.page-faq {
  --faq-line: 3px solid var(--rock);
  --faq-gap: clamp(20px, 3vw, 40px);
  background: var(--cream);
  color: var(--ink);
  font-family: var(--font-body);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--night);
  padding-block: calc(var(--header-h) + clamp(40px, 8vh, 96px)) clamp(80px, 12vw, 140px);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 48px), 0 100%);
}

.page-faq .faq-hero-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: .46;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(155deg, rgba(20, 23, 26, .95) 0%, rgba(20, 23, 26, .62) 48%, rgba(158, 43, 32, .66) 100%);
}

.page-faq .faq-hero-inner {
  position: relative;
  z-index: 2;
}

.page-faq .faq-hero .crumbs {
  color: rgba(243, 238, 230, .7);
}

.page-faq .faq-hero .crumbs a {
  color: var(--neon);
  text-decoration: none;
}

.page-faq .faq-hero .faq-lede {
  max-width: 40em;
  margin-top: clamp(18px, 3vw, 28px);
  color: rgba(243, 238, 230, .86);
  font-size: clamp(16px, 1.7vw, 18px);
  line-height: 1.8;
}

.page-faq .faq-hero-facts {
  list-style: none;
  margin: clamp(28px, 5vw, 48px) 0 0;
  padding: 20px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: clamp(20px, 5vw, 56px);
  border-top: 3px solid rgba(243, 238, 230, .26);
}

.page-faq .faq-hero-facts li {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-hero-facts .num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(28px, 4.4vw, 44px);
  line-height: 1;
  color: var(--neon);
}

.page-faq .fact-t {
  font-size: 13px;
  letter-spacing: .08em;
  color: rgba(243, 238, 230, .74);
}

/* ---------- 筛选工具条 ---------- */
.page-faq .faq-toolbar {
  position: sticky;
  top: var(--header-h);
  z-index: 20;
  background: var(--rock);
  border-top: var(--faq-line);
  border-bottom: var(--faq-line);
}

.page-faq .faq-toolbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 20px;
  padding-block: 14px;
}

.page-faq .faq-toolbar-label {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ash);
  margin: 0;
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-filter .filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  min-height: 44px;
  padding: 8px 16px;
  border: 2px solid rgba(243, 238, 230, .34);
  background: transparent;
  color: var(--cream);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: pointer;
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-filter .filter-chip:hover {
  border-color: var(--neon);
  color: var(--neon);
}

.page-faq .faq-filter .filter-chip.is-active {
  background: var(--neon);
  border-color: var(--neon);
  color: var(--rock);
  transform: translateY(-2px);
}

.page-faq .chip-num {
  font-family: var(--font-mono);
  font-size: 12px;
  opacity: .68;
}

/* ---------- 主体栅格 ---------- */
.page-faq .faq-main {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 64px);
  padding-block: clamp(44px, 7vw, 92px);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  border: var(--faq-line);
  background: var(--white);
  box-shadow: var(--shadow-hard);
  padding: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-index-title {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--ash);
  margin: 0 0 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--clay);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 12px;
  min-height: 44px;
  color: var(--ink);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: var(--cream);
  border-left-color: var(--red);
}

.page-faq .faq-index-no {
  font-size: 12px;
  color: var(--red);
}

.page-faq .faq-index-name {
  font-size: 15px;
  font-weight: 600;
}

.page-faq .faq-index-count {
  font-size: 12px;
  color: var(--ash);
}

.page-faq .faq-index-note {
  margin: 18px 0 0;
  padding-top: 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-index-note a {
  color: var(--red);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(48px, 8vw, 96px);
}

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

.page-faq .faq-group-head {
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: var(--faq-line);
}

.page-faq .faq-group-lede {
  max-width: 40em;
  margin: 14px 0 0;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

/* ---------- 问答说明牌 ---------- */
.page-faq .faq-item {
  border: var(--faq-line);
  background: var(--white);
  box-shadow: var(--shadow-panel);
  margin-bottom: 14px;
  transition: box-shadow .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-item[open] {
  box-shadow: var(--shadow-hard);
  background: var(--white);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  min-height: 44px;
  padding: clamp(16px, 2.2vw, 22px) clamp(16px, 2.4vw, 26px);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--ink);
}

