.page-faq {
  --faq-axis: 88px;
  --faq-axis-gap: 30px;
  --faq-signal-soft: rgba(255, 122, 24, .38);
  --faq-ink-soft: rgba(16, 35, 29, .74);
  background: var(--c-ink);
  color: var(--c-white);
  font-family: var(--f-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 5vw, 52px) 0 clamp(34px, 6vw, 76px);
  background:
    radial-gradient(120% 92% at 88% 0%, rgba(20, 96, 74, .78), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(255, 122, 24, .13), transparent 60%),
    var(--c-ink);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(90deg, var(--c-hairline) 0 1px, transparent 1px 88px),
    repeating-linear-gradient(0deg, var(--c-hairline) 0 1px, transparent 1px 88px);
  opacity: .5;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

.page-faq .faq-hero__lede .breadcrumbs {
  margin-bottom: 18px;
}

.page-faq .faq-hero__lede::before {
  content: "";
  display: block;
  width: 64px;
  height: 4px;
  border-radius: var(--r-pill);
  background: var(--c-signal);
  margin-bottom: 16px;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 0;
  font-family: var(--f-display);
  font-size: clamp(48px, 11vw, 96px);
  line-height: .92;
  letter-spacing: .05em;
  font-weight: 700;
}

.page-faq .faq-hero__sum {
  margin: 20px 0 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(242, 247, 245, .82);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  margin: 26px 0 0;
  padding: 20px 0 0;
  list-style: none;
  border-top: 1px solid var(--c-hairline);
}

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

.page-faq .faq-stat__num {
  font-family: var(--f-mono);
  font-size: 22px;
  font-variant-numeric: tabular-nums;
  color: var(--c-cyan);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  letter-spacing: .08em;
  color: rgba(242, 247, 245, .68);
}

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

/* ---------- 场景索引与筛选 ---------- */
.page-faq .faq-nav {
  background: var(--c-pitch);
  border-top: 1px solid var(--c-hairline);
  border-bottom: 1px solid var(--c-hairline);
  padding: clamp(28px, 4vw, 46px) 0;
}

.page-faq .faq-nav h2 {
  margin: 8px 0 0;
  font-family: var(--f-display);
  font-size: clamp(24px, 3.2vw, 34px);
  letter-spacing: .03em;
  font-weight: 600;
}

.page-faq .faq-jump {
  display: flex;
  gap: 10px;
  margin: 22px 0 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

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

.page-faq .faq-jump a {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: var(--r-pill);
  border: 1px solid var(--c-hairline-strong);
  color: var(--c-white);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--t-fast), background-color var(--t-fast);
}

.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(56, 225, 214, .1);
}

.page-faq .faq-jump .mono {
  font-size: 13px;
  color: var(--c-cyan);
}

.page-faq .faq-filter {
  margin-top: 26px;
  max-width: 460px;
}

.page-faq .faq-filter__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.6;
  letter-spacing: .05em;
  color: rgba(242, 247, 245, .66);
}

/* ---------- 清单主体 ---------- */
.page-faq .faq-body {
  position: relative;
  background: var(--c-paper);
  color: var(--c-ink-on-paper);
  padding: clamp(44px, 7vw, 96px) 0 clamp(52px, 8vw, 108px);
}

.page-faq .faq-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(16, 35, 29, .07) 1px, transparent 1px);
  background-size: 6px 6px;
  opacity: .6;
  pointer-events: none;
}

.page-faq .faq-body .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .faq-body .coord {
  color: var(--c-emerald);
}

.page-faq .faq-body__title {
  margin: 0;
  font-family: var(--f-display);
  font-size: clamp(28px, 4vw, 44px);
  letter-spacing: .04em;
  color: var(--c-ink-on-paper);
}

.page-faq .faq-body__intro {
  margin: 12px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
}

.page-faq .faq-groups {
  position: relative;
  display: grid;
  gap: clamp(46px, 6vw, 84px);
  margin-top: clamp(36px, 5vw, 64px);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  column-gap: 16px;
  align-items: start;
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--c-ink);
  color: var(--c-cyan);
  border: 1px solid var(--c-emerald);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__intro h3 {
  margin: 6px 0 8px;
  font-family: var(--f-display);
  font-size: clamp(25px, 3.4vw, 36px);
  letter-spacing: .03em;
  font-weight: 600;
  color: var(--c-ink-on-paper);
}

