@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&family=Poppins:wght@600;700;800&display=swap");

:root {
  --cw-blue: #1d4ed8;
  --cw-blue-dark: #1e40af;
  --cw-blue-soft: #dbeafe;
  --cw-blue-chip: #93c5fd;
  --cw-bg: #f8fafc;
  --cw-panel: #ffffff;
  --cw-text: #0f172a;
  --cw-muted: #64748b;
  --cw-muted-2: #64748b;
  --cw-line: rgba(29, 78, 216, 0.22);
  --cw-success: #15803d;
  --cw-danger: #dc2626;
  --cw-sky: #1d4ed8;
  --cw-sky-soft: rgba(29, 78, 216, 0.14);
  --cw-crimson: #dc2626;
  --cw-crimson-soft: rgba(220, 38, 38, 0.1);
  --cw-radius: 10px;
  --cw-shadow: 0 4px 24px rgb(15 23 42 / 0.06);
  --font: "Inter", "Segoe UI", Arial, Helvetica, sans-serif;
  --sidebar-w: 340px;
  --rail-w: 72px;
  --top-h: 64px;
  --fs-xs: 16px;
  --fs-sm: 18px;
  --fs-md: 20px;
  --fs-lg: 26px;
  --fs-xl: 32px;
  --fs-2xl: 40px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  color: var(--cw-text);
  background:
    radial-gradient(900px 420px at 10% -10%, rgb(29 78 216 / 0.14), transparent 60%),
    radial-gradient(700px 360px at 100% 0%, rgb(220 38 38 / 0.08), transparent 55%),
    linear-gradient(180deg, #ffffff 0%, #f8fafc 45%, #fef3c7 100%);
  font-family: var(--font);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

a { color: inherit; text-decoration: none; }
button, input { font: inherit; }
button { cursor: pointer; }
img { display: block; max-width: 100%; }

h1, h2, h3, h4, strong {
  letter-spacing: -0.01em;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
}

/* ========== TOP BAR ========== */
.cw-topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  min-height: var(--top-h);
  padding: 0 20px;
  border-bottom: 1px solid var(--cw-line);
  background: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(14px);
}

.cw-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  justify-self: start;
}

.cw-brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 10px;
  overflow: hidden;
  background: #000;
  box-shadow: 0 4px 14px rgba(0, 84, 166, 0.22);
}

.cw-brand-mark img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

.cw-brand strong {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--cw-text);
  line-height: 1.15;
}

.cw-brand span {
  color: var(--cw-muted);
  font-size: 13px;
  font-weight: 600;
}

.cw-progress-pill {
  display: inline-flex;
  min-width: 220px;
  min-height: 36px;
  padding: 6px 16px;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: 999px;
  background: var(--cw-blue-soft);
  color: var(--cw-blue-dark);
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0;
}

.cw-progress-pill .bar {
  width: 72px;
  height: 6px;
  overflow: hidden;
  border-radius: 999px;
  background: rgba(28, 170, 217, 0.22);
}

.cw-progress-pill .bar > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--cw-blue);
  transition: width 280ms ease;
}

.cw-progress-pill .bar > i {
  display: block;
  height: 100%;
  width: 0%;
  border-radius: inherit;
  background: var(--cw-blue);
  transition: width 280ms ease;
}

.cw-top-actions {
  display: flex;
  gap: 8px;
  justify-self: end;
  align-items: center;
}

.cw-icon-btn {
  display: grid;
  width: 36px;
  height: 36px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  color: var(--cw-muted);
  background: transparent;
}

.cw-icon-btn:hover {
  background: var(--cw-bg);
  color: var(--cw-text);
}

.cw-avatar {
  display: grid;
  width: 34px;
  height: 34px;
  place-items: center;
  border-radius: 50%;
  color: #fff;
  background: #1f1f1f;
  font-size: 12px;
  font-weight: 700;
}

/* ========== APP SHELL ========== */
.cw-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--rail-w);
  height: calc(100vh - var(--top-h));
  max-height: calc(100vh - var(--top-h));
  overflow: hidden;
}

.cw-sidebar {
  display: flex;
  flex-direction: column;
  min-height: 0;
  height: 100%;
  border-right: 1px solid var(--cw-line);
  background: var(--cw-panel);
  overflow: hidden;
}

