.page-faq {
  --faq-rule: rgba(28, 68, 55, 0.55);
  --faq-rule-soft: rgba(28, 68, 55, 0.28);
  background: var(--pitch);
  color: var(--chalk);
  font-family: var(--font-body);
  display: block;
}

.page-faq .breadcrumb {
  margin-top: clamp(16px, 2.4vw, 28px);
}

/* ---------- 顶部刻度尺 ---------- */
.page-faq .faq-ruler {
  height: 20px;
  width: 100%;
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule-soft);
  background-image: repeating-linear-gradient(
    to right,
    var(--faq-rule) 0 1px,
    transparent 1px 26px
  );
  background-position: 0 100%;
  background-size: auto 9px;
  background-repeat: repeat-x;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(28px, 4.5vw, 60px);
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(28px, 4vw, 56px);
  align-items: start;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6vw, 74px);
  line-height: 1.06;
  letter-spacing: -0.015em;
  color: var(--chalk);
  transform: skewX(-2deg);
  transform-origin: left bottom;
}

.page-faq .faq-hero__intro {
  margin: 0 0 26px;
  max-width: 44ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.86;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 30px;
}

.page-faq .faq-quick {
  border-top: 1px solid var(--faq-rule);
  border-bottom: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-quick .index-group__summary,
.page-faq .faq-group .index-group__summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 2px;
}

.page-faq .faq-quick .index-group__summary::-webkit-details-marker,
.page-faq .faq-group .index-group__summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-quick .index-group__no {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  border: 1px solid var(--faq-rule);
  padding: 2px 7px;
  flex: none;
}

.page-faq .faq-quick__label {
  flex: 1 1 auto;
  font-size: 15px;
  color: var(--chalk);
}

.page-faq .faq-quick__hint {
  flex: none;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-quick[open] .faq-quick__hint {
  color: var(--amber);
}

.page-faq .faq-quick__list {
  margin: 0;
  padding: 4px 0 16px;
  list-style: none;
  display: grid;
  gap: 8px;
}

.page-faq .faq-quick__list li {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding-left: 16px;
  border-left: 1px solid var(--faq-rule);
}

.page-faq .faq-quick__list a {
  color: var(--cyan-soft);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease);
}

.page-faq .faq-quick__list a:hover,
.page-faq .faq-quick__list a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

.page-faq .faq-quick__list span {
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  flex: none;
}

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

.page-faq .faq-hero__figure .figure__media {
  border: 3px solid var(--grid);
  box-shadow: var(--shadow-hard);
  overflow: hidden;
}

.page-faq .faq-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.7) brightness(0.78) contrast(1.1);
}

.page-faq .faq-hero__figure .figure__caption {
  margin-top: 12px;
  font-size: 12px;
  line-height: 1.75;
  color: var(--mist);
  opacity: 0.72;
  max-width: 40ch;
}

/* ---------- 三条路径 ---------- */
.page-faq .faq-paths__rail {
  display: grid;
  gap: clamp(22px, 3vw, 40px);
  margin-top: clamp(24px, 3.4vw, 44px);
}

.page-faq .faq-paths__rail .rail__item {
  position: relative;
  padding-left: 34px;
  border-left: 1px solid var(--faq-rule);
}

.page-faq .faq-paths__rail .rail__dot {
  position: absolute;
  left: -6px;
  top: 6px;
  width: 11px;
  height: 11px;
  background: var(--pitch);
  border: 2px solid var(--grid);
  transition: border-color var(--t-base) var(--ease), background-color var(--t-base) var(--ease);
}

.page-faq .faq-paths__rail .rail__item[data-active="true"] .rail__dot {
  border-color: var(--cyan);
  background: var(--cyan);
}

.page-faq .faq-paths__rail .rail__time {
  display: block;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--amber);
  margin-bottom: 8px;
}

.page-faq .faq-paths__rail h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-size: clamp(19px, 2.2vw, 25px);
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--chalk);
}

.page-faq .faq-steps {
  margin: 0 0 12px;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
  display: grid;
  gap: 9px;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 34px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--chalk);
  opacity: 0.84;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--cyan);
  opacity: 0.8;
}

.page-faq .faq-paths__rail .anno {
  margin: 0;
  font-size: 12px;
  line-height: 1.8;
  letter-spacing: 0.05em;
  color: var(--mist);
  opacity: 0.72;
}

/* ---------- 筛选维度 ---------- */
.page-faq .faq-dims {
  margin-top: clamp(24px, 3.4vw, 44px);
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-dim {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 16px 20px;
  padding: clamp(20px, 2.6vw, 32px) 0;
  border-bottom: 1px solid var(--faq-rule-soft);
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-dim:hover {
  background: var(--cyan-12);
}

