.page-disclaimer {
  --ud-gap: 20px;
  padding-bottom: 72px;
}

.page-disclaimer .breadcrumb {
  margin: 20px 0 28px;
}

/* 首屏 */
.page-disclaimer .usage-hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 28px;
  padding-bottom: 36px;
}

.page-disclaimer .usage-hero__main .index-label {
  color: var(--yellow);
}

.page-disclaimer .usage-hero__title {
  font-family: var(--font-head);
  font-weight: 800;
  font-size: clamp(2.6rem, 12vw, 5.2rem);
  line-height: 0.95;
  letter-spacing: -0.02em;
  color: var(--white);
  margin: 14px 0 0;
}

.page-disclaimer .usage-hero__lede {
  margin: 20px 0 0;
  max-width: 42ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--muted);
}

.page-disclaimer .usage-facts {
  margin: 0;
  border-top: 1px solid var(--line);
}

.page-disclaimer .usage-facts__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-facts dt {
  font-size: 13px;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.page-disclaimer .usage-facts dd {
  margin: 0;
  font-family: var(--font-data);
  font-size: 1.35rem;
  color: var(--neon);
}

.page-disclaimer .usage-hero__aside .index-label {
  display: block;
  margin-top: 14px;
  color: var(--muted);
}

/* 顶部抽象信息图 */
.page-disclaimer .usage-cover {
  margin: 0 0 40px;
}

.page-disclaimer .usage-cover__frame {
  aspect-ratio: 16 / 10;
  border: 1px solid var(--line);
  border-radius: var(--radius-panel);
  overflow: hidden;
}

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

.page-disclaimer .usage-cover .figure__caption {
  margin-top: 12px;
  color: var(--muted);
}

/* 条款速览胶囊带 */
.page-disclaimer .usage-nav {
  position: sticky;
  top: 68px;
  z-index: 6;
  margin: 0 calc(var(--gutter) * -1) 8px;
  padding: 0 var(--gutter);
  background: rgba(7, 9, 11, 0.92);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .usage-nav__list {
  display: flex;
  gap: 8px;
  margin: 0;
  padding: 12px 0;
  list-style: none;
  overflow-x: auto;
  scrollbar-width: none;
}

.page-disclaimer .usage-nav__list::-webkit-scrollbar {
  display: none;
}

.page-disclaimer .usage-nav__link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  padding: 8px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-pill);
  color: var(--muted);
  font-size: 13px;
  letter-spacing: 0.04em;
  text-decoration: none;
  transition: color 0.15s var(--ease), background-color 0.15s var(--ease),
    border-color 0.15s var(--ease);
}

.page-disclaimer .usage-nav__link .num {
  font-size: 12px;
  color: var(--yellow);
}

.page-disclaimer .usage-nav__link:hover,
.page-disclaimer .usage-nav__link:focus-visible {
  color: var(--neon-soft);
  border-color: var(--neon);
}

.page-disclaimer .usage-nav__link.is-active {
  color: var(--ink);
  background: var(--neon);
  border-color: var(--neon);
}

.page-disclaimer .usage-nav__link.is-active .num {
  color: var(--ink);
}

/* 编号章节 */
.page-disclaimer .cls {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  padding: 40px 0 8px;
  border-top: 1px solid var(--line);
  scroll-margin-top: 150px;
}

.page-disclaimer .cls::before {
  content: "";
  position: absolute;
  top: -1px;
  left: 0;
  width: 72px;
  height: 2px;
  background: var(--neon);
}

.page-disclaimer .cls__num {
  display: block;
  margin-bottom: 10px;
  font-size: 13px;
  letter-spacing: 0.16em;
  color: var(--neon);
}

.page-disclaimer .cls__title {
  margin: 0 0 18px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: clamp(1.4rem, 5.4vw, 2rem);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--white);
}

.page-disclaimer .cls__body p {
  margin: 0 0 18px;
  line-height: 1.75;
  color: var(--white);
}

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

.page-disclaimer .cls__body a {
  color: var(--neon);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.page-disclaimer .cls__body .num {
  color: var(--neon);
}

/* 条款清单 */
.page-disclaimer .rule-list {
  margin: 0 0 20px;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.page-disclaimer .rule-list li {
  position: relative;
  padding-left: 22px;
  line-height: 1.7;
  color: var(--white);
}

.page-disclaimer .rule-list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.72em;
  width: 10px;
  height: 2px;
  background: var(--neon);
}

.page-disclaimer .rule-list strong {
  color: var(--neon-soft);
  font-weight: 600;
}

/* 折叠补充 */
.page-disclaimer .note-fold {
  margin: 6px 0 20px;
  border: 1px solid var(--line);
  border-radius: var(--radius-card);
  background: var(--panel);
}

.page-disclaimer .note-fold summary {
  padding: 16px 18px;
  cursor: pointer;
  list-style: none;
  font-size: 14px;
  letter-spacing: 0.02em;
  color: var(--muted);
}

.page-disclaimer .note-fold summary::-webkit-details-marker {
  display: none;
}

.page-disclaimer .note-fold summary::after {
  content: "展开";
  float: right;
  font-family: var(--font-data);
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--neon);
}

.page-disclaimer .note-fold[open] summary::after {
  content: "收起";
}

.page-disclaimer .note-fold summary:hover {
  color: var(--white);
}

.page-disclaimer .note-fold__body {
  padding: 0 18px 18px;
}

.page-disclaimer .note-fold__body p {
  margin: 0;
  font-size: 15px;
  color: var(--muted);
}

/* 结尾动作区 */
.page-disclaimer .usage-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 24px 0 18px;
}

.page-disclaimer .usage-back {
  font-size: 15px;
  color: var(--muted);
}

.page-disclaimer .usage-back a {
  color: var(--neon);
}

/* 返回顶部 */
.page-disclaimer .to-top {
  margin-top: 56px;
}

@media (min-width: 900px) {
  .page-disclaimer {
    padding-bottom: 104px;
  }

  .page-disclaimer .breadcrumb {
    margin: 28px 0 40px;
  }

  .page-disclaimer .usage-hero {
    grid-template-columns: minmax(0, 7fr) minmax(0, 5fr);
    gap: 56px;
    align-items: end;
    padding-bottom: 48px;
  }

  .page-disclaimer .usage-cover {
    margin-bottom: 56px;
  }

  .page-disclaimer .usage-cover__frame {
    aspect-ratio: 8 / 3;
  }

  .page-disclaimer .usage-nav {
    top: 84px;
  }

  .page-disclaimer .cls {
    grid-template-columns: 72px minmax(0, 1fr);
    column-gap: 32px;
    padding: 56px 0 16px;
  }

  .page-disclaimer .cls__num {
    grid-column: 1;
    grid-row: 1;
    margin-bottom: 0;
    padding-top: 9px;
  }

  .page-disclaimer .cls__title {
    grid-column: 2;
    grid-row: 1;
    margin-bottom: 20px;
  }

  .page-disclaimer .cls__body {
    grid-column: 2;
    grid-row: 2;
  }

  .page-disclaimer .note-fold {
    max-width: 720px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .usage-nav__link,
  .page-disclaimer .cls__body a {
    transition: none;
  }
}