:root {
  --purple: #761468;
  --purple-dark: #4a0d43;
  --purple-soft: #f4eaf3;
  --orange: #d66d00;
  --orange-soft: #fff0dc;
  --cyan: #007f96;
  --cyan-soft: #e5f7fa;
  --green: #18754c;
  --green-soft: #e7f5ed;
  --red: #b42318;
  --ink: #201b22;
  --muted: #655d68;
  --line: #ddd6df;
  --surface: #ffffff;
  --surface-soft: #f8f6f8;
  --shadow: 0 16px 40px rgba(59, 27, 55, 0.10);
  --radius: 18px;
  --accent: var(--purple);
  --accent-soft: var(--purple-soft);
  font-family: Inter, Aptos, "Segoe UI", Arial, sans-serif;
  color: var(--ink);
  background: #f4f1f5;
  font-synthesis: none;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { margin: 0; min-width: 320px; font-size: 1rem; line-height: 1.58; background: #f4f1f5; color: var(--ink); }
button, input, select, textarea { font: inherit; }
a { color: var(--purple); }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #ffb000; outline-offset: 3px; }
[hidden] { display: none !important; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.skip-link { position: fixed; z-index: 1000; left: 1rem; top: -5rem; padding: .75rem 1rem; background: #fff; color: var(--purple-dark); border: 2px solid var(--purple); border-radius: 8px; font-weight: 800; }
.skip-link:focus { top: 1rem; }

.site-header, .lesson-header { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 1.5rem; padding: 1rem clamp(1rem, 4vw, 4rem); background: #fff; border-bottom: 1px solid var(--line); }
.brand-lockup { display: flex; align-items: center; gap: 1rem; color: var(--ink); text-decoration: none; }
.brand-lockup img { width: 58px; height: 58px; object-fit: contain; }
.brand-lockup span { display: grid; gap: .15rem; }
.brand-lockup strong { font-size: 1.15rem; line-height: 1.15; }
.brand-lockup small { color: var(--muted); }
.header-meta { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .45rem; }
.header-meta span { padding: .35rem .7rem; border: 1px solid var(--line); border-radius: 999px; color: var(--muted); font-size: .85rem; font-weight: 700; }

main { width: min(1500px, 100%); margin: 0 auto; }
.course-intro { display: grid; grid-template-columns: minmax(0, 1.55fr) minmax(300px, .65fr); gap: clamp(1.5rem, 4vw, 4rem); padding: clamp(2.5rem, 6vw, 5.5rem) clamp(1rem, 4vw, 4rem) 2.4rem; align-items: end; background: linear-gradient(135deg, #fff 0 63%, var(--purple-soft) 63% 100%); }
.eyebrow { margin: 0 0 .6rem; color: var(--purple); font-size: .78rem; font-weight: 900; letter-spacing: .11em; text-transform: uppercase; }
.course-intro h1 { max-width: 900px; margin: 0; font-size: clamp(2.35rem, 6vw, 5.3rem); line-height: .98; letter-spacing: -.045em; color: var(--purple-dark); }
.intro-copy { max-width: 820px; margin: 1.4rem 0 0; color: #4f4552; font-size: clamp(1.05rem, 1.8vw, 1.3rem); }
.intro-actions { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem 1rem; margin-top: 1.2rem; }
.intro-actions span { color: var(--muted); font-size: .9rem; }
.progress-summary { align-self: stretch; display: flex; flex-direction: column; justify-content: center; padding: 1.5rem; border: 2px solid var(--purple); border-radius: var(--radius); background: #fff; box-shadow: var(--shadow); }
.summary-kicker { color: var(--muted); font-size: .88rem; font-weight: 700; }
.progress-summary > strong { display: block; margin: .35rem 0 .8rem; color: var(--purple-dark); font-size: 1.4rem; }
.progress-summary > strong span { font-size: 2.15rem; }
.progress-summary p { margin: .75rem 0 1.1rem; color: var(--muted); }
.progress-track { width: 100%; height: 9px; overflow: hidden; background: #e8e2e9; border-radius: 999px; }
.progress-track span { display: block; width: 0; height: 100%; background: var(--accent); border-radius: inherit; transition: width .3s ease; }

