/* Generated by tools/scope_intro_css.js; edit app/intro/styles.css instead. */
[data-intro-scope] {
  --ink: #102a43;
  --muted: #52677b;
  --paper: #fbfcf5;
  --surface: #ffffff;
  --grid: #d6e5f0;
  --cobalt: #2764e7;
  --cobalt-dark: #1647b6;
  --cobalt-soft: #eaf1ff;
  --orange: #ff8a1c;
  --orange-soft: #fff0dc;
  --mint: #31b989;
  --mint-soft: #e4f8f1;
  --violet: #7964d8;
  --violet-soft: #f0edff;
  --red: #ca4141;
  --red-soft: #fff0f0;
  --shadow: 0 14px 36px rgba(16, 42, 67, 0.12);
  --radius: 22px;
  --font-display: "Yu Gothic UI", "Meiryo", sans-serif;
  --font-body: "BIZ UDPGothic", "Yu Gothic UI", "Meiryo", sans-serif;
}

[data-intro-scope] *, [data-intro-scope] *::before, [data-intro-scope] *::after { box-sizing: border-box; }
[data-intro-scope] { scroll-behavior: smooth; }
[data-intro-scope] {
  margin: 0;
  min-width: 320px;
  color: var(--ink);
  background-color: var(--paper);
  background-image:
    linear-gradient(rgba(39, 100, 231, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(39, 100, 231, 0.035) 1px, transparent 1px);
  background-size: 28px 28px;
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}
[data-intro-scope] button, [data-intro-scope] select, [data-intro-scope] input, [data-intro-scope] textarea { font: inherit; }
[data-intro-scope] button, [data-intro-scope] select { min-height: 48px; }
[data-intro-scope] button { color: inherit; }
[data-intro-scope] button:not(:disabled), [data-intro-scope] select:not(:disabled) { cursor: pointer; }
[data-intro-scope] button:focus-visible, [data-intro-scope] select:focus-visible, [data-intro-scope] input:focus-visible, [data-intro-scope] textarea:focus-visible, [data-intro-scope] a:focus-visible {
  outline: 4px solid var(--orange);
  outline-offset: 3px;
}
[data-intro-scope] button:disabled { cursor: not-allowed; opacity: 0.48; }
[data-intro-scope] [hidden] { display: none !important; }

[data-intro-scope] .skip-link {
  position: fixed;
  z-index: 100;
  top: 8px;
  left: 8px;
  padding: 10px 16px;
  color: white;
  background: var(--ink);
  border-radius: 10px;
  transform: translateY(-150%);
}
[data-intro-scope] .skip-link:focus { transform: none; }

[data-intro-scope] .app-header {
  position: sticky;
  z-index: 20;
  top: 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  min-height: 78px;
  padding: 12px clamp(16px, 4vw, 58px);
  background: rgba(251, 252, 245, 0.96);
  border-bottom: 1px solid var(--grid);
  backdrop-filter: blur(12px);
}
[data-intro-scope] .brand-button {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0;
  background: transparent;
  border: 0;
  text-align: left;
}
[data-intro-scope] .brand-mark {
  display: grid;
  grid-template-columns: repeat(2, 28px);
  gap: 3px;
  padding: 6px;
  color: white;
  background: var(--ink);
  border: 3px solid var(--ink);
  border-radius: 14px;
  box-shadow: 4px 4px 0 var(--orange);
}
[data-intro-scope] .brand-mark span {
  display: grid;
  width: 28px;
  height: 28px;
  place-items: center;
  background: var(--cobalt);
  border-radius: 7px;
  font-weight: 900;
}
[data-intro-scope] .brand-copy { display: grid; line-height: 1.05; }
[data-intro-scope] .brand-copy strong { font: 900 21px/1 var(--font-display); letter-spacing: 0.04em; }
[data-intro-scope] .brand-copy small { margin-top: 5px; color: var(--muted); font-size: 11px; font-weight: 800; letter-spacing: 0.06em; }
[data-intro-scope] .header-tools { display: flex; align-items: center; gap: 10px; }
[data-intro-scope] .grade-picker, [data-intro-scope] .tool-button {
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 50px;
  padding: 6px 12px;
  background: var(--surface);
  border: 2px solid var(--grid);
  border-radius: 14px;
  font-weight: 800;
}
[data-intro-scope] .grade-picker > span { color: var(--muted); font-size: 12px; }
[data-intro-scope] .grade-picker select { min-height: 44px; color: var(--ink); background: transparent; border: 0; font-weight: 900; }
[data-intro-scope] .tool-button[aria-pressed="true"] { color: var(--cobalt-dark); background: var(--cobalt-soft); border-color: var(--cobalt); }
[data-intro-scope] .adult-button { color: #4d3f9a; background: var(--violet-soft); border-color: #c8beff; }

