/* ================= 数据答疑 · 页面专属样式 ================= */

.page-faq {
  display: block;
  background: var(--deep);
  color: var(--paper);
}

/* ---------- 页头 ---------- */
.page-faq .page-faq__head {
  position: relative;
  isolation: isolate;
  padding: calc(var(--bar) + 68px) 0 44px;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(760px 380px at 84% -8%, rgba(47, 123, 255, .30), transparent 68%),
    radial-gradient(560px 300px at -6% 108%, rgba(23, 224, 200, .16), transparent 70%),
    var(--deep);
}

.page-faq .page-faq__head::after {
  content: "";
  position: absolute;
  right: -120px;
  top: -90px;
  width: 440px;
  height: 440px;
  border-radius: 50%;
  border: 1px solid rgba(23, 224, 200, .20);
  box-shadow:
    inset 0 0 0 52px rgba(23, 224, 200, .04),
    inset 0 0 0 104px rgba(47, 123, 255, .05);
  pointer-events: none;
}

.page-faq .page-faq__head .page-head__title {
  position: relative;
  z-index: 1;
  max-width: 15ch;
  margin: 12px 0 18px;
}

.page-faq .page-faq__head .lead {
  position: relative;
  z-index: 1;
  max-width: 660px;
}

/* ---------- 窄通栏氛围图 ---------- */
.page-faq .page-faq__banner {
  position: relative;
  margin: 0;
  height: clamp(118px, 20vw, 196px);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.page-faq .page-faq__banner img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .58;
}

.page-faq .page-faq__banner::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg,
    var(--deep) 0%,
    rgba(6, 26, 51, .30) 42%,
    rgba(6, 26, 51, .82) 78%,
    var(--deep) 100%);
  pointer-events: none;
}

/* ---------- 数据带 ---------- */
.page-faq .faq-strip {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(11, 42, 74, .9), rgba(6, 26, 51, .9));
}

.page-faq .faq-strip__inner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-top: 12px;
  padding-bottom: 12px;
  font-size: var(--fs-2);
  color: var(--mist);
  line-height: 1.5;
}

.page-faq .faq-strip__dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--jump);
  box-shadow: var(--glow-jump);
}

.page-faq .faq-strip .data-num {
  color: var(--surge);
  font-size: var(--fs-3);
}

/* ---------- 分类导览 ---------- */
.page-faq .faq-guide__layout {
  display: grid;
  gap: 22px;
  margin-top: 28px;
}

.page-faq .faq-guide__cards {
  display: grid;
  gap: 12px;
  grid-template-columns: 1fr;
}

.page-faq .guide-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  position: relative;
  padding: 20px 20px 20px 24px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(160deg, rgba(11, 42, 74, .78), rgba(6, 26, 51, .52));
  box-shadow: var(--shadow-1);
  color: inherit;
  text-decoration: none;
  transition: transform .25s ease, border-color .25s ease, box-shadow .25s ease;
}

.page-faq .guide-card::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: 2px;
  background: var(--c, var(--surge));
}

.page-faq .guide-card:hover,
.page-faq .guide-card:focus-visible {
  transform: translateY(-4px);
  border-color: var(--line-strong);
  box-shadow: var(--shadow-2);
}

.page-faq .guide-card__no {
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .08em;
  color: var(--c, var(--surge));
}

.page-faq .guide-card__title {
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.35;
}

.page-faq .guide-card__desc {
  font-size: var(--fs-2);
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-guide__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r-l);
  overflow: hidden;
  background: var(--trench);
  box-shadow: var(--shadow-1);
}

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

.page-faq .faq-guide__figure .media__caption {
  padding: 12px 16px;
  font-size: var(--fs-1);
  line-height: 1.6;
  color: var(--gray);
}

/* ---------- 主体问答布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}

.page-faq .nav-caption {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 9px 13px;
  border-left: 2px solid transparent;
  border-radius: var(--r-s);
  font-size: var(--fs-2);
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  background: rgba(159, 179, 200, .08);
  border-left-color: var(--c, var(--surge));
}

.page-faq .faq-index__dot {
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--c, var(--surge));
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar) + 24px);
}

.page-faq .faq-group + .faq-group,
.page-faq .faq-rule + .faq-group {
  margin-top: 0;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-size: var(--fs-4);
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.35;
}

.page-faq .faq-group__bar {
  flex: none;
  width: 4px;
  height: 20px;
  border-radius: 2px;
  background: var(--c, var(--surge));
}

.page-faq .faq-rule {
  height: 3px;
  margin: 38px 0;
  border-radius: 2px;
  background: linear-gradient(90deg,
    var(--c, var(--surge)) 0%,
    rgba(159, 179, 200, .22) 42%,
    transparent 100%);
  opacity: .7;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: linear-gradient(180deg, rgba(11, 42, 74, .70), rgba(6, 26, 51, .70));
  overflow: hidden;
  transition: border-color .22s ease, box-shadow .22s ease;
}

.page-faq .qa:hover {
  border-color: var(--line-strong);
}

.page-faq .qa[open] {
  border-color: rgba(159, 179, 200, .34);
  box-shadow: var(--shadow-1);
}

