.page-faq {
  padding: 28px 0 108px;
}

/* ---------- 面包屑下方的专题封面首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  isolation: isolate;
  padding: 40px 0 48px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -28px -22px -6px -22px;
  z-index: -1;
  border-radius: 40px;
  pointer-events: none;
  background:
    radial-gradient(900px 360px at 4% 0%, rgba(28, 107, 74, 0.40), transparent 62%),
    radial-gradient(700px 330px at 94% 10%, rgba(47, 169, 201, 0.17), transparent 66%);
}

.page-faq .faq-hero__title {
  margin: 14px 0 0;
  max-width: 20em;
  font-size: 30px;
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 46em;
  font-size: 17px;
  line-height: 1.8;
  color: var(--text);
}

.page-faq .faq-hero__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 34px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
}

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

.page-faq .faq-hero__num {
  font-size: 24px;
  font-weight: 600;
  color: var(--accent);
  line-height: 1;
}

.page-faq .faq-hero__lab {
  font-size: 14px;
  color: var(--muted);
}

/* ---------- 双栏：左侧分类轨道 + 右侧问答 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 34px;
  margin-top: 24px;
}

.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--muted);
  text-transform: uppercase;
}

.page-faq .faq-cats {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding: 2px 2px 10px;
  scrollbar-width: none;
}

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

.page-faq .faq-cat {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: rgba(18, 33, 54, 0.72);
  color: var(--text);
  font-size: 15px;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 0.26s var(--ease), background 0.26s var(--ease), color 0.26s var(--ease);
}

.page-faq .faq-cat:hover {
  border-color: rgba(57, 255, 158, 0.45);
  background: rgba(57, 255, 158, 0.08);
}

.page-faq .faq-cat__num {
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  color: var(--accent-2);
}

.page-faq .faq-rail__foot {
  margin-top: 26px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-800);
}

.page-faq .faq-rail__note {
  margin: 0 0 14px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* ---------- 问答章节 ---------- */
.page-faq .faq-section {
  scroll-margin-top: 24px;
}

.page-faq .faq-section + .faq-section {
  margin-top: 76px;
}

.page-faq .faq-section__head {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 8px 14px;
  padding-bottom: 16px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-section__num {
  font-family: var(--font-num);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.page-faq .faq-section__title {
  margin: 0;
  font-size: 24px;
  line-height: 1.3;
}

.page-faq .faq-section__note {
  margin: 0;
  flex: 1 1 100%;
  font-size: 14px;
  color: var(--muted);
}

.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .faq-figure img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
  border-radius: var(--radius-md);
}

.page-faq .faq-figure--wide img {
  width: 100%;
}

.page-faq .faq-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

/* ---------- 可展开问答组 ---------- */
.page-faq .fold-group {
  display: grid;
  gap: 12px;
}

.page-faq .fold {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: linear-gradient(158deg, rgba(27, 42, 71, 0.72), rgba(18, 33, 54, 0.88));
  overflow: hidden;
  transition: border-color 0.28s var(--ease), background 0.28s var(--ease);
}

.page-faq .fold:hover {
  border-color: rgba(237, 242, 247, 0.2);
}

.page-faq .fold[open] {
  border-color: rgba(57, 255, 158, 0.38);
  background: linear-gradient(158deg, rgba(27, 42, 71, 0.94), rgba(18, 33, 54, 0.97));
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 20px;
  font-size: 16.5px;
  font-weight: 600;
  line-height: 1.55;
  color: var(--text);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .fold__icon {
  position: relative;
  flex: 0 0 26px;
  width: 26px;
  height: 26px;
  border: 1px solid var(--line-strong);
  border-radius: 50%;
  transition: border-color 0.28s var(--ease), background 0.28s var(--ease), rotate 0.28s var(--ease);
}

.page-faq .fold__icon::before,
.page-faq .fold__icon::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  background: var(--muted);
  border-radius: 2px;
  transition: background 0.24s var(--ease), scale 0.24s var(--ease);
}

.page-faq .fold__icon::before {
  width: 11px;
  height: 2px;
}

.page-faq .fold__icon::after {
  width: 2px;
  height: 11px;
}

.page-faq .fold[open] .fold__icon {
  border-color: rgba(57, 255, 158, 0.5);
  background: rgba(57, 255, 158, 0.12);
  rotate: 180deg;
}

