.page-disclaimer {
  --usage-rail: 200px;
  --usage-flow: 40em;
  display: block;
}

.page-disclaimer .usage-shell {
  padding-block: clamp(20px, 3vw, 40px) clamp(48px, 7vw, 88px);
}

/* ---------- 框景首屏 ---------- */
.page-disclaimer .usage-hero {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: var(--radius-hard);
  background: var(--ink);
}

.page-disclaimer .usage-hero__media {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.page-disclaimer .usage-hero__media img {
  display: block;
  width: 100%;
  height: 100%;
  max-width: 100%;
  object-fit: cover;
  opacity: 0.42;
}

.page-disclaimer .usage-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(11, 31, 26, 0.5) 0%, rgba(11, 31, 26, 0.86) 58%, rgba(11, 31, 26, 0.97) 100%);
}

.page-disclaimer .usage-hero__inner {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 12px;
  justify-content: flex-end;
  min-height: clamp(300px, 46vw, 430px);
  padding: clamp(20px, 3.4vw, 42px) clamp(18px, 4vw, 48px);
}

.page-disclaimer .usage-hero__inner .hth-breadcrumb {
  margin-bottom: auto;
}

.page-disclaimer .usage-hero .hth-breadcrumb__link {
  color: var(--muted);
}

.page-disclaimer .usage-hero .hth-breadcrumb__link:hover,
.page-disclaimer .usage-hero .hth-breadcrumb__link:focus-visible {
  color: var(--cyan);
}

.page-disclaimer .usage-hero__kicker {
  margin: 0;
  color: var(--amber);
}

.page-disclaimer .usage-hero__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.9rem, 4.6vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: 0.01em;
  color: var(--text);
  max-width: 24ch;
}

.page-disclaimer .usage-hero__lead {
  margin: 0;
  max-width: 44ch;
  color: var(--text);
  font-size: clamp(0.95rem, 1.4vw, 1.05rem);
  line-height: 1.78;
  opacity: 0.86;
}

/* ---------- 条款索引 ---------- */
.page-disclaimer .usage-toc {
  margin-top: clamp(18px, 3vw, 32px);
  padding: 16px clamp(14px, 2.4vw, 24px) 18px;
  border: 1px solid var(--line);
  border-radius: var(--radius-hard);
  background: var(--navy);
}

.page-disclaimer .usage-toc__label {
  margin: 0 0 12px;
  color: var(--muted);
}

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

.page-disclaimer .usage-toc__item {
  flex: 1 1 210px;
  min-width: 0;
  display: flex;
}

.page-disclaimer .usage-toc__link {
  display: flex;
  align-items: baseline;
  gap: 8px;
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: var(--radius-hard);
  background: var(--ink);
  color: var(--muted);
  text-decoration: none;
  font-family: var(--font-body);
  font-size: 0.86rem;
  line-height: 1.4;
  transition:
    color var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease),
    background-color var(--dur-base) var(--ease);
}

.page-disclaimer .usage-toc__link .hth-num {
  color: var(--cyan);
  font-weight: 700;
}

.page-disclaimer .usage-toc__link:hover {
  color: var(--text);
  border-color: var(--cyan);
  background: var(--ink-soft);
}

/* ---------- 双栏条款主体 ---------- */
.page-disclaimer .usage-clauses {
  margin-top: clamp(24px, 4vw, 48px);
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-clause {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  border-bottom: 1px solid var(--line);
  scroll-margin-top: 96px;
}

.page-disclaimer .usage-clause__rail {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 22px 0 4px;
}

.page-disclaimer .usage-clause__no {
  margin: 0;
  flex: none;
  font-size: clamp(1.4rem, 2.8vw, 1.9rem);
  line-height: 1;
  color: var(--cyan);
  letter-spacing: 0.02em;
}

.page-disclaimer .usage-clause__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.02rem;
  line-height: 1.35;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-disclaimer .usage-clause__body {
  min-width: 0;
  overflow-wrap: break-word;
  padding: 10px 0 30px;
}

.page-disclaimer .usage-para {
  margin: 0 0 14px;
  max-width: var(--usage-flow);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.98rem;
  line-height: 1.78;
}

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

.page-disclaimer .usage-para a {
  color: var(--cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(63, 217, 194, 0.4);
  transition: border-color var(--dur-base) var(--ease);
}

