.page-faq {
  --faq-glass: rgba(17, 27, 63, .58);
  --faq-glass-solid: rgba(17, 27, 63, .9);
  --faq-rule: rgba(124, 141, 181, .22);
  padding-bottom: clamp(2.6rem, 7vw, 5rem);
  overflow-wrap: break-word;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  margin: clamp(.9rem, 3vw, 1.6rem) 0 clamp(1.8rem, 5vw, 3rem);
  padding: clamp(1.6rem, 5vw, 3.2rem) clamp(1.15rem, 4vw, 2.8rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 6% 0%, rgba(255, 107, 26, .16), transparent 44%),
    radial-gradient(110% 130% at 100% 100%, rgba(0, 229, 199, .13), transparent 48%),
    var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(124, 141, 181, .14) 1px, transparent 1px),
    linear-gradient(90deg, rgba(124, 141, 181, .14) 1px, transparent 1px);
  background-size: 96px 96px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, .85), transparent 78%);
  pointer-events: none;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: .5rem 0 .9rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 7vw, 3.2rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -.01em;
  color: var(--paper);
  max-width: 22ch;
}

.page-faq .faq-hero .lede {
  max-width: 62ch;
  color: var(--body);
  font-size: clamp(.98rem, 2.4vw, 1.1rem);
  line-height: 1.75;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: .45rem;
  margin: 1.3rem 0 0;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1.4rem, 4vw, 2.8rem);
}

/* ---------- 分类锚点 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: .95rem 1rem 1.05rem;
  background: rgba(10, 17, 40, .62);
  -webkit-backdrop-filter: blur(7px);
  backdrop-filter: blur(7px);
}

.page-faq .faq-index__label {
  margin: 0 0 .7rem;
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index ol {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: .12rem;
}

.page-faq .faq-index a {
  display: flex;
  align-items: baseline;
  gap: .55rem;
  padding: .42rem .5rem;
  border-left: 2px solid transparent;
  border-radius: var(--r-sm);
  color: var(--soft);
  font-size: .9rem;
  line-height: 1.45;
  text-decoration: none;
  transition: color var(--t-fast), background var(--t-fast), border-color var(--t-fast);
}

.page-faq .faq-index a:hover,
.page-faq .faq-index a:focus-visible {
  color: var(--paper);
  background: var(--orange-soft);
  border-left-color: var(--orange);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: .72rem;
  color: var(--muted);
}

.page-faq .faq-index a:hover .faq-index__num,
.page-faq .faq-index a:focus-visible .faq-index__num {
  color: var(--orange);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: calc(var(--bar-h) + 1.2rem);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(1.8rem, 5vw, 3rem);
  padding-top: clamp(1.6rem, 4vw, 2.4rem);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: .3rem .8rem;
  margin-bottom: 1rem;
}

.page-faq .faq-group__num {
  grid-row: 1 / span 2;
  font-family: var(--font-mono);
  font-size: clamp(.95rem, 2.6vw, 1.15rem);
  color: var(--orange);
  letter-spacing: .04em;
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 4.6vw, 2rem);
  font-weight: 700;
  line-height: 1.12;
  color: var(--paper);
}

.page-faq .faq-group__lead {
  grid-column: 2;
  margin: 0;
  color: var(--muted);
  font-size: .92rem;
  line-height: 1.65;
}

/* ---------- 配图 ---------- */
.page-faq .faq-media {
  margin: 0 0 1.1rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--ink-900);
  overflow: hidden;
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 3 / 2;
}

.page-faq .faq-media__caption {
  padding: .55rem .9rem;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .02em;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .qa {
  margin-bottom: .62rem;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-glass);
  transition: border-color var(--t-fast), background var(--t-fast);
}

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

.page-faq .qa[open] {
  border-color: rgba(255, 107, 26, .42);
  background: var(--faq-glass-solid);
}

.page-faq .qa > summary {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: .95rem 1.05rem;
  cursor: pointer;
  list-style: none;
  color: var(--paper);
  font-weight: 600;
  font-size: clamp(.95rem, 2.6vw, 1.02rem);
  line-height: 1.5;
  transition: color var(--t-fast);
}

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

.page-faq .qa > summary:hover,
.page-faq .qa > summary:focus-visible {
  color: var(--orange);
}

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

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: .12rem;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color var(--t-fast);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--cyan);
  border-radius: 1px;
}

.page-faq .qa__icon::before {
  width: 10px;
  height: 2px;
}

.page-faq .qa__icon::after {
  width: 2px;
  height: 10px;
  transition: transform var(--t-fast);
}

.page-faq .qa[open] .qa__icon {
  border-color: rgba(255, 107, 26, .65);
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.1rem;
  color: var(--body);
  font-size: .94rem;
  line-height: 1.78;
}

.page-faq .qa__a p {
  margin: 0 0 .6rem;
}

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

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

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--orange);
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  list-style: none;
  counter-reset: faq-step;
  margin: .7rem 0 .7rem;
  padding: 0;
  display: grid;
  gap: .5rem;
}

.page-faq .steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 2.5rem;
  min-height: 1.5rem;
}

.page-faq .steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .09rem;
  padding: .1rem .38rem;
  border-radius: 4px;
  background: var(--cyan);
  color: var(--ink-950);
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 600;
  line-height: 1.4;
}

/* ---------- 求助面板 ---------- */
.page-faq .faq-group--help .faq-group__head {
  margin-bottom: 1.1rem;
}

.page-faq .faq-help {
  display: grid;
  gap: 1.1rem;
  padding: clamp(1.1rem, 3.5vw, 1.7rem);
  border-radius: var(--r-md);
  border-left: 3px solid var(--orange);
}

.page-faq .faq-help__title {
  margin: 0 0 .4rem;
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 3.4vw, 1.32rem);
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-help__text p {
  margin: 0;
  color: var(--body);
  font-size: .94rem;
  line-height: 1.75;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
    gap: .35rem 1rem;
  }

  .page-faq .qa > summary {
    padding: 1.05rem 1.25rem;
  }

  .page-faq .qa__a {
    padding: 0 1.25rem 1.25rem;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--bar-h) + 1.4rem);
  }

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

  .page-faq .faq-media {
    margin-bottom: 1.4rem;
  }

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

  .page-faq .faq-help__actions {
    flex-wrap: nowrap;
    justify-content: flex-end;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero {
    padding-right: clamp(4rem, 14vw, 11rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__icon,
  .page-faq .qa__icon::after,
  .page-faq .faq-index a {
    transition: none;
  }
}
</PAGE_CSS>