:root {
  --ca-sidebar-w: 272px;
}

.cdb-policy__grid a {
  color: var(--dd-accent);
  text-decoration: underline dashed;
  text-underline-offset: 3px;
  transition: color 0.2s ease;
}

.cdb-policy__grid a:hover {
  color: var(--dd-accent-2);
}

.cdb-root {
  display: flex;
  min-height: 100vh;
  background: var(--dd-bg);
  position: relative;
}

.dd-nav-wrap { position: absolute !important; }

.cdb-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  width: var(--ca-sidebar-w);
  flex-shrink: 0;
  background: var(--dd-bg-contrast);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--dd-border-subtle);
  transition: transform var(--dd-transition-slow);
  z-index: 200;
}

.cdb-main {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cdb-topbar {
  display: none;
  align-items: center;
  gap: 12px;
  padding: 0 16px;
  height: 52px;
  background: var(--dd-bg-contrast);
  border-bottom: 1px solid var(--dd-border-subtle);
  position: sticky;
  top: 0;
  flex-shrink: 0;
}

.cdb-hamburger {
  width: 36px;
  height: 36px;
  border: none;
  background: inherit;
  color: var(--dd-text-soft);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  flex-shrink: 0;
  transition: all var(--dd-transition-fast);
}
.cdb-hamburger:hover { background: var(--dd-accent-soft); color: var(--dd-accent); }

.cdb-topbar-title {
  flex: 1;
  font-family: var(--dd-font-display);
  font-size: 13px;
  font-weight: 700;
  color: var(--dd-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cdb-topbar-cta {
  font-family: var(--dd-font-display);
  font-size: 12px;
  font-weight: 700;
  color: var(--dd-accent);
  padding: 6px 14px;
  border: 1px solid var(--dd-accent);
  border-radius: var(--dd-radius-pill);
  text-decoration: none;
  transition: all var(--dd-transition-fast);
  white-space: nowrap;
}
.cdb-topbar-cta:hover {
  background: var(--dd-accent);
  color: #fff;
}

.cdb-hero {
  position: relative;
  overflow: hidden;
  padding: 52px 52px 44px;
  background: var(--dd-bg-soft);
  border-bottom: 1px solid var(--dd-border-subtle);
}

.cdb-hero__glow {
  position: absolute;
  inset: 0;
  background: var(--cdb-course-gradient, linear-gradient(135deg, #e34c26, #ec4899));
  opacity: 0.07;
  pointer-events: none;
}

.cdb-hero__glow::after {
  content: '';
  position: absolute;
  top: -80px;
  right: -80px;
  width: 420px;
  height: 420px;
  background: var(--cdb-course-gradient, linear-gradient(135deg, #e34c26, #ec4899));
  border-radius: 50%;
  opacity: 0.12;
  filter: blur(60px);
}

.cdb-hero__inner {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 48px;
}

.cdb-hero__left {
  flex: 1;
  min-width: 0;
}

.cdb-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 5px 12px;
  border-radius: var(--dd-radius-pill);
  background: var(--dd-accent-soft);
  border: 1px solid rgba(99, 102, 241, 0.25);
  font-family: var(--dd-font-display);
  font-size: 11px;
  font-weight: 700;
  color: var(--dd-accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 18px;
}

.cdb-hero__icon-wrap {
  margin-bottom: 16px;
}

.cdb-hero__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 14px;
  border-radius: var(--dd-radius-sm);
  background: var(--cdb-course-gradient, linear-gradient(135deg, #e34c26, #f06529));
  font-family: var(--dd-font-display);
  font-size: 18px;
  font-weight: 800;
  color: #fff;
  letter-spacing: -0.02em;
  line-height: 1;
}

.cdb-hero__title {
  font-family: var(--dd-font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--dd-text);
  line-height: 1.2;
  margin: 0 0 6px;
  letter-spacing: -0.025em;
}

.cdb-hero__subtitle {
  font-family: var(--dd-font-display);
  font-size: 14px;
  font-weight: 600;
  color: var(--dd-text-softer);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 16px;
}

