@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@400;500;600&family=Noto+Sans+SC:wght@400;500;600&family=Noto+Serif+SC:wght@400;500;600&display=swap');

:root {
  --paper: #F0EEE6;
  --paper-deep: #E7E2D8;
  --ink: #20201f;
  --muted: #625f59;
  --line: rgba(32, 32, 31, 0.2);
  --accent: #8c3028;
  --accent-soft: #f0d7d2;
  --earth-brown: #805030;
  --chapter-navy: #243450;
  --navy: #243550;
  --success: #285c45;
  --error: #7a2e2e;
  --white: #fffdf8;
  --content: 1180px;
  --radius-large: 8px;
  --radius-button: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans SC", "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--paper);
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; background: var(--paper); color: var(--ink); }
a { color: inherit; }
button, input { font: inherit; }
button { color: inherit; }
img, svg { max-width: 100%; }
::selection { background: var(--accent); color: var(--white); }

:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: 4px;
}

.skip-link {
  position: fixed;
  top: 8px;
  left: 8px;
  z-index: 100;
  padding: 10px 14px;
  background: var(--ink);
  color: var(--white);
  transform: translateY(-150%);
}
.skip-link:focus { transform: translateY(0); }

.site-nav {
  min-height: 74px;
  padding: 0 max(24px, calc((100vw - var(--content)) / 2));
  border-bottom: 1px solid var(--line);
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  align-items: center;
  gap: 20px;
  background: rgba(243, 240, 232, 0.96);
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(10px);
}

.brand {
  justify-self: start;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  font-weight: 700;
}
.brand-name {
  color: var(--navy);
  font-family: "Cormorant Garamond", Georgia, serif;
  font-size: 1.42rem;
  font-weight: 500;
  line-height: 1;
  letter-spacing: .005em;
}
.nav-context {
  justify-self: center;
  color: var(--muted);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav-action {
  justify-self: end;
  border: 1px solid var(--ink);
  border-radius: var(--radius-button);
  padding: 10px 15px;
  text-decoration: none;
  font-size: 0.88rem;
}
.nav-action:hover { background: var(--ink); color: var(--paper); }

.shell { width: min(calc(100% - 48px), var(--content)); margin-inline: auto; }

.home-hero,
.lesson-hero {
  min-height: calc(100svh - 74px);
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: center;
  gap: clamp(44px, 8vw, 110px);
  padding-block: clamp(64px, 9vw, 120px);
}

.eyebrow {
  margin: 0 0 22px;
  color: var(--accent);
  font-size: 0.76rem;
  font-weight: 750;
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.display-title {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(3.8rem, 9vw, 8.4rem);
  line-height: 0.94;
  letter-spacing: -0.055em;
  font-weight: 600;
}
.display-title em { color: var(--accent); font-weight: 400; }
.yet-word { font-family: Georgia, "Noto Serif SC", serif; font-style: italic; font-weight: 400; color: var(--accent); }
.display-title .small-line { display: block; margin-top: 18px; font-size: 0.42em; line-height: 1.25; letter-spacing: -0.02em; }

.lead {
  margin: 30px 0 0;
  max-width: 620px;
  color: var(--muted);
  font-family: Georgia, "Noto Serif SC", "Songti SC", serif;
  font-size: clamp(1.08rem, 1.7vw, 1.35rem);
  line-height: 1.85;
}

.hero-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 38px; }
.button-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 12px 18px;
  border: 1px solid var(--ink);
  border-radius: var(--radius-button);
  text-decoration: none;
  font-weight: 650;
}
.button-link.primary { background: transparent; color: var(--ink); border-color: var(--ink); border-left: 4px solid var(--accent); padding-left: 15px; }
.button-link:hover { transform: translateY(-1px); }

/* The homepage uses the chapter navy as its primary action color; wine stays an accent. */
body[data-page="home"] .button-link.primary {
  background: transparent;
  border-color: var(--ink);
  border-left-color: var(--accent);
  color: var(--ink);
}
body[data-page="home"] .button-link.primary:hover {
  background: var(--paper-deep);
  border-color: var(--ink);
  border-left-color: var(--accent);
}

