.page-faq {
  --faq-gap: clamp(1.25rem, 3vw, 2.5rem);
  --faq-rail: 268px;
  --faq-cut: polygon(
    var(--notch) 0,
    100% 0,
    100% calc(100% - var(--notch)),
    calc(100% - var(--notch)) 100%,
    0 100%,
    0 var(--notch)
  );
  background: var(--bg);
  color: var(--text);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  color: var(--text-dim);
}

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

.page-faq .breadcrumb a:hover {
  color: var(--mint-soft);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-soft);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: -10% -5% auto -5%;
  height: 130%;
  background:
    radial-gradient(52% 46% at 84% 8%, rgba(29, 233, 182, 0.18), transparent 70%),
    radial-gradient(46% 40% at 6% 92%, rgba(77, 163, 255, 0.14), transparent 72%);
  pointer-events: none;
}

.page-faq .faq-hero > .wrap {
  position: relative;
}

.page-faq .faq-hero__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: center;
}

.page-faq .faq-hero__copy h1 {
  margin: 0.6rem 0 1rem;
  font-size: clamp(2.5rem, 6vw, 4.2rem);
  line-height: 1.06;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-hero__copy .lede {
  max-width: 52ch;
  color: var(--text-dim);
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(1rem, 3vw, 2.4rem);
  margin: clamp(1.5rem, 3vw, 2.2rem) 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-hero__stats .stat {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-left: 0.85rem;
  border-left: 2px solid var(--line-strong);
}

.page-faq .faq-hero__stats .stat__value {
  font-family: var(--font-mono);
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1;
  color: var(--orange);
}

.page-faq .faq-hero__stats .stat__label {
  font-size: 0.85rem;
  color: var(--text-dim);
  letter-spacing: 0.04em;
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-hero__media {
  position: relative;
}

.page-faq .faq-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(200deg, rgba(11, 42, 34, 0) 45%, rgba(7, 17, 15, 0.62) 100%);
  pointer-events: none;
}

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

/* ---------- 上手路径 ---------- */
.page-faq .faq-path__flow {
  display: grid;
  gap: var(--faq-gap);
  margin-top: clamp(1.5rem, 3vw, 2.4rem);
}

.page-faq .faq-path__step {
  position: relative;
  padding: 1.7rem 1.35rem 1.5rem;
  background: linear-gradient(158deg, rgba(18, 61, 50, 0.94), rgba(11, 42, 34, 0.9));
  border: 1px solid var(--line);
  clip-path: var(--faq-cut);
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}

.page-faq .faq-path__step::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 48%;
  height: 3px;
  background: linear-gradient(90deg, var(--mint), var(--track) 60%, transparent);
}

.page-faq .faq-path__step:hover {
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.page-faq .faq-path__no {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--mint);
  letter-spacing: 0.12em;
}

.page-faq .faq-path__step h3 {
  margin: 0.55rem 0 0.6rem;
  font-size: 1.25rem;
  font-weight: 800;
  line-height: 1.25;
}

.page-faq .faq-path__step p {
  margin: 0;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.8;
}

.page-faq .faq-path__link {
  display: inline-block;
  margin-top: 0.9rem;
  color: var(--mint);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
}

.page-faq .faq-path__link:hover {
  color: var(--mint-soft);
  border-bottom-style: solid;
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-body__grid {
  display: grid;
  gap: var(--faq-gap);
  align-items: start;
}

.page-faq .faq-rail {
  display: grid;
  gap: clamp(1rem, 2.5vw, 1.6rem);
}

.page-faq .faq-index {
  padding: 1.25rem 1.15rem;
  background: rgba(14, 53, 41, 0.72);
  border: 1px solid var(--line);
  border-top: 3px solid var(--mint);
}

.page-faq .faq-index__title {
  margin: 0 0 0.85rem;
  font-size: 0.8rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-dim);
}

.page-faq .faq-index__list {
  display: grid;
  gap: 0.3rem;
  margin: 0 0 0.9rem;
  padding: 0;
  list-style: none;
  counter-reset: none;
}

.page-faq .faq-index__list a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.55rem 0.6rem;
  color: var(--snow);
  font-size: 0.96rem;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-index__list a .num {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--mint);
}

.page-faq .faq-index__list a:hover,
.page-faq .faq-index__list a:focus-visible {
  background: rgba(29, 233, 182, 0.1);
  border-left-color: var(--mint);
  color: var(--mint-soft);
  outline: none;
}

