.page-faq {
  background: var(--void);
  color: var(--star);
  padding-bottom: clamp(56px, 8vw, 104px);
}

.page-faq [id] {
  scroll-margin-top: 132px;
}

.page-faq .breadcrumb {
  padding-top: clamp(18px, 3vw, 28px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: clamp(18px, 3vw, 34px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -14%;
  width: min(760px, 92vw);
  height: min(760px, 92vw);
  background: radial-gradient(circle at center, rgba(124, 92, 255, 0.24), rgba(70, 224, 200, 0.07) 46%, transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(20px, 3vw, 32px);
}

.page-faq .faq-title {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(2rem, 5.6vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: 0.05em;
  max-width: 22em;
}

.page-faq .faq-hero__lead {
  margin: clamp(16px, 2.4vw, 24px) 0 0;
  max-width: 36em;
  color: var(--mist);
  font-size: var(--step-2);
  line-height: 1.78;
}

.page-faq .faq-hero__side {
  border: var(--line);
  border-top: 2px solid var(--nebula);
  background: rgba(12, 18, 36, 0.72);
  padding: 18px 20px 20px;
}

.page-faq .faq-hero__side-list {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-hero__side-list a {
  display: block;
  padding: 8px 0 8px 16px;
  position: relative;
  color: var(--star);
  text-decoration: none;
  font-size: 0.96rem;
  line-height: 1.6;
  border-bottom: 1px solid transparent;
  transition: color 180ms ease-out, border-color 180ms ease-out;
}

.page-faq .faq-hero__side-list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 8px;
  height: 1px;
  background: var(--nebula);
}

.page-faq .faq-hero__side-list a:hover {
  color: var(--electric);
  border-bottom-color: var(--orbit);
}

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

/* ---------- 三步流程带 ---------- */
.page-faq .faq-flow {
  position: relative;
  margin-top: clamp(32px, 5vw, 56px);
  padding-top: clamp(26px, 4vw, 42px);
  border-top: var(--line);
  isolation: isolate;
}

.page-faq .faq-flow__bg {
  position: absolute;
  inset: 0;
  z-index: -1;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.16;
  filter: saturate(0.85);
  pointer-events: none;
}

.page-faq .faq-flow__rail {
  display: none;
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 8px;
  color: var(--orbit);
}

.page-faq .faq-flow__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(14px, 2.4vw, 24px);
}

.page-faq .faq-flow__step a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 22px 20px 24px;
  border: var(--line);
  background: linear-gradient(180deg, rgba(18, 26, 48, 0.94), rgba(12, 18, 36, 0.94));
  color: var(--star);
  text-decoration: none;
  transition: transform 180ms ease-out, border-color 180ms ease-out;
}

.page-faq .faq-flow__step a:hover {
  transform: translateY(-4px);
  border-color: var(--nebula);
}

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

.page-faq .faq-flow__num {
  font-size: 1.5rem;
  letter-spacing: 0.08em;
  color: var(--nebula);
  line-height: 1;
}

.page-faq .faq-flow__title {
  font-size: 1.12rem;
  letter-spacing: 0.04em;
  line-height: 1.4;
}

.page-faq .faq-flow__desc {
  font-size: 0.95rem;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 通用章节 ---------- */
.page-faq .faq-sec {
  padding: clamp(52px, 8vw, 96px) 0 0;
}

.page-faq .section-head {
  margin-bottom: clamp(24px, 3.6vw, 42px);
}

.page-faq .faq-h2 {
  margin: 10px 0 0;
  font-family: var(--font-sans);
  font-weight: 200;
  font-size: clamp(1.6rem, 3.4vw, 2.45rem);
  line-height: 1.22;
  letter-spacing: 0.04em;
  max-width: 22em;
}

.page-faq .section-head__hint {
  margin: 14px 0 0;
  max-width: 40em;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.75;
}

/* ---------- 五项检查 ---------- */
.page-faq .faq-checks {
  display: grid;
  gap: clamp(14px, 2vw, 20px);
}

.page-faq .faq-check {
  position: relative;
  padding: clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 26px) clamp(18px, 2.6vw, 22px);
  border: var(--line);
  border-left: 2px solid var(--orbit);
  background: var(--paper);
  transition: border-color 180ms ease-out, transform 180ms ease-out;
}

