.page-disclaimer {
  --u-accent: var(--spring);
  color: var(--ink);
}

/* 版本标签带 */
.page-disclaimer .usage-strip {
  background: var(--paper-2);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-strip-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 8px 18px;
  padding-block: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-strip-inner p {
  margin: 0;
}

.page-disclaimer .usage-strip-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--ink);
}

.page-disclaimer .usage-strip-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--autumn);
}

.page-disclaimer .usage-strip-links {
  display: flex;
  gap: 14px;
}

.page-disclaimer .usage-strip-links a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 1px;
}

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

/* 首屏 */
.page-disclaimer .usage-hero {
  display: grid;
  gap: 20px;
  padding-block: 24px 18px;
}

.page-disclaimer .usage-hero h1 {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(32px, 6.4vw, 56px);
  line-height: 1.12;
  letter-spacing: 0.01em;
  margin: 10px 0 16px;
}

.page-disclaimer .usage-lede {
  margin: 0;
  max-width: 46ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--ink-soft);
}

.page-disclaimer .usage-side-label {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
}

/* 折页氛围图 */
.page-disclaimer .usage-figure {
  position: relative;
  margin-top: 6px;
  margin-bottom: 26px;
}

.page-disclaimer .usage-figure img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--line);
  object-fit: cover;
}

.page-disclaimer .usage-figure::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background-image:
    linear-gradient(to right, var(--line) 1px, transparent 1px),
    linear-gradient(to bottom, var(--line) 1px, transparent 1px);
  background-size: 56px 56px;
  opacity: 0.55;
  pointer-events: none;
}

.page-disclaimer .usage-figure::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: var(--radius-lg);
  background: linear-gradient(112deg, transparent 0 57%, rgba(255, 255, 255, 0.38) 57% 59%, transparent 59% 100%);
  pointer-events: none;
}

.page-disclaimer .usage-figure .media-caption {
  margin-top: 10px;
}

/* 主体：目录 + 折页 */
.page-disclaimer .usage-body {
  display: grid;
  gap: calc(var(--gap) * 1.4);
  padding-bottom: 48px;
}

.page-disclaimer .usage-toc {
  display: flex;
  gap: 8px;
  overflow-x: auto;
  padding-bottom: 6px;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .usage-toc a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  flex: 0 0 auto;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: var(--pill);
  color: var(--ink);
  font-size: 13px;
  text-decoration: none;
  white-space: nowrap;
}

.page-disclaimer .usage-toc a:hover,
.page-disclaimer .usage-toc a:focus-visible {
  border-color: var(--autumn);
}

.page-disclaimer .usage-toc-num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--autumn);
}

.page-disclaimer .usage-sheets {
  display: grid;
}

.page-disclaimer .usage-section {
  display: grid;
  grid-template-columns: 34px minmax(0, 1fr);
  gap: 10px;
  padding-block: 26px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-section:first-child {
  border-top: 0;
  padding-top: 4px;
}

.page-disclaimer .usage-section[data-season="spring"] { --u-accent: var(--spring); }
.page-disclaimer .usage-section[data-season="summer"] { --u-accent: var(--summer); }
.page-disclaimer .usage-section[data-season="autumn"] { --u-accent: var(--autumn); }
.page-disclaimer .usage-section[data-season="winter"] { --u-accent: var(--winter); }

.page-disclaimer .usage-num {
  margin: 0;
  padding-top: 5px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-h2 {
  position: relative;
  margin: 0 0 14px;
  padding-bottom: 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: clamp(22px, 3.6vw, 30px);
  line-height: 1.3;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -1px;
  width: 42px;
  height: 2px;
  background: var(--u-accent);
}

.page-disclaimer .usage-sub {
  margin: 0 0 16px;
  font-size: 15px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-disclaimer .usage-grid-2 {
  display: grid;
  gap: 16px;
}

.page-disclaimer .usage-rules {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 11px;
}

.page-disclaimer .usage-rules li {
  position: relative;
  padding-left: 18px;
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
}

.page-disclaimer .usage-rules li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.82em;
  width: 8px;
  height: 2px;
  background: var(--u-accent);
}

.page-disclaimer .usage-note {
  padding: 16px 18px;
  background: var(--paper-2);
  border-radius: var(--radius);
  border-top: 3px solid var(--u-accent);
}

.page-disclaimer .usage-note-label {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-note p:not(.usage-note-label) {
  margin: 0 0 8px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--ink-soft);
}

