/* ===== 答疑中心 · 页面专属样式（限定在 .page-faq 作用域内） ===== */

.page-faq {
  --faq-col: 232px;
  --faq-pad: clamp(18px, 3.2vw, 34px);
  --faq-tint: rgba(201, 162, 75, 0.045);
}

/* ---------- 页头 ---------- */

.page-faq .faq-hero {
  padding-block: clamp(18px, 3vw, 36px) clamp(24px, 4vw, 46px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 22ch;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(29px, 6.2vw, 68px);
  line-height: 1.08;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.75;
  color: var(--body);
}

.page-faq .faq-hero__grid {
  margin-top: clamp(24px, 4vw, 46px);
  display: grid;
  gap: clamp(20px, 3vw, 32px);
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 7 / 3;
  object-fit: cover;
}

/* ---------- 当季适用信息（本页唯一金色数据焦点） ---------- */

.page-faq .faq-quarter {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  padding: var(--faq-pad);
  background: var(--graphite);
  border: 2px solid var(--gold);
  box-shadow: var(--shadow-card), inset 0 0 0 1px var(--foil-line);
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-quarter .data-card__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-faq .faq-quarter .data-card__value {
  margin: 0;
  font-family: var(--font-mono);
  font-size: clamp(46px, 8vw, 76px);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--gold-light);
}

.page-faq .faq-quarter .data-card__unit {
  margin-left: 6px;
  font-size: 0.3em;
  letter-spacing: 0.06em;
  color: var(--gold);
}

.page-faq .faq-quarter .data-card__note {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body);
}

/* ---------- 主体骨架 ---------- */

.page-faq .faq-body {
  padding-block: clamp(28px, 4.6vw, 56px) clamp(36px, 6vw, 78px);
}

.page-faq .faq-shell {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
}

/* ---------- 左侧分组索引 ---------- */

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--body-dim);
}

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

.page-faq .faq-index__link {
  display: block;
  padding: 9px 13px;
  border: 1px solid var(--line);
  background: var(--graphite);
  color: var(--body);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background-color 0.3s var(--ease), color 0.3s var(--ease), border-color 0.3s var(--ease);
}

.page-faq .faq-index__link:hover {
  background: var(--seal);
  border-color: var(--seal);
  color: var(--paper);
}

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

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  scroll-margin-top: calc(var(--header-h) + 30px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(40px, 6vw, 80px);
  padding-top: clamp(26px, 4vw, 50px);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-group__num {
  font-size: 13px;
  letter-spacing: 0.14em;
  color: var(--gold);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 38px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__figure {
  margin: 0 0 clamp(16px, 2.4vw, 26px);
  max-width: 520px;
}

.page-faq .faq-group__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 4 / 3;
  object-fit: cover;
}

/* ---------- 问答手风琴 ---------- */

.page-faq .faq-group__list {
  border-top: 1px solid var(--line);
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 17px 4px 17px 16px;
  border-left: 2px solid transparent;
  cursor: pointer;
  list-style: none;
  transition: border-color 0.35s var(--ease), background-color 0.35s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  border-left-color: var(--line-strong);
  background: var(--faq-tint);
}

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

.page-faq .faq-item[open] > .faq-item__q {
  border-left-color: var(--gold);
}

.page-faq .faq-item__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(16px, 2.1vw, 22px);
  line-height: 1.42;
  color: var(--paper);
  transition: color 0.35s var(--ease);
}

.page-faq .faq-item[open] > .faq-item__q .faq-item__title,
.page-faq .faq-item__q:hover .faq-item__title {
  color: var(--gold-light);
}

.page-faq .faq-item__icon {
  flex: none;
  margin-top: 2px;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1.1;
  color: var(--gold);
}

.page-faq .faq-item__icon::before {
  content: "+";
}

.page-faq .faq-item[open] .faq-item__icon::before {
  content: "−";
}

.page-faq .faq-item__a {
  padding: 0 4px 22px 18px;
  max-width: 66ch;
  border-left: 2px solid transparent;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--body);
}

/* ---------- 收束与联系入口 ---------- */

.page-faq .faq-cta {
  padding-block: clamp(30px, 5vw, 64px);
}

.page-faq .faq-cta__inner {
  margin-top: clamp(22px, 3vw, 38px);
  display: grid;
  gap: 14px;
  max-width: 64ch;
}

.page-faq .faq-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(23px, 3.6vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-cta__lede {
  margin: 0;
  font-size: 16px;
  line-height: 1.8;
  color: var(--body);
}

.page-faq .faq-cta__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--body-dim);
}

.page-faq .faq-cta__note a {
  color: var(--gold-light);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
}

.page-faq .faq-cta__note a:hover {
  color: var(--foil);
  border-bottom-color: var(--gold);
}

.page-faq .faq-cta__note a:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* ---------- 平板与桌面 ---------- */

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

  .page-faq .faq-item__q {
    padding: 20px 4px 20px 18px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: stretch;
  }

  .page-faq .faq-shell {
    grid-template-columns: var(--faq-col) minmax(0, 1fr);
    align-items: start;
    gap: clamp(36px, 5vw, 72px);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 28px);
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 0;
  }

  .page-faq .faq-index__link {
    border: 0;
    border-bottom: 1px solid var(--line);
    border-left: 2px solid transparent;
    background: transparent;
    padding: 13px 14px;
    font-size: 15px;
  }

  .page-faq .faq-index__link:hover {
    background: var(--seal);
    border-bottom-color: var(--seal);
    border-left-color: var(--seal);
    color: var(--paper);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item__q,
  .page-faq .faq-item__title {
    transition: none;
  }
}