.page-faq {
  --faq-pad: clamp(16px, 4vw, 40px);
  --faq-gap: clamp(20px, 3vw, 36px);
  position: relative;
  background:
    linear-gradient(180deg, rgba(11, 31, 26, .65), rgba(16, 20, 18, 0) 380px),
    var(--yb-charcoal);
  color: var(--yb-ink);
  padding-top: calc(var(--yb-bar-h) + 26px);
  padding-bottom: clamp(48px, 8vw, 96px);
  overflow-x: clip;
  font-family: var(--yb-font-body);
}

.page-faq .yb-container {
  width: 100%;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--faq-pad);
  box-sizing: border-box;
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
  max-width: 1280px;
  margin-inline: auto;
  padding-inline: var(--faq-pad);
  margin-bottom: 20px;
  box-sizing: border-box;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  position: relative;
  padding-top: 6px;
}

.page-faq .faq-hero__title {
  font-family: var(--yb-font-display);
  font-weight: 800;
  font-size: clamp(30px, 5.6vw, 62px);
  line-height: 1.02;
  letter-spacing: -.01em;
  color: var(--yb-paper);
  margin: 12px 0 18px;
  max-width: 18ch;
}

.page-faq .faq-hero__title::after {
  content: "";
  display: block;
  width: 104px;
  height: 8px;
  margin-top: 20px;
  background: var(--yb-lime);
  clip-path: polygon(0 0, 100% 0, calc(100% - 9px) 100%, 0 100%);
}

.page-faq .faq-hero__lede {
  max-width: 64ch;
  font-size: clamp(15px, 1.6vw, 17.5px);
  line-height: 1.75;
  color: var(--yb-ink);
  margin: 0;
}

.page-faq .faq-hero__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-faq .faq-chip {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  font-family: var(--yb-font-data);
  font-size: 12px;
  letter-spacing: .02em;
  color: var(--yb-mute);
  border: 1px solid var(--yb-wire);
  background: rgba(22, 38, 31, .7);
  padding: 8px 14px;
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-chip b {
  font-size: 15px;
  font-weight: 700;
  color: var(--yb-lime);
}

.page-faq .faq-hero__media {
  margin: clamp(26px, 4vw, 44px) 0 0;
  border-radius: var(--yb-r-l);
  overflow: hidden;
  border: 1px solid var(--yb-wire);
}

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

.page-faq .faq-hero__media .yb-media__cap {
  font-family: var(--yb-font-data);
  font-size: 11.5px;
  letter-spacing: .06em;
  color: var(--yb-mute);
}

/* ---------- 索引 + 正文 布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--faq-gap);
  align-items: start;
  margin-top: clamp(32px, 5vw, 60px);
}

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

.page-faq .faq-index {
  border: 1px solid var(--yb-wire);
  background: var(--yb-charcoal);
  border-radius: var(--yb-r-s);
  overflow: hidden;
}

.page-faq .faq-index__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 13px 14px;
  cursor: pointer;
  list-style: none;
  font-family: var(--yb-font-data);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--yb-lime);
  background: linear-gradient(90deg, rgba(200, 255, 61, .14), transparent 76%);
}

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

.page-faq .faq-index__count {
  font-size: 11px;
  color: var(--yb-mute);
  margin-left: auto;
}

.page-faq .faq-index__sum::after {
  content: "";
  flex: none;
  width: 8px;
  height: 8px;
  margin-left: 8px;
  border-right: 2px solid var(--yb-lime);
  border-bottom: 2px solid var(--yb-lime);
  transform: rotate(45deg);
  transition: transform .2s var(--yb-ease);
}

.page-faq .faq-index[open] .faq-index__sum::after {
  transform: rotate(-135deg);
}

.page-faq .faq-index__nav {
  display: grid;
  gap: 2px;
  padding: 6px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 10px;
  align-items: baseline;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: 8px;
  color: var(--yb-ink);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.45;
  transition: background .16s var(--yb-ease), color .16s var(--yb-ease), border-color .16s var(--yb-ease), transform .16s var(--yb-ease);
}

