/* ============================================
   口径问答 / page-faq
   ============================================ */
.page-faq {
  --faq-line: rgba(195, 203, 209, 0.14);
  --faq-line-soft: rgba(195, 203, 209, 0.07);
  --faq-panel: var(--indigo-800);
  --faq-space: clamp(18px, 3.2vw, 36px);
  background:
    radial-gradient(118% 68% at 100% 0%, rgba(29, 39, 80, 0.62) 0%, rgba(11, 16, 38, 0) 62%),
    var(--indigo-900);
  color: var(--paper);
  padding-bottom: clamp(44px, 6vw, 104px);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: clamp(14px, 2.4vw, 24px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}
.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--line-lime);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--paper);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-masthead {
  position: relative;
  padding: clamp(28px, 5vw, 60px) 0 clamp(24px, 3.6vw, 44px);
  border-bottom: 1px solid var(--line-dark);
  overflow: hidden;
}
.page-faq .faq-masthead::before {
  content: "";
  position: absolute;
  top: clamp(28px, 5vw, 60px);
  right: 0;
  width: clamp(54px, 9vw, 132px);
  height: 3px;
  background: linear-gradient(90deg, rgba(255, 91, 46, 0) 0%, var(--lava) 100%);
  pointer-events: none;
}
.page-faq .faq-masthead::after {
  content: "";
  position: absolute;
  right: clamp(20px, 4.2vw, 64px);
  bottom: 0;
  width: 1px;
  height: clamp(40px, 8vw, 96px);
  background: linear-gradient(180deg, rgba(198, 242, 78, 0) 0%, rgba(198, 242, 78, 0.55) 100%);
  pointer-events: none;
}
.page-faq .faq-title {
  margin: 0.28em 0 0;
  color: var(--paper);
}
.page-faq .faq-lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: clamp(16px, 1.5vw, 17px);
  line-height: 1.8;
  color: #D6DCE2;
}

.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: clamp(24px, 3.6vw, 42px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--faq-line);
  border-left: 1px solid var(--faq-line);
}
.page-faq .faq-facts__item {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-right: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  background: rgba(20, 27, 58, 0.42);
}
.page-faq .faq-facts__v {
  font-size: clamp(26px, 4vw, 40px);
  line-height: 1;
  letter-spacing: -0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--lime);
}
.page-faq .faq-facts__l {
  font-family: var(--font-head);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted);
}

@media (min-width: 720px) {
  .page-faq .faq-facts {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(30px, 4.4vw, 64px);
  padding-top: clamp(30px, 4.6vw, 60px);
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(196px, 232px) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }
}

/* ---------- 主题索引 ---------- */
.page-faq .faq-index {
  padding: clamp(16px, 1.8vw, 22px);
  background: var(--faq-panel);
  border: 1px solid var(--faq-line);
  border-left: 3px solid var(--lime-deep);
}
.page-faq .faq-index__label {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--amber);
}
.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
  counter-reset: none;
}
.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px 9px 10px;
  text-decoration: none;
  color: #C9D2DA;
  border-left: 2px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-index__num {
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.page-faq .faq-index__name {
  font-family: var(--font-head);
  font-size: 14px;
  letter-spacing: 0.03em;
  line-height: 1.35;
}
.page-faq .faq-index__count {
  font-size: 11px;
  color: var(--muted);
  padding: 1px 5px;
  border: 1px solid var(--faq-line);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--paper);
  background: rgba(198, 242, 78, 0.07);
  border-left-color: var(--lime);
}
.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 1px;
}
.page-faq .faq-index__note {
  margin: 18px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line-soft);
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 112px;
}
.page-faq .faq-group + .faq-group {
  margin-top: clamp(38px, 5vw, 74px);
}
.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding-bottom: 12px;
  margin-bottom: clamp(14px, 1.8vw, 22px);
  border-bottom: 1px solid var(--line-dark);
}
.page-faq .faq-group__num {
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--lava);
  flex: none;
}
.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 26px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--paper);
}

