.page-faq {
  --faq-line: rgba(126, 230, 240, .16);
  --faq-line-strong: rgba(126, 230, 240, .32);
  --faq-card-bg: linear-gradient(150deg, rgba(12, 36, 56, .72), rgba(5, 18, 31, .94));
  --faq-radius: 22px;
  --faq-pad: clamp(18px, 2.6vw, 30px);
  padding-block: 0 96px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin: 28px auto 40px;
  font-size: 12px;
  letter-spacing: .12em;
  color: rgba(234, 246, 250, .62);
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-faq .breadcrumb a {
  color: var(--aqua-300);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .22s ease;
}
.page-faq .breadcrumb a:hover {
  border-bottom-color: var(--aqua-300);
}
.page-faq .breadcrumb span[aria-hidden="true"] {
  color: rgba(126, 230, 240, .42);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-block: 8px 36px;
}
.page-faq .faq-title {
  font-size: clamp(34px, 6.2vw, 76px);
  font-weight: 200;
  line-height: 1.06;
  letter-spacing: -.02em;
  margin: 16px 0 20px;
  max-width: 15ch;
  color: var(--read-dark);
}
.page-faq .faq-lead {
  max-width: 62ch;
  font-size: clamp(15px, 1.3vw, 17px);
  line-height: 1.85;
  color: rgba(234, 246, 250, .78);
  margin: 0 0 32px;
}

/* 检索框 */
.page-faq .faq-search {
  max-width: 560px;
  margin-bottom: 34px;
}
.page-faq .faq-search-input {
  width: 100%;
  box-sizing: border-box;
  font: inherit;
  font-size: 15px;
  color: var(--read-dark);
  background: rgba(12, 36, 56, .7);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  padding: 16px 24px;
  outline: none;
  transition: border-color .3s ease, box-shadow .3s ease, background .3s ease;
  -webkit-appearance: none;
  appearance: none;
}
.page-faq .faq-search-input::placeholder {
  color: rgba(234, 246, 250, .42);
}
.page-faq .faq-search-input:focus {
  border-color: var(--aqua-500);
  background: rgba(12, 36, 56, .92);
  box-shadow: 0 0 0 8px rgba(22, 193, 214, .14);
}

/* 首屏统计条 */
.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 34px;
  list-style: none;
  padding: 0;
  margin: 0;
}
.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 9px;
}
.page-faq .faq-stat .stat-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--aqua-500);
}
.page-faq .faq-stat-label {
  font-size: 13px;
  color: rgba(234, 246, 250, .58);
  letter-spacing: .04em;
}

/* ---------- 分类索引条 ---------- */
.page-faq .faq-cats {
  display: flex;
  gap: 10px;
  overflow-x: auto;
  padding: 4px 0 16px;
  margin-bottom: 52px;
  scrollbar-width: thin;
  scrollbar-color: rgba(22, 193, 214, .4) transparent;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-cats::-webkit-scrollbar {
  height: 4px;
}
.page-faq .faq-cats::-webkit-scrollbar-thumb {
  background: rgba(22, 193, 214, .4);
  border-radius: 2px;
}
.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  padding: 11px 20px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  background: rgba(12, 36, 56, .55);
  color: var(--read-dark);
  text-decoration: none;
  white-space: nowrap;
  font-size: 14px;
  transition: border-color .24s ease, background .24s ease, transform .24s ease;
}
.page-faq .faq-cat:hover {
  border-color: var(--aqua-500);
  background: rgba(22, 193, 214, .14);
  transform: translateY(-2px);
}
.page-faq .faq-cat--alt {
  border-color: rgba(255, 107, 74, .35);
}
.page-faq .faq-cat--alt:hover {
  border-color: var(--coral-500);
  background: rgba(255, 107, 74, .14);
}
.page-faq .cat-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--aqua-300);
}
.page-faq .faq-cat--alt .cat-num {
  color: var(--coral-500);
}
.page-faq .cat-name {
  font-weight: 500;
}

/* ---------- 栏目区块 ---------- */
.page-faq .faq-section {
  margin-bottom: 76px;
  scroll-margin-top: 116px;
}
.page-faq .faq-section-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 18px;
  align-items: start;
  padding-bottom: 20px;
  margin-bottom: 26px;
  border-bottom: 1px solid var(--faq-line);
}
.page-faq .section-num {
  font-family: var(--font-mono);
  font-size: clamp(24px, 3vw, 34px);
  font-weight: 300;
  letter-spacing: .02em;
  color: var(--aqua-500);
  line-height: 1;
  padding-top: 6px;
}
.page-faq .faq-section-head .section-title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 300;
  letter-spacing: -.01em;
  margin: 0 0 8px;
  color: var(--read-dark);
}
.page-faq .faq-section-sub {
  font-size: 14px;
  line-height: 1.72;
  color: rgba(234, 246, 250, .62);
  margin: 0;
  max-width: 62ch;
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0 0 24px;
  border-radius: var(--faq-radius);
  overflow: hidden;
  border: 1px solid var(--faq-line);
  background: rgba(12, 36, 56, .55);
  position: relative;
}
.page-faq .faq-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(22, 193, 214, .16), rgba(5, 18, 31, .6) 72%);
  pointer-events: none;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}

