/* ===== 答疑中心 · 页面专属样式（作用域 .page-faq） ===== */
.page-faq {
  --faq-index-w: 264px;
  --faq-cyan-08: rgba(34, 224, 255, .08);
  --faq-cyan-04: rgba(34, 224, 255, .045);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(26px, 5vw, 58px) 0 clamp(24px, 4vw, 44px);
  border-bottom: 1px solid var(--steel);
  background:
    radial-gradient(115% 135% at 96% -12%, rgba(34, 224, 255, .16), transparent 58%),
    linear-gradient(180deg, rgba(10, 33, 56, .9) 0%, rgba(4, 16, 31, 0) 100%);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan), transparent 62%);
  pointer-events: none;
}

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

.page-faq .faq-hero-tag {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero-grid {
  display: grid;
  gap: 24px;
  margin-top: 16px;
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.85rem, 5.6vw, 3.2rem);
  line-height: 1.08;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-hero-meta {
  padding: 16px 20px;
}

.page-faq .faq-meta-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 14px;
  padding: 9px 0;
  border-bottom: 1px dashed var(--steel);
}

.page-faq .faq-meta-row:last-child {
  border-bottom: 0;
  padding-bottom: 2px;
}

.page-faq .faq-meta-key {
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--muted);
}

.page-faq .faq-meta-val {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .8125rem;
  line-height: 1.5;
  color: var(--cyan);
  text-align: right;
}

@media (min-width: 900px) {
  .page-faq .faq-hero-grid {
    grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
    gap: 44px;
    align-items: end;
  }
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  padding-top: clamp(30px, 5vw, 56px);
}

.page-faq .faq-layout {
  display: grid;
  gap: 26px;
}

@media (min-width: 980px) {
  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index-title {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--muted);
}

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

.page-faq .faq-index-list::before {
  content: "";
  position: absolute;
  left: 17px;
  top: 12px;
  bottom: 12px;
  width: 1px;
  background: linear-gradient(180deg, var(--steel), rgba(28, 62, 99, .15));
  pointer-events: none;
}

.page-faq .faq-index-list a {
  position: relative;
  display: grid;
  grid-template-columns: 36px minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 5px 8px 5px 0;
  text-decoration: none;
  color: var(--muted);
  border-radius: 8px;
  transition: color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-index-list a:hover {
  color: var(--white);
  background-color: var(--faq-cyan-08);
}

.page-faq .faq-index-list a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-index-dot {
  position: relative;
  z-index: 1;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--steel);
  border-radius: 50%;
  background: var(--ink-800);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  transition: border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-index-list a:hover .faq-index-dot {
  border-color: var(--cyan);
  background-color: var(--faq-cyan-08);
}

.page-faq .faq-index-label {
  font-size: .875rem;
  line-height: 1.4;
}

.page-faq .faq-index-count {
  padding: 2px 8px;
  border: 1px solid var(--steel);
  border-radius: 999px;
  background: rgba(12, 40, 68, .5);
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 11px;
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

@media (min-width: 980px) {
  .page-faq .faq-index {
    position: sticky;
    top: 96px;
  }
}

@media (max-width: 979px) {
  .page-faq .faq-index-list {
    display: flex;
    flex-wrap: nowrap;
    gap: 10px;
    overflow-x: auto;
    padding: 2px 2px 10px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
  }

  .page-faq .faq-index-list::before {
    display: none;
  }

  .page-faq .faq-index-list li {
    flex: 0 0 auto;
    min-width: 196px;
    scroll-snap-align: start;
  }

  .page-faq .faq-index-list a {
    border: 1px solid var(--steel);
    border-radius: 10px;
    background: rgba(10, 33, 56, .6);
    padding: 10px 12px;
  }
}

/* ---------- 问题分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 6vw, 60px);
  padding-top: clamp(28px, 5vw, 46px);
  border-top: 1px solid var(--steel);
}

.page-faq .faq-group-head {
  padding-left: 16px;
  border-left: 2px solid var(--cyan);
  margin-bottom: 20px;
}

.page-faq .faq-group-tag {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  color: var(--cyan);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-group-head h2 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.18;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-group-note {
  margin: 0;
  max-width: 64ch;
  font-size: .9375rem;
  line-height: 1.66;
  color: var(--muted);
}

