/* ===== 使用说明页 · 页面作用域样式 ===== */
.page-disclaimer {
  --dis-max: 880px;
  --dis-dash: 1.5px dashed rgba(140, 148, 155, 0.75);
  --dis-shadow: 6px 6px 0 rgba(17, 22, 28, 0.08);

  background: var(--paper);
  color: var(--ink);
  padding-block: clamp(24px, 4.5vw, 52px) clamp(56px, 9vw, 104px);
}

.page-disclaimer .dis-wrap {
  width: min(100% - 2 * clamp(18px, 4.5vw, 48px), var(--dis-max));
  margin-inline: auto;
}

/* —— 面包屑 —— */
.page-disclaimer .breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: clamp(18px, 3vw, 30px);
  font-family: var(--sans);
  font-size: 12px;
  letter-spacing: 0.08em;
  color: var(--stone);
}

.page-disclaimer .breadcrumb a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid currentColor;
  transition: color var(--ease);
}

.page-disclaimer .breadcrumb a:hover {
  color: var(--signal);
}

.page-disclaimer .breadcrumb__sep {
  color: var(--stone);
}

/* —— 刊头 —— */
.page-disclaimer .dis-head {
  border-top: var(--line);
  border-bottom: var(--line);
  padding: clamp(18px, 3vw, 28px) 0 clamp(20px, 3vw, 30px);
}

.page-disclaimer .dis-head__meta {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  margin-bottom: 14px;
}

.page-disclaimer .dis-head__ver {
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  letter-spacing: 0.06em;
  color: var(--gold);
  border: 1.5px solid var(--gold);
  padding: 2px 8px;
}

.page-disclaimer .dis-head__t {
  margin: 0 0 14px;
  max-width: 20ch;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(24px, 4.6vw, 40px);
  line-height: 1.28;
  letter-spacing: -0.01em;
}

.page-disclaimer .dis-head__d {
  margin: 0;
  max-width: 58ch;
  font-family: var(--sans);
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--ink);
  opacity: 0.82;
}

/* —— 顶部印刷特写 —— */
.page-disclaimer .dis-fig {
  margin: clamp(22px, 3.6vw, 36px) 0 clamp(24px, 4vw, 40px);
}

.page-disclaimer .dis-fig img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 12 / 5;
  object-fit: cover;
}

.page-disclaimer .dis-fig .media-frame__cap {
  font-family: var(--sans);
  font-size: 12.5px;
  letter-spacing: 0.02em;
  color: var(--stone);
}

/* —— 章节索引卡 —— */
.page-disclaimer .dis-toc {
  margin-bottom: clamp(26px, 4vw, 44px);
  padding: clamp(16px, 2.6vw, 24px);
  background: var(--sand);
  border: var(--line);
  box-shadow: var(--dis-shadow);
}

.page-disclaimer .dis-toc__t {
  margin: 0 0 12px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-deep);
}

.page-disclaimer .dis-toc__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.page-disclaimer .dis-toc__list a {
  display: flex;
  align-items: baseline;
  gap: 10px;
  padding: 7px 6px;
  font-family: var(--sans);
  font-size: 14.5px;
  line-height: 1.5;
  color: var(--ink);
  text-decoration: none;
  border-bottom: 1px dotted rgba(140, 148, 155, 0.6);
  transition: background var(--ease), color var(--ease);
}

.page-disclaimer .dis-toc__list a:hover,
.page-disclaimer .dis-toc__list a:focus-visible {
  background: rgba(95, 168, 188, 0.16);
  color: var(--cyan-deep);
}

.page-disclaimer .dis-toc__list .numb {
  flex: 0 0 auto;
  min-width: 2.1em;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 13px;
  color: var(--signal);
}

/* —— 五个短章 —— */
.page-disclaimer .dis-sec {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px 22px;
  padding-block: clamp(20px, 3vw, 30px);
  border-bottom: var(--dis-dash);
}
因为section数量是5个，最后一个去掉底部虚线
.page-disclaimer .dis-sec:last-of-type {
  border-bottom: 0;
}

.page-disclaimer .dis-sec__num {
  font-family: var(--mono);
  font-weight: 700;
  font-size: clamp(30px, 5vw, 42px);
  line-height: 1;
  letter-spacing: -0.02em;
  color: var(--cyan);
}

.page-disclaimer .dis-sec__t {
  margin: 8px 0 10px;
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(19px, 2.5vw, 24px);
  line-height: 1.4;
  letter-spacing: -0.005em;
}

.page-disclaimer .dis-sec__body p {
  margin: 0 0 10px;
  max-width: 62ch;
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.8;
}

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

.page-disclaimer .dis-sec__body a {
  color: var(--cyan-deep);
  text-decoration: none;
  border-bottom: 1px solid rgba(30, 90, 107, 0.45);
  transition: color var(--ease), border-color var(--ease);
}

.page-disclaimer .dis-sec__body a:hover {
  color: var(--signal);
  border-color: var(--signal);
}

/* —— 引用写法示例框 —— */
.page-disclaimer .dis-sample {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  margin: 6px 0 14px;
  padding: 10px 12px;
  background: var(--sand);
  border: var(--line);
}

.page-disclaimer .dis-sample__k {
  flex: 0 0 auto;
  padding: 3px 8px;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--sans);
  font-size: 11.5px;
  font-weight: 500;
  letter-spacing: 0.1em;
}

.page-disclaimer .dis-sample__t {
  margin: 0;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--cyan-deep);
  word-break: break-word;
}

/* —— 底部去向 —— */
.page-disclaimer .dis-next {
  margin-top: clamp(30px, 5vw, 52px);
  padding-top: clamp(20px, 3vw, 28px);
  border-top: var(--line);
}

.page-disclaimer .dis-next__t {
  margin: 0 0 14px;
  font-family: var(--mono);
  font-weight: 700;
  font-size: 12px;
  letter-spacing: 0.16em;
  color: var(--cyan-deep);
}

.page-disclaimer .dis-next__links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-disclaimer .dis-next__links .btn {
  font-family: var(--sans);
  font-size: 13.5px;
  text-decoration: none;
}

/* —— 窄屏保护 —— */
@media (max-width: 480px) {
  .page-disclaimer .dis-wrap {
    width: min(100% - 32px, var(--dis-max));
  }

  .page-disclaimer .dis-head__t {
    max-width: none;
  }

  .page-disclaimer .dis-sample {
    flex-direction: column;
    align-items: flex-start;
  }

  .page-disclaimer .dis-next__links .btn {
    width: 100%;
    text-align: center;
  }
}

/* —— 平板及以上：目录双列，章节两栏 —— */
@media (min-width: 720px) {
  .page-disclaimer .dis-toc__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 24px;
  }

  .page-disclaimer .dis-sec {
    grid-template-columns: 86px minmax(0, 1fr);
    padding-block: clamp(24px, 3vw, 34px);
  }

  .page-disclaimer .dis-sec__t {
    margin-top: 2px;
  }
}

@media (min-width: 1024px) {
  .page-disclaimer .dis-sec {
    grid-template-columns: 108px minmax(0, 1fr);
    gap: 4px 30px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-disclaimer .breadcrumb a,
  .page-disclaimer .dis-toc__list a,
  .page-disclaimer .dis-sec__body a {
    transition: none;
  }
}
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