.page-faq {
  position: relative;
  overflow-x: clip;
  padding-bottom: clamp(48px, 9vw, 104px);
  color: var(--on-dark);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.85;
  background:
    radial-gradient(115% 62% at 90% 0%, rgba(44, 232, 213, .16) 0%, rgba(11, 18, 38, 0) 58%),
    radial-gradient(90% 55% at -6% 34%, rgba(255, 61, 139, .13) 0%, rgba(11, 18, 38, 0) 60%),
    linear-gradient(180deg, var(--night-blue) 0%, var(--table-green) 44%, var(--night-blue) 100%);
}

.page-faq a {
  color: inherit;
}

.page-faq .breadcrumb {
  font-family: var(--font-ui);
  font-size: .82rem;
  letter-spacing: .02em;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  padding-top: clamp(26px, 5vw, 58px);
  padding-bottom: clamp(24px, 4vw, 46px);
}

.page-faq .faq-hero h1 {
  margin: .75rem 0 1rem;
  max-width: 21ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2rem, 6.6vw, 3.5rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--on-dark-strong);
}

.page-faq .faq-hero .lede {
  max-width: 38em;
  margin: 0;
  color: var(--on-dark);
  font-size: clamp(.96rem, 1.6vw, 1.05rem);
  line-height: 1.9;
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(22px, 3.4vw, 34px);
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 10px 16px;
  border: 1px solid var(--line-cyan);
  border-radius: 999px;
  background: rgba(44, 232, 213, .07);
  color: var(--on-dark-strong);
  font-family: var(--font-ui);
  font-size: .93rem;
  font-weight: 700;
  text-decoration: none;
  transition: background .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-jump__count {
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--neon-cyan);
  transition: color .2s var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  background: var(--neon-cyan);
  color: var(--ink);
  transform: translateY(-2px);
}

.page-faq .faq-jump__link:hover .faq-jump__count,
.page-faq .faq-jump__link:focus-visible .faq-jump__count {
  color: rgba(17, 19, 24, .68);
}

/* ---------- 主体栅格 ---------- */

.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

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

/* ---------- 筛选胶囊 ---------- */

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 14px 0 clamp(14px, 2vw, 22px);
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-filter .tag-chip {
  padding: 7px 14px;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: rgba(246, 241, 231, .04);
  color: var(--on-dark);
  font-family: var(--font-ui);
  font-size: .83rem;
  line-height: 1.4;
  cursor: pointer;
  transition: background .18s var(--ease), color .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-filter .tag-chip:hover {
  border-color: var(--line-cyan);
  color: var(--on-dark-strong);
}

.page-faq .faq-filter .tag-chip[aria-pressed="true"] {
  border-color: var(--neon-cyan);
  background: var(--neon-cyan);
  color: var(--ink);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  padding-block: clamp(28px, 5vw, 52px);
  border-bottom: 1px solid var(--line-dark);
  scroll-margin-top: calc(var(--header-h) + 26px);
}

.page-faq .faq-group__head {
  max-width: 46ch;
  margin-bottom: clamp(16px, 2.4vw, 24px);
}

.page-faq .faq-group__head h2 {
  margin: .32rem 0 .55rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.42rem, 3.6vw, 2rem);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--on-dark-strong);
}

.page-faq .faq-group__desc {
  margin: 0;
  color: var(--on-dark);
  font-size: .96rem;
}

/* ---------- 折叠条目 ---------- */

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

.page-faq .faq-item {
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-md);
  background: rgba(246, 241, 231, .045);
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-cyan);
}

.page-faq .faq-item[open] {
  border-color: var(--line-cyan);
  background: rgba(44, 232, 213, .08);
}

.page-faq .faq-item[data-filtered-out] {
  display: none;
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  color: var(--on-dark-strong);
  font-family: var(--font-ui);
  font-size: clamp(.95rem, 1.9vw, 1.04rem);
  font-weight: 700;
  line-height: 1.5;
}

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

.page-faq .faq-item > summary::after {
  content: "";
  justify-self: end;
  width: 9px;
  height: 9px;
  margin-right: 2px;
  border-right: 2px solid var(--neon-cyan);
  border-bottom: 2px solid var(--neon-cyan);
  transform: rotate(45deg);
  transition: transform .2s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-num {
  font-size: clamp(1.35rem, 3vw, 1.9rem);
  line-height: 1;
  letter-spacing: -.03em;
  color: var(--neon-cyan);
  opacity: .82;
}