.hero-model {
  min-height: 500px;
  padding: clamp(28px, 5vw, 64px);
  border: 1px solid var(--line);
  border-radius: var(--radius-large);
  background: var(--paper-deep);
  display: grid;
  align-content: center;
  gap: 30px;
  position: relative;
  overflow: hidden;
}
.hero-model::after {
  content: "";
  width: 280px;
  height: 280px;
  border: 1px solid var(--line);
  border-radius: 50%;
  position: absolute;
  right: -90px;
  top: -100px;
}
.model-label { color: var(--muted); font-size: 0.76rem; letter-spacing: 0.1em; text-transform: uppercase; }
.model-statement {
  margin: 0;
  font-family: Georgia, "Noto Serif SC", serif;
  font-size: clamp(2rem, 4.4vw, 4rem);
  line-height: 1.25;
  letter-spacing: -0.035em;
}
.model-statement strong { color: var(--accent); font-weight: 500; }
.model-flow { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 16px; }
.model-node {
  min-height: 120px;
  padding: 20px;
  border: 1px solid var(--ink);
  display: grid;
  align-content: center;
  gap: 7px;
}
.model-node b { font: 600 2.5rem Georgia, serif; }
.model-node small { color: var(--muted); line-height: 1.5; }
.model-arrow { color: var(--accent); font-size: 1.8rem; }

.manifesto {
  padding-block: clamp(54px, 7vw, 92px);
  background: var(--chapter-navy);
  color: var(--paper);
}
.manifesto .shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 50px;
  align-items: end;
}
.manifesto h2 {
  margin: 0;
  font: 600 clamp(2.3rem, 5vw, 4.8rem)/1.18 Georgia, "Noto Serif SC", serif;
}
.manifesto p { margin: 0; color: rgba(255,255,255,.72); font-size: 1.05rem; line-height: 1.85; }

.learning-section { padding-block: clamp(78px, 10vw, 132px); }
.learning-section.alt { background: var(--paper-deep); }
.section-grid { display: grid; grid-template-columns: 0.62fr 1.38fr; gap: clamp(46px, 8vw, 110px); }
.section-heading h2 {
  margin: 0;
  font: 600 clamp(2.3rem, 4.8vw, 4.6rem)/1.14 Georgia, "Noto Serif SC", serif;
  letter-spacing: -0.035em;
}
.section-heading p { margin: 20px 0 0; color: var(--muted); line-height: 1.8; }
.section-body { min-width: 0; }
.section-body > :first-child { margin-top: 0; }
.section-body p, .section-body li { font-size: 1.04rem; line-height: 1.85; }
.section-body blockquote {
  margin: 0 0 30px;
  padding: 28px 32px;
  border-left: 5px solid var(--accent);
  background: var(--white);
  font: 600 clamp(1.45rem, 2.7vw, 2.35rem)/1.5 Georgia, "Noto Serif SC", serif;
}

.example-card,
.insight-card,
.persona-card,
.decision-card {
  border: 1px solid var(--line);
  background: var(--white);
  padding: clamp(24px, 4vw, 42px);
}
.card-stack { display: grid; gap: 20px; }
.example-card .sentence { margin: 0 0 18px; font: 600 clamp(1.45rem, 2.4vw, 2.15rem)/1.45 Georgia, serif; }
.example-card .sentence strong { color: var(--accent); font-weight: 500; font-style: italic; }
.example-card p:last-child { margin-bottom: 0; color: var(--muted); }

.steps { display: grid; gap: 0; border-top: 1px solid var(--line); }
.step { display: grid; grid-template-columns: 56px 1fr; gap: 20px; padding: 24px 0; border-bottom: 1px solid var(--line); }
.step span { color: var(--accent); font-weight: 750; }
.step h3 { margin: 0 0 8px; font: 600 1.35rem Georgia, "Noto Serif SC", serif; }
.step p { margin: 0; color: var(--muted); }

.tag-list { display: flex; flex-wrap: wrap; gap: 9px; margin-top: 24px; }
.tag { border: 1px solid var(--line); border-radius: 999px; padding: 8px 13px; font-size: 0.88rem; }
body[data-accent="yet"] .tag { border-color: rgba(140, 48, 40, .62); color: var(--accent); }

