.page-faq {
  --faq-rail: 240px;
  --faq-gap: 40px;
  background: var(--warm-white);
  color: var(--ink);
}

/* ---------- 首屏 ---------- */

.page-faq .qa-hero {
  position: relative;
  overflow: hidden;
  background-color: var(--deep-sea);
  background-image:
    radial-gradient(circle at 82% 18%, rgba(200, 162, 74, .16), transparent 46%),
    radial-gradient(circle at 12% 92%, rgba(18, 60, 105, .85), transparent 58%);
  padding-bottom: 56px;
}

.page-faq .qa-hero::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  bottom: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--gold) 22%, var(--gold-bright) 50%, var(--gold) 78%, transparent);
  opacity: .68;
}

.page-faq .qa-hero__inner {
  max-width: 860px;
}

.page-faq .qa-hero .breadcrumb__list {
  color: rgba(244, 246, 248, .62);
  margin-bottom: 26px;
}

.page-faq .qa-hero .breadcrumb__item a {
  color: rgba(244, 246, 248, .82);
  text-decoration: none;
  transition: color var(--ease);
}

.page-faq .qa-hero .breadcrumb__item a:hover,
.page-faq .qa-hero .breadcrumb__item a:focus-visible {
  color: var(--gold-bright);
}

.page-faq .qa-hero .eyebrow {
  color: var(--gold-bright);
}

.page-faq .qa-hero h1 {
  font-family: var(--font-sans);
  font-weight: 900;
  font-size: clamp(30px, 5vw, 54px);
  line-height: 1.18;
  letter-spacing: -.02em;
  color: var(--warm-white);
  margin: 14px 0 0;
}

.page-faq .qa-hero__lead {
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.9;
  color: rgba(251, 248, 243, .82);
  margin: 22px 0 0;
  max-width: 68ch;
}

.page-faq .qa-hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(158px, 1fr));
  gap: 18px 24px;
  margin-top: 38px;
  padding-top: 26px;
  border-top: 1px solid var(--line-light);
}

.page-faq .qa-stat {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.page-faq .qa-stat__value {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(22px, 3vw, 30px);
  font-weight: 700;
  color: var(--gold-bright);
  letter-spacing: .01em;
}

.page-faq .qa-stat__label {
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.6;
  color: rgba(244, 246, 248, .66);
}

.page-faq .qa-hero .vertical-note {
  position: absolute;
  right: 26px;
  top: 168px;
  writing-mode: vertical-rl;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .32em;
  color: rgba(200, 162, 74, .68);
}

/* ---------- 主体分栏 ---------- */

.page-faq .qa-main {
  padding-top: 56px;
}

.page-faq .qa-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
}

.page-faq .qa-rail {
  min-width: 0;
}

.page-faq .qa-rail__title {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .16em;
  color: var(--slate);
  margin: 0 0 12px;
}

.page-faq .qa-rail__nav {
  display: flex;
  gap: 4px;
  overflow-x: auto;
  padding-bottom: 8px;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
}

.page-faq .qa-rail__link {
  flex: 0 0 auto;
  display: block;
  padding: 9px 14px;
  font-family: var(--font-sans);
  font-size: 14.5px;
  color: var(--indigo);
  text-decoration: none;
  white-space: nowrap;
  border: 1px solid var(--line-dark);
  border-radius: 999px;
  background: var(--fog);
  transition: color var(--ease), border-color var(--ease), background-color var(--ease);
}

.page-faq .qa-rail__link:hover,
.page-faq .qa-rail__link:focus-visible {
  color: var(--deep-sea);
  border-color: var(--gold);
  background: #fff;
}

.page-faq .qa-rail__note {
  font-family: var(--font-sans);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--slate);
  margin: 14px 0 0;
}

/* ---------- 分组 ---------- */

.page-faq .qa-stream {
  min-width: 0;
}

.page-faq .qa-group + .qa-group {
  margin-top: 60px;
}

.page-faq .qa-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 22px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .qa-group__no {
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: .1em;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-faq .qa-group__head h2 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.4;
  color: var(--deep-sea);
  margin: 0;
}

/* ---------- 答案卡片 ---------- */

.page-faq .qa-card {
  background: #fff;
  transition: border-color var(--ease), box-shadow var(--ease);
}

