.page-faq {
  --faq-rail: 236px;
  --faq-rule: rgba(201, 162, 39, .22);
  background-color: var(--ink-deep);
  color: var(--paper);
}

/* ============ 首屏 ============ */
.page-faq .faq-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(36px, 5.5vw, 68px) 0 clamp(44px, 6.5vw, 84px);
  background-color: var(--ink-deep);
  background-image:
    repeating-linear-gradient(0deg, transparent 0 55px, var(--line-paper) 55px 56px),
    repeating-linear-gradient(90deg, transparent 0 55px, var(--line-paper) 55px 56px);
  border-bottom: 1px solid var(--line-gold);
}

.page-faq .faq-hero::before {
  content: "";
  position: absolute;
  top: -34%;
  right: -12%;
  width: min(560px, 62vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle, rgba(242, 118, 46, .20) 0%, transparent 66%);
  pointer-events: none;
}

.page-faq .faq-hero > .shell {
  position: relative;
  z-index: 1;
}

.page-faq .faq-hero h1 {
  margin: 16px 0 0;
  max-width: 20ch;
  font-size: clamp(29px, 5.2vw, 54px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.02em;
  color: var(--paper);
}

.page-faq .faq-hero__lead {
  margin: 22px 0 0;
  max-width: 660px;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: rgba(244, 239, 227, .8);
}

/* 站内检索 */
.page-faq .faq-search {
  margin-top: clamp(26px, 3.5vw, 40px);
  max-width: 540px;
}

.page-faq .faq-search__label {
  display: block;
  margin-bottom: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
}

.page-faq .faq-search__input {
  display: block;
  width: 100%;
  padding: 13px 16px;
  font-family: var(--font-sans);
  font-size: 15px;
  color: var(--paper);
  background-color: rgba(18, 58, 46, .82);
  border: 1px solid rgba(201, 162, 39, .4);
  border-radius: 2px;
  outline: none;
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}

.page-faq .faq-search__input::placeholder {
  color: rgba(244, 239, 227, .42);
}

.page-faq .faq-search__input:focus {
  border-color: var(--gold-bright);
  box-shadow: 0 0 0 3px rgba(201, 162, 39, .18);
}

.page-faq .faq-search__hint {
  margin: 9px 0 0;
  font-size: 12.5px;
  color: var(--moss-gray);
}

/* 首屏数据行 */
.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 14px 40px;
  margin: clamp(28px, 4vw, 44px) 0 0;
  padding: clamp(18px, 2.4vw, 24px) 0 0;
  list-style: none;
  border-top: 1px solid rgba(201, 162, 39, .22);
}

.page-faq .faq-stat {
  display: flex;
  align-items: baseline;
  gap: 10px;
}

.page-faq .faq-stat__num {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: clamp(24px, 3.4vw, 30px);
  font-weight: 700;
  line-height: 1;
  color: var(--gold-bright);
}

.page-faq .faq-stat__label {
  font-size: 13px;
  color: var(--moss-gray);
}

/* ============ 主体双层布局 ============ */
.page-faq .faq-body {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 56px);
  padding-top: clamp(40px, 6vw, 88px);
  padding-bottom: clamp(60px, 8vw, 120px);
}

/* 主题索引：移动端横滑胶囊 */
.page-faq .faq-rail {
  min-width: 0;
}

.page-faq .faq-rail__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--gold);
}

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

.page-faq .faq-rail__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 15px;
  font-size: 13px;
  white-space: nowrap;
  color: rgba(244, 239, 227, .82);
  text-decoration: none;
  border: 1px solid rgba(201, 162, 39, .3);
  border-radius: 999px;
  transition: color .18s var(--ease), border-color .18s var(--ease), background-color .18s var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ink-deep);
  background-color: var(--gold-bright);
  border-color: var(--gold-bright);
}

.page-faq .faq-rail__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--gold);
}

.page-faq .faq-rail__link:hover .faq-rail__no,
.page-faq .faq-rail__link:focus-visible .faq-rail__no {
  color: var(--ink-deep);
}

/* ============ 问答分组 ============ */
.page-faq .faq-stream {
  min-width: 0;
}

.page-faq .faq-group {
  scroll-margin-top: 110px;
}

.page-faq .faq-group + .faq-group {
  margin-top: clamp(44px, 6vw, 76px);
}

.page-faq .faq-group__head {
  position: relative;
  padding-left: 56px;
  margin-bottom: clamp(18px, 2.6vw, 26px);
}

.page-faq .faq-group__head::before {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: -22px;
  height: 12px;
  border-top: 1px solid rgba(201, 162, 39, .22);
  border-bottom: 1px solid rgba(201, 162, 39, .22);
  background-image: repeating-linear-gradient(90deg, rgba(201, 162, 39, .5) 0 2px, transparent 2px 10px);
  opacity: .8;
}

.page-faq .faq-group__head .index-badge {
  position: absolute;
  left: 0;
  top: 4px;
}

.page-faq .faq-group__head h2 {
  margin: 10px 0 0;
  font-size: clamp(20px, 2.6vw, 27px);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -.01em;
  color: var(--paper);
}

