.page-disclaimer{
  --u-body: 17px;
  --u-lead: clamp(18px, 2.6vw, 21px);
  color: var(--mist-050);
  background: var(--ink-950);
  overflow-x: hidden;
}

.page-disclaimer .breadcrumbs{
  padding: 18px 0 8px;
}

/* 首屏拼贴 */
.page-disclaimer .usage-hero{
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line-600);
  background: var(--grad-night);
}
.page-disclaimer .usage-hero::before{
  content: "";
  position: absolute;
  top: -22%;
  right: -12%;
  width: min(560px, 82vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(43,240,208,.18), rgba(43,240,208,0) 66%);
  pointer-events: none;
}
.page-disclaimer .usage-hero::after{
  content: "";
  position: absolute;
  left: -14%;
  bottom: -46%;
  width: min(440px, 72vw);
  aspect-ratio: 1 / 1;
  background: radial-gradient(circle at 50% 50%, rgba(255,162,58,.14), rgba(255,162,58,0) 64%);
  pointer-events: none;
}
.page-disclaimer .usage-hero__grid{
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding: 26px 0 44px;
}
.page-disclaimer .eyebrow{
  color: var(--cyan-400);
  letter-spacing: .18em;
}
.page-disclaimer h1{
  margin: 12px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(30px, 6.6vw, 52px);
  line-height: 1.12;
  letter-spacing: .035em;
  max-width: 18ch;
}
.page-disclaimer .usage-hero__lead{
  margin: 18px 0 0;
  max-width: 33em;
  font-size: var(--u-body);
  line-height: 1.85;
  color: var(--mist-300);
}
.page-disclaimer .usage-hero__tags{
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
}

/* 节奏速览板 */
.page-disclaimer .usage-board{
  border: 1px solid var(--line-600);
  border-radius: var(--radius);
  background: linear-gradient(158deg, rgba(22,69,58,.92) 0%, rgba(10,15,13,.94) 100%);
  box-shadow: 0 18px 40px rgba(0,0,0,.35);
  overflow: hidden;
}
.page-disclaimer .usage-board__row{
  position: relative;
  display: grid;
  gap: 4px;
  padding: 16px 18px 16px 22px;
  border-top: 1px solid var(--line-600);
  outline: none;
}
.page-disclaimer .usage-board__row:first-child{
  border-top: 0;
}
.page-disclaimer .usage-board__row::before{
  content: "";
  position: absolute;
  left: 0;
  top: 14px;
  bottom: 14px;
  width: 2px;
  background: var(--grad-path);
  opacity: .45;
  transition: opacity .22s ease;
}
.page-disclaimer .usage-board__row:hover::before,
.page-disclaimer .usage-board__row:focus::before,
.page-disclaimer .usage-board__row:focus-within::before{
  opacity: 1;
}
.page-disclaimer .usage-board__value{
  font-family: var(--font-mono);
  font-size: 15px;
  letter-spacing: .08em;
  color: var(--cyan-400);
}
.page-disclaimer .usage-board__row:nth-child(3) .usage-board__value{
  color: var(--amber-500);
}
.page-disclaimer .usage-board__label{
  font-size: 15px;
  font-weight: 700;
  line-height: 1.5;
  letter-spacing: .02em;
}
.page-disclaimer .usage-board__hint{
  overflow: hidden;
  max-height: 0;
  opacity: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist-300);
  transition: max-height .24s ease, opacity .24s ease, margin-top .24s ease;
}
.page-disclaimer .usage-board__row:hover .usage-board__hint,
.page-disclaimer .usage-board__row:focus .usage-board__hint,
.page-disclaimer .usage-board__row:focus-within .usage-board__hint{
  max-height: 140px;
  opacity: 1;
  margin-top: 6px;
}

/* 章节色带 */
.page-disclaimer .usage-band{
  height: 6px;
  background: var(--grad-path);
  opacity: .38;
}

/* 条款式章节 */
.page-disclaimer .usage-chapter{
  border-bottom: 1px solid var(--line-600);
  background: var(--ink-950);
}
.page-disclaimer .usage-chapter--tint{
  background: linear-gradient(180deg, #0C1714 0%, #0A0F0D 100%);
}
.page-disclaimer .usage-chapter__inner{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 18px;
  padding: 36px 0 40px;
}
.page-disclaimer .usage-chapter__num{
  display: block;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: .18em;
  color: var(--cyan-400);
}
.page-disclaimer .usage-chapter__title{
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(21px, 3.6vw, 27px);
  line-height: 1.3;
  letter-spacing: .02em;
  color: var(--mist-050);
}
.page-disclaimer .usage-chapter__body{
  max-width: 38em;
}
.page-disclaimer .usage-chapter__body p{
  margin: 0 0 14px;
  font-size: var(--u-body);
  line-height: 1.85;
  color: var(--mist-300);
}
.page-disclaimer .usage-chapter__body p:last-child{
  margin-bottom: 0;
}
.page-disclaimer .usage-chapter__body .usage-lede{
  margin: 0 0 18px;
  padding-left: 14px;
  border-left: 3px solid var(--cyan-400);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--u-lead);
  line-height: 1.6;
  letter-spacing: .01em;
  color: var(--mist-050);
}