.button { min-height: 44px; display: inline-flex; align-items: center; justify-content: center; gap: .45rem; padding: .65rem 1rem; border: 2px solid transparent; border-radius: 10px; text-decoration: none; font-weight: 800; cursor: pointer; }
.button:disabled { opacity: .5; cursor: not-allowed; }
.button-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.button-primary:hover { filter: brightness(.92); }
.button-secondary { background: #fff; color: var(--accent); border-color: var(--accent); }
.button-secondary:hover { background: var(--accent-soft); }
.button-small { min-height: 40px; padding: .45rem .78rem; font-size: .9rem; }
.is-complete { background: var(--green-soft); color: var(--green); border-color: var(--green); }

.course-principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; margin: 0 clamp(1rem, 4vw, 4rem); background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.course-principles article { min-height: 130px; display: flex; flex-direction: column; justify-content: center; gap: .35rem; padding: 1.4rem; background: #fff; }
.course-principles strong { font-size: 1.08rem; color: var(--purple-dark); }
.course-principles span { color: var(--muted); }

.course-map { padding: clamp(3rem, 6vw, 5rem) clamp(1rem, 4vw, 4rem); }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 2rem; margin-bottom: 1.4rem; }
.section-heading h2 { margin: 0; color: var(--purple-dark); font-size: clamp(1.8rem, 4vw, 3rem); line-height: 1; }
.section-heading > p { max-width: 520px; margin: 0; color: var(--muted); }
.week-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.week-card { --accent: var(--purple); --accent-soft: var(--purple-soft); min-height: 330px; position: relative; display: flex; flex-direction: column; padding: 1.5rem; overflow: hidden; background: #fff; border: 1px solid var(--line); border-top: 7px solid var(--accent); border-radius: var(--radius); box-shadow: 0 9px 26px rgba(59,27,55,.06); }
.week-card::after { content: attr(data-number); position: absolute; right: -5px; top: 70px; font-size: 9rem; font-weight: 900; line-height: 1; color: var(--accent-soft); pointer-events: none; }
.accent-cyan { --accent: var(--cyan); --accent-soft: var(--cyan-soft); }
.accent-orange { --accent: var(--orange); --accent-soft: var(--orange-soft); }
.accent-green { --accent: var(--green); --accent-soft: var(--green-soft); }
.accent-purple { --accent: var(--purple); --accent-soft: var(--purple-soft); }
.week-card-top { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.week-number { color: var(--accent); font-size: 1.35rem; font-weight: 950; letter-spacing: .08em; }
.phase-pill { padding: .3rem .65rem; background: var(--accent-soft); color: var(--accent); border-radius: 999px; font-size: .78rem; font-weight: 800; }
.week-card h3 { position: relative; z-index: 1; max-width: 75%; margin: 1.2rem 0 .55rem; font-size: clamp(1.45rem, 3vw, 2rem); line-height: 1.05; color: var(--ink); }
.week-card > p { position: relative; z-index: 1; max-width: 78%; margin: 0; color: var(--muted); }
.week-progress { position: relative; z-index: 1; margin: auto 0 .9rem; }
.week-progress > div:last-child { display: flex; justify-content: space-between; gap: 1rem; margin-top: .45rem; color: var(--muted); font-size: .8rem; font-weight: 700; }
.week-card .card-link { position: relative; z-index: 1; display: flex; justify-content: space-between; align-items: center; min-height: 48px; padding: .65rem .8rem; background: var(--accent); color: #fff; border-radius: 9px; text-decoration: none; font-weight: 850; }
.week-card .card-link:hover { filter: brightness(.92); }

