.page-faq {
  --faq-muted: #4E5F6E;
  --faq-line: rgba(6, 26, 46, 0.16);
  --faq-shadow: 6px 6px 0 0 var(--ink);
  --faq-shadow-sm: 4px 4px 0 0 var(--ink);

  display: block;
  background: var(--ivory);
  color: var(--sea-deep);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  overflow-wrap: break-word;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  background: var(--ivory);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-crumbs__nav {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 16px 0;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-muted);
}

.page-faq .faq-crumbs__nav a {
  color: var(--faq-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-crumbs__nav a:hover,
.page-faq .faq-crumbs__nav a:focus-visible {
  color: var(--sea-deep);
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .faq-crumbs__nav [aria-current="page"] {
  color: var(--sea-deep);
  font-weight: 600;
}

.page-faq .faq-crumbs__sep {
  color: var(--stone);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  background: var(--sea-deep);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    90deg,
    rgba(60, 242, 222, 0.1) 0 1px,
    transparent 1px 80px
  );
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  padding-top: clamp(44px, 8vw, 92px);
  padding-bottom: clamp(32px, 5vw, 58px);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 18px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-hero__title {
  margin: 0 0 22px;
  max-width: 16ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(30px, 5.6vw, 68px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ivory);
}

.page-faq .faq-hero__lede {
  margin: 0 0 clamp(26px, 4vw, 44px);
  max-width: 64ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-hero__stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  max-width: 860px;
  background: rgba(60, 242, 222, 0.28);
  border: 1px solid rgba(60, 242, 222, 0.28);
}

.page-faq .faq-stat {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px 18px;
  background: var(--sea-deep);
  min-width: 0;
}

.page-faq .faq-stat__v {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(18px, 2.2vw, 26px);
  line-height: 1.1;
  color: var(--cyan);
}

.page-faq .faq-stat__k {
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--stone);
}

.page-faq .faq-hero__media {
  position: relative;
  z-index: 1;
  margin: 0;
  line-height: 0;
  background: var(--sea-night);
  border-top: 3px solid var(--cyan);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  max-height: 420px;
  object-fit: cover;
  opacity: 0.9;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(32px, 5vw, 56px);
  padding-top: clamp(40px, 6vw, 80px);
  padding-bottom: clamp(44px, 7vw, 96px);
  align-items: start;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__caption {
  margin: 0 0 12px;
  padding-bottom: 10px;
  border-bottom: 3px solid var(--ink);
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--faq-muted);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 5px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 11px 13px;
  text-decoration: none;
  color: var(--sea-deep);
  background: transparent;
  border: 2px solid var(--faq-line);
  transition: background 0.22s var(--ease), border-color 0.22s var(--ease),
    box-shadow 0.22s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: #ffffff;
  border-color: var(--ink);
  box-shadow: var(--faq-shadow-sm);
  outline: none;
}

.page-faq .faq-rail__no {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  font-weight: 600;
  color: var(--teal);
}

.page-faq .faq-rail__label {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 14px;
  font-weight: 500;
}

.page-faq .faq-rail__count {
  flex: 0 0 auto;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--faq-muted);
  opacity: 0.3;
  transition: opacity 0.22s var(--ease), color 0.22s var(--ease);
}

.page-faq .faq-rail__link:hover .faq-rail__count,
.page-faq .faq-rail__link:focus-visible .faq-rail__count {
  opacity: 1;
  color: var(--teal);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-groups {
  display: flex;
  flex-direction: column;
  gap: clamp(44px, 6vw, 84px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 32px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 6px 16px;
  align-items: start;
  padding-bottom: 18px;
  margin-bottom: 24px;
  border-bottom: 3px solid var(--ink);
}

.page-faq .faq-group__no {
  grid-column: 1;
  grid-row: 1 / span 2;
  margin: 0;
  padding: 3px 10px;
  background: var(--sea-deep);
  color: var(--cyan);
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: clamp(18px, 2vw, 24px);
  line-height: 1.2;
}

.page-faq .faq-group__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 30px);
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--sea-deep);
}

.page-faq .faq-group__intro {
  grid-column: 2;
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-muted);
}

/* ---------- 问题卡 ---------- */
.page-faq .faq-items {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.page-faq .faq-item {
  background: #ffffff;
  border: 3px solid var(--ink);
  box-shadow: var(--faq-shadow);
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease),
    box-shadow 0.24s var(--ease);
}

.page-faq .faq-item[data-open] {
  background: var(--sea-deep);
  border-color: var(--cyan);
  box-shadow: 6px 6px 0 0 rgba(60, 242, 222, 0.32);
}

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

.page-faq .faq-item .faq-item__btn {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  width: 100%;
  margin: 0;
  padding: 18px 20px;
  background: transparent;
  border: 0;
  border-radius: 0;
  text-align: left;
  cursor: pointer;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--sea-deep);
  transition: color 0.24s var(--ease);
}

