.page-disclaimer {
  --def-cyan-soft: rgba(52, 229, 192, 0.14);
  --def-row-gap: 48px;
  color: var(--text);
}

/* ---------- 首屏框景 ---------- */
.page-disclaimer .def-hero {
  padding-top: 28px;
}

.page-disclaimer .def-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  margin-top: 22px;
}

.page-disclaimer .def-hero__title {
  margin: 14px 0 0;
  font-family: var(--serif);
  font-size: clamp(30px, 6.4vw, 48px);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: 0.01em;
}

.page-disclaimer .def-hero__lede {
  margin-top: 16px;
  max-width: 54ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--muted);
}

.page-disclaimer .def-hero__meta {
  list-style: none;
  margin: 22px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 22px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--tick);
}

.page-disclaimer .def-hero__meta li {
  position: relative;
  padding-left: 14px;
}

.page-disclaimer .def-hero__meta li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 6px;
  height: 1px;
  background: var(--cyan);
}

.page-disclaimer .def-hero__figure {
  margin: 0;
  border: 1px solid var(--line);
}

.page-disclaimer .def-hero__figure .frame__media {
  aspect-ratio: 1 / 1;
  overflow: hidden;
  background: var(--ink-deep);
}

.page-disclaimer .def-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  filter: saturate(0.72) contrast(1.05);
}

.page-disclaimer .def-hero__figure .frame__caption {
  display: block;
  padding: 8px 12px;
  border-top: 1px solid var(--line);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--tick);
}

/* ---------- 小节索引 ---------- */
.page-disclaimer .def-index {
  margin-top: 38px;
  padding: 13px 0;
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  display: flex;
  gap: 26px;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .def-index a {
  flex: 0 0 auto;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid transparent;
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-disclaimer .def-index a:hover,
.page-disclaimer .def-index a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 错落编号块 ---------- */
.page-disclaimer .def-blocks {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: 28px;
  row-gap: var(--def-row-gap);
}

.page-disclaimer .def-block {
  grid-column: 1 / -1;
  padding-top: 22px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 108px;
}

.page-disclaimer .def-block__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
}

.page-disclaimer .def-block__num {
  font-family: var(--narrow);
  font-size: 34px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-disclaimer .def-block__title {
  margin: 0;
  font-family: var(--serif);
  font-size: 23px;
  font-weight: 600;
  line-height: 1.3;
}

.page-disclaimer .def-block__lead {
  margin: 14px 0 0;
  max-width: 50ch;
  font-size: 15px;
  line-height: 1.85;
  color: var(--muted);
}

.page-disclaimer .def-block__note {
  margin: 20px 0 0;
  padding-left: 14px;
  border-left: 2px solid var(--orange);
  font-size: 13px;
  line-height: 1.75;
  color: var(--tick);
}

/* ---------- 条目 ---------- */
.page-disclaimer .def-items {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 22px;
  margin-top: 26px;
}

.page-disclaimer .def-item {
  padding: 2px 0 2px 16px;
  border-left: 2px solid var(--line);
  outline: none;
  transition: border-color 0.26s var(--ease);
}

.page-disclaimer .def-item:hover,
.page-disclaimer .def-item:focus-visible {
  border-left-color: var(--cyan);
}

.page-disclaimer .def-item__title {
  margin: 0 0 6px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.page-disclaimer .def-item__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

.page-disclaimer .def-item__scene {
  display: block;
  margin-top: 9px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-disclaimer .def-item__more {
  display: block;
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  margin-top: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--tick);
  transition: max-height 0.34s var(--ease), opacity 0.34s var(--ease), margin-top 0.34s var(--ease);
}

.page-disclaimer .def-item:hover .def-item__more,
.page-disclaimer .def-item:focus-visible .def-item__more {
  max-height: 160px;
  opacity: 1;
  margin-top: 8px;
  color: var(--muted);
}

/* ---------- 更新刻度 ---------- */
.page-disclaimer .def-scale {
  margin: 26px 0 12px;
  overflow-x: auto;
}

.page-disclaimer .def-scale__row {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  min-width: 400px;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .def-scale__cell {
  position: relative;
  padding: 46px 8px 12px;
  border-left: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  color: var(--tick);
}

.page-disclaimer .def-scale__cell:last-child {
  border-right: 1px solid var(--line);
}

.page-disclaimer .def-scale__cell--snap {
  color: var(--cyan);
}

.page-disclaimer .def-scale__cell--snap::before {
  content: "";
  position: absolute;
  left: -5px;
  top: 38px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--cyan);
  box-shadow: 0 0 0 4px var(--def-cyan-soft);
}

