:root {
  --navy: #0b1f33;
  --navy-2: #102b46;
  --ink: #172331;
  --muted: #627181;
  --lime: #a7e43b;
  --lime-dark: #78ae18;
  --ice: #eef5f9;
  --paper: #ffffff;
  --line: #dce6ed;
  --shadow: 0 22px 60px rgba(7, 31, 51, .12);
  --radius: 24px;
  --radius-sm: 14px;
  --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: 1.65;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button, input, textarea, select { font: inherit; }
.container { width: min(calc(100% - 40px), var(--max)); margin-inline: auto; }
.skip-link { position: fixed; top: -60px; left: 20px; z-index: 9999; padding: 12px 18px; background: var(--lime); color: var(--navy); font-weight: 800; border-radius: 8px; }
.skip-link:focus { top: 18px; }
.site-header {
  position: sticky; top: 0; z-index: 1000;
  background: rgba(255,255,255,.92); backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(220,230,237,.8);
}
.header-inner { min-height: 82px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: flex; align-items: center; gap: 12px; font-weight: 900; letter-spacing: .04em; color: var(--navy); }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; background: var(--navy); color: var(--lime); border-radius: 12px; font-size: .95rem; }
.brand-text small { display: block; margin-top: -3px; color: var(--muted); font-size: .64rem; font-weight: 700; letter-spacing: .12em; }
.nav { display: flex; align-items: center; gap: 8px; }
.nav a { padding: 10px 12px; border-radius: 10px; font-size: .92rem; font-weight: 750; color: #34475a; }
.nav a:hover, .nav a.active { background: var(--ice); color: var(--navy); }
.nav .nav-cta { background: var(--navy); color: white; padding-inline: 18px; }
.nav .nav-cta:hover, .nav .nav-cta.active { background: var(--lime); color: var(--navy); }
.menu-btn { display: none; width: 44px; height: 44px; border: 0; border-radius: 12px; background: var(--ice); color: var(--navy); cursor: pointer; }
.hero {
  position: relative; overflow: hidden; background:
    radial-gradient(circle at 82% 12%, rgba(167,228,59,.25), transparent 30%),
    linear-gradient(135deg, #f7fbfd 0%, #eef5f9 55%, #f9fbf5 100%);
}
.hero:before { content: ""; position: absolute; width: 400px; height: 400px; border: 1px solid rgba(11,31,51,.06); border-radius: 50%; left: -210px; top: 60px; box-shadow: 0 0 0 70px rgba(11,31,51,.025), 0 0 0 140px rgba(11,31,51,.02); }
.hero-grid { min-height: 730px; display: grid; grid-template-columns: 1.08fr .92fr; align-items: center; gap: 72px; padding-block: 76px; position: relative; }
.eyebrow { display: inline-flex; align-items: center; gap: 10px; font-size: .77rem; font-weight: 900; letter-spacing: .15em; text-transform: uppercase; color: var(--navy-2); }
.eyebrow:before { content: ""; width: 32px; height: 3px; background: var(--lime-dark); border-radius: 20px; }
h1, h2, h3 { color: var(--navy); line-height: 1.08; letter-spacing: -.035em; margin-top: 0; }
h1 { font-size: clamp(3rem, 6.7vw, 6.6rem); margin-bottom: 24px; }
h2 { font-size: clamp(2.2rem, 4vw, 4.2rem); margin-bottom: 20px; }
h3 { font-size: 1.35rem; margin-bottom: 12px; }
.hero h1 span { display: block; color: transparent; -webkit-text-stroke: 1.5px var(--navy); }
.lead { font-size: clamp(1.08rem, 1.5vw, 1.3rem); color: #506173; max-width: 690px; }
.hero-actions, .button-row { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 32px; }
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 12px 20px; border-radius: 12px; font-weight: 850; border: 1px solid transparent; transition: transform .2s, box-shadow .2s, background .2s; }
.btn:hover { transform: translateY(-2px); }
.btn-primary { background: var(--navy); color: white; box-shadow: 0 10px 24px rgba(11,31,51,.17); }
.btn-primary:hover { background: var(--navy-2); }
.btn-accent { background: var(--lime); color: var(--navy); }
.btn-outline { border-color: #b7c6d2; color: var(--navy); background: rgba(255,255,255,.7); }
.hero-visual { position: relative; padding: 32px 0 0 38px; }
.hero-photo { aspect-ratio: 4/4.6; width: 100%; object-fit: cover; object-position: 62% center; border-radius: 34px 34px 120px 34px; box-shadow: var(--shadow); }
.hero-visual:before { content: ""; position: absolute; left: 0; top: 0; width: 62%; height: 62%; border: 3px solid var(--lime); border-radius: 34px; z-index: 0; }
.hero-photo { position: relative; z-index: 1; }
