.page-faq {
  background: var(--night);
  color: var(--ink);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .faq-crumb {
  padding-top: 22px;
}

.page-faq .faq-crumb .breadcrumb__link {
  color: var(--muted);
}

.page-faq .faq-crumb .breadcrumb__item span[aria-current] {
  color: var(--ink);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 26px 0 clamp(48px, 7vw, 88px);
  background:
    radial-gradient(1100px 520px at 88% -12%, rgba(30, 122, 87, 0.34), transparent 62%),
    linear-gradient(180deg, var(--night-deep), var(--night) 78%);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-hero__eyebrow .mono {
  color: var(--gold);
  margin-right: 8px;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.14;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-hero__jumps {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 26px;
}

.page-faq .faq-jump {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  color: var(--ink);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.2s ease, background 0.2s ease, transform 0.2s ease;
}

.page-faq .faq-jump .mono {
  color: var(--grass);
  font-size: 12px;
}

.page-faq .faq-jump:hover,
.page-faq .faq-jump:focus-visible {
  border-color: var(--mint);
  background: var(--glass-strong);
  transform: translateY(-2px);
}

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

.page-faq .faq-hero__figure img,
.page-faq .faq-cat__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  border-radius: var(--radius);
}

.page-faq .faq-hero__figure .media-frame__caption,
.page-faq .faq-cat__figure .media-frame__caption {
  margin-top: 10px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.6;
}

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  padding: clamp(40px, 6vw, 76px) 0;
  background: linear-gradient(180deg, var(--night) 0%, var(--pitch) 120%);
}

.page-faq .faq-body__grid {
  display: grid;
  gap: 34px;
}

/* 分类索引 */
.page-faq .faq-index {
  padding: 20px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
  backdrop-filter: blur(6px);
}

.page-faq .faq-index__title {
  margin: 0 0 14px;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: baseline;
  gap: 12px;
  padding: 10px 10px 10px 14px;
  border-left: 2px solid var(--line);
  color: var(--ink);
  text-decoration: none;
  font-size: 15px;
  transition: border-color 0.2s ease, background 0.2s ease, color 0.2s ease;
}

.page-faq .faq-index__no {
  font-size: 12px;
  color: var(--muted-deep);
}

.page-faq .faq-index__count {
  font-size: 12px;
  color: var(--muted-deep);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--mint);
  background: var(--glass-strong);
}

.page-faq .faq-index__link[aria-current="true"] {
  border-left-color: var(--grass);
  background: var(--glass-strong);
  font-weight: 700;
}

.page-faq .faq-index__hint {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 1px dashed var(--line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-index__hint .mono {
  color: var(--gold);
}

/* 分类区块 */
.page-faq .faq-list {
  display: grid;
  gap: clamp(38px, 5vw, 64px);
  min-width: 0;
}

.page-faq .faq-cat {
  scroll-margin-top: 96px;
  border-left: 3px solid transparent;
  padding-left: 0;
  transition: border-color 0.25s ease;
  min-width: 0;
}

.page-faq .faq-cat:target {
  border-left-color: var(--mint);
  padding-left: 16px;
}

.page-faq .faq-cat__head {
  margin-bottom: 20px;
}

.page-faq .faq-cat__no {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
}

.page-faq .faq-cat__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 30px);
  line-height: 1.3;
  color: var(--ink);
}

.page-faq .faq-cat__lede {
  margin: 0;
  max-width: 46ch;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

.page-faq .faq-cat__figure {
  margin: 0 0 22px;
}

/* 问答条目 */
.page-faq .faq-items {
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line);
  min-width: 0;
}

.page-faq .faq-item > summary {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 4px;
  cursor: pointer;
  list-style: none;
  transition: background 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary::marker {
  content: "";
}

.page-faq .faq-item__no {
  flex: none;
  font-size: 12px;
  color: var(--muted-deep);
}

.page-faq .faq-item__q {
  font-size: 15px;
  font-weight: 500;
  line-height: 1.7;
  color: var(--ink);
}

.page-faq .faq-item > summary::after {
  content: "+";
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  color: var(--muted);
  line-height: 1;
}

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

.page-faq .faq-item[open] > summary .faq-item__no {
  color: var(--mint);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  background: var(--glass);
  padding-left: 10px;
}

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

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14px;
  line-height: 1.85;
  max-width: 40em;
}

