.page-faq {
  --faq-lead: 15px;
  --faq-meta: 11px;
}

/* ============ 首屏 ============ */
.page-faq .faq-open {
  position: relative;
  overflow: hidden;
  padding: 24px 0 34px;
  color: var(--mist);
  background-color: var(--sea-deep);
  background-image:
    linear-gradient(rgba(184, 238, 231, .07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(184, 238, 231, .07) 1px, transparent 1px),
    radial-gradient(120% 130% at 86% -12%, rgba(18, 214, 192, .22) 0%, transparent 58%),
    linear-gradient(158deg, #071E31 0%, #0B2E4A 58%, #103B5B 100%);
  background-size: 46px 46px, 46px 46px, 100% 100%, 100% 100%;
  background-repeat: repeat, repeat, no-repeat, no-repeat;
}

.page-faq .faq-open .crumbs,
.page-faq .faq-open .crumbs a {
  color: rgba(184, 238, 231, .74);
}

.page-faq .faq-open .crumbs a:hover {
  color: var(--signal);
}

.page-faq .faq-open .crumbs li[aria-current="page"] {
  color: var(--mist);
}

.page-faq .faq-open-body {
  display: grid;
  gap: 24px;
  margin-top: 20px;
}

.page-faq .faq-open-lead .label {
  display: inline-block;
  color: var(--signal);
}

.page-faq .faq-open-lead h1 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(25px, 6.4vw, 42px);
  line-height: 1.22;
  letter-spacing: -0.02em;
  color: #FFFFFF;
}

.page-faq .faq-open-lead > p:last-child {
  margin: 0;
  max-width: 40em;
  font-size: 16px;
  line-height: 1.75;
  color: rgba(242, 245, 247, .84);
}

.page-faq .faq-open-facts {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  padding: 1px;
  border: 1px solid rgba(184, 238, 231, .22);
  border-radius: var(--r-m);
  background: rgba(184, 238, 231, .22);
  overflow: hidden;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-width: 0;
  padding: 13px 10px;
  background: rgba(7, 30, 49, .62);
}

.page-faq .faq-fact dt {
  font-family: var(--font-mono);
  font-size: 10px;
  line-height: 1.4;
  letter-spacing: .04em;
  color: rgba(184, 238, 231, .8);
}

.page-faq .faq-fact dd {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--signal);
}

/* ============ 六篇总表 ============ */
.page-faq .faq-index-head {
  max-width: 60ch;
  margin-bottom: 22px;
}

.page-faq .faq-index-head h2,
.page-faq .faq-guide-head h2,
.page-faq .faq-guide-lead h2,
.page-faq .faq-next h2 {
  margin: 10px 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 4.6vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.015em;
  color: var(--ink);
}

.page-faq .faq-index-head p:last-child,
.page-faq .faq-guide-head p:last-child,
.page-faq .faq-guide-lead p {
  margin: 0;
  font-size: var(--faq-lead);
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-guide-lead p + p {
  margin-top: 12px;
}

.page-faq .faq-cover {
  margin: 0 0 24px;
  border-radius: var(--r-m);
  overflow: hidden;
}

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

.page-faq .faq-cover .media-cap,
.page-faq .faq-shot .media-cap {
  font-family: var(--font-mono);
  font-size: var(--faq-meta);
  letter-spacing: .05em;
  color: var(--slate);
}

.page-faq .faq-cards {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 14px;
}

.page-faq .faq-cards > li {
  display: flex;
}

.page-faq .faq-card {
  display: flex;
  flex-direction: column;
  gap: 9px;
  flex: 1 1 auto;
  width: 100%;
  min-width: 0;
  box-sizing: border-box;
  padding: 18px 18px 16px;
  text-decoration: none;
  color: inherit;
  border-radius: var(--r-m);
  background: var(--cream);
}

.page-faq .faq-card-num {
  align-self: flex-start;
  padding: 2px 7px;
  border: 1px solid var(--line);
  border-radius: var(--r-s);
  background: #FFFFFF;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--sea-blue);
}

.page-faq .faq-card .label {
  align-self: flex-start;
}

.page-faq .faq-card-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.5;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq .faq-card-desc {
  flex: 1 1 auto;
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--slate);
}

.page-faq .faq-card-meta {
  padding-top: 10px;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: var(--faq-meta);
  letter-spacing: .05em;
  color: var(--slate);
}

/* ============ 单篇详解 ============ */
.page-faq .faq-guide-grid {
  display: grid;
  gap: 22px;
}

.page-faq .faq-guide-lead h2 {
  margin-top: 10px;
}

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

.page-faq .faq-shot {
  margin: 0 0 22px;
  border-radius: var(--r-m);
  overflow: hidden;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-step {
  position: relative;
  padding: 1px 0 18px 34px;
}

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 11px;
  top: 26px;
  bottom: 0;
  width: 2px;
  background: var(--line);
}

.page-faq .faq-step:last-child::before {
  display: none;
}

.page-faq .faq-step-num {
  position: absolute;
  left: 0;
  top: 2px;
  display: grid;
  place-items: center;
  width: 24px;
  height: 24px;
  border: 2px solid var(--signal);
  border-radius: 50%;
  background: var(--shoal);
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 700;
  line-height: 1;
  color: var(--sea-blue);
}

.page-faq .faq-step[data-state="current"] .faq-step-num {
  border-color: var(--coral);
  background: var(--coral);
  color: #FFFFFF;
}

.page-faq .faq-step-title {
  margin: 0 0 5px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-step-body {
  margin: 0;
  font-size: var(--faq-lead);
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-guide .notice {
  margin: 14px 0 0;
}