.page-faq .faq-item .faq-item__btn:focus-visible {
  outline: 3px solid var(--teal);
  outline-offset: -3px;
}

.page-faq .faq-item[data-open] .faq-item__btn {
  color: var(--ivory);
}

.page-faq .faq-item__index {
  flex: 0 0 auto;
  padding-top: 3px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  font-size: 13px;
  color: var(--teal);
}

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

.page-faq .faq-item__q {
  flex: 1 1 auto;
  min-width: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.55;
}

.page-faq .faq-item__sign {
  position: relative;
  flex: 0 0 auto;
  width: 16px;
  height: 16px;
  margin-top: 5px;
}

.page-faq .faq-item__sign::before,
.page-faq .faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--teal);
  transition: transform 0.24s var(--ease), background 0.24s var(--ease);
}

.page-faq .faq-item__sign::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-item__sign::after {
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
}

.page-faq .faq-item[data-open] .faq-item__sign::before,
.page-faq .faq-item[data-open] .faq-item__sign::after {
  background: var(--cyan);
}

.page-faq .faq-item[data-open] .faq-item__sign::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item__panel {
  padding: 0 20px 20px;
  color: var(--text);
  font-size: 15px;
  line-height: 1.85;
}

.page-faq .faq-item__panel > p {
  margin: 0;
  padding-top: 16px;
  border-top: 1px dashed rgba(60, 242, 222, 0.4);
}

/* ---------- 答案内的高亮与链接 ---------- */
.page-faq .faq-mark {
  padding: 0 1px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--sea-deep);
  background: linear-gradient(transparent 60%, rgba(60, 242, 222, 0.7) 60%);
}

.page-faq .faq-item[data-open] .faq-mark {
  color: var(--ivory);
  background: linear-gradient(transparent 60%, rgba(60, 242, 222, 0.35) 60%);
}

.page-faq .faq-link {
  color: var(--teal);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-link:hover,
.page-faq .faq-link:focus-visible {
  color: var(--sea-deep);
  border-bottom-color: var(--cyan);
  outline: none;
}

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

.page-faq .faq-item[data-open] .faq-link:hover,
.page-faq .faq-item[data-open] .faq-link:focus-visible {
  color: var(--ivory);
}

/* ---------- 复盘配图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  border: 3px solid var(--ink);
  box-shadow: var(--faq-shadow);
  background: var(--sea-deep);
  line-height: 0;
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px;
  line-height: 1.6;
  background: var(--sea-deep);
  border-top: 2px solid var(--cyan);
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}

/* ---------- 页尾 ---------- */
.page-faq .faq-cta {
  background: var(--sea-night);
  border-top: 3px solid var(--cyan);
  padding: clamp(48px, 8vw, 96px) 0 clamp(56px, 9vw, 112px);
}

.page-faq .faq-cta__inner {
  max-width: 760px;
}

.page-faq .faq-cta__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-index);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--cyan);
}

.page-faq .faq-cta__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(24px, 3.6vw, 42px);
  line-height: 1.16;
  letter-spacing: -0.01em;
  color: var(--ivory);
}

.page-faq .faq-cta__text {
  margin: 0 0 30px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text-dim);
}

.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
}

.page-faq .faq-cta__btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 26px;
  background: var(--cyan);
  color: var(--sea-deep);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 15px;
  text-decoration: none;
  border: 3px solid var(--ink);
  box-shadow: 4px 4px 0 0 var(--ink);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-faq .faq-cta__btn:hover,
.page-faq .faq-cta__btn:focus-visible {
  transform: translate(2px, 2px);
  box-shadow: 2px 2px 0 0 var(--ink);
  outline: none;
}

.page-faq .faq-cta__ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 22px;
  background: transparent;
  color: var(--cyan);
  border: 2px solid rgba(60, 242, 222, 0.45);
  font-size: 15px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-cta__ghost:hover,
.page-faq .faq-cta__ghost:focus-visible {
  border-color: var(--cyan);
  color: var(--ivory);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (max-width: 959px) {
  .page-faq .faq-rail__list {
    display: flex;
    gap: 8px;
    overflow-x: auto;
    padding-bottom: 8px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-faq .faq-rail__list > li {
    flex: 0 0 auto;
  }

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

  .page-faq .faq-rail__count {
    opacity: 1;
  }
}

@media (min-width: 700px) {
  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: clamp(40px, 4vw, 72px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 28px;
    align-self: start;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-item .faq-item__btn {
    padding: 15px 16px;
    gap: 10px;
  }

  .page-faq .faq-item__panel {
    padding: 0 16px 18px;
  }

  .page-faq .faq-group__head {
    gap: 8px 12px;
  }

  .page-faq .faq-hero__title {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}