.page-faq {
  --faq-lead: clamp(15px, 1.15vw, 16px);
  display: block;
}

.page-faq .breadcrumb {
  padding-top: clamp(14px, 2vw, 22px);
}

/* ---------- 页头 ---------- */
.page-faq .faq-hero {
  padding-top: clamp(16px, 3vw, 34px);
}

.page-faq .faq-hero__eyebrow {
  display: inline-block;
}

.page-faq .faq-hero__title {
  margin: 12px 0 0;
  max-width: 20ch;
  font-size: clamp(30px, 6.6vw, 60px);
  line-height: 1.04;
  letter-spacing: -0.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: var(--faq-lead);
  line-height: 1.85;
  color: var(--mist);
}

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

.page-faq .faq-facts {
  list-style: none;
  margin: clamp(22px, 3.4vw, 34px) 0 0;
  padding: clamp(16px, 2.4vw, 24px) 0 0;
  border-top: var(--bd-line);
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
}

.page-faq .faq-fact {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.page-faq .faq-fact__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 34px);
  line-height: 1.1;
  color: var(--lime);
  letter-spacing: -0.01em;
}

.page-faq .faq-fact__key {
  font-size: 13px;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .faq-banner {
  margin: clamp(24px, 3.6vw, 44px) 0 0;
}

.page-faq .faq-banner img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1600 / 600;
  object-fit: cover;
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.4vw, 40px);
  padding-top: clamp(30px, 4.6vw, 58px);
}

.page-faq .faq-toc {
  border: var(--bd);
  background: var(--ink-2);
  box-shadow: var(--hard-sm);
  padding: 14px;
  align-self: start;
}

.page-faq .faq-toc__title {
  margin: 0 0 10px;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.12em;
  color: var(--mist);
}

.page-faq .faq-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 4px;
}

.page-faq .faq-toc__list a {
  display: flex;
  gap: 10px;
  align-items: baseline;
  padding: 9px 12px;
  border-left: 3px solid transparent;
  color: var(--paper);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease);
}

.page-faq .faq-toc__list a:hover,
.page-faq .faq-toc__list a[data-visible] {
  border-left-color: var(--lime);
  background: rgba(200, 255, 61, 0.1);
  color: var(--lime);
}

.page-faq .faq-toc__num {
  font-family: var(--mono);
  font-size: 12px;
  color: var(--mist);
}

.page-faq .faq-toc__list a:hover .faq-faq-toc__num,
.page-faq .faq-toc__list a:hover .faq-toc__num,
.page-faq .faq-toc__list a[data-visible] .faq-toc__num {
  color: var(--lime);
}

/* ---------- 问答分组 ---------- */
.page-faq .faq-qa {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 96px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(34px, 5vw, 64px);
}

.page-faq .faq-group .section-head {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: var(--bd-line);
}

.page-faq .faq-group .section-head .headline {
  margin: 0;
  font-size: clamp(20px, 2.5vw, 26px);
  line-height: 1.25;
  color: var(--paper);
}

.page-faq .qa {
  margin-top: 12px;
  border: 2px solid var(--line);
  background: var(--ink-2);
  transition: border-color 0.25s var(--ease), box-shadow 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .qa[open] {
  border-color: var(--lime);
  background: #12314f;
  box-shadow: var(--hard-sm);
}

.page-faq .qa__q {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  padding: 15px 16px;
  cursor: pointer;
  list-style: none;
  font-size: clamp(15px, 1.1vw, 16px);
  font-weight: 700;
  line-height: 1.55;
  color: var(--paper);
}

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

.page-faq .qa__q::before {
  content: "Q";
  flex: none;
  font-family: var(--mono);
  font-size: 13px;
  font-weight: 700;
  line-height: 1.75;
  color: var(--lime);
}

.page-faq .qa__q::after {
  content: "+";
  flex: none;
  margin-left: auto;
  font-family: var(--mono);
  font-size: 18px;
  line-height: 1.25;
  color: var(--lime);
}

.page-faq .qa[open] .qa__q::after {
  content: "\2212";
}

.page-faq .qa__a {
  padding: 0 16px 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-faq .qa__a p {
  margin: 0 0 10px;
}

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

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

.page-faq .qa__steps {
  list-style: none;
  margin: 10px 0 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-faq .qa__steps li {
  display: flex;
  gap: 10px;
  align-items: baseline;
}

.page-faq .qa__steps .num {
  flex: none;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--lime);
}

.page-faq .faq-figure {
  margin: 18px 0 0;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 900 / 500;
  object-fit: cover;
}

/* ---------- 收束横幅 ---------- */
.page-faq .faq-cta {
  margin-top: clamp(40px, 6vw, 80px);
  padding: clamp(22px, 3.6vw, 38px);
  border: var(--bd);
  box-shadow: var(--hard);
  background: linear-gradient(104deg, var(--lime) 0%, var(--lime-soft) 58%, #b8ea50 100%);
  color: var(--shadow);
  display: grid;
  gap: 18px;
  align-items: center;
}

.page-faq .faq-cta__title {
  margin: 0;
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.01em;
  color: var(--shadow);
}

.page-faq .faq-cta__text {
  margin: 8px 0 0;
  font-size: 15px;
  line-height: 1.7;
  color: #12283f;
}

.page-faq .faq-cta__link {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 22px;
  border: 2px solid var(--shadow);
  background: var(--shadow);
  color: var(--lime);
  font-size: 15px;
  font-weight: 700;
  text-decoration: none;
  transition: transform 0.2s var(--ease), background 0.2s var(--ease);
}

.page-faq .faq-cta__link:hover {
  background: #0d2540;
  transform: translateY(-2px);
}

/* ---------- 桌面布局 ---------- */
@media (min-width: 700px) {
  .page-faq .qa__a {
    padding-left: 42px;
  }

  .page-faq .faq-hero__title {
    font-size: clamp(40px, 5.2vw, 64px);
  }
}

@media (min-width: 880px) {
  .page-faq .faq-body {
    grid-template-columns: 248px minmax(0, 1fr);
  }

  .page-faq .faq-toc {
    position: sticky;
    top: 96px;
  }

  .page-faq .faq-cta {
    grid-template-columns: minmax(0, 1fr) auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .qa,
  .page-faq .faq-toc__list a,
  .page-faq .faq-cta__link {
    transition: none;
  }
}