.page-faq {
  --faq-index-w: 264px;
  --faq-gap: clamp(18px, 2.6vw, 34px);
  padding-bottom: clamp(56px, 8vw, 100px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(820px 380px at 88% -8%, rgba(53, 242, 196, 0.14), transparent 68%),
    radial-gradient(560px 300px at 4% 108%, rgba(255, 177, 59, 0.09), transparent 72%),
    var(--ink);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    repeating-linear-gradient(0deg, rgba(38, 54, 61, 0.6) 0, rgba(38, 54, 61, 0.6) 1px, transparent 1px, transparent 72px),
    repeating-linear-gradient(90deg, rgba(38, 54, 61, 0.4) 0, rgba(38, 54, 61, 0.4) 1px, transparent 1px, transparent 72px);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
  mask-image: linear-gradient(180deg, #000 0%, transparent 88%);
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding-block: clamp(24px, 4vw, 48px) clamp(32px, 5vw, 58px);
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero-copy .eyebrow {
  margin-top: 18px;
}

.page-faq .faq-hero-copy h1 {
  margin: 10px 0 0;
  font-size: clamp(29px, 5.2vw, 52px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--text);
}

.page-faq .faq-lead {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: clamp(15px, 1.4vw, 17px);
  line-height: 1.82;
  color: var(--text-soft);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(122px, 1fr));
  gap: 12px;
  margin: 26px 0 0;
  padding: 16px 0 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-hero-stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-hero-stat dt {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.page-faq .faq-hero-stat dd {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-stat-num {
  font-size: clamp(24px, 3vw, 30px);
  font-weight: 600;
  line-height: 1.1;
  color: var(--mint);
}

.page-faq .faq-stat-unit {
  font-size: 12px;
  color: var(--text-muted);
}

.page-faq .faq-hero-figure {
  margin: 0;
  min-width: 0;
}

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

/* ---------- 主体栅格 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
  padding-top: clamp(24px, 4vw, 46px);
}

.page-faq .faq-index {
  min-width: 0;
  padding: 16px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--panel);
  box-shadow: inset 0 1px 0 rgba(234, 247, 243, 0.03);
}

.page-faq .faq-index .toc-title {
  margin: 0 0 10px;
  padding-left: 4px;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-faq .faq-index .toc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-index .toc-list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--radius-sm);
  color: var(--text-soft);
  font-size: 15px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-index .toc-list a .mono {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.page-faq .faq-index .toc-list a:hover,
.page-faq .faq-index .toc-list a:focus-visible {
  color: var(--mint-bright);
  background: rgba(53, 242, 196, 0.07);
  border-left-color: rgba(53, 242, 196, 0.5);
}

.page-faq .faq-index .toc-list a.is-active,
.page-faq .faq-index .toc-list a[aria-current="true"] {
  color: var(--mint);
  background: rgba(53, 242, 196, 0.1);
  border-left-color: var(--mint);
}

.page-faq .faq-index .toc-list a.is-active .mono,
.page-faq .faq-index .toc-list a[aria-current="true"] .mono {
  color: var(--mint-bright);
}

.page-faq .faq-index-note {
  margin: 14px 4px 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 问答流 ---------- */
.page-faq .faq-stream {
  display: flex;
  flex-direction: column;
  gap: var(--faq-gap);
  min-width: 0;
}

.page-faq .faq-stream > .panel + .panel {
  margin-top: 0;
}

.page-faq .faq-panel {
  position: relative;
  overflow: hidden;
  min-width: 0;
}

.page-faq .faq-panel::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 2px;
  background: linear-gradient(90deg, var(--mint), transparent 46%);
  opacity: 0.5;
  pointer-events: none;
}

.page-faq .faq-panel .panel-title {
  font-size: clamp(19px, 2.2vw, 25px);
  line-height: 1.3;
}

.page-faq .faq-section-lead {
  margin: 0 0 8px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--text-muted);
}

.page-faq .faq-item {
  border-top: 1px solid var(--line);
}

.page-faq .faq-section-lead + .faq-item {
  margin-top: 14px;
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: clamp(16px, 1.6vw, 17px);
  font-weight: 600;
  line-height: 1.62;
  color: var(--text);
  transition: color 0.2s ease;
}

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

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

.page-faq .faq-item > summary::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 8px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.4;
  color: var(--mint);
}

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

.page-faq .faq-item > summary:hover {
  color: var(--mint-bright);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--mint-bright);
  outline-offset: 3px;
  border-radius: 6px;
}

.page-faq .faq-answer {
  padding: 2px 0 20px;
  font-size: 15px;
  line-height: 1.82;
  color: var(--text-soft);
}

.page-faq .faq-answer > *:first-child {
  margin-top: 0;
}

.page-faq .faq-steps {
  counter-reset: step;
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps > li {
  position: relative;
  padding-left: 44px;
  min-height: 24px;
  color: var(--text-soft);
}

.page-faq .faq-steps > li::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  padding: 1px 6px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.5;
  letter-spacing: 0.04em;
  color: var(--mint);
  background: rgba(53, 242, 196, 0.08);
  border: 1px solid rgba(53, 242, 196, 0.32);
  border-radius: 6px;
}

.page-faq .faq-inline-figure {
  margin: 18px 0 4px;
}

.page-faq .faq-answer .link-more {
  white-space: nowrap;
}

/* ---------- 联系方式与后续动作 ---------- */
.page-faq .faq-contact-block {
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-contact-block h3 {
  margin: 0 0 12px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.page-faq .faq-contact {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-contact > li {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--panel-raised);
}

.page-faq .faq-contact-label {
  flex: none;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--amber-soft);
}

.page-faq .faq-contact-value {
  flex: 1 1 190px;
  min-width: 0;
  font-size: 15px;
  color: var(--text);
  overflow-wrap: anywhere;
}

.page-faq .copy-btn {
  flex: none;
  padding: 5px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mint);
  background: transparent;
  border: 1px solid rgba(53, 242, 196, 0.4);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.page-faq .copy-btn:hover {
  color: var(--ink);
  background: var(--mint);
  border-color: var(--mint);
}

.page-faq .copy-btn:focus-visible {
  outline: 2px solid var(--mint-bright);
  outline-offset: 2px;
}

.page-faq .faq-next {
  margin-top: 22px;
  padding: 18px;
  border: 1px dashed var(--line-strong, #3E5A66);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(53, 242, 196, 0.05), transparent 70%);
}

.page-faq .faq-next-title {
  margin: 0 0 12px;
  font-size: 15px;
  font-weight: 600;
  color: var(--text);
}

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

.page-faq .faq-next-note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--text-muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero-figure {
    max-width: 640px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-faq .faq-hero-figure {
    max-width: none;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: clamp(24px, 3vw, 42px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }

  .page-faq .faq-steps {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 1180px) {
  .page-faq {
    --faq-index-w: 288px;
  }
}

@media (max-width: 460px) {
  .page-faq .faq-contact > li {
    padding: 11px 12px;
  }

  .page-faq .faq-contact-value {
    flex-basis: 100%;
    order: 2;
  }

  .page-faq .copy-btn {
    order: 3;
  }

  .page-faq .faq-next {
    padding: 14px;
  }

  .page-faq .faq-next-links .btn {
    flex: 1 1 100%;
    text-align: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item > summary,
  .page-faq .faq-index .toc-list a,
  .page-faq .copy-btn {
    transition: none;
  }
}
<<<END>>>