.page-faq {
  --faq-index-w: 244px;
  --faq-gap: clamp(28px, 4vw, 62px);
  --faq-sec-gap: clamp(46px, 6.5vw, 84px);
  overflow-x: clip;
  padding-bottom: clamp(56px, 8vw, 108px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 3vw, 34px) 0 clamp(30px, 5vw, 58px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -160px;
  right: -110px;
  width: min(560px, 74vw);
  height: min(560px, 74vw);
  background: radial-gradient(circle, rgba(123, 92, 255, 0.22), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-faq .faq-hero__copy {
  max-width: 44ch;
}

.page-faq .faq-hero__copy h1 {
  margin: 14px 0 18px;
  font-size: clamp(32px, 5.2vw, 58px);
  line-height: 1.12;
  letter-spacing: -0.012em;
  color: var(--white);
  text-shadow: 0 0 34px rgba(123, 92, 255, 0.4);
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-l);
  overflow: hidden;
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1200 / 640;
  object-fit: cover;
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  position: relative;
}

.page-faq .faq-body::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(30, 42, 92, 0.42) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(30, 42, 92, 0.42) 1px, transparent 1px);
  background-size: 78px 78px;
  -webkit-mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 74%);
  mask-image: radial-gradient(circle at 50% 18%, #000 0%, transparent 74%);
  opacity: 0.55;
  pointer-events: none;
}

.page-faq .faq-body__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 44px);
  align-items: start;
}

@media (min-width: 1000px) {
  .page-faq .faq-body__inner {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-gap);
  }
}

/* ---------- 分类索引 ---------- */
.page-faq .faq-index {
  min-width: 0;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-size: 11.5px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: flex;
  flex-wrap: nowrap;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  white-space: nowrap;
  padding: 9px 15px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--muted);
  font-size: 14px;
  text-decoration: none;
  transition: color 0.35s var(--ease), border-color 0.35s var(--ease),
    background-color 0.35s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--white);
  border-color: rgba(34, 225, 255, 0.6);
  background: rgba(34, 225, 255, 0.08);
}

.page-faq .faq-index__no {
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: 0.04em;
}

@media (min-width: 1000px) {
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 30px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-index__link {
    border-color: transparent;
    border-radius: var(--radius-s);
    padding: 10px 12px;
    white-space: normal;
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: var(--faq-sec-gap);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: calc(var(--header-h) + 36px);
}

.page-faq .faq-group__head {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding-bottom: 16px;
  margin-bottom: 22px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__tag {
  flex: none;
  writing-mode: vertical-rl;
  padding-top: 4px;
  font-size: 11px;
  letter-spacing: 0.3em;
  color: var(--cyan);
  opacity: 0.9;
}

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

.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-size: clamp(23px, 3.3vw, 35px);
  line-height: 1.22;
  letter-spacing: -0.008em;
  color: var(--white);
}

.page-faq .faq-group__note {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

.page-faq #group-login .faq-group__tag { color: var(--cyan); }
.page-faq #group-compare .faq-group__tag { color: var(--violet); }
.page-faq #group-version .faq-group__tag { color: var(--gold); }
.page-faq #group-security .faq-group__tag { color: var(--coral); }
.page-faq #group-support .faq-group__tag { color: var(--mint); }
.page-faq #group-more .faq-group__tag { color: var(--orange); }

.page-faq .faq-group__figure {
  margin: 0 0 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  overflow: hidden;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 560;
  object-fit: cover;
}

.page-faq .faq-group__list {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.page-faq .faq-group__foot {
  margin: 20px 0 0;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-group__foot a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(34, 225, 255, 0.36);
  transition: border-color 0.3s var(--ease), color 0.3s var(--ease);
}

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

/* ---------- 可展开问答 ---------- */
.page-faq .disclosure {
  border: 1px solid var(--line);
  border-radius: var(--radius-m);
  background: rgba(13, 20, 48, 0.62);
  overflow: hidden;
  transition: border-color 0.4s var(--ease), background-color 0.4s var(--ease),
    transform 0.4s var(--ease), box-shadow 0.4s var(--ease);
}

.page-faq .disclosure:hover {
  border-color: rgba(123, 92, 255, 0.62);
  transform: translateY(-2px);
}

.page-faq .disclosure:focus-within {
  border-color: rgba(34, 225, 255, 0.6);
}

.page-faq .disclosure[data-open="true"] {
  border-color: rgba(34, 225, 255, 0.55);
  background: rgba(6, 10, 28, 0.94);
  box-shadow: 0 0 0 1px rgba(34, 225, 255, 0.1), var(--shadow-soft);
  transform: none;
}

.page-faq .disclosure__trigger {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  padding: 18px 20px;
  border: 0;
  background: transparent;
  color: var(--white);
  font: inherit;
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 600;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color 0.3s var(--ease);
}

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

.page-faq .disclosure__index {
  flex: none;
  padding-top: 4px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .disclosure__label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .disclosure__arrow {
  flex: none;
  color: var(--muted);
}

.page-faq .disclosure[data-open="true"] .disclosure__arrow {
  color: var(--cyan);
}

.page-faq .disclosure__body {
  color: var(--muted);
  font-size: 15.5px;
  line-height: 1.78;
  max-width: 62ch;
}

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

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

/* ---------- 最后一组：求助指引 ---------- */
.page-faq .faq-help {
  position: relative;
  padding: clamp(22px, 3vw, 34px);
  border: 1px solid rgba(255, 122, 52, 0.32);
  border-radius: var(--radius-l);
  background:
    linear-gradient(150deg, rgba(255, 122, 52, 0.1), rgba(123, 92, 255, 0.09) 46%, rgba(6, 10, 28, 0) 78%),
    rgba(13, 20, 48, 0.6);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-help__lead {
  margin: 0 0 20px;
  color: var(--white);
  font-size: clamp(15.5px, 2vw, 17px);
  line-height: 1.75;
  max-width: 52ch;
}

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

.page-faq .faq-help__list li {
  display: flex;
  gap: 12px;
  align-items: flex-start;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-help__key {
  flex: none;
  padding: 2px 8px;
  border: 1px solid rgba(34, 225, 255, 0.4);
  border-radius: 6px;
  font-size: 11.5px;
  color: var(--cyan);
  background: rgba(34, 225, 255, 0.07);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-help__note {
  margin: 20px 0 0;
  padding-top: 18px;
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 14px;
  line-height: 1.75;
  max-width: 54ch;
}

@media (min-width: 720px) {
  .page-faq .faq-help__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 28px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-groups {
    padding-right: clamp(0px, 2vw, 28px);
  }
}
</main>