.page-faq {
  --faq-shadow: 0 18px 48px rgba(5, 16, 13, 0.45);
  --faq-fast: 0.14s;
  display: block;
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-top {
  padding-top: calc(var(--header-h) + clamp(20px, 5vw, 64px));
  padding-bottom: clamp(32px, 5vw, 60px);
}

.page-faq .breadcrumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0 0 clamp(18px, 3vw, 30px);
  padding: 0;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-faq .breadcrumbs li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.page-faq .breadcrumbs li + li::before {
  content: "/";
  color: var(--c-grid);
}

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

.page-faq .breadcrumbs a:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 3.4vw, 44px) clamp(18px, 3vw, 44px) clamp(24px, 3.4vw, 46px);
  border: 1px solid var(--c-line);
  background:
    linear-gradient(180deg, rgba(49, 225, 196, 0.06) 0%, rgba(49, 225, 196, 0) 58%),
    var(--c-board);
  box-shadow: var(--faq-shadow);
}

.page-faq .faq-hero::before,
.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--c-cyan);
  pointer-events: none;
}

.page-faq .faq-hero::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-faq .faq-hero::after {
  right: -1px;
  bottom: -1px;
  border-top: 0;
  border-left: 0;
}

.page-faq .faq-hero .eyebrow {
  display: inline-block;
  margin: 0;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--c-cyan);
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

.page-faq .faq-hero h1 {
  margin: 16px 0 18px;
  font-family: var(--f-display);
  font-size: clamp(34px, 6.6vw, 76px);
  font-weight: 700;
  line-height: 0.98;
  letter-spacing: -0.02em;
  color: var(--c-paper);
  text-wrap: balance;
}

.page-faq .faq-hero .lede {
  max-width: 46ch;
  margin: 0 0 clamp(22px, 3vw, 34px);
  font-size: clamp(15px, 1.5vw, 17px);
  line-height: 1.78;
  color: rgba(242, 246, 244, 0.82);
}

.page-faq .faq-meta {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 14px 20px;
  margin: 0;
  padding-top: 20px;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-meta dt {
  margin: 0 0 6px;
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--c-mist);
}

.page-faq .faq-meta dd {
  margin: 0;
  font-family: var(--f-mono);
  font-size: clamp(15px, 1.8vw, 21px);
  letter-spacing: 0.02em;
  color: var(--c-orange);
}

/* ---------- 章节通用 ---------- */
.page-faq .section-head h2 {
  margin: 12px 0 14px;
  color: var(--c-paper);
}

.page-faq .section-head .section-note {
  max-width: 58ch;
  margin: 0;
  font-size: 15.5px;
  line-height: 1.76;
  color: var(--c-mist);
}

.page-faq .idx {
  margin: 0;
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.16em;
  color: var(--c-cyan);
}

/* ---------- 图片框 ---------- */
.page-faq .faq-figure {
  position: relative;
  margin: clamp(26px, 4vw, 44px) 0 0;
  border: 1px solid var(--c-line);
  background: var(--c-deep);
  overflow: hidden;
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--c-line);
  font-family: var(--f-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--c-dim);
}

/* ---------- 版本时间轴 ---------- */
.page-faq .faq-updates {
  border-top: 1px solid var(--c-line);
  border-bottom: 1px solid var(--c-line);
  background:
    linear-gradient(180deg, rgba(15, 58, 47, 0.5) 0%, rgba(8, 33, 27, 0) 42%),
    var(--c-ink);
}

.page-faq .tl {
  position: relative;
  max-width: 78ch;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: 0 0 0 24px;
  list-style: none;
}

.page-faq .tl::before {
  content: "";
  position: absolute;
  left: 8px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--c-cyan) 0%, var(--c-grid) 16%, var(--c-grid) 84%, rgba(28, 85, 72, 0) 100%);
}

.page-faq .tl-item {
  position: relative;
  padding-bottom: clamp(24px, 3vw, 36px);
}

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

.page-faq .tl-item::before {
  content: "";
  position: absolute;
  left: -20px;
  top: 6px;
  width: 9px;
  height: 9px;
  background: var(--c-ink);
  border: 1px solid var(--c-cyan);
}

