.page-faq {
  --faq-index-w: 15.5rem;
  --faq-gap: clamp(1.75rem, 3.6vw, 3.25rem);
  position: relative;
  background: var(--ink);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumb {
  padding-block: clamp(1rem, 2.4vw, 1.6rem) 0;
}

.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .08em;
}

.page-faq .breadcrumb__sep {
  color: var(--line);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(1.5rem, 3.6vw, 2.5rem) clamp(2.25rem, 5vw, 3.75rem);
  border-bottom: 1px solid var(--line-soft);
  background:
    radial-gradient(120% 96% at 86% -14%, rgba(255, 107, 67, .18), transparent 62%),
    linear-gradient(180deg, var(--ink) 0%, var(--ink) 58%, var(--ink-2) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  opacity: .38;
  background-image:
    linear-gradient(rgba(30, 66, 88, .5) 1px, transparent 1px),
    linear-gradient(90deg, rgba(30, 66, 88, .5) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: linear-gradient(180deg, transparent, #000 45%, transparent);
  mask-image: linear-gradient(180deg, transparent, #000 45%, transparent);
}

.page-faq .faq-hero__slab {
  position: absolute;
  inset: -24% -18% auto -18%;
  height: 132%;
  pointer-events: none;
  transform: rotate(-7deg);
  background: linear-gradient(
    104deg,
    transparent 28%,
    rgba(255, 107, 67, .22) 40%,
    rgba(255, 154, 108, .12) 48%,
    transparent 60%
  );
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 clamp(.85rem, 1.8vw, 1.25rem);
  color: var(--shell);
  letter-spacing: .16em;
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(1.95rem, 5.4vw, 3.7rem);
  line-height: 1.1;
  letter-spacing: -.022em;
  color: var(--text);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  margin: clamp(1rem, 2.2vw, 1.5rem) 0 0;
  max-width: 40ch;
  font-size: var(--step-3);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-top: clamp(1.5rem, 3vw, 2.25rem);
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-hero__stat {
  display: grid;
  gap: .3rem;
  padding: .85rem 1rem 1rem;
  background: rgba(10, 25, 38, .82);
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: var(--step-3);
  letter-spacing: .04em;
  color: var(--coral);
}

.page-faq .faq-hero__label {
  font-size: var(--step-1);
  letter-spacing: .06em;
  color: var(--muted);
}

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

/* ---------- 线索主体 ---------- */
.page-faq .faq-body {
  padding-block: clamp(2.5rem, 5.5vw, 4.5rem);
}

.page-faq .faq-body__inner {
  display: grid;
  gap: var(--faq-gap);
}

.page-faq .faq-index__head {
  margin: 0 0 .85rem;
  color: var(--shell);
  letter-spacing: .16em;
}

.page-faq .faq-index__list {
  display: flex;
  gap: .5rem;
  list-style: none;
  margin: 0;
  padding: 0 0 .35rem;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index__list > li {
  flex: none;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: .75rem;
  min-width: 9.5rem;
  padding: .68rem .85rem;
  border: 1px solid var(--line-soft);
  background: var(--ink-2);
  color: var(--text);
  font-size: var(--step-2);
  text-decoration: none;
  transition: background-color .22s ease, border-color .22s ease, color .22s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: rgba(245, 175, 192, .16);
  border-color: var(--shell);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .08em;
  color: var(--shell);
}

.page-faq .faq-index__note {
  margin: 1rem 0 0;
  font-size: var(--step-1);
  line-height: 1.75;
  color: var(--muted);
}

.page-faq:has(#clue-network:target) .faq-index__link[href="#clue-network"],
.page-faq:has(#clue-device:target) .faq-index__link[href="#clue-device"],
.page-faq:has(#clue-account:target) .faq-index__link[href="#clue-account"],
.page-faq:has(#clue-blocker:target) .faq-index__link[href="#clue-blocker"] {
  background: var(--shell);
  border-color: var(--shell);
  color: var(--ink);
}

.page-faq:has(#clue-network:target) .faq-index__link[href="#clue-network"] .faq-index__count,
.page-faq:has(#clue-device:target) .faq-index__link[href="#clue-device"] .faq-index__count,
.page-faq:has(#clue-account:target) .faq-index__link[href="#clue-account"] .faq-index__count,
.page-faq:has(#clue-blocker:target) .faq-index__link[href="#clue-blocker"] .faq-index__count {
  color: rgba(10, 25, 38, .7);
}

