.page-faq {
  position: relative;
  isolation: isolate;
  display: block;
  color: var(--ink);
  font-family: var(--f-sans);
  padding-bottom: clamp(56px, 9vw, 120px);
  overflow-x: clip;
}

/* ---------- 首屏：检索框景 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(92px, 12.5vw, 152px);
  padding-bottom: clamp(18px, 3vw, 34px);
}

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .12em;
  color: var(--ink-dim);
  margin-bottom: clamp(16px, 2.4vw, 26px);
}

.page-faq .breadcrumb a {
  color: var(--ink-dim);
  text-decoration: none;
  transition: color .18s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--laser);
}

.page-faq .breadcrumb span[aria-hidden] {
  opacity: .5;
}

.page-faq .faq-frame {
  position: relative;
  padding: clamp(28px, 4.2vw, 60px) clamp(20px, 3.6vw, 56px) clamp(24px, 3.6vw, 48px);
  background: linear-gradient(158deg, #0E1732 0%, #0B1226 42%, #05070F 100%);
  border: 1px solid var(--rule);
  clip-path: polygon(
    0 28px, 28px 0,
    calc(100% - 28px) 0, 100% 28px,
    100% calc(100% - 28px), calc(100% - 28px) 100%,
    28px 100%, 0 calc(100% - 28px)
  );
  overflow: hidden;
}

.page-faq .faq-frame::before {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  right: 28px;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--laser) 20%, var(--neon) 54%, var(--gold) 82%, transparent);
  opacity: .85;
  z-index: 3;
}

.page-faq .faq-frame::after {
  content: "";
  position: absolute;
  top: 0;
  left: 28px;
  width: 104px;
  height: 9px;
  background-image: repeating-linear-gradient(90deg, var(--rule) 0 1px, transparent 1px 9px);
  z-index: 3;
}

.page-faq .faq-glow {
  position: absolute;
  top: -6%;
  left: 50%;
  transform: translateX(-50%);
  width: 118%;
  max-width: none;
  height: 118%;
  object-fit: cover;
  opacity: .4;
  z-index: 0;
  pointer-events: none;
  mix-blend-mode: screen;
  mask-image: radial-gradient(56% 62% at 50% 42%, #000 0%, rgba(0, 0, 0, .32) 58%, transparent 84%);
  -webkit-mask-image: radial-gradient(56% 62% at 50% 42%, #000 0%, rgba(0, 0, 0, .32) 58%, transparent 84%);
}

.page-faq .faq-frame-body {
  position: relative;
  z-index: 2;
}

.page-faq .faq-frame .eyebrow {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--laser);
}

.page-faq .faq-frame h1 {
  margin: 16px 0 0;
  max-width: 22ch;
  font-size: clamp(26px, 4.6vw, 52px);
  font-weight: 300;
  line-height: 1.14;
  letter-spacing: -.015em;
  color: var(--ink);
  text-shadow: 0 0 44px rgba(122, 77, 255, .42);
}

.page-faq .faq-frame .lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 66ch;
  font-size: clamp(15px, 1.4vw, 16.5px);
  line-height: 1.85;
  color: var(--ink-dim);
}

.page-faq .faq-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px 18px;
  margin-top: clamp(24px, 3.6vw, 40px);
  padding-top: clamp(18px, 2.6vw, 28px);
  border-top: 1px solid var(--rule);
}

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

.page-faq .faq-stat-v {
  display: block;
  font-family: var(--f-mono);
  font-size: clamp(20px, 2.4vw, 32px);
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--gold);
}

.page-faq .faq-stat-l {
  display: block;
  margin-top: 7px;
  font-size: 12.5px;
  line-height: 1.55;
  letter-spacing: .04em;
  color: var(--ink-dim);
}

/* ---------- 筛选栏 ---------- */
.page-faq .faq-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px 20px;
  margin-top: clamp(26px, 4vw, 46px);
  padding-bottom: clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--rule);
}

