.page-faq {
  --faq-line: rgba(169, 136, 76, .42);
  --faq-facet: #12224A;
  --faq-panel: #0B1428;
  --faq-hair: rgba(169, 136, 76, .18);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 36px 0 0;
}

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

.page-faq .faq-hero__copy .eyebrow {
  margin-top: 22px;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--ice);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ice);
  opacity: .86;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__visual {
  margin: 0;
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  background: linear-gradient(150deg, var(--deep), var(--ink) 68%);
  box-shadow: var(--hard-shadow);
  overflow: hidden;
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 52px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    align-items: center;
    gap: 56px;
  }

  .page-faq .faq-hero h1 {
    font-size: 46px;
  }

  .page-faq .faq-hero__lead {
    font-size: 17px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero h1 {
    font-size: 52px;
  }
}

/* ---------- 问答总览 ---------- */
.page-faq .faq-board__head {
  max-width: 62ch;
  margin-bottom: 32px;
}

.page-faq .faq-board__intro {
  margin: 16px 0 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-switch {
  position: relative;
}

.page-faq .faq-switch__input {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  border: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-tabs {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 26px;
}

.page-faq .faq-tab {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 10px;
  padding: 14px 15px;
  border: 2px solid var(--faq-facet);
  border-radius: var(--radius);
  background: var(--faq-panel);
  color: var(--mist);
  cursor: pointer;
  transition: border-color .22s ease, background .22s ease, transform .22s ease, box-shadow .22s ease;
}

.page-faq .faq-tab__name {
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--ice);
}

.page-faq .faq-tab__count {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  color: var(--gold);
  padding: 1px 7px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  background: rgba(5, 10, 24, .65);
}

.page-faq .faq-tab:hover {
  border-color: var(--gold-line);
}

.page-faq #cat-login:checked ~ .faq-tabs label[for="cat-login"],
.page-faq #cat-browser:checked ~ .faq-tabs label[for="cat-browser"],
.page-faq #cat-record:checked ~ .faq-tabs label[for="cat-record"],
.page-faq #cat-support:checked ~ .faq-tabs label[for="cat-support"] {
  border-color: var(--jade);
  background: linear-gradient(140deg, rgba(35, 209, 139, .18), rgba(18, 34, 74, .94));
  box-shadow: var(--hard-shadow);
  transform: translate(-2px, -2px);
}

.page-faq #cat-login:focus-visible ~ .faq-tabs label[for="cat-login"],
.page-faq #cat-browser:focus-visible ~ .faq-tabs label[for="cat-browser"],
.page-faq #cat-record:focus-visible ~ .faq-tabs label[for="cat-record"],
.page-faq #cat-support:focus-visible ~ .faq-tabs label[for="cat-support"] {
  outline: 2px solid var(--jade);
  outline-offset: 3px;
}

.page-faq .faq-panel {
  display: none;
}

.page-faq #cat-login:checked ~ .faq-panels > #panel-login,
.page-faq #cat-browser:checked ~ .faq-panels > #panel-browser,
.page-faq #cat-record:checked ~ .faq-panels > #panel-record,
.page-faq #cat-support:checked ~ .faq-panels > #panel-support {
  display: block;
}

.page-faq .faq-panel__hint {
  margin: 0 0 20px;
  padding: 14px 16px;
  border-left: 3px solid var(--jade);
  border-radius: 0 var(--radius) var(--radius) 0;
  background: rgba(35, 209, 139, .07);
  font-size: 15px;
  line-height: 1.75;
  color: var(--ice);
}

/* ---------- 手风琴条目 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 10px;
  max-width: 940px;
  counter-reset: qa;
}

.page-faq .qa {
  counter-increment: qa;
  border: 2px solid var(--faq-facet);
  border-left: 4px solid var(--faq-facet);
  border-radius: var(--radius);
  background: var(--faq-panel);
  transition: border-color .2s ease, background .2s ease;
}

.page-faq .qa:hover {
  border-color: var(--gold-line);
  border-left-color: var(--gold-line);
}

.page-faq .qa[open] {
  border-left-color: var(--jade);
  background: linear-gradient(180deg, rgba(18, 34, 74, .92), rgba(11, 20, 40, .96));
  box-shadow: inset 3px 0 14px rgba(35, 209, 139, .14);
}

.page-faq .qa__head {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 14px;
  list-style: none;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ice);
}

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

.page-faq .qa__head::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.35;
  color: var(--jade);
}

.page-faq .qa[open] .qa__head::after {
  content: "−";
  color: var(--gold);
}

.page-faq .qa__idx {
  flex: 0 0 auto;
  padding-top: 2px;
}

.page-faq .qa__idx::before {
  content: counter(qa, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .04em;
  color: var(--gold);
}