.page-faq .tl-item:first-child::before {
  background: var(--c-orange);
  border-color: var(--c-orange);
  box-shadow: 0 0 0 5px var(--c-orange-soft);
}

.page-faq .tl-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 6px 14px;
  margin: 0 0 8px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
}

.page-faq .tl-ver {
  color: var(--c-cyan);
}

.page-faq .tl-when {
  color: var(--c-dim);
}

.page-faq .tl-count {
  color: var(--c-orange);
}

.page-faq .tl-title {
  margin: 0 0 8px;
  font-size: clamp(17px, 1.9vw, 21px);
  font-weight: 700;
  line-height: 1.4;
  color: var(--c-paper);
}

.page-faq .tl-desc {
  max-width: 54ch;
  margin: 0 0 12px;
  font-size: 15px;
  line-height: 1.74;
  color: var(--c-mist);
}

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

.page-faq .tl-points li {
  padding: 4px 10px;
  border: 1px solid var(--c-line);
  border-radius: var(--r-sm);
  font-family: var(--f-mono);
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--c-cyan);
}

/* ---------- 入口路径（反色区块） ---------- */
.page-faq .faq-paths {
  padding: clamp(48px, 7vw, 92px) 0;
  background: var(--c-paper);
  color: var(--c-ink);
}

.page-faq .faq-paths .section-head h2 {
  color: var(--c-ink);
}

.page-faq .faq-paths .section-head .section-note {
  color: #3d5c54;
}

.page-faq .faq-paths .idx {
  color: #0f3a2f;
}

.page-faq .faq-figure--light {
  border-color: rgba(8, 33, 27, 0.16);
  background: #e4ebe7;
}

.page-faq .faq-figure--light figcaption {
  border-top-color: rgba(8, 33, 27, 0.14);
  color: #4a6a61;
}

.page-faq .path-list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 18px;
  margin: clamp(28px, 4vw, 42px) 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .path-step {
  position: relative;
  padding: 26px 22px 24px;
  background: rgba(255, 255, 255, 0.62);
  border: 1px solid rgba(8, 33, 27, 0.14);
  border-top: 3px solid var(--c-board);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .path-step:last-child {
  border-top-color: var(--c-orange);
}

.page-faq .path-step:hover {
  transform: translateY(-3px);
}

.page-faq .path-no {
  display: block;
  margin-bottom: 12px;
  font-family: var(--f-mono);
  font-size: 30px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: rgba(8, 33, 27, 0.22);
}

.page-faq .path-step h3 {
  margin: 0 0 10px;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.35;
  color: var(--c-ink);
}

.page-faq .path-step p {
  margin: 0;
  font-size: 15px;
  line-height: 1.72;
  color: #33544b;
}

.page-faq .path-link {
  display: inline-block;
  margin-top: 16px;
  padding-bottom: 2px;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--c-ink);
  text-decoration: none;
  border-bottom: 1px solid var(--c-orange);
  transition: color var(--dur) var(--ease);
}

.page-faq .path-link:hover {
  color: #0f3a2f;
}

/* ---------- 问答标签页 ---------- */
.page-faq .faq-qa {
  background: var(--c-ink);
}

.page-faq .tabs-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0;
  margin: clamp(24px, 3vw, 34px) 0 0;
  padding: 0;
  border-bottom: 1px solid var(--c-line);
}

.page-faq .tab {
  appearance: none;
  margin-bottom: -1px;
  padding: 12px clamp(14px, 2vw, 24px);
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  font-family: var(--f-body);
  font-size: clamp(14px, 1.5vw, 16px);
  font-weight: 600;
  letter-spacing: 0.02em;
  color: var(--c-mist);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease);
}

.page-faq .tab:hover {
  color: var(--c-paper);
}

.page-faq .tab[aria-selected="true"] {
  color: var(--c-paper);
  border-bottom-color: var(--c-cyan);
}

.page-faq .tab:focus-visible,
.page-faq .path-link:focus-visible,
.page-faq .faq-help a:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 2px;
  border-radius: var(--r-sm);
  box-shadow: 0 0 0 4px var(--c-cyan-soft);
}

