.page-disclaimer {
  background: var(--porcelain);
  color: var(--ink);
}

.page-disclaimer [id] {
  scroll-margin-top: calc(var(--bar-h) + var(--rail-h) + 20px);
}

.page-disclaimer .breadcrumb {
  padding-top: 18px;
  padding-bottom: 6px;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  background:
    linear-gradient(180deg, rgba(246, 243, 234, 0) 0%, rgba(237, 230, 212, 0.85) 100%),
    repeating-linear-gradient(90deg, rgba(107, 103, 93, 0.09) 0 1px, transparent 1px 64px);
  border-bottom: 1px solid rgba(107, 103, 93, 0.3);
  padding: clamp(20px, 4vw, 36px) 0 clamp(26px, 4vw, 44px);
}

.page-disclaimer .usage-hero__inner {
  display: grid;
  gap: clamp(20px, 3vw, 36px);
  min-width: 0;
}

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

.page-disclaimer .eyebrow {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--stone);
  margin: 0 0 14px;
}

.page-disclaimer h1 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(28px, 5.2vw, 52px);
  line-height: 1.16;
  letter-spacing: 0.02em;
  margin: 0 0 clamp(14px, 2vw, 22px);
  max-width: 22ch;
  color: var(--green);
}

.page-disclaimer .usage-hero__text {
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.85;
  color: var(--stone);
  max-width: 62ch;
  margin: 0;
}

.page-disclaimer .usage-hero__meta {
  border-top: 1px solid var(--gold);
  padding-top: 14px;
  min-width: 0;
}

.page-disclaimer .usage-hero__row {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(107, 103, 93, 0.22);
}

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

.page-disclaimer .usage-hero__k {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--clay);
  flex: 0 0 auto;
  min-width: 76px;
}

.page-disclaimer .usage-hero__v {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.6;
  color: var(--ink);
  flex: 1 1 140px;
  min-width: 0;
}

/* ---------- 章节索引 ---------- */
.page-disclaimer .usage-toc {
  display: flex;
  flex-wrap: wrap;
  gap: 6px 0;
  border-bottom: 1px solid rgba(107, 103, 93, 0.28);
  padding: 4px 0 0;
}

.page-disclaimer .usage-toc__link {
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 10px 16px 10px 0;
  margin-right: 16px;
  text-decoration: none;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--stone);
  border-bottom: 2px solid transparent;
  transition: color 200ms var(--ease), border-color 200ms var(--ease);
}

.page-disclaimer .usage-toc__num {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--clay);
}

.page-disclaimer .usage-toc__link:hover,
.page-disclaimer .usage-toc__link:focus-visible,
.page-disclaimer .usage-toc__link.is-active {
  color: var(--green);
  border-bottom-color: var(--gold);
}

.page-disclaimer .usage-toc__link.is-active .usage-toc__num {
  color: var(--gold);
}

/* ---------- 主体两栏 ---------- */
.page-disclaimer .usage-body {
  display: grid;
  gap: 4px;
  padding-top: clamp(6px, 2vw, 14px);
  padding-bottom: clamp(36px, 6vw, 64px);
}

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

.page-disclaimer .usage-sec {
  padding: clamp(24px, 4vw, 38px) 0;
  border-bottom: 1px solid rgba(107, 103, 93, 0.22);
}

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

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

.page-disclaimer .usage-sec__num {
  font-family: var(--mono);
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--gold);
  flex: 0 0 auto;
}

.page-disclaimer .usage-sec h2 {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(20px, 3vw, 28px);
  line-height: 1.35;
  letter-spacing: 0.02em;
  color: var(--green);
  margin: 0;
}

.page-disclaimer .usage-sec__body {
  max-width: 66ch;
  min-width: 0;
}

.page-disclaimer .usage-sec__body p {
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.85;
  color: #2b2922;
  margin: 0 0 14px;
}

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

.page-disclaimer .usage-sec__body a {
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

