:root {
  --navy: #132a3a;
  --navy-2: #20445d;
  --ink: #16232f;
  --muted: #5d6b7a;
  --cream: #f6f0e5;
  --paper: #fffdf9;
  --teal: #00a89b;
  --teal-dark: #007f76;
  --gold: #ffbd3e;
  --line: #dbe3e8;
  --success: #237a57;
  --shadow: 0 18px 50px rgba(19, 42, 58, .12);
  --radius: 22px;
  --max: 1180px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color: var(--ink);
  background: var(--paper);
  line-height: 1.55;
}
button, input, select { font: inherit; }
a { color: inherit; }
.skip-link { position: fixed; left: 12px; top: -60px; z-index: 100; background: white; padding: 10px 14px; border-radius: 8px; }
.skip-link:focus { top: 12px; }

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 max(20px, calc((100vw - var(--max)) / 2));
  background: rgba(255, 253, 248, .94);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(19, 42, 58, .08);
}
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font-weight: 800; }
.brand-mark { display: grid; place-items: center; width: 42px; height: 42px; border-radius: 12px; background: var(--navy); color: white; font-size: 18px; }
.brand-mark span { color: var(--gold); font-size: 9px; display: block; margin-top: -5px; }
.brand-lockup { display: grid; line-height: 1.05; }
.brand-name { letter-spacing: -.02em; }
.brand-lockup small { margin-top: 3px; color: var(--muted); font-size: .62rem; font-weight: 750; letter-spacing: .06em; text-transform: uppercase; }
.brand-tagline { width: fit-content; margin: 18px 0 0; padding: 8px 13px; border-left: 4px solid var(--gold); background: rgba(255,189,62,.12); color: var(--navy); font-weight: 850; }
.main-nav { display: flex; gap: 24px; align-items: center; }
.main-nav a { text-decoration: none; font-size: .93rem; font-weight: 650; color: var(--muted); }
.main-nav a:hover, .main-nav a:focus { color: var(--navy); }
.header-actions { display: flex; align-items: center; gap: 10px; }
.account-button { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; padding: 0 14px; border: 1px solid var(--line); border-radius: 999px; background: white; color: var(--navy); font-weight: 800; cursor: pointer; }
.account-button:hover { border-color: var(--teal); box-shadow: 0 8px 24px rgba(19,42,58,.1); }
.account-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--gold); box-shadow: 0 0 0 4px rgba(255,189,62,.18); }
.account-button.is-signed-in .account-dot { background: var(--teal); box-shadow: 0 0 0 4px rgba(0,168,155,.15); }
.menu-button { display: none; border: 1px solid var(--line); background: white; border-radius: 10px; padding: 8px 12px; }

