.page-faq {
  --faq-idx-w: 236px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(20px, 3vw, 44px) 0 clamp(18px, 2.4vw, 32px);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  right: -90px;
  width: 380px;
  height: 380px;
  background: radial-gradient(circle at 50% 50%, rgba(107, 76, 230, 0.34), rgba(107, 76, 230, 0) 70%);
  pointer-events: none;
}

.page-faq .faq-hero__title {
  position: relative;
  margin: 14px 0 0;
  max-width: 17ch;
  color: var(--paper);
  line-height: 1.04;
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__lead {
  position: relative;
  margin: 22px 0 0;
  max-width: 40em;
  color: var(--paper-72);
  line-height: 1.72;
}

.page-faq .faq-strip {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-strip__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 2px solid var(--line-soft);
  background: rgba(42, 47, 58, 0.4);
  color: var(--paper);
  font-size: var(--fs-14);
  text-decoration: none;
  transition: border-color 180ms ease, color 180ms ease, box-shadow 180ms ease;
}

.page-faq .faq-strip__link .mono {
  color: var(--clay);
  font-size: 12px;
  letter-spacing: 0.14em;
}

.page-faq .faq-strip__link:hover,
.page-faq .faq-strip__link:focus-visible {
  border-color: var(--signal);
  color: var(--signal);
  box-shadow: 5px 5px 0 var(--ink-deep);
}

/* ---------- 横幅 ---------- */
.page-faq .faq-banner {
  margin: clamp(26px, 3.4vw, 48px) 0 0;
}

.page-faq .faq-banner__frame {
  aspect-ratio: 5 / 3;
  overflow: hidden;
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard);
  background: var(--ink-deep);
}

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

.page-faq .faq-banner__cap {
  margin-top: 12px;
  color: var(--paper-58);
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
}

/* ---------- 主布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 2.6vw, 44px);
  padding: clamp(28px, 3.6vw, 56px) 0 var(--section-y);
}

/* ---------- 类目索引 ---------- */
.page-faq .faq-index {
  border: 2px solid var(--line-soft);
  background: rgba(42, 47, 58, 0.55);
  box-shadow: 6px 6px 0 var(--ink-deep);
  padding: 18px 16px 20px;
}

.page-faq .faq-index__list {
  position: relative;
  margin: 16px 0 0;
  padding: 0 0 0 22px;
  list-style: none;
}

.page-faq .faq-index__list::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: var(--clay);
  opacity: 0.75;
}

.page-faq .faq-index__item {
  position: relative;
}

.page-faq .faq-index__item + .faq-index__item {
  margin-top: 14px;
}

.page-faq .faq-index__item::before {
  content: "";
  position: absolute;
  left: -22px;
  top: 7px;
  width: 10px;
  height: 10px;
  border: 2px solid var(--clay);
  background: var(--ink);
  transform: rotate(45deg);
  transition: border-color 180ms ease, background 180ms ease;
}

.page-faq .faq-index__item:hover::before {
  border-color: var(--signal);
  background: var(--signal);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  color: var(--paper);
  font-size: var(--fs-17);
  text-decoration: none;
  letter-spacing: 0.02em;
  transition: color 180ms ease;
}

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

.page-faq .faq-index__n {
  color: var(--paper-58);
  font-size: 12px;
}

.page-faq .faq-index__cta {
  margin-top: 22px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-index__note {
  margin: 0 0 12px;
  color: var(--paper-58);
  font-size: var(--fs-14);
  line-height: 1.7;
}

.page-faq .faq-index__btn {
  display: inline-block;
  width: 100%;
  text-align: center;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 88px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 4.2vw, 60px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--clay);
}

.page-faq .faq-group__no {
  color: var(--clay);
  font-size: var(--fs-14);
  letter-spacing: 0.14em;
}

.page-faq .faq-group__title {
  margin: 0;
  color: var(--paper);
  font-family: var(--font-display);
  letter-spacing: 0.06em;
}

.page-faq .faq-group__meta {
  margin-left: auto;
  color: var(--paper-58);
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
}

/* ---------- 组内配图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 0;
}

.page-faq .faq-figure__frame {
  aspect-ratio: 11 / 7;
  overflow: hidden;
  border: 2px solid var(--line-soft);
  box-shadow: 6px 6px 0 var(--ink-deep);
  background: var(--ink-deep);
}

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

.page-faq .faq-figure__cap {
  margin-top: 10px;
  color: var(--paper-58);
  font-size: var(--fs-14);
  letter-spacing: 0.04em;
}

/* ---------- 折叠问答条目 ---------- */
.page-faq .faq-item {
  margin-top: 16px;
  border: 2px solid var(--line-soft);
  background: linear-gradient(180deg, rgba(42, 47, 58, 0.42), rgba(11, 16, 32, 0.22));
  box-shadow: 4px 4px 0 var(--ink-deep);
  transition: border-color 200ms ease, box-shadow 200ms ease;
}

.page-faq .faq-item:hover {
  border-color: rgba(242, 239, 230, 0.52);
  box-shadow: 8px 8px 0 var(--ink-deep);
}