/* Personal editorial lesson system: one paper, one accent, one hand-drawn signature. */
body[data-lesson-id="yet"] {
  --paper: #F0EEE6;
  --paper-deep: #E7E2D8;
  --ink: #1A1A1A;
  --muted: #5C5852;
  --line: rgba(26, 26, 26, .18);
  --accent: #8C3028;
  --accent-soft: #E4C8C4;
  --earth-brown: #805030;
  --chapter-navy: #243450;
  --white: #F7F3EA;
  background: var(--paper);
  color: var(--ink);
}
body[data-lesson-id="yet"] .site-nav { background: rgba(240, 238, 230, .96); }
body[data-lesson-id="yet"] .lesson-hero,
body[data-lesson-id="yet"] .learning-section,
body[data-lesson-id="yet"] .learning-section.alt,
body[data-lesson-id="yet"] .persona-section,
body[data-lesson-id="yet"] .practice-section { background: var(--paper); }
body[data-lesson-id="yet"] .hero-model { background: var(--paper-deep); }
body[data-lesson-id="yet"] .hero-model::after { display: none; }
body[data-lesson-id="yet"] .event-line-section .steps {
  padding: clamp(22px, 4vw, 42px);
  background: #DDE8EE;
  border-top: 0;
}
body[data-lesson-id="yet"] .persona-section .section-body {
  padding: clamp(24px, 4vw, 44px);
  background: #DDE7E1;
}
body[data-lesson-id="yet"] .persona-section blockquote { background: rgba(247, 243, 234, .72); }
body[data-lesson-id="yet"] .button-link.primary { color: var(--ink); }
body[data-lesson-id="yet"] .example-card,
body[data-lesson-id="yet"] .insight-card,
body[data-lesson-id="yet"] .persona-card,
body[data-lesson-id="yet"] .decision-card,
body[data-lesson-id="yet"] .scene-panel,
body[data-lesson-id="yet"] .quiz-summary { background: rgba(247, 243, 234, .68); }
body[data-lesson-id="yet"] .knowledge-practice-divider { height: auto; margin: 0; background: var(--paper); }
body[data-lesson-id="yet"] .knowledge-practice-divider .divider-composed { display: block; width: 100%; height: auto; opacity: .74; }

.course-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.course-card {
  min-height: 260px;
  padding: 30px;
  border: 1px solid var(--line);
  background: var(--white);
  text-decoration: none;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.course-card:hover { border-color: var(--accent); transform: translateY(-2px); }
.course-card .course-index { color: var(--accent); font-size: 0.78rem; letter-spacing: .1em; text-transform: uppercase; }
.course-card h3 { margin: auto 0 0; font: 600 clamp(2rem, 3vw, 3rem)/1.1 Georgia, serif; }
.course-card p { margin: 0; color: var(--muted); line-height: 1.7; }
.course-status { margin-top: 6px; font-size: .82rem; font-weight: 700; }
.course-status[data-state="complete"] { color: var(--success); }

.prereq-row { display: flex; flex-wrap: wrap; gap: 10px; margin: 28px 0; }
.prereq-row a { padding: 9px 13px; border: 1px solid var(--line); border-radius: 999px; text-decoration: none; }

.switcher { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 26px; }
.switcher button { border: 1px solid var(--line); background: transparent; padding: 10px 14px; cursor: pointer; }
.switcher button[aria-selected="true"] { background: var(--accent); color: var(--white); border-color: var(--accent); }
.scene-panel[hidden] { display: none; }
.scene-panel { border: 1px solid var(--line); background: var(--white); padding: clamp(26px, 5vw, 54px); }
.scene-panel h3 { margin: 0 0 15px; font: 600 clamp(1.8rem, 3.5vw, 3.3rem)/1.2 Georgia, "Noto Serif SC", serif; }
.scene-panel .sentence { margin: 25px 0; font: 600 clamp(1.4rem, 2.4vw, 2.1rem)/1.5 Georgia, serif; }
.scene-panel strong { color: var(--accent); }

