.page-faq {
  --faq-fold-line: var(--c-line);
  display: block;
  background: var(--c-asphalt);
  color: var(--c-white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(16px, 3vw, 30px) clamp(30px, 5vw, 62px);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(90deg, var(--c-line) 0 1px, transparent 1px 96px);
  opacity: .32;
  pointer-events: none;
}

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

.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(20px, 3.4vw, 44px);
  margin-top: clamp(18px, 3vw, 40px);
}

.page-faq .faq-hero__kicker {
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: .18em;
  color: var(--c-neon);
  margin: 0 0 clamp(8px, 1.4vw, 16px);
}

.page-faq .faq-hero__title {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(42px, 12vw, 128px);
  line-height: .92;
  letter-spacing: -.02em;
  margin: 0;
}

.page-faq .faq-hero__title em {
  font-style: normal;
  display: inline-block;
  transform: skewX(-6deg);
  color: var(--c-neon);
}

.page-faq .faq-hero__lead {
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 48ch;
  font-size: clamp(15px, 1.2vw, 17px);
  line-height: 1.58;
  color: var(--c-white);
}

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

.page-faq .faq-stat {
  display: grid;
  gap: 4px;
  align-content: start;
  padding: 10px 12px;
  background: var(--c-graphite);
}

.page-faq .faq-stat__v {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: clamp(17px, 2vw, 23px);
  line-height: 1.1;
  color: var(--c-neon);
}

.page-faq .faq-stat__l {
  font-size: 12px;
  line-height: 1.45;
  color: var(--c-muted);
}

/* ---------- 目录带 ---------- */
.page-faq .faq-toc {
  position: sticky;
  top: var(--header-h);
  z-index: 30;
  background: var(--c-asphalt);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-toc__list {
  display: flex;
  gap: clamp(6px, 1.4vw, 16px);
  list-style: none;
  margin: 0;
  padding: 9px 0;
  overflow-x: auto;
  scrollbar-width: none;
  -webkit-overflow-scrolling: touch;
}

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

.page-faq .faq-toc__item {
  flex: 0 0 auto;
}

.page-faq .faq-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 6px;
  padding: 5px 10px;
  border: 1px solid transparent;
  font-size: 13px;
  line-height: 1.3;
  color: var(--c-muted);
  text-decoration: none;
  white-space: nowrap;
  transition: color .22s var(--ease), border-color .22s var(--ease), background-color .22s var(--ease);
}

.page-faq .faq-toc__link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-neon-deep);
}

.page-faq .faq-toc__link:hover,
.page-faq .faq-toc__link:focus-visible {
  color: var(--c-white);
  border-color: var(--c-line);
}

.page-faq .faq-toc__link[aria-current="true"] {
  background: var(--c-neon);
  border-color: var(--c-neon);
  color: var(--c-asphalt);
  font-weight: 700;
}

.page-faq .faq-toc__link[aria-current="true"] .mono {
  color: var(--c-asphalt);
}

/* ---------- 章节骨架 ---------- */
.page-faq .faq-sec {
  padding-block: clamp(32px, 5.6vw, 72px);
  border-bottom: 1px solid var(--c-line);
  scroll-margin-top: calc(var(--header-h) + 58px);
}

.page-faq .faq-sec__head {
  display: grid;
  gap: 8px;
  margin-bottom: clamp(20px, 3.4vw, 40px);
  padding-left: clamp(0px, 2vw, 44px);
}

.page-faq .faq-sec__num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(30px, 6vw, 62px);
  line-height: .9;
  letter-spacing: .02em;
  color: transparent;
  -webkit-text-stroke: 1px var(--c-neon-deep);
}

.page-faq .faq-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(26px, 4vw, 46px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--c-white);
}

.page-faq .faq-sec__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-muted);
}

/* ---------- 路径切换 ---------- */
.page-faq .faq-paths__wrap {
  display: grid;
  gap: clamp(22px, 3.4vw, 40px);
}

.page-faq .faq-paths__radio {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

.page-faq .faq-paths__tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
  margin-bottom: clamp(14px, 2.2vw, 24px);
}

.page-faq .faq-paths__radio:focus-visible ~ .faq-paths__tabs {
  outline: 2px solid var(--c-neon);
  outline-offset: 2px;
}