/* ============ 折叠问答 ============ */
.page-faq .faq-item {
  margin-bottom: 10px;
  background-color: rgba(18, 58, 46, .55);
  border: 1px solid var(--faq-rule);
  transition: border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-faq .faq-item[open] {
  border-color: rgba(232, 199, 102, .58);
  background-color: rgba(18, 58, 46, .78);
}

.page-faq .faq-item__q {
  position: relative;
  display: block;
  padding: 17px 56px 17px 20px;
  font-size: clamp(15px, 1.6vw, 16.5px);
  font-weight: 500;
  line-height: 1.65;
  color: var(--paper);
  cursor: pointer;
  list-style: none;
  transition: color .18s var(--ease);
}

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

.page-faq .faq-item__q:hover {
  color: var(--gold-bright);
}

.page-faq .faq-item__mark {
  position: absolute;
  top: 50%;
  right: 22px;
  width: 14px;
  height: 14px;
  margin-top: -7px;
}

.page-faq .faq-item__mark::before,
.page-faq .faq-item__mark::after {
  content: "";
  position: absolute;
  background-color: var(--gold-bright);
  transition: transform .22s var(--ease), opacity .22s var(--ease);
}

.page-faq .faq-item__mark::before {
  left: 0;
  top: 6px;
  width: 14px;
  height: 2px;
}

.page-faq .faq-item__mark::after {
  left: 6px;
  top: 0;
  width: 2px;
  height: 14px;
}

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

.page-faq .faq-item__a {
  padding: 20px;
  font-size: 15px;
  line-height: 1.78;
  color: var(--ink);
  background-color: var(--paper);
  border-top: 1px solid rgba(216, 207, 187, .7);
}

.page-faq .faq-item__a p {
  margin: 0 0 .9em;
}

.page-faq .faq-item__a p:last-child {
  margin-bottom: 0;
}

.page-faq .faq-item__a a {
  color: var(--gold-dark);
  text-decoration: none;
  border-bottom: 1px solid rgba(110, 90, 31, .5);
  transition: color .18s var(--ease), border-color .18s var(--ease);
}

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

/* 排查步骤 */
.page-faq .faq-steps {
  margin: 12px 0 14px;
  padding: 0;
  list-style: none;
}

.page-faq .faq-steps li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 9px;
  font-size: 14.5px;
  line-height: 1.7;
}

.page-faq .faq-steps__n {
  flex: none;
  min-width: 30px;
  padding: 1px 5px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 11.5px;
  letter-spacing: .06em;
  line-height: 1.6;
  text-align: center;
  color: var(--gold-dark);
  border: 1px solid rgba(110, 90, 31, .45);
}

/* 图片 */
.page-faq .faq-figure {
  margin: 18px 0 4px;
}

.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
  border: 1px solid rgba(110, 90, 31, .3);
  background-color: var(--paper-edge);
}

.page-faq .faq-figure figcaption {
  margin-top: 8px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: .04em;
  line-height: 1.6;
  color: rgba(16, 22, 20, .62);
}

/* 相关条目 */
.page-faq .faq-rel {
  margin-top: 16px;
  padding-top: 12px;
  border-top: 1px dashed rgba(16, 22, 20, .22);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: .04em;
  line-height: 1.7;
}

.page-faq .faq-rel__key {
  margin-right: 10px;
  color: var(--gold-dark);
}

.page-faq .faq-item__a .faq-rel a::before {
  content: "— ";
  color: var(--gold-dark);
}

/* 底部通道条 */
.page-faq .faq-gate {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px 28px;
  margin-top: clamp(28px, 4vw, 44px);
  padding: clamp(20px, 3vw, 30px) clamp(20px, 3vw, 32px);
  background-image: linear-gradient(120deg, rgba(30, 91, 74, .95), rgba(11, 43, 34, .72));
  border: 1px solid var(--line-gold);
}

.page-faq .faq-gate p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 239, 227, .86);
}

/* ============ 桌面端 ============ */
@media (min-width: 900px) {
  .page-faq .faq-body {
    grid-template-columns: var(--faq-rail) minmax(0, 1fr);
    gap: clamp(40px, 4.5vw, 72px);
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 96px;
    align-self: start;
  }

  .page-faq .faq-rail__list {
    display: block;
    padding: 0;
    overflow: visible;
    border-left: 1px solid rgba(201, 162, 39, .22);
  }

  .page-faq .faq-rail__list li + li {
    margin-top: 2px;
  }

  .page-faq .faq-rail__link {
    display: flex;
    width: 100%;
    padding: 10px 0 10px 16px;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    border-radius: 0;
    margin-left: -1px;
    line-height: 1.5;
  }

  .page-faq .faq-rail__link:hover,
  .page-faq .faq-rail__link:focus-visible {
    color: var(--gold-bright);
    background-color: transparent;
    border-left-color: var(--gold-bright);
  }

  .page-faq .faq-rail__link:hover .faq-rail__no,
  .page-faq .faq-rail__link:focus-visible .faq-rail__no {
    color: var(--gold-bright);
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item__mark::before,
  .page-faq .faq-item__mark::after,
  .page-faq .faq-item__q,
  .page-faq .faq-rail__link {
    transition: none;
  }
}