/* ===== 页面作用域：数据问答 /faqs/ ===== */
.page-faq {
  --faq-card: #ffffff;
  --faq-rule: rgba(201, 214, 226, 0.9);
  --faq-cyan-line: rgba(0, 224, 208, 0.24);
  background: var(--mist);
  color: var(--text);
  font-family: var(--font-sans);
}

.page-faq .faq-wrap {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 var(--shell-x);
}

/* ---------- 面包屑 ---------- */
.page-faq .faq-breadcrumb {
  padding: 22px 0 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text-dim);
}
.page-faq .faq-breadcrumb a {
  color: var(--cyan-deep);
  text-decoration: none;
}
.page-faq .faq-breadcrumb a:hover {
  text-decoration: underline;
}
.page-faq .faq-breadcrumb .breadcrumb__sep {
  margin: 0 8px;
  color: var(--grid);
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 26px 0 0;
}
.page-faq .faq-hero__grid {
  display: grid;
  gap: 22px;
}
.page-faq .faq-figure {
  margin: 0;
  border: 1px solid var(--hair);
  background: var(--ink);
}
.page-faq .faq-figure img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}
.page-faq .faq-hero__eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--cyan-deep);
}
.page-faq .faq-hero__title {
  margin: 0 0 16px;
  font-size: clamp(28px, 6vw, 46px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: -0.02em;
  color: var(--text);
}
.page-faq .faq-hero__lead {
  margin: 0;
  max-width: 44em;
  font-size: 16px;
  line-height: 1.78;
  color: var(--text-soft);
}

/* ---------- 数据条 ---------- */
.page-faq .faq-strip {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  margin-top: 28px;
  background: linear-gradient(118deg, var(--ink) 0%, var(--fdb-deep) 58%, var(--fdb) 100%);
  border: 1px solid var(--fdb-deep);
}
.page-faq .faq-strip__cell {
  padding: 18px 16px;
  border-right: 1px solid var(--faq-cyan-line);
  border-bottom: 1px solid var(--faq-cyan-line);
}
.page-faq .faq-strip__cell:nth-child(2n) {
  border-right: 0;
}
.page-faq .faq-strip__cell:nth-child(n + 3) {
  border-bottom: 0;
}
.page-faq .faq-strip__num {
  display: block;
  margin-bottom: 8px;
  font-family: var(--font-mono);
  font-size: clamp(24px, 6vw, 32px);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}
.page-faq .faq-strip__label {
  display: block;
  font-size: 13px;
  line-height: 1.5;
  color: var(--on-dark-soft);
}

/* ---------- 主体两栏布局 ---------- */
.page-faq .faq-layout {
  display: grid;
  gap: 26px;
  padding: 38px 0 66px;
}

/* 分类锚点栏 */
.page-faq .faq-index__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.18em;
  color: var(--text-dim);
}
.page-faq .faq-index__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.page-faq .faq-index__item {
  flex: 0 0 auto;
}
.page-faq .faq-index__link {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 1px solid var(--hair);
  background: var(--faq-card);
  color: var(--text);
  font-size: 13px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: border-color 180ms var(--ease), color 180ms var(--ease);
}
.page-faq .faq-index__link:hover {
  border-color: var(--cyan-deep);
  color: var(--cyan-deep);
}
.page-faq .faq-index__no {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--cyan-deep);
}

/* ---------- 章节 ---------- */
.page-faq .faq-section {
  margin-bottom: 50px;
  scroll-margin-top: 24px;
}
.page-faq .faq-section:last-of-type {
  margin-bottom: 0;
}
.page-faq .section-head {
  margin-bottom: 18px;
}

/* ---------- 折叠问答 ---------- */
.page-faq .qa-list {
  border-top: 1px solid var(--faq-rule);
}
.page-faq .qa {
  background: var(--faq-card);
  border-bottom: 1px solid var(--faq-rule);
}
.page-faq .qa__summary {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 15px 14px;
  cursor: pointer;
  list-style: none;
  transition: background 180ms var(--ease);
}
.page-faq .qa__summary::-webkit-details-marker {
  display: none;
}
.page-faq .qa__summary:hover {
  background: var(--haze);
}
.page-faq .qa[open] > .qa__summary {
  box-shadow: inset 2px 0 0 var(--cyan);
}
.page-faq .qa__no {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.65;
  color: var(--cyan-deep);
}
.page-faq .qa__q {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 16px;
  font-weight: 600;
  line-height: 1.6;
  letter-spacing: -0.01em;
  color: var(--text);
}
.page-faq .qa__mark {
  position: relative;
  flex: 0 0 14px;
  width: 14px;
  height: 14px;
  margin-top: 6px;
}
.page-faq .qa__mark::before,
.page-faq .qa__mark::after {
  content: "";
  position: absolute;
  background: var(--fdb);
}
.page-faq .qa__mark::before {
  top: 6px;
  left: 0;
  width: 14px;
  height: 1.5px;
}
.page-faq .qa__mark::after {
  top: 0;
  left: 6px;
  width: 1.5px;
  height: 14px;
  transition: transform 180ms var(--ease);
}
.page-faq .qa[open] .qa__mark::after {
  transform: scaleY(0);
}
.page-faq .qa__body {
  padding: 0 16px 16px 16px;
}
.page-faq .qa__body p {
  margin: 0;
  font-size: 15px;
  line-height: 1.78;
  color: var(--text-soft);
}
.page-faq .qa__body a {
  color: var(--cyan-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-faq .qa-list--compact .qa__summary {
  padding: 13px 14px;
}
.page-faq .qa-list--compact .qa__q {
  font-size: 15px;
  font-weight: 500;
}

