.page-faq {
  --faq-index-w: 264px;
  --faq-index-gap: 56px;
  --faq-sticky: calc(var(--topbar-h) + 24px);
  background: var(--cream);
  color: var(--ink);
}

.page-faq .faq-topline {
  padding: 20px 0 0;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-hero {
  padding: 18px 0 0;
}

.page-faq .faq-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  align-items: end;
}

.page-faq .faq-hero__title {
  margin: 14px 0 18px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(34px, 6.6vw, 68px);
  line-height: 1.0;
  letter-spacing: -.02em;
  color: var(--ink);
}

.page-faq .faq-hero__lead .lede {
  max-width: 62ch;
  margin: 0;
  color: var(--ink-soft);
}

.page-faq .faq-hero__media {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border-left: 3px solid var(--ag-red);
}

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

.page-faq .faq-hero__facts {
  list-style: none;
  margin: 36px 0 0;
  padding: 22px 0 26px;
  border-top: 1px solid var(--hair);
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
}

.page-faq .faq-hero__facts > li {
  display: flex;
  flex-direction: column;
  gap: 5px;
  min-width: 0;
}

.page-faq .faq-hero__num {
  font-family: var(--font-mono);
  font-size: clamp(17px, 2.2vw, 21px);
  font-weight: 600;
  letter-spacing: .05em;
  color: var(--ag-red);
}

.page-faq .faq-hero__facts > li:nth-child(2) .faq-hero__num {
  color: var(--cobalt);
}

.page-faq .faq-hero__facts > li:nth-child(3) .faq-hero__num {
  color: var(--gold);
}

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

@media (min-width: 860px) {
  .page-faq .faq-hero__grid {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
  }

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

  .page-faq .faq-hero__facts > li + li {
    border-left: 1px solid var(--hair);
    padding-left: 28px;
  }
}

/* ---------- 主体双栏 ---------- */
.page-faq .faq-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 40px;
  padding-top: 56px;
  padding-bottom: 96px;
  align-items: start;
}

@media (min-width: 980px) {
  .page-faq .faq-shell {
    grid-template-columns: var(--faq-index-w) minmax(0, 1fr);
    gap: var(--faq-index-gap);
  }
}

/* ---------- 左侧目录 ---------- */
.page-faq .faq-index {
  border-top: 2px solid var(--ink);
  padding-top: 18px;
}

.page-faq .faq-index__title {
  margin: 0 0 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-index__list,
.page-faq .faq-index__sub {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-faq .faq-index__list > li + li {
  margin-top: 20px;
}

.page-faq .faq-index__group {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 3px 0;
  font-size: 15px;
  font-weight: 500;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: color var(--ease), border-color var(--ease);
}

.page-faq .faq-index__group:hover {
  color: var(--ag-red);
  border-bottom-color: var(--ag-red);
}

.page-faq .faq-index__num {
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--ag-red);
}

.page-faq .faq-index__list > li:nth-child(2) .faq-index__group:hover,
.page-faq .faq-index__list > li:nth-child(2) .faq-index__group:hover .faq-index__num {
  color: var(--cobalt);
}

.page-faq .faq-index__list > li:nth-child(2) .faq-index__group:hover {
  border-bottom-color: var(--cobalt);
}

.page-faq .faq-index__list > li:nth-child(2) .faq-index__num {
  color: var(--cobalt);
}

.page-faq .faq-index__list > li:nth-child(3) .faq-index__num {
  color: var(--crimson);
}

.page-faq .faq-index__list > li:nth-child(4) .faq-index__num {
  color: var(--gold);
}

.page-faq .faq-index__sub {
  margin: 10px 0 0 22px;
  padding-left: 12px;
  border-left: 1px solid var(--hair);
}

.page-faq .faq-index__sub a {
  display: block;
  padding: 4px 0;
  font-size: 13px;
  line-height: 1.55;
  color: var(--gray);
  text-decoration: none;
  transition: color var(--ease);
}

.page-faq .faq-index__sub a:hover {
  color: var(--ink);
}

@media (min-width: 980px) {
  .page-faq .faq-index {
    position: sticky;
    top: var(--faq-sticky);
    max-height: calc(100vh - var(--faq-sticky) - 32px);
    overflow-y: auto;
    overscroll-behavior: contain;
  }
}

/* ---------- 右侧答案 ---------- */
.page-faq .faq-body {
  min-width: 0;
}

.page-faq .faq-group + .faq-group {
  position: relative;
  margin-top: 64px;
  padding-top: 60px;
  border-top: 1px solid var(--hair);
}

