/* ===== NG赛场 · 问答中心 /questions/ ===== */

.page-faq {
  --faq-body: #C6D5CF;
  --faq-rule: rgba(169, 183, 190, 0.16);
  --faq-gap: clamp(1.5rem, 5vw, 2.75rem);

  background: var(--ink);
  color: var(--mist);
  padding-block: 1.25rem 4.5rem;
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  font-size: 0.8125rem;
  padding-block: 0.25rem 0.75rem;
  color: var(--silver);
}

.page-faq .breadcrumb a {
  color: var(--silver);
  text-decoration: none;
}

.page-faq .breadcrumb a:hover,
.page-faq .breadcrumb a:focus-visible {
  color: var(--lime);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-block: 0.75rem 1.5rem;
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -0.75rem;
  right: 0;
  width: min(58%, 440px);
  height: 158px;
  background: linear-gradient(135deg, rgba(201, 247, 59, 0.13), rgba(14, 27, 44, 0));
  clip-path: polygon(0 0, 100% 0, 100% 100%, 26% 100%);
  pointer-events: none;
}

.page-faq .faq-hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-hero__title {
  margin: 0.55rem 0 0.85rem;
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(1.8rem, 6.4vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: 0.005em;
  color: var(--mist);
}

.page-faq .faq-hero__mark {
  color: var(--lime);
}

.page-faq .faq-hero__lede {
  margin: 0;
  max-width: var(--measure);
  font-size: 1rem;
  line-height: 1.85;
  color: var(--faq-body);
}

.page-faq .faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.15rem;
}

.page-faq .faq-hero__figure {
  position: relative;
  margin: 0;
  padding: 0.5rem;
  border: 1px solid var(--line);
  background: var(--night);
}

.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  right: 0;
  bottom: 0;
  width: 54px;
  height: 54px;
  border-right: 2px solid var(--lime);
  border-bottom: 2px solid var(--lime);
}

.page-faq .faq-hero__img {
  display: block;
  width: 100%;
  height: auto;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.92) contrast(1.05);
}

/* ---------- 分区条 ---------- */
.page-faq .faq-topics {
  position: sticky;
  top: var(--topbar-h);
  z-index: 6;
  margin-block: 0.5rem 0.25rem;
  padding-block: 0.7rem;
  background: var(--ink);
  border-bottom: 1px solid var(--line);
  overflow-x: auto;
  overscroll-behavior-x: contain;
  scrollbar-width: none;
}

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

.page-faq .faq-topics__list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
  list-style: none;
  width: max-content;
  min-width: 100%;
}

.page-faq .faq-topics__link {
  display: inline-flex;
  align-items: baseline;
  gap: 0.5rem;
  padding: 0.5rem 1.1rem;
  border: 1px solid var(--line);
  background: rgba(18, 49, 40, 0.5);
  color: var(--silver);
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: nowrap;
  text-decoration: none;
  clip-path: polygon(9px 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
  transition: color var(--dur) var(--ease),
    background-color var(--dur) var(--ease),
    border-color var(--dur) var(--ease);
}

.page-faq .faq-topics__link:hover,
.page-faq .faq-topics__link:focus-visible {
  color: var(--ink);
  background: var(--lime);
  border-color: var(--lime);
}

.page-faq .faq-topics__idx {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--lime-dim);
  transition: color var(--dur) var(--ease);
}

.page-faq .faq-topics__link:hover .faq-topics__idx,
.page-faq .faq-topics__link:focus-visible .faq-topics__idx {
  color: var(--ink);
}

/* ---------- 分区 ---------- */
.page-faq .faq-section {
  scroll-margin-top: calc(var(--topbar-h) + 4.5rem);
  padding-block: 2.25rem 0.5rem;
  border-top: 1px solid var(--line);
}

.page-faq .faq-section:first-of-type {
  border-top-color: transparent;
  padding-top: 1.75rem;
}

.page-faq .faq-section__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  column-gap: 0.9rem;
  row-gap: 0.3rem;
  margin-bottom: 1.4rem;
}

.page-faq .faq-section__num {
  font-family: var(--font-mono);
  font-size: clamp(1.25rem, 4.4vw, 2rem);
  line-height: 1;
  letter-spacing: 0.04em;
  color: var(--lime);
}

.page-faq .faq-section__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.25rem, 3.4vw, 1.6rem);
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--mist);
}

.page-faq .faq-section__note {
  grid-column: 2;
  margin: 0;
  max-width: var(--measure);
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--silver);
}

/* ---------- 问题与答案 ---------- */
.page-faq .faq-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-faq .faq-item {
  position: relative;
  padding: 1.05rem 0 1.05rem 2.55rem;
  border-bottom: 1px solid var(--faq-rule);
}

