.page-faq {
  --faq-ice: var(--ice-guide);
  --faq-ice-line: rgba(127, 200, 240, 0.28);
  --faq-rail: 232px;
  display: block;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 4vw, 36px) 0 clamp(28px, 5vw, 60px);
  background:
    radial-gradient(90% 130% at 92% -12%, rgba(127, 200, 240, 0.22), rgba(8, 19, 15, 0) 62%),
    linear-gradient(165deg, var(--ink-900) 0%, var(--ink-700) 62%, var(--ink-600) 100%);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(rgba(127, 200, 240, 0.07) 1px, transparent 1px),
    linear-gradient(90deg, rgba(127, 200, 240, 0.07) 1px, transparent 1px);
  background-size: 52px 52px;
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.9), transparent 88%);
  pointer-events: none;
}

.page-faq .faq-hero .breadcrumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--neutral-400);
  margin-bottom: clamp(20px, 4vw, 40px);
}

.page-faq .faq-hero .breadcrumbs a {
  color: var(--neutral-400);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.page-faq .faq-hero .breadcrumbs [aria-current="page"] {
  color: var(--faq-ice);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 48px);
}

.page-faq .faq-hero__title {
  margin: 12px 0 16px;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2rem, 5.6vw, 4rem);
  line-height: 1.06;
  letter-spacing: -0.025em;
  color: var(--paper);
  max-width: 20ch;
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  color: var(--paper-dim);
}

.page-faq .faq-hero__aside {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-status {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 12px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
}

.page-faq .faq-status__num {
  font-size: 13px;
  color: var(--faq-ice);
  letter-spacing: 0.02em;
}

.page-faq .faq-hero__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--neutral-400);
  max-width: 40ch;
}

/* ---------- 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 48px);
  padding-top: clamp(24px, 5vw, 56px);
  padding-bottom: clamp(40px, 7vw, 96px);
}

.page-faq .faq-rail__inner {
  padding: 14px 12px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(16, 36, 29, 0.65);
}

.page-faq .faq-rail .index-label {
  margin: 0 0 10px 6px;
  color: var(--neutral-400);
}

.page-faq .faq-rail .indexrail__link {
  position: relative;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: var(--r-sm);
  color: var(--neutral-400);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.25s var(--ease), background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-rail .indexrail__link .data-num {
  font-size: 12px;
  color: var(--faq-ice);
  opacity: 0.75;
}

.page-faq .faq-rail .indexrail__link:hover,
.page-faq .faq-rail .indexrail__link:focus-visible {
  color: var(--paper);
  background: var(--glass-layer);
}

.page-faq .faq-rail .indexrail__link.is-active {
  color: var(--paper);
  background: var(--glass-layer);
  border-left-color: var(--cyan-electric);
}

.page-faq .faq-content {
  display: flex;
  flex-direction: column;
  gap: clamp(36px, 6vw, 72px);
  min-width: 0;
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  scroll-margin-top: 92px;
  border-radius: var(--r-lg);
  padding: clamp(22px, 4vw, 42px);
}

.page-faq .faq-sec__head {
  max-width: 76ch;
  margin-bottom: clamp(20px, 3vw, 34px);
}

.page-faq .faq-sec__head .lede {
  color: inherit;
  opacity: 0.82;
  max-width: 66ch;
}

.page-faq .faq-figure {
  margin: 0 0 clamp(22px, 3vw, 34px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: rgba(8, 19, 15, 0.5);
}

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

.page-faq .faq-figure .media-caption {
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--neutral-400);
  border-top: 1px solid var(--line);
}

/* ---------- 编号步骤 ---------- */
.page-faq .steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-left: 2px solid var(--faq-ice-line);
  border-radius: var(--r-md);
  background: linear-gradient(180deg, rgba(16, 36, 29, 0.94), rgba(8, 19, 15, 0.94));
  transition: border-color 0.3s var(--ease), transform 0.3s var(--ease);
}

.page-faq .section--paper .steps__item {
  background: rgba(8, 19, 15, 0.9);
}

.page-faq .steps__item:hover {
  border-left-color: var(--faq-ice);
  transform: translateX(3px);
}

