.page-faq {
  --faq-glow: rgba(34, 211, 238, .16);
  --faq-soft: #C3CCEC;
  background: var(--ink-950);
  color: var(--white);
  padding-bottom: 64px;
  font-family: var(--sans);
}

.page-faq * {
  box-sizing: border-box;
}

.page-faq a {
  color: inherit;
}

.page-faq a:focus-visible,
.page-faq summary:focus-visible,
.page-faq button:focus-visible,
.page-faq input:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

.page-faq .breadcrumb {
  padding-top: 18px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumb__list a {
  text-decoration: none;
  color: var(--muted);
}

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

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 34px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 84px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 6px 12px;
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--cyan);
  background: var(--ink-800);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 8px), calc(100% - 8px) 100%, 0 100%);
}

.page-faq .faq-hero h1 {
  margin: 18px 0 0;
  font-size: clamp(27px, 7.2vw, 56px);
  line-height: 1.16;
  font-weight: 700;
  letter-spacing: -.01em;
  max-width: 15em;
}

.page-faq .faq-hero h1 em {
  font-style: normal;
  color: var(--cyan);
  display: block;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 40em;
  font-size: 15.5px;
  line-height: 1.95;
  color: var(--muted);
}

.page-faq .faq-facts {
  list-style: none;
  margin: 24px 0 0;
  padding: 1px;
  display: grid;
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .faq-facts li {
  background: var(--ink-900);
  padding: 13px 15px;
}

.page-faq .faq-facts b {
  display: block;
  font-family: var(--mono);
  font-size: 21px;
  font-weight: 600;
  color: var(--cyan);
  letter-spacing: .02em;
}

.page-faq .faq-facts span {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 32px;
  padding-top: 30px;
}

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

.page-faq .faq-sec {
  padding-bottom: 38px;
  scroll-margin-top: 84px;
}

.page-faq .faq-sec + .faq-sec {
  padding-top: 34px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 8px;
  margin-bottom: 20px;
}

.page-faq .faq-sec__num {
  font-size: 12px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-faq .faq-sec h2 {
  margin: 0;
  font-size: clamp(20px, 4.6vw, 30px);
  line-height: 1.34;
  font-weight: 700;
}

.page-faq .faq-sec__note {
  margin: 0;
  max-width: 36em;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-fig {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  background: var(--ink-800);
  overflow: hidden;
}

.page-faq .faq-fig--tight {
  margin-top: 22px;
  margin-bottom: 0;
}

.page-faq .faq-fig img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-fig__cap {
  padding: 11px 14px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 九项刻度条 ---------- */
.page-faq .faq-rail {
  display: grid;
  grid-template-columns: repeat(9, minmax(0, 1fr));
  gap: 3px;
  margin: 0 0 16px;
}

.page-faq .faq-rail span {
  display: block;
  padding: 8px 2px 7px;
  font-size: 9.5px;
  line-height: 1.3;
  text-align: center;
  color: var(--muted);
  background: var(--ink-800);
  border-top: 2px solid var(--line);
  word-break: keep-all;
  overflow-wrap: anywhere;
}

.page-faq .faq-rail i {
  display: block;
  font-family: var(--mono);
  font-style: normal;
  font-size: 10px;
  color: var(--cyan);
  margin-bottom: 3px;
}

/* ---------- 勾选清单 ---------- */
.page-faq .faq-check {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-check__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-check__box {
  appearance: none;
  -webkit-appearance: none;
  position: relative;
  width: 22px;
  height: 22px;
  margin: 2px 0 0;
  flex: none;
  background: var(--ink-800);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-check__box:checked {
  background: var(--cyan);
  border-color: var(--cyan);
}

.page-faq .faq-check__box:checked::after {
  content: "";
  position: absolute;
  left: 6px;
  top: 2px;
  width: 6px;
  height: 11px;
  border-right: 2px solid var(--ink-950);
  border-bottom: 2px solid var(--ink-950);
  transform: rotate(42deg);
}

.page-faq .faq-check__main {
  display: block;
  min-width: 0;
  cursor: pointer;
}

.page-faq .faq-check__head {
  display: flex;
  align-items: baseline;
  gap: 9px;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  transition: color .18s var(--ease);
}

.page-faq .faq-check__no {
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-check__act {
  display: block;
  margin-top: 5px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-check__std {
  display: block;
  margin-top: 6px;
  padding-left: 10px;
  border-left: 2px solid var(--line);
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-check__box:checked ~ .faq-check__main .faq-check__head {
  color: var(--muted);
  text-decoration: line-through;
  text-decoration-color: var(--line);
}

