.page-faq {
  --faq-line: rgba(108, 124, 140, 0.28);
  --faq-line-strong: rgba(34, 240, 224, 0.36);
  --faq-panel: linear-gradient(155deg, rgba(16, 38, 58, 0.92), rgba(11, 27, 43, 0.78));
  --faq-gap: 20px;
  background:
    radial-gradient(1100px 560px at 10% -8%, rgba(34, 240, 224, 0.11), transparent 62%),
    radial-gradient(880px 480px at 90% 3%, rgba(255, 107, 44, 0.09), transparent 64%),
    var(--ink-900);
  color: var(--paper);
  padding-bottom: clamp(56px, 8vw, 96px);
  overflow-x: clip;
}

.page-faq .frame-width {
  padding-inline: clamp(16px, 4vw, 40px);
}

/* 面包屑 */
.page-faq .breadcrumbs {
  padding-top: clamp(18px, 3vw, 30px);
}

.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--steel-2);
}

.page-faq .crumb-link {
  color: var(--steel-2);
  text-decoration: none;
  transition: color var(--ease);
}

.page-faq .crumb-link:hover,
.page-faq .crumb-link:focus-visible {
  color: var(--cyan);
}

.page-faq .crumb-sep {
  color: var(--steel);
}

.page-faq .crumb-current {
  color: var(--cyan);
  font-family: var(--font-num);
  letter-spacing: 0.06em;
}

/* 首屏 */
.page-faq .faq-hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding: clamp(24px, 4vw, 40px) 0 clamp(30px, 5vw, 52px);
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .eyebrow {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(28px, 5.6vw, 50px);
  line-height: 1.1;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-faq .lede {
  margin: 0;
  max-width: 62ch;
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: var(--steel-2);
}

.page-faq .faq-hero-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin-top: clamp(22px, 3vw, 32px);
}

.page-faq .faq-stat {
  min-width: 0;
  padding: 14px 16px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-md);
  background: linear-gradient(160deg, rgba(16, 38, 58, 0.9), rgba(8, 19, 31, 0.88));
}

.page-faq .faq-stat b {
  display: block;
  font-family: var(--font-num);
  font-size: clamp(20px, 3.4vw, 28px);
  letter-spacing: 0.05em;
  color: var(--cyan);
  line-height: 1.15;
}

.page-faq .faq-stat span {
  display: block;
  margin-top: 6px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

.page-faq .faq-hero-media {
  margin: 0;
  min-width: 0;
}

.page-faq .media-frame {
  border-radius: var(--radius-lg);
  overflow: hidden;
}

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

.page-faq .media-caption {
  margin-top: 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--steel);
}

/* 筛选工具条 */
.page-faq .faq-toolbar {
  border-top: 1px solid var(--faq-line);
  border-bottom: 1px solid var(--faq-line);
  background: rgba(11, 27, 43, 0.74);
}

.page-faq .faq-toolbar-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 24px;
  padding-block: 14px;
}

.page-faq .filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
}

.page-faq .filter-count {
  margin: 0;
  font-family: var(--font-num);
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--steel-2);
  white-space: nowrap;
}

.page-faq .filter-empty {
  margin: 20px 0 0;
  padding: 16px 18px;
  border: 1px dashed rgba(255, 200, 87, 0.45);
  border-radius: var(--radius-md);
  background: rgba(255, 200, 87, 0.08);
  color: var(--amber);
  font-size: 14px;
  line-height: 1.7;
}

/* 主体：左侧分类 + 右侧问答 */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: 28px;
  padding-top: clamp(28px, 4vw, 44px);
}

.page-faq .faq-aside {
  min-width: 0;
}

.page-faq .faq-aside-panel {
  padding: 18px;
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(16, 38, 58, 0.86), rgba(8, 19, 31, 0.92));
}

.page-faq .faq-aside-title {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--steel);
}

.page-faq .faq-anchor-list {
  display: grid;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-anchor {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: var(--pill);
  color: var(--paper);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background var(--ease), border-color var(--ease), color var(--ease);
}

.page-faq .faq-anchor:hover,
.page-faq .faq-anchor:focus-visible {
  background: rgba(34, 240, 224, 0.1);
  border-color: var(--faq-line-strong);
  color: var(--cyan);
  outline: none;
}

.page-faq .faq-anchor-idx {
  font-family: var(--font-num);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--steel);
}

.page-faq .faq-anchor-label {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .faq-anchor-count {
  font-family: var(--font-num);
  font-size: 12px;
  color: var(--cyan);
}

