.page-faq {
  --faq-line: rgba(108, 124, 138, 0.32);
  --faq-glass: rgba(18, 63, 90, 0.45);
  --faq-pad: clamp(18px, 3.5vw, 44px);
  background: var(--deep);
  color: var(--ice);
  font-family: var(--font-body);
  line-height: 1.75;
}

.page-faq h1,
.page-faq h2 {
  font-family: var(--font-display);
  letter-spacing: -0.03em;
  line-height: 1.18;
  margin: 0;
}

.page-faq .mono {
  font-family: var(--font-mono);
}

.page-faq .breadcrumbs {
  padding-top: clamp(14px, 3vw, 26px);
  font-size: 0.8125rem;
  color: var(--silver);
}

.page-faq .breadcrumbs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .breadcrumbs-item + .breadcrumbs-item::before {
  content: "/";
  margin-right: 0.5rem;
  color: var(--silver);
}

.page-faq .breadcrumbs-item a {
  color: var(--silver-2);
  text-decoration: none;
}

.page-faq .breadcrumbs-item a:hover,
.page-faq .breadcrumbs-item a:focus-visible {
  color: var(--aqua);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(14px, 2.5vw, 24px);
}

.page-faq .faq-frame {
  position: relative;
  padding: var(--faq-pad);
  padding-top: clamp(30px, 4.5vw, 56px);
  border: 1px solid var(--faq-line);
  border-radius: 20px;
  background:
    radial-gradient(120% 130% at 100% 0%, rgba(31, 224, 192, 0.14), transparent 58%),
    linear-gradient(165deg, rgba(18, 63, 90, 0.72), rgba(6, 26, 43, 0.94));
  overflow: hidden;
}

.page-faq .faq-frame::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 14px;
  background-image: repeating-linear-gradient(90deg, rgba(108, 124, 138, 0.55) 0 1px, transparent 1px 22px);
  opacity: 0.7;
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
}

.page-faq .faq-hero-copy h1 {
  font-size: clamp(2rem, 6vw, 3.4rem);
  font-weight: 800;
  margin-top: 0.4rem;
  color: var(--white);
}

.page-faq .eyebrow {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: var(--aqua);
  margin: 0;
}

.page-faq .faq-hero-lead {
  max-width: 36ch;
  margin: 1rem 0 0;
  font-size: clamp(0.975rem, 1.6vw, 1.0625rem);
  color: var(--silver-2);
}

.page-faq .faq-hero-points {
  list-style: none;
  margin: clamp(16px, 2.5vw, 26px) 0 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9375rem;
  color: var(--silver-2);
}

.page-faq .faq-hero-points li {
  display: flex;
  align-items: baseline;
  gap: 0.6rem;
  flex-wrap: wrap;
}

.page-faq .faq-hero-points .mono {
  color: var(--coral);
  font-size: 0.8125rem;
  letter-spacing: 0.04em;
}

.page-faq .faq-hero-visual {
  margin: 0;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: linear-gradient(150deg, rgba(31, 224, 192, 0.16), rgba(139, 108, 255, 0.12));
}

.page-faq .faq-hero-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-faq .faq-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: clamp(20px, 3vw, 34px);
  padding-top: clamp(16px, 2.5vw, 24px);
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--silver-2);
  text-decoration: none;
  background: rgba(11, 46, 71, 0.5);
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-chip:hover,
.page-faq .faq-chip:focus-visible {
  color: var(--deep);
  background: var(--aqua);
  border-color: var(--aqua);
  outline: none;
}

/* ---------- 正文布局 ---------- */
.page-faq .faq-body {
  padding-bottom: clamp(48px, 7vw, 96px);
}

.page-faq .faq-body-grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-rail {
  align-self: start;
}

.page-faq .faq-rail-title {
  margin: 0 0 0.75rem;
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--silver);
}

.page-faq .faq-rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.25rem;
}

.page-faq .faq-rail-link {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.55rem 0.7rem;
  border-left: 2px solid transparent;
  color: var(--silver-2);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-rail-link .mono {
  font-size: 0.75rem;
  color: var(--aqua);
}

.page-faq .faq-rail-link:hover,
.page-faq .faq-rail-link:focus-visible {
  color: var(--white);
  border-left-color: var(--aqua);
  background: rgba(31, 224, 192, 0.08);
  outline: none;
}

.page-faq .faq-rail-note {
  margin-top: 1.25rem;
  padding: 1rem;
  border: 1px solid var(--faq-line);
  border-radius: 14px;
  background: var(--faq-glass);
}

.page-faq .faq-rail-note p {
  margin: 0 0 0.75rem;
  font-size: 0.875rem;
  color: var(--silver-2);
}

/* ---------- 问答区块 ---------- */
.page-faq .faq-block {
  margin-bottom: clamp(36px, 5vw, 64px);
  scroll-margin-top: calc(var(--strip-h) + 24px);
}

.page-faq .faq-block:last-child {
  margin-bottom: 0;
}

.page-faq .faq-block-head {
  position: relative;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--faq-line);
  margin-bottom: 0.5rem;
}

.page-faq .faq-block-num {
  display: block;
  font-size: 0.8125rem;
  letter-spacing: 0.16em;
  color: var(--aqua);
  margin-bottom: 0.4rem;
}

.page-faq .faq-block-title {
  font-size: clamp(1.4rem, 3.4vw, 2rem);
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-block-desc {
  margin: 0.6rem 0 0;
  max-width: 38ch;
  font-size: 0.9375rem;
  color: var(--silver);
}

