.page-faq {
  --faq-line: rgba(154, 166, 178, .18);
  --faq-line-strong: #2A3A4A;
  --faq-zone-bg: #121417;
  --faq-zone-bg-alt: rgba(14, 43, 41, .55);
  --faq-card-bg: rgba(11, 26, 43, .55);
  background: var(--ink-navy);
  color: var(--ivory);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(30px, 5vw, 76px) 0 clamp(34px, 5vw, 68px);
  background:
    radial-gradient(120% 90% at 88% 4%, rgba(53, 230, 210, .10), transparent 58%),
    radial-gradient(90% 70% at 2% 96%, rgba(255, 106, 31, .09), transparent 62%),
    var(--ink-navy);
  border-bottom: 1px solid var(--faq-line-strong);
  overflow: hidden;
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(26px, 4vw, 54px);
  align-items: center;
}

.page-faq .faq-hero__copy {
  display: grid;
  gap: 16px;
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.85rem, 4.6vw, 3.3rem);
  line-height: 1.12;
  letter-spacing: -.012em;
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
  color: rgba(244, 241, 234, .84);
}

.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 2px;
}

.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 26px;
  margin: 8px 0 0;
  padding: 14px 0 0;
  border-top: 1px solid var(--faq-line);
}

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

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-faq .faq-hero__label {
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--char-black);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
}

/* ---------- 通用小标题 ---------- */
.page-faq .faq-head {
  display: grid;
  gap: 8px;
  max-width: 62ch;
  margin-bottom: clamp(18px, 3vw, 32px);
}

.page-faq .faq-head h2 {
  margin: 0;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  line-height: 1.3;
}

.page-faq .faq-head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(244, 241, 234, .74);
}

.page-faq .coord {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--cyan);
}

/* ---------- 分区索引卡 ---------- */
.page-faq .faq-index {
  padding: clamp(32px, 5vw, 68px) 0;
  background: var(--deep-green);
  border-bottom: 1px solid var(--faq-line-strong);
}

.page-faq .faq-index__grid {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
  grid-template-columns: 1fr;
}

.page-faq .faq-card {
  display: grid;
  gap: 6px;
  padding: 16px 16px 18px;
  min-height: 132px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  background: var(--faq-card-bg);
  text-decoration: none;
  color: inherit;
  transition: border-color 200ms var(--ease), background-color 200ms var(--ease), transform 200ms var(--ease);
}

.page-faq .faq-card:hover,
.page-faq .faq-card:focus-visible {
  border-color: var(--cyan);
  background: rgba(53, 230, 210, .07);
  transform: translateY(-2px);
  outline: none;
}

.page-faq .faq-card:focus-visible {
  box-shadow: 0 0 0 2px var(--cyan);
}

.page-faq .faq-card__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--whistle);
}

.page-faq .faq-card__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.005em;
}

.page-faq .faq-card__count {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
  letter-spacing: .04em;
}

.page-faq .faq-card__sample {
  font-size: 12.5px;
  line-height: 1.62;
  color: var(--mist);
}

/* ---------- 正文双栏 ---------- */
.page-faq .faq-body {
  padding: clamp(28px, 4vw, 56px) 0 clamp(40px, 6vw, 84px);
}

.page-faq .faq-toc {
  margin-bottom: 22px;
}

.page-faq .faq-toc__title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--faq-line-strong) transparent;
}

.page-faq .faq-toc__list a {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  white-space: nowrap;
  padding: 7px 11px;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  font-size: 13px;
  color: rgba(244, 241, 234, .8);
  text-decoration: none;
  transition: color 200ms var(--ease), border-color 200ms var(--ease), background-color 200ms var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--cyan);
  border-color: var(--cyan);
  outline: none;
}

.page-faq .faq-toc__list a[aria-current] {
  color: var(--ink-navy);
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-toc__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  opacity: .8;
}

/* ---------- 分区块 ---------- */
.page-faq .faq-zones {
  min-width: 0;
}

.page-faq .faq-zone {
  padding: clamp(20px, 3.2vw, 38px) clamp(16px, 2.8vw, 36px);
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  background: var(--faq-zone-bg);
  margin-bottom: clamp(14px, 2.2vw, 24px);
  scroll-margin-top: 84px;
}

