/* ===== 使用说明页 · 页面专属样式（作用域 .page-disclaimer） ===== */

.page-disclaimer .disc-hero {
  position: relative;
  padding-block: 22px 8px;
}

.page-disclaimer .disc-hero::before {
  content: "";
  position: absolute;
  top: 0;
  right: 0;
  width: 40%;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(53, 230, 210, .45));
  pointer-events: none;
}

.page-disclaimer .disc-hero .breadcrumbs {
  margin-bottom: 30px;
}

.page-disclaimer .disc-hero__grid {
  display: grid;
  gap: 30px;
  align-items: center;
}

.page-disclaimer .disc-hero h1 {
  margin: 14px 0 0;
  font-size: clamp(30px, 8vw, 50px);
  font-weight: 800;
  line-height: 1.16;
  letter-spacing: .02em;
  color: var(--c-text);
}

.page-disclaimer .disc-hero__lead {
  margin: 18px 0 0;
  max-width: 56ch;
  color: var(--c-text-2);
  font-size: var(--fs-body);
  line-height: 1.78;
}

.page-disclaimer .disc-hero__figure {
  margin: 0;
}

/* 正文骨架 */
.page-disclaimer .disc-doc {
  padding-block: 40px 60px;
}

.page-disclaimer .split {
  gap: 32px;
}

.page-disclaimer .disc-index__list {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  display: grid;
  gap: 2px;
}

.page-disclaimer .disc-index__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 9px 8px;
  border-left: 2px solid transparent;
  color: var(--c-text-2);
  font-size: 15px;
  text-decoration: none;
  transition: color var(--t-hover) var(--ease),
              border-color var(--t-hover) var(--ease),
              background-color var(--t-hover) var(--ease);
}

.page-disclaimer .disc-index__list a:hover,
.page-disclaimer .disc-index__list a:focus-visible {
  color: var(--c-text);
  border-left-color: var(--c-cyan);
  background-color: rgba(53, 230, 210, .06);
}

.page-disclaimer .disc-index__no {
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 12px;
  letter-spacing: .08em;
  color: var(--c-magenta);
}

/* 说明条目 */
.page-disclaimer .clause {
  display: grid;
  grid-template-columns: 2.25rem minmax(0, 1fr);
  gap: 14px;
  padding-block: 30px;
  border-top: 1px solid var(--c-line);
}

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

.page-disclaimer .clause:focus-visible {
  outline: 2px solid var(--c-cyan);
  outline-offset: 6px;
}

.page-disclaimer .clause__num {
  display: block;
  height: 28px;
  padding-inline: 6px;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 13px;
  font-weight: 700;
  line-height: 28px;
  letter-spacing: .04em;
  text-align: right;
  color: var(--c-cyan);
  background: linear-gradient(135deg, rgba(53, 230, 210, .20), rgba(53, 230, 210, .05));
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 9px), calc(100% - 9px) 100%, 0 100%);
}

.page-disclaimer .clause__title {
  margin: 0 0 12px;
  font-size: 19px;
  font-weight: 700;
  line-height: 1.45;
  color: var(--c-text);
}

.page-disclaimer .clause__body p {
  margin: 0 0 12px;
  max-width: 62ch;
  color: var(--c-text-2);
  line-height: 1.78;
}

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

.page-disclaimer .clause__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 210, .40);
}

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

/* 版本刻度 */
.page-disclaimer .disc-scale {
  list-style: none;
  margin: 20px 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-disclaimer .disc-scale__item {
  padding: 12px 14px;
  border-top: 2px solid var(--c-line);
  background: rgba(22, 32, 60, .55);
  transition: border-color var(--t-hover) var(--ease),
              background-color var(--t-hover) var(--ease);
}

.page-disclaimer .disc-scale__item:hover,
.page-disclaimer .disc-scale__item:focus-visible {
  border-top-color: var(--c-cyan);
  background: rgba(53, 230, 210, .07);
  outline: none;
}

.page-disclaimer .disc-scale__ver {
  display: block;
  font-family: var(--font-mono);
  font-variant-numeric: tabular-nums;
  font-size: 14px;
  letter-spacing: .06em;
  color: var(--c-cyan);
}

.page-disclaimer .disc-scale__note {
  margin: 6px 0 0;
  font-size: 14px;
  line-height: 1.7;
  color: var(--c-text-2);
  opacity: .62;
  transition: opacity var(--t-hover) var(--ease);
}

.page-disclaimer .disc-scale__item:hover .disc-scale__note,
.page-disclaimer .disc-scale__item:focus-visible .disc-scale__note {
  opacity: 1;
}

/* 中段提醒带 */
.page-disclaimer .disc-note {
  margin: 34px 0;
  padding: 18px 20px;
  border-left: 3px solid var(--c-amber);
  background: linear-gradient(90deg, rgba(255, 179, 71, .13), rgba(255, 179, 71, 0) 80%);
}

.page-disclaimer .disc-note__head {
  margin: 0 0 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .14em;
  color: var(--c-amber);
}

.page-disclaimer .disc-note__body {
  margin: 0;
  max-width: 60ch;
  color: var(--c-text);
  font-size: 15.5px;
  line-height: 1.78;
}

.page-disclaimer .disc-note__body a {
  color: var(--c-cyan);
  text-decoration: none;
  border-bottom: 1px solid rgba(53, 230, 210, .45);
}

.page-disclaimer .disc-note__body a:hover {
  border-bottom-color: var(--c-cyan);
}

/* 服务范围清单 */
.page-disclaimer .disc-scope {
  list-style: none;
  margin: 16px 0;
  padding: 0;
  display: grid;
  gap: 8px;
}

.page-disclaimer .disc-scope li {
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 10px 12px;
  background: var(--c-bg-2);
  border-left: 2px solid var(--c-line);
}

.page-disclaimer .disc-scope__key {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 12px;
  letter-spacing: .1em;
  color: var(--c-magenta);
}

.page-disclaimer .disc-scope__val {
  color: var(--c-text-2);
  font-size: 15px;
  line-height: 1.7;
}

/* 结尾动作 */
.page-disclaimer .disc-tail {
  margin-top: 40px;
  padding: 26px 22px;
  border-top: 1px solid var(--c-line);
  background: var(--c-bg-2);
  display: grid;
  gap: 18px;
}

.page-disclaimer .disc-tail__text {
  margin: 0;
  max-width: 54ch;
  color: var(--c-text);
  line-height: 1.78;
}

.page-disclaimer .disc-tail__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- 响应式 ---------- */

@media (min-width: 760px) {
  .page-disclaimer .disc-doc {
    padding-block: 56px 80px;
  }

  .page-disclaimer .split {
    gap: 44px;
  }

  .page-disclaimer .clause {
    grid-template-columns: 2.5rem minmax(0, 1fr);
    gap: 18px;
    padding-block: 34px;
  }

  .page-disclaimer .disc-tail {
    padding: 30px 32px;
  }
}

@media (min-width: 900px) {
  .page-disclaimer .disc-hero {
    padding-block: 34px 12px;
  }

  .page-disclaimer .disc-hero__grid {
    grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr);
    gap: 48px;
  }

  .page-disclaimer .disc-scale {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 10px;
  }
}

@media (min-width: 1020px) {
  .page-disclaimer .disc-index {
    position: sticky;
    top: 92px;
    align-self: start;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .disc-index__list a,
  .page-disclaimer .disc-scale__item,
  .page-disclaimer .disc-scale__note {
    transition: none;
  }
}