/* 列表 */
.page-disclaimer .usage-list{
  display: grid;
  gap: 10px;
  margin: 0 0 14px;
  padding: 0;
  list-style: none;
}
.page-disclaimer .usage-list li{
  position: relative;
  padding-left: 20px;
  font-size: 16px;
  line-height: 1.8;
  color: var(--mist-300);
}
.page-disclaimer .usage-list li::before{
  content: "";
  position: absolute;
  left: 0;
  top: .78em;
  width: 10px;
  height: 2px;
  background: var(--cyan-400);
}

/* 信息图 */
.page-disclaimer .usage-figure{
  margin: 22px 0 0;
  border: 1px solid var(--line-600);
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--pitch-900);
}
.page-disclaimer .usage-figure img{
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
  aspect-ratio: 2 / 1;
  object-fit: cover;
}
.page-disclaimer .usage-figure__cap{
  display: block;
  padding: 10px 14px;
  border-top: 1px solid var(--line-600);
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .12em;
  color: var(--mist-300);
}

/* 可展开补充 */
.page-disclaimer .usage-details{
  margin-top: 20px;
  border: 1px solid var(--line-600);
  border-radius: var(--radius);
  background: rgba(22,69,58,.45);
}
.page-disclaimer .usage-details summary{
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.55;
  color: var(--mist-050);
  transition: color .2s ease;
}
.page-disclaimer .usage-details summary::-webkit-details-marker{
  display: none;
}
.page-disclaimer .usage-details summary::after{
  content: "+";
  font-family: var(--font-mono);
  font-size: 18px;
  line-height: 1;
  color: var(--cyan-400);
}
.page-disclaimer .usage-details[open] summary::after{
  content: "−";
}
.page-disclaimer .usage-details summary:hover{
  color: var(--cyan-400);
}
.page-disclaimer .usage-details summary:focus-visible{
  outline: 2px solid var(--cyan-400);
  outline-offset: 2px;
}
.page-disclaimer .usage-details .usage-list{
  margin: 0;
  padding: 0 16px 16px;
}

/* 后续入口 */
.page-disclaimer .usage-next{
  padding: 40px 0 64px;
}
.page-disclaimer .usage-next__title{
  margin: 0 0 20px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(20px, 3.2vw, 24px);
  letter-spacing: .02em;
  line-height: 1.3;
}
.page-disclaimer .usage-next__grid{
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1px;
  border: 1px solid var(--line-600);
  background: var(--line-600);
}
.page-disclaimer .usage-next__link{
  position: relative;
  display: block;
  padding: 18px 34px 18px 18px;
  background: var(--ink-950);
  color: var(--mist-050);
  text-decoration: none;
  font-size: 16px;
  font-weight: 700;
  line-height: 1.5;
  transition: color .2s ease, background-color .2s ease;
}
.page-disclaimer .usage-next__link::after{
  content: "→";
  position: absolute;
  right: 14px;
  top: 18px;
  font-size: 16px;
  color: var(--cyan-400);
  transition: transform .2s ease;
}
.page-disclaimer .usage-next__link:hover{
  color: var(--cyan-400);
  background: #0C1714;
}
.page-disclaimer .usage-next__link:hover::after{
  transform: translateX(4px);
}
.page-disclaimer .usage-next__link:focus-visible{
  outline: 2px solid var(--cyan-400);
  outline-offset: -2px;
}
.page-disclaimer .usage-next__note{
  display: block;
  margin-top: 6px;
  font-size: 14px;
  font-weight: 400;
  line-height: 1.7;
  color: var(--mist-300);
}

@media (min-width: 640px){
  .page-disclaimer .usage-next__grid{
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 900px){
  .page-disclaimer .usage-hero__grid{
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 48px;
    align-items: start;
    padding: 44px 0 64px;
  }
  .page-disclaimer .usage-chapter__inner{
    grid-template-columns: minmax(0, 200px) minmax(0, 1fr);
    gap: 40px;
    padding: 52px 0 56px;
  }
  .page-disclaimer .usage-chapter__aside{
    position: sticky;
    top: calc(var(--header-h) + 24px);
    align-self: start;
  }
  .page-disclaimer .usage-next{
    padding: 52px 0 76px;
  }
}

@media (min-width: 1100px){
  .page-disclaimer .usage-chapter__inner{
    grid-template-columns: minmax(0, 240px) minmax(0, 1fr);
    gap: 56px;
  }
  .page-disclaimer .usage-next__grid{
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce){
  .page-disclaimer .usage-board__hint,
  .page-disclaimer .usage-board__row::before,
  .page-disclaimer .usage-next__link,
  .page-disclaimer .usage-next__link::after{
    transition: none;
  }
}
<<<END>>>