.page-faq {
  --faq-lift: 2px;
  background: var(--field);
  color: var(--paper);
  padding-bottom: clamp(48px, 7vw, 88px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 3vw, 26px) 0 clamp(34px, 5vw, 54px);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 42, 35, .95) 0%, rgba(8, 23, 19, 1) 84%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(116deg, transparent 0 25px, rgba(217, 169, 63, .07) 25px 26px),
    radial-gradient(110% 80% at 88% 4%, rgba(47, 227, 198, .14), transparent 62%);
}

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

.page-faq .faq-hero__grid {
  margin-top: clamp(18px, 3vw, 28px);
  display: grid;
  gap: clamp(24px, 4vw, 40px);
  align-items: end;
}

.page-faq .faq-hero h1 {
  margin: 10px 0 14px;
  font-family: var(--font-title);
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -.005em;
  color: var(--paper);
  text-wrap: balance;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  color: var(--mist);
}

.page-faq .faq-hero__facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
}

.page-faq .faq-hero__facts .mono {
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--gold-soft);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-hero__visual .img-frame {
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  background: var(--panel);
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-shell {
  padding-top: clamp(30px, 5vw, 52px);
  display: grid;
  gap: clamp(26px, 4vw, 44px);
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  position: relative;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: inset 0 3px 0 var(--gold);
  padding: 22px 18px 18px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--gold);
}

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

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 0 11px 4px;
  border-bottom: 1px dashed var(--line);
  color: var(--mist);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--cyan);
  padding-left: 10px;
}

.page-faq .faq-index__list .mono {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist-dim);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: calc(var(--masthead-h) + 20px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 6vw, 60px);
  padding-top: clamp(28px, 4vw, 40px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  margin-bottom: 18px;
}

.page-faq .faq-group__num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .16em;
  color: var(--orange);
  padding-bottom: 6px;
  border-bottom: 2px solid var(--gold);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group__head h2 {
  margin: 12px 0 8px;
  font-family: var(--font-title);
  font-size: clamp(23px, 3.4vw, 31px);
  font-weight: 800;
  line-height: 1.2;
  color: var(--paper);
}

.page-faq .faq-group__head p {
  margin: 0;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .faq-group__head p a,
.page-faq .faq-item__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 198, .38);
}

.page-faq .faq-group__head p a:hover,
.page-faq .faq-item__body a:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

.page-faq .faq-group__media {
  margin: 0 0 16px;
  aspect-ratio: 3 / 2;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .img-frame {
  position: relative;
  overflow: hidden;
  max-width: 100%;
}

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

/* ---------- 问答折叠 ---------- */
.page-faq .faq-item {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: inset 2px 0 0 var(--line);
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-item + .faq-item {
  margin-top: 10px;
}

.page-faq .faq-item:hover {
  border-color: var(--teal);
}

.page-faq .faq-item[open] {
  border-color: rgba(47, 227, 198, .42);
  box-shadow: inset 3px 0 0 var(--cyan);
}

.page-faq .faq-item summary {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-title);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item summary::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.2;
  color: var(--gold);
  transition: color var(--dur) var(--ease);
}

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

.page-faq a:focus-visible,
.page-faq summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-item__body > * + * {
  margin-top: 10px;
}

/* ---------- 步骤编号 ---------- */
.page-faq .faq-steps {
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
  display: grid;
  gap: 8px;
}

.page-faq .faq-steps > li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-steps > li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--gold);
  text-align: right;
  font-variant-numeric: tabular-nums;
}

/* ---------- 底部联系 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(44px, 7vw, 72px);
  padding: clamp(34px, 5vw, 56px) 0;
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(16, 42, 35, .88), rgba(8, 23, 19, 1));
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: clamp(24px, 4vw, 40px);
}

.page-faq .faq-contact h2 {
  margin: 8px 0 12px;
  font-family: var(--font-title);
  font-size: clamp(24px, 3.6vw, 34px);
  font-weight: 800;
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-contact__copy p {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-contact__meta {
  margin-top: 18px;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--mist-dim);
}

.page-faq .faq-contact__meta a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 198, .35);
}

.page-faq .faq-contact__meta a:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-soft);
}

.page-faq .faq-contact__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 14px;
}

.page-faq .faq-contact__list li {
  display: grid;
  gap: 4px;
  padding-left: 14px;
  border-left: 2px solid var(--gold);
}

.page-faq .faq-contact__label {
  font-size: 12.5px;
  letter-spacing: .12em;
  color: var(--mist-dim);
}

.page-faq .faq-contact__value {
  font-family: var(--font-mono);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--gold-soft);
  overflow-wrap: anywhere;
  font-variant-numeric: tabular-nums;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__facts {
    gap: 10px 34px;
  }

  .page-faq .faq-item summary {
    font-size: 18px;
    padding: 16px 20px;
  }

  .page-faq .faq-item__body {
    padding: 0 20px 20px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }

  .page-faq .faq-contact__inner {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 264px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--masthead-h) + 18px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__list a,
  .page-faq .faq-item,
  .page-faq .faq-item summary,
  .page-faq .faq-item summary::after {
    transition-duration: .01ms;
  }
}
<<<END>>>