/**
 * 讲义例句列表（ol.sentences / .ex-en+.ex-zh）· 与 ex-pair 同款卡片
 */

body.grammar-handout-page ol.sentences {
  list-style: none;
  margin: 0.5rem 0 0;
  padding: 0;
}

body.grammar-handout-page ol.sentences > li {
  position: relative;
  margin: 0 0 0.65rem;
  padding: 0.45rem 0.55rem 0.5rem 0.65rem;
  border: 1px solid rgba(13, 148, 136, 0.18);
  border-radius: 10px;
  background: linear-gradient(
    145deg,
    rgba(240, 253, 250, 0.55) 0%,
    #fff 42%,
    rgba(248, 251, 253, 0.95) 100%
  );
  overflow: hidden;
}

body.grammar-handout-page ol.sentences > li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  border-radius: 10px 0 0 10px;
  background: linear-gradient(180deg, #0d9488, #4a7c9b, #7eb8d4);
}

body.grammar-handout-page ol.sentences > li .en,
body.grammar-handout-page ol.sentences > li .ex-en,
body.grammar-handout-page .pattern-card .ex-en,
body.grammar-handout-page .level-box .ex-en {
  display: block;
  position: relative;
  z-index: 1;
  margin: 0 0 0.25rem;
  padding: 0.35rem 0.45rem;
  border-radius: 6px 6px 0 0;
  background: rgba(255, 255, 255, 0.72);
  font-weight: 600;
  line-height: 1.5;
}

body.grammar-handout-page ol.sentences > li .zh,
body.grammar-handout-page ol.sentences > li .ex-zh,
body.grammar-handout-page .pattern-card .ex-zh,
body.grammar-handout-page .level-box .ex-zh {
  display: block;
  position: relative;
  z-index: 1;
  margin: 0 0 0.5rem;
  padding: 0.28rem 0.45rem 0.32rem;
  border-radius: 0 0 6px 6px;
  background: rgba(247, 250, 252, 0.85);
  color: #475569;
  line-height: 1.5;
}

body.grammar-handout-page .level-box {
  position: relative;
  margin: 0 0 0.55rem;
  padding: 0.4rem 0.5rem 0.45rem 0.6rem;
  border: 1px solid rgba(13, 148, 136, 0.16);
  border-radius: 8px;
  background: rgba(255, 255, 255, 0.85);
  overflow: hidden;
}

body.grammar-handout-page .level-box::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 3px;
  background: linear-gradient(180deg, #7eb8d4, #4a7c9b);
  border-radius: 8px 0 0 8px;
}

body.grammar-handout-page .level-box .level-label {
  position: relative;
  z-index: 1;
  display: inline-block;
  margin-bottom: 0.35rem;
  font-size: 0.72rem;
  font-weight: 800;
  padding: 0.12rem 0.45rem;
  border-radius: 999px;
  background: rgba(13, 148, 136, 0.12);
  color: #0f766e;
}

body.grammar-handout-page ol.sentences--two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem 0.65rem;
}

@media (max-width: 640px) {
  body.grammar-handout-page ol.sentences--two-col {
    grid-template-columns: 1fr;
  }
}