.page-faq .faq-check:hover {
  border-left-color: var(--nebula);
  transform: translateY(-3px);
}

.page-faq .faq-check__num {
  margin: 0;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  color: var(--electric);
}

.page-faq .faq-check__title {
  margin: 8px 0 0;
  font-size: 1.2rem;
  font-weight: 400;
  letter-spacing: 0.03em;
  line-height: 1.45;
}

.page-faq .faq-check__body {
  margin: 10px 0 0;
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.78;
}

.page-faq .faq-check__body a {
  color: var(--star);
  text-decoration: underline;
  text-decoration-color: var(--nebula);
  text-underline-offset: 3px;
}

.page-faq .faq-check__body a:hover {
  color: var(--electric);
}

.page-faq .faq-check__body code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  color: var(--star);
  background: rgba(70, 224, 200, 0.08);
  padding: 2px 6px;
  letter-spacing: 0.02em;
}

.page-faq .faq-check__expect {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px dashed var(--orbit);
  color: var(--star);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-check__expect .mono {
  display: block;
  margin-bottom: 4px;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  color: var(--electric);
  text-transform: uppercase;
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-sec--qa {
  position: relative;
}

.page-faq .faq-qa {
  display: grid;
  gap: 12px;
  max-width: 48em;
}

.page-faq .faq-item {
  border: var(--line);
  border-left: 2px solid var(--orbit);
  background: rgba(12, 18, 36, 0.66);
  transition: border-color 180ms ease-out, background 180ms ease-out;
}

.page-faq .faq-item[open] {
  border-left-color: var(--nebula);
  background: var(--paper);
}

.page-faq .faq-item summary {
  position: relative;
  padding: 16px 46px 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 1.04rem;
  line-height: 1.6;
  letter-spacing: 0.02em;
  color: var(--star);
  transition: color 180ms ease-out;
}

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

.page-faq .faq-item summary::after {
  content: "";
  position: absolute;
  right: 20px;
  top: 50%;
  width: 8px;
  height: 8px;
  border-right: 1.5px solid var(--mist);
  border-bottom: 1.5px solid var(--mist);
  transform: translateY(-70%) rotate(45deg);
  transition: transform 180ms ease-out, border-color 180ms ease-out;
}

.page-faq .faq-item[open] summary::after {
  transform: translateY(-30%) rotate(-135deg);
  border-color: var(--nebula);
}

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

.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--electric);
  outline-offset: -2px;
}

.page-faq .faq-item__body {
  padding: 0 18px 18px;
}

.page-faq .faq-item__steps {
  margin: 0;
  padding-left: 1.2em;
  color: var(--mist);
  font-size: 0.96rem;
  line-height: 1.78;
}

.page-faq .faq-item__steps li + li {
  margin-top: 6px;
}

.page-faq .faq-item__steps a {
  color: var(--star);
  text-decoration: underline;
  text-decoration-color: var(--nebula);
  text-underline-offset: 3px;
}

.page-faq .faq-item__steps a:hover {
  color: var(--electric);
}

.page-faq .faq-qa__note {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 1px solid var(--orbit);
  color: var(--archive);
  font-size: 0.92rem;
  line-height: 1.7;
}

.page-faq .faq-qa__note a {
  color: var(--mist);
  text-decoration: underline;
  text-decoration-color: var(--orbit);
  text-underline-offset: 3px;
}

.page-faq .faq-qa__note a:hover {
  color: var(--electric);
}

/* ---------- 小屏兼容 ---------- */
.page-faq .faq-sec--screen {
  padding-top: clamp(48px, 7vw, 88px);
}

.page-faq .faq-screen__grid {
  display: grid;
  gap: clamp(22px, 3.6vw, 40px);
  align-items: start;
}

.page-faq .faq-screen__pairs {
  display: grid;
  gap: 12px;
}

.page-faq .faq-pair {
  display: grid;
  border: var(--line);
  background: rgba(12, 18, 36, 0.66);
}

