.page-faq {
  --faq-rail-w: 200px;
  --faq-gap: 48px;
  padding-bottom: 80px;
}

.page-faq .breadcrumb {
  padding: 22px 0 6px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-head {
  position: relative;
  padding: 22px 0 52px;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(90% 150% at 6% 0%, rgba(22, 224, 192, 0.12) 0%, transparent 58%),
    linear-gradient(180deg, rgba(6, 42, 34, 0.9) 0%, rgba(4, 28, 23, 0.24) 68%, rgba(4, 28, 23, 0) 100%);
}

.page-faq .faq-head::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  height: 1px;
  background: linear-gradient(90deg, var(--cyan) 0%, rgba(22, 224, 192, 0.16) 42%, transparent 78%);
}

.page-faq .faq-head__inner {
  position: relative;
}

.page-faq .faq-head__title {
  margin: 14px 0 0;
  max-width: 19ch;
  font-size: clamp(28px, 6.4vw, 52px);
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.14;
  color: var(--mist);
}

.page-faq .faq-head__lede {
  margin: 18px 0 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--sage);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  max-width: 720px;
  margin-top: 34px;
  padding-top: 22px;
  border-top: 1px dashed var(--line-soft);
}

.page-faq .faq-stats .stat__value {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(17px, 3.4vw, 24px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cyan);
}

.page-faq .faq-stats .stat__label {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--sage);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-top: 34px;
}

.page-faq .faq-rail {
  padding-left: 14px;
  border-left: 1px solid var(--cyan-line);
}

.page-faq .faq-rail__cap {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.22em;
  color: var(--sage);
}

.page-faq .faq-rail__nav {
  display: grid;
  gap: 4px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 7px 0;
  font-size: 13.5px;
  line-height: 1.4;
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid var(--line-soft);
  transition: color 0.2s ease, padding-left 0.2s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--cyan);
  padding-left: 4px;
}

.page-faq .faq-rail__no {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .faq-rail__note {
  margin: 18px 0 0;
  font-size: 12.5px;
  line-height: 1.75;
  color: var(--sage);
}

.page-faq .faq-rail__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-toolbar {
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-toolbar .chip-row {
  padding: 4px 0 14px;
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  display: block;
}

.page-faq .faq-group {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 4px 12px;
  padding: 34px 0 10px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__no {
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: 18px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-group__hint {
  flex: 1 1 auto;
  min-width: 140px;
  font-size: 12px;
  line-height: 1.6;
  color: var(--sage);
}

.page-faq .faq-item {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 18px 12px 18px 0;
  border-bottom: 1px solid var(--line-soft);
  border-radius: var(--r);
  transition: background 0.2s ease;
}

.page-faq .faq-item:hover {
  background: var(--glass-soft);
}

.page-faq .faq-item[open] {
  background: var(--glass-soft);
  box-shadow: inset 2px 0 0 var(--cyan);
}

.page-faq .faq-item__side {
  display: flex;
  align-items: center;
  gap: 10px;
  padding-bottom: 8px;
}

.page-faq .faq-item__num {
  font-size: 11.5px;
  letter-spacing: 0.14em;
  color: var(--cyan);
}

.page-faq .faq-item__side .tag--quiet {
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--sage);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin: 0;
  padding: 2px 0;
  cursor: pointer;
  list-style: none;
  color: var(--mist);
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.55;
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.2;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
}

.page-faq .faq-item__title {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
  line-height: inherit;
}

.page-faq .faq-item__a {
  padding: 10px 8px 2px 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sage);
}

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

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--cyan-line);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 20px 0 6px;
}

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

.page-faq .faq-figure .media-frame__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 人工通道 ---------- */
.page-faq .faq-help {
  margin-top: 64px;
  padding-top: 8px;
}

.page-faq .faq-help__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 26px;
  align-items: start;
}

.page-faq .faq-help__body {
  padding: 26px 22px 28px;
  border-left: 2px solid var(--amber);
}

.page-faq .faq-help__title {
  margin: 12px 0 0;
  font-size: clamp(20px, 4.4vw, 28px);
  font-weight: 700;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--mist);
}

.page-faq .faq-help__text {
  margin: 14px 0 0;
  max-width: 54ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--sage);
}

.page-faq .faq-help__list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1px;
  background: var(--line-soft);
}

.page-faq .faq-help__item {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 12px 14px;
  background: var(--char);
}

.page-faq .faq-help__label {
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--amber);
}

.page-faq .faq-help__value {
  font-size: 14px;
  line-height: 1.5;
  color: var(--mist);
  word-break: break-word;
}

.page-faq .faq-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

.page-faq .faq-help__figure {
  margin: 0;
}

.page-faq .faq-help__figure .media-frame__cap {
  display: block;
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.7;
  color: var(--sage);
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: 0 var(--faq-gap);
    padding-top: 44px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-item {
    grid-template-columns: 148px minmax(0, 1fr);
    column-gap: 24px;
    padding: 22px 18px 22px 18px;
    margin: 0 -18px;
  }

  .page-faq .faq-item__side {
    grid-column: 1;
    grid-row: 1 / span 2;
    align-self: start;
    padding: 3px 0 0;
  }

  .page-faq .faq-item__q {
    grid-column: 2;
    grid-row: 1;
  }

  .page-faq .faq-item__a {
    grid-column: 2;
    grid-row: 2;
    max-width: 62ch;
    padding-right: 16px;
  }

  .page-faq .faq-figure {
    margin: 26px 0 10px 172px;
    max-width: 640px;
  }

  .page-faq .faq-help__grid {
    grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
    gap: 40px;
  }

  .page-faq .faq-help__body {
    padding: 32px 30px 34px;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-group {
    padding-top: 40px;
  }

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