.page-faq {
  --faq-sticky: calc(var(--header-h) + 22px);
  background-color: var(--turf-900);
  color: var(--mist);
  overflow-x: clip;
}

/* ---------- 通用容器 ---------- */
.page-faq .faq-wrap {
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.page-faq .faq-eyebrow {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--aqua);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(104px, 16vw, 158px) 0 clamp(36px, 6vw, 68px);
  background:
    radial-gradient(115% 85% at 92% 4%, rgba(33, 230, 193, 0.16), transparent 64%),
    radial-gradient(95% 75% at 4% 96%, rgba(201, 242, 77, 0.12), transparent 62%),
    linear-gradient(172deg, var(--turf-900) 0%, var(--turf-700) 70%, var(--slate-900) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(90deg, rgba(238, 244, 236, 0.045) 0 2px, transparent 2px 98px);
  -webkit-mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
  mask-image: linear-gradient(180deg, rgba(0, 0, 0, 0.85), transparent 78%);
}

.page-faq .faq-crumbs {
  position: relative;
  z-index: 1;
  margin-bottom: clamp(22px, 4vw, 46px);
}

.page-faq .faq-crumbs__list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
}

.page-faq .faq-crumbs__item {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--steel);
}

.page-faq .faq-crumbs__item + .faq-crumbs__item::before {
  content: "/";
  color: rgba(143, 160, 172, 0.6);
}

.page-faq .faq-crumbs__link {
  color: var(--steel);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-crumbs__link:hover {
  color: var(--lime);
  border-bottom-color: var(--lime);
}

.page-faq .faq-crumbs__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-faq .faq-crumbs__current {
  color: var(--mist);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 1;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
}

.page-faq .faq-hero__title {
  margin: 14px 0 20px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(33px, 7.4vw, 74px);
  line-height: 1.03;
  letter-spacing: -0.028em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 56ch;
  font-size: clamp(15.5px, 1.5vw, 17.5px);
  line-height: 1.82;
  color: rgba(238, 244, 236, 0.78);
}

.page-faq .faq-hero__meta {
  margin: 22px 0 0;
  padding-left: 14px;
  border-left: 3px solid var(--lime);
  font-size: 13.5px;
  line-height: 1.72;
  color: var(--steel);
}

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

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
  box-shadow: 0 34px 76px -42px rgba(33, 230, 193, 0.6), 0 0 0 1px rgba(33, 230, 193, 0.22);
}

/* ---------- 主布局：索引 + 问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: clamp(30px, 5vw, 60px);
  width: 100%;
  max-width: var(--shell);
  margin-inline: auto;
  padding: clamp(38px, 6vw, 76px) var(--pad) clamp(60px, 9vw, 110px);
}

.page-faq .faq-index {
  border-top: 2px solid var(--lime);
  padding-top: 18px;
}

.page-faq .faq-index__list {
  display: grid;
  gap: 4px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 10px;
  padding: 11px 12px;
  border-left: 3px solid transparent;
  border-radius: 0 12px 12px 0;
  color: rgba(238, 244, 236, 0.82);
  text-decoration: none;
  font-size: 14.5px;
  line-height: 1.42;
  transition: background-color 180ms var(--ease), border-color 180ms var(--ease), color 180ms var(--ease), transform 180ms var(--ease);
}

.page-faq .faq-index__link:hover {
  background-color: rgba(201, 242, 77, 0.08);
  border-left-color: var(--aqua);
  color: var(--mist);
  transform: translateX(3px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-faq .faq-index__idx {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--lime);
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--steel);
}

.page-faq .faq-index__foot {
  margin: 20px 0 0;
  font-size: 13px;
  line-height: 1.76;
  color: var(--steel);
}

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

/* ---------- 分组 ---------- */
.page-faq .faq-section {
  scroll-margin-top: calc(var(--header-h) + 28px);
}

.page-faq .faq-section + .faq-section {
  margin-top: clamp(46px, 6vw, 78px);
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 10px 16px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section__no {
  font-family: var(--font-mono);
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--lime);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(21px, 2.6vw, 30px);
  line-height: 1.24;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-section__tag {
  margin-left: auto;
  padding: 4px 11px;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--steel);
}

/* ---------- 问答面板 ---------- */
.page-faq .qa {
  border-bottom: 1px solid var(--line-soft);
  border-left: 3px solid transparent;
  transition: background-color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .qa[open] {
  border-left-color: var(--lime);
  background-image: linear-gradient(90deg, rgba(201, 242, 77, 0.06), transparent 74%);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 10px 18px 16px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15.5px, 1.7vw, 18px);
  line-height: 1.56;
  color: var(--mist);
  transition: color 180ms var(--ease);
}

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

.page-faq .qa__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 20px;
  line-height: 1;
  color: var(--lime);
}

.page-faq .qa[open] > .qa__q::after {
  content: "−";
}

.page-faq .qa__q:hover {
  color: var(--lime);
}

.page-faq .qa__q:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
  border-radius: 8px;
}

.page-faq .qa__a {
  max-width: 74ch;
  padding: 0 22px 22px 16px;
  color: rgba(238, 244, 236, 0.76);
}

.page-faq .qa__a p {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.84;
}

/* ---------- 横向数据条 ---------- */
.page-faq .data-strip {
  display: grid;
  gap: 1px;
  margin-top: clamp(40px, 6vw, 72px);
  border-radius: var(--radius);
  overflow: hidden;
  background-color: var(--line);
}

.page-faq .data-strip__cell {
  display: grid;
  gap: 7px;
  padding: 20px 22px;
  background-color: var(--slate-700);
  transition: background-color 200ms var(--ease);
}

.page-faq .data-strip__cell:hover {
  background-color: var(--slate-900);
}

.page-faq .data-strip__value {
  font-family: var(--font-mono);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  color: var(--lime);
}

.page-faq .data-strip__value--aqua {
  color: var(--aqua);
}

.page-faq .data-strip__value--orange {
  color: var(--orange);
}

.page-faq .data-strip__unit {
  margin-left: 5px;
  font-size: 11.5px;
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-faq .data-strip__label {
  font-size: 13px;
  line-height: 1.6;
  color: rgba(238, 244, 236, 0.7);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 6px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius);
  object-fit: cover;
  border: 1px solid rgba(33, 230, 193, 0.22);
}

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

/* ---------- 联系信息面板 ---------- */
.page-faq .faq-contact {
  display: grid;
  gap: 14px;
  margin-top: 24px;
  padding: clamp(20px, 3vw, 30px);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    linear-gradient(140deg, rgba(27, 42, 56, 0.96), rgba(15, 26, 36, 0.96)),
    var(--slate-700);
}

.page-faq .faq-contact__row {
  display: grid;
  gap: 5px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line-soft);
}

.page-faq .faq-contact__row:last-of-type {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--aqua);
}

.page-faq .faq-contact__val {
  font-family: var(--font-mono);
  font-size: clamp(14px, 1.6vw, 16.5px);
  line-height: 1.5;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-contact__note {
  margin: 0;
  font-size: 13px;
  line-height: 1.72;
  color: var(--steel);
}

/* ---------- 平板及以上 ---------- */
@media (min-width: 640px) {
  .page-faq .data-strip {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-contact__row {
    grid-template-columns: 132px minmax(0, 1fr);
    align-items: baseline;
    gap: 18px;
  }
}

@media (min-width: 920px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }
}

@media (min-width: 1024px) {
  .page-faq .faq-layout {
    grid-template-columns: 272px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    max-height: calc(100vh - var(--faq-sticky) - 28px);
    overflow-y: auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}