/**
 * L13 过去完成时讲义 · 专题样式（版式外壳见 ../shared/grammar-handout.css）
 */

body.grammar-handout-page.l13-handout {
  --l13-violet: #7c3aed;
  --l13-violet-ink: #5b21b6;
  --l13-past: #1d4ed8;
  --l13-past-bg: #dbeafe;
  --l13-perf: #6d28d9;
  --l13-perf-bg: #ede9fe;
  background:
    radial-gradient(circle at 12% 12%, rgba(237, 233, 254, 0.55) 0%, transparent 42%),
    radial-gradient(circle at 88% 88%, rgba(204, 251, 241, 0.35) 0%, transparent 40%),
    linear-gradient(168deg, #ddd6fe 0%, #f0fdfa 38%, #e2e8f0 100%);
}

body.grammar-handout-page main.sheet.l13-handout {
  max-width: var(--gh-sheet-max, 900px);
}

/* —— 封面（屏幕） —— */
body.grammar-handout-page.l13-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.l13-handout .handout-cover__bg {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(145deg, #ede9fe 0%, #faf5ff 42%, #fff 100%),
    radial-gradient(ellipse 80% 60% at 15% 10%, rgba(124, 58, 237, 0.2), transparent 55%),
    radial-gradient(ellipse 70% 50% at 90% 85%, rgba(13, 148, 136, 0.1), transparent 50%);
  border: 1px solid rgba(124, 58, 237, 0.22);
  border-radius: inherit;
  z-index: 0;
}

body.grammar-handout-page.l13-handout .handout-cover__bg::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, #7c3aed, #a78bfa, #0d9488);
}

body.grammar-handout-page.l13-handout .handout-cover__bg::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: radial-gradient(
      circle at 20% 30%,
      rgba(124, 58, 237, 0.08) 0 1px,
      transparent 1px
    ),
    radial-gradient(circle at 80% 70%, rgba(13, 148, 136, 0.06) 0 1px, transparent 1px);
  background-size: 18px 18px, 22px 22px;
  opacity: 0.65;
  pointer-events: none;
}

body.grammar-handout-page.l13-handout .handout-cover__inner {
  position: relative;
  z-index: 1;
  max-width: 28rem;
  margin: 0 auto;
}

body.grammar-handout-page.l13-handout .handout-cover-logo {
  display: block;
  width: 92px;
  height: auto;
  margin: 0 auto 0.85rem;
}

body.grammar-handout-page.l13-handout .handout-cover__brand {
  margin: 0 0 1rem;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  color: var(--l13-violet-ink);
}

body.grammar-handout-page.l13-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.l13-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.l13-handout .handout-cover__rule {
  width: 3.5rem;
  height: 3px;
  margin: 0 auto 1rem;
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, #7c3aed, transparent);
}

body.grammar-handout-page.l13-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.l13-handout .handout-section > h2.section-title:first-child {
  margin-top: 0;
}

body.grammar-handout-page.l13-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.l13-handout h2.section-title {
  font-size: 1.1rem;
  color: var(--l13-violet-ink);
  margin: 1.2rem 0 0.65rem;
  padding-bottom: 0.3rem;
  border-bottom: 3px solid rgba(109, 40, 217, 0.35);
}

body.grammar-handout-page.l13-handout .formula-box {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.5rem;
  margin: 0.45rem 0 0.65rem;
  padding: 0.65rem 0.85rem;
  border-radius: 14px;
  border: 2px solid rgba(124, 58, 237, 0.35);
  background: linear-gradient(180deg, #faf5ff, #fff);
  font-weight: 900;
  font-size: clamp(0.95rem, 2.2vw, 1.12rem);
}

body.grammar-handout-page.l13-handout .formula-box .formula-part {
  color: var(--l13-violet-ink);
}

body.grammar-handout-page.l13-handout .formula-box .formula-plus {
  color: #94a3b8;
  font-weight: 800;
}

body.grammar-handout-page.l13-handout .note {
  font-size: 0.86rem;
  color: var(--gh-ink-soft, #5d4037);
  padding: 0.6rem 0.75rem;
  border-radius: 12px;
  border: 2px dashed rgba(124, 58, 237, 0.45);
  background: rgba(250, 245, 255, 0.85);
  margin: 0.45rem 0 0.7rem;
  font-weight: 600;
}

body.grammar-handout-page.l13-handout .grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.65rem;
  margin: 0.5rem 0;
}

body.grammar-handout-page.l13-handout .card {
  padding: 0.75rem 0.85rem;
  border-radius: 14px;
  border: 2px solid rgba(93, 64, 55, 0.2);
  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.l13-handout .card strong {
  color: var(--l13-violet-ink);
}

