.page-faq {
  --faq-notch: 18px;
  --faq-index-w: 15rem;
  padding-top: clamp(1.25rem, 3vw, 2.5rem);
  padding-bottom: clamp(3rem, 8vw, 6rem);
  background-image:
    radial-gradient(1100px 560px at 84% -6%, rgba(52, 224, 208, 0.10), transparent 62%),
    radial-gradient(880px 520px at 4% 30%, rgba(123, 91, 255, 0.09), transparent 60%);
  background-repeat: no-repeat;
}

.page-faq .breadcrumbs {
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 2.75rem);
  padding-bottom: clamp(1.75rem, 4.5vw, 3rem);
  border-bottom: 1px solid var(--c-line);
  margin-bottom: clamp(1.75rem, 4.5vw, 3rem);
}

.page-faq .faq-hero h1 {
  font-family: var(--font-head);
  font-weight: 900;
  font-size: clamp(1.95rem, 5.1vw, 3.6rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  margin: 0.7rem 0 0;
  color: var(--c-ink);
  max-width: 18ch;
}

.page-faq .faq-hero__lede {
  margin: 1.1rem 0 0;
  max-width: 62ch;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--c-mist);
}

.page-faq .faq-quick {
  position: relative;
  padding: 1.3rem 1.4rem 1.5rem;
  background: linear-gradient(158deg, var(--c-steel), var(--c-void-raise));
  border-left: 3px solid var(--c-cyan);
  clip-path: polygon(0 0, calc(100% - var(--faq-notch)) 0, 100% var(--faq-notch), 100% 100%, 0 100%);
}

.page-faq .faq-quick__id {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--c-mist);
}

.page-faq .faq-quick__list {
  margin: 0.9rem 0 0;
  display: grid;
  gap: 0.6rem;
}

.page-faq .faq-quick__row {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: baseline;
  gap: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px dashed var(--c-line);
}

.page-faq .faq-quick__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-faq .faq-quick__row dt {
  font-size: 0.8125rem;
  color: var(--c-mist);
}

.page-faq .faq-quick__row dd {
  margin: 0;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 0.875rem;
  color: var(--c-ink);
  text-align: right;
}

/* ---------- 主体 4:8 分栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.75rem, 4vw, 2.5rem);
}

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

.page-faq .faq-index__list {
  list-style: none;
  margin: 0.9rem 0 0;
  padding: 0 0 0.4rem;
  display: flex;
  gap: 0.5rem;
  overflow-x: auto;
  scrollbar-width: none;
}

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

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

.page-faq .faq-index__link {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--c-line);
  background: var(--c-void-raise);
  color: var(--c-ink);
  font-size: 0.8125rem;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-index__id {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.06em;
  color: var(--c-mist);
  transition: color 0.2s ease;
}

.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  color: var(--c-cyan);
  border-color: var(--c-cyan);
}

.page-faq .faq-index__link:hover .faq-index__id,
.page-faq .faq-index__link:focus-visible .faq-index__id {
  color: var(--c-cyan);
}

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

.page-faq .faq-group + .faq-group {
  margin-top: clamp(2rem, 5vw, 3.25rem);
}

.page-faq .faq-group__head {
  display: flex;
  align-items: baseline;
  gap: 0.8rem;
  padding-bottom: 0.7rem;
  border-bottom: 2px solid var(--c-line);
  margin-bottom: 1.25rem;
}

.page-faq .faq-group__id {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.1em;
  color: var(--c-amber);
}

.page-faq .faq-group__head h2 {
  margin: 0;
  font-size: clamp(1.2rem, 2.6vw, 1.55rem);
  font-family: var(--font-head);
  font-weight: 800;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}

.page-faq .faq-list {
  display: grid;
  gap: 0.7rem;
  margin-top: 1.25rem;
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-item {
  position: relative;
  background: var(--c-steel);
  border: 1px solid var(--c-line);
  border-left: 2px solid var(--c-line);
  transition: border-left-color 0.25s ease, background-color 0.25s ease;
}

