.page-faq {
  --faq-paper: #F5F7F4;
  --faq-paper-ink: #0D231B;
  --faq-link: #0B6B52;
  --faq-num: #0A5A46;
  --faq-edge: #2A3330;
  background: var(--turf);
  color: var(--chalk);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: 20px 0 44px;
  background:
    linear-gradient(160deg, rgba(61, 245, 200, .10) 0%, rgba(61, 245, 200, 0) 46%),
    var(--ink);
  border-bottom: var(--bd) solid var(--faq-edge);
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 340px;
  height: 340px;
  background: var(--neon);
  opacity: .05;
  transform: rotate(20deg);
  pointer-events: none;
}

.page-faq .faq-crumbs {
  position: relative;
  z-index: 2;
  margin-bottom: 26px;
}

.page-faq .faq-crumbs ol {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-family: var(--font-mono);
  font-size: .78rem;
  letter-spacing: .05em;
}

.page-faq .faq-crumbs li + li::before {
  content: "/";
  margin-right: 8px;
  color: var(--mist);
}

.page-faq .faq-crumbs a {
  color: var(--mist);
  text-decoration: none;
}

.page-faq .faq-crumbs a:hover,
.page-faq .faq-crumbs a:focus-visible {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-faq .faq-crumbs [aria-current="page"] {
  color: var(--neon);
}

.page-faq .faq-hero__grid {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 34px;
}

.page-faq .faq-hero__text .eyebrow {
  color: var(--neon);
  letter-spacing: .18em;
}

.page-faq .faq-hero h1 {
  margin: 12px 0 0;
  max-width: 17em;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.9rem, 4.9vw, 3.3rem);
  line-height: 1.16;
  letter-spacing: -.02em;
  color: var(--chalk);
}

.page-faq .faq-hero .lede {
  margin-top: 18px;
  max-width: 34rem;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--chalk);
  opacity: .85;
}

.page-faq .faq-hero__hint {
  margin: 22px 0 0;
  max-width: 40rem;
  padding: 14px 16px;
  border-left: var(--bd) solid var(--neon);
  background: rgba(61, 245, 200, .06);
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-faq .faq-hero__hint a {
  color: var(--neon);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

.page-faq .faq-hero__art {
  position: relative;
  padding-top: 30px;
  padding-left: 18px;
}

.page-faq .faq-hero__glyph {
  position: absolute;
  top: 0;
  left: 0;
  z-index: 3;
  width: 86px;
  height: 86px;
  filter: drop-shadow(0 6px 14px rgba(0, 0, 0, .55));
}

.page-faq .faq-hero__shot {
  margin: 0;
}

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

/* ---------- 问答主板 ---------- */
.page-faq .faq-board {
  padding: 46px 0 60px;
  background:
    repeating-linear-gradient(90deg, rgba(155, 176, 166, .06) 0 1px, transparent 1px 32px),
    var(--turf);
}

.page-faq .faq-board__grid {
  display: grid;
  gap: 30px;
}

/* 分类索引 */
.page-faq .faq-rail {
  padding: 18px 16px 20px;
  border: var(--bd) solid var(--faq-edge);
  background: linear-gradient(180deg, var(--turf-2), var(--turf));
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-rail__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: .76rem;
  font-weight: 700;
  letter-spacing: .18em;
  color: var(--neon);
}

.page-faq .faq-rail__list {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 8px 10px;
  border: 2px solid transparent;
  color: var(--chalk);
  text-decoration: none;
  font-weight: 700;
  font-size: .92rem;
  line-height: 1.4;
  transition: background .18s ease, border-color .18s ease, color .18s ease, transform .18s ease;
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  background: rgba(61, 245, 200, .10);
  border-color: var(--neon);
  color: var(--neon);
  transform: translateX(3px);
}

.page-faq .faq-rail__num {
  font-family: var(--font-mono);
  font-size: .78rem;
  font-weight: 700;
  letter-spacing: .04em;
  color: var(--neon-2);
}

.page-faq .faq-rail__link:hover .faq-rail__num,
.page-faq .faq-rail__link:focus-visible .faq-rail__num {
  color: var(--neon);
}

