.page-faq {
  --faq-gap: clamp(22px, 3.2vw, 40px);
  --faq-pad-x: clamp(14px, 2.2vw, 22px);
  color: var(--paper);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  padding-top: clamp(20px, 3vw, 32px);
  font-size: 12.5px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(130% 100% at 84% -10%, rgba(75, 58, 122, 0.42), transparent 58%),
    radial-gradient(96% 90% at 2% 112%, rgba(31, 74, 68, 0.34), transparent 60%),
    linear-gradient(180deg, var(--ink-800) 0%, var(--ink-900) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, var(--line-soft) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line-soft) 1px, transparent 1px);
  background-size: 68px 68px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.55), transparent 78%);
  opacity: 0.5;
}

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

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3.6vw, 44px);
  padding: clamp(20px, 3vw, 36px) 0 clamp(30px, 4.8vw, 60px);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 6.4vw, 58px);
  font-weight: 900;
  line-height: 1.08;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  background: linear-gradient(96deg, var(--gold-hi) 0%, var(--gold) 62%, var(--sand) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-faq .faq-hero h1 em {
    color: var(--gold-hi);
  }
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 34em;
  font-size: clamp(15.5px, 1.8vw, 17px);
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-hero__jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 24px;
}

/* ---------- 首屏数据 ---------- */
.page-faq .faq-facts {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card-bg);
  box-shadow: inset 0 1px 0 rgba(242, 217, 140, 0.08);
}

.page-faq .faq-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 13px clamp(14px, 2vw, 20px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-facts__row:first-child {
  border-top: 0;
}

.page-faq .faq-facts dt {
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-facts dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 18px;
  letter-spacing: 0.04em;
  color: var(--gold-hi);
  white-space: nowrap;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding: clamp(30px, 4.5vw, 60px) 0 clamp(40px, 6vw, 80px);
}

/* ---------- 左侧分类轴 ---------- */
.page-faq .faq-rail {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(21, 26, 36, 0.92), rgba(14, 17, 24, 0.92));
  padding: 15px 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  white-space: nowrap;
  border: 1px solid transparent;
  border-radius: var(--r);
  font-size: 13.5px;
  color: var(--paper);
  text-decoration: none;
  transition: background 0.18s ease, border-color 0.18s ease, color 0.18s ease;
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-rail__foot {
  margin-top: 14px;
}

/* ---------- 章节 ---------- */
.page-faq .faq-chapter {
  scroll-margin-top: calc(var(--header-h) + 30px);
}

.page-faq .faq-chapter + .faq-chapter {
  margin-top: clamp(34px, 5vw, 58px);
}

.page-faq .faq-chapter__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px 16px;
  align-items: start;
}

.page-faq .faq-chapter__num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 3.2vw, 28px);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: 0.02em;
  background: linear-gradient(180deg, var(--gold-hi), var(--gold));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
  .page-faq .faq-chapter__num {
    color: var(--gold);
  }
}

.page-faq .faq-chapter__head h2 {
  margin: 0;
  font-size: clamp(20px, 3.6vw, 30px);
  font-weight: 800;
  line-height: 1.35;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-chapter__lead {
  margin: 8px 0 0;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-chapter .band {
  margin: 16px 0 18px;
  border-radius: 1px;
}

/* ---------- 手风琴条目 ---------- */
.page-faq .faq-item {
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--card-bg);
  box-shadow: inset 0 1px 0 rgba(242, 217, 140, 0.06);
  scroll-margin-top: calc(var(--header-h) + 24px);
  transition: border-color 0.18s ease, box-shadow 0.18s ease;
}

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

.page-faq .faq-item[open] {
  border-color: rgba(201, 162, 39, 0.6);
  box-shadow: inset 0 1px 0 rgba(242, 217, 140, 0.12), 0 0 0 1px rgba(201, 162, 39, 0.1);
}

@media (hover: hover) {
  .page-faq .faq-item {
    transition: border-color 0.18s ease, box-shadow 0.18s ease, transform 0.18s ease;
  }
  .page-faq .faq-item:hover {
    border-color: rgba(201, 162, 39, 0.45);
    transform: translateY(-2px);
  }
}

.page-faq .faq-item__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: clamp(14px, 2vw, 18px) var(--faq-pad-x);
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 2vw, 16.5px);
  font-weight: 600;
  line-height: 1.6;
  color: var(--paper);
}

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

.page-faq .faq-item__summary::marker {
  content: "";
}

.page-faq .faq-item__summary:focus-visible {
  outline: 2px solid var(--gold-hi);
  outline-offset: -2px;
  border-radius: var(--r);
}

.page-faq .faq-item__idx {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--sand);
}