/* 图文并排 */
.page-faq .faq-split {
  display: grid;
  gap: 22px;
}
@media (min-width: 900px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, .92fr) minmax(0, 1.18fr);
    align-items: start;
    gap: 38px;
  }
  .page-faq .faq-split .faq-figure {
    margin-bottom: 0;
    position: sticky;
    top: 108px;
  }
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 12px;
}
.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--faq-radius);
  background: var(--faq-card-bg);
  overflow: hidden;
  transition: border-color .28s ease, box-shadow .28s ease;
}
.page-faq .faq-item[open] {
  border-color: var(--faq-line-strong);
  box-shadow: 0 20px 42px -30px rgba(22, 193, 214, .55);
}
.page-faq .faq-item summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: baseline;
  padding: 20px 24px;
  font-size: clamp(15px, 1.4vw, 17px);
  color: var(--read-dark);
  transition: padding .3s ease;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--aqua-500);
  outline-offset: -4px;
  border-radius: var(--faq-radius);
}
.page-faq .faq-qnum {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--aqua-300);
  align-self: center;
}
.page-faq .faq-qtext {
  font-weight: 500;
  line-height: 1.52;
  letter-spacing: .004em;
}
.page-faq .faq-chevron {
  position: relative;
  width: 14px;
  height: 14px;
  align-self: center;
  flex: 0 0 auto;
}
.page-faq .faq-chevron::before,
.page-faq .faq-chevron::after {
  content: "";
  position: absolute;
  background: var(--aqua-300);
  border-radius: 1px;
  transition: transform .3s ease, opacity .3s ease;
}
.page-faq .faq-chevron::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}
.page-faq .faq-chevron::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}
.page-faq .faq-item[open] .faq-chevron::after {
  transform: scaleY(0);
  opacity: 0;
}
.page-faq .faq-item[open] summary {
  padding-bottom: 8px;
}
.page-faq .faq-answer {
  position: relative;
  padding: 4px 26px 26px 62px;
  font-size: 15px;
  line-height: 1.9;
  color: rgba(234, 246, 250, .78);
}
.page-faq .faq-answer::before {
  content: "";
  position: absolute;
  left: 22px;
  top: 8px;
  bottom: 26px;
  width: 3px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--aqua-500), rgba(22, 193, 214, .12));
}
.page-faq .faq-answer p {
  margin: 0;
}

/* ---------- 联系区块 ---------- */
.page-faq .faq-contact {
  margin-top: 32px;
}
.page-faq .faq-contact-card {
  display: grid;
  gap: 28px;
  padding: clamp(26px, 3.4vw, 48px);
  border-radius: var(--radius-xl);
  background: linear-gradient(150deg, var(--paper-100), var(--paper-300));
  color: var(--read-paper);
  border: 1px solid var(--paper-300);
  position: relative;
  overflow: hidden;
}
.page-faq .faq-contact-card::before {
  content: "";
  position: absolute;
  top: -40%;
  right: -12%;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(22, 193, 214, .22), transparent 68%);
  pointer-events: none;
}
.page-faq .faq-contact-copy {
  position: relative;
}
.page-faq .faq-contact-card .eyebrow {
  color: var(--coral-500);
  margin: 0 0 10px;
}
.page-faq .faq-contact-card .section-title {
  font-size: clamp(22px, 3vw, 34px);
  font-weight: 300;
  letter-spacing: -.01em;
  margin: 0 0 16px;
  color: var(--read-paper);
}
.page-faq .faq-contact-card p {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.86;
  color: rgba(16, 32, 46, .82);
  max-width: 60ch;
}
.page-faq .faq-contact-card p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-contact-card .text-link {
  color: var(--coral-500);
  font-family: var(--font-mono);
  font-size: 14px;
  text-decoration: none;
  border-bottom: 1px dashed currentColor;
}
.page-faq .faq-contact-card .text-link:hover {
  color: #d94f2e;
}
.page-faq .contact-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--read-paper);
  letter-spacing: .01em;
}
.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: end;
}
@media (min-width: 860px) {
  .page-faq .faq-contact-card {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    align-items: end;
    gap: 44px;
  }
}

/* ---------- 窄屏适配 ---------- */
@media (max-width: 640px) {
  .page-faq {
    padding-block: 0 64px;
  }
  .page-faq .breadcrumb {
    margin: 18px auto 26px;
  }
  .page-faq .faq-title {
    max-width: 100%;
  }
  .page-faq .faq-cats {
    margin-bottom: 36px;
  }
  .page-faq .faq-section {
    margin-bottom: 56px;
  }
  .page-faq .faq-section-head {
    gap: 12px;
  }
  .page-faq .faq-item summary {
    padding: 17px 16px;
    gap: 10px;
  }
  .page-faq .faq-answer {
    padding: 2px 16px 22px 42px;
  }
  .page-faq .faq-answer::before {
    left: 16px;
  }
  .page-faq .faq-contact-actions .btn {
    flex: 1 1 100%;
  }
}

/* ---------- 动效偏好 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-search-input,
  .page-faq .faq-cat,
  .page-faq .faq-item,
  .page-faq .faq-chevron::before,
  .page-faq .faq-chevron::after {
    transition: none !important;
  }
}