:root {
  --ink: #16211d;
  --muted: #5c6962;
  --paper: #f5f6f2;
  --surface: #ffffff;
  --line: #d8ded6;
  --core: #207a57;
  --dark: #20312b;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.6;
}
a { color: inherit; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  border-bottom: 1px solid var(--line);
  background: rgba(245, 246, 242, 0.96);
}
.nav,
.hero-inner,
.content,
.footer-inner {
  width: min(1080px, calc(100% - 32px));
  margin: 0 auto;
}
.nav {
  min-height: 70px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}
.brand-logo { display: block; width: 148px; }
.nav-links { display: flex; gap: 18px; align-items: center; }
.nav-links a { color: var(--muted); font-weight: 750; text-decoration: none; }
.button {
  display: inline-flex;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
  padding: 0 18px;
  background: var(--core);
  color: #fff;
  font-weight: 850;
  text-decoration: none;
}
.hero {
  border-bottom: 1px solid var(--line);
  background: linear-gradient(135deg, #edf3ed 0%, #f8f9f5 55%, #e6efe9 100%);
}
.hero-inner { padding: 78px 0 68px; }
.eyebrow {
  color: var(--core);
  font-size: 0.8rem;
  font-weight: 900;
  text-transform: uppercase;
}
h1 {
  max-width: 850px;
  margin: 12px 0 20px;
  font-size: clamp(2.5rem, 6vw, 4.7rem);
  line-height: 1;
  letter-spacing: -0.04em;
}
.hero p { max-width: 760px; margin: 0; color: var(--muted); font-size: 1.18rem; }
.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 28px; }
.button-secondary { border: 1px solid var(--line); background: #fff; color: var(--ink); }
.content { padding: 64px 0 80px; }
.content-grid { display: grid; grid-template-columns: minmax(0, 1fr) 300px; gap: 54px; align-items: start; }
.article { min-width: 0; }
.article section { margin-bottom: 48px; }
h2 { margin: 0 0 14px; font-size: 2rem; line-height: 1.15; }
h3 { margin: 0 0 8px; font-size: 1.12rem; }
p { margin: 0 0 16px; }
.article p,
.article li { color: var(--muted); }
.checklist { display: grid; gap: 12px; padding: 0; list-style: none; }
.checklist li { position: relative; padding-left: 26px; }
.checklist li::before {
  position: absolute;
  left: 0;
  top: 0.45em;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--core);
  content: "";
}
.card-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.card,
.aside-card {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  padding: 20px;
}
.card p { margin: 0; }
.aside { position: sticky; top: 94px; display: grid; gap: 16px; }
.aside-card strong { display: block; margin-bottom: 8px; font-size: 1.08rem; }
.aside-card p { color: var(--muted); }
.aside-card .button { width: 100%; }
.product-shot { margin: 24px 0 0; }
.product-shot img { display: block; width: 100%; border: 1px solid var(--line); border-radius: 8px; box-shadow: 0 20px 55px rgba(22, 33, 29, 0.12); }
.product-shot figcaption { margin-top: 10px; color: var(--muted); font-size: 0.85rem; }
.related { display: grid; gap: 10px; }
.related a { color: var(--core); font-weight: 800; text-decoration-thickness: 1px; text-underline-offset: 3px; }
.site-footer { border-top: 1px solid var(--line); background: #fff; }
.footer-inner { min-height: 84px; display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap; color: var(--muted); }
.footer-links { display: flex; gap: 16px; flex-wrap: wrap; }

@media (max-width: 820px) {
  .nav-links { display: none; }
  .hero-inner { padding: 58px 0 52px; }
  .content-grid { grid-template-columns: 1fr; }
  .aside { position: static; }
}

@media (max-width: 560px) {
  .card-grid { grid-template-columns: 1fr; }
  .nav .button { padding: 0 12px; }
}