.page-faq {
  --faq-line-offset: 10px;
  padding-block: 26px 72px;
  min-width: 0;
  overflow-wrap: break-word;
}

/* 面包屑 */
.page-faq .crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 22px;
}

.page-faq .crumbs .link {
  color: var(--muted);
}

.page-faq .crumbs .link:hover,
.page-faq .crumbs .link:focus-visible {
  color: var(--cyan);
}

/* 首屏 */
.page-faq .faq-intro {
  border-bottom: 1px solid var(--line);
  padding-bottom: 26px;
  margin-bottom: 30px;
}

.page-faq .faq-intro .kicker {
  color: var(--cyan);
  letter-spacing: 0.14em;
}

.page-faq .faq-intro .display {
  margin: 12px 0 16px;
  max-width: 22ch;
}

.page-faq .faq-intro .lede {
  max-width: 64ch;
  margin: 0 0 22px;
}

.page-faq .faq-intro__facts {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 32px;
}

.page-faq .faq-fact {
  display: flex;
  align-items: baseline;
  gap: 9px;
}

.page-faq .faq-fact .num {
  font-size: 26px;
  line-height: 1;
  color: var(--ink);
}

.page-faq .faq-fact__label {
  font-size: 13px;
  color: var(--muted);
}

/* 双栏 */
.page-faq .faq-split {
  min-width: 0;
}

.page-faq .faq-main {
  display: grid;
  gap: 18px;
  min-width: 0;
}

/* 左侧目录 */
.page-faq .faq-rail {
  align-self: start;
  min-width: 0;
  margin-bottom: 24px;
}

.page-faq .faq-rail__title {
  color: var(--cyan);
  margin: 0 0 12px;
}

.page-faq .faq-rail__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-faq .faq-rail__link {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.55;
  text-decoration: none;
  transition: color 180ms var(--ease), border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-rail__link:hover,
.page-faq .faq-rail__link:focus-visible {
  color: var(--ink);
  border-left-color: var(--cyan);
  background-color: rgba(53, 230, 208, 0.06);
}

.page-faq .faq-rail__idx {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  flex: none;
}

.page-faq .faq-rail__note {
  margin: 14px 0 0;
  padding-left: 10px;
  border-left: 1px solid var(--line);
}

/* 分组 */
.page-faq .faq-group {
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 16px;
  scroll-margin-top: 88px;
  min-width: 0;
}

.page-faq .faq-group__head {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-faq .faq-group__idx {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1;
  color: var(--cyan);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 5px 6px;
  margin-top: 4px;
}

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

.page-faq .faq-group .section-title {
  margin: 0;
}

.page-faq .faq-group__lead {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
}

/* 三步路径 */
.page-faq .faq-steps {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-faq .faq-steps__item {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding-left: 2px;
}

.page-faq .faq-steps__item:not(:last-child)::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 24px;
  bottom: -12px;
  width: 1px;
  background-image: linear-gradient(to bottom, var(--line) 55%, transparent 55%);
  background-size: 1px 8px;
}

.page-faq .faq-steps__num {
  flex: none;
  width: 19px;
  height: 19px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--abyss);
  background-color: var(--cyan);
  position: relative;
  z-index: 1;
}

.page-faq .faq-steps__text {
  font-size: 14px;
  line-height: 1.65;
  color: var(--ink);
}

/* 问答组 */
.page-faq .faq-group__body {
  display: grid;
  gap: 8px;
  margin-top: 16px;
}

.page-faq .faq-item {
  background-color: var(--layer);
  border: 1px solid var(--line);
  border-left: 2px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .faq-item[open] {
  border-left-color: var(--cyan);
}

.page-faq .faq-item:hover {
  border-color: var(--cyan-deep);
  border-left-color: var(--cyan-deep);
}

