.page-disclaimer{
  --doc-text: #c9d8ec;
  --doc-rail-x: 57px;
  --doc-num-w: 44px;
  --doc-col-gap: 42px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .doc-hero{
  padding-top: clamp(22px, 3.5vw, 38px);
  padding-bottom: clamp(28px, 4.5vw, 50px);
}
.page-disclaimer .doc-hero__inner{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(22px, 3.5vw, 40px);
  align-items: center;
}
.page-disclaimer .doc-hero__text{
  display: grid;
  gap: 15px;
  align-content: start;
}
.page-disclaimer .doc-hero__text .k8-h1{
  max-width: 14em;
}
.page-disclaimer .doc-hero__text .k8-lede{
  max-width: 34em;
}
.page-disclaimer .doc-hero__figure{
  margin: 0;
  position: relative;
  border-radius: var(--k8-r-lg);
  overflow: hidden;
  border: 1px solid var(--k8-line);
  background:
    linear-gradient(150deg, var(--k8-steel) 0%, var(--k8-deepgreen) 58%, var(--k8-black) 100%);
}
.page-disclaimer .doc-hero__figure img{
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 1000 / 600;
  object-fit: cover;
  max-width: 100%;
}
.page-disclaimer .doc-hero__figure figcaption{
  position: absolute;
  left: 14px;
  bottom: 12px;
  padding: 4px 11px;
  border-radius: 999px;
  background: rgba(6, 9, 16, .74);
  border: 1px solid var(--k8-line);
  font-family: var(--k8-mono);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--k8-green);
}

/* ---------- 页内目录 ---------- */
.page-disclaimer .doc-toc{
  border-top: 1px solid var(--k8-line);
  border-bottom: 1px solid var(--k8-line);
  padding: 12px 0;
}
.page-disclaimer .doc-toc__summary{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  list-style: none;
  padding: 2px 0;
  font-family: var(--k8-mono);
  font-size: 12.5px;
  letter-spacing: .09em;
  color: var(--k8-green);
}
.page-disclaimer .doc-toc__summary::-webkit-details-marker{
  display: none;
}
.page-disclaimer .doc-toc__summary:focus-visible{
  outline: 2px solid var(--k8-green);
  outline-offset: 4px;
  border-radius: var(--k8-r-sm);
}
.page-disclaimer .doc-toc__summary::before{
  content: "▍";
  margin-right: 8px;
  color: var(--k8-blue);
}
.page-disclaimer .doc-toc__summary::after{
  content: "＋";
  margin-left: auto;
  padding-left: 12px;
  color: var(--k8-mist);
}
.page-disclaimer .doc-toc[open] .doc-toc__summary::after{
  content: "－";
}
.page-disclaimer .doc-toc__list{
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 8px;
}
.page-disclaimer .doc-toc:not([open]) > .doc-toc__list{
  display: none;
}
.page-disclaimer .doc-toc[open] > .doc-toc__list{
  display: grid;
  margin-top: 14px;
  padding-top: 12px;
  border-top: 1px dashed var(--k8-line);
}
.page-disclaimer .doc-toc__link{
  display: inline-flex;
  align-items: baseline;
  gap: 9px;
  padding: 5px 9px;
  border-radius: var(--k8-r-sm);
  border: 1px solid transparent;
  color: var(--k8-mist);
  text-decoration: none;
  font-size: 14px;
  line-height: 1.55;
  transition: color .18s ease, border-color .18s ease, background-color .18s ease;
}
.page-disclaimer .doc-toc__link:hover,
.page-disclaimer .doc-toc__link:focus-visible{
  color: var(--k8-ice);
  border-color: var(--k8-line);
  background: rgba(22, 38, 58, .68);
  outline: none;
}
.page-disclaimer .doc-toc__idx{
  font-family: var(--k8-mono);
  font-size: 12px;
  color: var(--k8-blue);
}

