/* ===== 答疑索引页 · page-faq ===== */

.page-faq {
  --faq-accent: var(--cyan);
  --faq-gap: clamp(1.4rem, 4vw, 2.4rem);
  padding-bottom: clamp(3rem, 9vw, 6.5rem);
}

/* --- 面包屑区 --- */
.page-faq .faq-crumb {
  padding-top: clamp(1rem, 3vw, 1.8rem);
}

/* --- 首屏封面 --- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(1.2rem, 4vw, 2.6rem) 0 clamp(2rem, 5vw, 3.4rem);
  background:
    radial-gradient(115% 88% at 84% -6%, rgba(110, 74, 158, 0.32), transparent 62%),
    radial-gradient(88% 70% at 4% 18%, rgba(27, 59, 111, 0.48), transparent 66%);
}

.page-faq .faq-hero__inner {
  display: grid;
  gap: clamp(1.8rem, 5vw, 3.4rem);
  align-items: center;
}

.page-faq .faq-hero__title {
  font-family: var(--font-title);
  font-size: clamp(1.72rem, 6.2vw, 3.1rem);
  line-height: 1.14;
  letter-spacing: -0.01em;
  margin: 0.7rem 0 0;
  color: var(--mist);
  max-width: 20ch;
}

.page-faq .faq-hero__text {
  margin: 1rem 0 0;
  color: var(--fg-dim);
  max-width: 58ch;
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  margin: 1.5rem 0 0;
  padding-top: 1.1rem;
  border-top: 1px dashed var(--line);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--fg-faint);
}

.page-faq .faq-hero__meta-cell {
  position: relative;
  padding-left: 0.9rem;
}

.page-faq .faq-hero__meta-cell::before {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--cyan);
  transform: translateY(-50%);
}

.page-faq .faq-hero__meta-cell:nth-child(2)::before { background: var(--gold); }
.page-faq .faq-hero__meta-cell:nth-child(3)::before { background: var(--nebula); }

.page-faq .faq-hero__media {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-hero__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* --- 分组索引刻度带 --- */
.page-faq .faq-rail {
  position: relative;
  padding: 0.9rem 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  background: linear-gradient(90deg, rgba(27, 59, 111, 0.22), rgba(7, 10, 18, 0) 72%);
}

.page-faq .faq-rail__hint {
  margin: 0 0 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.page-faq .faq-rail__list {
  display: flex;
  gap: 0.5rem;
  margin: 0;
  padding: 0 0 0.35rem;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-rail__item {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.95rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--fg-dim);
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.25s var(--ease), color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  border-color: var(--cyan);
  color: var(--mist);
  background: rgba(57, 208, 216, 0.1);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  color: var(--fg-faint);
}

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

/* --- 分组骨架 --- */
.page-faq .faq-body {
  display: block;
}

.page-faq .faq-group {
  --accent: var(--cyan);
  position: relative;
  padding-top: clamp(2.2rem, 6vw, 3.6rem);
  padding-bottom: clamp(0.6rem, 2vw, 1rem);
  scroll-margin-top: calc(var(--bar-h) + 88px);
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2.2rem, 6vw, 3.6rem);
  border-top: 1px solid var(--line);
}

.page-faq .faq-group--cyan { --accent: var(--cyan); }
.page-faq .faq-group--gold { --accent: var(--gold); }
.page-faq .faq-group--moss { --accent: var(--moss); }
.page-faq .faq-group--nebula { --accent: var(--nebula); }
.page-faq .faq-group--clay { --accent: var(--clay); }

.page-faq .faq-group__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.9rem 1.1rem;
  align-items: start;
  margin-bottom: clamp(1.1rem, 3vw, 1.7rem);
  max-width: 76ch;
}

.page-faq .faq-group__index {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0 0.55rem;
  border-radius: 999px;
  background: var(--accent);
  color: var(--ink);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
}

.page-faq .faq-group__title {
  font-family: var(--font-serif);
  font-size: clamp(1.22rem, 3.6vw, 1.72rem);
  line-height: 1.35;
  margin: 0;
  color: var(--mist);
}

.page-faq .faq-group__lede {
  margin: 0.5rem 0 0;
  color: var(--fg-dim);
  font-size: 0.94rem;
  line-height: 1.75;
  max-width: 62ch;
}

/* --- 问答列表 --- */
.page-faq .faq-list {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(12, 18, 32, 0.72), rgba(7, 10, 18, 0.42));
  overflow: hidden;
}

.page-faq .faq-item {
  position: relative;
  border-bottom: 1px solid var(--line);
}

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

.page-faq .faq-item--hot::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.75rem;
  bottom: 0.75rem;
  width: 2px;
  border-radius: 2px;
  background: var(--clay);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.8rem;
  padding: 1rem 1.05rem;
  cursor: pointer;
  list-style: none;
  transition: background 0.25s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  background: rgba(57, 208, 216, 0.06);
}

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

.page-faq .faq-item__num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.12em;
  color: var(--fg-faint);
  line-height: 1.5;
}

