.page-disclaimer {
  --usage-indent: 44px;
  padding-bottom: clamp(56px, 8vw, 104px);
  color: var(--ice);
}

.page-disclaimer .breadcrumb {
  margin-top: 18px;
}

/* 顶部：版本摘要 + 视觉 */
.page-disclaimer .usage-hero {
  display: grid;
  gap: clamp(22px, 3.5vw, 44px);
  padding: clamp(18px, 3vw, 34px) 0 clamp(22px, 3.5vw, 38px);
  border-bottom: 1px solid var(--steel);
}

.page-disclaimer .usage-hero__text {
  min-width: 0;
}

.page-disclaimer .usage-hero h1 {
  margin: 14px 0 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(34px, 6.4vw, 68px);
  line-height: 1.04;
  letter-spacing: 0.02em;
  color: var(--ice);
  text-wrap: balance;
}

.page-disclaimer .usage-lead {
  margin: 18px 0 0;
  max-width: 58ch;
  font-size: clamp(14px, 1.6vw, 16px);
  line-height: 1.85;
  color: var(--mist);
}

.page-disclaimer .usage-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
}

.page-disclaimer .usage-hero__media {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--steel);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(150deg, rgba(111, 231, 255, 0.14), rgba(5, 10, 20, 0) 58%),
    var(--panel);
  box-shadow: var(--shadow-panel);
}

.page-disclaimer .usage-hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(42, 59, 85, 0.55) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(42, 59, 85, 0.55) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.35;
  mix-blend-mode: screen;
}

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

/* 摘要条 */
.page-disclaimer .usage-brief {
  display: grid;
  gap: 1px;
  margin-top: clamp(22px, 3.5vw, 36px);
  background: var(--steel);
  border: 1px solid var(--steel);
  border-radius: var(--radius-panel-alt);
  overflow: hidden;
}

.page-disclaimer .usage-brief__item {
  padding: 16px 18px;
  background: linear-gradient(160deg, var(--panel), var(--deep-2));
}

.page-disclaimer .usage-brief__label {
  display: block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--mist);
}

.page-disclaimer .usage-brief__value {
  display: block;
  margin-top: 8px;
  font-size: 14px;
  line-height: 1.6;
  color: var(--ice);
}

.page-disclaimer .mono {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  color: var(--cyan);
  letter-spacing: 0.01em;
}

/* 主体两栏 */
.page-disclaimer .usage-layout {
  display: grid;
  gap: clamp(24px, 4vw, 52px);
  padding-top: clamp(26px, 4vw, 46px);
}

.page-disclaimer .usage-body {
  min-width: 0;
}

/* 条款折叠 */
.page-disclaimer .clause {
  border-bottom: 1px solid var(--steel);
}

.page-disclaimer .clause:first-of-type {
  border-top: 1px solid var(--steel);
}

.page-disclaimer .clause > summary {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 14px;
  padding: 20px 4px 20px 0;
  list-style: none;
  cursor: pointer;
  transition: background-color 0.2s var(--ease);
}

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

.page-disclaimer .clause > summary:hover {
  background: linear-gradient(90deg, rgba(111, 231, 255, 0.06), transparent 70%);
}

.page-disclaimer .clause > summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 3px;
  border-radius: 4px;
}

.page-disclaimer .clause__index {
  min-width: 26px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.08em;
  color: var(--orange);
}

.page-disclaimer .clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(19px, 2.6vw, 27px);
  line-height: 1.25;
  letter-spacing: 0.02em;
  color: var(--ice);
}

.page-disclaimer .clause__arrow {
  width: 9px;
  height: 9px;
  margin-right: 4px;
  border-right: 2px solid var(--cyan);
  border-bottom: 2px solid var(--cyan);
  transform: rotate(45deg) translate(-2px, -2px);
  transition: transform 0.28s var(--ease);
}

.page-disclaimer .clause[open] .clause__arrow {
  transform: rotate(225deg) translate(-2px, -2px);
}

.page-disclaimer .clause__body {
  padding: 0 0 26px;
  animation: usage-fade 0.28s var(--ease) both;
}

@keyframes usage-fade {
  from { opacity: 0; transform: translateY(-6px); }
  to { opacity: 1; transform: translateY(0); }
}

.page-disclaimer .clause__body p {
  margin: 0 0 14px;
  max-width: 68ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: var(--ice);
}

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

.page-disclaimer .clause__body ul {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.page-disclaimer .clause__body li {
  position: relative;
  padding-left: 18px;
  max-width: 68ch;
  font-size: 15px;
  line-height: 1.8;
  color: var(--mist);
}

.page-disclaimer .clause__body li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 0.72em;
  width: 6px;
  height: 6px;
  background: var(--cyan);
  transform: rotate(45deg);
}

