.page-faq {
  display: block;
  color: var(--c-ink);
}

.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-top: clamp(26px, 4.5vw, 54px);
  padding-bottom: clamp(26px, 4vw, 46px);
  border-bottom: var(--line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -30% -10% 0;
  background-image:
    linear-gradient(to right, var(--c-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--c-line) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.55;
  -webkit-mask-image: radial-gradient(120% 85% at 12% 0%, #000 0%, transparent 72%);
  mask-image: radial-gradient(120% 85% at 12% 0%, #000 0%, transparent 72%);
  pointer-events: none;
}

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

.page-faq .faq-h1 {
  margin: 10px 0 0;
  max-width: 20ch;
  font-family: var(--ff-serif);
  font-size: clamp(30px, 5.4vw, 52px);
  font-weight: 600;
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--c-ink);
}

.page-faq .faq-lede {
  margin: 18px 0 0;
  max-width: 62ch;
  font-size: clamp(16px, 1.6vw, 20px);
  line-height: 1.78;
  color: var(--c-ink);
}

.page-faq .faq-lede a {
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--c-accent);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-band {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: clamp(24px, 4vw, 40px);
  border-top: var(--line);
  border-left: var(--line);
}

.page-faq .faq-band .data-cell {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  border-right: var(--line);
  border-bottom: var(--line);
}

.page-faq .faq-band .data-key {
  font-family: var(--ff-sans);
  font-size: var(--fs-12);
  letter-spacing: 0.14em;
  color: var(--c-muted);
}

.page-faq .faq-band .data-value {
  font-family: var(--ff-mono);
  font-size: var(--fs-28);
  font-weight: 700;
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
  color: var(--c-ink);
  line-height: 1;
}

.page-faq .faq-band .data-value--accent {
  color: var(--c-accent);
}

.page-faq .faq-band .data-unit {
  margin-left: 6px;
  font-size: var(--fs-12);
  font-weight: 400;
  color: var(--c-muted);
}

.page-faq .chapter-note a {
  color: var(--c-accent);
  text-decoration: none;
}

/* 三步速查 */
.page-faq .steps {
  list-style: none;
  margin: clamp(20px, 3vw, 32px) 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-top: var(--line);
}

.page-faq .step {
  padding: 22px 16px 22px 22px;
  border-left: 1px solid var(--c-line);
  border-bottom: var(--line);
}

.page-faq .step-num {
  display: inline-block;
  padding: 3px 9px;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.14em;
  color: var(--c-bg);
  background: var(--c-paper);
  border-radius: var(--r-sm);
}

.page-faq .step-title {
  margin: 14px 0 8px;
  font-family: var(--ff-serif);
  font-size: var(--fs-20);
  font-weight: 600;
  line-height: 1.35;
}

.page-faq .step-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-faq .step-text a {
  color: var(--c-accent);
  text-decoration: none;
}

.page-faq .step-text a:hover {
  color: var(--c-accent-soft);
}

.page-faq .step-check {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-top: 16px;
  font-size: var(--fs-12);
  letter-spacing: 0.06em;
  color: var(--c-muted);
  cursor: pointer;
}

.page-faq .step-input {
  position: absolute;
  width: 1px;
  height: 1px;
  opacity: 0;
}

.page-faq .step-box {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  border: 1px solid var(--c-dim);
  border-radius: var(--r-sm);
  transition: border-color var(--dur) var(--ease), background-color var(--dur) var(--ease);
}

.page-faq .step-input:checked + .step-box {
  border-color: var(--c-accent);
  background: var(--c-accent);
}

.page-faq .step-input:checked + .step-box::after {
  content: "";
  position: absolute;
  left: 4px;
  top: 1px;
  width: 5px;
  height: 9px;
  border-right: 2px solid var(--c-bg);
  border-bottom: 2px solid var(--c-bg);
  transform: rotate(45deg);
}

.page-faq .step-input:focus-visible + .step-box {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

.page-faq .step-input:checked ~ .step-label {
  color: var(--c-accent);
}

/* 两列结构 */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .fix-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .fix-item {
  padding: 18px 0;
  border-top: var(--line);
}

.page-faq .fix-item:last-child {
  border-bottom: var(--line);
}

.page-faq .fix-title {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 8px;
  font-family: var(--ff-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.page-faq .fix-dot {
  flex: none;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--c-accent);
  box-shadow: 0 0 10px rgba(63, 227, 176, 0.7);
}

.page-faq .fix-act,
.page-faq .fix-judge {
  margin: 0 0 6px;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-faq .fix-act strong,
.page-faq .fix-judge strong {
  color: var(--c-ink);
  font-weight: 600;
}

.page-faq .faq-figure {
  margin: 0;
  padding: 10px;
  border: var(--line);
  background: var(--c-panel-deep);
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  background: var(--c-panel);
}

.page-faq .faq-figure .media-caption {
  margin-top: 10px;
  font-size: var(--fs-12);
  line-height: 1.7;
  color: var(--c-muted);
}

/* 入口变更步骤 */
.page-faq .order-list {
  counter-reset: order;
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .order-list li {
  position: relative;
  counter-increment: order;
  padding: 14px 0 14px 46px;
  border-top: var(--line);
  font-size: var(--fs-16);
  line-height: 1.75;
  color: var(--c-ink);
}