.page-disclaimer .usage-para a:hover {
  border-bottom-color: var(--cyan);
}

/* ---------- 条件条目 ---------- */
.page-disclaimer .usage-rules {
  list-style: none;
  margin: 0 0 18px;
  padding: 0;
  max-width: var(--usage-flow);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.page-disclaimer .usage-rules__item {
  padding: 13px 16px;
  border: 1px solid var(--line);
  border-left-width: 2px;
  border-radius: var(--radius-hard);
  background: var(--navy);
  transition:
    background-color var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease);
}

.page-disclaimer .usage-rules__item:hover {
  background: var(--ink-soft);
}

.page-disclaimer .usage-rules__text {
  margin: 0;
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.72;
}

.page-disclaimer .usage-rules--allow .usage-rules__item {
  border-left-color: var(--cyan);
  background: var(--ink-soft);
}

.page-disclaimer .usage-rules--allow .usage-rules__item:hover {
  border-color: var(--cyan);
  border-left-color: var(--cyan);
}

.page-disclaimer .usage-rules--deny .usage-rules__item {
  border-left-color: var(--muted);
}

.page-disclaimer .usage-rules--deny .usage-rules__item:hover {
  border-color: var(--line-strong);
  border-left-color: var(--muted);
}

/* ---------- 可展开说明 ---------- */
.page-disclaimer .usage-more {
  max-width: var(--usage-flow);
  padding: 0 14px;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius-hard);
}

.page-disclaimer .usage-more[open] {
  padding-bottom: 14px;
}

.page-disclaimer .usage-more__summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 0;
  cursor: pointer;
  list-style: none;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  transition: color var(--dur-base) var(--ease);
}

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

.page-disclaimer .usage-more__summary::before {
  content: "";
  flex: none;
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--amber);
}

.page-disclaimer .usage-more__summary:hover,
.page-disclaimer .usage-more__summary:focus-visible {
  color: var(--text);
}

.page-disclaimer .usage-more__body {
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-more__body .usage-para {
  font-size: 0.92rem;
  color: var(--muted);
}

.page-disclaimer .usage-pair {
  margin: 0;
}

.page-disclaimer .usage-pair__term {
  margin: 0 0 5px;
  color: var(--muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.08em;
}

.page-disclaimer .usage-pair__desc {
  margin: 0 0 14px;
  margin-inline-start: 0;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.72;
}

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

/* ---------- 关联入口 ---------- */
.page-disclaimer .usage-links {
  margin-top: clamp(30px, 4.5vw, 58px);
}

.page-disclaimer .usage-links__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px 24px;
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-links__title {
  margin: 0;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  line-height: 1.25;
  letter-spacing: 0.01em;
  color: var(--text);
}

.page-disclaimer .usage-links__note {
  margin: 0;
  font-size: 0.84rem;
}

.page-disclaimer .usage-links__list {
  list-style: none;
  margin: 16px 0 0;
  padding: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 10px;
}

.page-disclaimer .usage-links__item {
  display: flex;
  min-width: 0;
}

.page-disclaimer .usage-links__link {
  display: flex;
  flex-direction: column;
  gap: 8px;
  width: 100%;
  padding: 16px;
  border: 1px solid var(--line);
  border-radius: var(--radius-hard);
  background: var(--navy);
  text-decoration: none;
  transition:
    background-color var(--dur-base) var(--ease),
    border-color var(--dur-base) var(--ease);
}

.page-disclaimer .usage-links__link:hover {
  background: var(--ink-soft);
  border-color: var(--cyan);
}

.page-disclaimer .usage-links__k {
  color: var(--muted);
}

.page-disclaimer .usage-links__t {
  color: var(--text);
  font-size: 0.94rem;
  line-height: 1.6;
}

/* ---------- 焦点反馈 ---------- */
.page-disclaimer a:focus-visible,
.page-disclaimer summary:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: var(--radius-hard);
}

/* ---------- 响应式 ---------- */
@media (min-width: 640px) {
  .page-disclaimer .usage-links__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 880px) {
  .page-disclaimer .usage-clause {
    grid-template-columns: var(--usage-rail) minmax(0, 1fr);
  }

  .page-disclaimer .usage-clause__rail {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    padding: 30px 24px 30px 0;
    border-right: 1px solid var(--line);
  }

  .page-disclaimer .usage-clause__body {
    padding: 30px 0 34px 32px;
  }
}

@media (min-width: 1080px) {
  .page-disclaimer .usage-links__list {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-toc__link,
  .page-disclaimer .usage-rules__item,
  .page-disclaimer .usage-more__summary,
  .page-disclaimer .usage-links__link,
  .page-disclaimer .usage-para a {
    transition-duration: 1ms;
  }
}
<<<END>>>