.page-faq {
  --faq-edge: 12px;
  --faq-soft: rgba(18, 41, 74, 0.55);
  --faq-soft-2: rgba(10, 23, 48, 0.45);
  display: block;
  padding: 0 0 80px;
  color: var(--paper);
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 var(--gutter);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 24px 0 36px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 96px;
  height: 2px;
  background: var(--cyan);
}

.page-faq .faq-hero__flag {
  margin: 0 0 18px;
  font-size: 11px;
  letter-spacing: 0.24em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-title);
  font-size: clamp(30px, 7.4vw, 54px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.012em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 30px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats li {
  display: flex;
  align-items: baseline;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__num {
  font-size: 22px;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .doc-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 26px;
  padding-top: 30px;
}

@media (min-width: 900px) {
  .page-faq .doc-shell {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .doc-rail {
    position: sticky;
    top: calc(var(--header-h) + 22px);
  }
}

/* ---------- 锚点索引 ---------- */
.page-faq .doc-rail {
  padding: 16px 14px 18px;
  border: 1px solid var(--line);
  background:
    radial-gradient(140% 100% at 100% 0%, rgba(57, 230, 216, 0.09), transparent 64%),
    linear-gradient(180deg, var(--faq-soft), var(--faq-soft-2));
  clip-path: polygon(0 0, calc(100% - var(--faq-edge)) 0, 100% var(--faq-edge), 100% 100%, 0 100%);
}

.page-faq .doc-rail__label {
  margin: 0 0 12px;
  font-size: 10px;
  letter-spacing: 0.24em;
  color: var(--muted);
}

.page-faq .doc-rail__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  grid-template-columns: 1fr;
  gap: 2px;
}

@media (min-width: 560px) and (max-width: 899px) {
  .page-faq .doc-rail__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.page-faq .doc-rail__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid transparent;
  color: var(--paper);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .doc-rail__list a .mono {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .doc-rail__list a:hover,
.page-faq .doc-rail__list a:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(57, 230, 216, 0.08);
}

.page-faq .doc-rail__list a:hover .mono,
.page-faq .doc-rail__list a:focus-visible .mono {
  color: var(--cyan);
}

.page-faq .doc-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 章节 ---------- */
.page-faq .doc-section {
  padding: 4px 0 48px;
  scroll-margin-top: calc(var(--header-h) + 18px);
}

.page-faq .doc-section + .doc-section {
  border-top: 1px solid var(--line);
  padding-top: 40px;
}

.page-faq .doc-section__coord {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan);
}

.page-faq .doc-section h2 {
  margin: 0 0 14px;
  font-family: var(--font-title);
  font-size: clamp(24px, 5.2vw, 34px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: -0.008em;
  color: var(--paper);
}

.page-faq .doc-section__intro {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

.page-faq .doc-section__foot {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .doc-section__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 230, 216, 0.4);
}

.page-faq .doc-section__foot a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 配图 ---------- */
.page-faq .doc-figure {
  margin: 26px 0 0;
}

.page-faq .doc-figure .figure__frame {
  overflow: hidden;
  border: 1px solid var(--line);
  background: var(--deep);
}

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

.page-faq .doc-figure .figure__cap {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--muted);
}

@media (min-width: 760px) {
  .page-faq .doc-figure {
    max-width: 620px;
    margin-left: auto;
  }

  .page-faq .doc-figure--tall {
    max-width: 320px;
    margin-left: auto;
  }
}

/* ---------- 分类卡片 ---------- */
.page-faq .doc-index-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-top: 24px;
}

@media (min-width: 620px) {
  .page-faq .doc-index-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1080px) {
  .page-faq .doc-index-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .doc-card {
  position: relative;
  display: block;
  padding: 16px 18px 15px 18px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--cyan);
  background: linear-gradient(160deg, rgba(18, 41, 74, 0.72), rgba(10, 23, 48, 0.5));
  color: var(--paper);
  text-decoration: none;
  clip-path: polygon(0 0, calc(100% - var(--faq-edge)) 0, 100% var(--faq-edge), 100% 100%, 0 100%);
  transition: transform 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .doc-card:nth-child(3n + 2) {
  border-left-color: var(--purple);
}

.page-faq .doc-card:nth-child(3n + 3) {
  border-left-color: var(--orange);
}

.page-faq .doc-card:hover,
.page-faq .doc-card:focus-visible {
  transform: translateY(-2px);
  border-color: rgba(57, 230, 216, 0.6);
  background: linear-gradient(160deg, rgba(24, 54, 95, 0.88), rgba(12, 28, 56, 0.72));
}

.page-faq .doc-card__num {
  display: block;
  margin-bottom: 8px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .doc-card__title {
  display: block;
  margin-bottom: 7px;
  font-family: var(--font-title);
  font-size: 19px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .doc-card__desc {
  display: block;
  font-size: 13px;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .doc-card__count {
  display: block;
  margin-top: 12px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 权益表格 ---------- */
.page-faq .member-table {
  width: 100%;
  margin-top: 26px;
  border-collapse: collapse;
  font-size: 14px;
  color: var(--paper);
}

.page-faq .member-table__cap {
  caption-side: top;
  padding-bottom: 12px;
  text-align: left;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .member-table thead th {
  padding: 12px 14px;
  text-align: left;
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.14em;
  color: var(--muted);
  background: rgba(18, 41, 74, 0.5);
  border-bottom: 1px solid var(--line);
}