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

/* 苔绿反白节点，制造节奏变化 */
.page-disclaimer .usage-sec--moss {
  background: var(--green);
  margin: clamp(20px, 3vw, 32px) calc(-1 * clamp(16px, 4vw, 32px));
  padding: clamp(24px, 4vw, 36px) clamp(16px, 4vw, 32px);
}

.page-disclaimer .usage-sec--moss h2 {
  color: var(--porcelain);
}

.page-disclaimer .usage-sec--moss .usage-sec__num {
  color: var(--gold-light);
}

.page-disclaimer .usage-sec--moss .usage-sec__body p {
  color: rgba(246, 243, 234, 0.88);
}

.page-disclaimer .usage-sec--moss .usage-sec__body a {
  color: var(--gold-light);
  border-bottom-color: rgba(230, 210, 166, 0.6);
}

.page-disclaimer .usage-sec--moss .usage-sec__body a:hover,
.page-disclaimer .usage-sec--moss .usage-sec__body a:focus-visible {
  color: #fff;
  border-bottom-color: var(--gold-light);
}

/* ---------- 清单 ---------- */
.page-disclaimer .usage-list {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid rgba(107, 103, 93, 0.28);
}

.page-disclaimer .usage-list li {
  position: relative;
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--stone);
  padding: 11px 0 11px 20px;
  border-bottom: 1px solid rgba(107, 103, 93, 0.18);
}

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 20px;
  width: 7px;
  height: 7px;
  background: var(--gold);
}

.page-disclaimer .usage-list strong {
  color: var(--ink);
  font-weight: 600;
}

/* ---------- 引用格式块 ---------- */
.page-disclaimer .usage-code {
  font-family: var(--mono);
  font-size: 13px;
  line-height: 2;
  color: var(--green);
  background: var(--porcelain-deep);
  border-left: 2px solid var(--gold);
  padding: 16px 18px;
  margin: 18px 0 8px;
  white-space: pre-wrap;
  overflow-wrap: break-word;
  word-break: break-word;
  max-width: 100%;
}

.page-disclaimer .usage-hint {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.7;
  color: var(--stone);
  margin: 0 0 18px;
}

/* ---------- 折叠示例 ---------- */
.page-disclaimer .usage-more {
  border: 1px solid rgba(107, 103, 93, 0.32);
  margin: 0 0 26px;
  background: transparent;
}

.page-disclaimer .usage-more > summary {
  list-style: none;
  cursor: pointer;
  padding: 13px 16px;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--green);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

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

.page-disclaimer .usage-more > summary::after {
  content: "+";
  font-family: var(--mono);
  font-size: 16px;
  color: var(--gold);
  line-height: 1;
}

.page-disclaimer .usage-more[open] > summary::after {
  content: "−";
}

.page-disclaimer .usage-more > summary:hover,
.page-disclaimer .usage-more > summary:focus-visible {
  background: rgba(230, 210, 166, 0.28);
}

.page-disclaimer .usage-more__inner {
  padding: 4px 16px 16px;
  border-top: 1px solid rgba(107, 103, 93, 0.24);
}

.page-disclaimer .usage-more__inner p {
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.8;
  color: var(--stone);
  margin: 12px 0 0;
}

.page-disclaimer .usage-more__k {
  display: inline-block;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--clay);
  margin-right: 10px;
}

/* ---------- 配图 ---------- */
.page-disclaimer .usage-figure {
  margin: 0;
}

.page-disclaimer .usage-figure .media-frame {
  border: 1px solid rgba(107, 103, 93, 0.32);
  padding: 8px;
  background: var(--porcelain-deep);
}

.page-disclaimer .usage-figure .media {
  max-width: 100%;
}

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

.page-disclaimer .usage-figure__cap {
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--stone);
  margin-top: 10px;
  padding-left: 10px;
  border-left: 1px solid var(--gold);
}

/* ---------- 旁注栏 ---------- */
.page-disclaimer .usage-note {
  display: grid;
  gap: 14px;
  min-width: 0;
  margin-top: 8px;
}