.page-faq .faq-dim__no {
  font-family: var(--font-data);
  font-size: clamp(24px, 3.4vw, 40px);
  line-height: 1;
  color: var(--grid);
  letter-spacing: -0.02em;
}

.page-faq .faq-dim:hover .faq-dim__no {
  color: var(--amber);
}

.page-faq .faq-dim__main h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: clamp(18px, 2vw, 23px);
  font-weight: 700;
  color: var(--chalk);
}

.page-faq .faq-dim__main p {
  margin: 0;
  font-size: 15px;
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.82;
  max-width: 62ch;
}

.page-faq .faq-dim__side {
  grid-column: 2;
  margin: 0;
  font-size: 12px;
  line-height: 1.8;
  color: var(--mist);
  opacity: 0.72;
}

.page-faq .faq-filter__tip {
  margin: clamp(26px, 3.4vw, 44px) 0 0;
  padding: 20px 24px;
  border-left: 3px solid var(--amber);
  background: var(--amber-20);
  font-size: 15px;
  line-height: 1.9;
  color: var(--chalk);
  max-width: 76ch;
}

/* ---------- 字段表格 ---------- */
.page-faq .faq-fields__layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 3.6vw, 48px);
  margin-top: clamp(24px, 3.4vw, 44px);
}

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

.page-faq .faq-fields__figure .figure__media {
  border: 1px solid var(--faq-rule);
  overflow: hidden;
}

.page-faq .faq-fields__figure img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
  filter: saturate(0.4) brightness(0.6) contrast(1.15);
}

.page-faq .faq-fields__figure .figure__caption {
  margin-top: 10px;
  font-size: 12px;
  line-height: 1.75;
  color: var(--mist);
  opacity: 0.72;
}

.page-faq .faq-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-table {
  width: 100%;
  min-width: 620px;
  border-collapse: collapse;
  font-family: var(--font-data);
  font-size: 13px;
  text-align: left;
}

.page-faq .faq-table caption {
  text-align: left;
}

.page-faq .faq-table thead th {
  padding: 12px 16px 12px 0;
  font-weight: 500;
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--mist);
  border-bottom: 1px solid var(--faq-rule);
  white-space: nowrap;
}

.page-faq .faq-table tbody th {
  padding: 16px 16px 16px 0;
  font-weight: 600;
  font-size: 14px;
  font-family: var(--font-display);
  letter-spacing: 0;
  color: var(--chalk);
  border-bottom: 1px solid var(--faq-rule-soft);
  vertical-align: top;
  white-space: nowrap;
}

.page-faq .faq-table tbody td {
  padding: 16px 18px 16px 0;
  line-height: 1.8;
  color: var(--chalk);
  opacity: 0.84;
  border-bottom: 1px solid var(--faq-rule-soft);
  vertical-align: top;
}

.page-faq .faq-table tbody tr {
  transition: background-color var(--t-fast) var(--ease);
}

.page-faq .faq-table tbody tr:hover,
.page-faq .faq-table tbody tr:focus-within {
  background: var(--cyan-12);
}

.page-faq .faq-src {
  display: block;
  margin-top: 8px;
  font-size: 11px;
  line-height: 1.7;
  color: var(--cyan);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease);
}

.page-faq .faq-table tbody tr:hover .faq-src,
.page-faq .faq-table tbody tr:focus-within .faq-src {
  opacity: 0.9;
}

@media (hover: none) {
  .page-faq .faq-src {
    opacity: 0.75;
  }
}

/* ---------- 口径对照 ---------- */
.page-faq .faq-rings {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  gap: clamp(20px, 3.6vw, 52px);
  margin-top: clamp(24px, 3.4vw, 46px);
}

.page-faq .faq-ring {
  flex: 1 1 190px;
  margin: 0;
  transition: transform var(--t-base) var(--ease);
}

.page-faq .faq-ring--lg { max-width: 262px; }
.page-faq .faq-ring--md { max-width: 204px; }
.page-faq .faq-ring--sm { max-width: 158px; }

.page-faq .faq-ring:hover {
  transform: translateY(-6px);
}

.page-faq .faq-ring__svg svg {
  display: block;
  width: 100%;
  height: auto;
  transform: rotate(-90deg);
}

.page-faq .faq-ring__track {
  fill: none;
  stroke: var(--grid);
  stroke-width: 4;
  opacity: 0.5;
}

.page-faq .faq-ring__arc {
  fill: none;
  stroke-width: 7;
  stroke-linecap: butt;
}

.page-faq .faq-ring__arc--cyan { stroke: var(--cyan); }
.page-faq .faq-ring__arc--amber { stroke: var(--amber); }
.page-faq .faq-ring__arc--soft { stroke: var(--cyan-soft); opacity: 0.8; }

