.page-disclaimer {
  --usage-gap-lg: clamp(2.5rem, 6vw, 4.5rem);
  --usage-gap-md: clamp(1.25rem, 3vw, 2rem);
  background: var(--ink);
  color: var(--mist);
  overflow-x: hidden;
}

.page-disclaimer [id] {
  scroll-margin-top: calc(var(--header-offset) + 1rem);
}

.page-disclaimer .usage-topspace {
  padding-top: calc(var(--header-offset) + clamp(1rem, 3vw, 2rem));
  padding-bottom: .25rem;
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  padding-block: clamp(1.25rem, 3.5vw, 2.25rem) clamp(2.5rem, 6vw, 4.5rem);
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  top: -22%;
  right: -20%;
  width: min(40rem, 68vw);
  aspect-ratio: 1;
  background: conic-gradient(from 205deg at 62% 38%, rgba(226, 58, 46, .22), rgba(226, 58, 46, 0) 58%);
  pointer-events: none;
  z-index: 0;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: clamp(1rem, 3vw, 2rem);
  width: clamp(3rem, 9vw, 7rem);
  height: 3px;
  background: linear-gradient(90deg, var(--red), var(--yellow), var(--teal));
  z-index: 0;
}

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

.page-disclaimer .usage-title {
  margin: .6rem 0 0;
  max-width: 22ch;
  font-size: clamp(2rem, 6vw, 4.2rem);
  font-weight: 300;
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--bone);
}

.page-disclaimer .usage-lede {
  max-width: 62ch;
  margin-top: clamp(1rem, 1.6vw, 1.5rem);
  font-size: clamp(.95rem, 1.1vw, 1.05rem);
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .75rem;
  margin-top: clamp(1.5rem, 2.5vw, 2.25rem);
}

/* ---------- 目录 ---------- */
.page-disclaimer .usage-index {
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
  padding-block: clamp(1.5rem, 3vw, 2.25rem);
}

.page-disclaimer .usage-index-list {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: .5rem;
}

.page-disclaimer .usage-index-list a {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .55rem 1rem;
  font-size: .85rem;
  color: var(--mist);
  text-decoration: none;
  background: var(--ink);
  border: 1px solid var(--line);
  border-radius: var(--radius-capsule);
  transition: border-color .2s ease, background-color .2s ease, color .2s ease;
}

.page-disclaimer .usage-index-list a:hover,
.page-disclaimer .usage-index-list a:focus-visible {
  border-color: var(--red);
  background: var(--panel-2);
  color: var(--bone);
}

.page-disclaimer .usage-index-num {
  font-size: .72rem;
  letter-spacing: .06em;
  color: var(--yellow);
}

/* ---------- 区块骨架 ---------- */
.page-disclaimer .usage-block {
  padding-block: var(--usage-gap-lg);
}

.page-disclaimer .usage-block--panel {
  background: var(--panel);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-block-head {
  max-width: 68ch;
  margin-bottom: clamp(1.5rem, 3vw, 2.5rem);
}

.page-disclaimer .usage-block-head .eyebrow {
  color: var(--yellow);
  letter-spacing: .12em;
}

.page-disclaimer .usage-block-head h2 {
  margin: .55rem 0 0;
  font-size: clamp(1.45rem, 3.4vw, 2.35rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -.01em;
  color: var(--bone);
}

.page-disclaimer .usage-block-head p {
  margin-top: .9rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 查看路径 ---------- */
.page-disclaimer .usage-figure {
  margin: 0 0 clamp(1.5rem, 3vw, 2.25rem);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-hard);
  background: var(--panel-2);
}

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

.page-disclaimer .usage-steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: clamp(.9rem, 2.2vw, 1.35rem);
}

.page-disclaimer .usage-step-card {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: clamp(.9rem, 2.5vw, 1.75rem);
  padding: clamp(1.1rem, 2.4vw, 1.75rem);
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 4px solid var(--red);
  transition: border-left-color .25s ease, background-color .25s ease;
}

.page-disclaimer .usage-step-card:hover {
  border-left-color: var(--yellow);
  background: var(--panel-2);
}

.page-disclaimer .usage-step-num {
  font-family: var(--font-mono);
  font-size: clamp(1.7rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: .95;
  letter-spacing: -.04em;
  color: var(--red);
}

.page-disclaimer .usage-step-body h3 {
  margin: 0;
  font-size: clamp(1.02rem, 1.6vw, 1.22rem);
  font-weight: 700;
  line-height: 1.3;
  color: var(--bone);
}

.page-disclaimer .usage-step-body p {
  margin: .6rem 0 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-more {
  margin-top: .85rem;
  padding-top: .7rem;
  border-top: 1px dashed var(--line);
}