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

.page-disclaimer .usage-note a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--u-accent);
  text-decoration-thickness: 2px;
  text-underline-offset: 3px;
}

.page-disclaimer .usage-jump {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  margin: 16px 0 0;
  font-size: 14px;
}

.page-disclaimer .usage-jump a {
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px solid var(--line-strong);
  padding-bottom: 2px;
}

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

/* 版本对照表 */
.page-disclaimer .usage-table-wrap {
  margin-bottom: 16px;
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.28);
}

.page-disclaimer .usage-table {
  width: 100%;
  min-width: 540px;
  border-collapse: collapse;
  font-size: 14px;
}

.page-disclaimer .usage-table-caption {
  padding: 12px 14px 0;
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--ink-soft);
}

.page-disclaimer .usage-table th,
.page-disclaimer .usage-table td {
  padding: 11px 14px;
  text-align: left;
  vertical-align: top;
  border-bottom: 1px solid var(--line);
  line-height: 1.65;
}

.page-disclaimer .usage-table thead th {
  background: var(--paper-2);
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--ink);
}

.page-disclaimer .usage-table tbody th {
  font-weight: 500;
  color: var(--ink);
  white-space: nowrap;
}

.page-disclaimer .usage-table td {
  color: var(--ink-soft);
}

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

/* 折叠条目 */
.page-disclaimer .usage-h3 {
  margin: 26px 0 12px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 20px;
  line-height: 1.35;
}

.page-disclaimer .usage-panels {
  display: grid;
  gap: 10px;
}

.page-disclaimer .usage-panel {
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.3);
  overflow: hidden;
}

.page-disclaimer .usage-panel summary {
  cursor: pointer;
  padding: 13px 16px;
  font-size: 15px;
  font-weight: 500;
  color: var(--ink);
}

.page-disclaimer .usage-panel summary:hover {
  color: var(--autumn);
}

.page-disclaimer .usage-panel[open] summary {
  border-bottom: 1px solid var(--line);
  background: var(--paper-2);
}

.page-disclaimer .usage-panel .panel-body {
  padding: 12px 16px 15px;
}

.page-disclaimer .usage-panel .panel-body p {
  margin: 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--ink-soft);
}

/* 行动区 */
.page-disclaimer .usage-cta {
  display: grid;
  gap: 16px;
  margin-top: 28px;
  padding: 24px 20px;
  background: var(--paper-2);
  border: 1px solid var(--line);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-soft);
}

.page-disclaimer .usage-cta-title {
  margin: 0 0 6px;
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 22px;
  line-height: 1.35;
}

.page-disclaimer .usage-cta p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--ink-soft);
}

.page-disclaimer .usage-cta-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px 16px;
}

.page-disclaimer a:focus-visible,
.page-disclaimer summary:focus-visible {
  outline: 2px solid var(--summer);
  outline-offset: 3px;
}

@media (min-width: 760px) {
  .page-disclaimer .usage-hero {
    grid-template-columns: 7fr 5fr;
    align-items: end;
    gap: 32px;
    padding-block: 34px 24px;
  }

  .page-disclaimer .usage-lede {
    font-size: 17px;
  }

  .page-disclaimer .usage-grid-2 {
    grid-template-columns: 1.5fr 1fr;
    gap: 22px;
  }

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

  .page-disclaimer .usage-cta {
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    padding: 28px 30px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-body {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: calc(var(--gap) * 2);
    align-items: start;
    padding-bottom: 64px;
  }

  .page-disclaimer .usage-toc {
    display: block;
    position: sticky;
    top: calc(var(--header-offset) + 20px);
    overflow: visible;
    padding: 0 0 0 14px;
    border-left: 1px solid var(--line);
  }

  .page-disclaimer .usage-toc a {
    display: flex;
    border: 0;
    border-radius: 0;
    padding: 7px 0;
    font-size: 14px;
    white-space: normal;
  }

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

  .page-disclaimer .usage-section {
    grid-template-columns: 56px minmax(0, 1fr);
    gap: 18px;
    padding-block: 34px;
  }

  .page-disclaimer .usage-num {
    font-size: 12px;
    padding-top: 8px;
  }
}

@media print {
  .page-disclaimer .usage-strip-links,
  .page-disclaimer .usage-toc,
  .page-disclaimer .usage-cta-actions {
    display: none;
  }

  .page-disclaimer .usage-section {
    break-inside: avoid;
  }

  .page-disclaimer .usage-figure::before,
  .page-disclaimer .usage-figure::after {
    display: none;
  }
}
<<<END>>>