.practice-section { background: var(--paper); }
.cat-signature { display: none; }
.knowledge-practice-divider { display: block; position: relative; margin: 0 16px; background: transparent; overflow: hidden; }
.knowledge-practice-divider .divider-composed { display: block; width: 100%; height: auto; }
.practice-intro { margin-bottom: 46px; }
.practice-intro p { max-width: 760px; color: var(--muted); line-height: 1.8; }
.quiz-list { border-top: 1px solid var(--ink); }
.quiz-card { padding: 38px 0; border-bottom: 1px solid var(--line); }
.quiz-meta { margin: 0 0 12px; color: var(--accent); font-size: .78rem; font-weight: 750; letter-spacing: .09em; text-transform: uppercase; }
.quiz-card h3 { margin: 0 0 10px; font: 600 clamp(1.35rem, 2.5vw, 2.1rem)/1.45 Georgia, "Noto Serif SC", serif; }
.quiz-card h3 .yet-word { font-size: .96em; }
.quiz-prompt { margin: 0 0 24px; color: var(--muted); line-height: 1.7; }
.choices { display: flex; flex-wrap: wrap; gap: 10px; }
.choices button {
  min-height: 48px;
  padding: 12px 17px;
  border: 1px solid var(--ink);
  background: transparent;
  cursor: pointer;
  text-align: left;
}
.choices button:hover { background: var(--paper); }
.choices button.selected { box-shadow: inset 0 0 0 2px var(--ink); }
.choices button.correct { background: var(--success); border-color: var(--success); color: white; }
.choices button.wrong { background: var(--error); border-color: var(--error); color: white; }
.quiz-feedback { min-height: 28px; margin: 18px 0 0; font-weight: 600; line-height: 1.7; }
.quiz-feedback.correct { color: var(--success); }
.quiz-feedback.wrong { color: var(--error); }

.quiz-summary {
  margin-top: 42px;
  padding: 28px;
  border: 1px solid var(--line);
  background: var(--white);
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}
.summary-item span { display: block; color: var(--muted); font-size: .82rem; }
.summary-item strong { display: block; margin-top: 6px; font: 600 2rem Georgia, serif; }
.diagnosis { grid-column: 1 / -1; margin: 0; padding-top: 18px; border-top: 1px solid var(--line); line-height: 1.7; }

.lesson-pagination { padding-block: 44px; border-top: 1px solid var(--line); }
.lesson-pagination .shell { display: flex; justify-content: space-between; gap: 20px; }
.lesson-pagination a { text-decoration: none; font-weight: 700; }

.site-footer { padding-block: 46px; background: var(--chapter-navy); color: var(--paper); }
.site-footer .shell { display: flex; justify-content: space-between; gap: 30px; align-items: end; }
.site-footer p { margin: 0; color: rgba(255,255,255,.68); line-height: 1.6; }
.source-ref { font-size: .78rem; max-width: 620px; }

[data-accent="yet"],
[data-accent="still"],
[data-accent="nevertheless"],
[data-accent="however"],
[data-accent="comparison"] { --accent: #8C3028; --accent-soft: #E4C8C4; --earth-brown: #805030; }