.float-card { position: absolute; z-index: 2; left: -5px; bottom: 46px; max-width: 270px; padding: 20px; background: rgba(255,255,255,.95); border-radius: 18px; box-shadow: var(--shadow); border: 1px solid rgba(220,230,237,.8); }
.float-card strong { display: block; color: var(--navy); font-size: 1.05rem; }
.float-card span { font-size: .86rem; color: var(--muted); }
.pill-row { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 26px; }
.pill { padding: 8px 12px; border-radius: 999px; background: white; border: 1px solid var(--line); font-size: .82rem; font-weight: 750; color: #425668; }
.section { padding-block: 104px; }
.section-sm { padding-block: 74px; }
.section-dark { background: var(--navy); color: white; }
.section-dark h2, .section-dark h3 { color: white; }
.section-dark .lead, .section-dark .muted { color: #bed0df; }
.section-soft { background: var(--ice); }
.section-heading { display: grid; grid-template-columns: 1fr .8fr; align-items: end; gap: 50px; margin-bottom: 46px; }
.section-heading p { margin: 0; color: var(--muted); }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 28px; }
.card { background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 30px; box-shadow: 0 12px 30px rgba(20,49,73,.05); }
.card-icon { width: 52px; height: 52px; display: grid; place-items: center; border-radius: 15px; background: var(--lime); color: var(--navy); font-weight: 950; margin-bottom: 24px; }
.card p { color: var(--muted); margin-bottom: 0; }
.link-arrow { display: inline-flex; align-items: center; gap: 8px; margin-top: 20px; font-weight: 850; color: var(--navy); }
.link-arrow:after { content: "→"; transition: transform .2s; }
.link-arrow:hover:after { transform: translateX(4px); }
.book-feature { display: grid; grid-template-columns: .78fr 1.22fr; gap: 72px; align-items: center; }
.book-cover-wrap { position: relative; max-width: 390px; margin-inline: auto; }
.book-cover-wrap:before { content: ""; position: absolute; inset: 7% -10% -7% 14%; border-radius: 24px; background: var(--lime); transform: rotate(3deg); }
.book-cover { position: relative; z-index: 1; width: 100%; border-radius: 8px; box-shadow: 0 28px 70px rgba(1,16,29,.35); }
.checks { display: grid; gap: 14px; margin: 28px 0; padding: 0; list-style: none; }
.checks li { display: flex; gap: 12px; align-items: flex-start; }
.checks li:before { content: "✓"; flex: 0 0 24px; width: 24px; height: 24px; display: grid; place-items: center; border-radius: 50%; background: var(--lime); color: var(--navy); font-weight: 950; margin-top: 2px; }
.books-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 22px; }
.book-card { display: flex; flex-direction: column; background: white; border: 1px solid var(--line); border-radius: 20px; overflow: hidden; }
.book-card-media { padding: 28px; background: #edf4f8; min-height: 390px; display: grid; place-items: center; }
.book-card img { max-height: 335px; width: auto; box-shadow: 0 16px 36px rgba(1,16,29,.2); }
.book-card-body { padding: 24px; display: flex; flex-direction: column; flex: 1; }
.book-card-body p { color: var(--muted); font-size: .94rem; }
.book-card-body .link-arrow { margin-top: auto; }
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 72px; align-items: center; }
.photo-panel img { width: 100%; border-radius: 28px; box-shadow: var(--shadow); }
.stat-strip { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.18); margin-top: 42px; }
.stat { padding: 28px 20px 0 0; }
.stat strong { display: block; font-size: 2.1rem; color: var(--lime); line-height: 1; }
.stat span { display: block; color: #bdd0df; margin-top: 8px; font-size: .88rem; }
.quote-card { background: white; border-left: 5px solid var(--lime); padding: 28px 30px; border-radius: 0 18px 18px 0; box-shadow: var(--shadow); }
.quote-card p { font-size: 1.06rem; color: #3d5062; }
.quote-card strong { color: var(--navy); }
.article-card { border-top: 3px solid var(--lime); }
.article-meta { color: var(--lime-dark); font-size: .78rem; font-weight: 900; letter-spacing: .12em; text-transform: uppercase; }
.cta { overflow: hidden; position: relative; border-radius: 34px; background: var(--navy); color: white; padding: 64px; }
.cta:after { content: ""; position: absolute; width: 340px; height: 340px; border-radius: 50%; border: 70px solid rgba(167,228,59,.13); right: -110px; top: -120px; }
.cta h2 { color: white; max-width: 760px; position: relative; z-index: 1; }
.cta p, .cta .button-row { position: relative; z-index: 1; }
.cta p { color: #bfd1df; max-width: 720px; }
