.page-faq {
  --faq-accent: var(--muted);
  --faq-narrow: 46em;
  display: block;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-body);
  overflow-x: hidden;
}

.page-faq .shell {
  width: 100%;
  max-width: var(--shell);
  margin: 0 auto;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}

.page-faq .section {
  padding: clamp(44px, 7vw, 100px) 0;
}

/* 面包屑 */
.page-faq .crumbs {
  padding-top: clamp(16px, 3vw, 26px);
}

.page-faq__crumb-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12px;
  letter-spacing: 0.06em;
}

.page-faq .crumbs__item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--muted);
}

.page-faq .crumbs__item + .crumbs__item::before {
  content: "/";
  color: var(--line);
}

.page-faq .crumbs__item[aria-current="page"] {
  color: var(--paper-2);
}

.page-faq .crumbs__item a {
  color: var(--muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 160ms var(--ease), border-color 160ms var(--ease);
}

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

/* 首屏 */
.page-faq__masthead {
  position: relative;
  padding: clamp(26px, 5vw, 56px) 0 clamp(32px, 6vw, 68px);
  background:
    radial-gradient(115% 85% at 92% 0%, rgba(70, 194, 240, 0.16), transparent 62%),
    radial-gradient(90% 70% at 0% 100%, rgba(31, 201, 142, 0.13), transparent 60%),
    var(--ink);
  border-bottom: 1px solid var(--line);
}

.page-faq__masthead-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 46px);
  align-items: end;
}

.page-faq__eyebrow {
  color: var(--winter);
  margin: 0;
}

.page-faq__masthead h1 {
  margin: 14px 0 0;
  max-width: 15em;
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(29px, 5.6vw, 60px);
  line-height: 1.08;
  letter-spacing: -0.022em;
  color: var(--paper);
}

.page-faq__lede {
  margin: 22px 0 0;
  max-width: 38em;
  font-size: clamp(15px, 1.6vw, 17px);
  font-weight: 300;
  line-height: 1.85;
  color: rgba(241, 234, 224, 0.76);
}

.page-faq__facts {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border: 1px solid var(--line);
  background: var(--line);
}

.page-faq__fact {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 14px 16px;
  background: var(--ink);
}

.page-faq__fact-num {
  font-size: clamp(24px, 3.4vw, 34px);
  line-height: 1;
  color: var(--paper);
  font-variant-numeric: tabular-nums;
}

.page-faq__fact-num i {
  font-style: normal;
  font-size: 0.5em;
  margin-left: 3px;
  color: var(--muted);
}

.page-faq__fact-label {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-faq__masthead-figure {
  margin: 0;
  border: 1px solid var(--line);
}

/* 主题跳转 */
.page-faq__topics {
  padding: 18px 0 0;
  background: var(--ink);
}

.page-faq__topic-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq__topic {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--ink-raise);
  color: rgba(241, 234, 224, 0.72);
  font-size: 13px;
  letter-spacing: 0.03em;
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background 180ms var(--ease);
}

.page-faq__topic .mono {
  color: var(--spring);
  font-size: 11px;
}

.page-faq__topic:hover,
.page-faq__topic:focus-visible {
  color: var(--ink);
  background: var(--pulse);
  border-color: var(--pulse);
}

.page-faq__topic:hover .mono,
.page-faq__topic:focus-visible .mono {
  color: var(--ink);
}

/* 索引区 */
.page-faq__index {
  background: var(--paper);
  color: var(--ink);
  border-bottom: 1px solid var(--line-paper);
}

.page-faq__index-head {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  align-items: end;
  border-bottom: 1px solid var(--line-paper);
  padding-bottom: 18px;
}

.page-faq .page-faq__index .label {
  color: #6C7684;
}

.page-faq__index .section__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(24px, 3.8vw, 40px);
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.page-faq__index-note {
  margin: 0;
  font-size: 13px;
  line-height: 1.8;
  color: #5D6773;
  max-width: 34em;
}

.page-faq__list {
  margin: 0;
  padding: 0;
  list-style: none;
  counter-reset: faq;
}

.page-faq__item {
  position: relative;
  border-bottom: 1px solid var(--line-paper);
  scroll-margin-top: 26px;
}

.page-faq__item--spring { --faq-accent: var(--spring); }
.page-faq__item--summer { --faq-accent: var(--summer); }
.page-faq__item--autumn { --faq-accent: var(--autumn); }
.page-faq__item--winter { --faq-accent: var(--winter); }
.page-faq__item--coop { --faq-accent: #7FA324; }

.page-faq__qa {
  position: relative;
  padding-left: clamp(12px, 2.2vw, 24px);
}

.page-faq__qa::before {
  content: "";
  position: absolute;
  left: 0;
  top: 2px;
  bottom: 2px;
  width: 3px;
  background: var(--faq-accent);
  opacity: 0;
  transform: scaleY(0.32);
  transform-origin: top center;
  transition: opacity 320ms var(--ease), transform 320ms var(--ease);
}

