.page-faq {
  --faq-ink: #17181B;
  --faq-ink-soft: #5B5E66;
  --faq-dark-text: #EFEAE1;
  --faq-dark-soft: #9BA0A9;
  --faq-hair: rgba(212, 175, 55, .14);
  --faq-hair-ink: rgba(138, 106, 22, .26);
  background: var(--obsidian);
  color: var(--faq-dark-text);
}

.page-faq p { margin: 0; }

.page-faq .faq-sec { scroll-margin-top: 84px; }

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 32px 0 44px;
  background:
    radial-gradient(115% 120% at 10% -14%, rgba(212, 175, 55, .17), transparent 58%),
    radial-gradient(80% 90% at 96% 4%, rgba(47, 211, 196, .07), transparent 62%),
    linear-gradient(180deg, var(--obsidian) 0%, #0E1014 62%, var(--deep) 100%);
  border-bottom: 1px solid var(--line-soft);
  overflow: hidden;
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-bottom: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--graphite);
}
.page-faq .breadcrumb a {
  color: var(--graphite);
  text-decoration: none;
  transition: color var(--dur) var(--ease);
}
.page-faq .breadcrumb a:hover { color: var(--gold-light); }
.page-faq .breadcrumb__sep { color: var(--mist); }
.page-faq .breadcrumb [aria-current="page"] { color: var(--gold); }

.page-faq .faq-hero__eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-hero__title {
  margin: 16px 0 0;
  max-width: 22ch;
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 8vw, 40px);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--ivory);
}

.page-faq .faq-hero__lede {
  margin-top: 20px;
  max-width: 60ch;
  font-size: 16.5px;
  line-height: 1.8;
  color: var(--faq-dark-soft);
}

.page-faq .faq-jump {
  list-style: none;
  margin: 34px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
.page-faq .faq-jump li {
  border-bottom: 1px solid var(--line-soft);
}
.page-faq .faq-jump li:last-child { border-bottom: 0; }

.page-faq .faq-jump a {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
  padding: 12px 6px;
  font-size: 15px;
  font-weight: 600;
  color: var(--faq-dark-text);
  text-decoration: none;
  transition: color var(--dur) var(--ease), padding-left var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-jump a:hover,
.page-faq .faq-jump a:focus-visible {
  color: var(--gold-light);
  padding-left: 12px;
  background: rgba(212, 175, 55, .06);
}
.page-faq .faq-jump .mono {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--gold);
}

/* ---------- 区块 ---------- */
.page-faq .faq-sec { padding: 52px 0; }

.page-faq .faq-sec--dark {
  background: linear-gradient(180deg, var(--deep) 0%, #101317 100%);
  color: var(--faq-dark-text);
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-sec--ivory {
  background: var(--ivory);
  color: var(--faq-ink);
  border-top: 1px solid var(--faq-hair-ink);
}

.page-faq .section-head { margin-bottom: 30px; }

.page-faq .faq-sec--dark .section-num { color: var(--gold); }
.page-faq .faq-sec--ivory .section-num { color: var(--gold-dark); }

.page-faq .faq-sec--dark .section-title { color: var(--ivory); }
.page-faq .faq-sec--ivory .section-title { color: var(--faq-ink); }

.page-faq .faq-sec--dark .section-desc { color: var(--faq-dark-soft); }
.page-faq .faq-sec--ivory .section-desc { color: var(--faq-ink-soft); }

/* ---------- 三步上手 ---------- */
.page-faq .faq-figure {
  margin: 0 0 32px;
  border-radius: var(--radius);
  border: 1px solid var(--faq-hair);
  background: linear-gradient(135deg, rgba(212, 175, 55, .09), rgba(11, 12, 14, .6) 62%);
  overflow: hidden;
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-figure .media-frame__cap {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .1em;
  color: var(--graphite);
  padding: 10px 14px 12px;
}

.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}

.page-faq .faq-step {
  position: relative;
  padding: 18px 18px 20px 22px;
  background: rgba(212, 175, 55, .045);
  border-left: 2px solid var(--gold);
  border-radius: 0 var(--radius) var(--radius) 0;
  transition: background-color var(--dur) var(--ease);
}
.page-faq .faq-step:hover { background: rgba(212, 175, 55, .09); }

.page-faq .faq-step__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gold);
  margin-bottom: 10px;
}
.page-faq .faq-step__title {
  margin: 0 0 8px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.4;
  letter-spacing: -.01em;
  color: var(--ivory);
}
.page-faq .faq-step__desc {
  font-size: 15px;
  line-height: 1.75;
  color: var(--faq-dark-soft);
}

/* ---------- 问答 ---------- */
.page-faq .faq-qa {
  display: grid;
  gap: 10px;
  max-width: 960px;
}

.page-faq .faq-item {
  border: 1px solid var(--line-soft);
  border-radius: var(--radius);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}
.page-faq .faq-sec--dark .faq-item {
  border-color: var(--line-soft);
  background: rgba(255, 255, 255, .02);
}
.page-faq .faq-sec--ivory .faq-item {
  border-color: var(--faq-hair-ink);
  background: rgba(255, 255, 255, .55);
}
.page-faq .faq-item:hover { border-color: var(--gold); }

.page-faq .faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 12px;
  min-height: 44px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
}
.page-faq .faq-item__q::-webkit-details-marker { display: none; }
.page-faq .faq-item__q::after {
  content: "+";
  margin-left: auto;
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 500;
  color: var(--gold);
  transition: transform var(--dur) var(--ease);
}
.page-faq .faq-item[open] .faq-item__q::after { content: "–"; }
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: -2px;
  border-radius: var(--radius);
}

