.page-faq {
  --faq-line: rgba(53, 224, 214, .3);
  --faq-ink-soft: rgba(27, 20, 16, .76);
  --faq-rule: rgba(27, 20, 16, .22);
  max-width: 100%;
  overflow-x: clip;
}

/* ---------- 面包屑留白 ---------- */
.page-faq .yf-crumbs {
  padding-top: 20px;
  padding-bottom: 4px;
}

/* ---------- 首屏 ---------- */
.page-faq .yf-faq-hero {
  padding-top: 12px;
}

.page-faq .yf-faq-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  justify-content: space-between;
  align-items: baseline;
  padding-bottom: 16px;
  border-bottom: 2px solid var(--faq-line);
  margin-bottom: 30px;
  color: var(--yf-cyan);
  font-size: 12px;
  letter-spacing: .08em;
}

.page-faq .yf-faq-hero__title {
  margin: 0 0 22px;
  font-weight: 300;
  font-size: clamp(34px, 7.2vw, 84px);
  line-height: 1.04;
  letter-spacing: -.02em;
  color: var(--yf-paper);
}

.page-faq .yf-faq-hero__lead {
  max-width: 60ch;
  margin: 0 0 26px;
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.78;
  color: var(--yf-slate);
}

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

.page-faq .yf-faq-hero__jump a {
  display: inline-block;
  padding: 8px 14px;
  border: 2px solid var(--yf-cyan);
  color: var(--yf-cyan);
  font-size: 12px;
  letter-spacing: .08em;
  text-decoration: none;
  transition: background .18s var(--yf-ease), color .18s var(--yf-ease);
}

.page-faq .yf-faq-hero__jump a:hover,
.page-faq .yf-faq-hero__jump a:focus-visible {
  background: var(--yf-cyan);
  color: var(--yf-night);
}

.page-faq .yf-faq-hero__media {
  margin: 0;
}

.page-faq .yf-faq-hero__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid rgba(53, 224, 214, .42);
  object-fit: cover;
}

.page-faq .yf-faq-hero__media .yf-media__caption {
  margin-top: 12px;
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--yf-slate);
}

/* ---------- 索引板 ---------- */
.page-faq .yf-faq-board__panel {
  padding: clamp(22px, 4vw, 44px);
}

.page-faq .yf-faq-board__panel .yf-panel__lead {
  max-width: 56ch;
}

/* ---------- 四格索引板 ---------- */
.page-faq .yf-tabs {
  margin-top: 30px;
}

.page-faq .yf-tabs__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  margin-bottom: 30px;
}

.page-faq .yf-tabs__tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 8px;
  padding: 16px 18px 18px;
  text-align: left;
  font: inherit;
  cursor: pointer;
  background: var(--yf-paper);
  color: var(--yf-cocoa);
  border: 2px solid var(--yf-cocoa);
  box-shadow: 6px 6px 0 0 rgba(27, 20, 16, .14);
  transition: transform .18s var(--yf-ease), box-shadow .18s var(--yf-ease),
              background-color .18s var(--yf-ease), color .18s var(--yf-ease);
}

.page-faq .yf-tabs__tab:hover {
  transform: translateY(-2px);
  box-shadow: 6px 9px 0 0 rgba(27, 20, 16, .22);
}

.page-faq .yf-tabs__tab[aria-selected="true"] {
  background: var(--yf-amber);
  color: var(--yf-cocoa);
  box-shadow: 6px 6px 0 0 var(--yf-cocoa);
  transform: none;
}

.page-faq .yf-tabs__tab:focus-visible {
  outline: 3px solid var(--yf-cyan);
  outline-offset: 2px;
}

.page-faq .yf-tabs__num {
  font-family: var(--yf-mono);
  font-size: 26px;
  font-weight: 700;
  line-height: 1;
  letter-spacing: .04em;
  color: var(--yf-teal);
}

.page-faq .yf-tabs__tab[aria-selected="true"] .yf-tabs__num {
  color: var(--yf-cocoa);
}

.page-faq .yf-tabs__label {
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
}

.page-faq .yf-tabs__hint {
  font-size: 13px;
  line-height: 1.55;
  color: var(--faq-ink-soft);
}

.page-faq .yf-tabs__tab[aria-selected="true"] .yf-tabs__hint {
  color: rgba(27, 20, 16, .82);
}

.page-faq .yf-tabs__panel {
  display: block;
}

.page-faq .yf-tabs__panel[hidden] {
  display: none;
}

/* ---------- 问答条目 ---------- */
.page-faq .yf-faq-list {
  display: grid;
  gap: 12px;
}

.page-faq .yf-faq-item {
  background: var(--yf-paper);
  border: 2px solid var(--yf-cocoa);
  box-shadow: 6px 6px 0 0 rgba(27, 20, 16, .13);
  transition: box-shadow .2s var(--yf-ease);
}

.page-faq .yf-faq-item[open] {
  box-shadow: 6px 6px 0 0 rgba(14, 139, 135, .45);
}

.page-faq .yf-faq-item__q {
  display: flex;
  align-items: baseline;
  gap: 14px;
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 17px;
  font-weight: 800;
  letter-spacing: -.01em;
  line-height: 1.5;
  color: var(--yf-cocoa);
}

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

.page-faq .yf-faq-item__q:focus-visible {
  outline: 3px solid var(--yf-cyan);
  outline-offset: -3px;
}

.page-faq .yf-faq-item__num {
  flex: none;
  padding-top: 2px;
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--yf-teal);
}

