.page-faq {
  --faq-sticky-top: 5.5rem;
  background: var(--coal);
  color: var(--mist);
  overflow-x: clip;
}

.page-faq .faq-crumbs {
  padding-top: clamp(1rem, 3vw, 1.6rem);
  padding-bottom: 0.4rem;
}

.page-faq .faq-crumbs .crumbs__link,
.page-faq .faq-crumbs .crumbs__current,
.page-faq .faq-crumbs .crumbs__sep {
  color: var(--muted-dark);
}

.page-faq .faq-crumbs .crumbs__link:hover {
  color: var(--orange);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(2rem, 5vw, 3.4rem) 0 clamp(2.6rem, 6vw, 4.6rem);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -18%;
  right: -22%;
  width: min(78%, 720px);
  aspect-ratio: 1;
  background: linear-gradient(140deg, rgba(255, 90, 31, 0.42), rgba(200, 62, 45, 0.12) 58%, transparent 72%);
  transform: rotate(-14deg);
  border-radius: 44% 56% 38% 62% / 52% 40% 60% 48%;
  pointer-events: none;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -10%;
  bottom: -40%;
  width: 46%;
  aspect-ratio: 1;
  background: radial-gradient(circle at 60% 40%, rgba(79, 179, 169, 0.18), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(1.6rem, 4vw, 2.8rem);
}

.page-faq .faq-hero__lead h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 8vw, 4.6rem);
  line-height: 1.02;
  letter-spacing: -0.02em;
  margin: 0.6rem 0 1rem;
  color: var(--mist);
  max-width: 16ch;
}

.page-faq .faq-hero__lead .lede {
  max-width: 52ch;
  color: var(--muted-dark);
  font-size: clamp(0.98rem, 2.4vw, 1.08rem);
  line-height: 1.8;
  margin: 0;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.6rem;
}

.page-faq .faq-hero__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.8rem;
  margin: 1.8rem 0 0;
  padding: 1rem 0 0;
  border-top: 1px solid var(--line-dark);
}

.page-faq .faq-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-hero__cap {
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  color: var(--muted-dark);
}

.page-faq .faq-hero__figure {
  margin: 0;
  position: relative;
}

.page-faq .faq-hero__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line-dark);
  object-fit: cover;
  background: var(--graphite);
}

.page-faq .faq-hero__figure figcaption {
  margin-top: 0.7rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--muted-dark);
  text-transform: uppercase;
}

/* 帮助目录 */
.page-faq .faq-index {
  padding-top: clamp(2.2rem, 5vw, 3.6rem);
  padding-bottom: clamp(2.4rem, 6vw, 4.4rem);
}

.page-faq .faq-index__grid {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
}

.page-faq .faq-index__nav .eyebrow {
  color: var(--data-teal);
}

.page-faq .faq-nav {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.15rem;
}

.page-faq .faq-nav__link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.72rem 0.6rem;
  border-left: 2px solid transparent;
  color: var(--mist);
  text-decoration: none;
  font-size: 0.95rem;
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease), color var(--speed) var(--ease);
}

.page-faq .faq-nav__idx {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted-dark);
}

.page-faq .faq-nav__count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.1rem 0.42rem;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  color: var(--muted-dark);
}

.page-faq .faq-nav__link:hover,
.page-faq .faq-nav__link:focus-visible {
  border-left-color: var(--orange);
  background: rgba(255, 90, 31, 0.09);
  color: var(--orange-lift);
}

.page-faq .faq-nav__link:hover .faq-nav__count {
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .faq-index__hint {
  margin: 1.2rem 0 0;
  padding-left: 0.6rem;
  border-left: 2px solid var(--data-teal);
  font-size: 0.85rem;
  line-height: 1.75;
  color: var(--muted-dark);
}

.page-faq .faq-index__head {
  margin-bottom: 1.6rem;
}

.page-faq .faq-index__head .section__title {
  color: var(--mist);
  margin: 0 0 0.5rem;
}

.page-faq .qa-group {
  margin-bottom: clamp(1.8rem, 4vw, 2.6rem);
  scroll-margin-top: var(--faq-sticky-top);
}

.page-faq .qa-group__title {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.15rem, 3vw, 1.45rem);
  font-weight: 600;
  letter-spacing: 0.01em;
  margin: 0 0 0.7rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--line-dark);
  color: var(--mist);
}

.page-faq .qa-group__idx {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--coal);
  background: var(--orange);
  border-radius: var(--radius-s);
  padding: 0.14rem 0.4rem;
}

.page-faq .qa {
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .qa[open] {
  background: rgba(255, 90, 31, 0.05);
}

