.page-faq {
  --faq-line: rgba(30, 107, 79, .6);
  --faq-line-soft: rgba(30, 107, 79, .34);
  --faq-pad: clamp(16px, 3.2vw, 30px);
  --faq-paper-dim: #4A6559;
  --faq-muted: rgba(255, 255, 255, .82);
  --faq-soft: rgba(169, 184, 176, .95);
  display: block;
  overflow-x: clip;
  color: var(--white);
  font-family: var(--font-sans);
  background:
    radial-gradient(120% 78% at 92% -12%, rgba(47, 168, 255, .17), transparent 58%),
    radial-gradient(96% 72% at -8% 18%, rgba(228, 255, 77, .13), transparent 62%),
    var(--pitch);
}

/* ---------- 面包屑 ---------- */
.page-faq .breadcrumb {
  margin: 0 0 16px;
}
.page-faq .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 13px;
  color: var(--mist);
}
.page-faq .breadcrumb__list a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid rgba(169, 184, 176, .4);
}
.page-faq .breadcrumb__list a:hover,
.page-faq .breadcrumb__list a:focus-visible {
  color: var(--lemon);
  border-bottom-color: var(--lemon);
}
.page-faq .breadcrumb__list [aria-current="page"] {
  color: rgba(255, 255, 255, .92);
}
.page-faq .breadcrumb__sep {
  color: rgba(169, 184, 176, .6);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding: clamp(22px, 4.4vw, 54px) 0 clamp(30px, 5vw, 64px);
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 44px);
  align-items: center;
}
.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-size: clamp(31px, 6.2vw, 58px);
  font-weight: 900;
  line-height: 1.06;
  letter-spacing: -.022em;
  text-wrap: balance;
}
.page-faq .faq-hero__lead {
  margin: 0 0 22px;
  max-width: 48ch;
  font-size: clamp(15px, 2vw, 17.5px);
  line-height: 1.8;
  color: var(--faq-muted);
}
.page-faq .faq-hero__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-faq .faq-hero__figure {
  position: relative;
  z-index: 0;
  margin: 0;
}
.page-faq .faq-hero__figure::after {
  content: "";
  position: absolute;
  inset: 12px -12px -12px 12px;
  border: 1px solid rgba(228, 255, 77, .5);
  border-radius: var(--r-l);
  z-index: -1;
  pointer-events: none;
}
.page-faq .faq-hero__figure .media-frame__img {
  position: relative;
  z-index: 1;
}

/* ---------- 主体布局 ---------- */
.page-faq .faq-body {
  padding: 0 0 clamp(46px, 7vw, 96px);
}
.page-faq .faq-layout {
  display: grid;
  gap: clamp(20px, 3.4vw, 38px);
  align-items: start;
}

/* ---------- 左侧分类索引 ---------- */
.page-faq .faq-index {
  border: 1px solid var(--faq-line);
  border-radius: var(--r-m);
  background: rgba(6, 32, 25, .74);
  padding: 14px;
}
.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-size: 12px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--lemon);
}
.page-faq .faq-index__rail {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  scrollbar-width: thin;
}
.page-faq .faq-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: center;
  padding: 9px 14px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  font-size: 14px;
  line-height: 1.3;
  white-space: nowrap;
  color: rgba(255, 255, 255, .86);
  text-decoration: none;
  transition: background .22s var(--ease), color .22s var(--ease), border-color .22s var(--ease);
}
.page-faq .faq-index__link:hover,
.page-faq .faq-index__link:focus-visible {
  border-color: var(--lemon);
  color: var(--lemon);
}
.page-faq .faq-index__link.is-current {
  background: var(--lemon);
  border-color: var(--lemon);
  color: var(--pitch-deep);
  font-weight: 700;
}
.page-faq .faq-index__hint {
  margin: 10px 0 0;
  font-size: 12px;
  line-height: 1.6;
  letter-spacing: .02em;
  color: var(--mist);
}

