.page-faq {
  --faq-line: rgba(30, 74, 107, .72);
  --faq-body: rgba(242, 236, 224, .78);
  --faq-card: rgba(18, 58, 90, .42);
  padding-bottom: 96px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 26px 0 30px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero .eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--amber);
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: 30px;
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--cream);
  max-width: 20ch;
}

.page-faq .faq-hero .lede {
  margin: 16px 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin-top: 22px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--rock);
}

.page-faq .faq-stats b {
  color: var(--amber);
  font-weight: 600;
  margin-right: 2px;
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  padding: 22px 0 20px;
  border-bottom: 1px dashed var(--faq-line);
}

.page-faq .faq-toolbar-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--rock);
  margin-right: 4px;
}

.page-faq .filter-chip {
  appearance: none;
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--deck-blue);
  background: transparent;
  color: var(--rock);
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .filter-chip:hover,
.page-faq .filter-chip:focus-visible {
  color: var(--cream);
  border-color: var(--amber);
}

.page-faq .filter-chip.is-active {
  color: var(--cream);
  border-color: var(--coral);
  background: rgba(255, 107, 61, .14);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 30px;
  padding-top: 30px;
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index {
  align-self: start;
}

.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--rock);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 12px;
  border-bottom: 1px solid var(--faq-line);
  display: flex;
  gap: 8px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-index-list li {
  flex: 0 0 auto;
}

.page-faq .faq-index-list a {
  position: relative;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--faq-card);
  border: 1px solid transparent;
  color: var(--rock);
  text-decoration: none;
  font-size: 14px;
  transition: color .2s var(--ease), background-color .2s var(--ease), border-color .2s var(--ease);
}

.page-faq .faq-index-list a .mono {
  font-size: 11.5px;
  color: var(--amber);
}

.page-faq .faq-index-list a:hover,
.page-faq .faq-index-list a:focus-visible {
  color: var(--cream);
  border-color: rgba(232, 169, 60, .55);
}

.page-faq .faq-index-list a::before {
  content: none;
}

.page-faq .faq-index-note {
  margin: 16px 0 0;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--rock);
}

.page-faq .faq-index-note .mono {
  color: var(--celadon);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-group {
  margin-bottom: 44px;
  scroll-margin-top: 132px;
}

.page-faq .faq-group:last-of-type {
  margin-bottom: 34px;
}

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group-num {
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--amber);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 20px;
  line-height: 1.3;
  color: var(--cream);
}

/* ---------- 问答卡 ---------- */
.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-line);
  scroll-margin-top: 132px;
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  gap: 12px;
  align-items: baseline;
  padding: 16px 2px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 15.5px;
  line-height: 1.55;
  color: var(--cream);
  transition: color .2s var(--ease);
}

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

.page-faq .qa-q:hover {
  color: #fff;
}

.page-faq .qa-no {
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  color: var(--rock);
  letter-spacing: .04em;
  transition: color .2s var(--ease);
}

.page-faq .qa-q:hover .qa-no,
.page-faq .qa-item[open] .qa-no {
  color: var(--amber);
}

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

.page-faq .qa-icon {
  position: relative;
  width: 15px;
  height: 15px;
  align-self: center;
  flex: none;
  transition: transform .26s var(--ease);
}

.page-faq .qa-item[open] .qa-icon {
  transform: rotate(45deg);
}

.page-faq .qa-icon::before,
.page-faq .qa-icon::after {
  content: "";
  position: absolute;
  background: var(--rock);
  transition: background-color .26s var(--ease);
}

.page-faq .qa-icon::before {
  left: 0;
  top: 6.5px;
  width: 15px;
  height: 2px;
}

.page-faq .qa-icon::after {
  left: 6.5px;
  top: 0;
  width: 2px;
  height: 15px;
}

.page-faq .qa-item[open] .qa-icon::before,
.page-faq .qa-item[open] .qa-icon::after {
  background: var(--coral);
}

.page-faq .qa-a {
  padding: 0 2px 20px 33px;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .qa-a p {
  margin: 0;
}

.page-faq .qa-item[open] .qa-a {
  animation: faq-answer-in .3s var(--ease) both;
}

