.page-faq {
  --faq-radius: 20px;
  --faq-pad: clamp(16px, 2.4vw, 26px);
  --faq-rail-w: 236px;
  position: relative;
}

/* 面包屑 */
.page-faq .breadcrumb {
  margin-bottom: clamp(18px, 3vw, 30px);
}
.page-faq .breadcrumb ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}
.page-faq .breadcrumb li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}
.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}
.page-faq .breadcrumb a:hover {
  color: var(--lime);
}
.page-faq .breadcrumb [aria-current="page"] {
  color: var(--ice);
}

/* 首屏 */
.page-faq .faq-hero {
  padding: clamp(22px, 4vw, 44px) 0 clamp(28px, 4vw, 52px);
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 80% at 88% -20%, rgba(76, 243, 155, 0.12), transparent 62%),
    radial-gradient(90% 60% at 2% 0%, rgba(255, 122, 47, 0.07), transparent 58%);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
}
.page-faq .faq-hero__lead h1 {
  margin: 14px 0 0;
  font-size: clamp(32px, 6.2vw, 68px);
  line-height: 1.03;
  letter-spacing: -0.02em;
  font-weight: 900;
}
.page-faq .faq-hero__lead .type-lede {
  margin: 18px 0 0;
  max-width: 36em;
  color: var(--ice);
  opacity: 0.84;
}
.page-faq .faq-hero__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(22px, 3vw, 30px);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.page-faq .faq-stats__cell {
  background: var(--panel);
  padding: clamp(14px, 2vw, 20px);
}
.page-faq .faq-stats__num {
  display: block;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(22px, 3vw, 30px);
  line-height: 1;
  color: var(--lime);
}
.page-faq .faq-stats__label {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 主体：分类竖轴 + 问答组 */
.page-faq .faq-body__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  padding: clamp(32px, 5vw, 64px) 0;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--mist);
}
.page-faq .faq-rail__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}
.page-faq .faq-rail__list::-webkit-scrollbar {
  display: none;
}
.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  white-space: nowrap;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: rgba(14, 22, 38, 0.72);
  color: var(--ice);
  font-size: 14px;
  text-decoration: none;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease), color 0.3s var(--ease);
}
.page-faq .faq-rail__link .num {
  font-size: 12px;
  color: var(--mist);
  transition: color 0.3s var(--ease);
}
.page-faq .faq-rail__link:hover {
  border-color: rgba(76, 243, 155, 0.5);
  color: var(--lime);
}
.page-faq .faq-rail__link:hover .num {
  color: var(--lime);
}
.page-faq .faq-rail__link[aria-current] {
  background: var(--lime);
  border-color: var(--lime);
  color: #05070e;
}
.page-faq .faq-rail__link[aria-current] .num {
  color: rgba(5, 7, 14, 0.65);
}

/* 问答组 */
.page-faq .faq-groups {
  display: grid;
  gap: clamp(42px, 6vw, 78px);
}
.page-faq .faq-group {
  scroll-margin-top: 112px;
}
.page-faq .faq-group__head {
  display: grid;
  gap: 10px;
  margin-bottom: clamp(18px, 2.4vw, 26px);
}
.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(24px, 3.4vw, 38px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  font-weight: 900;
}
.page-faq .faq-group__note {
  margin: 0;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 0 0 clamp(18px, 2.4vw, 26px);
}
.page-faq .faq-figure .media-frame {
  border-radius: var(--r-md);
  border: 1px solid var(--line);
}
.page-faq .faq-figure .media-frame img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 12.5px;
  line-height: 1.6;
  letter-spacing: 0.04em;
  color: var(--mist);
}

/* 手风琴 */
.page-faq .faq-item {
  margin-bottom: 12px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease),
    transform 0.3s var(--ease), margin-right 0.35s var(--ease);
}
.page-faq .faq-item:hover {
  border-color: rgba(76, 243, 155, 0.34);
}
.page-faq .faq-item[open] {
  border-color: rgba(76, 243, 155, 0.55);
  background:
    linear-gradient(180deg, rgba(76, 243, 155, 0.07), rgba(76, 243, 155, 0) 62%),
    var(--panel);
}
.page-faq .faq-item summary {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 16px var(--faq-pad);
  cursor: pointer;
  list-style: none;
}
.page-faq .faq-item summary::-webkit-details-marker {
  display: none;
}
.page-faq .faq-item summary:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}
.page-faq .faq-q {
  flex: 1 1 auto;
  order: 1;
  font-size: clamp(15px, 1.7vw, 17px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--ice);
}
.page-faq .faq-time.pill {
  order: 2;
  flex: 0 0 auto;
  margin-left: auto;
  padding: 4px 10px;
  border: 1px solid rgba(76, 243, 155, 0.32);
  border-radius: var(--pill);
  background: rgba(76, 243, 155, 0.1);
  color: var(--lime);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: 0.04em;
  white-space: nowrap;
}
.page-faq .faq-caret {
  order: 3;
  flex: 0 0 auto;
  position: relative;
  width: 22px;
  height: 22px;
  border: 1px solid var(--line);
  border-radius: 50%;
  transition: background 0.3s var(--ease), border-color 0.3s var(--ease);
}
.page-faq .faq-caret::before,
.page-faq .faq-caret::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--ice);
}
.page-faq .faq-caret::before {
  width: 10px;
  height: 1.5px;
}
.page-faq .faq-caret::after {
  width: 1.5px;
  height: 10px;
  transition: transform 0.3s var(--ease), opacity 0.3s var(--ease);
}
.page-faq .faq-item[open] .faq-caret {
  background: rgba(76, 243, 155, 0.16);
  border-color: rgba(76, 243, 155, 0.6);
}
.page-faq .faq-item[open] .faq-caret::before {
  background: var(--lime);
}
.page-faq .faq-item[open] .faq-caret::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0.2);
}

