.page-faq {
  --faq-rail: 218px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq .breadcrumbs {
  padding-top: clamp(14px, 2.4vw, 26px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 48px) 0 clamp(16px, 3vw, 28px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(22px, 4vw, 46px);
  align-items: center;
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-title);
  font-size: clamp(27px, 5vw, 46px);
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--read);
  margin: 10px 0 15px;
}

.page-faq .faq-hero__lead {
  max-width: 58ch;
  margin: 0 0 20px;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-hero__meta-item {
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--mist);
}

.page-faq .faq-hero__meta-item b {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 19px;
  color: var(--amber);
  margin-right: 5px;
  letter-spacing: 0;
}

.page-faq .faq-hero__media {
  margin: 0;
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  background: var(--char);
}

/* ---------- 分类胶囊 ---------- */
.page-faq .cat-strip {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 10px;
  margin-top: clamp(24px, 4vw, 40px);
}

.page-faq .cat-pill {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  grid-template-areas:
    "idx name"
    "idx count"
    "note note";
  gap: 2px 10px;
  align-items: center;
  padding: 14px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--forest);
  text-decoration: none;
  transition: border-color var(--t), transform var(--t), box-shadow var(--t);
}

.page-faq .cat-pill:hover,
.page-faq .cat-pill:focus-visible {
  border-color: var(--line);
  transform: translateY(-2px);
  box-shadow: var(--shadow-1);
}

.page-faq .cat-pill__idx {
  grid-area: idx;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--cyan);
}

.page-faq .cat-pill__name {
  grid-area: name;
  font-size: 15px;
  font-weight: 700;
  color: var(--read);
}

.page-faq .cat-pill__count {
  grid-area: count;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--amber);
}

.page-faq .cat-pill__note {
  grid-area: note;
  margin-top: 8px;
  padding-top: 8px;
  border-top: 1px dashed var(--line-soft);
  font-size: 12px;
  line-height: 1.5;
  color: var(--mist);
}

/* ---------- 两栏骨架 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 4vw, 54px);
  align-items: start;
  padding-top: clamp(30px, 5vw, 62px);
}

.page-faq .faq-rail__hint {
  margin: 16px 0 0;
  padding: 14px;
  border: 1px dashed var(--line-soft);
  border-radius: var(--radius);
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 分类区块 ---------- */
.page-faq .faq-cat + .faq-cat {
  margin-top: clamp(40px, 6vw, 74px);
}

.page-faq .faq-cat__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-cat__title {
  margin: 0;
  font-family: var(--font-title);
  font-size: clamp(21px, 3vw, 29px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--read);
}

.page-faq .faq-cat__count {
  margin-left: auto;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--mist);
}

.page-faq .faq-cat__lead {
  max-width: 64ch;
  margin: 14px 0 18px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  background: var(--forest);
  transition: border-color var(--t), box-shadow var(--t), background var(--t);
}

.page-faq .qa + .qa {
  margin-top: 10px;
}

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

.page-faq .qa__q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  gap: 12px;
  align-items: center;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
}

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

.page-faq .qa__q-text {
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--read);
}

.page-faq .qa__q-tag {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
  white-space: nowrap;
}

.page-faq .qa__chev {
  width: 9px;
  height: 9px;
  flex: none;
  border-right: 1.5px solid var(--mist);
  border-bottom: 1.5px solid var(--mist);
  transform: rotate(45deg) translate(-1px, -1px);
  transition: transform var(--t), border-color var(--t);
}

.page-faq .qa[open] .qa__chev {
  transform: rotate(-135deg) translate(-1px, -1px);
  border-color: var(--cyan);
}

.page-faq .qa__a {
  padding: 0 18px 18px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .qa__a p {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .qa__a p:first-child {
  color: var(--read);
}

.page-faq .qa__a strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--amber);
}

.page-faq .qa__steps {
  counter-reset: faqstep;
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .qa__steps li {
  position: relative;
  padding-left: 30px;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .qa__steps li::before {
  counter-increment: faqstep;
  content: counter(faqstep);
  position: absolute;
  left: 0;
  top: 2px;
  width: 20px;
  height: 20px;
  border: 1px solid var(--line);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: 11px;
  line-height: 18px;
  text-align: center;
  color: var(--cyan);
}

/* ---------- 设备配图 ---------- */
.page-faq .faq-device__figure {
  margin: 18px 0 18px;
}

.page-faq .faq-device__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--char);
}

/* ---------- 延迟刻度轴 ---------- */
.page-faq .lat-axis {
  margin: 0 0 18px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 48, 42, .92), rgba(12, 31, 26, .92));
}

.page-faq .lat-axis__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  margin-bottom: 20px;
}

.page-faq .lat-axis__title {
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--cyan);
}

.page-faq .lat-axis__hint {
  margin-left: auto;
  font-size: 12.5px;
  color: var(--cinnabar-lt);
}

.page-faq .lat-axis__track {
  position: relative;
  height: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: linear-gradient(90deg,
    rgba(63, 230, 200, .34) 0%,
    rgba(63, 230, 200, .34) 58%,
    rgba(193, 80, 63, .5) 61%,
    rgba(193, 80, 63, .5) 100%);
}

.page-faq .lat-axis__mark {
  position: absolute;
  top: -7px;
  left: 60%;
  width: 2px;
  height: 22px;
  background: var(--cinnabar-lt);
}

.page-faq .lat-axis__mark span {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  margin-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cinnabar-lt);
  white-space: nowrap;
}

.page-faq .lat-axis__ticks {
  display: flex;
  justify-content: space-between;
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

/* ---------- 收尾求助 ---------- */
.page-faq .faq-help {
  margin-top: clamp(44px, 7vw, 82px);
  padding: clamp(22px, 4vw, 40px);
  border: 1px solid var(--line-amber);
  border-radius: var(--radius-lg);
  background: linear-gradient(160deg, rgba(22, 48, 42, .95), rgba(18, 22, 26, .95));
}

.page-faq .faq-help__title {
  margin: 10px 0 12px;
  font-family: var(--font-title);
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--read);
}

.page-faq .faq-help__lead {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--mist);
}

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

.page-faq .faq-help__list li {
  padding-left: 18px;
  position: relative;
  font-size: 15px;
  line-height: 1.72;
  color: var(--mist);
}

.page-faq .faq-help__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--cyan);
}

.page-faq .faq-help__list b {
  color: var(--read);
  margin-right: 6px;
}

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

.page-faq .faq-help__note {
  margin: 20px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--line-soft);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-help__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line);
}

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

/* ---------- 响应式 ---------- */
@media (max-width: 640px) {
  .page-faq .qa__q {
    grid-template-columns: minmax(0, 1fr) auto;
  }

  .page-faq .qa__q-tag {
    display: none;
  }

  .page-faq .faq-cat__count {
    margin-left: 0;
    flex-basis: 100%;
  }

  .page-faq .lat-axis__hint {
    margin-left: 0;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr);
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .cat-pill,
  .page-faq .qa,
  .page-faq .qa__chev {
    transition: none;
  }

  .page-faq .cat-pill:hover,
  .page-faq .cat-pill:focus-visible {
    transform: none;
  }
}