.page-faq {
  display: block;
  color: var(--ink);
  background-color: var(--galaxy);
  background-image:
    linear-gradient(rgba(36, 48, 102, .22) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36, 48, 102, .22) 1px, transparent 1px),
    radial-gradient(820px 480px at 92% -8%, rgba(108, 75, 216, .22), transparent 64%),
    radial-gradient(680px 400px at -10% 14%, rgba(34, 211, 197, .10), transparent 62%);
  background-size: 96px 96px, 96px 96px, auto, auto;
  padding-bottom: 8px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--dim);
}
.page-faq .breadcrumb a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color .2s var(--ease), border-color .2s var(--ease);
}
.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--pulse);
  border-bottom-color: var(--pulse);
}
.page-faq .breadcrumb .crumb-sep { color: var(--grid-blue); }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 36px;
  border-bottom: 2px solid var(--line);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: min(340px, 64%);
  height: 8px;
  background: repeating-linear-gradient(90deg, var(--pulse) 0 2px, transparent 2px 14px);
  opacity: .5;
}
.page-faq .faq-hero .eyebrow {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--pulse);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--pulse);
}
.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  font-size: clamp(32px, 9vw, 56px);
  font-weight: 700;
  line-height: 1.16;
  letter-spacing: .14em;
  color: var(--ink);
}
.page-faq .faq-hero__lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 16px;
  line-height: 1.9;
  color: var(--muted);
}
.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 24px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .faq-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--line);
  background: rgba(20, 28, 66, .72);
}
.page-faq .faq-chip__k {
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--dim);
}
.page-faq .faq-chip__v {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--pulse);
}
.page-faq .faq-chip--gold .faq-chip__v { color: var(--gold); }

/* ---------- 主副栅格 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: 30px;
  padding: 34px 0 0;
}

/* ---------- 左侧索引 ---------- */
.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  color: var(--dim);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-index__list li { flex: none; }
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 12px;
  border: 2px solid var(--line);
  background: rgba(20, 28, 66, .72);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.3;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color .22s var(--ease), background .22s var(--ease),
    box-shadow .22s var(--ease), transform .22s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: rgba(34, 211, 197, .6);
  background: var(--deep);
  box-shadow: 4px 4px 0 rgba(34, 211, 197, .16);
  transform: translateY(-2px);
}
.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--pulse);
}
.page-faq .status-dot {
  flex: none;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--dim);
  box-shadow: 0 0 0 3px rgba(95, 109, 149, .16);
  transition: background .22s var(--ease), box-shadow .22s var(--ease);
}
.page-faq .faq-index__link:hover .status-dot,
.page-faq .faq-index__link:focus-visible .status-dot {
  background: var(--pulse);
  box-shadow: 0 0 0 4px rgba(34, 211, 197, .22);
}

/* ---------- 章节 ---------- */
.page-faq .faq-sec {
  padding: 0 0 40px;
  margin: 0 0 40px;
  border-bottom: 2px solid var(--line-soft);
  scroll-margin-top: calc(var(--nav-h) + 24px);
}
.page-faq .faq-sec:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}
.page-faq .section-head { max-width: 68ch; }
.page-faq .section-head .eyebrow {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--nebula);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--violet);
}
.page-faq .section-title {
  margin: 12px 0 10px;
  font-size: clamp(21px, 5.4vw, 29px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: .08em;
  color: var(--ink);
}
.page-faq .section-note {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}

/* ---------- 图 ---------- */
.page-faq .faq-figure { margin: 26px 0 0; }
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(.92) contrast(1.04);
}
.page-faq .media-caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--dim);
}

/* ---------- 保修对照 ---------- */
.page-faq .warranty-grid {
  display: grid;
  gap: 16px;
  margin-top: 26px;
}
.page-faq .warranty-card {
  padding: 22px 20px 24px;
  border: 2px solid var(--line);
  background: rgba(20, 28, 66, .82);
  box-shadow: 7px 7px 0 rgba(36, 48, 102, .55);
}
.page-faq .warranty-card--five {
  border-color: rgba(230, 180, 85, .5);
  box-shadow: 7px 7px 0 rgba(230, 180, 85, .14);
}
.page-faq .warranty-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .warranty-card__term {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 22px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--pulse);
}
.page-faq .warranty-card--five .warranty-card__term { color: var(--gold); }
.page-faq .warranty-card__sub {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.7;
  letter-spacing: .04em;
  color: var(--muted);
}
.page-faq .warranty-list {
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .warranty-list li {
  display: flex;
  gap: 12px;
  padding: 9px 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--ink);
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .warranty-list li:last-child { border-bottom: 0; }
.page-faq .warranty-list li::before {
  content: "";
  flex: none;
  width: 14px;
  height: 2px;
  margin-top: 14px;
  background: var(--pulse);
}
.page-faq .warranty-card--five .warranty-list li::before { background: var(--gold); }