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

.page-faq .faq-body {
  padding: 0 18px 20px;
  color: var(--on-dark);
  font-size: .95rem;
  line-height: 1.9;
}

.page-faq .faq-body > :first-child {
  margin-top: 0;
}

.page-faq .faq-steps {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 1.25em;
}

.page-faq .faq-steps li {
  padding-left: 2px;
}

.page-faq .faq-steps li::marker {
  color: var(--chip-magenta);
  font-family: var(--font-mono);
  font-weight: 700;
}

.page-faq .faq-note {
  margin: 14px 0 0;
  padding: 9px 13px;
  border-left: 3px solid var(--gold);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(226, 185, 74, .09);
  color: var(--on-dark-strong);
  font-size: .89rem;
}

/* ---------- 校验值样式块 ---------- */

.page-faq .faq-code {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  margin: 16px 0 0;
  padding: 12px 14px;
  border: 1px dashed var(--line-cyan);
  border-radius: var(--radius-sm);
  background: rgba(11, 18, 38, .74);
  font-size: .8rem;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

.page-faq .faq-code__k {
  color: var(--gold);
  letter-spacing: .04em;
}

.page-faq .faq-code__v {
  color: var(--neon-cyan);
}

/* ---------- 图 ---------- */

.page-faq .faq-figure {
  margin: 18px 0 0;
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
}

.page-faq .faq-figure .media-frame__caption {
  font-family: var(--font-ui);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 收尾 ---------- */

.page-faq .faq-escape {
  display: grid;
  gap: 20px;
  margin-top: clamp(30px, 5vw, 54px);
  padding: clamp(22px, 4vw, 36px);
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(135deg, rgba(44, 232, 213, .13) 0%, rgba(59, 31, 94, .3) 52%, rgba(255, 61, 139, .13) 100%);
  box-shadow: var(--shadow-lift);
}

.page-faq .faq-escape__text h2 {
  margin: .3rem 0 .6rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.3rem, 3.2vw, 1.75rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--on-dark-strong);
}

.page-faq .faq-escape__text p {
  max-width: 42em;
  margin: 0;
  color: var(--on-dark);
  font-size: .95rem;
}

.page-faq .faq-escape__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 章节指示条（桌面端） ---------- */

.page-faq .faq-rail {
  display: none;
}

.page-faq .faq-rail .toc-link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 0;
  color: var(--mist);
  font-family: var(--font-ui);
  font-size: .74rem;
  line-height: 1.3;
  text-decoration: none;
  transition: color .2s var(--ease);
}

.page-faq .faq-rail .toc-link::before {
  content: "";
  width: 14px;
  height: 2px;
  border-radius: 2px;
  background: currentColor;
  transition: width .2s var(--ease), background .2s var(--ease);
}

.page-faq .faq-rail .toc-link:hover,
.page-faq .faq-rail .toc-link:focus-visible {
  color: var(--neon-cyan);
}

.page-faq .faq-rail .toc-link[aria-current="true"],
.page-faq .faq-rail .toc-link[data-active="true"] {
  color: var(--neon-cyan);
}

.page-faq .faq-rail .toc-link[aria-current="true"]::before,
.page-faq .faq-rail .toc-link[data-active="true"]::before {
  width: 30px;
  background: var(--neon-cyan);
}

/* ---------- 焦点可见性 ---------- */

.page-faq a:focus-visible,
.page-faq button:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--neon-cyan);
  outline-offset: 3px;
}

/* ---------- 响应式 ---------- */

@media (max-width: 560px) {
  .page-faq .faq-hero h1 {
    max-width: none;
  }

  .page-faq .faq-item > summary {
    gap: 10px;
    padding: 14px 14px;
  }

  .page-faq .faq-body {
    padding: 0 14px 18px;
  }

  .page-faq .faq-jump__link {
    padding: 9px 13px;
    font-size: .88rem;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-escape {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-shell {
    grid-template-columns: minmax(0, 1fr) 76px;
    gap: clamp(28px, 4vw, 56px);
  }

  .page-faq .faq-rail {
    display: flex;
    flex-direction: column;
    gap: 4px;
    position: sticky;
    top: calc(var(--header-h) + 30px);
    align-self: start;
    padding-left: 12px;
    border-left: 1px solid var(--line-dark);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-rail .toc-link,
  .page-faq .faq-rail .toc-link::before {
    transition: none;
  }

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