.page-faq {
  --faq-rule: rgba(10, 15, 12, 0.13);
  --faq-rule-strong: rgba(10, 15, 12, 0.28);
  --faq-soft: #55605A;
  --faq-panel: #FBF8F2;
  background: var(--bone);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: clip;
}

.page-faq .breadcrumbs {
  padding-top: clamp(14px, 3vw, 22px);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: clamp(18px, 4vw, 34px) 0 0;
}

.page-faq .faq-hero__copy {
  max-width: 44rem;
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(28px, 7.4vw, 52px);
  line-height: 1.12;
  margin: 10px 0 16px;
  color: var(--ink);
}

.page-faq .faq-hero__lead {
  font-size: clamp(15px, 3.9vw, 17px);
  line-height: 1.8;
  color: var(--faq-soft);
  max-width: 34em;
  margin: 0;
}

.page-faq .faq-hero__visual {
  margin: clamp(20px, 5vw, 36px) 0 0;
  border-top: 10px solid var(--moss);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-hero__visual img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1400 / 600;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.06);
}

/* ---------- 分组导航 ---------- */
.page-faq .faq-jump {
  position: sticky;
  top: var(--chrome-top);
  z-index: 6;
  margin-top: clamp(22px, 5vw, 40px);
  background: rgba(243, 238, 226, 0.94);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-jump__inner {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 10px 0;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__inner::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-jump__link {
  flex: none;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border: 1px solid var(--faq-rule-strong);
  border-radius: 999px;
  font-size: 13px;
  line-height: 1.4;
  letter-spacing: 0.04em;
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease), color var(--t) var(--ease);
}

.page-faq .faq-jump__no {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--clay);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--clay);
  background: rgba(183, 106, 69, 0.1);
  outline: none;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group,
.page-faq .faq-terms {
  scroll-margin-top: calc(var(--chrome-top) + 68px);
  padding: clamp(34px, 8vw, 72px) 0 0;
}

.page-faq .faq-rule {
  height: 4px;
  width: min(190px, 46%);
  border-radius: 2px;
  background: var(--moss);
  margin-bottom: clamp(20px, 4vw, 34px);
}

.page-faq .faq-rule--clay {
  background: var(--clay);
  width: min(120px, 30%);
}

.page-faq .faq-group__head {
  max-width: 44rem;
}

.page-faq .faq-group__eyebrow {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--clay);
  margin: 0 0 10px;
}

.page-faq .faq-group__title {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(22px, 5.6vw, 36px);
  line-height: 1.2;
  margin: 0 0 12px;
  color: var(--ink);
}

.page-faq .faq-group__intro {
  font-size: clamp(15px, 3.9vw, 17px);
  line-height: 1.8;
  color: var(--faq-soft);
  margin: 0;
  max-width: 34em;
}

/* ---------- 问答条 ---------- */
.page-faq .faq-group__list {
  margin-top: clamp(18px, 4vw, 30px);
  border-top: 3px solid var(--faq-rule-strong);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-item__btn {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 24px;
  gap: 14px;
  align-items: start;
  width: 100%;
  padding: clamp(16px, 3.6vw, 22px) 0;
  background: none;
  border: 0;
  text-align: left;
  color: inherit;
  cursor: pointer;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(16px, 4.2vw, 18px);
  letter-spacing: -0.01em;
  line-height: 1.5;
  transition: color var(--t) var(--ease);
}

.page-faq .faq-item__btn:hover,
.page-faq .faq-item__btn:focus-visible {
  color: var(--clay);
  outline: none;
}

.page-faq .faq-item__btn[aria-expanded="true"] {
  color: var(--ink);
}

.page-faq .faq-item__icon {
  position: relative;
  width: 24px;
  height: 24px;
  margin-top: 2px;
  border: 1px solid var(--faq-rule-strong);
  border-radius: 50%;
  color: var(--ink);
  transition: border-color var(--t) var(--ease), background var(--t) var(--ease);
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: currentColor;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__icon::before {
  width: 10px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  width: 1.5px;
  height: 10px;
  transition: transform var(--t) var(--ease);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__icon {
  border-color: var(--amber);
  background: rgba(255, 179, 36, 0.16);
}