.cdb-hero__desc {
  font-family: var(--dd-font-body);
  font-size: 15px;
  line-height: 1.7;
  color: var(--dd-text-soft);
  margin: 0 0 28px;
  max-width: 540px;
}

.cdb-hero__actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.cdb-btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 22px;
  border-radius: var(--dd-radius-sm);
  font-family: var(--dd-font-display);
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: all var(--dd-transition-fast);
  cursor: pointer;
  border: none;
  outline: none;
}

.cdb-btn--primary {
  background: var(--dd-accent);
  color: #fff;
}
.cdb-btn--primary:hover {
  background: var(--dd-accent-strong);
  transform: translateY(-1px);
  color: #fff;
  text-decoration: none;
}

.cdb-btn--ghost {
  background: transparent;
  color: var(--dd-text-soft);
  border: 1px solid var(--dd-border-subtle);
}
.cdb-btn--ghost:hover {
  background: rgba(255, 255, 255, 0.04);
  color: var(--dd-text);
  border-color: rgba(255, 255, 255, 0.1);
  text-decoration: none;
}

.cdb-btn--lg {
  padding: 14px 30px;
  font-size: 15px;
}

.cdb-hero__right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 24px;
  flex-shrink: 0;
}

.cdb-ring-wrap {
  position: relative;
  width: 130px;
  height: 130px;
  flex-shrink: 0;
}

.cdb-ring {
  width: 130px;
  height: 130px;
  transform: rotate(-90deg);
}

.cdb-ring__track {
  fill: none;
  stroke: var(--dd-bg);
  stroke-width: 8;
}

.cdb-ring__fill {
  fill: none;
  stroke: url(#cdb-ring-grad);
  stroke-width: 8;
  stroke-linecap: round;
  stroke-dasharray: 314.16; /* 2π × 50 */
  stroke-dashoffset: calc(314.16px - (314.16px * var(--ring-pct, 0) / 100));
  transition: stroke-dashoffset 1.2s cubic-bezier(0.33, 1, 0.68, 1);
}

.cdb-ring::before {
  content: '';
}

.cdb-ring__label {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.cdb-ring__num {
  font-family: var(--dd-font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--dd-text);
  line-height: 1;
}

.cdb-ring__num small {
  font-size: 14px;
  font-weight: 700;
  color: var(--dd-accent);
}

.cdb-ring__sub {
  font-family: var(--dd-font-display);
  font-size: 10px;
  font-weight: 700;
  color: var(--dd-text-softer);
  text-transform: uppercase;
  letter-spacing: 0.07em;
}

/* Quick stats under ring */
.cdb-hero__quick-stats {
  display: flex;
  gap: 20px;
}

.cdb-qs {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 3px;
}

.cdb-qs__val {
  font-family: var(--dd-font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--dd-text);
  line-height: 1;
}

.cdb-qs__key {
  font-family: var(--dd-font-body);
  font-size: 10px;
  color: var(--dd-text-softer);
  white-space: nowrap;
}

.cdb-stats {
  padding: 32px 52px 0;
}

.cdb-stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.cdb-stat-card {
  background: var(--dd-bg-soft);
  border: 1px solid var(--dd-border-subtle);
  border-radius: var(--dd-radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--dd-transition-fast), transform var(--dd-transition-fast);
  position: relative;
  overflow: hidden;
}

.cdb-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  border-radius: var(--dd-radius-md) var(--dd-radius-md) 0 0;
  opacity: 0;
  transition: opacity var(--dd-transition-fast);
}

.cdb-stat-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  transform: translateY(-2px);
}

.cdb-stat-card:hover::before { opacity: 1; }

.cdb-stat-card--progress::before { background: linear-gradient(90deg, var(--dd-accent), var(--dd-accent-2)); }
.cdb-stat-card--lessons::before  { background: linear-gradient(90deg, var(--dd-cyan), var(--dd-accent)); }
.cdb-stat-card--chapters::before { background: linear-gradient(90deg, var(--dd-accent-2), #a855f7); }
.cdb-stat-card--time::before     { background: linear-gradient(90deg, #f59e0b, #ef4444); }

.cdb-stat-card__icon {
  width: 36px;
  height: 36px;
  border-radius: var(--dd-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
}

