/* ===== 常见问答页面专属样式 ===== */
.page-faq {
  background-color: var(--color-bg);
  background-image:
    linear-gradient(rgba(11, 29, 58, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(11, 29, 58, 0.03) 1px, transparent 1px);
  background-size: 28px 28px;
}

/* ---- Hero 区 ---- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  color: var(--color-surface);
  padding: 28px 0 42px;
  background:
    radial-gradient(circle at 82% 18%, rgba(0, 229, 255, 0.22) 0%, transparent 48%),
    linear-gradient(118deg, var(--color-navy-deep) 0%, var(--color-navy) 60%, #12294a 100%);
}
.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--color-orange) 0%, var(--color-orange-soft) 18%, var(--color-cyan) 26%, transparent 38%);
}
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  right: -60px;
  top: -60px;
  width: 240px;
  height: 240px;
  background: rgba(0, 229, 255, 0.1);
  clip-path: polygon(30% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}
.page-faq .faq-hero__kicker {
  margin: 14px 0 0;
  font-size: 13px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-cyan);
}
.page-faq .faq-hero__title {
  margin: 8px 0 16px;
  max-width: 860px;
  font-family: var(--font-display);
  font-size: 30px;
  line-height: 1.16;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-surface);
}
.page-faq .faq-hero__title span {
  color: var(--color-orange-soft);
}
.page-faq .faq-hero__desc {
  max-width: 680px;
  margin: 0;
  font-size: 16px;
  line-height: 1.7;
  color: rgba(255, 255, 255, 0.75);
}
.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}
.page-faq .faq-jump__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border: 1px solid rgba(255, 255, 255, 0.45);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.08);
  color: var(--color-surface);
  font-size: 14px;
  font-weight: 600;
  text-decoration: none;
  transition: border-color var(--speed-fast), background var(--speed-fast);
}
.page-faq .faq-jump__link:hover,
.page-faq .faq-jump__link:focus-visible {
  border-color: var(--color-cyan);
  background: rgba(0, 229, 255, 0.14);
}
.page-faq .faq-jump__idx {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  color: var(--color-cyan);
}

/* ---- 总体布局 ---- */
.page-faq .faq-wrap {
  padding-top: 28px;
  padding-bottom: 64px;
}

/* ---- 侧栏 ---- */
.page-faq .faq-rail__card {
  background: var(--color-surface);
  border: 1px solid rgba(11, 29, 58, 0.1);
  border-top: 4px solid var(--color-cyan);
  border-radius: var(--radius-md);
  padding: 20px 18px;
  box-shadow: var(--shadow-card);
}
.page-faq .faq-rail__title {
  font-size: 13px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.page-faq .faq-rail__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}
.page-faq .faq-rail__item {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px dashed rgba(11, 29, 58, 0.16);
  font-size: 14px;
  color: var(--color-muted);
}
.page-faq .faq-rail__item:last-child {
  border-bottom: 0;
}
.page-faq .faq-rail__item strong {
  font-family: var(--font-display);
  font-style: italic;
  font-size: 22px;
  line-height: 1;
  white-space: nowrap;
  color: var(--color-navy);
  background: linear-gradient(120deg, rgba(0, 229, 255, 0.2), rgba(243, 156, 18, 0.16));
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}
.page-faq .faq-rail__note {
  margin-top: 16px;
  padding: 14px 16px;
  border: 1px dashed var(--color-orange);
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.6;
  color: var(--color-muted);
}
.page-faq .faq-rail__note p {
  margin: 0 0 8px;
}
.page-faq .faq-rail__note p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-rail__note a {
  color: var(--color-orange);
  font-weight: 600;
  text-underline-offset: 2px;
}

/* ---- 章节卡片 ---- */
.page-faq .faq-section {
  margin-bottom: 44px;
  scroll-margin-top: calc(var(--header-height) + 18px);
}
.page-faq .faq-section__head {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 22px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(11, 29, 58, 0.12);
}
.page-faq .faq-section__idx {
  flex: 0 0 auto;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 26px;
  line-height: 1;
  color: var(--color-orange);
  border: 1px solid var(--color-orange);
  border-radius: var(--radius-sm);
  padding: 6px 8px;
}
.page-faq .faq-section__title {
  margin: 0;
  font-size: 22px;
  line-height: 1.3;
  color: var(--color-navy);
}
.page-faq .faq-section__sub {
  margin: 4px 0 0;
  font-size: 13px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* ---- 数据更新图 ---- */
.page-faq .faq-figure {
  margin: 0 0 20px;
}
.page-faq .faq-figure__img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid rgba(11, 29, 58, 0.14);
  border-radius: var(--radius-md);
  background:
    linear-gradient(115deg, rgba(0, 229, 255, 0.14), rgba(255, 255, 255, 0.9));
}
.page-faq .faq-figure__cap {
  display: block;
  margin-top: 8px;
  padding-bottom: 10px;
  border-bottom: 1px dashed rgba(11, 29, 58, 0.16);
  font-size: 13px;
  line-height: 1.6;
  color: var(--color-muted);
}
.page-faq .faq-figure__cap em {
  font-style: normal;
  font-weight: 700;
  color: var(--color-orange);
}