.learner-agreement { margin: 0 clamp(1rem, 4vw, 4rem) 4rem; display: grid; grid-template-columns: 1fr 1fr; gap: 2rem; padding: clamp(1.5rem, 4vw, 3rem); background: var(--purple-dark); color: #fff; border-radius: var(--radius); }
.learner-agreement .eyebrow { color: #ffc15c; }
.learner-agreement h2 { margin: 0; font-size: clamp(1.5rem, 3vw, 2.6rem); line-height: 1.05; }
.learner-agreement > p { margin: 0; align-self: center; color: #f1e6ef; font-size: 1.08rem; }

.site-footer { display: flex; justify-content: space-between; flex-wrap: wrap; gap: .75rem 2rem; padding: 1.25rem clamp(1rem, 4vw, 4rem); background: #211d22; color: #ddd4dd; font-size: .8rem; }
.site-footer.compact { margin-top: 2rem; }

/* Lesson */
.lesson-page { --accent: var(--purple); --accent-soft: var(--purple-soft); }
.lesson-page[data-accent="cyan"] { --accent: var(--cyan); --accent-soft: var(--cyan-soft); }
.lesson-page[data-accent="orange"] { --accent: var(--orange); --accent-soft: var(--orange-soft); }
.lesson-page[data-accent="green"] { --accent: var(--green); --accent-soft: var(--green-soft); }
.lesson-header { position: sticky; z-index: 40; top: 0; min-height: 72px; padding-top: .7rem; padding-bottom: .7rem; }
.course-back { min-height: 44px; display: inline-flex; align-items: center; gap: .5rem; color: var(--accent); font-weight: 800; text-decoration: none; }
.lesson-brand { display: flex; align-items: center; gap: .8rem; min-width: 0; }
.lesson-brand span { flex: none; padding: .28rem .62rem; background: var(--accent-soft); color: var(--accent); border-radius: 999px; font-size: .78rem; font-weight: 900; }
.lesson-brand strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lesson-progress-label { display: grid; text-align: right; line-height: 1.1; }
.lesson-progress-label span:first-child { color: var(--accent); font-weight: 900; }
.lesson-progress-label span:last-child { color: var(--muted); font-size: .74rem; }
.lesson-progress-track { position: sticky; z-index: 39; top: 71px; height: 5px; background: #e8e2e9; }
.lesson-progress-track span { display: block; height: 100%; width: 0; background: var(--accent); transition: width .25s ease; }
.lesson-shell { width: min(1500px, 100%); display: grid; grid-template-columns: 340px minmax(0, 1fr); gap: clamp(1rem, 3vw, 2.5rem); padding: 1.5rem clamp(1rem, 3vw, 3rem) 3rem; align-items: start; }
.lesson-map { position: sticky; top: 98px; max-height: calc(100vh - 120px); overflow: auto; padding: 1rem; background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 10px 30px rgba(59,27,55,.06); }
.map-header { display: flex; justify-content: space-between; gap: 1rem; align-items: center; padding: .1rem .25rem .75rem; }
.text-button { min-height: 40px; padding: .25rem .5rem; background: transparent; color: var(--accent); border: 0; font-weight: 800; cursor: pointer; }
.lesson-map ol { display: grid; gap: .35rem; margin: 0; padding: 0; list-style: none; }
.lesson-map li button { width: 100%; min-height: 62px; display: grid; grid-template-columns: 36px minmax(0, 1fr) 22px; gap: .65rem; align-items: center; padding: .6rem; text-align: left; background: transparent; color: var(--ink); border: 1px solid transparent; border-radius: 10px; cursor: pointer; }
.lesson-map li button:hover { background: var(--surface-soft); }
.lesson-map li button.current { background: var(--accent-soft); border-color: var(--accent); }
.nav-step { color: var(--accent); font-size: .82rem; font-weight: 900; }
.lesson-map li button span:nth-child(2) { min-width: 0; display: grid; }
.lesson-map li small { color: var(--muted); font-size: .66rem; font-weight: 800; letter-spacing: .06em; text-transform: uppercase; }
.lesson-map li strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: .88rem; }
.step-state { color: var(--green); font-weight: 950; }
.map-support { display: grid; gap: .25rem; margin-top: 1rem; padding: .8rem; background: var(--surface-soft); border-radius: 10px; }
.map-support strong { color: var(--purple-dark); font-size: .85rem; }
.map-support span { color: var(--muted); font-size: .75rem; }