.page-faq .faq-item[open] {
  border-color: var(--signal);
  box-shadow: 8px 8px 0 var(--ink-deep), inset 0 0 0 1px var(--signal);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-size: var(--fs-17);
  line-height: 1.62;
}

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

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

.page-faq .faq-item__num {
  flex: 0 0 auto;
  margin-top: 3px;
  padding-left: 8px;
  border-left: 2px solid var(--clay);
  color: var(--paper-72);
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.08em;
}

.page-faq .faq-item__text {
  flex: 1 1 auto;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  margin-left: auto;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--signal);
  transition: transform 200ms ease;
}

.page-faq .faq-item__sign::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__sign::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-item__a {
  padding: 16px 18px 20px;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-item__a p {
  margin: 0 0 12px;
  max-width: 38em;
  color: var(--paper-72);
  font-size: var(--fs-17);
  line-height: 1.78;
}

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

/* ---------- 答案内步骤 ---------- */
.page-faq .faq-steps {
  margin: 4px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .faq-step {
  position: relative;
  counter-increment: faqstep;
  padding: 0 0 18px 38px;
}

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

.page-faq .faq-step::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: 0.08em;
  color: var(--paper-58);
  transition: color 200ms ease, text-shadow 200ms ease;
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: 12px;
  top: 24px;
  bottom: 4px;
  width: 1px;
  background: var(--line-soft);
}

.page-faq .faq-step:last-child::after {
  display: none;
}

.page-faq .faq-step:hover::before {
  color: var(--signal);
  text-shadow: 0 0 12px rgba(47, 216, 198, 0.65);
}

.page-faq .faq-step__t {
  margin: 0 0 4px;
  color: var(--paper);
  font-size: var(--fs-17);
  line-height: 1.5;
}

.page-faq .faq-step__d {
  margin: 0;
  max-width: 36em;
  color: var(--paper-72) !important;
  font-size: var(--fs-17);
  line-height: 1.72;
}

/* ---------- 支持区块 ---------- */
.page-faq .faq-support {
  margin-top: clamp(42px, 5vw, 72px);
  padding: clamp(22px, 2.8vw, 40px);
  border: 2px solid var(--line-strong);
  background:
    linear-gradient(15deg, rgba(107, 76, 230, 0.16), rgba(11, 16, 32, 0) 58%),
    rgba(42, 47, 58, 0.5);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-support__title {
  margin: 12px 0 0;
  color: var(--paper);
  font-family: var(--font-display);
  letter-spacing: 0.05em;
}

.page-faq .faq-support__lead {
  margin: 14px 0 0;
  max-width: 40em;
  color: var(--paper-72);
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.4vw, 36px);
  margin-top: clamp(22px, 2.6vw, 34px);
}

.page-faq .faq-support__list {
  margin: 0;
}

.page-faq .faq-support__row {
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-support__row dt {
  color: var(--paper-58);
  font-size: var(--fs-14);
  letter-spacing: 0.06em;
}

.page-faq .faq-support__row dd {
  margin: 6px 0 0;
  color: var(--paper);
  font-size: var(--fs-17);
  line-height: 1.65;
  word-break: break-word;
}

.page-faq .faq-support__row dd.mono {
  font-size: 15px;
  letter-spacing: 0.02em;
}

.page-faq .faq-path {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faqpath;
}

.page-faq .faq-path__item {
  display: flex;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-path__no {
  flex: 0 0 auto;
  color: var(--clay);
  font-size: var(--fs-14);
  letter-spacing: 0.12em;
  line-height: 1.7;
}

.page-faq .faq-path__text {
  color: var(--paper-72);
  font-size: var(--fs-17);
  line-height: 1.7;
}

.page-faq .faq-support__note {
  margin: 24px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--clay);
  color: var(--paper-58);
  font-size: var(--fs-14);
  line-height: 1.78;
}

/* ---------- 页尾行动区 ---------- */
.page-faq .faq-foot {
  display: flex;
  flex-direction: column;
  gap: 18px;
  margin-top: clamp(32px, 4vw, 52px);
  padding-top: 22px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-foot__text {
  margin: 0;
  max-width: 40em;
  color: var(--paper-72);
  font-size: var(--fs-17);
  line-height: 1.75;
}

.page-faq .faq-foot__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .faq-foot__actions .btn {
  display: inline-block;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-banner__frame {
    aspect-ratio: 16 / 7;
  }

  .page-faq .faq-support__grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-foot {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }

  .page-faq .faq-foot__text {
    flex: 1 1 46%;
  }

  .page-faq .faq-foot__actions {
    flex: 0 0 auto;
  }
}

/* ---------- 桌面：类目索引固定成左栏 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 28px;
  }

  .page-faq .faq-group {
    scroll-margin-top: 32px;
  }

  .page-faq .faq-item__q {
    padding: 18px 22px;
  }

  .page-faq .faq-item__a {
    padding: 18px 22px 24px;
  }

  .page-faq .faq-banner {
    margin-top: clamp(30px, 3.8vw, 56px);
  }
}