.page-disclaimer {
  --usage-stripe: color-mix(in srgb, var(--c-batch) 26%, transparent);
  --usage-pad: 22px;
  padding-block-end: 8px;
}

/* 面包屑与首屏 */
.page-disclaimer .breadcrumbs {
  margin: 22px 0 14px;
  font-size: 13px;
  letter-spacing: 0.04em;
  color: var(--c-slate);
}
.page-disclaimer .breadcrumbs a {
  color: var(--c-electric);
}
.page-disclaimer .breadcrumbs__sep {
  color: var(--c-clay);
  margin: 0 8px;
}

.page-disclaimer .usage-hero {
  position: relative;
  margin: 0 auto 40px;
  border: var(--line);
  box-shadow: var(--shadow);
  background: var(--c-paper);
  overflow: hidden;
}
.page-disclaimer .usage-hero::before {
  content: "";
  display: block;
  height: 9px;
  background-image: repeating-linear-gradient(to right, var(--c-ink) 0 2px, transparent 2px 26px);
  background-repeat: repeat-x;
  background-size: 26px 9px;
  border-bottom: var(--line);
}
.page-disclaimer .usage-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
}
.page-disclaimer .usage-hero__text {
  padding: 26px var(--usage-pad) 22px;
}
.page-disclaimer .usage-hero h1 {
  margin: 8px 0 14px;
  font-family: var(--font-serif);
  font-size: clamp(30px, 7vw, 52px);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--c-ink);
}
.page-disclaimer .usage-hero__lead {
  max-width: 40em;
  margin: 0 0 18px;
  font-size: 16px;
  line-height: 1.75;
  color: var(--c-slate);
}
.page-disclaimer .usage-hero__quick {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.page-disclaimer .usage-hero__quick li {
  padding: 4px 10px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-ink);
  background: var(--c-mist);
  border: 1px solid var(--c-ink);
  border-radius: var(--radius);
}
.page-disclaimer .usage-hero__figure {
  position: relative;
  display: flex;
  flex-direction: column;
  min-height: 220px;
  margin: 0;
  border-top: var(--line);
  background: var(--c-ridge);
}
.page-disclaimer .usage-hero__figure img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 200px;
  object-fit: cover;
}
.page-disclaimer .usage-hero__bar {
  padding: 9px 14px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-paper);
  background: var(--c-ink);
  border-top: var(--line);
}

/* 规则区 */
.page-disclaimer .rule-zone {
  background: var(--c-mist);
  border-top: var(--line);
  border-bottom: var(--line);
  padding: 40px 0 46px;
}
.page-disclaimer .rule-zone .section__head {
  margin-bottom: 26px;
}
.page-disclaimer .rule-zone .section__title {
  font-family: var(--font-serif);
  font-size: clamp(26px, 5vw, 40px);
  line-height: 1.2;
  letter-spacing: -0.01em;
  color: var(--c-ink);
  margin: 8px 0 10px;
}
.page-disclaimer .rule-zone__intro {
  max-width: 38em;
  margin: 0;
  font-size: 15px;
  line-height: 1.7;
  color: var(--c-slate);
}

.page-disclaimer .rule-list {
  display: grid;
  gap: 20px;
}
.page-disclaimer .rule-card {
  display: grid;
  grid-template-columns: 46px 1fr;
  background: var(--c-paper);
  border: var(--line);
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-disclaimer .rule-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
}
.page-disclaimer .rule-card__index {
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--c-ridge);
  color: var(--c-paper);
  border-right: var(--line);
}
.page-disclaimer .rule-card__index .mono {
  font-size: 18px;
  letter-spacing: 0.04em;
}
.page-disclaimer .rule-card__body {
  padding: 18px 16px 20px;
}
.page-disclaimer .rule-card__head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 6px 14px;
  margin-bottom: 10px;
}
.page-disclaimer .rule-card__title {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 21px;
  line-height: 1.35;
  color: var(--c-ink);
}
.page-disclaimer .rule-card__scope {
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.04em;
  color: var(--c-slate);
  background: var(--c-mist);
  border: 1px solid var(--c-ink);
  border-radius: var(--radius);
  white-space: nowrap;
}
.page-disclaimer .rule-card__text {
  margin: 0;
  font-size: 15.5px;
  line-height: 1.75;
  color: var(--c-slate);
}
.page-disclaimer .rule-card__text a,
.page-disclaimer .rule-card__list a {
  color: var(--c-electric);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.page-disclaimer .rule-card__more {
  margin-top: 14px;
  border-top: 1px dashed var(--c-clay);
}
.page-disclaimer .rule-card__more > summary {
  display: flex;
  align-items: center;
  gap: 8px;
  padding-top: 12px;
  list-style: none;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--c-electric);
  cursor: pointer;
}
.page-disclaimer .rule-card__more > summary::-webkit-details-marker {
  display: none;
}
.page-disclaimer .rule-card__more > summary::before {
  content: "＋";
  font-family: var(--font-mono);
  color: var(--c-jersey);
}
.page-disclaimer .rule-card__more[open] > summary::before {
  content: "－";
}
.page-disclaimer .rule-card__list {
  margin: 10px 0 0;
  padding: 0 0 0 18px;
  list-style: none;
  font-size: 14px;
  line-height: 1.75;
  color: var(--c-slate);
}
.page-disclaimer .rule-card__list li {
  position: relative;
  margin-bottom: 7px;
}
.page-disclaimer .rule-card__list li::before {
  content: "";
  position: absolute;
  left: -16px;
  top: 10px;
  width: 7px;
  height: 7px;
  background: var(--c-clay);
}