[data-intro-scope] .progress-strip { display: flex; align-items: center; gap: 15px; padding: 8px clamp(16px, 4vw, 58px); background: var(--ink); color: white; }
[data-intro-scope] .progress-copy { min-width: 88px; font-size: 13px; font-weight: 900; }
[data-intro-scope] .progress-track { overflow: hidden; flex: 1; height: 9px; background: rgba(255,255,255,.18); border-radius: 999px; }
[data-intro-scope] .progress-track span { display: block; width: 0; height: 100%; background: var(--orange); border-radius: inherit; transition: width .35s ease; }

[data-intro-scope] .intro-main { width: min(1240px, calc(100% - 32px)); margin: 0 auto; }
[data-intro-scope] .home-screen { padding: clamp(34px, 6vw, 82px) 0 80px; }
[data-intro-scope] .hero { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(380px, .95fr); align-items: center; gap: clamp(36px, 7vw, 92px); min-height: 540px; }
[data-intro-scope] .eyebrow { margin: 0 0 10px; color: var(--cobalt); font-size: 13px; font-weight: 900; letter-spacing: .16em; text-transform: uppercase; }
[data-intro-scope] .hero h1 { margin: 0; font: 900 clamp(42px, 6.3vw, 82px)/1.08 var(--font-display); letter-spacing: -.04em; }
[data-intro-scope] .hero h1 span { display: block; }
[data-intro-scope] .hero-accent { color: var(--cobalt); text-decoration: underline; text-decoration-color: var(--orange); text-decoration-thickness: .12em; text-underline-offset: .13em; }
[data-intro-scope] .hero-lead { max-width: 680px; margin: 28px 0; color: var(--muted); font-size: clamp(17px, 2vw, 21px); font-weight: 700; }
[data-intro-scope] .primary-button, [data-intro-scope] .secondary-button, [data-intro-scope] .back-button, [data-intro-scope] .speak-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  min-height: 54px;
  padding: 12px 20px;
  border-radius: 14px;
  font-weight: 900;
}
[data-intro-scope] .primary-button { color: white; background: var(--cobalt); border: 2px solid var(--cobalt-dark); box-shadow: 0 5px 0 var(--cobalt-dark); }
[data-intro-scope] .primary-button:hover:not(:disabled) { transform: translateY(-2px); box-shadow: 0 7px 0 var(--cobalt-dark); }
[data-intro-scope] .primary-button:active:not(:disabled) { transform: translateY(3px); box-shadow: 0 2px 0 var(--cobalt-dark); }
[data-intro-scope] .hero-start { min-width: 290px; justify-content: space-between; font-size: 18px; }
[data-intro-scope] .privacy-note { margin: 22px 0 0; color: var(--muted); font-size: 13px; font-weight: 700; }

[data-intro-scope] .hero-demo { position: relative; padding: 22px; background: var(--surface); border: 3px solid var(--ink); border-radius: 28px; box-shadow: 12px 12px 0 var(--orange); transform: rotate(1.2deg); }
[data-intro-scope] .demo-caption { margin-bottom: 8px; font-size: 13px; font-weight: 900; }
[data-intro-scope] .demo-rail { display: flex; gap: 8px; padding: 10px; background: var(--cobalt-soft); border-radius: 14px; }
[data-intro-scope] .demo-card { display: grid; width: 56px; height: 56px; place-items: center; color: white; background: var(--cobalt); border: 3px solid var(--cobalt-dark); border-radius: 12px; font-size: 29px; font-weight: 900; }
[data-intro-scope] .demo-card.is-active { background: var(--orange); border-color: #bd5c00; transform: translateY(-5px); }
[data-intro-scope] .demo-board {
  position: relative;
  aspect-ratio: 1.2;
  margin-top: 14px;
  overflow: hidden;
  background-color: #f8fbff;
  background-image: linear-gradient(var(--grid) 2px, transparent 2px), linear-gradient(90deg, var(--grid) 2px, transparent 2px);
  background-size: 25% 25%;
  border: 3px solid var(--ink);
  border-radius: 16px;
}
[data-intro-scope] .demo-start, [data-intro-scope] .demo-goal { position: absolute; z-index: 2; font-size: 12px; font-weight: 900; }
[data-intro-scope] .demo-start { bottom: 5%; left: 3%; }
[data-intro-scope] .demo-goal { top: 26%; left: 57%; color: var(--orange); font-size: 34px; }
[data-intro-scope] .demo-robot, [data-intro-scope] .robot-token {
  position: absolute;
  display: grid;
  width: 58px;
  height: 58px;
  place-items: center;
  background: var(--mint);
  border: 4px solid var(--ink);
  border-radius: 16px 16px 21px 21px;
  transition: transform .36s cubic-bezier(.2,.8,.2,1), left .36s, top .36s;
}
[data-intro-scope] .demo-robot { bottom: 7%; left: 7%; animation: demo-move 4s steps(1, end) infinite; }
[data-intro-scope] .demo-robot::before, [data-intro-scope] .robot-token::before { content: "•  •"; padding-bottom: 8px; font-size: 22px; letter-spacing: 5px; }
[data-intro-scope] .demo-robot::after, [data-intro-scope] .robot-token::after { content: ""; position: absolute; bottom: 11px; width: 22px; height: 5px; background: var(--ink); border-radius: 3px; }
[data-intro-scope] .hero-demo > p { margin: 12px 2px 0; color: var(--muted); font-size: 13px; font-weight: 800; }

