.page-faq {
  --faq-open-bg: rgba(47, 240, 200, 0.07);
  --faq-hover-bg: rgba(126, 155, 179, 0.08);
  --faq-amber-bg: rgba(255, 164, 60, 0.06);
  --faq-gap: clamp(32px, 5vw, 56px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(24px, 4vw, 48px) 0 clamp(16px, 2.5vw, 24px);
}

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

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  margin: 0;
  color: var(--text-soft);
}

.page-faq .faq-hero__figure {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  background: var(--ink-blue);
  overflow: hidden;
}

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

.page-faq .faq-hero__figure figcaption {
  padding: 11px 16px;
  border-top: 1px solid var(--ink-line);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 主布局：左窄栏 + 右宽区 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--faq-gap);
  padding: clamp(28px, 4vw, 48px) 0 clamp(44px, 6vw, 88px);
  border-top: 1px solid var(--ink-line);
  margin-top: clamp(28px, 4vw, 48px);
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 236px) minmax(0, 1fr);
    gap: clamp(44px, 6vw, 92px);
  }
}

/* ---------- 左栏索引 ---------- */
.page-faq .faq-rail__inner {
  display: flex;
  flex-direction: column;
  gap: 26px;
}

@media (min-width: 900px) {
  .page-faq .faq-rail__inner {
    position: sticky;
    top: calc(var(--hdr-h) + 28px);
  }
}

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

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 12px;
  align-items: baseline;
  padding: 11px 2px;
  border-bottom: 1px solid var(--ink-line);
  color: var(--text-soft);
  text-decoration: none;
  font-size: 15px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

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

.page-faq .faq-index__link:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-faq .faq-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-tag {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 0 14px;
  font-size: 12.5px;
  letter-spacing: 0.05em;
  color: var(--mist);
  background: var(--ink-step);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-tag:hover,
.page-faq .faq-tag:focus-visible {
  color: var(--ink-abyss);
  background: var(--amber);
  border-color: var(--amber);
}

.page-faq .faq-tag:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: 2px;
}

.page-faq .faq-rail__links {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  font-size: 14px;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 60px);
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding-bottom: 16px;
  margin-bottom: 18px;
  border-bottom: 1px solid var(--ink-line);
}

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

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-faq .faq-item {
  border: 1px solid var(--ink-line);
  border-left: 2px solid var(--ink-line);
  border-radius: var(--radius);
  background: var(--ink-blue);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .faq-item:hover {
  border-left-color: var(--mist);
  background: var(--faq-hover-bg);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
  background-image: linear-gradient(90deg, var(--faq-open-bg) 0%, rgba(6, 15, 27, 0) 58%);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px 14px;
  min-height: 56px;
  padding: 14px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--snow);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .faq-item__q:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 0.04em;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  justify-self: end;
}

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

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 1px;
  height: 14px;
}

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

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

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

.page-faq .faq-item__a {
  padding: 0 18px 20px;
  color: var(--text-soft);
  font-size: 15.5px;
  line-height: 1.75;
  animation: faq-reveal 220ms var(--ease);
}

.page-faq .faq-item__a p {
  margin: 0;
}

@media (min-width: 620px) {
  .page-faq .faq-item__a {
    padding-left: 46px;
  }
}

@keyframes faq-reveal {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 区块配图 ---------- */
.page-faq .faq-figure {
  margin: 18px 0 0;
  max-width: 520px;
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  overflow: hidden;
}

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

/* ---------- 内联提示 ---------- */
.page-faq .faq-prompt {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 24px;
  margin-top: 22px;
  padding: 18px 20px;
  border: 1px solid var(--ember);
  border-left: 3px solid var(--amber);
  border-radius: var(--radius);
  background: var(--faq-amber-bg);
}

.page-faq .faq-prompt__text {
  margin: 0;
  flex: 1 1 240px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-soft);
}

.page-faq .faq-prompt__link {
  white-space: nowrap;
}

/* ---------- 接着看 ---------- */
.page-faq .faq-next {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: clamp(24px, 3vw, 36px);
  border-top: 1px solid var(--ink-line);
}

.page-faq .faq-next__title {
  margin: 12px 0 20px;
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--snow);
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--ink-line);
  border: 1px solid var(--ink-line);
  border-radius: var(--radius);
  overflow: hidden;
}

@media (min-width: 760px) {
  .page-faq .faq-next__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.page-faq .faq-next__item {
  background: var(--ink-blue);
}

.page-faq .faq-next__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 44px;
  padding: 18px 18px 20px;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-next__link:hover,
.page-faq .faq-next__link:focus-visible {
  background: var(--ink-step);
  border-left-color: var(--cyan);
}

.page-faq .faq-next__link:focus-visible {
  outline: 1px solid var(--amber);
  outline-offset: -2px;
}

.page-faq .faq-next__k {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--snow);
}

.page-faq .faq-next__v {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 窄屏保护 ---------- */
@media (max-width: 600px) {
  .page-faq .faq-hero__title {
    max-width: none;
  }

  .page-faq .faq-item__q {
    gap: 8px 12px;
    padding: 14px 14px;
    font-size: 15.5px;
  }

  .page-faq .faq-item__a {
    padding: 0 14px 18px;
    font-size: 15px;
  }

  .page-faq .faq-prompt {
    padding: 16px 16px;
  }

  .page-faq .faq-rail__links {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 8px 20px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__a {
    animation: none;
  }

  .page-faq .faq-item,
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-tag,
  .page-faq .faq-index__link,
  .page-faq .faq-next__link {
    transition: none;
  }
}