.page-faq {
  --faq-hair: rgba(14, 42, 58, 0.13);
  --faq-hair-strong: rgba(14, 42, 58, 0.3);
  --faq-teal-wash: rgba(23, 195, 178, 0.1);
  --faq-rust-wash: rgba(200, 69, 46, 0.07);
  color: var(--ink);
  font-family: var(--font-body);
}

.page-faq .faq-shell {
  padding-bottom: 76px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 16px 0 34px;
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 250;
  font-size: clamp(34px, 8.4vw, 78px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  margin: 12px 0 0;
  max-width: 15ch;
}

.page-faq .faq-hero__lede {
  margin: 22px 0 0;
  max-width: 40ch;
  color: var(--ink-2);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin: 28px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-hair);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--slate);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 22px;
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  padding: 9px 16px;
  border: 1px solid var(--faq-hair-strong);
  border-radius: 999px;
  font-size: 13px;
  color: var(--ink);
  text-decoration: none;
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--teal);
  background: var(--cream-soft);
  color: var(--teal-ink);
}

/* ---------- 区块骨架 ---------- */
.page-faq .faq-sec {
  padding: 52px 0 8px;
  border-top: 1px solid var(--faq-hair);
  scroll-margin-top: calc(var(--topbar-h, 72px) + 18px);
}

.page-faq .faq-sec:first-of-type {
  border-top: 0;
}

.page-faq .faq-sec__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 18px;
}

.page-faq .faq-sec__title {
  margin: 0;
  max-width: 22ch;
}

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

.page-faq .faq-sec__lede {
  margin: 0 0 4px;
  color: var(--ink-2);
}

.page-faq .faq-sec__foot {
  margin: 26px 0 0;
  padding-left: 16px;
  border-left: 3px solid var(--rust);
  color: var(--ink-2);
}

.page-faq .faq-sec__foot a {
  color: var(--teal-ink);
  text-underline-offset: 3px;
}

/* ---------- 图例 ---------- */
.page-faq .legend {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .legend__item {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px;
  padding: 14px 16px;
  background: var(--cream-soft);
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-s);
}

.page-faq .legend__dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  flex: none;
  align-self: center;
}

.page-faq .legend__dot--old {
  background: var(--rust);
}

.page-faq .legend__dot--new {
  background: var(--teal);
}

.page-faq .legend__name {
  font-weight: 600;
  font-size: 15px;
}

.page-faq .legend__desc {
  flex: 1 1 200px;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-faq .faq-figure {
  margin: 30px 0 0;
}

/* ---------- 双栏对照表 ---------- */
.page-faq .cmp {
  margin-top: 24px;
  border: 1px solid var(--faq-hair-strong);
  border-radius: var(--r-m);
  overflow: hidden;
  background: var(--cream-soft);
}

.page-faq .cmp__head {
  display: none;
}

.page-faq .cmp__row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  padding: 18px 16px;
  border-top: 1px solid var(--faq-hair);
  transition: background var(--dur) var(--ease);
}

.page-faq .cmp__row:first-of-type {
  border-top: 0;
}

.page-faq .cmp__topic {
  display: flex;
  align-items: baseline;
  gap: 10px;
  font-weight: 600;
  font-size: 15px;
}

.page-faq .cmp__no {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-faq .cmp__val {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--ink-2);
}

.page-faq .cmp__badge {
  flex: none;
  padding: 1px 7px;
  border-radius: 3px;
  font-size: 11px;
  letter-spacing: 0.1em;
  line-height: 1.7;
}

.page-faq .cmp__val--old .cmp__badge {
  background: var(--faq-rust-wash);
  color: var(--rust);
}

.page-faq .cmp__val--new .cmp__badge {
  background: var(--faq-teal-wash);
  color: var(--teal-ink);
}

/* ---------- 设备对照 ---------- */
.page-faq .dev-layout {
  display: grid;
  gap: 28px;
  margin-top: 6px;
}

.page-faq .dev-grid {
  display: grid;
  gap: 10px;
  align-content: start;
}

.page-faq .dev {
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-s);
  background: var(--cream-soft);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease);
}

.page-faq .dev[open] {
  border-color: var(--teal);
}

.page-faq .dev__sum {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink);
}

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

.page-faq .dev__sum::after {
  content: "+";
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--teal-ink);
}

.page-faq .dev[open] .dev__sum::after {
  content: "–";
}

.page-faq .dev__no {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--slate);
}

.page-faq .dev__body {
  padding: 0 16px 16px 40px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

.page-faq .dev-figure {
  margin: 0;
}

/* ---------- 高频问答 ---------- */
.page-faq .qa-groups {
  display: grid;
  gap: 30px;
  margin-top: 26px;
}

