/**
 * L12 宾语从句讲义 · 专题样式（版式外壳见 ../shared/grammar-handout.css）
 */

body.grammar-handout-page.l12-handout {
  background:
    radial-gradient(circle at 12% 12%, rgba(204, 251, 241, 0.55) 0%, transparent 42%),
    radial-gradient(circle at 88% 88%, rgba(186, 230, 253, 0.45) 0%, transparent 40%),
    linear-gradient(168deg, #e6fffa 0%, #f0fdfa 38%, #f8fafc 100%);
}

body.grammar-handout-page main.sheet.l12-handout {
  max-width: var(--gh-sheet-max, 900px);
}

/* —— 封面（屏幕） —— */
body.grammar-handout-page.l12-handout .handout-cover {
  position: relative;
  margin: -0.25rem -0.5rem 1.25rem;
  padding: 2.5rem 1.5rem 2.75rem;
  border-radius: 10px 24px 12px 20px;
  overflow: hidden;
  text-align: center;
  color: #1a2a3a;
}

body.grammar-handout-page.l12-handout .handout-cover__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, #ccfbf1 0%, #f0fdfa 42%, #fff 100%),
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(13, 148, 136, 0.2), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 85%, rgba(74, 144, 217, 0.12), transparent 50%);
  border: 1px solid rgba(13, 148, 136, 0.22);
  border-radius: inherit;
  z-index: 0;
}

body.grammar-handout-page.l12-handout .handout-cover__bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #0d9488, #14b8a6, #4a90d9);
}

body.grammar-handout-page.l12-handout .handout-cover__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
      circle at 20% 30%,
      rgba(13, 148, 136, 0.08) 0 1px,
      transparent 1px
    ),
    radial-gradient(circle at 80% 70%, rgba(74, 144, 217, 0.06) 0 1px, transparent 1px);
  background-size: 18px 18px, 22px 22px;
  opacity: 0.65;
  pointer-events: none;
}

body.grammar-handout-page.l12-handout .handout-cover__inner {
  position: relative;
  z-index: 1;
  max-width: 28rem;
  margin: 0 auto;
}

body.grammar-handout-page.l12-handout .handout-cover-logo {
  display: block;
  width: 92px;
  height: auto;
  margin: 0 auto 0.85rem;
}

body.grammar-handout-page.l12-handout .handout-cover__brand {
  margin: 0 0 1rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: #0f766e;
}

body.grammar-handout-page.l12-handout .handout-cover__en {
  margin: 0 0 0.35rem;
  font-family: "Georgia", "Times New Roman", "Songti SC", serif;
  font-size: 1.05rem;
  font-style: italic;
  letter-spacing: 0.1em;
  color: #4a7c9b;
}

body.grammar-handout-page.l12-handout .handout-cover__title {
  margin: 0 0 0.5rem;
  font-size: clamp(1.85rem, 5vw, 2.55rem);
  font-weight: 800;
  letter-spacing: 0.12em;
  line-height: 1.22;
  color: #0d1b2a;
}

body.grammar-handout-page.l12-handout .handout-cover__rule {
  width: 3.5rem;
  height: 3px;
  margin: 0 auto 1rem;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #0d9488, transparent);
}

body.grammar-handout-page.l12-handout .handout-cover__focus {
  margin: 0;
  font-size: 0.88rem;
  line-height: 1.65;
  font-weight: 500;
  color: #475569;
  letter-spacing: 0.04em;
}

body.grammar-handout-page.l12-handout .handout-section > h2.section-title:first-child {
  margin-top: 0;
}

body.grammar-handout-page.l12-handout .map-hint {
  margin: 0.55rem 0 0;
  font-size: 0.86rem;
  color: var(--gh-ink-soft, #5d4037);
  line-height: 1.55;
}

body.grammar-handout-page.l12-handout h2.section-title {
  font-size: 1.1rem;
  color: #0f766e;
  margin: 1.2rem 0 0.65rem;
  padding-bottom: 0.3rem;
  border-bottom: 3px solid rgba(13, 148, 136, 0.35);
}

body.grammar-handout-page.l12-handout .note {
  font-size: 0.86rem;
  color: var(--gh-ink-soft, #5d4037);
  padding: 0.6rem 0.75rem;
  border-radius: 12px;
  border: 2px dashed rgba(13, 148, 136, 0.45);
  background: rgba(240, 253, 250, 0.85);
  margin: 0.45rem 0 0.7rem;
  font-weight: 600;
}

body.grammar-handout-page.l12-handout .note-tight {
  margin-bottom: 0;
}

body.grammar-handout-page.l12-handout .grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0.5rem 0;
}

body.grammar-handout-page.l12-handout .card {
  padding: 0.75rem 0.85rem;
  border-radius: 14px;
  border: 2px solid rgba(13, 148, 136, 0.22);
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 2px 3px 0 rgba(0, 0, 0, 0.04);
  break-inside: avoid;
  page-break-inside: avoid;
}