/* ---------- 单条线索 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .clue {
  padding-block: clamp(1.5rem, 3.4vw, 2.5rem);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: 5.5rem;
}

.page-faq .clue:first-child {
  padding-top: 0;
  border-top: 0;
}

.page-faq:has(.clue:first-child:target) .clue:first-child {
  border-top: 0;
}

.page-faq .clue__head {
  display: grid;
  gap: .6rem;
  margin-bottom: 1.2rem;
}

.page-faq .clue__title {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: .7rem;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.35rem, 2.6vw, 1.95rem);
  letter-spacing: -.01em;
  line-height: 1.25;
}

.page-faq .clue__badge {
  flex: none;
  padding: .18rem .5rem .22rem;
  background: var(--shell);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .1em;
  transition: background-color .22s ease;
}

.page-faq .clue[data-active="true"] .clue__badge {
  background: var(--coral);
}

.page-faq .clue__lede {
  margin: 0;
  max-width: 44ch;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 手风琴 ---------- */
.page-faq .clue__list {
  display: grid;
  gap: .5rem;
}

.page-faq .qa {
  border: 1px solid var(--line-soft);
  background: var(--ink-2);
  transition: border-color .22s ease, background-color .22s ease;
}

.page-faq .qa:hover {
  border-color: rgba(255, 107, 67, .55);
}

.page-faq .qa[open] {
  border-color: var(--coral);
  background:
    linear-gradient(180deg, rgba(255, 107, 67, .07), transparent 58%),
    var(--ink-2);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
  padding: .95rem 1.05rem 1rem;
  cursor: pointer;
  list-style: none;
  font-size: var(--step-3);
  line-height: 1.55;
  color: var(--text);
}

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

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

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: .45rem;
  border: 1px solid var(--gold);
  transition: border-color .22s ease;
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  background: var(--gold);
  transform: translate(-50%, -50%);
  transition: transform .22s ease, opacity .22s ease, background-color .22s ease;
}

.page-faq .qa__mark::before {
  width: 8px;
  height: 1px;
}

.page-faq .qa__mark::after {
  width: 1px;
  height: 8px;
}

.page-faq .qa[open] .qa__mark {
  border-color: var(--coral);
}

.page-faq .qa[open] .qa__mark::before,
.page-faq .qa[open] .qa__mark::after {
  background: var(--coral);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .qa__a {
  padding: 0 1.05rem 1.2rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa__a p {
  margin: .9rem 0 0;
  max-width: 44ch;
  font-size: var(--step-2);
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 首次进入的准备 ---------- */
.page-faq .faq-prep {
  padding-block: clamp(2.25rem, 5vw, 4rem);
  background: var(--ink-2);
}

.page-faq .faq-prep__inner {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .prep-steps {
  counter-reset: prep;
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: 44rem;
}

.page-faq .prep-steps__item {
  counter-increment: prep;
  display: grid;
  grid-template-columns: 2.6rem minmax(0, 1fr);
  gap: 0;
  padding-block: 1.1rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .prep-steps__item:last-child {
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .prep-steps__item::before {
  content: counter(prep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: .08em;
  color: var(--coral);
  padding-top: .15rem;
}

.page-faq .prep-steps__title {
  margin: 0 0 .35rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-3);
  letter-spacing: -.005em;
}

.page-faq .prep-steps__text {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 打不开的顺序 ---------- */
.page-faq .faq-trouble {
  padding-block: clamp(2.25rem, 5vw, 4rem);
}

.page-faq .faq-trouble__inner {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .step-rail {
  counter-reset: rail;
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .step-rail__item {
  position: relative;
  counter-increment: rail;
  padding: 1.2rem 1.1rem 1.4rem;
  background: var(--ink);
}

.page-faq .step-rail__item::after {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 2px;
  background: linear-gradient(90deg, var(--coral), rgba(255, 107, 67, 0));
}

.page-faq .step-rail__item::before {
  content: "0" counter(rail);
  display: block;
  margin-bottom: .55rem;
  font-family: var(--font-mono);
  font-size: var(--step-1);
  letter-spacing: .14em;
  color: var(--coral);
}

.page-faq .step-rail__title {
  margin: 0 0 .45rem;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: var(--step-3);
}

.page-faq .step-rail__text {
  margin: 0;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .step-rail__watch {
  display: block;
  margin-top: .6rem;
  font-size: var(--step-1);
  line-height: 1.7;
  color: var(--mint);
}