.page-faq .faq-ring__name {
  margin: 16px 0 8px;
  font-family: var(--font-display);
  font-size: clamp(15px, 1.8vw, 19px);
  font-weight: 700;
  color: var(--chalk);
  transition: color var(--t-fast) var(--ease);
}

.page-faq .faq-ring:hover .faq-ring__name {
  color: var(--cyan);
}

.page-faq .faq-ring__desc {
  margin: 0 0 10px;
  font-size: 13px;
  line-height: 1.85;
  color: var(--chalk);
  opacity: 0.76;
}

.page-faq .faq-ring__foot {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--mist);
  opacity: 0.7;
}

.page-faq .faq-scope__warn {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
  margin: clamp(30px, 4vw, 52px) 0 0;
  padding-top: 22px;
  border-top: 1px solid var(--faq-rule);
  font-size: 14px;
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.88;
  max-width: 78ch;
}

/* ---------- 常见疑问 ---------- */
.page-faq .faq-groups {
  margin-top: clamp(24px, 3.4vw, 44px);
  display: grid;
  gap: 14px;
}

.page-faq .faq-group {
  border: 2px solid var(--grid);
  background: var(--ink);
  transition: border-color var(--t-base) var(--ease), box-shadow var(--t-base) var(--ease);
}

.page-faq .faq-group:hover {
  border-color: var(--cyan-30);
}

.page-faq .faq-group[open] {
  border-color: var(--cyan);
  box-shadow: var(--shadow-soft);
}

.page-faq .faq-group .index-group__summary {
  padding: 18px 20px;
}

.page-faq .faq-group .index-group__no {
  flex: none;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--amber);
  border: 1px solid var(--faq-rule);
  padding: 3px 8px;
}

.page-faq .faq-group__title {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-size: clamp(16px, 1.9vw, 20px);
  font-weight: 700;
  color: var(--chalk);
}

.page-faq .faq-group__hint {
  flex: none;
  font-family: var(--font-data);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-group__tick {
  flex: none;
  width: 46px;
  height: 5px;
  background: var(--grid);
  transition: background-color var(--t-base) var(--ease), width var(--t-base) var(--ease);
}

.page-faq .faq-group[open] .faq-group__tick {
  width: 72px;
  background: var(--cyan);
}

.page-faq .faq-group .index-group__body {
  padding: 0 20px 20px;
}

.page-faq .faq-list {
  margin: 0;
  padding-top: 6px;
  border-top: 1px solid var(--faq-rule-soft);
}

.page-faq .faq-list dt {
  margin: 18px 0 6px;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--cyan-soft);
}

.page-faq .faq-list dd {
  margin: 0;
  padding-left: 16px;
  border-left: 1px solid var(--faq-rule);
  font-size: 14px;
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.82;
  max-width: 68ch;
}

.page-faq .faq-questions__more {
  margin-top: clamp(30px, 4vw, 52px);
  padding-top: 24px;
  border-top: 1px solid var(--faq-rule);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
}

.page-faq .faq-questions__more p {
  margin: 0;
  font-size: 14px;
  line-height: 1.9;
  color: var(--chalk);
  opacity: 0.8;
  max-width: 52ch;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-dims {
    display: grid;
    grid-template-columns: 1fr;
  }

  .page-faq .faq-dim {
    grid-template-columns: auto minmax(0, 1fr) minmax(0, 280px);
    align-items: start;
  }

  .page-faq .faq-dim__side {
    grid-column: 3;
    padding-top: 6px;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: 5fr 3fr;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-faq .faq-fields__layout {
    grid-template-columns: minmax(0, 7fr) minmax(0, 9fr);
    align-items: start;
  }

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

  .page-faq .faq-table-wrap {
    border-top: none;
  }
}

@media (max-width: 759px) {
  .page-faq .faq-dim__side {
    grid-column: 1 / -1;
  }

  .page-faq .faq-rings {
    gap: 26px;
  }

  .page-faq .faq-ring {
    flex: 1 1 100%;
    max-width: 220px;
  }

  .page-faq .faq-ring--sm {
    max-width: 160px;
  }

  .page-faq .faq-group .index-group__summary {
    flex-wrap: wrap;
    row-gap: 8px;
  }

  .page-faq .faq-group__hint {
    order: 3;
  }

  .page-faq .faq-group__tick {
    width: 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-ring,
  .page-faq .faq-src,
  .page-faq .faq-group,
  .page-faq .faq-group__tick,
  .page-faq .rail__dot {
    transition: none;
  }

  .page-faq .faq-ring:hover {
    transform: none;
  }
}