.page-faq {
  --faq-side: 64px;
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-faq__crumb {
  padding-top: clamp(16px, 3vw, 26px);
  padding-bottom: 4px;
}

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

.page-faq .breadcrumbs__sep {
  color: var(--faint);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.6vw, 54px) 0 clamp(34px, 5.4vw, 62px);
  border-bottom: 1px solid var(--line);
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -14%;
  width: min(620px, 78vw);
  height: min(620px, 78vw);
  border-radius: 50%;
  background: radial-gradient(circle, rgba(44, 232, 180, .14), rgba(44, 232, 180, 0) 68%);
  pointer-events: none;
}

.page-faq .faq-hero__grid {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(24px, 4vw, 40px);
  align-items: center;
}

.page-faq .faq-hero__title {
  margin: 10px 0 0;
  font-family: var(--head);
  font-weight: 800;
  font-size: clamp(27px, 4.6vw, 44px);
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-hero__lede {
  margin: 16px 0 0;
  max-width: 46ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px dashed var(--line);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-stat__n {
  font-size: clamp(22px, 3.4vw, 30px);
  font-weight: 800;
  line-height: 1;
  color: var(--teal);
}

.page-faq .faq-stat__l {
  font-size: 13px;
  color: var(--muted);
}

.page-faq .faq-hero__media {
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
  background: var(--panel);
}

.page-faq .faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

/* ---------- 主题筛选 ---------- */

.page-faq .faq-board__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 16px;
}

.page-faq .faq-board__head .h-sec {
  margin: 0;
}

.page-faq .faq-filter {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  padding: 10px;
  margin: 0 0 22px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
}

.page-faq .faq-filter__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
  pointer-events: none;
}

.page-faq .faq-filter__pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 14px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--ink-soft);
  font-size: 13.5px;
  font-weight: 600;
  line-height: 1.2;
  cursor: pointer;
  user-select: none;
  transition: background var(--dur) var(--ease), color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-filter__pill:hover {
  border-color: var(--teal-dim);
  color: var(--ink);
}

.page-faq .faq-filter__n {
  font-size: 11.5px;
  color: var(--faint);
}

.page-faq .faq-filter__radio:checked + .faq-filter__pill {
  background: var(--teal);
  border-color: var(--teal);
  color: #041710;
}

.page-faq .faq-filter__radio:checked + .faq-filter__pill .faq-filter__n {
  color: rgba(4, 23, 16, .66);
}

.page-faq .faq-filter__radio:focus-visible + .faq-filter__pill {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

/* 纯 CSS 主题过滤：不支持 :has 的浏览器展示全部条目 */
.page-faq:has(#faq-f-query:checked) .faq-group:not([data-topic="query"]),
.page-faq:has(#faq-f-sync:checked) .faq-group:not([data-topic="sync"]),
.page-faq:has(#faq-f-rights:checked) .faq-group:not([data-topic="rights"]),
.page-faq:has(#faq-f-device:checked) .faq-group:not([data-topic="device"]),
.page-faq:has(#faq-f-error:checked) .faq-group:not([data-topic="error"]) {
  display: none;
}

/* ---------- 问答分组 ---------- */

.page-faq .faq-group {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  padding: clamp(16px, 2.6vw, 26px);
  margin-bottom: 16px;
}

.page-faq .faq-group__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 4px;
}

.page-faq .faq-group__head .h-sec {
  margin: 0;
}

.page-faq .faq-group__sub {
  margin: 0;
  font-size: 13.5px;
}

.page-faq .faq-group__media {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
  background: var(--bg);
}

.page-faq .faq-group__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.page-faq .faq-group__media .media__cap {
  display: block;
  padding: 10px 14px;
  font-size: 12.5px;
  color: var(--muted);
  border-top: 1px solid var(--line);
}

/* ---------- 单条问答 ---------- */

.page-faq .faq-item {
  display: grid;
  grid-template-columns: var(--faq-side) minmax(0, 1fr);
  gap: 0 14px;
  padding: 16px 0;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-item:last-child {
  border-bottom: 0;
  padding-bottom: 4px;
}

.page-faq .faq-item__side {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-top: 1px;
}

.page-faq .faq-item__no {
  display: block;
  width: 100%;
  padding: 4px 0;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .06em;
  text-align: center;
  color: var(--teal);
  background: rgba(44, 232, 180, .07);
  border: 1px solid rgba(44, 232, 180, .3);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-item__no:hover {
  background: rgba(44, 232, 180, .18);
  border-color: var(--teal);
}

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

.page-faq .faq-item__date {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: .04em;
  line-height: 1.4;
  text-align: center;
  color: var(--amber);
}

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

.page-faq .faq-item__trigger {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  width: 100%;
  padding: 0;
  border: 0;
  background: none;
  color: var(--ink);
  font-family: var(--head);
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.55;
  text-align: left;
  cursor: pointer;
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-item__trigger:hover {
  color: var(--teal-bright);
}

