.page-faq {
  display: block;
  background:
    radial-gradient(1100px 560px at 88% -8%, rgba(34, 245, 200, .10), transparent 62%),
    radial-gradient(760px 420px at 4% 34%, rgba(255, 182, 39, .07), transparent 66%),
    linear-gradient(180deg, var(--ink) 0%, var(--pitch) 46%, var(--ink) 100%);
  color: var(--text);
}

/* ---------- 头部横幅 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(24px, 5vw, 62px) 0 clamp(24px, 4vw, 48px);
  border-bottom: var(--bw) solid var(--line);
}

.page-faq .faq-hero .breadcrumb {
  margin-bottom: clamp(14px, 2vw, 22px);
}

.page-faq .faq-hero .eyebrow {
  display: block;
  margin: 0 0 12px;
  color: var(--neon);
}

.page-faq .faq-hero h1 {
  margin: 0 0 16px;
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: clamp(28px, 6vw, 54px);
  line-height: 1.14;
  max-width: 20ch;
}

.page-faq .faq-hero .serif-lead {
  margin: 0 0 clamp(22px, 3vw, 38px);
  max-width: 64ch;
  color: var(--muted);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
}

.page-faq .faq-hero-media {
  margin: 0;
}

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

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: clamp(28px, 5vw, 62px) 0 clamp(44px, 7vw, 96px);
}

.page-faq .faq-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(20px, 3vw, 36px);
}

/* ---------- 问题目录 ---------- */
.page-faq .faq-index-title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-index-list {
  list-style: none;
  margin: 0;
  padding: 0 0 8px;
  display: flex;
  gap: 10px;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .faq-index-list > li {
  flex: 0 0 auto;
}

.page-faq .faq-index-link {
  display: flex;
  align-items: center;
  gap: 10px;
  min-height: 44px;
  padding: 10px 14px;
  border: var(--bw) solid var(--line);
  background: var(--step);
  color: var(--text);
  text-decoration: none;
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 600;
  line-height: 1.4;
  white-space: nowrap;
  transition: border-color .26s var(--ease), background-color .26s var(--ease), color .26s var(--ease);
}

.page-faq .faq-index-link:hover,
.page-faq .faq-index-link:focus-visible {
  border-color: var(--neon);
  background: var(--pitch);
  color: var(--neon-soft);
}

.page-faq .faq-index-num {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--amber);
}

/* ---------- 答案区 ---------- */
.page-faq .faq-answers {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.page-faq .faq-item {
  border: var(--bw) solid var(--line);
  background: var(--step);
  scroll-margin-top: 110px;
  transition: border-color .28s var(--ease), box-shadow .28s var(--ease), background-color .28s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: var(--neon);
  background: var(--pitch);
  box-shadow: 0 0 0 1px rgba(34, 245, 200, .18), var(--shadow-neon);
}

.page-faq .faq-q {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 20px);
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(15px, 1.7vw, 18px);
  line-height: 1.45;
  color: var(--text);
}

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

.page-faq .faq-q::marker {
  content: "";
}

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

.page-faq .faq-q-num {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: clamp(18px, 2.4vw, 24px);
  font-weight: 700;
  line-height: 1;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-faq .faq-item[open] .faq-q-num {
  color: var(--neon);
}

.page-faq .faq-toggle {
  position: relative;
  flex: 0 0 auto;
  margin-left: auto;
  width: 20px;
  height: 20px;
}

.page-faq .faq-toggle::before,
.page-faq .faq-toggle::after {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background: var(--neon);
}

.page-faq .faq-toggle::before {
  width: 14px;
  height: 2px;
}

.page-faq .faq-toggle::after {
  width: 2px;
  height: 14px;
  transition: transform .28s var(--ease), opacity .28s var(--ease);
}

.page-faq .faq-item[open] .faq-toggle::after {
  transform: translate(-50%, -50%) scaleY(0);
  opacity: 0;
}

.page-faq .faq-a {
  padding: clamp(14px, 2vw, 18px) clamp(14px, 2vw, 22px) clamp(18px, 3vw, 26px);
  border-top: 1px dashed var(--line);
}

.page-faq .faq-a p {
  margin: 0 0 14px;
  font-size: 16px;
  line-height: 1.85;
  color: var(--text);
}

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

.page-faq .faq-a .faq-muted {
  color: var(--muted);
  font-size: 15px;
}

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

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

/* ---------- 编号步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  counter-reset: fstep;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 12px 14px;
  background: var(--step);
  border-left: 3px solid var(--amber);
}

.page-faq .faq-item[open] .faq-step {
  background: var(--ink);
}

.page-faq .faq-step-num {
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.6vw, 26px);
  font-weight: 700;
  line-height: 1.1;
  color: var(--amber);
  letter-spacing: .02em;
}

.page-faq .faq-step-text {
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
  min-width: 0;
}

/* ---------- 要点列表 ---------- */
.page-faq .faq-points {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: grid;
  gap: 9px;
}

.page-faq .faq-points li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--text);
}

.page-faq .faq-points li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .66em;
  width: 8px;
  height: 8px;
  background: var(--neon);
}

/* ---------- 关键数字 ---------- */
.page-faq .faq-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}

.page-faq .faq-fact {
  border: var(--bw) solid var(--line);
  background: var(--ink);
  padding: 12px 14px;
}

.page-faq .faq-fact-num {
  display: block;
  font-family: var(--font-mono);
  font-size: clamp(20px, 2.4vw, 26px);
  font-weight: 700;
  color: var(--neon);
  letter-spacing: .01em;
}

.page-faq .faq-fact-label {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--muted);
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: 4px 0 16px;
}

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

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 10px;
  margin: 0 0 16px;
}

.page-faq .faq-contact-item {
  border: var(--bw) solid var(--line);
  border-top: 3px solid var(--amber);
  background: var(--ink);
  padding: 14px;
}

.page-faq .faq-contact-key {
  display: block;
  margin-bottom: 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--neon);
}

.page-faq .faq-contact-val {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1.6;
  color: var(--text);
  overflow-wrap: anywhere;
  word-break: break-word;
}

/* ---------- 桌面端：左侧粘性索引 + 右侧答案 ---------- */
@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 296px minmax(0, 1fr);
    gap: clamp(28px, 4vw, 60px);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 104px;
  }

  .page-faq .faq-index-list {
    flex-direction: column;
    overflow: visible;
    padding-bottom: 0;
  }

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

  .page-faq .faq-index-link {
    white-space: normal;
    align-items: baseline;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-layout {
    grid-template-columns: 336px minmax(0, 1fr);
  }
}

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