[data-intro-scope] .learning-loop { display: grid; grid-template-columns: repeat(3, 1fr); gap: 0; margin: 36px 0 86px; padding: 0; list-style: none; background: var(--ink); border-radius: 18px; box-shadow: var(--shadow); }
[data-intro-scope] .learning-loop li { position: relative; display: grid; grid-template-columns: auto 1fr; align-items: center; gap: 0 12px; min-height: 100px; padding: 18px 26px; color: white; }
[data-intro-scope] .learning-loop li + li { border-left: 1px solid rgba(255,255,255,.22); }
[data-intro-scope] .learning-loop li > span { grid-row: 1 / 3; display: grid; width: 46px; height: 46px; place-items: center; color: var(--ink); background: var(--orange); border-radius: 50%; font-weight: 900; }
[data-intro-scope] .learning-loop strong { font-size: 19px; }
[data-intro-scope] .learning-loop small { color: #b9cde0; font-weight: 700; }

[data-intro-scope] .lesson-library { scroll-margin-top: 120px; }
[data-intro-scope] .section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 26px; }
[data-intro-scope] .section-heading h2 { margin: 0; font: 900 clamp(30px, 4vw, 48px)/1.2 var(--font-display); letter-spacing: -.03em; }
[data-intro-scope] .section-heading > p { margin: 0; color: var(--muted); font-size: 14px; font-weight: 700; text-align: right; }
[data-intro-scope] .lesson-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 16px; }
[data-intro-scope] .lesson-card { position: relative; min-height: 205px; padding: 20px; overflow: hidden; background: var(--surface); border: 2px solid var(--grid); border-radius: 18px; text-align: left; transition: transform .18s, border-color .18s, box-shadow .18s; }
[data-intro-scope] .lesson-card:hover { transform: translateY(-4px); border-color: var(--cobalt); box-shadow: var(--shadow); }
[data-intro-scope] .lesson-card.is-complete { background: var(--mint-soft); border-color: var(--mint); }
[data-intro-scope] .lesson-card-number { display: inline-grid; width: 42px; height: 42px; place-items: center; color: white; background: var(--ink); border-radius: 12px; font-size: 18px; font-weight: 900; }
[data-intro-scope] .lesson-card-icon { position: absolute; top: 16px; right: 18px; color: var(--cobalt); font-size: 35px; font-weight: 900; }
[data-intro-scope] .lesson-card-title { display: block; margin: 28px 0 5px; font-size: 19px; line-height: 1.35; }
[data-intro-scope] .lesson-card p { margin: 0; color: var(--muted); font-size: 16px; font-weight: 700; }
[data-intro-scope] .lesson-card-status { position: absolute; right: 16px; bottom: 14px; color: var(--mint); font-weight: 900; }

[data-intro-scope] .lesson-screen { padding: 26px 0 80px; }
[data-intro-scope] .lesson-topline { display: flex; align-items: center; justify-content: space-between; gap: 15px; margin-bottom: 22px; }
[data-intro-scope] .back-button { min-height: 48px; padding: 8px 14px; background: var(--surface); border: 2px solid var(--grid); }
[data-intro-scope] .lesson-grade { padding: 7px 13px; color: var(--cobalt-dark); background: var(--cobalt-soft); border: 2px solid #b6cbff; border-radius: 999px; font-weight: 900; }
[data-intro-scope] .lesson-heading { padding: clamp(22px, 4vw, 42px); background: var(--ink); border-radius: 26px 26px 0 0; color: white; }
[data-intro-scope] .lesson-number { margin: 0 0 6px; color: #a9c5ff; font-size: 14px; font-weight: 900; letter-spacing: .12em; }
[data-intro-scope] .lesson-heading h1 { margin: 0; font: 900 clamp(32px, 5vw, 58px)/1.18 var(--font-display); }
[data-intro-scope] .objective-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; margin-top: 18px; }
[data-intro-scope] .objective-row p { max-width: 850px; margin: 0; color: #dce8f3; font-size: clamp(16px, 2vw, 20px); font-weight: 700; }
[data-intro-scope] .speak-button { flex: none; color: var(--ink); background: var(--orange); border: 2px solid #d36b00; }

