.page-faq {
  --faq-no-w: 30px;
  --faq-pad: clamp(16px, 3vw, 26px);
  display: block;
}

@media (min-width: 720px) {
  .page-faq {
    --faq-no-w: 52px;
  }
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  display: grid;
  gap: clamp(28px, 4vw, 48px);
  padding: clamp(22px, 4vw, 52px) 0 clamp(34px, 5vw, 68px);
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.45fr) minmax(268px, 0.8fr);
    align-items: end;
    padding-bottom: clamp(52px, 6vw, 92px);
  }
}

.page-faq .faq-hero__eyebrow {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-hero__no {
  padding-right: 12px;
  border-right: 1px solid var(--line-2);
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(30px, 5.4vw, 54px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-hero__lede {
  max-width: 46ch;
  color: var(--steel);
}

/* ---------- 关键词过滤 ---------- */

.page-faq .faq-filter {
  max-width: 520px;
  margin-top: clamp(24px, 3vw, 34px);
}

.page-faq .faq-filter__label {
  display: block;
  margin-bottom: 8px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-filter__input {
  width: 100%;
  padding: 12px 14px;
  background: rgba(15, 42, 34, 0.62);
  border: 1px solid var(--line-2);
  border-radius: var(--radius);
  color: var(--mist);
  font-family: var(--sans);
  font-size: 15px;
  line-height: 1.5;
  transition: border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}

.page-faq .faq-filter__input::placeholder {
  color: var(--mid);
}

.page-faq .faq-filter__input:focus {
  outline: none;
  border-color: var(--cyan);
  box-shadow: 0 0 0 2px rgba(43, 227, 200, 0.22);
}

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

.page-faq .faq-filter__hint {
  margin: 8px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--steel);
}

/* ---------- 分组速览面板 ---------- */

.page-faq .faq-quick {
  padding: var(--faq-pad);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(22, 64, 52, 0.55), rgba(16, 20, 19, 0.6));
  box-shadow: var(--shadow-2);
}

.page-faq .faq-quick__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-quick__list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-quick__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 11px 8px;
  border-bottom: 1px solid var(--line-3);
  color: var(--mist);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  background: var(--turf-2);
  color: var(--cyan);
}

.page-faq .faq-quick__no {
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-quick__name {
  min-width: 0;
  font-size: 15px;
  line-height: 1.5;
}

.page-faq .faq-quick__count {
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
}

.page-faq .faq-quick__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--mid);
}

/* ---------- 顶部横向视觉带 ---------- */

.page-faq .faq-band {
  position: relative;
  margin: 0 0 clamp(48px, 7vw, 104px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-band .mx-figure__img,
.page-faq .faq-band img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: clamp(170px, 24vw, 300px);
  object-fit: cover;
  opacity: 0.52;
}

.page-faq .faq-band__cap {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  padding: 26px var(--faq-pad) 12px;
  background: linear-gradient(180deg, rgba(16, 20, 19, 0), rgba(16, 20, 19, 0.92));
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

/* ---------- 分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--head-h) + 24px);
  padding-bottom: clamp(44px, 6vw, 76px);
}

.page-faq .faq-group + .faq-group {
  padding-top: clamp(20px, 3vw, 36px);
}

.page-faq .faq-group__band {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 0;
  border-top: 1px solid var(--line-2);
  border-bottom: 1px solid var(--line-3);
}

.page-faq .faq-group__band::before {
  content: "";
  flex: none;
  width: 34px;
  height: 2px;
  background: linear-gradient(90deg, var(--cyan), var(--orange));
}

.page-faq .faq-group__no {
  flex: none;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-group__name {
  margin: 0;
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--mist);
}

.page-faq .faq-group__count {
  margin-left: auto;
  flex: none;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--steel);
}

.page-faq .faq-group__lede {
  max-width: 56ch;
  margin: 18px 0 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--steel);
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-q {
  border-bottom: 1px solid var(--line-3);
}

.page-faq .faq-q__summary {
  display: grid;
  grid-template-columns: var(--faq-no-w) minmax(0, 1fr) 18px;
  column-gap: 12px;
  align-items: start;
  padding: 17px 4px;
  cursor: pointer;
  list-style: none;
  transition: background-color var(--dur) var(--ease);
}

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

.page-faq .faq-q__summary:hover {
  background: rgba(22, 64, 52, 0.42);
}

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

.page-faq .faq-q__no {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--steel);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-q__text {
  min-width: 0;
  font-size: 16px;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .faq-q__mark {
  position: relative;
  width: 18px;
  height: 18px;
  margin-top: 3px;
}

.page-faq .faq-q__mark::before,
.page-faq .faq-q__mark::after {
  content: "";
  position: absolute;
  background: var(--steel);
  transition: transform var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-q__mark::before {
  left: 0;
  right: 0;
  top: 8px;
  height: 1px;
}

.page-faq .faq-q__mark::after {
  top: 0;
  bottom: 0;
  left: 8px;
  width: 1px;
}

.page-faq .faq-q[open] .faq-q__no {
  color: var(--cyan);
}

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

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

.page-faq .faq-q__body {
  position: relative;
  padding: 2px 4px 22px calc(var(--faq-no-w) + 6px);
}

.page-faq .faq-q__body::before {
  content: "";
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 24px;
  width: 2px;
  background: var(--cyan);
  opacity: 0;
  transition: opacity var(--dur) var(--ease);
}

.page-faq .faq-q[open] .faq-q__body::before {
  opacity: 1;
}

.page-faq .faq-q__body > p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--steel);
}

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

@media (min-width: 960px) {
  .page-faq .faq-q__body > p {
    max-width: 62ch;
  }
}

/* ---------- 展开细读 ---------- */

.page-faq .faq-q__more {
  margin-top: 12px;
  padding-top: 10px;
  border-top: 1px dashed var(--line-2);
}

.page-faq .faq-q__more > summary {
  cursor: pointer;
  list-style: none;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-q__more > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-q__more > summary::before {
  content: "+ ";
}

.page-faq .faq-q__more[open] > summary::before {
  content: "– ";
}

.page-faq .faq-q__more > p {
  margin: 10px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 行内链接 ---------- */

.page-faq .faq-link {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-2);
  transition: border-color var(--dur) var(--ease);
}

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

/* ---------- 归档分组：问答 + 步骤图 ---------- */

@media (min-width: 960px) {
  .page-faq .faq-group--split .faq-group__inner {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(240px, 300px);
    column-gap: clamp(28px, 4vw, 52px);
    align-items: start;
  }

  .page-faq .faq-group__figure {
    position: sticky;
    top: calc(var(--head-h) + 24px);
  }
}

.page-faq .faq-group__figure {
  margin: clamp(24px, 4vw, 34px) 0 0;
}

.page-faq .faq-group__figure .mx-figure__img,
.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  object-fit: cover;
}

.page-faq .faq-group__figure .mx-figure__cap {
  margin-top: 10px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-q__summary,
  .page-faq .faq-q__mark::before,
  .page-faq .faq-q__mark::after,
  .page-faq .faq-q__body::before,
  .page-faq .faq-quick__link,
  .page-faq .faq-filter__input {
    transition: none;
  }
}