.cw-sidebar-inner {
  flex: 1;
  min-height: 0;
  padding: 20px 8px 28px 14px;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-gutter: stable;
  scrollbar-width: thin;
  scrollbar-color: #b7bec8 transparent;
}

.cw-sidebar-inner::-webkit-scrollbar {
  width: 10px;
}

.cw-sidebar-inner::-webkit-scrollbar-track {
  margin: 8px 0;
  background: transparent;
}

.cw-sidebar-inner::-webkit-scrollbar-thumb {
  border: 2px solid transparent;
  border-radius: 999px;
  background: #b7bec8;
  background-clip: padding-box;
}

.cw-sidebar-inner::-webkit-scrollbar-thumb:hover {
  background: #8f98a6;
  background-clip: padding-box;
}

.cw-course-title {
  margin: 0 12px 20px;
  font-size: 24px;
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.015em;
  color: var(--cw-text);
}

.cw-module {
  margin-bottom: 8px;
}

.cw-module-toggle {
  display: flex;
  width: 100%;
  padding: 8px 12px 2px;
  align-items: center;
  justify-content: space-between;
  border: 0;
  border-radius: 4px;
  background: transparent;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.4;
  text-align: left;
}

.cw-module-toggle:hover {
  background: #dbeafe;
}

.cw-module-desc {
  margin: 0 12px 14px;
  color: var(--cw-text);
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.35;
  letter-spacing: -0.01em;
}

.cw-item-group {
  margin: 14px 0 6px;
  padding: 0 12px;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.4;
}

.cw-item {
  display: grid;
  grid-template-columns: 20px 1fr;
  gap: 12px;
  width: 100%;
  margin: 0;
  padding: 10px 12px;
  border: 0;
  border-radius: 0;
  background: transparent;
  color: var(--cw-text);
  text-align: left;
}

.cw-item:hover {
  background: rgba(28, 170, 217, 0.12);
}

.cw-item.active {
  background: var(--cw-blue-soft);
  box-shadow: inset 4px 0 0 var(--cw-blue);
}

.cw-item .dot {
  width: 18px;
  height: 18px;
  margin-top: 2px;
  border: 2px solid #a0a4ad;
  border-radius: 50%;
  background: var(--cw-panel);
}

.cw-item.active .dot {
  border-color: var(--cw-blue);
  box-shadow: inset 0 0 0 4px var(--cw-blue);
}

.cw-item.done .dot {
  border-color: var(--cw-success);
  background: var(--cw-success);
  box-shadow: none;
}

.cw-item strong {
  display: block;
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: 0;
  color: var(--cw-text);
}

.cw-item.active strong {
  font-weight: 700;
}

.cw-item small {
  display: block;
  margin-top: 2px;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.35;
  letter-spacing: 0;
}

.cw-module-next {
  margin-top: 18px;
  padding: 16px 12px 0;
  border-top: 1px solid var(--cw-line);
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 400;
}

.cw-module-next small {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--cw-muted);
}

.cw-module-next strong {
  display: block;
  margin-bottom: 4px;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 700;
}

/* ========== MAIN ========== */
.cw-main {
  min-height: 0;
  height: 100%;
  overflow: auto;
  background: var(--cw-bg);
  overscroll-behavior: contain;
}

.cw-rail {
  min-height: 0;
  height: 100%;
  overflow: auto;
  border-left: 1px solid var(--cw-line);
  background: var(--cw-panel);
  padding: 18px 8px;
}

.cw-main-inner {
  width: min(880px, calc(100% - 48px));
  margin: 0 auto;
  padding: 24px 0 72px;
}

.cw-media {
  overflow: hidden;
  border: 1px solid var(--cw-line);
  border-radius: 4px;
  background: #111;
}

.cw-media img,
.cw-media video {
  width: 100%;
  height: min(46vh, 400px);
  object-fit: cover;
}

.cw-title-row {
  display: flex;
  margin: 20px 0 12px;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}

.cw-title-row h1 {
  margin: 0;
  max-width: 34ch;
  color: var(--cw-text);
  font-size: var(--fs-2xl);
  font-weight: 700;
  line-height: 1.25;
  letter-spacing: -0.02em;
}

