.page-faq {
  --faq-accent: var(--peach);
  padding-bottom: 0;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 40px 0 26px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -140px;
  left: -8%;
  right: -12%;
  height: 560px;
  background:
    radial-gradient(42% 58% at 80% 22%, rgba(255, 138, 61, .22), transparent 70%),
    radial-gradient(40% 52% at 6% 4%, rgba(155, 92, 255, .24), transparent 72%),
    radial-gradient(30% 40% at 46% 0%, rgba(53, 230, 224, .12), transparent 74%);
  pointer-events: none;
}

.page-faq .breadcrumbs {
  position: relative;
  margin-bottom: 26px;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
  align-items: center;
}

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

.page-faq .faq-hero__text .headline {
  margin: 10px 0 0;
  transform: rotate(-1.2deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__lead {
  margin: 20px 0 0;
  max-width: 56ch;
  color: var(--muted);
  font-size: 17px;
  line-height: 1.8;
}

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

.page-faq .faq-facts li {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  min-height: 44px;
  padding: 11px 16px;
  border: 1px solid var(--line);
  background: rgba(25, 28, 48, .72);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
}

.page-faq .faq-facts .mono {
  color: var(--cyan);
  font-size: 15px;
  font-weight: 600;
}

.page-faq .faq-hero__media {
  position: relative;
  min-width: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: var(--shadow-soft);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 30px 100%, 0 calc(100% - 30px));
  overflow: hidden;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background:
    repeating-linear-gradient(180deg, rgba(244, 241, 233, .045) 0 1px, transparent 1px 4px),
    linear-gradient(160deg, rgba(53, 230, 224, .14), transparent 55%);
  pointer-events: none;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 34px;
  padding: 26px 0 0;
}

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

.page-faq .faq-index__title {
  display: none;
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-faq .faq-index__list::-webkit-scrollbar {
  height: 4px;
}

.page-faq .faq-index__list::-webkit-scrollbar-thumb {
  background: var(--line);
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 9px;
  min-height: 44px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  background: rgba(25, 28, 48, .68);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color .2s ease, border-color .2s ease, background .2s ease;
}

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

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.page-faq .faq-index__link[aria-current="true"],
.page-faq .faq-index__link.is-active {
  color: var(--peach);
  border-color: var(--peach);
  background: rgba(255, 138, 61, .12);
}

.page-faq .faq-index__link[aria-current="true"] .faq-index__num,
.page-faq .faq-index__link.is-active .faq-index__num {
  color: var(--peach);
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-cat {
  margin-bottom: 52px;
  scroll-margin-top: 112px;
}

.page-faq .faq-cat:last-child {
  margin-bottom: 8px;
}

.page-faq .faq-cat--gift { --faq-accent: var(--peach); }
.page-faq .faq-cat--version { --faq-accent: var(--cyan); }
.page-faq .faq-cat--device { --faq-accent: var(--lime); }
.page-faq .faq-cat--export { --faq-accent: var(--grape); }
.page-faq .faq-cat--switch { --faq-accent: var(--peach); }
.page-faq .faq-cat--browser { --faq-accent: var(--cyan); }
.page-faq .faq-cat--help { --faq-accent: var(--coral); }

.page-faq .faq-cat__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 16px;
  padding-bottom: 13px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-cat__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0;
  font-size: 26px;
  font-weight: 800;
  letter-spacing: .01em;
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-cat__title::before {
  content: "";
  flex: 0 0 auto;
  width: 11px;
  height: 11px;
  background: var(--faq-accent);
  box-shadow: 0 0 14px var(--faq-accent);
}

.page-faq .faq-cat__summary {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(25, 28, 48, .92), rgba(15, 16, 32, .92));
  transition: border-color .22s ease, background .22s ease;
}

.page-faq .faq-item::after {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 16px;
  height: 16px;
  background: var(--bg);
  clip-path: polygon(0 0, 100% 0, 100% 100%);
  pointer-events: none;
}

.page-faq .faq-item:hover {
  border-color: rgba(255, 138, 61, .45);
}

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

.page-faq .faq-item__summary {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  min-height: 44px;
  padding: 17px 52px 17px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__summary::before {
  content: "";
  flex: 0 0 auto;
  width: 10px;
  height: 10px;
  margin-top: 8px;
  background: var(--faq-accent);
  box-shadow: 0 0 10px var(--faq-accent);
}

