/* 2.4 continuous lesson surface. Loaded after the legacy lesson skin so this
   scoped mode can change the reading flow without changing other sections. */
#learnView #learnBody.lesson-continuous-mode #learnExplainToolbar .learn-kp-nav,
#learnView #learnBody.lesson-continuous-mode #learnExplainPager {
  display: none !important;
}

#learnView #learnBody.lesson-continuous-mode .learn-explain-scroll {
  background: var(--lesson-continuous-page, #ffffff) !important;
  background-image: none !important;
  padding: 0 0 72px !important;
  scroll-behavior: smooth;
}

#learnView #learnBody.lesson-continuous-mode .learn-explain-body {
  width: 100% !important;
  max-width: none !important;
  background: var(--lesson-continuous-page, #ffffff) !important;
  color: var(--lesson-continuous-ink, #1f2937) !important;
  font-family: Inter, -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif !important;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress {
  position: sticky;
  top: 0;
  z-index: 8;
  width: 100%;
  padding: 28px clamp(22px, 5vw, 72px) 22px;
  background: var(--lesson-continuous-page, #ffffff);
  border-bottom: 1px solid var(--lesson-continuous-line, #dbe4eb);
  box-shadow: none;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-topline {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  width: min(100%, 1120px);
  min-height: 42px;
  margin: 0 auto;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-title {
  color: var(--lesson-continuous-ink, #1f2937);
  font-size: clamp(20px, 2vw, 30px);
  line-height: 1.25;
  font-weight: 760;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-meta {
  display: flex;
  align-items: center;
  gap: 14px;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-label {
  margin: 0;
  color: var(--lesson-continuous-muted, #5f6875);
  font-size: clamp(14px, 1.5vw, 21px);
  line-height: 1.2;
  font-weight: 650;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-theme {
  width: 42px;
  height: 42px;
  border: 1px solid var(--lesson-continuous-line, #dbe4eb);
  border-radius: 10px;
  color: var(--lesson-continuous-muted, #5f6875);
  background: var(--lesson-continuous-surface, #f5f7fa);
  font-size: 20px;
  cursor: pointer;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-theme svg {
  width: 20px;
  height: 20px;
  display: block;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-theme .hidden {
  display: none;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-track {
  width: min(100%, 1120px);
  height: 8px;
  margin: 18px auto 0;
  overflow: hidden;
  background: var(--lesson-continuous-track, #e8eef3);
  border-radius: 999px;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-bar {
  display: block;
  width: 12%;
  height: 100%;
  background: #6d9df5;
  border-radius: inherit;
  transition: width 180ms ease;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-note {
  display: none;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-complete {
  display: none;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-complete:hover:not(:disabled) {
  background: #d9fbe9;
  border-color: #5eead4;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-complete:disabled {
  color: #0f766e;
  background: #f0fdfa;
  cursor: default;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document {
  width: min(100%, 840px);
  margin: 0 auto;
  padding: 38px clamp(22px, 5vw, 48px) 96px;
}

#learnView #learnBody.lesson-continuous-mode {
  --lesson-continuous-page: #ffffff;
  --lesson-continuous-surface: #ffffff;
  --lesson-continuous-ink: #000000;
  --lesson-continuous-muted: #4b5563;
  --lesson-continuous-line: #d1d5db;
  --lesson-continuous-track: #e5e7eb;
}

#learnView #learnBody.lesson-continuous-mode[data-theme="dusk"],
[data-theme="dusk"] #learnView #learnBody.lesson-continuous-mode {
  --lesson-continuous-page: #000000;
  --lesson-continuous-surface: #000000;
  --lesson-continuous-ink: #f7f7f7;
  --lesson-continuous-muted: #b8b8b8;
  --lesson-continuous-line: #4b5563;
  --lesson-continuous-track: #374151;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > h1 {
  margin: 0 0 18px;
  color: var(--lesson-continuous-ink, #000000);
  font-size: 2.1rem;
  line-height: 1.3;
  font-weight: 760;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > h2 {
  margin: 58px 0 14px;
  padding-top: 8px;
  color: var(--lesson-continuous-ink, #000000);
  font-size: 1.48rem;
  line-height: 1.45;
  font-weight: 760;
  scroll-margin-top: 112px;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > hr {
  margin: 0 0 26px;
  border: 0;
  border-top: 2px solid var(--lesson-continuous-line, #d1d5db);
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > p,
#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > li,
#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > ul {
  color: var(--lesson-continuous-ink, #000000);
  font-size: 1rem;
  line-height: 1.95;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > p {
  margin: 0 0 18px;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > ul {
  margin: 0 0 22px;
  padding-left: 1.3em;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document strong {
  color: #2563eb;
  font-weight: 760;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document .math-block {
  width: 100%;
  margin: 28px 0;
  padding: 14px 10px;
  overflow-x: auto;
  color: var(--lesson-continuous-ink, #000000);
  background: var(--lesson-continuous-surface, #ffffff);
  border-left: 3px solid #2563eb;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document .lesson-figure,
#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document figure {
  margin: 30px 0;
  text-align: center;
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--lesson-continuous-line, #d1d5db);
  border-radius: 4px;
  background: var(--lesson-continuous-page, #ffffff);
}

#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document figcaption,
#learnView #learnBody.lesson-continuous-mode .lesson-continuous-document .lesson-figure-description {
  margin: 8px auto 0;
  color: #64748b;
  font-size: 0.86rem;
  line-height: 1.65;
}

@media (max-width: 700px) {
  #learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress {
    padding: 6px 16px 5px;
  }

  #learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-topline {
    align-items: center;
    gap: 6px;
  }

  #learnView #learnBody.lesson-continuous-mode .lesson-continuous-document {
    padding: 28px 18px 72px;
  }

  #learnView #learnBody.lesson-continuous-mode .lesson-continuous-document > h2 {
    margin-top: 44px;
  }
}

@media (prefers-reduced-motion: reduce) {
  #learnView #learnBody.lesson-continuous-mode .lesson-continuous-progress-bar {
    transition: none;
  }
}