.page-faq .faq-aside-note {
  margin: 14px 0 0;
  padding-top: 14px;
  border-top: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-aside-note a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-panels {
  display: grid;
  gap: clamp(32px, 4vw, 48px);
  min-width: 0;
}

.page-faq .faq-group {
  min-width: 0;
  scroll-margin-top: 96px;
}

.page-faq .faq-group:not(:has(.faq-item:not([hidden]))) {
  display: none;
}

.page-faq .faq-group-head {
  display: grid;
  gap: 8px;
  margin-bottom: 18px;
}

.page-faq .faq-group-kicker {
  margin: 0;
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-group-note {
  margin: 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--steel);
}

/* 问答卡片 */
.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: var(--faq-panel);
  overflow: hidden;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--faq-line-strong);
}

.page-faq .faq-item[open] {
  border-color: rgba(34, 240, 224, 0.55);
  box-shadow: 0 20px 44px -32px rgba(34, 240, 224, 0.75);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 15px 18px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.5;
  color: var(--paper);
}

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

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
  border-radius: var(--radius-lg);
}

.page-faq .faq-num {
  font-family: var(--font-num);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .faq-item[open] .faq-num {
  color: var(--orange);
}

.page-faq .faq-q-text {
  min-width: 0;
}

.page-faq .faq-icon {
  position: relative;
  flex: none;
  width: 26px;
  height: 26px;
  border: 1px solid var(--faq-line);
  border-radius: 50%;
  transition: background var(--ease), border-color var(--ease);
}

.page-faq .faq-icon::before,
.page-faq .faq-icon::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  border-radius: 2px;
  background: var(--cyan);
  transform: translate(-50%, -50%);
  transition: transform var(--ease), opacity var(--ease), background var(--ease);
}

.page-faq .faq-icon::before {
  width: 11px;
  height: 2px;
}

.page-faq .faq-icon::after {
  width: 2px;
  height: 11px;
}

.page-faq .faq-item[open] .faq-icon {
  background: rgba(255, 107, 44, 0.18);
  border-color: rgba(255, 107, 44, 0.55);
}

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

.page-faq .faq-item[open] .faq-icon::after {
  opacity: 0;
  transform: translate(-50%, -50%) scaleY(0);
}

.page-faq .faq-a {
  display: grid;
  gap: 10px;
  padding: 0 18px 18px;
}

.page-faq .faq-item[open] .faq-a {
  animation: faq-panel-in 200ms ease both;
}

@keyframes faq-panel-in {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-a p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel-2);
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 联系条 */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: 1fr;
  gap: 24px;
  padding: clamp(20px, 3.6vw, 36px);
  border: 1px solid var(--faq-line);
  border-radius: var(--radius-lg);
  background: linear-gradient(135deg, rgba(255, 107, 44, 0.12), rgba(16, 38, 58, 0.9) 46%, rgba(8, 19, 31, 0.96));
}

.page-faq .faq-contact-media {
  min-width: 0;
  max-width: 320px;
}

.page-faq .faq-contact-body {
  min-width: 0;
}

.page-faq .faq-contact-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.22;
  color: var(--paper);
}

.page-faq .faq-contact-text {
  margin: 0;
  max-width: 56ch;
  font-size: 15px;
  line-height: 1.76;
  color: var(--steel-2);
}

.page-faq .faq-copy-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}

.page-faq .copy-status {
  margin: 8px 0 0;
  min-height: 18px;
  font-size: 13px;
  line-height: 1.5;
  color: var(--green);
}

.page-faq .faq-contact-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-footnote {
  margin: 0;
  padding: 18px 20px;
  border: 1px dashed var(--faq-line);
  border-radius: var(--radius-lg);
  background: rgba(11, 27, 43, 0.62);
  font-size: 14px;
  line-height: 1.76;
  color: var(--steel-2);
}

.page-faq .faq-footnote a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* 响应式 */
@media (min-width: 640px) {
  .page-faq .faq-hero-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 720px) {
  .page-faq .faq-a {
    padding-left: calc(18px + 42px);
  }
}

@media (min-width: 820px) {
  .page-faq .faq-contact {
    grid-template-columns: 260px minmax(0, 1fr);
    gap: 36px;
    align-items: center;
  }

  .page-faq .faq-contact-media {
    max-width: none;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.18fr) minmax(0, 0.82fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: center;
    padding-top: clamp(36px, 5vw, 60px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-body {
    grid-template-columns: 258px minmax(0, 1fr);
    gap: clamp(32px, 4vw, 56px);
    align-items: start;
  }

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

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item[open] .faq-a {
    animation: none;
  }

  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    transition-duration: 0.01ms !important;
  }
}