.page-faq .faq-check__box:checked ~ .faq-check__main .faq-check__std {
  border-left-color: var(--green);
}

/* ---------- 折叠流程 ---------- */
.page-faq .faq-flow {
  display: grid;
  gap: 10px;
}

.page-faq .faq-flow__item {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-left: 3px solid var(--line);
  transition: border-left-color .2s var(--ease);
}

.page-faq .faq-flow__item[open] {
  border-left-color: var(--cyan);
  background: var(--ink-800);
}

.page-faq .faq-flow__item summary {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 14px 15px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-flow__item summary::after {
  content: "+";
  margin-left: auto;
  font-family: var(--mono);
  font-size: 16px;
  color: var(--cyan);
}

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

.page-faq .faq-flow__num {
  flex: none;
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-flow__body {
  padding: 2px 15px 16px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0 0 0 16px;
  border-left: 1px dashed var(--line);
}

.page-faq .faq-steps li {
  position: relative;
  padding: 0 0 14px 12px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--faq-soft);
}

.page-faq .faq-steps li:last-child {
  padding-bottom: 0;
}

.page-faq .faq-steps li::before {
  content: "";
  position: absolute;
  left: -21px;
  top: 8px;
  width: 7px;
  height: 7px;
  background: var(--line);
  border-radius: 50%;
}

.page-faq .faq-steps li:last-child::before {
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--faq-glow);
}

.page-faq .faq-steps__why {
  display: block;
  margin-top: 4px;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 提示行 ---------- */
.page-faq .faq-tip {
  margin: 16px 0 0;
  padding: 11px 14px;
  font-size: 13px;
  line-height: 1.8;
  color: var(--muted);
  background: var(--ink-900);
  border-left: 2px solid var(--violet);
}

.page-faq .faq-tip a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .45);
}

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

/* ---------- 登录提示过滤与表格 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 0 0 16px;
}

.page-faq .faq-filter__btn {
  font-family: inherit;
  font-size: 13px;
  padding: 8px 14px;
  min-height: 38px;
  color: var(--muted);
  background: var(--ink-800);
  border: 1px solid var(--line);
  cursor: pointer;
  transition: color .18s var(--ease), background .18s var(--ease), border-color .18s var(--ease);
}

.page-faq .faq-filter__btn:hover {
  color: var(--white);
  border-color: var(--cyan);
}

.page-faq .faq-filter__btn[aria-pressed="true"] {
  color: var(--ink-950);
  background: var(--cyan);
  border-color: var(--cyan);
  font-weight: 600;
}

.page-faq .faq-log {
  border: 1px solid var(--line);
  border-bottom: none;
}

.page-faq .faq-log__row {
  display: grid;
  gap: 8px;
  padding: 15px;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
  transition: box-shadow .2s var(--ease);
}

.page-faq .faq-log__row:nth-child(even) {
  background: var(--ink-800);
}

.page-faq .faq-log__row:hover {
  box-shadow: inset 3px 0 0 0 var(--orange);
}

.page-faq .faq-log__tip {
  margin: 0;
  font-size: 14.5px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--white);
}

.page-faq .faq-log__tag {
  display: inline-block;
  margin-right: 8px;
  padding: 2px 7px;
  font-size: 10.5px;
  letter-spacing: .1em;
  color: var(--orange);
  border: 1px solid rgba(255, 122, 26, .4);
  background: rgba(255, 122, 26, .08);
  vertical-align: 2px;
}

.page-faq .faq-log__act {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 换设备流程 ---------- */
.page-faq .faq-switch {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
  counter-reset: swap;
}

.page-faq .faq-switch li {
  position: relative;
  padding: 15px 16px 15px 18px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-left: 3px solid var(--violet);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
}

.page-faq .faq-switch li:nth-child(2) {
  border-left-color: var(--orange);
}

.page-faq .faq-switch li:nth-child(3) {
  border-left-color: var(--cyan);
}

.page-faq .faq-switch li:nth-child(4) {
  border-left-color: var(--green);
}

.page-faq .faq-switch__step {
  display: block;
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--muted);
}

.page-faq .faq-switch h3 {
  margin: 7px 0 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-switch p {
  margin: 7px 0 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 人工支持 ---------- */
.page-faq .faq-support {
  display: grid;
  gap: 14px;
}

.page-faq .faq-support__col {
  padding: 16px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-top: 2px solid var(--amber);
}

