.page-faq {
  --faq-gap-line: rgba(46, 61, 82, .85);
  --faq-soft: rgba(233, 238, 245, .82);
  --faq-focus: var(--lime);
  padding-bottom: clamp(56px, 8vw, 104px);
}

/* ── 首屏 ───────────────────────────────────────── */
.page-faq .faq-hero {
  display: grid;
  gap: 26px;
  padding: clamp(20px, 4vw, 40px) 0 clamp(26px, 4vw, 46px);
  border-bottom: 1px solid var(--faq-gap-line);
  position: relative;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 88px;
  height: 2px;
  background: var(--lime);
}

.page-faq .faq-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(30px, 6.4vw, 58px);
  line-height: 1.06;
  letter-spacing: -.012em;
  margin: 12px 0 0;
  color: var(--mist);
  text-wrap: balance;
}

.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--slate);
}

.page-faq .faq-hero__board {
  align-self: end;
  padding: 20px 20px 18px;
  border: 1px solid var(--faq-gap-line);
  border-radius: var(--radius-organic);
  background:
    radial-gradient(120% 100% at 100% 0%, rgba(182, 255, 60, .09), transparent 58%),
    var(--charcoal);
}

.page-faq .faq-hero__board-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .16em;
  color: var(--lime);
}

.page-faq .faq-slots {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px 14px;
}

.page-faq .faq-slots__item {
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-left: 10px;
  border-left: 1px solid var(--blueprint);
}

.page-faq .faq-slots__t {
  font-family: var(--font-mono);
  font-size: 19px;
  letter-spacing: .04em;
  color: var(--mist);
}

.page-faq .faq-slots__d {
  font-size: 12px;
  color: var(--slate);
}

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

/* ── 双栏骨架 ───────────────────────────────────── */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 32px;
  padding-top: clamp(28px, 4vw, 48px);
}

.page-faq .faq-index {
  border-bottom: 1px solid var(--faq-gap-line);
  padding-bottom: 16px;
}

.page-faq .faq-index__cap {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--slate-dim);
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.page-faq .faq-index__link {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 10px;
  border-left: 2px solid transparent;
  border-radius: 3px;
  text-decoration: none;
  color: var(--slate);
  transition: color 160ms var(--ease), border-color 160ms var(--ease), background-color 160ms var(--ease);
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lime);
}

.page-faq .faq-index__label {
  font-size: 14px;
  line-height: 1.4;
  white-space: nowrap;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--mist);
  border-left-color: var(--lime);
  background-color: rgba(182, 255, 60, .07);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--faq-focus);
  outline-offset: 2px;
}

/* ── 问答分组 ───────────────────────────────────── */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(40px, 6vw, 72px);
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 104px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: grid;
  gap: 6px;
  margin-bottom: 14px;
}

.page-faq .faq-group__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .18em;
  color: var(--lime);
}

.page-faq .faq-group__title {
  position: relative;
  margin: 0;
  padding-left: 20px;
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 29px);
  line-height: 1.2;
  letter-spacing: -.005em;
  color: var(--mist);
  text-wrap: balance;
}

.page-faq .faq-group__title::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 11px;
  height: 2px;
  background: var(--lime);
}

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

/* ── 折叠问答 ───────────────────────────────────── */
.page-faq .faq-item {
  border-top: 1px solid var(--faq-gap-line);
  transition: background-color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--faq-gap-line);
}

.page-faq .faq-item[open] {
  background-image: linear-gradient(180deg, rgba(182, 255, 60, .055), rgba(182, 255, 60, 0) 78%);
}

.page-faq .faq-item > summary {
  position: relative;
  cursor: pointer;
  list-style: none;
  padding: 17px 40px 17px 0;
  font-family: var(--font-display);
  font-size: 17px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--mist);
  transition: color 160ms var(--ease);
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  right: 6px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--lime);
  transition: transform 160ms var(--ease), color 160ms var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  content: "–";
  transform: translateY(-50%) scale(1.06);
}

.page-faq .faq-item > summary:hover {
  color: var(--lime);
}

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--faq-focus);
  outline-offset: 2px;
}

.page-faq .faq-item__a {
  padding: 0 40px 20px 0;
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--faq-soft);
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
  color: var(--slate);
}

/* ── 配图 ──────────────────────────────────────── */
.page-faq .faq-fig {
  margin: 20px 0 4px;
  min-width: 0;
}

.page-faq .faq-fig .media-frame {
  margin: 0;
}

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

/* ── 联系收束 ───────────────────────────────────── */
.page-faq .faq-contact {
  display: grid;
  gap: 22px;
  padding: clamp(22px, 3.4vw, 36px);
  border: 1px solid var(--blueprint);
  border-radius: var(--radius-organic);
  background:
    linear-gradient(135deg, rgba(182, 255, 60, .075), rgba(182, 255, 60, 0) 46%),
    linear-gradient(215deg, rgba(255, 92, 43, .09), rgba(255, 92, 43, 0) 52%),
    var(--charcoal);
  scroll-margin-top: 104px;
}

.page-faq .faq-contact__lead p {
  margin: 14px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--slate);
}

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

.page-faq .faq-contact__list .contact-line {
  display: grid;
  gap: 4px;
  padding: 12px 0;
  border-top: 1px dashed var(--faq-gap-line);
}

.page-faq .faq-contact__list .contact-line:last-child {
  border-bottom: 1px dashed var(--faq-gap-line);
}

.page-faq .faq-contact__list .contact-line__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--slate-dim);
}

.page-faq .faq-contact__list .contact-line__value {
  font-size: 15px;
  line-height: 1.66;
  color: var(--mist);
  text-decoration: none;
  word-break: break-word;
}

.page-faq .faq-contact__list a.contact-line__value {
  border-bottom: 1px solid rgba(182, 255, 60, .35);
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

.page-faq .faq-contact__list a.contact-line__value:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

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

/* ── 响应式 ─────────────────────────────────────── */
@media (min-width: 760px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.4fr) minmax(260px, .85fr);
    gap: 40px;
    align-items: end;
  }

  .page-faq .faq-slots {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: start;
    column-gap: 36px;
  }

  .page-faq .faq-contact__acts {
    grid-column: 1 / -1;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: 226px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 96px;
    border-bottom: 0;
    padding-bottom: 0;
    border-left: 1px solid var(--faq-gap-line);
    padding-left: 14px;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    flex-wrap: nowrap;
    gap: 2px;
  }

  .page-faq .faq-index__link {
    width: 100%;
  }

  .page-faq .faq-index__label {
    white-space: normal;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-contact {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr) auto;
    align-items: center;
    column-gap: 40px;
  }

  .page-faq .faq-contact__acts {
    grid-column: auto;
    flex-direction: column;
    align-items: stretch;
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-group__body--split {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 300px);
    gap: 40px;
    align-items: start;
  }

  .page-faq .faq-group__body--split .faq-fig {
    margin-top: 22px;
  }
}

@media (max-width: 620px) {
  .page-faq .faq-item > summary {
    padding-right: 34px;
    font-size: 16px;
  }

  .page-faq .faq-item__a {
    padding-right: 12px;
  }

  .page-faq .faq-slots__t {
    font-size: 17px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-index__link,
  .page-faq .faq-contact__list a.contact-line__value {
    transition: none;
  }
}