:root {
  --blue: #0645c0;
  --blue-deep: #062a72;
  --blue-soft: #eaf1ff;
  --yellow: #ffde00;
  --ink: #101828;
  --muted: #586478;
  --line: #dfe5ef;
  --paper: #ffffff;
  --wash: #f6f8fc;
  --green: #91cf3c;
  --radius: 22px;
  --shadow: 0 18px 50px rgba(18, 42, 86, .09);
  --max: 1160px;
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 92px; }
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: 1.65; text-rendering: optimizeLegibility; }
img { max-width: 100%; display: block; }
a { color: var(--blue); text-underline-offset: .22em; }
a:hover { text-decoration-thickness: 2px; }
button, input, textarea { font: inherit; }
button, a { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid #ffb900; outline-offset: 3px; }
.skip-link { position: absolute; top: -50px; left: 16px; z-index: 1000; padding: 10px 14px; border-radius: 10px; background: var(--yellow); color: var(--ink); font-weight: 800; }
.skip-link:focus { top: 10px; }
.container { width: min(var(--max), calc(100% - 44px)); margin-inline: auto; }
.site-header { position: sticky; top: 0; z-index: 100; background: rgba(255,255,255,.94); backdrop-filter: blur(16px); border-bottom: 1px solid rgba(223,229,239,.86); }
.nav-wrap { display: flex; align-items: center; justify-content: space-between; min-height: 78px; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; color: var(--ink); flex-shrink: 0; }
.brand img { width: 45px; height: 45px; object-fit: contain; }
.brand-name { font-size: 1.17rem; font-weight: 900; letter-spacing: -.045em; }
.brand-name span { color: var(--blue); }
.nav-links { display: flex; align-items: center; gap: clamp(12px, 2vw, 25px); }
.nav-links a { text-decoration: none; color: #354155; font-size: .91rem; font-weight: 700; white-space: nowrap; }
.nav-links a:hover, .nav-links a[aria-current="page"] { color: var(--blue); }
.nav-links .nav-cta { background: var(--blue); color: white; padding: 10px 16px; border-radius: 999px; }
.nav-links .nav-cta:hover { color: var(--ink); background: var(--yellow); }
.menu-toggle { display: none; border: 1px solid var(--line); background: white; color: var(--ink); border-radius: 12px; padding: 9px 12px; cursor: pointer; font-weight: 800; }
.hero { position: relative; overflow: hidden; background: var(--blue); color: white; isolation: isolate; }
.hero::before { content: ""; position: absolute; width: 540px; height: 540px; border-radius: 50%; right: -145px; top: -260px; background: var(--yellow); opacity: .98; z-index: -1; }
.hero::after { content: ""; position: absolute; width: 360px; height: 360px; border: 1px solid rgba(255,255,255,.2); border-radius: 50%; right: 7%; bottom: -270px; z-index: -1; }
.hero-grid { display: grid; grid-template-columns: minmax(0,1.15fr) minmax(300px,.85fr); gap: 48px; align-items: center; padding-block: clamp(76px, 10vw, 130px); }
.eyebrow { display: inline-flex; align-items: center; gap: 9px; margin: 0 0 18px; color: var(--yellow); text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; font-weight: 900; }
.eyebrow::before { content: ""; width: 28px; height: 3px; border-radius: 9px; background: currentColor; }
.hero h1 { max-width: 760px; margin: 0; font-size: clamp(2.7rem, 5.8vw, 5.45rem); line-height: .99; letter-spacing: -.065em; font-weight: 950; }
.hero h1 em { color: var(--yellow); font-style: normal; }
.hero-copy { max-width: 635px; color: #e1eaff; margin: 24px 0 28px; font-size: clamp(1rem,1.45vw,1.15rem); }
.actions { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn { display: inline-flex; justify-content: center; align-items: center; gap: 10px; min-height: 48px; padding: 12px 20px; border-radius: 999px; border: 1px solid transparent; background: var(--yellow); color: #17213a; font-weight: 850; text-decoration: none; box-shadow: none; transition: transform .18s ease, box-shadow .18s ease, background .18s ease; }
.btn:hover { transform: translateY(-2px); box-shadow: 0 9px 20px rgba(0,0,0,.14); text-decoration: none; }
.btn-light { background: white; color: var(--blue); }
.btn-outline { background: transparent; border-color: #d4def4; color: var(--blue); }
.btn-outline:hover { background: var(--blue-soft); }
.btn-dark-outline { color: white; border-color: rgba(255,255,255,.45); background: transparent; }
