.page-disclaimer {
  --disc-space: clamp(30px, 5vw, 56px);
  background: var(--ink);
  color: var(--fog);
  font-family: var(--font-body);
  overflow-x: clip;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  border-bottom: 1px solid var(--line);
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(139, 92, 246, .22), transparent 62%),
    radial-gradient(90% 80% at 92% 6%, rgba(43, 245, 208, .12), transparent 60%),
    var(--ink);
}

.page-disclaimer .usage-hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.page-disclaimer .usage-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: .3;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background: linear-gradient(180deg, rgba(5, 10, 24, .45) 0%, rgba(5, 10, 24, .86) 58%, var(--ink) 100%);
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  padding-top: clamp(40px, 8vw, 84px);
  padding-bottom: clamp(36px, 6vw, 68px);
}

.page-disclaimer .usage-hero .breadcrumb {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0 0 22px;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-hero .breadcrumb__item {
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

.page-disclaimer .usage-hero .breadcrumb__item + .breadcrumb__item::before {
  content: "/";
  margin-right: 8px;
  color: var(--line);
}

.page-disclaimer .usage-hero .breadcrumb__item a {
  color: inherit;
  text-decoration: none;
}

.page-disclaimer .usage-hero .breadcrumb__item a:hover {
  color: var(--cyan);
}

.page-disclaimer .usage-hero h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 7vw, 60px);
  line-height: 1.04;
  letter-spacing: -.02em;
  margin: 12px 0 18px;
  max-width: 16ch;
  color: var(--fog);
}

.page-disclaimer .usage-hero .lede {
  max-width: 44ch;
  margin: 0;
  font-size: clamp(15px, 1.6vw, 16.5px);
  line-height: 1.78;
  color: rgba(233, 241, 255, .78);
}

.page-disclaimer .usage-hero__stats {
  display: flex;
  flex-wrap: wrap;
  gap: 18px 34px;
  list-style: none;
  margin: 30px 0 0;
  padding: 22px 0 0;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-hero__stats li {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.page-disclaimer .usage-hero__stats .data {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 19px;
  font-weight: 600;
  letter-spacing: -.01em;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__stats span {
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--mist);
}

/* ---------- 主体骨架 ---------- */
.page-disclaimer .usage-shell {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 5vw, 48px);
  padding-top: clamp(36px, 6vw, 72px);
  padding-bottom: clamp(48px, 8vw, 96px);
}

.page-disclaimer .usage-toc {
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-1);
  padding: 18px 16px 20px;
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .usage-toc__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-disclaimer .usage-toc .toc-link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 10px;
  padding: 9px 10px;
  border-left: 2px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--mist);
  font-size: 14px;
  text-decoration: none;
  transition: color .2s ease, background .2s ease, border-color .2s ease;
}

.page-disclaimer .usage-toc .toc-link:hover {
  color: var(--fog);
  background: rgba(43, 245, 208, .06);
}

.page-disclaimer .usage-toc .toc-link.is-active {
  color: var(--fog);
  border-left-color: var(--cyan);
  background: rgba(43, 245, 208, .08);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--cyan);
}

/* ---------- 编号条目 ---------- */
.page-disclaimer .usage-entry {
  position: relative;
  border-left: 1px solid var(--line);
  padding-left: clamp(16px, 3.6vw, 32px);
  padding-bottom: var(--disc-space);
  scroll-margin-top: 120px;
}

.page-disclaimer .usage-body > .usage-entry:last-child {
  padding-bottom: 0;
}

.page-disclaimer .usage-entry__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 10px 14px;
  margin-bottom: 16px;
}

.page-disclaimer .usage-entry__num {
  font-family: var(--font-data);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .06em;
  color: var(--cyan);
  padding: 3px 9px;
  border: 1px solid rgba(43, 245, 208, .36);
  border-radius: 999px;
  background: rgba(43, 245, 208, .07);
}

