.page-faq {
  background: var(--ink);
  color: var(--frost);
  padding-bottom: 72px;
}

.page-faq .faq-hero {
  position: relative;
  padding: 36px 0 44px;
  background: linear-gradient(152deg, #0A1018 0%, #05070B 64%);
  border-bottom: 1px solid var(--steel);
  overflow: hidden;
}

.page-faq .faq-hero__glow {
  position: absolute;
  left: 0;
  top: 0;
  width: 78%;
  height: 2px;
  background: linear-gradient(90deg, var(--blue), var(--cyan) 52%, transparent);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
}

.page-faq .faq-hero__copy h1 {
  margin: 10px 0 16px;
  font-size: clamp(30px, 6.4vw, 58px);
  font-weight: 800;
  font-stretch: 92%;
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--frost);
}

.page-faq .faq-hero__copy .lead {
  max-width: 54ch;
  margin: 0 0 22px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

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

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 0;
  padding: 14px 0 0;
  list-style: none;
  border-top: 1px solid var(--steel);
  font-size: 13px;
  color: var(--mist);
}

.page-faq .faq-hero__facts li {
  display: flex;
  align-items: baseline;
  gap: 6px;
}

.page-faq .faq-hero__facts .num {
  font-family: var(--mono);
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--blue);
}

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

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--r);
  border: 1px solid var(--steel);
  object-fit: cover;
  filter: saturate(.9) contrast(1.04);
}

.page-faq .faq-hero__figure figcaption {
  margin-top: 10px;
  padding-left: 12px;
  border-left: 2px solid var(--cyan);
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-layout {
  padding-top: 8px;
}

.page-faq .faq-sec {
  padding: 48px 0 6px;
  scroll-margin-top: 84px;
}

.page-faq .faq-sec__head {
  max-width: 660px;
  margin-bottom: 26px;
}

.page-faq .faq-sec__head::before {
  content: "";
  display: block;
  width: 64px;
  height: 2px;
  margin-bottom: 16px;
  background: linear-gradient(90deg, var(--blue), var(--cyan));
}

.page-faq .faq-sec__head h2 {
  margin: 8px 0 12px;
  font-size: clamp(22px, 3.6vw, 32px);
  font-weight: 800;
  font-stretch: 92%;
  line-height: 1.3;
  color: var(--frost);
}

.page-faq .faq-sec__head .lead {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* 三步上手 */
.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--steel);
}

.page-faq .faq-steps__item {
  position: relative;
  padding: 24px 0 26px;
  border-bottom: 1px solid var(--steel);
}

.page-faq .faq-steps__no {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  margin-bottom: 14px;
  border: 1px solid var(--blue);
  border-radius: 50%;
  font-family: var(--mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  color: var(--blue);
}

.page-faq .faq-steps__item h3 {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--frost);
}

.page-faq .faq-steps__item p {
  margin: 0 0 14px;
  max-width: 46ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-steps__link {
  display: inline-block;
  font-family: var(--mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-steps__link:hover,
.page-faq .faq-steps__link:focus-visible {
  color: var(--frost);
  border-bottom-color: var(--cyan);
}

/* 常见疑问 */
.page-faq .faq-qa {
  border-top: 1px solid var(--steel);
}

.page-faq .faq-qa__item {
  border-bottom: 1px solid var(--steel);
}

.page-faq .faq-qa__item summary {
  position: relative;
  padding: 16px 38px 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--frost);
  transition: color var(--t-fast) var(--ease);
}

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

.page-faq .faq-qa__item summary::after {
  content: "+";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--mono);
  font-size: 17px;
  line-height: 1;
  color: var(--blue);
}

.page-faq .faq-qa__item[open] summary::after {
  content: "–";
  color: var(--cyan);
}

.page-faq .faq-qa__item summary:hover {
  color: var(--blue);
}

.page-faq .faq-qa__item p {
  margin: 0 0 18px;
  max-width: 66ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--mist);
}

/* 条款卡片 */
.page-faq .tcard-list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .tcard {
  border: 1px solid var(--steel);
  border-radius: var(--r);
  background: var(--carbon);
  transition: border-color var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}

.page-faq .tcard[data-open] {
  border-color: var(--brushed);
  box-shadow: 0 18px 40px -30px rgba(0, 0, 0, .95);
}

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

.page-faq .tcard__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  grid-template-areas:
    "no title chev"
    ". meta chev";
  align-items: center;
  gap: 4px 12px;
  width: 100%;
  padding: 15px 16px;
  border: 0;
  background: none;
  font: inherit;
  text-align: left;
  color: inherit;
  cursor: pointer;
}

.page-faq .tcard__no {
  grid-area: no;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: .08em;
  font-variant-numeric: tabular-nums;
  color: var(--blue);
  white-space: nowrap;
}

.page-faq .tcard__title {
  grid-area: title;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--frost);
}

.page-faq .tcard__meta {
  grid-area: meta;
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
}

.page-faq .tcard__ver {
  color: var(--amber);
}

.page-faq .tcard__chev {
  grid-area: chev;
  width: 9px;
  height: 9px;
  border-right: 1px solid var(--mist);
  border-bottom: 1px solid var(--mist);
  transform: rotate(45deg);
  transition: transform var(--t-mid) var(--ease), border-color var(--t-fast) linear;
}

