.page-faq {
  --faq-line: rgba(232, 241, 236, 0.14);
  --faq-line-soft: rgba(232, 241, 236, 0.07);
  --faq-accent: var(--cyan);
  --faq-accent-soft: rgba(53, 232, 192, 0.13);
  display: block;
}

/* ---------- 首屏 ---------- */
.page-faq .faq-mast {
  position: relative;
  padding: 22px 0 46px;
  border-bottom: 1px solid var(--faq-line);
  overflow: hidden;
}

.page-faq .faq-mast::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 62%;
  background: linear-gradient(180deg, rgba(53, 232, 192, 0.07), rgba(12, 31, 26, 0));
  pointer-events: none;
}

.page-faq .breadcrumb {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
  margin-bottom: 30px;
}

.page-faq .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  padding-bottom: 1px;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .breadcrumb a:hover {
  color: var(--faq-accent);
  border-bottom-color: var(--faq-accent);
}

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

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

.page-faq .faq-mast__title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(36px, 6.4vw, 76px);
  line-height: 1.04;
  letter-spacing: 0.01em;
  color: var(--cream);
  margin: 14px 0 18px;
}

.page-faq .faq-mast__intro {
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.7;
  color: var(--data-white);
  margin: 0;
}

.page-faq .faq-mast__meta {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 30px;
  margin: 26px 0 0;
  padding-top: 16px;
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-mast__meta li {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.page-faq .faq-mast__meta-k {
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--mist);
}

.page-faq .faq-mast__meta-v {
  font-family: var(--font-data);
  font-size: 14px;
  font-variant-numeric: tabular-nums;
  color: var(--faq-accent);
}

.page-faq .faq-mast__shot {
  margin: 0;
}

.page-faq .faq-mast__shot img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.page-faq .media__caption {
  display: block;
  margin-top: 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
}

/* ---------- 主体两栏 ---------- */
.page-faq .faq-body {
  padding: 40px 0 64px;
}

.page-faq .faq-body__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 30px;
}

.page-faq .faq-index__label {
  margin-bottom: 14px;
}

.page-faq .faq-index__group {
  margin-bottom: 20px;
}

.page-faq .faq-index__key {
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faq-accent);
  margin: 0 0 8px;
}

.page-faq .faq-index__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1px;
}

.page-faq .faq-index__link {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 8px;
  align-items: baseline;
  padding: 6px 8px 6px 0;
  border-left: 2px solid transparent;
  text-decoration: none;
  color: var(--data-white);
  font-size: 14px;
  line-height: 1.45;
  transition: border-color 0.22s var(--ease), color 0.22s var(--ease), background 0.22s var(--ease);
}

.page-faq .faq-index__link:hover {
  border-left-color: var(--faq-accent);
  background: var(--glass);
  color: var(--cream);
}

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

.page-faq .faq-index__num {
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  color: var(--mist);
}

/* ---------- 章节头（6 度斜切） ---------- */
.page-faq .faq-sec {
  margin-bottom: 52px;
  scroll-margin-top: 130px;
}

.page-faq .faq-sec:last-child {
  margin-bottom: 0;
}

.page-faq .faq-sec__head {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  column-gap: 12px;
  row-gap: 4px;
  padding: 13px 40px 13px 14px;
  margin-bottom: 6px;
  border-left: 2px solid var(--faq-accent);
  background: linear-gradient(90deg, var(--faq-accent-soft), rgba(53, 232, 192, 0) 82%);
  clip-path: polygon(0 0, 100% 0, calc(100% - 24px) 100%, 0 100%);
}

.page-faq .faq-sec__num {
  grid-row: 1 / span 2;
  align-self: center;
  font-family: var(--font-data);
  font-size: 13px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--faq-accent);
}

.page-faq .faq-sec__title {
  grid-column: 2;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(21px, 3vw, 29px);
  line-height: 1.2;
  letter-spacing: 0.02em;
  color: var(--cream);
}

.page-faq .faq-sec__note {
  grid-column: 2;
  margin: 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 折叠问答 ---------- */
.page-faq .faq-list {
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-item {
  border-left: 2px solid transparent;
  border-bottom: 1px solid var(--faq-line-soft);
  scroll-margin-top: 130px;
  transition: border-color 0.25s var(--ease), background 0.25s var(--ease);
}

.page-faq .faq-item[open],
.page-faq .faq-item:target {
  border-left-color: var(--faq-accent);
  background: linear-gradient(90deg, rgba(53, 232, 192, 0.055), rgba(53, 232, 192, 0) 62%);
}

.page-faq .faq-item__q {
  display: grid;
  grid-template-columns: 30px minmax(0, 1fr) 18px;
  align-items: baseline;
  gap: 14px;
  padding: 17px 16px 17px 14px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 500;
  color: var(--cream);
}

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

.page-faq .faq-item__q::after {
  content: "+";
  justify-self: end;
  font-family: var(--font-data);
  font-size: 17px;
  line-height: 1;
  color: var(--mist);
  transition: color 0.2s var(--ease);
}

.page-faq .faq-item[open] .faq-item__q::after {
  content: "–";
  color: var(--faq-accent);
}

.page-faq .faq-item__q:hover .faq-item__text {
  color: var(--data-white);
}

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

.page-faq .faq-item__idx {
  font-family: var(--font-data);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.06em;
  color: var(--mist);
}

.page-faq .faq-item[open] .faq-item__idx {
  color: var(--faq-accent);
}

.page-faq .faq-item__a {
  padding: 0 22px 22px 58px;
}

.page-faq .faq-item__verdict {
  margin: 0;
  font-size: 15.5px;
  font-weight: 600;
  line-height: 1.7;
  color: var(--cream);
}

