.page-faq {
  --faq-idx-w: 236px;
  --faq-arrow: rgba(255, 106, 26, .32);
  --faq-arrow-on: rgba(255, 106, 26, .85);
  background: var(--ink);
  color: var(--text);
  overflow-x: hidden;
}

.page-faq .faq-shell {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.page-faq .faq-crumb {
  padding-top: clamp(18px, 2.6vw, 30px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(22px, 4vw, 44px) clamp(34px, 6vw, 68px);
  border-bottom: 1px solid var(--line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: -1px;
  width: min(38%, 420px);
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--orange));
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(22px, 4vw, 40px);
}

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

.page-faq .faq-hero__copy .lede {
  color: var(--muted);
  font-size: 17px;
  line-height: 1.78;
  max-width: 60ch;
  margin: 0;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(29px, 5.4vw, 58px);
  line-height: 1.08;
  letter-spacing: -.02em;
  margin: 14px 0 18px;
  max-width: 22ch;
  text-wrap: balance;
}

.page-faq .faq-hero__aside {
  border: 1px solid var(--line);
  border-left: 2px solid var(--orange);
  background: linear-gradient(150deg, var(--panel-2), var(--panel));
  padding: 18px 20px;
  display: grid;
  gap: 10px;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-hero__aside-title {
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--orange);
  margin: 0;
}

.page-faq .faq-hero__aside-text {
  margin: 0;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .faq-hero__mail {
  display: inline-block;
  font-size: 13.5px;
  letter-spacing: .04em;
  color: var(--text);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
  padding-bottom: 3px;
  transition: color .22s var(--ease), border-color .22s var(--ease);
  overflow-wrap: anywhere;
}

.page-faq .faq-hero__mail:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 索引 + 正文 ---------- */

.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 5vw, 52px);
  padding-block: clamp(32px, 5.5vw, 68px) clamp(48px, 8vw, 96px);
}

.page-faq .faq-index {
  border-left: 1px solid var(--line);
  padding-left: 14px;
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--faint);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  margin-left: -14px;
  color: var(--muted);
  font-size: 14.5px;
  line-height: 1.5;
  text-decoration: none;
  transition: color .22s var(--ease), border-left-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--text);
  border-left-color: var(--orange);
  background: var(--panel);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  color: var(--faint);
  transition: color .22s var(--ease);
}

.page-faq .faq-index__link:hover .faq-index__num {
  color: var(--orange);
}

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

/* ---------- 分区 ---------- */

.page-faq .faq-block {
  border-top: 1px solid var(--line);
  padding-top: clamp(20px, 3vw, 34px);
  padding-bottom: clamp(34px, 5vw, 60px);
  scroll-margin-top: calc(var(--topbar-h) + var(--status-h) + 26px);
}

.page-faq .faq-block:last-child {
  padding-bottom: 0;
}

.page-faq .faq-block__head {
  display: grid;
  gap: 6px 24px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-block__num {
  font-size: clamp(36px, 6.4vw, 66px);
  line-height: 1;
  font-weight: 700;
  letter-spacing: -.02em;
  color: var(--faq-arrow);
  opacity: .5;
  transition: color .45s var(--ease), opacity .45s var(--ease);
}

.page-faq .faq-block.is-visible .faq-block__num {
  color: var(--faq-arrow-on);
  opacity: 1;
}

.page-faq .faq-block__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(21px, 3vw, 32px);
  line-height: 1.24;
  letter-spacing: -.01em;
  margin: 0;
}

.page-faq .faq-block__lede {
  grid-column: 1 / -1;
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
  max-width: 62ch;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background-color .26s var(--ease), border-bottom-color .26s var(--ease);
}

.page-faq .faq-item:first-of-type {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item[open] {
  background: linear-gradient(90deg, rgba(255, 106, 26, .055), transparent 62%);
  border-bottom-color: rgba(255, 106, 26, .42);
}