.page-faq .faq-item__summary::after {
  content: "";
  position: absolute;
  top: 24px;
  right: 22px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--muted);
  border-bottom: 2px solid var(--muted);
  transform: rotate(45deg);
  transition: transform .22s ease, border-color .22s ease;
}

.page-faq .faq-item[open] .faq-item__summary::after {
  transform: rotate(-135deg);
  border-color: var(--faq-accent);
}

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

.page-faq .faq-item__q {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.65;
  color: var(--ink);
}

.page-faq .faq-item__a {
  padding: 0 22px 20px 40px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--muted);
  animation: faq-reveal .26s ease;
}

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

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

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

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--peach);
}

.page-faq .faq-item__a .mono {
  color: var(--faq-accent);
  font-size: .93em;
  letter-spacing: .02em;
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 换机章节配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 20px;
  border: 1px solid var(--line);
  background: var(--panel);
  overflow: hidden;
}

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

.page-faq .faq-figure__cap {
  padding: 11px 18px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .05em;
  color: var(--muted);
}

/* ---------- 求助区块 ---------- */
.page-faq .faq-help {
  padding: 24px;
  border: 1px solid var(--line);
  border-left: 3px solid var(--faq-accent);
  background: linear-gradient(135deg, rgba(42, 17, 64, .55), rgba(25, 28, 48, .9));
  color: var(--muted);
  font-size: 15px;
  line-height: 1.8;
}

.page-faq .faq-help > p {
  margin: 0 0 12px;
}

.page-faq .faq-help .mono {
  color: var(--cyan);
  font-size: .95em;
}

.page-faq .faq-help__lead {
  margin-top: 18px !important;
  color: var(--ink);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 9px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-help__list li {
  display: flex;
  gap: 10px;
  color: var(--ink);
  font-size: 15px;
  line-height: 1.7;
}

.page-faq .faq-help__list li::before {
  content: "";
  flex: 0 0 auto;
  width: 8px;
  height: 8px;
  margin-top: 9px;
  background: var(--faq-accent);
  box-shadow: 0 0 10px var(--faq-accent);
}

/* ---------- 收尾灯管 ---------- */
.page-faq .faq-lamp {
  height: 2px;
  margin: 44px 0 0;
  background: linear-gradient(90deg, transparent, var(--grape) 10%, var(--peach) 34%, var(--lime) 58%, var(--cyan) 84%, transparent);
  opacity: .75;
}

/* ---------- 响应式 ---------- */
@media (max-width: 639px) {
  .page-faq .faq-hero {
    padding-top: 28px;
  }

  .page-faq .faq-hero__text .headline {
    transform: none;
  }

  .page-faq .faq-hero__lead {
    font-size: 16px;
  }

  .page-faq .faq-cat__title {
    font-size: 22px;
  }

  .page-faq .faq-item__a {
    padding-left: 22px;
  }

  .page-faq .faq-help {
    padding: 20px 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 52px 0 34px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
    gap: 52px;
  }

  .page-faq .faq-hero__media {
    clip-path: polygon(0 0, calc(100% - 36px) 0, 100% 36px, 100% 100%, 36px 100%, 0 calc(100% - 36px));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: 58px;
    align-items: start;
    padding-top: 34px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 108px;
  }

  .page-faq .faq-index__title {
    display: block;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 2px;
    padding: 0;
    overflow: visible;
    border-left: 1px solid var(--line);
  }

  .page-faq .faq-index__link {
    margin-left: -1.5px;
    padding: 11px 14px;
    border: 0;
    border-left: 3px solid transparent;
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-left-color: var(--peach);
    background: rgba(255, 138, 61, .07);
  }

  .page-faq .faq-index__link[aria-current="true"],
  .page-faq .faq-index__link.is-active {
    border-left-color: var(--peach);
    background: rgba(255, 138, 61, .12);
  }

  .page-faq .faq-cat {
    margin-bottom: 64px;
  }

  .page-faq .faq-cat__title {
    font-size: 30px;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-shell {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 68px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item__summary::after,
  .page-faq .faq-index__link,
  .page-faq .faq-item {
    transition: none;
  }

  .page-faq .faq-hero__text .headline {
    transform: none;
  }
}