.page-faq {
  --faq-pad: clamp(20px, 5vw, 48px);
  background: var(--white-cold);
  color: var(--ink);
  font-family: var(--font-cn);
}

.page-faq img {
  display: block;
  max-width: 100%;
  height: auto;
}

.page-faq .wrap {
  max-width: 1080px;
  margin-inline: auto;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb.wrap {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding-top: 22px;
  padding-bottom: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-faq .breadcrumb a {
  color: var(--ink-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 120ms var(--ease), border-color 120ms var(--ease);
}

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

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  border-bottom: 1px solid var(--line);
  background: var(--white-cold);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 22px;
  padding-block: 26px 40px;
}

.page-faq .faq-hero__aside {
  border-left: 2px solid var(--cyan);
  padding-left: 14px;
}

.page-faq .faq-hero__meta {
  margin: 10px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
}

.page-faq .faq-hero__keys {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--ink-soft);
}

.page-faq .faq-hero__keys li {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  background: var(--white-paper);
}

.page-faq .faq-hero__keys .mono {
  font-weight: 700;
  color: var(--teal-ink);
}

/* ---------- 三步上手 ---------- */
.page-faq .faq-steps {
  border-bottom: 1px solid var(--line);
  background: var(--white-paper);
  padding-block: 44px 48px;
}

.page-faq .faq-steps .section__head {
  margin-bottom: 22px;
}

.page-faq .faq-steps__figure {
  margin: 0 0 26px;
  border: 1px solid var(--line);
  background: var(--green-deep);
}

.page-faq .faq-steps__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: var(--line);
  border: 1px solid var(--line);
}

.page-faq .step {
  display: flex;
  flex-direction: column;
  background: var(--white-paper);
  padding: 22px 20px 24px;
}

.page-faq .step__num {
  font-size: clamp(34px, 8vw, 50px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--green-deep);
  margin-bottom: 14px;
}

.page-faq .step:nth-child(2) .step__num {
  color: var(--red-score);
}

.page-faq .step:nth-child(3) .step__num {
  color: var(--teal-ink);
}

.page-faq .step__title {
  margin: 0 0 10px;
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.01em;
}

.page-faq .step p {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.62;
  color: var(--ink-soft);
}

.page-faq .step__link {
  align-self: flex-start;
  margin-top: auto;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--red-bright);
  padding-bottom: 2px;
  transition: color 120ms var(--ease);
}

.page-faq .step__link:hover,
.page-faq .step__link:focus-visible {
  color: var(--red-bright);
}

/* ---------- 问答控制台 ---------- */
.page-faq .faq-console {
  padding-block: 44px 48px;
}

.page-faq .faq-console .section__head {
  margin-bottom: 20px;
}

.page-faq .qa-radio {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: 0;
  opacity: 0;
  pointer-events: none;
}

.page-faq .qa-chips {
  display: flex;
  gap: 8px;
  margin-bottom: 22px;
  padding-bottom: 4px;
  overflow-x: auto;
  scroll-snap-type: x proximity;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .qa-chips .chip {
  flex: 0 0 auto;
  scroll-snap-align: start;
  cursor: pointer;
}

.page-faq #qa-all:checked ~ .qa-chips [for="qa-all"],
.page-faq #qa-ver:checked ~ .qa-chips [for="qa-ver"],
.page-faq #qa-live:checked ~ .qa-chips [for="qa-live"],
.page-faq #qa-list:checked ~ .qa-chips [for="qa-list"],
.page-faq #qa-view:checked ~ .qa-chips [for="qa-view"] {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--green-deep);
  font-weight: 500;
}

.page-faq #qa-all:focus-visible ~ .qa-chips [for="qa-all"],
.page-faq #qa-ver:focus-visible ~ .qa-chips [for="qa-ver"],
.page-faq #qa-live:focus-visible ~ .qa-chips [for="qa-live"],
.page-faq #qa-list:focus-visible ~ .qa-chips [for="qa-list"],
.page-faq #qa-view:focus-visible ~ .qa-chips [for="qa-view"] {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .qa-grid {
  display: grid;
  gap: 0;
}

/* 纯 CSS 分类过滤 */
.page-faq #qa-ver:checked ~ .qa-grid .qa-sec:not([data-cat="ver"]),
.page-faq #qa-live:checked ~ .qa-grid .qa-sec:not([data-cat="live"]),
.page-faq #qa-list:checked ~ .qa-grid .qa-sec:not([data-cat="list"]),
.page-faq #qa-view:checked ~ .qa-grid .qa-sec:not([data-cat="view"]) {
  display: none;
}

.page-faq #qa-ver:checked ~ .qa-grid .qa-index__item:not([data-cat="ver"]),
.page-faq #qa-live:checked ~ .qa-grid .qa-index__item:not([data-cat="live"]),
.page-faq #qa-list:checked ~ .qa-grid .qa-index__item:not([data-cat="list"]),
.page-faq #qa-view:checked ~ .qa-grid .qa-index__item:not([data-cat="view"]) {
  opacity: 0.3;
  pointer-events: none;
}

/* 问答分组 */
.page-faq .qa-sec {
  scroll-margin-top: 88px;
  border-top: 2px solid var(--green-field);
  padding-block: 22px 10px;
}

.page-faq .qa-sec[data-cat="live"] {
  border-top-color: var(--red-score);
}

.page-faq .qa-sec[data-cat="list"] {
  border-top-color: var(--teal-ink);
}

.page-faq .qa-sec[data-cat="view"] {
  border-top-color: var(--cyan);
}

.page-faq .qa-sec__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 12px;
}

.page-faq .qa-sec__idx {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
  background: var(--green-deep);
  padding: 3px 8px;
}