[data-intro-scope] .activity-shell { padding: clamp(18px, 4vw, 40px); background: var(--surface); border: 2px solid var(--grid); border-top: 0; border-radius: 0 0 26px 26px; box-shadow: var(--shadow); }
[data-intro-scope] .activity-step { display: grid; grid-template-columns: 52px 1fr; gap: 16px; align-items: start; margin-bottom: 22px; }
[data-intro-scope] .step-number { display: grid; width: 52px; height: 52px; place-items: center; color: white; background: var(--cobalt); border-radius: 15px; font-size: 23px; font-weight: 900; box-shadow: 4px 4px 0 var(--orange); }
[data-intro-scope] .activity-step h2 { margin: 0; font: 900 clamp(23px, 3.2vw, 36px)/1.25 var(--font-display); }
[data-intro-scope] .activity-step p { margin: 4px 0 0; color: var(--muted); font-size: 17px; font-weight: 700; }
[data-intro-scope] .step-speak { min-height: 48px; margin-top: 10px; padding: 8px 14px; background: var(--orange-soft); }
[data-intro-scope] .prediction-row, [data-intro-scope] .choice-row, [data-intro-scope] .run-controls { display: flex; flex-wrap: wrap; gap: 12px; margin: 18px 0 26px; }
[data-intro-scope] .choice-button, [data-intro-scope] .command-button, [data-intro-scope] .match-button, [data-intro-scope] .story-choice, [data-intro-scope] .fix-button {
  min-width: 112px;
  min-height: 60px;
  padding: 11px 17px;
  color: var(--ink);
  background: var(--surface);
  border: 3px solid var(--grid);
  border-radius: 15px;
  font-size: 17px;
  font-weight: 900;
  box-shadow: 0 4px 0 var(--grid);
}
[data-intro-scope] .choice-button:hover, [data-intro-scope] .command-button:hover, [data-intro-scope] .match-button:hover, [data-intro-scope] .story-choice:hover, [data-intro-scope] .fix-button:hover { border-color: var(--cobalt); }
[data-intro-scope] .choice-button.is-selected, [data-intro-scope] .match-button.is-selected, [data-intro-scope] .story-choice.is-selected, [data-intro-scope] .fix-button.is-selected { background: var(--orange-soft); border-color: var(--orange); box-shadow: 0 4px 0 #c96400; }
[data-intro-scope] .choice-button.is-correct, [data-intro-scope] .match-button.is-correct { background: var(--mint-soft); border-color: var(--mint); box-shadow: 0 4px 0 #208463; }
[data-intro-scope] .choice-button.is-wrong, [data-intro-scope] .match-button.is-wrong { background: var(--red-soft); border-color: var(--red); animation: nudge .28s; }

[data-intro-scope] .workbench { display: grid; grid-template-columns: minmax(250px, .68fr) minmax(380px, 1.32fr); gap: 22px; align-items: stretch; }
[data-intro-scope] .command-bench { padding: 18px; background: var(--cobalt-soft); border: 2px solid #b9cdff; border-radius: 18px; }
[data-intro-scope] .bench-label { margin: 0 0 10px; font-size: 18px; font-weight: 900; }
[data-intro-scope] .command-palette { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
[data-intro-scope] .command-button { min-width: 0; color: white; background: var(--cobalt); border-color: var(--cobalt-dark); box-shadow: 0 4px 0 var(--cobalt-dark); font-size: 25px; }
[data-intro-scope] .command-button small { display: block; font-size: 16px; }
[data-intro-scope] .program-rail { min-height: 84px; margin-top: 14px; padding: 10px; background: var(--surface); border: 2px dashed #8aa8e8; border-radius: 14px; }
[data-intro-scope] .program-list { display: flex; flex-wrap: wrap; gap: 8px; min-height: 58px; padding: 0; list-style: none; }
[data-intro-scope] .program-card { display: grid; min-width: 58px; height: 58px; place-items: center; color: white; background: var(--cobalt); border: 3px solid var(--cobalt-dark); border-radius: 12px; font-size: 26px; font-weight: 900; }
[data-intro-scope] .program-card.is-running { background: var(--orange); border-color: #bd5c00; transform: translateY(-5px); box-shadow: 0 7px 0 #bd5c00; }
[data-intro-scope] .empty-program { align-self: center; color: var(--muted); font-size: 16px; font-weight: 800; }
[data-intro-scope] .small-control { min-height: 48px; padding: 9px 13px; background: var(--surface); border: 2px solid var(--grid); border-radius: 12px; font-weight: 900; }

