.page-faq {
  --faq-panel: #0F2A22;
  --faq-edge: rgba(37, 242, 192, .38);
  --faq-shadow: 5px 5px 0 rgba(0, 0, 0, .5);
  --faq-text: #CBD9D3;
  background:
    radial-gradient(circle at 86% -6%, rgba(37, 242, 192, .14), transparent 46%),
    var(--ink-900);
  color: var(--chalk);
  font-family: var(--font-body);
  line-height: 1.75;
  padding-bottom: 72px;
}

.page-faq .breadcrumb {
  margin-top: 22px;
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 34px;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--mint), var(--amber) 52%, var(--alert));
  transform: skewY(-0.7deg);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-hero__kicker {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--mint);
}

.page-faq h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 7.4vw, 56px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--chalk);
}

.page-faq .faq-hero__desc {
  margin: 0;
  max-width: 60ch;
  font-size: 15px;
  color: var(--mist);
}

.page-faq .faq-hero__aside {
  border: 2px solid var(--line);
  border-left: 4px solid var(--mint);
  background: var(--ink-800);
  padding: 18px 20px;
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-hero__aside-key {
  margin: 0 0 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--mist);
}

.page-faq .faq-hero__aside-val {
  margin: 0 0 14px;
  font-size: 15px;
  color: var(--chalk);
}

.page-faq .faq-hero__aside-val:last-child {
  margin-bottom: 0;
}

/* ---------- 关键词查找 ---------- */

.page-faq .faq-search {
  position: sticky;
  top: 0;
  z-index: 30;
  margin: 0 0 22px;
  padding: 14px 16px 16px;
  border: 3px solid var(--line);
  background: var(--ink-800);
  box-shadow: var(--shadow-hard);
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--mint);
}

.page-faq .faq-search__box {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  border: 2px solid var(--line);
  background: var(--ink-900);
  transition: border-color .18s ease, box-shadow .18s ease;
}

.page-faq .faq-search__box:focus-within {
  border-color: var(--mint);
  box-shadow: 0 0 0 3px rgba(37, 242, 192, .22);
}

.page-faq .faq-search__icon {
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  color: var(--mint);
}

.page-faq .faq-search__input {
  flex: 1 1 auto;
  min-width: 0;
  padding: 13px 0;
  border: 0;
  background: transparent;
  color: var(--chalk);
  font-family: var(--font-body);
  font-size: 15px;
  outline: none;
}

.page-faq .faq-search__input::placeholder {
  color: var(--mist);
  opacity: .85;
}

.page-faq .faq-search__hint {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

/* ---------- 分组索引 ---------- */

.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 28px;
}

.page-faq .faq-index__link {
  display: inline-block;
  padding: 7px 12px;
  border: 2px solid var(--line);
  background: var(--ink-800);
  color: var(--mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-decoration: none;
  transition: color .18s ease, background-color .18s ease, border-color .18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--ink-900);
  background: var(--mint);
  border-color: var(--mint);
  outline: none;
}

.page-faq .faq-index__link.is-active {
  color: var(--ink-900);
  background: var(--mint-soft);
  border-color: var(--mint-soft);
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  padding: 26px 0 10px;
  border-top: 2px solid var(--line);
  scroll-margin-top: 96px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 18px;
}

.page-faq .faq-group__tag {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--alert);
}

.page-faq .faq-group__tag::before {
  content: "";
  display: inline-block;
  width: 22px;
  height: 3px;
  background: var(--alert);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(21px, 4.4vw, 30px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

/* ---------- 单条问答 ---------- */

.page-faq .qa {
  margin-bottom: 10px;
  border: 2px solid var(--line);
  background: var(--ink-800);
  transition: border-color .2s ease, background-color .2s ease, box-shadow .2s ease;
}

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

.page-faq .qa__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--chalk);
}

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

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--mint);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2013";
  color: var(--alert);
}

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

.page-faq .qa__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--mint);
}

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

.page-faq .qa__a {
  padding: 16px 16px 22px;
  border-top: 1px dashed var(--line);
  font-size: 14.5px;
  color: var(--faq-text);
}

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

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

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

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

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

/* ---------- 步骤条 ---------- */

.page-faq .steps {
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
  counter-reset: faqstep;
}

.page-faq .steps li {
  counter-increment: faqstep;
  position: relative;
  margin: 0 0 12px;
  padding: 0 0 0 40px;
  line-height: 1.7;
}

.page-faq .steps li:last-child {
  margin-bottom: 0;
}

.page-faq .steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 2px 5px;
  background: var(--mint);
  color: var(--ink-900);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
}

/* ---------- 提示条 ---------- */

.page-faq .faq-alert {
  margin: 14px 0 0;
  padding: 10px 14px;
  border-left: 4px solid var(--alert);
  background: rgba(255, 91, 46, .1);
  font-size: 13.5px;
  color: var(--chalk);
}

/* ---------- 对照表 ---------- */

.page-faq .faq-compare {
  margin: 16px 0 0;
  border: 2px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-compare__row {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-compare__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-compare__key {
  font-size: 14px;
  color: var(--chalk);
}

.page-faq .faq-compare__val {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-compare__val--ok {
  color: var(--mint);
}

.page-faq .faq-compare__val--warn {
  color: var(--amber);
}

/* ---------- 配图与设备示意 ---------- */

.page-faq .faq-figure {
  margin: 16px 0 0;
  padding: 8px;
  border: 2px solid var(--line);
  background: var(--ink-900);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.9) brightness(.86) contrast(1.08);
}

.page-faq .faq-figure figcaption {
  padding: 8px 4px 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--mist);
}

.page-faq .faq-device {
  display: block;
  width: 100%;
  max-width: 230px;
  height: auto;
  margin: 16px 0 0;
}

/* ---------- 断点 ---------- */

@media (min-width: 640px) {
  .page-faq .faq-compare__row {
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 16px;
  }

  .page-faq .qa__a {
    padding-left: 58px;
  }
}

@media (min-width: 900px) {
  .page-faq {
    padding-bottom: 96px;
  }

  .page-faq .faq-hero {
    padding: 40px 0 46px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: 8fr 4fr;
    align-items: end;
    gap: 40px;
  }

  .page-faq .faq-search {
    padding: 18px 22px 20px;
  }

  .page-faq .faq-group {
    padding-top: 34px;
  }

  .page-faq .faq-group__head {
    flex-direction: row;
    align-items: baseline;
    gap: 18px;
  }

  .page-faq .faq-group__tag {
    min-width: 150px;
  }

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

  .page-faq .qa__a {
    padding: 18px 20px 24px 68px;
    font-size: 15px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 8fr 3fr;
  }

  .page-faq .faq-device {
    max-width: 260px;
  }
}

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

  .page-faq .faq-hero::after {
    transform: none;
  }
}