.page-faq .faq-group + .faq-group::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 64px;
  height: 2px;
  background: var(--cyan-deep);
}

.page-faq .faq-group,
.page-faq .faq-item {
  scroll-margin-top: 88px;
}

.page-faq .faq-group__head {
  margin-bottom: 22px;
}

.page-faq .faq-group__num {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--gray);
}

.page-faq .faq-group__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 400;
  font-size: clamp(26px, 3.6vw, 40px);
  line-height: 1.08;
  letter-spacing: -.01em;
  color: var(--ink);
}

.page-faq .faq-group__note {
  max-width: 64ch;
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--gray);
}

/* 折叠问答 */
.page-faq .faq-item {
  border-top: 1px solid var(--hair);
  transition: background var(--ease);
}

.page-faq .faq-item:last-of-type {
  border-bottom: 1px solid var(--hair);
}

.page-faq .faq-item > summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: flex-start;
  gap: 18px;
  padding: 20px 4px;
  font-size: 17px;
  font-weight: 500;
  line-height: 1.55;
  color: var(--ink);
  transition: background var(--ease), color var(--ease);
}

.page-faq .faq-item > summary::-webkit-details-marker {
  display: none;
}

.page-faq .faq-item > summary:hover {
  background: var(--panel);
  color: var(--crimson);
}

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

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

.page-faq .faq-item__arrow {
  position: relative;
  flex: 0 0 auto;
  width: 14px;
  height: 14px;
  margin-top: 7px;
}

.page-faq .faq-item__arrow::before,
.page-faq .faq-item__arrow::after {
  content: "";
  position: absolute;
  background: var(--gray);
  transition: transform var(--ease), background var(--ease);
}

.page-faq .faq-item__arrow::before {
  left: 0;
  right: 0;
  top: 6px;
  height: 1px;
}

.page-faq .faq-item__arrow::after {
  top: 0;
  bottom: 0;
  left: 6px;
  width: 1px;
}

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

.page-faq .faq-item[open] .faq-item__arrow::before,
.page-faq .faq-item[open] .faq-item__arrow::after {
  background: var(--ag-red);
}

.page-faq .faq-item[open] > summary {
  color: var(--ink);
}

.page-faq .faq-item__body {
  padding: 0 4px 24px;
  max-width: 64ch;
}

.page-faq .faq-item__body p {
  margin: 0;
  font-size: 16px;
  line-height: 1.85;
  color: var(--ink-soft);
}

.page-faq .faq-item__body p + p {
  margin-top: 12px;
}

.page-faq .faq-item__body a {
  color: var(--cobalt);
  text-decoration: underline;
  text-decoration-color: rgba(29, 78, 216, .35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--ease), color var(--ease);
}

.page-faq .faq-item__body a:hover {
  color: var(--crimson);
  text-decoration-color: var(--crimson);
}

.page-faq .hl-red {
  box-shadow: inset 0 -0.62em 0 rgba(217, 58, 43, .18);
}

.page-faq .hl-blue {
  box-shadow: inset 0 -0.62em 0 rgba(29, 78, 216, .16);
}

/* 反馈流程图 */
.page-faq .faq-figure {
  margin: 0 0 26px;
}

.page-faq .faq-figure .media {
  position: relative;
  overflow: hidden;
  background: var(--panel);
  border-left: 3px solid var(--cobalt);
}

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

.page-faq .faq-figure figcaption {
  margin-top: 10px;
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
  padding-left: 12px;
  border-left: 1px solid var(--hair);
}

/* 反馈模板 */
.page-faq .faq-template {
  margin-top: 30px;
  padding: 20px 22px 18px;
  background: var(--panel);
  border: 1px solid var(--hair);
  border-left: 3px solid var(--gold);
}

.page-faq .faq-template__title {
  margin: 0 0 12px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
}

.page-faq .faq-template__body {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.95;
  color: var(--ink-soft);
  white-space: pre-wrap;
  word-break: break-word;
  overflow-x: auto;
}

.page-faq .faq-template__note {
  margin: 14px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--hair);
  font-size: 13px;
  line-height: 1.7;
  color: var(--gray);
}

@media (min-width: 640px) {
  .page-faq .faq-template {
    padding: 24px 28px 22px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-item,
  .page-faq .faq-item > summary,
  .page-faq .faq-item__arrow::before,
  .page-faq .faq-item__arrow::after,
  .page-faq .faq-index__group,
  .page-faq .faq-index__sub a {
    transition: none;
  }
}