.page-faq .faq-index .note {
  margin: 0;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--gray);
}

.page-faq .faq-rail__media {
  position: relative;
}

/* ---------- 问答分类 ---------- */
.page-faq .faq-cats {
  display: grid;
  gap: clamp(2.2rem, 5vw, 3.4rem);
}

.page-faq .faq-cat {
  scroll-margin-top: calc(var(--header-h) + 1.5rem);
}

.page-faq .faq-cat__head {
  display: flex;
  align-items: baseline;
  gap: 0.9rem;
  flex-wrap: wrap;
  margin-bottom: 1.1rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px dashed var(--line);
}

.page-faq .faq-cat__head h2 {
  margin: 0;
  font-size: clamp(1.45rem, 2.6vw, 1.95rem);
  font-weight: 800;
  line-height: 1.2;
}

.page-faq .faq-cat__count {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  color: var(--mint);
  padding: 0.2rem 0.5rem;
  border: 1px solid var(--line-strong);
}

.page-faq .faq-list {
  display: grid;
  gap: 0.7rem;
}

.page-faq .faq-item {
  position: relative;
  background: linear-gradient(158deg, rgba(18, 61, 50, 0.9), rgba(11, 42, 34, 0.92));
  border: 1px solid var(--line);
  clip-path: var(--faq-cut);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}

.page-faq .faq-item:hover {
  border-color: var(--line-strong);
}

.page-faq .faq-item[open] {
  background: linear-gradient(158deg, rgba(29, 233, 182, 0.12), rgba(14, 53, 41, 0.96));
  border-color: var(--line-strong);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: 2.2rem minmax(0, 1fr) 1.4rem;
  gap: 0.7rem;
  align-items: start;
  padding: 1.05rem 1.25rem;
  cursor: pointer;
  list-style: none;
  font-size: 1.04rem;
  font-weight: 700;
  line-height: 1.6;
  transition: color 0.2s var(--ease);
}

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

.page-faq .faq-q:hover {
  color: var(--mint-soft);
}

.page-faq .faq-q:focus-visible {
  outline: none;
  box-shadow: inset 0 0 0 2px var(--mint);
}

.page-faq .faq-q__num {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--mint);
  padding-top: 0.32rem;
}

.page-faq .faq-q__sign {
  position: relative;
  width: 1.1rem;
  height: 1.1rem;
  margin-top: 0.35rem;
  justify-self: end;
}

.page-faq .faq-q__sign::before,
.page-faq .faq-q__sign::after {
  content: "";
  position: absolute;
  background: var(--mint);
  transition: transform 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-q__sign::before {
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .faq-q__sign::after {
  left: 50%;
  top: 0;
  width: 2px;
  height: 100%;
  transform: translateX(-50%);
}

.page-faq .faq-item[open] .faq-q__sign::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .faq-item[open] .faq-q__sign::before {
  background: var(--orange);
}

.page-faq .faq-a {
  padding: 0 1.25rem 1.3rem 4.15rem;
  color: var(--text-dim);
  font-size: 1rem;
  line-height: 1.85;
}

.page-faq .faq-a p {
  margin: 0;
}

.page-faq .faq-a p + p {
  margin-top: 0.6rem;
}

.page-faq .faq-a__more a {
  color: var(--mint);
  font-size: 0.9rem;
  text-decoration: none;
  border-bottom: 1px dashed var(--line-strong);
}

.page-faq .faq-a__more a:hover {
  color: var(--mint-soft);
  border-bottom-style: solid;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-path__flow {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

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

@media (min-width: 980px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  }

  .page-faq .faq-body__grid {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1rem);
    z-index: 2;
  }

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

@media (max-width: 719px) {
  .page-faq .faq-q {
    grid-template-columns: 1.8rem minmax(0, 1fr) 1.2rem;
    gap: 0.5rem;
    padding: 0.95rem 1rem;
    font-size: 0.98rem;
  }

  .page-faq .faq-a {
    padding: 0 1rem 1.1rem 3.35rem;
    font-size: 0.95rem;
  }

  .page-faq .faq-hero__stats .stat__value {
    font-size: 1.75rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-path__step,
  .page-faq .faq-item,
  .page-faq .faq-q,
  .page-faq .faq-q__sign::before,
  .page-faq .faq-q__sign::after {
    transition: none;
  }

  .page-faq .faq-path__step:hover {
    transform: none;
  }
}