/* Shared lesson language: consistent paper, personal accent, focused study blocks. */
body[data-page="lesson"] {
  --paper: #F0EEE6;
  --paper-deep: #E7E2D8;
  --ink: #1A1A1A;
  --muted: #5C5852;
  --line: rgba(26, 26, 26, .18);
  --accent: #8C3028;
  --accent-soft: #E4C8C4;
  --earth-brown: #805030;
  --white: #F7F3EA;
  background: var(--paper);
  color: var(--ink);
}
body[data-page="lesson"] .site-nav { background: rgba(240, 238, 230, .96); }
body[data-page="lesson"] .lesson-hero,
body[data-page="lesson"] .learning-section,
body[data-page="lesson"] .learning-section.alt,
body[data-page="lesson"] .persona-section,
body[data-page="lesson"] .practice-section { background: var(--paper); }
body[data-page="lesson"] .hero-model { background: var(--paper-deep); }
body[data-page="lesson"] .hero-model::after { display: none; }
body[data-page="lesson"] .button-link.primary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
  border-left: 4px solid var(--accent);
  padding-left: 15px;
}
body[data-page="lesson"] .site-footer,
body[data-page="comparison"] .site-footer { background: var(--chapter-navy); color: var(--paper); }
body[data-page="lesson"] .choices button.correct,
body[data-page="comparison"] .choices button.correct { background: var(--chapter-navy); border-color: var(--chapter-navy); color: var(--paper); }
body[data-page="lesson"] .choices button.wrong,
body[data-page="comparison"] .choices button.wrong { background: var(--accent-soft); border-color: var(--accent); color: var(--ink); }
body[data-page="lesson"] .manifesto,
body[data-page="comparison"] .manifesto {
  background: var(--paper);
  color: var(--ink);
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}
body[data-page="lesson"] .manifesto p,
body[data-page="comparison"] .manifesto p { color: var(--muted); }
body[data-page="lesson"] .learning-section.alt:has(.steps),
body[data-page="comparison"] .learning-section:has(.steps) {
  background: var(--chapter-navy);
  color: #F7F3EA;
}
body[data-page="lesson"] .learning-section.alt:has(.steps) .section-heading h2,
body[data-page="comparison"] .learning-section:has(.steps) .section-heading h2,
body[data-page="lesson"] .learning-section.alt:has(.steps) .step h3,
body[data-page="comparison"] .learning-section:has(.steps) .step h3 { color: #F7F3EA; }
body[data-page="lesson"] .learning-section.alt:has(.steps) .eyebrow,
body[data-page="comparison"] .learning-section:has(.steps) .eyebrow,
body[data-page="lesson"] .learning-section.alt:has(.steps) .step span,
body[data-page="comparison"] .learning-section:has(.steps) .step span { color: #E0A39A; }
body[data-page="lesson"] .learning-section.alt:has(.steps) .steps,
body[data-page="comparison"] .learning-section:has(.steps) .steps {
  background: rgba(255,255,255,.055);
  border-top: 1px solid rgba(255,255,255,.22);
  border-left: 1px solid rgba(255,255,255,.18);
}
body[data-page="lesson"] .learning-section.alt:has(.steps) .step,
body[data-page="comparison"] .learning-section:has(.steps) .step { border-color: rgba(255,255,255,.2); }
body[data-page="lesson"] .learning-section.alt:has(.steps) .step p,
body[data-page="comparison"] .learning-section:has(.steps) .step p { color: rgba(247,243,234,.72); }
body[data-page="lesson"] .learning-section.alt .steps {
  padding: clamp(22px, 4vw, 42px);
  background: #DDE8EE;
  border-top: 0;
}
body[data-page="lesson"] .learning-section.alt .section-body {
  padding: clamp(24px, 4vw, 44px);
  background: #DDE7E1;
}
body[data-page="lesson"] .learning-section.alt .section-body blockquote { background: rgba(247, 243, 234, .72); }
body[data-page="lesson"] .example-card,
body[data-page="lesson"] .insight-card,
body[data-page="lesson"] .persona-card,
body[data-page="lesson"] .decision-card,
body[data-page="lesson"] .scene-panel,
body[data-page="lesson"] .quiz-summary { background: rgba(247, 243, 234, .68); }
body[data-page="lesson"] .knowledge-practice-divider { height: auto; margin: 0; background: var(--paper); }
body[data-page="lesson"] .knowledge-practice-divider .divider-composed { display: block; width: 100%; height: auto; opacity: .74; }
body[data-lesson-id="still"] .practice-section::before,
body[data-lesson-id="nevertheless"] .practice-section::before,
body[data-lesson-id="however"] .practice-section::before,
body[data-lesson-id="contrast-words"] .practice-section::before {
  content: "";
  display: block;
  width: 100%;
  aspect-ratio: 1600 / 203;
  margin-top: calc(-1 * clamp(78px, 10vw, 132px));
  margin-bottom: clamp(58px, 8vw, 100px);
  background: url("../previews/assets/yet-divider-composed-simplified-clean.png?v=horizon-1") center / 100% auto no-repeat;
  opacity: .74;
}
body[data-page="comparison"] {
  --paper: #F0EEE6;
  --paper-deep: #E7E2D8;
  --ink: #1A1A1A;
  --muted: #5C5852;
  --line: rgba(26, 26, 26, .18);
  --accent: #8C3028;
  --accent-soft: #E4C8C4;
  --earth-brown: #805030;
  --white: #F7F3EA;
  background: var(--paper);
  color: var(--ink);
}
body[data-page="comparison"] .site-nav,
body[data-page="comparison"] .lesson-hero,
body[data-page="comparison"] .learning-section,
body[data-page="comparison"] .learning-section.alt,
body[data-page="comparison"] .practice-section { background: var(--paper); }
body[data-page="comparison"] .hero-model { background: var(--paper-deep); }
body[data-page="comparison"] .hero-model::after { display: none; }
body[data-page="comparison"] .button-link.primary {
  background: transparent;
  color: var(--ink);
  border-color: var(--ink);
  border-left: 4px solid var(--accent);
  padding-left: 15px;
}
body[data-page="comparison"] .learning-section.alt .section-body {
  padding: clamp(24px, 4vw, 44px);
  background: #DDE7E1;
}
body[data-page="comparison"] .learning-section.alt .steps {
  padding: clamp(22px, 4vw, 42px);
  background: #DDE8EE;
  border-top: 0;
}

