:root {
  --blue: #1E477C;
  --red: #9C113B;
  --text: #12263F;
  --muted: #667A96;
  --bg-top: #F8FBFE;
  --bg-bottom: #EEF4F8;
  --panel: #FFFFFF;
  --soft: #EEF4FA;
  --soft-panel: #F7FAFE;
  --soft-border: #E4EDF6;
  --border: #DCE6F0;
  --shadow: 0 14px 34px rgba(18, 38, 63, 0.08);
  --shadow-strong: 0 12px 28px rgba(156, 17, 59, 0.08);
  --radius-xl: 24px;
  --radius-lg: 20px;
  --radius-md: 18px;
  --radius-sm: 16px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family:
    -apple-system,
    BlinkMacSystemFont,
    "Segoe UI",
    Inter,
    "PingFang SC",
    "Hiragino Sans GB",
    "Microsoft YaHei",
    sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, var(--bg-top) 0%, var(--bg-bottom) 100%);
}

.wrap {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 20px 16px 44px;
}

.topbar,
.page-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 6px;
}

.brand-logo {
  display: block;
  height: 26px;
  width: auto;
  object-fit: contain;
}

.brand-text {
  display: inline-flex;
  align-items: center;
  transform: translateY(1px);
  color: var(--blue);
  font-size: 16px;
  font-weight: 800;
  line-height: 1;
}

.top-tag,
.back,
.back-link {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.8);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.back,
.back-link {
  color: var(--blue);
  font-weight: 800;
}

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  padding: 0 18px;
  border-radius: 14px;
  border: 0;
  text-decoration: none;
  font-size: 14px;
  font-weight: 800;
}

.btn-primary {
  background: var(--red);
  color: #fff;
  box-shadow: 0 8px 20px rgba(18, 38, 63, 0.14);
}

.btn-secondary {
  background: #fff;
  color: var(--blue);
  border: 1px solid var(--border);
}

.pill,
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--blue);
  font-size: 12px;
  font-weight: 800;
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: 14px;
}

.section-head h3 {
  margin: 0;
  color: var(--blue);
}

.section-head p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.hero-meta span {
  display: inline-flex;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--soft-panel);
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.module-page .hero {
  margin-top: 16px;
  padding: 26px;
}

.module-page h1 {
  margin: 14px 0 10px;
  color: var(--blue);
  font-size: 36px;
  line-height: 1.15;
}

.module-page .lead {
  max-width: 920px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.85;
}

.module-page .layout {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(300px, 0.85fr);
  gap: 16px;
  margin-top: 18px;
}

.module-page .section {
  padding: 20px;
}

.module-page .section h2 {
  margin: 0 0 14px;
  color: var(--blue);
  font-size: 20px;
}

.module-page .chapter-list,
.module-page .side-grid,
.module-page .path-list {
  display: grid;
}

.module-page .chapter-list {
  gap: 12px;
}

.module-page .side-grid {
  gap: 12px;
}

.module-page .path-list {
  gap: 10px;
}

.module-page .chapter {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 14px;
  align-items: start;
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #fff;
}

.module-page .chapter.in-progress {
  border-color: rgba(156, 17, 59, 0.28);
  background: #FFFDFE;
  box-shadow: var(--shadow-strong);
}

.module-page .chapter-no {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  flex: 0 0 auto;
  border-radius: 999px;
  background: var(--soft);
  color: var(--blue);
  font-size: 14px;
  font-weight: 900;
}

.module-page .chapter.in-progress .chapter-no {
  background: var(--red);
  color: #fff;
}

.module-page .chapter h3 {
  margin: 0;
  color: var(--blue);
  font-size: 17px;
}

.module-page .chapter p {
  margin: 6px 0 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.module-page .status {
  display: inline-flex;
  padding: 6px 9px;
  border-radius: 999px;
  background: var(--soft);
  color: var(--blue);
  font-size: 11px;
  font-weight: 800;
  white-space: nowrap;
}

.module-page .status.in-progress {
  background: rgba(156, 17, 59, 0.08);
  color: var(--red);
}

.module-page .status.done {
  background: rgba(30, 71, 124, 0.08);
  color: var(--blue);
}

.module-page .status.locked {
  background: #F5F7FA;
  color: #7F91A8;
}

.module-page .chapter-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 12px;
}

.module-page .btn {
  min-height: 42px;
  padding: 0 14px;
  font-size: 13px;
}

.module-page .mini-card {
  padding: 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  background: #F8FBFE;
}

.module-page .mini-card strong,
.module-page .path-item strong {
  display: block;
  color: var(--blue);
  font-size: 14px;
}

.module-page .mini-card strong {
  margin-bottom: 6px;
}

.module-page .mini-card p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.75;
}

.module-page .path-item {
  padding: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: #fff;
}

.module-page .path-item span {
  display: block;
  margin-top: 6px;
  color: var(--muted);
  font-size: 12px;
  line-height: 1.7;
}

@media (max-width: 920px) {
  .module-page .layout {
    grid-template-columns: 1fr;
  }

  .module-page h1 {
    font-size: 30px;
  }

  .module-page .btn,
  .site-home-page .hero-actions .btn {
    width: 100%;
  }
}