/* ---------- 统计与标记章节的内嵌图 ---------- */
.page-faq .faq-rules {
  display: grid;
  gap: 20px;
}
.page-faq .faq-figure--inline {
  border-color: var(--hair);
  background: var(--faq-card);
}
.page-faq .faq-figure__cap,
.page-faq .faq-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--hair);
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.04em;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ---------- 合作方式卡片 ---------- */
.page-faq .faq-modes {
  display: grid;
  gap: 14px;
  margin-bottom: 22px;
}
.page-faq .faq-mode {
  padding: 18px 16px 20px;
  background: var(--faq-card);
  border: 1px solid var(--hair);
  border-top: 2px solid var(--fdb);
}
.page-faq .faq-mode:nth-child(2) {
  border-top-color: var(--cyan);
}
.page-faq .faq-mode:nth-child(3) {
  border-top-color: var(--orange);
}
.page-faq .faq-mode__no {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--text-dim);
}
.page-faq .faq-mode__title {
  margin: 0 0 8px;
  font-size: 17px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--text);
}
.page-faq .faq-mode__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--text-soft);
}

/* ---------- 底部行动条 ---------- */
.page-faq .faq-cta {
  display: grid;
  gap: 18px;
  margin-top: 42px;
  padding: 24px 20px;
  background: var(--ink);
  border-top: 2px solid var(--cyan);
}
.page-faq .faq-cta__title {
  margin: 0 0 8px;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--on-dark);
}
.page-faq .faq-cta__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.72;
  color: var(--on-dark-soft);
}
.page-faq .faq-cta__btn {
  justify-self: start;
}

/* ---------- 平板 ---------- */
@media (min-width: 760px) {
  .page-faq .faq-strip {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 34px;
  }
  .page-faq .faq-strip__cell {
    padding: 22px 20px;
    border-right: 1px solid var(--faq-cyan-line);
    border-bottom: 0;
  }
  .page-faq .faq-strip__cell:nth-child(2n) {
    border-right: 1px solid var(--faq-cyan-line);
  }
  .page-faq .faq-strip__cell:last-child {
    border-right: 0;
  }
  .page-faq .qa__summary {
    gap: 16px;
    padding: 17px 20px 17px 18px;
  }
  .page-faq .qa__body {
    padding: 0 24px 18px 52px;
  }
  .page-faq .faq-modes {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
  .page-faq .faq-cta {
    grid-template-columns: 1fr auto;
    align-items: center;
    padding: 28px 32px;
  }
  .page-faq .faq-cta__btn {
    justify-self: end;
  }
}

/* ---------- 桌面 ---------- */
@media (min-width: 900px) {
  .page-faq .faq-hero {
    padding: 34px 0 0;
  }
  .page-faq .faq-hero__grid {
    grid-template-columns: 5fr 7fr;
    gap: 40px;
    align-items: center;
  }
}

@media (min-width: 960px) {
  .page-faq .faq-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 64px;
    padding: 52px 0 88px;
  }
  .page-faq .faq-index {
    position: sticky;
    top: 28px;
  }
  .page-faq .faq-index__list {
    display: block;
    padding-bottom: 0;
    overflow: visible;
    border-top: 1px solid var(--faq-rule);
  }
  .page-faq .faq-index__item {
    border-bottom: 1px solid var(--faq-rule);
  }
  .page-faq .faq-index__link {
    padding: 12px 0;
    border: 0;
    background: transparent;
    white-space: normal;
  }
  .page-faq .faq-index__link:hover {
    background: transparent;
  }
}

@media (min-width: 1020px) {
  .page-faq .faq-rules {
    grid-template-columns: 5fr 7fr;
    gap: 32px;
    align-items: start;
  }
}

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