.page-disclaimer .usage-more summary {
  list-style: none;
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: .72rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--yellow);
}

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

.page-disclaimer .usage-more summary::before {
  content: "+";
  display: inline-block;
  width: 1.15rem;
  height: 1.15rem;
  line-height: 1.05rem;
  text-align: center;
  font-size: .85rem;
  color: var(--yellow);
  border: 1px solid var(--yellow);
}

.page-disclaimer .usage-more[open] summary::before {
  content: "−";
  background: var(--yellow);
  color: var(--ink);
}

.page-disclaimer .usage-more p {
  margin: .8rem 0 0;
  padding-left: .9rem;
  border-left: 2px solid var(--line);
  font-size: .9rem;
  line-height: 1.7;
  color: var(--mist);
}

/* ---------- 更新时间轴 ---------- */
.page-disclaimer .usage-timeline {
  list-style: none;
  margin: 0 0 clamp(1.75rem, 3.5vw, 2.75rem);
  padding: 0;
  display: grid;
  gap: 1.15rem;
}

.page-disclaimer .usage-timeline-item {
  position: relative;
  padding: 1.4rem 0 0 1.4rem;
  border-left: 2px solid var(--line);
}

.page-disclaimer .usage-timeline-item::before {
  content: "";
  position: absolute;
  left: -7px;
  top: 0;
  width: 12px;
  height: 12px;
  background: var(--yellow);
  border: 2px solid var(--ink);
}

.page-disclaimer .usage-timeline-time {
  display: inline-block;
  font-size: .74rem;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--teal);
}

.page-disclaimer .usage-timeline-item h3 {
  margin: .45rem 0 0;
  font-size: 1.02rem;
  font-weight: 700;
  color: var(--bone);
  line-height: 1.35;
}

.page-disclaimer .usage-timeline-item p {
  margin: .5rem 0 0;
  font-size: .9rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-disclaimer .usage-beta-tag {
  display: inline-block;
  margin-top: .7rem;
  padding: .18rem .55rem;
  font-family: var(--font-mono);
  font-size: .66rem;
  letter-spacing: .12em;
  color: var(--ink);
  border: 1px solid var(--yellow);
  background-color: var(--yellow);
  background-image: repeating-linear-gradient(-45deg, rgba(0, 0, 0, .14) 0 4px, transparent 4px 8px);
}

.page-disclaimer .usage-note {
  padding: clamp(1.1rem, 2.5vw, 1.6rem);
  background: var(--ink);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
}

.page-disclaimer .usage-note h3 {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: var(--bone);
}

.page-disclaimer .usage-note p {
  margin: .65rem 0 0;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- 移动端 ---------- */
.page-disclaimer .usage-stat-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin-bottom: clamp(1.5rem, 3vw, 2rem);
  background: var(--line);
  border: 1px solid var(--line);
}

.page-disclaimer .usage-stat {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding: clamp(1rem, 2vw, 1.4rem);
  background: var(--panel);
}

.page-disclaimer .usage-stat-num {
  font-family: var(--font-mono);
  font-size: clamp(1.35rem, 3vw, 1.95rem);
  font-weight: 700;
  line-height: 1;
  color: var(--teal);
}

.page-disclaimer .usage-stat-label {
  font-size: .78rem;
  line-height: 1.45;
  color: var(--dim);
}

.page-disclaimer .usage-tips {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-disclaimer .usage-tips li {
  padding: 1rem 1.1rem;
  font-size: .92rem;
  line-height: 1.7;
  color: var(--mist);
  background: var(--panel-2);
  border: 1px solid var(--line);
}

.page-disclaimer .usage-tips strong {
  display: block;
  margin-bottom: .35rem;
  font-size: .95rem;
  color: var(--bone);
}

/* ---------- 引用规则 ---------- */
.page-disclaimer .usage-cite-rules {
  list-style: none;
  margin: 0 0 clamp(1.5rem, 3vw, 2rem);
  padding: 0;
  display: grid;
  gap: 1rem;
}

.page-disclaimer .usage-cite-rules li {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-cite-rules li:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-disclaimer .usage-rule-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.2rem;
  height: 2.2rem;
  font-size: .75rem;
  letter-spacing: .04em;
  color: var(--ink);
  background: var(--blue);
}

.page-disclaimer .usage-cite-rules h3 {
  margin: 0;
  font-size: .98rem;
  font-weight: 700;
  color: var(--bone);
}

.page-disclaimer .usage-cite-rules p {
  margin: .4rem 0 0;
  font-size: .91rem;
  line-height: 1.7;
  color: var(--mist);
}

.page-disclaimer .usage-cite-form {
  overflow-x: auto;
  padding: 1.15rem 1.25rem;
  background: var(--ink);
  border: 1px solid var(--line);
  border-left: 4px solid var(--teal);
}