.page-hero { padding-block: 96px 72px; background: linear-gradient(145deg,#f6fafc,#edf5f9); }
.page-hero h1 { font-size: clamp(3rem, 6vw, 5.8rem); max-width: 1000px; }
.page-hero .lead { max-width: 800px; }
.timeline { position: relative; padding-left: 34px; display: grid; gap: 32px; }
.timeline:before { content: ""; position: absolute; top: 6px; bottom: 8px; left: 7px; width: 2px; background: var(--line); }
.timeline-item { position: relative; }
.timeline-item:before { content: ""; position: absolute; left: -34px; top: 5px; width: 16px; height: 16px; background: var(--lime); border: 4px solid white; box-shadow: 0 0 0 2px var(--lime-dark); border-radius: 50%; }
.timeline-item small { color: var(--lime-dark); font-weight: 900; text-transform: uppercase; letter-spacing: .1em; }
.topic { padding: 28px; border-radius: 20px; border: 1px solid var(--line); background: white; }
.topic ul { color: var(--muted); padding-left: 20px; }
.contact-grid { display: grid; grid-template-columns: .75fr 1.25fr; gap: 50px; }
.contact-list { display: grid; gap: 14px; margin-top: 28px; }
.contact-item { padding: 18px; border: 1px solid var(--line); border-radius: 14px; background: white; }
.contact-item small { display: block; color: var(--muted); }
.form { display: grid; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
label { display: grid; gap: 8px; font-weight: 800; color: var(--navy); font-size: .9rem; }
input, textarea, select { width: 100%; border: 1px solid #c9d7e1; border-radius: 12px; padding: 13px 14px; background: white; color: var(--ink); outline: none; }
input:focus, textarea:focus, select:focus { border-color: var(--lime-dark); box-shadow: 0 0 0 3px rgba(167,228,59,.22); }
textarea { min-height: 160px; resize: vertical; }
.form-status { min-height: 24px; color: var(--lime-dark); font-weight: 700; }
.site-footer { background: #071827; color: #bdcbd7; padding: 68px 0 28px; }
.footer-grid { display: grid; grid-template-columns: 1.3fr .7fr .7fr; gap: 50px; }
.footer-brand p { max-width: 440px; }
.footer-title { color: white; font-weight: 900; margin-bottom: 14px; }
.footer-links { display: grid; gap: 9px; }
.footer-links a:hover { color: var(--lime); }
.footer-bottom { display: flex; justify-content: space-between; gap: 20px; border-top: 1px solid rgba(255,255,255,.11); padding-top: 24px; margin-top: 44px; font-size: .83rem; }
.muted { color: var(--muted); }
.kicker { color: var(--lime-dark); font-weight: 850; }
.prose { max-width: 820px; }
.prose h2 { font-size: clamp(2rem,4vw,3.4rem); margin-top: 60px; }
.prose h3 { margin-top: 34px; }
.prose p, .prose li { color: #526476; }
.error-page { min-height: 70vh; display: grid; place-items: center; text-align: center; }
.error-code { font-size: clamp(7rem,20vw,15rem); line-height: .8; font-weight: 950; color: var(--ice); -webkit-text-stroke: 2px var(--navy); }
@media (max-width: 1020px) {
  .hero-grid, .book-feature, .split, .contact-grid { grid-template-columns: 1fr; }
  .hero-grid { min-height: auto; gap: 42px; }
  .hero-visual { max-width: 680px; }
  .section-heading { grid-template-columns: 1fr; gap: 12px; }
  .books-grid { grid-template-columns: repeat(2,1fr); }
  .grid-3 { grid-template-columns: 1fr 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 790px) {
  .menu-btn { display: grid; place-items: center; }
  .nav { position: fixed; left: 20px; right: 20px; top: 92px; display: none; flex-direction: column; align-items: stretch; background: white; border: 1px solid var(--line); padding: 14px; border-radius: 18px; box-shadow: var(--shadow); }
  .nav.open { display: flex; }
  .nav a { text-align: center; }
  .hero-grid { padding-block: 54px 70px; }
  h1 { font-size: clamp(3.1rem,14vw,5rem); }
  .grid-3, .grid-2, .books-grid, .form-row { grid-template-columns: 1fr; }
  .section { padding-block: 76px; }
  .cta { padding: 42px 28px; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; }
  .stat-strip { grid-template-columns: 1fr; }
  .float-card { left: 12px; bottom: 22px; }
}
@media (max-width: 520px) {
  .container { width: min(calc(100% - 28px), var(--max)); }
  .brand-text small { display: none; }
  .hero-visual { padding-left: 16px; }
  .hero-photo { border-radius: 24px 24px 76px 24px; }
  .float-card { position: relative; left: auto; bottom: auto; margin: -40px 18px 0; }
  .book-card-media { min-height: 330px; }
}
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}