.page-faq {
  padding-bottom: 110px;
}

.page-faq .breadcrumbs {
  margin: 30px 0 22px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 30px;
  padding: 6px 0 50px;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
}

.page-faq .faq-hero h1 {
  margin: 0 0 18px;
  font-size: clamp(34px, 8.4vw, 66px);
  line-height: 1.04;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-hero__text {
  margin: 0 0 24px;
  max-width: 58ch;
  font-size: 15.5px;
  line-height: 1.68;
  color: var(--text-2);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stat {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 9px 16px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  background: linear-gradient(180deg, rgba(20, 40, 61, .92), rgba(11, 27, 43, .7));
}

.page-faq .faq-hero__stat b {
  font-family: var(--font-mono);
  font-size: 16px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-hero__stat span {
  font-size: 12px;
  color: var(--text-3);
}

.page-faq .faq-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--ink-2);
  box-shadow: var(--shadow-1);
}

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 1.08fr) minmax(0, .92fr);
    align-items: end;
    gap: 52px;
    padding: 18px 0 60px;
  }
  .page-faq .faq-hero__figure {
    margin-bottom: 6px;
  }
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 32px;
  padding-top: 44px;
}

.page-faq .faq-index {
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background: linear-gradient(180deg, rgba(20, 40, 61, .86), rgba(11, 27, 43, .55));
  padding: 18px 16px 16px;
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--text-3);
}

.page-faq .faq-index__list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 3px;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--text-2);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.4;
  transition: background .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease), transform .2s var(--ease);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-left-color: var(--cyan);
  background: rgba(53, 224, 208, .09);
  color: var(--paper);
  transform: translateX(2px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
}

.page-faq .faq-index__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-index__label {
  flex: 1;
  min-width: 0;
}

.page-faq .faq-index__count {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-3);
  flex: none;
}

.page-faq .faq-index__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line-soft);
  font-size: 12px;
  line-height: 1.55;
  color: var(--text-3);
}

@media (min-width: 1024px) {
  .page-faq .faq-body {
    grid-template-columns: 244px minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 132px;
  }
}

/* ---------- 分组 ---------- */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: var(--anchor-offset);
}

.page-faq .faq-group + .faq-group {
  margin-top: 54px;
  padding-top: 42px;
  border-top: 1px solid var(--line-soft);
}

.page-faq .faq-group--amber { --ga: var(--amber); }
.page-faq .faq-group--violet { --ga: var(--violet); }
.page-faq .faq-group--cyan { --ga: var(--cyan); }
.page-faq .faq-group--clay { --ga: var(--clay); }
.page-faq .faq-group--moss { --ga: var(--moss); }
.page-faq .faq-group--slate { --ga: var(--slate); }

.page-faq .faq-group__head {
  margin-bottom: 4px;
}

.page-faq .faq-group__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .18em;
  color: var(--ga, var(--cyan));
}

.page-faq .faq-group__title {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 10px;
  font-size: clamp(21px, 3.6vw, 29px);
  line-height: 1.24;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-group__title::before {
  content: "";
  flex: none;
  width: 4px;
  height: 22px;
  border-radius: 2px;
  background: var(--ga, var(--cyan));
}

.page-faq .faq-group__lede {
  margin: 0;
  max-width: 58ch;
  font-size: 14px;
  line-height: 1.62;
  color: var(--text-3);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin-top: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: rgba(20, 40, 61, .42);
  overflow: hidden;
}

.page-faq .faq-item {
  border-bottom: 1px solid var(--line-soft);
}

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

.page-faq .faq-item__q {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 44px 15px 16px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  line-height: 1.52;
  letter-spacing: -.005em;
  color: var(--paper);
  transition: background .2s var(--ease), color .2s var(--ease);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  position: absolute;
  right: 16px;
  top: 13px;
  font-family: var(--font-mono);
  font-size: 19px;
  line-height: 1;
  color: var(--ga, var(--cyan));
  transition: transform .25s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "−";
}

.page-faq .faq-item__q:hover {
  background: rgba(53, 224, 208, .06);
}

.page-faq .faq-item__q:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: -2px;
}

.page-faq .faq-item[open] .faq-item__q {
  background: rgba(53, 224, 208, .045);
}

.page-faq .faq-item__id {
  flex: none;
  padding-top: 4px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  color: var(--ga, var(--cyan));
}

.page-faq .faq-item__a {
  display: grid;
  gap: 10px;
  padding: 0 20px 20px 16px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-2);
}

.page-faq .faq-item__a p {
  margin: 0;
  max-width: 64ch;
}

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-item__a a:hover {
  color: var(--paper);
}