.page-faq .tab-panel {
  padding: clamp(22px, 3vw, 34px) 0 0;
}

.page-faq .tab-panel[hidden] {
  display: none;
}

.page-faq .tab-panel:focus-visible {
  outline: 1px dashed var(--c-grid);
  outline-offset: 8px;
}

.page-faq .qa-item {
  padding: clamp(20px, 2.6vw, 28px) 0;
  border-top: 1px solid var(--c-line-soft);
}

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

.page-faq .qa-q {
  position: relative;
  margin: 0 0 10px;
  padding-left: 26px;
  font-size: clamp(16px, 1.7vw, 19px);
  font-weight: 700;
  line-height: 1.5;
  color: var(--c-paper);
}

.page-faq .qa-q::before {
  content: "Q";
  position: absolute;
  left: 0;
  top: 0.2em;
  font-family: var(--f-mono);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--c-orange);
}

.page-faq .qa-a {
  max-width: 64ch;
  margin: 0;
  padding-left: 26px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--c-mist);
}

/* ---------- 联系引导 ---------- */
.page-faq .faq-help {
  padding: clamp(48px, 7vw, 92px) 0 clamp(56px, 8vw, 108px);
  background: var(--c-ink);
}

.page-faq .help-card {
  position: relative;
  padding: clamp(26px, 4vw, 54px);
  border: 1px solid var(--c-line);
  background:
    linear-gradient(135deg, rgba(49, 225, 196, 0.08) 0%, rgba(49, 225, 196, 0) 48%),
    var(--c-board);
  overflow: hidden;
}

.page-faq .help-card::after {
  content: "";
  position: absolute;
  top: -46px;
  right: -46px;
  width: 190px;
  height: 190px;
  border: 1px solid var(--c-line);
  transform: rotate(45deg);
  pointer-events: none;
}

.page-faq .help-card h2 {
  position: relative;
  margin: 14px 0 16px;
  color: var(--c-paper);
}

.page-faq .help-card .help-lead {
  position: relative;
  max-width: 56ch;
  margin: 0 0 26px;
  font-size: 16px;
  line-height: 1.76;
  color: var(--c-mist);
}

.page-faq .help-actions {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.page-faq .help-note {
  position: relative;
  margin: 24px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--c-dim);
}

.page-faq .help-note a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .path-list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 20px;
  }
}

@media (min-width: 880px) {
  .page-faq .faq-hero {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 260px);
    gap: clamp(24px, 4vw, 56px);
    align-items: end;
  }

  .page-faq .faq-hero .eyebrow,
  .page-faq .faq-hero h1,
  .page-faq .faq-hero .lede {
    grid-column: 1;
  }

  .page-faq .faq-hero .faq-meta {
    grid-column: 2;
    grid-row: 1 / span 3;
    align-self: end;
    grid-template-columns: minmax(0, 1fr);
    padding-top: 0;
    padding-left: clamp(16px, 2vw, 28px);
    border-top: 0;
    border-left: 1px solid var(--c-line);
  }

  .page-faq .section-head {
    display: grid;
    grid-template-columns: minmax(0, 190px) minmax(0, 1fr);
    gap: 0 clamp(24px, 4vw, 56px);
    align-items: start;
  }

  .page-faq .section-head .idx {
    grid-column: 1;
    padding-top: 0.55em;
  }

  .page-faq .section-head h2 {
    grid-column: 2;
    margin-top: 0;
  }

  .page-faq .section-head .section-note {
    grid-column: 2;
  }

  .page-faq .tl {
    padding-left: 34px;
  }

  .page-faq .tl::before {
    left: 10px;
  }

  .page-faq .tl-item::before {
    left: -30px;
  }
}

@media (min-width: 1100px) {
  .page-faq .faq-figure {
    margin-top: clamp(32px, 4vw, 52px);
  }

  .page-faq .tl {
    max-width: 82ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .path-step,
  .page-faq .tab,
  .page-faq .path-link {
    transition: none;
  }

  .page-faq .path-step:hover {
    transform: none;
  }
}