.page-faq {
  --faq-rail: 252px;
  --faq-gap: clamp(1.75rem, 3.5vw, 3.25rem);
  --faq-panel-bg: rgba(17, 26, 51, 0.72);
  position: relative;
  isolation: isolate;
}

.page-faq::before {
  content: "";
  position: absolute;
  inset: 0 0 auto;
  height: 780px;
  z-index: -1;
  pointer-events: none;
  background:
    radial-gradient(58% 100% at 80% 0%, rgba(139, 92, 246, 0.22), transparent 68%),
    radial-gradient(44% 76% at 8% 6%, rgba(94, 234, 212, 0.09), transparent 72%);
}

/* ---------- hero ---------- */
.page-faq .faq-hero {
  padding: clamp(1.75rem, 4vw, 3.5rem) 0 clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3rem);
}

.page-faq .faq-hero__title {
  margin: 0.9rem 0 0;
  font-family: var(--font-display);
  font-size: clamp(2.35rem, 6.2vw, 4.4rem);
  font-weight: 800;
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--silver);
}

.page-faq .faq-hero__accent {
  background: linear-gradient(100deg, var(--violet-soft), var(--violet) 52%, var(--mint));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.page-faq .faq-hero__lede {
  margin: 1.25rem 0 0;
  max-width: 46ch;
  font-size: clamp(1rem, 1.6vw, 1.1rem);
  line-height: 1.85;
  color: rgba(230, 236, 247, 0.84);
}

.page-faq .faq-hero__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
}

/* ---------- 三条入口舱 ---------- */
.page-faq .faq-paths {
  display: grid;
  gap: 0.7rem;
  padding: clamp(1rem, 2.4vw, 1.4rem);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(158deg, rgba(17, 26, 51, 0.94), rgba(14, 22, 48, 0.82));
  box-shadow: 0 34px 70px -46px rgba(0, 0, 0, 0.95);
}

.page-faq .faq-paths__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0 0.25rem 0.35rem;
}

.page-faq .faq-paths__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-path {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.9rem;
  padding: 0.9rem 1rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  background: rgba(7, 11, 26, 0.55);
  text-decoration: none;
  color: inherit;
  transition: border-color 0.22s ease, background 0.22s ease, transform 0.22s ease;
}

.page-faq .faq-path:hover,
.page-faq .faq-path:focus-visible {
  border-color: rgba(139, 92, 246, 0.6);
  background: rgba(139, 92, 246, 0.11);
  transform: translateX(3px);
}

.page-faq .faq-path__num {
  font-size: 0.8125rem;
  color: var(--violet-soft);
}

.page-faq .faq-path__body {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  min-width: 0;
}

.page-faq .faq-path__title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .faq-path__desc {
  font-size: 0.875rem;
  line-height: 1.6;
  color: rgba(230, 236, 247, 0.72);
}

.page-faq .faq-path__go {
  font-size: 1.05rem;
  color: var(--violet-soft);
  transition: transform 0.22s ease;
}

.page-faq .faq-path:hover .faq-path__go {
  transform: translateX(4px);
}

/* ---------- 双栏工作区 ---------- */
.page-faq .faq-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  padding-bottom: clamp(2rem, 5vw, 4rem);
}

.page-faq .faq-rail__title {
  margin: 0 0 0.75rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.2rem;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 0.8rem;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  font-size: 0.9375rem;
  color: rgba(230, 236, 247, 0.78);
  text-decoration: none;
  transition: color 0.2s ease, background 0.2s ease, border-color 0.2s ease;
}

.page-faq .faq-rail__link .data-mono {
  font-size: 0.75rem;
  color: var(--violet-soft);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--silver);
  background: rgba(139, 92, 246, 0.13);
  border-left-color: var(--violet);
}

.page-faq .faq-rail__note {
  margin-top: 1.4rem;
  padding: 1.1rem;
  border: 1px dashed var(--line);
  border-radius: var(--radius-md);
  background: rgba(17, 26, 51, 0.6);
}

.page-faq .faq-rail__note-title {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.6;
  color: rgba(230, 236, 247, 0.72);
}

.page-faq .faq-rail__stat {
  margin: 0.35rem 0 0.2rem;
  font-size: 2.1rem;
  font-weight: 700;
  line-height: 1.1;
  color: var(--mint);
}

.page-faq .faq-rail__sub {
  margin: 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(230, 236, 247, 0.62);
}

