.page-disclaimer {
  --u-pad: 20px;
  --u-rule: rgba(18, 26, 36, 0.14);
  --u-note-bg: rgba(127, 169, 155, 0.14);
  --u-card-bg: #FBF7EE;
  background: var(--paper);
  color: var(--ink-black);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.75;
  overflow-x: clip;
}

@media (min-width: 720px) {
  .page-disclaimer { --u-pad: 48px; }
}

@media (min-width: 1080px) {
  .page-disclaimer { --u-pad: 80px; }
}

.page-disclaimer .usage-shell {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-left: var(--u-pad);
  padding-right: var(--u-pad);
}

/* ---------- 首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  background: var(--ink-navy);
  color: var(--paper);
  padding: 24px 0 52px;
  border-bottom: 1px solid var(--gold-dim);
  overflow: hidden;
}

.page-disclaimer .usage-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(154, 163, 173, 0.09) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(154, 163, 173, 0.09) 1px, transparent 1px);
  background-size: 64px 64px;
  pointer-events: none;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  top: -120px;
  right: -80px;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(212, 175, 55, 0.16), transparent 68%);
  pointer-events: none;
}

.page-disclaimer .usage-hero__frame {
  position: absolute;
  inset: 10px;
  border: 1px solid rgba(212, 175, 55, 0.2);
  pointer-events: none;
}

.page-disclaimer .usage-hero__frame::before,
.page-disclaimer .usage-hero__frame::after {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border: 1px solid var(--gold);
}

.page-disclaimer .usage-hero__frame::before {
  top: -1px;
  left: -1px;
  border-right: 0;
  border-bottom: 0;
}

.page-disclaimer .usage-hero__frame::after {
  bottom: -1px;
  right: -1px;
  border-left: 0;
  border-top: 0;
}

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

.page-disclaimer .breadcrumb__list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 12.5px;
  letter-spacing: 0.02em;
}

.page-disclaimer .breadcrumb__link {
  color: var(--stone);
  text-decoration: none;
  border-bottom: 1px solid transparent;
}

.page-disclaimer .breadcrumb__link:hover {
  color: var(--gold-soft);
  border-bottom-color: var(--gold-dim);
}

.page-disclaimer .breadcrumb__sep {
  color: rgba(154, 163, 173, 0.5);
  font-family: var(--font-mono);
}

.page-disclaimer .breadcrumb__item span[aria-current] {
  color: var(--gold-soft);
}

.page-disclaimer .usage-hero .eyebrow {
  margin: 26px 0 12px;
  color: var(--gold-soft);
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.18em;
  text-transform: uppercase;
}

.page-disclaimer .usage-hero h1 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(28px, 7vw, 54px);
  line-height: 1.18;
  letter-spacing: 0.01em;
  color: var(--paper);
}

.page-disclaimer .usage-hero__lead {
  margin: 18px 0 0;
  max-width: 46ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: rgba(244, 239, 228, 0.78);
}

.page-disclaimer .usage-hero__grid {
  display: grid;
  gap: 34px;
}

@media (min-width: 920px) {
  .page-disclaimer .usage-hero {
    padding: 28px 0 68px;
  }
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: 1.12fr 0.88fr;
    gap: 56px;
    align-items: start;
  }
  .page-disclaimer .usage-hero__lead {
    font-size: 16.5px;
  }
}

/* 速览清单 */
.page-disclaimer .quick-list {
  margin: 30px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid rgba(154, 163, 173, 0.24);
  max-width: 52ch;
}

.page-disclaimer .quick-list li {
  display: grid;
  grid-template-columns: 34px 1fr;
  gap: 10px;
  padding: 11px 0;
  border-bottom: 1px solid rgba(154, 163, 173, 0.16);
  font-size: 14.5px;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.84);
}

.page-disclaimer .quick-list__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.12em;
  color: var(--gold-soft);
  padding-top: 4px;
}

/* 对照示意卡 */
.page-disclaimer .compare-demo {
  position: relative;
  background: var(--panel-navy);
  border: 1px solid rgba(212, 175, 55, 0.3);
  padding: 18px 18px 6px;
  clip-path: polygon(0 0, calc(100% - 20px) 0, 100% 20px, 100% 100%, 0 100%);
}

.page-disclaimer .compare-demo__cap {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--stone);
}

.page-disclaimer .compare-demo__row {
  border-top: 1px solid rgba(154, 163, 173, 0.2);
  border-left: 2px solid transparent;
  padding: 14px 0 14px 14px;
}

.page-disclaimer .compare-demo__row:first-of-type {
  border-top: 0;
}

.page-disclaimer .compare-demo__row--new {
  border-left-color: var(--gold);
}

.page-disclaimer .compare-demo__row--legacy {
  border-left-color: var(--celadon);
}