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

.page-faq .qa summary {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 1rem 0;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--aqua);
  transition: transform 180ms var(--ease);
}

.page-faq .qa[open] summary::after {
  content: "−";
}

.page-faq .qa-num {
  flex: none;
  font-size: 0.75rem;
  color: var(--silver);
}

.page-faq .qa-title {
  flex: 1;
  min-width: 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--silver-2);
  transition: color 180ms var(--ease);
}

.page-faq .qa[open] .qa-title,
.page-faq .qa summary:hover .qa-title,
.page-faq .qa summary:focus-visible .qa-title {
  color: var(--white);
}

.page-faq .qa summary:focus-visible {
  outline: 1px solid var(--aqua);
  outline-offset: 2px;
}

.page-faq .qa-tag {
  flex: none;
  padding: 2px 8px;
  border: 1px solid rgba(31, 224, 192, 0.45);
  border-radius: 999px;
  font-size: 0.6875rem;
  color: var(--aqua);
  white-space: nowrap;
}

.page-faq .qa-body {
  padding: 0 0 1.25rem 1.6rem;
}

.page-faq .qa-body p {
  margin: 0 0 0.75rem;
  max-width: 38ch;
  font-size: 0.9375rem;
  color: var(--silver-2);
}

.page-faq .qa-body p:last-child {
  margin-bottom: 0;
}

.page-faq .qa-steps {
  list-style: none;
  counter-reset: step;
  margin: 0 0 0.75rem;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.page-faq .qa-steps li {
  counter-increment: step;
  position: relative;
  padding-left: 2.1rem;
  font-size: 0.9375rem;
  color: var(--silver-2);
}

.page-faq .qa-steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--aqua);
  border: 1px solid rgba(31, 224, 192, 0.4);
  border-radius: 6px;
  padding: 0 0.3rem;
}

.page-faq .qa-taglist {
  list-style: none;
  margin: 0 0 0.75rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.page-faq .qa-taglist li {
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  background: rgba(220, 231, 238, 0.1);
  border: 1px solid var(--faq-line);
  font-size: 0.8125rem;
  color: var(--silver-2);
}

/* ---------- 场景提示 ---------- */
.page-faq .faq-scene {
  display: grid;
  gap: 1rem;
  margin-top: 1.25rem;
  padding: 1.1rem 1.2rem;
  border-left: 3px solid var(--coral);
  border-radius: 0 14px 14px 0;
  background: linear-gradient(100deg, rgba(255, 107, 74, 0.14), rgba(18, 63, 90, 0.35));
}

.page-faq .faq-scene-copy p,
.page-faq .faq-scene-quiet p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--silver-2);
  max-width: 42ch;
}

.page-faq .faq-scene-label {
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  color: var(--coral);
  margin-bottom: 0.35rem;
}

.page-faq .faq-scene-visual {
  margin: 0;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--faq-line);
}

.page-faq .faq-scene-visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  aspect-ratio: 4 / 3;
}

.page-faq .faq-scene-quiet {
  border-left-color: var(--aqua);
  background: linear-gradient(100deg, rgba(31, 224, 192, 0.1), rgba(18, 63, 90, 0.3));
}

.page-faq .faq-scene-quiet .faq-scene-label {
  color: var(--aqua);
}

/* ---------- 联系支持 ---------- */
.page-faq .support-card {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.25rem;
  padding: clamp(18px, 3vw, 32px);
  border: 1px solid var(--faq-line);
  border-radius: 18px;
  background:
    radial-gradient(110% 120% at 0% 0%, rgba(31, 224, 192, 0.12), transparent 60%),
    linear-gradient(160deg, rgba(18, 63, 90, 0.8), rgba(6, 26, 43, 0.9));
}

.page-faq .support-lines p {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px dashed rgba(108, 124, 138, 0.28);
  font-size: 0.9375rem;
}

.page-faq .support-k {
  flex: none;
  min-width: 4.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--silver);
}

.page-faq .support-v {
  flex: 1 1 14rem;
  color: var(--ice);
  word-break: break-word;
}

.page-faq .support-lines .support-hint {
  border-bottom: 0;
  padding-bottom: 0;
  margin-bottom: 0;
  font-size: 0.8125rem;
  color: var(--silver);
}

.page-faq .support-actions {
  display: grid;
  gap: 0.6rem;
  align-content: start;
}

.page-faq .support-actions .btn {
  text-align: center;
  text-decoration: none;
}

.page-faq .support-actions .btn-primary {
  background: var(--coral);
  border-color: var(--coral);
  color: var(--deep);
  font-weight: 700;
}

.page-faq .support-actions .btn-primary:hover,
.page-faq .support-actions .btn-primary:focus-visible {
  background: var(--white);
  border-color: var(--white);
  color: var(--deep);
}

.page-faq .support-actions .btn-ghost {
  border: 1px solid var(--faq-line);
  color: var(--silver-2);
  background: transparent;
}

.page-faq .support-actions .btn-ghost:hover,
.page-faq .support-actions .btn-ghost:focus-visible {
  border-color: var(--aqua);
  color: var(--aqua);
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-scene {
    grid-template-columns: 1fr 1fr;
    align-items: center;
  }

  .page-faq .support-card {
    grid-template-columns: 1.4fr 1fr;
    align-items: start;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body-grid {
    grid-template-columns: 250px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 60px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--strip-h) + 24px);
  }

  .page-faq .qa-title {
    font-size: 1.0625rem;
  }
}
<<<END>>>