.page-faq .qa__q {
  display: flex;
  gap: 0.7rem;
  align-items: baseline;
  padding: 0.95rem 1.9rem 0.95rem 0.55rem;
  cursor: pointer;
  position: relative;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--mist);
  list-style: none;
  transition: color var(--speed) var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  position: absolute;
  right: 0.55rem;
  top: 0.85rem;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  color: var(--orange);
  transition: transform var(--speed) var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--orange-lift);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
}

.page-faq .qa__q:hover {
  color: var(--orange-lift);
}

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

.page-faq .qa__no {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--muted-dark);
  flex: none;
}

.page-faq .qa__a {
  padding: 0 0.55rem 1.1rem 2.1rem;
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.8;
  color: var(--muted-dark);
}

/* 对照阅读（浅色区） */
.page-faq .faq-compare {
  padding-top: clamp(2.4rem, 5vw, 3.8rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-compare__head {
  max-width: 62ch;
  margin-bottom: clamp(1.6rem, 4vw, 2.6rem);
}

.page-faq .faq-compare__head .section__title,
.page-faq .faq-v4 .section__title {
  margin: 0.5rem 0 0.8rem;
  color: var(--ink);
}

.page-faq .faq-compare__head .lede,
.page-faq .faq-v4 .lede {
  margin: 0;
  color: var(--muted-light);
  line-height: 1.8;
}

.page-faq .faq-compare__grid {
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
}

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

.page-faq .faq-compare__figure img {
  width: 100%;
  max-width: 100%;
  height: auto;
  display: block;
  border-radius: var(--radius-m);
  border: 1px solid var(--line-light);
  object-fit: cover;
  background: var(--paper-2);
}

.page-faq .faq-compare__figure figcaption {
  margin-top: 0.65rem;
  font-size: 0.8rem;
  line-height: 1.7;
  color: var(--muted-light);
}

.page-faq .faq-compare__subtitle {
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  margin: 0 0 0.7rem;
  color: var(--ink);
}

.page-faq .rule-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.6;
}

.page-faq .rule-table__caption {
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--muted-light);
  padding-bottom: 0.45rem;
}

.page-faq .rule-table th,
.page-faq .rule-table td {
  padding: 0.6rem 0.5rem;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line-light);
}

.page-faq .rule-table thead th {
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  color: var(--link-paper);
  border-bottom-color: var(--ink);
}

.page-faq .rule-table tbody th {
  font-weight: 600;
  color: var(--ink);
}

.page-faq .rule-table tbody td {
  color: var(--muted-light);
}

.page-faq .rule-table tbody tr:hover {
  background: rgba(255, 90, 31, 0.1);
}

.page-faq .legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1.2rem;
}

.page-faq .legend__item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.42rem;
  padding: 0.32rem 0.7rem;
  border: 1px solid var(--line-light);
  border-radius: 999px;
  font-size: 0.78rem;
  color: var(--ink);
  cursor: help;
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-faq .legend__item:hover,
.page-faq .legend__item:focus-visible,
.page-faq .legend__item:focus-within {
  border-color: var(--orange);
  background: rgba(255, 90, 31, 0.1);
  outline: none;
}

.page-faq .legend__chip {
  width: 0.62rem;
  height: 0.86rem;
  border-radius: 2px;
  display: inline-block;
}

.page-faq .legend__chip--red {
  background: var(--cinnabar);
}

.page-faq .legend__chip--yellow {
  background: var(--card-yellow);
}

.page-faq .legend__chip--teal {
  background: var(--data-teal);
}

.page-faq .legend__tip {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 0.4rem);
  z-index: 4;
  width: min(17rem, 72vw);
  padding: 0.65rem 0.75rem;
  background: var(--graphite);
  color: var(--mist);
  border: 1px solid var(--titanium);
  border-radius: var(--radius-s);
  font-size: 0.78rem;
  line-height: 1.7;
  box-shadow: 0 12px 24px rgba(16, 18, 20, 0.28);
}

.page-faq .legend__item:hover .legend__tip,
.page-faq .legend__item:focus .legend__tip,
.page-faq .legend__item:focus-within .legend__tip {
  display: block;
}

.page-faq .faq-compare__link {
  margin: 1.2rem 0 0;
  font-size: 0.86rem;
  color: var(--muted-light);
}

.page-faq .faq-compare__link a {
  color: var(--link-paper);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-compare__link a:hover {
  color: var(--orange);
}

/* 操作路径 */
.page-faq .faq-flow {
  padding-top: clamp(2.4rem, 5vw, 3.8rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-flow__head {
  max-width: 58ch;
  margin-bottom: clamp(1.6rem, 4vw, 2.4rem);
}