.page-faq .qa-card + .qa-card {
  margin-top: 16px;
}

.page-faq .qa-card:hover {
  border-color: var(--line-gold);
}

.page-faq .qa-card:target {
  border-color: var(--gold);
  box-shadow: 0 0 0 3px rgba(200, 162, 74, .16);
}

.page-faq .qa-card__q {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 18px;
  line-height: 1.55;
  color: var(--deep-sea);
  margin: 0 0 12px;
}

.page-faq .qa-card__a {
  font-family: var(--font-body);
  font-size: 16.5px;
  line-height: 1.9;
  color: var(--ink);
}

.page-faq .qa-card__a p {
  margin: 0 0 1.1em;
}

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

.page-faq .qa-card__a a {
  color: var(--indigo);
}

/* ---------- 有序步骤 ---------- */

.page-faq .qa-steps {
  counter-reset: faq-step;
  list-style: none;
  margin: 0 0 1.2em;
  padding: 0;
}

.page-faq .qa-steps > li {
  counter-increment: faq-step;
  position: relative;
  padding: 14px 0 14px 48px;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.85;
  border-top: 1px solid var(--line-dark);
}

.page-faq .qa-steps > li:last-child {
  border-bottom: 1px solid var(--line-dark);
}

.page-faq .qa-steps > li::before {
  content: counter(faq-step, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 16px;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
  color: var(--slate);
  transition: color var(--ease);
}

.page-faq .qa-steps > li:hover::before,
.page-faq .qa-steps > li:focus-within::before {
  color: var(--gold);
}

/* ---------- 插图 ---------- */

.page-faq .qa-fig {
  margin: 22px 0 4px;
  border: 1px solid var(--line-dark);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--fog);
}

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

.page-faq .qa-fig figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--line-dark);
  background: #fff;
}

/* ---------- 底部行动 ---------- */

.page-faq .qa-cta {
  margin-top: 64px;
}

.page-faq .qa-cta__body {
  position: relative;
  overflow: hidden;
  background: var(--deep-sea);
  background-image: radial-gradient(circle at 88% 12%, rgba(200, 162, 74, .18), transparent 54%);
  border-radius: var(--radius);
  padding: 32px 24px;
  border-bottom: 2px solid var(--gold);
}

.page-faq .qa-cta__body h2 {
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  line-height: 1.4;
  color: var(--warm-white);
  margin: 0 0 12px;
}

.page-faq .qa-cta__body p {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.9;
  color: rgba(251, 248, 243, .8);
  margin: 0 0 24px;
  max-width: 62ch;
}

.page-faq .qa-cta__body a {
  color: var(--gold-bright);
}

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

/* ---------- 平板及以上 ---------- */

@media (min-width: 1000px) {
  .page-faq .qa-layout {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: 56px;
    align-items: start;
  }

  .page-faq .qa-rail {
    position: sticky;
    top: calc(var(--header-h) + 28px);
    padding-right: 8px;
    border-right: 1px solid var(--line-dark);
  }

  .page-faq .qa-rail__title {
    padding-right: 16px;
  }

  .page-faq .qa-rail__nav {
    flex-direction: column;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .qa-rail__link {
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    background: transparent;
    padding: 10px 16px 10px 14px;
    font-size: 15px;
    color: var(--slate);
    white-space: normal;
  }

  .page-faq .qa-rail__link:hover,
  .page-faq .qa-rail__link:focus-visible {
    color: var(--deep-sea);
    border-left-color: var(--gold);
    background: var(--fog);
  }

  .page-faq .qa-rail__note {
    padding-right: 16px;
  }

  .page-faq .qa-card {
    padding: 28px 30px;
  }

  .page-faq .qa-card__q {
    font-size: 19px;
  }

  .page-faq .qa-cta__body {
    padding: 44px 48px;
  }
}

/* ---------- 窄屏微调 ---------- */

@media (max-width: 560px) {
  .page-faq .qa-hero__lead {
    font-size: 16px;
  }

  .page-faq .qa-group + .qa-group {
    margin-top: 48px;
  }

  .page-faq .qa-card {
    padding: 20px 18px;
  }

  .page-faq .qa-card__q {
    font-size: 17px;
  }

  .page-faq .qa-card__a {
    font-size: 16px;
  }

  .page-faq .qa-steps > li {
    padding-left: 40px;
    font-size: 15.5px;
  }

  .page-faq .qa-cta__actions .btn {
    width: 100%;
    text-align: center;
  }
}