.page-faq .faq-item--hot .faq-item__num {
  color: var(--clay);
}

.page-faq .faq-item__text {
  font-size: clamp(0.96rem, 2.3vw, 1.04rem);
  font-weight: 600;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .faq-item__mark {
  position: relative;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  border: 1px solid var(--line-strong);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--fg-dim);
  transition: opacity 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-item__mark::before {
  width: 0.66rem;
  height: 1px;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item__mark::after {
  width: 1px;
  height: 0.66rem;
  transform: translate(-50%, -50%);
}

.page-faq .faq-item[open] .faq-item__mark {
  background: var(--accent);
  border-color: var(--accent);
}

.page-faq .faq-item[open] .faq-item__mark::before {
  background: var(--ink);
}

.page-faq .faq-item[open] .faq-item__mark::after {
  opacity: 0;
}

.page-faq .faq-item[open] .faq-item__q {
  background: rgba(57, 208, 216, 0.05);
}

.page-faq .faq-item__a {
  padding: 0 1.05rem 1.15rem;
}

.page-faq .faq-item__a::before {
  content: "";
  display: block;
  height: 1px;
  margin-bottom: 0.85rem;
  background: var(--line);
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 0.93rem;
  line-height: 1.9;
  color: var(--fg-dim);
  max-width: 70ch;
}

/* --- 苹果版配图 --- */
.page-faq .faq-ios__media {
  margin: 0 0 clamp(1.2rem, 3vw, 1.8rem);
  border-radius: var(--radius);
  overflow: hidden;
}

.page-faq .faq-ios__media .media-frame__img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* --- 联系支持 --- */
.page-faq .faq-support {
  display: grid;
  gap: var(--faq-gap);
  padding: clamp(1.3rem, 4vw, 2rem);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background:
    radial-gradient(120% 120% at 100% 0%, rgba(217, 164, 65, 0.14), transparent 58%),
    linear-gradient(180deg, rgba(12, 18, 32, 0.78), rgba(7, 10, 18, 0.5));
}

.page-faq .faq-support__label {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-support__title {
  font-family: var(--font-serif);
  font-size: clamp(1.1rem, 3vw, 1.4rem);
  line-height: 1.4;
  margin: 0.6rem 0 0;
  color: var(--mist);
}

.page-faq .faq-support__text {
  margin: 0.75rem 0 1.4rem;
  font-size: 0.93rem;
  line-height: 1.9;
  color: var(--fg-dim);
  max-width: 62ch;
}

.page-faq .faq-support__channels {
  display: grid;
  gap: 0;
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq .faq-support__channel {
  display: grid;
  gap: 0.25rem;
  padding: 0.95rem 0;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-support__key {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--fg-faint);
}

.page-faq .faq-support__val {
  font-family: var(--font-mono);
  font-size: 0.94rem;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-support__note {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--fg-dim);
}

/* --- 平板及以上 --- */
@media (min-width: 768px) {
  .page-faq .faq-item__q {
    padding: 1.1rem 1.4rem;
  }

  .page-faq .faq-item__a {
    padding: 0 1.4rem 1.3rem;
  }

  .page-faq .faq-support__channels {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0 clamp(1rem, 3vw, 1.8rem);
  }

  .page-faq .faq-support__channel {
    border-bottom: 0;
    border-top: 1px solid var(--line);
    padding: 1.1rem 0 0;
  }

  .page-faq .faq-support__channels {
    border-top: 0;
  }
}

/* --- 桌面端 --- */
@media (min-width: 960px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, 0.92fr);
    align-items: center;
  }

  .page-faq .faq-hero__title {
    max-width: 18ch;
  }

  .page-faq .faq-rail__list {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .page-faq .faq-support {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: start;
  }

  .page-faq .faq-support__channels {
    grid-template-columns: minmax(0, 1fr);
    gap: 0;
  }

  .page-faq .faq-support__channel {
    border-top: 0;
    border-bottom: 1px solid var(--line);
    padding: 0.95rem 0;
  }

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

@media (min-width: 1200px) {
  .page-faq .faq-group {
    display: grid;
    grid-template-columns: minmax(0, 0.34fr) minmax(0, 0.66fr);
    column-gap: clamp(1.6rem, 4vw, 3.2rem);
    align-items: start;
  }

  .page-faq .faq-group__head {
    grid-template-columns: auto minmax(0, 1fr);
    margin-bottom: 0;
  }

  .page-faq .faq-group__lede {
    max-width: 30ch;
  }

  .page-faq .faq-group > .faq-ios__media,
  .page-faq .faq-group > .faq-support,
  .page-faq .faq-group > .faq-list {
    grid-column: 2;
  }

  .page-faq .faq-group > .faq-ios__media {
    margin-bottom: 1rem;
  }

  .page-faq .faq-ios__media + .faq-list {
    margin-top: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__q,
  .page-faq .faq-item__mark,
  .page-faq .faq-rail__link {
    transition: none;
  }
}
<<<END>>>