[data-intro-scope] .board-wrap { display: grid; place-items: center; padding: 18px; background: #f5faff; border: 2px solid var(--grid); border-radius: 18px; }
[data-intro-scope] .board-grid { position: relative; width: min(100%, 520px); aspect-ratio: 1; display: grid; grid-template-columns: repeat(4, 1fr); grid-template-rows: repeat(4, 1fr); background: white; border: 4px solid var(--ink); border-radius: 17px; overflow: hidden; }
[data-intro-scope] .board-cell { border-right: 2px solid var(--grid); border-bottom: 2px solid var(--grid); }
[data-intro-scope] .board-label { position: absolute; z-index: 2; padding: 3px 7px; background: white; border-radius: 7px; font-size: 14px; font-weight: 900; }
[data-intro-scope] .board-label.start { bottom: 2%; left: 2%; }
[data-intro-scope] .goal-token { position: absolute; z-index: 3; display: grid; width: 25%; height: 25%; place-items: center; top: 25%; left: 50%; color: var(--orange); font-size: clamp(34px, 6vw, 62px); filter: drop-shadow(0 3px 0 #bd5c00); }
[data-intro-scope] .robot-token { z-index: 5; width: calc(25% - 16px); height: calc(25% - 16px); left: 8px; top: calc(75% + 8px); }
[data-intro-scope] .robot-token.is-success { background: var(--orange); animation: celebrate .5s ease 2; }
[data-intro-scope] .trail-dot { position: absolute; z-index: 1; width: 12px; height: 12px; background: var(--mint); border-radius: 50%; transform: translate(-50%, -50%); opacity: .48; }
[data-intro-scope] .motion-log { width: 100%; margin: 12px 0 0; padding: 10px 14px; color: var(--ink); background: white; border: 2px solid var(--grid); border-radius: 12px; font-size: 17px; font-weight: 900; text-align: center; }
[data-intro-scope] .motion-speak { width: 100%; margin-top: 8px; }
[data-intro-scope] .rule-card { margin: 14px 0; padding: 16px 18px; background: var(--orange-soft); border: 3px solid var(--orange); border-radius: 15px; font-size: 18px; font-weight: 900; }
[data-intro-scope] .mini-step { display: inline-grid; min-width: 34px; min-height: 34px; place-items: center; margin-right: 6px; color: white; background: var(--cobalt); border-radius: 50%; font-weight: 900; }

[data-intro-scope] .feedback-card { display: flex; align-items: flex-start; gap: 14px; margin-top: 24px; padding: 17px 20px; background: var(--cobalt-soft); border: 2px solid #b9cdff; border-radius: 17px; }
[data-intro-scope] .feedback-card.good { background: var(--mint-soft); border-color: var(--mint); }
[data-intro-scope] .feedback-card.try { background: var(--orange-soft); border-color: var(--orange); }
[data-intro-scope] .feedback-icon { display: grid; flex: none; width: 42px; height: 42px; place-items: center; color: white; background: var(--cobalt); border-radius: 50%; font-weight: 900; }
[data-intro-scope] .feedback-card.good .feedback-icon { background: var(--mint); }
[data-intro-scope] .feedback-card.try .feedback-icon { background: var(--orange); }
[data-intro-scope] .feedback-card strong { display: block; font-size: 18px; }
[data-intro-scope] .feedback-card p { margin: 2px 0 0; color: var(--muted); font-weight: 700; }

[data-intro-scope] .compare-table { display: grid; grid-template-columns: auto repeat(4, 1fr); gap: 9px; align-items: center; }
[data-intro-scope] .compare-label { font-weight: 900; }
[data-intro-scope] .compare-card { min-height: 66px; padding: 8px; border: 3px solid var(--grid); border-radius: 13px; background: var(--surface); font-weight: 900; }
[data-intro-scope] .compare-card.is-different { border-color: var(--orange); background: var(--orange-soft); }
[data-intro-scope] .replacement-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 18px; }
[data-intro-scope] .match-board { display: grid; grid-template-columns: 1fr auto 1fr; gap: 16px; align-items: start; }
[data-intro-scope] .match-column { display: grid; gap: 12px; }
[data-intro-scope] .match-arrow { align-self: center; color: var(--orange); font-size: 42px; font-weight: 900; }
[data-intro-scope] .match-button { width: 100%; min-height: 74px; text-align: left; }
[data-intro-scope] .match-lines { display: grid; gap: 8px; margin-top: 16px; }
[data-intro-scope] .match-result { padding: 10px 14px; background: var(--mint-soft); border-left: 5px solid var(--mint); border-radius: 8px; font-weight: 800; }

