:root {
  --ink: #07192d;
  --ink-soft: #183451;
  --paper: #f7faf8;
  --white: #ffffff;
  --cyan: #62e7d4;
  --cyan-dark: #087f73;
  --yellow: #ffe16b;
  --orange: #ff906b;
  --line: #cbd8dd;
  --muted: #5c7183;
  --shadow: 0 18px 55px rgba(7, 25, 45, 0.12);
  --radius: 18px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}
a { color: inherit; }
img { max-width: 100%; display: block; }
button, input { font: inherit; }
.skip-link { position: absolute; left: -9999px; top: 0; background: var(--yellow); padding: .75rem 1rem; z-index: 20; }
.skip-link:focus { left: 1rem; top: 1rem; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247,250,248,.94);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(12px);
}
.header-inner, .wrap { width: min(1180px, calc(100% - 36px)); margin: 0 auto; }
.header-inner { min-height: 74px; display: flex; align-items: center; justify-content: space-between; gap: 24px; }
.brand { display: inline-flex; align-items: center; gap: 11px; font-weight: 850; text-decoration: none; letter-spacing: -.02em; }
.brand-mark { width: 34px; height: 34px; display: grid; place-items: center; border-radius: 10px; background: var(--ink); color: var(--cyan); font-weight: 900; }
.nav { display: flex; align-items: center; gap: 22px; }
.nav a { text-decoration: none; font-weight: 700; font-size: .94rem; }
.nav a:hover { color: var(--cyan-dark); }
.menu-button { display: none; border: 0; background: var(--ink); color: white; border-radius: 10px; padding: .55rem .75rem; }
.hero { background: var(--ink); color: white; overflow: hidden; }
.hero-grid { min-height: 540px; display: grid; grid-template-columns: 1.05fr .95fr; align-items: center; gap: 70px; padding: 70px 0; }
.eyebrow { margin: 0 0 12px; color: var(--cyan-dark); font-size: .76rem; font-weight: 900; text-transform: uppercase; letter-spacing: .15em; }
.hero .eyebrow { color: var(--cyan); }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; }
h1 { max-width: 780px; margin: 0; font-size: clamp(2.65rem, 6vw, 5.4rem); }
h2 { font-size: clamp(2rem, 4vw, 3.25rem); margin: 0 0 16px; }
h3 { font-size: 1.3rem; margin: 0 0 8px; }
.hero-copy { max-width: 680px; margin: 24px 0 28px; color: #c9d7e4; font-size: clamp(1.05rem, 2vw, 1.22rem); }
.button-row { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
.button { display: inline-flex; align-items: center; justify-content: center; min-height: 48px; padding: .75rem 1.1rem; border: 2px solid var(--ink); border-radius: 12px; background: var(--ink); color: white; font-weight: 850; text-decoration: none; transition: transform .16s ease, box-shadow .16s ease; }
.button:hover { transform: translateY(-2px); box-shadow: 0 9px 22px rgba(7,25,45,.18); }
.button-accent { background: var(--cyan); border-color: var(--cyan); color: var(--ink); }
.button-ghost { background: transparent; border-color: #6f8498; color: white; }
.button-disabled { cursor: not-allowed; background: #dbe4e6; border-color: #dbe4e6; color: #60717b; box-shadow: none; }
.button-disabled:hover { transform: none; box-shadow: none; }
.hero-proof { display: flex; flex-wrap: wrap; gap: 18px; margin-top: 26px; color: #9eb2c4; font-size: .88rem; }
.hero-proof span::before { content: "✓"; margin-right: 7px; color: var(--cyan); font-weight: 900; }
.hero-visual { position: relative; min-height: 395px; }
.cover-stack { position: absolute; inset: 0; display: grid; place-items: center; }
.cover-stack img { position: absolute; width: min(58%, 285px); border: 1px solid rgba(255,255,255,.22); border-radius: 8px; box-shadow: 0 25px 65px rgba(0,0,0,.36); }
.cover-stack img:nth-child(1) { transform: translate(-34%, 7%) rotate(-7deg); }
.cover-stack img:nth-child(2) { transform: translate(31%, 10%) rotate(7deg); }
.cover-stack img:nth-child(3) { transform: translateY(-7%); z-index: 2; }
.section { padding: 82px 0; }
.section-compact { padding: 54px 0; }
.section-dark { background: var(--ink); color: white; }
.section-heading { display: flex; align-items: end; justify-content: space-between; gap: 30px; margin-bottom: 30px; }
.section-heading p { max-width: 550px; margin: 0; color: var(--muted); }
.section-dark .section-heading p { color: #aebfcc; }
.catalog-tools { margin: 28px 0; }
.search-box { width: min(100%, 540px); border: 1px solid var(--line); border-radius: 13px; padding: 14px 16px; background: white; color: var(--ink); }
.product-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 22px; }
.product-card { position: relative; overflow: hidden; display: flex; min-height: 308px; flex-direction: column; justify-content: space-between; background: white; border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: 0 8px 24px rgba(7,25,45,.06); }
.product-card::after { content: attr(data-number); position: absolute; right: 16px; top: -20px; color: #edf3f4; font-size: 7rem; font-weight: 950; line-height: 1; z-index: 0; }
.product-card > * { position: relative; z-index: 1; }
.card-kicker { color: var(--cyan-dark); font-size: .78rem; font-weight: 900; text-transform: uppercase; letter-spacing: .1em; }