.page-faq .faq-item[open] {
  border-left-color: var(--c-amber);
  background: linear-gradient(120deg, rgba(255, 162, 58, 0.07), transparent 42%), var(--c-steel);
}

.page-faq .faq-item > summary {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 1rem;
  padding: 1rem 1.1rem;
  cursor: pointer;
  list-style: none;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--c-ink);
  scroll-margin-top: 6rem;
}

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

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

.page-faq .faq-item > summary:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: -2px;
}

.page-faq .faq-item__q {
  display: block;
  min-width: 0;
}

.page-faq .faq-item__id {
  display: inline-block;
  margin-right: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-amber);
  vertical-align: 0.12em;
}

.page-faq .faq-item__mark {
  position: relative;
  width: 14px;
  height: 14px;
  margin-top: 0.42rem;
  flex: none;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background: var(--c-cyan);
  transition: transform 0.25s ease;
}

.page-faq .faq-item__mark::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 2px;
}

.page-faq .faq-item[open] .faq-item__mark::after {
  transform: scaleY(0);
}

.page-faq .faq-item__body {
  padding: 0 1.1rem 1.15rem;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-mist);
}

.page-faq .faq-item__body p + p {
  margin-top: 0.7rem;
}

.page-faq .faq-item__body a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-faq .faq-item__body a:hover {
  color: var(--c-ink);
}

/* ---------- 数据表 ---------- */
.page-faq .faq-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--c-line);
  background: var(--c-void-raise);
}

.page-faq .data-table {
  width: 100%;
  min-width: 34rem;
  border-collapse: collapse;
  font-size: 0.875rem;
}

.page-faq .data-table caption {
  caption-side: top;
  text-align: left;
  padding: 0.85rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--c-mist);
  border-bottom: 1px solid var(--c-line);
}

.page-faq .data-table th,
.page-faq .data-table td {
  padding: 0.72rem 1rem;
  text-align: left;
  vertical-align: middle;
  border-bottom: 1px solid var(--c-line);
  color: var(--c-ink);
  font-weight: 400;
}

.page-faq .data-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-faq .data-table thead th {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--c-mist);
  background: var(--c-steel);
}

.page-faq .data-table td.num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 1rem;
  color: var(--c-cyan);
  white-space: nowrap;
}

.page-faq .data-table .tag {
  white-space: nowrap;
}

/* ---------- 赛季周期 SVG ---------- */
.page-faq .faq-cycle-fig {
  margin: 0;
  padding: 1rem 1.1rem 0.9rem;
  border: 1px solid var(--c-line);
  background: var(--c-void-raise);
}

.page-faq .faq-cycle {
  display: block;
  width: 100%;
  height: auto;
}

.page-faq .faq-cycle__rail {
  stroke: var(--c-line);
  stroke-width: 2;
  stroke-dasharray: 6 6;
}

.page-faq .faq-cycle__dot {
  fill: var(--c-cyan);
}

.page-faq .faq-cycle__dot--mid {
  fill: var(--c-violet);
}

.page-faq .faq-cycle__dot--end {
  fill: var(--c-green);
}

.page-faq .faq-cycle__cap {
  fill: var(--c-ink);
  font-family: var(--font-body);
  font-size: 15px;
}

.page-faq .faq-cycle__tick {
  fill: var(--c-mist);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
}

.page-faq .faq-cycle__note {
  margin: 0.35rem 0 0;
  font-size: 0.8125rem;
  line-height: 1.7;
  color: var(--c-mist);
}

/* ---------- 图像 ---------- */
.page-faq .media-frame {
  margin: 0 0 1.25rem;
}

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

.page-faq .faq-banner {
  margin: clamp(2.5rem, 6vw, 4rem) 0 0;
}

/* ---------- 术语速查 ---------- */
.page-faq .faq-glossary {
  margin-top: clamp(2.75rem, 6.5vw, 4.5rem);
}

.page-faq .faq-glossary__head {
  max-width: 62ch;
  margin-bottom: clamp(1.25rem, 3vw, 2rem);
}

.page-faq .faq-glossary__head h2 {
  margin: 0.65rem 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.35rem, 3.2vw, 2rem);
  letter-spacing: -0.015em;
  color: var(--c-ink);
}