.cw-save-note {
  display: inline-flex;
  gap: 6px;
  align-items: center;
  margin-top: 6px;
  border: 0;
  background: transparent;
  color: var(--cw-blue);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.2;
  white-space: nowrap;
}

.cw-save-note:hover {
  color: var(--cw-blue-dark);
  text-decoration: underline;
}

.cw-body {
  color: var(--cw-text);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.55;
}

.cw-body h2 {
  margin: 28px 0 10px;
  color: var(--cw-text);
  font-size: var(--fs-xl);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.015em;
}

.cw-body h3 {
  margin: 22px 0 8px;
  color: var(--cw-text);
  font-size: var(--fs-lg);
  font-weight: 700;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.cw-body p,
.cw-body li {
  color: var(--cw-text);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.55;
}

.cw-body p {
  margin: 0 0 14px;
}

.cw-panel {
  margin: 18px 0;
  padding: 18px;
  border: 1px solid var(--cw-line);
  border-radius: var(--cw-radius);
  background: var(--cw-panel);
}

.cw-assist {
  margin: 20px 0 8px;
  padding: 16px 18px;
  border: 1px solid #c9d7eb;
  border-radius: 12px;
  background: #f3f8ff;
}

.cw-assist-title {
  display: flex;
  margin-bottom: 12px;
  align-items: center;
  gap: 8px;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 700;
  line-height: 1.3;
}

.cw-assist-section {
  margin-top: 12px;
}

.cw-assist-section + .cw-assist-section {
  margin-top: 14px;
  padding-top: 14px;
  border-top: 1px solid #c9d7eb;
}

.cw-assist-section-label {
  display: block;
  margin-bottom: 8px;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.cw-assist-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.cw-assist-grid.single {
  grid-template-columns: 1fr;
}

.cw-assist-grid button {
  min-height: 40px;
  padding: 8px 14px;
  border: 1px solid var(--cw-blue);
  border-radius: 24px;
  color: var(--cw-blue);
  background: var(--cw-panel);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: 0;
  text-align: left;
}

.cw-assist-grid button:hover,
.cw-assist-grid button.active {
  border-color: var(--cw-blue-dark);
  color: var(--cw-blue-dark);
  background: #f8fbff;
}

.cw-assist-output,
.cw-assist-notes,
.cw-assist-questions {
  display: none;
  margin-top: 12px;
  padding: 12px 14px;
  border-radius: 8px;
  background: var(--cw-panel);
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 400;
  line-height: 1.45;
}

.cw-assist-output.open,
.cw-assist-notes.open,
.cw-assist-questions.open { display: block; }

.cw-assist-notes {
  border-left: 4px solid var(--cw-blue);
}

.cw-assist-questions {
  border-left: 4px solid var(--cw-success);
}

.assist-label {
  display: block;
  margin-bottom: 6px;
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--cw-muted);
}

.assist-question-list {
  margin: 0;
  padding-left: 20px;
}

.assist-question-list li {
  margin-bottom: 8px;
}

.assist-hint {
  margin: 10px 0 0;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
}

.quiz-review {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.quiz-review > li {
  margin-bottom: 8px;
  padding: 12px 14px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.quiz-review-main {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.quiz-review .ok .quiz-review-main strong { color: var(--cw-success); }
.quiz-review .bad .quiz-review-main strong { color: var(--cw-danger); }

.quiz-note-btn {
  min-height: 34px;
  padding: 0 12px;
  border: 1px solid var(--cw-blue);
  border-radius: 4px;
  color: var(--cw-blue);
  background: var(--cw-panel);
  font-size: var(--fs-xs);
  font-weight: 700;
}

.quiz-note-btn:hover {
  background: var(--cw-blue-soft);
}

.quiz-note {
  margin-top: 10px;
  padding: 10px 12px;
  border-radius: 6px;
  background: #dbeafe;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  line-height: 1.45;
}

.cw-feedback-row {
  display: flex;
  margin: 22px 0 8px;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.cw-feedback-icons {
  display: flex;
  gap: 4px;
}