.page-faq .faq-item__basis {
  margin: 10px 0 0;
  padding-left: 12px;
  border-left: 1px solid var(--faq-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-faq .faq-contact {
  margin: 14px 0 0;
  padding: 12px 14px;
  background: var(--glass);
  border-top: 1px solid var(--faq-line-soft);
  font-size: 13px;
  line-height: 1.75;
  color: var(--data-white);
}

.page-faq .faq-contact__val {
  font-family: var(--font-data);
  font-size: 13px;
  color: var(--faq-accent);
  word-break: break-all;
}

/* ---------- 更新节奏刻度 ---------- */
.page-faq .faq-cadence {
  list-style: none;
  margin: 18px 0 22px;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.page-faq .faq-cadence__item {
  padding: 14px 0 14px 16px;
  border-left: 1px solid var(--faq-line);
  border-top: 1px solid var(--faq-line-soft);
}

.page-faq .faq-cadence__when {
  display: block;
  font-family: var(--font-data);
  font-size: 17px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.01em;
  color: var(--faq-accent);
  margin-bottom: 6px;
}

.page-faq .faq-cadence__what {
  margin: 0;
  font-size: 14px;
  line-height: 1.65;
  color: var(--data-white);
}

/* ---------- 图文并置 ---------- */
.page-faq .faq-split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.page-faq .faq-split__shot {
  margin: 0;
}

.page-faq .faq-split__shot img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* ---------- 引用格式块 ---------- */
.page-faq .faq-cite {
  margin-top: 16px;
  padding: 15px 16px;
  background: var(--glass);
  border: 1px dashed var(--faq-line);
}

.page-faq .faq-cite__label {
  margin: 0 0 10px;
  font-family: var(--font-index);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--faq-accent);
}

.page-faq .faq-cite__body {
  margin: 0;
  font-family: var(--font-data);
  font-size: 14px;
  line-height: 1.7;
  color: var(--cream);
  word-break: break-word;
}

.page-faq .faq-cite__hint {
  margin: 10px 0 0;
  font-size: 13px;
  line-height: 1.65;
  color: var(--mist);
}

/* ---------- 章节收尾 ---------- */
.page-faq .faq-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 26px;
}

.page-faq .faq-tail {
  margin: 22px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
  max-width: 62ch;
}

.page-faq .faq-tail a {
  color: var(--data-white);
  text-decoration: none;
  border-bottom: 1px solid var(--faq-line);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}

.page-faq .faq-tail a:hover {
  color: var(--faq-accent);
  border-bottom-color: var(--faq-accent);
}

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

/* ---------- 平板 ---------- */
@media (min-width: 700px) {
  .page-faq .faq-mast {
    padding: 28px 0 56px;
  }

  .page-faq .faq-mast__grid {
    grid-template-columns: minmax(0, 1fr) minmax(0, 340px);
    gap: 40px;
  }

  .page-faq .faq-cadence {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-faq .faq-cadence__item {
    padding-right: 22px;
    border-top: none;
    border-bottom: 1px solid var(--faq-line-soft);
  }

  .page-faq .faq-split {
    grid-template-columns: minmax(0, 280px) minmax(0, 1fr);
    gap: 34px;
  }
}

/* ---------- 桌面：左侧固定索引 ---------- */
@media (min-width: 1000px) {
  .page-faq .faq-body {
    padding: 56px 0 84px;
  }

  .page-faq .faq-body__grid {
    grid-template-columns: 236px minmax(0, 1fr);
    gap: 64px;
  }

  .page-faq .faq-index {
    position: sticky;
    top: 112px;
    align-self: start;
  }

  .page-faq .faq-index__label {
    padding-bottom: 10px;
    border-bottom: 1px solid var(--faq-line);
  }

  .page-faq .faq-cadence {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

/* ---------- 窄屏：索引改横向滑动条 ---------- */
@media (max-width: 860px) {
  .page-faq .faq-index {
    margin: 0 calc(var(--gutter) * -1);
    padding: 0 var(--gutter);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-faq .faq-index__group {
    margin-bottom: 12px;
  }

  .page-faq .faq-index__list {
    display: flex;
    gap: 8px;
    width: max-content;
    padding-bottom: 4px;
  }

  .page-faq .faq-index__link {
    grid-template-columns: auto auto;
    gap: 6px;
    white-space: nowrap;
    padding: 7px 10px;
    border-left: none;
    border-bottom: 2px solid transparent;
    background: var(--glass);
  }

  .page-faq .faq-index__link:hover {
    border-bottom-color: var(--faq-accent);
  }

  .page-faq .faq-item__a {
    padding: 0 16px 20px 44px;
  }

  .page-faq .faq-item__q {
    grid-template-columns: 26px minmax(0, 1fr) 16px;
    gap: 10px;
    padding: 15px 12px 15px 12px;
  }

  .page-faq .faq-sec__head {
    grid-template-columns: 34px minmax(0, 1fr);
    column-gap: 10px;
    padding: 12px 26px 12px 12px;
    clip-path: polygon(0 0, 100% 0, calc(100% - 14px) 100%, 0 100%);
  }

  .page-faq .faq-cadence__item {
    padding-left: 12px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-faq .faq-index__link,
  .page-faq .faq-item,
  .page-faq .faq-item__q::after,
  .page-faq .breadcrumb a,
  .page-faq .faq-tail a {
    transition: none;
  }
}