.page-faq {
  --faq-no-col: 2.6em;
  --faq-row-pad: clamp(15px, 1.8vw, 20px);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: clamp(24px, 4vw, 44px) clamp(30px, 4.5vw, 56px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(115% 88% at 92% -10%, rgba(32, 227, 210, 0.10) 0%, rgba(32, 227, 210, 0) 56%),
    radial-gradient(80% 70% at 0% 100%, rgba(110, 91, 166, 0.14) 0%, rgba(110, 91, 166, 0) 62%),
    var(--ink);
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  margin-top: clamp(20px, 3.2vw, 36px);
}

.page-faq .faq-hero__label {
  margin: 0 0 12px;
}

.page-faq .faq-hero__title {
  margin: 0;
  font-family: var(--font-narrow);
  font-weight: 800;
  font-size: clamp(32px, 5.6vw, 66px);
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--text);
  max-width: 19ch;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.06);
}

.page-faq .media__cap {
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

/* ---------- 分组跳转条 ---------- */
.page-faq .faq-jump {
  margin-top: clamp(26px, 4vw, 44px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-jump__list {
  display: flex;
  align-items: stretch;
  list-style: none;
  margin: 0;
  padding: 0;
  min-width: max-content;
}

.page-faq .faq-jump__list li + li {
  border-left: 1px solid var(--line);
}

.page-faq .faq-jump__list a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 20px;
  font-size: 14px;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  border-bottom: 2px solid transparent;
  transition: color 0.18s var(--ease), border-color 0.18s var(--ease), background 0.18s var(--ease);
}

.page-faq .faq-jump__list a:hover,
.page-faq .faq-jump__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
  background: rgba(32, 227, 210, 0.07);
  outline: none;
}

.page-faq .faq-jump__no {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq .faq-jump__list a:hover .faq-jump__no {
  color: var(--cyan);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  padding-block: clamp(34px, 5.2vw, 64px);
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  border-top: 3px double var(--line);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(20px, 2.6vw, 30px);
}

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

.page-faq .faq-group__head .h-lg {
  margin: 0;
  color: var(--text);
}

.page-faq .faq-group__lead {
  margin: 0;
  max-width: 44ch;
}

/* ---------- 问题条目 ---------- */
.page-faq .faq-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
  transition: background 0.18s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 3px;
  background: var(--cyan);
  transform: scaleY(0);
  transform-origin: 50% 0;
  transition: transform 0.18s var(--ease);
}

.page-faq .faq-item:hover::before {
  transform: scaleY(0.42);
}

.page-faq .faq-item[open]::before {
  transform: scaleY(1);
}

.page-faq .faq-item[open] {
  background: #0E1B33;
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: var(--faq-no-col) minmax(0, 1fr) 14px;
  align-items: baseline;
  gap: 12px;
  padding: var(--faq-row-pad) 18px var(--faq-row-pad) 20px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-narrow);
  font-weight: 700;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.5;
  color: var(--text);
  transition: color 0.18s var(--ease);
}

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

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item__q:focus-visible {
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-item__q:focus-visible {
  box-shadow: inset 0 0 0 2px rgba(32, 227, 210, 0.55);
}

.page-faq .faq-item__no {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
}

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

.page-faq .faq-item__text {
  display: block;
  min-width: 0;
}

.page-faq .faq-item__icon {
  position: relative;
  justify-self: end;
  align-self: center;
  width: 12px;
  height: 12px;
  flex: none;
}

.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  background: var(--cyan);
  transition: transform 0.18s var(--ease);
}

.page-faq .faq-item__icon::before {
  left: 0;
  right: 0;
  top: 5.25px;
  height: 1.5px;
}

.page-faq .faq-item__icon::after {
  top: 0;
  bottom: 0;
  left: 5.25px;
  width: 1.5px;
}

.page-faq .faq-item[open] .faq-item__icon::after {
  transform: scaleY(0);
}

.page-faq .faq-item__a {
  padding: 0 18px clamp(18px, 2vw, 24px) 20px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .faq-item__a p + p,
.page-faq .faq-item__a p + .faq-steps,
.page-faq .faq-item__a .faq-steps + p {
  margin-top: 12px;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(32, 227, 210, 0.42);
  transition: border-color 0.18s var(--ease);
}

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  border-bottom-color: var(--cyan);
  outline: none;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 12px 0 0;
  padding: 0;
  counter-reset: faqstep;
  display: grid;
  gap: 2px;
  border-top: 1px solid var(--line);
}

.page-faq .faq-steps li {
  counter-increment: faqstep;
  display: grid;
  grid-template-columns: 2.2em minmax(0, 1fr);
  gap: 8px;
  padding: 8px 0;
  border-bottom: 1px solid rgba(27, 42, 74, 0.65);
  color: var(--muted);
}

.page-faq .faq-steps li::before {
  content: counter(faqstep, decimal-leading-zero);
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.9;
  color: var(--cyan);
}

/* ---------- 组内插图 ---------- */
.page-faq .faq-inline-media {
  margin: clamp(24px, 3.4vw, 40px) 0 0;
  border: 1px solid var(--line);
  background: var(--teal);
  overflow: hidden;
}

.page-faq .faq-inline-media img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.9) contrast(1.05);
}

.page-faq .faq-inline-media .media__cap {
  border-top: 1px solid var(--line);
  background: rgba(5, 11, 24, 0.55);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-outro {
  border-top: 3px double var(--line);
  padding-block: clamp(36px, 5.5vw, 68px);
  background: linear-gradient(180deg, rgba(14, 58, 70, 0.5) 0%, rgba(5, 11, 24, 0) 78%);
}

.page-faq .faq-outro__inner {
  display: grid;
  gap: 24px;
}

.page-faq .faq-outro__copy .label {
  margin: 0 0 12px;
}

.page-faq .faq-outro__copy .h-xl {
  margin: 0;
  color: var(--text);
  max-width: 24ch;
}

.page-faq .faq-outro__copy .lead {
  margin: 16px 0 0;
  max-width: 48ch;
}

.page-faq .faq-outro__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-item__a {
    padding-left: calc(20px + var(--faq-no-col) + 12px);
  }

  .page-faq .faq-inline-media {
    max-width: 72%;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: end;
  }

  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 42ch);
    grid-template-areas:
      "label lead"
      "title lead";
    align-items: end;
    column-gap: clamp(28px, 4vw, 56px);
    row-gap: 8px;
  }

  .page-faq .faq-group__label {
    grid-area: label;
  }

  .page-faq .faq-group__head .h-lg {
    grid-area: title;
  }

  .page-faq .faq-group__lead {
    grid-area: lead;
  }

  .page-faq .faq-item__a > * {
    max-width: 46ch;
  }

  .page-faq .faq-outro__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
    column-gap: clamp(28px, 4vw, 64px);
  }

  .page-faq .faq-outro__actions {
    justify-content: flex-end;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group__head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 46ch);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item::before,
  .page-faq .faq-item__icon::before,
  .page-faq .faq-item__icon::after,
  .page-faq .faq-item__q,
  .page-faq .faq-jump__list a,
  .page-faq .faq-item__a a {
    transition: none;
  }
}