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

.page-faq .qa__body {
  padding: 0 14px 14px;
  border-top: 1px solid var(--faq-hair);
  margin-top: 2px;
  padding-top: 12px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .qa__body p {
  margin: 0;
}

@media (min-width: 640px) {
  .page-faq .faq-tab {
    padding: 16px 18px;
  }

  .page-faq .faq-tab__name {
    font-size: 16px;
  }

  .page-faq .qa__head {
    gap: 14px;
    padding: 16px 20px;
    font-size: 17px;
  }

  .page-faq .qa__body {
    padding: 12px 24px 18px 58px;
    font-size: 16px;
  }
}

@media (min-width: 800px) {
  .page-faq .faq-tabs {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
    margin-bottom: 32px;
  }

  .page-faq .faq-panel__hint {
    padding: 16px 20px;
    font-size: 16px;
  }
}

/* ---------- 换设备流程 ---------- */
.page-faq .faq-flow {
  border-top: 2px solid var(--faq-hair);
  padding-top: 40px;
}

.page-faq .faq-flow__grid {
  display: grid;
  gap: 34px;
}

.page-faq .faq-flow__main .section-title {
  margin-top: 12px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-step {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 16px;
  border: 2px solid var(--faq-facet);
  border-radius: var(--radius);
  background: var(--faq-panel);
}

.page-faq .faq-step__num {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  background: rgba(22, 48, 122, .34);
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 500;
  color: var(--gold);
}

.page-faq .faq-step__text h3 {
  margin: 2px 0 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ice);
}

.page-faq .faq-step__text p {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-flow__figure {
  margin: 0 0 20px;
  border: 2px solid var(--faq-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(18, 34, 74, .9), rgba(5, 10, 24, .95));
  overflow: hidden;
}

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

.page-faq .faq-pitfall {
  padding: 18px;
  border: 2px solid var(--faq-line);
  border-radius: var(--radius);
  background: linear-gradient(160deg, rgba(22, 48, 122, .5), rgba(11, 20, 40, .95));
}

.page-faq .faq-pitfall h3 {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--gold);
}

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

.page-faq .faq-pitfall li {
  position: relative;
  padding-left: 16px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-pitfall li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--jade);
}

.page-faq .faq-pitfall strong {
  display: block;
  color: var(--ice);
  font-weight: 700;
}

.page-faq .faq-pitfall__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-hair);
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gold);
}

@media (min-width: 900px) {
  .page-faq .faq-flow {
    padding-top: 56px;
  }

  .page-faq .faq-flow__grid {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: start;
    gap: 48px;
  }

  .page-faq .faq-step {
    padding: 20px;
  }

  .page-faq .faq-pitfall {
    padding: 22px;
  }
}

/* ---------- 兜底区块 ---------- */
.page-faq .faq-end__panel {
  display: grid;
  gap: 28px;
  padding: 24px;
  border: 2px solid var(--gold-line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(35, 209, 139, .12), transparent 58%),
    linear-gradient(160deg, rgba(22, 48, 122, .55), rgba(5, 10, 24, .98));
  box-shadow: var(--hard-shadow);
}

.page-faq .faq-end__copy .section-title {
  margin-top: 12px;
}

.page-faq .faq-checklist {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-checklist li {
  padding: 13px 15px;
  border-left: 3px solid var(--jade);
  background: rgba(5, 10, 24, .55);
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-checklist__k {
  display: block;
  margin-bottom: 2px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--ice);
}

.page-faq .faq-end__lead {
  margin: 20px 0 0;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-end__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 22px;
}

.page-faq .faq-end__contact {
  padding: 20px;
  border: 2px solid var(--faq-facet);
  border-radius: var(--radius);
  background: rgba(11, 20, 40, .78);
}

.page-faq .faq-end__contact h3 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 900;
  letter-spacing: -.01em;
  color: var(--ice);
}

.page-faq .faq-contact {
  margin: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 2px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-hair);
}

.page-faq .faq-contact__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact dt {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-faq .faq-contact dd {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--gold);
  word-break: break-word;
}

.page-faq .faq-end__note {
  margin: 18px 0 0;
  font-size: 13px;
  line-height: 1.8;
  color: var(--mist);
}

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

.page-faq .faq-link:hover {
  color: var(--gold);
}

@media (min-width: 900px) {
  .page-faq .faq-end__panel {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, .82fr);
    align-items: start;
    gap: 44px;
    padding: 40px;
  }

  .page-faq .faq-end__contact {
    padding: 26px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-tab,
  .page-faq .qa {
    transition: none;
  }

  .page-faq #cat-login:checked ~ .faq-tabs label[for="cat-login"],
  .page-faq #cat-browser:checked ~ .faq-tabs label[for="cat-browser"],
  .page-faq #cat-record:checked ~ .faq-tabs label[for="cat-record"],
  .page-faq #cat-support:checked ~ .faq-tabs label[for="cat-support"] {
    transform: none;
  }
}