.page-faq {
  --faq-measure: 46rem;
  --faq-answer: 36rem;
  --faq-rail-w: 212px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: calc(var(--masthead-space) + 24px) 0 44px;
  border-bottom: 1px solid var(--border);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(0, 229, 192, .10), transparent 58%),
    linear-gradient(180deg, var(--surface) 0%, var(--bg) 82%);
}

.page-faq .breadcrumbs {
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 32px;
}

.page-faq .faq-hero__lead .h1 {
  margin: 10px 0 18px;
  max-width: 20ch;
}

.page-faq .faq-hero__lead .lede {
  max-width: 40rem;
  color: var(--muted);
}

.page-faq .faq-hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  align-self: start;
}

.page-faq .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px 20px;
  background: var(--surface-2);
}

.page-faq .stat__num {
  font-family: var(--font-mono);
  font-size: var(--fs-32);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: -0.02em;
}

.page-faq .stat__label {
  font-size: var(--fs-14);
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 外壳与侧栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 28px;
  padding: 48px 0 96px;
}

.page-faq .faq-rail {
  border: 1px solid var(--border);
  background: var(--surface-2);
  padding: 14px;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-faq .faq-rail__link {
  display: block;
  white-space: nowrap;
  padding: 8px 13px;
  border: 1px solid var(--border);
  font-size: var(--fs-14);
  color: var(--muted);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

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

/* ---------- 章节 ---------- */
.page-faq .faq-main {
  min-width: 0;
}

.page-faq .faq-sec + .faq-sec {
  margin-top: 64px;
  padding-top: 44px;
  border-top: 1px solid var(--border);
}

.page-faq .faq-sec__head {
  max-width: var(--faq-measure);
}

.page-faq .faq-sec__head .eyebrow {
  color: var(--cyan);
  margin: 0 0 10px;
}

.page-faq .faq-sec__head .h2 {
  margin: 0 0 14px;
}

.page-faq .faq-sec__intro {
  margin: 0;
  font-size: var(--fs-18);
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 28px 0 0;
  border: 1px solid var(--border);
  background: var(--surface-2);
}

.page-faq .faq-figure--inline {
  margin-top: 0;
}

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

.page-faq .faq-figure__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--border);
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--muted);
}

/* ---------- 三步 ---------- */
.page-faq .steps {
  display: grid;
  gap: 1px;
  margin: 28px 0 0;
  padding: 0;
  list-style: none;
  background: var(--border);
  border: 1px solid var(--border);
}

.page-faq .step {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 24px 22px 26px;
  background: var(--surface-2);
  transition: background var(--dur) var(--ease);
}

.page-faq .step:hover {
  background: var(--surface);
}

.page-faq .step__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-32);
  line-height: 1;
  color: var(--cyan);
}

.page-faq .step__title {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--text);
}

.page-faq .step__body {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .step__link {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .step__check {
  margin: auto 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .step__check strong {
  color: var(--text);
}

/* ---------- 收藏方案 ---------- */
.page-faq .plans {
  display: grid;
  gap: 1px;
  margin-top: 26px;
  background: var(--border);
  border: 1px solid var(--border);
}

.page-faq .plan {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--surface-2);
}

.page-faq .plan--sync {
  background: linear-gradient(180deg, rgba(0, 229, 192, .09), var(--surface-2) 62%);
}

.page-faq .plan__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .plan__title {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--text);
}

.page-faq .plan__body {
  margin: 0;
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .plan__fit {
  margin: auto 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--border);
  font-size: var(--fs-14);
  color: var(--silver);
}

.page-faq .note-line {
  margin: 22px 0 0;
  padding-left: 16px;
  border-left: 2px solid var(--cyan);
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--muted);
  max-width: var(--faq-measure);
}

/* ---------- 登录排查 ---------- */
.page-faq .triage {
  display: grid;
  gap: 18px;
  margin-top: 26px;
}

.page-faq .triage__item {
  padding: 22px;
  border: 1px solid var(--border);
  border-top: 2px solid var(--border-strong);
  background: var(--surface-2);
  transition: border-top-color var(--dur) var(--ease);
}

