.page-faq {
  --faq-cut: 14px;
  --faq-gutter: 24px;
  background: var(--midnight-950);
  color: var(--mist-200);
  font-family: var(--font-body);
  line-height: 1.65;
}

.page-faq .container {
  position: relative;
  z-index: 1;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding-top: var(--sp-5);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: var(--sp-8) 0 var(--sp-7);
  border-bottom: 1px solid var(--steel-600);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    radial-gradient(ellipse 68% 92% at 90% 0%, rgba(182, 255, 60, 0.08), transparent 62%),
    radial-gradient(ellipse 50% 70% at 4% 100%, rgba(42, 53, 80, 0.55), transparent 70%),
    repeating-linear-gradient(0deg, rgba(201, 211, 230, 0.018) 0 1px, transparent 1px 4px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
}

.page-faq .faq-hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  margin: 0 0 var(--sp-5);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--slate-400);
}

.page-faq .faq-hero__eyebrow::before {
  content: "";
  width: 30px;
  height: 2px;
  background: var(--volt-500);
}

.page-faq .faq-hero__title {
  margin: 0 0 var(--sp-5);
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 6.4vw, 70px);
  line-height: 1.04;
  letter-spacing: -0.028em;
  color: var(--ice-050);
}

.page-faq .faq-hero__title em {
  font-style: normal;
  color: var(--volt-500);
  position: relative;
}

.page-faq .faq-hero__title em::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0.06em;
  height: 3px;
  background: linear-gradient(90deg, var(--volt-500), transparent);
  opacity: 0.6;
}

.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 58ch;
  font-size: 15px;
  color: var(--mist-200);
}

/* 索引卡 */
.page-faq .faq-index {
  align-self: end;
  border: 1px solid var(--steel-600);
  background: var(--deep-900);
  padding: var(--sp-5);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

.page-faq .faq-index__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding-bottom: var(--sp-4);
  margin-bottom: var(--sp-2);
  border-bottom: 1px dashed var(--steel-600);
}

.page-faq .faq-index__stamp {
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--volt-500);
}

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

.page-faq .faq-index__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-3) 0;
  border-bottom: 1px solid rgba(42, 53, 80, 0.6);
}

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

.page-faq .faq-index__row dt {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--slate-400);
  white-space: nowrap;
}

.page-faq .faq-index__row dd {
  margin: 0;
  font-size: 13px;
  color: var(--mist-200);
  text-align: right;
}

.page-faq .faq-index__num {
  font-size: 20px;
  font-weight: 700;
  color: var(--ice-050);
  line-height: 1;
}

/* ---------- 分类切换 ---------- */
.page-faq .faq-switch {
  position: relative;
  padding: var(--sp-7) 0 var(--sp-9);
}

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

.page-faq .faq-tabs {
  display: flex;
  align-items: stretch;
  gap: var(--sp-1);
  max-width: var(--shell-max);
  margin: 0 auto var(--sp-7);
  padding: 0 var(--sp-5);
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--steel-600);
}

.page-faq .faq-tabs::-webkit-scrollbar {
  display: none;
}

.page-faq .faq-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  flex: 0 0 auto;
  min-height: 46px;
  padding: var(--sp-3) var(--sp-4) var(--sp-4);
  margin-bottom: -1px;
  font-size: 14px;
  color: var(--slate-400);
  white-space: nowrap;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: color 180ms var(--ease), border-color 180ms var(--ease);
}

.page-faq .faq-tab:hover {
  color: var(--mist-200);
}

.page-faq .faq-tab__no {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate-400);
  transition: color 180ms var(--ease);
}

.page-faq .faq-tab__n {
  display: inline-block;
  min-width: 20px;
  padding: 1px 5px;
  border-radius: 2px;
  background: rgba(42, 53, 80, 0.65);
  font-size: 10px;
  line-height: 1.5;
  text-align: center;
  color: var(--slate-400);
}

.page-faq .faq-radio:focus-visible + .faq-radio + .faq-radio + .faq-radio + .faq-radio + .faq-radio + .faq-tabs .faq-tab,
.page-faq .faq-radio:focus-visible ~ .faq-tabs .faq-tab {
  outline: none;
}