/* ---------- 筛选条 ---------- */
.page-faq .faq-tools {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: clamp(18px, 3vw, 28px);
  padding: 8px 8px 8px 18px;
  border: 1px solid var(--faq-line);
  border-radius: 999px;
  background: rgba(6, 32, 25, .62);
}
.page-faq .faq-search__label {
  flex: none;
  font-size: 12px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--lemon);
  white-space: nowrap;
}
.page-faq .faq-search {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
}
.page-faq .faq-search__input {
  width: 100%;
  min-width: 0;
  padding: 8px 0;
  border: 0;
  background: none;
  color: var(--white);
  font: inherit;
  font-size: 15px;
}
.page-faq .faq-search__input::placeholder {
  color: rgba(169, 184, 176, .78);
}
.page-faq .faq-search__input:focus {
  outline: none;
}
.page-faq .faq-tools:focus-within {
  border-color: var(--lemon);
  box-shadow: 0 0 0 3px rgba(228, 255, 77, .16);
}

/* ---------- 问答面板堆叠 ---------- */
.page-faq .faq-panel {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  min-width: 0;
}
.page-faq .faq-list {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  min-width: 0;
}
.page-faq .faq-group {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--faq-line);
  border-radius: var(--r-l);
  background: linear-gradient(180deg, rgba(6, 32, 25, .9), rgba(11, 61, 46, .74));
  scroll-margin-top: calc(var(--header-h) + 20px);
}
.page-faq .faq-group::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 4px;
  background: var(--lemon);
}
.page-faq .faq-group:nth-child(2)::before {
  background: var(--amber);
}
.page-faq .faq-group:nth-child(3)::before {
  background: var(--blue);
}
.page-faq .faq-group:nth-child(4)::before {
  background: var(--red);
}
.page-faq .faq-group:nth-child(5)::before {
  background: var(--lemon);
}
.page-faq .faq-group__head {
  padding: clamp(18px, 3vw, 28px) var(--faq-pad) clamp(14px, 2.4vw, 20px);
  border-bottom: 1px solid var(--faq-line-soft);
}
.page-faq .faq-group__no {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .16em;
  color: var(--lemon);
}
.page-faq .faq-group__title {
  margin: 0 0 8px;
  font-size: clamp(21px, 3.1vw, 30px);
  font-weight: 800;
  line-height: 1.24;
  letter-spacing: -.012em;
}
.page-faq .faq-group__desc {
  margin: 0;
  max-width: 62ch;
  font-size: 14px;
  line-height: 1.72;
  color: var(--faq-soft);
}

/* ---------- 单条问答 ---------- */
.page-faq .faq-item {
  border-bottom: 1px solid var(--faq-line-soft);
}
.page-faq .faq-item:last-child {
  border-bottom: 0;
}
.page-faq .faq-q {
  margin: 0;
  font-size: inherit;
  font-weight: inherit;
}
.page-faq .faq-q__btn {
  width: 100%;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: start;
  gap: 12px;
  padding: clamp(14px, 2.4vw, 20px) var(--faq-pad);
  border: 0;
  background: none;
  color: inherit;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: background .2s var(--ease);
}
.page-faq .faq-q__btn:hover,
.page-faq .faq-q__btn:focus-visible {
  background: rgba(30, 107, 79, .24);
}
.page-faq .faq-q__btn:focus-visible {
  outline: 2px solid var(--lemon);
  outline-offset: -2px;
}
.page-faq .faq-q__no {
  padding-top: 3px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--lemon);
}
.page-faq .faq-q__text {
  font-size: clamp(15px, 1.9vw, 17px);
  font-weight: 700;
  line-height: 1.55;
}
.page-faq .faq-q__ico {
  position: relative;
  flex: none;
  width: 15px;
  height: 15px;
  margin-top: 5px;
}
.page-faq .faq-q__ico::before,
.page-faq .faq-q__ico::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  width: 100%;
  height: 2px;
  background: var(--lemon);
  transform: translateY(-50%);
  transition: transform .26s var(--ease), opacity .26s var(--ease);
}
.page-faq .faq-q__ico::after {
  transform: translateY(-50%) rotate(90deg);
}
.page-faq .faq-q__btn[aria-expanded="true"] .faq-q__ico::after {
  transform: translateY(-50%) rotate(0deg);
  opacity: 0;
}
.page-faq .faq-a {
  padding: 0 var(--faq-pad) clamp(16px, 2.6vw, 22px);
}
.page-faq .faq-a p {
  margin: 0 0 .8em;
  max-width: 70ch;
  font-size: 15px;
  line-height: 1.78;
  color: var(--faq-muted);
}
.page-faq .faq-a p:last-child {
  margin-bottom: 0;
}
.page-faq .faq-a a.link-underline {
  color: var(--lemon);
  text-decoration: none;
  border-bottom: 1px solid rgba(228, 255, 77, .55);
}
.page-faq .faq-a a.link-underline:hover,
.page-faq .faq-a a.link-underline:focus-visible {
  border-bottom-color: var(--lemon);
}

