.page-faq {
  color: var(--warm-white);
}

.page-faq .mono {
  font-variant-numeric: tabular-nums;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--hair);
  padding: clamp(20px, 4vw, 32px) 0 clamp(32px, 5.5vw, 64px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -14%;
  right: -18%;
  width: min(52vw, 620px);
  height: min(52vw, 620px);
  background: linear-gradient(140deg, rgba(183, 48, 31, .30), rgba(110, 26, 17, 0) 62%);
  transform: rotate(18deg);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(22px, 3.5vw, 38px);
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}

.page-faq h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.16;
  letter-spacing: -.01em;
  font-weight: 700;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--dim);
}

.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__panel {
  border: 1px solid var(--frame);
  background:
    linear-gradient(158deg, rgba(183, 48, 31, .18), rgba(23, 19, 15, .92) 58%),
    var(--ink-2);
  padding: 20px 18px 16px;
  align-self: end;
}

.page-faq .faq-hero__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero__key {
  font-size: 13px;
  color: var(--mist);
  letter-spacing: .02em;
}

.page-faq .faq-hero__val {
  font-family: var(--font-mono);
  font-size: 13.5px;
  color: var(--gold);
  white-space: nowrap;
}

.page-faq .faq-hero__status {
  margin: 16px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

/* ---------- 通用区块 ---------- */
.page-faq .band {
  padding: clamp(34px, 5.5vw, 68px) 0;
  border-bottom: 1px solid var(--hair);
}

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

.page-faq .section__head {
  display: grid;
  gap: 12px;
  margin-bottom: clamp(24px, 3.5vw, 40px);
}

.page-faq .section__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  line-height: 1.3;
  margin: 8px 0 0;
  font-weight: 700;
}

.page-faq .section__note {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dim);
}

.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 3vw, 32px);
  border: 1px solid var(--frame-soft);
  background: var(--ink-2);
}

/* ---------- 三步 ---------- */
.page-faq .guide__steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
  counter-reset: none;
}

.page-faq .step {
  position: relative;
  border: 1px solid var(--frame-soft);
  border-left: 2px solid var(--cinnabar);
  background: rgba(23, 19, 15, .62);
  padding: 18px 18px 20px;
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-faq .step:hover {
  border-color: var(--frame);
  transform: translateX(2px);
}

.page-faq .step__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--gold);
}

.page-faq .step__title {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 19px;
  line-height: 1.35;
  font-weight: 700;
}

.page-faq .step__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--dim);
}

/* ---------- 问答两栏 ---------- */
.page-faq .qa-layout {
  display: grid;
  gap: clamp(24px, 3.4vw, 48px);
}

.page-faq .qa-index {
  border-top: 1px solid var(--frame);
  padding-top: 16px;
}

.page-faq .qa-index__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--mist);
  text-transform: uppercase;
}

.page-faq .qa-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 18px;
}

.page-faq .qa-index__list a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  color: var(--warm-white);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .18s var(--ease);
}

.page-faq .qa-index__list a:hover,
.page-faq .qa-index__list a:focus-visible {
  border-bottom-color: var(--gold);
}

.page-faq .qa-index__letter {
  font-family: var(--font-mono);
  font-size: 30px;
  line-height: 1;
  color: var(--mist);
  opacity: .55;
  transition: color .24s var(--ease), opacity .24s var(--ease);
}

.page-faq .qa-index__list a:hover .qa-index__letter,
.page-faq .qa-index__list a:focus-visible .qa-index__letter {
  color: var(--gold);
  opacity: 1;
}

.page-faq .qa-index__name {
  font-size: 14px;
  color: var(--dim);
}

.page-faq .qa-index__foot {
  margin: 16px 0 0;
  font-size: 13px;
  color: var(--mist);
}

.page-faq .qa-index__foot a {
  color: var(--gold);
}

/* ---------- 分类与折叠 ---------- */
.page-faq .cat {
  margin-bottom: clamp(30px, 4vw, 52px);
  scroll-margin-top: calc(var(--topbar-h) + 20px);
}

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

.page-faq .cat__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 10px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--frame);
}

.page-faq .cat__badge {
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--ink);
  background: var(--gold);
  width: 24px;
  height: 24px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  align-self: center;
}

