.page-faq {
  --faq-rule: rgba(90, 106, 110, .22);
  --faq-rule-soft: rgba(90, 106, 110, .13);
  --faq-ink-soft: rgba(250, 245, 236, .72);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(24px, 5vw, 52px);
  padding-bottom: clamp(32px, 5vw, 56px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--slate);
  margin: 0 0 clamp(20px, 4vw, 40px);
}

.page-faq .breadcrumb a {
  color: var(--slate);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-rule);
  transition: color .18s ease, border-color .18s ease;
}

.page-faq .breadcrumb a:hover {
  color: var(--red);
  border-color: var(--red);
}

.page-faq .breadcrumb-sep {
  color: var(--gold);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
}

.page-faq .faq-hero__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  font-size: clamp(2.4rem, 7.2vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: .02em;
  margin: 12px 0 18px;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  max-width: 42em;
  margin: 0;
  color: var(--slate);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 4 / 3;
  background: var(--moon);
}

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

/* ---------- 主题筛选 ---------- */
.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: clamp(28px, 4vw, 48px);
  padding-top: clamp(20px, 3vw, 30px);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .filter-btn {
  font-family: var(--font-body);
  font-size: 14px;
  line-height: 1;
  padding: 10px 18px;
  border-radius: 999px;
  border: 1px solid var(--faq-rule);
  background: transparent;
  color: var(--ink);
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-faq .filter-btn:hover {
  border-color: var(--gold);
  color: var(--red);
  transform: translateY(-1px);
}

.page-faq .filter-btn.is-active,
.page-faq .filter-btn[aria-pressed="true"] {
  background: var(--gold-light);
  border-color: var(--gold);
  color: var(--red-deep);
  font-weight: 500;
}

.page-faq .faq-count {
  margin-left: auto;
  font-size: 13px;
  color: var(--slate);
  letter-spacing: .06em;
}

.page-faq .faq-count .mono {
  color: var(--moss);
  font-size: 13px;
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-body {
  padding-top: clamp(36px, 5vw, 64px);
  padding-bottom: clamp(40px, 6vw, 80px);
}

.page-faq .faq-group {
  margin-top: clamp(36px, 6vw, 72px);
}

.page-faq .faq-group:first-child {
  margin-top: 0;
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: clamp(36px, 6vw, 72px);
  background: linear-gradient(90deg, transparent, var(--faq-rule) 22%, var(--faq-rule) 78%, transparent);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 6px;
  padding: 0;
  background: none;
  border: 0;
  margin: 0 0 clamp(14px, 2.2vw, 22px);
}

.page-faq .plate-head {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: baseline;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
}

.page-faq .plate-num {
  color: var(--gold);
}

.page-faq .plate-path {
  color: var(--stone);
}

.page-faq .plate-title {
  margin: 0;
  color: var(--ink);
}

.page-faq .plate-note {
  margin: 0;
  font-size: 15px;
  color: var(--slate);
}

/* ---------- 折叠问答条目 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-rule-soft);
  scroll-margin-top: 80px;
}

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

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 34px 1fr 18px;
  gap: 12px;
  align-items: start;
  padding: clamp(16px, 2.4vw, 22px) 0;
  cursor: pointer;
  list-style: none;
  transition: color .18s ease;
}

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

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--gold);
  padding-top: 5px;
}

.page-faq .faq-q__text {
  font-size: clamp(16px, 2.1vw, 19px);
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  transition: color .18s ease;
}

.page-faq .faq-q__sign {
  position: relative;
  width: 16px;
  height: 16px;
  margin-top: 7px;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 1.5px;
  background: var(--stone);
  transition: transform .22s ease, background .22s ease;
}

.page-faq .faq-q__sign::after {
  transform: rotate(90deg);
}

.page-faq .faq-item[open] .faq-q__sign::after {
  transform: rotate(0deg);
}

.page-faq .faq-item[open] .faq-q__sign::before,
.page-faq .faq-item[open] .faq-q__sign::after {
  background: var(--red);
}

.page-faq .faq-item[open] .faq-q__text {
  color: var(--red-deep);
}

.page-faq .faq-q:hover .faq-q__text {
  color: var(--red);
}

.page-faq .faq-a {
  border-left: 2px solid var(--gold-light);
  padding: 2px 0 clamp(20px, 3vw, 28px) clamp(14px, 2vw, 20px);
  margin: 0 0 clamp(4px, 1vw, 10px) 34px;
  max-width: 68ch;
}

.page-faq .faq-a__path {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--moss);
}

.page-faq .faq-a p {
  margin: 0 0 12px;
  font-size: 17px;
  line-height: 1.78;
  color: var(--ink);
}

.page-faq .faq-a__link {
  display: inline-block;
  margin-top: 4px;
  font-size: 13px;
  padding: 9px 18px;
}

/* ---------- 联系入口 ---------- */
.page-faq .faq-contact {
  color: var(--rice);
  padding-top: clamp(44px, 6vw, 84px);
  padding-bottom: clamp(44px, 6vw, 84px);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: clamp(28px, 4vw, 56px);
}

.page-faq .faq-contact__head {
  margin: 0 0 14px;
}

.page-faq .faq-contact__head .plate-num {
  color: var(--gold-light);
}

.page-faq .faq-contact__head .plate-path {
  color: var(--faq-ink-soft);
}

.page-faq .faq-contact__title {
  color: var(--rice);
  margin: 0 0 14px;
}

.page-faq .faq-contact__lede {
  max-width: 40em;
  margin: 0 0 clamp(24px, 3vw, 34px);
  color: var(--faq-ink-soft);
  line-height: 1.8;
}

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0 0 clamp(26px, 3vw, 36px);
  padding: 0;
  display: grid;
  gap: 18px;
}

.page-faq .faq-contact__item {
  border-left: 2px solid rgba(199, 154, 63, .55);
  padding-left: 16px;
}

.page-faq .faq-contact__key {
  margin: 0 0 4px;
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--gold-light);
}

.page-faq .faq-contact__val {
  margin: 0 0 4px;
  font-size: 17px;
  color: var(--rice);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 14px;
  color: rgba(250, 245, 236, .58);
}

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

.page-faq .faq-contact__ghost {
  color: var(--rice);
  border-color: rgba(250, 245, 236, .34);
}

.page-faq .faq-contact__ghost:hover {
  border-color: var(--gold-light);
  color: var(--gold-light);
}

.page-faq .faq-contact__figure {
  margin: 0;
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 3 / 2;
  background: rgba(250, 245, 236, .08);
}

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

/* ---------- 桌面 ---------- */
@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 1.18fr .82fr;
    align-items: center;
  }

  .page-faq .faq-hero__figure {
    aspect-ratio: 14 / 10;
  }

  .page-faq .faq-q {
    grid-template-columns: 52px 1fr 18px;
    gap: 16px;
  }

  .page-faq .faq-a {
    margin-left: 52px;
    padding-left: clamp(20px, 2.6vw, 34px);
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: 1.12fr .88fr;
    align-items: center;
  }

  .page-faq .faq-contact__figure {
    aspect-ratio: 3 / 2;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-a {
    max-width: 66ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .filter-btn,
  .page-faq .faq-q__sign::before,
  .page-faq .faq-q__sign::after,
  .page-faq .faq-q__text {
    transition: none;
  }
}