/* ---------- 问答折叠 ---------- */
.page-faq .faq-group { margin-top: 26px; }
.page-faq .faq-group--tight { margin-top: 20px; }
.page-faq .qa {
  border: 2px solid var(--line-soft);
  background: rgba(20, 28, 66, .5);
  margin-bottom: 10px;
  transition: border-color .25s var(--ease), background .25s var(--ease);
}
.page-faq .qa:last-child { margin-bottom: 0; }
.page-faq .qa[open] {
  border-color: rgba(34, 211, 197, .45);
  background: rgba(20, 28, 66, .94);
}
.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 16px;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--ink);
  list-style: none;
}
.page-faq .qa__q::-webkit-details-marker { display: none; }
.page-faq .qa__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  padding-left: 12px;
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1.1;
  color: var(--pulse);
  transition: transform .25s var(--ease);
}
.page-faq .qa[open] .qa__q::after { transform: rotate(45deg); }
.page-faq .qa__no {
  flex: none;
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  color: var(--dim);
  transition: color .25s var(--ease);
}
.page-faq .qa[open] .qa__no { color: var(--pulse); }
.page-faq .qa__a {
  padding: 0 16px 18px 42px;
  border-top: 1px solid var(--line-soft);
  animation: faq-ink .32s var(--ease) both;
}
.page-faq .qa__a p {
  margin: 14px 0 0;
  font-size: 14.5px;
  line-height: 1.95;
  color: var(--muted);
}
@keyframes faq-ink {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 开通流程 ---------- */
.page-faq .faq-split {
  display: grid;
  gap: 26px;
  margin-top: 26px;
}
.page-faq .step-list {
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-faq .step {
  display: flex;
  gap: 14px;
  padding-bottom: 18px;
}
.page-faq .step:last-child { padding-bottom: 0; }
.page-faq .step__no {
  flex: none;
  width: 28px;
  height: 28px;
  display: grid;
  place-items: center;
  border: 2px solid var(--pulse);
  background: rgba(34, 211, 197, .08);
  color: var(--pulse);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
}
.page-faq .step__body h3 {
  margin: 2px 0 0;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .04em;
  color: var(--ink);
}
.page-faq .step__body p {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 响应时段 ---------- */
.page-faq .resp-track {
  display: flex;
  flex-direction: column;
  margin-top: 26px;
  border: 2px solid var(--line);
  background: rgba(20, 28, 66, .7);
}
.page-faq .resp-seg {
  padding: 16px 16px 18px;
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .resp-seg:last-child { border-bottom: 0; }
.page-faq .resp-seg--live {
  background: linear-gradient(180deg, rgba(34, 211, 197, .16), rgba(34, 211, 197, .03));
  border-left: 3px solid var(--pulse);
}
.page-faq .resp-seg__time {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--dim);
}
.page-faq .resp-seg--live .resp-seg__time { color: var(--pulse); }
.page-faq .resp-seg__name {
  display: block;
  margin-top: 8px;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .05em;
  color: var(--ink);
}
.page-faq .resp-seg--lead .resp-seg__name,
.page-faq .resp-seg--tail .resp-seg__name { color: var(--muted); }
.page-faq .resp-seg__desc {
  margin: 8px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--muted);
}

/* ---------- 渠道 ---------- */
.page-faq .channel-list {
  display: grid;
  gap: 14px;
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
}
.page-faq .channel {
  padding: 18px;
  border: 2px solid var(--line);
  background: rgba(20, 28, 66, .7);
  transition: border-color .22s var(--ease), transform .22s var(--ease), box-shadow .22s var(--ease);
}
.page-faq .channel:hover {
  border-color: rgba(34, 211, 197, .5);
  transform: translateY(-2px);
  box-shadow: 5px 5px 0 rgba(34, 211, 197, .12);
}
.page-faq .channel__name {
  margin: 14px 0 0;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--ink);
}
.page-faq .channel__desc {
  margin: 10px 0 0;
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--muted);
}
.page-faq .channel__foot {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .06em;
  color: var(--gold);
  word-break: break-all;
}
.page-faq .channel-note {
  margin: 18px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--wine);
  font-size: 14px;
  line-height: 1.85;
  color: var(--muted);
}

/* ---------- 结尾行动区 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-top: 48px;
  padding: 28px 22px;
  border: 2px solid var(--line);
  background:
    radial-gradient(520px 280px at 88% 0%, rgba(108, 75, 216, .28), transparent 68%),
    var(--deep);
  box-shadow: 8px 8px 0 rgba(36, 48, 102, .6);
}
.page-faq .faq-cta .eyebrow {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--gold);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gold);
}
.page-faq .faq-cta__title {
  margin: 14px 0 0;
  font-size: clamp(20px, 5vw, 27px);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: .07em;
  color: var(--ink);
}
.page-faq .faq-cta__note {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 15px;
  line-height: 1.9;
  color: var(--muted);
}
.page-faq .faq-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 920px) {
  .page-faq .faq-shell {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--nav-h) + 20px);
  }
  .page-faq .faq-index__list {
    display: block;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__list li { margin-bottom: 8px; }
  .page-faq .faq-index__link { width: 100%; }
  .page-faq .faq-index__link .status-dot { margin-left: auto; }

  .page-faq .warranty-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 22px;
  }
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 390px;
    gap: 34px;
    align-items: start;
  }
  .page-faq .channel-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
  }
  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 40px;
    padding: 32px 30px;
  }
  .page-faq .faq-cta__actions { flex: none; }
}

@media (min-width: 760px) {
  .page-faq .resp-track { flex-direction: row; }
  .page-faq .resp-seg {
    border-bottom: 0;
    border-right: 1px solid var(--line-soft);
  }
  .page-faq .resp-seg:last-child { border-right: 0; }
  .page-faq .resp-seg--lead { flex: 9; }
  .page-faq .resp-seg--live { flex: 9; }
  .page-faq .resp-seg--tail { flex: 6; }
}

@media (min-width: 680px) {
  .page-faq .breadcrumb { padding-top: 26px; }
  .page-faq .faq-hero { padding: 32px 0 42px; }
  .page-faq .faq-shell { padding-top: 42px; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa__a { animation: none; }
  .page-faq .qa__q::after,
  .page-faq .qa,
  .page-faq .qa__no,
  .page-faq .faq-index__link,
  .page-faq .faq-index__link .status-dot,
  .page-faq .channel {
    transition: none;
  }
  .page-faq .faq-index__link:hover,
  .page-faq .channel:hover { transform: none; }
}
</main>