.page-faq .wrap {
  padding-top: 10px;
}

.page-faq .breadcrumbs {
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--ink-dim);
  margin: 8px 0 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .breadcrumbs a {
  color: var(--ink-soft);
  text-decoration: none;
}

.page-faq .breadcrumbs a:hover {
  color: var(--flare);
}

.page-faq .crumb-sep {
  color: var(--grid);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: clamp(26px, 4.5vw, 58px) 0 clamp(22px, 3vw, 40px);
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: clamp(20px, 4vw, 52px);
  right: 0;
  width: clamp(90px, 20vw, 260px);
  height: 6px;
  background: linear-gradient(90deg, var(--grass), var(--flare));
  transform: skewX(-34deg);
  transform-origin: right center;
  opacity: .9;
}

.page-faq .faq-hero-tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--grass-2);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  max-width: 20ch;
  font-size: clamp(29px, 5.4vw, 62px);
  line-height: 1.08;
  letter-spacing: -.015em;
  font-weight: 800;
  color: var(--chalk);
}

.page-faq .faq-hero-lede {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: clamp(14.5px, 1.6vw, 16.5px);
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-hero-facts {
  list-style: none;
  margin: 30px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  border-top: 1px solid var(--hair);
}

.page-faq .faq-hero-facts li {
  display: grid;
  gap: 5px;
  padding: 16px 16px 6px 0;
  border-right: 1px solid var(--hair);
}

.page-faq .faq-hero-facts li:last-child {
  border-right: 0;
}

.page-faq .faq-hero-facts li:not(:first-child) {
  padding-left: 16px;
}

.page-faq .faq-fact-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 2.6vw, 30px);
  line-height: 1;
  font-weight: 700;
  color: var(--flare);
}

.page-faq .faq-fact-label {
  font-size: 12.5px;
  line-height: 1.5;
  color: var(--ink-dim);
  letter-spacing: .02em;
}

/* ---------- 两栏栅格 ---------- */

.page-faq .page-grid {
  display: grid;
  grid-template-columns: minmax(148px, 196px) minmax(0, 1fr);
  gap: clamp(20px, 3.2vw, 52px);
  align-items: start;
  margin-top: clamp(24px, 3.5vw, 48px);
}

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

/* ---------- 左侧编号索引 ---------- */

.page-faq .rail {
  position: sticky;
  top: calc(var(--header-h) + 18px);
}

.page-faq .rail-station {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .24em;
  text-transform: uppercase;
  color: var(--ink-dim);
}

.page-faq .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .rail-link {
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px 9px 12px;
  border-left: 2px solid var(--grid);
  color: var(--ink-soft);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.5;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}

.page-faq .rail-link:hover {
  color: var(--chalk);
  background: rgba(31, 111, 74, .16);
  border-left-color: var(--grass-2);
}

.page-faq .rail-link[aria-current="true"] {
  color: var(--chalk);
  background: rgba(255, 106, 19, .1);
  border-left-color: var(--flare);
}

.page-faq .rail-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--ink-dim);
}

.page-faq .rail-link[aria-current="true"] .rail-num {
  color: var(--flare);
}

/* ---------- 章节抬头 ---------- */

.page-faq .faq-section {
  padding: clamp(26px, 3.6vw, 46px) 0;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-section:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-faq .faq-section .section-head {
  display: grid;
  gap: 6px;
  padding-left: 14px;
  border-left: 3px solid var(--grass);
  margin-bottom: clamp(18px, 2.4vw, 26px);
}

.page-faq .faq-section .section-num {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .24em;
  color: var(--flare);
}

.page-faq .faq-section .section-title {
  margin: 0;
  font-size: clamp(19px, 2.5vw, 27px);
  line-height: 1.35;
  font-weight: 700;
  letter-spacing: -.008em;
  color: var(--chalk);
}

.page-faq .faq-section .section-kicker {
  margin: 2px 0 0;
  max-width: 58ch;
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink-dim);
}

/* ---------- 图与图例 ---------- */

.page-faq .media-frame {
  margin: 0 0 22px;
  border: 1px solid var(--hair);
  background: var(--night-2);
  overflow: hidden;
}

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

.page-faq .media-frame figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  line-height: 1.6;
  color: var(--ink-dim);
}

.page-faq .legend {
  list-style: none;
  margin: 0 0 24px;
  padding: 14px 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px 26px;
  border-top: 1px solid var(--hair);
}

.page-faq .legend-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  font-size: 13px;
  color: var(--ink-soft);
  transition: opacity var(--dur) var(--ease);
}

.page-faq .legend-swatch {
  width: 24px;
  height: 10px;
  background: var(--tier, var(--graphite));
  transform: skewX(-20deg);
  flex: none;
}

/* ---------- 折叠问答 ---------- */

.page-faq .faq-list {
  border-top: 1px solid var(--hair);
}

.page-faq .qa {
  border-bottom: 1px solid var(--hair);
  transition: background var(--dur) var(--ease);
}

.page-faq .qa[open] {
  background: rgba(18, 41, 63, .55);
}

.page-faq .qa-q {
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr) 20px;
  gap: 12px;
  align-items: start;
  padding: 15px 10px 15px 4px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.7vw, 17.5px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--chalk);
  letter-spacing: -.005em;
  transition: color var(--dur) var(--ease);
}

