.page-faq {
  --faq-rail: 250px;
  --faq-gap: clamp(22px, 3vw, 46px);
  --page-faq-answer-in: 1;
  position: relative;
  padding-bottom: clamp(40px, 6vw, 72px);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: calc(var(--header-h) + clamp(20px, 4.5vw, 52px)) 0 clamp(28px, 4.5vw, 56px);
  background:
    radial-gradient(120% 140% at 88% -14%, rgba(44, 242, 208, .13) 0%, transparent 58%),
    linear-gradient(180deg, var(--ink-800) 0%, rgba(10, 26, 42, 0) 100%);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: -6%;
  bottom: -34px;
  width: 58%;
  height: 3px;
  background: linear-gradient(90deg, rgba(44, 242, 208, .5) 0%, rgba(255, 124, 46, .3) 60%, transparent 100%);
  transform: skewX(-18deg);
  pointer-events: none;
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(26px, 4vw, 46px);
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(2rem, 6.2vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--cream);
}

.page-faq .faq-hero .lead {
  margin-top: 20px;
  max-width: 48ch;
  color: var(--cream-72);
}

.page-faq .faq-meta {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
}

.page-faq .faq-meta li {
  display: flex;
  align-items: center;
  gap: 9px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  color: var(--rock);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-meta li::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--signal);
  box-shadow: 0 0 8px rgba(20, 199, 155, .7);
}

.page-faq .faq-hero-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-hero-figure .figure-media {
  aspect-ratio: 4 / 3;
  border-radius: var(--r-l);
  overflow: hidden;
  border: 1px solid var(--line-soft);
  background: var(--ink-800);
}

.page-faq .faq-hero-figure .figure-media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
}

.page-faq .faq-hero-figure .figure-caption {
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--rock);
  max-width: 46ch;
}

/* ---------- 筛选条 ---------- */

.page-faq .faq-filterbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 10px;
  margin-top: clamp(24px, 4vw, 42px);
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-filterbar-label {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .26em;
  color: var(--rock);
  margin-right: 4px;
}

.page-faq .faq-filterbar .filter-btn {
  border-radius: 999px;
  border: 1px solid var(--line-soft);
  background: rgba(18, 40, 60, .5);
  color: var(--cream-56);
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 500;
  padding: 7px 15px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-filterbar .filter-btn:hover {
  color: var(--cream);
  border-color: var(--cyan);
  transform: translateY(-1px);
}

.page-faq .faq-filterbar .filter-btn:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-filterbar .filter-btn[aria-pressed="true"],
.page-faq .faq-filterbar .filter-btn.is-active {
  background: var(--cyan-soft);
  border-color: var(--cyan);
  color: var(--cyan);
}

.page-faq .faq-filterbar .filter-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--rock);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

/* ---------- 分栏骨架 ---------- */

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  margin-top: clamp(28px, 5vw, 56px);
}

.page-faq .faq-index {
  min-width: 0;
  border-left: 2px solid var(--line-soft);
  padding-left: 16px;
}

.page-faq .faq-index-label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .3em;
  color: var(--rock);
}

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

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: 11px;
  padding: 9px 10px;
  border-radius: var(--r-s);
  text-decoration: none;
  color: var(--cream-56);
  font-size: 14px;
  line-height: 1.4;
  transition: color .2s var(--ease), background .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: var(--cyan-soft);
  color: var(--cream);
  transform: translateX(3px);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-index-art {
  display: none;
}

/* ---------- 分组 ---------- */

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

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

.page-faq .faq-group + .faq-group {
  position: relative;
  margin-top: clamp(36px, 5.5vw, 70px);
  padding-top: clamp(36px, 5.5vw, 70px);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: min(400px, 76%);
  height: 5px;
  border-radius: 3px;
  background: linear-gradient(90deg, var(--cyan) 0%, var(--signal) 36%, var(--orange) 66%, var(--moss) 100%);
  transform: skewX(-16deg);
  opacity: .6;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-start;
  gap: 12px 16px;
  margin-bottom: 16px;
}

.page-faq .faq-group-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(2.1rem, 5.4vw, 3.2rem);
  line-height: .88;
  letter-spacing: -.03em;
  color: transparent;
  -webkit-text-stroke: 1.2px var(--cyan);
  opacity: .62;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group-headtext {
  flex: 1 1 220px;
  min-width: 0;
}

.page-faq .faq-group-title {
  margin: 0;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-group-note {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--rock);
  max-width: 52ch;
}

.page-faq .faq-group-count {
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--rock);
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  padding: 4px 11px;
  white-space: nowrap;
}