[data-intro-scope] .repeat-stage, [data-intro-scope] .conditional-stage, [data-intro-scope] .message-stage, [data-intro-scope] .story-stage, [data-intro-scope] .test-stage { padding: 20px; background: #f7faff; border: 2px solid var(--grid); border-radius: 18px; }
[data-intro-scope] .motion-strip { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; min-height: 84px; padding: 12px; background: white; border: 2px solid var(--grid); border-radius: 14px; }
[data-intro-scope] .motion-tile { display: grid; min-width: 72px; height: 60px; place-items: center; color: white; background: var(--cobalt); border: 3px solid var(--cobalt-dark); border-radius: 12px; font-weight: 900; }
[data-intro-scope] .repeat-brace { padding: 12px; border: 4px solid var(--orange); border-radius: 16px; background: var(--orange-soft); }
[data-intro-scope] .repeat-count { display: inline-grid; min-width: 54px; height: 54px; place-items: center; margin-left: 10px; color: white; background: var(--orange); border-radius: 50%; font-size: 20px; font-weight: 900; }
[data-intro-scope] .mini-character { display: inline-grid; width: 58px; height: 58px; place-items: center; background: var(--mint); border: 3px solid var(--ink); border-radius: 50%; font-size: 27px; }
[data-intro-scope] .conditional-lanes { display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px; }
[data-intro-scope] .lane { min-height: 150px; padding: 16px; background: white; border: 3px solid var(--grid); border-radius: 16px; text-align: center; }
[data-intro-scope] .lane strong { display: block; margin-bottom: 12px; }
[data-intro-scope] .lane .star { color: var(--orange); font-size: 44px; }
[data-intro-scope] .lane .motion { display: block; margin-top: 12px; font-weight: 900; }
[data-intro-scope] .actor-row { display: flex; flex-wrap: wrap; justify-content: space-around; gap: 20px; min-height: 175px; align-items: center; }
[data-intro-scope] .actor { position: relative; display: grid; width: 130px; min-height: 130px; place-items: center; padding: 14px; background: white; border: 3px solid var(--grid); border-radius: 50%; font-size: 39px; }
[data-intro-scope] .actor span { display: block; font-size: 16px; font-weight: 900; }
[data-intro-scope] .actor.is-active { border-color: var(--orange); background: var(--orange-soft); animation: hop .45s ease 2; }
[data-intro-scope] .message-envelope { position: absolute; z-index: 4; display: grid; width: 58px; height: 44px; place-items: center; color: white; background: var(--red); border: 3px solid var(--ink); border-radius: 8px; font-weight: 900; transition: left .6s ease, opacity .2s; }

[data-intro-scope] .story-slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 14px; }
[data-intro-scope] .story-slot { min-height: 165px; padding: 14px; color: inherit; background: white; border: 3px dashed #9db0c4; border-radius: 17px; text-align: left; }
[data-intro-scope] .story-slot.is-filled { border-style: solid; border-color: var(--cobalt); background: var(--cobalt-soft); }
[data-intro-scope] .story-slot strong { display: block; margin-bottom: 9px; }
[data-intro-scope] .story-slot .slot-content { font-size: 18px; font-weight: 900; }
[data-intro-scope] .story-choices { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 16px; }
[data-intro-scope] .story-choice { min-width: 0; text-align: left; }
[data-intro-scope] .story-preview { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; margin-top: 18px; padding: 16px; background: var(--mint-soft); border: 2px solid var(--mint); border-radius: 15px; font-size: 16px; font-weight: 900; }
[data-intro-scope] .story-preview span { opacity: 0; transform: translateY(10px); }
[data-intro-scope] .story-preview.is-playing span { animation: story-show .45s ease forwards; }
[data-intro-scope] .story-preview.is-playing span:nth-of-type(2) { animation-delay: .45s; }
[data-intro-scope] .story-preview.is-playing span:nth-of-type(3) { animation-delay: .9s; }
[data-intro-scope] .story-preview.is-playing span:nth-of-type(4) { animation-delay: 1.35s; }
[data-intro-scope] .story-preview.story-static span { opacity: 1; transform: none; }
[data-intro-scope] .story-error { color: var(--red); background: var(--red-soft); border: 2px solid var(--red); border-radius: 10px; padding: 6px 9px; }
[data-intro-scope] .ending-stop { color: var(--cobalt-dark); background: var(--cobalt-soft); border: 2px solid var(--cobalt); border-radius: 10px; padding: 6px 9px; }

