.page-faq {
  --faq-rail: 150px;
  --faq-glass: rgba(13, 20, 36, .58);
  --faq-glass-strong: rgba(13, 20, 36, .9);
  position: relative;
  overflow-x: clip;
  color: var(--c-white);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-top: clamp(18px, 3vw, 34px);
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: .82rem;
}

.page-faq .breadcrumb__list li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--c-rock);
  opacity: .6;
}

.page-faq .breadcrumb__link {
  color: var(--c-rock);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .breadcrumb__link:hover,
.page-faq .breadcrumb__link:focus-visible {
  color: var(--c-cyan);
}

.page-faq .breadcrumb__current {
  color: rgba(245, 248, 255, .72);
  font-family: var(--font-display);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(30px, 4.6vw, 62px) clamp(34px, 5vw, 70px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.4vw, 46px);
  align-items: center;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 16px;
  font-family: var(--font-data);
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--c-cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 clamp(14px, 2vw, 22px);
  font-family: var(--font-display);
  font-size: clamp(1.85rem, 5vw, 3.3rem);
  font-weight: 700;
  line-height: 1.14;
  letter-spacing: -.025em;
  color: var(--c-white);
}

.page-faq .faq-hero__lede {
  max-width: 58ch;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  font-size: clamp(1rem, 1.4vw, 1.06rem);
  line-height: 1.85;
  color: rgba(245, 248, 255, .78);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border-radius: var(--r-lg);
  border: 1px solid var(--line-violet);
  overflow: hidden;
  box-shadow: 0 44px 100px -66px rgba(124, 92, 255, .95);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(200deg, rgba(124, 92, 255, .22), transparent 58%),
    linear-gradient(20deg, rgba(5, 7, 15, .6), transparent 62%);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.85) contrast(1.06) brightness(.84);
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  margin-top: clamp(8px, 1.6vw, 18px);
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-index__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 16px 18px;
  background: var(--c-deep);
  color: var(--c-rock);
  text-decoration: none;
  font-size: .88rem;
  line-height: 1.4;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-white);
  background: rgba(124, 92, 255, .14);
}

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: .72rem;
  color: var(--c-clay);
  letter-spacing: .06em;
}

/* ---------- 问答章节 ---------- */
.page-faq .faq-block {
  position: relative;
  padding-block: clamp(42px, 6vw, 88px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-block::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: clamp(80px, 14vw, 170px);
  height: 1px;
  background: linear-gradient(90deg, var(--c-violet), rgba(124, 92, 255, 0));
  transform: rotate(-12deg);
  transform-origin: left center;
}

.page-faq .faq-block__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(18px, 2.4vw, 30px);
  align-items: start;
}

.page-faq .faq-rail__num {
  display: block;
  font-family: var(--font-data);
  font-size: clamp(2.4rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: .92;
  letter-spacing: -.03em;
  color: var(--c-clay);
}

.page-faq .faq-rail__label {
  display: block;
  margin-top: 10px;
  font-size: .74rem;
  letter-spacing: .2em;
  color: var(--c-rock);
}

.page-faq .faq-body__title {
  margin: 0 0 .62em;
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 3vw, 2.15rem);
  font-weight: 700;
  line-height: 1.26;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-body__lede {
  max-width: 62ch;
  margin: 0 0 clamp(20px, 2.6vw, 32px);
  font-size: .98rem;
  line-height: 1.82;
  color: rgba(245, 248, 255, .72);
}

/* ---------- 口径示意图与对照表 ---------- */
.page-faq .faq-scope__figure {
  margin: 0 0 clamp(18px, 2.4vw, 28px);
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-scope__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.82) contrast(1.04) brightness(.86);
}

.page-faq .faq-table-wrap {
  margin-block: clamp(16px, 2.2vw, 26px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-glass);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: .9rem;
}

.page-faq .faq-table th,
.page-faq .faq-table td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-table thead th {
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .16em;
  color: var(--c-rock);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  line-height: 1.7;
  color: rgba(245, 248, 255, .8);
}

.page-faq .faq-table tbody td:first-child {
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--c-white);
  white-space: nowrap;
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-group {
  display: grid;
  gap: 10px;
}

.page-faq .qa {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-glass);
  transition:
    border-color var(--t-fast) var(--ease),
    background-color var(--t-fast) var(--ease),
    box-shadow var(--t-fast) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(56, 225, 225, .4);
}

.page-faq .qa[open] {
  border-color: var(--line-violet);
  background: var(--faq-glass-strong);
  box-shadow: 0 22px 52px -38px rgba(124, 92, 255, .95);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: clamp(15px, 1.8vw, 20px) clamp(16px, 2vw, 24px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: clamp(.97rem, 1.5vw, 1.06rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--c-white);
  transition: color var(--t-fast) var(--ease);
}

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

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

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

.page-faq .qa__idx {
  flex: none;
  min-width: 2.2em;
  padding-top: .38em;
  font-family: var(--font-data);
  font-size: .76rem;
  font-weight: 400;
  letter-spacing: .04em;
  color: var(--c-clay);
}

.page-faq .qa__mark {
  flex: none;
  width: 9px;
  height: 9px;
  margin-left: auto;
  margin-top: .5em;
  border-right: 2px solid var(--c-cyan);
  border-bottom: 2px solid var(--c-cyan);
  transform: rotate(45deg);
  transition: transform var(--t-base) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(-135deg);
  border-color: var(--c-violet);
}

.page-faq .qa__a {
  margin: 0 clamp(16px, 2vw, 24px) clamp(16px, 2vw, 22px) clamp(16px, 2vw, 24px);
  padding-top: 14px;
  border-top: 1px solid var(--line-soft);
  font-size: .94rem;
  line-height: 1.85;
  color: rgba(245, 248, 255, .82);
  animation: faq-answer-in var(--t-base) var(--ease);
}

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

.page-faq .qa__a a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(56, 225, 225, .45);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .qa__a a:hover,
.page-faq .qa__a a:focus-visible {
  color: var(--c-amber-2);
  border-bottom-color: rgba(255, 217, 138, .7);
}

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

/* ---------- 咨询引导 ---------- */
.page-faq .faq-cta {
  padding-block: clamp(40px, 5.6vw, 84px);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-cta__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 2.6vw, 34px);
  align-items: center;
  padding: clamp(24px, 3.4vw, 44px);
  border: 1px solid var(--line-violet);
  border-radius: var(--r-lg);
  background:
    radial-gradient(120% 140% at 12% 0%, rgba(124, 92, 255, .22), transparent 58%),
    radial-gradient(90% 120% at 96% 100%, rgba(56, 225, 225, .14), transparent 60%),
    var(--faq-glass-strong);
}

.page-faq .faq-cta__title {
  margin: 0 0 .5em;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.02em;
  color: var(--c-white);
}

.page-faq .faq-cta__lede {
  max-width: 58ch;
  margin: 0;
  font-size: .96rem;
  line-height: 1.82;
  color: rgba(245, 248, 255, .76);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

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

  .page-faq .faq-cta__actions {
    flex-wrap: nowrap;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: clamp(34px, 4vw, 64px);
  }

  .page-faq .faq-block__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    column-gap: clamp(28px, 4vw, 64px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 118px;
  }

  .page-faq .qa__q {
    gap: 18px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-index__list {
    grid-template-columns: repeat(5, 1fr);
  }

  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}
<<<END>>>