.page-faq .steps--tight .steps__item {
  padding: 13px 15px;
}

.page-faq .steps__num {
  display: block;
  font-family: var(--font-data);
  font-weight: 700;
  font-size: clamp(1.5rem, 3.4vw, 2.1rem);
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(127, 200, 240, 0.9);
  -webkit-text-stroke: 1px rgba(127, 200, 240, 0.5);
}

.page-faq .steps--tight .steps__num {
  font-size: clamp(1.15rem, 2.4vw, 1.5rem);
}

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

.page-faq .steps__title {
  margin: 4px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(1rem, 1.7vw, 1.15rem);
  font-weight: 700;
  color: var(--paper);
  letter-spacing: 0.01em;
}

.page-faq .steps__body p {
  margin: 0 0 8px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--paper-dim);
}

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

.page-faq .steps__body a {
  color: var(--cyan-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 206, 0.4);
}

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

.page-faq .steps__time {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  margin-top: 4px;
  padding: 5px 10px;
  border-radius: 999px;
  border: 1px solid var(--faq-ice-line);
  background: rgba(127, 200, 240, 0.08);
}

.page-faq .steps__time .index-label {
  color: var(--faq-ice);
  opacity: 0.9;
}

.page-faq .steps__time .data-num {
  font-size: 12.5px;
  color: var(--paper);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-sec .qna {
  display: grid;
  gap: 10px;
}

.page-faq .faq-sec .qna__item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(8, 19, 15, 0.55);
  overflow: hidden;
}

.page-faq .faq-sec .qna__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 15px 18px 15px 38px;
  position: relative;
  font-family: var(--font-display);
  font-size: clamp(0.98rem, 1.6vw, 1.08rem);
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  color: var(--paper);
  background: none;
  border: 0;
  cursor: pointer;
  transition: color 0.25s var(--ease);
}

.page-faq .faq-sec .qna__q::before {
  content: "";
  position: absolute;
  left: 16px;
  top: 22px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--neutral-400);
  transition: background 0.25s var(--ease), box-shadow 0.25s var(--ease);
}

.page-faq .faq-sec .qna__q[aria-expanded="true"]::before {
  background: var(--cyan-electric);
  box-shadow: 0 0 0 4px rgba(47, 227, 206, 0.18);
}

.page-faq .faq-sec .qna__q:hover {
  color: var(--cyan-electric);
}

.page-faq .faq-sec .qna__a {
  padding: 0 18px 16px 38px;
  border-top: 1px solid var(--line);
  margin-top: 0;
  padding-top: 14px;
  color: var(--paper-dim);
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-sec .qna__a p {
  margin: 0 0 8px;
}

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

.page-faq .faq-sec .qna__a a {
  color: var(--cyan-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 206, 0.4);
}

/* ---------- 流程小结 ---------- */
.page-faq .faq-flow {
  margin: clamp(24px, 3.5vw, 38px) 0 0;
  padding: clamp(16px, 2.6vw, 26px);
  border: 1px dashed var(--faq-ice-line);
  border-radius: var(--r-md);
  background: rgba(127, 200, 240, 0.05);
}

.page-faq .faq-flow svg {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-flow .media-caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--neutral-400);
}

/* ---------- 账号与会员中心 ---------- */
.page-faq .faq-account {
  align-items: start;
  gap: clamp(20px, 3vw, 32px);
}

.page-faq .faq-account__card {
  padding: clamp(18px, 2.6vw, 26px);
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: linear-gradient(160deg, rgba(8, 19, 15, 0.95), rgba(16, 36, 29, 0.9));
}

.page-faq .faq-account__lead {
  margin: 10px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 1.9vw, 1.25rem);
  font-weight: 600;
  line-height: 1.5;
  color: var(--faq-ice);
}

.page-faq .faq-account__card p {
  margin: 0 0 10px;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--paper-dim);
}

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

.page-faq .faq-subtitle {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(1.05rem, 2vw, 1.3rem);
  font-weight: 600;
  color: var(--paper);
  padding-left: 12px;
  border-left: 3px solid var(--faq-ice);
  line-height: 1.4;
}

