.page-faq {
  --faq-rule: rgba(31, 58, 95, .75);
  --faq-soft: rgba(0, 229, 255, .08);
  --faq-line-x: 17px;
  padding-bottom: 120px;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin: 26px 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 30px 0 40px;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__lead .eyebrow {
  margin-bottom: 14px;
}

.page-faq .faq-hero__lead .display-1 {
  margin: 0 0 18px;
  max-width: 15ch;
}

.page-faq .faq-hero__lead .lead {
  max-width: 46ch;
  color: var(--ab-body);
}

.page-faq .faq-hero__quick {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 26px;
}

.page-faq .faq-quick-card {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  border: 1px solid var(--faq-rule);
  border-radius: var(--ab-radius);
  background: var(--ab-deep);
  color: var(--ab-ink);
  text-decoration: none;
  transition: border-color var(--ab-t), background var(--ab-t), transform var(--ab-t);
}

.page-faq .faq-quick-card:hover,
.page-faq .faq-quick-card:focus-visible {
  border-color: var(--ab-cyan);
  background: var(--ab-raise);
  transform: translateY(-2px);
}

.page-faq .faq-quick-card__num {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  color: var(--ab-cyan);
  letter-spacing: .06em;
}

.page-faq .faq-quick-card__label {
  font-size: 16px;
  font-weight: 700;
}

/* 首屏状态板 */
.page-faq .faq-hero__board {
  padding: 22px 22px 20px;
  position: relative;
  overflow: hidden;
}

.page-faq .faq-hero__board::after {
  content: "";
  position: absolute;
  inset: auto -30% -60% auto;
  width: 240px;
  height: 240px;
  background: radial-gradient(circle, rgba(0, 229, 255, .18), transparent 68%);
  pointer-events: none;
}

.page-faq .faq-hero__board-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.page-faq .faq-hero__board-head .mono {
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--ab-cyan);
}

.page-faq .faq-hero__board-title {
  margin: 0 0 18px;
  font-size: 18px;
  font-weight: 700;
  color: var(--ab-ink);
  line-height: 1.5;
}

.page-faq .faq-status-list {
  list-style: none;
  margin: 0 0 14px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-status-list__row {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: center;
  gap: 10px;
  padding: 7px 0;
  border-bottom: 1px dashed var(--faq-rule);
  font-size: 15px;
  color: var(--ab-body);
}

.page-faq .faq-status-list__row:last-child {
  border-bottom: 0;
}

.page-faq .faq-status-list__val {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  color: var(--ab-green);
  min-width: 3.4em;
  text-align: right;
}

.page-faq .faq-hero__board-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ab-muted);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 40px;
}

.page-faq .faq-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--faq-rule);
}

.page-faq .faq-toolbar .filter-bar {
  flex-wrap: wrap;
  gap: 8px;
}

.page-faq .faq-toolbar .filter-status {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  color: var(--ab-muted);
  white-space: nowrap;
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-item {
  border-bottom: 1px solid var(--faq-rule);
  position: relative;
}

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

.page-faq .qa-item > summary {
  list-style: none;
  cursor: pointer;
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: start;
  gap: 14px;
  padding: 24px 0;
}

.page-faq .qa-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa-item > summary:focus-visible {
  outline: 2px solid var(--ab-cyan);
  outline-offset: 4px;
}

.page-faq .qa-item__num {
  font-family: var(--ab-font-mono);
  font-size: 13px;
  letter-spacing: .08em;
  color: var(--ab-muted);
  padding-top: 6px;
  transition: color var(--ab-t);
}

.page-faq .qa-item__title {
  font-size: 20px;
  font-weight: 800;
  line-height: 1.45;
  letter-spacing: -.01em;
  color: var(--ab-ink);
}

.page-faq .qa-item__mark {
  width: 22px;
  height: 22px;
  margin-top: 4px;
  position: relative;
  flex: none;
}

.page-faq .qa-item__mark::before,
.page-faq .qa-item__mark::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  background: var(--ab-cyan);
  transition: transform var(--ab-t), opacity var(--ab-t);
}

.page-faq .qa-item__mark::before {
  width: 14px;
  height: 2px;
  transform: translate(-50%, -50%);
}

.page-faq .qa-item__mark::after {
  width: 2px;
  height: 14px;
  transform: translate(-50%, -50%);
}

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

.page-faq .qa-item[open] .qa-item__num {
  color: var(--ab-cyan);
}

.page-faq .qa-item[open] .qa-item__title {
  color: var(--ab-cyan);
}

.page-faq .qa-item__body {
  padding: 0 0 32px;
  display: grid;
  gap: 22px;
  animation: faq-rise .22s ease-out both;
}

@keyframes faq-rise {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: none; }
}

.page-faq .qa-item__answer {
  margin: 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.75;
  color: var(--ab-body);
}

/* ---------- 步骤列表 ---------- */
.page-faq .step-list {
  list-style: none;
  margin: 0;
  padding: 0;
  counter-reset: none;
}

.page-faq .step-item {
  position: relative;
  padding: 0 0 26px 52px;
}

.page-faq .step-item::before {
  content: "";
  position: absolute;
  left: calc(var(--faq-line-x) - 1px);
  top: 40px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(var(--ab-line), rgba(31, 58, 95, 0));
}

.page-faq .step-item:last-child::before {
  display: none;
}

.page-faq .step-item:last-child {
  padding-bottom: 0;
}

.page-faq .step-num {
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  font-family: var(--ab-font-mono);
  font-size: 13px;
  color: var(--ab-cyan);
  background: var(--ab-void);
  border: 1px solid var(--ab-cyan);
  clip-path: polygon(0 0, 100% 0, 100% 70%, 70% 100%, 0 100%);
}

