.page-disclaimer {
  --usage-rail: 236px;
  --usage-gap: clamp(24px, 4vw, 56px);
  --usage-rule-bg: linear-gradient(180deg, rgba(28, 58, 50, .94), rgba(21, 43, 37, .62));
  display: block;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  overflow: hidden;
  padding: clamp(16px, 3vw, 26px) 0 clamp(34px, 5vw, 66px);
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: -1px 0 auto 0;
  height: min(580px, 86%);
  background:
    radial-gradient(92% 120% at 6% 0%, rgba(23, 201, 100, .18), transparent 62%),
    radial-gradient(72% 104% at 94% 8%, rgba(37, 217, 232, .12), transparent 60%);
  clip-path: polygon(0 0, 100% 0, 100% 56%, 0 100%);
  pointer-events: none;
  z-index: 0;
}

.page-disclaimer .usage-hero .shell {
  position: relative;
  z-index: 1;
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: clamp(24px, 4vw, 46px);
  align-items: center;
  margin-top: clamp(18px, 3vw, 30px);
}

.page-disclaimer .usage-hero__copy h1 {
  font-family: var(--font-display);
  font-size: clamp(29px, 5.2vw, 56px);
  font-weight: 900;
  line-height: 1.12;
  letter-spacing: -.01em;
  color: var(--white);
  margin: 0 0 clamp(14px, 2vw, 20px);
  max-width: 18em;
}

.page-disclaimer .usage-hero__lead {
  margin: 0;
  max-width: 47ch;
  font-size: clamp(15.5px, 1.8vw, 17.5px);
  line-height: 1.78;
  color: rgba(244, 248, 245, .82);
}

.page-disclaimer .usage-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-disclaimer .usage-hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: clamp(18px, 2.6vw, 26px) 0 0;
  padding: 0;
}

.page-disclaimer .usage-hero__figure {
  border-radius: var(--r-lg);
  overflow: hidden;
  margin: 0;
  border: 1px solid var(--line);
  box-shadow: 0 24px 60px -32px rgba(0, 0, 0, .9);
}

.page-disclaimer .usage-hero__figure img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 2;
  object-fit: cover;
}

/* ---------- 主体分栏 ---------- */
.page-disclaimer .usage-body {
  padding-bottom: clamp(30px, 5vw, 60px);
}

.page-disclaimer .usage-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: var(--usage-gap);
  align-items: start;
}

.page-disclaimer .usage-rail__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .2em;
  color: var(--mute);
  margin: 0 0 12px;
}

.page-disclaimer .usage-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
  grid-auto-flow: column;
  grid-auto-columns: max-content;
  overflow-x: auto;
  max-width: 100%;
  padding-bottom: 6px;
  scrollbar-width: thin;
}

.page-disclaimer .usage-toc__link {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: baseline;
  gap: 8px;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--r-pill);
  color: rgba(244, 248, 245, .74);
  text-decoration: none;
  font-size: 13.5px;
  line-height: 1.4;
  white-space: nowrap;
  transition: color .2s var(--ease), border-color .2s var(--ease), background-color .2s var(--ease);
}

.page-disclaimer .usage-toc__n {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--cyan);
  letter-spacing: .04em;
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible {
  color: var(--white);
  border-color: var(--cyan);
}

.page-disclaimer .usage-toc__link[aria-current="true"] {
  color: var(--ink);
  background: var(--signal);
  border-color: var(--signal);
  font-weight: 500;
}

.page-disclaimer .usage-toc__link[aria-current="true"] .usage-toc__n {
  color: rgba(8, 37, 31, .7);
}

.page-disclaimer .usage-rail__note {
  display: none;
  margin: 16px 0 0;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--mute);
}

/* ---------- 规则卡带 ---------- */
.page-disclaimer .rule {
  position: relative;
  overflow: hidden;
  background: var(--usage-rule-bg);
  border-radius: var(--r-lg);
  padding: clamp(20px, 3.2vw, 38px) clamp(16px, 3vw, 36px) clamp(12px, 2vw, 22px);
  margin-bottom: clamp(16px, 2.6vw, 28px);
}

.page-disclaimer .rule:last-child {
  margin-bottom: 0;
}

.page-disclaimer .rule::before {
  content: "";
  position: absolute;
  inset: 0 0 auto 0;
  height: 4px;
  background: linear-gradient(90deg, var(--signal), var(--cyan) 56%, var(--amber));
  opacity: .9;
}

.page-disclaimer .rule__head {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(12px, 2.4vw, 26px);
  align-items: start;
  padding-bottom: clamp(10px, 1.8vw, 16px);
}

.page-disclaimer .rule__num {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(34px, 6.4vw, 58px);
  line-height: .92;
  letter-spacing: -.03em;
  color: var(--signal);
  display: block;
}

.page-disclaimer .usage-rules > .rule:nth-of-type(3n+2) .rule__num {
  color: var(--cyan);
}

.page-disclaimer .usage-rules > .rule:nth-of-type(3n) .rule__num {
  color: var(--amber);
}

.page-disclaimer .rule__title {
  font-family: var(--font-display);
  font-size: clamp(21px, 3vw, 30px);
  font-weight: 900;
  line-height: 1.24;
  color: var(--white);
  margin: 0 0 8px;
}

.page-disclaimer .rule__lead {
  margin: 0;
  font-size: clamp(14px, 1.7vw, 15.5px);
  line-height: 1.76;
  color: rgba(244, 248, 245, .7);
  max-width: 52ch;
}

