.page-disclaimer {
  --usage-sticky: calc(var(--header-h) + 24px);
  --usage-ink-soft: rgba(250, 247, 239, 0.82);
  --usage-black-soft: rgba(16, 24, 32, 0.72);
  background: var(--ink);
  color: var(--paper);
  overflow-x: hidden;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding: 26px 0 0;
  background:
    repeating-linear-gradient(90deg, rgba(250, 247, 239, 0.045) 0 1px, transparent 1px 72px),
    radial-gradient(120% 90% at 88% 0%, rgba(53, 224, 208, 0.2), transparent 62%),
    linear-gradient(165deg, var(--ink) 0%, var(--ink-2) 60%, var(--ink-3) 100%);
  border-bottom: 2px solid var(--line-strong);
}

.page-disclaimer .usage-crumbs {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--gray);
}

.page-disclaimer .usage-crumbs a {
  color: var(--aurora);
  text-decoration: none;
}

.page-disclaimer .usage-crumbs a:hover,
.page-disclaimer .usage-crumbs a:focus-visible {
  text-decoration: underline;
}

.page-disclaimer .usage-crumbs__sep {
  color: var(--line-strong);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
  margin-top: 20px;
}

.page-disclaimer .usage-eyebrow {
  color: var(--amber);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.page-disclaimer .usage-hero h1 {
  margin: 14px 0 16px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 8vw, 3.9rem);
  line-height: 1.06;
  letter-spacing: -0.01em;
  color: var(--paper);
  max-width: 20ch;
  overflow-wrap: break-word;
}

.page-disclaimer .usage-hero__lead {
  max-width: 40em;
  color: var(--usage-ink-soft);
  font-size: 1rem;
  line-height: 1.8;
  margin: 0;
}

.page-disclaimer .usage-hero__meta {
  display: grid;
  gap: 10px;
  padding: 16px 18px;
  background: rgba(7, 26, 47, 0.6);
  border: 2px solid var(--line-strong);
  border-left: 4px solid var(--orange);
}

.page-disclaimer .usage-meta__row {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-meta__row:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .usage-meta__k {
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-disclaimer .usage-meta__v {
  font-size: 14px;
  color: var(--aurora);
}

.page-disclaimer .usage-banner {
  margin: 28px 0 0;
}

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

/* ---------- 横向版本号带 ---------- */
.page-disclaimer .usage-rail {
  padding: 22px 0 26px;
  background: var(--ink-2);
  border-bottom: 2px solid var(--line-strong);
}

.page-disclaimer .rail-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
}

.page-disclaimer .rail-card {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 16px;
  background: linear-gradient(150deg, rgba(91, 127, 140, 0.34), rgba(14, 42, 71, 0.9));
  border: 2px solid var(--line-strong);
  box-shadow: var(--shadow-hard-dark);
}

.page-disclaimer .rail-card--alt {
  background: linear-gradient(150deg, rgba(53, 224, 208, 0.18), rgba(14, 42, 71, 0.92));
}

.page-disclaimer .rail-card--web {
  background: linear-gradient(150deg, rgba(246, 184, 74, 0.2), rgba(14, 42, 71, 0.92));
}

.page-disclaimer .rail-card__term {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-disclaimer .rail-card__ver {
  font-size: 1.35rem;
  line-height: 1.2;
  color: var(--paper);
  letter-spacing: 0.02em;
}

.page-disclaimer .rail-card--web .rail-card__ver {
  color: var(--amber);
}

.page-disclaimer .rail-card__note {
  font-size: 0.86rem;
  line-height: 1.65;
  color: var(--usage-ink-soft);
}

.page-disclaimer .rail-card__copy {
  align-self: flex-start;
  font-size: 12px;
  padding: 8px 14px;
  margin-top: 4px;
}

.page-disclaimer .rail-card__link {
  align-self: flex-start;
  margin-top: 4px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--aurora);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  padding-bottom: 2px;
}

.page-disclaimer .rail-card__link:hover,
.page-disclaimer .rail-card__link:focus-visible {
  color: var(--paper);
}

/* ---------- 正文区 ---------- */
.page-disclaimer .usage-body {
  padding: 34px 0 44px;
  background: var(--paper);
  color: var(--black);
}

.page-disclaimer .usage-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 24px;
}

.page-disclaimer .usage-side,
.page-disclaimer .usage-article {
  min-width: 0;
}

.page-disclaimer .usage-toc {
  padding: 18px;
  background: var(--ink-2);
  color: var(--paper);
  border: 2px solid var(--black);
  box-shadow: var(--shadow-hard);
}

.page-disclaimer .usage-toc__title {
  margin: 0 0 14px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
  text-transform: uppercase;
}

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

.page-disclaimer .usage-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 8px 6px;
  font-size: 0.92rem;
  line-height: 1.5;
  color: var(--usage-ink-soft);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease), background 0.2s var(--ease);
}

.page-disclaimer .usage-toc__list a .mono {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.08em;
}

.page-disclaimer .usage-toc__list a:hover,
.page-disclaimer .usage-toc__list a:focus-visible {
  color: var(--paper);
  background: rgba(53, 224, 208, 0.12);
  border-left-color: var(--aurora);
}

