.page-disclaimer {
  background-color: var(--ink-deep);
  color: var(--paper);
  overflow-x: clip;
}

/* ---------- 面包屑 ---------- */
.page-disclaimer .usage-crumbs {
  padding-top: 22px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  padding: clamp(20px, 3vw, 34px) 0 clamp(44px, 6vw, 78px);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -2;
  background-image:
    linear-gradient(to right, var(--ink-line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ink-line) 1px, transparent 1px);
  background-size: 92px 92px;
  opacity: .55;
  -webkit-mask-image: radial-gradient(ellipse 78% 70% at 72% 32%, #000 12%, transparent 74%);
  mask-image: radial-gradient(ellipse 78% 70% at 72% 32%, #000 12%, transparent 74%);
  pointer-events: none;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(1080px 520px at 80% -12%, rgba(111, 233, 255, .15), transparent 62%),
    radial-gradient(820px 440px at 4% 110%, rgba(185, 168, 255, .11), transparent 66%),
    radial-gradient(620px 340px at 46% 124%, rgba(255, 107, 44, .09), transparent 72%);
  pointer-events: none;
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(26px, 4vw, 48px);
  align-items: center;
}

@media (min-width: 940px) {
  .page-disclaimer .usage-hero__inner {
    grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  }
}

.page-disclaimer .usage-hero h1 {
  margin: 16px 0 0;
  font-family: var(--font-serif);
  font-weight: 700;
  font-size: clamp(30px, 5.2vw, 50px);
  line-height: 1.2;
  letter-spacing: .01em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lead {
  margin: 18px 0 0;
  max-width: 44ch;
  font-size: 16px;
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
  margin: 26px 0 0;
  padding: 18px 0 0;
  list-style: none;
  border-top: 1px solid var(--ink-line);
}

.page-disclaimer .usage-hero__meta li {
  display: flex;
  align-items: baseline;
  gap: 7px;
  font-size: 13px;
  color: var(--mist);
}

.page-disclaimer .usage-hero__meta .num {
  font-family: var(--font-num);
  font-size: 30px;
  line-height: 1;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
}

.page-disclaimer .usage-hero__meta li:nth-child(2) .num {
  color: var(--amber);
}

.page-disclaimer .usage-hero__meta li:nth-child(3) .num {
  color: var(--violet);
}

.page-disclaimer .usage-hero__media {
  position: relative;
  margin: 0;
  border-radius: 14px;
  overflow: hidden;
  border: 1px solid var(--ink-line);
  background: linear-gradient(150deg, rgba(11, 20, 40, .95), rgba(6, 11, 24, .95));
}

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

.page-disclaimer .usage-hero__media .media-frame__caption {
  padding: 12px 16px;
  font-size: 12px;
  letter-spacing: .04em;
  color: var(--mist);
  border-top: 1px solid var(--ink-line);
}

/* ---------- 布局：目录 + 条款 ---------- */
.page-disclaimer .usage-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(30px, 4.6vw, 62px);
  padding-top: clamp(44px, 6vw, 84px);
  padding-bottom: clamp(60px, 8vw, 112px);
}

@media (min-width: 1024px) {
  .page-disclaimer .usage-layout {
    grid-template-columns: 236px minmax(0, 1fr);
    align-items: start;
  }
}

/* ---------- 条款目录 ---------- */
.page-disclaimer .usage-toc {
  border: 1px solid var(--ink-line);
  border-radius: 12px;
  background: var(--glass);
  padding: 16px 14px;
}

.page-disclaimer .usage-toc__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mist);
}

.page-disclaimer .usage-toc__list {
  display: grid;
  gap: 2px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-toc__link {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 14px;
  line-height: 1.45;
  color: var(--mist);
  text-decoration: none;
  transition: color .22s var(--ease), background-color .22s var(--ease);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  color: var(--paper);
  background-color: rgba(111, 233, 255, .09);
}

.page-disclaimer .usage-toc__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .08em;
  color: var(--cyan);
  opacity: .8;
}

@media (max-width: 1023px) {
  .page-disclaimer .usage-toc {
    padding: 12px 12px 8px;
  }

  .page-disclaimer .usage-toc__list {
    grid-auto-flow: column;
    grid-auto-columns: max-content;
    overflow-x: auto;
    padding-bottom: 6px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
  }

  .page-disclaimer .usage-toc__link {
    white-space: nowrap;
    border: 1px solid var(--ink-line);
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .usage-toc {
    position: sticky;
    top: calc(var(--header-h) + 26px);
  }
}

/* ---------- 条款块 ---------- */
.page-disclaimer .usage-clauses {
  display: grid;
  gap: clamp(16px, 2.6vw, 26px);
  max-width: 780px;
}