.page-faq .faq-item__q {
  position: relative;
  list-style: none;
  cursor: pointer;
  padding: 17px 40px 17px 20px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15.5px, 1.5vw, 17px);
  line-height: 1.58;
  color: var(--text);
  transition: color .22s var(--ease);
}

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

.page-faq .faq-item__q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 2px;
  background: var(--line);
  transition: background-color .26s var(--ease);
}

.page-faq .faq-item__q::after {
  content: "";
  position: absolute;
  right: 12px;
  top: calc(50% - 7px);
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--faint);
  border-bottom: 1.5px solid var(--faint);
  transform: rotate(45deg);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

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

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

.page-faq .faq-item[open] .faq-item__q::before {
  background: var(--orange);
}

.page-faq .faq-item[open] .faq-item__q::after {
  border-color: var(--orange);
  transform: rotate(-135deg);
}

.page-faq .faq-item__a {
  padding: 0 40px 22px 20px;
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.85;
  max-width: 66ch;
}

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

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

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

.page-faq .faq-item__a a:hover {
  color: var(--orange);
  border-bottom-color: var(--orange);
}

/* ---------- 操作路径 ---------- */

.page-faq .faq-steps {
  list-style: none;
  counter-reset: faqstep;
  margin: 2px 0 14px;
  padding: 0;
  display: grid;
  gap: 9px;
}

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

.page-faq .faq-steps__item {
  counter-increment: faqstep;
  position: relative;
  padding-left: 38px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--muted);
  transition: color .2s var(--ease);
}

.page-faq .faq-steps__item::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--blue);
}

.page-faq .faq-steps__item::after {
  content: "→";
  position: absolute;
  left: 22px;
  top: 0;
  font-size: 12px;
  color: var(--faint);
}

.page-faq .faq-steps__item:hover {
  color: var(--text);
}

/* ---------- 配图 ---------- */

.page-faq .faq-figure {
  margin: 0 0 clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  line-height: 1.6;
  color: var(--faint);
  padding: 10px 14px;
  border-top: 1px solid var(--line);
}

/* ---------- 联系信息 ---------- */

.page-faq .faq-contact {
  border: 1px solid var(--line);
  background: var(--panel);
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  display: grid;
}

.page-faq .faq-contact__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
  padding: 13px 16px;
  border-bottom: 1px solid var(--line);
  transition: background-color .22s var(--ease);
}

.page-faq .faq-contact__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-contact__row:hover {
  background: var(--panel-2);
}

.page-faq .faq-contact__row dt {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--faint);
}

.page-faq .faq-contact__row dd {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .faq-contact__row dd a {
  color: var(--orange);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 106, 26, .35);
  transition: color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-contact__row dd a:hover {
  color: var(--orange-soft);
  border-bottom-color: var(--orange-soft);
}

/* ---------- 响应式 ---------- */

@media (min-width: 560px) and (max-width: 1023px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 18px;
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 120px minmax(0, 1fr);
    gap: 14px;
    align-items: baseline;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-block__head {
    grid-template-columns: auto minmax(0, 1fr);
    align-items: baseline;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) minmax(250px, 316px);
    align-items: end;
    gap: clamp(32px, 5vw, 72px);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    align-items: start;
    gap: clamp(34px, 4.4vw, 64px);
  }

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

  .page-faq .faq-contact__row {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 16px;
    align-items: baseline;
    padding: 14px 20px;
  }
}

@media (min-width: 1280px) {
  .page-faq {
    --faq-idx-w: 264px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-block__num,
  .page-faq .faq-item__q::after,
  .page-faq .faq-item__q::before,
  .page-faq .faq-steps__item,
  .page-faq .faq-index__link,
  .page-faq .faq-hero__mail,
  .page-faq .faq-contact__row {
    transition: none;
  }

  .page-faq .faq-block__num {
    opacity: 1;
  }
}