.page-faq {
  --faq-index-w: 210px;
  --faq-rule: rgba(91, 107, 132, .28);
}

/* ── 首屏 ───────────────────────────────── */
.page-faq .faq-hero {
  background:
    radial-gradient(circle at 78% 14%, rgba(255, 90, 31, .18), transparent 48%),
    linear-gradient(158deg, var(--panel-a) 0%, var(--panel-b) 100%);
  color: var(--paper);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
  padding: 40px 0 48px;
}

.page-faq .faq-hero .kicker {
  margin: 0 0 18px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--orange);
}

.page-faq .faq-hero h1 {
  margin: 0 0 20px;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(38px, 9vw, 76px);
  line-height: 1.04;
  letter-spacing: -.012em;
}

.page-faq .faq-hero__hl {
  display: block;
  color: var(--orange);
}

.page-faq .faq-hero__lede {
  margin: 0 0 26px;
  max-width: 52ch;
  font-size: 16.5px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .82);
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 0;
}

.page-faq .faq-hero__cta .btn--ghost {
  color: var(--paper);
  border-color: rgba(217, 226, 240, .34);
}

.page-faq .faq-hero__cta .btn--ghost:hover {
  border-color: var(--orange);
  color: var(--orange);
}

/* 首屏数据面板 */
.page-faq .faq-stats {
  border: 1px solid rgba(217, 226, 240, .2);
  background: rgba(7, 9, 13, .38);
  border-radius: var(--r-soft);
  overflow: hidden;
}

.page-faq .faq-stats__title {
  margin: 0;
  padding: 12px 18px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
  border-bottom: 1px solid rgba(217, 226, 240, .16);
}

.page-faq .faq-stats__row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 12px;
  align-items: baseline;
  padding: 13px 18px;
  border-bottom: 1px solid rgba(217, 226, 240, .12);
}

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

.page-faq .faq-stats__k {
  font-size: 13.5px;
  color: rgba(244, 241, 234, .68);
}

.page-faq .faq-stats__v {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  color: var(--paper);
  white-space: nowrap;
}

/* ── 满宽节奏带 ──────────────────────────── */
.page-faq .faq-band {
  background: var(--steel);
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-band__inner {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  padding: 14px 0;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .05em;
  color: var(--blue);
}

.page-faq .faq-band__item {
  position: relative;
  padding-left: 14px;
}

.page-faq .faq-band__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: .55em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--orange);
}

/* ── 主体骨架 ────────────────────────────── */
.page-faq .faq-body {
  display: grid;
  gap: 4px;
  padding: 8px 0 64px;
}

.page-faq .faq-index {
  padding: 10px 0 4px;
}

.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--faq-rule);
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: start;
  padding: 11px 8px 11px 10px;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--blue);
  transition: background .18s ease, border-color .18s ease;
}

.page-faq .faq-index__link:hover {
  background: rgba(217, 226, 240, .55);
  border-left-color: var(--slate);
}

.page-faq .faq-index__link[aria-current="location"] {
  background: var(--steel);
  border-left-color: var(--orange);
  font-weight: 600;
}

.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  color: var(--slate);
}

.page-faq .faq-index__label {
  display: block;
  font-size: 15px;
  line-height: 1.4;
}

.page-faq .faq-index__cat {
  display: block;
  margin-top: 3px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: .14em;
  color: var(--slate);
}

/* ── 答案区 ──────────────────────────────── */
.page-faq .faq-answers {
  min-width: 0;
}

.page-faq .faq-block {
  padding: 34px 0;
  border-top: 1px solid var(--faq-rule);
  scroll-margin-top: calc(var(--nav-h) + 26px);
}

.page-faq .faq-block:first-child {
  border-top: 0;
  padding-top: 18px;
}

.page-faq .faq-block__head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
  margin-bottom: 4px;
}

.page-faq .faq-block__no {
  font-family: var(--font-mono);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--orange);
}

.page-faq .faq-block__title {
  margin: 0 0 12px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(23px, 5vw, 34px);
  line-height: 1.22;
  color: var(--blue-deep);
}

.page-faq .faq-block__lede {
  margin: 0;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-block__cta {
  margin: 26px 0 0;
}

/* ── 折叠问答 ────────────────────────────── */
.page-faq .qa-group {
  margin-top: 22px;
}

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

.page-faq .qa:last-of-type {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .qa__q {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 18px;
  gap: 10px;
  align-items: center;
  padding: 15px 6px 15px 2px;
  cursor: pointer;
  list-style: none;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--blue-deep);
  transition: background .18s ease;
}

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

.page-faq .qa__q::marker {
  content: "";
}

.page-faq .qa__q:hover {
  background: rgba(91, 107, 132, .07);
}

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 12.5px;
  font-weight: 500;
  color: var(--slate);
  letter-spacing: .04em;
}