body.grammar-handout-page.l13-handout ul.compact {
  margin: 0.35rem 0 0;
  padding-left: 1.15rem;
}

body.grammar-handout-page.l13-handout .compact li {
  margin: 0.28rem 0;
}

body.grammar-handout-page.l13-handout .example {
  font-weight: 700;
  color: #1e293b;
  font-size: 0.92rem;
}

body.grammar-handout-page.l13-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(109, 40, 217, 0.2);
}

body.grammar-handout-page.l13-handout .data th,
body.grammar-handout-page.l13-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.l13-handout .data th {
  background: rgba(109, 40, 217, 0.88);
  color: #fff;
  font-weight: 900;
}

body.grammar-handout-page.l13-handout .data tr:nth-child(even) td {
  background: rgba(237, 233, 254, 0.35);
}

body.grammar-handout-page.l13-handout .timeline-text {
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.8rem;
  padding: 0.55rem 0.65rem;
  background: #f8fafc;
  border-radius: 10px;
  border: 2px solid #e2e8f0;
  margin: 0.45rem 0;
  line-height: 1.48;
}

body.grammar-handout-page.l13-handout .mark-had {
  color: var(--l13-perf);
  font-weight: 900;
  background: var(--l13-perf-bg);
  padding: 0 0.2rem;
  border-radius: 4px;
}

body.grammar-handout-page.l13-handout .mark-past {
  color: var(--l13-past);
  font-weight: 900;
  background: var(--l13-past-bg);
  padding: 0 0.2rem;
  border-radius: 4px;
}

body.grammar-handout-page.l13-handout .mark-marker {
  color: #0f766e;
  font-weight: 900;
  background: #ccfbf1;
  padding: 0 0.12rem;
  border-radius: 4px;
}

body.grammar-handout-page.l13-handout .wrong {
  color: #b91c1c;
  text-decoration: line-through;
  font-weight: 800;
}

body.grammar-handout-page.l13-handout .right {
  color: #047857;
  font-weight: 900;
}

body.grammar-handout-page.l13-handout .story-set {
  margin-bottom: 0.35rem;
}

body.grammar-handout-page.l13-handout .story-tag {
  margin: 0 0 0.35rem;
  font-size: 0.8rem;
  font-weight: 800;
  color: var(--l13-violet-ink);
}

body.grammar-handout-page.l13-handout .story-list {
  margin: 0.4rem 0 0;
  padding-left: 0;
  list-style: none;
  counter-reset: story-step;
}

body.grammar-handout-page.l13-handout .story-list > .story-block {
  counter-increment: story-step;
  position: relative;
  padding: 0.55rem 0.65rem 0.55rem 2.35rem;
  border-radius: 12px;
  border: 2px solid #c4b5fd;
  background: #faf5ff;
  margin: 0 0 0.4rem;
  break-inside: avoid;
  page-break-inside: avoid;
}

body.grammar-handout-page.l13-handout .story-list > .story-block::before {
  content: counter(story-step);
  position: absolute;
  left: 0.55rem;
  top: 0.55rem;
  width: 1.35rem;
  height: 1.35rem;
  line-height: 1.35rem;
  text-align: center;
  border-radius: 999px;
  background: var(--l13-violet);
  color: #fff;
  font-size: 0.72rem;
  font-weight: 900;
}

body.grammar-handout-page.l13-handout .story-block.had {
  border-color: #a78bfa;
  background: #f5f3ff;
}

body.grammar-handout-page.l13-handout .story-block.observe {
  border-color: #93c5fd;
  background: #eff6ff;
}

body.grammar-handout-page.l13-handout .story-block .zh-line {
  display: block;
  font-weight: 700;
  color: #64748b;
  margin-top: 0.15rem;
}

body.grammar-handout-page.l13-handout .story-block .en-xl {
  display: block;
  font-weight: 700;
  color: #1e293b;
  line-height: 1.45;
}

body.grammar-handout-page.l13-handout .pitfall-box {
  margin-top: 0.5rem;
  padding: 0.65rem;
  border-radius: 12px;
  border: 2px dashed #fca5a5;
  background: rgba(254, 242, 242, 0.85);
  font-size: 0.84rem;
  font-weight: 700;
  color: #991b1b;
}

body.grammar-handout-page.l13-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.l13-handout .write-lines .prompt {
  font-size: 0.86rem;
  color: #5d4037;
  font-weight: 800;
  margin: 0.35rem 0 0.2rem;
}

body.grammar-handout-page.l13-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.l13-handout .grid-2 {
    grid-template-columns: 1fr;
  }
}

@media print {
  body.grammar-handout-page.l13-handout .mark-had,
  body.grammar-handout-page.l13-handout .mark-past,
  body.grammar-handout-page.l13-handout .mark-marker {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}