.page-faq {
  --faq-line: rgba(11, 61, 145, .14);
  --faq-ink-soft: #34435c;
  background: var(--paper);
  color: var(--ink);
}

/* 首屏 */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
  background:
    radial-gradient(120% 100% at 88% 0%, rgba(0, 229, 255, .28) 0%, rgba(0, 229, 255, 0) 58%),
    linear-gradient(158deg, #061A3A 0%, #0B3D91 62%, #1B57CE 100%);
  color: var(--white);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -14%;
  bottom: -46%;
  width: 78%;
  height: 240px;
  background: repeating-linear-gradient(102deg, rgba(0, 229, 255, .20) 0 2px, rgba(0, 229, 255, 0) 2px 26px);
  transform: rotate(-7deg);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: 26px;
  padding-bottom: 40px;
}

.page-faq .faq-hero .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: .04em;
}

.page-faq .faq-hero .breadcrumb__link {
  color: rgba(255, 255, 255, .7);
  text-decoration: none;
}

.page-faq .faq-hero .breadcrumb__link:hover {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

.page-faq .faq-hero .breadcrumb__sep {
  color: rgba(255, 255, 255, .38);
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: .22em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 900;
  font-size: clamp(40px, 11vw, 76px);
  line-height: 1.02;
  letter-spacing: -.01em;
}

.page-faq .faq-hero__lead {
  max-width: 56ch;
  margin: 18px 0 0;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(255, 255, 255, .84);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stat {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 14px;
  border: 1px solid rgba(255, 255, 255, .2);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .07);
  font-size: 12px;
  color: rgba(255, 255, 255, .86);
}

.page-faq .faq-hero__statnum {
  font-size: 13px;
  font-weight: 700;
  color: var(--cyan);
}

/* 主体骨架 */
.page-faq .faq-body {
  display: grid;
  gap: 26px;
  padding: 30px 0 68px;
}

.page-faq .faq-index {
  border: 1px solid var(--mist);
  border-radius: var(--radius-md);
  background: var(--white);
  padding: 14px;
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-index__kicker {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--gray);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  margin: 0;
  padding: 0 0 4px;
  list-style: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--mist);
  border-radius: var(--pill);
  background: var(--paper);
  color: var(--ink);
  font-size: 13.5px;
  white-space: nowrap;
  text-decoration: none;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  background: var(--mist);
  border-color: var(--steel);
  color: var(--deep);
}

.page-faq .faq-index__num {
  font-size: 11px;
  font-weight: 700;
  color: var(--orange);
}

.page-faq .faq-index__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  color: var(--gray);
}

.page-faq .faq-index__note a {
  color: var(--steel);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 问答组 */
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: 40px;
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--topbar-h) + 16px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 16px;
  padding-top: 14px;
  border-top: 2px solid var(--faq-line);
}

.page-faq .faq-group__num {
  padding: 4px 11px;
  border-radius: var(--pill);
  background: var(--deep);
  color: var(--white);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-heading);
  font-size: clamp(21px, 5vw, 29px);
  font-weight: 900;
  line-height: 1.28;
}

.page-faq .faq-group__lead {
  flex-basis: 100%;
  margin: 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--gray);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 18px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--mist);
  box-shadow: var(--shadow-soft);
}

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

.page-faq .faq-figure__caption {
  margin: 0;
  padding: 11px 16px 13px;
  background: var(--white);
  border-top: 1px solid var(--mist);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-figure--aside {
  max-width: 560px;
}

/* 设备适配矩阵 */
.page-faq .dev-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 0 0 20px;
}

.page-faq .dev {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 12px;
  padding: 13px 16px;
  border: 1px solid var(--mist);
  border-radius: var(--radius-sm);
  background: var(--white);
}

.page-faq .dev__os {
  font-size: 14px;
  font-weight: 700;
  color: var(--deep);
}

.page-faq .dev__ver {
  font-size: 12px;
  color: var(--gray);
  padding: 3px 9px;
  border-radius: var(--pill);
  background: var(--paper);
}

/* 手风琴 */
.page-faq .qa {
  margin: 0 0 10px;
  border: 1px solid var(--mist);
  border-radius: var(--radius-md);
  background: var(--white);
  overflow: hidden;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .qa:hover {
  border-color: rgba(59, 111, 212, .5);
}