.page-disclaimer .usage-toc__list a:hover .mono,
.page-disclaimer .usage-toc__list a:focus-visible .mono {
  color: var(--aurora);
}

.page-disclaimer .usage-toc__block {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-toc__k {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--gray);
  text-transform: uppercase;
}

.page-disclaimer .usage-toc__copy {
  width: 100%;
  font-size: 13px;
  padding: 10px 14px;
}

.page-disclaimer .usage-toc__top {
  display: inline-block;
  margin-top: 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--aurora);
  text-decoration: none;
}

.page-disclaimer .usage-toc__top:hover,
.page-disclaimer .usage-toc__top:focus-visible {
  color: var(--paper);
  text-decoration: underline;
}

/* 章节 */
.page-disclaimer .usage-sec {
  padding-bottom: 26px;
  margin-bottom: 26px;
  border-bottom: 2px solid var(--line-paper);
}

.page-disclaimer .usage-sec:last-child {
  padding-bottom: 0;
  margin-bottom: 0;
  border-bottom: 0;
}

.page-disclaimer .usage-sec__head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}

.page-disclaimer .usage-sec__num {
  flex: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  background: var(--ink);
  color: var(--amber);
  font-size: 14px;
  letter-spacing: 0.06em;
  border: 2px solid var(--black);
  box-shadow: var(--shadow-hard-sm);
}

.page-disclaimer .usage-sec__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.3rem, 5vw, 1.9rem);
  line-height: 1.2;
  letter-spacing: -0.005em;
  color: var(--black);
}

.page-disclaimer .usage-sec .prose {
  color: var(--black);
  font-size: 0.98rem;
  line-height: 1.8;
}

.page-disclaimer .usage-sec .prose p {
  margin: 0 0 12px;
  max-width: 34em;
}

.page-disclaimer .usage-sec .prose p:last-child {
  margin-bottom: 0;
}

.page-disclaimer .usage-prose-gap {
  margin-top: 18px;
}

/* 列表 */
.page-disclaimer .usage-list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-list li {
  position: relative;
  padding-left: 22px;
  font-size: 0.96rem;
  line-height: 1.75;
  color: var(--black);
}

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.68em;
  width: 10px;
  height: 10px;
  background: var(--orange);
  border: 2px solid var(--black);
}

.page-disclaimer .usage-list--tight {
  margin-top: 0;
  gap: 8px;
}

.page-disclaimer .usage-list--tight li {
  font-size: 0.92rem;
  padding-left: 18px;
}

.page-disclaimer .usage-list--tight li::before {
  width: 8px;
  height: 8px;
  background: var(--teal);
  border-width: 1px;
}

/* 系统要求表 */
.page-disclaimer .spec-wrap {
  margin-top: 18px;
  overflow-x: auto;
  border: 2px solid var(--black);
  background: var(--paper);
  box-shadow: var(--shadow-hard);
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .spec-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
  font-size: 0.92rem;
}

.page-disclaimer .spec-table thead th {
  padding: 11px 14px;
  text-align: left;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.page-disclaimer .spec-table tbody th,
.page-disclaimer .spec-table tbody td {
  padding: 12px 14px;
  text-align: left;
  border-bottom: 1px solid var(--line-paper);
  color: var(--black);
  line-height: 1.6;
}

.page-disclaimer .spec-table tbody tr:nth-child(even) th,
.page-disclaimer .spec-table tbody tr:nth-child(even) td {
  background: rgba(16, 24, 32, 0.04);
}

.page-disclaimer .spec-table tbody tr:last-child th,
.page-disclaimer .spec-table tbody tr:last-child td {
  border-bottom: 0;
}

.page-disclaimer .spec-table tbody td:last-child {
  font-family: var(--font-mono);
  font-size: 0.86rem;
  color: var(--ink-2);
  white-space: nowrap;
}

/* 折叠版本提示 */
.page-disclaimer .version-details {
  margin-top: 12px;
  background: rgba(14, 42, 71, 0.045);
  border: 2px solid var(--line-paper);
}

.page-disclaimer .version-details summary {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.5;
  color: var(--black);
}

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

.page-disclaimer .version-details summary::before {
  content: "+";
  flex: none;
  width: 16px;
  font-family: var(--font-mono);
  font-size: 1.15rem;
  line-height: 1;
  color: var(--orange);
}

.page-disclaimer .version-details[open] summary {
  border-bottom: 2px solid var(--line-paper);
  background: rgba(246, 184, 74, 0.14);
}

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

.page-disclaimer .version-details summary:hover {
  background: rgba(53, 224, 208, 0.14);
}

.page-disclaimer .version-details summary:focus-visible {
  outline: 3px solid var(--orange);
  outline-offset: -3px;
}

.page-disclaimer .version-details__body {
  padding: 14px 16px 16px;
  font-size: 0.94rem;
  line-height: 1.8;
  color: var(--black);
}

