.page-faq {
  --faq-pad-y: clamp(2rem, 4.6vw, 3.4rem);
  background: var(--cream);
  color: var(--brown);
  font-family: var(--f-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 4vw, 2.4rem) clamp(2.2rem, 5vw, 3.4rem);
  background:
    radial-gradient(120% 90% at 88% 6%, rgba(47, 224, 200, .13), transparent 55%),
    linear-gradient(158deg, var(--night) 0%, var(--abyss) 82%);
  border-bottom: 1px solid var(--line);
  color: var(--cream);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -10%;
  bottom: -48%;
  width: 58%;
  aspect-ratio: 1 / 1;
  border: 1px solid var(--line-soft);
  border-radius: 4px;
  transform: rotate(18deg);
  pointer-events: none;
}

.page-faq .faq-hero__crumb {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(1rem, 2.6vw, 1.6rem);
}

.page-faq .faq-hero .breadcrumb__link {
  color: var(--slate);
}

.page-faq .faq-hero .breadcrumb__link[aria-current="page"] {
  color: var(--cream);
}

.page-faq .faq-hero .breadcrumb__sep {
  color: var(--line-soft);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.4rem, 3.4vw, 2.4rem);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 .7rem;
  font-family: var(--f-mono);
  font-size: .76rem;
  letter-spacing: .16em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 .9rem;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.4vw, 3.3rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--cream-hi);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 56ch;
  color: var(--slate);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-hero__snap {
  padding: clamp(.9rem, 2.4vw, 1.3rem);
  border: 1px solid var(--line);
  background: rgba(6, 14, 23, .55);
  box-shadow: var(--shadow-dark);
}

.page-faq .faq-hero__snap .data-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: .9rem 1.1rem;
}

.page-faq .faq-hero__snap .data-cell__k {
  margin: 0 0 .3rem;
  font-size: .74rem;
  letter-spacing: .08em;
  color: var(--slate);
}

.page-faq .faq-hero__snap .data-cell__v {
  margin: 0;
  font-size: .92rem;
  color: var(--cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.6rem, 4vw, 2.6rem);
  padding-block: var(--faq-pad-y) clamp(3rem, 7vw, 5rem);
}

.page-faq .faq-rail__filter {
  display: grid;
  gap: .6rem;
}

.page-faq .filter__input {
  width: 100%;
  padding: .7rem .8rem;
  border: 1px solid var(--line-cream);
  border-radius: var(--radius);
  background: var(--cream-hi);
  color: var(--brown);
  font-family: var(--f-body);
  font-size: .92rem;
}

.page-faq .filter__input::placeholder {
  color: var(--brown-2);
  opacity: .8;
}

.page-faq .filter__input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 3px rgba(47, 224, 200, .28);
}

.page-faq .faq-rail__filter-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .8rem;
}

.page-faq .filter__count {
  margin: 0;
  font-family: var(--f-mono);
  font-size: .78rem;
  color: var(--brown-2);
}

.page-faq .filter__clear {
  padding: 0;
  border: 0;
  background: none;
  color: var(--clay);
  font-family: var(--f-body);
  font-size: .78rem;
  text-decoration: underline;
  cursor: pointer;
}

.page-faq .faq-rail__nav {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: .18rem;
  margin-top: 1.1rem;
  padding-top: 1.1rem;
  border-top: 1px solid var(--line-cream);
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: .6rem;
  padding: .62rem .8rem .62rem .85rem;
  border-left: 2px solid var(--line-cream);
  color: var(--brown-2);
  font-size: .92rem;
  line-height: 1.4;
  text-decoration: none;
  transition: background .25s var(--ease), color .25s var(--ease), border-color .25s var(--ease), transform .25s var(--ease);
}

.page-faq .faq-rail__link:hover {
  color: var(--brown);
  border-left-color: var(--clay);
  transform: translateX(2px);
}

.page-faq .faq-rail__link:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 2px;
}

.page-faq .faq-rail__link.is-active {
  background: var(--clay);
  border-left-color: var(--clay-hi);
  color: #fff;
}

.page-faq .faq-rail__idx {
  font-size: .74rem;
  letter-spacing: .06em;
  opacity: .9;
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  position: relative;
  padding-top: clamp(1.8rem, 4vw, 2.6rem);
  scroll-margin-top: calc(var(--header-h) + 1.4rem);
}