.page-faq .faq-pair__symptom,
.page-faq .faq-pair__action {
  margin: 0;
  padding: 15px 17px;
  font-size: 0.96rem;
  line-height: 1.72;
}

.page-faq .faq-pair__symptom {
  color: var(--mist);
  border-bottom: 1px solid var(--orbit);
  position: relative;
  padding-left: 34px;
}

.page-faq .faq-pair__symptom::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 23px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 0 3px rgba(255, 122, 61, 0.14);
}

.page-faq .faq-pair__action {
  color: var(--star);
  background: rgba(124, 92, 255, 0.07);
  position: relative;
  padding-left: 34px;
}

.page-faq .faq-pair__action::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 22px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--electric);
  box-shadow: 0 0 0 3px rgba(70, 224, 200, 0.14);
}

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

/* ---------- 版本 ---------- */
.page-faq .faq-version {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  padding: clamp(20px, 3vw, 34px);
  border: var(--line);
  background: linear-gradient(140deg, rgba(124, 92, 255, 0.14), rgba(5, 7, 15, 0.4) 58%);
}

.page-faq .faq-version__stamp {
  display: flex;
  flex-direction: column;
  gap: 6px;
  justify-content: center;
  padding: 18px 20px;
  border: 1px solid var(--orbit);
  background: rgba(5, 7, 15, 0.6);
  text-align: left;
}

.page-faq .faq-version__num {
  font-size: clamp(2.4rem, 6vw, 3.4rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--electric);
}

.page-faq .faq-version__body p {
  margin: 0;
  color: var(--mist);
  font-size: 1rem;
  line-height: 1.78;
  max-width: 34em;
}

.page-faq .faq-version__steps {
  margin: 16px 0 0;
  padding-left: 1.2em;
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.8;
}

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

.page-faq .faq-version__steps strong {
  color: var(--star);
  font-weight: 500;
}

.page-faq .faq-version__link {
  margin-top: 20px;
}

/* ---------- 反馈 ---------- */
.page-faq .faq-sec--feedback {
  padding-top: clamp(48px, 7vw, 88px);
}

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

.page-faq .faq-need li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 13px 16px;
  border: 1px dashed var(--orbit);
  background: rgba(18, 26, 48, 0.5);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  line-height: 1.7;
  color: var(--star);
}

.page-faq .faq-need__idx {
  flex: 0 0 auto;
  color: var(--signal);
  letter-spacing: 0.08em;
}

.page-faq .faq-feedback__foot {
  margin-top: clamp(22px, 3vw, 32px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: var(--line);
  display: grid;
  gap: 20px;
}

.page-faq .faq-feedback__foot p {
  margin: 0;
  max-width: 38em;
  color: var(--mist);
  font-size: 0.98rem;
  line-height: 1.78;
}

.page-faq .faq-feedback__foot .mono {
  color: var(--star);
  letter-spacing: 0.02em;
}

.page-faq .faq-feedback__foot a:not(.btn) {
  color: var(--star);
  text-decoration: underline;
  text-decoration-color: var(--nebula);
  text-underline-offset: 3px;
}

.page-faq .faq-feedback__foot a:not(.btn):hover {
  color: var(--electric);
}

.page-faq .faq-feedback__foot .btn {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-pair {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .page-faq .faq-pair__symptom {
    border-bottom: 0;
    border-right: 1px solid var(--orbit);
  }

  .page-faq .faq-need {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-faq .faq-flow__rail {
    display: block;
  }

  .page-faq .faq-flow__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: clamp(20px, 3vw, 34px);
  }

  .page-faq .faq-feedback__foot {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }

  .page-faq .faq-feedback__foot .btn {
    justify-self: end;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
  }

  .page-faq .faq-checks {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-version {
    grid-template-columns: minmax(0, 0.62fr) minmax(0, 1.6fr);
    align-items: start;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-screen__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
  }

  .page-faq .faq-sec--screen {
    position: relative;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-flow__step a,
  .page-faq .faq-check,
  .page-faq .faq-item,
  .page-faq .faq-item summary::after,
  .page-faq .faq-hero__side-list a {
    transition: none;
  }

  .page-faq .faq-flow__step a:hover,
  .page-faq .faq-check:hover {
    transform: none;
  }
}
<<<END>>>