/* ============ 换设备版块 ============ */
.page-faq .faq-guide--alt {
  background: var(--mist);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-guide--alt .faq-guide-head {
  max-width: 64ch;
  margin-bottom: 24px;
}

.page-faq .faq-relogin-grid {
  display: grid;
  gap: 24px;
}

.page-faq .faq-relogin-main {
  min-width: 0;
}

.page-faq .faq-relogin-side {
  display: grid;
  gap: 16px;
  align-content: start;
  min-width: 0;
}

.page-faq .faq-prep {
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--sea-blue);
  border-radius: var(--r-m);
  background: var(--cream);
}

.page-faq .faq-side-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
}

.page-faq .faq-prep-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-prep-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-prep-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 9px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--sea-blue);
}

.page-faq .faq-check {
  padding: 18px 18px 16px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--signal);
  border-radius: var(--r-m);
  background: var(--cream);
}

.page-faq .faq-check-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 15px;
  line-height: 1.5;
  color: var(--ink);
}

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

.page-faq .faq-check-list li {
  position: relative;
  padding-left: 26px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 4px;
  width: 16px;
  height: 16px;
  border: 1.5px solid var(--signal);
  border-radius: 4px;
  background: rgba(18, 214, 192, .16);
}

.page-faq .faq-check-list li::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 8px;
  width: 7px;
  height: 4px;
  border-left: 2px solid var(--sea-blue);
  border-bottom: 2px solid var(--sea-blue);
  transform: rotate(-45deg);
}

.page-faq .faq-aside-note {
  padding: 18px 18px 16px;
  border: 1px dashed var(--line);
  border-radius: var(--r-m);
  background: rgba(255, 255, 255, .6);
}

.page-faq .faq-aside-note .label {
  display: inline-block;
  margin-bottom: 10px;
}

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

.page-faq .faq-trap-list li {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-trap-list strong {
  display: block;
  font-family: var(--font-display);
  font-weight: 800;
  color: var(--ink);
}

/* ============ 折叠问答 ============ */
.page-faq .faq-folds {
  display: grid;
  gap: 12px;
  max-width: 860px;
  margin-top: 4px;
}

.page-faq .faq-fold {
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--cream);
  overflow: hidden;
}

.page-faq .faq-fold[open] {
  border-color: var(--signal);
  box-shadow: var(--sh-1);
}

.page-faq .faq-fold .fold-sum {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 16px;
  line-height: 1.55;
  color: var(--ink);
}

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

.page-faq .faq-fold .fold-mark {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--coral);
}

.page-faq .faq-fold .fold-body {
  padding: 0 18px 18px 42px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-fold .fold-body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-folds a {
  font-weight: 700;
  color: var(--sea-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
  padding-bottom: 1px;
}

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

.page-faq .faq-guide-head {
  max-width: 64ch;
  margin-bottom: 22px;
}

/* ============ 底部路标 ============ */
.page-faq .faq-next-lede {
  max-width: 46em;
  margin: 0 0 20px;
  font-size: var(--faq-lead);
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-next-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-next-card {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 20px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-m);
  background: var(--cream);
  text-decoration: none;
  color: inherit;
  transition: transform .24s var(--ease), box-shadow .24s var(--ease), border-color .24s var(--ease);
}

.page-faq .faq-next-card--signal {
  border-left: 4px solid var(--signal);
}

.page-faq .faq-next-card--coral {
  border-left: 4px solid var(--coral);
}

.page-faq .faq-next-card--signal:hover {
  transform: translateY(-4px);
  border-color: var(--signal);
  box-shadow: var(--sh-2);
}

.page-faq .faq-next-card--coral:hover {
  transform: translateY(-4px);
  border-color: var(--coral);
  box-shadow: var(--sh-2);
}

.page-faq .faq-next-card .label {
  align-self: flex-start;
}

.page-faq .faq-next-card strong {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 18px;
  line-height: 1.42;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-next-desc {
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-faq .faq-next-arrow {
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--sea-blue);
  transition: transform .24s var(--ease);
}

.page-faq .faq-next-card:hover .faq-next-arrow {
  transform: translateX(5px);
}

.page-faq .faq-next-note {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-next-note a {
  font-weight: 700;
  color: var(--sea-blue);
  text-decoration: none;
  border-bottom: 2px solid var(--signal);
  padding-bottom: 1px;
}

.page-faq .faq-next-note a:hover {
  color: var(--coral);
  border-bottom-color: var(--coral);
}

/* ============ 响应式 ============ */
@media (min-width: 640px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-open {
    padding: 30px 0 42px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-open-body {
    grid-template-columns: minmax(0, 1.7fr) minmax(250px, 1fr);
    gap: 48px;
    align-items: end;
    margin-top: 26px;
  }

  .page-faq .faq-fact {
    padding: 16px 14px;
  }

  .page-faq .faq-fact dd {
    font-size: 24px;
  }

  .page-faq .faq-guide-grid {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-guide-lead {
    position: sticky;
    top: calc(var(--head-h) + 22px);
  }

  .page-faq .faq-relogin-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 44px;
    align-items: start;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-cards {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-cards > li:nth-child(2),
  .page-faq .faq-cards > li:nth-child(5) {
    transform: translateY(14px);
  }
}

@media (max-width: 420px) {
  .page-faq .faq-open-facts {
    grid-template-columns: minmax(0, 1fr);
  }

  .page-faq .faq-fact {
    flex-direction: row;
    align-items: baseline;
    justify-content: space-between;
    gap: 10px;
  }

  .page-faq .faq-step {
    padding-left: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-next-card,
  .page-faq .faq-next-arrow {
    transition: none;
  }

  .page-faq .faq-cards > li:nth-child(2),
  .page-faq .faq-cards > li:nth-child(5) {
    transform: none;
  }
}