.page-faq .step-title {
  margin: 6px 0 6px;
  font-size: 18px;
  font-weight: 800;
  line-height: 1.45;
  color: var(--ab-ink);
}

.page-faq .step-text {
  margin: 0 0 8px;
  max-width: 58ch;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ab-body);
}

.page-faq .step-flag {
  margin: 0;
  padding-left: 12px;
  border-left: 2px solid var(--ab-green);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ab-green);
}

/* ---------- 图 ---------- */
.page-faq .media-frame {
  margin: 4px 0 0;
}

.page-faq .media-frame__media {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border: 1px solid var(--faq-rule);
  border-radius: var(--ab-radius);
  background: var(--ab-deep);
}

.page-faq .media-frame__caption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--ab-muted);
}

/* ---------- 播放说明小网格 ---------- */
.page-faq .faq-note-grid {
  display: grid;
  gap: 14px;
}

.page-faq .faq-note {
  padding: 18px;
  background: var(--ab-deep);
  border-left: 3px solid var(--ab-orange);
  border-radius: 0 var(--ab-radius) var(--ab-radius) 0;
}

.page-faq .faq-note .heading-3 {
  margin: 0 0 8px;
  font-size: 17px;
  color: var(--ab-ink);
}

.page-faq .faq-note p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ab-body);
}

/* ---------- 资料清单 ---------- */
.page-faq .faq-doc-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-doc {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  align-items: start;
  padding: 16px 18px;
  background: var(--ab-raise);
  border-radius: var(--ab-radius);
  border-left: 3px solid var(--ab-cyan);
}

.page-faq .faq-doc__tag {
  margin-top: 3px;
  white-space: nowrap;
}

.page-faq .faq-doc .heading-3 {
  margin: 0 0 6px;
  font-size: 17px;
  color: var(--ab-ink);
}

.page-faq .faq-doc p {
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ab-body);
}

/* ---------- 反馈前清单 ---------- */
.page-faq .faq-check-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-check-list li {
  position: relative;
  padding-left: 26px;
  font-size: 15px;
  line-height: 1.7;
  color: var(--ab-body);
}

.page-faq .faq-check-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .62em;
  width: 12px;
  height: 2px;
  background: var(--ab-orange);
}

/* ---------- 右侧速查栏 ---------- */
.page-faq .faq-rail {
  display: grid;
  gap: 16px;
  align-content: start;
}

.page-faq .faq-rail__panel {
  padding: 20px;
}

.page-faq .faq-rail__title {
  margin: 8px 0 10px;
  font-size: 20px;
  line-height: 1.4;
  color: var(--ab-ink);
}

.page-faq .faq-rail__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.7;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .faq-rail__list li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 12px;
  align-items: baseline;
  padding-bottom: 8px;
  border-bottom: 1px dashed var(--faq-rule);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ab-body);
}

.page-faq .faq-rail__list li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-rail__list .mono {
  color: var(--ab-cyan);
  font-size: 12px;
  letter-spacing: .06em;
}

.page-faq .faq-rail__panel .btn {
  margin-top: 14px;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-closing {
  padding: 20px 0 0;
}

.page-faq .faq-closing__inner {
  display: grid;
  gap: 24px;
  padding: 32px 24px;
  background:
    linear-gradient(115deg, rgba(0, 229, 255, .14), transparent 46%),
    linear-gradient(300deg, rgba(255, 122, 26, .16), transparent 52%),
    var(--ab-deep);
  border: 1px solid var(--faq-rule);
}

.page-faq .faq-closing__text .eyebrow {
  margin-bottom: 10px;
}

.page-faq .faq-closing__text .section-title {
  margin: 0 0 12px;
  max-width: 26ch;
}

.page-faq .faq-closing__text .lead {
  max-width: 62ch;
  margin: 0;
  color: var(--ab-body);
  font-size: 16px;
}

.page-faq .faq-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-self: end;
}

/* ---------- 固定反馈面板 ---------- */
.page-faq .faq-fab {
  position: fixed;
  right: 14px;
  bottom: 14px;
  z-index: 40;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding: 11px 16px;
  text-decoration: none;
  background: var(--ab-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--ab-orange);
  border-radius: 10px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, .45);
  transition: transform var(--ab-t), border-color var(--ab-t);
}

.page-faq .faq-fab:hover,
.page-faq .faq-fab:focus-visible {
  transform: translateY(-3px);
  border-color: var(--ab-cyan);
}

.page-faq .faq-fab__label {
  font-size: 12px;
  color: var(--ab-muted);
  line-height: 1.2;
}

.page-faq .faq-fab__cta {
  font-size: 15px;
  font-weight: 800;
  color: var(--ab-orange);
  line-height: 1.3;
}

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

  .page-faq .faq-note-grid {
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  }

  .page-faq .faq-closing__inner {
    padding: 44px 40px;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: end;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero {
    padding: 46px 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: start;
    gap: 56px;
  }

  .page-faq .faq-layout {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    gap: 64px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 132px;
  }

  .page-faq .qa-item__title {
    font-size: 24px;
  }

  .page-faq .faq-fab {
    right: 28px;
    bottom: 28px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-hero__grid {
    gap: 72px;
  }

  .page-faq .faq-layout {
    gap: 80px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa-item__body {
    animation: none;
  }

  .page-faq .faq-quick-card,
  .page-faq .faq-fab {
    transition: none;
  }

  .page-faq .faq-quick-card:hover,
  .page-faq .faq-fab:hover {
    transform: none;
  }
}