/* ---------- 规则示例卡 ---------- */
.page-faq .faq-rulecard {
  margin: clamp(16px, 2.6vw, 24px) var(--faq-pad) 0;
  padding: clamp(16px, 2.6vw, 22px);
  border-radius: var(--r-m);
  border-left: 5px solid var(--lemon);
  background: var(--paper);
  color: var(--pitch);
}
.page-faq .faq-rulecard__title {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .1em;
  color: var(--faq-paper-dim);
}
.page-faq .faq-rulecard__table {
  display: grid;
  gap: 4px;
}
.page-faq .faq-rulecard__row {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  align-items: center;
  padding: 8px 10px;
  border-radius: var(--r-s);
}
.page-faq .faq-rulecard__row--head {
  padding-bottom: 4px;
}
.page-faq .faq-rulecard__row:not(.faq-rulecard__row--head):nth-child(2) {
  background: rgba(228, 255, 77, .42);
}
.page-faq .faq-rulecard__cap {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--faq-paper-dim);
}
.page-faq .faq-rulecard__rank {
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 700;
  color: var(--pitch);
}
.page-faq .faq-rulecard__num {
  font-family: var(--font-mono);
  font-size: clamp(15px, 2.2vw, 19px);
  font-weight: 700;
  letter-spacing: .02em;
  color: var(--pitch);
}
.page-faq .faq-rulecard__foot {
  margin: 14px 0 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--faq-paper-dim);
}

/* ---------- 组内插图 ---------- */
.page-faq .faq-group__figure {
  margin: clamp(16px, 2.6vw, 24px) var(--faq-pad) clamp(18px, 3vw, 26px);
}

/* ---------- 空态 ---------- */
.page-faq .empty-state {
  display: grid;
  gap: 6px;
  margin: 0;
  padding: 22px var(--faq-pad);
  border: 1px dashed var(--faq-line);
  border-radius: var(--r-m);
  background: rgba(6, 32, 25, .6);
}
.page-faq .empty-state[hidden] {
  display: none;
}
.page-faq .empty-state__title {
  font-size: 15px;
  font-weight: 700;
  color: var(--white);
}
.page-faq .empty-state__hint {
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 响应式 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(28px, 4.4vw, 62px);
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: minmax(190px, 232px) minmax(0, 1fr);
    gap: clamp(26px, 3.6vw, 46px);
  }
  .page-faq .faq-index {
    position: sticky;
    top: calc(var(--header-h) + 20px);
    padding: 18px 16px;
  }
  .page-faq .faq-index__rail {
    flex-direction: column;
    gap: 2px;
    overflow: visible;
    padding-bottom: 0;
  }
  .page-faq .faq-index__link {
    width: 100%;
    justify-content: flex-start;
    padding: 10px 12px;
    border-color: transparent;
    border-radius: var(--r-s);
    font-size: 14.5px;
  }
  .page-faq .faq-index__link.is-current {
    background: var(--lemon);
  }
}

@media (min-width: 1240px) {
  .page-faq .faq-group__head {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 22ch);
    column-gap: clamp(20px, 3vw, 40px);
    align-items: end;
  }
  .page-faq .faq-group__no {
    grid-column: 1 / -1;
  }
  .page-faq .faq-group__title {
    margin-bottom: 0;
  }
  .page-faq .faq-group__desc {
    text-align: right;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-q__btn,
  .page-faq .faq-q__ico::before,
  .page-faq .faq-q__ico::after {
    transition: none;
  }
}