.page-faq .qa-a .link-arrow {
  color: var(--amber);
}

.page-faq .qa-a .link-arrow:hover {
  color: var(--coral);
}

/* 答案里的关键数字 */
.page-faq .num {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .9em;
  font-weight: 700;
  line-height: 1.3;
  padding: 0 6px;
  border-radius: 5px;
  background: var(--amber);
  color: var(--ink);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 6px 0 26px;
  padding: 0;
}

.page-faq .faq-figure .media {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--faq-line);
}

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

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.7;
  color: var(--rock);
}

/* ---------- 收尾联系区 ---------- */
.page-faq .faq-cta {
  margin-top: 12px;
  padding: 26px 22px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255, 107, 61, .38);
  background:
    radial-gradient(120% 140% at 0% 0%, rgba(255, 107, 61, .18) 0%, rgba(255, 107, 61, 0) 62%),
    linear-gradient(160deg, rgba(18, 58, 90, .78) 0%, rgba(6, 20, 32, .85) 100%);
  scroll-margin-top: 132px;
}

.page-faq .faq-cta-kicker {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-cta-title {
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 21px;
  line-height: 1.35;
  color: var(--cream);
}

.page-faq .faq-cta-text {
  margin: 14px 0 0;
  max-width: 60ch;
  font-family: var(--font-body);
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-cta-text .mono {
  color: var(--cream);
  word-break: break-all;
}

.page-faq .faq-cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px 22px;
  margin-top: 22px;
}

.page-faq .faq-cta-actions .link-arrow {
  color: var(--rock);
}

.page-faq .faq-cta-actions .link-arrow:hover {
  color: var(--cream);
}

@keyframes faq-answer-in {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: none; }
}

/* ---------- 窄屏微调 ---------- */
@media (max-width: 599px) {
  .page-faq .faq-hero h1 {
    font-size: 25px;
    max-width: none;
  }

  .page-faq .faq-hero .lede,
  .page-faq .qa-a,
  .page-faq .faq-cta-text {
    font-size: 15px;
  }

  .page-faq .qa-q {
    font-size: 15px;
    gap: 10px;
  }

  .page-faq .qa-a {
    padding-left: 0;
    padding-right: 0;
  }

  .page-faq .faq-group-title {
    font-size: 18.5px;
  }

  .page-faq .faq-cta {
    padding: 22px 16px;
  }
}

/* ---------- 桌面双栏 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 34px 0 36px;
  }

  .page-faq .faq-hero h1 {
    font-size: 42px;
    max-width: 18ch;
  }

  .page-faq .faq-hero .lede {
    font-size: 17px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 246px minmax(0, 1fr);
    gap: 52px;
    padding-top: 38px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 124px;
  }

  .page-faq .faq-index-list {
    display: block;
    border-bottom: 0;
    border-left: 1px solid var(--faq-line);
    padding: 0;
    overflow: visible;
  }

  .page-faq .faq-index-list li {
    flex: none;
  }

  .page-faq .faq-index-list a {
    display: flex;
    align-items: baseline;
    gap: 10px;
    white-space: normal;
    padding: 9px 0 9px 17px;
    border: 0;
    border-radius: 0;
    background: none;
    font-size: 15px;
  }

  .page-faq .faq-index-list a::before {
    content: "";
    position: absolute;
    left: -4px;
    top: 50%;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--celadon);
    transform: translateY(-50%) scale(0);
    transition: transform .24s var(--ease);
  }

  .page-faq .faq-index-list a:hover::before,
  .page-faq .faq-index-list a:focus-visible::before {
    transform: translateY(-50%) scale(1);
  }

  .page-faq .faq-index-list a:hover,
  .page-faq .faq-index-list a:focus-visible {
    color: var(--cream);
    border-color: transparent;
  }

  .page-faq .faq-group-title {
    font-size: 22px;
  }

  .page-faq .qa-q {
    font-size: 17px;
    padding: 18px 2px;
  }

  .page-faq .qa-a {
    font-size: 16.5px;
    padding-left: 37px;
  }

  .page-faq .faq-figure {
    margin: 8px 0 30px 37px;
  }

  .page-faq .faq-cta {
    padding: 34px 34px 32px;
  }

  .page-faq .faq-cta-title {
    font-size: 25px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item[open] .qa-a {
    animation: none;
  }

  .page-faq .qa-icon,
  .page-faq .filter-chip,
  .page-faq .faq-index-list a,
  .page-faq .faq-index-list a::before {
    transition: none;
  }
}