.page-faq {
  background: var(--ink);
  color: var(--paper);
  --faq-rail: 252px;
  --faq-cut: 18px;
}

.page-faq .faq-crumb {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: 4px;
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(28px, 4vw, 52px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 44px);
  align-items: center;
}

.page-faq .faq-hero__copy {
  max-width: 640px;
  min-width: 0;
}

.page-faq .faq-hero__copy .eyebrow {
  color: var(--gold);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 4.8vw, 54px);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lede {
  margin: 18px 0 26px;
  max-width: 52ch;
  font-size: 17px;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .faq-hero__figure {
  margin: 0;
  min-width: 0;
  border: 1px solid var(--rule-soft);
  background-image: linear-gradient(140deg, #171512 0%, #0d0d0e 55%, #141210 100%);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}

.page-faq .faq-quick__caption {
  margin: clamp(26px, 4vw, 40px) 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--gold);
}

.page-faq .faq-quick {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  background: var(--rule);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-quick__item {
  min-width: 0;
}

.page-faq .faq-quick__link {
  display: flex;
  gap: 14px;
  align-items: baseline;
  padding: 16px 14px;
  background: var(--char);
  color: var(--paper);
  text-decoration: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease);
}

.page-faq .faq-quick__link:hover,
.page-faq .faq-quick__link:focus-visible {
  background: var(--green);
  color: var(--cream);
}

.page-faq .faq-quick__no {
  flex: 0 0 auto;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-quick__text {
  font-size: 15px;
  line-height: 1.5;
}

/* 问答主体 */
.page-faq .faq-body {
  background: var(--char);
  border-top: 1px solid var(--rule);
  padding: clamp(34px, 5vw, 68px) 0 clamp(40px, 6vw, 80px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 3vw, 44px);
  align-items: start;
}

.page-faq .faq-rail {
  background: var(--green);
  border: 1px solid var(--rule-soft);
  padding: 16px 14px 14px;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--gold);
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 6px;
  overflow-x: auto;
  scrollbar-width: none;
}

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

.page-faq .faq-rail__link {
  display: inline-flex;
  gap: 8px;
  align-items: baseline;
  padding: 8px 10px;
  white-space: nowrap;
  font-size: 14px;
  color: var(--cream);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--gold-bright);
  border-color: var(--gold);
}

.page-faq .faq-rail__no {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--gold);
}

.page-faq .faq-rail__meta {
  margin: 14px 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--mute);
}

.page-faq .faq-filter {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 18px;
  padding-bottom: 16px;
  margin-bottom: clamp(20px, 3vw, 32px);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-filter .filter-status {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--mute);
}

/* 分组与手风琴 */
.page-faq .faq-group {
  scroll-margin-top: 104px;
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(26px, 4vw, 46px);
}

.page-faq .faq-group:not(:has(.faq-item:not([hidden]))) {
  display: none;
}

.page-faq .faq-group__title {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--rule-soft);
  font-family: var(--font-display);
  font-size: clamp(19px, 2.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .faq-group__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-group__lede {
  margin: 14px 0 4px;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--mute);
}

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

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px 0;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  transition: color var(--dur) var(--ease);
}

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

.page-faq .faq-item__q::before {
  content: "+";
  flex: 0 0 20px;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.65;
  color: var(--gold);
}

.page-faq .faq-item[open] > .faq-item__q::before {
  content: "–";
  color: var(--gold-bright);
}

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--gold-bright);
}

.page-faq .faq-item__a {
  margin: 0 0 16px;
  padding: 16px 16px 18px;
  background: var(--cream);
  color: var(--ink);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 66ch;
  font-size: 15px;
  line-height: 1.78;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--green);
  font-weight: 500;
}

.page-faq .faq-steps {
  list-style: none;
  counter-reset: fs;
  margin: 12px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps > li {
  counter-increment: fs;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  font-size: 14.5px;
  line-height: 1.72;
}

.page-faq .faq-steps > li::before {
  content: counter(fs, decimal-leading-zero);
  align-self: start;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border: 1px solid var(--green);
  color: var(--green);
  font-family: var(--font-mono);
  font-size: 11px;
}

.page-faq .faq-shot {
  margin: 16px 0 0;
  border: 1px solid rgba(11, 11, 12, 0.16);
  background: rgba(11, 11, 12, 0.04);
}

.page-faq .faq-shot img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-shot figcaption {
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.65;
  color: #4a443a;
}

.page-faq .faq-more {
  margin-top: 12px;
}

/* 桌面 */
@media (min-width: 720px) {
  .page-faq .faq-quick {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
  }

  .page-faq .faq-quick {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-quick__link {
    flex-direction: column;
    gap: 8px;
    padding: 18px 16px 20px;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
    padding: 20px 18px 18px;
  }

  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-rail__link {
    display: flex;
    white-space: normal;
  }

  .page-faq .faq-item__q {
    padding: 17px 0;
  }

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

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