.page-faq .faq-rail__note {
  margin: 16px 0 0;
  padding-top: 14px;
  border-top: 2px dashed rgba(155, 176, 166, .35);
  font-size: .8rem;
  line-height: 1.7;
  color: var(--mist);
}

/* 问题分组 */
.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: 44px;
}

.page-faq .faq-group__head {
  position: relative;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 18px;
  border-bottom: var(--bd) solid var(--turf-2);
}

.page-faq .faq-group__head::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: calc(-1 * var(--bd));
  width: 72px;
  height: var(--bd);
  background: var(--neon);
}

.page-faq .faq-group__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.18rem, 2.4vw, 1.6rem);
  letter-spacing: -.01em;
  color: var(--chalk);
}

.page-faq .faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .faq-item {
  border: 2px solid var(--turf-2);
  background: rgba(27, 74, 56, .32);
  transition: border-color .18s ease, box-shadow .18s ease, background .18s ease;
}

.page-faq .faq-item[open] {
  border-color: var(--neon);
  background: var(--turf-2);
  box-shadow: var(--shadow-sm);
}

.page-faq .faq-item > summary {
  position: relative;
  display: block;
  min-height: 44px;
  padding: 15px 56px 15px 18px;
  cursor: pointer;
  list-style: none;
  font-weight: 700;
  font-size: .99rem;
  line-height: 1.55;
  color: var(--chalk);
  transition: color .18s ease;
}

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

.page-faq .faq-item > summary::after {
  content: "+";
  position: absolute;
  top: 50%;
  right: 16px;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 1.45rem;
  font-weight: 700;
  line-height: 1;
  color: var(--neon);
  transition: color .18s ease;
}

.page-faq .faq-item[open] > summary::after {
  content: "\2212";
  color: var(--flare);
}

.page-faq .faq-item > summary:hover,
.page-faq .faq-item > summary:focus-visible {
  color: var(--neon);
}

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

.page-faq .faq-item__body {
  padding: 16px 18px 20px;
  background: var(--faq-paper);
  color: var(--faq-paper-ink);
  border-top: 2px solid var(--turf-2);
  font-size: .95rem;
  line-height: 1.78;
}

.page-faq .faq-item[open] .faq-item__body {
  animation: faq-reveal .22s ease-out;
}

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

.page-faq .faq-item__body p + p {
  margin-top: 10px;
}

.page-faq .faq-item__body strong {
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--faq-num);
}

.page-faq .faq-item__body a {
  color: var(--faq-link);
  font-weight: 700;
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

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

.page-faq .faq-figure {
  margin: 22px 0 0;
}

/* ---------- 收尾 ---------- */
.page-faq .faq-cta {
  position: relative;
  overflow: hidden;
  padding: 42px 0;
  background: var(--ink);
  border-top: var(--bd) solid var(--faq-edge);
}

.page-faq .faq-cta::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(104deg, var(--turf-2) 0 44%, transparent 44%);
  pointer-events: none;
}

.page-faq .faq-cta__inner {
  position: relative;
  z-index: 2;
  display: grid;
  gap: 20px;
}

.page-faq .faq-cta__lead {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.05rem, 2.2vw, 1.32rem);
  line-height: 1.5;
  color: var(--chalk);
}

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

@keyframes faq-reveal {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- 响应式 ---------- */
@media (max-width: 899px) {
  .page-faq .faq-hero__art {
    padding-top: 22px;
    padding-left: 14px;
  }

  .page-faq .faq-hero__glyph {
    width: 62px;
    height: 62px;
  }

  .page-faq .faq-item > summary {
    padding: 14px 48px 14px 15px;
    font-size: .95rem;
  }

  .page-faq .faq-item__body {
    padding: 14px 15px 18px;
  }
}

@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 26px 0 56px;
  }

  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 52px;
    align-items: end;
  }

  .page-faq .faq-board__grid {
    grid-template-columns: 268px minmax(0, 1fr);
    gap: 48px;
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 92px;
  }
}

@media (min-width: 760px) {
  .page-faq .faq-cta__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item > summary::after,
  .page-faq .faq-rail__link {
    transition: none;
  }

  .page-faq .faq-item[open] .faq-item__body {
    animation: none;
  }
}