body.grammar-handout-page.l12-handout .card > strong {
  display: block;
  margin-bottom: 0.2rem;
  color: #0f766e;
}

body.grammar-handout-page.l12-handout .card .use-hint strong,
body.grammar-handout-page.l12-handout .card ul.compact strong,
body.grammar-handout-page.l12-handout .card ol.compact strong {
  display: inline;
}

body.grammar-handout-page.l12-handout .stack-cards {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 0.85rem;
}

body.grammar-handout-page.l12-handout .stack-cards .card {
  width: 100%;
  padding: 0.85rem 1rem;
  border-left: 5px solid rgba(13, 148, 136, 0.55);
}

body.grammar-handout-page.l12-handout .stack-cards + .grid-2 {
  margin-top: 0.25rem;
}

body.grammar-handout-page.l12-handout ul.compact {
  margin: 0.35rem 0 0;
  padding-left: 1.15rem;
}

body.grammar-handout-page.l12-handout .compact li {
  margin: 0.28rem 0;
}

body.grammar-handout-page.l12-handout .checklist-compact {
  font-size: 0.9rem;
}

body.grammar-handout-page.l12-handout .example {
  font-weight: 700;
  color: #1e293b;
  font-size: 0.9rem;
}

body.grammar-handout-page.l12-handout table.data {
  width: 100%;
  border-collapse: collapse;
  margin: 0.5rem 0;
  font-size: 0.84rem;
  background: #fff;
  border-radius: 12px;
  overflow: hidden;
  border: 2px solid rgba(13, 148, 136, 0.2);
}

body.grammar-handout-page.l12-handout .data th,
body.grammar-handout-page.l12-handout .data td {
  padding: 0.45rem 0.5rem;
  border-bottom: 1px solid rgba(128, 91, 47, 0.12);
  text-align: left;
  vertical-align: top;
}

body.grammar-handout-page.l12-handout .data th {
  background: rgba(13, 148, 136, 0.88);
  color: #fff;
  font-weight: 900;
}

body.grammar-handout-page.l12-handout .data tr:nth-child(even) td {
  background: rgba(240, 253, 250, 0.5);
}

body.grammar-handout-page.l12-handout .data-caption {
  font-size: 0.82rem;
  color: var(--gh-ink-soft, #5d4037);
  margin: 0.35rem 0 0.25rem;
  font-weight: 800;
}

body.grammar-handout-page.l12-handout .mark-that {
  color: #b03a2e;
  font-weight: 900;
  background: rgba(232, 93, 76, 0.12);
  padding: 0 0.2rem;
  border-radius: 4px;
}

body.grammar-handout-page.l12-handout .mark-wh {
  color: #145c95;
  font-weight: 900;
  background: rgba(74, 144, 217, 0.14);
  padding: 0 0.2rem;
  border-radius: 4px;
}

body.grammar-handout-page.l12-handout .mark-if {
  color: #6b3b7b;
  font-weight: 900;
  background: rgba(155, 89, 182, 0.14);
  padding: 0 0.2rem;
  border-radius: 4px;
}

body.grammar-handout-page.l12-handout .use-tag {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 900;
  padding: 0.06rem 0.38rem;
  border-radius: 999px;
  margin-right: 0.35rem;
  vertical-align: middle;
}

body.grammar-handout-page.l12-handout .use-tag.speak {
  background: rgba(13, 148, 136, 0.2);
  color: #0f766e;
}

body.grammar-handout-page.l12-handout .use-tag.write {
  background: rgba(232, 93, 76, 0.18);
  color: #8b2e22;
}

body.grammar-handout-page.l12-handout .use-hint {
  font-size: 0.78rem;
  color: #64748b;
  font-weight: 600;
  margin: 0.25rem 0 0;
  line-height: 1.45;
}

body.grammar-handout-page.l12-handout .wrong {
  color: #9e2f24;
  text-decoration: underline wavy #e85d4c;
  text-underline-offset: 3px;
  font-weight: 900;
}

body.grammar-handout-page.l12-handout .right {
  color: #1d6c3d;
  font-weight: 900;
}

body.grammar-handout-page.l12-handout .write-lines {
  margin: 0.5rem 0 0;
  padding: 0.5rem 0.65rem;
  border: 2px dashed rgba(93, 64, 55, 0.28);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.7);
}

body.grammar-handout-page.l12-handout .write-lines .prompt {
  font-size: 0.86rem;
  color: #5d4037;
  font-weight: 800;
  margin: 0.35rem 0 0.2rem;
}

body.grammar-handout-page.l12-handout .write-lines .rule {
  border-bottom: 1px solid rgba(0, 0, 0, 0.22);
  min-height: 1.75rem;
  margin-bottom: 0.4rem;
}

@media (max-width: 720px) {
  body.grammar-handout-page.l12-handout .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media print {
  body.grammar-handout-page.l12-handout .mark-that,
  body.grammar-handout-page.l12-handout .mark-wh,
  body.grammar-handout-page.l12-handout .mark-if {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}