.page-faq {
  --faq-group-gap: clamp(56px, 9vw, 104px);
  --faq-line: rgba(201, 162, 39, 0.28);
  --faq-line-soft: rgba(246, 241, 230, 0.12);
  background: var(--obsidian);
  color: var(--text);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(88px, 14vw, 152px) 0 clamp(40px, 6vw, 76px);
  background:
    radial-gradient(115% 85% at 86% 4%, rgba(201, 162, 39, 0.17), transparent 58%),
    radial-gradient(80% 70% at 6% 100%, rgba(160, 90, 60, 0.12), transparent 62%),
    linear-gradient(180deg, #0A0A0B 0%, #131316 56%, #0A0A0B 100%);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-hero__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 56px);
  align-items: start;
}

.page-faq .breadcrumb {
  margin-bottom: 26px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--text-faint);
}

.page-faq .breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.25s var(--ease), border-color 0.25s var(--ease);
}

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

.page-faq .breadcrumb__sep {
  margin: 0 8px;
  color: rgba(201, 162, 39, 0.5);
}

.page-faq .faq-hero .index-label {
  display: block;
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(2.4rem, 9vw, 4.6rem);
  line-height: 1.06;
  letter-spacing: 0.02em;
  color: var(--ivory);
  max-width: 14em;
}

.page-faq .faq-hero__lead {
  margin: clamp(20px, 3vw, 30px) 0 0;
  max-width: 46ch;
  font-family: var(--font-body);
  font-size: clamp(1rem, 2.6vw, 1.125rem);
  line-height: 1.78;
  color: var(--text-muted);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: clamp(24px, 4vw, 34px);
}

.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 15px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-pill);
  background: rgba(28, 29, 32, 0.55);
  font-size: 13px;
  letter-spacing: 0.02em;
  color: var(--champagne);
  text-decoration: none;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}

.page-faq .faq-jump__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--line-gold-strong);
  background: rgba(201, 162, 39, 0.1);
  color: var(--ivory);
}

.page-faq .faq-hero__media {
  margin: 0;
  position: relative;
  aspect-ratio: 12 / 7;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--graphite);
  box-shadow: var(--shadow-card);
}

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

/* 分组 */
.page-faq .faq-group {
  padding-top: var(--faq-group-gap);
  scroll-margin-top: 104px;
}

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding-bottom: clamp(16px, 2.4vw, 24px);
  border-bottom: 1px solid var(--faq-line);
}

.page-faq .faq-group__num {
  font-family: var(--font-mono);
  font-weight: 300;
  font-size: clamp(2.6rem, 13vw, 4rem);
  line-height: 0.82;
  letter-spacing: 0.02em;
  color: rgba(201, 162, 39, 0.4);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 300;
  font-size: clamp(1.5rem, 5.4vw, 2.15rem);
  line-height: 1.24;
  letter-spacing: 0.02em;
  color: var(--ivory);
}

.page-faq .faq-group__lead {
  margin: 10px 0 0;
  max-width: 48ch;
  font-size: clamp(0.9375rem, 2.4vw, 1rem);
  line-height: 1.75;
  color: var(--text-faint);
}

.page-faq .faq-list {
  margin-top: 6px;
}

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 20px 2px 20px 0;
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 2.6vw, 1.0625rem);
  font-weight: 500;
  line-height: 1.65;
  color: var(--ivory);
  cursor: pointer;
  list-style: none;
  transition: color 0.25s var(--ease);
}

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

.page-faq .faq-item__q::marker {
  content: "";
}

.page-faq .faq-item__q::before {
  content: "";
  flex: 0 0 22px;
  width: 22px;
  height: 22px;
  margin-top: 3px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  background-color: transparent;
  background-image:
    linear-gradient(var(--gold), var(--gold)),
    linear-gradient(var(--gold), var(--gold));
  background-size: 10px 1px, 1px 10px;
  background-position: 50% 50%;
  background-repeat: no-repeat;
  transition: border-color 0.3s var(--ease), background-color 0.3s var(--ease), background-size 0.3s var(--ease);
}

.page-faq .faq-item__q:hover {
  color: var(--champagne);
}

.page-faq .faq-item__q:hover::before {
  border-color: var(--line-gold-strong);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--champagne);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-item[open] .faq-item__q::before {
  border-color: var(--gold);
  background-color: rgba(201, 162, 39, 0.14);
  background-size: 10px 1px, 1px 0;
}

.page-faq .faq-item__a {
  position: relative;
  padding: 0 2px 24px 36px;
}

.page-faq .faq-item__a::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 4px;
  bottom: 26px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--gold), rgba(201, 162, 39, 0));
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 62ch;
  font-family: var(--font-body);
  font-size: clamp(0.9375rem, 2.5vw, 1rem);
  line-height: 1.8;
  color: var(--text-muted);
}

.page-faq .faq-item[open] .faq-item__a {
  animation: faq-answer-in 0.4s var(--ease) both;
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* 路径示意带 */
.page-faq .faq-band {
  padding-top: var(--faq-group-gap);
}

.page-faq .faq-band__media {
  position: relative;
  margin: 0;
  aspect-ratio: 5 / 3;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--graphite);
  box-shadow: var(--shadow-card);
}

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

.page-faq .faq-band__media .media-frame__caption {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  margin: 0;
  padding: 14px 18px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--champagne);
  background: linear-gradient(180deg, rgba(10, 10, 11, 0) 0%, rgba(10, 10, 11, 0.88) 78%);
}

/* 回到索引 */
.page-faq .faq-back {
  margin-top: clamp(40px, 6vw, 72px);
  padding-top: clamp(24px, 4vw, 36px);
  border-top: 1px solid var(--faq-line-soft);
  display: flex;
  justify-content: flex-start;
}

.page-faq .faq-back .btn {
  border-radius: var(--radius-pill);
}

/* 桌面栅格 */
@media (min-width: 720px) {
  .page-faq .faq-group__head {
    grid-template-columns: 132px minmax(0, 1fr);
    gap: 6px 30px;
    align-items: start;
  }

  .page-faq .faq-group__num {
    font-size: clamp(3.2rem, 5vw, 4.4rem);
  }

  .page-faq .faq-item__q {
    padding: 24px 2px 24px 0;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 0.94fr);
    gap: clamp(36px, 5vw, 76px);
    align-items: center;
  }

  .page-faq .faq-hero__media {
    aspect-ratio: 12 / 7;
  }

  .page-faq .faq-band__media {
    aspect-ratio: 5 / 3;
    margin-left: auto;
    width: min(100%, 960px);
  }
}

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

  .page-faq .faq-item[open] .faq-item__a {
    animation: none;
  }
}