.page-faq {
  --faq-idx-w: 252px;
  --faq-cut: 12px;
  background-color: var(--bg-deep);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  padding-bottom: clamp(64px, 8vw, 120px);
}

.page-faq a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 232, 208, 0.35);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq a:hover,
.page-faq a:focus-visible {
  border-bottom-color: var(--cyan);
}

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

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumbs {
  margin: 0 0 24px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

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

.page-faq .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--text-dim);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  color: var(--line);
}

.page-faq .breadcrumbs a {
  color: var(--text-dim);
  border-bottom-color: transparent;
}

.page-faq .breadcrumbs a:hover {
  color: var(--cyan);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(28px, 5vw, 56px) 0 clamp(48px, 6vw, 76px);
  background:
    radial-gradient(880px 420px at 10% -12%, rgba(53, 232, 208, 0.13), transparent 62%),
    radial-gradient(720px 380px at 94% 6%, rgba(126, 120, 155, 0.18), transparent 66%);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 42, 61, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 42, 61, 0.42) 1px, transparent 1px);
  background-size: 64px 64px;
  -webkit-mask-image: radial-gradient(72% 62% at 48% 0%, #000 0%, transparent 76%);
  mask-image: radial-gradient(72% 62% at 48% 0%, #000 0%, transparent 76%);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 40px;
  align-items: center;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-size: clamp(34px, 6.2vw, 62px);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: 0.015em;
  color: var(--text);
}

.page-faq .faq-hero__copy .lede {
  margin-top: 20px;
  max-width: 62ch;
  font-size: clamp(15.5px, 1.3vw, 17px);
  line-height: 1.8;
  color: var(--text-dim);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding-right: 28px;
  border-right: 1px solid var(--line);
}

.page-faq .faq-hero__facts li:last-child {
  border-right: 0;
  padding-right: 0;
}

.page-faq .faq-hero__fact-num {
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-hero__fact-label {
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

.page-faq .faq-hero__art {
  margin: 0;
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero__art::before {
  content: "";
  position: absolute;
  inset: 18px -18px -18px 18px;
  border: 1px solid rgba(53, 232, 208, 0.32);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 24px), calc(100% - 24px) 100%, 0 100%);
  z-index: 0;
  pointer-events: none;
}

.page-faq .faq-hero__frame {
  position: relative;
  z-index: 1;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
}

.page-faq .media__frame {
  overflow: hidden;
  background-color: var(--bg-panel);
}

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

.page-faq .media__frame--square {
  aspect-ratio: 1 / 1;
}

.page-faq .faq-hero__frame img {
  height: 100%;
}

.page-faq .media__frame--wide {
  aspect-ratio: 1200 / 420;
}

.page-faq .faq-outro__media img {
  height: 100%;
}

.page-faq .media__caption {
  margin-top: 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 正文骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 36px;
  align-items: start;
}

.page-faq .faq-index {
  padding-top: 4px;
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--violet);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index__list a {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 14px;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.04em;
  color: var(--text-dim);
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  clip-path: polygon(10px 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%, 0 10px);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--text);
  border-color: rgba(53, 232, 208, 0.55);
  background-color: var(--bg-glass);
}

.page-faq .faq-index__num {
  color: var(--cyan);
  font-weight: 700;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 128px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 72px);
}

.page-faq .chapter {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 22px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.page-faq .chapter__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(30px, 4.2vw, 44px);
  font-weight: 700;
  line-height: 0.95;
  letter-spacing: 0.01em;
  color: var(--cyan);
}

.page-faq .chapter__head {
  min-width: 0;
  padding-top: 4px;
}

.page-faq .chapter__title {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(20px, 2.2vw, 27px);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .chapter__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa {
  margin-bottom: 10px;
  background-color: var(--bg-panel);
  border: 1px solid var(--line);
  clip-path: polygon(var(--faq-cut) 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%, 0 var(--faq-cut));
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(53, 232, 208, 0.42);
}

.page-faq .qa[open] {
  background-color: var(--bg-glass);
  border-color: rgba(53, 232, 208, 0.55);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  letter-spacing: 0.01em;
  color: var(--text);
}

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

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

.page-faq .qa__text {
  min-width: 0;
}

.page-faq .qa__icon {
  position: relative;
  flex: 0 0 auto;
  width: 22px;
  height: 22px;
  margin-top: 2px;
  border: 1px solid rgba(53, 232, 208, 0.45);
  clip-path: polygon(5px 0, 100% 0, 100% calc(100% - 5px), calc(100% - 5px) 100%, 0 100%, 0 5px);
}

.page-faq .qa__icon::before,
.page-faq .qa__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background-color: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .qa__icon::after {
  width: 1.5px;
  height: 10px;
}

.page-faq .qa[open] .qa__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 18px 20px;
  border-left: 2px solid rgba(53, 232, 208, 0.5);
  margin: 0 18px 0 18px;
  padding-left: 16px;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--text-dim);
}

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

.page-faq .qa__a p + p,
.page-faq .qa__a ol + p,
.page-faq .qa__a p + ol {
  margin-top: 10px;
}

.page-faq .qa__a .code {
  white-space: nowrap;
}

.page-faq .qa__steps {
  margin: 0;
  padding-left: 20px;
  list-style: none;
  counter-reset: step;
}

.page-faq .qa__steps li {
  position: relative;
  padding-left: 4px;
  counter-increment: step;
}

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

.page-faq .qa__steps li::before {
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: -20px;
  top: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--amber);
}

/* ---------- 末尾引导 ---------- */
.page-faq .faq-outro {
  padding: clamp(56px, 8vw, 100px) 0 0;
}

.page-faq .faq-outro__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: center;
}

.page-faq .faq-outro__copy h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--text);
}

.page-faq .faq-outro__copy p {
  margin: 14px 0 0;
  max-width: 56ch;
  color: var(--text-dim);
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-outro__actions .btn {
  border-bottom: 0;
}

.page-faq .faq-outro__media {
  margin: 0;
}

/* ---------- 响应式 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
    gap: 56px;
  }

  .page-faq .faq-outro__inner {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-idx-w) minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 128px;
  }

  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index__list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-index__list a {
    display: flex;
    width: 100%;
    padding: 10px 12px 10px 16px;
    white-space: normal;
    background-color: transparent;
    border: 0;
    border-left: 2px solid transparent;
    clip-path: none;
    margin-left: -1px;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    color: var(--text);
    background-color: rgba(19, 28, 44, 0.7);
    border-left-color: var(--cyan);
  }
}

@media (max-width: 760px) {
  .page-faq .media__frame--wide {
    aspect-ratio: 16 / 10;
  }

  .page-faq .qa__q {
    font-size: 15.5px;
    padding: 15px 15px;
  }

  .page-faq .qa__a {
    margin: 0 15px;
    padding-left: 14px;
    padding-right: 0;
    padding-bottom: 18px;
  }

  .page-faq .faq-hero__facts li {
    padding-right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__icon::before,
  .page-faq .qa__icon::after,
  .page-faq .faq-index__list a,
  .page-faq a {
    transition: none;
  }
}
<<<END>>>