.cdb-stat-card--progress .cdb-stat-card__icon { background: var(--dd-accent-soft); color: var(--dd-accent); }
.cdb-stat-card--lessons  .cdb-stat-card__icon { background: rgba(6,182,212,0.12); color: var(--dd-cyan); }
.cdb-stat-card--chapters .cdb-stat-card__icon { background: var(--dd-accent-2-soft); color: var(--dd-accent-2); }
.cdb-stat-card--time     .cdb-stat-card__icon { background: rgba(245,158,11,0.12); color: #f59e0b; }

.cdb-stat-card__body {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.cdb-stat-card__val {
  font-family: var(--dd-font-display);
  font-size: 26px;
  font-weight: 800;
  color: var(--dd-text);
  line-height: 1;
  letter-spacing: -0.02em;
}

.cdb-stat-card__val em {
  font-style: normal;
  font-size: 15px;
  font-weight: 600;
  color: var(--dd-text-softer);
}

.cdb-stat-card__val small {
  font-size: 14px;
  font-weight: 600;
  color: var(--dd-text-softer);
}

.cdb-stat-card__key {
  font-family: var(--dd-font-body);
  font-size: 12px;
  color: var(--dd-text-softer);
}

.cdb-stat-card__bar {
  height: 4px;
  background: var(--dd-bg);
  border-radius: 99px;
  overflow: hidden;
}

.cdb-stat-card__bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--dd-accent), var(--dd-accent-2));
  border-radius: 99px;
  transition: width 1s cubic-bezier(0.33, 1, 0.68, 1);
}

.cdb-section-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 24px;
}

.cdb-section-head__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--dd-radius-sm);
  background: var(--dd-accent-soft);
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dd-accent);
  flex-shrink: 0;
}

.cdb-section-head__title {
  font-family: var(--dd-font-display);
  font-size: 20px;
  font-weight: 800;
  color: var(--dd-text);
  margin: 0 0 2px;
  letter-spacing: -0.02em;
}

.cdb-section-head__sub {
  font-family: var(--dd-font-body);
  font-size: 13px;
  color: var(--dd-text-softer);
  margin: 0;
}

.cdb-policy {
  padding: 40px 52px 0;
}

.cdb-policy__intro {
  background: var(--dd-bg-soft);
  border: 1px solid var(--dd-border-subtle);
  border-left: 3px solid var(--dd-accent);
  border-radius: 0 var(--dd-radius-sm) var(--dd-radius-sm) 0;
  padding: 16px 20px;
  margin-bottom: 28px;
}

.cdb-policy__intro p {
  font-family: var(--dd-font-body);
  font-size: 14px;
  line-height: 1.7;
  color: var(--dd-text-soft);
  margin: 0;
}

.cdb-policy__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.cdb-policy-item {
  background: var(--dd-bg-soft);
  border: 1px solid var(--dd-border-subtle);
  border-radius: var(--dd-radius-md);
  padding: 22px;
  transition: border-color var(--dd-transition-fast), transform var(--dd-transition-fast),
              box-shadow var(--dd-transition-fast);
}

.cdb-policy-item:hover {
  border-color: rgba(99, 102, 241, 0.25);
  transform: translateY(-2px);
  box-shadow: var(--dd-shadow-subtle);
}

.cdb-policy-item__header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 10px;
}

.cdb-policy-item__emoji {
  font-size: 20px;
  line-height: 1;
  flex-shrink: 0;
}

.cdb-policy-item__title {
  font-family: var(--dd-font-display);
  font-size: 15px;
  font-weight: 700;
  color: var(--dd-text);
  margin: 0;
  letter-spacing: -0.01em;
}

.cdb-policy-item__body {
  font-family: var(--dd-font-body);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--dd-text-soft);
  margin: 0;
}

.cdb-chapters-ov {
  padding: 40px 52px 0;
}

.cdb-chapters-ov__list {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.cdb-chov-item {
  display: flex;
  align-items: center;
  gap: 16px;
  background: var(--dd-bg-soft);
  border: 1px solid var(--dd-border-subtle);
  border-radius: var(--dd-radius-md);
  padding: 18px 20px;
  transition: border-color var(--dd-transition-fast), background var(--dd-transition-fast);
}

