.page-faq {
  --faq-line: rgba(127, 232, 221, .16);
  --faq-line-strong: rgba(25, 227, 209, .46);
  --faq-body: rgba(251, 248, 242, .82);
  --faq-body-dim: rgba(251, 248, 242, .66);
  --faq-pad-x: clamp(.9rem, 2.6vw, 1.5rem);
  background: var(--ink);
  color: var(--paper-white);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: 0 0 clamp(1.8rem, 4.5vw, 3.2rem);
  border-bottom: 3px solid var(--cyan);
  background:
    repeating-linear-gradient(114deg, rgba(25, 227, 209, .055) 0 1px, transparent 1px 28px),
    radial-gradient(125% 95% at 88% -10%, rgba(25, 227, 209, .16), transparent 62%),
    var(--ink);
}

.page-faq .breadcrumbs {
  padding-top: 1rem;
  padding-bottom: .6rem;
}

.page-faq .faq-hero-inner {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding-top: clamp(1rem, 3vw, 2rem);
}

.page-faq .faq-hero-copy {
  min-width: 0;
}

.page-faq .faq-title {
  margin: .7rem 0 1rem;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.9rem, 7.2vw, 4.2rem);
  line-height: 1.04;
  letter-spacing: -.03em;
  color: var(--paper-white);
  text-wrap: balance;
}

.page-faq .faq-lead {
  margin: 0;
  max-width: 54ch;
  font-size: clamp(.95rem, 2.1vw, 1.06rem);
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-jump {
  display: flex;
  flex-wrap: wrap;
  gap: .55rem;
  margin-top: 1.5rem;
}

.page-faq .faq-jump-link {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  padding: .55rem .85rem;
  border: 2px solid var(--faq-line-strong);
  color: var(--cyan-soft);
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .04em;
  text-decoration: none;
  transition: background .18s ease, color .18s ease, border-color .18s ease;
}

.page-faq .faq-jump-link .num {
  color: var(--flame);
  font-size: .72rem;
}

.page-faq .faq-jump-link:hover,
.page-faq .faq-jump-link:focus-visible {
  background: var(--cyan);
  border-color: var(--cyan);
  color: var(--ink);
}

.page-faq .faq-jump-link:hover .num,
.page-faq .faq-jump-link:focus-visible .num {
  color: var(--ink-2);
}

.page-faq .faq-hero-figure {
  margin: 0;
  border: 3px solid var(--cyan);
  box-shadow: var(--shadow-cyan);
  background: var(--ink-2);
  min-width: 0;
}

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

.page-faq .faq-hero-figure figcaption {
  padding: .85rem var(--faq-pad-x) 1rem;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-stats {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem 1.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-stats li {
  display: flex;
  align-items: baseline;
  gap: .4rem;
}

.page-faq .faq-stat-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--flame);
  line-height: 1;
}

.page-faq .faq-stat-label {
  font-size: .74rem;
  letter-spacing: .05em;
  color: var(--steel);
}

/* ---------- 主体分栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  gap: clamp(1.6rem, 4vw, 3rem);
  padding: clamp(2rem, 5vw, 3.6rem) 0 clamp(3rem, 7vw, 5rem);
}

.page-faq .faq-index {
  min-width: 0;
  padding: 1.1rem 1.1rem 1.3rem;
  border-top: 3px solid var(--flame);
  background: var(--ink-2);
}

.page-faq .faq-index-list {
  margin: .9rem 0 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-index-list li + li {
  margin-top: 2px;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: baseline;
  gap: .7rem;
  padding: .55rem .4rem;
  border-left: 2px solid transparent;
  color: var(--cyan-soft);
  font-size: .9rem;
  text-decoration: none;
  transition: background .16s ease, color .16s ease, border-color .16s ease;
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .72rem;
  color: var(--flame);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  background: rgba(25, 227, 209, .12);
  border-left-color: var(--cyan);
  color: var(--paper-white);
}

.page-faq .faq-index-note {
  margin: 1rem 0 0;
  padding-top: .9rem;
  border-top: 1px solid var(--faq-line);
  font-size: .78rem;
  line-height: 1.7;
  color: var(--steel);
}

.page-faq .faq-index-top {
  display: inline-block;
  margin-top: .8rem;
  font-family: var(--font-mono);
  font-size: .74rem;
  letter-spacing: .06em;
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line-strong);
  padding-bottom: 2px;
}

