.page-faq {
  --faq-line: var(--graphite);
  display: block;
  background: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: 24px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    linear-gradient(135deg, rgba(255, 138, 61, 0.12) 0%, rgba(255, 138, 61, 0) 40%),
    radial-gradient(760px 360px at 92% 4%, rgba(41, 224, 200, 0.12), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-faq .faq-hero-copy {
  display: flex;
  flex-direction: column;
  gap: 16px;
  min-width: 0;
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  margin-right: 10px;
  color: var(--graphite);
}

.page-faq .breadcrumbs a {
  color: var(--muted);
  text-decoration: none;
}

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

.page-faq .faq-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(28px, 7vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-weight: 800;
  color: var(--mist);
  max-width: 16ch;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

.page-faq .faq-hero-figure {
  margin: 0;
  aspect-ratio: 3 / 2;
  position: relative;
}

.page-faq .faq-hero-figure::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 4px;
  background: linear-gradient(90deg, var(--orange), var(--cyan) 55%, var(--violet));
  opacity: 0.9;
  pointer-events: none;
}

/* ---------- 分类跳转 ---------- */
.page-faq .faq-jump-section {
  padding-top: 8px;
}

.page-faq .faq-jump {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-jump-item {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 14px 16px;
  background: var(--slate);
  text-decoration: none;
  transition: background 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .faq-jump-item:hover,
.page-faq .faq-jump-item:focus-visible {
  background: var(--slate-2);
  box-shadow: inset 3px 0 0 var(--cyan), var(--glow-cyan);
  outline: none;
}

.page-faq .faq-jump-label {
  font-family: var(--font-head);
  font-size: 15px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-jump-desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--muted);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  position: relative;
}

.page-faq .faq-group + .faq-group {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-group-head {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px 20px;
  padding-bottom: 18px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group-head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 88px;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), var(--cyan));
}

.page-faq .faq-group-headtext {
  min-width: 0;
}

.page-faq .faq-group-head .section-title {
  margin: 0 0 6px;
}

.page-faq .faq-group-head .section-sub {
  margin: 0;
}

.page-faq .faq-group-arrow {
  display: none;
  color: var(--cyan);
  line-height: 0;
}

.page-faq .faq-group-intro {
  margin: 0 0 24px;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 问答折叠 ---------- */
.page-faq .faq-list {
  border: 1px solid var(--faq-line);
  background: var(--slate);
  border-radius: 2px;
  overflow: hidden;
}

.page-faq .faq-list--after-index {
  margin-top: 28px;
}

.page-faq .faq-item {
  position: relative;
  transition: background 180ms var(--ease);
}

.page-faq .faq-item + .faq-item {
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-item[open] {
  background: var(--slate-2);
}

.page-faq .faq-q {
  position: relative;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 12px;
  padding: 16px 16px 16px 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--mist);
  transition: color 180ms var(--ease);
}

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

.page-faq .faq-q::marker {
  content: "";
}

.page-faq .faq-q::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 180ms var(--ease);
}

.page-faq .faq-item[open] > .faq-q::before {
  background: var(--orange);
}

.page-faq .faq-q:hover {
  color: #fff;
}

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

.page-faq .faq-q-num {
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--orange);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .faq-q-mark {
  position: relative;
  width: 16px;
  height: 16px;
  align-self: center;
  flex: none;
}

.page-faq .faq-q-mark::before,
.page-faq .faq-q-mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-q-mark::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .faq-q-mark::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

.page-faq .faq-item[open] .faq-q-mark::before {
  background: var(--cyan);
}

.page-faq .faq-item[open] .faq-q-mark::after {
  transform: scaleY(0);
}

.page-faq .faq-a {
  padding: 0 18px 20px 20px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
  max-width: 62ch;
}

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

.page-faq .faq-a a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 189, 245, 0.4);
}

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

/* ---------- 栏目索引 ---------- */
.page-faq .faq-index {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-index-item {
  position: relative;
  padding: 16px 18px 16px 20px;
  background: var(--slate);
  transition: background 180ms var(--ease), box-shadow 180ms var(--ease);
}

.page-faq .faq-index-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: transparent;
  transition: background 180ms var(--ease);
}

.page-faq .faq-index-item:hover {
  background: var(--slate-2);
}

.page-faq .faq-index-item:hover::before {
  background: var(--cyan);
}

.page-faq .faq-index-name {
  margin: 0 0 6px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
  letter-spacing: -0.01em;
}

.page-faq .faq-index-name a {
  color: inherit;
  text-decoration: none;
}

.page-faq .faq-index-name a:hover,
.page-faq .faq-index-name a:focus-visible {
  color: var(--cyan);
}

.page-faq .faq-index-desc {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 安卓端分栏与步骤 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  align-items: start;
}

.page-faq .faq-split-main {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.page-faq .faq-split-side {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.page-faq .faq-steps {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 0;
  list-style: none;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
}

.page-faq .faq-step {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 18px;
  background: var(--slate);
  transition: box-shadow 180ms var(--ease), background 180ms var(--ease);
}

.page-faq .faq-step::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 2px;
  background: linear-gradient(90deg, var(--orange), rgba(255, 138, 61, 0));
}

.page-faq .faq-step:nth-child(2)::after {
  background: linear-gradient(90deg, var(--cyan), rgba(41, 224, 200, 0));
}

.page-faq .faq-step:nth-child(3)::after {
  background: linear-gradient(90deg, var(--violet), rgba(122, 91, 255, 0));
}

.page-faq .faq-step:hover {
  background: var(--slate-2);
  box-shadow: var(--glow-cyan);
}

.page-faq .faq-step-icon {
  line-height: 0;
  color: var(--cyan);
  margin-bottom: 4px;
}

.page-faq .faq-step:nth-child(1) .faq-step-icon {
  color: var(--orange);
}

.page-faq .faq-step:nth-child(3) .faq-step-icon {
  color: var(--violet);
}

.page-faq .faq-step-num {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--muted);
}

.page-faq .faq-step-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  color: var(--mist);
}

.page-faq .faq-step-text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

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

.page-faq .faq-android-figure .figure-cap {
  font-family: var(--font-body);
}

.page-faq .faq-side-note {
  margin: 0;
}

.page-faq .faq-side-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta-panel {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: flex-start;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-cta-panel::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--orange), var(--cyan) 55%, var(--violet));
}

.page-faq .faq-cta-title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(20px, 5vw, 28px);
  line-height: 1.3;
  letter-spacing: -0.01em;
  font-weight: 800;
  color: var(--mist);
}

.page-faq .faq-cta-text {
  margin: 0;
  max-width: 56ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 4px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-jump {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-q {
    padding: 18px 20px 18px 22px;
    font-size: 17px;
    gap: 14px;
  }

  .page-faq .faq-a {
    padding: 0 22px 22px 68px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-group-arrow {
    display: block;
  }

  .page-faq .faq-jump {
    grid-template-columns: repeat(5, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding-top: 36px;
  }

  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

  .page-faq .faq-lead {
    font-size: 17px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 44px;
  }

  .page-faq .faq-split-side {
    position: sticky;
    top: 96px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero-figure {
    margin-right: -24px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump-item,
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q::before,
  .page-faq .faq-q-mark::before,
  .page-faq .faq-q-mark::after,
  .page-faq .faq-index-item,
  .page-faq .faq-step {
    transition: none;
  }
}