.hero-card { background: rgba(255,255,255,.98); color: var(--ink); border-radius: 28px; padding: 28px; box-shadow: 0 28px 70px rgba(0,0,0,.2); transform: rotate(1.4deg); position: relative; }
.hero-card::after { content: ""; position: absolute; inset: 12px -11px -11px 12px; border-radius: 28px; border: 2px solid var(--yellow); z-index: -1; }
.hero-card-top { display: flex; justify-content: space-between; align-items: center; gap: 16px; margin-bottom: 24px; }
.hero-card-top small { text-transform: uppercase; letter-spacing: .11em; font-weight: 900; color: var(--muted); }
.pill { display: inline-flex; align-items: center; border-radius: 999px; padding: 6px 10px; background: var(--blue-soft); color: var(--blue); font-size: .73rem; font-weight: 900; }
.expression { padding: 21px 0 18px; border-top: 1px solid var(--line); }
.expression .label { display: block; color: var(--muted); font-size: .8rem; font-weight: 800; margin-bottom: 7px; }
.expression strong { display: block; font-size: clamp(1.25rem, 2.3vw, 1.85rem); letter-spacing: -.04em; line-height: 1.2; }
.expression small { display: block; margin-top: 8px; color: var(--muted); }
.hero-card-footer { background: var(--yellow); border-radius: 12px; padding: 12px 14px; font-weight: 850; font-size: .86rem; margin-top: 9px; }
.section { padding-block: clamp(62px, 8vw, 98px); }
.section-wash { background: var(--wash); }
.section-blue { background: var(--blue-deep); color: white; }
.section-heading { display: flex; justify-content: space-between; align-items: end; gap: 28px; margin-bottom: 32px; }
.section-heading > div { max-width: 720px; }
.kicker { color: var(--blue); text-transform: uppercase; letter-spacing: .12em; font-size: .74rem; font-weight: 950; margin: 0 0 10px; }
.section-blue .kicker { color: var(--yellow); }
h2, h3, h4 { line-height: 1.14; letter-spacing: -.045em; }
h2 { margin: 0; font-size: clamp(2rem, 4vw, 3.25rem); font-weight: 930; }
h3 { margin: 0 0 10px; font-size: 1.32rem; font-weight: 900; }
.lead { color: var(--muted); font-size: 1.05rem; margin: 14px 0 0; max-width: 740px; }
.section-blue .lead, .section-blue .muted-light { color: #d9e4ff; }
.grid-2 { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 22px; }
.grid-3 { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 22px; }
.grid-4 { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 18px; }
.card { background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: 0 4px 18px rgba(18,42,86,.025); height: 100%; }
.card-link { text-decoration: none; color: inherit; display: block; transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease; }
.card-link:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: #a9c0f9; text-decoration: none; }
.card p { color: var(--muted); margin: 0 0 16px; }
.card .text-link { font-weight: 900; color: var(--blue); text-decoration: none; }
.card .text-link::after { content: " ↗"; }
.card-icon { width: 47px; height: 47px; display: grid; place-items: center; border-radius: 15px; background: var(--blue-soft); color: var(--blue); font-weight: 950; font-size: 1.15rem; margin-bottom: 20px; }
.yellow-icon { background: var(--yellow); color: var(--ink); }
.blue-banner { padding: 28px; background: var(--blue); color: white; border-radius: var(--radius); display: flex; align-items: center; justify-content: space-between; gap: 25px; }
.blue-banner p { color: #dce7ff; margin: 9px 0 0; }
.blue-banner h3 { font-size: clamp(1.35rem,2.4vw,2rem); margin: 0; }
.playlist-card { display: flex; flex-direction: column; min-height: 255px; }
.playlist-meta { display: flex; align-items: center; gap: 8px; color: var(--blue); font-size: .75rem; text-transform: uppercase; letter-spacing: .08em; font-weight: 900; margin-bottom: 13px; }
.playlist-card p { font-size: .93rem; }
.playlist-card .text-link { margin-top: auto; padding-top: 4px; }
.social-row { display: flex; flex-wrap: wrap; gap: 10px; }
.social-link { display: inline-flex; align-items: center; gap: 9px; padding: 11px 15px; border: 1px solid var(--line); border-radius: 999px; color: var(--ink); font-weight: 850; text-decoration: none; background: white; }
.social-link:hover { border-color: var(--blue); background: var(--blue-soft); text-decoration: none; }