.page-disclaimer .compare-demo__tag {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.16em;
}

.page-disclaimer .compare-demo__row--new .compare-demo__tag {
  color: var(--gold-soft);
}

.page-disclaimer .compare-demo__row--legacy .compare-demo__tag {
  color: var(--celadon);
}

.page-disclaimer .compare-demo__title {
  margin: 6px 0 4px;
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 600;
  color: var(--paper);
}

.page-disclaimer .compare-demo__desc {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: rgba(244, 239, 228, 0.66);
}

/* ---------- 正文骨架 ---------- */
.page-disclaimer .usage-body {
  padding: 40px 0 64px;
}

@media (min-width: 1080px) {
  .page-disclaimer .usage-body {
    padding: 64px 0 96px;
  }
}

.page-disclaimer .usage-layout {
  display: grid;
  gap: 30px;
}

@media (min-width: 960px) {
  .page-disclaimer .usage-layout {
    grid-template-columns: 208px minmax(0, 1fr);
    gap: 64px;
    align-items: start;
  }
}

/* 章节索引 */
.page-disclaimer .index-rail {
  border: 1px solid var(--u-rule);
  background: var(--u-card-bg);
  padding: 14px 14px 16px;
}

.page-disclaimer .index-rail__title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 10.5px;
  letter-spacing: 0.2em;
  color: var(--celadon-deep);
}

.page-disclaimer .index-rail__list {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .index-rail__link {
  display: block;
  padding: 5px 9px;
  font-size: 13.5px;
  color: #45525f;
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 180ms ease, border-color 180ms ease, background-color 180ms ease;
}

.page-disclaimer .index-rail__link:hover {
  color: var(--ink-navy);
  background: rgba(127, 169, 155, 0.12);
}

.page-disclaimer .index-rail__link.is-active {
  color: var(--ink-navy);
  font-weight: 600;
  border-left-color: var(--gold);
  background: rgba(212, 175, 55, 0.1);
}

@media (min-width: 960px) {
  .page-disclaimer .index-rail {
    position: sticky;
    top: 88px;
  }
  .page-disclaimer .index-rail__list {
    display: block;
  }
  .page-disclaimer .index-rail__link {
    padding: 6px 10px;
  }
}

/* ---------- 章节 ---------- */
.page-disclaimer .usage-section {
  padding: 30px 0 10px;
  border-top: 1px solid var(--u-rule);
  scroll-margin-top: 92px;
}

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

.page-disclaimer .usage-section__head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 16px;
}

.page-disclaimer .usage-section__num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  color: var(--terracotta);
}

.page-disclaimer .usage-section h2 {
  margin: 0;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: clamp(21px, 3.4vw, 30px);
  line-height: 1.28;
  letter-spacing: 0.01em;
  color: var(--ink-navy);
}

.page-disclaimer .usage-prose p {
  margin: 0 0 14px;
  max-width: 64ch;
  font-size: 15.5px;
  line-height: 1.85;
  color: #232c36;
}

.page-disclaimer .usage-prose h3 {
  margin: 26px 0 10px;
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 600;
  color: var(--ink-navy);
}

.page-disclaimer .usage-list {
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
  max-width: 66ch;
}

.page-disclaimer .usage-list li {
  position: relative;
  padding: 8px 0 8px 22px;
  font-size: 15px;
  line-height: 1.8;
  color: #232c36;
  border-bottom: 1px solid rgba(18, 26, 36, 0.08);
}

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

.page-disclaimer .usage-list li::before {
  content: "";
  position: absolute;
  left: 2px;
  top: 19px;
  width: 10px;
  height: 2px;
  background: var(--gold);
}

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

.page-disclaimer .usage-mnemonic {
  margin: 20px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--gold);
  background: rgba(212, 175, 55, 0.1);
  font-family: var(--font-head);
  font-size: 16px;
  letter-spacing: 0.02em;
  color: var(--ink-navy);
  max-width: 64ch;
}

/* 提示框 */
.page-disclaimer .usage-note {
  margin: 20px 0 0;
  padding: 13px 18px 14px 18px;
  background: var(--u-note-bg);
  border-left: 3px solid var(--celadon-deep);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 12px), calc(100% - 12px) 100%, 0 100%);
  max-width: 64ch;
}

.page-disclaimer .usage-note p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #2b3946;
}

.page-disclaimer .usage-note--cinnabar {
  background: rgba(200, 64, 47, 0.08);
  border-left-color: var(--cinnabar);
}

/* 图片 */
.page-disclaimer .usage-figure {
  margin: 26px 0 0;
}

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

.page-disclaimer .usage-figure figcaption {
  margin-top: 9px;
  font-size: 13px;
  line-height: 1.7;
  color: #5d6975;
}

