.page-faq {
  --guide-rail: 216px;
  --guide-hair: rgba(30, 42, 68, .92);
  --guide-text-soft: rgba(244, 247, 255, .78);
  --guide-text-dim: rgba(244, 247, 255, .6);
  position: relative;
  padding-bottom: 40px;
  background:
    radial-gradient(760px 420px at 88% -4%, rgba(53, 224, 208, .1), transparent 64%),
    radial-gradient(620px 520px at -8% 24%, rgba(255, 77, 157, .07), transparent 68%);
}

.page-faq .breadcrumb {
  padding-top: 18px;
}

/* ============ 首屏 ============ */

.page-faq .guide-hero {
  padding: 16px 0 6px;
}

.page-faq .guide-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .guide-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--ice);
}

.page-faq .guide-hero__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(27px, 7vw, 42px);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: .01em;
  color: var(--frost);
}

.page-faq .guide-hero__lead {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--guide-text-soft);
}

.page-faq .guide-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 22px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px solid var(--guide-hair);
}

.page-faq .guide-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .guide-hero__num {
  font-size: 22px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .02em;
}

.page-faq .guide-hero__fact {
  font-size: 13.5px;
  color: var(--stone);
}

/* 首屏路径图 */

.page-faq .guide-map {
  margin: 0;
  padding: 18px 14px 14px;
  border: 1px solid var(--guide-hair);
  border-radius: var(--r-2);
  background: linear-gradient(155deg, rgba(16, 26, 56, .94), rgba(7, 11, 26, .7));
  box-shadow: inset 0 1px 0 rgba(201, 230, 255, .08);
}

.page-faq .guide-map svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .guide-map figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

/* ============ 主体布局 ============ */

.page-faq .guide-layout {
  display: grid;
  gap: 22px;
  padding-top: 26px;
}

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

/* 目录 */

.page-faq .guide-rail {
  position: sticky;
  top: 0;
  z-index: 4;
  padding: 10px 0 12px;
  background: linear-gradient(180deg, rgba(7, 11, 26, .98) 68%, rgba(7, 11, 26, 0));
}

.page-faq .guide-rail__title {
  margin: 0 0 8px;
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--stone);
}

.page-faq .guide-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  overscroll-behavior-x: contain;
}

.page-faq .guide-rail__list::-webkit-scrollbar {
  display: none;
}

.page-faq .guide-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 7px 13px;
  border: 1px solid var(--guide-hair);
  border-radius: 999px;
  font-size: 13px;
  white-space: nowrap;
  color: var(--guide-text-soft);
  text-decoration: none;
  transition: border-color .16s var(--ease), color .16s var(--ease);
}

.page-faq .guide-rail__link .mono {
  font-size: 11px;
  color: var(--ice);
}

.page-faq .guide-rail__link:hover,
.page-faq .guide-rail__link:focus-visible {
  border-color: var(--ice);
  color: var(--ice);
}

/* ============ 章节 ============ */

.page-faq .guide-sec {
  padding-bottom: 34px;
  scroll-margin-top: 88px;
}

.page-faq .guide-sec__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 14px;
  margin-bottom: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--guide-hair);
}

.page-faq .guide-sec__num {
  grid-column: 1;
  grid-row: 1 / span 2;
  font-size: 26px;
  line-height: 1;
  letter-spacing: .04em;
  color: rgba(127, 212, 255, .5);
}

.page-faq .guide-sec__title {
  grid-column: 2;
  grid-row: 1;
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 4.6vw, 25px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--frost);
}

.page-faq .guide-sec__lead {
  grid-column: 2;
  grid-row: 2;
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--guide-text-dim);
}

/* ============ 三条路径 ============ */

.page-faq .path-list {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .path-item {
  padding: 18px 18px 16px;
  border: 1px solid var(--guide-hair);
  border-left: 2px solid rgba(127, 212, 255, .5);
  border-radius: var(--r-1) var(--r-2) var(--r-2) var(--r-1);
  background: linear-gradient(160deg, rgba(16, 26, 56, .84), rgba(7, 11, 26, .5));
}

.page-faq .path-item__num {
  display: inline-block;
  margin-bottom: 11px;
  padding: 3px 10px;
  border: 1px solid rgba(127, 212, 255, .36);
  border-radius: 999px;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ice);
}

.page-faq .path-item__title {
  margin: 0 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--frost);
}

.page-faq .path-item__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--guide-text-soft);
}

.page-faq .path-item__note {
  margin: 12px 0 0;
  padding-top: 10px;
  border-top: 1px dashed rgba(30, 42, 68, .95);
  font-size: 12px;
  color: var(--stone);
}

/* 通用图片框（页面内样式） */

.page-faq .img-frame {
  margin: 22px 0 0;
  border: 1px solid var(--guide-hair);
  border-radius: var(--r-2);
  background: var(--indigo);
  overflow: hidden;
}

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

.page-faq .img-frame__caption {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--guide-hair);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
}

/* ============ 帮助中心分类 ============ */

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

.page-faq .help-cat {
  padding: 16px 16px 15px;
  border: 1px solid var(--guide-hair);
  border-radius: var(--r-2);
  background: rgba(16, 26, 56, .6);
  transition: border-color .16s var(--ease), background-color .16s var(--ease);
}

.page-faq .help-cat:hover,
.page-faq .help-cat:focus-within {
  border-color: rgba(127, 212, 255, .5);
  background: rgba(16, 26, 56, .82);
}

.page-faq .help-cat__code {
  margin: 0;
  font-size: 10.5px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .help-cat__name {
  margin: 8px 0 7px;
  font-size: 16px;
  font-weight: 700;
  color: var(--frost);
}