.auth-dialog { width: min(92vw, 560px); max-height: min(90vh, 760px); padding: 42px; border: 0; border-radius: 28px; color: var(--ink); background: var(--paper); box-shadow: 0 28px 90px rgba(9,29,44,.28); }
.auth-dialog::backdrop { background: rgba(9,29,44,.68); backdrop-filter: blur(5px); }
.dialog-close { position: absolute; top: 14px; right: 16px; width: 38px; height: 38px; border: 0; border-radius: 50%; background: var(--cream); color: var(--navy); font-size: 1.6rem; cursor: pointer; }
.auth-dialog h2 { margin-bottom: 12px; font-size: clamp(2rem, 7vw, 3.1rem); }
.auth-intro { margin: 0 0 24px; color: var(--muted); }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 5px; margin-bottom: 22px; padding: 5px; border-radius: 14px; background: var(--cream); }
.auth-tab { min-height: 42px; border: 0; border-radius: 10px; background: transparent; color: var(--muted); font-weight: 800; cursor: pointer; }
.auth-tab.active { background: white; color: var(--navy); box-shadow: 0 3px 12px rgba(19,42,58,.09); }
.auth-form { display: grid; gap: 15px; }
.auth-form label:not(.consent-field) { display: grid; gap: 6px; color: var(--navy); font-size: .88rem; font-weight: 800; }
.auth-form input { width: 100%; min-height: 48px; padding: 0 14px; border: 1px solid #bdcbd4; border-radius: 11px; background: white; color: var(--ink); }
.auth-form input:focus { outline: 3px solid rgba(0,168,155,.16); border-color: var(--teal); }
.auth-form small, .privacy-note { color: var(--muted); font-size: .76rem; font-weight: 500; }
.consent-field { display: grid; grid-template-columns: 20px 1fr; gap: 10px; align-items: start; color: var(--muted); font-size: .82rem; }
.consent-field input { width: 18px; min-height: 18px; margin-top: 2px; accent-color: var(--teal-dark); }
.privacy-note { margin: -3px 0 0; line-height: 1.45; }
.auth-message { min-height: 24px; margin: 16px 0 0; color: var(--teal-dark); font-weight: 750; }
.auth-message.is-error { color: #a33b32; }
.account-panel { text-align: center; }
.account-monogram { width: 78px; height: 78px; margin: 14px auto 18px; display: grid; place-items: center; border-radius: 24px; background: var(--navy); color: var(--gold); font-size: 2rem; font-weight: 900; }
.account-panel h2 { margin-bottom: 5px; }
.account-panel > p:not(.eyebrow) { color: var(--muted); }
.sync-status { margin: 24px 0; padding: 12px; border-radius: 12px; background: rgba(0,168,155,.09); color: var(--teal-dark) !important; font-weight: 800; }
.sync-status.is-error { background: rgba(163,59,50,.08); color: #a33b32 !important; }
.account-access-status { margin: -12px 0 20px; color: var(--muted); font-size: .9rem; }
.account-panel .button + .button { margin-top: 10px; }

.section { padding: 80px max(22px, calc((100vw - var(--max)) / 2)); }
.hero {
  min-height: 670px;
  display: grid;
  grid-template-columns: 1.2fr .8fr;
  align-items: center;
  gap: 72px;
  background:
    radial-gradient(circle at 80% 20%, rgba(16,166,160,.16), transparent 28%),
    linear-gradient(135deg, var(--cream), var(--paper) 55%);
}
.eyebrow { margin: 0 0 12px; text-transform: uppercase; letter-spacing: .14em; font-size: .76rem; font-weight: 850; color: var(--teal-dark); }
.eyebrow.light { color: #8fe3df; }
h1, h2, h3, h4 { line-height: 1.1; letter-spacing: -.035em; margin-top: 0; }
h1 { font-size: clamp(3rem, 6.5vw, 6.2rem); margin-bottom: 24px; max-width: 860px; }
h1 span { color: var(--teal-dark); }
h2 { font-size: clamp(2.25rem, 4vw, 4.1rem); margin-bottom: 18px; }
h3 { font-size: 1.45rem; }
.hero-lead { font-size: clamp(1.1rem, 2vw, 1.35rem); color: var(--muted); max-width: 720px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin: 32px 0 28px; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: 0 20px; border-radius: 13px; border: 1px solid transparent; text-decoration: none; font-weight: 780; cursor: pointer; }
.button.primary { background: var(--navy); color: white; box-shadow: 0 10px 25px rgba(19,42,58,.18); }
.button.primary:hover { background: var(--navy-2); transform: translateY(-1px); }
.button.secondary { border-color: var(--navy); background: transparent; color: var(--navy); }
.button.text-button { background: transparent; border-color: var(--line); color: var(--muted); }
.trust-line { display: flex; flex-wrap: wrap; gap: 10px 18px; color: var(--muted); font-size: .88rem; }
.trust-line span::before { content: "✓"; color: var(--teal-dark); font-weight: 900; margin-right: 6px; }
.hero-panel { background: var(--navy); color: white; padding: 34px; border-radius: 32px; box-shadow: var(--shadow); }
.panel-kicker { text-align: center; color: #b9d4e8; font-weight: 750; }
.time-ring { width: 156px; height: 156px; margin: 18px auto 30px; border: 12px solid rgba(255,255,255,.12); border-top-color: var(--gold); border-radius: 50%; display: grid; place-content: center; text-align: center; }
.time-ring strong { font-size: 3.5rem; line-height: .9; }
.time-ring span { color: #b9d4e8; }
.timeline { list-style: none; padding: 0; margin: 0; display: grid; gap: 11px; }
.timeline li { border-bottom: 1px solid rgba(255,255,255,.12); padding-bottom: 10px; }
.timeline b { display: inline-block; width: 62px; color: var(--gold); }
.night-note { margin: 22px 0 0; padding: 15px; background: rgba(255,255,255,.08); border-radius: 14px; font-size: .9rem; }
.night-note span { color: var(--gold); font-weight: 800; }

