.page-disclaimer {
  --dl-rail: 12.5rem;
  --dl-accent-soft: rgba(19, 88, 255, .07);
  --dl-deep-soft: rgba(11, 34, 51, .045);
  background: var(--paper);
  color: var(--ink);
}

/* ---------- 顶部与首屏 ---------- */

.page-disclaimer .doc-top {
  padding-top: clamp(1rem, 3vw, 1.75rem);
}

.page-disclaimer .doc-hero {
  display: grid;
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.5rem, 4.5vw, 3rem) clamp(1.5rem, 4vw, 2.75rem);
  border-bottom: var(--hairline);
}

.page-disclaimer .kicker {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--brick);
  margin: 0 0 .9rem;
}

.page-disclaimer h1 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.05rem, 6.6vw, 3.9rem);
  line-height: 1.04;
  letter-spacing: -.005em;
  margin: 0 0 1rem;
}

.page-disclaimer .hero-lede {
  font-size: clamp(1rem, 2.1vw, 1.12rem);
  line-height: 1.85;
  max-width: 33em;
  color: var(--brick);
  margin: 0 0 1.4rem;
}

.page-disclaimer .hero-tags {
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-disclaimer .doc-fig {
  margin: 0;
  display: grid;
  gap: .6rem;
}

.page-disclaimer .doc-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  object-fit: cover;
  border: var(--hairline);
  filter: grayscale(.2) contrast(1.04);
}

.page-disclaimer .doc-fig .media-cap {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .07em;
  color: var(--brick);
}

@media (min-width: 880px) {
  .page-disclaimer .doc-hero {
    grid-template-columns: minmax(0, 1fr) minmax(10.5rem, 15rem);
    align-items: start;
  }
  .page-disclaimer .doc-fig {
    align-self: end;
  }
}

/* ---------- 主体网格：正文推进 + 右侧修订标记栏 ---------- */

.page-disclaimer .doc-body {
  display: grid;
  grid-template-areas:
    "rail"
    "flow";
  gap: clamp(1.5rem, 4vw, 2.5rem);
  padding-block: clamp(1.5rem, 4vw, 2.25rem) clamp(2rem, 5vw, 3.25rem);
}

.page-disclaimer .doc-flow {
  grid-area: flow;
  min-width: 0;
}

.page-disclaimer .doc-rail {
  grid-area: rail;
  border-top: var(--hairline);
  padding-top: .85rem;
}

@media (min-width: 1024px) {
  .page-disclaimer .doc-body {
    grid-template-areas: "flow rail";
    grid-template-columns: minmax(0, 1fr) var(--dl-rail);
    gap: clamp(2rem, 5vw, 4.5rem);
  }
  .page-disclaimer .doc-rail {
    position: sticky;
    top: 6.5rem;
    align-self: start;
    border-top: 0;
    padding-top: 0;
  }
}

/* ---------- 修订标记栏 ---------- */

.page-disclaimer .doc-rail .toc-title {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--brick);
  margin: 0 0 .6rem;
}

.page-disclaimer .doc-rail .toc-list {
  list-style: none;
  margin: 0;
  padding: 0 0 .45rem;
  display: flex;
  gap: .5rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .doc-rail .toc-list > li {
  flex: 0 0 auto;
  margin: 0;
}

.page-disclaimer .doc-rail .toc-link {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  white-space: nowrap;
  font-size: .78rem;
  line-height: 1.4;
  color: var(--brick);
  text-decoration: none;
  border: 1px solid var(--hair);
  padding: .4rem .7rem;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
    background-color var(--dur) var(--ease);
}

.page-disclaimer .doc-rail .toc-link:hover,
.page-disclaimer .doc-rail .toc-link:focus-visible {
  color: var(--blue);
  border-color: var(--blue);
}

.page-disclaimer .doc-rail .toc-link.is-active,
.page-disclaimer .doc-rail .toc-link[aria-current="true"] {
  color: var(--blue);
  border-color: var(--blue);
  background: var(--dl-accent-soft);
}

.page-disclaimer .doc-rail .toc-num {
  font-family: var(--font-mono);
  font-size: .7rem;
  letter-spacing: .1em;
  color: currentColor;
  opacity: .7;
}

.page-disclaimer .rail-note {
  font-family: var(--font-mono);
  font-size: .64rem;
  line-height: 1.9;
  letter-spacing: .1em;
  color: var(--bronze);
  margin: .8rem 0 0;
}

@media (min-width: 1024px) {
  .page-disclaimer .doc-rail .toc-list {
    display: block;
    overflow: visible;
    padding: 0;
    border-left: 1px solid var(--hair);
  }
  .page-disclaimer .doc-rail .toc-link {
    display: grid;
    grid-template-columns: 1.9rem minmax(0, 1fr);
    align-items: baseline;
    white-space: normal;
    border: 0;
    border-left: 2px solid transparent;
    margin-left: -1px;
    padding: .5rem .4rem .5rem .7rem;
    background: none;
    font-size: .82rem;
  }
  .page-disclaimer .doc-rail .toc-link.is-active,
  .page-disclaimer .doc-rail .toc-link[aria-current="true"] {
    border-left-color: var(--blue);
    background: var(--dl-accent-soft);
  }
  .page-disclaimer .rail-note {
    padding-left: .7rem;
  }
}

/* ---------- 章节 ---------- */

.page-disclaimer .doc-sec {
  max-width: 44em;
  padding-block: clamp(1.75rem, 5vw, 3rem);
  border-top: var(--hairline);
}