.page-faq .yf-faq-item__text {
  flex: 1 1 auto;
  min-width: 0;
}

.page-faq .yf-faq-item__sign {
  position: relative;
  flex: none;
  align-self: center;
  width: 16px;
  height: 16px;
}

.page-faq .yf-faq-item__sign::before,
.page-faq .yf-faq-item__sign::after {
  content: "";
  position: absolute;
  background: var(--yf-teal);
  transition: transform .18s var(--yf-ease), opacity .18s var(--yf-ease);
}

.page-faq .yf-faq-item__sign::before {
  left: 0;
  top: 7px;
  width: 16px;
  height: 2px;
}

.page-faq .yf-faq-item__sign::after {
  left: 7px;
  top: 0;
  width: 2px;
  height: 16px;
}

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

.page-faq .yf-faq-item__a {
  padding: 0 18px 18px 46px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .yf-faq-item__a p {
  margin: 0 0 10px;
}

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

/* ---------- 复制按钮 ---------- */
.page-faq .yf-faq-copy {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 10px;
  padding: 6px 12px;
  background: transparent;
  border: 2px solid var(--yf-teal);
  color: var(--yf-teal);
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .06em;
  cursor: pointer;
  transition: background-color .18s var(--yf-ease), color .18s var(--yf-ease);
}

.page-faq .yf-faq-copy:hover,
.page-faq .yf-faq-copy:focus-visible {
  background: var(--yf-teal);
  color: var(--yf-paper);
}

.page-faq .yf-faq-copy:focus-visible {
  outline: 3px solid var(--yf-cyan);
  outline-offset: 2px;
}

/* ---------- 安装与兼容：图文分栏 ---------- */
.page-faq .yf-faq-split {
  display: grid;
  gap: 22px;
}

.page-faq .yf-faq-split__media {
  margin: 0;
}

.page-faq .yf-faq-split__media img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  border: 2px solid var(--yf-cocoa);
  box-shadow: 8px 8px 0 0 rgba(14, 139, 135, .3);
  object-fit: cover;
}

.page-faq .yf-faq-split__cap {
  margin: 12px 0 0;
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--faq-ink-soft);
}

/* ---------- 转人工支持 ---------- */
.page-faq .yf-faq-support__card {
  padding: clamp(24px, 4vw, 46px);
  background: var(--yf-cream);
  color: var(--yf-cocoa);
  border: 2px solid var(--yf-cocoa);
  box-shadow: 10px 10px 0 0 rgba(53, 224, 214, .34);
}

.page-faq .yf-faq-support__card .yf-panel__lead {
  max-width: 56ch;
}

.page-faq .yf-faq-support__rows {
  margin: 26px 0 20px;
  border-top: 2px solid var(--faq-rule);
}

.page-faq .yf-faq-support__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
  padding: 16px 0;
  border-bottom: 2px solid var(--faq-rule);
}

.page-faq .yf-faq-support__key {
  flex: none;
  min-width: 72px;
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--yf-amber-ink);
}

.page-faq .yf-faq-support__val {
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 700;
  letter-spacing: -.01em;
  color: var(--yf-cocoa);
  word-break: break-word;
}

.page-faq .yf-faq-support__row .yf-faq-copy {
  margin-top: 0;
  margin-left: auto;
}

.page-faq .yf-faq-support__note {
  max-width: 62ch;
  margin: 0 0 24px;
  font-size: 14px;
  line-height: 1.8;
  color: var(--faq-ink-soft);
}

.page-faq .yf-faq-support__btn {
  display: inline-block;
}

/* ---------- 相关内容 ---------- */
.page-faq .yf-faq-more__title {
  margin: 0 0 16px;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--yf-cyan);
}

.page-faq .yf-faq-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-faq .yf-faq-links a {
  display: inline-block;
  padding: 8px 14px;
  border: 2px solid rgba(53, 224, 214, .55);
  color: var(--yf-cyan);
  font-family: var(--yf-mono);
  font-size: 12px;
  letter-spacing: .06em;
  text-decoration: none;
  transition: background-color .18s var(--yf-ease), color .18s var(--yf-ease);
}

.page-faq .yf-faq-links a:hover,
.page-faq .yf-faq-links a:focus-visible {
  background: var(--yf-cyan);
  color: var(--yf-night);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-faq .yf-tabs__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px) {
  .page-faq .yf-faq-split {
    grid-template-columns: minmax(0, 1.35fr) minmax(0, 1fr);
    align-items: start;
    gap: 30px;
  }
}

@media (min-width: 1024px) {
  .page-faq .yf-tabs__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

  .page-faq .yf-faq-hero__meta {
    padding-bottom: 20px;
    margin-bottom: 38px;
  }
}

@media (max-width: 639px) {
  .page-faq .yf-faq-item__a {
    padding-left: 18px;
  }

  .page-faq .yf-faq-item__q {
    gap: 10px;
    font-size: 16px;
  }

  .page-faq .yf-faq-support__row .yf-faq-copy {
    margin-left: 0;
  }

  .page-faq .yf-faq-support__val {
    font-size: 16px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .yf-tabs__tab,
  .page-faq .yf-faq-item,
  .page-faq .yf-faq-copy,
  .page-faq .yf-faq-links a,
  .page-faq .yf-faq-hero__jump a,
  .page-faq .yf-faq-item__sign::before,
  .page-faq .yf-faq-item__sign::after {
    transition: none;
  }

  .page-faq .yf-tabs__tab:hover {
    transform: none;
  }
}