.page-faq .faq-paths__tab {
  flex: 1 1 150px;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 11px 12px;
  background: var(--c-graphite);
  color: var(--c-muted);
  font-size: 13px;
  line-height: 1.35;
  cursor: pointer;
  transition: background-color .24s var(--ease), color .24s var(--ease);
}

.page-faq .faq-paths__tab .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-neon-deep);
}

.page-faq .faq-paths__tab:hover {
  color: var(--c-white);
}

.page-faq #faq-path-a:checked ~ .faq-paths__tabs label[for="faq-path-a"],
.page-faq #faq-path-b:checked ~ .faq-paths__tabs label[for="faq-path-b"],
.page-faq #faq-path-c:checked ~ .faq-paths__tabs label[for="faq-path-c"] {
  background: var(--c-neon);
  color: var(--c-asphalt);
  font-weight: 700;
}

.page-faq #faq-path-a:checked ~ .faq-paths__tabs label[for="faq-path-a"] .mono,
.page-faq #faq-path-b:checked ~ .faq-paths__tabs label[for="faq-path-b"] .mono,
.page-faq #faq-path-c:checked ~ .faq-paths__tabs label[for="faq-path-c"] .mono {
  color: var(--c-asphalt);
}

.page-faq .faq-paths__panel {
  display: none;
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--c-graphite);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-neon);
}

.page-faq #faq-path-a:checked ~ .faq-paths__panels > #faq-panel-a,
.page-faq #faq-path-b:checked ~ .faq-paths__panels > #faq-panel-b,
.page-faq #faq-path-c:checked ~ .faq-paths__panels > #faq-panel-c {
  display: block;
}

.page-faq .faq-paths__meta {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-neon-deep);
}

.page-faq .faq-paths__ptitle {
  margin: 0 0 clamp(12px, 2vw, 18px);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(22px, 2.8vw, 32px);
  line-height: 1.1;
  color: var(--c-white);
}

.page-faq .faq-paths__hint {
  margin: 0 0 clamp(12px, 2vw, 18px);
  padding-left: 10px;
  border-left: 2px solid var(--c-neon-deep);
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-muted);
}

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

.page-faq .faq-paths__link .btn {
  text-decoration: none;
}

/* ---------- 步骤清单 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0 0 clamp(14px, 2vw, 20px);
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 10px;
  align-items: start;
}

.page-faq .faq-steps__num {
  display: inline-block;
  padding: 3px 7px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 700;
  line-height: 1.2;
  background: var(--c-neon);
  color: var(--c-asphalt);
  transform: skewX(-10deg);
}

.page-faq .faq-steps__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.58;
  color: var(--c-white);
}

.page-faq .faq-steps--wide {
  margin-bottom: clamp(20px, 3vw, 30px);
}

/* ---------- 图片 ---------- */
.page-faq .faq-figure {
  margin: 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 1px solid var(--c-line);
  object-fit: cover;
  background: var(--c-steel);
}

.page-faq .faq-figure--wide img {
  aspect-ratio: 2 / 1;
}

.page-faq .faq-figure__cap {
  display: block;
  margin-top: 9px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .06em;
  line-height: 1.5;
  color: var(--c-muted);
}

/* ---------- 中段节奏区 ---------- */
.page-faq .faq-break {
  padding-block: clamp(24px, 4vw, 52px);
  border-bottom: 1px solid var(--c-line);
  background: linear-gradient(180deg, var(--c-graphite), var(--c-asphalt));
}

/* ---------- 问答 ---------- */
.page-faq .qa {
  border-top: 1px solid var(--c-line);
}

.page-faq .qa__item {
  display: grid;
  gap: 10px;
  padding-block: clamp(16px, 2.6vw, 28px);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .qa__q {
  display: grid;
  gap: 6px;
  align-content: start;
}

.page-faq .qa__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--c-neon);
}

.page-faq .qa__title {
  margin: 0;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: clamp(16px, 1.7vw, 20px);
  line-height: 1.4;
  color: var(--c-white);
}

.page-faq .qa__concl {
  margin: 0 0 10px;
  padding-left: 10px;
  border-left: 2px solid var(--c-neon);
  font-size: 15px;
  line-height: 1.62;
  color: var(--c-paper);
}