.page-faq .faq-index__link:hover {
  background: var(--yb-slate);
  color: var(--yb-paper);
  border-left-color: var(--yb-lime);
  transform: translateX(2px);
}

.page-faq .faq-index__link:focus-visible {
  outline: 2px solid var(--yb-lime);
  outline-offset: 2px;
}

.page-faq .faq-index__i {
  font-family: var(--yb-font-data);
  font-size: 11px;
  color: var(--yb-mute);
}

/* ---------- 内容块 ---------- */
.page-faq .faq-body {
  display: grid;
  gap: clamp(26px, 4vw, 48px);
  min-width: 0;
}

.page-faq .faq-block {
  position: relative;
  min-width: 0;
  border-top: 1px solid var(--yb-wire);
  padding-top: clamp(20px, 3vw, 32px);
  scroll-margin-top: calc(var(--yb-bar-h) + 24px);
}

.page-faq .faq-block::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 72px;
  height: 2px;
  background: linear-gradient(90deg, var(--yb-lime), transparent);
}

.page-faq .faq-block__idx {
  margin: 0 0 10px;
  font-family: var(--yb-font-data);
  font-size: 11.5px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--yb-mute);
}

.page-faq .faq-block__lede {
  max-width: 68ch;
  margin: 0 0 20px;
  font-size: 15.5px;
  line-height: 1.78;
  color: var(--yb-ink);
}

/* ---------- 步骤 ---------- */
.page-faq .faq-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 12px;
}

.page-faq .faq-step {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 14px;
  padding: 14px 16px;
  background: var(--yb-slate);
  border: 1px solid var(--yb-wire);
  border-radius: var(--yb-r-s);
  transition: transform .16s var(--yb-ease), border-color .16s var(--yb-ease), box-shadow .16s var(--yb-ease);
}

.page-faq .faq-step:hover {
  transform: translateY(-2px);
  border-color: var(--yb-lime);
  box-shadow: var(--yb-shadow);
}

.page-faq .faq-step__num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: none;
  background: var(--yb-lime);
  color: var(--yb-charcoal);
  font-family: var(--yb-font-data);
  font-size: 14px;
  font-weight: 700;
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 10px), calc(100% - 10px) 100%, 0 100%);
}

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

.page-faq .faq-step__body .yb-h3 {
  margin: 5px 0 6px;
  font-size: 16px;
  line-height: 1.4;
  color: var(--yb-paper);
}

.page-faq .faq-step__body p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.72;
  color: var(--yb-ink);
}

/* ---------- 图 + 步骤 分栏 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  align-items: start;
}

.page-faq .faq-split__media {
  margin: 0;
  border: 1px solid var(--yb-wire);
  border-radius: var(--yb-r-s);
  overflow: hidden;
  background: var(--yb-charcoal);
}

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

/* ---------- 筛选标签 ---------- */
.page-faq .faq-filters {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin-top: 20px;
}

.page-faq .faq-filters__label {
  margin-right: 4px;
  font-family: var(--yb-font-data);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--yb-mute);
}

.page-faq .faq-filter {
  font-family: var(--yb-font-data);
  font-size: 12px;
  padding: 8px 15px;
  background: var(--yb-charcoal);
  color: var(--yb-ink);
  border: 1px solid var(--yb-wire);
  clip-path: polygon(0 0, 100% 0, calc(100% - 10px) 100%, 0 100%);
}

.page-faq .faq-filter--on {
  background: var(--yb-lime);
  border-color: var(--yb-lime);
  color: var(--yb-charcoal);
  font-weight: 700;
}

.page-faq .faq-filter--blue {
  background: rgba(53, 208, 255, .14);
  border-color: var(--yb-blue);
  color: var(--yb-blue);
}

