.page-faq {
  --faq-rail-w: 264px;
  --faq-fade: linear-gradient(180deg, rgba(0, 229, 196, 0) 0%, rgba(0, 229, 196, .55) 50%, rgba(0, 229, 196, 0) 100%);
  position: relative;
  padding-bottom: clamp(72px, 10vw, 148px);
  background:
    radial-gradient(1000px 480px at 90% -6%, rgba(0, 229, 196, .10), transparent 62%),
    radial-gradient(700px 460px at 2% 26%, rgba(124, 92, 255, .09), transparent 64%);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4vw, 44px) 0 clamp(30px, 5vw, 62px);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -90px;
  right: -110px;
  width: 360px;
  height: 360px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(0, 229, 196, .16), transparent 68%);
  pointer-events: none;
}

.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(20px, 3.4vw, 38px);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .05em;
  color: var(--c-muted);
}

.page-faq .breadcrumb__item {
  color: var(--c-muted);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-faq a.breadcrumb__item:hover,
.page-faq a.breadcrumb__item:focus-visible {
  color: var(--c-cyan-soft);
}

.page-faq .breadcrumb__item[aria-current="page"] {
  color: var(--c-text);
}

.page-faq .breadcrumb__sep {
  color: var(--c-line);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 3.4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero__lead {
  max-width: 62ch;
}

.page-faq .faq-hero__lead .kicker {
  margin: 0 0 14px;
}

.page-faq .faq-hero__lead h1 {
  margin: 0 0 clamp(16px, 2vw, 24px);
  max-width: 18ch;
}

.page-faq .faq-hero__lead .lead {
  margin: 0;
  max-width: 56ch;
}

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

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  padding-top: clamp(34px, 5vw, 72px);
}

.page-faq .faq-rail {
  position: static;
  padding: 16px 18px;
  border: 1px solid var(--c-line);
  border-radius: 4px;
  background: rgba(11, 39, 64, .62);
}

.page-faq .faq-rail .rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--c-muted);
}

.page-faq .faq-rail .rail__list {
  display: flex;
  gap: 10px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail .rail__list li {
  flex: 0 0 auto;
}

.page-faq .rail__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid transparent;
  border-radius: 3px;
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--c-soft);
  text-decoration: none;
  transition: color .25s var(--ease), border-color .25s var(--ease), background-color .25s var(--ease);
}

.page-faq .rail__link:hover,
.page-faq .rail__link:focus-visible {
  color: var(--c-cyan-soft);
  border-color: var(--c-line);
}

.page-faq .rail__link[aria-current="true"] {
  color: var(--c-deep);
  background: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  opacity: .75;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  display: flex;
  flex-direction: column;
  gap: clamp(40px, 6vw, 88px);
  min-width: 0;
}

.page-faq .faq-section {
  scroll-margin-top: 110px;
  padding-top: clamp(6px, 1.4vw, 14px);
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-section__head {
  margin-bottom: clamp(18px, 2.6vw, 30px);
}

.page-faq .faq-section__no {
  display: block;
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--c-cyan);
}

.page-faq .faq-section__head h2 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: clamp(24px, 4.4vw, 38px);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: .015em;
  color: var(--c-text);
}

.page-faq .faq-section__note {
  margin: 0;
  max-width: 54ch;
  color: var(--c-muted);
  font-size: 15px;
  line-height: 1.7;
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0 0 clamp(22px, 3vw, 36px);
  padding: 0;
  list-style: none;
  border-left: 1px solid var(--c-line);
}

.page-faq .step-item {
  position: relative;
  padding: 0 0 clamp(18px, 2.6vw, 28px) clamp(20px, 3vw, 30px);
}

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

.page-faq .step-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 8px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  background: var(--c-cyan);
  box-shadow: 0 0 0 4px rgba(0, 229, 196, .14);
}

.page-faq .step-item__no {
  display: block;
  margin-bottom: 6px;
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--c-cyan);
}

.page-faq .step-item__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 600;
  line-height: 1.4;
  color: var(--c-text);
}

.page-faq .step-item p {
  margin: 0;
  max-width: 56ch;
  color: var(--c-soft);
  font-size: 15px;
  line-height: 1.72;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq {
  border-top: 1px solid var(--c-line);
}

.page-faq .faq__item {
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq__q-wrap {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}

.page-faq .faq__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  width: 100%;
  padding: clamp(15px, 2vw, 20px) 0;
  border: 0;
  background: transparent;
  text-align: left;
  font-family: var(--font-body);
  font-size: clamp(15px, 2.4vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--c-text);
  cursor: pointer;
  transition: color .25s var(--ease);
}