.page-faq .faq-item__btn[aria-expanded="true"] .faq-item__icon::after {
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-item__panel {
  padding: 0 0 clamp(18px, 4vw, 24px) 16px;
  border-left: 3px solid var(--clay);
  margin-bottom: 2px;
  color: var(--faq-soft);
  font-size: clamp(15px, 3.8vw, 17px);
  line-height: 1.8;
  transition: opacity var(--t) var(--ease);
}

.page-faq .faq-item__panel > p {
  margin: 0;
  max-width: 34em;
}

.page-faq .faq-item__panel[hidden] {
  display: none;
}

/* ---------- 口径组配图 ---------- */
.page-faq .faq-group__split {
  display: block;
}

.page-faq .faq-group__aside {
  margin-top: clamp(26px, 6vw, 40px);
}

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

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 1000 / 700;
  object-fit: cover;
  border-left: 8px solid var(--clay);
  filter: saturate(0.85) contrast(1.08);
}

.page-faq .faq-figure figcaption {
  margin-top: 12px;
  font-size: 13px;
  line-height: 1.75;
  color: var(--faq-soft);
  padding-left: 12px;
  border-left: 2px solid var(--faq-rule-strong);
}

/* ---------- 术语对照 ---------- */
.page-faq .faq-terms__grid {
  margin-top: clamp(18px, 4vw, 30px);
  border-top: 3px solid var(--faq-rule-strong);
}

.page-faq .faq-term {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 6px;
  padding: clamp(15px, 3.4vw, 20px) 2px;
  border-bottom: 1px solid var(--faq-rule);
  transition: background var(--t) var(--ease);
}

.page-faq .faq-term:hover {
  background: rgba(183, 106, 69, 0.07);
}

.page-faq .faq-term__key {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 14px;
  letter-spacing: 0.1em;
  color: var(--clay);
}

.page-faq .faq-term__def {
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-soft);
}

.page-faq .faq-term__link {
  justify-self: start;
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(62, 139, 255, 0.4);
  padding-bottom: 2px;
  transition: color var(--t) var(--ease), border-color var(--t) var(--ease);
}

.page-faq .faq-term__link:hover,
.page-faq .faq-term__link:focus-visible {
  color: var(--clay);
  border-color: var(--clay);
  outline: none;
}

/* ---------- 收束块 ---------- */
.page-faq .faq-next {
  margin-top: clamp(46px, 10vw, 96px);
  background: var(--pitch);
  color: var(--bone);
  padding: clamp(38px, 8vw, 68px) 0 clamp(46px, 9vw, 76px);
  position: relative;
}

.page-faq .faq-next__box {
  max-width: 46rem;
}

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

.page-faq .faq-next h2 {
  font-family: var(--font-head);
  font-weight: 700;
  letter-spacing: -0.01em;
  font-size: clamp(24px, 6vw, 38px);
  line-height: 1.18;
  margin: 0 0 14px;
  color: var(--bone);
}

.page-faq .faq-next__text {
  font-size: clamp(15px, 3.9vw, 17px);
  line-height: 1.8;
  color: var(--mist);
  margin: 0 0 24px;
  max-width: 34em;
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-term {
    grid-template-columns: 168px minmax(0, 1fr) auto;
    align-items: baseline;
    gap: 4px 20px;
  }

  .page-faq .faq-term__link {
    justify-self: end;
    opacity: 0.72;
    transition: opacity var(--t) var(--ease), color var(--t) var(--ease), border-color var(--t) var(--ease);
  }

  .page-faq .faq-term:hover .faq-term__link,
  .page-faq .faq-term__link:focus-visible {
    opacity: 1;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: clamp(32px, 5vw, 64px);
    align-items: center;
  }

  .page-faq .faq-hero__copy {
    padding-right: clamp(0px, 2vw, 24px);
  }

  .page-faq .faq-hero__visual {
    margin-top: 0;
  }

  .page-faq .faq-group__split {
    display: grid;
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .faq-group__aside {
    margin-top: clamp(18px, 4vw, 30px);
  }

  .page-faq .faq-jump__inner {
    gap: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump__link,
  .page-faq .faq-item__btn,
  .page-faq .faq-item__icon,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-item__panel,
  .page-faq .faq-term,
  .page-faq .faq-term__link {
    transition: none;
  }
}