.page-disclaimer .clause__body a {
  color: var(--cyan);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-thickness: 1px;
}

.page-disclaimer .clause__body a:hover {
  color: var(--orange);
}

/* 结尾行动面板 */
.page-disclaimer .usage-cta {
  margin-top: clamp(30px, 4.5vw, 52px);
  padding: clamp(20px, 3vw, 32px);
  border: 1px solid var(--steel);
  border-radius: var(--radius-panel);
  background:
    linear-gradient(140deg, rgba(255, 138, 43, 0.12), rgba(111, 231, 255, 0.07) 58%, transparent 92%),
    var(--deep-2);
}

.page-disclaimer .usage-cta__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(20px, 2.6vw, 26px);
  letter-spacing: 0.02em;
  color: var(--ice);
}

.page-disclaimer .usage-cta__text {
  margin: 10px 0 0;
  max-width: 62ch;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--mist);
}

.page-disclaimer .usage-cta__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 20px;
}

/* 侧栏目录 */
.page-disclaimer .usage-rail {
  min-width: 0;
  padding-top: 16px;
  border-top: 1px solid var(--steel);
}

.page-disclaimer .usage-rail__title {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--cyan);
}

.page-disclaimer .usage-rail__list {
  display: flex;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0 0 8px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .usage-rail__link {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--steel);
  border-radius: 999px;
  font-size: 13.5px;
  line-height: 1.3;
  color: var(--mist);
  text-decoration: none;
  white-space: nowrap;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background-color 0.2s var(--ease);
}

.page-disclaimer .usage-rail__link:hover,
.page-disclaimer .usage-rail__link:focus-visible {
  color: var(--ice);
  border-color: var(--cyan);
  background: rgba(111, 231, 255, 0.08);
}

.page-disclaimer .usage-rail__note {
  display: none;
  margin: 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.2em;
  color: var(--mist);
}

@media (min-width: 720px) {
  .page-disclaimer .clause__body {
    padding-left: var(--usage-indent);
  }

  .page-disclaimer .usage-brief {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

@media (min-width: 980px) {
  .page-disclaimer .usage-hero {
    grid-template-columns: minmax(0, 1.02fr) minmax(0, 0.98fr);
    align-items: end;
  }

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

  .page-disclaimer .usage-rail {
    position: sticky;
    top: calc(var(--header-h) + 26px);
    padding: 4px 0 4px 20px;
    border-top: 0;
    border-left: 1px solid var(--steel);
  }

  .page-disclaimer .usage-rail__list {
    display: grid;
    gap: 2px;
    margin-top: 14px;
    padding: 0;
    overflow: visible;
  }

  .page-disclaimer .usage-rail__link {
    min-height: 0;
    padding: 8px 0;
    border: 0;
    border-radius: 0;
    white-space: normal;
    background: none;
    border-bottom: 1px solid transparent;
    transition: color 0.2s var(--ease), padding-left 0.2s var(--ease), border-color 0.2s var(--ease);
  }

  .page-disclaimer .usage-rail__link:hover,
  .page-disclaimer .usage-rail__link:focus-visible {
    padding-left: 6px;
    background: none;
    border-bottom-color: var(--steel);
  }

  .page-disclaimer .usage-rail__note {
    display: block;
    margin-top: 26px;
    padding-left: 8px;
    border-left: 1px solid var(--steel);
    writing-mode: vertical-rl;
    max-height: 240px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .clause__body {
    animation: none;
  }

  .page-disclaimer .clause__arrow {
    transition: none;
  }

  .page-disclaimer .usage-rail__link,
  .page-disclaimer .clause > summary {
    transition: none;
  }
}

@media print {
  .page-disclaimer {
    background: #ffffff;
    color: #111111;
    padding-bottom: 0;
  }

  .page-disclaimer .usage-hero__media,
  .page-disclaimer .usage-brief,
  .page-disclaimer .usage-rail,
  .page-disclaimer .usage-cta,
  .page-disclaimer .clause__arrow {
    display: none !important;
  }

  .page-disclaimer .usage-hero h1,
  .page-disclaimer .clause__title,
  .page-disclaimer .usage-cta__title {
    color: #000000;
  }

  .page-disclaimer .usage-lead,
  .page-disclaimer .clause__body p,
  .page-disclaimer .clause__body li {
    color: #1a1a1a;
  }

  .page-disclaimer .mono {
    color: #000000;
  }

  .page-disclaimer .usage-layout {
    display: block;
    padding-top: 0;
  }

  .page-disclaimer .clause {
    border-color: #cccccc;
    break-inside: avoid;
  }

  .page-disclaimer .clause:first-of-type {
    border-top-color: #cccccc;
  }
}
<<<END>>>