.page-disclaimer .usage-cite-form pre {
  margin: 0;
}

.page-disclaimer .usage-cite-form code {
  font-family: var(--font-mono);
  font-size: .82rem;
  line-height: 1.9;
  color: var(--bone);
  white-space: pre;
}

/* ---------- 反馈 ---------- */
.page-disclaimer .usage-feedback-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
}

.page-disclaimer .usage-feedback-main p {
  margin: 0;
  font-size: .94rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-email {
  margin-top: 1.1rem;
}

.page-disclaimer .usage-feedback-note {
  margin-top: 1rem;
  padding-top: .9rem;
  border-top: 1px dashed var(--line);
  font-size: .86rem;
  line-height: 1.7;
  color: var(--dim);
}

.page-disclaimer .usage-feedback-links {
  display: grid;
  gap: .75rem;
}

.page-disclaimer .usage-link-card {
  display: block;
  padding: 1rem 1.1rem;
  text-decoration: none;
  background: var(--panel);
  border: 1px solid var(--line);
  border-left: 3px solid var(--red);
  transition: border-left-color .2s ease, background-color .2s ease;
}

.page-disclaimer .usage-link-card:hover,
.page-disclaimer .usage-link-card:focus-visible {
  border-left-color: var(--yellow);
  background: var(--panel-2);
}

.page-disclaimer .usage-link-card-title {
  display: block;
  font-size: .95rem;
  font-weight: 700;
  color: var(--bone);
}

.page-disclaimer .usage-link-card-desc {
  display: block;
  margin-top: .35rem;
  font-size: .82rem;
  line-height: 1.6;
  color: var(--dim);
}

/* ---------- 责任范围 ---------- */
.page-disclaimer .usage-scope {
  padding: clamp(1.25rem, 3vw, 2.25rem);
  background: var(--ink);
  border: 4px solid var(--red);
  box-shadow: var(--shadow-hard-lg);
}

.page-disclaimer .usage-scope-head {
  margin-bottom: clamp(1.25rem, 2.5vw, 1.75rem);
}

.page-disclaimer .usage-scope-head .eyebrow {
  color: var(--red);
  letter-spacing: .12em;
}

.page-disclaimer .usage-scope-head h2 {
  margin: .5rem 0 0;
  font-size: clamp(1.3rem, 2.8vw, 1.85rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--bone);
}

.page-disclaimer .usage-scope-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: .9rem;
  counter-reset: usage-scope;
}

.page-disclaimer .usage-scope-list li {
  position: relative;
  padding-left: 2.4rem;
  font-size: .92rem;
  line-height: 1.75;
  color: var(--mist);
}

.page-disclaimer .usage-scope-list li::before {
  counter-increment: usage-scope;
  content: counter(usage-scope, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: .12rem;
  padding: 0 .32rem;
  font-family: var(--font-mono);
  font-size: .72rem;
  line-height: 1.35;
  color: var(--red);
  border: 1px solid var(--red);
}

.page-disclaimer .usage-scope-foot {
  margin: clamp(1.25rem, 2.5vw, 1.75rem) 0 0;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: .85rem;
  line-height: 1.7;
  color: var(--dim);
}

.page-disclaimer .usage-scope-foot a {
  color: var(--blue);
  text-decoration: none;
  border-bottom: 1px solid rgba(76, 141, 255, .4);
}

.page-disclaimer .usage-scope-foot a:hover,
.page-disclaimer .usage-scope-foot a:focus-visible {
  color: var(--bone);
  border-bottom-color: var(--bone);
}

/* ---------- 响应式 ---------- */
@media (min-width: 720px) {
  .page-disclaimer .usage-stat-row {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }

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

@media (min-width: 900px) {
  .page-disclaimer .usage-timeline {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 0;
    align-items: start;
  }

  .page-disclaimer .usage-timeline-item {
    border-left: 0;
    border-top: 2px solid var(--line);
    padding: 1.5rem 1.25rem 0 0;
  }

  .page-disclaimer .usage-timeline-item::before {
    left: 0;
    top: -7px;
  }
}

@media (min-width: 960px) {
  .page-disclaimer .usage-feedback-grid {
    grid-template-columns: minmax(0, 1.25fr) minmax(0, 1fr);
    align-items: start;
  }

  .page-disclaimer .usage-cite-rules {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.25rem 2rem;
  }

  .page-disclaimer .usage-cite-rules li {
    border-bottom: 0;
    padding-bottom: 0;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-index-list a,
  .page-disclaimer .usage-step-card,
  .page-disclaimer .usage-link-card {
    transition: none;
  }
}
<<<END>>>