.page-faq .tcard[data-open] .tcard__chev {
  transform: rotate(-135deg);
  border-color: var(--cyan);
}

.page-faq .tcard__panel {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-mid) var(--ease);
}

.page-faq .tcard[data-open] .tcard__panel {
  grid-template-rows: 1fr;
}

.page-faq .tcard__body {
  overflow: hidden;
  min-height: 0;
  padding: 0 16px;
}

.page-faq .tcard[data-open] .tcard__body {
  padding-bottom: 18px;
}

.page-faq .tcard__body p {
  margin: 0 0 10px;
  padding-top: 14px;
  border-top: 1px solid var(--steel);
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--frost);
}

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

.page-faq .tcard__body li {
  position: relative;
  margin-bottom: 7px;
  padding-left: 16px;
  font-size: 13.5px;
  line-height: 1.78;
  color: var(--mist);
}

.page-faq .tcard__body li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .76em;
  width: 8px;
  height: 1px;
  background: var(--blue);
}

/* 版本 */
.page-faq .faq-ver {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-ver__card {
  padding: 18px 18px 20px;
  border: 1px solid var(--steel);
  border-left: 2px solid var(--amber);
  border-radius: var(--r);
  background: var(--carbon);
}

.page-faq .faq-ver__card--old {
  border-left-color: var(--blue);
}

.page-faq .faq-ver__no {
  margin: 0 0 4px;
  font-family: var(--mono);
  font-size: 22px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: .04em;
  color: var(--amber);
}

.page-faq .faq-ver__card--old .faq-ver__no {
  color: var(--blue);
}

.page-faq .faq-ver__date {
  margin: 0 0 10px;
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
}

.page-faq .faq-ver__txt {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .faq-ver__foot {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 20px;
  margin-top: 20px;
  padding-top: 18px;
  border-top: 1px solid var(--steel);
}

.page-faq .faq-ver__foot p {
  flex: 1 1 320px;
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

/* 适配 */
.page-faq .faq-adapt__figure {
  margin: 0 0 20px;
}

.page-faq .faq-adapt__figure img {
  display: block;
  width: 100%;
  height: auto;
  border: 1px solid var(--steel);
  border-radius: var(--r);
  object-fit: cover;
  filter: saturate(.85) contrast(1.05);
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--steel);
  border-radius: var(--r);
  background: var(--carbon);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 13.5px;
}

.page-faq .faq-table thead th {
  padding: 11px 14px;
  text-align: left;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--mist);
  background: var(--steel);
  white-space: nowrap;
}

.page-faq .faq-table td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--steel);
  line-height: 1.65;
  color: var(--mist);
}

.page-faq .faq-table td:first-child {
  color: var(--frost);
  font-weight: 700;
  white-space: nowrap;
}

.page-faq .faq-table td:nth-child(3) {
  color: var(--cyan);
}

.page-faq .faq-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-table tbody tr:hover td {
  background: rgba(127, 182, 217, .06);
}

/* 通知 */
.page-faq .faq-notice {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-notice__item {
  padding: 20px 18px 22px;
  border: 1px solid var(--steel);
  border-radius: var(--r);
  background: var(--carbon);
}

.page-faq .faq-notice__item h3 {
  margin: 12px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--frost);
}

.page-faq .faq-notice__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.82;
  color: var(--mist);
}

.page-faq .faq-notice__foot {
  margin: 20px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--mist);
}

.page-faq .faq-notice__foot a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid var(--brushed);
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.page-faq .faq-notice__foot a:hover,
.page-faq .faq-notice__foot a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* 章节目录 */
.page-faq .faq-toc {
  display: none;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--steel);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-toc__list a {
  position: relative;
  display: block;
  padding: 7px 0 7px 16px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--mist);
  text-decoration: none;
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-toc__list a::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 6px;
  height: 1px;
  background: var(--brushed);
  transform: translateY(-50%);
  transition: width var(--t-fast) var(--ease), background var(--t-fast) var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a:focus-visible {
  color: var(--frost);
}

.page-faq .faq-toc__list a:hover::before,
.page-faq .faq-toc__list a:focus-visible::before {
  width: 12px;
  background: var(--blue);
}

.page-faq .faq-toc__hint {
  margin: 16px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--steel);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mist);
}

@media (min-width: 720px) {
  .page-faq .faq-hero__facts {
    gap: 10px 32px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 28px;
    border-top: 0;
  }

  .page-faq .faq-steps__item {
    padding: 26px 0 22px;
    border-top: 1px solid var(--steel);
  }

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

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

  .page-faq .tcard__head {
    grid-template-columns: auto minmax(0, 1fr) auto auto;
    grid-template-areas: "no title meta chev";
    gap: 10px 18px;
    padding: 16px 20px;
  }

  .page-faq .tcard__body {
    padding: 0 20px;
  }

  .page-faq .tcard__body p {
    padding-top: 16px;
  }

  .page-faq .tcard__body li {
    font-size: 14px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 56px 0 64px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
    align-items: end;
    gap: 56px;
  }

  .page-faq .faq-hero__facts {
    gap: 10px 36px;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 214px;
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-toc {
    display: block;
    position: sticky;
    top: 32px;
    align-self: start;
    padding-top: 54px;
  }

  .page-faq .faq-sec {
    scroll-margin-top: 24px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-hero__grid {
    gap: 72px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: .01ms !important;
    animation-duration: .01ms !important;
  }
}