/* ---- 折叠面板 ---- */
.page-faq .faq-item {
  background: var(--color-surface);
  border: 1px solid rgba(11, 29, 58, 0.12);
  border-radius: var(--radius-md);
  padding: 0 16px;
  margin-bottom: 12px;
  list-style: none;
  transition: border-color var(--speed-fast), box-shadow var(--speed-fast);
}
.page-faq .faq-item:hover {
  border-color: var(--color-cyan);
}
.page-faq .faq-item[open] {
  border-left: 4px solid var(--color-orange);
  box-shadow: var(--shadow-card);
}
.page-faq .faq-item__q {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px 0;
  cursor: pointer;
  font-size: 16px;
  line-height: 1.45;
  font-weight: 600;
  color: var(--color-navy);
}
.page-faq .faq-item__q::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--color-cyan);
  outline-offset: 4px;
  border-radius: var(--radius-sm);
}
.page-faq .faq-item__num {
  flex: 0 0 30px;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 14px;
  line-height: 1;
  color: var(--color-orange);
}
.page-faq .faq-item__title {
  flex: 1 1 auto;
  transition: color var(--speed-fast);
}
.page-faq .faq-item[open] .faq-item__title {
  color: var(--color-orange);
}
.page-faq .faq-item__icon {
  flex: 0 0 auto;
  position: relative;
  width: 18px;
  height: 18px;
  border: 1.5px solid var(--color-cyan);
  border-radius: 2px;
  margin-left: auto;
}
.page-faq .faq-item__icon::before,
.page-faq .faq-item__icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 9px;
  height: 1.5px;
  background: var(--color-cyan);
  transition: transform var(--speed-fast), opacity var(--speed-fast);
}
.page-faq .faq-item__icon::before {
  transform: translate(-50%, -50%) rotate(90deg);
}
.page-faq .faq-item__icon::after {
  transform: translate(-50%, -50%) rotate(0deg);
}
.page-faq .faq-item[open] .faq-item__icon {
  border-color: var(--color-orange);
}
.page-faq .faq-item[open] .faq-item__icon::before,
.page-faq .faq-item[open] .faq-item__icon::after {
  background: var(--color-orange);
}
.page-faq .faq-item[open] .faq-item__icon::before {
  transform: translate(-50%, -50%) rotate(0deg);
  opacity: 0;
}
.page-faq .faq-item__a {
  border-top: 1px dashed rgba(11, 29, 58, 0.14);
  padding: 14px 0 18px;
  animation: faq-reveal var(--speed-base) var(--ease-out);
}
@keyframes faq-reveal {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}
.page-faq .faq-item__a p {
  margin: 0 0 10px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--color-muted);
}
.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__a a {
  color: var(--color-orange);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 2px;
}

/* ---- 联系区 ---- */
.page-faq .faq-contact {
  display: grid;
  gap: 18px;
  margin-bottom: 20px;
}
.page-faq .faq-contact__figure {
  margin: 0;
}
.page-faq .faq-contact__img {
  width: 100%;
  height: auto;
  max-height: 260px;
  object-fit: cover;
  display: block;
  border: 1px solid rgba(11, 29, 58, 0.14);
  border-radius: var(--radius-md);
  background:
    linear-gradient(135deg, rgba(0, 229, 255, 0.16), rgba(243, 156, 18, 0.12));
}
.page-faq .faq-contact__list {
  display: grid;
  gap: 12px;
}
.page-faq .faq-contact__item {
  background: var(--color-surface);
  border: 1px solid rgba(11, 29, 58, 0.1);
  border-left: 4px solid var(--color-orange);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  box-shadow: var(--shadow-card);
}
.page-faq .faq-contact__label {
  display: block;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
}
.page-faq .faq-contact__value {
  display: inline-block;
  margin-top: 4px;
  font-size: 18px;
  font-weight: 700;
  color: var(--color-navy);
  text-decoration: none;
}
.page-faq .faq-contact__value:hover,
.page-faq .faq-contact__value:focus-visible {
  color: var(--color-orange);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .faq-contact__desc {
  margin: 6px 0 0;
  font-size: 13px;
  line-height: 1.5;
  color: var(--color-muted);
}

/* ---- 桌面端适配 ---- */
@media (min-width: 920px) {
  .page-faq .faq-hero {
    padding: 56px 0 72px;
  }
  .page-faq .faq-hero__title {
    font-size: 56px;
    max-width: 980px;
  }
  .page-faq .faq-hero__desc {
    font-size: 17px;
  }
  .page-faq .faq-wrap {
    display: grid;
    grid-template-columns: 250px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
    padding-top: 44px;
    padding-bottom: 88px;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--header-height) + 24px);
  }
  .page-faq .faq-main {
    display: grid;
    gap: 56px;
  }
  .page-faq .faq-section {
    margin-bottom: 0;
  }
  .page-faq .faq-item__q {
    padding: 18px 0;
    font-size: 17px;
  }
  .page-faq .faq-item__a {
    padding-bottom: 20px;
  }
  .page-faq .faq-contact {
    grid-template-columns: 340px minmax(0, 1fr);
    align-items: stretch;
  }
  .page-faq .faq-contact__img {
    max-height: none;
    height: 100%;
  }
  .page-faq .faq-contact__item {
    padding: 16px 18px;
  }
}