/* ---------- 文档主线 ---------- */
.page-disclaimer .doc-body{
  position: relative;
  max-width: 880px;
  padding-top: clamp(28px, 4.5vw, 52px);
  padding-bottom: clamp(46px, 7vw, 86px);
}
.page-disclaimer .doc-sec{
  position: relative;
  padding: 26px 0 30px;
  scroll-margin-top: 120px;
}
.page-disclaimer .doc-sec + .doc-sec{
  border-top: 1px dashed var(--k8-line);
}
.page-disclaimer .doc-sec__num{
  display: block;
  margin-bottom: 8px;
  font-family: var(--k8-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--k8-blue);
}
.page-disclaimer .doc-sec__title{
  margin: 0 0 12px;
  font-size: clamp(20px, 2.4vw, 25px);
  font-weight: 900;
  line-height: 1.35;
  letter-spacing: -.01em;
  color: var(--k8-ice);
}
.page-disclaimer .doc-sec__content > p{
  margin: 0 0 14px;
  max-width: 60ch;
  font-size: 16px;
  line-height: var(--k8-lh);
  color: var(--doc-text);
}
.page-disclaimer .doc-sec__content > p:last-child{
  margin-bottom: 0;
}

/* ---------- 条目列表 ---------- */
.page-disclaimer .doc-list{
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}
.page-disclaimer .doc-list > li{
  position: relative;
  padding-left: 22px;
  max-width: 60ch;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--doc-text);
}
.page-disclaimer .doc-list > li::before{
  content: "";
  position: absolute;
  left: 3px;
  top: .78em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--k8-blue);
}
.page-disclaimer .doc-list > li:nth-child(2n)::before{
  background: var(--k8-green);
}

/* ---------- 重点词与旁注 ---------- */
.page-disclaimer .doc-mark{
  color: var(--k8-ice);
  background: rgba(47, 123, 255, .18);
  border-radius: 4px;
  padding: 0 5px;
  -webkit-box-decoration-break: clone;
  box-decoration-break: clone;
}
.page-disclaimer .doc-callout{
  margin-top: 16px;
  padding: 14px 18px;
  max-width: 60ch;
  border-left: 2px solid var(--k8-green);
  border-radius: 0 var(--k8-r-sm) var(--k8-r-sm) 0;
  background: linear-gradient(90deg, rgba(12, 42, 32, .92), rgba(12, 42, 32, .04));
  font-size: 15px;
  line-height: 1.8;
  color: var(--doc-text);
}

/* ---------- 页尾指引 ---------- */
.page-disclaimer .doc-foot{
  margin-top: 10px;
  padding-top: 26px;
  border-top: 1px dashed var(--k8-line);
  display: grid;
  gap: 14px;
}
.page-disclaimer .doc-foot__text{
  margin: 0;
  font-size: 15px;
  line-height: 1.75;
  color: var(--k8-mist);
}
.page-disclaimer .doc-foot__links{
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* ---------- 中屏及以上 ---------- */
@media (min-width: 760px){
  .page-disclaimer .doc-body::before{
    content: "";
    position: absolute;
    left: var(--doc-rail-x);
    top: 6px;
    bottom: 6px;
    width: 1px;
    background: linear-gradient(180deg,
      rgba(35, 56, 79, 0) 0%,
      var(--k8-line) 6%,
      var(--k8-line) 94%,
      rgba(35, 56, 79, 0) 100%);
  }
  .page-disclaimer .doc-sec{
    display: grid;
    grid-template-columns: var(--doc-num-w) minmax(0, 1fr);
    column-gap: var(--doc-col-gap);
    padding: 32px 0 38px;
  }
  .page-disclaimer .doc-sec__num{
    margin-bottom: 0;
    padding-top: 7px;
    font-size: 13px;
    text-align: right;
  }
  .page-disclaimer .doc-foot{
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
  }
}

/* ---------- 宽屏：目录常驻展开 ---------- */
@media (min-width: 820px){
  .page-disclaimer .doc-hero__inner{
    grid-template-columns: minmax(0, 1.2fr) minmax(0, .8fr);
  }
  .page-disclaimer .doc-toc__summary{
    display: none;
  }
  .page-disclaimer .doc-toc:not([open]) > .doc-toc__list,
  .page-disclaimer .doc-toc[open] > .doc-toc__list{
    display: flex;
    flex-wrap: wrap;
    gap: 4px 18px;
    margin-top: 0;
    padding-top: 0;
    border-top: 0;
  }
}

@media (prefers-reduced-motion: reduce){
  .page-disclaimer .doc-toc__link{
    transition: none;
  }
}
<<<END>>>