.page-faq .faq-item__body {
  position: relative;
  padding: 2px var(--faq-pad) 20px;
  animation: faqBodyIn 0.42s var(--ease) both;
}
.page-faq .faq-item__body::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 12px;
  width: 2px;
  border-radius: 0 2px 2px 0;
  background: linear-gradient(180deg, var(--lime), rgba(76, 243, 155, 0));
}
.page-faq .faq-item__body p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 15px;
  line-height: 1.78;
  color: rgba(234, 242, 255, 0.86);
}
.page-faq .faq-item__body p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-item__body .btn {
  margin-top: 4px;
}

@keyframes faqBodyIn {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 纠错流程节点 */
.page-faq .faq-figure--flow .media-frame {
  aspect-ratio: 12 / 7;
}
.page-faq .faq-flow {
  display: grid;
  gap: 10px;
  margin: 0 0 clamp(18px, 2.4vw, 26px);
  padding: 0;
  list-style: none;
}
.page-faq .faq-flow__node {
  position: relative;
  padding: 15px 16px;
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  background: rgba(14, 22, 38, 0.78);
  transition: border-color 0.3s var(--ease), background 0.3s var(--ease);
}
.page-faq .faq-flow__node:hover,
.page-faq .faq-flow__node:focus-visible {
  border-color: rgba(76, 243, 155, 0.5);
  background: rgba(27, 42, 68, 0.72);
  outline: none;
}
.page-faq .faq-flow__dot {
  display: block;
  width: 10px;
  height: 10px;
  margin-bottom: 10px;
  border-radius: 50%;
  background: var(--lime);
  box-shadow: 0 0 0 4px rgba(76, 243, 155, 0.14);
}
.page-faq .faq-flow__label {
  display: block;
  font-size: 15px;
  font-weight: 700;
  color: var(--ice);
}
.page-faq .faq-flow__note {
  display: block;
  margin-top: 8px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--mist);
}

/* 结尾 */
.page-faq .faq-outro {
  padding: 0 0 clamp(48px, 7vw, 96px);
}
.page-faq .faq-outro__panel {
  display: grid;
  gap: 16px;
  padding: clamp(26px, 4vw, 48px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  box-shadow: var(--shadow);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(76, 243, 155, 0.13), transparent 58%),
    radial-gradient(80% 120% at 0% 100%, rgba(255, 122, 47, 0.08), transparent 60%),
    var(--panel);
}
.page-faq .faq-outro__panel h2 {
  margin: 0;
  font-size: clamp(24px, 3.2vw, 36px);
  line-height: 1.12;
  letter-spacing: -0.01em;
  font-weight: 900;
}
.page-faq .faq-outro__text {
  margin: 0;
  max-width: 62ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(234, 242, 255, 0.84);
}
.page-faq .faq-outro__acts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 6px;
}

/* 平板及以上 */
@media (min-width: 760px) {
  .page-faq .faq-flow {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 14px;
  }
  .page-faq .faq-flow__note {
    opacity: 0;
    transform: translateY(4px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease);
  }
  .page-faq .faq-flow__node:hover .faq-flow__note,
  .page-faq .faq-flow__node:focus-visible .faq-flow__note,
  .page-faq .faq-flow__node:focus-within .faq-flow__note {
    opacity: 1;
    transform: translateY(0);
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 0.85fr);
    align-items: end;
  }
}

/* 桌面：分类竖轴 + 内容列 */
@media (min-width: 1024px) {
  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    align-items: start;
  }
  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
  }
  .page-faq .faq-rail__list {
    flex-direction: column;
    gap: 4px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-rail__link {
    border-color: transparent;
    border-radius: var(--r-sm);
    background: transparent;
    padding: 12px 14px;
  }
  .page-faq .faq-rail__link:hover {
    background: rgba(27, 42, 68, 0.6);
  }
  .page-faq .faq-rail__link[aria-current] {
    background: rgba(76, 243, 155, 0.14);
    border-color: rgba(76, 243, 155, 0.5);
    color: var(--lime);
  }
  .page-faq .faq-rail__link[aria-current] .num {
    color: var(--lime);
  }
  .page-faq .faq-item[open] {
    margin-right: -22px;
  }
  .page-faq .faq-item summary {
    padding: 18px var(--faq-pad);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-caret,
  .page-faq .faq-caret::after,
  .page-faq .faq-rail__link,
  .page-faq .faq-flow__node,
  .page-faq .faq-flow__note {
    transition: none;
  }
  .page-faq .faq-item__body {
    animation: none;
  }
  .page-faq .faq-flow__note {
    opacity: 1;
    transform: none;
  }
}
</main>