/* ---------- 折叠 ---------- */
.page-faq .faq-fold {
  padding-top: 8px;
  border-top: 1px dashed var(--faq-fold-line);
}

.page-faq .faq-fold__summary {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  line-height: 1.5;
  color: var(--c-neon-deep);
  transition: color .22s var(--ease);
}

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

.page-faq .faq-fold__summary::after {
  content: "+";
  margin-left: auto;
  font-size: 15px;
  line-height: 1;
  color: var(--c-neon);
}

.page-faq .faq-fold[open] > .faq-fold__summary::after {
  content: "–";
}

.page-faq .faq-fold__summary:hover,
.page-faq .faq-fold__summary:focus-visible {
  color: var(--c-neon);
}

.page-faq .faq-fold__body {
  display: grid;
  gap: 8px;
  padding-top: 10px;
}

.page-faq .faq-fold__body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.62;
  color: var(--c-muted);
}

/* ---------- 指标表 ---------- */
.page-faq .fq-table {
  margin-bottom: clamp(20px, 3vw, 32px);
  border: 1px solid var(--c-line);
}

.page-faq .fq-table .data-table th[scope="row"] {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
  color: var(--c-neon);
}

.page-faq .fq-table .data-table caption {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--c-muted);
  padding: 10px 12px 0;
}

/* ---------- 同步状态 ---------- */
.page-faq .faq-sync {
  list-style: none;
  margin: 0 0 clamp(22px, 3.2vw, 34px);
  padding: 0;
  border-top: 1px solid var(--c-line);
}

.page-faq .faq-sync__item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2vw, 24px);
  align-items: start;
  padding-block: clamp(14px, 2vw, 20px);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .faq-sync__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.6;
  color: var(--c-paper);
}

/* ---------- 联系块 ---------- */
.page-faq .faq-contact {
  margin-top: clamp(20px, 3vw, 30px);
  padding: clamp(16px, 2.4vw, 26px);
  background: var(--c-graphite);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-neon);
}

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

.page-faq .faq-contact__mail {
  margin: 6px 0 10px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(16px, 2.2vw, 24px);
  line-height: 1.25;
  color: var(--c-neon);
  word-break: break-all;
}

.page-faq .faq-contact__note {
  margin: 0;
  max-width: 68ch;
  font-size: 13px;
  line-height: 1.66;
  color: var(--c-muted);
}

.page-faq .faq-note {
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  max-width: 74ch;
  font-size: 13px;
  line-height: 1.7;
  color: var(--c-muted);
}

/* ---------- 尾部分发 ---------- */
.page-faq .faq-sec--end {
  border-bottom: none;
}

.page-faq .faq-more__title {
  margin: 0 0 clamp(12px, 1.8vw, 18px);
  font-family: var(--font-mono);
  font-size: var(--fs-label);
  letter-spacing: .16em;
  color: var(--c-neon-deep);
}

.page-faq .faq-more__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .faq-more__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: clamp(14px, 2vw, 20px);
  background: var(--c-graphite);
  color: var(--c-white);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: background-color .24s var(--ease), color .24s var(--ease);
}

.page-faq .faq-more__link .mono {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--c-neon-deep);
}

.page-faq .faq-more__link:hover,
.page-faq .faq-more__link:focus-visible {
  background: var(--c-steel);
  color: var(--c-neon);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-more__list {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-faq .qa__item {
    grid-template-columns: minmax(0, 5fr) minmax(0, 7fr);
    column-gap: clamp(20px, 4vw, 56px);
  }

  .page-faq .faq-sec__head {
    grid-template-columns: auto minmax(0, 1fr);
    column-gap: clamp(16px, 3vw, 44px);
    align-items: start;
  }

  .page-faq .faq-sec__num {
    grid-row: 1 / span 3;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: end;
  }

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

@media (min-width: 1020px) {
  .page-faq .faq-paths__wrap {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    align-items: start;
  }
}

/* ---------- 降级动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-toc__link,
  .page-faq .faq-paths__tab,
  .page-faq .faq-fold__summary,
  .page-faq .faq-more__link {
    transition: none;
  }

  .page-faq .faq-hero__title em,
  .page-faq .faq-steps__num {
    transform: none;
  }
}