.page-disclaimer .rule-card--beta .rule-card__index {
  background: var(--c-batch);
  color: var(--c-ink);
}
.page-disclaimer .rule-card--beta .rule-card__body {
  background-image: repeating-linear-gradient(
    135deg,
    var(--usage-stripe) 0 10px,
    transparent 10px 22px
  );
}
.page-disclaimer .rule-card--contact .rule-card__index {
  background: var(--c-jersey);
}

/* 下一步入口 */
.page-disclaimer .usage-next {
  padding: 40px 0 24px;
}
.page-disclaimer .usage-next .rule {
  margin-bottom: 26px;
}
.page-disclaimer .usage-next__title {
  margin: 0 0 18px;
  font-family: var(--font-serif);
  font-size: clamp(24px, 4.6vw, 34px);
  line-height: 1.2;
  color: var(--c-ink);
}
.page-disclaimer .usage-next__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
}
.page-disclaimer .usage-next__item {
  display: block;
  padding: 16px 18px;
  border: var(--line);
  background: var(--c-paper);
  box-shadow: var(--shadow-sm);
  text-decoration: none;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.page-disclaimer .usage-next__item:hover {
  transform: translate(-2px, -2px);
  box-shadow: var(--shadow);
}
.page-disclaimer .usage-next__label {
  display: inline-block;
  margin-bottom: 8px;
  padding: 3px 9px;
  font-size: 12px;
  letter-spacing: 0.06em;
  color: var(--c-ink);
  background: var(--c-batch);
  border: 1px solid var(--c-ink);
}
.page-disclaimer .usage-next__name {
  display: block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 17px;
  line-height: 1.5;
  color: var(--c-ink);
}
.page-disclaimer .usage-next__hint {
  display: block;
  margin-top: 6px;
  font-size: 13px;
  line-height: 1.6;
  color: var(--c-slate);
}

/* 收束 */
.page-disclaimer .usage-pitch {
  margin: 44px 0 0;
}
.page-disclaimer .usage-pitch svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 120px;
}
.page-disclaimer .usage-pitch .pitch-stroke {
  stroke: var(--c-moss);
  stroke-width: 2;
  fill: none;
}
.page-disclaimer .usage-pitch .pitch-ring {
  stroke: var(--c-clay);
  stroke-width: 2;
  fill: none;
  stroke-dasharray: 6 6;
}
.page-disclaimer .usage-pitch .pitch-dot {
  fill: var(--c-jersey);
}
.page-disclaimer .usage-pitch .annotation {
  display: block;
  margin-top: 12px;
  font-size: 12.5px;
  line-height: 1.7;
  color: var(--c-slate);
}
.page-disclaimer .usage-top-link {
  margin: 22px 0 0;
}
.page-disclaimer .link-arrow {
  display: inline-block;
  font-family: var(--font-sans);
  font-weight: 700;
  font-size: 14px;
  color: var(--c-electric);
}
.page-disclaimer .link-arrow::after {
  content: " ↑";
  font-family: var(--font-mono);
}

/* 桌面端布局与刻度栏 */
@media (min-width: 900px) {
  .page-disclaimer {
    --usage-pad: 34px;
  }
  .page-disclaimer .usage-hero__grid {
    grid-template-columns: 7fr 5fr;
    align-items: stretch;
  }
  .page-disclaimer .usage-hero__text {
    padding: 38px 34px 32px;
  }
  .page-disclaimer .usage-hero__figure {
    border-top: 0;
    border-left: var(--line);
  }
  .page-disclaimer .rule-zone {
    padding: 56px 0 62px;
  }
  .page-disclaimer .rule-zone .section__head {
    max-width: 46em;
    margin-bottom: 34px;
  }
  .page-disclaimer .rule-zone__inner {
    position: relative;
    padding-right: 66px;
  }
  .page-disclaimer .rule-zone__inner::after {
    content: "";
    position: absolute;
    top: 0;
    right: 0;
    width: 26px;
    height: 100%;
    border-right: 2px solid var(--c-clay);
    background-image: repeating-linear-gradient(
      to bottom,
      var(--c-clay) 0 2px,
      transparent 2px 18px
    );
    background-repeat: no-repeat;
    background-size: 14px 100%;
    background-position: left top;
    pointer-events: none;
  }
  .page-disclaimer .rule-card {
    grid-template-columns: 66px 1fr;
  }
  .page-disclaimer .rule-card__body {
    padding: 24px 26px 26px;
  }
  .page-disclaimer .rule-card__title {
    font-size: 23px;
  }
  .page-disclaimer .rule-card__text {
    max-width: 62ch;
  }
  .page-disclaimer .rule-list > .rule-card:nth-child(even) {
    transform: translateX(18px);
  }
  .page-disclaimer .rule-list > .rule-card:nth-child(even):hover {
    transform: translate(16px, -2px);
  }
  .page-disclaimer .usage-next__grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 18px;
  }
}

@media (min-width: 1180px) {
  .page-disclaimer .rule-zone__inner {
    padding-right: 88px;
  }
  .page-disclaimer .rule-zone__inner::after {
    width: 40px;
    background-size: 22px 100%;
  }
  .page-disclaimer .usage-next__grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* 动效降级 */
@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .rule-card,
  .page-disclaimer .usage-next__item {
    transition: opacity 0.12s linear;
  }
  .page-disclaimer .rule-card:hover,
  .page-disclaimer .rule-list > .rule-card:nth-child(even):hover,
  .page-disclaimer .usage-next__item:hover {
    transform: none;
  }
}
</final>