.page-faq .faq-index-top:hover,
.page-faq .faq-index-top:focus-visible {
  color: var(--flame);
  border-bottom-color: var(--flame);
}

.page-faq .faq-main {
  min-width: 0;
}

/* ---------- 分组 ---------- */
.page-faq .faq-group {
  margin-bottom: clamp(2.2rem, 5vw, 3.4rem);
  scroll-margin-top: calc(var(--header-h) + 1.2rem);
}

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

.page-faq .faq-group-head {
  display: flex;
  align-items: baseline;
  gap: .85rem;
  padding-bottom: .6rem;
  border-bottom: 2px solid var(--faq-line);
}

.page-faq .faq-group-num {
  flex: none;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .82rem;
  color: var(--flame);
}

.page-faq .faq-group-title {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.3rem, 4vw, 2rem);
  letter-spacing: -.02em;
  line-height: 1.2;
  color: var(--paper-white);
}

.page-faq .faq-group-desc {
  margin: .75rem 0 1.1rem;
  max-width: 62ch;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--faq-body-dim);
}

.page-faq .faq-media {
  margin: 0 0 1.1rem;
  border: 2px solid var(--line-cyan);
  background: var(--ink-2);
}

.page-faq .faq-media img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 340px;
  object-fit: cover;
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  min-width: 0;
}

.page-faq .faq-item {
  border-left: 4px solid var(--cyan);
  background: var(--ink-2);
  transition: border-color .18s ease, transform .18s ease;
}

.page-faq .faq-item + .faq-item {
  margin-top: .6rem;
}

.page-faq .faq-item[open] {
  border-left-color: var(--flame);
}

.page-faq .faq-item:hover {
  transform: translateX(2px);
}

.page-faq .faq-q {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: baseline;
  gap: .8rem;
  padding: 1rem var(--faq-pad-x);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(.96rem, 2.4vw, 1.1rem);
  line-height: 1.5;
  letter-spacing: -.01em;
  color: var(--paper-white);
}

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

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

.page-faq .faq-q-num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .74rem;
  font-weight: 400;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-faq .faq-q-text {
  min-width: 0;
  overflow-wrap: anywhere;
}

.page-faq .faq-q-icon {
  position: relative;
  align-self: center;
  width: 1rem;
  height: 1rem;
}

.page-faq .faq-q-icon::before {
  content: "+";
  display: block;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--cyan);
  text-align: center;
}

.page-faq .faq-item[open] .faq-q-icon::before {
  content: "−";
  color: var(--flame);
}

.page-faq .faq-a {
  padding: 0 var(--faq-pad-x) 1.15rem;
  border-top: 1px solid var(--faq-line);
  margin: 0 var(--faq-pad-x);
  padding-left: 0;
  padding-right: 0;
  font-size: .94rem;
  line-height: 1.8;
  color: var(--faq-body);
}

.page-faq .faq-a-lead {
  display: block;
  margin: .85rem 0 .4rem;
  font-weight: 700;
  color: var(--paper-white);
}

.page-faq .faq-a p {
  margin: .5rem 0 0;
}

.page-faq .faq-a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-a a:hover,
.page-faq .faq-a a:focus-visible {
  color: var(--flame);
}

.page-faq .faq-steps {
  margin: .7rem 0 0;
  padding: 0;
  list-style: none;
  counter-reset: faq-step;
}

.page-faq .faq-steps li {
  counter-increment: faq-step;
  position: relative;
  padding-left: 2rem;
  margin-top: .5rem;
  overflow-wrap: anywhere;
}

.page-faq .faq-steps li + li {
  border-top: 1px dashed rgba(127, 232, 221, .14);
  padding-top: .5rem;
}

.page-faq .faq-steps li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .15em;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: .72rem;
  color: var(--cyan);
}

.page-faq .faq-steps li + li::before {
  top: calc(.5rem + .15em);
}

.page-faq .faq-contact-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem .9rem;
  margin-top: .8rem;
  padding-top: .8rem;
  border-top: 1px solid var(--faq-line);
}

.page-faq .faq-contact-val {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--cyan);
  overflow-wrap: anywhere;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-hero-inner {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: end;
  }

  .page-faq .faq-media img {
    max-height: 260px;
  }

  .page-faq .faq-q {
    padding-top: 1.1rem;
    padding-bottom: 1.1rem;
  }
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: 262px minmax(0, 1fr);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 1.1rem);
  }

  .page-faq .faq-media img {
    max-height: 300px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-jump-link,
  .page-faq .faq-index-link {
    transition: none;
  }

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