.page-faq .faq-group:first-child {
  padding-top: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: .4rem;
  border-top: 1px solid var(--line-cream);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: -2px;
  left: 0;
  width: 64px;
  height: 3px;
  background: var(--clay);
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: .25rem 1rem;
  align-items: start;
  margin-bottom: 1.1rem;
}

.page-faq .faq-group__num {
  margin: 0;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 4.4vw, 2.9rem);
  line-height: .92;
  color: transparent;
  -webkit-text-stroke: 1px rgba(35, 26, 19, .34);
}

@supports not (-webkit-text-stroke: 1px black) {
  .page-faq .faq-group__num {
    color: rgba(35, 26, 19, .22);
  }
}

.page-faq .faq-group__head h2 {
  margin: 0 0 .5rem;
  font-family: var(--f-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 2.7vw, 1.8rem);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--brown);
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 62ch;
  color: var(--brown-2);
  font-size: .97rem;
  line-height: 1.8;
}

.page-faq .faq-figure {
  max-width: 680px;
  margin: 0 0 1.2rem;
}

.page-faq .faq-figure .figure__media {
  overflow: hidden;
  border: 1px solid var(--line-cream);
  background: var(--night);
}

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

.page-faq .faq-figure .figure__cap {
  margin-top: .6rem;
  color: var(--brown-2);
  font-size: .82rem;
  line-height: 1.7;
}

/* ---------- 手风琴 ---------- */
.page-faq .accordion {
  border-top: 1px solid var(--line-cream);
}

.page-faq .accordion__item {
  position: relative;
  border-bottom: 1px solid var(--line-cream);
}

.page-faq .accordion__item::after {
  content: "";
  position: absolute;
  inset-block: 0;
  inset-inline-start: 0;
  width: 2px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform .34s var(--ease);
}

.page-faq .accordion__item.is-open::after,
.page-faq .accordion__item:has(.accordion__btn[aria-expanded="true"])::after {
  transform: scaleY(1);
}

.page-faq .accordion__item > h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: inherit;
}

.page-faq .accordion__btn {
  display: flex;
  align-items: flex-start;
  gap: .85rem;
  width: 100%;
  padding: .95rem 0 .95rem 1rem;
  border: 0;
  background: none;
  color: var(--brown);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: clamp(1rem, 2vw, 1.12rem);
  line-height: 1.42;
  text-align: left;
  cursor: pointer;
  transition: color .2s var(--ease);
}

.page-faq .accordion__btn::before {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--f-mono);
  font-weight: 400;
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--clay);
  transition: transform .28s var(--ease), color .28s var(--ease);
}

.page-faq .accordion__btn:hover {
  color: var(--clay);
}

.page-faq .accordion__btn:focus-visible {
  outline: 2px solid var(--clay);
  outline-offset: 2px;
}

.page-faq .accordion__btn[aria-expanded="true"] {
  color: var(--clay);
}

.page-faq .accordion__btn[aria-expanded="true"]::before {
  transform: rotate(135deg);
}

.page-faq .accordion__panel {
  padding: 0 0 1.1rem 1rem;
}

.page-faq .accordion__panel > div {
  padding-left: 1.45rem;
  border-left: 1px solid var(--line-cream);
}

.page-faq .accordion__panel p {
  margin: 0 0 .7rem;
  max-width: 64ch;
  color: var(--brown-2);
  font-size: .96rem;
  line-height: 1.85;
}

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

.page-faq .faq-group__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .5rem;
  margin: 1.1rem 0 0;
  color: var(--brown-2);
  font-size: .9rem;
}

.page-faq .faq-group__link {
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(194, 69, 42, .42);
  color: var(--clay);
  font-weight: 600;
  text-decoration: none;
}

.page-faq .faq-group__link:hover {
  border-bottom-color: var(--clay);
}

/* ---------- 响应式 ---------- */
@media (min-width: 480px) and (max-width: 959px) {
  .page-faq .faq-rail__nav {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .3rem .8rem;
  }
}

@media (min-width: 560px) {
  .page-faq .faq-hero__snap .data-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: end;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(220px, 266px) minmax(0, 1fr);
    gap: clamp(2rem, 4.4vw, 3.6rem);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-h) + 1.2rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .accordion__btn,
  .page-faq .accordion__btn::before,
  .page-faq .accordion__item::after {
    transition: none;
  }
}