.page-hero { background: linear-gradient(116deg, #0645c0 0%, #082e80 100%); color: white; padding-block: clamp(60px, 8vw, 92px); }
.page-hero .container { position: relative; }
.page-hero h1 { max-width: 920px; font-size: clamp(2.5rem, 5vw, 4.6rem); line-height: 1.01; letter-spacing: -.06em; margin: 0; }
.page-hero p:not(.eyebrow) { color: #d9e5ff; font-size: 1.1rem; max-width: 770px; margin: 20px 0 0; }
.breadcrumb { margin: 0 0 16px; color: #d0ddff; font-size: .83rem; }
.breadcrumb a { color: white; }
.content { max-width: 850px; }
.content > * + * { margin-top: 20px; }
.content h2 { font-size: clamp(1.8rem, 3vw, 2.35rem); margin-top: 44px; }
.content h3 { margin-top: 30px; }
.content p, .content li { color: #445064; }
.content ul, .content ol { padding-left: 24px; }
.content li + li { margin-top: 7px; }
.note { padding: 18px 20px; border-left: 4px solid var(--yellow); border-radius: 0 14px 14px 0; background: #fffbe1; }
.note p { margin: 0; color: #3a3a2f; }
.stat-row { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 28px 0; }
.stat { padding: 18px; border-radius: 17px; background: var(--wash); border: 1px solid var(--line); }
.stat strong { display: block; color: var(--blue); font-size: 1.35rem; letter-spacing: -.04em; }
.stat span { display: block; color: var(--muted); font-size: .84rem; }
.book-layout { display: grid; grid-template-columns: minmax(260px,.8fr) minmax(0,1.2fr); gap: clamp(28px,5vw,64px); align-items: start; }
.book-frame { border-radius: 25px; background: #0b0d13; padding: 14px; box-shadow: var(--shadow); position: sticky; top: 105px; }
.book-frame img { width: 100%; border-radius: 13px; }
.book-caption { color: #d0d6e4; font-size: .8rem; padding: 10px 4px 1px; text-align: center; }
.book-front-preview { display: flex; align-items: center; gap: 12px; background: #fff; color: var(--ink); border-radius: 13px; padding: 11px; margin-top: 12px; }
.book-front-preview img { width: 66px; height: auto; border-radius: 4px; flex: 0 0 auto; }
.book-front-preview span { font-size: .82rem; line-height: 1.35; font-weight: 850; }
.chapter-list { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 10px; padding: 0 !important; list-style: none; }
.chapter-list li { margin: 0 !important; padding: 12px 14px; background: var(--wash); border: 1px solid var(--line); border-radius: 12px; font-size: .92rem; }
.chapter-list li span { display: block; font-size: .73rem; font-weight: 900; color: var(--blue); text-transform: uppercase; letter-spacing: .06em; }
.purchase-options { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 12px; margin-top: 18px; }
.purchase-placeholder { border: 1px dashed #b7c2d6; border-radius: 16px; padding: 18px; background: var(--wash); color: var(--muted); }
.purchase-placeholder strong { display: block; color: var(--ink); font-size: 1.05rem; }
.script-box { background: #101828; color: #fff; border-radius: 18px; padding: 23px; white-space: pre-line; font-size: 1.02rem; line-height: 2.05; }
.quiz-box { border: 1px solid #c8d7fb; border-radius: 24px; padding: clamp(22px,4vw,34px); background: linear-gradient(130deg,#f2f6ff,#fff); }
.quiz-question { font-size: clamp(1.25rem,2.4vw,1.75rem); font-weight: 900; letter-spacing: -.035em; margin: 6px 0 23px; }
.quiz-options { display: grid; gap: 10px; }
.quiz-option { text-align: left; padding: 14px 16px; border: 1px solid #cbd5e5; background: white; border-radius: 13px; cursor: pointer; font-weight: 700; color: var(--ink); }
.quiz-option:hover:not(:disabled) { border-color: var(--blue); background: #f3f7ff; }
.quiz-option.correct { border-color: #2d8b51; background: #e9f8ef; }
.quiz-option.incorrect { border-color: #cb3b3b; background: #fff0f0; }
.quiz-feedback { min-height: 28px; margin: 14px 0 0; font-weight: 800; }
.quiz-feedback.good { color: #176d39; }
.quiz-feedback.bad { color: #9e2424; }
.feature-list { list-style: none; padding: 0; margin: 24px 0; display: grid; gap: 13px; }
.feature-list li { display: flex; gap: 12px; align-items: start; color: #445064; }
.feature-list li::before { content: "✓"; flex: 0 0 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: #e8f6db; color: #245b10; font-weight: 950; font-size: .82rem; }
.two-col-copy { display: grid; grid-template-columns: minmax(0,1fr) minmax(0,1fr); gap: 28px; align-items: start; }