/* ---------- 文档清单 ---------- */
.page-faq .faq-docset__figure {
  margin: 0 0 1.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--nebula);
}

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

.page-faq .faq-group {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(152deg, rgba(17, 26, 51, 0.94), rgba(14, 22, 48, 0.78));
  overflow: hidden;
  transition: border-color 0.22s ease;
}

.page-faq .faq-group + .faq-group {
  margin-top: 0.85rem;
}

.page-faq .faq-group:hover {
  border-color: rgba(139, 92, 246, 0.45);
}

.page-faq .faq-group__heading {
  margin: 0;
  font-size: 1rem;
}

.page-faq .faq-group__trigger {
  display: flex;
  align-items: center;
  gap: 1rem;
  width: 100%;
  text-align: left;
}

.page-faq .faq-group__label {
  font-family: var(--font-display);
  font-size: clamp(1.1rem, 2.2vw, 1.3rem);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--silver);
}

.page-faq .faq-group__count {
  margin-left: auto;
  padding: 0.2rem 0.7rem;
  border: 1px solid rgba(94, 234, 212, 0.35);
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  color: var(--mint);
  white-space: nowrap;
}

.page-faq .faq-group__panel {
  padding: 0.15rem 1rem 1.15rem;
  border-top: 1px solid rgba(37, 50, 77, 0.75);
}

.page-faq .faq-kinds {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.7rem;
  padding-top: 1rem;
}

.page-faq .faq-kind {
  padding: 0.85rem 0.95rem;
  border: 1px solid rgba(37, 50, 77, 0.7);
  border-radius: var(--radius-md);
  background: rgba(7, 11, 26, 0.5);
}

.page-faq .faq-kind__name {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-kind__list {
  margin: 0.55rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.35rem;
}

.page-faq .faq-kind__list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: rgba(230, 236, 247, 0.84);
}

.page-faq .faq-kind__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.7em;
  width: 7px;
  height: 1px;
  background: var(--mint);
  opacity: 0.75;
}

.page-faq .faq-docs__foot {
  margin: 1.1rem 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(230, 236, 247, 0.66);
}

.page-faq .faq-docs__foot a,
.page-faq .faq-rhythm__text a,
.page-faq .faq-support__more a,
.page-faq .faq-qa__panel a {
  color: var(--violet-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(183, 164, 255, 0.45);
}

.page-faq .faq-docs__foot a:hover,
.page-faq .faq-rhythm__text a:hover,
.page-faq .faq-support__more a:hover,
.page-faq .faq-qa__panel a:hover {
  color: var(--mint);
}

/* ---------- 高频问题 ---------- */
.page-faq .faq-questions {
  margin-top: clamp(2.25rem, 4.5vw, 3.25rem);
}

.page-faq .faq-qa {
  position: relative;
  display: grid;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.page-faq .faq-qa__item {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 22, 48, 0.72);
  overflow: hidden;
  transition: border-color 0.22s ease, background 0.22s ease;
}

.page-faq .faq-qa__item:hover {
  border-color: rgba(139, 92, 246, 0.5);
  background: rgba(17, 26, 51, 0.86);
}

.page-faq .faq-qa__heading {
  margin: 0;
  font-size: 1rem;
}

.page-faq .faq-qa__trigger {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  width: 100%;
  text-align: left;
}

.page-faq .faq-qa__q {
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  color: var(--silver);
}

.page-faq .faq-qa__panel {
  padding: 0.1rem 1.1rem 1.1rem;
}

.page-faq .faq-qa__panel p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: rgba(230, 236, 247, 0.82);
}

/* ---------- 五步路径 ---------- */
.page-faq .faq-trail {
  padding: clamp(2rem, 4.5vw, 3.5rem) 0;
  border-top: 1px solid rgba(37, 50, 77, 0.6);
  border-bottom: 1px solid rgba(37, 50, 77, 0.6);
  background: linear-gradient(180deg, rgba(14, 22, 48, 0.55), rgba(7, 11, 26, 0));
}

.page-faq .faq-trail__figure {
  margin: 1.4rem 0 1.6rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--nebula);
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  padding: 1.1rem 1rem 1.05rem;
  border: 1px solid var(--line);
  border-top: 2px solid rgba(139, 92, 246, 0.7);
  border-radius: var(--radius-md);
  background: linear-gradient(172deg, rgba(17, 26, 51, 0.92), rgba(14, 22, 48, 0.7));
}