.page-faq .faq-item[open]:hover {
  border-left-color: var(--cyan);
}

.page-faq .faq-item__q {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 14px;
  padding: 13px 14px;
  font-family: var(--font-serif);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--ink);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  flex: none;
  font-family: var(--font-mono);
  font-size: 17px;
  line-height: 1;
  color: var(--cyan);
  padding-top: 3px;
}

.page-faq .faq-item[open] > .faq-item__q::after {
  content: "−";
}

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

.page-faq .faq-item__a {
  padding: 0 14px 15px;
}

.page-faq .faq-item__a p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.78;
  color: var(--muted);
}

.page-faq .faq-item__a p + p {
  margin-top: 10px;
}

/* 状态图例 */
.page-faq .legend {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.page-faq .legend__item {
  display: grid;
  grid-template-columns: 10px 1fr;
  grid-template-areas:
    "chip label"
    ". tip";
  gap: 2px 11px;
  align-items: center;
  padding: 10px 12px;
  background-color: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color 180ms var(--ease), background-color 180ms var(--ease);
}

.page-faq .legend__item:hover,
.page-faq .legend__item:focus-visible {
  border-color: var(--cyan-deep);
  background-color: var(--layer);
  outline: none;
}

.page-faq .legend__chip {
  grid-area: chip;
  width: 10px;
  height: 10px;
  border-radius: 2px;
}

.page-faq .legend__chip--amber {
  background-color: var(--amber);
}

.page-faq .legend__chip--cyan {
  background-color: var(--cyan);
}

.page-faq .legend__chip--deep {
  background-color: var(--cyan-deep);
}

.page-faq .legend__label {
  grid-area: label;
  font-size: 14px;
  color: var(--ink);
}

.page-faq .legend__tip {
  grid-area: tip;
  font-size: 13px;
  line-height: 1.6;
  color: var(--muted);
}

/* 配图 */
.page-faq .faq-figure {
  margin: 16px 0 0;
}

.page-faq .faq-figure .media {
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-figure figcaption {
  margin-top: 9px;
  font-size: 12.5px;
  line-height: 1.65;
  color: var(--muted);
}

.page-faq .faq-figure--square {
  max-width: 420px;
}

/* 联系信息 */
.page-faq .faq-contact {
  display: grid;
  gap: 10px;
  margin-top: 18px;
  padding: 16px 14px;
  background-color: var(--layer);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.page-faq .faq-contact__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  align-items: baseline;
}

.page-faq .faq-contact__key {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  min-width: 68px;
}

.page-faq .faq-contact__val {
  font-size: 14px;
  color: var(--ink);
  line-height: 1.6;
}

.page-faq .faq-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 16px;
}

/* 平板与桌面 */
@media (min-width: 900px) {
  .page-faq .faq-intro {
    padding-bottom: 32px;
    margin-bottom: 36px;
  }

  .page-faq .faq-intro .display {
    font-size: 52px;
    margin-top: 14px;
  }

  .page-faq .faq-rail {
    position: sticky;
    top: 88px;
    margin-bottom: 0;
    padding-right: 8px;
    border-right: 1px solid var(--line);
  }

  .page-faq .faq-group {
    padding: 24px 22px;
  }

  .page-faq .faq-steps {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
  }

  .page-faq .faq-steps__item:not(:last-child)::before {
    left: auto;
    right: -8px;
    top: 9px;
    bottom: auto;
    width: 16px;
    height: 1px;
    background-image: none;
    background-color: var(--line);
  }

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

  .page-faq .legend__item {
    grid-template-columns: 10px 1fr;
    grid-template-areas:
      "chip label"
      ". tip";
  }

  .page-faq .faq-item__q {
    font-size: 16px;
    padding: 14px 18px;
  }

  .page-faq .faq-item__a {
    padding: 0 18px 17px;
  }
}

@media (min-width: 1280px) {
  .page-faq .faq-group__lead {
    font-size: 14.5px;
  }

  .page-faq .faq-figure--square {
    max-width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-rail__link,
  .page-faq .faq-item,
  .page-faq .legend__item {
    transition: none;
  }
}