.page-faq__qa[open]::before {
  opacity: 1;
  transform: scaleY(1);
}

.page-faq__q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: clamp(12px, 2vw, 20px);
  padding: clamp(15px, 2.2vw, 21px) 0;
  cursor: pointer;
  list-style: none;
  transition: color 180ms var(--ease);
}

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

.page-faq__q:focus-visible {
  outline: 2px solid var(--pulse);
  outline-offset: 4px;
}

.page-faq__no {
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
  font-variant-numeric: tabular-nums;
}

.page-faq__qtext {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(16px, 1.9vw, 19px);
  line-height: 1.5;
  letter-spacing: -0.005em;
  color: var(--ink);
}

.page-faq__q:hover .page-faq__qtext {
  color: var(--faq-accent);
}

.page-faq__mark {
  position: relative;
  width: 15px;
  height: 15px;
  flex: none;
}

.page-faq__mark::before,
.page-faq__mark::after {
  content: "";
  position: absolute;
  background: var(--muted);
  transition: transform 300ms var(--ease), background 200ms var(--ease);
}

.page-faq__mark::before {
  left: 0;
  right: 0;
  top: 7px;
  height: 1.5px;
}

.page-faq__mark::after {
  top: 0;
  bottom: 0;
  left: 7px;
  width: 1.5px;
}

.page-faq__qa[open] .page-faq__mark::after {
  transform: scaleY(0);
}

.page-faq__qa[open] .page-faq__mark::before {
  background: var(--faq-accent);
}

.page-faq__a {
  padding: 0 clamp(12px, 2.2vw, 24px) clamp(18px, 2.6vw, 26px);
  max-width: 44em;
  font-size: 15px;
  line-height: 1.85;
  color: #3B4650;
}

.page-faq__a p {
  margin: 0 0 12px;
}

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

.page-faq__stamp {
  display: inline-block;
  margin-top: 2px;
  padding: 4px 9px;
  border: 1px solid var(--line-paper);
  border-radius: 2px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  color: #5A6673;
  background: rgba(217, 209, 196, 0.35);
}

.page-faq__links {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 18px;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--line-paper);
  font-size: 13px;
  color: var(--muted);
}

.page-faq__links a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 2px solid var(--faq-accent);
  padding-bottom: 1px;
  transition: color 160ms var(--ease);
}

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

/* 刷新频率区 */
.page-faq__refresh {
  border-bottom: 1px solid var(--line);
}

.page-faq .page-faq__refresh .label {
  color: var(--summer);
}

.page-faq__refresh .section__title,
.page-faq__table .section__title,
.page-faq__client .section__title,
.page-faq__coop .section__title {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-style: italic;
  font-size: clamp(24px, 4vw, 44px);
  line-height: 1.1;
  letter-spacing: -0.022em;
}

.page-faq__refresh-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 44px);
  margin-top: clamp(26px, 4vw, 42px);
}

.page-faq__refresh-copy p {
  margin: 0 0 16px;
  max-width: 38em;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.85;
  color: rgba(241, 234, 224, 0.78);
}

.page-faq__legend {
  display: grid;
  grid-template-columns: 1fr;
  gap: 10px;
  margin: 24px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq__legend-item {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--muted);
}

.page-faq__swatch {
  width: 10px;
  height: 10px;
  flex: none;
  border-radius: 1px;
}

.page-faq__swatch--spring { background: var(--spring); }
.page-faq__swatch--summer { background: var(--summer); }
.page-faq__swatch--autumn { background: var(--autumn); }
.page-faq__swatch--winter { background: var(--winter); }

.page-faq__refresh-figure {
  margin: 0;
  padding: clamp(16px, 2.4vw, 26px) 0 0;
  border-top: 1px solid var(--line);
}

.page-faq__timeline-scroll {
  overflow-x: auto;
  overflow-y: hidden;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  padding-bottom: 8px;
}

.page-faq__timeline {
  display: block;
  width: 760px;
  max-width: none;
  height: auto;
}

.page-faq__timeline .tl-axis {
  stroke: var(--line);
  stroke-width: 1;
}

.page-faq__timeline .tl-tick line {
  stroke-width: 1;
}

.page-faq__timeline .tl-tick circle {
  stroke: none;
}

.page-faq__timeline .tl-val {
  font-family: var(--font-mono);
  font-size: 16px;
  fill: var(--paper);
}

.page-faq__timeline .tl-name {
  font-family: var(--font-body);
  font-size: 12px;
  letter-spacing: 0.06em;
  fill: var(--muted);
}

