.page-faq {
  --faq-line: rgba(47, 243, 208, 0.20);
  --faq-node: rgba(255, 106, 42, 0.50);
  background:
    radial-gradient(110% 52% at 88% -8%, rgba(47, 243, 208, 0.10), transparent 62%),
    var(--ink);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.7;
  padding: 22px 0 64px;
}

.page-faq *,
.page-faq *::before,
.page-faq *::after {
  box-sizing: border-box;
}

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

.page-faq .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: rgba(247, 251, 248, 0.55);
}

.page-faq .breadcrumb a {
  color: var(--cyan-dim);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 首屏 ---------- */

.page-faq .faq-hero {
  position: relative;
  padding: 30px 0 8px;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background-image: repeating-linear-gradient(
    180deg,
    rgba(47, 243, 208, 0.055) 0 1px,
    transparent 1px 6px
  );
  opacity: 0.55;
}

.page-faq .faq-hero > * {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero .eyebrow {
  color: var(--orange-soft);
}

.page-faq .faq-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 7.4vw, 4.1rem);
  line-height: 1.04;
  letter-spacing: -0.025em;
  max-width: 22ch;
  color: var(--white);
}

.page-faq .faq-lede {
  margin: 20px 0 0;
  max-width: 62ch;
  font-size: 0.98rem;
  line-height: 1.8;
  color: rgba(247, 251, 248, 0.80);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 24px;
  margin-top: 26px;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line);
  font-size: 12px;
  letter-spacing: 0.07em;
  color: var(--muted);
}

.page-faq .faq-hero__meta b {
  color: var(--cyan);
  font-weight: 700;
}

/* ---------- 分类索引 ---------- */

.page-faq .faq-topics {
  display: grid;
  gap: 26px;
  margin-top: 40px;
}

.page-faq .faq-topics__title {
  margin: 0 0 16px;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--cyan-dim);
}

.page-faq .topic-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1px;
  overflow-x: auto;
  background: var(--faq-line);
  border: 1px solid var(--faq-line);
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
}

.page-faq .topic-list > li {
  flex: 0 0 78%;
  min-width: 0;
  scroll-snap-align: start;
  display: flex;
}

.page-faq .topic-list > li > .topic-card {
  flex: 1 1 auto;
}

.page-faq .topic-card {
  display: grid;
  grid-template-columns: auto 1fr;
  grid-template-rows: auto auto;
  gap: 2px 14px;
  padding: 16px 16px 18px;
  background: var(--ink-2);
  border-left: 2px solid transparent;
  color: inherit;
  text-decoration: none;
  transition: background 0.24s var(--ease), border-color 0.24s var(--ease), transform 0.24s var(--ease);
}

.page-faq .topic-card:hover,
.page-faq .topic-card:focus-visible {
  background: #0f3528;
  border-left-color: var(--cyan);
}

.page-faq .topic-card__num {
  grid-row: 1 / span 2;
  padding-top: 3px;
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--cyan);
}

.page-faq .topic-card__title {
  grid-column: 2;
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .topic-card__desc {
  grid-column: 2;
  margin: 2px 0 0;
  font-size: 12.5px;
  line-height: 1.6;
  color: var(--muted);
}

.page-faq .faq-topics__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  overflow: hidden;
}

/* ---------- 主题分组 ---------- */

.page-faq .topic-section {
  margin-top: 52px;
  scroll-margin-top: 24px;
}

.page-faq .topic-section__head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 3px 16px;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--faq-line);
  transition: border-color 0.24s var(--ease);
}

.page-faq .topic-section:target .topic-section__head {
  border-bottom-color: var(--cyan);
}

.page-faq .topic-section__num {
  grid-row: 1 / span 2;
  padding-top: 8px;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--cyan);
}

.page-faq .topic-section h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.35rem, 4.4vw, 1.95rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .topic-section__desc {
  margin: 6px 0 0;
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--muted);
}

/* ---------- 问答手风琴 ---------- */

.page-faq .qa-list {
  margin-top: 4px;
}

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

.page-faq .qa:first-child {
  border-top: 0;
}

.page-faq .qa > summary {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 14px;
  align-items: start;
  padding: 18px 0;
  cursor: pointer;
  list-style: none;
}

.page-faq .qa > summary::-webkit-details-marker {
  display: none;
}

.page-faq .qa > summary::marker {
  content: "";
}

.page-faq .qa h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.55;
  letter-spacing: 0.005em;
  color: var(--white);
  transition: color 0.2s var(--ease);
}

.page-faq .qa > summary:hover h3,
.page-faq .qa > summary:focus-visible h3 {
  color: var(--cyan);
}

.page-faq .qa > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 4px;
}

.page-faq .qa__mark {
  flex: none;
  width: 22px;
  height: 22px;
  display: grid;
  place-items: center;
  border: 1px solid var(--faq-line);
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1;
  color: var(--cyan);
  transition: transform 0.24s var(--ease), border-color 0.24s var(--ease), color 0.24s var(--ease);
}