.page-faq .faq-group__desc {
  margin: 0;
  max-width: 58ch;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--faq-ink-soft);
}

.page-faq .faq-group__list {
  display: grid;
  gap: 14px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border: 1px solid var(--c-hairline-dark);
  border-radius: var(--r-md);
  background: var(--c-white);
  overflow: hidden;
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
}

.page-faq .qa[open] {
  border-color: var(--faq-signal-soft);
  box-shadow: 0 12px 28px rgba(16, 35, 29, .1);
}

.page-faq .qa__summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--f-display);
  font-size: 18px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--c-ink-on-paper);
}

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

.page-faq .qa__summary::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--c-emerald);
  transition: color var(--t-fast);
}

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

.page-faq .qa__summary:focus-visible {
  outline: 2px solid var(--c-emerald);
  outline-offset: -3px;
  border-radius: var(--r-md);
}

.page-faq .qa__body {
  padding: 0 20px 20px;
  max-width: 72ch;
  font-size: 15.5px;
  line-height: 1.75;
  color: rgba(16, 35, 29, .86);
}

.page-faq .qa__body > * + * {
  margin-top: 12px;
}

.page-faq .qa__body p {
  margin: 0;
}

.page-faq .qa__body ol,
.page-faq .qa__body ul {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .qa__body ol {
  counter-reset: faqstep;
}

.page-faq .qa__body ol > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 32px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .qa__body ol > li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  color: var(--c-signal);
  letter-spacing: .04em;
}

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

.page-faq .qa__body a:hover {
  color: var(--c-signal);
}

.page-faq .faq-figure {
  margin: 16px 0 0;
  border-radius: var(--r-md);
}

/* ---------- 延伸入口 ---------- */
.page-faq .faq-next {
  background:
    linear-gradient(180deg, rgba(11, 59, 46, .55), transparent 70%),
    var(--c-ink);
  border-top: 1px solid var(--c-hairline);
  padding: clamp(40px, 6vw, 78px) 0;
}

.page-faq .faq-next h2 {
  margin: 8px 0 0;
  max-width: 30ch;
  font-family: var(--f-display);
  font-size: clamp(24px, 3.4vw, 36px);
  letter-spacing: .03em;
  font-weight: 600;
  color: var(--c-white);
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 28px;
}

.page-faq .faq-next__link {
  display: grid;
  gap: 7px;
  padding: 20px 22px;
  border-radius: var(--r-md);
  border: 1px solid var(--c-hairline);
  background: linear-gradient(160deg, rgba(11, 59, 46, .92), rgba(6, 35, 28, .92));
  color: var(--c-white);
  text-decoration: none;
  transition: border-color var(--t-fast), transform var(--t-fast);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  border-color: var(--c-amber);
  transform: translateY(-2px);
}

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

.page-faq .faq-next__link strong {
  font-family: var(--f-display);
  font-size: 19px;
  font-weight: 600;
  letter-spacing: .03em;
}

.page-faq .faq-next__desc {
  font-size: 14px;
  line-height: 1.65;
  color: rgba(242, 247, 245, .74);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-group__head {
    grid-template-columns: var(--faq-axis) minmax(0, 1fr);
    column-gap: var(--faq-axis-gap);
  }

  .page-faq .faq-group__num {
    width: 56px;
    height: 56px;
    margin-inline: auto;
    font-size: 18px;
  }

  .page-faq .faq-group__list {
    margin-left: calc(var(--faq-axis) + var(--faq-axis-gap));
  }

  .page-faq .faq-groups::before {
    content: "";
    position: absolute;
    top: 10px;
    bottom: 10px;
    left: calc(var(--faq-axis) / 2 - .5px);
    width: 1px;
    background: var(--c-hairline-dark);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: end;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-jump a,
  .page-faq .faq-next__link,
  .page-faq .qa__summary::after {
    transition: none;
  }

  .page-faq .faq-next__link:hover,
  .page-faq .faq-next__link:focus-visible {
    transform: none;
  }
}