/* 移动端六入口 */
.page-disclaimer .entry-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 18px 0 20px;
  background: rgba(18, 26, 36, 0.12);
  border: 1px solid rgba(18, 26, 36, 0.12);
}

.page-disclaimer .entry-grid__item {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 12px 14px;
  background: var(--u-card-bg);
}

.page-disclaimer .entry-grid__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--celadon-deep);
}

.page-disclaimer .entry-grid__name {
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-navy);
}

@media (min-width: 620px) {
  .page-disclaimer .entry-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* 电脑端类目 */
.page-disclaimer .usage-cat {
  display: grid;
  gap: 1px;
  margin: 18px 0 20px;
  padding: 1px;
  list-style: none;
  background: rgba(18, 26, 36, 0.1);
}

.page-disclaimer .usage-cat li {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 14px;
  background: var(--u-card-bg);
  font-size: 14.5px;
  font-weight: 500;
  color: var(--ink-navy);
}

.page-disclaimer .usage-cat__num {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  color: var(--terracotta);
}

@media (min-width: 620px) {
  .page-disclaimer .usage-cat {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* 折叠步骤 */
.page-disclaimer .usage-details {
  margin: 20px 0 0;
  border: 1px solid var(--u-rule);
  background: var(--u-card-bg);
  max-width: 66ch;
}

.page-disclaimer .usage-details__sum {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 12px 16px;
  cursor: pointer;
  list-style: none;
  font-size: 15px;
  font-weight: 600;
  color: var(--ink-navy);
}

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

.page-disclaimer .usage-details__sum::after {
  content: "+";
  font-family: var(--font-mono);
  font-size: 17px;
  color: var(--celadon-deep);
}

.page-disclaimer .usage-details[open] .usage-details__sum {
  border-bottom: 1px solid var(--u-rule);
}

.page-disclaimer .usage-details[open] .usage-details__sum::after {
  content: "−";
}

.page-disclaimer .usage-details__body {
  padding: 14px 16px 16px;
}

.page-disclaimer .usage-steps {
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .usage-steps li {
  display: grid;
  grid-template-columns: 26px 1fr;
  gap: 10px;
  padding: 8px 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: #232c36;
}

.page-disclaimer .usage-steps__num {
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  color: var(--gold);
  padding-top: 4px;
}

/* 路径示例 */
.page-disclaimer .usage-chip-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 16px;
}

.page-disclaimer .path-chip {
  display: inline-block;
  padding: 5px 11px;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.03em;
  color: var(--gold-soft);
  background: var(--ink-navy);
  border-left: 2px solid var(--gold);
}

/* SVG 图解 */
.page-disclaimer .usage-diagram {
  margin: 0 0 18px;
  padding: 16px 12px;
  background: var(--midnight);
  border: 1px solid rgba(212, 175, 55, 0.22);
  overflow: hidden;
}

.page-disclaimer .usage-diagram svg {
  display: block;
  width: 100%;
  height: auto;
}

/* 反馈准备 */
.page-disclaimer .prep-grid {
  display: grid;
  gap: 1px;
  margin: 12px 0 20px;
  background: rgba(18, 26, 36, 0.12);
  border: 1px solid rgba(18, 26, 36, 0.12);
}

.page-disclaimer .prep-grid__item {
  background: var(--u-card-bg);
  padding: 14px 16px 16px;
}

.page-disclaimer .prep-grid__num {
  margin: 0 0 6px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.12em;
  color: var(--terracotta);
}

.page-disclaimer .prep-grid__title {
  margin: 0 0 4px;
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 600;
  color: var(--ink-navy);
}

.page-disclaimer .prep-grid__desc {
  margin: 0;
  font-size: 13.5px;
  line-height: 1.7;
  color: #4a5763;
}

@media (min-width: 680px) {
  .page-disclaimer .prep-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

/* CTA */
.page-disclaimer .usage-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 14px;
  margin: 24px 0 8px;
}

.page-disclaimer .usage-cta .btn {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  padding: 10px 20px;
  font-size: 15px;
  text-decoration: none;
}

.page-disclaimer .usage-link {
  display: inline-block;
  color: var(--celadon-deep);
  text-decoration: none;
  font-size: 14.5px;
  border-bottom: 1px solid rgba(79, 117, 105, 0.4);
  transition: color 160ms ease, border-color 160ms ease;
}

.page-disclaimer .usage-link:hover {
  color: var(--ink-navy);
  border-bottom-color: var(--gold);
}

.page-disclaimer .usage-footnote {
  margin: 18px 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: #4a5763;
  max-width: 64ch;
}

.page-disclaimer .usage-footnote .usage-link {
  margin: 0 2px;
}

/* 动效克制处理 */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .index-rail__link,
  .page-disclaimer .usage-link {
    transition: none;
  }
}
<<<END>>>