.page-faq .qa-sec__title {
  margin: 0;
  font-size: clamp(20px, 3.4vw, 26px);
  font-weight: 500;
  letter-spacing: -0.01em;
}

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

.page-faq .qa-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 0;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  line-height: 1.5;
  transition: color 120ms var(--ease);
}

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

.page-faq .qa-item__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .qa-item[open] .qa-item__q::after {
  content: "–";
  color: var(--red-score);
}

.page-faq .qa-item__q:hover .qa-item__text,
.page-faq .qa-item__q:focus-visible .qa-item__text {
  color: var(--red-bright);
}

.page-faq .qa-item__num {
  flex: 0 0 34px;
  padding-top: 4px;
  font-size: 12px;
  color: var(--lime);
}

.page-faq .qa-item__text {
  min-width: 0;
}

.page-faq .qa-item__a {
  padding-bottom: 20px;
}

.page-faq .qa-item__a p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.68;
  color: var(--ink-soft);
}

.page-faq .qa-item__a .mono {
  color: var(--ink);
  font-weight: 700;
}

/* 状态色图例 */
.page-faq .qa-fig {
  margin: 6px 0 22px;
  border: 1px solid var(--line);
  background: var(--green-deep);
}

.page-faq .qa-fig figcaption {
  padding: 10px 12px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--white-cold);
  border-top: 1px solid var(--line-soft);
}

/* 索引栏 */
.page-faq .qa-index {
  display: none;
}

.page-faq .qa-index__title {
  margin: 0 0 12px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--lime);
}

.page-faq .qa-index ul {
  display: grid;
  gap: 2px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .qa-index__item a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  font-size: 13px;
  color: var(--ink-soft);
  text-decoration: none;
  border-left: 2px solid var(--line);
  transition: color 120ms var(--ease), border-color 120ms var(--ease), background-color 120ms var(--ease);
}

.page-faq .qa-index__item a:hover,
.page-faq .qa-index__item a:focus-visible {
  color: var(--ink);
  border-left-color: var(--red-bright);
  background: var(--white-paper);
}

.page-faq .qa-index__item .mono {
  font-size: 11px;
  color: var(--teal-ink);
}

/* ---------- 还需要帮助 ---------- */
.page-faq .faq-help {
  background: var(--green-deep);
  color: var(--white-cold);
}

.page-faq .faq-help__grid {
  display: grid;
  gap: 30px;
  padding-block: 44px 48px;
}

.page-faq .faq-help .eyebrow {
  color: var(--cyan);
}

.page-faq .faq-help__title {
  margin: 10px 0 14px;
  font-size: clamp(24px, 3.2vw, 34px);
  font-weight: 300;
  letter-spacing: -0.01em;
  color: var(--white-cold);
}

.page-faq .faq-help p {
  margin: 0 0 18px;
  max-width: 60ch;
  font-size: 15px;
  line-height: 1.68;
  color: rgba(244, 247, 245, 0.82);
}

.page-faq .faq-help__list {
  display: grid;
  gap: 1px;
  margin: 0;
  padding: 1px;
  list-style: none;
  background: rgba(244, 247, 245, 0.16);
  border: 1px solid rgba(244, 247, 245, 0.16);
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 14px;
  padding: 12px 14px;
  background: var(--green-deep);
  font-size: 14px;
  line-height: 1.6;
}

.page-faq .faq-help__list .mono {
  flex: 0 0 46px;
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-help__aside {
  border-top: 1px solid rgba(244, 247, 245, 0.22);
  padding-top: 18px;
}

.page-faq .faq-help__aside-title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-help__btn {
  display: inline-block;
  margin-top: 4px;
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-help__btn:hover,
.page-faq .faq-help__btn:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--green-deep);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-next {
  border-top: 1px solid var(--line);
  background: var(--white-paper);
}

.page-faq .faq-next__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding-block: 28px;
}

.page-faq .faq-next__lead {
  margin: 0;
  font-size: 16px;
  font-weight: 500;
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .faq-next__links .btn {
  display: inline-block;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .qa-item__a {
    padding-left: 46px;
  }

  .page-faq .qa-item__num {
    flex-basis: 46px;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-steps__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 190px minmax(0, 1fr);
    gap: 48px;
    padding-block: 48px 58px;
  }

  .page-faq .faq-steps,
  .page-faq .faq-console {
    padding-block: 56px 60px;
  }

  .page-faq .qa-sec__body--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 272px;
    gap: 30px;
    align-items: start;
  }

  .page-faq .qa-fig {
    margin-top: 15px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.75fr);
    gap: 52px;
    padding-block: 56px 60px;
  }

  .page-faq .faq-help__aside {
    border-top: none;
    border-left: 1px solid rgba(244, 247, 245, 0.22);
    padding-top: 0;
    padding-left: 24px;
  }
}

@media (min-width: 1040px) {
  .page-faq .qa-grid {
    grid-template-columns: minmax(0, 1fr) 196px;
    gap: 44px;
    align-items: start;
  }

  .page-faq .qa-index {
    display: block;
    position: sticky;
    top: 88px;
    border-top: 2px solid var(--green-deep);
    padding-top: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-index__item a,
  .page-faq .qa-item__q,
  .page-faq .step__link,
  .page-faq .breadcrumb a {
    transition: none;
  }
}