.cw-feedback-icons .cw-icon-btn {
  color: #6b7280;
  font-size: 16px;
}

.cw-next-btn {
  display: inline-flex;
  min-height: 48px;
  padding: 0 20px;
  align-items: center;
  gap: 8px;
  border: 0;
  border-radius: 4px;
  color: #061018;
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: 0;
}

.cw-next-btn:hover { background: linear-gradient(135deg, #1e40af, #1d4ed8); }

/* Content blocks reused in lessons */
.split-visual,
.why-grid,
.type-grid,
.ppe-grid,
.safety-gallery {
  display: grid;
  gap: 14px;
  margin: 16px 0;
}

.split-visual { grid-template-columns: 1.1fr 0.9fr; align-items: center; }
.split-visual.reverse { grid-template-columns: 0.9fr 1.1fr; }
.type-grid,
.why-grid,
.safety-gallery { grid-template-columns: repeat(3, 1fr); }
.ppe-grid { grid-template-columns: repeat(2, 1fr); }

.float-photo,
.type-card,
.why-card,
.ppe-card,
.safety-shot,
.lesson-visual-banner {
  overflow: hidden;
  border: 1px solid var(--cw-line);
  border-radius: 14px;
  background: var(--cw-panel);
}

.float-photo img,
.why-card img,
.safety-shot img,
.lesson-visual-banner img {
  width: 100%;
  height: 180px;
  object-fit: cover;
}

.lesson-visual-banner {
  position: relative;
  margin-bottom: 16px;
}

.lesson-visual-banner img { height: 240px; }

.lesson-visual-caption {
  position: absolute;
  right: 12px;
  bottom: 12px;
  left: 12px;
  padding: 12px 14px;
  border-radius: 10px;
  color: #fff;
  background: rgba(17, 24, 39, 0.78);
}

.lesson-visual-caption p { margin: 4px 0 0; color: rgba(255,255,255,.85); font-size: 13px; }

.float-photo figcaption,
.why-card strong,
.why-card p,
.safety-shot div,
.type-card,
.ppe-card button,
.ppe-extra {
  padding: 10px 12px;
}

.type-card { padding: 0 0 12px; }
.type-photo { height: 110px; background-size: cover; background-position: center; }
.type-card span {
  display: inline-grid;
  width: 28px;
  height: 28px;
  margin: 10px 12px 6px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--cw-blue);
  font-size: 12px;
  font-weight: 700;
}
.type-card strong,
.type-card p { display: block; padding: 0 12px; }
.type-card strong {
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 700;
}
.type-card p {
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.4;
}

.why-card strong {
  display: block;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 700;
}
.why-card p {
  margin: 0;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.4;
}

.ppe-card strong {
  display: block;
  margin-bottom: 4px;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 700;
}

.ppe-illo {
  height: 72px;
  background: linear-gradient(135deg, #0b3f9c, #0056d2);
}

.ppe-card button {
  width: 100%;
  border: 0;
  background: transparent;
  text-align: left;
}

.ppe-card p {
  margin: 0;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.4;
}

.ppe-extra {
  display: none;
  color: var(--cw-muted);
  font-size: var(--fs-xs);
  font-weight: 400;
  line-height: 1.4;
}

.ppe-card.open .ppe-extra { display: block; }
.ppe-card.open { outline: 2px solid var(--cw-blue-chip); }

.process-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 12px;
}

.process-strip span {
  padding: 6px 10px;
  border-radius: 999px;
  color: var(--cw-blue-dark);
  background: var(--cw-blue-chip);
  font-size: 12px;
  font-weight: 700;
}

.callout {
  margin: 16px 0;
  padding: 14px 16px;
  border-left: 4px solid var(--cw-blue);
  border-radius: 0 8px 8px 0;
  background: var(--cw-blue-soft);
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 400;
  line-height: 1.45;
}

.callout.safe { border-left-color: var(--cw-success); background: #e6f4ea; }
.callout strong {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-sm);
  font-weight: 700;
}

.check-list { display: grid; gap: 8px; }
.check-item {
  display: flex;
  gap: 10px;
  padding: 12px;
  border: 1px solid var(--cw-line);
  border-radius: 10px;
  background: var(--cw-panel);
}
.check-item.done { border-color: #a8d5b5; background: #f0faf3; }
.check-item input { margin-top: 3px; accent-color: var(--cw-blue); }