.proof-strip { display: grid; grid-template-columns: repeat(4, 1fr); background: var(--teal-dark); color: white; padding: 26px max(22px, calc((100vw - var(--max)) / 2)); }
.proof-strip div { display: flex; flex-direction: column; border-right: 1px solid rgba(255,255,255,.23); padding: 0 22px; }
.proof-strip div:first-child { padding-left: 0; }
.proof-strip div:last-child { border-right: 0; }
.proof-strip strong { font-size: 2.1rem; }
.proof-strip span { font-size: .86rem; color: #cef0ec; }

.content-section { background: var(--paper); }
.section-heading { max-width: 850px; margin-bottom: 44px; }
.section-heading > p:not(.eyebrow) { color: var(--muted); font-size: 1.1rem; }
.split-heading { max-width: none; display: flex; justify-content: space-between; align-items: end; gap: 24px; }
.split-heading > div:first-child { max-width: 840px; }
.why-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.principle-card { padding: 28px; border: 1px solid var(--line); border-radius: var(--radius); background: white; }
.card-number { display: inline-block; color: var(--teal-dark); font-weight: 900; margin-bottom: 24px; }
.principle-card p { color: var(--muted); margin-bottom: 0; }
.method-panel { margin: 30px 0; padding: 34px; border: 1px solid var(--line); border-radius: 28px; background: linear-gradient(135deg, #ffffff, var(--cream)); }
.method-intro { max-width: 720px; }
.method-intro p:last-child { color: var(--muted); }
.method-steps { display: grid; grid-template-columns: repeat(5, 1fr); gap: 10px; margin-top: 24px; }
.method-steps div { min-height: 132px; padding: 18px 14px; border-radius: 18px; background: white; border: 1px solid var(--line); }
.method-steps strong { display: block; font-size: 2.1rem; color: var(--teal-dark); line-height: 1; margin-bottom: 14px; }
.method-steps span { display: block; color: var(--muted); font-size: .9rem; }
.method-steps b { color: var(--navy); }
.promise-panel { margin: 30px 0; padding: 40px; border-radius: 28px; background: var(--navy); color: white; display: grid; grid-template-columns: 1.2fr .8fr; gap: 48px; }
.promise-panel p:not(.eyebrow) { color: #c7d9e8; }
.check-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 12px; align-content: center; }
.check-list li { position: relative; padding-left: 31px; }
.check-list li::before { content: "✓"; position: absolute; left: 0; top: -2px; width: 22px; height: 22px; display: grid; place-items: center; color: var(--navy); background: var(--gold); border-radius: 50%; font-weight: 900; }
.diagnostic-card { display: grid; grid-template-columns: .75fr 1.25fr; gap: 40px; margin-top: 30px; padding: 36px; border-radius: 28px; background: var(--cream); }
.diagnostic-form { display: grid; gap: 16px; }
.diagnostic-form fieldset { border: 0; padding: 0 0 15px; margin: 0; border-bottom: 1px solid rgba(19,42,58,.12); }
.diagnostic-form legend { font-weight: 800; margin-bottom: 8px; }
.diagnostic-form label { display: block; margin: 6px 0; color: var(--muted); }
.diagnostic-result { grid-column: 1 / -1; padding: 22px; border-radius: 16px; background: white; border-left: 5px solid var(--teal); }
.level-actions { display: flex; gap: 12px; margin-top: 30px; }