.page-faq .triage__item:hover {
  border-top-color: var(--cyan);
}

.page-faq .triage__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .triage__title {
  margin: 0;
  font-size: var(--fs-18);
  font-weight: 700;
  color: var(--text);
}

.page-faq .triage__steps {
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 9px;
  counter-reset: tri;
}

.page-faq .triage__steps li {
  position: relative;
  padding-left: 28px;
  counter-increment: tri;
  font-size: var(--fs-14);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .triage__steps li::before {
  content: counter(tri, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 1px;
  font-family: var(--font-mono);
  font-size: var(--fs-12);
  color: var(--cyan);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 8px;
  margin-top: 24px;
}

.page-faq .faq-list--flush {
  margin-top: 0;
}

.page-faq .faq-item {
  border: 1px solid var(--border);
  background: var(--surface-2);
  transition: border-color var(--dur) var(--ease), transform var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}

.page-faq .faq-item[open] {
  border-color: var(--border-strong);
}

.page-faq .faq-item summary {
  display: grid;
  grid-template-columns: 2px minmax(0, 1fr) 14px;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

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

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

.page-faq .faq-item__bar {
  display: block;
  width: 2px;
  height: 16px;
  background: var(--border-strong);
  transition: background var(--dur) var(--ease);
}

.page-faq .faq-item[open] .faq-item__bar {
  background: var(--cyan);
}

.page-faq .faq-item__q {
  font-size: var(--fs-16);
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
}

.page-faq .faq-item__sign {
  position: relative;
  display: block;
  width: 14px;
  height: 14px;
  justify-self: end;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  left: 1px;
  top: 6px;
  width: 12px;
  height: 1px;
  background: var(--muted);
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .faq-item__sign::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-item__sign::after {
  transform: rotate(0deg);
}

.page-faq .faq-item[open] .faq-item__sign::before,
.page-faq .faq-item[open] .faq-item__sign::after {
  background: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 18px 20px 34px;
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: var(--faq-answer);
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 图文并排 ---------- */
.page-faq .split {
  display: grid;
  gap: 24px;
  margin-top: 28px;
}

/* ---------- 工具分类 ---------- */
.page-faq .toolcats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .toolcats li {
  padding: 8px 15px;
  border: 1px solid var(--border);
  background: var(--surface-2);
  font-family: var(--font-mono);
  font-size: var(--fs-14);
  color: var(--text);
  transition: border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .toolcats li:hover {
  border-color: var(--cyan);
  color: var(--cyan);
}

/* ---------- 联系准备 ---------- */
.page-faq .prep {
  display: grid;
  gap: 1px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  background: var(--border);
  border: 1px solid var(--border);
}

.page-faq .prep li {
  padding: 18px 20px;
  background: var(--surface-2);
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .prep strong {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-16);
  color: var(--text);
}

.page-faq .reach {
  display: grid;
  gap: 1px;
  margin-top: 24px;
  background: var(--border);
  border: 1px solid var(--border);
}

.page-faq .reach__cell {
  padding: 20px;
  background: var(--surface);
}

.page-faq .reach__k {
  margin: 0 0 8px;
  font-size: var(--fs-12);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .reach__v {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: var(--fs-16);
  line-height: 1.6;
  color: var(--text);
  word-break: break-all;
}

.page-faq .reach__note {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .reach__note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .reach__cell .copy-btn {
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero {
    padding: calc(var(--masthead-space) + 36px) 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 48px;
    align-items: end;
  }

  .page-faq .steps,
  .page-faq .plans {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .triage {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

  .page-faq .reach {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.15fr);
    gap: 36px;
    align-items: start;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 60px;
    padding: 64px 0 112px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--masthead-space) + 12px);
    align-self: start;
    border: 0;
    border-left: 1px solid var(--border);
    background: transparent;
    padding: 4px 0 4px 14px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    border: 0;
    padding: 8px 0;
    font-size: var(--fs-14);
    white-space: normal;
  }

  .page-faq .faq-sec + .faq-sec {
    margin-top: 80px;
    padding-top: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item:hover {
    transform: none;
  }
}
<<<END>>>