.goal-chips {
  display: grid;
  gap: 8px;
  padding: 0;
  list-style: none;
}
.goal-chips li {
  padding: 10px 12px;
  border: 1px solid var(--cw-line);
  border-radius: 10px;
  background: var(--cw-panel);
}

.safety-shot.warn { outline: 1px solid #f6c7c4; }
.danger-board {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 12px;
  margin: 16px 0;
  padding: 16px;
  border-radius: 14px;
  color: #fff;
  background: linear-gradient(120deg, #9a1f1b, #d93025);
}
.danger-board p { color: rgba(255,255,255,.92); }
.danger-meter {
  display: grid;
  place-items: center;
  border: 1px dashed rgba(255,255,255,.5);
  border-radius: 12px;
  font-weight: 700;
}

.engage-box,
.engage-visual {
  padding: 16px;
  border: 1px solid var(--cw-line);
  border-radius: 14px;
  background: var(--cw-panel);
}
.engage-visual {
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
  gap: 14px;
}
.engage-visual > img {
  width: 100%;
  height: 100%;
  min-height: 220px;
  object-fit: cover;
  border-radius: 12px;
}

.choice-row { display: grid; gap: 8px; margin-top: 12px; }
.choice-row button {
  padding: 12px 14px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 600;
  line-height: 1.4;
  text-align: left;
}
.choice-row button:hover { border-color: var(--cw-blue); }
.choice-row button.is-right { border-color: var(--cw-success); background: #e6f4ea; }
.choice-row button.is-wrong { border-color: var(--cw-danger); background: #fce8e6; }
.feedback { margin-top: 10px; font-weight: 700; }

.button,
.cw-btn {
  display: inline-flex;
  min-height: 48px;
  padding: 0 20px;
  align-items: center;
  justify-content: center;
  border: 0;
  border-radius: 4px;
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: 0;
}
.button-primary,
.cw-btn-primary {
  color: #061018;
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
}
.button-primary:hover,
.cw-btn-primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e40af);
}
.button-dark {
  color: #0d2a3d;
  background: #dbeafe;
  border: 1px solid rgba(28, 170, 217, 0.3);
}

.quiz-panel {
  padding: 20px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.quiz-panel.is-fun-exercise {
  border-color: rgba(28, 170, 217, 0.35);
  background: linear-gradient(180deg, #f3fbff 0%, #ffffff 48%);
}

.exercise-brief {
  margin: 0 0 18px;
  padding: 14px 16px;
  border-radius: 12px;
  background: rgba(28, 170, 217, 0.1);
  border: 1px solid rgba(28, 170, 217, 0.22);
}

.exercise-brief-kicker {
  margin: 0 0 6px;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: #1e40af;
}

.exercise-brief p {
  margin: 0;
  color: var(--cw-text);
  line-height: 1.45;
}

.exercise-modes {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
}

.exercise-modes li {
  padding: 5px 10px;
  border-radius: 999px;
  background: #fff;
  border: 1px solid rgba(28, 170, 217, 0.28);
  color: #0d2a3d;
  font-size: 12px;
  font-weight: 700;
}

.fun-badge {
  display: inline-block;
  margin: 0 0 8px;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.03em;
  color: #fff;
  background: #1e40af;
}

.fun-badge--scenario { background: #0f7a5c; }
.fun-badge--spot { background: #9a6b2f; }
.fun-badge--choice { background: #1a6f9a; }
.fun-badge--mission { background: #5b4a9a; }

.quiz-question {
  margin-bottom: 18px;
  padding: 14px 12px 14px;
  border-bottom: 1px solid var(--cw-line);
  border-radius: 10px;
}

.quiz-panel.is-fun-exercise .quiz-question {
  background: rgba(255, 255, 255, 0.72);
  border: 1px solid rgba(28, 120, 170, 0.12);
  border-bottom: 1px solid rgba(28, 120, 170, 0.12);
}