.page-disclaimer .version-details__body p {
  margin: 0;
}

/* 栏目卡 */
.page-disclaimer .channel-grid {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-disclaimer .channel {
  padding: 12px 14px;
  background: var(--paper);
  border: 2px solid var(--black);
  box-shadow: var(--shadow-hard-sm);
}

.page-disclaimer .channel strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.25;
  color: var(--ink);
}

.page-disclaimer .channel span {
  display: block;
  font-size: 0.87rem;
  line-height: 1.65;
  color: var(--usage-black-soft);
}

/* 授权对照 */
.page-disclaimer .rights-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 14px;
  margin-top: 18px;
}

.page-disclaimer .rights-card {
  padding: 16px;
  border: 2px solid var(--black);
}

.page-disclaimer .rights-card--ok {
  background: rgba(53, 224, 208, 0.16);
}

.page-disclaimer .rights-card--ask {
  background: rgba(255, 107, 44, 0.14);
}

.page-disclaimer .rights-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.1rem;
  line-height: 1.3;
  color: var(--ink);
}

/* 联系方式块 */
.page-disclaimer .usage-contact {
  margin-top: 18px;
  padding: 18px;
  background: var(--ink);
  color: var(--paper);
  border-left: 4px solid var(--orange);
  box-shadow: var(--shadow-hard-dark);
}

.page-disclaimer .usage-contact__title {
  margin: 0 0 10px;
  font-size: 11px;
  letter-spacing: 0.16em;
  color: var(--amber);
  text-transform: uppercase;
}

.page-disclaimer .usage-contact__line {
  margin: 0 0 6px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--usage-ink-soft);
  overflow-wrap: anywhere;
}

.page-disclaimer .usage-contact__line a {
  color: var(--aurora);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
}

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

.page-disclaimer .usage-contact__note {
  margin: 12px 0 0;
  padding-top: 12px;
  border-top: 1px solid var(--line);
  font-size: 0.84rem;
  line-height: 1.7;
  color: var(--gray);
}

/* 相关入口 */
.page-disclaimer .usage-links {
  margin-top: 18px;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-disclaimer .usage-link {
  display: grid;
  gap: 4px;
  padding: 14px 16px;
  background: var(--paper);
  border: 2px solid var(--black);
  border-left: 6px solid var(--ink);
  text-decoration: none;
  transition: border-left-color 0.2s var(--ease), transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}

.page-disclaimer .usage-link .mono {
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--ink-2);
  text-transform: uppercase;
}

.page-disclaimer .usage-link span:last-child {
  font-size: 0.88rem;
  line-height: 1.65;
  color: var(--usage-black-soft);
}

.page-disclaimer .usage-link:hover,
.page-disclaimer .usage-link:focus-visible {
  border-left-color: var(--orange);
  box-shadow: var(--shadow-hard-sm);
  transform: translate(-1px, -1px);
}

/* ---------- 结尾 CTA ---------- */
.page-disclaimer .usage-cta {
  padding: 34px 0 42px;
  background:
    repeating-linear-gradient(90deg, rgba(250, 247, 239, 0.045) 0 1px, transparent 1px 72px),
    linear-gradient(120deg, var(--ink) 0%, var(--ink-3) 100%);
  border-top: 2px solid var(--line-strong);
  color: var(--paper);
}

.page-disclaimer .usage-cta__inner {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: center;
}

.page-disclaimer .usage-cta__title {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.5rem, 5vw, 2.2rem);
  line-height: 1.15;
  color: var(--paper);
}

.page-disclaimer .usage-cta__lead {
  margin: 0;
  max-width: 36em;
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--usage-ink-soft);
}

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

.page-disclaimer .usage-cta__actions .btn {
  font-size: 0.92rem;
  padding: 12px 22px;
}

/* ---------- 断点 ---------- */
@media (min-width: 560px) {
  .page-disclaimer .channel-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page-disclaimer .usage-links {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 760px) {
  .page-disclaimer .usage-hero {
    padding-top: 32px;
  }

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

  .page-disclaimer .rights-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

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

  .page-disclaimer .usage-body {
    padding: 44px 0 56px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 1fr);
    gap: 40px;
    align-items: end;
  }

  .page-disclaimer .usage-hero__meta {
    align-self: end;
  }

  .page-disclaimer .usage-banner {
    margin-top: 32px;
  }

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

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

@media (min-width: 1000px) {
  .page-disclaimer .usage-grid {
    grid-template-columns: minmax(0, 1fr) 320px;
    gap: 46px;
    align-items: start;
  }

  .page-disclaimer .usage-article {
    grid-column: 1;
    grid-row: 1;
  }

  .page-disclaimer .usage-side {
    grid-column: 2;
    grid-row: 1;
  }

  .page-disclaimer .usage-toc {
    position: sticky;
    top: var(--usage-sticky);
  }

  .page-disclaimer .usage-sec {
    padding-bottom: 32px;
    margin-bottom: 32px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__list a,
  .page-disclaimer .usage-link {
    transition: none;
  }

  .page-disclaimer .usage-link:hover,
  .page-disclaimer .usage-link:focus-visible {
    transform: none;
  }
}
<<<END>>>