[data-intro-scope] .test-track { position: relative; display: grid; grid-template-columns: repeat(5, 1fr); min-height: 120px; background: white; border: 3px solid var(--ink); border-radius: 16px; overflow: hidden; }
[data-intro-scope] .test-cell { border-right: 2px solid var(--grid); }
[data-intro-scope] .test-goal { position: absolute; top: 16px; left: 62%; color: var(--orange); font-size: 42px; }
[data-intro-scope] .test-runner { position: absolute; bottom: 15px; left: 5%; font-size: 42px; transition: left .5s ease; }
[data-intro-scope] .fix-options { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; margin-top: 16px; }
[data-intro-scope] .fix-button { min-width: 0; }

[data-intro-scope] .completion-panel { margin-top: 28px; padding: 24px; color: white; background: var(--ink); border: 4px solid var(--orange); border-radius: 20px; }
[data-intro-scope] .completion-panel h3 { margin: 0 0 5px; font-size: 27px; }
[data-intro-scope] .completion-panel p { margin: 0 0 18px; color: #dce8f3; }
[data-intro-scope] .lesson-nav { display: flex; flex-wrap: wrap; gap: 12px; }
[data-intro-scope] .secondary-button { color: var(--ink); background: white; border: 2px solid var(--grid); }
[data-intro-scope] .danger-button { color: var(--red); border-color: #efb1b1; }

[data-intro-scope] .adult-dialog { width: min(760px, calc(100% - 28px)); max-height: calc(100dvh - 28px); padding: 0; border: 0; border-radius: 24px; box-shadow: 0 25px 80px rgba(16,42,67,.35); }
[data-intro-scope] .adult-dialog::backdrop { background: rgba(16,42,67,.65); backdrop-filter: blur(3px); }
[data-intro-scope] .dialog-frame { display: grid; max-height: calc(100dvh - 28px); }
[data-intro-scope] .dialog-header, [data-intro-scope] .dialog-footer { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 20px 24px; background: var(--violet-soft); }
[data-intro-scope] .dialog-header h2 { margin: 0; font-size: 28px; }
[data-intro-scope] .dialog-close { width: 50px; min-height: 50px; background: white; border: 2px solid #c8beff; border-radius: 50%; font-size: 25px; font-weight: 900; }
[data-intro-scope] .adult-content { overflow: auto; padding: 24px; }
[data-intro-scope] .adult-content section + section { margin-top: 22px; }
[data-intro-scope] .adult-content h3 { margin: 0 0 8px; }
[data-intro-scope] .adult-content p, [data-intro-scope] .adult-content li { color: #304a61; }
[data-intro-scope] .adult-content ul { padding-left: 1.4em; }
[data-intro-scope] .adult-note { padding: 14px 16px; background: var(--orange-soft); border-left: 5px solid var(--orange); border-radius: 10px; }
[data-intro-scope] .dialog-footer { justify-content: flex-end; background: white; border-top: 1px solid var(--grid); }
[data-intro-scope] .toast { position: fixed; z-index: 70; left: 50%; bottom: 24px; max-width: calc(100% - 30px); padding: 13px 20px; color: white; background: var(--ink); border: 3px solid var(--orange); border-radius: 999px; font-weight: 900; opacity: 0; transform: translate(-50%, 20px); pointer-events: none; transition: opacity .2s, transform .2s; }
[data-intro-scope] .toast.is-visible { opacity: 1; transform: translate(-50%, 0); }
[data-intro-scope] .noscript { margin: 20px; padding: 18px; background: var(--red-soft); border: 2px solid var(--red); }

@keyframes demo-move {
  0%, 20% { left: 7%; bottom: 7%; }
  25%, 45% { left: 7%; bottom: 31%; }
  50%, 70% { left: 7%; bottom: 56%; }
  75%, 85% { left: 31%; bottom: 56%; }
  90%, 100% { left: 56%; bottom: 56%; }
}
@keyframes celebrate { 50% { transform: scale(1.16) rotate(8deg); } }
@keyframes nudge { 35% { transform: translateX(-6px); } 70% { transform: translateX(6px); } }
@keyframes hop { 50% { transform: translateY(-14px) rotate(5deg); } }
@keyframes story-show { to { opacity: 1; transform: none; } }