.lesson-stage { scroll-margin-top: 110px; min-height: 760px; padding: clamp(1.2rem, 3vw, 2.5rem); background: #fff; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: var(--shadow); }
.stage-meta { display: flex; justify-content: space-between; align-items: center; gap: 1rem; color: var(--muted); font-size: .8rem; font-weight: 800; }
.stage-meta span:first-child { padding: .25rem .55rem; background: var(--accent-soft); color: var(--accent); border-radius: 999px; text-transform: uppercase; letter-spacing: .06em; }
.lesson-stage > h1 { margin: 1rem 0 .5rem; color: var(--purple-dark); font-size: clamp(2rem, 5vw, 4rem); line-height: 1; letter-spacing: -.035em; }
.lesson-lead { max-width: 920px; margin: 0; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.25rem); }
.narration-card { display: grid; grid-template-columns: minmax(250px, .8fr) minmax(480px, 1.2fr); gap: 1rem; align-items: center; margin: 1.5rem 0; padding: 1rem; background: var(--surface-soft); border: 1px solid var(--line); border-left: 5px solid var(--accent); border-radius: 12px; }
.narration-heading { display: flex; gap: .75rem; align-items: center; }
.narration-mark { width: 36px; height: 36px; flex: none; display: grid; place-items: center; background: var(--accent); color: #fff; border-radius: 50%; font-size: .75rem; }
.narration-heading h2 { margin: 0; font-size: 1rem; }
.narration-heading p { margin: .1rem 0 0; color: var(--muted); font-size: .78rem; }
.narration-controls { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .5rem; align-items: center; }
.narration-controls label { color: var(--muted); font-size: .78rem; font-weight: 800; }
.narration-controls select { min-height: 40px; max-width: 220px; padding: .4rem .6rem; background: #fff; color: var(--ink); border: 1px solid var(--line); border-radius: 8px; }
.voice-settings { position: relative; }
.voice-settings summary { min-height: 40px; display: flex; align-items: center; padding: .35rem .65rem; background: #fff; color: var(--accent); border: 1px solid var(--accent); border-radius: 8px; font-size: .82rem; font-weight: 800; cursor: pointer; }
.voice-settings[open] select { position: absolute; z-index: 10; right: 0; top: calc(100% + .35rem); width: 260px; max-width: 70vw; box-shadow: var(--shadow); }

