.page-disclaimer {
  --u-gap: clamp(16px, 2.4vw, 26px);
  padding-bottom: clamp(56px, 8vw, 100px);
  background: var(--paper);
  color: var(--black);
  font-family: var(--font-body);
}

.page-disclaimer .breadcrumb {
  margin: clamp(16px, 2.4vw, 26px) 0 0;
}

/* ---------- 首屏：图例驱动的入口说明 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  margin-top: clamp(14px, 2vw, 22px);
  padding: clamp(26px, 4.4vw, 56px);
  border-radius: var(--radius-lg);
  background: var(--ink);
  color: #fff;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: -20% -10% -20% 38%;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(118deg, transparent 0 44%, rgba(141, 198, 63, 0.22) 44% 44.6%, transparent 44.6%),
    linear-gradient(118deg, transparent 0 62%, rgba(255, 138, 61, 0.16) 62% 62.5%, transparent 62.5%),
    radial-gradient(circle at 80% 20%, rgba(141, 198, 63, 0.26), transparent 58%);
}

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

.page-disclaimer .u-eyebrow {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--kiwi);
}

.page-disclaimer .usage-hero h1 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(2rem, 5.6vw, 3.5rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  color: #fff;
  text-wrap: balance;
}

.page-disclaimer .usage-lead {
  max-width: 62ch;
  margin: clamp(16px, 2.4vw, 22px) 0 0;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.8;
  color: rgba(255, 255, 255, 0.82);
}

.page-disclaimer .legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin: clamp(20px, 3vw, 30px) 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .legend-item {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 9px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255, 255, 255, 0.24);
  background: rgba(255, 255, 255, 0.08);
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: #fff;
}

.page-disclaimer .legend-swatch {
  flex: none;
  width: 9px;
  height: 9px;
  border-radius: 50%;
}

.page-disclaimer .legend-item--new .legend-swatch {
  background: var(--kiwi);
  box-shadow: 0 0 0 3px rgba(141, 198, 63, 0.22);
}

.page-disclaimer .legend-item--legacy .legend-swatch {
  background: var(--orange);
  box-shadow: 0 0 0 3px rgba(255, 138, 61, 0.24);
}

/* ---------- 布局与粘性目录 ---------- */
.page-disclaimer .usage-layout {
  margin-top: clamp(28px, 4vw, 48px);
}

.page-disclaimer .rail-col,
.page-disclaimer .main-col {
  min-width: 0;
}

.page-disclaimer .usage-toc {
  margin-bottom: 26px;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .toc-title {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
}

.page-disclaimer .usage-toc ol {
  display: flex;
  flex-wrap: nowrap;
  gap: 6px;
  margin: 0;
  padding: 0 0 6px;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-disclaimer .usage-toc a {
  display: flex;
  align-items: baseline;
  gap: 9px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  background: var(--paper);
  color: var(--ink);
  font-size: 14px;
  line-height: 1.4;
  text-decoration: none;
  white-space: nowrap;
  transition: background-color 180ms ease, color 180ms ease;
}

.page-disclaimer .usage-toc a:hover,
.page-disclaimer .usage-toc a:focus-visible {
  background: var(--kiwi-soft);
  color: var(--ink);
  outline: none;
}

.page-disclaimer .usage-toc a:focus-visible {
  outline: 3px solid var(--kiwi);
  outline-offset: 1px;
}

.page-disclaimer .toc-num {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--kiwi-deep);
}

/* ---------- 章节框架 ---------- */
.page-disclaimer .usage-section {
  padding-block: clamp(26px, 3.6vw, 40px);
  border-top: 1px solid var(--line-soft);
  scroll-margin-top: calc(var(--header-h) + 20px);
}

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

.page-disclaimer .u-head {
  display: flex;
  gap: 14px;
  align-items: flex-start;
  margin-bottom: 18px;
}

.page-disclaimer .u-num {
  flex: none;
  font-family: var(--font-mono);
  font-size: clamp(1.6rem, 3.4vw, 2.4rem);
  font-weight: 700;
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--kiwi-deep);
}

.page-disclaimer .u-head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(1.35rem, 2.6vw, 1.9rem);
  letter-spacing: -0.02em;
  color: var(--ink);
  overflow-wrap: break-word;
}

.page-disclaimer .u-sub {
  margin: 8px 0 0;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-disclaimer .usage-section p {
  margin: 0 0 12px;
  font-size: 15.5px;
  line-height: 1.8;
  color: var(--black);
}

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

.page-disclaimer .usage-section a {
  color: var(--kiwi-deep);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .usage-section a:hover {
  color: var(--ink);
}

.page-disclaimer .u-note {
  margin: 16px 0 0;
  padding: 12px 16px;
  border-left: 3px solid var(--kiwi);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--card);
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 01 入口路径 ---------- */
.page-disclaimer .path-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .path-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 14px;
  padding: 16px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .path-num {
  display: grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border-radius: 50%;
  background: var(--kiwi-soft);
  color: var(--kiwi-deep);
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 700;
}

.page-disclaimer .path-item h3 {
  margin: 2px 0 6px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .path-item p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 02 版本标识 ---------- */
.page-disclaimer .version-grid {
  display: grid;
  gap: 12px;
  margin-bottom: 20px;
}

.page-disclaimer .version-card {
  padding: 18px;
  border: 1px solid var(--line);
  border-left: 4px solid var(--kiwi);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .version-card--legacy {
  border-left-color: var(--orange);
}