.page-faq .faq-glossary__head p {
  margin: 0.85rem 0 0;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-mist);
}

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

.page-faq .faq-terms {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  margin: 0;
  padding: 1px;
  background: var(--c-line);
  border: 1px solid var(--c-line);
}

.page-faq .faq-term {
  position: relative;
  margin: 0;
  padding: 1.05rem 1.1rem 1.25rem;
  background: var(--c-steel);
  transition: background-color 0.22s ease;
}

.page-faq .faq-term::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--c-line);
  transition: background-color 0.22s ease;
}

.page-faq .faq-term dt {
  display: flex;
  align-items: baseline;
  gap: 0.55rem;
  margin-bottom: 0.55rem;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: 1rem;
  color: var(--c-ink);
}

.page-faq .faq-term__id {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-mist);
}

.page-faq .faq-term dd {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.75;
  color: var(--c-mist);
}

.page-faq .faq-term:hover {
  background: var(--c-void-raise);
}

.page-faq .faq-term:hover::before {
  background: var(--c-cyan);
}

/* ---------- 继续查阅 ---------- */
.page-faq .faq-next {
  display: grid;
  gap: 1.5rem;
  margin-top: clamp(2.5rem, 6vw, 4rem);
  padding: clamp(1.25rem, 3.5vw, 2rem);
  background: var(--c-wine);
  border: 1px solid var(--c-line);
  clip-path: polygon(var(--faq-notch) 0, 100% 0, 100% 100%, 0 100%, 0 var(--faq-notch));
}

.page-faq .faq-next__main h2 {
  margin: 0.6rem 0 0;
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(1.2rem, 2.8vw, 1.6rem);
  color: var(--c-ink);
}

.page-faq .faq-next__main p {
  margin: 0.8rem 0 0;
  max-width: 60ch;
  font-size: 0.9375rem;
  line-height: 1.85;
  color: var(--c-ink);
  opacity: 0.86;
}

.page-faq .faq-next__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.55rem;
}

.page-faq .faq-next__list a {
  display: flex;
  align-items: baseline;
  gap: 0.7rem;
  padding: 0.75rem 0.9rem;
  background: rgba(11, 27, 52, 0.38);
  border: 1px solid var(--c-line);
  color: var(--c-ink);
  text-decoration: none;
  font-size: 0.9375rem;
  transition: border-color 0.2s ease, background-color 0.2s ease;
}

.page-faq .faq-next__list a:hover,
.page-faq .faq-next__list a:focus-visible {
  border-color: var(--c-cyan);
  background: rgba(11, 27, 52, 0.62);
}

.page-faq .faq-next__id {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: 0.08em;
  color: var(--c-amber);
}

/* ---------- 桌面端 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 7fr) minmax(15rem, 5fr);
    align-items: end;
  }

  .page-faq .faq-shell {
    grid-template-columns: minmax(13rem, 4fr) minmax(0, 8fr);
    gap: clamp(2rem, 4vw, 3.5rem);
    align-items: start;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 6.5rem;
    align-self: start;
  }

  .page-faq .faq-index__list {
    display: grid;
    gap: 0;
    overflow: visible;
    padding-bottom: 0;
  }

  .page-faq .faq-index__list > li {
    flex: none;
  }

  .page-faq .faq-index__link {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    gap: 0.6rem;
    padding: 0.6rem 0;
    border: 0;
    border-bottom: 1px solid var(--c-line);
    background: transparent;
    white-space: normal;
  }

  .page-faq .faq-index__link:hover,
  .page-faq .faq-index__link:focus-visible {
    border-bottom-color: var(--c-cyan);
  }

  .page-faq .faq-terms {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-next {
    grid-template-columns: minmax(0, 7fr) minmax(15rem, 5fr);
    align-items: start;
  }
}

@media (min-width: 1180px) {
  .page-faq .faq-terms {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-index__link,
  .page-faq .faq-term,
  .page-faq .faq-term::before,
  .page-faq .faq-next__list a,
  .page-faq .faq-item {
    transition: none;
  }
}
</main>