.page-faq .faq-flow__head .section__title {
  color: var(--mist);
}

.page-faq .faq-flow__head .lede {
  color: var(--muted-dark);
}

.page-faq .steps {
  list-style: none;
  counter-reset: step;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-faq .steps__item {
  position: relative;
  padding: 1.1rem 1rem 1.1rem 3.6rem;
  background: var(--graphite);
  border: 1px solid var(--titanium);
  border-left: 3px solid var(--orange);
  border-radius: var(--radius-m);
  transition: border-color var(--speed) var(--ease), background var(--speed) var(--ease);
}

.page-faq .steps__item:hover {
  border-color: var(--orange);
  background: var(--graphite-2);
}

.page-faq .steps__item::before {
  counter-increment: step;
  content: counter(step, decimal-leading-zero);
  position: absolute;
  left: 1rem;
  top: 1.05rem;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .steps__title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0 0 0.4rem;
  color: var(--mist);
}

.page-faq .steps__text {
  margin: 0;
  font-size: 0.9rem;
  line-height: 1.8;
  color: var(--muted-dark);
}

.page-faq .faq-flow__more {
  margin: 1.6rem 0 0;
  font-size: 0.86rem;
  color: var(--muted-dark);
}

.page-faq .faq-flow__more a {
  color: var(--data-teal);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-flow__more a:hover {
  color: var(--orange);
}

/* 安卓 V4 */
.page-faq .faq-v4 {
  padding-top: clamp(2.4rem, 5vw, 3.8rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-v4__grid {
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
}

.page-faq .faq-v4__list {
  list-style: none;
  margin: 1.4rem 0 0;
  padding: 0;
  display: grid;
  gap: 0.75rem;
}

.page-faq .faq-v4__list li {
  padding: 0.7rem 0.85rem;
  background: var(--paper-2);
  border-left: 3px solid var(--link-paper);
  border-radius: 0 var(--radius-s) var(--radius-s) 0;
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--ink);
}

.page-faq .faq-v4__list strong {
  color: var(--link-paper);
}

.page-faq .faq-v4__note {
  margin: 1.2rem 0 1.4rem;
  font-size: 0.85rem;
  line-height: 1.8;
  color: var(--muted-light);
}

.page-faq .faq-v4__card {
  background: var(--graphite);
  border: 1px solid var(--titanium);
  border-radius: var(--radius-m);
  padding: var(--panel-pad);
  align-self: start;
}

.page-faq .faq-v4__card-label {
  margin: 0 0 0.9rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--orange);
}

.page-faq .faq-v4__spec {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-v4__spec li {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line-dark);
  font-size: 0.88rem;
  color: var(--mist);
}

.page-faq .faq-v4__spec li:last-child {
  border-bottom: none;
}

.page-faq .mono {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.04em;
  color: var(--data-teal);
}

/* 会员服务 */
.page-faq .faq-service {
  padding-top: clamp(2.4rem, 5vw, 3.8rem);
  padding-bottom: clamp(2.6rem, 6vw, 4.4rem);
}

.page-faq .faq-service__grid {
  display: grid;
  gap: clamp(1.4rem, 3.5vw, 2.4rem);
}

.page-faq .faq-service__lead .section__title {
  color: var(--mist);
}

.page-faq .faq-service__lead .lede {
  color: var(--muted-dark);
  line-height: 1.85;
}

.page-faq .faq-service__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 1.5rem;
}

.page-faq .faq-service__panel {
  background: var(--graphite);
  border: 1px solid var(--titanium);
  border-radius: var(--radius-m);
  padding: var(--panel-pad);
  align-self: start;
}

.page-faq .faq-service__list {
  margin: 0;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-service__row {
  display: grid;
  gap: 0.2rem;
  padding: 0.7rem 0;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .faq-service__row:last-child {
  border-bottom: none;
}

.page-faq .faq-service__row dt {
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  color: var(--muted-dark);
}

.page-faq .faq-service__row dd {
  margin: 0;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-service__row dd.mono {
  font-family: var(--font-mono);
  color: var(--orange-lift);
}

@media (min-width: 700px) {
  .page-faq .faq-v4__spec li {
    font-size: 0.92rem;
  }

  .page-faq .faq-service__row {
    grid-template-columns: 7.5rem minmax(0, 1fr);
    align-items: baseline;
    gap: 1rem;
  }

  .page-faq .steps {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.1rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: center;
  }

  .page-faq .faq-hero__figure {
    margin-left: 1rem;
  }

  .page-faq .faq-index__grid {
    grid-template-columns: 264px minmax(0, 1fr);
    gap: clamp(2rem, 4vw, 3.6rem);
    align-items: start;
  }

  .page-faq .faq-index__nav {
    position: sticky;
    top: var(--faq-sticky-top);
  }

  .page-faq .faq-compare__grid {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-faq .steps {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-v4__grid {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 0.65fr);
    align-items: start;
  }

  .page-faq .faq-service__grid {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 0.9fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__lead h1 {
    font-size: clamp(2.8rem, 5vw, 4.8rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}
<<<END>>>