.page-faq {
  --faq-sticky: 72px;
  --faq-accent-line: rgba(51, 225, 214, 0.5);
  background: var(--ink);
  color: var(--text);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(92px, 12vw, 140px) 0 clamp(36px, 6vw, 60px);
  background:
    radial-gradient(120% 130% at 90% -10%, rgba(124, 92, 255, 0.26), transparent 62%),
    radial-gradient(90% 120% at 4% 0%, rgba(51, 225, 214, 0.18), transparent 58%),
    var(--ink);
}

.page-faq .faq-hero__beam {
  position: absolute;
  top: 16%;
  right: -14%;
  width: 54vw;
  height: 30vw;
  max-width: 760px;
  pointer-events: none;
  background: linear-gradient(120deg, rgba(51, 225, 214, 0.3), rgba(124, 92, 255, 0.24) 48%, rgba(255, 174, 87, 0));
  clip-path: polygon(0 6%, 100% 0, 88% 100%, 0 84%);
  transform: rotate(-8deg);
  filter: blur(1px);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image: repeating-linear-gradient(0deg, rgba(242, 246, 255, 0.045) 0 1px, transparent 1px 4px);
  opacity: 0.5;
}

.page-faq .faq-hero .wrap {
  position: relative;
  z-index: 1;
}

.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 18px;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s ease-out;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
}

.page-faq .breadcrumb [aria-current="page"] {
  color: var(--cyan);
}

.page-faq .faq-hero .eyebrow {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.12em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(30px, 5vw + 12px, 52px);
  line-height: 1.16;
  letter-spacing: -0.02em;
  text-shadow: var(--glow-cyan);
}

.page-faq .faq-hero .lede {
  margin: 18px 0 0;
  max-width: 60ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

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

.page-faq .faq-stats li {
  padding: 8px 16px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  background: rgba(12, 18, 32, 0.72);
  font-size: 13.5px;
  color: var(--muted);
}

.page-faq .faq-stats b {
  margin-right: 6px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 16px;
  color: var(--cyan);
}

/* ---------- 双栏骨架 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 0;
  padding-bottom: clamp(56px, 9vw, 96px);
  align-items: start;
}

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

/* ---------- 分类索引：移动端横向胶囊条 ---------- */
.page-faq .faq-index {
  position: sticky;
  top: var(--faq-sticky);
  z-index: 4;
  margin: 0;
  padding: 8px 0 10px;
  background: linear-gradient(180deg, rgba(6, 8, 15, 0.97), rgba(6, 8, 15, 0.86));
  border-bottom: 1px solid var(--line-soft);
  backdrop-filter: blur(10px);
}

.page-faq .faq-index__title {
  display: none;
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--muted);
}

.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-index__list::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-index__list a {
  display: block;
  padding: 7px 15px;
  white-space: nowrap;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: rgba(12, 18, 32, 0.8);
  font-size: 14px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.16s ease-out, border-color 0.16s ease-out, box-shadow 0.16s ease-out;
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  color: var(--cyan);
  border-color: var(--faq-accent-line);
  box-shadow: var(--glow-cyan);
}

/* ---------- 分类与问答 ---------- */
.page-faq .faq-section {
  padding: 28px 0 34px;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--faq-sticky) + 64px);
}

.page-faq .faq-section:first-child {
  padding-top: 20px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 6px;
}

.page-faq .faq-section__no {
  flex: none;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-weight: 800;
  font-size: clamp(32px, 6vw, 46px);
  line-height: 1;
  letter-spacing: -0.04em;
  color: rgba(51, 225, 214, 0.16);
  -webkit-text-stroke: 1px rgba(51, 225, 214, 0.55);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw + 8px, 27px);
  letter-spacing: -0.01em;
  color: var(--text);
}

.page-faq .faq-section:target .faq-section__title {
  color: var(--cyan);
  text-shadow: var(--glow-cyan);
}

.page-faq .faq-section__intro {
  max-width: 60ch;
  margin: 0 0 18px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 0 0 20px;
  padding: 1px;
  background: linear-gradient(135deg, rgba(51, 225, 214, 0.42), rgba(124, 92, 255, 0.34) 55%, rgba(34, 48, 77, 0.5));
  clip-path: var(--cut-lg);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  clip-path: var(--cut-lg);
  background: var(--panel);
}

/* 手风琴 */
.page-faq .faq-item {
  position: relative;
  margin-bottom: 10px;
  border: 1px solid var(--line-soft);
  border-radius: 14px;
  background: rgba(12, 18, 32, 0.72);
  overflow: hidden;
  transition: border-color 0.16s ease-out, box-shadow 0.16s ease-out, background-color 0.16s ease-out;
}