.page-disclaimer .usage-entry__title {
  flex: 1 1 240px;
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(21px, 3.4vw, 29px);
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-disclaimer .usage-entry p {
  max-width: 44ch;
  margin: 0 0 16px;
  font-size: 15.5px;
  line-height: 1.78;
  color: rgba(233, 241, 255, .8);
}

.page-disclaimer .usage-entry p a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 208, .34);
}

.page-disclaimer .usage-entry p a:hover {
  border-bottom-color: var(--cyan);
}

.page-disclaimer .usage-list {
  list-style: none;
  margin: 0 0 22px;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-list li {
  position: relative;
  max-width: 62ch;
  padding-left: 20px;
  font-size: 15px;
  line-height: 1.72;
  color: rgba(233, 241, 255, .76);
}

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: .72em;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cyan);
  opacity: .68;
}

.page-disclaimer .usage-list li a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(43, 245, 208, .34);
}

.page-disclaimer .usage-list li a:hover {
  border-bottom-color: var(--cyan);
}

.page-disclaimer .usage-flag {
  display: inline-flex;
  align-items: flex-start;
  gap: 9px;
  max-width: 58ch;
  margin: 2px 0 0;
  padding: 11px 15px;
  border: 1px solid rgba(255, 122, 47, .45);
  border-radius: var(--radius-sm);
  background: rgba(255, 122, 47, .07);
  color: #FFC7A3;
  font-size: 13.5px;
  line-height: 1.65;
}

.page-disclaimer .usage-flag::before {
  content: "!";
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--orange);
}

.page-disclaimer .usage-flag a {
  color: #FFD9BE;
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 122, 47, .55);
}

.page-disclaimer .usage-flag a:hover {
  color: #fff;
}

/* ---------- 折叠细节 ---------- */
.page-disclaimer .usage-details {
  max-width: 62ch;
  margin: 0 0 22px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.page-disclaimer .usage-details summary {
  display: flex;
  align-items: center;
  gap: 9px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  color: var(--cyan);
  letter-spacing: .01em;
}

.page-disclaimer .usage-details summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .usage-details summary::before {
  content: "+";
  font-family: var(--font-data);
  font-weight: 700;
  color: var(--violet);
}

.page-disclaimer .usage-details[open] summary::before {
  content: "–";
}

.page-disclaimer .usage-details ul.usage-list {
  margin: 14px 0 0;
}

.page-disclaimer .usage-details ul.usage-list li::before {
  background: var(--violet);
  opacity: .85;
}

/* ---------- 后续栏目 ---------- */
.page-disclaimer .usage-next {
  border-top: 1px solid var(--line);
  background: linear-gradient(180deg, rgba(11, 20, 40, .72), transparent);
  padding: clamp(44px, 7vw, 84px) 0 clamp(56px, 8vw, 96px);
}

.page-disclaimer .usage-next h2 {
  margin: 8px 0 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(22px, 3.2vw, 30px);
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-disclaimer .usage-routes {
  list-style: none;
  margin: 26px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 12px;
}

.page-disclaimer .usage-routes a {
  display: flex;
  flex-direction: column;
  gap: 8px;
  height: 100%;
  padding: 18px 18px 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--ink-1);
  color: inherit;
  text-decoration: none;
  transition: border-color .25s ease, background .25s ease, transform .25s ease;
}

.page-disclaimer .usage-routes a:hover {
  border-color: rgba(43, 245, 208, .5);
  background: var(--ink-2);
  transform: translateY(-2px);
}

.page-disclaimer .usage-routes__k {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -.01em;
  color: var(--fog);
}

.page-disclaimer .usage-routes__d {
  font-size: 13.5px;
  line-height: 1.65;
  color: var(--mist);
}

.page-disclaimer .usage-top {
  margin-top: 30px;
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .usage-routes {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .usage-hero .lede {
    font-size: 16.5px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-shell {
    grid-template-columns: 232px minmax(0, 1fr);
    gap: clamp(40px, 5vw, 76px);
    align-items: start;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: 104px;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .usage-routes {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}
<<<END>>>