contact__mail {
    transition: none;
  }

  .page-faq .qa-item[open] .qa-item__q::after {
    transform: none;
  }
}