.page-faq .member-table th,
.page-faq .member-table td {
  padding: 15px 14px;
  text-align: left;
  vertical-align: top;
  line-height: 1.75;
  border-bottom: 1px solid var(--line);
}

.page-faq .member-table tbody th {
  border-left: 3px solid var(--cyan);
  white-space: nowrap;
}

.page-faq .member-row--sail th {
  border-left-color: var(--purple);
}

.page-faq .member-row--home th {
  border-left-color: var(--amber);
}

.page-faq .member-table tbody tr:hover {
  background: rgba(18, 41, 74, 0.42);
}

.page-faq .cell-k {
  display: none;
}

@media (max-width: 719px) {
  .page-faq .member-table,
  .page-faq .member-table tbody,
  .page-faq .member-table tr,
  .page-faq .member-table th,
  .page-faq .member-table td {
    display: block;
    width: 100%;
  }

  .page-faq .member-table thead {
    display: none;
  }

  .page-faq .member-table tbody tr {
    margin-bottom: 14px;
    padding: 6px 0 10px;
    border: 1px solid var(--line);
    border-left: 3px solid var(--cyan);
    background: rgba(18, 41, 74, 0.34);
  }

  .page-faq .member-table tbody .member-row--sail {
    border-left-color: var(--purple);
  }

  .page-faq .member-table tbody .member-row--home {
    border-left-color: var(--amber);
  }

  .page-faq .member-table tbody th,
  .page-faq .member-table tbody td {
    padding: 7px 14px;
    border-bottom: 0;
    border-left: 0;
  }

  .page-faq .cell-k {
    display: block;
    margin-bottom: 3px;
    font-size: 11px;
    letter-spacing: 0.16em;
    color: var(--muted);
  }
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  margin-top: 24px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  background: transparent;
  transition: background-color 0.2s var(--ease);
}

.page-faq .faq-item[open] {
  background: rgba(18, 41, 74, 0.36);
}

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 18px 42px 18px 14px;
  list-style: none;
  cursor: pointer;
  color: var(--paper);
  font-size: 16px;
  line-height: 1.6;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  top: 17px;
  right: 14px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
  color: var(--orange);
}

.page-faq .faq-item__q:hover {
  color: var(--cyan);
}

.page-faq .faq-item__coord {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-item[open] .faq-item__coord {
  color: var(--cyan);
}

.page-faq .faq-item__a {
  padding: 0 42px 22px 14px;
}

.page-faq .steps {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .steps li {
  position: relative;
  padding-left: 24px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--paper);
}

.page-faq .steps li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 11px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 8px rgba(57, 230, 216, 0.65);
}

.page-faq .steps a,
.page-faq .client-col__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(57, 230, 216, 0.4);
}

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

/* ---------- 客户端双栏 ---------- */
.page-faq .client-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  margin-top: 26px;
}

@media (min-width: 760px) {
  .page-faq .client-split {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 20px;
  }
}

.page-faq .client-col {
  padding: 20px 18px 24px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(10, 23, 48, 0.92), rgba(4, 7, 15, 0.92));
}

.page-faq .client-col--ios {
  border-top: 3px solid var(--cyan);
}

.page-faq .client-col--android {
  border-top: 3px solid var(--purple);
}

.page-faq .client-col__badge {
  display: inline-block;
  margin: 0 0 14px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .client-col--android .client-col__badge {
  color: var(--purple);
}

.page-faq .client-col h3 {
  margin: 0 0 10px;
  font-family: var(--font-title);
  font-size: 23px;
  font-weight: 700;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-faq .client-col__note {
  margin: 0 0 18px;
  font-size: 13.5px;
  line-height: 1.82;
  color: var(--muted);
}

.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .step-list li {
  display: flex;
  gap: 12px;
  font-size: 14px;
  line-height: 1.78;
  color: var(--paper);
}

.page-faq .step-list .mono {
  flex: none;
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--orange);
}

/* ---------- 收尾横带 ---------- */
.page-faq .doc-next {
  padding-bottom: 0;
}

.page-faq .doc-next__band {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: 28px 20px;
  border: 1px solid var(--line);
  background:
    radial-gradient(120% 150% at 0% 0%, rgba(57, 230, 216, 0.15), transparent 62%),
    radial-gradient(120% 150% at 100% 100%, rgba(169, 107, 255, 0.14), transparent 60%),
    linear-gradient(120deg, rgba(18, 41, 74, 0.96), rgba(4, 7, 15, 0.96));
  clip-path: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 0 100%);
}

@media (min-width: 820px) {
  .page-faq .doc-next__band {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    align-items: center;
    gap: 44px;
    padding: 40px 36px;
  }
}

.page-faq .doc-next__flag {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--orange);
}

.page-faq .doc-next__text h2 {
  margin: 0 0 12px;
  font-family: var(--font-title);
  font-size: clamp(23px, 4.6vw, 32px);
  font-weight: 700;
  line-height: 1.16;
  color: var(--paper);
}

.page-faq .doc-next__text p {
  margin: 0;
  max-width: 52ch;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}

.page-faq .doc-next__actions {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}

.page-faq .doc-next__meta {
  margin: 4px 0 0;
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 420px) {
  .page-faq .faq-hero__title {
    font-size: 27px;
  }

  .page-faq .faq-item__q {
    padding-right: 34px;
    font-size: 15px;
  }

  .page-faq .faq-item__a {
    padding-right: 18px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .doc-card,
  .page-faq .doc-rail__list a,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .doc-card:hover,
  .page-faq .doc-card:focus-visible {
    transform: none;
  }
}
<<<END>>>