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

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

.page-faq .faq-no {
  font-size: 13px;
  color: var(--red);
}

.page-faq .faq-plus {
  position: relative;
  width: 16px;
  height: 16px;
  flex: none;
}

.page-faq .faq-plus::before,
.page-faq .faq-plus::after {
  content: "";
  position: absolute;
  background: var(--rock);
  transition: transform .24s var(--ease), background .24s var(--ease);
}

.page-faq .faq-plus::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-plus::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-plus::before {
  background: var(--red);
}

.page-faq .faq-item[open] .faq-plus::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 clamp(16px, 2.4vw, 26px) clamp(20px, 2.6vw, 28px);
  border-top: 1px solid var(--clay);
  padding-top: 16px;
  color: var(--ink-soft);
  font-size: 16px;
  line-height: 1.8;
}

.page-faq .faq-a p {
  max-width: 40em;
  margin: 0;
}

.page-faq .faq-a p + p {
  margin-top: 12px;
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-open .28s var(--ease) both;
}

@keyframes faq-open {
  from { opacity: 0; transform: translateY(-8px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-faq .faq-more {
  margin-top: 14px !important;
}

.page-faq .faq-more a {
  display: inline-block;
  font-size: 14px;
  font-weight: 700;
  color: var(--red);
  text-decoration: none;
  border-bottom: 3px solid var(--neon);
  padding-bottom: 2px;
}

.page-faq .faq-more a:hover {
  color: var(--red-dark);
}

/* ---------- 图表说明牌 ---------- */
.page-faq .faq-figure {
  margin: 0;
  border: var(--faq-line);
  background: var(--rock);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-faq .faq-figure figcaption {
  padding: 14px clamp(16px, 2.4vw, 22px);
  background: var(--moss);
  color: var(--white);
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .02em;
}

/* ---------- 人工帮助 ---------- */
.page-faq .faq-help {
  position: relative;
  background: var(--rock);
  color: var(--cream);
  border-top: 3px solid var(--red);
  padding-block: clamp(44px, 7vw, 88px);
}

.page-faq .faq-help::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--neon) 0 24px, transparent 24px 48px);
  opacity: .5;
}

.page-faq .faq-help-inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-help .index-label {
  color: var(--neon);
}

.page-faq .faq-help .section-title {
  color: var(--cream);
}

.page-faq .faq-help-copy p {
  max-width: 36em;
  margin-top: 16px;
  color: rgba(243, 238, 230, .78);
  font-size: 16px;
  line-height: 1.8;
}

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

.page-faq .faq-help-card {
  display: grid;
  gap: 6px;
  padding: clamp(18px, 2.4vw, 24px);
  border: 3px solid rgba(243, 238, 230, .26);
  background: rgba(255, 255, 255, .04);
}

.page-faq .faq-help-k {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-help-v {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(15px, 2vw, 19px);
  color: var(--white);
  word-break: break-all;
}

.page-faq .faq-help-n {
  font-size: 13px;
  color: rgba(243, 238, 230, .66);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-main {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 76px);
  }

  .page-faq .faq-help-inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 460px);
    align-items: center;
  }

  .page-faq .faq-help-cards {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-figure {
    margin-top: 8px;
  }
}

@media (min-width: 1360px) {
  .page-faq .faq-hero-facts {
    gap: 72px;
  }
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 620px) {
  .page-faq .faq-hero {
    clip-path: polygon(0 0, 100% 0, 100% calc(100% - 26px), 0 100%);
  }

  .page-faq .faq-toolbar {
    position: static;
  }

  .page-faq .faq-filter .filter-chip {
    padding: 8px 12px;
    font-size: 13px;
  }

  .page-faq .faq-q {
    gap: 10px;
  }

  .page-faq .faq-index {
    box-shadow: 6px 6px 0 rgba(20, 23, 26, .88);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq .faq-filter .filter-chip,
  .page-faq .faq-item,
  .page-faq .faq-plus::before,
  .page-faq .faq-plus::after {
    transition: none;
  }
}
<<<END>>>