.page-faq {
  --faq-sticky: 88px;
  --faq-grid-line: rgba(34, 211, 238, .07);
  --faq-surface: rgba(14, 42, 71, .72);
  display: block;
  padding-block: clamp(20px, 3vw, 36px) clamp(56px, 8vw, 104px);
}

.page-faq .breadcrumb {
  margin-bottom: clamp(20px, 3.5vw, 36px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(8px, 2vw, 20px) clamp(30px, 5vw, 60px);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -12% -14% auto -14%;
  height: 138%;
  background-image:
    linear-gradient(90deg, var(--faq-grid-line) 1px, transparent 1px),
    linear-gradient(0deg, var(--faq-grid-line) 1px, transparent 1px);
  background-size: 72px 72px;
  -webkit-mask-image: radial-gradient(120% 78% at 18% 4%, #000 18%, transparent 72%);
  mask-image: radial-gradient(120% 78% at 18% 4%, #000 18%, transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(26px, 4vw, 46px);
  align-items: end;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(38px, 8.2vw, 88px);
  line-height: .98;
  letter-spacing: -.03em;
  color: var(--white);
}

.page-faq .faq-hero__lead {
  max-width: 56ch;
  margin: 0 0 clamp(20px, 3vw, 28px);
  color: var(--mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.78;
}

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

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  padding: 18px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(160deg, rgba(18, 52, 84, .92), rgba(7, 26, 47, .92));
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-left: 12px;
  border-left: 2px solid var(--line);
}

.page-faq .faq-hero__stats .stat:first-child {
  border-left-color: var(--cyan);
}

.page-faq .faq-hero__stats .stat:nth-child(2) {
  border-left-color: var(--orange);
}

.page-faq .faq-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(24px, 4.4vw, 34px);
  font-weight: 700;
  line-height: 1;
  color: var(--cyan);
}

.page-faq .faq-hero__stats .stat:nth-child(2) .stat__value {
  color: var(--orange);
}

.page-faq .faq-hero__stats .stat__label {
  font-size: 12px;
  line-height: 1.45;
  color: var(--silver);
}

/* ---------- 快速答案胶囊 ---------- */
.page-faq .faq-quick {
  margin-top: clamp(6px, 2vw, 16px);
}

.page-faq .faq-quick__list {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick__list .chip {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
  transition: transform .25s var(--ease), border-color .25s var(--ease);
}

.page-faq .faq-quick__list .chip:hover,
.page-faq .faq-quick__list .chip:focus-visible {
  transform: translateY(-2px);
  border-color: var(--cyan);
}

/* ---------- 分类 ---------- */
.page-faq .faq-cats {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-cats__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  align-items: end;
  margin-bottom: clamp(20px, 3vw, 32px);
}

.page-faq .faq-cats__body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-faq .faq-cats__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-cat {
  padding: 20px 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--faq-surface);
  transition: transform .28s var(--ease), border-color .28s var(--ease);
}

.page-faq .faq-cat:hover {
  transform: translateY(-3px);
  border-color: var(--cyan);
}

.page-faq .faq-cat__no {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-cat h3 {
  margin: 8px 0 8px;
  font-size: clamp(18px, 2.2vw, 21px);
  color: var(--white);
}

.page-faq .faq-cat p {
  margin: 0 0 14px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-cat__link {
  display: inline-block;
  font-size: 14px;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 211, 238, .4);
  padding-bottom: 2px;
}

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

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

/* ---------- 赛前清单 ---------- */
.page-faq .faq-check {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-check__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 44px);
  align-items: start;
}

.page-faq .faq-check__copy h2 {
  margin: 12px 0 12px;
  font-family: var(--font-display);
  font-size: clamp(26px, 4.4vw, 40px);
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-check__lead {
  margin: 0 0 clamp(18px, 3vw, 26px);
  max-width: 54ch;
  color: var(--mist);
  font-size: 15.5px;
  line-height: 1.75;
}

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

.page-faq .faq-step {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: linear-gradient(120deg, rgba(14, 42, 71, .95), rgba(7, 26, 47, .6));
  transition: border-color .28s var(--ease), transform .28s var(--ease);
}

.page-faq .faq-step:hover {
  border-color: rgba(34, 211, 238, .6);
  transform: translateY(-2px);
}

.page-faq .faq-step__no {
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(34, 211, 238, .5);
  background: rgba(34, 211, 238, .12);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-faq .faq-step h3 {
  margin: 2px 0 6px;
  font-size: 16.5px;
  color: var(--white);
}

.page-faq .faq-step p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-check__foot {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--silver);
}

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

/* ---------- 指标表 ---------- */
.page-faq .faq-metrics {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
}

.page-faq .faq-table caption {
  text-align: left;
}

.page-faq .faq-table thead th {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--sage);
  background: rgba(127, 163, 154, .12);
  border-bottom: 1px solid rgba(127, 163, 154, .45);
  text-align: left;
  padding: 12px 14px;
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  padding: 13px 14px;
  text-align: left;
  font-size: 14.5px;
  font-weight: 600;
  color: var(--white);
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  padding: 13px 14px;
  font-size: 14px;
  line-height: 1.65;
  color: var(--mist);
  border-top: 1px solid rgba(30, 70, 102, .7);
}

