.page-faq {
  --faq-index-w: 250px;
  --faq-ink: rgba(233, 241, 247, 0.78);
  --faq-ink-dim: rgba(233, 241, 247, 0.72);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  padding: 18px 0 0;
  font-size: 12px;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 26px 0 44px;
  overflow: hidden;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    repeating-linear-gradient(0deg, rgba(53, 242, 160, 0.04) 0 1px, transparent 1px 24px),
    radial-gradient(120% 90% at 90% 0%, rgba(43, 224, 208, 0.16), transparent 62%),
    radial-gradient(80% 70% at 6% 100%, rgba(53, 242, 160, 0.09), transparent 70%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  display: grid;
  gap: 30px;
}

.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan);
  text-transform: uppercase;
}

.page-faq .faq-hero__title {
  margin: 0 0 18px;
  font-size: clamp(28px, 7.4vw, 50px);
  line-height: 1.1;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: 40em;
  font-size: 15px;
  line-height: 1.85;
  color: var(--faq-ink);
}

.page-faq .faq-hero__stats {
  display: grid;
  gap: 14px;
}

.page-faq .faq-metric {
  padding: 18px 20px 20px;
}

.page-faq .faq-metric .stat-score {
  display: flex;
  align-items: baseline;
  margin: 8px 0 6px;
}

.page-faq .stat-score__value {
  font-family: var(--mono);
  font-size: clamp(38px, 11vw, 54px);
  font-weight: 700;
  line-height: 1;
  color: var(--green);
  font-variant-numeric: tabular-nums;
}

.page-faq .stat-score__unit {
  margin-left: 6px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--mist);
}

.page-faq .faq-metric--cyan .stat-score__value {
  color: var(--cyan);
}

.page-faq .faq-metric__note {
  margin: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--mist);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 10px 0 72px;
}

.page-faq .faq-layout {
  display: grid;
  gap: 34px;
}

/* 分类索引 */
.page-faq .faq-index {
  padding: 16px 16px 18px;
  background: var(--stand);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-faq .faq-index__title {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--mist);
}

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 12px;
  border-left: 2px solid transparent;
  color: var(--faq-ink-dim);
  font-size: 14px;
  line-height: 1.5;
  text-decoration: none;
  transition: color 0.18s ease, border-color 0.18s ease, background-color 0.18s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link[data-active],
.page-faq .faq-index__link.is-active {
  color: var(--green);
  border-left-color: var(--green);
  background: rgba(53, 242, 160, 0.07);
}

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

.page-faq .faq-index__link:hover .faq-index__idx,
.page-faq .faq-index__link[data-active] .faq-index__idx,
.page-faq .faq-index__link.is-active .faq-index__idx {
  color: var(--green);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  scroll-margin-top: 76px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 52px;
}

.page-faq .faq-group .chapter-head {
  margin-bottom: 16px;
}

.page-faq .faq-group__media {
  display: grid;
  gap: 26px;
}

/* ---------- 三步流程 ---------- */
.page-faq .faq-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-step {
  position: relative;
  display: grid;
  grid-template-columns: 40px minmax(0, 1fr);
  gap: 16px;
  padding-bottom: 26px;
}

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

.page-faq .faq-step::before {
  content: "";
  position: absolute;
  left: 19px;
  top: 46px;
  bottom: 6px;
  width: 1px;
  background: linear-gradient(180deg, var(--line), rgba(34, 49, 76, 0));
}

.page-faq .faq-step:last-child::before {
  content: none;
}

.page-faq .faq-step__num {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(53, 242, 160, 0.45);
  background: var(--deep-green);
  color: var(--green);
  font-family: var(--mono);
  font-size: 16px;
  font-weight: 700;
}

.page-faq .faq-step__text h3 {
  margin: 8px 0 8px;
  font-size: 16.5px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .faq-step__text p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--faq-ink);
}

/* ---------- 问答条目 ---------- */
.page-faq .faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

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

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 0;
  list-style: none;
  cursor: pointer;
  font-size: 15.5px;
  font-weight: 700;
  line-height: 1.6;
  color: var(--white);
  transition: color 0.18s ease;
}

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

.page-faq .faq-item__q:hover,
.page-faq .faq-item[open] .faq-item__q {
  color: var(--green);
}

.page-faq .faq-item__num {
  flex: none;
  min-width: 22px;
  padding-top: 4px;
  font-family: var(--mono);
  font-size: 11px;
  font-weight: 400;
  color: var(--mist);
}

.page-faq .faq-item__mark {
  flex: none;
  margin-left: auto;
  padding-top: 1px;
  font-family: var(--mono);
  font-size: 15px;
  color: var(--green);
}

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

.page-faq .faq-item[open] .faq-item__mark::before {
  content: "\2212";
}

.page-faq .faq-item__a {
  padding: 16px 0 20px 22px;
  border-top: 1px solid rgba(43, 224, 208, 0.55);
  font-size: 14.5px;
  line-height: 1.85;
  color: var(--faq-ink);
}

.page-faq .faq-item__a p {
  margin: 0 0 10px;
}

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

.page-faq .faq-item__a a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 224, 208, 0.4);
}

.page-faq .faq-item__a a:hover {
  color: var(--green);
  border-bottom-color: var(--green);
}

/* ---------- 配图 ---------- */
.page-faq .faq-figure {
  margin: 0;
  max-width: 420px;
}

.page-faq .faq-figure .media-frame__img {
  max-width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .faq-figure .media-frame__caption {
  font-size: 12px;
}

/* ---------- 术语卡 ---------- */
.page-faq .faq-terms {
  display: grid;
  gap: 14px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-term {
  padding: 16px 18px 18px;
  background: var(--stand);
  border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-faq .faq-term__key {
  display: block;
  margin: 0 0 8px;
  font-family: var(--mono);
  font-size: 15px;
  letter-spacing: 0.02em;
  color: var(--cyan);
}

.page-faq .faq-term__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.8;
  color: var(--faq-ink-dim);
}

/* ---------- 末段行动区 ---------- */
.page-faq .faq-cta {
  padding: 24px 22px 26px 24px;
  background:
    linear-gradient(135deg, rgba(53, 242, 160, 0.1), rgba(11, 18, 32, 0) 58%),
    var(--stand);
  border: 1px solid var(--line);
  border-left: 3px solid var(--orange);
  clip-path: polygon(0 0, calc(100% - var(--cut)) 0, 100% var(--cut), 100% 100%, 0 100%);
}

.page-faq .faq-cta__title {
  margin: 0 0 10px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .faq-cta__text {
  margin: 0 0 20px;
  max-width: 44em;
  font-size: 14.5px;
  line-height: 1.82;
  color: var(--faq-ink);
}

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

/* ---------- 响应式 ---------- */
@media (min-width: 620px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 760px) {
  .page-faq .faq-hero {
    padding: 40px 0 56px;
  }

  .page-faq .faq-item__q {
    font-size: 16.5px;
  }

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

  .page-faq .faq-cta {
    padding: 30px 30px 32px 32px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 4fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-hero__stats {
    grid-template-columns: minmax(0, 1fr);
    padding-top: 46px;
  }

  .page-faq .faq-layout {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: 52px;
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-group--media .faq-group__media {
    grid-template-columns: minmax(0, 1fr) 300px;
    gap: 34px;
    align-items: start;
  }

  .page-faq .faq-terms {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-faq .faq-figure {
    max-width: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item__q {
    transition: none;
  }
}