.page-faq .fold[open] .fold__icon::before,
.page-faq .fold[open] .fold__icon::after {
  background: var(--accent);
}

.page-faq .fold[open] .fold__icon::after {
  scale: 0 1;
}

.page-faq .fold__body {
  padding: 18px 20px 22px;
  margin: 0;
  border-top: 1px dashed var(--line);
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .fold[open] .fold__body {
  animation: faq-fold-in 0.26s var(--ease) both;
}

@keyframes faq-fold-in {
  from { opacity: 0; translate: 0 -6px; }
  to { opacity: 1; translate: 0 0; }
}

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

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

/* ---------- 步骤清单：等宽编号，操作手册感 ---------- */
.page-faq .faq-steps {
  counter-reset: faq-step;
  display: grid;
  gap: 10px;
  margin: 16px 0 16px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  position: relative;
  counter-increment: faq-step;
  padding-left: 44px;
  font-size: 15.5px;
  line-height: 1.72;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 2px;
  padding: 2px 7px;
  font-family: var(--font-num);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.5;
  color: var(--accent);
  background: rgba(57, 255, 158, 0.10);
  border: 1px solid rgba(57, 255, 158, 0.28);
  border-radius: 6px;
}

.page-faq .faq-more {
  margin: 14px 0 0;
  font-size: 15px;
}

/* ---------- 底部行动区 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 22px;
  margin-top: 84px;
  padding: 30px 24px;
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  background:
    linear-gradient(140deg, rgba(28, 107, 74, 0.38), rgba(27, 42, 71, 0.88) 55%, rgba(18, 33, 54, 0.96));
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-size: 22px;
  line-height: 1.35;
}

.page-faq .faq-cta__text p {
  margin: 0;
  font-size: 16px;
  line-height: 1.75;
  color: var(--muted);
}

.page-faq .faq-cta__actions {
  display: grid;
  gap: 12px;
}

/* ---------- 平板与桌面 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero__title {
    font-size: 40px;
  }

  .page-faq .faq-section__note {
    flex: 0 1 auto;
    margin-left: auto;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 40px 44px;
  }

  .page-faq .faq-cta__actions {
    grid-auto-flow: column;
    align-items: center;
  }
}

@media (min-width: 1000px) {
  .page-faq {
    padding-bottom: 132px;
  }

  .page-faq .faq-layout {
    grid-template-columns: 248px minmax(0, 1fr);
    gap: 60px;
    align-items: start;
    margin-top: 36px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 32px;
  }

  .page-faq .faq-cats {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding: 0;
  }

  .page-faq .faq-cat {
    position: relative;
    padding: 12px 14px;
    border-color: transparent;
    border-radius: var(--radius-sm);
    background: transparent;
    font-size: 16px;
  }

  .page-faq .faq-cat::before {
    content: "";
    position: absolute;
    left: -12px;
    top: 50%;
    translate: 0 -50%;
    width: 3px;
    height: 0;
    border-radius: 3px;
    background: var(--accent);
    box-shadow: 0 0 12px rgba(57, 255, 158, 0.6);
    transition: height 0.28s var(--ease);
  }

  .page-faq .faq-cat:hover {
    border-color: transparent;
    background: rgba(18, 33, 54, 0.72);
    color: var(--text);
  }

  .page-faq .faq-cat:hover::before {
    height: 58%;
  }

  .page-faq .faq-section + .faq-section {
    margin-top: 96px;
  }

  .page-faq .faq-section__title {
    font-size: 28px;
  }

  .page-faq .faq-q {
    padding: 20px 24px;
    font-size: 17.5px;
  }

  .page-faq .fold__body {
    padding: 20px 24px 26px;
  }
}

/* ---------- 窄屏防溢出 ---------- */
@media (max-width: 420px) {
  .page-faq .faq-hero__title {
    font-size: 26px;
  }

  .page-faq .faq-hero::before {
    inset: -20px -12px -4px -12px;
    border-radius: 28px;
  }

  .page-faq .faq-q {
    padding: 16px;
    font-size: 16px;
  }

  .page-faq .fold__body {
    padding: 16px;
    font-size: 15.5px;
  }
}