.page-faq .faq-sec--dark .faq-item__q { color: var(--faq-dark-text); }
.page-faq .faq-sec--ivory .faq-item__q { color: var(--faq-ink); }

.page-faq .faq-item__num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
}
.page-faq .faq-sec--dark .faq-item__num { color: var(--gold); }
.page-faq .faq-sec--ivory .faq-item__num { color: var(--gold-dark); }

.page-faq .faq-item__a {
  position: relative;
  padding: 0 18px 18px;
}
.page-faq .faq-item__a::before {
  content: "";
  position: absolute;
  left: 28px;
  top: 2px;
  bottom: 18px;
  width: 1px;
  background: linear-gradient(180deg, var(--gold), rgba(212, 175, 55, 0));
  display: none;
}
.page-faq .faq-item__a p {
  font-size: 15px;
  line-height: 1.8;
}
.page-faq .faq-sec--dark .faq-item__a p { color: var(--faq-dark-soft); }
.page-faq .faq-sec--ivory .faq-item__a p { color: var(--faq-ink-soft); }

.page-faq .faq-item__a a {
  color: var(--gold-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 106, 22, .4);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-sec--dark .faq-item__a a {
  color: var(--gold-light);
  border-bottom-color: rgba(235, 208, 138, .45);
}
.page-faq .faq-item__a a:hover { color: var(--gold); border-bottom-color: var(--gold); }

.page-faq .faq-aside {
  max-width: 960px;
  margin-top: 20px;
  padding: 16px 18px;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--faq-ink-soft);
  border-top: 1px solid var(--faq-hair-ink);
}
.page-faq .faq-aside a {
  color: var(--gold-dark);
  font-weight: 700;
  text-decoration: none;
  border-bottom: 1px solid rgba(138, 106, 22, .45);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}
.page-faq .faq-aside a:hover { color: var(--gold); border-bottom-color: var(--gold); }

/* ---------- 机型适配：图文错位 ---------- */
.page-faq .faq-device {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
}

.page-faq .faq-device__figure {
  margin: 0;
  border: 1px solid var(--faq-hair);
  border-radius: var(--radius);
  background:
    radial-gradient(90% 80% at 20% 0%, rgba(212, 175, 55, .13), transparent 60%),
    linear-gradient(160deg, rgba(47, 211, 196, .05), rgba(11, 12, 14, .7));
  overflow: hidden;
}
.page-faq .faq-device__figure img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
}
.page-faq .faq-device__figure .media-frame__cap {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  line-height: 1.6;
  color: var(--graphite);
  padding: 10px 14px 12px;
}

/* ---------- 结尾引导 ---------- */
.page-faq .faq-cta {
  max-width: 960px;
  margin-top: 30px;
  padding-top: 24px;
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 16px;
}
.page-faq .faq-cta__text {
  font-size: 16px;
  line-height: 1.75;
  color: var(--faq-dark-soft);
  max-width: 52ch;
}
.page-faq .faq-cta .btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 44px;
  padding: 0 22px;
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  border-radius: var(--radius);
}

/* ---------- 进入视野淡入 ---------- */
.page-faq .reveal-on {
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 420ms var(--ease), transform 420ms var(--ease);
}
.page-faq .reveal-on.is-in {
  opacity: 1;
  transform: none;
}

/* ---------- 中等屏幕 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero { padding: 48px 0 60px; }
  .page-faq .faq-hero__title { font-size: clamp(38px, 5.6vw, 54px); }
  .page-faq .faq-hero__lede { font-size: 17.5px; }

  .page-faq .faq-jump {
    grid-template-columns: repeat(3, 1fr);
    border-bottom: 1px solid var(--line);
  }
  .page-faq .faq-jump li {
    border-bottom: 1px solid var(--line-soft);
    border-right: 1px solid var(--line-soft);
  }
  .page-faq .faq-jump li:nth-child(3n) { border-right: 0; }
  .page-faq .faq-jump a { padding: 14px 16px; }

  .page-faq .faq-sec { padding: 76px 0; }

  .page-faq .faq-steps { grid-template-columns: repeat(3, 1fr); gap: 16px; }

  .page-faq .faq-item__a { padding: 0 22px 20px 58px; }
  .page-faq .faq-item__a::before { display: block; }

  .page-faq .faq-device { grid-template-columns: 7fr 5fr; gap: 32px; align-items: start; }
}

/* ---------- 桌面 ---------- */
@media (min-width: 1024px) {
  .page-faq .faq-jump { grid-template-columns: repeat(6, 1fr); }
  .page-faq .faq-jump li { border-right: 1px solid var(--line-soft); }
  .page-faq .faq-jump li:nth-child(3n) { border-right: 1px solid var(--line-soft); }
  .page-faq .faq-jump li:last-child { border-right: 0; }
  .page-faq .faq-jump a { padding: 16px 18px; }

  .page-faq .faq-sec { padding: 92px 0; }
  .page-faq .section-head { margin-bottom: 40px; }

  .page-faq .faq-hero { padding: 56px 0 72px; }

  .page-faq .faq-cta {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    gap: 32px;
  }
  .page-faq .faq-cta__text { max-width: 60ch; }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .reveal-on {
    opacity: 1;
    transform: none;
    transition: none;
  }
}