.page-disclaimer {
  --pd-gap: clamp(24px, 5vw, 52px);
}

.page-disclaimer .clause-hero {
  padding: clamp(28px, 5vw, 52px) 0 clamp(18px, 3vw, 28px);
}

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

.page-disclaimer .eyebrow {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .18em;
  color: var(--c-orange);
}

.page-disclaimer .clause-hero h1 {
  margin: 0;
  max-width: 24ch;
  font-size: clamp(28px, 6.2vw, var(--step-1));
  font-weight: 900;
  line-height: 1.16;
  letter-spacing: -.01em;
  color: var(--text-strong);
}

.page-disclaimer .hero-lede {
  margin: 18px 0 0;
  max-width: 64ch;
  font-size: 17px;
  line-height: 1.75;
  color: var(--text);
}

/* 首屏横幅 */
.page-disclaimer .clause-banner {
  margin: 0 0 var(--pd-gap);
  border: 2px solid var(--c-ink);
  box-shadow: var(--shadow-hard);
  background: var(--c-steel);
  overflow: hidden;
}

.page-disclaimer .clause-banner img {
  display: block;
  width: 100%;
  height: auto;
  object-fit: cover;
}

/* 条款目录 */
.page-disclaimer .clause-toc {
  display: flex;
  flex-wrap: nowrap;
  gap: 1px;
  margin: 0 0 var(--pd-gap);
  background: var(--c-ink);
  border: 2px solid var(--c-ink);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .clause-toc a {
  flex: 1 0 auto;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 18px;
  background: var(--c-steel);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  text-decoration: none;
  white-space: nowrap;
  transition: background .16s var(--ease), color .16s var(--ease);
}

.page-disclaimer .clause-toc .toc-num {
  color: var(--c-orange);
  transition: color .16s var(--ease);
}

.page-disclaimer .clause-toc a:hover {
  background: var(--c-cyan);
  color: var(--c-ink);
}

.page-disclaimer .clause-toc a:hover .toc-num {
  color: var(--c-ink);
}

.page-disclaimer .clause-toc a:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: -2px;
}

/* 条款章节 */
.page-disclaimer .clause-block {
  padding: clamp(34px, 6vw, 64px) 0;
  border-top: 2px solid var(--line);
  scroll-margin-top: 88px;
}

.page-disclaimer .clause-block--steel {
  background: var(--c-steel);
  border-top-color: var(--line-strong);
}

.page-disclaimer .clause-block--paper {
  background: var(--c-paper);
  border-top-color: var(--c-ink);
}

.page-disclaimer .clause-grid {
  display: grid;
  gap: 12px;
}

.page-disclaimer .clause-num {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: .16em;
  color: var(--c-cyan);
}

.page-disclaimer .clause-main h2 {
  margin: 0;
  font-size: clamp(21px, 3.8vw, var(--step-3));
  font-weight: 800;
  line-height: 1.3;
  color: var(--text-strong);
}

.page-disclaimer .clause-lede {
  margin: 14px 0 0;
  max-width: 62ch;
  font-size: 16px;
  line-height: 1.8;
  color: var(--text-dim);
}

.page-disclaimer .clause-body {
  margin: 18px 0 0;
  max-width: 66ch;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-disclaimer .num-inline {
  font-family: var(--font-mono);
  font-weight: 500;
  color: var(--c-orange);
}

/* 条款条目 */
.page-disclaimer .clause-list {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  counter-reset: clause;
}

.page-disclaimer .clause-list > li {
  position: relative;
  counter-increment: clause;
  padding: 16px 0 16px 44px;
  border-top: 1px solid var(--line);
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-disclaimer .clause-list > li:last-child {
  border-bottom: 1px solid var(--line);
}

.page-disclaimer .clause-list > li::before {
  content: counter(clause, decimal-leading-zero);
  position: absolute;
  left: 0;
  top: 17px;
  font-family: var(--font-mono);
  font-size: 13px;
  font-weight: 500;
  color: var(--c-cyan);
}

.page-disclaimer .clause-main a {
  color: var(--c-cyan);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

.page-disclaimer .clause-main a:hover {
  color: var(--c-cyan-soft);
}

/* 版本演进刻度 */
.page-disclaimer .timeline {
  display: flex;
  gap: 1px;
  margin-top: 26px;
  padding-top: 2px;
  border-top: 2px solid var(--line-strong);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.page-disclaimer .timeline:focus-visible {
  outline: 2px solid var(--c-orange);
  outline-offset: 4px;
}

.page-disclaimer .timeline-step {
  position: relative;
  flex: 1 0 170px;
  padding: 24px 18px 4px 0;
}

.page-disclaimer .timeline-step::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 0;
  width: 12px;
  height: 12px;
  background: var(--c-cyan);
  box-shadow: 0 0 0 2px var(--c-ink);
}

.page-disclaimer .timeline-ver {
  display: block;
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--c-orange);
}

.page-disclaimer .timeline-title {
  display: block;
  margin-top: 6px;
  font-size: 16px;
  font-weight: 800;
  color: var(--text-strong);
}

.page-disclaimer .timeline-note {
  display: block;
  margin-top: 6px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-dim);
}

/* 短段落区 */
.page-disclaimer .prose-block {
  display: grid;
  gap: 18px;
  margin-top: 20px;
  max-width: 68ch;
}

.page-disclaimer .prose-block p {
  margin: 0;
  font-size: 16.5px;
  line-height: 1.85;
  color: var(--text);
}

.page-disclaimer .clause-contact {
  margin-top: 6px;
}

.page-disclaimer .clause-mail {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 500;
  color: var(--c-orange);
}

/* 浅色带内的色彩反转 */
.page-disclaimer .clause-block--paper .clause-num {
  color: #0E7F76;
}

.page-disclaimer .clause-block--paper .clause-main h2 {
  color: var(--c-ink);
}

.page-disclaimer .clause-block--paper .clause-lede,
.page-disclaimer .clause-block--paper .prose-block p {
  color: #2A3A4D;
}

.page-disclaimer .clause-block--paper .clause-main a {
  color: #0B5F5A;
}

.page-disclaimer .clause-block--paper .clause-main a:hover {
  color: var(--c-orange);
}

.page-disclaimer .clause-block--paper .clause-mail {
  color: var(--c-ink);
  border-bottom: 2px solid var(--c-orange);
  padding-bottom: 2px;
}

@media (max-width: 640px) {
  .page-disclaimer .clause-banner img {
    aspect-ratio: 5 / 3;
    object-fit: cover;
  }

  .page-disclaimer .clause-list > li {
    padding-left: 36px;
  }

  .page-disclaimer .clause-toc a {
    padding: 12px 14px;
  }
}

@media (min-width: 860px) {
  .page-disclaimer .clause-grid {
    grid-template-columns: 96px minmax(0, 1fr);
    gap: 32px;
    align-items: start;
  }

  .page-disclaimer .timeline-step {
    flex: 1 1 0;
    min-width: 0;
  }
}
</main>