.progress-pill { flex: 0 0 auto; padding: 12px 18px; border-radius: 999px; background: var(--cream); font-weight: 800; color: var(--navy); }
.day-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 18px; }
.day-card { position: relative; overflow: hidden; display: grid; grid-template-columns: 90px 1fr; gap: 22px; padding: 26px; border: 1px solid var(--line); border-radius: var(--radius); background: white; text-decoration: none; transition: .2s ease; }
.day-card:hover { transform: translateY(-3px); box-shadow: var(--shadow); border-color: transparent; }
.day-card.is-locked { background: #f4f1e9; border-style: dashed; }
.day-card.is-locked:hover { border-color: var(--gold); box-shadow: 0 16px 42px rgba(19,42,58,.1); }
.day-card.is-locked .day-number { background: #6d7881; }
.lock-badge { position: absolute; top: 16px; right: 16px; padding: 5px 9px; border-radius: 999px; background: rgba(255,189,62,.2); color: #72500c; font-size: .7rem; font-weight: 850; text-transform: uppercase; letter-spacing: .08em; }
.day-number { width: 74px; height: 74px; border-radius: 22px; display: grid; place-content: center; background: var(--navy); color: white; text-align: center; }
.day-number span { font-size: .7rem; text-transform: uppercase; letter-spacing: .1em; color: #b9d4e8; }
.day-number strong { font-size: 1.8rem; }
.day-card h3 { margin-bottom: 8px; }
.day-card p { color: var(--muted); margin: 0 0 14px; }
.day-meta { display: flex; gap: 16px; color: var(--teal-dark); font-size: .85rem; font-weight: 750; }
.day-progress { position: absolute; bottom: 0; left: 0; height: 5px; background: var(--teal); }

.lesson-section { min-height: 80vh; }
.back-link { border: 0; background: transparent; color: var(--teal-dark); font-weight: 800; cursor: pointer; padding: 0; margin-bottom: 28px; }
.lesson-header { display: grid; grid-template-columns: 1fr 300px; gap: 36px; align-items: end; padding-bottom: 30px; border-bottom: 1px solid var(--line); }
.lesson-header p { color: var(--muted); }
.lesson-plan { padding: 22px; background: var(--cream); border-radius: 18px; }
.lesson-plan strong { display: block; font-size: 1.15rem; margin-bottom: 8px; }
.lesson-plan span { display: block; color: var(--muted); font-size: .9rem; }
.pronunciation-tip { margin: 26px 0; padding: 20px 22px; border-left: 5px solid var(--gold); background: #fff8e8; border-radius: 0 15px 15px 0; }
.pronunciation-tip strong { display: block; margin-bottom: 5px; }
.word-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.word-card { padding: 24px; border: 1px solid var(--line); border-radius: 20px; background: white; }
.word-card.is-mastered { border-color: rgba(35,122,87,.45); background: #f4fbf7; }
.word-topline { display: flex; justify-content: space-between; align-items: center; }
.word-index { color: var(--muted); font-size: .78rem; font-weight: 800; }
.audio-button, .mini-button { border: 1px solid var(--line); background: white; border-radius: 999px; padding: 7px 11px; cursor: pointer; color: var(--navy); font-weight: 750; }
.word-title { font-size: 2rem; margin: 16px 0 2px; }
.word-spanish { color: var(--teal-dark); font-weight: 750; margin-top: 0; }
.phrase-box { display: grid; gap: 3px; padding: 15px; border-radius: 13px; background: var(--cream); }
.phrase-spanish { color: var(--muted); font-size: .88rem; }
.word-note { color: var(--muted); font-size: .9rem; min-height: 44px; }
.master-button { width: 100%; min-height: 42px; border: 1px solid var(--navy); border-radius: 11px; background: white; color: var(--navy); cursor: pointer; font-weight: 800; }
.word-card.is-mastered .master-button { background: var(--success); border-color: var(--success); color: white; }
.production-check { margin-top: 28px; padding: 30px; background: var(--navy); color: white; border-radius: 24px; }
.production-check p { color: #c7d9e8; }
.production-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.production-grid div { padding: 16px; background: rgba(255,255,255,.08); border-radius: 14px; }
.lesson-footer-actions { display: flex; justify-content: space-between; gap: 12px; margin-top: 28px; }