/* ---------- 步骤时间轴 ---------- */
.page-faq .faq-steps {
  position: relative;
  max-width: 640px;
  margin: 0 0 24px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 20px;
  bottom: 20px;
  width: 2px;
  border-radius: 2px;
  background: linear-gradient(180deg, var(--cyan) 0%, rgba(34, 224, 255, .28) 58%, rgba(34, 224, 255, 0) 100%);
}

.page-faq .faq-step {
  position: relative;
  min-height: 44px;
  padding: 12px 4px 18px 52px;
}

.page-faq .faq-step-node {
  position: absolute;
  left: 0;
  top: 12px;
  z-index: 1;
  width: 32px;
  height: 32px;
  display: grid;
  place-items: center;
  border: 1px solid var(--cyan);
  border-radius: 50%;
  background: var(--ink-900);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-step-title {
  margin: 4px 0 6px;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--white);
}

.page-faq .faq-step-text {
  margin: 0;
  font-size: .9375rem;
  line-height: 1.66;
  color: var(--muted);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  max-width: 760px;
  margin: 0 0 24px;
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--muted);
}

/* ---------- 问答手风琴 ---------- */
.page-faq .faq-acc {
  display: grid;
  border-top: 1px solid var(--steel);
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--steel);
  transition: background-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-item[open] {
  background-color: var(--faq-cyan-04);
  box-shadow: inset 3px 0 0 0 var(--cyan);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22px;
  align-items: start;
  gap: 14px;
  min-height: 44px;
  padding: 17px 8px 17px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 1rem;
  font-weight: 500;
  line-height: 1.55;
  color: var(--white);
  transition: color .18s 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: -2px;
}

.page-faq .faq-q::after {
  content: "";
  grid-column: 2;
  justify-self: end;
  width: 14px;
  height: 14px;
  margin-top: 5px;
  color: var(--cyan);
  background:
    linear-gradient(currentColor, currentColor) center / 14px 2px no-repeat,
    linear-gradient(currentColor, currentColor) center / 2px 14px no-repeat;
  transition: transform .22s var(--ease);
}

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

.page-faq .faq-item[open] .faq-q::after {
  background: linear-gradient(currentColor, currentColor) center / 14px 2px no-repeat;
  transform: rotate(180deg);
}

.page-faq .faq-a {
  max-width: 68ch;
  padding: 0 24px 22px 18px;
  font-size: .9375rem;
  line-height: 1.72;
  color: var(--muted);
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-a strong {
  color: var(--white);
  font-weight: 600;
}

.page-faq .faq-a .mono {
  color: var(--yellow);
  font-variant-numeric: tabular-nums;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-a a:hover {
  color: var(--white);
}

@media (prefers-reduced-motion: no-preference) {
  .page-faq .faq-item[open] > .faq-a {
    animation: faqAnswerIn .26s cubic-bezier(.2, .8, .2, 1) both;
  }

  .page-faq .faq-index-list a {
    will-change: background-color;
  }
}

@keyframes faqAnswerIn {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 底部去向 ---------- */
.page-faq .faq-next {
  padding-top: clamp(34px, 6vw, 62px);
}

.page-faq .faq-next-panel {
  padding: clamp(22px, 4vw, 38px);
}

.page-faq .faq-next-panel h2 {
  margin: 6px 0 18px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 3vw, 1.7rem);
  line-height: 1.2;
  color: var(--white);
}

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

.page-faq .faq-next-links a {
  position: relative;
  display: grid;
  gap: 4px;
  min-height: 44px;
  padding: 13px 34px 13px 4px;
  text-decoration: none;
  border-bottom: 1px solid var(--steel);
  transition: color .18s var(--ease), padding-left .18s var(--ease);
}

.page-faq .faq-next-links li:last-child a {
  border-bottom: 0;
}

.page-faq .faq-next-links strong {
  font-size: .9375rem;
  font-weight: 600;
  color: var(--white);
  transition: color .18s var(--ease);
}

.page-faq .faq-next-links span {
  font-size: .8125rem;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-next-links a::after {
  content: "→";
  position: absolute;
  right: 4px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--cyan);
  transition: transform .18s var(--ease);
}

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

.page-faq .faq-next-links a:hover::after {
  transform: translate(4px, -50%);
}

.page-faq .faq-next-links a:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

@media (min-width: 720px) {
  .page-faq .faq-next-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0 36px;
  }

  .page-faq .faq-next-links li:nth-last-child(2) a {
    border-bottom: 0;
  }
}
<<<END>>>