.page-faq {
  --faq-rail: 232px;
  padding-block: 2rem 5rem;
}

.page-faq .breadcrumb {
  margin-bottom: 1.75rem;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 2rem;
  padding-bottom: 3rem;
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-hero h1 {
  margin-top: 0.75rem;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.9rem, 5.4vw, 3.05rem);
  line-height: 1.22;
  letter-spacing: -0.01em;
  color: var(--mist);
}

.page-faq .faq-hero__lead {
  margin-top: 1.25rem;
  max-width: 36em;
  font-size: 1rem;
  line-height: 1.9;
  color: var(--mist-80);
}

.page-faq .faq-hero__points {
  margin: 1.6rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.65rem;
}

.page-faq .faq-hero__points li {
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.92rem;
  line-height: 1.7;
  color: var(--mist-66);
}

.page-faq .faq-hero__points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 0.7rem;
  height: 1px;
  background: var(--lime);
}

.page-faq .faq-hero__links {
  margin-top: 1.9rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.page-faq .faq-hero__media {
  margin: 0;
  border: 1px solid var(--hair);
  background:
    radial-gradient(120% 92% at 80% 10%, rgba(183, 255, 42, 0.1), transparent 62%),
    var(--ink-800);
}

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

/* ---------- 问答主体 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: 2.25rem;
  padding-top: 2.5rem;
}

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

.page-faq .faq-index__title {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq .faq-index__list {
  margin: 0.9rem 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 0.1rem;
}

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.65rem;
  padding: 0.55rem 0.6rem 0.55rem 0.75rem;
  border-left: 2px solid transparent;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--mist-66);
  text-decoration: none;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-faq .faq-index__link .num {
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  color: var(--lime-deep);
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--mist);
  border-left-color: var(--lime);
  background-color: rgba(183, 255, 42, 0.06);
  outline: none;
}

.page-faq .faq-index__hint {
  margin-top: 1.25rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hair-soft);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-index__hint a {
  color: var(--amber);
  text-decoration: underline;
  text-underline-offset: 3px;
}

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

.page-faq .faq-group + .faq-group {
  margin-top: 3.25rem;
  padding-top: 2.75rem;
  border-top: 1px solid var(--hair-soft);
}

.page-faq .faq-group__head {
  display: grid;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.page-faq .faq-group__num {
  font-size: 0.78rem;
  letter-spacing: 0.24em;
  color: var(--lime-deep);
}

.page-faq .faq-group__head h2 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.32rem, 3.4vw, 1.8rem);
  line-height: 1.32;
  color: var(--mist);
}

.page-faq .faq-group__head p {
  max-width: 44em;
  font-size: 0.93rem;
  line-height: 1.85;
  color: var(--mist-66);
}

/* ---------- 手风琴 ---------- */
.page-faq .faq-list {
  display: grid;
  gap: 0.5rem;
}

.page-faq .faq-item {
  border: 1px solid var(--hair-soft);
  background-color: var(--ink-800);
  transition: border-color 0.25s var(--ease), background-color 0.25s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(183, 255, 42, 0.3);
  background-image: linear-gradient(180deg, rgba(183, 255, 42, 0.05), transparent 58%);
}

.page-faq .faq-item__q {
  display: flex;
  align-items: flex-start;
  gap: 0.9rem;
  padding: 1rem 1.05rem;
  font-size: 0.97rem;
  font-weight: 500;
  line-height: 1.65;
  color: var(--mist);
  cursor: pointer;
  list-style: none;
}

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

.page-faq .faq-item__q::before {
  content: "";
  flex: 0 0 auto;
  width: 6px;
  height: 6px;
  margin-top: 0.62em;
  background-color: var(--lime-deep);
  transform: rotate(45deg);
  transition: background-color 0.25s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::before {
  background-color: var(--amber);
}

.page-faq .faq-item__q::after {
  content: "+";
  flex: 0 0 auto;
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 1.05rem;
  line-height: 1.35;
  color: var(--lime);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--amber);
}

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

.page-faq .faq-item__a {
  padding: 0 1.05rem 1.1rem 2.35rem;
  font-size: 0.9rem;
  line-height: 1.9;
  color: var(--mist-66);
}