@media (max-width: 900px) {
  .site-nav { grid-template-columns: 1fr auto; }
  .nav-context { display: none; }
  .home-hero, .lesson-hero, .section-grid, .manifesto .shell { grid-template-columns: 1fr; }
  .hero-model { min-height: 420px; }
  .course-grid { grid-template-columns: 1fr; }
  .quiz-summary { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 560px) {
  .shell { width: min(calc(100% - 32px), var(--content)); }
  .site-nav { padding-inline: 16px; }
  .brand-name { font-size: .92rem; }
  .nav-action { padding: 9px 11px; font-size: .78rem; }
  .home-hero, .lesson-hero { min-height: auto; padding-block: 64px; }
  .display-title { font-size: clamp(3.3rem, 19vw, 5.8rem); }
  .hero-model { min-height: 360px; padding: 24px; }
  .model-flow { grid-template-columns: 1fr; }
  .model-arrow { transform: rotate(90deg); justify-self: center; }
  .learning-section { padding-block: 76px; }
  .section-body blockquote { padding: 22px; }
  .choices { flex-direction: column; }
  .choices button { width: 100%; }
  .quiz-summary { grid-template-columns: 1fr; }
  .diagnosis { grid-column: 1; }
  .lesson-hero, .event-line-section, .persona-section, .practice-section { position: relative; }
  .cat-signature { display: block; position: absolute; width: 52px; height: 52px; object-fit: contain; opacity: .42; pointer-events: none; }
  .hero-model { padding-bottom: 170px; }
  .hero-model::before { content: ""; position: absolute; left: 24px; right: 24px; bottom: 26px; border-bottom: 1px solid rgba(32,32,31,.28); }
  .cat-signature-hero { right: 14px; bottom: 32px; width: 158px; height: 158px; opacity: .58; transform: rotate(-3deg); z-index: 1; }
  .cat-signature-event { right: 15px; bottom: 22px; filter: invert(1); opacity: .3; transform: rotate(5deg); }
  .cat-signature-persona { left: 12px; top: 19px; opacity: .34; transform: rotate(-7deg); }
  .cat-signature-practice { right: 14px; top: 23px; opacity: .36; }
  .knowledge-practice-divider { display: block; position: relative; margin: 0; height: auto; background: var(--paper); overflow: hidden; }
  .divider-composed { display: block; width: 100%; height: auto; opacity: .74; }
  .lesson-pagination .shell, .site-footer .shell { flex-direction: column; align-items: flex-start; }
}

/* Grammar warnings are called out as annotations, never crossed out. */
body[data-page="lesson"] s,
body[data-page="comparison"] s {
  display: inline-block;
  padding: .28em .55em;
  color: var(--chapter-navy);
  text-decoration: none !important;
  text-decoration-line: none !important;
  border-left: 2px solid var(--accent);
  background: rgba(228, 200, 196, .42);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition: none !important; animation: none !important; }
}

/* Unified lesson modules: the frame stays consistent while each lesson supplies its own copy. */
body[data-page="lesson"] .learning-section:has(.steps),
body[data-page="comparison"] .learning-section:has(.steps) {
  background: var(--chapter-navy);
  color: var(--paper);
}

body[data-page="lesson"] .learning-section:has(.steps) .steps,
body[data-page="comparison"] .learning-section:has(.steps) .steps {
  min-width: 0;
  padding: clamp(18px, 3.5vw, 34px) clamp(16px, 3vw, 30px);
  border: 1px solid rgba(247,243,234,.22);
  background: rgba(247,243,234,.08);
}

body[data-page="lesson"] .learning-section:has(.steps) .step,
body[data-page="comparison"] .learning-section:has(.steps) .step {
  grid-template-columns: 48px minmax(0, 1fr);
  gap: clamp(14px, 2.5vw, 24px);
  min-width: 0;
  padding: clamp(20px, 3vw, 30px) 10px;
  border-color: rgba(247,243,234,.2);
}