.page-faq .faq-support__col:last-child {
  border-top-color: var(--cyan);
}

.page-faq .faq-support h3 {
  margin: 0 0 10px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
}

.page-faq .faq-support__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-support__list li {
  position: relative;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--faq-soft);
}

.page-faq .faq-support__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 11px;
  width: 6px;
  height: 6px;
  background: var(--amber);
}

.page-faq .faq-support__list--num {
  counter-reset: sup;
}

.page-faq .faq-support__list--num li::before {
  counter-increment: sup;
  content: counter(sup);
  top: 2px;
  width: auto;
  height: auto;
  background: none;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--cyan);
}

.page-faq .faq-support__note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-support__cta {
  margin: 16px 0 0;
}

.page-faq .btn--sm {
  font-size: 13px;
  padding: 10px 16px;
}

/* ---------- 清单用法 ---------- */
.page-faq .faq-ways {
  display: grid;
  gap: 12px;
}

.page-faq .faq-ways__item {
  padding: 15px 16px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-bottom: 2px solid var(--violet);
}

.page-faq .faq-ways__item h3 {
  margin: 0 0 7px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--violet);
}

.page-faq .faq-ways__item p {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 侧栏 ---------- */
.page-faq .faq-aside {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-aside__box {
  padding: 15px;
  background: var(--ink-900);
  border: 1px solid var(--line);
}

.page-faq .faq-aside__box--status {
  border-top: 2px solid var(--cyan);
}

.page-faq .faq-aside__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-aside__nav {
  list-style: none;
  margin: 0;
  padding: 0 0 4px;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-faq .faq-aside__nav::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-aside__nav li {
  flex: 0 0 auto;
}

.page-faq .faq-aside__nav a {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 9px 11px;
  min-height: 40px;
  font-size: 13.5px;
  white-space: nowrap;
  text-decoration: none;
  color: var(--muted);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 2px solid var(--violet);
  transition: color .18s var(--ease), border-left-color .18s var(--ease), background .18s var(--ease);
}

.page-faq .faq-aside__nav a .mono {
  font-size: 10.5px;
  color: var(--violet);
}

.page-faq .faq-aside__nav a:hover,
.page-faq .faq-aside__nav a[aria-current],
.page-faq .faq-aside__nav a[data-active="true"] {
  color: var(--white);
  background: var(--ink-800);
  border-left-color: var(--cyan);
}

.page-faq .faq-aside__nav a[aria-current] .mono,
.page-faq .faq-aside__nav a[data-active="true"] .mono {
  color: var(--cyan);
}

.page-faq .faq-aside__meta {
  margin: 0;
  display: grid;
  gap: 1px;
  background: var(--line);
}

.page-faq .faq-aside__meta div {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  padding: 8px 10px;
  background: var(--ink-800);
}

.page-faq .faq-aside__meta dt {
  font-size: 12.5px;
  color: var(--muted);
}

.page-faq .faq-aside__meta dd {
  margin: 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .faq-aside__hint {
  margin: 12px 0 14px;
  font-size: 12.5px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */
@media (min-width: 560px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-rail span {
    font-size: 10.5px;
    padding: 9px 4px;
  }
}

@media (min-width: 768px) {
  .page-faq .faq-sec__head {
    grid-template-columns: 52px minmax(0, 1fr);
    column-gap: 16px;
    row-gap: 7px;
  }

  .page-faq .faq-sec__num {
    grid-row: 1 / 3;
    padding-top: 7px;
    text-align: right;
  }

  .page-faq .faq-layout {
    padding-top: 38px;
  }

  .page-faq .faq-log__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    gap: 22px;
    align-items: start;
    padding: 16px 18px;
  }

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

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

  .page-faq .faq-check__item {
    gap: 14px;
    padding: 18px 0;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 1fr) 282px;
    gap: 46px;
    align-items: start;
  }

  .page-faq .faq-aside {
    grid-column: 2;
    grid-row: 1;
    position: sticky;
    top: 24px;
  }

  .page-faq .faq-aside__nav {
    display: grid;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-aside__nav a {
    white-space: normal;
    border-left-width: 2px;
  }

  .page-faq .faq-hero {
    padding: 34px 0 40px;
  }

  .page-faq .faq-hero .lede {
    font-size: 16.5px;
  }

  .page-faq .faq-fig--tight {
    margin-top: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition: none !important;
    animation: none !important;
    scroll-behavior: auto !important;
  }
}
<<<END>>>