.page-faq .faq-item__a p + p {
  margin-top: 0.7rem;
}

.page-faq .faq-figure {
  margin: 1.5rem 0 0;
  border: 1px solid var(--hair-soft);
  background-color: var(--ink-800);
}

/* ---------- 上手步骤 ---------- */
.page-faq .faq-steps {
  position: relative;
  margin: 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 1.5rem;
}

.page-faq .faq-steps::before {
  content: "";
  position: absolute;
  left: 15px;
  top: 0.6rem;
  bottom: 0.6rem;
  width: 1px;
  background: linear-gradient(180deg, var(--lime-deep), rgba(111, 168, 0, 0.12));
}

.page-faq .faq-step {
  position: relative;
  padding-left: 3rem;
}

.page-faq .faq-step__num {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  place-items: center;
  width: 31px;
  height: 31px;
  border: 1px solid rgba(183, 255, 42, 0.45);
  background-color: var(--ink-900);
  color: var(--lime);
  font-size: 0.82rem;
}

.page-faq .faq-step h3 {
  margin-bottom: 0.35rem;
  font-size: 1rem;
  font-weight: 600;
  line-height: 1.5;
  color: var(--mist);
}

.page-faq .faq-step p {
  font-size: 0.9rem;
  line-height: 1.85;
  color: var(--mist-66);
}

/* ---------- 联系面板 ---------- */
.page-faq .faq-contact {
  position: relative;
  margin-top: 4rem;
  padding: 2rem 1.15rem;
  border: 1px solid var(--hair);
  background-color: var(--ink-800);
}

.page-faq .faq-contact::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 72px;
  height: 2px;
  background-color: var(--amber);
}

.page-faq .faq-contact__title {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(1.25rem, 3vw, 1.6rem);
  line-height: 1.35;
  color: var(--mist);
}

.page-faq .faq-contact__grid {
  margin-top: 1.75rem;
  display: grid;
  gap: 1.5rem;
}

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

.page-faq .faq-contact__label {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--mute);
}

.page-faq .faq-contact__value {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.98rem;
  line-height: 1.6;
  color: var(--mist);
  word-break: break-all;
}

.page-faq .faq-contact__value--text {
  font-family: var(--font-sans);
  font-size: 0.92rem;
  word-break: break-word;
  color: var(--mist-80);
}

.page-faq .faq-contact__note {
  margin-top: 0.5rem;
  font-size: 0.82rem;
  line-height: 1.7;
  color: var(--mute);
}

.page-faq .faq-copy {
  margin-top: 0.7rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.6rem;
}

.page-faq .faq-copy__btn {
  font-size: 0.8rem;
  padding: 0.4rem 0.85rem;
}

.page-faq .faq-copy__status {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--lime);
}

.page-faq .faq-contact__foot {
  margin-top: 1.75rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hair-soft);
  font-size: 0.86rem;
  line-height: 1.8;
  color: var(--mute);
}

.page-faq .faq-contact__links {
  margin: 1rem 0 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
}

.page-faq .faq-contact__links a {
  font-size: 0.88rem;
  color: var(--mist-66);
  text-decoration: none;
  border-bottom: 1px solid var(--hair-strong);
  padding-bottom: 2px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-contact__links a:hover,
.page-faq .faq-contact__links a:focus-visible {
  color: var(--lime);
  border-bottom-color: var(--lime);
  outline: none;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .faq-contact {
    padding: 2.5rem 2rem;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 2rem 1.75rem;
  }
}

@media (min-width: 1024px) {
  .page-faq {
    padding-block: 2.5rem 6rem;
  }

  .page-faq .faq-hero {
    grid-template-columns: repeat(12, 1fr);
    column-gap: 2rem;
    row-gap: 0;
    align-items: start;
  }

  .page-faq .faq-hero__copy {
    grid-column: 1 / span 6;
  }

  .page-faq .faq-hero__media {
    grid-column: 8 / span 5;
    margin-top: 3.25rem;
  }

  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    column-gap: 3.5rem;
    padding-top: 3.25rem;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 2rem;
    align-self: start;
  }

  .page-faq .faq-contact {
    padding: 3rem 2.75rem;
    margin-top: 5rem;
  }

  .page-faq .faq-contact__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 2.25rem;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-hero__copy {
    grid-column: 1 / span 5;
  }

  .page-faq .faq-hero__media {
    grid-column: 7 / span 6;
  }
}

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