body[data-page="lesson"] .learning-section:has(.steps) .step > div,
body[data-page="comparison"] .learning-section:has(.steps) .step > div {
  min-width: 0;
}

body[data-page="lesson"] .learning-section:has(.steps) .step span,
body[data-page="comparison"] .learning-section:has(.steps) .step span {
  padding-left: 2px;
  color: var(--wine-on-dark, #E0A39A);
}

body[data-page="lesson"] .learning-section:has(.steps) .step h3,
body[data-page="comparison"] .learning-section:has(.steps) .step h3 { color: var(--paper); }

body[data-page="lesson"] .learning-section:has(.steps) .step p,
body[data-page="comparison"] .learning-section:has(.steps) .step p {
  color: rgba(247,243,234,.78);
  overflow-wrap: anywhere;
}

/* Pale accent cards use dark navy ink; white on mint is intentionally avoided for readability. */
body[data-page="lesson"] .learning-section.alt .section-body,
body[data-page="comparison"] .learning-section.alt .section-body {
  color: var(--chapter-navy);
  border: 1px solid rgba(36,52,80,.14);
}
body[data-page="lesson"] .learning-section.alt .section-body h3,
body[data-page="lesson"] .learning-section.alt .section-body p,
body[data-page="lesson"] .learning-section.alt .section-body li,
body[data-page="comparison"] .learning-section.alt .section-body h3,
body[data-page="comparison"] .learning-section.alt .section-body p,
body[data-page="comparison"] .learning-section.alt .section-body li {
  color: var(--chapter-navy);
}
body[data-page="lesson"] .learning-section.alt .section-body .eyebrow,
body[data-page="comparison"] .learning-section.alt .section-body .eyebrow { color: var(--accent); }
body[data-page="lesson"] .learning-section.alt .section-body blockquote,
body[data-page="comparison"] .learning-section.alt .section-body blockquote {
  color: var(--chapter-navy);
  background: rgba(247,243,234,.72);
  border-left-color: var(--accent);
}

body[data-page="lesson"] .learning-section.alt .section-body:has(.steps) .steps,
body[data-page="comparison"] .learning-section.alt .section-body:has(.steps) .steps {
  background: rgba(36,52,80,.07);
  border-color: rgba(36,52,80,.18);
}
body[data-page="lesson"] .learning-section.alt .section-body:has(.steps) .step,
body[data-page="comparison"] .learning-section.alt .section-body:has(.steps) .step {
  border-color: rgba(36,52,80,.18);
}
body[data-page="lesson"] .learning-section.alt .section-body:has(.steps) .step h3,
body[data-page="comparison"] .learning-section.alt .section-body:has(.steps) .step h3 { color: var(--chapter-navy); }
body[data-page="lesson"] .learning-section.alt .section-body:has(.steps) .step p,
body[data-page="comparison"] .learning-section.alt .section-body:has(.steps) .step p { color: rgba(36,52,80,.72); }
body[data-page="lesson"] .learning-section.alt .section-body:has(.steps) .step span,
body[data-page="comparison"] .learning-section.alt .section-body:has(.steps) .step span { color: var(--accent); }

/* Replace the distracting strike-through treatment with a quiet editorial cue. */
body[data-page="comparison"] .sentence,
body[data-page="comparison"] .sentence * {
  text-decoration: none !important;
  text-decoration-line: none !important;
}
body[data-page="comparison"] .scene-panel .sentence {
  padding-left: 14px;
  border-left: 2px solid var(--accent);
}

@media (max-width: 560px) {
  body[data-page="lesson"] .learning-section:has(.steps) .steps,
  body[data-page="comparison"] .learning-section:has(.steps) .steps {
    padding: 12px 10px;
  }
  body[data-page="lesson"] .learning-section:has(.steps) .step,
  body[data-page="comparison"] .learning-section:has(.steps) .step {
    grid-template-columns: 44px minmax(0, 1fr);
    gap: 12px;
    padding: 20px 6px;
  }
  body[data-page="lesson"] .learning-section:has(.steps) .step h3,
  body[data-page="comparison"] .learning-section:has(.steps) .step h3 { font-size: 1.2rem; }
  body[data-page="lesson"] .learning-section:has(.steps) .step p,
  body[data-page="comparison"] .learning-section:has(.steps) .step p { font-size: .98rem; line-height: 1.65; }
}