.cdb-chov-item:hover {
  border-color: rgba(99, 102, 241, 0.25);
  background: var(--dd-bg-softer);
}

.cdb-chov-item__num {
  width: 36px;
  height: 36px;
  border-radius: var(--dd-radius-sm);
  background: var(--dd-bg);
  border: 1px solid var(--dd-border-subtle);
  font-family: var(--dd-font-display);
  font-size: 14px;
  font-weight: 800;
  color: var(--dd-text-softer);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--dd-transition-fast);
}

.cdb-chov-item:hover .cdb-chov-item__num {
  background: var(--dd-accent-soft);
  color: var(--dd-accent);
  border-color: rgba(99, 102, 241, 0.3);
}

.cdb-chov-item__body {
  flex: 1;
  min-width: 0;
}

.cdb-chov-item__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 10px;
}

.cdb-chov-item__title {
  font-family: var(--dd-font-display);
  font-size: 14px;
  font-weight: 700;
  color: var(--dd-text);
  margin: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.cdb-chov-item__count {
  font-family: var(--dd-font-body);
  font-size: 12px;
  color: var(--dd-text-softer);
  white-space: nowrap;
  flex-shrink: 0;
}

.cdb-chov-item__bar {
  height: 4px;
  background: var(--dd-bg);
  border-radius: 99px;
  overflow: hidden;
}

.cdb-chov-item__bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--dd-accent), var(--dd-accent-2));
  border-radius: 99px;
  transition: width 1s cubic-bezier(0.33, 1, 0.68, 1);
}

.cdb-chov-item__cta {
  width: 34px;
  height: 34px;
  border-radius: var(--dd-radius-sm);
  background: var(--dd-bg);
  border: 1px solid var(--dd-border-subtle);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dd-text-softer);
  text-decoration: none;
  transition: all var(--dd-transition-fast);
  flex-shrink: 0;
}

.cdb-chov-item__cta:hover {
  background: var(--dd-accent);
  border-color: var(--dd-accent);
  color: #fff;
  text-decoration: none;
}

.cdb-footer-cta {
  padding: 48px 52px 52px;
}

.cdb-footer-cta__inner {
  background: var(--dd-bg-soft);
  border: 1px solid var(--dd-border-subtle);
  border-radius: var(--dd-radius-lg);
  padding: 36px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 28px;
  position: relative;
  overflow: hidden;
}

.cdb-footer-cta__inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--dd-accent-soft) 0%, transparent 60%);
  pointer-events: none;
}

.cdb-footer-cta__text {
  position: relative;
}

.cdb-footer-cta__text h3 {
  font-family: var(--dd-font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--dd-text);
  margin: 0 0 6px;
  letter-spacing: -0.02em;
}

.cdb-footer-cta__text p {
  font-family: var(--dd-font-body);
  font-size: 14px;
  color: var(--dd-text-soft);
  margin: 0;
}

.cdb-footer-cta .cdb-btn--primary {
  position: relative;
  flex-shrink: 0;
}

.cdb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--dd-transition-med);
}

.cdb-overlay.active {
  opacity: 1;
}

.ca-nav::-webkit-scrollbar { width: 4px; }
.ca-nav::-webkit-scrollbar-track { background: transparent; }
.ca-nav::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.08);
  border-radius: 99px;
}
.ca-nav::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.14);
}

.cdb-sidebar-empty {
  padding: 24px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--dd-text-softer);
}

@media (min-width: 1400px) {
  .cdb-hero          { padding: 60px 72px 52px; }
  .cdb-stats         { padding: 36px 72px 0; }
  .cdb-policy        { padding: 44px 72px 0; }
  .cdb-chapters-ov   { padding: 44px 72px 0; }
  .cdb-footer-cta    { padding: 52px 72px 60px; }
  .cdb-stats__grid   { grid-template-columns: repeat(4, 1fr); }
}