.page-faq .faq-item__a a {
  color: var(--grass);
}

/* 类间术语窄条 */
.page-faq .faq-term-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 16px;
  margin: 24px 0 0;
  padding: 13px 16px;
  border-left: 3px solid var(--gold);
  border-radius: var(--radius);
  background: linear-gradient(90deg, rgba(227, 179, 65, 0.14), rgba(227, 179, 65, 0));
  font-size: 13px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-term-strip__key {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

/* ---------- 术语速查（浅色区） ---------- */
.page-faq .faq-glossary {
  padding: clamp(44px, 6vw, 80px) 0;
  background: var(--paper);
  color: var(--ink-on-paper);
}

.page-faq .faq-glossary__head {
  margin-bottom: 26px;
  border-top: 3px solid var(--grass);
  padding-top: 18px;
}

.page-faq .faq-glossary__no {
  margin: 0 0 8px;
  font-size: 12px;
  letter-spacing: 0.12em;
  color: var(--grass);
}

.page-faq .faq-glossary__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 3.4vw, 32px);
  line-height: 1.28;
  color: var(--ink-on-paper);
}

.page-faq .faq-glossary__lede {
  margin: 0;
  max-width: 44ch;
  font-size: 14px;
  line-height: 1.8;
  color: #3A4E5A;
}

.page-faq .glossary {
  margin: 0;
  border-top: 1px solid rgba(13, 29, 40, 0.16);
}

.page-faq .glossary__row {
  display: grid;
  gap: 6px;
  padding: 14px 8px;
  border-bottom: 1px solid rgba(13, 29, 40, 0.16);
  scroll-margin-top: 96px;
  transition: background 0.25s ease;
}

.page-faq .glossary__row:target {
  background: rgba(30, 122, 87, 0.14);
  border-bottom-color: var(--grass);
}

.page-faq .glossary__term {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--ink-on-paper);
}

.page-faq .glossary__link {
  color: inherit;
  text-decoration: none;
  border-bottom: 2px solid var(--gold);
}

.page-faq .glossary__link:hover,
.page-faq .glossary__link:focus-visible {
  color: var(--grass);
}

.page-faq .glossary__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: #2B3D48;
}

/* ---------- 联络 ---------- */
.page-faq .faq-contact {
  padding: clamp(44px, 6vw, 76px) 0;
  background: var(--night-deep);
}

.page-faq .faq-contact__grid {
  display: grid;
  gap: 26px;
}

.page-faq .faq-contact__ledger {
  padding: 24px 22px;
}

.page-faq .faq-contact__no {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--grass);
}

.page-faq .faq-contact__title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.2vw, 28px);
  line-height: 1.32;
  color: var(--ink-on-paper);
}

.page-faq .faq-contact__text {
  margin: 0 0 12px;
  font-size: 14px;
  line-height: 1.85;
  color: #2B3D48;
  max-width: 42em;
}

.page-faq .faq-contact__note {
  margin: 0 0 18px;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-size: 13px;
  line-height: 1.75;
  color: #3A4E5A;
}

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

.page-faq .faq-contact__list {
  list-style: none;
  margin: 0;
  padding: 20px 18px;
  display: grid;
  gap: 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--glass);
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 4px;
}

.page-faq .faq-contact__key {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--muted-deep);
}

.page-faq .faq-contact__val {
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink);
  word-break: break-word;
}

.page-faq .faq-contact__val a {
  color: var(--mint);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .glossary {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 40px;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: minmax(0, 1.4fr) minmax(0, 1fr);
    align-items: start;
  }
}

@media (min-width: 940px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: center;
    gap: 48px;
  }

  .page-faq .faq-hero__figure {
    align-self: stretch;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 246px minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }
}

@media (max-width: 420px) {
  .page-faq .faq-item > summary {
    gap: 10px;
    padding: 14px 2px;
  }

  .page-faq .faq-item__q {
    font-size: 14px;
  }

  .page-faq .faq-item__a {
    padding: 14px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-jump,
  .page-faq .faq-index__link,
  .page-faq .faq-item > summary,
  .page-faq .faq-cat,
  .page-faq .glossary__row {
    transition: none;
  }

  .page-faq .faq-jump:hover,
  .page-faq .faq-jump:focus-visible {
    transform: none;
  }
}