.page-disclaimer .def-scale__cell--snap::after {
  content: "快照节点";
  position: absolute;
  left: 8px;
  top: 6px;
  font-size: 10px;
  letter-spacing: 0.04em;
  color: var(--cyan);
}

.page-disclaimer .def-scale__note {
  margin: 0;
  font-family: var(--mono);
  font-size: 11px;
  line-height: 1.7;
  letter-spacing: 0.04em;
  color: var(--tick);
}

/* ---------- 键值列表 ---------- */
.page-disclaimer .def-kv {
  display: grid;
  gap: 14px;
  margin-top: 24px;
}

.page-disclaimer .def-kv__row {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 4px;
  padding-bottom: 12px;
  border-bottom: 1px dashed var(--line);
}

.page-disclaimer .def-kv__k {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--cyan);
}

.page-disclaimer .def-kv__v {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 引用规范 ---------- */
.page-disclaimer .def-rules {
  list-style: none;
  counter-reset: def-rule;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  gap: 20px;
}

.page-disclaimer .def-rules__item {
  position: relative;
  padding-left: 54px;
}

.page-disclaimer .def-rules__item::before {
  counter-increment: def-rule;
  content: counter(def-rule, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 0;
  font-family: var(--narrow);
  font-size: 26px;
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--orange);
}

.page-disclaimer .def-rules__title {
  margin: 0 0 5px;
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
}

.page-disclaimer .def-rules__desc {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--muted);
}

/* ---------- 反馈块 ---------- */
.page-disclaimer .def-feedback {
  margin-top: 26px;
  padding: 22px 20px;
  border: 1px solid var(--line);
  background: var(--panel);
}

.page-disclaimer .def-feedback__label {
  display: block;
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--tick);
}

.page-disclaimer .def-feedback__mail {
  display: block;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: clamp(15px, 4vw, 20px);
  letter-spacing: 0.02em;
  color: var(--cyan);
  word-break: break-all;
}

.page-disclaimer .def-feedback__note {
  margin: 12px 0 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--muted);
}

.page-disclaimer .def-feedback__links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 22px;
  margin-top: 16px;
}

.page-disclaimer .def-feedback__links a {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--text);
  text-decoration: none;
  padding-bottom: 2px;
  border-bottom: 1px solid var(--line);
  transition: color 0.24s var(--ease), border-color 0.24s var(--ease);
}

.page-disclaimer .def-feedback__links a:hover,
.page-disclaimer .def-feedback__links a:focus-visible {
  color: var(--cyan);
  border-bottom-color: var(--cyan);
}

/* ---------- 回到页首 ---------- */
.page-disclaimer .def-top {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 36px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.24s var(--ease);
}

.page-disclaimer .def-top::before {
  content: "↑";
  color: var(--orange);
}

.page-disclaimer .def-top:hover,
.page-disclaimer .def-top:focus-visible {
  color: var(--cyan);
}

/* ---------- 触屏与无障碍 ---------- */
@media (hover: none) {
  .page-disclaimer .def-item__more {
    max-height: none;
    opacity: 1;
    margin-top: 8px;
    color: var(--muted);
  }
}

/* ---------- 桌面与平板 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .def-blocks {
    column-gap: 32px;
  }

  .page-disclaimer .def-items {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    column-gap: 36px;
    row-gap: 24px;
  }

  .page-disclaimer .def-kv__row {
    grid-template-columns: 148px minmax(0, 1fr);
    gap: 20px;
    align-items: baseline;
  }

  .page-disclaimer .def-feedback {
    padding: 26px 24px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer {
    --def-row-gap: 72px;
  }

  .page-disclaimer .def-hero {
    padding-top: 40px;
  }

  .page-disclaimer .def-hero__grid {
    grid-template-columns: minmax(0, 1fr) 284px;
    gap: 48px;
    align-items: start;
  }

  .page-disclaimer .def-index {
    margin-top: 48px;
  }

  .page-disclaimer .def-block--a {
    grid-column: 1 / span 7;
  }

  .page-disclaimer .def-block--b {
    grid-column: 6 / span 7;
  }

  .page-disclaimer .def-block--c {
    grid-column: 1 / span 6;
  }

  .page-disclaimer .def-block--d {
    grid-column: 7 / span 6;
  }

  .page-disclaimer .def-block--e {
    grid-column: 1 / span 5;
  }

  .page-disclaimer .def-block__num {
    font-size: 38px;
  }

  .page-disclaimer .def-block__title {
    font-size: 25px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .def-item__more,
  .page-disclaimer .def-item,
  .page-disclaimer .def-index a,
  .page-disclaimer .def-feedback__links a,
  .page-disclaimer .def-top {
    transition: none;
  }
}