.quiz-question h3 {
  margin: 0 0 10px;
  color: var(--cw-text);
  font-size: var(--fs-md);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.quiz-question label {
  display: flex;
  gap: 8px;
  margin-bottom: 6px;
  padding: 10px 12px;
  border-radius: 4px;
  color: var(--cw-text);
  font-size: var(--fs-sm);
  font-weight: 400;
  line-height: 1.4;
}
.quiz-question label:hover { background: #dbeafe; }
.quiz-question.is-correct label:has(input:checked) { background: #e6f4ea; }
.quiz-question.is-wrong label:has(input:checked) { background: #fce8e6; }

.quiz-result {
  margin-top: 14px;
  padding: 16px;
  border-radius: 12px;
  background: var(--cw-bg);
}
.quiz-result.pass { background: #e6f4ea; }
.quiz-result.fail { background: #fce8e6; }
.quiz-actions { display: flex; flex-wrap: wrap; gap: 8px; margin: 12px 0; }

.gate-banner {
  margin-bottom: 14px;
  padding: 12px 14px;
  border-radius: 10px;
  background: #fce8e6;
  color: #8b1d1b;
  font-weight: 700;
}

/* Right rail */
.cw-rail button {
  display: grid;
  width: 100%;
  margin-bottom: 14px;
  padding: 8px 4px;
  place-items: center;
  gap: 4px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--cw-muted);
  font-family: var(--font);
  font-size: 13px;
  font-weight: 600;
  line-height: 1.2;
}

.cw-rail button:hover,
.cw-rail button.active {
  background: var(--cw-blue-soft);
  color: var(--cw-blue-dark);
}

.cw-rail svg {
  width: 18px;
  height: 18px;
}

.cw-utility-drawer {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 80;
  width: min(420px, 100vw);
  height: 100vh;
  display: flex;
  flex-direction: column;
  background: #fff;
  border-left: 1px solid var(--cw-line);
  box-shadow: -12px 0 30px rgba(13, 42, 61, 0.12);
}

.cw-utility-drawer[hidden] { display: none !important; }

.cw-utility-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--cw-line);
  background: #eef7fb;
}

.cw-utility-head h2 {
  margin: 0;
  font-size: 18px;
}

.cw-utility-close {
  border: 0;
  background: transparent;
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  color: var(--cw-muted);
}

.cw-utility-body {
  overflow: auto;
  padding: 16px;
  flex: 1;
}

.cw-utility-loading,
.cw-utility-hint,
.cw-utility-error {
  color: var(--cw-muted);
  line-height: 1.45;
}

.cw-utility-error { color: #8b1d1b; }

.cw-transcript pre,
.cw-note-card pre {
  white-space: pre-wrap;
  margin: 0;
  font-family: inherit;
  line-height: 1.5;
}

.cw-note-form label {
  display: block;
  margin: 10px 0 4px;
  font-weight: 700;
  font-size: 13px;
}

.cw-note-form input,
.cw-note-form textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  font: inherit;
  box-sizing: border-box;
}

.cw-note-form button,
.cw-note-actions button,
.cw-file-list .button {
  margin-top: 10px;
}

.cw-note-list {
  display: grid;
  gap: 12px;
  margin-top: 18px;
}

.cw-note-card {
  border: 1px solid var(--cw-line);
  border-radius: 10px;
  padding: 12px;
  background: #f8fcff;
}

.cw-note-card header {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 8px;
}

.cw-note-actions {
  display: flex;
  gap: 8px;
}

.cw-note-actions button,
.cw-note-form button {
  border: 0;
  border-radius: 8px;
  padding: 8px 12px;
  background: #1d4ed8;
  color: #061018;
  font-weight: 800;
  cursor: pointer;
}

.cw-note-actions button.danger {
  background: #fce8e6;
  color: #8b1d1b;
}

.cw-file-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.cw-file-list li {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  padding: 12px;
  border: 1px solid var(--cw-line);
  border-radius: 10px;
}

.cw-file-list small {
  display: block;
  color: var(--cw-muted);
  margin-top: 4px;
}

@media (max-width: 900px) {
  .cw-utility-drawer {
    width: 100vw;
  }
}

/* Home path (Coursera-ish cards) */
.home-wrap {
  width: min(980px, calc(100% - 40px));
  margin: 0 auto;
  padding: 36px 0 70px;
}