.page-disclaimer .usage-note__card {
  background: rgba(230, 210, 166, 0.4);
  border: 1px solid var(--gold-light);
  padding: 16px 18px;
  min-width: 0;
}

.page-disclaimer .usage-note__card--plain {
  background: transparent;
  border-color: rgba(107, 103, 93, 0.3);
}

.page-disclaimer .usage-note__title {
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--clay);
  margin: 0 0 8px;
}

.page-disclaimer .usage-note__text {
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.8;
  color: #2b2922;
  margin: 0;
}

.page-disclaimer .usage-note__mail {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--green);
  margin: 10px 0 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

.page-disclaimer .usage-note__link {
  display: inline-block;
  margin-top: 10px;
  font-family: var(--sans);
  font-size: 13.5px;
  color: var(--green);
  text-decoration: none;
  border-bottom: 1px solid var(--gold);
}

.page-disclaimer .usage-note__link:hover,
.page-disclaimer .usage-note__link:focus-visible {
  border-bottom-color: var(--green);
}

/* ---------- 页尾入口条 ---------- */
.page-disclaimer .usage-actions {
  background: var(--green);
  color: var(--porcelain);
  padding: clamp(28px, 5vw, 48px) 0;
  border-top: 3px solid var(--gold);
}

.page-disclaimer .usage-actions__title {
  font-family: var(--serif);
  font-weight: 600;
  font-size: clamp(18px, 2.6vw, 24px);
  line-height: 1.4;
  letter-spacing: 0.02em;
  color: var(--porcelain);
  margin: 0 0 clamp(16px, 3vw, 26px);
}

.page-disclaimer .usage-actions__grid {
  display: grid;
  gap: 0;
  border-top: 1px solid rgba(201, 164, 92, 0.45);
}

.page-disclaimer .usage-actions__item {
  display: grid;
  grid-template-columns: 26px minmax(0, 1fr);
  gap: 2px 12px;
  padding: 16px 0;
  border-bottom: 1px solid rgba(201, 164, 92, 0.28);
  text-decoration: none;
  transition: background 200ms var(--ease);
}

.page-disclaimer .usage-actions__num {
  grid-row: span 2;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--gold);
  padding-top: 3px;
}

.page-disclaimer .usage-actions__label {
  font-family: var(--sans);
  font-size: 15.5px;
  font-weight: 500;
  color: var(--porcelain);
}

.page-disclaimer .usage-actions__desc {
  font-family: var(--sans);
  font-size: 13px;
  line-height: 1.65;
  color: rgba(246, 243, 234, 0.68);
}

.page-disclaimer .usage-actions__item:hover .usage-actions__label,
.page-disclaimer .usage-actions__item:focus-visible .usage-actions__label {
  color: var(--gold-light);
}

.page-disclaimer .usage-actions__item:hover .usage-actions__num,
.page-disclaimer .usage-actions__item:focus-visible .usage-actions__num {
  color: var(--gold-light);
}

/* ---------- 断点 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .usage-actions__grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .page-disclaimer .usage-actions__item {
    border-bottom: 0;
    border-right: 1px solid rgba(201, 164, 92, 0.28);
    padding: 18px 20px 18px 0;
  }

  .page-disclaimer .usage-actions__item:last-child {
    border-right: 0;
    padding-right: 0;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .usage-hero__inner {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
    gap: clamp(32px, 5vw, 72px);
  }

  .page-disclaimer .usage-hero__meta {
    border-top: 0;
    border-left: 1px solid var(--gold);
    padding-top: 0;
    padding-left: 22px;
  }

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

@media (min-width: 1000px) {
  .page-disclaimer .usage-body {
    grid-template-columns: minmax(0, 1fr) 262px;
    gap: clamp(32px, 4vw, 64px);
  }

  .page-disclaimer .usage-note {
    position: sticky;
    top: calc(var(--bar-h) + var(--rail-h) + 24px);
    align-self: start;
    margin-top: clamp(24px, 4vw, 38px);
  }
}

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