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

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

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

.page-faq .qa-no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--ink-dim);
  padding-top: 4px;
}

.page-faq .qa[open] .qa-no {
  color: var(--flare);
}

.page-faq .qa-mark {
  justify-self: end;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1.4;
  color: var(--grass-2);
}

.page-faq .qa-mark::before {
  content: "+";
}

.page-faq .qa[open] .qa-mark {
  color: var(--flare);
}

.page-faq .qa[open] .qa-mark::before {
  content: "−";
}

.page-faq .qa-a {
  padding: 0 26px 20px 54px;
  font-size: 15px;
  line-height: 1.88;
  color: var(--ink-soft);
}

.page-faq .qa-a p {
  margin: 0 0 12px;
  max-width: 64ch;
}

.page-faq .qa-a p:last-of-type {
  margin-bottom: 14px;
}

.page-faq .qa-a a:not(.qa-link) {
  color: var(--chalk);
  text-decoration: none;
  border-bottom: 1px solid var(--grass-2);
  padding-bottom: 1px;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa-a a:not(.qa-link):hover {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

.page-faq .term {
  display: inline-block;
  padding: 1px 8px;
  border: 1px solid var(--grid);
  border-left: 3px solid var(--flare);
  background: rgba(31, 111, 74, .16);
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--chalk);
  white-space: nowrap;
}

.page-faq .qa-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--ink-dim);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px dashed var(--grid);
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .qa-link:hover {
  color: var(--flare);
  border-bottom-color: var(--flare);
}

/* ---------- 收尾 ---------- */

.page-faq .help-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, .85fr);
  gap: clamp(20px, 3vw, 40px);
  align-items: start;
}

.page-faq .help-copy {
  font-size: 15px;
  line-height: 1.9;
  color: var(--ink-soft);
}

.page-faq .help-copy p {
  margin: 0 0 14px;
  max-width: 58ch;
}

.page-faq .help-copy strong {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 600;
  color: var(--chalk);
  letter-spacing: .01em;
}

.page-faq .help-figure {
  margin: 0;
}

.page-faq .faq-strip {
  position: relative;
  margin-top: clamp(24px, 3vw, 38px);
  padding: 20px 24px;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  background: linear-gradient(96deg, rgba(31, 111, 74, .55) 0%, var(--night-2) 62%);
  border: 1px solid var(--grid);
  border-left: 4px solid var(--grass-2);
  overflow: hidden;
}

.page-faq .faq-strip::after {
  content: "";
  position: absolute;
  top: -1px;
  right: -1px;
  bottom: -1px;
  width: 74px;
  background: linear-gradient(120deg, rgba(255, 106, 19, 0), rgba(255, 106, 19, .22));
  pointer-events: none;
}

.page-faq .faq-strip-text {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
  color: var(--chalk);
  position: relative;
  z-index: 1;
}

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

/* ---------- 响应式 ---------- */

@media (max-width: 900px) {
  .page-faq .page-grid {
    grid-template-columns: minmax(0, 1fr);
    gap: 18px;
  }

  .page-faq .rail {
    position: static;
    padding: 8px 0 10px;
    border-bottom: 1px solid var(--hair);
  }

  .page-faq .rail-station {
    display: none;
  }

  .page-faq .rail-list {
    display: flex;
    gap: 4px;
    overflow-x: auto;
    padding-bottom: 4px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

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

  .page-faq .rail-list li {
    flex: 0 0 auto;
  }

  .page-faq .rail-link {
    grid-template-columns: auto auto;
    gap: 7px;
    white-space: nowrap;
    border-left: 0;
    border-bottom: 2px solid var(--grid);
    padding: 7px 12px;
  }

  .page-faq .rail-link[aria-current="true"] {
    border-bottom-color: var(--flare);
  }

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

@media (max-width: 760px) {
  .page-faq .faq-hero-facts {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-hero-facts li {
    border-right: 0;
    border-bottom: 1px solid var(--hair);
    padding: 14px 12px 12px 0;
  }

  .page-faq .faq-hero-facts li:not(:first-child) {
    padding-left: 0;
  }

  .page-faq .faq-hero-facts li:nth-child(2n) {
    padding-left: 14px;
    border-left: 1px solid var(--hair);
  }

  .page-faq .faq-hero-facts li:nth-last-child(-n+2) {
    border-bottom: 0;
  }

  .page-faq .qa-q {
    grid-template-columns: 32px minmax(0, 1fr) 16px;
    gap: 8px;
    padding-right: 4px;
  }

  .page-faq .qa-a {
    padding: 0 8px 18px 40px;
  }

  .page-faq .faq-strip {
    padding: 18px 16px;
  }
}

@media (max-width: 520px) {
  .page-faq .faq-hero h1 {
    max-width: none;
    font-size: clamp(26px, 8vw, 34px);
  }

  .page-faq .qa-a {
    padding-left: 4px;
    font-size: 14.5px;
  }

  .page-faq .term {
    white-space: normal;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .qa-q,
  .page-faq .qa-link,
  .page-faq .rail-link,
  .page-faq .legend-item {
    transition: none;
  }
}