/* ===== 优德赛事 · 答疑中心（page-faq） ===== */
.page-faq {
  --faq-rail-w: 236px;
  --faq-open-bg: #0B2A23;
  --faq-item-bg: #0E3128;
  background: var(--ud-ink);
  color: var(--ud-white);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: calc(var(--ud-header-h) + clamp(36px, 6vw, 92px));
  padding-bottom: clamp(20px, 3vw, 36px);
  background:
    radial-gradient(120% 82% at 88% -18%, var(--ud-cyan-16), transparent 62%),
    radial-gradient(92% 70% at 2% -12%, var(--ud-orange-12), transparent 58%);
  overflow: hidden;
}

.page-faq .faq-hero::after {
  content: "";
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--ud-cyan-45), transparent);
}

.page-faq .faq-hero__title {
  margin: clamp(14px, 2vw, 24px) 0 0;
  max-width: 19ch;
  font-size: clamp(34px, 7vw, 88px);
  line-height: 1.02;
  letter-spacing: -0.02em;
  font-weight: 800;
}

.page-faq .faq-hero__lede {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
  max-width: 40ch;
  color: var(--ud-steel);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  margin: clamp(20px, 3vw, 34px) 0 0;
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--ud-steel);
}

.page-faq .faq-hero__meta span::before {
  content: "";
  display: inline-block;
  width: 6px;
  height: 6px;
  margin-right: 8px;
  background: var(--ud-orange);
  vertical-align: middle;
}

/* ---------- 首屏通栏视觉 ---------- */
.page-faq .faq-visual {
  margin: clamp(20px, 3vw, 36px) 0 0;
  border: 2px solid var(--ud-line);
  background: var(--ud-ink-2);
  overflow: hidden;
  box-shadow: var(--ud-shadow-hard);
}

.page-faq .faq-visual img {
  display: block;
  width: 100%;
  height: clamp(190px, 32vw, 400px);
  object-fit: cover;
}

/* ---------- 主体骨架 ---------- */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(24px, 3vw, 40px);
  padding-block: clamp(36px, 5vw, 80px) 0;
}

/* ---------- 左侧主题索引 ---------- */
.page-faq .faq-rail__label {
  margin: 0 0 12px;
  font-family: var(--ud-font-mono);
  font-size: 12px;
  letter-spacing: 0.18em;
  color: var(--ud-cyan);
}

.page-faq .faq-rail__list {
  list-style: none;
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-faq .faq-rail__list li {
  flex: 0 0 auto;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--ud-line);
  background: var(--ud-ink-2);
  border-radius: var(--ud-radius);
  color: var(--ud-steel);
  font-size: 13px;
  white-space: nowrap;
  text-decoration: none;
  transition: color 0.2s var(--ud-ease), border-color 0.2s var(--ud-ease), background-color 0.2s var(--ud-ease);
}

.page-faq .faq-rail__num {
  font-size: 11px;
  color: var(--ud-orange);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ud-white);
  border-color: var(--ud-cyan);
  background: var(--ud-cyan-06);
}

.page-faq .faq-rail__note {
  margin: 12px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--ud-mute);
}

/* ---------- 分组 ---------- */
.page-faq .faq-group + .faq-group {
  margin-top: clamp(36px, 5vw, 72px);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--ud-line);
}

.page-faq .faq-group__idx {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ud-cyan);
}

.page-faq .faq-group__title {
  margin: 0;
  font-size: clamp(22px, 3vw, 34px);
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.page-faq .faq-group__count {
  margin-left: auto;
  font-size: 12px;
  color: var(--ud-amber);
  white-space: nowrap;
}

/* ---------- 问答项 ---------- */
.page-faq .faq-item {
  margin-top: 12px;
  border: 2px solid var(--ud-line);
  background: var(--faq-item-bg);
  border-radius: var(--ud-radius);
  transition: border-color 0.2s var(--ud-ease), background-color 0.2s var(--ud-ease);
}

.page-faq .faq-item[open] {
  border-color: var(--ud-cyan);
  background: var(--faq-open-bg);
  box-shadow: var(--ud-shadow-hard);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 44px 1fr 16px;
  gap: 10px;
  align-items: start;
  padding: 14px clamp(12px, 2vw, 22px);
  cursor: pointer;
  list-style: none;
  color: var(--ud-white);
  font-size: clamp(15px, 1.4vw, 17px);
  font-weight: 500;
  line-height: 1.55;
}

.page-faq .faq-item__q::-webkit-details-marker,
.page-faq .faq-item__q::marker {
  display: none;
  content: "";
}

.page-faq .faq-item__num {
  font-size: 11.5px;
  letter-spacing: 0.06em;
  color: var(--ud-orange);
  padding-top: 4px;
}