.page-faq .qa__mark {
  position: relative;
  width: 16px;
  height: 16px;
  justify-self: end;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--orange);
}

.page-faq .qa__mark::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 2px;
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 2px;
  transition: transform .2s ease;
}

.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}

.page-faq .qa[open] .qa__q {
  color: var(--blue);
}

.page-faq .qa__a {
  padding: 0 6px 20px 54px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--blue-deep);
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 62ch;
}

/* ── 差异来源列表 ────────────────────────── */
.page-faq .faq-diff {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-diff__item {
  padding: 14px 0 14px 16px;
  border-left: 3px solid var(--amber);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-diff__item:first-child {
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-diff__k {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--blue);
}

.page-faq .faq-diff__v {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--blue-deep);
}

/* ── 三级路径 ────────────────────────────── */
.page-faq .faq-path {
  list-style: none;
  margin: 24px 0 4px;
  padding: 0;
}

.page-faq .faq-path__step {
  position: relative;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 22px;
}

.page-faq .faq-path__step::before {
  content: "";
  position: absolute;
  left: 20px;
  top: 46px;
  bottom: 4px;
  width: 1px;
  background: var(--faq-rule);
}

.page-faq .faq-path__step:last-child {
  padding-bottom: 6px;
}

.page-faq .faq-path__step:last-child::before {
  display: none;
}

.page-faq .faq-path__no {
  position: relative;
  z-index: 1;
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border: 1px solid rgba(91, 107, 132, .4);
  border-radius: var(--r-soft-sm);
  background: var(--steel);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  color: var(--blue);
}

.page-faq .faq-path__k {
  display: block;
  margin-bottom: 5px;
  font-size: 16px;
  font-weight: 600;
  color: var(--blue-deep);
}

.page-faq .faq-path__step p {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--slate);
}

/* ── 勘误步骤 ────────────────────────────── */
.page-faq .faq-steps {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
}

.page-faq .faq-steps li {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 13px 0;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-steps li:last-child {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-steps__no {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--orange);
}

.page-faq .faq-steps li p {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.74;
  color: var(--blue-deep);
}

/* ── 联络面板 ────────────────────────────── */
.page-faq .faq-contact {
  display: grid;
  gap: 1px;
  margin-top: 22px;
  border: 1px solid rgba(217, 226, 240, .16);
  border-radius: var(--r-soft);
  overflow: hidden;
  background: rgba(217, 226, 240, .16);
}

.page-faq .faq-contact__item {
  padding: 24px 22px;
  background: linear-gradient(158deg, var(--panel-a) 0%, var(--panel-b) 100%);
}

.page-faq .faq-contact__k {
  margin: 0 0 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--orange);
}

.page-faq .faq-contact__v {
  margin: 0 0 11px;
  font-family: var(--font-mono);
  font-size: 18px;
  font-weight: 500;
  letter-spacing: .01em;
  color: var(--paper);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0;
  max-width: 42ch;
  font-size: 14px;
  line-height: 1.72;
  color: rgba(244, 241, 234, .74);
}

/* ── 正文内链 ────────────────────────────── */
.page-faq .faq-inline-link {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--orange);
}

.page-faq .faq-inline-link:hover {
  background: rgba(255, 90, 31, .12);
}

/* ── 图片容器兜底 ────────────────────────── */
.page-faq .media-frame img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ── 间距微调 ────────────────────────────── */
.page-faq .faq-block .media-frame {
  margin: 22px 0 0;
}

/* ── 响应式 ──────────────────────────────── */
@media (min-width: 640px) {
  .page-faq .faq-hero__grid {
    padding: 52px 0 60px;
  }

  .page-faq .faq-block__head {
    grid-template-columns: 52px minmax(0, 1fr);
    gap: 18px;
  }

  .page-faq .faq-block__no {
    font-size: 30px;
  }

  .page-faq .qa__a {
    padding-left: 54px;
  }

  .page-faq .faq-diff {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 34px;
  }

  .page-faq .faq-diff__item:nth-child(2) {
    border-top: 1px solid var(--faq-rule);
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(270px, .6fr);
    align-items: end;
    gap: 52px;
    padding: 68px 0 76px;
  }

  .page-faq .faq-hero__lede {
    font-size: 17px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    column-gap: 60px;
    padding: 18px 0 96px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--nav-h) + 26px);
    align-self: start;
    padding: 34px 0 0;
    max-height: calc(100vh - var(--nav-h) - 40px);
    overflow-y: auto;
  }

  .page-faq .faq-block {
    padding: 46px 0;
  }

  .page-faq .faq-block:first-child {
    padding-top: 34px;
  }

  .page-faq .qa__q {
    padding: 17px 10px 17px 2px;
    font-size: 17px;
  }

  .page-faq .faq-diff {
    column-gap: 44px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-body {
    grid-template-columns: 224px minmax(0, 1fr);
    column-gap: 76px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__q,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__link {
    transition: none;
  }
}