.page-faq .qa__head {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px 18px 16px 20px;
  cursor: pointer;
  list-style: none;
  font-size: var(--fs-3);
  font-weight: 600;
  line-height: 1.6;
}

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

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

.page-faq .qa__head::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: var(--c, var(--surge));
  opacity: .5;
  transition: opacity .22s ease;
}

.page-faq .qa[open] .qa__head::before {
  opacity: 1;
}

.page-faq .qa__no {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .06em;
  color: var(--c, var(--surge));
}

.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .qa__chev {
  position: relative;
  flex: none;
  width: 18px;
  height: 18px;
  margin-top: 5px;
}

.page-faq .qa__chev::before,
.page-faq .qa__chev::after {
  content: "";
  position: absolute;
  left: 3px;
  right: 3px;
  top: 50%;
  height: 1.5px;
  border-radius: 1px;
  background: var(--mist);
  transform: translateY(-50%);
  transition: transform .26s ease, background .26s ease;
}

.page-faq .qa__chev::after {
  transform: translateY(-50%) rotate(90deg);
}

.page-faq .qa[open] .qa__chev::after {
  transform: translateY(-50%) rotate(0deg);
}

.page-faq .qa[open] .qa__chev::before {
  background: var(--c, var(--surge));
}

.page-faq .qa__body {
  padding: 0 18px 18px 52px;
  font-size: var(--fs-3);
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .qa__body p {
  margin: 0 0 10px;
  max-width: 68ch;
}

.page-faq .qa__body p:last-of-type {
  margin-bottom: 0;
}

.page-faq .qa__steps {
  margin: 12px 0 4px;
  padding: 0;
  list-style: none;
  counter-reset: qa-step;
}

.page-faq .qa__steps li {
  position: relative;
  padding-left: 36px;
  margin-bottom: 9px;
  counter-increment: qa-step;
}

.page-faq .qa__steps li::before {
  content: counter(qa-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 4px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .06em;
  color: var(--jump);
}

.page-faq .qa__anchor {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-1);
  letter-spacing: .04em;
  color: var(--gray);
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
  transition: color .2s ease, border-color .2s ease;
}

.page-faq .qa__anchor:hover,
.page-faq .qa__anchor:focus-visible {
  color: var(--surge);
  border-bottom-color: var(--surge);
}

/* ---------- 需人工协助区块 ---------- */
.page-faq .faq-help {
  position: relative;
  border-top: 1px solid var(--line);
  background:
    radial-gradient(620px 300px at 92% 0%, rgba(255, 122, 41, .14), transparent 68%),
    var(--trench);
}

.page-faq .faq-help__inner {
  display: grid;
  gap: 26px;
}

.page-faq .faq-help__lead .lead {
  max-width: 620px;
  margin-top: 14px;
}

.page-faq .faq-help__cards {
  display: grid;
  gap: 10px;
}

.page-faq .qa--help {
  background: linear-gradient(180deg, rgba(6, 26, 51, .78), rgba(6, 26, 51, .58));
}

.page-faq .qa--help[open] .qa__head::before {
  background: var(--jump);
}

.page-faq .qa--help .qa__no {
  color: var(--jump);
}

.page-faq .qa--help[open] .qa__chev::before {
  background: var(--jump);
}

.page-faq .faq-help__more {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 10px 0 0;
}

.page-faq .faq-help__more .btn {
  text-decoration: none;
}

/* ---------- 悬停上浮与焦点反馈 ---------- */
.page-faq .guide-card:focus-visible,
.page-faq .faq-index__link:focus-visible,
.page-faq .qa__anchor:focus-visible,
.page-faq .faq-help__more .btn:focus-visible {
  outline: 1.5px solid var(--surge);
  outline-offset: 2px;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-guide__cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-help__more {
    grid-column: 1 / -1;
  }
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1024px) {
  .page-faq .page-faq__head {
    padding: calc(var(--bar) + 88px) 0 58px;
  }

  .page-faq .faq-guide__layout {
    grid-template-columns: minmax(0, 1fr) 340px;
    gap: 32px;
    align-items: start;
  }

  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 54px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar) + 28px);
  }

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

  .page-faq .faq-index__link {
    white-space: normal;
  }

  .page-faq .faq-rule {
    margin: 46px 0;
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 520px);
    gap: 48px;
    align-items: start;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 480px) {
  .page-faq .page-faq__head::after {
    display: none;
  }

  .page-faq .qa__head {
    gap: 10px;
    padding: 14px 14px 14px 16px;
    font-size: var(--fs-2);
  }

  .page-faq .qa__body {
    padding: 0 14px 16px 16px;
    font-size: var(--fs-2);
  }

  .page-faq .qa__steps li {
    padding-left: 30px;
  }

  .page-faq .faq-group__title {
    font-size: var(--fs-3);
  }
}

/* ---------- 降低动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .guide-card,
  .page-faq .qa,
  .page-faq .qa__chev::before,
  .page-faq .qa__chev::after,
  .page-faq .faq-index__link {
    transition: none;
  }

  .page-faq .guide-card:hover {
    transform: none;
  }
}

.page-faq {
  --c: transparent;
}