@media (max-width: 1280px) {
  .cdb-hero          { padding: 40px 40px 36px; }
  .cdb-stats         { padding: 28px 40px 0; }
  .cdb-policy        { padding: 36px 40px 0; }
  .cdb-chapters-ov   { padding: 36px 40px 0; }
  .cdb-footer-cta    { padding: 40px 40px 44px; }
  .cdb-stats__grid   { grid-template-columns: repeat(4, 1fr); gap: 12px; }
  .cdb-policy__grid  { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 1024px) {
  :root { --ca-sidebar-w: 288px; }
  .cdb-hamburger { display: flex; }
  .cdb-stats__grid   { grid-template-columns: repeat(2, 1fr); }
  .cdb-hero__right   { display: none; }
  .cdb-hero__desc    { max-width: 100%; }
  .cdb-footer-cta__inner { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 900px) {
  .cdb-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    height: 100%;
    transform: translateX(-100%);
    z-index: 200;
    width: min(var(--ca-sidebar-w), 85vw);
  }

  .cdb-sidebar.open    { transform: translateX(0); }
  .cdb-overlay         { display: block; pointer-events: none; }
  .cdb-overlay.active  { pointer-events: auto; }
  .ca-brand__close     { display: flex; }
  .cdb-topbar          { display: flex; }

  .cdb-hero          { padding: 28px 24px 24px; }
  .cdb-stats         { padding: 24px 24px 0; }
  .cdb-policy        { padding: 28px 24px 0; }
  .cdb-chapters-ov   { padding: 28px 24px 0; }
  .cdb-footer-cta    { padding: 28px 24px 32px; }
  .cdb-footer-cta__inner { padding: 26px 24px; }
}

@media (max-width: 768px) {
  .cdb-stats__grid   { grid-template-columns: repeat(2, 1fr); gap: 10px; }
  .cdb-policy__grid  { grid-template-columns: 1fr; }
  .cdb-hero__title   { font-size: 1.6rem; }
}

@media (max-width: 600px) {
  .cdb-stats__grid   { grid-template-columns: 1fr 1fr; gap: 8px; }
  .cdb-stat-card     { padding: 16px; }
  .cdb-stat-card__val { font-size: 22px; }

  .cdb-hero          { padding: 24px 16px 20px; }
  .cdb-hero__badge   { font-size: 10px; padding: 4px 10px; }
  .cdb-hero__title   { font-size: 1.4rem; }
  .cdb-hero__desc    { font-size: 14px; }

  .cdb-stats         { padding: 20px 16px 0; }
  .cdb-policy        { padding: 24px 16px 0; }
  .cdb-chapters-ov   { padding: 24px 16px 0; }
  .cdb-footer-cta    { padding: 24px 16px 28px; }
  .cdb-footer-cta__inner { padding: 22px 20px; gap: 18px; }
  .cdb-footer-cta__text h3 { font-size: 18px; }

  .cdb-chov-item     { padding: 14px 14px; gap: 12px; }
  .cdb-policy-item   { padding: 18px; }
  .cdb-section-head__title { font-size: 17px; }
}

@media (max-width: 380px) {
  .cdb-stats__grid   { grid-template-columns: 1fr; }
  .cdb-hero__actions { flex-direction: column; align-items: stretch; }
  .cdb-btn           { justify-content: center; }
}

.ca-sidebar .ca-brand {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  padding: 18px 16px 14px;
  border-bottom: 1px solid var(--dd-border-subtle);
  flex-shrink: 0;
}

.ca-sidebar .ca-brand__close {
  width: 28px;
  height: 28px;
  border-radius: var(--dd-radius-sm);
  color: var(--dd-text-softer);
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 13px;
  transition: all var(--dd-transition-fast);
  background: none;
  border: none;
  cursor: pointer;
}

.ca-sidebar .ca-brand__close:hover {
  background: var(--dd-accent-soft);
  color: var(--dd-accent);
}