.page-faq .faq-radio:focus-visible ~ .faq-tabs {
  outline: 2px solid var(--volt-500);
  outline-offset: 4px;
}

.page-faq #faq-cat-1:checked ~ .faq-tabs .faq-tab:nth-of-type(1),
.page-faq #faq-cat-2:checked ~ .faq-tabs .faq-tab:nth-of-type(2),
.page-faq #faq-cat-3:checked ~ .faq-tabs .faq-tab:nth-of-type(3),
.page-faq #faq-cat-4:checked ~ .faq-tabs .faq-tab:nth-of-type(4),
.page-faq #faq-cat-5:checked ~ .faq-tabs .faq-tab:nth-of-type(5),
.page-faq #faq-cat-6:checked ~ .faq-tabs .faq-tab:nth-of-type(6) {
  color: var(--ice-050);
  border-bottom-color: var(--volt-500);
}

.page-faq #faq-cat-1:checked ~ .faq-tabs .faq-tab:nth-of-type(1) .faq-tab__no,
.page-faq #faq-cat-2:checked ~ .faq-tabs .faq-tab:nth-of-type(2) .faq-tab__no,
.page-faq #faq-cat-3:checked ~ .faq-tabs .faq-tab:nth-of-type(3) .faq-tab__no,
.page-faq #faq-cat-4:checked ~ .faq-tabs .faq-tab:nth-of-type(4) .faq-tab__no,
.page-faq #faq-cat-5:checked ~ .faq-tabs .faq-tab:nth-of-type(5) .faq-tab__no,
.page-faq #faq-cat-6:checked ~ .faq-tabs .faq-tab:nth-of-type(6) .faq-tab__no {
  color: var(--volt-500);
}

.page-faq #faq-cat-1:checked ~ .faq-tabs .faq-tab:nth-of-type(1) .faq-tab__n,
.page-faq #faq-cat-2:checked ~ .faq-tabs .faq-tab:nth-of-type(2) .faq-tab__n,
.page-faq #faq-cat-3:checked ~ .faq-tabs .faq-tab:nth-of-type(3) .faq-tab__n,
.page-faq #faq-cat-4:checked ~ .faq-tabs .faq-tab:nth-of-type(4) .faq-tab__n,
.page-faq #faq-cat-5:checked ~ .faq-tabs .faq-tab:nth-of-type(5) .faq-tab__n,
.page-faq #faq-cat-6:checked ~ .faq-tabs .faq-tab:nth-of-type(6) .faq-tab__n {
  background: var(--volt-500);
  color: var(--midnight-950);
}

/* ---------- 面板 ---------- */
.page-faq .faq-panels {
  max-width: var(--shell-max);
  margin: 0 auto;
  padding: 0 var(--sp-5);
}

.page-faq .faq-panel {
  display: none;
}

.page-faq #faq-cat-1:checked ~ .faq-panels .faq-panel:nth-of-type(1),
.page-faq #faq-cat-2:checked ~ .faq-panels .faq-panel:nth-of-type(2),
.page-faq #faq-cat-3:checked ~ .faq-panels .faq-panel:nth-of-type(3),
.page-faq #faq-cat-4:checked ~ .faq-panels .faq-panel:nth-of-type(4),
.page-faq #faq-cat-5:checked ~ .faq-panels .faq-panel:nth-of-type(5),
.page-faq #faq-cat-6:checked ~ .faq-panels .faq-panel:nth-of-type(6) {
  display: block;
  animation: faqPanelIn 260ms var(--ease) both;
}

@keyframes faqPanelIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-panel__head {
  padding-bottom: var(--sp-5);
  margin-bottom: var(--sp-6);
  border-bottom: 1px solid var(--steel-600);
}

.page-faq .faq-panel__idx {
  margin: 0 0 var(--sp-3);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--volt-500);
}

.page-faq .faq-panel__title {
  margin: 0 0 var(--sp-3);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 33px);
  line-height: 1.22;
  letter-spacing: -0.022em;
  color: var(--ice-050);
}