.pricing-section { display: grid; grid-template-columns: .8fr 1.2fr; gap: 54px; background: var(--navy); color: white; }
.pricing-intro { align-self: center; }
.pricing-intro > p:not(.eyebrow):not(.billing-status) { color: #c7d9e8; font-size: 1.05rem; }
.billing-status { margin-top: 24px; padding: 14px 16px; border: 1px solid rgba(255,255,255,.2); border-radius: 14px; background: rgba(255,255,255,.08); color: white; font-weight: 780; }
.pricing-options { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.price-card { display: flex; flex-direction: column; min-height: 390px; padding: 28px; border: 1px solid rgba(255,255,255,.18); border-radius: 24px; background: #fffdf9; color: var(--ink); box-shadow: 0 24px 60px rgba(5,18,28,.2); }
.price-card.featured { transform: translateY(-14px); border: 3px solid var(--gold); }
.price-card h3 { margin: 4px 0 8px; font-size: 1.55rem; }
.price-label { width: fit-content; margin: 0; padding: 5px 9px; border-radius: 999px; background: var(--cream); color: var(--teal-dark); font-size: .72rem; font-weight: 850; letter-spacing: .08em; text-transform: uppercase; }
.price { display: flex; align-items: baseline; gap: 8px; margin: 12px 0; }
.price strong { font-size: 3rem; line-height: 1; color: var(--navy); }
.price span { color: var(--muted); font-size: .82rem; font-weight: 750; }
.price-card ul { flex: 1; display: grid; align-content: start; gap: 10px; padding-left: 20px; color: var(--muted); }
.billing-message { grid-column: 1 / -1; min-height: 24px; margin: 0; color: #ffe09a; font-weight: 800; text-align: center; }

.timer { flex: 0 0 auto; display: flex; align-items: center; gap: 10px; padding: 10px 12px 10px 18px; background: var(--navy); color: white; border-radius: 16px; }
.timer span { font-size: 1.5rem; font-weight: 850; font-variant-numeric: tabular-nums; }
.review-controls { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-bottom: 26px; }
.review-controls select { min-height: 48px; min-width: 0; max-width: 100%; padding: 0 38px 0 14px; border: 1px solid var(--line); border-radius: 12px; background: white; }
.review-stage { min-height: 390px; border: 1px dashed #b8c7d1; border-radius: 25px; display: grid; place-items: center; padding: 30px; }
.review-card { width: min(100%, 620px); text-align: center; }
.review-card .prompt-label { color: var(--muted); text-transform: uppercase; letter-spacing: .12em; font-size: .72rem; font-weight: 850; }
.review-card h3 { font-size: clamp(2rem, 6vw, 4rem); margin: 18px 0 8px; }
.review-card .review-instruction { color: var(--muted); }
.review-answer { margin: 24px 0; padding: 22px; background: var(--cream); border-radius: 16px; }
.review-answer strong { display: block; font-size: 1.55rem; }
.review-buttons { display: flex; justify-content: center; gap: 10px; flex-wrap: wrap; }
.empty-state { color: var(--muted); }

.metrics-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 14px; }
.progress-account-note { display: grid; grid-template-columns: auto 1fr auto; gap: 16px; align-items: center; margin: 0 0 24px; padding: 18px 20px; border: 1px solid rgba(0,168,155,.25); border-radius: 18px; background: rgba(0,168,155,.07); }
.progress-account-note > span { width: 42px; height: 42px; display: grid; place-items: center; border-radius: 13px; background: var(--teal); color: white; font-size: 1.3rem; }
.progress-account-note p { margin: 0; color: var(--muted); }
.progress-account-note strong { color: var(--navy); }
.progress-account-note.is-signed-in { border-color: rgba(35,122,87,.2); background: rgba(35,122,87,.07); }
.metric-card { padding: 26px; border: 1px solid var(--line); border-radius: 18px; background: white; }
.metric-card strong { display: block; font-size: 2.4rem; color: var(--teal-dark); }
.metric-card span { color: var(--muted); font-size: .9rem; }
.progress-map { display: grid; grid-template-columns: repeat(10, 1fr); gap: 8px; margin: 32px 0; }
.progress-cell { aspect-ratio: 1; border-radius: 12px; background: var(--cream); display: grid; place-items: center; font-weight: 850; color: var(--muted); }
.progress-cell.complete { background: var(--teal); color: white; }
.progress-cell.locked { opacity: .48; }
.mastery-definition { padding: 30px; background: var(--cream); border-radius: 22px; }
.mastery-definition ol { display: grid; gap: 8px; }