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

.page-faq .filter-btn {
  appearance: none;
  border: 1px solid var(--rule);
  background: var(--glass-soft);
  color: var(--ink-dim);
  font-family: var(--f-sans);
  font-size: 13px;
  letter-spacing: .04em;
  padding: 8px 15px;
  border-radius: 999px;
  cursor: pointer;
  transition: color .2s var(--ease), border-color .2s var(--ease),
              background .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .filter-btn:hover {
  color: var(--ink);
  border-color: var(--laser);
}

.page-faq .filter-btn:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 2px;
}

.page-faq .filter-btn[aria-pressed="true"] {
  background: linear-gradient(120deg, var(--neon), var(--violet));
  border-color: transparent;
  color: #FFFFFF;
  box-shadow: 0 0 0 1px rgba(53, 225, 232, .45), 0 14px 28px -18px rgba(122, 77, 255, .95);
}

.page-faq .filter-count {
  font-family: var(--f-mono);
  font-size: 12.5px;
  letter-spacing: .08em;
  color: var(--ink-dim);
  white-space: nowrap;
}

/* ---------- 问题组（实色内容层） ---------- */
.page-faq .faq-group {
  position: relative;
  margin-top: clamp(34px, 5vw, 66px);
  background: linear-gradient(168deg, #0E1732 0%, #0B1226 50%, #070B18 100%);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  box-shadow: var(--shadow-deep);
  overflow: hidden;
}

.page-faq .faq-group::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, var(--laser), var(--neon) 52%, transparent 96%);
  opacity: .9;
}

.page-faq .faq-group-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px 34px;
  padding: clamp(22px, 3.2vw, 36px) clamp(20px, 3.2vw, 44px) clamp(16px, 2.4vw, 24px);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-group-heading {
  min-width: 0;
}

.page-faq .faq-group-index {
  display: block;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-group-title {
  margin: 8px 0 0;
  font-size: clamp(19px, 2.6vw, 28px);
  font-weight: 700;
  letter-spacing: -.01em;
  line-height: 1.25;
  color: var(--ink);
}

.page-faq .faq-group-desc {
  margin: 0;
  max-width: 48ch;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink-dim);
}

.page-faq .faq-list {
  display: grid;
  gap: 2px;
  padding: 4px clamp(14px, 2.4vw, 30px) clamp(14px, 2.4vw, 26px);
}

/* ---------- 单条问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--rule);
}

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

.page-faq .faq-q {
  position: relative;
  display: block;
  padding: 16px 38px 16px 4px;
  font-size: 15.5px;
  font-weight: 500;
  line-height: 1.6;
  color: var(--ink);
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease);
}

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

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

.page-faq .faq-q:hover {
  color: var(--laser);
}

.page-faq .faq-q:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.page-faq .faq-q::after {
  content: "+";
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  font-family: var(--f-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--neon);
  transition: color .2s var(--ease);
}

.page-faq .faq-item[open] > .faq-q::after {
  content: "−";
  color: var(--laser);
}

.page-faq .faq-q-num {
  display: inline-block;
  min-width: 26px;
  margin-right: 8px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .08em;
  font-weight: 500;
  color: var(--ink-dim);
  vertical-align: 1px;
}

.page-faq .faq-item[open] > .faq-q {
  color: var(--laser);
}

.page-faq .faq-a {
  margin: 0 4px 20px;
  padding: 16px 18px;
  background: var(--glass-soft);
  border-left: 2px solid rgba(53, 225, 232, .55);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink-dim);
  animation: faq-fade .24s var(--ease) both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-5px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq .faq-a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-a strong {
  color: var(--gold);
  font-weight: 600;
}

.page-faq .faq-a ol {
  counter-reset: faq-step;
  display: grid;
  gap: 9px;
  margin: 10px 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-a ol > li {
  counter-increment: faq-step;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
}

.page-faq .faq-a ol > li::before {
  content: counter(faq-step, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--laser);
  opacity: .9;
}