.page-faq .qa-group__label {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--rust);
}

.page-faq .qa-list,
.page-faq .qa-group {
  display: grid;
  gap: 10px;
}

.page-faq .qa-group__label + .qa {
  margin-top: 0;
}

.page-faq .qa {
  border: 1px solid var(--faq-hair);
  border-radius: var(--r-s);
  background: var(--cream-soft);
  overflow: hidden;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--faq-hair-strong);
  box-shadow: var(--shadow-1);
}

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  line-height: 1.65;
  color: var(--ink);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--orange);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
}

.page-faq .qa__n {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate);
}

.page-faq .qa__a {
  padding: 0 16px 16px 42px;
  font-size: 14px;
  line-height: 1.85;
  color: var(--ink-2);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-sec--end {
  padding-top: 52px;
  border-top: 0;
}

.page-faq .faq-end {
  background: var(--ink);
  color: var(--cream);
  border-radius: var(--r-l);
  padding: 34px 22px 36px;
}

.page-faq .faq-end__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-faq .faq-end .section-index {
  color: var(--teal);
}

.page-faq .faq-end__title {
  margin: 0;
  color: var(--cream);
  max-width: 22ch;
}

.page-faq .faq-end__lede {
  margin: 16px 0 0;
  max-width: 38ch;
  font-size: 15px;
  line-height: 1.85;
  color: rgba(245, 240, 230, 0.78);
}

.page-faq .ready {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .ready__item {
  position: relative;
  padding-left: 22px;
  font-size: 14.5px;
  line-height: 1.75;
  color: rgba(245, 240, 230, 0.92);
}

.page-faq .ready__item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 11px;
  height: 1px;
  background: var(--teal);
}

.page-faq .faq-end__btn {
  margin-top: 26px;
}

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-hero {
    padding-top: 24px;
  }

  .page-faq .legend {
    grid-template-columns: 1fr 1fr;
  }

  .page-faq .faq-sec {
    padding: 64px 0 12px;
  }

  .page-faq .qa-groups {
    grid-template-columns: 1fr 1fr;
    gap: 30px 32px;
  }

  .page-faq .faq-end {
    padding: 42px 38px 44px;
  }
}

/* ---------- 桌面：对照表展开为三列 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero__title {
    font-size: clamp(56px, 6.4vw, 92px);
  }

  .page-faq .cmp__head {
    display: grid;
    grid-template-columns: minmax(150px, 1fr) 1.4fr 1.4fr;
    background: var(--ink);
    color: var(--cream);
  }

  .page-faq .cmp__h {
    padding: 14px 18px;
    font-size: 11px;
    letter-spacing: 0.16em;
    border-left: 1px solid var(--line-invert);
  }

  .page-faq .cmp__h:first-child {
    border-left: 0;
  }

  .page-faq .cmp__h:last-child {
    color: var(--teal);
  }

  .page-faq .cmp__row {
    grid-template-columns: minmax(150px, 1fr) 1.4fr 1.4fr;
    gap: 0;
    padding: 0;
    align-items: stretch;
    box-shadow: inset 0 0 0 0 var(--teal);
  }

  .page-faq .cmp__row:hover {
    background: var(--faq-teal-wash);
    box-shadow: inset 3px 0 0 0 var(--teal);
  }

  .page-faq .cmp__topic,
  .page-faq .cmp__val {
    padding: 16px 18px;
    border-left: 1px solid var(--faq-hair);
  }

  .page-faq .cmp__topic {
    border-left: 0;
    align-items: baseline;
  }

  .page-faq .cmp__badge {
    display: none;
  }

  .page-faq .cmp__row:hover .cmp__val--new {
    color: var(--teal-ink);
  }

  .page-faq .dev-layout {
    grid-template-columns: 1.45fr 1fr;
    gap: 38px;
    align-items: start;
  }

  .page-faq .dev-figure {
    margin-top: 4px;
  }

  .page-faq .faq-end {
    display: grid;
    grid-template-columns: 1.1fr 1fr;
    gap: 0 48px;
    align-items: start;
    padding: 48px 46px 52px;
  }

  .page-faq .faq-end__head,
  .page-faq .faq-end__lede {
    grid-column: 1;
  }

  .page-faq .ready {
    grid-column: 2;
    grid-row: 1 / span 2;
    margin-top: 6px;
  }

  .page-faq .faq-end__btn {
    grid-column: 1;
    justify-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .cmp__row,
  .page-faq .qa,
  .page-faq .dev {
    transition: none;
  }
}
<<<END>>>