.page-disclaimer .rule__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.page-disclaimer .rule__item {
  display: grid;
  grid-template-columns: 2.9em minmax(0, 1fr);
  gap: 8px 14px;
  padding: clamp(11px, 1.6vw, 15px) 0;
  border-top: 1px dashed var(--line);
}

.page-disclaimer .rule__item:first-child {
  border-top: 0;
}

.page-disclaimer .rule__idx {
  font-family: var(--font-mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--mute);
  letter-spacing: .02em;
}

.page-disclaimer .rule__item p {
  margin: 0;
  font-size: clamp(14.5px, 1.65vw, 16px);
  line-height: 1.78;
  color: rgba(244, 248, 245, .85);
}

/* ---------- 引用格式块 ---------- */
.page-disclaimer .cite-box {
  margin: clamp(12px, 2vw, 18px) 0;
  padding: clamp(13px, 2vw, 20px) clamp(14px, 2.4vw, 24px);
  background: var(--deep);
  border: 1px dashed var(--line);
  border-radius: var(--r-md);
  overflow-x: auto;
  max-width: 100%;
}

.page-disclaimer .cite-box__label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: .16em;
  color: var(--amber);
  margin: 0 0 8px;
}

.page-disclaimer .cite-box__code {
  margin: 0;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(12.5px, 1.5vw, 14px);
  line-height: 1.8;
  color: var(--white);
  white-space: nowrap;
  user-select: all;
  -webkit-user-select: all;
}

/* ---------- 协助区块 ---------- */
.page-disclaimer .usage-help {
  padding: clamp(10px, 2.4vw, 24px) 0 clamp(40px, 7vw, 82px);
}

.page-disclaimer .usage-help__inner {
  display: grid;
  gap: clamp(18px, 3vw, 30px);
  padding: clamp(22px, 3.6vw, 44px);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background:
    linear-gradient(118deg, rgba(23, 201, 100, .14), rgba(37, 217, 232, .07) 58%, rgba(255, 176, 32, .08));
}

.page-disclaimer .usage-help__title {
  font-family: var(--font-display);
  font-size: clamp(22px, 3.2vw, 32px);
  font-weight: 900;
  line-height: 1.22;
  color: var(--white);
  margin: 0 0 10px;
}

.page-disclaimer .usage-help__text {
  margin: 0;
  max-width: 52ch;
  font-size: clamp(14.5px, 1.7vw, 16px);
  line-height: 1.78;
  color: rgba(244, 248, 245, .8);
}

.page-disclaimer .usage-help__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .rule__item {
    grid-template-columns: 3.2em minmax(0, 1fr);
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.06fr) minmax(0, .94fr);
    gap: clamp(30px, 4vw, 56px);
  }

  .page-disclaimer .usage-hero__figure {
    transform: translateY(-8px) rotate(-.7deg);
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-layout {
    grid-template-columns: var(--usage-rail) minmax(0, 1fr);
    gap: clamp(32px, 4vw, 64px);
  }

  .page-disclaimer .usage-rail {
    position: sticky;
    top: calc(var(--head-h) + 28px);
    align-self: start;
  }

  .page-disclaimer .usage-toc__list {
    grid-auto-flow: row;
    grid-auto-columns: auto;
    gap: 2px;
    overflow-x: visible;
    padding-bottom: 0;
  }

  .page-disclaimer .usage-toc__link {
    border: 0;
    border-left: 2px solid var(--line);
    border-radius: 0;
    padding: 9px 12px 9px 14px;
    white-space: normal;
    font-size: 14px;
  }

  .page-disclaimer .usage-toc__link[aria-current="true"] {
    background: rgba(23, 201, 100, .1);
    border-left-color: var(--signal);
    border-radius: 0 var(--r-md) var(--r-md) 0;
    color: var(--signal);
    font-weight: 500;
  }

  .page-disclaimer .usage-toc__link[aria-current="true"] .usage-toc__n {
    color: var(--signal);
  }

  .page-disclaimer .usage-rail__note {
    display: block;
  }

  .page-disclaimer .usage-help__inner {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-hero__figure {
    transform: none;
  }

  .page-disclaimer .usage-toc__link {
    transition: none;
  }
}

/* ---------- 打印 ---------- */
@media print {
  .page-disclaimer .usage-hero::before,
  .page-disclaimer .usage-hero__figure,
  .page-disclaimer .usage-hero__actions,
  .page-disclaimer .usage-rail,
  .page-disclaimer .usage-help {
    display: none !important;
  }

  .page-disclaimer {
    color: #111;
  }

  .page-disclaimer .usage-hero__copy h1,
  .page-disclaimer .usage-hero__lead,
  .page-disclaimer .rule__title,
  .page-disclaimer .rule__lead,
  .page-disclaimer .rule__num,
  .page-disclaimer .rule__idx,
  .page-disclaimer .rule__item p,
  .page-disclaimer .cite-box__label,
  .page-disclaimer .cite-box__code {
    color: #111 !important;
  }

  .page-disclaimer .rule {
    background: none !important;
    border: 1px solid #bbb;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .page-disclaimer .rule::before {
    display: none;
  }

  .page-disclaimer .cite-box {
    background: #f4f4f4;
    border-color: #999;
  }

  .page-disclaimer .cite-box__code {
    white-space: normal;
  }
}
<<<END>>>