.page-faq {
  --faq-edge: 2px solid var(--grid);
  color: var(--text);
  font-family: var(--font-sans);
  padding-bottom: clamp(48px, 8vw, 120px);
}

.page-faq .breadcrumb {
  margin: 0 0 clamp(20px, 3vw, 34px);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--steel);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  display: grid;
  gap: 28px;
  padding-bottom: clamp(36px, 6vw, 72px);
}

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

.page-faq .faq-hero h1 {
  margin: 10px 0 18px;
  font-size: clamp(42px, 11vw, 92px);
  font-weight: 900;
  line-height: .94;
  letter-spacing: -.02em;
  color: var(--white);
}

.page-faq .faq-hero .lede {
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text);
}

.page-faq .faq-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 26px;
  margin: 30px 0 0;
  padding: 16px 0 0;
  list-style: none;
  border-top: 1px dashed var(--grid);
  font-size: 13px;
  color: var(--steel);
}

.page-faq .faq-hero__stats b {
  display: inline-block;
  margin-right: 8px;
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 700;
  color: var(--green);
}

.page-faq .faq-hero__media {
  margin: 0;
  border: var(--faq-edge);
}

/* ---------- 通用区块 ---------- */
.page-faq .faq-block {
  padding: clamp(40px, 6vw, 78px) 0;
  border-top: var(--faq-edge);
}

.page-faq .faq-block--quiet {
  background: var(--panel);
  padding-left: clamp(18px, 3vw, 40px);
  padding-right: clamp(18px, 3vw, 40px);
}

.page-faq .faq-block__head {
  display: grid;
  gap: 10px;
  max-width: 62ch;
}

.page-faq .faq-block__head h2 {
  margin: 0;
  font-size: clamp(26px, 5.4vw, 42px);
  font-weight: 900;
  line-height: 1.14;
  letter-spacing: -.01em;
  color: var(--white);
}

.page-faq .faq-block__head p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--steel);
}

.page-faq .faq-block__head a,
.page-faq .qa__a a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* ---------- 分类总览 ---------- */
.page-faq .faq-cats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  margin-top: 32px;
}

.page-faq .faq-cat {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 24px 20px 20px;
  border: var(--faq-edge);
  background: var(--panel);
  color: var(--text);
  text-decoration: none;
  transition: transform .22s var(--ease), border-color .22s var(--ease);
}

.page-faq .faq-cat::before {
  content: "";
  position: absolute;
  top: -2px;
  left: -2px;
  width: 36px;
  height: 4px;
  background: var(--cyan);
}

.page-faq .faq-cat:nth-child(2)::before { background: var(--green); }
.page-faq .faq-cat:nth-child(3)::before { background: var(--purple); }
.page-faq .faq-cat:nth-child(4)::before { background: var(--orange); }

.page-faq .faq-cat:hover,
.page-faq .faq-cat:focus-visible {
  border-color: var(--cyan);
  transform: translate(-2px, -2px);
  outline: none;
}

.page-faq .faq-cat__idx {
  font-size: 11px;
  letter-spacing: .1em;
  color: var(--steel);
}

.page-faq .faq-cat__title {
  margin: 0;
  font-size: 20px;
  font-weight: 800;
  line-height: 1.3;
  color: var(--white);
}

.page-faq .faq-cat__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text);
}

.page-faq .faq-cat__count {
  margin-top: auto;
  padding-top: 14px;
  font-size: 12px;
  letter-spacing: .06em;
  color: var(--green);
}

/* ---------- 字段说明条 ---------- */
.page-faq .faq-fields {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: var(--faq-edge);
}

.page-faq .faq-field {
  display: grid;
  gap: 8px;
  padding: 20px;
  background: var(--panel-2);
}

.page-faq .faq-field__key {
  font-size: 11px;
  letter-spacing: .12em;
  color: var(--cyan);
}

.page-faq .faq-field__val {
  font-size: 17px;
  font-weight: 800;
  color: var(--white);
}

.page-faq .faq-field__note {
  font-size: 14px;
  line-height: 1.75;
  color: var(--steel);
}

/* ---------- 问答条目 ---------- */
.page-faq .qa-list {
  display: grid;
  gap: 12px;
  margin-top: 28px;
}

.page-faq .qa {
  background: var(--paper);
  border: 2px solid var(--panel);
  box-shadow: 4px 4px 0 rgba(34, 224, 214, .35);
  transition: box-shadow .24s var(--ease), transform .24s var(--ease);
}

.page-faq .qa:hover {
  transform: translate(-1px, -1px);
}

.page-faq .qa[open] {
  box-shadow: 5px 5px 0 var(--cyan);
}

.page-faq .qa summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 12px;
  padding: 17px 18px;
  list-style: none;
  cursor: pointer;
  font-size: 15px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--panel);
}

.page-faq .qa summary::-webkit-details-marker { display: none; }
.page-faq .qa summary::marker { content: ""; }

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

.page-faq .qa__idx {
  padding: 3px 7px;
  background: var(--panel);
  color: var(--green);
  font-size: 11px;
  letter-spacing: .06em;
}

.page-faq .qa__mark {
  position: relative;
  flex: none;
  width: 16px;
  height: 16px;
  color: var(--panel);
}

.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: currentColor;
}

.page-faq .qa__mark::before {
  top: 50%;
  left: 0;
  right: 0;
  height: 2px;
  transform: translateY(-50%);
}

.page-faq .qa__mark::after {
  top: 0;
  bottom: 0;
  left: 50%;
  width: 2px;
  transform: translateX(-50%);
  transition: transform .24s var(--ease);
}

.page-faq .qa[open] .qa__mark::after {
  transform: translateX(-50%) scaleY(0);
}

.page-faq .qa__a {
  padding: 0 18px 20px;
  font-size: 14px;
  line-height: 1.82;
  color: var(--panel);
}

.page-faq .qa__a p {
  margin: 0;
}

.page-faq .qa__a a {
  color: var(--panel);
  font-weight: 700;
}

/* ---------- 公告配图 ---------- */
.page-faq .faq-figure {
  margin: 30px 0 0;
  border: var(--faq-edge);
}

/* ---------- 联系方式 ---------- */
.page-faq .faq-contact__list {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin: 30px 0 26px;
  padding: 0;
  list-style: none;
  background: var(--grid);
  border: var(--faq-edge);
}

.page-faq .faq-contact__item {
  display: grid;
  gap: 6px;
  padding: 18px 20px;
  background: var(--panel);
}

.page-faq .faq-contact__label {
  font-size: 11px;
  letter-spacing: .14em;
  color: var(--purple);
}

.page-faq .faq-contact__value {
  font-size: 16px;
  font-weight: 700;
  color: var(--white);
  word-break: break-word;
}

.page-faq .faq-contact__cta {
  justify-self: start;
}

/* ---------- 响应式 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-faq .faq-hero {
    grid-template-columns: minmax(0, 6fr) minmax(0, 5fr);
    align-items: end;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-faq .faq-hero__media {
    align-self: start;
  }

  .page-faq .qa summary {
    padding: 19px 22px;
    font-size: 16px;
  }

  .page-faq .qa__a {
    padding: 0 22px 22px;
  }
}

@media (min-width: 1200px) {
  .page-faq .faq-cats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

  .page-faq .faq-block__head {
    max-width: 70ch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-cat,
  .page-faq .qa,
  .page-faq .qa__mark::after {
    transition: none;
  }

  .page-faq .faq-cat:hover,
  .page-faq .qa:hover {
    transform: none;
  }
}