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

.page-faq .faq-item__num {
  position: absolute;
  left: 0;
  top: 1.3rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.06em;
  color: var(--lime-dim);
}

.page-faq .faq-item__q {
  margin: 0 0 0.45rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.0625rem;
  line-height: 1.55;
  color: var(--mist);
}

.page-faq .faq-item__a {
  margin: 0;
  max-width: var(--measure);
  padding-left: 0.85rem;
  border-left: 1px solid rgba(201, 247, 59, 0.32);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--faq-body);
}

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

.page-faq .faq-item__a a:hover,
.page-faq .faq-item__a a:focus-visible {
  color: var(--mist);
}

/* 折叠的长答案 */
.page-faq .faq-more {
  margin-top: 0.55rem;
  max-width: var(--measure);
}

.page-faq .faq-more > summary {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  cursor: pointer;
  list-style: none;
  padding: 0.15rem 0;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  color: var(--lime);
}

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

.page-faq .faq-more > summary::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1;
}

.page-faq .faq-more[open] > summary::after {
  content: "–";
}

.page-faq .faq-more__body {
  margin: 0.5rem 0 0;
  padding-left: 0.85rem;
  border-left: 1px solid rgba(201, 247, 59, 0.32);
  font-size: 0.9375rem;
  line-height: 1.8;
  color: var(--faq-body);
}

/* ---------- 术语分区 ---------- */
.page-faq .faq-terms {
  display: grid;
  gap: 1.75rem;
}

.page-faq .faq-terms__figure {
  margin: 0;
  padding: 0.625rem;
  border: 1px solid var(--line);
  background: var(--night);
}

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

.page-faq .faq-terms__cap {
  margin-top: 0.65rem;
  font-size: 0.8125rem;
  line-height: 1.65;
  color: var(--silver);
}

/* 双栏索引 */
.page-faq .faq-finder {
  margin-top: 1.75rem;
  padding: 1.25rem 1.25rem 0.6rem;
  border: 1px solid var(--line);
  background: linear-gradient(160deg, rgba(14, 27, 44, 0.9), rgba(18, 49, 40, 0.5));
}

.page-faq .faq-finder__title {
  margin: 0 0 0.85rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.12em;
  color: var(--lime);
}

.page-faq .faq-finder__list {
  margin: 0;
}

.page-faq .faq-finder__row {
  display: grid;
  gap: 0.15rem;
  padding-block: 0.7rem;
  border-top: 1px solid var(--faq-rule);
}

.page-faq .faq-finder__row:first-of-type {
  border-top: 0;
}

.page-faq .faq-finder__term {
  margin: 0;
  font-size: 0.9375rem;
  font-weight: 700;
  line-height: 1.6;
  color: var(--mist);
}

.page-faq .faq-finder__desc {
  margin: 0;
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--silver);
}

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

.page-faq .faq-finder__desc a:hover,
.page-faq .faq-finder__desc a:focus-visible {
  color: var(--mist);
}

/* ---------- 收尾指引条 ---------- */
.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.9rem 1.5rem;
  margin-top: 1.6rem;
  padding: 1.05rem 1.15rem;
  border: 1px solid var(--line);
  border-left: 2px solid var(--lime);
  background: rgba(14, 27, 44, 0.55);
}

.page-faq .faq-cta__text {
  flex: 1 1 16rem;
  margin: 0;
  font-size: 0.9375rem;
  line-height: 1.7;
  color: var(--faq-body);
}

/* ---------- 宽屏 ---------- */
@media (min-width: 880px) {
  .page-faq .faq-hero {
    padding-block: 1.25rem 2rem;
  }

  .page-faq .faq-hero__inner {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    align-items: end;
    column-gap: 3rem;
  }

  .page-faq .faq-section__head {
    grid-template-columns: 96px minmax(0, 1fr);
    column-gap: 1.6rem;
  }

  .page-faq .faq-item {
    padding-left: 3.1rem;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-terms {
    grid-template-columns: minmax(0, 1fr) minmax(0, 292px);
    align-items: start;
    column-gap: 2.5rem;
  }
}

@media (min-width: 720px) {
  .page-faq .faq-finder__row {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1.25fr);
    column-gap: 1.5rem;
    align-items: baseline;
  }
}

/* ---------- 减少动效 ---------- */
@media (prefers-reduced-motion: reduce) {
  .page-faq {
    scroll-behavior: auto;
  }

  .page-faq .faq-topics__link,
  .page-faq .faq-topics__idx {
    transition: none;
  }
}