.product-card p { color: var(--muted); }
.card-link { align-self: flex-start; font-weight: 850; text-underline-offset: 4px; }
.trust-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.trust-card { border-top: 3px solid var(--cyan); padding-top: 20px; }
.trust-card p { color: #bdcbd5; }
.page-hero { padding: 66px 0; background: var(--ink); color: white; }
.breadcrumbs { margin-bottom: 24px; color: #9fb4c6; font-size: .88rem; }
.breadcrumbs a { color: white; text-underline-offset: 3px; }
.guide-copy .breadcrumbs { color: var(--muted); }
.guide-copy .breadcrumbs a { color: var(--ink); }
.family-intro { display: grid; grid-template-columns: 1fr auto; gap: 42px; align-items: end; }
.family-intro p { max-width: 680px; color: #c3d1dc; font-size: 1.12rem; }
.stat { display: grid; place-items: center; width: 128px; height: 128px; border: 2px solid var(--cyan); border-radius: 50%; text-align: center; }
.stat strong { display: block; font-size: 2.5rem; line-height: 1; }
.stat b { color: var(--cyan); }
.guide-grid { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 24px; }
.guide-card { display: flex; flex-direction: column; overflow: hidden; background: white; border: 1px solid var(--line); border-radius: var(--radius); box-shadow: 0 10px 30px rgba(7,25,45,.08); }
.guide-card-cover { aspect-ratio: 4 / 3; overflow: hidden; background: #d8e8e7; }
.guide-card-cover img { width: 100%; height: 100%; object-fit: cover; object-position: top; }
.guide-card-body { display: flex; flex: 1; flex-direction: column; padding: 24px; }
.guide-card-body p { color: var(--muted); }
.guide-card-body .button { margin-top: auto; align-self: flex-start; }
.guide-layout { display: grid; grid-template-columns: minmax(260px, .75fr) minmax(0, 1.25fr); gap: 64px; align-items: start; }
.guide-cover { position: sticky; top: 105px; }
.guide-cover img { width: 100%; border-radius: 10px; box-shadow: var(--shadow); border: 1px solid var(--line); }
.guide-copy h1 { font-size: clamp(2.7rem, 5vw, 4.6rem); }
.guide-copy .lede { color: var(--muted); font-size: 1.18rem; }
.purchase-panel { margin: 30px 0; padding: 24px; border: 1px solid var(--line); border-radius: var(--radius); background: white; box-shadow: 0 8px 26px rgba(7,25,45,.06); }
.price-line { display: flex; justify-content: space-between; align-items: baseline; gap: 20px; margin-bottom: 18px; }
.price { font-size: 1.35rem; font-weight: 900; }
.checkout-note { color: var(--muted); font-size: .86rem; margin: 12px 0 0; }
.feature-list { display: grid; gap: 11px; list-style: none; padding: 0; margin: 26px 0; }
.feature-list li { position: relative; padding-left: 28px; }
.feature-list li::before { content: "→"; position: absolute; left: 0; color: var(--cyan-dark); font-weight: 900; }
.info-band { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1px; background: var(--line); border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.info-band div { background: white; padding: 22px; }
.info-band strong { display: block; margin-bottom: 4px; }
.faq { border-top: 1px solid var(--line); }
.faq details { border-bottom: 1px solid var(--line); padding: 18px 0; }
.faq summary { cursor: pointer; font-weight: 850; }
.faq p { max-width: 760px; color: var(--muted); }
.legal { max-width: 780px; }
.legal h1 { font-size: clamp(2.6rem,5vw,4.3rem); }
.legal h2 { margin-top: 2.2rem; font-size: 1.6rem; }
.notice { border-left: 4px solid var(--yellow); padding: 14px 18px; background: #fff7ce; color: var(--ink-soft); }
.empty-state { padding: 30px; text-align: center; border: 1px dashed var(--line); border-radius: var(--radius); color: var(--muted); }
.site-footer { padding: 54px 0 30px; background: #041322; color: #b9cad6; }
.footer-grid { display: grid; grid-template-columns: 1.4fr 1fr 1fr; gap: 36px; }
.site-footer h3 { color: white; }
.footer-links { display: grid; gap: 8px; }
.footer-links a { color: #b9cad6; }
.footer-bottom { margin-top: 38px; padding-top: 20px; border-top: 1px solid #294058; font-size: .86rem; }

@media (max-width: 880px) {
  .hero-grid, .guide-layout { grid-template-columns: 1fr; }
  .hero-visual { min-height: 330px; }
  .product-grid, .guide-grid, .trust-grid { grid-template-columns: repeat(2, 1fr); }
  .guide-cover { position: static; max-width: 450px; }
  .family-intro { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .header-inner, .wrap { width: min(100% - 24px, 1180px); }
  .menu-button { display: block; }
  .nav { display: none; position: absolute; left: 12px; right: 12px; top: 65px; flex-direction: column; align-items: stretch; padding: 18px; background: white; border: 1px solid var(--line); border-radius: 14px; box-shadow: var(--shadow); }
  .nav[data-open="true"] { display: flex; }
  .hero-grid { min-height: 0; padding: 52px 0; gap: 24px; }
  .hero-visual { min-height: 285px; }
  .section { padding: 58px 0; }
  .section-heading { display: block; }
  .product-grid, .guide-grid, .trust-grid, .info-band, .footer-grid { grid-template-columns: 1fr; }
  .cover-stack img { width: 52%; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}