.page-disclaimer .clause {
  position: relative;
  padding: clamp(22px, 3.4vw, 34px) clamp(20px, 3vw, 36px) clamp(22px, 3.4vw, 34px) clamp(26px, 3.8vw, 42px);
  border: 1px solid var(--ink-line);
  border-radius: 14px;
  background: linear-gradient(178deg, rgba(11, 20, 40, .92) 0%, rgba(6, 11, 24, .92) 100%);
  scroll-margin-top: calc(var(--header-h) + 26px);
  transition: border-color .24s var(--ease), transform .24s var(--ease);
}

.page-disclaimer .clause:hover,
.page-disclaimer .clause:focus-within {
  border-color: rgba(111, 233, 255, .5);
  transform: translateY(-2px);
}

.page-disclaimer .clause::before {
  content: "";
  position: absolute;
  left: 0;
  top: 22px;
  bottom: 22px;
  width: 3px;
  border-radius: 0 3px 3px 0;
  background: var(--cyan);
  opacity: .5;
  transition: opacity .24s var(--ease);
}

.page-disclaimer .clause:hover::before,
.page-disclaimer .clause:focus-within::before {
  opacity: 1;
}

.page-disclaimer .clause:nth-child(2)::before {
  background: var(--heat);
}

.page-disclaimer .clause:nth-child(3)::before {
  background: var(--amber);
}

.page-disclaimer .clause:nth-child(4)::before {
  background: var(--violet);
}

.page-disclaimer .clause:nth-child(5)::before {
  background: var(--cyan);
}

.page-disclaimer .clause:nth-child(6)::before {
  background: var(--heat);
}

.page-disclaimer .clause__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 12px;
}

.page-disclaimer .clause__no {
  flex: none;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--cyan);
  padding: 3px 8px;
  border: 1px solid rgba(111, 233, 255, .34);
  border-radius: 6px;
  background-color: rgba(111, 233, 255, .07);
}

.page-disclaimer .clause__title {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(19px, 2.4vw, 23px);
  line-height: 1.4;
  color: var(--paper);
}

.page-disclaimer .clause__rule {
  display: block;
  height: 2px;
  margin: 14px 0 0;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--cyan), rgba(111, 233, 255, 0));
  width: 76px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(1) .clause__rule {
  width: 96px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(2) .clause__rule {
  width: 118px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(3) .clause__rule {
  width: 84px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(4) .clause__rule {
  width: 92px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(5) .clause__rule {
  width: 112px;
}

.page-disclaimer .usage-clauses > .clause:nth-child(6) .clause__rule {
  width: 78px;
}

.page-disclaimer .clause__body {
  display: grid;
  gap: 11px;
  margin-top: 16px;
  font-size: 15px;
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .clause__body p {
  margin: 0;
}

.page-disclaimer .clause__body strong {
  font-weight: 500;
  color: var(--paper);
}

.page-disclaimer .clause__body a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 233, 255, .38);
  transition: border-color .2s var(--ease), color .2s var(--ease);
}

.page-disclaimer .clause__body a:hover,
.page-disclaimer .clause__body a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

.page-disclaimer .clause__body .copy-btn {
  justify-self: start;
  margin-top: 2px;
}

/* ---------- 页尾状态带 ---------- */
.page-disclaimer .usage-footband {
  border-top: 1px solid var(--ink-line);
  background:
    linear-gradient(100deg, rgba(111, 233, 255, .10) 0%, rgba(255, 107, 44, .09) 52%, rgba(185, 168, 255, .10) 100%),
    var(--ink-base);
  padding: clamp(26px, 4vw, 42px) 0;
}

.page-disclaimer .usage-footband__inner {
  display: grid;
  gap: 12px;
}

@media (min-width: 860px) {
  .page-disclaimer .usage-footband__inner {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    align-items: baseline;
    gap: 20px 40px;
  }
}

.page-disclaimer .usage-footband__text,
.page-disclaimer .usage-footband__links {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
}

.page-disclaimer .usage-footband__text {
  color: var(--paper);
}

.page-disclaimer .usage-footband__links {
  color: var(--mist);
}

@media (min-width: 860px) {
  .page-disclaimer .usage-footband__links {
    text-align: right;
  }
}

.page-disclaimer .usage-footband__links a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(111, 233, 255, .38);
}

.page-disclaimer .usage-footband__links a:hover,
.page-disclaimer .usage-footband__links a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- 返回顶部 ---------- */
.page-disclaimer .backtop {
  position: fixed;
  right: clamp(16px, 4vw, 40px);
  bottom: clamp(18px, 4vw, 36px);
  z-index: 40;
}

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