.page-faq .faq__q:hover,
.page-faq .faq__q:focus-visible {
  color: var(--c-cyan-soft);
}

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

.page-faq .faq__icon::before,
.page-faq .faq__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--c-cyan);
  transform: translate(-50%, -50%);
  transition: transform .28s var(--ease), opacity .28s var(--ease);
}

.page-faq .faq__icon::before {
  width: 14px;
  height: 1.5px;
}

.page-faq .faq__icon::after {
  width: 1.5px;
  height: 14px;
}

.page-faq .faq__q[aria-expanded="true"] .faq__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq__a {
  padding: 0 0 clamp(16px, 2.2vw, 22px);
  max-width: 62ch;
}

.page-faq .faq__a p {
  margin: 0;
  color: var(--c-soft);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq__a a {
  color: var(--c-cyan-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq__a a:hover,
.page-faq .faq__a a:focus-visible {
  color: var(--c-cyan);
}

/* ---------- 分屏：文字 + 竖图 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  align-items: start;
}

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

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

.page-faq .faq-figure .figure__frame {
  overflow: hidden;
  border-radius: 4px;
  background: var(--c-panel);
}

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

.page-faq .faq-figure .figure__caption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

.page-faq .figure--tall .figure__frame {
  max-width: 420px;
}

/* ---------- 复制路径 ---------- */
.page-faq .copy-field {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-top: clamp(16px, 2.4vw, 26px);
  padding: 12px 14px;
  border: 1px dashed var(--c-line);
  border-radius: 4px;
  background: rgba(7, 27, 46, .78);
}

.page-faq .copy-field__value {
  flex: 1 1 200px;
  min-width: 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--c-cyan-soft);
  word-break: break-word;
}

.page-faq .copy-field__btn {
  flex: 0 0 auto;
  padding: 7px 14px;
  border: 1px solid var(--c-cyan);
  border-radius: 3px;
  background: transparent;
  color: var(--c-cyan);
  font-family: var(--font-body);
  font-size: 13px;
  cursor: pointer;
  transition: background-color .25s var(--ease), color .25s var(--ease);
}

.page-faq .copy-field__btn:hover,
.page-faq .copy-field__btn:focus-visible {
  background: var(--c-cyan);
  color: var(--c-deep);
}

/* ---------- 结尾区块 ---------- */
.page-faq .faq-section--end {
  border-top-color: var(--c-cyan);
}

.page-faq .faq-help {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 34px);
  padding: clamp(20px, 3vw, 32px);
  border-radius: 6px;
  background:
    linear-gradient(140deg, rgba(0, 229, 196, .12), rgba(124, 92, 255, .10) 62%, rgba(255, 106, 43, .10));
  border: 1px solid var(--c-line);
}

.page-faq .faq-help__main p {
  margin: 0 0 18px;
  max-width: 52ch;
  color: var(--c-text);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-faq .faq-help__links {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__links a {
  display: block;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(18, 64, 92, .8);
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-soft);
  text-decoration: none;
  transition: color .25s var(--ease);
}

.page-faq .faq-help__links li:last-child a {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-help__links a:hover,
.page-faq .faq-help__links a:focus-visible {
  color: var(--c-cyan-soft);
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1fr) auto;
    gap: clamp(24px, 4vw, 60px);
  }

  .page-faq .faq-hero__tags {
    justify-content: flex-end;
    max-width: 22ch;
  }

  .page-faq .step-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(16px, 2.4vw, 30px);
    border-left: 0;
    border-top: 1px solid var(--c-line);
    padding-top: clamp(20px, 2.6vw, 30px);
  }

  .page-faq .step-item {
    padding: 0;
  }

  .page-faq .step-item::before {
    left: 0;
    top: -37px;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, .85fr);
    gap: clamp(24px, 3.4vw, 46px);
  }

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

/* ---------- 桌面：左侧悬浮索引 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 66px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
    max-height: calc(100vh - 150px);
    overflow-y: auto;
    padding: 20px 20px 24px;
  }

  .page-faq .faq-rail .rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .rail__link {
    width: 100%;
    white-space: normal;
    padding: 9px 12px;
    font-size: 13.5px;
  }

  .page-faq .faq-section__head h2 {
    max-width: 22ch;
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, .8fr);
  }
}

/* ---------- 大屏 ---------- */
@media (min-width: 1320px) {
  .page-faq .faq-rail {
    --faq-rail-w: 284px;
  }

  .page-faq .faq-body {
    gap: clamp(56px, 6vw, 104px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .rail__link,
  .page-faq .faq__q,
  .page-faq .faq__icon::before,
  .page-faq .faq__icon::after,
  .page-faq .copy-field__btn,
  .page-faq .faq-help__links a {
    transition: none;
  }
}