.page-faq .faq-item__hint {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 10px 12px;
  border-left: 2px solid var(--ga, var(--cyan));
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: rgba(124, 138, 154, .08);
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--text-3);
}

.page-faq .faq-item__hint .tag {
  flex: none;
}

@media (min-width: 720px) {
  .page-faq .faq-item__q {
    font-size: 15.5px;
    padding: 17px 48px 17px 20px;
  }
  .page-faq .faq-item__a {
    padding: 0 26px 22px 20px;
  }
  .page-faq .faq-item__q::after {
    right: 20px;
    top: 15px;
  }
}

/* ---------- 电脑端配图 ---------- */
.page-faq .faq-figure {
  margin: 22px 0 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--ink-2);
  box-shadow: var(--shadow-1);
}

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

.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-soft);
  background: rgba(6, 14, 23, .58);
  font-family: var(--font-mono);
  font-size: 11.5px;
  line-height: 1.5;
  letter-spacing: .02em;
  color: var(--text-3);
}

/* ---------- 术语表 ---------- */
.page-faq .faq-terms-wrap {
  margin-top: 22px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-faq .faq-terms {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  background: rgba(20, 40, 61, .4);
}

.page-faq .faq-terms th {
  padding: 11px 16px;
  text-align: left;
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: .12em;
  color: var(--text-3);
  background: rgba(6, 14, 23, .62);
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-terms td {
  padding: 13px 16px;
  vertical-align: top;
  font-size: 13.5px;
  line-height: 1.62;
  color: var(--text-2);
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-terms tbody tr {
  transition: background .18s var(--ease);
}

.page-faq .faq-terms tbody tr:hover {
  background: rgba(53, 224, 208, .07);
}

.page-faq .faq-terms tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .faq-terms td:first-child {
  white-space: nowrap;
  font-weight: 700;
  color: var(--paper);
}

.page-faq .faq-terms td:last-child {
  white-space: nowrap;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--cyan);
}

.page-faq .faq-terms__note {
  margin: 14px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--text-3);
}

.page-faq .faq-terms__note a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-terms__note a:hover {
  color: var(--paper);
}

/* ---------- 收尾 ---------- */
.page-faq .faq-closing {
  position: relative;
  margin-top: 58px;
  padding: 30px 24px 32px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--radius-lg);
  background:
    radial-gradient(120% 150% at 100% 0%, rgba(139, 107, 255, .18), transparent 58%),
    linear-gradient(180deg, rgba(20, 40, 61, .92), rgba(11, 27, 43, .78));
  overflow: hidden;
}

.page-faq .faq-closing__eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .16em;
  color: var(--amber);
}

.page-faq .faq-closing__title {
  margin: 0 0 12px;
  font-size: clamp(21px, 3.4vw, 28px);
  line-height: 1.28;
  letter-spacing: -.02em;
  font-weight: 800;
  color: var(--paper);
}

.page-faq .faq-closing__text {
  margin: 0 0 22px;
  max-width: 56ch;
  font-size: 14.5px;
  line-height: 1.68;
  color: var(--text-2);
}

.page-faq .faq-closing__text a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--line-cyan);
}

.page-faq .faq-closing__text a:hover {
  color: var(--paper);
}

.page-faq .faq-closing__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

@media (min-width: 720px) {
  .page-faq .faq-closing {
    padding: 38px 34px 40px;
  }
}

/* ---------- 返回顶部 ---------- */
.page-faq .faq-top {
  position: fixed;
  right: clamp(14px, 3vw, 30px);
  bottom: clamp(14px, 3vw, 30px);
  z-index: 40;
  display: inline-flex;
  align-items: center;
  padding: 10px 18px;
  border: 1px solid var(--line-cyan);
  border-radius: var(--pill);
  background: rgba(6, 14, 23, .88);
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .04em;
  text-decoration: none;
  box-shadow: var(--shadow-2);
  transition: transform .2s var(--ease), border-color .2s var(--ease), color .2s var(--ease);
}

.page-faq .faq-top:hover,
.page-faq .faq-top:focus-visible {
  transform: translateY(-3px);
  border-color: var(--cyan);
  color: var(--paper);
}

.page-faq .faq-top:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
}

@media (max-width: 480px) {
  .page-faq .faq-top {
    padding: 9px 14px;
    font-size: 11.5px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item__q,
  .page-faq .faq-item__q::after,
  .page-faq .faq-terms tbody tr,
  .page-faq .faq-top {
    transition: none;
  }
  .page-faq .faq-index__link:hover,
  .page-faq .faq-top:hover {
    transform: none;
  }
}