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

/* ---------- 反馈 ---------- */
.page-faq .faq-feedback {
  padding-block: clamp(2.25rem, 5vw, 4rem);
  background: var(--ink-2);
}

.page-faq .faq-feedback__inner {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-feedback__grid {
  align-items: start;
}

.page-faq .faq-feedback__card {
  display: grid;
  align-content: start;
}

.page-faq .faq-feedback__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: .55rem;
  font-size: var(--step-2);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-feedback__list li {
  position: relative;
  padding-left: 1rem;
}

.page-faq .faq-feedback__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 1px;
  background: var(--coral);
}

.page-faq .faq-feedback__btn {
  margin-top: 1.2rem;
  justify-self: start;
}

.page-faq .faq-feedback__panel {
  padding: 1.25rem 1.15rem 1.4rem;
  border: 1px solid var(--line-soft);
  border-left: 2px solid var(--coral);
  background: rgba(10, 25, 38, .72);
}

.page-faq .faq-feedback__panel-head {
  margin: 0 0 .95rem;
  color: var(--shell);
  letter-spacing: .16em;
}

.page-faq .flow {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .flow__item {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .48rem .9rem;
  border: 1px solid var(--line-soft);
  background: var(--ink);
  font-size: var(--step-2);
  color: var(--text);
}

.page-faq .flow__item::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  background: var(--mint);
  transform: rotate(45deg);
}

.page-faq .flow__item:not(:last-child)::after {
  content: "";
  position: absolute;
  right: -.62rem;
  top: 50%;
  width: .42rem;
  height: .42rem;
  border-top: 1px solid var(--line);
  border-right: 1px solid var(--line);
  transform: translateY(-50%) rotate(45deg);
}

.page-faq .faq-feedback__note {
  margin: 1.1rem 0 0;
  max-width: 46ch;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 更新说明 ---------- */
.page-faq .faq-updates {
  padding-block: clamp(2.25rem, 5vw, 4rem);
}

.page-faq .faq-updates__inner {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-updates__grid {
  align-items: start;
}

.page-faq .faq-updates__copy p {
  margin: 0 0 1rem;
  max-width: 42ch;
  font-size: var(--step-3);
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-updates__copy p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-updates__aside {
  padding: 1.2rem 1.15rem 1.35rem;
  border: 1px solid var(--line-soft);
  background: var(--ink-2);
}

.page-faq .faq-updates__aside-head {
  margin: 0 0 .9rem;
  color: var(--gold);
  letter-spacing: .16em;
}

.page-faq .faq-updates__facts {
  margin: 0;
  display: grid;
  gap: 0;
}

.page-faq .faq-updates__fact {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: .68rem;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-updates__fact:first-child {
  border-top: 0;
}

.page-faq .faq-updates__fact dt {
  font-size: var(--step-2);
  color: var(--muted);
}

.page-faq .faq-updates__fact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: var(--step-2);
  letter-spacing: .06em;
  color: var(--text);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  padding-block: clamp(2.25rem, 5vw, 4rem) clamp(3rem, 6vw, 5rem);
  background: linear-gradient(180deg, var(--ink-2), var(--ink));
}

.page-faq .faq-contact__inner {
  display: grid;
  gap: clamp(1.5rem, 3vw, 2.25rem);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 1px;
  background: var(--line-soft);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-contact__item {
  padding: 1.25rem 1.15rem 1.5rem;
  background: rgba(10, 25, 38, .86);
}

.page-faq .faq-contact__tag {
  margin: 0 0 .75rem;
  color: var(--shell);
  letter-spacing: .1em;
}

.page-faq .faq-contact__value {
  margin: 0 0 .6rem;
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  letter-spacing: .04em;
  color: var(--gold);
  word-break: break-all;
}

.page-faq .faq-contact__text {
  margin: 0;
  max-width: 42ch;
  font-size: var(--step-2);
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .faq-contact__foot {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 860px) {
  .page-faq .step-rail {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
    align-items: center;
  }

  .page-faq .faq-hero__figure {
    align-self: stretch;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-body__inner {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 1.75rem;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: .45rem;
    padding-bottom: 0;
    overflow: visible;
  }

  .page-faq .faq-index__list > li {
    flex: none;
  }

  .page-faq .faq-index__link {
    width: 100%;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-stream {
    padding-right: clamp(0rem, 3vw, 3rem);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__mark,
  .page-faq .qa__mark::before,
  .page-faq .qa__mark::after,
  .page-faq .faq-index__link,
  .page-faq .clue__badge {
    transition: none;
  }
}
<<<END>>>