.page-faq .qa[open] {
  border-color: rgba(0, 229, 255, .85);
  box-shadow: var(--shadow-lift);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  border-left: 3px solid transparent;
  font-family: var(--font-heading);
  font-size: 15.5px;
  font-weight: 800;
  line-height: 1.55;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: border-color .2s var(--ease), background .2s var(--ease);
}

.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: 18px;
  line-height: 1.1;
  color: var(--orange);
}

.page-faq .qa[open] .qa__q {
  border-left-color: var(--cyan);
  background: linear-gradient(90deg, rgba(0, 229, 255, .12), rgba(0, 229, 255, 0) 72%);
}

.page-faq .qa[open] .qa__q::after {
  content: "–";
  color: var(--deep);
}

.page-faq .qa__num {
  flex: none;
  margin-top: 2px;
  padding: 2px 8px;
  border-radius: var(--pill);
  background: var(--mist);
  color: var(--deep);
  font-size: 11px;
  font-weight: 700;
}

.page-faq .qa__a {
  padding: 0 18px 18px 31px;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-ink-soft);
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a a {
  color: var(--steel);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .qa__a a:hover {
  color: var(--orange);
}

/* 联系支持 */
.page-faq .support {
  position: relative;
  overflow: hidden;
  padding: 26px 20px 24px;
  border-radius: var(--radius-lg);
  background:
    radial-gradient(100% 80% at 100% 0%, rgba(0, 229, 255, .26) 0%, rgba(0, 229, 255, 0) 60%),
    linear-gradient(155deg, var(--ink) 0%, var(--deep) 100%);
  color: var(--white);
}

.page-faq .support__lead {
  margin: 0 0 18px;
  max-width: 56ch;
  font-size: 14px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .82);
}

.page-faq .support__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.page-faq .support__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px 12px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(255, 255, 255, .14);
}

.page-faq .support__key {
  flex: 0 0 auto;
  min-width: 68px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan);
}

.page-faq .support__value {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14px;
  line-height: 1.6;
  word-break: break-word;
}

.page-faq .support .copy-btn {
  flex: none;
  padding: 5px 12px;
  border: 1px solid rgba(255, 255, 255, .34);
  border-radius: var(--pill);
  background: rgba(255, 255, 255, .08);
  color: var(--white);
  font-family: var(--font-mono);
  font-size: 11px;
  cursor: pointer;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .support .copy-btn:hover,
.page-faq .support .copy-btn:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .support .copy-btn[data-copied="true"] {
  background: var(--green);
  border-color: var(--green);
  color: var(--white);
}

.page-faq .support__note {
  margin: 14px 0 0;
  font-size: 12.5px;
  line-height: 1.8;
  color: rgba(255, 255, 255, .7);
}

.page-faq .support__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  margin-top: 20px;
}

.page-faq .support__link {
  color: rgba(255, 255, 255, .82);
  font-size: 13.5px;
  text-decoration: underline;
  text-underline-offset: 4px;
}

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

/* 平板与桌面 */
@media (min-width: 640px) {
  .page-faq .faq-hero__lead {
    font-size: 16.5px;
  }

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

  .page-faq .qa__q {
    padding: 17px 20px;
    font-size: 16px;
  }

  .page-faq .qa__a {
    padding: 0 22px 20px 34px;
    font-size: 15px;
  }

  .page-faq .support {
    padding: 32px 30px 30px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    padding-top: 36px;
    padding-bottom: 52px;
  }

  .page-faq .faq-body {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 48px;
    padding: 44px 0 88px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--topbar-h) + 20px);
    padding: 18px 16px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    overflow: visible;
    gap: 4px;
    padding: 0;
  }

  .page-faq .faq-index__link {
    border-radius: var(--radius-sm);
    border-color: transparent;
    background: transparent;
    padding: 9px 10px;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    background: var(--paper);
    border-color: var(--mist);
  }

  .page-faq .faq-figure {
    margin-bottom: 22px;
  }

  .page-faq .faq-figure--aside {
    max-width: 620px;
  }

  .page-faq .faq-groups {
    gap: 52px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa__q,
  .page-faq .faq-index__link,
  .page-faq .support .copy-btn {
    transition: none;
  }
}
<<<END>>>