/* ---------- 联系客服 ---------- */
.page-faq .faq-esc {
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

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

.page-faq .faq-list li {
  position: relative;
  padding: 12px 14px 12px 34px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(8, 19, 15, 0.55);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--paper-dim);
}

.page-faq .faq-list li::before {
  content: "";
  position: absolute;
  left: 14px;
  top: 20px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--faq-ice);
}

.page-faq .faq-list--check li {
  padding-left: 46px;
}

.page-faq .faq-list--check li::before {
  display: none;
}

.page-faq .faq-list--check .data-num {
  position: absolute;
  left: 14px;
  top: 13px;
  font-size: 13px;
  color: var(--faq-ice);
  letter-spacing: 0.04em;
}

.page-faq .faq-esc__foot {
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 14px 16px;
  border-left: 3px solid var(--cyan-deep);
  background: var(--glass-layer);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-faq .faq-esc__foot a {
  color: var(--cyan-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 206, 0.4);
}

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

/* ---------- 版本差异 ---------- */
.page-faq .table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: rgba(8, 19, 15, 0.55);
}

.page-faq .datatable {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 14.5px;
}

.page-faq .datatable caption {
  padding: 12px 16px;
  text-align: left;
  font-size: 12.5px;
  color: var(--neutral-400);
  border-bottom: 1px solid var(--line);
}

.page-faq .datatable th,
.page-faq .datatable td {
  padding: 13px 16px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  color: var(--paper-dim);
  line-height: 1.7;
}

.page-faq .datatable thead th {
  font-family: var(--font-display);
  font-size: 12.5px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--faq-ice);
  background: rgba(127, 200, 240, 0.07);
  white-space: nowrap;
}

.page-faq .datatable tbody th {
  color: var(--paper);
  font-weight: 600;
  white-space: nowrap;
}

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

.page-faq .datatable .data-num {
  color: var(--faq-ice);
}

.page-faq .faq-upgrade {
  margin-top: clamp(24px, 3.5vw, 38px);
}

.page-faq .faq-outro {
  margin: clamp(24px, 3.5vw, 36px) 0 0;
  padding-top: clamp(16px, 2.4vw, 24px);
  border-top: 1px solid var(--line);
  font-size: 15px;
  line-height: 1.8;
  color: var(--paper-dim);
}

.page-faq .faq-outro a {
  color: var(--cyan-electric);
  text-decoration: none;
  border-bottom: 1px solid rgba(47, 227, 206, 0.4);
}

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

/* ---------- 移动端 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-rail__inner {
    padding: 10px;
  }

  .page-faq .faq-rail .indexrail {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 4px;
    scrollbar-width: none;
  }

  .page-faq .faq-rail .indexrail::-webkit-scrollbar {
    display: none;
  }

  .page-faq .faq-rail .indexrail__link {
    flex: 0 0 auto;
    border-left: 0;
    border-bottom: 2px solid transparent;
    padding: 8px 12px;
    white-space: nowrap;
  }

  .page-faq .faq-rail .indexrail__link.is-active {
    border-left: 0;
    border-bottom-color: var(--cyan-electric);
  }

  .page-faq .faq-hero__title {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-rail__inner {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }
}

@media (max-width: 560px) {
  .page-faq .steps__item {
    grid-template-columns: minmax(0, 1fr);
    gap: 6px;
    padding: 14px 15px;
  }

  .page-faq .steps__num {
    font-size: 1.6rem;
  }

  .page-faq .faq-sec .qna__q {
    padding-left: 34px;
    padding-right: 14px;
  }

  .page-faq .faq-sec .qna__a {
    padding-left: 34px;
    padding-right: 14px;
  }

  .page-faq .steps__time {
    border-radius: var(--r-sm);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .steps__item,
  .page-faq .faq-rail .indexrail__link,
  .page-faq .faq-sec .qna__q::before {
    transition: none;
  }

  .page-faq .steps__item:hover {
    transform: none;
  }
}