.research-section { background: var(--navy); color: white; display: grid; grid-template-columns: .8fr 1.2fr; gap: 60px; align-items: start; }
.research-section > p { color: #c7d9e8; font-size: 1.05rem; }
.source-links { grid-column: 2; display: flex; flex-wrap: wrap; gap: 10px; }
.source-links a { color: white; border: 1px solid rgba(255,255,255,.25); border-radius: 999px; padding: 8px 12px; text-decoration: none; font-size: .85rem; }
footer { display: flex; justify-content: space-between; gap: 20px; padding: 32px max(22px, calc((100vw - var(--max)) / 2)); background: #0a1d2d; color: #b9cad7; }
footer strong { color: white; }
footer p { margin: 3px 0; font-size: .86rem; }

@media (max-width: 900px) {
  .site-header { height: 64px; }
  .menu-button { display: block; }
  .main-nav { display: none; position: absolute; top: 64px; left: 12px; right: 12px; padding: 16px; border: 1px solid var(--line); border-radius: 15px; background: white; box-shadow: var(--shadow); flex-direction: column; align-items: stretch; }
  .main-nav.open { display: flex; }
  .main-nav a { padding: 8px; }
  .main-nav { z-index: 3; }
  .hero { grid-template-columns: 1fr; gap: 32px; min-height: auto; }
  .hero-panel { max-width: 560px; }
  .proof-strip { grid-template-columns: repeat(2, 1fr); gap: 22px 0; }
  .proof-strip div:nth-child(2) { border-right: 0; }
  .why-grid, .promise-panel, .diagnostic-card, .research-section, .pricing-section { grid-template-columns: 1fr; }
  .pricing-intro { max-width: 700px; }
  .method-steps { grid-template-columns: repeat(2, 1fr); }
  .source-links { grid-column: auto; }
  .day-grid, .word-grid { grid-template-columns: 1fr; }
  .lesson-header { grid-template-columns: 1fr; }
  .metrics-grid { grid-template-columns: repeat(2, 1fr); }
  .progress-map { grid-template-columns: repeat(5, 1fr); }
}

@media (max-width: 600px) {
  .section { padding: 58px 18px; }
  h1 { font-size: clamp(2.65rem, 14vw, 4rem); }
  h2 { font-size: clamp(2rem, 10vw, 3rem); }
  .brand-lockup { display: none; }
  .account-button { padding: 0 11px; }
  .auth-dialog { padding: 38px 22px 26px; border-radius: 22px; }
  .progress-account-note { grid-template-columns: auto 1fr; }
  .progress-account-note .button { grid-column: 1 / -1; width: 100%; }
  .method-steps { grid-template-columns: 1fr; }
  .hero { padding-top: 54px; }
  .hero-actions .button { width: 100%; }
  .proof-strip { padding: 22px 18px; }
  .proof-strip div { padding: 0 14px; }
  .proof-strip strong { font-size: 1.7rem; }
  .split-heading { display: block; }
  .progress-pill, .timer { margin-top: 18px; width: fit-content; }
  .promise-panel, .diagnostic-card { padding: 26px 20px; }
  .day-card { grid-template-columns: 64px 1fr; padding: 20px; gap: 14px; }
  .day-number { width: 58px; height: 58px; border-radius: 17px; }
  .day-number strong { font-size: 1.4rem; }
  .lesson-footer-actions { flex-direction: column; }
  .lesson-footer-actions .button { width: 100%; }
  .production-grid { grid-template-columns: 1fr; }
  .review-controls { display: grid; grid-template-columns: 1fr; }
  .review-controls select, .review-controls .button { width: 100%; }
  .metrics-grid { grid-template-columns: 1fr 1fr; }
  .pricing-options { grid-template-columns: 1fr; }
  .price-card { min-height: 0; }
  .price-card.featured { transform: none; }
  .metric-card { padding: 18px; }
  .metric-card strong { font-size: 1.8rem; }
  footer { flex-direction: column; }
}

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