.lesson-content { display: grid; gap: 1.25rem; }
.content-heading { margin: .5rem 0 0; color: var(--purple-dark); font-size: 1.25rem; }
.outcome-panel { display: flex; justify-content: space-between; gap: 2rem; align-items: center; padding: clamp(1.2rem, 3vw, 2rem); background: linear-gradient(130deg, var(--accent-soft), #fff); border: 1px solid var(--accent); border-radius: 14px; }
.outcome-panel span { color: var(--accent); font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .07em; }
.outcome-panel h2 { max-width: 820px; margin: .35rem 0 0; font-size: clamp(1.25rem, 3vw, 2rem); line-height: 1.15; }
.outcome-panel > strong { flex: none; padding: .5rem .75rem; background: #fff; color: var(--accent); border-radius: 999px; }
.task-list { display: grid; gap: .55rem; margin: 0; padding: 0; list-style: none; }
.task-list label { min-height: 52px; display: grid; grid-template-columns: 24px 1fr; gap: .75rem; align-items: start; padding: .75rem; background: #fff; border: 1px solid var(--line); border-radius: 10px; cursor: pointer; }
.task-list label:hover { border-color: var(--accent); }
.task-list input { width: 20px; height: 20px; margin-top: .1rem; accent-color: var(--green); }
.task-list input:checked + span { color: var(--muted); text-decoration: line-through; text-decoration-thickness: 1px; }
.download-grid, .file-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: .75rem; }
.download-grid a, .file-grid a { min-height: 100px; display: flex; flex-direction: column; justify-content: center; gap: .25rem; padding: 1rem; background: var(--accent-soft); color: var(--ink); border: 1px solid var(--accent); border-radius: 11px; text-decoration: none; }
.download-grid a:hover, .file-grid a:hover { transform: translateY(-2px); }
.download-grid strong, .file-grid strong { color: var(--accent); }
.download-grid span, .file-grid span { color: var(--muted); font-size: .85rem; }
.solution-panel, .mistake-panel, .stretch-panel { padding: .85rem 1rem; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 10px; }
.solution-panel summary, .mistake-panel summary, .stretch-panel summary { color: var(--purple-dark); font-weight: 850; cursor: pointer; }
.why-card, .coach-note { padding: 1rem 1.2rem; background: var(--orange-soft); border-left: 5px solid var(--orange); border-radius: 10px; }
.why-card p, .coach-note { margin-top: .35rem; }
.route-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
.route-grid article { display: grid; grid-template-columns: 70px 1fr; gap: .2rem .8rem; padding: 1rem; border: 1px solid var(--line); border-radius: 12px; }
.route-grid article > span { grid-row: 1 / 3; color: var(--accent); font-weight: 900; }
.route-grid p { margin: 0; color: var(--muted); }
.outcome-list, .plain-list, .reference-list { margin: 0; padding-left: 1.25rem; }
.outcome-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: .5rem 2rem; }
.outcome-list li::marker, .plain-list li::marker { color: var(--accent); }
.rhythm-strip, .repair-loop { display: flex; flex-wrap: wrap; gap: .6rem; align-items: center; justify-content: center; padding: 1rem; background: var(--purple-dark); color: #fff; border-radius: 11px; font-weight: 800; }
.rhythm-strip span:nth-child(even) { color: #ffc15c; }
.concept-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .8rem; }
.concept-grid article { position: relative; min-height: 190px; padding: 1.2rem; overflow: hidden; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 12px; }
.concept-grid article > span { position: absolute; right: .8rem; top: .4rem; color: var(--accent-soft); font-size: 4rem; font-weight: 950; line-height: 1; }
.concept-grid h2 { position: relative; margin: 1.4rem 0 .5rem; color: var(--accent); font-size: 1.15rem; }
.concept-grid p { position: relative; margin: 0; color: var(--muted); }
.vocab-list { display: grid; grid-template-columns: repeat(2, 1fr); gap: .65rem; margin: 0; }
.vocab-list div { padding: .8rem; border-left: 4px solid var(--accent); background: var(--accent-soft); }
.vocab-list dt { color: var(--accent); font-weight: 900; }
.vocab-list dd { margin: .15rem 0 0; color: var(--muted); }
.goal-card { display: grid; gap: .3rem; padding: 1.2rem; background: var(--accent); color: #fff; border-radius: 12px; }
.goal-card span { color: rgba(255,255,255,.8); font-size: .75rem; font-weight: 900; letter-spacing: .08em; text-transform: uppercase; }
.goal-card strong { font-size: 1.2rem; }
.step-list { display: grid; gap: .65rem; }