.page-faq .faq-item__text {
  transition: color 0.2s var(--ud-ease);
}

.page-faq .faq-item__q:hover .faq-item__text,
.page-faq .faq-item__q:focus-visible .faq-item__text {
  color: var(--ud-cyan);
}

.page-faq .faq-item__arrow {
  justify-self: end;
  width: 0;
  height: 0;
  margin-top: 7px;
  border-left: 6px solid transparent;
  border-right: 6px solid transparent;
  border-top: 8px solid var(--ud-steel);
  transition: transform 0.24s var(--ud-ease), border-top-color 0.24s var(--ud-ease);
}

.page-faq .faq-item[open] .faq-item__arrow {
  transform: rotate(180deg);
  border-top-color: var(--ud-cyan);
}

.page-faq .faq-item__a {
  padding: 0 clamp(12px, 2vw, 22px) 18px;
}

.page-faq .faq-item__p {
  margin: 0;
  padding-left: 54px;
  max-width: 40em;
  color: var(--ud-steel);
  font-size: 15px;
  line-height: 1.75;
  animation: faq-fade 0.24s var(--ud-ease) both;
}

@keyframes faq-fade {
  from {
    opacity: 0;
    transform: translateY(-4px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------- 分组内插画 ---------- */
.page-faq .faq-figure {
  margin: 16px 0 0;
  border: 2px solid var(--ud-line);
  background: var(--ud-ink);
  overflow: hidden;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

.page-faq .faq-figure__cap {
  padding: 10px 14px;
  border-top: 2px solid var(--ud-line);
  background: var(--ud-ink-2);
  font-size: 13px;
  line-height: 1.65;
  color: var(--ud-steel);
}

.page-faq .faq-figure__cap .ud-mono {
  color: var(--ud-cyan);
  margin-right: 8px;
}

/* ---------- 分组收尾 CTA ---------- */
.page-faq .faq-help__cta {
  margin: 20px 0 0;
}

/* ---------- 下一步跳转 ---------- */
.page-faq .faq-next {
  margin: clamp(48px, 7vw, 96px) 0 clamp(48px, 7vw, 96px);
  padding: clamp(22px, 3.4vw, 40px);
  border: 2px solid var(--ud-line);
  background: var(--ud-ink-2);
  box-shadow: var(--ud-shadow-hard);
}

.page-faq .faq-next__title {
  margin: 12px 0 0;
  font-size: clamp(20px, 2.6vw, 28px);
  line-height: 1.2;
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
}

.page-faq .faq-next__list li {
  border-top: 1px solid var(--ud-line);
}

.page-faq .faq-next__list li:last-child {
  border-bottom: 1px solid var(--ud-line);
}

.page-faq .faq-next__list a {
  display: block;
  padding: 14px 4px;
  color: var(--ud-steel);
  font-size: 15px;
  line-height: 1.6;
  text-decoration: none;
  transition: color 0.2s var(--ud-ease), padding-left 0.2s var(--ud-ease), background-color 0.2s var(--ud-ease);
}

.page-faq .faq-next__list a::before {
  content: "→ ";
  color: var(--ud-cyan);
}

.page-faq .faq-next__list a:hover,
.page-faq .faq-next__list a:focus-visible {
  color: var(--ud-white);
  padding-left: 14px;
  background: var(--ud-cyan-06);
}

/* ---------- 窄屏 ---------- */
@media (max-width: 559px) {
  .page-faq .faq-item__q {
    grid-template-columns: 40px 1fr 14px;
    gap: 8px;
  }

  .page-faq .faq-item__p {
    padding-left: 0;
    font-size: 14.5px;
  }

  .page-faq .faq-visual {
    box-shadow: 5px 5px 0 0 var(--ud-line);
  }

  .page-faq .faq-next {
    box-shadow: 5px 5px 0 0 var(--ud-line);
  }
}

/* ---------- 桌面栅格 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail-w) minmax(0, 1fr);
    gap: clamp(28px, 4vw, 64px);
    align-items: start;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: calc(var(--ud-header-h) + 24px);
  }

  .page-faq .faq-rail__list {
    display: block;
    overflow: visible;
    padding: 0;
    border-top: 2px solid var(--ud-line);
  }

  .page-faq .faq-rail__list li {
    border-bottom: 1px solid var(--ud-line);
  }

  .page-faq .faq-rail__link {
    border: none;
    background: transparent;
    border-radius: 0;
    padding: 12px 4px;
    font-size: 14px;
    white-space: normal;
    width: 100%;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    padding-left: 12px;
  }

  .page-faq .faq-answers {
    min-width: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__p {
    animation: none;
  }

  .page-faq .faq-item__arrow,
  .page-faq .faq-rail__link,
  .page-faq .faq-next__list a {
    transition: none;
  }
}
</final>