/* ---------- 同分排序规则 ---------- */
.page-faq .faq-rule {
  margin-top: 20px;
  padding: 16px 18px;
  background: linear-gradient(135deg, rgba(53, 208, 255, .1), transparent 62%), var(--yb-charcoal);
  border: 1px solid var(--yb-wire);
  border-left: 3px solid var(--yb-blue);
  border-radius: 0 var(--yb-r-s) var(--yb-r-s) 0;
}

.page-faq .faq-rule__title {
  margin: 0;
  font-family: var(--yb-font-data);
  font-size: 11.5px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--yb-blue);
}

.page-faq .faq-rule__chain {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px 10px;
  margin: 12px 0 0;
  padding: 0;
}

.page-faq .faq-rule__chain li {
  font-family: var(--yb-font-data);
  font-size: 13px;
  color: var(--yb-paper);
}

.page-faq .faq-rule__chain li:not(:last-child)::after {
  content: "→";
  margin-left: 10px;
  color: var(--yb-orange);
}

.page-faq .faq-rule__desc {
  margin: 12px 0 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--yb-mute);
}

/* ---------- 更新节奏时间槽 ---------- */
.page-faq .faq-timeline {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-faq .faq-slot {
  padding: 14px 14px 18px;
  background: var(--yb-charcoal);
  border: 1px solid var(--yb-wire);
  border-top: 3px solid var(--yb-wire);
  border-radius: 0 0 var(--yb-r-s) var(--yb-r-s);
}

.page-faq .faq-slot--lime {
  border-top-color: var(--yb-lime);
}

.page-faq .faq-slot--blue {
  border-top-color: var(--yb-blue);
}

.page-faq .faq-slot--orange {
  border-top-color: var(--yb-orange);
}

.page-faq .faq-slot--amber {
  border-top-color: var(--yb-amber);
}

.page-faq .faq-slot__when {
  margin: 0;
  font-family: var(--yb-font-data);
  font-size: 13.5px;
  letter-spacing: .02em;
  color: var(--yb-paper);
}

.page-faq .faq-slot__what {
  margin: 10px 0 0;
  font-size: 13.5px;
  line-height: 1.68;
  color: var(--yb-mute);
}

/* ---------- 提示条 ---------- */
.page-faq .faq-note {
  margin: 20px 0 0;
  padding: 14px 16px;
  font-size: 14px;
  line-height: 1.72;
  color: var(--yb-ink);
  background: rgba(22, 38, 31, .55);
  border: 1px dashed var(--yb-wire);
  border-radius: var(--yb-r-s);
}

.page-faq .faq-note strong {
  color: var(--yb-amber);
  font-weight: 700;
}

/* ---------- 联系方式卡 ---------- */
.page-faq .faq-contact {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
  margin-top: 20px;
}

.page-faq .faq-contact-card {
  padding: 16px;
  background: var(--yb-slate);
  border: 1px solid var(--yb-wire);
  border-radius: var(--yb-r-s);
}

.page-faq .faq-contact-card__k {
  margin: 0;
  font-family: var(--yb-font-data);
  font-size: 11px;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--yb-mute);
}

.page-faq .faq-contact-card__v {
  margin: 10px 0 0;
  font-family: var(--yb-font-data);
  font-size: 15px;
  color: var(--yb-paper);
  word-break: break-word;
}

/* ---------- 页面动作 ---------- */
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 24px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-faq .faq-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .faq-contact {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 860px) {
  .page-faq .faq-split {
    grid-template-columns: minmax(0, 1fr) 250px;
  }
}

@media (min-width: 1000px) {
  .page-faq .faq-layout {
    grid-template-columns: 250px minmax(0, 1fr);
  }

  .page-faq .faq-index-wrap {
    position: sticky;
    top: calc(var(--yb-bar-h) + 20px);
  }
}

@media (min-width: 1100px) {
  .page-faq {
    padding-left: var(--yb-rail-w);
  }
}

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

  .page-faq .faq-step:hover,
  .page-faq .faq-index__link:hover {
    transform: none;
  }
}