.page-faq .cat__name {
  margin: 0;
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  letter-spacing: .01em;
}

.page-faq .cat__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .qa {
  position: relative;
  border: 1px solid var(--frame-soft);
  background: rgba(23, 19, 15, .5);
  margin-bottom: 12px;
  transition: border-color .24s var(--ease);
}

.page-faq .qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 1px;
  height: 0;
  background: linear-gradient(180deg, var(--gold), var(--cinnabar));
  transition: height .26s var(--ease);
}

.page-faq .qa[open]::before {
  height: 100%;
}

.page-faq .qa:hover,
.page-faq .qa[open] {
  border-color: var(--frame);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--warm-white);
}

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

.page-faq .qa > summary::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 8px;
  background: var(--cinnabar);
}

.page-faq .qa > summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--gold);
  transition: transform .2s var(--ease);
}

.page-faq .qa[open] > summary::after {
  content: "–";
}

.page-faq .qa__body {
  padding: 0 16px 16px 36px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--dim);
}

.page-faq .qa__body a {
  color: var(--gold);
}

/* ---------- 额度示例 ---------- */
.page-faq .quota {
  display: grid;
  gap: 16px;
}

.page-faq .quota__card {
  border: 1px solid var(--frame-soft);
  border-top: 2px solid var(--cinnabar);
  background: rgba(23, 19, 15, .58);
  padding: 20px 18px 16px;
}

.page-faq .quota__title {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  line-height: 1.35;
  font-weight: 700;
}

.page-faq .quota__desc {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--dim);
}

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

.page-faq .quota__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--hair);
  font-size: 13.5px;
  color: var(--mist);
}

.page-faq .quota__row .mono {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--gold);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ---------- 联系支持 ---------- */
.page-faq .support {
  display: grid;
  gap: clamp(24px, 3.6vw, 48px);
}

.page-faq .support__figure {
  margin: 0;
  border: 1px solid var(--frame-soft);
  background: var(--ink-2);
}

.page-faq .support__lead {
  margin: 14px 0 24px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--dim);
  max-width: 52ch;
}

.page-faq .support__channels {
  display: grid;
  gap: 12px;
}

.page-faq .support__ch {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 14px;
  border: 1px solid var(--frame-soft);
  border-left: 2px solid var(--gold);
  padding: 12px 14px;
  background: rgba(23, 19, 15, .55);
}

.page-faq .support__key {
  flex: 0 0 auto;
  min-width: 72px;
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .support__val {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--warm-white);
  word-break: break-all;
  text-decoration: none;
}

.page-faq a.support__val:hover,
.page-faq a.support__val:focus-visible {
  color: var(--gold);
}

.page-faq .support__ch .copy-btn {
  margin-left: auto;
}

.page-faq .support__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .support__note a {
  color: var(--gold);
}

/* ---------- 媒体查询 ---------- */
@media (min-width: 700px) {
  .page-faq .guide__steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: end;
  }

  .page-faq .section__head {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    gap: 28px;
  }

  .page-faq .section__note {
    text-align: right;
    max-width: 30ch;
  }

  .page-faq .qa-layout {
    grid-template-columns: 32% minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .qa-index {
    position: sticky;
    top: calc(var(--topbar-h) + 18px);
  }

  .page-faq .qa-index__list {
    display: block;
  }

  .page-faq .qa-index__list a {
    padding: 9px 0;
    border-bottom: 1px solid var(--hair);
  }

  .page-faq .qa-index__list a:hover,
  .page-faq .qa-index__list a:focus-visible {
    border-bottom-color: var(--gold);
  }

  .page-faq .qa-index__letter {
    font-size: 40px;
  }

  .page-faq .support {
    grid-template-columns: minmax(0, .86fr) minmax(0, 1.14fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .qa > summary {
    font-size: 15.5px;
    padding: 17px 18px;
  }

  .page-faq .qa__body {
    padding: 0 18px 18px 38px;
    font-size: 15px;
  }

  .page-faq .qa {
    margin-bottom: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .step,
  .page-faq .qa,
  .page-faq .qa::before,
  .page-faq .qa-index__letter,
  .page-faq .qa-index__list a {
    transition: none;
  }

  .page-faq .step:hover {
    transform: none;
  }
}