/* ---------- 单条问答 ---------- */
.page-faq .faq-item {
  position: relative;
  background: rgba(20, 27, 58, 0.5);
  border: 1px solid var(--faq-line);
  border-left: 2px solid var(--lake-300);
  transition: border-left-color 120ms var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-item + .faq-item {
  margin-top: 6px;
}
.page-faq .faq-item:hover {
  background: rgba(20, 27, 58, 0.78);
}
.page-faq .faq-item:has([aria-expanded="true"]) {
  border-left-color: var(--lime);
  background: rgba(20, 27, 58, 0.86);
}
.page-faq .faq-item__heading {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.page-faq .faq-q {
  width: 100%;
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 8px 14px;
  padding: clamp(14px, 1.7vw, 20px) clamp(14px, 1.7vw, 22px);
  background: none;
  border: 0;
  text-align: left;
  color: var(--paper);
  cursor: pointer;
  font: inherit;
}
.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}
.page-faq .faq-q__text {
  flex: 1 1 22ch;
  font-family: var(--font-head);
  font-size: clamp(15px, 1.55vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: 0.01em;
}
.page-faq .faq-q__meta {
  flex: none;
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--amber);
  padding: 3px 8px;
  border: 1px solid rgba(255, 196, 102, 0.34);
  white-space: nowrap;
  font-variant-numeric: tabular-nums;
}
.page-faq .disclosure__icon {
  flex: none;
  color: var(--lime);
}
.page-faq .faq-item:has([aria-expanded="true"]) .faq-q__meta {
  color: var(--lime);
  border-color: var(--line-lime);
}

.page-faq .faq-answer {
  margin: 0;
  max-width: 68ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: #DCE2E8;
}
.page-faq .disclosure__inner {
  padding: 0 clamp(14px, 1.7vw, 22px) clamp(18px, 2.2vw, 26px) clamp(14px, 1.7vw, 22px);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: clamp(18px, 2.4vw, 30px) 0;
}
.page-faq .faq-figure--tight {
  margin-top: clamp(20px, 2.6vw, 32px);
}
.page-faq .faq-figure .media-frame {
  border: 1px solid var(--faq-line);
  background: var(--ink);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.88) contrast(1.08) brightness(0.92);
}
.page-faq .faq-figure .media-frame__caption {
  margin-top: 10px;
  font-family: var(--font-body);
  font-size: 12px;
  line-height: 1.7;
  color: var(--muted);
  border-left: 2px solid var(--lava);
  padding-left: 10px;
}

/* ---------- 适用范围 ---------- */
.page-faq .faq-scope {
  margin-top: clamp(44px, 6vw, 84px);
  padding: clamp(22px, 3vw, 38px) clamp(18px, 2.6vw, 34px);
  background: var(--lake-100);
  color: var(--indigo-900);
  border-top: 3px solid var(--lava);
}
.page-faq .faq-scope__label {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: #6B7783;
}
.page-faq .faq-scope__title {
  margin: 10px 0 0;
  font-family: var(--font-head);
  font-size: clamp(19px, 2.2vw, 26px);
  font-weight: 600;
  line-height: 1.25;
  color: var(--indigo-900);
}
.page-faq .faq-scope__text {
  margin: 14px 0 0;
  max-width: 66ch;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  color: #16203F;
}
.page-faq .faq-scope__links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 10px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-scope__link {
  display: inline-block;
  padding: 8px 16px;
  border: 1px solid #9BA6AF;
  border-radius: var(--radius-pill);
  font-family: var(--font-head);
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--indigo-900);
  text-decoration: none;
  transition: background-color var(--dur) var(--ease), border-color var(--dur) var(--ease), color var(--dur) var(--ease);
}
.page-faq .faq-scope__link:hover,
.page-faq .faq-scope__link:focus-visible {
  background: var(--indigo-900);
  border-color: var(--indigo-900);
  color: var(--lime);
}
.page-faq .faq-scope__link:focus-visible {
  outline: 2px solid var(--lime-deep);
  outline-offset: 2px;
}

/* ---------- 窄屏收敛 ---------- */
@media (max-width: 560px) {
  .page-faq .faq-q__meta {
    order: 3;
    flex-basis: 100%;
    width: fit-content;
  }
  .page-faq .faq-index__link {
    padding-left: 8px;
    gap: 8px;
  }
  .page-faq .faq-scope__links {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-index__link,
  .page-faq .faq-scope__link,
  .page-faq .breadcrumb a {
    transition: none !important;
  }
}
</main>