.page-disclaimer .doc-sec:first-child {
  border-top: 0;
  padding-top: 0;
}

.page-disclaimer .sec-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .55rem 1rem;
  margin-bottom: .95rem;
}

.page-disclaimer .sec-num {
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .14em;
  line-height: 1.5;
  color: var(--blue);
  border: 1px solid currentColor;
  padding: .15rem .4rem;
}

.page-disclaimer .sec-head h2 {
  flex: 1 1 auto;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.3rem, 3.4vw, 1.85rem);
  line-height: 1.2;
  letter-spacing: .01em;
  margin: 0;
}

.page-disclaimer .stamp {
  font-family: var(--font-mono);
  font-size: .64rem;
  letter-spacing: .12em;
  white-space: nowrap;
  color: var(--bronze);
  border: 1px solid currentColor;
  padding: .18rem .45rem;
  transform: rotate(-1.5deg);
}

.page-disclaimer .doc-sec p {
  font-size: 1rem;
  line-height: 1.85;
  max-width: 38em;
  margin: 0 0 1rem;
}

.page-disclaimer .doc-sec p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .doc-sec ul {
  list-style: none;
  margin: 0 0 1rem;
  padding: 0;
  max-width: 38em;
}

.page-disclaimer .doc-sec ul > li {
  position: relative;
  padding-left: 1.2rem;
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: .5rem;
}

.page-disclaimer .doc-sec ul > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: .8em;
  width: .7rem;
  height: 1px;
  background: var(--blue);
}

.page-disclaimer .doc-sec strong {
  font-weight: 700;
  color: var(--deep);
}

.page-disclaimer .link-inline {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(19, 88, 255, .35);
}

.page-disclaimer .link-inline:hover,
.page-disclaimer .link-inline:focus-visible {
  border-bottom-color: var(--blue);
}

.page-disclaimer .mono {
  font-family: var(--font-mono);
  font-size: .92em;
  letter-spacing: .03em;
  word-break: break-all;
}

/* 来源清单 */

.page-disclaimer .src-list {
  margin: 0 0 1.25rem;
  max-width: 40em;
}

.page-disclaimer .src-item {
  padding: .9rem 0;
  border-top: 1px solid var(--hair);
}

.page-disclaimer .src-item:last-child {
  border-bottom: 1px solid var(--hair);
}

.page-disclaimer .src-item dt {
  font-family: var(--font-mono);
  font-size: .76rem;
  letter-spacing: .1em;
  color: var(--bronze);
  margin-bottom: .35rem;
}

.page-disclaimer .src-item dd {
  margin: 0;
  font-size: .96rem;
  line-height: 1.8;
}

/* 标记读法示例 */

.page-disclaimer .mark-read {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .4rem .9rem;
  max-width: 38em;
  margin: 0 0 1.25rem;
  padding: .9rem 1rem;
  border-left: 3px solid var(--deep);
  background: var(--dl-deep-soft);
}

.page-disclaimer .mark-value {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 2.6vw, 1.2rem);
  letter-spacing: .06em;
  color: var(--deep);
}

.page-disclaimer .mark-note {
  font-family: var(--font-mono);
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--brick);
}

/* 引用文本块 */

.page-disclaimer .cite-block {
  max-width: 40em;
  margin: 1.25rem 0 0;
  padding: 1rem 1.1rem;
  border: 1px solid var(--hair);
  border-left: 3px solid var(--blue);
  background: var(--dl-accent-soft);
}

.page-disclaimer .cite-label {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--blue);
  margin: 0 0 .5rem;
}

.page-disclaimer .cite-text {
  font-family: var(--font-mono);
  font-size: .86rem;
  line-height: 1.8;
  letter-spacing: .02em;
  color: var(--ink);
  margin: 0;
  word-break: break-word;
}

/* ---------- 页尾跑道线 ---------- */

.page-disclaimer .runway-wrap {
  border-top: var(--hairline);
  padding-top: 1.25rem;
}

.page-disclaimer .runway {
  display: block;
  width: 100%;
  height: 34px;
  color: var(--hair);
}

.page-disclaimer .runway .tick,
.page-disclaimer .runway .base,
.page-disclaimer .runway .accent {
  fill: none;
}

.page-disclaimer .runway .tick {
  stroke: currentColor;
  stroke-width: 1;
}

.page-disclaimer .runway .base {
  stroke: var(--hair);
  stroke-width: 1;
}

.page-disclaimer .runway .accent {
  stroke: var(--blue);
  stroke-width: 2;
}

.page-disclaimer .runway-cap {
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .16em;
  color: var(--brick);
  margin: .5rem 0 0;
  text-align: right;
}

/* ---------- 窄屏细化 ---------- */

@media (max-width: 560px) {
  .page-disclaimer .doc-sec {
    max-width: 100%;
  }
  .page-disclaimer .sec-head {
    gap: .4rem .6rem;
  }
  .page-disclaimer .sec-head h2 {
    flex: 1 1 100%;
    order: 3;
  }
  .page-disclaimer .stamp {
    order: 2;
    margin-left: auto;
  }
  .page-disclaimer .mark-read,
  .page-disclaimer .cite-block {
    padding: .8rem .85rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .doc-rail .toc-link {
    transition: none;
  }
  .page-disclaimer .stamp {
    transform: none;
  }
}