.home-hero {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 24px;
  margin-bottom: 28px;
  padding: 28px;
  border: 1px solid var(--cw-line);
  border-radius: 16px;
  background: var(--cw-panel);
  box-shadow: var(--cw-shadow);
}

.home-hero h1 {
  margin: 8px 0 12px;
  color: var(--cw-text);
  font-size: clamp(28px, 4vw, 36px);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.home-hero p {
  color: var(--cw-muted);
  font-size: var(--fs-md);
  font-weight: 400;
  line-height: 1.5;
}

.home-stat {
  padding: 18px;
  border-radius: 8px;
  background: var(--cw-blue-soft);
  color: var(--cw-blue-dark);
  font-size: var(--fs-sm);
  line-height: 1.5;
}

.home-stat strong {
  display: block;
  margin-bottom: 8px;
  color: var(--cw-text);
  font-size: var(--fs-lg);
  font-weight: 700;
  letter-spacing: -0.01em;
}

.path-list { display: grid; gap: 12px; }
.path-card {
  display: grid;
  grid-template-columns: 64px 1fr auto;
  gap: 14px;
  padding: 16px;
  align-items: center;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}
.path-number {
  display: grid;
  width: 52px;
  height: 52px;
  place-items: center;
  border-radius: 8px;
  color: #fff;
  background: var(--cw-blue);
  font-size: var(--fs-md);
  font-weight: 700;
}
.path-card.locked .path-number { background: #9aa3b5; }
.path-status {
  margin: 0 0 4px;
  color: var(--cw-blue);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.path-card.locked .path-status { color: var(--cw-muted); }
.path-card.done .path-status { color: var(--cw-success); }
.path-exercise-tag {
  display: inline-block;
  margin: 6px 0 8px;
  padding: 4px 10px;
  border-radius: 999px;
  background: rgba(15, 122, 92, 0.12);
  border: 1px solid rgba(15, 122, 92, 0.28);
  color: #0f7a5c;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.02em;
}
.path-body h3 {
  margin: 0 0 4px;
  color: var(--cw-text);
  font-size: 24px;
  font-weight: 700;
  letter-spacing: -0.01em;
}
.path-body p {
  margin: 0 0 4px;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 400;
}
.path-body small {
  color: var(--cw-muted-2);
  font-size: var(--fs-xs);
  font-weight: 400;
}
.locked-note {
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
}

.name-box {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
  margin-bottom: 16px;
}
.name-box input {
  min-height: 44px;
  padding: 0 12px;
  border: 1px solid var(--cw-line);
  border-radius: 10px;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-top: 18px;
}
.feature-card {
  padding: 16px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}
.feature-card h3 {
  margin: 0 0 8px;
  color: var(--cw-text);
  font-size: var(--fs-md);
  font-weight: 700;
  letter-spacing: -0.01em;
}
.feature-card p {
  margin: 0;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 400;
  line-height: 1.45;
}

.site-footer {
  padding: 18px 20px 28px;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 400;
}
.site-footer a {
  color: var(--cw-blue);
  font-weight: 600;
}

.reading-progress { display: none; }
.confetti-layer { pointer-events: none; position: fixed; inset: 0; z-index: 90; overflow: hidden; }
.confetti-piece {
  position: absolute;
  top: -10px;
  width: 8px;
  height: 12px;
  border-radius: 2px;
  animation: confetti-fall 1.5s linear forwards;
}
@keyframes confetti-fall {
  to { transform: translateY(105vh) rotate(480deg); opacity: 0.2; }
}

/* Full-view lesson figures */
.cw-full-figure {
  margin: 0 0 18px;
  overflow: hidden;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.cw-full-figure img {
  width: 100%;
  height: auto;
  max-height: none;
  object-fit: contain;
  display: block;
}

.cw-full-figure figcaption {
  padding: 10px 14px;
  border-top: 1px solid var(--cw-line);
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  font-weight: 600;
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Content helpers for modules */
.cw-table-wrap {
  overflow-x: auto;
  margin: 16px 0;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.cw-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

.cw-table th,
.cw-table td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--cw-line);
  text-align: left;
  vertical-align: top;
  line-height: 1.4;
}

