/* 课程首页 · 手机优先 */

.home-body {
  margin: 0;
  min-height: 100vh;
  background: var(--paper);
}

.home-wrap {
  max-width: 42rem;
  margin: 0 auto;
  padding: 1.25rem 1rem 4rem;
}

.home-hero {
  padding: 1.5rem 0 1.25rem;
  border-bottom: 3px double var(--line);
  margin-bottom: 1.5rem;
}

.home-brand {
  font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: 1.65rem;
  line-height: 1.3;
  margin: 0 0 0.5rem;
}

.home-sub {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.92rem;
}

.home-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.55rem;
  margin-top: 1rem;
}

.home-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.55rem 0.95rem;
  border-radius: 6px;
  border: 1px solid var(--line);
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  cursor: pointer;
}

.home-btn:hover { background: var(--paper-2); text-decoration: none; }

.home-btn.primary {
  background: var(--accent-2);
  border-color: var(--accent-2);
  color: #fff;
}

.home-btn.primary:hover { filter: brightness(1.05); }

.continue-card {
  display: block;
  margin: 0 0 1.75rem;
  padding: 1rem 1.1rem;
  border: 1px solid var(--line);
  border-left: 4px solid var(--accent-2);
  border-radius: 6px;
  background: #e8f0eb;
  color: var(--ink);
  text-decoration: none;
}

.continue-card:hover {
  background: #dce9e0;
  text-decoration: none;
}

.practice-card {
  background: #eef1f6;
  border-left-color: var(--accent-3);
}

.practice-card:hover {
  background: #e4e9f2;
}

.practice-card .continue-label {
  color: var(--accent-3);
}

.continue-label {
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--accent-2);
  font-weight: 600;
}

.continue-title {
  display: block;
  margin-top: 0.35rem;
  font-size: 1.05rem;
  font-weight: 600;
}

.home-section-title {
  font-family: "Songti SC", "Noto Serif SC", Georgia, serif;
  font-size: 1.15rem;
  margin: 0 0 0.85rem;
  padding-bottom: 0.35rem;
  border-bottom: 1px solid var(--line);
}

.lesson-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.55rem;
  margin-bottom: 2rem;
}

@media (min-width: 480px) {
  .lesson-grid { grid-template-columns: 1fr 1fr; }
}

.lesson-card {
  display: block;
  padding: 0.75rem 0.85rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--paper);
  color: var(--ink);
  text-decoration: none;
  transition: background 0.15s ease, border-color 0.15s ease;
}

.lesson-card:hover {
  background: var(--paper-2);
  border-color: #cfc6b4;
  text-decoration: none;
}

.lesson-card.current {
  border-color: var(--accent-2);
  background: #e8f0eb;
}

.lesson-card .card-label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent-3);
}

.lesson-card .card-title {
  display: block;
  margin-top: 0.2rem;
  font-size: 0.92rem;
  line-height: 1.4;
}

.ref-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-bottom: 2rem;
}

.ref-chip {
  display: inline-block;
  padding: 0.4rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--paper-2);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.82rem;
}

.ref-chip:hover {
  background: var(--paper);
  text-decoration: none;
}

.home-tip {
  margin: 0;
  padding: 0.85rem 1rem;
  border-radius: 6px;
  background: var(--quiz-bg);
  border: 1px dashed var(--line);
  font-size: 0.88rem;
  color: var(--ink-soft);
}

.home-footer {
  margin-top: 2rem;
  padding-top: 1rem;
  border-top: 1px solid var(--line);
  font-size: 0.82rem;
  color: var(--ink-soft);
}

.pwa-status {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--ink-soft);
}

.pwa-status.online { color: var(--accent-2); }
.pwa-status.offline { color: var(--accent); }