.page-faq {
  --faq-accent: var(--turf);
  padding-bottom: clamp(40px, 7vw, 88px);
}

/* ---------- 页头 ---------- */
.page-faq .faq-head {
  padding-top: clamp(18px, 4vw, 40px);
}

.page-faq .faq-head .eyebrow {
  display: block;
  margin: 0 0 14px;
}

.page-faq .faq-head h1 {
  margin: 0 0 18px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(34px, 8.2vw, 70px);
  line-height: 1.05;
  letter-spacing: -0.025em;
  color: var(--cream);
  max-width: 20ch;
}

.page-faq .faq-head .lede {
  margin: 0 0 22px;
  max-width: 64ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-head__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-head__meta li {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--stone);
}

.page-faq .faq-head__meta span {
  color: var(--turf);
}

/* ---------- 悬浮索引胶囊 ---------- */
.page-faq .idx-bar {
  position: sticky;
  top: calc(var(--header-h) + 12px);
  z-index: 6;
  display: flex;
  gap: 6px;
  margin: clamp(24px, 4vw, 40px) 0 clamp(28px, 5vw, 56px);
  padding: 7px;
  overflow-x: auto;
  background: rgba(18, 51, 40, 0.86);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-pill);
  -webkit-backdrop-filter: blur(12px);
  backdrop-filter: blur(12px);
  scrollbar-width: none;
}

.page-faq .idx-bar::-webkit-scrollbar {
  display: none;
}

.page-faq .idx-link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border-radius: var(--radius-pill);
  font-size: 13px;
  line-height: 1.4;
  white-space: nowrap;
  color: var(--silver);
  text-decoration: none;
  transition: background 120ms var(--ease), color 120ms var(--ease);
}

.page-faq .idx-link:hover,
.page-faq .idx-link:focus-visible {
  background: rgba(124, 228, 155, 0.12);
  color: var(--turf);
  outline: none;
}

.page-faq .idx-link__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  color: var(--stone);
}

/* ---------- 主题分组 ---------- */
.page-faq .topic {
  padding: clamp(32px, 5.5vw, 64px) 0;
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 88px);
}

.page-faq .topic--rules {
  --faq-accent: var(--turf);
}

.page-faq .topic--europe {
  --faq-accent: var(--amber);
}

.page-faq .topic--referee {
  --faq-accent: var(--pulse);
}

.page-faq .topic--stats {
  --faq-accent: var(--steel);
}

.page-faq .topic--scope {
  --faq-accent: var(--clay);
}

.page-faq .topic--club {
  --faq-accent: var(--cream);
}

.page-faq .topic__head {
  display: grid;
  gap: 6px;
  margin-bottom: clamp(16px, 2.6vw, 28px);
}

.page-faq .topic__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.2em;
  color: var(--faq-accent);
}

.page-faq .topic__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(32px, 9vw, 78px);
  line-height: 0.98;
  letter-spacing: -0.035em;
  color: var(--cream);
}

.page-faq .topic__note {
  margin: 10px 0 0;
  max-width: 60ch;
  font-size: 14px;
  line-height: 1.7;
  color: var(--stone);
}

/* ---------- 问答项 ---------- */
.page-faq .qa {
  position: relative;
  border-top: 1px solid var(--line-soft);
}

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

.page-faq .qa[open]::before {
  content: "";
  position: absolute;
  left: 0;
  top: 12px;
  bottom: 12px;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--faq-accent);
  opacity: 0.85;
}

.page-faq .qa summary {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 18px 6px 18px 18px;
  cursor: pointer;
  list-style: none;
  outline: none;
}

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

.page-faq .qa summary::marker {
  content: "";
}

.page-faq .qa summary::before {
  content: "";
  position: absolute;
  left: 0;
  top: 16px;
  bottom: 16px;
  width: 3px;
  border-radius: var(--radius-pill);
  background: var(--faq-accent);
  opacity: 0;
  transition: opacity 120ms var(--ease);
}

.page-faq .qa:not([open]) summary:hover::before,
.page-faq .qa:not([open]) summary:focus-visible::before {
  opacity: 0.4;
}

.page-faq .qa summary:focus-visible .qa__q {
  color: var(--faq-accent);
}

.page-faq .qa__num {
  flex: 0 0 26px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--faq-accent);
  transition: color 120ms var(--ease);
}

.page-faq .qa__q {
  font-size: 17px;
  line-height: 1.55;
  font-weight: 500;
  color: var(--cream);
  transition: color 120ms var(--ease);
}

.page-faq .qa[open] .qa__q {
  color: var(--faq-accent);
}

.page-faq .qa__mark {
  flex: 0 0 auto;
  margin-left: auto;
  align-self: center;
  font-family: var(--font-mono);
  font-size: 15px;
  line-height: 1;
  color: var(--stone);
}

.page-faq .qa__mark::before {
  content: "+";
}

.page-faq .qa[open] .qa__mark::before {
  content: "−";
}

.page-faq .qa__a {
  padding: 0 6px 22px 18px;
}

.page-faq .qa[open] .qa__a {
  animation: faq-answer-in 240ms var(--ease) both;
}

.page-faq .qa__a p {
  margin: 0;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

@keyframes faq-answer-in {
  from {
    opacity: 0;
    transform: translateY(-6px);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

/* ---------- 插图 ---------- */
.page-faq .faq-figure {
  margin: clamp(24px, 4vw, 40px) 0 0;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--deep);
}

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

.page-faq .faq-figure figcaption {
  padding: 12px 16px 14px;
  border-top: 1px solid var(--line-soft);
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--stone);
}

/* ---------- 结尾 ---------- */
.page-faq .faq-next {
  margin-top: clamp(36px, 6vw, 72px);
  padding: clamp(24px, 4vw, 44px);
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-xl);
  background:
    radial-gradient(120% 160% at 0% 0%, rgba(124, 228, 155, 0.12) 0%, rgba(124, 228, 155, 0) 58%),
    linear-gradient(160deg, var(--deep) 0%, rgba(13, 20, 18, 0.9) 100%);
}

.page-faq .faq-next__title {
  margin: 0 0 14px;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(26px, 4.4vw, 42px);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--cream);
}

.page-faq .faq-next__text {
  margin: 0 0 24px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--silver);
}

.page-faq .faq-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-head h1 {
    max-width: 17ch;
  }

  .page-faq .qa-list,
  .page-faq .faq-figure {
    padding-left: clamp(0px, 6vw, 88px);
  }

  .page-faq .faq-figure {
    padding-left: 0;
    margin-left: clamp(0px, 6vw, 88px);
  }

  .page-faq .qa summary {
    gap: 20px;
    padding: 22px 12px 22px 24px;
  }

  .page-faq .qa__a {
    padding: 0 12px 26px 24px;
  }

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

  .page-faq .qa__a p {
    font-size: 16px;
  }

  .page-faq .topic__note {
    margin-top: 14px;
  }
}

/* ---------- 动效降级 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq .idx-link,
  .page-faq .qa summary::before,
  .page-faq .qa__num,
  .page-faq .qa__q {
    transition: none;
  }

  .page-faq .qa[open] .qa__a {
    animation: none;
  }
}