.step-list article { display: grid; grid-template-columns: 42px 1fr; gap: .8rem; align-items: center; padding: .75rem; background: #fff; border: 1px solid var(--line); border-radius: 10px; }
.step-list article > span { width: 36px; height: 36px; display: grid; place-items: center; background: var(--accent-soft); color: var(--accent); border-radius: 50%; font-weight: 900; }
.step-list p { margin: 0; }
.checkpoint-banner { display: grid; gap: .25rem; padding: 1rem 1.2rem; background: var(--green-soft); color: #123d2c; border: 1px solid var(--green); border-radius: 11px; }
.checkpoint-banner span { color: var(--green); font-size: .75rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.pause-banner { display: flex; gap: .5rem; flex-wrap: wrap; padding: .8rem 1rem; background: var(--orange); color: #fff; border-radius: 10px; }
.checkpoint-large { padding: clamp(1.3rem, 4vw, 2.4rem); background: var(--green-soft); border: 2px solid var(--green); border-radius: 14px; }
.checkpoint-large > span { color: var(--green); font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .07em; }
.checkpoint-large h2 { margin: .45rem 0; font-size: clamp(1.25rem, 3vw, 2rem); line-height: 1.15; }
.checkpoint-large p { margin: 0; color: #315a49; }
.repair-loop { justify-content: flex-start; background: var(--purple-dark); }
.repair-loop span { padding: .45rem .7rem; background: rgba(255,255,255,.11); border-radius: 8px; }
.challenge-card { padding: clamp(1.3rem, 4vw, 2.4rem); background: linear-gradient(135deg, var(--purple-dark), var(--purple)); color: #fff; border-radius: 14px; }
.challenge-card > span { color: #ffc15c; font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.challenge-card h2 { margin: .45rem 0; font-size: clamp(1.5rem, 4vw, 2.7rem); }
.challenge-card p { max-width: 900px; margin: 0; color: #f4eaf3; }
.quiz-form { display: grid; gap: .9rem; }
.quiz-form fieldset { margin: 0; padding: 1rem; border: 1px solid var(--line); border-radius: 11px; }
.quiz-form legend { padding: 0 .4rem; color: var(--purple-dark); font-weight: 850; }
.quiz-form fieldset label { display: flex; align-items: flex-start; gap: .65rem; min-height: 44px; padding: .5rem; border-radius: 8px; cursor: pointer; }
.quiz-form fieldset label:hover { background: var(--accent-soft); }
.quiz-form input { width: 19px; height: 19px; margin-top: .15rem; accent-color: var(--accent); }
.quiz-feedback { padding: 1rem; background: var(--surface-soft); border-left: 5px solid var(--line); border-radius: 8px; }
.quiz-feedback.warning, .quiz-feedback.review { background: var(--orange-soft); border-color: var(--orange); }
.quiz-feedback.success { background: var(--green-soft); border-color: var(--green); }
.quiz-feedback h2 { margin: 0; }
.quiz-feedback ol { display: grid; gap: .5rem; margin: .8rem 0 0; padding-left: 1.3rem; }
.quiz-feedback li { padding-left: .2rem; }
.quiz-feedback li strong, .quiz-feedback li span { display: block; }
.quiz-feedback li.correct strong { color: var(--green); }
.quiz-feedback li.incorrect strong { color: var(--red); }
.finish-divider { height: 1px; margin: .4rem 0; background: var(--line); }
.finish-panel { padding: 1.4rem; background: var(--purple-dark); color: #fff; border-radius: 12px; }
.finish-panel > span { color: #ffc15c; font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .08em; }
.finish-panel h2 { margin: .4rem 0; }
.finish-panel p { margin: 0; color: #eaddea; }
.file-grid { grid-template-columns: repeat(2, 1fr); }
.next-week { display: flex; gap: 1rem; align-items: center; padding: 1rem; background: var(--cyan-soft); border: 1px solid var(--cyan); border-radius: 10px; }
.next-week span { color: var(--cyan); font-weight: 900; text-transform: uppercase; }
.reference-list { display: flex; flex-wrap: wrap; gap: .5rem 1.5rem; }
.transcript-card { margin-top: 1.2rem; padding: .8rem 1rem; background: var(--surface-soft); border: 1px solid var(--line); border-radius: 10px; }
.transcript-card summary { color: var(--accent); font-weight: 850; cursor: pointer; }
.transcript-card p { max-width: 90ch; color: var(--muted); }
.stage-actions { position: sticky; bottom: 0; display: grid; grid-template-columns: 1fr auto 1fr; gap: .75rem; margin: 1.5rem -0.4rem -0.4rem; padding: .8rem; background: rgba(255,255,255,.97); border: 1px solid var(--line); border-radius: 12px; box-shadow: 0 -8px 24px rgba(59,27,55,.08); backdrop-filter: blur(8px); }
.stage-actions #next-button { justify-self: stretch; }
.stage-actions #previous-button { justify-self: stretch; }