/* ---------- 步骤卡章节（玻璃层） ---------- */
.page-faq .faq-steps {
  margin-top: clamp(52px, 8vw, 108px);
  padding: clamp(40px, 6vw, 78px) 0 clamp(30px, 4vw, 54px);
  background:
    radial-gradient(760px 380px at 12% 6%, rgba(53, 225, 232, .13), transparent 70%),
    radial-gradient(680px 420px at 92% 88%, rgba(122, 77, 255, .18), transparent 72%),
    linear-gradient(180deg, #070B18 0%, #0B1226 58%, #05070F 100%);
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
}

.page-faq .faq-steps-head {
  max-width: 68ch;
}

.page-faq .faq-steps-head .eyebrow {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-steps-head .section-title {
  margin: 12px 0 0;
  font-size: clamp(21px, 3vw, 34px);
  font-weight: 700;
  line-height: 1.28;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-steps-head .lede {
  margin: 14px 0 0;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink-dim);
}

.page-faq .faq-steps-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(20px, 3vw, 36px);
  margin-top: clamp(24px, 3.6vw, 42px);
}

.page-faq .faq-steps-figure {
  margin: 0;
  min-width: 0;
}

.page-faq .faq-steps-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius);
  border: 1px solid var(--rule);
  opacity: .88;
}

.page-faq .faq-steps-caption {
  margin-top: 12px;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 1.7;
  color: var(--ink-dim);
}

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

.page-faq .faq-step-card {
  position: relative;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--glass);
  border: 1px solid var(--rule);
  border-radius: var(--radius);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  transition: border-color .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-step-card:hover {
  border-color: rgba(53, 225, 232, .5);
  transform: translateY(-2px);
}

.page-faq .faq-step-num {
  display: inline-block;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--gold);
}

.page-faq .faq-step-title {
  margin: 10px 0 0;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  letter-spacing: -.005em;
  color: var(--ink);
}

.page-faq .faq-step-list {
  counter-reset: stepcard;
  display: grid;
  gap: 8px;
  margin: 14px 0 0;
  padding: 0;
  list-style: none;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-faq .faq-step-list > li {
  counter-increment: stepcard;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 9px;
  align-items: baseline;
}

.page-faq .faq-step-list > li::before {
  content: counter(stepcard, decimal-leading-zero);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: .06em;
  color: var(--laser);
  opacity: .85;
}

/* ---------- 延伸引导 ---------- */
.page-faq .faq-next {
  padding-top: clamp(44px, 6vw, 80px);
}

.page-faq .faq-next-title {
  margin: 0 0 clamp(18px, 2.6vw, 30px);
  font-size: clamp(18px, 2.2vw, 24px);
  font-weight: 700;
  line-height: 1.35;
  color: var(--ink);
}

.page-faq .faq-next-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-faq .faq-next-card {
  display: grid;
  gap: 8px;
  padding: clamp(18px, 2.4vw, 26px);
  background: var(--glass-soft);
  border: 1px solid var(--rule);
  border-radius: var(--radius-sm);
  text-decoration: none;
  color: var(--ink-dim);
  transition: border-color .22s var(--ease), background .22s var(--ease), transform .22s var(--ease);
}

.page-faq .faq-next-card:hover,
.page-faq .faq-next-card:focus-visible {
  border-color: var(--laser);
  background: var(--glass);
  transform: translateY(-2px);
  text-decoration: none;
}

.page-faq .faq-next-tag {
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: .14em;
  color: var(--gold);
}

.page-faq .faq-next-text {
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--ink-dim);
}

.page-faq .faq-next-go {
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--laser);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px 22px;
  }

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

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

@media (min-width: 900px) {
  .page-faq .faq-step-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-next-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-steps-layout {
    grid-template-columns: minmax(0, .82fr) minmax(0, 1.5fr);
    align-items: start;
  }

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

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

  .page-faq .faq-step-card,
  .page-faq .faq-next-card {
    transition: none;
  }

  .page-faq .faq-step-card:hover,
  .page-faq .faq-next-card:hover {
    transform: none;
  }
}