.page-faq .help-cat__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--guide-text-dim);
}

/* ============ 操作步骤 ============ */

.page-faq .flow {
  display: grid;
  gap: 16px;
}

.page-faq .flow__block {
  padding: 18px 18px 16px;
  border: 1px solid var(--guide-hair);
  border-top: 2px solid rgba(53, 224, 208, .5);
  border-radius: var(--r-1) var(--r-1) var(--r-2) var(--r-2);
  background: linear-gradient(180deg, rgba(16, 26, 56, .72), rgba(7, 11, 26, .44));
}

.page-faq .flow__title {
  display: flex;
  align-items: baseline;
  gap: 9px;
  margin: 0 0 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--frost);
}

.page-faq .flow__title .mono {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--gold);
}

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

.page-faq .flow__steps li {
  position: relative;
  padding: 0 0 14px 24px;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--guide-text-soft);
  counter-increment: flowstep;
}

.page-faq .flow__steps li::before {
  content: counter(flowstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .04em;
  color: var(--ice);
}

.page-faq .flow__steps li::after {
  content: "";
  position: absolute;
  left: 9px;
  top: 18px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, rgba(127, 212, 255, .34), rgba(127, 212, 255, .06));
}

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

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

.page-faq .flow__check {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed rgba(30, 42, 68, .95);
  font-size: 13px;
  line-height: 1.75;
  color: var(--stone);
}

.page-faq .flow__check .mono {
  margin-right: 7px;
  color: var(--cyan);
}

/* ============ 常见问题 ============ */

.page-faq .qa-group {
  margin-top: 20px;
}

.page-faq .qa-group__title {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--ice);
}

.page-faq .qa-list {
  padding-left: 18px;
  border-left: 1px solid var(--guide-hair);
}

.page-faq .qa {
  border-bottom: 1px solid var(--guide-hair);
}

.page-faq .qa__q {
  display: block;
  position: relative;
  padding: 14px 34px 14px 0;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--frost);
  cursor: pointer;
  transition: color .16s var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--ice);
}

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

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .qa__a {
  margin: 0;
  padding: 0 34px 16px 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--guide-text-soft);
}

/* ============ 移动端 ============ */

.page-faq .mobile-notes {
  display: grid;
  gap: 22px;
}

.page-faq .note-list {
  display: grid;
  gap: 16px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .note-list li {
  padding-left: 16px;
  border-left: 2px solid rgba(53, 224, 208, .42);
}

.page-faq .note-list__key {
  display: block;
  margin-bottom: 5px;
  font-size: 15px;
  font-weight: 700;
  color: var(--frost);
}

.page-faq .note-list__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--guide-text-soft);
}

.page-faq .mobile-shot {
  width: 100%;
  max-width: 330px;
  margin: 0 auto;
}

/* ============ 收尾 ============ */

.page-faq .guide-sec--last {
  padding-bottom: 12px;
}

.page-faq .help-out {
  padding: 20px 18px;
  border: 1px solid rgba(255, 196, 107, .3);
  border-radius: var(--r-2);
  background: linear-gradient(150deg, rgba(16, 26, 56, .92), rgba(7, 11, 26, .64));
}

.page-faq .help-out__title {
  margin: 0 0 16px;
  font-size: 17px;
  font-weight: 700;
  color: var(--frost);
}

.page-faq .help-out__channels {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .help-out__channels li {
  display: grid;
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--guide-hair);
}

.page-faq .help-out__label {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--gold);
}

.page-faq .help-out__value {
  font-size: 15px;
  line-height: 1.6;
  color: var(--frost);
  word-break: break-word;
}

.page-faq .help-out__note {
  margin: 16px 0 20px;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--guide-text-dim);
}

.page-faq .guide-next {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

/* ============ 响应式 ============ */

@media (min-width: 640px) {
  .page-faq .help-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .path-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .path-list > .path-item:first-child {
    grid-column: span 2;
  }

  .page-faq .guide-hero__facts {
    gap: 12px 40px;
  }
}

@media (min-width: 900px) {
  .page-faq .flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }

  .page-faq .mobile-notes {
    grid-template-columns: minmax(0, 1fr) 320px;
    align-items: start;
    gap: 40px;
  }
}

@media (min-width: 1000px) {
  .page-faq .guide-hero {
    padding: 34px 0 12px;
  }

  .page-faq .guide-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: center;
    gap: 58px;
  }

  .page-faq .guide-layout {
    grid-template-columns: var(--guide-rail) minmax(0, 1fr);
    gap: 60px;
    padding-top: 52px;
  }

  .page-faq .guide-rail {
    top: 96px;
    padding: 0;
    background: none;
  }

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

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

  .page-faq .guide-rail__link {
    width: 100%;
    justify-content: flex-start;
    padding: 10px 0 10px 14px;
    border: 0;
    border-left: 2px solid var(--guide-hair);
    border-radius: 0;
    font-size: 14px;
  }

  .page-faq .guide-rail__link:hover,
  .page-faq .guide-rail__link:focus-visible {
    border-left-color: var(--cyan);
    color: var(--ice);
  }

  .page-faq .guide-sec {
    padding-bottom: 52px;
    scroll-margin-top: 104px;
  }

  .page-faq .guide-sec__num {
    font-size: 34px;
  }

  .page-faq .help-out {
    padding: 26px 28px;
  }
}

@media (min-width: 1100px) {
  .page-faq .help-cats {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .guide-rail__link,
  .page-faq .help-cat,
  .page-faq .qa__q {
    transition: none;
  }
}
</main>