.page-faq .qa[open] .qa__mark {
  transform: rotate(45deg);
  border-color: var(--orange);
  color: var(--orange);
}

.page-faq .qa__body {
  padding: 0 0 20px;
  max-width: 72ch;
}

.page-faq .qa__body p {
  margin: 0;
  font-size: 0.94rem;
  line-height: 1.8;
  color: rgba(247, 251, 248, 0.78);
}

/* ---------- 批次检索路径 ---------- */

.page-faq .batch-path {
  margin-top: 34px;
  padding: 24px 18px;
  border: 1px solid var(--faq-line);
  background: linear-gradient(160deg, rgba(12, 42, 32, 0.92), rgba(7, 26, 20, 0.98));
  display: grid;
  gap: 26px;
}

.page-faq .batch-path .eyebrow {
  margin: 0;
  color: var(--orange-soft);
}

.page-faq .batch-steps {
  list-style: none;
  margin: 18px 0 0;
  padding: 0 0 0 22px;
  border-left: 1px solid var(--faq-node);
  display: grid;
  gap: 22px;
}

.page-faq .batch-steps > li {
  position: relative;
  min-width: 0;
}

.page-faq .batch-steps > li::before {
  content: "";
  position: absolute;
  left: -27px;
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 106, 42, 0.16);
}

.page-faq .step-num {
  display: block;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--orange);
}

.page-faq .step-t {
  display: block;
  margin-top: 5px;
  font-size: 0.98rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--white);
}

.page-faq .batch-steps p {
  margin: 6px 0 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: rgba(247, 251, 248, 0.72);
}

.page-faq .batch-path__figure {
  margin: 0;
  border: 1px solid var(--faq-line);
  overflow: hidden;
}

/* ---------- 下一步 ---------- */

.page-faq .faq-next {
  margin-top: 56px;
  padding: 26px 20px;
  border: 1px solid var(--faq-line);
  background:
    linear-gradient(135deg, rgba(12, 42, 32, 0.95), rgba(7, 26, 20, 0.98));
  display: grid;
  gap: 24px;
}

.page-faq .faq-next .eyebrow {
  margin: 0;
  color: var(--cyan-dim);
}

.page-faq .faq-next h2 {
  margin: 10px 0 0;
  font-family: var(--font-display);
  font-size: clamp(1.4rem, 4.6vw, 2rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.015em;
  color: var(--white);
}

.page-faq .faq-next__body > p {
  margin: 12px 0 0;
  max-width: 52ch;
  font-size: 0.93rem;
  line-height: 1.8;
  color: rgba(247, 251, 248, 0.78);
}

.page-faq .faq-next__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

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

.page-faq .faq-next__links li {
  background: rgba(7, 26, 20, 0.9);
}

.page-faq .faq-next__links a {
  display: block;
  padding: 13px 14px;
  font-size: 0.88rem;
  color: var(--cyan-dim);
  text-decoration: none;
  transition: background 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-next__links a:hover,
.page-faq .faq-next__links a:focus-visible {
  background: rgba(47, 243, 208, 0.08);
  color: var(--cyan);
}

/* ---------- 断点 ---------- */

@media (min-width: 760px) {
  .page-faq {
    padding-bottom: 88px;
  }

  .page-faq .faq-hero {
    padding-top: 44px;
  }

  .page-faq .topic-list {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    overflow: visible;
  }

  .page-faq .topic-list > li {
    flex: none;
  }

  .page-faq .topic-list > li:last-child {
    grid-column: 1 / -1;
  }

  .page-faq .qa > summary {
    padding: 20px 0;
  }

  .page-faq .qa h3 {
    font-size: 1.05rem;
  }

  .page-faq .batch-path {
    padding: 30px 28px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-topics {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, 0.88fr);
    align-items: start;
    gap: 32px;
  }

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

  .page-faq .topic-list > li:last-child {
    grid-column: 1 / -1;
  }

  .page-faq .topic-section {
    margin-top: 64px;
  }

  .page-faq .topic-section__head {
    grid-template-columns: 56px minmax(0, 1fr);
    column-gap: 20px;
  }

  .page-faq .batch-path {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
    gap: 34px;
    padding: 34px 32px;
  }

  .page-faq .batch-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 26px;
    padding: 26px 0 0;
    border-left: 0;
    border-top: 1px solid var(--faq-node);
  }

  .page-faq .batch-steps > li::before {
    left: 0;
    top: -30px;
  }

  .page-faq .batch-steps p {
    font-size: 0.85rem;
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 34px;
    padding: 38px 36px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .topic-card,
  .page-faq .qa__mark,
  .page-faq .qa h3,
  .page-faq .faq-next__links a {
    transition: none;
  }

  .page-faq .qa[open] .qa__mark {
    transform: none;
    border-color: var(--orange);
    color: var(--orange);
  }
}