.ca-sidebar .ca-sidebar-meta  { padding: 12px 16px 8px; flex-shrink: 0; }
.ca-sidebar .ca-prog-label {
  display: flex; align-items: center; justify-content: space-between;
  font-size: 11px; font-weight: 600; font-family: var(--dd-font-display);
  color: var(--dd-text-softer); text-transform: uppercase;
  letter-spacing: 0.06em; margin-bottom: 8px;
}
.ca-sidebar .ca-prog-pct      { color: var(--dd-accent); font-weight: 700; }
.ca-sidebar .ca-prog-track    { height: 4px; background: var(--dd-bg-soft); border-radius: 99px; overflow: hidden; }
.ca-sidebar .ca-prog-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--dd-accent), var(--dd-accent-2));
  border-radius: 99px;
  transition: width 0.6s cubic-bezier(0.33,1,0.68,1);
}
.ca-sidebar .ca-sidebar-search { padding: 10px 14px 4px; flex-shrink: 0; }
.ca-sidebar .ca-search-wrap   { position: relative; }
.ca-sidebar .ca-search-wrap svg {
  position: absolute; left: 11px; top: 50%; transform: translateY(-50%);
  font-size: 12px; color: var(--dd-text-softer); pointer-events: none;
  width: 13px; height: 13px;
}
.ca-sidebar .ca-search-input {
  width: 100%; padding: 8px 12px 8px 32px;
  background: var(--dd-bg-soft); border: 1px solid var(--dd-border-subtle);
  border-radius: var(--dd-radius-sm); color: var(--dd-text);
  font-size: 13px; outline: none; transition: all var(--dd-transition-fast);
}
.ca-sidebar .ca-search-input::placeholder { color: var(--dd-text-softer); }
.ca-sidebar .ca-search-input:focus { border-color: var(--dd-accent); background: var(--dd-accent-soft); }
.ca-sidebar .ca-nav           { flex: 1; overflow-y: auto; padding: 8px 0 20px; }
.ca-sidebar .ca-chapter       { margin-bottom: 2px; }
.ca-sidebar .ca-chapter-hd {
  display: flex; align-items: center; justify-content: space-between;
  padding: 9px 16px; cursor: pointer; transition: background var(--dd-transition-fast);
  user-select: none;
}
.ca-sidebar .ca-chapter-hd:hover { background: rgba(255,255,255,0.03); }
.ca-sidebar .ca-chapter-hd-left  { display: flex; align-items: center; gap: 8px; }
.ca-sidebar .ca-chapter-hd-num {
  width: 18px; height: 18px; border-radius: 4px; background: var(--dd-bg-soft);
  font-size: 10px; font-weight: 700; color: var(--dd-text-softer);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--dd-font-display); flex-shrink: 0;
}
.ca-sidebar .ca-chapter-hd-title {
  font-size: 11px; font-weight: 700; font-family: var(--dd-font-display);
  text-transform: uppercase; letter-spacing: 0.07em; color: var(--dd-text-softer);
}
.ca-sidebar .ca-chapter-hd svg {
  width: 12px; height: 12px; color: var(--dd-text-softer);
  transition: transform var(--dd-transition-fast); flex-shrink: 0;
}
.ca-sidebar .ca-chapter.open .ca-chapter-hd svg { transform: rotate(180deg); }
.ca-sidebar .ca-chapter-lessons {
  overflow: hidden; max-height: 0;
  transition: max-height 0.38s cubic-bezier(0.4,0,0.2,1);
}
.ca-sidebar .ca-chapter.open .ca-chapter-lessons { max-height: 9999px; }
.ca-sidebar .ca-lesson {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 15px; border-left: 3px solid transparent;
  color: var(--dd-text); text-decoration: none;
  transition: all var(--dd-transition-fast);
  font-size: 13.5px; position: relative;
}
.ca-sidebar .ca-lesson:hover { background: var(--dd-accent-soft); color: var(--dd-text); border-left-color: rgba(99,102,241,0.4); text-decoration: none; }
.ca-sidebar .ca-lesson.active { background: var(--dd-accent-soft); color: var(--dd-accent); border-left-color: var(--dd-accent); font-weight: 600; }
.ca-sidebar .ca-lesson.done   { color: var(--dd-text-soft); }
.ca-sidebar .ca-lesson svg    { width: 14px; height: 14px; flex-shrink: 0; }
.ca-sidebar .ca-lesson.done svg  { color: var(--dd-success); }
.ca-sidebar .ca-lesson.active svg { color: var(--dd-accent); }
.ca-sidebar .ca-lesson-name  { flex: 1; line-height: 1.4; }

.svg-icon { width: 14px; height: 14px; }