.page-disclaimer .version-card h3 {
  margin: 10px 0 8px;
  font-family: var(--font-display);
  font-size: 15.5px;
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .version-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

.page-disclaimer .media-frame {
  margin: 4px 0 0;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--mist);
}

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

.page-disclaimer .media-caption {
  padding: 12px 16px;
  border-top: 1px solid var(--line-soft);
  background: var(--card);
  font-size: 13px;
  line-height: 1.7;
  color: var(--slate);
}

/* ---------- 03 收藏回访 ---------- */
.page-disclaimer .step-list {
  display: grid;
  gap: 12px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .step-card {
  padding: 20px 18px 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .step-num {
  display: inline-block;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  background: var(--kiwi-soft);
  color: var(--kiwi-deep);
  font-family: var(--font-mono);
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.1em;
}

.page-disclaimer .step-card h3 {
  margin: 12px 0 8px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .step-card p {
  margin: 0;
  font-size: 14.5px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 04 终端切换 ---------- */
.page-disclaimer .device-tabs {
  margin-top: 4px;
}

.page-disclaimer .tablist {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  background: var(--mist);
}

.page-disclaimer .tab {
  flex: 1 1 auto;
  min-height: 44px;
  padding: 10px 18px;
  border: 0;
  border-radius: var(--radius-pill);
  background: transparent;
  color: var(--ink);
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background-color 180ms ease, color 180ms ease;
}

.page-disclaimer .tab[aria-selected="true"] {
  background: var(--ink);
  color: #fff;
}

.page-disclaimer .tab:focus-visible {
  outline: 3px solid var(--kiwi);
  outline-offset: 2px;
}

.page-disclaimer .tab-panel {
  margin-top: 14px;
  padding: 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .tab-panel p {
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-disclaimer .dot-list {
  display: grid;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .dot-list li {
  position: relative;
  padding-left: 18px;
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--slate);
}

.page-disclaimer .dot-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 9px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--kiwi);
}

/* ---------- 05 旧版面板 ---------- */
.page-disclaimer .legacy-card {
  padding: clamp(18px, 3vw, 26px);
  border: 1px solid var(--line);
  border-left: 4px solid var(--orange);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .legacy-card p {
  margin: 12px 0 0;
  font-size: 14.5px;
  line-height: 1.8;
  color: var(--slate);
}

.page-disclaimer .legacy-ways {
  display: grid;
  gap: 10px;
  margin: 16px 0 0;
  padding: 0;
  list-style: none;
}

.page-disclaimer .legacy-ways li {
  padding: 12px 14px;
  border: 1px dashed rgba(255, 138, 61, 0.5);
  border-radius: var(--radius-sm);
  background: var(--paper);
  font-size: 14px;
  line-height: 1.7;
  color: var(--slate);
}

.page-disclaimer .legacy-ways strong {
  display: block;
  margin-bottom: 4px;
  font-family: var(--font-display);
  font-size: 14.5px;
  font-weight: 700;
  color: var(--orange-deep);
}

/* ---------- 06 反馈 ---------- */
.page-disclaimer .feedback-grid {
  display: grid;
  gap: 12px;
}

.page-disclaimer .feedback-card {
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-md);
  background: var(--card);
}

.page-disclaimer .feedback-card h3 {
  margin: 0 0 10px;
  font-family: var(--font-display);
  font-size: 16px;
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .feedback-card--ink {
  border-color: var(--ink);
  background: var(--ink);
  color: #fff;
}

.page-disclaimer .feedback-card--ink h3 {
  color: #fff;
}

.page-disclaimer .feedback-card--ink p,
.page-disclaimer .feedback-card--ink .dot-list li {
  color: rgba(255, 255, 255, 0.8);
}

.page-disclaimer .feedback-card--ink a {
  color: var(--kiwi);
  text-decoration-color: rgba(141, 198, 63, 0.6);
}

.page-disclaimer .feedback-card--ink a:hover {
  color: #fff;
}

/* ---------- 07 维护节奏 ---------- */
.page-disclaimer .notes-grid {
  display: grid;
  gap: 12px;
}

.page-disclaimer .note-card {
  padding: 18px;
  border: 1px solid var(--line-soft);
  border-radius: var(--radius-md);
  background: var(--mist);
}

.page-disclaimer .note-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--ink);
}

.page-disclaimer .note-card p {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--slate);
}

/* ---------- 断点 ---------- */
@media (min-width: 700px) {
  .page-disclaimer .legacy-ways {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 720px) {
  .page-disclaimer .version-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 760px) {
  .page-disclaimer .step-list,
  .page-disclaimer .notes-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 780px) {
  .page-disclaimer .feedback-grid {
    grid-template-columns: 1fr 1.25fr;
  }
}

@media (min-width: 860px) {
  .page-disclaimer .usage-toc {
    margin-bottom: 0;
    padding: 18px;
  }

  .page-disclaimer .usage-toc ol {
    flex-direction: column;
    flex-wrap: wrap;
    overflow: visible;
    padding-bottom: 0;
    gap: 2px;
  }

  .page-disclaimer .usage-toc a {
    padding: 9px 10px;
    background: transparent;
    white-space: normal;
  }

  .page-disclaimer .rail-sticky {
    position: sticky;
    top: calc(var(--header-h) + 18px);
  }

  .page-disclaimer .tab {
    flex: 0 1 auto;
    min-width: 132px;
  }
}

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