.page-faq .faq-item::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--cyan), var(--violet));
  transform: scaleY(0);
  transform-origin: top center;
  transition: transform 0.28s var(--ease);
  pointer-events: none;
}

.page-faq .faq-item[open] {
  border-color: rgba(51, 225, 214, 0.5);
  background: rgba(14, 21, 38, 0.9);
  box-shadow: 0 0 0 1px rgba(51, 225, 214, 0.14), 0 10px 26px rgba(4, 7, 14, 0.6);
}

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

.page-faq .faq-item > summary {
  position: relative;
  display: flex;
  gap: 12px;
  align-items: flex-start;
  padding: 15px 44px 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--text);
}

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

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

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

.page-faq .faq-item > summary::after {
  content: "";
  position: absolute;
  right: 19px;
  top: 22px;
  width: 9px;
  height: 9px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg);
  transition: transform 0.2s var(--ease);
}

.page-faq .faq-item[open] > summary::after {
  transform: rotate(-135deg);
}

.page-faq .faq-q-no {
  flex: none;
  min-width: 26px;
  padding-top: 1px;
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-faq .faq-answer {
  padding: 0 18px 18px clamp(18px, 6vw, 54px);
  color: var(--muted);
  font-size: 15px;
  line-height: 1.75;
}

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

.page-faq .faq-item[open] .faq-answer {
  animation: faq-drop 0.28s var(--ease) both;
}

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

/* ---------- 联系引导 ---------- */
.page-faq .faq-help__card {
  display: grid;
  gap: 22px;
  margin-top: 18px;
  padding: clamp(20px, 4vw, 30px);
  background:
    radial-gradient(120% 140% at 100% 0%, rgba(124, 92, 255, 0.24), transparent 60%),
    radial-gradient(100% 120% at 0% 100%, rgba(51, 225, 214, 0.16), transparent 62%),
    var(--panel);
  clip-path: var(--cut-lg);
  border: 1px solid var(--line-soft);
}

.page-faq .faq-help__kicker {
  margin: 0 0 8px;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--amber);
}

.page-faq .faq-help__text {
  margin: 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 18px;
}

.page-faq .faq-help__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 2px;
}

.page-faq .faq-help__list li {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 12px;
  padding: 11px 0;
  border-bottom: 1px dashed var(--line-soft);
  font-size: 14.5px;
  color: var(--text);
  word-break: break-word;
}

.page-faq .faq-help__list li:last-child {
  border-bottom: 0;
}

.page-faq .faq-help__label {
  flex: none;
  min-width: 74px;
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-help__list .num {
  font-family: var(--font-num);
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
}

/* ---------- 平板 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-answer {
    padding-left: 54px;
  }

  .page-faq .faq-help__card {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
    gap: 28px;
    align-items: start;
  }

  .page-faq .faq-help__list li {
    flex-direction: column;
    gap: 2px;
    padding: 9px 0;
  }

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

/* ---------- 桌面：左索引右答案 ---------- */
@media (min-width: 900px) {
  .page-faq {
    --faq-sticky: 96px;
  }

  .page-faq .faq-shell {
    grid-template-columns: 224px minmax(0, 1fr);
    gap: 56px;
  }

  .page-faq .faq-index {
    top: var(--faq-sticky);
    padding: 0;
    background: none;
    border-bottom: 0;
    backdrop-filter: none;
  }

  .page-faq .faq-index__title {
    display: block;
  }

  .page-faq .faq-index__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
  }

  .page-faq .faq-index__list a {
    padding: 9px 14px;
    white-space: normal;
    border-color: transparent;
    border-radius: 12px;
    background: transparent;
    font-size: 14.5px;
  }

  .page-faq .faq-index__list a:hover,
  .page-faq .faq-index__list a:focus-visible {
    border-color: var(--faq-accent-line);
    background: rgba(51, 225, 214, 0.08);
  }

  .page-faq .faq-section {
    padding: 34px 0 40px;
    scroll-margin-top: calc(var(--faq-sticky) + 24px);
  }

  .page-faq .faq-section:first-child {
    padding-top: 0;
  }

  .page-faq .faq-item > summary {
    padding: 17px 48px 17px 20px;
    font-size: 16px;
  }

  .page-faq .faq-answer {
    padding: 0 48px 20px 58px;
  }

  .page-faq .faq-item:hover {
    border-color: rgba(34, 48, 77, 1);
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-hero__beam {
    filter: none;
    transform: none;
    opacity: 0.5;
  }

  .page-faq .faq-item,
  .page-faq .faq-item::before,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-index__list a {
    transition-duration: 0.12s;
  }

  .page-faq .faq-item[open] .faq-answer {
    animation: none;
  }
}
<<<END>>>