.page-faq .faq-zone--alt {
  background: var(--faq-zone-bg-alt);
}

.page-faq .faq-zone__head {
  display: grid;
  gap: 7px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-zone__head h2 {
  margin: 0;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.15rem, 2.2vw, 1.5rem);
  line-height: 1.34;
}

.page-faq .faq-zone__head p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(244, 241, 234, .7);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-item {
  border-left: 3px solid var(--faq-line-strong);
  background: rgba(11, 26, 43, .42);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

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

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background: rgba(53, 230, 210, .055);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--ivory);
}

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

.page-faq .faq-item summary::marker {
  content: "";
}

.page-faq .faq-item summary:hover {
  color: var(--cyan);
}

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

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

.page-faq .faq-item__ver {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: .06em;
  color: var(--mist);
  border: 1px solid var(--faq-line-strong);
  border-radius: 2px;
  padding: 1px 5px;
}

.page-faq .faq-item summary::after {
  content: "+";
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] summary::after {
  content: "–";
  color: var(--amber);
}

.page-faq .faq-item__a {
  padding: 0 14px 15px;
  font-size: 14.5px;
  line-height: 1.82;
  color: rgba(244, 241, 234, .8);
}

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

.page-faq .faq-item[open] > .faq-item__a {
  animation: faq-answer-in 180ms var(--ease);
}

@keyframes faq-answer-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ---------- 中部横幅 ---------- */
.page-faq .faq-banner {
  margin: clamp(14px, 2.2vw, 24px) 0;
  border: 1px solid var(--faq-line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--char-black);
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-banner figcaption {
  padding: 10px 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
  border-top: 1px solid var(--faq-line);
}

/* ---------- 联系横幅 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 16px;
  padding: clamp(22px, 3.4vw, 38px);
  border: 1px solid var(--faq-line-strong);
  border-left: 3px solid var(--whistle);
  border-radius: var(--radius);
  background:
    linear-gradient(128deg, rgba(255, 106, 31, .14), rgba(11, 26, 43, 0) 62%),
    var(--char-black);
  scroll-margin-top: 84px;
}

.page-faq .faq-contact__main {
  display: grid;
  gap: 8px;
}

.page-faq .faq-contact__main h2 {
  margin: 0;
  font-family: var(--font-editorial);
  font-weight: 600;
  font-size: clamp(1.2rem, 2.4vw, 1.6rem);
  line-height: 1.32;
}

.page-faq .faq-contact__main p {
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: rgba(244, 241, 234, .82);
}

.page-faq .faq-contact__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--mist);
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  }

  .page-faq .faq-index__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-faq .faq-contact__main {
    grid-column: 1;
  }

  .page-faq .faq-contact__acts {
    grid-column: 2;
    justify-content: flex-end;
  }

  .page-faq .faq-contact__note {
    grid-column: 1 / -1;
  }
}

@media (min-width: 1040px) {
  .page-faq .faq-body {
    display: grid;
    grid-template-columns: 176px minmax(0, 1fr);
    gap: clamp(28px, 3.4vw, 52px);
    align-items: start;
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 84px;
    margin-bottom: 0;
  }

  .page-faq .faq-toc__list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
    padding-bottom: 0;
  }

  .page-faq .faq-toc__list a {
    display: flex;
    width: 100%;
    border-color: transparent;
    border-left: 2px solid var(--faq-line-strong);
    border-radius: 0;
    padding: 7px 10px;
  }

  .page-faq .faq-toc__list a:hover,
  .page-faq .faq-toc__list a:focus-visible {
    border-left-color: var(--cyan);
    background: rgba(53, 230, 210, .07);
  }

  .page-faq .faq-toc__list a[aria-current] {
    background: rgba(53, 230, 210, .1);
    border-left-color: var(--cyan);
    color: var(--cyan);
  }

  .page-faq .faq-index__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-hero__media {
    transform: translateY(-6px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-card,
  .page-faq .faq-item,
  .page-faq .faq-toc__list a {
    transition: none;
  }

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

  .page-faq .faq-item[open] > .faq-item__a {
    animation: none;
  }

  .page-faq .faq-hero__media {
    transform: none;
  }
}
<<<END>>>