@media (max-width: 1050px) {
  .course-intro { grid-template-columns: 1fr; background: linear-gradient(180deg, #fff 0 75%, var(--purple-soft) 75% 100%); }
  .lesson-shell { grid-template-columns: 290px minmax(0, 1fr); padding-left: 1rem; padding-right: 1rem; }
  .narration-card { grid-template-columns: 1fr; }
  .narration-controls { justify-content: flex-start; }
}

@media (max-width: 800px) {
  .site-header { align-items: flex-start; }
  .header-meta { display: none; }
  .course-principles, .week-grid, .learner-agreement { grid-template-columns: 1fr; }
  .section-heading { display: grid; gap: .75rem; }
  .week-card { min-height: 300px; }
  .lesson-header { display: grid; grid-template-columns: 1fr auto; gap: .35rem 1rem; }
  .lesson-brand { grid-column: 1 / -1; grid-row: 2; }
  .lesson-progress-label { grid-column: 2; grid-row: 1; }
  .lesson-progress-track { top: 108px; }
  .lesson-shell { display: block; }
  .lesson-map { position: static; max-height: none; margin-bottom: 1rem; }
  .map-support { display: none; }
  .lesson-stage { min-height: auto; scroll-margin-top: 125px; }
  .outcome-panel { align-items: flex-start; }
  .download-grid, .route-grid, .concept-grid, .vocab-list, .outcome-list { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  body { font-size: 1rem; }
  .site-header { padding: .8rem 1rem; }
  .brand-lockup img { width: 44px; height: 44px; }
  .brand-lockup strong { font-size: .98rem; }
  .brand-lockup small { display: none; }
  .course-intro { padding-top: 2.3rem; }
  .course-intro h1 { font-size: clamp(2.25rem, 12vw, 3.2rem); }
  .course-principles { margin-top: 1rem; }
  .week-card h3, .week-card > p { max-width: 88%; }
  .site-footer { display: grid; }
  .course-back { font-size: .85rem; }
  .lesson-brand strong { font-size: .92rem; }
  .lesson-shell { padding: .8rem .7rem 2rem; }
  .lesson-map, .lesson-stage { border-radius: 13px; }
  .lesson-stage { padding: 1rem; }
  .lesson-stage > h1 { font-size: 2.1rem; }
  .narration-card { margin: 1rem 0; padding: .8rem; }
  .narration-controls { display: grid; grid-template-columns: repeat(3, 1fr); }
  .narration-controls label { align-self: center; }
  .narration-controls select { width: 100%; }
  .voice-settings { grid-column: span 3; }
  .voice-settings summary { justify-content: center; }
  .voice-settings[open] select { position: static; width: 100%; max-width: none; margin-top: .4rem; }
  .outcome-panel { display: grid; gap: 1rem; }
  .stage-actions { grid-template-columns: 1fr 1fr; bottom: .4rem; }
  .stage-actions #complete-button { grid-column: 1 / -1; grid-row: 1; }
  .file-grid { grid-template-columns: 1fr; }
}

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

@media print {
  .site-header, .lesson-header, .lesson-progress-track, .lesson-map, .narration-card, .stage-actions, .site-footer { display: none !important; }
  body { background: #fff; }
  .lesson-shell { display: block; padding: 0; }
  .lesson-stage { border: 0; box-shadow: none; padding: 0; }
  details { open: true; }
}