@media (max-width: 950px) {
  [data-intro-scope] .hero { grid-template-columns: 1fr; min-height: 0; }
  [data-intro-scope] .hero-demo { width: min(620px, 100%); margin: 0 auto; transform: none; }
  [data-intro-scope] .lesson-grid { grid-template-columns: repeat(2, 1fr); }
  [data-intro-scope] .workbench { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  [data-intro-scope] .app-header { position: relative; flex-wrap: wrap; gap: 10px; padding: 10px 14px; }
  [data-intro-scope] .brand-copy small { display: none; }
  [data-intro-scope] .header-tools { width: 100%; display: grid; grid-template-columns: 1.15fr 1fr 1fr; }
  [data-intro-scope] .grade-picker, [data-intro-scope] .tool-button { justify-content: center; padding: 6px; font-size: 13px; }
  [data-intro-scope] .grade-picker > span { display: none; }
  [data-intro-scope] .tool-button span:first-child { display: none; }
  [data-intro-scope] .progress-strip { position: sticky; z-index: 18; top: 0; }
  [data-intro-scope] .intro-main { width: min(100% - 20px, 1240px); }
  [data-intro-scope] .home-screen { padding-top: 30px; }
  [data-intro-scope] .hero { gap: 36px; }
  [data-intro-scope] .hero h1 { font-size: clamp(38px, 12vw, 58px); }
  [data-intro-scope] .hero-start { width: 100%; min-width: 0; }
  [data-intro-scope] .learning-loop { grid-template-columns: 1fr; margin-bottom: 60px; }
  [data-intro-scope] .learning-loop li { min-height: 78px; }
  [data-intro-scope] .learning-loop li + li { border-top: 1px solid rgba(255,255,255,.22); border-left: 0; }
  [data-intro-scope] .section-heading { display: block; }
  [data-intro-scope] .section-heading > p { margin-top: 10px; text-align: left; }
  [data-intro-scope] .lesson-grid { grid-template-columns: 1fr; }
  [data-intro-scope] .lesson-card { min-height: 170px; }
  [data-intro-scope] .lesson-heading { border-radius: 19px 19px 0 0; }
  [data-intro-scope] .objective-row { align-items: flex-start; flex-direction: column; }
  [data-intro-scope] .speak-button { width: 100%; }
  [data-intro-scope] .activity-shell { padding: 18px 12px; }
  [data-intro-scope] .activity-step { grid-template-columns: 44px 1fr; gap: 12px; }
  [data-intro-scope] .step-number { width: 44px; height: 44px; }
  [data-intro-scope] .command-palette { grid-template-columns: repeat(2, 1fr); }
  [data-intro-scope] .match-board { grid-template-columns: 1fr; }
  [data-intro-scope] .match-arrow { transform: rotate(90deg); justify-self: center; }
  [data-intro-scope] .conditional-lanes, [data-intro-scope] .story-slots, [data-intro-scope] .story-choices, [data-intro-scope] .fix-options { grid-template-columns: 1fr; }
  [data-intro-scope] .story-preview { display: grid; grid-template-columns: 1fr; }
  [data-intro-scope] .story-preview b { justify-self: center; transform: rotate(90deg); }
  [data-intro-scope] .compare-table { grid-template-columns: auto repeat(4, minmax(56px, 1fr)); overflow-x: auto; }
  [data-intro-scope] .dialog-footer { flex-direction: column-reverse; }
  [data-intro-scope] .dialog-footer button { width: 100%; }
}
@media (max-width: 430px) {
  [data-intro-scope] .brand-mark { grid-template-columns: repeat(2, 23px); }
  [data-intro-scope] .brand-mark span { width: 23px; height: 23px; }
  [data-intro-scope] .brand-copy strong { font-size: 17px; }
  [data-intro-scope] .hero-demo { padding: 14px; box-shadow: 7px 7px 0 var(--orange); }
  [data-intro-scope] .demo-card { width: 48px; height: 48px; }
  [data-intro-scope] .lesson-topline { align-items: stretch; flex-direction: column; }
  [data-intro-scope] .lesson-grade { align-self: flex-start; }
}
@media (prefers-reduced-motion: reduce) {
  [data-intro-scope] *, [data-intro-scope] *::before, [data-intro-scope] *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; animation-iteration-count: 1 !important; transition-duration: .001ms !important; }
  [data-intro-scope] .story-preview span { opacity: 1 !important; transform: none !important; animation: none !important; }
}
@media print {
  [data-intro-scope] .app-header, [data-intro-scope] .progress-strip, [data-intro-scope] .hero-start, [data-intro-scope] .lesson-grid button, [data-intro-scope] .speak-button, [data-intro-scope] .run-controls { display: none !important; }
  [data-intro-scope] { background: white; }
  [data-intro-scope] .intro-main { width: 100%; }
}