.callout { padding: 25px; border-radius: 20px; border: 1px solid var(--line); background: var(--wash); }
.callout p { color: var(--muted); }
.empty-state { padding: 18px; border-radius: 14px; background: var(--wash); color: var(--muted); border: 1px solid var(--line); }
.site-footer { background: #09152b; color: white; padding: 54px 0 24px; }
.footer-grid { display: grid; grid-template-columns: 1.35fr 1fr 1fr; gap: 35px; padding-bottom: 34px; }
.footer-brand .brand { color: white; }
.footer-brand p { max-width: 340px; color: #c7d2e5; font-size: .92rem; }
.footer-heading { text-transform: uppercase; color: var(--yellow); font-size: .75rem; font-weight: 950; letter-spacing: .1em; margin: 0 0 15px; }
.footer-links { display: grid; gap: 10px; }
.footer-links a { color: #e2e9f6; text-decoration: none; font-size: .91rem; }
.footer-links a:hover { color: var(--yellow); }
.footer-bottom { display: flex; justify-content: space-between; gap: 16px; padding-top: 20px; border-top: 1px solid rgba(255,255,255,.16); color: #aebbd0; font-size: .82rem; }
.footer-bottom p { margin: 0; }
.copy-email { border: 0; padding: 0; background: transparent; color: inherit; text-decoration: underline; text-underline-offset: 4px; cursor: pointer; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translate(-50%, 20px); opacity: 0; pointer-events: none; z-index: 999; border-radius: 999px; padding: 11px 18px; background: #101828; color: white; box-shadow: var(--shadow); transition: opacity .2s ease, transform .2s ease; }
.toast.show { opacity: 1; transform: translate(-50%, 0); }
.back-top { display: inline-flex; align-items: center; justify-content: center; position: fixed; right: 18px; bottom: 18px; width: 44px; height: 44px; background: var(--yellow); color: var(--ink); border-radius: 50%; font-weight: 950; text-decoration: none; box-shadow: var(--shadow); opacity: 0; pointer-events: none; transition: opacity .2s ease; }
.back-top.visible { opacity: 1; pointer-events: auto; }
@media (max-width: 980px) {
  .nav-links { gap: 12px; }
  .nav-links a { font-size: .84rem; }
  .hero-grid { gap: 32px; }
  .grid-4 { grid-template-columns: repeat(2,minmax(0,1fr)); }
  .grid-3 { grid-template-columns: repeat(2,minmax(0,1fr)); }
}
@media (max-width: 760px) {
  .container { width: min(var(--max), calc(100% - 32px)); }
  .nav-wrap { min-height: 70px; }
  .menu-toggle { display: inline-flex; align-items: center; gap: 7px; }
  .nav-links { display: none; position: absolute; top: calc(100% + 1px); left: 0; right: 0; background: white; padding: 15px 20px 20px; border-bottom: 1px solid var(--line); box-shadow: 0 20px 28px rgba(10,30,70,.10); flex-direction: column; align-items: stretch; gap: 2px; }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 10px; border-radius: 10px; font-size: .97rem; }
  .nav-links .nav-cta { text-align: center; margin-top: 7px; }
  .hero::before { width: 300px; height: 300px; top: -215px; right: -160px; }
  .hero-grid { grid-template-columns: 1fr; padding-block: 67px 78px; }
  .hero-card { max-width: 490px; width: calc(100% - 12px); margin: 5px auto 0 0; transform: none; }
  .hero h1 { font-size: clamp(2.8rem, 11vw, 4rem); }
  .section-heading { align-items: start; flex-direction: column; }
  .grid-2, .grid-3, .grid-4, .two-col-copy { grid-template-columns: 1fr; }
  .blue-banner { align-items: start; flex-direction: column; }
  .book-layout { grid-template-columns: 1fr; }
  .book-frame { position: static; max-width: 440px; margin-inline: auto; }
  .chapter-list { grid-template-columns: 1fr; }
  .stat-row { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .footer-brand { grid-column: 1 / -1; }
  .footer-bottom { flex-direction: column; }
}
@media (max-width: 420px) {
  .container { width: calc(100% - 28px); }
  .brand img { width: 39px; height: 39px; }
  .brand-name { font-size: 1.05rem; }
  .hero-card { padding: 21px; }
  .actions .btn { width: 100%; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-brand { grid-column: auto; }
  .purchase-options { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; transition-duration: .01ms !important; animation-duration: .01ms !important; animation-iteration-count: 1 !important; }
}