.page-faq__timeline .tl-tick--summer line { stroke: var(--summer); }
.page-faq__timeline .tl-tick--summer circle { fill: var(--summer); }
.page-faq__timeline .tl-tick--autumn line { stroke: var(--autumn); }
.page-faq__timeline .tl-tick--autumn circle { fill: var(--autumn); }
.page-faq__timeline .tl-tick--winter line { stroke: var(--winter); }
.page-faq__timeline .tl-tick--winter circle { fill: var(--winter); }
.page-faq__timeline .tl-tick--spring line { stroke: var(--spring); }
.page-faq__timeline .tl-tick--spring circle { fill: var(--spring); }
.page-faq__timeline .tl-tick--pulse line { stroke: var(--pulse); }
.page-faq__timeline .tl-tick--pulse circle { fill: var(--pulse); }

.page-faq__refresh .media-frame__caption {
  margin-top: 12px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--muted);
}

.page-faq__texture {
  margin: 0;
  border: 1px solid var(--line);
  opacity: 0.9;
}

/* 积分榜规则区 */
.page-faq__table {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .page-faq__table .label {
  color: #8A6A12;
}

.page-faq__rules {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-paper);
}

.page-faq__rule {
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line-paper);
}

.page-faq__rule-title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2vw, 20px);
  line-height: 1.4;
  letter-spacing: -0.01em;
  color: var(--ink);
  padding-left: 14px;
  border-left: 3px solid var(--autumn);
}

.page-faq__rule p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: #4A545F;
}

.page-faq__table-foot {
  margin: clamp(22px, 3vw, 32px) 0 0;
  font-size: 13px;
  line-height: 1.9;
  color: #5D6773;
}

.page-faq__table-foot a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--autumn);
}

.page-faq__table-foot a:hover,
.page-faq__table-foot a:focus-visible {
  color: #8A6A12;
}

/* 客户端排查区 */
.page-faq__client {
  border-bottom: 1px solid var(--line);
}

.page-faq .page-faq__client .label {
  color: var(--summer);
}

.page-faq__steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
  margin: clamp(24px, 4vw, 40px) 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.page-faq__step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(14px, 2.4vw, 26px);
  padding: clamp(18px, 2.6vw, 26px) 0;
  border-bottom: 1px solid var(--line);
}

.page-faq__step-no {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--summer);
  padding-top: 4px;
  font-variant-numeric: tabular-nums;
}

.page-faq__step-title {
  margin: 0 0 9px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(16px, 2vw, 19px);
  line-height: 1.4;
  color: var(--paper);
}

.page-faq__step-body p {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  font-weight: 300;
  line-height: 1.85;
  color: rgba(241, 234, 224, 0.74);
}

.page-faq__step-body a {
  color: var(--pulse);
  text-decoration: none;
  border-bottom: 1px solid rgba(184, 255, 61, 0.5);
}

.page-faq__step-body a:hover,
.page-faq__step-body a:focus-visible {
  border-bottom-color: var(--pulse);
}

/* 合作区 */
.page-faq__coop {
  background: var(--paper);
  color: var(--ink);
}

.page-faq .page-faq__coop .label {
  color: #5A6673;
}

.page-faq__coop-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(24px, 4vw, 40px);
  border: 1px solid var(--line-paper);
  background: var(--line-paper);
}

.page-faq__coop-card {
  padding: clamp(22px, 3vw, 32px);
  background: var(--paper);
}

.page-faq__coop-title {
  margin: 0 0 12px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(17px, 2vw, 20px);
  letter-spacing: -0.01em;
  color: var(--ink);
}

.page-faq__coop-card p {
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.85;
  color: #4A545F;
}

.page-faq__coop-meta {
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  padding-top: 12px;
  border-top: 1px solid var(--line-paper);
}

.page-faq__coop-card .btn {
  display: inline-block;
  text-decoration: none;
}

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

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

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

  .page-faq__coop-card:last-child {
    grid-column: 1 / -1;
  }
}

@media (min-width: 900px) {
  .page-faq__masthead-grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, 1fr);
  }

  .page-faq__index-head {
    grid-template-columns: minmax(0, 1fr) minmax(0, 26em);
  }

  .page-faq__refresh-grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
    align-items: start;
  }

  .page-faq__refresh-copy {
    grid-column: 1;
  }

  .page-faq__refresh-figure {
    grid-column: 2;
    grid-row: 1;
    padding-top: 0;
    border-top: none;
  }

  .page-faq__texture {
    grid-column: 1 / -1;
  }

  .page-faq__timeline {
    width: 100%;
  }

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

  .page-faq__rule {
    padding-right: clamp(20px, 3vw, 42px);
  }

  .page-faq__rule:nth-child(odd) {
    border-right: 1px solid var(--line-paper);
  }

  .page-faq__rule:nth-child(even) {
    padding-left: clamp(20px, 3vw, 42px);
  }

  .page-faq__coop-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq__coop-card:last-child {
    grid-column: auto;
  }
}

@media (min-width: 1180px) {
  .page-faq__index-note {
    text-align: right;
  }

  .page-faq__a {
    padding-left: clamp(24px, 3vw, 40px);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq * {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}