.page-faq .faq-step:nth-child(2) {
  border-top-color: rgba(183, 164, 255, 0.65);
}

.page-faq .faq-step:nth-child(3) {
  border-top-color: rgba(94, 234, 212, 0.65);
}

.page-faq .faq-step:nth-child(4) {
  border-top-color: rgba(94, 234, 212, 0.42);
}

.page-faq .faq-step:nth-child(5) {
  border-top-color: rgba(245, 184, 75, 0.68);
}

.page-faq .faq-step__idx {
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-step__title {
  margin: 0.5rem 0 0.4rem;
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--silver);
}

.page-faq .faq-step__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.72;
  color: rgba(230, 236, 247, 0.78);
}

/* ---------- 更新节奏 ---------- */
.page-faq .faq-rhythm-section {
  padding: clamp(2rem, 4.5vw, 3.5rem) 0;
}

.page-faq .faq-rhythm {
  display: grid;
  gap: 0.6rem;
  margin-top: 1.4rem;
}

.page-faq .faq-rhythm__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 0.45rem 1rem;
  padding: 0.85rem 1rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(14, 22, 48, 0.66);
}

.page-faq .faq-rhythm__period {
  grid-column: 1 / -1;
  font-size: 0.8125rem;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-rhythm__text {
  font-size: 0.9375rem;
  line-height: 1.7;
  color: rgba(230, 236, 247, 0.84);
}

.page-faq .faq-rhythm__row .pill {
  justify-self: end;
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  padding: 0 0 clamp(2.5rem, 5vw, 4rem);
}

.page-faq .faq-support__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.25rem;
  align-items: start;
}

.page-faq .faq-support__check {
  margin: 1.1rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-support__check li {
  position: relative;
  padding-left: 1.6rem;
  font-size: 0.9375rem;
  line-height: 1.72;
  color: rgba(230, 236, 247, 0.85);
}

.page-faq .faq-support__check li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 2px;
  background: var(--mint);
}

.page-faq .faq-support__more {
  margin: 1.1rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.75;
  color: rgba(230, 236, 247, 0.72);
}

.page-faq .faq-contact {
  padding: 1.25rem;
  border: 1px solid rgba(139, 92, 246, 0.35);
  border-radius: var(--radius-lg);
  background: linear-gradient(155deg, rgba(139, 92, 246, 0.18), rgba(17, 26, 51, 0.92) 58%);
}

.page-faq .faq-contact__label {
  margin: 0.9rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.12em;
  color: var(--violet-soft);
}

.page-faq .faq-contact__label:first-child {
  margin-top: 0;
}

.page-faq .faq-contact__value {
  margin: 0.3rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.65;
  color: var(--silver);
  overflow-wrap: anywhere;
  word-break: break-word;
}

.page-faq .faq-contact__value a {
  color: var(--silver);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: rgba(183, 164, 255, 0.5);
}

.page-faq .faq-contact__value a:hover {
  color: var(--mint);
}

.page-faq .faq-contact__hint {
  margin: 0.25rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: rgba(230, 236, 247, 0.62);
}

.page-faq .faq-contact__cta {
  margin-top: 1.25rem;
  width: 100%;
  justify-content: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 600px) {
  .page-faq .faq-kinds {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-rhythm__row {
    grid-template-columns: 8.5rem minmax(0, 1fr) auto;
    align-items: center;
  }

  .page-faq .faq-rhythm__period {
    grid-column: auto;
  }
}

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

  .page-faq .faq-support__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: clamp(1.5rem, 3vw, 2.5rem);
  }
}

@media (min-width: 960px) {
  .page-faq .faq-steps {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-workspace {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 5.5rem;
  }

  .page-faq .faq-qa {
    padding-left: 1.6rem;
  }

  .page-faq .faq-qa::before {
    content: "";
    position: absolute;
    left: 0.4rem;
    top: 0.7rem;
    bottom: 0.7rem;
    width: 1px;
    background: linear-gradient(180deg, rgba(139, 92, 246, 0.85), rgba(139, 92, 246, 0.08));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path,
  .page-faq .faq-path__go,
  .page-faq .faq-rail__link,
  .page-faq .faq-group,
  .page-faq .faq-qa__item {
    transition: none;
  }

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

  .page-faq .faq-path:hover .faq-path__go {
    transform: none;
  }
}
<<<END>>>