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

.page-faq .faq-item__chev {
  flex: none;
  width: 11px;
  height: 11px;
  margin-top: 7px;
  border-right: 1.5px solid var(--gold);
  border-bottom: 1.5px solid var(--gold);
  transform: rotate(45deg);
  transition: transform 0.28s ease, border-color 0.18s ease;
}

.page-faq .faq-item[open] .faq-item__chev {
  transform: rotate(-135deg);
  border-color: var(--gold-hi);
}

.page-faq .faq-item__body {
  padding: 16px var(--faq-pad-x) clamp(16px, 2.2vw, 22px);
  border-top: 1px solid var(--line-soft);
}

@keyframes faqBodyIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.page-faq .faq-item[open] > .faq-item__body {
  animation: faqBodyIn 0.3s ease both;
}

/* ---------- 步骤条 ---------- */
.page-faq .faq-steps {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 12px 0;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-steps__item:first-child {
  padding-top: 4px;
  border-top: 0;
}

.page-faq .faq-steps__num {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .faq-steps__text strong {
  margin-right: 0.35em;
  font-weight: 700;
  color: var(--gold-hi);
}

.page-faq .faq-kw {
  font-style: normal;
  padding-bottom: 1px;
  border-bottom: 1px solid rgba(201, 123, 63, 0.55);
  color: var(--sand);
}

/* ---------- 要点列表 ---------- */
.page-faq .faq-bullets {
  margin: 6px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-bullets li {
  position: relative;
  padding-left: 17px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .faq-bullets li + li {
  margin-top: 9px;
}

.page-faq .faq-bullets li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--gold);
  transform: rotate(45deg);
}

.page-faq .faq-bullets strong {
  margin-right: 0.4em;
  font-weight: 700;
  color: var(--gold-hi);
}

.page-faq .faq-bullets a,
.page-faq .faq-note a {
  color: var(--gold-hi);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-bullets a:hover,
.page-faq .faq-note a:hover {
  border-bottom-color: var(--gold-hi);
}

/* ---------- 小标题与标注条 ---------- */
.page-faq .faq-subhead {
  margin: 18px 0 6px;
  font-size: 12.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-note {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.8;
}

.page-faq .faq-note__key {
  display: inline-block;
  margin-right: 8px;
  padding: 1px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold-hi);
  border: 1px solid rgba(242, 217, 140, 0.35);
  border-radius: 2px;
  white-space: nowrap;
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 0;
}

.page-faq .faq-figure .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: var(--ink-700);
}

.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: 8px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 复制芯片 ---------- */
.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 8px;
}

.page-faq .faq-chips .copy-chip {
  cursor: pointer;
  text-align: left;
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-index__group {
  padding: 14px 16px 16px;
  border: 1px solid var(--line);
  border-top: 3px solid var(--gold);
  border-radius: var(--r);
  background: linear-gradient(180deg, rgba(21, 26, 36, 0.92), rgba(14, 17, 24, 0.92));
}

.page-faq .faq-index__group:nth-child(4n + 1) {
  border-top-color: var(--violet);
}

.page-faq .faq-index__group:nth-child(4n + 2) {
  border-top-color: var(--teal);
}

.page-faq .faq-index__group:nth-child(4n + 3) {
  border-top-color: var(--sand);
}

.page-faq .faq-index__group:nth-child(4n + 4) {
  border-top-color: var(--wine);
}

.page-faq .faq-index__cat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin: 0 0 10px;
  font-size: 14px;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-index__cat span {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

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

.page-faq .faq-index__list li + li {
  margin-top: 7px;
}

.page-faq .faq-index__list a {
  display: flex;
  gap: 8px;
  padding: 2px 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.18s ease, border-color 0.18s ease;
}

.page-faq .faq-index__list a::before {
  content: "›";
  flex: none;
  color: var(--gold);
}

@media (hover: hover) {
  .page-faq .faq-index__list a:hover {
    color: var(--gold-hi);
    border-bottom-color: var(--line);
  }
}

/* ---------- 断点 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 0.95fr);
    align-items: end;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 240px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: var(--rail-top);
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    white-space: normal;
    line-height: 1.5;
    padding: 9px 11px;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link[data-active="true"] {
    background: rgba(201, 162, 39, 0.12);
    border-color: var(--line);
    color: var(--gold-hi);
  }

  .page-faq .faq-rail__link[data-active="true"] .faq-rail__num {
    color: var(--gold-hi);
  }
}

@media (min-width: 1120px) {
  .page-faq .faq-index {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item__chev,
  .page-faq .faq-rail__link,
  .page-faq .faq-index__list a {
    transition: none;
  }

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

  .page-faq .faq-item[open] > .faq-item__body {
    animation: none;
  }
}
<<<END>>>