.page-faq .faq-panel__desc {
  margin: 0;
  max-width: 64ch;
  font-size: 14.5px;
  color: var(--mist-200);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 0 0 var(--sp-7);
  border: 1px solid var(--steel-600);
  background: var(--deep-900);
  overflow: hidden;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--faq-cut)), calc(100% - var(--faq-cut)) 100%, 0 100%);
}

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

.page-faq .faq-figure__cap {
  padding: var(--sp-3) var(--sp-4) var(--sp-4);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--slate-400);
  border-top: 1px solid rgba(42, 53, 80, 0.7);
}

/* ---------- 问答列表 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--steel-600);
}

.page-faq .faq-q {
  border-bottom: 1px solid var(--steel-600);
  padding: var(--sp-4) 0;
  transition: background-color 200ms var(--ease);
}

.page-faq .faq-q[open] {
  background: linear-gradient(90deg, rgba(182, 255, 60, 0.045), transparent 62%);
}

.page-faq .faq-q > summary {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  min-height: 44px;
  padding: var(--sp-2) 0;
  list-style: none;
  cursor: pointer;
  color: var(--ice-050);
  font-size: 15px;
  font-weight: 600;
  line-height: 1.5;
  transition: color 180ms var(--ease);
}

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

.page-faq .faq-q > summary::marker {
  content: "";
}

.page-faq .faq-q > summary:hover {
  color: var(--volt-500);
}

.page-faq .faq-q > summary:focus-visible {
  outline: 2px solid var(--volt-500);
  outline-offset: 3px;
}

.page-faq .faq-q__no {
  flex: 0 0 auto;
  padding-top: 3px;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--slate-400);
}

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

.page-faq .faq-q__arrow {
  flex: 0 0 auto;
  width: 9px;
  height: 9px;
  margin-top: 8px;
  border-right: 2px solid var(--slate-400);
  border-bottom: 2px solid var(--slate-400);
  transform: rotate(45deg);
  transition: transform 200ms var(--ease), border-color 200ms var(--ease);
}

.page-faq .faq-q[open] > summary .faq-q__arrow {
  transform: rotate(-135deg);
  border-color: var(--volt-500);
}

.page-faq .faq-q__body {
  padding: var(--sp-3) 0 var(--sp-4) calc(var(--sp-3) + 46px);
  font-size: 14px;
  color: var(--mist-200);
}

.page-faq .faq-q__body p {
  margin: 0 0 var(--sp-3);
  max-width: 62ch;
}

.page-faq .faq-q__body p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-q__more {
  font-size: 13px;
}

.page-faq .faq-q__more a {
  color: var(--volt-500);
  text-decoration: none;
  border-bottom: 1px solid rgba(182, 255, 60, 0.35);
  padding-bottom: 1px;
  transition: border-color 160ms var(--ease);
}

.page-faq .faq-q__more a:hover,
.page-faq .faq-q__more a:focus-visible {
  border-bottom-color: var(--volt-500);
  outline: none;
}

.page-faq .faq-q__more a:focus-visible {
  outline: 2px solid var(--volt-500);
  outline-offset: 3px;
}

/* ---------- 平板起：双栏 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.6fr) minmax(250px, 1fr);
    gap: var(--sp-7);
    align-items: end;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-q {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.45fr);
    column-gap: var(--sp-7);
    align-items: start;
    padding: var(--sp-5) 0;
  }

  .page-faq .faq-q > summary {
    grid-column: 1;
    grid-row: 1;
    padding: 0;
  }

  .page-faq .faq-q > .faq-q__body {
    grid-column: 2;
    grid-row: 1;
    padding: 0 0 0 var(--sp-6);
    border-left: 1px solid var(--steel-600);
  }

  .page-faq .faq-q .faq-q__no {
    padding-top: 4px;
  }

  .page-faq .faq-q .faq-q__arrow {
    margin-top: 9px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-hero {
    padding: var(--sp-9) 0 var(--sp-8);
  }

  .page-faq .faq-index {
    padding: var(--sp-6);
  }

  .page-faq .faq-tab {
    padding-left: var(--sp-5);
    padding-right: var(--sp-5);
  }
}

/* ---------- 降低动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq *,
  .page-faq *::before,
  .page-faq *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}