.page-faq .faq-table tbody th {
  border-top: 1px solid rgba(30, 70, 102, .7);
}

.page-faq .faq-table tbody tr {
  transition: background-color .2s var(--ease);
}

.page-faq .faq-table tbody tr:hover {
  background: rgba(34, 211, 238, .07);
}

.page-faq .faq-metrics__note {
  margin: 16px 0 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--silver);
  max-width: 78ch;
}

/* ---------- 问答 ---------- */
.page-faq .faq-answers {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-answers__layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(20px, 3vw, 32px);
  align-items: start;
}

.page-faq .faq-index {
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: rgba(7, 26, 47, .8);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--silver);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  color: var(--mist);
  font-size: 14.5px;
  text-decoration: none;
  transition: background-color .22s var(--ease), border-color .22s var(--ease), color .22s var(--ease);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(34, 211, 238, .09);
  border-left-color: var(--cyan);
  color: var(--white);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan);
}

.page-faq .faq-index__cta {
  width: 100%;
  margin-top: 14px;
  justify-content: center;
}

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

.page-faq .faq-group__head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__head h3 {
  margin: 0;
  font-size: clamp(19px, 2.4vw, 24px);
  color: var(--white);
}

.page-faq .faq-group .accordion {
  display: grid;
  gap: 10px;
}

.page-faq .faq-group .accordion__item {
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  background: var(--faq-surface);
  overflow: hidden;
  transition: border-color .25s var(--ease);
}

.page-faq .faq-group .accordion__item[open] {
  border-color: rgba(34, 211, 238, .55);
}

.page-faq .faq-group .accordion__summary {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.6;
  color: var(--white);
}

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

.page-faq .faq-group .accordion__summary::after {
  content: "";
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 7px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform .3s var(--ease), border-color .3s var(--ease);
}

.page-faq .faq-group .accordion__item[open] .accordion__summary::after {
  transform: rotate(-135deg);
  border-color: var(--orange);
}

.page-faq .faq-group .accordion__summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
}

.page-faq .faq-group .accordion__body {
  margin: 0 18px;
  padding: 14px 0 18px;
  border-top: 1px solid rgba(30, 70, 102, .8);
  color: var(--mist);
  font-size: 15px;
  line-height: 1.76;
}

.page-faq .faq-group .accordion__body p {
  margin: 0 0 10px;
}

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

.page-faq .faq-group .accordion__body strong {
  color: var(--cyan);
  font-weight: 600;
}

/* ---------- 版本更新 ---------- */
.page-faq .faq-updates {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-updates__panel {
  padding: clamp(22px, 3.6vw, 42px);
  border-radius: var(--r-xl);
}

.page-faq .faq-updates__panel h2 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.15;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-updates__list {
  display: grid;
  gap: 12px;
  margin: clamp(18px, 3vw, 26px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-updates__list li {
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.page-faq .faq-updates__tag {
  flex: 0 0 auto;
  padding: 3px 11px;
  border-radius: 999px;
  border: 1px solid rgba(127, 163, 154, .55);
  background: rgba(127, 163, 154, .16);
  color: var(--sage);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.6;
}

.page-faq .faq-updates__list p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-updates__more {
  margin: 20px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--silver);
}

.page-faq .faq-updates__more a {
  color: var(--cyan);
}

/* ---------- 仍需协助 ---------- */
.page-faq .faq-help {
  margin-top: clamp(46px, 7vw, 86px);
}

.page-faq .faq-help__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: start;
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(34, 211, 238, .16), transparent 58%),
    var(--panel);
}

.page-faq .faq-help__copy h2 {
  margin: 12px 0 14px;
  font-family: var(--font-display);
  font-size: clamp(24px, 3.8vw, 36px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-help__copy p {
  margin: 0;
  max-width: 56ch;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--mist);
}

.page-faq .faq-help__contact {
  display: grid;
  gap: 12px;
  align-content: start;
}

.page-faq .faq-help__contact .contact-item__value--mono {
  font-family: var(--font-mono);
  word-break: break-word;
}

.page-faq .faq-help__note {
  margin: 2px 0 0;
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--silver);
}

.page-faq .faq-help__cta {
  margin-top: 6px;
  justify-self: start;
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-cats__head {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: clamp(24px, 4vw, 56px);
  }

  .page-faq .faq-check__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-help__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-cats__body {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: clamp(28px, 4vw, 52px);
  }

  .page-faq .faq-cats__figure {
    position: sticky;
    top: var(--faq-sticky);
  }

  .page-faq .faq-answers__layout {
    grid-template-columns: minmax(0, 250px) minmax(0, 1fr);
    gap: clamp(24px, 3.5vw, 44px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
  }

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

@media (max-width: 420px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: minmax(0, 1fr);
    gap: 12px;
  }

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

  .page-faq .faq-hero__actions .btn {
    width: 100%;
    justify-content: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .faq-step,
  .page-faq .faq-quick__list .chip,
  .page-faq .faq-group .accordion__summary::after {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .faq-step:hover,
  .page-faq .faq-quick__list .chip:hover {
    transform: none;
  }
}
<<<END>>>