.cw-table th {
  background: #dbeafe;
  color: var(--cw-text);
  font-weight: 700;
}

.cw-table tr:last-child td { border-bottom: 0; }
.cw-table td strong { font-weight: 700; }

.benefit-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin: 16px 0;
  padding: 0;
  list-style: none;
}

.benefit-grid li {
  padding: 12px 14px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
  font-size: var(--fs-sm);
  line-height: 1.4;
}

.benefit-grid li::before {
  content: "✓ ";
  color: var(--cw-success);
  font-weight: 700;
}

.term-list {
  display: grid;
  gap: 10px;
  margin: 14px 0;
  padding: 0;
  list-style: none;
}

.term-list.two-col {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.term-list li {
  padding: 12px 14px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.term-list strong {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-sm);
}

.term-list span {
  color: var(--cw-muted);
  font-size: var(--fs-sm);
  line-height: 1.45;
}

.phase-badge {
  display: inline-flex;
  margin-bottom: 10px;
  padding: 4px 10px;
  border-radius: 999px;
  background: var(--cw-blue-soft);
  color: var(--cw-blue-dark);
  font-size: var(--fs-xs);
  font-weight: 700;
}

.step-list {
  margin: 12px 0 0;
  padding-left: 22px;
}

.step-list li {
  margin-bottom: 8px;
}

.rule-grid {
  display: grid;
  gap: 10px;
  margin: 16px 0;
}

.rule-card {
  padding: 14px 16px;
  border-left: 4px solid var(--cw-blue);
  border-radius: 0 8px 8px 0;
  background: var(--cw-panel);
  border-top: 1px solid var(--cw-line);
  border-right: 1px solid var(--cw-line);
  border-bottom: 1px solid var(--cw-line);
}

.rule-card strong {
  display: block;
  margin-bottom: 4px;
  font-size: var(--fs-sm);
}

.rule-card p {
  margin: 0;
  color: var(--cw-muted);
  font-size: var(--fs-sm);
}

.safety-block {
  margin: 16px 0;
  padding: 16px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

.safety-block h3 {
  margin-top: 0;
}

.cw-menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border: 1px solid var(--cw-line);
  border-radius: 8px;
  background: var(--cw-panel);
}

@media (max-width: 980px) {
  .cw-shell { grid-template-columns: 1fr; }
  .cw-sidebar {
    position: fixed;
    top: var(--top-h);
    bottom: 0;
    left: 0;
    z-index: 40;
    width: min(86vw, 340px);
    height: auto;
    max-height: none;
    transform: translateX(-105%);
    transition: transform 220ms ease;
  }
  .cw-sidebar-inner {
    height: 100%;
  }
  .cw-sidebar.open { transform: translateX(0); }
  .cw-rail { display: none; }
  .cw-menu-toggle { display: grid; place-items: center; }
  .cw-topbar { grid-template-columns: auto 1fr auto; gap: 10px; }
  .home-hero,
  .split-visual,
  .split-visual.reverse,
  .type-grid,
  .why-grid,
  .ppe-grid,
  .safety-gallery,
  .engage-visual,
  .danger-board,
  .feature-grid,
  .cw-assist-grid,
  .path-card,
  .benefit-grid,
  .term-list.two-col {
    grid-template-columns: 1fr;
  }
  .name-box {
    grid-template-columns: 1fr;
  }
}

/* Mobile readability pass — keep lesson cards and navigation responsive. */
@media (max-width: 768px) {
  html {
    -webkit-text-size-adjust: 100%;
    text-size-adjust: 100%;
  }

  body {
    font-size: 15px;
    line-height: 1.5;
  }

  .cw-topbar h1,
  .home-hero h1 {
    font-size: clamp(1.5rem, 7vw, 2.1rem);
  }

  .cw-topbar,
  .cw-topbar p,
  .home-hero p,
  .path-status,
  .hint {
    font-size: 14px;
  }

  .cw-menu-toggle,
  button,
  .button,
  input,
  select,
  textarea {
    font-size: 15px;
    min-height: 42px;
  }

  .cw-file-list small,
  small {
    font-size: 13px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    animation: none !important;
    transition: none !important;
  }
}