.page-faq .faq-item__trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 4px;
  border-radius: var(--r-sm);
}

.page-faq .faq-item__ico {
  position: relative;
  flex: none;
  width: 20px;
  height: 20px;
  margin-top: 2px;
}

.page-faq .faq-item__ico::before,
.page-faq .faq-item__ico::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--teal);
  transform: translate(-50%, -50%);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .faq-item__ico::before {
  width: 12px;
  height: 2px;
}

.page-faq .faq-item__ico::after {
  width: 2px;
  height: 12px;
}

.page-faq .faq-item__trigger[aria-expanded="true"] .faq-item__ico::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-item__panel {
  padding-top: 10px;
  color: var(--ink-soft);
  font-size: 14.5px;
  line-height: 1.78;
}

.page-faq .faq-item__panel[hidden] {
  display: none;
}

.page-faq .faq-item__panel:not([hidden]) {
  animation: faq-panel-in .18s var(--ease) both;
}

.page-faq .faq-item__panel p {
  margin: 0;
}

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

/* ---------- 提交准备 ---------- */

.page-faq .faq-prep__head {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 20px;
}

.page-faq .faq-prep__head .h-sec {
  margin: 0;
}

.page-faq .faq-prep__list {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-prep__item {
  position: relative;
  padding: 22px 20px 20px;
  background: var(--glass);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  overflow: hidden;
}

.page-faq .faq-prep__item::after {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 3px;
  background: var(--teal-dim);
}

.page-faq .faq-prep__item:nth-child(2)::after {
  background: var(--teal);
}

.page-faq .faq-prep__item:nth-child(3)::after {
  background: var(--amber);
}

.page-faq .faq-prep__n {
  display: block;
  margin-bottom: 12px;
  font-size: clamp(26px, 4vw, 34px);
  font-weight: 800;
  line-height: 1;
  color: var(--faint);
}

.page-faq .faq-prep__t {
  margin: 0 0 8px;
  font-family: var(--head);
  font-size: 17px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-prep__item p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

/* ---------- 人工渠道 ---------- */

.page-faq .faq-human__head {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 22px;
}

.page-faq .faq-human__head .h-sec {
  margin: 0;
}

.page-faq .faq-human__head p {
  margin: 0;
  max-width: 68ch;
  font-size: 14.5px;
  line-height: 1.8;
}

.page-faq .faq-ways {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.page-faq .faq-way {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 22px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
}

.page-faq .faq-way--ticket {
  border-left: 3px solid var(--teal);
}

.page-faq .faq-way--mail {
  border-left: 3px solid var(--amber);
}

.page-faq .faq-way__t {
  margin: 2px 0 0;
  font-family: var(--head);
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  color: var(--ink);
}

.page-faq .faq-way__d {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--ink-soft);
}

.page-faq .faq-way__label {
  margin: 4px 0 0;
  font-size: 11.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--faint);
}

.page-faq .faq-way__list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

.page-faq .faq-way__list li {
  position: relative;
  padding-left: 16px;
}

.page-faq .faq-way__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .68em;
  width: 7px;
  height: 1px;
  background: var(--teal);
}

.page-faq .faq-way__addr-row {
  margin: 0;
}

.page-faq .faq-way__addr {
  display: inline-block;
  max-width: 100%;
  padding: 6px 10px;
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: .02em;
  color: var(--teal);
  background: rgba(44, 232, 180, .08);
  border: 1px dashed rgba(44, 232, 180, .36);
  border-radius: var(--r-sm);
  cursor: pointer;
  word-break: break-all;
  transition: background var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .faq-way__addr:hover {
  background: rgba(44, 232, 180, .16);
  border-color: var(--teal);
}

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

/* ---------- 延伸入口 ---------- */

.page-faq .faq-next .h-sec {
  margin: 0 0 18px;
}

.page-faq .faq-next__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-next__card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 18px;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  text-decoration: none;
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background var(--dur) var(--ease);
}

.page-faq .faq-next__card:hover {
  transform: translateY(-4px);
  border-color: var(--teal);
  background: var(--glass);
}

.page-faq .faq-next__card:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 3px;
}

.page-faq .faq-next__tag {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--amber);
}

.page-faq .faq-next__t {
  font-family: var(--head);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-faq .faq-next__d {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 响应式 ---------- */

@media (min-width: 700px) {
  .page-faq {
    --faq-side: 84px;
  }

  .page-faq .faq-prep__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-next__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 38fr 62fr;
    gap: clamp(32px, 4vw, 56px);
  }

  .page-faq .faq-ways {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-item__trigger {
    font-size: 16px;
  }

  .page-faq .faq-item__panel {
    max-width: 72ch;
  }
}

@media (min-width: 1080px) {
  .page-faq .faq-next__grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: .01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .01ms !important;
  }

  .page-faq .faq-item__panel:not([hidden]) {
    animation: none;
  }
}