.page-faq .order-list li:last-child {
  border-bottom: var(--line);
}

.page-faq .order-list li::before {
  content: counter(order, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 15px;
  font-family: var(--ff-mono);
  font-size: var(--fs-12);
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--c-accent);
}

.page-faq .faq-note {
  margin: 20px 0 0;
  font-size: var(--fs-12);
  line-height: 1.8;
  letter-spacing: 0.02em;
  color: var(--c-muted);
}

/* 数据疑问 */
.page-faq .faq-twocol {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .plain-item {
  padding: 18px 0;
  border-top: var(--line);
}

.page-faq .plain-item:last-child {
  border-bottom: var(--line);
}

.page-faq .plain-item h3 {
  margin: 0 0 8px;
  font-family: var(--ff-serif);
  font-size: var(--fs-20);
  font-weight: 600;
}

.page-faq .plain-item p {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--c-muted);
}

.page-faq .faq-sidebar {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 20px;
  border: var(--line);
  background: var(--c-panel);
}

.page-faq .sidebar-text {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.8;
  color: var(--c-muted);
}

.page-faq .faq-sidebar .help-links {
  margin: 4px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

/* 分类问答 */
.page-faq .faq-index {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: clamp(16px, 2.6vw, 26px);
}

.page-faq .faq-index .chip {
  font-family: var(--ff-mono);
  letter-spacing: 0.1em;
}

.page-faq .qa-groups {
  margin-top: clamp(26px, 4vw, 44px);
}

.page-faq .qa-group {
  margin-top: clamp(28px, 4vw, 46px);
}

.page-faq .qa-group:first-child {
  margin-top: 0;
}

.page-faq .qa-group-title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--c-line);
  font-family: var(--ff-serif);
  font-size: var(--fs-20);
  font-weight: 600;
  scroll-margin-top: calc(var(--header-h) + 24px);
}

.page-faq .qa-item {
  border-bottom: var(--line);
}

.page-faq .qa-q {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: var(--fs-16);
  font-weight: 500;
  line-height: 1.6;
  color: var(--c-ink);
  transition: color var(--dur) var(--ease);
}

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

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

.page-faq .qa-q:hover {
  color: var(--c-accent-soft);
}

.page-faq .qa-q:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 2px;
}

.page-faq .qa-arrow {
  position: relative;
  flex: none;
  width: 14px;
  height: 14px;
  margin-top: 5px;
}

.page-faq .qa-arrow::before,
.page-faq .qa-arrow::after {
  content: "";
  position: absolute;
  background: var(--c-accent);
  transition: transform var(--dur) var(--ease), opacity var(--dur) var(--ease);
}

.page-faq .qa-arrow::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 1.5px;
}

.page-faq .qa-arrow::after {
  left: 6px;
  top: 0;
  width: 1.5px;
  height: 14px;
}

.page-faq .qa-item[open] .qa-arrow::after {
  transform: scaleY(0);
  opacity: 0;
}

.page-faq .qa-a {
  padding: 0 26px 18px 0;
}

.page-faq .qa-a p {
  margin: 0 0 10px;
  font-size: var(--fs-14);
  line-height: 1.85;
  color: var(--c-muted);
}

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

.page-faq .qa-a a {
  color: var(--c-accent);
  text-decoration: none;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .qa-a a:hover {
  color: var(--c-accent-soft);
}

/* 人工协助 */
.page-faq .help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
  margin-top: clamp(20px, 3vw, 32px);
}

.page-faq .help-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  padding: 20px;
  border: var(--line);
  background: var(--c-panel);
}

.page-faq .help-val {
  margin: 0;
  font-family: var(--ff-mono);
  font-size: var(--fs-20);
  font-weight: 700;
  letter-spacing: 0.02em;
  color: var(--c-accent);
  word-break: break-all;
}

.page-faq .help-desc {
  margin: 0;
  font-size: var(--fs-14);
  line-height: 1.78;
  color: var(--c-muted);
}

.page-faq .help-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: auto 0 0;
  padding-top: 6px;
}

@keyframes faq-in {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.page-faq [data-reveal][data-revealed="true"] {
  animation: faq-in 260ms var(--ease) both;
}

@media (min-width: 760px) {
  .page-faq .faq-band {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    border-top: 0;
  }

  .page-faq .step {
    padding: 6px 28px 6px 24px;
    border-bottom: 0;
  }

  .page-faq .step + .step {
    border-left: 1px solid var(--c-line);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-faq .faq-split--reverse {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
  }

  .page-faq .faq-twocol {
    grid-template-columns: minmax(0, 1.6fr) minmax(0, 0.9fr);
    align-items: start;
  }

  .page-faq .faq-sidebar {
    position: sticky;
    top: calc(var(--header-h) + 24px);
  }
}

@media (min-width: 820px) {
  .page-faq .help-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq [data-reveal][data-revealed="true"] {
    animation: none;
  }

  .page-faq .q a-arrow::before,
  .page-faq .qa-arrow::after,
  .page-faq .step-box {
    transition: none;
  }
}