/* ---------- 问答卡片 ---------- */

.page-faq .faq-items {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-faq .faq-item {
  position: relative;
  border: 1px solid var(--line-soft);
  border-radius: var(--r-m);
  background: linear-gradient(180deg, rgba(18, 40, 60, .76) 0%, rgba(10, 26, 42, .58) 100%);
  transition: transform .24s var(--ease), border-color .24s var(--ease), box-shadow .24s var(--ease);
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: -1px;
  top: 14%;
  bottom: 14%;
  width: 3px;
  border-radius: 3px;
  background: var(--ink-700);
  transition: top .26s var(--ease), bottom .26s var(--ease), background .26s var(--ease), box-shadow .26s var(--ease);
}

.page-faq .faq-item[open] {
  transform: translateY(2px);
  border-color: rgba(44, 242, 208, .34);
  box-shadow: -1px 0 22px rgba(44, 242, 208, .16);
}

.page-faq .faq-item[open]::before {
  top: 6%;
  bottom: 6%;
  background: var(--cyan);
  box-shadow: 0 0 14px rgba(44, 242, 208, .6);
}

.page-faq .faq-item[hidden] {
  display: none;
}

.page-faq .faq-q {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 17px clamp(15px, 2.6vw, 26px);
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--cream);
  transition: color .2s var(--ease);
}

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

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

.page-faq .faq-q:hover {
  color: var(--cyan);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -3px;
  border-radius: var(--r-m);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .faq-arrow {
  flex: 0 0 auto;
  width: 18px;
  height: 18px;
  margin-left: auto;
  margin-top: 4px;
  color: var(--rock);
  transition: transform .3s var(--ease), color .3s var(--ease);
}

.page-faq .faq-item[open] .faq-arrow {
  transform: rotate(45deg);
  color: var(--cyan);
}

.page-faq .faq-a {
  padding: 0 clamp(15px, 2.6vw, 26px) 19px;
}

.page-faq .faq-a p {
  margin: 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--cream-72);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(44, 242, 208, .42);
  transition: border-color .2s var(--ease);
}

.page-faq .faq-a a:hover {
  border-bottom-color: var(--cyan);
}

.page-faq .faq-item[open] .faq-a {
  animation: page-faq-answer-in .3s var(--ease) both;
}

@keyframes page-faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 底部求助 ---------- */

.page-faq .faq-cta {
  position: relative;
  margin-top: clamp(46px, 7vw, 92px);
  padding: clamp(34px, 6vw, 66px) 0;
  border-top: 1px solid var(--line-soft);
  border-bottom: 1px solid var(--line-soft);
  background:
    linear-gradient(112deg, rgba(18, 40, 60, .92) 0%, rgba(10, 26, 42, .68) 56%, rgba(60, 90, 73, .38) 100%);
  overflow: hidden;
}

.page-faq .faq-cta::after {
  content: "";
  position: absolute;
  right: -90px;
  top: -70px;
  width: 320px;
  height: 320px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(255, 124, 46, .22) 0%, transparent 68%);
  pointer-events: none;
}

.page-faq .faq-cta-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  align-items: center;
}

.page-faq .faq-cta-text {
  min-width: 0;
}

.page-faq .faq-cta h2 {
  margin: 10px 0 0;
  font-size: clamp(1.45rem, 3.6vw, 2.25rem);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--cream);
}

.page-faq .faq-cta-text p {
  margin: 14px 0 0;
  max-width: 52ch;
  font-size: 15px;
  line-height: 1.72;
  color: var(--cream-72);
}

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

.page-faq .faq-cta .faq-cta-contact {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 18px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--rock);
  word-break: break-word;
}

/* ---------- 窄屏调整 ---------- */

@media (max-width: 899px) {
  .page-faq .faq-index {
    border-left: 0;
    padding-left: 0;
  }

  .page-faq .faq-index-list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px;
  }

  .page-faq .faq-index-link {
    padding: 10px 12px;
    background: rgba(18, 40, 60, .42);
    border: 1px solid var(--line-soft);
    font-size: 13.5px;
  }
}

@media (max-width: 560px) {
  .page-faq .faq-filterbar-label {
    width: 100%;
    margin: 0 0 4px;
  }

  .page-faq .faq-filterbar .filter-count {
    margin-left: 0;
    width: 100%;
  }

  .page-faq .faq-group-count {
    margin-left: 0;
  }

  .page-faq .faq-q {
    font-size: 15px;
    gap: 12px;
  }
}

/* ---------- 宽屏 ---------- */

@media (min-width: 880px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.04fr) minmax(0, .96fr);
    align-items: end;
  }

  .page-faq .faq-cta-inner {
    grid-template-columns: minmax(0, 1.3fr) minmax(0, .7fr);
  }
}

@media (min-width: 900px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }

  .page-faq .faq-index-art {
    display: block;
    width: 100%;
    max-width: 206px;
    height: 206px;
    object-fit: cover;
    border-radius: var(--r-m);
    border: 1px solid var(--line-soft);
    margin-top: 26px;
    opacity: .26;
    filter: saturate(.55);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-arrow,
  .page-faq .faq-index-link,
  .page-faq .faq-filterbar .filter-btn {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }
}